6 |
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7 |
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package jsr166e; |
8 |
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import jsr166e.LongAdder; |
9 |
+ |
import jsr166e.ForkJoinPool; |
10 |
+ |
import jsr166e.ForkJoinTask; |
11 |
+ |
|
12 |
+ |
import java.util.Comparator; |
13 |
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import java.util.Arrays; |
14 |
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import java.util.Map; |
15 |
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import java.util.Set; |
27 |
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import java.util.concurrent.ThreadLocalRandom; |
28 |
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import java.util.concurrent.locks.LockSupport; |
29 |
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import java.util.concurrent.locks.AbstractQueuedSynchronizer; |
30 |
+ |
import java.util.concurrent.atomic.AtomicReference; |
31 |
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|
32 |
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import java.io.Serializable; |
33 |
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|
34 |
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/** |
47 |
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* block, so may overlap with update operations (including {@code put} |
48 |
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* and {@code remove}). Retrievals reflect the results of the most |
49 |
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* recently <em>completed</em> update operations holding upon their |
50 |
< |
* onset. For aggregate operations such as {@code putAll} and {@code |
51 |
< |
* clear}, concurrent retrievals may reflect insertion or removal of |
52 |
< |
* only some entries. Similarly, Iterators and Enumerations return |
53 |
< |
* elements reflecting the state of the hash table at some point at or |
54 |
< |
* since the creation of the iterator/enumeration. They do |
55 |
< |
* <em>not</em> throw {@link ConcurrentModificationException}. |
56 |
< |
* However, iterators are designed to be used by only one thread at a |
57 |
< |
* time. Bear in mind that the results of aggregate status methods |
58 |
< |
* including {@code size}, {@code isEmpty}, and {@code containsValue} |
59 |
< |
* are typically useful only when a map is not undergoing concurrent |
60 |
< |
* updates in other threads. Otherwise the results of these methods |
61 |
< |
* reflect transient states that may be adequate for monitoring |
62 |
< |
* or estimation purposes, but not for program control. |
50 |
> |
* onset. (More formally, an update operation for a given key bears a |
51 |
> |
* <em>happens-before</em> relation with any (non-null) retrieval for |
52 |
> |
* that key reporting the updated value.) For aggregate operations |
53 |
> |
* such as {@code putAll} and {@code clear}, concurrent retrievals may |
54 |
> |
* reflect insertion or removal of only some entries. Similarly, |
55 |
> |
* Iterators and Enumerations return elements reflecting the state of |
56 |
> |
* the hash table at some point at or since the creation of the |
57 |
> |
* iterator/enumeration. They do <em>not</em> throw {@link |
58 |
> |
* ConcurrentModificationException}. However, iterators are designed |
59 |
> |
* to be used by only one thread at a time. Bear in mind that the |
60 |
> |
* results of aggregate status methods including {@code size}, {@code |
61 |
> |
* isEmpty}, and {@code containsValue} are typically useful only when |
62 |
> |
* a map is not undergoing concurrent updates in other threads. |
63 |
> |
* Otherwise the results of these methods reflect transient states |
64 |
> |
* that may be adequate for monitoring or estimation purposes, but not |
65 |
> |
* for program control. |
66 |
|
* |
67 |
|
* <p> The table is dynamically expanded when there are too many |
68 |
|
* collisions (i.e., keys that have distinct hash codes but fall into |
97 |
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* Java Collections Framework</a>. |
98 |
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* |
99 |
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* <p><em>jsr166e note: This class is a candidate replacement for |
100 |
< |
* java.util.concurrent.ConcurrentHashMap.<em> |
100 |
> |
* java.util.concurrent.ConcurrentHashMap. During transition, this |
101 |
> |
* class declares and uses nested functional interfaces with different |
102 |
> |
* names but the same forms as those expected for JDK8.<em> |
103 |
|
* |
104 |
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* @since 1.5 |
105 |
|
* @author Doug Lea |
107 |
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* @param <V> the type of mapped values |
108 |
|
*/ |
109 |
|
public class ConcurrentHashMapV8<K, V> |
110 |
< |
implements ConcurrentMap<K, V>, Serializable { |
110 |
> |
implements ConcurrentMap<K, V>, Serializable { |
111 |
|
private static final long serialVersionUID = 7249069246763182397L; |
112 |
|
|
113 |
|
/** |
103 |
– |
* A function computing a mapping from the given key to a value. |
104 |
– |
* This is a place-holder for an upcoming JDK8 interface. |
105 |
– |
*/ |
106 |
– |
public static interface MappingFunction<K, V> { |
107 |
– |
/** |
108 |
– |
* Returns a value for the given key, or null if there is no mapping. |
109 |
– |
* |
110 |
– |
* @param key the (non-null) key |
111 |
– |
* @return a value for the key, or null if none |
112 |
– |
*/ |
113 |
– |
V map(K key); |
114 |
– |
} |
115 |
– |
|
116 |
– |
/** |
117 |
– |
* A function computing a new mapping given a key and its current |
118 |
– |
* mapped value (or {@code null} if there is no current |
119 |
– |
* mapping). This is a place-holder for an upcoming JDK8 |
120 |
– |
* interface. |
121 |
– |
*/ |
122 |
– |
public static interface RemappingFunction<K, V> { |
123 |
– |
/** |
124 |
– |
* Returns a new value given a key and its current value. |
125 |
– |
* |
126 |
– |
* @param key the (non-null) key |
127 |
– |
* @param value the current value, or null if there is no mapping |
128 |
– |
* @return a value for the key, or null if none |
129 |
– |
*/ |
130 |
– |
V remap(K key, V value); |
131 |
– |
} |
132 |
– |
|
133 |
– |
/** |
114 |
|
* A partitionable iterator. A Spliterator can be traversed |
115 |
|
* directly, but can also be partitioned (before traversal) by |
116 |
|
* creating another Spliterator that covers a non-overlapping |
130 |
|
* |
131 |
|
* <pre> |
132 |
|
* {@code ConcurrentHashMapV8<String, Long> m = ... |
133 |
< |
* // Uses parallel depth of log2 of size / (parallelism * slack of 8). |
134 |
< |
* int depth = 32 - Integer.numberOfLeadingZeros(m.size() / (aForkJoinPool.getParallelism() * 8)); |
135 |
< |
* long sum = aForkJoinPool.invoke(new SumValues(m.valueSpliterator(), depth, null)); |
133 |
> |
* // split as if have 8 * parallelism, for load balance |
134 |
> |
* int n = m.size(); |
135 |
> |
* int p = aForkJoinPool.getParallelism() * 8; |
136 |
> |
* int split = (n < p)? n : p; |
137 |
> |
* long sum = aForkJoinPool.invoke(new SumValues(m.valueSpliterator(), split, null)); |
138 |
|
* // ... |
139 |
|
* static class SumValues extends RecursiveTask<Long> { |
140 |
|
* final Spliterator<Long> s; |
141 |
< |
* final int depth; // number of splits before processing |
141 |
> |
* final int split; // split while > 1 |
142 |
|
* final SumValues nextJoin; // records forked subtasks to join |
143 |
|
* SumValues(Spliterator<Long> s, int depth, SumValues nextJoin) { |
144 |
|
* this.s = s; this.depth = depth; this.nextJoin = nextJoin; |
146 |
|
* public Long compute() { |
147 |
|
* long sum = 0; |
148 |
|
* SumValues subtasks = null; // fork subtasks |
149 |
< |
* for (int d = depth - 1; d >= 0; --d) |
150 |
< |
* (subtasks = new SumValues(s.split(), d, subtasks)).fork(); |
149 |
> |
* for (int s = split >>> 1; s > 0; s >>>= 1) |
150 |
> |
* (subtasks = new SumValues(s.split(), s, subtasks)).fork(); |
151 |
|
* while (s.hasNext()) // directly process remaining elements |
152 |
|
* sum += s.next(); |
153 |
|
* for (SumValues t = subtasks; t != null; t = t.nextJoin) |
330 |
|
* When there are no lock acquisition failures, this is arranged |
331 |
|
* simply by proceeding from the last bin (table.length - 1) up |
332 |
|
* towards the first. Upon seeing a forwarding node, traversals |
333 |
< |
* (see class InternalIterator) arrange to move to the new table |
333 |
> |
* (see class Iter) arrange to move to the new table |
334 |
|
* without revisiting nodes. However, when any node is skipped |
335 |
|
* during a transfer, all earlier table bins may have become |
336 |
|
* visible, so are initialized with a reverse-forwarding node back |
340 |
|
* mechanics trigger only when necessary. |
341 |
|
* |
342 |
|
* The traversal scheme also applies to partial traversals of |
343 |
< |
* ranges of bins (via an alternate InternalIterator constructor) |
343 |
> |
* ranges of bins (via an alternate Traverser constructor) |
344 |
|
* to support partitioned aggregate operations. Also, read-only |
345 |
|
* operations give up if ever forwarded to a null table, which |
346 |
|
* provides support for shutdown-style clearing, which is also not |
482 |
|
* inline assignments below. |
483 |
|
*/ |
484 |
|
|
485 |
< |
static final Node tabAt(Node[] tab, int i) { // used by InternalIterator |
485 |
> |
static final Node tabAt(Node[] tab, int i) { // used by Iter |
486 |
|
return (Node)UNSAFE.getObjectVolatile(tab, ((long)i<<ASHIFT)+ABASE); |
487 |
|
} |
488 |
|
|
540 |
|
* unlocking lock (via a failed CAS from non-waiting LOCKED |
541 |
|
* state), unlockers acquire the sync lock and perform a |
542 |
|
* notifyAll. |
543 |
+ |
* |
544 |
+ |
* The initial sanity check on tab and bounds is not currently |
545 |
+ |
* necessary in the only usages of this method, but enables |
546 |
+ |
* use in other future contexts. |
547 |
|
*/ |
548 |
|
final void tryAwaitLock(Node[] tab, int i) { |
549 |
< |
if (tab != null && i >= 0 && i < tab.length) { // bounds check |
549 |
> |
if (tab != null && i >= 0 && i < tab.length) { // sanity check |
550 |
|
int r = ThreadLocalRandom.current().nextInt(); // randomize spins |
551 |
|
int spins = MAX_SPINS, h; |
552 |
|
while (tabAt(tab, i) == this && ((h = hash) & LOCKED) != 0) { |
634 |
|
* TreeBins also maintain a separate locking discipline than |
635 |
|
* regular bins. Because they are forwarded via special MOVED |
636 |
|
* nodes at bin heads (which can never change once established), |
637 |
< |
* we cannot use use those nodes as locks. Instead, TreeBin |
637 |
> |
* we cannot use those nodes as locks. Instead, TreeBin |
638 |
|
* extends AbstractQueuedSynchronizer to support a simple form of |
639 |
|
* read-write lock. For update operations and table validation, |
640 |
|
* the exclusive form of lock behaves in the same way as bin-head |
719 |
|
} |
720 |
|
|
721 |
|
/** |
722 |
< |
* Return the TreeNode (or null if not found) for the given key |
722 |
> |
* Returns the TreeNode (or null if not found) for the given key |
723 |
|
* starting at given root. |
724 |
|
*/ |
725 |
< |
@SuppressWarnings("unchecked") // suppress Comparable cast warning |
726 |
< |
final TreeNode getTreeNode(int h, Object k, TreeNode p) { |
725 |
> |
@SuppressWarnings("unchecked") final TreeNode getTreeNode |
726 |
> |
(int h, Object k, TreeNode p) { |
727 |
|
Class<?> c = k.getClass(); |
728 |
|
while (p != null) { |
729 |
|
int dir, ph; Object pk; Class<?> pc; |
783 |
|
* Finds or adds a node. |
784 |
|
* @return null if added |
785 |
|
*/ |
786 |
< |
@SuppressWarnings("unchecked") // suppress Comparable cast warning |
787 |
< |
final TreeNode putTreeNode(int h, Object k, Object v) { |
786 |
> |
@SuppressWarnings("unchecked") final TreeNode putTreeNode |
787 |
> |
(int h, Object k, Object v) { |
788 |
|
Class<?> c = k.getClass(); |
789 |
|
TreeNode pp = root, p = null; |
790 |
|
int dir = 0; |
1211 |
|
} |
1212 |
|
|
1213 |
|
/* |
1214 |
< |
* Internal versions of the five insertion methods, each a |
1214 |
> |
* Internal versions of the six insertion methods, each a |
1215 |
|
* little more complicated than the last. All have |
1216 |
|
* the same basic structure as the first (internalPut): |
1217 |
|
* 1. If table uninitialized, create |
1229 |
|
* returns from function call. |
1230 |
|
* * compute uses the same function-call mechanics, but without |
1231 |
|
* the prescans |
1232 |
+ |
* * merge acts as putIfAbsent in the absent case, but invokes the |
1233 |
+ |
* update function if present |
1234 |
|
* * putAll attempts to pre-allocate enough table space |
1235 |
|
* and more lazily performs count updates and checks. |
1236 |
|
* |
1427 |
|
|
1428 |
|
/** Implementation for computeIfAbsent */ |
1429 |
|
private final Object internalComputeIfAbsent(K k, |
1430 |
< |
MappingFunction<? super K, ?> mf) { |
1430 |
> |
Fun<? super K, ?> mf) { |
1431 |
|
int h = spread(k.hashCode()); |
1432 |
|
Object val = null; |
1433 |
|
int count = 0; |
1440 |
|
if (casTabAt(tab, i, null, node)) { |
1441 |
|
count = 1; |
1442 |
|
try { |
1443 |
< |
if ((val = mf.map(k)) != null) |
1443 |
> |
if ((val = mf.apply(k)) != null) |
1444 |
|
node.val = val; |
1445 |
|
} finally { |
1446 |
|
if (val == null) |
1465 |
|
TreeNode p = t.getTreeNode(h, k, t.root); |
1466 |
|
if (p != null) |
1467 |
|
val = p.val; |
1468 |
< |
else if ((val = mf.map(k)) != null) { |
1468 |
> |
else if ((val = mf.apply(k)) != null) { |
1469 |
|
added = true; |
1470 |
|
count = 2; |
1471 |
|
t.putTreeNode(h, k, val); |
1519 |
|
} |
1520 |
|
Node last = e; |
1521 |
|
if ((e = e.next) == null) { |
1522 |
< |
if ((val = mf.map(k)) != null) { |
1522 |
> |
if ((val = mf.apply(k)) != null) { |
1523 |
|
added = true; |
1524 |
|
last.next = new Node(h, k, val, null); |
1525 |
|
if (count >= TREE_THRESHOLD) |
1554 |
|
} |
1555 |
|
|
1556 |
|
/** Implementation for compute */ |
1557 |
< |
@SuppressWarnings("unchecked") |
1558 |
< |
private final Object internalCompute(K k, |
1571 |
< |
RemappingFunction<? super K, V> mf) { |
1557 |
> |
@SuppressWarnings("unchecked") private final Object internalCompute |
1558 |
> |
(K k, boolean onlyIfPresent, BiFun<? super K, ? super V, ? extends V> mf) { |
1559 |
|
int h = spread(k.hashCode()); |
1560 |
|
Object val = null; |
1561 |
|
int delta = 0; |
1565 |
|
if (tab == null) |
1566 |
|
tab = initTable(); |
1567 |
|
else if ((f = tabAt(tab, i = (tab.length - 1) & h)) == null) { |
1568 |
+ |
if (onlyIfPresent) |
1569 |
+ |
break; |
1570 |
|
Node node = new Node(fh = h | LOCKED, k, null, null); |
1571 |
|
if (casTabAt(tab, i, null, node)) { |
1572 |
|
try { |
1573 |
|
count = 1; |
1574 |
< |
if ((val = mf.remap(k, null)) != null) { |
1574 |
> |
if ((val = mf.apply(k, null)) != null) { |
1575 |
|
node.val = val; |
1576 |
|
delta = 1; |
1577 |
|
} |
1596 |
|
count = 1; |
1597 |
|
TreeNode p = t.getTreeNode(h, k, t.root); |
1598 |
|
Object pv = (p == null) ? null : p.val; |
1599 |
< |
if ((val = mf.remap(k, (V)pv)) != null) { |
1599 |
> |
if ((val = mf.apply(k, (V)pv)) != null) { |
1600 |
|
if (p != null) |
1601 |
|
p.val = val; |
1602 |
|
else { |
1632 |
|
if ((e.hash & HASH_BITS) == h && |
1633 |
|
(ev = e.val) != null && |
1634 |
|
((ek = e.key) == k || k.equals(ek))) { |
1635 |
< |
val = mf.remap(k, (V)ev); |
1635 |
> |
val = mf.apply(k, (V)ev); |
1636 |
|
if (val != null) |
1637 |
|
e.val = val; |
1638 |
|
else { |
1647 |
|
} |
1648 |
|
pred = e; |
1649 |
|
if ((e = e.next) == null) { |
1650 |
< |
if ((val = mf.remap(k, null)) != null) { |
1650 |
> |
if (!onlyIfPresent && (val = mf.apply(k, null)) != null) { |
1651 |
|
pred.next = new Node(h, k, val, null); |
1652 |
|
delta = 1; |
1653 |
|
if (count >= TREE_THRESHOLD) |
1678 |
|
return val; |
1679 |
|
} |
1680 |
|
|
1681 |
+ |
/** Implementation for merge */ |
1682 |
+ |
@SuppressWarnings("unchecked") private final Object internalMerge |
1683 |
+ |
(K k, V v, BiFun<? super V, ? super V, ? extends V> mf) { |
1684 |
+ |
int h = spread(k.hashCode()); |
1685 |
+ |
Object val = null; |
1686 |
+ |
int delta = 0; |
1687 |
+ |
int count = 0; |
1688 |
+ |
for (Node[] tab = table;;) { |
1689 |
+ |
int i; Node f; int fh; Object fk, fv; |
1690 |
+ |
if (tab == null) |
1691 |
+ |
tab = initTable(); |
1692 |
+ |
else if ((f = tabAt(tab, i = (tab.length - 1) & h)) == null) { |
1693 |
+ |
if (casTabAt(tab, i, null, new Node(h, k, v, null))) { |
1694 |
+ |
delta = 1; |
1695 |
+ |
val = v; |
1696 |
+ |
break; |
1697 |
+ |
} |
1698 |
+ |
} |
1699 |
+ |
else if ((fh = f.hash) == MOVED) { |
1700 |
+ |
if ((fk = f.key) instanceof TreeBin) { |
1701 |
+ |
TreeBin t = (TreeBin)fk; |
1702 |
+ |
t.acquire(0); |
1703 |
+ |
try { |
1704 |
+ |
if (tabAt(tab, i) == f) { |
1705 |
+ |
count = 1; |
1706 |
+ |
TreeNode p = t.getTreeNode(h, k, t.root); |
1707 |
+ |
val = (p == null) ? v : mf.apply((V)p.val, v); |
1708 |
+ |
if (val != null) { |
1709 |
+ |
if (p != null) |
1710 |
+ |
p.val = val; |
1711 |
+ |
else { |
1712 |
+ |
count = 2; |
1713 |
+ |
delta = 1; |
1714 |
+ |
t.putTreeNode(h, k, val); |
1715 |
+ |
} |
1716 |
+ |
} |
1717 |
+ |
else if (p != null) { |
1718 |
+ |
delta = -1; |
1719 |
+ |
t.deleteTreeNode(p); |
1720 |
+ |
} |
1721 |
+ |
} |
1722 |
+ |
} finally { |
1723 |
+ |
t.release(0); |
1724 |
+ |
} |
1725 |
+ |
if (count != 0) |
1726 |
+ |
break; |
1727 |
+ |
} |
1728 |
+ |
else |
1729 |
+ |
tab = (Node[])fk; |
1730 |
+ |
} |
1731 |
+ |
else if ((fh & LOCKED) != 0) { |
1732 |
+ |
checkForResize(); |
1733 |
+ |
f.tryAwaitLock(tab, i); |
1734 |
+ |
} |
1735 |
+ |
else if (f.casHash(fh, fh | LOCKED)) { |
1736 |
+ |
try { |
1737 |
+ |
if (tabAt(tab, i) == f) { |
1738 |
+ |
count = 1; |
1739 |
+ |
for (Node e = f, pred = null;; ++count) { |
1740 |
+ |
Object ek, ev; |
1741 |
+ |
if ((e.hash & HASH_BITS) == h && |
1742 |
+ |
(ev = e.val) != null && |
1743 |
+ |
((ek = e.key) == k || k.equals(ek))) { |
1744 |
+ |
val = mf.apply(v, (V)ev); |
1745 |
+ |
if (val != null) |
1746 |
+ |
e.val = val; |
1747 |
+ |
else { |
1748 |
+ |
delta = -1; |
1749 |
+ |
Node en = e.next; |
1750 |
+ |
if (pred != null) |
1751 |
+ |
pred.next = en; |
1752 |
+ |
else |
1753 |
+ |
setTabAt(tab, i, en); |
1754 |
+ |
} |
1755 |
+ |
break; |
1756 |
+ |
} |
1757 |
+ |
pred = e; |
1758 |
+ |
if ((e = e.next) == null) { |
1759 |
+ |
val = v; |
1760 |
+ |
pred.next = new Node(h, k, val, null); |
1761 |
+ |
delta = 1; |
1762 |
+ |
if (count >= TREE_THRESHOLD) |
1763 |
+ |
replaceWithTreeBin(tab, i, k); |
1764 |
+ |
break; |
1765 |
+ |
} |
1766 |
+ |
} |
1767 |
+ |
} |
1768 |
+ |
} finally { |
1769 |
+ |
if (!f.casHash(fh | LOCKED, fh)) { |
1770 |
+ |
f.hash = fh; |
1771 |
+ |
synchronized (f) { f.notifyAll(); }; |
1772 |
+ |
} |
1773 |
+ |
} |
1774 |
+ |
if (count != 0) { |
1775 |
+ |
if (tab.length <= 64) |
1776 |
+ |
count = 2; |
1777 |
+ |
break; |
1778 |
+ |
} |
1779 |
+ |
} |
1780 |
+ |
} |
1781 |
+ |
if (delta != 0) { |
1782 |
+ |
counter.add((long)delta); |
1783 |
+ |
if (count > 1) |
1784 |
+ |
checkForResize(); |
1785 |
+ |
} |
1786 |
+ |
return val; |
1787 |
+ |
} |
1788 |
+ |
|
1789 |
|
/** Implementation for putAll */ |
1790 |
|
private final void internalPutAll(Map<?, ?> m) { |
1791 |
|
tryPresize(m.size()); |
2010 |
|
for (int i = bin;;) { // start upwards sweep |
2011 |
|
int fh; Node f; |
2012 |
|
if ((f = tabAt(tab, i)) == null) { |
2013 |
< |
if (bin >= 0) { // no lock needed (or available) |
2013 |
> |
if (bin >= 0) { // Unbuffered; no lock needed (or available) |
2014 |
|
if (!casTabAt(tab, i, f, fwd)) |
2015 |
|
continue; |
2016 |
|
} |
2186 |
|
try { |
2187 |
|
if (tabAt(tab, i) == f) { |
2188 |
|
for (Node p = t.first; p != null; p = p.next) { |
2189 |
< |
p.val = null; |
2190 |
< |
--delta; |
2189 |
> |
if (p.val != null) { // (currently always true) |
2190 |
> |
p.val = null; |
2191 |
> |
--delta; |
2192 |
> |
} |
2193 |
|
} |
2194 |
|
t.first = null; |
2195 |
|
t.root = null; |
2211 |
|
try { |
2212 |
|
if (tabAt(tab, i) == f) { |
2213 |
|
for (Node e = f; e != null; e = e.next) { |
2214 |
< |
e.val = null; |
2215 |
< |
--delta; |
2214 |
> |
if (e.val != null) { // (currently always true) |
2215 |
> |
e.val = null; |
2216 |
> |
--delta; |
2217 |
> |
} |
2218 |
|
} |
2219 |
|
setTabAt(tab, i, null); |
2220 |
|
++i; |
2235 |
|
|
2236 |
|
/** |
2237 |
|
* Encapsulates traversal for methods such as containsValue; also |
2238 |
< |
* serves as a base class for other iterators. |
2238 |
> |
* serves as a base class for other iterators and bulk tasks. |
2239 |
|
* |
2240 |
|
* At each step, the iterator snapshots the key ("nextKey") and |
2241 |
|
* value ("nextVal") of a valid node (i.e., one that, at point of |
2269 |
|
* paranoically cope with potential sharing by users of iterators |
2270 |
|
* across threads, iteration terminates if a bounds checks fails |
2271 |
|
* for a table read. |
2272 |
+ |
* |
2273 |
+ |
* This class extends ForkJoinTask to streamline parallel |
2274 |
+ |
* iteration in bulk operations (see BulkTask). This adds only an |
2275 |
+ |
* int of space overhead, which is close enough to negligible in |
2276 |
+ |
* cases where it is not needed to not worry about it. Because |
2277 |
+ |
* ForkJoinTask is Serializable, but iterators need not be, we |
2278 |
+ |
* need to add warning suppressions. |
2279 |
|
*/ |
2280 |
< |
static class InternalIterator<K,V> { |
2280 |
> |
@SuppressWarnings("serial") static class Traverser<K,V,R> extends ForkJoinTask<R> { |
2281 |
|
final ConcurrentHashMapV8<K, V> map; |
2282 |
|
Node next; // the next entry to use |
2283 |
|
Node last; // the last entry used |
2290 |
|
final int baseSize; // initial table size |
2291 |
|
|
2292 |
|
/** Creates iterator for all entries in the table. */ |
2293 |
< |
InternalIterator(ConcurrentHashMapV8<K, V> map) { |
2293 |
> |
Traverser(ConcurrentHashMapV8<K, V> map) { |
2294 |
|
this.tab = (this.map = map).table; |
2295 |
|
baseLimit = baseSize = (tab == null) ? 0 : tab.length; |
2296 |
|
} |
2297 |
|
|
2298 |
< |
/** Creates iterator for clone() and split() methods. */ |
2299 |
< |
InternalIterator(InternalIterator<K,V> it, boolean split) { |
2298 |
> |
/** Creates iterator for split() methods */ |
2299 |
> |
Traverser(Traverser<K,V,?> it) { |
2300 |
|
this.map = it.map; |
2301 |
|
this.tab = it.tab; |
2302 |
|
this.baseSize = it.baseSize; |
2303 |
< |
int lo = it.baseIndex; |
2304 |
< |
int hi = this.baseLimit = it.baseLimit; |
2197 |
< |
this.index = this.baseIndex = |
2198 |
< |
(split) ? (it.baseLimit = (lo + hi + 1) >>> 1) : lo; |
2303 |
> |
it.baseLimit = this.index = this.baseIndex = |
2304 |
> |
((this.baseLimit = it.baseLimit) + it.baseIndex + 1) >>> 1; |
2305 |
|
} |
2306 |
|
|
2307 |
|
/** |
2336 |
|
} |
2337 |
|
|
2338 |
|
public final void remove() { |
2339 |
< |
if (nextVal == null) |
2339 |
> |
if (nextVal == null && last == null) |
2340 |
|
advance(); |
2341 |
|
Node e = last; |
2342 |
|
if (e == null) |
2350 |
|
} |
2351 |
|
|
2352 |
|
public final boolean hasMoreElements() { return hasNext(); } |
2353 |
+ |
public final void setRawResult(Object x) { } |
2354 |
+ |
public R getRawResult() { return null; } |
2355 |
+ |
public boolean exec() { return true; } |
2356 |
|
} |
2357 |
|
|
2358 |
|
/* ---------------- Public operations -------------- */ |
2439 |
|
if (initialCapacity < concurrencyLevel) // Use at least as many bins |
2440 |
|
initialCapacity = concurrencyLevel; // as estimated threads |
2441 |
|
long size = (long)(1.0 + (long)initialCapacity / loadFactor); |
2442 |
< |
int cap = ((size >= (long)MAXIMUM_CAPACITY) ? |
2443 |
< |
MAXIMUM_CAPACITY: tableSizeFor((int)size)); |
2442 |
> |
