void (*SMPI_switch_data_segment)(simgrid::s4u::ActorPtr) = nullptr;
-bool _sg_do_verbose_exit = true;
-static void inthandler(int)
+namespace simgrid {
+namespace simix {
+config::Flag<double> cfg_verbose_exit{"debug/verbose-exit", {"verbose-exit"}, "Display the actor status at exit", true};
+} // namespace simix
+} // 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);
}
#ifndef _WIN32
static void segvhandler(int signum, siginfo_t* siginfo, void* /*context*/)
{
- if (siginfo->si_signo == SIGSEGV && siginfo->si_code == SEGV_ACCERR) {
- fprintf(stderr, "Access violation detected.\n"
- "This probably comes from a programming error in your code, or from a stack\n"
- "overflow. If you are certain of your code, try increasing the stack size\n"
- " --cfg=contexts/stack-size=XXX (current size is %u KiB).\n"
- "\n"
- "If it does not help, this may have one of the following causes:\n"
- "a bug in SimGrid, a bug in the OS or a bug in a third-party libraries.\n"
- "Failing hardware can sometimes generate such errors too.\n"
- "\n"
- "If you think you've found a bug in SimGrid, please report it along with a\n"
- "Minimal Working Example (MWE) reproducing your problem and a full backtrace\n"
- "of the fault captured with gdb or valgrind.\n",
+ if ((siginfo->si_signo == SIGSEGV && siginfo->si_code == SEGV_ACCERR) || siginfo->si_signo == SIGBUS) {
+ fprintf(stderr,
+ "Access violation or Bus error detected.\n"
+ "This probably comes from a programming error in your code, or from a stack\n"
+ "overflow. If you are certain of your code, try increasing the stack size\n"
+ " --cfg=contexts/stack-size=XXX (current size is %u KiB).\n"
+ "\n"
+ "If it does not help, this may have one of the following causes:\n"
+ "a bug in SimGrid, a bug in the OS or a bug in a third-party libraries.\n"
+ "Failing hardware can sometimes generate such errors too.\n"
+ "\n"
+ "If you think you've found a bug in SimGrid, please report it along with a\n"
+ "Minimal Working Example (MWE) reproducing your problem and a full backtrace\n"
+ "of the fault captured with gdb or valgrind.\n",
smx_context_stack_size / 1024);
} else if (siginfo->si_signo == SIGSEGV) {
fprintf(stderr, "Segmentation fault.\n");
action.sa_flags = SA_ONSTACK | SA_RESETHAND | SA_SIGINFO;
sigemptyset(&action.sa_mask);
- if (sigaction(SIGSEGV, &action, &old_action) == -1) {
- XBT_WARN("Failed to register signal handler for SIGSEGV: %s", strerror(errno));
- return;
- }
- if ((old_action.sa_flags & SA_SIGINFO) || old_action.sa_handler != SIG_DFL) {
- XBT_DEBUG("A signal handler was already installed for SIGSEGV (%p). Restore it.",
- (old_action.sa_flags & SA_SIGINFO) ? (void*)old_action.sa_sigaction : (void*)old_action.sa_handler);
- sigaction(SIGSEGV, &old_action, nullptr);
+ /* Linux tend to raise only SIGSEGV where other systems also raise SIGBUS on severe error */
+ for (int sig : {SIGSEGV, SIGBUS}) {
+ if (sigaction(sig, &action, &old_action) == -1) {
+ XBT_WARN("Failed to register signal handler for signal %d: %s", sig, strerror(errno));
+ continue;
+ }
+ if ((old_action.sa_flags & SA_SIGINFO) || old_action.sa_handler != SIG_DFL) {
+ XBT_DEBUG("A signal handler was already installed for signal %d (%p). Restore it.", sig,
+ (old_action.sa_flags & SA_SIGINFO) ? (void*)old_action.sa_sigaction : (void*)old_action.sa_handler);
+ sigaction(sig, &old_action, nullptr);
+ }
}
}
namespace simgrid {
namespace simix {
-Timer* Timer::set(double date, void (*callback)(void*), void* arg)
-{
- Timer* timer = new Timer(date, simgrid::xbt::make_task([callback, arg]() { callback(arg); }));
- timer->handle_ = simix_timers.emplace(std::make_pair(date, timer));
- return timer;
-}
-
-Timer* Timer::set(double date, simgrid::xbt::Task<void()> callback)
+Timer* Timer::set(double date, xbt::Task<void()>&& callback)
{
Timer* timer = new Timer(date, std::move(callback));
timer->handle_ = simix_timers.emplace(std::make_pair(date, timer));
/** @brief cancels a timer that was added earlier */
void Timer::remove()
{
- simgrid::simix::simix_timers.erase(handle_);
+ 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());
+
+ if (tasks.empty())
+ return false;
+
+ do {
+ // We don't want the callbacks to modify the vector we are iterating over:
+ tasks.swap(tasksTemp);
+
+ // 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();
+ kernel::actor::ActorImpl* actor = &actors_to_destroy.front();
actors_to_destroy.pop_front();
- XBT_DEBUG("Getting rid of %p", actor);
+ XBT_DEBUG("Getting rid of %s (refcount: %d)", actor->get_cname(), actor->get_refcount());
intrusive_ptr_release(actor);
}
#if SIMGRID_HAVE_MC
- xbt_dynar_reset(simix_global->dead_actors_vector);
+ xbt_dynar_reset(dead_actors_vector);
#endif
}
/**
- * @brief Executes the actors in simix_global->actors_to_run.
