1 /* Copyright (c) 2004-2015. 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 "surf_interface.hpp"
8 #include "cpu_interface.hpp"
10 #include "network_interface.hpp"
11 #include "simgrid/s4u/engine.hpp"
12 #include "simgrid/sg_config.h"
13 #include "src/instr/instr_private.h" // TRACE_is_enabled(). FIXME: remove by subscribing tracing to the surf signals
14 #include "src/internal_config.h"
15 #include "src/kernel/routing/NetPoint.hpp"
16 #include "src/simix/smx_host_private.h"
17 #include "src/surf/HostImpl.hpp"
18 #include "surf_private.h"
21 XBT_LOG_NEW_CATEGORY(surf, "All SURF categories");
22 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_kernel, surf, "Logging specific to SURF (kernel)");
28 std::vector<surf_model_t> * all_existing_models = nullptr; /* to destroy models correctly */
30 simgrid::trace_mgr::future_evt_set *future_evt_set = nullptr;
31 std::vector<std::string> surf_path;
32 std::vector<simgrid::s4u::Host*> host_that_restart;
33 xbt_dict_t watched_hosts_lib;
38 simgrid::xbt::signal<void(void)> surfExitCallbacks;
43 #include <simgrid/plugins/energy.h> // FIXME: this plugin should not be linked to the core
44 #include <simgrid/plugins/load.h> // FIXME: this plugin should not be linked to the core
46 s_surf_model_description_t surf_plugin_description[] = {
47 {"Energy", "Cpu energy consumption.", &sg_host_energy_plugin_init},
48 {"Load", "Cpu load.", &sg_host_load_plugin_init},
49 {nullptr, nullptr, nullptr} /* this array must be nullptr terminated */
52 /* Don't forget to update the option description in smx_config when you change this */
53 s_surf_model_description_t surf_network_model_description[] = {
54 {"LV08", "Realistic network analytic model (slow-start modeled by multiplying latency by 10.4, bandwidth by .92; bottleneck sharing uses a payload of S=8775 for evaluating RTT). ",
55 &surf_network_model_init_LegrandVelho},
57 "Simplistic network model where all communication take a constant time (one second). This model provides the lowest realism, but is (marginally) faster.",
58 &surf_network_model_init_Constant},
59 {"SMPI", "Realistic network model specifically tailored for HPC settings (accurate modeling of slow start with correction factors on three intervals: < 1KiB, < 64 KiB, >= 64 KiB)",
60 &surf_network_model_init_SMPI},
61 {"IB", "Realistic network model specifically tailored for HPC settings, with Infiniband contention model",
62 &surf_network_model_init_IB},
63 {"CM02", "Legacy network analytic model (Very similar to LV08, but without corrective factors. The timings of small messages are thus poorly modeled).",
64 &surf_network_model_init_CM02},
65 {"NS3", "Network pseudo-model using the NS3 tcp model instead of an analytic model", &surf_network_model_init_NS3},
66 {"Reno", "Model from Steven H. Low using lagrange_solve instead of lmm_solve (experts only; check the code for more info).",
67 &surf_network_model_init_Reno},
68 {"Reno2", "Model from Steven H. Low using lagrange_solve instead of lmm_solve (experts only; check the code for more info).",
69 &surf_network_model_init_Reno2},
70 {"Vegas", "Model from Steven H. Low using lagrange_solve instead of lmm_solve (experts only; check the code for more info).",
71 &surf_network_model_init_Vegas},
72 {nullptr, nullptr, nullptr} /* this array must be nullptr terminated */
76 void surf_network_model_init_SMPI() {
77 xbt_die("Please activate SMPI support in cmake to use the SMPI network model.");
