1 /*
   2  * Copyright (c) 2014, Oracle and/or its affiliates.
   3  * All rights reserved. Use is subject to license terms.
   4  *
   5  * This file is available and licensed under the following license:
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  *  - Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  *  - Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the distribution.
  16  *  - Neither the name of Oracle Corporation nor the names of its
  17  *    contributors may be used to endorse or promote products derived
  18  *    from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32 
  33 
  34 #ifndef LOCK_H
  35 #define LOCK_H
  36 
  37 #include "Platform.h"
  38 
  39 #ifdef POSIX
  40 #include <pthread.h>
  41 #endif //POSIX
  42 
  43 
  44 class Lock {
  45 private:
  46 #ifdef WINDOWS
  47     CRITICAL_SECTION FCriticalSection;
  48 #endif //WINDOWS
  49 #ifdef POSIX
  50     pthread_mutex_t FMutex;
  51 #endif //POSIX
  52 
  53     void Initialize();
  54 
  55 public:
  56     Lock(void);
  57     Lock(bool Value);
  58     ~Lock(void);
  59 
  60     void Enter();
  61     void Leave();
  62     bool TryEnter();
  63 };
  64 
  65 #endif //LOCK_H