XBT_PUBLIC void SIMIX_set_maestro(void (*code)(void*), void* data);
/* Simulation execution */
-XBT_PUBLIC void SIMIX_run();
+XBT_ATTRIB_DEPRECATED_v332("Please use EngineImpl:run()") XBT_PUBLIC void SIMIX_run();
XBT_PUBLIC double SIMIX_get_clock();
XBT_ATTRIB_DEPRECATED_v329("Please use simgrid::kernel::timer::Timer::set()") XBT_PUBLIC smx_timer_t
* under the terms of the license (GNU LGPL) which comes with this package. */
#include "src/kernel/EngineImpl.hpp"
+#include "mc/mc.h"
#include "simgrid/Exception.hpp"
#include "simgrid/kernel/routing/NetPoint.hpp"
#include "simgrid/kernel/routing/NetZoneImpl.hpp"
#include "simgrid/s4u/Host.hpp"
+#include "simgrid/sg_config.hpp"
+#include "src/include/surf/surf.hpp" //get_clock() and surf_solve()
#include "src/kernel/resource/DiskImpl.hpp"
+#include "src/mc/mc_record.hpp"
+#include "src/mc/mc_replay.hpp"
#include "src/simix/smx_private.hpp"
#include "src/surf/network_interface.hpp"
#include "src/surf/xml/platf.hpp" // FIXME: KILLME. There must be a better way than mimicking XML here
+XBT_LOG_NEW_DEFAULT_CATEGORY(ker_engine, "Logging specific to Engine (kernel)");
+
namespace simgrid {
namespace kernel {
+config::Flag<double> cfg_breakpoint{"debug/breakpoint",
+ "When non-negative, raise a SIGTRAP after given (simulated) time", -1.0};
EngineImpl::~EngineImpl()
{
/* Since hosts_ is a std::map, the hosts are destroyed in the lexicographic order, which ensures that the output is
models_prio_[model_name] = std::move(model);
}
+void EngineImpl::run()
+{
+ if (MC_record_replay_is_active()) {
+ mc::replay(MC_record_path());
+ return;
+ }
+
+ double time = 0;
+
+ do {
+ XBT_DEBUG("New Schedule Round; size(queue)=%zu", simix_global->actors_to_run.size());
+
+ if (cfg_breakpoint >= 0.0 && surf_get_clock() >= cfg_breakpoint) {
+ XBT_DEBUG("Breakpoint reached (%g)", cfg_breakpoint.get());
+ cfg_breakpoint = -1.0;
+#ifdef SIGTRAP
+ std::raise(SIGTRAP);
+#else
+ std::raise(SIGABRT);
+#endif
+ }
+
+ simix_global->execute_tasks();
+
+ while (not simix_global->actors_to_run.empty()) {
+ XBT_DEBUG("New Sub-Schedule Round; size(queue)=%zu", simix_global->actors_to_run.size());
+
+ /* Run all processes that are ready to run, possibly in parallel */
+ simix_global->run_all_actors();
+
+ /* answer sequentially and in a fixed arbitrary order all the simcalls that were issued during that sub-round */
+
+ /* WARNING, the order *must* be fixed or you'll jeopardize the simulation reproducibility (see RR-7653) */
+
+ /* Here, the order is ok because:
+ *
+ * Short proof: only maestro adds stuff to the actors_to_run array, so the execution order of user contexts do
+ * not impact its order.
+ *
+ * Long proof: actors remain sorted through an arbitrary (implicit, complex but fixed) order in all cases.
+ *
+ * - if there is no kill during the simulation, actors remain sorted according by their PID.
+ * Rationale: This can be proved inductively.
+ * Assume that actors_to_run is sorted at a beginning of one round (it is at round 0: the deployment file
+ * is parsed linearly).
+ * Let's show that it is still so at the end of this round.
+ * - if an actor is added when being created, that's from maestro. It can be either at startup
+ * time (and then in PID order), or in response to a process_create simcall. Since simcalls are handled
+ * in arbitrary order (inductive hypothesis), we are fine.
+ * - If an actor is added because it's getting killed, its subsequent actions shouldn't matter
+ * - If an actor gets added to actors_to_run because one of their blocking action constituting the meat
+ * of a simcall terminates, we're still good. Proof:
+ * - You are added from ActorImpl::simcall_answer() only. When this function is called depends on the
+ * resource kind (network, cpu, disk, whatever), but the same arguments hold. Let's take communications
+ * as an example.
+ * - For communications, this function is called from SIMIX_comm_finish().
