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*/ |
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7 |
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package jsr166e; |
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– |
import java.io.IOException; |
8 |
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import java.io.Serializable; |
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import java.io.ObjectInputStream; |
11 |
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import java.io.ObjectOutputStream; |
9 |
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10 |
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/** |
11 |
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* One or more variables that together maintain a running {@code long} |
48 |
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* @param x the value to update |
49 |
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*/ |
50 |
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public void update(long x) { |
51 |
< |
Cell[] as; long b, v; HashCode hc; Cell a; int n; |
51 |
> |
Cell[] as; long b, v; int[] hc; Cell a; int n; |
52 |
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if ((as = cells) != null || |
53 |
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(b = base) < x && !casBase(b, x)) { |
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boolean uncontended = true; |
55 |
< |
int h = (hc = threadHashCode.get()).code; |
56 |
< |
if (as == null || (n = as.length) < 1 || |
57 |
< |
(a = as[(n - 1) & h]) == null || |
55 |
> |
if ((hc = threadHashCode.get()) == null || |
56 |
> |
as == null || (n = as.length) < 1 || |
57 |
> |
(a = as[(n - 1) & hc[0]]) == null || |
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((v = a.value) < x && !(uncontended = a.cas(v, x)))) |
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retryUpdate(x, hc, uncontended); |
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} |
62 |
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/** |
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* Returns the current maximum. The returned value is |
65 |
< |
* <em>NOT</em> an atomic snapshot: Invocation in the absence of |
65 |
> |
* <em>NOT</em> an atomic snapshot; invocation in the absence of |
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* concurrent updates returns an accurate result, but concurrent |
67 |
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* updates that occur while the value is being calculated might |
68 |
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* not be incorporated. |
172 |
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s.writeLong(max()); |
173 |
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} |
174 |
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|
175 |
< |
private void readObject(ObjectInputStream s) |
176 |
< |
throws IOException, ClassNotFoundException { |
175 |
> |
private void readObject(java.io.ObjectInputStream s) |
176 |
> |
throws java.io.IOException, ClassNotFoundException { |
177 |
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s.defaultReadObject(); |
178 |
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busy = 0; |
179 |
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cells = null; |