mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-02 09:33:31 +03:00
42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/* Copyright (C) 1992-2017 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 <unistd.h>
|
|
|
|
/* Sleep USECONDS microseconds, or until a previously set timer goes off. */
|
|
int
|
|
usleep (useconds_t useconds)
|
|
{
|
|
mach_port_t recv;
|
|
struct timeval before, after;
|
|
|
|
recv = __mach_reply_port ();
|
|
|
|
if (__gettimeofday (&before, NULL) < 0)
|
|
return -1;
|
|
(void) __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT,
|
|
0, 0, recv, (useconds + 999) / 1000, MACH_PORT_NULL);
|
|
__mach_port_destroy (mach_task_self (), recv);
|
|
if (__gettimeofday (&after, NULL) < 0)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|