-/* Copyright (c) 2007-2018. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2007-2019. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#include "mc/mc.h"
#include "simgrid/s4u/Engine.hpp"
#include "simgrid/s4u/Host.hpp"
+#include "src/smpi/include/smpi_actor.hpp"
-#include "../kernel/activity/IoImpl.hpp"
#include "simgrid/sg_config.hpp"
-#include "smx_private.hpp"
+#include "src/kernel/activity/ExecImpl.hpp"
+#include "src/kernel/activity/IoImpl.hpp"
+#include "src/kernel/activity/MailboxImpl.hpp"
#include "src/kernel/activity/SleepImpl.hpp"
#include "src/kernel/activity/SynchroRaw.hpp"
#include "src/mc/mc_record.hpp"
#include "src/mc/mc_replay.hpp"
-#include "src/simix/smx_host_private.hpp"
-#include "src/smpi/include/smpi_process.hpp"
+#include "src/simix/smx_private.hpp"
#include "src/surf/StorageImpl.hpp"
#include "src/surf/xml/platf.hpp"
#if SIMGRID_HAVE_MC
-#include "src/mc/mc_private.hpp"
#include "src/mc/remote/Client.hpp"
-#include "src/mc/remote/mc_protocol.h"
#endif
-#if HAVE_SMPI
-#include "src/smpi/include/private.hpp"
-#endif
-
-#include <boost/heap/fibonacci_heap.hpp>
-#include <csignal>
XBT_LOG_NEW_CATEGORY(simix, "All SIMIX categories");
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_kernel, simix, "Logging specific to SIMIX (kernel)");
std::unique_ptr<simgrid::simix::Global> simix_global;
-namespace {
-typedef std::pair<double, smx_timer_t> TimerQelt;
-boost::heap::fibonacci_heap<TimerQelt, boost::heap::compare<simgrid::xbt::HeapComparator<TimerQelt>>> simix_timers;
-}
-
-/** @brief Timer datatype */
-class s_smx_timer_t {
- double date = 0.0;
-
-public:
- decltype(simix_timers)::handle_type handle_;
- simgrid::xbt::Task<void()> callback;
- double getDate() { return date; }
- s_smx_timer_t(double date, simgrid::xbt::Task<void()> callback) : date(date), callback(std::move(callback)) {}
-};
-
void (*SMPI_switch_data_segment)(simgrid::s4u::ActorPtr) = nullptr;
-bool _sg_do_verbose_exit = true;
-static void inthandler(int)
+namespace simgrid {
+namespace simix {
+simgrid::config::Flag<double> cfg_verbose_exit{
+ "debug/verbose-exit", {"verbose-exit"}, "Display the actor status at exit", true};
+}
+} // namespace simgrid
+XBT_ATTRIB_NORETURN static void inthandler(int)
{
- if ( _sg_do_verbose_exit ) {
- XBT_INFO("CTRL-C pressed. The current status will be displayed before exit (disable that behavior with option 'verbose-exit').");
- SIMIX_display_process_status();
+ if (simgrid::simix::cfg_verbose_exit) {
+ XBT_INFO("CTRL-C pressed. The current status will be displayed before exit (disable that behavior with option "
+ "'debug/verbose-exit').");
+ SIMIX_display_process_status();
}
else {
- XBT_INFO("CTRL-C pressed, exiting. Hiding the current process status since 'verbose-exit' is set to false.");
+ XBT_INFO("CTRL-C pressed, exiting. Hiding the current process status since 'debug/verbose-exit' is set to false.");
}
exit(1);
}
std::raise(signum);
}
-char sigsegv_stack[SIGSTKSZ]; /* alternate stack for SIGSEGV handler */
+unsigned char sigsegv_stack[SIGSTKSZ]; /* alternate stack for SIGSEGV handler */
/**
* Install signal handler for SIGSEGV. Check that nobody has already installed
#endif /* _WIN32 */
/********************************* SIMIX **************************************/
-double SIMIX_timer_next()
+namespace simgrid {
+namespace simix {
+
+Timer* Timer::set(double date, simgrid::xbt::Task<void()>&& callback)
{
- return simix_timers.empty() ? -1.0 : simix_timers.top().first;
+ Timer* timer = new Timer(date, std::move(callback));
+ timer->handle_ = simix_timers.emplace(std::make_pair(date, timer));
+ return timer;
}
-static void kill_process(smx_actor_t process)
+/** @brief cancels a timer that was added earlier */
+void Timer::remove()
{
- SIMIX_process_kill(process, nullptr);
+ simgrid::simix::simix_timers.erase(handle_);
+ delete this;
}
+/** Execute all the tasks that are queued, e.g. `.then()` callbacks of futures. */
+bool Global::execute_tasks()
+{
+ xbt_assert(tasksTemp.empty());
-namespace simgrid {
-namespace simix {
+ if (tasks.empty())
+ return false;
+
+ do {
+ // We don't want the callbacks to modify the vector we are iterating over:
+ tasks.swap(tasksTemp);
-simgrid::config::Flag<double> breakpoint{"simix/breakpoint",
- "When non-negative, raise a SIGTRAP after given (simulated) time", -1.0};
+ // Execute all the queued tasks:
+ for (auto& task : tasksTemp)
+ task();
+
+ tasksTemp.clear();
+ } while (not tasks.empty());
+
+ return true;
+}
+
+void Global::empty_trash()
+{
+ while (not actors_to_destroy.empty()) {
+ smx_actor_t actor = &actors_to_destroy.front();
+ actors_to_destroy.pop_front();
+ XBT_DEBUG("Getting rid of %p", actor);
+ intrusive_ptr_release(actor);
+ }
+#if SIMGRID_HAVE_MC
+ xbt_dynar_reset(dead_actors_vector);
+#endif
+}
+/**
+ * @brief Executes the actors in actors_to_run.
