ltt/branches/poly/lttv/lttv/state.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 #ifdef HAVE_CONFIG_H
  20 #include <config.h>
  21 #endif
  22
  23 #include <lttv/lttv.h>
  24 #include <lttv/module.h>
  25 #include <lttv/state.h>
  26 #include <ltt/facility.h>
  27 #include <ltt/trace.h>
  28 #include <ltt/event.h>
  29 #include <ltt/type.h>
  30 #include <stdio.h>
  31
  32 #define PREALLOCATED_EXECUTION_STACK 10
  33
  34 /* Facilities Quarks */
  35
  36 GQuark
  37     LTT_FACILITY_KERNEL,
  38     LTT_FACILITY_PROCESS;
  39
  40 /* Events Quarks */
  41
  42 GQuark
  43     LTT_EVENT_SYSCALL_ENTRY,
  44     LTT_EVENT_SYSCALL_EXIT,
  45     LTT_EVENT_TRAP_ENTRY,
  46     LTT_EVENT_TRAP_EXIT,
  47     LTT_EVENT_IRQ_ENTRY,
  48     LTT_EVENT_IRQ_EXIT,
  49     LTT_EVENT_SCHEDCHANGE,
  50     LTT_EVENT_FORK,
  51     LTT_EVENT_EXIT,
  52     LTT_EVENT_FREE;
  53
  54 /* Fields Quarks */
  55
  56 GQuark
  57     LTT_FIELD_SYSCALL_ID,
  58     LTT_FIELD_TRAP_ID,
  59     LTT_FIELD_IRQ_ID,
  60     LTT_FIELD_OUT,
  61     LTT_FIELD_IN,
  62     LTT_FIELD_OUT_STATE,
  63     LTT_FIELD_PARENT_PID,
  64     LTT_FIELD_CHILD_PID,
  65     LTT_FIELD_PID;
  66
  67 LttvExecutionMode
  68   LTTV_STATE_MODE_UNKNOWN,
  69   LTTV_STATE_USER_MODE,
  70   LTTV_STATE_SYSCALL,
  71   LTTV_STATE_TRAP,
  72   LTTV_STATE_IRQ;
  73
  74 LttvExecutionSubmode
  75   LTTV_STATE_SUBMODE_UNKNOWN,
  76   LTTV_STATE_SUBMODE_NONE;
  77
  78 LttvProcessStatus
  79   LTTV_STATE_UNNAMED,
  80   LTTV_STATE_WAIT_FORK,
  81   LTTV_STATE_WAIT_CPU,
  82   LTTV_STATE_EXIT,
  83   LTTV_STATE_ZOMBIE,
  84   LTTV_STATE_WAIT,
  85   LTTV_STATE_RUN;
  86
  87 static GQuark
  88   LTTV_STATE_TRACEFILES,
  89   LTTV_STATE_PROCESSES,
  90   LTTV_STATE_PROCESS,
  91   LTTV_STATE_EVENT,
  92   LTTV_STATE_SAVED_STATES,
  93   LTTV_STATE_SAVED_STATES_TIME,
  94   LTTV_STATE_TIME,
  95   LTTV_STATE_HOOKS,
  96   LTTV_STATE_NAME_TABLES,
  97   LTTV_STATE_TRACE_STATE_USE_COUNT;
  98
  99 static void create_max_time(LttvTraceState *tcs);
 100
 101 static void get_max_time(LttvTraceState *tcs);
 102
 103 static void free_max_time(LttvTraceState *tcs);
 104
 105 static void create_name_tables(LttvTraceState *tcs);
 106
 107 static void get_name_tables(LttvTraceState *tcs);
 108
 109 static void free_name_tables(LttvTraceState *tcs);
 110
 111 static void free_saved_state(LttvTraceState *tcs);
 112
 113 static void lttv_state_free_process_table(GHashTable *processes);
 114
 115
 116 void lttv_state_save(LttvTraceState *self, LttvAttribute *container)
 117 {
 118   LTTV_TRACE_STATE_GET_CLASS(self)->state_save(self, container);
 119 }
 120
 121
 122 void lttv_state_restore(LttvTraceState *self, LttvAttribute *container)
 123 {
 124   LTTV_TRACE_STATE_GET_CLASS(self)->state_restore(self, container);
 125 }
 126
 127
 128 void lttv_state_state_saved_free(LttvTraceState *self,
 129     LttvAttribute *container)
 130 {
 131   LTTV_TRACE_STATE_GET_CLASS(self)->state_saved_free(self, container);
 132 }
 133
 134
 135 guint process_hash(gconstpointer key)
 136 {
 137   guint pid = ((const LttvProcessState *)key)->pid;
 138   return (pid>>8 ^ pid>>4 ^ pid>>2 ^ pid) ;
 139 }
 140
 141
 142 /* If the hash table hash function is well distributed,
 143  * the process_equal should compare different pid */
 144 gboolean process_equal(gconstpointer a, gconstpointer b)
 145 {
 146   const LttvProcessState *process_a, *process_b;
 147   gboolean ret = TRUE;
 148
 149   process_a = (const LttvProcessState *)a;
 150   process_b = (const LttvProcessState *)b;
 151
 152   if(likely(process_a->pid != process_b->pid)) ret = FALSE;
 153   else if(likely(process_a->pid == 0 &&
 154                  process_a->last_cpu != process_b->last_cpu)) ret = FALSE;
 155
 156   return ret;
 157 }
 158
 159
 160 static void
 161 restore_init_state(LttvTraceState *self)
 162 {
 163   guint i, nb_tracefile;
 164
 165   LttvTracefileState *tfcs;
 166
 167   if(self->processes != NULL) lttv_state_free_process_table(self->processes);
 168   self->processes = g_hash_table_new(process_hash, process_equal);
 169   self->nb_event = 0;
 170
 171   nb_tracefile = self->parent.tracefiles->len;
 172
 173   for(i = 0 ; i < nb_tracefile ; i++) {
 174     tfcs =
 175       LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
 176                                           LttvTracefileContext*, i));
 177     ltt_trace_time_span_get(self->parent.t, &tfcs->parent.timestamp, NULL);
 178 //    tfcs->saved_position = 0;
 179     tfcs->process = lttv_state_create_process(tfcs, NULL,0);
 180     tfcs->process->state->s = LTTV_STATE_RUN;
 181     tfcs->process->last_cpu = tfcs->cpu_name;
 182     tfcs->process->last_cpu_index = ((LttvTracefileContext*)tfcs)->index;
 183   }
 184 }
 185
 186 static LttTime time_zero = {0,0};
 187
 188 static void
 189 init(LttvTracesetState *self, LttvTraceset *ts)
 190 {
 191   guint i, j, nb_trace, nb_tracefile;
 192
 193   LttvTraceContext *tc;
 194
 195   LttvTraceState *tcs;
 196
 197   LttvTracefileState *tfcs;
 198
 199   LttvAttributeValue v;
 200
 201   LTTV_TRACESET_CONTEXT_CLASS(g_type_class_peek(LTTV_TRACESET_CONTEXT_TYPE))->
 202       init((LttvTracesetContext *)self, ts);
 203
 204   nb_trace = lttv_traceset_number(ts);
 205   for(i = 0 ; i < nb_trace ; i++) {
 206     tc = self->parent.traces[i];
 207     tcs = LTTV_TRACE_STATE(tc);
 208     tcs->save_interval = LTTV_STATE_SAVE_INTERVAL;
 209     lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_TRACE_STATE_USE_COUNT,
 210         LTTV_UINT, &v);
 211     (*v.v_uint)++;
 212
 213     if(*(v.v_uint) == 1) {
 214       create_name_tables(tcs);
 215       create_max_time(tcs);
 216     }
 217     get_name_tables(tcs);
 218     get_max_time(tcs);
 219
 220     nb_tracefile = tc->tracefiles->len;
 221
 222     for(j = 0 ; j < nb_tracefile ; j++) {
 223       tfcs =
 224           LTTV_TRACEFILE_STATE(g_array_index(tc->tracefiles,
 225                                           LttvTracefileContext*, j));
 226       tfcs->cpu_name = ltt_tracefile_name(tfcs->parent.tf);
 227     }
 228     tcs->processes = NULL;
 229     restore_init_state(tcs);
 230   }
 231 }
 232
 233
 234 static void
 235 fini(LttvTracesetState *self)
 236 {
 237   guint i, nb_trace;
 238
 239   LttvTraceState *tcs;
 240
 241   LttvTracefileState *tfcs;
 242
 243   LttvAttributeValue v;
 244
 245   nb_trace = lttv_traceset_number(LTTV_TRACESET_CONTEXT(self)->ts);
 246   for(i = 0 ; i < nb_trace ; i++) {
 247     tcs = (LttvTraceState *)(LTTV_TRACESET_CONTEXT(self)->traces[i]);
 248     lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_TRACE_STATE_USE_COUNT,
 249         LTTV_UINT, &v);
 250
 251     g_assert(*(v.v_uint) != 0);
 252     (*v.v_uint)--;
 253
 254     if(*(v.v_uint) == 0) {
 255       free_name_tables(tcs);
 256       free_max_time(tcs);
 257       free_saved_state(tcs);
 258     }
 259     lttv_state_free_process_table(tcs->processes);
 260     tcs->processes = NULL;
 261   }
 262   LTTV_TRACESET_CONTEXT_CLASS(g_type_class_peek(LTTV_TRACESET_CONTEXT_TYPE))->
 263       fini((LttvTracesetContext *)self);
 264 }
 265
 266
 267 static LttvTracesetContext *
 268 new_traceset_context(LttvTracesetContext *self)
