1 files changed, 51 insertions, 0 deletions
diff --git a/sysdeps/htl/pt-condattr-setclock.c b/sysdeps/htl/pt-condattr-setclock.c
new file mode 100644
index 0000000000..fa3e14a0d3
--- /dev/null
+++ b/sysdeps/htl/pt-condattr-setclock.c
@@ -0,0 +1,51 @@
+/* pthread_condattr_setclock.  Generic version.
+   Copyright (C) 2002-2018 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_condattr_setclock (pthread_condattr_t *attr, clockid_t clock)
+{
+  /* Only a few clocks are allowed.  CLOCK_REALTIME is always allowed.
+     CLOCK_MONOTONIC only if the kernel has the necessary support.  */
+  if (clock == CLOCK_MONOTONIC)
+    {
+      /* Check whether the clock is available.  */
+      static int avail;
+
+      if (avail == 0)
+	{
+	  struct timespec ts;
+	  int res;
+
+	  res = clock_gettime (CLOCK_MONOTONIC, &ts);
+	  avail = res < 0 ? -1 : 1;
+	}
+
+      if (avail < 0)
+	/* Not available.  */
+	return EINVAL;
+    }
+  else if (clock != CLOCK_REALTIME)
+    return EINVAL;
+
+  attr->__clock = clock;
+
+  return 0;
+}