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>());
30 void surf_presolve(void)
32 double next_event_date = -1.0;
33 tmgr_trace_iterator_t event = NULL;
35 simgrid::surf::Resource *resource = NULL;
36 simgrid::surf::Model *model = NULL;
39 XBT_DEBUG ("Consume all trace events occurring before the starting time.");
40 while ((next_event_date = future_evt_set->next_date()) != -1.0) {
41 if (next_event_date > NOW)
44 while ((event = future_evt_set->pop_leq(next_event_date, &value, &resource))) {
46 resource->apply_event(event, value);
51 XBT_DEBUG ("Set every models in the right state by updating them to 0.");
52 xbt_dynar_foreach(all_existing_models, iter, model)
53 model->updateActionsState(NOW, 0.0);
56 double surf_solve(double max_date)
58 double time_delta = -1.0; /* duration */
59 double next_event_date = -1.0;
60 double model_next_action_end = -1.0;
62 simgrid::surf::Resource *resource = NULL;
63 simgrid::surf::Model *model = NULL;
64 tmgr_trace_iterator_t event = NULL;
68 xbt_assert(max_date > NOW,"You asked to simulate up to %f, but that's in the past already", max_date);
70 time_delta = max_date - NOW;
73 /* Physical models MUST be resolved first */
74 XBT_DEBUG("Looking for next event in physical models");
75 double next_event_phy = surf_host_model->next_occuring_event(NOW);
76 if ((time_delta < 0.0 || next_event_phy < time_delta) && next_event_phy >= 0.0) {
77 time_delta = next_event_phy;
79 if (surf_vm_model != NULL) {
80 XBT_DEBUG("Looking for next event in virtual models");
81 double next_event_virt = surf_vm_model->next_occuring_event(NOW);
82 if ((time_delta < 0.0 || next_event_virt < time_delta) && next_event_virt >= 0.0)
83 time_delta = next_event_virt;
86 XBT_DEBUG("Min for resources (remember that NS3 don't update that value): %f", time_delta);
88 XBT_DEBUG("Looking for next trace event");
90 while (1) { // Handle next occurring events until none remains
91 next_event_date = future_evt_set->next_date();
92 XBT_DEBUG("Next TRACE event: %f", next_event_date);
94 if(! surf_network_model->next_occuring_event_isIdempotent()){ // NS3, I see you
95 if (next_event_date!=-1.0 && time_delta!=-1.0) {
96 time_delta = MIN(next_event_date - NOW, time_delta);
98 time_delta = MAX(next_event_date - NOW, time_delta); // Get the positive component
101 XBT_DEBUG("Run the NS3 network at most %fs", time_delta);
102 // run until min or next flow
103 model_next_action_end = surf_network_model->next_occuring_event(time_delta);
105 XBT_DEBUG("Min for network : %f", model_next_action_end);
106 if(model_next_action_end>=0.0)
107 time_delta = model_next_action_end;
110 if (next_event_date < 0.0) {
111 XBT_DEBUG("no next TRACE event. Stop searching for it");
115 if ((time_delta == -1.0) || (next_event_date > NOW + time_delta))
116 break; // next event occurs after the next resource change, bail out
118 XBT_DEBUG("Updating models (min = %g, NOW = %g, next_event_date = %g)", time_delta, NOW, next_event_date);
120 while ((event = future_evt_set->pop_leq(next_event_date, &value, &resource))) {
121 if (resource->isUsed() || xbt_dict_get_or_null(watched_hosts_lib, resource->getName())) {
122 time_delta = next_event_date - NOW;
123 XBT_DEBUG("This event invalidates the next_occuring_event() computation of models. Next event set to %f", time_delta);
125 // 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
126 double round_start = NOW;
127 NOW = next_event_date;
128 /* update state of the corresponding resource to the new value. Does not touch lmm.
129 It will be modified if needed when updating actions */
130 XBT_DEBUG("Calling update_resource_state for resource %s", resource->getName());
131 resource->apply_event(event, value);
136 /* FIXME: Moved this test to here to avoid stopping simulation if there are actions running on cpus and all cpus are with availability = 0.
137 * This may cause an infinite loop if one cpu has a trace with periodicity = 0 and the other a trace with periodicity > 0.
