ltt/branches/poly/lttv/main/stats.c

   1 /* This file is part of the Linux Trace Toolkit viewer
   2  * Copyright (C) 2003-2004 Michel Dagenais
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License Version 2 as
   6  * published by the Free Software Foundation;
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  16  * MA 02111-1307, USA.
  17  */
  18
  19
  20 #include <stdio.h>
  21 #include <lttv/stats.h>
  22 #include <lttv/lttv.h>
  23 #include <ltt/facility.h>
  24 #include <ltt/trace.h>
  25 #include <ltt/event.h>
  26
  27 #define BUF_SIZE 256
  28
  29 GQuark
  30   LTTV_STATS_PROCESS_UNKNOWN,
  31   LTTV_STATS_PROCESSES,
  32   LTTV_STATS_CPU,
  33   LTTV_STATS_MODE_TYPES,
  34   LTTV_STATS_MODES,
  35   LTTV_STATS_SUBMODES,
  36   LTTV_STATS_EVENT_TYPES,
  37   LTTV_STATS_CPU_TIME,
  38   LTTV_STATS_ELAPSED_TIME,
  39   LTTV_STATS_EVENTS,
  40   LTTV_STATS_EVENTS_COUNT;
  41
  42 static GQuark
  43   LTTV_STATS_BEFORE_HOOKS,
  44   LTTV_STATS_AFTER_HOOKS;
  45
  46 static void remove_all_processes(GHashTable *processes);
  47
  48 static void
  49 find_event_tree(LttvTracefileStats *tfcs, GQuark process, GQuark cpu,
  50     GQuark mode, GQuark sub_mode, LttvAttribute **events_tree,
  51     LttvAttribute **event_types_tree);
  52
  53 static void
  54 init(LttvTracesetStats *self, LttvTraceset *ts)
  55 {
  56   guint i, j, nb_trace, nb_control, nb_per_cpu, nb_tracefile;
  57
  58   LttvTraceContext *tc;
  59
  60   LttvTraceStats *tcs;
  61
  62   LttvTracefileContext *tfc;
  63
  64   LttvTracefileStats *tfcs;
  65
  66   LttTime timestamp = {0,0};
  67
  68   LTTV_TRACESET_CONTEXT_CLASS(g_type_class_peek(LTTV_TRACESET_STATE_TYPE))->
  69       init((LttvTracesetContext *)self, ts);
  70
  71   self->stats = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
  72   nb_trace = lttv_traceset_number(ts);
  73
  74   for(i = 0 ; i < nb_trace ; i++) {
  75     tcs = (LttvTraceStats *)tc = (LTTV_TRACESET_CONTEXT(self)->traces[i]);
  76     tcs->stats = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
  77
  78     nb_control = ltt_trace_control_tracefile_number(tc->t);
  79     nb_per_cpu = ltt_trace_per_cpu_tracefile_number(tc->t);
  80     nb_tracefile = nb_control + nb_per_cpu;
  81     for(j = 0 ; j < nb_tracefile ; j++) {
  82       if(j < nb_control) {
  83         tfcs = LTTV_TRACEFILE_STATS(tc->control_tracefiles[j]);
  84       }
  85       else {
  86         tfcs = LTTV_TRACEFILE_STATS(tc->per_cpu_tracefiles[j - nb_control]);
  87       }
  88
  89       tfcs->stats = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
  90       find_event_tree(tfcs, LTTV_STATS_PROCESS_UNKNOWN,
  91           tfcs->parent.cpu_name, LTTV_STATE_MODE_UNKNOWN,
  92           LTTV_STATE_SUBMODE_UNKNOWN, &tfcs->current_events_tree,
  93           &tfcs->current_event_types_tree);
  94     }
  95   }
  96 }
  97
  98
  99 static void
 100 fini(LttvTracesetStats *self)
 101 {
 102   guint i, j, nb_trace, nb_tracefile;
 103
 104   LttvTraceset *ts;
 105
 106   LttvTraceContext *tc;
 107
 108   LttvTraceStats *tcs;
 109
 110   LttvTracefileContext *tfc;
 111
 112   LttvTracefileStats *tfcs;
 113
 114   LttTime timestamp = {0,0};
 115
 116   lttv_attribute_recursive_free(self->stats);
 117   ts = self->parent.parent.ts;
 118   nb_trace = lttv_traceset_number(ts);
 119
 120   for(i = 0 ; i < nb_trace ; i++) {
 121     tcs = (LttvTraceStats *)tc = (LTTV_TRACESET_CONTEXT(self)->traces[i]);
 122     lttv_attribute_recursive_free(tcs->stats);
 123
 124     nb_tracefile = ltt_trace_control_tracefile_number(tc->t);
 125     for(j = 0 ; j < nb_tracefile ; j++) {
 126       tfcs = (LttvTracefileStats *)tfc = tc->control_tracefiles[j];
 127       lttv_attribute_recursive_free(tfcs->stats);
 128       tfcs->current_events_tree = NULL;
 129       tfcs->current_event_types_tree = NULL;
 130     }
 131
 132     nb_tracefile = ltt_trace_per_cpu_tracefile_number(tc->t);
 133     for(j = 0 ; j < nb_tracefile ; j++) {
 134       tfcs = (LttvTracefileStats *)tfc = tc->per_cpu_tracefiles[j];
 135       lttv_attribute_recursive_free(tfcs->stats);
 136       tfcs->current_events_tree = NULL;
 137       tfcs->current_event_types_tree = NULL;
 138     }
 139   }
 140   LTTV_TRACESET_CONTEXT_CLASS(g_type_class_peek(LTTV_TRACESET_STATE_TYPE))->
 141       fini((LttvTracesetContext *)self);
 142 }
 143
 144
 145 static LttvTracesetContext *
 146 new_traceset_context(LttvTracesetContext *self)
 147 {
 148   return LTTV_TRACESET_CONTEXT(g_object_new(LTTV_TRACESET_STATS_TYPE, NULL));
 149 }
 150
 151
 152 static LttvTraceContext *
 153 new_trace_context(LttvTracesetContext *self)
 154 {
 155   return LTTV_TRACE_CONTEXT(g_object_new(LTTV_TRACE_STATS_TYPE, NULL));
 156 }
 157
 158
 159 static LttvTracefileContext *
 160 new_tracefile_context(LttvTracesetContext *self)
 161 {
 162   return LTTV_TRACEFILE_CONTEXT(g_object_new(LTTV_TRACEFILE_STATS_TYPE, NULL));
 163 }
 164
 165
 166 static void
 167 traceset_stats_instance_init (GTypeInstance *instance, gpointer g_class)
 168 {
 169 }
 170
 171
 172 static void
 173 traceset_stats_finalize (LttvTracesetStats *self)
 174 {