 269 {
 270   return LTTV_TRACESET_CONTEXT(g_object_new(LTTV_TRACESET_STATE_TYPE, NULL));
 271 }
 272
 273
 274 static LttvTraceContext *
 275 new_trace_context(LttvTracesetContext *self)
 276 {
 277   return LTTV_TRACE_CONTEXT(g_object_new(LTTV_TRACE_STATE_TYPE, NULL));
 278 }
 279
 280
 281 static LttvTracefileContext *
 282 new_tracefile_context(LttvTracesetContext *self)
 283 {
 284   return LTTV_TRACEFILE_CONTEXT(g_object_new(LTTV_TRACEFILE_STATE_TYPE, NULL));
 285 }
 286
 287
 288 /* Write the process state of the trace */
 289
 290 static void write_process_state(gpointer key, gpointer value,
 291     gpointer user_data)
 292 {
 293   LttvProcessState *process;
 294
 295   LttvExecutionState *es;
 296
 297   FILE *fp = (FILE *)user_data;
 298
 299   guint i;
 300
 301   process = (LttvProcessState *)value;
 302   fprintf(fp,
 303 "  <PROCESS CORE=%p PID=%u PPID=%u CTIME_S=%lu CTIME_NS=%lu NAME=\"%s\" CPU=\"%s\">\n",
 304       process, process->pid, process->ppid, process->creation_time.tv_sec,
 305       process->creation_time.tv_nsec, g_quark_to_string(process->name),
 306       g_quark_to_string(process->last_cpu));
 307
 308   for(i = 0 ; i < process->execution_stack->len; i++) {
 309     es = &g_array_index(process->execution_stack, LttvExecutionState, i);
 310     fprintf(fp, "    <ES MODE=\"%s\" SUBMODE=\"%s\" ENTRY_S=%lu ENTRY_NS=%lu",
 311             g_quark_to_string(es->t), g_quark_to_string(es->n),
 312             es->entry.tv_sec, es->entry.tv_nsec);
 313     fprintf(fp, " CHANGE_S=%lu CHANGE_NS=%lu STATUS=\"%s\"/>\n",
 314             es->change.tv_sec, es->change.tv_nsec, g_quark_to_string(es->s));
 315   }
 316   fprintf(fp, "  </PROCESS>\n");
 317 }
 318
 319
 320 void lttv_state_write(LttvTraceState *self, LttTime t, FILE *fp)
 321 {
 322   guint i, nb_tracefile, nb_block, offset;
 323   guint64 tsc;
 324
 325   LttvTracefileState *tfcs;
 326
 327   LttTracefile *tf;
 328
 329   LttEventPosition *ep;
 330
 331   ep = ltt_event_position_new();
 332
 333   fprintf(fp,"<PROCESS_STATE TIME_S=%lu TIME_NS=%lu>\n", t.tv_sec, t.tv_nsec);
 334
 335   g_hash_table_foreach(self->processes, write_process_state, fp);
 336
 337   nb_tracefile = self->parent.tracefiles->len;
 338
 339   for(i = 0 ; i < nb_tracefile ; i++) {
 340     tfcs =
 341           LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
 342                                           LttvTracefileContext*, i));
 343     fprintf(fp, "  <TRACEFILE PID=%u TIMESTAMP_S=%lu TIMESTAMP_NS=%lu",
 344         tfcs->process->pid, tfcs->parent.timestamp.tv_sec,
 345         tfcs->parent.timestamp.tv_nsec);
 346     LttEvent *e = ltt_tracefile_get_event(tfcs->parent.tf);
 347     if(e == NULL) fprintf(fp,"/>\n");
 348     else {
 349       ltt_event_position(e, ep);
 350       ltt_event_position_get(ep, &tf, &nb_block, &offset, &tsc);
 351       fprintf(fp, " BLOCK=%u OFFSET=%u TSC=%llu/>\n", nb_block, offset,
 352           tsc);
 353     }
 354   }
 355   g_free(ep);
 356   fprintf(fp,"</PROCESS_STATE>");
 357 }
 358
 359
 360 /* Copy each process from an existing hash table to a new one */
 361
 362 static void copy_process_state(gpointer key, gpointer value,gpointer user_data)
 363 {
 364   LttvProcessState *process, *new_process;
 365
 366   GHashTable *new_processes = (GHashTable *)user_data;
 367
 368   guint i;
 369
 370   process = (LttvProcessState *)value;
 371   new_process = g_new(LttvProcessState, 1);
 372   *new_process = *process;
 373   new_process->execution_stack = g_array_sized_new(FALSE, FALSE,
 374       sizeof(LttvExecutionState), PREALLOCATED_EXECUTION_STACK);
 375   new_process->execution_stack =
 376               g_array_set_size(new_process->execution_stack,
 377                   process->execution_stack->len);
 378   for(i = 0 ; i < process->execution_stack->len; i++) {
 379     g_array_index(new_process->execution_stack, LttvExecutionState, i) =
 380         g_array_index(process->execution_stack, LttvExecutionState, i);
 381   }
 382   new_process->state = &g_array_index(new_process->execution_stack,
 383       LttvExecutionState, new_process->execution_stack->len - 1);
 384   g_hash_table_insert(new_processes, new_process, new_process);
 385 }
 386
 387
 388 static GHashTable *lttv_state_copy_process_table(GHashTable *processes)
 389 {
 390   GHashTable *new_processes = g_hash_table_new(process_hash, process_equal);
 391
 392   g_hash_table_foreach(processes, copy_process_state, new_processes);
 393   return new_processes;
 394 }
 395
 396
 397 /* The saved state for each trace contains a member "processes", which
 398    stores a copy of the process table, and a member "tracefiles" with
 399    one entry per tracefile. Each tracefile has a "process" member pointing
 400    to the current process and a "position" member storing the tracefile
 401    position (needed to seek to the current "next" event. */
 402
 403 static void state_save(LttvTraceState *self, LttvAttribute *container)
 404 {
 405   guint i, nb_tracefile;
 406
 407   LttvTracefileState *tfcs;
 408
 409   LttvAttribute *tracefiles_tree, *tracefile_tree;
 410
 411   LttvAttributeType type;
 412
 413   LttvAttributeValue value;
 414
 415   LttvAttributeName name;
 416
 417   LttEventPosition *ep;
 418
 419   tracefiles_tree = lttv_attribute_find_subdir(container,
 420       LTTV_STATE_TRACEFILES);
 421
 422   value = lttv_attribute_add(container, LTTV_STATE_PROCESSES,
 423       LTTV_POINTER);
 424   *(value.v_pointer) = lttv_state_copy_process_table(self->processes);
 425
 426   nb_tracefile = self->parent.tracefiles->len;
 427
 428   for(i = 0 ; i < nb_tracefile ; i++) {
 429     tfcs =
 430           LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
 431                                           LttvTracefileContext*, i));
 432     tracefile_tree = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
 433     value = lttv_attribute_add(tracefiles_tree, i,
 434         LTTV_GOBJECT);
 435     *(value.v_gobject) = (GObject *)tracefile_tree;
 436     value = lttv_attribute_add(tracefile_tree, LTTV_STATE_PROCESS,
 437         LTTV_UINT);
 438     *(value.v_uint) = tfcs->process->pid;
 439     value = lttv_attribute_add(tracefile_tree, LTTV_STATE_EVENT,
 440         LTTV_POINTER);
 441     /* Only save the position of the tfs is in the pqueue */
 442     if(!g_tree_lookup(self->parent.ts_context->pqueue, &tfcs->parent)) {
 443       *(value.v_pointer) = NULL;
 444     } else {
 445       LttEvent *e = ltt_tracefile_get_event(tfcs->parent.tf);
 446       ep = ltt_event_position_new();
 447       ltt_event_position(e, ep);
 448       *(value.v_pointer) = ep;
 449
 450       guint nb_block, offset;
 451       guint64 tsc;
 452       LttTracefile *tf;
 453       ltt_event_position_get(ep, &tf, &nb_block, &offset, &tsc);
 454       g_debug("Block %u offset %u tsc %llu time %lu.%lu", nb_block, offset,
 455           tsc,
 456           tfcs->parent.timestamp.tv_sec, tfcs->parent.timestamp.tv_nsec);
 457     }
 458   }
 459 }
 460
 461
 462 static void state_restore(LttvTraceState *self, LttvAttribute *container)
 463 {
 464   guint i, nb_tracefile, pid;
 465
 466   LttvTracefileState *tfcs;
 467
