03d7fdf3 |
1 | /* This file is part of the Linux Trace Toolkit viewer |
2 | * Copyright (C) 2003-2004 Michel Dagenais |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License Version 2 as |
6 | * published by the Free Software Foundation; |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License |
14 | * along with this program; if not, write to the Free Software |
15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
16 | * MA 02111-1307, USA. |
17 | */ |
18 | |
19 | #ifdef HAVE_CONFIG_H |
20 | #include <config.h> |
21 | #endif |
22 | |
23 | #include <string.h> |
24 | #include <lttv/lttv.h> |
25 | #include <lttv/tracecontext.h> |
26 | #include <ltt/event.h> |
27 | #include <ltt/facility.h> |
28 | #include <ltt/trace.h> |
29 | #include <ltt/type.h> |
30 | #include <lttv/filter.h> |
31 | #include <errno.h> |
32 | |
33 | #define min(a,b) (((a)<(b))?(a):(b)) |
34 | |
35 | |
36 | gint compare_tracefile(gconstpointer a, gconstpointer b) |
37 | { |
38 | gint comparison = 0; |
39 | |
40 | const LttvTracefileContext *trace_a = (const LttvTracefileContext *)a; |
41 | const LttvTracefileContext *trace_b = (const LttvTracefileContext *)b; |
42 | |
43 | if(likely(trace_a != trace_b)) { |
44 | comparison = ltt_time_compare(trace_a->timestamp, trace_b->timestamp); |
45 | if(unlikely(comparison == 0)) { |
46 | if(trace_a->index < trace_b->index) comparison = -1; |
47 | else if(trace_a->index > trace_b->index) comparison = 1; |
48 | else if(trace_a->t_context->index < trace_b->t_context->index) |
49 | comparison = -1; |
50 | else if(trace_a->t_context->index > trace_b->t_context->index) |
51 | comparison = 1; |
52 | } |
53 | } |
54 | return comparison; |
55 | } |
56 | |
57 | typedef struct _LttvTracefileContextPosition { |
58 | LttEventPosition *event; |
59 | LttvTracefileContext *tfc; |
60 | gboolean used; /* Tells if the tfc is at end of traceset position */ |
61 | } LttvTracefileContextPosition; |
62 | |
63 | |
64 | struct _LttvTracesetContextPosition { |
65 | GArray *tfcp; /* Array of LttvTracefileContextPosition */ |
66 | LttTime timestamp; /* Current time at the saved position */ |
67 | /* If ltt_time_infinite : no position is |
68 | * set, else, a position is set (may be end |
69 | * of trace, with ep->len == 0) */ |
70 | }; |
71 | |
72 | void lttv_context_init(LttvTracesetContext *self, LttvTraceset *ts) |
73 | { |
74 | LTTV_TRACESET_CONTEXT_GET_CLASS(self)->init(self, ts); |
75 | } |
76 | |
77 | |
78 | void lttv_context_fini(LttvTracesetContext *self) |
79 | { |
80 | LTTV_TRACESET_CONTEXT_GET_CLASS(self)->fini(self); |
81 | } |
82 | |
83 | |
84 | LttvTracesetContext * |
85 | lttv_context_new_traceset_context(LttvTracesetContext *self) |
86 | { |
87 | return LTTV_TRACESET_CONTEXT_GET_CLASS(self)->new_traceset_context(self); |
88 | } |
89 | |
90 | |
91 | |
92 | |
93 | LttvTraceContext * |
94 | lttv_context_new_trace_context(LttvTracesetContext *self) |
95 | { |
96 | return LTTV_TRACESET_CONTEXT_GET_CLASS(self)->new_trace_context(self); |
97 | } |
98 | |
99 | |
100 | LttvTracefileContext * |
101 | lttv_context_new_tracefile_context(LttvTracesetContext *self) |
102 | { |
103 | return LTTV_TRACESET_CONTEXT_GET_CLASS(self)->new_tracefile_context(self); |
104 | } |
105 | |
106 | /**************************************************************************** |
107 | * lttv_traceset_context_compute_time_span |
108 | * |
109 | * Keep the time span is sync with on the fly addition and removal of traces |
110 | * in a trace set. It must be called each time a trace is added/removed from |
111 | * the traceset. It could be more efficient to call it only once a bunch |
112 | * of traces are loaded, but the calculation is not long, so it's not |
113 | * critical. |
114 | * |
115 | * Author : Xang Xiu Yang |
116 | ***************************************************************************/ |
117 | static void lttv_traceset_context_compute_time_span( |
118 | LttvTracesetContext *self, |
119 | TimeInterval *time_span) |
120 | { |
121 | LttvTraceset * traceset = self->ts; |
122 | int numTraces = lttv_traceset_number(traceset); |
123 | int i; |
124 | LttTime s, e; |
125 | LttvTraceContext *tc; |
126 | LttTrace * trace; |
127 | |
128 | time_span->start_time.tv_sec = 0; |
129 | time_span->start_time.tv_nsec = 0; |
130 | time_span->end_time.tv_sec = 0; |
131 | time_span->end_time.tv_nsec = 0; |
132 | |
133 | for(i=0; i<numTraces;i++){ |
134 | tc = self->traces[i]; |
135 | trace = tc->t; |
136 | |
137 | ltt_trace_time_span_get(trace, &s, &e); |
138 | tc->time_span.start_time = s; |
139 | tc->time_span.end_time = e; |
140 | |
141 | if(i==0){ |
142 | time_span->start_time = s; |
143 | time_span->end_time = e; |
144 | }else{ |
145 | if(s.tv_sec < time_span->start_time.tv_sec |
146 | || (s.tv_sec == time_span->start_time.tv_sec |
147 | && s.tv_nsec < time_span->start_time.tv_nsec)) |
148 | time_span->start_time = s; |
149 | if(e.tv_sec > time_span->end_time.tv_sec |
150 | || (e.tv_sec == time_span->end_time.tv_sec |
151 | && e.tv_nsec > time_span->end_time.tv_nsec)) |
152 | time_span->end_time = e; |
153 | } |
154 | } |
155 | } |
156 | |
157 | static void init_tracefile_context(LttTracefile *tracefile, |
158 | LttvTraceContext *tc) |
159 | { |
160 | LttvTracefileContext *tfc; |
161 | LttvTracesetContext *tsc = tc->ts_context; |
162 | |
163 | tfc = LTTV_TRACESET_CONTEXT_GET_CLASS(tsc)->new_tracefile_context(tsc); |
164 | |
165 | tfc->index = tc->tracefiles->len; |
166 | tc->tracefiles = g_array_append_val(tc->tracefiles, tfc); |
167 | |
168 | tfc->tf = tracefile; |
169 | |
170 | tfc->t_context = tc; |
171 | tfc->event = lttv_hooks_new(); |
172 | tfc->event_by_id = lttv_hooks_by_id_new(); |
173 | tfc->a = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL); |
174 | tfc->target_pid = -1; |
175 | } |
176 | |
177 | |
178 | static void |
179 | init(LttvTracesetContext *self, LttvTraceset *ts) |
180 | { |
181 | guint i, nb_trace; |
182 | |
183 | LttvTraceContext *tc; |
184 | |
185 | GData **tracefiles_groups; |
186 | |
187 | struct compute_tracefile_group_args args; |
188 | |
189 | nb_trace = lttv_traceset_number(ts); |
190 | self->ts = ts; |
191 | self->traces = g_new(LttvTraceContext *, nb_trace); |
192 | self->a = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL); |
193 | self->ts_a = lttv_traceset_attribute(ts); |
194 | for(i = 0 ; i < nb_trace ; i++) { |
