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Add functions to open trace from the traceset
[lttv.git] / 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 #define _GNU_SOURCE
20 #ifdef HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23
24 #include <glib.h>
25 #include <lttv/lttv.h>
26 #include <lttv/module.h>
27 #include <lttv/state.h>
28 #include <ltt/trace.h>
29 #include <ltt/event.h>
30 #include <ltt/ltt.h>
31 #include <ltt/marker-desc.h>
32 #include <stdio.h>
33 #include <string.h>
34 #include <ltt/ltt-private.h>
35 #include <inttypes.h>
36
37 /* Comment :
38 * Mathieu Desnoyers
39 * usertrace is there only to be able to update the current CPU of the
40 * usertraces when there is a schedchange. it is a way to link the ProcessState
41 * to the associated usertrace. Link only created upon thread creation.
42 *
43 * The cpu id is necessary : it gives us back the current ProcessState when we
44 * are considering data from the usertrace.
45 */
46
47 #define PREALLOCATED_EXECUTION_STACK 10
48
49 /* Channel Quarks */
50
51 GQuark
52 LTT_CHANNEL_FD_STATE,
53 LTT_CHANNEL_GLOBAL_STATE,
54 LTT_CHANNEL_IRQ_STATE,
55 LTT_CHANNEL_MODULE_STATE,
56 LTT_CHANNEL_NETIF_STATE,
57 LTT_CHANNEL_SOFTIRQ_STATE,
58 LTT_CHANNEL_SWAP_STATE,
59 LTT_CHANNEL_SYSCALL_STATE,
60 LTT_CHANNEL_TASK_STATE,
61 LTT_CHANNEL_VM_STATE,
62 LTT_CHANNEL_KPROBE_STATE,
63 LTT_CHANNEL_FS,
64 LTT_CHANNEL_KERNEL,
65 LTT_CHANNEL_MM,
66 LTT_CHANNEL_USERSPACE,
67 LTT_CHANNEL_BLOCK;
68
69 /* Events Quarks */
70
71 GQuark
72 LTT_EVENT_SYSCALL_ENTRY,
73 LTT_EVENT_SYSCALL_EXIT,
74 LTT_EVENT_PAGE_FAULT_NOSEM_ENTRY,
75 LTT_EVENT_PAGE_FAULT_NOSEM_EXIT,
76 LTT_EVENT_PAGE_FAULT_ENTRY,
77 LTT_EVENT_PAGE_FAULT_EXIT,
78 LTT_EVENT_TRAP_ENTRY,
79 LTT_EVENT_TRAP_EXIT,
80 LTT_EVENT_IRQ_ENTRY,
81 LTT_EVENT_IRQ_EXIT,
82 LTT_EVENT_SOFT_IRQ_RAISE,
83 LTT_EVENT_SOFT_IRQ_ENTRY,
84 LTT_EVENT_SOFT_IRQ_EXIT,
85 LTT_EVENT_SCHED_SCHEDULE,
86 LTT_EVENT_SCHED_TRY_WAKEUP,
87 LTT_EVENT_PROCESS_FORK,
88 LTT_EVENT_KTHREAD_CREATE,
89 LTT_EVENT_PROCESS_EXIT,
90 LTT_EVENT_PROCESS_FREE,
91 LTT_EVENT_EXEC,
92 LTT_EVENT_PROCESS_STATE,
93 LTT_EVENT_STATEDUMP_END,
94 LTT_EVENT_FUNCTION_ENTRY,
95 LTT_EVENT_FUNCTION_EXIT,
96 LTT_EVENT_THREAD_BRAND,
97 LTT_EVENT_REQUEST_ISSUE,
98 LTT_EVENT_REQUEST_COMPLETE,
99 LTT_EVENT_LIST_INTERRUPT,
100 LTT_EVENT_SYS_CALL_TABLE,
101 LTT_EVENT_SOFTIRQ_VEC,
102 LTT_EVENT_KPROBE_TABLE,
103 LTT_EVENT_KPROBE,
104 LTT_EVENT_OPEN,
105 LTT_EVENT_READ,
106 LTT_EVENT_POLL_EVENT;
107
108 /* Fields Quarks */
109
110 GQuark
111 LTT_FIELD_SYSCALL_ID,
112 LTT_FIELD_TRAP_ID,
113 LTT_FIELD_IRQ_ID,
114 LTT_FIELD_SOFT_IRQ_ID,
115 LTT_FIELD_PREV_PID,
116 LTT_FIELD_NEXT_PID,
117 LTT_FIELD_PREV_STATE,
118 LTT_FIELD_PARENT_PID,
119 LTT_FIELD_CHILD_PID,
120 LTT_FIELD_PID,
121 LTT_FIELD_TGID,
122 LTT_FIELD_CHILD_TGID,
123 LTT_FIELD_FILENAME,
124 LTT_FIELD_NAME,
125 LTT_FIELD_TYPE,
126 LTT_FIELD_MODE,
127 LTT_FIELD_SUBMODE,
128 LTT_FIELD_STATUS,
129 LTT_FIELD_THIS_FN,
130 LTT_FIELD_CALL_SITE,
131 LTT_FIELD_MINOR,
132 LTT_FIELD_MAJOR,
133 LTT_FIELD_OPERATION,
134 LTT_FIELD_ACTION,
135 LTT_FIELD_ID,
136 LTT_FIELD_ADDRESS,
137 LTT_FIELD_SYMBOL,
138 LTT_FIELD_IP,
139 LTT_FIELD_FD,
140 LTT_FIELD_STATE,
141 LTT_FIELD_CPU_ID;
142
143 LttvExecutionMode
144 LTTV_STATE_MODE_UNKNOWN,
145 LTTV_STATE_USER_MODE,
146 LTTV_STATE_MAYBE_USER_MODE,
147 LTTV_STATE_SYSCALL,
148 LTTV_STATE_MAYBE_SYSCALL,
149 LTTV_STATE_TRAP,
150 LTTV_STATE_MAYBE_TRAP,
151 LTTV_STATE_IRQ,
152 LTTV_STATE_SOFT_IRQ;
153
154 LttvExecutionSubmode
155 LTTV_STATE_SUBMODE_UNKNOWN,
156 LTTV_STATE_SUBMODE_NONE;
157
158 LttvProcessStatus
159 LTTV_STATE_UNNAMED,
160 LTTV_STATE_WAIT_FORK,
161 LTTV_STATE_WAIT_CPU,
162 LTTV_STATE_EXIT,
163 LTTV_STATE_ZOMBIE,
164 LTTV_STATE_WAIT,
165 LTTV_STATE_RUN,
166 LTTV_STATE_DEAD;
167
168 GQuark
169 LTTV_STATE_UNBRANDED;
170
171 LttvProcessType
172 LTTV_STATE_USER_THREAD,
173 LTTV_STATE_KERNEL_THREAD;
174
175 LttvCPUMode
176 LTTV_CPU_UNKNOWN,
177 LTTV_CPU_IDLE,
178 LTTV_CPU_BUSY,
179 LTTV_CPU_IRQ,
180 LTTV_CPU_SOFT_IRQ,
181 LTTV_CPU_TRAP;
182
183 LttvIRQMode
184 LTTV_IRQ_UNKNOWN,
185 LTTV_IRQ_IDLE,
186 LTTV_IRQ_BUSY;
187
188 LttvBdevMode
189 LTTV_BDEV_UNKNOWN,
190 LTTV_BDEV_IDLE,
191 LTTV_BDEV_BUSY_READING,
192 LTTV_BDEV_BUSY_WRITING;
193
194 static GQuark
195 LTTV_STATE_TRACEFILES,
196 LTTV_STATE_PROCESSES,
197 LTTV_STATE_PROCESS,
198 LTTV_STATE_RUNNING_PROCESS,
199 LTTV_STATE_EVENT,
200 LTTV_STATE_SAVED_STATES,
201 LTTV_STATE_SAVED_STATES_TIME,
202 LTTV_STATE_TIME,
203 LTTV_STATE_HOOKS,
204 LTTV_STATE_NAME_TABLES,
205 LTTV_STATE_TRACE_STATE_USE_COUNT,
206 LTTV_STATE_RESOURCE_CPUS,
207 LTTV_STATE_RESOURCE_CPUS_COUNT,
208 LTTV_STATE_RESOURCE_IRQS,
209 LTTV_STATE_RESOURCE_SOFT_IRQS,
210 LTTV_STATE_RESOURCE_TRAPS,
211 LTTV_STATE_RESOURCE_BLKDEVS;
212
213 static void create_max_time(LttvTraceState *tcs);
214
215 static void get_max_time(LttvTraceState *tcs);
216
217 static void free_max_time(LttvTraceState *tcs);
218
219 static void create_name_tables(LttvTraceState *tcs);
220
221 static void get_name_tables(LttvTraceState *tcs);
222
223 static void free_name_tables(LttvTraceState *tcs);
224
225 static void free_saved_state(LttvTraceState *tcs);
226
227 static void lttv_state_free_process_table(GHashTable *processes);
228
229 static void lttv_trace_states_read_raw(LttvTraceState *tcs, FILE *fp,
230 GPtrArray *quarktable);
231
232 /* Resource function prototypes */
233 static LttvBdevState *get_hashed_bdevstate(LttvTraceState *ts, guint32 devcode);
234 static LttvBdevState *bdevstate_new(void);
235 static void bdevstate_free(LttvBdevState *);
236 static void bdevstate_free_cb(gpointer key, gpointer value, gpointer user_data);
237 static LttvBdevState *bdevstate_copy(LttvBdevState *bds);
238
239
240 #if (__WORDSIZE == 32)
241 guint guint64_hash(gconstpointer key)
242 {
243 guint64 ukey = *(const guint64 *)key;
244
245 return (guint)ukey ^ (guint)(ukey >> 32);
246 }
247
248 gboolean guint64_equal(gconstpointer a, gconstpointer b)
249 {
250 guint64 ua = *(const guint64 *)a;
251 guint64 ub = *(const guint64 *)b;
252
253 return ua == ub;
254 }
255 #endif
256
257 void lttv_state_save(LttvTraceState *self, LttvAttribute *container)
258 {
259 LTTV_TRACE_STATE_GET_CLASS(self)->state_save(self, container);
260 }
261
262
263 void lttv_state_restore(LttvTraceState *self, LttvAttribute *container)
264 {
265 LTTV_TRACE_STATE_GET_CLASS(self)->state_restore(self, container);
266 }
267
268
269 void lttv_state_state_saved_free(LttvTraceState *self,
270 LttvAttribute *container)
271 {
272 LTTV_TRACE_STATE_GET_CLASS(self)->state_saved_free(self, container);
273 }
274
275
276 guint process_hash(gconstpointer key)
277 {
278 guint pid = ((const LttvProcessState *)key)->pid;
279 return (pid>>8 ^ pid>>4 ^ pid>>2 ^ pid) ;
280 }
281
282
283 /* If the hash table hash function is well distributed,
284 * the process_equal should compare different pid */
285 gboolean process_equal(gconstpointer a, gconstpointer b)
286 {
287 const LttvProcessState *process_a, *process_b;
288 gboolean ret = TRUE;
289
290 process_a = (const LttvProcessState *)a;
291 process_b = (const LttvProcessState *)b;
292
293 if(likely(process_a->pid != process_b->pid)) ret = FALSE;
294 else if(likely(process_a->pid == 0 &&
295 process_a->cpu != process_b->cpu)) ret = FALSE;
296
297 return ret;
298 }
299
300 static void delete_usertrace(gpointer key, gpointer value, gpointer user_data)
301 {
302 g_tree_destroy((GTree*)value);
303 }
304
305 static void lttv_state_free_usertraces(GHashTable *usertraces)
306 {
307 g_hash_table_foreach(usertraces, delete_usertrace, NULL);
308 g_hash_table_destroy(usertraces);
309 }
310
311 gboolean rettrue(gpointer key, gpointer value, gpointer user_data)
312 {
313 return TRUE;
314 }
315
316 static guint check_expand(nb, id)
317 {
318 if(likely(nb > id))
319 return nb;
320 else
321 return max(id + 1, nb * 2);
322 }
323
324 static void expand_name_table(LttvTraceState *ts, GQuark **table,
325 guint nb, guint new_nb)
326 {
327 /* Expand an incomplete table */
328 GQuark *old_table = *table;
329 *table = g_new(GQuark, new_nb);
330 memcpy(*table, old_table, nb * sizeof(GQuark));
331 g_free(old_table);
332 }
333
334 static void fill_name_table(LttvTraceState *ts, GQuark *table, guint nb,
335 guint new_nb, const char *def_string)
336 {
337 guint i;
338 GString *fe_name = g_string_new("");
339 for(i = nb; i < new_nb; i++) {
340 g_string_printf(fe_name, "%s %d", def_string, i);
341 table[i] = g_quark_from_string(fe_name->str);
342 }
343 g_string_free(fe_name, TRUE);
344 }
345
346 static void expand_syscall_table(LttvTraceState *ts, int id)
347 {
348 LttvNameTables *nt = ts->name_tables;
349 guint new_nb;
350
351 new_nb = check_expand(nt->nb_syscalls, id);
352 if(likely(new_nb == nt->nb_syscalls))
353 return;
354 expand_name_table(ts, &nt->syscall_names, nt->nb_syscalls, new_nb);
355 fill_name_table(ts, nt->syscall_names, nt->nb_syscalls, new_nb, "syscall");
356 /* Update the table size */
357 nt->nb_syscalls = new_nb;
358 }
359
360 static void expand_kprobe_table(LttvTraceState *ts, guint64 ip, char *symbol)
361 {
362 LttvNameTables *nt = ts->name_tables;
363 #if (__WORDSIZE == 32)
364 guint64 *ip_ptr = g_new(guint64, 1);
365 g_hash_table_insert(nt->kprobe_hash, ip_ptr,
366 (gpointer)(glong)g_quark_from_string(symbol));
367 #else
368 g_hash_table_insert(nt->kprobe_hash, (gpointer)ip,
369 (gpointer)(glong)g_quark_from_string(symbol));
370 #endif
371 }
372
373 static void expand_trap_table(LttvTraceState *ts, int id)
374 {
375 LttvNameTables *nt = ts->name_tables;
376 LttvTrapState *old_table;
377 guint new_nb, i;
378
379 new_nb = check_expand(nt->nb_traps, id);
380 if(likely(new_nb == nt->nb_traps))
381 return;
382
383 expand_name_table(ts, &nt->trap_names, nt->nb_traps, new_nb);
384 fill_name_table(ts, nt->trap_names, nt->nb_traps, new_nb, "trap");
385
386 old_table = ts->trap_states;
387 ts->trap_states = g_new(LttvTrapState, new_nb);
388 memcpy(ts->trap_states, old_table, nt->nb_traps * sizeof(LttvTrapState));
389 g_free(old_table);
390 for(i = nt->nb_traps; i < new_nb; i++)
391 ts->trap_states[i].running = 0;
392
393 /* Update the table size */
394 nt->nb_traps = new_nb;
395 }
396
397 static void expand_irq_table(LttvTraceState *ts, int id)
398 {
399 LttvNameTables *nt = ts->name_tables;
400 LttvIRQState *old_table;
401 guint new_nb, i;
402
403 new_nb = check_expand(nt->nb_irqs, id);
404 if(likely(new_nb == nt->nb_irqs))
405 return;
406
407 expand_name_table(ts, &nt->irq_names, nt->nb_irqs, new_nb);
408 fill_name_table(ts, nt->irq_names, nt->nb_irqs, new_nb, "irq");
409
410 old_table = ts->irq_states;
411 ts->irq_states = g_new(LttvIRQState, new_nb);
412 memcpy(ts->irq_states, old_table, nt->nb_irqs * sizeof(LttvIRQState));
413 g_free(old_table);
414 for(i = nt->nb_irqs; i < new_nb; i++)
415 ts->irq_states[i].mode_stack =
416 g_array_new(FALSE, FALSE, sizeof(LttvIRQMode));
417
418 /* Update the table size */
419 nt->nb_irqs = new_nb;
420 }
421
422 static void expand_soft_irq_table(LttvTraceState *ts, int id)
423 {
424 LttvNameTables *nt = ts->name_tables;
425 LttvSoftIRQState *old_table;
426 guint new_nb, i;
427
428 new_nb = check_expand(nt->nb_soft_irqs, id);
429 if(likely(new_nb == nt->nb_soft_irqs))
430 return;
431
432 expand_name_table(ts, &nt->soft_irq_names, nt->nb_soft_irqs, new_nb);
433 fill_name_table(ts, nt->soft_irq_names, nt->nb_soft_irqs, new_nb, "softirq");
434
435 old_table = ts->soft_irq_states;
436 ts->soft_irq_states = g_new(LttvSoftIRQState, new_nb);
437 memcpy(ts->soft_irq_states, old_table,
438 nt->nb_soft_irqs * sizeof(LttvSoftIRQState));
439 g_free(old_table);
440 for(i = nt->nb_soft_irqs; i < new_nb; i++)
441 ts->soft_irq_states[i].running = 0;
442
443 /* Update the table size */
444 nt->nb_soft_irqs = new_nb;
445 }
446
447 static void restore_init_state(LttvTraceState *self)
448 {
449 guint i, nb_cpus, nb_irqs, nb_soft_irqs, nb_traps;
450
451 //LttvTracefileState *tfcs;
452
453 LttTime start_time, end_time;
454
455 /* Free the process tables */
456 if(self->processes != NULL) lttv_state_free_process_table(self->processes);
457 if(self->usertraces != NULL) lttv_state_free_usertraces(self->usertraces);
458 self->processes = g_hash_table_new(process_hash, process_equal);
459 self->usertraces = g_hash_table_new(g_direct_hash, g_direct_equal);
460 self->nb_event = 0;
461
462 /* Seek time to beginning */
463 // Mathieu : fix : don't seek traceset here : causes inconsistency in seek
464 // closest. It's the tracecontext job to seek the trace to the beginning
465 // anyway : the init state might be used at the middle of the trace as well...
