int TRACE_end()
{
if (!trace_active)
return 1;
TRACE_generate_viva_uncat_conf();
TRACE_generate_viva_cat_conf();
/* dump trace buffer */
TRACE_last_timestamp_to_dump = surf_get_clock();
TRACE_paje_dump_buffer(1);
/* destroy all data structures of tracing (and free) */
PJ_container_free_all();
PJ_type_free_all();
PJ_container_release();
PJ_type_release();
TRACE_smpi_release();
TRACE_surf_release();
xbt_dict_free(&user_link_variables);
xbt_dict_free(&user_host_variables);
xbt_dict_free(&declared_marks);
xbt_dict_free(&created_categories);
/* close the trace file */
TRACE_paje_end();
/* de-activate trace */
trace_active = 0;
XBT_DEBUG ("Tracing is off");
XBT_DEBUG("Tracing system is shutdown");
return 0;
}
double surf_solve(double max_date)
{
double time_delta = -1.0; /* duration */
double next_event_date = -1.0;
double model_next_action_end = -1.0;
double value = -1.0;
simgrid::surf::Resource *resource = nullptr;
tmgr_trace_iterator_t event = nullptr;
if (max_date > 0.0) {
xbt_assert(max_date > NOW,"You asked to simulate up to %f, but that's in the past already", max_date);
time_delta = max_date - NOW;
}
/* Physical models MUST be resolved first */
XBT_DEBUG("Looking for next event in physical models");
double next_event_phy = surf_host_model->next_occuring_event(NOW);
if ((time_delta < 0.0 || next_event_phy < time_delta) && next_event_phy >= 0.0) {
time_delta = next_event_phy;
}
if (surf_vm_model != nullptr) {
XBT_DEBUG("Looking for next event in virtual models");
double next_event_virt = surf_vm_model->next_occuring_event(NOW);
if ((time_delta < 0.0 || next_event_virt < time_delta) && next_event_virt >= 0.0)
time_delta = next_event_virt;
}
XBT_DEBUG("Min for resources (remember that NS3 don't update that value): %f", time_delta);
XBT_DEBUG("Looking for next trace event");
while (1) { // Handle next occurring events until none remains
next_event_date = future_evt_set->next_date();
XBT_DEBUG("Next TRACE event: %f", next_event_date);
if(! surf_network_model->next_occuring_event_isIdempotent()){ // NS3, I see you
if (next_event_date!=-1.0 && time_delta!=-1.0) {
time_delta = MIN(next_event_date - NOW, time_delta);
} else {
time_delta = MAX(next_event_date - NOW, time_delta); // Get the positive component
}
XBT_DEBUG("Run the NS3 network at most %fs", time_delta);
// run until min or next flow
model_next_action_end = surf_network_model->next_occuring_event(time_delta);
XBT_DEBUG("Min for network : %f", model_next_action_end);
if(model_next_action_end>=0.0)
time_delta = model_next_action_end;
}
if (next_event_date < 0.0) {
XBT_DEBUG("no next TRACE event. Stop searching for it");
break;
}
if ((time_delta == -1.0) || (next_event_date > NOW + time_delta))
break; // next event occurs after the next resource change, bail out
XBT_DEBUG("Updating models (min = %g, NOW = %g, next_event_date = %g)", time_delta, NOW, next_event_date);
while ((event = future_evt_set->pop_leq(next_event_date, &value, &resource))) {
if (resource->isUsed() || xbt_dict_get_or_null(watched_hosts_lib, resource->getName())) {
time_delta = next_event_date - NOW;
XBT_DEBUG("This event invalidates the next_occuring_event() computation of models. Next event set to %f", time_delta);
}
// FIXME: I'm too lame to update NOW live, so I change it and restore it so that the real update with surf_min will work
double round_start = NOW;
NOW = next_event_date;
/* update state of the corresponding resource to the new value. Does not touch lmm.
It will be modified if needed when updating actions */
XBT_DEBUG("Calling update_resource_state for resource %s", resource->getName());
resource->apply_event(event, value);
NOW = round_start;
}
}
/* FIXME: Moved this test to here to avoid stopping simulation if there are actions running on cpus and all cpus are with availability = 0.
* This may cause an infinite loop if one cpu has a trace with periodicity = 0 and the other a trace with periodicity > 0.
* The options are: all traces with same periodicity(0 or >0) or we need to change the way how the events are managed */
if (time_delta == -1.0) {
XBT_DEBUG("No next event at all. Bail out now.");
return -1.0;
}
XBT_DEBUG("Duration set to %f", time_delta);
// Bump the time: jump into the future
NOW = NOW + time_delta;
// Inform the models of the date change
for (auto model : *all_existing_models) {
model->updateActionsState(NOW, time_delta);
}
TRACE_paje_dump_buffer (0);
return time_delta;
}
