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 "plugins/energy.hpp"
8 #include "src/instr/instr_private.h"
9 #include "src/plugins/vm/VirtualMachineImpl.hpp"
10 #include "src/surf/HostImpl.hpp"
11 #include "src/surf/network_interface.hpp"
12 #include "surf_interface.hpp"
14 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_kernel);
20 static simgrid::surf::VirtualMachineImpl* get_casted_vm(sg_host_t host)
22 return static_cast<simgrid::surf::VirtualMachineImpl*>(host->pimpl_);
29 double next_event_date = -1.0;
30 tmgr_trace_iterator_t event = nullptr;
32 simgrid::surf::Resource *resource = nullptr;
34 XBT_DEBUG ("Consume all trace events occurring before the starting time.");
35 while ((next_event_date = future_evt_set->next_date()) != -1.0) {
36 if (next_event_date > NOW)
39 while ((event = future_evt_set->pop_leq(next_event_date, &value, &resource))) {
41 resource->apply_event(event, value);
46 XBT_DEBUG ("Set every models in the right state by updating them to 0.");
47 for (auto model : *all_existing_models)
48 model->updateActionsState(NOW, 0.0);
51 double surf_solve(double max_date)
53 double time_delta = -1.0; /* duration */
54 double next_event_date = -1.0;
55 double model_next_action_end = -1.0;
57 simgrid::surf::Resource *resource = nullptr;
58 tmgr_trace_iterator_t event = nullptr;
61 xbt_assert(max_date > NOW,"You asked to simulate up to %f, but that's in the past already", max_date);
63 time_delta = max_date - NOW;
66 /* Physical models MUST be resolved first */
67 XBT_DEBUG("Looking for next event in physical models");
68 double next_event_phy = surf_host_model->nextOccuringEvent(NOW);
69 if ((time_delta < 0.0 || next_event_phy < time_delta) && next_event_phy >= 0.0) {
70 time_delta = next_event_phy;
72 if (surf_vm_model != nullptr) {
73 XBT_DEBUG("Looking for next event in virtual models");
74 double next_event_virt = surf_vm_model->nextOccuringEvent(NOW);
75 if ((time_delta < 0.0 || next_event_virt < time_delta) && next_event_virt >= 0.0)
76 time_delta = next_event_virt;
79 XBT_DEBUG("Min for resources (remember that NS3 don't update that value): %f", time_delta);
81 XBT_DEBUG("Looking for next trace event");
83 while (1) { // Handle next occurring events until none remains
84 next_event_date = future_evt_set->next_date();
85 XBT_DEBUG("Next TRACE event: %f", next_event_date);
87 if(! surf_network_model->nextOccuringEventIsIdempotent()){ // NS3, I see you
88 if (next_event_date!=-1.0 && time_delta!=-1.0) {
89 time_delta = MIN(next_event_date - NOW, time_delta);
91 time_delta = MAX(next_event_date - NOW, time_delta); // Get the positive component
94 XBT_DEBUG("Run the NS3 network at most %fs", time_delta);
95 // run until min or next flow
96 model_next_action_end = surf_network_model->nextOccuringEvent(time_delta);
98 XBT_DEBUG("Min for network : %f", model_next_action_end);
99 if(model_next_action_end>=0.0)
100 time_delta = model_next_action_end;
103 if (next_event_date < 0.0) {
104 XBT_DEBUG("no next TRACE event. Stop searching for it");
108 if ((time_delta == -1.0) || (next_event_date > NOW + time_delta))
109 break; // next event occurs after the next resource change, bail out
111 XBT_DEBUG("Updating models (min = %g, NOW = %g, next_event_date = %g)", time_delta, NOW, next_event_date);
113 while ((event = future_evt_set->pop_leq(next_event_date, &value, &resource))) {
114 if (resource->isUsed() || xbt_dict_get_or_null(watched_hosts_lib, resource->getName())) {
115 time_delta = next_event_date - NOW;
116 XBT_DEBUG("This event invalidates the next_occuring_event() computation of models. Next event set to %f", time_delta);
118 // 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
119 double round_start = NOW;
120 NOW = next_event_date;
121 /* update state of the corresponding resource to the new value. Does not touch lmm.
122 It will be modified if needed when updating actions */
123 XBT_DEBUG("Calling update_resource_state for resource %s", resource->getName());
124 resource->apply_event(event, value);
129 /* FIXME: Moved this test to here to avoid stopping simulation if there are actions running on cpus and all cpus are with availability = 0.
