ltt/branches/poly/lttv/state.c

   1
   2 #include <lttv/state.h>
   3 #include <ltt/facility.h>
   4 #include <ltt/trace.h>
   5
   6 LttvInterruptType
   7   LTTV_STATE_USER_MODE,
   8   LTTV_STATE_SYSCALL,
   9   LTTV_STATE_TRAP,
  10   LTTV_STATE_IRQ;
  11
  12
  13 LttvProcessStatus
  14   LTTV_STATE_UNNAMED,
  15   LTTV_STATE_WAIT_FORK,
  16   LTTV_STATE_WAIT_CPU,
  17   LTTV_STATE_EXIT,
  18   LTTV_STATE_WAIT,
  19   LTTV_STATE_RUN;
  20
  21 static GQuark
  22   LTTV_STATE_HOOKS;
  23
  24 void remove_all_processes(GHashTable *processes);
  25
  26
  27 static void
  28 init(LttvTracesetState *self, LttvTraceset *ts)
  29 {
  30   guint i, j, nb_trace, nb_tracefile;
  31
  32   LttvTraceContext *tc;
  33
  34   LttvTraceState *tcs;
  35
  36   LttvTracefileContext *tfc;
  37
  38   LttvTracefileState *tfcs;
  39
  40   LTTV_TRACESET_CONTEXT_CLASS(g_type_class_peek_parent(LTTV_TRACESET_STATE_GET_CLASS(self)))->init((LttvTracesetContext *)self, ts);
  41
  42   nb_trace = lttv_traceset_number(ts);
  43   for(i = 0 ; i < nb_trace ; i++) {
  44     tcs = (LttvTraceState *)tc = (LTTV_TRACESET_CONTEXT(self)->traces[i]);
  45     tcs->processes = g_hash_table_new(g_direct_hash, g_direct_equal);
  46
  47     nb_tracefile = ltt_trace_control_tracefile_number(tc->t);
  48     for(j = 0 ; j < nb_tracefile ; j++) {
  49       tfcs = (LttvTracefileState *)tfc = tc->control_tracefiles[j];
  50       tfcs->process = NULL;
  51     }
  52
  53     nb_tracefile = ltt_trace_per_cpu_tracefile_number(tc->t);
  54     for(j = 0 ; j < nb_tracefile ; j++) {
  55       tfcs = (LttvTracefileState *)tfc = tc->per_cpu_tracefiles[j];
  56       tfcs->process = NULL;
  57     }
  58   }
  59 }
  60
  61
  62 static void
  63 fini(LttvTracesetState *self)
  64 {
  65   guint i, j, nb_trace, nb_tracefile;
  66
  67   LttvTraceState *tcs;
  68
  69   LttvTracefileState *tfcs;
  70
  71   nb_trace = lttv_traceset_number(LTTV_TRACESET_CONTEXT(self)->ts);
  72   for(i = 0 ; i < nb_trace ; i++) {
  73     tcs = (LttvTraceState *)(LTTV_TRACESET_CONTEXT(self)->traces[i]);
  74     remove_all_processes(tcs->processes);
  75     g_hash_table_destroy(tcs->processes);
  76   }
  77   LTTV_TRACESET_CONTEXT_CLASS(g_type_class_peek_parent(LTTV_TRACESET_STATE_GET_CLASS(self)))->fini((LttvTracesetContext *)self);
  78 }
  79
  80
  81 LttvTracesetContext *
  82 new_traceset_context(LttvTracesetContext *self)
  83 {
  84   return LTTV_TRACESET_CONTEXT(g_object_new(LTTV_TRACESET_STATE_TYPE, NULL));
  85 }
  86
  87
  88 LttvTraceContext *
  89 new_trace_context(LttvTracesetContext *self)
  90 {
  91   return LTTV_TRACE_CONTEXT(g_object_new(LTTV_TRACE_STATE_TYPE, NULL));
  92 }
  93
  94
  95 LttvTracefileContext *
  96 new_tracefile_context(LttvTracesetContext *self)
  97 {
  98   return LTTV_TRACEFILE_CONTEXT(g_object_new(LTTV_TRACEFILE_STATE_TYPE, NULL));
  99 }
 100
 101
 102 static void
 103 traceset_state_instance_init (GTypeInstance *instance, gpointer g_class)
 104 {
 105 }
 106
 107
 108 static void
 109 traceset_state_finalize (LttvTracesetContext *self)
 110 {
 111   G_OBJECT_CLASS(g_type_class_peek_parent(LTTV_TRACESET_STATE_GET_CLASS(self)))->finalize(G_OBJECT(self));
 112 }
 113
 114
 115 static void
 116 traceset_state_class_init (LttvTracesetContextClass *klass)
 117 {
 118   GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
 119
 120   gobject_class->finalize = (void (*)(GObject *self)) traceset_state_finalize;
