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root/jsr166/jsr166/src/test/loops/SimpleTimedLockLoops.java
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Comparing jsr166/src/test/loops/SimpleTimedLockLoops.java (file contents):
Revision 1.3 by dl, Mon Feb 19 00:46:06 2007 UTC vs.
Revision 1.8 by jsr166, Sat Dec 31 02:12:41 2016 UTC

# Line 1 | Line 1
1   /*
2   * Written by Doug Lea with assistance from members of JCP JSR-166
3   * Expert Group and released to the public domain, as explained at
4 < * http://creativecommons.org/licenses/publicdomain
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.concurrent.CyclicBarrier;
8 > import java.util.concurrent.ExecutorService;
9 > import java.util.concurrent.Executors;
10 > import java.util.concurrent.TimeUnit;
11 > import java.util.concurrent.locks.Lock;
12 > import java.util.concurrent.locks.ReentrantLock;
13  
14   public final class SimpleTimedLockLoops {
15      static final ExecutorService pool = Executors.newCachedThreadPool();
# Line 16 | Line 19 | public final class SimpleTimedLockLoops
19  
20      public static void main(String[] args) throws Exception {
21          int maxThreads = 100;
22 <        if (args.length > 0)
22 >        if (args.length > 0)
23              maxThreads = Integer.parseInt(args[0]);
24  
25          print = true;
# Line 48 | Line 51 | public final class SimpleTimedLockLoops
51          }
52  
53          final void test() throws Exception {
54 <            for (int i = 0; i < nthreads; ++i)
54 >            for (int i = 0; i < nthreads; ++i)
55                  pool.execute(this);
56              barrier.await();
57              barrier.await();
58              if (print) {
59                  long time = timer.getTime();
60 <                long tpi = time / ((long)iters * nthreads);
60 >                long tpi = time / ((long) iters * nthreads);
61                  System.out.print("\t" + LoopHelpers.rightJustify(tpi) + " ns per lock");
62 <                double secs = (double)(time) / 1000000000.0;
62 >                double secs = (double) time / 1000000000.0;
63                  System.out.println("\t " + secs + "s run time");
64              }
65  
# Line 68 | Line 71 | public final class SimpleTimedLockLoops
71          public final void run() {
72              final ReentrantLock lock = this.lock;
73              try {
74 <                barrier.await();
74 >                barrier.await();
75                  int sum = v + 1;
76                  int x = 0;
77                  int n = iters;
# Line 89 | Line 92 | public final class SimpleTimedLockLoops
92                          ++readBarrier;
93                      for (int l = x & 7; l > 0; --l)
94                          sum += LoopHelpers.compute6(sum);
95 <                }
95 >                }
96                  barrier.await();
97                  result += sum;
98              }
99 <            catch (Exception ie) {
100 <                return;
99 >            catch (Exception ie) {
100 >                return;
101              }
102          }
103      }

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