+/* Mailboxes in MSG */
+
+/* Copyright (c) 2008, 2009, 2010. The SimGrid Team.
+ * All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
#include "mailbox.h"
#include "msg/private.h"
-
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_mailbox, msg,
"Logging specific to MSG (mailbox)");
-static xbt_dict_t msg_mailboxes = NULL;
-
-void MSG_mailbox_mod_init(void)
-{
- msg_mailboxes = xbt_dict_new();
-}
-
-void MSG_mailbox_mod_exit(void)
-{
- xbt_dict_free(&msg_mailboxes);
-}
-
-msg_mailbox_t MSG_mailbox_create(const char *alias)
-{
- msg_mailbox_t mailbox = xbt_new0(s_msg_mailbox_t, 1);
-
- mailbox->tasks = xbt_fifo_new();
- mailbox->cond = NULL;
- mailbox->alias = alias ? xbt_strdup(alias) : NULL;
- mailbox->hostname = NULL;
-
- return mailbox;
-}
-
msg_mailbox_t MSG_mailbox_new(const char *alias)
{
- msg_mailbox_t mailbox = MSG_mailbox_create(alias);
-
- /* add the mbox in the dictionary */
- xbt_dict_set(msg_mailboxes, alias, mailbox, MSG_mailbox_free);
-
- return mailbox;
+ return SIMIX_req_rdv_create(alias);
}
void MSG_mailbox_free(void *mailbox)
{
- msg_mailbox_t _mailbox = (msg_mailbox_t) mailbox;
-
- if (_mailbox->hostname)
- free(_mailbox->hostname);
-
- xbt_fifo_free(_mailbox->tasks);
- free(_mailbox->alias);
-
- free(_mailbox);
-}
-
-smx_cond_t MSG_mailbox_get_cond(msg_mailbox_t mailbox)
-{
- return mailbox->cond;
-}
-
-void MSG_mailbox_remove(msg_mailbox_t mailbox, m_task_t task)
-{
- xbt_fifo_remove(mailbox->tasks, task);
+ SIMIX_req_rdv_destroy((msg_mailbox_t)mailbox);
}
int MSG_mailbox_is_empty(msg_mailbox_t mailbox)
{
- return (NULL == xbt_fifo_get_first_item(mailbox->tasks));
-}
-
-m_task_t MSG_mailbox_pop_head(msg_mailbox_t mailbox)
-{
- return (m_task_t) xbt_fifo_shift(mailbox->tasks);
+ return (NULL == SIMIX_req_rdv_get_head(mailbox));
}
m_task_t MSG_mailbox_get_head(msg_mailbox_t mailbox)
{
- xbt_fifo_item_t item;
+ smx_action_t comm = SIMIX_req_rdv_get_head(mailbox);
- if (!(item = xbt_fifo_get_first_item(mailbox->tasks)))
+ if (!comm)
return NULL;
- return (m_task_t) xbt_fifo_get_item_content(item);
-}
-
-
-m_task_t MSG_mailbox_get_first_host_task(msg_mailbox_t mailbox, m_host_t host)
-{
- m_task_t task = NULL;
- xbt_fifo_item_t item = NULL;
-
- xbt_fifo_foreach(mailbox->tasks, item, task, m_task_t)
- if (task->simdata->source == host) {
- xbt_fifo_remove_item(mailbox->tasks, item);
- return task;
- }
-
- return NULL;
+ return (m_task_t) SIMIX_req_comm_get_src_data(comm);
}
int
-MSG_mailbox_get_count_host_waiting_tasks(msg_mailbox_t mailbox, m_host_t host)
-{
- m_task_t task = NULL;
- xbt_fifo_item_t item = NULL;
- int count = 0;
-
- xbt_fifo_foreach(mailbox->tasks, item, task, m_task_t) {
- if (task->simdata->source == host)
- count++;
- }
-
- return count;
-}
-
-void MSG_mailbox_set_cond(msg_mailbox_t mailbox, smx_cond_t cond)
-{
- mailbox->cond = cond;
-}
-
-const char *MSG_mailbox_get_alias(msg_mailbox_t mailbox)
-{
- return mailbox->alias;
-}
-
-const char *MSG_mailbox_get_hostname(msg_mailbox_t mailbox)
-{
- return mailbox->hostname;
-}
-
-void MSG_mailbox_set_hostname(msg_mailbox_t mailbox, const char *hostname)
+MSG_mailbox_get_count_host_waiting_tasks(msg_mailbox_t mailbox,
+ m_host_t host)
{
- mailbox->hostname = xbt_strdup(hostname);
+ return SIMIX_req_rdv_comm_count_by_host(mailbox,
+ host->simdata->smx_host);
}
msg_mailbox_t MSG_mailbox_get_by_alias(const char *alias)
{
