-#include "simdag/simdag.h"
#include "private.h"
-#include "xbt/asserts.h"
#include "xbt/sysdep.h"
+#include "xbt/dynar.h"
#include "surf/surf.h"
+#include "xbt/ex.h"
+#include "xbt/log.h"
+#include "xbt/str.h"
+#include "xbt/config.h"
-#define CHECK_INIT_DONE() xbt_assert0(init_done, "SG_init not called yet")
+XBT_LOG_NEW_CATEGORY(sd,"Logging specific to SimDag");
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sd_kernel,sd,
+ "Logging specific to SimDag (kernel)");
-SG_global_t sg_global = NULL;
+SD_global_t sd_global = NULL;
-static int init_done = 0;
+/* $Id$ */
-/* Initialises SG internal data. This function should be called before any other SG function.
+/* Copyright (c) 2007 Arnaud Legrand.
+ 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. */
+
+static int _sd_init_status = 0; /* 0: beginning of time;
+ 1: pre-inited (cfg_set created);
+ 2: inited (running) */
+static xbt_cfg_t _sd_cfg_set = NULL;
+
+/* callback of the workstation_model variable */
+static void _sd_cfg_cb__workstation_model(const char *name, int pos)
+{
+ char *val;
+
+ xbt_assert0(_sd_init_status < 2,
+ "Cannot change the model after the initialization");
+
+ val = xbt_cfg_get_string(_sd_cfg_set, name);
+ find_model_description(surf_workstation_model_description,
+ surf_workstation_model_description_size,
+ val);
+}
+
+/* callback of the cpu_model variable */
+static void _sd_cfg_cb__cpu_model(const char *name, int pos)
+{
+ char *val;
+
+ xbt_assert0(_sd_init_status < 2,
+ "Cannot change the model after the initialization");
+
+ val = xbt_cfg_get_string(_sd_cfg_set, name);
+ find_model_description(surf_cpu_model_description,
+ surf_cpu_model_description_size, val);
+}
+
+/* callback of the workstation_model variable */
+static void _sd_cfg_cb__network_model(const char *name, int pos)
+{
+ char *val;
+
+ xbt_assert0(_sd_init_status < 2,
+ "Cannot change the model after the initialization");
+
+ val = xbt_cfg_get_string(_sd_cfg_set, name);
+ find_model_description(surf_network_model_description,
+ surf_network_model_description_size, val);
+}
+
+XBT_LOG_EXTERNAL_CATEGORY(sd_kernel);
+XBT_LOG_EXTERNAL_CATEGORY(sd_task);
+XBT_LOG_EXTERNAL_CATEGORY(sd_workstation);
+
+/* create the config set and register what should be */
+static void sd_config_init(void)
+{
+
+ if (_sd_init_status)
+ return; /* Already inited, nothing to do */
+
+ /* Connect our log channels: that must be done manually under windows */
+ XBT_LOG_CONNECT(sd_kernel, sd);
+ XBT_LOG_CONNECT(sd_task, sd);
+ XBT_LOG_CONNECT(sd_workstation, sd);
+
+ _sd_init_status = 1;
+ _sd_cfg_set = xbt_cfg_new();
+
+ xbt_cfg_register(_sd_cfg_set,
+ "workstation_model", xbt_cfgelm_string, 1, 1,
+ &_sd_cfg_cb__workstation_model, NULL);
+
+ xbt_cfg_register(_sd_cfg_set,
+ "cpu_model", xbt_cfgelm_string, 1, 1,
+ &_sd_cfg_cb__cpu_model, NULL);
+ xbt_cfg_register(_sd_cfg_set,
+ "network_model", xbt_cfgelm_string, 1, 1,
+ &_sd_cfg_cb__network_model, NULL);
+
+ xbt_cfg_set_string(_sd_cfg_set, "workstation_model", "ptask_L07");
+}
+
+static void sd_config_finalize(void)
+{
+
+ if (!_sd_init_status)
+ return; /* Not initialized yet. Nothing to do */
+
+ xbt_cfg_free(&_sd_cfg_set);
+ _sd_init_status = 0;
+}
+
+static void sd_config(const char *name, va_list pa)
+{
+ if (!_sd_init_status) {
+ sd_config_init();
+ }
+ xbt_cfg_set_vargs(_sd_cfg_set, name, pa);
+}
+
+
+static void __sd_config_helper(const char *name, ...)
