1 /* Copyright (c) 2004-2012. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "msg_private.h"
7 #include "msg_mailbox.h"
10 #include "xbt/sysdep.h"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_gos, msg,
13 "Logging specific to MSG (gos)");
15 /** \ingroup msg_task_usage
16 * \brief Executes a task and waits for its termination.
18 * This function is used for describing the behavior of a process. It
19 * takes only one parameter.
20 * \param task a #msg_task_t to execute on the location on which the process is running.
21 * \return #MSG_OK if the task was successfully completed, #MSG_TASK_CANCELED
22 * or #MSG_HOST_FAILURE otherwise
24 msg_error_t MSG_task_execute(msg_task_t task)
26 return MSG_parallel_task_execute(task);
29 /** \ingroup msg_task_usage
30 * \brief Executes a parallel task and waits for its termination.
32 * \param task a #msg_task_t to execute on the location on which the process is running.
34 * \return #MSG_OK if the task was successfully completed, #MSG_TASK_CANCELED
35 * or #MSG_HOST_FAILURE otherwise
37 msg_error_t MSG_parallel_task_execute(msg_task_t task)
40 simdata_task_t simdata = task->simdata;
41 msg_process_t self = SIMIX_process_self();
42 simdata_process_t p_simdata = SIMIX_process_self_get_data(self);
43 e_smx_state_t comp_state;
44 msg_error_t status = MSG_OK;
47 TRACE_msg_task_execute_start(task);
50 xbt_assert((!simdata->compute) && (task->simdata->isused == 0),
51 "This task is executed somewhere else. Go fix your code! %d",
52 task->simdata->isused);
54 XBT_DEBUG("Computing on %s", MSG_process_get_name(MSG_process_self()));
56 if (simdata->computation_amount == 0 && !simdata->host_nb) {
58 TRACE_msg_task_execute_end(task);
68 if (simdata->host_nb > 0) {
69 simdata->compute = simcall_host_parallel_execute(task->name,
75 XBT_DEBUG("Parallel execution action created: %p", simdata->compute);
77 simdata->compute = simcall_host_execute(task->name,
78 p_simdata->m_host->smx_host,
79 simdata->computation_amount,
84 simcall_set_category(simdata->compute, task->category);
86 p_simdata->waiting_action = simdata->compute;
87 comp_state = simcall_host_execution_wait(simdata->compute);
89 p_simdata->waiting_action = NULL;
93 XBT_DEBUG("Execution task '%s' finished in state %d",
94 task->name, (int)comp_state);
99 status = MSG_TASK_CANCELED;
106 /* action ended, set comm and compute = NULL, the actions is already destroyed
107 * in the main function */
108 simdata->computation_amount = 0.0;
109 simdata->comm = NULL;
110 simdata->compute = NULL;
112 TRACE_msg_task_execute_end(task);
119 /** \ingroup msg_task_usage
120 * \brief Sleep for the specified number of seconds
122 * Makes the current process sleep until \a time seconds have elapsed.
124 * \param nb_sec a number of second
126 msg_error_t MSG_process_sleep(double nb_sec)
128 msg_error_t status = MSG_OK;
129 /*msg_process_t proc = MSG_process_self();*/
132 TRACE_msg_process_sleep_in(MSG_process_self());
135 /* create action to sleep */
137 /*proc->simdata->waiting_action = act_sleep;
139 FIXME: check if not setting the waiting_action breaks something on msg
141 proc->simdata->waiting_action = NULL;*/
143 simcall_process_sleep(nb_sec);
146 TRACE_msg_process_sleep_out(MSG_process_self());
151 /** \ingroup msg_task_usage
152 * \brief Deprecated function that used to receive a task from a mailbox from a specific host.
154 * Sorry, this function is not supported anymore. That wouldn't be
155 * impossible to reimplement it, but we are lacking the time to do so ourselves.
156 * If you need this functionality, you can either:
158 * - implement the buffering mechanism on the user-level by queuing all messages
159 * received in the mailbox that do not match your expectation
160 * - change your application logic to leverage the mailboxes features. For example,
161 * if you have A receiving messages from B and C, you could have A waiting on
162 * mailbox "A" most of the time, but on "A#B" when it's waiting for specific
163 * messages from B and "A#C" when waiting for messages from C. You could even get A
164 * sometime waiting on all these mailboxes using @ref MSG_comm_waitany. You can find
165 * an example of use of this function in the @ref MSG_examples section.
