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)");
18 /* Additional declarations for Windows potability. */
26 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++)
80 if(toupper(root[0]) == disk_drives_letter_table[i][0])
81 return disk_drives_letter_table[i];
90 /* The __surf_is_absolute_file_path() returns 1 if
91 * file_path is a absolute file path, in the other
92 * case the function returns 0.
94 int __surf_is_absolute_file_path(const char* file_path)
97 WIN32_FIND_DATA wfd ={0};
98 HANDLE hFile = FindFirstFile(file_path,&wfd);
100 if(INVALID_HANDLE_VALUE == hFile)
106 return (file_path[0] == '/');
110 typedef struct surf_resource_object {
111 surf_resource_t resource;
112 } s_surf_resource_object_t, *surf_resource_object_t;
114 static double NOW = 0;
116 xbt_dynar_t resource_list = NULL;
117 tmgr_history_t history = NULL;
118 lmm_system_t maxmin_system = NULL;
119 xbt_dynar_t surf_path = NULL;
120 const char *surf_action_state_names[6] = {
122 "SURF_ACTION_RUNNING",
123 "SURF_ACTION_FAILED",
125 "SURF_ACTION_TO_FREE",
126 "SURF_ACTION_NOT_IN_THE_SYSTEM"
129 double generic_maxmin_share_resources(xbt_swag_t running_actions,
132 return generic_maxmin_share_resources2(running_actions, offset,
136 double generic_maxmin_share_resources2(xbt_swag_t running_actions,
140 surf_action_t action = NULL;
143 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
151 xbt_assert0(0, "No CSDP found! You cannot use this model!");
155 xbt_swag_foreach(action, running_actions) {
156 value = lmm_variable_getvalue(VARIABLE(action));
157 if ((value > 0) || (action->max_duration >= 0))
165 min = action->remains / value;
166 if ((action->max_duration >= 0) && (action->max_duration < min))
167 min = action->max_duration;
169 min = action->max_duration;
171 DEBUG5("Found an action (%p: duration = %f, remains = %f, value = %f) ! %f",action, action->max_duration, action->remains, value, min);
173 for (action = xbt_swag_getNext(action, running_actions->offset);
175 action = xbt_swag_getNext(action, running_actions->offset)) {
176 value = lmm_variable_getvalue(VARIABLE(action));
178 value = action->remains / value;
181 DEBUG2("Updating min (value) with %p: %f",action, min);
184 if ((action->max_duration >= 0) && (action->max_duration < min)) {
185 min = action->max_duration;
186 DEBUG2("Updating min (duration) with %p: %f",action, min);
189 DEBUG1("min value : %f",min);
195 e_surf_action_state_t surf_action_get_state(surf_action_t action)
197 surf_action_state_t action_state =
198 &(action->resource_type->common_public->states);
200 if (action->state_set == action_state->ready_action_set)
201 return SURF_ACTION_READY;
202 if (action->state_set == action_state->running_action_set)
203 return SURF_ACTION_RUNNING;
204 if (action->state_set == action_state->failed_action_set)
205 return SURF_ACTION_FAILED;
206 if (action->state_set == action_state->done_action_set)
207 return SURF_ACTION_DONE;
208 return SURF_ACTION_NOT_IN_THE_SYSTEM;
211 double surf_action_get_start_time(surf_action_t action) {
212 return action->start;
215 double surf_action_get_finish_time(surf_action_t action) {
216 return action->finish;
219 void surf_action_free(surf_action_t * action)
221 (*action)->resource_type->common_public->action_cancel(*action);
226 void surf_action_change_state(surf_action_t action,
227 e_surf_action_state_t state)
229 surf_action_state_t action_state =
230 &(action->resource_type->common_public->states);
231 XBT_IN2("(%p,%s)", action, surf_action_state_names[state]);
232 xbt_swag_remove(action, action->state_set);
234 if (state == SURF_ACTION_READY)
235 action->state_set = action_state->ready_action_set;
236 else if (state == SURF_ACTION_RUNNING)
237 action->state_set = action_state->running_action_set;
238 else if (state == SURF_ACTION_FAILED)
239 action->state_set = action_state->failed_action_set;
240 else if (state == SURF_ACTION_DONE)
241 action->state_set = action_state->done_action_set;
243 action->state_set = NULL;
245 if (action->state_set)
246 xbt_swag_insert(action, action->state_set);
250 void surf_action_set_data(surf_action_t action,
256 void surf_init(int *argc, char **argv)