+{
+ va_list pa;
+ va_start(pa, name);
+
+ sd_config(name, pa);
+
+ va_end(pa);
+}
+
+static void sd_cfg_control_set(const char *control_string)
+{
+ /* To split the string in commands, and the cursors */
+ xbt_dynar_t set_strings;
+ char *str;
+ unsigned int cpt;
+
+ if (!control_string)
+ return;
+ DEBUG1("Parse log settings '%s'", control_string);
+
+ /* split the string, and remove empty entries */
+ set_strings = xbt_str_split_quoted(control_string);
+
+ if (xbt_dynar_length(set_strings) == 0) { /* vicious user! */
+ xbt_dynar_free(&set_strings);
+ return;
+ }
+ /* Parse each entry and either use it right now (if the category was already
+ created), or store it for further use */
+ xbt_dynar_foreach(set_strings, cpt, str) {
+ char *control_string, *control_string_sav, *name, *value;
+
+
+ control_string = control_string_sav = strdup(str);
+ control_string += strspn(control_string, " ");
+ name = control_string;
+ control_string += strcspn(str, ":=");
+ value = control_string;
+ *value = 0;
+ value++;
+
+ xbt_assert1(strlen(name) != 0, "Invalid name for configuration: '%s'",
+ name);
+ xbt_assert1(strlen(value) != 0,
+ "Invalid value for configuration: '%s'", value);
+ INFO2("setting '%s' to '%s'", name, value);
+
+ __sd_config_helper(name, value);
+
+ free(control_string_sav);
+ }
+ xbt_dynar_free(&set_strings);
+}
+
+static void sd_cfg_init(int *argc, char **argv)
+{
+ int i, j;
+ char *opt;
+
+ for (i = 1; i < *argc; i++) {
+ if (!strncmp(argv[i], "--cfg=", strlen("--cfg="))) {
+ opt = strchr(argv[i], '=');
+ opt++;
+
+ sd_cfg_control_set(opt);
+ DEBUG1("Did apply '%s' as config setting", opt);
+ /*remove this from argv */
+
+ for (j = i + 1; j < *argc; j++) {
+ argv[j - 1] = argv[j];
+ }
+
+ argv[j - 1] = NULL;
+ (*argc)--;
+ i--; /* compensate effect of next loop incrementation */
+ }
+ }
+}
+
+/**
+ * \brief Initialises 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 SG_init(int *argc, char **argv) {
- xbt_assert0(!init_done, "SG_init already called");
+void SD_init(int *argc, char **argv) {
- sg_global = xbt_new0(s_SG_global_t, 1);
- sg_global->workstations = xbt_dict_new();
- sg_global->workstation_count = 0;
+ s_SD_task_t task;
+
+ xbt_assert0( !SD_INITIALISED() , "SD_init() already called");
+
+ sd_global = xbt_new(s_SD_global_t, 1);
+ sd_global->workstations = xbt_dict_new();
+ sd_global->workstation_count = 0;
+ sd_global->workstation_list = NULL;
+ sd_global->links = xbt_dict_new();
+ sd_global->link_count = 0;
+ sd_global->link_list = NULL;
+ sd_global->recyclable_route = NULL;
+ sd_global->watch_point_reached = 0;
+
+ sd_global->not_scheduled_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup));
+ sd_global->scheduled_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup));
+ sd_global->ready_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup));
+ sd_global->in_fifo_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup));
+ sd_global->running_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup));
+ sd_global->done_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup));
+ sd_global->failed_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup));
+ sd_global->task_number = 0;
surf_init(argc, argv);
+ sd_cfg_init(argc, argv);
+}
+
+/**
+ * \brief Reinits the application part of the simulation (experimental feature)
+ *
+ * This function allows you to run several simulations on the same platform
+ * by resetting the part describing the application.
+ *
+ * @warning: this function is still experimental and not perfect. For example,
+ * the simulation clock (and traces usage) is not reset. So, do not use it if
+ * you use traces in your simulation, and do not use absolute timing after using it.
+ * That being said, this function is still precious if you want to compare a bunch of
+ * heuristics on the same platforms.