166 * - Provide a proper patch to implement this functionality back in MSG. That wouldn't be
167 * very difficult actually. Check the function @ref MSG_mailbox_get_task_ext. During its call to
168 * simcall_comm_recv(), the 5th argument, match_fun, is NULL. Create a function that filters
169 * messages according to the host (that you will pass as sixth argument to simcall_comm_recv()
170 * and that your filtering function will receive as first parameter, and then, the filter could
171 * simply compare the host names, for example. After sufficient testing, provide an example that
172 * we could add to the distribution, and your first contribution to SimGrid is ready. Thanks in advance.
174 * \param task a memory location for storing a #msg_task_t.
175 * \param alias name of the mailbox to receive the task from
176 * \param host a #msg_host_t host from where the task was sent
179 * #MSG_OK if the task was successfully received,
180 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE otherwise.
183 MSG_task_receive_from_host(msg_task_t * task, const char *alias,
186 return MSG_task_receive_ext(task, alias, -1, host);
189 /** \ingroup msg_task_usage
190 * \brief Receives a task from a mailbox.
192 * This is a blocking function, the execution flow will be blocked
193 * until the task is received. See #MSG_task_irecv
194 * for receiving tasks asynchronously.
196 * \param task a memory location for storing a #msg_task_t.
197 * \param alias name of the mailbox to receive the task from
200 * #MSG_OK if the task was successfully received,
201 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE otherwise.
203 msg_error_t MSG_task_receive(msg_task_t * task, const char *alias)
205 return MSG_task_receive_with_timeout(task, alias, -1);
208 /** \ingroup msg_task_usage
209 * \brief Receives a task from a mailbox with a given timeout.
211 * This is a blocking function with a timeout, the execution flow will be blocked
212 * until the task is received or the timeout is achieved. See #MSG_task_irecv
213 * for receiving tasks asynchronously. You can provide a -1 timeout
214 * to obtain an infinite timeout.
216 * \param task a memory location for storing a #msg_task_t.
217 * \param alias name of the mailbox to receive the task from
218 * \param timeout is the maximum wait time for completion (if -1, this call is the same as #MSG_task_receive)
221 * #MSG_OK if the task was successfully received,
222 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE, or #MSG_TIMEOUT otherwise.
225 MSG_task_receive_with_timeout(msg_task_t * task, const char *alias,
228 return MSG_task_receive_ext(task, alias, timeout, NULL);
231 /** \ingroup msg_task_usage
232 * \brief Receives a task from a mailbox from a specific host with a given timeout.
234 * This is a blocking function with a timeout, the execution flow will be blocked
235 * until the task is received or the timeout is achieved. See #MSG_task_irecv
236 * for receiving tasks asynchronously. You can provide a -1 timeout
237 * to obtain an infinite timeout.
239 * \param task a memory location for storing a #msg_task_t.
240 * \param alias name of the mailbox to receive the task from
241 * \param timeout is the maximum wait time for completion (provide -1 for no timeout)
242 * \param host a #msg_host_t host from where the task was sent
245 * #MSG_OK if the task was successfully received,
246 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE, or #MSG_TIMEOUT otherwise.
249 MSG_task_receive_ext(msg_task_t * task, const char *alias, double timeout,
253 ("MSG_task_receive_ext: Trying to receive a message on mailbox '%s'",
255 return MSG_mailbox_get_task_ext(MSG_mailbox_get_by_alias(alias), task,
259 /** \ingroup msg_task_usage
260 * \brief Sends a task on a mailbox.
262 * This is a non blocking function: use MSG_comm_wait() or MSG_comm_test()
263 * to end the communication.
265 * \param task a #msg_task_t to send on another location.
266 * \param alias name of the mailbox to sent the task to
267 * \return the msg_comm_t communication created
269 msg_comm_t MSG_task_isend(msg_task_t task, const char *alias)
271 return MSG_task_isend_with_matching(task,alias,NULL,NULL);
274 /** \ingroup msg_task_usage
275 * \brief Sends a task on a mailbox, with support for matching requests
277 * This is a non blocking function: use MSG_comm_wait() or MSG_comm_test()
278 * to end the communication.
280 * \param task a #msg_task_t to send on another location.