+ *
+ * The actors in actors_to_run are run (in parallel if possible). On exit, actors_to_run is empty, and actors_that_ran
+ * contains the list of actors that just ran. The two lists are swapped so, be careful when using them before and after
+ * a call to this function.
+ */
+void Global::run_all_actors()
+{
+ SIMIX_context_runall();
+
+ actors_to_run.swap(actors_that_ran);
+ actors_to_run.clear();
+}
+
+simgrid::config::Flag<double> cfg_breakpoint{
+ "debug/breakpoint", {"simix/breakpoint"}, "When non-negative, raise a SIGTRAP after given (simulated) time", -1.0};
}
}
-static std::function<void()> maestro_code;
+static simgrid::simix::ActorCode maestro_code;
void SIMIX_set_maestro(void (*code)(void*), void* data)
{
#ifdef _WIN32
}
/**
- * \ingroup SIMIX_API
- * \brief Initialize SIMIX internal data.
+ * @ingroup SIMIX_API
+ * @brief Initialize SIMIX internal data.
*/
void SIMIX_global_init(int *argc, char **argv)
{
simgrid::mc::Client::initialize();
#endif
- if (not simix_global) {
- simix_global = std::unique_ptr<simgrid::simix::Global>(new simgrid::simix::Global());
- simix_global->maestro_process = nullptr;
- simix_global->create_process_function = &SIMIX_process_create;
- simix_global->kill_process_function = &kill_process;
- simix_global->cleanup_process_function = &SIMIX_process_cleanup;
- simix_global->mutex = xbt_os_mutex_init();
+ if (simix_global == nullptr) {
+ surf_init(argc, argv); /* Initialize SURF structures */
- surf_init(argc, argv); /* Initialize SURF structures */
+ simix_global.reset(new simgrid::simix::Global());
+ simix_global->maestro_process = nullptr;
SIMIX_context_mod_init();
// Either create a new context with maestro or create
#endif
/* register a function to be called by SURF after the environment creation */
sg_platf_init();
- simgrid::s4u::on_platform_created.connect(SIMIX_post_create_environment);
- simgrid::s4u::Host::on_creation.connect([](simgrid::s4u::Host& host) {
- if (host.extension<simgrid::simix::Host>() == nullptr) // another callback to the same signal may have created it
- host.extension_set<simgrid::simix::Host>(new simgrid::simix::Host());
- });
+ simgrid::s4u::on_platform_created.connect(surf_presolve);
- simgrid::s4u::Storage::on_creation.connect([](simgrid::s4u::Storage& storage) {
- sg_storage_t s = simgrid::s4u::Storage::by_name(storage.get_cname());
+ simgrid::s4u::Storage::on_creation.connect([](simgrid::s4u::Storage const& storage) {
+ sg_storage_t s = simgrid::s4u::Storage::by_name(storage.get_name());
xbt_assert(s != nullptr, "Storage not found for name %s", storage.get_cname());
});
}
- if (simgrid::config::get_value<bool>("clean-atexit"))
+ if (simgrid::config::get_value<bool>("debug/clean-atexit"))
atexit(SIMIX_clean);
-
- if (_sg_cfg_exit_asap)
- exit(0);
}
int smx_cleaned = 0;
/**
- * \ingroup SIMIX_API
- * \brief Clean the SIMIX simulation
+ * @ingroup SIMIX_API
+ * @brief Clean the SIMIX simulation
*
* This functions remove the memory used by SIMIX
*/
smx_cleaned = 1;
XBT_DEBUG("SIMIX_clean called. Simulation's over.");
- if (not simix_global->process_to_run.empty() && SIMIX_get_clock() <= 0.0) {
+ if (not simix_global->actors_to_run.empty() && SIMIX_get_clock() <= 0.0) {
XBT_CRITICAL(" ");
XBT_CRITICAL("The time is still 0, and you still have processes ready to run.");
XBT_CRITICAL("It seems that you forgot to run the simulation that you setup.");
#endif
/* Kill all processes (but maestro) */
- SIMIX_process_killall(simix_global->maestro_process);
+ simix_global->maestro_process->kill_all();
