*/
smx_mutex_t SIMIX_mutex_init()
{
- smx_mutex_t m = xbt_new0(s_smx_mutex_t,1);
- s_smx_process_t p; /* useful to initialize sleeping swag */
- /* structures initialization */
- m->using = 0;
- m->sleeping = xbt_swag_new(xbt_swag_offset(p, synchro_hookup));
- return m;
+ smx_mutex_t m = xbt_new0(s_smx_mutex_t, 1);
+ s_smx_process_t p; /* useful to initialize sleeping swag */
+ /* structures initialization */
+ m->using = 0;
+ m->sleeping = xbt_swag_new(xbt_swag_offset(p, synchro_hookup));
+ return m;
}
/**
*/
void SIMIX_mutex_lock(smx_mutex_t mutex)
{
- smx_process_t self = SIMIX_process_self();
- xbt_assert0((mutex != NULL), "Invalid parameters");
-
-
- if (mutex->using) {
- /* somebody using the mutex, block */
- xbt_swag_insert(self, mutex->sleeping);
- self->simdata->mutex = mutex;
- /* wait for some process make the unlock and wake up me from mutex->sleeping */
- xbt_context_yield();
- self->simdata->mutex = NULL;
-
- /* verify if the process was suspended */
- while (self->simdata->suspended) {
- xbt_context_yield();
- }
-
- mutex->using = 1;
- }
- else {
- /* mutex free */
- mutex->using = 1;
- }
- return;
+ smx_process_t self = SIMIX_process_self();
+ xbt_assert0((mutex != NULL), "Invalid parameters");
+
+
+ if (mutex->using) {
+ /* somebody using the mutex, block */
+ xbt_swag_insert(self, mutex->sleeping);
+ self->simdata->mutex = mutex;
+ /* wait for some process make the unlock and wake up me from mutex->sleeping */
+ xbt_context_yield();
+ self->simdata->mutex = NULL;
+
+ /* verify if the process was suspended */
+ while (self->simdata->suspended) {
+ xbt_context_yield();
+ }
+
+ mutex->using = 1;
+ } else {
+ /* mutex free */
+ mutex->using = 1;
+ }
+ return;
}
/**
*/
int SIMIX_mutex_trylock(smx_mutex_t mutex)
{
- xbt_assert0((mutex != NULL), "Invalid parameters");
-
- if (mutex->using)
- return 0;
- else {
- mutex->using = 1;
- return 1;
- }
+ xbt_assert0((mutex != NULL), "Invalid parameters");
+
+ if (mutex->using)
+ return 0;
+ else {
+ mutex->using = 1;
+ return 1;
+ }
}
/**
*/
void SIMIX_mutex_unlock(smx_mutex_t mutex)
{
- smx_process_t p; /*process to wake up */
-
- xbt_assert0((mutex != NULL), "Invalid parameters");
-
- if (xbt_swag_size(mutex->sleeping) > 0) {
- p = xbt_swag_extract(mutex->sleeping);
- mutex->using = 0;
- xbt_swag_insert(p, simix_global->process_to_run);
- }
- else {
- /* nobody to wake up */
- mutex->using = 0;
- }
- return;
+ smx_process_t p; /*process to wake up */
+
+ xbt_assert0((mutex != NULL), "Invalid parameters");
+
+ if (xbt_swag_size(mutex->sleeping) > 0) {
+ p = xbt_swag_extract(mutex->sleeping);
+ mutex->using = 0;
+ xbt_swag_insert(p, simix_global->process_to_run);
+ } else {
+ /* nobody to wake up */
+ mutex->using = 0;
+ }
+ return;
}
/**
*/
void SIMIX_mutex_destroy(smx_mutex_t mutex)
{
- if ( mutex == NULL )
- return ;
- else {
- xbt_swag_free(mutex->sleeping);
- xbt_free(mutex);
- return ;
- }
+ if (mutex == NULL)
+ return;
+ else {
+ xbt_swag_free(mutex->sleeping);
+ xbt_free(mutex);
+ return;
+ }
}
/******************************** Conditional *********************************/
*/
smx_cond_t SIMIX_cond_init()
{
- smx_cond_t cond = xbt_new0(s_smx_cond_t,1);
- s_smx_process_t p;
-
- cond->sleeping = xbt_swag_new(xbt_swag_offset(p,synchro_hookup));
- cond->actions = xbt_fifo_new();
- cond->mutex = NULL;