281 * \param alias name of the mailbox to sent the task to
282 * \param match_fun boolean function which parameters are:
283 * - match_data_provided_here
284 * - match_data_provided_by_other_side_if_any
285 * - the_smx_action_describing_the_other_side
286 * \param match_data user provided data passed to match_fun
287 * \return the msg_comm_t communication created
289 XBT_INLINE msg_comm_t MSG_task_isend_with_matching(msg_task_t task, const char *alias,
290 int (*match_fun)(void*,void*, smx_action_t),
293 simdata_task_t t_simdata = NULL;
294 msg_process_t process = MSG_process_self();
295 msg_mailbox_t mailbox = MSG_mailbox_get_by_alias(alias);
298 int call_end = TRACE_msg_task_put_start(task);
301 /* Prepare the task to send */
302 t_simdata = task->simdata;
303 t_simdata->sender = process;
304 t_simdata->source = ((simdata_process_t) SIMIX_process_self_get_data(process))->m_host;
306 xbt_assert(t_simdata->isused == 0,
307 "This task is still being used somewhere else. You cannot send it now. Go fix your code!");
309 t_simdata->isused = 1;
310 t_simdata->comm = NULL;
311 msg_global->sent_msg++;
313 /* Send it by calling SIMIX network layer */
314 msg_comm_t comm = xbt_new0(s_msg_comm_t, 1);
315 comm->task_sent = task;
316 comm->task_received = NULL;
317 comm->status = MSG_OK;
319 simcall_comm_isend(mailbox, t_simdata->message_size,
320 t_simdata->rate, task, sizeof(void *), match_fun, NULL, match_data, 0);
321 t_simdata->comm = comm->s_comm; /* FIXME: is the field t_simdata->comm still useful? */
323 if (TRACE_is_enabled()) {
324 simcall_set_category(comm->s_comm, task->category);
330 TRACE_msg_task_put_end();
336 /** \ingroup msg_task_usage
337 * \brief Sends a task on a mailbox.
339 * This is a non blocking detached send function.
340 * Think of it as a best effort send. Keep in mind that the third parameter
341 * is only called if the communication fails. If the communication does work,
342 * it is responsibility of the receiver code to free anything related to
343 * the task, as usual. More details on this can be obtained on
344 * <a href="http://lists.gforge.inria.fr/pipermail/simgrid-user/2011-November/002649.html">this thread</a>
345 * in the SimGrid-user mailing list archive.
347 * \param task a #msg_task_t to send on another location.
348 * \param alias name of the mailbox to sent the task to
349 * \param cleanup a function to destroy the task if the
350 * communication fails, e.g. MSG_task_destroy
351 * (if NULL, no function will be called)
353 void MSG_task_dsend(msg_task_t task, const char *alias, void_f_pvoid_t cleanup)
355 simdata_task_t t_simdata = NULL;
356 msg_process_t process = MSG_process_self();
357 msg_mailbox_t mailbox = MSG_mailbox_get_by_alias(alias);
359 /* Prepare the task to send */
360 t_simdata = task->simdata;
361 t_simdata->sender = process;
362 t_simdata->source = ((simdata_process_t) SIMIX_process_self_get_data(process))->m_host;
364 xbt_assert(t_simdata->isused == 0,
365 "This task is still being used somewhere else. You cannot send it now. Go fix your code!");
367 t_simdata->isused = 1;
368 t_simdata->comm = NULL;
369 msg_global->sent_msg++;
372 int call_end = TRACE_msg_task_put_start(task);
375 /* Send it by calling SIMIX network layer */
376 smx_action_t comm = simcall_comm_isend(mailbox, t_simdata->message_size,
377 t_simdata->rate, task, sizeof(void *), NULL, cleanup, NULL, 1);
378 t_simdata->comm = comm;
380 if (TRACE_is_enabled()) {
381 simcall_set_category(comm, task->category);
387 TRACE_msg_task_put_end();
391 /** \ingroup msg_task_usage
392 * \brief Starts listening for receiving a task from an asynchronous communication.
394 * This is a non blocking function: use MSG_comm_wait() or MSG_comm_test()
395 * to end the communication.
397 * \param task a memory location for storing a #msg_task_t. has to be valid until the end of the communication.
398 * \param name of the mailbox to receive the task on
399 * \return the msg_comm_t communication created
401 msg_comm_t MSG_task_irecv(msg_task_t *task, const char *name)
403 smx_rdv_t rdv = MSG_mailbox_get_by_alias(name);
405 /* FIXME: these functions are not traceable */
408 xbt_assert(task, "Null pointer for the task storage");
412 ("MSG_task_irecv() was asked to write in a non empty task struct.");
414 /* Try to receive it by calling SIMIX network layer */
415 msg_comm_t comm = xbt_new0(s_msg_comm_t, 1);
416 comm->task_sent = NULL;
417 comm->task_received = task;
418 comm->status = MSG_OK;
419 comm->s_comm = simcall_comm_irecv(rdv, task, NULL, NULL, NULL);
424 /** \ingroup msg_task_usage
425 * \brief Checks whether a communication is done, and if yes, finalizes it.
