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,
134 maxmin_system, lmm_solve);
137 double generic_maxmin_share_resources2(xbt_swag_t running_actions,
140 void (*solve)(lmm_system_t))
142 surf_action_t action = NULL;
145 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
147 xbt_assert0(solve,"Give me a real solver function!");
150 xbt_swag_foreach(action, running_actions) {
151 value = lmm_variable_getvalue(VARIABLE(action));
152 if ((value > 0) || (action->max_duration >= 0))
160 min = action->remains / value;
161 if ((action->max_duration >= 0) && (action->max_duration < min))
162 min = action->max_duration;
164 min = action->max_duration;
166 DEBUG5("Found an action (%p: duration = %f, remains = %f, value = %f) ! %f",action, action->max_duration, action->remains, value, min);
168 for (action = xbt_swag_getNext(action, running_actions->offset);
170 action = xbt_swag_getNext(action, running_actions->offset)) {
171 value = lmm_variable_getvalue(VARIABLE(action));
173 value = action->remains / value;
176 DEBUG2("Updating min (value) with %p: %f",action, min);
179 if ((action->max_duration >= 0) && (action->max_duration < min)) {
180 min = action->max_duration;
181 DEBUG2("Updating min (duration) with %p: %f",action, min);
184 DEBUG1("min value : %f",min);
190 e_surf_action_state_t surf_action_get_state(surf_action_t action)
192 surf_action_state_t action_state =
193 &(action->resource_type->common_public->states);
195 if (action->state_set == action_state->ready_action_set)
196 return SURF_ACTION_READY;
197 if (action->state_set == action_state->running_action_set)
198 return SURF_ACTION_RUNNING;
199 if (action->state_set == action_state->failed_action_set)
200 return SURF_ACTION_FAILED;
201 if (action->state_set == action_state->done_action_set)
202 return SURF_ACTION_DONE;
203 return SURF_ACTION_NOT_IN_THE_SYSTEM;
206 double surf_action_get_start_time(surf_action_t action) {
207 return action->start;
210 double surf_action_get_finish_time(surf_action_t action) {
211 return action->finish;
214 void surf_action_free(surf_action_t * action)
216 (*action)->resource_type->common_public->action_cancel(*action);
221 void surf_action_change_state(surf_action_t action,
222 e_surf_action_state_t state)
224 surf_action_state_t action_state =
225 &(action->resource_type->common_public->states);
226 XBT_IN2("(%p,%s)", action, surf_action_state_names[state]);
227 xbt_swag_remove(action, action->state_set);
229 if (state == SURF_ACTION_READY)
230 action->state_set = action_state->ready_action_set;
231 else if (state == SURF_ACTION_RUNNING)
232 action->state_set = action_state->running_action_set;
233 else if (state == SURF_ACTION_FAILED)
234 action->state_set = action_state->failed_action_set;
235 else if (state == SURF_ACTION_DONE)
236 action->state_set = action_state->done_action_set;
238 action->state_set = NULL;
240 if (action->state_set)
241 xbt_swag_insert(action, action->state_set);
245 void surf_action_set_data(surf_action_t action,
251 void surf_init(int *argc, char **argv)
256 const char* initial_path;
258 xbt_init(argc, argv);
261 /* retrieves the current directory of the current process*/
262 initial_path = __surf_get_initial_path();
264 xbt_assert0((initial_path), "__surf_get_initial_path() failed! Can't resolves current Windows directory");
266 surf_path = xbt_dynar_new(sizeof(char*), NULL);
267 xbt_dynar_push(surf_path,&initial_path);
269 for (i=1; i<*argc; i++) {
270 if (!strncmp(argv[i],"--surf-path=",strlen("--surf-path="))) {
271 opt=strchr(argv[i],'=');
273 xbt_dynar_push(surf_path,&opt);
274 /*remove this from argv*/
275 for (j=i+1; j<*argc; j++) {
280 i--; /* compensate effect of next loop incrementation */
285 resource_list = xbt_dynar_new(sizeof(surf_resource_private_t), NULL);
287 history = tmgr_history_new();
289 maxmin_system = lmm_system_new();
292 static char* path_name = NULL;
293 FILE *surf_fopen(const char *name, const char *mode)
298 int path_name_len = 0; /* don't count '\0' */
300 xbt_assert0(name, "Need a non-NULL file name");
302 xbt_assert0(surf_path,"surf_init has to be called before using surf_fopen");
304 if (__surf_is_absolute_file_path(name)) { /* don't mess with absolute file names */
305 return fopen(name,mode);
307 } else { /* search relative files in the path */
310 path_name_len = strlen(name);
311 path_name=xbt_new0(char,path_name_len+1);
314 xbt_dynar_foreach(surf_path,i,path) {
315 if(path_name_len < strlen(path)+strlen(name)+1) {
316 path_name_len = strlen(path)+strlen(name)+1; /* plus '/' */
317 path_name=xbt_realloc(path_name,path_name_len+1);
319 sprintf(path_name,"%s/%s",path, name);
320 file = fopen(path_name,mode);
321 if (file) return file;
330 surf_resource_t resource = NULL;
332 xbt_dynar_foreach(resource_list, i, resource) {
333 resource->common_private->finalize();
337 lmm_system_free(maxmin_system);
338 maxmin_system = NULL;
341 tmgr_history_free(history);
345 xbt_dynar_free(&resource_list);
348 xbt_dynar_free(&surf_path);
351 surf_parse_lex_destroy();
359 double surf_solve(void)
361 static int first_run = 1;
364 double next_event_date = -1.0;
365 double resource_next_action_end = -1.0;
367 surf_resource_object_t resource_obj = NULL;
368 surf_resource_t resource = NULL;
369 tmgr_trace_event_t event = NULL;
373 DEBUG0("First Run! Let's \"purge\" events and put resources in the right state");
374 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
375 if (next_event_date > NOW)
378 tmgr_history_get_next_event_leq(history, next_event_date,
380 (void **) &resource_obj))) {
381 resource_obj->resource->common_private->
382 update_resource_state(resource_obj, event, value);
385 xbt_dynar_foreach(resource_list, i, resource) {
386 resource->common_private->update_actions_state(NOW, 0.0);
394 DEBUG0("Looking for next action end");
395 xbt_dynar_foreach(resource_list, i, resource) {
396 DEBUG1("Running for Resource [%s]",resource->common_public->name);
397 resource_next_action_end =
398 resource->common_private->share_resources(NOW);
399 DEBUG2("Resource [%s] : next action end = %f",resource->common_public->name,
400 resource_next_action_end);
401 if (((min < 0.0) || (resource_next_action_end < min))
402 && (resource_next_action_end >= 0.0))
403 min = resource_next_action_end;
405 DEBUG1("Next action end : %f", min);
410 DEBUG0("Looking for next event");
411 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
412 DEBUG1("Next event : %f",next_event_date);
413 if (next_event_date > NOW + min)
415 DEBUG0("Updating resources");
417 tmgr_history_get_next_event_leq(history, next_event_date,
419 (void **) &resource_obj))) {
420 if (resource_obj->resource->common_private->
421 resource_used(resource_obj)) {
422 min = next_event_date - NOW;
423 DEBUG1("This event will modify resource state. Next event set to %f", min);
425 /* update state of resource_obj according to new value. Does not touch lmm.
426 It will be modified if needed when updating actions */
427 resource_obj->resource->common_private->
428 update_resource_state(resource_obj, event, value);
432 DEBUG1("Duration set to %f", min);
436 xbt_dynar_foreach(resource_list, i, resource) {
437 resource->common_private->update_actions_state(NOW, min);
443 double surf_get_clock(void)