int cap = (size >= (long)MAXIMUM_CAPACITY) ? |
2443 |
> |
MAXIMUM_CAPACITY : tableSizeFor((int)size); |
2444 |
|
this.counter = new LongAdder(); |
2445 |
|
this.sizeCtl = cap; |
2446 |
|
} |
2462 |
|
(int)n); |
2463 |
|
} |
2464 |
|
|
2465 |
< |
final long longSize() { // accurate version of size needed for views |
2465 |
> |
/** |
2466 |
> |
* Returns the number of mappings. This method should be used |
2467 |
> |
* instead of {@link #size} because a ConcurrentHashMap may |
2468 |
> |
* contain more mappings than can be represented as an int. The |
2469 |
> |
* value returned is a snapshot; the actual count may differ if |
2470 |
> |
* there are ongoing concurrent insertions or removals. |
2471 |
> |
* |
2472 |
> |
* @return the number of mappings |
2473 |
> |
*/ |
2474 |
> |
public long mappingCount() { |
2475 |
|
long n = counter.sum(); |
2476 |
< |
return (n < 0L) ? 0L : n; |
2476 |
> |
return (n < 0L) ? 0L : n; // ignore transient negative values |
2477 |
|
} |
2478 |
|
|
2479 |
|
/** |
2487 |
|
* |
2488 |
|
* @throws NullPointerException if the specified key is null |
2489 |
|
*/ |
2490 |
< |
@SuppressWarnings("unchecked") |
2373 |
< |
public V get(Object key) { |
2490 |
> |
@SuppressWarnings("unchecked") public V get(Object key) { |
2491 |
|
if (key == null) |
2492 |
|
throw new NullPointerException(); |
2493 |
|
return (V)internalGet(key); |
2494 |
|
} |
2495 |
|
|
2496 |
|
/** |
2497 |
+ |
* Returns the value to which the specified key is mapped, |
2498 |
+ |
* or the gieven defaultValue if this map contains no mapping for the key. |
2499 |
+ |
* |
2500 |
+ |
* @param key the key |
2501 |
+ |
* @param defaultValue the value to return if this map contains |
2502 |
+ |
* no mapping for the given key. |
2503 |
+ |
* @return the mapping for the key, if present; else the defaultValue |
2504 |
+ |
* @throws NullPointerException if the specified key is null |
2505 |
+ |
*/ |
2506 |
+ |
@SuppressWarnings("unchecked") public V getValueOrDefault(Object key, V defaultValue) { |
2507 |
+ |
if (key == null) |
2508 |
+ |
throw new NullPointerException(); |
2509 |
+ |
V v = (V) internalGet(key); |
2510 |
+ |
return v == null ? defaultValue : v; |
2511 |
+ |
} |
2512 |
+ |
|
2513 |
+ |
/** |
2514 |
|
* Tests if the specified object is a key in this table. |
2515 |
|
* |
2516 |
|
* @param key possible key |
2539 |
|
if (value == null) |
2540 |
|
throw new NullPointerException(); |
2541 |
|
Object v; |
2542 |
< |
InternalIterator<K,V> it = new InternalIterator<K,V>(this); |
2542 |
> |
Traverser<K,V,Object> it = new Traverser<K,V,Object>(this); |
2543 |
|
while ((v = it.advance()) != null) { |
2544 |
|
if (v == value || value.equals(v)) |
2545 |
|
return true; |
2579 |
|
* {@code null} if there was no mapping for {@code key} |
2580 |
|
* @throws NullPointerException if the specified key or value is null |
2581 |
|
*/ |
2582 |
< |
@SuppressWarnings("unchecked") |
2449 |
< |
public V put(K key, V value) { |
2582 |
> |
@SuppressWarnings("unchecked") public V put(K key, V value) { |
2583 |
|
if (key == null || value == null) |
2584 |
|
throw new NullPointerException(); |
2585 |
|
return (V)internalPut(key, value); |
2592 |
|
* or {@code null} if there was no mapping for the key |
2593 |
|
* @throws NullPointerException if the specified key or value is null |
2594 |
|
*/ |
2595 |
< |
@SuppressWarnings("unchecked") |
2463 |
< |
public V putIfAbsent(K key, V value) { |
2595 |
> |
@SuppressWarnings("unchecked") public V putIfAbsent(K key, V value) { |
2596 |
|
if (key == null || value == null) |
2597 |
|
throw new NullPointerException(); |
2598 |
|
return (V)internalPutIfAbsent(key, value); |
2616 |
|
* <pre> {@code |
2617 |
|
* if (map.containsKey(key)) |
2618 |
|
* return map.get(key); |
2619 |
< |
* value = mappingFunction.map(key); |
2619 |
> |
* value = mappingFunction.apply(key); |
2620 |
|
* if (value != null) |
2621 |
|
* map.put(key, value); |
2622 |
|
* return value;}</pre> |
2633 |
|
* memoized result, as in: |
2634 |
|
* |
2635 |
|
* <pre> {@code |
2636 |
< |
* map.computeIfAbsent(key, new MappingFunction<K, V>() { |
2636 |
> |
* map.computeIfAbsent(key, new Fun<K, V>() { |
2637 |
|
* public V map(K k) { return new Value(f(k)); }});}</pre> |
2638 |
|
* |
2639 |
|
* @param key key with which the specified value is to be associated |
2648 |
|
* @throws RuntimeException or Error if the mappingFunction does so, |
2649 |
|
* in which case the mapping is left unestablished |
2650 |
|
*/ |
2651 |
< |
@SuppressWarnings("unchecked") |
2652 |
< |
public V computeIfAbsent(K key, MappingFunction<? super K, ? extends V> mappingFunction) { |
2651 |
> |
@SuppressWarnings("unchecked") public V computeIfAbsent |
2652 |
> |
(K key, Fun<? super K, ? extends V> mappingFunction) { |
2653 |
|
if (key == null || mappingFunction == null) |
2654 |
|
throw new NullPointerException(); |
2655 |
|
return (V)internalComputeIfAbsent(key, mappingFunction); |
2656 |
|
} |
2657 |
|
|
2658 |
|
/** |
2659 |
+ |
* If the given key is present, computes a new mapping value given a key and |
2660 |
+ |
* its current mapped value. This is equivalent to |
2661 |
+ |
* <pre> {@code |
2662 |
+ |
* if (map.containsKey(key)) { |
2663 |
+ |
* value = remappingFunction.apply(key, map.get(key)); |
2664 |
+ |
* if (value != null) |
2665 |
+ |
* map.put(key, value); |
2666 |
+ |
* else |
2667 |
+ |
* map.remove(key); |
2668 |
+ |
* } |
2669 |
+ |
* }</pre> |
2670 |
+ |
* |
2671 |
+ |
* except that the action is performed atomically. If the |
2672 |
+ |
* function returns {@code null}, the mapping is removed. If the |
2673 |
+ |
* function itself throws an (unchecked) exception, the exception |
2674 |
+ |
* is rethrown to its caller, and the current mapping is left |
2675 |
+ |
* unchanged. Some attempted update operations on this map by |
2676 |
+ |
* other threads may be blocked while computation is in progress, |
2677 |
+ |
* so the computation should be short and simple, and must not |
2678 |
+ |
* attempt to update any other mappings of this Map. For example, |
2679 |
+ |
* to either create or append new messages to a value mapping: |
2680 |
+ |
* |
2681 |
+ |
* @param key key with which the specified value is to be associated |
2682 |
+ |
* @param remappingFunction the function to compute a value |
2683 |
+ |
* @return the new value associated with the specified key, or null if none |
2684 |
+ |
* @throws NullPointerException if the specified key or remappingFunction |
2685 |
+ |
* is null |
2686 |
+ |
* @throws IllegalStateException if the computation detectably |
2687 |
+ |
* attempts a recursive update to this map that would |
2688 |
+ |
* otherwise never complete |
2689 |
+ |
* @throws RuntimeException or Error if the remappingFunction does so, |
2690 |
+ |
* in which case the mapping is unchanged |
2691 |
+ |
*/ |
2692 |
+ |
@SuppressWarnings("unchecked") public V computeIfPresent |
2693 |
+ |
(K key, BiFun<? super K, ? super V, ? extends V> remappingFunction) { |
2694 |
+ |
if (key == null || remappingFunction == null) |
2695 |
+ |
throw new NullPointerException(); |
2696 |
+ |
return (V)internalCompute(key, true, remappingFunction); |
2697 |
+ |
} |
2698 |
+ |
|
2699 |
+ |
/** |
2700 |
|
* Computes a new mapping value given a key and |
2701 |
|
* its current mapped value (or {@code null} if there is no current |
2702 |
|
* mapping). This is equivalent to |
2703 |
|
* <pre> {@code |
2704 |
< |
* value = remappingFunction.remap(key, map.get(key)); |
2704 |
> |
* value = remappingFunction.apply(key, map.get(key)); |
2705 |
|
* if (value != null) |
2706 |
|
* map.put(key, value); |
2707 |
|
* else |
2721 |
|
* <pre> {@code |
2722 |
|
* Map<Key, String> map = ...; |
2723 |
|
* final String msg = ...; |
2724 |
< |
* map.compute(key, new RemappingFunction<Key, String>() { |
2725 |
< |
* public String remap(Key k, String v) { |
2724 |
> |
* map.compute(key, new BiFun<Key, String, String>() { |
2725 |
> |
* public String apply(Key k, String v) { |
2726 |
|
* return (v == null) ? msg : v + msg;});}}</pre> |
2727 |
|
* |
2728 |
|
* @param key key with which the specified value is to be associated |
2729 |
|
* @param remappingFunction the function to compute a value |
2730 |
< |
* @return the new value associated with |
2558 |
< |
* the specified key, or null if none. |
2730 |
> |
* @return the new value associated with the specified key, or null if none |
2731 |
|
* @throws NullPointerException if the specified key or remappingFunction |
2732 |
|
* is null |
2733 |
|
* @throws IllegalStateException if the computation detectably |
2736 |
|
* @throws RuntimeException or Error if the remappingFunction does so, |
2737 |
|
* in which case the mapping is unchanged |
2738 |
|
*/ |
2739 |
< |
@SuppressWarnings("unchecked") |
2740 |
< |
public V compute(K key, RemappingFunction<? super K, V> remappingFunction) { |
2739 |
> |
@SuppressWarnings("unchecked") public V compute |
2740 |
> |
(K key, BiFun<? super K, ? super V, ? extends V> remappingFunction) { |
2741 |
|
if (key == null || remappingFunction == null) |
2742 |
|
throw new NullPointerException(); |
2743 |
< |
return (V)internalCompute(key, remappingFunction); |
2743 |
> |
return (V)internalCompute(key, false, remappingFunction); |
2744 |
> |
} |
2745 |
> |
|
2746 |
> |
/** |
2747 |
> |
* If the specified key is not already associated |
2748 |
> |
* with a value, associate it with the given value. |
2749 |
> |
* Otherwise, replace the value with the results of |
2750 |
> |
* the given remapping function. This is equivalent to: |
2751 |
> |
* <pre> {@code |
2752 |
> |
* if (!map.containsKey(key)) |
2753 |
> |
* map.put(value); |
2754 |
> |
* else { |
2755 |
> |
* newValue = remappingFunction.apply(map.get(key), value); |
2756 |
> |
* if (value != null) |
2757 |
> |
* map.put(key, value); |
2758 |
> |
* else |
2759 |
> |
* map.remove(key); |
2760 |
> |
* } |
2761 |
> |
* }</pre> |
2762 |
> |
* except that the action is performed atomically. If the |
2763 |
> |
* function returns {@code null}, the mapping is removed. If the |
2764 |
> |
* function itself throws an (unchecked) exception, the exception |
2765 |
> |
* is rethrown to its caller, and the current mapping is left |
2766 |
> |
* unchanged. Some attempted update operations on this map by |
2767 |
> |
* other threads may be blocked while computation is in progress, |
2768 |
> |
* so the computation should be short and simple, and must not |
2769 |
> |
* attempt to update any other mappings of this Map. |
2770 |
> |
*/ |
2771 |
> |
@SuppressWarnings("unchecked") public V merge |
2772 |
> |
(K key, V value, BiFun<? super V, ? super V, ? extends V> remappingFunction) { |
2773 |
> |
if (key == null || value == null || remappingFunction == null) |
2774 |
> |
throw new NullPointerException(); |
2775 |
> |
return (V)internalMerge(key, value, remappingFunction); |
2776 |
|
} |
2777 |
|
|
2778 |
|
/** |
2784 |
|
* {@code null} if there was no mapping for {@code key} |
2785 |
|
* @throws NullPointerException if the specified key is null |
2786 |
|
*/ |
2787 |
< |
@SuppressWarnings("unchecked") |
2584 |
< |
public V remove(Object key) { |
2787 |
> |
@SuppressWarnings("unchecked") public V remove(Object key) { |
2788 |
|
if (key == null) |
2789 |
|
throw new NullPointerException(); |
2790 |
|
return (V)internalReplace(key, null, null); |
2821 |
|
* or {@code null} if there was no mapping for the key |
2822 |
|
* @throws NullPointerException if the specified key or value is null |
2823 |
|
*/ |
2824 |
< |
@SuppressWarnings("unchecked") |
2622 |
< |
public V replace(K key, V value) { |
2824 |
> |
@SuppressWarnings("unchecked") public V replace(K key, V value) { |
2825 |
|
if (key == null || value == null) |
2826 |
|
throw new NullPointerException(); |
2827 |
|
return (V)internalReplace(key, value, null); |
2918 |
|
} |
2919 |
|
|
2920 |
|
/** |
2921 |
< |
* Returns a partionable iterator of the keys in this map. |
2921 |
> |
* Returns a partitionable iterator of the keys in this map. |
2922 |
|
* |
2923 |
< |
* @return a partionable iterator of the keys in this map |
2923 |
> |
* @return a partitionable iterator of the keys in this map |
2924 |
|
*/ |
2925 |
|
public Spliterator<K> keySpliterator() { |
2926 |
|
return new KeyIterator<K,V>(this); |
2927 |
|
} |
2928 |
|
|
2929 |
|
/** |
2930 |
< |
* Returns a partionable iterator of the values in this map. |
2930 |
> |
* Returns a partitionable iterator of the values in this map. |
2931 |
|
* |
2932 |
< |
* @return a partionable iterator of the values in this map |
2932 |
> |
* @return a partitionable iterator of the values in this map |
2933 |
|
*/ |
2934 |
|
public Spliterator<V> valueSpliterator() { |
2935 |
|
return new ValueIterator<K,V>(this); |
2936 |
|
} |
2937 |
|
|
2938 |
|
/** |
2939 |
< |
* Returns a partionable iterator of the entries in this map. |
2939 |
> |
* Returns a partitionable iterator of the entries in this map. |
2940 |
|
* |
2941 |
< |
* @return a partionable iterator of the entries in this map |
2941 |
> |
* @return a partitionable iterator of the entries in this map |
2942 |
|
*/ |
2943 |
|
public Spliterator<Map.Entry<K,V>> entrySpliterator() { |
2944 |
|
return new EntryIterator<K,V>(this); |
2953 |
|
*/ |
2954 |
|
public int hashCode() { |
2955 |
|
int h = 0; |
2956 |
< |
InternalIterator<K,V> it = new InternalIterator<K,V>(this); |
2956 |
> |
Traverser<K,V,Object> it = new Traverser<K,V,Object>(this); |
2957 |
|
Object v; |
2958 |
|
while ((v = it.advance()) != null) { |
2959 |
|
h += it.nextKey.hashCode() ^ v.hashCode(); |
2973 |
|
* @return a string representation of this map |
2974 |
|
*/ |
2975 |
|
public String toString() { |
2976 |
< |
InternalIterator<K,V> it = new InternalIterator<K,V>(this); |
2976 |
> |
Traverser<K,V,Object> it = new Traverser<K,V,Object>(this); |
2977 |
|
StringBuilder sb = new StringBuilder(); |
2978 |
|
sb.append('{'); |
2979 |
|
Object v; |
3006 |
|
if (!(o instanceof Map)) |
3007 |
|
return false; |
3008 |
|
Map<?,?> m = (Map<?,?>) o; |
3009 |
< |
InternalIterator<K,V> it = new InternalIterator<K,V>(this); |
3009 |
> |
Traverser<K,V,Object> it = new Traverser<K,V,Object>(this); |
3010 |
|
Object val; |
3011 |
|
while ((val = it.advance()) != null) { |
3012 |
|
Object v = m.get(it.nextKey); |
3027 |
|
|
3028 |
|
/* ----------------Iterators -------------- */ |
3029 |
|
|
3030 |
< |
static final class KeyIterator<K,V> extends InternalIterator<K,V> |
3030 |
> |
@SuppressWarnings("serial") static final class KeyIterator<K,V> extends Traverser<K,V,Object> |
3031 |
|
implements Spliterator<K>, Enumeration<K> { |
3032 |
|
KeyIterator(ConcurrentHashMapV8<K, V> map) { super(map); } |
3033 |
< |
KeyIterator(InternalIterator<K,V> it, boolean split) { |
3034 |
< |
super(it, split); |
3033 |
> |
KeyIterator(Traverser<K,V,Object> it) { |
3034 |
> |
super(it); |
3035 |
|
} |
3036 |
|
public KeyIterator<K,V> split() { |
3037 |
|
if (last != null || (next != null && nextVal == null)) |
3038 |
|
throw new IllegalStateException(); |
3039 |
< |
return new KeyIterator<K,V>(this, true); |
3039 |
> |
return new KeyIterator<K,V>(this); |
3040 |
|
} |
3041 |
< |
public KeyIterator<K,V> clone() { |
2840 |
< |
if (last != null || (next != null && nextVal == null)) |
2841 |
< |
throw new IllegalStateException(); |
2842 |
< |
return new KeyIterator<K,V>(this, false); |
2843 |
< |
} |
2844 |
< |
|
2845 |
< |
@SuppressWarnings("unchecked") |
2846 |
< |
public final K next() { |
3041 |
> |
@SuppressWarnings("unchecked") public final K next() { |
3042 |
|
if (nextVal == null && advance() == null) |
3043 |
|
throw new NoSuchElementException(); |
3044 |
|
Object k = nextKey; |
3049 |
|
public final K nextElement() { return next(); } |
3050 |
|
} |
3051 |
|
|
3052 |
< |
static final class ValueIterator<K,V> extends InternalIterator<K,V> |
3052 |
> |
@SuppressWarnings("serial") static final class ValueIterator<K,V> extends Traverser<K,V,Object> |
3053 |
|
implements Spliterator<V>, Enumeration<V> { |
3054 |
|
ValueIterator(ConcurrentHashMapV8<K, V> map) { super(map); } |
3055 |
< |
ValueIterator(InternalIterator<K,V> it, boolean split) { |
3056 |
< |
super(it, split); |
3055 |
> |
ValueIterator(Traverser<K,V,Object> it) { |
3056 |
> |
super(it); |
3057 |
|
} |
3058 |
|
public ValueIterator<K,V> split() { |
3059 |
|
if (last != null || (next != null && nextVal == null)) |
3060 |
|
throw new IllegalStateException(); |
3061 |
< |
return new ValueIterator<K,V>(this, true); |
3061 |
> |
return new ValueIterator<K,V>(this); |
3062 |
|
} |
3063 |
|
|
3064 |
< |
public ValueIterator<K,V> clone() { |
2870 |
< |
if (last != null || (next != null && nextVal == null)) |
2871 |
< |
throw new IllegalStateException(); |
2872 |
< |
return new ValueIterator<K,V>(this, false); |
2873 |
< |
} |
2874 |
< |
|
2875 |
< |
@SuppressWarnings("unchecked") |
2876 |
< |
public final V next() { |
3064 |
> |
@SuppressWarnings("unchecked") public final V next() { |
3065 |
|
Object v; |
3066 |
|
if ((v = nextVal) == null && (v = advance()) == null) |
3067 |
|
throw new NoSuchElementException(); |
3072 |
|
public final V nextElement() { return next(); } |
3073 |
|
} |
3074 |
|
|
3075 |
< |
static final class EntryIterator<K,V> extends InternalIterator<K,V> |
3075 |
> |
@SuppressWarnings("serial") static final class EntryIterator<K,V> extends Traverser<K,V,Object> |
3076 |
|
implements Spliterator<Map.Entry<K,V>> { |
3077 |
|
EntryIterator(ConcurrentHashMapV8<K, V> map) { super(map); } |
3078 |
< |
EntryIterator(InternalIterator<K,V> it, boolean split) { |
3079 |
< |
super(it, split); |
3078 |
> |
EntryIterator(Traverser<K,V,Object> it) { |
3079 |
> |
super(it); |
3080 |
|
} |
3081 |
|
public EntryIterator<K,V> split() { |
3082 |
|
if (last != null || (next != null && nextVal == null)) |
3083 |
|
throw new IllegalStateException(); |
3084 |
< |
return new EntryIterator<K,V>(this, true); |
2897 |
< |
} |
2898 |
< |
public EntryIterator<K,V> clone() { |
2899 |
< |
if (last != null || (next != null && nextVal == null)) |
2900 |
< |
throw new IllegalStateException(); |
2901 |
< |
return new EntryIterator<K,V>(this, false); |
3084 |
> |
return new EntryIterator<K,V>(this); |
3085 |
|
} |
3086 |
|
|
3087 |
< |
@SuppressWarnings("unchecked") |
2905 |
< |
public final Map.Entry<K,V> next() { |
3087 |
> |
@SuppressWarnings("unchecked") public final Map.Entry<K,V> next() { |
3088 |
|
Object v; |
3089 |
|
if ((v = nextVal) == null && (v = advance()) == null) |
3090 |
|
throw new NoSuchElementException(); |
3122 |
|
|
3123 |
|
/** |
3124 |
|
* Sets our entry's value and writes through to the map. The |
3125 |
< |
* value to return is somewhat arbitrary here. Since a we do |
3126 |
< |
* not necessarily track asynchronous changes, the most recent |
3125 |
> |
* value to return is somewhat arbitrary here. Since we do not |
3126 |
> |
* necessarily track asynchronous changes, the most recent |
3127 |
|
* "previous" value could be different from what we return (or |
3128 |
|
* could even have been removed in which case the put will |
3129 |
|
* re-establish). We do not and cannot guarantee more. |
3142 |
|
/** |
3143 |
|
* Base class for views. |
3144 |
|
*/ |
3145 |
< |
static abstract class MapView<K, V> { |
3145 |
> |
static abstract class CHMView<K, V> { |
3146 |
|
final ConcurrentHashMapV8<K, V> map; |
3147 |
< |
MapView(ConcurrentHashMapV8<K, V> map) { this.map = map; } |
3147 |
> |
CHMView(ConcurrentHashMapV8<K, V> map) { this.map = map; } |
3148 |
|
public final int size() { return map.size(); } |
3149 |
|
public final boolean isEmpty() { return map.isEmpty(); } |
3150 |
|
public final void clear() { map.clear(); } |
3157 |
|
private static final String oomeMsg = "Required array size too large"; |
3158 |
|
|
3159 |
|
public final Object[] toArray() { |
3160 |
< |
long sz = map.longSize(); |
3160 |
> |
long sz = map.mappingCount(); |
3161 |
|
if (sz > (long)(MAX_ARRAY_SIZE)) |
3162 |
|
throw new OutOfMemoryError(oomeMsg); |
3163 |
|
int n = (int)sz; |
3179 |
|
return (i == n) ? r : Arrays.copyOf(r, i); |
3180 |
|
} |
3181 |
|
|
3182 |
< |
@SuppressWarnings("unchecked") |
3183 |
< |
public final <T> T[] toArray(T[] a) { |
3002 |
< |
long sz = map.longSize(); |
3182 |
> |
@SuppressWarnings("unchecked") public final <T> T[] toArray(T[] a) { |
3183 |
> |
long sz = map.mappingCount(); |
3184 |
|
if (sz > (long)(MAX_ARRAY_SIZE)) |
3185 |
|
throw new OutOfMemoryError(oomeMsg); |
3186 |
|
int m = (int)sz; |
3267 |
|
|
3268 |
|
} |
3269 |
|
|
3270 |
< |
static final class KeySet<K,V> extends MapView<K,V> implements Set<K> { |
3271 |
< |
KeySet(ConcurrentHashMapV8<K, V> map) { super(map); } |
3270 |
> |
static final class KeySet<K,V> extends CHMView<K,V> implements Set<K> { |
3271 |
> |
KeySet(ConcurrentHashMapV8<K, V> map) { |
3272 |
> |
super(map); |
3273 |
> |
} |
3274 |
|
public final boolean contains(Object o) { return map.containsKey(o); } |
3275 |
|
public final boolean remove(Object o) { return map.remove(o) != null; } |
3276 |
|
public final Iterator<K> iterator() { |
3290 |
|
} |
3291 |
|
} |
3292 |
|
|
3293 |
< |
static final class Values<K,V> extends MapView<K,V> |
3293 |
> |
|
3294 |
> |
static final class Values<K,V> extends CHMView<K,V> |
3295 |
|
implements Collection<V> { |
3296 |
|
Values(ConcurrentHashMapV8<K, V> map) { super(map); } |
3297 |
|
public final boolean contains(Object o) { return map.containsValue(o); } |
3316 |
|
public final boolean addAll(Collection<? extends V> c) { |
3317 |
|
throw new UnsupportedOperationException(); |
3318 |
|
} |
3319 |
+ |
|
3320 |
|
} |
3321 |
|
|
3322 |
< |
static final class EntrySet<K,V> extends MapView<K,V> |
3322 |
> |
static final class EntrySet<K,V> extends CHMView<K,V> |
3323 |
|
implements Set<Map.Entry<K,V>> { |
3324 |
|
EntrySet(ConcurrentHashMapV8<K, V> map) { super(map); } |
3325 |
|
public final boolean contains(Object o) { |
3375 |
|
* for each key-value mapping, followed by a null pair. |
3376 |
|
* The key-value mappings are emitted in no particular order. |
3377 |
|
*/ |
3378 |
< |
@SuppressWarnings("unchecked") |
3379 |
< |
private void writeObject(java.io.ObjectOutputStream s) |
3195 |
< |
throws java.io.IOException { |
3378 |
> |
@SuppressWarnings("unchecked") private void writeObject(java.io.ObjectOutputStream s) |
3379 |
> |
throws java.io.IOException { |
3380 |
|
if (segments == null) { // for serialization compatibility |
3381 |
|
segments = (Segment<K,V>[]) |
3382 |
|
new Segment<?,?>[DEFAULT_CONCURRENCY_LEVEL]; |
3384 |
|
segments[i] = new Segment<K,V>(LOAD_FACTOR); |
3385 |
|
} |
3386 |
|
s.defaultWriteObject(); |
3387 |
< |
InternalIterator<K,V> it = new InternalIterator<K,V>(this); |
3387 |
> |
Traverser<K,V,Object> it = new Traverser<K,V,Object>(this); |
3388 |
|
Object v; |
3389 |
|
while ((v = it.advance()) != null) { |
3390 |
|
s.writeObject(it.nextKey); |
3399 |
|
* Reconstitutes the instance from a stream (that is, deserializes it). |
3400 |
|
* @param s the stream |
3401 |
|
*/ |
3402 |
< |
@SuppressWarnings("unchecked") |
3403 |
< |
private void readObject(java.io.ObjectInputStream s) |
3220 |
< |
throws java.io.IOException, ClassNotFoundException { |
3402 |
> |
@SuppressWarnings("unchecked") private void readObject(java.io.ObjectInputStream s) |
3403 |
> |
throws java.io.IOException, ClassNotFoundException { |
3404 |
|
s.defaultReadObject(); |
3405 |
|
this.segments = null; // unneeded |
3406 |
|
// initialize transient final field |
3477 |
|
} |
3478 |
|
} |
3479 |
|
|
3480 |
+ |
|
3481 |
+ |
// ------------------------------------------------------- |
3482 |
+ |
|
3483 |
+ |
// Sams |
3484 |
+ |
/** Interface describing a void action of one argument */ |
3485 |
+ |
public interface Action<A> { void apply(A a); } |