 175   G_OBJECT_CLASS(g_type_class_peek(LTTV_TRACESET_STATE_TYPE))->
 176       finalize(G_OBJECT(self));
 177 }
 178
 179
 180 static void
 181 traceset_stats_class_init (LttvTracesetContextClass *klass)
 182 {
 183   GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
 184
 185   gobject_class->finalize = (void (*)(GObject *self)) traceset_stats_finalize;
 186   klass->init = (void (*)(LttvTracesetContext *self, LttvTraceset *ts))init;
 187   klass->fini = (void (*)(LttvTracesetContext *self))fini;
 188   klass->new_traceset_context = new_traceset_context;
 189   klass->new_trace_context = new_trace_context;
 190   klass->new_tracefile_context = new_tracefile_context;
 191 }
 192
 193
 194 GType
 195 lttv_traceset_stats_get_type(void)
 196 {
 197   static GType type = 0;
 198   if (type == 0) {
 199     static const GTypeInfo info = {
 200       sizeof (LttvTracesetStatsClass),
 201       NULL,   /* base_init */
 202       NULL,   /* base_finalize */
 203       (GClassInitFunc) traceset_stats_class_init,   /* class_init */
 204       NULL,   /* class_finalize */
 205       NULL,   /* class_data */
 206       sizeof (LttvTracesetContext),
 207       0,      /* n_preallocs */
 208       (GInstanceInitFunc) traceset_stats_instance_init    /* instance_init */
 209     };
 210
 211     type = g_type_register_static (LTTV_TRACESET_STATE_TYPE, "LttvTracesetStatsType",
 212         &info, 0);
 213   }
 214   return type;
 215 }
 216
 217
 218 static void
 219 trace_stats_instance_init (GTypeInstance *instance, gpointer g_class)
 220 {
 221 }
 222
 223
 224 static void
 225 trace_stats_finalize (LttvTraceStats *self)
 226 {
 227   G_OBJECT_CLASS(g_type_class_peek(LTTV_TRACE_STATE_TYPE))->
 228       finalize(G_OBJECT(self));
 229 }
 230
 231
 232 static void
 233 trace_stats_class_init (LttvTraceContextClass *klass)
 234 {
 235   GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
 236
 237   gobject_class->finalize = (void (*)(GObject *self)) trace_stats_finalize;
 238 }
 239
 240
 241 GType
 242 lttv_trace_stats_get_type(void)
 243 {
 244   static GType type = 0;
 245   if (type == 0) {
 246     static const GTypeInfo info = {
 247       sizeof (LttvTraceStatsClass),
 248       NULL,   /* base_init */
 249       NULL,   /* base_finalize */
 250       (GClassInitFunc) trace_stats_class_init,   /* class_init */
 251       NULL,   /* class_finalize */
 252       NULL,   /* class_data */
 253       sizeof (LttvTraceStats),
 254       0,      /* n_preallocs */
 255       (GInstanceInitFunc) trace_stats_instance_init    /* instance_init */
 256     };
 257
 258     type = g_type_register_static (LTTV_TRACE_STATE_TYPE,
 259         "LttvTraceStatsType", &info, 0);
 260   }
 261   return type;
 262 }
 263
 264
 265 static void
 266 tracefile_stats_instance_init (GTypeInstance *instance, gpointer g_class)
 267 {
 268 }
 269
 270
 271 static void
 272 tracefile_stats_finalize (LttvTracefileStats *self)
 273 {
 274   G_OBJECT_CLASS(g_type_class_peek(LTTV_TRACEFILE_STATE_TYPE))->
 275       finalize(G_OBJECT(self));
 276 }
 277
 278
 279 static void
 280 tracefile_stats_class_init (LttvTracefileStatsClass *klass)
 281 {
 282   GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
 283
 284   gobject_class->finalize = (void (*)(GObject *self)) tracefile_stats_finalize;
 285 }
 286
 287
 288 GType
 289 lttv_tracefile_stats_get_type(void)
 290 {
 291   static GType type = 0;
 292   if (type == 0) {
 293     static const GTypeInfo info = {
 294       sizeof (LttvTracefileStatsClass),
 295       NULL,   /* base_init */
 296       NULL,   /* base_finalize */
 297       (GClassInitFunc) tracefile_stats_class_init,   /* class_init */
 298       NULL,   /* class_finalize */
 299       NULL,   /* class_data */
 300       sizeof (LttvTracefileStats),
 301       0,      /* n_preallocs */
 302       (GInstanceInitFunc) tracefile_stats_instance_init    /* instance_init */
 303     };
 304
 305     type = g_type_register_static (LTTV_TRACEFILE_STATE_TYPE,
 306         "LttvTracefileStatsType", &info, 0);
 307   }
 308   return type;
 309 }
 310
 311
 312 static void
 313 find_event_tree(LttvTracefileStats *tfcs, GQuark process, GQuark cpu,
 314     GQuark mode, GQuark sub_mode, LttvAttribute **events_tree,
 315     LttvAttribute **event_types_tree)
 316 {
 317   LttvAttribute *a;
 318
 319   LttvTraceStats *tcs = LTTV_TRACE_STATS(tfcs->parent.parent.t_context);
 320   a = lttv_attribute_find_subdir(tcs->stats, LTTV_STATS_PROCESSES);
 321   a = lttv_attribute_find_subdir(a, tfcs->parent.process->pid_time);
 322   a = lttv_attribute_find_subdir(a, LTTV_STATS_CPU);
 323   a = lttv_attribute_find_subdir(a, tfcs->parent.cpu_name);
 324   a = lttv_attribute_find_subdir(a, LTTV_STATS_MODE_TYPES);
 325   a = lttv_attribute_find_subdir(a, tfcs->parent.process->state->t);
 326   a = lttv_attribute_find_subdir(a, LTTV_STATS_SUBMODES);
 327   a = lttv_attribute_find_subdir(a, tfcs->parent.process->state->n);
 328   *events_tree = a;
 329   a = lttv_attribute_find_subdir(a, LTTV_STATS_EVENT_TYPES);
 330   *event_types_tree = a;
 331 }
 332
 333
 334 static void update_event_tree(LttvTracefileStats *tfcs)
 335 {
