1 /* Copyright (c) 2004-2017. 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. */
8 #include "src/kernel/activity/ExecImpl.hpp"
9 #include "src/msg/msg_private.hpp"
10 #include "src/simix/smx_private.hpp" /* MSG_task_listen looks inside the rdv directly. Not clean. */
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_gos, msg, "Logging specific to MSG (gos)");
16 /** \ingroup msg_task_usage
17 * \brief Executes a task and waits for its termination.
19 * This function is used for describing the behavior of a process. It 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 or #MSG_HOST_FAILURE otherwise
23 msg_error_t MSG_task_execute(msg_task_t task)
25 return MSG_parallel_task_execute(task);
28 /** \ingroup msg_task_usage
29 * \brief Executes a parallel task and waits for its termination.
31 * \param task a #msg_task_t to execute on the location on which the process is running.
33 * \return #MSG_OK if the task was successfully completed, #MSG_TASK_CANCELED
34 * or #MSG_HOST_FAILURE otherwise
36 msg_error_t MSG_parallel_task_execute(msg_task_t task)
38 return MSG_parallel_task_execute_with_timeout(task, -1);
41 msg_error_t MSG_parallel_task_execute_with_timeout(msg_task_t task, double timeout)
43 simdata_task_t simdata = task->simdata;
44 e_smx_state_t comp_state;
45 msg_error_t status = MSG_OK;
47 TRACE_msg_task_execute_start(task);
49 xbt_assert((not simdata->compute) && not task->simdata->isused,
50 "This task is executed somewhere else. Go fix your code!");
52 XBT_DEBUG("Computing on %s", MSG_process_get_name(MSG_process_self()));
54 if (simdata->flops_amount <= 0.0 && not simdata->host_nb) {
55 TRACE_msg_task_execute_end(task);
62 if (simdata->host_nb > 0) {
64 boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(simcall_execution_parallel_start(
65 task->name, simdata->host_nb, simdata->host_list, simdata->flops_parallel_amount,
66 simdata->bytes_parallel_amount, -1.0, timeout));
67 XBT_DEBUG("Parallel execution action created: %p", simdata->compute.get());
69 simdata->compute = boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(
70 simcall_execution_start(task->name, simdata->flops_amount, simdata->priority, simdata->bound,
71 MSG_process_get_host(MSG_process_self())));
73 simcall_set_category(simdata->compute, task->category);
74 comp_state = simcall_execution_wait(simdata->compute);
76 simdata->setNotUsed();
78 XBT_DEBUG("Execution task '%s' finished in state %d", task->name, (int)comp_state);
83 status = MSG_TASK_CANCELED;
86 status = MSG_HOST_FAILURE;
96 /* action ended, set comm and compute = nullptr, the actions is already destroyed in the main function */
97 simdata->flops_amount = 0.0;
98 simdata->comm = nullptr;
99 simdata->compute = nullptr;
100 TRACE_msg_task_execute_end(task);
105 /** \ingroup msg_task_usage
106 * \brief Sleep for the specified number of seconds
108 * Makes the current process sleep until \a time seconds have elapsed.
110 * \param nb_sec a number of second
112 msg_error_t MSG_process_sleep(double nb_sec)
114 msg_error_t status = MSG_OK;
116 TRACE_msg_process_sleep_in(MSG_process_self());
119 simcall_process_sleep(nb_sec);
122 if (e.category == cancel_error) {
123 XBT_DEBUG("According to the JAVA API, a sleep call should only deal with HostFailureException, I'm lost.");
124 // adsein: MSG_TASK_CANCELED is assigned when someone kills the process that made the sleep, this is not
125 // correct. For instance, when the node is turned off, the error should be MSG_HOST_FAILURE, which is by the way
126 // and according to the JAVA document, the only exception that can be triggered by MSG_Process_sleep call.
127 // To avoid possible impacts in the code, I just raised a host_failure exception for the moment in the JAVA code
128 // and did not change anythings at the C level.
