/*
 * Copyright (c) 2013-2015, dennis wang
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "scope_lock.h"

RecursiveLock::RecursiveLock() {
#if defined(_WIN32) || defined(WIN32) || defined(_WIN64)
  // recusive in nature
  InitializeCriticalSection(&_cs);
#else
  // recursive lock
  pthread_mutexattr_t attr;
  pthread_mutexattr_init(&attr);
  pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
  pthread_mutex_init(&_mutex, &attr);
#endif // _WIN32
}

RecursiveLock::~RecursiveLock() {
#if defined(_WIN32) || defined(WIN32) || defined(_WIN64)
  DeleteCriticalSection(&_cs);
#else
  pthread_mutex_destroy(&_mutex);
#endif // _WIN32
}

void RecursiveLock::lock() {
#if defined(_WIN32) || defined(WIN32) || defined(_WIN64)
  EnterCriticalSection(&_cs);
#else
  pthread_mutex_lock(&_mutex);
#endif // _WIN32
}

void RecursiveLock::unlock() {
#if defined(_WIN32) || defined(WIN32) || defined(_WIN64)
  LeaveCriticalSection(&_cs);
#else
  pthread_mutex_unlock(&_mutex);
#endif // _WIN32
}