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state.c coding style fix
[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_SYSCALL,
147 LTTV_STATE_TRAP,
148 LTTV_STATE_IRQ,
149 LTTV_STATE_SOFT_IRQ;
150
151 LttvExecutionSubmode
152 LTTV_STATE_SUBMODE_UNKNOWN,
153 LTTV_STATE_SUBMODE_NONE;
154
155 LttvProcessStatus
156 LTTV_STATE_UNNAMED,
157 LTTV_STATE_WAIT_FORK,
158 LTTV_STATE_WAIT_CPU,
159 LTTV_STATE_EXIT,
160 LTTV_STATE_ZOMBIE,
161 LTTV_STATE_WAIT,
162 LTTV_STATE_RUN,
163 LTTV_STATE_DEAD;
164
165 GQuark
166 LTTV_STATE_UNBRANDED;
167
168 LttvProcessType
169 LTTV_STATE_USER_THREAD,
170 LTTV_STATE_KERNEL_THREAD;
171
172 LttvCPUMode
173 LTTV_CPU_UNKNOWN,
174 LTTV_CPU_IDLE,
175 LTTV_CPU_BUSY,
176 LTTV_CPU_IRQ,
177 LTTV_CPU_SOFT_IRQ,
178 LTTV_CPU_TRAP;
179
180 LttvIRQMode
181 LTTV_IRQ_UNKNOWN,
182 LTTV_IRQ_IDLE,
183 LTTV_IRQ_BUSY;
184
185 LttvBdevMode
186 LTTV_BDEV_UNKNOWN,
187 LTTV_BDEV_IDLE,
188 LTTV_BDEV_BUSY_READING,
189 LTTV_BDEV_BUSY_WRITING;
190
191 static GQuark
192 LTTV_STATE_TRACEFILES,
193 LTTV_STATE_PROCESSES,
194 LTTV_STATE_PROCESS,
195 LTTV_STATE_RUNNING_PROCESS,
196 LTTV_STATE_EVENT,
197 LTTV_STATE_SAVED_STATES,
198 LTTV_STATE_SAVED_STATES_TIME,
199 LTTV_STATE_TIME,
200 LTTV_STATE_HOOKS,
201 LTTV_STATE_NAME_TABLES,
202 LTTV_STATE_TRACE_STATE_USE_COUNT,
203 LTTV_STATE_RESOURCE_CPUS,
204 LTTV_STATE_RESOURCE_CPUS_COUNT,
205 LTTV_STATE_RESOURCE_IRQS,
206 LTTV_STATE_RESOURCE_SOFT_IRQS,
207 LTTV_STATE_RESOURCE_TRAPS,
208 LTTV_STATE_RESOURCE_BLKDEVS;
209
210 static void create_max_time(LttvTraceState *tcs);
211
212 static void get_max_time(LttvTraceState *tcs);
213
214 static void free_max_time(LttvTraceState *tcs);
215
216 static void create_name_tables(LttvTraceState *tcs);
217
218 static void get_name_tables(LttvTraceState *tcs);
219
220 static void free_name_tables(LttvTraceState *tcs);
221
222 static void free_saved_state(LttvTraceState *tcs);
223
224 static void lttv_state_free_process_table(GHashTable *processes);
225
226 static void lttv_trace_states_read_raw(LttvTraceState *tcs, FILE *fp,
227 GPtrArray *quarktable);
228
229 /* Resource function prototypes */
230 static LttvBdevState *get_hashed_bdevstate(LttvTraceState *ts, guint16 devcode);
231 static LttvBdevState *bdevstate_new(void);
232 static void bdevstate_free(LttvBdevState *);
233 static void bdevstate_free_cb(gpointer key, gpointer value, gpointer user_data);
234 static LttvBdevState *bdevstate_copy(LttvBdevState *bds);
235
236
237 #if (__WORDSIZE == 32)
238 guint guint64_hash(gconstpointer key)
239 {
240 guint64 ukey = *(const guint64 *)key;
241
242 return (guint)ukey ^ (guint)(ukey >> 32);
243 }
244
245 gboolean guint64_equal(gconstpointer a, gconstpointer b)
246 {
247 guint64 ua = *(const guint64 *)a;
248 guint64 ub = *(const guint64 *)b;
249
250 return ua == ub;
251 }
252 #endif
253
254 void lttv_state_save(LttvTraceState *self, LttvAttribute *container)
255 {
256 LTTV_TRACE_STATE_GET_CLASS(self)->state_save(self, container);
257 }
258
259
260 void lttv_state_restore(LttvTraceState *self, LttvAttribute *container)
261 {
262 LTTV_TRACE_STATE_GET_CLASS(self)->state_restore(self, container);
263 }
264
265
266 void lttv_state_state_saved_free(LttvTraceState *self,
267 LttvAttribute *container)
268 {
269 LTTV_TRACE_STATE_GET_CLASS(self)->state_saved_free(self, container);
270 }
271
272
273 guint process_hash(gconstpointer key)
274 {
275 guint pid = ((const LttvProcessState *)key)->pid;
276 return (pid>>8 ^ pid>>4 ^ pid>>2 ^ pid) ;
277 }
278
279
280 /* If the hash table hash function is well distributed,
281 * the process_equal should compare different pid */
282 gboolean process_equal(gconstpointer a, gconstpointer b)
283 {
284 const LttvProcessState *process_a, *process_b;
285 gboolean ret = TRUE;
286
287 process_a = (const LttvProcessState *)a;
288 process_b = (const LttvProcessState *)b;
289
290 if(likely(process_a->pid != process_b->pid)) ret = FALSE;
291 else if(likely(process_a->pid == 0 &&
292 process_a->cpu != process_b->cpu)) ret = FALSE;
293
294 return ret;
295 }
296
297 static void delete_usertrace(gpointer key, gpointer value, gpointer user_data)
298 {
299 g_tree_destroy((GTree*)value);
300 }
301
302 static void lttv_state_free_usertraces(GHashTable *usertraces)
303 {
304 g_hash_table_foreach(usertraces, delete_usertrace, NULL);
305 g_hash_table_destroy(usertraces);
306 }
307
308 gboolean rettrue(gpointer key, gpointer value, gpointer user_data)
309 {
310 return TRUE;
311 }
312
313 static guint check_expand(nb, id)
314 {
315 if(likely(nb > id))
316 return nb;
317 else
318 return max(id + 1, nb * 2);
319 }
320
321 static void expand_name_table(LttvTraceState *ts, GQuark **table,
322 guint nb, guint new_nb)
323 {
324 /* Expand an incomplete table */
325 GQuark *old_table = *table;
326 *table = g_new(GQuark, new_nb);
327 memcpy(*table, old_table, nb * sizeof(GQuark));
328 g_free(old_table);
329 }
330
331 static void fill_name_table(LttvTraceState *ts, GQuark *table, guint nb,
332 guint new_nb, const char *def_string)
333 {
334 guint i;
335 GString *fe_name = g_string_new("");
336 for(i = nb; i < new_nb; i++) {
337 g_string_printf(fe_name, "%s %d", def_string, i);
338 table[i] = g_quark_from_string(fe_name->str);
339 }
340 g_string_free(fe_name, TRUE);
341 }
342
343 static void expand_syscall_table(LttvTraceState *ts, int id)
344 {
345 LttvNameTables *nt = ts->name_tables;
346 guint new_nb;
347
348 new_nb = check_expand(nt->nb_syscalls, id);
349 if(likely(new_nb == nt->nb_syscalls))
350 return;
351 expand_name_table(ts, &nt->syscall_names, nt->nb_syscalls, new_nb);
352 fill_name_table(ts, nt->syscall_names, nt->nb_syscalls, new_nb, "syscall");
353 /* Update the table size */
354 nt->nb_syscalls = new_nb;
355 }
356
357 static void expand_kprobe_table(LttvTraceState *ts, guint64 ip, char *symbol)
358 {
359 LttvNameTables *nt = ts->name_tables;
360 #if (__WORDSIZE == 32)
361 guint64 *ip_ptr = g_new(guint64, 1);
362 g_hash_table_insert(nt->kprobe_hash, ip_ptr,
363 (gpointer)(glong)g_quark_from_string(symbol));
364 #else
365 g_hash_table_insert(nt->kprobe_hash, (gpointer)ip,
366 (gpointer)(glong)g_quark_from_string(symbol));
367 #endif
368 }
369
370 static void expand_trap_table(LttvTraceState *ts, int id)
371 {
372 LttvNameTables *nt = ts->name_tables;
373 LttvTrapState *old_table;
374 guint new_nb, i;
375
376 new_nb = check_expand(nt->nb_traps, id);
377 if(likely(new_nb == nt->nb_traps))
378 return;
379
380 expand_name_table(ts, &nt->trap_names, nt->nb_traps, new_nb);
381 fill_name_table(ts, nt->trap_names, nt->nb_traps, new_nb, "trap");
382
383 old_table = ts->trap_states;
384 ts->trap_states = g_new(LttvTrapState, new_nb);
385 memcpy(ts->trap_states, old_table, nt->nb_traps * sizeof(LttvTrapState));
386 g_free(old_table);
387 for(i = nt->nb_traps; i < new_nb; i++)
388 ts->trap_states[i].running = 0;
389
390 /* Update the table size */
391 nt->nb_traps = new_nb;
392 }
393
394 static void expand_irq_table(LttvTraceState *ts, int id)
395 {
396 LttvNameTables *nt = ts->name_tables;
397 LttvIRQState *old_table;
398 guint new_nb, i;
399
400 new_nb = check_expand(nt->nb_irqs, id);
401 if(likely(new_nb == nt->nb_irqs))
402 return;
403
404 expand_name_table(ts, &nt->irq_names, nt->nb_irqs, new_nb);
405 fill_name_table(ts, nt->irq_names, nt->nb_irqs, new_nb, "irq");
406
407 old_table = ts->irq_states;
408 ts->irq_states = g_new(LttvIRQState, new_nb);
409 memcpy(ts->irq_states, old_table, nt->nb_irqs * sizeof(LttvIRQState));
410 g_free(old_table);
411 for(i = nt->nb_irqs; i < new_nb; i++)
412 ts->irq_states[i].mode_stack =
413 g_array_new(FALSE, FALSE, sizeof(LttvIRQMode));
414
415 /* Update the table size */
416 nt->nb_irqs = new_nb;
417 }
418
419 static void expand_soft_irq_table(LttvTraceState *ts, int id)
420 {
421 LttvNameTables *nt = ts->name_tables;
422 LttvSoftIRQState *old_table;
423 guint new_nb, i;
424
425 new_nb = check_expand(nt->nb_soft_irqs, id);
426 if(likely(new_nb == nt->nb_soft_irqs))
427 return;
428
429 expand_name_table(ts, &nt->soft_irq_names, nt->nb_soft_irqs, new_nb);
430 fill_name_table(ts, nt->soft_irq_names, nt->nb_soft_irqs, new_nb, "softirq");
431
432 old_table = ts->soft_irq_states;
433 ts->soft_irq_states = g_new(LttvSoftIRQState, new_nb);
434 memcpy(ts->soft_irq_states, old_table,
435 nt->nb_soft_irqs * sizeof(LttvSoftIRQState));
436 g_free(old_table);
437 for(i = nt->nb_soft_irqs; i < new_nb; i++)
438 ts->soft_irq_states[i].running = 0;
439
440 /* Update the table size */
441 nt->nb_soft_irqs = new_nb;
442 }
443
444 static void
445 restore_init_state(LttvTraceState *self)
446 {
447 guint i, nb_cpus, nb_irqs, nb_soft_irqs, nb_traps;
448
449 //LttvTracefileState *tfcs;
450
451 LttTime start_time, end_time;
452
453 /* Free the process tables */
454 if(self->processes != NULL) lttv_state_free_process_table(self->processes);
455 if(self->usertraces != NULL) lttv_state_free_usertraces(self->usertraces);
456 self->processes = g_hash_table_new(process_hash, process_equal);
457 self->usertraces = g_hash_table_new(g_direct_hash, g_direct_equal);
458 self->nb_event = 0;
459
460 /* Seek time to beginning */
461 // Mathieu : fix : don't seek traceset here : causes inconsistency in seek
462 // closest. It's the tracecontext job to seek the trace to the beginning
463 // anyway : the init state might be used at the middle of the trace as well...
464 //g_tree_destroy(self->parent.ts_context->pqueue);
465 //self->parent.ts_context->pqueue = g_tree_new(compare_tracefile);
466
467 ltt_trace_time_span_get(self->parent.t, &start_time, &end_time);
468
469 //lttv_process_trace_seek_time(&self->parent, ltt_time_zero);
470
471 nb_cpus = ltt_trace_get_num_cpu(self->parent.t);
472 nb_irqs = self->name_tables->nb_irqs;
473 nb_soft_irqs = self->name_tables->nb_soft_irqs;
474 nb_traps = self->name_tables->nb_traps;
475
476 /* Put the per cpu running_process to beginning state : process 0. */
477 for(i=0; i< nb_cpus; i++) {
478 LttvExecutionState *es;
479 self->running_process[i] = lttv_state_create_process(self, NULL, i, 0, 0,
480 LTTV_STATE_UNNAMED, &start_time);
481 /* We are not sure is it's a kernel thread or normal thread, put the
482 * bottom stack state to unknown */
483 self->running_process[i]->execution_stack =
484 g_array_set_size(self->running_process[i]->execution_stack, 1);
485 es = self->running_process[i]->state =
486 &g_array_index(self->running_process[i]->execution_stack,
487 LttvExecutionState, 0);
488 es->t = LTTV_STATE_MODE_UNKNOWN;
489 es->s = LTTV_STATE_UNNAMED;
490
491 //self->running_process[i]->state->s = LTTV_STATE_RUN;
492 self->running_process[i]->cpu = i;
493
494 /* reset cpu states */
495 if(self->cpu_states[i].mode_stack->len > 0) {
496 g_array_remove_range(self->cpu_states[i].mode_stack, 0, self->cpu_states[i].mode_stack->len);
497 if(self->cpu_states[i].irq_stack->len)
498 g_array_remove_range(self->cpu_states[i].irq_stack, 0, self->cpu_states[i].irq_stack->len);
499 if(self->cpu_states[i].softirq_stack->len)
500 g_array_remove_range(self->cpu_states[i].softirq_stack, 0, self->cpu_states[i].softirq_stack->len);
501 if(self->cpu_states[i].trap_stack->len)
502 g_array_remove_range(self->cpu_states[i].trap_stack, 0, self->cpu_states[i].trap_stack->len);
503 }
504 }
505
506 /* reset irq states */
507 for(i=0; i<nb_irqs; i++) {
508 if(self->irq_states[i].mode_stack->len > 0)
509 g_array_remove_range(self->irq_states[i].mode_stack, 0, self->irq_states[i].mode_stack->len);
510 }
511
512 /* reset softirq states */
513 for(i=0; i<nb_soft_irqs; i++) {
514 self->soft_irq_states[i].pending = 0;
515 self->soft_irq_states[i].running = 0;
516 }
517
518 /* reset trap states */
519 for(i=0; i<nb_traps; i++) {
520 self->trap_states[i].running = 0;
521 }
522
523 /* reset bdev states */
524 g_hash_table_foreach(self->bdev_states, bdevstate_free_cb, NULL);
525 //g_hash_table_steal_all(self->bdev_states);
526 g_hash_table_foreach_steal(self->bdev_states, rettrue, NULL);
527
528 #if 0
529 nb_tracefile = self->parent.tracefiles->len;
530
531 for(i = 0 ; i < nb_tracefile ; i++) {
532 tfcs =
533 LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
534 LttvTracefileContext*, i));
535 ltt_trace_time_span_get(self->parent.t, &tfcs->parent.timestamp, NULL);
536 // tfcs->saved_position = 0;
537 tfcs->process = lttv_state_create_process(tfcs, NULL,0);
538 tfcs->process->state->s = LTTV_STATE_RUN;
539 tfcs->process->last_cpu = tfcs->cpu_name;
540 tfcs->process->last_cpu_index = ltt_tracefile_num(((LttvTracefileContext*)tfcs)->tf);
541 }
542 #endif //0
543 }
544
545 //static LttTime time_zero = {0,0};
546
547 static gint compare_usertraces(gconstpointer a, gconstpointer b,
548 gpointer user_data)
549 {
550 const LttTime *t1 = (const LttTime *)a;
551 const LttTime *t2 = (const LttTime *)b;
552
553 return ltt_time_compare(*t1, *t2);
554 }
555
556 static void free_usertrace_key(gpointer data)
557 {
558 g_free(data);
559 }
560
561 #define MAX_STRING_LEN 4096
562
563 static void
564 state_load_saved_states(LttvTraceState *tcs)
565 {
566 FILE *fp;
567 GPtrArray *quarktable;
568 const char *trace_path;
569 char path[PATH_MAX];
570 guint count;
571 guint i;
572 tcs->has_precomputed_states = FALSE;
573 GQuark q;
574 gchar *string;
575 gint hdr;
576 gchar buf[MAX_STRING_LEN];
577 guint len;
578
579 trace_path = g_quark_to_string(ltt_trace_name(tcs->parent.t));
580 strncpy(path, trace_path, PATH_MAX-1);
581 count = strnlen(trace_path, PATH_MAX-1);
582 // quarktable : open, test
583 strncat(path, "/precomputed/quarktable", PATH_MAX-count-1);
584 fp = fopen(path, "r");
585 if(!fp) return;
586 quarktable = g_ptr_array_sized_new(4096);
587
588 /* Index 0 is null */
589 hdr = fgetc(fp);
590 if(hdr == EOF) return;
591 g_assert(hdr == HDR_QUARKS);
592 q = 1;
593 do {
594 hdr = fgetc(fp);
595 if(hdr == EOF) break;
596 g_assert(hdr == HDR_QUARK);
597 g_ptr_array_set_size(quarktable, q+1);
598 i=0;
599 while(1) {
600 fread(&buf[i], sizeof(gchar), 1, fp);
601 if(buf[i] == '\0' || feof(fp)) break;
602 i++;
603 }
604 len = strnlen(buf, MAX_STRING_LEN-1);
605 g_ptr_array_index (quarktable, q) = g_new(gchar, len+1);
606 strncpy(g_ptr_array_index (quarktable, q), buf, len+1);
607 q++;
608 } while(1);
609
610 fclose(fp);
611
612 // saved_states : open, test
613 strncpy(path, trace_path, PATH_MAX-1);
614 count = strnlen(trace_path, PATH_MAX-1);
615 strncat(path, "/precomputed/states", PATH_MAX-count-1);
616 fp = fopen(path, "r");
617 if(!fp) return;
618
619 hdr = fgetc(fp);
620 if(hdr != HDR_TRACE) goto end;
621
622 lttv_trace_states_read_raw(tcs, fp, quarktable);
623
624 tcs->has_precomputed_states = TRUE;
625
626 end:
627 fclose(fp);
628
629 /* Free the quarktable */
630 for(i=0; i<quarktable->len; i++) {
631 string = g_ptr_array_index (quarktable, i);
632 g_free(string);
633 }
634 g_ptr_array_free(quarktable, TRUE);
635 return;
636 }
637
638 static void
639 init(LttvTracesetState *self, LttvTraceset *ts)
640 {
641 guint i, j, nb_trace, nb_tracefile, nb_cpu;
642 guint64 nb_irq;
643
644 LttvTraceContext *tc;
645
646 LttvTraceState *tcs;
647
648 LttvTracefileState *tfcs;
649
650 LttvAttributeValue v;
651
652 LTTV_TRACESET_CONTEXT_CLASS(g_type_class_peek(LTTV_TRACESET_CONTEXT_TYPE))->
653 init((LttvTracesetContext *)self, ts);
654
655 nb_trace = lttv_traceset_number(ts);
656 for(i = 0 ; i < nb_trace ; i++) {
657 tc = self->parent.traces[i];
658 tcs = LTTV_TRACE_STATE(tc);
659 tcs->save_interval = LTTV_STATE_SAVE_INTERVAL;
660 lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_TRACE_STATE_USE_COUNT,
661 LTTV_UINT, &v);
662 (*v.v_uint)++;
663
664 if(*(v.v_uint) == 1) {
665 create_name_tables(tcs);
666 create_max_time(tcs);
667 }
668 get_name_tables(tcs);
669 get_max_time(tcs);
670
671 nb_tracefile = tc->tracefiles->len;
672 nb_cpu = ltt_trace_get_num_cpu(tc->t);
673 nb_irq = tcs->name_tables->nb_irqs;
674 tcs->processes = NULL;
675 tcs->usertraces = NULL;
676 tcs->running_process = g_new(LttvProcessState*, nb_cpu);
677
678 /* init cpu resource stuff */
679 tcs->cpu_states = g_new(LttvCPUState, nb_cpu);
680 for(j = 0; j<nb_cpu; j++) {
681 tcs->cpu_states[j].mode_stack = g_array_new(FALSE, FALSE, sizeof(LttvCPUMode));
682 tcs->cpu_states[j].irq_stack = g_array_new(FALSE, FALSE, sizeof(gint));
683 tcs->cpu_states[j].softirq_stack = g_array_new(FALSE, FALSE, sizeof(gint));
684 tcs->cpu_states[j].trap_stack = g_array_new(FALSE, FALSE, sizeof(gint));
685 g_assert(tcs->cpu_states[j].mode_stack != NULL);
686 }
687
688 /* init irq resource stuff */
689 tcs->irq_states = g_new(LttvIRQState, nb_irq);
690 for(j = 0; j<nb_irq; j++) {
691 tcs->irq_states[j].mode_stack = g_array_new(FALSE, FALSE, sizeof(LttvIRQMode));
692 g_assert(tcs->irq_states[j].mode_stack != NULL);
693 }
694
695 /* init soft irq stuff */
696 /* the kernel has a statically fixed max of 32 softirqs */
697 tcs->soft_irq_states = g_new(LttvSoftIRQState, tcs->name_tables->nb_soft_irqs);
698
699 /* init trap stuff */
700 tcs->trap_states = g_new(LttvTrapState, tcs->name_tables->nb_traps);
701
702 /* init bdev resource stuff */
703 tcs->bdev_states = g_hash_table_new(g_int_hash, g_int_equal);
704
705 restore_init_state(tcs);
706 for(j = 0 ; j < nb_tracefile ; j++) {
707 tfcs =
708 LTTV_TRACEFILE_STATE(g_array_index(tc->tracefiles,
709 LttvTracefileContext*, j));
710 tfcs->tracefile_name = ltt_tracefile_name(tfcs->parent.tf);
711 tfcs->cpu = ltt_tracefile_cpu(tfcs->parent.tf);
712 tfcs->cpu_state = &(tcs->cpu_states[tfcs->cpu]);
713 if(ltt_tracefile_tid(tfcs->parent.tf) != 0) {
714 /* It's a Usertrace */
715 guint tid = ltt_tracefile_tid(tfcs->parent.tf);
716 GTree *usertrace_tree = (GTree*)g_hash_table_lookup(tcs->usertraces,
717 GUINT_TO_POINTER(tid));
718 if(!usertrace_tree) {
719 usertrace_tree = g_tree_new_full(compare_usertraces,
720 NULL, free_usertrace_key, NULL);
721 g_hash_table_insert(tcs->usertraces,
