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/*
* libmowgli: A collection of useful routines for programming.
* win32_mutexops.c: Windows mutex operations
*
* Copyright (c) 2011 Wilcox Technologies, LLC <awilcox -at- wilcox-tech.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice is present in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 "mowgli.h"
/*************
* This Windows implementation is guaranteed to work on Windows 95,
* Windows NT 4, and anything later.
*************/
#if defined(_WIN32)
static int mowgli_win32_mutex_create(mowgli_mutex_t *mutex)
{
mutex->mutex = CreateMutex(NULL, FALSE, NULL);
if(mutex->mutex == NULL)
return GetLastError();
return 0;
}
static int mowgli_win32_mutex_lock(mowgli_mutex_t *mutex)
{
return WaitForSingleObject(mutex->mutex, INFINITE);
}
static int mowgli_win32_mutex_trylock(mowgli_mutex_t *mutex)
{
return WaitForSingleObject(mutex->mutex, 0);
}
static int mowgli_win32_mutex_unlock(mowgli_mutex_t *mutex)
{
if(ReleaseMutex(mutex->mutex) != 0)
return 0;
return GetLastError();
}
static int mowgli_win32_mutex_destroy(mowgli_mutex_t *mutex)
{
CloseHandle(mutex->mutex);
return 0;
}
const mowgli_mutex_ops_t _mowgli_win32_mutex_ops = {
.mutex_create = mowgli_win32_mutex_create,
.mutex_lock = mowgli_win32_mutex_lock,
.mutex_trylock = mowgli_win32_mutex_trylock,
.mutex_unlock = mowgli_win32_mutex_unlock,
.mutex_destroy = mowgli_win32_mutex_destroy
};
#endif
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