-/* $Id$ */
-
-/* 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"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_gos, msg,
- "Logging specific to MSG (gos)");
+ "Logging specific to MSG (gos)");
/** \ingroup msg_gos_functions
*
* \brief Return the last value returned by a MSG function (except
* MSG_get_errno...).
*/
-MSG_error_t
-MSG_get_errno(void)
+MSG_error_t MSG_get_errno(void)
{
- return PROCESS_GET_ERRNO();
+ return PROCESS_GET_ERRNO();
}
/** \ingroup msg_gos_functions
* 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.
*/
-MSG_error_t
-MSG_task_execute(m_task_t task)
-{
- simdata_task_t simdata = NULL;
- m_process_t self = MSG_process_self();
- CHECK_HOST();
-
- simdata = task->simdata;
- xbt_assert0((!simdata->compute) && (task->simdata->refcount == 1),"This task is executed somewhere else. Go fix your code!");
-
- DEBUG1("Computing on %s", MSG_process_self()->simdata->m_host->name);
-
- 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);
-
- self->simdata->waiting_task = task;
- SIMIX_register_action_to_condition(simdata->compute, simdata->cond);
- SIMIX_cond_wait(simdata->cond, simdata->mutex);
- SIMIX_unregister_action_to_condition(simdata->compute, simdata->cond);
- self->simdata->waiting_task = NULL;
-
- SIMIX_mutex_unlock(simdata->mutex);
- simdata->refcount --;
-
- if (SIMIX_action_get_state(task->simdata->compute) == SURF_ACTION_DONE)
- {
- /* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */
- SIMIX_action_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)
- {
- /* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */
- SIMIX_action_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);
- simdata->comm = NULL;
- simdata->compute = NULL;
- MSG_RETURN(MSG_TASK_CANCELLED);
- }
+MSG_error_t MSG_task_execute(m_task_t task)
+{
+ simdata_task_t simdata = NULL;
+ m_process_t self = MSG_process_self();
+ e_smx_state_t comp_state;
+ CHECK_HOST();
+
+ 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->isused == 0),
+ "This task is executed somewhere else. Go fix your code! %d",
+ task->simdata->isused);
+
+ 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);
+#endif
+ return MSG_OK;
+ }
+ simdata->isused=1;
+ simdata->compute =
+ SIMIX_req_host_execute(task->name, SIMIX_host_self(),
+ simdata->computation_amount,
+ simdata->priority);
+#ifdef HAVE_TRACING
+ SIMIX_req_set_category(simdata->compute, task->category);
+#endif
+
+ self->simdata->waiting_action = simdata->compute;
+ comp_state = SIMIX_req_host_execution_wait(simdata->compute);
+ self->simdata->waiting_action = NULL;
+
+ simdata->isused=0;
+
+ DEBUG2("Execution task '%s' finished in state %d", task->name, comp_state);
+ if (comp_state == SIMIX_DONE) {
+ /* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */
+ simdata->computation_amount = 0.0;
+ simdata->comm = NULL;
+ simdata->compute = NULL;
+#ifdef HAVE_TRACING
+ TRACE_msg_task_execute_end(task);
+#endif
+ MSG_RETURN(MSG_OK);
+ } 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 */
+ simdata->comm = NULL;
+ simdata->compute = NULL;
+#ifdef HAVE_TRACING
+ 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 */
+ simdata->comm = NULL;
+ simdata->compute = NULL;
+#ifdef HAVE_TRACING
+ TRACE_msg_task_execute_end(task);
+#endif
+ MSG_RETURN(MSG_TASK_CANCELLED);
+ }
}
/** \ingroup m_task_management
* \brief Creates a new #m_task_t (a parallel one....).
*
- * A constructor for #m_task_t taking six arguments and returning the
- corresponding object.
+ * A constructor for #m_task_t taking six arguments and returning the
+ 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.
