-/* Copyright (c) 2006-2016. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2006-2021. 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 "simgrid/sg_config.h"
-#include "simgrid/host.h"
-#include "src/simdag/simdag_private.h"
+#include "simdag_private.hpp"
+#include "simgrid/kernel/resource/Action.hpp"
+#include "simgrid/kernel/resource/Model.hpp"
+#include "simgrid/s4u/Engine.hpp"
+#include "simgrid/sg_config.hpp"
+#include "src/kernel/EngineImpl.hpp"
#include "src/surf/surf_interface.hpp"
-#include "simgrid/s4u/engine.hpp"
+
+#include <array>
XBT_LOG_NEW_CATEGORY(sd, "Logging specific to SimDag");
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sd_kernel, sd, "Logging specific to SimDag (kernel)");
-SD_global_t sd_global = nullptr;
+std::unique_ptr<simgrid::sd::Global> sd_global = nullptr;
+
+namespace simgrid {
+namespace sd {
+
+std::set<Task*>* simulate(double how_long)
+{
+ XBT_VERB("Run simulation for %f seconds", how_long);
+
+ auto engine = sd_global->engine_->get_impl();
+ sd_global->watch_point_reached = false;
+ sd_global->return_set.clear();
+
+ /* explore the runnable tasks */
+ while (not sd_global->runnable_tasks.empty())
+ (*(sd_global->runnable_tasks.begin()))->run();
+
+ double elapsed_time = 0.0;
+ double total_time = 0.0;
+ /* main loop */
+ while (elapsed_time >= 0 && (how_long < 0 || 0.00001 < (how_long - total_time)) &&
+ not sd_global->watch_point_reached) {
+ XBT_DEBUG("Total time: %f", total_time);
+
+ elapsed_time = engine->solve(how_long > 0 ? simgrid_get_clock() + how_long - total_time : -1.0);
+ XBT_DEBUG("solve() returns %f", elapsed_time);
+ if (elapsed_time > 0.0)
+ total_time += elapsed_time;
+
+ /* let's see which tasks are done */
+ for (auto const& model : engine->get_all_models()) {
+ const kernel::resource::Action* action = model->extract_done_action();
+ while (action != nullptr && action->get_data() != nullptr) {
+ auto* task = static_cast<Task*>(action->get_data());
+ XBT_VERB("Task '%s' done", task->get_cname());
+ task->set_state(SD_DONE);
+
+ /* the state has changed. Add it only if it's the first change */
+ sd_global->return_set.emplace(task);
+
+ /* remove the dependencies after this task */
+ for (auto const& succ : task->get_successors())
+ succ->released_by(task);
+
+ for (auto const& output : task->get_outputs())
+ output->produced_by(task);
+ task->clear_successors();
+ action = model->extract_done_action();
+ }
+
+ /* let's see which tasks have just failed */
+ action = model->extract_failed_action();
+ while (action != nullptr) {
+ auto* task = static_cast<Task*>(action->get_data());
+ XBT_VERB("Task '%s' failed", task->get_cname());
+ task->set_state(SD_FAILED);
+ sd_global->return_set.insert(task);
+ action = model->extract_failed_action();
+ }
+ }
+ }
+
+ if (not sd_global->watch_point_reached && how_long < 0 && not sd_global->initial_tasks.empty()) {
+ XBT_WARN("Simulation is finished but %zu tasks are still not done", sd_global->initial_tasks.size());
+ for (auto const& t : sd_global->initial_tasks)
+ XBT_WARN("%s is in %s state", t->get_cname(), __get_state_name(t->get_state()));
+ }
+
+ XBT_DEBUG("elapsed_time = %f, total_time = %f, watch_point_reached = %d", elapsed_time, total_time,
+ sd_global->watch_point_reached);
+ XBT_DEBUG("current time = %f", simgrid_get_clock());
+
+ return &sd_global->return_set;
+}
+} // namespace sd
+} // namespace simgrid
/**
- * \brief helper for pretty printing of task state
- * \param state the state of a task
- * \return the equivalent as a readable string
+ * @brief helper for pretty printing of task state
+ * @param state the state of a task
+ * @return the equivalent as a readable string
*/
-const char *__get_state_name(e_SD_task_state_t state){
- std::string state_names[7] = { "not scheduled", "schedulable", "scheduled", "runnable","running", "done", "failed" };
- return state_names[(int)log2(state)].data();
+const char* __get_state_name(e_SD_task_state_t state)
+{
+ static constexpr std::array<const char*, 7> state_names{
+ {"not scheduled", "schedulable", "scheduled", "runnable", "running", "done", "failed"}};
+ return state_names.at(static_cast<int>(log2(static_cast<double>(state))));
}
/**
- * \brief Initializes SD internal data
+ * @brief Initializes SD internal data
*
* This function must be called before any other SD function. Then you should call SD_create_environment().