466 //g_tree_destroy(self->parent.ts_context->pqueue);
467 //self->parent.ts_context->pqueue = g_tree_new(compare_tracefile);
468
469 ltt_trace_time_span_get(self->parent.t, &start_time, &end_time);
470
471 //lttv_process_trace_seek_time(&self->parent, ltt_time_zero);
472
473 nb_cpus = ltt_trace_get_num_cpu(self->parent.t);
474 nb_irqs = self->name_tables->nb_irqs;
475 nb_soft_irqs = self->name_tables->nb_soft_irqs;
476 nb_traps = self->name_tables->nb_traps;
477
478 /* Put the per cpu running_process to beginning state : process 0. */
479 for(i=0; i< nb_cpus; i++) {
480 LttvExecutionState *es;
481 self->running_process[i] = lttv_state_create_process(self, NULL, i, 0, 0,
482 LTTV_STATE_UNNAMED, &start_time);
483 /* We are not sure is it's a kernel thread or normal thread, put the
484 * bottom stack state to unknown */
485 self->running_process[i]->execution_stack =
486 g_array_set_size(self->running_process[i]->execution_stack, 1);
487 es = self->running_process[i]->state =
488 &g_array_index(self->running_process[i]->execution_stack,
489 LttvExecutionState, 0);
490 es->t = LTTV_STATE_MODE_UNKNOWN;
491 es->s = LTTV_STATE_UNNAMED;
492
493 //self->running_process[i]->state->s = LTTV_STATE_RUN;
494 self->running_process[i]->cpu = i;
495
496 /* reset cpu states */
497 if(self->cpu_states[i].mode_stack->len > 0) {
498 g_array_remove_range(self->cpu_states[i].mode_stack, 0,
499 self->cpu_states[i].mode_stack->len);
500 if(self->cpu_states[i].irq_stack->len)
501 g_array_remove_range(self->cpu_states[i].irq_stack, 0,
502 self->cpu_states[i].irq_stack->len);
503 if(self->cpu_states[i].softirq_stack->len)
504 g_array_remove_range(self->cpu_states[i].softirq_stack, 0,
505 self->cpu_states[i].softirq_stack->len);
506 if(self->cpu_states[i].trap_stack->len)
507 g_array_remove_range(self->cpu_states[i].trap_stack, 0,
508 self->cpu_states[i].trap_stack->len);
509 }
510 }
511
512 /* reset irq states */
513 for(i=0; i<nb_irqs; i++) {
514 if(self->irq_states[i].mode_stack->len > 0)
515 g_array_remove_range(self->irq_states[i].mode_stack, 0,
516 self->irq_states[i].mode_stack->len);
517 }
518
519 /* reset softirq states */
520 for(i=0; i<nb_soft_irqs; i++) {
521 self->soft_irq_states[i].pending = 0;
522 self->soft_irq_states[i].running = 0;
523 }
524
525 /* reset trap states */
526 for(i=0; i<nb_traps; i++) {
527 self->trap_states[i].running = 0;
528 }
529
530 /* reset bdev states */
531 g_hash_table_foreach(self->bdev_states, bdevstate_free_cb, NULL);
532 //g_hash_table_steal_all(self->bdev_states);
533 g_hash_table_foreach_steal(self->bdev_states, rettrue, NULL);
534
535 #if 0
536 nb_tracefile = self->parent.tracefiles->len;
537
538 for(i = 0 ; i < nb_tracefile ; i++) {
539 tfcs =
540 LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
541 LttvTracefileContext*, i));
542 ltt_trace_time_span_get(self->parent.t, &tfcs->parent.timestamp, NULL);
543 // tfcs->saved_position = 0;
544 tfcs->process = lttv_state_create_process(tfcs, NULL,0);
545 tfcs->process->state->s = LTTV_STATE_RUN;
546 tfcs->process->last_cpu = tfcs->cpu_name;
547 tfcs->process->last_cpu_index = ltt_tracefile_num(((LttvTracefileContext*)tfcs)->tf);
548 }
549 #endif //0
550 }
551
552 //static LttTime time_zero = {0,0};
553
554 static gint compare_usertraces(gconstpointer a, gconstpointer b,
555 gpointer user_data)
556 {
557 const LttTime *t1 = (const LttTime *)a;
558 const LttTime *t2 = (const LttTime *)b;
559
560 return ltt_time_compare(*t1, *t2);
561 }
562
563 static void free_usertrace_key(gpointer data)
564 {
565 g_free(data);
566 }
567
568 #define MAX_STRING_LEN 4096
569
570 static void state_load_saved_states(LttvTraceState *tcs)
571 {
572 FILE *fp;
573 GPtrArray *quarktable;
574 const char *trace_path;
575 char path[PATH_MAX];
576 guint count;
577 guint i;
578 tcs->has_precomputed_states = FALSE;
579 GQuark q;
580 gchar *string;
581 gint hdr;
582 gchar buf[MAX_STRING_LEN];
583 guint len;
584 size_t res;
585
586 trace_path = g_quark_to_string(ltt_trace_name(tcs->parent.t));
587 strncpy(path, trace_path, PATH_MAX-1);
588 count = strnlen(trace_path, PATH_MAX-1);
589 // quarktable : open, test
590 strncat(path, "/precomputed/quarktable", PATH_MAX-count-1);
591 fp = fopen(path, "r");
592 if(!fp) return;
593 quarktable = g_ptr_array_sized_new(4096);
594
595 /* Index 0 is null */
596 hdr = fgetc(fp);
597 if(hdr == EOF) return;
598 g_assert(hdr == HDR_QUARKS);
599 q = 1;
600 do {
601 hdr = fgetc(fp);
602 if(hdr == EOF) break;
603 g_assert(hdr == HDR_QUARK);
604 g_ptr_array_set_size(quarktable, q+1);
605 i=0;
606 while(1) {
607 res = fread(&buf[i], sizeof(gchar), 1, fp);
608 g_assert(res == 1);
609 if(buf[i] == '\0' || feof(fp)) break;
610 i++;
611 }
612 len = strnlen(buf, MAX_STRING_LEN-1);
613 g_ptr_array_index (quarktable, q) = g_new(gchar, len+1);
614 strncpy(g_ptr_array_index (quarktable, q), buf, len+1);
615 q++;
616 } while(1);
617
618 fclose(fp);
619
620 // saved_states : open, test
621 strncpy(path, trace_path, PATH_MAX-1);
622 count = strnlen(trace_path, PATH_MAX-1);
623 strncat(path, "/precomputed/states", PATH_MAX-count-1);
624 fp = fopen(path, "r");
625 if(!fp) return;
626
627 hdr = fgetc(fp);
628 if(hdr != HDR_TRACE) goto end;
629
630 lttv_trace_states_read_raw(tcs, fp, quarktable);
631
632 tcs->has_precomputed_states = TRUE;
633
634 end:
635 fclose(fp);
636
637 /* Free the quarktable */
638 for(i=0; i<quarktable->len; i++) {
639 string = g_ptr_array_index (quarktable, i);
640 g_free(string);
641 }
642 g_ptr_array_free(quarktable, TRUE);
643 return;
644 }
645
646 static void init(LttvTracesetState *self, LttvTraceset *ts)
647 {
648 guint i, j, nb_trace, nb_tracefile, nb_cpu;
649 guint64 nb_irq;
650
651 LttvTraceContext *tc;
652
653 LttvTraceState *tcs;
654
655 LttvTracefileState *tfcs;
656
657 LttvAttributeValue v;
658
659 LTTV_TRACESET_CONTEXT_CLASS(g_type_class_peek(LTTV_TRACESET_CONTEXT_TYPE))->
660 init((LttvTracesetContext *)self, ts);
661
662 nb_trace = lttv_traceset_number(ts);
663
664 #ifdef BABEL_CLEANUP
665 for(i = 0 ; i < nb_trace ; i++) {
666 tc = self->parent.traces[i];
667 tcs = LTTV_TRACE_STATE(tc);
668 tcs->save_interval = LTTV_STATE_SAVE_INTERVAL;
669 lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_TRACE_STATE_USE_COUNT,
670 LTTV_UINT, &v);
671 (*v.v_uint)++;
672
673 if(*(v.v_uint) == 1) {
674 create_name_tables(tcs);
675 create_max_time(tcs);
676 }
677 get_name_tables(tcs);
678 get_max_time(tcs);
679
680 nb_tracefile = tc->tracefiles->len;
681 nb_cpu = ltt_trace_get_num_cpu(tc->t);
682 nb_irq = tcs->name_tables->nb_irqs;
683 tcs->processes = NULL;
684 tcs->usertraces = NULL;
685 tcs->running_process = g_new(LttvProcessState*, nb_cpu);
686
687 /* init cpu resource stuff */
688 tcs->cpu_states = g_new(LttvCPUState, nb_cpu);
689 for(j = 0; j<nb_cpu; j++) {
690 tcs->cpu_states[j].mode_stack = g_array_new(FALSE, FALSE, sizeof(LttvCPUMode));
691 tcs->cpu_states[j].irq_stack = g_array_new(FALSE, FALSE, sizeof(gint));
692 tcs->cpu_states[j].softirq_stack = g_array_new(FALSE, FALSE, sizeof(gint));
693 tcs->cpu_states[j].trap_stack = g_array_new(FALSE, FALSE, sizeof(gint));
694 g_assert(tcs->cpu_states[j].mode_stack != NULL);
695 }
696
697 /* init irq resource stuff */
698 tcs->irq_states = g_new(LttvIRQState, nb_irq);
699 for(j = 0; j<nb_irq; j++) {
700 tcs->irq_states[j].mode_stack = g_array_new(FALSE, FALSE, sizeof(LttvIRQMode));
701 g_assert(tcs->irq_states[j].mode_stack != NULL);
702 }
703
704 /* init soft irq stuff */
705 /* the kernel has a statically fixed max of 32 softirqs */
706 tcs->soft_irq_states = g_new(LttvSoftIRQState, tcs->name_tables->nb_soft_irqs);
707
708 /* init trap stuff */
709 tcs->trap_states = g_new(LttvTrapState, tcs->name_tables->nb_traps);
710
711 /* init bdev resource stuff */
712 tcs->bdev_states = g_hash_table_new(g_int_hash, g_int_equal);
713
714 restore_init_state(tcs);
715 for(j = 0 ; j < nb_tracefile ; j++) {
716 tfcs =
717 LTTV_TRACEFILE_STATE(g_array_index(tc->tracefiles,
718 LttvTracefileContext*, j));
719 tfcs->tracefile_name = ltt_tracefile_name(tfcs->parent.tf);
720 tfcs->cpu = ltt_tracefile_cpu(tfcs->parent.tf);
721 tfcs->cpu_state = &(tcs->cpu_states[tfcs->cpu]);
722 if(ltt_tracefile_tid(tfcs->parent.tf) != 0) {
723 /* It's a Usertrace */
724 guint tid = ltt_tracefile_tid(tfcs->parent.tf);
725 GTree *usertrace_tree = (GTree*)g_hash_table_lookup(tcs->usertraces,
726 GUINT_TO_POINTER(tid));
727 if(!usertrace_tree) {
728 usertrace_tree = g_tree_new_full(compare_usertraces,
729 NULL, free_usertrace_key, NULL);
730 g_hash_table_insert(tcs->usertraces,
731 GUINT_TO_POINTER(tid), usertrace_tree);
732 }
733 LttTime *timestamp = g_new(LttTime, 1);
734 *timestamp = ltt_interpolate_time_from_tsc(tfcs->parent.tf,
735 ltt_tracefile_creation(tfcs->parent.tf));
736 g_tree_insert(usertrace_tree, timestamp, tfcs);
737 }
738 }
739
740 /* See if the trace has saved states */
741 state_load_saved_states(tcs);
742 }
743 #endif
744 }
745
746 static void fini(LttvTracesetState *self)
747 {
748 #ifdef BABEL_CLEANUP
749 guint i, nb_trace;
750
751 LttvTraceState *tcs;
752
753 //LttvTracefileState *tfcs;
754
755 LttvAttributeValue v;
756
757 nb_trace = lttv_traceset_number(LTTV_TRACESET_CONTEXT(self)->ts);
758 for(i = 0 ; i < nb_trace ; i++) {
759 tcs = (LttvTraceState *)(LTTV_TRACESET_CONTEXT(self)->traces[i]);
760 lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_TRACE_STATE_USE_COUNT,
761 LTTV_UINT, &v);
762
763 g_assert(*(v.v_uint) != 0);
764 (*v.v_uint)--;
765
766 if(*(v.v_uint) == 0) {
767 free_name_tables(tcs);
768 free_max_time(tcs);
769 free_saved_state(tcs);
770 }
771 g_free(tcs->running_process);
772 tcs->running_process = NULL;
773 lttv_state_free_process_table(tcs->processes);
774 lttv_state_free_usertraces(tcs->usertraces);
775 tcs->processes = NULL;
776 tcs->usertraces = NULL;
777 }
778 #endif
779 LTTV_TRACESET_CONTEXT_CLASS(g_type_class_peek(LTTV_TRACESET_CONTEXT_TYPE))->
780 fini((LttvTracesetContext *)self);
781 }
782
783
784 static LttvTracesetContext *new_traceset_context(LttvTracesetContext *self)
785 {
786 return LTTV_TRACESET_CONTEXT(g_object_new(LTTV_TRACESET_STATE_TYPE, NULL));
787 }
788
789
790 static LttvTraceContext *new_trace_context(LttvTracesetContext *self)
791 {
792 return LTTV_TRACE_CONTEXT(g_object_new(LTTV_TRACE_STATE_TYPE, NULL));
793 }
794
795
796 static LttvTracefileContext *new_tracefile_context(LttvTracesetContext *self)
797 {
798 return LTTV_TRACEFILE_CONTEXT(g_object_new(LTTV_TRACEFILE_STATE_TYPE, NULL));
799 }
800
801
802 /* Write the process state of the trace */
803
804 static void write_process_state(gpointer key, gpointer value,
805 gpointer user_data)
806 {
807 LttvProcessState *process;
808
809 LttvExecutionState *es;
810
811 FILE *fp = (FILE *)user_data;
812
813 guint i;
814 guint64 address;
815
816 process = (LttvProcessState *)value;
817 fprintf(fp," <PROCESS CORE=%p PID=%u TGID=%u PPID=%u TYPE=\"%s\" CTIME_S=%lu CTIME_NS=%lu ITIME_S=%lu ITIME_NS=%lu NAME=\"%s\" BRAND=\"%s\" CPU=\"%u\" FREE_EVENTS=\"%u\">\n",
818 process, process->pid, process->tgid, process->ppid,
819 g_quark_to_string(process->type),
820 process->creation_time.tv_sec,
821 process->creation_time.tv_nsec,
822 process->insertion_time.tv_sec,
823 process->insertion_time.tv_nsec,
824 g_quark_to_string(process->name),
825 g_quark_to_string(process->brand),
826 process->cpu, process->free_events);
827
828 for(i = 0 ; i < process->execution_stack->len; i++) {
829 es = &g_array_index(process->execution_stack, LttvExecutionState, i);
830 fprintf(fp, " <ES MODE=\"%s\" SUBMODE=\"%s\" ENTRY_S=%lu ENTRY_NS=%lu",
831 g_quark_to_string(es->t), g_quark_to_string(es->n),
832 es->entry.tv_sec, es->entry.tv_nsec);
833 fprintf(fp, " CHANGE_S=%lu CHANGE_NS=%lu STATUS=\"%s\"/>\n",
834 es->change.tv_sec, es->change.tv_nsec, g_quark_to_string(es->s));
835 }
836
837 for(i = 0 ; i < process->user_stack->len; i++) {
838 address = g_array_index(process->user_stack, guint64, i);
839 fprintf(fp, " <USER_STACK ADDRESS=\"%" PRIu64 "\"/>\n", address);
840 }
841
842 if(process->usertrace) {
843 fprintf(fp, " <USERTRACE NAME=\"%s\" CPU=%u\n/>",
844 g_quark_to_string(process->usertrace->tracefile_name),
845 process->usertrace->cpu);
846 }
847
848
849 fprintf(fp, " </PROCESS>\n");
850 }
851
852
853 void lttv_state_write(LttvTraceState *self, LttTime t, FILE *fp)
854 {
855 guint i, nb_tracefile, nb_block, offset;
856 guint64 tsc;
857
858 LttvTracefileState *tfcs;
859
860 LttTracefile *tf;
861
862 LttEventPosition *ep;
863
864 guint nb_cpus;
865
866 ep = ltt_event_position_new();
867
868 fprintf(fp,"<PROCESS_STATE TIME_S=%lu TIME_NS=%lu>\n", t.tv_sec, t.tv_nsec);
869
870 g_hash_table_foreach(self->processes, write_process_state, fp);
871
872 nb_cpus = ltt_trace_get_num_cpu(self->parent.t);
873 for(i=0;i<nb_cpus;i++) {
874 fprintf(fp," <CPU NUM=%u RUNNING_PROCESS=%u>\n",
875 i, self->running_process[i]->pid);
876 }
877
878 nb_tracefile = self->parent.tracefiles->len;
879
880 for(i = 0 ; i < nb_tracefile ; i++) {
881 tfcs =
882 LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
883 LttvTracefileContext*, i));
884 fprintf(fp, " <TRACEFILE TIMESTAMP_S=%lu TIMESTAMP_NS=%lu",
885 tfcs->parent.timestamp.tv_sec,
886 tfcs->parent.timestamp.tv_nsec);
887 LttEvent *e = ltt_tracefile_get_event(tfcs->parent.tf);
888 if(e == NULL) fprintf(fp,"/>\n");
889 else {
890 ltt_event_position(e, ep);
891 ltt_event_position_get(ep, &tf, &nb_block, &offset, &tsc);
892 fprintf(fp, " BLOCK=%u OFFSET=%u TSC=%" PRIu64 "/>\n", nb_block, offset,
893 tsc);
894 }
895 }
896 g_free(ep);
897 fprintf(fp,"</PROCESS_STATE>\n");
898 }
899
900
901 static void write_process_state_raw(gpointer key, gpointer value,
902 gpointer user_data)
903 {
904 LttvProcessState *process;
905
906 LttvExecutionState *es;
907
908 FILE *fp = (FILE *)user_data;
909
910 guint i;
911 guint64 address;
912
913 process = (LttvProcessState *)value;
914 fputc(HDR_PROCESS, fp);
915 //fwrite(&header, sizeof(header), 1, fp);
916 //fprintf(fp, "%s", g_quark_to_string(process->type));
917 //fputc('\0', fp);
918 fwrite(&process->type, sizeof(process->type), 1, fp);
919 //fprintf(fp, "%s", g_quark_to_string(process->name));
920 //fputc('\0', fp);
921 fwrite(&process->name, sizeof(process->name), 1, fp);
922 //fprintf(fp, "%s", g_quark_to_string(process->brand));
923 //fputc('\0', fp);
924 fwrite(&process->brand, sizeof(process->brand), 1, fp);
925 fwrite(&process->pid, sizeof(process->pid), 1, fp);
926 fwrite(&process->free_events, sizeof(process->free_events), 1, fp);
927 fwrite(&process->tgid, sizeof(process->tgid), 1, fp);
928 fwrite(&process->ppid, sizeof(process->ppid), 1, fp);
929 fwrite(&process->cpu, sizeof(process->cpu), 1, fp);
930 fwrite(&process->creation_time, sizeof(process->creation_time), 1, fp);
931 fwrite(&process->insertion_time, sizeof(process->insertion_time), 1, fp);
932
933 #if 0
934 fprintf(fp," <PROCESS CORE=%p PID=%u TGID=%u PPID=%u TYPE=\"%s\" CTIME_S=%lu CTIME_NS=%lu ITIME_S=%lu ITIME_NS=%lu NAME=\"%s\" BRAND=\"%s\" CPU=\"%u\" PROCESS_TYPE=%u>\n",
935 process, process->pid, process->tgid, process->ppid,
936 g_quark_to_string(process->type),
937 process->creation_time.tv_sec,
938 process->creation_time.tv_nsec,
939 process->insertion_time.tv_sec,
940 process->insertion_time.tv_nsec,
941 g_quark_to_string(process->name),
942 g_quark_to_string(process->brand),
943 process->cpu);
944 #endif //0
945
946 for(i = 0 ; i < process->execution_stack->len; i++) {
947 es = &g_array_index(process->execution_stack, LttvExecutionState, i);
948
949 fputc(HDR_ES, fp);
950 //fprintf(fp, "%s", g_quark_to_string(es->t));
951 //fputc('\0', fp);
952 fwrite(&es->t, sizeof(es->t), 1, fp);
953 //fprintf(fp, "%s", g_quark_to_string(es->n));
954 //fputc('\0', fp);
955 fwrite(&es->n, sizeof(es->n), 1, fp);
956 //fprintf(fp, "%s", g_quark_to_string(es->s));
957 //fputc('\0', fp);
958 fwrite(&es->s, sizeof(es->s), 1, fp);
959 fwrite(&es->entry, sizeof(es->entry), 1, fp);
960 fwrite(&es->change, sizeof(es->change), 1, fp);
961 fwrite(&es->cum_cpu_time, sizeof(es->cum_cpu_time), 1, fp);
962 #if 0
963 fprintf(fp, " <ES MODE=\"%s\" SUBMODE=\"%s\" ENTRY_S=%lu ENTRY_NS=%lu",
964 g_quark_to_string(es->t), g_quark_to_string(es->n),
965 es->entry.tv_sec, es->entry.tv_nsec);
966 fprintf(fp, " CHANGE_S=%lu CHANGE_NS=%lu STATUS=\"%s\"/>\n",
967 es->change.tv_sec, es->change.tv_nsec, g_quark_to_string(es->s));
968 #endif //0
969 }
970
971 for(i = 0 ; i < process->user_stack->len; i++) {
972 address = g_array_index(process->user_stack, guint64, i);
973 fputc(HDR_USER_STACK, fp);
974 fwrite(&address, sizeof(address), 1, fp);
975 #if 0
976 fprintf(fp, " <USER_STACK ADDRESS=\"%llu\"/>\n", address);
977 #endif //0
978 }
979
980 if(process->usertrace) {
981 fputc(HDR_USERTRACE, fp);
982 //fprintf(fp, "%s", g_quark_to_string(process->usertrace->tracefile_name));
983 //fputc('\0', fp);
984 fwrite(&process->usertrace->tracefile_name,
985 sizeof(process->usertrace->tracefile_name), 1, fp);
986 fwrite(&process->usertrace->cpu, sizeof(process->usertrace->cpu), 1, fp);
987 #if 0
988 fprintf(fp, " <USERTRACE NAME=\"%s\" CPU=%u\n/>",
989 g_quark_to_string(process->usertrace->tracefile_name),
990 process->usertrace->cpu);
991 #endif //0
992 }
993
994 }
995
996
997 void lttv_state_write_raw(LttvTraceState *self, LttTime t, FILE *fp)
998 {
999 guint i, nb_tracefile, nb_block, offset;
1000 guint64 tsc;
1001
1002 LttvTracefileState *tfcs;
1003
1004 LttTracefile *tf;
1005
1006 LttEventPosition *ep;
1007
1008 guint nb_cpus;
1009
1010 ep = ltt_event_position_new();
1011
1012 //fprintf(fp,"<PROCESS_STATE TIME_S=%lu TIME_NS=%lu>\n", t.tv_sec, t.tv_nsec);
1013 fputc(HDR_PROCESS_STATE, fp);
1014 fwrite(&t, sizeof(t), 1, fp);
1015
1016 g_hash_table_foreach(self->processes, write_process_state_raw, fp);
1017
1018 nb_cpus = ltt_trace_get_num_cpu(self->parent.t);
1019 for(i=0;i<nb_cpus;i++) {
1020 fputc(HDR_CPU, fp);
1021 fwrite(&i, sizeof(i), 1, fp); /* cpu number */
1022 fwrite(&self->running_process[i]->pid,
1023 sizeof(self->running_process[i]->pid), 1, fp);
1024 //fprintf(fp," <CPU NUM=%u RUNNING_PROCESS=%u>\n",
1025 // i, self->running_process[i]->pid);
1026 }
1027
1028 nb_tracefile = self->parent.tracefiles->len;
1029
1030 for(i = 0 ; i < nb_tracefile ; i++) {
1031 tfcs =
1032 LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
1033 LttvTracefileContext*, i));
1034 // fprintf(fp, " <TRACEFILE TIMESTAMP_S=%lu TIMESTAMP_NS=%lu",
1035 // tfcs->parent.timestamp.tv_sec,
1036 // tfcs->parent.timestamp.tv_nsec);
1037 fputc(HDR_TRACEFILE, fp);
1038 fwrite(&tfcs->parent.timestamp, sizeof(tfcs->parent.timestamp), 1, fp);
1039 /* Note : if timestamp if LTT_TIME_INFINITE, there will be no
1040 * position following : end of trace */
1041 LttEvent *e = ltt_tracefile_get_event(tfcs->parent.tf);
1042 if(e != NULL) {
1043 ltt_event_position(e, ep);
1044 ltt_event_position_get(ep, &tf, &nb_block, &offset, &tsc);
1045 //fprintf(fp, " BLOCK=%u OFFSET=%u TSC=%llu/>\n", nb_block, offset,
1046 // tsc);
1047 fwrite(&nb_block, sizeof(nb_block), 1, fp);
1048 fwrite(&offset, sizeof(offset), 1, fp);
1049 fwrite(&tsc, sizeof(tsc), 1, fp);
1050 }
1051 }
1052 g_free(ep);
1053 }
1054
1055
1056 /* Read process state from a file */
1057
1058 /* Called because a HDR_PROCESS was found */
1059 static void read_process_state_raw(LttvTraceState *self, FILE *fp,
1060 GPtrArray *quarktable)
1061 {
1062 LttvExecutionState *es;
1063 LttvProcessState *process, *parent_process;
1064 LttvProcessState tmp;
1065 GQuark tmpq;
1066 size_t res;
1067
1068 guint64 *address;
1069
1070 res = fread(&tmp.type, sizeof(tmp.type), 1, fp);
1071 res += fread(&tmp.name, sizeof(tmp.name), 1, fp);
1072 res += fread(&tmp.brand, sizeof(tmp.brand), 1, fp);
1073 res += fread(&tmp.pid, sizeof(tmp.pid), 1, fp);
1074 res += fread(&tmp.free_events, sizeof(tmp.free_events), 1, fp);
1075 res += fread(&tmp.tgid, sizeof(tmp.tgid), 1, fp);
1076 res += fread(&tmp.ppid, sizeof(tmp.ppid), 1, fp);
1077 res += fread(&tmp.cpu, sizeof(tmp.cpu), 1, fp);
1078 res += fread(&tmp.creation_time, sizeof(tmp.creation_time), 1, fp);
1079 res += fread(&tmp.insertion_time, sizeof(tmp.insertion_time), 1, fp);
1080 g_assert(res == 10);
1081
1082 if(tmp.pid == 0) {
1083 process = lttv_state_find_process(self, tmp.cpu, tmp.pid);
1084 } else {
1085 /* We must link to the parent */
1086 parent_process = lttv_state_find_process_or_create(self, ANY_CPU, tmp.ppid,
1087 &ltt_time_zero);
1088 process = lttv_state_find_process(self, ANY_CPU, tmp.pid);
1089 if(process == NULL) {