195 | tc = LTTV_TRACESET_CONTEXT_GET_CLASS(self)->new_trace_context(self); |
196 | self->traces[i] = tc; |
197 | |
198 | tc->ts_context = self; |
199 | tc->index = i; |
200 | tc->vt = lttv_traceset_get(ts, i); |
201 | tc->t = lttv_trace(tc->vt); |
202 | tc->a = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL); |
203 | tc->t_a = lttv_trace_attribute(tc->vt); |
204 | tc->tracefiles = g_array_sized_new(FALSE, TRUE, |
205 | sizeof(LttvTracefileContext*), 10); |
206 | |
207 | tracefiles_groups = ltt_trace_get_tracefiles_groups(tc->t); |
208 | if(tracefiles_groups != NULL) { |
209 | args.func = (ForEachTraceFileFunc)init_tracefile_context; |
210 | args.func_args = tc; |
211 | |
212 | g_datalist_foreach(tracefiles_groups, |
213 | (GDataForeachFunc)compute_tracefile_group, |
214 | &args); |
215 | } |
216 | |
217 | #if 0 |
218 | nb_control = ltt_trace_control_tracefile_number(tc->t); |
219 | nb_per_cpu = ltt_trace_per_cpu_tracefile_number(tc->t); |
220 | nb_tracefile = nb_control + nb_per_cpu; |
221 | tc->tracefiles = g_new(LttvTracefileContext *, nb_tracefile); |
222 | |
223 | for(j = 0 ; j < nb_tracefile ; j++) { |
224 | tfc = LTTV_TRACESET_CONTEXT_GET_CLASS(self)->new_tracefile_context(self); |
225 | tc->tracefiles[j] = tfc; |
226 | tfc->index = j; |
227 | |
228 | if(j < nb_control) { |
229 | tfc->control = TRUE; |
230 | tfc->tf = ltt_trace_control_tracefile_get(tc->t, j); |
231 | } |
232 | else { |
233 | tfc->control = FALSE; |
234 | tfc->tf = ltt_trace_per_cpu_tracefile_get(tc->t, j - nb_control); |
235 | } |
236 | |
237 | tfc->t_context = tc; |
238 | tfc->e = ltt_event_new(); |
239 | tfc->event = lttv_hooks_new(); |
240 | tfc->event_by_id = lttv_hooks_by_id_new(); |
241 | tfc->a = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL); |
242 | } |
243 | #endif //0 |
244 | |
245 | } |
246 | self->sync_position = lttv_traceset_context_position_new(self); |
247 | self->pqueue = g_tree_new(compare_tracefile); |
248 | lttv_process_traceset_seek_time(self, ltt_time_zero); |
249 | lttv_traceset_context_compute_time_span(self, &self->time_span); |
250 | |
251 | } |
252 | |
253 | |
254 | void fini(LttvTracesetContext *self) |
255 | { |
256 | guint i, j, nb_trace, nb_tracefile; |
257 | |
258 | LttvTraceContext *tc; |
259 | |
260 | LttvTracefileContext **tfc; |
261 | |
262 | LttvTraceset *ts = self->ts; |
263 | |
264 | g_tree_destroy(self->pqueue); |
265 | g_object_unref(self->a); |
266 | lttv_traceset_context_position_destroy(self->sync_position); |
267 | |
268 | nb_trace = lttv_traceset_number(ts); |
269 | |
270 | for(i = 0 ; i < nb_trace ; i++) { |
271 | tc = self->traces[i]; |
272 | |
273 | g_object_unref(tc->a); |
274 | |
275 | nb_tracefile = tc->tracefiles->len; |
276 | |
277 | for(j = 0 ; j < nb_tracefile ; j++) { |
278 | tfc = &g_array_index(tc->tracefiles, LttvTracefileContext*, j); |
279 | lttv_hooks_destroy((*tfc)->event); |
280 | lttv_hooks_by_id_destroy((*tfc)->event_by_id); |
281 | g_object_unref((*tfc)->a); |
282 | g_object_unref(*tfc); |
283 | } |
284 | g_array_free(tc->tracefiles, TRUE); |
285 | g_object_unref(tc); |
286 | } |
287 | g_free(self->traces); |
288 | } |
289 | |
290 | |
291 | void lttv_traceset_context_add_hooks(LttvTracesetContext *self, |
292 | LttvHooks *before_traceset, |
293 | LttvHooks *before_trace, |
294 | LttvHooks *before_tracefile, |
295 | LttvHooks *event, |
296 | LttvHooksById *event_by_id) |
297 | { |
298 | LttvTraceset *ts = self->ts; |
299 | |
300 | guint i, nb_trace; |
301 | |
302 | LttvTraceContext *tc; |
303 | |
304 | lttv_hooks_call(before_traceset, self); |
305 | |
306 | nb_trace = lttv_traceset_number(ts); |
307 | |
308 | for(i = 0 ; i < nb_trace ; i++) { |
309 | tc = self->traces[i]; |
310 | lttv_trace_context_add_hooks(tc, |
311 | before_trace, |
312 | before_tracefile, |
313 | event, |
314 | event_by_id); |
315 | } |
316 | } |
317 | |
318 | |
319 | void lttv_traceset_context_remove_hooks(LttvTracesetContext *self, |
320 | LttvHooks *after_traceset, |
321 | LttvHooks *after_trace, |
322 | LttvHooks *after_tracefile, |
323 | LttvHooks *event, |
324 | LttvHooksById *event_by_id) |
325 | { |
326 | |
327 | LttvTraceset *ts = self->ts; |
328 | |
329 | guint i, nb_trace; |
330 | |
331 | LttvTraceContext *tc; |
332 | |
333 | nb_trace = lttv_traceset_number(ts); |
334 | |
335 | for(i = 0 ; i < nb_trace ; i++) { |
336 | tc = self->traces[i]; |
337 | lttv_trace_context_remove_hooks(tc, |
338 | after_trace, |
339 | after_tracefile, |
340 | event, |
341 | event_by_id); |
342 | } |
343 | |
344 | lttv_hooks_call(after_traceset, self); |
345 | |
346 | |
347 | } |
348 | |
349 | void lttv_trace_context_add_hooks(LttvTraceContext *self, |
350 | LttvHooks *before_trace, |
351 | LttvHooks *before_tracefile, |
352 | LttvHooks *event, |
353 | LttvHooksById *event_by_id) |
354 | { |
355 | guint i, nb_tracefile; |
356 | |
357 | LttvTracefileContext **tfc; |
358 | |
359 | lttv_hooks_call(before_trace, self); |
360 | |
361 | nb_tracefile = self->tracefiles->len; |
362 | |
363 | for(i = 0 ; i < nb_tracefile ; i++) { |
364 | tfc = &g_array_index(self->tracefiles, LttvTracefileContext*, i); |
365 | lttv_tracefile_context_add_hooks(*tfc, |
366 | before_tracefile, |
367 | event, |
368 | event_by_id); |
369 | } |
370 | } |
371 | |
372 | |
373 | |
374 | void lttv_trace_context_remove_hooks(LttvTraceContext *self, |
375 | LttvHooks *after_trace, |
376 | LttvHooks *after_tracefile, |
377 | LttvHooks *event, |
378 | LttvHooksById *event_by_id) |
379 | { |
380 | guint i, nb_tracefile; |
381 | |
382 | LttvTracefileContext **tfc; |
383 | |
384 | nb_tracefile = self->tracefiles->len; |
385 | |
386 | for(i = 0 ; i < nb_tracefile ; i++) { |
387 | tfc = &g_array_index(self->tracefiles, LttvTracefileContext*, i); |
388 | lttv_tracefile_context_remove_hooks(*tfc, |
389 | after_tracefile, |
390 | event, |
391 | event_by_id); |
392 | } |
393 | |
394 | lttv_hooks_call(after_trace, self); |
395 | } |
396 | |
397 | void lttv_tracefile_context_add_hooks(LttvTracefileContext *self, |
398 | LttvHooks *before_tracefile, |
399 | LttvHooks *event, |
400 | LttvHooksById *event_by_id) |
401 | { |
402 | guint i, index; |
403 | |
404 | LttvHooks *hook; |
405 | |
406 | lttv_hooks_call(before_tracefile, self); |
407 | lttv_hooks_add_list(self->event, event); |
408 | if(event_by_id != NULL) { |
