1 /* Copyright (c) 2013-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "src/surf/HostImpl.hpp"
8 #include "surf_interface.hpp"
9 #include "network_interface.hpp"
10 #include "src/instr/instr_private.h"
11 #include "plugins/energy.hpp"
12 #include "virtual_machine.hpp"
14 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_kernel);
20 static simgrid::surf::HostImpl *get_casted_host(sg_host_t host){ //FIXME: killme
21 return host->extension<simgrid::surf::HostImpl>();
24 static simgrid::surf::VirtualMachine *get_casted_vm(sg_host_t host){
25 return static_cast<simgrid::surf::VirtualMachine*>(host->extension<simgrid::surf::HostImpl>());
32 double next_event_date = -1.0;
33 tmgr_trace_iterator_t event = nullptr;
35 simgrid::surf::Resource *resource = nullptr;
37 XBT_DEBUG ("Consume all trace events occurring before the starting time.");
38 while ((next_event_date = future_evt_set->next_date()) != -1.0) {
39 if (next_event_date > NOW)
42 while ((event = future_evt_set->pop_leq(next_event_date, &value, &resource))) {
44 resource->apply_event(event, value);
49 XBT_DEBUG ("Set every models in the right state by updating them to 0.");
50 for (auto model : *all_existing_models)
51 model->updateActionsState(NOW, 0.0);
54 double surf_solve(double max_date)
56 double time_delta = -1.0; /* duration */
57 double next_event_date = -1.0;
58 double model_next_action_end = -1.0;
60 simgrid::surf::Resource *resource = nullptr;
61 tmgr_trace_iterator_t event = nullptr;
64 xbt_assert(max_date > NOW,"You asked to simulate up to %f, but that's in the past already", max_date);
66 time_delta = max_date - NOW;
69 /* Physical models MUST be resolved first */
70 XBT_DEBUG("Looking for next event in physical models");
71 double next_event_phy = surf_host_model->nextOccuringEvent(NOW);
72 if ((time_delta < 0.0 || next_event_phy < time_delta) && next_event_phy >= 0.0) {
73 time_delta = next_event_phy;
75 if (surf_vm_model != nullptr) {
76 XBT_DEBUG("Looking for next event in virtual models");
77 double next_event_virt = surf_vm_model->nextOccuringEvent(NOW);
78 if ((time_delta < 0.0 || next_event_virt < time_delta) && next_event_virt >= 0.0)
79 time_delta = next_event_virt;
82 XBT_DEBUG("Min for resources (remember that NS3 don't update that value): %f", time_delta);
84 XBT_DEBUG("Looking for next trace event");
86 while (1) { // Handle next occurring events until none remains
87 next_event_date = future_evt_set->next_date();
88 XBT_DEBUG("Next TRACE event: %f", next_event_date);
90 if(! surf_network_model->nextOccuringEventIsIdempotent()){ // NS3, I see you
91 if (next_event_date!=-1.0 && time_delta!=-1.0) {
92 time_delta = MIN(next_event_date - NOW, time_delta);
94 time_delta = MAX(next_event_date - NOW, time_delta); // Get the positive component
97 XBT_DEBUG("Run the NS3 network at most %fs", time_delta);
98 // run until min or next flow
99 model_next_action_end = surf_network_model->nextOccuringEvent(time_delta);
101 XBT_DEBUG("Min for network : %f", model_next_action_end);
102 if(model_next_action_end>=0.0)
103 time_delta = model_next_action_end;
106 if (next_event_date < 0.0) {
107 XBT_DEBUG("no next TRACE event. Stop searching for it");
111 if ((time_delta == -1.0) || (next_event_date > NOW + time_delta))
112 break; // next event occurs after the next resource change, bail out
114 XBT_DEBUG("Updating models (min = %g, NOW = %g, next_event_date = %g)", time_delta, NOW, next_event_date);
116 while ((event = future_evt_set->pop_leq(next_event_date, &value, &resource))) {
117 if (resource->isUsed() || xbt_dict_get_or_null(watched_hosts_lib, resource->getName())) {
118 time_delta = next_event_date - NOW;
119 XBT_DEBUG("This event invalidates the next_occuring_event() computation of models. Next event set to %f", time_delta);
121 // 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
122 double round_start = NOW;
123 NOW = next_event_date;
124 /* update state of the corresponding resource to the new value. Does not touch lmm.
125 It will be modified if needed when updating actions */
126 XBT_DEBUG("Calling update_resource_state for resource %s", resource->getName());
127 resource->apply_event(event, value);
132 /* FIXME: Moved this test to here to avoid stopping simulation if there are actions running on cpus and all cpus are with availability = 0.
