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. */
21 static const char* disk_drives_letter_table[MAX_DRIVE] =
52 * Returns the initial path. On Windows the initial path is
53 * the current directory for the current process in the other
54 * case the function returns "./" that represents the current
55 * directory on Unix/Linux platforms.
58 const char* __surf_get_initial_path()
63 char current_directory[MAX_PATH + 1] = {0};
64 unsigned int len = GetCurrentDirectory(MAX_PATH + 1,current_directory);
70 strncpy(root,current_directory,3);
72 for(i = 0; i<MAX_DRIVE;i++)
74 if(root[0] == disk_drives_letter_table[i][0])
75 return disk_drives_letter_table[i];
84 /* The __surf_is_absolute_file_path() returns 1 if
85 * file_path is a absolute file path, in the other
86 * case the function returns 0.
88 int __surf_is_absolute_file_path(const char* file_path)
91 WIN32_FIND_DATA wfd ={0};
92 HANDLE hFile = FindFirstFile(file_path,&wfd);
94 if(INVALID_HANDLE_VALUE == hFile)
100 return (file_path[0] == '/');
104 typedef struct surf_resource_object {
105 surf_resource_t resource;
106 } s_surf_resource_object_t, *surf_resource_object_t;
108 static double NOW = 0;
110 xbt_dynar_t resource_list = NULL;
111 tmgr_history_t history = NULL;
112 lmm_system_t maxmin_system = NULL;
113 xbt_dynar_t surf_path = NULL;
114 const char *surf_action_state_names[6] = {
116 "SURF_ACTION_RUNNING",
117 "SURF_ACTION_FAILED",
119 "SURF_ACTION_TO_FREE",
120 "SURF_ACTION_NOT_IN_THE_SYSTEM"
123 double generic_maxmin_share_resources(xbt_swag_t running_actions,
126 return generic_maxmin_share_resources2(running_actions, offset,
130 double generic_maxmin_share_resources2(xbt_swag_t running_actions,
134 surf_action_t action = NULL;
137 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
141 xbt_swag_foreach(action, running_actions) {
142 value = lmm_variable_getvalue(VARIABLE(action));
143 if ((value > 0) || (action->max_duration >= 0))
151 min = action->remains / value;
152 if ((action->max_duration >= 0) && (action->max_duration < min))
153 min = action->max_duration;
155 min = action->max_duration;
158 for (action = xbt_swag_getNext(action, running_actions->offset);
160 action = xbt_swag_getNext(action, running_actions->offset)) {
161 value = lmm_variable_getvalue(VARIABLE(action));
163 value = action->remains / value;
167 if ((action->max_duration >= 0) && (action->max_duration < min))
168 min = action->max_duration;
174 e_surf_action_state_t surf_action_get_state(surf_action_t action)
176 surf_action_state_t action_state =
177 &(action->resource_type->common_public->states);
179 if (action->state_set == action_state->ready_action_set)
180 return SURF_ACTION_READY;
181 if (action->state_set == action_state->running_action_set)
182 return SURF_ACTION_RUNNING;
183 if (action->state_set == action_state->failed_action_set)
184 return SURF_ACTION_FAILED;
185 if (action->state_set == action_state->done_action_set)
186 return SURF_ACTION_DONE;
187 return SURF_ACTION_NOT_IN_THE_SYSTEM;
190 double surf_action_get_start_time(surf_action_t action) {
191 return action->start;
194 double surf_action_get_finish_time(surf_action_t action) {
195 return action->finish;
198 void surf_action_free(surf_action_t * action)
200 (*action)->resource_type->common_public->action_cancel(*action);
205 void surf_action_change_state(surf_action_t action,
206 e_surf_action_state_t state)
208 surf_action_state_t action_state =
209 &(action->resource_type->common_public->states);
210 XBT_IN2("(%p,%s)", action, surf_action_state_names[state]);
211 xbt_swag_remove(action, action->state_set);
213 if (state == SURF_ACTION_READY)
214 action->state_set = action_state->ready_action_set;
215 else if (state == SURF_ACTION_RUNNING)
216 action->state_set = action_state->running_action_set;
217 else if (state == SURF_ACTION_FAILED)
218 action->state_set = action_state->failed_action_set;
219 else if (state == SURF_ACTION_DONE)
220 action->state_set = action_state->done_action_set;
222 action->state_set = NULL;
224 if (action->state_set)
225 xbt_swag_insert(action, action->state_set);
229 void surf_action_set_data(surf_action_t action,
