* \brief Return the last value returned by a MSG function (except
* MSG_get_errno...).
*/
-MSG_error_t
+MSG_error_t
MSG_get_errno(void)
{
return PROCESS_GET_ERRNO();
* \return #MSG_FATAL if \a task is not properly initialized and
* #MSG_OK otherwise.
*/
-MSG_error_t
+MSG_error_t
MSG_task_execute(m_task_t task)
{
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;
- xbt_assert0((!simdata->compute) && (task->simdata->using == 1),"This task is executed somewhere else. Go fix your code!");
-
+ 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->using++;
+
+ 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);
+ 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);
self->simdata->waiting_task = NULL;
-
+
SIMIX_mutex_unlock(simdata->mutex);
- simdata->using--;
-
- if (SIMIX_action_get_state(task->simdata->compute) == SURF_ACTION_DONE)
+ 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->comm = NULL;
simdata->compute = NULL;
MSG_RETURN(MSG_OK);
- }
- else if(SIMIX_host_get_state(SIMIX_host_self()) == 0)
+ }
+ 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
+ }
+ else
{
/* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */
SIMIX_action_destroy(task->simdata->compute);
/** \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
+ * 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.
* \see m_task_t
* \return The new corresponding object.
*/
-m_task_t
+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->using = 1;
+ 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_error_t
MSG_parallel_task_execute(m_task_t task)
{
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;
-
- xbt_assert0((!simdata->compute) && (task->simdata->using == 1),"This task is executed somewhere else. Go fix your code!");
-
+
+ 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->using++;
-
+
+ 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);
+ 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);
self->simdata->waiting_task = NULL;
-
-
+
+
SIMIX_mutex_unlock(simdata->mutex);
- simdata->using--;
-
- if (SIMIX_action_get_state(task->simdata->compute) == SURF_ACTION_DONE)
+ 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->comm = NULL;
simdata->compute = NULL;
MSG_RETURN(MSG_OK);
- }
- else if(SIMIX_host_get_state(SIMIX_host_self()) == 0)
+ }
+ 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
+ }
+ else
{
/* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */
SIMIX_action_destroy(task->simdata->compute);
*
* \param nb_sec a number of second
*/
-MSG_error_t
+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;
-
+
/* 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);
+ do {
+ SIMIX_cond_wait(cond, mutex);
+ state = SIMIX_action_get_state(act_sleep);
+ } while(state==SURF_ACTION_READY || state==SURF_ACTION_RUNNING);
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_action_get_state(act_sleep) == SURF_ACTION_DONE)
{
- if (SIMIX_host_get_state(SIMIX_host_self()) == SURF_CPU_OFF)
+ if (SIMIX_host_get_state(SIMIX_host_self()) == SURF_CPU_OFF)
{
SIMIX_action_destroy(act_sleep);
MSG_RETURN(MSG_HOST_FAILURE);
}
- }
- else
+ }
+ else
{
SIMIX_action_destroy(act_sleep);
MSG_RETURN(MSG_HOST_FAILURE);
}
-
+
+ SIMIX_action_destroy(act_sleep);
MSG_RETURN(MSG_OK);
}
* \brief Return the number of MSG tasks currently running on
* the host of the current running process.
*/
-static int
+static int
MSG_get_msgload(void)
{
xbt_die("not implemented yet");
* \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_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_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_error_t
MSG_task_get(m_task_t * task, m_channel_t channel)
{
return MSG_task_get_with_timeout(task, channel, -1);
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
+ 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.
+ 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.