722 GUINT_TO_POINTER(tid), usertrace_tree);
723 }
724 LttTime *timestamp = g_new(LttTime, 1);
725 *timestamp = ltt_interpolate_time_from_tsc(tfcs->parent.tf,
726 ltt_tracefile_creation(tfcs->parent.tf));
727 g_tree_insert(usertrace_tree, timestamp, tfcs);
728 }
729 }
730
731 /* See if the trace has saved states */
732 state_load_saved_states(tcs);
733 }
734 }
735
736 static void
737 fini(LttvTracesetState *self)
738 {
739 guint i, nb_trace;
740
741 LttvTraceState *tcs;
742
743 //LttvTracefileState *tfcs;
744
745 LttvAttributeValue v;
746
747 nb_trace = lttv_traceset_number(LTTV_TRACESET_CONTEXT(self)->ts);
748 for(i = 0 ; i < nb_trace ; i++) {
749 tcs = (LttvTraceState *)(LTTV_TRACESET_CONTEXT(self)->traces[i]);
750 lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_TRACE_STATE_USE_COUNT,
751 LTTV_UINT, &v);
752
753 g_assert(*(v.v_uint) != 0);
754 (*v.v_uint)--;
755
756 if(*(v.v_uint) == 0) {
757 free_name_tables(tcs);
758 free_max_time(tcs);
759 free_saved_state(tcs);
760 }
761 g_free(tcs->running_process);
762 tcs->running_process = NULL;
763 lttv_state_free_process_table(tcs->processes);
764 lttv_state_free_usertraces(tcs->usertraces);
765 tcs->processes = NULL;
766 tcs->usertraces = NULL;
767 }
768 LTTV_TRACESET_CONTEXT_CLASS(g_type_class_peek(LTTV_TRACESET_CONTEXT_TYPE))->
769 fini((LttvTracesetContext *)self);
770 }
771
772
773 static LttvTracesetContext *
774 new_traceset_context(LttvTracesetContext *self)
775 {
776 return LTTV_TRACESET_CONTEXT(g_object_new(LTTV_TRACESET_STATE_TYPE, NULL));
777 }
778
779
780 static LttvTraceContext *
781 new_trace_context(LttvTracesetContext *self)
782 {
783 return LTTV_TRACE_CONTEXT(g_object_new(LTTV_TRACE_STATE_TYPE, NULL));
784 }
785
786
787 static LttvTracefileContext *
788 new_tracefile_context(LttvTracesetContext *self)
789 {
790 return LTTV_TRACEFILE_CONTEXT(g_object_new(LTTV_TRACEFILE_STATE_TYPE, NULL));
791 }
792
793
794 /* Write the process state of the trace */
795
796 static void write_process_state(gpointer key, gpointer value,
797 gpointer user_data)
798 {
799 LttvProcessState *process;
800
801 LttvExecutionState *es;
802
803 FILE *fp = (FILE *)user_data;
804
805 guint i;
806 guint64 address;
807
808 process = (LttvProcessState *)value;
809 fprintf(fp,
810 " <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",
811 process, process->pid, process->tgid, process->ppid,
812 g_quark_to_string(process->type),
813 process->creation_time.tv_sec,
814 process->creation_time.tv_nsec,
815 process->insertion_time.tv_sec,
816 process->insertion_time.tv_nsec,
817 g_quark_to_string(process->name),
818 g_quark_to_string(process->brand),
819 process->cpu, process->free_events);
820
821 for(i = 0 ; i < process->execution_stack->len; i++) {
822 es = &g_array_index(process->execution_stack, LttvExecutionState, i);
823 fprintf(fp, " <ES MODE=\"%s\" SUBMODE=\"%s\" ENTRY_S=%lu ENTRY_NS=%lu",
824 g_quark_to_string(es->t), g_quark_to_string(es->n),
825 es->entry.tv_sec, es->entry.tv_nsec);
826 fprintf(fp, " CHANGE_S=%lu CHANGE_NS=%lu STATUS=\"%s\"/>\n",
827 es->change.tv_sec, es->change.tv_nsec, g_quark_to_string(es->s));
828 }
829
830 for(i = 0 ; i < process->user_stack->len; i++) {
831 address = g_array_index(process->user_stack, guint64, i);
832 fprintf(fp, " <USER_STACK ADDRESS=\"%" PRIu64 "\"/>\n",
833 address);
834 }
835
836 if(process->usertrace) {
837 fprintf(fp, " <USERTRACE NAME=\"%s\" CPU=%u\n/>",
838 g_quark_to_string(process->usertrace->tracefile_name),
839 process->usertrace->cpu);
840 }
841
842
843 fprintf(fp, " </PROCESS>\n");
844 }
845
846
847 void lttv_state_write(LttvTraceState *self, LttTime t, FILE *fp)
848 {
849 guint i, nb_tracefile, nb_block, offset;
850 guint64 tsc;
851
852 LttvTracefileState *tfcs;
853
854 LttTracefile *tf;
855
856 LttEventPosition *ep;
857
858 guint nb_cpus;
859
860 ep = ltt_event_position_new();
861
862 fprintf(fp,"<PROCESS_STATE TIME_S=%lu TIME_NS=%lu>\n", t.tv_sec, t.tv_nsec);
863
864 g_hash_table_foreach(self->processes, write_process_state, fp);
865
866 nb_cpus = ltt_trace_get_num_cpu(self->parent.t);
867 for(i=0;i<nb_cpus;i++) {
868 fprintf(fp," <CPU NUM=%u RUNNING_PROCESS=%u>\n",
869 i, self->running_process[i]->pid);
870 }
871
872 nb_tracefile = self->parent.tracefiles->len;
873
874 for(i = 0 ; i < nb_tracefile ; i++) {
875 tfcs =
876 LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
877 LttvTracefileContext*, i));
878 fprintf(fp, " <TRACEFILE TIMESTAMP_S=%lu TIMESTAMP_NS=%lu",
879 tfcs->parent.timestamp.tv_sec,
880 tfcs->parent.timestamp.tv_nsec);
881 LttEvent *e = ltt_tracefile_get_event(tfcs->parent.tf);
882 if(e == NULL) fprintf(fp,"/>\n");
883 else {
884 ltt_event_position(e, ep);
885 ltt_event_position_get(ep, &tf, &nb_block, &offset, &tsc);
886 fprintf(fp, " BLOCK=%u OFFSET=%u TSC=%" PRIu64 "/>\n", nb_block, offset,
887 tsc);
888 }
889 }
890 g_free(ep);
891 fprintf(fp,"</PROCESS_STATE>\n");
892 }
893
894
895 static void write_process_state_raw(gpointer key, gpointer value,
896 gpointer user_data)
897 {
898 LttvProcessState *process;
899
900 LttvExecutionState *es;
901
902 FILE *fp = (FILE *)user_data;
903
904 guint i;
905 guint64 address;
906
907 process = (LttvProcessState *)value;
908 fputc(HDR_PROCESS, fp);
909 //fwrite(&header, sizeof(header), 1, fp);
910 //fprintf(fp, "%s", g_quark_to_string(process->type));
911 //fputc('\0', fp);
912 fwrite(&process->type, sizeof(process->type), 1, fp);
913 //fprintf(fp, "%s", g_quark_to_string(process->name));
914 //fputc('\0', fp);
915 fwrite(&process->name, sizeof(process->name), 1, fp);
916 //fprintf(fp, "%s", g_quark_to_string(process->brand));
917 //fputc('\0', fp);
918 fwrite(&process->brand, sizeof(process->brand), 1, fp);
919 fwrite(&process->pid, sizeof(process->pid), 1, fp);
920 fwrite(&process->free_events, sizeof(process->free_events), 1, fp);
921 fwrite(&process->tgid, sizeof(process->tgid), 1, fp);
922 fwrite(&process->ppid, sizeof(process->ppid), 1, fp);
923 fwrite(&process->cpu, sizeof(process->cpu), 1, fp);
924 fwrite(&process->creation_time, sizeof(process->creation_time), 1, fp);
925 fwrite(&process->insertion_time, sizeof(process->insertion_time), 1, fp);
926
927 #if 0
928 fprintf(fp,
929 " <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",
930 process, process->pid, process->tgid, process->ppid,
931 g_quark_to_string(process->type),
932 process->creation_time.tv_sec,
933 process->creation_time.tv_nsec,
934 process->insertion_time.tv_sec,
935 process->insertion_time.tv_nsec,
936 g_quark_to_string(process->name),
937 g_quark_to_string(process->brand),
938 process->cpu);
939 #endif //0
940
941 for(i = 0 ; i < process->execution_stack->len; i++) {
942 es = &g_array_index(process->execution_stack, LttvExecutionState, i);
943
944 fputc(HDR_ES, fp);
945 //fprintf(fp, "%s", g_quark_to_string(es->t));
946 //fputc('\0', fp);
947 fwrite(&es->t, sizeof(es->t), 1, fp);
948 //fprintf(fp, "%s", g_quark_to_string(es->n));
949 //fputc('\0', fp);
950 fwrite(&es->n, sizeof(es->n), 1, fp);
951 //fprintf(fp, "%s", g_quark_to_string(es->s));
952 //fputc('\0', fp);
953 fwrite(&es->s, sizeof(es->s), 1, fp);
954 fwrite(&es->entry, sizeof(es->entry), 1, fp);
955 fwrite(&es->change, sizeof(es->change), 1, fp);
956 fwrite(&es->cum_cpu_time, sizeof(es->cum_cpu_time), 1, fp);
957 #if 0
958 fprintf(fp, " <ES MODE=\"%s\" SUBMODE=\"%s\" ENTRY_S=%lu ENTRY_NS=%lu",
959 g_quark_to_string(es->t), g_quark_to_string(es->n),
960 es->entry.tv_sec, es->entry.tv_nsec);
961 fprintf(fp, " CHANGE_S=%lu CHANGE_NS=%lu STATUS=\"%s\"/>\n",
962 es->change.tv_sec, es->change.tv_nsec, g_quark_to_string(es->s));
963 #endif //0
964 }
965
966 for(i = 0 ; i < process->user_stack->len; i++) {
967 address = g_array_index(process->user_stack, guint64, i);
968 fputc(HDR_USER_STACK, fp);
969 fwrite(&address, sizeof(address), 1, fp);
970 #if 0
971 fprintf(fp, " <USER_STACK ADDRESS=\"%llu\"/>\n",
972 address);
973 #endif //0
974 }
975
976 if(process->usertrace) {
977 fputc(HDR_USERTRACE, fp);
978 //fprintf(fp, "%s", g_quark_to_string(process->usertrace->tracefile_name));
979 //fputc('\0', fp);
980 fwrite(&process->usertrace->tracefile_name,
981 sizeof(process->usertrace->tracefile_name), 1, fp);
982 fwrite(&process->usertrace->cpu, sizeof(process->usertrace->cpu), 1, fp);
983 #if 0
984 fprintf(fp, " <USERTRACE NAME=\"%s\" CPU=%u\n/>",
985 g_quark_to_string(process->usertrace->tracefile_name),
986 process->usertrace->cpu);
987 #endif //0
988 }
989
990 }
991
992
993 void lttv_state_write_raw(LttvTraceState *self, LttTime t, FILE *fp)
994 {
995 guint i, nb_tracefile, nb_block, offset;
996 guint64 tsc;
997
998 LttvTracefileState *tfcs;
999
1000 LttTracefile *tf;
1001
1002 LttEventPosition *ep;
1003
1004 guint nb_cpus;
1005
1006 ep = ltt_event_position_new();
1007
1008 //fprintf(fp,"<PROCESS_STATE TIME_S=%lu TIME_NS=%lu>\n", t.tv_sec, t.tv_nsec);
1009 fputc(HDR_PROCESS_STATE, fp);
1010 fwrite(&t, sizeof(t), 1, fp);
1011
1012 g_hash_table_foreach(self->processes, write_process_state_raw, fp);
1013
1014 nb_cpus = ltt_trace_get_num_cpu(self->parent.t);
1015 for(i=0;i<nb_cpus;i++) {
1016 fputc(HDR_CPU, fp);
1017 fwrite(&i, sizeof(i), 1, fp); /* cpu number */
1018 fwrite(&self->running_process[i]->pid,
1019 sizeof(self->running_process[i]->pid), 1, fp);
1020 //fprintf(fp," <CPU NUM=%u RUNNING_PROCESS=%u>\n",
1021 // i, self->running_process[i]->pid);
1022 }
1023
1024 nb_tracefile = self->parent.tracefiles->len;
1025
1026 for(i = 0 ; i < nb_tracefile ; i++) {
1027 tfcs =
1028 LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
1029 LttvTracefileContext*, i));
1030 // fprintf(fp, " <TRACEFILE TIMESTAMP_S=%lu TIMESTAMP_NS=%lu",
1031 // tfcs->parent.timestamp.tv_sec,
1032 // tfcs->parent.timestamp.tv_nsec);
1033 fputc(HDR_TRACEFILE, fp);
1034 fwrite(&tfcs->parent.timestamp, sizeof(tfcs->parent.timestamp), 1, fp);
1035 /* Note : if timestamp if LTT_TIME_INFINITE, there will be no
1036 * position following : end of trace */
1037 LttEvent *e = ltt_tracefile_get_event(tfcs->parent.tf);
1038 if(e != NULL) {
1039 ltt_event_position(e, ep);
1040 ltt_event_position_get(ep, &tf, &nb_block, &offset, &tsc);
1041 //fprintf(fp, " BLOCK=%u OFFSET=%u TSC=%llu/>\n", nb_block, offset,
1042 // tsc);
1043 fwrite(&nb_block, sizeof(nb_block), 1, fp);
1044 fwrite(&offset, sizeof(offset), 1, fp);
1045 fwrite(&tsc, sizeof(tsc), 1, fp);
1046 }
1047 }
1048 g_free(ep);
1049 }
1050
1051
1052 /* Read process state from a file */
1053
1054 /* Called because a HDR_PROCESS was found */
1055 static void read_process_state_raw(LttvTraceState *self, FILE *fp,
1056 GPtrArray *quarktable)
1057 {
1058 LttvExecutionState *es;
1059 LttvProcessState *process, *parent_process;
1060 LttvProcessState tmp;
1061 GQuark tmpq;
1062
1063 guint64 *address;
1064
1065 /* TODO : check return value */
1066 fread(&tmp.type, sizeof(tmp.type), 1, fp);
1067 fread(&tmp.name, sizeof(tmp.name), 1, fp);
1068 fread(&tmp.brand, sizeof(tmp.brand), 1, fp);
1069 fread(&tmp.pid, sizeof(tmp.pid), 1, fp);
1070 fread(&tmp.free_events, sizeof(tmp.free_events), 1, fp);
1071 fread(&tmp.tgid, sizeof(tmp.tgid), 1, fp);
1072 fread(&tmp.ppid, sizeof(tmp.ppid), 1, fp);
1073 fread(&tmp.cpu, sizeof(tmp.cpu), 1, fp);
1074 fread(&tmp.creation_time, sizeof(tmp.creation_time), 1, fp);
1075 fread(&tmp.insertion_time, sizeof(tmp.insertion_time), 1, fp);
1076
1077 if(tmp.pid == 0) {
1078 process = lttv_state_find_process(self, tmp.cpu, tmp.pid);
1079 } else {
1080 /* We must link to the parent */
1081 parent_process = lttv_state_find_process_or_create(self, ANY_CPU, tmp.ppid,
1082 &ltt_time_zero);
1083 process = lttv_state_find_process(self, ANY_CPU, tmp.pid);
1084 if(process == NULL) {
1085 process = lttv_state_create_process(self, parent_process, tmp.cpu,
1086 tmp.pid, tmp.tgid,
1087 g_quark_from_string((gchar*)g_ptr_array_index(quarktable, tmp.name)),
1088 &tmp.creation_time);
1089 }
1090 }
1091 process->insertion_time = tmp.insertion_time;
1092 process->creation_time = tmp.creation_time;
1093 process->type = g_quark_from_string(
1094 (gchar*)g_ptr_array_index(quarktable, tmp.type));
1095 process->tgid = tmp.tgid;
1096 process->ppid = tmp.ppid;
1097 process->brand = g_quark_from_string(
1098 (gchar*)g_ptr_array_index(quarktable, tmp.brand));
1099 process->name =
1100 g_quark_from_string((gchar*)g_ptr_array_index(quarktable, tmp.name));
1101 process->free_events = tmp.free_events;
1102
1103 do {
1104 if(feof(fp) || ferror(fp)) goto end_loop;
1105
1106 gint hdr = fgetc(fp);
1107 if(hdr == EOF) goto end_loop;
1108
1109 switch(hdr) {
1110 case HDR_ES:
1111 process->execution_stack =
1112 g_array_set_size(process->execution_stack,
1113 process->execution_stack->len + 1);
1114 es = &g_array_index(process->execution_stack, LttvExecutionState,
1115 process->execution_stack->len-1);
1116 process->state = es;
1117
1118 fread(&es->t, sizeof(es->t), 1, fp);
1119 es->t = g_quark_from_string(
1120 (gchar*)g_ptr_array_index(quarktable, es->t));
1121 fread(&es->n, sizeof(es->n), 1, fp);
1122 es->n = g_quark_from_string(
1123 (gchar*)g_ptr_array_index(quarktable, es->n));
1124 fread(&es->s, sizeof(es->s), 1, fp);
1125 es->s = g_quark_from_string(
1126 (gchar*)g_ptr_array_index(quarktable, es->s));
1127 fread(&es->entry, sizeof(es->entry), 1, fp);
1128 fread(&es->change, sizeof(es->change), 1, fp);
1129 fread(&es->cum_cpu_time, sizeof(es->cum_cpu_time), 1, fp);
1130 break;
1131 case HDR_USER_STACK:
1132 process->user_stack = g_array_set_size(process->user_stack,
1133 process->user_stack->len + 1);
1134 address = &g_array_index(process->user_stack, guint64,
1135 process->user_stack->len-1);
1136 fread(address, sizeof(address), 1, fp);
1137 process->current_function = *address;
1138 break;
1139 case HDR_USERTRACE:
1140 fread(&tmpq, sizeof(tmpq), 1, fp);
1141 fread(&process->usertrace->cpu, sizeof(process->usertrace->cpu), 1, fp);
1142 break;
1143 default:
1144 ungetc(hdr, fp);
1145 goto end_loop;
1146 };
1147 } while(1);
1148 end_loop:
1149 return;
1150 }
1151
1152
1153 /* Called because a HDR_PROCESS_STATE was found */
1154 /* Append a saved state to the trace states */
1155 void lttv_state_read_raw(LttvTraceState *self, FILE *fp, GPtrArray *quarktable)
1156 {
1157 guint i, nb_tracefile, nb_block, offset;
1158 guint64 tsc;
1159 LttvTracefileState *tfcs;
1160
1161 LttEventPosition *ep;
1162
1163 guint nb_cpus;
1164
1165 int hdr;
1166
1167 LttTime t;
1168
1169 LttvAttribute *saved_states_tree, *saved_state_tree;
1170
1171 LttvAttributeValue value;
1172 GTree *pqueue = self->parent.ts_context->pqueue;
1173 ep = ltt_event_position_new();
1174
1175 restore_init_state(self);
1176
1177 fread(&t, sizeof(t), 1, fp);
1178
1179 do {
1180 if(feof(fp) || ferror(fp)) goto end_loop;
1181 hdr = fgetc(fp);
1182 if(hdr == EOF) goto end_loop;
1183
1184 switch(hdr) {
1185 case HDR_PROCESS:
1186 /* Call read_process_state_raw */
1187 read_process_state_raw(self, fp, quarktable);
1188 break;
1189 case HDR_TRACEFILE:
1190 case HDR_TRACESET:
1191 case HDR_TRACE:
1192 case HDR_QUARKS:
1193 case HDR_QUARK:
1194 case HDR_ES:
1195 case HDR_USER_STACK:
1196 case HDR_USERTRACE:
1197 case HDR_PROCESS_STATE:
1198 case HDR_CPU:
1199 ungetc(hdr, fp);
1200 goto end_loop;
1201 break;
1202 default:
1203 g_error("Error while parsing saved state file : unknown data header %d",
1204 hdr);
1205 };
1206 } while(1);
1207 end_loop:
1208
1209 nb_cpus = ltt_trace_get_num_cpu(self->parent.t);
1210 for(i=0;i<nb_cpus;i++) {
1211 int cpu_num;
1212 hdr = fgetc(fp);
1213 g_assert(hdr == HDR_CPU);
1214 fread(&cpu_num, sizeof(cpu_num), 1, fp); /* cpu number */
1215 g_assert(i == cpu_num);
1216 fread(&self->running_process[i]->pid,
1217 sizeof(self->running_process[i]->pid), 1, fp);
1218 }
1219
1220 nb_tracefile = self->parent.tracefiles->len;
1221
1222 for(i = 0 ; i < nb_tracefile ; i++) {
1223 tfcs =
1224 LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
1225 LttvTracefileContext*, i));
1226 // fprintf(fp, " <TRACEFILE TIMESTAMP_S=%lu TIMESTAMP_NS=%lu",
1227 // tfcs->parent.timestamp.tv_sec,
1228 // tfcs->parent.timestamp.tv_nsec);
1229 g_tree_remove(pqueue, &tfcs->parent);
1230 hdr = fgetc(fp);
1231 g_assert(hdr == HDR_TRACEFILE);
1232 fread(&tfcs->parent.timestamp, sizeof(tfcs->parent.timestamp), 1, fp);
1233 /* Note : if timestamp if LTT_TIME_INFINITE, there will be no
1234 * position following : end of trace */
1235 if(ltt_time_compare(tfcs->parent.timestamp, ltt_time_infinite) != 0) {
1236 fread(&nb_block, sizeof(nb_block), 1, fp);
1237 fread(&offset, sizeof(offset), 1, fp);
1238 fread(&tsc, sizeof(tsc), 1, fp);
1239 ltt_event_position_set(ep, tfcs->parent.tf, nb_block, offset, tsc);
1240 gint ret = ltt_tracefile_seek_position(tfcs->parent.tf, ep);
1241 g_assert(ret == 0);
1242 g_tree_insert(pqueue, &tfcs->parent, &tfcs->parent);
1243 }
1244 }
1245 g_free(ep);
1246
1247 saved_states_tree = lttv_attribute_find_subdir(self->parent.t_a,
1248 LTTV_STATE_SAVED_STATES);
1249 saved_state_tree = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
1250 value = lttv_attribute_add(saved_states_tree,
1251 lttv_attribute_get_number(saved_states_tree), LTTV_GOBJECT);
1252 *(value.v_gobject) = (GObject *)saved_state_tree;
1253 value = lttv_attribute_add(saved_state_tree, LTTV_STATE_TIME, LTTV_TIME);
1254 *(value.v_time) = t;
1255 lttv_state_save(self, saved_state_tree);
1256 g_debug("Saving state at time %lu.%lu", t.tv_sec,
1257 t.tv_nsec);
1258
1259 *(self->max_time_state_recomputed_in_seek) = t;
1260
1261 }
1262
1263 /* Called when a HDR_TRACE is found */
1264 void lttv_trace_states_read_raw(LttvTraceState *tcs, FILE *fp,
1265 GPtrArray *quarktable)
1266 {
1267 int hdr;
1268
1269 do {
1270 if(feof(fp) || ferror(fp)) goto end_loop;
1271 hdr = fgetc(fp);
1272 if(hdr == EOF) goto end_loop;
1273
1274 switch(hdr) {
1275 case HDR_PROCESS_STATE:
1276 /* Call read_process_state_raw */
