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Comparing jsr166/src/jsr166e/ConcurrentHashMapV8.java (file contents):
Revision 1.69 by jsr166, Sun Oct 21 06:14:11 2012 UTC vs.
Revision 1.81 by dl, Sat Dec 8 14:10:38 2012 UTC

#	Line 5 | Line 5
5		*/
6
7		package jsr166e;
8	<	import jsr166e.LongAdder;
9	<	import jsr166e.ForkJoinPool;
10	<	import jsr166e.ForkJoinTask;
8	>
9	>	import java.util.Comparator;
10	>	import java.util.Arrays;
11	>	import java.util.Map;
12	>	import java.util.Set;
13	>	import java.util.Collection;
14	>	import java.util.AbstractMap;
15	>	import java.util.AbstractSet;
16	>	import java.util.AbstractCollection;
17	>	import java.util.Hashtable;
18	>	import java.util.HashMap;
19	>	import java.util.Iterator;
20	>	import java.util.Enumeration;
21	>	import java.util.ConcurrentModificationException;
22	>	import java.util.NoSuchElementException;
23	>	import java.util.concurrent.ConcurrentMap;
24	>	import java.util.concurrent.ThreadLocalRandom;
25	>	import java.util.concurrent.locks.LockSupport;
26	>	import java.util.concurrent.locks.AbstractQueuedSynchronizer;
27	>	import java.util.concurrent.atomic.AtomicReference;
28	>
29	>	import java.io.Serializable;
30
31		import java.util.Comparator;
32		import java.util.Arrays;
#	Line 43 | Line 62 | import java.io.Serializable;
62		* interoperable with {@code Hashtable} in programs that rely on its
63		* thread safety but not on its synchronization details.
64		*
65	<	* <p> Retrieval operations (including {@code get}) generally do not
65	>	* <p>Retrieval operations (including {@code get}) generally do not
66		* block, so may overlap with update operations (including {@code put}
67		* and {@code remove}). Retrievals reflect the results of the most
68		* recently <em>completed</em> update operations holding upon their
#	Line 64 | Line 83 | import java.io.Serializable;
83		* that may be adequate for monitoring or estimation purposes, but not
84		* for program control.
85		*
86	<	* <p> The table is dynamically expanded when there are too many
86	>	* <p>The table is dynamically expanded when there are too many
87		* collisions (i.e., keys that have distinct hash codes but fall into
88		* the same slot modulo the table size), with the expected average
89		* effect of maintaining roughly two bins per mapping (corresponding
#	Line 85 | Line 104 | import java.io.Serializable;
104		* {@code hashCode()} is a sure way to slow down performance of any
105		* hash table.
106		*
107	+	* <p>A {@link Set} projection of a ConcurrentHashMapV8 may be created
108	+	* (using {@link #newKeySet()} or {@link #newKeySet(int)}), or viewed
109	+	* (using {@link #keySet(Object)} when only keys are of interest, and the
110	+	* mapped values are (perhaps transiently) not used or all take the
111	+	* same mapping value.
112	+	*
113	+	* <p>A ConcurrentHashMapV8 can be used as scalable frequency map (a
114	+	* form of histogram or multiset) by using {@link LongAdder} values
115	+	* and initializing via {@link #computeIfAbsent}. For example, to add
116	+	* a count to a {@code ConcurrentHashMapV8<String,LongAdder> freqs}, you
117	+	* can use {@code freqs.computeIfAbsent(k -> new
118	+	* LongAdder()).increment();}
119	+	*
120		* <p>This class and its views and iterators implement all of the
121		* <em>optional</em> methods of the {@link Map} and {@link Iterator}
122		* interfaces.
123		*
124	<	* <p> Like {@link Hashtable} but unlike {@link HashMap}, this class
124	>	* <p>Like {@link Hashtable} but unlike {@link HashMap}, this class
125		* does <em>not</em> allow {@code null} to be used as a key or value.
126		*
127	+	* <p>ConcurrentHashMapV8s support parallel operations using the {@link
128	+	* ForkJoinPool#commonPool}. (Tasks that may be used in other contexts
129	+	* are available in class {@link ForkJoinTasks}). These operations are
130	+	* designed to be safely, and often sensibly, applied even with maps
131	+	* that are being concurrently updated by other threads; for example,
132	+	* when computing a snapshot summary of the values in a shared
133	+	* registry.  There are three kinds of operation, each with four
134	+	* forms, accepting functions with Keys, Values, Entries, and (Key,
135	+	* Value) arguments and/or return values. (The first three forms are
136	+	* also available via the {@link #keySet()}, {@link #values()} and
137	+	* {@link #entrySet()} views). Because the elements of a
138	+	* ConcurrentHashMapV8 are not ordered in any particular way, and may be
139	+	* processed in different orders in different parallel executions, the
140	+	* correctness of supplied functions should not depend on any
141	+	* ordering, or on any other objects or values that may transiently
142	+	* change while computation is in progress; and except for forEach
143	+	* actions, should ideally be side-effect-free.
144	+	*
145	+	* <ul>
146	+	* <li> forEach: Perform a given action on each element.
147	+	* A variant form applies a given transformation on each element
148	+	* before performing the action.</li>
149	+	*
150	+	* <li> search: Return the first available non-null result of
151	+	* applying a given function on each element; skipping further
152	+	* search when a result is found.</li>
153	+	*
154	+	* <li> reduce: Accumulate each element.  The supplied reduction
155	+	* function cannot rely on ordering (more formally, it should be
156	+	* both associative and commutative).  There are five variants:
157	+	*
158	+	* <ul>
159	+	*
160	+	* <li> Plain reductions. (There is not a form of this method for
161	+	* (key, value) function arguments since there is no corresponding
162	+	* return type.)</li>
163	+	*
164	+	* <li> Mapped reductions that accumulate the results of a given
165	+	* function applied to each element.</li>
166	+	*
167	+	* <li> Reductions to scalar doubles, longs, and ints, using a
168	+	* given basis value.</li>
169	+	*
170	+	* </li>
171	+	* </ul>
172	+	* </ul>
173	+	*
174	+	* <p>The concurrency properties of bulk operations follow
175	+	* from those of ConcurrentHashMapV8: Any non-null result returned
176	+	* from {@code get(key)} and related access methods bears a
177	+	* happens-before relation with the associated insertion or
178	+	* update.  The result of any bulk operation reflects the
179	+	* composition of these per-element relations (but is not
180	+	* necessarily atomic with respect to the map as a whole unless it
181	+	* is somehow known to be quiescent).  Conversely, because keys
182	+	* and values in the map are never null, null serves as a reliable
183	+	* atomic indicator of the current lack of any result.  To
184	+	* maintain this property, null serves as an implicit basis for
185	+	* all non-scalar reduction operations. For the double, long, and
186	+	* int versions, the basis should be one that, when combined with
187	+	* any other value, returns that other value (more formally, it
188	+	* should be the identity element for the reduction). Most common
189	+	* reductions have these properties; for example, computing a sum
190	+	* with basis 0 or a minimum with basis MAX_VALUE.
191	+	*
192	+	* <p>Search and transformation functions provided as arguments
193	+	* should similarly return null to indicate the lack of any result
194	+	* (in which case it is not used). In the case of mapped
195	+	* reductions, this also enables transformations to serve as
196	+	* filters, returning null (or, in the case of primitive
197	+	* specializations, the identity basis) if the element should not
198	+	* be combined. You can create compound transformations and
199	+	* filterings by composing them yourself under this "null means
200	+	* there is nothing there now" rule before using them in search or
201	+	* reduce operations.
202	+	*
203	+	* <p>Methods accepting and/or returning Entry arguments maintain
204	+	* key-value associations. They may be useful for example when
205	+	* finding the key for the greatest value. Note that "plain" Entry
206	+	* arguments can be supplied using {@code new
207	+	* AbstractMap.SimpleEntry(k,v)}.
208	+	*
209	+	* <p>Bulk operations may complete abruptly, throwing an
210	+	* exception encountered in the application of a supplied
211	+	* function. Bear in mind when handling such exceptions that other
212	+	* concurrently executing functions could also have thrown
213	+	* exceptions, or would have done so if the first exception had
214	+	* not occurred.
215	+	*
216	+	* <p>Parallel speedups for bulk operations compared to sequential
217	+	* processing are common but not guaranteed.  Operations involving
218	+	* brief functions on small maps may execute more slowly than
219	+	* sequential loops if the underlying work to parallelize the
220	+	* computation is more expensive than the computation itself.
221	+	* Similarly, parallelization may not lead to much actual parallelism
222	+	* if all processors are busy performing unrelated tasks.
223	+	*
224	+	* <p>All arguments to all task methods must be non-null.
225	+	*
226	+	* <p><em>jsr166e note: During transition, this class
227	+	* uses nested functional interfaces with different names but the
228	+	* same forms as those expected for JDK8.</em>
229	+	*
230		* <p>This class is a member of the
231		* <a href="{@docRoot}/../technotes/guides/collections/index.html">
232		* Java Collections Framework</a>.
233		*
99	–	* <p><em>jsr166e note: This class is a candidate replacement for
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	–	*
234		* @since 1.5
235		* @author Doug Lea
236		* @param <K> the type of keys maintained by this map
#	Line 117 | Line 247 | public class ConcurrentHashMapV8<K, V>
247		* portion of the elements, and so may be amenable to parallel
248		* execution.
249		*
250	<	* <p> This interface exports a subset of expected JDK8
250	>	* <p>This interface exports a subset of expected JDK8
251		* functionality.
252		*
253		* <p>Sample usage: Here is one (of the several) ways to compute
#	Line 179 | Line 309 | public class ConcurrentHashMapV8<K, V>
309		Spliterator<T> split();
310		}
311
312	+
313		/*
314		* Overview:
315		*
#	Line 461 | Line 592 | public class ConcurrentHashMapV8<K, V>
592		private transient volatile int sizeCtl;
593
594		// views
595	<	private transient KeySet<K,V> keySet;
596	<	private transient Values<K,V> values;
597	<	private transient EntrySet<K,V> entrySet;
595	>	private transient KeySetView<K,V> keySet;
596	>	private transient ValuesView<K,V> values;
597	>	private transient EntrySetView<K,V> entrySet;
598
599		/** For serialization compatibility. Null unless serialized; see below */
600		private Segment<K,V>[] segments;
#	Line 562 | Line 693 | public class ConcurrentHashMapV8<K, V>
693		try {
694		wait();
695		} catch (InterruptedException ie) {
696	<	Thread.currentThread().interrupt();
696	>	try {
697	>	Thread.currentThread().interrupt();
698	>	} catch (SecurityException ignore) {
699	>	}
700		}
701		}
702		else
#	Line 733 | Line 867 | public class ConcurrentHashMapV8<K, V>
867		if (c != (pc = pk.getClass()) ||
868		!(k instanceof Comparable) ||
869		(dir = ((Comparable)k).compareTo((Comparable)pk)) == 0) {
870	<	dir = (c == pc) ? 0 : c.getName().compareTo(pc.getName());
871	<	TreeNode r = null, s = null, pl, pr;
872	<	if (dir >= 0) {
873	<	if ((pl = p.left) != null && h <= pl.hash)
874	<	s = pl;
870	>	if ((dir = (c == pc) ? 0 :
871	>	c.getName().compareTo(pc.getName())) == 0) {
872	>	TreeNode r = null, pl, pr; // check both sides
873	>	if ((pr = p.right) != null && h >= pr.hash &&
874	>	(r = getTreeNode(h, k, pr)) != null)
875	>	return r;
876	>	else if ((pl = p.left) != null && h <= pl.hash)
877	>	dir = -1;
878	>	else // nothing there
879	>	return null;
880		}
742	–	else if ((pr = p.right) != null && h >= pr.hash)
743	–	s = pr;
744	–	if (s != null && (r = getTreeNode(h, k, s)) != null)
745	–	return r;
881		}
882		}
883		else
#	Line 797 | Line 932 | public class ConcurrentHashMapV8<K, V>
932		if (c != (pc = pk.getClass()) ||
933		!(k instanceof Comparable) ||
934		(dir = ((Comparable)k).compareTo((Comparable)pk)) == 0) {
935	<	dir = (c == pc) ? 0 : c.getName().compareTo(pc.getName());
936	<	TreeNode r = null, s = null, pl, pr;
937	<	if (dir >= 0) {
938	<	if ((pl = p.left) != null && h <= pl.hash)
939	<	s = pl;
935	>	TreeNode s = null, r = null, pr;
936	>	if ((dir = (c == pc) ? 0 :
937	>	c.getName().compareTo(pc.getName())) == 0) {
938	>	if ((pr = p.right) != null && h >= pr.hash &&
939	>	(r = getTreeNode(h, k, pr)) != null)
940	>	return r;
941	>	else // continue left
942	>	dir = -1;
943		}
944		else if ((pr = p.right) != null && h >= pr.hash)
945		s = pr;
#	Line 2243 | Line 2381 | public class ConcurrentHashMapV8<K, V>
2381		* change (including to null, indicating deletion), field nextVal
2382		* might not be accurate at point of use, but still maintains the
2383		* weak consistency property of holding a value that was once
2384	<	* valid.
2384	>	* valid. To support iterator.remove, the nextKey field is not
2385	>	* updated (nulled out) when the iterator cannot advance.
2386		*
2387		* Internal traversals directly access these fields, as in:
2388		* {@code while (it.advance() != null) { process(it.nextKey); }}
#	Line 2270 | Line 2409 | public class ConcurrentHashMapV8<K, V>
2409		* across threads, iteration terminates if a bounds checks fails
2410		* for a table read.
2411		*
2412	<	* This class extends ForkJoinTask to streamline parallel
2413	<	* iteration in bulk operations (see BulkTask). This adds only an
2414	<	* int of space overhead, which is close enough to negligible in
2415	<	* cases where it is not needed to not worry about it.  Because
2416	<	* ForkJoinTask is Serializable, but iterators need not be, we
2417	<	* need to add warning suppressions.
2412	>	* This class extends CountedCompleter to streamline parallel
2413	>	* iteration in bulk operations. This adds only a few fields of
2414	>	* space overhead, which is small enough in cases where it is not
2415	>	* needed to not worry about it.  Because CountedCompleter is
2416	>	* Serializable, but iterators need not be, we need to add warning
2417	>	* suppressions.
2418		*/
2419	<	@SuppressWarnings("serial") static class Traverser<K,V,R> extends ForkJoinTask<R> {
2419	>	@SuppressWarnings("serial") static class Traverser<K,V,R> extends CountedCompleter<R> {
2420		final ConcurrentHashMapV8<K, V> map;
2421		Node next;           // the next entry to use
2283	–	Node last;           // the last entry used
2422		Object nextKey;      // cached key field of next
2423		Object nextVal;      // cached val field of next
2424		Node[] tab;          // current table; updated if resized
#	Line 2288 | Line 2426 | public class ConcurrentHashMapV8<K, V>
2426		int baseIndex;       // current index of initial table
2427		int baseLimit;       // index bound for initial table
2428		int baseSize;        // initial table size
2429	+	int batch;           // split control
2430
2431		/** Creates iterator for all entries in the table. */
2432		Traverser(ConcurrentHashMapV8<K, V> map) {
2433		this.map = map;
2434		}
2435
2436	<	/** Creates iterator for split() methods */
2437	<	Traverser(Traverser<K,V,?> it) {
2438	<	ConcurrentHashMapV8<K, V> m; Node[] t;
2439	<	if ((m = this.map = it.map) == null)
2440	<	t = null;
2441	<	else if ((t = it.tab) == null && // force parent tab initialization
2442	<	(t = it.tab = m.table) != null)
2443	<	it.baseLimit = it.baseSize = t.length;
2444	<	this.tab = t;
2445	<	this.baseSize = it.baseSize;
2446	<	it.baseLimit = this.index = this.baseIndex =
2447	<	((this.baseLimit = it.baseLimit) + it.baseIndex + 1) >>> 1;
2436	>	/** Creates iterator for split() methods and task constructors */
2437	>	Traverser(ConcurrentHashMapV8<K,V> map, Traverser<K,V,?> it, int batch) {
2438	>	super(it);
2439	>	this.batch = batch;
2440	>	if ((this.map = map) != null && it != null) { // split parent
2441	>	Node[] t;
2442	>	if ((t = it.tab) == null &&
2443	>	(t = it.tab = map.table) != null)
2444	>	it.baseLimit = it.baseSize = t.length;
2445	>	this.tab = t;
2446	>	this.baseSize = it.baseSize;
2447	>	int hi = this.baseLimit = it.baseLimit;
2448	>	it.baseLimit = this.index = this.baseIndex =
2449	>	(hi + it.baseIndex + 1) >>> 1;
2450	>	}
2451		}
2452
2453		/**
#	Line 2313 | Line 2455 | public class ConcurrentHashMapV8<K, V>
2455		* See above for explanation.
2456		*/
2457		final Object advance() {
2458	<	Node e = last = next;
2458	>	Node e = next;
2459		Object ev = null;
2460		outer: do {
2461		if (e != null)                  // advance past used/skipped node
#	Line 2347 | Line 2489 | public class ConcurrentHashMapV8<K, V>
2489		}
2490
2491		public final void remove() {
2492	<	if (nextVal == null && last == null)
2493	<	advance();
2352	<	Node e = last;
2353	<	if (e == null)
2492	>	Object k = nextKey;
2493	>	if (k == null && (advance() == null || (k = nextKey) == null))
2494		throw new IllegalStateException();
2495	<	last = null;
2356	<	map.remove(e.key);
2495	>	map.internalReplace(k, null, null);
2496		}
2497
2498		public final boolean hasNext() {
#	Line 2361 | Line 2500 | public class ConcurrentHashMapV8<K, V>
2500		}
2501
2502		public final boolean hasMoreElements() { return hasNext(); }
2503	<	public final void setRawResult(Object x) { }
2504	<	public R getRawResult() { return null; }
2505	<	public boolean exec() { return true; }
2503	>
2504	>	public void compute() { } // default no-op CountedCompleter body
2505	>
2506	>	/**
2507	>	* Returns a batch value > 0 if this task should (and must) be
2508	>	* split, if so, adding to pending count, and in any case
2509	>	* updating batch value. The initial batch value is approx
2510	>	* exp2 of the number of times (minus one) to split task by
2511	>	* two before executing leaf action. This value is faster to
2512	>	* compute and more convenient to use as a guide to splitting
2513	>	* than is the depth, since it is used while dividing by two
2514	>	* anyway.
2515	>	*/
2516	>	final int preSplit() {
2517	>	ConcurrentHashMapV8<K, V> m; int b; Node[] t;  ForkJoinPool pool;
2518	>	if ((b = batch) < 0 && (m = map) != null) { // force initialization
2519	>	if ((t = tab) == null && (t = tab = m.table) != null)
2520	>	baseLimit = baseSize = t.length;
2521	>	if (t != null) {
2522	>	long n = m.counter.sum();
2523	>	int par = ((pool = getPool()) == null) ?
2524	>	ForkJoinPool.getCommonPoolParallelism() :
2525	>	pool.getParallelism();
2526	>	int sp = par << 3; // slack of 8
2527	>	b = (n <= 0L) ? 0 : (n < (long)sp) ? (int)n : sp;
2528	>	}
2529	>	}
2530	>	b = (b <= 1 || baseIndex == baseLimit) ? 0 : (b >>> 1);
2531	>	if ((batch = b) > 0)
2532	>	addToPendingCount(1);
2533	>	return b;
2534	>	}
2535	>
2536		}
2537
2538		/* ---------------- Public operations -------------- */
#	Line 2457 | Line 2626 | public class ConcurrentHashMapV8<K, V>
2626		}
2627
2628		/**
2629	+	* Creates a new {@link Set} backed by a ConcurrentHashMapV8
2630	+	* from the given type to {@code Boolean.TRUE}.
2631	+	*
2632	+	* @return the new set
2633	+	*/
2634	+	public static <K> KeySetView<K,Boolean> newKeySet() {
2635	+	return new KeySetView<K,Boolean>(new ConcurrentHashMapV8<K,Boolean>(),
2636	+	Boolean.TRUE);
2637	+	}
2638	+
2639	+	/**
2640	+	* Creates a new {@link Set} backed by a ConcurrentHashMapV8
2641	+	* from the given type to {@code Boolean.TRUE}.
2642	+	*
2643	+	* @param initialCapacity The implementation performs internal
2644	+	* sizing to accommodate this many elements.
2645	+	* @throws IllegalArgumentException if the initial capacity of
2646	+	* elements is negative
2647	+	* @return the new set
2648	+	*/
2649	+	public static <K> KeySetView<K,Boolean> newKeySet(int initialCapacity) {
2650	+	return new KeySetView<K,Boolean>(new ConcurrentHashMapV8<K,Boolean>(initialCapacity),
2651	+	Boolean.TRUE);
2652	+	}
2653	+
2654	+	/**
2655		* {@inheritDoc}
2656		*/
2657		public boolean isEmpty() {
#	Line 2475 | Line 2670 | public class ConcurrentHashMapV8<K, V>
2670
2671		/**
2672		* Returns the number of mappings. This method should be used
2673	<	* instead of {@link #size} because a ConcurrentHashMap may
2673	>	* instead of {@link #size} because a ConcurrentHashMapV8 may
2674		* contain more mappings than can be represented as an int. The
2675	<	* value returned is a snapshot; the actual count may differ if
2676	<	* there are ongoing concurrent insertions or removals.
2675	>	* value returned is an estimate; the actual count may differ if
2676	>	* there are concurrent insertions or removals.
2677		*
2678		* @return the number of mappings
2679		*/
#	Line 2581 | Line 2776 | public class ConcurrentHashMapV8<K, V>
2776		* Maps the specified key to the specified value in this table.
2777		* Neither the key nor the value can be null.
2778		*
2779	<	* <p> The value can be retrieved by calling the {@code get} method
2779	>	* <p>The value can be retrieved by calling the {@code get} method
2780		* with a key that is equal to the original key.
2781		*
2782		* @param key key with which the specified value is to be associated
#	Line 2848 | Line 3043 | public class ConcurrentHashMapV8<K, V>
3043		/**
3044		* Returns a {@link Set} view of the keys contained in this map.
3045		* The set is backed by the map, so changes to the map are
3046	<	* reflected in the set, and vice-versa.  The set supports element
2852	<	* removal, which removes the corresponding mapping from this map,
2853	<	* via the {@code Iterator.remove}, {@code Set.remove},
2854	<	* {@code removeAll}, {@code retainAll}, and {@code clear}
2855	<	* operations.  It does not support the {@code add} or
2856	<	* {@code addAll} operations.
3046	>	* reflected in the set, and vice-versa.
3047		*
3048	<	* <p>The view's {@code iterator} is a "weakly consistent" iterator
2859	<	* that will never throw {@link ConcurrentModificationException},
2860	<	* and guarantees to traverse elements as they existed upon
2861	<	* construction of the iterator, and may (but is not guaranteed to)
2862	<	* reflect any modifications subsequent to construction.
3048	>	* @return the set view
3049		*/
3050	<	public Set<K> keySet() {
3051	<	KeySet<K,V> ks = keySet;
3052	<	return (ks != null) ? ks : (keySet = new KeySet<K,V>(this));
3050	>	public KeySetView<K,V> keySet() {
3051	>	KeySetView<K,V> ks = keySet;
3052	>	return (ks != null) ? ks : (keySet = new KeySetView<K,V>(this, null));
3053	>	}
3054	>
3055	>	/**
3056	>	* Returns a {@link Set} view of the keys in this map, using the
3057	>	* given common mapped value for any additions (i.e., {@link
3058	>	* Collection#add} and {@link Collection#addAll}). This is of
3059	>	* course only appropriate if it is acceptable to use the same
3060	>	* value for all additions from this view.
3061	>	*
3062	>	* @param mappedValue the mapped value to use for any
3063	>	* additions.
3064	>	* @return the set view
3065	>	* @throws NullPointerException if the mappedValue is null
3066	>	*/
3067	>	public KeySetView<K,V> keySet(V mappedValue) {
3068	>	if (mappedValue == null)
3069	>	throw new NullPointerException();
3070	>	return new KeySetView<K,V>(this, mappedValue);
3071		}
3072
3073		/**
3074		* Returns a {@link Collection} view of the values contained in this map.
3075		* The collection is backed by the map, so changes to the map are
3076	<	* reflected in the collection, and vice-versa.  The collection
2873	<	* supports element removal, which removes the corresponding
2874	<	* mapping from this map, via the {@code Iterator.remove},
2875	<	* {@code Collection.remove}, {@code removeAll},
2876	<	* {@code retainAll}, and {@code clear} operations.  It does not
2877	<	* support the {@code add} or {@code addAll} operations.
2878	<	*
2879	<	* <p>The view's {@code iterator} is a "weakly consistent" iterator
2880	<	* that will never throw {@link ConcurrentModificationException},
2881	<	* and guarantees to traverse elements as they existed upon
2882	<	* construction of the iterator, and may (but is not guaranteed to)
2883	<	* reflect any modifications subsequent to construction.
3076	>	* reflected in the collection, and vice-versa.
