-/* $Id$ */
-
-/* Copyright (c) 2002-2007 Arnaud Legrand. */
-/* Copyright (c) 2007 Bruno Donassolo. */
-/* All rights reserved. */
+/* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
+ * All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
-#include "msg/private.h"
+#include "private.h"
#include "xbt/sysdep.h"
+#include "mc/mc.h"
#include "xbt/log.h"
#include "mailbox.h"
* This function is used for describing the behavior of an agent. It
* takes only one parameter.
* \param task a #m_task_t to execute on the location on which the
- agent is running.
+ agent is running.
* \return #MSG_FATAL if \a task is not properly initialized and
* #MSG_OK otherwise.
*/
{
simdata_task_t simdata = NULL;
m_process_t self = MSG_process_self();
- e_surf_action_state_t state = SURF_ACTION_NOT_IN_THE_SYSTEM;
CHECK_HOST();
-#ifdef HAVE_TRACING
- TRACE_msg_task_execute_start (task);
-#endif
simdata = task->simdata;
+ xbt_assert0(simdata->host_nb == 0,
+ "This is a parallel task. Go to hell.");
+
+#ifdef HAVE_TRACING
+ TRACE_msg_task_execute_start(task);
+#endif
+
xbt_assert1((!simdata->compute) && (task->simdata->refcount == 1),
- "This task is executed somewhere else. Go fix your code! %d", task->simdata->refcount);
+ "This task is executed somewhere else. Go fix your code! %d",
+ task->simdata->refcount);
DEBUG1("Computing on %s", MSG_process_self()->simdata->m_host->name);
if (simdata->computation_amount == 0) {
#ifdef HAVE_TRACING
- TRACE_msg_task_execute_end (task);
+ TRACE_msg_task_execute_end(task);
#endif
return MSG_OK;
}
simdata->refcount++;
- SIMIX_mutex_lock(simdata->mutex);
simdata->compute =
- SIMIX_action_execute(SIMIX_host_self(), task->name,
- simdata->computation_amount);
- SIMIX_action_set_priority(simdata->compute, simdata->priority);
+ SIMIX_req_host_execute(task->name, SIMIX_host_self(),
+ simdata->computation_amount);
+ SIMIX_req_host_execution_set_priority(simdata->compute, simdata->priority);
+#ifdef HAVE_TRACING
+ SIMIX_req_set_category(simdata->compute, task->category);
+#endif
- /* changed to waiting action since we are always waiting one action (execute, communicate or sleep) */
self->simdata->waiting_action = simdata->compute;
- SIMIX_register_action_to_condition(simdata->compute, simdata->cond);
- do {
- SIMIX_cond_wait(simdata->cond, simdata->mutex);
- state = SIMIX_action_get_state(simdata->compute);
- } while (state == SURF_ACTION_READY || state == SURF_ACTION_RUNNING);
- SIMIX_unregister_action_to_condition(simdata->compute, simdata->cond);
+ SIMIX_req_host_execution_wait(simdata->compute);
self->simdata->waiting_action = NULL;
- SIMIX_mutex_unlock(simdata->mutex);
simdata->refcount--;
- if (SIMIX_action_get_state(task->simdata->compute) == SURF_ACTION_DONE) {
+ DEBUG2("Execution task '%s' finished in state %d", task->name, SIMIX_req_host_execution_get_state(task->simdata->compute));
+ if (SIMIX_req_host_execution_get_state(task->simdata->compute) == SIMIX_DONE) {
/* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */
- SIMIX_action_destroy(task->simdata->compute);
+ SIMIX_req_host_execution_destroy(task->simdata->compute);
simdata->computation_amount = 0.0;
simdata->comm = NULL;
simdata->compute = NULL;
#ifdef HAVE_TRACING
- TRACE_msg_task_execute_end (task);
+ TRACE_msg_task_execute_end(task);
#endif
MSG_RETURN(MSG_OK);
- } else if (SIMIX_host_get_state(SIMIX_host_self()) == 0) {
+ } else if (SIMIX_req_host_get_state(SIMIX_host_self()) == 0) {
/* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */
- SIMIX_action_destroy(task->simdata->compute);
+ SIMIX_req_host_execution_destroy(task->simdata->compute);
simdata->comm = NULL;
simdata->compute = NULL;
#ifdef HAVE_TRACING
- TRACE_msg_task_execute_end (task);
+ TRACE_msg_task_execute_end(task);
#endif
MSG_RETURN(MSG_HOST_FAILURE);
} else {
/* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */
- SIMIX_action_destroy(task->simdata->compute);
+ SIMIX_req_host_execution_destroy(task->simdata->compute);
simdata->comm = NULL;
simdata->compute = NULL;
#ifdef HAVE_TRACING
- TRACE_msg_task_execute_end (task);
+ TRACE_msg_task_execute_end(task);
#endif
MSG_RETURN(MSG_TASK_CANCELLED);
}
* \brief Creates a new #m_task_t (a parallel one....).