 468   LttvAttribute *tracefiles_tree, *tracefile_tree;
 469
 470   LttvAttributeType type;
 471
 472   LttvAttributeValue value;
 473
 474   LttvAttributeName name;
 475
 476   LttEventPosition *ep;
 477
 478   LttvTracesetContext *tsc = self->parent.ts_context;
 479
 480   tracefiles_tree = lttv_attribute_find_subdir(container,
 481       LTTV_STATE_TRACEFILES);
 482
 483   type = lttv_attribute_get_by_name(container, LTTV_STATE_PROCESSES,
 484       &value);
 485   g_assert(type == LTTV_POINTER);
 486   lttv_state_free_process_table(self->processes);
 487   self->processes = lttv_state_copy_process_table(*(value.v_pointer));
 488
 489   nb_tracefile = self->parent.tracefiles->len;
 490
 491   for(i = 0 ; i < nb_tracefile ; i++) {
 492     tfcs =
 493           LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
 494                                           LttvTracefileContext*, i));
 495     type = lttv_attribute_get(tracefiles_tree, i, &name, &value);
 496     g_assert(type == LTTV_GOBJECT);
 497     tracefile_tree = *((LttvAttribute **)(value.v_gobject));
 498
 499     type = lttv_attribute_get_by_name(tracefile_tree, LTTV_STATE_PROCESS,
 500         &value);
 501     g_assert(type == LTTV_UINT);
 502     pid = *(value.v_uint);
 503     tfcs->process = lttv_state_find_process_or_create(tfcs, pid);
 504
 505     type = lttv_attribute_get_by_name(tracefile_tree, LTTV_STATE_EVENT,
 506         &value);
 507     g_assert(type == LTTV_POINTER);
 508     g_assert(*(value.v_pointer) != NULL);
 509     ep = *(value.v_pointer);
 510     g_assert(tfcs->parent.t_context != NULL);
 511
 512     g_tree_destroy(tsc->pqueue);
 513     tsc->pqueue = g_tree_new(compare_tracefile);
 514
 515     LttvTracefileContext *tfc = LTTV_TRACEFILE_CONTEXT(tfcs);
 516
 517     if(ep != NULL) {
 518       g_assert(ltt_tracefile_seek_position(tfc->tf, ep) == 0);
 519       tfc->timestamp = ltt_event_time(ltt_tracefile_get_event(tfc->tf));
 520       g_tree_insert(tsc->pqueue, tfc, tfc);
 521     } else {
 522       tfc->timestamp = ltt_time_infinite;
 523     }
 524   }
 525 }
 526
 527
 528 static void state_saved_free(LttvTraceState *self, LttvAttribute *container)
 529 {
 530   guint i, nb_tracefile;
 531
 532   LttvTracefileState *tfcs;
 533
 534   LttvAttribute *tracefiles_tree, *tracefile_tree;
 535
 536   LttvAttributeType type;
 537
 538   LttvAttributeValue value;
 539
 540   LttvAttributeName name;
 541
 542   LttEventPosition *ep;
 543
 544   tracefiles_tree = lttv_attribute_find_subdir(container,
 545       LTTV_STATE_TRACEFILES);
 546   g_object_ref(G_OBJECT(tracefiles_tree));
 547   lttv_attribute_remove_by_name(container, LTTV_STATE_TRACEFILES);
 548
 549   type = lttv_attribute_get_by_name(container, LTTV_STATE_PROCESSES,
 550       &value);
 551   g_assert(type == LTTV_POINTER);
 552   lttv_state_free_process_table(*(value.v_pointer));
 553   *(value.v_pointer) = NULL;
 554   lttv_attribute_remove_by_name(container, LTTV_STATE_PROCESSES);
 555
 556   nb_tracefile = self->parent.tracefiles->len;
 557
 558   for(i = 0 ; i < nb_tracefile ; i++) {
 559     tfcs =
 560           LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
 561                                           LttvTracefileContext*, i));
 562     type = lttv_attribute_get(tracefiles_tree, i, &name, &value);
 563     g_assert(type == LTTV_GOBJECT);
 564     tracefile_tree = *((LttvAttribute **)(value.v_gobject));
 565
 566     type = lttv_attribute_get_by_name(tracefile_tree, LTTV_STATE_EVENT,
 567         &value);
 568     g_assert(type == LTTV_POINTER);
 569     if(*(value.v_pointer) != NULL) g_free(*(value.v_pointer));
 570   }
 571   g_object_unref(G_OBJECT(tracefiles_tree));
 572 }
 573
 574
 575 static void free_saved_state(LttvTraceState *self)
 576 {
 577   guint i, nb;
 578
 579   LttvAttributeType type;
 580
 581   LttvAttributeValue value;
 582
 583   LttvAttributeName name;
 584
 585   LttvAttribute *saved_states;
 586
 587   saved_states = lttv_attribute_find_subdir(self->parent.t_a,
 588       LTTV_STATE_SAVED_STATES);
 589
 590   nb = lttv_attribute_get_number(saved_states);
 591   for(i = 0 ; i < nb ; i++) {
 592     type = lttv_attribute_get(saved_states, i, &name, &value);
 593     g_assert(type == LTTV_GOBJECT);
 594     state_saved_free(self, *((LttvAttribute **)value.v_gobject));
 595   }
 596
 597   lttv_attribute_remove_by_name(self->parent.t_a, LTTV_STATE_SAVED_STATES);
 598 }
 599
 600
 601 static void
 602 create_max_time(LttvTraceState *tcs)
 603 {
 604   LttvAttributeValue v;
 605
 606   lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_SAVED_STATES_TIME,
 607         LTTV_POINTER, &v);
 608   g_assert(*(v.v_pointer) == NULL);
 609   *(v.v_pointer) = g_new(LttTime,1);
 610   *((LttTime *)*(v.v_pointer)) = time_zero;
 611 }
 612
 613
 614 static void
 615 get_max_time(LttvTraceState *tcs)
 616 {
 617   LttvAttributeValue v;
 618
 619   lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_SAVED_STATES_TIME,
 620         LTTV_POINTER, &v);
 621   g_assert(*(v.v_pointer) != NULL);
 622   tcs->max_time_state_recomputed_in_seek = (LttTime *)*(v.v_pointer);
 623 }
 624
 625
 626 static void
 627 free_max_time(LttvTraceState *tcs)
 628 {
 629   LttvAttributeValue v;
 630
 631   lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_SAVED_STATES_TIME,
 632         LTTV_POINTER, &v);
 633   g_free(*(v.v_pointer));
 634   *(v.v_pointer) = NULL;
 635 }
 636
 637
 638 typedef struct _LttvNameTables {
 639  // FIXME  GQuark *eventtype_names;
 640   GQuark *syscall_names;
 641   GQuark *trap_names;
 642   GQuark *irq_names;
 643 } LttvNameTables;
 644
 645
 646 static void
 647 create_name_tables(LttvTraceState *tcs)
 648 {
 649   int i, nb;
 650
 651   GQuark f_name, e_name;
 652
 653   LttvTraceHook h;
 654
 655   LttvTraceHookByFacility *thf;
 656
 657   LttEventType *et;
 658
 659   LttType *t;
 660
 661   GString *fe_name = g_string_new("");
 662
 663   LttvNameTables *name_tables = g_new(LttvNameTables, 1);
 664
 665   LttvAttributeValue v;
 666
 667   lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_NAME_TABLES,
 668       LTTV_POINTER, &v);
 669   g_assert(*(v.v_pointer) == NULL);
 670   *(v.v_pointer) = name_tables;
 671 #if 0 // Use iteration over the facilities_by_name and then list all event
 672       // types of each facility
 673   nb = ltt_trace_eventtype_number(tcs->parent.t);
 674   name_tables->eventtype_names = g_new(GQuark, nb);
 675   for(i = 0 ; i < nb ; i++) {
 676     et = ltt_trace_eventtype_get(tcs->parent.t, i);
 677     e_name = ltt_eventtype_name(et);
 678     f_name = ltt_facility_name(ltt_eventtype_facility(et));
 679     g_string_printf(fe_name, "%s.%s", f_name, e_name);
 680     name_tables->eventtype_names[i] = g_quark_from_string(fe_name->str);
 681   }
 682 #endif //0
 683   if(lttv_trace_find_hook(tcs->parent.t,
 684       LTT_FACILITY_KERNEL, LTT_EVENT_SYSCALL_ENTRY,
 685       LTT_FIELD_SYSCALL_ID, 0, 0,
 686       NULL, &h))
 687     return;
 688
 689   thf = lttv_trace_hook_get_first(&h);
 690
 691   t = ltt_field_type(thf->f1);
 692   nb = ltt_type_element_number(t);
 693
 694   lttv_trace_hook_destroy(&h);
 695
 696   /* CHECK syscalls should be an enum but currently are not!
