1 /* Copyright (c) 2016-2021. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include <simgrid/Exception.hpp>
7 #include <simgrid/kernel/Timer.hpp>
8 #include <simgrid/kernel/routing/NetPoint.hpp>
9 #include <simgrid/kernel/routing/NetZoneImpl.hpp>
10 #include <simgrid/s4u/Host.hpp>
11 #include <simgrid/sg_config.hpp>
14 #include "src/kernel/EngineImpl.hpp"
15 #include "src/kernel/resource/profile/Profile.hpp"
16 #include "src/mc/mc_record.hpp"
17 #include "src/mc/mc_replay.hpp"
18 #include "src/smpi/include/smpi_actor.hpp"
19 #include "src/surf/network_interface.hpp"
20 #include "src/surf/xml/platf.hpp"
21 #include "surf/surf.hpp" //surf_presolve() and surf_solve()
22 #include "xbt/xbt_modinter.h" /* whether initialization was already done */
24 #include <boost/algorithm/string/predicate.hpp>
30 #include "src/mc/remote/AppSide.hpp"
33 XBT_LOG_NEW_DEFAULT_CATEGORY(ker_engine, "Logging specific to Engine (kernel)");
36 EngineImpl* EngineImpl::instance_ = nullptr; /* That singleton is awful too. */
38 config::Flag<double> cfg_breakpoint{"debug/breakpoint",
39 "When non-negative, raise a SIGTRAP after given (simulated) time", -1.0};
40 config::Flag<bool> cfg_verbose_exit{"debug/verbose-exit", "Display the actor status at exit", true};
42 xbt_dynar_t get_actors_addr()
45 return EngineImpl::get_instance()->get_actors_vector();
47 xbt_die("This function is intended to be used when compiling with MC");
51 xbt_dynar_t get_dead_actors_addr()
54 return EngineImpl::get_instance()->get_dead_actors_vector();
56 xbt_die("This function is intended to be used when compiling with MC");
60 constexpr std::initializer_list<std::pair<const char*, context::ContextFactoryInitializer>> context_factories = {
62 {"raw", &context::raw_factory},
64 #if HAVE_UCONTEXT_CONTEXTS
65 {"ucontext", &context::sysv_factory},
67 #if HAVE_BOOST_CONTEXTS
68 {"boost", &context::boost_factory},
70 {"thread", &context::thread_factory},
73 static_assert(context_factories.size() > 0, "No context factories are enabled for this build");
75 // Create the list of possible contexts:
76 static inline std::string contexts_list()
80 for (auto const& factory : context_factories) {
81 res += sep + factory.first;
87 static config::Flag<std::string> context_factory_name("contexts/factory",
88 (std::string("Possible values: ") + contexts_list()).c_str(),
89 context_factories.begin()->first);
92 } // namespace simgrid
94 XBT_ATTRIB_NORETURN static void inthandler(int)
96 if (simgrid::kernel::cfg_verbose_exit) {
97 XBT_INFO("CTRL-C pressed. The current status will be displayed before exit (disable that behavior with option "
98 "'debug/verbose-exit').");
99 simgrid::kernel::EngineImpl::get_instance()->display_all_actor_status();
101 XBT_INFO("CTRL-C pressed, exiting. Hiding the current process status since 'debug/verbose-exit' is set to false.");
107 static void segvhandler(int signum, siginfo_t* siginfo, void* /*context*/)
109 if ((siginfo->si_signo == SIGSEGV && siginfo->si_code == SEGV_ACCERR) || siginfo->si_signo == SIGBUS) {
111 "Access violation or Bus error detected.\n"
112 "This probably comes from a programming error in your code, or from a stack\n"
113 "overflow. If you are certain of your code, try increasing the stack size\n"
114 " --cfg=contexts/stack-size:XXX (current size is %u KiB).\n"
116 "If it does not help, this may have one of the following causes:\n"
117 "a bug in SimGrid, a bug in the OS or a bug in a third-party libraries.\n"
118 "Failing hardware can sometimes generate such errors too.\n"
120 "If you think you've found a bug in SimGrid, please report it along with a\n"
121 "Minimal Working Example (MWE) reproducing your problem and a full backtrace\n"
122 "of the fault captured with gdb or valgrind.\n",
123 simgrid::kernel::context::stack_size / 1024);
124 } else if (siginfo->si_signo == SIGSEGV) {
125 fprintf(stderr, "Segmentation fault.\n");
127 if (smpi_enabled() && smpi_cfg_privatization() == SmpiPrivStrategies::NONE) {
128 #if HAVE_PRIVATIZATION
129 fprintf(stderr, "Try to enable SMPI variable privatization with --cfg=smpi/privatization:yes.\n");
131 fprintf(stderr, "Sadly, your system does not support --cfg=smpi/privatization:yes (yet).\n");
132 #endif /* HAVE_PRIVATIZATION */
134 #endif /* HAVE_SMPI */
140 * Install signal handler for SIGSEGV. Check that nobody has already installed
141 * its own handler. For example, the Java VM does this.