409 | for(i = 0; i < event_by_id->array->len; i++) { |
410 | index = g_array_index(event_by_id->array, guint, i); |
411 | hook = lttv_hooks_by_id_find(self->event_by_id, index); |
412 | lttv_hooks_add_list(hook, lttv_hooks_by_id_get(event_by_id, index)); |
413 | } |
414 | } |
415 | } |
416 | |
417 | void lttv_tracefile_context_remove_hooks(LttvTracefileContext *self, |
418 | LttvHooks *after_tracefile, |
419 | LttvHooks *event, |
420 | LttvHooksById *event_by_id) |
421 | { |
422 | guint i, index; |
423 | |
424 | LttvHooks *hook; |
425 | |
426 | lttv_hooks_remove_list(self->event, event); |
427 | if(event_by_id != NULL) { |
428 | for(i = 0; i < event_by_id->array->len; i++) { |
429 | index = g_array_index(event_by_id->array, guint, i); |
430 | hook = lttv_hooks_by_id_get(self->event_by_id, index); |
431 | if(hook != NULL) |
432 | lttv_hooks_remove_list(hook, lttv_hooks_by_id_get(event_by_id, index)); |
433 | } |
434 | } |
435 | |
436 | lttv_hooks_call(after_tracefile, self); |
437 | } |
438 | |
439 | |
440 | |
441 | void lttv_tracefile_context_add_hooks_by_id(LttvTracefileContext *tfc, |
442 | unsigned i, |
443 | LttvHooks *event_by_id) |
444 | { |
445 | LttvHooks * h; |
446 | h = lttv_hooks_by_id_find(tfc->event_by_id, i); |
447 | lttv_hooks_add_list(h, event_by_id); |
448 | } |
449 | |
450 | void lttv_tracefile_context_remove_hooks_by_id(LttvTracefileContext *tfc, |
451 | unsigned i) |
452 | { |
453 | lttv_hooks_by_id_remove(tfc->event_by_id, i); |
454 | } |
455 | |
456 | static LttvTracesetContext * |
457 | new_traceset_context(LttvTracesetContext *self) |
458 | { |
459 | return g_object_new(LTTV_TRACESET_CONTEXT_TYPE, NULL); |
460 | } |
461 | |
462 | |
463 | static LttvTraceContext * |
464 | new_trace_context(LttvTracesetContext *self) |
465 | { |
466 | return g_object_new(LTTV_TRACE_CONTEXT_TYPE, NULL); |
467 | } |
468 | |
469 | |
470 | static LttvTracefileContext * |
471 | new_tracefile_context(LttvTracesetContext *self) |
472 | { |
473 | return g_object_new(LTTV_TRACEFILE_CONTEXT_TYPE, NULL); |
474 | } |
475 | |
476 | |
477 | static void |
478 | traceset_context_instance_init (GTypeInstance *instance, gpointer g_class) |
479 | { |
480 | /* Be careful of anything which would not work well with shallow copies */ |
481 | } |
482 | |
483 | |
484 | static void |
485 | traceset_context_finalize (LttvTracesetContext *self) |
486 | { |
487 | G_OBJECT_CLASS(g_type_class_peek(g_type_parent(LTTV_TRACESET_CONTEXT_TYPE))) |
488 | ->finalize(G_OBJECT(self)); |
489 | } |
490 | |
491 | |
492 | static void |
493 | traceset_context_class_init (LttvTracesetContextClass *klass) |
494 | { |
495 | GObjectClass *gobject_class = G_OBJECT_CLASS(klass); |
496 | |
497 | gobject_class->finalize = (void (*)(GObject *self))traceset_context_finalize; |
498 | klass->init = init; |
499 | klass->fini = fini; |
500 | klass->new_traceset_context = new_traceset_context; |
501 | klass->new_trace_context = new_trace_context; |
502 | klass->new_tracefile_context = new_tracefile_context; |
503 | } |
504 | |
505 | |
506 | GType |
507 | lttv_traceset_context_get_type(void) |
508 | { |
509 | static GType type = 0; |
510 | if (type == 0) { |
511 | static const GTypeInfo info = { |
512 | sizeof (LttvTracesetContextClass), |
513 | NULL, /* base_init */ |
514 | NULL, /* base_finalize */ |
515 | (GClassInitFunc) traceset_context_class_init, /* class_init */ |
516 | NULL, /* class_finalize */ |
517 | NULL, /* class_data */ |
518 | sizeof (LttvTracesetContext), |
519 | 0, /* n_preallocs */ |
520 | (GInstanceInitFunc) traceset_context_instance_init, /* instance_init */ |
521 | NULL /* Value handling */ |
522 | }; |
523 | |
524 | type = g_type_register_static (G_TYPE_OBJECT, "LttvTracesetContextType", |
525 | &info, 0); |
526 | } |
527 | return type; |
528 | } |
529 | |
530 | |
531 | static void |
532 | trace_context_instance_init (GTypeInstance *instance, gpointer g_class) |
533 | { |
534 | /* Be careful of anything which would not work well with shallow copies */ |
535 | } |
536 | |
537 | |
538 | static void |
539 | trace_context_finalize (LttvTraceContext *self) |
540 | { |
541 | G_OBJECT_CLASS(g_type_class_peek(g_type_parent(LTTV_TRACE_CONTEXT_TYPE)))-> |
542 | finalize(G_OBJECT(self)); |
543 | } |
544 | |
545 | |
546 | static void |
547 | trace_context_class_init (LttvTraceContextClass *klass) |
548 | { |
549 | GObjectClass *gobject_class = G_OBJECT_CLASS(klass); |
550 | |
551 | gobject_class->finalize = (void (*)(GObject *self)) trace_context_finalize; |
552 | } |
553 | |
554 | |
555 | GType |
556 | lttv_trace_context_get_type(void) |
557 | { |
558 | static GType type = 0; |
559 | if (type == 0) { |
560 | static const GTypeInfo info = { |
561 | sizeof (LttvTraceContextClass), |
562 | NULL, /* base_init */ |
563 | NULL, /* base_finalize */ |
564 | (GClassInitFunc) trace_context_class_init, /* class_init */ |
565 | NULL, /* class_finalize */ |
566 | NULL, /* class_data */ |
567 | sizeof (LttvTraceContext), |
568 | 0, /* n_preallocs */ |
569 | (GInstanceInitFunc) trace_context_instance_init, /* instance_init */ |
570 | NULL /* Value handling */ |
571 | }; |
572 | |
573 | type = g_type_register_static (G_TYPE_OBJECT, "LttvTraceContextType", |
574 | &info, 0); |
575 | } |
576 | return type; |
577 | } |
578 | |
579 | |
580 | static void |
581 | tracefile_context_instance_init (GTypeInstance *instance, gpointer g_class) |
582 | { |
583 | /* Be careful of anything which would not work well with shallow copies */ |
584 | } |
585 | |
586 | |
587 | static void |
588 | tracefile_context_finalize (LttvTracefileContext *self) |
589 | { |
590 | G_OBJECT_CLASS(g_type_class_peek(g_type_parent(LTTV_TRACEFILE_CONTEXT_TYPE))) |
591 | ->finalize(G_OBJECT(self)); |
592 | } |
593 | |
594 | |
595 | static void |
596 | tracefile_context_class_init (LttvTracefileContextClass *klass) |
597 | { |
598 | GObjectClass *gobject_class = G_OBJECT_CLASS(klass); |
599 | |
600 | gobject_class->finalize = (void (*)(GObject *self))tracefile_context_finalize; |
601 | } |
602 | |
603 | |
604 | GType |
605 | lttv_tracefile_context_get_type(void) |
606 | { |
607 | static GType type = 0; |
608 | if (type == 0) { |
609 | static const GTypeInfo info = { |
610 | sizeof (LttvTracefileContextClass), |
611 | NULL, /* base_init */ |
612 | NULL, /* base_finalize */ |
613 | (GClassInitFunc) tracefile_context_class_init, /* class_init */ |