- msg_mailbox_t mailbox = xbt_dict_get_or_null(msg_mailboxes, alias);
+ msg_mailbox_t mailbox = SIMIX_req_rdv_get_by_name(alias);
- if (!mailbox) {
+ if (!mailbox)
mailbox = MSG_mailbox_new(alias);
- MSG_mailbox_set_hostname(mailbox, MSG_host_self()->name);
- }
return mailbox;
}
-msg_mailbox_t MSG_mailbox_get_by_channel(m_host_t host, m_channel_t channel)
+msg_mailbox_t MSG_mailbox_get_by_channel(m_host_t host,
+ m_channel_t channel)
{
- xbt_assert0((host != NULL), "Invalid host");
- xbt_assert1((channel >= 0)
+ xbt_assert((host != NULL), "Invalid host");
+ xbt_assert((channel >= 0)
&& (channel < msg_global->max_channel), "Invalid channel %d",
channel);
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 = MSG_OK;
+ /* We no longer support getting a task from a specific host */
+ if (host)
+ THROW_UNIMPLEMENTED;
CHECK_HOST();
+#ifdef HAVE_TRACING
+ TRACE_msg_task_get_start();
+ double start_time = MSG_get_clock();
+#endif
/* Sanity check */
- xbt_assert0(task, "Null pointer for the task storage");
+ xbt_assert(task, "Null pointer for the task storage");
if (*task)
- 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!");
- }
-
- 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);
- 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);
-
- SIMIX_action_use(t_simdata->comm);
-
- /* 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);
+ XBT_CRITICAL
+ ("MSG_task_get() was asked to write in a non empty task struct.");
+
+ /* Try to receive it by calling SIMIX network layer */
+ TRY {
+ SIMIX_req_comm_recv(mailbox, task, NULL, NULL, NULL, timeout);
+ XBT_DEBUG("Got task %s from %p",(*task)->name,mailbox);
+ (*task)->simdata->isused=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)
+ CATCH(e) {
+ switch (e.category) {
+ case host_error:
+ ret = MSG_HOST_FAILURE;
break;
- if (!SIMIX_host_get_state(h_simdata->smx_host))
+ case network_error:
+ ret = MSG_TRANSFER_FAILURE;
break;
- if (!SIMIX_host_get_state(process->simdata->m_host->simdata->smx_host))
+ case timeout_error:
+ ret = MSG_TIMEOUT;
break;
+ default:
+ RETHROW;
+ }
+ xbt_ex_free(e);
}
- SIMIX_unregister_action_to_condition(t_simdata->comm, t_simdata->cond);
- process->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 (SIMIX_action_destroy(t_simdata->comm))
- t_simdata->comm = NULL;
- MSG_RETURN(MSG_OK);
- } else if (SIMIX_host_get_state(h_simdata->smx_host) == 0) {
- if (SIMIX_action_destroy(t_simdata->comm))
- t_simdata->comm = NULL;
- MSG_RETURN(MSG_HOST_FAILURE);
- } else {
- if (SIMIX_action_destroy(t_simdata->comm))
- t_simdata->comm = NULL;
- MSG_RETURN(MSG_TRANSFER_FAILURE);
+#ifdef HAVE_TRACING
+ if (ret != MSG_HOST_FAILURE &&
+ ret != MSG_TRANSFER_FAILURE &&
+ ret != MSG_TIMEOUT) {
+ TRACE_msg_task_get_end(start_time, *task);
}
+#endif
+ MSG_RETURN(ret);
}
MSG_error_t
MSG_mailbox_put_with_timeout(msg_mailbox_t mailbox, m_task_t task,
double timeout)
{
- m_process_t process = MSG_process_self();
- const char *hostname;
+ xbt_ex_t e;
+ MSG_error_t ret = MSG_OK;
simdata_task_t t_simdata = NULL;
- m_host_t local_host = NULL;
- m_host_t remote_host = NULL;
- smx_cond_t cond = NULL;
-
+ m_process_t process = MSG_process_self();
+ simdata_process_t p_simdata = SIMIX_process_self_get_data();
+#ifdef HAVE_TRACING
+ volatile smx_action_t comm = NULL;
+ int call_end = 0;
+#endif
CHECK_HOST();
+#ifdef HAVE_TRACING
+ call_end = TRACE_msg_task_put_start(task); //must be after CHECK_HOST()