*/
-m_task_t
-MSG_parallel_task_create(const char *name,int host_nb, const m_host_t * host_list, double *computation_amount, double *communication_amount, void *data)
-{
- int i;
- simdata_task_t simdata = xbt_new0(s_simdata_task_t, 1);
- m_task_t task = xbt_new0(s_m_task_t, 1);
- task->simdata = simdata;
-
- /* Task structure */
- task->name = xbt_strdup(name);
- task->data = data;
-
- /* 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->refcount = 1;
- simdata->sender = NULL;
- simdata->receiver = NULL;
- simdata->source = NULL;
-
- simdata->host_nb = host_nb;
- simdata->host_list = xbt_new0(smx_host_t, host_nb);
- simdata->comp_amount = computation_amount;
- simdata->comm_amount = communication_amount;
-
- for (i = 0; i < host_nb; i++)
- simdata->host_list[i] = host_list[i]->simdata->smx_host;
-
- return task;
-}
-
-MSG_error_t
-MSG_parallel_task_execute(m_task_t task)
-{
- simdata_task_t simdata = NULL;
- m_process_t self = MSG_process_self();
- CHECK_HOST();
-
- simdata = task->simdata;
-
- xbt_assert0((!simdata->compute) && (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.");
-
- DEBUG1("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, simdata->comm_amount, 1.0, -1.0);
-
- self->simdata->waiting_task = task;
- SIMIX_register_action_to_condition(simdata->compute, simdata->cond);
- SIMIX_cond_wait(simdata->cond, simdata->mutex);
- SIMIX_unregister_action_to_condition(simdata->compute, simdata->cond);
- self->simdata->waiting_task = NULL;
-
-
- SIMIX_mutex_unlock(simdata->mutex);
- simdata->refcount --;
-
- if (SIMIX_action_get_state(task->simdata->compute) == SURF_ACTION_DONE)
- {
- /* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */
- SIMIX_action_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)
- {
- /* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */
- SIMIX_action_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);
- simdata->comm = NULL;
- simdata->compute = NULL;
- MSG_RETURN(MSG_TASK_CANCELLED);
- }
+m_task_t
+MSG_parallel_task_create(const char *name, int host_nb,
+ const m_host_t * host_list,
+ double *computation_amount,
+ double *communication_amount, void *data)
+{
+ int i;
+ simdata_task_t simdata = xbt_new0(s_simdata_task_t, 1);
+ m_task_t task = xbt_new0(s_m_task_t, 1);
+ task->simdata = simdata;
+
+ /* Task structure */
+ task->name = xbt_strdup(name);
+ task->data = data;
+
+ /* Simulator Data */
+ simdata->computation_amount = 0;
+ simdata->message_size = 0;
+ simdata->compute = NULL;
+ simdata->comm = NULL;
+ simdata->rate = -1.0;
+ simdata->isused = 0;
+ simdata->sender = NULL;
+ simdata->receiver = NULL;
+ simdata->source = NULL;
+
+ simdata->host_nb = host_nb;
+ simdata->host_list = xbt_new0(smx_host_t, host_nb);
+ simdata->comp_amount = computation_amount;
+ simdata->comm_amount = communication_amount;
+
+ for (i = 0; i < host_nb; i++)
+ simdata->host_list[i] = host_list[i]->simdata->smx_host;
+
+ return task;
+}
+
+MSG_error_t MSG_parallel_task_execute(m_task_t task)
+{
+ simdata_task_t simdata = NULL;
+ e_smx_state_t comp_state;
+ m_process_t self = MSG_process_self();
+ CHECK_HOST();
+ simdata = task->simdata;
+
+ xbt_assert0((!simdata->compute)
+ && (task->simdata->isused == 0),
+ "This task is executed somewhere else. Go fix your code!");
+
+ xbt_assert0(simdata->host_nb,
+ "This is not a parallel task. Go to hell.");
+
+ DEBUG1("Parallel computing on %s", MSG_process_self()->simdata->m_host->name);
+
+ simdata->isused=1;
+
+ simdata->compute =
+ 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;
+ comp_state = SIMIX_req_host_execution_wait(simdata->compute);
+ self->simdata->waiting_action = NULL;
+
+ DEBUG2("Finished waiting for execution of action %p, state = %d", simdata->compute, comp_state);
+
+ simdata->isused=0;
+
+ if (comp_state == SIMIX_DONE) {
+ /* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */
+ simdata->computation_amount = 0.0;
+ simdata->comm = NULL;
+ simdata->compute = NULL;
+ MSG_RETURN(MSG_OK);
+ } 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 */
+ 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 */
+ simdata->comm = NULL;
+ simdata->compute = NULL;
+ MSG_RETURN(MSG_TASK_CANCELLED);
+ }
}
*
* \param nb_sec a number of second
*/
-MSG_error_t
-MSG_process_sleep(double nb_sec)
-{
- smx_action_t act_sleep;
- m_process_t proc = MSG_process_self();
- smx_mutex_t mutex;
- smx_cond_t cond;
-
- /* 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();
-
- SIMIX_register_action_to_condition(act_sleep, cond);
- SIMIX_cond_wait(cond, mutex);
- 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_CPU_OFF)
- {
- SIMIX_action_destroy(act_sleep);
- MSG_RETURN(MSG_HOST_FAILURE);
- }
- }
- else
- {
- SIMIX_action_destroy(act_sleep);
- MSG_RETURN(MSG_HOST_FAILURE);
- }
-
- MSG_RETURN(MSG_OK);
-}
-
-/** \ingroup msg_gos_functions
- * \brief Return the number of MSG tasks currently running on
- * the host of the current running process.