1090 process = lttv_state_create_process(self, parent_process, tmp.cpu,
1091 tmp.pid, tmp.tgid,
1092 g_quark_from_string((gchar*)g_ptr_array_index(quarktable, tmp.name)),
1093 &tmp.creation_time);
1094 }
1095 }
1096 process->insertion_time = tmp.insertion_time;
1097 process->creation_time = tmp.creation_time;
1098 process->type = g_quark_from_string(
1099 (gchar*)g_ptr_array_index(quarktable, tmp.type));
1100 process->tgid = tmp.tgid;
1101 process->ppid = tmp.ppid;
1102 process->brand = g_quark_from_string(
1103 (gchar*)g_ptr_array_index(quarktable, tmp.brand));
1104 process->name =
1105 g_quark_from_string((gchar*)g_ptr_array_index(quarktable, tmp.name));
1106 process->free_events = tmp.free_events;
1107
1108 do {
1109 if(feof(fp) || ferror(fp)) goto end_loop;
1110
1111 gint hdr = fgetc(fp);
1112 if(hdr == EOF) goto end_loop;
1113
1114 switch(hdr) {
1115 case HDR_ES:
1116 process->execution_stack =
1117 g_array_set_size(process->execution_stack,
1118 process->execution_stack->len + 1);
1119 es = &g_array_index(process->execution_stack, LttvExecutionState,
1120 process->execution_stack->len-1);
1121 process->state = es;
1122
1123 res = fread(&es->t, sizeof(es->t), 1, fp);
1124 g_assert(res == 1);
1125 es->t = g_quark_from_string(
1126 (gchar*)g_ptr_array_index(quarktable, es->t));
1127 res = fread(&es->n, sizeof(es->n), 1, fp);
1128 g_assert(res == 1);
1129 es->n = g_quark_from_string(
1130 (gchar*)g_ptr_array_index(quarktable, es->n));
1131 res = fread(&es->s, sizeof(es->s), 1, fp);
1132 g_assert(res == 1);
1133 es->s = g_quark_from_string(
1134 (gchar*)g_ptr_array_index(quarktable, es->s));
1135 res = fread(&es->entry, sizeof(es->entry), 1, fp);
1136 res += fread(&es->change, sizeof(es->change), 1, fp);
1137 res += fread(&es->cum_cpu_time, sizeof(es->cum_cpu_time), 1, fp);
1138 g_assert(res == 3);
1139 break;
1140
1141 case HDR_USER_STACK:
1142 process->user_stack = g_array_set_size(process->user_stack,
1143 process->user_stack->len + 1);
1144 address = &g_array_index(process->user_stack, guint64,
1145 process->user_stack->len-1);
1146 res = fread(address, sizeof(address), 1, fp);
1147 g_assert(res == 1);
1148 process->current_function = *address;
1149 break;
1150
1151 case HDR_USERTRACE:
1152 res = fread(&tmpq, sizeof(tmpq), 1, fp);
1153 res += fread(&process->usertrace->cpu,
1154 sizeof(process->usertrace->cpu), 1, fp);
1155 g_assert(res == 2);
1156 break;
1157
1158 default:
1159 ungetc(hdr, fp);
1160 goto end_loop;
1161 };
1162 } while(1);
1163 end_loop:
1164 return;
1165 }
1166
1167
1168 /* Called because a HDR_PROCESS_STATE was found */
1169 /* Append a saved state to the trace states */
1170 void lttv_state_read_raw(LttvTraceState *self, FILE *fp, GPtrArray *quarktable)
1171 {
1172 guint i, nb_tracefile, nb_block, offset;
1173 guint64 tsc;
1174 LttvTracefileState *tfcs;
1175
1176 LttEventPosition *ep;
1177
1178 guint nb_cpus;
1179
1180 int hdr;
1181 size_t res;
1182
1183 LttTime t;
1184
1185 LttvAttribute *saved_states_tree, *saved_state_tree;
1186
1187 LttvAttributeValue value;
1188 GTree *pqueue = self->parent.ts_context->pqueue;
1189 ep = ltt_event_position_new();
1190
1191 restore_init_state(self);
1192
1193 res = fread(&t, sizeof(t), 1, fp);
1194 g_assert(res == 1);
1195
1196 do {
1197 if(feof(fp) || ferror(fp)) goto end_loop;
1198 hdr = fgetc(fp);
1199 if(hdr == EOF) goto end_loop;
1200
1201 switch(hdr) {
1202 case HDR_PROCESS:
1203 /* Call read_process_state_raw */
1204 read_process_state_raw(self, fp, quarktable);
1205 break;
1206 case HDR_TRACEFILE:
1207 case HDR_TRACESET:
1208 case HDR_TRACE:
1209 case HDR_QUARKS:
1210 case HDR_QUARK:
1211 case HDR_ES:
1212 case HDR_USER_STACK:
1213 case HDR_USERTRACE:
1214 case HDR_PROCESS_STATE:
1215 case HDR_CPU:
1216 ungetc(hdr, fp);
1217 goto end_loop;
1218 break;
1219 default:
1220 g_error("Error while parsing saved state file : unknown data header %d",
1221 hdr);
1222 };
1223 } while(1);
1224 end_loop:
1225
1226 nb_cpus = ltt_trace_get_num_cpu(self->parent.t);
1227 for(i=0;i<nb_cpus;i++) {
1228 int cpu_num;
1229 hdr = fgetc(fp);
1230 g_assert(hdr == HDR_CPU);
1231 res = fread(&cpu_num, sizeof(cpu_num), 1, fp); /* cpu number */
1232 g_assert(res == 1);
1233 g_assert(i == cpu_num);
1234 res = fread(&self->running_process[i]->pid,
1235 sizeof(self->running_process[i]->pid), 1, fp);
1236 g_assert(res == 1);
1237 }
1238
1239 nb_tracefile = self->parent.tracefiles->len;
1240
1241 for(i = 0 ; i < nb_tracefile ; i++) {
1242 tfcs =
1243 LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
1244 LttvTracefileContext*, i));
1245 // fprintf(fp, " <TRACEFILE TIMESTAMP_S=%lu TIMESTAMP_NS=%lu",
1246 // tfcs->parent.timestamp.tv_sec,
1247 // tfcs->parent.timestamp.tv_nsec);
1248 g_tree_remove(pqueue, &tfcs->parent);
1249 hdr = fgetc(fp);
1250 g_assert(hdr == HDR_TRACEFILE);
1251 res = fread(&tfcs->parent.timestamp, sizeof(tfcs->parent.timestamp), 1, fp);
1252 g_assert(res == 1);
1253 /* Note : if timestamp if LTT_TIME_INFINITE, there will be no
1254 * position following : end of trace */
1255 if(ltt_time_compare(tfcs->parent.timestamp, ltt_time_infinite) != 0) {
1256 res = fread(&nb_block, sizeof(nb_block), 1, fp);
1257 res += fread(&offset, sizeof(offset), 1, fp);
1258 res += fread(&tsc, sizeof(tsc), 1, fp);
1259 g_assert(res == 3);
1260 ltt_event_position_set(ep, tfcs->parent.tf, nb_block, offset, tsc);
1261 gint ret = ltt_tracefile_seek_position(tfcs->parent.tf, ep);
1262 g_assert(ret == 0);
1263 g_tree_insert(pqueue, &tfcs->parent, &tfcs->parent);
1264 }
1265 }
1266 g_free(ep);
1267
1268 saved_states_tree = lttv_attribute_find_subdir(self->parent.t_a,
1269 LTTV_STATE_SAVED_STATES);
1270 saved_state_tree = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
1271 value = lttv_attribute_add(saved_states_tree,
1272 lttv_attribute_get_number(saved_states_tree), LTTV_GOBJECT);
1273 *(value.v_gobject) = (GObject *)saved_state_tree;
1274 value = lttv_attribute_add(saved_state_tree, LTTV_STATE_TIME, LTTV_TIME);
1275 *(value.v_time) = t;
1276 lttv_state_save(self, saved_state_tree);
1277 g_debug("Saving state at time %lu.%lu", t.tv_sec,
1278 t.tv_nsec);
1279
1280 *(self->max_time_state_recomputed_in_seek) = t;
1281
1282 }
1283
1284 /* Called when a HDR_TRACE is found */
1285 void lttv_trace_states_read_raw(LttvTraceState *tcs, FILE *fp,
1286 GPtrArray *quarktable)
1287 {
1288 int hdr;
1289
1290 do {
1291 if(feof(fp) || ferror(fp)) goto end_loop;
1292 hdr = fgetc(fp);
1293 if(hdr == EOF) goto end_loop;
1294
1295 switch(hdr) {
1296 case HDR_PROCESS_STATE:
1297 /* Call read_process_state_raw */
1298 lttv_state_read_raw(tcs, fp, quarktable);
1299 break;
1300 case HDR_TRACEFILE:
1301 case HDR_TRACESET:
1302 case HDR_TRACE:
1303 case HDR_QUARKS:
1304 case HDR_QUARK:
1305 case HDR_ES:
1306 case HDR_USER_STACK:
1307 case HDR_USERTRACE:
1308 case HDR_PROCESS:
1309 case HDR_CPU:
1310 g_error("Error while parsing saved state file :"
1311 " unexpected data header %d",
1312 hdr);
1313 break;
1314 default:
1315 g_error("Error while parsing saved state file : unknown data header %d",
1316 hdr);
1317 };
1318 } while(1);
1319 end_loop:
1320 *(tcs->max_time_state_recomputed_in_seek) = tcs->parent.time_span.end_time;
1321 restore_init_state(tcs);
1322 lttv_process_trace_seek_time(&tcs->parent, ltt_time_zero);
1323 return;
1324 }
1325
1326
1327
1328 /* Copy each process from an existing hash table to a new one */
1329
1330 static void copy_process_state(gpointer key, gpointer value,gpointer user_data)
1331 {
1332 LttvProcessState *process, *new_process;
1333
1334 GHashTable *new_processes = (GHashTable *)user_data;
1335
1336 guint i;
1337
1338 process = (LttvProcessState *)value;
1339 new_process = g_new(LttvProcessState, 1);
1340 *new_process = *process;
1341 new_process->execution_stack = g_array_sized_new(FALSE, FALSE,
1342 sizeof(LttvExecutionState), PREALLOCATED_EXECUTION_STACK);
1343 new_process->execution_stack =
1344 g_array_set_size(new_process->execution_stack,
1345 process->execution_stack->len);
1346 for(i = 0 ; i < process->execution_stack->len; i++) {
1347 g_array_index(new_process->execution_stack, LttvExecutionState, i) =
1348 g_array_index(process->execution_stack, LttvExecutionState, i);
1349 }
1350 new_process->state = &g_array_index(new_process->execution_stack,
1351 LttvExecutionState, new_process->execution_stack->len - 1);
1352 new_process->user_stack = g_array_sized_new(FALSE, FALSE,
1353 sizeof(guint64), 0);
1354 new_process->user_stack = g_array_set_size(new_process->user_stack,
1355 process->user_stack->len);
1356 for(i = 0 ; i < process->user_stack->len; i++) {
1357 g_array_index(new_process->user_stack, guint64, i) =
1358 g_array_index(process->user_stack, guint64, i);
1359 }
1360 new_process->current_function = process->current_function;
1361
1362 /* fd hash table stuff */
1363 {
1364 GHashTableIter it;
1365 gpointer key;
1366 gpointer value;
1367
1368 /* copy every item in the hash table */
1369 new_process->fds = g_hash_table_new(g_direct_hash, g_direct_equal);
1370
1371 g_hash_table_iter_init(&it, process->fds);
1372 while (g_hash_table_iter_next (&it, (void *)&key, (void *)&value)) {
1373 g_hash_table_insert(new_process->fds, key, value);
1374 }
1375 }
1376
1377 /* When done creating the new process state, insert it in the
1378 * hash table */
1379 g_hash_table_insert(new_processes, new_process, new_process);
1380 }
1381
1382
1383 static GHashTable *lttv_state_copy_process_table(GHashTable *processes)
1384 {
1385 GHashTable *new_processes = g_hash_table_new(process_hash, process_equal);
1386
1387 g_hash_table_foreach(processes, copy_process_state, new_processes);
1388 return new_processes;
1389 }
1390
1391 static LttvCPUState *lttv_state_copy_cpu_states(LttvCPUState *states, guint n)
1392 {
1393 guint i,j;
1394 LttvCPUState *retval;
1395
1396 retval = g_new(LttvCPUState, n);
1397
1398 for(i=0; i<n; i++) {
1399 retval[i].irq_stack = g_array_new(FALSE, FALSE, sizeof(gint));
1400 g_array_set_size(retval[i].irq_stack, states[i].irq_stack->len);
1401 for(j=0; j<states[i].irq_stack->len; j++) {
1402 g_array_index(retval[i].irq_stack, gint, j) =
1403 g_array_index(states[i].irq_stack, gint, j);
1404 }
1405
1406 retval[i].softirq_stack = g_array_new(FALSE, FALSE, sizeof(gint));
1407 g_array_set_size(retval[i].softirq_stack, states[i].softirq_stack->len);
1408 for(j=0; j<states[i].softirq_stack->len; j++) {
1409 g_array_index(retval[i].softirq_stack, gint, j) =
1410 g_array_index(states[i].softirq_stack, gint, j);
1411 }
1412
1413 retval[i].trap_stack = g_array_new(FALSE, FALSE, sizeof(gint));
1414 g_array_set_size(retval[i].trap_stack, states[i].trap_stack->len);
1415 for(j=0; j<states[i].trap_stack->len; j++) {
1416 g_array_index(retval[i].trap_stack, gint, j) =
1417 g_array_index(states[i].trap_stack, gint, j);
1418 }
1419
1420 retval[i].mode_stack = g_array_new(FALSE, FALSE, sizeof(LttvCPUMode));
1421 g_array_set_size(retval[i].mode_stack, states[i].mode_stack->len);
1422 for(j=0; j<states[i].mode_stack->len; j++) {
1423 g_array_index(retval[i].mode_stack, GQuark, j) =
1424 g_array_index(states[i].mode_stack, GQuark, j);
1425 }
1426 }
1427
1428 return retval;
1429 }
1430
1431 static void lttv_state_free_cpu_states(LttvCPUState *states, guint n)
1432 {
1433 guint i;
1434
1435 for(i=0; i<n; i++) {
1436 g_array_free(states[i].mode_stack, TRUE);
1437 g_array_free(states[i].irq_stack, TRUE);
1438 g_array_free(states[i].softirq_stack, TRUE);
1439 g_array_free(states[i].trap_stack, TRUE);
1440 }
1441
1442 g_free(states);
1443 }
1444
1445 static LttvIRQState *lttv_state_copy_irq_states(LttvIRQState *states, guint n)
1446 {
1447 guint i,j;
1448 LttvIRQState *retval;
1449
1450 retval = g_new(LttvIRQState, n);
1451
1452 for(i=0; i<n; i++) {
1453 retval[i].mode_stack = g_array_new(FALSE, FALSE, sizeof(LttvIRQMode));
1454 g_array_set_size(retval[i].mode_stack, states[i].mode_stack->len);
1455 for(j=0; j<states[i].mode_stack->len; j++) {
1456 g_array_index(retval[i].mode_stack, GQuark, j) =
1457 g_array_index(states[i].mode_stack, GQuark, j);
1458 }
1459 }
1460
1461 return retval;
1462 }
1463
1464 static void lttv_state_free_irq_states(LttvIRQState *states, guint n)
1465 {
1466 guint i;
1467
1468 for(i=0; i<n; i++) {
1469 g_array_free(states[i].mode_stack, TRUE);
1470 }
1471
1472 g_free(states);
1473 }
1474
1475 static LttvSoftIRQState *
1476 lttv_state_copy_soft_irq_states(LttvSoftIRQState *states, guint n)
1477 {
1478 guint i;
1479 LttvSoftIRQState *retval;
1480
1481 retval = g_new(LttvSoftIRQState, n);
1482
1483 for(i=0; i<n; i++) {
1484 retval[i].pending = states[i].pending;
1485 retval[i].running = states[i].running;
1486 }
1487
1488 return retval;
1489 }
1490
1491 static void lttv_state_free_soft_irq_states(LttvSoftIRQState *states, guint n)
1492 {
1493 g_free(states);
1494 }
1495
1496 static LttvTrapState *
1497 lttv_state_copy_trap_states(LttvTrapState *states, guint n)
1498 {
1499 guint i;
1500 LttvTrapState *retval;
1501
1502 retval = g_new(LttvTrapState, n);
1503
1504 for(i=0; i<n; i++) {
1505 retval[i].running = states[i].running;
1506 }
1507
1508 return retval;
1509 }
1510
1511 static void lttv_state_free_trap_states(LttvTrapState *states, guint n)
1512 {
1513 g_free(states);
1514 }
1515
1516 /* bdevstate stuff */
1517
1518 static LttvBdevState *get_hashed_bdevstate(LttvTraceState *ts, guint32 devcode)
1519 {
1520 gint devcode_gint = devcode;
1521 gpointer bdev = g_hash_table_lookup(ts->bdev_states, &devcode_gint);
1522 if(bdev == NULL) {
1523 LttvBdevState *bdevstate = g_new(LttvBdevState, 1);
1524 bdevstate->mode_stack = g_array_new(FALSE, FALSE, sizeof(GQuark));
1525
1526 gint * key = g_new(gint, 1);
1527 *key = devcode;
1528 g_hash_table_insert(ts->bdev_states, key, bdevstate);
1529
1530 bdev = bdevstate;
1531 }
1532
1533 return bdev;
1534 }
1535
1536 static LttvBdevState *bdevstate_new(void)
1537 {
1538 LttvBdevState *retval;
1539 retval = g_new(LttvBdevState, 1);
1540 retval->mode_stack = g_array_new(FALSE, FALSE, sizeof(GQuark));
1541
1542 return retval;
1543 }
1544
1545 static void bdevstate_free(LttvBdevState *bds)
1546 {
1547 g_array_free(bds->mode_stack, TRUE);
1548 g_free(bds);
1549 }
1550
1551 static void bdevstate_free_cb(gpointer key, gpointer value, gpointer user_data)
1552 {
1553 LttvBdevState *bds = (LttvBdevState *) value;
1554
1555 bdevstate_free(bds);
1556 }
1557
1558 static LttvBdevState *bdevstate_copy(LttvBdevState *bds)
1559 {
1560 LttvBdevState *retval;
1561
1562 retval = bdevstate_new();
1563 g_array_insert_vals(retval->mode_stack, 0, bds->mode_stack->data,
1564 bds->mode_stack->len);
1565
1566 return retval;
1567 }
1568
1569 static void insert_and_copy_bdev_state(gpointer k, gpointer v, gpointer u)
1570 {
1571 //GHashTable *ht = (GHashTable *)u;
1572 LttvBdevState *bds = (LttvBdevState *)v;
1573 LttvBdevState *newbds;
1574
1575 newbds = bdevstate_copy(bds);
1576
1577 g_hash_table_insert(u, k, newbds);
1578 }
1579
1580 static GHashTable *lttv_state_copy_blkdev_hashtable(GHashTable *ht)
1581 {
1582 GHashTable *retval;
1583
1584 retval = g_hash_table_new(g_int_hash, g_int_equal);
1585
1586 g_hash_table_foreach(ht, insert_and_copy_bdev_state, retval);
1587
1588 return retval;
1589 }
1590
1591 /* Free a hashtable and the LttvBdevState structures its values
1592 * point to. */
1593
1594 static void lttv_state_free_blkdev_hashtable(GHashTable *ht)
1595 {
1596 g_hash_table_foreach(ht, bdevstate_free_cb, NULL);
1597 g_hash_table_destroy(ht);
1598 }
1599
1600 /* The saved state for each trace contains a member "processes", which
1601 stores a copy of the process table, and a member "tracefiles" with
1602 one entry per tracefile. Each tracefile has a "process" member pointing
1603 to the current process and a "position" member storing the tracefile
1604 position (needed to seek to the current "next" event. */
1605
1606 static void state_save(LttvTraceState *self, LttvAttribute *container)
1607 {
1608 guint i, nb_tracefile, nb_cpus, nb_irqs, nb_soft_irqs, nb_traps;
1609
1610 LttvTracefileState *tfcs;
1611
1612 LttvAttribute *tracefiles_tree, *tracefile_tree;
1613
1614 guint *running_process;
1615
1616 LttvAttributeValue value;
1617
1618 LttEventPosition *ep;
1619
1620 tracefiles_tree = lttv_attribute_find_subdir(container,
1621 LTTV_STATE_TRACEFILES);
1622
1623 value = lttv_attribute_add(container, LTTV_STATE_PROCESSES,
1624 LTTV_POINTER);
1625 *(value.v_pointer) = lttv_state_copy_process_table(self->processes);
1626
1627 /* Add the currently running processes array */
1628 nb_cpus = ltt_trace_get_num_cpu(self->parent.t);
1629 running_process = g_new(guint, nb_cpus);
1630 for(i=0;i<nb_cpus;i++) {
1631 running_process[i] = self->running_process[i]->pid;
1632 }
1633 value = lttv_attribute_add(container, LTTV_STATE_RUNNING_PROCESS,
1634 LTTV_POINTER);
1635 *(value.v_pointer) = running_process;
1636
1637 g_info("State save");
1638
1639 nb_tracefile = self->parent.tracefiles->len;
1640
1641 for(i = 0 ; i < nb_tracefile ; i++) {
1642 tfcs =
1643 LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
1644 LttvTracefileContext*, i));
1645 tracefile_tree = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
1646 value = lttv_attribute_add(tracefiles_tree, i,
1647 LTTV_GOBJECT);
1648 *(value.v_gobject) = (GObject *)tracefile_tree;
1649 #if 0
1650 value = lttv_attribute_add(tracefile_tree, LTTV_STATE_PROCESS,
1651 LTTV_UINT);
1652 *(value.v_uint) = tfcs->process->pid;
1653 #endif //0
1654 value = lttv_attribute_add(tracefile_tree, LTTV_STATE_EVENT,
1655 LTTV_POINTER);
1656 /* Only save the position if the tfs has not infinite time. */
1657 //if(!g_tree_lookup(self->parent.ts_context->pqueue, &tfcs->parent)
1658 // && current_tfcs != tfcs) {
1659 if(ltt_time_compare(tfcs->parent.timestamp, ltt_time_infinite) == 0) {
1660 *(value.v_pointer) = NULL;
1661 } else {
1662 LttEvent *e = ltt_tracefile_get_event(tfcs->parent.tf);
1663 ep = ltt_event_position_new();
1664 ltt_event_position(e, ep);
1665 *(value.v_pointer) = ep;
1666
1667 guint nb_block, offset;
1668 guint64 tsc;
1669 LttTracefile *tf;
1670 ltt_event_position_get(ep, &tf, &nb_block, &offset, &tsc);
1671 g_info("Block %u offset %u tsc %" PRIu64 " time %lu.%lu", nb_block,
1672 offset, tsc, tfcs->parent.timestamp.tv_sec,
1673 tfcs->parent.timestamp.tv_nsec);
1674 }
1675 }
1676
1677 /* save the cpu state */
1678 {
1679 value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_CPUS_COUNT,
1680 LTTV_UINT);
1681 *(value.v_uint) = nb_cpus;
1682
1683 value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_CPUS,
1684 LTTV_POINTER);
1685 *(value.v_pointer) = lttv_state_copy_cpu_states(self->cpu_states, nb_cpus);
1686 }
1687
1688 /* save the irq state */
1689 nb_irqs = self->name_tables->nb_irqs;
1690 {
1691 value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_IRQS,
1692 LTTV_POINTER);
1693 *(value.v_pointer) = lttv_state_copy_irq_states(self->irq_states, nb_irqs);
1694 }
1695
1696 /* save the soft irq state */
1697 nb_soft_irqs = self->name_tables->nb_soft_irqs;
1698 {
1699 value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_SOFT_IRQS,
1700 LTTV_POINTER);
1701 *(value.v_pointer) = lttv_state_copy_soft_irq_states(self->soft_irq_states, nb_soft_irqs);
1702 }
1703
1704 /* save the trap state */
1705 nb_traps = self->name_tables->nb_traps;
1706 {
1707 value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_TRAPS,
1708 LTTV_POINTER);
1709 *(value.v_pointer) = lttv_state_copy_trap_states(self->trap_states, nb_traps);
1710 }
1711
1712 /* save the blkdev states */
1713 value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_BLKDEVS,
1714 LTTV_POINTER);
1715 *(value.v_pointer) = lttv_state_copy_blkdev_hashtable(self->bdev_states);
1716 }
1717
1718
1719 static void state_restore(LttvTraceState *self, LttvAttribute *container)
1720 {
1721 guint i, nb_tracefile, pid, nb_cpus, nb_irqs, nb_soft_irqs, nb_traps;
1722
1723 LttvTracefileState *tfcs;
1724
1725 LttvAttribute *tracefiles_tree, *tracefile_tree;
1726
1727 guint *running_process;
1728
1729 LttvAttributeType type;
1730
1731 LttvAttributeValue value;
1732
1733 LttvAttributeName name;
1734
1735 gboolean is_named;
1736
1737 LttEventPosition *ep;
1738
1739 LttvTracesetContext *tsc = self->parent.ts_context;
1740 int retval;
1741
1742 tracefiles_tree = lttv_attribute_find_subdir(container,
1743 LTTV_STATE_TRACEFILES);
1744
1745 type = lttv_attribute_get_by_name(container, LTTV_STATE_PROCESSES,
1746 &value);
1747 g_assert(type == LTTV_POINTER);