*
- * \param argc argument number
- * \param argv argument list
- * \see SD_create_environment(), SD_exit()
+ * @param argc argument number
+ * @param argv argument list
+ * @see SD_create_environment(), SD_exit()
*/
-void SD_init(int *argc, char **argv)
+void SD_init_nocheck(int* argc, char** argv)
{
xbt_assert(sd_global == nullptr, "SD_init() already called");
- sd_global = xbt_new(s_SD_global_t, 1);
- sd_global->watch_point_reached = false;
- sd_global->initial_tasks = new std::set<SD_task_t>();
- sd_global->runnable_tasks = new std::set<SD_task_t>();
- sd_global->completed_tasks = new std::set<SD_task_t>();
- sd_global->return_set = xbt_dynar_new(sizeof(SD_task_t), nullptr);
-
- surf_init(argc, argv);
-
- xbt_cfg_setdefault_string("host/model", "ptask_L07");
+ sd_global = std::make_unique<simgrid::sd::Global>(argc, argv);
-#if HAVE_JEDULE
- jedule_sd_init();
+ simgrid::config::set_default<std::string>("host/model", "ptask_L07");
+ if (simgrid::config::get_value<bool>("debug/clean-atexit"))
+ atexit([]() {
+#if SIMGRID_HAVE_JEDULE
+ jedule_sd_exit();
#endif
-
- if (_sg_cfg_exit_asap) {
- SD_exit();
- exit(0);
- }
+ sd_global->engine_->shutdown();
+ });
}
-/** \brief set a configuration variable
+/** @brief set a configuration variable
*
* Do --help on any simgrid binary to see the list of currently existing configuration variables, and
* see Section @ref options.
*
- * Example: SD_config("host/model","default");
+ * Example: SD_config("host/model","default")
*/
-void SD_config(const char *key, const char *value){
- xbt_assert(sd_global,"ERROR: Please call SD_init() before using SD_config()");
- xbt_cfg_set_as_string(key, value);
+void SD_config(const char* key, const char* value)
+{
+ xbt_assert(sd_global, "ERROR: Please call SD_init() before using SD_config()");
+ simgrid::config::set_as_string(key, value);
}
/**
- * \brief Creates the environment
+ * @brief Creates the environment
*
- * The environment (i.e. the \ref SD_host_api "hosts" and the \ref SD_link_api "links") is created with
+ * The environment (i.e. the @ref SD_host_api "hosts" and the @ref SD_link_api "links") is created with
* the data stored in the given XML platform file.