*
* A constructor for #m_task_t taking six arguments and returning the
- corresponding object.
+ corresponding object.
* \param name a name for the object. It is for user-level information
- and can be NULL.
+ and can be NULL.
* \param host_nb the number of hosts implied in the parallel task.
* \param host_list an array of \p host_nb m_host_t.
* \param computation_amount an array of \p host_nb
- doubles. computation_amount[i] is the total number of operations
- that have to be performed on host_list[i].
+ doubles. computation_amount[i] is the total number of operations
+ that have to be performed on host_list[i].
* \param communication_amount an array of \p host_nb* \p host_nb doubles.
* \param data a pointer to any data may want to attach to the new
- object. It is for user-level information and can be NULL. It can
- be retrieved with the function \ref MSG_task_get_data.
+ object. It is for user-level information and can be NULL. It can
+ be retrieved with the function \ref MSG_task_get_data.
* \see m_task_t
* \return The new corresponding object.
*/
/* Simulator Data */
simdata->computation_amount = 0;
simdata->message_size = 0;
- simdata->cond = SIMIX_cond_init();
- simdata->mutex = SIMIX_mutex_init();
simdata->compute = NULL;
simdata->comm = NULL;
simdata->rate = -1.0;
{
simdata_task_t simdata = NULL;
m_process_t self = MSG_process_self();
- e_surf_action_state_t state = SURF_ACTION_NOT_IN_THE_SYSTEM;
CHECK_HOST();
simdata = task->simdata;
&& (task->simdata->refcount == 1),
"This task is executed somewhere else. Go fix your code!");
- xbt_assert0(simdata->host_nb, "This is not a parallel task. Go to hell.");
+ xbt_assert0(simdata->host_nb,
+ "This is not a parallel task. Go to hell.");
- DEBUG1("Computing on %s", MSG_process_self()->simdata->m_host->name);
+ DEBUG1("Parallel computing on %s", MSG_process_self()->simdata->m_host->name);
simdata->refcount++;
- SIMIX_mutex_lock(simdata->mutex);
simdata->compute =
- SIMIX_action_parallel_execute(task->name, simdata->host_nb,
- simdata->host_list, simdata->comp_amount,
+ SIMIX_req_host_parallel_execute(task->name, simdata->host_nb,
+ simdata->host_list,
+ simdata->comp_amount,
simdata->comm_amount, 1.0, -1.0);
+ DEBUG1("Parallel execution action created: %p", simdata->compute);
self->simdata->waiting_action = simdata->compute;
- SIMIX_register_action_to_condition(simdata->compute, simdata->cond);
- do {
- SIMIX_cond_wait(simdata->cond, simdata->mutex);
- state = SIMIX_action_get_state(task->simdata->compute);
- } while (state == SURF_ACTION_READY || state == SURF_ACTION_RUNNING);
-
- SIMIX_unregister_action_to_condition(simdata->compute, simdata->cond);
+ SIMIX_req_host_execution_wait(simdata->compute);
self->simdata->waiting_action = NULL;
+ DEBUG2("Finished waiting for execution of action %p, state = %d", simdata->compute, SIMIX_req_host_execution_get_state(task->simdata->compute));
- SIMIX_mutex_unlock(simdata->mutex);
simdata->refcount--;
- if (SIMIX_action_get_state(task->simdata->compute) == SURF_ACTION_DONE) {
+ if (SIMIX_req_host_execution_get_state(task->simdata->compute) == SIMIX_DONE) {
/* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */
- SIMIX_action_destroy(task->simdata->compute);
+ SIMIX_req_host_execution_destroy(task->simdata->compute);
simdata->computation_amount = 0.0;
simdata->comm = NULL;
simdata->compute = NULL;
MSG_RETURN(MSG_OK);
- } else if (SIMIX_host_get_state(SIMIX_host_self()) == 0) {
+ } else if (SIMIX_req_host_get_state(SIMIX_host_self()) == 0) {
/* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */
- SIMIX_action_destroy(task->simdata->compute);