3077		*/
3078	<	public Collection<V> values() {
3079	<	Values<K,V> vs = values;
3080	<	return (vs != null) ? vs : (values = new Values<K,V>(this));
3078	>	public ValuesView<K,V> values() {
3079	>	ValuesView<K,V> vs = values;
3080	>	return (vs != null) ? vs : (values = new ValuesView<K,V>(this));
3081		}
3082
3083		/**
#	Line 2904 | Line 3097 | public class ConcurrentHashMapV8<K, V>
3097		* reflect any modifications subsequent to construction.
3098		*/
3099		public Set<Map.Entry<K,V>> entrySet() {
3100	<	EntrySet<K,V> es = entrySet;
3101	<	return (es != null) ? es : (entrySet = new EntrySet<K,V>(this));
3100	>	EntrySetView<K,V> es = entrySet;
3101	>	return (es != null) ? es : (entrySet = new EntrySetView<K,V>(this));
3102		}
3103
3104		/**
#	Line 3041 | Line 3234 | public class ConcurrentHashMapV8<K, V>
3234		@SuppressWarnings("serial") static final class KeyIterator<K,V> extends Traverser<K,V,Object>
3235		implements Spliterator<K>, Enumeration<K> {
3236		KeyIterator(ConcurrentHashMapV8<K, V> map) { super(map); }
3237	<	KeyIterator(Traverser<K,V,Object> it) {
3238	<	super(it);
3237	>	KeyIterator(ConcurrentHashMapV8<K, V> map, Traverser<K,V,Object> it) {
3238	>	super(map, it, -1);
3239		}
3240		public KeyIterator<K,V> split() {
3241	<	if (last != null || (next != null && nextVal == null))
3241	>	if (nextKey != null)
3242		throw new IllegalStateException();
3243	<	return new KeyIterator<K,V>(this);
3243	>	return new KeyIterator<K,V>(map, this);
3244		}
3245		@SuppressWarnings("unchecked") public final K next() {
3246		if (nextVal == null && advance() == null)
#	Line 3063 | Line 3256 | public class ConcurrentHashMapV8<K, V>
3256		@SuppressWarnings("serial") static final class ValueIterator<K,V> extends Traverser<K,V,Object>
3257		implements Spliterator<V>, Enumeration<V> {
3258		ValueIterator(ConcurrentHashMapV8<K, V> map) { super(map); }
3259	<	ValueIterator(Traverser<K,V,Object> it) {
3260	<	super(it);
3259	>	ValueIterator(ConcurrentHashMapV8<K, V> map, Traverser<K,V,Object> it) {
3260	>	super(map, it, -1);
3261		}
3262		public ValueIterator<K,V> split() {
3263	<	if (last != null || (next != null && nextVal == null))
3263	>	if (nextKey != null)
3264		throw new IllegalStateException();
3265	<	return new ValueIterator<K,V>(this);
3265	>	return new ValueIterator<K,V>(map, this);
3266		}
3267
3268		@SuppressWarnings("unchecked") public final V next() {
#	Line 3086 | Line 3279 | public class ConcurrentHashMapV8<K, V>
3279		@SuppressWarnings("serial") static final class EntryIterator<K,V> extends Traverser<K,V,Object>
3280		implements Spliterator<Map.Entry<K,V>> {
3281		EntryIterator(ConcurrentHashMapV8<K, V> map) { super(map); }
3282	<	EntryIterator(Traverser<K,V,Object> it) {
3283	<	super(it);
3282	>	EntryIterator(ConcurrentHashMapV8<K, V> map, Traverser<K,V,Object> it) {
3283	>	super(map, it, -1);
3284		}
3285		public EntryIterator<K,V> split() {
3286	<	if (last != null || (next != null && nextVal == null))
3286	>	if (nextKey != null)
3287		throw new IllegalStateException();
3288	<	return new EntryIterator<K,V>(this);
3288	>	return new EntryIterator<K,V>(map, this);
3289		}
3290
3291		@SuppressWarnings("unchecked") public final Map.Entry<K,V> next() {
#	Line 3148 | Line 3341 | public class ConcurrentHashMapV8<K, V>
3341		}
3342		}
3343
3151	–	/* ----------------Views -------------- */
3152	–
3344		/**
3345	<	* Base class for views.
3345	>	* Returns exportable snapshot entry for the given key and value
3346	>	* when write-through can't or shouldn't be used.
3347		*/
3348	<	static abstract class CHMView<K, V> {
3349	<	final ConcurrentHashMapV8<K, V> map;
3158	<	CHMView(ConcurrentHashMapV8<K, V> map)  { this.map = map; }
3159	<	public final int size()                 { return map.size(); }
3160	<	public final boolean isEmpty()          { return map.isEmpty(); }
3161	<	public final void clear()               { map.clear(); }
3162	<
3163	<	// implementations below rely on concrete classes supplying these
3164	<	abstract public Iterator<?> iterator();
3165	<	abstract public boolean contains(Object o);
3166	<	abstract public boolean remove(Object o);
3167	<
3168	<	private static final String oomeMsg = "Required array size too large";
3169	<
3170	<	public final Object[] toArray() {
3171	<	long sz = map.mappingCount();
3172	<	if (sz > (long)(MAX_ARRAY_SIZE))
3173	<	throw new OutOfMemoryError(oomeMsg);
3174	<	int n = (int)sz;
3175	<	Object[] r = new Object[n];
3176	<	int i = 0;
3177	<	Iterator<?> it = iterator();
3178	<	while (it.hasNext()) {
3179	<	if (i == n) {
3180	<	if (n >= MAX_ARRAY_SIZE)
3181	<	throw new OutOfMemoryError(oomeMsg);
3182	<	if (n >= MAX_ARRAY_SIZE - (MAX_ARRAY_SIZE >>> 1) - 1)
3183	<	n = MAX_ARRAY_SIZE;
3184	<	else
3185	<	n += (n >>> 1) + 1;
3186	<	r = Arrays.copyOf(r, n);
3187	<	}
3188	<	r[i++] = it.next();
3189	<	}
3190	<	return (i == n) ? r : Arrays.copyOf(r, i);
3191	<	}
3192	<
3193	<	@SuppressWarnings("unchecked") public final <T> T[] toArray(T[] a) {
3194	<	long sz = map.mappingCount();
3195	<	if (sz > (long)(MAX_ARRAY_SIZE))
3196	<	throw new OutOfMemoryError(oomeMsg);
3197	<	int m = (int)sz;
3198	<	T[] r = (a.length >= m) ? a :
3199	<	(T[])java.lang.reflect.Array
3200	<	.newInstance(a.getClass().getComponentType(), m);
3201	<	int n = r.length;
3202	<	int i = 0;
3203	<	Iterator<?> it = iterator();
3204	<	while (it.hasNext()) {
3205	<	if (i == n) {
3206	<	if (n >= MAX_ARRAY_SIZE)
3207	<	throw new OutOfMemoryError(oomeMsg);
3208	<	if (n >= MAX_ARRAY_SIZE - (MAX_ARRAY_SIZE >>> 1) - 1)
3209	<	n = MAX_ARRAY_SIZE;
3210	<	else
3211	<	n += (n >>> 1) + 1;
3212	<	r = Arrays.copyOf(r, n);
3213	<	}
3214	<	r[i++] = (T)it.next();
3215	<	}
3216	<	if (a == r && i < n) {
3217	<	r[i] = null; // null-terminate
3218	<	return r;
3219	<	}
3220	<	return (i == n) ? r : Arrays.copyOf(r, i);
3221	<	}
3222	<
3223	<	public final int hashCode() {
3224	<	int h = 0;
3225	<	for (Iterator<?> it = iterator(); it.hasNext();)
3226	<	h += it.next().hashCode();
3227	<	return h;
3228	<	}
3229	<
3230	<	public final String toString() {
3231	<	StringBuilder sb = new StringBuilder();
3232	<	sb.append('[');
3233	<	Iterator<?> it = iterator();
3234	<	if (it.hasNext()) {
3235	<	for (;;) {
3236	<	Object e = it.next();
3237	<	sb.append(e == this ? "(this Collection)" : e);
3238	<	if (!it.hasNext())
3239	<	break;
3240	<	sb.append(',').append(' ');
3241	<	}
3242	<	}
3243	<	return sb.append(']').toString();
3244	<	}
3245	<
3246	<	public final boolean containsAll(Collection<?> c) {
3247	<	if (c != this) {
3248	<	for (Iterator<?> it = c.iterator(); it.hasNext();) {
3249	<	Object e = it.next();
3250	<	if (e == null || !contains(e))
3251	<	return false;
3252	<	}
3253	<	}
3254	<	return true;
3255	<	}
3256	<
3257	<	public final boolean removeAll(Collection<?> c) {
3258	<	boolean modified = false;
3259	<	for (Iterator<?> it = iterator(); it.hasNext();) {
3260	<	if (c.contains(it.next())) {
3261	<	it.remove();
3262	<	modified = true;
3263	<	}
3264	<	}
3265	<	return modified;
3266	<	}
3267	<
3268	<	public final boolean retainAll(Collection<?> c) {
3269	<	boolean modified = false;
3270	<	for (Iterator<?> it = iterator(); it.hasNext();) {
3271	<	if (!c.contains(it.next())) {
3272	<	it.remove();
3273	<	modified = true;
3274	<	}
3275	<	}
3276	<	return modified;
3277	<	}
3278	<
3279	<	}
3280	<
3281	<	static final class KeySet<K,V> extends CHMView<K,V> implements Set<K> {
3282	<	KeySet(ConcurrentHashMapV8<K, V> map)  {
3283	<	super(map);
3284	<	}
3285	<	public final boolean contains(Object o) { return map.containsKey(o); }
3286	<	public final boolean remove(Object o)   { return map.remove(o) != null; }
3287	<	public final Iterator<K> iterator() {
3288	<	return new KeyIterator<K,V>(map);
3289	<	}
3290	<	public final boolean add(K e) {
3291	<	throw new UnsupportedOperationException();
3292	<	}
3293	<	public final boolean addAll(Collection<? extends K> c) {
3294	<	throw new UnsupportedOperationException();
3295	<	}
3296	<	public boolean equals(Object o) {
3297	<	Set<?> c;
3298	<	return ((o instanceof Set) &&
3299	<	((c = (Set<?>)o) == this ||
3300	<	(containsAll(c) && c.containsAll(this))));
3301	<	}
3302	<	}
3303	<
3304	<
3305	<	static final class Values<K,V> extends CHMView<K,V>
3306	<	implements Collection<V> {
3307	<	Values(ConcurrentHashMapV8<K, V> map)   { super(map); }
3308	<	public final boolean contains(Object o) { return map.containsValue(o); }
3309	<	public final boolean remove(Object o) {
3310	<	if (o != null) {
3311	<	Iterator<V> it = new ValueIterator<K,V>(map);
3312	<	while (it.hasNext()) {
3313	<	if (o.equals(it.next())) {
3314	<	it.remove();
3315	<	return true;
3316	<	}
3317	<	}
3318	<	}
3319	<	return false;
3320	<	}
3321	<	public final Iterator<V> iterator() {
3322	<	return new ValueIterator<K,V>(map);
3323	<	}
3324	<	public final boolean add(V e) {
3325	<	throw new UnsupportedOperationException();
3326	<	}
3327	<	public final boolean addAll(Collection<? extends V> c) {
3328	<	throw new UnsupportedOperationException();
3329	<	}
3330	<
3331	<	}
3332	<
3333	<	static final class EntrySet<K,V> extends CHMView<K,V>
3334	<	implements Set<Map.Entry<K,V>> {
3335	<	EntrySet(ConcurrentHashMapV8<K, V> map) { super(map); }
3336	<	public final boolean contains(Object o) {
3337	<	Object k, v, r; Map.Entry<?,?> e;
3338	<	return ((o instanceof Map.Entry) &&
3339	<	(k = (e = (Map.Entry<?,?>)o).getKey()) != null &&
3340	<	(r = map.get(k)) != null &&
3341	<	(v = e.getValue()) != null &&
3342	<	(v == r || v.equals(r)));
3343	<	}
3344	<	public final boolean remove(Object o) {
3345	<	Object k, v; Map.Entry<?,?> e;
3346	<	return ((o instanceof Map.Entry) &&
3347	<	(k = (e = (Map.Entry<?,?>)o).getKey()) != null &&
3348	<	(v = e.getValue()) != null &&
3349	<	map.remove(k, v));
3350	<	}
3351	<	public final Iterator<Map.Entry<K,V>> iterator() {
3352	<	return new EntryIterator<K,V>(map);
3353	<	}
3354	<	public final boolean add(Entry<K,V> e) {
3355	<	throw new UnsupportedOperationException();
3356	<	}
3357	<	public final boolean addAll(Collection<? extends Entry<K,V>> c) {
3358	<	throw new UnsupportedOperationException();
3359	<	}
3360	<	public boolean equals(Object o) {
3361	<	Set<?> c;
3362	<	return ((o instanceof Set) &&
3363	<	((c = (Set<?>)o) == this ||
3364	<	(containsAll(c) && c.containsAll(this))));
3365	<	}
3348	>	static <K,V> AbstractMap.SimpleEntry<K,V> entryFor(K k, V v) {
3349	>	return new AbstractMap.SimpleEntry<K,V>(k, v);
3350		}
3351
3352		/* ---------------- Serialization Support -------------- */
#	Line 3531 | Line 3515 | public class ConcurrentHashMapV8<K, V>
3515		// -------------------------------------------------------
3516
3517		/**
3518	<	* Returns an extended {@link Parallel} view of this map using the
3535	<	* given executor for bulk parallel operations.
3518	>	* Performs the given action for each (key, value).
3519		*
3520	<	* @param executor the executor
3538	<	* @return a parallel view
3520	>	* @param action the action
3521		*/
3522	<	public Parallel parallel(ForkJoinPool executor)  {
3523	<	return new Parallel(executor);
3522	>	public void forEach(BiAction<K,V> action) {
3523	>	ForkJoinTasks.forEach
3524	>	(this, action).invoke();
3525		}
3526
3527		/**
3528	<	* An extended view of a ConcurrentHashMap supporting bulk
3529	<	* parallel operations. These operations are designed to be
3530	<	* safely, and often sensibly, applied even with maps that are
3531	<	* being concurrently updated by other threads; for example, when
3532	<	* computing a snapshot summary of the values in a shared
3533	<	* registry.  There are three kinds of operation, each with four
3534	<	* forms, accepting functions with Keys, Values, Entries, and
3535	<	* (Key, Value) arguments and/or return values. Because the
3536	<	* elements of a ConcurrentHashMap are not ordered in any
3537	<	* particular way, and may be processed in different orders in
3538	<	* different parallel executions, the correctness of supplied
3539	<	* functions should not depend on any ordering, or on any other
3540	<	* objects or values that may transiently change while computation
3541	<	* is in progress; and except for forEach actions, should ideally
3542	<	* be side-effect-free.
3543	<	*
3544	<	* <ul>
3545	<	* <li> forEach: Perform a given action on each element.
3546	<	* A variant form applies a given transformation on each element
3547	<	* before performing the action.</li>
3548	<	*
3549	<	* <li> search: Return the first available non-null result of
3550	<	* applying a given function on each element; skipping further
3551	<	* search when a result is found.</li>
3552	<	*
3553	<	* <li> reduce: Accumulate each element.  The supplied reduction
3554	<	* function cannot rely on ordering (more formally, it should be
3555	<	* both associative and commutative).  There are five variants:
3556	<	*
3557	<	* <ul>
3558	<	*
3559	<	* <li> Plain reductions. (There is not a form of this method for
3560	<	* (key, value) function arguments since there is no corresponding
3561	<	* return type.)</li>
3562	<	*
3563	<	* <li> Mapped reductions that accumulate the results of a given
3564	<	* function applied to each element.</li>
3565	<	*
3566	<	* <li> Reductions to scalar doubles, longs, and ints, using a
3567	<	* given basis value.</li>
3568	<	*
3569	<	* </li>
3570	<	* </ul>
3571	<	* </ul>
3572	<	*
3573	<	* <p>The concurrency properties of the bulk operations follow
3574	<	* from those of ConcurrentHashMap: Any non-null result returned
3575	<	* from {@code get(key)} and related access methods bears a
3576	<	* happens-before relation with the associated insertion or
3577	<	* update.  The result of any bulk operation reflects the
3578	<	* composition of these per-element relations (but is not
3579	<	* necessarily atomic with respect to the map as a whole unless it
3580	<	* is somehow known to be quiescent).  Conversely, because keys
3581	<	* and values in the map are never null, null serves as a reliable
3582	<	* atomic indicator of the current lack of any result.  To
3583	<	* maintain this property, null serves as an implicit basis for
3584	<	* all non-scalar reduction operations. For the double, long, and
3585	<	* int versions, the basis should be one that, when combined with
3586	<	* any other value, returns that other value (more formally, it
3587	<	* should be the identity element for the reduction). Most common
3588	<	* reductions have these properties; for example, computing a sum
3589	<	* with basis 0 or a minimum with basis MAX_VALUE.
3590	<	*
3591	<	* <p>Search and transformation functions provided as arguments
3592	<	* should similarly return null to indicate the lack of any result
3593	<	* (in which case it is not used). In the case of mapped
3594	<	* reductions, this also enables transformations to serve as
3595	<	* filters, returning null (or, in the case of primitive
3596	<	* specializations, the identity basis) if the element should not
3597	<	* be combined. You can create compound transformations and
3598	<	* filterings by composing them yourself under this "null means
3599	<	* there is nothing there now" rule before using them in search or
3600	<	* reduce operations.
3601	<	*
3602	<	* <p>Methods accepting and/or returning Entry arguments maintain
3603	<	* key-value associations. They may be useful for example when
3604	<	* finding the key for the greatest value. Note that "plain" Entry
3605	<	* arguments can be supplied using {@code new
3606	<	* AbstractMap.SimpleEntry(k,v)}.
3607	<	*
3608	<	* <p> Bulk operations may complete abruptly, throwing an
3609	<	* exception encountered in the application of a supplied
3610	<	* function. Bear in mind when handling such exceptions that other
3611	<	* concurrently executing functions could also have thrown
3612	<	* exceptions, or would have done so if the first exception had
3613	<	* not occurred.
3614	<	*
3615	<	* <p>Parallel speedups compared to sequential processing are
3616	<	* common but not guaranteed.  Operations involving brief
3617	<	* functions on small maps may execute more slowly than sequential
3618	<	* loops if the underlying work to parallelize the computation is
3619	<	* more expensive than the computation itself. Similarly,
3620	<	* parallelization may not lead to much actual parallelism if all
3621	<	* processors are busy performing unrelated tasks.
3622	<	*
3623	<	* <p> All arguments to all task methods must be non-null.
3624	<	*
3625	<	* <p><em>jsr166e note: During transition, this class
3626	<	* uses nested functional interfaces with different names but the
3627	<	* same forms as those expected for JDK8.<em>
3628	<	*/
3629	<	public class Parallel {
3630	<	final ForkJoinPool fjp;
3631	<
3632	<	/**
3633	<	* Returns an extended view of this map using the given
3634	<	* executor for bulk parallel operations.
3635	<	*
3636	<	* @param executor the executor
3637	<	*/
3638	<	public Parallel(ForkJoinPool executor)  {
3639	<	this.fjp = executor;
3640	<	}
3528	>	* Performs the given action for each non-null transformation
3529	>	* of each (key, value).
3530	>	*
3531	>	* @param transformer a function returning the transformation
3532	>	* for an element, or null of there is no transformation (in
3533	>	* which case the action is not applied).
3534	>	* @param action the action
3535	>	*/
3536	>	public <U> void forEach(BiFun<? super K, ? super V, ? extends U> transformer,
3537	>	Action<U> action) {
3538	>	ForkJoinTasks.forEach
3539	>	(this, transformer, action).invoke();
3540	>	}
3541	>
3542	>	/**
3543	>	* Returns a non-null result from applying the given search
3544	>	* function on each (key, value), or null if none.  Upon
3545	>	* success, further element processing is suppressed and the
3546	>	* results of any other parallel invocations of the search
3547	>	* function are ignored.
3548	>	*
3549	>	* @param searchFunction a function returning a non-null
3550	>	* result on success, else null
3551	>	* @return a non-null result from applying the given search
3552	>	* function on each (key, value), or null if none
3553	>	*/
3554	>	public <U> U search(BiFun<? super K, ? super V, ? extends U> searchFunction) {
3555	>	return ForkJoinTasks.search
3556	>	(this, searchFunction).invoke();
3557	>	}
3558	>
3559	>	/**
3560	>	* Returns the result of accumulating the given transformation
3561	>	* of all (key, value) pairs using the given reducer to
3562	>	* combine values, or null if none.
3563	>	*
3564	>	* @param transformer a function returning the transformation
3565	>	* for an element, or null of there is no transformation (in
3566	>	* which case it is not combined).
3567	>	* @param reducer a commutative associative combining function
3568	>	* @return the result of accumulating the given transformation
3569	>	* of all (key, value) pairs
3570	>	*/
3571	>	public <U> U reduce(BiFun<? super K, ? super V, ? extends U> transformer,
3572	>	BiFun<? super U, ? super U, ? extends U> reducer) {
3573	>	return ForkJoinTasks.reduce
3574	>	(this, transformer, reducer).invoke();
3575	>	}
3576	>
3577	>	/**
3578	>	* Returns the result of accumulating the given transformation
3579	>	* of all (key, value) pairs using the given reducer to
3580	>	* combine values, and the given basis as an identity value.
3581	>	*
3582	>	* @param transformer a function returning the transformation
3583	>	* for an element
3584	>	* @param basis the identity (initial default value) for the reduction
3585	>	* @param reducer a commutative associative combining function
3586	>	* @return the result of accumulating the given transformation
3587	>	* of all (key, value) pairs
3588	>	*/
3589	>	public double reduceToDouble(ObjectByObjectToDouble<? super K, ? super V> transformer,
3590	>	double basis,
3591	>	DoubleByDoubleToDouble reducer) {
3592	>	return ForkJoinTasks.reduceToDouble
3593	>	(this, transformer, basis, reducer).invoke();
3594	>	}
3595	>
3596	>	/**
3597	>	* Returns the result of accumulating the given transformation
3598	>	* of all (key, value) pairs using the given reducer to
3599	>	* combine values, and the given basis as an identity value.
3600	>	*
3601	>	* @param transformer a function returning the transformation
3602	>	* for an element
3603	>	* @param basis the identity (initial default value) for the reduction
3604	>	* @param reducer a commutative associative combining function
3605	>	* @return the result of accumulating the given transformation
3606	>	* of all (key, value) pairs
3607	>	*/
3608	>	public long reduceToLong(ObjectByObjectToLong<? super K, ? super V> transformer,
3609	>	long basis,
3610	>	LongByLongToLong reducer) {
3611	>	return ForkJoinTasks.reduceToLong
3612	>	(this, transformer, basis, reducer).invoke();
3613	>	}
3614	>
3615	>	/**
3616	>	* Returns the result of accumulating the given transformation
3617	>	* of all (key, value) pairs using the given reducer to
3618	>	* combine values, and the given basis as an identity value.
3619	>	*
3620	>	* @param transformer a function returning the transformation
3621	>	* for an element
3622	>	* @param basis the identity (initial default value) for the reduction
3623	>	* @param reducer a commutative associative combining function
3624	>	* @return the result of accumulating the given transformation
3625	>	* of all (key, value) pairs
3626	>	*/
3627	>	public int reduceToInt(ObjectByObjectToInt<? super K, ? super V> transformer,
3628	>	int basis,
3629	>	IntByIntToInt reducer) {
3630	>	return ForkJoinTasks.reduceToInt
3631	>	(this, transformer, basis, reducer).invoke();
3632	>	}
3633	>
3634	>	/**
3635	>	* Performs the given action for each key.
3636	>	*
3637	>	* @param action the action
3638	>	*/
3639	>	public void forEachKey(Action<K> action) {
3640	>	ForkJoinTasks.forEachKey
3641	>	(this, action).invoke();
3642	>	}
3643	>
3644	>	/**
3645	>	* Performs the given action for each non-null transformation
3646	>	* of each key.
3647	>	*
3648	>	* @param transformer a function returning the transformation
3649	>	* for an element, or null of there is no transformation (in
3650	>	* which case the action is not applied).
3651	>	* @param action the action
3652	>	*/
3653	>	public <U> void forEachKey(Fun<? super K, ? extends U> transformer,
3654	>	Action<U> action) {
3655	>	ForkJoinTasks.forEachKey
3656	>	(this, transformer, action).invoke();
3657	>	}
3658	>
3659	>	/**
3660	>	* Returns a non-null result from applying the given search
3661	>	* function on each key, or null if none. Upon success,
3662	>	* further element processing is suppressed and the results of
3663	>	* any other parallel invocations of the search function are
3664	>	* ignored.
