-/* Authors: Arnaud Legrand */
+/* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. 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. */
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include <ctype.h>
#include "surf_private.h"
-#include "cpu_private.h"
+#include "xbt/module.h"
+#include "mc/mc.h"
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_kernel, surf,
+ "Logging specific to SURF (kernel)");
+
+/* Additional declarations for Windows potability. */
+
+#ifndef MAX_DRIVE
+#define MAX_DRIVE 26
+#endif
+
+#ifdef _WIN32
+#include <windows.h>
+static const char *disk_drives_letter_table[MAX_DRIVE] = {
+ "A:\\",
+ "B:\\",
+ "C:\\",
+ "D:\\",
+ "E:\\",
+ "F:\\",
+ "G:\\",
+ "H:\\",
+ "I:\\",
+ "J:\\",
+ "K:\\",
+ "L:\\",
+ "M:\\",
+ "N:\\",
+ "O:\\",
+ "P:\\",
+ "Q:\\",
+ "R:\\",
+ "S:\\",
+ "T:\\",
+ "U:\\",
+ "V:\\",
+ "W:\\",
+ "X:\\",
+ "Y:\\",
+ "Z:\\"
+};
+#endif /* #ifdef _WIN32 */
+
+/*
+ * Returns the initial path. On Windows the initial path is
+ * the current directory for the current process in the other
+ * case the function returns "./" that represents the current
+ * directory on Unix/Linux platforms.
+ */
+
+const char *__surf_get_initial_path(void)
+{
+
+#ifdef _WIN32
+ unsigned i;
+ char current_directory[MAX_PATH + 1] = { 0 };
+ unsigned int len = GetCurrentDirectory(MAX_PATH + 1, current_directory);
+ char root[4] = { 0 };
+
+ if (!len)
+ return NULL;
+
+ strncpy(root, current_directory, 3);
+
+ for (i = 0; i < MAX_DRIVE; i++) {
+ if (toupper(root[0]) == disk_drives_letter_table[i][0])
+ return disk_drives_letter_table[i];
+ }
+
+ return NULL;
+#else
+ return "./";
+#endif
+}
+
+/* The __surf_is_absolute_file_path() returns 1 if
+ * file_path is a absolute file path, in the other
+ * case the function returns 0.
+ */
+int __surf_is_absolute_file_path(const char *file_path)
+{
+#ifdef _WIN32
+ WIN32_FIND_DATA wfd = { 0 };
+ HANDLE hFile = FindFirstFile(file_path, &wfd);
+
+ if (INVALID_HANDLE_VALUE == hFile)
+ return 0;
+
+ FindClose(hFile);
+ return 1;
+#else
+ return (file_path[0] == '/');
+#endif
+}
+
+double NOW = 0;
+
+xbt_dynar_t model_list = NULL;
+tmgr_history_t history = NULL;
+lmm_system_t maxmin_system = NULL;
+xbt_dynar_t surf_path = NULL;
+
+/* Don't forget to update the option description in smx_config when you change this */
+s_surf_model_description_t surf_network_model_description[] = {
+ {"Constant", "Simplistic network model where all communication take a constant time (one second)", NULL, surf_network_model_init_Constant},
+ {"Vivaldi", "Scalable network model using the Vivaldi coordinate ideas", NULL, surf_network_model_init_Vivaldi},
+ {"CM02", "Realistic network model with lmm_solve and no correction factors", NULL, surf_network_model_init_CM02},
+ {"LV08", "Realistic network model with lmm_solve and these correction factors: latency*=10.4, bandwidth*=.92, S=8775" , NULL, surf_network_model_init_LegrandVelho},
+#ifdef HAVE_GTNETS
+ {"GTNets", "Network Pseudo-model using the GTNets simulator instead of an analytic model", NULL, surf_network_model_init_GTNETS},
+#endif
+ {"Reno", "Model using lagrange_solve instead of lmm_solve (experts only)", NULL, surf_network_model_init_Reno},
+ {"Reno2", "Model using lagrange_solve instead of lmm_solve (experts only)", NULL, surf_network_model_init_Reno2},
+ {"Vegas", "Model using lagrange_solve instead of lmm_solve (experts only)", NULL, surf_network_model_init_Vegas},
+ {NULL, NULL, NULL, NULL} /* this array must be NULL terminated */
+};
+
+s_surf_model_description_t surf_cpu_model_description[] = {
