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)");
17 int use_lagrange_solver=0;
19 /* Additional declarations for Windows potability. */
27 static const char* disk_drives_letter_table[MAX_DRIVE] =
56 #endif /* #ifdef _WIN32 */
59 * Returns the initial path. On Windows the initial path is
60 * the current directory for the current process in the other
61 * case the function returns "./" that represents the current
62 * directory on Unix/Linux platforms.
65 const char* __surf_get_initial_path(void)
70 char current_directory[MAX_PATH + 1] = {0};
71 unsigned int len = GetCurrentDirectory(MAX_PATH + 1,current_directory);
77 strncpy(root,current_directory,3);
79 for(i = 0; i<MAX_DRIVE;i++)
81 if(toupper(root[0]) == disk_drives_letter_table[i][0])
82 return disk_drives_letter_table[i];
91 /* The __surf_is_absolute_file_path() returns 1 if
92 * file_path is a absolute file path, in the other
93 * case the function returns 0.
95 int __surf_is_absolute_file_path(const char* file_path)
98 WIN32_FIND_DATA wfd ={0};
99 HANDLE hFile = FindFirstFile(file_path,&wfd);
101 if(INVALID_HANDLE_VALUE == hFile)
107 return (file_path[0] == '/');
111 typedef struct surf_resource_object {
112 surf_resource_t resource;
113 } s_surf_resource_object_t, *surf_resource_object_t;
115 static double NOW = 0;
117 xbt_dynar_t resource_list = NULL;
118 tmgr_history_t history = NULL;
119 lmm_system_t maxmin_system = NULL;
120 xbt_dynar_t surf_path = NULL;
121 const char *surf_action_state_names[6] = {
123 "SURF_ACTION_RUNNING",
124 "SURF_ACTION_FAILED",
126 "SURF_ACTION_TO_FREE",
127 "SURF_ACTION_NOT_IN_THE_SYSTEM"
130 double generic_maxmin_share_resources(xbt_swag_t running_actions,
133 return generic_maxmin_share_resources2(running_actions, offset,
137 double generic_maxmin_share_resources2(xbt_swag_t running_actions,
141 surf_action_t action = NULL;
144 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
146 if(!use_sdp_solver && !use_lagrange_solver)
148 else if(!use_lagrange_solver){
152 xbt_assert0(0, "No CSDP found! You cannot use this model!");
158 xbt_swag_foreach(action, running_actions) {
159 value = lmm_variable_getvalue(VARIABLE(action));
160 if ((value > 0) || (action->max_duration >= 0))
168 min = action->remains / value;
169 if ((action->max_duration >= 0) && (action->max_duration < min))
170 min = action->max_duration;
172 min = action->max_duration;
174 DEBUG5("Found an action (%p: duration = %f, remains = %f, value = %f) ! %f",action, action->max_duration, action->remains, value, min);
176 for (action = xbt_swag_getNext(action, running_actions->offset);
178 action = xbt_swag_getNext(action, running_actions->offset)) {
179 value = lmm_variable_getvalue(VARIABLE(action));
181 value = action->remains / value;
184 DEBUG2("Updating min (value) with %p: %f",action, min);
187 if ((action->max_duration >= 0) && (action->max_duration < min)) {
188 min = action->max_duration;
189 DEBUG2("Updating min (duration) with %p: %f",action, min);
192 DEBUG1("min value : %f",min);
198 e_surf_action_state_t surf_action_get_state(surf_action_t action)
200 surf_action_state_t action_state =
201 &(action->resource_type->common_public->states);
203 if (action->state_set == action_state->ready_action_set)
204 return SURF_ACTION_READY;
205 if (action->state_set == action_state->running_action_set)
206 return SURF_ACTION_RUNNING;
207 if (action->state_set == action_state->failed_action_set)
208 return SURF_ACTION_FAILED;
209 if (action->state_set == action_state->done_action_set)
210 return SURF_ACTION_DONE;
211 return SURF_ACTION_NOT_IN_THE_SYSTEM;
214 double surf_action_get_start_time(surf_action_t action) {
215 return action->start;
218 double surf_action_get_finish_time(surf_action_t action) {
219 return action->finish;
222 void surf_action_free(surf_action_t * action)
224 (*action)->resource_type->common_public->action_cancel(*action);
229 void surf_action_change_state(surf_action_t action,
230 e_surf_action_state_t state)
232 surf_action_state_t action_state =
233 &(action->resource_type->common_public->states);
234 XBT_IN2("(%p,%s)", action, surf_action_state_names[state]);
235 xbt_swag_remove(action, action->state_set);
237 if (state == SURF_ACTION_READY)
238 action->state_set = action_state->ready_action_set;
239 else if (state == SURF_ACTION_RUNNING)
240 action->state_set = action_state->running_action_set;
241 else if (state == SURF_ACTION_FAILED)
242 action->state_set = action_state->failed_action_set;