 336   LttvExecutionState *es = tfcs->parent.process->state;
 337
 338   find_event_tree(tfcs, tfcs->parent.process->pid_time, tfcs->parent.cpu_name,
 339       es->t, es->n, &(tfcs->current_events_tree),
 340       &(tfcs->current_event_types_tree));
 341 }
 342
 343
 344 static void mode_change(LttvTracefileStats *tfcs)
 345 {
 346   LttvAttributeValue cpu_time;
 347
 348   LttTime delta;
 349
 350   lttv_attribute_find(tfcs->current_events_tree, LTTV_STATS_CPU_TIME,
 351       LTTV_TIME, &cpu_time);
 352   delta = ltt_time_sub(tfcs->parent.parent.timestamp,
 353       tfcs->parent.process->state->change);
 354   *(cpu_time.v_time) = ltt_time_add(*(cpu_time.v_time), delta);
 355 }
 356
 357
 358 static void mode_end(LttvTracefileStats *tfcs)
 359 {
 360   LttvAttributeValue elapsed_time, cpu_time;
 361
 362   LttTime delta;
 363
 364   lttv_attribute_find(tfcs->current_events_tree, LTTV_STATS_ELAPSED_TIME,
 365       LTTV_TIME, &elapsed_time);
 366   delta = ltt_time_sub(tfcs->parent.parent.timestamp,
 367       tfcs->parent.process->state->entry);
 368   *(elapsed_time.v_time) = ltt_time_add(*(elapsed_time.v_time), delta);
 369
 370   lttv_attribute_find(tfcs->current_events_tree, LTTV_STATS_CPU_TIME,
 371       LTTV_TIME, &cpu_time);
 372   delta = ltt_time_sub(tfcs->parent.parent.timestamp,
 373       tfcs->parent.process->state->change);
 374   *(cpu_time.v_time) = ltt_time_add(*(cpu_time.v_time), delta);
 375 }
 376
 377
 378 static gboolean before_syscall_entry(void *hook_data, void *call_data)
 379 {
 380   mode_change((LttvTracefileStats *)call_data);
 381   return FALSE;
 382 }
 383
 384
 385 static gboolean after_syscall_entry(void *hook_data, void *call_data)
 386 {
 387   update_event_tree((LttvTracefileStats *)call_data);
 388   return FALSE;
 389 }
 390
 391
 392 gboolean before_syscall_exit(void *hook_data, void *call_data)
 393 {
 394   mode_end((LttvTracefileStats *)call_data);
 395   return FALSE;
 396 }
 397
 398
 399 static gboolean after_syscall_exit(void *hook_data, void *call_data)
 400 {
 401   update_event_tree((LttvTracefileStats *)call_data);
 402   return FALSE;
 403 }
 404
 405
 406 gboolean before_trap_entry(void *hook_data, void *call_data)
 407 {
 408   mode_change((LttvTracefileStats *)call_data);
 409   return FALSE;
 410 }
 411
 412
 413 static gboolean after_trap_entry(void *hook_data, void *call_data)
 414 {
 415   update_event_tree((LttvTracefileStats *)call_data);
 416   return FALSE;
 417 }
 418
 419
 420 gboolean before_trap_exit(void *hook_data, void *call_data)
 421 {
 422   mode_end((LttvTracefileStats *)call_data);
 423   return FALSE;
 424 }
 425
 426
 427 gboolean after_trap_exit(void *hook_data, void *call_data)
 428 {
 429   update_event_tree((LttvTracefileStats *)call_data);
 430   return FALSE;
 431 }
 432
 433
 434 gboolean before_irq_entry(void *hook_data, void *call_data)
 435 {
 436   mode_change((LttvTracefileStats *)call_data);
 437   return FALSE;
 438 }
 439
 440
 441 gboolean after_irq_entry(void *hook_data, void *call_data)
 442 {
 443   update_event_tree((LttvTracefileStats *)call_data);
 444   return FALSE;
 445 }
 446
 447
 448 gboolean before_irq_exit(void *hook_data, void *call_data)
 449 {
 450   mode_end((LttvTracefileStats *)call_data);
 451   return FALSE;
 452 }
 453
 454
 455 gboolean after_irq_exit(void *hook_data, void *call_data)
 456 {
 457   update_event_tree((LttvTracefileStats *)call_data);
 458   return FALSE;
 459 }
 460
 461
 462 gboolean before_schedchange(void *hook_data, void *call_data)
 463 {
 464   LttvTraceHook *h = (LttvTraceHook *)hook_data;
 465
 466   LttvTracefileStats *tfcs = (LttvTracefileStats *)call_data;
 467
 468   guint pid_in, pid_out, state_out;
 469
 470   LttvProcessState *process;
 471
 472   pid_in = ltt_event_get_unsigned(tfcs->parent.parent.e, h->f1);
 473   pid_out = ltt_event_get_unsigned(tfcs->parent.parent.e, h->f2);
 474   state_out = ltt_event_get_unsigned(tfcs->parent.parent.e, h->f3);
 475
 476   /* compute the time for the process to schedule out */
 477
 478   mode_change(tfcs);
 479
 480   /* get the information for the process scheduled in */
 481
 482   process = lttv_state_find_process_or_create(&(tfcs->parent), pid_in);
 483
 484   find_event_tree(tfcs, process->pid_time, tfcs->parent.cpu_name,
 485       process->state->t, process->state->n, &(tfcs->current_events_tree),
 486       &(tfcs->current_event_types_tree));
 487
 488   /* compute the time waiting for the process to schedule in */
 489
 490   mode_change(tfcs);
 491   return FALSE;
 492 }
 493
 494
 495 gboolean process_fork(void *hook_data, void *call_data)
 496 {
 497   /* nothing to do for now */
 498   return FALSE;
 499 }
 500
 501
 502 gboolean process_exit(void *hook_data, void *call_data)
 503 {
 504   /* We should probably exit all modes here or we could do that at
 505      schedule out. */
 506   return FALSE;
 507 }
 508
 509
 510 gboolean every_event(void *hook_data, void *call_data)
 511 {
 512   LttvTracefileStats *tfcs = (LttvTracefileStats *)call_data;
 513
 514   LttvAttributeValue v;
 515
 516   /* The current branch corresponds to the tracefile/process/interrupt state.
