39dbeeedfb
This commit was SVN r6327.
113 строки
2.8 KiB
C
113 строки
2.8 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University.
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* All rights reserved.
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* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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* All rights reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#ifndef OMPI_CONDITION_SPINLOCK_H
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#define OMPI_CONDITION_SPINLOCK_H
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#include "ompi_config.h"
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#include "opal/threads/condition.h"
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#include "opal/threads/mutex.h"
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#include "opal/runtime/opal_progress.h"
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#if defined(c_plusplus) || defined(__cplusplus)
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extern "C" {
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#endif
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struct opal_condition_t {
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opal_object_t super;
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volatile int c_waiting;
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volatile int c_signaled;
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};
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typedef struct opal_condition_t opal_condition_t;
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OMPI_DECLSPEC OBJ_CLASS_DECLARATION(opal_condition_t);
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static inline int opal_condition_wait(opal_condition_t *c, opal_mutex_t *m)
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{
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c->c_waiting++;
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if (opal_using_threads()) {
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while (c->c_signaled == 0) {
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opal_mutex_unlock(m);
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opal_progress();
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opal_mutex_lock(m);
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}
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} else {
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while (c->c_signaled == 0) {
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opal_progress();
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}
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}
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c->c_signaled--;
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c->c_waiting--;
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return 0;
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}
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static inline int opal_condition_timedwait(opal_condition_t *c,
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opal_mutex_t *m,
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const struct timespec *abstime)
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{
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struct timeval tv;
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struct timeval abs;
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abs.tv_sec = abstime->tv_sec;
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abs.tv_usec = abstime->tv_nsec / 1000;
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gettimeofday(&tv,NULL);
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c->c_waiting++;
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if (opal_using_threads()) {
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while (c->c_signaled == 0 &&
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(tv.tv_sec <= abs.tv_sec ||
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(tv.tv_sec == abs.tv_sec && tv.tv_usec < abs.tv_usec))) {
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opal_mutex_unlock(m);
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opal_progress();
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gettimeofday(&tv,NULL);
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opal_mutex_lock(m);
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}
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} else {
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while (c->c_signaled == 0 &&
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(tv.tv_sec <= abs.tv_sec ||
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(tv.tv_sec == abs.tv_sec && tv.tv_usec < abs.tv_usec))) {
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opal_progress();
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gettimeofday(&tv,NULL);
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}
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}
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c->c_signaled--;
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c->c_waiting--;
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return 0;
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}
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static inline int opal_condition_signal(opal_condition_t *c)
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{
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if (c->c_waiting) {
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c->c_signaled++;
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}
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return 0;
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}
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static inline int opal_condition_broadcast(opal_condition_t *c)
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{
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c->c_signaled += c->c_waiting;
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return 0;
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}
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#if defined(c_plusplus) || defined(__cplusplus)
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}
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#endif
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#endif
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