 697   name_tables->syscall_names = g_new(GQuark, nb);
 698
 699   for(i = 0 ; i < nb ; i++) {
 700     name_tables->syscall_names[i] = g_quark_from_string(
 701         ltt_enum_string_get(t, i));
 702   }
 703   */
 704
 705   name_tables->syscall_names = g_new(GQuark, 256);
 706   for(i = 0 ; i < 256 ; i++) {
 707     g_string_printf(fe_name, "syscall %d", i);
 708     name_tables->syscall_names[i] = g_quark_from_string(fe_name->str);
 709   }
 710
 711   if(lttv_trace_find_hook(tcs->parent.t, LTT_FACILITY_KERNEL,
 712         LTT_EVENT_TRAP_ENTRY,
 713         LTT_FIELD_TRAP_ID, 0, 0,
 714         NULL, &h))
 715     return;
 716
 717   thf = lttv_trace_hook_get_first(&h);
 718
 719   t = ltt_field_type(thf->f1);
 720   nb = ltt_type_element_number(t);
 721
 722   lttv_trace_hook_destroy(&h);
 723
 724   /*
 725   name_tables->trap_names = g_new(GQuark, nb);
 726   for(i = 0 ; i < nb ; i++) {
 727     name_tables->trap_names[i] = g_quark_from_string(
 728         ltt_enum_string_get(t, i));
 729   }
 730   */
 731
 732   name_tables->trap_names = g_new(GQuark, 256);
 733   for(i = 0 ; i < 256 ; i++) {
 734     g_string_printf(fe_name, "trap %d", i);
 735     name_tables->trap_names[i] = g_quark_from_string(fe_name->str);
 736   }
 737
 738   if(lttv_trace_find_hook(tcs->parent.t,
 739         LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY,
 740         LTT_FIELD_IRQ_ID, 0, 0,
 741         NULL, &h))
 742     return;
 743
 744   thf = lttv_trace_hook_get_first(&h);
 745
 746   t = ltt_field_type(thf->f1);
 747   nb = ltt_type_element_number(t);
 748
 749   lttv_trace_hook_destroy(&h);
 750
 751   /*
 752   name_tables->irq_names = g_new(GQuark, nb);
 753   for(i = 0 ; i < nb ; i++) {
 754     name_tables->irq_names[i] = g_quark_from_string(ltt_enum_string_get(t, i));
 755   }
 756   */
 757
 758   name_tables->irq_names = g_new(GQuark, 256);
 759   for(i = 0 ; i < 256 ; i++) {
 760     g_string_printf(fe_name, "irq %d", i);
 761     name_tables->irq_names[i] = g_quark_from_string(fe_name->str);
 762   }
 763
 764   g_string_free(fe_name, TRUE);
 765 }
 766
 767
 768 static void
 769 get_name_tables(LttvTraceState *tcs)
 770 {
 771   LttvNameTables *name_tables;
 772
 773   LttvAttributeValue v;
 774
 775   lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_NAME_TABLES,
 776         LTTV_POINTER, &v);
 777   g_assert(*(v.v_pointer) != NULL);
 778   name_tables = (LttvNameTables *)*(v.v_pointer);
 779   //tcs->eventtype_names = name_tables->eventtype_names;
 780   tcs->syscall_names = name_tables->syscall_names;
 781   tcs->trap_names = name_tables->trap_names;
 782   tcs->irq_names = name_tables->irq_names;
 783 }
 784
 785
 786 static void
 787 free_name_tables(LttvTraceState *tcs)
 788 {
 789   LttvNameTables *name_tables;
 790
 791   LttvAttributeValue v;
 792
 793   lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_NAME_TABLES,
 794         LTTV_POINTER, &v);
 795   name_tables = (LttvNameTables *)*(v.v_pointer);
 796   *(v.v_pointer) = NULL;
 797
 798  // g_free(name_tables->eventtype_names);
 799   g_free(name_tables->syscall_names);
 800   g_free(name_tables->trap_names);
 801   g_free(name_tables->irq_names);
 802   g_free(name_tables);
 803 }
 804
 805 static void push_state(LttvTracefileState *tfs, LttvExecutionMode t,
 806     guint state_id)
 807 {
 808   LttvExecutionState *es;
 809
 810   LttvProcessState *process = tfs->process;
 811
 812   guint depth = process->execution_stack->len;
 813
 814   process->execution_stack =
 815     g_array_set_size(process->execution_stack, depth + 1);
 816   /* Keep in sync */
 817   process->state =
 818     &g_array_index(process->execution_stack, LttvExecutionState, depth - 1);
 819
 820   es = &g_array_index(process->execution_stack, LttvExecutionState, depth);
 821   es->t = t;
 822   es->n = state_id;
 823   es->entry = es->change = tfs->parent.timestamp;
 824   es->s = process->state->s;
 825   process->state = es;
 826 }
 827
 828
 829 static void pop_state(LttvTracefileState *tfs, LttvExecutionMode t)
 830 {
 831   LttvProcessState *process = tfs->process;
 832
 833   guint depth = process->execution_stack->len;
 834
 835   if(process->state->t != t){
 836     g_info("Different execution mode type (%lu.%09lu): ignore it\n",
 837         tfs->parent.timestamp.tv_sec, tfs->parent.timestamp.tv_nsec);
 838     g_info("process state has %s when pop_int is %s\n",
 839                     g_quark_to_string(process->state->t),
 840                     g_quark_to_string(t));
 841     g_info("{ %u, %u, %s, %s }\n",
 842                     process->pid,
 843                     process->ppid,
 844                     g_quark_to_string(process->name),
 845                     g_quark_to_string(process->state->s));
 846     return;
 847   }
 848
 849   if(depth == 1){
 850     g_info("Trying to pop last state on stack (%lu.%09lu): ignore it\n",
 851         tfs->parent.timestamp.tv_sec, tfs->parent.timestamp.tv_nsec);
 852     return;
 853   }
 854
 855   process->execution_stack =
 856     g_array_set_size(process->execution_stack, depth - 1);
 857   process->state = &g_array_index(process->execution_stack, LttvExecutionState,
 858       depth - 2);
 859   process->state->change = tfs->parent.timestamp;
 860 }
 861
 862
 863 LttvProcessState *
 864 lttv_state_create_process(LttvTracefileState *tfs, LttvProcessState *parent,
 865     guint pid)
 866 {
 867   LttvProcessState *process = g_new(LttvProcessState, 1);
 868
 869   LttvExecutionState *es;
 870
 871   LttvTraceContext *tc;
 872
 873   LttvTraceState *tcs;
 874
 875   char buffer[128];
 876
 877   tc = tfs->parent.t_context;
 878   tcs = (LttvTraceState *)tc;
 879
 880   process->pid = pid;
 881   process->last_cpu = tfs->cpu_name;
 882   process->last_cpu_index = ((LttvTracefileContext*)tfs)->index;
 883   g_info("Process %u, core %p", process->pid, process);
 884   g_hash_table_insert(tcs->processes, process, process);
 885
 886   if(parent) {
 887     process->ppid = parent->pid;
 888     process->name = parent->name;
 889     process->creation_time = tfs->parent.timestamp;
 890   }
 891
 892   /* No parent. This process exists but we are missing all information about
 893      its creation. The birth time is set to zero but we remember the time of
 894      insertion */
 895
 896   else {
 897     process->ppid = 0;
 898     process->name = LTTV_STATE_UNNAMED;
 899     process->creation_time = ltt_time_zero;
 900   }
 901
 902   process->insertion_time = tfs->parent.timestamp;
 903   sprintf(buffer,"%d-%lu.%lu",pid, process->creation_time.tv_sec,
 904           process->creation_time.tv_nsec);
 905   process->pid_time = g_quark_from_string(buffer);
 906   process->last_cpu = tfs->cpu_name;
 907   process->last_cpu_index = ((LttvTracefileContext*)tfs)->index;
 908   process->execution_stack = g_array_sized_new(FALSE, FALSE,
 909       sizeof(LttvExecutionState), PREALLOCATED_EXECUTION_STACK);
 910   process->execution_stack = g_array_set_size(process->execution_stack, 1);
 911   es = process->state = &g_array_index(process->execution_stack,
 912       LttvExecutionState, 0);
 913   es->t = LTTV_STATE_USER_MODE;
 914   es->n = LTTV_STATE_SUBMODE_NONE;
 915   es->entry = tfs->parent.timestamp;
 916   g_assert(tfs->parent.timestamp.tv_sec != 0);
 917   es->change = tfs->parent.timestamp;
 918   es->s = LTTV_STATE_WAIT_FORK;
 919
 920   return process;
 921 }
 922
 923 LttvProcessState *lttv_state_find_process(LttvTracefileState *tfs,
 924     guint pid)
 925 {
 926   LttvProcessState key;
 927   LttvProcessState *process;
 928
 929   LttvTraceState* ts = (LttvTraceState*)tfs->parent.t_context;
 930
 931   key.pid = pid;
 932   key.last_cpu = tfs->cpu_name;
 933   process = g_hash_table_lookup(ts->processes, &key);
 934   return process;
 935 }
 936
 937 LttvProcessState *
 938 lttv_state_find_process_or_create(LttvTracefileState *tfs, guint pid)
 939 {
 940   LttvProcessState *process = lttv_state_find_process(tfs, pid);
 941
 942   if(unlikely(process == NULL)) process = lttv_state_create_process(tfs, NULL, pid);
 943   return process;
 944 }
 945
 946 /* FIXME : this function should be called when we receive an event telling that
 947  * release_task has been called in the kernel. In happens generally when
 948  * the parent waits for its child terminaison, but may also happen in special
 949  * cases in the child's exit : when the parent ignores its children SIGCCHLD or
 950  * has the flag SA_NOCLDWAIT. It can also happen when the child is part
 951  * of a killed thread ground, but isn't the leader.