+ {"Cas01_fullupdate", "CPU classical model time=size/power", NULL, surf_cpu_model_init_Cas01},
+ {"Cas01", "Variation of Cas01_fullupdate with partial invalidation optimization of lmm system. Should produce the same values, only faster", NULL, surf_cpu_model_init_Cas01_im},
+ {"CpuTI", "Variation of Cas01 with also trace integration. Should produce the same values, only faster if you use availability traces", NULL, surf_cpu_model_init_ti},
+ {NULL, NULL, NULL, NULL} /* this array must be NULL terminated */
+};
+
+s_surf_model_description_t surf_workstation_model_description[] = {
+ {"CLM03", "Default workstation model, using LV08 and CM02 as network and CPU", NULL, surf_workstation_model_init_CLM03, create_workstations},
+ {"compound", "Workstation model allowing you to use other network and CPU models", NULL, surf_workstation_model_init_compound, create_workstations},
+ {"ptask_L07", "Workstation model with better parallel task modeling", NULL, surf_workstation_model_init_ptask_L07, NULL},
+ {NULL, NULL, NULL, NULL} /* this array must be NULL terminated */
+};
+
+void update_model_description(s_surf_model_description_t * table,
+ const char *name, surf_model_t model)
+{
+ int i = find_model_description(table, name);
+ table[i].model = model;
+}
+
+/** Displays the long description of all registered models, and quit */
+void model_help(const char* category, s_surf_model_description_t * table) {
+ int i;
+ printf("Long description of the %s models accepted by this simulator:\n",category);
+ for (i = 0; table[i].name; i++)
+ printf(" %s: %s\n", table[i].name, table[i].description);
+}
+
+int find_model_description(s_surf_model_description_t * table,
+ const char *name)
+{
+ int i;
+ char *name_list = NULL;
+
+ for (i = 0; table[i].name; i++)
+ if (!strcmp(name, table[i].name)) {
+ return i;
+ }
+ name_list = strdup(table[0].name);
+ for (i = 1; table[i].name; i++) {
+ name_list =
+ xbt_realloc(name_list, strlen(name_list) + strlen(table[i].name) + 2);
+ strcat(name_list, ", ");
+ strcat(name_list, table[i].name);
+ }
+ xbt_assert2(0, "Model '%s' is invalid! Valid models are: %s.", name,
+ name_list);
+}
+
+double generic_maxmin_share_resources(xbt_swag_t running_actions,
+ size_t offset,
+ lmm_system_t sys,
+ void (*solve) (lmm_system_t))
+{
+ surf_action_t action = NULL;
+ double min = -1;
+ double value = -1;
+#define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
+
+ xbt_assert0(solve, "Give me a real solver function!");
+ solve(sys);
-s_surf_global_t surf_global;
+ xbt_swag_foreach(action, running_actions) {
+ value = lmm_variable_getvalue(VARIABLE(action));
+ if ((value > 0) || (action->max_duration >= 0))
+ break;
+ }
-e_surf_action_state_t surf_action_get_state(surf_action_t action)
+ if (!action)
+ return -1.0;
+
+ if (value > 0) {
+ if (action->remains > 0)
+ min = action->remains / value;
+ else
+ min = 0.0;
+ if ((action->max_duration >= 0) && (action->max_duration < min))
+ min = action->max_duration;
+ } else
+ min = action->max_duration;
+
+
+ for (action = xbt_swag_getNext(action, running_actions->offset);
+ action; action = xbt_swag_getNext(action, running_actions->offset)) {
+ value = lmm_variable_getvalue(VARIABLE(action));
+ if (value > 0) {
+ if (action->remains > 0)
+ value = action->remains / value;
+ else
+ value = 0.0;
+ if (value < min) {
+ min = value;
+ DEBUG2("Updating min (value) with %p: %f", action, min);
+ }
+ }
+ if ((action->max_duration >= 0) && (action->max_duration < min)) {
+ min = action->max_duration;