3486 |
+ |
/** Interface describing a void action of two arguments */ |
3487 |
+ |
public interface BiAction<A,B> { void apply(A a, B b); } |
3488 |
+ |
/** Interface describing a function of one argument */ |
3489 |
+ |
public interface Fun<A,T> { T apply(A a); } |
3490 |
+ |
/** Interface describing a function of two arguments */ |
3491 |
+ |
public interface BiFun<A,B,T> { T apply(A a, B b); } |
3492 |
+ |
/** Interface describing a function of no arguments */ |
3493 |
+ |
public interface Generator<T> { T apply(); } |
3494 |
+ |
/** Interface describing a function mapping its argument to a double */ |
3495 |
+ |
public interface ObjectToDouble<A> { double apply(A a); } |
3496 |
+ |
/** Interface describing a function mapping its argument to a long */ |
3497 |
+ |
public interface ObjectToLong<A> { long apply(A a); } |
3498 |
+ |
/** Interface describing a function mapping its argument to an int */ |
3499 |
+ |
public interface ObjectToInt<A> {int apply(A a); } |
3500 |
+ |
/** Interface describing a function mapping two arguments to a double */ |
3501 |
+ |
public interface ObjectByObjectToDouble<A,B> { double apply(A a, B b); } |
3502 |
+ |
/** Interface describing a function mapping two arguments to a long */ |
3503 |
+ |
public interface ObjectByObjectToLong<A,B> { long apply(A a, B b); } |
3504 |
+ |
/** Interface describing a function mapping two arguments to an int */ |
3505 |
+ |
public interface ObjectByObjectToInt<A,B> {int apply(A a, B b); } |
3506 |
+ |
/** Interface describing a function mapping a double to a double */ |
3507 |
+ |
public interface DoubleToDouble { double apply(double a); } |
3508 |
+ |
/** Interface describing a function mapping a long to a long */ |
3509 |
+ |
public interface LongToLong { long apply(long a); } |
3510 |
+ |
/** Interface describing a function mapping an int to an int */ |
3511 |
+ |
public interface IntToInt { int apply(int a); } |
3512 |
+ |
/** Interface describing a function mapping two doubles to a double */ |
3513 |
+ |
public interface DoubleByDoubleToDouble { double apply(double a, double b); } |
3514 |
+ |
/** Interface describing a function mapping two longs to a long */ |
3515 |
+ |
public interface LongByLongToLong { long apply(long a, long b); } |
3516 |
+ |
/** Interface describing a function mapping two ints to an int */ |
3517 |
+ |
public interface IntByIntToInt { int apply(int a, int b); } |
3518 |
+ |
|
3519 |
+ |
|
3520 |
+ |
// ------------------------------------------------------- |
3521 |
+ |
|
3522 |
+ |
/** |
3523 |
+ |
* Returns an extended {@link Parallel} view of this map using the |
3524 |
+ |
* given executor for bulk parallel operations. |
3525 |
+ |
* |
3526 |
+ |
* @param executor the executor |
3527 |
+ |
* @return a parallel view |
3528 |
+ |
*/ |
3529 |
+ |
public Parallel parallel(ForkJoinPool executor) { |
3530 |
+ |
return new Parallel(executor); |
3531 |
+ |
} |
3532 |
+ |
|
3533 |
+ |
/** |
3534 |
+ |
* An extended view of a ConcurrentHashMap supporting bulk |
3535 |
+ |
* parallel operations. These operations are designed to be |
3536 |
+ |
* safely, and often sensibly, applied even with maps that are |
3537 |
+ |
* being concurrently updated by other threads; for example, when |
3538 |
+ |
* computing a snapshot summary of the values in a shared |
3539 |
+ |
* registry. There are three kinds of operation, each with four |
3540 |
+ |
* forms, accepting functions with Keys, Values, Entries, and |
3541 |
+ |
* (Key, Value) arguments and/or return values. Because the |
3542 |
+ |
* elements of a ConcurrentHashMap are not ordered in any |
3543 |
+ |
* particular way, and may be processed in different orders in |
3544 |
+ |
* different parallel executions, the correctness of supplied |
3545 |
+ |
* functions should not depend on any ordering, or on any other |
3546 |
+ |
* objects or values that may transiently change while computation |
3547 |
+ |
* is in progress; and except for forEach actions, should ideally |
3548 |
+ |
* be side-effect-free. |
3549 |
+ |
* |
3550 |
+ |
* <ul> |
3551 |
+ |
* <li> forEach: Perform a given action on each element. |
3552 |
+ |
* A variant form applies a given transformation on each element |
3553 |
+ |
* before performing the action.</li> |
3554 |
+ |
* |
3555 |
+ |
* <li> search: Return the first available non-null result of |
3556 |
+ |
* applying a given function on each element; skipping further |
3557 |
+ |
* search when a result is found.</li> |
3558 |
+ |
* |
3559 |
+ |
* <li> reduce: Accumulate each element. The supplied reduction |
3560 |
+ |
* function cannot rely on ordering (more formally, it should be |
3561 |
+ |
* both associative and commutative). There are five variants: |
3562 |
+ |
* |
3563 |
+ |
* <ul> |
3564 |
+ |
* |
3565 |
+ |
* <li> Plain reductions. (There is not a form of this method for |
3566 |
+ |
* (key, value) function arguments since there is no corresponding |
3567 |
+ |
* return type.)</li> |
3568 |
+ |
* |
3569 |
+ |
* <li> Mapped reductions that accumulate the results of a given |
3570 |
+ |
* function applied to each element.</li> |
3571 |
+ |
* |
3572 |
+ |
* <li> Reductions to scalar doubles, longs, and ints, using a |
3573 |
+ |
* given basis value.</li> |
3574 |
+ |
* |
3575 |
+ |
* </li> |
3576 |
+ |
* </ul> |
3577 |
+ |
* </ul> |
3578 |
+ |
* |
3579 |
+ |
* <p>The concurrency properties of the bulk operations follow |
3580 |
+ |
* from those of ConcurrentHashMap: Any non-null result returned |
3581 |
+ |
* from {@code get(key)} and related access methods bears a |
3582 |
+ |
* happens-before relation with the associated insertion or |
3583 |
+ |
* update. The result of any bulk operation reflects the |
3584 |
+ |
* composition of these per-element relations (but is not |
3585 |
+ |
* necessarily atomic with respect to the map as a whole unless it |
3586 |
+ |
* is somehow known to be quiescent). Conversely, because keys |
3587 |
+ |
* and values in the map are never null, null serves as a reliable |
3588 |
+ |
* atomic indicator of the current lack of any result. To |
3589 |
+ |
* maintain this property, null serves as an implicit basis for |
3590 |
+ |
* all non-scalar reduction operations. For the double, long, and |
3591 |
+ |
* int versions, the basis should be one that, when combined with |
3592 |
+ |
* any other value, returns that other value (more formally, it |
3593 |
+ |
* should be the identity element for the reduction). Most common |
3594 |
+ |
* reductions have these properties; for example, computing a sum |
3595 |
+ |
* with basis 0 or a minimum with basis MAX_VALUE. |
3596 |
+ |
* |
3597 |
+ |
* <p>Search and transformation functions provided as arguments |
3598 |
+ |
* should similarly return null to indicate the lack of any result |
3599 |
+ |
* (in which case it is not used). In the case of mapped |
3600 |
+ |
* reductions, this also enables transformations to serve as |
3601 |
+ |
* filters, returning null (or, in the case of primitive |
3602 |
+ |
* specializations, the identity basis) if the element should not |
3603 |
+ |
* be combined. You can create compound transformations and |
3604 |
+ |
* filterings by composing them yourself under this "null means |
3605 |
+ |
* there is nothing there now" rule before using them in search or |
3606 |
+ |
* reduce operations. |
3607 |
+ |
* |
3608 |
+ |
* <p>Methods accepting and/or returning Entry arguments maintain |
3609 |
+ |
* key-value associations. They may be useful for example when |
3610 |
+ |
* finding the key for the greatest value. Note that "plain" Entry |
3611 |
+ |
* arguments can be supplied using {@code new |
3612 |
+ |
* AbstractMap.SimpleEntry(k,v)}. |
3613 |
+ |
* |
3614 |
+ |
* <p> Bulk operations may complete abruptly, throwing an |
3615 |
+ |
* exception encountered in the application of a supplied |
3616 |
+ |
* function. Bear in mind when handling such exceptions that other |
3617 |
+ |
* concurrently executing functions could also have thrown |
3618 |
+ |
* exceptions, or would have done so if the first exception had |
3619 |
+ |
* not occurred. |
3620 |
+ |
* |
3621 |
+ |
* <p>Parallel speedups compared to sequential processing are |
3622 |
+ |
* common but not guaranteed. Operations involving brief |
3623 |
+ |
* functions on small maps may execute more slowly than sequential |
3624 |
+ |
* loops if the underlying work to parallelize the computation is |
3625 |
+ |
* more expensive than the computation itself. Similarly, |
3626 |
+ |
* parallelization may not lead to much actual parallelism if all |
3627 |
+ |
* processors are busy performing unrelated tasks. |
3628 |
+ |
* |
3629 |
+ |
* <p> All arguments to all task methods must be non-null. |
3630 |
+ |
* |
3631 |
+ |
* <p><em>jsr166e note: During transition, this class |
3632 |
+ |
* uses nested functional interfaces with different names but the |
3633 |
+ |
* same forms as those expected for JDK8.<em> |
3634 |
+ |
*/ |
3635 |
+ |
public class Parallel { |
3636 |
+ |
final ForkJoinPool fjp; |
3637 |
+ |
|
3638 |
+ |
/** |
3639 |
+ |
* Returns an extended view of this map using the given |
3640 |
+ |
* executor for bulk parallel operations. |
3641 |
+ |
* |
3642 |
+ |
* @param executor the executor |
3643 |
+ |
*/ |
3644 |
+ |
public Parallel(ForkJoinPool executor) { |
3645 |
+ |
this.fjp = executor; |
3646 |
+ |
} |
3647 |
+ |
|
3648 |
+ |
/** |
3649 |
+ |
* Performs the given action for each (key, value). |
3650 |
+ |
* |
3651 |
+ |
* @param action the action |
3652 |
+ |
*/ |
3653 |
+ |
public void forEach(BiAction<K,V> action) { |
3654 |
+ |
fjp.invoke(ForkJoinTasks.forEach |
3655 |
+ |
(ConcurrentHashMapV8.this, action)); |
3656 |
+ |
} |
3657 |
+ |
|
3658 |
+ |
/** |
3659 |
+ |
* Performs the given action for each non-null transformation |
3660 |
+ |
* of each (key, value). |
3661 |
+ |
* |
3662 |
+ |
* @param transformer a function returning the transformation |
3663 |
+ |
* for an element, or null of there is no transformation (in |
3664 |
+ |
* which case the action is not applied). |
3665 |
+ |
* @param action the action |
3666 |
+ |
*/ |
3667 |
+ |
public <U> void forEach(BiFun<? super K, ? super V, ? extends U> transformer, |
3668 |
+ |
Action<U> action) { |
3669 |
+ |
fjp.invoke(ForkJoinTasks.forEach |
3670 |
+ |
(ConcurrentHashMapV8.this, transformer, action)); |
3671 |
+ |
} |
3672 |
+ |
|
3673 |
+ |
/** |
3674 |
+ |
* Returns a non-null result from applying the given search |
3675 |
+ |
* function on each (key, value), or null if none. Upon |
3676 |
+ |
* success, further element processing is suppressed and the |
3677 |
+ |
* results of any other parallel invocations of the search |
3678 |
+ |
* function are ignored. |
3679 |
+ |
* |
3680 |
+ |
* @param searchFunction a function returning a non-null |
3681 |
+ |
* result on success, else null |
3682 |
+ |
* @return a non-null result from applying the given search |
3683 |
+ |
* function on each (key, value), or null if none |
3684 |
+ |
*/ |
3685 |
+ |
public <U> U search(BiFun<? super K, ? super V, ? extends U> searchFunction) { |
3686 |
+ |
return fjp.invoke(ForkJoinTasks.search |
3687 |
+ |
(ConcurrentHashMapV8.this, searchFunction)); |
3688 |
+ |
} |
3689 |
+ |
|
3690 |
+ |
/** |
3691 |
+ |
* Returns the result of accumulating the given transformation |
3692 |
+ |
* of all (key, value) pairs using the given reducer to |
3693 |
+ |
* combine values, or null if none. |
3694 |
+ |
* |
3695 |
+ |
* @param transformer a function returning the transformation |
3696 |
+ |
* for an element, or null of there is no transformation (in |
3697 |
+ |
* which case it is not combined). |
3698 |
+ |
* @param reducer a commutative associative combining function |
3699 |
+ |
* @return the result of accumulating the given transformation |
3700 |
+ |
* of all (key, value) pairs |
3701 |
+ |
*/ |
3702 |
+ |
public <U> U reduce(BiFun<? super K, ? super V, ? extends U> transformer, |
3703 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
3704 |
+ |
return fjp.invoke(ForkJoinTasks.reduce |
3705 |
+ |
(ConcurrentHashMapV8.this, transformer, reducer)); |
3706 |
+ |
} |
3707 |
+ |
|
3708 |
+ |
/** |
3709 |
+ |
* Returns the result of accumulating the given transformation |
3710 |
+ |
* of all (key, value) pairs using the given reducer to |
3711 |
+ |
* combine values, and the given basis as an identity value. |
3712 |
+ |
* |
3713 |
+ |
* @param transformer a function returning the transformation |
3714 |
+ |
* for an element |
3715 |
+ |
* @param basis the identity (initial default value) for the reduction |
3716 |
+ |
* @param reducer a commutative associative combining function |
3717 |
+ |
* @return the result of accumulating the given transformation |
3718 |
+ |
* of all (key, value) pairs |
3719 |
+ |
*/ |
3720 |
+ |
public double reduceToDouble(ObjectByObjectToDouble<? super K, ? super V> transformer, |
3721 |
+ |
double basis, |
3722 |
+ |
DoubleByDoubleToDouble reducer) { |
3723 |
+ |
return fjp.invoke(ForkJoinTasks.reduceToDouble |
3724 |
+ |
(ConcurrentHashMapV8.this, transformer, basis, reducer)); |
3725 |
+ |
} |
3726 |
+ |
|
3727 |
+ |
/** |
3728 |
+ |
* Returns the result of accumulating the given transformation |
3729 |
+ |
* of all (key, value) pairs using the given reducer to |
3730 |
+ |
* combine values, and the given basis as an identity value. |
3731 |
+ |
* |
3732 |
+ |
* @param transformer a function returning the transformation |
3733 |
+ |
* for an element |
3734 |
+ |
* @param basis the identity (initial default value) for the reduction |
3735 |
+ |
* @param reducer a commutative associative combining function |
3736 |
+ |
* @return the result of accumulating the given transformation |
3737 |
+ |
* of all (key, value) pairs |
3738 |
+ |
*/ |
3739 |
+ |
public long reduceToLong(ObjectByObjectToLong<? super K, ? super V> transformer, |
3740 |
+ |
long basis, |
3741 |
+ |
LongByLongToLong reducer) { |
3742 |
+ |
return fjp.invoke(ForkJoinTasks.reduceToLong |
3743 |
+ |
(ConcurrentHashMapV8.this, transformer, basis, reducer)); |
3744 |
+ |
} |
3745 |
+ |
|
3746 |
+ |
/** |
3747 |
+ |
* Returns the result of accumulating the given transformation |
3748 |
+ |
* of all (key, value) pairs using the given reducer to |
3749 |
+ |
* combine values, and the given basis as an identity value. |
3750 |
+ |
* |
3751 |
+ |
* @param transformer a function returning the transformation |
3752 |
+ |
* for an element |
3753 |
+ |
* @param basis the identity (initial default value) for the reduction |
3754 |
+ |
* @param reducer a commutative associative combining function |
3755 |
+ |
* @return the result of accumulating the given transformation |
3756 |
+ |
* of all (key, value) pairs |
3757 |
+ |
*/ |
3758 |
+ |
public int reduceToInt(ObjectByObjectToInt<? super K, ? super V> transformer, |
3759 |
+ |
int basis, |
3760 |
+ |
IntByIntToInt reducer) { |
3761 |
+ |
return fjp.invoke(ForkJoinTasks.reduceToInt |
3762 |
+ |
(ConcurrentHashMapV8.this, transformer, basis, reducer)); |
3763 |
+ |
} |
3764 |
+ |
|
3765 |
+ |
/** |
3766 |
+ |
* Performs the given action for each key. |
3767 |
+ |
* |
3768 |
+ |
* @param action the action |
3769 |
+ |
*/ |
3770 |
+ |
public void forEachKey(Action<K> action) { |
3771 |
+ |
fjp.invoke(ForkJoinTasks.forEachKey |
3772 |
+ |
(ConcurrentHashMapV8.this, action)); |
3773 |
+ |
} |
3774 |
+ |
|
3775 |
+ |
/** |
3776 |
+ |
* Performs the given action for each non-null transformation |
3777 |
+ |
* of each key. |
3778 |
+ |
* |
3779 |
+ |
* @param transformer a function returning the transformation |
3780 |
+ |
* for an element, or null of there is no transformation (in |
3781 |
+ |
* which case the action is not applied). |
3782 |
+ |
* @param action the action |
3783 |
+ |
*/ |
3784 |
+ |
public <U> void forEachKey(Fun<? super K, ? extends U> transformer, |
3785 |
+ |
Action<U> action) { |
3786 |
+ |
fjp.invoke(ForkJoinTasks.forEachKey |
3787 |
+ |
(ConcurrentHashMapV8.this, transformer, action)); |
3788 |
+ |
} |
3789 |
+ |
|
3790 |
+ |
/** |
3791 |
+ |
* Returns a non-null result from applying the given search |
3792 |
+ |
* function on each key, or null if none. Upon success, |
3793 |
+ |
* further element processing is suppressed and the results of |
3794 |
+ |
* any other parallel invocations of the search function are |
3795 |
+ |
* ignored. |
3796 |
+ |
* |
3797 |
+ |
* @param searchFunction a function returning a non-null |
3798 |
+ |
* result on success, else null |
3799 |
+ |
* @return a non-null result from applying the given search |
3800 |
+ |
* function on each key, or null if none |
3801 |
+ |
*/ |
3802 |
+ |
public <U> U searchKeys(Fun<? super K, ? extends U> searchFunction) { |
3803 |
+ |
return fjp.invoke(ForkJoinTasks.searchKeys |
3804 |
+ |
(ConcurrentHashMapV8.this, searchFunction)); |
3805 |
+ |
} |
3806 |
+ |
|
3807 |
+ |
/** |
3808 |
+ |
* Returns the result of accumulating all keys using the given |
3809 |
+ |
* reducer to combine values, or null if none. |
3810 |
+ |
* |
3811 |
+ |
* @param reducer a commutative associative combining function |
3812 |
+ |
* @return the result of accumulating all keys using the given |
3813 |
+ |
* reducer to combine values, or null if none |
3814 |
+ |
*/ |
3815 |
+ |
public K reduceKeys(BiFun<? super K, ? super K, ? extends K> reducer) { |
3816 |
+ |
return fjp.invoke(ForkJoinTasks.reduceKeys |
3817 |
+ |
(ConcurrentHashMapV8.this, reducer)); |
3818 |
+ |
} |
3819 |
+ |
|
3820 |
+ |
/** |
3821 |
+ |
* Returns the result of accumulating the given transformation |
3822 |
+ |
* of all keys using the given reducer to combine values, or |
3823 |
+ |
* null if none. |
3824 |
+ |
* |
3825 |
+ |
* @param transformer a function returning the transformation |
3826 |
+ |
* for an element, or null of there is no transformation (in |
3827 |
+ |
* which case it is not combined). |
3828 |
+ |
* @param reducer a commutative associative combining function |
3829 |
+ |
* @return the result of accumulating the given transformation |
3830 |
+ |
* of all keys |
3831 |
+ |
*/ |
3832 |
+ |
public <U> U reduceKeys(Fun<? super K, ? extends U> transformer, |
3833 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
3834 |
+ |
return fjp.invoke(ForkJoinTasks.reduceKeys |
3835 |
+ |
(ConcurrentHashMapV8.this, transformer, reducer)); |
3836 |
+ |
} |
3837 |
+ |
|
3838 |
+ |
/** |
3839 |
+ |
* Returns the result of accumulating the given transformation |
3840 |
+ |
* of all keys using the given reducer to combine values, and |
3841 |
+ |
* the given basis as an identity value. |
3842 |
+ |
* |
3843 |
+ |
* @param transformer a function returning the transformation |
3844 |
+ |
* for an element |
3845 |
+ |
* @param basis the identity (initial default value) for the reduction |
3846 |
+ |
* @param reducer a commutative associative combining function |
3847 |
+ |
* @return the result of accumulating the given transformation |
3848 |
+ |
* of all keys |
3849 |
+ |
*/ |
3850 |
+ |
public double reduceKeysToDouble(ObjectToDouble<? super K> transformer, |
3851 |
+ |
double basis, |
3852 |
+ |
DoubleByDoubleToDouble reducer) { |
3853 |
+ |
return fjp.invoke(ForkJoinTasks.reduceKeysToDouble |
3854 |
+ |
(ConcurrentHashMapV8.this, transformer, basis, reducer)); |
3855 |
+ |
} |
3856 |
+ |
|
3857 |
+ |
/** |
3858 |
+ |
* Returns the result of accumulating the given transformation |
3859 |
+ |
* of all keys using the given reducer to combine values, and |
3860 |
+ |
* the given basis as an identity value. |
3861 |
+ |
* |
3862 |
+ |
* @param transformer a function returning the transformation |
3863 |
+ |
* for an element |
3864 |
+ |
* @param basis the identity (initial default value) for the reduction |
3865 |
+ |
* @param reducer a commutative associative combining function |
3866 |
+ |
* @return the result of accumulating the given transformation |
3867 |
+ |
* of all keys |
3868 |
+ |
*/ |
3869 |
+ |
public long reduceKeysToLong(ObjectToLong<? super K> transformer, |
3870 |
+ |
long basis, |
3871 |
+ |
LongByLongToLong reducer) { |
3872 |
+ |
return fjp.invoke(ForkJoinTasks.reduceKeysToLong |
3873 |
+ |
(ConcurrentHashMapV8.this, transformer, basis, reducer)); |
3874 |
+ |
} |
3875 |
+ |
|
3876 |
+ |
/** |
3877 |
+ |
* Returns the result of accumulating the given transformation |
3878 |
+ |
* of all keys using the given reducer to combine values, and |
3879 |
+ |
* the given basis as an identity value. |
3880 |
+ |
* |
3881 |
+ |
* @param transformer a function returning the transformation |
3882 |
+ |
* for an element |
3883 |
+ |
* @param basis the identity (initial default value) for the reduction |
3884 |
+ |
* @param reducer a commutative associative combining function |
3885 |
+ |
* @return the result of accumulating the given transformation |
3886 |
+ |
* of all keys |
3887 |
+ |
*/ |
3888 |
+ |
public int reduceKeysToInt(ObjectToInt<? super K> transformer, |
3889 |
+ |
int basis, |
3890 |
+ |
IntByIntToInt reducer) { |
3891 |
+ |
return fjp.invoke(ForkJoinTasks.reduceKeysToInt |
3892 |
+ |
(ConcurrentHashMapV8.this, transformer, basis, reducer)); |
3893 |
+ |
} |
3894 |
+ |
|
3895 |
+ |
/** |
3896 |
+ |
* Performs the given action for each value. |
3897 |
+ |
* |
3898 |
+ |
* @param action the action |
3899 |
+ |
*/ |
3900 |
+ |
public void forEachValue(Action<V> action) { |
3901 |
+ |
fjp.invoke(ForkJoinTasks.forEachValue |
3902 |
+ |
(ConcurrentHashMapV8.this, action)); |
3903 |
+ |
} |
3904 |
+ |
|
3905 |
+ |
/** |
3906 |
+ |
* Performs the given action for each non-null transformation |
3907 |
+ |
* of each value. |
3908 |
+ |
* |
3909 |
+ |
* @param transformer a function returning the transformation |
3910 |
+ |
* for an element, or null of there is no transformation (in |
3911 |
+ |
* which case the action is not applied). |
3912 |
+ |
*/ |
3913 |
+ |
public <U> void forEachValue(Fun<? super V, ? extends U> transformer, |
3914 |
+ |
Action<U> action) { |
3915 |
+ |
fjp.invoke(ForkJoinTasks.forEachValue |
3916 |
+ |
(ConcurrentHashMapV8.this, transformer, action)); |
3917 |
+ |
} |
3918 |
+ |
|
3919 |
+ |
/** |
3920 |
+ |
* Returns a non-null result from applying the given search |
3921 |
+ |
* function on each value, or null if none. Upon success, |
3922 |
+ |
* further element processing is suppressed and the results of |
3923 |
+ |
* any other parallel invocations of the search function are |
3924 |
+ |
* ignored. |
3925 |
+ |
* |
3926 |
+ |
* @param searchFunction a function returning a non-null |
3927 |
+ |
* result on success, else null |
3928 |
+ |
* @return a non-null result from applying the given search |
3929 |
+ |
* function on each value, or null if none |
3930 |
+ |
* |
3931 |
+ |
*/ |
3932 |
+ |
public <U> U searchValues(Fun<? super V, ? extends U> searchFunction) { |
3933 |
+ |
return fjp.invoke(ForkJoinTasks.searchValues |
3934 |
+ |
(ConcurrentHashMapV8.this, searchFunction)); |
3935 |
+ |
} |
3936 |
+ |
|
3937 |
+ |
/** |
3938 |
+ |
* Returns the result of accumulating all values using the |
3939 |
+ |
* given reducer to combine values, or null if none. |
3940 |
+ |
* |
3941 |
+ |
* @param reducer a commutative associative combining function |
3942 |
+ |
* @return the result of accumulating all values |
3943 |
+ |
*/ |
3944 |
+ |
public V reduceValues(BiFun<? super V, ? super V, ? extends V> reducer) { |
3945 |
+ |
return fjp.invoke(ForkJoinTasks.reduceValues |
3946 |
+ |
(ConcurrentHashMapV8.this, reducer)); |
3947 |
+ |
} |
3948 |
+ |
|
3949 |
+ |
/** |
3950 |
+ |
* Returns the result of accumulating the given transformation |
3951 |
+ |
* of all values using the given reducer to combine values, or |
3952 |
+ |
* null if none. |
3953 |
+ |
* |
3954 |
+ |
* @param transformer a function returning the transformation |
