Move usleep.c using nanosleep to sysdeps/posix.

1 files changed, 33 insertions, 0 deletions

diff --git a/sysdeps/posix/usleep.c b/sysdeps/posix/usleep.c
new file mode 100644
index 0000000000..841f1fa1b1
--- /dev/null
+++ b/sysdeps/posix/usleep.c
@@ -0,0 +1,33 @@
+/* Implementation of the BSD usleep function using nanosleep.
+   Copyright (C) 1996-2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   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 <time.h>
+#include <unistd.h>
+
+int
+usleep (useconds_t useconds)
+{
+  struct timespec ts = { .tv_sec = (long int) (useconds / 1000000),
+			 .tv_nsec = (long int) (useconds % 1000000) * 1000ul };
+
+  /* Note the usleep() is a cancellation point.  But since we call
+     nanosleep() which itself is a cancellation point we do not have
+     to do anything here.  */
+  return __nanosleep (&ts, NULL);
+}