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Remove the surf_*_model_description_size constants. They were hard to compute when...
[simgrid.git] / src / surf / surf.c
1 /*      $Id$     */
2
3 /* Copyright (c) 2004 Arnaud Legrand. All rights reserved.                  */
4
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. */
7
8 #include <ctype.h>
9
10 #include "surf_private.h"
11 #include "xbt/module.h"
12
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_kernel, surf,
14                                 "Logging specific to SURF (kernel)");
15
16 int use_sdp_solver = 0;
17 int use_lagrange_solver = 0;
18
19 /* Additional declarations for Windows potability. */
20
21 #ifndef MAX_DRIVE
22 #define MAX_DRIVE 26
23 #endif
24
25 #ifdef _WIN32
26 #include <windows.h>
27 static const char *disk_drives_letter_table[MAX_DRIVE] = {
28   "A:\\",
29   "B:\\",
30   "C:\\",
31   "D:\\",
32   "E:\\",
33   "F:\\",
34   "G:\\",
35   "H:\\",
36   "I:\\",
37   "J:\\",
38   "K:\\",
39   "L:\\",
40   "M:\\",
41   "N:\\",
42   "O:\\",
43   "P:\\",
44   "Q:\\",
45   "R:\\",
46   "S:\\",
47   "T:\\",
48   "U:\\",
49   "V:\\",
50   "W:\\",
51   "X:\\",
52   "Y:\\",
53   "Z:\\"
54 };
55 #endif                          /* #ifdef _WIN32 */
56
57 /*
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.
62  */
63
64 const char *__surf_get_initial_path(void)
65 {
66
67 #ifdef _WIN32
68   unsigned i;
69   char current_directory[MAX_PATH + 1] = { 0 };
70   unsigned int len = GetCurrentDirectory(MAX_PATH + 1, current_directory);
71   char root[4] = { 0 };
72
73   if (!len)
74     return NULL;
75
76   strncpy(root, current_directory, 3);
77
78   for (i = 0; i < MAX_DRIVE; i++) {
79     if (toupper(root[0]) == disk_drives_letter_table[i][0])
80       return disk_drives_letter_table[i];
81   }
82
83   return NULL;
84 #else
85   return "./";
86 #endif
87 }
88
89 /* The __surf_is_absolute_file_path() returns 1 if
90  * file_path is a absolute file path, in the other
91  * case the function returns 0.
92  */
93 int __surf_is_absolute_file_path(const char *file_path)
94 {
95 #ifdef _WIN32
96   WIN32_FIND_DATA wfd = { 0 };
97   HANDLE hFile = FindFirstFile(file_path, &wfd);
98
99   if (INVALID_HANDLE_VALUE == hFile)
100     return 0;
101
102   FindClose(hFile);
103   return 1;
104 #else
105   return (file_path[0] == '/');
106 #endif
107 }
108
109 typedef struct surf_model_object {
110   surf_model_t model;
111 } s_surf_model_object_t, *surf_model_object_t;
112
113 static double NOW = 0;
114
115 xbt_dynar_t model_list = NULL;
116 tmgr_history_t history = NULL;
117 lmm_system_t maxmin_system = NULL;
118 xbt_dynar_t surf_path = NULL;
119 const char *surf_action_state_names[6] = {
120   "SURF_ACTION_READY",
121   "SURF_ACTION_RUNNING",
122   "SURF_ACTION_FAILED",
123   "SURF_ACTION_DONE",
124   "SURF_ACTION_TO_FREE",
125   "SURF_ACTION_NOT_IN_THE_SYSTEM"
126 };
127
128
129 s_surf_model_description_t surf_network_model_description[] = {
130   {"Constant", NULL, surf_network_model_init_Constant},
131   {"CM02", NULL, surf_network_model_init_CM02},
132 #ifdef HAVE_GTNETS
133   {"GTNets", NULL, surf_network_model_init_GTNETS},
134 #endif
135 #ifdef HAVE_SDP
136   {"SDP", NULL, surf_network_model_init_SDP},
137 #endif
138   {"Reno", NULL, surf_network_model_init_Reno},
139   {"Reno2", NULL, surf_network_model_init_Reno2},
140   {"Vegas", NULL, surf_network_model_init_Vegas},
141   { NULL,NULL,NULL} /* this array must be NULL terminated */
142 };
143
144 s_surf_model_description_t surf_cpu_model_description[] = {
145   {"Cas01", NULL, surf_cpu_model_init_Cas01},
146   { NULL,NULL,NULL} /* this array must be NULL terminated */
147 };
148
149 s_surf_model_description_t surf_workstation_model_description[] = {
150   {"CLM03", NULL, surf_workstation_model_init_CLM03, create_workstations},
151   {"compound", NULL, surf_workstation_model_init_compound, create_workstations},
152   {"ptask_L07", NULL, surf_workstation_model_init_ptask_L07, NULL},
153   { NULL,NULL,NULL} /* this array must be NULL terminated */
154 };
155
156 void update_model_description(s_surf_model_description_t * table,
157                               const char *name,
158                               surf_model_t model)