+ DEBUG2("Updating min (duration) with %p: %f", action, min);
+ }
+ }
+ DEBUG1("min value : %f", min);
+
+#undef VARIABLE
+ return min;
+}
+
+
+XBT_LOG_EXTERNAL_CATEGORY(surf_cpu);
+XBT_LOG_EXTERNAL_CATEGORY(surf_kernel);
+XBT_LOG_EXTERNAL_CATEGORY(surf_lagrange);
+XBT_LOG_EXTERNAL_CATEGORY(surf_lagrange_dichotomy);
+XBT_LOG_EXTERNAL_CATEGORY(surf_maxmin);
+XBT_LOG_EXTERNAL_CATEGORY(surf_network);
+XBT_LOG_EXTERNAL_CATEGORY(surf_trace);
+XBT_LOG_EXTERNAL_CATEGORY(surf_parse);
+XBT_LOG_EXTERNAL_CATEGORY(surf_timer);
+XBT_LOG_EXTERNAL_CATEGORY(surf_workstation);
+XBT_LOG_EXTERNAL_CATEGORY(surf_config);
+XBT_LOG_EXTERNAL_CATEGORY(surf_routing);
+
+
+#ifdef HAVE_GTNETS
+XBT_LOG_EXTERNAL_CATEGORY(surf_network_gtnets);
+#endif
+
+void surf_init(int *argc, char **argv)
{
- if(action->state_set == surf_global.ready_action_set)
- return SURF_ACTION_READY;
- if(action->state_set == surf_global.running_action_set)
- return SURF_ACTION_RUNNING;
- if(action->state_set == surf_global.failed_action_set)
- return SURF_ACTION_FAILED;
- if(action->state_set == surf_global.done_action_set)
- return SURF_ACTION_DONE;
- return SURF_ACTION_NOT_IN_THE_SYSTEM;
+
+ if (_surf_do_model_check)
+ MC_memory_init();
+
+ /* Connect our log channels: that must be done manually under windows */
+ XBT_LOG_CONNECT(surf_cpu, surf);
+ XBT_LOG_CONNECT(surf_kernel, surf);
+ XBT_LOG_CONNECT(surf_lagrange, surf);
+ XBT_LOG_CONNECT(surf_lagrange_dichotomy, surf_lagrange);
+ XBT_LOG_CONNECT(surf_maxmin, surf);
+ XBT_LOG_CONNECT(surf_network, surf);
+ XBT_LOG_CONNECT(surf_trace, surf);
+ XBT_LOG_CONNECT(surf_parse, surf);
+ XBT_LOG_CONNECT(surf_timer, surf);
+ XBT_LOG_CONNECT(surf_workstation, surf);
+ XBT_LOG_CONNECT(surf_config, surf);
+ XBT_LOG_CONNECT(surf_routing, surf);
+
+#ifdef HAVE_GTNETS
+ XBT_LOG_CONNECT(surf_network_gtnets, surf);
+#endif
+
+ xbt_init(argc, argv);
+ if (!model_list)
+ model_list = xbt_dynar_new(sizeof(surf_model_private_t), NULL);
+ if (!history)
+ history = tmgr_history_new();
+
+ surf_config_init(argc, argv);
}
-void surf_action_free(surf_action_t * action)
+#ifdef WIN32
+# define FILE_DELIM "\\"
+#else
+# define FILE_DELIM "/" /* FIXME: move to better location */
+#endif
+
+FILE *surf_fopen(const char *name, const char *mode)
{
- (*action)->resource_type->action_cancel(*action);
- xbt_free(*action);
- *action=NULL;
+ unsigned int cpt;
+ char *path_elm = NULL;
+ char *buff;
+ FILE *file = NULL;
+
+ xbt_assert(name);
+
+ if (__surf_is_absolute_file_path(name)) /* don't mess with absolute file names */
+ return fopen(name, mode);
+
+ /* search relative files in the path */
+ xbt_dynar_foreach(surf_path, cpt, path_elm) {
+ buff = bprintf("%s" FILE_DELIM "%s", path_elm, name);
+ file = fopen(buff, mode);
+ free(buff);
+
+ if (file)
+ return file;
+ }
+ return NULL;
}
-void surf_action_change_state(surf_action_t action, e_surf_action_state_t state)
+void surf_exit(void)
{
- xbt_swag_extract(action, action->state_set);
- if(state == SURF_ACTION_READY)
- action->state_set = surf_global.ready_action_set;
- else if(state == SURF_ACTION_RUNNING)
- action->state_set = surf_global.running_action_set;
- else if(state == SURF_ACTION_FAILED)
- action->state_set = surf_global.failed_action_set;
- else if(state == SURF_ACTION_DONE)
- action->state_set = surf_global.done_action_set;
- else action->state_set = NULL;
+ unsigned int iter;
+ surf_model_t model = NULL;
+
+ surf_config_finalize();
+
+ xbt_dynar_foreach(model_list, iter, model)
+ model->model_private->finalize();
+ xbt_dynar_free(&model_list);
+
+ if (maxmin_system) {
