-/* Copyright (c) 2007-2015. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2007-2018. 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 <signal.h> /* Signal handling */
-#include <stdlib.h>
+#include <boost/heap/fibonacci_heap.hpp>
+#include <functional>
+#include <memory>
+
#include "src/internal_config.h"
+#include <csignal> /* Signal handling */
+#include <cstdlib>
+
+#include <xbt/functional.hpp>
+#include <xbt/utility.hpp>
+
+#include "simgrid/s4u/Engine.hpp"
+#include "simgrid/s4u/Host.hpp"
+#include "smx_private.hpp"
#include "src/surf/surf_interface.hpp"
-#include "src/surf/storage_interface.hpp"
#include "src/surf/xml/platf.hpp"
-#include "smx_private.h"
-#include "xbt/str.h"
-#include "xbt/ex.h" /* ex_backtrace_display */
+#include "xbt/ex.h" /* ex_backtrace_display */
+
#include "mc/mc.h"
-#include "src/mc/mc_replay.h"
#include "simgrid/sg_config.h"
+#include "src/mc/mc_replay.hpp"
+#include "src/surf/StorageImpl.hpp"
-#include "src/simix/SynchroExec.hpp"
-#include "src/simix/SynchroComm.hpp"
-#include "src/simix/SynchroSleep.hpp"
-#include "src/simix/SynchroIo.hpp"
-#include "src/simix/SynchroRaw.hpp"
+#include "src/smpi/include/smpi_process.hpp"
-#if HAVE_MC
-#include "src/mc/mc_private.h"
-#include "src/mc/mc_protocol.h"
-#include "src/mc/Client.hpp"
+#include "src/kernel/activity/CommImpl.hpp"
+#include "src/kernel/activity/ExecImpl.hpp"
+#include "src/kernel/activity/SleepImpl.hpp"
+#include "src/kernel/activity/SynchroIo.hpp"
+#include "src/kernel/activity/SynchroRaw.hpp"
-#include <stdlib.h>
-#include "src/mc/mc_protocol.h"
-#endif
+#if SIMGRID_HAVE_MC
+#include "src/mc/mc_private.hpp"
+#include "src/mc/remote/Client.hpp"
+#include "src/mc/remote/mc_protocol.h"
+#endif
-#include "src/mc/mc_record.h"
+#include "src/mc/mc_record.hpp"
#if HAVE_SMPI
-#include "src/smpi/private.h"
+#include "src/smpi/include/private.hpp"
#endif
XBT_LOG_NEW_CATEGORY(simix, "All SIMIX categories");
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_kernel, simix, "Logging specific to SIMIX (kernel)");
-smx_global_t simix_global = NULL;
-static xbt_heap_t simix_timers = NULL;
+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 */
-typedef struct s_smx_timer {
- double date;
- void(* func)(void*);
- void* args;
-} s_smx_timer_t;
+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)(int) = NULL;
+void (*SMPI_switch_data_segment)(int) = nullptr;
int _sg_do_verbose_exit = 1;
-static void inthandler(int ignored)
+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').");
}
#ifndef _WIN32
-static void segvhandler(int signum, siginfo_t *siginfo, void *context)
+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 can result from a programming error in your code or, although less likely,\n"
- "from a bug in SimGrid itself. This can also be the sign of a bug in the OS or\n"
- "in third-party libraries. Failing hardware can sometimes generate such errors\n"
- "too.\n"
- "Finally, if nothing of the above applies, this can result from a stack overflow.\n"
- "Try to increase stack size with --cfg=contexts/stack_size (current size is %d KiB).\n",