+ * This function itself don't mess with the order since simcalls are handled in FIFO order.
+ * The function is called:
+ * - before the comm starts (invalid parameters, or resource already dead or whatever).
+ * The order then trivial holds since maestro didn't interrupt its handling of the simcall yet
+ * - because the communication failed or were canceled after startup. In this case, it's called from
+ * the function we are in, by the chunk:
+ * set = model->states.failed_action_set;
+ * while ((synchro = extract(set)))
+ * SIMIX_simcall_post((smx_synchro_t) synchro->data);
+ * This order is also fixed because it depends of the order in which the surf actions were
+ * added to the system, and only maestro can add stuff this way, through simcalls.
+ * We thus use the inductive hypothesis once again to conclude that the order in which synchros are
+ * popped out of the set does not depend on the user code's execution order.
+ * - because the communication terminated. In this case, synchros are served in the order given by
+ * set = model->states.done_action_set;
+ * while ((synchro = extract(set)))
+ * SIMIX_simcall_post((smx_synchro_t) synchro->data);
+ * and the argument is very similar to the previous one.
+ * So, in any case, the orders of calls to CommImpl::finish() do not depend on the order in which user
+ * actors are executed.
+ * So, in any cases, the orders of actors within actors_to_run do not depend on the order in which
+ * user actors were executed previously.
+ * So, if there is no killing in the simulation, the simulation reproducibility is not jeopardized.
+ * - If there is some actor killings, the order is changed by this decision that comes from user-land
+ * But this decision may not have been motivated by a situation that were different because the simulation is
+ * not reproducible.
+ * So, even the order change induced by the actor killing is perfectly reproducible.
+ *
+ * So science works, bitches [http://xkcd.com/54/].
+ *
+ * We could sort the actors_that_ran array completely so that we can describe the order in which simcalls are
+ * handled (like "according to the PID of issuer"), but it's not mandatory (order is fixed already even if
+ * unfriendly).
+ * That would thus be a pure waste of time.
+ */
+
+ for (auto const& actor : simix_global->actors_that_ran) {
+ if (actor->simcall_.call_ != simix::Simcall::NONE) {
+ actor->simcall_handle(0);
+ }
+ }
+
+ simix_global->execute_tasks();
+ do {
+ simix_global->wake_all_waiting_actors();
+ } while (simix_global->execute_tasks());
+
+ /* If only daemon processes remain, cancel their actions, mark them to die and reschedule them */
+ if (simix_global->process_list.size() == simix_global->daemons.size())
+ for (auto const& dmon : simix_global->daemons) {
+ XBT_DEBUG("Kill %s", dmon->get_cname());
+ simix_global->maestro_->kill(dmon);
+ }
+ }
+
+ time = timer::Timer::next();
+ if (time > -1.0 || not simix_global->process_list.empty()) {
+ XBT_DEBUG("Calling surf_solve");
+ time = surf_solve(time);
+ XBT_DEBUG("Moving time ahead : %g", time);
+ }
+
+ /* Notify all the hosts that have failed */
+ /* FIXME: iterate through the list of failed host and mark each of them */
+ /* as failed. On each host, signal all the running processes with host_fail */
+
+ // Execute timers and tasks until there isn't anything to be done:
+ bool again = false;
+ do {
+ again = timer::Timer::execute_all();
+ if (simix_global->execute_tasks())
+ again = true;
+ simix_global->wake_all_waiting_actors();
+ } while (again);
+
+ /* Clean actors to destroy */
+ simix_global->empty_trash();
+
+ XBT_DEBUG("### time %f, #processes %zu, #to_run %zu", time, simix_global->process_list.size(),
+ simix_global->actors_to_run.size());
+
+ if (time < 0. && simix_global->actors_to_run.empty() && not simix_global->process_list.empty()) {
+ if (simix_global->process_list.size() <= simix_global->daemons.size()) {
+ XBT_CRITICAL("Oops! Daemon actors cannot do any blocking activity (communications, synchronization, etc) "
+ "once the simulation is over. Please fix your on_exit() functions.");
+ } else {
+ XBT_CRITICAL("Oops! Deadlock or code not perfectly clean.");
+ }
+ simix_global->display_all_actor_status();
+ simgrid::s4u::Engine::on_deadlock();
+ for (auto const& kv : simix_global->process_list) {
+ XBT_DEBUG("Kill %s", kv.second->get_cname());
+ simix_global->maestro_->kill(kv.second);
+ }
+ }
+ } while (time > -1.0 || not simix_global->actors_to_run.empty());
+
+ if (not simix_global->process_list.empty())
+ THROW_IMPOSSIBLE;
+
+ simgrid::s4u::Engine::on_simulation_end();
+}
} // namespace kernel
} // namespace simgrid
else
return res->second;
}
+
+ /** @brief Run the main simulation loop. */
+ void run();
};
} // namespace kernel
if (MC_is_active()) {
MC_run();
} else {
- SIMIX_run();
+ pimpl->run();
}
}
}
}
-config::Flag<double> cfg_breakpoint{"debug/breakpoint",
- "When non-negative, raise a SIGTRAP after given (simulated) time", -1.0};
} // namespace simix
} // namespace simgrid
}
}
-/**
- * @ingroup SIMIX_API
- * @brief Run the main simulation loop.