1748 lttv_state_free_process_table(self->processes);
1749 self->processes = lttv_state_copy_process_table(*(value.v_pointer));
1750
1751 /* Add the currently running processes array */
1752 nb_cpus = ltt_trace_get_num_cpu(self->parent.t);
1753 type = lttv_attribute_get_by_name(container, LTTV_STATE_RUNNING_PROCESS,
1754 &value);
1755 g_assert(type == LTTV_POINTER);
1756 running_process = *(value.v_pointer);
1757 for(i=0;i<nb_cpus;i++) {
1758 pid = running_process[i];
1759 self->running_process[i] = lttv_state_find_process(self, i, pid);
1760 g_assert(self->running_process[i] != NULL);
1761 }
1762
1763 nb_tracefile = self->parent.tracefiles->len;
1764
1765 //g_tree_destroy(tsc->pqueue);
1766 //tsc->pqueue = g_tree_new(compare_tracefile);
1767
1768 /* restore cpu resource states */
1769 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_CPUS, &value);
1770 g_assert(type == LTTV_POINTER);
1771 lttv_state_free_cpu_states(self->cpu_states, nb_cpus);
1772 self->cpu_states = lttv_state_copy_cpu_states(*(value.v_pointer), nb_cpus);
1773
1774 /* restore irq resource states */
1775 nb_irqs = self->name_tables->nb_irqs;
1776 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_IRQS, &value);
1777 g_assert(type == LTTV_POINTER);
1778 lttv_state_free_irq_states(self->irq_states, nb_irqs);
1779 self->irq_states = lttv_state_copy_irq_states(*(value.v_pointer), nb_irqs);
1780
1781 /* restore soft irq resource states */
1782 nb_soft_irqs = self->name_tables->nb_soft_irqs;
1783 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_SOFT_IRQS, &value);
1784 g_assert(type == LTTV_POINTER);
1785 lttv_state_free_soft_irq_states(self->soft_irq_states, nb_soft_irqs);
1786 self->soft_irq_states = lttv_state_copy_soft_irq_states(*(value.v_pointer), nb_soft_irqs);
1787
1788 /* restore trap resource states */
1789 nb_traps = self->name_tables->nb_traps;
1790 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_TRAPS, &value);
1791 g_assert(type == LTTV_POINTER);
1792 lttv_state_free_trap_states(self->trap_states, nb_traps);
1793 self->trap_states = lttv_state_copy_trap_states(*(value.v_pointer), nb_traps);
1794
1795 /* restore the blkdev states */
1796 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_BLKDEVS, &value);
1797 g_assert(type == LTTV_POINTER);
1798 lttv_state_free_blkdev_hashtable(self->bdev_states);
1799 self->bdev_states = lttv_state_copy_blkdev_hashtable(*(value.v_pointer));
1800
1801 for(i = 0 ; i < nb_tracefile ; i++) {
1802 tfcs =
1803 LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
1804 LttvTracefileContext*, i));
1805 type = lttv_attribute_get(tracefiles_tree, i, &name, &value, &is_named);
1806 g_assert(type == LTTV_GOBJECT);
1807 tracefile_tree = *((LttvAttribute **)(value.v_gobject));
1808 #if 0
1809 type = lttv_attribute_get_by_name(tracefile_tree, LTTV_STATE_PROCESS,
1810 &value);
1811 g_assert(type == LTTV_UINT);
1812 pid = *(value.v_uint);
1813 tfcs->process = lttv_state_find_process_or_create(tfcs, pid);
1814 #endif //0
1815 type = lttv_attribute_get_by_name(tracefile_tree, LTTV_STATE_EVENT,
1816 &value);
1817 g_assert(type == LTTV_POINTER);
1818 //g_assert(*(value.v_pointer) != NULL);
1819 ep = *(value.v_pointer);
1820 g_assert(tfcs->parent.t_context != NULL);
1821
1822 tfcs->cpu_state = &self->cpu_states[tfcs->cpu];
1823
1824 LttvTracefileContext *tfc = LTTV_TRACEFILE_CONTEXT(tfcs);
1825 g_tree_remove(tsc->pqueue, tfc);
1826
1827 if(ep != NULL) {
1828 retval= ltt_tracefile_seek_position(tfc->tf, ep);
1829 g_assert_cmpint(retval, ==, 0);
1830 tfc->timestamp = ltt_event_time(ltt_tracefile_get_event(tfc->tf));
1831 g_assert_cmpint(ltt_time_compare(tfc->timestamp, ltt_time_infinite),
1832 !=, 0);
1833 g_tree_insert(tsc->pqueue, tfc, tfc);
1834 g_info("Restoring state for a tf at time %lu.%lu",
1835 tfc->timestamp.tv_sec, tfc->timestamp.tv_nsec);
1836 } else {
1837 tfc->timestamp = ltt_time_infinite;
1838 }
1839 }
1840 }
1841
1842
1843 static void state_saved_free(LttvTraceState *self, LttvAttribute *container)
1844 {
1845 guint i, nb_tracefile, nb_cpus, nb_irqs, nb_soft_irqs;
1846
1847 LttvAttribute *tracefiles_tree, *tracefile_tree;
1848
1849 guint *running_process;
1850
1851 LttvAttributeType type;
1852
1853 LttvAttributeValue value;
1854
1855 LttvAttributeName name;
1856
1857 gboolean is_named;
1858
1859 tracefiles_tree = lttv_attribute_find_subdir(container,
1860 LTTV_STATE_TRACEFILES);
1861 g_object_ref(G_OBJECT(tracefiles_tree));
1862 lttv_attribute_remove_by_name(container, LTTV_STATE_TRACEFILES);
1863
1864 type = lttv_attribute_get_by_name(container, LTTV_STATE_PROCESSES,
1865 &value);
1866 g_assert(type == LTTV_POINTER);
1867 lttv_state_free_process_table(*(value.v_pointer));
1868 *(value.v_pointer) = NULL;
1869 lttv_attribute_remove_by_name(container, LTTV_STATE_PROCESSES);
1870
1871 /* Free running processes array */
1872 type = lttv_attribute_get_by_name(container, LTTV_STATE_RUNNING_PROCESS,
1873 &value);
1874 g_assert(type == LTTV_POINTER);
1875 running_process = *(value.v_pointer);
1876 g_free(running_process);
1877
1878 /* free cpu resource states */
1879 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_CPUS_COUNT, &value);
1880 g_assert(type == LTTV_UINT);
1881 nb_cpus = *value.v_uint;
1882 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_CPUS, &value);
1883 g_assert(type == LTTV_POINTER);
1884 lttv_state_free_cpu_states(*(value.v_pointer), nb_cpus);
1885
1886 /* free irq resource states */
1887 nb_irqs = self->name_tables->nb_irqs;
1888 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_IRQS, &value);
1889 g_assert(type == LTTV_POINTER);
1890 lttv_state_free_irq_states(*(value.v_pointer), nb_irqs);
1891
1892 /* free softirq resource states */
1893 nb_soft_irqs = self->name_tables->nb_soft_irqs;
1894 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_SOFT_IRQS, &value);
1895 g_assert(type == LTTV_POINTER);
1896 lttv_state_free_soft_irq_states(*(value.v_pointer), nb_soft_irqs);
1897
1898 /* free the blkdev states */
1899 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_BLKDEVS, &value);
1900 g_assert(type == LTTV_POINTER);
1901 lttv_state_free_blkdev_hashtable(*(value.v_pointer));
1902
1903 nb_tracefile = self->parent.tracefiles->len;
1904
1905 for(i = 0 ; i < nb_tracefile ; i++) {
1906
1907 type = lttv_attribute_get(tracefiles_tree, i, &name, &value, &is_named);
1908 g_assert(type == LTTV_GOBJECT);
1909 tracefile_tree = *((LttvAttribute **)(value.v_gobject));
1910
1911 type = lttv_attribute_get_by_name(tracefile_tree, LTTV_STATE_EVENT,
1912 &value);
1913 g_assert(type == LTTV_POINTER);
1914 if(*(value.v_pointer) != NULL) g_free(*(value.v_pointer));
1915 }
1916 g_object_unref(G_OBJECT(tracefiles_tree));
1917 }
1918
1919
1920 static void free_saved_state(LttvTraceState *self)
1921 {
1922 guint i, nb;
1923
1924 LttvAttributeType type;
1925
1926 LttvAttributeValue value;
1927
1928 LttvAttributeName name;
1929
1930 gboolean is_named;
1931
1932 LttvAttribute *saved_states;
1933
1934 saved_states = lttv_attribute_find_subdir(self->parent.t_a,
1935 LTTV_STATE_SAVED_STATES);
1936
1937 nb = lttv_attribute_get_number(saved_states);
1938 for(i = 0 ; i < nb ; i++) {
1939 type = lttv_attribute_get(saved_states, i, &name, &value, &is_named);
1940 g_assert(type == LTTV_GOBJECT);
1941 state_saved_free(self, *((LttvAttribute **)value.v_gobject));
1942 }
1943
1944 lttv_attribute_remove_by_name(self->parent.t_a, LTTV_STATE_SAVED_STATES);
1945 }
1946
1947
1948 static void create_max_time(LttvTraceState *tcs)
1949 {
1950 LttvAttributeValue v;
1951
1952 lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_SAVED_STATES_TIME,
1953 LTTV_POINTER, &v);
1954 g_assert(*(v.v_pointer) == NULL);
1955 *(v.v_pointer) = g_new(LttTime,1);
1956 *((LttTime *)*(v.v_pointer)) = ltt_time_zero;
1957 }
1958
1959
1960 static void get_max_time(LttvTraceState *tcs)
1961 {
1962 LttvAttributeValue v;
1963
1964 lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_SAVED_STATES_TIME,
1965 LTTV_POINTER, &v);
1966 g_assert(*(v.v_pointer) != NULL);
1967 tcs->max_time_state_recomputed_in_seek = (LttTime *)*(v.v_pointer);
1968 }
1969
1970
1971 static void free_max_time(LttvTraceState *tcs)
1972 {
1973 LttvAttributeValue v;
1974
1975 lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_SAVED_STATES_TIME,
1976 LTTV_POINTER, &v);
1977 g_free(*(v.v_pointer));
1978 *(v.v_pointer) = NULL;
1979 }
1980
1981 static void create_name_tables(LttvTraceState *tcs)
1982 {
1983 int i;
1984
1985 GString *fe_name = g_string_new("");
1986
1987 LttvNameTables *name_tables = g_new(LttvNameTables, 1);
1988
1989 LttvAttributeValue v;
1990
1991 GArray *hooks;
1992
1993 lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_NAME_TABLES,
1994 LTTV_POINTER, &v);
1995 g_assert(*(v.v_pointer) == NULL);
1996 *(v.v_pointer) = name_tables;
1997
1998 hooks = g_array_sized_new(FALSE, FALSE, sizeof(LttvTraceHook), 1);
1999
2000 if(!lttv_trace_find_hook(tcs->parent.t,
2001 LTT_CHANNEL_KERNEL,
2002 LTT_EVENT_SYSCALL_ENTRY,
2003 FIELD_ARRAY(LTT_FIELD_SYSCALL_ID),
2004 NULL, NULL, &hooks)) {
2005
2006 // th = lttv_trace_hook_get_first(&th);
2007 //
2008 // t = ltt_field_type(lttv_trace_get_hook_field(th, 0));
2009 // nb = ltt_type_element_number(t);
2010 //
2011 // name_tables->syscall_names = g_new(GQuark, nb);
2012 // name_tables->nb_syscalls = nb;
2013 //
2014 // for(i = 0 ; i < nb ; i++) {
2015 // name_tables->syscall_names[i] = ltt_enum_string_get(t, i);
2016 // if(!name_tables->syscall_names[i]) {
2017 // GString *string = g_string_new("");
2018 // g_string_printf(string, "syscall %u", i);
2019 // name_tables->syscall_names[i] = g_quark_from_string(string->str);
2020 // g_string_free(string, TRUE);
2021 // }
2022 // }
2023
2024 name_tables->nb_syscalls = PREALLOC_NB_SYSCALLS;
2025 name_tables->syscall_names = g_new(GQuark, name_tables->nb_syscalls);
2026 for(i = 0 ; i < name_tables->nb_syscalls; i++) {
2027 g_string_printf(fe_name, "syscall %d", i);
2028 name_tables->syscall_names[i] = g_quark_from_string(fe_name->str);
2029 }
2030 } else {
2031 name_tables->syscall_names = NULL;
2032 name_tables->nb_syscalls = 0;
2033 }
2034 lttv_trace_hook_remove_all(&hooks);
2035
2036 if(!lttv_trace_find_hook(tcs->parent.t,
2037 LTT_CHANNEL_KERNEL,
2038 LTT_EVENT_TRAP_ENTRY,
2039 FIELD_ARRAY(LTT_FIELD_TRAP_ID),
2040 NULL, NULL, &hooks) ||
2041 !lttv_trace_find_hook(tcs->parent.t,
2042 LTT_CHANNEL_KERNEL,
2043 LTT_EVENT_PAGE_FAULT_ENTRY,
2044 FIELD_ARRAY(LTT_FIELD_TRAP_ID),
2045 NULL, NULL, &hooks)) {
2046
2047 // th = lttv_trace_hook_get_first(&th);
2048 //
2049 // t = ltt_field_type(lttv_trace_get_hook_field(th, 0));
2050 // //nb = ltt_type_element_number(t);
2051 //
2052 // name_tables->trap_names = g_new(GQuark, nb);
2053 // for(i = 0 ; i < nb ; i++) {
2054 // name_tables->trap_names[i] = g_quark_from_string(
2055 // ltt_enum_string_get(t, i));
2056 // }
2057
2058 name_tables->nb_traps = PREALLOC_NB_TRAPS;
2059 name_tables->trap_names = g_new(GQuark, name_tables->nb_traps);
2060 for(i = 0 ; i < name_tables->nb_traps; i++) {
2061 g_string_printf(fe_name, "trap %d", i);
2062 name_tables->trap_names[i] = g_quark_from_string(fe_name->str);
2063 }
2064 } else {
2065 name_tables->trap_names = NULL;
2066 name_tables->nb_traps = 0;
2067 }
2068 lttv_trace_hook_remove_all(&hooks);
2069
2070 if(!lttv_trace_find_hook(tcs->parent.t,
2071 LTT_CHANNEL_KERNEL,
2072 LTT_EVENT_IRQ_ENTRY,
2073 FIELD_ARRAY(LTT_FIELD_IRQ_ID),
2074 NULL, NULL, &hooks)) {
2075
2076 /*
2077 name_tables->irq_names = g_new(GQuark, nb);
2078 for(i = 0 ; i < nb ; i++) {
2079 name_tables->irq_names[i] = g_quark_from_string(ltt_enum_string_get(t, i));
2080 }
2081 */
2082 /* FIXME: LttvIRQState *irq_states should become a g_array */
2083
2084 name_tables->nb_irqs = PREALLOC_NB_IRQS;
2085 name_tables->irq_names = g_new(GQuark, name_tables->nb_irqs);
2086 for(i = 0 ; i < name_tables->nb_irqs; i++) {
2087 g_string_printf(fe_name, "irq %d", i);
2088 name_tables->irq_names[i] = g_quark_from_string(fe_name->str);
2089 }
2090 } else {
2091 name_tables->nb_irqs = 0;
2092 name_tables->irq_names = NULL;
2093 }
2094 lttv_trace_hook_remove_all(&hooks);
2095 /*
2096 name_tables->soft_irq_names = g_new(GQuark, nb);
2097 for(i = 0 ; i < nb ; i++) {
2098 name_tables->soft_irq_names[i] = g_quark_from_string(ltt_enum_string_get(t, i));
2099 }
2100 */
2101
2102 name_tables->nb_soft_irqs = PREALLOC_NB_SOFT_IRQS;
2103 name_tables->soft_irq_names = g_new(GQuark, name_tables->nb_soft_irqs);
2104 for(i = 0 ; i < name_tables->nb_soft_irqs ; i++) {
2105 g_string_printf(fe_name, "softirq %d", i);
2106 name_tables->soft_irq_names[i] = g_quark_from_string(fe_name->str);
2107 }
2108 g_array_free(hooks, TRUE);
2109
2110 g_string_free(fe_name, TRUE);
2111
2112 #if (__WORDSIZE == 32)
2113 name_tables->kprobe_hash = g_hash_table_new_full(guint64_hash, guint64_equal,
2114 g_free, NULL);
2115 #else
2116 name_tables->kprobe_hash = g_hash_table_new(g_direct_hash, g_direct_equal);
2117 #endif
2118 }
2119
2120
2121 static void get_name_tables(LttvTraceState *tcs)
2122 {
2123 LttvAttributeValue v;
2124
2125 lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_NAME_TABLES,
2126 LTTV_POINTER, &v);
2127 g_assert(*(v.v_pointer) != NULL);
2128 tcs->name_tables = (LttvNameTables *)*(v.v_pointer);
2129 }
2130
2131
2132 static void free_name_tables(LttvTraceState *tcs)
2133 {
2134 LttvNameTables *name_tables;
2135
2136 LttvAttributeValue v;
2137
2138 lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_NAME_TABLES,
2139 LTTV_POINTER, &v);
2140 name_tables = (LttvNameTables *)*(v.v_pointer);
2141 *(v.v_pointer) = NULL;
2142
2143 // g_free(name_tables->eventtype_names);
2144 if(name_tables->syscall_names) g_free(name_tables->syscall_names);
2145 if(name_tables->trap_names) g_free(name_tables->trap_names);
2146 if(name_tables->irq_names) g_free(name_tables->irq_names);
2147 if(name_tables->soft_irq_names) g_free(name_tables->soft_irq_names);
2148 g_hash_table_destroy(name_tables->kprobe_hash);
2149 g_free(name_tables);
2150 }
2151
2152 #ifdef HASH_TABLE_DEBUG
2153
2154 static void test_process(gpointer key, gpointer value, gpointer user_data)
2155 {
2156 LttvProcessState *process = (LttvProcessState *)value;
2157
2158 /* Test for process corruption */
2159 guint stack_len = process->execution_stack->len;
2160 }
2161
2162 static void hash_table_check(GHashTable *table)
2163 {
2164 g_hash_table_foreach(table, test_process, NULL);
2165 }
2166
2167
2168 #endif
2169
2170 /* clears the stack and sets the state passed as argument */
2171 static void cpu_set_base_mode(LttvCPUState *cpust, LttvCPUMode state)
2172 {
2173 g_array_set_size(cpust->mode_stack, 1);
2174 ((GQuark *)cpust->mode_stack->data)[0] = state;
2175 }
2176
2177 static void cpu_push_mode(LttvCPUState *cpust, LttvCPUMode state)
2178 {
2179 g_array_set_size(cpust->mode_stack, cpust->mode_stack->len + 1);
2180 ((GQuark *)cpust->mode_stack->data)[cpust->mode_stack->len - 1] = state;
2181 }
2182
2183 static void cpu_pop_mode(LttvCPUState *cpust)
2184 {
2185 if(cpust->mode_stack->len <= 1)
2186 cpu_set_base_mode(cpust, LTTV_CPU_UNKNOWN);
2187 else
2188 g_array_set_size(cpust->mode_stack, cpust->mode_stack->len - 1);
2189 }
2190
2191 /* clears the stack and sets the state passed as argument */
2192 static void bdev_set_base_mode(LttvBdevState *bdevst, LttvBdevMode state)
2193 {
2194 g_array_set_size(bdevst->mode_stack, 1);
2195 ((GQuark *)bdevst->mode_stack->data)[0] = state;
2196 }
2197
2198 static void bdev_push_mode(LttvBdevState *bdevst, LttvBdevMode state)
2199 {
2200 g_array_set_size(bdevst->mode_stack, bdevst->mode_stack->len + 1);
2201 ((GQuark *)bdevst->mode_stack->data)[bdevst->mode_stack->len - 1] = state;
2202 }
2203
2204 static void bdev_pop_mode(LttvBdevState *bdevst)
2205 {
2206 if(bdevst->mode_stack->len <= 1)
2207 bdev_set_base_mode(bdevst, LTTV_BDEV_UNKNOWN);
2208 else
2209 g_array_set_size(bdevst->mode_stack, bdevst->mode_stack->len - 1);
2210 }
2211
2212 static void irq_set_base_mode(LttvIRQState *irqst, LttvIRQMode state)
2213 {
2214 g_array_set_size(irqst->mode_stack, 1);
2215 ((GQuark *)irqst->mode_stack->data)[0] = state;
2216 }
2217
2218 static void irq_push_mode(LttvIRQState *irqst, LttvIRQMode state)
2219 {
2220 g_array_set_size(irqst->mode_stack, irqst->mode_stack->len + 1);
2221 ((GQuark *)irqst->mode_stack->data)[irqst->mode_stack->len - 1] = state;
2222 }
2223
2224 static void irq_pop_mode(LttvIRQState *irqst)
2225 {
2226 if(irqst->mode_stack->len <= 1)
2227 irq_set_base_mode(irqst, LTTV_IRQ_UNKNOWN);
2228 else
2229 g_array_set_size(irqst->mode_stack, irqst->mode_stack->len - 1);
2230 }
2231
2232 static void push_state(LttvTracefileState *tfs, LttvExecutionMode t,
2233 guint state_id)
2234 {
2235 LttvExecutionState *es;
2236
2237 LttvTraceState *ts = (LttvTraceState*)tfs->parent.t_context;
2238 guint cpu = tfs->cpu;
2239
2240 #ifdef HASH_TABLE_DEBUG
2241 hash_table_check(ts->processes);
2242 #endif
2243 LttvProcessState *process = ts->running_process[cpu];
2244
2245 guint depth = process->execution_stack->len;
2246
2247 process->execution_stack =
2248 g_array_set_size(process->execution_stack, depth + 1);
2249 /* Keep in sync */
2250 process->state =
2251 &g_array_index(process->execution_stack, LttvExecutionState, depth - 1);
2252
2253 es = &g_array_index(process->execution_stack, LttvExecutionState, depth);
2254 es->t = t;
2255 es->n = state_id;
2256 es->entry = es->change = tfs->parent.timestamp;
2257 es->cum_cpu_time = ltt_time_zero;
2258 es->s = process->state->s;
2259 process->state = es;
2260 }
2261
2262 /* pop state
2263 * return 1 when empty, else 0 */
2264 int
2265 lttv_state_pop_state_cleanup(LttvProcessState *process, LttvTracefileState *tfs)
2266 {
2267 guint depth = process->execution_stack->len;
2268
2269 if(depth == 1){
2270 return 1;
2271 }
2272
2273 process->execution_stack =
2274 g_array_set_size(process->execution_stack, depth - 1);
2275 process->state = &g_array_index(process->execution_stack, LttvExecutionState,
2276 depth - 2);
2277 process->state->change = tfs->parent.timestamp;
2278
2279 return 0;
2280 }
2281
2282 static void pop_state(LttvTracefileState *tfs, LttvExecutionMode t)
2283 {
2284 guint cpu = tfs->cpu;
2285 LttvTraceState *ts = (LttvTraceState*)tfs->parent.t_context;
2286 LttvProcessState *process = ts->running_process[cpu];
2287
2288 guint depth = process->execution_stack->len;
2289
2290 if(process->state->t != t){
2291 g_info("Different execution mode type (%lu.%09lu): ignore it\n",
2292 tfs->parent.timestamp.tv_sec, tfs->parent.timestamp.tv_nsec);
2293 g_info("process state has %s when pop_int is %s\n",
2294 g_quark_to_string(process->state->t),
2295 g_quark_to_string(t));
2296 g_info("{ %u, %u, %s, %s, %s }\n",
2297 process->pid,
2298 process->ppid,
2299 g_quark_to_string(process->name),
2300 g_quark_to_string(process->brand),
2301 g_quark_to_string(process->state->s));
2302 return;
2303 }
2304
2305 if(depth == 1){
2306 g_info("Trying to pop last state on stack (%lu.%09lu): ignore it\n",
2307 tfs->parent.timestamp.tv_sec, tfs->parent.timestamp.tv_nsec);
2308 return;
2309 }
2310
2311 process->execution_stack =
2312 g_array_set_size(process->execution_stack, depth - 1);
2313 process->state = &g_array_index(process->execution_stack, LttvExecutionState,
2314 depth - 2);
2315 process->state->change = tfs->parent.timestamp;
2316 }
2317
2318 struct search_result {
2319 const LttTime *time; /* Requested time */
2320 LttTime *best; /* Best result */
2321 };
2322
2323 static gint search_usertrace(gconstpointer a, gconstpointer b)
2324 {
2325 const LttTime *elem_time = (const LttTime*)a;
2326 /* Explicit non const cast */
2327 struct search_result *res = (struct search_result *)b;
2328
2329 if(ltt_time_compare(*elem_time, *(res->time)) < 0) {
2330 /* The usertrace was created before the schedchange */
2331 /* Get larger keys */
2332 return 1;
2333 } else if(ltt_time_compare(*elem_time, *(res->time)) >= 0) {
2334 /* The usertrace was created after the schedchange time */
2335 /* Get smaller keys */
2336 if(res->best) {
2337 if(ltt_time_compare(*elem_time, *res->best) < 0) {
2338 res->best = (LttTime *)elem_time;
2339 }
2340 } else {
2341 res->best = (LttTime *)elem_time;
2342 }
2343 return -1;
2344 }
2345 return 0;
2346 }
2347
2348 static LttvTracefileState *ltt_state_usertrace_find(LttvTraceState *tcs,
2349 guint pid, const LttTime *timestamp)
2350 {
2351 LttvTracefileState *tfs = NULL;
2352 struct search_result res;
2353 /* Find the usertrace associated with a pid and time interval.