+ 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",
smx_context_stack_size / 1024);
- if (XBT_LOG_ISENABLED(simix_kernel, xbt_log_priority_debug)) {
- fprintf(stderr,
- "siginfo = {si_signo = %d, si_errno = %d, si_code = %d, si_addr = %p}\n",
- siginfo->si_signo, siginfo->si_errno, siginfo->si_code, siginfo->si_addr);
- }
} else if (siginfo->si_signo == SIGSEGV) {
fprintf(stderr, "Segmentation fault.\n");
#if HAVE_SMPI
- if (smpi_enabled() && !smpi_privatize_global_variables) {
+ if (smpi_enabled() && smpi_privatize_global_variables == SMPI_PRIVATIZE_NONE) {
#if HAVE_PRIVATIZATION
- fprintf(stderr,
- "Try to enable SMPI variable privatization with --cfg=smpi/privatize-global-variables:yes.\n");
+ 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/privatize-global-variables:yes (yet).\n");
+ fprintf(stderr, "Sadly, your system does not support --cfg=smpi/privatization:yes (yet).\n");
#endif /* HAVE_PRIVATIZATION */
}
#endif /* HAVE_SMPI */
* 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(void)
+static void install_segvhandler()
{
- stack_t stack, old_stack;
+ stack_t stack;
+ stack_t old_stack;
stack.ss_sp = sigsegv_stack;
stack.ss_size = sizeof sigsegv_stack;
stack.ss_flags = 0;
XBT_WARN("Failed to register alternate signal stack: %s", strerror(errno));
return;
}
- if (!(old_stack.ss_flags & SS_DISABLE)) {
- XBT_DEBUG("An alternate stack was already installed (sp=%p, size=%zd, flags=%x). Restore it.",
- old_stack.ss_sp, old_stack.ss_size, old_stack.ss_flags);
- sigaltstack(&old_stack, NULL);
+ 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, old_action;
- action.sa_sigaction = segvhandler;
+ struct sigaction action;
+ struct sigaction old_action;
+ action.sa_sigaction = &segvhandler;
action.sa_flags = SA_ONSTACK | SA_RESETHAND | SA_SIGINFO;
sigemptyset(&action.sa_mask);
}
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, NULL);
+ (old_action.sa_flags & SA_SIGINFO) ? (void*)old_action.sa_sigaction : (void*)old_action.sa_handler);
+ sigaction(SIGSEGV, &old_action, nullptr);
}
}
#endif /* _WIN32 */
/********************************* SIMIX **************************************/
-double SIMIX_timer_next(void)
+double SIMIX_timer_next()
{
- return xbt_heap_size(simix_timers) > 0 ? xbt_heap_maxkey(simix_timers) : -1.0;
+ return simix_timers.empty() ? -1.0 : simix_timers.top().first;
}
-static void kill_process(smx_process_t process)
+static void kill_process(smx_actor_t process)
{
- SIMIX_process_kill(process, NULL);
+ SIMIX_process_kill(process, nullptr);
}
static std::function<void()> maestro_code;
namespace simgrid {
namespace simix {
+simgrid::xbt::signal<void()> onDeadlock;
+
XBT_PUBLIC(void) set_maestro(std::function<void()> code)
{
maestro_code = std::move(code);
void SIMIX_set_maestro(void (*code)(void*), void* data)
{
+#ifdef _WIN32
+ XBT_INFO("WARNING, SIMIX_set_maestro is believed to not work on windows. Please help us investigating this issue if you need that feature");
+#endif
maestro_code = std::bind(code, data);
}
*/
void SIMIX_global_init(int *argc, char **argv)
{
-#if HAVE_MC
+#if SIMGRID_HAVE_MC
// The communication initialization is done ASAP.
