a lot of minor cleanups

git-svn-id: file:///home/lennart/svn/public/libsydney/trunk@36 9ba3c220-e4d3-45a2-8aa3-73fcc9aff6ce

1 files changed, 107 insertions, 0 deletions

diff --git a/src/mutex-posix.c b/src/mutex-posix.c
new file mode 100644
index 0000000..436696c
--- /dev/null
+++ b/src/mutex-posix.c
@@ -0,0 +1,107 @@
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <pthread.h>
+#include <errno.h>
+
+#include "malloc.h"
+#include "macro.h"
+#include "mutex.h"
+
+struct sa_mutex {
+    pthread_mutex_t mutex;
+};
+
+struct sa_cond {
+    pthread_cond_t cond;
+};
+
+sa_mutex* sa_mutex_new(sa_bool_t recursive, sa_bool_t inherit_priority) {
+    sa_mutex *m;
+    pthread_mutexattr_t attr;
+    int r;
+
+    sa_assert_se(pthread_mutexattr_init(&attr) == 0);
+
+    if (recursive)
+        sa_assert_se(pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE) == 0);
+
+#ifdef HAVE_PTHREAD_PRIO_INHERIT
+    if (inherit_priority)
+        sa_assert_se(pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT) == 0);
+#endif
+
+    if (!(m = sa_new(sa_mutex, 1)))
+        return NULL;
+
+#ifndef HAVE_PTHREAD_PRIO_INHERIT
+    sa_assert_se(pthread_mutex_init(&m->mutex, &attr) == 0);
+
+#else
+    if ((r = pthread_mutex_init(&m->mutex, &attr))) {
+
+        /* If this failed, then this was probably due to non-available
+         * priority inheritance. In which case we fall back to normal
+         * mutexes. */
+        sa_assert(r == ENOTSUP && inherit_priority);
+
+        sa_assert_se(pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_NONE) == 0);
+        sa_assert_se(pthread_mutex_init(&m->mutex, &attr) == 0);
+    }
+#endif
+
+    return m;
+}
+
+void sa_mutex_free(sa_mutex *m) {
+    sa_assert(m);
+
+    sa_assert_se(pthread_mutex_destroy(&m->mutex) == 0);
+    sa_free(m);
+}
+
+void sa_mutex_lock(sa_mutex *m) {
+    sa_assert(m);
+
+    sa_assert_se(pthread_mutex_lock(&m->mutex) == 0);
+}
+
+void sa_mutex_unlock(sa_mutex *m) {
+    sa_assert(m);
+
+    sa_assert_se(pthread_mutex_unlock(&m->mutex) == 0);
+}
+
+sa_cond *sa_cond_new(void) {
+    sa_cond *c;
+
+    if (!(c = sa_new(sa_cond, 1)))
+        return NULL;
+
+    sa_assert_se(pthread_cond_init(&c->cond, NULL) == 0);
+    return c;
+}
+
+void sa_cond_free(sa_cond *c) {
+    sa_assert(c);
+
+    sa_assert_se(pthread_cond_destroy(&c->cond) == 0);
+    sa_free(c);
+}
+
+void sa_cond_signal(sa_cond *c, int broadcast) {
+    sa_assert(c);
+
+    if (broadcast)
+        sa_assert_se(pthread_cond_broadcast(&c->cond) == 0);
+    else
+        sa_assert_se(pthread_cond_signal(&c->cond) == 0);
+}
+
+int sa_cond_wait(sa_cond *c, sa_mutex *m) {
+    sa_assert(c);
+    sa_assert(m);
+
+    return pthread_cond_wait(&c->cond, &m->mutex);
+}