 517      Statistics are added within it, to count the number of events of this
 518      type occuring in this context. A quark has been pre-allocated for each
 519      event type and is used as name. */
 520
 521   lttv_attribute_find(tfcs->current_event_types_tree,
 522       ((LttvTraceState *)(tfcs->parent.parent.t_context))->
 523       eventtype_names[ltt_event_eventtype_id(tfcs->parent.parent.e)],
 524       LTTV_UINT, &v);
 525   (*(v.v_uint))++;
 526   return FALSE;
 527 }
 528
 529
 530 static gboolean
 531 sum_stats(void *hook_data, void *call_data)
 532 {
 533   LttvTracesetStats *tscs = (LttvTracesetStats *)call_data;
 534
 535   LttvTraceStats *tcs;
 536
 537   LttvTraceset *traceset = tscs->parent.parent.ts;
 538
 539   LttvAttributeType type;
 540
 541   LttvAttributeValue value;
 542
 543   LttvAttributeName name;
 544
 545   unsigned sum;
 546
 547   int i, j, k, l, m, n, nb_trace, nb_process, nb_cpu, nb_mode_type, nb_submode,
 548       nb_event_type;
 549
 550   LttvAttribute *main_tree, *processes_tree, *process_tree, *cpus_tree,
 551       *cpu_tree, *mode_tree, *mode_types_tree, *submodes_tree,
 552       *submode_tree, *event_types_tree, *mode_events_tree,
 553       *cpu_events_tree, *process_modes_tree, *trace_cpu_tree,
 554       *trace_modes_tree, *traceset_modes_tree;
 555
 556   traceset_modes_tree = lttv_attribute_find_subdir(tscs->stats,
 557       LTTV_STATS_MODES);
 558   nb_trace = lttv_traceset_number(traceset);
 559
 560   for(i = 0 ; i < nb_trace ; i++) {
 561     tcs = (LttvTraceStats *)(tscs->parent.parent.traces[i]);
 562     main_tree = tcs->stats;
 563     processes_tree = lttv_attribute_find_subdir(main_tree,
 564         LTTV_STATS_PROCESSES);
 565     trace_modes_tree = lttv_attribute_find_subdir(main_tree, LTTV_STATS_MODES);
 566     nb_process = lttv_attribute_get_number(processes_tree);
 567
 568     for(j = 0 ; j < nb_process ; j++) {
 569       type = lttv_attribute_get(processes_tree, j, &name, &value);
 570       process_tree = LTTV_ATTRIBUTE(*(value.v_gobject));
 571
 572       cpus_tree = lttv_attribute_find_subdir(process_tree, LTTV_STATS_CPU);
 573       process_modes_tree = lttv_attribute_find_subdir(process_tree,
 574           LTTV_STATS_MODES);
 575       nb_cpu = lttv_attribute_get_number(cpus_tree);
 576
 577       for(k = 0 ; k < nb_cpu ; k++) {
 578         type = lttv_attribute_get(cpus_tree, k, &name, &value);
 579         cpu_tree = LTTV_ATTRIBUTE(*(value.v_gobject));
 580
 581         mode_types_tree = lttv_attribute_find_subdir(cpu_tree,
 582             LTTV_STATS_MODE_TYPES);
 583         cpu_events_tree = lttv_attribute_find_subdir(cpu_tree,
 584             LTTV_STATS_EVENTS);
 585         trace_cpu_tree = lttv_attribute_find_subdir(main_tree, LTTV_STATS_CPU);
 586         trace_cpu_tree = lttv_attribute_find_subdir(trace_cpu_tree, name);
 587         nb_mode_type = lttv_attribute_get_number(mode_types_tree);
 588
 589         for(l = 0 ; l < nb_mode_type ; l++) {
 590           type = lttv_attribute_get(mode_types_tree, l, &name, &value);
 591           mode_tree = LTTV_ATTRIBUTE(*(value.v_gobject));
 592
 593           submodes_tree = lttv_attribute_find_subdir(mode_tree,
 594               LTTV_STATS_SUBMODES);
 595           mode_events_tree = lttv_attribute_find_subdir(mode_tree,
 596               LTTV_STATS_EVENTS);
 597           nb_submode = lttv_attribute_get_number(submodes_tree);
 598
 599           for(m = 0 ; m < nb_submode ; m++) {
 600             type = lttv_attribute_get(submodes_tree, m, &name, &value);
 601             submode_tree = LTTV_ATTRIBUTE(*(value.v_gobject));
 602
 603             event_types_tree = lttv_attribute_find_subdir(submode_tree,
 604               LTTV_STATS_EVENT_TYPES);
 605             nb_event_type = lttv_attribute_get_number(event_types_tree);
 606
 607             sum = 0;
 608             for(n = 0 ; n < nb_event_type ; n++) {
 609               type = lttv_attribute_get(event_types_tree, n, &name, &value);
 610               sum += *(value.v_uint);
 611             }
 612             lttv_attribute_find(submode_tree, LTTV_STATS_EVENTS_COUNT,
 613                 LTTV_UINT, &value);
 614             *(value.v_uint) = sum;
 615             lttv_attribute_recursive_add(mode_events_tree, submode_tree);
 616           }
 617           lttv_attribute_recursive_add(cpu_events_tree, mode_events_tree);
 618         }
 619         lttv_attribute_recursive_add(process_modes_tree, cpu_tree);
 620         lttv_attribute_recursive_add(trace_cpu_tree, cpu_tree);
 621       }
 622       lttv_attribute_recursive_add(trace_modes_tree, process_modes_tree);
 623     }
 624     lttv_attribute_recursive_add(traceset_modes_tree, trace_modes_tree);
 625   }
 626   return FALSE;
 627 }
 628
 629
 630 lttv_stats_add_event_hooks(LttvTracesetStats *self)
 631 {
 632   LttvTraceset *traceset = self->parent.parent.ts;
 633
 634   guint i, j, k, nb_trace, nb_control, nb_per_cpu, nb_tracefile;
 635
 636   LttFacility *f;
 637
 638   LttEventType *et;
 639
 640   LttvTraceStats *ts;
 641
 642   LttvTracefileStats *tfs;
 643
 644   void *hook_data;
 645
 646   GArray *hooks, *before_hooks, *after_hooks;
 647
 648   LttvTraceHook hook;
 649
 650   LttvAttributeValue val;
 651
 652   nb_trace = lttv_traceset_number(traceset);
 653   for(i = 0 ; i < nb_trace ; i++) {
 654     ts = (LttvTraceStats *)self->parent.parent.traces[i];