614 | NULL, /* class_finalize */ |
615 | NULL, /* class_data */ |
616 | sizeof (LttvTracefileContext), |
617 | 0, /* n_preallocs */ |
618 | (GInstanceInitFunc) tracefile_context_instance_init, /* instance_init */ |
619 | NULL /* Value handling */ |
620 | }; |
621 | |
622 | type = g_type_register_static (G_TYPE_OBJECT, "LttvTracefileContextType", |
623 | &info, 0); |
624 | } |
625 | return type; |
626 | } |
627 | |
628 | |
629 | |
630 | static gboolean get_first(gpointer key, gpointer value, gpointer user_data) { |
631 | g_assert(key == value); |
632 | *((LttvTracefileContext **)user_data) = (LttvTracefileContext *)value; |
633 | return TRUE; |
634 | } |
635 | |
636 | #ifdef DEBUG |
637 | // Test to see if pqueue is traversed in the right order. |
638 | static LttTime test_time; |
639 | |
640 | static gboolean test_tree(gpointer key, gpointer value, gpointer user_data) { |
641 | |
642 | LttvTracefileContext *tfc = (LttvTracefileContext *)key; |
643 | |
644 | g_debug("Tracefile name %s, time %lu.%lu, tfi %u, ti %u", |
645 | g_quark_to_string(ltt_tracefile_name(tfc->tf)), |
646 | tfc->timestamp.tv_sec, tfc->timestamp.tv_nsec, |
647 | tfc->index, tfc->t_context->index); |
648 | |
649 | if(user_data != NULL) { |
650 | if(((LttvTracefileContext *)user_data) == (LttvTracefileContext *)value) { |
651 | g_assert(compare_tracefile(user_data, value) == 0); |
652 | } else |
653 | g_assert(compare_tracefile(user_data, value) != 0); |
654 | } |
655 | g_assert(ltt_time_compare(test_time, tfc->timestamp) <= 0); |
656 | test_time.tv_sec = tfc->timestamp.tv_sec; |
657 | test_time.tv_nsec = tfc->timestamp.tv_nsec; |
658 | |
659 | |
660 | //g_assert(((LttvTracefileContext *)user_data) != (LttvTracefileContext *)value); |
661 | return FALSE; |
662 | } |
663 | #endif //DEBUG |
664 | |
665 | |
666 | |
667 | void lttv_process_traceset_begin(LttvTracesetContext *self, |
668 | LttvHooks *before_traceset, |
669 | LttvHooks *before_trace, |
670 | LttvHooks *before_tracefile, |
671 | LttvHooks *event, |
672 | LttvHooksById *event_by_id) |
673 | { |
674 | |
675 | /* simply add hooks in context. _before hooks are called by add_hooks. */ |
676 | /* It calls all before_traceset, before_trace, and before_tracefile hooks. */ |
677 | lttv_traceset_context_add_hooks(self, |
678 | before_traceset, |
679 | before_trace, |
680 | before_tracefile, |
681 | event, |
682 | event_by_id); |
683 | |
684 | } |
685 | |
686 | //enum read_state { LAST_NONE, LAST_OK, LAST_EMPTY }; |
687 | |
688 | /* Note : a _middle must be preceded from a _seek or another middle */ |
689 | guint lttv_process_traceset_middle(LttvTracesetContext *self, |
690 | LttTime end, |
691 | guint nb_events, |
692 | const LttvTracesetContextPosition *end_position) |
693 | { |
694 | GTree *pqueue = self->pqueue; |
695 | |
696 | guint fac_id, ev_id, id; |
697 | |
698 | LttvTracefileContext *tfc; |
699 | |
700 | LttEvent *e; |
701 | |
702 | unsigned count = 0; |
703 | |
704 | guint read_ret; |
705 | |
706 | //enum read_state last_read_state = LAST_NONE; |
707 | |
708 | gint last_ret = 0; /* return value of the last hook list called */ |
709 | |
710 | /* Get the next event from the pqueue, call its hooks, |
711 | reinsert in the pqueue the following event from the same tracefile |
712 | unless the tracefile is finished or the event is later than the |
713 | end time. */ |
714 | |
715 | while(TRUE) { |
716 | tfc = NULL; |
717 | g_tree_foreach(pqueue, get_first, &tfc); |
718 | /* End of traceset : tfc is NULL */ |
719 | if(unlikely(tfc == NULL)) |
720 | { |
721 | return count; |
722 | } |
723 | |
724 | /* Have we reached : |
725 | * - the maximum number of events specified? |
726 | * - the end position ? |
727 | * - the end time ? |
728 | * then the read is finished. We leave the queue in the same state and |
729 | * break the loop. |
730 | */ |
731 | |
732 | if(unlikely(last_ret == TRUE || |
733 | ((count >= nb_events) && (nb_events != G_MAXULONG)) || |
734 | (end_position!=NULL&<tv_traceset_context_ctx_pos_compare(self, |
735 | end_position) == 0)|| |
736 | ltt_time_compare(end, tfc->timestamp) <= 0)) |
737 | { |
738 | return count; |
739 | } |
740 | |
741 | /* Get the tracefile with an event for the smallest time found. If two |
742 | or more tracefiles have events for the same time, hope that lookup |
743 | and remove are consistent. */ |
744 | |
745 | #ifdef DEBUG |
746 | test_time.tv_sec = 0; |
747 | test_time.tv_nsec = 0; |
748 | g_debug("test tree before remove"); |
749 | g_tree_foreach(pqueue, test_tree, tfc); |
750 | #endif //DEBUG |
751 | g_tree_remove(pqueue, tfc); |
752 | |
753 | #ifdef DEBUG |
754 | test_time.tv_sec = 0; |
755 | test_time.tv_nsec = 0; |
756 | g_debug("test tree after remove"); |
757 | g_tree_foreach(pqueue, test_tree, tfc); |
758 | #endif //DEBUG |
759 | |
760 | |
761 | e = ltt_tracefile_get_event(tfc->tf); |
762 | |
763 | //if(last_read_state != LAST_EMPTY) { |
764 | /* Only call hooks if the last read has given an event or if we are at the |
765 | * first pass (not if last read returned end of tracefile) */ |
766 | count++; |
767 | |
768 | fac_id = ltt_event_facility_id(e); |
769 | ev_id = ltt_event_eventtype_id(e); |
770 | id = GET_HOOK_ID(fac_id, ev_id); |
771 | tfc->target_pid = -1; /* unset target PID */ |
772 | /* Hooks : |
773 | * return values : 0 : continue read, 1 : go to next position and stop read, |
774 | * 2 : stay at the current position and stop read */ |
775 | last_ret = lttv_hooks_call_merge(tfc->event, tfc, |
776 | lttv_hooks_by_id_get(tfc->event_by_id, id), tfc); |
777 | |
778 | #if 0 |
779 | /* This is buggy : it won't work well with state computation */ |
780 | if(unlikely(last_ret == 2)) { |
781 | /* This is a case where we want to stay at this position and stop read. */ |
782 | g_tree_insert(pqueue, tfc, tfc); |
783 | return count - 1; |
784 | } |
785 | #endif //0 |
786 | read_ret = ltt_tracefile_read(tfc->tf); |
787 | |
788 | |
789 | if(likely(!read_ret)) { |
790 | //g_debug("An event is ready"); |
791 | tfc->timestamp = ltt_event_time(e); |
792 | g_assert(ltt_time_compare(tfc->timestamp, ltt_time_infinite) != 0); |
793 | g_tree_insert(pqueue, tfc, tfc); |
794 | #ifdef DEBUG |
795 | test_time.tv_sec = 0; |
796 | test_time.tv_nsec = 0; |
797 | g_debug("test tree after event ready"); |
798 | g_tree_foreach(pqueue, test_tree, NULL); |
799 | #endif //DEBUG |
