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 int surf_network_resource_description_size=3
138 s_surf_resource_description_t surf_network_resource_description[]=
140 {"CM02",NULL,surf_network_resource_init_CM02},
142 {"GTNets",NULL,surf_network_resource_init_GTNETS},
145 {"SDP",NULL,surf_network_resource_init_SDP},
147 {"Reno",NULL,surf_network_resource_init_Reno},
148 {"Vegas",NULL,surf_network_resource_init_Vegas}
151 int surf_cpu_resource_description_size=1;
152 s_surf_resource_description_t surf_cpu_resource_description[]=
154 {"Cas01",NULL,surf_cpu_resource_init_Cas01},
157 int surf_workstation_resource_description_size=3;
158 s_surf_resource_description_t surf_workstation_resource_description[]=
160 {"CLM03",NULL,surf_workstation_resource_init_CLM03},
161 {"KCCFLN05",NULL,surf_workstation_resource_init_KCCFLN05},
162 {"compound",NULL,surf_workstation_resource_init_compound}
165 void update_resource_description(s_surf_resource_description_t *table,
168 surf_resource_t resource
171 int i = find_resource_description(table, table_size, name);
172 table[i].resource=resource;
175 int find_resource_description(s_surf_resource_description_t *table,
180 char *name_list=NULL;
182 for(i=0;i<table_size;i++)
183 if(!strcmp(name,table[i].name)) {
186 name_list=strdup(table[0].name);
187 for(i=1;i<table_size;i++) {
188 name_list = xbt_realloc(name_list,strlen(name_list)+strlen(table[i].name)+2);
189 strcat(name_list,", ");
190 strcat(name_list,table[i].name);
192 xbt_assert2(0, "Model '%s' is invalid! Valid models are: %s.",name,name_list);
195 double generic_maxmin_share_resources(xbt_swag_t running_actions,
198 return generic_maxmin_share_resources2(running_actions, offset,
199 maxmin_system, lmm_solve);
202 double generic_maxmin_share_resources2(xbt_swag_t running_actions,
205 void (*solve)(lmm_system_t))
207 surf_action_t action = NULL;
210 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
212 xbt_assert0(solve,"Give me a real solver function!");
215 xbt_swag_foreach(action, running_actions) {
216 value = lmm_variable_getvalue(VARIABLE(action));
217 if ((value > 0) || (action->max_duration >= 0))
225 min = action->remains / value;
226 if ((action->max_duration >= 0) && (action->max_duration < min))
227 min = action->max_duration;
229 min = action->max_duration;
231 DEBUG5("Found an action (%p: duration = %f, remains = %f, value = %f) ! %f",action, action->max_duration, action->remains, value, min);
233 for (action = xbt_swag_getNext(action, running_actions->offset);
235 action = xbt_swag_getNext(action, running_actions->offset)) {
236 value = lmm_variable_getvalue(VARIABLE(action));
238 value = action->remains / value;
241 DEBUG2("Updating min (value) with %p: %f",action, min);
244 if ((action->max_duration >= 0) && (action->max_duration < min)) {
245 min = action->max_duration;
246 DEBUG2("Updating min (duration) with %p: %f",action, min);
249 DEBUG1("min value : %f",min);
255 e_surf_action_state_t surf_action_get_state(surf_action_t action)
257 surf_action_state_t action_state =
258 &(action->resource_type->common_public->states);
260 if (action->state_set == action_state->ready_action_set)
261 return SURF_ACTION_READY;
262 if (action->state_set == action_state->running_action_set)
263 return SURF_ACTION_RUNNING;
264 if (action->state_set == action_state->failed_action_set)
265 return SURF_ACTION_FAILED;
266 if (action->state_set == action_state->done_action_set)
267 return SURF_ACTION_DONE;
268 return SURF_ACTION_NOT_IN_THE_SYSTEM;
271 double surf_action_get_start_time(surf_action_t action) {
272 return action->start;
275 double surf_action_get_finish_time(surf_action_t action) {
276 return action->finish;
279 void surf_action_free(surf_action_t * action)
281 (*action)->resource_type->common_public->action_cancel(*action);
286 void surf_action_change_state(surf_action_t action,
287 e_surf_action_state_t state)
289 surf_action_state_t action_state =
290 &(action->resource_type->common_public->states);
291 XBT_IN2("(%p,%s)", action, surf_action_state_names[state]);
292 xbt_swag_remove(action, action->state_set);
294 if (state == SURF_ACTION_READY)
295 action->state_set = action_state->ready_action_set;
296 else if (state == SURF_ACTION_RUNNING)
297 action->state_set = action_state->running_action_set;
298 else if (state == SURF_ACTION_FAILED)
299 action->state_set = action_state->failed_action_set;
300 else if (state == SURF_ACTION_DONE)