143 static void install_segvhandler()
147 if (simgrid::kernel::context::Context::install_sigsegv_stack(&old_stack, true) == -1) {
148 XBT_WARN("Failed to register alternate signal stack: %s", strerror(errno));
151 if (not(old_stack.ss_flags & SS_DISABLE)) {
152 XBT_DEBUG("An alternate stack was already installed (sp=%p, size=%zu, flags=%x). Restore it.", old_stack.ss_sp,
153 old_stack.ss_size, (unsigned)old_stack.ss_flags);
154 sigaltstack(&old_stack, nullptr);
157 struct sigaction action;
158 struct sigaction old_action;
159 action.sa_sigaction = &segvhandler;
160 action.sa_flags = SA_ONSTACK | SA_RESETHAND | SA_SIGINFO;
161 sigemptyset(&action.sa_mask);
163 /* Linux tend to raise only SIGSEGV where other systems also raise SIGBUS on severe error */
164 for (int sig : {SIGSEGV, SIGBUS}) {
165 if (sigaction(sig, &action, &old_action) == -1) {
166 XBT_WARN("Failed to register signal handler for signal %d: %s", sig, strerror(errno));
169 if ((old_action.sa_flags & SA_SIGINFO) || old_action.sa_handler != SIG_DFL) {
170 XBT_DEBUG("A signal handler was already installed for signal %d (%p). Restore it.", sig,
171 (old_action.sa_flags & SA_SIGINFO) ? (void*)old_action.sa_sigaction : (void*)old_action.sa_handler);
172 sigaction(sig, &old_action, nullptr);
182 EngineImpl::~EngineImpl()
184 /* Since hosts_ is a std::map, the hosts are destroyed in the lexicographic order, which ensures that the output is
187 while (not hosts_.empty())
188 hosts_.begin()->second->destroy();
190 /* Also delete the other data */
191 delete netzone_root_;
192 for (auto const& kv : netpoints_)
195 while (not links_.empty())
196 links_.begin()->second->destroy();
198 for (auto const& kv : mailboxes_)
201 /* Free the remaining data structures */
203 xbt_dynar_free(&actors_vector_);
204 xbt_dynar_free(&dead_actors_vector_);
206 /* clear models before freeing handle, network models can use external callback defined in the handle */
207 models_prio_.clear();
210 void EngineImpl::initialize(int* argc, char** argv)
212 xbt_assert(EngineImpl::instance_ == nullptr,
213 "It is currently forbidden to create more than one instance of kernel::EngineImpl");
214 EngineImpl::instance_ = this;
216 // The communication initialization is done ASAP, as we need to get some init parameters from the MC for different
217 // layers. But simix_global needs to be created, as we send the address of some of its fields to the MC that wants to
218 // read them directly.