+ * @brief Executes the actors in actors_to_run.
*
- * The actors in simix_global->actors_to_run are run (in parallel if possible). On exit, simix_global->actors_to_run
- * is empty, and simix_global->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.
+ * 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();
+ simix_global->context_factory->run_all();
- simix_global->actors_to_run.swap(simix_global->actors_that_ran);
- simix_global->actors_to_run.clear();
+ actors_to_run.swap(actors_that_ran);
+ actors_to_run.clear();
}
-simgrid::config::Flag<double> breakpoint{"simix/breakpoint",
- "When non-negative, raise a SIGTRAP after given (simulated) time", -1.0};
-}
-}
+config::Flag<double> cfg_breakpoint{
+ "debug/breakpoint", {"simix/breakpoint"}, "When non-negative, raise a SIGTRAP after given (simulated) time", -1.0};
+} // namespace simix
+} // namespace simgrid
static simgrid::simix::ActorCode maestro_code;
void SIMIX_set_maestro(void (*code)(void*), void* data)
#endif
if (simix_global == nullptr) {
+ surf_init(argc, argv); /* Initialize SURF structures */
+
simix_global.reset(new simgrid::simix::Global());
simix_global->maestro_process = nullptr;
-
- surf_init(argc, argv); /* Initialize SURF structures */
SIMIX_context_mod_init();
// Either create a new context with maestro or create
- // a context object with the current context mestro):
+ // a context object with the current context maestro):
simgrid::kernel::actor::create_maestro(maestro_code);
/* Prepare to display some more info when dying on Ctrl-C pressing */
#endif
/* register a function to be called by SURF after the environment creation */
sg_platf_init();
- simgrid::s4u::on_platform_created.connect(surf_presolve);
+ simgrid::s4u::Engine::on_platform_created.connect(surf_presolve);
- simgrid::s4u::Storage::on_creation.connect([](simgrid::s4u::Storage& storage) {
+ 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;
}
#if HAVE_SMPI
- if (SIMIX_process_count()>0){
+ if (simix_global->process_list.size() > 0) {
if(smpi_process()->initialized()){
xbt_die("Process exited without calling MPI_Finalize - Killing simulation");
}else{
/* Kill all processes (but maestro) */
simix_global->maestro_process->kill_all();
- SIMIX_context_runall();
+ simix_global->run_all_actors();
simix_global->empty_trash();
/* Exit the SIMIX network module */
#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;
for (auto const& model : all_existing_models) {
simgrid::kernel::resource::Action* action;
- XBT_DEBUG("Handling the processes whose action failed (if any)");
+ XBT_DEBUG("Handling the failed actions (if any)");
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)");
+ XBT_DEBUG("Handling the terminated actions (if any)");
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();
}
}
}
-/** Handle any pending timer */
+/** Handle any pending timer. Returns if something was actually run. */
static bool SIMIX_execute_timers()
{
bool result = false;
// 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();
- try {
- timer->callback();
- } catch (...) {
- xbt_die("Exception thrown ouf of timer callback");
- }
+ 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;
-
- do {
- // We don't want the callbacks to modify the vector we are iterating over:
- simix_global->tasks.swap(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.
*/
void SIMIX_run()
{
- if (not MC_record_path.empty()) {
+ if (MC_record_replay_is_active()) {
simgrid::mc::replay(MC_record_path);
return;
}
do {
XBT_DEBUG("New Schedule Round; size(queue)=%zu", simix_global->actors_to_run.size());
- if (simgrid::simix::breakpoint >= 0.0 && surf_get_clock() >= 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->actors_to_run.empty()) {
XBT_DEBUG("New Sub-Schedule Round; size(queue)=%zu", simix_global->actors_to_run.size());
* - If a process is added because it's getting killed, its subsequent actions shouldn't matter
* - 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
+ * - 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().
* That would thus be a pure waste of time.