+ lmm_system_free(maxmin_system);
+ maxmin_system = NULL;
+ }
+ if (history) {
+ tmgr_history_free(history);
+ history = NULL;
+ }
+
+ if (surf_path)
+ xbt_dynar_free(&surf_path);
- if(action->state_set) xbt_swag_insert(action, action->state_set);
+ tmgr_finalize();
+ surf_parse_lex_destroy();
+ surf_parse_free_callbacks();
+ xbt_dict_free(&route_table);
+ NOW = 0; /* Just in case the user plans to restart the simulation afterward */
}
-void surf_init(void)
+void surf_presolve(void)
{
- surf_cpu_resource = surf_cpu_resource_init();
+ double next_event_date = -1.0;
+ tmgr_trace_event_t event = NULL;
+ double value = -1.0;
+ surf_resource_t resource = NULL;
+ surf_model_t model = NULL;
+ unsigned int iter;
+
+ DEBUG0
+ ("First Run! Let's \"purge\" events and put models in the right state");
+ while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
+ if (next_event_date > NOW)
+ break;
+ while ((event =
+ tmgr_history_get_next_event_leq(history, next_event_date,
+ &value, (void **) &resource))) {
+ resource->model->model_private->update_resource_state(resource,
+ event, value,
+ NOW);
+ }
+ }
+ xbt_dynar_foreach(model_list, iter, model)
+ model->model_private->update_actions_state(NOW, 0.0);
}
-/* xbt_heap_float_t surf_solve(void) */
-/* { */
-/* } */
+double surf_solve(void)
+{
+ double min = -1.0;
+ double next_event_date = -1.0;
+ double model_next_action_end = -1.0;
+ double value = -1.0;
+ surf_resource_t resource = NULL;
+ surf_model_t model = NULL;
+ tmgr_trace_event_t event = NULL;
+ unsigned int iter;
+
+ min = -1.0;
+
+ DEBUG0("Looking for next action end");
+ xbt_dynar_foreach(model_list, iter, model) {
+ DEBUG1("Running for Resource [%s]", model->name);
+ model_next_action_end = model->model_private->share_resources(NOW);
+ DEBUG2("Resource [%s] : next action end = %f",
+ model->name, model_next_action_end);
+ if (((min < 0.0) || (model_next_action_end < min))
+ && (model_next_action_end >= 0.0))
+ min = model_next_action_end;
+ }
+ DEBUG1("Next action end : %f", min);
+ DEBUG0("Looking for next event");
+ while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
+ DEBUG1("Next TRACE event : %f", next_event_date);
+ if ((min != -1.0) && (next_event_date > NOW + min))
+ break;
+ DEBUG0("Updating models");
+ while ((event =
+ tmgr_history_get_next_event_leq(history, next_event_date,
+ &value, (void **) &resource))) {
+ if (resource->model->model_private->resource_used(resource)) {
+ min = next_event_date - NOW;
+ DEBUG1
+ ("This event will modify model state. Next event set to %f", min);
+ }
+ /* update state of model_obj according to new value. Does not touch lmm.
+ It will be modified if needed when updating actions */
+ DEBUG2("Calling update_resource_state for resource %s with min %lf",
+ resource->model->name, min);
+ resource->model->model_private->update_resource_state(resource, event,
+ value, NOW + min);
+ }
+ }
+
+ /* FIXME: Moved this test to here to avoid stoping simulation if there are actions running on cpus and all cpus are with availability = 0.
+ * This may cause an infinite loop if one cpu has a trace with periodicity = 0 and the other a trace with periodicity > 0.
+ * The options are: all traces with same periodicity(0 or >0) or we need to change the way how the events are managed */
+ if (min < 0.0)
+ return -1.0;
+
+ DEBUG1("Duration set to %f", min);
+
+ NOW = NOW + min;
+
+ xbt_dynar_foreach(model_list, iter, model)
+ model->model_private->update_actions_state(NOW, min);
+
+ return min;
+}
+
+double surf_get_clock(void)
+{
+ return NOW;
+}
