X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/685040f3a8779f848f54d8bc8f8d1d1bf003a622..HEAD:/src/simdag/sd_global.cpp diff --git a/src/simdag/sd_global.cpp b/src/simdag/sd_global.cpp deleted file mode 100644 index 09236e02a9..0000000000 --- a/src/simdag/sd_global.cpp +++ /dev/null @@ -1,255 +0,0 @@ -/* 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(); - runnable_tasks = new std::set(); - completed_tasks = new std::set(); - return_set = new std::set(); -} - -Global::~Global(){ - delete initial_tasks; - delete runnable_tasks; - delete completed_tasks; - delete return_set; -} - -std::set* 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(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(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(log2(static_cast(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("host/model", "ptask_L07"); - if (simgrid::config::get_value("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 *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; -}