mailbox->cond = NULL;
mailbox->alias = alias ? xbt_strdup(alias) : NULL;
mailbox->hostname = NULL;
-
+ mailbox->rdv = SIMIX_rdv_create(alias);
+
return mailbox;
}
xbt_fifo_free(_mailbox->tasks);
free(_mailbox->alias);
-
+ SIMIX_rdv_destroy(_mailbox->rdv);
+
free(_mailbox);
}
}
MSG_error_t
-MSG_mailbox_get_task_ext(msg_mailbox_t mailbox, m_task_t * task,
+MSG_mailbox_get_task_ext(msg_mailbox_t mailbox, m_task_t *task,
m_host_t host, double timeout)
{
- m_process_t process = MSG_process_self();
- m_task_t t = NULL;
- m_host_t h = NULL;
- simdata_task_t t_simdata = NULL;
- simdata_host_t h_simdata = NULL;
- double start_time = SIMIX_get_clock();
-
- smx_cond_t cond = NULL; //conditional wait if the task isn't on the channel yet
-
+ xbt_ex_t e;
+ MSG_error_t ret;
+ smx_host_t smx_host;
+ size_t task_size = sizeof(void*);
CHECK_HOST();
/* Sanity check */
CRITICAL0
("MSG_task_get() was asked to write in a non empty task struct.");
- /* Get the task */
- h = MSG_host_self();
- h_simdata = h->simdata;
-
- SIMIX_mutex_lock(h->simdata->mutex);
-
- if (MSG_mailbox_get_cond(mailbox)) {
- CRITICAL1("A process is already blocked on the channel %s",
- MSG_mailbox_get_alias(mailbox));
- SIMIX_cond_display_info(MSG_mailbox_get_cond(mailbox));
- xbt_die("Go fix your code!");
+ smx_host = host ? host->simdata->smx_host : NULL;
+
+ TRY{
+ SIMIX_network_recv(mailbox->rdv, timeout, task, &task_size,
+ comm_filter_get, smx_host);
}
-
- while (1) {
- /* if the mailbox is empty (has no task */
- if (!MSG_mailbox_is_empty(mailbox)) {
- if (!host) {
- /* pop the head of the mailbox */
- t = MSG_mailbox_pop_head(mailbox);
+ CATCH(e){
+ switch(e.category){
+ case host_error:
+ ret = MSG_HOST_FAILURE;
break;
- } else {
- /* get the first task of the host */
- if ((t = MSG_mailbox_get_first_host_task(mailbox, host)))
- break;
- }
- }
-
- if ((timeout > 0) && (SIMIX_get_clock() - start_time >= timeout)) {
- SIMIX_mutex_unlock(h->simdata->mutex);
- MSG_mailbox_set_cond(mailbox, NULL);
- SIMIX_cond_destroy(cond);
- MSG_RETURN(MSG_TRANSFER_FAILURE);
- }
-
- if (!cond) {
- cond = SIMIX_cond_init();
- MSG_mailbox_set_cond(mailbox, cond);
- }
-
- if (timeout > 0)
- SIMIX_cond_wait_timeout(cond, h->simdata->mutex, timeout - start_time);
- else
- SIMIX_cond_wait(MSG_mailbox_get_cond(mailbox), h->simdata->mutex);
-
- if (SIMIX_host_get_state(h_simdata->smx_host) == 0) {
- SIMIX_mutex_unlock(h->simdata->mutex);
- MSG_mailbox_set_cond(mailbox, NULL);
- SIMIX_cond_destroy(cond);
- MSG_RETURN(MSG_HOST_FAILURE);
- }
- }
-
-
- DEBUG1("OK, got a task (%s)", t->name);
- /* clean conditional */
- if (cond) {
- MSG_mailbox_set_cond(mailbox, NULL);
- SIMIX_cond_destroy(cond);
- }
-
- SIMIX_mutex_unlock(h->simdata->mutex);
-
- t_simdata = t->simdata;
- t_simdata->receiver = process;
- *task = t;
-
- SIMIX_mutex_lock(t_simdata->mutex);
-
- /* Transfer */
- /* create SIMIX action to the communication */
- t_simdata->comm =
- SIMIX_action_communicate(t_simdata->sender->simdata->m_host->simdata->
- smx_host,
- process->simdata->m_host->simdata->smx_host,
- t->name, t_simdata->message_size,
- t_simdata->rate);
-
- /* This is a hack. We know that both the receiver and the sender will