 655
 656     /* Find the eventtype id for the following events and register the
 657        associated by id hooks. */
 658
 659     hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook));
 660     g_array_set_size(hooks, 7);
 661
 662     lttv_trace_find_hook(ts->parent.parent.t, "core","syscall_entry",
 663         "syscall_id", NULL, NULL, before_syscall_entry,
 664         &g_array_index(hooks, LttvTraceHook, 0));
 665
 666     lttv_trace_find_hook(ts->parent.parent.t, "core", "syscall_exit", NULL,
 667         NULL, NULL, before_syscall_exit,
 668         &g_array_index(hooks, LttvTraceHook, 1));
 669
 670     lttv_trace_find_hook(ts->parent.parent.t, "core", "trap_entry", "trap_id",
 671         NULL, NULL, before_trap_entry,
 672         &g_array_index(hooks, LttvTraceHook, 2));
 673
 674     lttv_trace_find_hook(ts->parent.parent.t, "core", "trap_exit", NULL, NULL,
 675         NULL, before_trap_exit, &g_array_index(hooks, LttvTraceHook, 3));
 676
 677     lttv_trace_find_hook(ts->parent.parent.t, "core", "irq_entry", "irq_id",
 678         NULL, NULL, before_irq_entry, &g_array_index(hooks, LttvTraceHook, 4));
 679
 680     lttv_trace_find_hook(ts->parent.parent.t, "core", "irq_exit", NULL, NULL,
 681         NULL, before_irq_exit, &g_array_index(hooks, LttvTraceHook, 5));
 682
 683     lttv_trace_find_hook(ts->parent.parent.t, "core", "schedchange", "in",
 684         "out", "out_state", before_schedchange,
 685          &g_array_index(hooks, LttvTraceHook, 6));
 686
 687     before_hooks = hooks;
 688
 689     hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook));
 690     g_array_set_size(hooks, 8);
 691
 692     lttv_trace_find_hook(ts->parent.parent.t, "core","syscall_entry",
 693         "syscall_id", NULL, NULL, after_syscall_entry,
 694         &g_array_index(hooks, LttvTraceHook, 0));
 695
 696     lttv_trace_find_hook(ts->parent.parent.t, "core", "syscall_exit", NULL,
 697         NULL, NULL, after_syscall_exit,
 698         &g_array_index(hooks, LttvTraceHook, 1));
 699
 700     lttv_trace_find_hook(ts->parent.parent.t, "core", "trap_entry", "trap_id",
 701         NULL, NULL, after_trap_entry, &g_array_index(hooks, LttvTraceHook, 2));
 702
 703     lttv_trace_find_hook(ts->parent.parent.t, "core", "trap_exit", NULL, NULL,
 704         NULL, after_trap_exit, &g_array_index(hooks, LttvTraceHook, 3));
 705
 706     lttv_trace_find_hook(ts->parent.parent.t, "core", "irq_entry", "irq_id",
 707         NULL, NULL, after_irq_entry, &g_array_index(hooks, LttvTraceHook, 4));
 708
 709     lttv_trace_find_hook(ts->parent.parent.t, "core", "irq_exit", NULL, NULL,
 710         NULL, after_irq_exit, &g_array_index(hooks, LttvTraceHook, 5));
 711
 712     lttv_trace_find_hook(ts->parent.parent.t, "core", "process_fork",
 713         "child_pid", NULL, NULL, process_fork,
 714         &g_array_index(hooks, LttvTraceHook, 6));
 715
 716     lttv_trace_find_hook(ts->parent.parent.t, "core", "process_exit", NULL,
 717         NULL, NULL, process_exit, &g_array_index(hooks, LttvTraceHook, 7));
 718
 719     after_hooks = hooks;
 720
 721     /* Add these hooks to each before_event_by_id hooks list */
 722
 723     nb_control = ltt_trace_control_tracefile_number(ts->parent.parent.t);
 724     nb_per_cpu = ltt_trace_per_cpu_tracefile_number(ts->parent.parent.t);
 725     nb_tracefile = nb_control + nb_per_cpu;
 726     for(j = 0 ; j < nb_tracefile ; j++) {
 727       if(j < nb_control) {
 728         tfs = LTTV_TRACEFILE_STATS(ts->parent.parent.control_tracefiles[j]);
 729       }
 730       else {
 731         tfs = LTTV_TRACEFILE_STATS(ts->parent.parent.per_cpu_tracefiles[
 732             j-nb_control]);
 733       }
 734
 735       lttv_hooks_add(tfs->parent.parent.after_event, every_event, NULL);
 736
 737       for(k = 0 ; k < before_hooks->len ; k++) {
 738         hook = g_array_index(before_hooks, LttvTraceHook, k);
 739         lttv_hooks_add(lttv_hooks_by_id_find(
 740             tfs->parent.parent.before_event_by_id,
 741             hook.id), hook.h, &g_array_index(before_hooks, LttvTraceHook, k));
 742       }
 743       for(k = 0 ; k < after_hooks->len ; k++) {
 744         hook = g_array_index(after_hooks, LttvTraceHook, k);
 745         lttv_hooks_add(lttv_hooks_by_id_find(
 746             tfs->parent.parent.after_event_by_id,
 747             hook.id), hook.h, &g_array_index(after_hooks, LttvTraceHook, k));
 748       }
 749     }
 750     lttv_attribute_find(self->parent.parent.a, LTTV_STATS_BEFORE_HOOKS,
 751         LTTV_POINTER, &val);
 752     *(val.v_pointer) = before_hooks;
 753     lttv_attribute_find(self->parent.parent.a, LTTV_STATS_AFTER_HOOKS,
 754         LTTV_POINTER, &val);
 755     *(val.v_pointer) = after_hooks;
 756   }
 757   lttv_hooks_add(self->parent.parent.after, sum_stats, NULL);
 758 }
 759
 760
 761 lttv_stats_remove_event_hooks(LttvTracesetStats *self)
 762 {
 763   LttvTraceset *traceset = self->parent.parent.ts;
 764
 765   guint i, j, k, nb_trace, nb_control, nb_per_cpu, nb_tracefile;
 766
 767   LttvTraceStats *ts;
 768
 769   LttvTracefileStats *tfs;
 770
 771   void *hook_data;
 772
 773   GArray *before_hooks, *after_hooks;
 774
 775   LttvTraceHook hook;
 776
 777   LttvAttributeValue val;
 778
 779   nb_trace = lttv_traceset_number(traceset);
 780   for(i = 0 ; i < nb_trace ; i++) {