219 simgrid::mc::AppSide::initialize();
222 if (xbt_initialized == 0) {
223 xbt_init(argc, argv);
225 sg_config_init(argc, argv);
228 instance_->context_mod_init();
230 /* Prepare to display some more info when dying on Ctrl-C pressing */
231 std::signal(SIGINT, inthandler);
234 install_segvhandler();
237 /* register a function to be called by SURF after the environment creation */
239 s4u::Engine::on_platform_created.connect(surf_presolve);
241 if (config::get_value<bool>("debug/clean-atexit"))
245 void EngineImpl::context_mod_init() const
247 xbt_assert(not instance_->has_context_factory());
249 #if HAVE_SMPI && (defined(__APPLE__) || defined(__NetBSD__))
250 smpi_init_options_internal(false);
251 std::string priv = config::get_value<std::string>("smpi/privatization");
252 if (context_factory_name == "thread" && (priv == "dlopen" || priv == "yes" || priv == "default" || priv == "1")) {
253 XBT_WARN("dlopen+thread broken on Apple and BSD. Switching to raw contexts.");
254 context_factory_name = "raw";
258 #if HAVE_SMPI && defined(__FreeBSD__)
259 smpi_init_options_internal(false);
260 if (context_factory_name == "thread" && config::get_value<std::string>("smpi/privatization") != "no") {
261 XBT_WARN("mmap broken on FreeBSD, but dlopen+thread broken too. Switching to dlopen+raw contexts.");
262 context_factory_name = "raw";
266 /* select the context factory to use to create the contexts */
267 if (context::factory_initializer != nullptr) { // Give Java a chance to hijack the factory mechanism
268 instance_->set_context_factory(context::factory_initializer());
271 /* use the factory specified by --cfg=contexts/factory:value */
272 for (auto const& factory : context_factories)
273 if (context_factory_name == factory.first) {
274 instance_->set_context_factory(factory.second());
278 if (not instance_->has_context_factory()) {
279 XBT_ERROR("Invalid context factory specified. Valid factories on this machine:");
280 #if HAVE_RAW_CONTEXTS
281 XBT_ERROR(" raw: high performance context factory implemented specifically for SimGrid");
283 XBT_ERROR(" (raw contexts were disabled at compilation time on this machine -- check configure logs for details)");
285 #if HAVE_UCONTEXT_CONTEXTS
286 XBT_ERROR(" ucontext: classical system V contexts (implemented with makecontext, swapcontext and friends)");
288 XBT_ERROR(" (ucontext was disabled at compilation time on this machine -- check configure logs for details)");
290 #if HAVE_BOOST_CONTEXTS
291 XBT_ERROR(" boost: this uses the boost libraries context implementation");
293 XBT_ERROR(" (boost was disabled at compilation time on this machine -- check configure logs for details. Did you "
294 "install the libboost-context-dev package?)");
296 XBT_ERROR(" thread: slow portability layer using pthreads as provided by gcc");
297 xbt_die("Please use a valid factory.");
301 void EngineImpl::shutdown()
303 if (EngineImpl::instance_ == nullptr)
305 XBT_DEBUG("EngineImpl::shutdown() called. Simulation's over.");
307 if (not instance_->actor_list_.empty()) {
308 if (smpi_process()->initialized()) {
309 xbt_die("Process exited without calling MPI_Finalize - Killing simulation");
311 XBT_WARN("Process called exit when leaving - Skipping cleanups");
317 if (instance_->has_actors_to_run() && simgrid_get_clock() <= 0.0) {
319 XBT_CRITICAL("The time is still 0, and you still have processes ready to run.");
320 XBT_CRITICAL("It seems that you forgot to run the simulation that you setup.");
321 xbt_die("Bailing out to avoid that stop-before-start madness. Please fix your code.");
324 /* Kill all actors (but maestro) */
325 instance_->maestro_->kill_all();
326 instance_->run_all_actors();
327 instance_->empty_trash();
329 /* Let's free maestro now */
330 instance_->destroy_maestro();
332 /* Finish context module and SURF */
333 instance_->destroy_context_factory();
335 while (not timer::kernel_timers().empty()) {
336 delete timer::kernel_timers().top().second;
337 timer::kernel_timers().pop();
347 void EngineImpl::load_platform(const std::string& platf)
349 double start = xbt_os_time();
350 if (boost::algorithm::ends_with(platf, ".so") or boost::algorithm::ends_with(platf, ".dylib")) {
352 xbt_die("loading platform through shared library isn't supported on windows");
354 void* handle = dlopen(platf.c_str(), RTLD_LAZY);
