/* 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"private.h"
-#include"xbt/sysdep.h"
-#include "xbt/error.h"
+#include "private.h"
+#include "xbt/sysdep.h"
+#include "xbt/log.h"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gos, msg,
"Logging specific to MSG (gos)");
*/
/** \ingroup msg_gos_functions
- * \brief This function is now deprecated and useless. Please stop using it.
+ * \brief Listen on a channel and wait for receiving a task.
+ *
+ * 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.
+ * \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().
+ * \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_process_start(m_process_t process)
+MSG_error_t MSG_task_get(m_task_t * task,
+ m_channel_t channel)
{
- xbt_assert0(0,"This function is now deprecated and useless. Please stop using it.");
-
- return MSG_OK;
+ return MSG_task_get_with_time_out(task, channel, -1);
}
/** \ingroup msg_gos_functions
- * \brief Listen on a channel and wait for receiving a task.
+ * \brief Listen on a channel and wait for receiving a task with a timeout.
*
- * It takes two parameter.
+ * 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
* \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 max_duration the maximum time to wait for a task before giving
+ up. In such a case, \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(m_task_t * task,
- m_channel_t channel)
+
+MSG_error_t MSG_task_get_with_time_out(m_task_t * task,
+ m_channel_t channel,
+ double max_duration)
{
m_process_t process = MSG_process_self();
m_task_t t = NULL;
m_host_t h = NULL;
simdata_task_t t_simdata = NULL;
simdata_host_t h_simdata = NULL;
- int warning = 0;
+ int first_time = 1;
e_surf_action_state_t state = SURF_ACTION_NOT_IN_THE_SYSTEM;
CHECK_HOST();
+ xbt_assert1((channel>=0) && (channel < msg_global->max_channel),"Invalid channel %d",channel);
/* Sanity check */
xbt_assert0(task,"Null pointer for the task\n");
/* Get the task */
h = MSG_host_self();
h_simdata = h->simdata;
- while ((t = xbt_fifo_pop(h_simdata->mbox[channel])) == NULL) {
+
+ DEBUG2("Waiting for a task on channel %d (%s)", channel,h->name);
+
+ while ((t = xbt_fifo_shift(h_simdata->mbox[channel])) == NULL) {
+ if(max_duration>0) {
+ if(!first_time) {
+ MSG_RETURN(MSG_OK);
+ }
+ }
xbt_assert2(!(h_simdata->sleeping[channel]),
"A process (%s(%d)) is already blocked on this channel",
h_simdata->sleeping[channel]->name,
h_simdata->sleeping[channel]->simdata->PID);
h_simdata->sleeping[channel] = process; /* I'm waiting. Wake me up when you're ready */
- __MSG_process_block();
+ if(max_duration>0) {
+ __MSG_process_block(max_duration);
+ } else {
+ __MSG_process_block(-1);
+ }
if(surf_workstation_resource->extension_public->get_state(h_simdata->host)
== SURF_CPU_OFF)
MSG_RETURN(MSG_HOST_FAILURE);
h_simdata->sleeping[channel] = NULL;
+ first_time = 0;
/* OK, we should both be ready now. Are you there ? */
}
xbt_context_yield();
}
- PAJE_PROCESS_POP_STATE(process);
+ PAJE_PROCESS_POP_STATE(process);
PAJE_COMM_STOP(process,t,channel);
- if(state == SURF_ACTION_DONE) MSG_RETURN(MSG_OK);
- else if(surf_workstation_resource->extension_public->get_state(h_simdata->host)
- == SURF_CPU_OFF)
+ if(state == SURF_ACTION_DONE) {
