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. */
10 #include "msg/private.h"
11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_mailbox, msg,
12 "Logging specific to MSG (mailbox)");
14 msg_mailbox_t MSG_mailbox_new(const char *alias)
16 return SIMIX_req_rdv_create(alias);
19 void MSG_mailbox_free(void *mailbox)
21 SIMIX_req_rdv_destroy((msg_mailbox_t)mailbox);
24 int MSG_mailbox_is_empty(msg_mailbox_t mailbox)
26 return (NULL == SIMIX_req_rdv_get_head(mailbox));
29 m_task_t MSG_mailbox_get_head(msg_mailbox_t mailbox)
31 smx_action_t comm = SIMIX_req_rdv_get_head(mailbox);
36 return (m_task_t) SIMIX_req_comm_get_src_data(comm);
40 MSG_mailbox_get_count_host_waiting_tasks(msg_mailbox_t mailbox,
43 return SIMIX_req_rdv_comm_count_by_host(mailbox,
44 host->simdata->smx_host);
47 msg_mailbox_t MSG_mailbox_get_by_alias(const char *alias)
50 msg_mailbox_t mailbox = SIMIX_req_rdv_get_by_name(alias);
53 mailbox = MSG_mailbox_new(alias);
58 msg_mailbox_t MSG_mailbox_get_by_channel(m_host_t host,
61 xbt_assert((host != NULL), "Invalid host");
62 xbt_assert((channel >= 0)
63 && (channel < msg_global->max_channel), "Invalid channel %d",
66 return host->simdata->mailboxes[(size_t) channel];
70 MSG_mailbox_get_task_ext(msg_mailbox_t mailbox, m_task_t * task,
71 m_host_t host, double timeout)
74 MSG_error_t ret = MSG_OK;
75 /* We no longer support getting a task from a specific host */
81 TRACE_msg_task_get_start();
82 double start_time = MSG_get_clock();
86 xbt_assert(task, "Null pointer for the task storage");
90 ("MSG_task_get() was asked to write in a non empty task struct.");
92 /* Try to receive it by calling SIMIX network layer */
94 SIMIX_req_comm_recv(mailbox, task, NULL, NULL, NULL, timeout);
95 XBT_DEBUG("Got task %s from %p",(*task)->name,mailbox);
96 (*task)->simdata->isused=0;
101 ret = MSG_HOST_FAILURE;
104 ret = MSG_TRANSFER_FAILURE;
116 if (ret != MSG_HOST_FAILURE &&
117 ret != MSG_TRANSFER_FAILURE &&
118 ret != MSG_TIMEOUT) {
119 TRACE_msg_task_get_end(start_time, *task);
126 MSG_mailbox_put_with_timeout(msg_mailbox_t mailbox, m_task_t task,
130 MSG_error_t ret = MSG_OK;
131 simdata_task_t t_simdata = NULL;
132 m_process_t process = MSG_process_self();
133 simdata_process_t p_simdata = SIMIX_process_self_get_data();
135 volatile smx_action_t comm = NULL;
141 call_end = TRACE_msg_task_put_start(task); //must be after CHECK_HOST()
144 /* Prepare the task to send */
145 t_simdata = task->simdata;
146 t_simdata->sender = process;
147 t_simdata->source = MSG_host_self();
149 xbt_assert(t_simdata->isused == 0,
150 "This task is still being used somewhere else. You cannot send it now. Go fix your code!");
153 msg_global->sent_msg++;
156 p_simdata->waiting_task = task;
158 /* Try to send it by calling SIMIX network layer */
161 if (TRACE_is_enabled()) {
162 comm = SIMIX_req_comm_isend(mailbox, t_simdata->message_size,
163 t_simdata->rate, task, sizeof(void *),
165 t_simdata->comm = comm;
166 SIMIX_req_set_category(comm, task->category);
167 SIMIX_req_comm_wait(comm, timeout);
170 SIMIX_req_comm_send(mailbox, t_simdata->message_size,
171 t_simdata->rate, task, sizeof(void*),
172 NULL, NULL, timeout);
179 switch (e.category) {
181 ret = MSG_HOST_FAILURE;
184 ret = MSG_TRANSFER_FAILURE;
194 /* If the send failed, it is not used anymore */
195 t_simdata->isused = 0;
198 p_simdata->waiting_task = NULL;
201 TRACE_msg_task_put_end();