+#endif
+
+ /* Prepare the task to send */
t_simdata = task->simdata;
t_simdata->sender = process;
- t_simdata->source = MSG_process_get_host(process);
+ t_simdata->source = MSG_host_self();
- xbt_assert0(t_simdata->refcount == 1,
+ xbt_assert(t_simdata->isused == 0,
"This task is still being used somewhere else. You cannot send it now. Go fix your code!");
- t_simdata->comm = NULL;
-
- t_simdata->refcount++;
- local_host = ((simdata_process_t) process->simdata)->m_host;
+ t_simdata->isused=1;
msg_global->sent_msg++;
- /* get the host name containing the mailbox */
- hostname = MSG_mailbox_get_hostname(mailbox);
-
- remote_host = MSG_get_host_by_name(hostname);
- 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);
+ p_simdata->waiting_task = task;
+
+ /* Try to send it by calling SIMIX network layer */
+ TRY {
+#ifdef HAVE_TRACING
+ if (TRACE_is_active()) {
+ comm = SIMIX_req_comm_isend(mailbox, t_simdata->message_size,
+ t_simdata->rate, task, sizeof(void *),
+ NULL, NULL, 0);
+ t_simdata->comm = comm;
+ SIMIX_req_set_category(comm, task->category);
+ SIMIX_req_comm_wait(comm, timeout);
+ } else {
+#endif
+ SIMIX_req_comm_send(mailbox, t_simdata->message_size,
+ t_simdata->rate, task, sizeof(void*),
+ NULL, NULL, timeout);
+#ifdef HAVE_TRACING
+ }
+#endif
}
- 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)
- SIMIX_action_use(t_simdata->comm);
- if (t_simdata->comm && (SIMIX_action_get_state(t_simdata->comm) !=
- SURF_ACTION_RUNNING))
- break;
- if (!SIMIX_host_get_state(local_host->simdata->smx_host))
- break;
- if (!SIMIX_host_get_state(remote_host->simdata->smx_host))
- 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) {
- DEBUG1("Action terminated %s (there was a timeout)", task->name);
- 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 {
- RETHROW;
- }
- }
- } else {
- while (1) {
- SIMIX_cond_wait(t_simdata->cond, t_simdata->mutex);
-
- if (t_simdata->comm)
- SIMIX_action_use(t_simdata->comm);
- if (t_simdata->comm
- && SIMIX_action_get_state(t_simdata->comm) != SURF_ACTION_RUNNING)
- break;
- if (!SIMIX_host_get_state(local_host->simdata->smx_host))
- break;
- if (!SIMIX_host_get_state(remote_host->simdata->smx_host))
- break;
+ 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_TIMEOUT;
+ break;
+ default:
+ RETHROW;
}
- }
+ xbt_ex_free(e);
- DEBUG1("Action terminated %s", task->name);
- process->simdata->waiting_task = NULL;
-/* if (t_simdata->receiver && t_simdata->receiver->simdata) { /\* receiver still around *\/ */
-/* t_simdata->receiver->simdata->waiting_task = NULL; */
-/* } */
-
- SIMIX_mutex_unlock(task->simdata->mutex);
-
- if (t_simdata->comm
- && SIMIX_action_get_state(t_simdata->comm) == SURF_ACTION_DONE) {
- if (SIMIX_action_destroy(t_simdata->comm))
- t_simdata->comm = NULL;
- t_simdata->refcount--;
- MSG_RETURN(MSG_OK);
- } else if (SIMIX_host_get_state(local_host->simdata->smx_host) == 0) {
- if (t_simdata->comm && SIMIX_action_destroy(t_simdata->comm))
- t_simdata->comm = NULL;
- MSG_RETURN(MSG_HOST_FAILURE);
- } else {
- if (t_simdata->comm && SIMIX_action_destroy(t_simdata->comm))
- t_simdata->comm = NULL;
- MSG_RETURN(MSG_TRANSFER_FAILURE);
+ /* If the send failed, it is not used anymore */
+ t_simdata->isused = 0;
}
+
+ p_simdata->waiting_task = NULL;
+#ifdef HAVE_TRACING
+ if (call_end)
+ TRACE_msg_task_put_end();
+#endif
+ MSG_RETURN(ret);
}