3665	>	*
3666	>	* @param searchFunction a function returning a non-null
3667	>	* result on success, else null
3668	>	* @return a non-null result from applying the given search
3669	>	* function on each key, or null if none
3670	>	*/
3671	>	public <U> U searchKeys(Fun<? super K, ? extends U> searchFunction) {
3672	>	return ForkJoinTasks.searchKeys
3673	>	(this, searchFunction).invoke();
3674	>	}
3675	>
3676	>	/**
3677	>	* Returns the result of accumulating all keys using the given
3678	>	* reducer to combine values, or null if none.
3679	>	*
3680	>	* @param reducer a commutative associative combining function
3681	>	* @return the result of accumulating all keys using the given
3682	>	* reducer to combine values, or null if none
3683	>	*/
3684	>	public K reduceKeys(BiFun<? super K, ? super K, ? extends K> reducer) {
3685	>	return ForkJoinTasks.reduceKeys
3686	>	(this, reducer).invoke();
3687	>	}
3688	>
3689	>	/**
3690	>	* Returns the result of accumulating the given transformation
3691	>	* of all keys using the given reducer to combine values, or
3692	>	* null if none.
3693	>	*
3694	>	* @param transformer a function returning the transformation
3695	>	* for an element, or null of there is no transformation (in
3696	>	* which case it is not combined).
3697	>	* @param reducer a commutative associative combining function
3698	>	* @return the result of accumulating the given transformation
3699	>	* of all keys
3700	>	*/
3701	>	public <U> U reduceKeys(Fun<? super K, ? extends U> transformer,
3702	>	BiFun<? super U, ? super U, ? extends U> reducer) {
3703	>	return ForkJoinTasks.reduceKeys
3704	>	(this, transformer, reducer).invoke();
3705	>	}
3706	>
3707	>	/**
3708	>	* Returns the result of accumulating the given transformation
3709	>	* of all keys using the given reducer to combine values, and
3710	>	* the given basis as an identity value.
3711	>	*
3712	>	* @param transformer a function returning the transformation
3713	>	* for an element
3714	>	* @param basis the identity (initial default value) for the reduction
3715	>	* @param reducer a commutative associative combining function
3716	>	* @return  the result of accumulating the given transformation
3717	>	* of all keys
3718	>	*/
3719	>	public double reduceKeysToDouble(ObjectToDouble<? super K> transformer,
3720	>	double basis,
3721	>	DoubleByDoubleToDouble reducer) {
3722	>	return ForkJoinTasks.reduceKeysToDouble
3723	>	(this, transformer, basis, reducer).invoke();
3724	>	}
3725	>
3726	>	/**
3727	>	* Returns the result of accumulating the given transformation
3728	>	* of all keys using the given reducer to combine values, and
3729	>	* the given basis as an identity value.
3730	>	*
3731	>	* @param transformer a function returning the transformation
3732	>	* for an element
3733	>	* @param basis the identity (initial default value) for the reduction
3734	>	* @param reducer a commutative associative combining function
3735	>	* @return the result of accumulating the given transformation
3736	>	* of all keys
3737	>	*/
3738	>	public long reduceKeysToLong(ObjectToLong<? super K> transformer,
3739	>	long basis,
3740	>	LongByLongToLong reducer) {
3741	>	return ForkJoinTasks.reduceKeysToLong
3742	>	(this, transformer, basis, reducer).invoke();
3743	>	}
3744	>
3745	>	/**
3746	>	* Returns the result of accumulating the given transformation
3747	>	* of all keys using the given reducer to combine values, and
3748	>	* the given basis as an identity value.
3749	>	*
3750	>	* @param transformer a function returning the transformation
3751	>	* for an element
3752	>	* @param basis the identity (initial default value) for the reduction
3753	>	* @param reducer a commutative associative combining function
3754	>	* @return the result of accumulating the given transformation
3755	>	* of all keys
3756	>	*/
3757	>	public int reduceKeysToInt(ObjectToInt<? super K> transformer,
3758	>	int basis,
3759	>	IntByIntToInt reducer) {
3760	>	return ForkJoinTasks.reduceKeysToInt
3761	>	(this, transformer, basis, reducer).invoke();
3762	>	}
3763	>
3764	>	/**
3765	>	* Performs the given action for each value.
3766	>	*
3767	>	* @param action the action
3768	>	*/
3769	>	public void forEachValue(Action<V> action) {
3770	>	ForkJoinTasks.forEachValue
3771	>	(this, action).invoke();
3772	>	}
3773	>
3774	>	/**
3775	>	* Performs the given action for each non-null transformation
3776	>	* of each value.
3777	>	*
3778	>	* @param transformer a function returning the transformation
3779	>	* for an element, or null of there is no transformation (in
3780	>	* which case the action is not applied).
3781	>	*/
3782	>	public <U> void forEachValue(Fun<? super V, ? extends U> transformer,
3783	>	Action<U> action) {
3784	>	ForkJoinTasks.forEachValue
3785	>	(this, transformer, action).invoke();
3786	>	}
3787	>
3788	>	/**
3789	>	* Returns a non-null result from applying the given search
3790	>	* function on each value, or null if none.  Upon success,
3791	>	* further element processing is suppressed and the results of
3792	>	* any other parallel invocations of the search function are
3793	>	* ignored.
3794	>	*
3795	>	* @param searchFunction a function returning a non-null
3796	>	* result on success, else null
3797	>	* @return a non-null result from applying the given search
3798	>	* function on each value, or null if none
3799	>	*
3800	>	*/
3801	>	public <U> U searchValues(Fun<? super V, ? extends U> searchFunction) {
3802	>	return ForkJoinTasks.searchValues
3803	>	(this, searchFunction).invoke();
3804	>	}
3805	>
3806	>	/**
3807	>	* Returns the result of accumulating all values using the
3808	>	* given reducer to combine values, or null if none.
3809	>	*
3810	>	* @param reducer a commutative associative combining function
3811	>	* @return  the result of accumulating all values
3812	>	*/
3813	>	public V reduceValues(BiFun<? super V, ? super V, ? extends V> reducer) {
3814	>	return ForkJoinTasks.reduceValues
3815	>	(this, reducer).invoke();
3816	>	}
3817	>
3818	>	/**
3819	>	* Returns the result of accumulating the given transformation
3820	>	* of all values using the given reducer to combine values, or
3821	>	* null if none.
3822	>	*
3823	>	* @param transformer a function returning the transformation
3824	>	* for an element, or null of there is no transformation (in
3825	>	* which case it is not combined).
3826	>	* @param reducer a commutative associative combining function
3827	>	* @return the result of accumulating the given transformation
3828	>	* of all values
3829	>	*/
3830	>	public <U> U reduceValues(Fun<? super V, ? extends U> transformer,
3831	>	BiFun<? super U, ? super U, ? extends U> reducer) {
3832	>	return ForkJoinTasks.reduceValues
3833	>	(this, transformer, reducer).invoke();
3834	>	}
3835	>
3836	>	/**
3837	>	* Returns the result of accumulating the given transformation
3838	>	* of all values using the given reducer to combine values,
3839	>	* and the given basis as an identity value.
3840	>	*
3841	>	* @param transformer a function returning the transformation
3842	>	* for an element
3843	>	* @param basis the identity (initial default value) for the reduction
3844	>	* @param reducer a commutative associative combining function
3845	>	* @return the result of accumulating the given transformation
3846	>	* of all values
3847	>	*/
3848	>	public double reduceValuesToDouble(ObjectToDouble<? super V> transformer,
3849	>	double basis,
3850	>	DoubleByDoubleToDouble reducer) {
3851	>	return ForkJoinTasks.reduceValuesToDouble
3852	>	(this, transformer, basis, reducer).invoke();
3853	>	}
3854	>
3855	>	/**
3856	>	* Returns the result of accumulating the given transformation
3857	>	* of all values using the given reducer to combine values,
3858	>	* and the given basis as an identity value.
3859	>	*
3860	>	* @param transformer a function returning the transformation
3861	>	* for an element
3862	>	* @param basis the identity (initial default value) for the reduction
3863	>	* @param reducer a commutative associative combining function
3864	>	* @return the result of accumulating the given transformation
3865	>	* of all values
3866	>	*/
3867	>	public long reduceValuesToLong(ObjectToLong<? super V> transformer,
3868	>	long basis,
3869	>	LongByLongToLong reducer) {
3870	>	return ForkJoinTasks.reduceValuesToLong
3871	>	(this, transformer, basis, reducer).invoke();
3872	>	}
3873	>
3874	>	/**
3875	>	* Returns the result of accumulating the given transformation
3876	>	* of all values using the given reducer to combine values,
3877	>	* and the given basis as an identity value.
3878	>	*
3879	>	* @param transformer a function returning the transformation
3880	>	* for an element
3881	>	* @param basis the identity (initial default value) for the reduction
3882	>	* @param reducer a commutative associative combining function
3883	>	* @return the result of accumulating the given transformation
3884	>	* of all values
3885	>	*/
3886	>	public int reduceValuesToInt(ObjectToInt<? super V> transformer,
3887	>	int basis,
3888	>	IntByIntToInt reducer) {
3889	>	return ForkJoinTasks.reduceValuesToInt
3890	>	(this, transformer, basis, reducer).invoke();
3891	>	}
3892	>
3893	>	/**
3894	>	* Performs the given action for each entry.
3895	>	*
3896	>	* @param action the action
3897	>	*/
3898	>	public void forEachEntry(Action<Map.Entry<K,V>> action) {
3899	>	ForkJoinTasks.forEachEntry
3900	>	(this, action).invoke();
3901	>	}
3902	>
3903	>	/**
3904	>	* Performs the given action for each non-null transformation
3905	>	* of each entry.
3906	>	*
3907	>	* @param transformer a function returning the transformation
3908	>	* for an element, or null of there is no transformation (in
3909	>	* which case the action is not applied).
3910	>	* @param action the action
3911	>	*/
3912	>	public <U> void forEachEntry(Fun<Map.Entry<K,V>, ? extends U> transformer,
3913	>	Action<U> action) {
3914	>	ForkJoinTasks.forEachEntry
3915	>	(this, transformer, action).invoke();
3916	>	}
3917	>
3918	>	/**
3919	>	* Returns a non-null result from applying the given search
3920	>	* function on each entry, or null if none.  Upon success,
3921	>	* further element processing is suppressed and the results of
3922	>	* any other parallel invocations of the search function are
3923	>	* ignored.
3924	>	*
3925	>	* @param searchFunction a function returning a non-null
3926	>	* result on success, else null
3927	>	* @return a non-null result from applying the given search
3928	>	* function on each entry, or null if none
3929	>	*/
3930	>	public <U> U searchEntries(Fun<Map.Entry<K,V>, ? extends U> searchFunction) {
3931	>	return ForkJoinTasks.searchEntries
3932	>	(this, searchFunction).invoke();
3933	>	}
3934	>
3935	>	/**
3936	>	* Returns the result of accumulating all entries using the
3937	>	* given reducer to combine values, or null if none.
3938	>	*
3939	>	* @param reducer a commutative associative combining function
3940	>	* @return the result of accumulating all entries
3941	>	*/
3942	>	public Map.Entry<K,V> reduceEntries(BiFun<Map.Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer) {
3943	>	return ForkJoinTasks.reduceEntries
3944	>	(this, reducer).invoke();
3945	>	}
3946	>
3947	>	/**
3948	>	* Returns the result of accumulating the given transformation
3949	>	* of all entries using the given reducer to combine values,
3950	>	* or null if none.
3951	>	*
3952	>	* @param transformer a function returning the transformation
3953	>	* for an element, or null of there is no transformation (in
3954	>	* which case it is not combined).
3955	>	* @param reducer a commutative associative combining function
3956	>	* @return the result of accumulating the given transformation
3957	>	* of all entries
3958	>	*/
3959	>	public <U> U reduceEntries(Fun<Map.Entry<K,V>, ? extends U> transformer,
3960	>	BiFun<? super U, ? super U, ? extends U> reducer) {
3961	>	return ForkJoinTasks.reduceEntries
3962	>	(this, transformer, reducer).invoke();
3963	>	}
3964	>
3965	>	/**
3966	>	* Returns the result of accumulating the given transformation
3967	>	* of all entries using the given reducer to combine values,
3968	>	* and the given basis as an identity value.
3969	>	*
3970	>	* @param transformer a function returning the transformation
3971	>	* for an element
3972	>	* @param basis the identity (initial default value) for the reduction
3973	>	* @param reducer a commutative associative combining function
3974	>	* @return the result of accumulating the given transformation
3975	>	* of all entries
3976	>	*/
3977	>	public double reduceEntriesToDouble(ObjectToDouble<Map.Entry<K,V>> transformer,
3978	>	double basis,
3979	>	DoubleByDoubleToDouble reducer) {
3980	>	return ForkJoinTasks.reduceEntriesToDouble
3981	>	(this, transformer, basis, reducer).invoke();
3982	>	}
3983	>
3984	>	/**
3985	>	* Returns the result of accumulating the given transformation
3986	>	* of all entries using the given reducer to combine values,
3987	>	* and the given basis as an identity value.
3988	>	*
3989	>	* @param transformer a function returning the transformation
3990	>	* for an element
3991	>	* @param basis the identity (initial default value) for the reduction
3992	>	* @param reducer a commutative associative combining function
3993	>	* @return  the result of accumulating the given transformation
3994	>	* of all entries
3995	>	*/
3996	>	public long reduceEntriesToLong(ObjectToLong<Map.Entry<K,V>> transformer,
3997	>	long basis,
3998	>	LongByLongToLong reducer) {
3999	>	return ForkJoinTasks.reduceEntriesToLong
4000	>	(this, transformer, basis, reducer).invoke();
4001	>	}
4002	>
4003	>	/**
4004	>	* Returns the result of accumulating the given transformation
4005	>	* of all entries using the given reducer to combine values,
4006	>	* and the given basis as an identity value.
4007	>	*
4008	>	* @param transformer a function returning the transformation
4009	>	* for an element
4010	>	* @param basis the identity (initial default value) for the reduction
4011	>	* @param reducer a commutative associative combining function
4012	>	* @return the result of accumulating the given transformation
4013	>	* of all entries
4014	>	*/
4015	>	public int reduceEntriesToInt(ObjectToInt<Map.Entry<K,V>> transformer,
4016	>	int basis,
4017	>	IntByIntToInt reducer) {
4018	>	return ForkJoinTasks.reduceEntriesToInt
4019	>	(this, transformer, basis, reducer).invoke();
4020	>	}
4021	>
4022	>	/* ----------------Views -------------- */
4023	>
4024	>	/**
4025	>	* Base class for views.
4026	>	*/
4027	>	static abstract class CHMView<K, V> {
4028	>	final ConcurrentHashMapV8<K, V> map;
4029	>	CHMView(ConcurrentHashMapV8<K, V> map)  { this.map = map; }
4030
4031		/**
4032	<	* Performs the given action for each (key, value).
4032	>	* Returns the map backing this view.
4033		*
4034	<	* @param action the action
4034	>	* @return the map backing this view
4035		*/
4036	<	public void forEach(BiAction<K,V> action) {
4037	<	fjp.invoke(ForkJoinTasks.forEach
4038	<	(ConcurrentHashMapV8.this, action));
4036	>	public ConcurrentHashMapV8<K,V> getMap() { return map; }
4037	>
4038	>	public final int size()                 { return map.size(); }
4039	>	public final boolean isEmpty()          { return map.isEmpty(); }
4040	>	public final void clear()               { map.clear(); }
4041	>
4042	>	// implementations below rely on concrete classes supplying these
4043	>	abstract public Iterator<?> iterator();
4044	>	abstract public boolean contains(Object o);
4045	>	abstract public boolean remove(Object o);
4046	>
4047	>	private static final String oomeMsg = "Required array size too large";
4048	>
4049	>	public final Object[] toArray() {
4050	>	long sz = map.mappingCount();
4051	>	if (sz > (long)(MAX_ARRAY_SIZE))
4052	>	throw new OutOfMemoryError(oomeMsg);
4053	>	int n = (int)sz;
4054	>	Object[] r = new Object[n];
4055	>	int i = 0;
4056	>	Iterator<?> it = iterator();
4057	>	while (it.hasNext()) {
4058	>	if (i == n) {
4059	>	if (n >= MAX_ARRAY_SIZE)
4060	>	throw new OutOfMemoryError(oomeMsg);
4061	>	if (n >= MAX_ARRAY_SIZE - (MAX_ARRAY_SIZE >>> 1) - 1)
4062	>	n = MAX_ARRAY_SIZE;
4063	>	else
4064	>	n += (n >>> 1) + 1;
4065	>	r = Arrays.copyOf(r, n);
4066	>	}
4067	>	r[i++] = it.next();
4068	>	}
4069	>	return (i == n) ? r : Arrays.copyOf(r, i);
4070		}
4071
4072	<	/**
4073	<	* Performs the given action for each non-null transformation
4074	<	* of each (key, value).
4075	<	*
4076	<	* @param transformer a function returning the transformation
4077	<	* for an element, or null if there is no transformation (in
4078	<	* which case the action is not applied)
4079	<	* @param action the action
4080	<	*/
4081	<	public <U> void forEach(BiFun<? super K, ? super V, ? extends U> transformer,
4082	<	Action<U> action) {
4083	<	fjp.invoke(ForkJoinTasks.forEach
4084	<	(ConcurrentHashMapV8.this, transformer, action));
4072	>	@SuppressWarnings("unchecked") public final <T> T[] toArray(T[] a) {
4073	>	long sz = map.mappingCount();
4074	>	if (sz > (long)(MAX_ARRAY_SIZE))
4075	>	throw new OutOfMemoryError(oomeMsg);
4076	>	int m = (int)sz;
4077	>	T[] r = (a.length >= m) ? a :
4078	>	(T[])java.lang.reflect.Array
4079	>	.newInstance(a.getClass().getComponentType(), m);
4080	>	int n = r.length;
4081	>	int i = 0;
4082	>	Iterator<?> it = iterator();
4083	>	while (it.hasNext()) {
4084	>	if (i == n) {
4085	>	if (n >= MAX_ARRAY_SIZE)
4086	>	throw new OutOfMemoryError(oomeMsg);
4087	>	if (n >= MAX_ARRAY_SIZE - (MAX_ARRAY_SIZE >>> 1) - 1)
4088	>	n = MAX_ARRAY_SIZE;
4089	>	else
4090	>	n += (n >>> 1) + 1;
4091	>	r = Arrays.copyOf(r, n);
4092	>	}
4093	>	r[i++] = (T)it.next();
4094	>	}
4095	>	if (a == r && i < n) {
4096	>	r[i] = null; // null-terminate
4097	>	return r;
4098	>	}
4099	>	return (i == n) ? r : Arrays.copyOf(r, i);
4100		}
4101
4102	<	/**
4103	<	* Returns a non-null result from applying the given search
4104	<	* function on each (key, value), or null if none.  Upon
4105	<	* success, further element processing is suppressed and the
4106	<	* results of any other parallel invocations of the search
3689	<	* function are ignored.
3690	<	*
3691	<	* @param searchFunction a function returning a non-null
3692	<	* result on success, else null
3693	<	* @return a non-null result from applying the given search
3694	<	* function on each (key, value), or null if none
3695	<	*/
3696	<	public <U> U search(BiFun<? super K, ? super V, ? extends U> searchFunction) {
3697	<	return fjp.invoke(ForkJoinTasks.search
3698	<	(ConcurrentHashMapV8.this, searchFunction));
4102	>	public final int hashCode() {
4103	>	int h = 0;
4104	>	for (Iterator<?> it = iterator(); it.hasNext();)
4105	>	h += it.next().hashCode();
4106	>	return h;
4107		}
4108
4109	<	/**
4110	<	* Returns the result of accumulating the given transformation
4111	<	* of all (key, value) pairs using the given reducer to
4112	<	* combine values, or null if none.
4113	<	*
4114	<	* @param transformer a function returning the transformation
4115	<	* for an element, or null if there is no transformation (in
4116	<	* which case it is not combined)
4117	<	* @param reducer a commutative associative combining function
4118	<	* @return the result of accumulating the given transformation
4119	<	* of all (key, value) pairs
4120	<	*/
4121	<	public <U> U reduce(BiFun<? super K, ? super V, ? extends U> transformer,
4122	<	BiFun<? super U, ? super U, ? extends U> reducer) {
3715	<	return fjp.invoke(ForkJoinTasks.reduce
3716	<	(ConcurrentHashMapV8.this, transformer, reducer));
4109	>	public final String toString() {
4110	>	StringBuilder sb = new StringBuilder();
4111	>	sb.append('[');
4112	>	Iterator<?> it = iterator();
4113	>	if (it.hasNext()) {
4114	>	for (;;) {
4115	>	Object e = it.next();
4116	>	sb.append(e == this ? "(this Collection)" : e);
4117	>	if (!it.hasNext())
4118	>	break;
4119	>	sb.append(',').append(' ');
4120	>	}
4121	>	}
4122	>	return sb.append(']').toString();
4123		}
4124
4125	<	/**
4126	<	* Returns the result of accumulating the given transformation
4127	<	* of all (key, value) pairs using the given reducer to
4128	<	* combine values, and the given basis as an identity value.
4129	<	*
4130	<	* @param transformer a function returning the transformation
4131	<	* for an element
4132	<	* @param basis the identity (initial default value) for the reduction
4133	<	* @param reducer a commutative associative combining function
4134	<	* @return the result of accumulating the given transformation
4135	<	* of all (key, value) pairs
4136	<	*/
4137	<	public double reduceToDouble(ObjectByObjectToDouble<? super K, ? super V> transformer,
4138	<	double basis,
4139	<	DoubleByDoubleToDouble reducer) {
4140	<	return fjp.invoke(ForkJoinTasks.reduceToDouble
4141	<	(ConcurrentHashMapV8.this, transformer, basis, reducer));
4125	>	public final boolean containsAll(Collection<?> c) {
4126	>	if (c != this) {
4127	>	for (Iterator<?> it = c.iterator(); it.hasNext();) {
4128	>	Object e = it.next();
4129	>	if (e == null || !contains(e))
4130	>	return false;
4131	>	}
4132	>	}
4133	>	return true;
4134	>	}
4135	>
4136	>	public final boolean removeAll(Collection<?> c) {
4137	>	boolean modified = false;
4138	>	for (Iterator<?> it = iterator(); it.hasNext();) {
4139	>	if (c.contains(it.next())) {
4140	>	it.remove();
4141	>	modified = true;
4142	>	}
4143	>	}
4144	>	return modified;
4145	>	}
4146	>
4147	>	public final boolean retainAll(Collection<?> c) {
4148	>	boolean modified = false;
4149	>	for (Iterator<?> it = iterator(); it.hasNext();) {
4150	>	if (!c.contains(it.next())) {
4151	>	it.remove();
4152	>	modified = true;
4153	>	}
4154	>	}
4155	>	return modified;
4156	>	}
4157	>
4158	>	}
4159	>
4160	>	/**
4161	>	* A view of a ConcurrentHashMapV8 as a {@link Set} of keys, in
4162	>	* which additions may optionally be enabled by mapping to a
4163	>	* common value.  This class cannot be directly instantiated. See
4164	>	* {@link #keySet}, {@link #keySet(Object)}, {@link #newKeySet()},
4165	>	* {@link #newKeySet(int)}.
4166	>	*/
4167	>	public static class KeySetView<K,V> extends CHMView<K,V> implements Set<K>, java.io.Serializable {
4168	>	private static final long serialVersionUID = 7249069246763182397L;
4169	>	private final V value;
4170	>	KeySetView(ConcurrentHashMapV8<K, V> map, V value) {  // non-public
4171	>	super(map);
4172	>	this.value = value;
4173		}
4174
4175		/**
4176	<	* Returns the result of accumulating the given transformation
4177	<	* of all (key, value) pairs using the given reducer to
3741	<	* combine values, and the given basis as an identity value.
4176	>	* Returns the default mapped value for additions,
4177	>	* or {@code null} if additions are not supported.
4178		*
4179	<	* @param transformer a function returning the transformation
4180	<	* for an element
3745	<	* @param basis the identity (initial default value) for the reduction
3746	<	* @param reducer a commutative associative combining function
3747	<	* @return the result of accumulating the given transformation
3748	<	* of all (key, value) pairs
4179	>	* @return the default mapped value for additions, or {@code null}
4180	>	* if not supported.
4181		*/
4182	<	public long reduceToLong(ObjectByObjectToLong<? super K, ? super V> transformer,
4183	<	long basis,
4184	<	LongByLongToLong reducer) {
4185	<	return fjp.invoke(ForkJoinTasks.reduceToLong
4186	<	(ConcurrentHashMapV8.this, transformer, basis, reducer));
4187	<	}
4182	>	public V getMappedValue() { return value; }
4183	>
4184	>	// implement Set API
4185	>
4186	>	public boolean contains(Object o) { return map.containsKey(o); }
4187	>	public boolean remove(Object o)   { return map.remove(o) != null; }
4188
4189		/**
4190	<	* Returns the result of accumulating the given transformation
4191	<	* of all (key, value) pairs using the given reducer to
4192	<	* combine values, and the given basis as an identity value.
