3 /* Copyright (c) 2008, 2009, 2010. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
9 #include "msg_mailbox.h"
10 #include "msg_private.h"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_mailbox, msg,
13 "Logging specific to MSG (mailbox)");
15 msg_mailbox_t MSG_mailbox_new(const char *alias)
17 return simcall_rdv_create(alias);
20 void MSG_mailbox_free(void *mailbox)
22 simcall_rdv_destroy((msg_mailbox_t)mailbox);
25 int MSG_mailbox_is_empty(msg_mailbox_t mailbox)
27 return (NULL == simcall_rdv_get_head(mailbox));
30 msg_task_t MSG_mailbox_get_head(msg_mailbox_t mailbox)
32 smx_action_t comm = simcall_rdv_get_head(mailbox);
37 return (msg_task_t) simcall_comm_get_src_data(comm);
41 MSG_mailbox_get_count_host_waiting_tasks(msg_mailbox_t mailbox,
44 return simcall_rdv_comm_count_by_host(mailbox, host);
47 double MSG_set_rate_before_read(msg_mailbox_t mailbox, double newrate) {
48 return simcall_comm_change_rate_first_action(mailbox,newrate);
51 msg_mailbox_t MSG_mailbox_get_by_alias(const char *alias)
54 msg_mailbox_t mailbox = simcall_rdv_get_by_name(alias);
57 mailbox = MSG_mailbox_new(alias);
62 /** \ingroup msg_mailbox_management
63 * \brief Set the mailbox to receive in asynchronous mode
65 * All messages sent to this mailbox will be transferred to
66 * the receiver without waiting for the receive call.
67 * The receive call will still be necessary to use the received data.
68 * If there is a need to receive some messages asynchronously, and some not,
69 * two different mailboxes should be used.
71 * \param alias The name of the mailbox
73 void MSG_mailbox_set_async(const char *alias){
74 msg_mailbox_t mailbox = MSG_mailbox_get_by_alias(alias);
76 simcall_rdv_set_receiver(mailbox, SIMIX_process_self());
77 XBT_VERB("%s mailbox set to receive eagerly for process %p\n",alias, SIMIX_process_self());
81 /** \ingroup msg_mailbox_management
82 * \brief Get a task from a mailbox on a given host
84 * \param mailbox The mailbox where the task was sent
85 * \param task a memory location for storing a #msg_task_t.
86 * \param host a #msg_host_t host from where the task was sent
87 * \param timeout a timeout
90 * #MSG_OK if the task was successfully received,
91 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE otherwise.
94 MSG_mailbox_get_task_ext(msg_mailbox_t mailbox, msg_task_t * task,
95 msg_host_t host, double timeout)
98 msg_error_t ret = MSG_OK;
99 /* We no longer support getting a task from a specific host */
104 TRACE_msg_task_get_start();
105 double start_time = MSG_get_clock();
109 xbt_assert(task, "Null pointer for the task storage");
113 ("Asked to write the received task in a non empty struct -- proceeding.");
115 /* Try to receive it by calling SIMIX network layer */
117 simcall_comm_recv(mailbox, task, NULL, NULL, NULL, timeout);
118 XBT_DEBUG("Got task %s from %p",(*task)->name,mailbox);
119 (*task)->simdata->isused=0;
122 switch (e.category) {
124 ret = MSG_HOST_FAILURE;
127 ret = MSG_TRANSFER_FAILURE;
139 if (ret != MSG_HOST_FAILURE &&
140 ret != MSG_TRANSFER_FAILURE &&
141 ret != MSG_TIMEOUT) {
142 TRACE_msg_task_get_end(start_time, *task);
150 /** \ingroup msg_mailbox_management
151 * \brief Get a task from a mailbox on a given host at a given rate
153 * \param mailbox The mailbox where the task was sent
154 * \param task a memory location for storing a #msg_task_t.
155 * \param host a #msg_host_t host from where the task was sent
156 * \param timeout a timeout
157 * \param rate a bandwidth rate
160 * #MSG_OK if the task was successfully received,
161 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE otherwise.
164 MSG_mailbox_get_task_ext_bounded(msg_mailbox_t mailbox, msg_task_t * task,
165 msg_host_t host, double timeout, double rate)
167 MSG_set_rate_before_read(mailbox,rate);
168 MSG_RETURN(MSG_mailbox_get_task_ext(mailbox,task,host,timeout));
173 MSG_mailbox_put_with_timeout(msg_mailbox_t mailbox, msg_task_t task,
177 msg_error_t ret = MSG_OK;
178 simdata_task_t t_simdata = NULL;
179 msg_process_t process = MSG_process_self();
180 simdata_process_t p_simdata = SIMIX_process_self_get_data(process);
183 int call_end = TRACE_msg_task_put_start(task); //must be after CHECK_HOST()
186 /* Prepare the task to send */
187 t_simdata = task->simdata;
188 t_simdata->sender = process;
189 t_simdata->source = ((simdata_process_t) SIMIX_process_self_get_data(process))->m_host;
191 xbt_assert(t_simdata->isused == 0,
192 "This task is still being used somewhere else. You cannot send it now. Go fix your code!");
195 t_simdata->comm = NULL;
196 msg_global->sent_msg++;
199 p_simdata->waiting_task = task;
201 /* Try to send it by calling SIMIX network layer */
203 smx_action_t comm = simcall_comm_isend(mailbox, t_simdata->message_size,
204 t_simdata->rate, task, sizeof(void *),
205 NULL, NULL, task, 0);
207 if (TRACE_is_enabled()) {
208 simcall_set_category(comm, task->category);
211 t_simdata->comm = comm;
212 simcall_comm_wait(comm, timeout);
216 switch (e.category) {
218 ret = MSG_HOST_FAILURE;
221 ret = MSG_TRANSFER_FAILURE;
231 /* If the send failed, it is not used anymore */
232 t_simdata->isused = 0;
236 p_simdata->waiting_task = NULL;
239 TRACE_msg_task_put_end();
244 #ifdef MSG_USE_DEPRECATED
245 msg_mailbox_t MSG_mailbox_get_by_channel(msg_host_t host,
248 XBT_WARN("DEPRECATED! Now use MSG_mailbox_get_by_alias");
249 xbt_assert((host != NULL), "Invalid host");
250 xbt_assert((channel >= 0)
251 && (channel < msg_global->max_channel), "Invalid channel %d",
254 return host->mailboxes[(size_t) channel];