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)");
15 /* Additional declarations for Windows potability. */
22 static const char* disk_drives_letter_table[MAX_DRIVE] =
51 #endif /* #ifdef _WIN32 */
54 * Returns the initial path. On Windows the initial path is
55 * the current directory for the current process in the other
56 * case the function returns "./" that represents the current
57 * directory on Unix/Linux platforms.
60 const char* __surf_get_initial_path(void)
65 char current_directory[MAX_PATH + 1] = {0};
66 unsigned int len = GetCurrentDirectory(MAX_PATH + 1,current_directory);
72 strncpy(root,current_directory,3);
74 for(i = 0; i<MAX_DRIVE;i++)
76 if(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 typedef struct surf_resource_object {
107 surf_resource_t resource;
108 } s_surf_resource_object_t, *surf_resource_object_t;
110 static double NOW = 0;
112 xbt_dynar_t resource_list = NULL;
113 tmgr_history_t history = NULL;
114 lmm_system_t maxmin_system = NULL;
115 xbt_dynar_t surf_path = NULL;
116 const char *surf_action_state_names[6] = {
118 "SURF_ACTION_RUNNING",
119 "SURF_ACTION_FAILED",
121 "SURF_ACTION_TO_FREE",
122 "SURF_ACTION_NOT_IN_THE_SYSTEM"
125 double generic_maxmin_share_resources(xbt_swag_t running_actions,
128 return generic_maxmin_share_resources2(running_actions, offset,
132 double generic_maxmin_share_resources2(xbt_swag_t running_actions,
136 surf_action_t action = NULL;
139 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
143 xbt_swag_foreach(action, running_actions) {
144 value = lmm_variable_getvalue(VARIABLE(action));
145 if ((value > 0) || (action->max_duration >= 0))
153 min = action->remains / value;
154 if ((action->max_duration >= 0) && (action->max_duration < min))
155 min = action->max_duration;
157 min = action->max_duration;
160 for (action = xbt_swag_getNext(action, running_actions->offset);
162 action = xbt_swag_getNext(action, running_actions->offset)) {
163 value = lmm_variable_getvalue(VARIABLE(action));
165 value = action->remains / value;
169 if ((action->max_duration >= 0) && (action->max_duration < min))
170 min = action->max_duration;
176 e_surf_action_state_t surf_action_get_state(surf_action_t action)
178 surf_action_state_t action_state =
179 &(action->resource_type->common_public->states);
181 if (action->state_set == action_state->ready_action_set)
182 return SURF_ACTION_READY;
183 if (action->state_set == action_state->running_action_set)
184 return SURF_ACTION_RUNNING;
185 if (action->state_set == action_state->failed_action_set)
186 return SURF_ACTION_FAILED;
187 if (action->state_set == action_state->done_action_set)
188 return SURF_ACTION_DONE;
189 return SURF_ACTION_NOT_IN_THE_SYSTEM;
192 double surf_action_get_start_time(surf_action_t action) {
193 return action->start;
196 double surf_action_get_finish_time(surf_action_t action) {
197 return action->finish;
200 void surf_action_free(surf_action_t * action)
202 (*action)->resource_type->common_public->action_cancel(*action);
207 void surf_action_change_state(surf_action_t action,
208 e_surf_action_state_t state)
210 surf_action_state_t action_state =
211 &(action->resource_type->common_public->states);
212 XBT_IN2("(%p,%s)", action, surf_action_state_names[state]);
213 xbt_swag_remove(action, action->state_set);
215 if (state == SURF_ACTION_READY)
216 action->state_set = action_state->ready_action_set;
217 else if (state == SURF_ACTION_RUNNING)
218 action->state_set = action_state->running_action_set;
219 else if (state == SURF_ACTION_FAILED)
220 action->state_set = action_state->failed_action_set;
221 else if (state == SURF_ACTION_DONE)
222 action->state_set = action_state->done_action_set;
224 action->state_set = NULL;
226 if (action->state_set)
227 xbt_swag_insert(action, action->state_set);
231 void surf_action_set_data(surf_action_t action,
237 void surf_init(int *argc, char **argv)
242 const char* initial_path;
244 xbt_init(argc, argv);
247 /* retrieves the current directory of the current process*/