- */
-static int
-MSG_get_msgload(void)
+MSG_error_t MSG_process_sleep(double nb_sec)
{
- xbt_die("not implemented yet");
- return 0;
-}
+ e_smx_state_t state;
+ /*m_process_t proc = MSG_process_self();*/
+
+#ifdef HAVE_TRACING
+ TRACE_msg_process_sleep_in(MSG_process_self());
+#endif
+ /* create action to 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) {
+#ifdef HAVE_TRACING
+ TRACE_msg_process_sleep_out(MSG_process_self());
+#endif
+ MSG_RETURN(MSG_OK);
+ } else {
+#ifdef HAVE_TRACING
+ TRACE_msg_process_sleep_out(MSG_process_self());
+#endif
+ MSG_RETURN(MSG_HOST_FAILURE);
+ }
+}
/** \ingroup msg_gos_functions
* \brief Listen on \a channel and waits for receiving a task from \a host.
*
* 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_error_t
MSG_task_get_from_host(m_task_t * task, m_channel_t channel, m_host_t host)
{
- return MSG_task_get_ext(task, channel, -1, host);
+ return MSG_task_get_ext(task, channel, -1, host);
}
/** \ingroup msg_gos_functions
*
* 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.
*/
-MSG_error_t
-MSG_task_get(m_task_t * task, m_channel_t channel)
+MSG_error_t MSG_task_get(m_task_t * task, m_channel_t channel)
{
- return MSG_task_get_with_timeout(task, channel, -1);
+ return MSG_task_get_with_timeout(task, channel, -1);
}
/** \ingroup msg_gos_functions
*
* 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, double max_duration)
+MSG_error_t
+MSG_task_get_with_timeout(m_task_t * task, m_channel_t channel,
+ double max_duration)
{
return MSG_task_get_ext(task, channel, max_duration, NULL);
}
* by an agent for handling some task.
*/
-MSG_error_t
-MSG_task_get_ext(m_task_t * task, m_channel_t channel, double timeout,m_host_t host)
+MSG_error_t
+MSG_task_get_ext(m_task_t * task, m_channel_t channel, double timeout,
+ m_host_t host)
+{
+ xbt_assert1((channel >= 0)
+ && (channel < msg_global->max_channel), "Invalid channel %d",
+ channel);
+
+ return
+ 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)
{
- xbt_assert1((channel >= 0) && (channel < msg_global->max_channel), "Invalid channel %d",channel);
-
- return MSG_mailbox_get_task_ext(MSG_mailbox_get_by_channel(MSG_host_self(), channel), task, host, timeout);
+ return MSG_task_receive_ext(task, alias, -1, host);
}
-MSG_error_t
-MSG_task_receive_from_host(m_task_t * task, const char* alias, m_host_t host)
+MSG_error_t MSG_task_receive(m_task_t * task, const char *alias)
{
- return MSG_task_receive_ext(task, alias, -1, host);
+ return MSG_task_receive_with_timeout(task, alias, -1);
}
-MSG_error_t
-MSG_task_receive(m_task_t * task, const char* alias)
+MSG_error_t
+MSG_task_receive_with_timeout(m_task_t * task, const char *alias,
+ double timeout)
{
- return MSG_task_receive_with_timeout(task, alias, -1);
+ return MSG_task_receive_ext(task, alias, timeout, NULL);
}
-MSG_error_t
-MSG_task_receive_with_timeout(m_task_t * task, const char* alias, double timeout)
+MSG_error_t
+MSG_task_receive_ext(m_task_t * task, const char *alias, double timeout,
+ m_host_t host)
{
- return MSG_task_receive_ext(task, alias, timeout, NULL);
+ 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);
}
-MSG_error_t
-MSG_task_receive_ext(m_task_t* task, const char* alias, double timeout, m_host_t host)
+/** \ingroup msg_gos_functions
+ * \brief Sends a task on a mailbox.
