tests/org.simantics.db.tests/src/org/simantics/db/tests/api/request/misc/SyncRequestTest3.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.db.tests.api.request.misc;
  13
  14 import java.util.HashSet;
  15 import java.util.concurrent.Semaphore;
  16 import java.util.concurrent.TimeUnit;
  17
  18 import org.junit.Test;
  19 import org.simantics.db.ReadGraph;
  20 import org.simantics.db.Session;
  21 import org.simantics.db.exception.DatabaseException;
  22 import org.simantics.db.procedure.SyncListener;
  23 import org.simantics.db.request.Read;
  24 import org.simantics.db.testing.base.TestCommonPerf;
  25 import org.simantics.layer0.Layer0;
  26
  27 public class SyncRequestTest3 extends TestCommonPerf {
  28
  29     private static final int COUNT = 10000;
  30
  31     private static final int DEADLINE = 1000;
  32
  33         @Test
  34     public void test() throws Exception {
  35
  36         final Session session = getSession();
  37
  38         final HashSet<Integer> check = new HashSet<Integer>();
  39         for(int i=0;i<COUNT;i++) check.add(i);
  40
  41         final Semaphore s = new Semaphore(0);
  42
  43         long start = System.nanoTime();
  44
  45         for(int i=0;i<COUNT;i++) {
  46
  47             final int index = i;
  48
  49             session.asyncRequest(new Read<String>() {
  50
  51                 @Override
  52                 public String perform(ReadGraph graph) throws DatabaseException {
  53                     Layer0 l0 = Layer0.getInstance(graph);
  54                     return graph.getPossibleRelatedValue(rl, l0.HasName);
  55                 }
  56
  57             }, new SyncListener<String>() {
  58
  59                 @Override
  60                 public void exception(ReadGraph graph, Throwable throwable) throws DatabaseException {
  61                     throwable.printStackTrace();
  62                 }
  63
  64                 @Override
  65                 public void execute(ReadGraph graph, String result) throws DatabaseException {
  66                     synchronized(check) {
  67                         check.remove(index);
  68                         if(check.isEmpty()) s.release();
  69                     }
  70                 }
  71
  72                 @Override
  73                 public boolean isDisposed() {
  74                     return false;
  75                 }
  76
  77             });
  78
  79         }
  80
  81         boolean success = s.tryAcquire(DEADLINE, TimeUnit.MILLISECONDS);
  82
  83         long end = System.nanoTime();
  84
  85         String t = "SyncRequestTest3 finished in " + 1e-9*(double)(end-start) + " s."
  86         + " Limit was < " + (double)DEADLINE / 1000.0 + " s.";
  87         System.out.println(t);
  88
  89         if (!success)
  90                 fail(t);
  91     }
  92 }