- /* Sanity check */
- xbt_assert0(task,"Null pointer for the task\n");
-
- if (*task)
- CRITICAL0("MSG_task_get() was asked to write in a non empty task struct.");
-
- /* Get the task */
- h = MSG_host_self();
- h_simdata = h->simdata;
-
- DEBUG2("Waiting for a task on channel %d (%s)", channel,h->name);
-
- while ((t = xbt_fifo_shift(h_simdata->mbox[channel])) == NULL) {
- 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(surf_workstation_resource->extension_public->get_state(h_simdata->host)
- == SURF_CPU_OFF)
- MSG_RETURN(MSG_HOST_FAILURE);
- h_simdata->sleeping[channel] = NULL;
- /* OK, we should both be ready now. Are you there ? */
+
+ 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);