+ SIMIX_req_host_execution_destroy(task->simdata->compute);
simdata->comm = NULL;
simdata->compute = NULL;
MSG_RETURN(MSG_HOST_FAILURE);
} else {
/* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */
- SIMIX_action_destroy(task->simdata->compute);
+ SIMIX_req_host_execution_destroy(task->simdata->compute);
simdata->comm = NULL;
simdata->compute = NULL;
MSG_RETURN(MSG_TASK_CANCELLED);
}
-
}
*/
MSG_error_t MSG_process_sleep(double nb_sec)
{
- smx_action_t act_sleep;
- m_process_t proc = MSG_process_self();
- e_surf_action_state_t state = SURF_ACTION_NOT_IN_THE_SYSTEM;
- smx_mutex_t mutex;
- smx_cond_t cond;
+ e_smx_state_t state;
+ /*m_process_t proc = MSG_process_self();*/
#ifdef HAVE_TRACING
- TRACE_msg_process_sleep_in (MSG_process_self());
+ TRACE_msg_process_sleep_in(MSG_process_self());
#endif
/* create action to sleep */
- act_sleep =
- SIMIX_action_sleep(SIMIX_process_get_host(proc->simdata->s_process),
- nb_sec);
-
- mutex = SIMIX_mutex_init();
- SIMIX_mutex_lock(mutex);
-
- /* create conditional and register action to it */
- cond = SIMIX_cond_init();
-
- proc->simdata->waiting_action = act_sleep;
- SIMIX_register_action_to_condition(act_sleep, cond);
- do {
- SIMIX_cond_wait(cond, mutex);
- state = SIMIX_action_get_state(act_sleep);
- } while (state == SURF_ACTION_READY || state == SURF_ACTION_RUNNING);
- proc->simdata->waiting_action = NULL;
- SIMIX_unregister_action_to_condition(act_sleep, cond);
- SIMIX_mutex_unlock(mutex);
-
- /* remove variables */
- SIMIX_cond_destroy(cond);
- SIMIX_mutex_destroy(mutex);
-
- if (SIMIX_action_get_state(act_sleep) == SURF_ACTION_DONE) {
- if (SIMIX_host_get_state(SIMIX_host_self()) == SURF_RESOURCE_OFF) {
- SIMIX_action_destroy(act_sleep);
+ state = SIMIX_req_process_sleep(nb_sec);
+
+ /*proc->simdata->waiting_action = act_sleep;
+
+ FIXME: check if not setting the waiting_action breaks something on msg
+
+ proc->simdata->waiting_action = NULL;*/
+
+ if (state == SIMIX_DONE) {
+ if (SIMIX_req_host_get_state(SIMIX_host_self()) == SURF_RESOURCE_OFF) {
#ifdef HAVE_TRACING
- TRACE_msg_process_sleep_out (MSG_process_self());
+ TRACE_msg_process_sleep_out(MSG_process_self());
#endif
MSG_RETURN(MSG_HOST_FAILURE);
}
} else {
- SIMIX_action_destroy(act_sleep);
#ifdef HAVE_TRACING
- TRACE_msg_process_sleep_out (MSG_process_self());
+ TRACE_msg_process_sleep_out(MSG_process_self());
#endif
MSG_RETURN(MSG_HOST_FAILURE);
}
-
- SIMIX_action_destroy(act_sleep);
#ifdef HAVE_TRACING
- TRACE_msg_process_sleep_out (MSG_process_self());
+ TRACE_msg_process_sleep_out(MSG_process_self());
#endif
MSG_RETURN(MSG_OK);
}
*
* It takes three parameters.
* \param task a memory location for storing a #m_task_t. It will
- hold a task when this function will return. Thus \a task should not
- be equal to \c NULL and \a *task should be equal to \c NULL. If one of
- those two condition does not hold, there will be a warning message.
+ hold a task when this function will return. Thus \a task should not
+ be equal to \c NULL and \a *task should be equal to \c NULL. If one of
+ those two condition does not hold, there will be a warning message.
* \param channel the channel on which the agent should be
- listening. This value has to be >=0 and < than the maximal
- number of channels fixed with MSG_set_channel_number().
+ listening. This value has to be >=0 and < than the maximal
+ number of channels fixed with MSG_set_channel_number().
* \param host the host that is to be watched.
* \return #MSG_FATAL if \a task is equal to \c NULL, #MSG_WARNING
- if \a *task is not equal to \c NULL, and #MSG_OK otherwise.
