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 /* Additional declarations for Windows potability. */
24 static const char *disk_drives_letter_table[MAX_DRIVE] = {
52 #endif /* #ifdef _WIN32 */
55 * Returns the initial path. On Windows the initial path is
56 * the current directory for the current process in the other
57 * case the function returns "./" that represents the current
58 * directory on Unix/Linux platforms.
61 const char *__surf_get_initial_path(void)
66 char current_directory[MAX_PATH + 1] = { 0 };
67 unsigned int len = GetCurrentDirectory(MAX_PATH + 1, current_directory);
73 strncpy(root, current_directory, 3);
75 for (i = 0; i < MAX_DRIVE; i++) {
76 if (toupper(root[0]) == disk_drives_letter_table[i][0])
77 return disk_drives_letter_table[i];
86 /* The __surf_is_absolute_file_path() returns 1 if
87 * file_path is a absolute file path, in the other
88 * case the function returns 0.
90 int __surf_is_absolute_file_path(const char *file_path)
93 WIN32_FIND_DATA wfd = { 0 };
94 HANDLE hFile = FindFirstFile(file_path, &wfd);
96 if (INVALID_HANDLE_VALUE == hFile)
102 return (file_path[0] == '/');
106 static double NOW = 0;
108 xbt_dynar_t model_list = NULL;
109 tmgr_history_t history = NULL;
110 lmm_system_t maxmin_system = NULL;
111 xbt_dynar_t surf_path = NULL;
113 /* Don't forget to update the option description in smx_config when you change this */
114 s_surf_model_description_t surf_network_model_description[] = {
115 {"Constant", NULL, surf_network_model_init_Constant},
116 {"CM02", NULL, surf_network_model_init_CM02},
117 {"LV08", NULL, surf_network_model_init_LegrandVelho},
119 {"GTNets", NULL, surf_network_model_init_GTNETS},
121 {"Reno", NULL, surf_network_model_init_Reno},
122 {"Reno2", NULL, surf_network_model_init_Reno2},
123 {"Vegas", NULL, surf_network_model_init_Vegas},
124 {NULL, NULL, NULL} /* this array must be NULL terminated */
127 s_surf_model_description_t surf_cpu_model_description[] = {
128 {"Cas01_fullupdate", NULL, surf_cpu_model_init_Cas01},
129 {"Cas01", NULL, surf_cpu_model_init_Cas01_im},
130 {"CpuTI", NULL, surf_cpu_model_init_ti},
131 {NULL, NULL, NULL} /* this array must be NULL terminated */
134 s_surf_model_description_t surf_workstation_model_description[] = {
135 {"CLM03", NULL, surf_workstation_model_init_CLM03, create_workstations},
136 {"compound", NULL, surf_workstation_model_init_compound,
137 create_workstations},
138 {"ptask_L07", NULL, surf_workstation_model_init_ptask_L07, NULL},
139 {NULL, NULL, NULL} /* this array must be NULL terminated */
142 void update_model_description(s_surf_model_description_t * table,
143 const char *name, surf_model_t model)
145 int i = find_model_description(table, name);
146 table[i].model = model;
149 int find_model_description(s_surf_model_description_t * table,
153 char *name_list = NULL;
155 for (i = 0; table[i].name; i++)
156 if (!strcmp(name, table[i].name)) {
159 name_list = strdup(table[0].name);
160 for (i = 1; table[i].name; i++) {
162 xbt_realloc(name_list, strlen(name_list) + strlen(table[i].name) + 2);
163 strcat(name_list, ", ");
164 strcat(name_list, table[i].name);
166 xbt_assert2(0, "Model '%s' is invalid! Valid models are: %s.", name,
170 double generic_maxmin_share_resources(xbt_swag_t running_actions,
173 void (*solve) (lmm_system_t))
175 surf_action_t action = NULL;
178 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
180 xbt_assert0(solve, "Give me a real solver function!");
183 xbt_swag_foreach(action, running_actions) {
184 value = lmm_variable_getvalue(VARIABLE(action));
185 if ((value > 0) || (action->max_duration >= 0))
193 if (action->remains > 0)
194 min = action->remains / value;
197 if ((action->max_duration >= 0) && (action->max_duration < min))
198 min = action->max_duration;
200 min = action->max_duration;
203 for (action = xbt_swag_getNext(action, running_actions->offset);
204 action; action = xbt_swag_getNext(action, running_actions->offset)) {
205 value = lmm_variable_getvalue(VARIABLE(action));
207 if (action->remains > 0)
208 value = action->remains / value;
213 DEBUG2("Updating min (value) with %p: %f", action, min);
216 if ((action->max_duration >= 0) && (action->max_duration < min)) {
217 min = action->max_duration;
218 DEBUG2("Updating min (duration) with %p: %f", action, min);
221 DEBUG1("min value : %f", min);
228 XBT_LOG_EXTERNAL_CATEGORY(surf_cpu);
229 XBT_LOG_EXTERNAL_CATEGORY(surf_kernel);
230 XBT_LOG_EXTERNAL_CATEGORY(surf_lagrange);
231 XBT_LOG_EXTERNAL_CATEGORY(surf_lagrange_dichotomy);
232 XBT_LOG_EXTERNAL_CATEGORY(surf_maxmin);
233 XBT_LOG_EXTERNAL_CATEGORY(surf_network);
234 XBT_LOG_EXTERNAL_CATEGORY(surf_trace);
235 XBT_LOG_EXTERNAL_CATEGORY(surf_parse);
