qse/lib/si/os.c

102 lines
2.7 KiB
C

/*
* $Id$
*
Copyright (c) 2006-2019 Chung, Hyung-Hwan. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <qse/si/os.h>
#if defined(HAVE_TIME_H)
# include <time.h>
#endif
#if defined(HAVE_SYS_TIME_H)
# include <sys/time.h>
#endif
#if defined(HAVE_SCHED_H)
# include <sched.h>
#endif
void qse_sleep (const qse_ntime_t* interval)
{
#if defined(_WIN32)
DWORD milli = QSE_SECNSEC_TO_MSEC(interval->sec, interval->nsec);
Sleep (milli);
#elif defined(__OS2__)
ULONG milli = QSE_SECNSEC_TO_MSEC(interval->sec, interval->nsec);
DosSleep (milli);
#elif defined(HAVE_NANOSLEEP)
struct timespec ts;
ts.tv_sec = interval->sec;
ts.tv_nsec = interval->nsec;
nanosleep (&ts, &ts);
#else
sleep (interval->sec);
#endif
}
void qse_msleep (qse_mtime_t interval)
{
#if defined(_WIN32)
Sleep (interval);
#elif defined(__OS2__)
DosSleep (interval);
#elif defined(HAVE_NANOSLEEP)
struct timespec ts;
ts.tv_sec = QSE_MSEC_TO_SEC(interval);
interval -= QSE_SEC_TO_MSEC(ts.tv_sec);
ts.tv_nsec = QSE_MSEC_TO_NSEC(interval);
nanosleep (&ts, &ts);
#else
sleep (QSE_MSEC_TO_SEC(interval));
#endif
}
/*
TODO:
int qse_set_proc_name (const qse_char_t* name)
{
::prctl(PR_SET_NAME, name, 0, 0, 0);
}*/
void qse_sched_yield (void)
{
#if defined(_WIN32)
SwitchToThread ();
/* or Sleep (0) */
#elif defined(__OS2__)
DosSleep (0);
#elif defined(HAVE_SCHED_YIELD)
sched_yield();
#elif defined(HAVE_NANOSLEEP)
struct timespec ts;
ts.tv_sec = 0;
ts.tv_nsec = 0;
nanosleep (&ts, &ts);
#else
sleep (0);
#endif
}