800 | |
801 | //last_read_state = LAST_OK; |
802 | } else { |
803 | tfc->timestamp = ltt_time_infinite; |
804 | |
805 | if(read_ret == ERANGE) { |
806 | // last_read_state = LAST_EMPTY; |
807 | g_debug("End of trace"); |
808 | } else |
809 | g_error("Error happened in lttv_process_traceset_middle"); |
810 | } |
811 | } |
812 | } |
813 | |
814 | |
815 | void lttv_process_traceset_end(LttvTracesetContext *self, |
816 | LttvHooks *after_traceset, |
817 | LttvHooks *after_trace, |
818 | LttvHooks *after_tracefile, |
819 | LttvHooks *event, |
820 | LttvHooksById *event_by_id) |
821 | { |
822 | /* Remove hooks from context. _after hooks are called by remove_hooks. */ |
823 | /* It calls all after_traceset, after_trace, and after_tracefile hooks. */ |
824 | lttv_traceset_context_remove_hooks(self, |
825 | after_traceset, |
826 | after_trace, |
827 | after_tracefile, |
828 | event, |
829 | event_by_id); |
830 | } |
831 | |
832 | /* Subtile modification : |
833 | * if tracefile has no event at or after the time requested, it is not put in |
834 | * the queue, as the next read would fail. |
835 | * |
836 | * Don't forget to empty the traceset pqueue before calling this. |
837 | */ |
838 | void lttv_process_trace_seek_time(LttvTraceContext *self, LttTime start) |
839 | { |
840 | guint i, nb_tracefile; |
841 | |
842 | gint ret; |
843 | |
844 | LttvTracefileContext **tfc; |
845 | |
846 | nb_tracefile = self->tracefiles->len; |
847 | |
848 | GTree *pqueue = self->ts_context->pqueue; |
849 | |
850 | for(i = 0 ; i < nb_tracefile ; i++) { |
851 | tfc = &g_array_index(self->tracefiles, LttvTracefileContext*, i); |
852 | |
853 | g_tree_remove(pqueue, *tfc); |
854 | |
855 | ret = ltt_tracefile_seek_time((*tfc)->tf, start); |
856 | if(ret == EPERM) g_error("error in lttv_process_trace_seek_time seek"); |
857 | |
858 | if(ret == 0) { /* not ERANGE especially */ |
859 | (*tfc)->timestamp = ltt_event_time(ltt_tracefile_get_event((*tfc)->tf)); |
860 | g_assert(ltt_time_compare((*tfc)->timestamp, ltt_time_infinite) != 0); |
861 | g_tree_insert(pqueue, (*tfc), (*tfc)); |
862 | } else { |
863 | (*tfc)->timestamp = ltt_time_infinite; |
864 | } |
865 | } |
866 | #ifdef DEBUG |
867 | test_time.tv_sec = 0; |
868 | test_time.tv_nsec = 0; |
869 | g_debug("test tree after seek_time"); |
870 | g_tree_foreach(pqueue, test_tree, NULL); |
871 | #endif //DEBUG |
872 | |
873 | |
874 | |
875 | } |
876 | |
877 | |
878 | void lttv_process_traceset_seek_time(LttvTracesetContext *self, LttTime start) |
879 | { |
880 | guint i, nb_trace; |
881 | |
882 | LttvTraceContext *tc; |
883 | |
884 | //g_tree_destroy(self->pqueue); |
885 | //self->pqueue = g_tree_new(compare_tracefile); |
886 | |
887 | nb_trace = lttv_traceset_number(self->ts); |
888 | for(i = 0 ; i < nb_trace ; i++) { |
889 | tc = self->traces[i]; |
890 | lttv_process_trace_seek_time(tc, start); |
891 | } |
892 | } |
893 | |
894 | |
895 | gboolean lttv_process_traceset_seek_position(LttvTracesetContext *self, |
896 | const LttvTracesetContextPosition *pos) |
897 | { |
898 | guint i; |
899 | /* If a position is set, seek the traceset to this position */ |
900 | if(ltt_time_compare(pos->timestamp, ltt_time_infinite) != 0) { |
901 | |
902 | /* Test to see if the traces has been added to the trace set : |
903 | * It should NEVER happen. Clear all positions if a new trace comes in. */ |
904 | /* FIXME I know this test is not optimal : should keep a number of |
905 | * tracefiles variable in the traceset.. eventually */ |
906 | guint num_traces = lttv_traceset_number(self->ts); |
907 | guint tf_count = 0; |
908 | for(i=0; i<num_traces;i++) { |
909 | GArray * tracefiles = self->traces[i]->tracefiles; |
910 | guint j; |
911 | guint num_tracefiles = tracefiles->len; |
912 | for(j=0;j<num_tracefiles;j++) |
913 | tf_count++; |
914 | } |
915 | g_assert(tf_count == pos->tfcp->len); |
916 | |
917 | |
918 | //g_tree_destroy(self->pqueue); |
919 | //self->pqueue = g_tree_new(compare_tracefile); |
920 | |
921 | for(i=0;i<pos->tfcp->len; i++) { |
922 | LttvTracefileContextPosition *tfcp = |
923 | &g_array_index(pos->tfcp, LttvTracefileContextPosition, i); |
924 | |
925 | g_tree_remove(self->pqueue, tfcp->tfc); |
926 | |
927 | if(tfcp->used == TRUE) { |
928 | if(ltt_tracefile_seek_position(tfcp->tfc->tf, tfcp->event) != 0) |
929 | return 1; |
930 | tfcp->tfc->timestamp = |
931 | ltt_event_time(ltt_tracefile_get_event(tfcp->tfc->tf)); |
932 | g_assert(ltt_time_compare(tfcp->tfc->timestamp, |
933 | ltt_time_infinite) != 0); |
934 | g_tree_insert(self->pqueue, tfcp->tfc, tfcp->tfc); |
935 | |
936 | } else { |
937 | tfcp->tfc->timestamp = ltt_time_infinite; |
938 | } |
939 | } |
940 | } |
941 | #ifdef DEBUG |
942 | test_time.tv_sec = 0; |
943 | test_time.tv_nsec = 0; |
944 | g_debug("test tree after seek_position"); |
945 | g_tree_foreach(self->pqueue, test_tree, NULL); |
946 | #endif //DEBUG |
947 | |
948 | |
949 | |
950 | return 0; |
951 | } |
952 | |
953 | |
954 | |
955 | static LttField * |
956 | find_field(LttEventType *et, const GQuark field) |
957 | { |
958 | GQuark name; |
959 | |
960 | if(field == 0) return NULL; |
961 | |
962 | return ltt_eventtype_field_by_name(et, field); |
963 | } |
964 | |
965 | LttvTraceHookByFacility *lttv_trace_hook_get_fac(LttvTraceHook *th, |
966 | guint facility_id) |
967 | { |
968 | return &g_array_index(th->fac_index, LttvTraceHookByFacility, facility_id); |
969 | } |
970 | |
971 | /* Get the first facility corresponding to the name. As the types must be |
972 | * compatible, it is relevant to use the field name and sizes of the first |
973 | * facility to create data structures and assume the data will be compatible |
974 | * thorough the trace */ |
975 | LttvTraceHookByFacility *lttv_trace_hook_get_first(LttvTraceHook *th) |
976 | { |
977 | g_assert(th->fac_list->len > 0); |
978 | return g_array_index(th->fac_list, LttvTraceHookByFacility*, 0); |
979 | } |
980 | |
981 | |
982 | /* Returns 0 on success, -1 if fails. */ |
983 | gint |
984 | lttv_trace_find_hook(LttTrace *t, GQuark facility, GQuark event, |
985 | GQuark field1, GQuark field2, GQuark field3, LttvHook h, gpointer hook_data, |
986 | LttvTraceHook *th) |
987 | { |
988 | LttFacility *f; |
989 | |
990 | LttEventType *et, *first_et; |
991 | |
992 | GArray *facilities; |
993 | |
994 | guint i, fac_id, ev_id; |
995 | |