1277 lttv_state_read_raw(tcs, fp, quarktable);
1278 break;
1279 case HDR_TRACEFILE:
1280 case HDR_TRACESET:
1281 case HDR_TRACE:
1282 case HDR_QUARKS:
1283 case HDR_QUARK:
1284 case HDR_ES:
1285 case HDR_USER_STACK:
1286 case HDR_USERTRACE:
1287 case HDR_PROCESS:
1288 case HDR_CPU:
1289 g_error("Error while parsing saved state file :"
1290 " unexpected data header %d",
1291 hdr);
1292 break;
1293 default:
1294 g_error("Error while parsing saved state file : unknown data header %d",
1295 hdr);
1296 };
1297 } while(1);
1298 end_loop:
1299 *(tcs->max_time_state_recomputed_in_seek) = tcs->parent.time_span.end_time;
1300 restore_init_state(tcs);
1301 lttv_process_trace_seek_time(&tcs->parent, ltt_time_zero);
1302 return;
1303 }
1304
1305
1306
1307 /* Copy each process from an existing hash table to a new one */
1308
1309 static void copy_process_state(gpointer key, gpointer value,gpointer user_data)
1310 {
1311 LttvProcessState *process, *new_process;
1312
1313 GHashTable *new_processes = (GHashTable *)user_data;
1314
1315 guint i;
1316
1317 process = (LttvProcessState *)value;
1318 new_process = g_new(LttvProcessState, 1);
1319 *new_process = *process;
1320 new_process->execution_stack = g_array_sized_new(FALSE, FALSE,
1321 sizeof(LttvExecutionState), PREALLOCATED_EXECUTION_STACK);
1322 new_process->execution_stack =
1323 g_array_set_size(new_process->execution_stack,
1324 process->execution_stack->len);
1325 for(i = 0 ; i < process->execution_stack->len; i++) {
1326 g_array_index(new_process->execution_stack, LttvExecutionState, i) =
1327 g_array_index(process->execution_stack, LttvExecutionState, i);
1328 }
1329 new_process->state = &g_array_index(new_process->execution_stack,
1330 LttvExecutionState, new_process->execution_stack->len - 1);
1331 new_process->user_stack = g_array_sized_new(FALSE, FALSE,
1332 sizeof(guint64), 0);
1333 new_process->user_stack =
1334 g_array_set_size(new_process->user_stack,
1335 process->user_stack->len);
1336 for(i = 0 ; i < process->user_stack->len; i++) {
1337 g_array_index(new_process->user_stack, guint64, i) =
1338 g_array_index(process->user_stack, guint64, i);
1339 }
1340 new_process->current_function = process->current_function;
1341
1342 /* fd hash table stuff */
1343 {
1344 GHashTableIter it;
1345 gpointer key;
1346 gpointer value;
1347
1348 /* copy every item in the hash table */
1349 new_process->fds = g_hash_table_new(g_direct_hash, g_direct_equal);
1350
1351 g_hash_table_iter_init(&it, process->fds);
1352 while (g_hash_table_iter_next (&it, (void *)&key, (void *)&value)) {
1353 g_hash_table_insert(new_process->fds, key, value);
1354 }
1355 }
1356
1357 /* When done creating the new process state, insert it in the
1358 * hash table */
1359 g_hash_table_insert(new_processes, new_process, new_process);
1360 }
1361
1362
1363 static GHashTable *lttv_state_copy_process_table(GHashTable *processes)
1364 {
1365 GHashTable *new_processes = g_hash_table_new(process_hash, process_equal);
1366
1367 g_hash_table_foreach(processes, copy_process_state, new_processes);
1368 return new_processes;
1369 }
1370
1371 static LttvCPUState *lttv_state_copy_cpu_states(LttvCPUState *states, guint n)
1372 {
1373 guint i,j;
1374 LttvCPUState *retval;
1375
1376 retval = g_new(LttvCPUState, n);
1377
1378 for(i=0; i<n; i++) {
1379 retval[i].irq_stack = g_array_new(FALSE, FALSE, sizeof(gint));
1380 g_array_set_size(retval[i].irq_stack, states[i].irq_stack->len);
1381 for(j=0; j<states[i].irq_stack->len; j++) {
1382 g_array_index(retval[i].irq_stack, gint, j) = g_array_index(states[i].irq_stack, gint, j);
1383 }
1384
1385 retval[i].softirq_stack = g_array_new(FALSE, FALSE, sizeof(gint));
1386 g_array_set_size(retval[i].softirq_stack, states[i].softirq_stack->len);
1387 for(j=0; j<states[i].softirq_stack->len; j++) {
1388 g_array_index(retval[i].softirq_stack, gint, j) = g_array_index(states[i].softirq_stack, gint, j);
1389 }
1390
1391 retval[i].trap_stack = g_array_new(FALSE, FALSE, sizeof(gint));
1392 g_array_set_size(retval[i].trap_stack, states[i].trap_stack->len);
1393 for(j=0; j<states[i].trap_stack->len; j++) {
1394 g_array_index(retval[i].trap_stack, gint, j) = g_array_index(states[i].trap_stack, gint, j);
1395 }
1396
1397 retval[i].mode_stack = g_array_new(FALSE, FALSE, sizeof(LttvCPUMode));
1398 g_array_set_size(retval[i].mode_stack, states[i].mode_stack->len);
1399 for(j=0; j<states[i].mode_stack->len; j++) {
1400 g_array_index(retval[i].mode_stack, GQuark, j) = g_array_index(states[i].mode_stack, GQuark, j);
1401 }
1402 }
1403
1404 return retval;
1405 }
1406
1407 static void lttv_state_free_cpu_states(LttvCPUState *states, guint n)
1408 {
1409 guint i;
1410
1411 for(i=0; i<n; i++) {
1412 g_array_free(states[i].mode_stack, TRUE);
1413 g_array_free(states[i].irq_stack, TRUE);
1414 g_array_free(states[i].softirq_stack, TRUE);
1415 g_array_free(states[i].trap_stack, TRUE);
1416 }
1417
1418 g_free(states);
1419 }
1420
1421 static LttvIRQState *lttv_state_copy_irq_states(LttvIRQState *states, guint n)
1422 {
1423 guint i,j;
1424 LttvIRQState *retval;
1425
1426 retval = g_new(LttvIRQState, n);
1427
1428 for(i=0; i<n; i++) {
1429 retval[i].mode_stack = g_array_new(FALSE, FALSE, sizeof(LttvIRQMode));
1430 g_array_set_size(retval[i].mode_stack, states[i].mode_stack->len);
1431 for(j=0; j<states[i].mode_stack->len; j++) {
1432 g_array_index(retval[i].mode_stack, GQuark, j) = g_array_index(states[i].mode_stack, GQuark, j);
1433 }
1434 }
1435
1436 return retval;
1437 }
1438
1439 static void lttv_state_free_irq_states(LttvIRQState *states, guint n)
1440 {
1441 guint i;
1442
1443 for(i=0; i<n; i++) {
1444 g_array_free(states[i].mode_stack, TRUE);
1445 }
1446
1447 g_free(states);
1448 }
1449
1450 static LttvSoftIRQState *lttv_state_copy_soft_irq_states(LttvSoftIRQState *states, guint n)
1451 {
1452 guint i;
1453 LttvSoftIRQState *retval;
1454
1455 retval = g_new(LttvSoftIRQState, n);
1456
1457 for(i=0; i<n; i++) {
1458 retval[i].pending = states[i].pending;
1459 retval[i].running = states[i].running;
1460 }
1461
1462 return retval;
1463 }
1464
1465 static void lttv_state_free_soft_irq_states(LttvSoftIRQState *states, guint n)
1466 {
1467 g_free(states);
1468 }
1469
1470 static LttvTrapState *lttv_state_copy_trap_states(LttvTrapState *states, guint n)
1471 {
1472 guint i;
1473 LttvTrapState *retval;
1474
1475 retval = g_new(LttvTrapState, n);
1476
1477 for(i=0; i<n; i++) {
1478 retval[i].running = states[i].running;
1479 }
1480
1481 return retval;
1482 }
1483
1484 static void lttv_state_free_trap_states(LttvTrapState *states, guint n)
1485 {
1486 g_free(states);
1487 }
1488
1489 /* bdevstate stuff */
1490
1491 static LttvBdevState *get_hashed_bdevstate(LttvTraceState *ts, guint16 devcode)
1492 {
1493 gint devcode_gint = devcode;
1494 gpointer bdev = g_hash_table_lookup(ts->bdev_states, &devcode_gint);
1495 if(bdev == NULL) {
1496 LttvBdevState *bdevstate = g_new(LttvBdevState, 1);
1497 bdevstate->mode_stack = g_array_new(FALSE, FALSE, sizeof(GQuark));
1498
1499 gint * key = g_new(gint, 1);
1500 *key = devcode;
1501 g_hash_table_insert(ts->bdev_states, key, bdevstate);
1502
1503 bdev = bdevstate;
1504 }
1505
1506 return bdev;
1507 }
1508
1509 static LttvBdevState *bdevstate_new(void)
1510 {
1511 LttvBdevState *retval;
1512 retval = g_new(LttvBdevState, 1);
1513 retval->mode_stack = g_array_new(FALSE, FALSE, sizeof(GQuark));
1514
1515 return retval;
1516 }
1517
1518 static void bdevstate_free(LttvBdevState *bds)
1519 {
1520 g_array_free(bds->mode_stack, TRUE);
1521 g_free(bds);
1522 }
1523
1524 static void bdevstate_free_cb(gpointer key, gpointer value, gpointer user_data)
1525 {
1526 LttvBdevState *bds = (LttvBdevState *) value;
1527
1528 bdevstate_free(bds);
1529 }
1530
1531 static LttvBdevState *bdevstate_copy(LttvBdevState *bds)
1532 {
1533 LttvBdevState *retval;
1534
1535 retval = bdevstate_new();
1536 g_array_insert_vals(retval->mode_stack, 0, bds->mode_stack->data, bds->mode_stack->len);
1537
1538 return retval;
1539 }
1540
1541 static void insert_and_copy_bdev_state(gpointer k, gpointer v, gpointer u)
1542 {
1543 //GHashTable *ht = (GHashTable *)u;
1544 LttvBdevState *bds = (LttvBdevState *)v;
1545 LttvBdevState *newbds;
1546
1547 newbds = bdevstate_copy(bds);
1548
1549 g_hash_table_insert(u, k, newbds);
1550 }
1551
1552 static GHashTable *lttv_state_copy_blkdev_hashtable(GHashTable *ht)
1553 {
1554 GHashTable *retval;
1555
1556 retval = g_hash_table_new(g_int_hash, g_int_equal);
1557
1558 g_hash_table_foreach(ht, insert_and_copy_bdev_state, retval);
1559
1560 return retval;
1561 }
1562
1563 /* Free a hashtable and the LttvBdevState structures its values
1564 * point to. */
1565
1566 static void lttv_state_free_blkdev_hashtable(GHashTable *ht)
1567 {
1568 g_hash_table_foreach(ht, bdevstate_free_cb, NULL);
1569 g_hash_table_destroy(ht);
1570 }
1571
1572 /* The saved state for each trace contains a member "processes", which
1573 stores a copy of the process table, and a member "tracefiles" with
1574 one entry per tracefile. Each tracefile has a "process" member pointing
1575 to the current process and a "position" member storing the tracefile
1576 position (needed to seek to the current "next" event. */
1577
1578 static void state_save(LttvTraceState *self, LttvAttribute *container)
1579 {
1580 guint i, nb_tracefile, nb_cpus, nb_irqs, nb_soft_irqs, nb_traps;
1581
1582 LttvTracefileState *tfcs;
1583
1584 LttvAttribute *tracefiles_tree, *tracefile_tree;
1585
1586 guint *running_process;
1587
1588 LttvAttributeValue value;
1589
1590 LttEventPosition *ep;
1591
1592 tracefiles_tree = lttv_attribute_find_subdir(container,
1593 LTTV_STATE_TRACEFILES);
1594
1595 value = lttv_attribute_add(container, LTTV_STATE_PROCESSES,
1596 LTTV_POINTER);
1597 *(value.v_pointer) = lttv_state_copy_process_table(self->processes);
1598
1599 /* Add the currently running processes array */
1600 nb_cpus = ltt_trace_get_num_cpu(self->parent.t);
1601 running_process = g_new(guint, nb_cpus);
1602 for(i=0;i<nb_cpus;i++) {
1603 running_process[i] = self->running_process[i]->pid;
1604 }
1605 value = lttv_attribute_add(container, LTTV_STATE_RUNNING_PROCESS,
1606 LTTV_POINTER);
1607 *(value.v_pointer) = running_process;
1608
1609 g_info("State save");
1610
1611 nb_tracefile = self->parent.tracefiles->len;
1612
1613 for(i = 0 ; i < nb_tracefile ; i++) {
1614 tfcs =
1615 LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
1616 LttvTracefileContext*, i));
1617 tracefile_tree = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
1618 value = lttv_attribute_add(tracefiles_tree, i,
1619 LTTV_GOBJECT);
1620 *(value.v_gobject) = (GObject *)tracefile_tree;
1621 #if 0
1622 value = lttv_attribute_add(tracefile_tree, LTTV_STATE_PROCESS,
1623 LTTV_UINT);
1624 *(value.v_uint) = tfcs->process->pid;
1625 #endif //0
1626 value = lttv_attribute_add(tracefile_tree, LTTV_STATE_EVENT,
1627 LTTV_POINTER);
1628 /* Only save the position if the tfs has not infinite time. */
1629 //if(!g_tree_lookup(self->parent.ts_context->pqueue, &tfcs->parent)
1630 // && current_tfcs != tfcs) {
1631 if(ltt_time_compare(tfcs->parent.timestamp, ltt_time_infinite) == 0) {
1632 *(value.v_pointer) = NULL;
1633 } else {
1634 LttEvent *e = ltt_tracefile_get_event(tfcs->parent.tf);
1635 ep = ltt_event_position_new();
1636 ltt_event_position(e, ep);
1637 *(value.v_pointer) = ep;
1638
1639 guint nb_block, offset;
1640 guint64 tsc;
1641 LttTracefile *tf;
1642 ltt_event_position_get(ep, &tf, &nb_block, &offset, &tsc);
1643 g_info("Block %u offset %u tsc %" PRIu64 " time %lu.%lu", nb_block, offset,
1644 tsc,
1645 tfcs->parent.timestamp.tv_sec, tfcs->parent.timestamp.tv_nsec);
1646 }
1647 }
1648
1649 /* save the cpu state */
1650 {
1651 value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_CPUS_COUNT,
1652 LTTV_UINT);
1653 *(value.v_uint) = nb_cpus;
1654
1655 value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_CPUS,
1656 LTTV_POINTER);
1657 *(value.v_pointer) = lttv_state_copy_cpu_states(self->cpu_states, nb_cpus);
1658 }
1659
1660 /* save the irq state */
1661 nb_irqs = self->name_tables->nb_irqs;
1662 {
1663 value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_IRQS,
1664 LTTV_POINTER);
1665 *(value.v_pointer) = lttv_state_copy_irq_states(self->irq_states, nb_irqs);
1666 }
1667
1668 /* save the soft irq state */
1669 nb_soft_irqs = self->name_tables->nb_soft_irqs;
1670 {
1671 value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_SOFT_IRQS,
1672 LTTV_POINTER);
1673 *(value.v_pointer) = lttv_state_copy_soft_irq_states(self->soft_irq_states, nb_soft_irqs);
1674 }
1675
1676 /* save the trap state */
1677 nb_traps = self->name_tables->nb_traps;
1678 {
1679 value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_TRAPS,
1680 LTTV_POINTER);
1681 *(value.v_pointer) = lttv_state_copy_trap_states(self->trap_states, nb_traps);
1682 }
1683
1684 /* save the blkdev states */
1685 value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_BLKDEVS,
1686 LTTV_POINTER);
1687 *(value.v_pointer) = lttv_state_copy_blkdev_hashtable(self->bdev_states);
1688 }
1689
1690
1691 static void state_restore(LttvTraceState *self, LttvAttribute *container)
1692 {
1693 guint i, nb_tracefile, pid, nb_cpus, nb_irqs, nb_soft_irqs, nb_traps;
1694
1695 LttvTracefileState *tfcs;
1696
1697 LttvAttribute *tracefiles_tree, *tracefile_tree;
1698
1699 guint *running_process;
1700
1701 LttvAttributeType type;
1702
1703 LttvAttributeValue value;
1704
1705 LttvAttributeName name;
1706
1707 gboolean is_named;
1708
1709 LttEventPosition *ep;
1710
1711 LttvTracesetContext *tsc = self->parent.ts_context;
1712 int retval;
1713
1714 tracefiles_tree = lttv_attribute_find_subdir(container,
1715 LTTV_STATE_TRACEFILES);
1716
1717 type = lttv_attribute_get_by_name(container, LTTV_STATE_PROCESSES,
1718 &value);
1719 g_assert(type == LTTV_POINTER);
1720 lttv_state_free_process_table(self->processes);
1721 self->processes = lttv_state_copy_process_table(*(value.v_pointer));
1722
1723 /* Add the currently running processes array */
1724 nb_cpus = ltt_trace_get_num_cpu(self->parent.t);
1725 type = lttv_attribute_get_by_name(container, LTTV_STATE_RUNNING_PROCESS,
1726 &value);
1727 g_assert(type == LTTV_POINTER);
1728 running_process = *(value.v_pointer);
1729 for(i=0;i<nb_cpus;i++) {
1730 pid = running_process[i];
1731 self->running_process[i] = lttv_state_find_process(self, i, pid);
1732 g_assert(self->running_process[i] != NULL);
1733 }
1734
1735 nb_tracefile = self->parent.tracefiles->len;
1736
1737 //g_tree_destroy(tsc->pqueue);
1738 //tsc->pqueue = g_tree_new(compare_tracefile);
1739
1740 /* restore cpu resource states */
1741 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_CPUS, &value);
1742 g_assert(type == LTTV_POINTER);
1743 lttv_state_free_cpu_states(self->cpu_states, nb_cpus);
1744 self->cpu_states = lttv_state_copy_cpu_states(*(value.v_pointer), nb_cpus);
1745
1746 /* restore irq resource states */
1747 nb_irqs = self->name_tables->nb_irqs;
1748 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_IRQS, &value);
1749 g_assert(type == LTTV_POINTER);
1750 lttv_state_free_irq_states(self->irq_states, nb_irqs);
1751 self->irq_states = lttv_state_copy_irq_states(*(value.v_pointer), nb_irqs);
1752
1753 /* restore soft irq resource states */
1754 nb_soft_irqs = self->name_tables->nb_soft_irqs;
1755 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_SOFT_IRQS, &value);
1756 g_assert(type == LTTV_POINTER);
1757 lttv_state_free_soft_irq_states(self->soft_irq_states, nb_soft_irqs);
1758 self->soft_irq_states = lttv_state_copy_soft_irq_states(*(value.v_pointer), nb_soft_irqs);
1759
1760 /* restore trap resource states */
1761 nb_traps = self->name_tables->nb_traps;
1762 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_TRAPS, &value);
1763 g_assert(type == LTTV_POINTER);
1764 lttv_state_free_trap_states(self->trap_states, nb_traps);
1765 self->trap_states = lttv_state_copy_trap_states(*(value.v_pointer), nb_traps);
1766
1767 /* restore the blkdev states */
1768 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_BLKDEVS, &value);
1769 g_assert(type == LTTV_POINTER);
1770 lttv_state_free_blkdev_hashtable(self->bdev_states);
1771 self->bdev_states = lttv_state_copy_blkdev_hashtable(*(value.v_pointer));
1772
1773 for(i = 0 ; i < nb_tracefile ; i++) {
1774 tfcs =
1775 LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
1776 LttvTracefileContext*, i));
1777 type = lttv_attribute_get(tracefiles_tree, i, &name, &value, &is_named);
1778 g_assert(type == LTTV_GOBJECT);
1779 tracefile_tree = *((LttvAttribute **)(value.v_gobject));
1780 #if 0
1781 type = lttv_attribute_get_by_name(tracefile_tree, LTTV_STATE_PROCESS,
1782 &value);
1783 g_assert(type == LTTV_UINT);
1784 pid = *(value.v_uint);
1785 tfcs->process = lttv_state_find_process_or_create(tfcs, pid);
1786 #endif //0
1787 type = lttv_attribute_get_by_name(tracefile_tree, LTTV_STATE_EVENT,
1788 &value);
1789 g_assert(type == LTTV_POINTER);
1790 //g_assert(*(value.v_pointer) != NULL);
1791 ep = *(value.v_pointer);
1792 g_assert(tfcs->parent.t_context != NULL);
1793
1794 tfcs->cpu_state = &self->cpu_states[tfcs->cpu];
1795
1796 LttvTracefileContext *tfc = LTTV_TRACEFILE_CONTEXT(tfcs);
1797 g_tree_remove(tsc->pqueue, tfc);
1798
1799 if(ep != NULL) {
1800 retval= ltt_tracefile_seek_position(tfc->tf, ep);
1801 g_assert_cmpint(retval, ==, 0);
1802 tfc->timestamp = ltt_event_time(ltt_tracefile_get_event(tfc->tf));
1803 g_assert_cmpint(ltt_time_compare(tfc->timestamp, ltt_time_infinite), !=, 0);
1804 g_tree_insert(tsc->pqueue, tfc, tfc);
1805 g_info("Restoring state for a tf at time %lu.%lu", tfc->timestamp.tv_sec, tfc->timestamp.tv_nsec);
1806 } else {
1807 tfc->timestamp = ltt_time_infinite;
1808 }
1809 }
1810 }
1811
1812
1813 static void state_saved_free(LttvTraceState *self, LttvAttribute *container)
