3 /* Copyright (c) 2004 Arnaud Legrand. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #include "surf_private.h"
11 #include "xbt/module.h"
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_kernel, surf,
14 "Logging specific to SURF (kernel)");
16 int use_sdp_solver = 0;
17 int use_lagrange_solver = 0;
19 /* Additional declarations for Windows potability. */
27 static const char *disk_drives_letter_table[MAX_DRIVE] = {
55 #endif /* #ifdef _WIN32 */
58 * Returns the initial path. On Windows the initial path is
59 * the current directory for the current process in the other
60 * case the function returns "./" that represents the current
61 * directory on Unix/Linux platforms.
64 const char *__surf_get_initial_path(void)
69 char current_directory[MAX_PATH + 1] = { 0 };
70 unsigned int len = GetCurrentDirectory(MAX_PATH + 1, current_directory);
76 strncpy(root, current_directory, 3);
78 for (i = 0; i < MAX_DRIVE; i++) {
79 if (toupper(root[0]) == disk_drives_letter_table[i][0])
80 return disk_drives_letter_table[i];
89 /* The __surf_is_absolute_file_path() returns 1 if
90 * file_path is a absolute file path, in the other
91 * case the function returns 0.
93 int __surf_is_absolute_file_path(const char *file_path)
96 WIN32_FIND_DATA wfd = { 0 };
97 HANDLE hFile = FindFirstFile(file_path, &wfd);
99 if (INVALID_HANDLE_VALUE == hFile)
105 return (file_path[0] == '/');
109 typedef struct surf_model_object {
111 } s_surf_model_object_t, *surf_model_object_t;
113 static double NOW = 0;
115 xbt_dynar_t model_list = NULL;
116 tmgr_history_t history = NULL;
117 lmm_system_t maxmin_system = NULL;
118 xbt_dynar_t surf_path = NULL;
119 const char *surf_action_state_names[6] = {
121 "SURF_ACTION_RUNNING",
122 "SURF_ACTION_FAILED",
124 "SURF_ACTION_TO_FREE",
125 "SURF_ACTION_NOT_IN_THE_SYSTEM"
128 s_surf_model_description_t surf_network_model_description[surf_network_model_description_size] = {
129 {"CM02", NULL, surf_network_model_init_CM02},
131 {"GTNets", NULL, surf_network_model_init_GTNETS},
134 {"SDP", NULL, surf_network_model_init_SDP},
136 {"Reno", NULL, surf_network_model_init_Reno},
137 {"Vegas", NULL, surf_network_model_init_Vegas}
140 s_surf_model_description_t surf_cpu_model_description[surf_cpu_model_description_size] = {
141 {"Cas01", NULL, surf_cpu_model_init_Cas01},
144 s_surf_model_description_t surf_workstation_model_description[surf_workstation_model_description_size] = {
145 {"CLM03", NULL, surf_workstation_model_init_CLM03, create_workstations},
146 {"compound", NULL, surf_workstation_model_init_compound, NULL},
147 {"ptask_L07", NULL, surf_workstation_model_init_ptask_L07, NULL}
150 void update_model_description(s_surf_model_description_t * table,
155 int i = find_model_description(table, table_size, name);
156 table[i].model = model;
159 int find_model_description(s_surf_model_description_t * table,
160 int table_size, const char *name)
163 char *name_list = NULL;
165 for (i = 0; i < table_size; i++)
166 if (!strcmp(name, table[i].name)) {
169 name_list = strdup(table[0].name);
170 for (i = 1; i < table_size; i++) {
172 xbt_realloc(name_list,
173 strlen(name_list) + strlen(table[i].name) + 2);
174 strcat(name_list, ", ");
175 strcat(name_list, table[i].name);
177 xbt_assert2(0, "Model '%s' is invalid! Valid models are: %s.", name,
181 double generic_maxmin_share_resources(xbt_swag_t running_actions,
184 void (*solve) (lmm_system_t))
186 surf_action_t action = NULL;
189 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