2354 * Search in the usertraces by PID (within a hash) and then, for each
2355 * corresponding element of the array, find the first one with creation
2356 * timestamp the lowest, but higher or equal to "timestamp". */
2357 res.time = timestamp;
2358 res.best = NULL;
2359 GTree *usertrace_tree = g_hash_table_lookup(tcs->usertraces,
2360 GUINT_TO_POINTER(pid));
2361 if(usertrace_tree) {
2362 g_tree_search(usertrace_tree, search_usertrace, &res);
2363 if(res.best)
2364 tfs = g_tree_lookup(usertrace_tree, res.best);
2365 }
2366
2367 return tfs;
2368 }
2369
2370 /* Return a new and initialized LttvProcessState structure */
2371
2372 LttvProcessState *lttv_state_create_process(LttvTraceState *tcs,
2373 LttvProcessState *parent, guint cpu, guint pid,
2374 guint tgid, GQuark name, const LttTime *timestamp)
2375 {
2376 LttvProcessState *process = g_new(LttvProcessState, 1);
2377
2378 LttvExecutionState *es;
2379
2380 char buffer[128];
2381
2382 process->pid = pid;
2383 process->tgid = tgid;
2384 process->cpu = cpu;
2385 process->name = name;
2386 process->brand = LTTV_STATE_UNBRANDED;
2387 //process->last_cpu = tfs->cpu_name;
2388 //process->last_cpu_index = ltt_tracefile_num(((LttvTracefileContext*)tfs)->tf);
2389 process->type = LTTV_STATE_USER_THREAD;
2390 process->usertrace = ltt_state_usertrace_find(tcs, pid, timestamp);
2391 process->current_function = 0; //function 0x0 by default.
2392
2393 g_info("Process %u, core %p", process->pid, process);
2394 g_hash_table_insert(tcs->processes, process, process);
2395
2396 if(parent) {
2397 process->ppid = parent->pid;
2398 process->creation_time = *timestamp;
2399 }
2400
2401 /* No parent. This process exists but we are missing all information about
2402 its creation. The birth time is set to zero but we remember the time of
2403 insertion */
2404
2405 else {
2406 process->ppid = 0;
2407 process->creation_time = ltt_time_zero;
2408 }
2409
2410 process->insertion_time = *timestamp;
2411 sprintf(buffer,"%d-%lu.%lu",pid, process->creation_time.tv_sec,
2412 process->creation_time.tv_nsec);
2413 process->pid_time = g_quark_from_string(buffer);
2414 process->cpu = cpu;
2415 process->free_events = 0;
2416 //process->last_cpu = tfs->cpu_name;
2417 //process->last_cpu_index = ltt_tracefile_num(((LttvTracefileContext*)tfs)->tf);
2418 process->execution_stack = g_array_sized_new(FALSE, FALSE,
2419 sizeof(LttvExecutionState), PREALLOCATED_EXECUTION_STACK);
2420 process->execution_stack = g_array_set_size(process->execution_stack, 2);
2421 es = process->state = &g_array_index(process->execution_stack,
2422 LttvExecutionState, 0);
2423 es->t = LTTV_STATE_USER_MODE;
2424 es->n = LTTV_STATE_SUBMODE_NONE;
2425 es->entry = *timestamp;
2426 //g_assert(timestamp->tv_sec != 0);
2427 es->change = *timestamp;
2428 es->cum_cpu_time = ltt_time_zero;
2429 es->s = LTTV_STATE_RUN;
2430
2431 es = process->state = &g_array_index(process->execution_stack,
2432 LttvExecutionState, 1);
2433 es->t = LTTV_STATE_SYSCALL;
2434 es->n = LTTV_STATE_SUBMODE_NONE;
2435 es->entry = *timestamp;
2436 //g_assert(timestamp->tv_sec != 0);
2437 es->change = *timestamp;
2438 es->cum_cpu_time = ltt_time_zero;
2439 es->s = LTTV_STATE_WAIT_FORK;
2440
2441 /* Allocate an empty function call stack. If it's empty, use 0x0. */
2442 process->user_stack = g_array_sized_new(FALSE, FALSE,
2443 sizeof(guint64), 0);
2444
2445 process->fds = g_hash_table_new(g_direct_hash, g_direct_equal);
2446
2447 return process;
2448 }
2449
2450 LttvProcessState *
2451 lttv_state_find_process(LttvTraceState *ts, guint cpu, guint pid)
2452 {
2453 LttvProcessState key;
2454 LttvProcessState *process;
2455
2456 key.pid = pid;
2457 key.cpu = cpu;
2458 process = g_hash_table_lookup(ts->processes, &key);
2459 return process;
2460 }
2461
2462 LttvProcessState *lttv_state_find_process_or_create(LttvTraceState *ts,
2463 guint cpu, guint pid, const LttTime *timestamp)
2464 {
2465 LttvProcessState *process = lttv_state_find_process(ts, cpu, pid);
2466 LttvExecutionState *es;
2467
2468 /* Put ltt_time_zero creation time for unexisting processes */
2469 if(unlikely(process == NULL)) {
2470 process = lttv_state_create_process(ts,
2471 NULL, cpu, pid, 0, LTTV_STATE_UNNAMED, timestamp);
2472 /* We are not sure is it's a kernel thread or normal thread, put the
2473 * bottom stack state to unknown */
2474 process->execution_stack =
2475 g_array_set_size(process->execution_stack, 1);
2476 process->state = es =
2477 &g_array_index(process->execution_stack, LttvExecutionState, 0);
2478 es->t = LTTV_STATE_MODE_UNKNOWN;
2479 es->s = LTTV_STATE_UNNAMED;
2480 }
2481 return process;
2482 }
2483
2484 /* FIXME : this function should be called when we receive an event telling that
2485 * release_task has been called in the kernel. In happens generally when
2486 * the parent waits for its child termination, but may also happens in special
2487 * cases in the child's exit : when the parent ignores its children SIGCCHLD or
2488 * has the flag SA_NOCLDWAIT. It can also happen when the child is part
2489 * of a killed thread group, but isn't the leader.
2490 */
2491 static int exit_process(LttvTracefileState *tfs, LttvProcessState *process)
2492 {
2493 LttvTraceState *ts = LTTV_TRACE_STATE(tfs->parent.t_context);
2494 LttvProcessState key;
2495
2496 /* Wait for both schedule with exit dead and process free to happen.
2497 * They can happen in any order. */
2498 if (++(process->free_events) < 2)
2499 return 0;
2500
2501 key.pid = process->pid;
2502 key.cpu = process->cpu;
2503 g_hash_table_remove(ts->processes, &key);
2504 g_array_free(process->execution_stack, TRUE);
2505 g_array_free(process->user_stack, TRUE);
2506
2507 /* the following also clears the content */
2508 g_hash_table_destroy(process->fds);
2509
2510 g_free(process);
2511 return 1;
2512 }
2513
2514
2515 static void free_process_state(gpointer key, gpointer value,gpointer user_data)
2516 {
2517 g_array_free(((LttvProcessState *)value)->execution_stack, TRUE);
2518 g_array_free(((LttvProcessState *)value)->user_stack, TRUE);
2519
2520 /* the following also clears the content */
2521 g_hash_table_destroy(((LttvProcessState *)value)->fds);
2522
2523 g_free(value);
2524 }
2525
2526
2527 static void lttv_state_free_process_table(GHashTable *processes)
2528 {
2529 g_hash_table_foreach(processes, free_process_state, NULL);
2530 g_hash_table_destroy(processes);
2531 }
2532
2533
2534 static gboolean syscall_entry(void *hook_data, void *call_data)
2535 {
2536 LttvTracefileState *s = (LttvTracefileState *)call_data;
2537 guint cpu = s->cpu;
2538 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
2539 LttvProcessState *process = ts->running_process[cpu];
2540 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2541 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2542 struct marker_field *f = lttv_trace_get_hook_field(th, 0);
2543 LttvExecutionSubmode submode;
2544 LttvNameTables *nt = ((LttvTraceState *)(s->parent.t_context))->name_tables;
2545
2546 guint syscall = ltt_event_get_unsigned(e, f);
2547 expand_syscall_table(ts, syscall);
2548 submode = nt->syscall_names[syscall];
2549 /* There can be no system call from PID 0 : unknown state */
2550 if(process->pid != 0)
2551 push_state(s, LTTV_STATE_SYSCALL, submode);
2552 return FALSE;
2553 }
2554
2555
2556 static gboolean syscall_exit(void *hook_data, void *call_data)
2557 {
2558 LttvTracefileState *s = (LttvTracefileState *)call_data;
2559 guint cpu = s->cpu;
2560 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
2561 LttvProcessState *process = ts->running_process[cpu];
2562
2563 /* There can be no system call from PID 0 : unknown state */
2564 if(process->pid != 0)
2565 pop_state(s, LTTV_STATE_SYSCALL);
2566 return FALSE;
2567 }
2568
2569
2570 static gboolean trap_entry(void *hook_data, void *call_data)
2571 {
2572 LttvTracefileState *s = (LttvTracefileState *)call_data;
2573 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2574 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2575 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2576 struct marker_field *f = lttv_trace_get_hook_field(th, 0);
2577 LttvNameTables *nt = ((LttvTraceState *)(s->parent.t_context))->name_tables;
2578
2579 LttvExecutionSubmode submode;
2580
2581 guint64 trap = ltt_event_get_long_unsigned(e, f);
2582
2583 expand_trap_table(ts, trap);
2584
2585 submode = nt->trap_names[trap];
2586
2587 push_state(s, LTTV_STATE_TRAP, submode);
2588
2589 /* update cpu status */
2590 cpu_push_mode(s->cpu_state, LTTV_CPU_TRAP);
2591
2592 /* update trap status */
2593 g_array_append_val(s->cpu_state->trap_stack, trap);
2594 ts->trap_states[trap].running++;
2595
2596 return FALSE;
2597 }
2598
2599 static gboolean trap_exit(void *hook_data, void *call_data)
2600 {
2601 LttvTracefileState *s = (LttvTracefileState *)call_data;
2602 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2603
2604 pop_state(s, LTTV_STATE_TRAP);
2605
2606 /* update cpu status */
2607 cpu_pop_mode(s->cpu_state);
2608
2609 /* update trap status */
2610 if (s->cpu_state->trap_stack->len > 0) {
2611 gint last = g_array_index(s->cpu_state->trap_stack, gint,
2612 s->cpu_state->trap_stack->len-1);
2613 if(ts->trap_states[last].running)
2614 ts->trap_states[last].running--;
2615 g_array_remove_index(s->cpu_state->trap_stack,
2616 s->cpu_state->trap_stack->len-1);
2617 }
2618 return FALSE;
2619 }
2620
2621 static gboolean irq_entry(void *hook_data, void *call_data)
2622 {
2623 LttvTracefileState *s = (LttvTracefileState *)call_data;
2624 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2625 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2626 //guint8 ev_id = ltt_event_eventtype_id(e);
2627 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2628 struct marker_field *f = lttv_trace_get_hook_field(th, 0);
2629 LttvNameTables *nt = ((LttvTraceState *)(s->parent.t_context))->name_tables;
2630
2631 LttvExecutionSubmode submode;
2632 guint64 irq = ltt_event_get_long_unsigned(e, f);
2633
2634 expand_irq_table(ts, irq);
2635
2636 submode = nt->irq_names[irq];
2637
2638 /* Do something with the info about being in user or system mode when int? */
2639 push_state(s, LTTV_STATE_IRQ, submode);
2640
2641 /* update cpu status */
2642 cpu_push_mode(s->cpu_state, LTTV_CPU_IRQ);
2643
2644 /* update irq status */
2645 g_array_append_val(s->cpu_state->irq_stack, irq);
2646 irq_push_mode(&ts->irq_states[irq], LTTV_IRQ_BUSY);
2647
2648 return FALSE;
2649 }
2650
2651 static gboolean soft_irq_exit(void *hook_data, void *call_data)
2652 {
2653 LttvTracefileState *s = (LttvTracefileState *)call_data;
2654 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2655
2656 pop_state(s, LTTV_STATE_SOFT_IRQ);
2657
2658 /* update cpu status */
2659 cpu_pop_mode(s->cpu_state);
2660
2661 /* update softirq status */
2662 if (s->cpu_state->softirq_stack->len > 0) {
2663 gint last = g_array_index(s->cpu_state->softirq_stack, gint, s->cpu_state->softirq_stack->len-1);
2664 if(ts->soft_irq_states[last].running)
2665 ts->soft_irq_states[last].running--;
2666 g_array_remove_index(s->cpu_state->softirq_stack, s->cpu_state->softirq_stack->len-1);
2667 }
2668 return FALSE;
2669 }
2670
2671 static gboolean irq_exit(void *hook_data, void *call_data)
2672 {
2673 LttvTracefileState *s = (LttvTracefileState *)call_data;
2674 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2675
2676 pop_state(s, LTTV_STATE_IRQ);
2677
2678 /* update cpu status */
2679 cpu_pop_mode(s->cpu_state);
2680
2681 /* update irq status */
2682 if (s->cpu_state->irq_stack->len > 0) {
2683 gint last = g_array_index(s->cpu_state->irq_stack, gint, s->cpu_state->irq_stack->len-1);
2684 g_array_remove_index(s->cpu_state->irq_stack, s->cpu_state->irq_stack->len-1);
2685 irq_pop_mode(&ts->irq_states[last]);
2686 }
2687
2688 return FALSE;
2689 }
2690
2691 static gboolean soft_irq_raise(void *hook_data, void *call_data)
2692 {
2693 LttvTracefileState *s = (LttvTracefileState *)call_data;
2694 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2695 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2696 //guint8 ev_id = ltt_event_eventtype_id(e);
2697 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2698 struct marker_field *f = lttv_trace_get_hook_field(th, 0);
2699
2700 guint64 softirq = ltt_event_get_long_unsigned(e, f);
2701
2702 expand_soft_irq_table(ts, softirq);
2703
2704 /* update softirq status */
2705 /* a soft irq raises are not cumulative */
2706 ts->soft_irq_states[softirq].pending=1;
2707
2708 return FALSE;
2709 }
2710
2711 static gboolean soft_irq_entry(void *hook_data, void *call_data)
2712 {
2713 LttvTracefileState *s = (LttvTracefileState *)call_data;
2714 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2715 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2716 //guint8 ev_id = ltt_event_eventtype_id(e);
2717 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2718 struct marker_field *f = lttv_trace_get_hook_field(th, 0);
2719 LttvExecutionSubmode submode;
2720 guint64 softirq = ltt_event_get_long_unsigned(e, f);
2721 expand_soft_irq_table(ts, softirq);
2722 LttvNameTables *nt = ((LttvTraceState *)(s->parent.t_context))->name_tables;
2723 submode = nt->soft_irq_names[softirq];
2724
2725 /* Do something with the info about being in user or system mode when int? */
2726 push_state(s, LTTV_STATE_SOFT_IRQ, submode);
2727
2728 /* update cpu status */
2729 cpu_push_mode(s->cpu_state, LTTV_CPU_SOFT_IRQ);
2730
2731 /* update softirq status */
2732 g_array_append_val(s->cpu_state->softirq_stack, softirq);
2733 if(ts->soft_irq_states[softirq].pending)
2734 ts->soft_irq_states[softirq].pending--;
2735 ts->soft_irq_states[softirq].running++;
2736
2737 return FALSE;
2738 }
2739
2740 static gboolean enum_interrupt(void *hook_data, void *call_data)
2741 {
2742 LttvTracefileState *s = (LttvTracefileState *)call_data;
2743 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2744 LttvNameTables *nt = ts->name_tables;
2745 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2746 //guint8 ev_id = ltt_event_eventtype_id(e);
2747 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2748
2749 GQuark action = g_quark_from_string(ltt_event_get_string(e,
2750 lttv_trace_get_hook_field(th, 0)));
2751 guint irq = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 1));
2752
2753 expand_irq_table(ts, irq);
2754 nt->irq_names[irq] = action;
2755
2756 return FALSE;
2757 }
2758
2759
2760 static gboolean bdev_request_issue(void *hook_data, void *call_data)
2761 {
2762 LttvTracefileState *s = (LttvTracefileState *)call_data;
2763 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2764 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2765 //guint8 ev_id = ltt_event_eventtype_id(e);
2766 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2767
2768 guint major = ltt_event_get_long_unsigned(e,
2769 lttv_trace_get_hook_field(th, 0));
2770 guint minor = ltt_event_get_long_unsigned(e,
2771 lttv_trace_get_hook_field(th, 1));
2772 guint oper = ltt_event_get_long_unsigned(e,
2773 lttv_trace_get_hook_field(th, 2));
2774 guint32 devcode = MKDEV(major,minor);
2775
2776 /* have we seen this block device before? */
2777 gpointer bdev = get_hashed_bdevstate(ts, devcode);
2778
2779 if(oper == 0)
2780 bdev_push_mode(bdev, LTTV_BDEV_BUSY_READING);
2781 else
2782 bdev_push_mode(bdev, LTTV_BDEV_BUSY_WRITING);
2783
2784 return FALSE;
2785 }
2786
2787 static gboolean bdev_request_complete(void *hook_data, void *call_data)
2788 {
2789 LttvTracefileState *s = (LttvTracefileState *)call_data;
2790 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2791 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2792 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2793
2794 guint major = ltt_event_get_long_unsigned(e,
2795 lttv_trace_get_hook_field(th, 0));
2796 guint minor = ltt_event_get_long_unsigned(e,
2797 lttv_trace_get_hook_field(th, 1));
2798 //guint oper = ltt_event_get_long_unsigned(e,
2799 // lttv_trace_get_hook_field(th, 2));
2800 guint32 devcode = MKDEV(major,minor);
2801
2802 /* have we seen this block device before? */
2803 gpointer bdev = get_hashed_bdevstate(ts, devcode);
2804
2805 /* update block device */
2806 bdev_pop_mode(bdev);
2807
2808 return FALSE;
2809 }
2810
2811 static void push_function(LttvTracefileState *tfs, guint64 funcptr)
2812 {
2813 guint64 *new_func;
2814
2815 LttvTraceState *ts = (LttvTraceState*)tfs->parent.t_context;
2816 guint cpu = tfs->cpu;
2817 LttvProcessState *process = ts->running_process[cpu];
2818
2819 guint depth = process->user_stack->len;
2820
2821 process->user_stack =
2822 g_array_set_size(process->user_stack, depth + 1);
2823
2824 new_func = &g_array_index(process->user_stack, guint64, depth);
2825 *new_func = funcptr;
2826 process->current_function = funcptr;
2827 }
2828
2829 static void pop_function(LttvTracefileState *tfs, guint64 funcptr)
2830 {
2831 guint cpu = tfs->cpu;
2832 LttvTraceState *ts = (LttvTraceState*)tfs->parent.t_context;
2833 LttvProcessState *process = ts->running_process[cpu];
2834
2835 if(process->current_function != funcptr){
2836 g_info("Different functions (%lu.%09lu): ignore it\n",
2837 tfs->parent.timestamp.tv_sec, tfs->parent.timestamp.tv_nsec);
2838 g_info("process state has %" PRIu64 " when pop_function is %" PRIu64 "\n",
2839 process->current_function, funcptr);
2840 g_info("{ %u, %u, %s, %s, %s }\n",
2841 process->pid,
2842 process->ppid,
2843 g_quark_to_string(process->name),
2844 g_quark_to_string(process->brand),
2845 g_quark_to_string(process->state->s));
2846 return;
2847 }
2848 guint depth = process->user_stack->len;
2849
2850 if(depth == 0){
2851 g_info("Trying to pop last function on stack (%lu.%09lu): ignore it\n",
2852 tfs->parent.timestamp.tv_sec, tfs->parent.timestamp.tv_nsec);
2853 return;
2854 }
2855
2856 process->user_stack =
2857 g_array_set_size(process->user_stack, depth - 1);
2858 process->current_function =
2859 g_array_index(process->user_stack, guint64, depth - 2);
2860 }
2861
2862
2863 static gboolean function_entry(void *hook_data, void *call_data)
2864 {
2865 LttvTracefileState *s = (LttvTracefileState *)call_data;
2866 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2867 //guint8 ev_id = ltt_event_eventtype_id(e);
2868 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2869 struct marker_field *f = lttv_trace_get_hook_field(th, 0);
2870 guint64 funcptr = ltt_event_get_long_unsigned(e, f);
2871
2872 push_function(s, funcptr);
2873 return FALSE;
2874 }
2875
2876 static gboolean function_exit(void *hook_data, void *call_data)
2877 {
2878 LttvTracefileState *s = (LttvTracefileState *)call_data;
2879 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2880 //guint8 ev_id = ltt_event_eventtype_id(e);
2881 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2882 struct marker_field *f = lttv_trace_get_hook_field(th, 0);
2883 guint64 funcptr = ltt_event_get_long_unsigned(e, f);
2884
2885 pop_function(s, funcptr);
2886 return FALSE;
2887 }
2888
2889 static gboolean dump_syscall(void *hook_data, void *call_data)
2890 {
2891 LttvTracefileState *s = (LttvTracefileState *)call_data;
2892 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
2893 LttvNameTables *nt = ts->name_tables;
2894 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2895 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2896 guint id;
2897 char *symbol;
2898
2899 id = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 0));
2900 symbol = ltt_event_get_string(e, lttv_trace_get_hook_field(th, 2));
2901
2902 expand_syscall_table(ts, id);
2903 nt->syscall_names[id] = g_quark_from_string(symbol);
2904
2905 return FALSE;
2906 }
2907
2908 static gboolean dump_kprobe(void *hook_data, void *call_data)
2909 {
2910 LttvTracefileState *s = (LttvTracefileState *)call_data;
2911 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
2912 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2913 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2914 guint64 ip;
2915 char *symbol;
2916
2917 ip = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 0));
2918 symbol = ltt_event_get_string(e, lttv_trace_get_hook_field(th, 1));
2919
2920 expand_kprobe_table(ts, ip, symbol);
2921
2922 return FALSE;
2923 }
2924
2925 static gboolean dump_softirq(void *hook_data, void *call_data)
2926 {
2927 LttvTracefileState *s = (LttvTracefileState *)call_data;
2928 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
2929 LttvNameTables *nt = ts->name_tables;
2930 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2931 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2932 guint id;
2933 char *symbol;
2934
2935 id = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 0));
2936 symbol = ltt_event_get_string(e, lttv_trace_get_hook_field(th, 2));
2937
2938 expand_soft_irq_table(ts, id);
2939 nt->soft_irq_names[id] = g_quark_from_string(symbol);
2940
2941 return FALSE;
2942 }
2943
2944 static gboolean sched_try_wakeup(void *hook_data, void *call_data)
2945 {
2946 LttvTracefileState *s = (LttvTracefileState *)call_data;
2947 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2948 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2949 LttvProcessState *process;
2950 gint woken_pid;
2951 guint woken_cpu;
2952
2953 woken_pid = ltt_event_get_int(e, lttv_trace_get_hook_field(th, 0));
2954 woken_cpu = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 1));
2955
2956 process = lttv_state_find_process_or_create(
2957 (LttvTraceState*)s->parent.t_context,
2958 woken_cpu, woken_pid,
2959 &s->parent.timestamp);
2960
2961 if (process->state->s == LTTV_STATE_WAIT || process->state->s == LTTV_STATE_WAIT_FORK)
2962 {
2963 process->state->s = LTTV_STATE_WAIT_CPU;
2964 process->state->change = s->parent.timestamp;
2965 }
2966
2967 g_debug("Wakeup: process %d on CPU %u\n", woken_pid, woken_cpu);
2968
2969 return FALSE;
2970 }
2971
2972 static gboolean schedchange(void *hook_data, void *call_data)
2973 {
2974 LttvTracefileState *s = (LttvTracefileState *)call_data;
2975 guint cpu = s->cpu;
2976 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
2977 LttvProcessState *process = ts->running_process[cpu];
2978 //LttvProcessState *old_process = ts->running_process[cpu];
2979
2980 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2981 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2982 guint pid_in, pid_out;
2983 gint64 state_out;
2984
2985 pid_out = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 0));
2986 pid_in = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 1));
2987 state_out = ltt_event_get_long_int(e, lttv_trace_get_hook_field(th, 2));
2988
2989 if(likely(process != NULL)) {
2990
2991 /* We could not know but it was not the idle process executing.