 121   klass->init = (void (*)(LttvTracesetContext *self, LttvTraceset *ts))init;
 122   klass->fini = (void (*)(LttvTracesetContext *self))fini;
 123   klass->new_traceset_context = new_traceset_context;
 124   klass->new_trace_context = new_trace_context;
 125   klass->new_tracefile_context = new_tracefile_context;
 126 }
 127
 128
 129 GType
 130 lttv_traceset_state_get_type(void)
 131 {
 132   static GType type = 0;
 133   if (type == 0) {
 134     static const GTypeInfo info = {
 135       sizeof (LttvTracesetStateClass),
 136       NULL,   /* base_init */
 137       NULL,   /* base_finalize */
 138       (GClassInitFunc) traceset_state_class_init,   /* class_init */
 139       NULL,   /* class_finalize */
 140       NULL,   /* class_data */
 141       sizeof (LttvTracesetContext),
 142       0,      /* n_preallocs */
 143       (GInstanceInitFunc) traceset_state_instance_init    /* instance_init */
 144     };
 145
 146     type = g_type_register_static (LTTV_TRACESET_CONTEXT_TYPE, "LttvTracesetStateType",
 147         &info, 0);
 148   }
 149   return type;
 150 }
 151
 152
 153 static void
 154 trace_state_instance_init (GTypeInstance *instance, gpointer g_class)
 155 {
 156 }
 157
 158
 159 static void
 160 trace_state_finalize (LttvTraceContext *self)
 161 {
 162   G_OBJECT_CLASS(g_type_class_peek_parent(LTTV_TRACE_STATE_GET_CLASS(self)))->finalize(G_OBJECT(self));
 163 }
 164
 165
 166 static void
 167 trace_state_class_init (LttvTraceContextClass *klass)
 168 {
 169   GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
 170
 171   gobject_class->finalize = (void (*)(GObject *self)) trace_state_finalize;
 172 }
 173
 174
 175 GType
 176 lttv_trace_state_get_type(void)
 177 {
 178   static GType type = 0;
 179   if (type == 0) {
 180     static const GTypeInfo info = {
 181       sizeof (LttvTraceStateClass),
 182       NULL,   /* base_init */
 183       NULL,   /* base_finalize */
 184       (GClassInitFunc) trace_state_class_init,   /* class_init */
 185       NULL,   /* class_finalize */
 186       NULL,   /* class_data */
 187       sizeof (LttvTracesetState),
 188       0,      /* n_preallocs */
 189       (GInstanceInitFunc) trace_state_instance_init    /* instance_init */
 190     };
 191
 192     type = g_type_register_static (LTTV_TRACE_CONTEXT_TYPE,
 193         "LttvTraceStateType", &info, 0);
 194   }
 195   return type;
 196 }
 197
 198
 199 static void
 200 tracefile_state_instance_init (GTypeInstance *instance, gpointer g_class)
 201 {
 202 }
 203
 204
 205 static void
 206 tracefile_state_finalize (LttvTracefileState *self)
 207 {
 208   G_OBJECT_CLASS(g_type_class_peek_parent(LTTV_TRACEFILE_STATE_GET_CLASS(self)))->finalize(G_OBJECT(self));
 209 }
 210
 211
 212 static void
 213 tracefile_state_class_init (LttvTracefileStateClass *klass)
 214 {
 215   GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
 216
 217   gobject_class->finalize = (void (*)(GObject *self)) tracefile_state_finalize;
 218 }
 219
 220
 221 GType
 222 lttv_tracefile_state_get_type(void)
 223 {
 224   static GType type = 0;
 225   if (type == 0) {
 226     static const GTypeInfo info = {
 227       sizeof (LttvTracefileStateClass),
 228       NULL,   /* base_init */
 229       NULL,   /* base_finalize */
 230       (GClassInitFunc) tracefile_state_class_init,   /* class_init */
 231       NULL,   /* class_finalize */
 232       NULL,   /* class_data */
 233       sizeof (LttvTracefileState),
 234       0,      /* n_preallocs */