 952  */
 953 static void exit_process(LttvTracefileState *tfs, LttvProcessState *process)
 954 {
 955   LttvTraceState *ts = LTTV_TRACE_STATE(tfs->parent.t_context);
 956   LttvProcessState key;
 957
 958   key.pid = process->pid;
 959   key.last_cpu = process->last_cpu;
 960   g_hash_table_remove(ts->processes, &key);
 961   g_array_free(process->execution_stack, TRUE);
 962   g_free(process);
 963 }
 964
 965
 966 static void free_process_state(gpointer key, gpointer value,gpointer user_data)
 967 {
 968   g_array_free(((LttvProcessState *)value)->execution_stack, TRUE);
 969   g_free(value);
 970 }
 971
 972
 973 static void lttv_state_free_process_table(GHashTable *processes)
 974 {
 975   g_hash_table_foreach(processes, free_process_state, NULL);
 976   g_hash_table_destroy(processes);
 977 }
 978
 979
 980 static gboolean syscall_entry(void *hook_data, void *call_data)
 981 {
 982   LttvTracefileState *s = (LttvTracefileState *)call_data;
 983   LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
 984   LttvTraceHookByFacility *thf = (LttvTraceHookByFacility *)hook_data;
 985   LttField *f = thf->f1;
 986
 987   LttvExecutionSubmode submode;
 988
 989   submode = ((LttvTraceState *)(s->parent.t_context))->syscall_names[
 990       ltt_event_get_unsigned(e, f)];
 991   push_state(s, LTTV_STATE_SYSCALL, submode);
 992   return FALSE;
 993 }
 994
 995
 996 static gboolean syscall_exit(void *hook_data, void *call_data)
 997 {
 998   LttvTracefileState *s = (LttvTracefileState *)call_data;
 999
1000   pop_state(s, LTTV_STATE_SYSCALL);
1001   return FALSE;
1002 }
1003
1004
1005 static gboolean trap_entry(void *hook_data, void *call_data)
1006 {
1007   LttvTracefileState *s = (LttvTracefileState *)call_data;
1008   LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
1009   LttvTraceHookByFacility *thf = (LttvTraceHookByFacility *)hook_data;
1010   LttField *f = thf->f1;
1011
1012   LttvExecutionSubmode submode;
1013
1014   submode = ((LttvTraceState *)(s->parent.t_context))->trap_names[
1015       ltt_event_get_unsigned(e, f)];
1016   push_state(s, LTTV_STATE_TRAP, submode);
1017   return FALSE;
1018 }
1019
1020
1021 static gboolean trap_exit(void *hook_data, void *call_data)
1022 {
1023   LttvTracefileState *s = (LttvTracefileState *)call_data;
1024
1025   pop_state(s, LTTV_STATE_TRAP);
1026   return FALSE;
1027 }
1028
1029
1030 static gboolean irq_entry(void *hook_data, void *call_data)
1031 {
1032   LttvTracefileState *s = (LttvTracefileState *)call_data;
1033   LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
1034   guint8 fac_id = ltt_event_facility_id(e);
1035   guint8 ev_id = ltt_event_eventtype_id(e);
1036   LttvTraceHookByFacility *thf = (LttvTraceHookByFacility *)hook_data;
1037  // g_assert(lttv_trace_hook_get_first((LttvTraceHook *)hook_data)->f1 != NULL);
1038   g_assert(thf->f1 != NULL);
1039  // g_assert(thf == lttv_trace_hook_get_first((LttvTraceHook *)hook_data));
1040   LttField *f = thf->f1;
1041
1042   LttvExecutionSubmode submode;
1043
1044   submode = ((LttvTraceState *)(s->parent.t_context))->irq_names[
1045       ltt_event_get_unsigned(e, f)];
1046
1047   /* Do something with the info about being in user or system mode when int? */
1048   push_state(s, LTTV_STATE_IRQ, submode);
1049   return FALSE;
1050 }
1051
1052
1053 static gboolean irq_exit(void *hook_data, void *call_data)
1054 {
1055   LttvTracefileState *s = (LttvTracefileState *)call_data;
1056
1057   pop_state(s, LTTV_STATE_IRQ);
1058   return FALSE;
1059 }
1060
1061
1062 static gboolean schedchange(void *hook_data, void *call_data)
1063 {
1064   LttvTracefileState *s = (LttvTracefileState *)call_data;
1065   LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
1066   LttvTraceHookByFacility *thf = (LttvTraceHookByFacility *)hook_data;
1067   guint pid_in, pid_out;
1068   gint state_out;
1069
1070   pid_out = ltt_event_get_unsigned(e, thf->f1);
1071   pid_in = ltt_event_get_unsigned(e, thf->f2);
1072   state_out = ltt_event_get_int(e, thf->f3);
1073
1074   if(likely(s->process != NULL)) {
1075
1076     /* We could not know but it was not the idle process executing.
1077        This should only happen at the beginning, before the first schedule
1078        event, and when the initial information (current process for each CPU)
1079        is missing. It is not obvious how we could, after the fact, compensate
1080        the wrongly attributed statistics. */
1081
1082     //This test only makes sense once the state is known and if there is no
1083     //missing events.
1084     //if(unlikely(s->process->pid != pid_out)) {
1085     //  g_assert(s->process->pid == 0);
1086     //}
1087
1088     if(unlikely(s->process->state->s == LTTV_STATE_EXIT)) {
1089       s->process->state->s = LTTV_STATE_ZOMBIE;
1090     } else {
1091       if(unlikely(state_out == 0)) s->process->state->s = LTTV_STATE_WAIT_CPU;
1092       else s->process->state->s = LTTV_STATE_WAIT;
1093     } /* FIXME : we do not remove process here, because the kernel
1094        * still has them : they may be zombies. We need to know
1095        * exactly when release_task is executed on the PID to
1096        * know when the zombie is destroyed.
1097        */
1098     //else
1099     //  exit_process(s, s->process);
1100
1101     s->process->state->change = s->parent.timestamp;
1102   }
1103   s->process = lttv_state_find_process_or_create(s, pid_in);
1104   s->process->state->s = LTTV_STATE_RUN;
1105   s->process->last_cpu = s->cpu_name;
1106   s->process->last_cpu_index = ((LttvTracefileContext*)s)->index;
1107   s->process->state->change = s->parent.timestamp;
1108   return FALSE;
1109 }
1110
1111 static gboolean process_fork(void *hook_data, void *call_data)
1112 {
1113   LttvTracefileState *s = (LttvTracefileState *)call_data;
1114   LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
1115   LttvTraceHookByFacility *thf = (LttvTraceHookByFacility *)hook_data;
1116   LttField *f;
1117   guint parent_pid;
1118   guint child_pid;
1119   LttvProcessState *zombie_process;
1120
1121   /* Parent PID */
1122   f = thf->f1;
1123   parent_pid = ltt_event_get_unsigned(e, f);
1124
1125   /* Child PID */
1126   f = thf->f2;
1127   child_pid = ltt_event_get_unsigned(e, f);
1128
1129   zombie_process = lttv_state_find_process(s, child_pid);
1130
1131   if(unlikely(zombie_process != NULL)) {
1132     /* Reutilisation of PID. Only now we are sure that the old PID
1133      * has been released. FIXME : should know when release_task happens instead.
1134      */
1135     exit_process(s, zombie_process);
1136   }
1137   g_assert(s->process->pid != child_pid);
1138   // FIXME : Add this test in the "known state" section
1139   // g_assert(s->process->pid == parent_pid);
1140   lttv_state_create_process(s, s->process, child_pid);
1141
1142   return FALSE;
1143 }
1144
1145
1146 static gboolean process_exit(void *hook_data, void *call_data)
1147 {
1148   LttvTracefileState *s = (LttvTracefileState *)call_data;
1149   LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
1150   LttvTraceHookByFacility *thf = (LttvTraceHookByFacility *)hook_data;
1151   LttField *f;
1152   guint pid;
1153
1154   pid = ltt_event_get_unsigned(e, thf->f1);
1155
1156   // FIXME : Add this test in the "known state" section
1157   // g_assert(s->process->pid == pid);
1158
1159   if(likely(s->process != NULL)) {
1160     s->process->state->s = LTTV_STATE_EXIT;
1161   }
1162   return FALSE;
1163 }
1164
1165 static gboolean process_free(void *hook_data, void *call_data)
1166 {
1167   LttvTracefileState *s = (LttvTracefileState *)call_data;
1168   LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
1169   LttvTraceHookByFacility *thf = (LttvTraceHookByFacility *)hook_data;
1170   guint release_pid;
1171   LttvProcessState *process;
1172
1173   /* PID of the process to release */
1174   release_pid = ltt_event_get_unsigned(e, thf->f1);
1175
1176   process = lttv_state_find_process(s, release_pid);
1177
1178   if(likely(process != NULL)) {
1179     /* release_task is happening at kernel level : we can now safely release
1180      * the data structure of the process */
1181     exit_process(s, process);
1182   }
1183
1184   return FALSE;
1185 }
1186
1187 gint lttv_state_hook_add_event_hooks(void *hook_data, void *call_data)
1188 {
1189   LttvTracesetState *tss = (LttvTracesetState*)(call_data);
1190
1191   lttv_state_add_event_hooks(tss);
1192
1193   return 0;
1194 }
1195