2992 This should only happen at the beginning, before the first schedule
2993 event, and when the initial information (current process for each CPU)
2994 is missing. It is not obvious how we could, after the fact, compensate
2995 the wrongly attributed statistics. */
2996
2997 //This test only makes sense once the state is known and if there is no
2998 //missing events. We need to silently ignore schedchange coming after a
2999 //process_free, or it causes glitches. (FIXME)
3000 //if(unlikely(process->pid != pid_out)) {
3001 // g_assert(process->pid == 0);
3002 //}
3003 if(process->pid == 0
3004 && process->state->t == LTTV_STATE_MODE_UNKNOWN) {
3005 if(pid_out == 0) {
3006 /*
3007 * Scheduling out of pid 0 at beginning of the trace.
3008 * We are typically in system call mode at this point although
3009 * (FIXME) we might be in a trap handler.
3010 */
3011 g_assert(process->execution_stack->len == 1);
3012 process->state->t = LTTV_STATE_SYSCALL;
3013 process->state->s = LTTV_STATE_WAIT;
3014 process->state->change = s->parent.timestamp;
3015 process->state->entry = s->parent.timestamp;
3016 }
3017 } else {
3018 if(unlikely(process->state->s == LTTV_STATE_EXIT)) {
3019 process->state->s = LTTV_STATE_ZOMBIE;
3020 process->state->change = s->parent.timestamp;
3021 } else {
3022 if(unlikely(state_out == 0)) process->state->s = LTTV_STATE_WAIT_CPU;
3023 else process->state->s = LTTV_STATE_WAIT;
3024 process->state->change = s->parent.timestamp;
3025 }
3026
3027 if(state_out == 32 || state_out == 64) { /* EXIT_DEAD || TASK_DEAD */
3028 /* see sched.h for states */
3029 if (!exit_process(s, process)) {
3030 process->state->s = LTTV_STATE_DEAD;
3031 process->state->change = s->parent.timestamp;
3032 }
3033 }
3034 }
3035 }
3036 process = ts->running_process[cpu] = lttv_state_find_process_or_create(
3037 (LttvTraceState*)s->parent.t_context,
3038 cpu, pid_in,
3039 &s->parent.timestamp);
3040 process->state->s = LTTV_STATE_RUN;
3041 process->cpu = cpu;
3042 if(process->usertrace)
3043 process->usertrace->cpu = cpu;
3044 // process->last_cpu_index = ltt_tracefile_num(((LttvTracefileContext*)s)->tf);
3045 process->state->change = s->parent.timestamp;
3046
3047 /* update cpu status */
3048 if(pid_in == 0)
3049 /* going to idle task */
3050 cpu_set_base_mode(s->cpu_state, LTTV_CPU_IDLE);
3051 else {
3052 /* scheduling a real task.
3053 * we must be careful here:
3054 * if we just schedule()'ed to a process that is
3055 * in a trap, we must put the cpu in trap mode
3056 */
3057 cpu_set_base_mode(s->cpu_state, LTTV_CPU_BUSY);
3058 if(process->state->t == LTTV_STATE_TRAP)
3059 cpu_push_mode(s->cpu_state, LTTV_CPU_TRAP);
3060 }
3061
3062 return FALSE;
3063 }
3064
3065 static gboolean process_fork(void *hook_data, void *call_data)
3066 {
3067 LttvTracefileState *s = (LttvTracefileState *)call_data;
3068 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3069 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3070 guint child_pid; /* In the Linux Kernel, there is one PID per thread. */
3071 guint child_tgid; /* tgid in the Linux kernel is the "real" POSIX PID. */
3072 //LttvProcessState *zombie_process;
3073 guint cpu = s->cpu;
3074 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3075 LttvProcessState *process = ts->running_process[cpu];
3076 LttvProcessState *child_process;
3077 struct marker_field *f;
3078
3079 /* Skip Parent PID param */
3080
3081 /* Child PID */
3082 child_pid = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 1));
3083 s->parent.target_pid = child_pid;
3084
3085 /* Child TGID */
3086 f = lttv_trace_get_hook_field(th, 2);
3087 if (likely(f))
3088 child_tgid = ltt_event_get_unsigned(e, f);
3089 else
3090 child_tgid = 0;
3091
3092 /* Mathieu : it seems like the process might have been scheduled in before the
3093 * fork, and, in a rare case, might be the current process. This might happen
3094 * in a SMP case where we don't have enough precision on the clocks.
3095 *
3096 * Test reenabled after precision fixes on time. (Mathieu) */
3097 #if 0
3098 zombie_process = lttv_state_find_process(ts, ANY_CPU, child_pid);
3099
3100 if(unlikely(zombie_process != NULL)) {
3101 /* Reutilisation of PID. Only now we are sure that the old PID
3102 * has been released. FIXME : should know when release_task happens instead.
3103 */
3104 guint num_cpus = ltt_trace_get_num_cpu(ts->parent.t);
3105 guint i;
3106 for(i=0; i< num_cpus; i++) {
3107 g_assert(zombie_process != ts->running_process[i]);
3108 }
3109
3110 exit_process(s, zombie_process);
3111 }
3112 #endif //0
3113 g_assert(process->pid != child_pid);
3114 // FIXME : Add this test in the "known state" section
3115 // g_assert(process->pid == parent_pid);
3116 child_process = lttv_state_find_process(ts, ANY_CPU, child_pid);
3117 if(child_process == NULL) {
3118 child_process = lttv_state_create_process(ts, process, cpu,
3119 child_pid, child_tgid,
3120 LTTV_STATE_UNNAMED, &s->parent.timestamp);
3121 } else {
3122 /* The process has already been created : due to time imprecision between
3123 * multiple CPUs : it has been scheduled in before creation. Note that we
3124 * shouldn't have this kind of imprecision.
3125 *
3126 * Simply put a correct parent.
3127 */
3128 g_error("Process %u has been created at [%lu.%09lu] "
3129 "and inserted at [%lu.%09lu] before \n"
3130 "fork on cpu %u[%lu.%09lu].\n"
3131 "Probably an unsynchronized TSC problem on the traced machine.",
3132 child_pid,
3133 child_process->creation_time.tv_sec,
3134 child_process->creation_time.tv_nsec,
3135 child_process->insertion_time.tv_sec,
3136 child_process->insertion_time.tv_nsec,
3137 cpu, ltt_event_time(e).tv_sec, ltt_event_time(e).tv_nsec);
3138 //g_assert(0); /* This is a problematic case : the process has been created
3139 // before the fork event */
3140 child_process->ppid = process->pid;
3141 child_process->tgid = child_tgid;
3142 }
3143 g_assert(child_process->name == LTTV_STATE_UNNAMED);
3144 child_process->name = process->name;
3145 child_process->brand = process->brand;
3146
3147 return FALSE;
3148 }
3149
3150 /* We stamp a newly created process as kernel_thread.
3151 * The thread should not be running yet. */
3152 static gboolean process_kernel_thread(void *hook_data, void *call_data)
3153 {
3154 LttvTracefileState *s = (LttvTracefileState *)call_data;
3155 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3156 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3157 guint pid;
3158 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3159 LttvProcessState *process;
3160 LttvExecutionState *es;
3161
3162 /* PID */
3163 pid = (guint)ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 0));
3164 s->parent.target_pid = pid;
3165
3166 process = lttv_state_find_process_or_create(ts, ANY_CPU, pid,
3167 &ltt_time_zero);
3168 if (process->state->s != LTTV_STATE_DEAD) {
3169 process->execution_stack =
3170 g_array_set_size(process->execution_stack, 1);
3171 es = process->state =
3172 &g_array_index(process->execution_stack, LttvExecutionState, 0);
3173 es->t = LTTV_STATE_SYSCALL;
3174 }
3175 process->type = LTTV_STATE_KERNEL_THREAD;
3176
3177 return FALSE;
3178 }
3179
3180 static gboolean process_exit(void *hook_data, void *call_data)
3181 {
3182 LttvTracefileState *s = (LttvTracefileState *)call_data;
3183 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3184 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3185 guint pid;
3186 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3187 LttvProcessState *process; // = ts->running_process[cpu];
3188
3189 pid = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 0));
3190 s->parent.target_pid = pid;
3191
3192 // FIXME : Add this test in the "known state" section
3193 // g_assert(process->pid == pid);
3194
3195 process = lttv_state_find_process(ts, ANY_CPU, pid);
3196 if(likely(process != NULL)) {
3197 process->state->s = LTTV_STATE_EXIT;
3198 }
3199 return FALSE;
3200 }
3201
3202 static gboolean process_free(void *hook_data, void *call_data)
3203 {
3204 LttvTracefileState *s = (LttvTracefileState *)call_data;
3205 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3206 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3207 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3208 guint release_pid;
3209 LttvProcessState *process;
3210
3211 /* PID of the process to release */
3212 release_pid = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 0));
3213 s->parent.target_pid = release_pid;
3214
3215 g_assert(release_pid != 0);
3216
3217 process = lttv_state_find_process(ts, ANY_CPU, release_pid);
3218 if(likely(process != NULL))
3219 exit_process(s, process);
3220 return FALSE;
3221 //DISABLED
3222 if(likely(process != NULL)) {
3223 /* release_task is happening at kernel level : we can now safely release
3224 * the data structure of the process */
3225 //This test is fun, though, as it may happen that
3226 //at time t : CPU 0 : process_free
3227 //at time t+150ns : CPU 1 : schedule out
3228 //Clearly due to time imprecision, we disable it. (Mathieu)
3229 //If this weird case happen, we have no choice but to put the
3230 //Currently running process on the cpu to 0.
3231 //I re-enable it following time precision fixes. (Mathieu)
3232 //Well, in the case where an process is freed by a process on another CPU
3233 //and still scheduled, it happens that this is the schedchange that will
3234 //drop the last reference count. Do not free it here!
3235 guint num_cpus = ltt_trace_get_num_cpu(ts->parent.t);
3236 guint i;
3237 for(i=0; i< num_cpus; i++) {
3238 //g_assert(process != ts->running_process[i]);
3239 if(process == ts->running_process[i]) {
3240 //ts->running_process[i] = lttv_state_find_process(ts, i, 0);
3241 break;
3242 }
3243 }
3244 if(i == num_cpus) /* process is not scheduled */
3245 exit_process(s, process);
3246 }
3247
3248 return FALSE;
3249 }
3250
3251
3252 static gboolean process_exec(void *hook_data, void *call_data)
3253 {
3254 LttvTracefileState *s = (LttvTracefileState *)call_data;
3255 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3256 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3257 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3258 //gchar *name;
3259 guint cpu = s->cpu;
3260 LttvProcessState *process = ts->running_process[cpu];
3261
3262 #if 0//how to use a sequence that must be transformed in a string
3263 /* PID of the process to release */
3264 guint64 name_len = ltt_event_field_element_number(e,
3265 lttv_trace_get_hook_field(th, 0));
3266 //name = ltt_event_get_string(e, lttv_trace_get_hook_field(th, 0));
3267 LttField *child = ltt_event_field_element_select(e,
3268 lttv_trace_get_hook_field(th, 0), 0);
3269 gchar *name_begin =
3270 (gchar*)(ltt_event_data(e)+ltt_event_field_offset(e, child));
3271 gchar *null_term_name = g_new(gchar, name_len+1);
3272 memcpy(null_term_name, name_begin, name_len);
3273 null_term_name[name_len] = '\0';
3274 process->name = g_quark_from_string(null_term_name);
3275 #endif //0
3276
3277 process->name = g_quark_from_string(ltt_event_get_string(e,
3278 lttv_trace_get_hook_field(th, 0)));
3279 process->brand = LTTV_STATE_UNBRANDED;
3280 //g_free(null_term_name);
3281 return FALSE;
3282 }
3283
3284 static gboolean thread_brand(void *hook_data, void *call_data)
3285 {
3286 LttvTracefileState *s = (LttvTracefileState *)call_data;
3287 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3288 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3289 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3290 gchar *name;
3291 guint cpu = s->cpu;
3292 LttvProcessState *process = ts->running_process[cpu];
3293
3294 name = ltt_event_get_string(e, lttv_trace_get_hook_field(th, 0));
3295 process->brand = g_quark_from_string(name);
3296
3297 return FALSE;
3298 }
3299
3300 static gboolean fs_open(void *hook_data, void *call_data)
3301 {
3302 LttvTracefileState *s = (LttvTracefileState *)call_data;
3303 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
3304 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3305 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3306 struct marker_field *f;
3307 guint cpu = s->cpu;
3308 int fd;
3309 char *filename;
3310 LttvProcessState *process = ts->running_process[cpu];
3311
3312 f = lttv_trace_get_hook_field(th, 0);
3313 fd = ltt_event_get_int(e, f);
3314
3315 f = lttv_trace_get_hook_field(th, 1);
3316 filename = ltt_event_get_string(e, f);
3317
3318 g_hash_table_insert(process->fds, (gpointer)(long)fd,
3319 (gpointer)(unsigned long)g_quark_from_string(filename));
3320
3321 return FALSE;
3322 }
3323
3324 static void print_stack(LttvProcessState *process)
3325 {
3326 LttvExecutionState *es;
3327 int i;
3328
3329 g_debug("Execution stack for process %u %s:\n",
3330 process->pid, g_quark_to_string(process->name));
3331
3332 for (i = 0; i < process->execution_stack->len; i++) {
3333 es = &g_array_index(process->execution_stack,
3334 LttvExecutionState, i);
3335 g_debug("Depth %d mode %s submode %s status %s\n",
3336 i, g_quark_to_string(es->t),
3337 g_quark_to_string(es->n),
3338 g_quark_to_string(es->s));
3339 }
3340
3341 }
3342
3343 static void fix_process(gpointer key, gpointer value, gpointer user_data)
3344 {
3345 LttvProcessState *process;
3346 LttvExecutionState *es;
3347 process = (LttvProcessState *)value;
3348 LttTime *timestamp = (LttTime*)user_data;
3349
3350 print_stack(process);
3351
3352 if(process->type == LTTV_STATE_KERNEL_THREAD) {
3353 es = &g_array_index(process->execution_stack, LttvExecutionState, 0);
3354 if(es->t == LTTV_STATE_MAYBE_SYSCALL) {
3355 es->t = LTTV_STATE_SYSCALL;
3356 es->n = LTTV_STATE_SUBMODE_NONE;
3357 es->entry = *timestamp;
3358 es->change = *timestamp;
3359 es->cum_cpu_time = ltt_time_zero;
3360 if(es->s == LTTV_STATE_UNNAMED)
3361 es->s = LTTV_STATE_WAIT;
3362 }
3363 } else {
3364 es = &g_array_index(process->execution_stack, LttvExecutionState, 0);
3365 if(es->t == LTTV_STATE_MAYBE_USER_MODE) {
3366 es->t = LTTV_STATE_USER_MODE;
3367 es->n = LTTV_STATE_SUBMODE_NONE;
3368 es->entry = *timestamp;
3369 //g_assert(timestamp->tv_sec != 0);
3370 es->change = *timestamp;
3371 es->cum_cpu_time = ltt_time_zero;
3372 if(es->s == LTTV_STATE_UNNAMED)
3373 es->s = LTTV_STATE_RUN;
3374
3375 if(process->execution_stack->len == 1) {
3376 /* Still in bottom unknown mode, means we either:
3377 * - never did a system call
3378 * - are scheduled out from user mode.
3379 * May be either in user mode, syscall mode, running or waiting.*/
3380 /* CHECK : we may be tagging syscall mode when being user mode
3381 * (should be fixed now) */
3382 if (es->s == LTTV_STATE_WAIT_CPU) {
3383 /* nothing to do: scheduled out from userspace */
3384 } else {
3385 process->execution_stack =
3386 g_array_set_size(process->execution_stack, 2);
3387 es = process->state = &g_array_index(process->execution_stack,
3388 LttvExecutionState, 1);
3389 es->t = LTTV_STATE_SYSCALL;
3390 es->n = LTTV_STATE_SUBMODE_NONE;
3391 es->entry = *timestamp;
3392 //g_assert(timestamp->tv_sec != 0);
3393 es->change = *timestamp;
3394 es->cum_cpu_time = ltt_time_zero;
3395 if(es->s == LTTV_STATE_WAIT_FORK)
3396 es->s = LTTV_STATE_WAIT;
3397 }
3398 }
3399 }
3400 }
3401 }
3402
3403 static gboolean statedump_end(void *hook_data, void *call_data)
3404 {
3405 LttvTracefileState *s = (LttvTracefileState *)call_data;
3406 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3407 LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
3408 //LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3409 //LttvTraceHook *th = (LttvTraceHook *)hook_data;
3410
3411 /* For all processes */
3412 /* if kernel thread, if stack[0] is unknown, set to syscall mode, wait */
3413 /* else, if stack[0] is unknown, set to user mode, running */
3414
3415 g_hash_table_foreach(ts->processes, fix_process, &tfc->timestamp);
3416
3417 return FALSE;
3418 }
3419
3420 static gboolean enum_process_state(void *hook_data, void *call_data)
3421 {
3422 LttvTracefileState *s = (LttvTracefileState *)call_data;
3423 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3424 //It's slow : optimise later by doing this before reading trace.
3425 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3426 guint parent_pid;
3427 guint pid;
3428 guint tgid;
3429 gchar * command;
3430 guint cpu = s->cpu;
3431 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3432 LttvProcessState *process = ts->running_process[cpu];
3433 LttvProcessState *parent_process;
3434 struct marker_field *f;
3435 GQuark type;
3436 LttvExecutionState *es;
3437 guint i, nb_cpus;
3438
3439 /* PID */
3440 pid = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 0));
3441 s->parent.target_pid = pid;
3442
3443 /* Parent PID */
3444 parent_pid = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 1));
3445
3446 /* Command name */
3447 command = ltt_event_get_string(e, lttv_trace_get_hook_field(th, 2));
3448
3449 /* type */
3450 f = lttv_trace_get_hook_field(th, 3);
3451 type = ltt_enum_string_get(f, ltt_event_get_unsigned(e, f));
3452
3453 //FIXME: type is rarely used, enum must match possible types.
3454
3455 /* Skip mode 4th param */
3456
3457 /* Skip submode 5th param */
3458
3459 /* Skip status 6th param */
3460
3461 /* TGID */
3462 f = lttv_trace_get_hook_field(th, 7);
3463 if(f)
3464 tgid = ltt_event_get_unsigned(e, f);
3465 else
3466 tgid = 0;
3467
3468 if(pid == 0) {
3469 nb_cpus = ltt_trace_get_num_cpu(ts->parent.t);
3470 for(i=0; i<nb_cpus; i++) {
3471 process = lttv_state_find_process(ts, i, pid);
3472 g_assert(process != NULL);
3473
3474 process->ppid = parent_pid;
3475 process->tgid = tgid;
3476 process->name = g_quark_from_string(command);
3477 es = &g_array_index(process->execution_stack, LttvExecutionState, 0);
3478 process->type = LTTV_STATE_KERNEL_THREAD;
3479 }
3480
3481 } else {
3482 /* The process might exist if a process was forked while performing the
3483 * state dump. */
3484 process = lttv_state_find_process(ts, ANY_CPU, pid);
3485 if(process == NULL) {
3486 parent_process = lttv_state_find_process(ts, ANY_CPU, parent_pid);
3487 process = lttv_state_create_process(ts, parent_process, cpu,
3488 pid, tgid, g_quark_from_string(command),
3489 &s->parent.timestamp);
3490
3491 /* Keep the stack bottom : a running user mode */
3492 /* Disabled because of inconsistencies in the current statedump states. */
3493 if(type == LTTV_STATE_KERNEL_THREAD) {
3494 /* Only keep the bottom
3495 * FIXME Kernel thread : can be in syscall or interrupt or trap. */
3496 /* Will cause expected trap when in fact being syscall (even after end of
3497 * statedump event)
3498 * Will cause expected interrupt when being syscall. (only before end of
3499 * statedump event) */
3500 // This will cause a "popping last state on stack, ignoring it."
3501 process->execution_stack = g_array_set_size(process->execution_stack, 1);
3502 es = process->state = &g_array_index(process->execution_stack,
3503 LttvExecutionState, 0);
3504 process->type = LTTV_STATE_KERNEL_THREAD;
3505 es->t = LTTV_STATE_MAYBE_SYSCALL;
3506 es->s = LTTV_STATE_UNNAMED;
3507 es->n = LTTV_STATE_SUBMODE_UNKNOWN;
3508 //es->s = status;
3509 //es->n = submode;
3510 } else {
3511 /* User space process :
3512 * bottom : user mode
3513 * either currently running or scheduled out.
3514 * can be scheduled out because interrupted in (user mode or in syscall)
3515 * or because of an explicit call to the scheduler in syscall. Note that
3516 * the scheduler call comes after the irq_exit, so never in interrupt
3517 * context. */
3518 // temp workaround : set size to 1 : only have user mode bottom of stack.
3519 // will cause g_info message of expected syscall mode when in fact being
3520 // in user mode. Can also cause expected trap when in fact being user
3521 // mode in the event of a page fault reenabling interrupts in the handler.
3522 // Expected syscall and trap can also happen after the end of statedump
3523 // This will cause a "popping last state on stack, ignoring it."
3524 process->execution_stack = g_array_set_size(process->execution_stack, 1);
3525 es = process->state = &g_array_index(process->execution_stack,
3526 LttvExecutionState, 0);
3527 es->t = LTTV_STATE_MAYBE_USER_MODE;
3528 es->s = LTTV_STATE_UNNAMED;
3529 es->n = LTTV_STATE_SUBMODE_UNKNOWN;
3530 //es->s = status;
3531 //es->n = submode;
3532 }
3533 #if 0
3534 /* UNKNOWN STATE */
3535 {
3536 es = process->state = &g_array_index(process->execution_stack,
3537 LttvExecutionState, 1);
3538 es->t = LTTV_STATE_MODE_UNKNOWN;
3539 es->s = LTTV_STATE_UNNAMED;
3540 es->n = LTTV_STATE_SUBMODE_UNKNOWN;
3541 }
3542 #endif //0
3543 } else {
3544 /* The process has already been created :
3545 * Probably was forked while dumping the process state or
3546 * was simply scheduled in prior to get the state dump event.
