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/*
* libmowgli: A collection of useful routines for programming.
* posix_mutexops.c: POSIX Mutexes.
*
* 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"
#ifndef _WIN32
/*************
* This implements native Sun/UnixWare threads. Some other SVR4-based
* environments attempted to make work-alikes, but those aren't guaranteed
* to be supported. This should work on SunOS 5.2 and UnixWare 7, and
* anything later.
*************/
#if defined(__sun) || defined(__sco)
static int mowgli_sun_mutex_create(mowgli_mutex_t *mutex)
{
return mutex_init(&mutex->mutex, USYNC_THREAD, NULL);
}
static int mowgli_sun_mutex_lock(mowgli_mutex_t *mutex)
{
return mutex_lock(&mutex->mutex);
}
static int mowgli_sun_mutex_trylock(mowgli_mutex_t *mutex)
{
return mutex_trylock(&mutex->mutex);
}
static int mowgli_sun_mutex_unlock(mowgli_mutex_t *mutex)
{
return mutex_unlock(&mutex->mutex);
}
static int mowgli_sun_mutex_destroy(mowgli_mutex_t *mutex)
{
return mutex_destroy(&mutex->mutex);
}
const mowgli_mutex_ops_t _mowgli_sun_mutex_ops = {
.mutex_create = mowgli_sun_mutex_create,
.mutex_lock = mowgli_sun_mutex_lock,
.mutex_trylock = mowgli_sun_mutex_trylock,
.mutex_unlock = mowgli_sun_mutex_unlock,
.mutex_destroy = mowgli_sun_mutex_destroy,
};
/*************
* This "default" implementation uses pthreads. Care has been taken to
* ensure it runs on POSIX 1003.4a (draft 4, aka DECthreads, aka what OSF/1,
* Tru64, Ultrix, CMU Mach, and HP-UX use) as well as POSIX 1003.1c-1995.
* As long as you don't try playing with the pthread_attr module or the
* scheduler routines (which are non-standard and broken anyway, IMO) then
* it should be relatively easy to maintian d4 compatibility without
* sacrificing any functionality.
*************/
#elif !defined(MOWGLI_FEATURE_HAVE_NATIVE_MUTEXES)
static int mowgli_posix_mutex_create(mowgli_mutex_t *mutex)
{
return pthread_mutex_init(&mutex->mutex, NULL);
}
static int mowgli_posix_mutex_lock(mowgli_mutex_t *mutex)
{
return pthread_mutex_lock(&mutex->mutex);
}
static int mowgli_posix_mutex_trylock(mowgli_mutex_t *mutex)
{
return pthread_mutex_trylock(&mutex->mutex);
}
static int mowgli_posix_mutex_unlock(mowgli_mutex_t *mutex)
{
return pthread_mutex_unlock(&mutex->mutex);
}
static int mowgli_posix_mutex_destroy(mowgli_mutex_t *mutex)
{
return pthread_mutex_destroy(&mutex->mutex);
}
const mowgli_mutex_ops_t _mowgli_posix_mutex_ops = {
.mutex_create = mowgli_posix_mutex_create,
.mutex_lock = mowgli_posix_mutex_lock,
.mutex_trylock = mowgli_posix_mutex_trylock,
.mutex_unlock = mowgli_posix_mutex_unlock,
.mutex_destroy = mowgli_posix_mutex_destroy,
};
#endif
#endif
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