+ if \a *task is not equal to \c NULL, and #MSG_OK otherwise.
*/
MSG_error_t
MSG_task_get_from_host(m_task_t * task, m_channel_t channel, m_host_t host)
*
* It takes two parameters.
* \param task a memory location for storing a #m_task_t. It will
- hold a task when this function will return. Thus \a task should not
- be equal to \c NULL and \a *task should be equal to \c NULL. If one of
- those two condition does not hold, there will be a warning message.
+ hold a task when this function will return. Thus \a task should not
+ be equal to \c NULL and \a *task should be equal to \c NULL. If one of
+ those two condition does not hold, there will be a warning message.
* \param channel the channel on which the agent should be
- listening. This value has to be >=0 and < than the maximal
- number of channels fixed with MSG_set_channel_number().
+ listening. This value has to be >=0 and < than the maximal
+ number of channels fixed with MSG_set_channel_number().
* \return #MSG_FATAL if \a task is equal to \c NULL, #MSG_WARNING
* if \a *task is not equal to \c NULL, and #MSG_OK otherwise.
*/
*
* It takes three parameters.
* \param task a memory location for storing a #m_task_t. It will
- hold a task when this function will return. Thus \a task should not
- be equal to \c NULL and \a *task should be equal to \c NULL. If one of
- those two condition does not hold, there will be a warning message.
+ hold a task when this function will return. Thus \a task should not
+ be equal to \c NULL and \a *task should be equal to \c NULL. If one of
+ those two condition does not hold, there will be a warning message.
* \param channel the channel on which the agent should be
- listening. This value has to be >=0 and < than the maximal
- number of channels fixed with MSG_set_channel_number().
+ listening. This value has to be >=0 and < than the maximal
+ number of channels fixed with MSG_set_channel_number().
* \param max_duration the maximum time to wait for a task before giving
- up. In such a case, #MSG_TRANSFER_FAILURE will be returned, \a task
- will not be modified and will still be
- equal to \c NULL when returning.
+ up. In such a case, #MSG_TRANSFER_FAILURE will be returned, \a task
+ will not be modified and will still be
+ equal to \c NULL when returning.
* \return #MSG_FATAL if \a task is equal to \c NULL, #MSG_WARNING
- if \a *task is not equal to \c NULL, and #MSG_OK otherwise.
+ if \a *task is not equal to \c NULL, and #MSG_OK otherwise.
*/
MSG_error_t
MSG_task_get_with_timeout(m_task_t * task, m_channel_t channel,
channel);
return
- MSG_mailbox_get_task_ext(MSG_mailbox_get_by_channel
- (MSG_host_self(), channel), task, host, timeout);
+ MSG_mailbox_get_task_ext(MSG_mailbox_get_by_channel
+ (MSG_host_self(), channel), task, host,
+ timeout);
}
MSG_error_t
-MSG_task_receive_from_host(m_task_t * task, const char *alias, m_host_t host)
+MSG_task_receive_from_host(m_task_t * task, const char *alias,
+ m_host_t host)
{
return MSG_task_receive_ext(task, alias, -1, host);
}
MSG_task_receive_ext(m_task_t * task, const char *alias, double timeout,
m_host_t host)
{
- return MSG_mailbox_get_task_ext(MSG_mailbox_get_by_alias(alias), task, host,
- timeout);
+ DEBUG1
+ ("MSG_task_receive_ext: Trying to receive a message on mailbox '%s'",
+ alias);
+ return MSG_mailbox_get_task_ext(MSG_mailbox_get_by_alias(alias), task,
+ host, timeout);
}
+/** \ingroup msg_gos_functions
+ * \brief Send a task on a channel.
+ *
+ * This function takes two parameter.
+ * \param task a #m_task_t to send on another location.
+ * \param alias the channel on which the agent should put this
+ task. This value has to be >=0 and < than the maximal number of
+ channels fixed with MSG_set_channel_number().
+ * \return the msg_comm_t communication.
