glibc/sysdeps/mach/usleep.c
Ulrich Drepper 5a05b36764 Update.
* sysdeps/unix/sysv/linux/alpha/bits/types.h: Make __useconds_t
	unsigned.
	* sysdeps/unix/sysv/linux/bits/types.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/types.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/types.h: Likewise.
	* sysdeps/unix/sysv/sysv4/solaris2/bits/types.h: Likewise.

	* sysdeps/generic/bits/types.h: Make __useconds_t unsigned.

	* sysdeps/generic/ualarm.c (ualarm): Change return value and
	parameter type to useconds_t.
	* sysdeps/unix/bsd/ualarm.c: Likewise.

	* sysdeps/generic/usleep.c (usleep): Change parameter type to
	useconds_t.
	* sysdeps/unix/sysv/linux/usleep.c: Likewise.
	* sysdeps/mach/usleep.c: Likewise.
1999-08-18 03:42:39 +00:00

41 lines
1.4 KiB
C

/* Copyright (C) 1992, 93, 94, 97, 98, 99 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <mach.h>
#include <sys/time.h>
#include <unistd.h>
/* Sleep USECONDS microseconds, or until a previously set timer goes off. */
void
usleep (useconds_t useconds)
{
mach_port_t recv;
struct timeval before, after;
recv = __mach_reply_port ();
if (__gettimeofday (&before, NULL) < 0)
return;
(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;
}