4190	>	* Returns a "weakly consistent" iterator that will never
4191	>	* throw {@link ConcurrentModificationException}, and
4192	>	* guarantees to traverse elements as they existed upon
4193	>	* construction of the iterator, and may (but is not
4194	>	* guaranteed to) reflect any modifications subsequent to
4195	>	* construction.
4196		*
4197	<	* @param transformer a function returning the transformation
3763	<	* for an element
3764	<	* @param basis the identity (initial default value) for the reduction
3765	<	* @param reducer a commutative associative combining function
3766	<	* @return the result of accumulating the given transformation
3767	<	* of all (key, value) pairs
4197	>	* @return an iterator over the keys of this map
4198		*/
4199	<	public int reduceToInt(ObjectByObjectToInt<? super K, ? super V> transformer,
4200	<	int basis,
4201	<	IntByIntToInt reducer) {
4202	<	return fjp.invoke(ForkJoinTasks.reduceToInt
4203	<	(ConcurrentHashMapV8.this, transformer, basis, reducer));
4199	>	public Iterator<K> iterator()     { return new KeyIterator<K,V>(map); }
4200	>	public boolean add(K e) {
4201	>	V v;
4202	>	if ((v = value) == null)
4203	>	throw new UnsupportedOperationException();
4204	>	if (e == null)
4205	>	throw new NullPointerException();
4206	>	return map.internalPutIfAbsent(e, v) == null;
4207	>	}
4208	>	public boolean addAll(Collection<? extends K> c) {
4209	>	boolean added = false;
4210	>	V v;
4211	>	if ((v = value) == null)
4212	>	throw new UnsupportedOperationException();
4213	>	for (K e : c) {
4214	>	if (e == null)
4215	>	throw new NullPointerException();
4216	>	if (map.internalPutIfAbsent(e, v) == null)
4217	>	added = true;
4218	>	}
4219	>	return added;
4220	>	}
4221	>	public boolean equals(Object o) {
4222	>	Set<?> c;
4223	>	return ((o instanceof Set) &&
4224	>	((c = (Set<?>)o) == this ||
4225	>	(containsAll(c) && c.containsAll(this))));
4226		}
4227
4228		/**
#	Line 3778 | Line 4230 | public class ConcurrentHashMapV8<K, V>
4230		*
4231		* @param action the action
4232		*/
4233	<	public void forEachKey(Action<K> action) {
4234	<	fjp.invoke(ForkJoinTasks.forEachKey
4235	<	(ConcurrentHashMapV8.this, action));
4233	>	public void forEach(Action<K> action) {
4234	>	ForkJoinTasks.forEachKey
4235	>	(map, action).invoke();
4236		}
4237
4238		/**
#	Line 3788 | Line 4240 | public class ConcurrentHashMapV8<K, V>
4240		* of each key.
4241		*
4242		* @param transformer a function returning the transformation
4243	<	* for an element, or null if there is no transformation (in
4244	<	* which case the action is not applied)
4243	>	* for an element, or null of there is no transformation (in
4244	>	* which case the action is not applied).
4245		* @param action the action
4246		*/
4247	<	public <U> void forEachKey(Fun<? super K, ? extends U> transformer,
4248	<	Action<U> action) {
4249	<	fjp.invoke(ForkJoinTasks.forEachKey
4250	<	(ConcurrentHashMapV8.this, transformer, action));
4247	>	public <U> void forEach(Fun<? super K, ? extends U> transformer,
4248	>	Action<U> action) {
4249	>	ForkJoinTasks.forEachKey
4250	>	(map, transformer, action).invoke();
4251		}
4252
4253		/**
#	Line 3810 | Line 4262 | public class ConcurrentHashMapV8<K, V>
4262		* @return a non-null result from applying the given search
4263		* function on each key, or null if none
4264		*/
4265	<	public <U> U searchKeys(Fun<? super K, ? extends U> searchFunction) {
4266	<	return fjp.invoke(ForkJoinTasks.searchKeys
4267	<	(ConcurrentHashMapV8.this, searchFunction));
4265	>	public <U> U search(Fun<? super K, ? extends U> searchFunction) {
4266	>	return ForkJoinTasks.searchKeys
4267	>	(map, searchFunction).invoke();
4268		}
4269
4270		/**
#	Line 3823 | Line 4275 | public class ConcurrentHashMapV8<K, V>
4275		* @return the result of accumulating all keys using the given
4276		* reducer to combine values, or null if none
4277		*/
4278	<	public K reduceKeys(BiFun<? super K, ? super K, ? extends K> reducer) {
4279	<	return fjp.invoke(ForkJoinTasks.reduceKeys
4280	<	(ConcurrentHashMapV8.this, reducer));
3829	<	}
3830	<
3831	<	/**
3832	<	* Returns the result of accumulating the given transformation
3833	<	* of all keys using the given reducer to combine values, or
3834	<	* null if none.
3835	<	*
3836	<	* @param transformer a function returning the transformation
3837	<	* for an element, or null if there is no transformation (in
3838	<	* which case it is not combined)
3839	<	* @param reducer a commutative associative combining function
3840	<	* @return the result of accumulating the given transformation
3841	<	* of all keys
3842	<	*/
3843	<	public <U> U reduceKeys(Fun<? super K, ? extends U> transformer,
3844	<	BiFun<? super U, ? super U, ? extends U> reducer) {
3845	<	return fjp.invoke(ForkJoinTasks.reduceKeys
3846	<	(ConcurrentHashMapV8.this, transformer, reducer));
4278	>	public K reduce(BiFun<? super K, ? super K, ? extends K> reducer) {
4279	>	return ForkJoinTasks.reduceKeys
4280	>	(map, reducer).invoke();
4281		}
4282
4283		/**
#	Line 3858 | Line 4292 | public class ConcurrentHashMapV8<K, V>
4292		* @return  the result of accumulating the given transformation
4293		* of all keys
4294		*/
4295	<	public double reduceKeysToDouble(ObjectToDouble<? super K> transformer,
4296	<	double basis,
4297	<	DoubleByDoubleToDouble reducer) {
4298	<	return fjp.invoke(ForkJoinTasks.reduceKeysToDouble
4299	<	(ConcurrentHashMapV8.this, transformer, basis, reducer));
4295	>	public double reduceToDouble(ObjectToDouble<? super K> transformer,
4296	>	double basis,
4297	>	DoubleByDoubleToDouble reducer) {
4298	>	return ForkJoinTasks.reduceKeysToDouble
4299	>	(map, transformer, basis, reducer).invoke();
4300		}
4301
4302	+
4303		/**
4304		* Returns the result of accumulating the given transformation
4305		* of all keys using the given reducer to combine values, and
#	Line 3877 | Line 4312 | public class ConcurrentHashMapV8<K, V>
4312		* @return the result of accumulating the given transformation
4313		* of all keys
4314		*/
4315	<	public long reduceKeysToLong(ObjectToLong<? super K> transformer,
4316	<	long basis,
4317	<	LongByLongToLong reducer) {
4318	<	return fjp.invoke(ForkJoinTasks.reduceKeysToLong
4319	<	(ConcurrentHashMapV8.this, transformer, basis, reducer));
4315	>	public long reduceToLong(ObjectToLong<? super K> transformer,
4316	>	long basis,
4317	>	LongByLongToLong reducer) {
4318	>	return ForkJoinTasks.reduceKeysToLong
4319	>	(map, transformer, basis, reducer).invoke();
4320		}
4321
4322		/**
#	Line 3896 | Line 4331 | public class ConcurrentHashMapV8<K, V>
4331		* @return the result of accumulating the given transformation
4332		* of all keys
4333		*/
4334	<	public int reduceKeysToInt(ObjectToInt<? super K> transformer,
4335	<	int basis,
4336	<	IntByIntToInt reducer) {
4337	<	return fjp.invoke(ForkJoinTasks.reduceKeysToInt
4338	<	(ConcurrentHashMapV8.this, transformer, basis, reducer));
4334	>	public int reduceToInt(ObjectToInt<? super K> transformer,
4335	>	int basis,
4336	>	IntByIntToInt reducer) {
4337	>	return ForkJoinTasks.reduceKeysToInt
4338	>	(map, transformer, basis, reducer).invoke();
4339	>	}
4340	>
4341	>	}
4342	>
4343	>	/**
4344	>	* A view of a ConcurrentHashMapV8 as a {@link Collection} of
4345	>	* values, in which additions are disabled. This class cannot be
4346	>	* directly instantiated. See {@link #values},
4347	>	*
4348	>	* <p>The view's {@code iterator} is a "weakly consistent" iterator
4349	>	* that will never throw {@link ConcurrentModificationException},
4350	>	* and guarantees to traverse elements as they existed upon
4351	>	* construction of the iterator, and may (but is not guaranteed to)
4352	>	* reflect any modifications subsequent to construction.
4353	>	*/
4354	>	public static final class ValuesView<K,V> extends CHMView<K,V>
4355	>	implements Collection<V> {
4356	>	ValuesView(ConcurrentHashMapV8<K, V> map)   { super(map); }
4357	>	public final boolean contains(Object o) { return map.containsValue(o); }
4358	>	public final boolean remove(Object o) {
4359	>	if (o != null) {
4360	>	Iterator<V> it = new ValueIterator<K,V>(map);
4361	>	while (it.hasNext()) {
4362	>	if (o.equals(it.next())) {
4363	>	it.remove();
4364	>	return true;
4365	>	}
4366	>	}
4367	>	}
4368	>	return false;
4369	>	}
4370	>
4371	>	/**
4372	>	* Returns a "weakly consistent" iterator that will never
4373	>	* throw {@link ConcurrentModificationException}, and
4374	>	* guarantees to traverse elements as they existed upon
4375	>	* construction of the iterator, and may (but is not
4376	>	* guaranteed to) reflect any modifications subsequent to
4377	>	* construction.
4378	>	*
4379	>	* @return an iterator over the values of this map
4380	>	*/
4381	>	public final Iterator<V> iterator() {
4382	>	return new ValueIterator<K,V>(map);
4383	>	}
4384	>	public final boolean add(V e) {
4385	>	throw new UnsupportedOperationException();
4386	>	}
4387	>	public final boolean addAll(Collection<? extends V> c) {
4388	>	throw new UnsupportedOperationException();
4389		}
4390
4391		/**
#	Line 3908 | Line 4393 | public class ConcurrentHashMapV8<K, V>
4393		*
4394		* @param action the action
4395		*/
4396	<	public void forEachValue(Action<V> action) {
4397	<	fjp.invoke(ForkJoinTasks.forEachValue
4398	<	(ConcurrentHashMapV8.this, action));
4396	>	public void forEach(Action<V> action) {
4397	>	ForkJoinTasks.forEachValue
4398	>	(map, action).invoke();
4399		}
4400
4401		/**
#	Line 3918 | Line 4403 | public class ConcurrentHashMapV8<K, V>
4403		* of each value.
4404		*
4405		* @param transformer a function returning the transformation
4406	<	* for an element, or null if there is no transformation (in
4407	<	* which case the action is not applied)
4406	>	* for an element, or null of there is no transformation (in
4407	>	* which case the action is not applied).
4408		*/
4409	<	public <U> void forEachValue(Fun<? super V, ? extends U> transformer,
4409	>	public <U> void forEach(Fun<? super V, ? extends U> transformer,
4410		Action<U> action) {
4411	<	fjp.invoke(ForkJoinTasks.forEachValue
4412	<	(ConcurrentHashMapV8.this, transformer, action));
4411	>	ForkJoinTasks.forEachValue
4412	>	(map, transformer, action).invoke();
4413		}
4414
4415		/**
#	Line 3938 | Line 4423 | public class ConcurrentHashMapV8<K, V>
4423		* result on success, else null
4424		* @return a non-null result from applying the given search
4425		* function on each value, or null if none
4426	+	*
4427		*/
4428	<	public <U> U searchValues(Fun<? super V, ? extends U> searchFunction) {
4429	<	return fjp.invoke(ForkJoinTasks.searchValues
4430	<	(ConcurrentHashMapV8.this, searchFunction));
4428	>	public <U> U search(Fun<? super V, ? extends U> searchFunction) {
4429	>	return ForkJoinTasks.searchValues
4430	>	(map, searchFunction).invoke();
4431		}
4432
4433		/**
#	Line 3951 | Line 4437 | public class ConcurrentHashMapV8<K, V>
4437		* @param reducer a commutative associative combining function
4438		* @return  the result of accumulating all values
4439		*/
4440	<	public V reduceValues(BiFun<? super V, ? super V, ? extends V> reducer) {
4441	<	return fjp.invoke(ForkJoinTasks.reduceValues
4442	<	(ConcurrentHashMapV8.this, reducer));
4440	>	public V reduce(BiFun<? super V, ? super V, ? extends V> reducer) {
4441	>	return ForkJoinTasks.reduceValues
4442	>	(map, reducer).invoke();
4443		}
4444
4445		/**
#	Line 3962 | Line 4448 | public class ConcurrentHashMapV8<K, V>
4448		* null if none.
4449		*
4450		* @param transformer a function returning the transformation
4451	<	* for an element, or null if there is no transformation (in
4452	<	* which case it is not combined)
4451	>	* for an element, or null of there is no transformation (in
4452	>	* which case it is not combined).
4453		* @param reducer a commutative associative combining function
4454		* @return the result of accumulating the given transformation
4455		* of all values
4456		*/
4457	<	public <U> U reduceValues(Fun<? super V, ? extends U> transformer,
4458	<	BiFun<? super U, ? super U, ? extends U> reducer) {
4459	<	return fjp.invoke(ForkJoinTasks.reduceValues
4460	<	(ConcurrentHashMapV8.this, transformer, reducer));
4457	>	public <U> U reduce(Fun<? super V, ? extends U> transformer,
4458	>	BiFun<? super U, ? super U, ? extends U> reducer) {
4459	>	return ForkJoinTasks.reduceValues
4460	>	(map, transformer, reducer).invoke();
4461		}
4462
4463		/**
#	Line 3986 | Line 4472 | public class ConcurrentHashMapV8<K, V>
4472		* @return the result of accumulating the given transformation
4473		* of all values
4474		*/
4475	<	public double reduceValuesToDouble(ObjectToDouble<? super V> transformer,
4476	<	double basis,
4477	<	DoubleByDoubleToDouble reducer) {
4478	<	return fjp.invoke(ForkJoinTasks.reduceValuesToDouble
4479	<	(ConcurrentHashMapV8.this, transformer, basis, reducer));
4475	>	public double reduceToDouble(ObjectToDouble<? super V> transformer,
4476	>	double basis,
4477	>	DoubleByDoubleToDouble reducer) {
4478	>	return ForkJoinTasks.reduceValuesToDouble
4479	>	(map, transformer, basis, reducer).invoke();
4480		}
4481
4482		/**
#	Line 4005 | Line 4491 | public class ConcurrentHashMapV8<K, V>
4491		* @return the result of accumulating the given transformation
4492		* of all values
4493		*/
4494	<	public long reduceValuesToLong(ObjectToLong<? super V> transformer,
4495	<	long basis,
4496	<	LongByLongToLong reducer) {
4497	<	return fjp.invoke(ForkJoinTasks.reduceValuesToLong
4498	<	(ConcurrentHashMapV8.this, transformer, basis, reducer));
4494	>	public long reduceToLong(ObjectToLong<? super V> transformer,
4495	>	long basis,
4496	>	LongByLongToLong reducer) {
4497	>	return ForkJoinTasks.reduceValuesToLong
4498	>	(map, transformer, basis, reducer).invoke();
4499		}
4500
4501		/**
#	Line 4024 | Line 4510 | public class ConcurrentHashMapV8<K, V>
4510		* @return the result of accumulating the given transformation
4511		* of all values
4512		*/
4513	<	public int reduceValuesToInt(ObjectToInt<? super V> transformer,
4514	<	int basis,
4515	<	IntByIntToInt reducer) {
4516	<	return fjp.invoke(ForkJoinTasks.reduceValuesToInt
4517	<	(ConcurrentHashMapV8.this, transformer, basis, reducer));
4513	>	public int reduceToInt(ObjectToInt<? super V> transformer,
4514	>	int basis,
4515	>	IntByIntToInt reducer) {
4516	>	return ForkJoinTasks.reduceValuesToInt
4517	>	(map, transformer, basis, reducer).invoke();
4518	>	}
4519	>
4520	>	}
4521	>
4522	>	/**
4523	>	* A view of a ConcurrentHashMapV8 as a {@link Set} of (key, value)
4524	>	* entries.  This class cannot be directly instantiated. See
4525	>	* {@link #entrySet}.
4526	>	*/
4527	>	public static final class EntrySetView<K,V> extends CHMView<K,V>
4528	>	implements Set<Map.Entry<K,V>> {
4529	>	EntrySetView(ConcurrentHashMapV8<K, V> map) { super(map); }
4530	>	public final boolean contains(Object o) {
4531	>	Object k, v, r; Map.Entry<?,?> e;
4532	>	return ((o instanceof Map.Entry) &&
4533	>	(k = (e = (Map.Entry<?,?>)o).getKey()) != null &&
4534	>	(r = map.get(k)) != null &&
4535	>	(v = e.getValue()) != null &&
4536	>	(v == r || v.equals(r)));
4537	>	}
4538	>	public final boolean remove(Object o) {
4539	>	Object k, v; Map.Entry<?,?> e;
4540	>	return ((o instanceof Map.Entry) &&
4541	>	(k = (e = (Map.Entry<?,?>)o).getKey()) != null &&
4542	>	(v = e.getValue()) != null &&
4543	>	map.remove(k, v));
4544	>	}
4545	>
4546	>	/**
4547	>	* Returns a "weakly consistent" iterator that will never
4548	>	* throw {@link ConcurrentModificationException}, and
4549	>	* guarantees to traverse elements as they existed upon
4550	>	* construction of the iterator, and may (but is not
4551	>	* guaranteed to) reflect any modifications subsequent to
4552	>	* construction.
4553	>	*
4554	>	* @return an iterator over the entries of this map
4555	>	*/
4556	>	public final Iterator<Map.Entry<K,V>> iterator() {
4557	>	return new EntryIterator<K,V>(map);
4558	>	}
4559	>
4560	>	public final boolean add(Entry<K,V> e) {
4561	>	K key = e.getKey();
4562	>	V value = e.getValue();
4563	>	if (key == null || value == null)
4564	>	throw new NullPointerException();
4565	>	return map.internalPut(key, value) == null;
4566	>	}
4567	>	public final boolean addAll(Collection<? extends Entry<K,V>> c) {
4568	>	boolean added = false;
4569	>	for (Entry<K,V> e : c) {
4570	>	if (add(e))
4571	>	added = true;
4572	>	}
4573	>	return added;
4574	>	}
4575	>	public boolean equals(Object o) {
4576	>	Set<?> c;
4577	>	return ((o instanceof Set) &&
4578	>	((c = (Set<?>)o) == this ||
4579	>	(containsAll(c) && c.containsAll(this))));
4580		}
4581
4582		/**
#	Line 4036 | Line 4584 | public class ConcurrentHashMapV8<K, V>
4584		*
4585		* @param action the action
4586		*/
4587	<	public void forEachEntry(Action<Map.Entry<K,V>> action) {
4588	<	fjp.invoke(ForkJoinTasks.forEachEntry
4589	<	(ConcurrentHashMapV8.this, action));
4587	>	public void forEach(Action<Map.Entry<K,V>> action) {
4588	>	ForkJoinTasks.forEachEntry
4589	>	(map, action).invoke();
4590		}
4591
4592		/**
#	Line 4046 | Line 4594 | public class ConcurrentHashMapV8<K, V>
4594		* of each entry.
4595		*
4596		* @param transformer a function returning the transformation
4597	<	* for an element, or null if there is no transformation (in
4598	<	* which case the action is not applied)
4597	>	* for an element, or null of there is no transformation (in
4598	>	* which case the action is not applied).
4599		* @param action the action
4600		*/
4601	<	public <U> void forEachEntry(Fun<Map.Entry<K,V>, ? extends U> transformer,
4602	<	Action<U> action) {
4603	<	fjp.invoke(ForkJoinTasks.forEachEntry
4604	<	(ConcurrentHashMapV8.this, transformer, action));
4601	>	public <U> void forEach(Fun<Map.Entry<K,V>, ? extends U> transformer,
4602	>	Action<U> action) {
4603	>	ForkJoinTasks.forEachEntry
4604	>	(map, transformer, action).invoke();
4605		}
4606
4607		/**
#	Line 4068 | Line 4616 | public class ConcurrentHashMapV8<K, V>
4616		* @return a non-null result from applying the given search
4617		* function on each entry, or null if none
4618		*/
4619	<	public <U> U searchEntries(Fun<Map.Entry<K,V>, ? extends U> searchFunction) {
4620	<	return fjp.invoke(ForkJoinTasks.searchEntries
4621	<	(ConcurrentHashMapV8.this, searchFunction));
4619	>	public <U> U search(Fun<Map.Entry<K,V>, ? extends U> searchFunction) {
4620	>	return ForkJoinTasks.searchEntries
4621	>	(map, searchFunction).invoke();
4622		}
4623
4624		/**
#	Line 4080 | Line 4628 | public class ConcurrentHashMapV8<K, V>
4628		* @param reducer a commutative associative combining function
4629		* @return the result of accumulating all entries
4630		*/
4631	<	public Map.Entry<K,V> reduceEntries(BiFun<Map.Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer) {
4632	<	return fjp.invoke(ForkJoinTasks.reduceEntries
4633	<	(ConcurrentHashMapV8.this, reducer));
4631	>	public Map.Entry<K,V> reduce(BiFun<Map.Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer) {
4632	>	return ForkJoinTasks.reduceEntries
4633	>	(map, reducer).invoke();
4634		}
4635
4636		/**
#	Line 4091 | Line 4639 | public class ConcurrentHashMapV8<K, V>
4639		* or null if none.
4640		*
4641		* @param transformer a function returning the transformation
4642	<	* for an element, or null if there is no transformation (in
4642	>	* for an element, or null of there is no transformation (in
4643		* which case it is not combined).
4644		* @param reducer a commutative associative combining function
4645		* @return the result of accumulating the given transformation
4646		* of all entries
4647		*/
4648	<	public <U> U reduceEntries(Fun<Map.Entry<K,V>, ? extends U> transformer,
4649	<	BiFun<? super U, ? super U, ? extends U> reducer) {
4650	<	return fjp.invoke(ForkJoinTasks.reduceEntries
4651	<	(ConcurrentHashMapV8.this, transformer, reducer));
4648	>	public <U> U reduce(Fun<Map.Entry<K,V>, ? extends U> transformer,
4649	>	BiFun<? super U, ? super U, ? extends U> reducer) {
4650	>	return ForkJoinTasks.reduceEntries
4651	>	(map, transformer, reducer).invoke();
4652		}
4653
4654		/**
#	Line 4115 | Line 4663 | public class ConcurrentHashMapV8<K, V>
4663		* @return the result of accumulating the given transformation
4664		* of all entries
4665		*/
4666	<	public double reduceEntriesToDouble(ObjectToDouble<Map.Entry<K,V>> transformer,
4667	<	double basis,
4668	<	DoubleByDoubleToDouble reducer) {
4669	<	return fjp.invoke(ForkJoinTasks.reduceEntriesToDouble
4670	<	(ConcurrentHashMapV8.this, transformer, basis, reducer));
4666	>	public double reduceToDouble(ObjectToDouble<Map.Entry<K,V>> transformer,
4667	>	double basis,
4668	>	DoubleByDoubleToDouble reducer) {
4669	>	return ForkJoinTasks.reduceEntriesToDouble
4670	>	(map, transformer, basis, reducer).invoke();
4671		}
4672
4673		/**
#	Line 4134 | Line 4682 | public class ConcurrentHashMapV8<K, V>
4682		* @return  the result of accumulating the given transformation
4683		* of all entries
4684		*/
4685	<	public long reduceEntriesToLong(ObjectToLong<Map.Entry<K,V>> transformer,
4686	<	long basis,
4687	<	LongByLongToLong reducer) {
4688	<	return fjp.invoke(ForkJoinTasks.reduceEntriesToLong
4689	<	(ConcurrentHashMapV8.this, transformer, basis, reducer));
4685	>	public long reduceToLong(ObjectToLong<Map.Entry<K,V>> transformer,
4686	>	long basis,
4687	>	LongByLongToLong reducer) {
4688	>	return ForkJoinTasks.reduceEntriesToLong
4689	>	(map, transformer, basis, reducer).invoke();
4690		}
4691
4692		/**
#	Line 4153 | Line 4701 | public class ConcurrentHashMapV8<K, V>
4701		* @return the result of accumulating the given transformation
4702		* of all entries
4703		*/
4704	<	public int reduceEntriesToInt(ObjectToInt<Map.Entry<K,V>> transformer,
4705	<	int basis,
4706	<	IntByIntToInt reducer) {
4707	<	return fjp.invoke(ForkJoinTasks.reduceEntriesToInt
4708	<	(ConcurrentHashMapV8.this, transformer, basis, reducer));
4704	>	public int reduceToInt(ObjectToInt<Map.Entry<K,V>> transformer,
4705	>	int basis,
4706	>	IntByIntToInt reducer) {
4707	>	return ForkJoinTasks.reduceEntriesToInt
4708	>	(map, transformer, basis, reducer).invoke();
4709		}
4710	+
4711		}
4712
4713		// ---------------------------------------------------------------------
4714
4715		/**
4716		* Predefined tasks for performing bulk parallel operations on
4717	<	* ConcurrentHashMaps. These tasks follow the forms and rules used
4718	<	* in class {@link Parallel}. Each method has the same name, but
4719	<	* returns a task rather than invoking it. These methods may be
4720	<	* useful in custom applications such as submitting a task without
4721	<	* waiting for completion, or combining with other tasks.
