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Diffstat (limited to 'src/libmowgli/thread/posix_mutexops.c')
-rw-r--r-- | src/libmowgli/thread/posix_mutexops.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/src/libmowgli/thread/posix_mutexops.c b/src/libmowgli/thread/posix_mutexops.c new file mode 100644 index 0000000..5fb64e9 --- /dev/null +++ b/src/libmowgli/thread/posix_mutexops.c @@ -0,0 +1,115 @@ +/* + * 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 |