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/*___INFO__MARK_BEGIN__*/
/*************************************************************************
*
* The Contents of this file are made available subject to the terms of
* the Sun Industry Standards Source License Version 1.2
*
* Sun Microsystems Inc., March, 2001
*
*
* Sun Industry Standards Source License Version 1.2
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.2 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://gridengine.sunsource.net/Gridengine_SISSL_license.html
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2003 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
************************************************************************/
/*___INFO__MARK_END__*/
#include <stdlib.h>
#include <pthread.h>
#include <string.h>
#include <sys/time.h>
/* do not compile in monitoring code */
#ifndef NO_SGE_COMPILE_DEBUG
#define NO_SGE_COMPILE_DEBUG
#endif
#include "uti/sge_rmon.h"
#include "uti/sge_log.h"
#include "uti/sge_time.h"
#include "uti/msg_lcklib.h"
/* enable or disable lock printing*/
/* #define PRINT_LOCK */
/****** sge_mtutil/sge_mutex_lock() ********************************************
* NAME
* sge_mutex_lock() -- Mutex locking wrapper with rmon monitoring
*
* SYNOPSIS
* void sge_mutex_lock(const char *mutex_name, const char *func,
* int line, pthread_mutex_t *mutex)
*
* FUNCTION
* Locks the passed mutex. Before and after locking rmon DLOCKPRINTF()
* is used to facilitate tracking of deadlocks that are caused by
* mutexes.
*
* INPUTS
* const char *mutex_name - The name of the mutex.
* const char *func - The function where sge_mutex_lock()
* was called from
* int line - The line number where sge_mutex_lock()
* was called from
* pthread_mutex_t *mutex - The mutex.
*
* NOTES
* MT-NOTE: sge_mutex_lock() is MT-safe
* MT-NOTE:
* MT-NOTE: This function is considered being MT-safe, even though is does
* MT-NOTE: use 'strerror()'. The error message returned from 'strerror()'
* MT-NOTE: is not stored and used imediately.
*
* SEE ALSO
* sge_mtutil/sge_mutex_unlock()
*******************************************************************************/
#ifdef SGE_LOCK_DEBUG
void sge_mutex_lock(const char *mutex_name, const char *func, int line, pthread_mutex_t *mutex)
{
int res = -1;
DENTER(BASIS_LAYER, "sge_mutex_lock");
DLOCKPRINTF(("%s() line %d: about to lock mutex \"%s\" : %u\n", func, line, mutex_name, sge_get_gmt()));
#ifdef PRINT_LOCK
{
struct timeval now;
gettimeofday(&now, NULL);
printf("%ld lock %lu:%lus %s\n", (long int) pthread_self(),now.tv_sec, (long unsigned)now.tv_usec, mutex_name);
}
#endif
if (( res = pthread_mutex_lock(mutex)) != 0) {
CRITICAL((SGE_EVENT, MSG_LCK_MUTEXLOCKFAILED_SSS, func, mutex_name, strerror(res)));
abort();
}
DLOCKPRINTF(("%s() line %d: locked mutex \"%s\" : %u\n", func, line, mutex_name, sge_get_gmt()));
#ifdef PRINT_LOCK
{
struct timeval now;
gettimeofday(&now, NULL);
printf("%ld got lock %lu:%lu %s\n", (long int) pthread_self(),now.tv_sec, now.tv_usec, mutex_name);
}
#endif
DRETURN_VOID;
} /* sge_mutex_lock() */
#else
void sge_mutex_lock(const char *mutex_name, const char *func, int line, pthread_mutex_t *mutex)
{
int res = -1;
DENTER(BASIS_LAYER, "sge_mutex_lock");
if (( res = pthread_mutex_lock(mutex)) != 0) {
CRITICAL((SGE_EVENT, MSG_LCK_MUTEXLOCKFAILED_SSS, func, mutex_name, strerror(res)));
abort();
}
DRETURN_VOID;
} /* sge_mutex_lock() */
#endif
/****** sge_mtutil/sge_mutex_unlock() ********************************************
* NAME
* sge_mutex_unlock() -- Mutex unlocking wrapper with rmon monitoring
*
* SYNOPSIS
* void sge_mutex_unlock(const char *mutex_name, const char *func,
* int line, pthread_mutex_t *mutex)
*
* FUNCTION
* Unlocks the passed mutex. Before and after unlocking rmon DLOCKPRINTF()
* is used to facilitate tracking of deadlocks that are caused by
* mutexes.