79 void surf_network_model_init_IB() {
80 xbt_die("Please activate SMPI support in cmake to use the IB network model.");
84 void surf_network_model_init_NS3() {
85 xbt_die("Please activate NS3 support in cmake and install the dependencies to use the NS3 network model.");
89 s_surf_model_description_t surf_cpu_model_description[] = {
90 {"Cas01", "Simplistic CPU model (time=size/power).", &surf_cpu_model_init_Cas01},
91 {nullptr, nullptr, nullptr} /* this array must be nullptr terminated */
94 s_surf_model_description_t surf_host_model_description[] = {
95 {"default", "Default host model. Currently, CPU:Cas01 and network:LV08 (with cross traffic enabled)", &surf_host_model_init_current_default},
96 {"compound", "Host model that is automatically chosen if you change the network and CPU models", &surf_host_model_init_compound},
97 {"ptask_L07", "Host model somehow similar to Cas01+CM02 but allowing parallel tasks", &surf_host_model_init_ptask_L07},
98 {nullptr, nullptr, nullptr} /* this array must be nullptr terminated */
101 s_surf_model_description_t surf_optimization_mode_description[] = {
102 {"Lazy", "Lazy action management (partial invalidation in lmm + heap in action remaining).", nullptr},
103 {"TI", "Trace integration. Highly optimized mode when using availability traces (only available for the Cas01 CPU model for now).", nullptr},
104 {"Full", "Full update of remaining and variables. Slow but may be useful when debugging.", nullptr},
105 {nullptr, nullptr, nullptr} /* this array must be nullptr terminated */
108 s_surf_model_description_t surf_storage_model_description[] = {
109 {"default", "Simplistic storage model.", &surf_storage_model_init_default},
110 {nullptr, nullptr, nullptr} /* this array must be nullptr terminated */
113 #if HAVE_THREAD_CONTEXTS
114 static xbt_parmap_t surf_parmap = nullptr; /* parallel map on models */
119 double surf_get_clock()
125 # define FILE_DELIM "\\"
127 # define FILE_DELIM "/" /* FIXME: move to better location */
130 FILE *surf_fopen(const char *name, const char *mode)
133 FILE *file = nullptr;
137 if (__surf_is_absolute_file_path(name)) /* don't mess with absolute file names */
138 return fopen(name, mode);
140 /* search relative files in the path */
141 for (auto path_elm : surf_path) {
142 buff = bprintf("%s" FILE_DELIM "%s", path_elm.c_str(), name);
143 file = fopen(buff, mode);
155 static const char *disk_drives_letter_table[MAX_DRIVE] = {
156 "A:\\","B:\\","C:\\","D:\\","E:\\","F:\\","G:\\","H:\\","I:\\","J:\\","K:\\","L:\\","M:\\",
157 "N:\\","O:\\","P:\\","Q:\\","R:\\","S:\\","T:\\","U:\\","V:\\","W:\\","X:\\","Y:\\","Z:\\"
162 * Returns the initial path. On Windows the initial path is
163 * the current directory for the current process in the other
164 * case the function returns "./" that represents the current
165 * directory on Unix/Linux platforms.
168 const char *__surf_get_initial_path()
173 char current_directory[MAX_PATH + 1] = { 0 };
174 unsigned int len = GetCurrentDirectory(MAX_PATH + 1, current_directory);
175 char root[4] = { 0 };
180 strncpy(root, current_directory, 3);
182 for (i = 0; i < MAX_DRIVE; i++) {
183 if (toupper(root[0]) == disk_drives_letter_table[i][0])
184 return disk_drives_letter_table[i];
193 /* The __surf_is_absolute_file_path() returns 1 if
194 * file_path is a absolute file path, in the other
195 * case the function returns 0.
