mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-26 12:41:05 +00:00
66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
/* Block a thread with a timeout. Mach version.
|
|
Copyright (C) 2000-2020 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
|
|
<https://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;
|
|
}
|