rev 12338 : 8166156: Convert test_semaphore to GTest
Reviewed-by: duke

   1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "utilities/debug.hpp"
  27 #include "runtime/semaphore.hpp"
  28 
  29 /////////////// Unit tests ///////////////
  30 
  31 #ifndef PRODUCT
  32 
  33 static void test_semaphore_single_separate(uint count) {
  34   Semaphore sem(0);
  35 
  36   for (uint i = 0; i < count; i++) {
  37     sem.signal();
  38   }
  39 
  40   for (uint i = 0; i < count; i++) {
  41     sem.wait();
  42   }
  43 }
  44 
  45 static void test_semaphore_single_combined(uint count) {
  46   Semaphore sem(0);
  47 
  48   for (uint i = 0; i < count; i++) {
  49     sem.signal();
  50     sem.wait();
  51   }
  52 }
  53 
  54 static void test_semaphore_many(uint value, uint max, uint increments) {
  55   Semaphore sem(value);
  56 
  57   uint total = value;
  58 
  59   for (uint i = value; i + increments <= max; i += increments) {
  60     sem.signal(increments);
  61 
  62     total += increments;
  63   }
  64 
  65   for (uint i = 0; i < total; i++) {
  66     sem.wait();
  67   }
  68 }
  69 
  70 static void test_semaphore_many() {
  71   for (uint max = 0; max < 10; max++) {
  72     for (uint value = 0; value < max; value++) {
  73       for (uint inc = 1; inc <= max - value; inc++) {
  74         test_semaphore_many(value, max, inc);
  75       }
  76     }
  77   }
  78 }
  79 
  80 void test_semaphore() {
  81   for (uint i = 1; i < 10; i++) {
  82     test_semaphore_single_separate(i);
  83   }

  84 
  85   for (uint i = 0; i < 10; i++) {

  86     test_semaphore_single_combined(i);
  87   }
  88 
  89   test_semaphore_many();
  90 }
  91 
  92 #endif // PRODUCT
  93 







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