996 | LttvTraceHookByFacility *thf, *first_thf; |
997 | |
998 | facilities = ltt_trace_facility_get_by_name(t, facility); |
999 | |
1000 | if(unlikely(facilities == NULL)) goto facility_error; |
1001 | |
1002 | th->fac_index = g_array_sized_new(FALSE, TRUE, |
1003 | sizeof(LttvTraceHookByFacility), |
1004 | NUM_FACILITIES); |
1005 | th->fac_index = g_array_set_size(th->fac_index, NUM_FACILITIES); |
1006 | |
1007 | th->fac_list = g_array_sized_new(FALSE, TRUE, |
1008 | sizeof(LttvTraceHookByFacility*), |
1009 | facilities->len); |
1010 | th->fac_list = g_array_set_size(th->fac_list, facilities->len); |
1011 | |
1012 | fac_id = g_array_index(facilities, guint, 0); |
1013 | f = ltt_trace_get_facility_by_num(t, fac_id); |
1014 | |
1015 | et = ltt_facility_eventtype_get_by_name(f, event); |
1016 | if(unlikely(et == NULL)) goto event_error; |
1017 | |
1018 | thf = &g_array_index(th->fac_index, LttvTraceHookByFacility, fac_id); |
1019 | g_array_index(th->fac_list, LttvTraceHookByFacility*, 0) = thf; |
1020 | |
1021 | ev_id = ltt_eventtype_id(et); |
1022 | |
1023 | thf->h = h; |
1024 | thf->id = GET_HOOK_ID(fac_id, ev_id); |
1025 | thf->f1 = find_field(et, field1); |
1026 | thf->f2 = find_field(et, field2); |
1027 | thf->f3 = find_field(et, field3); |
1028 | thf->hook_data = hook_data; |
1029 | |
1030 | first_thf = thf; |
1031 | first_et = et; |
1032 | |
1033 | /* Check for type compatibility too */ |
1034 | for(i=1;i<facilities->len;i++) { |
1035 | fac_id = g_array_index(facilities, guint, i); |
1036 | f = ltt_trace_get_facility_by_num(t, fac_id); |
1037 | |
1038 | et = ltt_facility_eventtype_get_by_name(f, event); |
1039 | if(unlikely(et == NULL)) goto event_error; |
1040 | |
1041 | thf = &g_array_index(th->fac_index, LttvTraceHookByFacility, fac_id); |
1042 | g_array_index(th->fac_list, LttvTraceHookByFacility*, i) = thf; |
1043 | ev_id = ltt_eventtype_id(et); |
1044 | thf->h = h; |
1045 | thf->id = GET_HOOK_ID(fac_id, ev_id); |
1046 | thf->f1 = find_field(et, field1); |
1047 | if(check_fields_compatibility(first_et, et, |
1048 | first_thf->f1, thf->f1)) |
1049 | goto type_error; |
1050 | |
1051 | thf->f2 = find_field(et, field2); |
1052 | if(check_fields_compatibility(first_et, et, |
1053 | first_thf->f2, thf->f2)) |
1054 | goto type_error; |
1055 | |
1056 | thf->f3 = find_field(et, field3); |
1057 | if(check_fields_compatibility(first_et, et, |
1058 | first_thf->f3, thf->f3)) |
1059 | goto type_error; |
1060 | thf->hook_data = hook_data; |
1061 | } |
1062 | |
1063 | return 0; |
1064 | |
1065 | type_error: |
1066 | goto free; |
1067 | event_error: |
1068 | g_error("Event type does not exist for event %s", |
1069 | g_quark_to_string(event)); |
1070 | goto free; |
1071 | facility_error: |
1072 | //Ignore this type of error : some facilities are not required. |
1073 | //g_error("No %s facility", g_quark_to_string(facility)); |
1074 | return -1; |
1075 | free: |
1076 | g_array_free(th->fac_index, TRUE); |
1077 | g_array_free(th->fac_list, TRUE); |
1078 | th->fac_index = NULL; |
1079 | th->fac_list = NULL; |
1080 | return -1; |
1081 | } |
1082 | |
1083 | void lttv_trace_hook_destroy(LttvTraceHook *th) |
1084 | { |
1085 | g_array_free(th->fac_index, TRUE); |
1086 | g_array_free(th->fac_list, TRUE); |
1087 | } |
1088 | |
1089 | |
1090 | |
1091 | |
1092 | LttvTracesetContextPosition *lttv_traceset_context_position_new( |
1093 | const LttvTracesetContext *self) |
1094 | { |
1095 | guint num_traces = lttv_traceset_number(self->ts); |
1096 | guint tf_count = 0; |
1097 | guint i; |
1098 | |
1099 | for(i=0; i<num_traces;i++) { |
1100 | GArray * tracefiles = self->traces[i]->tracefiles; |
1101 | guint j; |
1102 | guint num_tracefiles = tracefiles->len; |
1103 | for(j=0;j<num_tracefiles;j++) |
1104 | tf_count++; |
1105 | } |
1106 | LttvTracesetContextPosition *pos = |
1107 | g_new(LttvTracesetContextPosition, 1); |
1108 | pos->tfcp = g_array_sized_new(FALSE, TRUE, |
1109 | sizeof(LttvTracefileContextPosition), |
1110 | tf_count); |
1111 | g_array_set_size(pos->tfcp, tf_count); |
1112 | for(i=0;i<pos->tfcp->len;i++) { |
1113 | LttvTracefileContextPosition *tfcp = |
1114 | &g_array_index(pos->tfcp, LttvTracefileContextPosition, i); |
1115 | tfcp->event = ltt_event_position_new(); |
1116 | } |
1117 | |
1118 | pos->timestamp = ltt_time_infinite; |
1119 | return pos; |
1120 | } |
1121 | |
1122 | /* Save all positions, the ones with infinite time will have NULL |
1123 | * ep. */ |
1124 | /* note : a position must be destroyed when a trace is added/removed from a |
1125 | * traceset */ |
1126 | void lttv_traceset_context_position_save(const LttvTracesetContext *self, |
1127 | LttvTracesetContextPosition *pos) |
1128 | { |
1129 | guint i; |
1130 | guint num_traces = lttv_traceset_number(self->ts); |
1131 | guint tf_count = 0; |
1132 | |
1133 | pos->timestamp = ltt_time_infinite; |
1134 | |
1135 | for(i=0; i<num_traces;i++) { |
1136 | GArray * tracefiles = self->traces[i]->tracefiles; |
1137 | guint j; |
1138 | guint num_tracefiles = tracefiles->len; |
1139 | |
1140 | for(j=0;j<num_tracefiles;j++) { |
1141 | g_assert(tf_count < pos->tfcp->len); |
1142 | LttvTracefileContext **tfc = &g_array_index(tracefiles, |
1143 | LttvTracefileContext*, j); |
1144 | LttvTracefileContextPosition *tfcp = |
1145 | &g_array_index(pos->tfcp, LttvTracefileContextPosition, tf_count); |
1146 | |
1147 | tfcp->tfc = *tfc; |
1148 | |
1149 | if(ltt_time_compare((*tfc)->timestamp, ltt_time_infinite) != 0) { |
1150 | LttEvent *event = ltt_tracefile_get_event((*tfc)->tf); |
1151 | ltt_event_position(event, tfcp->event); |
1152 | if(ltt_time_compare((*tfc)->timestamp, pos->timestamp) < 0) |
1153 | pos->timestamp = (*tfc)->timestamp; |
1154 | tfcp->used = TRUE; |
1155 | } else { |
1156 | tfcp->used = FALSE; |
1157 | } |
1158 | |
1159 | //g_array_append_val(pos->tfc, *tfc); |
1160 | //g_array_append_val(pos->ep, ep); |
1161 | tf_count++; |
1162 | } |
1163 | |
1164 | } |
1165 | } |
1166 | |
1167 | void lttv_traceset_context_position_destroy(LttvTracesetContextPosition *pos) |
1168 | { |
1169 | int i; |
1170 | |
1171 | for(i=0;i<pos->tfcp->len;i++) { |
1172 | LttvTracefileContextPosition *tfcp = |
1173 | &g_array_index(pos->tfcp, LttvTracefileContextPosition, i); |
1174 | g_free(tfcp->event); |
1175 | tfcp->event = NULL; |
1176 | tfcp->used = FALSE; |
1177 | } |
1178 | g_array_free(pos->tfcp, TRUE); |