426 * \param comm the communication to test
427 * \return TRUE if the communication is finished
428 * (but it may have failed, use MSG_comm_get_status() to know its status)
429 * or FALSE if the communication is not finished yet
430 * If the status is FALSE, don't forget to use MSG_process_sleep() after the test.
432 int MSG_comm_test(msg_comm_t comm)
437 /* Ignore some variables from xbt/ex.h used by exception e for stacks comparison */
439 MC_ignore_stack("e", "MSG_comm_test");
440 MC_ignore_stack("__ex_cleanup", "MSG_comm_test");
441 MC_ignore_stack("__ex_mctx_me", "MSG_comm_test");
445 finished = simcall_comm_test(comm->s_comm);
447 if (finished && comm->task_received != NULL) {
448 /* I am the receiver */
449 (*comm->task_received)->simdata->isused = 0;
453 switch (e.category) {
455 comm->status = MSG_TRANSFER_FAILURE;
460 comm->status = MSG_TIMEOUT;
473 /** \ingroup msg_task_usage
474 * \brief This function checks if a communication is finished.
475 * \param comms a vector of communications
476 * \return the position of the finished communication if any
477 * (but it may have failed, use MSG_comm_get_status() to know its status),
478 * or -1 if none is finished
480 int MSG_comm_testany(xbt_dynar_t comms)
483 int finished_index = -1;
485 /* create the equivalent dynar with SIMIX objects */
486 xbt_dynar_t s_comms = xbt_dynar_new(sizeof(smx_action_t), NULL);
489 xbt_dynar_foreach(comms, cursor, comm) {
490 xbt_dynar_push(s_comms, &comm->s_comm);
493 msg_error_t status = MSG_OK;
495 finished_index = simcall_comm_testany(s_comms);
498 switch (e.category) {
500 finished_index = e.value;
501 status = MSG_TRANSFER_FAILURE;
505 finished_index = e.value;
506 status = MSG_TIMEOUT;
514 xbt_dynar_free(&s_comms);
516 if (finished_index != -1) {
517 comm = xbt_dynar_get_as(comms, finished_index, msg_comm_t);
518 /* the communication is finished */
519 comm->status = status;
521 if (status == MSG_OK && comm->task_received != NULL) {
522 /* I am the receiver */
523 (*comm->task_received)->simdata->isused = 0;
527 return finished_index;
530 /** \ingroup msg_task_usage
531 * \brief Destroys a communication.
532 * \param comm the communication to destroy.
534 void MSG_comm_destroy(msg_comm_t comm)
539 /** \ingroup msg_task_usage
540 * \brief Wait for the completion of a communication.
542 * It takes two parameters.
543 * \param comm the communication to wait.
544 * \param timeout Wait until the communication terminates or the timeout
545 * occurs. You can provide a -1 timeout to obtain an infinite timeout.
546 * \return msg_error_t
548 msg_error_t MSG_comm_wait(msg_comm_t comm, double timeout)
552 simcall_comm_wait(comm->s_comm, timeout);
554 if (comm->task_received != NULL) {
555 /* I am the receiver */
556 (*comm->task_received)->simdata->isused = 0;
559 /* FIXME: these functions are not traceable */
562 switch (e.category) {
564 comm->status = MSG_TRANSFER_FAILURE;
567 comm->status = MSG_TIMEOUT;
578 /** \ingroup msg_task_usage
579 * \brief This function is called by a sender and permit to wait for each communication
581 * \param comm a vector of communication
582 * \param nb_elem is the size of the comm vector
583 * \param timeout for each call of MSG_comm_wait
585 void MSG_comm_waitall(msg_comm_t * comm, int nb_elem, double timeout)
588 for (i = 0; i < nb_elem; i++) {
589 MSG_comm_wait(comm[i], timeout);
593 /** \ingroup msg_task_usage
594 * \brief This function waits for the first communication finished in a list.