+ if(surf_workstation_resource->common_public->action_free(t_simdata->comm))
+ t_simdata->comm = NULL;
+ MSG_RETURN(MSG_OK);
+ } else if(surf_workstation_resource->extension_public->get_state(h_simdata->host)
+ == SURF_CPU_OFF) {
+ if(surf_workstation_resource->common_public->action_free(t_simdata->comm))
+ t_simdata->comm = NULL;
MSG_RETURN(MSG_HOST_FAILURE);
- else MSG_RETURN(MSG_TRANSFER_FAILURE);
+ } else {
+ if(surf_workstation_resource->common_public->action_free(t_simdata->comm))
+ t_simdata->comm = NULL;
+ MSG_RETURN(MSG_TRANSFER_FAILURE);
+ }
}
/** \ingroup msg_gos_functions
m_host_t h = NULL;
simdata_host_t h_simdata = NULL;
+ xbt_assert1((channel>=0) && (channel < msg_global->max_channel),"Invalid channel %d",channel);
+ DEBUG2("Probing on channel %d (%s)", channel,h->name);
CHECK_HOST();
h = MSG_host_self();
h_simdata = h->simdata;
- return(xbt_fifo_getFirstItem(h_simdata->mbox[channel])!=NULL);
+ return(xbt_fifo_get_first_item(h_simdata->mbox[channel])!=NULL);
}
/** \ingroup msg_gos_functions
xbt_fifo_item_t item;
m_task_t t;
+ xbt_assert1((channel>=0) && (channel < msg_global->max_channel),"Invalid channel %d",channel);
CHECK_HOST();
h = MSG_host_self();
h_simdata = h->simdata;
+
+ DEBUG2("Probing on channel %d (%s)", channel,h->name);
- item = xbt_fifo_getFirstItem(((simdata_host_t)h->simdata)->mbox[channel]);
- if (!item || !(t = xbt_fifo_get_item_content(item)) || (simdata_task_t)t->simdata)
+ item = xbt_fifo_get_first_item(h->simdata->mbox[channel]);
+ if (!item || !(t = xbt_fifo_get_item_content(item)))
return -1;
- return MSG_process_get_PID(((simdata_task_t)t->simdata)->sender);
+ return MSG_process_get_PID(t->simdata->sender);
}
+MSG_error_t MSG_channel_select_from(m_channel_t channel, double max_duration,
+ int *PID)
+{
+ m_host_t h = NULL;
+ simdata_host_t h_simdata = NULL;
+ xbt_fifo_item_t item;
+ m_task_t t;
+ int first_time = 1;
+ m_process_t process = MSG_process_self();
+
+ xbt_assert1((channel>=0) && (channel < msg_global->max_channel),"Invalid channel %d",channel);
+ if(PID) {
+ *PID = -1;
+ }
+
+ if(max_duration==0.0) {
+ return MSG_task_probe_from(channel);
+ } else {
+ CHECK_HOST();
+ h = MSG_host_self();
+ h_simdata = h->simdata;
+
+ DEBUG2("Probing on channel %d (%s)", channel,h->name);
+ while(!(item = xbt_fifo_get_first_item(h->simdata->mbox[channel]))) {
+ if(max_duration>0) {
+ if(!first_time) {
+ MSG_RETURN(MSG_OK);
+ }
+ }
+ xbt_assert2(!(h_simdata->sleeping[channel]),
+ "A process (%s(%d)) is already blocked on this channel",
+ h_simdata->sleeping[channel]->name,
+ h_simdata->sleeping[channel]->simdata->PID);
+ h_simdata->sleeping[channel] = process; /* I'm waiting. Wake me up when you're ready */
+ if(max_duration>0) {
+ __MSG_process_block(max_duration);
+ } else {
+ __MSG_process_block(-1);
+ }
+ if(surf_workstation_resource->extension_public->get_state(h_simdata->host)
+ == SURF_CPU_OFF) {
+ MSG_RETURN(MSG_HOST_FAILURE);
+ }
+ h_simdata->sleeping[channel] = NULL;
+ first_time = 0;
+ }
+ if (!item || !(t = xbt_fifo_get_item_content(item))) {
+ MSG_RETURN(MSG_OK);
+ }
+ if(PID) {
+ *PID = MSG_process_get_PID(t->simdata->sender);
+ }
+ MSG_RETURN(MSG_OK);
+ }
+}
/** \ingroup msg_gos_functions
* \brief Put a task on a channel of an host and waits for the end of the
* transmission.