1179 | g_free(pos); |
1180 | } |
1181 | |
1182 | void lttv_traceset_context_position_copy(LttvTracesetContextPosition *dest, |
1183 | const LttvTracesetContextPosition *src) |
1184 | { |
1185 | int i; |
1186 | LttvTracefileContextPosition *src_tfcp, *dest_tfcp; |
1187 | |
1188 | g_assert(src->tfcp->len == src->tfcp->len); |
1189 | |
1190 | for(i=0;i<src->tfcp->len;i++) { |
1191 | src_tfcp = |
1192 | &g_array_index(src->tfcp, LttvTracefileContextPosition, i); |
1193 | dest_tfcp = |
1194 | &g_array_index(dest->tfcp, LttvTracefileContextPosition, i); |
1195 | |
1196 | dest_tfcp->used = src_tfcp->used; |
1197 | dest_tfcp->tfc = src_tfcp->tfc; |
1198 | |
1199 | if(src_tfcp->used) { |
1200 | ltt_event_position_copy( |
1201 | dest_tfcp->event, |
1202 | src_tfcp->event); |
1203 | } |
1204 | } |
1205 | dest->timestamp = src->timestamp; |
1206 | } |
1207 | |
1208 | gint lttv_traceset_context_ctx_pos_compare(const LttvTracesetContext *self, |
1209 | const LttvTracesetContextPosition *pos) |
1210 | { |
1211 | int i; |
1212 | int ret = 0; |
1213 | |
1214 | if(pos->tfcp->len == 0) { |
1215 | if(lttv_traceset_number(self->ts) == 0) return 0; |
1216 | else return 1; |
1217 | } |
1218 | if(lttv_traceset_number(self->ts) == 0) |
1219 | return -1; |
1220 | |
1221 | for(i=0;i<pos->tfcp->len;i++) { |
1222 | LttvTracefileContextPosition *tfcp = |
1223 | &g_array_index(pos->tfcp, LttvTracefileContextPosition, i); |
1224 | |
1225 | if(tfcp->used == FALSE) { |
1226 | if(ltt_time_compare(tfcp->tfc->timestamp, ltt_time_infinite) < 0) { |
1227 | ret = -1; |
1228 | } |
1229 | } else { |
1230 | if(ltt_time_compare(tfcp->tfc->timestamp, ltt_time_infinite) == 0) { |
1231 | ret = 1; |
1232 | } else { |
1233 | LttEvent *event = ltt_tracefile_get_event(tfcp->tfc->tf); |
1234 | |
1235 | ret = ltt_event_position_compare((LttEventPosition*)event, |
1236 | tfcp->event); |
1237 | } |
1238 | } |
1239 | if(ret != 0) return ret; |
1240 | |
1241 | } |
1242 | return 0; |
1243 | } |
1244 | |
1245 | |
1246 | gint lttv_traceset_context_pos_pos_compare( |
1247 | const LttvTracesetContextPosition *pos1, |
1248 | const LttvTracesetContextPosition *pos2) |
1249 | { |
1250 | int i, j; |
1251 | int ret = 0; |
1252 | |
1253 | if(ltt_time_compare(pos1->timestamp, ltt_time_infinite) == 0) { |
1254 | if(ltt_time_compare(pos2->timestamp, ltt_time_infinite) == 0) |
1255 | return 0; |
1256 | else |
1257 | return 1; |
1258 | } |
1259 | if(ltt_time_compare(pos2->timestamp, ltt_time_infinite) == 0) |
1260 | return -1; |
1261 | |
1262 | for(i=0;i<pos1->tfcp->len;i++) { |
1263 | LttvTracefileContextPosition *tfcp1 = |
1264 | &g_array_index(pos1->tfcp, LttvTracefileContextPosition, i); |
1265 | |
1266 | if(tfcp1->used == TRUE) { |
1267 | for(j=0;j<pos2->tfcp->len;j++) { |
1268 | LttvTracefileContextPosition *tfcp2 = |
1269 | &g_array_index(pos2->tfcp, LttvTracefileContextPosition, j); |
1270 | |
1271 | if(tfcp1->tfc == tfcp2->tfc) { |
1272 | if(tfcp2->used == TRUE) |
1273 | ret = ltt_event_position_compare(tfcp1->event, tfcp2->event); |
1274 | else |
1275 | ret = -1; |
1276 | |
1277 | if(ret != 0) return ret; |
1278 | } |
1279 | } |
1280 | |
1281 | } else { |
1282 | for(j=0;j<pos2->tfcp->len;j++) { |
1283 | LttvTracefileContextPosition *tfcp2 = |
1284 | &g_array_index(pos2->tfcp, LttvTracefileContextPosition, j); |
1285 | |
1286 | if(tfcp1->tfc == tfcp2->tfc) |
1287 | if(tfcp2->used == TRUE) ret = 1; |
1288 | if(ret != 0) return ret; |
1289 | } |
1290 | } |
1291 | } |
1292 | return 0; |
1293 | } |
1294 | |
1295 | |
1296 | LttTime lttv_traceset_context_position_get_time( |
1297 | const LttvTracesetContextPosition *pos) |
1298 | { |
1299 | return pos->timestamp; |
1300 | } |
1301 | |
1302 | |
1303 | LttvTracefileContext *lttv_traceset_context_get_current_tfc(LttvTracesetContext *self) |
1304 | { |
1305 | GTree *pqueue = self->pqueue; |
1306 | LttvTracefileContext *tfc = NULL; |
1307 | |
1308 | g_tree_foreach(pqueue, get_first, &tfc); |
1309 | |
1310 | return tfc; |
1311 | } |
1312 | |
1313 | /* lttv_process_traceset_synchronize_tracefiles |
1314 | * |
1315 | * Use the sync_position field of the trace set context to synchronize each |
1316 | * tracefile with the previously saved position. |
1317 | * |
1318 | * If no previous position has been saved, it simply does nothing. |
1319 | */ |
1320 | void lttv_process_traceset_synchronize_tracefiles(LttvTracesetContext *tsc) |
1321 | { |
1322 | g_assert(lttv_process_traceset_seek_position(tsc, tsc->sync_position) == 0); |
1323 | } |
1324 | |
1325 | |
1326 | |
1327 | |
1328 | void lttv_process_traceset_get_sync_data(LttvTracesetContext *tsc) |
1329 | { |
1330 | lttv_traceset_context_position_save(tsc, tsc->sync_position); |
1331 | } |
1332 | |
1333 | struct seek_back_data { |
1334 | guint first_event; /* Index of the first event in the array : we will always |
1335 | overwrite at this position : this is a circular array. |
1336 | */ |
1337 | guint events_found; |
1338 | guint n; /* number of events requested */ |
1339 | GPtrArray *array; /* array of LttvTracesetContextPositions pointers */ |
1340 | LttvFilter *filter; |
1341 | check_handler *check; |
1342 | gboolean *stop_flag; |
1343 | guint raw_event_count; |
1344 | }; |
1345 | |
1346 | static gint seek_back_event_hook(void *hook_data, void* call_data) |
1347 | { |
1348 | struct seek_back_data *sd = (struct seek_back_data*)hook_data; |
1349 | LttvTracefileContext *tfc = (LttvTracefileContext*)call_data; |
1350 | LttvTracesetContext *tsc = tfc->t_context->ts_context; |
1351 | LttvTracesetContextPosition *pos; |
1352 | |
1353 | if(sd->check && sd->check(sd->raw_event_count, sd->stop_flag)) return TRUE; |
1354 | sd->raw_event_count++; |
1355 | |
1356 | if(sd->filter != NULL && sd->filter->head != NULL) { |
1357 | if(!lttv_filter_tree_parse(sd->filter->head, |
1358 | ltt_tracefile_get_event(tfc->tf), |
1359 | tfc->tf, |
1360 | tfc->t_context->t, |
1361 | tfc)) |
1362 | return FALSE; |
1363 | } |
1364 | |
1365 | pos = (LttvTracesetContextPosition*)g_ptr_array_index (sd->array, |
1366 | sd->first_event); |
1367 | |
1368 | lttv_traceset_context_position_save(tsc, pos); |
1369 | |
1370 | if(sd->first_event >= sd->array->len - 1) sd->first_event = 0; |
1371 | else sd->first_event++; |
1372 | |
1373 | sd->events_found = min(sd->n, sd->events_found + 1); |
1374 | |
1375 | return FALSE; |