- */
-void SIMIX_run()
+void SIMIX_run() // XBT_ATTRIB_DEPRECATED_v332
{
- if (MC_record_replay_is_active()) {
- simgrid::mc::replay(MC_record_path());
- return;
- }
-
- double time = 0;
-
- do {
- XBT_DEBUG("New Schedule Round; size(queue)=%zu", simix_global->actors_to_run.size());
-
- if (simgrid::simix::cfg_breakpoint >= 0.0 && surf_get_clock() >= simgrid::simix::cfg_breakpoint) {
- XBT_DEBUG("Breakpoint reached (%g)", simgrid::simix::cfg_breakpoint.get());
- simgrid::simix::cfg_breakpoint = -1.0;
-#ifdef SIGTRAP
- std::raise(SIGTRAP);
-#else
- std::raise(SIGABRT);
-#endif
- }
-
- simix_global->execute_tasks();
-
- while (not simix_global->actors_to_run.empty()) {
- XBT_DEBUG("New Sub-Schedule Round; size(queue)=%zu", simix_global->actors_to_run.size());
-
- /* Run all processes that are ready to run, possibly in parallel */
- simix_global->run_all_actors();
-
- /* answer sequentially and in a fixed arbitrary order all the simcalls that were issued during that sub-round */
-
- /* WARNING, the order *must* be fixed or you'll jeopardize the simulation reproducibility (see RR-7653) */
-
- /* Here, the order is ok because:
- *
- * Short proof: only maestro adds stuff to the actors_to_run array, so the execution order of user contexts do
- * not impact its order.
- *
- * Long proof: actors remain sorted through an arbitrary (implicit, complex but fixed) order in all cases.
- *
- * - if there is no kill during the simulation, actors remain sorted according by their PID.
- * Rationale: This can be proved inductively.
- * Assume that actors_to_run is sorted at a beginning of one round (it is at round 0: the deployment file
- * is parsed linearly).
- * Let's show that it is still so at the end of this round.
- * - if an actor is added when being created, that's from maestro. It can be either at startup
- * time (and then in PID order), or in response to a process_create simcall. Since simcalls are handled
- * in arbitrary order (inductive hypothesis), we are fine.
- * - If an actor is added because it's getting killed, its subsequent actions shouldn't matter
- * - If an actor gets added to actors_to_run because one of their blocking action constituting the meat
- * of a simcall terminates, we're still good. Proof:
- * - You are added from ActorImpl::simcall_answer() only. When this function is called depends on the
- * resource kind (network, cpu, disk, whatever), but the same arguments hold. Let's take communications
- * as an example.
- * - For communications, this function is called from SIMIX_comm_finish().
- * This function itself don't mess with the order since simcalls are handled in FIFO order.
- * The function is called:
- * - before the comm starts (invalid parameters, or resource already dead or whatever).
- * The order then trivial holds since maestro didn't interrupt its handling of the simcall yet
- * - because the communication failed or were canceled after startup. In this case, it's called from
- * the function we are in, by the chunk:
- * set = model->states.failed_action_set;
- * while ((synchro = extract(set)))
- * SIMIX_simcall_post((smx_synchro_t) synchro->data);
- * This order is also fixed because it depends of the order in which the surf actions were
- * added to the system, and only maestro can add stuff this way, through simcalls.
- * We thus use the inductive hypothesis once again to conclude that the order in which synchros are
- * popped out of the set does not depend on the user code's execution order.
- * - because the communication terminated. In this case, synchros are served in the order given by
- * set = model->states.done_action_set;
- * while ((synchro = extract(set)))
- * SIMIX_simcall_post((smx_synchro_t) synchro->data);
- * and the argument is very similar to the previous one.
- * So, in any case, the orders of calls to CommImpl::finish() do not depend on the order in which user
- * actors are executed.