3955 |
+ |
* for an element, or null of there is no transformation (in |
3956 |
+ |
* which case it is not combined). |
3957 |
+ |
* @param reducer a commutative associative combining function |
3958 |
+ |
* @return the result of accumulating the given transformation |
3959 |
+ |
* of all values |
3960 |
+ |
*/ |
3961 |
+ |
public <U> U reduceValues(Fun<? super V, ? extends U> transformer, |
3962 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
3963 |
+ |
return fjp.invoke(ForkJoinTasks.reduceValues |
3964 |
+ |
(ConcurrentHashMapV8.this, transformer, reducer)); |
3965 |
+ |
} |
3966 |
+ |
|
3967 |
+ |
/** |
3968 |
+ |
* Returns the result of accumulating the given transformation |
3969 |
+ |
* of all values using the given reducer to combine values, |
3970 |
+ |
* and the given basis as an identity value. |
3971 |
+ |
* |
3972 |
+ |
* @param transformer a function returning the transformation |
3973 |
+ |
* for an element |
3974 |
+ |
* @param basis the identity (initial default value) for the reduction |
3975 |
+ |
* @param reducer a commutative associative combining function |
3976 |
+ |
* @return the result of accumulating the given transformation |
3977 |
+ |
* of all values |
3978 |
+ |
*/ |
3979 |
+ |
public double reduceValuesToDouble(ObjectToDouble<? super V> transformer, |
3980 |
+ |
double basis, |
3981 |
+ |
DoubleByDoubleToDouble reducer) { |
3982 |
+ |
return fjp.invoke(ForkJoinTasks.reduceValuesToDouble |
3983 |
+ |
(ConcurrentHashMapV8.this, transformer, basis, reducer)); |
3984 |
+ |
} |
3985 |
+ |
|
3986 |
+ |
/** |
3987 |
+ |
* Returns the result of accumulating the given transformation |
3988 |
+ |
* of all values using the given reducer to combine values, |
3989 |
+ |
* and the given basis as an identity value. |
3990 |
+ |
* |
3991 |
+ |
* @param transformer a function returning the transformation |
3992 |
+ |
* for an element |
3993 |
+ |
* @param basis the identity (initial default value) for the reduction |
3994 |
+ |
* @param reducer a commutative associative combining function |
3995 |
+ |
* @return the result of accumulating the given transformation |
3996 |
+ |
* of all values |
3997 |
+ |
*/ |
3998 |
+ |
public long reduceValuesToLong(ObjectToLong<? super V> transformer, |
3999 |
+ |
long basis, |
4000 |
+ |
LongByLongToLong reducer) { |
4001 |
+ |
return fjp.invoke(ForkJoinTasks.reduceValuesToLong |
4002 |
+ |
(ConcurrentHashMapV8.this, transformer, basis, reducer)); |
4003 |
+ |
} |
4004 |
+ |
|
4005 |
+ |
/** |
4006 |
+ |
* Returns the result of accumulating the given transformation |
4007 |
+ |
* of all values using the given reducer to combine values, |
4008 |
+ |
* and the given basis as an identity value. |
4009 |
+ |
* |
4010 |
+ |
* @param transformer a function returning the transformation |
4011 |
+ |
* for an element |
4012 |
+ |
* @param basis the identity (initial default value) for the reduction |
4013 |
+ |
* @param reducer a commutative associative combining function |
4014 |
+ |
* @return the result of accumulating the given transformation |
4015 |
+ |
* of all values |
4016 |
+ |
*/ |
4017 |
+ |
public int reduceValuesToInt(ObjectToInt<? super V> transformer, |
4018 |
+ |
int basis, |
4019 |
+ |
IntByIntToInt reducer) { |
4020 |
+ |
return fjp.invoke(ForkJoinTasks.reduceValuesToInt |
4021 |
+ |
(ConcurrentHashMapV8.this, transformer, basis, reducer)); |
4022 |
+ |
} |
4023 |
+ |
|
4024 |
+ |
/** |
4025 |
+ |
* Performs the given action for each entry. |
4026 |
+ |
* |
4027 |
+ |
* @param action the action |
4028 |
+ |
*/ |
4029 |
+ |
public void forEachEntry(Action<Map.Entry<K,V>> action) { |
4030 |
+ |
fjp.invoke(ForkJoinTasks.forEachEntry |
4031 |
+ |
(ConcurrentHashMapV8.this, action)); |
4032 |
+ |
} |
4033 |
+ |
|
4034 |
+ |
/** |
4035 |
+ |
* Performs the given action for each non-null transformation |
4036 |
+ |
* of each entry. |
4037 |
+ |
* |
4038 |
+ |
* @param transformer a function returning the transformation |
4039 |
+ |
* for an element, or null of there is no transformation (in |
4040 |
+ |
* which case the action is not applied). |
4041 |
+ |
* @param action the action |
4042 |
+ |
*/ |
4043 |
+ |
public <U> void forEachEntry(Fun<Map.Entry<K,V>, ? extends U> transformer, |
4044 |
+ |
Action<U> action) { |
4045 |
+ |
fjp.invoke(ForkJoinTasks.forEachEntry |
4046 |
+ |
(ConcurrentHashMapV8.this, transformer, action)); |
4047 |
+ |
} |
4048 |
+ |
|
4049 |
+ |
/** |
4050 |
+ |
* Returns a non-null result from applying the given search |
4051 |
+ |
* function on each entry, or null if none. Upon success, |
4052 |
+ |
* further element processing is suppressed and the results of |
4053 |
+ |
* any other parallel invocations of the search function are |
4054 |
+ |
* ignored. |
4055 |
+ |
* |
4056 |
+ |
* @param searchFunction a function returning a non-null |
4057 |
+ |
* result on success, else null |
4058 |
+ |
* @return a non-null result from applying the given search |
4059 |
+ |
* function on each entry, or null if none |
4060 |
+ |
*/ |
4061 |
+ |
public <U> U searchEntries(Fun<Map.Entry<K,V>, ? extends U> searchFunction) { |
4062 |
+ |
return fjp.invoke(ForkJoinTasks.searchEntries |
4063 |
+ |
(ConcurrentHashMapV8.this, searchFunction)); |
4064 |
+ |
} |
4065 |
+ |
|
4066 |
+ |
/** |
4067 |
+ |
* Returns the result of accumulating all entries using the |
4068 |
+ |
* given reducer to combine values, or null if none. |
4069 |
+ |
* |
4070 |
+ |
* @param reducer a commutative associative combining function |
4071 |
+ |
* @return the result of accumulating all entries |
4072 |
+ |
*/ |
4073 |
+ |
public Map.Entry<K,V> reduceEntries(BiFun<Map.Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer) { |
4074 |
+ |
return fjp.invoke(ForkJoinTasks.reduceEntries |
4075 |
+ |
(ConcurrentHashMapV8.this, reducer)); |
4076 |
+ |
} |
4077 |
+ |
|
4078 |
+ |
/** |
4079 |
+ |
* Returns the result of accumulating the given transformation |
4080 |
+ |
* of all entries using the given reducer to combine values, |
4081 |
+ |
* or null if none. |
4082 |
+ |
* |
4083 |
+ |
* @param transformer a function returning the transformation |
4084 |
+ |
* for an element, or null of there is no transformation (in |
4085 |
+ |
* which case it is not combined). |
4086 |
+ |
* @param reducer a commutative associative combining function |
4087 |
+ |
* @return the result of accumulating the given transformation |
4088 |
+ |
* of all entries |
4089 |
+ |
*/ |
4090 |
+ |
public <U> U reduceEntries(Fun<Map.Entry<K,V>, ? extends U> transformer, |
4091 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
4092 |
+ |
return fjp.invoke(ForkJoinTasks.reduceEntries |
4093 |
+ |
(ConcurrentHashMapV8.this, transformer, reducer)); |
4094 |
+ |
} |
4095 |
+ |
|
4096 |
+ |
/** |
4097 |
+ |
* Returns the result of accumulating the given transformation |
4098 |
+ |
* of all entries using the given reducer to combine values, |
4099 |
+ |
* and the given basis as an identity value. |
4100 |
+ |
* |
4101 |
+ |
* @param transformer a function returning the transformation |
4102 |
+ |
* for an element |
4103 |
+ |
* @param basis the identity (initial default value) for the reduction |
4104 |
+ |
* @param reducer a commutative associative combining function |
4105 |
+ |
* @return the result of accumulating the given transformation |
4106 |
+ |
* of all entries |
4107 |
+ |
*/ |
4108 |
+ |
public double reduceEntriesToDouble(ObjectToDouble<Map.Entry<K,V>> transformer, |
4109 |
+ |
double basis, |
4110 |
+ |
DoubleByDoubleToDouble reducer) { |
4111 |
+ |
return fjp.invoke(ForkJoinTasks.reduceEntriesToDouble |
4112 |
+ |
(ConcurrentHashMapV8.this, transformer, basis, reducer)); |
4113 |
+ |
} |
4114 |
+ |
|
4115 |
+ |
/** |
4116 |
+ |
* Returns the result of accumulating the given transformation |
4117 |
+ |
* of all entries using the given reducer to combine values, |
4118 |
+ |
* and the given basis as an identity value. |
4119 |
+ |
* |
4120 |
+ |
* @param transformer a function returning the transformation |
4121 |
+ |
* for an element |
4122 |
+ |
* @param basis the identity (initial default value) for the reduction |
4123 |
+ |
* @param reducer a commutative associative combining function |
4124 |
+ |
* @return the result of accumulating the given transformation |
4125 |
+ |
* of all entries |
4126 |
+ |
*/ |
4127 |
+ |
public long reduceEntriesToLong(ObjectToLong<Map.Entry<K,V>> transformer, |
4128 |
+ |
long basis, |
4129 |
+ |
LongByLongToLong reducer) { |
4130 |
+ |
return fjp.invoke(ForkJoinTasks.reduceEntriesToLong |
4131 |
+ |
(ConcurrentHashMapV8.this, transformer, basis, reducer)); |
4132 |
+ |
} |
4133 |
+ |
|
4134 |
+ |
/** |
4135 |
+ |
* Returns the result of accumulating the given transformation |
4136 |
+ |
* of all entries using the given reducer to combine values, |
4137 |
+ |
* and the given basis as an identity value. |
4138 |
+ |
* |
4139 |
+ |
* @param transformer a function returning the transformation |
4140 |
+ |
* for an element |
4141 |
+ |
* @param basis the identity (initial default value) for the reduction |
4142 |
+ |
* @param reducer a commutative associative combining function |
4143 |
+ |
* @return the result of accumulating the given transformation |
4144 |
+ |
* of all entries |
4145 |
+ |
*/ |
4146 |
+ |
public int reduceEntriesToInt(ObjectToInt<Map.Entry<K,V>> transformer, |
4147 |
+ |
int basis, |
4148 |
+ |
IntByIntToInt reducer) { |
4149 |
+ |
return fjp.invoke(ForkJoinTasks.reduceEntriesToInt |
4150 |
+ |
(ConcurrentHashMapV8.this, transformer, basis, reducer)); |
4151 |
+ |
} |
4152 |
+ |
} |
4153 |
+ |
|
4154 |
+ |
// --------------------------------------------------------------------- |
4155 |
+ |
|
4156 |
+ |
/** |
4157 |
+ |
* Predefined tasks for performing bulk parallel operations on |
4158 |
+ |
* ConcurrentHashMaps. These tasks follow the forms and rules used |
4159 |
+ |
* in class {@link Parallel}. Each method has the same name, but |
4160 |
+ |
* returns a task rather than invoking it. These methods may be |
4161 |
+ |
* useful in custom applications such as submitting a task without |
4162 |
+ |
* waiting for completion, or combining with other tasks. |
4163 |
+ |
*/ |
4164 |
+ |
public static class ForkJoinTasks { |
4165 |
+ |
private ForkJoinTasks() {} |
4166 |
+ |
|
4167 |
+ |
/** |
4168 |
+ |
* Returns a task that when invoked, performs the given |
4169 |
+ |
* action for each (key, value) |
4170 |
+ |
* |
4171 |
+ |
* @param map the map |
4172 |
+ |
* @param action the action |
4173 |
+ |
* @return the task |
4174 |
+ |
*/ |
4175 |
+ |
public static <K,V> ForkJoinTask<Void> forEach |
4176 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4177 |
+ |
BiAction<K,V> action) { |
4178 |
+ |
if (action == null) throw new NullPointerException(); |
4179 |
+ |
return new ForEachMappingTask<K,V>(map, action); |
4180 |
+ |
} |
4181 |
+ |
|
4182 |
+ |
/** |
4183 |
+ |
* Returns a task that when invoked, performs the given |
4184 |
+ |
* action for each non-null transformation of each (key, value) |
4185 |
+ |
* |
4186 |
+ |
* @param map the map |
4187 |
+ |
* @param transformer a function returning the transformation |
4188 |
+ |
* for an element, or null of there is no transformation (in |
4189 |
+ |
* which case the action is not applied). |
4190 |
+ |
* @param action the action |
4191 |
+ |
* @return the task |
4192 |
+ |
*/ |
4193 |
+ |
public static <K,V,U> ForkJoinTask<Void> forEach |
4194 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4195 |
+ |
BiFun<? super K, ? super V, ? extends U> transformer, |
4196 |
+ |
Action<U> action) { |
4197 |
+ |
if (transformer == null || action == null) |
4198 |
+ |
throw new NullPointerException(); |
4199 |
+ |
return new ForEachTransformedMappingTask<K,V,U> |
4200 |
+ |
(map, transformer, action); |
4201 |
+ |
} |
4202 |
+ |
|
4203 |
+ |
/** |
4204 |
+ |
* Returns a task that when invoked, returns a non-null result |
4205 |
+ |
* from applying the given search function on each (key, |
4206 |
+ |
* value), or null if none. Upon success, further element |
4207 |
+ |
* processing is suppressed and the results of any other |
4208 |
+ |
* parallel invocations of the search function are ignored. |
4209 |
+ |
* |
4210 |
+ |
* @param map the map |
4211 |
+ |
* @param searchFunction a function returning a non-null |
4212 |
+ |
* result on success, else null |
4213 |
+ |
* @return the task |
4214 |
+ |
*/ |
4215 |
+ |
public static <K,V,U> ForkJoinTask<U> search |
4216 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4217 |
+ |
BiFun<? super K, ? super V, ? extends U> searchFunction) { |
4218 |
+ |
if (searchFunction == null) throw new NullPointerException(); |
4219 |
+ |
return new SearchMappingsTask<K,V,U> |
4220 |
+ |
(map, searchFunction, |
4221 |
+ |
new AtomicReference<U>()); |
4222 |
+ |
} |
4223 |
+ |
|
4224 |
+ |
/** |
4225 |
+ |
* Returns a task that when invoked, returns the result of |
4226 |
+ |
* accumulating the given transformation of all (key, value) pairs |
4227 |
+ |
* using the given reducer to combine values, or null if none. |
4228 |
+ |
* |
4229 |
+ |
* @param map the map |
4230 |
+ |
* @param transformer a function returning the transformation |
4231 |
+ |
* for an element, or null of there is no transformation (in |
4232 |
+ |
* which case it is not combined). |
4233 |
+ |
* @param reducer a commutative associative combining function |
4234 |
+ |
* @return the task |
4235 |
+ |
*/ |
4236 |
+ |
public static <K,V,U> ForkJoinTask<U> reduce |
4237 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4238 |
+ |
BiFun<? super K, ? super V, ? extends U> transformer, |
4239 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
4240 |
+ |
if (transformer == null || reducer == null) |
4241 |
+ |
throw new NullPointerException(); |
4242 |
+ |
return new MapReduceMappingsTask<K,V,U> |
4243 |
+ |
(map, transformer, reducer); |
4244 |
+ |
} |
4245 |
+ |
|
4246 |
+ |
/** |
4247 |
+ |
* Returns a task that when invoked, returns the result of |
4248 |
+ |
* accumulating the given transformation of all (key, value) pairs |
4249 |
+ |
* using the given reducer to combine values, and the given |
4250 |
+ |
* basis as an identity value. |
4251 |
+ |
* |
4252 |
+ |
* @param map the map |
4253 |
+ |
* @param transformer a function returning the transformation |
4254 |
+ |
* for an element |
4255 |
+ |
* @param basis the identity (initial default value) for the reduction |
4256 |
+ |
* @param reducer a commutative associative combining function |
4257 |
+ |
* @return the task |
4258 |
+ |
*/ |
4259 |
+ |
public static <K,V> ForkJoinTask<Double> reduceToDouble |
4260 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4261 |
+ |
ObjectByObjectToDouble<? super K, ? super V> transformer, |
4262 |
+ |
double basis, |
4263 |
+ |
DoubleByDoubleToDouble reducer) { |
4264 |
+ |
if (transformer == null || reducer == null) |
4265 |
+ |
throw new NullPointerException(); |
4266 |
+ |
return new MapReduceMappingsToDoubleTask<K,V> |
4267 |
+ |
(map, transformer, basis, reducer); |
4268 |
+ |
} |
4269 |
+ |
|
4270 |
+ |
/** |
4271 |
+ |
* Returns a task that when invoked, returns the result of |
4272 |
+ |
* accumulating the given transformation of all (key, value) pairs |
4273 |
+ |
* using the given reducer to combine values, and the given |
4274 |
+ |
* basis as an identity value. |
4275 |
+ |
* |
4276 |
+ |
* @param map the map |
4277 |
+ |
* @param transformer a function returning the transformation |
4278 |
+ |
* for an element |
4279 |
+ |
* @param basis the identity (initial default value) for the reduction |
4280 |
+ |
* @param reducer a commutative associative combining function |
4281 |
+ |
* @return the task |
4282 |
+ |
*/ |
4283 |
+ |
public static <K,V> ForkJoinTask<Long> reduceToLong |
4284 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4285 |
+ |
ObjectByObjectToLong<? super K, ? super V> transformer, |
4286 |
+ |
long basis, |
4287 |
+ |
LongByLongToLong reducer) { |
4288 |
+ |
if (transformer == null || reducer == null) |
4289 |
+ |
throw new NullPointerException(); |
4290 |
+ |
return new MapReduceMappingsToLongTask<K,V> |
4291 |
+ |
(map, transformer, basis, reducer); |
4292 |
+ |
} |
4293 |
+ |
|
4294 |
+ |
/** |
4295 |
+ |
* Returns a task that when invoked, returns the result of |
4296 |
+ |
* accumulating the given transformation of all (key, value) pairs |
4297 |
+ |
* using the given reducer to combine values, and the given |
4298 |
+ |
* basis as an identity value. |
4299 |
+ |
* |
4300 |
+ |
* @param transformer a function returning the transformation |
4301 |
+ |
* for an element |
4302 |
+ |
* @param basis the identity (initial default value) for the reduction |
4303 |
+ |
* @param reducer a commutative associative combining function |
4304 |
+ |
* @return the task |
4305 |
+ |
*/ |
4306 |
+ |
public static <K,V> ForkJoinTask<Integer> reduceToInt |
4307 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4308 |
+ |
ObjectByObjectToInt<? super K, ? super V> transformer, |
4309 |
+ |
int basis, |
4310 |
+ |
IntByIntToInt reducer) { |
4311 |
+ |
if (transformer == null || reducer == null) |
4312 |
+ |
throw new NullPointerException(); |
4313 |
+ |
return new MapReduceMappingsToIntTask<K,V> |
4314 |
+ |
(map, transformer, basis, reducer); |
4315 |
+ |
} |
4316 |
+ |
|
4317 |
+ |
/** |
4318 |
+ |
* Returns a task that when invoked, performs the given action |
4319 |
+ |
* for each key. |
4320 |
+ |
* |
4321 |
+ |
* @param map the map |
4322 |
+ |
* @param action the action |
4323 |
+ |
* @return the task |
4324 |
+ |
*/ |
4325 |
+ |
public static <K,V> ForkJoinTask<Void> forEachKey |
4326 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4327 |
+ |
Action<K> action) { |
4328 |
+ |
if (action == null) throw new NullPointerException(); |
4329 |
+ |
return new ForEachKeyTask<K,V>(map, action); |
4330 |
+ |
} |
4331 |
+ |
|
4332 |
+ |
/** |
4333 |
+ |
* Returns a task that when invoked, performs the given action |
4334 |
+ |
* for each non-null transformation of each key. |
4335 |
+ |
* |
4336 |
+ |
* @param map the map |
4337 |
+ |
* @param transformer a function returning the transformation |
4338 |
+ |
* for an element, or null of there is no transformation (in |
4339 |
+ |
* which case the action is not applied). |
4340 |
+ |
* @param action the action |
4341 |
+ |
* @return the task |
4342 |
+ |
*/ |
4343 |
+ |
public static <K,V,U> ForkJoinTask<Void> forEachKey |
4344 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4345 |
+ |
Fun<? super K, ? extends U> transformer, |
4346 |
+ |
Action<U> action) { |
4347 |
+ |
if (transformer == null || action == null) |
4348 |
+ |
throw new NullPointerException(); |
4349 |
+ |
return new ForEachTransformedKeyTask<K,V,U> |
4350 |
+ |
(map, transformer, action); |
4351 |
+ |
} |
4352 |
+ |
|
4353 |
+ |
/** |
4354 |
+ |
* Returns a task that when invoked, returns a non-null result |
4355 |
+ |
* from applying the given search function on each key, or |
4356 |
+ |
* null if none. Upon success, further element processing is |
4357 |
+ |
* suppressed and the results of any other parallel |
4358 |
+ |
* invocations of the search function are ignored. |
4359 |
+ |
* |
4360 |
+ |
* @param map the map |
4361 |
+ |
* @param searchFunction a function returning a non-null |
4362 |
+ |
* result on success, else null |
4363 |
+ |
* @return the task |
4364 |
+ |
*/ |
4365 |
+ |
public static <K,V,U> ForkJoinTask<U> searchKeys |
4366 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4367 |
+ |
Fun<? super K, ? extends U> searchFunction) { |
4368 |
+ |
if (searchFunction == null) throw new NullPointerException(); |
4369 |
+ |
return new SearchKeysTask<K,V,U> |
4370 |
+ |
(map, searchFunction, |
4371 |
+ |
new AtomicReference<U>()); |
4372 |
+ |
} |
4373 |
+ |
|
4374 |
+ |
/** |
4375 |
+ |
* Returns a task that when invoked, returns the result of |
4376 |
+ |
* accumulating all keys using the given reducer to combine |
4377 |
+ |
* values, or null if none. |
4378 |
+ |
* |
4379 |
+ |
* @param map the map |
4380 |
+ |
* @param reducer a commutative associative combining function |
4381 |
+ |
* @return the task |
4382 |
+ |
*/ |
4383 |
+ |
public static <K,V> ForkJoinTask<K> reduceKeys |
4384 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4385 |
+ |
BiFun<? super K, ? super K, ? extends K> reducer) { |
4386 |
+ |
if (reducer == null) throw new NullPointerException(); |
4387 |
+ |
return new ReduceKeysTask<K,V> |
4388 |
+ |
(map, reducer); |
4389 |
+ |
} |
4390 |
+ |
|
4391 |
+ |
/** |
4392 |
+ |
* Returns a task that when invoked, returns the result of |
4393 |
+ |
* accumulating the given transformation of all keys using the given |
4394 |
+ |
* reducer to combine values, or null if none. |
4395 |
+ |
* |
4396 |
+ |
* @param map the map |
4397 |
+ |
* @param transformer a function returning the transformation |
4398 |
+ |
* for an element, or null of there is no transformation (in |
4399 |
+ |
* which case it is not combined). |
4400 |
+ |
* @param reducer a commutative associative combining function |
4401 |
+ |
* @return the task |
4402 |
+ |
*/ |
4403 |
+ |
public static <K,V,U> ForkJoinTask<U> reduceKeys |
4404 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4405 |
+ |
Fun<? super K, ? extends U> transformer, |
4406 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
4407 |
+ |
if (transformer == null || reducer == null) |
4408 |
+ |
throw new NullPointerException(); |
4409 |
+ |
return new MapReduceKeysTask<K,V,U> |
4410 |
+ |
(map, transformer, reducer); |
4411 |
+ |
} |
4412 |
+ |
|
4413 |
+ |
/** |
4414 |
+ |
* Returns a task that when invoked, returns the result of |
4415 |
+ |
* accumulating the given transformation of all keys using the given |
4416 |
+ |
* reducer to combine values, and the given basis as an |
4417 |
+ |
* identity value. |
4418 |
+ |
* |
4419 |
+ |
* @param map the map |
4420 |
+ |
* @param transformer a function returning the transformation |
4421 |
+ |
* for an element |
4422 |
+ |
* @param basis the identity (initial default value) for the reduction |
4423 |
+ |
* @param reducer a commutative associative combining function |
4424 |
+ |
* @return the task |
4425 |
+ |
*/ |
4426 |
+ |
public static <K,V> ForkJoinTask<Double> reduceKeysToDouble |
4427 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4428 |
+ |
ObjectToDouble<? super K> transformer, |
4429 |
+ |
double basis, |
4430 |
+ |
DoubleByDoubleToDouble reducer) { |
4431 |
+ |
if (transformer == null || reducer == null) |
4432 |
+ |
throw new NullPointerException(); |
4433 |
+ |
return new MapReduceKeysToDoubleTask<K,V> |
4434 |
+ |
(map, transformer, basis, reducer); |
4435 |
+ |
} |
4436 |
+ |
|
4437 |
+ |
/** |
4438 |
+ |
* Returns a task that when invoked, returns the result of |
4439 |
+ |
* accumulating the given transformation of all keys using the given |
4440 |
+ |
* reducer to combine values, and the given basis as an |
4441 |
+ |
* identity value. |
4442 |
+ |
* |
4443 |
+ |
* @param map the map |
4444 |
+ |
* @param transformer a function returning the transformation |
4445 |
+ |
* for an element |
4446 |
+ |
* @param basis the identity (initial default value) for the reduction |
4447 |
+ |
* @param reducer a commutative associative combining function |
4448 |
+ |
* @return the task |
4449 |
+ |
*/ |
4450 |
+ |
public static <K,V> ForkJoinTask<Long> reduceKeysToLong |
4451 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4452 |
+ |
ObjectToLong<? super K> transformer, |
4453 |
+ |
long basis, |
4454 |
+ |
LongByLongToLong reducer) { |
4455 |
+ |
if (transformer == null || reducer == null) |
4456 |
+ |
throw new NullPointerException(); |