+ */
+msg_comm_t MSG_task_isend(m_task_t task, const char *alias)
+{
+ simdata_task_t t_simdata = NULL;
+ m_process_t process = MSG_process_self();
+ msg_mailbox_t mailbox = MSG_mailbox_get_by_alias(alias);
+
+ CHECK_HOST();
+
+ /* FIXME: these functions are not tracable */
+
+ /* Prepare the task to send */
+ t_simdata = task->simdata;
+ t_simdata->sender = process;
+ t_simdata->source = MSG_host_self();
+
+ xbt_assert0(t_simdata->refcount == 1,
+ "This task is still being used somewhere else. You cannot send it now. Go fix your code!");
+
+ t_simdata->refcount++;
+ msg_global->sent_msg++;
+ process->simdata->waiting_task = task;
+
+ /* Send it by calling SIMIX network layer */
+
+ return SIMIX_req_comm_isend(mailbox, t_simdata->message_size,
+ t_simdata->rate, task, sizeof(void *),
+ &t_simdata->comm);
+}
+
+/** \ingroup msg_gos_functions
+ * \brief Listen on a channel for receiving a task from an asynchronous communication.
+ *
+ * It takes two parameters.
+ * \param task a memory location for storing a #m_task_t.
+ * \param alias the channel on which the agent should be
+ listening. This value has to be >=0 and < than the maximal
+ number of channels fixed with MSG_set_channel_number().
+ * \return the msg_comm_t communication.
+ */
+msg_comm_t MSG_task_irecv(m_task_t * task, const char *alias)
+{
+ smx_rdv_t rdv = MSG_mailbox_get_by_alias(alias);
+
+ CHECK_HOST();
+
+ /* FIXME: these functions are not tracable */
+
+ /* Sanity check */
+ xbt_assert0(task, "Null pointer for the task storage");
+
+ if (*task)
+ CRITICAL0
+ ("MSG_task_get() was asked to write in a non empty task struct.");
+
+ /* Try to receive it by calling SIMIX network layer */
+ return SIMIX_req_comm_irecv(rdv, task, NULL);
+}
+
+/** \ingroup msg_gos_functions
+ * \brief Test the status of a communication.
+ *
+ * It takes one parameter.
+ * \param comm the communication to test.
+ * \return the status of the communication:
+ * TRUE : the communication is completed
+ * FALSE: the communication is incompleted
+ * If the status is FALSE, don't forget to use MSG_process_sleep() after the test.
+ */
+int MSG_comm_test(msg_comm_t comm)
+{
+ return SIMIX_req_comm_test(comm);
+}
+
+/** \ingroup msg_gos_functions
+ * \brief After received TRUE to MSG_comm_test(), the communication must be destroyed.
+ *
+ * It takes one parameter.
+ * \param comm the communication to destroy.
+ */
+void MSG_comm_destroy(msg_comm_t comm)
+{
+ if (SIMIX_req_comm_get_src_proc(comm) != SIMIX_process_self()) {
+ m_task_t task;
+ task = (m_task_t) SIMIX_req_comm_get_src_buff(comm);
+ task->simdata->refcount--;
+ }
+ SIMIX_req_comm_destroy(comm);
+}
+
+/** \ingroup msg_gos_functions
+ * \brief Wait for the completion of a communication.
+ *
+ * It takes two parameters.
+ * \param comm the communication to wait.
+ * \param timeout Wait until the communication terminates or the timeout occurs
+ * \return MSG_error_t
+ */
+MSG_error_t MSG_comm_wait(msg_comm_t comm, double timeout)
+{
+ xbt_ex_t e;
+ MSG_error_t res = MSG_OK;
+ TRY {
+ SIMIX_req_comm_wait(comm, timeout);
+
+ if (SIMIX_req_comm_get_src_proc(comm) != SIMIX_process_self()) {
+ m_task_t task;
+ task = (m_task_t) SIMIX_req_comm_get_src_buff(comm);
+ task->simdata->refcount--;
+ }
+
+ /* FIXME: these functions are not tracable */
+ }
+ CATCH(e) {
+ switch (e.category) {
+ case host_error:
+ res = MSG_HOST_FAILURE;
+ break;
+ case network_error:
+ res = MSG_TRANSFER_FAILURE;
+ break;
+ case timeout_error:
+ res = MSG_TIMEOUT;
+ break;
+ default:
+ xbt_die(bprintf("Unhandled SIMIX network exception: %s", e.msg));
+ }
+ xbt_ex_free(e);
+ }
+ return res;
+}
+
+/** \ingroup msg_gos_functions
+* \brief This function is called by a sender and permit to wait for each communication
+*
+* It takes three parameters.
+* \param comm a vector of communication
+* \param nb_elem is the size of the comm vector
+* \param timeout for each call of MSG_comm_wait
+*/
+void MSG_comm_waitall(msg_comm_t * comm, int nb_elem, double timeout)
+{
+ int i = 0;
+ for (i = 0; i < nb_elem; i++) {
+ MSG_comm_wait(comm[i], timeout);
+ }
+}
+
+/** \ingroup msg_gos_functions
+* \brief This function wait for the first completed communication
+*
+* It takes on parameter.