// We need to communicate initialization of the different layers to the model-checker.
simgrid::mc::Client::initialize();
#endif
- s_smx_process_t proc;
-
- if (!simix_global) {
- simix_global = xbt_new0(s_smx_global_t, 1);
-
- simix_global->process_to_run = xbt_dynar_new(sizeof(smx_process_t), NULL);
- simix_global->process_that_ran = xbt_dynar_new(sizeof(smx_process_t), NULL);
- simix_global->process_list = xbt_swag_new(xbt_swag_offset(proc, process_hookup));
- simix_global->process_to_destroy = xbt_swag_new(xbt_swag_offset(proc, destroy_hookup));
-
- simix_global->maestro_process = NULL;
- simix_global->registered_functions = xbt_dict_new_homogeneous(NULL);
-
- simix_global->create_process_function = SIMIX_process_create;
- simix_global->kill_process_function = kill_process;
- simix_global->cleanup_process_function = SIMIX_process_cleanup;
+ 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();
surf_init(argc, argv); /* Initialize SURF structures */
// a context object with the current context mestro):
simgrid::simix::create_maestro(maestro_code);
- /* context exception handlers */
- __xbt_running_ctx_fetch = SIMIX_process_get_running_context;
- __xbt_ex_terminate = SIMIX_process_exception_terminate;
-
/* Prepare to display some more info when dying on Ctrl-C pressing */
signal(SIGINT, inthandler);
#endif
/* register a function to be called by SURF after the environment creation */
sg_platf_init();
- simgrid::surf::on_postparse.connect(SIMIX_post_create_environment);
+ simgrid::s4u::onPlatformCreated.connect(SIMIX_post_create_environment);
simgrid::s4u::Host::onCreation.connect([](simgrid::s4u::Host& host) {
- SIMIX_host_create(&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());
});
- SIMIX_HOST_LEVEL = simgrid::s4u::Host::extension_create(SIMIX_host_destroy);
-
- simgrid::surf::storageCreatedCallbacks.connect([](simgrid::surf::Storage* storage) {
- const char* name = storage->getName();
- // TODO, create sg_storage_by_name
- sg_storage_t s = xbt_lib_get_elm_or_null(storage_lib, name);
- xbt_assert(s != NULL, "Storage not found for name %s", name);
- SIMIX_storage_create(name, s, NULL);
+ simgrid::surf::storageCreatedCallbacks.connect([](simgrid::surf::StorageImpl* storage) {
+ sg_storage_t s = simgrid::s4u::Storage::byName(storage->getCname());
+ xbt_assert(s != nullptr, "Storage not found for name %s", storage->getCname());
});
-
- SIMIX_STORAGE_LEVEL = xbt_lib_add_level(storage_lib, SIMIX_storage_destroy);
- }
- if (!simix_timers) {
- simix_timers = xbt_heap_new(8, &free);
}
if (xbt_cfg_get_boolean("clean-atexit"))
*
* This functions remove the memory used by SIMIX
*/
-void SIMIX_clean(void)
+void SIMIX_clean()
{
- if (smx_cleaned) return; // to avoid double cleaning by java and C
+ if (smx_cleaned)
+ return; // to avoid double cleaning by java and C
+
smx_cleaned = 1;
XBT_DEBUG("SIMIX_clean called. Simulation's over.");
- if (!xbt_dynar_is_empty(simix_global->process_to_run) && SIMIX_get_clock() == 0.0) {
+ if (not simix_global->process_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.");
xbt_die("Bailing out to avoid that stop-before-start madness. Please fix your code.");
}
+
+#if HAVE_SMPI
+ if (SIMIX_process_count()>0){
+ if(smpi_process()->initialized()){
+ xbt_die("Process exited without calling MPI_Finalize - Killing simulation");
+ }else{
+ XBT_WARN("Process called exit when leaving - Skipping cleanups");
+ return;
+ }
+ }
+#endif
+
/* Kill all processes (but maestro) */
SIMIX_process_killall(simix_global->maestro_process, 1);
+ SIMIX_context_runall();
+ SIMIX_process_empty_trash();
/* Exit the SIMIX network module */
SIMIX_mailbox_exit();
- xbt_heap_free(simix_timers);
- simix_timers = NULL;
+ while (not simix_timers.empty()) {
+ delete simix_timers.top().second;
+ simix_timers.pop();
+ }
/* Free the remaining data structures */
- xbt_dynar_free(&simix_global->process_to_run);