1196 void lttv_state_add_event_hooks(LttvTracesetState *self)
1197 {
1198   LttvTraceset *traceset = self->parent.ts;
1199
1200   guint i, j, k, l, nb_trace, nb_tracefile;
1201
1202   LttvTraceState *ts;
1203
1204   LttvTracefileState *tfs;
1205
1206   GArray *hooks;
1207
1208   LttvTraceHookByFacility *thf;
1209
1210   LttvTraceHook *hook;
1211
1212   LttvAttributeValue val;
1213
1214   gint ret;
1215
1216   nb_trace = lttv_traceset_number(traceset);
1217   for(i = 0 ; i < nb_trace ; i++) {
1218     ts = (LttvTraceState *)self->parent.traces[i];
1219
1220     /* Find the eventtype id for the following events and register the
1221        associated by id hooks. */
1222
1223     hooks = g_array_sized_new(FALSE, FALSE, sizeof(LttvTraceHook), 10);
1224     hooks = g_array_set_size(hooks, 10);
1225
1226     ret = lttv_trace_find_hook(ts->parent.t,
1227         LTT_FACILITY_KERNEL, LTT_EVENT_SYSCALL_ENTRY,
1228         LTT_FIELD_SYSCALL_ID, 0, 0,
1229         syscall_entry, &g_array_index(hooks, LttvTraceHook, 0));
1230     g_assert(!ret);
1231
1232     ret = lttv_trace_find_hook(ts->parent.t,
1233         LTT_FACILITY_KERNEL, LTT_EVENT_SYSCALL_EXIT,
1234         0, 0, 0,
1235         syscall_exit, &g_array_index(hooks, LttvTraceHook, 1));
1236     g_assert(!ret);
1237
1238     ret = lttv_trace_find_hook(ts->parent.t,
1239         LTT_FACILITY_KERNEL, LTT_EVENT_TRAP_ENTRY,
1240         LTT_FIELD_TRAP_ID, 0, 0,
1241         trap_entry, &g_array_index(hooks, LttvTraceHook, 2));
1242     g_assert(!ret);
1243
1244     ret = lttv_trace_find_hook(ts->parent.t,
1245         LTT_FACILITY_KERNEL, LTT_EVENT_TRAP_EXIT,
1246         0, 0, 0,
1247         trap_exit, &g_array_index(hooks, LttvTraceHook, 3));
1248     g_assert(!ret);
1249
1250     ret = lttv_trace_find_hook(ts->parent.t,
1251         LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY,
1252         LTT_FIELD_IRQ_ID, 0, 0,
1253         irq_entry, &g_array_index(hooks, LttvTraceHook, 4));
1254     g_assert(!ret);
1255
1256     ret = lttv_trace_find_hook(ts->parent.t,
1257         LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT,
1258         0, 0, 0,
1259         irq_exit, &g_array_index(hooks, LttvTraceHook, 5));
1260     g_assert(!ret);
1261
1262     ret = lttv_trace_find_hook(ts->parent.t,
1263         LTT_FACILITY_PROCESS, LTT_EVENT_SCHEDCHANGE,
1264         LTT_FIELD_OUT, LTT_FIELD_IN, LTT_FIELD_OUT_STATE,
1265         schedchange, &g_array_index(hooks, LttvTraceHook, 6));
1266     g_assert(!ret);
1267
1268     ret = lttv_trace_find_hook(ts->parent.t,
1269         LTT_FACILITY_PROCESS, LTT_EVENT_FORK,
1270         LTT_FIELD_PARENT_PID, LTT_FIELD_CHILD_PID, 0,
1271         process_fork, &g_array_index(hooks, LttvTraceHook, 7));
1272     g_assert(!ret);
1273
1274     ret = lttv_trace_find_hook(ts->parent.t,
1275         LTT_FACILITY_PROCESS, LTT_EVENT_EXIT,
1276         LTT_FIELD_PID, 0, 0,
1277         process_exit, &g_array_index(hooks, LttvTraceHook, 8));
1278     g_assert(!ret);
1279
1280     ret = lttv_trace_find_hook(ts->parent.t,
1281         LTT_FACILITY_PROCESS, LTT_EVENT_FREE,
1282         LTT_FIELD_PID, 0, 0,
1283         process_free, &g_array_index(hooks, LttvTraceHook, 9));
1284     g_assert(!ret);
1285
1286
1287     /* Add these hooks to each event_by_id hooks list */
1288
1289     nb_tracefile = ts->parent.tracefiles->len;
1290
1291     for(j = 0 ; j < nb_tracefile ; j++) {
1292       tfs =
1293           LTTV_TRACEFILE_STATE(g_array_index(ts->parent.tracefiles,
1294                                           LttvTracefileContext*, j));
1295
1296       for(k = 0 ; k < hooks->len ; k++) {
1297         hook = &g_array_index(hooks, LttvTraceHook, k);
1298         for(l=0;l<hook->fac_list->len;l++) {
1299           thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l);
1300           lttv_hooks_add(
1301             lttv_hooks_by_id_find(tfs->parent.event_by_id, thf->id),
1302             thf->h,
1303             thf,
1304             LTTV_PRIO_STATE);
1305         }
1306       }
1307     }
1308     lttv_attribute_find(self->parent.a, LTTV_STATE_HOOKS, LTTV_POINTER, &val);
1309     *(val.v_pointer) = hooks;
1310   }
1311 }
1312
1313 gint lttv_state_hook_remove_event_hooks(void *hook_data, void *call_data)
1314 {
1315   LttvTracesetState *tss = (LttvTracesetState*)(call_data);
1316
1317   lttv_state_remove_event_hooks(tss);
1318
1319   return 0;
1320 }
1321
1322 void lttv_state_remove_event_hooks(LttvTracesetState *self)
1323 {
1324   LttvTraceset *traceset = self->parent.ts;
1325
1326   guint i, j, k, l, nb_trace, nb_tracefile;
1327
1328   LttvTraceState *ts;
1329
1330   LttvTracefileState *tfs;
1331
1332   GArray *hooks;
1333
1334   LttvTraceHook *hook;
1335
1336   LttvTraceHookByFacility *thf;
1337
1338   LttvAttributeValue val;
1339
1340   nb_trace = lttv_traceset_number(traceset);
1341   for(i = 0 ; i < nb_trace ; i++) {
1342     ts = LTTV_TRACE_STATE(self->parent.traces[i]);
1343     lttv_attribute_find(self->parent.a, LTTV_STATE_HOOKS, LTTV_POINTER, &val);
1344     hooks = *(val.v_pointer);
1345
1346     /* Remove these hooks from each event_by_id hooks list */
1347
1348     nb_tracefile = ts->parent.tracefiles->len;
1349
1350     for(j = 0 ; j < nb_tracefile ; j++) {
1351       tfs =
1352           LTTV_TRACEFILE_STATE(g_array_index(ts->parent.tracefiles,
1353                                           LttvTracefileContext*, j));
1354
1355       for(k = 0 ; k < hooks->len ; k++) {
1356         hook = &g_array_index(hooks, LttvTraceHook, k);
1357         for(l=0;l<hook->fac_list->len;l++) {
1358           thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l);
1359
1360           lttv_hooks_remove_data(
1361             lttv_hooks_by_id_find(tfs->parent.event_by_id, thf->id),
1362                     thf->h,
1363                     thf);
1364         }
1365       }
1366     }
1367     for(k = 0 ; k < hooks->len ; k++)
1368       lttv_trace_hook_destroy(&g_array_index(hooks, LttvTraceHook, k));
1369     g_array_free(hooks, TRUE);
1370   }
1371 }
1372
1373
1374 static gboolean state_save_event_hook(void *hook_data, void *call_data)
1375 {
1376   guint *event_count = (guint*)hook_data;
1377
1378   /* Only save at LTTV_STATE_SAVE_INTERVAL */
1379   if(likely((*event_count)++ < LTTV_STATE_SAVE_INTERVAL))
1380     return FALSE;
1381   else
1382     event_count = 0;
1383
1384   LttvTracefileState *self = (LttvTracefileState *)call_data;
1385
1386   LttvTracefileState *tfcs;
1387
1388   LttvTraceState *tcs = (LttvTraceState *)(self->parent.t_context);
1389
1390   LttEventPosition *ep;
1391
1392   guint i;
1393
1394   LttTracefile *tf;
1395
1396   LttvAttribute *saved_states_tree, *saved_state_tree;
1397
1398   LttvAttributeValue value;
1399
1400   saved_states_tree = lttv_attribute_find_subdir(tcs->parent.t_a,
1401       LTTV_STATE_SAVED_STATES);
1402   saved_state_tree = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
1403   value = lttv_attribute_add(saved_states_tree,
1404       lttv_attribute_get_number(saved_states_tree), LTTV_GOBJECT);
1405   *(value.v_gobject) = (GObject *)saved_state_tree;
1406   value = lttv_attribute_add(saved_state_tree, LTTV_STATE_TIME, LTTV_TIME);
1407   *(value.v_time) = self->parent.timestamp;
1408   lttv_state_save(tcs, saved_state_tree);
1409   g_debug("Saving state at time %lu.%lu", self->parent.timestamp.tv_sec,
1410     self->parent.timestamp.tv_nsec);
1411
1412   *(tcs->max_time_state_recomputed_in_seek) = self->parent.timestamp;
1413
1414   return FALSE;
1415 }
1416
1417 #if 0
1418 static gboolean block_start(void *hook_data, void *call_data)
1419 {
1420   LttvTracefileState *self = (LttvTracefileState *)call_data;
1421
1422   LttvTracefileState *tfcs;
1423
1424   LttvTraceState *tcs = (LttvTraceState *)(self->parent.t_context);
1425
1426   LttEventPosition *ep;
1427
1428   guint i, nb_block, nb_event, nb_tracefile;
1429
1430   LttTracefile *tf;
1431
1432   LttvAttribute *saved_states_tree, *saved_state_tree;
1433
1434   LttvAttributeValue value;
1435
1436   ep = ltt_event_position_new();
1437
1438   nb_tracefile = tcs->parent.tracefiles->len;
1439
1440   /* Count the number of events added since the last block end in any
1441      tracefile. */
1442
1443   for(i = 0 ; i < nb_tracefile ; i++) {
1444     tfcs =
1445           LTTV_TRACEFILE_STATE(&g_array_index(tcs->parent.tracefiles,
1446                                           LttvTracefileContext, i));