355 xbt_assert(handle, "Impossible to open platform file: %s", platf.c_str());
356 platf_handle_ = std::unique_ptr<void, std::function<int(void*)>>(handle, dlclose);
357 using load_fct_t = void (*)(const simgrid::s4u::Engine&);
358 auto callable = (load_fct_t)dlsym(platf_handle_.get(), "load_platform");
359 const char* dlsym_error = dlerror();
360 xbt_assert(not dlsym_error, "Error: %s", dlsym_error);
361 callable(*simgrid::s4u::Engine::get_instance());
364 parse_platform_file(platf);
367 double end = xbt_os_time();
368 XBT_DEBUG("PARSE TIME: %g", (end - start));
371 void EngineImpl::load_deployment(const std::string& file) const
376 surf_parse_open(file);
381 void EngineImpl::register_function(const std::string& name, const actor::ActorCodeFactory& code)
383 registered_functions[name] = code;
385 void EngineImpl::register_default(const actor::ActorCodeFactory& code)
387 default_function = code;
390 void EngineImpl::add_model(std::shared_ptr<resource::Model> model, const std::vector<resource::Model*>& dependencies)
392 auto model_name = model->get_name();
393 xbt_assert(models_prio_.find(model_name) == models_prio_.end(),
394 "Model %s already exists, use model.set_name() to change its name", model_name.c_str());
396 for (const auto dep : dependencies) {
397 xbt_assert(models_prio_.find(dep->get_name()) != models_prio_.end(),
398 "Model %s doesn't exists. Impossible to use it as dependency.", dep->get_name().c_str());
400 models_.push_back(model.get());
401 models_prio_[model_name] = std::move(model);
404 void EngineImpl::add_split_duplex_link(const std::string& name, std::unique_ptr<resource::SplitDuplexLinkImpl> link)
406 split_duplex_links_[name] = std::move(link);
409 /** Wake up all actors waiting for a Surf action to finish */
410 void EngineImpl::wake_all_waiting_actors() const
412 for (auto const& model : models_) {
413 XBT_DEBUG("Handling the failed actions (if any)");
414 while (auto* action = model->extract_failed_action()) {
415 XBT_DEBUG(" Handling Action %p", action);
416 if (action->get_activity() != nullptr)
417 activity::ActivityImplPtr(action->get_activity())->post();
419 XBT_DEBUG("Handling the terminated actions (if any)");
420 while (auto* action = model->extract_done_action()) {
421 XBT_DEBUG(" Handling Action %p", action);
422 if (action->get_activity() == nullptr)
423 XBT_DEBUG("probably vcpu's action %p, skip", action);
425 activity::ActivityImplPtr(action->get_activity())->post();
430 * @brief Executes the actors in actors_to_run.
432 * The actors in actors_to_run are run (in parallel if possible). On exit, actors_to_run is empty, and actors_that_ran
433 * contains the list of actors that just ran. The two lists are swapped so, be careful when using them before and after
434 * a call to this function.
436 void EngineImpl::run_all_actors()
438 instance_->get_context_factory()->run_all();
440 actors_to_run_.swap(actors_that_ran_);
441 actors_to_run_.clear();
444 actor::ActorImpl* EngineImpl::get_actor_by_pid(aid_t pid)
446 auto item = actor_list_.find(pid);
447 if (item != actor_list_.end())
451 for (auto& a : actors_to_destroy_)
452 if (a.get_pid() == pid)
454 return nullptr; // Not found, even in the trash
457 /** Execute all the tasks that are queued, e.g. `.then()` callbacks of futures. */
458 bool EngineImpl::execute_tasks()
463 std::vector<xbt::Task<void()>> tasksTemp;
465 // We don't want the callbacks to modify the vector we are iterating over:
466 tasks.swap(tasksTemp);
468 // Execute all the queued tasks:
469 for (auto& task : tasksTemp)
473 } while (not tasks.empty());
478 void EngineImpl::remove_daemon(actor::ActorImpl* actor)
480 auto it = daemons_.find(actor);
481 xbt_assert(it != daemons_.end(), "The dying daemon is not a daemon after all. Please report that bug.");
485 void EngineImpl::add_actor_to_run_list_no_check(actor::ActorImpl* actor)
487 XBT_DEBUG("Inserting [%p] %s(%s) in the to_run list", actor, actor->get_cname(), actor->get_host()->get_cname());
488 actors_to_run_.push_back(actor);
491 void EngineImpl::add_actor_to_run_list(actor::ActorImpl* actor)
493 if (std::find(begin(actors_to_run_), end(actors_to_run_), actor) != end(actors_to_run_)) {
494 XBT_DEBUG("Actor %s is already in the to_run list", actor->get_cname());