- * So, in any cases, the orders of actors within actors_to_run do not depend on the order in which
- * user actors were executed previously.
- * So, if there is no killing in the simulation, the simulation reproducibility is not jeopardized.
- * - If there is some actor killings, the order is changed by this decision that comes from user-land
- * But this decision may not have been motivated by a situation that were different because the simulation is
- * not reproducible.
- * So, even the order change induced by the actor killing is perfectly reproducible.
- *
- * So science works, bitches [http://xkcd.com/54/].
- *
- * We could sort the actors_that_ran array completely so that we can describe the order in which simcalls are
- * handled (like "according to the PID of issuer"), but it's not mandatory (order is fixed already even if
- * unfriendly).
- * That would thus be a pure waste of time.
- */
-
- for (auto const& actor : simix_global->actors_that_ran) {
- if (actor->simcall_.call_ != simgrid::simix::Simcall::NONE) {
- actor->simcall_handle(0);
- }
- }
-
- simix_global->execute_tasks();
- do {
- simix_global->wake_all_waiting_actors();
- } while (simix_global->execute_tasks());
-
- /* If only daemon processes remain, cancel their actions, mark them to die and reschedule them */
- if (simix_global->process_list.size() == simix_global->daemons.size())
- for (auto const& dmon : simix_global->daemons) {
- XBT_DEBUG("Kill %s", dmon->get_cname());
- simix_global->maestro_->kill(dmon);
- }
- }
-
- time = simgrid::kernel::timer::Timer::next();
- if (time > -1.0 || not simix_global->process_list.empty()) {
- XBT_DEBUG("Calling surf_solve");
- time = surf_solve(time);
- XBT_DEBUG("Moving time ahead : %g", time);
- }
-
- /* Notify all the hosts that have failed */
- /* FIXME: iterate through the list of failed host and mark each of them */
- /* as failed. On each host, signal all the running processes with host_fail */
-
- // Execute timers and tasks until there isn't anything to be done:
- bool again = false;
- do {
- again = simgrid::kernel::timer::Timer::execute_all();
- if (simix_global->execute_tasks())
- again = true;
- simix_global->wake_all_waiting_actors();
- } while (again);
-
- /* Clean actors to destroy */
- simix_global->empty_trash();
-
- XBT_DEBUG("### time %f, #processes %zu, #to_run %zu", time, simix_global->process_list.size(),
- simix_global->actors_to_run.size());
-
- if (time < 0. && simix_global->actors_to_run.empty() && not simix_global->process_list.empty()) {
- if (simix_global->process_list.size() <= simix_global->daemons.size()) {
- XBT_CRITICAL("Oops! Daemon actors cannot do any blocking activity (communications, synchronization, etc) "
- "once the simulation is over. Please fix your on_exit() functions.");
- } else {
- XBT_CRITICAL("Oops! Deadlock or code not perfectly clean.");
- }
- simix_global->display_all_actor_status();
- simgrid::s4u::Engine::on_deadlock();
- for (auto const& kv : simix_global->process_list) {
- XBT_DEBUG("Kill %s", kv.second->get_cname());
- simix_global->maestro_->kill(kv.second);
- }
- }
- } while (time > -1.0 || not simix_global->actors_to_run.empty());
-
- if (not simix_global->process_list.empty())
- THROW_IMPOSSIBLE;
-
- simgrid::s4u::Engine::on_simulation_end();
+ simgrid::kernel::EngineImpl::get_instance()->run();
}
double SIMIX_timer_next() // XBT_ATTRIB_DEPRECATED_v329
* under the terms of the license (GNU LGPL) which comes with this package. */
#include "mc/mc.h"
-#include "simgrid/s4u/Engine.hpp"
#include "simgrid/plugins/file_system.h"
+#include "simgrid/s4u/Engine.hpp"
#include "smpi_coll.hpp"
+#include "smpi_config.hpp"
#include "smpi_f2c.hpp"
#include "smpi_host.hpp"
-#include "smpi_config.hpp"
+#include "src/kernel/EngineImpl.hpp"
#include "src/kernel/activity/CommImpl.hpp"
#include "src/simix/smx_private.hpp"
#include "src/smpi/include/smpi_actor.hpp"
if (MC_is_active()) {
MC_run();
} else {
- SIMIX_run();
+ simgrid::kernel::EngineImpl::get_instance()->run();
xbt_os_walltimer_stop(global_timer);
simgrid::smpi::utils::print_time_analysis(xbt_os_timer_elapsed(global_timer));