4457 |
+ |
return new MapReduceKeysToLongTask<K,V> |
4458 |
+ |
(map, transformer, basis, reducer); |
4459 |
+ |
} |
4460 |
+ |
|
4461 |
+ |
/** |
4462 |
+ |
* Returns a task that when invoked, returns the result of |
4463 |
+ |
* accumulating the given transformation of all keys using the given |
4464 |
+ |
* reducer to combine values, and the given basis as an |
4465 |
+ |
* identity value. |
4466 |
+ |
* |
4467 |
+ |
* @param map the map |
4468 |
+ |
* @param transformer a function returning the transformation |
4469 |
+ |
* for an element |
4470 |
+ |
* @param basis the identity (initial default value) for the reduction |
4471 |
+ |
* @param reducer a commutative associative combining function |
4472 |
+ |
* @return the task |
4473 |
+ |
*/ |
4474 |
+ |
public static <K,V> ForkJoinTask<Integer> reduceKeysToInt |
4475 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4476 |
+ |
ObjectToInt<? super K> transformer, |
4477 |
+ |
int basis, |
4478 |
+ |
IntByIntToInt reducer) { |
4479 |
+ |
if (transformer == null || reducer == null) |
4480 |
+ |
throw new NullPointerException(); |
4481 |
+ |
return new MapReduceKeysToIntTask<K,V> |
4482 |
+ |
(map, transformer, basis, reducer); |
4483 |
+ |
} |
4484 |
+ |
|
4485 |
+ |
/** |
4486 |
+ |
* Returns a task that when invoked, performs the given action |
4487 |
+ |
* for each value. |
4488 |
+ |
* |
4489 |
+ |
* @param map the map |
4490 |
+ |
* @param action the action |
4491 |
+ |
*/ |
4492 |
+ |
public static <K,V> ForkJoinTask<Void> forEachValue |
4493 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4494 |
+ |
Action<V> action) { |
4495 |
+ |
if (action == null) throw new NullPointerException(); |
4496 |
+ |
return new ForEachValueTask<K,V>(map, action); |
4497 |
+ |
} |
4498 |
+ |
|
4499 |
+ |
/** |
4500 |
+ |
* Returns a task that when invoked, performs the given action |
4501 |
+ |
* for each non-null transformation of each value. |
4502 |
+ |
* |
4503 |
+ |
* @param map the map |
4504 |
+ |
* @param transformer a function returning the transformation |
4505 |
+ |
* for an element, or null of there is no transformation (in |
4506 |
+ |
* which case the action is not applied). |
4507 |
+ |
* @param action the action |
4508 |
+ |
*/ |
4509 |
+ |
public static <K,V,U> ForkJoinTask<Void> forEachValue |
4510 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4511 |
+ |
Fun<? super V, ? extends U> transformer, |
4512 |
+ |
Action<U> action) { |
4513 |
+ |
if (transformer == null || action == null) |
4514 |
+ |
throw new NullPointerException(); |
4515 |
+ |
return new ForEachTransformedValueTask<K,V,U> |
4516 |
+ |
(map, transformer, action); |
4517 |
+ |
} |
4518 |
+ |
|
4519 |
+ |
/** |
4520 |
+ |
* Returns a task that when invoked, returns a non-null result |
4521 |
+ |
* from applying the given search function on each value, or |
4522 |
+ |
* null if none. Upon success, further element processing is |
4523 |
+ |
* suppressed and the results of any other parallel |
4524 |
+ |
* invocations of the search function are ignored. |
4525 |
+ |
* |
4526 |
+ |
* @param map the map |
4527 |
+ |
* @param searchFunction a function returning a non-null |
4528 |
+ |
* result on success, else null |
4529 |
+ |
* @return the task |
4530 |
+ |
* |
4531 |
+ |
*/ |
4532 |
+ |
public static <K,V,U> ForkJoinTask<U> searchValues |
4533 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4534 |
+ |
Fun<? super V, ? extends U> searchFunction) { |
4535 |
+ |
if (searchFunction == null) throw new NullPointerException(); |
4536 |
+ |
return new SearchValuesTask<K,V,U> |
4537 |
+ |
(map, searchFunction, |
4538 |
+ |
new AtomicReference<U>()); |
4539 |
+ |
} |
4540 |
+ |
|
4541 |
+ |
/** |
4542 |
+ |
* Returns a task that when invoked, returns the result of |
4543 |
+ |
* accumulating all values using the given reducer to combine |
4544 |
+ |
* values, or null if none. |
4545 |
+ |
* |
4546 |
+ |
* @param map the map |
4547 |
+ |
* @param reducer a commutative associative combining function |
4548 |
+ |
* @return the task |
4549 |
+ |
*/ |
4550 |
+ |
public static <K,V> ForkJoinTask<V> reduceValues |
4551 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4552 |
+ |
BiFun<? super V, ? super V, ? extends V> reducer) { |
4553 |
+ |
if (reducer == null) throw new NullPointerException(); |
4554 |
+ |
return new ReduceValuesTask<K,V> |
4555 |
+ |
(map, reducer); |
4556 |
+ |
} |
4557 |
+ |
|
4558 |
+ |
/** |
4559 |
+ |
* Returns a task that when invoked, returns the result of |
4560 |
+ |
* accumulating the given transformation of all values using the |
4561 |
+ |
* given reducer to combine values, or null if none. |
4562 |
+ |
* |
4563 |
+ |
* @param map the map |
4564 |
+ |
* @param transformer a function returning the transformation |
4565 |
+ |
* for an element, or null of there is no transformation (in |
4566 |
+ |
* which case it is not combined). |
4567 |
+ |
* @param reducer a commutative associative combining function |
4568 |
+ |
* @return the task |
4569 |
+ |
*/ |
4570 |
+ |
public static <K,V,U> ForkJoinTask<U> reduceValues |
4571 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4572 |
+ |
Fun<? super V, ? extends U> transformer, |
4573 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
4574 |
+ |
if (transformer == null || reducer == null) |
4575 |
+ |
throw new NullPointerException(); |
4576 |
+ |
return new MapReduceValuesTask<K,V,U> |
4577 |
+ |
(map, transformer, reducer); |
4578 |
+ |
} |
4579 |
+ |
|
4580 |
+ |
/** |
4581 |
+ |
* Returns a task that when invoked, returns the result of |
4582 |
+ |
* accumulating the given transformation of all values using the |
4583 |
+ |
* given reducer to combine values, and the given basis as an |
4584 |
+ |
* identity value. |
4585 |
+ |
* |
4586 |
+ |
* @param map the map |
4587 |
+ |
* @param transformer a function returning the transformation |
4588 |
+ |
* for an element |
4589 |
+ |
* @param basis the identity (initial default value) for the reduction |
4590 |
+ |
* @param reducer a commutative associative combining function |
4591 |
+ |
* @return the task |
4592 |
+ |
*/ |
4593 |
+ |
public static <K,V> ForkJoinTask<Double> reduceValuesToDouble |
4594 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4595 |
+ |
ObjectToDouble<? super V> transformer, |
4596 |
+ |
double basis, |
4597 |
+ |
DoubleByDoubleToDouble reducer) { |
4598 |
+ |
if (transformer == null || reducer == null) |
4599 |
+ |
throw new NullPointerException(); |
4600 |
+ |
return new MapReduceValuesToDoubleTask<K,V> |
4601 |
+ |
(map, transformer, basis, reducer); |
4602 |
+ |
} |
4603 |
+ |
|
4604 |
+ |
/** |
4605 |
+ |
* Returns a task that when invoked, returns the result of |
4606 |
+ |
* accumulating the given transformation of all values using the |
4607 |
+ |
* given reducer to combine values, and the given basis as an |
4608 |
+ |
* identity value. |
4609 |
+ |
* |
4610 |
+ |
* @param map the map |
4611 |
+ |
* @param transformer a function returning the transformation |
4612 |
+ |
* for an element |
4613 |
+ |
* @param basis the identity (initial default value) for the reduction |
4614 |
+ |
* @param reducer a commutative associative combining function |
4615 |
+ |
* @return the task |
4616 |
+ |
*/ |
4617 |
+ |
public static <K,V> ForkJoinTask<Long> reduceValuesToLong |
4618 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4619 |
+ |
ObjectToLong<? super V> transformer, |
4620 |
+ |
long basis, |
4621 |
+ |
LongByLongToLong reducer) { |
4622 |
+ |
if (transformer == null || reducer == null) |
4623 |
+ |
throw new NullPointerException(); |
4624 |
+ |
return new MapReduceValuesToLongTask<K,V> |
4625 |
+ |
(map, transformer, basis, reducer); |
4626 |
+ |
} |
4627 |
+ |
|
4628 |
+ |
/** |
4629 |
+ |
* Returns a task that when invoked, returns the result of |
4630 |
+ |
* accumulating the given transformation of all values using the |
4631 |
+ |
* given reducer to combine values, and the given basis as an |
4632 |
+ |
* identity value. |
4633 |
+ |
* |
4634 |
+ |
* @param map the map |
4635 |
+ |
* @param transformer a function returning the transformation |
4636 |
+ |
* for an element |
4637 |
+ |
* @param basis the identity (initial default value) for the reduction |
4638 |
+ |
* @param reducer a commutative associative combining function |
4639 |
+ |
* @return the task |
4640 |
+ |
*/ |
4641 |
+ |
public static <K,V> ForkJoinTask<Integer> reduceValuesToInt |
4642 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4643 |
+ |
ObjectToInt<? super V> transformer, |
4644 |
+ |
int basis, |
4645 |
+ |
IntByIntToInt reducer) { |
4646 |
+ |
if (transformer == null || reducer == null) |
4647 |
+ |
throw new NullPointerException(); |
4648 |
+ |
return new MapReduceValuesToIntTask<K,V> |
4649 |
+ |
(map, transformer, basis, reducer); |
4650 |
+ |
} |
4651 |
+ |
|
4652 |
+ |
/** |
4653 |
+ |
* Returns a task that when invoked, perform the given action |
4654 |
+ |
* for each entry. |
4655 |
+ |
* |
4656 |
+ |
* @param map the map |
4657 |
+ |
* @param action the action |
4658 |
+ |
*/ |
4659 |
+ |
public static <K,V> ForkJoinTask<Void> forEachEntry |
4660 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4661 |
+ |
Action<Map.Entry<K,V>> action) { |
4662 |
+ |
if (action == null) throw new NullPointerException(); |
4663 |
+ |
return new ForEachEntryTask<K,V>(map, action); |
4664 |
+ |
} |
4665 |
+ |
|
4666 |
+ |
/** |
4667 |
+ |
* Returns a task that when invoked, perform the given action |
4668 |
+ |
* for each non-null transformation of each entry. |
4669 |
+ |
* |
4670 |
+ |
* @param map the map |
4671 |
+ |
* @param transformer a function returning the transformation |
4672 |
+ |
* for an element, or null of there is no transformation (in |
4673 |
+ |
* which case the action is not applied). |
4674 |
+ |
* @param action the action |
4675 |
+ |
*/ |
4676 |
+ |
public static <K,V,U> ForkJoinTask<Void> forEachEntry |
4677 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4678 |
+ |
Fun<Map.Entry<K,V>, ? extends U> transformer, |
4679 |
+ |
Action<U> action) { |
4680 |
+ |
if (transformer == null || action == null) |
4681 |
+ |
throw new NullPointerException(); |
4682 |
+ |
return new ForEachTransformedEntryTask<K,V,U> |
4683 |
+ |
(map, transformer, action); |
4684 |
+ |
} |
4685 |
+ |
|
4686 |
+ |
/** |
4687 |
+ |
* Returns a task that when invoked, returns a non-null result |
4688 |
+ |
* from applying the given search function on each entry, or |
4689 |
+ |
* null if none. Upon success, further element processing is |
4690 |
+ |
* suppressed and the results of any other parallel |
4691 |
+ |
* invocations of the search function are ignored. |
4692 |
+ |
* |
4693 |
+ |
* @param map the map |
4694 |
+ |
* @param searchFunction a function returning a non-null |
4695 |
+ |
* result on success, else null |
4696 |
+ |
* @return the task |
4697 |
+ |
* |
4698 |
+ |
*/ |
4699 |
+ |
public static <K,V,U> ForkJoinTask<U> searchEntries |
4700 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4701 |
+ |
Fun<Map.Entry<K,V>, ? extends U> searchFunction) { |
4702 |
+ |
if (searchFunction == null) throw new NullPointerException(); |
4703 |
+ |
return new SearchEntriesTask<K,V,U> |
4704 |
+ |
(map, searchFunction, |
4705 |
+ |
new AtomicReference<U>()); |
4706 |
+ |
} |
4707 |
+ |
|
4708 |
+ |
/** |
4709 |
+ |
* Returns a task that when invoked, returns the result of |
4710 |
+ |
* accumulating all entries using the given reducer to combine |
4711 |
+ |
* values, or null if none. |
4712 |
+ |
* |
4713 |
+ |
* @param map the map |
4714 |
+ |
* @param reducer a commutative associative combining function |
4715 |
+ |
* @return the task |
4716 |
+ |
*/ |
4717 |
+ |
public static <K,V> ForkJoinTask<Map.Entry<K,V>> reduceEntries |
4718 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4719 |
+ |
BiFun<Map.Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer) { |
4720 |
+ |
if (reducer == null) throw new NullPointerException(); |
4721 |
+ |
return new ReduceEntriesTask<K,V> |
4722 |
+ |
(map, reducer); |
4723 |
+ |
} |
4724 |
+ |
|
4725 |
+ |
/** |
4726 |
+ |
* Returns a task that when invoked, returns the result of |
4727 |
+ |
* accumulating the given transformation of all entries using the |
4728 |
+ |
* given reducer to combine values, or null if none. |
4729 |
+ |
* |
4730 |
+ |
* @param map the map |
4731 |
+ |
* @param transformer a function returning the transformation |
4732 |
+ |
* for an element, or null of there is no transformation (in |
4733 |
+ |
* which case it is not combined). |
4734 |
+ |
* @param reducer a commutative associative combining function |
4735 |
+ |
* @return the task |
4736 |
+ |
*/ |
4737 |
+ |
public static <K,V,U> ForkJoinTask<U> reduceEntries |
4738 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4739 |
+ |
Fun<Map.Entry<K,V>, ? extends U> transformer, |
4740 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
4741 |
+ |
if (transformer == null || reducer == null) |
4742 |
+ |
throw new NullPointerException(); |
4743 |
+ |
return new MapReduceEntriesTask<K,V,U> |
4744 |
+ |
(map, transformer, reducer); |
4745 |
+ |
} |
4746 |
+ |
|
4747 |
+ |
/** |
4748 |
+ |
* Returns a task that when invoked, returns the result of |
4749 |
+ |
* accumulating the given transformation of all entries using the |
4750 |
+ |
* given reducer to combine values, and the given basis as an |
4751 |
+ |
* identity value. |
4752 |
+ |
* |
4753 |
+ |
* @param map the map |
4754 |
+ |
* @param transformer a function returning the transformation |
4755 |
+ |
* for an element |
4756 |
+ |
* @param basis the identity (initial default value) for the reduction |
4757 |
+ |
* @param reducer a commutative associative combining function |
4758 |
+ |
* @return the task |
4759 |
+ |
*/ |
4760 |
+ |
public static <K,V> ForkJoinTask<Double> reduceEntriesToDouble |
4761 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4762 |
+ |
ObjectToDouble<Map.Entry<K,V>> transformer, |
4763 |
+ |
double basis, |
4764 |
+ |
DoubleByDoubleToDouble reducer) { |
4765 |
+ |
if (transformer == null || reducer == null) |
4766 |
+ |
throw new NullPointerException(); |
4767 |
+ |
return new MapReduceEntriesToDoubleTask<K,V> |
4768 |
+ |
(map, transformer, basis, reducer); |
4769 |
+ |
} |
4770 |
+ |
|
4771 |
+ |
/** |
4772 |
+ |
* Returns a task that when invoked, returns the result of |
4773 |
+ |
* accumulating the given transformation of all entries using the |
4774 |
+ |
* given reducer to combine values, and the given basis as an |
4775 |
+ |
* identity value. |
4776 |
+ |
* |
4777 |
+ |
* @param map the map |
4778 |
+ |
* @param transformer a function returning the transformation |
4779 |
+ |
* for an element |
4780 |
+ |
* @param basis the identity (initial default value) for the reduction |
4781 |
+ |
* @param reducer a commutative associative combining function |
4782 |
+ |
* @return the task |
4783 |
+ |
*/ |
4784 |
+ |
public static <K,V> ForkJoinTask<Long> reduceEntriesToLong |
4785 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4786 |
+ |
ObjectToLong<Map.Entry<K,V>> transformer, |
4787 |
+ |
long basis, |
4788 |
+ |
LongByLongToLong reducer) { |
4789 |
+ |
if (transformer == null || reducer == null) |
4790 |
+ |
throw new NullPointerException(); |
4791 |
+ |
return new MapReduceEntriesToLongTask<K,V> |
4792 |
+ |
(map, transformer, basis, reducer); |
4793 |
+ |
} |
4794 |
+ |
|
4795 |
+ |
/** |
4796 |
+ |
* Returns a task that when invoked, returns the result of |
4797 |
+ |
* accumulating the given transformation of all entries using the |
4798 |
+ |
* given reducer to combine values, and the given basis as an |
4799 |
+ |
* identity value. |
4800 |
+ |
* |
4801 |
+ |
* @param map the map |
4802 |
+ |
* @param transformer a function returning the transformation |
4803 |
+ |
* for an element |
4804 |
+ |
* @param basis the identity (initial default value) for the reduction |
4805 |
+ |
* @param reducer a commutative associative combining function |
4806 |
+ |
* @return the task |
4807 |
+ |
*/ |
4808 |
+ |
public static <K,V> ForkJoinTask<Integer> reduceEntriesToInt |
4809 |
+ |
(ConcurrentHashMapV8<K,V> map, |
4810 |
+ |
ObjectToInt<Map.Entry<K,V>> transformer, |
4811 |
+ |
int basis, |
4812 |
+ |
IntByIntToInt reducer) { |
4813 |
+ |
if (transformer == null || reducer == null) |
4814 |
+ |
throw new NullPointerException(); |
4815 |
+ |
return new MapReduceEntriesToIntTask<K,V> |
4816 |
+ |
(map, transformer, basis, reducer); |
4817 |
+ |
} |
4818 |
+ |
} |
4819 |
+ |
|
4820 |
+ |
// ------------------------------------------------------- |
4821 |
+ |
|
4822 |
+ |
/** |
4823 |
+ |
* Base for FJ tasks for bulk operations. This adds a variant of |
4824 |
+ |
* CountedCompleters and some split and merge bookkeeping to |
4825 |
+ |
* iterator functionality. The forEach and reduce methods are |
4826 |
+ |
* similar to those illustrated in CountedCompleter documentation, |
4827 |
+ |
* except that bottom-up reduction completions perform them within |
4828 |
+ |
* their compute methods. The search methods are like forEach |
4829 |
+ |
* except they continually poll for success and exit early. Also, |
4830 |
+ |
* exceptions are handled in a simpler manner, by just trying to |
4831 |
+ |
* complete root task exceptionally. |
4832 |
+ |
*/ |
4833 |
+ |
@SuppressWarnings("serial") static abstract class BulkTask<K,V,R> extends Traverser<K,V,R> { |
4834 |
+ |
final BulkTask<K,V,?> parent; // completion target |
4835 |
+ |
int batch; // split control |
4836 |
+ |
int pending; // completion control |
4837 |
+ |
|
4838 |
+ |
/** Constructor for root tasks */ |
4839 |
+ |
BulkTask(ConcurrentHashMapV8<K,V> map) { |
4840 |
+ |
super(map); |
4841 |
+ |
this.parent = null; |
4842 |
+ |
this.batch = -1; // force call to batch() on execution |
4843 |
+ |
} |
4844 |
+ |
|
4845 |
+ |
/** Constructor for subtasks */ |
4846 |
+ |
BulkTask(BulkTask<K,V,?> parent, int batch) { |
4847 |
+ |
super(parent); |
4848 |
+ |
this.parent = parent; |
4849 |
+ |
this.batch = batch; |
4850 |
+ |
} |
4851 |
+ |
|
4852 |
+ |
// FJ methods |
4853 |
+ |
|
4854 |
+ |
/** |
4855 |
+ |
* Propagates completion. Note that all reduce actions |
4856 |
+ |
* bypass this method to combine while completing. |
4857 |
+ |
*/ |
4858 |
+ |
final void tryComplete() { |
4859 |
+ |
BulkTask<K,V,?> a = this, s = a; |
4860 |
+ |
for (int c;;) { |
4861 |
+ |
if ((c = a.pending) == 0) { |
4862 |
+ |
if ((a = (s = a).parent) == null) { |
4863 |
+ |
s.quietlyComplete(); |
4864 |
+ |
break; |
4865 |
+ |
} |
4866 |
+ |
} |
4867 |
+ |
else if (U.compareAndSwapInt(a, PENDING, c, c - 1)) |
4868 |
+ |
break; |
4869 |
+ |
} |
4870 |
+ |
} |
4871 |
+ |
|
4872 |
+ |
/** |
4873 |
+ |
* Forces root task to complete. |
4874 |
+ |
* @param ex if null, complete normally, else exceptionally |
4875 |
+ |
* @return false to simplify use |
4876 |
+ |
*/ |
4877 |
+ |
final boolean tryCompleteComputation(Throwable ex) { |
4878 |
+ |
for (BulkTask<K,V,?> a = this;;) { |
4879 |
+ |
BulkTask<K,V,?> p = a.parent; |
4880 |
+ |
if (p == null) { |
4881 |
+ |
if (ex != null) |
4882 |
+ |
a.completeExceptionally(ex); |
4883 |
+ |
else |
4884 |
+ |
a.quietlyComplete(); |
4885 |
+ |
return false; |
4886 |
+ |
} |
4887 |
+ |
a = p; |
4888 |
+ |
} |
4889 |
+ |
} |
4890 |
+ |
|
4891 |
+ |
/** |
4892 |
+ |
* Version of tryCompleteComputation for function screening checks |
4893 |
+ |
*/ |
4894 |
+ |
final boolean abortOnNullFunction() { |
4895 |
+ |
return tryCompleteComputation(new Error("Unexpected null function")); |
4896 |
+ |
} |
4897 |
+ |
|
4898 |
+ |
// utilities |
4899 |
+ |
|
4900 |
+ |
/** CompareAndSet pending count */ |
4901 |
+ |
final boolean casPending(int cmp, int val) { |
4902 |
+ |
return U.compareAndSwapInt(this, PENDING, cmp, val); |
4903 |
+ |
} |
4904 |
+ |
|
4905 |
+ |
/** |
4906 |
+ |
* Returns approx exp2 of the number of times (minus one) to |
4907 |
+ |
* split task by two before executing leaf action. This value |
4908 |
+ |
* is faster to compute and more convenient to use as a guide |
4909 |
+ |
* to splitting than is the depth, since it is used while |
4910 |
+ |
* dividing by two anyway. |
4911 |
+ |
*/ |
4912 |
+ |
final int batch() { |
4913 |
+ |
int b = batch; |
4914 |
+ |
if (b < 0) { |
4915 |
+ |
long n = map.counter.sum(); |
4916 |
+ |
int sp = getPool().getParallelism() << 3; // slack of 8 |
4917 |
+ |
b = batch = (n <= 0L) ? 0 : (n < (long)sp) ? (int)n : sp; |
4918 |
+ |
} |
4919 |
+ |
return b; |
4920 |
+ |
} |
4921 |
+ |
|
4922 |
+ |
/** |
4923 |
+ |
* Returns exportable snapshot entry. |
4924 |
+ |
*/ |
4925 |
+ |
static <K,V> AbstractMap.SimpleEntry<K,V> entryFor(K k, V v) { |
4926 |
+ |
return new AbstractMap.SimpleEntry<K,V>(k, v); |
4927 |
+ |
} |
4928 |
+ |
|
4929 |
+ |
// Unsafe mechanics |
4930 |
+ |
private static final sun.misc.Unsafe U; |
4931 |
+ |
private static final long PENDING; |
4932 |
+ |
static { |
4933 |
+ |
try { |
4934 |
+ |
U = getUnsafe(); |
4935 |
+ |
PENDING = U.objectFieldOffset |
4936 |
+ |
(BulkTask.class.getDeclaredField("pending")); |
4937 |
+ |
} catch (Exception e) { |
4938 |
+ |
throw new Error(e); |
4939 |
+ |
} |
4940 |
+ |
} |
4941 |
+ |
} |
4942 |
+ |
|
4943 |
+ |
/* |
4944 |
+ |
* Task classes. Coded in a regular but ugly format/style to |
4945 |
+ |
* simplify checks that each variant differs in the right way from |
4946 |
+ |
* others. |
4947 |
+ |
*/ |
4948 |
+ |
|
4949 |
+ |
@SuppressWarnings("serial") static final class ForEachKeyTask<K,V> |
4950 |
+ |
extends BulkTask<K,V,Void> { |
4951 |
+ |
final Action<K> action; |
4952 |
+ |
ForEachKeyTask |
4953 |
+ |
(ConcurrentHashMapV8<K,V> m, |
4954 |
+ |
Action<K> action) { |
4955 |
+ |
super(m); |
4956 |
+ |
this.action = action; |
4957 |
+ |
} |
4958 |
+ |
ForEachKeyTask |
4959 |
+ |
(BulkTask<K,V,?> p, int b, |
4960 |
+ |
Action<K> action) { |
4961 |
+ |
super(p, b); |
4962 |
+ |
this.action = action; |
4963 |
+ |
} |
4964 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
4965 |
+ |
final Action<K> action = this.action; |
4966 |
+ |
if (action == null) |
4967 |
+ |
return abortOnNullFunction(); |
4968 |
+ |
try { |
4969 |
+ |
int b = batch(), c; |
4970 |
+ |
while (b > 1 && baseIndex != baseLimit) { |
4971 |
+ |
do {} while (!casPending(c = pending, c+1)); |
4972 |
+ |
new ForEachKeyTask<K,V>(this, b >>>= 1, action).fork(); |
4973 |
+ |
} |
4974 |
+ |
while (advance() != null) |
4975 |
+ |
action.apply((K)nextKey); |
4976 |
+ |
tryComplete(); |
4977 |
+ |
} catch (Throwable ex) { |
4978 |
+ |
return tryCompleteComputation(ex); |
4979 |
+ |
} |
4980 |
+ |
return false; |
4981 |
+ |
} |
4982 |
+ |
} |
4983 |
+ |
|
4984 |
+ |
@SuppressWarnings("serial") static final class ForEachValueTask<K,V> |
4985 |
+ |
extends BulkTask<K,V,Void> { |
4986 |
+ |
final Action<V> action; |
4987 |
+ |
ForEachValueTask |
4988 |
+ |
(ConcurrentHashMapV8<K,V> m, |
4989 |
+ |
Action<V> action) { |
4990 |
+ |
super(m); |
4991 |
+ |
this.action = action; |
4992 |
+ |
} |
4993 |
+ |
ForEachValueTask |
4994 |
+ |
(BulkTask<K,V,?> p, int b, |
4995 |
+ |
Action<V> action) { |
4996 |
+ |
super(p, b); |
4997 |
+ |
this.action = action; |
4998 |
+ |
} |
4999 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5000 |
+ |
final Action<V> action = this.action; |
5001 |
+ |
if (action == null) |
5002 |
+ |
return abortOnNullFunction(); |
5003 |
+ |
try { |
5004 |
+ |
int b = batch(), c; |
5005 |
+ |
while (b > 1 && baseIndex != baseLimit) { |
5006 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5007 |
+ |
new ForEachValueTask<K,V>(this, b >>>= 1, action).fork(); |
5008 |
+ |
} |
5009 |
+ |
Object v; |
5010 |
+ |
while ((v = advance()) != null) |
5011 |
+ |
action.apply((V)v); |