197 int __surf_is_absolute_file_path(const char *file_path)
200 WIN32_FIND_DATA wfd = { 0 };
201 HANDLE hFile = FindFirstFile(file_path, &wfd);
203 if (INVALID_HANDLE_VALUE == hFile)
209 return (file_path[0] == '/');
213 /** Displays the long description of all registered models, and quit */
214 void model_help(const char *category, s_surf_model_description_t * table)
216 printf("Long description of the %s models accepted by this simulator:\n", category);
217 for (int i = 0; table[i].name; i++)
218 printf(" %s: %s\n", table[i].name, table[i].description);
221 int find_model_description(s_surf_model_description_t * table,
225 char *name_list = nullptr;
227 for (i = 0; table[i].name; i++)
228 if (!strcmp(name, table[i].name)) {
232 xbt_die("No model is valid! This is a bug.");
233 name_list = xbt_strdup(table[0].name);
234 for (i = 1; table[i].name; i++) {
235 name_list = (char *) xbt_realloc(name_list, strlen(name_list) + strlen(table[i].name) + 3);
236 strncat(name_list, ", ", 2);
237 strncat(name_list, table[i].name, strlen(table[i].name));
239 xbt_die("Model '%s' is invalid! Valid models are: %s.", name, name_list);
243 static inline void surf_storage_free(void *r)
245 delete static_cast<simgrid::surf::Storage*>(r);
248 void sg_version_check(int lib_version_major,int lib_version_minor,int lib_version_patch) {
249 if ((lib_version_major != SIMGRID_VERSION_MAJOR) || (lib_version_minor != SIMGRID_VERSION_MINOR)) {
251 "FATAL ERROR: Your program was compiled with SimGrid version %d.%d.%d, "
252 "and then linked against SimGrid %d.%d.%d. Please fix this.\n",
253 lib_version_major,lib_version_minor,lib_version_patch,
254 SIMGRID_VERSION_MAJOR,SIMGRID_VERSION_MINOR,SIMGRID_VERSION_PATCH);
257 if (lib_version_patch != SIMGRID_VERSION_PATCH) {
258 if(SIMGRID_VERSION_PATCH >= 90 || lib_version_patch >=90){
260 "FATAL ERROR: Your program was compiled with SimGrid version %d.%d.%d, "
261 "and then linked against SimGrid %d.%d.%d. \n"
262 "One of them is a development version, and should not be mixed with the stable release. Please fix this.\n",
263 lib_version_major,lib_version_minor,lib_version_patch,
264 SIMGRID_VERSION_MAJOR,SIMGRID_VERSION_MINOR,SIMGRID_VERSION_PATCH);
268 "Warning: Your program was compiled with SimGrid version %d.%d.%d, "
269 "and then linked against SimGrid %d.%d.%d. Proceeding anyway.\n",
270 lib_version_major,lib_version_minor,lib_version_patch,
271 SIMGRID_VERSION_MAJOR,SIMGRID_VERSION_MINOR,SIMGRID_VERSION_PATCH);
275 void sg_version_get(int* ver_major, int* ver_minor, int* ver_patch)
277 *ver_major = SIMGRID_VERSION_MAJOR;
278 *ver_minor = SIMGRID_VERSION_MINOR;
279 *ver_patch = SIMGRID_VERSION_PATCH;
284 std::printf("This program was linked against %s (git: %s), found in %s.\n",
285 SIMGRID_VERSION_STRING, SIMGRID_GIT_VERSION, SIMGRID_INSTALL_PREFIX);
288 std::printf(" Model-checking support compiled in.\n");
290 std::printf(" Model-checking support disabled at compilation.\n");
294 std::printf(" NS3 support compiled in.\n");
296 std::printf(" NS3 support disabled at compilation.\n");
300 std::printf(" Jedule support compiled in.\n");
302 std::printf(" Jedule support disabled at compilation.\n");
306 std::printf(" Lua support compiled in.\n");
308 std::printf(" Lua support disabled at compilation.\n");
312 std::printf(" Mallocator support compiled in.\n");