+ */
+void SD_application_reinit(void) {
+
+ s_SD_task_t task;
+
+ if (SD_INITIALISED()) {
+ DEBUG0("Recreating the swags...");
+ xbt_swag_free(sd_global->not_scheduled_task_set);
+ xbt_swag_free(sd_global->scheduled_task_set);
+ xbt_swag_free(sd_global->ready_task_set);
+ xbt_swag_free(sd_global->in_fifo_task_set);
+ xbt_swag_free(sd_global->running_task_set);
+ xbt_swag_free(sd_global->done_task_set);
+ xbt_swag_free(sd_global->failed_task_set);
+
+ sd_global->not_scheduled_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup));
+ sd_global->scheduled_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup));
+ sd_global->ready_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup));
+ sd_global->in_fifo_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup));
+ sd_global->running_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup));
+ sd_global->done_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup));
+ sd_global->failed_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup));
+ sd_global->task_number = 0;
+ } else {
+ WARN0("SD_application_reinit called before initialization of SimDag");
+ /* we cannot use exceptions here because xbt is not running! */
+ }
- init_done = 1;
}
-/* Creates the environnement described in a xml file of a platform descriptions.
+/**
+ * \brief Creates the environment
+ *
+ * The environment (i.e. the \ref SD_workstation_management "workstations" and the
+ * \ref SD_link_management "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_workstation_management, SD_link_management
+ *
+ * The XML file follows this DTD:
+ *
+ * \include simgrid.dtd
+ *
+ * Here is a small example of such a platform:
+ *
+ * \include small_platform.xml
*/
-void SG_create_environment(const char *platform_file) {
+void SD_create_environment(const char *platform_file) {
xbt_dict_cursor_t cursor = NULL;
char *name = NULL;
- void *workstation = NULL;
+ void *surf_workstation = NULL;
+ void *surf_link = NULL;
+ char *workstation_model_name;
+ int workstation_id = -1;
+
+ SD_CHECK_INIT_DONE();
+
+ DEBUG0("SD_create_environment");
+
+ sd_config_init();
+ surf_timer_model_init(platform_file);
+
+ workstation_model_name =
+ xbt_cfg_get_string(_sd_cfg_set, "workstation_model");
- CHECK_INIT_DONE();
- surf_timer_resource_init(platform_file);
- surf_workstation_resource_init_KCCFLN05(platform_file); /* tell Surf to create the environnement */
+ DEBUG1("Model : %s", workstation_model_name);
+ workstation_id =
+ find_model_description(surf_workstation_model_description,
+ surf_workstation_model_description_size,
+ workstation_model_name);
+ if (!strcmp(workstation_model_name, "compound")) {
+ xbt_ex_t e;
+ char *network_model_name = NULL;
+ char *cpu_model_name = NULL;
+ int network_id = -1;
+ int cpu_id = -1;
- /* now let's create the SG wrappers */
- xbt_dict_foreach(workstation_set, cursor, name, workstation) {
- __SG_workstation_create(name, workstation, NULL);
+ TRY {
+ cpu_model_name = xbt_cfg_get_string(_sd_cfg_set, "cpu_model");
+ } CATCH(e) {
+ if (e.category == bound_error) {
+ xbt_assert0(0,
+ "Set a cpu model to use with the 'compound' workstation model");
+ xbt_ex_free(e);
+ } else {
+ RETHROW;
+ }
+ }
+
+ TRY {
+ network_model_name =
+ xbt_cfg_get_string(_sd_cfg_set, "network_model");
+ }
+ CATCH(e) {
+ if (e.category == bound_error) {
+ xbt_assert0(0,
+ "Set a network model to use with the 'compound' workstation model");
+ xbt_ex_free(e);
+ } else {
+ RETHROW;
+ }
+ }
+
+ network_id =
+ find_model_description(surf_network_model_description,
+ surf_network_model_description_size,
+ network_model_name);
+ cpu_id =
+ find_model_description(surf_cpu_model_description,
+ surf_cpu_model_description_size,
+ cpu_model_name);
+
+ surf_cpu_model_description[cpu_id].model_init(platform_file);
+ surf_network_model_description[network_id].model_init(platform_file);
+ }
+
+ DEBUG0("Call workstation_model_init");
+ surf_workstation_model_description[workstation_id].
+ model_init(platform_file);
+
+ parse_platform_file(platform_file);
+
+ _sd_init_status = 2;
+
+ /* now let's create the SD wrappers for workstations and links */
+ xbt_dict_foreach(workstation_set, cursor, name, surf_workstation) {
+ __SD_workstation_create(surf_workstation, NULL);
+ }
+
+ xbt_dict_foreach(link_set, cursor, name, surf_link) {
+ __SD_link_create(surf_link, NULL);
}
+
+ DEBUG2("Workstation number: %d, link number: %d", SD_workstation_get_number(), SD_link_get_number());
}
-/* Launches the simulation. Returns a NULL-terminated array of SG_task_t whose state has changed.