133 * This may cause an infinite loop if one cpu has a trace with periodicity = 0 and the other a trace with periodicity > 0.
134 * The options are: all traces with same periodicity(0 or >0) or we need to change the way how the events are managed */
135 if (time_delta == -1.0) {
136 XBT_DEBUG("No next event at all. Bail out now.");
140 XBT_DEBUG("Duration set to %f", time_delta);
142 // Bump the time: jump into the future
143 NOW = NOW + time_delta;
145 // Inform the models of the date change
146 for (auto model : *all_existing_models) {
147 model->updateActionsState(NOW, time_delta);
150 TRACE_paje_dump_buffer (0);
159 surf_action_t surf_model_extract_done_action_set(surf_model_t model){
160 if (model->getDoneActionSet()->empty())
162 surf_action_t res = &model->getDoneActionSet()->front();
163 model->getDoneActionSet()->pop_front();
167 surf_action_t surf_model_extract_failed_action_set(surf_model_t model){
168 if (model->getFailedActionSet()->empty())
170 surf_action_t res = &model->getFailedActionSet()->front();
171 model->getFailedActionSet()->pop_front();
175 int surf_model_running_action_set_size(surf_model_t model){
176 return model->getRunningActionSet()->size();
179 surf_action_t surf_host_sleep(sg_host_t host, double duration){
180 return host->pimpl_cpu->sleep(duration);
183 surf_action_t surf_host_open(sg_host_t host, const char* fullpath){
184 return get_casted_host(host)->open(fullpath);
187 surf_action_t surf_host_close(sg_host_t host, surf_file_t fd){
188 return get_casted_host(host)->close(fd);
191 int surf_host_unlink(sg_host_t host, surf_file_t fd){
192 return get_casted_host(host)->unlink(fd);
195 size_t surf_host_get_size(sg_host_t host, surf_file_t fd){
196 return get_casted_host(host)->getSize(fd);
199 surf_action_t surf_host_read(sg_host_t host, surf_file_t fd, sg_size_t size){
200 return get_casted_host(host)->read(fd, size);
203 surf_action_t surf_host_write(sg_host_t host, surf_file_t fd, sg_size_t size){
204 return get_casted_host(host)->write(fd, size);
207 xbt_dynar_t surf_host_get_info(sg_host_t host, surf_file_t fd){
208 return get_casted_host(host)->getInfo(fd);
211 size_t surf_host_file_tell(sg_host_t host, surf_file_t fd){
212 return get_casted_host(host)->fileTell(fd);
215 int surf_host_file_seek(sg_host_t host, surf_file_t fd,
216 sg_offset_t offset, int origin){
217 return get_casted_host(host)->fileSeek(fd, offset, origin);
220 int surf_host_file_move(sg_host_t host, surf_file_t fd, const char* fullpath){
221 return get_casted_host(host)->fileMove(fd, fullpath);
224 void surf_vm_suspend(sg_host_t vm){
225 get_casted_vm(vm)->suspend();
228 void surf_vm_resume(sg_host_t vm){
229 get_casted_vm(vm)->resume();
232 void surf_vm_save(sg_host_t vm){
233 get_casted_vm(vm)->save();
236 void surf_vm_restore(sg_host_t vm){
237 get_casted_vm(vm)->restore();
240 void surf_vm_migrate(sg_host_t vm, sg_host_t ind_vm_ws_dest){
241 get_casted_vm(vm)->migrate(ind_vm_ws_dest);
244 sg_host_t surf_vm_get_pm(sg_host_t vm){
245 return get_casted_vm(vm)->getPm();
248 void surf_vm_set_bound(sg_host_t vm, double bound){
249 get_casted_vm(vm)->setBound(bound);
252 xbt_dict_t surf_storage_get_content(surf_resource_t resource){
253 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->getContent();
256 sg_size_t surf_storage_get_size(surf_resource_t resource){
257 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->getSize();
260 sg_size_t surf_storage_get_free_size(surf_resource_t resource){
261 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->getFreeSize();
264 sg_size_t surf_storage_get_used_size(surf_resource_t resource){
265 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->getUsedSize();
268 xbt_dict_t surf_storage_get_properties(surf_resource_t resource){
269 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->getProperties();
272 const char* surf_storage_get_host(surf_resource_t resource){
273 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->attach_;
276 void surf_cpu_action_set_bound(surf_action_t action, double bound) {
277 static_cast<simgrid::surf::CpuAction*>(action)->setBound(bound);
280 surf_file_t surf_storage_action_get_file(surf_action_t action){
281 return static_cast<simgrid::surf::StorageAction*>(action)->p_file;