314 std::printf(" Mallocator support disabled at compilation.\n");
317 std::printf("\nTo cite SimGrid in a publication, please use:\n"
318 " Henri Casanova, Arnaud Giersch, Arnaud Legrand, Martin Quinson, Frédéric Suter. \n"
319 " Versatile, Scalable, and Accurate Simulation of Distributed Applications and Platforms. \n"
320 " Journal of Parallel and Distributed Computing, Elsevier, 2014, 74 (10), pp.2899-2917.\n");
321 std::printf("The pdf file and a BibTeX entry for LaTeX users can be found at http://hal.inria.fr/hal-01017319\n");
324 void surf_init(int *argc, char **argv)
326 if (USER_HOST_LEVEL != -1) // Already initialized
329 XBT_DEBUG("Create all Libs");
330 USER_HOST_LEVEL = simgrid::s4u::Host::extension_create(nullptr);
332 storage_lib = xbt_lib_new();
333 storage_type_lib = xbt_lib_new();
334 file_lib = xbt_lib_new();
335 watched_hosts_lib = xbt_dict_new_homogeneous(nullptr);
337 XBT_DEBUG("Add SURF levels");
338 SURF_STORAGE_LEVEL = xbt_lib_add_level(storage_lib,surf_storage_free);
340 xbt_init(argc, argv);
341 if (!all_existing_models)
342 all_existing_models = new std::vector<simgrid::surf::Model*>();
344 future_evt_set = new simgrid::trace_mgr::future_evt_set();
346 TRACE_add_start_function(TRACE_surf_alloc);
347 TRACE_add_end_function(TRACE_surf_release);
349 sg_config_init(argc, argv);
357 TRACE_end(); /* Just in case it was not called by the upper layer (or there is no upper layer) */
360 xbt_lib_free(&storage_lib);
362 xbt_lib_free(&storage_type_lib);
363 xbt_lib_free(&file_lib);
364 xbt_dict_free(&watched_hosts_lib);
366 for (auto model : *all_existing_models)
368 delete all_existing_models;
370 simgrid::surf::surfExitCallbacks();
372 if (future_evt_set) {
373 delete future_evt_set;
374 future_evt_set = nullptr;
377 #if HAVE_THREAD_CONTEXTS
378 xbt_parmap_destroy(surf_parmap);
383 simgrid::s4u::Engine::shutdown();
385 NOW = 0; /* Just in case the user plans to restart the simulation afterward */
396 : maxminSystem_(nullptr)
398 readyActionSet_ = new ActionList();
399 runningActionSet_ = new ActionList();
400 failedActionSet_ = new ActionList();
401 doneActionSet_ = new ActionList();
403 modifiedSet_ = nullptr;
404 actionHeap_ = nullptr;
405 updateMechanism_ = UM_UNDEFINED;
406 selectiveUpdate_ = 0;
410 delete readyActionSet_;
411 delete runningActionSet_;
412 delete failedActionSet_;
413 delete doneActionSet_;
416 double Model::nextOccuringEvent(double now)
418 //FIXME: set the good function once and for all
419 if (updateMechanism_ == UM_LAZY)
420 return nextOccuringEventLazy(now);
421 else if (updateMechanism_ == UM_FULL)
422 return nextOccuringEventFull(now);
424 xbt_die("Invalid cpu update mechanism!");
427 double Model::nextOccuringEventLazy(double now)
429 XBT_DEBUG("Before share resources, the size of modified actions set is %zd", modifiedSet_->size());
430 lmm_solve(maxminSystem_);
431 XBT_DEBUG("After share resources, The size of modified actions set is %zd", modifiedSet_->size());
433 while(!modifiedSet_->empty()) {
434 Action *action = &(modifiedSet_->front());
435 modifiedSet_->pop_front();
436 int max_dur_flag = 0;
438 if (action->getStateSet() != runningActionSet_)
441 /* bogus priority, skip it */
442 if (action->getPriority() <= 0 || action->getHat()==LATENCY)
445 action->updateRemainingLazy(now);
448 double share = lmm_variable_getvalue(action->getVariable());