138 * The options are: all traces with same periodicity(0 or >0) or we need to change the way how the events are managed */
139 if (time_delta == -1.0) {
140 XBT_DEBUG("No next event at all. Bail out now.");
144 XBT_DEBUG("Duration set to %f", time_delta);
146 // Bump the time: jump into the future
147 NOW = NOW + time_delta;
149 // Inform the models of the date change
150 xbt_dynar_foreach(all_existing_models, iter, model) {
151 model->updateActionsState(NOW, time_delta);
154 TRACE_paje_dump_buffer (0);
163 surf_action_t surf_model_extract_done_action_set(surf_model_t model){
164 if (model->getDoneActionSet()->empty())
166 surf_action_t res = &model->getDoneActionSet()->front();
167 model->getDoneActionSet()->pop_front();
171 surf_action_t surf_model_extract_failed_action_set(surf_model_t model){
172 if (model->getFailedActionSet()->empty())
174 surf_action_t res = &model->getFailedActionSet()->front();
175 model->getFailedActionSet()->pop_front();
179 int surf_model_running_action_set_size(surf_model_t model){
180 return model->getRunningActionSet()->size();
183 void surf_vm_model_create(const char *name, sg_host_t ind_phys_host){
184 surf_vm_model->createVM(name, ind_phys_host);
187 surf_action_t surf_network_model_communicate(surf_network_model_t model, sg_host_t src, sg_host_t dst, double size, double rate){
188 return model->communicate(src->pimpl_netcard, dst->pimpl_netcard, size, rate);
191 surf_action_t surf_host_sleep(sg_host_t host, double duration){
192 return host->pimpl_cpu->sleep(duration);
195 surf_action_t surf_host_open(sg_host_t host, const char* fullpath){
196 return get_casted_host(host)->open(fullpath);
199 surf_action_t surf_host_close(sg_host_t host, surf_file_t fd){
200 return get_casted_host(host)->close(fd);
203 int surf_host_unlink(sg_host_t host, surf_file_t fd){
204 return get_casted_host(host)->unlink(fd);
207 size_t surf_host_get_size(sg_host_t host, surf_file_t fd){
208 return get_casted_host(host)->getSize(fd);
211 surf_action_t surf_host_read(sg_host_t host, surf_file_t fd, sg_size_t size){
212 return get_casted_host(host)->read(fd, size);
215 surf_action_t surf_host_write(sg_host_t host, surf_file_t fd, sg_size_t size){
216 return get_casted_host(host)->write(fd, size);
219 xbt_dynar_t surf_host_get_info(sg_host_t host, surf_file_t fd){
220 return get_casted_host(host)->getInfo(fd);
223 size_t surf_host_file_tell(sg_host_t host, surf_file_t fd){
224 return get_casted_host(host)->fileTell(fd);
227 int surf_host_file_seek(sg_host_t host, surf_file_t fd,
228 sg_offset_t offset, int origin){
229 return get_casted_host(host)->fileSeek(fd, offset, origin);
232 int surf_host_file_move(sg_host_t host, surf_file_t fd, const char* fullpath){
233 return get_casted_host(host)->fileMove(fd, fullpath);
236 void surf_vm_destroy(sg_host_t vm){ // FIXME:DEADCODE
237 vm->pimpl_cpu = nullptr;
238 vm->pimpl_netcard = nullptr;
241 void surf_vm_suspend(sg_host_t vm){
242 get_casted_vm(vm)->suspend();
245 void surf_vm_resume(sg_host_t vm){
246 get_casted_vm(vm)->resume();
249 void surf_vm_save(sg_host_t vm){
250 get_casted_vm(vm)->save();
253 void surf_vm_restore(sg_host_t vm){
254 get_casted_vm(vm)->restore();
257 void surf_vm_migrate(sg_host_t vm, sg_host_t ind_vm_ws_dest){
258 get_casted_vm(vm)->migrate(ind_vm_ws_dest);
261 sg_host_t surf_vm_get_pm(sg_host_t vm){
262 return get_casted_vm(vm)->getPm();
265 void surf_vm_set_bound(sg_host_t vm, double bound){
266 return get_casted_vm(vm)->setBound(bound);
269 void surf_vm_set_affinity(sg_host_t vm, sg_host_t host, unsigned long mask){
270 return get_casted_vm(vm)->setAffinity(host->pimpl_cpu, mask);
273 xbt_dict_t surf_storage_get_content(surf_resource_t resource){
274 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->getContent();
277 sg_size_t surf_storage_get_size(surf_resource_t resource){
278 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->getSize();
281 sg_size_t surf_storage_get_free_size(surf_resource_t resource){
282 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->getFreeSize();
285 sg_size_t surf_storage_get_used_size(surf_resource_t resource){
286 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->getUsedSize();
289 xbt_dict_t surf_storage_get_properties(surf_resource_t resource){
290 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->getProperties();
293 const char* surf_storage_get_host(surf_resource_t resource){
294 return static_cast<simgrid::surf::Storage*>(surf_storage_resource_priv(resource))->p_attach;
297 void surf_cpu_action_set_bound(surf_action_t action, double bound) {
298 static_cast<simgrid::surf::CpuAction*>(action)->setBound(bound);
301 surf_file_t surf_storage_action_get_file(surf_action_t action){
302 return static_cast<simgrid::surf::StorageAction*>(action)->p_file;