 235       (GInstanceInitFunc) tracefile_state_instance_init    /* instance_init */
 236     };
 237
 238     type = g_type_register_static (LTTV_TRACEFILE_CONTEXT_TYPE,
 239         "LttvTracefileStateType", &info, 0);
 240   }
 241   return type;
 242 }
 243
 244
 245 struct HookData {
 246   LttField *f1;
 247   LttField *f2;
 248   LttField *f3;
 249 };
 250
 251
 252 struct HookId {
 253   LttvHook h;
 254   guint id;
 255   void *hook_data;
 256   gboolean free_hook_data;
 257 };
 258
 259
 260 static void push_state(LttvTracefileState *tfs, LttvInterruptType t,
 261     guint state_id)
 262 {
 263   LttvInterruptState *intr;
 264
 265   LttvProcessState *process = tfs->process;
 266
 267   guint depth = process->interrupt_stack->len;
 268
 269   g_array_set_size(process->interrupt_stack, depth + 1);
 270   intr = &g_array_index(process->interrupt_stack, LttvInterruptState, depth);
 271   intr->t = t;
 272   intr->n = state_id;
 273   intr->entry = intr->last_change = LTTV_TRACEFILE_CONTEXT(tfs)->timestamp;
 274   intr->s = process->state->s;
 275 }
 276
 277
 278 static void pop_state(LttvTracefileState *tfs, LttvInterruptType t)
 279 {
 280   LttvProcessState *process = tfs->process;
 281
 282   guint depth = process->interrupt_stack->len - 1;
 283
 284   g_assert(process->state->t == t);
 285   g_array_remove_index(process->interrupt_stack, depth);
 286   depth--;
 287   process->state = &g_array_index(process->interrupt_stack, LttvInterruptState,
 288       depth);
 289 }
 290
 291
 292 LttvProcessState *create_process(LttvTracefileState *tfs,
 293     LttvProcessState *parent, guint pid)
 294 {
 295   LttvProcessState *process = g_new(LttvProcessState, 1);
 296
 297   LttvInterruptState *intr;
 298
 299   LttvTraceContext *tc;
 300
 301   LttvTraceState *tcs;
 302
 303   LttvTracefileContext *tfc = LTTV_TRACEFILE_CONTEXT(tfs);
 304
 305   tcs = (LttvTraceState *)tc = tfc->t_context;
 306
 307   g_hash_table_insert(tcs->processes, GUINT_TO_POINTER(pid), process);
 308   process->pid = pid;
 309   process->birth = tfc->timestamp;
 310   process->name = LTTV_STATE_UNNAMED;
 311   process->interrupt_stack = g_array_new(FALSE, FALSE,
 312       sizeof(LttvInterruptState));
 313   g_array_set_size(process->interrupt_stack, 1);
 314   intr = process->state = &g_array_index(process->interrupt_stack,
 315       LttvInterruptState, 0);
 316   intr->t = LTTV_STATE_USER_MODE;
 317   intr->n = 0;
 318   intr->entry = tfc->timestamp;
 319   intr->last_change = tfc->timestamp;
 320   intr->s = LTTV_STATE_WAIT_FORK;
 321 }
 322
 323
 324 LttvProcessState *find_process(LttvTracefileState *tfs, guint pid)
 325 {
 326   LttvTraceState *ts =(LttvTraceState *)LTTV_TRACEFILE_CONTEXT(tfs)->t_context;
 327   LttvProcessState *process = g_hash_table_lookup(ts->processes,
 328       GUINT_TO_POINTER(pid));
 329   if(process == NULL) process = create_process(tfs, NULL, pid);
 330   return process;
 331 }
 332
 333
 334 void exit_process(LttvTracefileState *tfs, LttvProcessState *process)
 335 {
 336   LttvTraceState *ts = LTTV_TRACE_STATE(tfs->parent.t_context);
 337
 338   g_hash_table_remove(ts->processes, GUINT_TO_POINTER(process->pid));
 339   g_array_free(process->interrupt_stack, TRUE);
 340   g_free(process);
 341 }
 342
 343
 344 void free_process_state(gpointer key, gpointer value, gpointer user_data)
 345 {
 346   g_array_free(((LttvProcessState *)value)->interrupt_stack, TRUE);
 347   g_free(value);
 348 }
 349
 350
 351 void remove_all_processes(GHashTable *processes)