4717	>	* ConcurrentHashMapV8s. These tasks follow the forms and rules used
4718	>	* for bulk operations. Each method has the same name, but returns
4719	>	* a task rather than invoking it. These methods may be useful in
4720	>	* custom applications such as submitting a task without waiting
4721	>	* for completion, using a custom pool, or combining with other
4722	>	* tasks.
4723		*/
4724		public static class ForkJoinTasks {
4725		private ForkJoinTasks() {}
#	Line 4827 | Line 5377 | public class ConcurrentHashMapV8<K, V>
5377
5378		// -------------------------------------------------------
5379
4830	–	/**
4831	–	* Base for FJ tasks for bulk operations. This adds a variant of
4832	–	* CountedCompleters and some split and merge bookkeeping to
4833	–	* iterator functionality. The forEach and reduce methods are
4834	–	* similar to those illustrated in CountedCompleter documentation,
4835	–	* except that bottom-up reduction completions perform them within
4836	–	* their compute methods. The search methods are like forEach
4837	–	* except they continually poll for success and exit early.  Also,
4838	–	* exceptions are handled in a simpler manner, by just trying to
4839	–	* complete root task exceptionally.
4840	–	*/
4841	–	@SuppressWarnings("serial") static abstract class BulkTask<K,V,R> extends Traverser<K,V,R> {
4842	–	final BulkTask<K,V,?> parent;  // completion target
4843	–	int batch;                     // split control; -1 for unknown
4844	–	int pending;                   // completion control
4845	–
4846	–	BulkTask(ConcurrentHashMapV8<K,V> map, BulkTask<K,V,?> parent,
4847	–	int batch) {
4848	–	super(map);
4849	–	this.parent = parent;
4850	–	this.batch = batch;
4851	–	if (parent != null && map != null) { // split parent
4852	–	Node[] t;
4853	–	if ((t = parent.tab) == null &&
4854	–	(t = parent.tab = map.table) != null)
4855	–	parent.baseLimit = parent.baseSize = t.length;
4856	–	this.tab = t;
4857	–	this.baseSize = parent.baseSize;
4858	–	int hi = this.baseLimit = parent.baseLimit;
4859	–	parent.baseLimit = this.index = this.baseIndex =
4860	–	(hi + parent.baseIndex + 1) >>> 1;
4861	–	}
4862	–	}
4863	–
4864	–	// FJ methods
4865	–
4866	–	/**
4867	–	* Propagates completion. Note that all reduce actions
4868	–	* bypass this method to combine while completing.
4869	–	*/
4870	–	final void tryComplete() {
4871	–	BulkTask<K,V,?> a = this, s = a;
4872	–	for (int c;;) {
4873	–	if ((c = a.pending) == 0) {
4874	–	if ((a = (s = a).parent) == null) {
4875	–	s.quietlyComplete();
4876	–	break;
4877	–	}
4878	–	}
4879	–	else if (U.compareAndSwapInt(a, PENDING, c, c - 1))
4880	–	break;
4881	–	}
4882	–	}
4883	–
4884	–	/**
4885	–	* Forces root task to complete.
4886	–	* @param ex if null, complete normally, else exceptionally
4887	–	* @return false to simplify use
4888	–	*/
4889	–	final boolean tryCompleteComputation(Throwable ex) {
4890	–	for (BulkTask<K,V,?> a = this;;) {
4891	–	BulkTask<K,V,?> p = a.parent;
4892	–	if (p == null) {
4893	–	if (ex != null)
4894	–	a.completeExceptionally(ex);
4895	–	else
4896	–	a.quietlyComplete();
4897	–	return false;
4898	–	}
4899	–	a = p;
4900	–	}
4901	–	}
4902	–
4903	–	/**
4904	–	* Version of tryCompleteComputation for function screening checks
4905	–	*/
4906	–	final boolean abortOnNullFunction() {
4907	–	return tryCompleteComputation(new Error("Unexpected null function"));
4908	–	}
4909	–
4910	–	// utilities
4911	–
4912	–	/** CompareAndSet pending count */
4913	–	final boolean casPending(int cmp, int val) {
4914	–	return U.compareAndSwapInt(this, PENDING, cmp, val);
4915	–	}
4916	–
4917	–	/**
4918	–	* Returns approx exp2 of the number of times (minus one) to
4919	–	* split task by two before executing leaf action. This value
4920	–	* is faster to compute and more convenient to use as a guide
4921	–	* to splitting than is the depth, since it is used while
4922	–	* dividing by two anyway.
4923	–	*/
4924	–	final int batch() {
4925	–	ConcurrentHashMapV8<K, V> m; int b; Node[] t;
4926	–	if ((b = batch) < 0 && (m = map) != null) { // force initialization
4927	–	if ((t = tab) == null && (t = tab = m.table) != null)
4928	–	baseLimit = baseSize = t.length;
4929	–	if (t != null) {
4930	–	long n = m.counter.sum();
4931	–	int sp = getPool().getParallelism() << 3; // slack of 8
4932	–	b = batch = (n <= 0L) ? 0 : (n < (long)sp) ? (int)n : sp;
4933	–	}
4934	–	}
4935	–	return b;
4936	–	}
4937	–
4938	–	/**
4939	–	* Returns exportable snapshot entry.
4940	–	*/
4941	–	static <K,V> AbstractMap.SimpleEntry<K,V> entryFor(K k, V v) {
4942	–	return new AbstractMap.SimpleEntry<K,V>(k, v);
4943	–	}
4944	–
4945	–	// Unsafe mechanics
4946	–	private static final sun.misc.Unsafe U;
4947	–	private static final long PENDING;
4948	–	static {
4949	–	try {
4950	–	U = getUnsafe();
4951	–	PENDING = U.objectFieldOffset
4952	–	(BulkTask.class.getDeclaredField("pending"));
4953	–	} catch (Exception e) {
4954	–	throw new Error(e);
4955	–	}
4956	–	}
4957	–	}
4958	–
5380		/*
5381		* Task classes. Coded in a regular but ugly format/style to
5382		* simplify checks that each variant differs in the right way from
#	Line 4963 | Line 5384 | public class ConcurrentHashMapV8<K, V>
5384		*/
5385
5386		@SuppressWarnings("serial") static final class ForEachKeyTask<K,V>
5387	<	extends BulkTask<K,V,Void> {
5387	>	extends Traverser<K,V,Void> {
5388		final Action<K> action;
5389		ForEachKeyTask
5390	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5390	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5391		Action<K> action) {
5392		super(m, p, b);
5393		this.action = action;
5394		}
5395	<	@SuppressWarnings("unchecked") public final boolean exec() {
5396	<	final Action<K> action = this.action;
5397	<	if (action == null)
5398	<	return abortOnNullFunction();
5399	<	try {
5400	<	int b = batch(), c;
5401	<	while (b > 1 && baseIndex != baseLimit) {
5402	<	do {} while (!casPending(c = pending, c+1));
5403	<	new ForEachKeyTask<K,V>(map, this, b >>>= 1, action).fork();
4983	<	}
4984	<	while (advance() != null)
4985	<	action.apply((K)nextKey);
4986	<	tryComplete();
4987	<	} catch (Throwable ex) {
4988	<	return tryCompleteComputation(ex);
4989	<	}
4990	<	return false;
5395	>	@SuppressWarnings("unchecked") public final void compute() {
5396	>	final Action<K> action;
5397	>	if ((action = this.action) == null)
5398	>	throw new NullPointerException();
5399	>	for (int b; (b = preSplit()) > 0;)
5400	>	new ForEachKeyTask<K,V>(map, this, b, action).fork();
5401	>	while (advance() != null)
5402	>	action.apply((K)nextKey);
5403	>	propagateCompletion();
5404		}
5405		}
5406
5407		@SuppressWarnings("serial") static final class ForEachValueTask<K,V>
5408	<	extends BulkTask<K,V,Void> {
5408	>	extends Traverser<K,V,Void> {
5409		final Action<V> action;
5410		ForEachValueTask
5411	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5411	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5412		Action<V> action) {
5413		super(m, p, b);
5414		this.action = action;
5415		}
5416	<	@SuppressWarnings("unchecked") public final boolean exec() {
5417	<	final Action<V> action = this.action;
5418	<	if (action == null)
5419	<	return abortOnNullFunction();
5420	<	try {
5421	<	int b = batch(), c;
5422	<	while (b > 1 && baseIndex != baseLimit) {
5423	<	do {} while (!casPending(c = pending, c+1));
5424	<	new ForEachValueTask<K,V>(map, this, b >>>= 1, action).fork();
5425	<	}
5013	<	Object v;
5014	<	while ((v = advance()) != null)
5015	<	action.apply((V)v);
5016	<	tryComplete();
5017	<	} catch (Throwable ex) {
5018	<	return tryCompleteComputation(ex);
5019	<	}
5020	<	return false;
5416	>	@SuppressWarnings("unchecked") public final void compute() {
5417	>	final Action<V> action;
5418	>	if ((action = this.action) == null)
5419	>	throw new NullPointerException();
5420	>	for (int b; (b = preSplit()) > 0;)
5421	>	new ForEachValueTask<K,V>(map, this, b, action).fork();
5422	>	Object v;
5423	>	while ((v = advance()) != null)
5424	>	action.apply((V)v);
5425	>	propagateCompletion();
5426		}
5427		}
5428
5429		@SuppressWarnings("serial") static final class ForEachEntryTask<K,V>
5430	<	extends BulkTask<K,V,Void> {
5430	>	extends Traverser<K,V,Void> {
5431		final Action<Entry<K,V>> action;
5432		ForEachEntryTask
5433	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5433	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5434		Action<Entry<K,V>> action) {
5435		super(m, p, b);
5436		this.action = action;
5437		}
5438	<	@SuppressWarnings("unchecked") public final boolean exec() {
5439	<	final Action<Entry<K,V>> action = this.action;
5440	<	if (action == null)
5441	<	return abortOnNullFunction();
5442	<	try {
5443	<	int b = batch(), c;
5444	<	while (b > 1 && baseIndex != baseLimit) {
5445	<	do {} while (!casPending(c = pending, c+1));
5446	<	new ForEachEntryTask<K,V>(map, this, b >>>= 1, action).fork();
5447	<	}
5043	<	Object v;
5044	<	while ((v = advance()) != null)
5045	<	action.apply(entryFor((K)nextKey, (V)v));
5046	<	tryComplete();
5047	<	} catch (Throwable ex) {
5048	<	return tryCompleteComputation(ex);
5049	<	}
5050	<	return false;
5438	>	@SuppressWarnings("unchecked") public final void compute() {
5439	>	final Action<Entry<K,V>> action;
5440	>	if ((action = this.action) == null)
5441	>	throw new NullPointerException();
5442	>	for (int b; (b = preSplit()) > 0;)
5443	>	new ForEachEntryTask<K,V>(map, this, b, action).fork();
5444	>	Object v;
5445	>	while ((v = advance()) != null)
5446	>	action.apply(entryFor((K)nextKey, (V)v));
5447	>	propagateCompletion();
5448		}
5449		}
5450
5451		@SuppressWarnings("serial") static final class ForEachMappingTask<K,V>
5452	<	extends BulkTask<K,V,Void> {
5452	>	extends Traverser<K,V,Void> {
5453		final BiAction<K,V> action;
5454		ForEachMappingTask
5455	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5455	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5456		BiAction<K,V> action) {
5457		super(m, p, b);
5458		this.action = action;
5459		}
5460	<	@SuppressWarnings("unchecked") public final boolean exec() {
5461	<	final BiAction<K,V> action = this.action;
5462	<	if (action == null)
5463	<	return abortOnNullFunction();
5464	<	try {
5465	<	int b = batch(), c;
5466	<	while (b > 1 && baseIndex != baseLimit) {
5467	<	do {} while (!casPending(c = pending, c+1));
5468	<	new ForEachMappingTask<K,V>(map, this, b >>>= 1,
5469	<	action).fork();
5073	<	}
5074	<	Object v;
5075	<	while ((v = advance()) != null)
5076	<	action.apply((K)nextKey, (V)v);
5077	<	tryComplete();
5078	<	} catch (Throwable ex) {
5079	<	return tryCompleteComputation(ex);
5080	<	}
5081	<	return false;
5460	>	@SuppressWarnings("unchecked") public final void compute() {
5461	>	final BiAction<K,V> action;
5462	>	if ((action = this.action) == null)
5463	>	throw new NullPointerException();
5464	>	for (int b; (b = preSplit()) > 0;)
5465	>	new ForEachMappingTask<K,V>(map, this, b, action).fork();
5466	>	Object v;
5467	>	while ((v = advance()) != null)
5468	>	action.apply((K)nextKey, (V)v);
5469	>	propagateCompletion();
5470		}
5471		}
5472
5473		@SuppressWarnings("serial") static final class ForEachTransformedKeyTask<K,V,U>
5474	<	extends BulkTask<K,V,Void> {
5474	>	extends Traverser<K,V,Void> {
5475		final Fun<? super K, ? extends U> transformer;
5476		final Action<U> action;
5477		ForEachTransformedKeyTask
5478	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5479	<	Fun<? super K, ? extends U> transformer,
5092	<	Action<U> action) {
5478	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5479	>	Fun<? super K, ? extends U> transformer, Action<U> action) {
5480		super(m, p, b);
5481	<	this.transformer = transformer;
5095	<	this.action = action;
5096	<
5481	>	this.transformer = transformer; this.action = action;
5482		}
5483	<	@SuppressWarnings("unchecked") public final boolean exec() {
5484	<	final Fun<? super K, ? extends U> transformer =
5485	<	this.transformer;
5486	<	final Action<U> action = this.action;
5487	<	if (transformer == null || action == null)
5488	<	return abortOnNullFunction();
5489	<	try {
5490	<	int b = batch(), c;
5491	<	while (b > 1 && baseIndex != baseLimit) {
5492	<	do {} while (!casPending(c = pending, c+1));
5493	<	new ForEachTransformedKeyTask<K,V,U>
5494	<	(map, this, b >>>= 1, transformer, action).fork();
5495	<	}
5111	<	U u;
5112	<	while (advance() != null) {
5113	<	if ((u = transformer.apply((K)nextKey)) != null)
5114	<	action.apply(u);
5115	<	}
5116	<	tryComplete();
5117	<	} catch (Throwable ex) {
5118	<	return tryCompleteComputation(ex);
5483	>	@SuppressWarnings("unchecked") public final void compute() {
5484	>	final Fun<? super K, ? extends U> transformer;
5485	>	final Action<U> action;
5486	>	if ((transformer = this.transformer) == null ||
5487	>	(action = this.action) == null)
5488	>	throw new NullPointerException();
5489	>	for (int b; (b = preSplit()) > 0;)
5490	>	new ForEachTransformedKeyTask<K,V,U>
5491	>	(map, this, b, transformer, action).fork();
5492	>	U u;
5493	>	while (advance() != null) {
5494	>	if ((u = transformer.apply((K)nextKey)) != null)
5495	>	action.apply(u);
5496		}
5497	<	return false;
5497	>	propagateCompletion();
5498		}
5499		}
5500
5501		@SuppressWarnings("serial") static final class ForEachTransformedValueTask<K,V,U>
5502	<	extends BulkTask<K,V,Void> {
5502	>	extends Traverser<K,V,Void> {
5503		final Fun<? super V, ? extends U> transformer;
5504		final Action<U> action;
5505		ForEachTransformedValueTask
5506	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5507	<	Fun<? super V, ? extends U> transformer,
5131	<	Action<U> action) {
5506	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5507	>	Fun<? super V, ? extends U> transformer, Action<U> action) {
5508		super(m, p, b);
5509	<	this.transformer = transformer;
5134	<	this.action = action;
5135	<
5509	>	this.transformer = transformer; this.action = action;
5510		}
5511	<	@SuppressWarnings("unchecked") public final boolean exec() {
5512	<	final Fun<? super V, ? extends U> transformer =
5513	<	this.transformer;
5514	<	final Action<U> action = this.action;
5515	<	if (transformer == null || action == null)
5516	<	return abortOnNullFunction();
5517	<	try {
5518	<	int b = batch(), c;
5519	<	while (b > 1 && baseIndex != baseLimit) {
5520	<	do {} while (!casPending(c = pending, c+1));
5521	<	new ForEachTransformedValueTask<K,V,U>
5522	<	(map, this, b >>>= 1, transformer, action).fork();
5523	<	}
5150	<	Object v; U u;
5151	<	while ((v = advance()) != null) {
5152	<	if ((u = transformer.apply((V)v)) != null)
5153	<	action.apply(u);
5154	<	}
5155	<	tryComplete();
5156	<	} catch (Throwable ex) {
5157	<	return tryCompleteComputation(ex);
5511	>	@SuppressWarnings("unchecked") public final void compute() {
5512	>	final Fun<? super V, ? extends U> transformer;
5513	>	final Action<U> action;
5514	>	if ((transformer = this.transformer) == null ||
5515	>	(action = this.action) == null)
5516	>	throw new NullPointerException();
5517	>	for (int b; (b = preSplit()) > 0;)
5518	>	new ForEachTransformedValueTask<K,V,U>
5519	>	(map, this, b, transformer, action).fork();
5520	>	Object v; U u;
5521	>	while ((v = advance()) != null) {
5522	>	if ((u = transformer.apply((V)v)) != null)
5523	>	action.apply(u);
5524		}
5525	<	return false;
5525	>	propagateCompletion();
5526		}
5527		}
5528
5529		@SuppressWarnings("serial") static final class ForEachTransformedEntryTask<K,V,U>
5530	<	extends BulkTask<K,V,Void> {
5530	>	extends Traverser<K,V,Void> {
5531		final Fun<Map.Entry<K,V>, ? extends U> transformer;
5532		final Action<U> action;
5533		ForEachTransformedEntryTask
5534	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5535	<	Fun<Map.Entry<K,V>, ? extends U> transformer,
5170	<	Action<U> action) {
5534	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5535	>	Fun<Map.Entry<K,V>, ? extends U> transformer, Action<U> action) {
5536		super(m, p, b);
5537	<	this.transformer = transformer;
5173	<	this.action = action;
5174	<
5537	>	this.transformer = transformer; this.action = action;
5538		}
5539	<	@SuppressWarnings("unchecked") public final boolean exec() {
5540	<	final Fun<Map.Entry<K,V>, ? extends U> transformer =
5541	<	this.transformer;
5542	<	final Action<U> action = this.action;
5543	<	if (transformer == null || action == null)
5544	<	return abortOnNullFunction();
5545	<	try {
5546	<	int b = batch(), c;
5547	<	while (b > 1 && baseIndex != baseLimit) {
5548	<	do {} while (!casPending(c = pending, c+1));
5549	<	new ForEachTransformedEntryTask<K,V,U>
5550	<	(map, this, b >>>= 1, transformer, action).fork();
5551	<	}
5189	<	Object v; U u;
5190	<	while ((v = advance()) != null) {
5191	<	if ((u = transformer.apply(entryFor((K)nextKey, (V)v))) != null)
5192	<	action.apply(u);
5193	<	}
5194	<	tryComplete();
5195	<	} catch (Throwable ex) {
5196	<	return tryCompleteComputation(ex);
5539	>	@SuppressWarnings("unchecked") public final void compute() {
5540	>	final Fun<Map.Entry<K,V>, ? extends U> transformer;
5541	>	final Action<U> action;
5542	>	if ((transformer = this.transformer) == null ||
5543	>	(action = this.action) == null)
5544	>	throw new NullPointerException();
5545	>	for (int b; (b = preSplit()) > 0;)
5546	>	new ForEachTransformedEntryTask<K,V,U>
5547	>	(map, this, b, transformer, action).fork();
5548	>	Object v; U u;
5549	>	while ((v = advance()) != null) {
5550	>	if ((u = transformer.apply(entryFor((K)nextKey, (V)v))) != null)
5551	>	action.apply(u);
5552		}
5553	<	return false;
5553	>	propagateCompletion();
5554		}
5555		}
5556
5557		@SuppressWarnings("serial") static final class ForEachTransformedMappingTask<K,V,U>
5558	<	extends BulkTask<K,V,Void> {
5558	>	extends Traverser<K,V,Void> {
5559		final BiFun<? super K, ? super V, ? extends U> transformer;
5560		final Action<U> action;
5561		ForEachTransformedMappingTask
5562	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5562	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5563		BiFun<? super K, ? super V, ? extends U> transformer,
5564		Action<U> action) {
5565		super(m, p, b);
5566	<	this.transformer = transformer;
5212	<	this.action = action;
5213	<
5566	>	this.transformer = transformer; this.action = action;
5567		}
5568	<	@SuppressWarnings("unchecked") public final boolean exec() {
5569	<	final BiFun<? super K, ? super V, ? extends U> transformer =
5570	<	this.transformer;
5571	<	final Action<U> action = this.action;
5572	<	if (transformer == null || action == null)
5573	<	return abortOnNullFunction();
5574	<	try {
5575	<	int b = batch(), c;
5576	<	while (b > 1 && baseIndex != baseLimit) {
5577	<	do {} while (!casPending(c = pending, c+1));
5578	<	new ForEachTransformedMappingTask<K,V,U>
5579	<	(map, this, b >>>= 1, transformer, action).fork();
5580	<	}
5228	<	Object v; U u;
5229	<	while ((v = advance()) != null) {
5230	<	if ((u = transformer.apply((K)nextKey, (V)v)) != null)
5231	<	action.apply(u);
5232	<	}
5233	<	tryComplete();
5234	<	} catch (Throwable ex) {
5235	<	return tryCompleteComputation(ex);
5568	>	@SuppressWarnings("unchecked") public final void compute() {
5569	>	final BiFun<? super K, ? super V, ? extends U> transformer;
5570	>	final Action<U> action;
5571	>	if ((transformer = this.transformer) == null ||
5572	>	(action = this.action) == null)
5573	>	throw new NullPointerException();
5574	>	for (int b; (b = preSplit()) > 0;)
5575	>	new ForEachTransformedMappingTask<K,V,U>
5576	>	(map, this, b, transformer, action).fork();
5577	>	Object v; U u;
5578	>	while ((v = advance()) != null) {
5579	>	if ((u = transformer.apply((K)nextKey, (V)v)) != null)
5580	>	action.apply(u);
5581		}
5582	<	return false;
5582	>	propagateCompletion();
5583		}
5584		}
5585
5586		@SuppressWarnings("serial") static final class SearchKeysTask<K,V,U>
5587	<	extends BulkTask<K,V,U> {
5587	>	extends Traverser<K,V,U> {
5588		final Fun<? super K, ? extends U> searchFunction;
5589		final AtomicReference<U> result;
5590		SearchKeysTask
5591	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5591	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5592		Fun<? super K, ? extends U> searchFunction,
5593		AtomicReference<U> result) {
5594		super(m, p, b);
5595		this.searchFunction = searchFunction; this.result = result;
5596		}
5597	<	@SuppressWarnings("unchecked") public final boolean exec() {
5598	<	AtomicReference<U> result = this.result;
5599	<	final Fun<? super K, ? extends U> searchFunction =
5600	<	this.searchFunction;
5601	<	if (searchFunction == null || result == null)
5602	<	return abortOnNullFunction();
5603	<	try {
5604	<	int b = batch(), c;
5605	<	while (b > 1 && baseIndex != baseLimit && result.get() == null) {
5606	<	do {} while (!casPending(c = pending, c+1));
5607	<	new SearchKeysTask<K,V,U>(map, this, b >>>= 1,
5608	<	searchFunction, result).fork();
5609	<	}
5597	>	public final U getRawResult() { return result.get(); }
5598	>	@SuppressWarnings("unchecked") public final void compute() {
5599	>	final Fun<? super K, ? extends U> searchFunction;
5600	>	final AtomicReference<U> result;
5601	>	if ((searchFunction = this.searchFunction) == null ||
5602	>	(result = this.result) == null)
5603	>	throw new NullPointerException();
5604	>	for (int b;;) {
5605	>	if (result.get() != null)
5606	>	return;
5607	>	if ((b = preSplit()) <= 0)
5608	>	break;
5609	>	new SearchKeysTask<K,V,U>
5610	>	(map, this, b, searchFunction, result).fork();
5611	>	}
5612	>	while (result.get() == null) {
5613		U u;
5614	<	while (result.get() == null && advance() != null) {
5615	<	if ((u = searchFunction.apply((K)nextKey)) != null) {
5616	<	if (result.compareAndSet(null, u))
5617	<	tryCompleteComputation(null);
5618	<	break;
5619	<	}
5614	>	if (advance() == null) {
5615	>	propagateCompletion();
5616	>	break;
5617	>	}
5618	>	if ((u = searchFunction.apply((K)nextKey)) != null) {