3547 */
3548 process->ppid = parent_pid;
3549 process->tgid = tgid;
3550 process->name = g_quark_from_string(command);
3551 process->type = type;
3552 es = &g_array_index(process->execution_stack, LttvExecutionState, 0);
3553 #if 0
3554 if(es->t == LTTV_STATE_MODE_UNKNOWN) {
3555 if(type == LTTV_STATE_KERNEL_THREAD)
3556 es->t = LTTV_STATE_SYSCALL;
3557 else
3558 es->t = LTTV_STATE_USER_MODE;
3559 }
3560 #endif //0
3561 /* Don't mess around with the stack, it will eventually become
3562 * ok after the end of state dump. */
3563 }
3564 }
3565
3566 return FALSE;
3567 }
3568
3569 gint lttv_state_hook_add_event_hooks(void *hook_data, void *call_data)
3570 {
3571 LttvTracesetState *tss = (LttvTracesetState*)(call_data);
3572
3573 lttv_state_add_event_hooks(tss);
3574
3575 return 0;
3576 }
3577
3578 void lttv_state_add_event_hooks(LttvTracesetState *self)
3579 {
3580 LttvTraceset *traceset = self->parent.ts;
3581
3582 guint i, j, k, nb_trace, nb_tracefile;
3583
3584 LttvTraceState *ts;
3585
3586 LttvTracefileState *tfs;
3587
3588 GArray *hooks;
3589
3590 LttvTraceHook *th;
3591
3592 LttvAttributeValue val;
3593
3594 nb_trace = lttv_traceset_number(traceset);
3595 for(i = 0 ; i < nb_trace ; i++) {
3596 ts = (LttvTraceState *)self->parent.traces[i];
3597
3598 /* Find the eventtype id for the following events and register the
3599 associated by id hooks. */
3600
3601 hooks = g_array_sized_new(FALSE, FALSE, sizeof(LttvTraceHook), 20);
3602 //hooks = g_array_set_size(hooks, 19); // Max possible number of hooks.
3603 //hn = 0;
3604
3605 lttv_trace_find_hook(ts->parent.t,
3606 LTT_CHANNEL_KERNEL,
3607 LTT_EVENT_SYSCALL_ENTRY,
3608 FIELD_ARRAY(LTT_FIELD_SYSCALL_ID),
3609 syscall_entry, NULL, &hooks);
3610
3611 lttv_trace_find_hook(ts->parent.t,
3612 LTT_CHANNEL_KERNEL,
3613 LTT_EVENT_SYSCALL_EXIT,
3614 NULL,
3615 syscall_exit, NULL, &hooks);
3616
3617 lttv_trace_find_hook(ts->parent.t,
3618 LTT_CHANNEL_KERNEL,
3619 LTT_EVENT_TRAP_ENTRY,
3620 FIELD_ARRAY(LTT_FIELD_TRAP_ID),
3621 trap_entry, NULL, &hooks);
3622
3623 lttv_trace_find_hook(ts->parent.t,
3624 LTT_CHANNEL_KERNEL,
3625 LTT_EVENT_TRAP_EXIT,
3626 NULL,
3627 trap_exit, NULL, &hooks);
3628
3629 lttv_trace_find_hook(ts->parent.t,
3630 LTT_CHANNEL_KERNEL,
3631 LTT_EVENT_PAGE_FAULT_ENTRY,
3632 FIELD_ARRAY(LTT_FIELD_TRAP_ID),
3633 trap_entry, NULL, &hooks);
3634
3635 lttv_trace_find_hook(ts->parent.t,
3636 LTT_CHANNEL_KERNEL,
3637 LTT_EVENT_PAGE_FAULT_EXIT,
3638 NULL,
3639 trap_exit, NULL, &hooks);
3640
3641 lttv_trace_find_hook(ts->parent.t,
3642 LTT_CHANNEL_KERNEL,
3643 LTT_EVENT_PAGE_FAULT_NOSEM_ENTRY,
3644 FIELD_ARRAY(LTT_FIELD_TRAP_ID),
3645 trap_entry, NULL, &hooks);
3646
3647 lttv_trace_find_hook(ts->parent.t,
3648 LTT_CHANNEL_KERNEL,
3649 LTT_EVENT_PAGE_FAULT_NOSEM_EXIT,
3650 NULL,
3651 trap_exit, NULL, &hooks);
3652
3653 lttv_trace_find_hook(ts->parent.t,
3654 LTT_CHANNEL_KERNEL,
3655 LTT_EVENT_IRQ_ENTRY,
3656 FIELD_ARRAY(LTT_FIELD_IRQ_ID),
3657 irq_entry, NULL, &hooks);
3658
3659 lttv_trace_find_hook(ts->parent.t,
3660 LTT_CHANNEL_KERNEL,
3661 LTT_EVENT_IRQ_EXIT,
3662 NULL,
3663 irq_exit, NULL, &hooks);
3664
3665 lttv_trace_find_hook(ts->parent.t,
3666 LTT_CHANNEL_KERNEL,
3667 LTT_EVENT_SOFT_IRQ_RAISE,
3668 FIELD_ARRAY(LTT_FIELD_SOFT_IRQ_ID),
3669 soft_irq_raise, NULL, &hooks);
3670
3671 lttv_trace_find_hook(ts->parent.t,
3672 LTT_CHANNEL_KERNEL,
3673 LTT_EVENT_SOFT_IRQ_ENTRY,
3674 FIELD_ARRAY(LTT_FIELD_SOFT_IRQ_ID),
3675 soft_irq_entry, NULL, &hooks);
3676
3677 lttv_trace_find_hook(ts->parent.t,
3678 LTT_CHANNEL_KERNEL,
3679 LTT_EVENT_SOFT_IRQ_EXIT,
3680 NULL,
3681 soft_irq_exit, NULL, &hooks);
3682
3683 lttv_trace_find_hook(ts->parent.t,
3684 LTT_CHANNEL_KERNEL,
3685 LTT_EVENT_SCHED_SCHEDULE,
3686 FIELD_ARRAY(LTT_FIELD_PREV_PID, LTT_FIELD_NEXT_PID,
3687 LTT_FIELD_PREV_STATE),
3688 schedchange, NULL, &hooks);
3689
3690 lttv_trace_find_hook(ts->parent.t,
3691 LTT_CHANNEL_KERNEL,
3692 LTT_EVENT_SCHED_TRY_WAKEUP,
3693 FIELD_ARRAY(LTT_FIELD_PID, LTT_FIELD_CPU_ID, LTT_FIELD_STATE),
3694 sched_try_wakeup, NULL, &hooks);
3695
3696 lttv_trace_find_hook(ts->parent.t,
3697 LTT_CHANNEL_KERNEL,
3698 LTT_EVENT_PROCESS_FORK,
3699 FIELD_ARRAY(LTT_FIELD_PARENT_PID, LTT_FIELD_CHILD_PID,
3700 LTT_FIELD_CHILD_TGID),
3701 process_fork, NULL, &hooks);
3702
3703 lttv_trace_find_hook(ts->parent.t,
3704 LTT_CHANNEL_KERNEL,
3705 LTT_EVENT_KTHREAD_CREATE,
3706 FIELD_ARRAY(LTT_FIELD_PID),
3707 process_kernel_thread, NULL, &hooks);
3708
3709 lttv_trace_find_hook(ts->parent.t,
3710 LTT_CHANNEL_KERNEL,
3711 LTT_EVENT_PROCESS_EXIT,
3712 FIELD_ARRAY(LTT_FIELD_PID),
3713 process_exit, NULL, &hooks);
3714
3715 lttv_trace_find_hook(ts->parent.t,
3716 LTT_CHANNEL_KERNEL,
3717 LTT_EVENT_PROCESS_FREE,
3718 FIELD_ARRAY(LTT_FIELD_PID),
3719 process_free, NULL, &hooks);
3720
3721 lttv_trace_find_hook(ts->parent.t,
3722 LTT_CHANNEL_FS,
3723 LTT_EVENT_EXEC,
3724 FIELD_ARRAY(LTT_FIELD_FILENAME),
3725 process_exec, NULL, &hooks);
3726
3727 lttv_trace_find_hook(ts->parent.t,
3728 LTT_CHANNEL_USERSPACE,
3729 LTT_EVENT_THREAD_BRAND,
3730 FIELD_ARRAY(LTT_FIELD_NAME),
3731 thread_brand, NULL, &hooks);
3732
3733 /* statedump-related hooks */
3734 lttv_trace_find_hook(ts->parent.t,
3735 LTT_CHANNEL_TASK_STATE,
3736 LTT_EVENT_PROCESS_STATE,
3737 FIELD_ARRAY(LTT_FIELD_PID, LTT_FIELD_PARENT_PID, LTT_FIELD_NAME,
3738 LTT_FIELD_TYPE, LTT_FIELD_MODE, LTT_FIELD_SUBMODE,
3739 LTT_FIELD_STATUS, LTT_FIELD_TGID),
3740 enum_process_state, NULL, &hooks);
3741
3742 lttv_trace_find_hook(ts->parent.t,
3743 LTT_CHANNEL_GLOBAL_STATE,
3744 LTT_EVENT_STATEDUMP_END,
3745 NULL,
3746 statedump_end, NULL, &hooks);
3747
3748 lttv_trace_find_hook(ts->parent.t,
3749 LTT_CHANNEL_IRQ_STATE,
3750 LTT_EVENT_LIST_INTERRUPT,
3751 FIELD_ARRAY(LTT_FIELD_ACTION, LTT_FIELD_IRQ_ID),
3752 enum_interrupt, NULL, &hooks);
3753
3754 lttv_trace_find_hook(ts->parent.t,
3755 LTT_CHANNEL_BLOCK,
3756 LTT_EVENT_REQUEST_ISSUE,
3757 FIELD_ARRAY(LTT_FIELD_MAJOR, LTT_FIELD_MINOR, LTT_FIELD_OPERATION),
3758 bdev_request_issue, NULL, &hooks);
3759
3760 lttv_trace_find_hook(ts->parent.t,
3761 LTT_CHANNEL_BLOCK,
3762 LTT_EVENT_REQUEST_COMPLETE,
3763 FIELD_ARRAY(LTT_FIELD_MAJOR, LTT_FIELD_MINOR, LTT_FIELD_OPERATION),
3764 bdev_request_complete, NULL, &hooks);
3765
3766 lttv_trace_find_hook(ts->parent.t,
3767 LTT_CHANNEL_USERSPACE,
3768 LTT_EVENT_FUNCTION_ENTRY,
3769 FIELD_ARRAY(LTT_FIELD_THIS_FN, LTT_FIELD_CALL_SITE),
3770 function_entry, NULL, &hooks);
3771
3772 lttv_trace_find_hook(ts->parent.t,
3773 LTT_CHANNEL_USERSPACE,
3774 LTT_EVENT_FUNCTION_EXIT,
3775 FIELD_ARRAY(LTT_FIELD_THIS_FN, LTT_FIELD_CALL_SITE),
3776 function_exit, NULL, &hooks);
3777
3778 lttv_trace_find_hook(ts->parent.t,
3779 LTT_CHANNEL_SYSCALL_STATE,
3780 LTT_EVENT_SYS_CALL_TABLE,
3781 FIELD_ARRAY(LTT_FIELD_ID, LTT_FIELD_ADDRESS, LTT_FIELD_SYMBOL),
3782 dump_syscall, NULL, &hooks);
3783
3784 lttv_trace_find_hook(ts->parent.t,
3785 LTT_CHANNEL_KPROBE_STATE,
3786 LTT_EVENT_KPROBE_TABLE,
3787 FIELD_ARRAY(LTT_FIELD_IP, LTT_FIELD_SYMBOL),
3788 dump_kprobe, NULL, &hooks);
3789
3790 lttv_trace_find_hook(ts->parent.t,
3791 LTT_CHANNEL_SOFTIRQ_STATE,
3792 LTT_EVENT_SOFTIRQ_VEC,
3793 FIELD_ARRAY(LTT_FIELD_ID, LTT_FIELD_ADDRESS, LTT_FIELD_SYMBOL),
3794 dump_softirq, NULL, &hooks);
3795
3796 lttv_trace_find_hook(ts->parent.t,
3797 LTT_CHANNEL_FS,
3798 LTT_EVENT_OPEN,
3799 FIELD_ARRAY(LTT_FIELD_FD, LTT_FIELD_FILENAME),
3800 fs_open, NULL, &hooks);
3801
3802 /* Add these hooks to each event_by_id hooks list */
3803
3804 nb_tracefile = ts->parent.tracefiles->len;
3805
3806 for(j = 0 ; j < nb_tracefile ; j++) {
3807 tfs =
3808 LTTV_TRACEFILE_STATE(g_array_index(ts->parent.tracefiles,
3809 LttvTracefileContext*, j));
3810
3811 for(k = 0 ; k < hooks->len ; k++) {
3812 th = &g_array_index(hooks, LttvTraceHook, k);
3813 if (th->mdata == tfs->parent.tf->mdata)
3814 lttv_hooks_add(
3815 lttv_hooks_by_id_find(tfs->parent.event_by_id, th->id),
3816 th->h,
3817 th,
3818 LTTV_PRIO_STATE);
3819 }
3820 }
3821 lttv_attribute_find(ts->parent.a, LTTV_STATE_HOOKS, LTTV_POINTER, &val);
3822 *(val.v_pointer) = hooks;
3823 }
3824 }
3825
3826 gint lttv_state_hook_remove_event_hooks(void *hook_data, void *call_data)
3827 {
3828 LttvTracesetState *tss = (LttvTracesetState*)(call_data);
3829
3830 lttv_state_remove_event_hooks(tss);
3831
3832 return 0;
3833 }
3834
3835 void lttv_state_remove_event_hooks(LttvTracesetState *self)
3836 {
3837 LttvTraceset *traceset = self->parent.ts;
3838
3839 guint i, j, k, nb_trace, nb_tracefile;
3840
3841 LttvTraceState *ts;
3842
3843 LttvTracefileState *tfs;
3844
3845 GArray *hooks;
3846
3847 LttvTraceHook *th;
3848
3849 LttvAttributeValue val;
3850
3851 nb_trace = lttv_traceset_number(traceset);
3852 for(i = 0 ; i < nb_trace ; i++) {
3853 ts = LTTV_TRACE_STATE(self->parent.traces[i]);
3854
3855 lttv_attribute_find(ts->parent.a, LTTV_STATE_HOOKS, LTTV_POINTER, &val);
3856 hooks = *(val.v_pointer);
3857
3858 /* Remove these hooks from each event_by_id hooks list */
3859
3860 nb_tracefile = ts->parent.tracefiles->len;
3861
3862 for(j = 0 ; j < nb_tracefile ; j++) {
3863 tfs =
3864 LTTV_TRACEFILE_STATE(g_array_index(ts->parent.tracefiles,
3865 LttvTracefileContext*, j));
3866
3867 for(k = 0 ; k < hooks->len ; k++) {
3868 th = &g_array_index(hooks, LttvTraceHook, k);
3869 if (th->mdata == tfs->parent.tf->mdata)
3870 lttv_hooks_remove_data(
3871 lttv_hooks_by_id_find(tfs->parent.event_by_id, th->id),
3872 th->h,
3873 th);
3874 }
3875 }
3876 lttv_trace_hook_remove_all(&hooks);
3877 g_array_free(hooks, TRUE);
3878 }
3879 }
3880
3881 static gboolean state_save_event_hook(void *hook_data, void *call_data)
3882 {
3883 guint *event_count = (guint*)hook_data;
3884
3885 /* Only save at LTTV_STATE_SAVE_INTERVAL */
3886 if(likely((*event_count)++ < LTTV_STATE_SAVE_INTERVAL))
3887 return FALSE;
3888 else
3889 *event_count = 0;
3890
3891 LttvTracefileState *self = (LttvTracefileState *)call_data;
3892
3893 LttvTraceState *tcs = (LttvTraceState *)(self->parent.t_context);
3894
3895 LttvAttribute *saved_states_tree, *saved_state_tree;
3896
3897 LttvAttributeValue value;
3898
3899 saved_states_tree = lttv_attribute_find_subdir(tcs->parent.t_a,
3900 LTTV_STATE_SAVED_STATES);
3901 saved_state_tree = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
3902 value = lttv_attribute_add(saved_states_tree,
3903 lttv_attribute_get_number(saved_states_tree), LTTV_GOBJECT);
3904 *(value.v_gobject) = (GObject *)saved_state_tree;
3905 value = lttv_attribute_add(saved_state_tree, LTTV_STATE_TIME, LTTV_TIME);
3906 *(value.v_time) = self->parent.timestamp;
3907 lttv_state_save(tcs, saved_state_tree);
3908 g_debug("Saving state at time %lu.%lu", self->parent.timestamp.tv_sec,
3909 self->parent.timestamp.tv_nsec);
3910
3911 *(tcs->max_time_state_recomputed_in_seek) = self->parent.timestamp;
3912
3913 return FALSE;
3914 }
3915
3916 static gboolean state_save_after_trace_hook(void *hook_data, void *call_data)
3917 {
3918 LttvTraceState *tcs = (LttvTraceState *)(call_data);
3919
3920 *(tcs->max_time_state_recomputed_in_seek) = tcs->parent.time_span.end_time;
3921
3922 return FALSE;
3923 }
3924
3925 guint lttv_state_current_cpu(LttvTracefileState *tfs)
3926 {
3927 return tfs->cpu;
3928 }
3929
3930
3931
3932 #if 0
3933 static gboolean block_start(void *hook_data, void *call_data)
3934 {
3935 LttvTracefileState *self = (LttvTracefileState *)call_data;
3936
3937 LttvTracefileState *tfcs;
3938
3939 LttvTraceState *tcs = (LttvTraceState *)(self->parent.t_context);
3940
3941 LttEventPosition *ep;
3942
3943 guint i, nb_block, nb_event, nb_tracefile;
3944
3945 LttTracefile *tf;
3946
3947 LttvAttribute *saved_states_tree, *saved_state_tree;
3948
3949 LttvAttributeValue value;
3950
3951 ep = ltt_event_position_new();
3952
3953 nb_tracefile = tcs->parent.tracefiles->len;
3954
3955 /* Count the number of events added since the last block end in any
3956 tracefile. */
3957
3958 for(i = 0 ; i < nb_tracefile ; i++) {
3959 tfcs =
3960 LTTV_TRACEFILE_STATE(&g_array_index(tcs->parent.tracefiles,
3961 LttvTracefileContext, i));
3962 ltt_event_position(tfcs->parent.e, ep);
3963 ltt_event_position_get(ep, &nb_block, &nb_event, &tf);
3964 tcs->nb_event += nb_event - tfcs->saved_position;
3965 tfcs->saved_position = nb_event;
3966 }
3967 g_free(ep);
3968
3969 if(tcs->nb_event >= tcs->save_interval) {
3970 saved_states_tree = lttv_attribute_find_subdir(tcs->parent.t_a,
3971 LTTV_STATE_SAVED_STATES);
3972 saved_state_tree = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
3973 value = lttv_attribute_add(saved_states_tree,
3974 lttv_attribute_get_number(saved_states_tree), LTTV_GOBJECT);
3975 *(value.v_gobject) = (GObject *)saved_state_tree;
3976 value = lttv_attribute_add(saved_state_tree, LTTV_STATE_TIME, LTTV_TIME);
3977 *(value.v_time) = self->parent.timestamp;
3978 lttv_state_save(tcs, saved_state_tree);
3979 tcs->nb_event = 0;
3980 g_debug("Saving state at time %lu.%lu", self->parent.timestamp.tv_sec,
3981 self->parent.timestamp.tv_nsec);
3982 }
3983 *(tcs->max_time_state_recomputed_in_seek) = self->parent.timestamp;
3984 return FALSE;
3985 }
3986 #endif //0
3987
3988 #if 0
3989 static gboolean block_end(void *hook_data, void *call_data)
3990 {
3991 LttvTracefileState *self = (LttvTracefileState *)call_data;
3992
3993 LttvTraceState *tcs = (LttvTraceState *)(self->parent.t_context);
3994
3995 LttTracefile *tf;
3996
3997 LttEventPosition *ep;
3998
3999 guint nb_block, nb_event;
4000
4001 ep = ltt_event_position_new();
4002 ltt_event_position(self->parent.e, ep);
4003 ltt_event_position_get(ep, &nb_block, &nb_event, &tf);
4004 tcs->nb_event += nb_event - self->saved_position + 1;
4005 self->saved_position = 0;
4006 *(tcs->max_time_state_recomputed_in_seek) = self->parent.timestamp;
4007 g_free(ep);
4008
4009 return FALSE;
4010 }
4011 #endif //0
4012 #if 0
4013 void lttv_state_save_add_event_hooks(LttvTracesetState *self)
4014 {
4015 LttvTraceset *traceset = self->parent.ts;
4016
4017 guint i, j, nb_trace, nb_tracefile;
4018
4019 LttvTraceState *ts;
4020
4021 LttvTracefileState *tfs;
4022
4023 LttvTraceHook hook_start, hook_end;
4024
4025 nb_trace = lttv_traceset_number(traceset);
4026 for(i = 0 ; i < nb_trace ; i++) {
4027 ts = (LttvTraceState *)self->parent.traces[i];
4028
4029 lttv_trace_find_hook(ts->parent.t, "core","block_start",NULL,
4030 NULL, NULL, block_start, &hook_start);
4031 lttv_trace_find_hook(ts->parent.t, "core","block_end",NULL,
4032 NULL, NULL, block_end, &hook_end);
4033
4034 nb_tracefile = ts->parent.tracefiles->len;
4035
4036 for(j = 0 ; j < nb_tracefile ; j++) {
4037 tfs =
4038 LTTV_TRACEFILE_STATE(&g_array_index(ts->parent.tracefiles,
4039 LttvTracefileContext, j));
4040 lttv_hooks_add(lttv_hooks_by_id_find(tfs->parent.event_by_id,
4041 hook_start.id), hook_start.h, NULL, LTTV_PRIO_STATE);
4042 lttv_hooks_add(lttv_hooks_by_id_find(tfs->parent.event_by_id,
4043 hook_end.id), hook_end.h, NULL, LTTV_PRIO_STATE);
4044 }
4045 }
4046 }
4047 #endif //0
4048
4049 void lttv_state_save_add_event_hooks(LttvTracesetState *self)
4050 {
4051 LttvTraceset *traceset = self->parent.ts;
4052
4053 guint i, j, nb_trace, nb_tracefile;
4054
4055 LttvTraceState *ts;
4056
4057 LttvTracefileState *tfs;
4058
4059
4060 nb_trace = lttv_traceset_number(traceset);
4061 for(i = 0 ; i < nb_trace ; i++) {
4062
4063 ts = (LttvTraceState *)self->parent.traces[i];
4064 nb_tracefile = ts->parent.tracefiles->len;
4065
4066 if(ts->has_precomputed_states) continue;
4067
4068 guint *event_count = g_new(guint, 1);
4069 *event_count = 0;
4070
4071 for(j = 0 ; j < nb_tracefile ; j++) {
4072 tfs =
4073 LTTV_TRACEFILE_STATE(g_array_index(ts->parent.tracefiles,
4074 LttvTracefileContext*, j));
4075 lttv_hooks_add(tfs->parent.event,
4076 state_save_event_hook,
4077 event_count,
4078 LTTV_PRIO_STATE);
4079
4080 }
4081 }
4082
4083 lttv_process_traceset_begin(&self->parent,
4084 NULL, NULL, NULL, NULL, NULL);
4085
4086 }
4087
4088 gint lttv_state_save_hook_add_event_hooks(void *hook_data, void *call_data)
4089 {
4090 LttvTracesetState *tss = (LttvTracesetState*)(call_data);
4091
4092 lttv_state_save_add_event_hooks(tss);
4093
4094 return 0;
4095 }
4096
4097
4098 #if 0
4099 void lttv_state_save_remove_event_hooks(LttvTracesetState *self)
4100 {
4101 LttvTraceset *traceset = self->parent.ts;
4102
4103 guint i, j, nb_trace, nb_tracefile;
4104
4105 LttvTraceState *ts;
4106
4107 LttvTracefileState *tfs;
4108
4109 LttvTraceHook hook_start, hook_end;
4110
4111 nb_trace = lttv_traceset_number(traceset);
4112 for(i = 0 ; i < nb_trace ; i++) {
4113 ts = LTTV_TRACE_STATE(self->parent.traces[i]);
4114
4115 lttv_trace_find_hook(ts->parent.t, "core","block_start",NULL,
4116 NULL, NULL, block_start, &hook_start);
4117
4118 lttv_trace_find_hook(ts->parent.t, "core","block_end",NULL,
4119 NULL, NULL, block_end, &hook_end);
4120
4121 nb_tracefile = ts->parent.tracefiles->len;
4122
4123 for(j = 0 ; j < nb_tracefile ; j++) {
4124 tfs =
