added santiy checks to mutexes

[physics.git] / src / locks / Mutex.cpp

/*
 *  Copyright (C) 2008 Patrik Gornicz, Gornicz_P (at) hotmail (dot) com.
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "Mutex.h"
#include "debug.h"

#include <SDL/SDL.h>

Mutex::Mutex()
    : m_pSDL_mutex(NULL)
{

}
Mutex::~Mutex()
{

}

void Mutex::init()
{
    m_pSDL_mutex = SDL_CreateMutex();
}
void Mutex::clean()
{
    SDL_DestroyMutex(m_pSDL_mutex);
    m_pSDL_mutex = NULL;
}

bool Mutex::IsValid()
{
    return NULL != m_pSDL_mutex;
}

void Mutex::Lock()
{
    DASSERT(IsValid());

    SDL_mutexP(m_pSDL_mutex);
    m_uiThreadID = SDL_ThreadID();
}
void Mutex::Unlock()
{
    DASSERT(IsValid());

    DASSERT(m_uiThreadID == SDL_ThreadID());
    SDL_mutexV(m_pSDL_mutex);
}