static void _SIMIX_sem_wait(smx_sem_t sem, double timeout, smx_process_t issuer,
smx_simcall_t simcall)
{
XBT_IN("(%p, %f, %p, %p)",sem,timeout,issuer,simcall);
smx_action_t sync_act = NULL;
XBT_DEBUG("Wait semaphore %p (timeout:%f)", sem, timeout);
if (sem->value <= 0) {
sync_act = SIMIX_synchro_wait(issuer->smx_host, timeout);
xbt_fifo_unshift(sync_act->simcalls, simcall);
issuer->waiting_action = sync_act;
xbt_swag_insert(issuer, sem->sleeping);
} else {
sem->value--;
SIMIX_simcall_answer(simcall);
}
XBT_OUT();
}
static void _SIMIX_sem_wait(smx_sem_t sem, double timeout, smx_actor_t issuer,
smx_simcall_t simcall)
{
XBT_IN("(%p, %f, %p, %p)",sem,timeout,issuer,simcall);
smx_activity_t synchro = nullptr;
XBT_DEBUG("Wait semaphore %p (timeout:%f)", sem, timeout);
if (sem->value <= 0) {
synchro = SIMIX_synchro_wait(issuer->host, timeout);
synchro->simcalls.push_front(simcall);
issuer->waiting_synchro = synchro;
xbt_swag_insert(issuer, sem->sleeping);
} else {
sem->value--;
SIMIX_simcall_answer(simcall);
}
XBT_OUT();
}
static void _SIMIX_cond_wait(smx_cond_t cond, smx_mutex_t mutex, double timeout,
smx_process_t issuer, smx_simcall_t simcall)
{
XBT_IN("(%p, %p, %f, %p,%p)",cond,mutex,timeout,issuer,simcall);
smx_action_t sync_act = NULL;
XBT_DEBUG("Wait condition %p", cond);
/* If there is a mutex unlock it */
/* FIXME: what happens if the issuer is not the owner of the mutex? */
if (mutex != NULL) {
cond->mutex = mutex;
SIMIX_mutex_unlock(mutex, issuer);
}
sync_act = SIMIX_synchro_wait(issuer->smx_host, timeout);
xbt_fifo_unshift(sync_act->simcalls, simcall);
issuer->waiting_action = sync_act;
xbt_swag_insert(simcall->issuer, cond->sleeping);
XBT_OUT();
}
static void _SIMIX_cond_wait(smx_cond_t cond, smx_mutex_t mutex, double timeout,
smx_actor_t issuer, smx_simcall_t simcall)
{
XBT_IN("(%p, %p, %f, %p,%p)",cond,mutex,timeout,issuer,simcall);
smx_activity_t synchro = nullptr;
XBT_DEBUG("Wait condition %p", cond);
/* If there is a mutex unlock it */
/* FIXME: what happens if the issuer is not the owner of the mutex? */
if (mutex != nullptr) {
cond->mutex = mutex;
mutex->unlock(issuer);
}
synchro = SIMIX_synchro_wait(issuer->host, timeout);
synchro->simcalls.push_front(simcall);
issuer->waiting_synchro = synchro;
xbt_swag_insert(simcall->issuer, cond->sleeping);
XBT_OUT();
}
void Mutex::lock(smx_actor_t issuer)
{
XBT_IN("(%p; %p)", this, issuer);
/* FIXME: check where to validate the arguments */
smx_activity_t synchro = nullptr;
if (this->locked) {
/* FIXME: check if the host is active ? */
/* Somebody using the mutex, use a synchronization to get host failures */
synchro = SIMIX_synchro_wait(issuer->host, -1);
synchro->simcalls.push_back(&issuer->simcall);
issuer->waiting_synchro = synchro;
xbt_swag_insert(issuer, this->sleeping);
} else {
/* mutex free */
this->locked = true;
this->owner = issuer;
SIMIX_simcall_answer(&issuer->simcall);
}
XBT_OUT();
}
/**
* \brief Handles a mutex lock simcall.
* \param simcall the simcall
*/
void SIMIX_pre_mutex_lock(smx_simcall_t simcall, smx_mutex_t mutex)
{
XBT_IN("(%p)",simcall);
/* FIXME: check where to validate the arguments */
smx_action_t sync_act = NULL;
smx_process_t process = simcall->issuer;
if (mutex->locked) {
/* FIXME: check if the host is active ? */
/* Somebody using the mutex, use a synchro action to get host failures */
sync_act = SIMIX_synchro_wait(process->smx_host, -1);
xbt_fifo_push(sync_act->simcalls, simcall);
simcall->issuer->waiting_action = sync_act;
xbt_swag_insert(simcall->issuer, mutex->sleeping);
} else {
/* mutex free */
mutex->locked = 1;
mutex->owner = simcall->issuer;
SIMIX_simcall_answer(simcall);
}
XBT_OUT();
}