451 double time_to_completion;
452 if (action->getRemains() > 0) {
453 time_to_completion = action->getRemainsNoUpdate() / share;
455 time_to_completion = 0.0;
457 min = now + time_to_completion; // when the task will complete if nothing changes
460 if ((action->getMaxDuration() != NO_MAX_DURATION) &&
461 (min == -1 || action->getStartTime() + action->getMaxDuration() < min)) {
462 // when the task will complete anyway because of the deadline if any
463 min = action->getStartTime() + action->getMaxDuration();
468 XBT_DEBUG("Action(%p) corresponds to variable %d", action, action->getVariable()->id_int);
470 XBT_DEBUG("Action(%p) Start %f. May finish at %f (got a share of %f). Max_duration %f", action,
471 action->getStartTime(), min, share,
472 action->getMaxDuration());
475 action->heapUpdate(actionHeap_, min, max_dur_flag ? MAX_DURATION : NORMAL);
476 XBT_DEBUG("Insert at heap action(%p) min %f now %f", action, min,
478 } else DIE_IMPOSSIBLE;
481 //hereafter must have already the min value for this resource model
482 if (xbt_heap_size(actionHeap_) > 0) {
483 double min = xbt_heap_maxkey(actionHeap_) - now;
484 XBT_DEBUG("minimum with the HEAP %f", min);
487 XBT_DEBUG("The HEAP is empty, thus returning -1");
492 double Model::nextOccuringEventFull(double /*now*/) {
493 maxminSystem_->solve_fun(maxminSystem_);
496 for (auto it(getRunningActionSet()->begin()), itend(getRunningActionSet()->end()); it != itend ; ++it) {
497 Action *action = &*it;
498 double value = lmm_variable_getvalue(action->getVariable());
500 if (action->getRemains() > 0)
501 value = action->getRemainsNoUpdate() / value;
504 if (min < 0 || value < min) {
506 XBT_DEBUG("Updating min (value) with %p: %f", action, min);
509 if ((action->getMaxDuration() >= 0) && (min<0 || action->getMaxDuration() < min)) {
510 min = action->getMaxDuration();
511 XBT_DEBUG("Updating min (duration) with %p: %f", action, min);
514 XBT_DEBUG("min value : %f", min);
519 void Model::updateActionsState(double now, double delta)
521 if (updateMechanism_ == UM_FULL)
522 updateActionsStateFull(now, delta);
523 else if (updateMechanism_ == UM_LAZY)
524 updateActionsStateLazy(now, delta);
526 xbt_die("Invalid cpu update mechanism!");
529 void Model::updateActionsStateLazy(double /*now*/, double /*delta*/)
534 void Model::updateActionsStateFull(double /*now*/, double /*delta*/)
549 Resource::Resource(Model* model, const char* name, lmm_constraint_t constraint)
550 : name_(name), model_(model), constraint_(constraint)
553 Resource::~Resource() = default;
555 bool Resource::isOn() const {
558 bool Resource::isOff() const {
562 void Resource::turnOn()
567 void Resource::turnOff()
572 Model* Resource::model() const
577 const char* Resource::cname() const
579 return name_.c_str();
582 bool Resource::operator==(const Resource &other) const {
583 return name_ == other.name_;
586 lmm_constraint_t Resource::constraint() const
598 const char *surf_action_state_names[6] = {
600 "SURF_ACTION_RUNNING",
601 "SURF_ACTION_FAILED",
603 "SURF_ACTION_TO_FREE",
604 "SURF_ACTION_NOT_IN_THE_SYSTEM"
607 /* added to manage the communication action's heap */
608 void surf_action_lmm_update_index_heap(void *action, int i) {
609 static_cast<simgrid::surf::Action*>(action)->updateIndexHeap(i);
615 Action::Action(simgrid::surf::Model* model, double cost, bool failed) : Action(model, cost, failed, nullptr)