- xbt_dynar_free(&simix_global->process_that_ran);
- xbt_swag_free(simix_global->process_to_destroy);
- xbt_swag_free(simix_global->process_list);
- simix_global->process_list = NULL;
- simix_global->process_to_destroy = NULL;
- xbt_dict_free(&(simix_global->registered_functions));
+ simix_global->process_to_run.clear();
+ simix_global->process_that_ran.clear();
+ simix_global->process_to_destroy.clear();
+ simix_global->process_list.clear();
xbt_os_mutex_destroy(simix_global->mutex);
- simix_global->mutex = NULL;
+ 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;
- xbt_free(simix_global->maestro_process->running_ctx);
- xbt_free(simix_global->maestro_process);
- simix_global->maestro_process = NULL;
-
- /* Restore the default exception setup */
- __xbt_running_ctx_fetch = &__xbt_ex_ctx_default;
- __xbt_ex_terminate = &__xbt_ex_terminate_default;
+ simix_global->maestro_process->context = nullptr;
+ delete simix_global->maestro_process;
+ simix_global->maestro_process = nullptr;
/* Finish context module and SURF */
SIMIX_context_mod_exit();
surf_exit();
- xbt_free(simix_global);
- simix_global = NULL;
-
- return;
+ simix_global = nullptr;
}
*
* \return Return the clock.
*/
-double SIMIX_get_clock(void)
+double SIMIX_get_clock()
{
if(MC_is_active() || MC_record_replay_is_active()){
return MC_process_clock_get(SIMIX_process_self());
}
}
-static int process_syscall_color(void *p)
+/** Wake up all processes waiting for a Surf action to finish */
+static void SIMIX_wake_processes()
{
- switch ((*(smx_process_t *)p)->simcall.call) {
- case SIMCALL_NONE:
- case SIMCALL_PROCESS_KILL:
- return 2;
- case SIMCALL_PROCESS_RESUME:
- return 1;
- default:
- return 0;
+ 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))) {
+ XBT_DEBUG(" Handling Action %p",action);
+ SIMIX_simcall_exit(static_cast<simgrid::kernel::activity::ActivityImpl*>(action->getData()));
+ }
+ XBT_DEBUG("Handling the processes whose action terminated normally (if any)");
+ while ((action = surf_model_extract_done_action_set(model))) {
+ XBT_DEBUG(" Handling Action %p",action);
+ if (action->getData() == nullptr)
+ XBT_DEBUG("probably vcpu's action %p, skip", action);
+ else
+ SIMIX_simcall_exit(static_cast<simgrid::kernel::activity::ActivityImpl*>(action->getData()));
+ }
+ }
+}
+
+/** Handle any pending timer */
+static bool SIMIX_execute_timers()
+{
+ bool result = false;
+ while (not simix_timers.empty() && SIMIX_get_clock() >= 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");
+ }
+ 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.
*/
-void SIMIX_run(void)
+void SIMIX_run()
{
- if (MC_record_path) {
+ if (not MC_record_path.empty()) {
simgrid::mc::replay(MC_record_path);
return;
}
double time = 0;
- smx_process_t process;
- surf_action_t action;
- smx_timer_t timer;
- surf_model_t model;
- unsigned int iter;
do {
- XBT_DEBUG("New Schedule Round; size(queue)=%lu",
- xbt_dynar_length(simix_global->process_to_run));
- while (!xbt_dynar_is_empty(simix_global->process_to_run)) {
- XBT_DEBUG("New Sub-Schedule Round; size(queue)=%lu",
- xbt_dynar_length(simix_global->process_to_run));
+ XBT_DEBUG("New Schedule Round; size(queue)=%zu", simix_global->process_to_run.size());
+
+ SIMIX_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());
/* Run all processes that are ready to run, possibly in parallel */
SIMIX_process_runall();
- /* Move all killer processes to the end of the list, because killing a process that have an ongoing simcall is a bad idea */
- xbt_dynar_three_way_partition(simix_global->process_that_ran, process_syscall_color);
-
/* answer sequentially and in a fixed arbitrary order all the simcalls that were issued during that sub-round */
/* WARNING, the order *must* be fixed or you'll jeopardize the simulation reproducibility (see RR-7653) */
/* 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 not impact its order.