 352 {
 353   g_hash_table_foreach(processes, free_process_state, NULL);
 354 }
 355
 356
 357 gboolean syscall_entry(void *hook_data, void *call_data)
 358 {
 359   LttField *f = (LttField *)hook_data;
 360
 361   LttvTracefileState *s = (LttvTracefileState *)call_data;
 362
 363   push_state(s, LTTV_STATE_SYSCALL, ltt_event_get_unsigned(
 364       LTTV_TRACEFILE_CONTEXT(s)->e, f));
 365   return FALSE;
 366 }
 367
 368
 369 gboolean syscall_exit(void *hook_data, void *call_data)
 370 {
 371   LttvTracefileState *s = (LttvTracefileState *)call_data;
 372
 373   pop_state(s, LTTV_STATE_SYSCALL);
 374   return FALSE;
 375 }
 376
 377
 378 gboolean trap_entry(void *hook_data, void *call_data)
 379 {
 380   LttField *f = (LttField *)hook_data;
 381
 382   LttvTracefileState *s = (LttvTracefileState *)call_data;
 383
 384   push_state(s, LTTV_STATE_TRAP, ltt_event_get_unsigned(s->parent.e, f));
 385   return FALSE;
 386 }
 387
 388
 389 gboolean trap_exit(void *hook_data, void *call_data)
 390 {
 391   LttvTracefileState *s = (LttvTracefileState *)call_data;
 392
 393   pop_state(s, LTTV_STATE_TRAP);
 394   return FALSE;
 395 }
 396
 397
 398 gboolean irq_entry(void *hook_data, void *call_data)
 399 {
 400   LttField *f = (LttField *)hook_data;
 401
 402   LttvTracefileState *s = (LttvTracefileState *)call_data;
 403
 404   /* Do something with the info about being in user or system mode when int? */
 405   push_state(s, LTTV_STATE_IRQ, ltt_event_get_unsigned(s->parent.e, f));
 406   return FALSE;
 407 }
 408
 409
 410 gboolean irq_exit(void *hook_data, void *call_data)
 411 {
 412   LttvTracefileState *s = (LttvTracefileState *)call_data;
 413
 414   pop_state(s, LTTV_STATE_IRQ);
 415   return FALSE;
 416 }
 417
 418
 419 gboolean schedchange(void *hook_data, void *call_data)
 420 {
 421   struct HookData *h = (struct HookData *)hook_data;
 422
 423   LttvTracefileState *s = (LttvTracefileState *)call_data;
 424
 425   guint pid_in, pid_out, state_out;
 426
 427   pid_in = ltt_event_get_int(s->parent.e, h->f1);
 428   pid_out = ltt_event_get_int(s->parent.e, h->f2);
 429   state_out = ltt_event_get_int(s->parent.e, h->f3);
 430   if(s->process != NULL) {
 431     if(state_out == 0) s->process->state->s = LTTV_STATE_WAIT_CPU;
 432     else if(s->process->state->s == LTTV_STATE_EXIT)
 433         exit_process(s, s->process);
 434     else s->process->state->s = LTTV_STATE_WAIT;
 435   }
 436   s->process = find_process(s, pid_in);
 437   s->process->state->s = LTTV_STATE_RUN;
 438   return FALSE;
 439 }
 440
 441
 442 gboolean process_fork(void *hook_data, void *call_data)
 443 {
 444   LttField *f = (LttField *)hook_data;
 445
 446   LttvTracefileState *s = (LttvTracefileState *)call_data;
 447
 448   guint child_pid;
 449
 450   child_pid = ltt_event_get_int(s->parent.e, f);
 451   create_process(s, s->process, child_pid);
 452   return FALSE;
 453 }
 454
 455
 456 gboolean process_exit(void *hook_data, void *call_data)
 457 {
 458   LttvTracefileState *s = (LttvTracefileState *)call_data;
 459
 460   if(s->process != NULL) {
 461     s->process->state->s = LTTV_STATE_EXIT;
 462   }
 463   return FALSE;
 464 }
 465
 466
 467 static LttField *
 468 find_field(LttEventType *et, const char *field)
 469 {
 470   LttType *t;
 471
 472   LttField *f;
 473
 474   guint i, nb;
 475
 476   char *name;
 477
 478   if(field == NULL) return NULL;
 479
 480   f = ltt_eventtype_field(et);
 481   t = ltt_eventtype_type(et);