243 else if (state == SURF_ACTION_DONE)
244 action->state_set = action_state->done_action_set;
246 action->state_set = NULL;
248 if (action->state_set)
249 xbt_swag_insert(action, action->state_set);
253 void surf_action_set_data(surf_action_t action,
259 void surf_init(int *argc, char **argv)
264 const char* initial_path;
266 xbt_init(argc, argv);
269 /* retrieves the current directory of the current process*/
270 initial_path = __surf_get_initial_path();
272 xbt_assert0((initial_path), "__surf_get_initial_path() failed! Can't resolves current Windows directory");
274 surf_path = xbt_dynar_new(sizeof(char*), NULL);
275 xbt_dynar_push(surf_path,&initial_path);
277 for (i=1; i<*argc; i++) {
278 if (!strncmp(argv[i],"--surf-path=",strlen("--surf-path="))) {
279 opt=strchr(argv[i],'=');
281 xbt_dynar_push(surf_path,&opt);
282 /*remove this from argv*/
283 for (j=i+1; j<*argc; j++) {
288 i--; /* compensate effect of next loop incrementation */
293 resource_list = xbt_dynar_new(sizeof(surf_resource_private_t), NULL);
295 history = tmgr_history_new();
297 maxmin_system = lmm_system_new();
300 static char* path_name = NULL;
301 FILE *surf_fopen(const char *name, const char *mode)
306 int path_name_len = 0; /* don't count '\0' */
308 xbt_assert0(name, "Need a non-NULL file name");
310 xbt_assert0(surf_path,"surf_init has to be called before using surf_fopen");
312 if (__surf_is_absolute_file_path(name)) { /* don't mess with absolute file names */
313 return fopen(name,mode);
315 } else { /* search relative files in the path */
318 path_name_len = strlen(name);
319 path_name=xbt_new0(char,path_name_len+1);
322 xbt_dynar_foreach(surf_path,i,path) {
323 if(path_name_len < strlen(path)+strlen(name)+1) {
324 path_name_len = strlen(path)+strlen(name)+1; /* plus '/' */
325 path_name=xbt_realloc(path_name,path_name_len+1);
327 sprintf(path_name,"%s/%s",path, name);
328 file = fopen(path_name,mode);
329 if (file) return file;
338 surf_resource_t resource = NULL;
340 xbt_dynar_foreach(resource_list, i, resource) {
341 resource->common_private->finalize();
345 lmm_system_free(maxmin_system);
346 maxmin_system = NULL;
349 tmgr_history_free(history);
353 xbt_dynar_free(&resource_list);
356 xbt_dynar_free(&surf_path);
359 surf_parse_lex_destroy();
367 double surf_solve(void)
369 static int first_run = 1;
372 double next_event_date = -1.0;
373 double resource_next_action_end = -1.0;
375 surf_resource_object_t resource_obj = NULL;
376 surf_resource_t resource = NULL;
377 tmgr_trace_event_t event = NULL;
381 DEBUG0("First Run! Let's \"purge\" events and put resources in the right state");
382 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
383 if (next_event_date > NOW)
386 tmgr_history_get_next_event_leq(history, next_event_date,
388 (void **) &resource_obj))) {
389 resource_obj->resource->common_private->
390 update_resource_state(resource_obj, event, value);
393 xbt_dynar_foreach(resource_list, i, resource) {
394 resource->common_private->update_actions_state(NOW, 0.0);
402 DEBUG0("Looking for next action end");
403 xbt_dynar_foreach(resource_list, i, resource) {
404 resource_next_action_end =
405 resource->common_private->share_resources(NOW);
406 DEBUG2("Resource [%s] : next action end = %f",resource->common_public->name,
407 resource_next_action_end);
408 if (((min < 0.0) || (resource_next_action_end < min))
409 && (resource_next_action_end >= 0.0))
410 min = resource_next_action_end;
412 DEBUG1("Next action end : %f", min);
417 DEBUG0("Looking for next event");
418 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
419 DEBUG1("Next event : %f",next_event_date);
420 if (next_event_date > NOW + min)
422 DEBUG0("Updating resources");
424 tmgr_history_get_next_event_leq(history, next_event_date,
426 (void **) &resource_obj))) {
427 if (resource_obj->resource->common_private->
428 resource_used(resource_obj)) {
429 min = next_event_date - NOW;
430 DEBUG1("This event will modify resource state. Next event set to %f", min);
432 /* update state of resource_obj according to new value. Does not touch lmm.
433 It will be modified if needed when updating actions */
434 resource_obj->resource->common_private->
435 update_resource_state(resource_obj, event, value);
439 DEBUG1("Duration set to %f", min);
443 xbt_dynar_foreach(resource_list, i, resource) {
444 resource->common_private->update_actions_state(NOW, min);
450 double surf_get_clock(void)