248 initial_path = __surf_get_initial_path();
250 xbt_assert0((initial_path), "__surf_get_initial_path() failed! Can't resolves current Windows directory");
252 surf_path = xbt_dynar_new(sizeof(char*), NULL);
253 xbt_dynar_push(surf_path,&initial_path);
255 for (i=1; i<*argc; i++) {
256 if (!strncmp(argv[i],"--surf-path=",strlen("--surf-path="))) {
257 opt=strchr(argv[i],'=');
259 xbt_dynar_push(surf_path,&opt);
260 /*remove this from argv*/
261 for (j=i+1; j<*argc; j++) {
266 i--; /* compensate effect of next loop incrementation */
271 resource_list = xbt_dynar_new(sizeof(surf_resource_private_t), NULL);
273 history = tmgr_history_new();
275 maxmin_system = lmm_system_new();
278 static char* path_name = NULL;
279 FILE *surf_fopen(const char *name, const char *mode)
284 int path_name_len = 0; /* don't count '\0' */
286 xbt_assert0(name, "Need a non-NULL file name");
288 xbt_assert0(surf_path,"surf_init has to be called before using surf_fopen");
290 if (__surf_is_absolute_file_path(name)) { /* don't mess with absolute file names */
291 return fopen(name,mode);
293 } else { /* search relative files in the path */
296 path_name_len = strlen(name);
297 path_name=xbt_new0(char,path_name_len+1);
300 xbt_dynar_foreach(surf_path,i,path) {
301 if(path_name_len < strlen(path)+strlen(name)+1) {
302 path_name_len = strlen(path)+strlen(name)+1; /* plus '/' */
303 path_name=xbt_realloc(path_name,path_name_len+1);
305 sprintf(path_name,"%s/%s",path, name);
306 file = fopen(path_name,mode);
307 if (file) return file;
316 surf_resource_t resource = NULL;
318 xbt_dynar_foreach(resource_list, i, resource) {
319 resource->common_private->finalize();
323 lmm_system_free(maxmin_system);
324 maxmin_system = NULL;
327 tmgr_history_free(history);
331 xbt_dynar_free(&resource_list);
334 xbt_dynar_free(&surf_path);
337 surf_parse_lex_destroy();
345 double surf_solve(void)
347 static int first_run = 1;
350 double next_event_date = -1.0;
351 double resource_next_action_end = -1.0;
353 surf_resource_object_t resource_obj = NULL;
354 surf_resource_t resource = NULL;
355 tmgr_trace_event_t event = NULL;
359 DEBUG0("First Run! Let's \"purge\" events and put resources in the right state");
360 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
361 if (next_event_date > NOW)
364 tmgr_history_get_next_event_leq(history, next_event_date,
366 (void **) &resource_obj))) {
367 resource_obj->resource->common_private->
368 update_resource_state(resource_obj, event, value);
371 xbt_dynar_foreach(resource_list, i, resource) {
372 resource->common_private->update_actions_state(NOW, 0.0);
380 DEBUG0("Looking for next action end");
381 xbt_dynar_foreach(resource_list, i, resource) {
382 resource_next_action_end =
383 resource->common_private->share_resources(NOW);
384 DEBUG2("Resource [%s] : next action end = %f",resource->common_public->name,
385 resource_next_action_end);
386 if (((min < 0.0) || (resource_next_action_end < min))
387 && (resource_next_action_end >= 0.0))
388 min = resource_next_action_end;
390 DEBUG1("Next action end : %f", min);
395 DEBUG0("Looking for next event");
396 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
397 DEBUG1("Next event : %f",next_event_date);
398 if (next_event_date > NOW + min)
400 DEBUG0("Updating resources");
402 tmgr_history_get_next_event_leq(history, next_event_date,
404 (void **) &resource_obj))) {
405 if (resource_obj->resource->common_private->
406 resource_used(resource_obj)) {
407 min = next_event_date - NOW;
408 DEBUG1("This event will modify resource state. Next event set to %f", min);
410 /* update state of resource_obj according to new value. Does not touch lmm.
411 It will be modified if needed when updating actions */
412 resource_obj->resource->common_private->
413 update_resource_state(resource_obj, event, value);
417 DEBUG1("Duration set to %f", min);
421 xbt_dynar_foreach(resource_list, i, resource) {
422 resource->common_private->update_actions_state(NOW, min);
428 double surf_get_clock(void)