- return cond;
+ smx_cond_t cond = xbt_new0(s_smx_cond_t, 1);
+ s_smx_process_t p;
+
+ cond->sleeping = xbt_swag_new(xbt_swag_offset(p, synchro_hookup));
+ cond->actions = xbt_fifo_new();
+ cond->mutex = NULL;
+ return cond;
}
/**
*/
void SIMIX_cond_signal(smx_cond_t cond)
{
- xbt_assert0((cond != NULL), "Invalid parameters");
smx_process_t proc = NULL;
+ DEBUG1("Signal condition %p", cond);
+ xbt_assert0((cond != NULL), "Invalid parameters");
+
- if (xbt_swag_size(cond->sleeping) >= 1) {
- proc = xbt_swag_extract(cond->sleeping);
- xbt_swag_insert(proc, simix_global->process_to_run);
- }
+ if (xbt_swag_size(cond->sleeping) >= 1) {
+ proc = xbt_swag_extract(cond->sleeping);
+ xbt_swag_insert(proc, simix_global->process_to_run);
+ }
- return;
+ return;
}
/**
* \param cond A condition
* \param mutex A mutex
*/
-void SIMIX_cond_wait(smx_cond_t cond,smx_mutex_t mutex)
+void SIMIX_cond_wait(smx_cond_t cond, smx_mutex_t mutex)
{
- smx_action_t act_sleep;
- xbt_assert0((mutex != NULL), "Invalid parameters");
-
- cond->mutex = mutex;
-
- SIMIX_mutex_unlock(mutex);
- /* create an action null only if there are no actions already on the condition, usefull if the host crashs */
- if (xbt_fifo_size(cond->actions) ==0 ) {
- act_sleep = SIMIX_action_sleep(SIMIX_host_self(), -1);
- SIMIX_register_action_to_condition(act_sleep,cond);
- SIMIX_register_condition_to_action(act_sleep,cond);
- __SIMIX_cond_wait(cond);
- xbt_fifo_pop(act_sleep->cond_list);
- SIMIX_action_destroy(act_sleep);
- }
- else {
- __SIMIX_cond_wait(cond);
- }
- /* get the mutex again */
- SIMIX_mutex_lock(cond->mutex);
-
- return;
+ smx_action_t act_sleep;
+ xbt_assert0((mutex != NULL), "Invalid parameters");
+
+ DEBUG1("Wait condition %p", cond);
+ cond->mutex = mutex;
+
+ SIMIX_mutex_unlock(mutex);
+ /* always create an action null in case there is a host failure */
+/* if (xbt_fifo_size(cond->actions) == 0) { */
+ act_sleep = SIMIX_action_sleep(SIMIX_host_self(), -1);
+ SIMIX_register_action_to_condition(act_sleep, cond);
+ __SIMIX_cond_wait(cond);
+ SIMIX_unregister_action_to_condition(act_sleep, cond);
+ SIMIX_action_destroy(act_sleep);
+/* } else { */
+/* __SIMIX_cond_wait(cond); */
+/* } */
+ /* get the mutex again */
+ SIMIX_mutex_lock(cond->mutex);
+
+ return;
}
+xbt_fifo_t SIMIX_cond_get_actions(smx_cond_t cond)
+{
+ xbt_assert0((cond != NULL), "Invalid parameters");
+ return cond->actions;
+}
void __SIMIX_cond_wait(smx_cond_t cond)
{
- smx_process_t self = SIMIX_process_self();
- xbt_assert0((cond != NULL), "Invalid parameters");
-
- /* process status */
-
- self->simdata->cond = cond;
- xbt_swag_insert(self, cond->sleeping);
- xbt_context_yield();
- self->simdata->cond = NULL;
- while (self->simdata->suspended) {
- xbt_context_yield();
- }
- return;
+ smx_process_t self = SIMIX_process_self();
+ xbt_assert0((cond != NULL), "Invalid parameters");
+
+ /* process status */
+
+ self->simdata->cond = cond;
+ xbt_swag_insert(self, cond->sleeping);
+ xbt_context_yield();
+ self->simdata->cond = NULL;
+ while (self->simdata->suspended) {
+ xbt_context_yield();
+ }
+ return;
}
/**
* \brief Waits on a condition with timeout.
*
- * Same behavior of #SIMIX_cond_wait, but waits a maximum time.
+ * Same behavior of #SIMIX_cond_wait, but waits a maximum time and throws an timeout_error if it happens.