+/**
+ * \brief Launches the simulation.
+ *
+ * The function will execute the \ref SD_READY ready tasks.
+ * The simulation will be stopped when its time reaches \a how_long,
+ * 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 NULL-terminated array of \ref SD_task_t whose state has changed.
+ * \see SD_task_schedule(), SD_task_watch()
*/
-SG_task_t* SG_simulate(double how_long)
+SD_task_t* SD_simulate(double how_long)
{
- /* TODO */
+ double total_time = 0.0; /* we stop the simulation when total_time >= how_long */
+ double elapsed_time = 0.0;
+ SD_task_t task, task_safe, dst;
+ SD_dependency_t dependency;
+ surf_action_t action;
+ SD_task_t *changed_tasks = NULL;
+ int changed_task_number = 0;
+ int changed_task_capacity = sd_global->task_number + 1;
+ unsigned int iter;
+ static int first_time = 1;
- /* temporary test to access to the surf workstation structure */
- xbt_dict_cursor_t cursor = NULL;
- char *name = NULL;
- void *workstation = NULL;
- const char *surf_name;
- int speed;
-
- xbt_dict_foreach(workstation_set, cursor, name, workstation) {
- surf_name = surf_workstation_resource->common_public->get_resource_name(workstation);
- speed = surf_workstation_resource->extension_public->get_speed(workstation, 1.0);
- printf("Workstation name: %s, Surf name: %s, speed: %d\n", name, surf_name, speed);
+ SD_CHECK_INIT_DONE();
+
+ INFO0("Starting simulation...");
+
+ /* create the array that will be returned */
+ changed_tasks = xbt_new(SD_task_t, changed_task_capacity);
+ changed_tasks[0] = NULL;
+
+ if (first_time) {
+ surf_solve(); /* Takes traces into account. Returns 0.0 */
+ first_time = 0;
+ }
+
+ if(how_long>0) {
+ surf_timer_model->extension_public->set(surf_get_clock()+how_long,
+ NULL,NULL);
+ }
+ sd_global->watch_point_reached = 0;
+
+ /* explore the ready tasks */
+ xbt_swag_foreach_safe(task, task_safe, sd_global->ready_task_set) {
+ INFO1("Executing task '%s'", SD_task_get_name(task));
+ if ((task->state_changed = __SD_task_try_to_run(task))) {
+ changed_tasks[changed_task_number++] = task; /* replace NULL by the task */
+ /*
+ if (changed_task_number == changed_task_capacity) {
+ changed_task_capacity *= 2;
+ changed_tasks = xbt_realloc(changed_tasks, sizeof(SD_task_t) * changed_task_capacity);
+ }
+ */
+ changed_tasks[changed_task_number] = NULL;
+ }
+ }
+
+ /* main loop */
+ elapsed_time = 0.0;
+ while (elapsed_time >= 0.0 &&
+ (how_long < 0.0 || total_time < how_long) &&
+ !sd_global->watch_point_reached) {
+ surf_model_t model = NULL;
+ /* dumb variables */
+ void *fun = NULL;
+ void *arg = NULL;
+
+
+ DEBUG1("Total time: %f", total_time);
+
+ elapsed_time = surf_solve();
+ DEBUG1("surf_solve() returns %f", elapsed_time);
+ if (elapsed_time > 0.0)
+ total_time += elapsed_time;
+
+ /* let's see which tasks are done */
+ xbt_dynar_foreach(model_list, iter, model) {
+ while ((action = xbt_swag_extract(model->common_public->
+ states.done_action_set))) {
+ task = action->data;
+ INFO1("Task '%s' done", SD_task_get_name(task));
+ DEBUG0("Calling __SD_task_just_done");
+ __SD_task_just_done(task);
+ DEBUG1("__SD_task_just_done called on task '%s'", SD_task_get_name(task));
+
+ /* the state has changed */
+ if (!task->state_changed) {
+ task->state_changed = 1;
+ changed_tasks[changed_task_number++] = task;
+ /*
+ if (changed_task_number == changed_task_capacity) {
+ changed_task_capacity *= 2;
+ changed_tasks = xbt_realloc(changed_tasks, sizeof(SD_task_t) * changed_task_capacity);
+ }
+ */
+ changed_tasks[changed_task_number] = NULL;
+ }
+
+ /* remove the dependencies after this task */
