1 files changed, 45 insertions, 0 deletions
diff --git a/nptl/sem_clockwait.c b/nptl/sem_clockwait.c
new file mode 100644
index 0000000000..23a6c08677
--- /dev/null
+++ b/nptl/sem_clockwait.c
@@ -0,0 +1,45 @@
+/* sem_clockwait -- wait on a semaphore with timeout using the specified
+   clock.
+
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "sem_waitcommon.c"
+
+int
+sem_clockwait (sem_t *sem, clockid_t clockid,
+	       const struct timespec *abstime)
+{
+  /* Check that supplied clockid is one we support, even if we don't end up
+     waiting.  */
+  if (!futex_abstimed_supported_clockid (clockid))
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (__new_sem_wait_fast ((struct new_sem *) sem, 0) == 0)
+    return 0;
+  else
+    return __new_sem_wait_slow ((struct new_sem *) sem, clockid, abstime);
+}