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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 1.5 by jsr166, Sat Dec 31 18:54:28 2016 UTC

#	Line 4 | Line 4
4		* http://creativecommons.org/publicdomain/zero/1.0/
5		*/
6
7	<	import java.util.concurrent.*;
8	<	import java.util.concurrent.locks.*;
9	<	import java.util.*;
7	>	import java.util.Collections;
8	>	import java.util.concurrent.Callable;
9	>	import java.util.concurrent.CyclicBarrier;
10	>	import java.util.concurrent.ExecutorService;
11	>	import java.util.concurrent.Executors;
12	>	import java.util.concurrent.TimeUnit;
13	>	import java.util.concurrent.locks.ReentrantLock;
14
15		/**
16		* Measures repeated futile timed attempts to acquire a ReentrantLock.
#	Line 51 | Line 55 | public final class FutileTimedTryLockLoo
55		continue nextArg;
56		}
57		}
58	<	throw new Error("Usage: FutileTimedTryLockLoops minThreads=n maxThreads=n Threads=n nanos=n iters=n");
58	>	throw new Error("Usage: FutileTimedTryLockLoops minThreads=n maxThreads=n threads=n nanos=n iters=n");
59		}
60		final ExecutorService pool = Executors.newCachedThreadPool();
61		final ReentrantLock lock = new ReentrantLock();
#	Line 59 | Line 63 | public final class FutileTimedTryLockLoo
63		lock.lock();
64
65		for (int i = minThreads; i <= maxThreads; i += (i+1) >>> 1) {
66	+	// warmup
67	+	if (i == minThreads)
68	+	pool.invokeAll(Collections.nCopies(i, task));
69	+
70		long startTime = System.nanoTime();
71		pool.invokeAll(Collections.nCopies(i, task));
72		long elapsed = System.nanoTime() - startTime;

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