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Comparing jsr166/src/test/loops/NoopLockLoops.java (file contents):
Revision 1.1 by dl, Mon May 2 19:19:38 2005 UTC vs.
Revision 1.6 by jsr166, Tue Mar 15 19:47:05 2011 UTC

# Line 1 | Line 1
1   /*
2 – * @test
3 – * @synopsis multiple threads using a single builtin lock
4 – */
5 – /*
2   * Written by Doug Lea with assistance from members of JCP JSR-166
3 < * Expert Group and released to the public domain. Use, modify, and
4 < * redistribute this code in any way without acknowledgement.
3 > * Expert Group and released to the public domain, as explained at
4 > * http://creativecommons.org/publicdomain/zero/1.0/
5   */
6  
7   import java.util.concurrent.*;
# Line 20 | Line 16 | public final class NoopLockLoops {
16  
17      public static void main(String[] args) throws Exception {
18          int maxThreads = 100;
19 <        if (args.length > 0)
19 >        if (args.length > 0)
20              maxThreads = Integer.parseInt(args[0]);
21  
22          new ReentrantLockLoop(1).test();
# Line 35 | Line 31 | public final class NoopLockLoops {
31              if (i == k) {
32                  k = i << 1;
33                  i = i + (i >>> 1);
34 <            }
35 <            else
34 >            }
35 >            else
36                  i = k;
37          }
38          pool.shutdown();
# Line 55 | Line 51 | public final class NoopLockLoops {
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 74 | Line 70 | public final class NoopLockLoops {
70  
71          public final void run() {
72              try {
73 <                barrier.await();
73 >                barrier.await();
74                  int sum = v + 1;
75                  int x = sum + 1;
76                  int n = iters;
77                  while (n-- > 0) {
78 <                    synchronized(this) {
78 >                    synchronized (this) {
79                          x = LoopHelpers.compute4(x);
80                      }
81                      sum += x;
# Line 90 | Line 86 | public final class NoopLockLoops {
86                  barrier.await();
87                  result += sum;
88              }
89 <            catch (Exception ie) {
90 <                return;
89 >            catch (Exception ie) {
90 >                return;
91              }
92          }
93      }
94  
95   }
100 –

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