#include "simgrid/kernel/resource/Model.hpp"
-#if SIMGRID_HAVE_MC
-#include "src/mc/remote/AppSide.hpp"
-#endif
-
#include <memory>
XBT_LOG_NEW_CATEGORY(simix, "All SIMIX categories");
namespace simgrid {
namespace simix {
-config::Flag<bool> cfg_verbose_exit{"debug/verbose-exit", "Display the actor status at exit", true};
xbt_dynar_t simix_global_get_actors_addr()
{
} // namespace simix
} // namespace simgrid
-XBT_ATTRIB_NORETURN static void inthandler(int)
-{
- 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').");
- simgrid::kernel::EngineImpl::get_instance()->display_all_actor_status();
- } else {
- 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) || 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");
-#if HAVE_SMPI
- if (smpi_enabled() && smpi_cfg_privatization() == SmpiPrivStrategies::NONE) {
-#if HAVE_PRIVATIZATION
- fprintf(stderr, "Try to enable SMPI variable privatization with --cfg=smpi/privatization:yes.\n");
-#else
- fprintf(stderr, "Sadly, your system does not support --cfg=smpi/privatization:yes (yet).\n");
-#endif /* HAVE_PRIVATIZATION */
- }
-#endif /* HAVE_SMPI */
- }
- std::raise(signum);
-}
-
-/**
- * Install signal handler for SIGSEGV. Check that nobody has already installed
- * its own handler. For example, the Java VM does this.
- */
-static void install_segvhandler()
-{
- stack_t old_stack;
-
- if (simgrid::kernel::context::Context::install_sigsegv_stack(&old_stack, true) == -1) {
- XBT_WARN("Failed to register alternate signal stack: %s", strerror(errno));
- return;
- }
- if (not(old_stack.ss_flags & SS_DISABLE)) {
- XBT_DEBUG("An alternate stack was already installed (sp=%p, size=%zu, flags=%x). Restore it.", old_stack.ss_sp,
- old_stack.ss_size, (unsigned)old_stack.ss_flags);
- sigaltstack(&old_stack, nullptr);
- }
-
- struct sigaction action;
- struct sigaction old_action;
- action.sa_sigaction = &segvhandler;
- action.sa_flags = SA_ONSTACK | SA_RESETHAND | SA_SIGINFO;
- sigemptyset(&action.sa_mask);
-
- /* 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);
- }
- }
-}
-
-#endif /* _WIN32 */
static simgrid::kernel::actor::ActorCode maestro_code;
void SIMIX_set_maestro(void (*code)(void*), void* data)
simix_global = std::make_unique<simgrid::simix::Global>();
-#if SIMGRID_HAVE_MC
- // The communication initialization is done ASAP, as we need to get some init parameters from the MC for different
- // layers. But simix_global needs to be created, as we send the address of some of its fields to the MC that wants to
- // read them directly.
- simgrid::mc::AppSide::initialize();
-#endif
-
- 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 maestro):
simgrid::kernel::actor::create_maestro(maestro_code);
-
- /* Prepare to display some more info when dying on Ctrl-C pressing */
- std::signal(SIGINT, inthandler);
-
-#ifndef _WIN32
- install_segvhandler();
-#endif
- /* register a function to be called by SURF after the environment creation */
- sg_platf_init();
- simgrid::s4u::Engine::on_platform_created.connect(surf_presolve);
-
- if (simgrid::config::get_value<bool>("debug/clean-atexit"))
- atexit(simgrid::kernel::EngineImpl::shutdown);
}
/**
