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root/jsr166/jsr166/src/test/loops/SimpleLoops.java
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Comparing jsr166/src/test/loops/SimpleLoops.java (file contents):
Revision 1.2 by dl, Mon Feb 19 00:46:06 2007 UTC vs.
Revision 1.7 by jsr166, Wed Dec 31 17:00:58 2014 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 + import java.util.*;
7   import java.util.concurrent.*;
8   import java.util.concurrent.locks.*;
8 – import java.util.*;
9  
10   public final class SimpleLoops {
11      static final ExecutorService pool = Executors.newCachedThreadPool();
# Line 15 | Line 15 | public final class SimpleLoops {
15  
16      public static void main(String[] args) throws Exception {
17          int maxThreads = 100;
18 <        if (args.length > 0)
18 >        if (args.length > 0)
19              maxThreads = Integer.parseInt(args[0]);
20  
21          print = true;
22  
23 <        int k = 1;
24 <        for (int i = 1; i <= maxThreads;) {
23 >        for (int k = 1, i = 1; i <= maxThreads;) {
24              System.out.print("Threads: " + 1);
25              new Loop(1).test();
26              Thread.sleep(100);
27              if (i == k) {
28                  k = i << 1;
29                  i = i + (i >>> 1);
30 <            }
31 <            else
30 >            }
31 >            else
32                  i = k;
33          }
34          pool.shutdown();
# Line 48 | Line 47 | public final class SimpleLoops {
47          }
48  
49          final void test() throws Exception {
50 <            for (int i = 0; i < nthreads; ++i)
50 >            for (int i = 0; i < nthreads; ++i)
51                  pool.execute(this);
52              barrier.await();
53              barrier.await();
54              if (print) {
55                  long time = timer.getTime();
56 <                long tpi = time / ((long)iters * nthreads);
56 >                long tpi = time / ((long) iters * nthreads);
57                  System.out.print("\t" + LoopHelpers.rightJustify(tpi) + " ns per lock");
58 <                double secs = (double)(time) / 1000000000.0;
58 >                double secs = (double) time / 1000000000.0;
59                  System.out.println("\t " + secs + "s run time");
60              }
61  
# Line 67 | Line 66 | public final class SimpleLoops {
66  
67          public final void run() {
68              try {
69 <                barrier.await();
69 >                barrier.await();
70                  int sum = v + 1;
71                  int x = 0;
72                  int n = iters;
# Line 84 | Line 83 | public final class SimpleLoops {
83                          ++readBarrier;
84                      for (int l = x & 7; l > 0; --l)
85                          sum += LoopHelpers.compute1(sum);
86 <                }
86 >                }
87                  barrier.await();
88                  result += sum;
89              }
90 <            catch (Exception ie) {
91 <                return;
90 >            catch (Exception ie) {
91 >                return;
92              }
93          }
94      }

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