129 // See comment in the jmsg_process.c file, function JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_sleep(JNIEnv *env, jclass cls, jlong jmillis, jint jnanos)
130 status = MSG_TASK_CANCELED;
135 TRACE_msg_process_sleep_out(MSG_process_self());
139 /** \ingroup msg_task_usage
140 * \brief Receives a task from a mailbox.
142 * This is a blocking function, the execution flow will be blocked until the task is received. See #MSG_task_irecv
143 * for receiving tasks asynchronously.
145 * \param task a memory location for storing a #msg_task_t.
146 * \param alias name of the mailbox to receive the task from
149 * #MSG_OK if the task was successfully received,
150 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE otherwise.
152 msg_error_t MSG_task_receive(msg_task_t * task, const char *alias)
154 return MSG_task_receive_with_timeout(task, alias, -1);
157 /** \ingroup msg_task_usage
158 * \brief Receives a task from a mailbox at a given rate.
160 * \param task a memory location for storing a #msg_task_t.
161 * \param alias name of the mailbox to receive the task from
162 * \param rate limit the reception to rate bandwidth (byte/sec)
164 * The rate parameter can be used to receive a task with a limited
165 * bandwidth (smaller than the physical available value). Use
166 * MSG_task_receive() if you don't limit the rate (or pass -1 as a
167 * rate value do disable this feature).
170 * #MSG_OK if the task was successfully received,
171 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE otherwise.
173 msg_error_t MSG_task_receive_bounded(msg_task_t * task, const char *alias, double rate)
175 return MSG_task_receive_with_timeout_bounded(task, alias, -1, rate);
178 /** \ingroup msg_task_usage
179 * \brief Receives a task from a mailbox with a given timeout.
181 * This is a blocking function with a timeout, the execution flow will be blocked until the task is received or the
182 * timeout is achieved. See #MSG_task_irecv for receiving tasks asynchronously. You can provide a -1 timeout
183 * to obtain an infinite timeout.
185 * \param task a memory location for storing a #msg_task_t.
186 * \param alias name of the mailbox to receive the task from
187 * \param timeout is the maximum wait time for completion (if -1, this call is the same as #MSG_task_receive)
190 * #MSG_OK if the task was successfully received,
191 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE, or #MSG_TIMEOUT otherwise.
193 msg_error_t MSG_task_receive_with_timeout(msg_task_t * task, const char *alias, double timeout)
195 return MSG_task_receive_ext(task, alias, timeout, nullptr);
198 /** \ingroup msg_task_usage
199 * \brief Receives a task from a mailbox with a given timeout and at a given rate.
201 * \param task a memory location for storing a #msg_task_t.
202 * \param alias name of the mailbox to receive the task from
203 * \param timeout is the maximum wait time for completion (if -1, this call is the same as #MSG_task_receive)
204 * \param rate limit the reception to rate bandwidth (byte/sec)
206 * The rate parameter can be used to send a task with a limited
207 * bandwidth (smaller than the physical available value). Use
208 * MSG_task_receive() if you don't limit the rate (or pass -1 as a
209 * rate value do disable this feature).
212 * #MSG_OK if the task was successfully received,
213 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE, or #MSG_TIMEOUT otherwise.
215 msg_error_t MSG_task_receive_with_timeout_bounded(msg_task_t * task, const char *alias, double timeout,double rate)
217 return MSG_task_receive_ext_bounded(task, alias, timeout, nullptr, rate);
220 /** \ingroup msg_task_usage
221 * \brief Receives a task from a mailbox from a specific host with a given timeout.
223 * This is a blocking function with a timeout, the execution flow will be blocked until the task is received or the
224 * timeout is achieved. See #MSG_task_irecv for receiving tasks asynchronously. You can provide a -1 timeout
225 * to obtain an infinite timeout.
227 * \param task a memory location for storing a #msg_task_t.
228 * \param alias name of the mailbox to receive the task from
229 * \param timeout is the maximum wait time for completion (provide -1 for no timeout)
230 * \param host a #msg_host_t host from where the task was sent
233 * #MSG_OK if the task was successfully received,
234 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE, or #MSG_TIMEOUT otherwise.