619 Action::Action(simgrid::surf::Model* model, double cost, bool failed, lmm_variable_t var)
620 : remains_(cost), start_(surf_get_clock()), cost_(cost), model_(model), variable_(var)
623 stateSet_ = getModel()->getFailedActionSet();
625 stateSet_ = getModel()->getRunningActionSet();
627 stateSet_->push_back(*this);
634 void Action::finish() {
635 finishTime_ = surf_get_clock();
638 Action::State Action::getState()
640 if (stateSet_ == model_->getReadyActionSet())
641 return Action::State::ready;
642 if (stateSet_ == model_->getRunningActionSet())
643 return Action::State::running;
644 if (stateSet_ == model_->getFailedActionSet())
645 return Action::State::failed;
646 if (stateSet_ == model_->getDoneActionSet())
647 return Action::State::done;
648 return Action::State::not_in_the_system;
651 void Action::setState(Action::State state)
653 stateSet_->erase(stateSet_->iterator_to(*this));
655 case Action::State::ready:
656 stateSet_ = model_->getReadyActionSet();
658 case Action::State::running:
659 stateSet_ = model_->getRunningActionSet();
661 case Action::State::failed:
662 stateSet_ = model_->getFailedActionSet();
664 case Action::State::done:
665 stateSet_ = model_->getDoneActionSet();
672 stateSet_->push_back(*this);
675 double Action::getBound()
677 return (variable_) ? lmm_variable_getbound(variable_) : 0;
680 void Action::setBound(double bound)
682 XBT_IN("(%p,%g)", this, bound);
684 lmm_update_variable_bound(getModel()->getMaxminSystem(), variable_, bound);
686 if (getModel()->getUpdateMechanism() == UM_LAZY && getLastUpdate()!=surf_get_clock())
687 heapRemove(getModel()->getActionHeap());
691 double Action::getStartTime()
696 double Action::getFinishTime()
698 /* keep the function behavior, some models (cpu_ti) change the finish time before the action end */
699 return remains_ == 0 ? finishTime_ : -1;
702 void Action::setData(void* data)
707 void Action::setCategory(const char *category)
709 category_ = xbt_strdup(category);
716 void Action::setMaxDuration(double duration)
718 maxDuration_ = duration;
719 if (getModel()->getUpdateMechanism() == UM_LAZY) // remove action from the heap
720 heapRemove(getModel()->getActionHeap());
723 void Action::gapRemove() {}
725 void Action::setPriority(double priority)
727 XBT_IN("(%p,%g)", this, priority);
728 priority_ = priority;
729 lmm_update_variable_weight(getModel()->getMaxminSystem(), getVariable(), priority);
731 if (getModel()->getUpdateMechanism() == UM_LAZY)
732 heapRemove(getModel()->getActionHeap());
736 void Action::cancel(){
737 setState(Action::State::failed);
738 if (getModel()->getUpdateMechanism() == UM_LAZY) {
739 if (action_lmm_hook.is_linked())
740 getModel()->getModifiedSet()->erase(getModel()->getModifiedSet()->iterator_to(*this));
741 heapRemove(getModel()->getActionHeap());
748 if (action_hook.is_linked())
749 stateSet_->erase(stateSet_->iterator_to(*this));
751 lmm_variable_free(getModel()->getMaxminSystem(), getVariable());
752 if (getModel()->getUpdateMechanism() == UM_LAZY) {
753 /* remove from heap */
754 heapRemove(getModel()->getActionHeap());
755 if (action_lmm_hook.is_linked())
756 getModel()->getModifiedSet()->erase(getModel()->getModifiedSet()->iterator_to(*this));
764 void Action::suspend()
766 XBT_IN("(%p)", this);
767 if (suspended_ != 2) {
