test/native/runtime/test_semaphore.cpp

rev 13183 : imported patch trywait-test

*** 1,7 ****
  /*
!  * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 60,69 ****
--- 60,81 ----
    for (uint i = 0; i < total; i++) {
      sem.wait();
    }
  }
  
+ static void test_semaphore_trywait(uint value, uint max) {
+   Semaphore sem(value);
+ 
+   for (uint i = 0; i < max; ++i) {
+     if (i < value) {
+       ASSERT_EQ(sem.trywait(), true);
+     } else {
+       ASSERT_EQ(sem.trywait(), false);
+     }
+   }
+ }
+ 
  TEST(Semaphore, single_separate) {
    for (uint i = 1; i < 10; i++) {
      test_semaphore_single_separate(i);
    }
  }
*** 81,85 ****
--- 93,105 ----
          test_semaphore_many(value, max, inc);
        }
      }
    }
  }
+ 
+ TEST(Semaphore, trywait) {
+   for (uint max = 0; max < 10; max++) {
+     for (uint value = 0; value < max; value++) {
+       test_semaphore_trywait(value, max);
+     }
+   }
+ }