+* \param comms a vector of communication
+* \return the position of the completed communication from the xbt_dynar_t.
+*/
+int MSG_comm_waitany(xbt_dynar_t comms)
+{
+ return SIMIX_req_comm_waitany(comms);
+}
+
+/** \ingroup msg_gos_functions
+* \brief This function wait for the first completed communication
+*
+* It takes on parameter.
+* \param comms a vector of communication
+* \return the position of the completed communication, if any, or -1 if none was completed
+*/
+int MSG_comm_testany(xbt_dynar_t comms)
+{
+ return SIMIX_req_comm_testany(comms);
+}
+
+m_task_t MSG_comm_get_task(msg_comm_t comm)
+{
+ xbt_assert0(comm, "Invalid parameters");
+ return (m_task_t) SIMIX_req_comm_get_src_buff(comm);
+}
/** \ingroup msg_gos_functions
* \brief Put a task on a channel of an host and waits for the end of the
* This function is used for describing the behavior of an agent. It
* takes three parameter.
* \param task a #m_task_t to send on another location. This task
- will not be usable anymore when the function will return. There is
- no automatic task duplication and you have to save your parameters
- before calling this function. Tasks are unique and once it has been
- sent to another location, you should not access it anymore. You do
- not need to call MSG_task_destroy() but to avoid using, as an
- effect of inattention, this task anymore, you definitely should
- renitialize it with #MSG_TASK_UNINITIALIZED. Note that this task
- can be transfered iff it has been correctly created with
- MSG_task_create().
+ will not be usable anymore when the function will return. There is
+ no automatic task duplication and you have to save your parameters
+ before calling this function. Tasks are unique and once it has been
+ sent to another location, you should not access it anymore. You do
+ not need to call MSG_task_destroy() but to avoid using, as an
+ effect of inattention, this task anymore, you definitely should
+ renitialize it with #MSG_TASK_UNINITIALIZED. Note that this task
+ can be transfered iff it has been correctly created with
+ MSG_task_create().
* \param dest the destination of the message
* \param channel the channel on which the agent should put this
- task. This value has to be >=0 and < than the maximal number of
- channels fixed with MSG_set_channel_number().
+ task. This value has to be >=0 and < than the maximal number of
+ channels fixed with MSG_set_channel_number().
* \return #MSG_FATAL if \a task is not properly initialized and
* #MSG_OK otherwise. Returns #MSG_HOST_FAILURE if the host on which
* this function was called was shut down. Returns
* This function is used for describing the behavior of an agent. It
* takes four parameter.
* \param task a #m_task_t to send on another location. This task
- will not be usable anymore when the function will return. There is
- no automatic task duplication and you have to save your parameters
- before calling this function. Tasks are unique and once it has been
- sent to another location, you should not access it anymore. You do
- not need to call MSG_task_destroy() but to avoid using, as an
- effect of inattention, this task anymore, you definitely should
- renitialize it with #MSG_TASK_UNINITIALIZED. Note that this task
- can be transfered iff it has been correctly created with
- MSG_task_create().
+ will not be usable anymore when the function will return. There is
+ no automatic task duplication and you have to save your parameters
+ before calling this function. Tasks are unique and once it has been
+ sent to another location, you should not access it anymore. You do
+ not need to call MSG_task_destroy() but to avoid using, as an
+ effect of inattention, this task anymore, you definitely should
+ renitialize it with #MSG_TASK_UNINITIALIZED. Note that this task
+ can be transfered iff it has been correctly created with
+ MSG_task_create().
* \param dest the destination of the message
* \param channel the channel on which the agent should put this
- task. This value has to be >=0 and < than the maximal number of
- channels fixed with MSG_set_channel_number().
+ task. This value has to be >=0 and < than the maximal number of
+ channels fixed with MSG_set_channel_number().
* \param timeout the maximum time to wait for a task before giving
- up. In such a case, #MSG_TRANSFER_FAILURE will be returned, \a task
- will not be modified
+ up. In such a case, #MSG_TRANSFER_FAILURE will be returned, \a task
+ will not be modified
* \return #MSG_FATAL if \a task is not properly initialized and
- #MSG_OK otherwise. Returns #MSG_HOST_FAILURE if the host on which
- this function was called was shut down. Returns
- #MSG_TRANSFER_FAILURE if the transfer could not be properly done
- (network failure, dest failure, timeout...)