768 lmm_update_variable_weight(getModel()->getMaxminSystem(), getVariable(), 0.0);
769 if (getModel()->getUpdateMechanism() == UM_LAZY){
770 heapRemove(getModel()->getActionHeap());
771 if (getModel()->getUpdateMechanism() == UM_LAZY && stateSet_ == getModel()->getRunningActionSet() && priority_ > 0){
772 //If we have a lazy model, we need to update the remaining value accordingly
773 updateRemainingLazy(surf_get_clock());
781 void Action::resume()
783 XBT_IN("(%p)", this);
784 if (suspended_ != 2) {
785 lmm_update_variable_weight(getModel()->getMaxminSystem(), getVariable(), priority_);
787 if (getModel()->getUpdateMechanism() == UM_LAZY)
788 heapRemove(getModel()->getActionHeap());
793 bool Action::isSuspended()
795 return suspended_ == 1;
797 /* insert action on heap using a given key and a hat (heap_action_type)
798 * a hat can be of three types for communications:
800 * NORMAL = this is a normal heap entry stating the date to finish transmitting
801 * LATENCY = this is a heap entry to warn us when the latency is payed
802 * MAX_DURATION =this is a heap entry to warn us when the max_duration limit is reached
804 void Action::heapInsert(xbt_heap_t heap, double key, enum heap_action_type hat)
807 xbt_heap_push(heap, this, key);
810 void Action::heapRemove(xbt_heap_t heap)
813 if (indexHeap_ >= 0) {
814 xbt_heap_remove(heap, indexHeap_);
818 void Action::heapUpdate(xbt_heap_t heap, double key, enum heap_action_type hat)
821 if (indexHeap_ >= 0) {
822 xbt_heap_update(heap, indexHeap_, key);
824 xbt_heap_push(heap, this, key);
828 void Action::updateIndexHeap(int i) {
832 double Action::getRemains()
834 XBT_IN("(%p)", this);
835 /* update remains before return it */
836 if (getModel()->getUpdateMechanism() == UM_LAZY) /* update remains before return it */
837 updateRemainingLazy(surf_get_clock());
842 double Action::getRemainsNoUpdate()
847 //FIXME split code in the right places
848 void Action::updateRemainingLazy(double now)
852 if(getModel() == surf_network_model)
859 xbt_assert(stateSet_ == getModel()->getRunningActionSet(), "You're updating an action that is not running.");
860 xbt_assert(priority_ > 0, "You're updating an action that seems suspended.");
863 delta = now - lastUpdate_;
866 XBT_DEBUG("Updating action(%p): remains was %f, last_update was: %f", this, remains_, lastUpdate_);
867 double_update(&remains_, lastValue_ * delta, sg_surf_precision*sg_maxmin_precision);
869 if (getModel() == surf_cpu_model_pm && TRACE_is_enabled()) {
870 simgrid::surf::Resource *cpu = static_cast<simgrid::surf::Resource*>(
871 lmm_constraint_id(lmm_get_cnst_from_var(getModel()->getMaxminSystem(), getVariable(), 0)));
872 TRACE_surf_host_set_utilization(cpu->cname(), getCategory(), lastValue_, lastUpdate_, now - lastUpdate_);
874 XBT_DEBUG("Updating action(%p): remains is now %f", this, remains_);
877 if(getModel() == surf_network_model)
879 if (maxDuration_ != NO_MAX_DURATION)
880 double_update(&maxDuration_, delta, sg_surf_precision);
882 //FIXME: duplicated code
883 if ((remains_ <= 0) &&
884 (lmm_get_variable_weight(getVariable()) > 0)) {
886 setState(Action::State::done);
887 heapRemove(getModel()->getActionHeap());
888 } else if (((maxDuration_ != NO_MAX_DURATION)
889 && (maxDuration_ <= 0))) {
891 setState(Action::State::done);
892 heapRemove(getModel()->getActionHeap());
897 lastValue_ = lmm_variable_getvalue(getVariable());