+ *
+ * This is a non blocking function: use MSG_comm_wait() or MSG_comm_test()
+ * to end the communication.
+ *
+ * \param task a #m_task_t to send on another location.
+ * \param alias name of the mailbox to sent the task to
+ * \return the msg_comm_t communication created
+ */
+msg_comm_t MSG_task_isend(m_task_t task, const char *alias)
{
- return MSG_mailbox_get_task_ext(MSG_mailbox_get_by_alias(alias), task, host, timeout);
+ 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 traceable */
+
+ /* Prepare the task to send */
+ t_simdata = task->simdata;
+ t_simdata->sender = process;
+ t_simdata->source = MSG_host_self();
+
+ xbt_assert0(t_simdata->isused == 0,
+ "This task is still being used somewhere else. You cannot send it now. Go fix your code!");
+
+ t_simdata->isused = 1;
+ msg_global->sent_msg++;
+
+ /* Send it by calling SIMIX network layer */
+ msg_comm_t comm = xbt_new0(s_msg_comm_t, 1);
+ comm->task_sent = task;
+ comm->task_received = NULL;
+ comm->status = MSG_OK;
+ comm->s_comm =
+ SIMIX_req_comm_isend(mailbox, t_simdata->message_size,
+ t_simdata->rate, task, sizeof(void *), NULL, NULL, 0);
+ t_simdata->comm = comm->s_comm; /* FIXME: is the field t_simdata->comm still useful? */
+
+ return comm;
}
+/** \ingroup msg_gos_functions
+ * \brief Sends a task on a mailbox.
+ *
+ * This is a non blocking detached send function.
+ * Think of it as a best effort send. The communication
+ * object will be destroyed by the receiver (if any).
+ *
+ * \param task a #m_task_t to send on another location.
+ * \param alias name of the mailbox to sent the task to
+ * \param cleanup a function to destroy the task if the
+ * communication fails (if NULL, MSG_task_destroy() will
+ * be used by default)
+ */
+void MSG_task_dsend(m_task_t task, const char *alias, void_f_pvoid_t cleanup)
+{
+ 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();
+
+ if (cleanup == NULL) {
+ cleanup = (void_f_pvoid_t) MSG_task_destroy;
+ }
+
+ /* FIXME: these functions are not traceable */
+
+ /* Prepare the task to send */
+ t_simdata = task->simdata;
+ t_simdata->sender = process;
+ t_simdata->source = MSG_host_self();
+
+ xbt_assert0(t_simdata->isused == 0,
+ "This task is still being used somewhere else. You cannot send it now. Go fix your code!");
+
+ t_simdata->isused = 1;
+ msg_global->sent_msg++;
+
+ /* Send it by calling SIMIX network layer */
+ SIMIX_req_comm_isend(mailbox, t_simdata->message_size,
+ t_simdata->rate, task, sizeof(void *), NULL, cleanup, 1);
+}
+
+/** \ingroup msg_gos_functions
+ * \brief Starts listening for receiving a task from an asynchronous communication.
+ *
+ * This is a non blocking function: use MSG_comm_wait() or MSG_comm_test()
+ * to end the communication.
+ *
+ * \param task a memory location for storing a #m_task_t.