 781     ts = LTTV_TRACE_STATS(self->parent.parent.traces[i]);
 782     lttv_attribute_find(self->parent.parent.a, LTTV_STATS_BEFORE_HOOKS,
 783         LTTV_POINTER, &val);
 784     before_hooks = *(val.v_pointer);
 785     lttv_attribute_find(self->parent.parent.a, LTTV_STATS_AFTER_HOOKS,
 786         LTTV_POINTER, &val);
 787     after_hooks = *(val.v_pointer);
 788
 789     /* Add these hooks to each before_event_by_id hooks list */
 790
 791     nb_control = ltt_trace_control_tracefile_number(ts->parent.parent.t);
 792     nb_per_cpu = ltt_trace_per_cpu_tracefile_number(ts->parent.parent.t);
 793     nb_tracefile = nb_control + nb_per_cpu;
 794     for(j = 0 ; j < nb_tracefile ; j++) {
 795       if(j < nb_control) {
 796         tfs = LTTV_TRACEFILE_STATS(ts->parent.parent.control_tracefiles[j]);
 797       }
 798       else {
 799         tfs =LTTV_TRACEFILE_STATS(ts->parent.parent.per_cpu_tracefiles[
 800             j-nb_control]);
 801       }
 802
 803       lttv_hooks_remove_data(tfs->parent.parent.after_event, every_event,
 804           NULL);
 805
 806       for(k = 0 ; k < before_hooks->len ; k++) {
 807         hook = g_array_index(before_hooks, LttvTraceHook, k);
 808         lttv_hooks_remove_data(
 809             lttv_hooks_by_id_find(tfs->parent.parent.before_event_by_id,
 810             hook.id), hook.h, &g_array_index(before_hooks, LttvTraceHook, k));
 811       }
 812       for(k = 0 ; k < after_hooks->len ; k++) {
 813         hook = g_array_index(after_hooks, LttvTraceHook, k);
 814         lttv_hooks_remove_data(
 815             lttv_hooks_by_id_find(tfs->parent.parent.after_event_by_id,
 816             hook.id), hook.h, &g_array_index(after_hooks, LttvTraceHook, k));
 817       }
 818     }
 819     g_debug("lttv_stats_remove_event_hooks()");
 820     g_array_free(before_hooks, TRUE);
 821     g_array_free(after_hooks, TRUE);
 822   }
 823   lttv_hooks_remove_data(self->parent.parent.after, sum_stats, NULL);
 824 }
 825
 826
 827 void lttv_stats_init(int argc, char **argv)
 828 {
 829   LTTV_STATS_PROCESS_UNKNOWN = g_quark_from_string("unknown process");
 830   LTTV_STATS_PROCESSES = g_quark_from_string("processes");
 831   LTTV_STATS_CPU = g_quark_from_string("cpu");
 832   LTTV_STATS_MODE_TYPES = g_quark_from_string("mode_types");
 833   LTTV_STATS_MODES = g_quark_from_string("modes");
 834   LTTV_STATS_SUBMODES = g_quark_from_string("submodes");
 835   LTTV_STATS_EVENT_TYPES = g_quark_from_string("event_types");
 836   LTTV_STATS_CPU_TIME = g_quark_from_string("cpu time");
 837   LTTV_STATS_ELAPSED_TIME = g_quark_from_string("elapsed time");
 838   LTTV_STATS_EVENTS = g_quark_from_string("events");
 839   LTTV_STATS_EVENTS_COUNT = g_quark_from_string("events count");
 840   LTTV_STATS_BEFORE_HOOKS = g_quark_from_string("saved stats before hooks");
 841   LTTV_STATS_AFTER_HOOKS = g_quark_from_string("saved stats after hooks");
 842 }
 843
 844 void lttv_stats_destroy()
 845 {
 846 }
 847
 848 void lttv_stats_save_attribute(LttvAttribute *attr, char *indent, FILE * fp)
 849 {
 850   LttvAttributeType type;
 851   LttvAttributeValue value;
 852   LttvAttributeName name;
 853   char type_value[BUF_SIZE];
 854   int i, nb_attr, flag;
 855
 856   nb_attr = lttv_attribute_get_number(attr);
 857   for(i=0;i<nb_attr;i++){
 858     flag = 1;
 859     type = lttv_attribute_get(attr, i, &name, &value);
 860     switch(type) {
 861       case LTTV_INT:
 862         sprintf(type_value, "%d\0", *value.v_int);
 863         break;
 864       case LTTV_UINT:
 865         sprintf(type_value, "%u\0", *value.v_uint);
 866         break;
 867       case LTTV_LONG:
 868         sprintf(type_value, "%ld\0", *value.v_long);
 869         break;
 870       case LTTV_ULONG:
 871         sprintf(type_value, "%lu\0", *value.v_ulong);
 872         break;
 873       case LTTV_FLOAT:
 874         sprintf(type_value, "%f\0", (double)*value.v_float);
 875         break;
 876       case LTTV_DOUBLE:
 877         sprintf(type_value, "%f\0", *value.v_double);
 878         break;
 879       case LTTV_TIME:
 880         sprintf(type_value, "%10u.%09u\0", value.v_time->tv_sec,
 881             value.v_time->tv_nsec);
 882         break;
 883       case LTTV_POINTER:
 884         sprintf(type_value, "POINTER\0");
 885         break;
 886       case LTTV_STRING:
 887         sprintf(type_value, "%s\0", *value.v_string);
 888         break;
 889       default:
 890         flag = 0;
 891         break;
 892     }
 893     if(flag == 0) continue;
 894     fprintf(fp,"%s<VALUE type=\"%d\" name=\"%s\">",indent,type,g_quark_to_string(name));
 895     fprintf(fp,"%s",type_value);
 896     fprintf(fp,"</VALUE> \n");
 897   }
 898
 899 }
 900
 901 void lttv_stats_save_statistics(LttvTracesetStats *self)
 902 {
 903   LttvTracesetStats *tscs = self;
 904   LttvTraceStats *tcs;
 905   LttvTraceset *traceset = tscs->parent.parent.ts;
 906   LttvAttributeType type;
 907   LttvAttributeValue value;
 908   LttvAttributeName name;
 909
 910   char filename[BUF_SIZE];
 911   FILE * fp;
 912   char indent[10][24]= {"  ",
 913                         "    ",
 914                         "      ",
 915                         "        ",
 916                         "          ",
 917                         "            ",
 918                         "              ",
 919                         "                ",
 920                         "                  ",
