rev 57095 : [mq]: use
rev 57096 : [mq]: trailing_semi

   1 /*
   2  * Copyright (c) 2015, 2019, 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 #ifndef SHARE_RUNTIME_SEMAPHORE_HPP
  26 #define SHARE_RUNTIME_SEMAPHORE_HPP
  27 
  28 #include "memory/allocation.hpp"
  29 #include "utilities/macros.hpp"
  30 
  31 #if defined(LINUX) || defined(SOLARIS) || defined(AIX)
  32 # include "semaphore_posix.hpp"
  33 #elif defined(BSD)
  34 # include "semaphore_bsd.hpp"
  35 #elif defined(_WINDOWS)
  36 # include "semaphore_windows.hpp"
  37 #else
  38 # error "No semaphore implementation provided for this OS"
  39 #endif
  40 
  41 class JavaThread;
  42 
  43 // Implements the limited, platform independent Semaphore API.
  44 class Semaphore : public CHeapObj<mtSynchronizer> {
  45   SemaphoreImpl _impl;
  46 
  47   NONCOPYABLE(Semaphore);


  48 
  49  public:
  50   Semaphore(uint value = 0) : _impl(value) {}
  51   ~Semaphore() {}
  52 
  53   void signal(uint count = 1) { _impl.signal(count); }
  54 
  55   void wait()                 { _impl.wait(); }
  56 
  57   bool trywait()              { return _impl.trywait(); }
  58 
  59   void wait_with_safepoint_check(JavaThread* thread);
  60 };
  61 
  62 #endif // SHARE_RUNTIME_SEMAPHORE_HPP
--- EOF ---