4125 LTTV_TRACEFILE_STATE(&g_array_index(ts->parent.tracefiles,
4126 LttvTracefileContext, j));
4127 lttv_hooks_remove_data(lttv_hooks_by_id_find(
4128 tfs->parent.event_by_id, hook_start.id), hook_start.h, NULL);
4129 lttv_hooks_remove_data(lttv_hooks_by_id_find(
4130 tfs->parent.event_by_id, hook_end.id), hook_end.h, NULL);
4131 }
4132 }
4133 }
4134 #endif //0
4135
4136 void lttv_state_save_remove_event_hooks(LttvTracesetState *self)
4137 {
4138 LttvTraceset *traceset = self->parent.ts;
4139
4140 guint i, j, nb_trace, nb_tracefile;
4141
4142 LttvTraceState *ts;
4143
4144 LttvTracefileState *tfs;
4145
4146 LttvHooks *after_trace = lttv_hooks_new();
4147
4148 lttv_hooks_add(after_trace,
4149 state_save_after_trace_hook,
4150 NULL,
4151 LTTV_PRIO_STATE);
4152
4153
4154 lttv_process_traceset_end(&self->parent,
4155 NULL, after_trace, NULL, NULL, NULL);
4156
4157 lttv_hooks_destroy(after_trace);
4158
4159 nb_trace = lttv_traceset_number(traceset);
4160 for(i = 0 ; i < nb_trace ; i++) {
4161
4162 ts = (LttvTraceState *)self->parent.traces[i];
4163 nb_tracefile = ts->parent.tracefiles->len;
4164
4165 if(ts->has_precomputed_states) continue;
4166
4167 guint *event_count = NULL;
4168
4169 for(j = 0 ; j < nb_tracefile ; j++) {
4170 tfs =
4171 LTTV_TRACEFILE_STATE(g_array_index(ts->parent.tracefiles,
4172 LttvTracefileContext*, j));
4173 event_count = lttv_hooks_remove(tfs->parent.event,
4174 state_save_event_hook);
4175 }
4176 if(event_count) g_free(event_count);
4177 }
4178 }
4179
4180 gint lttv_state_save_hook_remove_event_hooks(void *hook_data, void *call_data)
4181 {
4182 LttvTracesetState *tss = (LttvTracesetState*)(call_data);
4183
4184 lttv_state_save_remove_event_hooks(tss);
4185
4186 return 0;
4187 }
4188
4189 void lttv_state_traceset_seek_time_closest(LttvTracesetState *self, LttTime t)
4190 {
4191 LttvTraceset *traceset = self->parent.ts;
4192
4193 guint i, nb_trace;
4194
4195 int min_pos, mid_pos, max_pos;
4196
4197 guint call_rest = 0;
4198
4199 LttvTraceState *tcs;
4200
4201 LttvAttributeValue value;
4202
4203 LttvAttributeType type;
4204
4205 LttvAttributeName name;
4206
4207 gboolean is_named;
4208
4209 LttvAttribute *saved_states_tree, *saved_state_tree, *closest_tree = NULL;
4210
4211 //g_tree_destroy(self->parent.pqueue);
4212 //self->parent.pqueue = g_tree_new(compare_tracefile);
4213
4214 g_info("Entering seek_time_closest for time %lu.%lu", t.tv_sec, t.tv_nsec);
4215
4216 nb_trace = lttv_traceset_number(traceset);
4217 for(i = 0 ; i < nb_trace ; i++) {
4218 tcs = (LttvTraceState *)self->parent.traces[i];
4219
4220 if(ltt_time_compare(t, *(tcs->max_time_state_recomputed_in_seek)) < 0) {
4221 saved_states_tree = lttv_attribute_find_subdir(tcs->parent.t_a,
4222 LTTV_STATE_SAVED_STATES);
4223 min_pos = -1;
4224
4225 if(saved_states_tree) {
4226 max_pos = lttv_attribute_get_number(saved_states_tree) - 1;
4227 mid_pos = max_pos / 2;
4228 while(min_pos < max_pos) {
4229 type = lttv_attribute_get(saved_states_tree, mid_pos,
4230 &name, &value, &is_named);
4231 g_assert(type == LTTV_GOBJECT);
4232 saved_state_tree = *((LttvAttribute **)(value.v_gobject));
4233 type = lttv_attribute_get_by_name(saved_state_tree,
4234 LTTV_STATE_TIME, &value);
4235 g_assert(type == LTTV_TIME);
4236 if(ltt_time_compare(*(value.v_time), t) < 0) {
4237 min_pos = mid_pos;
4238 closest_tree = saved_state_tree;
4239 }
4240 else max_pos = mid_pos - 1;
4241
4242 mid_pos = (min_pos + max_pos + 1) / 2;
4243 }
4244 }
4245
4246 /* restore the closest earlier saved state */
4247 if(min_pos != -1) {
4248 lttv_state_restore(tcs, closest_tree);
4249 call_rest = 1;
4250 }
4251
4252 /* There is no saved state, yet we want to have it. Restart at T0 */
4253 else {
4254 restore_init_state(tcs);
4255 lttv_process_trace_seek_time(&(tcs->parent), ltt_time_zero);
4256 }
4257 }
4258 /* We want to seek quickly without restoring/updating the state */
4259 else {
4260 restore_init_state(tcs);
4261 lttv_process_trace_seek_time(&(tcs->parent), t);
4262 }
4263 }
4264 if(!call_rest) g_info("NOT Calling restore");
4265 }
4266
4267
4268 static void traceset_state_instance_init (GTypeInstance *instance, gpointer g_class)
4269 {
4270 }
4271
4272
4273 static void traceset_state_finalize (LttvTracesetState *self)
4274 {
4275 G_OBJECT_CLASS(g_type_class_peek(LTTV_TRACESET_CONTEXT_TYPE))->
4276 finalize(G_OBJECT(self));
4277 }
4278
4279
4280 static void traceset_state_class_init (LttvTracesetContextClass *klass)
4281 {
4282 GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
4283
4284 gobject_class->finalize = (void (*)(GObject *self)) traceset_state_finalize;
4285 klass->init = (void (*)(LttvTracesetContext *self, LttvTraceset *ts))init;
4286 klass->fini = (void (*)(LttvTracesetContext *self))fini;
4287 klass->new_traceset_context = new_traceset_context;
4288 klass->new_trace_context = new_trace_context;
4289 klass->new_tracefile_context = new_tracefile_context;
4290 }
4291
4292
4293 GType lttv_traceset_state_get_type(void)
4294 {
4295 static GType type = 0;
4296 if (type == 0) {
4297 static const GTypeInfo info = {
4298 sizeof (LttvTracesetStateClass),
4299 NULL, /* base_init */
4300 NULL, /* base_finalize */
4301 (GClassInitFunc) traceset_state_class_init, /* class_init */
4302 NULL, /* class_finalize */
4303 NULL, /* class_data */
4304 sizeof (LttvTracesetState),
4305 0, /* n_preallocs */
4306 (GInstanceInitFunc) traceset_state_instance_init, /* instance_init */
4307 NULL /* value handling */
4308 };
4309
4310 type = g_type_register_static (LTTV_TRACESET_CONTEXT_TYPE, "LttvTracesetStateType",
4311 &info, 0);
4312 }
4313 return type;
4314 }
4315
4316
4317 static void trace_state_instance_init (GTypeInstance *instance, gpointer g_class)
4318 {
4319 }
4320
4321
4322 static void trace_state_finalize (LttvTraceState *self)
4323 {
4324 G_OBJECT_CLASS(g_type_class_peek(LTTV_TRACE_CONTEXT_TYPE))->
4325 finalize(G_OBJECT(self));
4326 }
4327
4328
4329 static void trace_state_class_init (LttvTraceStateClass *klass)
4330 {
4331 GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
4332
4333 gobject_class->finalize = (void (*)(GObject *self)) trace_state_finalize;
4334 klass->state_save = state_save;
4335 klass->state_restore = state_restore;
4336 klass->state_saved_free = state_saved_free;
4337 }
4338
4339
4340 GType lttv_trace_state_get_type(void)
4341 {
4342 static GType type = 0;
4343 if (type == 0) {
4344 static const GTypeInfo info = {
4345 sizeof (LttvTraceStateClass),
4346 NULL, /* base_init */
4347 NULL, /* base_finalize */
4348 (GClassInitFunc) trace_state_class_init, /* class_init */
4349 NULL, /* class_finalize */
4350 NULL, /* class_data */
4351 sizeof (LttvTraceState),
4352 0, /* n_preallocs */
4353 (GInstanceInitFunc) trace_state_instance_init, /* instance_init */
4354 NULL /* value handling */
4355 };
4356
4357 type = g_type_register_static (LTTV_TRACE_CONTEXT_TYPE,
4358 "LttvTraceStateType", &info, 0);
4359 }
4360 return type;
4361 }
4362
4363
4364 static void tracefile_state_instance_init (GTypeInstance *instance,
4365 gpointer g_class)
4366 {
4367 }
4368
4369
4370 static void tracefile_state_finalize (LttvTracefileState *self)
4371 {
4372 G_OBJECT_CLASS(g_type_class_peek(LTTV_TRACEFILE_CONTEXT_TYPE))->
4373 finalize(G_OBJECT(self));
4374 }
4375
4376
4377 static void tracefile_state_class_init (LttvTracefileStateClass *klass)
4378 {
4379 GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
4380
4381 gobject_class->finalize = (void (*)(GObject *self)) tracefile_state_finalize;
4382 }
4383
4384
4385 GType lttv_tracefile_state_get_type(void)
4386 {
4387 static GType type = 0;
4388 if (type == 0) {
4389 static const GTypeInfo info = {
4390 sizeof (LttvTracefileStateClass),
4391 NULL, /* base_init */
4392 NULL, /* base_finalize */
4393 (GClassInitFunc) tracefile_state_class_init, /* class_init */
4394 NULL, /* class_finalize */
4395 NULL, /* class_data */
4396 sizeof (LttvTracefileState),
4397 0, /* n_preallocs */
4398 (GInstanceInitFunc) tracefile_state_instance_init, /* instance_init */
4399 NULL /* value handling */
4400 };
4401
4402 type = g_type_register_static (LTTV_TRACEFILE_CONTEXT_TYPE,
4403 "LttvTracefileStateType", &info, 0);
4404 }
4405 return type;
4406 }
4407
4408
4409 static void module_init()
4410 {
4411 LTTV_STATE_UNNAMED = g_quark_from_string("");
4412 LTTV_STATE_UNBRANDED = g_quark_from_string("");
4413 LTTV_STATE_MODE_UNKNOWN = g_quark_from_string("MODE_UNKNOWN");
4414 LTTV_STATE_USER_MODE = g_quark_from_string("USER_MODE");
4415 LTTV_STATE_MAYBE_USER_MODE = g_quark_from_string("MAYBE_USER_MODE");
4416 LTTV_STATE_SYSCALL = g_quark_from_string("SYSCALL");
4417 LTTV_STATE_MAYBE_SYSCALL = g_quark_from_string("MAYBE_SYSCALL");
4418 LTTV_STATE_TRAP = g_quark_from_string("TRAP");
4419 LTTV_STATE_MAYBE_TRAP = g_quark_from_string("MAYBE_TRAP");
4420 LTTV_STATE_IRQ = g_quark_from_string("IRQ");
4421 LTTV_STATE_SOFT_IRQ = g_quark_from_string("SOFTIRQ");
4422 LTTV_STATE_SUBMODE_UNKNOWN = g_quark_from_string("UNKNOWN");
4423 LTTV_STATE_SUBMODE_NONE = g_quark_from_string("NONE");
4424 LTTV_STATE_WAIT_FORK = g_quark_from_string("WAIT_FORK");
4425 LTTV_STATE_WAIT_CPU = g_quark_from_string("WAIT_CPU");
4426 LTTV_STATE_EXIT = g_quark_from_string("EXIT");
4427 LTTV_STATE_ZOMBIE = g_quark_from_string("ZOMBIE");
4428 LTTV_STATE_WAIT = g_quark_from_string("WAIT");
4429 LTTV_STATE_RUN = g_quark_from_string("RUN");
4430 LTTV_STATE_DEAD = g_quark_from_string("DEAD");
4431 LTTV_STATE_USER_THREAD = g_quark_from_string("USER_THREAD");
4432 LTTV_STATE_KERNEL_THREAD = g_quark_from_string("KERNEL_THREAD");
4433 LTTV_STATE_TRACEFILES = g_quark_from_string("tracefiles");
4434 LTTV_STATE_PROCESSES = g_quark_from_string("processes");
4435 LTTV_STATE_PROCESS = g_quark_from_string("process");
4436 LTTV_STATE_RUNNING_PROCESS = g_quark_from_string("running_process");
4437 LTTV_STATE_EVENT = g_quark_from_string("event");
4438 LTTV_STATE_SAVED_STATES = g_quark_from_string("saved states");
4439 LTTV_STATE_SAVED_STATES_TIME = g_quark_from_string("saved states time");
4440 LTTV_STATE_TIME = g_quark_from_string("time");
4441 LTTV_STATE_HOOKS = g_quark_from_string("saved state hooks");
4442 LTTV_STATE_NAME_TABLES = g_quark_from_string("name tables");
4443 LTTV_STATE_TRACE_STATE_USE_COUNT =
4444 g_quark_from_string("trace_state_use_count");
4445 LTTV_STATE_RESOURCE_CPUS = g_quark_from_string("cpu resource states");
4446 LTTV_STATE_RESOURCE_CPUS = g_quark_from_string("cpu count");
4447 LTTV_STATE_RESOURCE_IRQS = g_quark_from_string("irq resource states");
4448 LTTV_STATE_RESOURCE_SOFT_IRQS = g_quark_from_string("soft irq resource states");
4449 LTTV_STATE_RESOURCE_TRAPS = g_quark_from_string("trap resource states");
4450 LTTV_STATE_RESOURCE_BLKDEVS = g_quark_from_string("blkdevs resource states");
4451
4452 LTT_CHANNEL_FD_STATE = g_quark_from_string("fd_state");
4453 LTT_CHANNEL_GLOBAL_STATE = g_quark_from_string("global_state");
4454 LTT_CHANNEL_IRQ_STATE = g_quark_from_string("irq_state");
4455 LTT_CHANNEL_MODULE_STATE = g_quark_from_string("module_state");
4456 LTT_CHANNEL_NETIF_STATE = g_quark_from_string("netif_state");
4457 LTT_CHANNEL_SOFTIRQ_STATE = g_quark_from_string("softirq_state");
4458 LTT_CHANNEL_SWAP_STATE = g_quark_from_string("swap_state");
4459 LTT_CHANNEL_SYSCALL_STATE = g_quark_from_string("syscall_state");
4460 LTT_CHANNEL_TASK_STATE = g_quark_from_string("task_state");
4461 LTT_CHANNEL_VM_STATE = g_quark_from_string("vm_state");
4462 LTT_CHANNEL_KPROBE_STATE = g_quark_from_string("kprobe_state");
4463 LTT_CHANNEL_FS = g_quark_from_string("fs");
4464 LTT_CHANNEL_KERNEL = g_quark_from_string("kernel");
4465 LTT_CHANNEL_MM = g_quark_from_string("mm");
4466 LTT_CHANNEL_USERSPACE = g_quark_from_string("userspace");
4467 LTT_CHANNEL_BLOCK = g_quark_from_string("block");
4468
4469 LTT_EVENT_SYSCALL_ENTRY = g_quark_from_string("syscall_entry");
4470 LTT_EVENT_SYSCALL_EXIT = g_quark_from_string("syscall_exit");
4471 LTT_EVENT_TRAP_ENTRY = g_quark_from_string("trap_entry");
4472 LTT_EVENT_TRAP_EXIT = g_quark_from_string("trap_exit");
4473 LTT_EVENT_PAGE_FAULT_ENTRY = g_quark_from_string("page_fault_entry");
4474 LTT_EVENT_PAGE_FAULT_EXIT = g_quark_from_string("page_fault_exit");
4475 LTT_EVENT_PAGE_FAULT_NOSEM_ENTRY = g_quark_from_string("page_fault_nosem_entry");
4476 LTT_EVENT_PAGE_FAULT_NOSEM_EXIT = g_quark_from_string("page_fault_nosem_exit");
4477 LTT_EVENT_IRQ_ENTRY = g_quark_from_string("irq_entry");
4478 LTT_EVENT_IRQ_EXIT = g_quark_from_string("irq_exit");
4479 LTT_EVENT_SOFT_IRQ_RAISE = g_quark_from_string("softirq_raise");
4480 LTT_EVENT_SOFT_IRQ_ENTRY = g_quark_from_string("softirq_entry");
4481 LTT_EVENT_SOFT_IRQ_EXIT = g_quark_from_string("softirq_exit");
4482 LTT_EVENT_SCHED_SCHEDULE = g_quark_from_string("sched_schedule");
4483 LTT_EVENT_SCHED_TRY_WAKEUP = g_quark_from_string("sched_try_wakeup");
4484 LTT_EVENT_PROCESS_FORK = g_quark_from_string("process_fork");
4485 LTT_EVENT_KTHREAD_CREATE = g_quark_from_string("kthread_create");
4486 LTT_EVENT_PROCESS_EXIT = g_quark_from_string("process_exit");
4487 LTT_EVENT_PROCESS_FREE = g_quark_from_string("process_free");
4488 LTT_EVENT_EXEC = g_quark_from_string("exec");
4489 LTT_EVENT_PROCESS_STATE = g_quark_from_string("process_state");
4490 LTT_EVENT_STATEDUMP_END = g_quark_from_string("statedump_end");
4491 LTT_EVENT_FUNCTION_ENTRY = g_quark_from_string("function_entry");
4492 LTT_EVENT_FUNCTION_EXIT = g_quark_from_string("function_exit");
4493 LTT_EVENT_THREAD_BRAND = g_quark_from_string("thread_brand");
4494 LTT_EVENT_REQUEST_ISSUE = g_quark_from_string("_blk_request_issue");
4495 LTT_EVENT_REQUEST_COMPLETE = g_quark_from_string("_blk_request_complete");
4496 LTT_EVENT_LIST_INTERRUPT = g_quark_from_string("interrupt");
4497 LTT_EVENT_SYS_CALL_TABLE = g_quark_from_string("sys_call_table");
4498 LTT_EVENT_SOFTIRQ_VEC = g_quark_from_string("softirq_vec");
4499 LTT_EVENT_KPROBE_TABLE = g_quark_from_string("kprobe_table");
4500 LTT_EVENT_KPROBE = g_quark_from_string("kprobe");
4501 LTT_EVENT_OPEN = g_quark_from_string("open");
4502 LTT_EVENT_READ = g_quark_from_string("read");
4503 LTT_EVENT_POLL_EVENT = g_quark_from_string("poll_event");
4504
4505 LTT_FIELD_SYSCALL_ID = g_quark_from_string("syscall_id");
4506 LTT_FIELD_TRAP_ID = g_quark_from_string("trap_id");
4507 LTT_FIELD_IRQ_ID = g_quark_from_string("irq_id");
4508 LTT_FIELD_SOFT_IRQ_ID = g_quark_from_string("softirq_id");
4509 LTT_FIELD_PREV_PID = g_quark_from_string("prev_pid");
4510 LTT_FIELD_NEXT_PID = g_quark_from_string("next_pid");
4511 LTT_FIELD_PREV_STATE = g_quark_from_string("prev_state");
4512 LTT_FIELD_PARENT_PID = g_quark_from_string("parent_pid");
4513 LTT_FIELD_CHILD_PID = g_quark_from_string("child_pid");
4514 LTT_FIELD_PID = g_quark_from_string("pid");
4515 LTT_FIELD_TGID = g_quark_from_string("tgid");
4516 LTT_FIELD_CHILD_TGID = g_quark_from_string("child_tgid");
4517 LTT_FIELD_FILENAME = g_quark_from_string("filename");
4518 LTT_FIELD_NAME = g_quark_from_string("name");
4519 LTT_FIELD_TYPE = g_quark_from_string("type");
4520 LTT_FIELD_MODE = g_quark_from_string("mode");
4521 LTT_FIELD_SUBMODE = g_quark_from_string("submode");
4522 LTT_FIELD_STATUS = g_quark_from_string("status");
4523 LTT_FIELD_THIS_FN = g_quark_from_string("this_fn");
4524 LTT_FIELD_CALL_SITE = g_quark_from_string("call_site");
4525 LTT_FIELD_MAJOR = g_quark_from_string("major");
4526 LTT_FIELD_MINOR = g_quark_from_string("minor");
4527 LTT_FIELD_OPERATION = g_quark_from_string("direction");
4528 LTT_FIELD_ACTION = g_quark_from_string("action");
4529 LTT_FIELD_ID = g_quark_from_string("id");
4530 LTT_FIELD_ADDRESS = g_quark_from_string("address");
4531 LTT_FIELD_SYMBOL = g_quark_from_string("symbol");
4532 LTT_FIELD_IP = g_quark_from_string("ip");
4533 LTT_FIELD_FD = g_quark_from_string("fd");
4534 LTT_FIELD_STATE = g_quark_from_string("state");
4535 LTT_FIELD_CPU_ID = g_quark_from_string("cpu_id");
4536
4537 LTTV_CPU_UNKNOWN = g_quark_from_string("unknown");
4538 LTTV_CPU_IDLE = g_quark_from_string("idle");
4539 LTTV_CPU_BUSY = g_quark_from_string("busy");
4540 LTTV_CPU_IRQ = g_quark_from_string("irq");
4541 LTTV_CPU_SOFT_IRQ = g_quark_from_string("softirq");
4542 LTTV_CPU_TRAP = g_quark_from_string("trap");
4543
4544 LTTV_IRQ_UNKNOWN = g_quark_from_string("unknown");
4545 LTTV_IRQ_IDLE = g_quark_from_string("idle");
4546 LTTV_IRQ_BUSY = g_quark_from_string("busy");
4547
4548 LTTV_BDEV_UNKNOWN = g_quark_from_string("unknown");
4549 LTTV_BDEV_IDLE = g_quark_from_string("idle");
4550 LTTV_BDEV_BUSY_READING = g_quark_from_string("busy_reading");
4551 LTTV_BDEV_BUSY_WRITING = g_quark_from_string("busy_writing");
4552 }
4553
4554 static void module_destroy()
4555 {
4556 }
4557
4558
4559 LTTV_MODULE("state", "State computation", \
4560 "Update the system state, possibly saving it at intervals", \
4561 module_init, module_destroy)
4562
4563
4564
LTTng 2.x Viewer (LTTV)
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