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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 1.6 by jsr166, Sat Dec 31 22:17:40 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.ExecutorService;
10	>	import java.util.concurrent.Executors;
11	>	import java.util.concurrent.TimeUnit;
12	>	import java.util.concurrent.locks.ReentrantLock;
13
14		/**
15		* Measures repeated futile timed attempts to acquire a ReentrantLock.
#	Line 51 | Line 54 | public final class FutileTimedTryLockLoo
54		continue nextArg;
55		}
56		}
57	<	throw new Error("Usage: FutileTimedTryLockLoops minThreads=n maxThreads=n Threads=n nanos=n iters=n");
57	>	throw new Error("Usage: FutileTimedTryLockLoops minThreads=n maxThreads=n threads=n nanos=n iters=n");
58		}
59		final ExecutorService pool = Executors.newCachedThreadPool();
60		final ReentrantLock lock = new ReentrantLock();
#	Line 59 | Line 62 | public final class FutileTimedTryLockLoo
62		lock.lock();
63
64		for (int i = minThreads; i <= maxThreads; i += (i+1) >>> 1) {
65	+	// warmup
66	+	if (i == minThreads)
67	+	pool.invokeAll(Collections.nCopies(i, task));
68	+
69		long startTime = System.nanoTime();
70		pool.invokeAll(Collections.nCopies(i, task));
71		long elapsed = System.nanoTime() - startTime;

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