+ * Short proof: only maestro adds stuff to the process_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.
- * rational: 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 is parsed linearly).
+ * 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
+ * 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
* - If a process gets added to process_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 example.
+ * 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:
* - before the comm starts (invalid parameters, or resource already dead or whatever).
* The order then trivial holds since maestro didn't interrupt its handling of the simcall yet
- * - because the communication failed or were canceled after startup. In this case, it's called from the function
- * we are in, by the chunk:
+ * - because the communication failed or were canceled after startup. In this case, it's called from
+ * the function we are in, by the chunk:
* set = model->states.failed_action_set;
- * while ((synchro = xbt_swag_extract(set)))
+ * while ((synchro = extract(set)))
* SIMIX_simcall_post((smx_synchro_t) synchro->data);
* 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 swag does not depend on the user code's execution order.
+ * poped 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 = xbt_swag_extract(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 process_to_run do not depend on the order in which user processes were executed previously.
+ * 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
+ * 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
- * But this decision may not have been motivated by a situation that were different because the simulation is not reproducible.
+ * 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 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 handled
- * (like "according to the PID of issuer"), but it's not mandatory (order is fixed already even if unfriendly).
+ * We could sort the process_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.
*/
- xbt_dynar_foreach(simix_global->process_that_ran, iter, process) {
+ for (smx_actor_t const& process : simix_global->process_that_ran) {
if (process->simcall.call != SIMCALL_NONE) {
SIMIX_simcall_handle(&process->simcall, 0);
}
}
- /* Wake up all processes waiting for a Surf action to finish */
- xbt_dynar_foreach(all_existing_models, iter, model) {
- XBT_DEBUG("Handling process whose action failed");
- while ((action = surf_model_extract_failed_action_set(model))) {
- XBT_DEBUG(" Handling Action %p",action);
- SIMIX_simcall_exit((smx_synchro_t) action->getData());
- }
- XBT_DEBUG("Handling process whose action terminated normally");
- while ((action = surf_model_extract_done_action_set(model))) {
- XBT_DEBUG(" Handling Action %p",action);
- if (action->getData() == NULL)
- XBT_DEBUG("probably vcpu's action %p, skip", action);
- else
- SIMIX_simcall_exit((smx_synchro_t) action->getData());
+
+ SIMIX_execute_tasks();
+ do {
+ SIMIX_wake_processes();
+ } while (SIMIX_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->getCname());
+ SIMIX_process_kill(dmon, simix_global->maestro_process);
}
- }
}
time = SIMIX_timer_next();
- if (time != -1.0 || xbt_swag_size(simix_global->process_list) != 0) {
+ if (time > -1.0 || not simix_global->process_list.empty()) {
XBT_DEBUG("Calling surf_solve");
time = surf_solve(time);
XBT_DEBUG("Moving time ahead : %g", time);
}
+
/* Notify all the hosts that have failed */
/* FIXME: iterate through the list of failed host and mark each of them */
/* as failed. On each host, signal all the running processes with host_fail */
- /* Handle any pending timer */
- while (xbt_heap_size(simix_timers) > 0 && SIMIX_get_clock() >= SIMIX_timer_next()) {
- //FIXME: make the timers being real callbacks
- // (i.e. provide dispatchers that read and expand the args)