191 xbt_assert0(solve, "Give me a real solver function!");
194 xbt_swag_foreach(action, running_actions) {
195 value = lmm_variable_getvalue(VARIABLE(action));
196 if ((value > 0) || (action->max_duration >= 0))
204 if(action->remains>0)
205 min = action->remains / value;
208 if ((action->max_duration >= 0) && (action->max_duration < min))
209 min = action->max_duration;
211 min = action->max_duration;
213 DEBUG5("Found action (%p: duration = %f, remains = %f, value = %f) ! %f",
214 action, action->max_duration, action->remains, value, min);
216 for (action = xbt_swag_getNext(action, running_actions->offset);
218 action = xbt_swag_getNext(action, running_actions->offset)) {
219 value = lmm_variable_getvalue(VARIABLE(action));
221 if(action->remains>0)
222 value = action->remains / value;
227 DEBUG2("Updating min (value) with %p: %f", action, min);
230 if ((action->max_duration >= 0) && (action->max_duration < min)) {
231 min = action->max_duration;
232 DEBUG2("Updating min (duration) with %p: %f", action, min);
235 DEBUG1("min value : %f", min);
241 e_surf_action_state_t surf_action_get_state(surf_action_t action)
243 surf_action_state_t action_state =
244 &(action->model_type->common_public->states);
246 if (action->state_set == action_state->ready_action_set)
247 return SURF_ACTION_READY;
248 if (action->state_set == action_state->running_action_set)
249 return SURF_ACTION_RUNNING;
250 if (action->state_set == action_state->failed_action_set)
251 return SURF_ACTION_FAILED;
252 if (action->state_set == action_state->done_action_set)
253 return SURF_ACTION_DONE;
254 return SURF_ACTION_NOT_IN_THE_SYSTEM;
257 double surf_action_get_start_time(surf_action_t action)
259 return action->start;
262 double surf_action_get_finish_time(surf_action_t action)
264 return action->finish;
267 void surf_action_free(surf_action_t * action)
269 (*action)->model_type->common_public->action_cancel(*action);
274 void surf_action_change_state(surf_action_t action,
275 e_surf_action_state_t state)
277 surf_action_state_t action_state =
278 &(action->model_type->common_public->states);
279 XBT_IN2("(%p,%s)", action, surf_action_state_names[state]);
280 xbt_swag_remove(action, action->state_set);
282 if (state == SURF_ACTION_READY)
283 action->state_set = action_state->ready_action_set;
284 else if (state == SURF_ACTION_RUNNING)
285 action->state_set = action_state->running_action_set;
286 else if (state == SURF_ACTION_FAILED)
287 action->state_set = action_state->failed_action_set;
288 else if (state == SURF_ACTION_DONE)
289 action->state_set = action_state->done_action_set;
291 action->state_set = NULL;
293 if (action->state_set)
294 xbt_swag_insert(action, action->state_set);
298 void surf_action_set_data(surf_action_t action, void *data)
303 void surf_init(int *argc, char **argv)
308 const char *initial_path;
310 xbt_init(argc, argv);
313 /* retrieves the current directory of the current process */
314 initial_path = __surf_get_initial_path();
316 xbt_assert0((initial_path),
317 "__surf_get_initial_path() failed! Can't resolves current Windows directory");
319 surf_path = xbt_dynar_new(sizeof(char *), NULL);
320 xbt_dynar_push(surf_path, &initial_path);
322 for (i = 1; i < *argc; i++) {
323 if (!strncmp(argv[i], "--surf-path=", strlen("--surf-path="))) {
324 opt = strchr(argv[i], '=');
326 xbt_dynar_push(surf_path, &opt);
327 /*remove this from argv */
328 for (j = i + 1; j < *argc; j++) {
329 argv[j - 1] = argv[j];
333 i--; /* compensate effect of next loop incrementation */