CHECK_HOST();
+ xbt_assert1((channel>=0) && (channel < msg_global->max_channel),"Invalid channel %d",channel);
+
task_simdata = task->simdata;
task_simdata->sender = process;
xbt_assert0(task_simdata->using==1,"Gargl!");
local_host = ((simdata_process_t) process->simdata)->host;
remote_host = dest;
+ DEBUG4("Trying to send a task (%g Mb) from %s to %s on channel %d",
+ task->simdata->message_size,local_host->name, remote_host->name, channel);
+
xbt_fifo_push(((simdata_host_t) remote_host->simdata)->
mbox[channel], task);
process->simdata->put_host = dest;
process->simdata->put_channel = channel;
while(!(task_simdata->comm))
- __MSG_process_block();
+ __MSG_process_block(-1);
+ surf_workstation_resource->common_public->action_use(task_simdata->comm);
process->simdata->put_host = NULL;
process->simdata->put_channel = -1;
state=surf_workstation_resource->common_public->action_get_state(task_simdata->comm);
}
- MSG_task_destroy(task);
PAJE_PROCESS_POP_STATE(process);
- if(state == SURF_ACTION_DONE) MSG_RETURN(MSG_OK);
- else if(surf_workstation_resource->extension_public->get_state(local_host->simdata->host)
- == SURF_CPU_OFF)
+ if(state == SURF_ACTION_DONE) {
+ if(surf_workstation_resource->common_public->action_free(task_simdata->comm))
+ task_simdata->comm = NULL;
+ MSG_task_destroy(task);
+ MSG_RETURN(MSG_OK);
+ } else if(surf_workstation_resource->extension_public->get_state(local_host->simdata->host)
+ == SURF_CPU_OFF) {
+ if(surf_workstation_resource->common_public->action_free(task_simdata->comm))
+ task_simdata->comm = NULL;
+ MSG_task_destroy(task);
MSG_RETURN(MSG_HOST_FAILURE);
- else MSG_RETURN(MSG_TRANSFER_FAILURE);
+ } else {
+ if(surf_workstation_resource->common_public->action_free(task_simdata->comm))
+ task_simdata->comm = NULL;
+ MSG_task_destroy(task);
+ MSG_RETURN(MSG_TRANSFER_FAILURE);
+ }
}
/** \ingroup msg_gos_functions
m_host_t dest, m_channel_t channel,
double max_rate)
{
+ MSG_error_t res = MSG_OK;
task->simdata->rate=max_rate;
- return(MSG_task_put(task, dest, channel));
+ res = MSG_task_put(task, dest, channel);
task->simdata->rate=-1.0;
+ return(res);
}
/** \ingroup msg_gos_functions
{
m_process_t process = MSG_process_self();
MSG_error_t res;
+
+ DEBUG1("Computing on %s", process->simdata->host->name);
+
__MSG_task_execute(process, task);
PAJE_PROCESS_PUSH_STATE(process,"E");
simdata->compute = surf_workstation_resource->extension_public->
execute(MSG_process_get_host(process)->simdata->host,
simdata->computation_amount);
+ surf_workstation_resource->common_public->
+ set_priority(simdata->compute, simdata->priority);
+
surf_workstation_resource->common_public->action_set_data(simdata->compute,task);
}
simdata->using--;
- if(state == SURF_ACTION_DONE) MSG_RETURN(MSG_OK);
- else if(surf_workstation_resource->extension_public->
- get_state(MSG_process_get_host(process)->simdata->host)
- == SURF_CPU_OFF)
+ if(state == SURF_ACTION_DONE) {
+ if(surf_workstation_resource->common_public->action_free(simdata->compute))
+ simdata->compute = NULL;
+ simdata->computation_amount = 0.0;
+ MSG_RETURN(MSG_OK);
+ } else if(surf_workstation_resource->extension_public->
+ get_state(MSG_process_get_host(process)->simdata->host)
+ == SURF_CPU_OFF) {
+ if(surf_workstation_resource->common_public->action_free(simdata->compute))
+ simdata->compute = NULL;
MSG_RETURN(MSG_HOST_FAILURE);
- else MSG_RETURN(MSG_TRANSFER_FAILURE);
+ } else {
+ if(surf_workstation_resource->common_public->action_free(simdata->compute))
+ simdata->compute = NULL;
+ 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.
