+++ /dev/null
-/* Copyright (c) 2006-2018. 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 "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/surf/surf_interface.hpp"
-
-XBT_LOG_NEW_CATEGORY(sd, "Logging specific to SimDag");
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sd_kernel, sd, "Logging specific to SimDag (kernel)");
-
-simgrid::sd::Global *sd_global = nullptr;
-
-namespace simgrid{
-namespace sd{
-Global::Global(){
- watch_point_reached = false;
- initial_tasks = new std::set<SD_task_t>();
- runnable_tasks = new std::set<SD_task_t>();
- completed_tasks = new std::set<SD_task_t>();
- return_set = new std::set<SD_task_t>();
-}
-
-Global::~Global(){
- delete initial_tasks;
- delete runnable_tasks;
- delete completed_tasks;
- delete return_set;
-}
-
-std::set<SD_task_t>* simulate(double how_long){
- XBT_VERB("Run simulation for %f seconds", how_long);
-
- sd_global->watch_point_reached = false;
- sd_global->return_set->clear();
-
- /* explore the runnable tasks */
- while (not 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)) &&
- not sd_global->watch_point_reached) {
-
- 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 */
- for (auto const& model : all_existing_models) {
- simgrid::kernel::resource::Action* action = model->extract_done_action();
- while (action != nullptr && action->get_data() != nullptr) {
- SD_task_t task = static_cast<SD_task_t>(action->get_data());
- 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 (sd_global->return_set->find(task) == sd_global->return_set->end())
- sd_global->return_set->insert(task);
-
- /* remove the dependencies after this task */
- for (auto const& 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 && not sd_global->watch_point_reached)
- SD_task_run(succ);
- }
- task->successors->clear();
-
- for (auto const& 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 && not sd_global->watch_point_reached)
- SD_task_run(output);
- }
- task->outputs->clear();
- action = model->extract_done_action();
- }
-
- /* let's see which tasks have just failed */
- action = model->extract_failed_action();
- while (action != nullptr) {
- SD_task_t task = static_cast<SD_task_t>(action->get_data());
- XBT_VERB("Task '%s' failed", SD_task_get_name(task));
- SD_task_set_state(task, 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", 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 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 std::string state_names[7] =
- { "not scheduled", "schedulable", "scheduled", "runnable","running", "done", "failed" };
- return state_names[static_cast<int>(log2(static_cast<double>(state)))].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()
- */
-void SD_init_nocheck(int *argc, char **argv)
-{
- xbt_assert(sd_global == nullptr, "SD_init() already called");
-
- sd_global = new simgrid::sd::Global();
-
- surf_init(argc, argv);
-
- simgrid::config::set_default<std::string>("host/model", "ptask_L07");
- if (simgrid::config::get_value<bool>("clean-atexit"))
- atexit(SD_exit);
- if (_sg_cfg_exit_asap) {
- exit(0);
- }
-}
-
-/** \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)
-{
- simgrid::s4u::Engine::get_instance()->load_platform(platform_file);
-
- XBT_DEBUG("Host number: %zu, link number: %d", sg_host_count(), sg_link_count());
-#if SIMGRID_HAVE_JEDULE
- jedule_sd_init();
-#endif
- XBT_VERB("Starting simulation...");
- surf_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)
-{
- 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);
-}
-
-/** @brief Returns the current clock, in seconds */
-double SD_get_clock() {
- return surf_get_clock();
-}
-
-/**
- * \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()
-{
-#if SIMGRID_HAVE_JEDULE
- jedule_sd_exit();
-#endif
- delete sd_global;
-}