*
- * \param platform_file name of an XML file describing the environment to create
- * \see SD_host_api, SD_link_api
+ * @param platform_file name of an XML file describing the environment to create
+ * @see SD_host_api, SD_link_api
*
* The XML file follows this DTD:
*
- * \include simgrid.dtd
+ * @include simgrid.dtd
*
* Here is a small example of such a platform:
*
- * \include small_platform.xml
+ * @include small_platform.xml
*/
-void SD_create_environment(const char *platform_file)
+void SD_create_environment(const char* platform_file)
{
- simgrid::s4u::Engine::instance()->loadPlatform(platform_file);
+ sd_global->engine_->load_platform(platform_file);
- XBT_DEBUG("Workstation number: %zu, link number: %d", sg_host_count(), sg_link_count());
-#if HAVE_JEDULE
- jedule_setup_platform();
+ XBT_DEBUG("Host number: %zu, link number: %zu", sg_host_count(), sg_link_count());
+#if SIMGRID_HAVE_JEDULE
+ jedule_sd_init();
#endif
XBT_VERB("Starting simulation...");
- surf_presolve(); /* Takes traces into account */
+ sd_global->engine_->get_impl()->presolve(); /* Takes traces into account */
}
/**
- * \brief Launches the simulation.
+ * @brief Launches the simulation.
*
- * The function will execute the \ref SD_RUNNABLE runnable tasks.
- * If \a how_long is positive, then the simulation will be stopped either when time reaches \a how_long or when a watch
+ * The function will execute the @ref SD_RUNNABLE runnable tasks.
+ * If @a how_long is positive, then the simulation will be stopped either when time reaches @a how_long or when a watch
* point is reached.
- * A non-positive value for \a how_long means no time limit, in which case the simulation will be stopped either when a
+ * A non-positive value for @a how_long means no time limit, in which case the simulation will be stopped either when a
* watch point is reached or when no more task can be executed.
* Then you can call SD_simulate() again.
*
- * \param how_long maximum duration of the simulation (a negative value means no time limit)
- * \return a dynar of \ref SD_task_t whose state has changed.
- * \see SD_task_schedule(), SD_task_watch()
+ * @param how_long maximum duration of the simulation (a negative value means no time limit)
+ * @return a dynar of @ref SD_task_t whose state has changed.
+ * @see SD_task_schedule(), SD_task_watch()
*/
-
-xbt_dynar_t SD_simulate(double how_long) {
- XBT_VERB("Run simulation for %f seconds", how_long);
-
- sd_global->watch_point_reached = false;
- xbt_dynar_reset(sd_global->return_set);
-
- /* explore the runnable tasks */
- while(!sd_global->runnable_tasks->empty())
- SD_task_run(*(sd_global->runnable_tasks->begin()));
-
- double elapsed_time = 0.0;
- double total_time = 0.0;
- /* main loop */
- while (elapsed_time >= 0 && (how_long < 0 || 0.00001 < (how_long -total_time)) && !sd_global->watch_point_reached) {
- surf_model_t model = nullptr;
-
- XBT_DEBUG("Total time: %f", total_time);
-
- elapsed_time = surf_solve(how_long > 0 ? surf_get_clock() + how_long - total_time: -1.0);
- XBT_DEBUG("surf_solve() returns %f", elapsed_time);
- if (elapsed_time > 0.0)
- total_time += elapsed_time;
-
- /* let's see which tasks are done */
- unsigned int iter;
- xbt_dynar_foreach(all_existing_models, iter, model) {
- surf_action_t action = surf_model_extract_done_action_set(model);
- while (action != nullptr) {
- SD_task_t task = static_cast<SD_task_t>(action->getData());
- XBT_VERB("Task '%s' done", SD_task_get_name(task));
- SD_task_set_state(task, SD_DONE);
-
- /* the state has changed. Add it only if it's the first change */