+#MSG_OK otherwise. Returns #MSG_HOST_FAILURE if the host on which
+this function was called was shut down. Returns
+#MSG_TRANSFER_FAILURE if the transfer could not be properly done
+(network failure, dest failure, timeout...)
*/
MSG_error_t
-MSG_task_put_with_timeout(m_task_t task, m_host_t dest, m_channel_t channel,
- double timeout)
+MSG_task_put_with_timeout(m_task_t task, m_host_t dest,
+ m_channel_t channel, double timeout)
{
xbt_assert1((channel >= 0)
&& (channel < msg_global->max_channel), "Invalid channel %d",
channel);
+ DEBUG1("MSG_task_put_with_timout: Trying to send a task to '%s'", dest->name);
return
- MSG_mailbox_put_with_timeout(MSG_mailbox_get_by_channel(dest, channel),
- task, timeout);
+ MSG_mailbox_put_with_timeout(MSG_mailbox_get_by_channel
+ (dest, channel), task, timeout);
}
MSG_error_t MSG_task_send(m_task_t task, const char *alias)
{
+ DEBUG1("MSG_task_send: Trying to send a message on mailbox '%s'", alias);
return MSG_task_send_with_timeout(task, alias, -1);
}
MSG_error_t
-MSG_task_send_with_timeout(m_task_t task, const char *alias, double timeout)
+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);
+ return MSG_mailbox_put_with_timeout(MSG_mailbox_get_by_alias(alias),
+ task, timeout);
}
int MSG_task_listen(const char *alias)
*
* It takes one parameter.
* \param channel the channel on which the agent should be
- listening. This value has to be >=0 and < than the maximal
- number of channels fixed with MSG_set_channel_number().
+ listening. This value has to be >=0 and < than the maximal
+ number of channels fixed with MSG_set_channel_number().
* \return 1 if there is a pending communication and 0 otherwise
*/
int MSG_task_Iprobe(m_channel_t channel)
CHECK_HOST();
return
- !MSG_mailbox_is_empty(MSG_mailbox_get_by_channel
- (MSG_host_self(), channel));
+ !MSG_mailbox_is_empty(MSG_mailbox_get_by_channel
+ (MSG_host_self(), channel));
}
/** \ingroup msg_gos_functions
* \brief Return the number of tasks waiting to be received on a \a
- channel and sent by \a host.
+ channel and sent by \a host.
*
* It takes two parameters.
* \param channel the channel on which the agent should be
- listening. This value has to be >=0 and < than the maximal
- number of channels fixed with MSG_set_channel_number().
+ listening. This value has to be >=0 and < than the maximal
+ number of channels fixed with MSG_set_channel_number().
* \param host the host that is to be watched.
* \return the number of tasks waiting to be received on \a channel
- and sent by \a host.
+ and sent by \a host.
*/
int MSG_task_probe_from_host(int channel, m_host_t host)
{
CHECK_HOST();
return
- MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_channel
- (MSG_host_self(), channel),
- host);
+ MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_channel
+ (MSG_host_self(), channel),
+ host);
}
CHECK_HOST();
return
- MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_alias(alias),
- host);
+ MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_alias
+ (alias), host);
}
/** \ingroup msg_gos_functions
*
* It takes one parameter.
* \param channel the channel on which the agent should be
- listening. This value has to be >=0 and < than the maximal
- number of channels fixed with MSG_set_channel_number().
+ listening. This value has to be >=0 and < than the maximal
+ number of channels fixed with MSG_set_channel_number().
* \return -1 if there is no pending communication and the PID of the process who sent it otherwise
*/
int MSG_task_probe_from(m_channel_t channel)
CHECK_HOST();
- if (NULL == (task = MSG_mailbox_get_head(MSG_mailbox_get_by_alias(alias))))
+ 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_gos_functions
- * \brief Wait for at most \a max_duration second for a task reception
- on \a channel.
-
- * \a PID is updated with the PID of the first process that triggered this event if any.
- *
- * It takes three parameters:
- * \param channel the channel on which the agent should be
- listening. This value has to be >=0 and < than the maximal.
- number of channels fixed with MSG_set_channel_number().
- * \param PID a memory location for storing an int.
- * \param timeout the maximum time to wait for a task before
- giving up. In the case of a reception, *\a PID will be updated
- with the PID of the first process to send a task.