+ while (xbt_dynar_length(task->tasks_after) > 0) {
+ xbt_dynar_get_cpy(task->tasks_after, 0, &dependency);
+ dst = dependency->dst;
+ SD_task_dependency_remove(task, dst);
+
+ /* is dst ready now? */
+ if (__SD_task_is_ready(dst) && !sd_global->watch_point_reached) {
+ INFO1("Executing task '%s'", SD_task_get_name(dst));
+ if (__SD_task_try_to_run(dst)) {
+ changed_tasks[changed_task_number++] = dst;
+ /*
+ if (changed_task_number == changed_task_capacity) {
+ changed_task_capacity *= 2;
+ changed_tasks = xbt_realloc(changed_tasks, sizeof(SD_task_t) * changed_task_capacity);
+ }
+ */
+ changed_tasks[changed_task_number] = NULL;
+ }
+ }
+ }
+ }
+
+ /* let's see which tasks have just failed */
+ while ((action = xbt_swag_extract(model->common_public->states.failed_action_set))) {
+ task = action->data;
+ INFO1("Task '%s' failed", SD_task_get_name(task));
+ __SD_task_set_state(task, SD_FAILED);
+ surf_workstation_model->common_public->action_free(action);
+ task->surf_action = NULL;
+
+ if (!task->state_changed) {
+ task->state_changed = 1;
+ changed_tasks[changed_task_number++] = task;
+ /*
+ if (changed_task_number == changed_task_capacity) {
+ changed_task_capacity *= 2;
+ changed_tasks = xbt_realloc(changed_tasks, sizeof(SD_task_t) * changed_task_capacity);
+ }
+ */
+ changed_tasks[changed_task_number] = NULL;
+ }
+ }
+ }
+
+ while (surf_timer_model->extension_public->get(&fun,(void*)&arg)) {
+ }
}
- return NULL;
+ /* we must reset every task->state_changed */
+ iter = 0;
+ while (changed_tasks[iter] != NULL) {
+ changed_tasks[iter]->state_changed = 0;
+ iter++;
+ }
+
+ INFO0("Simulation finished");
+ DEBUG3("elapsed_time = %f, total_time = %f, watch_point_reached = %d", elapsed_time, total_time, sd_global->watch_point_reached);
+ DEBUG1("current time = %f", surf_get_clock());
+
+ return changed_tasks;
+}
+
+/**
+ * \brief Returns the current clock
+ *
+ * \return the current clock, in second
+ */
+double SD_get_clock(void) {
+ SD_CHECK_INIT_DONE();
+
+ return surf_get_clock();
}
-/* Destroys all SG data. This function should be called when the simulation is over.
+/**
+ * \brief Destroys all SD internal data
+ *
+ * This function should be called when the simulation is over. Don't forget also to destroy
+ * the tasks.
+ *
+ * \see SD_init(), SD_task_destroy()
*/
-void SG_clean() {
- if (init_done) {
- xbt_dict_free(&sg_global->workstations);
- xbt_free(sg_global);
+void SD_exit(void) {
+ if (SD_INITIALISED()) {
+ DEBUG0("Destroying workstation and link dictionaries...");
+ xbt_dict_free(&sd_global->workstations);
+ xbt_dict_free(&sd_global->links);
+
+ DEBUG0("Destroying workstation and link arrays if necessary...");
+ if (sd_global->workstation_list != NULL)
+ xbt_free(sd_global->workstation_list);
+
+ if (sd_global->link_list != NULL)
+ xbt_free(sd_global->link_list);
+
+ if (sd_global->recyclable_route != NULL)
+ xbt_free(sd_global->recyclable_route);
+
+ DEBUG0("Destroying the swags...");
+ xbt_swag_free(sd_global->not_scheduled_task_set);
+ xbt_swag_free(sd_global->scheduled_task_set);
+ xbt_swag_free(sd_global->ready_task_set);
+ xbt_swag_free(sd_global->in_fifo_task_set);
+ xbt_swag_free(sd_global->running_task_set);
+ xbt_swag_free(sd_global->done_task_set);
+ xbt_swag_free(sd_global->failed_task_set);
+
+ xbt_free(sd_global);
+ sd_global = NULL;
+
+ DEBUG0("Exiting Surf...");
surf_exit();
- /* TODO: destroy the workstations, the links and the tasks */
+ }
+ else {
+ WARN0("SD_exit() called, but SimDag is not running");
+ /* we cannot use exceptions here because xbt is not running! */
}
}
