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Comparing jsr166/src/test/loops/OfferPollLoops.java (file contents):
Revision 1.1 by dl, Fri Oct 23 19:57:06 2009 UTC vs.
Revision 1.9 by jsr166, Mon Aug 10 03:13:33 2015 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.*;
# Line 34 | Line 34 | public class OfferPollLoops {
34      static final int POOL_MASK = POOL_SIZE-1;
35      static final Integer[] intPool = new Integer[POOL_SIZE];
36      static {
37 <        for (int i = 0; i < POOL_SIZE; ++i)
37 >        for (int i = 0; i < POOL_SIZE; ++i)
38              intPool[i] = Integer.valueOf(i);
39      }
40  
41      // Number of puts by producers or takes by consumers
42      static final int ITERS = 1 << 20;
43  
44 <    // max lag between a producer and consumer to avoid
44 >    // max lag between a producer and consumer to avoid
45      // this becoming a GC test rather than queue test.
46      // Used only per-pair to lessen impact on queue sync
47      static final int LAG_MASK = (1 << 12) - 1;
# Line 49 | Line 49 | public class OfferPollLoops {
49      public static void main(String[] args) throws Exception {
50          int maxN = NCPUS * 3 / 2;
51  
52 <        if (args.length > 0)
52 >        if (args.length > 0)
53              maxN = Integer.parseInt(args[0]);
54  
55          warmup();
56          print = true;
57 <        int k = 1;
58 <        for (int i = 1; i <= maxN;) {
57 >        for (int k = 1, i = 1; i <= maxN;) {
58              System.out.println("Pairs:" + i);
59              oneTest(i, ITERS);
60              if (i == k) {
61                  k = i << 1;
62                  i = i + (i >>> 1);
63 <            }
64 <            else
63 >            }
64 >            else
65                  i = k;
66          }
67          pool.shutdown();
# Line 73 | Line 72 | public class OfferPollLoops {
72          System.out.print("Warmup ");
73          int it = 2000;
74          for (int j = 5; j > 0; --j) {
75 <            oneTest(j, it);
75 >            oneTest(j, it);
76              System.out.print(".");
77              it += 1000;
78          }
79          System.gc();
80          it = 20000;
81          for (int j = 5; j > 0; --j) {
82 <            oneTest(j, it);
82 >            oneTest(j, it);
83              System.out.print(".");
84              it += 10000;
85          }
# Line 103 | Line 102 | public class OfferPollLoops {
102  
103          Thread.sleep(100); // System.gc();
104          if (print)
105 +            System.out.print("ConcurrentLinkedDeque   ");
106 +        oneRun(new ConcurrentLinkedDeque<Integer>(), n, iters);
107 +
108 +        Thread.sleep(100); // System.gc();
109 +        if (print)
110              System.out.print("LinkedBlockingQueue     ");
111          oneRun(new LinkedBlockingQueue<Integer>(), n, iters);
112  
# Line 115 | Line 119 | public class OfferPollLoops {
119          if (print)
120              System.out.print("LinkedBlockingDeque     ");
121          oneRun(new LinkedBlockingDeque<Integer>(), n, iters);
122 <        
122 >
123          Thread.sleep(100); // System.gc();
124          if (print)
125              System.out.print("ArrayBlockingQueue      ");
126          oneRun(new ArrayBlockingQueue<Integer>(POOL_SIZE), n, iters);
127  
124 –
128          Thread.sleep(100); // System.gc();
129          if (print)
130              System.out.print("PriorityBlockingQueue   ");
# Line 131 | Line 134 | public class OfferPollLoops {
134          if (print)
135              System.out.print("ArrayBlockingQueue(fair)");
136          oneRun(new ArrayBlockingQueue<Integer>(POOL_SIZE, true), n, fairIters);
134 –
137      }
138 <    
139 <    static abstract class Stage implements Runnable {
138 >
139 >    abstract static class Stage implements Runnable {
140          final int iters;
141          final Queue<Integer> queue;
142          final CyclicBarrier barrier;
143          final Phaser lagPhaser;
144 <        Stage (Queue<Integer> q, CyclicBarrier b, Phaser s,
145 <               int iters) {
144 <            queue = q;
144 >        Stage(Queue<Integer> q, CyclicBarrier b, Phaser s, int iters) {
145 >            queue = q;
146              barrier = b;
147              lagPhaser = s;
148              this.iters = iters;
# Line 171 | Line 172 | public class OfferPollLoops {
172                              break;
173                          if ((i & LAG_MASK) == LAG_MASK)
174                              lagPhaser.arriveAndAwaitAdvance();
175 <                    }                        
175 >                    }
176                  }
177                  addProducerSum(ps);
178                  barrier.await();
179              }
180 <            catch (Exception ie) {
181 <                ie.printStackTrace();
182 <                return;
180 >            catch (Exception ie) {
181 >                ie.printStackTrace();
182 >                return;
183              }
184          }
185      }
186  
187      static class Consumer extends Stage {
188          Consumer(Queue<Integer> q, CyclicBarrier b, Phaser s,
189 <                 int iters) {
189 >                 int iters) {
190              super(q, b, s, iters);
191          }
192  
# Line 209 | Line 210 | public class OfferPollLoops {
210                  addConsumerSum(cs);
211                  barrier.await();
212              }
213 <            catch (Exception ie) {
214 <                ie.printStackTrace();
215 <                return;
213 >            catch (Exception ie) {
214 >                ie.printStackTrace();
215 >                return;
216              }
217          }
218  
# Line 233 | Line 234 | public class OfferPollLoops {
234              System.out.println("\t: " + LoopHelpers.rightJustify(time / (iters * n)) + " ns per transfer");
235      }
236  
236 –
237   }
238 –

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