SIMIX_context_runall();
- SIMIX_process_empty_trash();
+ simix_global->empty_trash();
/* Exit the SIMIX network module */
SIMIX_mailbox_exit();
- while (not simix_timers.empty()) {
- delete simix_timers.top().second;
- simix_timers.pop();
+ while (not simgrid::simix::simix_timers.empty()) {
+ delete simgrid::simix::simix_timers.top().second;
+ simgrid::simix::simix_timers.pop();
}
/* Free the remaining data structures */
- simix_global->process_to_run.clear();
- simix_global->process_that_ran.clear();
- simix_global->process_to_destroy.clear();
+ simix_global->actors_to_run.clear();
+ simix_global->actors_that_ran.clear();
+ simix_global->actors_to_destroy.clear();
simix_global->process_list.clear();
- xbt_os_mutex_destroy(simix_global->mutex);
- simix_global->mutex = nullptr;
#if SIMGRID_HAVE_MC
xbt_dynar_free(&simix_global->actors_vector);
xbt_dynar_free(&simix_global->dead_actors_vector);
#endif
/* Let's free maestro now */
- delete simix_global->maestro_process->context;
- simix_global->maestro_process->context = nullptr;
delete simix_global->maestro_process;
simix_global->maestro_process = nullptr;
simix_global = nullptr;
}
-
/**
- * \ingroup SIMIX_API
- * \brief A clock (in second).
+ * @ingroup SIMIX_API
+ * @brief A clock (in second).
*
- * \return Return the clock.
+ * @return Return the clock.
*/
double SIMIX_get_clock()
{
/** Wake up all processes waiting for a Surf action to finish */
static void SIMIX_wake_processes()
{
- for (auto const& model : *all_existing_models) {
+ for (auto const& model : all_existing_models) {
simgrid::kernel::resource::Action* action;
XBT_DEBUG("Handling the processes whose action failed (if any)");
- while ((action = surf_model_extract_failed_action_set(model))) {
+ while ((action = model->extract_failed_action())) {
XBT_DEBUG(" Handling Action %p",action);
- SIMIX_simcall_exit(static_cast<simgrid::kernel::activity::ActivityImpl*>(action->get_data()));
+ if (action->get_activity() != nullptr)
+ simgrid::kernel::activity::ActivityImplPtr(action->get_activity())->post();
}
XBT_DEBUG("Handling the processes whose action terminated normally (if any)");
- while ((action = surf_model_extract_done_action_set(model))) {
+ while ((action = model->extract_done_action())) {
XBT_DEBUG(" Handling Action %p",action);
- if (action->get_data() == nullptr)
+ if (action->get_activity() == nullptr)
XBT_DEBUG("probably vcpu's action %p, skip", action);
else
- SIMIX_simcall_exit(static_cast<simgrid::kernel::activity::ActivityImpl*>(action->get_data()));
+ simgrid::kernel::activity::ActivityImplPtr(action->get_activity())->post();
}
}
}
static bool SIMIX_execute_timers()
{
bool result = false;
- while (not simix_timers.empty() && SIMIX_get_clock() >= simix_timers.top().first) {
+ while (not simgrid::simix::simix_timers.empty() && SIMIX_get_clock() >= simgrid::simix::simix_timers.top().first) {
result = true;
- // FIXME: make the timers being real callbacks
- // (i.e. provide dispatchers that read and expand the args)
- smx_timer_t timer = simix_timers.top().second;
- simix_timers.pop();
- try {
- timer->callback();
- } catch (...) {
- xbt_die("Exception thrown ouf of timer callback");
- }
+ // FIXME: make the timers being real callbacks (i.e. provide dispatchers that read and expand the args)
+ smx_timer_t timer = simgrid::simix::simix_timers.top().second;
+ simgrid::simix::simix_timers.pop();
+ timer->callback();
delete timer;
}
return result;
}
-/** Execute all the tasks that are queued
- *
- * e.g. `.then()` callbacks of futures.