236 msg_error_t MSG_task_receive_ext(msg_task_t * task, const char *alias, double timeout, msg_host_t host)
238 XBT_DEBUG("MSG_task_receive_ext: Trying to receive a message on mailbox '%s'", alias);
239 return MSG_task_receive_ext_bounded(task, alias, timeout, host, -1.0);
242 /** \ingroup msg_task_usage
243 * \brief Receives a task from a mailbox from a specific host with a given timeout and at a given rate.
245 * \param task a memory location for storing a #msg_task_t.
246 * \param alias name of the mailbox to receive the task from
247 * \param timeout is the maximum wait time for completion (provide -1 for no timeout)
248 * \param host a #msg_host_t host from where the task was sent
249 * \param rate limit the reception to rate bandwidth (byte/sec)
251 * The rate parameter can be used to receive a task with a limited
252 * bandwidth (smaller than the physical available value). Use
253 * MSG_task_receive_ext() if you don't limit the rate (or pass -1 as a
254 * rate value do disable this feature).
257 * #MSG_OK if the task was successfully received,
258 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE, or #MSG_TIMEOUT otherwise.
260 msg_error_t MSG_task_receive_ext_bounded(msg_task_t * task, const char *alias, double timeout, msg_host_t host,
263 XBT_DEBUG("MSG_task_receive_ext: Trying to receive a message on mailbox '%s'", alias);
264 simgrid::s4u::MailboxPtr mailbox = simgrid::s4u::Mailbox::byName(alias);
265 msg_error_t ret = MSG_OK;
266 /* We no longer support getting a task from a specific host */
270 TRACE_msg_task_get_start();
273 xbt_assert(task, "Null pointer for the task storage");
276 XBT_WARN("Asked to write the received task in a non empty struct -- proceeding.");
278 /* Try to receive it by calling SIMIX network layer */
280 simcall_comm_recv(MSG_process_self()->getImpl(), mailbox->getImpl(), task, nullptr, nullptr, nullptr, nullptr, timeout, rate);
281 XBT_DEBUG("Got task %s from %s", (*task)->name, mailbox->getCname());
282 (*task)->simdata->setNotUsed();
285 switch (e.category) {
288 ret = MSG_HOST_FAILURE;
291 ret = MSG_TRANSFER_FAILURE;
301 if (ret != MSG_HOST_FAILURE && ret != MSG_TRANSFER_FAILURE && ret != MSG_TIMEOUT) {
302 TRACE_msg_task_get_end(*task);
307 /* Internal function used to factorize code between MSG_task_isend_with_matching() and MSG_task_dsend(). */
308 static inline msg_comm_t MSG_task_isend_internal(msg_task_t task, const char* alias,
309 int (*match_fun)(void*, void*, void*), void* match_data,
310 void_f_pvoid_t cleanup, int detached)
312 simdata_task_t t_simdata = nullptr;
313 msg_process_t myself = MSG_process_self();
314 simgrid::s4u::MailboxPtr mailbox = simgrid::s4u::Mailbox::byName(alias);
315 int call_end = TRACE_msg_task_put_start(task);
317 /* Prepare the task to send */
318 t_simdata = task->simdata;
319 t_simdata->sender = myself;
320 t_simdata->source = MSG_host_self();
321 t_simdata->setUsed();
322 t_simdata->comm = nullptr;
323 msg_global->sent_msg++;
325 /* Send it by calling SIMIX network layer */
327 simcall_comm_isend(myself->getImpl(), mailbox->getImpl(), t_simdata->bytes_amount, t_simdata->rate, task,
328 sizeof(void*), (simix_match_func_t)match_fun, cleanup, nullptr, match_data, detached);
329 t_simdata->comm = boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(act);
331 msg_comm_t comm = nullptr;
333 comm = new simgrid::msg::Comm(task, nullptr, act);
336 if (TRACE_is_enabled())
337 simcall_set_category(act, task->category);
339 TRACE_msg_task_put_end();
344 /** \ingroup msg_task_usage
345 * \brief Sends a task on a mailbox.