- timer = (smx_timer_t) xbt_heap_pop(simix_timers);
- if (timer->func)
- timer->func(timer->args);
- xbt_free(timer);
- }
-
- /* Wake up all processes waiting for a Surf action to finish */
- xbt_dynar_foreach(all_existing_models, iter, model) {
- XBT_DEBUG("Handling process whose action failed");
- while ((action = surf_model_extract_failed_action_set(model))) {
- XBT_DEBUG(" Handling Action %p",action);
- SIMIX_simcall_exit((smx_synchro_t) action->getData());
- }
- XBT_DEBUG("Handling process whose action terminated normally");
- while ((action = surf_model_extract_done_action_set(model))) {
- XBT_DEBUG(" Handling Action %p",action);
- if (action->getData() == NULL)
- XBT_DEBUG("probably vcpu's action %p, skip", action);
- else
- SIMIX_simcall_exit((smx_synchro_t) action->getData());
- }
- }
+ // Execute timers and tasks until there isn't anything to be done:
+ bool again = false;
+ do {
+ again = SIMIX_execute_timers();
+ if (SIMIX_execute_tasks())
+ again = true;
+ SIMIX_wake_processes();
+ } while (again);
/* Autorestart all process */
- char *hostname = NULL;
- xbt_dynar_foreach(host_that_restart,iter,hostname) {
- XBT_INFO("Restart processes on host: %s",hostname);
- SIMIX_host_autorestart(sg_host_by_name(hostname));
+ for (auto const& host : host_that_restart) {
+ XBT_INFO("Restart processes on host %s", host->getCname());
+ SIMIX_host_autorestart(host);
}
- xbt_dynar_reset(host_that_restart);
+ host_that_restart.clear();
/* Clean processes to destroy */
SIMIX_process_empty_trash();
+ XBT_DEBUG("### time %f, #processes %zu, #to_run %zu", time, simix_global->process_list.size(),
+ simix_global->process_to_run.size());
- XBT_DEBUG("### time %f, empty %d", time, xbt_dynar_is_empty(simix_global->process_to_run));
+ if (simix_global->process_to_run.empty() && not simix_global->process_list.empty())
+ simgrid::simix::onDeadlock();
- } while (time != -1.0 || !xbt_dynar_is_empty(simix_global->process_to_run));
+ } while (time > -1.0 || not simix_global->process_to_run.empty());
- if (xbt_swag_size(simix_global->process_list) != 0) {
+ if (not simix_global->process_list.empty()) {
- TRACE_end();
+ TRACE_end();
XBT_CRITICAL("Oops ! Deadlock or code not perfectly clean.");
SIMIX_display_process_status();
+ simgrid::s4u::onDeadlock();
xbt_abort();
}
+ simgrid::s4u::onSimulationEnd();
}
/**
*
* Set the date to execute the function on the surf.
* \param date Date to execute function
- * \param function Function to be executed
+ * \param callback Function to be executed
* \param arg Parameters of the function
*
*/
-smx_timer_t SIMIX_timer_set(double date, void (*function)(void*), void *arg)
+smx_timer_t SIMIX_timer_set(double date, void (*callback)(void*), void *arg)
{
- smx_timer_t timer = xbt_new0(s_smx_timer_t, 1);
+ smx_timer_t timer = new s_smx_timer_t(date, simgrid::xbt::makeTask([callback, arg]() { callback(arg); }));
+ timer->handle_ = simix_timers.emplace(std::make_pair(date, timer));
+ return timer;
+}
- timer->date = date;
- timer->func = function;
- timer->args = arg;
- xbt_heap_push(simix_timers, timer, date);
+smx_timer_t SIMIX_timer_set(double date, simgrid::xbt::Task<void()> callback)
+{
+ 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;
}
+
/** @brief cancels a timer that was added earlier */
void SIMIX_timer_remove(smx_timer_t timer) {
- xbt_heap_rm_elm(simix_timers, timer, timer->date);
+ simix_timers.erase(timer->handle_);
+ delete timer;
}
-/** @brief Returns the date at which the timer will trigger (or 0 if NULL timer) */
+/** @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->date:0;
+ return timer ? timer->getDate() : 0;
}
/**
* to call SIMIX_process_create().
* \param function create process function
*/
-void SIMIX_function_register_process_create(smx_creation_func_t
- 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().
