X-Git-Url: http://bilbo.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/5ec2b80b686983f84ebab7c7398a29e73286deee..2ad536e710c5936ff8e525e4bbb5e7046f292aac:/src/kernel/EngineImpl.cpp diff --git a/src/kernel/EngineImpl.cpp b/src/kernel/EngineImpl.cpp index f2914a0ff8..025228ae6e 100644 --- a/src/kernel/EngineImpl.cpp +++ b/src/kernel/EngineImpl.cpp @@ -8,18 +8,20 @@ #include #include #include -#include -#include "mc/mc.h" #include "src/kernel/EngineImpl.hpp" #include "src/kernel/resource/StandardLinkImpl.hpp" #include "src/kernel/resource/profile/Profile.hpp" +#include "src/kernel/xml/platf.hpp" +#include "src/mc/mc.h" #include "src/mc/mc_record.hpp" #include "src/mc/mc_replay.hpp" +#include "src/simgrid/math_utils.h" +#include "src/simgrid/sg_config.hpp" #include "src/smpi/include/smpi_actor.hpp" -#include "src/surf/xml/platf.hpp" -#include "xbt/module.h" -#include "xbt/xbt_modinter.h" /* whether initialization was already done */ +#include "src/xbt/xbt_modinter.h" /* whether initialization was already done */ + +#include "xbt/log.hpp" #include #include @@ -99,7 +101,7 @@ static void segvhandler(int signum, siginfo_t* siginfo, void* /*context*/) "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", - simgrid::kernel::context::stack_size / 1024); + simgrid::kernel::context::Context::stack_size / 1024); } else if (siginfo->si_signo == SIGSEGV) { fprintf(stderr, "Segmentation fault.\n"); #if HAVE_SMPI @@ -115,44 +117,38 @@ static void segvhandler(int signum, siginfo_t* siginfo, void* /*context*/) 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() +static void install_signal_handlers() { - stack_t old_stack; + /* Install signal handler for SIGINT */ + std::signal(SIGINT, inthandler); - if (simgrid::kernel::context::Context::install_sigsegv_stack(&old_stack, true) == -1) { + /* Install signal handler for SIGSEGV */ + if (simgrid::kernel::context::Context::install_sigsegv_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) { + if (sigaction(sig, &action, nullptr) == -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); - } } } +static simgrid::config::Flag cfg_dbg_clean_atexit{ + "debug/clean-atexit", "Whether to cleanup SimGrid at exit. Disable it if your code segfaults after its end.", true}; +static void xbt_postexit() +{ + if (not cfg_dbg_clean_atexit) + return; + xbt_log_postexit(); +} + namespace simgrid::kernel { EngineImpl::~EngineImpl() @@ -189,23 +185,30 @@ void EngineImpl::initialize(int* argc, char** argv) simgrid::mc::AppSide::initialize(); #endif - if (xbt_initialized == 0) { - xbt_init(argc, argv); + static bool inited = false; + if (not inited) { + inited = true; + atexit(xbt_postexit); + xbt_log_init(argc, argv); + + simgrid::xbt::install_exception_handler(); + + if (*argc > 0) + simgrid::xbt::binary_name = argv[0]; + for (int i = 0; i < *argc; i++) + simgrid::xbt::cmdline.emplace_back(argv[i]); sg_config_init(argc, argv); } instance_->context_mod_init(); - /* Prepare to display some more info when dying on Ctrl-C pressing */ - std::signal(SIGINT, inthandler); - install_segvhandler(); + install_signal_handlers(); - /* register a function to be called by SURF after the environment creation */ - sg_platf_init(); + /* register a function to be called after the environment creation */ s4u::Engine::on_platform_created_cb([this]() { this->presolve(); }); - if (config::get_value("debug/clean-atexit")) + if (cfg_dbg_clean_atexit) atexit(shutdown); } @@ -230,11 +233,6 @@ void EngineImpl::context_mod_init() const } #endif - /* select the context factory to use to create the contexts */ - if (context::ContextFactory::initializer) { // Give Java a chance to hijack the factory mechanism - instance_->set_context_factory(context::ContextFactory::initializer()); - return; - } /* use the factory specified by --cfg=contexts/factory:value */ for (auto const& [factory_name, factory] : context_factories) if (context_factory_name == factory_name) { @@ -260,7 +258,7 @@ void EngineImpl::context_mod_init() const XBT_ERROR(" (boost was disabled at compilation time on this machine -- check configure logs for details. Did you " "install the libboost-context-dev package?)"); #endif - XBT_ERROR(" thread: slow portability layer using pthreads as provided by gcc"); + XBT_ERROR(" thread: slow portability layer using standard threads as provided by libstdc"); xbt_die("Please use a valid factory."); } } @@ -294,7 +292,7 @@ void EngineImpl::shutdown() } tmgr_finalize(); - sg_platf_exit(); + sg_platf_parser_finalize(); delete instance_; instance_ = nullptr; @@ -334,12 +332,11 @@ void EngineImpl::load_platform(const std::string& platf) void EngineImpl::load_deployment(const std::string& file) const { - sg_platf_exit(); - sg_platf_init(); + sg_platf_parser_finalize(); - surf_parse_open(file); - surf_parse(); - surf_parse_close(); + simgrid_parse_open(file); + simgrid_parse(); + simgrid_parse_close(); } void EngineImpl::register_function(const std::string& name, const actor::ActorCodeFactory& code) @@ -365,7 +362,7 @@ void EngineImpl::add_model(std::shared_ptr model, const std::ve models_prio_[model_name] = std::move(model); } -/** Wake up all actors waiting for a Surf action to finish */ +/** Wake up all actors waiting for an action to finish */ void EngineImpl::handle_ended_actions() const { for (auto const& model : models_) { @@ -575,13 +572,12 @@ double EngineImpl::solve(double max_date) const while (auto* event = profile::future_evt_set.pop_leq(next_event_date, &value, &resource)) { if(value<0) continue; - if (resource->is_used() || (watched_hosts().find(resource->get_cname()) != watched_hosts().end())) { + if (resource->is_used()) { time_delta = next_event_date - now_; XBT_DEBUG("This event invalidates the next_occurring_event() computation of models. Next event set to %f", time_delta); } - // FIXME: I'm too lame to update now_ live, so I change it and restore it so that the real update with surf_min - // will work + // FIXME: I'm too lame to update now_ live, so I change it and restore it so that the real update works double round_start = now_; now_ = next_event_date; /* update state of the corresponding resource to the new value. Does not touch lmm.