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. */
8 #include "surf_private.h"
9 #include "xbt/module.h"
11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_kernel, surf,
12 "Logging specific to SURF (kernel)");
16 /* Additional declarations for Windows potability. */
24 static const char* disk_drives_letter_table[MAX_DRIVE] =
53 #endif /* #ifdef _WIN32 */
56 * Returns the initial path. On Windows the initial path is
57 * the current directory for the current process in the other
58 * case the function returns "./" that represents the current
59 * directory on Unix/Linux platforms.
62 const char* __surf_get_initial_path(void)
67 char current_directory[MAX_PATH + 1] = {0};
68 unsigned int len = GetCurrentDirectory(MAX_PATH + 1,current_directory);
74 strncpy(root,current_directory,3);
76 for(i = 0; i<MAX_DRIVE;i++)
78 if(toupper(root[0]) == disk_drives_letter_table[i][0])
79 return disk_drives_letter_table[i];
88 /* The __surf_is_absolute_file_path() returns 1 if
89 * file_path is a absolute file path, in the other
90 * case the function returns 0.
92 int __surf_is_absolute_file_path(const char* file_path)
95 WIN32_FIND_DATA wfd ={0};
96 HANDLE hFile = FindFirstFile(file_path,&wfd);
98 if(INVALID_HANDLE_VALUE == hFile)
104 return (file_path[0] == '/');
108 typedef struct surf_resource_object {
109 surf_resource_t resource;
110 } s_surf_resource_object_t, *surf_resource_object_t;
112 static double NOW = 0;
114 xbt_dynar_t resource_list = NULL;
115 tmgr_history_t history = NULL;
116 lmm_system_t maxmin_system = NULL;
117 xbt_dynar_t surf_path = NULL;
118 const char *surf_action_state_names[6] = {
120 "SURF_ACTION_RUNNING",
121 "SURF_ACTION_FAILED",
123 "SURF_ACTION_TO_FREE",
124 "SURF_ACTION_NOT_IN_THE_SYSTEM"
127 double generic_maxmin_share_resources(xbt_swag_t running_actions,
130 return generic_maxmin_share_resources2(running_actions, offset,
134 double generic_maxmin_share_resources2(xbt_swag_t running_actions,
138 surf_action_t action = NULL;
141 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
149 xbt_assert0(0, "No CSDP found! You cannot use this model!");
153 xbt_swag_foreach(action, running_actions) {
154 value = lmm_variable_getvalue(VARIABLE(action));
155 if ((value > 0) || (action->max_duration >= 0))
163 min = action->remains / value;
164 if ((action->max_duration >= 0) && (action->max_duration < min))
165 min = action->max_duration;
167 min = action->max_duration;
170 for (action = xbt_swag_getNext(action, running_actions->offset);
172 action = xbt_swag_getNext(action, running_actions->offset)) {
173 value = lmm_variable_getvalue(VARIABLE(action));
175 value = action->remains / value;
179 if ((action->max_duration >= 0) && (action->max_duration < min))
180 min = action->max_duration;
186 e_surf_action_state_t surf_action_get_state(surf_action_t action)
188 surf_action_state_t action_state =
189 &(action->resource_type->common_public->states);
191 if (action->state_set == action_state->ready_action_set)
192 return SURF_ACTION_READY;
193 if (action->state_set == action_state->running_action_set)
194 return SURF_ACTION_RUNNING;
195 if (action->state_set == action_state->failed_action_set)
196 return SURF_ACTION_FAILED;
197 if (action->state_set == action_state->done_action_set)
198 return SURF_ACTION_DONE;
199 return SURF_ACTION_NOT_IN_THE_SYSTEM;
202 double surf_action_get_start_time(surf_action_t action) {
203 return action->start;
206 double surf_action_get_finish_time(surf_action_t action) {
207 return action->finish;
210 void surf_action_free(surf_action_t * action)
212 (*action)->resource_type->common_public->action_cancel(*action);
217 void surf_action_change_state(surf_action_t action,
218 e_surf_action_state_t state)
220 surf_action_state_t action_state =
221 &(action->resource_type->common_public->states);
222 XBT_IN2("(%p,%s)", action, surf_action_state_names[state]);
223 xbt_swag_remove(action, action->state_set);
225 if (state == SURF_ACTION_READY)
226 action->state_set = action_state->ready_action_set;
227 else if (state == SURF_ACTION_RUNNING)
228 action->state_set = action_state->running_action_set;
229 else if (state == SURF_ACTION_FAILED)
230 action->state_set = action_state->failed_action_set;
231 else if (state == SURF_ACTION_DONE)
232 action->state_set = action_state->done_action_set;
