third-party/triemap/src/test/java/org/opendaylight/yangtools/triemap/TestMultiThreadAddDelete.java

   1 /*
   2  * (C) Copyright 2016 Pantheon Technologies, s.r.o. and others.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.opendaylight.yangtools.triemap;
  17
  18 import static org.junit.Assert.assertEquals;
  19 import static org.junit.Assert.assertFalse;
  20 import static org.junit.Assert.assertTrue;
  21
  22 import java.util.Map;
  23 import java.util.concurrent.ExecutorService;
  24 import java.util.concurrent.Executors;
  25 import java.util.concurrent.TimeUnit;
  26 import org.junit.Test;
  27
  28 public class TestMultiThreadAddDelete {
  29     private static final int RETRIES = 1;
  30     private static final int N_THREADS = 7;
  31     private static final int COUNT = 50 * 1000;
  32
  33     @Test
  34     public void testMultiThreadAddDelete () throws InterruptedException {
  35         for (int j = 0; j < RETRIES; j++) {
  36             final Map<Object, Object> bt = TrieMap.create();
  37
  38             {
  39                 final ExecutorService es = Executors.newFixedThreadPool(N_THREADS);
  40                 for (int i = 0; i < N_THREADS; i++) {
  41                     final int threadNo = i;
  42                     es.execute(() -> {
  43                         for (int k = 0; k < COUNT; k++) {
  44                             if (k % N_THREADS == threadNo) {
  45                                 bt.put(Integer.valueOf(k), Integer.valueOf(k));
  46                             }
  47                         }
  48                     });
  49                 }
  50                 es.shutdown ();
  51                 es.awaitTermination(5, TimeUnit.MINUTES);
  52             }
  53
  54             assertEquals(COUNT, bt.size());
  55             assertFalse(bt.isEmpty());
  56
  57             {
  58                 final ExecutorService es = Executors.newFixedThreadPool(N_THREADS);
  59                 for (int i = 0; i < N_THREADS; i++) {
  60                     final int threadNo = i;
  61                     es.execute (() -> {
  62                         for (int k = 0; k < COUNT; k++) {
  63                             if (k % N_THREADS == threadNo) {
  64                                 bt.remove (Integer.valueOf (k));
  65                             }
  66                         }
  67                     });
  68                 }
  69                 es.shutdown ();
  70                 es.awaitTermination(5, TimeUnit.MINUTES);
  71             }
  72
  73
  74             assertEquals(0, bt.size ());
  75             assertTrue(bt.isEmpty());
  76
  77             {
  78                 final ExecutorService es = Executors.newFixedThreadPool (N_THREADS);
  79                 for (int i = 0; i < N_THREADS; i++) {
  80                     final int threadNo = i;
  81                     es.execute (new Runnable () {
  82                         @Override
  83                         public void run () {
  84                             for (int j = 0; j < COUNT; j++) {
  85                                 if (j % N_THREADS == threadNo) {
  86                                     try {
  87                                         bt.put (Integer.valueOf (j), Integer.valueOf (j));
  88                                         if (!bt.containsKey (Integer.valueOf (j))) {
  89                                             System.out.println (j);
  90                                         }
  91                                         bt.remove (Integer.valueOf (j));
  92                                         if (bt.containsKey (Integer.valueOf (j))) {
  93                                             System.out.println (-j);
  94                                         }
  95                                     } catch (Throwable t) {
  96                                         t.printStackTrace ();
  97                                     }
  98                                 }
  99                             }
 100                         }
 101                     });
 102                 }
 103                 es.shutdown ();
 104                 es.awaitTermination(5, TimeUnit.MINUTES);
 105             }
 106
 107             assertEquals(0, bt.size());
 108             assertTrue(bt.isEmpty());
 109         }
 110     }
 111 }