347 * This is a non blocking function: use MSG_comm_wait() or MSG_comm_test() to end the communication.
349 * \param task a #msg_task_t to send on another location.
350 * \param alias name of the mailbox to sent the task to
351 * \return the msg_comm_t communication created
353 msg_comm_t MSG_task_isend(msg_task_t task, const char *alias)
355 return MSG_task_isend_internal(task, alias, nullptr, nullptr, nullptr, 0);
358 /** \ingroup msg_task_usage
359 * \brief Sends a task on a mailbox with a maximum rate
361 * This is a non blocking function: use MSG_comm_wait() or MSG_comm_test() to end the communication. The maxrate
362 * parameter allows the application to limit the bandwidth utilization of network links when sending the task.
364 * \param task a #msg_task_t to send on another location.
365 * \param alias name of the mailbox to sent the task to
366 * \param maxrate the maximum communication rate for sending this task (byte/sec).
367 * \return the msg_comm_t communication created
369 msg_comm_t MSG_task_isend_bounded(msg_task_t task, const char *alias, double maxrate)
371 task->simdata->rate = maxrate;
372 return MSG_task_isend_internal(task, alias, nullptr, nullptr, nullptr, 0);
375 /** \ingroup msg_task_usage
376 * \brief Sends a task on a mailbox, with support for matching requests
378 * This is a non blocking function: use MSG_comm_wait() or MSG_comm_test() to end the communication.
380 * \param task a #msg_task_t to send on another location.
381 * \param alias name of the mailbox to sent the task to
382 * \param match_fun boolean function which parameters are:
383 * - match_data_provided_here
384 * - match_data_provided_by_other_side_if_any
385 * - the_smx_synchro_describing_the_other_side
386 * \param match_data user provided data passed to match_fun
387 * \return the msg_comm_t communication created
389 msg_comm_t MSG_task_isend_with_matching(msg_task_t task, const char* alias, int (*match_fun)(void*, void*, void*),
392 return MSG_task_isend_internal(task, alias, match_fun, match_data, nullptr, 0);
395 /** \ingroup msg_task_usage
396 * \brief Sends a task on a mailbox.
398 * This is a non blocking detached send function.
399 * Think of it as a best effort send. Keep in mind that the third parameter is only called if the communication fails.
400 * If the communication does work, it is responsibility of the receiver code to free anything related to the task, as
401 * usual. More details on this can be obtained on
402 * <a href="http://lists.gforge.inria.fr/pipermail/simgrid-user/2011-November/002649.html">this thread</a>
403 * in the SimGrid-user mailing list archive.
405 * \param task a #msg_task_t to send on another location.
406 * \param alias name of the mailbox to sent the task to
407 * \param cleanup a function to destroy the task if the communication fails, e.g. MSG_task_destroy
408 * (if nullptr, no function will be called)
410 void MSG_task_dsend(msg_task_t task, const char *alias, void_f_pvoid_t cleanup)
412 MSG_task_isend_internal(task, alias, nullptr, nullptr, cleanup, 1);
415 /** \ingroup msg_task_usage
416 * \brief Sends a task on a mailbox with a maximal rate.
418 * This is a non blocking detached send function.
419 * Think of it as a best effort send. Keep in mind that the third parameter is only called if the communication fails.
420 * If the communication does work, it is responsibility of the receiver code to free anything related to the task, as
421 * usual. More details on this can be obtained on
422 * <a href="http://lists.gforge.inria.fr/pipermail/simgrid-user/2011-November/002649.html">this thread</a>
423 * in the SimGrid-user mailing list archive.
425 * The rate parameter can be used to send a task with a limited
426 * bandwidth (smaller than the physical available value). Use
427 * MSG_task_dsend() if you don't limit the rate (or pass -1 as a rate
428 * value do disable this feature).
430 * \param task a #msg_task_t to send on another location.