5619	>	if (result.compareAndSet(null, u))
5620	>	quietlyCompleteRoot();
5621	>	break;
5622		}
5273	–	tryComplete();
5274	–	} catch (Throwable ex) {
5275	–	return tryCompleteComputation(ex);
5623		}
5277	–	return false;
5624		}
5279	–	public final U getRawResult() { return result.get(); }
5625		}
5626
5627		@SuppressWarnings("serial") static final class SearchValuesTask<K,V,U>
5628	<	extends BulkTask<K,V,U> {
5628	>	extends Traverser<K,V,U> {
5629		final Fun<? super V, ? extends U> searchFunction;
5630		final AtomicReference<U> result;
5631		SearchValuesTask
5632	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5632	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5633		Fun<? super V, ? extends U> searchFunction,
5634		AtomicReference<U> result) {
5635		super(m, p, b);
5636		this.searchFunction = searchFunction; this.result = result;
5637		}
5638	<	@SuppressWarnings("unchecked") public final boolean exec() {
5639	<	AtomicReference<U> result = this.result;
5640	<	final Fun<? super V, ? extends U> searchFunction =
5641	<	this.searchFunction;
5642	<	if (searchFunction == null || result == null)
5643	<	return abortOnNullFunction();
5644	<	try {
5645	<	int b = batch(), c;
5646	<	while (b > 1 && baseIndex != baseLimit && result.get() == null) {
5647	<	do {} while (!casPending(c = pending, c+1));
5648	<	new SearchValuesTask<K,V,U>(map, this, b >>>= 1,
5649	<	searchFunction, result).fork();
5650	<	}
5638	>	public final U getRawResult() { return result.get(); }
5639	>	@SuppressWarnings("unchecked") public final void compute() {
5640	>	final Fun<? super V, ? extends U> searchFunction;
5641	>	final AtomicReference<U> result;
5642	>	if ((searchFunction = this.searchFunction) == null ||
5643	>	(result = this.result) == null)
5644	>	throw new NullPointerException();
5645	>	for (int b;;) {
5646	>	if (result.get() != null)
5647	>	return;
5648	>	if ((b = preSplit()) <= 0)
5649	>	break;
5650	>	new SearchValuesTask<K,V,U>
5651	>	(map, this, b, searchFunction, result).fork();
5652	>	}
5653	>	while (result.get() == null) {
5654		Object v; U u;
5655	<	while (result.get() == null && (v = advance()) != null) {
5656	<	if ((u = searchFunction.apply((V)v)) != null) {
5657	<	if (result.compareAndSet(null, u))
5658	<	tryCompleteComputation(null);
5659	<	break;
5660	<	}
5655	>	if ((v = advance()) == null) {
5656	>	propagateCompletion();
5657	>	break;
5658	>	}
5659	>	if ((u = searchFunction.apply((V)v)) != null) {
5660	>	if (result.compareAndSet(null, u))
5661	>	quietlyCompleteRoot();
5662	>	break;
5663		}
5314	–	tryComplete();
5315	–	} catch (Throwable ex) {
5316	–	return tryCompleteComputation(ex);
5664		}
5318	–	return false;
5665		}
5320	–	public final U getRawResult() { return result.get(); }
5666		}
5667
5668		@SuppressWarnings("serial") static final class SearchEntriesTask<K,V,U>
5669	<	extends BulkTask<K,V,U> {
5669	>	extends Traverser<K,V,U> {
5670		final Fun<Entry<K,V>, ? extends U> searchFunction;
5671		final AtomicReference<U> result;
5672		SearchEntriesTask
5673	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5673	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5674		Fun<Entry<K,V>, ? extends U> searchFunction,
5675		AtomicReference<U> result) {
5676		super(m, p, b);
5677		this.searchFunction = searchFunction; this.result = result;
5678		}
5679	<	@SuppressWarnings("unchecked") public final boolean exec() {
5680	<	AtomicReference<U> result = this.result;
5681	<	final Fun<Entry<K,V>, ? extends U> searchFunction =
5682	<	this.searchFunction;
5683	<	if (searchFunction == null || result == null)
5684	<	return abortOnNullFunction();
5685	<	try {
5686	<	int b = batch(), c;
5687	<	while (b > 1 && baseIndex != baseLimit && result.get() == null) {
5688	<	do {} while (!casPending(c = pending, c+1));
5689	<	new SearchEntriesTask<K,V,U>(map, this, b >>>= 1,
5690	<	searchFunction, result).fork();
5691	<	}
5679	>	public final U getRawResult() { return result.get(); }
5680	>	@SuppressWarnings("unchecked") public final void compute() {
5681	>	final Fun<Entry<K,V>, ? extends U> searchFunction;
5682	>	final AtomicReference<U> result;
5683	>	if ((searchFunction = this.searchFunction) == null ||
5684	>	(result = this.result) == null)
5685	>	throw new NullPointerException();
5686	>	for (int b;;) {
5687	>	if (result.get() != null)
5688	>	return;
5689	>	if ((b = preSplit()) <= 0)
5690	>	break;
5691	>	new SearchEntriesTask<K,V,U>
5692	>	(map, this, b, searchFunction, result).fork();
5693	>	}
5694	>	while (result.get() == null) {
5695		Object v; U u;
5696	<	while (result.get() == null && (v = advance()) != null) {
5697	<	if ((u = searchFunction.apply(entryFor((K)nextKey, (V)v))) != null) {
5698	<	if (result.compareAndSet(null, u))
5699	<	tryCompleteComputation(null);
5700	<	break;
5701	<	}
5696	>	if ((v = advance()) == null) {
5697	>	propagateCompletion();
5698	>	break;
5699	>	}
5700	>	if ((u = searchFunction.apply(entryFor((K)nextKey, (V)v))) != null) {
5701	>	if (result.compareAndSet(null, u))
5702	>	quietlyCompleteRoot();
5703	>	return;
5704		}
5355	–	tryComplete();
5356	–	} catch (Throwable ex) {
5357	–	return tryCompleteComputation(ex);
5705		}
5359	–	return false;
5706		}
5361	–	public final U getRawResult() { return result.get(); }
5707		}
5708
5709		@SuppressWarnings("serial") static final class SearchMappingsTask<K,V,U>
5710	<	extends BulkTask<K,V,U> {
5710	>	extends Traverser<K,V,U> {
5711		final BiFun<? super K, ? super V, ? extends U> searchFunction;
5712		final AtomicReference<U> result;
5713		SearchMappingsTask
5714	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5714	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5715		BiFun<? super K, ? super V, ? extends U> searchFunction,
5716		AtomicReference<U> result) {
5717		super(m, p, b);
5718		this.searchFunction = searchFunction; this.result = result;
5719		}
5720	<	@SuppressWarnings("unchecked") public final boolean exec() {
5721	<	AtomicReference<U> result = this.result;
5722	<	final BiFun<? super K, ? super V, ? extends U> searchFunction =
5723	<	this.searchFunction;
5724	<	if (searchFunction == null || result == null)
5725	<	return abortOnNullFunction();
5726	<	try {
5727	<	int b = batch(), c;
5728	<	while (b > 1 && baseIndex != baseLimit && result.get() == null) {
5729	<	do {} while (!casPending(c = pending, c+1));
5730	<	new SearchMappingsTask<K,V,U>(map, this, b >>>= 1,
5731	<	searchFunction, result).fork();
5732	<	}
5720	>	public final U getRawResult() { return result.get(); }
5721	>	@SuppressWarnings("unchecked") public final void compute() {
5722	>	final BiFun<? super K, ? super V, ? extends U> searchFunction;
5723	>	final AtomicReference<U> result;
5724	>	if ((searchFunction = this.searchFunction) == null ||
5725	>	(result = this.result) == null)
5726	>	throw new NullPointerException();
5727	>	for (int b;;) {
5728	>	if (result.get() != null)
5729	>	return;
5730	>	if ((b = preSplit()) <= 0)
5731	>	break;
5732	>	new SearchMappingsTask<K,V,U>
5733	>	(map, this, b, searchFunction, result).fork();
5734	>	}
5735	>	while (result.get() == null) {
5736		Object v; U u;
5737	<	while (result.get() == null && (v = advance()) != null) {
5738	<	if ((u = searchFunction.apply((K)nextKey, (V)v)) != null) {
5739	<	if (result.compareAndSet(null, u))
5740	<	tryCompleteComputation(null);
5741	<	break;
5742	<	}
5737	>	if ((v = advance()) == null) {
5738	>	propagateCompletion();
5739	>	break;
5740	>	}
5741	>	if ((u = searchFunction.apply((K)nextKey, (V)v)) != null) {
5742	>	if (result.compareAndSet(null, u))
5743	>	quietlyCompleteRoot();
5744	>	break;
5745		}
5396	–	tryComplete();
5397	–	} catch (Throwable ex) {
5398	–	return tryCompleteComputation(ex);
5746		}
5400	–	return false;
5747		}
5402	–	public final U getRawResult() { return result.get(); }
5748		}
5749
5750		@SuppressWarnings("serial") static final class ReduceKeysTask<K,V>
5751	<	extends BulkTask<K,V,K> {
5751	>	extends Traverser<K,V,K> {
5752		final BiFun<? super K, ? super K, ? extends K> reducer;
5753		K result;
5754		ReduceKeysTask<K,V> rights, nextRight;
5755		ReduceKeysTask
5756	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5756	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5757		ReduceKeysTask<K,V> nextRight,
5758		BiFun<? super K, ? super K, ? extends K> reducer) {
5759		super(m, p, b); this.nextRight = nextRight;
5760		this.reducer = reducer;
5761		}
5762	<	@SuppressWarnings("unchecked") public final boolean exec() {
5762	>	public final K getRawResult() { return result; }
5763	>	@SuppressWarnings("unchecked") public final void compute() {
5764		final BiFun<? super K, ? super K, ? extends K> reducer =
5765		this.reducer;
5766		if (reducer == null)
5767	<	return abortOnNullFunction();
5768	<	try {
5769	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
5770	<	do {} while (!casPending(c = pending, c+1));
5771	<	(rights = new ReduceKeysTask<K,V>
5772	<	(map, this, b >>>= 1, rights, reducer)).fork();
5773	<	}
5774	<	K r = null;
5775	<	while (advance() != null) {
5776	<	K u = (K)nextKey;
5777	<	r = (r == null) ? u : reducer.apply(r, u);
5778	<	}
5779	<	result = r;
5780	<	for (ReduceKeysTask<K,V> t = this, s;;) {
5781	<	int c; BulkTask<K,V,?> par; K tr, sr;
5782	<	if ((c = t.pending) == 0) {
5783	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
5784	<	if ((sr = s.result) != null)
5785	<	t.result = ((tr = t.result) == null) ? sr : reducer.apply(tr, sr);
5786	<	}
5787	<	if ((par = t.parent) == null ||
5442	<	!(par instanceof ReduceKeysTask)) {
5443	<	t.quietlyComplete();
5444	<	break;
5445	<	}
5446	<	t = (ReduceKeysTask<K,V>)par;
5447	<	}
5448	<	else if (t.casPending(c, c - 1))
5449	<	break;
5767	>	throw new NullPointerException();
5768	>	for (int b; (b = preSplit()) > 0;)
5769	>	(rights = new ReduceKeysTask<K,V>
5770	>	(map, this, b, rights, reducer)).fork();
5771	>	K r = null;
5772	>	while (advance() != null) {
5773	>	K u = (K)nextKey;
5774	>	r = (r == null) ? u : reducer.apply(r, u);
5775	>	}
5776	>	result = r;
5777	>	CountedCompleter<?> c;
5778	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
5779	>	ReduceKeysTask<K,V>
5780	>	t = (ReduceKeysTask<K,V>)c,
5781	>	s = t.rights;
5782	>	while (s != null) {
5783	>	K tr, sr;
5784	>	if ((sr = s.result) != null)
5785	>	t.result = (((tr = t.result) == null) ? sr :
5786	>	reducer.apply(tr, sr));
5787	>	s = t.rights = s.nextRight;
5788		}
5451	–	} catch (Throwable ex) {
5452	–	return tryCompleteComputation(ex);
5789		}
5454	–	return false;
5790		}
5456	–	public final K getRawResult() { return result; }
5791		}
5792
5793		@SuppressWarnings("serial") static final class ReduceValuesTask<K,V>
5794	<	extends BulkTask<K,V,V> {
5794	>	extends Traverser<K,V,V> {
5795		final BiFun<? super V, ? super V, ? extends V> reducer;
5796		V result;
5797		ReduceValuesTask<K,V> rights, nextRight;
5798		ReduceValuesTask
5799	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5799	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5800		ReduceValuesTask<K,V> nextRight,
5801		BiFun<? super V, ? super V, ? extends V> reducer) {
5802		super(m, p, b); this.nextRight = nextRight;
5803		this.reducer = reducer;
5804		}
5805	<	@SuppressWarnings("unchecked") public final boolean exec() {
5805	>	public final V getRawResult() { return result; }
5806	>	@SuppressWarnings("unchecked") public final void compute() {
5807		final BiFun<? super V, ? super V, ? extends V> reducer =
5808		this.reducer;
5809		if (reducer == null)
5810	<	return abortOnNullFunction();
5811	<	try {
5812	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
5813	<	do {} while (!casPending(c = pending, c+1));
5814	<	(rights = new ReduceValuesTask<K,V>
5815	<	(map, this, b >>>= 1, rights, reducer)).fork();
5816	<	}
5817	<	V r = null;
5818	<	Object v;
5819	<	while ((v = advance()) != null) {
5820	<	V u = (V)v;
5821	<	r = (r == null) ? u : reducer.apply(r, u);
5822	<	}
5823	<	result = r;
5824	<	for (ReduceValuesTask<K,V> t = this, s;;) {
5825	<	int c; BulkTask<K,V,?> par; V tr, sr;
5826	<	if ((c = t.pending) == 0) {
5827	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
5828	<	if ((sr = s.result) != null)
5829	<	t.result = ((tr = t.result) == null) ? sr : reducer.apply(tr, sr);
5830	<	}
5831	<	if ((par = t.parent) == null ||
5497	<	!(par instanceof ReduceValuesTask)) {
5498	<	t.quietlyComplete();
5499	<	break;
5500	<	}
5501	<	t = (ReduceValuesTask<K,V>)par;
5502	<	}
5503	<	else if (t.casPending(c, c - 1))
5504	<	break;
5810	>	throw new NullPointerException();
5811	>	for (int b; (b = preSplit()) > 0;)
5812	>	(rights = new ReduceValuesTask<K,V>
5813	>	(map, this, b, rights, reducer)).fork();
5814	>	V r = null;
5815	>	Object v;
5816	>	while ((v = advance()) != null) {
5817	>	V u = (V)v;
5818	>	r = (r == null) ? u : reducer.apply(r, u);
5819	>	}
5820	>	result = r;
5821	>	CountedCompleter<?> c;
5822	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
5823	>	ReduceValuesTask<K,V>
5824	>	t = (ReduceValuesTask<K,V>)c,
5825	>	s = t.rights;
5826	>	while (s != null) {
5827	>	V tr, sr;
5828	>	if ((sr = s.result) != null)
5829	>	t.result = (((tr = t.result) == null) ? sr :
5830	>	reducer.apply(tr, sr));
5831	>	s = t.rights = s.nextRight;
5832		}
5506	–	} catch (Throwable ex) {
5507	–	return tryCompleteComputation(ex);
5833		}
5509	–	return false;
5834		}
5511	–	public final V getRawResult() { return result; }
5835		}
5836
5837		@SuppressWarnings("serial") static final class ReduceEntriesTask<K,V>
5838	<	extends BulkTask<K,V,Map.Entry<K,V>> {
5838	>	extends Traverser<K,V,Map.Entry<K,V>> {
5839		final BiFun<Map.Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer;
5840		Map.Entry<K,V> result;
5841		ReduceEntriesTask<K,V> rights, nextRight;
5842		ReduceEntriesTask
5843	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5843	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5844		ReduceEntriesTask<K,V> nextRight,
5845		BiFun<Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer) {
5846		super(m, p, b); this.nextRight = nextRight;
5847		this.reducer = reducer;
5848		}
5849	<	@SuppressWarnings("unchecked") public final boolean exec() {
5849	>	public final Map.Entry<K,V> getRawResult() { return result; }
5850	>	@SuppressWarnings("unchecked") public final void compute() {
5851		final BiFun<Map.Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer =
5852		this.reducer;
5853		if (reducer == null)
5854	<	return abortOnNullFunction();
5855	<	try {
5856	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
5857	<	do {} while (!casPending(c = pending, c+1));
5858	<	(rights = new ReduceEntriesTask<K,V>
5859	<	(map, this, b >>>= 1, rights, reducer)).fork();
5860	<	}
5861	<	Map.Entry<K,V> r = null;
5862	<	Object v;
5863	<	while ((v = advance()) != null) {
5864	<	Map.Entry<K,V> u = entryFor((K)nextKey, (V)v);
5865	<	r = (r == null) ? u : reducer.apply(r, u);
5866	<	}
5867	<	result = r;
5868	<	for (ReduceEntriesTask<K,V> t = this, s;;) {
5869	<	int c; BulkTask<K,V,?> par; Map.Entry<K,V> tr, sr;
5870	<	if ((c = t.pending) == 0) {
5871	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
5872	<	if ((sr = s.result) != null)
5873	<	t.result = ((tr = t.result) == null) ? sr : reducer.apply(tr, sr);
5874	<	}
5875	<	if ((par = t.parent) == null ||
5552	<	!(par instanceof ReduceEntriesTask)) {
5553	<	t.quietlyComplete();
5554	<	break;
5555	<	}
5556	<	t = (ReduceEntriesTask<K,V>)par;
5557	<	}
5558	<	else if (t.casPending(c, c - 1))
5559	<	break;
5854	>	throw new NullPointerException();
5855	>	for (int b; (b = preSplit()) > 0;)
5856	>	(rights = new ReduceEntriesTask<K,V>
5857	>	(map, this, b, rights, reducer)).fork();
5858	>	Map.Entry<K,V> r = null;
5859	>	Object v;
5860	>	while ((v = advance()) != null) {
5861	>	Map.Entry<K,V> u = entryFor((K)nextKey, (V)v);
5862	>	r = (r == null) ? u : reducer.apply(r, u);
5863	>	}
5864	>	result = r;
5865	>	CountedCompleter<?> c;
5866	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
5867	>	ReduceEntriesTask<K,V>
5868	>	t = (ReduceEntriesTask<K,V>)c,
5869	>	s = t.rights;
5870	>	while (s != null) {
5871	>	Map.Entry<K,V> tr, sr;
5872	>	if ((sr = s.result) != null)
5873	>	t.result = (((tr = t.result) == null) ? sr :
5874	>	reducer.apply(tr, sr));
5875	>	s = t.rights = s.nextRight;
5876		}
5561	–	} catch (Throwable ex) {
5562	–	return tryCompleteComputation(ex);
5877		}
5564	–	return false;
5878		}
5566	–	public final Map.Entry<K,V> getRawResult() { return result; }
5879		}
5880
5881		@SuppressWarnings("serial") static final class MapReduceKeysTask<K,V,U>
5882	<	extends BulkTask<K,V,U> {
5882	>	extends Traverser<K,V,U> {
5883		final Fun<? super K, ? extends U> transformer;
5884		final BiFun<? super U, ? super U, ? extends U> reducer;
5885		U result;
5886		MapReduceKeysTask<K,V,U> rights, nextRight;
5887		MapReduceKeysTask
5888	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5888	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5889		MapReduceKeysTask<K,V,U> nextRight,
5890		Fun<? super K, ? extends U> transformer,
5891		BiFun<? super U, ? super U, ? extends U> reducer) {
#	Line 5581 | Line 5893 | public class ConcurrentHashMapV8<K, V>
5893		this.transformer = transformer;
5894		this.reducer = reducer;
5895		}
5896	<	@SuppressWarnings("unchecked") public final boolean exec() {
5896	>	public final U getRawResult() { return result; }
5897	>	@SuppressWarnings("unchecked") public final void compute() {
5898		final Fun<? super K, ? extends U> transformer =
5899		this.transformer;
5900		final BiFun<? super U, ? super U, ? extends U> reducer =
5901		this.reducer;
5902		if (transformer == null || reducer == null)
5903	<	return abortOnNullFunction();
5904	<	try {
5905	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
5906	<	do {} while (!casPending(c = pending, c+1));
5907	<	(rights = new MapReduceKeysTask<K,V,U>
5908	<	(map, this, b >>>= 1, rights, transformer, reducer)).fork();
5909	<	}
5910	<	U r = null, u;
5911	<	while (advance() != null) {
5912	<	if ((u = transformer.apply((K)nextKey)) != null)
5913	<	r = (r == null) ? u : reducer.apply(r, u);
5914	<	}
5915	<	result = r;
5916	<	for (MapReduceKeysTask<K,V,U> t = this, s;;) {
5917	<	int c; BulkTask<K,V,?> par; U tr, sr;
5918	<	if ((c = t.pending) == 0) {
5919	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
5920	<	if ((sr = s.result) != null)
5921	<	t.result = ((tr = t.result) == null) ? sr : reducer.apply(tr, sr);
5922	<	}
5923	<	if ((par = t.parent) == null ||
5611	<	!(par instanceof MapReduceKeysTask)) {
5612	<	t.quietlyComplete();
5613	<	break;
5614	<	}
5615	<	t = (MapReduceKeysTask<K,V,U>)par;
5616	<	}
5617	<	else if (t.casPending(c, c - 1))
5618	<	break;
5903	>	throw new NullPointerException();
5904	>	for (int b; (b = preSplit()) > 0;)
5905	>	(rights = new MapReduceKeysTask<K,V,U>
5906	>	(map, this, b, rights, transformer, reducer)).fork();
5907	>	U r = null, u;
5908	>	while (advance() != null) {
5909	>	if ((u = transformer.apply((K)nextKey)) != null)
5910	>	r = (r == null) ? u : reducer.apply(r, u);
5911	>	}
5912	>	result = r;
5913	>	CountedCompleter<?> c;
5914	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
5915	>	MapReduceKeysTask<K,V,U>
5916	>	t = (MapReduceKeysTask<K,V,U>)c,
5917	>	s = t.rights;
5918	>	while (s != null) {
5919	>	U tr, sr;
5920	>	if ((sr = s.result) != null)
5921	>	t.result = (((tr = t.result) == null) ? sr :
5922	>	reducer.apply(tr, sr));
5923	>	s = t.rights = s.nextRight;
5924		}
5620	–	} catch (Throwable ex) {
5621	–	return tryCompleteComputation(ex);
5925		}
5623	–	return false;
5926		}
5625	–	public final U getRawResult() { return result; }
5927		}
5928
5929		@SuppressWarnings("serial") static final class MapReduceValuesTask<K,V,U>
5930	<	extends BulkTask<K,V,U> {
5930	>	extends Traverser<K,V,U> {
5931		final Fun<? super V, ? extends U> transformer;
5932		final BiFun<? super U, ? super U, ? extends U> reducer;
5933		U result;
5934		MapReduceValuesTask<K,V,U> rights, nextRight;
5935		MapReduceValuesTask
5936	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5936	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5937		MapReduceValuesTask<K,V,U> nextRight,
5938		Fun<? super V, ? extends U> transformer,
5939		BiFun<? super U, ? super U, ? extends U> reducer) {
#	Line 5640 | Line 5941 | public class ConcurrentHashMapV8<K, V>
5941		this.transformer = transformer;
5942		this.reducer = reducer;
5943		}
5944	<	@SuppressWarnings("unchecked") public final boolean exec() {
5944	>	public final U getRawResult() { return result; }
5945	>	@SuppressWarnings("unchecked") public final void compute() {
5946		final Fun<? super V, ? extends U> transformer =
5947		this.transformer;
5948		final BiFun<? super U, ? super U, ? extends U> reducer =
5949		this.reducer;
5950		if (transformer == null || reducer == null)
5951	<	return abortOnNullFunction();
5952	<	try {
5953	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
5954	<	do {} while (!casPending(c = pending, c+1));
5955	<	(rights = new MapReduceValuesTask<K,V,U>
5956	<	(map, this, b >>>= 1, rights, transformer, reducer)).fork();
5957	<	}
5958	<	U r = null, u;
5959	<	Object v;
5960	<	while ((v = advance()) != null) {
5961	<	if ((u = transformer.apply((V)v)) != null)
5962	<	r = (r == null) ? u : reducer.apply(r, u);
5963	<	}
5964	<	result = r;
5965	<	for (MapReduceValuesTask<K,V,U> t = this, s;;) {
5966	<	int c; BulkTask<K,V,?> par; U tr, sr;
5967	<	if ((c = t.pending) == 0) {
5968	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
5969	<	if ((sr = s.result) != null)
5970	<	t.result = ((tr = t.result) == null) ? sr : reducer.apply(tr, sr);
5971	<	}
5972	<	if ((par = t.parent) == null ||
5671	<	!(par instanceof MapReduceValuesTask)) {
5672	<	t.quietlyComplete();
5673	<	break;
5674	<	}
5675	<	t = (MapReduceValuesTask<K,V,U>)par;
