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authorJens Gustedt <Jens.Gustedt@inria.fr>2014-09-06 22:27:45 -0400
committerRich Felker <dalias@aerifal.cx>2014-09-06 22:27:45 -0400
commit14397cec2c8429b504b17aaf92509b48da3681b9 (patch)
tree481ed8c5e1d748e88d263b0b20c1d2ccc934051e /src
parent8b0472932c1cb8cb2cc46322b21c0c4e21848522 (diff)
downloadmusl-14397cec2c8429b504b17aaf92509b48da3681b9.tar.gz
add C11 condition variable functions
Because of the clear separation for private pthread_cond_t these interfaces are quite simple and direct.
Diffstat (limited to 'src')
-rw-r--r--src/thread/cnd_broadcast.c10
-rw-r--r--src/thread/cnd_destroy.c6
-rw-r--r--src/thread/cnd_init.c7
-rw-r--r--src/thread/cnd_signal.c10
-rw-r--r--src/thread/cnd_timedwait.c15
-rw-r--r--src/thread/cnd_wait.c9
6 files changed, 57 insertions, 0 deletions
diff --git a/src/thread/cnd_broadcast.c b/src/thread/cnd_broadcast.c
new file mode 100644
index 00000000..85d4d3ea
--- /dev/null
+++ b/src/thread/cnd_broadcast.c
@@ -0,0 +1,10 @@
+#include <threads.h>
+
+int __private_cond_signal(cnd_t *, int);
+
+int cnd_broadcast(cnd_t *c)
+{
+ /* This internal function never fails, and always returns zero,
+ * which matches the value thrd_success is defined with. */
+ return __private_cond_signal(c, -1);
+}
diff --git a/src/thread/cnd_destroy.c b/src/thread/cnd_destroy.c
new file mode 100644
index 00000000..453c90be
--- /dev/null
+++ b/src/thread/cnd_destroy.c
@@ -0,0 +1,6 @@
+#include <threads.h>
+
+void cnd_destroy(cnd_t *c)
+{
+ /* For private cv this is a no-op */
+}
diff --git a/src/thread/cnd_init.c b/src/thread/cnd_init.c
new file mode 100644
index 00000000..18c50855
--- /dev/null
+++ b/src/thread/cnd_init.c
@@ -0,0 +1,7 @@
+#include <threads.h>
+
+int cnd_init(cnd_t *c)
+{
+ *c = (cnd_t){ 0 };
+ return thrd_success;
+}
diff --git a/src/thread/cnd_signal.c b/src/thread/cnd_signal.c
new file mode 100644
index 00000000..1211260b
--- /dev/null
+++ b/src/thread/cnd_signal.c
@@ -0,0 +1,10 @@
+#include <threads.h>
+
+int __private_cond_signal(cnd_t *, int);
+
+int cnd_signal(cnd_t *c)
+{
+ /* This internal function never fails, and always returns zero,
+ * which matches the value thrd_success is defined with. */
+ return __private_cond_signal(c, 1);
+}
diff --git a/src/thread/cnd_timedwait.c b/src/thread/cnd_timedwait.c
new file mode 100644
index 00000000..59976793
--- /dev/null
+++ b/src/thread/cnd_timedwait.c
@@ -0,0 +1,15 @@
+#include <threads.h>
+#include <errno.h>
+
+int __pthread_cond_timedwait(cnd_t *restrict, mtx_t *restrict, const struct timespec *restrict);
+
+int cnd_timedwait(cnd_t *restrict c, mtx_t *restrict m, const struct timespec *restrict ts)
+{
+ int ret = __pthread_cond_timedwait(c, m, ts);
+ switch (ret) {
+ /* May also return EINVAL or EPERM. */
+ default: return thrd_error;
+ case 0: return thrd_success;
+ case ETIMEDOUT: return thrd_timedout;
+ }
+}
diff --git a/src/thread/cnd_wait.c b/src/thread/cnd_wait.c
new file mode 100644
index 00000000..602796f8
--- /dev/null
+++ b/src/thread/cnd_wait.c
@@ -0,0 +1,9 @@
+#include <threads.h>
+
+int cnd_wait(cnd_t *c, mtx_t *m)
+{
+ /* Calling cnd_timedwait with a null pointer is an extension.
+ * It is convenient here to avoid duplication of the logic
+ * for return values. */
+ return cnd_timedwait(c, m, 0);
+}