summaryrefslogtreecommitdiffstats
path: root/src/mutex.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mutex.c')
-rw-r--r--src/mutex.c97
1 files changed, 97 insertions, 0 deletions
diff --git a/src/mutex.c b/src/mutex.c
new file mode 100644
index 0000000..12a4f4a
--- /dev/null
+++ b/src/mutex.c
@@ -0,0 +1,97 @@
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <pthread.h>
+#include <errno.h>
+
+#include "macro.h"
+#include "malloc.h"
+#include "mutex.h"
+
+struct sa_mutex {
+ pthread_mutex_t mutex;
+};
+
+struct sa_cond {
+ pthread_cond_t cond;
+};
+
+sa_mutex_t* sa_mutex_new(int recursive) {
+ sa_mutex_t *m;
+ pthread_mutexattr_t attr;
+
+ pthread_mutexattr_init(&attr);
+
+ if (recursive)
+ sa_assert_success(pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE));
+
+ if (!(m = sa_new(sa_mutex_t, 1)))
+ return NULL;
+
+ sa_assert_success(pthread_mutex_init(&m->mutex, &attr));
+ return m;
+}
+
+void sa_mutex_free(sa_mutex_t *m) {
+ sa_assert(m);
+
+ sa_assert_success(pthread_mutex_destroy(&m->mutex));
+ sa_free(m);
+}
+
+void sa_mutex_lock(sa_mutex_t *m) {
+ sa_assert(m);
+
+ sa_assert_success(pthread_mutex_lock(&m->mutex));
+}
+
+int sa_mutex_try_lock(sa_mutex_t *m) {
+ int e;
+ sa_assert(m);
+
+ if ((e = pthread_mutex_trylock(&m->mutex)) == 0)
+ return 1;
+
+ sa_assert(e == EBUSY);
+ return 0;
+}
+
+void sa_mutex_unlock(sa_mutex_t *m) {
+ sa_assert(m);
+
+ sa_assert_success(pthread_mutex_unlock(&m->mutex));
+}
+
+sa_cond_t *sa_cond_new(void) {
+ sa_cond_t *c;
+
+ if (!(c = sa_new(sa_cond_t, 1)))
+ return NULL;
+
+ sa_assert_success(pthread_cond_init(&c->cond, NULL));
+ return c;
+}
+
+void sa_cond_free(sa_cond_t *c) {
+ sa_assert(c);
+
+ sa_assert_success(pthread_cond_destroy(&c->cond));
+ sa_free(c);
+}
+
+void sa_cond_signal(sa_cond_t *c, int broadcast) {
+ sa_assert(c);
+
+ if (broadcast)
+ sa_assert_success(pthread_cond_broadcast(&c->cond));
+ else
+ sa_assert_success(pthread_cond_signal(&c->cond));
+}
+
+int sa_cond_wait(sa_cond_t *c, sa_mutex_t *m) {
+ sa_assert(c);
+ sa_assert(m);
+
+ return pthread_cond_wait(&c->cond, &m->mutex);
+}