595 * \param comms a vector of communications
596 * \return the position of the first finished communication
597 * (but it may have failed, use MSG_comm_get_status() to know its status)
599 int MSG_comm_waitany(xbt_dynar_t comms)
602 int finished_index = -1;
604 /* create the equivalent dynar with SIMIX objects */
605 xbt_dynar_t s_comms = xbt_dynar_new(sizeof(smx_action_t), NULL);
608 xbt_dynar_foreach(comms, cursor, comm) {
609 xbt_dynar_push(s_comms, &comm->s_comm);
612 msg_error_t status = MSG_OK;
614 finished_index = simcall_comm_waitany(s_comms);
617 switch (e.category) {
619 finished_index = e.value;
620 status = MSG_TRANSFER_FAILURE;
624 finished_index = e.value;
625 status = MSG_TIMEOUT;
634 xbt_assert(finished_index != -1, "WaitAny returned -1");
635 xbt_dynar_free(&s_comms);
637 comm = xbt_dynar_get_as(comms, finished_index, msg_comm_t);
638 /* the communication is finished */
639 comm->status = status;
641 if (comm->task_received != NULL) {
642 /* I am the receiver */
643 (*comm->task_received)->simdata->isused = 0;
646 return finished_index;
650 * \ingroup msg_task_usage
651 * \brief Returns the error (if any) that occured during a finished communication.
652 * \param comm a finished communication
653 * \return the status of the communication, or #MSG_OK if no error occured
654 * during the communication
656 msg_error_t MSG_comm_get_status(msg_comm_t comm) {
661 /** \ingroup msg_task_usage
662 * \brief Get a task (#msg_task_t) from a communication
664 * \param comm the communication where to get the task
665 * \return the task from the communication
667 msg_task_t MSG_comm_get_task(msg_comm_t comm)
669 xbt_assert(comm, "Invalid parameter");
671 return comm->task_received ? *comm->task_received : comm->task_sent;
675 * \brief This function is called by SIMIX in kernel mode to copy the data of a comm.
676 * \param comm the comm
677 * \param buff the data copied
678 * \param buff_size size of the buffer
680 void MSG_comm_copy_data_from_SIMIX(smx_action_t comm, void* buff, size_t buff_size) {
683 SIMIX_comm_copy_pointer_callback(comm, buff, buff_size);
685 // notify the user callback if any
686 if (msg_global->task_copy_callback) {
687 msg_task_t task = buff;
688 msg_global->task_copy_callback(task,
689 simcall_comm_get_src_proc(comm), simcall_comm_get_dst_proc(comm));
693 /** \ingroup msg_task_usage
694 * \brief Sends a task to a mailbox
696 * This is a blocking function, the execution flow will be blocked
697 * until the task is sent (and received in the other side if #MSG_task_receive is used).
698 * See #MSG_task_isend for sending tasks asynchronously.
700 * \param task the task to be sent
701 * \param alias the mailbox name to where the task is sent
703 * \return Returns #MSG_OK if the task was successfully sent,
704 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE otherwise.
706 msg_error_t MSG_task_send(msg_task_t task, const char *alias)
708 XBT_DEBUG("MSG_task_send: Trying to send a message on mailbox '%s'", alias);
709 return MSG_task_send_with_timeout(task, alias, -1);
712 /** \ingroup msg_task_usage
713 * \brief Sends a task to a mailbox with a maximum rate
715 * This is a blocking function, the execution flow will be blocked
716 * until the task is sent. The maxrate parameter allows the application
717 * to limit the bandwidth utilization of network links when sending the task.
719 * \param task the task to be sent
720 * \param alias the mailbox name to where the task is sent
721 * \param maxrate the maximum communication rate for sending this task
723 * \return Returns #MSG_OK if the task was successfully sent,
724 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE otherwise.
727 MSG_task_send_bounded(msg_task_t task, const char *alias, double maxrate)
729 task->simdata->rate = maxrate;
730 return MSG_task_send(task, alias);
733 /** \ingroup msg_task_usage
734 * \brief Sends a task to a mailbox with a timeout
736 * This is a blocking function, the execution flow will be blocked
737 * until the task is sent or the timeout is achieved.
739 * \param task the task to be sent
740 * \param alias the mailbox name to where the task is sent
741 * \param timeout is the maximum wait time for completion (if -1, this call is the same as #MSG_task_send)
743 * \return Returns #MSG_OK if the task was successfully sent,
744 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE, or #MSG_TIMEOUT otherwise.
747 MSG_task_send_with_timeout(msg_task_t task, const char *alias,
750 return MSG_mailbox_put_with_timeout(MSG_mailbox_get_by_alias(alias),
754 /** \ingroup msg_task_usage
755 * \brief Check if there is a communication going on in a mailbox.