496 XBT_DEBUG("Inserting [%p] %s(%s) in the to_run list", actor, actor->get_cname(), actor->get_host()->get_cname());
497 actors_to_run_.push_back(actor);
500 void EngineImpl::empty_trash()
502 while (not actors_to_destroy_.empty()) {
503 actor::ActorImpl* actor = &actors_to_destroy_.front();
504 actors_to_destroy_.pop_front();
505 XBT_DEBUG("Getting rid of %s (refcount: %d)", actor->get_cname(), actor->get_refcount());
506 intrusive_ptr_release(actor);
509 xbt_dynar_reset(dead_actors_vector_);
513 void EngineImpl::display_all_actor_status() const
515 XBT_INFO("%zu actors are still running, waiting for something.", actor_list_.size());
516 /* List the actors and their state */
517 XBT_INFO("Legend of the following listing: \"Actor <pid> (<name>@<host>): <status>\"");
518 for (auto const& kv : actor_list_) {
519 actor::ActorImpl* actor = kv.second;
521 if (actor->waiting_synchro_) {
522 const char* synchro_description = "unknown";
524 if (boost::dynamic_pointer_cast<kernel::activity::ExecImpl>(actor->waiting_synchro_) != nullptr)
525 synchro_description = "execution";
527 if (boost::dynamic_pointer_cast<kernel::activity::CommImpl>(actor->waiting_synchro_) != nullptr)
528 synchro_description = "communication";
530 if (boost::dynamic_pointer_cast<kernel::activity::SleepImpl>(actor->waiting_synchro_) != nullptr)
531 synchro_description = "sleeping";
533 if (boost::dynamic_pointer_cast<kernel::activity::RawImpl>(actor->waiting_synchro_) != nullptr)
534 synchro_description = "synchronization";
536 if (boost::dynamic_pointer_cast<kernel::activity::IoImpl>(actor->waiting_synchro_) != nullptr)
537 synchro_description = "I/O";
539 XBT_INFO("Actor %ld (%s@%s): waiting for %s activity %#zx (%s) in state %d to finish", actor->get_pid(),
540 actor->get_cname(), actor->get_host()->get_cname(), synchro_description,
541 (xbt_log_no_loc ? (size_t)0xDEADBEEF : (size_t)actor->waiting_synchro_.get()),
542 actor->waiting_synchro_->get_cname(), (int)actor->waiting_synchro_->state_);
544 XBT_INFO("Actor %ld (%s@%s) simcall %s", actor->get_pid(), actor->get_cname(), actor->get_host()->get_cname(),
545 SIMIX_simcall_name(actor->simcall_));
550 void EngineImpl::run()
552 if (MC_record_replay_is_active()) {
553 mc::replay(MC_record_path());
561 XBT_DEBUG("New Schedule Round; size(queue)=%zu", actors_to_run_.size());
563 if (cfg_breakpoint >= 0.0 && simgrid_get_clock() >= cfg_breakpoint) {
564 XBT_DEBUG("Breakpoint reached (%g)", cfg_breakpoint.get());
565 cfg_breakpoint = -1.0;
575 while (not actors_to_run_.empty()) {
576 XBT_DEBUG("New Sub-Schedule Round; size(queue)=%zu", actors_to_run_.size());
578 /* Run all actors that are ready to run, possibly in parallel */
581 /* answer sequentially and in a fixed arbitrary order all the simcalls that were issued during that sub-round */
583 /* WARNING, the order *must* be fixed or you'll jeopardize the simulation reproducibility (see RR-7653) */
585 /* Here, the order is ok because:
587 * Short proof: only maestro adds stuff to the actors_to_run array, so the execution order of user contexts do
588 * not impact its order.
590 * Long proof: actors remain sorted through an arbitrary (implicit, complex but fixed) order in all cases.
592 * - if there is no kill during the simulation, actors remain sorted according by their PID.
593 * Rationale: This can be proved inductively.
594 * Assume that actors_to_run is sorted at a beginning of one round (it is at round 0: the deployment file
595 * is parsed linearly).
596 * Let's show that it is still so at the end of this round.
597 * - if an actor is added when being created, that's from maestro. It can be either at startup
598 * time (and then in PID order), or in response to a process_create simcall. Since simcalls are handled
599 * in arbitrary order (inductive hypothesis), we are fine.
600 * - If an actor is added because it's getting killed, its subsequent actions shouldn't matter
601 * - If an actor gets added to actors_to_run because one of their blocking action constituting the meat
602 * of a simcall terminates, we're still good. Proof:
603 * - You are added from ActorImpl::simcall_answer() only. When this function is called depends on the
604 * resource kind (network, cpu, disk, whatever), but the same arguments hold. Let's take communications
606 * - For communications, this function is called from CommImpl::finish().