1814 {
1815 guint i, nb_tracefile, nb_cpus, nb_irqs, nb_soft_irqs;
1816
1817 LttvTracefileState *tfcs;
1818
1819 LttvAttribute *tracefiles_tree, *tracefile_tree;
1820
1821 guint *running_process;
1822
1823 LttvAttributeType type;
1824
1825 LttvAttributeValue value;
1826
1827 LttvAttributeName name;
1828
1829 gboolean is_named;
1830
1831 tracefiles_tree = lttv_attribute_find_subdir(container,
1832 LTTV_STATE_TRACEFILES);
1833 g_object_ref(G_OBJECT(tracefiles_tree));
1834 lttv_attribute_remove_by_name(container, LTTV_STATE_TRACEFILES);
1835
1836 type = lttv_attribute_get_by_name(container, LTTV_STATE_PROCESSES,
1837 &value);
1838 g_assert(type == LTTV_POINTER);
1839 lttv_state_free_process_table(*(value.v_pointer));
1840 *(value.v_pointer) = NULL;
1841 lttv_attribute_remove_by_name(container, LTTV_STATE_PROCESSES);
1842
1843 /* Free running processes array */
1844 type = lttv_attribute_get_by_name(container, LTTV_STATE_RUNNING_PROCESS,
1845 &value);
1846 g_assert(type == LTTV_POINTER);
1847 running_process = *(value.v_pointer);
1848 g_free(running_process);
1849
1850 /* free cpu resource states */
1851 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_CPUS_COUNT, &value);
1852 g_assert(type == LTTV_UINT);
1853 nb_cpus = *value.v_uint;
1854 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_CPUS, &value);
1855 g_assert(type == LTTV_POINTER);
1856 lttv_state_free_cpu_states(*(value.v_pointer), nb_cpus);
1857
1858 /* free irq resource states */
1859 nb_irqs = self->name_tables->nb_irqs;
1860 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_IRQS, &value);
1861 g_assert(type == LTTV_POINTER);
1862 lttv_state_free_irq_states(*(value.v_pointer), nb_irqs);
1863
1864 /* free softirq resource states */
1865 nb_soft_irqs = self->name_tables->nb_soft_irqs;
1866 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_SOFT_IRQS, &value);
1867 g_assert(type == LTTV_POINTER);
1868 lttv_state_free_soft_irq_states(*(value.v_pointer), nb_soft_irqs);
1869
1870 /* free the blkdev states */
1871 type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_BLKDEVS, &value);
1872 g_assert(type == LTTV_POINTER);
1873 lttv_state_free_blkdev_hashtable(*(value.v_pointer));
1874
1875 nb_tracefile = self->parent.tracefiles->len;
1876
1877 for(i = 0 ; i < nb_tracefile ; i++) {
1878 tfcs =
1879 LTTV_TRACEFILE_STATE(g_array_index(self->parent.tracefiles,
1880 LttvTracefileContext*, i));
1881 type = lttv_attribute_get(tracefiles_tree, i, &name, &value, &is_named);
1882 g_assert(type == LTTV_GOBJECT);
1883 tracefile_tree = *((LttvAttribute **)(value.v_gobject));
1884
1885 type = lttv_attribute_get_by_name(tracefile_tree, LTTV_STATE_EVENT,
1886 &value);
1887 g_assert(type == LTTV_POINTER);
1888 if(*(value.v_pointer) != NULL) g_free(*(value.v_pointer));
1889 }
1890 g_object_unref(G_OBJECT(tracefiles_tree));
1891 }
1892
1893
1894 static void free_saved_state(LttvTraceState *self)
1895 {
1896 guint i, nb;
1897
1898 LttvAttributeType type;
1899
1900 LttvAttributeValue value;
1901
1902 LttvAttributeName name;
1903
1904 gboolean is_named;
1905
1906 LttvAttribute *saved_states;
1907
1908 saved_states = lttv_attribute_find_subdir(self->parent.t_a,
1909 LTTV_STATE_SAVED_STATES);
1910
1911 nb = lttv_attribute_get_number(saved_states);
1912 for(i = 0 ; i < nb ; i++) {
1913 type = lttv_attribute_get(saved_states, i, &name, &value, &is_named);
1914 g_assert(type == LTTV_GOBJECT);
1915 state_saved_free(self, *((LttvAttribute **)value.v_gobject));
1916 }
1917
1918 lttv_attribute_remove_by_name(self->parent.t_a, LTTV_STATE_SAVED_STATES);
1919 }
1920
1921
1922 static void
1923 create_max_time(LttvTraceState *tcs)
1924 {
1925 LttvAttributeValue v;
1926
1927 lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_SAVED_STATES_TIME,
1928 LTTV_POINTER, &v);
1929 g_assert(*(v.v_pointer) == NULL);
1930 *(v.v_pointer) = g_new(LttTime,1);
1931 *((LttTime *)*(v.v_pointer)) = ltt_time_zero;
1932 }
1933
1934
1935 static void
1936 get_max_time(LttvTraceState *tcs)
1937 {
1938 LttvAttributeValue v;
1939
1940 lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_SAVED_STATES_TIME,
1941 LTTV_POINTER, &v);
1942 g_assert(*(v.v_pointer) != NULL);
1943 tcs->max_time_state_recomputed_in_seek = (LttTime *)*(v.v_pointer);
1944 }
1945
1946
1947 static void
1948 free_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_free(*(v.v_pointer));
1955 *(v.v_pointer) = NULL;
1956 }
1957
1958 static void
1959 create_name_tables(LttvTraceState *tcs)
1960 {
1961 int i;
1962
1963 GString *fe_name = g_string_new("");
1964
1965 LttvNameTables *name_tables = g_new(LttvNameTables, 1);
1966
1967 LttvAttributeValue v;
1968
1969 GArray *hooks;
1970
1971 lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_NAME_TABLES,
1972 LTTV_POINTER, &v);
1973 g_assert(*(v.v_pointer) == NULL);
1974 *(v.v_pointer) = name_tables;
1975
1976 hooks = g_array_sized_new(FALSE, FALSE, sizeof(LttvTraceHook), 1);
1977
1978 if(!lttv_trace_find_hook(tcs->parent.t,
1979 LTT_CHANNEL_KERNEL,
1980 LTT_EVENT_SYSCALL_ENTRY,
1981 FIELD_ARRAY(LTT_FIELD_SYSCALL_ID),
1982 NULL, NULL, &hooks)) {
1983
1984 // th = lttv_trace_hook_get_first(&th);
1985 //
1986 // t = ltt_field_type(lttv_trace_get_hook_field(th, 0));
1987 // nb = ltt_type_element_number(t);
1988 //
1989 // name_tables->syscall_names = g_new(GQuark, nb);
1990 // name_tables->nb_syscalls = nb;
1991 //
1992 // for(i = 0 ; i < nb ; i++) {
1993 // name_tables->syscall_names[i] = ltt_enum_string_get(t, i);
1994 // if(!name_tables->syscall_names[i]) {
1995 // GString *string = g_string_new("");
1996 // g_string_printf(string, "syscall %u", i);
1997 // name_tables->syscall_names[i] = g_quark_from_string(string->str);
1998 // g_string_free(string, TRUE);
1999 // }
2000 // }
2001
2002 name_tables->nb_syscalls = 256;
2003 name_tables->syscall_names = g_new(GQuark, 256);
2004 for(i = 0 ; i < 256 ; i++) {
2005 g_string_printf(fe_name, "syscall %d", i);
2006 name_tables->syscall_names[i] = g_quark_from_string(fe_name->str);
2007 }
2008 } else {
2009 name_tables->syscall_names = NULL;
2010 name_tables->nb_syscalls = 0;
2011 }
2012 lttv_trace_hook_remove_all(&hooks);
2013
2014 if(!lttv_trace_find_hook(tcs->parent.t,
2015 LTT_CHANNEL_KERNEL,
2016 LTT_EVENT_TRAP_ENTRY,
2017 FIELD_ARRAY(LTT_FIELD_TRAP_ID),
2018 NULL, NULL, &hooks) ||
2019 !lttv_trace_find_hook(tcs->parent.t,
2020 LTT_CHANNEL_KERNEL,
2021 LTT_EVENT_PAGE_FAULT_ENTRY,
2022 FIELD_ARRAY(LTT_FIELD_TRAP_ID),
2023 NULL, NULL, &hooks)) {
2024
2025 // th = lttv_trace_hook_get_first(&th);
2026 //
2027 // t = ltt_field_type(lttv_trace_get_hook_field(th, 0));
2028 // //nb = ltt_type_element_number(t);
2029 //
2030 // name_tables->trap_names = g_new(GQuark, nb);
2031 // for(i = 0 ; i < nb ; i++) {
2032 // name_tables->trap_names[i] = g_quark_from_string(
2033 // ltt_enum_string_get(t, i));
2034 // }
2035
2036 name_tables->nb_traps = 256;
2037 name_tables->trap_names = g_new(GQuark, 256);
2038 for(i = 0 ; i < 256 ; i++) {
2039 g_string_printf(fe_name, "trap %d", i);
2040 name_tables->trap_names[i] = g_quark_from_string(fe_name->str);
2041 }
2042 } else {
2043 name_tables->trap_names = NULL;
2044 name_tables->nb_traps = 0;
2045 }
2046 lttv_trace_hook_remove_all(&hooks);
2047
2048 if(!lttv_trace_find_hook(tcs->parent.t,
2049 LTT_CHANNEL_KERNEL,
2050 LTT_EVENT_IRQ_ENTRY,
2051 FIELD_ARRAY(LTT_FIELD_IRQ_ID),
2052 NULL, NULL, &hooks)) {
2053
2054 /*
2055 name_tables->irq_names = g_new(GQuark, nb);
2056 for(i = 0 ; i < nb ; i++) {
2057 name_tables->irq_names[i] = g_quark_from_string(ltt_enum_string_get(t, i));
2058 }
2059 */
2060
2061 name_tables->nb_irqs = 256;
2062 name_tables->irq_names = g_new(GQuark, 256);
2063 for(i = 0 ; i < 256 ; i++) {
2064 g_string_printf(fe_name, "irq %d", i);
2065 name_tables->irq_names[i] = g_quark_from_string(fe_name->str);
2066 }
2067 } else {
2068 name_tables->nb_irqs = 0;
2069 name_tables->irq_names = NULL;
2070 }
2071 lttv_trace_hook_remove_all(&hooks);
2072 /*
2073 name_tables->soft_irq_names = g_new(GQuark, nb);
2074 for(i = 0 ; i < nb ; i++) {
2075 name_tables->soft_irq_names[i] = g_quark_from_string(ltt_enum_string_get(t, i));
2076 }
2077 */
2078
2079 /* the kernel is limited to 32 statically defined softirqs */
2080 name_tables->nb_soft_irqs = 32;
2081 name_tables->soft_irq_names = g_new(GQuark, name_tables->nb_soft_irqs);
2082 for(i = 0 ; i < name_tables->nb_soft_irqs ; i++) {
2083 g_string_printf(fe_name, "softirq %d", i);
2084 name_tables->soft_irq_names[i] = g_quark_from_string(fe_name->str);
2085 }
2086 g_array_free(hooks, TRUE);
2087
2088 g_string_free(fe_name, TRUE);
2089
2090 #if (__WORDSIZE == 32)
2091 name_tables->kprobe_hash = g_hash_table_new_full(guint64_hash, guint64_equal,
2092 g_free, NULL);
2093 #else
2094 name_tables->kprobe_hash = g_hash_table_new(g_direct_hash, g_direct_equal);
2095 #endif
2096 }
2097
2098
2099 static void
2100 get_name_tables(LttvTraceState *tcs)
2101 {
2102 LttvAttributeValue v;
2103
2104 lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_NAME_TABLES,
2105 LTTV_POINTER, &v);
2106 g_assert(*(v.v_pointer) != NULL);
2107 tcs->name_tables = (LttvNameTables *)*(v.v_pointer);
2108 }
2109
2110
2111 static void
2112 free_name_tables(LttvTraceState *tcs)
2113 {
2114 LttvNameTables *name_tables;
2115
2116 LttvAttributeValue v;
2117
2118 lttv_attribute_find(tcs->parent.t_a, LTTV_STATE_NAME_TABLES,
2119 LTTV_POINTER, &v);
2120 name_tables = (LttvNameTables *)*(v.v_pointer);
2121 *(v.v_pointer) = NULL;
2122
2123 // g_free(name_tables->eventtype_names);
2124 if(name_tables->syscall_names) g_free(name_tables->syscall_names);
2125 if(name_tables->trap_names) g_free(name_tables->trap_names);
2126 if(name_tables->irq_names) g_free(name_tables->irq_names);
2127 if(name_tables->soft_irq_names) g_free(name_tables->soft_irq_names);
2128 g_hash_table_destroy(name_tables->kprobe_hash);
2129 g_free(name_tables);
2130 }
2131
2132 #ifdef HASH_TABLE_DEBUG
2133
2134 static void test_process(gpointer key, gpointer value, gpointer user_data)
2135 {
2136 LttvProcessState *process = (LttvProcessState *)value;
2137
2138 /* Test for process corruption */
2139 guint stack_len = process->execution_stack->len;
2140 }
2141
2142 static void hash_table_check(GHashTable *table)
2143 {
2144 g_hash_table_foreach(table, test_process, NULL);
2145 }
2146
2147
2148 #endif
2149
2150 /* clears the stack and sets the state passed as argument */
2151 static void cpu_set_base_mode(LttvCPUState *cpust, LttvCPUMode state)
2152 {
2153 g_array_set_size(cpust->mode_stack, 1);
2154 ((GQuark *)cpust->mode_stack->data)[0] = state;
2155 }
2156
2157 static void cpu_push_mode(LttvCPUState *cpust, LttvCPUMode state)
2158 {
2159 g_array_set_size(cpust->mode_stack, cpust->mode_stack->len + 1);
2160 ((GQuark *)cpust->mode_stack->data)[cpust->mode_stack->len - 1] = state;
2161 }
2162
2163 static void cpu_pop_mode(LttvCPUState *cpust)
2164 {
2165 if(cpust->mode_stack->len <= 1)
2166 cpu_set_base_mode(cpust, LTTV_CPU_UNKNOWN);
2167 else
2168 g_array_set_size(cpust->mode_stack, cpust->mode_stack->len - 1);
2169 }
2170
2171 /* clears the stack and sets the state passed as argument */
2172 static void bdev_set_base_mode(LttvBdevState *bdevst, LttvBdevMode state)
2173 {
2174 g_array_set_size(bdevst->mode_stack, 1);
2175 ((GQuark *)bdevst->mode_stack->data)[0] = state;
2176 }
2177
2178 static void bdev_push_mode(LttvBdevState *bdevst, LttvBdevMode state)
2179 {
2180 g_array_set_size(bdevst->mode_stack, bdevst->mode_stack->len + 1);
2181 ((GQuark *)bdevst->mode_stack->data)[bdevst->mode_stack->len - 1] = state;
2182 }
2183
2184 static void bdev_pop_mode(LttvBdevState *bdevst)
2185 {
2186 if(bdevst->mode_stack->len <= 1)
2187 bdev_set_base_mode(bdevst, LTTV_BDEV_UNKNOWN);
2188 else
2189 g_array_set_size(bdevst->mode_stack, bdevst->mode_stack->len - 1);
2190 }
2191
2192 static void irq_set_base_mode(LttvIRQState *irqst, LttvIRQMode state)
2193 {
2194 g_array_set_size(irqst->mode_stack, 1);
2195 ((GQuark *)irqst->mode_stack->data)[0] = state;
2196 }
2197
2198 static void irq_push_mode(LttvIRQState *irqst, LttvIRQMode state)
2199 {
2200 g_array_set_size(irqst->mode_stack, irqst->mode_stack->len + 1);
2201 ((GQuark *)irqst->mode_stack->data)[irqst->mode_stack->len - 1] = state;
2202 }
2203
2204 static void irq_pop_mode(LttvIRQState *irqst)
2205 {
2206 if(irqst->mode_stack->len <= 1)
2207 irq_set_base_mode(irqst, LTTV_IRQ_UNKNOWN);
2208 else
2209 g_array_set_size(irqst->mode_stack, irqst->mode_stack->len - 1);
2210 }
2211
2212 static void push_state(LttvTracefileState *tfs, LttvExecutionMode t,
2213 guint state_id)
2214 {
2215 LttvExecutionState *es;
2216
2217 LttvTraceState *ts = (LttvTraceState*)tfs->parent.t_context;
2218 guint cpu = tfs->cpu;
2219
2220 #ifdef HASH_TABLE_DEBUG
2221 hash_table_check(ts->processes);
2222 #endif
2223 LttvProcessState *process = ts->running_process[cpu];
2224
2225 guint depth = process->execution_stack->len;
2226
2227 process->execution_stack =
2228 g_array_set_size(process->execution_stack, depth + 1);
2229 /* Keep in sync */
2230 process->state =
2231 &g_array_index(process->execution_stack, LttvExecutionState, depth - 1);
2232
2233 es = &g_array_index(process->execution_stack, LttvExecutionState, depth);
2234 es->t = t;
2235 es->n = state_id;
2236 es->entry = es->change = tfs->parent.timestamp;
2237 es->cum_cpu_time = ltt_time_zero;
2238 es->s = process->state->s;
2239 process->state = es;
2240 }
2241
2242 /* pop state
2243 * return 1 when empty, else 0 */
2244 int lttv_state_pop_state_cleanup(LttvProcessState *process,
2245 LttvTracefileState *tfs)
2246 {
2247 guint depth = process->execution_stack->len;
2248
2249 if(depth == 1){
2250 return 1;
2251 }
2252
2253 process->execution_stack =
2254 g_array_set_size(process->execution_stack, depth - 1);
2255 process->state = &g_array_index(process->execution_stack, LttvExecutionState,
2256 depth - 2);
2257 process->state->change = tfs->parent.timestamp;
2258
2259 return 0;
2260 }
2261
2262 static void pop_state(LttvTracefileState *tfs, LttvExecutionMode t)
2263 {
2264 guint cpu = tfs->cpu;
2265 LttvTraceState *ts = (LttvTraceState*)tfs->parent.t_context;
2266 LttvProcessState *process = ts->running_process[cpu];
2267
2268 guint depth = process->execution_stack->len;
2269
2270 if(process->state->t != t){
2271 g_info("Different execution mode type (%lu.%09lu): ignore it\n",
2272 tfs->parent.timestamp.tv_sec, tfs->parent.timestamp.tv_nsec);
2273 g_info("process state has %s when pop_int is %s\n",
2274 g_quark_to_string(process->state->t),
2275 g_quark_to_string(t));
2276 g_info("{ %u, %u, %s, %s, %s }\n",
2277 process->pid,
2278 process->ppid,
2279 g_quark_to_string(process->name),
2280 g_quark_to_string(process->brand),
2281 g_quark_to_string(process->state->s));
2282 return;
2283 }
2284
2285 if(depth == 1){
2286 g_info("Trying to pop last state on stack (%lu.%09lu): ignore it\n",
2287 tfs->parent.timestamp.tv_sec, tfs->parent.timestamp.tv_nsec);
2288 return;
2289 }
2290
2291 process->execution_stack =
2292 g_array_set_size(process->execution_stack, depth - 1);
2293 process->state = &g_array_index(process->execution_stack, LttvExecutionState,
2294 depth - 2);
2295 process->state->change = tfs->parent.timestamp;
2296 }
2297
2298 struct search_result {
2299 const LttTime *time; /* Requested time */
2300 LttTime *best; /* Best result */
2301 };
2302
2303 static gint search_usertrace(gconstpointer a, gconstpointer b)
2304 {
2305 const LttTime *elem_time = (const LttTime*)a;
2306 /* Explicit non const cast */
2307 struct search_result *res = (struct search_result *)b;
2308
2309 if(ltt_time_compare(*elem_time, *(res->time)) < 0) {
2310 /* The usertrace was created before the schedchange */
2311 /* Get larger keys */
2312 return 1;
2313 } else if(ltt_time_compare(*elem_time, *(res->time)) >= 0) {
2314 /* The usertrace was created after the schedchange time */
2315 /* Get smaller keys */
2316 if(res->best) {
2317 if(ltt_time_compare(*elem_time, *res->best) < 0) {
2318 res->best = (LttTime *)elem_time;
2319 }
2320 } else {
2321 res->best = (LttTime *)elem_time;
2322 }
2323 return -1;
2324 }
2325 return 0;
2326 }
2327
2328 static LttvTracefileState *ltt_state_usertrace_find(LttvTraceState *tcs,
2329 guint pid, const LttTime *timestamp)
2330 {
2331 LttvTracefileState *tfs = NULL;
2332 struct search_result res;
2333 /* Find the usertrace associated with a pid and time interval.
2334 * Search in the usertraces by PID (within a hash) and then, for each
2335 * corresponding element of the array, find the first one with creation
2336 * timestamp the lowest, but higher or equal to "timestamp". */
2337 res.time = timestamp;
2338 res.best = NULL;
2339 GTree *usertrace_tree = g_hash_table_lookup(tcs->usertraces,
2340 GUINT_TO_POINTER(pid));
2341 if(usertrace_tree) {
2342 g_tree_search(usertrace_tree, search_usertrace, &res);
2343 if(res.best)
2344 tfs = g_tree_lookup(usertrace_tree, res.best);
2345 }
2346
2347 return tfs;
2348 }
2349
2350 /* Return a new and initialized LttvProcessState structure */
2351
2352 LttvProcessState *
2353 lttv_state_create_process(LttvTraceState *tcs, LttvProcessState *parent,
2354 guint cpu, guint pid, guint tgid, GQuark name, const LttTime *timestamp)
2355 {
2356 LttvProcessState *process = g_new(LttvProcessState, 1);
2357
2358 LttvExecutionState *es;
2359
2360 char buffer[128];
2361
2362 process->pid = pid;
2363 process->tgid = tgid;
2364 process->cpu = cpu;
2365 process->name = name;
2366 process->brand = LTTV_STATE_UNBRANDED;
2367 //process->last_cpu = tfs->cpu_name;
2368 //process->last_cpu_index = ltt_tracefile_num(((LttvTracefileContext*)tfs)->tf);
2369 process->type = LTTV_STATE_USER_THREAD;
2370 process->usertrace = ltt_state_usertrace_find(tcs, pid, timestamp);
2371 process->current_function = 0; //function 0x0 by default.