+ * \param name a name for the object. It is for user-level information
+ and can be NULL.
+ * \param host_nb the number of hosts implied in the parallel task.
+ * \param host_list an array of #host_nb m_host_t.
+ * \param computation_amount an array of #host_nb
+ 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 #host_nb*#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.
+ * \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)
+{
+ simdata_task_t simdata = xbt_new0(s_simdata_task_t,1);
+ m_task_t task = xbt_new0(s_m_task_t,1);
+ int i;
+
+ /* Task structure */
+ task->name = xbt_strdup(name);
+ task->simdata = simdata;
+ task->data = data;
+
+ /* Simulator Data */
+ simdata->sleeping = xbt_dynar_new(sizeof(m_process_t),NULL);
+ simdata->rate = -1.0;
+ simdata->using = 1;
+ simdata->sender = NULL;
+ simdata->host_nb = host_nb;
+
+ simdata->host_list = xbt_new0(void *, 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->host;
+
+ return task;
+}
+
+
+static void __MSG_parallel_task_execute(m_process_t process, m_task_t task)
+{
+ simdata_task_t simdata = NULL;
+
+ CHECK_HOST();
+
+ simdata = task->simdata;
+
+ xbt_assert0(simdata->host_nb,"This is not a parallel task. Go to hell.");
+
+ simdata->compute = surf_workstation_resource->extension_public->
+ execute_parallel_task(task->simdata->host_nb,
+ task->simdata->host_list,
+ task->simdata->comp_amount,
+ task->simdata->comm_amount,
+ 1.0,
+ -1.0);
+ if(simdata->compute)
+ surf_workstation_resource->common_public->action_set_data(simdata->compute,task);
+}
+
+MSG_error_t MSG_parallel_task_execute(m_task_t task)
+{
+ m_process_t process = MSG_process_self();
+ MSG_error_t res;
+
+ DEBUG0("Computing on a tons of guys");
+
+ __MSG_parallel_task_execute(process, task);
+
+ if(task->simdata->compute)
+ res = __MSG_wait_for_computation(process,task);
+ else
+ res = MSG_OK;
+
+ return res;
+}
+
/** \ingroup msg_gos_functions
* \brief Sleep for the specified number of seconds
if(state == SURF_ACTION_DONE) {
if(surf_workstation_resource->extension_public->
get_state(MSG_process_get_host(process)->simdata->host)
- == SURF_CPU_OFF)
+ == SURF_CPU_OFF) {
+ if(surf_workstation_resource->common_public->action_free(simdata->compute))
+ simdata->compute = NULL;
MSG_RETURN(MSG_HOST_FAILURE);
-
+ }
if(__MSG_process_isBlocked(process)) {
__MSG_process_unblock(MSG_process_self());
}
if(surf_workstation_resource->extension_public->
get_state(MSG_process_get_host(process)->simdata->host)
- == SURF_CPU_OFF)
+ == SURF_CPU_OFF) {
+ if(surf_workstation_resource->common_public->action_free(simdata->compute))
+ simdata->compute = NULL;
MSG_RETURN(MSG_HOST_FAILURE);
+ }
+ if(surf_workstation_resource->common_public->action_free(simdata->compute))
+ simdata->compute = NULL;
MSG_task_destroy(dummy);
MSG_RETURN(MSG_OK);
} else MSG_RETURN(MSG_HOST_FAILURE);
* \brief Return the number of MSG tasks currently running on a
* the host of the current running process.
*/
-int MSG_get_msgload(void)
+static int MSG_get_msgload(void)
{
+ m_process_t process;
+
CHECK_HOST();
- xbt_assert0(0,"Not implemented yet!");
- return 1;
+ xbt_assert0(0, "This function is still to be specified correctly (what do you mean by 'load', exactly?). In the meantime, please don't use it");
+ process = MSG_process_self();
+ return xbt_fifo_size(process->simdata->host->simdata->process_list);
}
/** \ingroup msg_gos_functions