- **/
-static bool SIMIX_execute_tasks()
-{
- xbt_assert(simix_global->tasksTemp.empty());
-
- if (simix_global->tasks.empty())
- return false;
-
- using std::swap;
- do {
- // We don't want the callbacks to modify the vector we are iterating over:
- swap(simix_global->tasks, simix_global->tasksTemp);
-
- // Execute all the queued tasks:
- for (auto& task : simix_global->tasksTemp)
- task();
-
- simix_global->tasksTemp.clear();
- } while (not simix_global->tasks.empty());
-
- return true;
-}
-
/**
- * \ingroup SIMIX_API
- * \brief Run the main simulation loop.
+ * @ingroup SIMIX_API
+ * @brief Run the main simulation loop.
*/
void SIMIX_run()
{
double time = 0;
do {
- XBT_DEBUG("New Schedule Round; size(queue)=%zu", simix_global->process_to_run.size());
+ XBT_DEBUG("New Schedule Round; size(queue)=%zu", simix_global->actors_to_run.size());
- if (simgrid::simix::breakpoint >= 0.0 && time >= simgrid::simix::breakpoint) {
- XBT_DEBUG("Breakpoint reached (%g)", simgrid::simix::breakpoint.get());
- simgrid::simix::breakpoint = -1.0;
+ 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
#endif
}
- SIMIX_execute_tasks();
+ simix_global->execute_tasks();
- while (not simix_global->process_to_run.empty()) {
- XBT_DEBUG("New Sub-Schedule Round; size(queue)=%zu", simix_global->process_to_run.size());
+ 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_process_runall();
+ simix_global->run_all_actors();
/* answer sequentially and in a fixed arbitrary order all the simcalls that were issued during that sub-round */
/* Here, the order is ok because:
*
- * Short proof: only maestro adds stuff to the process_to_run array, so the execution order of user contexts do
+ * 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: processes remain sorted through an arbitrary (implicit, complex but fixed) order in all cases.
*
* - if there is no kill during the simulation, processes remain sorted according by their PID.
* Rationale: This can be proved inductively.
- * Assume that process_to_run is sorted at a beginning of one round (it is at round 0: the deployment file
+ * 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 a process 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 a process is added because it's getting killed, its subsequent actions shouldn't matter
- * - If a process gets added to process_to_run because one of their blocking action constituting the meat
+ * - If a process 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 SIMIX_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
* and the argument is very similar to the previous one.
* So, in any case, the orders of calls to SIMIX_comm_finish() do not depend on the order in which user
* processes are executed.
- * So, in any cases, the orders of processes within process_to_run do not depend on the order in which
+ * So, in any cases, the orders of processes within actors_to_run do not depend on the order in which
* user processes were executed previously.
* So, if there is no killing in the simulation, the simulation reproducibility is not jeopardized.
* - If there is some process killings, the order is changed by this decision that comes from user-land
*
* So science works, bitches [http://xkcd.com/54/].
*
- * We could sort the process_that_ran array completely so that we can describe the order in which simcalls are
+ * 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 (smx_actor_t const& process : simix_global->process_that_ran) {
+ for (smx_actor_t const& process : simix_global->actors_that_ran) {
if (process->simcall.call != SIMCALL_NONE) {
SIMIX_simcall_handle(&process->simcall, 0);
}
}
- SIMIX_execute_tasks();
+ simix_global->execute_tasks();
do {
SIMIX_wake_processes();
- } while (SIMIX_execute_tasks());
+ } 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_process_kill(dmon, simix_global->maestro_process);
+ simix_global->maestro_process->kill(dmon);
}
}
- time = SIMIX_timer_next();
+ time = simgrid::simix::Timer::next();
if (time > -1.0 || not simix_global->process_list.empty()) {
XBT_DEBUG("Calling surf_solve");
time = surf_solve(time);
bool again = false;
do {
again = SIMIX_execute_timers();
- if (SIMIX_execute_tasks())
+ if (simix_global->execute_tasks())
again = true;
SIMIX_wake_processes();
} while (again);
- /* Autorestart all process */
- for (auto const& host : host_that_restart) {
- XBT_INFO("Restart processes on host %s", host->get_cname());
- SIMIX_host_autorestart(host);
- }
- host_that_restart.clear();
-
- /* Clean processes to destroy */
- SIMIX_process_empty_trash();
+ /* 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->process_to_run.size());
+ simix_global->actors_to_run.size());
- } while (time > -1.0 || not simix_global->process_to_run.empty());
+ } while (time > -1.0 || not simix_global->actors_to_run.empty());
if (not simix_global->process_list.empty()) {
simgrid::s4u::on_simulation_end();
}
-/**
- * \brief Set the date to execute a function
- *
- * Set the date to execute the function on the surf.
