Hamlib/lib/usleep.c

68 wiersze
1.8 KiB
C

/* Copyright (C) 1992 Free Software Foundation, Inc.
This file is part of the GNU C Library.
This 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.
This 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 this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <config.h>
#ifndef HAVE_USLEEP
#include <sys/types.h>
#include <sys/time.h>
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif
#ifdef HAVE_WINBASE_H
# include <winbase.h>
#endif
#ifdef apollo
# include <apollo/base.h>
# include <apollo/time.h>
static time_$clock_t DomainTime100mS =
{
0, 100000 / 4
};
static status_$t DomainStatus;
#endif
/* Sleep USECONDS microseconds, or until a previously set timer goes off. */
int
usleep(unsigned long useconds)
{
#ifdef apollo
/* The usleep function does not work under the SYS5.3 environment.
Use the Domain/OS time_$wait call instead. */
time_$wait(time_$relative, DomainTime100mS, &DomainStatus);
#elif defined(HAVE_SSLEEP) /* Win32 */
Sleep(useconds / 1000);
#else
struct timeval delay;
delay.tv_sec = 0;
delay.tv_usec = useconds;
select(0, 0, 0, 0, &delay);
#endif
return 0;
}
#endif /* !HAVE_USLEEP */