234 action->state_set = NULL;
236 if (action->state_set)
237 xbt_swag_insert(action, action->state_set);
241 void surf_action_set_data(surf_action_t action,
247 void surf_init(int *argc, char **argv)
252 const char* initial_path;
254 xbt_init(argc, argv);
257 /* retrieves the current directory of the current process*/
258 initial_path = __surf_get_initial_path();
260 xbt_assert0((initial_path), "__surf_get_initial_path() failed! Can't resolves current Windows directory");
262 surf_path = xbt_dynar_new(sizeof(char*), NULL);
263 xbt_dynar_push(surf_path,&initial_path);
265 for (i=1; i<*argc; i++) {
266 if (!strncmp(argv[i],"--surf-path=",strlen("--surf-path="))) {
267 opt=strchr(argv[i],'=');
269 xbt_dynar_push(surf_path,&opt);
270 /*remove this from argv*/
271 for (j=i+1; j<*argc; j++) {
276 i--; /* compensate effect of next loop incrementation */
281 resource_list = xbt_dynar_new(sizeof(surf_resource_private_t), NULL);
283 history = tmgr_history_new();
285 maxmin_system = lmm_system_new();
288 static char* path_name = NULL;
289 FILE *surf_fopen(const char *name, const char *mode)
294 int path_name_len = 0; /* don't count '\0' */
296 xbt_assert0(name, "Need a non-NULL file name");
298 xbt_assert0(surf_path,"surf_init has to be called before using surf_fopen");
300 if (__surf_is_absolute_file_path(name)) { /* don't mess with absolute file names */
301 return fopen(name,mode);
303 } else { /* search relative files in the path */
306 path_name_len = strlen(name);
307 path_name=xbt_new0(char,path_name_len+1);
310 xbt_dynar_foreach(surf_path,i,path) {
311 if(path_name_len < strlen(path)+strlen(name)+1) {
312 path_name_len = strlen(path)+strlen(name)+1; /* plus '/' */
313 path_name=xbt_realloc(path_name,path_name_len+1);
315 sprintf(path_name,"%s/%s",path, name);
316 file = fopen(path_name,mode);
317 if (file) return file;
326 surf_resource_t resource = NULL;
328 xbt_dynar_foreach(resource_list, i, resource) {
329 resource->common_private->finalize();
333 lmm_system_free(maxmin_system);
334 maxmin_system = NULL;
337 tmgr_history_free(history);
341 xbt_dynar_free(&resource_list);
344 xbt_dynar_free(&surf_path);
347 surf_parse_lex_destroy();
355 double surf_solve(void)
357 static int first_run = 1;
360 double next_event_date = -1.0;
361 double resource_next_action_end = -1.0;
363 surf_resource_object_t resource_obj = NULL;
364 surf_resource_t resource = NULL;
365 tmgr_trace_event_t event = NULL;
369 DEBUG0("First Run! Let's \"purge\" events and put resources in the right state");
370 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
371 if (next_event_date > NOW)
374 tmgr_history_get_next_event_leq(history, next_event_date,
376 (void **) &resource_obj))) {
377 resource_obj->resource->common_private->
378 update_resource_state(resource_obj, event, value);
381 xbt_dynar_foreach(resource_list, i, resource) {
382 resource->common_private->update_actions_state(NOW, 0.0);
390 DEBUG0("Looking for next action end");
391 xbt_dynar_foreach(resource_list, i, resource) {
392 resource_next_action_end =
393 resource->common_private->share_resources(NOW);
394 DEBUG2("Resource [%s] : next action end = %f",resource->common_public->name,
395 resource_next_action_end);
396 if (((min < 0.0) || (resource_next_action_end < min))
397 && (resource_next_action_end >= 0.0))
398 min = resource_next_action_end;
400 DEBUG1("Next action end : %f", min);
405 DEBUG0("Looking for next event");
406 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
407 DEBUG1("Next event : %f",next_event_date);
408 if (next_event_date > NOW + min)
410 DEBUG0("Updating resources");
412 tmgr_history_get_next_event_leq(history, next_event_date,
414 (void **) &resource_obj))) {
415 if (resource_obj->resource->common_private->
416 resource_used(resource_obj)) {
417 min = next_event_date - NOW;
418 DEBUG1("This event will modify resource state. Next event set to %f", min);
420 /* update state of resource_obj according to new value. Does not touch lmm.
421 It will be modified if needed when updating actions */
422 resource_obj->resource->common_private->
423 update_resource_state(resource_obj, event, value);
427 DEBUG1("Duration set to %f", min);
431 xbt_dynar_foreach(resource_list, i, resource) {
432 resource->common_private->update_actions_state(NOW, min);
438 double surf_get_clock(void)