1 /*
   2  * Copyright (c) 2014, 2018, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #ifndef LOCK_H
  27 #define LOCK_H
  28 
  29 #include "Platform.h"
  30 
  31 #ifdef POSIX
  32 #include <pthread.h>
  33 #endif //POSIX
  34 
  35 
  36 class Lock {
  37 private:
  38 #ifdef WINDOWS
  39     CRITICAL_SECTION FCriticalSection;
  40 #endif //WINDOWS
  41 #ifdef POSIX
  42     pthread_mutex_t FMutex;
  43 #endif //POSIX
  44 
  45     void Initialize();
  46 
  47 public:
  48     Lock(void);
  49     Lock(bool Value);
  50     ~Lock(void);
  51 
  52     void Enter();
  53     void Leave();
  54     bool TryEnter();
  55 };
  56 
  57 #endif // LOCK_H