*/
- for (smx_actor_t const& process : simix_global->actors_that_ran) {
- if (process->simcall.call != SIMCALL_NONE) {
- SIMIX_simcall_handle(&process->simcall, 0);
+ for (auto const& actor : simix_global->actors_that_ran) {
+ if (actor->simcall.call_ != SIMCALL_NONE) {
+ actor->simcall_handle(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())
bool again = false;
do {
again = SIMIX_execute_timers();
- if (SIMIX_execute_tasks())
+ if (simix_global->execute_tasks())
again = true;
SIMIX_wake_processes();
} while (again);
XBT_CRITICAL("Oops! Deadlock or code not perfectly clean.");
}
SIMIX_display_process_status();
- simgrid::s4u::on_deadlock();
+ simgrid::s4u::Engine::on_deadlock();
xbt_abort();
}
- simgrid::s4u::on_simulation_end();
+ simgrid::s4u::Engine::on_simulation_end();
}
-double SIMIX_timer_next()
+double SIMIX_timer_next() // XBT_ATTRIB_DEPRECATED_v329
{
return simgrid::simix::Timer::next();
}
-smx_timer_t SIMIX_timer_set(double date, void (*callback)(void*), void *arg)
+smx_timer_t SIMIX_timer_set(double date, void (*callback)(void*), void* arg) // XBT_ATTRIB_DEPRECATED_v329
{
- return simgrid::simix::Timer::set(date, callback, arg);
-}
-
-smx_timer_t SIMIX_timer_set(double date, simgrid::xbt::Task<void()> callback)
-{
- smx_timer_t timer = new simgrid::simix::Timer(date, std::move(callback));
- timer->handle_ = simgrid::simix::simix_timers.emplace(std::make_pair(date, timer));
- return timer;
+ return simgrid::simix::Timer::set(date, std::bind(callback, arg));
}
/** @brief cancels a timer that was added earlier */
-void SIMIX_timer_remove(smx_timer_t timer) {
+void SIMIX_timer_remove(smx_timer_t timer) // XBT_ATTRIB_DEPRECATED_v329
+{
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) {
+double SIMIX_timer_get_date(smx_timer_t timer) // XBT_ATTRIB_DEPRECATED_v329
+{
return timer ? timer->get_date() : 0;
}
/* List the process and their state */
XBT_INFO("Legend of the following listing: \"Process <pid> (<name>@<host>): <status>\"");
for (auto const& kv : simix_global->process_list) {
- smx_actor_t process = kv.second;
+ simgrid::kernel::actor::ActorImpl* actor = kv.second;
- if (process->waiting_synchro) {
+ if (actor->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>>(
+ actor->waiting_synchro)
+ ->get_cname();
- if (boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(process->waiting_synchro) != nullptr)
+ if (boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(actor->waiting_synchro) != nullptr)
synchro_description = "execution";
- if (boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(process->waiting_synchro) != nullptr)
+ if (boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(actor->waiting_synchro) != nullptr)
synchro_description = "communication";
- if (boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(process->waiting_synchro) != nullptr)
+ if (boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(actor->waiting_synchro) != nullptr)
synchro_description = "sleeping";
- if (boost::dynamic_pointer_cast<simgrid::kernel::activity::RawImpl>(process->waiting_synchro) != nullptr)
+ if (boost::dynamic_pointer_cast<simgrid::kernel::activity::RawImpl>(actor->waiting_synchro) != nullptr)
synchro_description = "synchronization";
- if (boost::dynamic_pointer_cast<simgrid::kernel::activity::IoImpl>(process->waiting_synchro) != nullptr)
+ if (boost::dynamic_pointer_cast<simgrid::kernel::activity::IoImpl>(actor->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->get_pid(),
- process->get_cname(), process->get_host()->get_cname(), synchro_description,
- process->waiting_synchro.get(), process->waiting_synchro->get_cname(),
- (int)process->waiting_synchro->state_);
+ XBT_INFO("Actor %ld (%s@%s): waiting for %s activity %p (%s) in state %d to finish", actor->get_pid(),
+ actor->get_cname(), actor->get_host()->get_cname(), synchro_description, actor->waiting_synchro.get(),
+ name, (int)actor->waiting_synchro->state_);
}
else {
- XBT_INFO("Process %ld (%s@%s)", process->get_pid(), process->get_cname(), process->get_host()->get_cname());
+ XBT_INFO("Actor %ld (%s@%s)", actor->get_pid(), actor->get_cname(), actor->get_host()->get_cname());
}
}
}
int SIMIX_is_maestro()
{
- smx_actor_t self = SIMIX_process_self();
- return simix_global == nullptr /*SimDag*/ || self == nullptr || self == simix_global->maestro_process;
+ if (simix_global == nullptr) // SimDag
+ return true;
+ simgrid::kernel::actor::ActorImpl* self = SIMIX_process_self();
+ return self == nullptr || self == simix_global->maestro_process;
}