2372
2373 g_info("Process %u, core %p", process->pid, process);
2374 g_hash_table_insert(tcs->processes, process, process);
2375
2376 if(parent) {
2377 process->ppid = parent->pid;
2378 process->creation_time = *timestamp;
2379 }
2380
2381 /* No parent. This process exists but we are missing all information about
2382 its creation. The birth time is set to zero but we remember the time of
2383 insertion */
2384
2385 else {
2386 process->ppid = 0;
2387 process->creation_time = ltt_time_zero;
2388 }
2389
2390 process->insertion_time = *timestamp;
2391 sprintf(buffer,"%d-%lu.%lu",pid, process->creation_time.tv_sec,
2392 process->creation_time.tv_nsec);
2393 process->pid_time = g_quark_from_string(buffer);
2394 process->cpu = cpu;
2395 process->free_events = 0;
2396 //process->last_cpu = tfs->cpu_name;
2397 //process->last_cpu_index = ltt_tracefile_num(((LttvTracefileContext*)tfs)->tf);
2398 process->execution_stack = g_array_sized_new(FALSE, FALSE,
2399 sizeof(LttvExecutionState), PREALLOCATED_EXECUTION_STACK);
2400 process->execution_stack = g_array_set_size(process->execution_stack, 2);
2401 es = process->state = &g_array_index(process->execution_stack,
2402 LttvExecutionState, 0);
2403 es->t = LTTV_STATE_USER_MODE;
2404 es->n = LTTV_STATE_SUBMODE_NONE;
2405 es->entry = *timestamp;
2406 //g_assert(timestamp->tv_sec != 0);
2407 es->change = *timestamp;
2408 es->cum_cpu_time = ltt_time_zero;
2409 es->s = LTTV_STATE_RUN;
2410
2411 es = process->state = &g_array_index(process->execution_stack,
2412 LttvExecutionState, 1);
2413 es->t = LTTV_STATE_SYSCALL;
2414 es->n = LTTV_STATE_SUBMODE_NONE;
2415 es->entry = *timestamp;
2416 //g_assert(timestamp->tv_sec != 0);
2417 es->change = *timestamp;
2418 es->cum_cpu_time = ltt_time_zero;
2419 es->s = LTTV_STATE_WAIT_FORK;
2420
2421 /* Allocate an empty function call stack. If it's empty, use 0x0. */
2422 process->user_stack = g_array_sized_new(FALSE, FALSE,
2423 sizeof(guint64), 0);
2424
2425 process->fds = g_hash_table_new(g_direct_hash, g_direct_equal);
2426
2427 return process;
2428 }
2429
2430 LttvProcessState *lttv_state_find_process(LttvTraceState *ts, guint cpu,
2431 guint pid)
2432 {
2433 LttvProcessState key;
2434 LttvProcessState *process;
2435
2436 key.pid = pid;
2437 key.cpu = cpu;
2438 process = g_hash_table_lookup(ts->processes, &key);
2439 return process;
2440 }
2441
2442 LttvProcessState *
2443 lttv_state_find_process_or_create(LttvTraceState *ts, guint cpu, guint pid,
2444 const LttTime *timestamp)
2445 {
2446 LttvProcessState *process = lttv_state_find_process(ts, cpu, pid);
2447 LttvExecutionState *es;
2448
2449 /* Put ltt_time_zero creation time for unexisting processes */
2450 if(unlikely(process == NULL)) {
2451 process = lttv_state_create_process(ts,
2452 NULL, cpu, pid, 0, LTTV_STATE_UNNAMED, timestamp);
2453 /* We are not sure is it's a kernel thread or normal thread, put the
2454 * bottom stack state to unknown */
2455 process->execution_stack =
2456 g_array_set_size(process->execution_stack, 1);
2457 process->state = es =
2458 &g_array_index(process->execution_stack, LttvExecutionState, 0);
2459 es->t = LTTV_STATE_MODE_UNKNOWN;
2460 es->s = LTTV_STATE_UNNAMED;
2461 }
2462 return process;
2463 }
2464
2465 /* FIXME : this function should be called when we receive an event telling that
2466 * release_task has been called in the kernel. In happens generally when
2467 * the parent waits for its child termination, but may also happens in special
2468 * cases in the child's exit : when the parent ignores its children SIGCCHLD or
2469 * has the flag SA_NOCLDWAIT. It can also happen when the child is part
2470 * of a killed thread group, but isn't the leader.
2471 */
2472 static int exit_process(LttvTracefileState *tfs, LttvProcessState *process)
2473 {
2474 LttvTraceState *ts = LTTV_TRACE_STATE(tfs->parent.t_context);
2475 LttvProcessState key;
2476
2477 /* Wait for both schedule with exit dead and process free to happen.
2478 * They can happen in any order. */
2479 if (++(process->free_events) < 2)
2480 return 0;
2481
2482 key.pid = process->pid;
2483 key.cpu = process->cpu;
2484 g_hash_table_remove(ts->processes, &key);
2485 g_array_free(process->execution_stack, TRUE);
2486 g_array_free(process->user_stack, TRUE);
2487
2488 /* the following also clears the content */
2489 g_hash_table_destroy(process->fds);
2490
2491 g_free(process);
2492 return 1;
2493 }
2494
2495
2496 static void free_process_state(gpointer key, gpointer value,gpointer user_data)
2497 {
2498 g_array_free(((LttvProcessState *)value)->execution_stack, TRUE);
2499 g_array_free(((LttvProcessState *)value)->user_stack, TRUE);
2500
2501 /* the following also clears the content */
2502 g_hash_table_destroy(((LttvProcessState *)value)->fds);
2503
2504 g_free(value);
2505 }
2506
2507
2508 static void lttv_state_free_process_table(GHashTable *processes)
2509 {
2510 g_hash_table_foreach(processes, free_process_state, NULL);
2511 g_hash_table_destroy(processes);
2512 }
2513
2514
2515 static gboolean syscall_entry(void *hook_data, void *call_data)
2516 {
2517 LttvTracefileState *s = (LttvTracefileState *)call_data;
2518 guint cpu = s->cpu;
2519 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
2520 LttvProcessState *process = ts->running_process[cpu];
2521 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2522 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2523 struct marker_field *f = lttv_trace_get_hook_field(th, 0);
2524 LttvExecutionSubmode submode;
2525 LttvNameTables *nt = ((LttvTraceState *)(s->parent.t_context))->name_tables;
2526
2527 guint syscall = ltt_event_get_unsigned(e, f);
2528 expand_syscall_table(ts, syscall);
2529 submode = nt->syscall_names[syscall];
2530 /* There can be no system call from PID 0 : unknown state */
2531 if(process->pid != 0)
2532 push_state(s, LTTV_STATE_SYSCALL, submode);
2533 return FALSE;
2534 }
2535
2536
2537 static gboolean syscall_exit(void *hook_data, void *call_data)
2538 {
2539 LttvTracefileState *s = (LttvTracefileState *)call_data;
2540 guint cpu = s->cpu;
2541 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
2542 LttvProcessState *process = ts->running_process[cpu];
2543
2544 /* There can be no system call from PID 0 : unknown state */
2545 if(process->pid != 0)
2546 pop_state(s, LTTV_STATE_SYSCALL);
2547 return FALSE;
2548 }
2549
2550
2551 static gboolean trap_entry(void *hook_data, void *call_data)
2552 {
2553 LttvTracefileState *s = (LttvTracefileState *)call_data;
2554 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2555 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2556 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2557 struct marker_field *f = lttv_trace_get_hook_field(th, 0);
2558 LttvNameTables *nt = ((LttvTraceState *)(s->parent.t_context))->name_tables;
2559
2560 LttvExecutionSubmode submode;
2561
2562 guint64 trap = ltt_event_get_long_unsigned(e, f);
2563
2564 expand_trap_table(ts, trap);
2565
2566 submode = nt->trap_names[trap];
2567
2568 push_state(s, LTTV_STATE_TRAP, submode);
2569
2570 /* update cpu status */
2571 cpu_push_mode(s->cpu_state, LTTV_CPU_TRAP);
2572
2573 /* update trap status */
2574 g_array_append_val(s->cpu_state->trap_stack, trap);
2575 ts->trap_states[trap].running++;
2576
2577 return FALSE;
2578 }
2579
2580 static gboolean trap_exit(void *hook_data, void *call_data)
2581 {
2582 LttvTracefileState *s = (LttvTracefileState *)call_data;
2583 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2584
2585 pop_state(s, LTTV_STATE_TRAP);
2586
2587 /* update cpu status */
2588 cpu_pop_mode(s->cpu_state);
2589
2590 /* update trap status */
2591 if (s->cpu_state->trap_stack->len > 0) {
2592 gint last = g_array_index(s->cpu_state->trap_stack, gint, s->cpu_state->trap_stack->len-1);
2593 if(ts->trap_states[last].running)
2594 ts->trap_states[last].running--;
2595 g_array_remove_index(s->cpu_state->trap_stack, s->cpu_state->trap_stack->len-1);
2596 }
2597 return FALSE;
2598 }
2599
2600 static gboolean irq_entry(void *hook_data, void *call_data)
2601 {
2602 LttvTracefileState *s = (LttvTracefileState *)call_data;
2603 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2604 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2605 //guint8 ev_id = ltt_event_eventtype_id(e);
2606 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2607 struct marker_field *f = lttv_trace_get_hook_field(th, 0);
2608 LttvNameTables *nt = ((LttvTraceState *)(s->parent.t_context))->name_tables;
2609
2610 LttvExecutionSubmode submode;
2611 guint64 irq = ltt_event_get_long_unsigned(e, f);
2612
2613 expand_irq_table(ts, irq);
2614
2615 submode = nt->irq_names[irq];
2616
2617 /* Do something with the info about being in user or system mode when int? */
2618 push_state(s, LTTV_STATE_IRQ, submode);
2619
2620 /* update cpu status */
2621 cpu_push_mode(s->cpu_state, LTTV_CPU_IRQ);
2622
2623 /* update irq status */
2624 g_array_append_val(s->cpu_state->irq_stack, irq);
2625 irq_push_mode(&ts->irq_states[irq], LTTV_IRQ_BUSY);
2626
2627 return FALSE;
2628 }
2629
2630 static gboolean soft_irq_exit(void *hook_data, void *call_data)
2631 {
2632 LttvTracefileState *s = (LttvTracefileState *)call_data;
2633 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2634
2635 pop_state(s, LTTV_STATE_SOFT_IRQ);
2636
2637 /* update cpu status */
2638 cpu_pop_mode(s->cpu_state);
2639
2640 /* update softirq status */
2641 if (s->cpu_state->softirq_stack->len > 0) {
2642 gint last = g_array_index(s->cpu_state->softirq_stack, gint, s->cpu_state->softirq_stack->len-1);
2643 if(ts->soft_irq_states[last].running)
2644 ts->soft_irq_states[last].running--;
2645 g_array_remove_index(s->cpu_state->softirq_stack, s->cpu_state->softirq_stack->len-1);
2646 }
2647 return FALSE;
2648 }
2649
2650 static gboolean irq_exit(void *hook_data, void *call_data)
2651 {
2652 LttvTracefileState *s = (LttvTracefileState *)call_data;
2653 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2654
2655 pop_state(s, LTTV_STATE_IRQ);
2656
2657 /* update cpu status */
2658 cpu_pop_mode(s->cpu_state);
2659
2660 /* update irq status */
2661 if (s->cpu_state->irq_stack->len > 0) {
2662 gint last = g_array_index(s->cpu_state->irq_stack, gint, s->cpu_state->irq_stack->len-1);
2663 g_array_remove_index(s->cpu_state->irq_stack, s->cpu_state->irq_stack->len-1);
2664 irq_pop_mode(&ts->irq_states[last]);
2665 }
2666
2667 return FALSE;
2668 }
2669
2670 static gboolean soft_irq_raise(void *hook_data, void *call_data)
2671 {
2672 LttvTracefileState *s = (LttvTracefileState *)call_data;
2673 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2674 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2675 //guint8 ev_id = ltt_event_eventtype_id(e);
2676 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2677 struct marker_field *f = lttv_trace_get_hook_field(th, 0);
2678 LttvNameTables *nt = ((LttvTraceState *)(s->parent.t_context))->name_tables;
2679
2680 LttvExecutionSubmode submode;
2681 guint64 softirq = ltt_event_get_long_unsigned(e, f);
2682 guint64 nb_softirqs = nt->nb_soft_irqs;
2683
2684 if(softirq < nb_softirqs) {
2685 submode = nt->soft_irq_names[softirq];
2686 } else {
2687 /* Fixup an incomplete irq table */
2688 GString *string = g_string_new("");
2689 g_string_printf(string, "softirq %" PRIu64, softirq);
2690 submode = g_quark_from_string(string->str);
2691 g_string_free(string, TRUE);
2692 }
2693
2694 /* update softirq status */
2695 /* a soft irq raises are not cumulative */
2696 ts->soft_irq_states[softirq].pending=1;
2697
2698 return FALSE;
2699 }
2700
2701 static gboolean soft_irq_entry(void *hook_data, void *call_data)
2702 {
2703 LttvTracefileState *s = (LttvTracefileState *)call_data;
2704 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2705 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2706 //guint8 ev_id = ltt_event_eventtype_id(e);
2707 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2708 struct marker_field *f = lttv_trace_get_hook_field(th, 0);
2709 LttvExecutionSubmode submode;
2710 guint64 softirq = ltt_event_get_long_unsigned(e, f);
2711 expand_soft_irq_table(ts, softirq);
2712 LttvNameTables *nt = ((LttvTraceState *)(s->parent.t_context))->name_tables;
2713 submode = nt->soft_irq_names[softirq];
2714
2715 /* Do something with the info about being in user or system mode when int? */
2716 push_state(s, LTTV_STATE_SOFT_IRQ, submode);
2717
2718 /* update cpu status */
2719 cpu_push_mode(s->cpu_state, LTTV_CPU_SOFT_IRQ);
2720
2721 /* update softirq status */
2722 g_array_append_val(s->cpu_state->softirq_stack, softirq);
2723 if(ts->soft_irq_states[softirq].pending)
2724 ts->soft_irq_states[softirq].pending--;
2725 ts->soft_irq_states[softirq].running++;
2726
2727 return FALSE;
2728 }
2729
2730 static gboolean enum_interrupt(void *hook_data, void *call_data)
2731 {
2732 LttvTracefileState *s = (LttvTracefileState *)call_data;
2733 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2734 LttvNameTables *nt = ts->name_tables;
2735 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2736 //guint8 ev_id = ltt_event_eventtype_id(e);
2737 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2738
2739 GQuark action = g_quark_from_string(ltt_event_get_string(e,
2740 lttv_trace_get_hook_field(th, 0)));
2741 guint irq = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 1));
2742
2743 expand_irq_table(ts, irq);
2744 nt->irq_names[irq] = action;
2745
2746 return FALSE;
2747 }
2748
2749
2750 static gboolean bdev_request_issue(void *hook_data, void *call_data)
2751 {
2752 LttvTracefileState *s = (LttvTracefileState *)call_data;
2753 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2754 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2755 //guint8 ev_id = ltt_event_eventtype_id(e);
2756 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2757
2758 guint major = ltt_event_get_long_unsigned(e,
2759 lttv_trace_get_hook_field(th, 0));
2760 guint minor = ltt_event_get_long_unsigned(e,
2761 lttv_trace_get_hook_field(th, 1));
2762 guint oper = ltt_event_get_long_unsigned(e,
2763 lttv_trace_get_hook_field(th, 2));
2764 guint16 devcode = MKDEV(major,minor);
2765
2766 /* have we seen this block device before? */
2767 gpointer bdev = get_hashed_bdevstate(ts, devcode);
2768
2769 if(oper == 0)
2770 bdev_push_mode(bdev, LTTV_BDEV_BUSY_READING);
2771 else
2772 bdev_push_mode(bdev, LTTV_BDEV_BUSY_WRITING);
2773
2774 return FALSE;
2775 }
2776
2777 static gboolean bdev_request_complete(void *hook_data, void *call_data)
2778 {
2779 LttvTracefileState *s = (LttvTracefileState *)call_data;
2780 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
2781 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2782 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2783
2784 guint major = ltt_event_get_long_unsigned(e,
2785 lttv_trace_get_hook_field(th, 0));
2786 guint minor = ltt_event_get_long_unsigned(e,
2787 lttv_trace_get_hook_field(th, 1));
2788 //guint oper = ltt_event_get_long_unsigned(e,
2789 // lttv_trace_get_hook_field(th, 2));
2790 guint16 devcode = MKDEV(major,minor);
2791
2792 /* have we seen this block device before? */
2793 gpointer bdev = get_hashed_bdevstate(ts, devcode);
2794
2795 /* update block device */
2796 bdev_pop_mode(bdev);
2797
2798 return FALSE;
2799 }
2800
2801 static void push_function(LttvTracefileState *tfs, guint64 funcptr)
2802 {
2803 guint64 *new_func;
2804
2805 LttvTraceState *ts = (LttvTraceState*)tfs->parent.t_context;
2806 guint cpu = tfs->cpu;
2807 LttvProcessState *process = ts->running_process[cpu];
2808
2809 guint depth = process->user_stack->len;
2810
2811 process->user_stack =
2812 g_array_set_size(process->user_stack, depth + 1);
2813
2814 new_func = &g_array_index(process->user_stack, guint64, depth);
2815 *new_func = funcptr;
2816 process->current_function = funcptr;
2817 }
2818
2819 static void pop_function(LttvTracefileState *tfs, guint64 funcptr)
2820 {
2821 guint cpu = tfs->cpu;
2822 LttvTraceState *ts = (LttvTraceState*)tfs->parent.t_context;
2823 LttvProcessState *process = ts->running_process[cpu];
2824
2825 if(process->current_function != funcptr){
2826 g_info("Different functions (%lu.%09lu): ignore it\n",
2827 tfs->parent.timestamp.tv_sec, tfs->parent.timestamp.tv_nsec);
2828 g_info("process state has %" PRIu64 " when pop_function is %" PRIu64 "\n",
2829 process->current_function, funcptr);
2830 g_info("{ %u, %u, %s, %s, %s }\n",
2831 process->pid,
2832 process->ppid,
2833 g_quark_to_string(process->name),
2834 g_quark_to_string(process->brand),
2835 g_quark_to_string(process->state->s));
2836 return;
2837 }
2838 guint depth = process->user_stack->len;
2839
2840 if(depth == 0){
2841 g_info("Trying to pop last function on stack (%lu.%09lu): ignore it\n",
2842 tfs->parent.timestamp.tv_sec, tfs->parent.timestamp.tv_nsec);
2843 return;
2844 }
2845
2846 process->user_stack =
2847 g_array_set_size(process->user_stack, depth - 1);
2848 process->current_function =
2849 g_array_index(process->user_stack, guint64, depth - 2);
2850 }
2851
2852
2853 static gboolean function_entry(void *hook_data, void *call_data)
2854 {
2855 LttvTracefileState *s = (LttvTracefileState *)call_data;
2856 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2857 //guint8 ev_id = ltt_event_eventtype_id(e);
2858 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2859 struct marker_field *f = lttv_trace_get_hook_field(th, 0);
2860 guint64 funcptr = ltt_event_get_long_unsigned(e, f);
2861
2862 push_function(s, funcptr);
2863 return FALSE;
2864 }
2865
2866 static gboolean function_exit(void *hook_data, void *call_data)
2867 {
2868 LttvTracefileState *s = (LttvTracefileState *)call_data;
2869 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2870 //guint8 ev_id = ltt_event_eventtype_id(e);
2871 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2872 struct marker_field *f = lttv_trace_get_hook_field(th, 0);
2873 guint64 funcptr = ltt_event_get_long_unsigned(e, f);
2874
2875 pop_function(s, funcptr);
2876 return FALSE;
2877 }
2878
2879 static gboolean dump_syscall(void *hook_data, void *call_data)
2880 {
2881 LttvTracefileState *s = (LttvTracefileState *)call_data;
2882 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
2883 LttvNameTables *nt = ts->name_tables;
2884 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2885 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2886 guint id;
2887 guint64 address;
2888 char *symbol;
2889
2890 id = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 0));
2891 address = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 1));
2892 symbol = ltt_event_get_string(e, lttv_trace_get_hook_field(th, 2));
2893
2894 expand_syscall_table(ts, id);
2895 nt->syscall_names[id] = g_quark_from_string(symbol);
2896
2897 return FALSE;
2898 }
2899
2900 static gboolean dump_kprobe(void *hook_data, void *call_data)
2901 {
2902 LttvTracefileState *s = (LttvTracefileState *)call_data;
2903 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
2904 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2905 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2906 guint64 ip;
2907 char *symbol;
2908
2909 ip = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 0));
2910 symbol = ltt_event_get_string(e, lttv_trace_get_hook_field(th, 1));
2911
2912 expand_kprobe_table(ts, ip, symbol);
2913
2914 return FALSE;
2915 }
2916
2917 static gboolean dump_softirq(void *hook_data, void *call_data)
2918 {
2919 LttvTracefileState *s = (LttvTracefileState *)call_data;
2920 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
2921 LttvNameTables *nt = ts->name_tables;
2922 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2923 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2924 guint id;
2925 guint64 address;
2926 char *symbol;
2927
2928 id = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 0));
2929 address = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 1));
2930 symbol = ltt_event_get_string(e, lttv_trace_get_hook_field(th, 2));
2931
2932 expand_soft_irq_table(ts, id);
2933 nt->soft_irq_names[id] = g_quark_from_string(symbol);
2934
2935 return FALSE;
2936 }
2937
2938 static gboolean sched_try_wakeup(void *hook_data, void *call_data)
2939 {
2940 LttvTracefileState *s = (LttvTracefileState *)call_data;
2941 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2942 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2943 LttvProcessState *process;
2944 gint woken_pid;
2945 guint woken_cpu;
2946
2947 woken_pid = ltt_event_get_int(e, lttv_trace_get_hook_field(th, 0));
2948 woken_cpu = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 1));
2949
2950 process = lttv_state_find_process_or_create(
2951 (LttvTraceState*)s->parent.t_context,
2952 woken_cpu, woken_pid,
2953 &s->parent.timestamp);
2954 process->state->s = LTTV_STATE_WAIT_CPU;
2955 process->state->change = s->parent.timestamp;
2956
2957 g_debug("Wakeup: process %d on CPU %u\n", woken_pid, woken_cpu);
2958
2959 return FALSE;
2960 }
2961
2962 static gboolean schedchange(void *hook_data, void *call_data)
2963 {
2964 LttvTracefileState *s = (LttvTracefileState *)call_data;
2965 guint cpu = s->cpu;
2966 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
2967 LttvProcessState *process = ts->running_process[cpu];
2968 //LttvProcessState *old_process = ts->running_process[cpu];
2969
2970 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
2971 LttvTraceHook *th = (LttvTraceHook *)hook_data;
2972 guint pid_in, pid_out;
2973 gint64 state_out;
2974
2975 pid_out = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 0));
2976 pid_in = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 1));
2977 state_out = ltt_event_get_long_int(e, lttv_trace_get_hook_field(th, 2));
2978
2979 if(likely(process != NULL)) {
2980
2981 /* We could not know but it was not the idle process executing.