431 * \param alias name of the mailbox to sent the task to
432 * \param cleanup a function to destroy the task if the
433 * communication fails, e.g. MSG_task_destroy
434 * (if nullptr, no function will be called)
435 * \param maxrate the maximum communication rate for sending this task (byte/sec)
438 void MSG_task_dsend_bounded(msg_task_t task, const char *alias, void_f_pvoid_t cleanup, double maxrate)
440 task->simdata->rate = maxrate;
441 MSG_task_dsend(task, alias, cleanup);
444 /** \ingroup msg_task_usage
445 * \brief Starts listening for receiving a task from an asynchronous communication.
447 * This is a non blocking function: use MSG_comm_wait() or MSG_comm_test() to end the communication.
449 * \param task a memory location for storing a #msg_task_t. has to be valid until the end of the communication.
450 * \param name of the mailbox to receive the task on
451 * \return the msg_comm_t communication created
453 msg_comm_t MSG_task_irecv(msg_task_t *task, const char *name)
455 return MSG_task_irecv_bounded(task, name, -1.0);
458 /** \ingroup msg_task_usage
459 * \brief Starts listening for receiving a task from an asynchronous communication at a given rate.
461 * The rate parameter can be used to receive a task with a limited
462 * bandwidth (smaller than the physical available value). Use
463 * MSG_task_irecv() if you don't limit the rate (or pass -1 as a rate
464 * value do disable this feature).
466 * \param task a memory location for storing a #msg_task_t. has to be valid until the end of the communication.
467 * \param name of the mailbox to receive the task on
468 * \param rate limit the bandwidth to the given rate (byte/sec)
469 * \return the msg_comm_t communication created
471 msg_comm_t MSG_task_irecv_bounded(msg_task_t *task, const char *name, double rate)
473 simgrid::s4u::MailboxPtr mbox = simgrid::s4u::Mailbox::byName(name);
475 /* FIXME: these functions are not traceable */
477 xbt_assert(task, "Null pointer for the task storage");
480 XBT_CRITICAL("MSG_task_irecv() was asked to write in a non empty task struct.");
482 /* Try to receive it by calling SIMIX network layer */
484 new simgrid::msg::Comm(nullptr, task, simcall_comm_irecv(SIMIX_process_self(), mbox->getImpl(), task, nullptr,
485 nullptr, nullptr, nullptr, rate));
490 /** \ingroup msg_task_usage
491 * \brief Checks whether a communication is done, and if yes, finalizes it.
492 * \param comm the communication to test
493 * \return TRUE if the communication is finished
494 * (but it may have failed, use MSG_comm_get_status() to know its status)
495 * or FALSE if the communication is not finished yet
496 * If the status is FALSE, don't forget to use MSG_process_sleep() after the test.
498 int MSG_comm_test(msg_comm_t comm)
503 finished = simcall_comm_test(comm->s_comm);
504 if (finished && comm->task_received != nullptr) {
505 /* I am the receiver */
506 (*comm->task_received)->simdata->setNotUsed();
510 switch (e.category) {
512 comm->status = MSG_TRANSFER_FAILURE;
516 comm->status = MSG_TIMEOUT;
527 /** \ingroup msg_task_usage
528 * \brief This function checks if a communication is finished.
529 * \param comms a vector of communications
530 * \return the position of the finished communication if any
531 * (but it may have failed, use MSG_comm_get_status() to know its status),
532 * or -1 if none is finished
534 int MSG_comm_testany(xbt_dynar_t comms)
536 int finished_index = -1;
538 /* Create the equivalent array with SIMIX objects: */
539 std::vector<simgrid::kernel::activity::ActivityImplPtr> s_comms;
540 s_comms.reserve(xbt_dynar_length(comms));
543 xbt_dynar_foreach(comms, cursor, comm) {
544 s_comms.push_back(comm->s_comm);
547 msg_error_t status = MSG_OK;
549 finished_index = simcall_comm_testany(s_comms.data(), s_comms.size());
552 switch (e.category) {
554 finished_index = e.value;
555 status = MSG_TRANSFER_FAILURE;
558 finished_index = e.value;
559 status = MSG_TIMEOUT;
566 if (finished_index != -1) {
567 comm = xbt_dynar_get_as(comms, finished_index, msg_comm_t);
568 /* the communication is finished */
569 comm->status = status;
571 if (status == MSG_OK && comm->task_received != nullptr) {
572 /* I am the receiver */
573 (*comm->task_received)->simdata->setNotUsed();
577 return finished_index;
580 /** \ingroup msg_task_usage
581 * \brief Destroys a communication.