- * \param date Date to execute function
- * \param callback Function to be executed
- * \param arg Parameters of the function
- *
- */
+double SIMIX_timer_next()
+{
+ return simgrid::simix::Timer::next();
+}
+
smx_timer_t SIMIX_timer_set(double date, void (*callback)(void*), void *arg)
{
- smx_timer_t timer = new s_smx_timer_t(date, simgrid::xbt::make_task([callback, arg]() { callback(arg); }));
- timer->handle_ = simix_timers.emplace(std::make_pair(date, timer));
- return timer;
+ return simgrid::simix::Timer::set(date, std::bind(callback, arg));
}
-smx_timer_t SIMIX_timer_set(double date, simgrid::xbt::Task<void()> callback)
+smx_timer_t SIMIX_timer_set(double date, simgrid::xbt::Task<void()>&& callback) // deprecated
{
- smx_timer_t timer = new s_smx_timer_t(date, std::move(callback));
- timer->handle_ = simix_timers.emplace(std::make_pair(date, timer));
- return timer;
+ return simgrid::simix::Timer::set(date, std::move(callback));
}
/** @brief cancels a timer that was added earlier */
void SIMIX_timer_remove(smx_timer_t timer) {
- simix_timers.erase(timer->handle_);
- delete timer;
+ timer->remove();
}
/** @brief Returns the date at which the timer will trigger (or 0 if nullptr timer) */
double SIMIX_timer_get_date(smx_timer_t timer) {
- return timer ? timer->getDate() : 0;
-}
-
-/**
- * \brief Registers a function to create a process.
- *
- * This function registers a function to be called
- * when a new process is created. The function has
- * to call SIMIX_process_create().
- * \param function create process function
- */
-void SIMIX_function_register_process_create(smx_creation_func_t function)
-{
- simix_global->create_process_function = function;
-}
-
-/**
- * \brief Registers a function to kill a process.
- *
- * This function registers a function to be called when a process is killed. The function has to call the
- * SIMIX_process_kill().
- *
- * \param function Kill process function
- */
-void SIMIX_function_register_process_kill(void_pfn_smxprocess_t function)
-{
- simix_global->kill_process_function = function;
-}
-
-/**
- * \brief Registers a function to cleanup a process.
- *
- * This function registers a user function to be called when a process ends properly.
- *
- * \param function cleanup process function
- */
-void SIMIX_function_register_process_cleanup(void_pfn_smxprocess_t function)
-{
- simix_global->cleanup_process_function = function;
+ return timer ? timer->get_date() : 0;
}
-
void SIMIX_display_process_status()
{
int nbprocess = simix_global->process_list.size();
if (process->waiting_synchro) {
const char* synchro_description = "unknown";
+ // we don't care about the Activity type to get its name, use RawImpl
+ const char* name =
+ boost::static_pointer_cast<simgrid::kernel::activity::ActivityImpl_T<simgrid::kernel::activity::RawImpl>>(
+ process->waiting_synchro)
+ ->get_cname();
if (boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(process->waiting_synchro) != nullptr)
synchro_description = "execution";
if (boost::dynamic_pointer_cast<simgrid::kernel::activity::IoImpl>(process->waiting_synchro) != nullptr)
synchro_description = "I/O";
- XBT_INFO("Process %ld (%s@%s): waiting for %s synchro %p (%s) in state %d to finish", process->pid,
- process->get_cname(), process->host->get_cname(), synchro_description, process->waiting_synchro.get(),
- process->waiting_synchro->name_.c_str(), (int)process->waiting_synchro->state_);
+ XBT_INFO("Process %ld (%s@%s): waiting for %s synchro %p (%s) in state %d to finish", process->get_pid(),
+ process->get_cname(), process->get_host()->get_cname(), synchro_description,
+ process->waiting_synchro.get(), name, (int)process->waiting_synchro->state_);
}
else {
- XBT_INFO("Process %ld (%s@%s)", process->pid, process->get_cname(), process->host->get_cname());
+ XBT_INFO("Process %ld (%s@%s)", process->get_pid(), process->get_cname(), process->get_host()->get_cname());
}
}
}