 921                         "                    "
 922                        };
 923
 924
 925   int i, j, k, l, m, n, nb_trace, nb_process, nb_cpu, nb_mode_type, nb_submode;
 926
 927   LttvAttribute *main_tree, *processes_tree, *process_tree, *cpus_tree,
 928       *cpu_tree, *mode_tree, *mode_types_tree, *submodes_tree,
 929       *submode_tree, *event_types_tree;
 930
 931   nb_trace = lttv_traceset_number(traceset);
 932
 933   for(i = 0 ; i < nb_trace ; i++) {
 934     tcs = (LttvTraceStats *)(tscs->parent.parent.traces[i]);
 935
 936     filename[0] = '\0';
 937     strcat(filename,ltt_trace_name(tcs->parent.parent.t));
 938     strcat(filename,"/statistics.xml");
 939     fp = fopen(filename,"w");
 940     if(!fp){
 941       g_warning("can not open the file %s for saving statistics\n", filename);
 942       exit(1);
 943     }
 944
 945     main_tree = tcs->stats;
 946     processes_tree = lttv_attribute_find_subdir(main_tree, LTTV_STATS_PROCESSES);
 947     nb_process = lttv_attribute_get_number(processes_tree);
 948
 949     fprintf(fp, "<NODE name=\"%s\"> \n",g_quark_to_string(LTTV_STATS_PROCESSES)); //root NODE
 950
 951     for(j = 0 ; j < nb_process ; j++) {
 952       type = lttv_attribute_get(processes_tree, j, &name, &value);
 953       process_tree = LTTV_ATTRIBUTE(*(value.v_gobject));
 954
 955       fprintf(fp,"%s<NODE name=\"%s\"> \n",indent[0],g_quark_to_string(name)); //process NODE
 956       lttv_stats_save_attribute(process_tree,indent[1], fp);
 957       fprintf(fp,"%s<NODE name=\"%s\"> \n", indent[1],g_quark_to_string(LTTV_STATS_CPU)); //cpus NODE
 958
 959       cpus_tree = lttv_attribute_find_subdir(process_tree, LTTV_STATS_CPU);
 960       nb_cpu = lttv_attribute_get_number(cpus_tree);
 961
 962       for(k = 0 ; k < nb_cpu ; k++) {
 963         type = lttv_attribute_get(cpus_tree, k, &name, &value);
 964         cpu_tree = LTTV_ATTRIBUTE(*(value.v_gobject));
 965
 966         fprintf(fp,"%s<NODE name=\"%s\"> \n",indent[2],g_quark_to_string(name)); //cpu NODE
 967         lttv_stats_save_attribute(cpu_tree,indent[3], fp);
 968         fprintf(fp,"%s<NODE name=\"%s\"> \n",indent[3],g_quark_to_string(LTTV_STATS_MODE_TYPES)); //mode_types NODE
 969
 970         mode_types_tree = lttv_attribute_find_subdir(cpu_tree,LTTV_STATS_MODE_TYPES);
 971         nb_mode_type = lttv_attribute_get_number(mode_types_tree);
 972
 973         for(l = 0 ; l < nb_mode_type ; l++) {
 974           type = lttv_attribute_get(mode_types_tree, l, &name, &value);
 975           mode_tree = LTTV_ATTRIBUTE(*(value.v_gobject));
 976
 977           fprintf(fp,"%s<NODE name=\"%s\"> \n",indent[4],g_quark_to_string(name)); //mode NODE
 978           lttv_stats_save_attribute(mode_tree,indent[5], fp);
 979           fprintf(fp,"%s<NODE name=\"%s\"> \n",indent[5],g_quark_to_string(LTTV_STATS_SUBMODES)); //sub_modes NODE
 980
 981           submodes_tree = lttv_attribute_find_subdir(mode_tree,LTTV_STATS_SUBMODES);
 982           nb_submode = lttv_attribute_get_number(submodes_tree);
 983
 984           for(m = 0 ; m < nb_submode ; m++) {
 985             type = lttv_attribute_get(submodes_tree, m, &name, &value);
 986             submode_tree = LTTV_ATTRIBUTE(*(value.v_gobject));
 987             fprintf(fp,"%s<NODE name=\"%s\"> \n",indent[6],g_quark_to_string(name)); //sub_mode NODE
 988             lttv_stats_save_attribute(submode_tree,indent[7], fp);
 989             fprintf(fp,"%s<NODE name=\"%s\"> \n",indent[7],g_quark_to_string(LTTV_STATS_EVENT_TYPES)); //event_types NODE
 990
 991             event_types_tree = lttv_attribute_find_subdir(submode_tree, LTTV_STATS_EVENT_TYPES);
 992             lttv_stats_save_attribute(event_types_tree,indent[8], fp);
 993
 994             fprintf(fp,"%s</NODE> \n",indent[7]); //event_types NODE
 995             fprintf(fp,"%s</NODE> \n",indent[6]); //sub_mode NODE
 996           }
 997           fprintf(fp,"%s</NODE> \n",indent[5]); //sub_modes NODE
 998           fprintf(fp,"%s</NODE> \n",indent[4]); //mode NODE
 999         }
1000         fprintf(fp,"%s</NODE> \n",indent[3]); //mode_type NODE
1001         fprintf(fp,"%s</NODE> \n",indent[2]); //cpu NODE
1002       }
1003       fprintf(fp,"%s</NODE> \n",indent[1]); //cpus NODE
1004       fprintf(fp,"%s</NODE> \n", indent[0]); //process NODE
1005     }
1006     fprintf(fp, "</NODE>\n"); //root NODE
1007     fclose(fp);
1008   }
1009 }
1010
1011
1012 /* Functions to parse statistic.xml file (using glib xml parser) */
1013
1014 typedef struct _ParserStruct{
1015   GPtrArray * attribute;
1016   LttvAttributeType type;
1017   LttvAttributeName name;
1018 } ParserStruct;
1019
1020 static void stats_parser_start_element (GMarkupParseContext  *context,
1021                                         const gchar          *element_name,
1022                                         const gchar         **attribute_names,
1023                                         const gchar         **attribute_values,
1024                                         gpointer              user_data,
1025                                         GError              **error)
1026 {
1027   ParserStruct * parser = (ParserStruct *)user_data;
1028   int len;
1029   LttvAttributeType type;
1030   LttvAttributeName name;
1031   LttvAttribute * parent_att, *new_att;
1032
1033   len = parser->attribute->len;
