namespace simgrid {
namespace simix {
-simgrid::config::Flag<double> cfg_verbose_exit{
- "debug/verbose-exit", {"verbose-exit"}, "Display the actor status at exit", true};
-}
+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 (simgrid::simix::cfg_verbose_exit) {
#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, 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;
}
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 %s (refcount: %d)", actor->get_cname(), actor->get_refcount());
intrusive_ptr_release(actor);
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};
-}
+/** Wake up all actors waiting for a Surf action to finish */
+void Global::wake_all_waiting_actors()
+{
+ for (auto const& model : all_existing_models) {
+ kernel::resource::Action* action;
+
+ XBT_DEBUG("Handling the failed actions (if any)");
+ while ((action = model->extract_failed_action())) {
+ XBT_DEBUG(" Handling Action %p", action);
+ if (action->get_activity() != nullptr)
+ kernel::activity::ActivityImplPtr(action->get_activity())->post();
+ }
+ XBT_DEBUG("Handling the terminated actions (if any)");
+ while ((action = model->extract_done_action())) {
+ XBT_DEBUG(" Handling Action %p", action);
+ if (action->get_activity() == nullptr)
+ XBT_DEBUG("probably vcpu's action %p, skip", action);
+ else
+ kernel::activity::ActivityImplPtr(action->get_activity())->post();
+ }
+ }
}
+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)
{
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 */
}
#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_global->context_factory->run_all();
+ simix_global->run_all_actors();
simix_global->empty_trash();
/* Exit the SIMIX network module */
}
}
-/** Wake up all processes waiting for a Surf action to finish */
-static void SIMIX_wake_processes()
-{
- for (auto const& model : all_existing_models) {
- simgrid::kernel::resource::Action* action;
-
- XBT_DEBUG("Handling the failed actions (if any)");
- while ((action = model->extract_failed_action())) {
- XBT_DEBUG(" Handling Action %p",action);
- if (action->get_activity() != nullptr)
- simgrid::kernel::activity::ActivityImplPtr(action->get_activity())->post();
- }
- XBT_DEBUG("Handling the terminated actions (if any)");
- while ((action = model->extract_done_action())) {
- XBT_DEBUG(" Handling Action %p",action);
- if (action->get_activity() == nullptr)
- XBT_DEBUG("probably vcpu's action %p, skip", action);
- else
- simgrid::kernel::activity::ActivityImplPtr(action->get_activity())->post();
- }
- }
-}
-
/** Handle any pending timer. Returns if something was actually run. */
static bool SIMIX_execute_timers()
{
* 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.
+ * Long proof: actors 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.
+ * - 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 a process is added when being created, that's from maestro. It can be either at startup
+ * - 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 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
+ * - 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.
+ * - 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:
* 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
- * poped out of the set does not depend on the user code's execution order.
+ * 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 SIMIX_comm_finish() do not depend on the order in which user
- * processes are executed.
- * 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, 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 process killings, the order is changed by this decision that comes from user-land
+ * - 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 process killing is perfectly reproducible.
+ * So, even the order change induced by the actor killing is perfectly reproducible.
*
* So science works, bitches [http://xkcd.com/54/].
*
* 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) {
- process->simcall_handle(0);
+ for (auto const& actor : simix_global->actors_that_ran) {
+ if (actor->simcall.call_ != SIMCALL_NONE) {
+ actor->simcall_handle(0);
}
}
simix_global->execute_tasks();
do {
- SIMIX_wake_processes();
+ 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 */
again = SIMIX_execute_timers();
if (simix_global->execute_tasks())
again = true;
- SIMIX_wake_processes();
+ simix_global->wake_all_waiting_actors();
} while (again);
/* Clean actors to destroy */
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, std::bind(callback, arg));
}
-smx_timer_t SIMIX_timer_set(double date, simgrid::xbt::Task<void()>&& callback) // deprecated
-{
- 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) {
+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 actor = kv.second;
+ simgrid::kernel::actor::ActorImpl* actor = kv.second;
if (actor->waiting_synchro) {
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;
}