261 const char* initial_path;
263 xbt_init(argc, argv);
266 /* retrieves the current directory of the current process*/
267 initial_path = __surf_get_initial_path();
269 xbt_assert0((initial_path), "__surf_get_initial_path() failed! Can't resolves current Windows directory");
271 surf_path = xbt_dynar_new(sizeof(char*), NULL);
272 xbt_dynar_push(surf_path,&initial_path);
274 for (i=1; i<*argc; i++) {
275 if (!strncmp(argv[i],"--surf-path=",strlen("--surf-path="))) {
276 opt=strchr(argv[i],'=');
278 xbt_dynar_push(surf_path,&opt);
279 /*remove this from argv*/
280 for (j=i+1; j<*argc; j++) {
285 i--; /* compensate effect of next loop incrementation */
290 resource_list = xbt_dynar_new(sizeof(surf_resource_private_t), NULL);
292 history = tmgr_history_new();
294 maxmin_system = lmm_system_new();
297 static char* path_name = NULL;
298 FILE *surf_fopen(const char *name, const char *mode)
303 int path_name_len = 0; /* don't count '\0' */
305 xbt_assert0(name, "Need a non-NULL file name");
307 xbt_assert0(surf_path,"surf_init has to be called before using surf_fopen");
309 if (__surf_is_absolute_file_path(name)) { /* don't mess with absolute file names */
310 return fopen(name,mode);
312 } else { /* search relative files in the path */
315 path_name_len = strlen(name);
316 path_name=xbt_new0(char,path_name_len+1);
319 xbt_dynar_foreach(surf_path,i,path) {
320 if(path_name_len < strlen(path)+strlen(name)+1) {
321 path_name_len = strlen(path)+strlen(name)+1; /* plus '/' */
322 path_name=xbt_realloc(path_name,path_name_len+1);
324 sprintf(path_name,"%s/%s",path, name);
325 file = fopen(path_name,mode);
326 if (file) return file;
335 surf_resource_t resource = NULL;
337 xbt_dynar_foreach(resource_list, i, resource) {
338 resource->common_private->finalize();
342 lmm_system_free(maxmin_system);
343 maxmin_system = NULL;
346 tmgr_history_free(history);
350 xbt_dynar_free(&resource_list);
353 xbt_dynar_free(&surf_path);
356 surf_parse_lex_destroy();
364 double surf_solve(void)
366 static int first_run = 1;
369 double next_event_date = -1.0;
370 double resource_next_action_end = -1.0;
372 surf_resource_object_t resource_obj = NULL;
373 surf_resource_t resource = NULL;
374 tmgr_trace_event_t event = NULL;
378 DEBUG0("First Run! Let's \"purge\" events and put resources in the right state");
379 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
380 if (next_event_date > NOW)
383 tmgr_history_get_next_event_leq(history, next_event_date,
385 (void **) &resource_obj))) {
386 resource_obj->resource->common_private->
387 update_resource_state(resource_obj, event, value);
390 xbt_dynar_foreach(resource_list, i, resource) {
391 resource->common_private->update_actions_state(NOW, 0.0);
399 DEBUG0("Looking for next action end");
400 xbt_dynar_foreach(resource_list, i, resource) {
401 resource_next_action_end =
402 resource->common_private->share_resources(NOW);
403 DEBUG2("Resource [%s] : next action end = %f",resource->common_public->name,
404 resource_next_action_end);
405 if (((min < 0.0) || (resource_next_action_end < min))
406 && (resource_next_action_end >= 0.0))
407 min = resource_next_action_end;
409 DEBUG1("Next action end : %f", min);
414 DEBUG0("Looking for next event");
415 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
416 DEBUG1("Next event : %f",next_event_date);
417 if (next_event_date > NOW + min)
419 DEBUG0("Updating resources");
421 tmgr_history_get_next_event_leq(history, next_event_date,
423 (void **) &resource_obj))) {
424 if (resource_obj->resource->common_private->
425 resource_used(resource_obj)) {
426 min = next_event_date - NOW;
427 DEBUG1("This event will modify resource state. Next event set to %f", min);
429 /* update state of resource_obj according to new value. Does not touch lmm.
430 It will be modified if needed when updating actions */
431 resource_obj->resource->common_private->
432 update_resource_state(resource_obj, event, value);
436 DEBUG1("Duration set to %f", min);
440 xbt_dynar_foreach(resource_list, i, resource) {
441 resource->common_private->update_actions_state(NOW, min);
447 double surf_get_clock(void)