*/
-MSG_error_t
+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_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_error_t
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_error_t
+MSG_error_t
MSG_task_receive(m_task_t * task, const char* alias)
{
- return MSG_task_receive_with_timeout(task, alias, -1);
+ return MSG_task_receive_with_timeout(task, alias, -1);
}
-MSG_error_t
+MSG_error_t
MSG_task_receive_with_timeout(m_task_t * task, const char* alias, double timeout)
{
- return MSG_task_receive_ext(task, alias, timeout, NULL);
+ return MSG_task_receive_ext(task, alias, timeout, NULL);
}
-MSG_error_t
+MSG_error_t
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);
* #MSG_TRANSFER_FAILURE if the transfer could not be properly done
* (network failure, dest failure)
*/
-MSG_error_t
+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);
}
/** \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
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_error_t
+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);
}
-MSG_error_t
+MSG_error_t
MSG_task_send(m_task_t task,const char* alias)
{
return MSG_task_send_with_timeout(task, alias, -1);
}
-MSG_error_t
+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);
}
-
-MSG_error_t
+
+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);
}
-int
+int
MSG_task_listen(const char* alias)
{
CHECK_HOST();
-
+
return !MSG_mailbox_is_empty(MSG_mailbox_get_by_alias(alias));
}
number of channels fixed with MSG_set_channel_number().
* \return 1 if there is a pending communication and 0 otherwise
*/
-int
+int
MSG_task_Iprobe(m_channel_t 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 the number of tasks waiting to be received on \a channel
and sent by \a host.
*/
-int
+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);
-
+
+ return MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_channel(MSG_host_self(), channel),host);
+
}
-int
+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);
+
+ return MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_alias(alias),host);
}
/** \ingroup msg_gos_functions
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
+int
MSG_task_probe_from(m_channel_t channel)
{
m_task_t task;
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))))
/** \ingroup msg_gos_functions
* \brief Wait for at most \a max_duration second for a task reception
- on \a channel.
-
+ on \a channel.
+
* \a PID is updated with the PID of the first process that triggered this event if any.
*
* It takes three parameters:
* \return #MSG_HOST_FAILURE if the host is shut down in the meantime
and #MSG_OK otherwise.
*/
-MSG_error_t
+MSG_error_t
MSG_channel_select_from(m_channel_t channel,double timeout, int *PID)
{
m_host_t h = NULL;
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)
+
+ if(PID)
{
*PID = -1;
}
-
- if (timeout == 0.0)
+
+ if (timeout == 0.0)
{
*PID = MSG_task_probe_from(channel);
MSG_RETURN(MSG_OK);
- }
- else
+ }
+ else
{
CHECK_HOST();
h = MSG_host_self();
h_simdata = h->simdata;
-
- mailbox = MSG_mailbox_get_by_channel(MSG_host_self(), channel);
-
+
+ mailbox = MSG_mailbox_get_by_channel(MSG_host_self(), channel);
+
while(MSG_mailbox_is_empty(mailbox))
{
- if(timeout > 0)
+ if(timeout > 0)
{
- if (!first_time)
+ 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)
+
+ if (timeout > 0)
{
SIMIX_cond_wait_timeout(cond, h_simdata->mutex, timeout);
- }
- else
+ }
+ 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)
+
+ 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)
+
+
+ if (PID)
{
*PID = MSG_process_get_PID(t->simdata->sender);
}
-
+
MSG_RETURN(MSG_OK);
}
}
-MSG_error_t
+MSG_error_t
MSG_alias_select_from(const char* alias, double timeout, int* PID)
{
m_host_t h = NULL;
int first_time = 1;
smx_cond_t cond;
msg_mailbox_t mailbox;
-
- if (PID)
+
+ if (PID)
{
*PID = -1;
}
-
- if(timeout == 0.0)
+
+ if(timeout == 0.0)
{
*PID = MSG_task_listen_from(alias);
MSG_RETURN(MSG_OK);
- }
- else
+ }
+ 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);
-
+
+ mailbox = MSG_mailbox_get_by_alias(alias);
+
while(MSG_mailbox_is_empty(mailbox))
{
- if(timeout > 0)
+ if(timeout > 0)
{
- if (!first_time)
+ 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)
+
+ if (timeout > 0)
{
SIMIX_cond_wait_timeout(cond, h_simdata->mutex, timeout);
- }
- else
+ }
+ 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)
+
+ 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)
+
+
+ if (PID)
{
*PID = MSG_process_get_PID(t->simdata->sender);
}
-
+
MSG_RETURN(MSG_OK);
}
}
-
+