607 * This function itself don't mess with the order since simcalls are handled in FIFO order.
608 * The function is called:
609 * - before the comm starts (invalid parameters, or resource already dead or whatever).
610 * The order then trivial holds since maestro didn't interrupt its handling of the simcall yet
611 * - because the communication failed or were canceled after startup. In this case, it's called from
612 * the function we are in, by the chunk:
613 * set = model->states.failed_action_set;
614 * while ((synchro = extract(set)))
615 * SIMIX_simcall_post((smx_synchro_t) synchro->data);
616 * This order is also fixed because it depends of the order in which the surf actions were
617 * added to the system, and only maestro can add stuff this way, through simcalls.
618 * We thus use the inductive hypothesis once again to conclude that the order in which synchros are
619 * popped out of the set does not depend on the user code's execution order.
620 * - because the communication terminated. In this case, synchros are served in the order given by
621 * set = model->states.done_action_set;
622 * while ((synchro = extract(set)))
623 * SIMIX_simcall_post((smx_synchro_t) synchro->data);
624 * and the argument is very similar to the previous one.
625 * So, in any case, the orders of calls to CommImpl::finish() do not depend on the order in which user
626 * actors are executed.
627 * So, in any cases, the orders of actors within actors_to_run do not depend on the order in which
628 * user actors were executed previously.
629 * So, if there is no killing in the simulation, the simulation reproducibility is not jeopardized.
630 * - If there is some actor killings, the order is changed by this decision that comes from user-land
631 * But this decision may not have been motivated by a situation that were different because the simulation is
633 * So, even the order change induced by the actor killing is perfectly reproducible.
635 * So science works, bitches [http://xkcd.com/54/].
637 * We could sort the actors_that_ran array completely so that we can describe the order in which simcalls are
638 * handled (like "according to the PID of issuer"), but it's not mandatory (order is fixed already even if
640 * That would thus be a pure waste of time.
643 for (auto const& actor : actors_that_ran_) {
644 if (actor->simcall_.call_ != simix::Simcall::NONE) {
645 actor->simcall_handle(0);
651 wake_all_waiting_actors();
652 } while (execute_tasks());
654 /* If only daemon actors remain, cancel their actions, mark them to die and reschedule them */
655 if (actor_list_.size() == daemons_.size())
656 for (auto const& dmon : daemons_) {
657 XBT_DEBUG("Kill %s", dmon->get_cname());
658 maestro_->kill(dmon);
662 time = timer::Timer::next();
663 if (time > -1.0 || not actor_list_.empty()) {
664 XBT_DEBUG("Calling surf_solve");
665 time = surf_solve(time);
666 XBT_DEBUG("Moving time ahead : %g", time);
669 /* Notify all the hosts that have failed */
670 /* FIXME: iterate through the list of failed host and mark each of them */
671 /* as failed. On each host, signal all the running actors with host_fail */
673 // Execute timers and tasks until there isn't anything to be done:
676 again = timer::Timer::execute_all();
679 wake_all_waiting_actors();
682 /* Clean actors to destroy */
685 XBT_DEBUG("### time %f, #actors %zu, #to_run %zu", time, actor_list_.size(), actors_to_run_.size());
687 if (time < 0. && actors_to_run_.empty() && not actor_list_.empty()) {
688 if (actor_list_.size() <= daemons_.size()) {
689 XBT_CRITICAL("Oops! Daemon actors cannot do any blocking activity (communications, synchronization, etc) "
690 "once the simulation is over. Please fix your on_exit() functions.");
692 XBT_CRITICAL("Oops! Deadlock or code not perfectly clean.");
694 display_all_actor_status();
695 simgrid::s4u::Engine::on_deadlock();
696 for (auto const& kv : actor_list_) {
697 XBT_DEBUG("Kill %s", kv.second->get_cname());
698 maestro_->kill(kv.second);
701 } while (time > -1.0 || has_actors_to_run());
703 if (not actor_list_.empty())
706 simgrid::s4u::Engine::on_simulation_end();
708 } // namespace kernel
709 } // namespace simgrid
711 void SIMIX_run() // XBT_ATTRIB_DEPRECATED_v332
713 simgrid::kernel::EngineImpl::get_instance()->run();