*
* INPUTS
* const char *mutex_name - The name of the mutex.
* const char *func - The function where sge_unmutex_unlock()
* was called from
* int line - The line number where sge_unmutex_lock()
* was called from
* pthread_mutex_t *mutex - The mutex.
*
* NOTES
* MT-NOTE: sge_mutex_unlock() is MT-safe
* MT-NOTE:
* MT-NOTE: This function is considered being MT-safe, even though is does
* MT-NOTE: use 'strerror()'. The error message returned from 'strerror()'
* MT-NOTE: is not stored and used imediately.
*
* SEE ALSO
* sge_mtutil/sge_mutex_lock()
*******************************************************************************/
#ifdef SGE_LOCK_DEBUG
void sge_mutex_unlock(const char *mutex_name, const char *func, int line, pthread_mutex_t *mutex)
{
int res = -1;
DENTER(BASIS_LAYER, "sge_mutex_unlock");
if (( res = pthread_mutex_unlock(mutex)) != 0)
{
CRITICAL((SGE_EVENT, MSG_LCK_MUTEXUNLOCKFAILED_SSS, func, mutex_name, strerror(res)));
abort();
}
#ifdef PRINT_LOCK
{
struct timeval now;
gettimeofday(&now, NULL);
printf("%ld unlock %lu:%lu %s\n", (long int) pthread_self(),now.tv_sec, now.tv_usec, mutex_name);
}
#endif
DLOCKPRINTF(("%s() line %d: unlocked mutex \"%s\"\n", func, line, mutex_name));
DRETURN_VOID;
} /* sge_mutex_unlock() */
#else
void sge_mutex_unlock(const char *mutex_name, const char *func, int line, pthread_mutex_t *mutex)
{
int res = -1;
DENTER(BASIS_LAYER, "sge_mutex_unlock");
if (( res = pthread_mutex_unlock(mutex)) != 0)
{
CRITICAL((SGE_EVENT, MSG_LCK_MUTEXUNLOCKFAILED_SSS, func, mutex_name, strerror(res)));
abort();
}
DRETURN_VOID;
} /* sge_mutex_unlock() */
#endif
/****** sge_mtutil/sge_relative_timespec() **************************************
* NAME
* sge_relative_timespec() -- set timespec to now plus timeout
*
* SYNOPSIS
* static void sge_relative_timespec(signed long timeout, struct
* timespec *ts)
*
* FUNCTION
* Based on the relative timeout passed an absolute timespec is
* returned. The timespec can e.g. be used for pthread_cond_timedwait().
* Also a timout of 0 can be used. However if the timespec returned is then
* used with pthread_cond_timedwait() this requires the predicate is checked
* once at least.
*
* INPUTS
* signed long timeout - A relative timeout interval or 0
*
* OUTPUTS
* struct timespec *ts - An abstime timespec value
*
* NOTES
* MT-NOTE: sge_relative_timespec() is MT safe
*******************************************************************************/
void sge_relative_timespec(signed long timeout, struct timespec *ts)
{
struct timeval now;
/* in examples also clock_gettime(CLOCK_REALTIME, &ts) was used */
gettimeofday(&now, NULL);
ts->tv_sec = now.tv_sec;
ts->tv_nsec = now.tv_usec * 1000;
if (timeout != 0)
ts->tv_sec += timeout;
/* in case of DRMAA_TIMEOUT_NO_WAIT the current system time
can be used assumed the predicate is checked once at least */
return;
}
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