582 * \param comm the communication to destroy.
584 void MSG_comm_destroy(msg_comm_t comm)
589 /** \ingroup msg_task_usage
590 * \brief Wait for the completion of a communication.
592 * It takes two parameters.
593 * \param comm the communication to wait.
594 * \param timeout Wait until the communication terminates or the timeout occurs.
595 * You can provide a -1 timeout to obtain an infinite timeout.
596 * \return msg_error_t
598 msg_error_t MSG_comm_wait(msg_comm_t comm, double timeout)
601 simcall_comm_wait(comm->s_comm, timeout);
603 if (comm->task_received != nullptr) {
604 /* I am the receiver */
605 (*comm->task_received)->simdata->setNotUsed();
608 /* FIXME: these functions are not traceable */
611 switch (e.category) {
613 comm->status = MSG_TRANSFER_FAILURE;
616 comm->status = MSG_TIMEOUT;
626 /** \ingroup msg_task_usage
627 * \brief This function is called by a sender and permit to wait for each communication
629 * \param comm a vector of communication
630 * \param nb_elem is the size of the comm vector
631 * \param timeout for each call of MSG_comm_wait
633 void MSG_comm_waitall(msg_comm_t * comm, int nb_elem, double timeout)
635 for (int i = 0; i < nb_elem; i++)
636 MSG_comm_wait(comm[i], timeout);
639 /** \ingroup msg_task_usage
640 * \brief This function waits for the first communication finished in a list.
641 * \param comms a vector of communications
642 * \return the position of the first finished communication
643 * (but it may have failed, use MSG_comm_get_status() to know its status)
645 int MSG_comm_waitany(xbt_dynar_t comms)
647 int finished_index = -1;
649 /* create the equivalent dynar with SIMIX objects */
650 xbt_dynar_t s_comms = xbt_dynar_new(sizeof(smx_activity_t), [](void*ptr){
651 intrusive_ptr_release(*(simgrid::kernel::activity::ActivityImpl**)ptr);
655 xbt_dynar_foreach(comms, cursor, comm) {
656 intrusive_ptr_add_ref(comm->s_comm.get());
657 xbt_dynar_push_as(s_comms, simgrid::kernel::activity::ActivityImpl*, comm->s_comm.get());
660 msg_error_t status = MSG_OK;
662 finished_index = simcall_comm_waitany(s_comms, -1);
665 switch (e.category) {
667 finished_index = e.value;
668 status = MSG_TRANSFER_FAILURE;
671 finished_index = e.value;
672 status = MSG_TIMEOUT;
679 xbt_assert(finished_index != -1, "WaitAny returned -1");
680 xbt_dynar_free(&s_comms);
682 comm = xbt_dynar_get_as(comms, finished_index, msg_comm_t);
683 /* the communication is finished */
684 comm->status = status;
686 if (comm->task_received != nullptr) {
687 /* I am the receiver */
688 (*comm->task_received)->simdata->setNotUsed();
691 return finished_index;
695 * \ingroup msg_task_usage
696 * \brief Returns the error (if any) that occurred during a finished communication.