757 * \param alias the name of the mailbox to be considered
759 * \return Returns 1 if there is a communication, 0 otherwise
761 int MSG_task_listen(const char *alias)
763 return !MSG_mailbox_is_empty(MSG_mailbox_get_by_alias(alias));
766 /** \ingroup msg_task_usage
767 * \brief Check the number of communication actions of a given host pending in a mailbox.
769 * \param alias the name of the mailbox to be considered
770 * \param host the host to check for communication
772 * \return Returns the number of pending communication actions of the host in the
773 * given mailbox, 0 if there is no pending communication actions.
776 int MSG_task_listen_from_host(const char *alias, msg_host_t host)
779 MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_alias
783 /** \ingroup msg_task_usage
784 * \brief Look if there is a communication on a mailbox and return the
785 * PID of the sender process.
787 * \param alias the name of the mailbox to be considered
789 * \return Returns the PID of sender process,
790 * -1 if there is no communication in the mailbox.
792 int MSG_task_listen_from(const char *alias)
797 (task = MSG_mailbox_get_head(MSG_mailbox_get_by_alias(alias))))
800 return MSG_process_get_PID(task->simdata->sender);
803 /** \ingroup msg_task_usage
804 * \brief Sets the tracing category of a task.
806 * This function should be called after the creation of
807 * a MSG task, to define the category of that task. The
808 * first parameter task must contain a task that was
809 * created with the function #MSG_task_create. The second
810 * parameter category must contain a category that was
811 * previously declared with the function #TRACE_category
812 * (or with #TRACE_category_with_color).
814 * See \ref tracing for details on how to trace
815 * the (categorized) resource utilization.
817 * \param task the task that is going to be categorized
818 * \param category the name of the category to be associated to the task
820 * \see MSG_task_get_category, TRACE_category, TRACE_category_with_color
822 void MSG_task_set_category (msg_task_t task, const char *category)
825 TRACE_msg_set_task_category (task, category);
829 /** \ingroup msg_task_usage
831 * \brief Gets the current tracing category of a task.
833 * \param task the task to be considered
835 * \see MSG_task_set_category
837 * \return Returns the name of the tracing category of the given task, NULL otherwise
839 const char *MSG_task_get_category (msg_task_t task)
842 return task->category;
849 * \brief Returns the value of a given AS or router property
851 * \param asr the name of a router or AS
852 * \param name a property name
853 * \return value of a property (or NULL if property not set)
855 const char *MSG_as_router_get_property_value(const char* asr, const char *name)
857 return xbt_dict_get_or_null(MSG_as_router_get_properties(asr), name);
861 * \brief Returns a xbt_dict_t consisting of the list of properties assigned to
864 * \param asr the name of a router or AS
865 * \return a dict containing the properties
867 xbt_dict_t MSG_as_router_get_properties(const char* asr)
869 return (simcall_asr_get_properties(asr));
873 * \brief Change the value of a given AS or router
875 * \param asr the name of a router or AS
876 * \param name a property name
877 * \param value what to change the property to
878 * \param free_ctn the freeing function to use to kill the value on need
880 void MSG_as_router_set_property_value(const char* asr, const char *name, char *value,void_f_pvoid_t free_ctn) {
881 xbt_dict_set(MSG_as_router_get_properties(asr), name, value,free_ctn);
884 #ifdef MSG_USE_DEPRECATED
885 /** \ingroup msg_deprecated_functions
887 * \brief Return the last value returned by a MSG function (except
890 msg_error_t MSG_get_errno(void)
892 return PROCESS_GET_ERRNO();
895 /** \ingroup msg_deprecated_functions
896 * \brief Put a task on a channel of an host and waits for the end of the
899 * This function is used for describing the behavior of a process. It
900 * takes three parameter.
901 * \param task a #msg_task_t to send on another location. This task
902 will not be usable anymore when the function will return. There is
903 no automatic task duplication and you have to save your parameters
904 before calling this function. Tasks are unique and once it has been
905 sent to another location, you should not access it anymore. You do
906 not need to call MSG_task_destroy() but to avoid using, as an
907 effect of inattention, this task anymore, you definitely should
908 renitialize it with #MSG_TASK_UNINITIALIZED. Note that this task
909 can be transfered iff it has been correctly created with
911 * \param dest the destination of the message
912 * \param channel the channel on which the process should put this
913 task. This value has to be >=0 and < than the maximal number of
914 channels fixed with MSG_set_channel_number().
