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