1447     ltt_event_position(tfcs->parent.e, ep);
1448     ltt_event_position_get(ep, &nb_block, &nb_event, &tf);
1449     tcs->nb_event += nb_event - tfcs->saved_position;
1450     tfcs->saved_position = nb_event;
1451   }
1452   g_free(ep);
1453
1454   if(tcs->nb_event >= tcs->save_interval) {
1455     saved_states_tree = lttv_attribute_find_subdir(tcs->parent.t_a,
1456         LTTV_STATE_SAVED_STATES);
1457     saved_state_tree = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
1458     value = lttv_attribute_add(saved_states_tree,
1459         lttv_attribute_get_number(saved_states_tree), LTTV_GOBJECT);
1460     *(value.v_gobject) = (GObject *)saved_state_tree;
1461     value = lttv_attribute_add(saved_state_tree, LTTV_STATE_TIME, LTTV_TIME);
1462     *(value.v_time) = self->parent.timestamp;
1463     lttv_state_save(tcs, saved_state_tree);
1464     tcs->nb_event = 0;
1465     g_debug("Saving state at time %lu.%lu", self->parent.timestamp.tv_sec,
1466             self->parent.timestamp.tv_nsec);
1467   }
1468   *(tcs->max_time_state_recomputed_in_seek) = self->parent.timestamp;
1469   return FALSE;
1470 }
1471 #endif //0
1472
1473 #if 0
1474 static gboolean block_end(void *hook_data, void *call_data)
1475 {
1476   LttvTracefileState *self = (LttvTracefileState *)call_data;
1477
1478   LttvTraceState *tcs = (LttvTraceState *)(self->parent.t_context);
1479
1480   LttTracefile *tf;
1481
1482   LttEventPosition *ep;
1483
1484   guint nb_block, nb_event;
1485
1486   ep = ltt_event_position_new();
1487   ltt_event_position(self->parent.e, ep);
1488   ltt_event_position_get(ep, &nb_block, &nb_event, &tf);
1489   tcs->nb_event += nb_event - self->saved_position + 1;
1490   self->saved_position = 0;
1491   *(tcs->max_time_state_recomputed_in_seek) = self->parent.timestamp;
1492   g_free(ep);
1493
1494   return FALSE;
1495 }
1496 #endif //0
1497 #if 0
1498 void lttv_state_save_add_event_hooks(LttvTracesetState *self)
1499 {
1500   LttvTraceset *traceset = self->parent.ts;
1501
1502   guint i, j, nb_trace, nb_tracefile;
1503
1504   LttvTraceState *ts;
1505
1506   LttvTracefileState *tfs;
1507
1508   LttvTraceHook hook_start, hook_end;
1509
1510   nb_trace = lttv_traceset_number(traceset);
1511   for(i = 0 ; i < nb_trace ; i++) {
1512     ts = (LttvTraceState *)self->parent.traces[i];
1513
1514     lttv_trace_find_hook(ts->parent.t, "core","block_start",NULL,
1515         NULL, NULL, block_start, &hook_start);
1516     lttv_trace_find_hook(ts->parent.t, "core","block_end",NULL,
1517         NULL, NULL, block_end, &hook_end);
1518
1519     nb_tracefile = ts->parent.tracefiles->len;
1520
1521     for(j = 0 ; j < nb_tracefile ; j++) {
1522       tfs =
1523           LTTV_TRACEFILE_STATE(&g_array_index(ts->parent.tracefiles,
1524                                           LttvTracefileContext, j));
1525       lttv_hooks_add(lttv_hooks_by_id_find(tfs->parent.event_by_id,
1526                 hook_start.id), hook_start.h, NULL, LTTV_PRIO_STATE);
1527       lttv_hooks_add(lttv_hooks_by_id_find(tfs->parent.event_by_id,
1528                       hook_end.id), hook_end.h, NULL, LTTV_PRIO_STATE);
1529     }
1530   }
1531 }
1532 #endif //0
1533
1534 void lttv_state_save_add_event_hooks(LttvTracesetState *self)
1535 {
1536   LttvTraceset *traceset = self->parent.ts;
1537
1538   guint i, j, nb_trace, nb_tracefile;
1539
1540   LttvTraceState *ts;
1541
1542   LttvTracefileState *tfs;
1543
1544
1545   nb_trace = lttv_traceset_number(traceset);
1546   for(i = 0 ; i < nb_trace ; i++) {
1547
1548     ts = (LttvTraceState *)self->parent.traces[i];
1549     nb_tracefile = ts->parent.tracefiles->len;
1550
1551     guint *event_count = g_new(guint, 1);
1552     *event_count = 0;
1553
1554     for(j = 0 ; j < nb_tracefile ; j++) {
1555       tfs =
1556           LTTV_TRACEFILE_STATE(g_array_index(ts->parent.tracefiles,
1557                                           LttvTracefileContext*, j));
1558       lttv_hooks_add(tfs->parent.event,
1559                      state_save_event_hook,
1560                      event_count,
1561                      LTTV_PRIO_STATE);
1562
1563     }
1564   }
1565 }
1566
1567 gint lttv_state_save_hook_add_event_hooks(void *hook_data, void *call_data)
1568 {
1569   LttvTracesetState *tss = (LttvTracesetState*)(call_data);
1570
1571   lttv_state_save_add_event_hooks(tss);
1572
1573   return 0;
1574 }
1575
1576
1577 #if 0
1578 void lttv_state_save_remove_event_hooks(LttvTracesetState *self)
1579 {
1580   LttvTraceset *traceset = self->parent.ts;
1581
1582   guint i, j, nb_trace, nb_tracefile;
1583
1584   LttvTraceState *ts;
1585
1586   LttvTracefileState *tfs;
1587
1588   LttvTraceHook hook_start, hook_end;
1589
1590   nb_trace = lttv_traceset_number(traceset);
1591   for(i = 0 ; i < nb_trace ; i++) {
1592     ts = LTTV_TRACE_STATE(self->parent.traces[i]);
1593
1594     lttv_trace_find_hook(ts->parent.t, "core","block_start",NULL,
1595         NULL, NULL, block_start, &hook_start);
1596
1597     lttv_trace_find_hook(ts->parent.t, "core","block_end",NULL,
1598         NULL, NULL, block_end, &hook_end);
1599
1600     nb_tracefile = ts->parent.tracefiles->len;
1601
1602     for(j = 0 ; j < nb_tracefile ; j++) {
1603       tfs =
1604           LTTV_TRACEFILE_STATE(&g_array_index(ts->parent.tracefiles,
1605                                           LttvTracefileContext, j));
1606       lttv_hooks_remove_data(lttv_hooks_by_id_find(
1607           tfs->parent.event_by_id, hook_start.id), hook_start.h, NULL);
1608       lttv_hooks_remove_data(lttv_hooks_by_id_find(
1609           tfs->parent.event_by_id, hook_end.id), hook_end.h, NULL);
1610     }
1611   }
1612 }
1613 #endif //0
1614
1615 void lttv_state_save_remove_event_hooks(LttvTracesetState *self)
1616 {
1617   LttvTraceset *traceset = self->parent.ts;
1618
1619   guint i, j, nb_trace, nb_tracefile;
1620
1621   LttvTraceState *ts;
1622
1623   LttvTracefileState *tfs;
1624
1625
1626   nb_trace = lttv_traceset_number(traceset);
1627   for(i = 0 ; i < nb_trace ; i++) {
1628
1629     ts = (LttvTraceState *)self->parent.traces[i];
1630     nb_tracefile = ts->parent.tracefiles->len;
1631
1632     guint *event_count;
1633
1634     for(j = 0 ; j < nb_tracefile ; j++) {
1635       tfs =
1636           LTTV_TRACEFILE_STATE(g_array_index(ts->parent.tracefiles,
1637                                           LttvTracefileContext*, j));
1638       event_count = lttv_hooks_remove(tfs->parent.event,
1639                         state_save_event_hook);
1640       g_free(event_count);
1641
1642     }
1643   }
1644 }
1645
1646 gint lttv_state_save_hook_remove_event_hooks(void *hook_data, void *call_data)
1647 {
1648   LttvTracesetState *tss = (LttvTracesetState*)(call_data);
1649
1650   lttv_state_save_remove_event_hooks(tss);
1651
1652   return 0;
1653 }
1654
1655 void lttv_state_traceset_seek_time_closest(LttvTracesetState *self, LttTime t)
1656 {
1657   LttvTraceset *traceset = self->parent.ts;
1658
1659   guint i, nb_trace;
1660
1661   int min_pos, mid_pos, max_pos;
1662
1663   LttvTraceState *tcs;
1664
1665   LttvAttributeValue value;
1666
1667   LttvAttributeType type;
1668
1669   LttvAttributeName name;
1670
1671   LttvAttribute *saved_states_tree, *saved_state_tree, *closest_tree;
1672
1673   nb_trace = lttv_traceset_number(traceset);
1674   for(i = 0 ; i < nb_trace ; i++) {
1675     tcs = (LttvTraceState *)self->parent.traces[i];
1676
1677     if(ltt_time_compare(t, *(tcs->max_time_state_recomputed_in_seek)) < 0) {
1678       saved_states_tree = lttv_attribute_find_subdir(tcs->parent.t_a,
1679           LTTV_STATE_SAVED_STATES);
1680       min_pos = -1;
1681
1682       if(saved_states_tree) {
1683         max_pos = lttv_attribute_get_number(saved_states_tree) - 1;
1684         mid_pos = max_pos / 2;
1685         while(min_pos < max_pos) {
1686           type = lttv_attribute_get(saved_states_tree, mid_pos, &name, &value);
1687           g_assert(type == LTTV_GOBJECT);
1688           saved_state_tree = *((LttvAttribute **)(value.v_gobject));
1689           type = lttv_attribute_get_by_name(saved_state_tree, LTTV_STATE_TIME,
1690               &value);
1691           g_assert(type == LTTV_TIME);
1692           if(ltt_time_compare(*(value.v_time), t) < 0) {
1693             min_pos = mid_pos;
1694             closest_tree = saved_state_tree;
1695           }
1696           else max_pos = mid_pos - 1;
1697
1698           mid_pos = (min_pos + max_pos + 1) / 2;
1699         }