235 void surf_init(int *argc, char **argv)
240 const char* initial_path;
242 xbt_init(argc, argv);
245 /* retrieves the current directory of the current process*/
246 initial_path = __surf_get_initial_path();
248 xbt_assert0((initial_path), "__surf_get_initial_path() failed! Can't resolves current Windows directory");
250 surf_path = xbt_dynar_new(sizeof(char*), NULL);
251 xbt_dynar_push(surf_path,&initial_path);
253 for (i=1; i<*argc; i++) {
254 if (!strncmp(argv[i],"--surf-path=",strlen("--surf-path="))) {
255 opt=strchr(argv[i],'=');
257 xbt_dynar_push(surf_path,&opt);
258 /*remove this from argv*/
259 for (j=i+1; j<*argc; j++) {
264 i--; /* compensate effect of next loop incrementation */
269 resource_list = xbt_dynar_new(sizeof(surf_resource_private_t), NULL);
271 history = tmgr_history_new();
273 maxmin_system = lmm_system_new();
276 static char* path_name = NULL;
277 FILE *surf_fopen(const char *name, const char *mode)
282 int path_name_len = 0; /* don't count '\0' */
284 xbt_assert0(name, "Need a non-NULL file name");
286 xbt_assert0(surf_path,"surf_init has to be called before using surf_fopen");
288 if (__surf_is_absolute_file_path(name)) { /* don't mess with absolute file names */
289 return fopen(name,mode);
291 } else { /* search relative files in the path */
294 path_name_len = strlen(name);
295 path_name=xbt_new0(char,path_name_len+1);
298 xbt_dynar_foreach(surf_path,i,path) {
299 if(path_name_len < strlen(path)+strlen(name)+1) {
300 path_name_len = strlen(path)+strlen(name)+1; /* plus '/' */
301 path_name=xbt_realloc(path_name,path_name_len+1);
303 sprintf(path_name,"%s/%s",path, name);
304 file = fopen(path_name,mode);
305 if (file) return file;
314 surf_resource_t resource = NULL;
316 xbt_dynar_foreach(resource_list, i, resource) {
317 resource->common_private->finalize();
321 lmm_system_free(maxmin_system);
322 maxmin_system = NULL;
325 tmgr_history_free(history);
329 xbt_dynar_free(&resource_list);
332 xbt_dynar_free(&surf_path);
335 surf_parse_lex_destroy();
343 double surf_solve(void)
345 static int first_run = 1;
348 double next_event_date = -1.0;
349 double resource_next_action_end = -1.0;
351 surf_resource_object_t resource_obj = NULL;
352 surf_resource_t resource = NULL;
353 tmgr_trace_event_t event = NULL;
357 DEBUG0("First Run! Let's \"purge\" events and put resources in the right state");
358 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
359 if (next_event_date > NOW)
362 tmgr_history_get_next_event_leq(history, next_event_date,
364 (void **) &resource_obj))) {
365 resource_obj->resource->common_private->
366 update_resource_state(resource_obj, event, value);
369 xbt_dynar_foreach(resource_list, i, resource) {
370 resource->common_private->update_actions_state(NOW, 0.0);
378 DEBUG0("Looking for next action end");
379 xbt_dynar_foreach(resource_list, i, resource) {
380 resource_next_action_end =
381 resource->common_private->share_resources(NOW);
382 DEBUG2("Resource [%s] : next action end = %f",resource->common_public->name,
383 resource_next_action_end);
384 if (((min < 0.0) || (resource_next_action_end < min))
385 && (resource_next_action_end >= 0.0))
386 min = resource_next_action_end;
388 DEBUG1("Next action end : %f", min);
393 DEBUG0("Looking for next event");
394 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
395 DEBUG1("Next event : %f",next_event_date);
396 if (next_event_date > NOW + min)
398 DEBUG0("Updating resources");
400 tmgr_history_get_next_event_leq(history, next_event_date,
402 (void **) &resource_obj))) {
403 if (resource_obj->resource->common_private->
404 resource_used(resource_obj)) {
405 min = next_event_date - NOW;
406 DEBUG1("This event will modify resource state. Next event set to %f", min);
408 /* update state of resource_obj according to new value. Does not touch lmm.
409 It will be modified if needed when updating actions */
410 resource_obj->resource->common_private->
411 update_resource_state(resource_obj, event, value);
415 DEBUG1("Duration set to %f", min);
419 xbt_dynar_foreach(resource_list, i, resource) {
420 resource->common_private->update_actions_state(NOW, min);
426 double surf_get_clock(void)