1 files changed, 53 insertions, 0 deletions
diff --git a/sysdeps/mach/nanosleep.c b/sysdeps/mach/nanosleep.c
new file mode 100644
index 0000000000..8484a99001
--- /dev/null
+++ b/sysdeps/mach/nanosleep.c
@@ -0,0 +1,53 @@
+/* nanosleep -- sleep for a period specified with a struct timespec
+   Copyright (C) 2002 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <mach.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+int
+__nanosleep (const struct timespec *requested_time,
+	     struct timespec *remaining)
+{
+  mach_port_t recv;
+  struct timeval before, after;
+  const mach_msg_timeout_t ms
+    = requested_time->tv_sec * 1000
+    + (requested_time->tv_nsec + 999999) / 1000000;
+
+  recv = __mach_reply_port ();
+
+  if (remaining && __gettimeofday (&before, NULL) < 0)
+    return -1;
+  (void) __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT,
+		     0, 0, recv, ms, MACH_PORT_NULL);
+  __mach_port_destroy (mach_task_self (), recv);
+  if (remaining && __gettimeofday (&after, NULL) < 0)
+    return -1;
+
+  if (remaining)
+    {
+      timersub (&after, &before, &after);
+      TIMEVAL_TO_TIMESPEC (&after, remaining);
+    }
+
+  return 0;
+}
+weak_alias (__nanosleep, nanosleep)