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

Comparing jsr166/src/test/loops/FutileTimedTryLockLoops.java (file contents):
Revision 1.1 by jsr166, Mon Dec 22 06:29:44 2014 UTC vs.
Revision 1.4 by jsr166, Mon Jan 26 17:40:39 2015 UTC

#	Line 4 | Line 4
4		* http://creativecommons.org/publicdomain/zero/1.0/
5		*/
6
7	+	import java.util.*;
8		import java.util.concurrent.*;
9		import java.util.concurrent.locks.*;
9	–	import java.util.*;
10
11		/**
12		* Measures repeated futile timed attempts to acquire a ReentrantLock.
#	Line 51 | Line 51 | public final class FutileTimedTryLockLoo
51		continue nextArg;
52		}
53		}
54	<	throw new Error("Usage: FutileTimedTryLockLoops minThreads=n maxThreads=n Threads=n nanos=n iters=n");
54	>	throw new Error("Usage: FutileTimedTryLockLoops minThreads=n maxThreads=n threads=n nanos=n iters=n");
55		}
56		final ExecutorService pool = Executors.newCachedThreadPool();
57		final ReentrantLock lock = new ReentrantLock();
#	Line 59 | Line 59 | public final class FutileTimedTryLockLoo
59		lock.lock();
60
61		for (int i = minThreads; i <= maxThreads; i += (i+1) >>> 1) {
62	+	// warmup
63	+	if (i == minThreads)
64	+	pool.invokeAll(Collections.nCopies(i, task));
65	+
66		long startTime = System.nanoTime();
67		pool.invokeAll(Collections.nCopies(i, task));
68		long elapsed = System.nanoTime() - startTime;

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