5676	<	}
5677	<	else if (t.casPending(c, c - 1))
5678	<	break;
5951	>	throw new NullPointerException();
5952	>	for (int b; (b = preSplit()) > 0;)
5953	>	(rights = new MapReduceValuesTask<K,V,U>
5954	>	(map, this, b, rights, transformer, reducer)).fork();
5955	>	U r = null, u;
5956	>	Object v;
5957	>	while ((v = advance()) != null) {
5958	>	if ((u = transformer.apply((V)v)) != null)
5959	>	r = (r == null) ? u : reducer.apply(r, u);
5960	>	}
5961	>	result = r;
5962	>	CountedCompleter<?> c;
5963	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
5964	>	MapReduceValuesTask<K,V,U>
5965	>	t = (MapReduceValuesTask<K,V,U>)c,
5966	>	s = t.rights;
5967	>	while (s != null) {
5968	>	U tr, sr;
5969	>	if ((sr = s.result) != null)
5970	>	t.result = (((tr = t.result) == null) ? sr :
5971	>	reducer.apply(tr, sr));
5972	>	s = t.rights = s.nextRight;
5973		}
5680	–	} catch (Throwable ex) {
5681	–	return tryCompleteComputation(ex);
5974		}
5683	–	return false;
5975		}
5685	–	public final U getRawResult() { return result; }
5976		}
5977
5978		@SuppressWarnings("serial") static final class MapReduceEntriesTask<K,V,U>
5979	<	extends BulkTask<K,V,U> {
5979	>	extends Traverser<K,V,U> {
5980		final Fun<Map.Entry<K,V>, ? extends U> transformer;
5981		final BiFun<? super U, ? super U, ? extends U> reducer;
5982		U result;
5983		MapReduceEntriesTask<K,V,U> rights, nextRight;
5984		MapReduceEntriesTask
5985	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
5985	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
5986		MapReduceEntriesTask<K,V,U> nextRight,
5987		Fun<Map.Entry<K,V>, ? extends U> transformer,
5988		BiFun<? super U, ? super U, ? extends U> reducer) {
#	Line 5700 | Line 5990 | public class ConcurrentHashMapV8<K, V>
5990		this.transformer = transformer;
5991		this.reducer = reducer;
5992		}
5993	<	@SuppressWarnings("unchecked") public final boolean exec() {
5993	>	public final U getRawResult() { return result; }
5994	>	@SuppressWarnings("unchecked") public final void compute() {
5995		final Fun<Map.Entry<K,V>, ? extends U> transformer =
5996		this.transformer;
5997		final BiFun<? super U, ? super U, ? extends U> reducer =
5998		this.reducer;
5999		if (transformer == null || reducer == null)
6000	<	return abortOnNullFunction();
6001	<	try {
6002	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
6003	<	do {} while (!casPending(c = pending, c+1));
6004	<	(rights = new MapReduceEntriesTask<K,V,U>
6005	<	(map, this, b >>>= 1, rights, transformer, reducer)).fork();
6006	<	}
6007	<	U r = null, u;
6008	<	Object v;
6009	<	while ((v = advance()) != null) {
6010	<	if ((u = transformer.apply(entryFor((K)nextKey, (V)v))) != null)
6011	<	r = (r == null) ? u : reducer.apply(r, u);
6012	<	}
6013	<	result = r;
6014	<	for (MapReduceEntriesTask<K,V,U> t = this, s;;) {
6015	<	int c; BulkTask<K,V,?> par; U tr, sr;
6016	<	if ((c = t.pending) == 0) {
6017	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
6018	<	if ((sr = s.result) != null)
6019	<	t.result = ((tr = t.result) == null) ? sr : reducer.apply(tr, sr);
6020	<	}
6021	<	if ((par = t.parent) == null ||
5731	<	!(par instanceof MapReduceEntriesTask)) {
5732	<	t.quietlyComplete();
5733	<	break;
5734	<	}
5735	<	t = (MapReduceEntriesTask<K,V,U>)par;
5736	<	}
5737	<	else if (t.casPending(c, c - 1))
5738	<	break;
6000	>	throw new NullPointerException();
6001	>	for (int b; (b = preSplit()) > 0;)
6002	>	(rights = new MapReduceEntriesTask<K,V,U>
6003	>	(map, this, b, rights, transformer, reducer)).fork();
6004	>	U r = null, u;
6005	>	Object v;
6006	>	while ((v = advance()) != null) {
6007	>	if ((u = transformer.apply(entryFor((K)nextKey, (V)v))) != null)
6008	>	r = (r == null) ? u : reducer.apply(r, u);
6009	>	}
6010	>	result = r;
6011	>	CountedCompleter<?> c;
6012	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
6013	>	MapReduceEntriesTask<K,V,U>
6014	>	t = (MapReduceEntriesTask<K,V,U>)c,
6015	>	s = t.rights;
6016	>	while (s != null) {
6017	>	U tr, sr;
6018	>	if ((sr = s.result) != null)
6019	>	t.result = (((tr = t.result) == null) ? sr :
6020	>	reducer.apply(tr, sr));
6021	>	s = t.rights = s.nextRight;
6022		}
5740	–	} catch (Throwable ex) {
5741	–	return tryCompleteComputation(ex);
6023		}
5743	–	return false;
6024		}
5745	–	public final U getRawResult() { return result; }
6025		}
6026
6027		@SuppressWarnings("serial") static final class MapReduceMappingsTask<K,V,U>
6028	<	extends BulkTask<K,V,U> {
6028	>	extends Traverser<K,V,U> {
6029		final BiFun<? super K, ? super V, ? extends U> transformer;
6030		final BiFun<? super U, ? super U, ? extends U> reducer;
6031		U result;
6032		MapReduceMappingsTask<K,V,U> rights, nextRight;
6033		MapReduceMappingsTask
6034	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
6034	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
6035		MapReduceMappingsTask<K,V,U> nextRight,
6036		BiFun<? super K, ? super V, ? extends U> transformer,
6037		BiFun<? super U, ? super U, ? extends U> reducer) {
#	Line 5760 | Line 6039 | public class ConcurrentHashMapV8<K, V>
6039		this.transformer = transformer;
6040		this.reducer = reducer;
6041		}
6042	<	@SuppressWarnings("unchecked") public final boolean exec() {
6042	>	public final U getRawResult() { return result; }
6043	>	@SuppressWarnings("unchecked") public final void compute() {
6044		final BiFun<? super K, ? super V, ? extends U> transformer =
6045		this.transformer;
6046		final BiFun<? super U, ? super U, ? extends U> reducer =
6047		this.reducer;
6048		if (transformer == null || reducer == null)
6049	<	return abortOnNullFunction();
6050	<	try {
6051	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
6052	<	do {} while (!casPending(c = pending, c+1));
6053	<	(rights = new MapReduceMappingsTask<K,V,U>
6054	<	(map, this, b >>>= 1, rights, transformer, reducer)).fork();
6055	<	}
6056	<	U r = null, u;
6057	<	Object v;
6058	<	while ((v = advance()) != null) {
6059	<	if ((u = transformer.apply((K)nextKey, (V)v)) != null)
6060	<	r = (r == null) ? u : reducer.apply(r, u);
6061	<	}
6062	<	result = r;
6063	<	for (MapReduceMappingsTask<K,V,U> t = this, s;;) {
6064	<	int c; BulkTask<K,V,?> par; U tr, sr;
6065	<	if ((c = t.pending) == 0) {
6066	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
6067	<	if ((sr = s.result) != null)
6068	<	t.result = ((tr = t.result) == null) ? sr : reducer.apply(tr, sr);
6069	<	}
6070	<	if ((par = t.parent) == null ||
5791	<	!(par instanceof MapReduceMappingsTask)) {
5792	<	t.quietlyComplete();
5793	<	break;
5794	<	}
5795	<	t = (MapReduceMappingsTask<K,V,U>)par;
5796	<	}
5797	<	else if (t.casPending(c, c - 1))
5798	<	break;
6049	>	throw new NullPointerException();
6050	>	for (int b; (b = preSplit()) > 0;)
6051	>	(rights = new MapReduceMappingsTask<K,V,U>
6052	>	(map, this, b, rights, transformer, reducer)).fork();
6053	>	U r = null, u;
6054	>	Object v;
6055	>	while ((v = advance()) != null) {
6056	>	if ((u = transformer.apply((K)nextKey, (V)v)) != null)
6057	>	r = (r == null) ? u : reducer.apply(r, u);
6058	>	}
6059	>	result = r;
6060	>	CountedCompleter<?> c;
6061	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
6062	>	MapReduceMappingsTask<K,V,U>
6063	>	t = (MapReduceMappingsTask<K,V,U>)c,
6064	>	s = t.rights;
6065	>	while (s != null) {
6066	>	U tr, sr;
6067	>	if ((sr = s.result) != null)
6068	>	t.result = (((tr = t.result) == null) ? sr :
6069	>	reducer.apply(tr, sr));
6070	>	s = t.rights = s.nextRight;
6071		}
5800	–	} catch (Throwable ex) {
5801	–	return tryCompleteComputation(ex);
6072		}
5803	–	return false;
6073		}
5805	–	public final U getRawResult() { return result; }
6074		}
6075
6076		@SuppressWarnings("serial") static final class MapReduceKeysToDoubleTask<K,V>
6077	<	extends BulkTask<K,V,Double> {
6077	>	extends Traverser<K,V,Double> {
6078		final ObjectToDouble<? super K> transformer;
6079		final DoubleByDoubleToDouble reducer;
6080		final double basis;
6081		double result;
6082		MapReduceKeysToDoubleTask<K,V> rights, nextRight;
6083		MapReduceKeysToDoubleTask
6084	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
6084	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
6085		MapReduceKeysToDoubleTask<K,V> nextRight,
6086		ObjectToDouble<? super K> transformer,
6087		double basis,
#	Line 5822 | Line 6090 | public class ConcurrentHashMapV8<K, V>
6090		this.transformer = transformer;
6091		this.basis = basis; this.reducer = reducer;
6092		}
6093	<	@SuppressWarnings("unchecked") public final boolean exec() {
6093	>	public final Double getRawResult() { return result; }
6094	>	@SuppressWarnings("unchecked") public final void compute() {
6095		final ObjectToDouble<? super K> transformer =
6096		this.transformer;
6097		final DoubleByDoubleToDouble reducer = this.reducer;
6098		if (transformer == null || reducer == null)
6099	<	return abortOnNullFunction();
6100	<	try {
6101	<	final double id = this.basis;
6102	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
6103	<	do {} while (!casPending(c = pending, c+1));
6104	<	(rights = new MapReduceKeysToDoubleTask<K,V>
6105	<	(map, this, b >>>= 1, rights, transformer, id, reducer)).fork();
6106	<	}
6107	<	double r = id;
6108	<	while (advance() != null)
6109	<	r = reducer.apply(r, transformer.apply((K)nextKey));
6110	<	result = r;
6111	<	for (MapReduceKeysToDoubleTask<K,V> t = this, s;;) {
6112	<	int c; BulkTask<K,V,?> par;
6113	<	if ((c = t.pending) == 0) {
6114	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
5846	<	t.result = reducer.apply(t.result, s.result);
5847	<	}
5848	<	if ((par = t.parent) == null ||
5849	<	!(par instanceof MapReduceKeysToDoubleTask)) {
5850	<	t.quietlyComplete();
5851	<	break;
5852	<	}
5853	<	t = (MapReduceKeysToDoubleTask<K,V>)par;
5854	<	}
5855	<	else if (t.casPending(c, c - 1))
5856	<	break;
6099	>	throw new NullPointerException();
6100	>	double r = this.basis;
6101	>	for (int b; (b = preSplit()) > 0;)
6102	>	(rights = new MapReduceKeysToDoubleTask<K,V>
6103	>	(map, this, b, rights, transformer, r, reducer)).fork();
6104	>	while (advance() != null)
6105	>	r = reducer.apply(r, transformer.apply((K)nextKey));
6106	>	result = r;
6107	>	CountedCompleter<?> c;
6108	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
6109	>	MapReduceKeysToDoubleTask<K,V>
6110	>	t = (MapReduceKeysToDoubleTask<K,V>)c,
6111	>	s = t.rights;
6112	>	while (s != null) {
6113	>	t.result = reducer.apply(t.result, s.result);
6114	>	s = t.rights = s.nextRight;
6115		}
5858	–	} catch (Throwable ex) {
5859	–	return tryCompleteComputation(ex);
6116		}
5861	–	return false;
6117		}
5863	–	public final Double getRawResult() { return result; }
6118		}
6119
6120		@SuppressWarnings("serial") static final class MapReduceValuesToDoubleTask<K,V>
6121	<	extends BulkTask<K,V,Double> {
6121	>	extends Traverser<K,V,Double> {
6122		final ObjectToDouble<? super V> transformer;
6123		final DoubleByDoubleToDouble reducer;
6124		final double basis;
6125		double result;
6126		MapReduceValuesToDoubleTask<K,V> rights, nextRight;
6127		MapReduceValuesToDoubleTask
6128	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
6128	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
6129		MapReduceValuesToDoubleTask<K,V> nextRight,
6130		ObjectToDouble<? super V> transformer,
6131		double basis,
#	Line 5880 | Line 6134 | public class ConcurrentHashMapV8<K, V>
6134		this.transformer = transformer;
6135		this.basis = basis; this.reducer = reducer;
6136		}
6137	<	@SuppressWarnings("unchecked") public final boolean exec() {
6137	>	public final Double getRawResult() { return result; }
6138	>	@SuppressWarnings("unchecked") public final void compute() {
6139		final ObjectToDouble<? super V> transformer =
6140		this.transformer;
6141		final DoubleByDoubleToDouble reducer = this.reducer;
6142		if (transformer == null || reducer == null)
6143	<	return abortOnNullFunction();
6144	<	try {
6145	<	final double id = this.basis;
6146	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
6147	<	do {} while (!casPending(c = pending, c+1));
6148	<	(rights = new MapReduceValuesToDoubleTask<K,V>
6149	<	(map, this, b >>>= 1, rights, transformer, id, reducer)).fork();
6150	<	}
6151	<	double r = id;
6152	<	Object v;
6153	<	while ((v = advance()) != null)
6154	<	r = reducer.apply(r, transformer.apply((V)v));
6155	<	result = r;
6156	<	for (MapReduceValuesToDoubleTask<K,V> t = this, s;;) {
6157	<	int c; BulkTask<K,V,?> par;
6158	<	if ((c = t.pending) == 0) {
6159	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
5905	<	t.result = reducer.apply(t.result, s.result);
5906	<	}
5907	<	if ((par = t.parent) == null ||
5908	<	!(par instanceof MapReduceValuesToDoubleTask)) {
5909	<	t.quietlyComplete();
5910	<	break;
5911	<	}
5912	<	t = (MapReduceValuesToDoubleTask<K,V>)par;
5913	<	}
5914	<	else if (t.casPending(c, c - 1))
5915	<	break;
6143	>	throw new NullPointerException();
6144	>	double r = this.basis;
6145	>	for (int b; (b = preSplit()) > 0;)
6146	>	(rights = new MapReduceValuesToDoubleTask<K,V>
6147	>	(map, this, b, rights, transformer, r, reducer)).fork();
6148	>	Object v;
6149	>	while ((v = advance()) != null)
6150	>	r = reducer.apply(r, transformer.apply((V)v));
6151	>	result = r;
6152	>	CountedCompleter<?> c;
6153	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
6154	>	MapReduceValuesToDoubleTask<K,V>
6155	>	t = (MapReduceValuesToDoubleTask<K,V>)c,
6156	>	s = t.rights;
6157	>	while (s != null) {
6158	>	t.result = reducer.apply(t.result, s.result);
6159	>	s = t.rights = s.nextRight;
6160		}
5917	–	} catch (Throwable ex) {
5918	–	return tryCompleteComputation(ex);
6161		}
5920	–	return false;
6162		}
5922	–	public final Double getRawResult() { return result; }
6163		}
6164
6165		@SuppressWarnings("serial") static final class MapReduceEntriesToDoubleTask<K,V>
6166	<	extends BulkTask<K,V,Double> {
6166	>	extends Traverser<K,V,Double> {
6167		final ObjectToDouble<Map.Entry<K,V>> transformer;
6168		final DoubleByDoubleToDouble reducer;
6169		final double basis;
6170		double result;
6171		MapReduceEntriesToDoubleTask<K,V> rights, nextRight;
6172		MapReduceEntriesToDoubleTask
6173	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
6173	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
6174		MapReduceEntriesToDoubleTask<K,V> nextRight,
6175		ObjectToDouble<Map.Entry<K,V>> transformer,
6176		double basis,
#	Line 5939 | Line 6179 | public class ConcurrentHashMapV8<K, V>
6179		this.transformer = transformer;
6180		this.basis = basis; this.reducer = reducer;
6181		}
6182	<	@SuppressWarnings("unchecked") public final boolean exec() {
6182	>	public final Double getRawResult() { return result; }
6183	>	@SuppressWarnings("unchecked") public final void compute() {
6184		final ObjectToDouble<Map.Entry<K,V>> transformer =
6185		this.transformer;
6186		final DoubleByDoubleToDouble reducer = this.reducer;
6187		if (transformer == null || reducer == null)
6188	<	return abortOnNullFunction();
6189	<	try {
6190	<	final double id = this.basis;
6191	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
6192	<	do {} while (!casPending(c = pending, c+1));
6193	<	(rights = new MapReduceEntriesToDoubleTask<K,V>
6194	<	(map, this, b >>>= 1, rights, transformer, id, reducer)).fork();
6195	<	}
6196	<	double r = id;
6197	<	Object v;
6198	<	while ((v = advance()) != null)
6199	<	r = reducer.apply(r, transformer.apply(entryFor((K)nextKey, (V)v)));
6200	<	result = r;
6201	<	for (MapReduceEntriesToDoubleTask<K,V> t = this, s;;) {
6202	<	int c; BulkTask<K,V,?> par;
6203	<	if ((c = t.pending) == 0) {
6204	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
5964	<	t.result = reducer.apply(t.result, s.result);
5965	<	}
5966	<	if ((par = t.parent) == null ||
5967	<	!(par instanceof MapReduceEntriesToDoubleTask)) {
5968	<	t.quietlyComplete();
5969	<	break;
5970	<	}
5971	<	t = (MapReduceEntriesToDoubleTask<K,V>)par;
5972	<	}
5973	<	else if (t.casPending(c, c - 1))
5974	<	break;
6188	>	throw new NullPointerException();
6189	>	double r = this.basis;
6190	>	for (int b; (b = preSplit()) > 0;)
6191	>	(rights = new MapReduceEntriesToDoubleTask<K,V>
6192	>	(map, this, b, rights, transformer, r, reducer)).fork();
6193	>	Object v;
6194	>	while ((v = advance()) != null)
6195	>	r = reducer.apply(r, transformer.apply(entryFor((K)nextKey, (V)v)));
6196	>	result = r;
6197	>	CountedCompleter<?> c;
6198	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
6199	>	MapReduceEntriesToDoubleTask<K,V>
6200	>	t = (MapReduceEntriesToDoubleTask<K,V>)c,
6201	>	s = t.rights;
6202	>	while (s != null) {
6203	>	t.result = reducer.apply(t.result, s.result);
6204	>	s = t.rights = s.nextRight;
6205		}
5976	–	} catch (Throwable ex) {
5977	–	return tryCompleteComputation(ex);
6206		}
5979	–	return false;
6207		}
5981	–	public final Double getRawResult() { return result; }
6208		}
6209
6210		@SuppressWarnings("serial") static final class MapReduceMappingsToDoubleTask<K,V>
6211	<	extends BulkTask<K,V,Double> {
6211	>	extends Traverser<K,V,Double> {
6212		final ObjectByObjectToDouble<? super K, ? super V> transformer;
6213		final DoubleByDoubleToDouble reducer;
6214		final double basis;
6215		double result;
6216		MapReduceMappingsToDoubleTask<K,V> rights, nextRight;
6217		MapReduceMappingsToDoubleTask
6218	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
6218	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
6219		MapReduceMappingsToDoubleTask<K,V> nextRight,
6220		ObjectByObjectToDouble<? super K, ? super V> transformer,
6221		double basis,
#	Line 5998 | Line 6224 | public class ConcurrentHashMapV8<K, V>
6224		this.transformer = transformer;
6225		this.basis = basis; this.reducer = reducer;
6226		}
6227	<	@SuppressWarnings("unchecked") public final boolean exec() {
6227	>	public final Double getRawResult() { return result; }
6228	>	@SuppressWarnings("unchecked") public final void compute() {
6229		final ObjectByObjectToDouble<? super K, ? super V> transformer =
6230		this.transformer;
6231		final DoubleByDoubleToDouble reducer = this.reducer;
6232		if (transformer == null || reducer == null)
6233	<	return abortOnNullFunction();
6234	<	try {
6235	<	final double id = this.basis;
6236	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
6237	<	do {} while (!casPending(c = pending, c+1));
6238	<	(rights = new MapReduceMappingsToDoubleTask<K,V>
6239	<	(map, this, b >>>= 1, rights, transformer, id, reducer)).fork();
6240	<	}
6241	<	double r = id;
6242	<	Object v;
6243	<	while ((v = advance()) != null)
6244	<	r = reducer.apply(r, transformer.apply((K)nextKey, (V)v));
6245	<	result = r;
6246	<	for (MapReduceMappingsToDoubleTask<K,V> t = this, s;;) {
6247	<	int c; BulkTask<K,V,?> par;
6248	<	if ((c = t.pending) == 0) {
6249	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
6023	<	t.result = reducer.apply(t.result, s.result);
6024	<	}
6025	<	if ((par = t.parent) == null ||
6026	<	!(par instanceof MapReduceMappingsToDoubleTask)) {
6027	<	t.quietlyComplete();
6028	<	break;
6029	<	}
6030	<	t = (MapReduceMappingsToDoubleTask<K,V>)par;
6031	<	}
6032	<	else if (t.casPending(c, c - 1))
6033	<	break;
6233	>	throw new NullPointerException();
6234	>	double r = this.basis;
6235	>	for (int b; (b = preSplit()) > 0;)
6236	>	(rights = new MapReduceMappingsToDoubleTask<K,V>
6237	>	(map, this, b, rights, transformer, r, reducer)).fork();
6238	>	Object v;
6239	>	while ((v = advance()) != null)
6240	>	r = reducer.apply(r, transformer.apply((K)nextKey, (V)v));
6241	>	result = r;
6242	>	CountedCompleter<?> c;
6243	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
6244	>	MapReduceMappingsToDoubleTask<K,V>
6245	>	t = (MapReduceMappingsToDoubleTask<K,V>)c,
6246	>	s = t.rights;
6247	>	while (s != null) {
6248	>	t.result = reducer.apply(t.result, s.result);
6249	>	s = t.rights = s.nextRight;
6250		}
6035	–	} catch (Throwable ex) {
6036	–	return tryCompleteComputation(ex);
6251		}
6038	–	return false;
6252		}
6040	–	public final Double getRawResult() { return result; }
6253		}
6254
6255		@SuppressWarnings("serial") static final class MapReduceKeysToLongTask<K,V>
6256	<	extends BulkTask<K,V,Long> {
6256	>	extends Traverser<K,V,Long> {
6257		final ObjectToLong<? super K> transformer;
6258		final LongByLongToLong reducer;
6259		final long basis;
6260		long result;
6261		MapReduceKeysToLongTask<K,V> rights, nextRight;
6262		MapReduceKeysToLongTask
6263	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
6263	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
6264		MapReduceKeysToLongTask<K,V> nextRight,
6265		ObjectToLong<? super K> transformer,
6266		long basis,
#	Line 6057 | Line 6269 | public class ConcurrentHashMapV8<K, V>
6269		this.transformer = transformer;
6270		this.basis = basis; this.reducer = reducer;
6271		}
6272	<	@SuppressWarnings("unchecked") public final boolean exec() {
6272	>	public final Long getRawResult() { return result; }
6273	>	@SuppressWarnings("unchecked") public final void compute() {
6274		final ObjectToLong<? super K> transformer =
6275		this.transformer;
6276		final LongByLongToLong reducer = this.reducer;
6277		if (transformer == null || reducer == null)
6278	<	return abortOnNullFunction();
6279	<	try {
6280	<	final long id = this.basis;
6281	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
6282	<	do {} while (!casPending(c = pending, c+1));
6283	<	(rights = new MapReduceKeysToLongTask<K,V>
6284	<	(map, this, b >>>= 1, rights, transformer, id, reducer)).fork();
6285	<	}
6286	<	long r = id;
6287	<	while (advance() != null)
6288	<	r = reducer.apply(r, transformer.apply((K)nextKey));
6289	<	result = r;
6290	<	for (MapReduceKeysToLongTask<K,V> t = this, s;;) {
6291	<	int c; BulkTask<K,V,?> par;
6292	<	if ((c = t.pending) == 0) {
6293	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