915 * \return #MSG_HOST_FAILURE if the host on which
916 * this function was called was shut down,
917 * #MSG_TRANSFER_FAILURE if the transfer could not be properly done
918 * (network failure, dest failure) or #MSG_OK if it succeeded.
920 msg_error_t MSG_task_put(msg_task_t task, msg_host_t dest, m_channel_t channel)
922 XBT_WARN("DEPRECATED! Now use MSG_task_send");
923 return MSG_task_put_with_timeout(task, dest, channel, -1.0);
926 /** \ingroup msg_deprecated_functions
927 * \brief Does exactly the same as MSG_task_put but with a bounded transmition
933 MSG_task_put_bounded(msg_task_t task, msg_host_t dest, m_channel_t channel,
936 XBT_WARN("DEPRECATED! Now use MSG_task_send_bounded");
937 task->simdata->rate = maxrate;
938 return MSG_task_put(task, dest, channel);
941 /** \ingroup msg_deprecated_functions
943 * \brief Put a task on a channel of an
944 * host (with a timeout on the waiting of the destination host) and
945 * waits for the end of the transmission.
947 * This function is used for describing the behavior of a process. It
948 * takes four parameter.
949 * \param task a #msg_task_t to send on another location. This task
950 will not be usable anymore when the function will return. There is
951 no automatic task duplication and you have to save your parameters
952 before calling this function. Tasks are unique and once it has been
953 sent to another location, you should not access it anymore. You do
954 not need to call MSG_task_destroy() but to avoid using, as an
955 effect of inattention, this task anymore, you definitely should
956 renitialize it with #MSG_TASK_UNINITIALIZED. Note that this task
957 can be transfered iff it has been correctly created with
959 * \param dest the destination of the message
960 * \param channel the channel on which the process should put this
961 task. This value has to be >=0 and < than the maximal number of
962 channels fixed with MSG_set_channel_number().
963 * \param timeout the maximum time to wait for a task before giving
964 up. In such a case, #MSG_TRANSFER_FAILURE will be returned, \a task
966 * \return #MSG_HOST_FAILURE if the host on which
967 this function was called was shut down,
968 #MSG_TRANSFER_FAILURE if the transfer could not be properly done
969 (network failure, dest failure, timeout...) or #MSG_OK if the communication succeeded.
972 MSG_task_put_with_timeout(msg_task_t task, msg_host_t dest,
973 m_channel_t channel, double timeout)
975 XBT_WARN("DEPRECATED! Now use MSG_task_send_with_timeout");
976 xbt_assert((channel >= 0)
977 && (channel < msg_global->max_channel), "Invalid channel %d",
980 XBT_DEBUG("MSG_task_put_with_timout: Trying to send a task to '%s'", SIMIX_host_get_name(dest->smx_host));
982 MSG_mailbox_put_with_timeout(MSG_mailbox_get_by_channel
983 (dest, channel), task, timeout);
986 /** \ingroup msg_deprecated_functions
987 * \brief Test whether there is a pending communication on a channel, and who sent it.
989 * It takes one parameter.
990 * \param channel the channel on which the process should be
991 listening. This value has to be >=0 and < than the maximal
992 number of channels fixed with MSG_set_channel_number().
993 * \return -1 if there is no pending communication and the PID of the process who sent it otherwise
995 int MSG_task_probe_from(m_channel_t channel)
997 XBT_WARN("DEPRECATED! Now use MSG_task_listen_from");
1000 xbt_assert((channel >= 0)
1001 && (channel < msg_global->max_channel), "Invalid channel %d",
1006 MSG_mailbox_get_head(MSG_mailbox_get_by_channel
1007 (MSG_host_self(), channel))))
1010 return MSG_process_get_PID(task->simdata->sender);
1013 /** \ingroup msg_deprecated_functions
1014 * \brief Test whether there is a pending communication on a channel.
1016 * It takes one parameter.
1017 * \param channel the channel on which the process should be
1018 listening. This value has to be >=0 and < than the maximal
1019 number of channels fixed with MSG_set_channel_number().
1020 * \return 1 if there is a pending communication and 0 otherwise
1022 int MSG_task_Iprobe(m_channel_t channel)
1024 XBT_WARN("DEPRECATED!");
1025 xbt_assert((channel >= 0)
1026 && (channel < msg_global->max_channel), "Invalid channel %d",
1030 !MSG_mailbox_is_empty(MSG_mailbox_get_by_channel
1031 (MSG_host_self(), channel));
1034 /** \ingroup msg_deprecated_functions
1036 * \brief Return the number of tasks waiting to be received on a \a
1037 channel and sent by \a host.
