-/* Copyright (c) 2006-2019. 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/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)");
-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>();
-}
+std::unique_ptr<simgrid::sd::Global> sd_global = nullptr;
-Global::~Global(){
- delete initial_tasks;
- delete runnable_tasks;
- delete completed_tasks;
- delete return_set;
-}
+namespace simgrid {
+namespace sd {
-std::set<SD_task_t>* simulate(double how_long){
+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();
+ sd_global->return_set.clear();
/* explore the runnable tasks */
- while (not sd_global->runnable_tasks->empty())
- SD_task_run(*(sd_global->runnable_tasks->begin()));
+ while (not sd_global->runnable_tasks.empty())
+ (*(sd_global->runnable_tasks.begin()))->run();
double elapsed_time = 0.0;
- double total_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);
+ 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 : all_existing_models) {
- simgrid::kernel::resource::Action* action = model->extract_done_action();
+ for (auto const& model : engine->get_all_models()) {
+ const 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);
+ 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 */
- if (sd_global->return_set->find(task) == sd_global->return_set->end())
- sd_global->return_set->insert(task);
+ sd_global->return_set.emplace(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();
+ 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) {
- 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);
+ 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", SD_task_get_name(t), __get_state_name(SD_task_get_state(t)));
+ 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", surf_get_clock());
+ 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;
-}
-}
+ 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 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();
+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))));
}
/**
* @param argv argument list
* @see SD_create_environment(), SD_exit()
*/
-void SD_init_nocheck(int *argc, char **argv)
+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);
+ 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>("clean-atexit"))
- atexit(SD_exit);
- if (_sg_cfg_exit_asap) {
- exit(0);
- }
+ 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
*
* 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()");
+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);
}
*
* @include small_platform.xml
*/
-void SD_create_environment(const char *platform_file)
+void SD_create_environment(const char* platform_file)
{
- simgrid::s4u::Engine::get_instance()->load_platform(platform_file);
+ sd_global->engine_->load_platform(platform_file);
- XBT_DEBUG("Host number: %zu, link number: %d", sg_host_count(), sg_link_count());
+ 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 */
}
/**
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);
+ 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);
}
-
-/** @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;
-}