338 model_list = xbt_dynar_new(sizeof(surf_model_private_t), NULL);
340 history = tmgr_history_new();
343 static char *path_name = NULL;
344 FILE *surf_fopen(const char *name, const char *mode)
349 unsigned int path_name_len = 0; /* don't count '\0' */
351 xbt_assert0(name, "Need a non-NULL file name");
353 xbt_assert0(surf_path,
354 "surf_init has to be called before using surf_fopen");
356 if (__surf_is_absolute_file_path(name)) { /* don't mess with absolute file names */
357 return fopen(name, mode);
359 } else { /* search relative files in the path */
362 path_name_len = strlen(name);
363 path_name = xbt_new0(char, path_name_len + 1);
366 xbt_dynar_foreach(surf_path, iter, path) {
367 if (path_name_len < strlen(path) + strlen(name) + 1) {
368 path_name_len = strlen(path) + strlen(name) + 1; /* plus '/' */
369 path_name = xbt_realloc(path_name, path_name_len + 1);
372 sprintf(path_name, "%s\\%s", path, name);
374 sprintf(path_name, "%s/%s", path, name);
376 file = fopen(path_name, mode);
387 surf_model_t model = NULL;
389 xbt_dynar_foreach(model_list, iter, model) {
390 model->common_private->finalize();
394 lmm_system_free(maxmin_system);
395 maxmin_system = NULL;
398 tmgr_history_free(history);
402 xbt_dynar_free(&model_list);
405 xbt_dynar_free(&surf_path);
408 surf_parse_lex_destroy();
413 surf_parse_free_callbacks();
414 xbt_dict_free(&route_table);
415 NOW=0; /* Just in case the user plans to restart the simulation afterward */
419 double surf_solve(void)
421 static int first_run = 1;
424 double next_event_date = -1.0;
425 double model_next_action_end = -1.0;
427 surf_model_object_t model_obj = NULL;
428 surf_model_t model = NULL;
429 tmgr_trace_event_t event = NULL;
434 ("First Run! Let's \"purge\" events and put models in the right state");
435 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
436 if (next_event_date > NOW)
439 tmgr_history_get_next_event_leq(history, next_event_date,
441 (void **) &model_obj))) {
442 model_obj->model->common_private->
443 update_resource_state(model_obj, event, value);
446 xbt_dynar_foreach(model_list, iter, model) {
447 model->common_private->update_actions_state(NOW, 0.0);
455 DEBUG0("Looking for next action end");
456 xbt_dynar_foreach(model_list, iter, model) {
457 DEBUG1("Running for Resource [%s]", model->common_public->name);
458 model_next_action_end =
459 model->common_private->share_resources(NOW);
460 DEBUG2("Resource [%s] : next action end = %f",
461 model->common_public->name, model_next_action_end);
462 if (((min < 0.0) || (model_next_action_end < min))
463 && (model_next_action_end >= 0.0))
464 min = model_next_action_end;
466 DEBUG1("Next action end : %f", min);
471 DEBUG0("Looking for next event");
472 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
473 DEBUG1("Next event : %f", next_event_date);
474 if (next_event_date > NOW + min)
476 DEBUG0("Updating models");
478 tmgr_history_get_next_event_leq(history, next_event_date,
480 (void **) &model_obj))) {
481 if (model_obj->model->common_private->
482 resource_used(model_obj)) {
483 min = next_event_date - NOW;
485 ("This event will modify model state. Next event set to %f",
488 /* update state of model_obj according to new value. Does not touch lmm.
489 It will be modified if needed when updating actions */
490 model_obj->model->common_private->
491 update_resource_state(model_obj, event, value);
495 DEBUG1("Duration set to %f", min);
499 xbt_dynar_foreach(model_list, iter, model) {
500 model->common_private->update_actions_state(NOW, min);
506 double surf_get_clock(void)