5012 |
+ |
tryComplete(); |
5013 |
+ |
} catch (Throwable ex) { |
5014 |
+ |
return tryCompleteComputation(ex); |
5015 |
+ |
} |
5016 |
+ |
return false; |
5017 |
+ |
} |
5018 |
+ |
} |
5019 |
+ |
|
5020 |
+ |
@SuppressWarnings("serial") static final class ForEachEntryTask<K,V> |
5021 |
+ |
extends BulkTask<K,V,Void> { |
5022 |
+ |
final Action<Entry<K,V>> action; |
5023 |
+ |
ForEachEntryTask |
5024 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5025 |
+ |
Action<Entry<K,V>> action) { |
5026 |
+ |
super(m); |
5027 |
+ |
this.action = action; |
5028 |
+ |
} |
5029 |
+ |
ForEachEntryTask |
5030 |
+ |
(BulkTask<K,V,?> p, int b, |
5031 |
+ |
Action<Entry<K,V>> action) { |
5032 |
+ |
super(p, b); |
5033 |
+ |
this.action = action; |
5034 |
+ |
} |
5035 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5036 |
+ |
final Action<Entry<K,V>> action = this.action; |
5037 |
+ |
if (action == null) |
5038 |
+ |
return abortOnNullFunction(); |
5039 |
+ |
try { |
5040 |
+ |
int b = batch(), c; |
5041 |
+ |
while (b > 1 && baseIndex != baseLimit) { |
5042 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5043 |
+ |
new ForEachEntryTask<K,V>(this, b >>>= 1, action).fork(); |
5044 |
+ |
} |
5045 |
+ |
Object v; |
5046 |
+ |
while ((v = advance()) != null) |
5047 |
+ |
action.apply(entryFor((K)nextKey, (V)v)); |
5048 |
+ |
tryComplete(); |
5049 |
+ |
} catch (Throwable ex) { |
5050 |
+ |
return tryCompleteComputation(ex); |
5051 |
+ |
} |
5052 |
+ |
return false; |
5053 |
+ |
} |
5054 |
+ |
} |
5055 |
+ |
|
5056 |
+ |
@SuppressWarnings("serial") static final class ForEachMappingTask<K,V> |
5057 |
+ |
extends BulkTask<K,V,Void> { |
5058 |
+ |
final BiAction<K,V> action; |
5059 |
+ |
ForEachMappingTask |
5060 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5061 |
+ |
BiAction<K,V> action) { |
5062 |
+ |
super(m); |
5063 |
+ |
this.action = action; |
5064 |
+ |
} |
5065 |
+ |
ForEachMappingTask |
5066 |
+ |
(BulkTask<K,V,?> p, int b, |
5067 |
+ |
BiAction<K,V> action) { |
5068 |
+ |
super(p, b); |
5069 |
+ |
this.action = action; |
5070 |
+ |
} |
5071 |
+ |
|
5072 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5073 |
+ |
final BiAction<K,V> action = this.action; |
5074 |
+ |
if (action == null) |
5075 |
+ |
return abortOnNullFunction(); |
5076 |
+ |
try { |
5077 |
+ |
int b = batch(), c; |
5078 |
+ |
while (b > 1 && baseIndex != baseLimit) { |
5079 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5080 |
+ |
new ForEachMappingTask<K,V>(this, b >>>= 1, |
5081 |
+ |
action).fork(); |
5082 |
+ |
} |
5083 |
+ |
Object v; |
5084 |
+ |
while ((v = advance()) != null) |
5085 |
+ |
action.apply((K)nextKey, (V)v); |
5086 |
+ |
tryComplete(); |
5087 |
+ |
} catch (Throwable ex) { |
5088 |
+ |
return tryCompleteComputation(ex); |
5089 |
+ |
} |
5090 |
+ |
return false; |
5091 |
+ |
} |
5092 |
+ |
} |
5093 |
+ |
|
5094 |
+ |
@SuppressWarnings("serial") static final class ForEachTransformedKeyTask<K,V,U> |
5095 |
+ |
extends BulkTask<K,V,Void> { |
5096 |
+ |
final Fun<? super K, ? extends U> transformer; |
5097 |
+ |
final Action<U> action; |
5098 |
+ |
ForEachTransformedKeyTask |
5099 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5100 |
+ |
Fun<? super K, ? extends U> transformer, |
5101 |
+ |
Action<U> action) { |
5102 |
+ |
super(m); |
5103 |
+ |
this.transformer = transformer; |
5104 |
+ |
this.action = action; |
5105 |
+ |
|
5106 |
+ |
} |
5107 |
+ |
ForEachTransformedKeyTask |
5108 |
+ |
(BulkTask<K,V,?> p, int b, |
5109 |
+ |
Fun<? super K, ? extends U> transformer, |
5110 |
+ |
Action<U> action) { |
5111 |
+ |
super(p, b); |
5112 |
+ |
this.transformer = transformer; |
5113 |
+ |
this.action = action; |
5114 |
+ |
} |
5115 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5116 |
+ |
final Fun<? super K, ? extends U> transformer = |
5117 |
+ |
this.transformer; |
5118 |
+ |
final Action<U> action = this.action; |
5119 |
+ |
if (transformer == null || action == null) |
5120 |
+ |
return abortOnNullFunction(); |
5121 |
+ |
try { |
5122 |
+ |
int b = batch(), c; |
5123 |
+ |
while (b > 1 && baseIndex != baseLimit) { |
5124 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5125 |
+ |
new ForEachTransformedKeyTask<K,V,U> |
5126 |
+ |
(this, b >>>= 1, transformer, action).fork(); |
5127 |
+ |
} |
5128 |
+ |
U u; |
5129 |
+ |
while (advance() != null) { |
5130 |
+ |
if ((u = transformer.apply((K)nextKey)) != null) |
5131 |
+ |
action.apply(u); |
5132 |
+ |
} |
5133 |
+ |
tryComplete(); |
5134 |
+ |
} catch (Throwable ex) { |
5135 |
+ |
return tryCompleteComputation(ex); |
5136 |
+ |
} |
5137 |
+ |
return false; |
5138 |
+ |
} |
5139 |
+ |
} |
5140 |
+ |
|
5141 |
+ |
@SuppressWarnings("serial") static final class ForEachTransformedValueTask<K,V,U> |
5142 |
+ |
extends BulkTask<K,V,Void> { |
5143 |
+ |
final Fun<? super V, ? extends U> transformer; |
5144 |
+ |
final Action<U> action; |
5145 |
+ |
ForEachTransformedValueTask |
5146 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5147 |
+ |
Fun<? super V, ? extends U> transformer, |
5148 |
+ |
Action<U> action) { |
5149 |
+ |
super(m); |
5150 |
+ |
this.transformer = transformer; |
5151 |
+ |
this.action = action; |
5152 |
+ |
|
5153 |
+ |
} |
5154 |
+ |
ForEachTransformedValueTask |
5155 |
+ |
(BulkTask<K,V,?> p, int b, |
5156 |
+ |
Fun<? super V, ? extends U> transformer, |
5157 |
+ |
Action<U> action) { |
5158 |
+ |
super(p, b); |
5159 |
+ |
this.transformer = transformer; |
5160 |
+ |
this.action = action; |
5161 |
+ |
} |
5162 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5163 |
+ |
final Fun<? super V, ? extends U> transformer = |
5164 |
+ |
this.transformer; |
5165 |
+ |
final Action<U> action = this.action; |
5166 |
+ |
if (transformer == null || action == null) |
5167 |
+ |
return abortOnNullFunction(); |
5168 |
+ |
try { |
5169 |
+ |
int b = batch(), c; |
5170 |
+ |
while (b > 1 && baseIndex != baseLimit) { |
5171 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5172 |
+ |
new ForEachTransformedValueTask<K,V,U> |
5173 |
+ |
(this, b >>>= 1, transformer, action).fork(); |
5174 |
+ |
} |
5175 |
+ |
Object v; U u; |
5176 |
+ |
while ((v = advance()) != null) { |
5177 |
+ |
if ((u = transformer.apply((V)v)) != null) |
5178 |
+ |
action.apply(u); |
5179 |
+ |
} |
5180 |
+ |
tryComplete(); |
5181 |
+ |
} catch (Throwable ex) { |
5182 |
+ |
return tryCompleteComputation(ex); |
5183 |
+ |
} |
5184 |
+ |
return false; |
5185 |
+ |
} |
5186 |
+ |
} |
5187 |
+ |
|
5188 |
+ |
@SuppressWarnings("serial") static final class ForEachTransformedEntryTask<K,V,U> |
5189 |
+ |
extends BulkTask<K,V,Void> { |
5190 |
+ |
final Fun<Map.Entry<K,V>, ? extends U> transformer; |
5191 |
+ |
final Action<U> action; |
5192 |
+ |
ForEachTransformedEntryTask |
5193 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5194 |
+ |
Fun<Map.Entry<K,V>, ? extends U> transformer, |
5195 |
+ |
Action<U> action) { |
5196 |
+ |
super(m); |
5197 |
+ |
this.transformer = transformer; |
5198 |
+ |
this.action = action; |
5199 |
+ |
|
5200 |
+ |
} |
5201 |
+ |
ForEachTransformedEntryTask |
5202 |
+ |
(BulkTask<K,V,?> p, int b, |
5203 |
+ |
Fun<Map.Entry<K,V>, ? extends U> transformer, |
5204 |
+ |
Action<U> action) { |
5205 |
+ |
super(p, b); |
5206 |
+ |
this.transformer = transformer; |
5207 |
+ |
this.action = action; |
5208 |
+ |
} |
5209 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5210 |
+ |
final Fun<Map.Entry<K,V>, ? extends U> transformer = |
5211 |
+ |
this.transformer; |
5212 |
+ |
final Action<U> action = this.action; |
5213 |
+ |
if (transformer == null || action == null) |
5214 |
+ |
return abortOnNullFunction(); |
5215 |
+ |
try { |
5216 |
+ |
int b = batch(), c; |
5217 |
+ |
while (b > 1 && baseIndex != baseLimit) { |
5218 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5219 |
+ |
new ForEachTransformedEntryTask<K,V,U> |
5220 |
+ |
(this, b >>>= 1, transformer, action).fork(); |
5221 |
+ |
} |
5222 |
+ |
Object v; U u; |
5223 |
+ |
while ((v = advance()) != null) { |
5224 |
+ |
if ((u = transformer.apply(entryFor((K)nextKey, (V)v))) != null) |
5225 |
+ |
action.apply(u); |
5226 |
+ |
} |
5227 |
+ |
tryComplete(); |
5228 |
+ |
} catch (Throwable ex) { |
5229 |
+ |
return tryCompleteComputation(ex); |
5230 |
+ |
} |
5231 |
+ |
return false; |
5232 |
+ |
} |
5233 |
+ |
} |
5234 |
+ |
|
5235 |
+ |
@SuppressWarnings("serial") static final class ForEachTransformedMappingTask<K,V,U> |
5236 |
+ |
extends BulkTask<K,V,Void> { |
5237 |
+ |
final BiFun<? super K, ? super V, ? extends U> transformer; |
5238 |
+ |
final Action<U> action; |
5239 |
+ |
ForEachTransformedMappingTask |
5240 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5241 |
+ |
BiFun<? super K, ? super V, ? extends U> transformer, |
5242 |
+ |
Action<U> action) { |
5243 |
+ |
super(m); |
5244 |
+ |
this.transformer = transformer; |
5245 |
+ |
this.action = action; |
5246 |
+ |
|
5247 |
+ |
} |
5248 |
+ |
ForEachTransformedMappingTask |
5249 |
+ |
(BulkTask<K,V,?> p, int b, |
5250 |
+ |
BiFun<? super K, ? super V, ? extends U> transformer, |
5251 |
+ |
Action<U> action) { |
5252 |
+ |
super(p, b); |
5253 |
+ |
this.transformer = transformer; |
5254 |
+ |
this.action = action; |
5255 |
+ |
} |
5256 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5257 |
+ |
final BiFun<? super K, ? super V, ? extends U> transformer = |
5258 |
+ |
this.transformer; |
5259 |
+ |
final Action<U> action = this.action; |
5260 |
+ |
if (transformer == null || action == null) |
5261 |
+ |
return abortOnNullFunction(); |
5262 |
+ |
try { |
5263 |
+ |
int b = batch(), c; |
5264 |
+ |
while (b > 1 && baseIndex != baseLimit) { |
5265 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5266 |
+ |
new ForEachTransformedMappingTask<K,V,U> |
5267 |
+ |
(this, b >>>= 1, transformer, action).fork(); |
5268 |
+ |
} |
5269 |
+ |
Object v; U u; |
5270 |
+ |
while ((v = advance()) != null) { |
5271 |
+ |
if ((u = transformer.apply((K)nextKey, (V)v)) != null) |
5272 |
+ |
action.apply(u); |
5273 |
+ |
} |
5274 |
+ |
tryComplete(); |
5275 |
+ |
} catch (Throwable ex) { |
5276 |
+ |
return tryCompleteComputation(ex); |
5277 |
+ |
} |
5278 |
+ |
return false; |
5279 |
+ |
} |
5280 |
+ |
} |
5281 |
+ |
|
5282 |
+ |
@SuppressWarnings("serial") static final class SearchKeysTask<K,V,U> |
5283 |
+ |
extends BulkTask<K,V,U> { |
5284 |
+ |
final Fun<? super K, ? extends U> searchFunction; |
5285 |
+ |
final AtomicReference<U> result; |
5286 |
+ |
SearchKeysTask |
5287 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5288 |
+ |
Fun<? super K, ? extends U> searchFunction, |
5289 |
+ |
AtomicReference<U> result) { |
5290 |
+ |
super(m); |
5291 |
+ |
this.searchFunction = searchFunction; this.result = result; |
5292 |
+ |
} |
5293 |
+ |
SearchKeysTask |
5294 |
+ |
(BulkTask<K,V,?> p, int b, |
5295 |
+ |
Fun<? super K, ? extends U> searchFunction, |
5296 |
+ |
AtomicReference<U> result) { |
5297 |
+ |
super(p, b); |
5298 |
+ |
this.searchFunction = searchFunction; this.result = result; |
5299 |
+ |
} |
5300 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5301 |
+ |
AtomicReference<U> result = this.result; |
5302 |
+ |
final Fun<? super K, ? extends U> searchFunction = |
5303 |
+ |
this.searchFunction; |
5304 |
+ |
if (searchFunction == null || result == null) |
5305 |
+ |
return abortOnNullFunction(); |
5306 |
+ |
try { |
5307 |
+ |
int b = batch(), c; |
5308 |
+ |
while (b > 1 && baseIndex != baseLimit && result.get() == null) { |
5309 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5310 |
+ |
new SearchKeysTask<K,V,U>(this, b >>>= 1, |
5311 |
+ |
searchFunction, result).fork(); |
5312 |
+ |
} |
5313 |
+ |
U u; |
5314 |
+ |
while (result.get() == null && advance() != null) { |
5315 |
+ |
if ((u = searchFunction.apply((K)nextKey)) != null) { |
5316 |
+ |
if (result.compareAndSet(null, u)) |
5317 |
+ |
tryCompleteComputation(null); |
5318 |
+ |
break; |
5319 |
+ |
} |
5320 |
+ |
} |
5321 |
+ |
tryComplete(); |
5322 |
+ |
} catch (Throwable ex) { |
5323 |
+ |
return tryCompleteComputation(ex); |
5324 |
+ |
} |
5325 |
+ |
return false; |
5326 |
+ |
} |
5327 |
+ |
public final U getRawResult() { return result.get(); } |
5328 |
+ |
} |
5329 |
+ |
|
5330 |
+ |
@SuppressWarnings("serial") static final class SearchValuesTask<K,V,U> |
5331 |
+ |
extends BulkTask<K,V,U> { |
5332 |
+ |
final Fun<? super V, ? extends U> searchFunction; |
5333 |
+ |
final AtomicReference<U> result; |
5334 |
+ |
SearchValuesTask |
5335 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5336 |
+ |
Fun<? super V, ? extends U> searchFunction, |
5337 |
+ |
AtomicReference<U> result) { |
5338 |
+ |
super(m); |
5339 |
+ |
this.searchFunction = searchFunction; this.result = result; |
5340 |
+ |
} |
5341 |
+ |
SearchValuesTask |
5342 |
+ |
(BulkTask<K,V,?> p, int b, |
5343 |
+ |
Fun<? super V, ? extends U> searchFunction, |
5344 |
+ |
AtomicReference<U> result) { |
5345 |
+ |
super(p, b); |
5346 |
+ |
this.searchFunction = searchFunction; this.result = result; |
5347 |
+ |
} |
5348 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5349 |
+ |
AtomicReference<U> result = this.result; |
5350 |
+ |
final Fun<? super V, ? extends U> searchFunction = |
5351 |
+ |
this.searchFunction; |
5352 |
+ |
if (searchFunction == null || result == null) |
5353 |
+ |
return abortOnNullFunction(); |
5354 |
+ |
try { |
5355 |
+ |
int b = batch(), c; |
5356 |
+ |
while (b > 1 && baseIndex != baseLimit && result.get() == null) { |
5357 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5358 |
+ |
new SearchValuesTask<K,V,U>(this, b >>>= 1, |
5359 |
+ |
searchFunction, result).fork(); |
5360 |
+ |
} |
5361 |
+ |
Object v; U u; |
5362 |
+ |
while (result.get() == null && (v = advance()) != null) { |
5363 |
+ |
if ((u = searchFunction.apply((V)v)) != null) { |
5364 |
+ |
if (result.compareAndSet(null, u)) |
5365 |
+ |
tryCompleteComputation(null); |
5366 |
+ |
break; |
5367 |
+ |
} |
5368 |
+ |
} |
5369 |
+ |
tryComplete(); |
5370 |
+ |
} catch (Throwable ex) { |
5371 |
+ |
return tryCompleteComputation(ex); |
5372 |
+ |
} |
5373 |
+ |
return false; |
5374 |
+ |
} |
5375 |
+ |
public final U getRawResult() { return result.get(); } |
5376 |
+ |
} |
5377 |
+ |
|
5378 |
+ |
@SuppressWarnings("serial") static final class SearchEntriesTask<K,V,U> |
5379 |
+ |
extends BulkTask<K,V,U> { |
5380 |
+ |
final Fun<Entry<K,V>, ? extends U> searchFunction; |
5381 |
+ |
final AtomicReference<U> result; |
5382 |
+ |
SearchEntriesTask |
5383 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5384 |
+ |
Fun<Entry<K,V>, ? extends U> searchFunction, |
5385 |
+ |
AtomicReference<U> result) { |
5386 |
+ |
super(m); |
5387 |
+ |
this.searchFunction = searchFunction; this.result = result; |
5388 |
+ |
} |
5389 |
+ |
SearchEntriesTask |
5390 |
+ |
(BulkTask<K,V,?> p, int b, |
5391 |
+ |
Fun<Entry<K,V>, ? extends U> searchFunction, |
5392 |
+ |
AtomicReference<U> result) { |
5393 |
+ |
super(p, b); |
5394 |
+ |
this.searchFunction = searchFunction; this.result = result; |
5395 |
+ |
} |
5396 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5397 |
+ |
AtomicReference<U> result = this.result; |
5398 |
+ |
final Fun<Entry<K,V>, ? extends U> searchFunction = |
5399 |
+ |
this.searchFunction; |
5400 |
+ |
if (searchFunction == null || result == null) |
5401 |
+ |
return abortOnNullFunction(); |
5402 |
+ |
try { |
5403 |
+ |
int b = batch(), c; |
5404 |
+ |
while (b > 1 && baseIndex != baseLimit && result.get() == null) { |
5405 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5406 |
+ |
new SearchEntriesTask<K,V,U>(this, b >>>= 1, |
5407 |
+ |
searchFunction, result).fork(); |
5408 |
+ |
} |
5409 |
+ |
Object v; U u; |
5410 |
+ |
while (result.get() == null && (v = advance()) != null) { |
5411 |
+ |
if ((u = searchFunction.apply(entryFor((K)nextKey, (V)v))) != null) { |
5412 |
+ |
if (result.compareAndSet(null, u)) |
5413 |
+ |
tryCompleteComputation(null); |
5414 |
+ |
break; |
5415 |
+ |
} |
5416 |
+ |
} |
5417 |
+ |
tryComplete(); |
5418 |
+ |
} catch (Throwable ex) { |
5419 |
+ |
return tryCompleteComputation(ex); |
5420 |
+ |
} |
5421 |
+ |
return false; |
5422 |
+ |
} |
5423 |
+ |
public final U getRawResult() { return result.get(); } |
5424 |
+ |
} |
5425 |
+ |
|
5426 |
+ |
@SuppressWarnings("serial") static final class SearchMappingsTask<K,V,U> |
5427 |
+ |
extends BulkTask<K,V,U> { |
5428 |
+ |
final BiFun<? super K, ? super V, ? extends U> searchFunction; |
5429 |
+ |
final AtomicReference<U> result; |
5430 |
+ |
SearchMappingsTask |
5431 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5432 |
+ |
BiFun<? super K, ? super V, ? extends U> searchFunction, |
5433 |
+ |
AtomicReference<U> result) { |
5434 |
+ |
super(m); |
5435 |
+ |
this.searchFunction = searchFunction; this.result = result; |
5436 |
+ |
} |
5437 |
+ |
SearchMappingsTask |
5438 |
+ |
(BulkTask<K,V,?> p, int b, |
5439 |
+ |
BiFun<? super K, ? super V, ? extends U> searchFunction, |
5440 |
+ |
AtomicReference<U> result) { |
5441 |
+ |
super(p, b); |
5442 |
+ |
this.searchFunction = searchFunction; this.result = result; |
5443 |
+ |
} |
5444 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5445 |
+ |
AtomicReference<U> result = this.result; |
5446 |
+ |
final BiFun<? super K, ? super V, ? extends U> searchFunction = |
5447 |
+ |
this.searchFunction; |
5448 |
+ |
if (searchFunction == null || result == null) |
5449 |
+ |
return abortOnNullFunction(); |
5450 |
+ |
try { |
5451 |
+ |
int b = batch(), c; |
5452 |
+ |
while (b > 1 && baseIndex != baseLimit && result.get() == null) { |
5453 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5454 |
+ |
new SearchMappingsTask<K,V,U>(this, b >>>= 1, |
5455 |
+ |
searchFunction, result).fork(); |
5456 |
+ |
} |
5457 |
+ |
Object v; U u; |
5458 |
+ |
while (result.get() == null && (v = advance()) != null) { |
5459 |
+ |
if ((u = searchFunction.apply((K)nextKey, (V)v)) != null) { |
5460 |
+ |
if (result.compareAndSet(null, u)) |
5461 |
+ |
tryCompleteComputation(null); |
5462 |
+ |
break; |
5463 |
+ |
} |
5464 |
+ |
} |
5465 |
+ |
tryComplete(); |
5466 |
+ |
} catch (Throwable ex) { |
5467 |
+ |
return tryCompleteComputation(ex); |
5468 |
+ |
} |
5469 |
+ |
return false; |
5470 |
+ |
} |
5471 |
+ |
public final U getRawResult() { return result.get(); } |
5472 |
+ |
} |
5473 |
+ |
|
5474 |
+ |
@SuppressWarnings("serial") static final class ReduceKeysTask<K,V> |
5475 |
+ |
extends BulkTask<K,V,K> { |
5476 |
+ |
final BiFun<? super K, ? super K, ? extends K> reducer; |
5477 |
+ |
K result; |
5478 |
+ |
ReduceKeysTask<K,V> rights, nextRight; |
5479 |
+ |
ReduceKeysTask |
5480 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5481 |
+ |
BiFun<? super K, ? super K, ? extends K> reducer) { |
5482 |
+ |
super(m); |
5483 |
+ |
this.reducer = reducer; |
5484 |
+ |
} |
5485 |
+ |
ReduceKeysTask |
5486 |
+ |
(BulkTask<K,V,?> p, int b, |
5487 |
+ |
ReduceKeysTask<K,V> nextRight, |
5488 |
+ |
BiFun<? super K, ? super K, ? extends K> reducer) { |
5489 |
+ |
super(p, b); this.nextRight = nextRight; |
5490 |
+ |
this.reducer = reducer; |
5491 |
+ |
} |
5492 |
+ |
|
5493 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5494 |
+ |
final BiFun<? super K, ? super K, ? extends K> reducer = |
5495 |
+ |
this.reducer; |
5496 |
+ |
if (reducer == null) |
5497 |
+ |
return abortOnNullFunction(); |
5498 |
+ |
try { |
5499 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
5500 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5501 |
+ |
(rights = new ReduceKeysTask<K,V> |
5502 |
+ |
(this, b >>>= 1, rights, reducer)).fork(); |
5503 |
+ |
} |
5504 |
+ |
K r = null; |
5505 |
+ |
while (advance() != null) { |
5506 |
+ |
K u = (K)nextKey; |
5507 |
+ |
r = (r == null) ? u : reducer.apply(r, u); |
5508 |
+ |
} |
5509 |
+ |
result = r; |
5510 |
+ |
for (ReduceKeysTask<K,V> t = this, s;;) { |
5511 |
+ |
int c; BulkTask<K,V,?> par; K tr, sr; |
5512 |
+ |
if ((c = t.pending) == 0) { |
5513 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
5514 |
+ |
if ((sr = s.result) != null) |
5515 |
+ |
t.result = (tr = t.result) == null? sr : reducer.apply(tr, sr); |
5516 |
+ |
} |
5517 |
+ |
if ((par = t.parent) == null || |
5518 |
+ |
!(par instanceof ReduceKeysTask)) { |
5519 |
+ |
t.quietlyComplete(); |
5520 |
+ |
break; |
5521 |
+ |
} |
5522 |
+ |
t = (ReduceKeysTask<K,V>)par; |
5523 |
+ |
} |
5524 |
+ |
else if (t.casPending(c, c - 1)) |
5525 |
+ |
break; |
5526 |
+ |
} |
5527 |
+ |
} catch (Throwable ex) { |
5528 |
+ |
return tryCompleteComputation(ex); |
5529 |
+ |
} |
5530 |
+ |
return false; |
5531 |
+ |
} |
5532 |
+ |
public final K getRawResult() { return result; } |
5533 |
+ |
} |
5534 |
+ |
|
5535 |
+ |
@SuppressWarnings("serial") static final class ReduceValuesTask<K,V> |
5536 |
+ |
extends BulkTask<K,V,V> { |
5537 |
+ |
final BiFun<? super V, ? super V, ? extends V> reducer; |
5538 |
+ |
V result; |
5539 |
+ |
ReduceValuesTask<K,V> rights, nextRight; |
5540 |
+ |
ReduceValuesTask |
5541 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5542 |
+ |
BiFun<? super V, ? super V, ? extends V> reducer) { |
5543 |
+ |
super(m); |
5544 |
+ |
this.reducer = reducer; |
5545 |
+ |
} |
5546 |
+ |
ReduceValuesTask |
5547 |
+ |
(BulkTask<K,V,?> p, int b, |
5548 |
+ |
ReduceValuesTask<K,V> nextRight, |
5549 |
+ |
BiFun<? super V, ? super V, ? extends V> reducer) { |
5550 |
+ |
super(p, b); this.nextRight = nextRight; |
5551 |
+ |
this.reducer = reducer; |
5552 |
+ |
} |
5553 |
+ |
|
5554 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5555 |
+ |
final BiFun<? super V, ? super V, ? extends V> reducer = |
5556 |
+ |
this.reducer; |
5557 |
+ |
if (reducer == null) |
5558 |
+ |
return abortOnNullFunction(); |
5559 |
+ |
try { |
5560 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
5561 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5562 |
+ |
(rights = new ReduceValuesTask<K,V> |
5563 |
+ |
(this, b >>>= 1, rights, reducer)).fork(); |
5564 |
+ |
} |
5565 |
+ |
V r = null; |
5566 |
+ |
Object v; |
5567 |
+ |
while ((v = advance()) != null) { |
5568 |
+ |
V u = (V)v; |
5569 |
+ |
r = (r == null) ? u : reducer.apply(r, u); |
5570 |
+ |
} |
5571 |
+ |
result = r; |
5572 |
+ |
for (ReduceValuesTask<K,V> t = this, s;;) { |
5573 |
+ |
int c; BulkTask<K,V,?> par; V tr, sr; |
5574 |
+ |
if ((c = t.pending) == 0) { |
5575 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
5576 |
+ |
if ((sr = s.result) != null) |
5577 |
+ |
t.result = (tr = t.result) == null? sr : reducer.apply(tr, sr); |
5578 |
+ |
} |
5579 |
+ |
if ((par = t.parent) == null || |
5580 |
+ |
!(par instanceof ReduceValuesTask)) { |
5581 |
+ |
t.quietlyComplete(); |
5582 |
+ |
break; |
5583 |
+ |
} |
5584 |
+ |
t = (ReduceValuesTask<K,V>)par; |
5585 |
+ |
} |
5586 |
+ |
else if (t.casPending(c, c - 1)) |
5587 |
+ |
break; |
5588 |
+ |
} |
5589 |
+ |
} catch (Throwable ex) { |
5590 |
+ |
return tryCompleteComputation(ex); |
5591 |
+ |
} |
5592 |
+ |
return false; |
5593 |
+ |
} |
5594 |
+ |
public final V getRawResult() { return result; } |
5595 |
+ |
} |
5596 |
+ |
|
5597 |
+ |
@SuppressWarnings("serial") static final class ReduceEntriesTask<K,V> |
5598 |
+ |
extends BulkTask<K,V,Map.Entry<K,V>> { |
5599 |
+ |
final BiFun<Map.Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer; |
5600 |
+ |
Map.Entry<K,V> result; |
5601 |
+ |
ReduceEntriesTask<K,V> rights, nextRight; |
5602 |
+ |
ReduceEntriesTask |
5603 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5604 |
+ |
BiFun<Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer) { |
5605 |
+ |
super(m); |
5606 |
+ |
this.reducer = reducer; |
5607 |
+ |
} |
5608 |
+ |
ReduceEntriesTask |
5609 |
+ |
(BulkTask<K,V,?> p, int b, |
