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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