+ * 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)
+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.
+ * 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)
+void SIMIX_function_register_process_cleanup(void_pfn_smxprocess_t function)
{
simix_global->cleanup_process_function = function;
}
-void SIMIX_display_process_status(void)
+void SIMIX_display_process_status()
{
- if (simix_global->process_list == NULL) {
- return;
- }
-
- smx_process_t process = NULL;
- int nbprocess = xbt_swag_size(simix_global->process_list);
+ int nbprocess = simix_global->process_list.size();
XBT_INFO("%d processes are still running, waiting for something.", nbprocess);
/* List the process and their state */
- XBT_INFO
- ("Legend of the following listing: \"Process <pid> (<name>@<host>): <status>\"");
- xbt_swag_foreach(process, simix_global->process_list) {
+ 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;
if (process->waiting_synchro) {
const char* synchro_description = "unknown";
- if (dynamic_cast<simgrid::simix::Exec*>(process->waiting_synchro) != nullptr)
+ if (boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(process->waiting_synchro) != nullptr)
synchro_description = "execution";
- if (dynamic_cast<simgrid::simix::Comm*>(process->waiting_synchro) != nullptr)
+ if (boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(process->waiting_synchro) != nullptr)
synchro_description = "communication";
- if (dynamic_cast<simgrid::simix::Sleep*>(process->waiting_synchro) != nullptr)
+ if (boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(process->waiting_synchro) != nullptr)
synchro_description = "sleeping";
- if (dynamic_cast<simgrid::simix::Raw*>(process->waiting_synchro) != nullptr)
+ if (boost::dynamic_pointer_cast<simgrid::kernel::activity::RawImpl>(process->waiting_synchro) != nullptr)
synchro_description = "synchronization";
- if (dynamic_cast<simgrid::simix::Io*>(process->waiting_synchro) != nullptr)
+ if (boost::dynamic_pointer_cast<simgrid::kernel::activity::IoImpl>(process->waiting_synchro) != nullptr)
synchro_description = "I/O";
-
- /*
- switch (process->waiting_synchro->type) {
- case SIMIX_SYNC_PARALLEL_EXECUTE:
- synchro_description = "parallel execution";
- break;
-
- case SIMIX_SYNC_JOIN:
- synchro_description = "joining";
- break;
-*/
-
- XBT_INFO("Process %lu (%s@%s): waiting for %s synchro %p (%s) in state %d to finish",
- process->pid, process->name, sg_host_get_name(process->host),
- synchro_description, process->waiting_synchro,
- process->waiting_synchro->name, (int)process->waiting_synchro->state);
+ XBT_INFO("Process %lu (%s@%s): waiting for %s synchro %p (%s) in state %d to finish", process->pid,
+ process->getCname(), process->host->getCname(), synchro_description, process->waiting_synchro.get(),
+ process->waiting_synchro->name.c_str(), (int)process->waiting_synchro->state);
}
else {
- XBT_INFO("Process %lu (%s@%s)", process->pid, process->name, sg_host_get_name(process->host));
+ XBT_INFO("Process %lu (%s@%s)", process->pid, process->getCname(), process->host->getCname());
}
}
}
-xbt_dict_t simcall_HANDLER_asr_get_properties(smx_simcall_t simcall, const char *name){
- return SIMIX_asr_get_properties(name);
-}
-xbt_dict_t SIMIX_asr_get_properties(const char *name)
-{
- return (xbt_dict_t) xbt_lib_get_or_null(as_router_lib, name, ROUTING_PROP_ASR_LEVEL);
-}
-
int SIMIX_is_maestro()
{
- return simix_global==NULL /*SimDag*/|| SIMIX_process_self() == simix_global->maestro_process;
+ smx_actor_t self = SIMIX_process_self();
+ return simix_global == nullptr /*SimDag*/ || self == nullptr || self == simix_global->maestro_process;
}
