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authorJoel Sherrill <joel.sherrill@OARcorp.com>1999-11-02 18:00:15 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>1999-11-02 18:00:15 +0000
commit799c767d319d65c94b3770e82490c8dd4dc80378 (patch)
treebf9909c7f3ae617a34e401a0f88dc314f982f772 /c/src/exec/posix/src/sempost.c
parentSplit some more stuff out of psignal.c. (diff)
downloadrtems-799c767d319d65c94b3770e82490c8dd4dc80378.tar.bz2
Split the POSIX semaphore manager into multiple files.
Diffstat (limited to 'c/src/exec/posix/src/sempost.c')
-rw-r--r--c/src/exec/posix/src/sempost.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/c/src/exec/posix/src/sempost.c b/c/src/exec/posix/src/sempost.c
new file mode 100644
index 0000000000..d3375ce80d
--- /dev/null
+++ b/c/src/exec/posix/src/sempost.c
@@ -0,0 +1,53 @@
+/*
+ * $Id$
+ */
+
+#include <stdarg.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <semaphore.h>
+#include <limits.h>
+
+#include <rtems/system.h>
+#include <rtems/score/object.h>
+#include <rtems/posix/semaphore.h>
+#include <rtems/posix/time.h>
+#include <rtems/posix/seterr.h>
+
+/*PAGE
+ *
+ * 11.2.7 Unlock a Semaphore, P1003.1b-1993, p.227
+ */
+
+int sem_post(
+ sem_t *sem
+)
+{
+ register POSIX_Semaphore_Control *the_semaphore;
+ Objects_Locations location;
+
+ the_semaphore = _POSIX_Semaphore_Get( sem, &location );
+ switch ( location ) {
+ case OBJECTS_ERROR:
+ set_errno_and_return_minus_one( EINVAL );
+ case OBJECTS_REMOTE:
+ _Thread_Dispatch();
+ return POSIX_MP_NOT_IMPLEMENTED();
+ set_errno_and_return_minus_one( EINVAL );
+ case OBJECTS_LOCAL:
+ _CORE_semaphore_Surrender(
+ &the_semaphore->Semaphore,
+ the_semaphore->Object.id,
+#if defined(RTEMS_MULTIPROCESSING)
+ POSIX_Semaphore_MP_support
+#else
+ NULL
+#endif
+ );
+ _Thread_Enable_dispatch();
+ return 0;
+ }
+ return POSIX_BOTTOM_REACHED();
+}