697 * \param comm a finished communication
698 * \return the status of the communication, or #MSG_OK if no error occurred
699 * during the communication
701 msg_error_t MSG_comm_get_status(msg_comm_t comm) {
706 /** \ingroup msg_task_usage
707 * \brief Get a task (#msg_task_t) from a communication
709 * \param comm the communication where to get the task
710 * \return the task from the communication
712 msg_task_t MSG_comm_get_task(msg_comm_t comm)
714 xbt_assert(comm, "Invalid parameter");
716 return comm->task_received ? *comm->task_received : comm->task_sent;
720 * \brief This function is called by SIMIX in kernel mode to copy the data of a comm.
721 * \param synchro the comm
722 * \param buff the data copied
723 * \param buff_size size of the buffer
725 void MSG_comm_copy_data_from_SIMIX(smx_activity_t synchro, void* buff, size_t buff_size)
727 simgrid::kernel::activity::CommImplPtr comm =
728 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
730 SIMIX_comm_copy_pointer_callback(comm, buff, buff_size);
732 // notify the user callback if any
733 if (msg_global->task_copy_callback) {
734 msg_task_t task = static_cast<msg_task_t>(buff);
735 msg_global->task_copy_callback(task, comm->src_proc->ciface(), comm->dst_proc->ciface());
739 /** \ingroup msg_task_usage
740 * \brief Sends a task to a mailbox
742 * This is a blocking function, the execution flow will be blocked until the task is sent (and received on the other
743 * side if #MSG_task_receive is used).
744 * See #MSG_task_isend for sending tasks asynchronously.
746 * \param task the task to be sent
747 * \param alias the mailbox name to where the task is sent
749 * \return Returns #MSG_OK if the task was successfully sent,
750 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE otherwise.
752 msg_error_t MSG_task_send(msg_task_t task, const char *alias)
754 XBT_DEBUG("MSG_task_send: Trying to send a message on mailbox '%s'", alias);
755 return MSG_task_send_with_timeout(task, alias, -1);
758 /** \ingroup msg_task_usage
759 * \brief Sends a task to a mailbox with a maximum rate
761 * This is a blocking function, the execution flow will be blocked until the task is sent. The maxrate parameter allows
762 * the application to limit the bandwidth utilization of network links when sending the task.
764 * The maxrate parameter can be used to send a task with a limited
765 * bandwidth (smaller than the physical available value). Use
766 * MSG_task_send() if you don't limit the rate (or pass -1 as a rate
767 * value do disable this feature).
769 * \param task the task to be sent
770 * \param alias the mailbox name to where the task is sent
771 * \param maxrate the maximum communication rate for sending this task (byte/sec)
773 * \return Returns #MSG_OK if the task was successfully sent,
774 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE otherwise.
776 msg_error_t MSG_task_send_bounded(msg_task_t task, const char *alias, double maxrate)
778 task->simdata->rate = maxrate;
779 return MSG_task_send(task, alias);
782 /** \ingroup msg_task_usage
783 * \brief Sends a task to a mailbox with a timeout
785 * This is a blocking function, the execution flow will be blocked until the task is sent or the timeout is achieved.
787 * \param task the task to be sent
788 * \param alias the mailbox name to where the task is sent
789 * \param timeout is the maximum wait time for completion (if -1, this call is the same as #MSG_task_send)
791 * \return Returns #MSG_OK if the task was successfully sent,
792 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE, or #MSG_TIMEOUT otherwise.
