1 /* nanosleep -- sleep for a period specified with a struct timespec
2 Copyright (C) 2002 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
25 __nanosleep (const struct timespec
*requested_time
,
26 struct timespec
*remaining
)
29 struct timeval before
, after
;
30 const mach_msg_timeout_t ms
31 = requested_time
->tv_sec
* 1000
32 + (requested_time
->tv_nsec
+ 999999) / 1000000;
34 recv
= __mach_reply_port ();
36 if (remaining
&& __gettimeofday (&before
, NULL
) < 0)
38 (void) __mach_msg (NULL
, MACH_RCV_MSG
|MACH_RCV_TIMEOUT
|MACH_RCV_INTERRUPT
,
39 0, 0, recv
, ms
, MACH_PORT_NULL
);
40 __mach_port_destroy (mach_task_self (), recv
);
41 if (remaining
&& __gettimeofday (&after
, NULL
) < 0)
46 timersub (&after
, &before
, &after
);
47 TIMEVAL_TO_TIMESPEC (&after
, remaining
);
52 libc_hidden_def (__nanosleep
)
53 weak_alias (__nanosleep
, nanosleep
)