+ * \param name of the mailbox to receive the task on
+ * \return the msg_comm_t communication created
+ */
+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 */
+ msg_comm_t comm = xbt_new0(s_msg_comm_t, 1);
+ comm->task_sent = NULL;
+ comm->task_received = task;
+ comm->status = MSG_OK;
+ comm->s_comm = SIMIX_req_comm_irecv(rdv, task, NULL, NULL, NULL);
+
+ return comm;
+}
+
+/** \ingroup msg_gos_functions
+ * \brief Checks whether a communication is done, and if yes, finalizes it.
+ * \param comm the communication to test
+ * \return TRUE if the communication is finished
+ * (but it may have failed, use MSG_comm_get_status() to know its status)
+ * or FALSE if the communication is not finished yet
+ * If the status is FALSE, don't forget to use MSG_process_sleep() after the test.
+ */
+int MSG_comm_test(msg_comm_t comm)
+{
+ xbt_ex_t e;
+ int finished = 0;
+ TRY {
+ finished = SIMIX_req_comm_test(comm->s_comm);
+ }
+ CATCH(e) {
+ switch (e.category) {
+
+ case host_error:
+ comm->status = MSG_HOST_FAILURE;
+ finished = 1;
+ break;
+
+ case network_error:
+ comm->status = MSG_TRANSFER_FAILURE;
+ finished = 1;
+ break;
+
+ case timeout_error:
+ comm->status = MSG_TIMEOUT;
+ finished = 1;
+ break;
+
+ default:
+ RETHROW;
+ }
+ xbt_ex_free(e);
+ }
+
+ return finished;
+}
+
+/** \ingroup msg_gos_functions
+ * \brief This function checks if a communication is finished.
+ * \param comms a vector of communications
+ * \return the position of the finished communication if any
+ * (but it may have failed, use MSG_comm_get_status() to know its status),
+ * or -1 if none is finished
+ */
+int MSG_comm_testany(xbt_dynar_t comms)
+{
+ xbt_ex_t e;
+ int finished_index = -1;
+
+ /* create the equivalent dynar with SIMIX objects */
+ xbt_dynar_t s_comms = xbt_dynar_new(sizeof(smx_action_t), NULL);
+ msg_comm_t comm;
+ unsigned int cursor;
+ xbt_dynar_foreach(comms, cursor, comm) {
+ xbt_dynar_push(s_comms, &comm->s_comm);
+ }
+
+ MSG_error_t status = MSG_OK;
+ TRY {
+ finished_index = SIMIX_req_comm_testany(s_comms);
+ }
+ CATCH(e) {
+ switch (e.category) {
+
+ case host_error:
+ finished_index = e.value;
+ status = MSG_HOST_FAILURE;
+ break;
+
+ case network_error:
+ finished_index = e.value;
+ status = MSG_TRANSFER_FAILURE;
+ break;
+
+ case timeout_error:
+ finished_index = e.value;
+ status = MSG_TIMEOUT;
+ break;
+
+ default:
+ RETHROW;
+ }
+ xbt_ex_free(e);
+ }
+ xbt_dynar_free(&s_comms);
+
+ if (finished_index != -1) {
+ comm = xbt_dynar_get_as(comms, finished_index, msg_comm_t);
+ /* the communication is finished */
+ comm->status = status;
+ }
+
+ return finished_index;
+}
+
+/** \ingroup msg_gos_functions
+ * \brief Destroys a communication.
+ * \param comm the communication to destroy.