- if (xbt_dynar_member(sd_global->return_set, &task) == 0)
- xbt_dynar_push(sd_global->return_set, &task);
-
- /* remove the dependencies after this task */
- for (auto succ : *task->successors) {
- succ->predecessors->erase(task);
- succ->inputs->erase(task);
- XBT_DEBUG("Release dependency on %s: %zu remain(s). Becomes schedulable if %zu=0", SD_task_get_name(succ),
- succ->predecessors->size()+succ->inputs->size(), succ->predecessors->size());
-
- if (SD_task_get_state(succ) == SD_NOT_SCHEDULED && succ->predecessors->empty())
- SD_task_set_state(succ, SD_SCHEDULABLE);
-
- if (SD_task_get_state(succ) == SD_SCHEDULED && succ->predecessors->empty() && succ->inputs->empty())
- SD_task_set_state(succ, SD_RUNNABLE);
-
- if (SD_task_get_state(succ) == SD_RUNNABLE && !sd_global->watch_point_reached)
- SD_task_run(succ);
- }
- task->successors->clear();
-
- for (auto output : *task->outputs) {
- output->start_time = task->finish_time;
- output->predecessors->erase(task);
- if (SD_task_get_state(output) == SD_SCHEDULED)
- SD_task_set_state(output, SD_RUNNABLE);
- else
- SD_task_set_state(output, SD_SCHEDULABLE);
-
- SD_task_t comm_dst = *(output->successors->begin());
- if (SD_task_get_state(comm_dst) == SD_NOT_SCHEDULED && comm_dst->predecessors->empty()){
- XBT_DEBUG("%s is a transfer, %s may be ready now if %zu=0",
- SD_task_get_name(output), SD_task_get_name(comm_dst), comm_dst->predecessors->size());
- SD_task_set_state(comm_dst, SD_SCHEDULABLE);
- }
- if (SD_task_get_state(output) == SD_RUNNABLE && !sd_global->watch_point_reached)
- SD_task_run(output);
- }
- task->outputs->clear();
- action = surf_model_extract_done_action_set(model);
- }
-
- /* let's see which tasks have just failed */
- action = surf_model_extract_failed_action_set(model);
- while (action != nullptr) {
- SD_task_t task = static_cast<SD_task_t>(action->getData());
- XBT_VERB("Task '%s' failed", SD_task_get_name(task));
- SD_task_set_state(task, SD_FAILED);
- xbt_dynar_push(sd_global->return_set, &task);
- action = surf_model_extract_failed_action_set(model);
- }
- }
- }
-
- if (!sd_global->watch_point_reached && how_long < 0 && !sd_global->initial_tasks->empty()) {
- XBT_WARN("Simulation is finished but %zu tasks are still not done", sd_global->initial_tasks->size());
- for (auto t : *sd_global->initial_tasks)
- XBT_WARN("%s is in %s state", SD_task_get_name(t), __get_state_name(SD_task_get_state(t)));
- }
-
- XBT_DEBUG("elapsed_time = %f, total_time = %f, watch_point_reached = %d",
- elapsed_time, total_time, sd_global->watch_point_reached);
- XBT_DEBUG("current time = %f", surf_get_clock());
-
- return sd_global->return_set;
-}
-
-/** @brief Returns the current clock, in seconds */
-double SD_get_clock() {
- return surf_get_clock();
+void SD_simulate(double how_long)
+{
+ simgrid::sd::simulate(how_long);
}
-/**
- * \brief Destroys all SD internal data
- * This function should be called when the simulation is over. Don't forget to destroy too.
- * \see SD_init(), SD_task_destroy()
- */
-void SD_exit()
+void SD_simulate_with_update(double how_long, xbt_dynar_t changed_tasks_dynar)
{
-#if HAVE_JEDULE
- jedule_sd_cleanup();
- jedule_sd_exit();
-#endif
- delete sd_global->initial_tasks;
- delete sd_global->runnable_tasks;
- delete sd_global->completed_tasks;
- xbt_dynar_free_container(&(sd_global->return_set));
- xbt_free(sd_global);
- sd_global = nullptr;
+ const std::set<SD_task_t>* changed_tasks = simgrid::sd::simulate(how_long);
+ for (auto const& task : *changed_tasks)
+ xbt_dynar_push(changed_tasks_dynar, &task);
}
