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/* Copyright (C) Yuri Dario & 2000 MySQL AB
All the above parties has a full, independent copyright to
the following code, including the right to use the code in
any manner without any demands from the other parties.
This 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.
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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA */
/*****************************************************************************
** The following is a simple implementation of posix conditions
*****************************************************************************/
#undef SAFE_MUTEX /* Avoid safe_mutex redefinitions */
#include "mysys_priv.h"
#if defined(THREAD) && defined(OS2)
#include <m_string.h>
#include <process.h>
#include <sys/timeb.h>
int pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr)
{
cond->waiting= 0;
/* Warp3 FP29 or Warp4 FP4 or better required */
if (DosCreateEventSem(NULL, &cond->semaphore, 0x0800, 0))
return ENOMEM;
return 0;
}
int pthread_cond_destroy(pthread_cond_t *cond)
{
for (;;)
{
APIRET rc;
if ((rc= DosCloseEventSem(cond->semaphore)) != 301)
return rc ? EINVAL : 0;
DosPostEventSem(cond->semaphore);
}
}
int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
{
int rval= 0;
cond->waiting++;
if (mutex)
pthread_mutex_unlock(mutex);
if (DosWaitEventSem(cond->semaphore, SEM_INDEFINITE_WAIT))
rval= EINVAL;
if (mutex)
pthread_mutex_lock(mutex);
cond->waiting--;
return rval;
}
int pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex,
struct timespec *abstime)
{
struct timeb curtime;
int result;
long timeout;
int rval= 0;
_ftime(&curtime);
timeout= ((long) (abstime->ts_sec - curtime.time) * 1000L +
(long) ((abstime->ts_nsec / 1000) - curtime.millitm) / 1000L);
if (timeout < 0) /* Some safety */
timeout= 0L;
cond->waiting++;
if (mutex)
pthread_mutex_unlock(mutex);
if (DosWaitEventSem(cond->semaphore, timeout) != 0)
rval= ETIMEDOUT;
if (mutex)
pthread_mutex_lock(mutex);
cond->waiting--;
return rval;
}
int pthread_cond_signal(pthread_cond_t *cond)
{
/* Bring the next thread off the condition queue: */
DosPostEventSem(cond->semaphore);
return 0;
}
int pthread_cond_broadcast(pthread_cond_t *cond)
{
int i;
/* Enter a loop to bring all threads off the condition queue */
for (i= cond->waiting; i--;)
DosPostEventSem(cond->semaphore);
return 0;
}
int pthread_attr_init(pthread_attr_t *connect_att)
{
connect_att->dwStackSize= 0;
connect_att->dwCreatingFlag= 0;
connect_att->priority= 0;
return 0;
}
int pthread_attr_setstacksize(pthread_attr_t *connect_att, DWORD stack)
{
connect_att->dwStackSize= stack;
return 0;
}
int pthread_attr_setprio(pthread_attr_t *connect_att, int priority)
{
connect_att->priority= priority;
return 0;
}
int pthread_attr_destroy(pthread_attr_t *connect_att)
{
bzero((gptr) connect_att, sizeof(*connect_att));
return 0;
}
/****************************************************************************
** Fix localtime_r() to be a bit safer
****************************************************************************/
struct tm *localtime_r(const time_t *timep, struct tm *tmp)
{
if (*timep == (time_t) - 1) /* This will crash win32 */
{
bzero(tmp, sizeof(*tmp));
}
else
{
struct tm *res= localtime(timep);
if (!res) /* Wrong date */
{
bzero(tmp, sizeof(*tmp)); /* Keep things safe */
return 0;
}
*tmp= *res;
}
return tmp;
}
#endif /* __WIN__ */
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