- need to look at the content of t_simdata->comm. And it needs to be
- destroyed. However, we don't known whether the receiver or the sender
- will get to it first. So by setting with refcount to 2 we can enforce
- that things happen correctly. An alternative would be to only do ++ and
- -- on this refcount and to sprinkle them judiciously throughout the code,
- which appears perhaps worse? Or perhaps the refcount field of
- task->simdata can be used for this? At any rate, this will do for now */
- t_simdata->comm->refcount = 2;
-
- /* if the process is suspend, create the action but stop its execution, it will be restart when the sender process resume */
- if (MSG_process_is_suspended(t_simdata->sender)) {
- DEBUG1("Process sender (%s) suspended", t_simdata->sender->name);
- SIMIX_action_set_priority(t_simdata->comm, 0);
- }
-
- process->simdata->waiting_task = t;
- SIMIX_register_action_to_condition(t_simdata->comm, t_simdata->cond);
-
- while (1) {
- SIMIX_cond_wait(t_simdata->cond, t_simdata->mutex);
-
- if (SIMIX_action_get_state(t_simdata->comm) != SURF_ACTION_RUNNING)
- break;
- }
-
- SIMIX_unregister_action_to_condition(t_simdata->comm, t_simdata->cond);
- process->simdata->waiting_task = NULL;
-
- /* If sender still around (it didn't free the comm yet), note that it's not waiting anymore */
- if (t_simdata->comm->refcount == 2) {
- t->simdata->sender->simdata->waiting_task = NULL;
- }
-
- /* for this process, don't need to change in get function */
- SIMIX_mutex_unlock(t_simdata->mutex);
-
-
- if (SIMIX_action_get_state(t_simdata->comm) == SURF_ACTION_DONE) {
- if (t_simdata->comm->refcount == 1) {
- SIMIX_action_destroy(t_simdata->comm);
- t_simdata->comm = NULL;
- } else {
- t_simdata->comm->refcount--;
- }
- t_simdata->refcount--;
- MSG_RETURN(MSG_OK);
- } else if (SIMIX_host_get_state(h_simdata->smx_host) == 0) {
- if (t_simdata->comm->refcount == 1) {
- SIMIX_action_destroy(t_simdata->comm);
- t_simdata->comm = NULL;
- } else {
- t_simdata->comm->refcount--;
- }
- t_simdata->refcount--;
- MSG_RETURN(MSG_HOST_FAILURE);
- } else {
- if (t_simdata->comm->refcount == 1) {
- SIMIX_action_destroy(t_simdata->comm);
- t_simdata->comm = NULL;
- } else {
- t_simdata->comm->refcount--;
+ case network_error:
+ ret = MSG_TRANSFER_FAILURE;
+ break;
+ case timeout_error:
+ ret = MSG_TRANSFER_FAILURE;
+ break;
+ default:
+ ret = MSG_OK;
+ RETHROW;
+ break;
+ /*xbt_die("Unhandled SIMIX network exception");*/
}
- t_simdata->refcount--;
- MSG_RETURN(MSG_TRANSFER_FAILURE);
+ xbt_ex_free(e);
+ MSG_RETURN(ret);
}
+
+ MSG_RETURN (MSG_OK);
}
MSG_error_t
MSG_mailbox_put_with_timeout(msg_mailbox_t mailbox, m_task_t task,
double timeout)
{
+ xbt_ex_t e;
+ MSG_error_t ret;
m_process_t process = MSG_process_self();
const char *hostname;
simdata_task_t t_simdata = NULL;
m_host_t local_host = NULL;
m_host_t remote_host = NULL;
- smx_cond_t cond = NULL;
CHECK_HOST();
t_simdata->comm = NULL;
- t_simdata->refcount++;
+ /*t_simdata->refcount++;*/
local_host = ((simdata_process_t) process->simdata)->m_host;
msg_global->sent_msg++;
if (!remote_host)
THROW1(not_found_error, 0, "Host %s not fount", hostname);
-
DEBUG4("Trying to send a task (%g kB) from %s to %s on the channel %s",
t_simdata->message_size / 1000, local_host->name,