130 * This may cause an infinite loop if one cpu has a trace with periodicity = 0 and the other a trace with periodicity > 0.
131 * The options are: all traces with same periodicity(0 or >0) or we need to change the way how the events are managed */
132 if (time_delta == -1.0) {
133 XBT_DEBUG("No next event at all. Bail out now.");
137 XBT_DEBUG("Duration set to %f", time_delta);
139 // Bump the time: jump into the future
140 NOW = NOW + time_delta;
142 // Inform the models of the date change
143 for (auto model : *all_existing_models) {
144 model->updateActionsState(NOW, time_delta);
147 TRACE_paje_dump_buffer (0);
156 surf_action_t surf_model_extract_done_action_set(surf_model_t model){
157 if (model->getDoneActionSet()->empty())
159 surf_action_t res = &model->getDoneActionSet()->front();
160 model->getDoneActionSet()->pop_front();
164 surf_action_t surf_model_extract_failed_action_set(surf_model_t model){
165 if (model->getFailedActionSet()->empty())
167 surf_action_t res = &model->getFailedActionSet()->front();
168 model->getFailedActionSet()->pop_front();
172 int surf_model_running_action_set_size(surf_model_t model){
173 return model->getRunningActionSet()->size();
176 surf_action_t surf_host_sleep(sg_host_t host, double duration){
177 return host->pimpl_cpu->sleep(duration);
180 surf_action_t surf_host_open(sg_host_t host, const char* fullpath){
181 return host->pimpl_->open(fullpath);
184 surf_action_t surf_host_close(sg_host_t host, surf_file_t fd){
185 return host->pimpl_->close(fd);
188 int surf_host_unlink(sg_host_t host, surf_file_t fd){
189 return host->pimpl_->unlink(fd);
192 size_t surf_host_get_size(sg_host_t host, surf_file_t fd){
193 return host->pimpl_->getSize(fd);
196 surf_action_t surf_host_read(sg_host_t host, surf_file_t fd, sg_size_t size){
197 return host->pimpl_->read(fd, size);
200 surf_action_t surf_host_write(sg_host_t host, surf_file_t fd, sg_size_t size){
201 return host->pimpl_->write(fd, size);
204 xbt_dynar_t surf_host_get_info(sg_host_t host, surf_file_t fd){
205 return host->pimpl_->getInfo(fd);
208 size_t surf_host_file_tell(sg_host_t host, surf_file_t fd){
209 return host->pimpl_->fileTell(fd);
212 int surf_host_file_seek(sg_host_t host, surf_file_t fd,
213 sg_offset_t offset, int origin){
214 return host->pimpl_->fileSeek(fd, offset, origin);
217 int surf_host_file_move(sg_host_t host, surf_file_t fd, const char* fullpath){
218 return host->pimpl_->fileMove(fd, fullpath);
221 void surf_vm_suspend(sg_host_t vm){
222 get_casted_vm(vm)->suspend();
225 void surf_vm_resume(sg_host_t vm){
226 get_casted_vm(vm)->resume();
229 void surf_vm_save(sg_host_t vm){
230 get_casted_vm(vm)->save();
233 void surf_vm_restore(sg_host_t vm){
234 get_casted_vm(vm)->restore();
237 void surf_vm_migrate(sg_host_t vm, sg_host_t ind_vm_ws_dest){
238 get_casted_vm(vm)->migrate(ind_vm_ws_dest);
241 sg_host_t surf_vm_get_pm(sg_host_t vm){
242 return get_casted_vm(vm)->getPm();
245 void surf_vm_set_bound(sg_host_t vm, double bound){
246 get_casted_vm(vm)->setBound(bound);
249 xbt_dict_t surf_storage_get_content(surf_resource_t resource){
250 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->getContent();
253 sg_size_t surf_storage_get_size(surf_resource_t resource){
254 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->getSize();
257 sg_size_t surf_storage_get_free_size(surf_resource_t resource){
258 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->getFreeSize();
261 sg_size_t surf_storage_get_used_size(surf_resource_t resource){
262 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->getUsedSize();
265 xbt_dict_t surf_storage_get_properties(surf_resource_t resource){
266 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->getProperties();
269 const char* surf_storage_get_host(surf_resource_t resource){
270 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->attach_;
273 void surf_cpu_action_set_bound(surf_action_t action, double bound) {
274 static_cast<simgrid::surf::CpuAction*>(action)->setBound(bound);
277 surf_file_t surf_storage_action_get_file(surf_action_t action){
278 return static_cast<simgrid::surf::StorageAction*>(action)->file_;