 482   g_assert(ltt_type_class(t) == LTT_STRUCT);
 483   nb = ltt_type_member_number(t);
 484   for(i = 0 ; i < nb ; i++) {
 485     ltt_type_member_type(t, i, &name);
 486     if(strcmp(name, field) == 0) break;
 487   }
 488   g_assert(i < nb);
 489   return ltt_field_member(f, i);
 490 }
 491
 492
 493 static struct HookId
 494 find_hook(LttTrace *t, char *facility, char *event,
 495     char *field1, char *field2, char *field3, LttvHook h)
 496 {
 497   LttFacility *f;
 498
 499   LttEventType *et;
 500
 501   guint nb, pos, i;
 502
 503   struct HookId hook_id;
 504
 505   struct HookData hook_data, *phook_data;
 506
 507   char *name;
 508
 509   nb = ltt_trace_facility_find(t, facility, &pos);
 510   if(nb < 1) g_error("No %s facility", facility);
 511   f = ltt_trace_facility_get(t, pos);
 512   et = ltt_facility_eventtype_get_by_name(f, event);
 513   if(et == NULL) g_error("Event %s does not exist", event);
 514
 515   hook_id.id = *(ltt_eventtype_id(et)); /* CHECK */
 516   hook_id.h = h;
 517   hook_id.free_hook_data = FALSE;
 518   hook_data.f1 = find_field(et, field1);
 519   hook_data.f2 = find_field(et, field2);
 520   hook_data.f3 = find_field(et, field3);
 521   if(hook_data.f1 == NULL) hook_id.hook_data = NULL;
 522   else if(hook_data.f2 == NULL) hook_id.hook_data = hook_data.f1;
 523   else {
 524     phook_data = g_new(struct HookData, 1);
 525     *phook_data = hook_data;
 526     hook_id.hook_data = phook_data;
 527     hook_id.free_hook_data = TRUE;
 528   }
 529   return hook_id;
 530 }
 531
 532
 533 lttv_state_add_event_hooks(LttvTracesetState *self)
 534 {
 535   LttvTraceset *traceset = self->parent.ts;
 536
 537   guint i, j, k, nb_trace, nb_control, nb_per_cpu, nb_tracefile;
 538
 539   LttFacility *f;
 540
 541   LttEventType *et;
 542
 543   LttvTraceState *ts;
 544
 545   LttvTracefileState *tfs;
 546
 547   void *hook_data;
 548
 549   GArray *hooks;
 550
 551   struct HookId hook_id;
 552
 553   LttvAttributeValue val;
 554
 555   nb_trace = lttv_traceset_number(traceset);
 556   for(i = 0 ; i < nb_trace ; i++) {
 557     ts = (LttvTraceState *)self->parent.traces[i];
 558
 559     /* Find the eventtype id for the following events and register the
 560        associated by id hooks. */
 561
 562     hooks = g_array_new(FALSE, FALSE, sizeof(struct HookId));
 563     g_array_add(hooks, find_hook(ts->parent.t, "core","syscall_entry",
 564         "syscall_id", NULL, NULL, syscall_entry));
 565     g_array_add(hooks, find_hook(ts->parent.t, "core", "syscall_exit",
 566         NULL, NULL, NULL, syscall_exit));
 567     g_array_add(hooks, find_hook(ts->parent.t, "core", "trap_entry", "trap_id",
 568         NULL, NULL, trap_entry));
 569     g_array_add(hooks, find_hook(ts->parent.t, "core", "trap_exit", NULL, NULL,
 570         NULL, trap_exit));
 571     g_array_add(hooks, find_hook(ts->parent.t, "core", "irq_entry", "irq_id",
 572         NULL, NULL, irq_entry));
 573     g_array_add(hooks, find_hook(ts->parent.t, "core", "irq_exit", NULL, NULL,
 574         NULL, irq_exit));
 575     g_array_add(hooks, find_hook(ts->parent.t, "core", "schedchange",
 576         "in", "out", "out_state", schedchange));
 577     g_array_add(hooks, find_hook(ts->parent.t, "core", "process_fork",
 578         "child_pid", NULL, NULL, process_fork));
 579     g_array_add(hooks, find_hook(ts->parent.t, "core", "process_exit",
 580         NULL, NULL, NULL, process_exit));
 581
 582     /* Add these hooks to each before_event_by_id hooks list */
