+/** \ingroup msg_task_usage
+ * \brief Sends a task to a mailbox
+ *
+ * This is a blocking function, the execution flow will be blocked
+ * until the task is sent (and received in the other side if #MSG_task_receive is used).
+ * See #MSG_task_isend for sending tasks asynchronously.
+ *
+ * \param task the task to be sent
+ * \param alias the mailbox name to where the task is sent
+ *
+ * \return Returns #MSG_OK if the task was successfully sent,
+ * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE otherwise.
+ */
+MSG_error_t MSG_task_send(m_task_t task, const char *alias)
+{
+ XBT_DEBUG("MSG_task_send: Trying to send a message on mailbox '%s'", alias);
+ return MSG_task_send_with_timeout(task, alias, -1);
+}
+
+/** \ingroup msg_task_usage
+ * \brief Sends a task to a mailbox with a maximum rate
+ *
+ * This is a blocking function, the execution flow will be blocked
+ * until the task is sent. The maxrate parameter allows the application
+ * to limit the bandwidth utilization of network links when sending the task.
+ *
+ * \param task the task to be sent
+ * \param alias the mailbox name to where the task is sent
+ * \param maxrate the maximum communication rate for sending this task
+ *
+ * \return Returns #MSG_OK if the task was successfully sent,
+ * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE otherwise.
+ */
+MSG_error_t
+MSG_task_send_bounded(m_task_t task, const char *alias, double maxrate)
+{
+ task->simdata->rate = maxrate;
+ return MSG_task_send(task, alias);
+}
+
+/** \ingroup msg_task_usage
+ * \brief Sends a task to a mailbox with a timeout
+ *
+ * This is a blocking function, the execution flow will be blocked
+ * until the task is sent or the timeout is achieved.
+ *
+ * \param task the task to be sent
+ * \param alias the mailbox name to where the task is sent
+ * \param timeout is the maximum wait time for completion (if -1, this call is the same as #MSG_task_send)
+ *
+ * \return Returns #MSG_OK if the task was successfully sent,
+ * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE, or #MSG_TIMEOUT otherwise.
+ */
+MSG_error_t
+MSG_task_send_with_timeout(m_task_t task, const char *alias,
+ double timeout)
+{
+ return MSG_mailbox_put_with_timeout(MSG_mailbox_get_by_alias(alias),
+ task, timeout);
+}
+
+/** \ingroup msg_task_usage
+ * \brief Check if there is a communication going on in a mailbox.
+ *
+ * \param alias the name of the mailbox to be considered
+ *
+ * \return Returns 1 if there is a communication, 0 otherwise
+ */
+int MSG_task_listen(const char *alias)
+{
+ return !MSG_mailbox_is_empty(MSG_mailbox_get_by_alias(alias));
+}
+
+/** \ingroup msg_task_usage
+ * \brief Check the number of communication actions of a given host pending in a mailbox.
+ *
+ * \param alias the name of the mailbox to be considered
+ * \param host the host to check for communication
+ *
+ * \return Returns the number of pending communication actions of the host in the
+ * given mailbox, 0 if there is no pending communication actions.
+ *
+ */
+int MSG_task_listen_from_host(const char *alias, m_host_t host)
+{
+ return
+ MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_alias
+ (alias), host);
+}
+
+/** \ingroup msg_task_usage
+ * \brief Look if there is a communication on a mailbox and return the
+ * PID of the sender process.
+ *
+ * \param alias the name of the mailbox to be considered
+ *
+ * \return Returns the PID of sender process,
+ * -1 if there is no communication in the mailbox.
+ */
+int MSG_task_listen_from(const char *alias)
+{
+ m_task_t task;
+
+ if (NULL ==
+ (task = MSG_mailbox_get_head(MSG_mailbox_get_by_alias(alias))))
+ return -1;
+
+ return MSG_process_get_PID(task->simdata->sender);
+}
+
+/** \ingroup msg_task_usage
+ * \brief Sets the tracing category of a task.
+ *
+ * This function should be called after the creation of
+ * a MSG task, to define the category of that task. The
+ * first parameter task must contain a task that was
+ * created with the function #MSG_task_create. The second
+ * parameter category must contain a category that was
+ * previously declared with the function #TRACE_category
+ * (or with #TRACE_category_with_color).
+ *
+ * See \ref tracing_tracing for details on how to trace
+ * the (categorized) resource utilization.
+ *
+ * \param task the task that is going to be categorized
+ * \param category the name of the category to be associated to the task
+ *
+ * \see MSG_task_get_category, TRACE_category, TRACE_category_with_color
+ */
+void MSG_task_set_category (m_task_t task, const char *category)
+{
+#ifdef HAVE_TRACING
+ TRACE_msg_set_task_category (task, category);
+#endif
+}
+
+/** \ingroup msg_task_usage
+ *
+ * \brief Gets the current tracing category of a task.
+ *
+ * \param task the task to be considered
+ *
+ * \see MSG_task_set_category
+ *
+ * \return Returns the name of the tracing category of the given task, NULL otherwise
+ */
+const char *MSG_task_get_category (m_task_t task)
+{
+#ifdef HAVE_TRACING
+ return task->category;
+#else
+ return NULL;
+#endif
+}
+
+#ifdef MSG_USE_DEPRECATED
+/** \ingroup msg_deprecated_functions
+ *
+ * \brief Return the last value returned by a MSG function (except
+ * MSG_get_errno...).
+ */
+MSG_error_t MSG_get_errno(void)
+{
+ return PROCESS_GET_ERRNO();
+}
+
+/** \ingroup msg_deprecated_functions