+ */
+void MSG_comm_destroy(msg_comm_t comm)
+{
+ if (comm->task_received != NULL
+ && *comm->task_received != NULL
+ && MSG_comm_get_status(comm) == MSG_OK) {
+ (*comm->task_received)->simdata->isused = 0;
+ }
+
+ /* FIXME auto-destroy comms from SIMIX to avoid this request */
+ SIMIX_req_comm_destroy(comm->s_comm);
+ free(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;
+ TRY {
+ SIMIX_req_comm_wait(comm->s_comm, timeout);
+
+ if (comm->task_received != NULL) {
+ /* I am the receiver */
+ (*comm->task_received)->simdata->isused = 0;
+ }
+
+ /* FIXME: these functions are not traceable */
+ }
+ CATCH(e) {
+ switch (e.category) {
+ case host_error:
+ comm->status = MSG_HOST_FAILURE;
+ break;
+ case network_error:
+ comm->status = MSG_TRANSFER_FAILURE;
+ break;
+ case timeout_error:
+ comm->status = MSG_TIMEOUT;
+ break;
+ default:
+ RETHROW;
+ }
+ xbt_ex_free(e);
+ }
+
+ return comm->status;
+}
+
+/** \ingroup msg_gos_functions
+* \brief This function is called by a sender and permit to wait for each communication
+*
+* \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 waits for the first communication finished in a list.
+ * \param comms a vector of communications
+ * \return the position of the first finished communication
+ * (but it may have failed, use MSG_comm_get_status() to know its status)
+ */
+int MSG_comm_waitany(xbt_dynar_t comms)
+{
+ xbt_ex_t e;
+ int finished_index = -1;
+
+ /* create the equivalent dynar with SIMIX objects */
+ xbt_dynar_t s_comms = xbt_dynar_new(sizeof(smx_action_t), NULL);
+ msg_comm_t comm;
+ unsigned int cursor;
+ xbt_dynar_foreach(comms, cursor, comm) {
+ xbt_dynar_push(s_comms, &comm->s_comm);
+ }
+
+ MSG_error_t status = MSG_OK;
+ TRY {
+ finished_index = SIMIX_req_comm_waitany(s_comms);
+ }
+ CATCH(e) {
+ switch (e.category) {
+
+ case host_error:
+ finished_index = e.value;
+ status = MSG_HOST_FAILURE;
+ break;
+
+ case network_error:
+ finished_index = e.value;
+ status = MSG_TRANSFER_FAILURE;
+ break;
+
+ case timeout_error:
+ finished_index = e.value;
+ status = MSG_TIMEOUT;
+ break;
+
+ default:
+ RETHROW;
+ }
+ xbt_ex_free(e);
+ }
+
+ xbt_assert0(finished_index != -1, "WaitAny returned -1");
+ xbt_dynar_free(&s_comms);
+
+ comm = xbt_dynar_get_as(comms, finished_index, msg_comm_t);
+ /* the communication is finished */
+ comm->status = status;
+
+ return finished_index;
+}
+
+/**
+ * \ingroup msg_gos_functions
+ * \brief Returns the error (if any) that occured during a finished communication.
+ * \param comm a finished communication
+ * \return the status of the communication, or MSG_OK if no error occured
+ * during the communication
+ */
+MSG_error_t MSG_comm_get_status(msg_comm_t comm) {
+
+ return comm->status;
+}
+
+m_task_t MSG_comm_get_task(msg_comm_t comm)
+{
+ xbt_assert0(comm, "Invalid parameter");
+
+ return comm->task_received ? *comm->task_received : comm->task_sent;
+}
/** \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
* #MSG_TRANSFER_FAILURE if the transfer could not be properly done
* (network failure, dest failure)
*/
-MSG_error_t
-MSG_task_put(m_task_t task, m_host_t dest, m_channel_t channel)
+MSG_error_t MSG_task_put(m_task_t task, m_host_t dest, m_channel_t channel)
{
- return MSG_task_put_with_timeout(task, dest, channel, -1.0);
+ return MSG_task_put_with_timeout(task, dest, channel, -1.0);
}
/** \ingroup msg_gos_functions
- * \brief Does exactly the same as MSG_task_put but with a bounded transmition
+ * \brief Does exactly the same as MSG_task_put but with a bounded transmition
* rate.