1039 * It takes two parameters.
1040 * \param channel the channel on which the process should be
1041 listening. This value has to be >=0 and < than the maximal
1042 number of channels fixed with MSG_set_channel_number().
1043 * \param host the host that is to be watched.
1044 * \return the number of tasks waiting to be received on \a channel
1045 and sent by \a host.
1047 int MSG_task_probe_from_host(int channel, msg_host_t host)
1049 XBT_WARN("DEPRECATED! Now use MSG_task_listen_from_host");
1050 xbt_assert((channel >= 0)
1051 && (channel < msg_global->max_channel), "Invalid channel %d",
1055 MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_channel
1056 (MSG_host_self(), channel),
1061 /** \ingroup msg_deprecated_functions
1062 * \brief Listen on \a channel and waits for receiving a task from \a host.
1064 * It takes three parameters.
1065 * \param task a memory location for storing a #msg_task_t. It will
1066 hold a task when this function will return. Thus \a task should not
1067 be equal to \c NULL and \a *task should be equal to \c NULL. If one of
1068 those two condition does not hold, there will be a warning message.
1069 * \param channel the channel on which the process should be
1070 listening. This value has to be >=0 and < than the maximal
1071 number of channels fixed with MSG_set_channel_number().
1072 * \param host the host that is to be watched.
1073 * \return a #msg_error_t indicating whether the operation was successful (#MSG_OK), or why it failed otherwise.
1076 MSG_task_get_from_host(msg_task_t * task, m_channel_t channel, msg_host_t host)
1078 XBT_WARN("DEPRECATED! Now use MSG_task_receive_from_host");
1079 return MSG_task_get_ext(task, channel, -1, host);
1082 /** \ingroup msg_deprecated_functions
1083 * \brief Listen on a channel and wait for receiving a task.
1085 * It takes two parameters.
1086 * \param task a memory location for storing a #msg_task_t. It will
1087 hold a task when this function will return. Thus \a task should not
1088 be equal to \c NULL and \a *task should be equal to \c NULL. If one of
1089 those two condition does not hold, there will be a warning message.
1090 * \param channel the channel on which the process should be
1091 listening. This value has to be >=0 and < than the maximal
1092 number of channels fixed with MSG_set_channel_number().
1093 * \return a #msg_error_t indicating whether the operation was successful (#MSG_OK), or why it failed otherwise.
1095 msg_error_t MSG_task_get(msg_task_t * task, m_channel_t channel)
1097 XBT_WARN("DEPRECATED! Now use MSG_task_receive");
1098 return MSG_task_get_with_timeout(task, channel, -1);
1101 /** \ingroup msg_deprecated_functions
1102 * \brief Listen on a channel and wait for receiving a task with a timeout.
1104 * It takes three parameters.
1105 * \param task a memory location for storing a #msg_task_t. It will
1106 hold a task when this function will return. Thus \a task should not
1107 be equal to \c NULL and \a *task should be equal to \c NULL. If one of
1108 those two condition does not hold, there will be a warning message.
1109 * \param channel the channel on which the process should be
1110 listening. This value has to be >=0 and < than the maximal
1111 number of channels fixed with MSG_set_channel_number().
1112 * \param max_duration the maximum time to wait for a task before giving
1113 up. In such a case, #MSG_TRANSFER_FAILURE will be returned, \a task
1114 will not be modified and will still be
1115 equal to \c NULL when returning.
1116 * \return a #msg_error_t indicating whether the operation was successful (#MSG_OK), or why it failed otherwise.
1119 MSG_task_get_with_timeout(msg_task_t * task, m_channel_t channel,
1120 double max_duration)
1122 XBT_WARN("DEPRECATED! Now use MSG_task_receive_with_timeout");
1123 return MSG_task_get_ext(task, channel, max_duration, NULL);
1127 MSG_task_get_ext(msg_task_t * task, m_channel_t channel, double timeout,
1130 XBT_WARN("DEPRECATED! Now use MSG_task_receive_ext");
1131 xbt_assert((channel >= 0)
1132 && (channel < msg_global->max_channel), "Invalid channel %d",
1136 MSG_mailbox_get_task_ext(MSG_mailbox_get_by_channel
1137 (MSG_host_self(), channel), task, host,