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root/jsr166/jsr166/src/main/java/util/concurrent/Semaphore.java

Comparing jsr166/src/main/java/util/concurrent/Semaphore.java (file contents):
Revision 1.53 by jsr166, Sun May 18 23:47:56 2008 UTC vs.
Revision 1.54 by jsr166, Wed Apr 7 19:24:40 2010 UTC

#	Line 162 | Line 162 | public class Semaphore implements java.i
162
163		protected final boolean tryReleaseShared(int releases) {
164		for (;;) {
165	<	int p = getState();
166	<	if (compareAndSetState(p, p + releases))
165	>	int current = getState();
166	>	int next = current + releases;
167	>	if (next < current) // overflow
168	>	throw new Error("Maximum permit count exceeded");
169	>	if (compareAndSetState(current, next))
170		return true;
171		}
172		}
#	Line 172 | Line 175 | public class Semaphore implements java.i
175		for (;;) {
176		int current = getState();
177		int next = current - reductions;
178	+	if (next > current) // underflow
179	+	throw new Error("Permit count underflow");
180		if (compareAndSetState(current, next))
181		return;
182		}

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