2982 This should only happen at the beginning, before the first schedule
2983 event, and when the initial information (current process for each CPU)
2984 is missing. It is not obvious how we could, after the fact, compensate
2985 the wrongly attributed statistics. */
2986
2987 //This test only makes sense once the state is known and if there is no
2988 //missing events. We need to silently ignore schedchange coming after a
2989 //process_free, or it causes glitches. (FIXME)
2990 //if(unlikely(process->pid != pid_out)) {
2991 // g_assert(process->pid == 0);
2992 //}
2993 if(process->pid == 0
2994 && process->state->t == LTTV_STATE_MODE_UNKNOWN) {
2995 if(pid_out == 0) {
2996 /* Scheduling out of pid 0 at beginning of the trace :
2997 * we know for sure it is in syscall mode at this point. */
2998 g_assert(process->execution_stack->len == 1);
2999 process->state->t = LTTV_STATE_SYSCALL;
3000 process->state->s = LTTV_STATE_WAIT;
3001 process->state->change = s->parent.timestamp;
3002 process->state->entry = s->parent.timestamp;
3003 }
3004 } else {
3005 if(unlikely(process->state->s == LTTV_STATE_EXIT)) {
3006 process->state->s = LTTV_STATE_ZOMBIE;
3007 process->state->change = s->parent.timestamp;
3008 } else {
3009 if(unlikely(state_out == 0)) process->state->s = LTTV_STATE_WAIT_CPU;
3010 else process->state->s = LTTV_STATE_WAIT;
3011 process->state->change = s->parent.timestamp;
3012 }
3013
3014 if(state_out == 32 || state_out == 64) { /* EXIT_DEAD || TASK_DEAD */
3015 /* see sched.h for states */
3016 if (!exit_process(s, process)) {
3017 process->state->s = LTTV_STATE_DEAD;
3018 process->state->change = s->parent.timestamp;
3019 }
3020 }
3021 }
3022 }
3023 process = ts->running_process[cpu] =
3024 lttv_state_find_process_or_create(
3025 (LttvTraceState*)s->parent.t_context,
3026 cpu, pid_in,
3027 &s->parent.timestamp);
3028 process->state->s = LTTV_STATE_RUN;
3029 process->cpu = cpu;
3030 if(process->usertrace)
3031 process->usertrace->cpu = cpu;
3032 // process->last_cpu_index = ltt_tracefile_num(((LttvTracefileContext*)s)->tf);
3033 process->state->change = s->parent.timestamp;
3034
3035 /* update cpu status */
3036 if(pid_in == 0)
3037 /* going to idle task */
3038 cpu_set_base_mode(s->cpu_state, LTTV_CPU_IDLE);
3039 else {
3040 /* scheduling a real task.
3041 * we must be careful here:
3042 * if we just schedule()'ed to a process that is
3043 * in a trap, we must put the cpu in trap mode
3044 */
3045 cpu_set_base_mode(s->cpu_state, LTTV_CPU_BUSY);
3046 if(process->state->t == LTTV_STATE_TRAP)
3047 cpu_push_mode(s->cpu_state, LTTV_CPU_TRAP);
3048 }
3049
3050 return FALSE;
3051 }
3052
3053 static gboolean process_fork(void *hook_data, void *call_data)
3054 {
3055 LttvTracefileState *s = (LttvTracefileState *)call_data;
3056 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3057 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3058 guint parent_pid;
3059 guint child_pid; /* In the Linux Kernel, there is one PID per thread. */
3060 guint child_tgid; /* tgid in the Linux kernel is the "real" POSIX PID. */
3061 //LttvProcessState *zombie_process;
3062 guint cpu = s->cpu;
3063 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3064 LttvProcessState *process = ts->running_process[cpu];
3065 LttvProcessState *child_process;
3066 struct marker_field *f;
3067
3068 /* Parent PID */
3069 parent_pid = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 0));
3070
3071 /* Child PID */
3072 child_pid = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 1));
3073 s->parent.target_pid = child_pid;
3074
3075 /* Child TGID */
3076 f = lttv_trace_get_hook_field(th, 2);
3077 if (likely(f))
3078 child_tgid = ltt_event_get_unsigned(e, f);
3079 else
3080 child_tgid = 0;
3081
3082 /* Mathieu : it seems like the process might have been scheduled in before the
3083 * fork, and, in a rare case, might be the current process. This might happen
3084 * in a SMP case where we don't have enough precision on the clocks.
3085 *
3086 * Test reenabled after precision fixes on time. (Mathieu) */
3087 #if 0
3088 zombie_process = lttv_state_find_process(ts, ANY_CPU, child_pid);
3089
3090 if(unlikely(zombie_process != NULL)) {
3091 /* Reutilisation of PID. Only now we are sure that the old PID
3092 * has been released. FIXME : should know when release_task happens instead.
3093 */
3094 guint num_cpus = ltt_trace_get_num_cpu(ts->parent.t);
3095 guint i;
3096 for(i=0; i< num_cpus; i++) {
3097 g_assert(zombie_process != ts->running_process[i]);
3098 }
3099
3100 exit_process(s, zombie_process);
3101 }
3102 #endif //0
3103 g_assert(process->pid != child_pid);
3104 // FIXME : Add this test in the "known state" section
3105 // g_assert(process->pid == parent_pid);
3106 child_process = lttv_state_find_process(ts, ANY_CPU, child_pid);
3107 if(child_process == NULL) {
3108 child_process = lttv_state_create_process(ts, process, cpu,
3109 child_pid, child_tgid,
3110 LTTV_STATE_UNNAMED, &s->parent.timestamp);
3111 } else {
3112 /* The process has already been created : due to time imprecision between
3113 * multiple CPUs : it has been scheduled in before creation. Note that we
3114 * shouldn't have this kind of imprecision.
3115 *
3116 * Simply put a correct parent.
3117 */
3118 g_error("Process %u has been created at [%lu.%09lu] "
3119 "and inserted at [%lu.%09lu] before \n"
3120 "fork on cpu %u[%lu.%09lu].\n"
3121 "Probably an unsynchronized TSC problem on the traced machine.",
3122 child_pid,
3123 child_process->creation_time.tv_sec,
3124 child_process->creation_time.tv_nsec,
3125 child_process->insertion_time.tv_sec,
3126 child_process->insertion_time.tv_nsec,
3127 cpu, ltt_event_time(e).tv_sec, ltt_event_time(e).tv_nsec);
3128 //g_assert(0); /* This is a problematic case : the process has been created
3129 // before the fork event */
3130 child_process->ppid = process->pid;
3131 child_process->tgid = child_tgid;
3132 }
3133 g_assert(child_process->name == LTTV_STATE_UNNAMED);
3134 child_process->name = process->name;
3135 child_process->brand = process->brand;
3136
3137 return FALSE;
3138 }
3139
3140 /* We stamp a newly created process as kernel_thread.
3141 * The thread should not be running yet. */
3142 static gboolean process_kernel_thread(void *hook_data, void *call_data)
3143 {
3144 LttvTracefileState *s = (LttvTracefileState *)call_data;
3145 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3146 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3147 guint pid;
3148 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3149 LttvProcessState *process;
3150 LttvExecutionState *es;
3151
3152 /* PID */
3153 pid = (guint)ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 0));
3154 s->parent.target_pid = pid;
3155
3156 process = lttv_state_find_process_or_create(ts, ANY_CPU, pid,
3157 &ltt_time_zero);
3158 if (process->state->s != LTTV_STATE_DEAD) {
3159 process->execution_stack =
3160 g_array_set_size(process->execution_stack, 1);
3161 es = process->state =
3162 &g_array_index(process->execution_stack, LttvExecutionState, 0);
3163 es->t = LTTV_STATE_SYSCALL;
3164 }
3165 process->type = LTTV_STATE_KERNEL_THREAD;
3166
3167 return FALSE;
3168 }
3169
3170 static gboolean process_exit(void *hook_data, void *call_data)
3171 {
3172 LttvTracefileState *s = (LttvTracefileState *)call_data;
3173 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3174 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3175 guint pid;
3176 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3177 LttvProcessState *process; // = ts->running_process[cpu];
3178
3179 pid = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 0));
3180 s->parent.target_pid = pid;
3181
3182 // FIXME : Add this test in the "known state" section
3183 // g_assert(process->pid == pid);
3184
3185 process = lttv_state_find_process(ts, ANY_CPU, pid);
3186 if(likely(process != NULL)) {
3187 process->state->s = LTTV_STATE_EXIT;
3188 }
3189 return FALSE;
3190 }
3191
3192 static gboolean process_free(void *hook_data, void *call_data)
3193 {
3194 LttvTracefileState *s = (LttvTracefileState *)call_data;
3195 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3196 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3197 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3198 guint release_pid;
3199 LttvProcessState *process;
3200
3201 /* PID of the process to release */
3202 release_pid = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 0));
3203 s->parent.target_pid = release_pid;
3204
3205 g_assert(release_pid != 0);
3206
3207 process = lttv_state_find_process(ts, ANY_CPU, release_pid);
3208 if(likely(process != NULL))
3209 exit_process(s, process);
3210 return FALSE;
3211 //DISABLED
3212 if(likely(process != NULL)) {
3213 /* release_task is happening at kernel level : we can now safely release
3214 * the data structure of the process */
3215 //This test is fun, though, as it may happen that
3216 //at time t : CPU 0 : process_free
3217 //at time t+150ns : CPU 1 : schedule out
3218 //Clearly due to time imprecision, we disable it. (Mathieu)
3219 //If this weird case happen, we have no choice but to put the
3220 //Currently running process on the cpu to 0.
3221 //I re-enable it following time precision fixes. (Mathieu)
3222 //Well, in the case where an process is freed by a process on another CPU
3223 //and still scheduled, it happens that this is the schedchange that will
3224 //drop the last reference count. Do not free it here!
3225 guint num_cpus = ltt_trace_get_num_cpu(ts->parent.t);
3226 guint i;
3227 for(i=0; i< num_cpus; i++) {
3228 //g_assert(process != ts->running_process[i]);
3229 if(process == ts->running_process[i]) {
3230 //ts->running_process[i] = lttv_state_find_process(ts, i, 0);
3231 break;
3232 }
3233 }
3234 if(i == num_cpus) /* process is not scheduled */
3235 exit_process(s, process);
3236 }
3237
3238 return FALSE;
3239 }
3240
3241
3242 static gboolean process_exec(void *hook_data, void *call_data)
3243 {
3244 LttvTracefileState *s = (LttvTracefileState *)call_data;
3245 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3246 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3247 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3248 //gchar *name;
3249 guint cpu = s->cpu;
3250 LttvProcessState *process = ts->running_process[cpu];
3251
3252 #if 0//how to use a sequence that must be transformed in a string
3253 /* PID of the process to release */
3254 guint64 name_len = ltt_event_field_element_number(e,
3255 lttv_trace_get_hook_field(th, 0));
3256 //name = ltt_event_get_string(e, lttv_trace_get_hook_field(th, 0));
3257 LttField *child = ltt_event_field_element_select(e,
3258 lttv_trace_get_hook_field(th, 0), 0);
3259 gchar *name_begin =
3260 (gchar*)(ltt_event_data(e)+ltt_event_field_offset(e, child));
3261 gchar *null_term_name = g_new(gchar, name_len+1);
3262 memcpy(null_term_name, name_begin, name_len);
3263 null_term_name[name_len] = '\0';
3264 process->name = g_quark_from_string(null_term_name);
3265 #endif //0
3266
3267 process->name = g_quark_from_string(ltt_event_get_string(e,
3268 lttv_trace_get_hook_field(th, 0)));
3269 process->brand = LTTV_STATE_UNBRANDED;
3270 //g_free(null_term_name);
3271 return FALSE;
3272 }
3273
3274 static gboolean thread_brand(void *hook_data, void *call_data)
3275 {
3276 LttvTracefileState *s = (LttvTracefileState *)call_data;
3277 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3278 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3279 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3280 gchar *name;
3281 guint cpu = s->cpu;
3282 LttvProcessState *process = ts->running_process[cpu];
3283
3284 name = ltt_event_get_string(e, lttv_trace_get_hook_field(th, 0));
3285 process->brand = g_quark_from_string(name);
3286
3287 return FALSE;
3288 }
3289
3290 static gboolean fs_open(void *hook_data, void *call_data)
3291 {
3292 LttvTracefileState *s = (LttvTracefileState *)call_data;
3293 LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
3294 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3295 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3296 struct marker_field *f;
3297 guint cpu = s->cpu;
3298 int fd;
3299 char *filename;
3300 LttvProcessState *process = ts->running_process[cpu];
3301
3302 f = lttv_trace_get_hook_field(th, 0);
3303 fd = ltt_event_get_int(e, f);
3304
3305 f = lttv_trace_get_hook_field(th, 1);
3306 filename = ltt_event_get_string(e, f);
3307
3308 g_hash_table_insert(process->fds, (gpointer)(long)fd,
3309 (gpointer)(unsigned long)g_quark_from_string(filename));
3310
3311 return FALSE;
3312 }
3313
3314 static void fix_process(gpointer key, gpointer value,
3315 gpointer user_data)
3316 {
3317 LttvProcessState *process;
3318 LttvExecutionState *es;
3319 process = (LttvProcessState *)value;
3320 LttTime *timestamp = (LttTime*)user_data;
3321
3322 if(process->type == LTTV_STATE_KERNEL_THREAD) {
3323 es = &g_array_index(process->execution_stack, LttvExecutionState, 0);
3324 if(es->t == LTTV_STATE_MODE_UNKNOWN) {
3325 es->t = LTTV_STATE_SYSCALL;
3326 es->n = LTTV_STATE_SUBMODE_NONE;
3327 es->entry = *timestamp;
3328 es->change = *timestamp;
3329 es->cum_cpu_time = ltt_time_zero;
3330 if(es->s == LTTV_STATE_UNNAMED)
3331 es->s = LTTV_STATE_WAIT;
3332 }
3333 } else {
3334 es = &g_array_index(process->execution_stack, LttvExecutionState, 0);
3335 if(es->t == LTTV_STATE_MODE_UNKNOWN) {
3336 es->t = LTTV_STATE_USER_MODE;
3337 es->n = LTTV_STATE_SUBMODE_NONE;
3338 es->entry = *timestamp;
3339 //g_assert(timestamp->tv_sec != 0);
3340 es->change = *timestamp;
3341 es->cum_cpu_time = ltt_time_zero;
3342 if(es->s == LTTV_STATE_UNNAMED)
3343 es->s = LTTV_STATE_RUN;
3344
3345 if(process->execution_stack->len == 1) {
3346 /* Still in bottom unknown mode, means never did a system call
3347 * May be either in user mode, syscall mode, running or waiting.*/
3348 /* FIXME : we may be tagging syscall mode when being user mode */
3349 process->execution_stack =
3350 g_array_set_size(process->execution_stack, 2);
3351 es = process->state = &g_array_index(process->execution_stack,
3352 LttvExecutionState, 1);
3353 es->t = LTTV_STATE_SYSCALL;
3354 es->n = LTTV_STATE_SUBMODE_NONE;
3355 es->entry = *timestamp;
3356 //g_assert(timestamp->tv_sec != 0);
3357 es->change = *timestamp;
3358 es->cum_cpu_time = ltt_time_zero;
3359 if(es->s == LTTV_STATE_WAIT_FORK)
3360 es->s = LTTV_STATE_WAIT;
3361 }
3362 }
3363 }
3364 }
3365
3366 static gboolean statedump_end(void *hook_data, void *call_data)
3367 {
3368 LttvTracefileState *s = (LttvTracefileState *)call_data;
3369 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3370 LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
3371 //LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3372 //LttvTraceHook *th = (LttvTraceHook *)hook_data;
3373
3374 /* For all processes */
3375 /* if kernel thread, if stack[0] is unknown, set to syscall mode, wait */
3376 /* else, if stack[0] is unknown, set to user mode, running */
3377
3378 g_hash_table_foreach(ts->processes, fix_process, &tfc->timestamp);
3379
3380 return FALSE;
3381 }
3382
3383 static gboolean enum_process_state(void *hook_data, void *call_data)
3384 {
3385 LttvTracefileState *s = (LttvTracefileState *)call_data;
3386 LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
3387 //It's slow : optimise later by doing this before reading trace.
3388 LttvTraceHook *th = (LttvTraceHook *)hook_data;
3389 guint parent_pid;
3390 guint pid;
3391 guint tgid;
3392 gchar * command;
3393 guint cpu = s->cpu;
3394 LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
3395 LttvProcessState *process = ts->running_process[cpu];
3396 LttvProcessState *parent_process;
3397 struct marker_field *f;
3398 GQuark type, mode, submode, status;
3399 LttvExecutionState *es;
3400 guint i, nb_cpus;
3401
3402 /* PID */
3403 pid = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 0));
3404 s->parent.target_pid = pid;
3405
3406 /* Parent PID */
3407 parent_pid = ltt_event_get_unsigned(e, lttv_trace_get_hook_field(th, 1));
3408
3409 /* Command name */
3410 command = ltt_event_get_string(e, lttv_trace_get_hook_field(th, 2));
3411
3412 /* type */
3413 f = lttv_trace_get_hook_field(th, 3);
3414 type = ltt_enum_string_get(f, ltt_event_get_unsigned(e, f));
3415
3416 //FIXME: type is rarely used, enum must match possible types.
3417
3418 /* mode */
3419 f = lttv_trace_get_hook_field(th, 4);
3420 mode = ltt_enum_string_get(f,ltt_event_get_unsigned(e, f));
3421
3422 /* submode */
3423 f = lttv_trace_get_hook_field(th, 5);
3424 submode = ltt_enum_string_get(f, ltt_event_get_unsigned(e, f));
3425
3426 /* status */
3427 f = lttv_trace_get_hook_field(th, 6);
3428 status = ltt_enum_string_get(f, ltt_event_get_unsigned(e, f));
3429
3430 /* TGID */
3431 f = lttv_trace_get_hook_field(th, 7);
3432 if(f)
3433 tgid = ltt_event_get_unsigned(e, f);
3434 else
3435 tgid = 0;
3436
3437 if(pid == 0) {
3438 nb_cpus = ltt_trace_get_num_cpu(ts->parent.t);
3439 for(i=0; i<nb_cpus; i++) {
3440 process = lttv_state_find_process(ts, i, pid);
3441 g_assert(process != NULL);
3442
3443 process->ppid = parent_pid;
3444 process->tgid = tgid;
3445 process->name = g_quark_from_string(command);
3446 es =
3447 &g_array_index(process->execution_stack, LttvExecutionState, 0);
3448 process->type = LTTV_STATE_KERNEL_THREAD;
3449 }
3450
3451 } else {
3452 /* The process might exist if a process was forked while performing the
3453 * state dump. */
3454 process = lttv_state_find_process(ts, ANY_CPU, pid);
3455 if(process == NULL) {
3456 parent_process = lttv_state_find_process(ts, ANY_CPU, parent_pid);
3457 process = lttv_state_create_process(ts, parent_process, cpu,
3458 pid, tgid, g_quark_from_string(command),
3459 &s->parent.timestamp);
3460
3461 /* Keep the stack bottom : a running user mode */
3462 /* Disabled because of inconsistencies in the current statedump states. */
3463 if(type == LTTV_STATE_KERNEL_THREAD) {
3464 /* Only keep the bottom
3465 * FIXME Kernel thread : can be in syscall or interrupt or trap. */
3466 /* Will cause expected trap when in fact being syscall (even after end of
3467 * statedump event)
3468 * Will cause expected interrupt when being syscall. (only before end of
3469 * statedump event) */
3470 // This will cause a "popping last state on stack, ignoring it."
3471 process->execution_stack = g_array_set_size(process->execution_stack, 1);
3472 es = process->state = &g_array_index(process->execution_stack,
3473 LttvExecutionState, 0);
3474 process->type = LTTV_STATE_KERNEL_THREAD;
3475 es->t = LTTV_STATE_MODE_UNKNOWN;
3476 es->s = LTTV_STATE_UNNAMED;
3477 es->n = LTTV_STATE_SUBMODE_UNKNOWN;
3478 #if 0
3479 es->t = LTTV_STATE_SYSCALL;
3480 es->s = status;
3481 es->n = submode;
3482 #endif //0
3483 } else {
3484 /* User space process :
3485 * bottom : user mode
3486 * either currently running or scheduled out.
3487 * can be scheduled out because interrupted in (user mode or in syscall)
3488 * or because of an explicit call to the scheduler in syscall. Note that
3489 * the scheduler call comes after the irq_exit, so never in interrupt
3490 * context. */
3491 // temp workaround : set size to 1 : only have user mode bottom of stack.
3492 // will cause g_info message of expected syscall mode when in fact being
3493 // in user mode. Can also cause expected trap when in fact being user
3494 // mode in the event of a page fault reenabling interrupts in the handler.
3495 // Expected syscall and trap can also happen after the end of statedump
3496 // This will cause a "popping last state on stack, ignoring it."
3497 process->execution_stack = g_array_set_size(process->execution_stack, 1);
3498 es = process->state = &g_array_index(process->execution_stack,
3499 LttvExecutionState, 0);
3500 es->t = LTTV_STATE_MODE_UNKNOWN;
3501 es->s = LTTV_STATE_UNNAMED;
3502 es->n = LTTV_STATE_SUBMODE_UNKNOWN;
3503 #if 0
3504 es->t = LTTV_STATE_USER_MODE;
3505 es->s = status;
3506 es->n = submode;
3507 #endif //0
3508 }
3509 #if 0
3510 /* UNKNOWN STATE */
3511 {
3512 es = process->state = &g_array_index(process->execution_stack,
3513 LttvExecutionState, 1);
3514 es->t = LTTV_STATE_MODE_UNKNOWN;
3515 es->s = LTTV_STATE_UNNAMED;
3516 es->n = LTTV_STATE_SUBMODE_UNKNOWN;
3517 }
3518 #endif //0
3519 } else {
3520 /* The process has already been created :
3521 * Probably was forked while dumping the process state or
3522 * was simply scheduled in prior to get the state dump event.
3523 */
3524 process->ppid = parent_pid;
3525 process->tgid = tgid;
3526 process->name = g_quark_from_string(command);
3527 process->type = type;
3528 es =
3529 &g_array_index(process->execution_stack, LttvExecutionState, 0);
3530 #if 0
3531 if(es->t == LTTV_STATE_MODE_UNKNOWN) {
3532 if(type == LTTV_STATE_KERNEL_THREAD)
3533 es->t = LTTV_STATE_SYSCALL;
3534 else
3535 es->t = LTTV_STATE_USER_MODE;
3536 }
3537 #endif //0
3538 /* Don't mess around with the stack, it will eventually become
3539 * ok after the end of state dump. */
3540 }
3541 }
3542
3543 return FALSE;
3544 }
3545
3546 gint lttv_state_hook_add_event_hooks(void *hook_data, void *call_data)
3547 {
3548 LttvTracesetState *tss = (LttvTracesetState*)(call_data);
3549
3550 lttv_state_add_event_hooks(tss);
3551
3552 return 0;
3553 }
3554
3555 void lttv_state_add_event_hooks(LttvTracesetState *self)
3556 {
3557 LttvTraceset *traceset = self->parent.ts;
3558
3559 guint i, j, k, nb_trace, nb_tracefile;
3560
3561 LttvTraceState *ts;
3562
3563 LttvTracefileState *tfs;
3564
3565 GArray *hooks;
3566
3567 LttvTraceHook *th;
3568
3569 LttvAttributeValue val;
3570
3571 nb_trace = lttv_traceset_number(traceset);
3572 for(i = 0 ; i < nb_trace ; i++) {
3573 ts = (LttvTraceState *)self->parent.traces[i];
3574
3575 /* Find the eventtype id for the following events and register the
3576 associated by id hooks. */
3577
3578 hooks = g_array_sized_new(FALSE, FALSE, sizeof(LttvTraceHook), 20);
3579 //hooks = g_array_set_size(hooks, 19); // Max possible number of hooks.