 583
 584     nb_control = ltt_trace_control_tracefile_number(ts->parent.t);
 585     nb_per_cpu = ltt_trace_control_tracefile_number(ts->parent.t);
 586     nb_tracefile = nb_control + nb_per_cpu;
 587     for(j = 0 ; j < nb_tracefile ; j++) {
 588       if(j < nb_control) {
 589         tfs = LTTV_TRACEFILE_STATE(ts->parent.control_tracefiles[j]);
 590       }
 591       else {
 592         tfs = LTTV_TRACEFILE_STATE(ts->parent.per_cpu_tracefiles[j]);
 593       }
 594
 595       for(k = 0 ; k < hooks->len ; k++) {
 596         hook_id = g_array_index(hooks, struct HookId, k);
 597         lttv_hooks_add(lttv_hooks_by_id_find(tfs->parent.before_event_by_id,
 598           hook_id.id), hook_id.h, hook_id.hook_data);
 599       }
 600     }
 601     lttv_attribute_find(self->parent.a, LTTV_STATE_HOOKS, LTTV_POINTER, &val);
 602     *(val.v_pointer) = hooks;
 603   }
 604 }
 605
 606
 607 lttv_state_remove_event_hooks(LttvTracesetState *self)
 608 {
 609   LttvTraceset *traceset = self->parent.ts;
 610
 611   guint i, j, k, nb_trace, nb_control, nb_per_cpu, nb_tracefile;
 612
 613   LttvTraceState *ts;
 614
 615   LttvTracefileState *tfs;
 616
 617   void *hook_data;
 618
 619   GArray *hooks;
 620
 621   struct HookId hook_id;
 622
 623   LttvAttributeValue val;
 624
 625   nb_trace = lttv_traceset_number(traceset);
 626   for(i = 0 ; i < nb_trace ; i++) {
 627     ts = LTTV_TRACE_STATE(self->parent.traces[i]);
 628     lttv_attribute_find(self->parent.a, LTTV_STATE_HOOKS, LTTV_POINTER, &val);
 629     hooks = *(val.v_pointer);
 630
 631     /* Add these hooks to each before_event_by_id hooks list */
 632
 633     nb_control = ltt_trace_control_tracefile_number(ts->parent.t);
 634     nb_per_cpu = ltt_trace_control_tracefile_number(ts->parent.t);
 635     nb_tracefile = nb_control + nb_per_cpu;
 636     for(j = 0 ; j < nb_tracefile ; j++) {
 637       if(j < nb_control) {
 638         tfs = LTTV_TRACEFILE_STATE(ts->parent.control_tracefiles[j]);
 639       }
 640       else {
 641         tfs = LTTV_TRACEFILE_STATE(ts->parent.per_cpu_tracefiles[j]);
 642       }
 643
 644       for(k = 0 ; k < hooks->len ; k++) {
 645         hook_id = g_array_index(hooks, struct HookId, k);
 646         lttv_hooks_remove_data(
 647             lttv_hooks_by_id_find(tfs->parent.before_event_by_id,
 648             hook_id.id), hook_id.h, hook_id.hook_data);
 649
 650       }
 651       for(k = 0 ; k < hooks->len ; k++) {
 652         hook_id = g_array_index(hooks, struct HookId, k);
 653         if(hook_id.free_hook_data) g_free(hook_id.hook_data);
 654       }
 655     }
 656     g_array_free(hooks, TRUE);
 657   }
 658 }
 659
 660
 661 void lttv_state_init(int argc, char **argv)
 662 {
 663   LTTV_STATE_UNNAMED = g_quark_from_string("unnamed");
 664   LTTV_STATE_USER_MODE = g_quark_from_string("user mode");
 665   LTTV_STATE_WAIT_FORK = g_quark_from_string("wait fork");
 666   LTTV_STATE_SYSCALL = g_quark_from_string("system call");
 667   LTTV_STATE_TRAP = g_quark_from_string("trap");
 668   LTTV_STATE_IRQ = g_quark_from_string("irq");
 669   LTTV_STATE_WAIT_CPU = g_quark_from_string("wait for cpu");
 670   LTTV_STATE_EXIT = g_quark_from_string("exiting");
 671   LTTV_STATE_WAIT = g_quark_from_string("wait for I/O");
 672   LTTV_STATE_RUN = g_quark_from_string("running");
 673   LTTV_STATE_HOOKS = g_quark_from_string("saved state hooks");
 674 }
 675
 676 void lttv_state_destroy()
 677 {
 678 }
 679
 680
 681
 682