* \param cond A condition
* \param mutex A mutex
* \param max_duration Timeout time
*/
-void SIMIX_cond_wait_timeout(smx_cond_t cond,smx_mutex_t mutex, double max_duration)
+void SIMIX_cond_wait_timeout(smx_cond_t cond, smx_mutex_t mutex,
+ double max_duration)
{
- xbt_assert0((mutex != NULL), "Invalid parameters");
- smx_action_t act_sleep;
-
- cond->mutex = mutex;
-
- SIMIX_mutex_unlock(mutex);
- if (max_duration >=0) {
- act_sleep = SIMIX_action_sleep(SIMIX_host_self(), max_duration);
- SIMIX_register_action_to_condition(act_sleep,cond);
- SIMIX_register_condition_to_action(act_sleep,cond);
- }
- __SIMIX_cond_wait(cond);
-
- /* get the mutex again */
- SIMIX_mutex_lock(cond->mutex);
-
- return;
+
+ smx_action_t act_sleep;
+ xbt_assert0((mutex != NULL), "Invalid parameters");
+
+ DEBUG1("Timed wait condition %p", cond);
+ cond->mutex = mutex;
+
+ SIMIX_mutex_unlock(mutex);
+ if (max_duration >= 0) {
+ act_sleep = SIMIX_action_sleep(SIMIX_host_self(), max_duration);
+ SIMIX_register_action_to_condition(act_sleep, cond);
+ __SIMIX_cond_wait(cond);
+ SIMIX_unregister_action_to_condition(act_sleep, cond);
+ if (SIMIX_action_get_state(act_sleep) == SURF_ACTION_DONE) {
+ SIMIX_action_destroy(act_sleep);
+ THROW0(timeout_error, 0, "Condition timeout");
+ } else {
+ SIMIX_action_destroy(act_sleep);
+ }
+
+ } else
+ __SIMIX_cond_wait(cond);
+
+ /* get the mutex again */
+ SIMIX_mutex_lock(cond->mutex);
+
+ return;
}
/**
*/
void SIMIX_cond_broadcast(smx_cond_t cond)
{
- xbt_assert0((cond != NULL), "Invalid parameters");
- smx_process_t proc = NULL;
- smx_process_t proc_next = NULL;
+ smx_process_t proc = NULL;
+ smx_process_t proc_next = NULL;
- xbt_swag_foreach_safe(proc,proc_next,cond->sleeping) {
- xbt_swag_remove(proc,cond->sleeping);
- xbt_swag_insert(proc, simix_global->process_to_run);
- }
+ xbt_assert0((cond != NULL), "Invalid parameters");
- return;
+ DEBUG1("Broadcast condition %p", cond);
+ xbt_swag_foreach_safe(proc, proc_next, cond->sleeping) {
+ xbt_swag_remove(proc, cond->sleeping);
+ xbt_swag_insert(proc, simix_global->process_to_run);
+ }
+
+ return;
}
/**
*/
void SIMIX_cond_destroy(smx_cond_t cond)
{
- if ( cond == NULL )
- return ;
- else {
- xbt_assert0( xbt_swag_size(cond->sleeping) == 0 , "Cannot destroy conditional");
- xbt_swag_free(cond->sleeping);
- xbt_fifo_free(cond->actions);
- xbt_free(cond);
- return;
- }
-}
-
-/**
- * \brief Set a condition to an action
- *
- * Creates the "link" between an action and a condition. You have to call this function when you create an action and want to wait its ending.
- * \param action SIMIX action
- * \param cond SIMIX cond
- */
-void SIMIX_register_condition_to_action(smx_action_t action, smx_cond_t cond)
-{
- xbt_assert0( (action != NULL) && (cond != NULL), "Invalid parameters");
-
- xbt_fifo_push(action->cond_list,cond);
+ DEBUG1("Destroy condition %p", cond);
+ if (cond == NULL)
+ return;
+ else {
+ xbt_fifo_item_t item = NULL;
+ smx_action_t action = NULL;
+
+ xbt_assert0(xbt_swag_size(cond->sleeping) == 0,
+ "Cannot destroy conditional since someone is still using it");
+ xbt_swag_free(cond->sleeping);
+
+ DEBUG1("%d actions registered", xbt_fifo_size(cond->actions));
+ __SIMIX_cond_display_actions(cond);
+ xbt_fifo_foreach(cond->actions, item, action, smx_action_t) {
+ SIMIX_unregister_action_to_condition(action, cond);
+ }
+ __SIMIX_cond_display_actions(cond);
+
+ xbt_fifo_free(cond->actions);
+ xbt_free(cond);
+ return;
+ }
}
-
-