159 {
160   int i = find_model_description(table, name);
161   table[i].model = model;
162 }
163
164 int find_model_description(s_surf_model_description_t * table,
165                            const char *name)
166 {
167   int i;
168   char *name_list = NULL;
169
170   for (i = 0; table[i].name; i++)
171     if (!strcmp(name, table[i].name)) {
172       return i;
173     }
174   name_list = strdup(table[0].name);
175   for (i = 1; table[i].name; i++) {
176     name_list =
177         xbt_realloc(name_list,
178                     strlen(name_list) + strlen(table[i].name) + 2);
179     strcat(name_list, ", ");
180     strcat(name_list, table[i].name);
181   }
182   xbt_assert2(0, "Model '%s' is invalid! Valid models are: %s.", name,
183               name_list);
184 }
185
186 double generic_maxmin_share_resources(xbt_swag_t running_actions,
187                                       size_t offset,
188                                       lmm_system_t sys,
189                                       void (*solve) (lmm_system_t))
190 {
191   surf_action_t action = NULL;
192   double min = -1;
193   double value = -1;
194 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
195
196   xbt_assert0(solve, "Give me a real solver function!");
197   solve(sys);
198
199   xbt_swag_foreach(action, running_actions) {
200     value = lmm_variable_getvalue(VARIABLE(action));
201     if ((value > 0) || (action->max_duration >= 0))
202       break;
203   }
204
205   if (!action)
206     return -1.0;
207
208   if (value > 0) {
209     if(action->remains>0) 
210       min = action->remains / value;
211     else 
212       min = 0.0;
213     if ((action->max_duration >= 0) && (action->max_duration < min))
214       min = action->max_duration;
215   } else
216     min = action->max_duration;
217
218
219   for (action = xbt_swag_getNext(action, running_actions->offset);
220        action;
221        action = xbt_swag_getNext(action, running_actions->offset)) {
222     value = lmm_variable_getvalue(VARIABLE(action));
223     if (value > 0) {
224       if(action->remains>0) 
225         value = action->remains / value;
226       else 
227         value = 0.0;
228       if (value < min) {
229         min = value;
230         DEBUG2("Updating min (value) with %p: %f", action, min);
231       }
232     }
233     if ((action->max_duration >= 0) && (action->max_duration < min)) {
234       min = action->max_duration;
235       DEBUG2("Updating min (duration) with %p: %f", action, min);
236     }
237   }
238   DEBUG1("min value : %f", min);
239
240 #undef VARIABLE
241   return min;
242 }
243
244 e_surf_action_state_t surf_action_get_state(surf_action_t action)
245 {
246   surf_action_state_t action_state =
247       &(action->model_type->common_public->states);
248
249   if (action->state_set == action_state->ready_action_set)
250     return SURF_ACTION_READY;
251   if (action->state_set == action_state->running_action_set)
252     return SURF_ACTION_RUNNING;
253   if (action->state_set == action_state->failed_action_set)
254     return SURF_ACTION_FAILED;
255   if (action->state_set == action_state->done_action_set)
256     return SURF_ACTION_DONE;
257   return SURF_ACTION_NOT_IN_THE_SYSTEM;
258 }
259
260 double surf_action_get_start_time(surf_action_t action)
261 {
262   return action->start;
263 }
264
265 double surf_action_get_finish_time(surf_action_t action)
266 {
267   return action->finish;
268 }
269
270 void surf_action_free(surf_action_t * action)
271 {
272   (*action)->model_type->common_public->action_cancel(*action);
273   free(*action);
274   *action = NULL;
275 }
276
277 void surf_action_change_state(surf_action_t action,
278                               e_surf_action_state_t state)
279 {
280   surf_action_state_t action_state =
281       &(action->model_type->common_public->states);
282   XBT_IN2("(%p,%s)", action, surf_action_state_names[state]);
283   xbt_swag_remove(action, action->state_set);
284
285   if (state == SURF_ACTION_READY)
286     action->state_set = action_state->ready_action_set;
287   else if (state == SURF_ACTION_RUNNING)
288     action->state_set = action_state->running_action_set;