5610 |
+ |
ReduceEntriesTask<K,V> nextRight, |
5611 |
+ |
BiFun<Map.Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer) { |
5612 |
+ |
super(p, b); this.nextRight = nextRight; |
5613 |
+ |
this.reducer = reducer; |
5614 |
+ |
} |
5615 |
+ |
|
5616 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5617 |
+ |
final BiFun<Map.Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer = |
5618 |
+ |
this.reducer; |
5619 |
+ |
if (reducer == null) |
5620 |
+ |
return abortOnNullFunction(); |
5621 |
+ |
try { |
5622 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
5623 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5624 |
+ |
(rights = new ReduceEntriesTask<K,V> |
5625 |
+ |
(this, b >>>= 1, rights, reducer)).fork(); |
5626 |
+ |
} |
5627 |
+ |
Map.Entry<K,V> r = null; |
5628 |
+ |
Object v; |
5629 |
+ |
while ((v = advance()) != null) { |
5630 |
+ |
Map.Entry<K,V> u = entryFor((K)nextKey, (V)v); |
5631 |
+ |
r = (r == null) ? u : reducer.apply(r, u); |
5632 |
+ |
} |
5633 |
+ |
result = r; |
5634 |
+ |
for (ReduceEntriesTask<K,V> t = this, s;;) { |
5635 |
+ |
int c; BulkTask<K,V,?> par; Map.Entry<K,V> tr, sr; |
5636 |
+ |
if ((c = t.pending) == 0) { |
5637 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
5638 |
+ |
if ((sr = s.result) != null) |
5639 |
+ |
t.result = (tr = t.result) == null? sr : reducer.apply(tr, sr); |
5640 |
+ |
} |
5641 |
+ |
if ((par = t.parent) == null || |
5642 |
+ |
!(par instanceof ReduceEntriesTask)) { |
5643 |
+ |
t.quietlyComplete(); |
5644 |
+ |
break; |
5645 |
+ |
} |
5646 |
+ |
t = (ReduceEntriesTask<K,V>)par; |
5647 |
+ |
} |
5648 |
+ |
else if (t.casPending(c, c - 1)) |
5649 |
+ |
break; |
5650 |
+ |
} |
5651 |
+ |
} catch (Throwable ex) { |
5652 |
+ |
return tryCompleteComputation(ex); |
5653 |
+ |
} |
5654 |
+ |
return false; |
5655 |
+ |
} |
5656 |
+ |
public final Map.Entry<K,V> getRawResult() { return result; } |
5657 |
+ |
} |
5658 |
+ |
|
5659 |
+ |
@SuppressWarnings("serial") static final class MapReduceKeysTask<K,V,U> |
5660 |
+ |
extends BulkTask<K,V,U> { |
5661 |
+ |
final Fun<? super K, ? extends U> transformer; |
5662 |
+ |
final BiFun<? super U, ? super U, ? extends U> reducer; |
5663 |
+ |
U result; |
5664 |
+ |
MapReduceKeysTask<K,V,U> rights, nextRight; |
5665 |
+ |
MapReduceKeysTask |
5666 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5667 |
+ |
Fun<? super K, ? extends U> transformer, |
5668 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
5669 |
+ |
super(m); |
5670 |
+ |
this.transformer = transformer; |
5671 |
+ |
this.reducer = reducer; |
5672 |
+ |
} |
5673 |
+ |
MapReduceKeysTask |
5674 |
+ |
(BulkTask<K,V,?> p, int b, |
5675 |
+ |
MapReduceKeysTask<K,V,U> nextRight, |
5676 |
+ |
Fun<? super K, ? extends U> transformer, |
5677 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
5678 |
+ |
super(p, b); this.nextRight = nextRight; |
5679 |
+ |
this.transformer = transformer; |
5680 |
+ |
this.reducer = reducer; |
5681 |
+ |
} |
5682 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5683 |
+ |
final Fun<? super K, ? extends U> transformer = |
5684 |
+ |
this.transformer; |
5685 |
+ |
final BiFun<? super U, ? super U, ? extends U> reducer = |
5686 |
+ |
this.reducer; |
5687 |
+ |
if (transformer == null || reducer == null) |
5688 |
+ |
return abortOnNullFunction(); |
5689 |
+ |
try { |
5690 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
5691 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5692 |
+ |
(rights = new MapReduceKeysTask<K,V,U> |
5693 |
+ |
(this, b >>>= 1, rights, transformer, reducer)).fork(); |
5694 |
+ |
} |
5695 |
+ |
U r = null, u; |
5696 |
+ |
while (advance() != null) { |
5697 |
+ |
if ((u = transformer.apply((K)nextKey)) != null) |
5698 |
+ |
r = (r == null) ? u : reducer.apply(r, u); |
5699 |
+ |
} |
5700 |
+ |
result = r; |
5701 |
+ |
for (MapReduceKeysTask<K,V,U> t = this, s;;) { |
5702 |
+ |
int c; BulkTask<K,V,?> par; U tr, sr; |
5703 |
+ |
if ((c = t.pending) == 0) { |
5704 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
5705 |
+ |
if ((sr = s.result) != null) |
5706 |
+ |
t.result = (tr = t.result) == null? sr : reducer.apply(tr, sr); |
5707 |
+ |
} |
5708 |
+ |
if ((par = t.parent) == null || |
5709 |
+ |
!(par instanceof MapReduceKeysTask)) { |
5710 |
+ |
t.quietlyComplete(); |
5711 |
+ |
break; |
5712 |
+ |
} |
5713 |
+ |
t = (MapReduceKeysTask<K,V,U>)par; |
5714 |
+ |
} |
5715 |
+ |
else if (t.casPending(c, c - 1)) |
5716 |
+ |
break; |
5717 |
+ |
} |
5718 |
+ |
} catch (Throwable ex) { |
5719 |
+ |
return tryCompleteComputation(ex); |
5720 |
+ |
} |
5721 |
+ |
return false; |
5722 |
+ |
} |
5723 |
+ |
public final U getRawResult() { return result; } |
5724 |
+ |
} |
5725 |
+ |
|
5726 |
+ |
@SuppressWarnings("serial") static final class MapReduceValuesTask<K,V,U> |
5727 |
+ |
extends BulkTask<K,V,U> { |
5728 |
+ |
final Fun<? super V, ? extends U> transformer; |
5729 |
+ |
final BiFun<? super U, ? super U, ? extends U> reducer; |
5730 |
+ |
U result; |
5731 |
+ |
MapReduceValuesTask<K,V,U> rights, nextRight; |
5732 |
+ |
MapReduceValuesTask |
5733 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5734 |
+ |
Fun<? super V, ? extends U> transformer, |
5735 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
5736 |
+ |
super(m); |
5737 |
+ |
this.transformer = transformer; |
5738 |
+ |
this.reducer = reducer; |
5739 |
+ |
} |
5740 |
+ |
MapReduceValuesTask |
5741 |
+ |
(BulkTask<K,V,?> p, int b, |
5742 |
+ |
MapReduceValuesTask<K,V,U> nextRight, |
5743 |
+ |
Fun<? super V, ? extends U> transformer, |
5744 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
5745 |
+ |
super(p, b); this.nextRight = nextRight; |
5746 |
+ |
this.transformer = transformer; |
5747 |
+ |
this.reducer = reducer; |
5748 |
+ |
} |
5749 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5750 |
+ |
final Fun<? super V, ? extends U> transformer = |
5751 |
+ |
this.transformer; |
5752 |
+ |
final BiFun<? super U, ? super U, ? extends U> reducer = |
5753 |
+ |
this.reducer; |
5754 |
+ |
if (transformer == null || reducer == null) |
5755 |
+ |
return abortOnNullFunction(); |
5756 |
+ |
try { |
5757 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
5758 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5759 |
+ |
(rights = new MapReduceValuesTask<K,V,U> |
5760 |
+ |
(this, b >>>= 1, rights, transformer, reducer)).fork(); |
5761 |
+ |
} |
5762 |
+ |
U r = null, u; |
5763 |
+ |
Object v; |
5764 |
+ |
while ((v = advance()) != null) { |
5765 |
+ |
if ((u = transformer.apply((V)v)) != null) |
5766 |
+ |
r = (r == null) ? u : reducer.apply(r, u); |
5767 |
+ |
} |
5768 |
+ |
result = r; |
5769 |
+ |
for (MapReduceValuesTask<K,V,U> t = this, s;;) { |
5770 |
+ |
int c; BulkTask<K,V,?> par; U tr, sr; |
5771 |
+ |
if ((c = t.pending) == 0) { |
5772 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
5773 |
+ |
if ((sr = s.result) != null) |
5774 |
+ |
t.result = (tr = t.result) == null? sr : reducer.apply(tr, sr); |
5775 |
+ |
} |
5776 |
+ |
if ((par = t.parent) == null || |
5777 |
+ |
!(par instanceof MapReduceValuesTask)) { |
5778 |
+ |
t.quietlyComplete(); |
5779 |
+ |
break; |
5780 |
+ |
} |
5781 |
+ |
t = (MapReduceValuesTask<K,V,U>)par; |
5782 |
+ |
} |
5783 |
+ |
else if (t.casPending(c, c - 1)) |
5784 |
+ |
break; |
5785 |
+ |
} |
5786 |
+ |
} catch (Throwable ex) { |
5787 |
+ |
return tryCompleteComputation(ex); |
5788 |
+ |
} |
5789 |
+ |
return false; |
5790 |
+ |
} |
5791 |
+ |
public final U getRawResult() { return result; } |
5792 |
+ |
} |
5793 |
+ |
|
5794 |
+ |
@SuppressWarnings("serial") static final class MapReduceEntriesTask<K,V,U> |
5795 |
+ |
extends BulkTask<K,V,U> { |
5796 |
+ |
final Fun<Map.Entry<K,V>, ? extends U> transformer; |
5797 |
+ |
final BiFun<? super U, ? super U, ? extends U> reducer; |
5798 |
+ |
U result; |
5799 |
+ |
MapReduceEntriesTask<K,V,U> rights, nextRight; |
5800 |
+ |
MapReduceEntriesTask |
5801 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5802 |
+ |
Fun<Map.Entry<K,V>, ? extends U> transformer, |
5803 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
5804 |
+ |
super(m); |
5805 |
+ |
this.transformer = transformer; |
5806 |
+ |
this.reducer = reducer; |
5807 |
+ |
} |
5808 |
+ |
MapReduceEntriesTask |
5809 |
+ |
(BulkTask<K,V,?> p, int b, |
5810 |
+ |
MapReduceEntriesTask<K,V,U> nextRight, |
5811 |
+ |
Fun<Map.Entry<K,V>, ? extends U> transformer, |
5812 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
5813 |
+ |
super(p, b); this.nextRight = nextRight; |
5814 |
+ |
this.transformer = transformer; |
5815 |
+ |
this.reducer = reducer; |
5816 |
+ |
} |
5817 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5818 |
+ |
final Fun<Map.Entry<K,V>, ? extends U> transformer = |
5819 |
+ |
this.transformer; |
5820 |
+ |
final BiFun<? super U, ? super U, ? extends U> reducer = |
5821 |
+ |
this.reducer; |
5822 |
+ |
if (transformer == null || reducer == null) |
5823 |
+ |
return abortOnNullFunction(); |
5824 |
+ |
try { |
5825 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
5826 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5827 |
+ |
(rights = new MapReduceEntriesTask<K,V,U> |
5828 |
+ |
(this, b >>>= 1, rights, transformer, reducer)).fork(); |
5829 |
+ |
} |
5830 |
+ |
U r = null, u; |
5831 |
+ |
Object v; |
5832 |
+ |
while ((v = advance()) != null) { |
5833 |
+ |
if ((u = transformer.apply(entryFor((K)nextKey, (V)v))) != null) |
5834 |
+ |
r = (r == null) ? u : reducer.apply(r, u); |
5835 |
+ |
} |
5836 |
+ |
result = r; |
5837 |
+ |
for (MapReduceEntriesTask<K,V,U> t = this, s;;) { |
5838 |
+ |
int c; BulkTask<K,V,?> par; U tr, sr; |
5839 |
+ |
if ((c = t.pending) == 0) { |
5840 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
5841 |
+ |
if ((sr = s.result) != null) |
5842 |
+ |
t.result = (tr = t.result) == null? sr : reducer.apply(tr, sr); |
5843 |
+ |
} |
5844 |
+ |
if ((par = t.parent) == null || |
5845 |
+ |
!(par instanceof MapReduceEntriesTask)) { |
5846 |
+ |
t.quietlyComplete(); |
5847 |
+ |
break; |
5848 |
+ |
} |
5849 |
+ |
t = (MapReduceEntriesTask<K,V,U>)par; |
5850 |
+ |
} |
5851 |
+ |
else if (t.casPending(c, c - 1)) |
5852 |
+ |
break; |
5853 |
+ |
} |
5854 |
+ |
} catch (Throwable ex) { |
5855 |
+ |
return tryCompleteComputation(ex); |
5856 |
+ |
} |
5857 |
+ |
return false; |
5858 |
+ |
} |
5859 |
+ |
public final U getRawResult() { return result; } |
5860 |
+ |
} |
5861 |
+ |
|
5862 |
+ |
@SuppressWarnings("serial") static final class MapReduceMappingsTask<K,V,U> |
5863 |
+ |
extends BulkTask<K,V,U> { |
5864 |
+ |
final BiFun<? super K, ? super V, ? extends U> transformer; |
5865 |
+ |
final BiFun<? super U, ? super U, ? extends U> reducer; |
5866 |
+ |
U result; |
5867 |
+ |
MapReduceMappingsTask<K,V,U> rights, nextRight; |
5868 |
+ |
MapReduceMappingsTask |
5869 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5870 |
+ |
BiFun<? super K, ? super V, ? extends U> transformer, |
5871 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
5872 |
+ |
super(m); |
5873 |
+ |
this.transformer = transformer; |
5874 |
+ |
this.reducer = reducer; |
5875 |
+ |
} |
5876 |
+ |
MapReduceMappingsTask |
5877 |
+ |
(BulkTask<K,V,?> p, int b, |
5878 |
+ |
MapReduceMappingsTask<K,V,U> nextRight, |
5879 |
+ |
BiFun<? super K, ? super V, ? extends U> transformer, |
5880 |
+ |
BiFun<? super U, ? super U, ? extends U> reducer) { |
5881 |
+ |
super(p, b); this.nextRight = nextRight; |
5882 |
+ |
this.transformer = transformer; |
5883 |
+ |
this.reducer = reducer; |
5884 |
+ |
} |
5885 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5886 |
+ |
final BiFun<? super K, ? super V, ? extends U> transformer = |
5887 |
+ |
this.transformer; |
5888 |
+ |
final BiFun<? super U, ? super U, ? extends U> reducer = |
5889 |
+ |
this.reducer; |
5890 |
+ |
if (transformer == null || reducer == null) |
5891 |
+ |
return abortOnNullFunction(); |
5892 |
+ |
try { |
5893 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
5894 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5895 |
+ |
(rights = new MapReduceMappingsTask<K,V,U> |
5896 |
+ |
(this, b >>>= 1, rights, transformer, reducer)).fork(); |
5897 |
+ |
} |
5898 |
+ |
U r = null, u; |
5899 |
+ |
Object v; |
5900 |
+ |
while ((v = advance()) != null) { |
5901 |
+ |
if ((u = transformer.apply((K)nextKey, (V)v)) != null) |
5902 |
+ |
r = (r == null) ? u : reducer.apply(r, u); |
5903 |
+ |
} |
5904 |
+ |
result = r; |
5905 |
+ |
for (MapReduceMappingsTask<K,V,U> t = this, s;;) { |
5906 |
+ |
int c; BulkTask<K,V,?> par; U tr, sr; |
5907 |
+ |
if ((c = t.pending) == 0) { |
5908 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
5909 |
+ |
if ((sr = s.result) != null) |
5910 |
+ |
t.result = (tr = t.result) == null? sr : reducer.apply(tr, sr); |
5911 |
+ |
} |
5912 |
+ |
if ((par = t.parent) == null || |
5913 |
+ |
!(par instanceof MapReduceMappingsTask)) { |
5914 |
+ |
t.quietlyComplete(); |
5915 |
+ |
break; |
5916 |
+ |
} |
5917 |
+ |
t = (MapReduceMappingsTask<K,V,U>)par; |
5918 |
+ |
} |
5919 |
+ |
else if (t.casPending(c, c - 1)) |
5920 |
+ |
break; |
5921 |
+ |
} |
5922 |
+ |
} catch (Throwable ex) { |
5923 |
+ |
return tryCompleteComputation(ex); |
5924 |
+ |
} |
5925 |
+ |
return false; |
5926 |
+ |
} |
5927 |
+ |
public final U getRawResult() { return result; } |
5928 |
+ |
} |
5929 |
+ |
|
5930 |
+ |
@SuppressWarnings("serial") static final class MapReduceKeysToDoubleTask<K,V> |
5931 |
+ |
extends BulkTask<K,V,Double> { |
5932 |
+ |
final ObjectToDouble<? super K> transformer; |
5933 |
+ |
final DoubleByDoubleToDouble reducer; |
5934 |
+ |
final double basis; |
5935 |
+ |
double result; |
5936 |
+ |
MapReduceKeysToDoubleTask<K,V> rights, nextRight; |
5937 |
+ |
MapReduceKeysToDoubleTask |
5938 |
+ |
(ConcurrentHashMapV8<K,V> m, |
5939 |
+ |
ObjectToDouble<? super K> transformer, |
5940 |
+ |
double basis, |
5941 |
+ |
DoubleByDoubleToDouble reducer) { |
5942 |
+ |
super(m); |
5943 |
+ |
this.transformer = transformer; |
5944 |
+ |
this.basis = basis; this.reducer = reducer; |
5945 |
+ |
} |
5946 |
+ |
MapReduceKeysToDoubleTask |
5947 |
+ |
(BulkTask<K,V,?> p, int b, |
5948 |
+ |
MapReduceKeysToDoubleTask<K,V> nextRight, |
5949 |
+ |
ObjectToDouble<? super K> transformer, |
5950 |
+ |
double basis, |
5951 |
+ |
DoubleByDoubleToDouble reducer) { |
5952 |
+ |
super(p, b); this.nextRight = nextRight; |
5953 |
+ |
this.transformer = transformer; |
5954 |
+ |
this.basis = basis; this.reducer = reducer; |
5955 |
+ |
} |
5956 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
5957 |
+ |
final ObjectToDouble<? super K> transformer = |
5958 |
+ |
this.transformer; |
5959 |
+ |
final DoubleByDoubleToDouble reducer = this.reducer; |
5960 |
+ |
if (transformer == null || reducer == null) |
5961 |
+ |
return abortOnNullFunction(); |
5962 |
+ |
try { |
5963 |
+ |
final double id = this.basis; |
5964 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
5965 |
+ |
do {} while (!casPending(c = pending, c+1)); |
5966 |
+ |
(rights = new MapReduceKeysToDoubleTask<K,V> |
5967 |
+ |
(this, b >>>= 1, rights, transformer, id, reducer)).fork(); |
5968 |
+ |
} |
5969 |
+ |
double r = id; |
5970 |
+ |
while (advance() != null) |
5971 |
+ |
r = reducer.apply(r, transformer.apply((K)nextKey)); |
5972 |
+ |
result = r; |
5973 |
+ |
for (MapReduceKeysToDoubleTask<K,V> t = this, s;;) { |
5974 |
+ |
int c; BulkTask<K,V,?> par; |
5975 |
+ |
if ((c = t.pending) == 0) { |
5976 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
5977 |
+ |
t.result = reducer.apply(t.result, s.result); |
5978 |
+ |
} |
5979 |
+ |
if ((par = t.parent) == null || |
5980 |
+ |
!(par instanceof MapReduceKeysToDoubleTask)) { |
5981 |
+ |
t.quietlyComplete(); |
5982 |
+ |
break; |
5983 |
+ |
} |
5984 |
+ |
t = (MapReduceKeysToDoubleTask<K,V>)par; |
5985 |
+ |
} |
5986 |
+ |
else if (t.casPending(c, c - 1)) |
5987 |
+ |
break; |
5988 |
+ |
} |
5989 |
+ |
} catch (Throwable ex) { |
5990 |
+ |
return tryCompleteComputation(ex); |
5991 |
+ |
} |
5992 |
+ |
return false; |
5993 |
+ |
} |
5994 |
+ |
public final Double getRawResult() { return result; } |
5995 |
+ |
} |
5996 |
+ |
|
5997 |
+ |
@SuppressWarnings("serial") static final class MapReduceValuesToDoubleTask<K,V> |
5998 |
+ |
extends BulkTask<K,V,Double> { |
5999 |
+ |
final ObjectToDouble<? super V> transformer; |
6000 |
+ |
final DoubleByDoubleToDouble reducer; |
6001 |
+ |
final double basis; |
6002 |
+ |
double result; |
6003 |
+ |
MapReduceValuesToDoubleTask<K,V> rights, nextRight; |
6004 |
+ |
MapReduceValuesToDoubleTask |
6005 |
+ |
(ConcurrentHashMapV8<K,V> m, |
6006 |
+ |
ObjectToDouble<? super V> transformer, |
6007 |
+ |
double basis, |
6008 |
+ |
DoubleByDoubleToDouble reducer) { |
6009 |
+ |
super(m); |
6010 |
+ |
this.transformer = transformer; |
6011 |
+ |
this.basis = basis; this.reducer = reducer; |
6012 |
+ |
} |
6013 |
+ |
MapReduceValuesToDoubleTask |
6014 |
+ |
(BulkTask<K,V,?> p, int b, |
6015 |
+ |
MapReduceValuesToDoubleTask<K,V> nextRight, |
6016 |
+ |
ObjectToDouble<? super V> transformer, |
6017 |
+ |
double basis, |
6018 |
+ |
DoubleByDoubleToDouble reducer) { |
6019 |
+ |
super(p, b); this.nextRight = nextRight; |
6020 |
+ |
this.transformer = transformer; |
6021 |
+ |
this.basis = basis; this.reducer = reducer; |
6022 |
+ |
} |
6023 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
6024 |
+ |
final ObjectToDouble<? super V> transformer = |
6025 |
+ |
this.transformer; |
6026 |
+ |
final DoubleByDoubleToDouble reducer = this.reducer; |
6027 |
+ |
if (transformer == null || reducer == null) |
6028 |
+ |
return abortOnNullFunction(); |
6029 |
+ |
try { |
6030 |
+ |
final double id = this.basis; |
6031 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
6032 |
+ |
do {} while (!casPending(c = pending, c+1)); |
6033 |
+ |
(rights = new MapReduceValuesToDoubleTask<K,V> |
6034 |
+ |
(this, b >>>= 1, rights, transformer, id, reducer)).fork(); |
6035 |
+ |
} |
6036 |
+ |
double r = id; |
6037 |
+ |
Object v; |
6038 |
+ |
while ((v = advance()) != null) |
6039 |
+ |
r = reducer.apply(r, transformer.apply((V)v)); |
6040 |
+ |
result = r; |
6041 |
+ |
for (MapReduceValuesToDoubleTask<K,V> t = this, s;;) { |
6042 |
+ |
int c; BulkTask<K,V,?> par; |
6043 |
+ |
if ((c = t.pending) == 0) { |
6044 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
6045 |
+ |
t.result = reducer.apply(t.result, s.result); |
6046 |
+ |
} |
6047 |
+ |
if ((par = t.parent) == null || |
6048 |
+ |
!(par instanceof MapReduceValuesToDoubleTask)) { |
6049 |
+ |
t.quietlyComplete(); |
6050 |
+ |
break; |
6051 |
+ |
} |
6052 |
+ |
t = (MapReduceValuesToDoubleTask<K,V>)par; |
6053 |
+ |
} |
6054 |
+ |
else if (t.casPending(c, c - 1)) |
6055 |
+ |
break; |
6056 |
+ |
} |
6057 |
+ |
} catch (Throwable ex) { |
6058 |
+ |
return tryCompleteComputation(ex); |
6059 |
+ |
} |
6060 |
+ |
return false; |
6061 |
+ |
} |
6062 |
+ |
public final Double getRawResult() { return result; } |
6063 |
+ |
} |
6064 |
+ |
|
6065 |
+ |
@SuppressWarnings("serial") static final class MapReduceEntriesToDoubleTask<K,V> |
6066 |
+ |
extends BulkTask<K,V,Double> { |
6067 |
+ |
final ObjectToDouble<Map.Entry<K,V>> transformer; |
6068 |
+ |
final DoubleByDoubleToDouble reducer; |
6069 |
+ |
final double basis; |
6070 |
+ |
double result; |
6071 |
+ |
MapReduceEntriesToDoubleTask<K,V> rights, nextRight; |
6072 |
+ |
MapReduceEntriesToDoubleTask |
6073 |
+ |
(ConcurrentHashMapV8<K,V> m, |
6074 |
+ |
ObjectToDouble<Map.Entry<K,V>> transformer, |
6075 |
+ |
double basis, |
6076 |
+ |
DoubleByDoubleToDouble reducer) { |
6077 |
+ |
super(m); |
6078 |
+ |
this.transformer = transformer; |
6079 |
+ |
this.basis = basis; this.reducer = reducer; |
6080 |
+ |
} |
6081 |
+ |
MapReduceEntriesToDoubleTask |
6082 |
+ |
(BulkTask<K,V,?> p, int b, |
6083 |
+ |
MapReduceEntriesToDoubleTask<K,V> nextRight, |
6084 |
+ |
ObjectToDouble<Map.Entry<K,V>> transformer, |
6085 |
+ |
double basis, |
6086 |
+ |
DoubleByDoubleToDouble reducer) { |
6087 |
+ |
super(p, b); this.nextRight = nextRight; |
6088 |
+ |
this.transformer = transformer; |
6089 |
+ |
this.basis = basis; this.reducer = reducer; |
6090 |
+ |
} |
6091 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
6092 |
+ |
final ObjectToDouble<Map.Entry<K,V>> transformer = |
6093 |
+ |
this.transformer; |
6094 |
+ |
final DoubleByDoubleToDouble reducer = this.reducer; |
6095 |
+ |
if (transformer == null || reducer == null) |
6096 |
+ |
return abortOnNullFunction(); |
6097 |
+ |
try { |
6098 |
+ |
final double id = this.basis; |
6099 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
6100 |
+ |
do {} while (!casPending(c = pending, c+1)); |
6101 |
+ |
(rights = new MapReduceEntriesToDoubleTask<K,V> |
6102 |
+ |
(this, b >>>= 1, rights, transformer, id, reducer)).fork(); |
6103 |
+ |
} |
6104 |
+ |
double r = id; |
6105 |
+ |
Object v; |
6106 |
+ |
while ((v = advance()) != null) |
6107 |
+ |
r = reducer.apply(r, transformer.apply(entryFor((K)nextKey, (V)v))); |
6108 |
+ |
result = r; |
6109 |
+ |
for (MapReduceEntriesToDoubleTask<K,V> t = this, s;;) { |
6110 |
+ |
int c; BulkTask<K,V,?> par; |
6111 |
+ |
if ((c = t.pending) == 0) { |
6112 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
6113 |
+ |
t.result = reducer.apply(t.result, s.result); |
6114 |
+ |
} |
6115 |
+ |
if ((par = t.parent) == null || |
6116 |
+ |
!(par instanceof MapReduceEntriesToDoubleTask)) { |
6117 |
+ |
t.quietlyComplete(); |
6118 |
+ |
break; |
6119 |
+ |
} |
6120 |
+ |
t = (MapReduceEntriesToDoubleTask<K,V>)par; |
6121 |
+ |
} |
6122 |
+ |
else if (t.casPending(c, c - 1)) |
6123 |
+ |
break; |
6124 |
+ |
} |
6125 |
+ |
} catch (Throwable ex) { |
6126 |
+ |
return tryCompleteComputation(ex); |
6127 |
+ |
} |
6128 |
+ |
return false; |
6129 |
+ |
} |
6130 |
+ |
public final Double getRawResult() { return result; } |
6131 |
+ |
} |
6132 |
+ |
|
6133 |
+ |
@SuppressWarnings("serial") static final class MapReduceMappingsToDoubleTask<K,V> |
6134 |
+ |
extends BulkTask<K,V,Double> { |
6135 |
+ |
final ObjectByObjectToDouble<? super K, ? super V> transformer; |
6136 |
+ |
final DoubleByDoubleToDouble reducer; |
6137 |
+ |
final double basis; |
6138 |
+ |
double result; |
6139 |
+ |
MapReduceMappingsToDoubleTask<K,V> rights, nextRight; |
6140 |
+ |
MapReduceMappingsToDoubleTask |
6141 |
+ |
(ConcurrentHashMapV8<K,V> m, |
6142 |
+ |
ObjectByObjectToDouble<? super K, ? super V> transformer, |
6143 |
+ |
double basis, |
6144 |
+ |
DoubleByDoubleToDouble reducer) { |
6145 |
+ |
super(m); |
6146 |
+ |
this.transformer = transformer; |
6147 |
+ |
this.basis = basis; this.reducer = reducer; |
6148 |
+ |
} |
6149 |
+ |
MapReduceMappingsToDoubleTask |
6150 |
+ |
(BulkTask<K,V,?> p, int b, |
6151 |
+ |
MapReduceMappingsToDoubleTask<K,V> nextRight, |
6152 |
+ |
ObjectByObjectToDouble<? super K, ? super V> transformer, |
6153 |
+ |
double basis, |
6154 |
+ |
DoubleByDoubleToDouble reducer) { |
6155 |
+ |
super(p, b); this.nextRight = nextRight; |
6156 |
+ |
this.transformer = transformer; |
6157 |
+ |
this.basis = basis; this.reducer = reducer; |
6158 |
+ |
} |
6159 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
6160 |
+ |
final ObjectByObjectToDouble<? super K, ? super V> transformer = |
6161 |
+ |
this.transformer; |
6162 |
+ |
final DoubleByDoubleToDouble reducer = this.reducer; |
6163 |
+ |
if (transformer == null || reducer == null) |
6164 |
+ |
return abortOnNullFunction(); |
6165 |
+ |
try { |
6166 |
+ |
final double id = this.basis; |
6167 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
6168 |
+ |
do {} while (!casPending(c = pending, c+1)); |
6169 |
+ |
(rights = new MapReduceMappingsToDoubleTask<K,V> |
6170 |
+ |