3580 //hn = 0;
3581
3582 lttv_trace_find_hook(ts->parent.t,
3583 LTT_CHANNEL_KERNEL,
3584 LTT_EVENT_SYSCALL_ENTRY,
3585 FIELD_ARRAY(LTT_FIELD_SYSCALL_ID),
3586 syscall_entry, NULL, &hooks);
3587
3588 lttv_trace_find_hook(ts->parent.t,
3589 LTT_CHANNEL_KERNEL,
3590 LTT_EVENT_SYSCALL_EXIT,
3591 NULL,
3592 syscall_exit, NULL, &hooks);
3593
3594 lttv_trace_find_hook(ts->parent.t,
3595 LTT_CHANNEL_KERNEL,
3596 LTT_EVENT_TRAP_ENTRY,
3597 FIELD_ARRAY(LTT_FIELD_TRAP_ID),
3598 trap_entry, NULL, &hooks);
3599
3600 lttv_trace_find_hook(ts->parent.t,
3601 LTT_CHANNEL_KERNEL,
3602 LTT_EVENT_TRAP_EXIT,
3603 NULL,
3604 trap_exit, NULL, &hooks);
3605
3606 lttv_trace_find_hook(ts->parent.t,
3607 LTT_CHANNEL_KERNEL,
3608 LTT_EVENT_PAGE_FAULT_ENTRY,
3609 FIELD_ARRAY(LTT_FIELD_TRAP_ID),
3610 trap_entry, NULL, &hooks);
3611
3612 lttv_trace_find_hook(ts->parent.t,
3613 LTT_CHANNEL_KERNEL,
3614 LTT_EVENT_PAGE_FAULT_EXIT,
3615 NULL,
3616 trap_exit, NULL, &hooks);
3617
3618 lttv_trace_find_hook(ts->parent.t,
3619 LTT_CHANNEL_KERNEL,
3620 LTT_EVENT_PAGE_FAULT_NOSEM_ENTRY,
3621 FIELD_ARRAY(LTT_FIELD_TRAP_ID),
3622 trap_entry, NULL, &hooks);
3623
3624 lttv_trace_find_hook(ts->parent.t,
3625 LTT_CHANNEL_KERNEL,
3626 LTT_EVENT_PAGE_FAULT_NOSEM_EXIT,
3627 NULL,
3628 trap_exit, NULL, &hooks);
3629
3630 lttv_trace_find_hook(ts->parent.t,
3631 LTT_CHANNEL_KERNEL,
3632 LTT_EVENT_IRQ_ENTRY,
3633 FIELD_ARRAY(LTT_FIELD_IRQ_ID),
3634 irq_entry, NULL, &hooks);
3635
3636 lttv_trace_find_hook(ts->parent.t,
3637 LTT_CHANNEL_KERNEL,
3638 LTT_EVENT_IRQ_EXIT,
3639 NULL,
3640 irq_exit, NULL, &hooks);
3641
3642 lttv_trace_find_hook(ts->parent.t,
3643 LTT_CHANNEL_KERNEL,
3644 LTT_EVENT_SOFT_IRQ_RAISE,
3645 FIELD_ARRAY(LTT_FIELD_SOFT_IRQ_ID),
3646 soft_irq_raise, NULL, &hooks);
3647
3648 lttv_trace_find_hook(ts->parent.t,
3649 LTT_CHANNEL_KERNEL,
3650 LTT_EVENT_SOFT_IRQ_ENTRY,
3651 FIELD_ARRAY(LTT_FIELD_SOFT_IRQ_ID),
3652 soft_irq_entry, NULL, &hooks);
3653
3654 lttv_trace_find_hook(ts->parent.t,
3655 LTT_CHANNEL_KERNEL,
3656 LTT_EVENT_SOFT_IRQ_EXIT,
3657 NULL,
3658 soft_irq_exit, NULL, &hooks);
3659
3660 lttv_trace_find_hook(ts->parent.t,
3661 LTT_CHANNEL_KERNEL,
3662 LTT_EVENT_SCHED_SCHEDULE,
3663 FIELD_ARRAY(LTT_FIELD_PREV_PID, LTT_FIELD_NEXT_PID,
3664 LTT_FIELD_PREV_STATE),
3665 schedchange, NULL, &hooks);
3666
3667 lttv_trace_find_hook(ts->parent.t,
3668 LTT_CHANNEL_KERNEL,
3669 LTT_EVENT_SCHED_TRY_WAKEUP,
3670 FIELD_ARRAY(LTT_FIELD_PID, LTT_FIELD_CPU_ID, LTT_FIELD_STATE),
3671 sched_try_wakeup, NULL, &hooks);
3672
3673 lttv_trace_find_hook(ts->parent.t,
3674 LTT_CHANNEL_KERNEL,
3675 LTT_EVENT_PROCESS_FORK,
3676 FIELD_ARRAY(LTT_FIELD_PARENT_PID, LTT_FIELD_CHILD_PID,
3677 LTT_FIELD_CHILD_TGID),
3678 process_fork, NULL, &hooks);
3679
3680 lttv_trace_find_hook(ts->parent.t,
3681 LTT_CHANNEL_KERNEL,
3682 LTT_EVENT_KTHREAD_CREATE,
3683 FIELD_ARRAY(LTT_FIELD_PID),
3684 process_kernel_thread, NULL, &hooks);
3685
3686 lttv_trace_find_hook(ts->parent.t,
3687 LTT_CHANNEL_KERNEL,
3688 LTT_EVENT_PROCESS_EXIT,
3689 FIELD_ARRAY(LTT_FIELD_PID),
3690 process_exit, NULL, &hooks);
3691
3692 lttv_trace_find_hook(ts->parent.t,
3693 LTT_CHANNEL_KERNEL,
3694 LTT_EVENT_PROCESS_FREE,
3695 FIELD_ARRAY(LTT_FIELD_PID),
3696 process_free, NULL, &hooks);
3697
3698 lttv_trace_find_hook(ts->parent.t,
3699 LTT_CHANNEL_FS,
3700 LTT_EVENT_EXEC,
3701 FIELD_ARRAY(LTT_FIELD_FILENAME),
3702 process_exec, NULL, &hooks);
3703
3704 lttv_trace_find_hook(ts->parent.t,
3705 LTT_CHANNEL_USERSPACE,
3706 LTT_EVENT_THREAD_BRAND,
3707 FIELD_ARRAY(LTT_FIELD_NAME),
3708 thread_brand, NULL, &hooks);
3709
3710 /* statedump-related hooks */
3711 lttv_trace_find_hook(ts->parent.t,
3712 LTT_CHANNEL_TASK_STATE,
3713 LTT_EVENT_PROCESS_STATE,
3714 FIELD_ARRAY(LTT_FIELD_PID, LTT_FIELD_PARENT_PID, LTT_FIELD_NAME,
3715 LTT_FIELD_TYPE, LTT_FIELD_MODE, LTT_FIELD_SUBMODE,
3716 LTT_FIELD_STATUS, LTT_FIELD_TGID),
3717 enum_process_state, NULL, &hooks);
3718
3719 lttv_trace_find_hook(ts->parent.t,
3720 LTT_CHANNEL_GLOBAL_STATE,
3721 LTT_EVENT_STATEDUMP_END,
3722 NULL,
3723 statedump_end, NULL, &hooks);
3724
3725 lttv_trace_find_hook(ts->parent.t,
3726 LTT_CHANNEL_IRQ_STATE,
3727 LTT_EVENT_LIST_INTERRUPT,
3728 FIELD_ARRAY(LTT_FIELD_ACTION, LTT_FIELD_IRQ_ID),
3729 enum_interrupt, NULL, &hooks);
3730
3731 lttv_trace_find_hook(ts->parent.t,
3732 LTT_CHANNEL_BLOCK,
3733 LTT_EVENT_REQUEST_ISSUE,
3734 FIELD_ARRAY(LTT_FIELD_MAJOR, LTT_FIELD_MINOR, LTT_FIELD_OPERATION),
3735 bdev_request_issue, NULL, &hooks);
3736
3737 lttv_trace_find_hook(ts->parent.t,
3738 LTT_CHANNEL_BLOCK,
3739 LTT_EVENT_REQUEST_COMPLETE,
3740 FIELD_ARRAY(LTT_FIELD_MAJOR, LTT_FIELD_MINOR, LTT_FIELD_OPERATION),
3741 bdev_request_complete, NULL, &hooks);
3742
3743 lttv_trace_find_hook(ts->parent.t,
3744 LTT_CHANNEL_USERSPACE,
3745 LTT_EVENT_FUNCTION_ENTRY,
3746 FIELD_ARRAY(LTT_FIELD_THIS_FN, LTT_FIELD_CALL_SITE),
3747 function_entry, NULL, &hooks);
3748
3749 lttv_trace_find_hook(ts->parent.t,
3750 LTT_CHANNEL_USERSPACE,
3751 LTT_EVENT_FUNCTION_EXIT,
3752 FIELD_ARRAY(LTT_FIELD_THIS_FN, LTT_FIELD_CALL_SITE),
3753 function_exit, NULL, &hooks);
3754
3755 lttv_trace_find_hook(ts->parent.t,
3756 LTT_CHANNEL_SYSCALL_STATE,
3757 LTT_EVENT_SYS_CALL_TABLE,
3758 FIELD_ARRAY(LTT_FIELD_ID, LTT_FIELD_ADDRESS, LTT_FIELD_SYMBOL),
3759 dump_syscall, NULL, &hooks);
3760
3761 lttv_trace_find_hook(ts->parent.t,
3762 LTT_CHANNEL_KPROBE_STATE,
3763 LTT_EVENT_KPROBE_TABLE,
3764 FIELD_ARRAY(LTT_FIELD_IP, LTT_FIELD_SYMBOL),
3765 dump_kprobe, NULL, &hooks);
3766
3767 lttv_trace_find_hook(ts->parent.t,
3768 LTT_CHANNEL_SOFTIRQ_STATE,
3769 LTT_EVENT_SOFTIRQ_VEC,
3770 FIELD_ARRAY(LTT_FIELD_ID, LTT_FIELD_ADDRESS, LTT_FIELD_SYMBOL),
3771 dump_softirq, NULL, &hooks);
3772
3773 lttv_trace_find_hook(ts->parent.t,
3774 LTT_CHANNEL_FS,
3775 LTT_EVENT_OPEN,
3776 FIELD_ARRAY(LTT_FIELD_FD, LTT_FIELD_FILENAME),
3777 fs_open, NULL, &hooks);
3778
3779 /* Add these hooks to each event_by_id hooks list */
3780
3781 nb_tracefile = ts->parent.tracefiles->len;
3782
3783 for(j = 0 ; j < nb_tracefile ; j++) {
3784 tfs =
3785 LTTV_TRACEFILE_STATE(g_array_index(ts->parent.tracefiles,
3786 LttvTracefileContext*, j));
3787
3788 for(k = 0 ; k < hooks->len ; k++) {
3789 th = &g_array_index(hooks, LttvTraceHook, k);
3790 if (th->mdata == tfs->parent.tf->mdata)
3791 lttv_hooks_add(
3792 lttv_hooks_by_id_find(tfs->parent.event_by_id, th->id),
3793 th->h,
3794 th,
3795 LTTV_PRIO_STATE);
3796 }
3797 }
3798 lttv_attribute_find(ts->parent.a, LTTV_STATE_HOOKS, LTTV_POINTER, &val);
3799 *(val.v_pointer) = hooks;
3800 }
3801 }
3802
3803 gint lttv_state_hook_remove_event_hooks(void *hook_data, void *call_data)
3804 {
3805 LttvTracesetState *tss = (LttvTracesetState*)(call_data);
3806
3807 lttv_state_remove_event_hooks(tss);
3808
3809 return 0;
3810 }
3811
3812 void lttv_state_remove_event_hooks(LttvTracesetState *self)
3813 {
3814 LttvTraceset *traceset = self->parent.ts;
3815
3816 guint i, j, k, nb_trace, nb_tracefile;
3817
3818 LttvTraceState *ts;
3819
3820 LttvTracefileState *tfs;
3821
3822 GArray *hooks;
3823
3824 LttvTraceHook *th;
3825
3826 LttvAttributeValue val;
3827
3828 nb_trace = lttv_traceset_number(traceset);
3829 for(i = 0 ; i < nb_trace ; i++) {
3830 ts = LTTV_TRACE_STATE(self->parent.traces[i]);
3831
3832 lttv_attribute_find(ts->parent.a, LTTV_STATE_HOOKS, LTTV_POINTER, &val);
3833 hooks = *(val.v_pointer);
3834
3835 /* Remove these hooks from each event_by_id hooks list */
3836
3837 nb_tracefile = ts->parent.tracefiles->len;
3838
3839 for(j = 0 ; j < nb_tracefile ; j++) {
3840 tfs =
3841 LTTV_TRACEFILE_STATE(g_array_index(ts->parent.tracefiles,
3842 LttvTracefileContext*, j));
3843
3844 for(k = 0 ; k < hooks->len ; k++) {
3845 th = &g_array_index(hooks, LttvTraceHook, k);
3846 if (th->mdata == tfs->parent.tf->mdata)
3847 lttv_hooks_remove_data(
3848 lttv_hooks_by_id_find(tfs->parent.event_by_id, th->id),
3849 th->h,
3850 th);
3851 }
3852 }
3853 lttv_trace_hook_remove_all(&hooks);
3854 g_array_free(hooks, TRUE);
3855 }
3856 }
3857
3858 static gboolean state_save_event_hook(void *hook_data, void *call_data)
3859 {
3860 guint *event_count = (guint*)hook_data;
3861
3862 /* Only save at LTTV_STATE_SAVE_INTERVAL */
3863 if(likely((*event_count)++ < LTTV_STATE_SAVE_INTERVAL))
3864 return FALSE;
3865 else
3866 *event_count = 0;
3867
3868 LttvTracefileState *self = (LttvTracefileState *)call_data;
3869
3870 LttvTraceState *tcs = (LttvTraceState *)(self->parent.t_context);
3871
3872 LttvAttribute *saved_states_tree, *saved_state_tree;
3873
3874 LttvAttributeValue value;
3875
3876 saved_states_tree = lttv_attribute_find_subdir(tcs->parent.t_a,
3877 LTTV_STATE_SAVED_STATES);
3878 saved_state_tree = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
3879 value = lttv_attribute_add(saved_states_tree,
3880 lttv_attribute_get_number(saved_states_tree), LTTV_GOBJECT);
3881 *(value.v_gobject) = (GObject *)saved_state_tree;
3882 value = lttv_attribute_add(saved_state_tree, LTTV_STATE_TIME, LTTV_TIME);
3883 *(value.v_time) = self->parent.timestamp;
3884 lttv_state_save(tcs, saved_state_tree);
3885 g_debug("Saving state at time %lu.%lu", self->parent.timestamp.tv_sec,
3886 self->parent.timestamp.tv_nsec);
3887
3888 *(tcs->max_time_state_recomputed_in_seek) = self->parent.timestamp;
3889
3890 return FALSE;
3891 }
3892
3893 static gboolean state_save_after_trace_hook(void *hook_data, void *call_data)
3894 {
3895 LttvTraceState *tcs = (LttvTraceState *)(call_data);
3896
3897 *(tcs->max_time_state_recomputed_in_seek) = tcs->parent.time_span.end_time;
3898
3899 return FALSE;
3900 }
3901
3902 guint lttv_state_current_cpu(LttvTracefileState *tfs)
3903 {
3904 return tfs->cpu;
3905 }
3906
3907
3908
3909 #if 0
3910 static gboolean block_start(void *hook_data, void *call_data)
3911 {
3912 LttvTracefileState *self = (LttvTracefileState *)call_data;
3913
3914 LttvTracefileState *tfcs;
3915
3916 LttvTraceState *tcs = (LttvTraceState *)(self->parent.t_context);
3917
3918 LttEventPosition *ep;
3919
3920 guint i, nb_block, nb_event, nb_tracefile;
3921
3922 LttTracefile *tf;
3923
3924 LttvAttribute *saved_states_tree, *saved_state_tree;
3925
3926 LttvAttributeValue value;
3927
3928 ep = ltt_event_position_new();
3929
3930 nb_tracefile = tcs->parent.tracefiles->len;
3931
3932 /* Count the number of events added since the last block end in any
3933 tracefile. */
3934
3935 for(i = 0 ; i < nb_tracefile ; i++) {
3936 tfcs =
3937 LTTV_TRACEFILE_STATE(&g_array_index(tcs->parent.tracefiles,
3938 LttvTracefileContext, i));
3939 ltt_event_position(tfcs->parent.e, ep);
3940 ltt_event_position_get(ep, &nb_block, &nb_event, &tf);
3941 tcs->nb_event += nb_event - tfcs->saved_position;
3942 tfcs->saved_position = nb_event;
3943 }
3944 g_free(ep);
3945
3946 if(tcs->nb_event >= tcs->save_interval) {
3947 saved_states_tree = lttv_attribute_find_subdir(tcs->parent.t_a,
3948 LTTV_STATE_SAVED_STATES);
3949 saved_state_tree = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
3950 value = lttv_attribute_add(saved_states_tree,
3951 lttv_attribute_get_number(saved_states_tree), LTTV_GOBJECT);
3952 *(value.v_gobject) = (GObject *)saved_state_tree;
3953 value = lttv_attribute_add(saved_state_tree, LTTV_STATE_TIME, LTTV_TIME);
3954 *(value.v_time) = self->parent.timestamp;
3955 lttv_state_save(tcs, saved_state_tree);
3956 tcs->nb_event = 0;
3957 g_debug("Saving state at time %lu.%lu", self->parent.timestamp.tv_sec,
3958 self->parent.timestamp.tv_nsec);
3959 }
3960 *(tcs->max_time_state_recomputed_in_seek) = self->parent.timestamp;
3961 return FALSE;
3962 }
3963 #endif //0
3964
3965 #if 0
3966 static gboolean block_end(void *hook_data, void *call_data)
3967 {
3968 LttvTracefileState *self = (LttvTracefileState *)call_data;
3969
3970 LttvTraceState *tcs = (LttvTraceState *)(self->parent.t_context);
3971
3972 LttTracefile *tf;
3973
3974 LttEventPosition *ep;
3975
3976 guint nb_block, nb_event;
3977
3978 ep = ltt_event_position_new();
3979 ltt_event_position(self->parent.e, ep);
3980 ltt_event_position_get(ep, &nb_block, &nb_event, &tf);
3981 tcs->nb_event += nb_event - self->saved_position + 1;
3982 self->saved_position = 0;
3983 *(tcs->max_time_state_recomputed_in_seek) = self->parent.timestamp;
3984 g_free(ep);
3985
3986 return FALSE;
3987 }
3988 #endif //0
3989 #if 0
3990 void lttv_state_save_add_event_hooks(LttvTracesetState *self)
3991 {
3992 LttvTraceset *traceset = self->parent.ts;
3993
3994 guint i, j, nb_trace, nb_tracefile;
3995
3996 LttvTraceState *ts;
3997
3998 LttvTracefileState *tfs;
3999
4000 LttvTraceHook hook_start, hook_end;
4001
4002 nb_trace = lttv_traceset_number(traceset);
4003 for(i = 0 ; i < nb_trace ; i++) {
4004 ts = (LttvTraceState *)self->parent.traces[i];
4005
4006 lttv_trace_find_hook(ts->parent.t, "core","block_start",NULL,
4007 NULL, NULL, block_start, &hook_start);
4008 lttv_trace_find_hook(ts->parent.t, "core","block_end",NULL,
4009 NULL, NULL, block_end, &hook_end);
4010
4011 nb_tracefile = ts->parent.tracefiles->len;
4012
4013 for(j = 0 ; j < nb_tracefile ; j++) {
4014 tfs =
4015 LTTV_TRACEFILE_STATE(&g_array_index(ts->parent.tracefiles,
4016 LttvTracefileContext, j));
4017 lttv_hooks_add(lttv_hooks_by_id_find(tfs->parent.event_by_id,
4018 hook_start.id), hook_start.h, NULL, LTTV_PRIO_STATE);
4019 lttv_hooks_add(lttv_hooks_by_id_find(tfs->parent.event_by_id,
4020 hook_end.id), hook_end.h, NULL, LTTV_PRIO_STATE);
4021 }
4022 }
4023 }
4024 #endif //0
4025
4026 void lttv_state_save_add_event_hooks(LttvTracesetState *self)
4027 {
4028 LttvTraceset *traceset = self->parent.ts;
4029
4030 guint i, j, nb_trace, nb_tracefile;
4031
4032 LttvTraceState *ts;
4033
4034 LttvTracefileState *tfs;
4035
4036
4037 nb_trace = lttv_traceset_number(traceset);
4038 for(i = 0 ; i < nb_trace ; i++) {
4039
4040 ts = (LttvTraceState *)self->parent.traces[i];
4041 nb_tracefile = ts->parent.tracefiles->len;
4042
4043 if(ts->has_precomputed_states) continue;
4044
4045 guint *event_count = g_new(guint, 1);
4046 *event_count = 0;
4047
4048 for(j = 0 ; j < nb_tracefile ; j++) {
4049 tfs =
4050 LTTV_TRACEFILE_STATE(g_array_index(ts->parent.tracefiles,
4051 LttvTracefileContext*, j));
4052 lttv_hooks_add(tfs->parent.event,
4053 state_save_event_hook,
4054 event_count,
4055 LTTV_PRIO_STATE);
4056
4057 }
4058 }
4059
4060 lttv_process_traceset_begin(&self->parent,
4061 NULL, NULL, NULL, NULL, NULL);
4062
4063 }
4064
4065 gint lttv_state_save_hook_add_event_hooks(void *hook_data, void *call_data)
4066 {
4067 LttvTracesetState *tss = (LttvTracesetState*)(call_data);
4068
4069 lttv_state_save_add_event_hooks(tss);
4070
4071 return 0;
4072 }
4073
4074
4075 #if 0
4076 void lttv_state_save_remove_event_hooks(LttvTracesetState *self)
4077 {
4078 LttvTraceset *traceset = self->parent.ts;
4079
4080 guint i, j, nb_trace, nb_tracefile;
4081
4082 LttvTraceState *ts;
4083
4084 LttvTracefileState *tfs;
4085
4086 LttvTraceHook hook_start, hook_end;
4087
4088 nb_trace = lttv_traceset_number(traceset);
4089 for(i = 0 ; i < nb_trace ; i++) {
4090 ts = LTTV_TRACE_STATE(self->parent.traces[i]);
4091
4092 lttv_trace_find_hook(ts->parent.t, "core","block_start",NULL,
4093 NULL, NULL, block_start, &hook_start);
4094
4095 lttv_trace_find_hook(ts->parent.t, "core","block_end",NULL,
4096 NULL, NULL, block_end, &hook_end);
4097
4098 nb_tracefile = ts->parent.tracefiles->len;
4099
4100 for(j = 0 ; j < nb_tracefile ; j++) {
4101 tfs =
4102 LTTV_TRACEFILE_STATE(&g_array_index(ts->parent.tracefiles,
4103 LttvTracefileContext, j));
4104 lttv_hooks_remove_data(lttv_hooks_by_id_find(
4105 tfs->parent.event_by_id, hook_start.id), hook_start.h, NULL);
4106 lttv_hooks_remove_data(lttv_hooks_by_id_find(
4107 tfs->parent.event_by_id, hook_end.id), hook_end.h, NULL);
4108 }
4109 }
4110 }
4111 #endif //0
4112
4113 void lttv_state_save_remove_event_hooks(LttvTracesetState *self)
4114 {
4115 LttvTraceset *traceset = self->parent.ts;
4116
4117 guint i, j, nb_trace, nb_tracefile;
4118
4119 LttvTraceState *ts;
4120
4121 LttvTracefileState *tfs;
4122
4123 LttvHooks *after_trace = lttv_hooks_new();
4124
4125 lttv_hooks_add(after_trace,