1034   parent_att = (LttvAttribute *)g_ptr_array_index (parser->attribute, len-1);
1035
1036   if(strcmp("NODE", element_name) == 0){
1037     type = LTTV_GOBJECT;
1038     name = g_quark_from_string(attribute_values[0]);
1039     new_att = lttv_attribute_find_subdir(parent_att,name);
1040     g_ptr_array_add(parser->attribute, (gpointer)new_att);
1041   }else if(strcmp("VALUE", element_name) == 0){
1042     parser->type = (LttvAttributeType) atoi(attribute_values[0]);
1043     parser->name = g_quark_from_string(attribute_values[1]);
1044   }else{
1045     g_warning("This is not statistics.xml file\n");
1046     exit(1);
1047   }
1048 }
1049
1050 static void stats_parser_end_element   (GMarkupParseContext  *context,
1051                                         const gchar          *element_name,
1052                                         gpointer              user_data,
1053                                         GError              **error)
1054 {
1055   ParserStruct * parser = (ParserStruct *)user_data;
1056   int len;
1057   LttvAttribute * parent_att;
1058
1059   len = parser->attribute->len;
1060   parent_att = (LttvAttribute *)g_ptr_array_index (parser->attribute, len-1);
1061
1062   if(strcmp("NODE", element_name) == 0){
1063     g_ptr_array_remove_index(parser->attribute, len-1);
1064   }else if(strcmp("VALUE", element_name) == 0){
1065   }else{
1066     g_warning("This is not statistics.xml file\n");
1067     exit(1);
1068   }
1069
1070 }
1071
1072 static void  stats_parser_characters   (GMarkupParseContext  *context,
1073                                         const gchar          *text,
1074                                         gsize                 text_len,
1075                                         gpointer              user_data,
1076                                         GError              **error)
1077 {
1078   ParserStruct * parser = (ParserStruct *)user_data;
1079   LttvAttributeValue  value;
1080   int len;
1081   LttvAttribute * parent_att;
1082   char *pos;
1083
1084   pos = (char*)text;
1085   for(len=0;len<text_len;len++){
1086     if(isspace(*pos)){
1087       pos++;
1088       continue;
1089     }
1090     break;
1091   }
1092   if(strlen(pos) == 0)return;
1093
1094   len = parser->attribute->len;
1095   parent_att = (LttvAttribute *)g_ptr_array_index (parser->attribute, len-1);
1096   if(!lttv_attribute_find(parent_att,parser->name, parser->type, &value)){
1097     g_warning("can not find value\n");
1098     exit(1);
1099   }
1100
1101   switch(parser->type) {
1102     case LTTV_INT:
1103       *value.v_int = atoi(text);
1104       break;
1105     case LTTV_UINT:
1106       *value.v_uint = (unsigned)atoi(text);
1107       break;
1108     case LTTV_LONG:
1109       *value.v_long = atol(text);
1110       break;
1111     case LTTV_ULONG:
1112       *value.v_ulong = (unsigned long)atol(text);
1113       break;
1114     case LTTV_FLOAT:
1115       *value.v_float = atof(text);
1116       break;
1117     case LTTV_DOUBLE:
1118       *value.v_float = atof(text);
1119       break;
1120     case LTTV_TIME:
1121       pos = strrchr(text,'.');
1122       if(pos){
1123         *pos = '\0';
1124         pos++;
1125         value.v_time->tv_sec = atol(text);
1126         value.v_time->tv_nsec = atol(pos);
1127       }else{
1128         g_warning("The time value format is wrong\n");
1129         exit(1);
1130       }
1131       break;
1132     case LTTV_POINTER:
1133       break;
1134     case LTTV_STRING:
1135       *value.v_string = g_strdup(text);
1136       break;
1137     default:
1138       break;
1139   }
1140
1141 }
1142
1143 gboolean lttv_stats_load_statistics(LttvTracesetStats *self)
1144 {
1145   FILE * fp;
1146   char buf[BUF_SIZE];
1147   LttvTracesetStats *tscs = self;
1148   LttvTraceStats *tcs;
1149   LttvTraceset *traceset = tscs->parent.parent.ts;
1150   char filename[BUF_SIZE];
1151
1152   GMarkupParseContext * context;
1153   GError * error;
1154   GMarkupParser markup_parser =
1155     {
1156       stats_parser_start_element,
1157       stats_parser_end_element,
1158       stats_parser_characters,
1159       NULL,  /*  passthrough  */
1160       NULL   /*  error        */
1161     };
1162
1163   int i, nb_trace;
1164   LttvAttribute *main_tree;
1165   ParserStruct a_parser_struct;
1166   a_parser_struct.attribute = g_ptr_array_new();
1167
1168   nb_trace = lttv_traceset_number(traceset);
1169
1170   for(i = 0 ; i < nb_trace ; i++) {
1171     tcs = (LttvTraceStats *)(tscs->parent.parent.traces[i]);
1172
1173     filename[0] = '\0';
1174     strcat(filename,ltt_trace_name(tcs->parent.parent.t));
1175     strcat(filename,"/statistics.xml");
1176     fp = fopen(filename,"r");
1177     if(!fp){
1178       g_warning("can not open the file %s for reading statistics\n", filename);
1179       return FALSE;
1180     }
1181
1182     main_tree = tcs->stats;
1183     g_ptr_array_add(a_parser_struct.attribute,(gpointer)main_tree);
1184
1185     context = g_markup_parse_context_new(&markup_parser, 0, (gpointer)&a_parser_struct, NULL);
1186
1187     while(fgets(buf,BUF_SIZE, fp) != NULL){
1188       if(!g_markup_parse_context_parse(context, buf, BUF_SIZE, &error)){
1189         g_warning("Can not parse xml file: \n%s\n", error->message);
1190         exit(1);
1191       }
1192     }
1193     fclose(fp);
1194   }
1195
1196   sum_stats(NULL, (void *)self);
1197
1198   return TRUE;
1199 }