XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gos, msg,
"Logging specific to MSG (gos)");
+/** \defgroup msg_gos_functions MSG Operating System Functions
+ * \brief This section describes the functions that can be used
+ * by an agent for handling some task.
+ */
+
/** \ingroup msg_gos_functions
* \brief This function is now deprecated and useless. Please stop using it.
*/
-
MSG_error_t MSG_process_start(m_process_t process)
{
xbt_assert0(0,"This function is now deprecated and useless. Please stop using it.");
/** \ingroup msg_gos_functions
* \brief Listen on a channel and wait for receiving a task.
*
- * It takes two parameter.
+ * 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
*/
MSG_error_t MSG_task_get(m_task_t * task,
m_channel_t channel)
+{
+ 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 with a timeout.
+ *
+ * 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.
+ * \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 timeout 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.
+ */
+
+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;
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();
/* Get the task */
h = MSG_host_self();
h_simdata = h->simdata;
- while ((t = xbt_fifo_pop(h_simdata->mbox[channel])) == NULL) {
- xbt_assert0(!(h_simdata->sleeping[channel]),
- "A process is already blocked on this channel");
+
+ 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_suspend(process);
+ 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 ? */
}
/* Transfer */
t_simdata->using++;
+
t_simdata->comm = surf_workstation_resource->extension_public->
communicate(MSG_process_get_host(t_simdata->sender)->simdata->host,
- h->simdata->host, t_simdata->message_size);
+ h->simdata->host, t_simdata->message_size,t_simdata->rate);
+
surf_workstation_resource->common_public->action_set_data(t_simdata->comm,t);
+ if(__MSG_process_isBlocked(t_simdata->sender))
+ __MSG_process_unblock(t_simdata->sender);
+
+ PAJE_PROCESS_PUSH_STATE(process,"C");
+
do {
__MSG_task_wait_event(process, t);
state=surf_workstation_resource->common_public->action_get_state(t_simdata->comm);
} while (state==SURF_ACTION_RUNNING);
- 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(t->simdata->using>1) {
+ xbt_fifo_unshift(msg_global->process_to_run,process);
+ xbt_context_yield();
+ }
+
+ PAJE_PROCESS_POP_STATE(process);
+ PAJE_COMM_STOP(process,t,channel);
+
+ 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;
+ 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);
}
+/** \ingroup msg_gos_functions
+ * \brief Test whether there is a pending communication on a channel, and who sent it.
+ *
+ * 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().
+ * \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)
+{
+ m_host_t h = NULL;
+ simdata_host_t h_simdata = NULL;
+ xbt_fifo_item_t item;
+ m_task_t t;
+
+ CHECK_HOST();
+ h = MSG_host_self();
+ h_simdata = h->simdata;
+
+ DEBUG2("Probing on channel %d (%s)", channel,h->name);
+
+ item = xbt_fifo_getFirstItem(h->simdata->mbox[channel]);
+ if (!item || !(t = xbt_fifo_get_item_content(item)))
+ return -1;
+
+ 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();
+
+ 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_getFirstItem(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.
task_simdata = task->simdata;
task_simdata->sender = process;
-
+ xbt_assert0(task_simdata->using==1,"Gargl!");
+ task_simdata->comm = NULL;
local_host = ((simdata_process_t) process->simdata)->host;
remote_host = dest;
+ DEBUG4("Trying to send a task (%lg 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);
+
+ PAJE_COMM_START(process,task,channel);
if(remote_host->simdata->sleeping[channel])
- MSG_process_resume(remote_host->simdata->sleeping[channel]);
- else {
- process->simdata->put_host = dest;
- process->simdata->put_channel = channel;
- MSG_process_suspend(process);
- process->simdata->put_host = NULL;
- process->simdata->put_channel = -1;
- }
+ __MSG_process_unblock(remote_host->simdata->sleeping[channel]);
- do {
+ process->simdata->put_host = dest;
+ process->simdata->put_channel = channel;
+ while(!(task_simdata->comm))
+ __MSG_process_block(-1);
+ surf_workstation_resource->common_public->action_use(task_simdata->comm);
+ process->simdata->put_host = NULL;
+ process->simdata->put_channel = -1;
+
+
+ PAJE_PROCESS_PUSH_STATE(process,"C");
+
+ state=surf_workstation_resource->common_public->action_get_state(task_simdata->comm);
+ while (state==SURF_ACTION_RUNNING) {
__MSG_task_wait_event(process, task);
state=surf_workstation_resource->common_public->action_get_state(task_simdata->comm);
- } while (state==SURF_ACTION_RUNNING);
+ }
MSG_task_destroy(task);
- 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)
+ PAJE_PROCESS_POP_STATE(process);
+
+ if(state == SURF_ACTION_DONE) {
+ if(surf_workstation_resource->common_public->action_free(task_simdata->comm))
+ task_simdata->comm = NULL;
+ 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_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_RETURN(MSG_TRANSFER_FAILURE);
+ }
+}
+
+/** \ingroup msg_gos_functions
+ * \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 max_rate)
+{
+ task->simdata->rate=max_rate;
+ return(MSG_task_put(task, dest, channel));
+ task->simdata->rate=-1.0;
}
/** \ingroup msg_gos_functions
MSG_error_t MSG_task_execute(m_task_t task)
{
m_process_t process = MSG_process_self();
+ MSG_error_t res;
+
+ DEBUG1("Computing on %s", process->simdata->host->name);
__MSG_task_execute(process, task);
- return __MSG_wait_for_computation(process,task);
+
+ PAJE_PROCESS_PUSH_STATE(process,"E");
+ res = __MSG_wait_for_computation(process,task);
+ PAJE_PROCESS_POP_STATE(process);
+ return res;
}
void __MSG_task_execute(m_process_t process, m_task_t 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;
+ 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_TRANSFER_FAILURE);
+ }
}
/** \ingroup msg_gos_functions
*
* \param nb_sec a number of second
*/
-MSG_error_t MSG_process_sleep(long double nb_sec)
+MSG_error_t MSG_process_sleep(double nb_sec)
{
e_surf_action_state_t state = SURF_ACTION_NOT_IN_THE_SYSTEM;
m_process_t process = MSG_process_self();
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_isSuspended(process)) {
- MSG_process_suspend(MSG_process_self());
+ }
+ 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
{
return PROCESS_GET_ERRNO();
}
-