- * \return #MSG_HOST_FAILURE if the host is shut down in the meantime
- and #MSG_OK otherwise.
- */
-MSG_error_t
-MSG_channel_select_from(m_channel_t channel, double timeout, int *PID)
-{
- m_host_t h = NULL;
- simdata_host_t h_simdata = NULL;
- m_task_t t;
- int first_time = 1;
- smx_cond_t cond;
- msg_mailbox_t mailbox;
-
- xbt_assert1((channel >= 0)
- && (channel < msg_global->max_channel), "Invalid channel %d",
- channel);
-
- if (PID) {
- *PID = -1;
- }
-
- if (timeout == 0.0) {
- *PID = MSG_task_probe_from(channel);
- MSG_RETURN(MSG_OK);
- } else {
- CHECK_HOST();
- h = MSG_host_self();
- h_simdata = h->simdata;
-
- mailbox = MSG_mailbox_get_by_channel(MSG_host_self(), channel);
-
- while (MSG_mailbox_is_empty(mailbox)) {
- if (timeout > 0) {
- if (!first_time) {
- MSG_RETURN(MSG_OK);
- }
- }
-
- SIMIX_mutex_lock(h_simdata->mutex);
-
- xbt_assert1(!MSG_mailbox_get_cond(mailbox),
- "A process is already blocked on this channel %d", channel);
-
- cond = SIMIX_cond_init();
-
- MSG_mailbox_set_cond(mailbox, cond);
-
- if (timeout > 0) {
- SIMIX_cond_wait_timeout(cond, h_simdata->mutex, timeout);
- } else {
- SIMIX_cond_wait(cond, h_simdata->mutex);
- }
-
- SIMIX_cond_destroy(cond);
- SIMIX_mutex_unlock(h_simdata->mutex);
-
- if (SIMIX_host_get_state(h_simdata->smx_host) == 0) {
- MSG_RETURN(MSG_HOST_FAILURE);
- }
-
- MSG_mailbox_set_cond(mailbox, NULL);
- first_time = 0;
- }
-
- if (NULL == (t = MSG_mailbox_get_head(mailbox)))
- MSG_RETURN(MSG_OK);
-
-
- if (PID) {
- *PID = MSG_process_get_PID(t->simdata->sender);
- }
-
- MSG_RETURN(MSG_OK);
- }
-}
-
-
-MSG_error_t MSG_alias_select_from(const char *alias, double timeout, int *PID)
-{
- m_host_t h = NULL;
- simdata_host_t h_simdata = NULL;
- m_task_t t;
- int first_time = 1;
- smx_cond_t cond;
- msg_mailbox_t mailbox;
-
- if (PID) {
- *PID = -1;
- }
-
- if (timeout == 0.0) {
- *PID = MSG_task_listen_from(alias);
- MSG_RETURN(MSG_OK);
- } else {
- CHECK_HOST();
- h = MSG_host_self();
- h_simdata = h->simdata;
-
- DEBUG2("Probing on alias %s (%s)", alias, h->name);
-
- mailbox = MSG_mailbox_get_by_alias(alias);
-
- while (MSG_mailbox_is_empty(mailbox)) {
- if (timeout > 0) {
- if (!first_time) {
- MSG_RETURN(MSG_OK);
- }
- }
-
- SIMIX_mutex_lock(h_simdata->mutex);
-
- xbt_assert1(!MSG_mailbox_get_cond(mailbox),
- "A process is already blocked on this alias %s", alias);
-
- cond = SIMIX_cond_init();
-
- MSG_mailbox_set_cond(mailbox, cond);
-
- if (timeout > 0) {
- SIMIX_cond_wait_timeout(cond, h_simdata->mutex, timeout);
- } else {
- SIMIX_cond_wait(cond, h_simdata->mutex);
- }
-
- SIMIX_cond_destroy(cond);
- SIMIX_mutex_unlock(h_simdata->mutex);
-
- if (SIMIX_host_get_state(h_simdata->smx_host) == 0) {
- MSG_RETURN(MSG_HOST_FAILURE);
- }
-
- MSG_mailbox_set_cond(mailbox, NULL);
- first_time = 0;
- }
-
- if (NULL == (t = MSG_mailbox_get_head(mailbox)))
- MSG_RETURN(MSG_OK);
-
-
- if (PID) {
- *PID = MSG_process_get_PID(t->simdata->sender);
- }
-
- MSG_RETURN(MSG_OK);
- }
-}