289   else if (state == SURF_ACTION_FAILED)
290     action->state_set = action_state->failed_action_set;
291   else if (state == SURF_ACTION_DONE)
292     action->state_set = action_state->done_action_set;
293   else
294     action->state_set = NULL;
295
296   if (action->state_set)
297     xbt_swag_insert(action, action->state_set);
298   XBT_OUT;
299 }
300
301 void surf_action_set_data(surf_action_t action, void *data)
302 {
303   action->data = data;
304 }
305
306 XBT_LOG_EXTERNAL_CATEGORY(surf_cpu);
307 XBT_LOG_EXTERNAL_CATEGORY(surf_kernel);
308 XBT_LOG_EXTERNAL_CATEGORY(surf_lagrange);
309 XBT_LOG_EXTERNAL_CATEGORY(surf_lagrange_dichotomy);
310 XBT_LOG_EXTERNAL_CATEGORY(surf_maxmin);
311 XBT_LOG_EXTERNAL_CATEGORY(surf_network);
312 XBT_LOG_EXTERNAL_CATEGORY(surf_parse);
313 XBT_LOG_EXTERNAL_CATEGORY(surf_timer);
314 XBT_LOG_EXTERNAL_CATEGORY(surf_workstation);
315
316 #ifdef HAVE_SDP
317   XBT_LOG_EXTERNAL_CATEGORY(surf_sdp_out);
318   XBT_LOG_EXTERNAL_CATEGORY(surf_sdp);
319 #endif
320 #ifdef HAVE_GTNETS
321   XBT_LOG_EXTERNAL_CATEGORY(surf_network_gtnets);
322 #endif
323
324 void surf_init(int *argc, char **argv)
325 {
326   int i, j;
327   char *opt;
328
329   const char *initial_path;
330
331   /* Connect our log channels: that must be done manually under windows */
332   XBT_LOG_CONNECT(surf_cpu, surf);
333   XBT_LOG_CONNECT(surf_kernel, surf);
334   XBT_LOG_CONNECT(surf_lagrange, surf);
335     XBT_LOG_CONNECT(surf_lagrange_dichotomy, surf_lagrange);
336   XBT_LOG_CONNECT(surf_maxmin, surf);
337   XBT_LOG_CONNECT(surf_network, surf);
338   XBT_LOG_CONNECT(surf_parse, surf);
339   XBT_LOG_CONNECT(surf_timer, surf);
340   XBT_LOG_CONNECT(surf_workstation, surf);
341
342 #ifdef HAVE_SDP
343   XBT_LOG_CONNECT(surf_sdp_out, surf);
344   XBT_LOG_CONNECT(surf_sdp, surf);
345 #endif
346 #ifdef HAVE_GTNETS
347   XBT_LOG_CONNECT(surf_network_gtnets, surf);
348 #endif
349    
350   xbt_init(argc, argv);
351   if (!surf_path) {
352
353     /* retrieves the current directory of the current process */
354     initial_path = __surf_get_initial_path();
355
356     xbt_assert0((initial_path),
357                 "__surf_get_initial_path() failed! Can't resolves current Windows directory");
358
359     surf_path = xbt_dynar_new(sizeof(char *), NULL);
360     xbt_dynar_push(surf_path, &initial_path);
361
362     for (i = 1; i < *argc; i++) {
363       if (!strncmp(argv[i], "--surf-path=", strlen("--surf-path="))) {
364         opt = strchr(argv[i], '=');
365         opt++;
366         xbt_dynar_push(surf_path, &opt);
367         /*remove this from argv */
368         for (j = i + 1; j < *argc; j++) {
369           argv[j - 1] = argv[j];
370         }
371         argv[j - 1] = NULL;
372         (*argc)--;
373         i--;                    /* compensate effect of next loop incrementation */
374       }
375     }
376   }
377   if (!model_list)
378     model_list = xbt_dynar_new(sizeof(surf_model_private_t), NULL);
379   if (!history)
380     history = tmgr_history_new();
381 }
382
383 static char *path_name = NULL;
384 FILE *surf_fopen(const char *name, const char *mode)
385 {
386   unsigned int iter;
387   char *path = NULL;
388   FILE *file = NULL;
389   unsigned int path_name_len = 0;       /* don't count '\0' */
390
391   xbt_assert0(name, "Need a non-NULL file name");
392
393   xbt_assert0(surf_path,
394               "surf_init has to be called before using surf_fopen");
395
396   if (__surf_is_absolute_file_path(name)) {     /* don't mess with absolute file names */
397     return fopen(name, mode);
398
399   } else {                      /* search relative files in the path */
400
401     if (!path_name) {
402       path_name_len = strlen(name);
403       path_name = xbt_new0(char, path_name_len + 1);
404     }
405
406     xbt_dynar_foreach(surf_path, iter, path) {
407       if (path_name_len < strlen(path) + strlen(name) + 1) {
408         path_name_len = strlen(path) + strlen(name) + 1;        /* plus '/' */
409         path_name = xbt_realloc(path_name, path_name_len + 1);
410       }
411       #ifdef WIN32
412       sprintf(path_name, "%s\\%s", path, name);
413       #else
414       sprintf(path_name, "%s/%s", path, name);
415       #endif
