+++ /dev/null
-/* 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 "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 <array>
-
-XBT_LOG_NEW_CATEGORY(sd, "Logging specific to SimDag");
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sd_kernel, sd, "Logging specific to SimDag (kernel)");
-
-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
- */
-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
- *
- * 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()
- */
-void SD_init_nocheck(int* argc, char** argv)
-{
- xbt_assert(sd_global == nullptr, "SD_init() already called");
-
- sd_global = std::make_unique<simgrid::sd::Global>(argc, argv);
-
- 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
- sd_global->engine_->shutdown();
- });
-}
-
-/** @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")
- */
-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
- *
- * 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
- *
- * The XML file follows this DTD:
- *
- * @include simgrid.dtd
- *
- * Here is a small example of such a platform:
- *
- * @include small_platform.xml
- */
-void SD_create_environment(const char* platform_file)
-{
- sd_global->engine_->load_platform(platform_file);
-
- 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...");
- sd_global->engine_->get_impl()->presolve(); /* Takes traces into account */
-}
-
-/**
- * @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
- * 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
- * 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()
- */
-void SD_simulate(double how_long)
-{
- simgrid::sd::simulate(how_long);
-}
-
-void SD_simulate_with_update(double how_long, xbt_dynar_t changed_tasks_dynar)
-{
- 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);
-}