*
* \sa MSG_task_put
*/
MSG_error_t
-MSG_task_put_bounded(m_task_t task, m_host_t dest, m_channel_t channel, double maxrate)
+MSG_task_put_bounded(m_task_t task, m_host_t dest, m_channel_t channel,
+ double maxrate)
{
- task->simdata->rate = maxrate;
- return MSG_task_put(task, dest, channel);
+ task->simdata->rate = maxrate;
+ return MSG_task_put(task, dest, channel);
}
/** \ingroup msg_gos_functions \brief Put a task on a channel of an
* 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_error_t
+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);
-
- return MSG_mailbox_put_with_timeout(MSG_mailbox_get_by_channel(dest, channel), task, 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_error_t
-MSG_task_send(m_task_t task,const char* alias)
+MSG_error_t MSG_task_send(m_task_t task, const char *alias)
{
- return MSG_task_send_with_timeout(task, alias, -1);
+ 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_bounded(m_task_t task, const char* alias, double maxrate)
+MSG_error_t
+MSG_task_send_bounded(m_task_t task, const char *alias, double maxrate)
{
- task->simdata->rate = maxrate;
- return MSG_task_send(task, alias);
+ task->simdata->rate = maxrate;
+ return MSG_task_send(task, alias);
}
-
-MSG_error_t
-MSG_task_send_with_timeout(m_task_t task, const char* alias, double timeout)
+
+MSG_error_t
+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)
+int MSG_task_listen(const char *alias)
{
- CHECK_HOST();
-
- return !MSG_mailbox_is_empty(MSG_mailbox_get_by_alias(alias));
+ CHECK_HOST();
+
+ return !MSG_mailbox_is_empty(MSG_mailbox_get_by_alias(alias));
}
/** \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 a pending communication and 0 otherwise
*/
-int
-MSG_task_Iprobe(m_channel_t channel)
+int MSG_task_Iprobe(m_channel_t channel)
{
- xbt_assert1((channel >= 0) && (channel < msg_global->max_channel), "Invalid channel %d", channel);
-
+ xbt_assert1((channel >= 0)
+ && (channel < msg_global->max_channel), "Invalid channel %d",
+ channel);
+
CHECK_HOST();
-
- return !MSG_mailbox_is_empty(MSG_mailbox_get_by_channel(MSG_host_self(), channel));
+
+ return
+ !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)
+int MSG_task_probe_from_host(int channel, m_host_t host)
{
- xbt_assert1((channel >= 0) && (channel < msg_global->max_channel), "Invalid channel %d", channel);
-
- CHECK_HOST();
-
- return MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_channel(MSG_host_self(), channel),host);
-
+ xbt_assert1((channel >= 0)
+ && (channel < msg_global->max_channel), "Invalid channel %d",
+ channel);
+
+ CHECK_HOST();
+
+ return
+ MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_channel
+ (MSG_host_self(), channel),
+ host);
+
}
-int
-MSG_task_listen_from_host(const char* alias, m_host_t host)
+int MSG_task_listen_from_host(const char *alias, m_host_t host)
{
- CHECK_HOST();
-
- return MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_alias(alias),host);
+ CHECK_HOST();
+
+ return
+ 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)
+int MSG_task_probe_from(m_channel_t channel)
{
- m_task_t task;
+ m_task_t task;
- CHECK_HOST();
-
- xbt_assert1((channel >= 0) && (channel < msg_global->max_channel), "Invalid channel %d", channel);
+ CHECK_HOST();
+
+ xbt_assert1((channel >= 0)
+ && (channel < msg_global->max_channel), "Invalid channel %d",
+ channel);
- if(NULL == (task = MSG_mailbox_get_head(MSG_mailbox_get_by_channel(MSG_host_self(), channel))))
- return -1;
+ if (NULL ==
+ (task =
+ MSG_mailbox_get_head(MSG_mailbox_get_by_channel
+ (MSG_host_self(), channel))))
+ return -1;
- return MSG_process_get_PID(task->simdata->sender);
+ return MSG_process_get_PID(task->simdata->sender);
}
-int
-MSG_task_listen_from(const char* alias)
+int MSG_task_listen_from(const char *alias)
{
- m_task_t task;
+ m_task_t task;
- CHECK_HOST();
+ CHECK_HOST();
- if(NULL == (task = MSG_mailbox_get_head(MSG_mailbox_get_by_alias(alias))))
- return -1;
+ if (NULL ==
+ (task = MSG_mailbox_get_head(MSG_mailbox_get_by_alias(alias))))
+ return -1;
- return MSG_process_get_PID(task->simdata->sender);
+ 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);
- }
-}
-
-
-
-
-