794 msg_error_t MSG_task_send_with_timeout(msg_task_t task, const char *alias, double timeout)
796 msg_error_t ret = MSG_OK;
797 simdata_task_t t_simdata = nullptr;
798 msg_process_t process = MSG_process_self();
799 simgrid::s4u::MailboxPtr mailbox = simgrid::s4u::Mailbox::byName(alias);
801 int call_end = TRACE_msg_task_put_start(task);
803 /* Prepare the task to send */
804 t_simdata = task->simdata;
805 t_simdata->sender = process;
806 t_simdata->source = MSG_host_self();
808 t_simdata->setUsed();
810 t_simdata->comm = nullptr;
811 msg_global->sent_msg++;
813 /* Try to send it by calling SIMIX network layer */
815 smx_activity_t comm = nullptr; /* MC needs the comm to be set to nullptr during the simix call */
816 comm = simcall_comm_isend(SIMIX_process_self(), mailbox->getImpl(),t_simdata->bytes_amount,
817 t_simdata->rate, task, sizeof(void *), nullptr, nullptr, nullptr, task, 0);
818 if (TRACE_is_enabled())
819 simcall_set_category(comm, task->category);
820 t_simdata->comm = boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(comm);
821 simcall_comm_wait(comm, timeout);
824 switch (e.category) {
826 ret = MSG_HOST_FAILURE;
829 ret = MSG_TRANSFER_FAILURE;
838 /* If the send failed, it is not used anymore */
839 t_simdata->setNotUsed();
843 TRACE_msg_task_put_end();
847 /** \ingroup msg_task_usage
848 * \brief Sends a task to a mailbox with a timeout and with a maximum rate
850 * This is a blocking function, the execution flow will be blocked until the task is sent or the timeout is achieved.
852 * The maxrate parameter can be used to send a task with a limited
853 * bandwidth (smaller than the physical available value). Use
854 * MSG_task_send_with_timeout() if you don't limit the rate (or pass -1 as a rate
855 * value do disable this feature).
857 * \param task the task to be sent
858 * \param alias the mailbox name to where the task is sent
859 * \param timeout is the maximum wait time for completion (if -1, this call is the same as #MSG_task_send)
860 * \param maxrate the maximum communication rate for sending this task (byte/sec)
862 * \return Returns #MSG_OK if the task was successfully sent,
863 * #MSG_HOST_FAILURE, or #MSG_TRANSFER_FAILURE, or #MSG_TIMEOUT otherwise.
865 msg_error_t MSG_task_send_with_timeout_bounded(msg_task_t task, const char *alias, double timeout, double maxrate)
867 task->simdata->rate = maxrate;
868 return MSG_task_send_with_timeout(task, alias, timeout);
871 /** \ingroup msg_task_usage
872 * \brief Check if there is a communication going on in a mailbox.
874 * \param alias the name of the mailbox to be considered
876 * \return Returns 1 if there is a communication, 0 otherwise
878 int MSG_task_listen(const char *alias)
880 simgrid::s4u::MailboxPtr mbox = simgrid::s4u::Mailbox::byName(alias);
881 return mbox->listen() ? 1 : 0;
884 /** \ingroup msg_task_usage
885 * \brief Look if there is a communication on a mailbox and return the PID of the sender process.
887 * \param alias the name of the mailbox to be considered
889 * \return Returns the PID of sender process,
890 * -1 if there is no communication in the mailbox.
892 int MSG_task_listen_from(const char *alias)
894 simgrid::s4u::MailboxPtr mbox = simgrid::s4u::Mailbox::byName(alias);
895 simgrid::kernel::activity::CommImplPtr comm =
896 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(mbox->front());
901 return MSG_process_get_PID(static_cast<msg_task_t>(comm->src_buff)->simdata->sender);
904 /** \ingroup msg_task_usage
905 * \brief Sets the tracing category of a task.
907 * This function should be called after the creation of a MSG task, to define the category of that task. The
908 * first parameter task must contain a task that was created with the function #MSG_task_create. The second
909 * parameter category must contain a category that was previously declared with the function #TRACE_category
910 * (or with #TRACE_category_with_color).
912 * See \ref outcomes_vizu for details on how to trace the (categorized) resource utilization.
914 * \param task the task that is going to be categorized
915 * \param category the name of the category to be associated to the task
917 * \see MSG_task_get_category, TRACE_category, TRACE_category_with_color
919 void MSG_task_set_category (msg_task_t task, const char *category)
921 TRACE_msg_set_task_category (task, category);
924 /** \ingroup msg_task_usage
926 * \brief Gets the current tracing category of a task.
928 * \param task the task to be considered
930 * \see MSG_task_set_category
932 * \return Returns the name of the tracing category of the given task, nullptr otherwise
934 const char *MSG_task_get_category (msg_task_t task)
936 return task->category;