1 files changed, 65 insertions, 0 deletions
diff --git a/sysdeps/mach/htl/pt-timedblock.c b/sysdeps/mach/htl/pt-timedblock.c
new file mode 100644
index 0000000000..9301b8fa18
--- /dev/null
+++ b/sysdeps/mach/htl/pt-timedblock.c
@@ -0,0 +1,65 @@
+/* Block a thread with a timeout.  Mach version.
+   Copyright (C) 2000-2018 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 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 <assert.h>
+#include <errno.h>
+#include <time.h>
+#include <sys/time.h>
+
+#include <mach.h>
+#include <mach/message.h>
+
+#include <pt-internal.h>
+
+/* Block THREAD.  */
+error_t
+__pthread_timedblock (struct __pthread *thread,
+		      const struct timespec *abstime, clockid_t clock_id)
+{
+  error_t err;
+  mach_msg_header_t msg;
+  mach_msg_timeout_t timeout;
+  struct timespec now;
+
+  /* We have an absolute time and now we have to convert it to a
+     relative time.  Arg.  */
+
+  err = clock_gettime (clock_id, &now);
+  assert (!err);
+
+  if (now.tv_sec > abstime->tv_sec
+      || (now.tv_sec == abstime->tv_sec && now.tv_nsec > abstime->tv_nsec))
+    return ETIMEDOUT;
+
+  timeout = (abstime->tv_sec - now.tv_sec) * 1000;
+
+  if (abstime->tv_nsec >= now.tv_nsec)
+    timeout += (abstime->tv_nsec - now.tv_nsec + 999999) / 1000000;
+  else
+    /* Need to do a carry.  */
+    timeout -= (now.tv_nsec - abstime->tv_nsec + 999999) / 1000000;
+
+  err = __mach_msg (&msg, MACH_RCV_MSG | MACH_RCV_TIMEOUT, 0,
+		    sizeof msg, thread->wakeupmsg.msgh_remote_port,
+		    timeout, MACH_PORT_NULL);
+  if (err == EMACH_RCV_TIMED_OUT)
+    return ETIMEDOUT;
+
+  assert_perror (err);
+  return 0;
+}