(this, b >>>= 1, rights, transformer, id, reducer)).fork(); |
6171 |
+ |
} |
6172 |
+ |
double r = id; |
6173 |
+ |
Object v; |
6174 |
+ |
while ((v = advance()) != null) |
6175 |
+ |
r = reducer.apply(r, transformer.apply((K)nextKey, (V)v)); |
6176 |
+ |
result = r; |
6177 |
+ |
for (MapReduceMappingsToDoubleTask<K,V> t = this, s;;) { |
6178 |
+ |
int c; BulkTask<K,V,?> par; |
6179 |
+ |
if ((c = t.pending) == 0) { |
6180 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
6181 |
+ |
t.result = reducer.apply(t.result, s.result); |
6182 |
+ |
} |
6183 |
+ |
if ((par = t.parent) == null || |
6184 |
+ |
!(par instanceof MapReduceMappingsToDoubleTask)) { |
6185 |
+ |
t.quietlyComplete(); |
6186 |
+ |
break; |
6187 |
+ |
} |
6188 |
+ |
t = (MapReduceMappingsToDoubleTask<K,V>)par; |
6189 |
+ |
} |
6190 |
+ |
else if (t.casPending(c, c - 1)) |
6191 |
+ |
break; |
6192 |
+ |
} |
6193 |
+ |
} catch (Throwable ex) { |
6194 |
+ |
return tryCompleteComputation(ex); |
6195 |
+ |
} |
6196 |
+ |
return false; |
6197 |
+ |
} |
6198 |
+ |
public final Double getRawResult() { return result; } |
6199 |
+ |
} |
6200 |
+ |
|
6201 |
+ |
@SuppressWarnings("serial") static final class MapReduceKeysToLongTask<K,V> |
6202 |
+ |
extends BulkTask<K,V,Long> { |
6203 |
+ |
final ObjectToLong<? super K> transformer; |
6204 |
+ |
final LongByLongToLong reducer; |
6205 |
+ |
final long basis; |
6206 |
+ |
long result; |
6207 |
+ |
MapReduceKeysToLongTask<K,V> rights, nextRight; |
6208 |
+ |
MapReduceKeysToLongTask |
6209 |
+ |
(ConcurrentHashMapV8<K,V> m, |
6210 |
+ |
ObjectToLong<? super K> transformer, |
6211 |
+ |
long basis, |
6212 |
+ |
LongByLongToLong reducer) { |
6213 |
+ |
super(m); |
6214 |
+ |
this.transformer = transformer; |
6215 |
+ |
this.basis = basis; this.reducer = reducer; |
6216 |
+ |
} |
6217 |
+ |
MapReduceKeysToLongTask |
6218 |
+ |
(BulkTask<K,V,?> p, int b, |
6219 |
+ |
MapReduceKeysToLongTask<K,V> nextRight, |
6220 |
+ |
ObjectToLong<? super K> transformer, |
6221 |
+ |
long basis, |
6222 |
+ |
LongByLongToLong reducer) { |
6223 |
+ |
super(p, b); this.nextRight = nextRight; |
6224 |
+ |
this.transformer = transformer; |
6225 |
+ |
this.basis = basis; this.reducer = reducer; |
6226 |
+ |
} |
6227 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
6228 |
+ |
final ObjectToLong<? super K> transformer = |
6229 |
+ |
this.transformer; |
6230 |
+ |
final LongByLongToLong reducer = this.reducer; |
6231 |
+ |
if (transformer == null || reducer == null) |
6232 |
+ |
return abortOnNullFunction(); |
6233 |
+ |
try { |
6234 |
+ |
final long id = this.basis; |
6235 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
6236 |
+ |
do {} while (!casPending(c = pending, c+1)); |
6237 |
+ |
(rights = new MapReduceKeysToLongTask<K,V> |
6238 |
+ |
(this, b >>>= 1, rights, transformer, id, reducer)).fork(); |
6239 |
+ |
} |
6240 |
+ |
long r = id; |
6241 |
+ |
while (advance() != null) |
6242 |
+ |
r = reducer.apply(r, transformer.apply((K)nextKey)); |
6243 |
+ |
result = r; |
6244 |
+ |
for (MapReduceKeysToLongTask<K,V> t = this, s;;) { |
6245 |
+ |
int c; BulkTask<K,V,?> par; |
6246 |
+ |
if ((c = t.pending) == 0) { |
6247 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
6248 |
+ |
t.result = reducer.apply(t.result, s.result); |
6249 |
+ |
} |
6250 |
+ |
if ((par = t.parent) == null || |
6251 |
+ |
!(par instanceof MapReduceKeysToLongTask)) { |
6252 |
+ |
t.quietlyComplete(); |
6253 |
+ |
break; |
6254 |
+ |
} |
6255 |
+ |
t = (MapReduceKeysToLongTask<K,V>)par; |
6256 |
+ |
} |
6257 |
+ |
else if (t.casPending(c, c - 1)) |
6258 |
+ |
break; |
6259 |
+ |
} |
6260 |
+ |
} catch (Throwable ex) { |
6261 |
+ |
return tryCompleteComputation(ex); |
6262 |
+ |
} |
6263 |
+ |
return false; |
6264 |
+ |
} |
6265 |
+ |
public final Long getRawResult() { return result; } |
6266 |
+ |
} |
6267 |
+ |
|
6268 |
+ |
@SuppressWarnings("serial") static final class MapReduceValuesToLongTask<K,V> |
6269 |
+ |
extends BulkTask<K,V,Long> { |
6270 |
+ |
final ObjectToLong<? super V> transformer; |
6271 |
+ |
final LongByLongToLong reducer; |
6272 |
+ |
final long basis; |
6273 |
+ |
long result; |
6274 |
+ |
MapReduceValuesToLongTask<K,V> rights, nextRight; |
6275 |
+ |
MapReduceValuesToLongTask |
6276 |
+ |
(ConcurrentHashMapV8<K,V> m, |
6277 |
+ |
ObjectToLong<? super V> transformer, |
6278 |
+ |
long basis, |
6279 |
+ |
LongByLongToLong reducer) { |
6280 |
+ |
super(m); |
6281 |
+ |
this.transformer = transformer; |
6282 |
+ |
this.basis = basis; this.reducer = reducer; |
6283 |
+ |
} |
6284 |
+ |
MapReduceValuesToLongTask |
6285 |
+ |
(BulkTask<K,V,?> p, int b, |
6286 |
+ |
MapReduceValuesToLongTask<K,V> nextRight, |
6287 |
+ |
ObjectToLong<? super V> transformer, |
6288 |
+ |
long basis, |
6289 |
+ |
LongByLongToLong reducer) { |
6290 |
+ |
super(p, b); this.nextRight = nextRight; |
6291 |
+ |
this.transformer = transformer; |
6292 |
+ |
this.basis = basis; this.reducer = reducer; |
6293 |
+ |
} |
6294 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
6295 |
+ |
final ObjectToLong<? super V> transformer = |
6296 |
+ |
this.transformer; |
6297 |
+ |
final LongByLongToLong reducer = this.reducer; |
6298 |
+ |
if (transformer == null || reducer == null) |
6299 |
+ |
return abortOnNullFunction(); |
6300 |
+ |
try { |
6301 |
+ |
final long id = this.basis; |
6302 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
6303 |
+ |
do {} while (!casPending(c = pending, c+1)); |
6304 |
+ |
(rights = new MapReduceValuesToLongTask<K,V> |
6305 |
+ |
(this, b >>>= 1, rights, transformer, id, reducer)).fork(); |
6306 |
+ |
} |
6307 |
+ |
long r = id; |
6308 |
+ |
Object v; |
6309 |
+ |
while ((v = advance()) != null) |
6310 |
+ |
r = reducer.apply(r, transformer.apply((V)v)); |
6311 |
+ |
result = r; |
6312 |
+ |
for (MapReduceValuesToLongTask<K,V> t = this, s;;) { |
6313 |
+ |
int c; BulkTask<K,V,?> par; |
6314 |
+ |
if ((c = t.pending) == 0) { |
6315 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
6316 |
+ |
t.result = reducer.apply(t.result, s.result); |
6317 |
+ |
} |
6318 |
+ |
if ((par = t.parent) == null || |
6319 |
+ |
!(par instanceof MapReduceValuesToLongTask)) { |
6320 |
+ |
t.quietlyComplete(); |
6321 |
+ |
break; |
6322 |
+ |
} |
6323 |
+ |
t = (MapReduceValuesToLongTask<K,V>)par; |
6324 |
+ |
} |
6325 |
+ |
else if (t.casPending(c, c - 1)) |
6326 |
+ |
break; |
6327 |
+ |
} |
6328 |
+ |
} catch (Throwable ex) { |
6329 |
+ |
return tryCompleteComputation(ex); |
6330 |
+ |
} |
6331 |
+ |
return false; |
6332 |
+ |
} |
6333 |
+ |
public final Long getRawResult() { return result; } |
6334 |
+ |
} |
6335 |
+ |
|
6336 |
+ |
@SuppressWarnings("serial") static final class MapReduceEntriesToLongTask<K,V> |
6337 |
+ |
extends BulkTask<K,V,Long> { |
6338 |
+ |
final ObjectToLong<Map.Entry<K,V>> transformer; |
6339 |
+ |
final LongByLongToLong reducer; |
6340 |
+ |
final long basis; |
6341 |
+ |
long result; |
6342 |
+ |
MapReduceEntriesToLongTask<K,V> rights, nextRight; |
6343 |
+ |
MapReduceEntriesToLongTask |
6344 |
+ |
(ConcurrentHashMapV8<K,V> m, |
6345 |
+ |
ObjectToLong<Map.Entry<K,V>> transformer, |
6346 |
+ |
long basis, |
6347 |
+ |
LongByLongToLong reducer) { |
6348 |
+ |
super(m); |
6349 |
+ |
this.transformer = transformer; |
6350 |
+ |
this.basis = basis; this.reducer = reducer; |
6351 |
+ |
} |
6352 |
+ |
MapReduceEntriesToLongTask |
6353 |
+ |
(BulkTask<K,V,?> p, int b, |
6354 |
+ |
MapReduceEntriesToLongTask<K,V> nextRight, |
6355 |
+ |
ObjectToLong<Map.Entry<K,V>> transformer, |
6356 |
+ |
long basis, |
6357 |
+ |
LongByLongToLong reducer) { |
6358 |
+ |
super(p, b); this.nextRight = nextRight; |
6359 |
+ |
this.transformer = transformer; |
6360 |
+ |
this.basis = basis; this.reducer = reducer; |
6361 |
+ |
} |
6362 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
6363 |
+ |
final ObjectToLong<Map.Entry<K,V>> transformer = |
6364 |
+ |
this.transformer; |
6365 |
+ |
final LongByLongToLong reducer = this.reducer; |
6366 |
+ |
if (transformer == null || reducer == null) |
6367 |
+ |
return abortOnNullFunction(); |
6368 |
+ |
try { |
6369 |
+ |
final long id = this.basis; |
6370 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
6371 |
+ |
do {} while (!casPending(c = pending, c+1)); |
6372 |
+ |
(rights = new MapReduceEntriesToLongTask<K,V> |
6373 |
+ |
(this, b >>>= 1, rights, transformer, id, reducer)).fork(); |
6374 |
+ |
} |
6375 |
+ |
long r = id; |
6376 |
+ |
Object v; |
6377 |
+ |
while ((v = advance()) != null) |
6378 |
+ |
r = reducer.apply(r, transformer.apply(entryFor((K)nextKey, (V)v))); |
6379 |
+ |
result = r; |
6380 |
+ |
for (MapReduceEntriesToLongTask<K,V> t = this, s;;) { |
6381 |
+ |
int c; BulkTask<K,V,?> par; |
6382 |
+ |
if ((c = t.pending) == 0) { |
6383 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
6384 |
+ |
t.result = reducer.apply(t.result, s.result); |
6385 |
+ |
} |
6386 |
+ |
if ((par = t.parent) == null || |
6387 |
+ |
!(par instanceof MapReduceEntriesToLongTask)) { |
6388 |
+ |
t.quietlyComplete(); |
6389 |
+ |
break; |
6390 |
+ |
} |
6391 |
+ |
t = (MapReduceEntriesToLongTask<K,V>)par; |
6392 |
+ |
} |
6393 |
+ |
else if (t.casPending(c, c - 1)) |
6394 |
+ |
break; |
6395 |
+ |
} |
6396 |
+ |
} catch (Throwable ex) { |
6397 |
+ |
return tryCompleteComputation(ex); |
6398 |
+ |
} |
6399 |
+ |
return false; |
6400 |
+ |
} |
6401 |
+ |
public final Long getRawResult() { return result; } |
6402 |
+ |
} |
6403 |
+ |
|
6404 |
+ |
@SuppressWarnings("serial") static final class MapReduceMappingsToLongTask<K,V> |
6405 |
+ |
extends BulkTask<K,V,Long> { |
6406 |
+ |
final ObjectByObjectToLong<? super K, ? super V> transformer; |
6407 |
+ |
final LongByLongToLong reducer; |
6408 |
+ |
final long basis; |
6409 |
+ |
long result; |
6410 |
+ |
MapReduceMappingsToLongTask<K,V> rights, nextRight; |
6411 |
+ |
MapReduceMappingsToLongTask |
6412 |
+ |
(ConcurrentHashMapV8<K,V> m, |
6413 |
+ |
ObjectByObjectToLong<? super K, ? super V> transformer, |
6414 |
+ |
long basis, |
6415 |
+ |
LongByLongToLong reducer) { |
6416 |
+ |
super(m); |
6417 |
+ |
this.transformer = transformer; |
6418 |
+ |
this.basis = basis; this.reducer = reducer; |
6419 |
+ |
} |
6420 |
+ |
MapReduceMappingsToLongTask |
6421 |
+ |
(BulkTask<K,V,?> p, int b, |
6422 |
+ |
MapReduceMappingsToLongTask<K,V> nextRight, |
6423 |
+ |
ObjectByObjectToLong<? super K, ? super V> transformer, |
6424 |
+ |
long basis, |
6425 |
+ |
LongByLongToLong reducer) { |
6426 |
+ |
super(p, b); this.nextRight = nextRight; |
6427 |
+ |
this.transformer = transformer; |
6428 |
+ |
this.basis = basis; this.reducer = reducer; |
6429 |
+ |
} |
6430 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
6431 |
+ |
final ObjectByObjectToLong<? super K, ? super V> transformer = |
6432 |
+ |
this.transformer; |
6433 |
+ |
final LongByLongToLong reducer = this.reducer; |
6434 |
+ |
if (transformer == null || reducer == null) |
6435 |
+ |
return abortOnNullFunction(); |
6436 |
+ |
try { |
6437 |
+ |
final long id = this.basis; |
6438 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
6439 |
+ |
do {} while (!casPending(c = pending, c+1)); |
6440 |
+ |
(rights = new MapReduceMappingsToLongTask<K,V> |
6441 |
+ |
(this, b >>>= 1, rights, transformer, id, reducer)).fork(); |
6442 |
+ |
} |
6443 |
+ |
long r = id; |
6444 |
+ |
Object v; |
6445 |
+ |
while ((v = advance()) != null) |
6446 |
+ |
r = reducer.apply(r, transformer.apply((K)nextKey, (V)v)); |
6447 |
+ |
result = r; |
6448 |
+ |
for (MapReduceMappingsToLongTask<K,V> t = this, s;;) { |
6449 |
+ |
int c; BulkTask<K,V,?> par; |
6450 |
+ |
if ((c = t.pending) == 0) { |
6451 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
6452 |
+ |
t.result = reducer.apply(t.result, s.result); |
6453 |
+ |
} |
6454 |
+ |
if ((par = t.parent) == null || |
6455 |
+ |
!(par instanceof MapReduceMappingsToLongTask)) { |
6456 |
+ |
t.quietlyComplete(); |
6457 |
+ |
break; |
6458 |
+ |
} |
6459 |
+ |
t = (MapReduceMappingsToLongTask<K,V>)par; |
6460 |
+ |
} |
6461 |
+ |
else if (t.casPending(c, c - 1)) |
6462 |
+ |
break; |
6463 |
+ |
} |
6464 |
+ |
} catch (Throwable ex) { |
6465 |
+ |
return tryCompleteComputation(ex); |
6466 |
+ |
} |
6467 |
+ |
return false; |
6468 |
+ |
} |
6469 |
+ |
public final Long getRawResult() { return result; } |
6470 |
+ |
} |
6471 |
+ |
|
6472 |
+ |
@SuppressWarnings("serial") static final class MapReduceKeysToIntTask<K,V> |
6473 |
+ |
extends BulkTask<K,V,Integer> { |
6474 |
+ |
final ObjectToInt<? super K> transformer; |
6475 |
+ |
final IntByIntToInt reducer; |
6476 |
+ |
final int basis; |
6477 |
+ |
int result; |
6478 |
+ |
MapReduceKeysToIntTask<K,V> rights, nextRight; |
6479 |
+ |
MapReduceKeysToIntTask |
6480 |
+ |
(ConcurrentHashMapV8<K,V> m, |
6481 |
+ |
ObjectToInt<? super K> transformer, |
6482 |
+ |
int basis, |
6483 |
+ |
IntByIntToInt reducer) { |
6484 |
+ |
super(m); |
6485 |
+ |
this.transformer = transformer; |
6486 |
+ |
this.basis = basis; this.reducer = reducer; |
6487 |
+ |
} |
6488 |
+ |
MapReduceKeysToIntTask |
6489 |
+ |
(BulkTask<K,V,?> p, int b, |
6490 |
+ |
MapReduceKeysToIntTask<K,V> nextRight, |
6491 |
+ |
ObjectToInt<? super K> transformer, |
6492 |
+ |
int basis, |
6493 |
+ |
IntByIntToInt reducer) { |
6494 |
+ |
super(p, b); this.nextRight = nextRight; |
6495 |
+ |
this.transformer = transformer; |
6496 |
+ |
this.basis = basis; this.reducer = reducer; |
6497 |
+ |
} |
6498 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
6499 |
+ |
final ObjectToInt<? super K> transformer = |
6500 |
+ |
this.transformer; |
6501 |
+ |
final IntByIntToInt reducer = this.reducer; |
6502 |
+ |
if (transformer == null || reducer == null) |
6503 |
+ |
return abortOnNullFunction(); |
6504 |
+ |
try { |
6505 |
+ |
final int id = this.basis; |
6506 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
6507 |
+ |
do {} while (!casPending(c = pending, c+1)); |
6508 |
+ |
(rights = new MapReduceKeysToIntTask<K,V> |
6509 |
+ |
(this, b >>>= 1, rights, transformer, id, reducer)).fork(); |
6510 |
+ |
} |
6511 |
+ |
int r = id; |
6512 |
+ |
while (advance() != null) |
6513 |
+ |
r = reducer.apply(r, transformer.apply((K)nextKey)); |
6514 |
+ |
result = r; |
6515 |
+ |
for (MapReduceKeysToIntTask<K,V> t = this, s;;) { |
6516 |
+ |
int c; BulkTask<K,V,?> par; |
6517 |
+ |
if ((c = t.pending) == 0) { |
6518 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
6519 |
+ |
t.result = reducer.apply(t.result, s.result); |
6520 |
+ |
} |
6521 |
+ |
if ((par = t.parent) == null || |
6522 |
+ |
!(par instanceof MapReduceKeysToIntTask)) { |
6523 |
+ |
t.quietlyComplete(); |
6524 |
+ |
break; |
6525 |
+ |
} |
6526 |
+ |
t = (MapReduceKeysToIntTask<K,V>)par; |
6527 |
+ |
} |
6528 |
+ |
else if (t.casPending(c, c - 1)) |
6529 |
+ |
break; |
6530 |
+ |
} |
6531 |
+ |
} catch (Throwable ex) { |
6532 |
+ |
return tryCompleteComputation(ex); |
6533 |
+ |
} |
6534 |
+ |
return false; |
6535 |
+ |
} |
6536 |
+ |
public final Integer getRawResult() { return result; } |
6537 |
+ |
} |
6538 |
+ |
|
6539 |
+ |
@SuppressWarnings("serial") static final class MapReduceValuesToIntTask<K,V> |
6540 |
+ |
extends BulkTask<K,V,Integer> { |
6541 |
+ |
final ObjectToInt<? super V> transformer; |
6542 |
+ |
final IntByIntToInt reducer; |
6543 |
+ |
final int basis; |
6544 |
+ |
int result; |
6545 |
+ |
MapReduceValuesToIntTask<K,V> rights, nextRight; |
6546 |
+ |
MapReduceValuesToIntTask |
6547 |
+ |
(ConcurrentHashMapV8<K,V> m, |
6548 |
+ |
ObjectToInt<? super V> transformer, |
6549 |
+ |
int basis, |
6550 |
+ |
IntByIntToInt reducer) { |
6551 |
+ |
super(m); |
6552 |
+ |
this.transformer = transformer; |
6553 |
+ |
this.basis = basis; this.reducer = reducer; |
6554 |
+ |
} |
6555 |
+ |
MapReduceValuesToIntTask |
6556 |
+ |
(BulkTask<K,V,?> p, int b, |
6557 |
+ |
MapReduceValuesToIntTask<K,V> nextRight, |
6558 |
+ |
ObjectToInt<? super V> transformer, |
6559 |
+ |
int basis, |
6560 |
+ |
IntByIntToInt reducer) { |
6561 |
+ |
super(p, b); this.nextRight = nextRight; |
6562 |
+ |
this.transformer = transformer; |
6563 |
+ |
this.basis = basis; this.reducer = reducer; |
6564 |
+ |
} |
6565 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
6566 |
+ |
final ObjectToInt<? super V> transformer = |
6567 |
+ |
this.transformer; |
6568 |
+ |
final IntByIntToInt reducer = this.reducer; |
6569 |
+ |
if (transformer == null || reducer == null) |
6570 |
+ |
return abortOnNullFunction(); |
6571 |
+ |
try { |
6572 |
+ |
final int id = this.basis; |
6573 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
6574 |
+ |
do {} while (!casPending(c = pending, c+1)); |
6575 |
+ |
(rights = new MapReduceValuesToIntTask<K,V> |
6576 |
+ |
(this, b >>>= 1, rights, transformer, id, reducer)).fork(); |
6577 |
+ |
} |
6578 |
+ |
int r = id; |
6579 |
+ |
Object v; |
6580 |
+ |
while ((v = advance()) != null) |
6581 |
+ |
r = reducer.apply(r, transformer.apply((V)v)); |
6582 |
+ |
result = r; |
6583 |
+ |
for (MapReduceValuesToIntTask<K,V> t = this, s;;) { |
6584 |
+ |
int c; BulkTask<K,V,?> par; |
6585 |
+ |
if ((c = t.pending) == 0) { |
6586 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
6587 |
+ |
t.result = reducer.apply(t.result, s.result); |
6588 |
+ |
} |
6589 |
+ |
if ((par = t.parent) == null || |
6590 |
+ |
!(par instanceof MapReduceValuesToIntTask)) { |
6591 |
+ |
t.quietlyComplete(); |
6592 |
+ |
break; |
6593 |
+ |
} |
6594 |
+ |
t = (MapReduceValuesToIntTask<K,V>)par; |
6595 |
+ |
} |
6596 |
+ |
else if (t.casPending(c, c - 1)) |
6597 |
+ |
break; |
6598 |
+ |
} |
6599 |
+ |
} catch (Throwable ex) { |
6600 |
+ |
return tryCompleteComputation(ex); |
6601 |
+ |
} |
6602 |
+ |
return false; |
6603 |
+ |
} |
6604 |
+ |
public final Integer getRawResult() { return result; } |
6605 |
+ |
} |
6606 |
+ |
|
6607 |
+ |
@SuppressWarnings("serial") static final class MapReduceEntriesToIntTask<K,V> |
6608 |
+ |
extends BulkTask<K,V,Integer> { |
6609 |
+ |
final ObjectToInt<Map.Entry<K,V>> transformer; |
6610 |
+ |
final IntByIntToInt reducer; |
6611 |
+ |
final int basis; |
6612 |
+ |
int result; |
6613 |
+ |
MapReduceEntriesToIntTask<K,V> rights, nextRight; |
6614 |
+ |
MapReduceEntriesToIntTask |
6615 |
+ |
(ConcurrentHashMapV8<K,V> m, |
6616 |
+ |
ObjectToInt<Map.Entry<K,V>> transformer, |
6617 |
+ |
int basis, |
6618 |
+ |
IntByIntToInt reducer) { |
6619 |
+ |
super(m); |
6620 |
+ |
this.transformer = transformer; |
6621 |
+ |
this.basis = basis; this.reducer = reducer; |
6622 |
+ |
} |
6623 |
+ |
MapReduceEntriesToIntTask |
6624 |
+ |
(BulkTask<K,V,?> p, int b, |
6625 |
+ |
MapReduceEntriesToIntTask<K,V> nextRight, |
6626 |
+ |
ObjectToInt<Map.Entry<K,V>> transformer, |
6627 |
+ |
int basis, |
6628 |
+ |
IntByIntToInt reducer) { |
6629 |
+ |
super(p, b); this.nextRight = nextRight; |
6630 |
+ |
this.transformer = transformer; |
6631 |
+ |
this.basis = basis; this.reducer = reducer; |
6632 |
+ |
} |
6633 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
6634 |
+ |
final ObjectToInt<Map.Entry<K,V>> transformer = |
6635 |
+ |
this.transformer; |
6636 |
+ |
final IntByIntToInt reducer = this.reducer; |
6637 |
+ |
if (transformer == null || reducer == null) |
6638 |
+ |
return abortOnNullFunction(); |
6639 |
+ |
try { |
6640 |
+ |
final int id = this.basis; |
6641 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
6642 |
+ |
do {} while (!casPending(c = pending, c+1)); |
6643 |
+ |
(rights = new MapReduceEntriesToIntTask<K,V> |
6644 |
+ |
(this, b >>>= 1, rights, transformer, id, reducer)).fork(); |
6645 |
+ |
} |
6646 |
+ |
int r = id; |
6647 |
+ |
Object v; |
6648 |
+ |
while ((v = advance()) != null) |
6649 |
+ |
r = reducer.apply(r, transformer.apply(entryFor((K)nextKey, (V)v))); |
6650 |
+ |
result = r; |
6651 |
+ |
for (MapReduceEntriesToIntTask<K,V> t = this, s;;) { |
6652 |
+ |
int c; BulkTask<K,V,?> par; |
6653 |
+ |
if ((c = t.pending) == 0) { |
6654 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
6655 |
+ |
t.result = reducer.apply(t.result, s.result); |
6656 |
+ |
} |
6657 |
+ |
if ((par = t.parent) == null || |
6658 |
+ |
!(par instanceof MapReduceEntriesToIntTask)) { |
6659 |
+ |
t.quietlyComplete(); |
6660 |
+ |
break; |
6661 |
+ |
} |
6662 |
+ |
t = (MapReduceEntriesToIntTask<K,V>)par; |
6663 |
+ |
} |
6664 |
+ |
else if (t.casPending(c, c - 1)) |
6665 |
+ |
break; |
6666 |
+ |
} |
6667 |
+ |
} catch (Throwable ex) { |
6668 |
+ |
return tryCompleteComputation(ex); |
6669 |
+ |
} |
6670 |
+ |
return false; |
6671 |
+ |
} |
6672 |
+ |
public final Integer getRawResult() { return result; } |
6673 |
+ |
} |
6674 |
+ |
|
6675 |
+ |
@SuppressWarnings("serial") static final class MapReduceMappingsToIntTask<K,V> |
6676 |
+ |
extends BulkTask<K,V,Integer> { |
6677 |
+ |
final ObjectByObjectToInt<? super K, ? super V> transformer; |
6678 |
+ |
final IntByIntToInt reducer; |
6679 |
+ |
final int basis; |
6680 |
+ |
int result; |
6681 |
+ |
MapReduceMappingsToIntTask<K,V> rights, nextRight; |
6682 |
+ |
MapReduceMappingsToIntTask |
6683 |
+ |
(ConcurrentHashMapV8<K,V> m, |
6684 |
+ |
ObjectByObjectToInt<? super K, ? super V> transformer, |
6685 |
+ |
int basis, |
6686 |
+ |
IntByIntToInt reducer) { |
6687 |
+ |
super(m); |
6688 |
+ |
this.transformer = transformer; |
6689 |
+ |
this.basis = basis; this.reducer = reducer; |
6690 |
+ |
} |
6691 |
+ |
MapReduceMappingsToIntTask |
6692 |
+ |
(BulkTask<K,V,?> p, int b, |
6693 |
+ |
MapReduceMappingsToIntTask<K,V> nextRight, |
6694 |
+ |
ObjectByObjectToInt<? super K, ? super V> transformer, |
6695 |
+ |
int basis, |
6696 |
+ |
IntByIntToInt reducer) { |
6697 |
+ |
super(p, b); this.nextRight = nextRight; |
6698 |
+ |
this.transformer = transformer; |
6699 |
+ |
this.basis = basis; this.reducer = reducer; |
6700 |
+ |
} |
6701 |
+ |
@SuppressWarnings("unchecked") public final boolean exec() { |
6702 |
+ |
final ObjectByObjectToInt<? super K, ? super V> transformer = |
6703 |
+ |
this.transformer; |
6704 |
+ |
final IntByIntToInt reducer = this.reducer; |
6705 |
+ |
if (transformer == null || reducer == null) |
6706 |
+ |
return abortOnNullFunction(); |
6707 |
+ |
try { |
6708 |
+ |
final int id = this.basis; |
6709 |
+ |
for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) { |
6710 |
+ |
do {} while (!casPending(c = pending, c+1)); |
6711 |
+ |
(rights = new MapReduceMappingsToIntTask<K,V> |
6712 |
+ |
(this, b >>>= 1, rights, transformer, id, reducer)).fork(); |
6713 |
+ |
} |
6714 |
+ |
int r = id; |
6715 |
+ |
Object v; |
6716 |
+ |
while ((v = advance()) != null) |
6717 |
+ |
r = reducer.apply(r, transformer.apply((K)nextKey, (V)v)); |
6718 |
+ |
result = r; |
6719 |
+ |
for (MapReduceMappingsToIntTask<K,V> t = this, s;;) { |
6720 |
+ |
int c; BulkTask<K,V,?> par; |
6721 |
+ |
if ((c = t.pending) == 0) { |
6722 |
+ |
for (s = t.rights; s != null; s = t.rights = s.nextRight) { |
6723 |
+ |
t.result = reducer.apply(t.result, s.result); |
6724 |
+ |
} |
6725 |
+ |
if ((par = t.parent) == null || |
6726 |
+ |
!(par instanceof MapReduceMappingsToIntTask)) { |
6727 |
+ |
t.quietlyComplete(); |
6728 |
+ |
break; |
6729 |
+ |
} |
6730 |
+ |
t = (MapReduceMappingsToIntTask<K,V>)par; |
6731 |
+ |
} |
6732 |
+ |
else if (t.casPending(c, c - 1)) |
6733 |
+ |
break; |
6734 |
+ |
} |
6735 |
+ |
} catch (Throwable ex) { |
6736 |
+ |
return tryCompleteComputation(ex); |
6737 |
+ |
} |
6738 |
+ |
return false; |
6739 |
+ |
} |
6740 |
+ |
public final Integer getRawResult() { return result; } |
6741 |
+ |
} |
6742 |
+ |
|
6743 |
+ |
|
6744 |
|
// Unsafe mechanics |
6745 |
|
private static final sun.misc.Unsafe UNSAFE; |
6746 |
|
private static final long counterOffset; |
6795 |
|
} |
6796 |
|
} |
6797 |
|
} |
3351 |
– |
|
6798 |
|
} |