301 action->state_set = action_state->done_action_set;
303 action->state_set = NULL;
305 if (action->state_set)
306 xbt_swag_insert(action, action->state_set);
310 void surf_action_set_data(surf_action_t action,
316 void surf_init(int *argc, char **argv)
321 const char* initial_path;
323 xbt_init(argc, argv);
326 /* retrieves the current directory of the current process*/
327 initial_path = __surf_get_initial_path();
329 xbt_assert0((initial_path), "__surf_get_initial_path() failed! Can't resolves current Windows directory");
331 surf_path = xbt_dynar_new(sizeof(char*), NULL);
332 xbt_dynar_push(surf_path,&initial_path);
334 for (i=1; i<*argc; i++) {
335 if (!strncmp(argv[i],"--surf-path=",strlen("--surf-path="))) {
336 opt=strchr(argv[i],'=');
338 xbt_dynar_push(surf_path,&opt);
339 /*remove this from argv*/
340 for (j=i+1; j<*argc; j++) {
345 i--; /* compensate effect of next loop incrementation */
350 resource_list = xbt_dynar_new(sizeof(surf_resource_private_t), NULL);
352 history = tmgr_history_new();
354 maxmin_system = lmm_system_new();
357 static char* path_name = NULL;
358 FILE *surf_fopen(const char *name, const char *mode)
363 int path_name_len = 0; /* don't count '\0' */
365 xbt_assert0(name, "Need a non-NULL file name");
367 xbt_assert0(surf_path,"surf_init has to be called before using surf_fopen");
369 if (__surf_is_absolute_file_path(name)) { /* don't mess with absolute file names */
370 return fopen(name,mode);
372 } else { /* search relative files in the path */
375 path_name_len = strlen(name);
376 path_name=xbt_new0(char,path_name_len+1);
379 xbt_dynar_foreach(surf_path,i,path) {
380 if(path_name_len < strlen(path)+strlen(name)+1) {
381 path_name_len = strlen(path)+strlen(name)+1; /* plus '/' */
382 path_name=xbt_realloc(path_name,path_name_len+1);
384 sprintf(path_name,"%s/%s",path, name);
385 file = fopen(path_name,mode);
386 if (file) return file;
395 surf_resource_t resource = NULL;
397 xbt_dynar_foreach(resource_list, i, resource) {
398 resource->common_private->finalize();
402 lmm_system_free(maxmin_system);
403 maxmin_system = NULL;
406 tmgr_history_free(history);
410 xbt_dynar_free(&resource_list);
413 xbt_dynar_free(&surf_path);
416 surf_parse_lex_destroy();
424 double surf_solve(void)
426 static int first_run = 1;
429 double next_event_date = -1.0;
430 double resource_next_action_end = -1.0;
432 surf_resource_object_t resource_obj = NULL;
433 surf_resource_t resource = NULL;
434 tmgr_trace_event_t event = NULL;
438 DEBUG0("First Run! Let's \"purge\" events and put resources in the right state");
439 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
440 if (next_event_date > NOW)
443 tmgr_history_get_next_event_leq(history, next_event_date,
445 (void **) &resource_obj))) {
446 resource_obj->resource->common_private->
447 update_resource_state(resource_obj, event, value);
450 xbt_dynar_foreach(resource_list, i, resource) {
451 resource->common_private->update_actions_state(NOW, 0.0);
459 DEBUG0("Looking for next action end");
460 xbt_dynar_foreach(resource_list, i, resource) {
461 DEBUG1("Running for Resource [%s]",resource->common_public->name);
462 resource_next_action_end =
463 resource->common_private->share_resources(NOW);
464 DEBUG2("Resource [%s] : next action end = %f",resource->common_public->name,
465 resource_next_action_end);
466 if (((min < 0.0) || (resource_next_action_end < min))
467 && (resource_next_action_end >= 0.0))
468 min = resource_next_action_end;
470 DEBUG1("Next action end : %f", min);
475 DEBUG0("Looking for next event");
476 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
477 DEBUG1("Next event : %f",next_event_date);
478 if (next_event_date > NOW + min)
480 DEBUG0("Updating resources");
482 tmgr_history_get_next_event_leq(history, next_event_date,
484 (void **) &resource_obj))) {
485 if (resource_obj->resource->common_private->
486 resource_used(resource_obj)) {
487 min = next_event_date - NOW;
488 DEBUG1("This event will modify resource state. Next event set to %f", min);
490 /* update state of resource_obj according to new value. Does not touch lmm.
491 It will be modified if needed when updating actions */
492 resource_obj->resource->common_private->
493 update_resource_state(resource_obj, event, value);
497 DEBUG1("Duration set to %f", min);
501 xbt_dynar_foreach(resource_list, i, resource) {
502 resource->common_private->update_actions_state(NOW, min);
508 double surf_get_clock(void)