1700       }
1701
1702       /* restore the closest earlier saved state */
1703       if(min_pos != -1) {
1704         lttv_state_restore(tcs, closest_tree);
1705       }
1706
1707       /* There is no saved state, yet we want to have it. Restart at T0 */
1708       else {
1709         restore_init_state(tcs);
1710         lttv_process_trace_seek_time(&(tcs->parent), ltt_time_zero);
1711       }
1712     }
1713     /* We want to seek quickly without restoring/updating the state */
1714     else {
1715       restore_init_state(tcs);
1716       lttv_process_trace_seek_time(&(tcs->parent), t);
1717     }
1718   }
1719 }
1720
1721
1722 static void
1723 traceset_state_instance_init (GTypeInstance *instance, gpointer g_class)
1724 {
1725 }
1726
1727
1728 static void
1729 traceset_state_finalize (LttvTracesetState *self)
1730 {
1731   G_OBJECT_CLASS(g_type_class_peek(LTTV_TRACESET_CONTEXT_TYPE))->
1732       finalize(G_OBJECT(self));
1733 }
1734
1735
1736 static void
1737 traceset_state_class_init (LttvTracesetContextClass *klass)
1738 {
1739   GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
1740
1741   gobject_class->finalize = (void (*)(GObject *self)) traceset_state_finalize;
1742   klass->init = (void (*)(LttvTracesetContext *self, LttvTraceset *ts))init;
1743   klass->fini = (void (*)(LttvTracesetContext *self))fini;
1744   klass->new_traceset_context = new_traceset_context;
1745   klass->new_trace_context = new_trace_context;
1746   klass->new_tracefile_context = new_tracefile_context;
1747 }
1748
1749
1750 GType
1751 lttv_traceset_state_get_type(void)
1752 {
1753   static GType type = 0;
1754   if (type == 0) {
1755     static const GTypeInfo info = {
1756       sizeof (LttvTracesetStateClass),
1757       NULL,   /* base_init */
1758       NULL,   /* base_finalize */
1759       (GClassInitFunc) traceset_state_class_init,   /* class_init */
1760       NULL,   /* class_finalize */
1761       NULL,   /* class_data */
1762       sizeof (LttvTracesetState),
1763       0,      /* n_preallocs */
1764       (GInstanceInitFunc) traceset_state_instance_init,    /* instance_init */
1765       NULL    /* value handling */
1766     };
1767
1768     type = g_type_register_static (LTTV_TRACESET_CONTEXT_TYPE, "LttvTracesetStateType",
1769         &info, 0);
1770   }
1771   return type;
1772 }
1773
1774
1775 static void
1776 trace_state_instance_init (GTypeInstance *instance, gpointer g_class)
1777 {
1778 }
1779
1780
1781 static void
1782 trace_state_finalize (LttvTraceState *self)
1783 {
1784   G_OBJECT_CLASS(g_type_class_peek(LTTV_TRACE_CONTEXT_TYPE))->
1785       finalize(G_OBJECT(self));
1786 }
1787
1788
1789 static void
1790 trace_state_class_init (LttvTraceStateClass *klass)
1791 {
1792   GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
1793
1794   gobject_class->finalize = (void (*)(GObject *self)) trace_state_finalize;
1795   klass->state_save = state_save;
1796   klass->state_restore = state_restore;
1797   klass->state_saved_free = state_saved_free;
1798 }
1799
1800
1801 GType
1802 lttv_trace_state_get_type(void)
1803 {
1804   static GType type = 0;
1805   if (type == 0) {
1806     static const GTypeInfo info = {
1807       sizeof (LttvTraceStateClass),
1808       NULL,   /* base_init */
1809       NULL,   /* base_finalize */
1810       (GClassInitFunc) trace_state_class_init,   /* class_init */
1811       NULL,   /* class_finalize */
1812       NULL,   /* class_data */
1813       sizeof (LttvTraceState),
1814       0,      /* n_preallocs */
1815       (GInstanceInitFunc) trace_state_instance_init,    /* instance_init */
1816       NULL    /* value handling */
1817     };
1818
1819     type = g_type_register_static (LTTV_TRACE_CONTEXT_TYPE,
1820         "LttvTraceStateType", &info, 0);
1821   }
1822   return type;
1823 }
1824
1825
1826 static void
1827 tracefile_state_instance_init (GTypeInstance *instance, gpointer g_class)
1828 {
1829 }
1830
1831
1832 static void
1833 tracefile_state_finalize (LttvTracefileState *self)
1834 {
1835   G_OBJECT_CLASS(g_type_class_peek(LTTV_TRACEFILE_CONTEXT_TYPE))->
1836       finalize(G_OBJECT(self));
1837 }
1838
1839
1840 static void
1841 tracefile_state_class_init (LttvTracefileStateClass *klass)
1842 {
1843   GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
1844
1845   gobject_class->finalize = (void (*)(GObject *self)) tracefile_state_finalize;
1846 }
1847
1848
1849 GType
1850 lttv_tracefile_state_get_type(void)
1851 {
1852   static GType type = 0;
1853   if (type == 0) {
1854     static const GTypeInfo info = {
1855       sizeof (LttvTracefileStateClass),
1856       NULL,   /* base_init */
1857       NULL,   /* base_finalize */
1858       (GClassInitFunc) tracefile_state_class_init,   /* class_init */
1859       NULL,   /* class_finalize */
1860       NULL,   /* class_data */
1861       sizeof (LttvTracefileState),
1862       0,      /* n_preallocs */
1863       (GInstanceInitFunc) tracefile_state_instance_init,    /* instance_init */
1864       NULL    /* value handling */
1865     };
1866
1867     type = g_type_register_static (LTTV_TRACEFILE_CONTEXT_TYPE,
1868         "LttvTracefileStateType", &info, 0);
1869   }
1870   return type;
1871 }
1872
1873
1874 static void module_init()
1875 {
1876   LTTV_STATE_UNNAMED = g_quark_from_string("unnamed");
1877   LTTV_STATE_MODE_UNKNOWN = g_quark_from_string("unknown execution mode");
1878   LTTV_STATE_USER_MODE = g_quark_from_string("user mode");
1879   LTTV_STATE_WAIT_FORK = g_quark_from_string("wait fork");
1880   LTTV_STATE_SYSCALL = g_quark_from_string("system call");
1881   LTTV_STATE_TRAP = g_quark_from_string("trap");
1882   LTTV_STATE_IRQ = g_quark_from_string("irq");
1883   LTTV_STATE_SUBMODE_UNKNOWN = g_quark_from_string("unknown submode");
1884   LTTV_STATE_SUBMODE_NONE = g_quark_from_string("(no submode)");
1885   LTTV_STATE_WAIT_CPU = g_quark_from_string("wait for cpu");
1886   LTTV_STATE_EXIT = g_quark_from_string("exiting");
1887   LTTV_STATE_ZOMBIE = g_quark_from_string("zombie");
1888   LTTV_STATE_WAIT = g_quark_from_string("wait for I/O");
1889   LTTV_STATE_RUN = g_quark_from_string("running");
1890   LTTV_STATE_TRACEFILES = g_quark_from_string("tracefiles");
1891   LTTV_STATE_PROCESSES = g_quark_from_string("processes");
1892   LTTV_STATE_PROCESS = g_quark_from_string("process");
1893   LTTV_STATE_EVENT = g_quark_from_string("event");
1894   LTTV_STATE_SAVED_STATES = g_quark_from_string("saved states");
1895   LTTV_STATE_SAVED_STATES_TIME = g_quark_from_string("saved states time");
1896   LTTV_STATE_TIME = g_quark_from_string("time");
1897   LTTV_STATE_HOOKS = g_quark_from_string("saved state hooks");
1898   LTTV_STATE_NAME_TABLES = g_quark_from_string("name tables");
1899   LTTV_STATE_TRACE_STATE_USE_COUNT =
1900       g_quark_from_string("trace_state_use_count");
1901
1902
1903   LTT_FACILITY_KERNEL     = g_quark_from_string("kernel");
1904   LTT_FACILITY_PROCESS    = g_quark_from_string("process");
1905
1906
1907   LTT_EVENT_SYSCALL_ENTRY = g_quark_from_string("syscall_entry");
1908   LTT_EVENT_SYSCALL_EXIT  = g_quark_from_string("syscall_exit");
1909   LTT_EVENT_TRAP_ENTRY    = g_quark_from_string("trap_entry");
1910   LTT_EVENT_TRAP_EXIT     = g_quark_from_string("trap_exit");
1911   LTT_EVENT_IRQ_ENTRY     = g_quark_from_string("irq_entry");
1912   LTT_EVENT_IRQ_EXIT      = g_quark_from_string("irq_exit");
1913   LTT_EVENT_SCHEDCHANGE   = g_quark_from_string("schedchange");
1914   LTT_EVENT_FORK          = g_quark_from_string("fork");
1915   LTT_EVENT_EXIT          = g_quark_from_string("exit");
1916   LTT_EVENT_FREE          = g_quark_from_string("free");
1917
1918
1919   LTT_FIELD_SYSCALL_ID    = g_quark_from_string("syscall_id");
1920   LTT_FIELD_TRAP_ID       = g_quark_from_string("trap_id");
1921   LTT_FIELD_IRQ_ID        = g_quark_from_string("irq_id");
1922   LTT_FIELD_OUT           = g_quark_from_string("out");
1923   LTT_FIELD_IN            = g_quark_from_string("in");
1924   LTT_FIELD_OUT_STATE     = g_quark_from_string("out_state");
1925   LTT_FIELD_PARENT_PID    = g_quark_from_string("parent_pid");
1926   LTT_FIELD_CHILD_PID     = g_quark_from_string("child_pid");
1927   LTT_FIELD_PID           = g_quark_from_string("pid");
1928
1929 }
1930
1931 static void module_destroy()
1932 {
1933 }
1934
1935
1936 LTTV_MODULE("state", "State computation", \
1937     "Update the system state, possibly saving it at intervals", \
1938     module_init, module_destroy)
1939
1940
1941