1 files changed, 70 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/mach/nanosleep.c b/REORG.TODO/sysdeps/mach/nanosleep.c
new file mode 100644
index 0000000000..a932e82cf1
--- /dev/null
+++ b/REORG.TODO/sysdeps/mach/nanosleep.c
@@ -0,0 +1,70 @@
+/* nanosleep -- sleep for a period specified with a struct timespec
+   Copyright (C) 2002-2017 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 <errno.h>
+#include <mach.h>
+#include <sys/time.h>
+#include <time.h>
+#include <unistd.h>
+
+int
+__libc_nanosleep (const struct timespec *requested_time,
+	     struct timespec *remaining)
+{
+  mach_port_t recv;
+  struct timeval before, after;
+
+  if (requested_time->tv_sec < 0
+      || requested_time->tv_nsec < 0
+      || requested_time->tv_nsec >= 1000000000)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  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;
+  error_t err = __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 (err == EMACH_RCV_INTERRUPTED)
+    {
+      if (remaining && __gettimeofday (&after, NULL) >= 0)
+	{
+	  struct timeval req_time, elapsed, rem;
+	  TIMESPEC_TO_TIMEVAL (&req_time, requested_time);
+	  timersub (&after, &before, &elapsed);
+	  timersub (&req_time, &elapsed, &rem);
+	  TIMEVAL_TO_TIMESPEC (&rem, remaining);
+	}
+
+      errno = EINTR;
+      return -1;
+    }
+
+  return 0;
+}
+weak_alias(__libc_nanosleep, __nanosleep)
+libc_hidden_def (__nanosleep)
+weak_alias (__libc_nanosleep, nanosleep)