4126 state_save_after_trace_hook,
4127 NULL,
4128 LTTV_PRIO_STATE);
4129
4130
4131 lttv_process_traceset_end(&self->parent,
4132 NULL, after_trace, NULL, NULL, NULL);
4133
4134 lttv_hooks_destroy(after_trace);
4135
4136 nb_trace = lttv_traceset_number(traceset);
4137 for(i = 0 ; i < nb_trace ; i++) {
4138
4139 ts = (LttvTraceState *)self->parent.traces[i];
4140 nb_tracefile = ts->parent.tracefiles->len;
4141
4142 if(ts->has_precomputed_states) continue;
4143
4144 guint *event_count = NULL;
4145
4146 for(j = 0 ; j < nb_tracefile ; j++) {
4147 tfs =
4148 LTTV_TRACEFILE_STATE(g_array_index(ts->parent.tracefiles,
4149 LttvTracefileContext*, j));
4150 event_count = lttv_hooks_remove(tfs->parent.event,
4151 state_save_event_hook);
4152 }
4153 if(event_count) g_free(event_count);
4154 }
4155 }
4156
4157 gint lttv_state_save_hook_remove_event_hooks(void *hook_data, void *call_data)
4158 {
4159 LttvTracesetState *tss = (LttvTracesetState*)(call_data);
4160
4161 lttv_state_save_remove_event_hooks(tss);
4162
4163 return 0;
4164 }
4165
4166 void lttv_state_traceset_seek_time_closest(LttvTracesetState *self, LttTime t)
4167 {
4168 LttvTraceset *traceset = self->parent.ts;
4169
4170 guint i, nb_trace;
4171
4172 int min_pos, mid_pos, max_pos;
4173
4174 guint call_rest = 0;
4175
4176 LttvTraceState *tcs;
4177
4178 LttvAttributeValue value;
4179
4180 LttvAttributeType type;
4181
4182 LttvAttributeName name;
4183
4184 gboolean is_named;
4185
4186 LttvAttribute *saved_states_tree, *saved_state_tree, *closest_tree = NULL;
4187
4188 //g_tree_destroy(self->parent.pqueue);
4189 //self->parent.pqueue = g_tree_new(compare_tracefile);
4190
4191 g_info("Entering seek_time_closest for time %lu.%lu", t.tv_sec, t.tv_nsec);
4192
4193 nb_trace = lttv_traceset_number(traceset);
4194 for(i = 0 ; i < nb_trace ; i++) {
4195 tcs = (LttvTraceState *)self->parent.traces[i];
4196
4197 if(ltt_time_compare(t, *(tcs->max_time_state_recomputed_in_seek)) < 0) {
4198 saved_states_tree = lttv_attribute_find_subdir(tcs->parent.t_a,
4199 LTTV_STATE_SAVED_STATES);
4200 min_pos = -1;
4201
4202 if(saved_states_tree) {
4203 max_pos = lttv_attribute_get_number(saved_states_tree) - 1;
4204 mid_pos = max_pos / 2;
4205 while(min_pos < max_pos) {
4206 type = lttv_attribute_get(saved_states_tree, mid_pos, &name, &value,
4207 &is_named);
4208 g_assert(type == LTTV_GOBJECT);
4209 saved_state_tree = *((LttvAttribute **)(value.v_gobject));
4210 type = lttv_attribute_get_by_name(saved_state_tree, LTTV_STATE_TIME,
4211 &value);
4212 g_assert(type == LTTV_TIME);
4213 if(ltt_time_compare(*(value.v_time), t) < 0) {
4214 min_pos = mid_pos;
4215 closest_tree = saved_state_tree;
4216 }
4217 else max_pos = mid_pos - 1;
4218
4219 mid_pos = (min_pos + max_pos + 1) / 2;
4220 }
4221 }
4222
4223 /* restore the closest earlier saved state */
4224 if(min_pos != -1) {
4225 lttv_state_restore(tcs, closest_tree);
4226 call_rest = 1;
4227 }
4228
4229 /* There is no saved state, yet we want to have it. Restart at T0 */
4230 else {
4231 restore_init_state(tcs);
4232 lttv_process_trace_seek_time(&(tcs->parent), ltt_time_zero);
4233 }
4234 }
4235 /* We want to seek quickly without restoring/updating the state */
4236 else {
4237 restore_init_state(tcs);
4238 lttv_process_trace_seek_time(&(tcs->parent), t);
4239 }
4240 }
4241 if(!call_rest) g_info("NOT Calling restore");
4242 }
4243
4244
4245 static void
4246 traceset_state_instance_init (GTypeInstance *instance, gpointer g_class)
4247 {
4248 }
4249
4250
4251 static void
4252 traceset_state_finalize (LttvTracesetState *self)
4253 {
4254 G_OBJECT_CLASS(g_type_class_peek(LTTV_TRACESET_CONTEXT_TYPE))->
4255 finalize(G_OBJECT(self));
4256 }
4257
4258
4259 static void
4260 traceset_state_class_init (LttvTracesetContextClass *klass)
4261 {
4262 GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
4263
4264 gobject_class->finalize = (void (*)(GObject *self)) traceset_state_finalize;
4265 klass->init = (void (*)(LttvTracesetContext *self, LttvTraceset *ts))init;
4266 klass->fini = (void (*)(LttvTracesetContext *self))fini;
4267 klass->new_traceset_context = new_traceset_context;
4268 klass->new_trace_context = new_trace_context;
4269 klass->new_tracefile_context = new_tracefile_context;
4270 }
4271
4272
4273 GType
4274 lttv_traceset_state_get_type(void)
4275 {
4276 static GType type = 0;
4277 if (type == 0) {
4278 static const GTypeInfo info = {
4279 sizeof (LttvTracesetStateClass),
4280 NULL, /* base_init */
4281 NULL, /* base_finalize */
4282 (GClassInitFunc) traceset_state_class_init, /* class_init */
4283 NULL, /* class_finalize */
4284 NULL, /* class_data */
4285 sizeof (LttvTracesetState),
4286 0, /* n_preallocs */
4287 (GInstanceInitFunc) traceset_state_instance_init, /* instance_init */
4288 NULL /* value handling */
4289 };
4290
4291 type = g_type_register_static (LTTV_TRACESET_CONTEXT_TYPE, "LttvTracesetStateType",
4292 &info, 0);
4293 }
4294 return type;
4295 }
4296
4297
4298 static void
4299 trace_state_instance_init (GTypeInstance *instance, gpointer g_class)
4300 {
4301 }
4302
4303
4304 static void
4305 trace_state_finalize (LttvTraceState *self)
4306 {
4307 G_OBJECT_CLASS(g_type_class_peek(LTTV_TRACE_CONTEXT_TYPE))->
4308 finalize(G_OBJECT(self));
4309 }
4310
4311
4312 static void
4313 trace_state_class_init (LttvTraceStateClass *klass)
4314 {
4315 GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
4316
4317 gobject_class->finalize = (void (*)(GObject *self)) trace_state_finalize;
4318 klass->state_save = state_save;
4319 klass->state_restore = state_restore;
4320 klass->state_saved_free = state_saved_free;
4321 }
4322
4323
4324 GType
4325 lttv_trace_state_get_type(void)
4326 {
4327 static GType type = 0;
4328 if (type == 0) {
4329 static const GTypeInfo info = {
4330 sizeof (LttvTraceStateClass),
4331 NULL, /* base_init */
4332 NULL, /* base_finalize */
4333 (GClassInitFunc) trace_state_class_init, /* class_init */
4334 NULL, /* class_finalize */
4335 NULL, /* class_data */
4336 sizeof (LttvTraceState),
4337 0, /* n_preallocs */
4338 (GInstanceInitFunc) trace_state_instance_init, /* instance_init */
4339 NULL /* value handling */
4340 };
4341
4342 type = g_type_register_static (LTTV_TRACE_CONTEXT_TYPE,
4343 "LttvTraceStateType", &info, 0);
4344 }
4345 return type;
4346 }
4347
4348
4349 static void
4350 tracefile_state_instance_init (GTypeInstance *instance, gpointer g_class)
4351 {
4352 }
4353
4354
4355 static void
4356 tracefile_state_finalize (LttvTracefileState *self)
4357 {
4358 G_OBJECT_CLASS(g_type_class_peek(LTTV_TRACEFILE_CONTEXT_TYPE))->
4359 finalize(G_OBJECT(self));
4360 }
4361
4362
4363 static void
4364 tracefile_state_class_init (LttvTracefileStateClass *klass)
4365 {
4366 GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
4367
4368 gobject_class->finalize = (void (*)(GObject *self)) tracefile_state_finalize;
4369 }
4370
4371
4372 GType
4373 lttv_tracefile_state_get_type(void)
4374 {
4375 static GType type = 0;
4376 if (type == 0) {
4377 static const GTypeInfo info = {
4378 sizeof (LttvTracefileStateClass),
4379 NULL, /* base_init */
4380 NULL, /* base_finalize */
4381 (GClassInitFunc) tracefile_state_class_init, /* class_init */
4382 NULL, /* class_finalize */
4383 NULL, /* class_data */
4384 sizeof (LttvTracefileState),
4385 0, /* n_preallocs */
4386 (GInstanceInitFunc) tracefile_state_instance_init, /* instance_init */
4387 NULL /* value handling */
4388 };
4389
4390 type = g_type_register_static (LTTV_TRACEFILE_CONTEXT_TYPE,
4391 "LttvTracefileStateType", &info, 0);
4392 }
4393 return type;
4394 }
4395
4396
4397 static void module_init()
4398 {
4399 LTTV_STATE_UNNAMED = g_quark_from_string("");
4400 LTTV_STATE_UNBRANDED = g_quark_from_string("");
4401 LTTV_STATE_MODE_UNKNOWN = g_quark_from_string("MODE_UNKNOWN");
4402 LTTV_STATE_USER_MODE = g_quark_from_string("USER_MODE");
4403 LTTV_STATE_SYSCALL = g_quark_from_string("SYSCALL");
4404 LTTV_STATE_TRAP = g_quark_from_string("TRAP");
4405 LTTV_STATE_IRQ = g_quark_from_string("IRQ");
4406 LTTV_STATE_SOFT_IRQ = g_quark_from_string("SOFTIRQ");
4407 LTTV_STATE_SUBMODE_UNKNOWN = g_quark_from_string("UNKNOWN");
4408 LTTV_STATE_SUBMODE_NONE = g_quark_from_string("NONE");
4409 LTTV_STATE_WAIT_FORK = g_quark_from_string("WAIT_FORK");
4410 LTTV_STATE_WAIT_CPU = g_quark_from_string("WAIT_CPU");
4411 LTTV_STATE_EXIT = g_quark_from_string("EXIT");
4412 LTTV_STATE_ZOMBIE = g_quark_from_string("ZOMBIE");
4413 LTTV_STATE_WAIT = g_quark_from_string("WAIT");
4414 LTTV_STATE_RUN = g_quark_from_string("RUN");
4415 LTTV_STATE_DEAD = g_quark_from_string("DEAD");
4416 LTTV_STATE_USER_THREAD = g_quark_from_string("USER_THREAD");
4417 LTTV_STATE_KERNEL_THREAD = g_quark_from_string("KERNEL_THREAD");
4418 LTTV_STATE_TRACEFILES = g_quark_from_string("tracefiles");
4419 LTTV_STATE_PROCESSES = g_quark_from_string("processes");
4420 LTTV_STATE_PROCESS = g_quark_from_string("process");
4421 LTTV_STATE_RUNNING_PROCESS = g_quark_from_string("running_process");
4422 LTTV_STATE_EVENT = g_quark_from_string("event");
4423 LTTV_STATE_SAVED_STATES = g_quark_from_string("saved states");
4424 LTTV_STATE_SAVED_STATES_TIME = g_quark_from_string("saved states time");
4425 LTTV_STATE_TIME = g_quark_from_string("time");
4426 LTTV_STATE_HOOKS = g_quark_from_string("saved state hooks");
4427 LTTV_STATE_NAME_TABLES = g_quark_from_string("name tables");
4428 LTTV_STATE_TRACE_STATE_USE_COUNT =
4429 g_quark_from_string("trace_state_use_count");
4430 LTTV_STATE_RESOURCE_CPUS = g_quark_from_string("cpu resource states");
4431 LTTV_STATE_RESOURCE_CPUS = g_quark_from_string("cpu count");
4432 LTTV_STATE_RESOURCE_IRQS = g_quark_from_string("irq resource states");
4433 LTTV_STATE_RESOURCE_SOFT_IRQS = g_quark_from_string("soft irq resource states");
4434 LTTV_STATE_RESOURCE_TRAPS = g_quark_from_string("trap resource states");
4435 LTTV_STATE_RESOURCE_BLKDEVS = g_quark_from_string("blkdevs resource states");
4436
4437 LTT_CHANNEL_FD_STATE = g_quark_from_string("fd_state");
4438 LTT_CHANNEL_GLOBAL_STATE = g_quark_from_string("global_state");
4439 LTT_CHANNEL_IRQ_STATE = g_quark_from_string("irq_state");
4440 LTT_CHANNEL_MODULE_STATE = g_quark_from_string("module_state");
4441 LTT_CHANNEL_NETIF_STATE = g_quark_from_string("netif_state");
4442 LTT_CHANNEL_SOFTIRQ_STATE = g_quark_from_string("softirq_state");
4443 LTT_CHANNEL_SWAP_STATE = g_quark_from_string("swap_state");
4444 LTT_CHANNEL_SYSCALL_STATE = g_quark_from_string("syscall_state");
4445 LTT_CHANNEL_TASK_STATE = g_quark_from_string("task_state");
4446 LTT_CHANNEL_VM_STATE = g_quark_from_string("vm_state");
4447 LTT_CHANNEL_KPROBE_STATE = g_quark_from_string("kprobe_state");
4448 LTT_CHANNEL_FS = g_quark_from_string("fs");
4449 LTT_CHANNEL_KERNEL = g_quark_from_string("kernel");
4450 LTT_CHANNEL_MM = g_quark_from_string("mm");
4451 LTT_CHANNEL_USERSPACE = g_quark_from_string("userspace");
4452 LTT_CHANNEL_BLOCK = g_quark_from_string("block");
4453
4454 LTT_EVENT_SYSCALL_ENTRY = g_quark_from_string("syscall_entry");
4455 LTT_EVENT_SYSCALL_EXIT = g_quark_from_string("syscall_exit");
4456 LTT_EVENT_TRAP_ENTRY = g_quark_from_string("trap_entry");
4457 LTT_EVENT_TRAP_EXIT = g_quark_from_string("trap_exit");
4458 LTT_EVENT_PAGE_FAULT_ENTRY = g_quark_from_string("page_fault_entry");
4459 LTT_EVENT_PAGE_FAULT_EXIT = g_quark_from_string("page_fault_exit");
4460 LTT_EVENT_PAGE_FAULT_NOSEM_ENTRY = g_quark_from_string("page_fault_nosem_entry");
4461 LTT_EVENT_PAGE_FAULT_NOSEM_EXIT = g_quark_from_string("page_fault_nosem_exit");
4462 LTT_EVENT_IRQ_ENTRY = g_quark_from_string("irq_entry");
4463 LTT_EVENT_IRQ_EXIT = g_quark_from_string("irq_exit");
4464 LTT_EVENT_SOFT_IRQ_RAISE = g_quark_from_string("softirq_raise");
4465 LTT_EVENT_SOFT_IRQ_ENTRY = g_quark_from_string("softirq_entry");
4466 LTT_EVENT_SOFT_IRQ_EXIT = g_quark_from_string("softirq_exit");
4467 LTT_EVENT_SCHED_SCHEDULE = g_quark_from_string("sched_schedule");
4468 LTT_EVENT_SCHED_TRY_WAKEUP = g_quark_from_string("sched_try_wakeup");
4469 LTT_EVENT_PROCESS_FORK = g_quark_from_string("process_fork");
4470 LTT_EVENT_KTHREAD_CREATE = g_quark_from_string("kthread_create");
4471 LTT_EVENT_PROCESS_EXIT = g_quark_from_string("process_exit");
4472 LTT_EVENT_PROCESS_FREE = g_quark_from_string("process_free");
4473 LTT_EVENT_EXEC = g_quark_from_string("exec");
4474 LTT_EVENT_PROCESS_STATE = g_quark_from_string("process_state");
4475 LTT_EVENT_STATEDUMP_END = g_quark_from_string("statedump_end");
4476 LTT_EVENT_FUNCTION_ENTRY = g_quark_from_string("function_entry");
4477 LTT_EVENT_FUNCTION_EXIT = g_quark_from_string("function_exit");
4478 LTT_EVENT_THREAD_BRAND = g_quark_from_string("thread_brand");
4479 LTT_EVENT_REQUEST_ISSUE = g_quark_from_string("_blk_request_issue");
4480 LTT_EVENT_REQUEST_COMPLETE = g_quark_from_string("_blk_request_complete");
4481 LTT_EVENT_LIST_INTERRUPT = g_quark_from_string("interrupt");
4482 LTT_EVENT_SYS_CALL_TABLE = g_quark_from_string("sys_call_table");
4483 LTT_EVENT_SOFTIRQ_VEC = g_quark_from_string("softirq_vec");
4484 LTT_EVENT_KPROBE_TABLE = g_quark_from_string("kprobe_table");
4485 LTT_EVENT_KPROBE = g_quark_from_string("kprobe");
4486 LTT_EVENT_OPEN = g_quark_from_string("open");
4487 LTT_EVENT_READ = g_quark_from_string("read");
4488 LTT_EVENT_POLL_EVENT = g_quark_from_string("poll_event");
4489
4490 LTT_FIELD_SYSCALL_ID = g_quark_from_string("syscall_id");
4491 LTT_FIELD_TRAP_ID = g_quark_from_string("trap_id");
4492 LTT_FIELD_IRQ_ID = g_quark_from_string("irq_id");
4493 LTT_FIELD_SOFT_IRQ_ID = g_quark_from_string("softirq_id");
4494 LTT_FIELD_PREV_PID = g_quark_from_string("prev_pid");
4495 LTT_FIELD_NEXT_PID = g_quark_from_string("next_pid");
4496 LTT_FIELD_PREV_STATE = g_quark_from_string("prev_state");
4497 LTT_FIELD_PARENT_PID = g_quark_from_string("parent_pid");
4498 LTT_FIELD_CHILD_PID = g_quark_from_string("child_pid");
4499 LTT_FIELD_PID = g_quark_from_string("pid");
4500 LTT_FIELD_TGID = g_quark_from_string("tgid");
4501 LTT_FIELD_CHILD_TGID = g_quark_from_string("child_tgid");
4502 LTT_FIELD_FILENAME = g_quark_from_string("filename");
4503 LTT_FIELD_NAME = g_quark_from_string("name");
4504 LTT_FIELD_TYPE = g_quark_from_string("type");
4505 LTT_FIELD_MODE = g_quark_from_string("mode");
4506 LTT_FIELD_SUBMODE = g_quark_from_string("submode");
4507 LTT_FIELD_STATUS = g_quark_from_string("status");
4508 LTT_FIELD_THIS_FN = g_quark_from_string("this_fn");
4509 LTT_FIELD_CALL_SITE = g_quark_from_string("call_site");
4510 LTT_FIELD_MAJOR = g_quark_from_string("major");
4511 LTT_FIELD_MINOR = g_quark_from_string("minor");
4512 LTT_FIELD_OPERATION = g_quark_from_string("direction");
4513 LTT_FIELD_ACTION = g_quark_from_string("action");
4514 LTT_FIELD_ID = g_quark_from_string("id");
4515 LTT_FIELD_ADDRESS = g_quark_from_string("address");
4516 LTT_FIELD_SYMBOL = g_quark_from_string("symbol");
4517 LTT_FIELD_IP = g_quark_from_string("ip");
4518 LTT_FIELD_FD = g_quark_from_string("fd");
4519 LTT_FIELD_STATE = g_quark_from_string("state");
4520 LTT_FIELD_CPU_ID = g_quark_from_string("cpu_id");
4521
4522 LTTV_CPU_UNKNOWN = g_quark_from_string("unknown");
4523 LTTV_CPU_IDLE = g_quark_from_string("idle");
4524 LTTV_CPU_BUSY = g_quark_from_string("busy");
4525 LTTV_CPU_IRQ = g_quark_from_string("irq");
4526 LTTV_CPU_SOFT_IRQ = g_quark_from_string("softirq");
4527 LTTV_CPU_TRAP = g_quark_from_string("trap");
4528
4529 LTTV_IRQ_UNKNOWN = g_quark_from_string("unknown");
4530 LTTV_IRQ_IDLE = g_quark_from_string("idle");
4531 LTTV_IRQ_BUSY = g_quark_from_string("busy");
4532
4533 LTTV_BDEV_UNKNOWN = g_quark_from_string("unknown");
4534 LTTV_BDEV_IDLE = g_quark_from_string("idle");
4535 LTTV_BDEV_BUSY_READING = g_quark_from_string("busy_reading");
4536 LTTV_BDEV_BUSY_WRITING = g_quark_from_string("busy_writing");
4537 }
4538
4539 static void module_destroy()
4540 {
4541 }
4542
4543
4544 LTTV_MODULE("state", "State computation", \
4545 "Update the system state, possibly saving it at intervals", \
4546 module_init, module_destroy)
4547
4548
4549
LTTng 2.x Viewer (LTTV)
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