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root/jsr166/jsr166/src/test/loops/LockLoops.java

Comparing jsr166/src/test/loops/LockLoops.java (file contents):
Revision 1.12 by jsr166, Wed Jun 8 20:01:45 2016 UTC vs.
Revision 1.14 by jsr166, Wed Jun 8 20:42:12 2016 UTC

#	Line 137 | Line 137 | public final class LockLoops {
137		System.out.print("StampedLockRead    ");
138		new StampedLockReadLoop().test(v, nthreads, iters);
139		Thread.sleep(10);
140	+
141	+	if (print)
142	+	System.out.print("StampedLockOptRead");
143	+	new StampedLockOptimisticReadLoop().test(v, nthreads, iters);
144	+	Thread.sleep(10);
145	+
146	+	if (print)
147	+	System.out.print("StampedLockReadWrite");
148	+	new StampedLockReadWriteLoop().test(v, nthreads, iters);
149	+	Thread.sleep(10);
150		}
151		}
152
#	Line 421 | Line 431 | public final class LockLoops {
431		}
432		sum += LoopHelpers.compute2(v);
433		}
434	+	return sum;
435	+	}
436	+	}
437	+
438	+	private static class StampedLockOptimisticReadLoop extends LockLoop {
439	+	private final StampedLock lock = new StampedLock();
440	+	final int loop(int n) {
441	+	int sum = 0;
442	+	while (n-- > 0) {
443	+	long stamp;
444	+	do {
445	+	stamp = lock.tryOptimisticRead();
446	+	v = LoopHelpers.compute1(v);
447	+	} while (!lock.validate(stamp));
448	+	sum += LoopHelpers.compute2(v);
449	+	}
450	+	return sum;
451	+	}
452	+	}
453	+
454	+	private static class StampedLockReadWriteLoop extends LockLoop {
455	+	private final StampedLock lock = new StampedLock();
456	+	final int loop(int n) {
457	+	int sum = 0;
458	+	while (n-- > 0) {
459	+	int x;
460	+	long stamp = lock.readLock();
461	+	try {
462	+	x = LoopHelpers.compute1(v);
463	+	}
464	+	finally {
465	+	lock.unlockRead(stamp);
466	+	}
467	+	stamp = lock.writeLock();
468	+	try {
469	+	v = x;
470	+	} finally {
471	+	lock.unlockWrite(stamp);
472	+	}
473	+	sum += LoopHelpers.compute2(v);
474	+	}
475		return sum;
476		}
477		}

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