416       file = fopen(path_name, mode);
417       if (file)
418         return file;
419     }
420   }
421   return file;
422 }
423
424 void surf_exit(void)
425 {
426   unsigned int iter;
427   surf_model_t model = NULL;
428
429   xbt_dynar_foreach(model_list, iter, model) {
430     model->common_private->finalize();
431   }
432
433   if (maxmin_system) {
434     lmm_system_free(maxmin_system);
435     maxmin_system = NULL;
436   }
437   if (history) {
438     tmgr_history_free(history);
439     history = NULL;
440   }
441   if (model_list)
442     xbt_dynar_free(&model_list);
443
444   if (surf_path)
445     xbt_dynar_free(&surf_path);
446
447   tmgr_finalize();
448   surf_parse_lex_destroy();
449   if (path_name) {
450     free(path_name);
451     path_name = NULL;
452   }
453   surf_parse_free_callbacks();
454   xbt_dict_free(&route_table);
455   NOW=0; /* Just in case the user plans to restart the simulation afterward */
456   xbt_exit();
457 }
458
459 void surf_presolve(void) {
460   double next_event_date = -1.0;
461   tmgr_trace_event_t event = NULL;
462   double value = -1.0;
463   surf_model_object_t model_obj = NULL;
464   surf_model_t model = NULL;
465   unsigned int iter;
466    
467     DEBUG0
468         ("First Run! Let's \"purge\" events and put models in the right state");
469     while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
470       if (next_event_date > NOW)
471         break;
472       while ((event =
473               tmgr_history_get_next_event_leq(history, next_event_date,
474                                               &value,
475                                               (void **) &model_obj))) {
476         model_obj->model->common_private->
477           update_resource_state(model_obj, event, value,NOW);
478       }
479     }
480     xbt_dynar_foreach(model_list, iter, model) {
481       model->common_private->update_actions_state(NOW, 0.0);
482     }
483 }
484
485 double surf_solve(void)
486 {
487   double min = -1.0;
488   double next_event_date = -1.0;
489   double model_next_action_end = -1.0;
490   double value = -1.0;
491   surf_model_object_t model_obj = NULL;
492   surf_model_t model = NULL;
493   tmgr_trace_event_t event = NULL;
494   unsigned int iter;
495
496   min = -1.0;
497
498   DEBUG0("Looking for next action end");
499   xbt_dynar_foreach(model_list, iter, model) {
500     DEBUG1("Running for Resource [%s]", model->common_public->name);
501     model_next_action_end =
502         model->common_private->share_resources(NOW);
503     DEBUG2("Resource [%s] : next action end = %f",
504            model->common_public->name, model_next_action_end);
505     if (((min < 0.0) || (model_next_action_end < min))
506         && (model_next_action_end >= 0.0))
507       min = model_next_action_end;
508   }
509   DEBUG1("Next action end : %f", min);
510
511   if (min < 0.0)
512     return -1.0;
513
514   DEBUG0("Looking for next event");
515   while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
516     DEBUG1("Next event : %f", next_event_date);
517     if (next_event_date > NOW + min)
518       break;
519     DEBUG0("Updating models");
520     while ((event =
521             tmgr_history_get_next_event_leq(history, next_event_date,
522                                             &value,
523                                             (void **) &model_obj))) {
524       if (model_obj->model->common_private->
525           resource_used(model_obj)) {
526         min = next_event_date - NOW;
527         DEBUG1
528             ("This event will modify model state. Next event set to %f",
529              min);
530       }
531       /* update state of model_obj according to new value. Does not touch lmm.
532          It will be modified if needed when updating actions */
533       model_obj->model->common_private->
534         update_resource_state(model_obj, event, value,NOW+min);
535     }
536   }
537
538   DEBUG1("Duration set to %f", min);
539
540   NOW = NOW + min;
541
542   xbt_dynar_foreach(model_list, iter, model) {
543     model->common_private->update_actions_state(NOW, min);
544   }
545
546   return min;
547 }
548
549 double surf_get_clock(void)
550 {
551   return NOW;
552 }