6081	<	t.result = reducer.apply(t.result, s.result);
6082	<	}
6083	<	if ((par = t.parent) == null ||
6084	<	!(par instanceof MapReduceKeysToLongTask)) {
6085	<	t.quietlyComplete();
6086	<	break;
6087	<	}
6088	<	t = (MapReduceKeysToLongTask<K,V>)par;
6089	<	}
6090	<	else if (t.casPending(c, c - 1))
6091	<	break;
6278	>	throw new NullPointerException();
6279	>	long r = this.basis;
6280	>	for (int b; (b = preSplit()) > 0;)
6281	>	(rights = new MapReduceKeysToLongTask<K,V>
6282	>	(map, this, b, rights, transformer, r, reducer)).fork();
6283	>	while (advance() != null)
6284	>	r = reducer.apply(r, transformer.apply((K)nextKey));
6285	>	result = r;
6286	>	CountedCompleter<?> c;
6287	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
6288	>	MapReduceKeysToLongTask<K,V>
6289	>	t = (MapReduceKeysToLongTask<K,V>)c,
6290	>	s = t.rights;
6291	>	while (s != null) {
6292	>	t.result = reducer.apply(t.result, s.result);
6293	>	s = t.rights = s.nextRight;
6294		}
6093	–	} catch (Throwable ex) {
6094	–	return tryCompleteComputation(ex);
6295		}
6096	–	return false;
6296		}
6098	–	public final Long getRawResult() { return result; }
6297		}
6298
6299		@SuppressWarnings("serial") static final class MapReduceValuesToLongTask<K,V>
6300	<	extends BulkTask<K,V,Long> {
6300	>	extends Traverser<K,V,Long> {
6301		final ObjectToLong<? super V> transformer;
6302		final LongByLongToLong reducer;
6303		final long basis;
6304		long result;
6305		MapReduceValuesToLongTask<K,V> rights, nextRight;
6306		MapReduceValuesToLongTask
6307	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
6307	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
6308		MapReduceValuesToLongTask<K,V> nextRight,
6309		ObjectToLong<? super V> transformer,
6310		long basis,
#	Line 6115 | Line 6313 | public class ConcurrentHashMapV8<K, V>
6313		this.transformer = transformer;
6314		this.basis = basis; this.reducer = reducer;
6315		}
6316	<	@SuppressWarnings("unchecked") public final boolean exec() {
6316	>	public final Long getRawResult() { return result; }
6317	>	@SuppressWarnings("unchecked") public final void compute() {
6318		final ObjectToLong<? super V> transformer =
6319		this.transformer;
6320		final LongByLongToLong reducer = this.reducer;
6321		if (transformer == null || reducer == null)
6322	<	return abortOnNullFunction();
6323	<	try {
6324	<	final long id = this.basis;
6325	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
6326	<	do {} while (!casPending(c = pending, c+1));
6327	<	(rights = new MapReduceValuesToLongTask<K,V>
6328	<	(map, this, b >>>= 1, rights, transformer, id, reducer)).fork();
6329	<	}
6330	<	long r = id;
6331	<	Object v;
6332	<	while ((v = advance()) != null)
6333	<	r = reducer.apply(r, transformer.apply((V)v));
6334	<	result = r;
6335	<	for (MapReduceValuesToLongTask<K,V> t = this, s;;) {
6336	<	int c; BulkTask<K,V,?> par;
6337	<	if ((c = t.pending) == 0) {
6338	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
6140	<	t.result = reducer.apply(t.result, s.result);
6141	<	}
6142	<	if ((par = t.parent) == null ||
6143	<	!(par instanceof MapReduceValuesToLongTask)) {
6144	<	t.quietlyComplete();
6145	<	break;
6146	<	}
6147	<	t = (MapReduceValuesToLongTask<K,V>)par;
6148	<	}
6149	<	else if (t.casPending(c, c - 1))
6150	<	break;
6322	>	throw new NullPointerException();
6323	>	long r = this.basis;
6324	>	for (int b; (b = preSplit()) > 0;)
6325	>	(rights = new MapReduceValuesToLongTask<K,V>
6326	>	(map, this, b, rights, transformer, r, reducer)).fork();
6327	>	Object v;
6328	>	while ((v = advance()) != null)
6329	>	r = reducer.apply(r, transformer.apply((V)v));
6330	>	result = r;
6331	>	CountedCompleter<?> c;
6332	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
6333	>	MapReduceValuesToLongTask<K,V>
6334	>	t = (MapReduceValuesToLongTask<K,V>)c,
6335	>	s = t.rights;
6336	>	while (s != null) {
6337	>	t.result = reducer.apply(t.result, s.result);
6338	>	s = t.rights = s.nextRight;
6339		}
6152	–	} catch (Throwable ex) {
6153	–	return tryCompleteComputation(ex);
6340		}
6155	–	return false;
6341		}
6157	–	public final Long getRawResult() { return result; }
6342		}
6343
6344		@SuppressWarnings("serial") static final class MapReduceEntriesToLongTask<K,V>
6345	<	extends BulkTask<K,V,Long> {
6345	>	extends Traverser<K,V,Long> {
6346		final ObjectToLong<Map.Entry<K,V>> transformer;
6347		final LongByLongToLong reducer;
6348		final long basis;
6349		long result;
6350		MapReduceEntriesToLongTask<K,V> rights, nextRight;
6351		MapReduceEntriesToLongTask
6352	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
6352	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
6353		MapReduceEntriesToLongTask<K,V> nextRight,
6354		ObjectToLong<Map.Entry<K,V>> transformer,
6355		long basis,
#	Line 6174 | Line 6358 | public class ConcurrentHashMapV8<K, V>
6358		this.transformer = transformer;
6359		this.basis = basis; this.reducer = reducer;
6360		}
6361	<	@SuppressWarnings("unchecked") public final boolean exec() {
6361	>	public final Long getRawResult() { return result; }
6362	>	@SuppressWarnings("unchecked") public final void compute() {
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	<	(map, 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) {
6199	<	t.result = reducer.apply(t.result, s.result);
6200	<	}
6201	<	if ((par = t.parent) == null ||
6202	<	!(par instanceof MapReduceEntriesToLongTask)) {
6203	<	t.quietlyComplete();
6204	<	break;
6205	<	}
6206	<	t = (MapReduceEntriesToLongTask<K,V>)par;
6207	<	}
6208	<	else if (t.casPending(c, c - 1))
6209	<	break;
6367	>	throw new NullPointerException();
6368	>	long r = this.basis;
6369	>	for (int b; (b = preSplit()) > 0;)
6370	>	(rights = new MapReduceEntriesToLongTask<K,V>
6371	>	(map, this, b, rights, transformer, r, reducer)).fork();
6372	>	Object v;
6373	>	while ((v = advance()) != null)
6374	>	r = reducer.apply(r, transformer.apply(entryFor((K)nextKey, (V)v)));
6375	>	result = r;
6376	>	CountedCompleter<?> c;
6377	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
6378	>	MapReduceEntriesToLongTask<K,V>
6379	>	t = (MapReduceEntriesToLongTask<K,V>)c,
6380	>	s = t.rights;
6381	>	while (s != null) {
6382	>	t.result = reducer.apply(t.result, s.result);
6383	>	s = t.rights = s.nextRight;
6384		}
6211	–	} catch (Throwable ex) {
6212	–	return tryCompleteComputation(ex);
6385		}
6214	–	return false;
6386		}
6216	–	public final Long getRawResult() { return result; }
6387		}
6388
6389		@SuppressWarnings("serial") static final class MapReduceMappingsToLongTask<K,V>
6390	<	extends BulkTask<K,V,Long> {
6390	>	extends Traverser<K,V,Long> {
6391		final ObjectByObjectToLong<? super K, ? super V> transformer;
6392		final LongByLongToLong reducer;
6393		final long basis;
6394		long result;
6395		MapReduceMappingsToLongTask<K,V> rights, nextRight;
6396		MapReduceMappingsToLongTask
6397	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
6397	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
6398		MapReduceMappingsToLongTask<K,V> nextRight,
6399		ObjectByObjectToLong<? super K, ? super V> transformer,
6400		long basis,
#	Line 6233 | Line 6403 | public class ConcurrentHashMapV8<K, V>
6403		this.transformer = transformer;
6404		this.basis = basis; this.reducer = reducer;
6405		}
6406	<	@SuppressWarnings("unchecked") public final boolean exec() {
6406	>	public final Long getRawResult() { return result; }
6407	>	@SuppressWarnings("unchecked") public final void compute() {
6408		final ObjectByObjectToLong<? super K, ? super V> transformer =
6409		this.transformer;
6410		final LongByLongToLong reducer = this.reducer;
6411		if (transformer == null || reducer == null)
6412	<	return abortOnNullFunction();
6413	<	try {
6414	<	final long id = this.basis;
6415	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
6416	<	do {} while (!casPending(c = pending, c+1));
6417	<	(rights = new MapReduceMappingsToLongTask<K,V>
6418	<	(map, this, b >>>= 1, rights, transformer, id, reducer)).fork();
6419	<	}
6420	<	long r = id;
6421	<	Object v;
6422	<	while ((v = advance()) != null)
6423	<	r = reducer.apply(r, transformer.apply((K)nextKey, (V)v));
6424	<	result = r;
6425	<	for (MapReduceMappingsToLongTask<K,V> t = this, s;;) {
6426	<	int c; BulkTask<K,V,?> par;
6427	<	if ((c = t.pending) == 0) {
6428	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
6258	<	t.result = reducer.apply(t.result, s.result);
6259	<	}
6260	<	if ((par = t.parent) == null ||
6261	<	!(par instanceof MapReduceMappingsToLongTask)) {
6262	<	t.quietlyComplete();
6263	<	break;
6264	<	}
6265	<	t = (MapReduceMappingsToLongTask<K,V>)par;
6266	<	}
6267	<	else if (t.casPending(c, c - 1))
6268	<	break;
6412	>	throw new NullPointerException();
6413	>	long r = this.basis;
6414	>	for (int b; (b = preSplit()) > 0;)
6415	>	(rights = new MapReduceMappingsToLongTask<K,V>
6416	>	(map, this, b, rights, transformer, r, reducer)).fork();
6417	>	Object v;
6418	>	while ((v = advance()) != null)
6419	>	r = reducer.apply(r, transformer.apply((K)nextKey, (V)v));
6420	>	result = r;
6421	>	CountedCompleter<?> c;
6422	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
6423	>	MapReduceMappingsToLongTask<K,V>
6424	>	t = (MapReduceMappingsToLongTask<K,V>)c,
6425	>	s = t.rights;
6426	>	while (s != null) {
6427	>	t.result = reducer.apply(t.result, s.result);
6428	>	s = t.rights = s.nextRight;
6429		}
6270	–	} catch (Throwable ex) {
6271	–	return tryCompleteComputation(ex);
6430		}
6273	–	return false;
6431		}
6275	–	public final Long getRawResult() { return result; }
6432		}
6433
6434		@SuppressWarnings("serial") static final class MapReduceKeysToIntTask<K,V>
6435	<	extends BulkTask<K,V,Integer> {
6435	>	extends Traverser<K,V,Integer> {
6436		final ObjectToInt<? super K> transformer;
6437		final IntByIntToInt reducer;
6438		final int basis;
6439		int result;
6440		MapReduceKeysToIntTask<K,V> rights, nextRight;
6441		MapReduceKeysToIntTask
6442	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
6442	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
6443		MapReduceKeysToIntTask<K,V> nextRight,
6444		ObjectToInt<? super K> transformer,
6445		int basis,
#	Line 6292 | Line 6448 | public class ConcurrentHashMapV8<K, V>
6448		this.transformer = transformer;
6449		this.basis = basis; this.reducer = reducer;
6450		}
6451	<	@SuppressWarnings("unchecked") public final boolean exec() {
6451	>	public final Integer getRawResult() { return result; }
6452	>	@SuppressWarnings("unchecked") public final void compute() {
6453		final ObjectToInt<? super K> transformer =
6454		this.transformer;
6455		final IntByIntToInt reducer = this.reducer;
6456		if (transformer == null || reducer == null)
6457	<	return abortOnNullFunction();
6458	<	try {
6459	<	final int id = this.basis;
6460	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
6461	<	do {} while (!casPending(c = pending, c+1));
6462	<	(rights = new MapReduceKeysToIntTask<K,V>
6463	<	(map, this, b >>>= 1, rights, transformer, id, reducer)).fork();
6464	<	}
6465	<	int r = id;
6466	<	while (advance() != null)
6467	<	r = reducer.apply(r, transformer.apply((K)nextKey));
6468	<	result = r;
6469	<	for (MapReduceKeysToIntTask<K,V> t = this, s;;) {
6470	<	int c; BulkTask<K,V,?> par;
6471	<	if ((c = t.pending) == 0) {
6472	<	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 MapReduceKeysToIntTask)) {
6320	<	t.quietlyComplete();
6321	<	break;
6322	<	}
6323	<	t = (MapReduceKeysToIntTask<K,V>)par;
6324	<	}
6325	<	else if (t.casPending(c, c - 1))
6326	<	break;
6457	>	throw new NullPointerException();
6458	>	int r = this.basis;
6459	>	for (int b; (b = preSplit()) > 0;)
6460	>	(rights = new MapReduceKeysToIntTask<K,V>
6461	>	(map, this, b, rights, transformer, r, reducer)).fork();
6462	>	while (advance() != null)
6463	>	r = reducer.apply(r, transformer.apply((K)nextKey));
6464	>	result = r;
6465	>	CountedCompleter<?> c;
6466	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
6467	>	MapReduceKeysToIntTask<K,V>
6468	>	t = (MapReduceKeysToIntTask<K,V>)c,
6469	>	s = t.rights;
6470	>	while (s != null) {
6471	>	t.result = reducer.apply(t.result, s.result);
6472	>	s = t.rights = s.nextRight;
6473		}
6328	–	} catch (Throwable ex) {
6329	–	return tryCompleteComputation(ex);
6474		}
6331	–	return false;
6475		}
6333	–	public final Integer getRawResult() { return result; }
6476		}
6477
6478		@SuppressWarnings("serial") static final class MapReduceValuesToIntTask<K,V>
6479	<	extends BulkTask<K,V,Integer> {
6479	>	extends Traverser<K,V,Integer> {
6480		final ObjectToInt<? super V> transformer;
6481		final IntByIntToInt reducer;
6482		final int basis;
6483		int result;
6484		MapReduceValuesToIntTask<K,V> rights, nextRight;
6485		MapReduceValuesToIntTask
6486	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
6486	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
6487		MapReduceValuesToIntTask<K,V> nextRight,
6488		ObjectToInt<? super V> transformer,
6489		int basis,
#	Line 6350 | Line 6492 | public class ConcurrentHashMapV8<K, V>
6492		this.transformer = transformer;
6493		this.basis = basis; this.reducer = reducer;
6494		}
6495	<	@SuppressWarnings("unchecked") public final boolean exec() {
6495	>	public final Integer getRawResult() { return result; }
6496	>	@SuppressWarnings("unchecked") public final void compute() {
6497		final ObjectToInt<? super V> transformer =
6498		this.transformer;
6499		final IntByIntToInt reducer = this.reducer;
6500		if (transformer == null || reducer == null)
6501	<	return abortOnNullFunction();
6502	<	try {
6503	<	final int id = this.basis;
6504	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
6505	<	do {} while (!casPending(c = pending, c+1));
6506	<	(rights = new MapReduceValuesToIntTask<K,V>
6507	<	(map, this, b >>>= 1, rights, transformer, id, reducer)).fork();
6508	<	}
6509	<	int r = id;
6510	<	Object v;
6511	<	while ((v = advance()) != null)
6512	<	r = reducer.apply(r, transformer.apply((V)v));
6513	<	result = r;
6514	<	for (MapReduceValuesToIntTask<K,V> t = this, s;;) {
6515	<	int c; BulkTask<K,V,?> par;
6516	<	if ((c = t.pending) == 0) {
6517	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
6375	<	t.result = reducer.apply(t.result, s.result);
6376	<	}
6377	<	if ((par = t.parent) == null ||
6378	<	!(par instanceof MapReduceValuesToIntTask)) {
6379	<	t.quietlyComplete();
6380	<	break;
6381	<	}
6382	<	t = (MapReduceValuesToIntTask<K,V>)par;
6383	<	}
6384	<	else if (t.casPending(c, c - 1))
6385	<	break;
6501	>	throw new NullPointerException();
6502	>	int r = this.basis;
6503	>	for (int b; (b = preSplit()) > 0;)
6504	>	(rights = new MapReduceValuesToIntTask<K,V>
6505	>	(map, this, b, rights, transformer, r, reducer)).fork();
6506	>	Object v;
6507	>	while ((v = advance()) != null)
6508	>	r = reducer.apply(r, transformer.apply((V)v));
6509	>	result = r;
6510	>	CountedCompleter<?> c;
6511	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
6512	>	MapReduceValuesToIntTask<K,V>
6513	>	t = (MapReduceValuesToIntTask<K,V>)c,
6514	>	s = t.rights;
6515	>	while (s != null) {
6516	>	t.result = reducer.apply(t.result, s.result);
6517	>	s = t.rights = s.nextRight;
6518		}
6387	–	} catch (Throwable ex) {
6388	–	return tryCompleteComputation(ex);
6519		}
6390	–	return false;
6520		}
6392	–	public final Integer getRawResult() { return result; }
6521		}
6522
6523		@SuppressWarnings("serial") static final class MapReduceEntriesToIntTask<K,V>
6524	<	extends BulkTask<K,V,Integer> {
6524	>	extends Traverser<K,V,Integer> {
6525		final ObjectToInt<Map.Entry<K,V>> transformer;
6526		final IntByIntToInt reducer;
6527		final int basis;
6528		int result;
6529		MapReduceEntriesToIntTask<K,V> rights, nextRight;
6530		MapReduceEntriesToIntTask
6531	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
6531	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
6532		MapReduceEntriesToIntTask<K,V> nextRight,
6533		ObjectToInt<Map.Entry<K,V>> transformer,
6534		int basis,
#	Line 6409 | Line 6537 | public class ConcurrentHashMapV8<K, V>
6537		this.transformer = transformer;
6538		this.basis = basis; this.reducer = reducer;
6539		}
6540	<	@SuppressWarnings("unchecked") public final boolean exec() {
6540	>	public final Integer getRawResult() { return result; }
6541	>	@SuppressWarnings("unchecked") public final void compute() {
6542		final ObjectToInt<Map.Entry<K,V>> transformer =
6543		this.transformer;
6544		final IntByIntToInt reducer = this.reducer;
6545		if (transformer == null || reducer == null)
6546	<	return abortOnNullFunction();
6547	<	try {
6548	<	final int id = this.basis;
6549	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
6550	<	do {} while (!casPending(c = pending, c+1));
6551	<	(rights = new MapReduceEntriesToIntTask<K,V>
6552	<	(map, this, b >>>= 1, rights, transformer, id, reducer)).fork();
6553	<	}
6554	<	int r = id;
6555	<	Object v;
6556	<	while ((v = advance()) != null)
6557	<	r = reducer.apply(r, transformer.apply(entryFor((K)nextKey, (V)v)));
6558	<	result = r;
6559	<	for (MapReduceEntriesToIntTask<K,V> t = this, s;;) {
6560	<	int c; BulkTask<K,V,?> par;
6561	<	if ((c = t.pending) == 0) {
6562	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
6434	<	t.result = reducer.apply(t.result, s.result);
6435	<	}
6436	<	if ((par = t.parent) == null ||
6437	<	!(par instanceof MapReduceEntriesToIntTask)) {
6438	<	t.quietlyComplete();
6439	<	break;
6440	<	}
6441	<	t = (MapReduceEntriesToIntTask<K,V>)par;
6442	<	}
6443	<	else if (t.casPending(c, c - 1))
6444	<	break;
6546	>	throw new NullPointerException();
6547	>	int r = this.basis;
6548	>	for (int b; (b = preSplit()) > 0;)
6549	>	(rights = new MapReduceEntriesToIntTask<K,V>
6550	>	(map, this, b, rights, transformer, r, reducer)).fork();
6551	>	Object v;
6552	>	while ((v = advance()) != null)
6553	>	r = reducer.apply(r, transformer.apply(entryFor((K)nextKey, (V)v)));
6554	>	result = r;
6555	>	CountedCompleter<?> c;
6556	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
6557	>	MapReduceEntriesToIntTask<K,V>
6558	>	t = (MapReduceEntriesToIntTask<K,V>)c,
6559	>	s = t.rights;
6560	>	while (s != null) {
6561	>	t.result = reducer.apply(t.result, s.result);
6562	>	s = t.rights = s.nextRight;
6563		}
6446	–	} catch (Throwable ex) {
6447	–	return tryCompleteComputation(ex);
6564		}
6449	–	return false;
6565		}
6451	–	public final Integer getRawResult() { return result; }
6566		}
6567
6568		@SuppressWarnings("serial") static final class MapReduceMappingsToIntTask<K,V>
6569	<	extends BulkTask<K,V,Integer> {
6569	>	extends Traverser<K,V,Integer> {
6570		final ObjectByObjectToInt<? super K, ? super V> transformer;
6571		final IntByIntToInt reducer;
6572		final int basis;
6573		int result;
6574		MapReduceMappingsToIntTask<K,V> rights, nextRight;
6575		MapReduceMappingsToIntTask
6576	<	(ConcurrentHashMapV8<K,V> m, BulkTask<K,V,?> p, int b,
6577	<	MapReduceMappingsToIntTask<K,V> rights,
6576	>	(ConcurrentHashMapV8<K,V> m, Traverser<K,V,?> p, int b,
6577	>	MapReduceMappingsToIntTask<K,V> nextRight,
6578		ObjectByObjectToInt<? super K, ? super V> transformer,
6579		int basis,
6580		IntByIntToInt reducer) {
#	Line 6468 | Line 6582 | public class ConcurrentHashMapV8<K, V>
6582		this.transformer = transformer;
6583		this.basis = basis; this.reducer = reducer;
6584		}
6585	<	@SuppressWarnings("unchecked") public final boolean exec() {
6585	>	public final Integer getRawResult() { return result; }
6586	>	@SuppressWarnings("unchecked") public final void compute() {
6587		final ObjectByObjectToInt<? super K, ? super V> transformer =
6588		this.transformer;
6589		final IntByIntToInt reducer = this.reducer;
6590		if (transformer == null || reducer == null)
6591	<	return abortOnNullFunction();
6592	<	try {
6593	<	final int id = this.basis;
6594	<	for (int c, b = batch(); b > 1 && baseIndex != baseLimit;) {
6595	<	do {} while (!casPending(c = pending, c+1));
6596	<	(rights = new MapReduceMappingsToIntTask<K,V>
6597	<	(map, this, b >>>= 1, rights, transformer, id, reducer)).fork();
6598	<	}
6599	<	int r = id;
6600	<	Object v;
6601	<	while ((v = advance()) != null)
6602	<	r = reducer.apply(r, transformer.apply((K)nextKey, (V)v));
6603	<	result = r;
6604	<	for (MapReduceMappingsToIntTask<K,V> t = this, s;;) {
6605	<	int c; BulkTask<K,V,?> par;
6606	<	if ((c = t.pending) == 0) {
6607	<	for (s = t.rights; s != null; s = t.rights = s.nextRight) {
6493	<	t.result = reducer.apply(t.result, s.result);
6494	<	}
6495	<	if ((par = t.parent) == null ||
6496	<	!(par instanceof MapReduceMappingsToIntTask)) {
6497	<	t.quietlyComplete();
6498	<	break;
6499	<	}
6500	<	t = (MapReduceMappingsToIntTask<K,V>)par;
6501	<	}
6502	<	else if (t.casPending(c, c - 1))
6503	<	break;
6591	>	throw new NullPointerException();
6592	>	int r = this.basis;
6593	>	for (int b; (b = preSplit()) > 0;)
6594	>	(rights = new MapReduceMappingsToIntTask<K,V>
6595	>	(map, this, b, rights, transformer, r, reducer)).fork();
6596	>	Object v;
6597	>	while ((v = advance()) != null)
6598	>	r = reducer.apply(r, transformer.apply((K)nextKey, (V)v));
6599	>	result = r;
6600	>	CountedCompleter<?> c;
6601	>	for (c = firstComplete(); c != null; c = c.nextComplete()) {
6602	>	MapReduceMappingsToIntTask<K,V>
6603	>	t = (MapReduceMappingsToIntTask<K,V>)c,
6604	>	s = t.rights;
6605	>	while (s != null) {
6606	>	t.result = reducer.apply(t.result, s.result);
6607	>	s = t.rights = s.nextRight;
6608		}
6505	–	} catch (Throwable ex) {
6506	–	return tryCompleteComputation(ex);
6609		}
6508	–	return false;
6610		}
6510	–	public final Integer getRawResult() { return result; }
6611		}
6612
6513	–
6613		// Unsafe mechanics
6614		private static final sun.misc.Unsafe UNSAFE;
6615		private static final long counterOffset;

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