236 XBT_LOG_EXTERNAL_CATEGORY(surf_timer);
237 XBT_LOG_EXTERNAL_CATEGORY(surf_workstation);
238 XBT_LOG_EXTERNAL_CATEGORY(surf_config);
239 XBT_LOG_EXTERNAL_CATEGORY(surf_routing);
243 XBT_LOG_EXTERNAL_CATEGORY(surf_network_gtnets);
246 void surf_init(int *argc, char **argv)
248 /* Connect our log channels: that must be done manually under windows */
249 XBT_LOG_CONNECT(surf_cpu, surf);
250 XBT_LOG_CONNECT(surf_kernel, surf);
251 XBT_LOG_CONNECT(surf_lagrange, surf);
252 XBT_LOG_CONNECT(surf_lagrange_dichotomy, surf_lagrange);
253 XBT_LOG_CONNECT(surf_maxmin, surf);
254 XBT_LOG_CONNECT(surf_network, surf);
255 XBT_LOG_CONNECT(surf_trace, surf);
256 XBT_LOG_CONNECT(surf_parse, surf);
257 XBT_LOG_CONNECT(surf_timer, surf);
258 XBT_LOG_CONNECT(surf_workstation, surf);
259 XBT_LOG_CONNECT(surf_config, surf);
260 XBT_LOG_CONNECT(surf_routing, surf);
263 XBT_LOG_CONNECT(surf_network_gtnets, surf);
266 xbt_init(argc, argv);
268 model_list = xbt_dynar_new(sizeof(surf_model_private_t), NULL);
270 history = tmgr_history_new();
272 surf_config_init(argc, argv);
276 # define FILE_DELIM "\\"
278 # define FILE_DELIM "/" /* FIXME: move to better location */
281 FILE *surf_fopen(const char *name, const char *mode)
284 char *path_elm = NULL;
290 if (__surf_is_absolute_file_path(name)) /* don't mess with absolute file names */
291 return fopen(name, mode);
293 /* search relative files in the path */
294 xbt_dynar_foreach(surf_path, cpt, path_elm) {
295 buff = bprintf("%s" FILE_DELIM "%s", path_elm, name);
296 file = fopen(buff, mode);
308 surf_model_t model = NULL;
310 surf_config_finalize();
312 xbt_dynar_foreach(model_list, iter, model)
313 model->model_private->finalize();
314 xbt_dynar_free(&model_list);
317 lmm_system_free(maxmin_system);
318 maxmin_system = NULL;
321 tmgr_history_free(history);
326 xbt_dynar_free(&surf_path);
329 surf_parse_lex_destroy();
330 surf_parse_free_callbacks();
331 xbt_dict_free(&route_table);
332 NOW = 0; /* Just in case the user plans to restart the simulation afterward */
336 void surf_presolve(void)
338 double next_event_date = -1.0;
339 tmgr_trace_event_t event = NULL;
341 surf_resource_t resource = NULL;
342 surf_model_t model = NULL;
346 ("First Run! Let's \"purge\" events and put models in the right state");
347 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
348 if (next_event_date > NOW)
351 tmgr_history_get_next_event_leq(history, next_event_date,
352 &value, (void **) &resource))) {
353 resource->model->model_private->update_resource_state(resource,
358 xbt_dynar_foreach(model_list, iter, model)
359 model->model_private->update_actions_state(NOW, 0.0);
362 double surf_solve(void)
365 double next_event_date = -1.0;
366 double model_next_action_end = -1.0;
368 surf_resource_t resource = NULL;
369 surf_model_t model = NULL;
370 tmgr_trace_event_t event = NULL;
375 DEBUG0("Looking for next action end");
376 xbt_dynar_foreach(model_list, iter, model) {
377 DEBUG1("Running for Resource [%s]", model->name);
378 model_next_action_end = model->model_private->share_resources(NOW);
379 DEBUG2("Resource [%s] : next action end = %f",
380 model->name, model_next_action_end);
381 if (((min < 0.0) || (model_next_action_end < min))
382 && (model_next_action_end >= 0.0))
383 min = model_next_action_end;
385 DEBUG1("Next action end : %f", min);
387 DEBUG0("Looking for next event");
388 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
389 DEBUG1("Next TRACE event : %f", next_event_date);
390 if ((min != -1.0) && (next_event_date > NOW + min))
392 DEBUG0("Updating models");
394 tmgr_history_get_next_event_leq(history, next_event_date,
395 &value, (void **) &resource))) {
396 if (resource->model->model_private->resource_used(resource)) {
397 min = next_event_date - NOW;
399 ("This event will modify model state. Next event set to %f", min);
401 /* update state of model_obj according to new value. Does not touch lmm.
402 It will be modified if needed when updating actions */
403 DEBUG2("Calling update_resource_state for resource %s with min %lf",
404 resource->model->name, min);
405 resource->model->model_private->update_resource_state(resource, event,
410 /* FIXME: Moved this test to here to avoid stoping simulation if there are actions running on cpus and all cpus are with availability = 0.
411 * This may cause an infinite loop if one cpu has a trace with periodicity = 0 and the other a trace with periodicity > 0.
412 * The options are: all traces with same periodicity(0 or >0) or we need to change the way how the events are managed */
416 DEBUG1("Duration set to %f", min);
420 xbt_dynar_foreach(model_list, iter, model)
421 model->model_private->update_actions_state(NOW, min);
426 double surf_get_clock(void)