remote_host->name, MSG_mailbox_get_alias(mailbox));
- SIMIX_mutex_lock(remote_host->simdata->mutex);
-
- /* put the task in the mailbox */
- xbt_fifo_push(mailbox->tasks, task);
-
- if ((cond = MSG_mailbox_get_cond(mailbox))) {
- DEBUG0("Somebody is listening. Let's wake him up!");
- SIMIX_cond_signal(cond);
+ TRY{
+ SIMIX_network_send(mailbox->rdv, t_simdata->message_size, t_simdata->rate,
+ timeout, &task, sizeof(void *), comm_filter_put, NULL);
}
- SIMIX_mutex_unlock(remote_host->simdata->mutex);
-
- SIMIX_mutex_lock(t_simdata->mutex);
-
- process->simdata->waiting_task = task;
-
- if (timeout > 0) {
- xbt_ex_t e;
- double time;
- double time_elapsed;
- time = SIMIX_get_clock();
-
- TRY {
- /*verify if the action that ends is the correct. Call the wait_timeout with the new time. If the timeout occurs, an exception is raised */
- while (1) {
- time_elapsed = SIMIX_get_clock() - time;
- SIMIX_cond_wait_timeout(t_simdata->cond, t_simdata->mutex,
- timeout - time_elapsed);
-
- if ((t_simdata->comm != NULL)
- && (SIMIX_action_get_state(t_simdata->comm) !=
- SURF_ACTION_RUNNING))
- break;
- }
- }
- CATCH(e) {
- if (e.category == timeout_error) {
- xbt_ex_free(e);
- /* verify if the timeout happened and the communication didn't started yet */
- if (t_simdata->comm == NULL) {
- process->simdata->waiting_task = NULL;
-
- /* remove the task from the mailbox */
- MSG_mailbox_remove(mailbox, task);
-
- if (t_simdata->receiver && t_simdata->receiver->simdata) { /* receiver still around */
- t_simdata->receiver->simdata->waiting_task = NULL;
- }
-
- SIMIX_mutex_unlock(t_simdata->mutex);
- MSG_RETURN(MSG_TRANSFER_FAILURE);
- }
- } else {
+ CATCH(e){
+ switch(e.category){
+ case host_error:
+ ret = MSG_HOST_FAILURE;
+ break;
+ case network_error:
+ ret = MSG_TRANSFER_FAILURE;
+ break;
+ case timeout_error:
+ ret = MSG_TRANSFER_FAILURE;
+ break;
+ default:
+ ret = MSG_OK;
RETHROW;
- }
- }
- } else {
- while (1) {
- SIMIX_cond_wait(t_simdata->cond, t_simdata->mutex);
-
- if (SIMIX_action_get_state(t_simdata->comm) != SURF_ACTION_RUNNING)
break;
+ /*xbt_die("Unhandled SIMIX network exception");*/
}
+ xbt_ex_free(e);
+ MSG_RETURN(ret);
}
- DEBUG1("Action terminated %s", task->name);
- process->simdata->waiting_task = NULL;
-
- if (t_simdata->comm->refcount == 2) { //receiver didn't free it yet: he's still around
- t_simdata->receiver->simdata->waiting_task = NULL;
- }
-
- SIMIX_mutex_unlock(task->simdata->mutex);
-
- if (SIMIX_action_get_state(t_simdata->comm) == SURF_ACTION_DONE) {
- if (t_simdata->comm->refcount == 1) {
- SIMIX_action_destroy(t_simdata->comm);
- t_simdata->comm = NULL;
- } else {
- t_simdata->comm->refcount--;
- }
- MSG_RETURN(MSG_OK);
- } else if (SIMIX_host_get_state(local_host->simdata->smx_host) == 0) {
- if (t_simdata->comm->refcount == 1) {
- SIMIX_action_destroy(t_simdata->comm);
- t_simdata->comm = NULL;
- } else {
- t_simdata->comm->refcount--;
- }
- MSG_RETURN(MSG_HOST_FAILURE);
- } else {
- if (t_simdata->comm->refcount == 1) {
- SIMIX_action_destroy(t_simdata->comm);
- t_simdata->comm = NULL;
- } else {
- t_simdata->comm->refcount--;
- }
- MSG_RETURN(MSG_TRANSFER_FAILURE);
- }
+ /* t_simdata->refcount--;*/
+ MSG_RETURN (MSG_OK);
}