1376 | } |
1377 | |
1378 | /* Seek back n events back from the current position. |
1379 | * |
1380 | * Parameters : |
1381 | * @self The trace set context |
1382 | * @n number of events to jump over |
1383 | * @first_offset The initial offset value used. |
1384 | * never put first_offset at ltt_time_zero. |
1385 | * @time_seeker Function pointer of the function to use to seek time : |
1386 | * either lttv_process_traceset_seek_time |
1387 | * or lttv_state_traceset_seek_time_closest |
1388 | * @filter The filter to call. |
1389 | * |
1390 | * Return value : the number of events found (might be lower than the number |
1391 | * requested if beginning of traceset is reached). |
1392 | * |
1393 | * The first search will go back first_offset and try to find the last n events |
1394 | * matching the filter. If there are not enough, it will try to go back from the |
1395 | * new trace point from first_offset*2, and so on, until beginning of trace or n |
1396 | * events are found. |
1397 | * |
1398 | * Note : this function does not take in account the LttvFilter : use the |
1399 | * similar function found in state.c instead. |
1400 | * |
1401 | * Note2 : the caller must make sure that the LttvTracesetContext does not |
1402 | * contain any hook, as process_traceset_middle is used in this routine. |
1403 | */ |
1404 | guint lttv_process_traceset_seek_n_backward(LttvTracesetContext *self, |
1405 | guint n, LttTime first_offset, |
1406 | seek_time_fct time_seeker, |
1407 | LttvFilter *filter, |
1408 | check_handler *check, |
1409 | gboolean *stop_flag) |
1410 | { |
1411 | if(lttv_traceset_number(self->ts) == 0) return 0; |
1412 | g_assert(ltt_time_compare(first_offset, ltt_time_zero) != 0); |
1413 | |
1414 | guint i; |
1415 | LttvTracesetContextPosition *next_iter_end_pos = |
1416 | lttv_traceset_context_position_new(self); |
1417 | LttvTracesetContextPosition *end_pos = |
1418 | lttv_traceset_context_position_new(self); |
1419 | LttvTracesetContextPosition *saved_pos = |
1420 | lttv_traceset_context_position_new(self); |
1421 | LttTime time; |
1422 | LttTime asked_time; |
1423 | LttTime time_offset; |
1424 | struct seek_back_data sd; |
1425 | LttvHooks *hooks = lttv_hooks_new(); |
1426 | |
1427 | sd.first_event = 0; |
1428 | sd.events_found = 0; |
1429 | sd.array = g_ptr_array_sized_new(n); |
1430 | sd.filter = filter; |
1431 | sd.n = n; |
1432 | sd.check = check; |
1433 | sd.stop_flag = stop_flag; |
1434 | sd.raw_event_count = 0; |
1435 | g_ptr_array_set_size(sd.array, n); |
1436 | for(i=0;i<n;i++) { |
1437 | g_ptr_array_index (sd.array, i) = lttv_traceset_context_position_new(self); |
1438 | } |
1439 | |
1440 | lttv_traceset_context_position_save(self, next_iter_end_pos); |
1441 | lttv_traceset_context_position_save(self, saved_pos); |
1442 | /* Get the current time from which we will offset */ |
1443 | time = lttv_traceset_context_position_get_time(next_iter_end_pos); |
1444 | /* the position saved might be end of traceset... */ |
1445 | if(ltt_time_compare(time, self->time_span.end_time) > 0) { |
1446 | time = self->time_span.end_time; |
1447 | } |
1448 | asked_time = time; |
1449 | time_offset = first_offset; |
1450 | |
1451 | lttv_hooks_add(hooks, seek_back_event_hook, &sd, LTTV_PRIO_DEFAULT); |
1452 | |
1453 | lttv_process_traceset_begin(self, NULL, NULL, NULL, hooks, NULL); |
1454 | |
1455 | while(1) { |
1456 | /* stop criteria : - n events found |
1457 | * - asked_time < beginning of trace */ |
1458 | if(ltt_time_compare(asked_time, self->time_span.start_time) < 0) break; |
1459 | |
1460 | lttv_traceset_context_position_copy(end_pos, next_iter_end_pos); |
1461 | |
1462 | /* We must seek the traceset back to time - time_offset */ |
1463 | /* this time becomes the new reference time */ |
1464 | time = ltt_time_sub(time, time_offset); |
1465 | asked_time = time; |
1466 | |
1467 | time_seeker(self, time); |
1468 | lttv_traceset_context_position_save(self, next_iter_end_pos); |
1469 | /* Resync the time in case of a seek_closest */ |
1470 | time = lttv_traceset_context_position_get_time(next_iter_end_pos); |
1471 | if(ltt_time_compare(time, self->time_span.end_time) > 0) { |
1472 | time = self->time_span.end_time; |
1473 | } |
1474 | |
1475 | /* Process the traceset, calling a hook which adds events |
1476 | * to the array, overwriting the tail. It changes first_event and |
1477 | * events_found too. */ |
1478 | /* We would like to have a clean context here : no other hook than our's */ |
1479 | |
1480 | lttv_process_traceset_middle(self, ltt_time_infinite, |
1481 | G_MAXUINT, end_pos); |
1482 | |
1483 | if(sd.events_found < n) { |
1484 | if(sd.first_event > 0) { |
1485 | /* Save the first position */ |
1486 | LttvTracesetContextPosition *pos = |
1487 | (LttvTracesetContextPosition*)g_ptr_array_index (sd.array, 0); |
1488 | lttv_traceset_context_position_copy(saved_pos, pos); |
1489 | } |
1490 | g_assert(n-sd.events_found <= sd.array->len); |
1491 | /* Change array size to n - events_found */ |
1492 | for(i=n-sd.events_found;i<sd.array->len;i++) { |
1493 | LttvTracesetContextPosition *pos = |
1494 | (LttvTracesetContextPosition*)g_ptr_array_index (sd.array, i); |
1495 | lttv_traceset_context_position_destroy(pos); |
1496 | } |
1497 | g_ptr_array_set_size(sd.array, n-sd.events_found); |
1498 | sd.first_event = 0; |
1499 | |
1500 | } else break; /* Second end criterion : n events found */ |
1501 | |
1502 | time_offset = ltt_time_mul(time_offset, BACKWARD_SEEK_MUL); |
1503 | } |
1504 | |
1505 | lttv_traceset_context_position_destroy(end_pos); |
1506 | lttv_traceset_context_position_destroy(next_iter_end_pos); |
1507 | |
1508 | lttv_process_traceset_end(self, NULL, NULL, NULL, hooks, NULL); |
1509 | |
1510 | if(sd.events_found >= n) { |
1511 | /* Seek the traceset to the first event in the circular array */ |
1512 | LttvTracesetContextPosition *pos = |
1513 | (LttvTracesetContextPosition*)g_ptr_array_index (sd.array, |
1514 | sd.first_event); |
1515 | g_assert(lttv_process_traceset_seek_position(self, pos) == 0); |
1516 | } else { |
1517 | /* Will seek to the last saved position : in the worst case, it will be the |
1518 | * original position (if events_found is 0) */ |
1519 | g_assert(lttv_process_traceset_seek_position(self, saved_pos) == 0); |
1520 | } |
1521 | |
1522 | for(i=0;i<sd.array->len;i++) { |
1523 | LttvTracesetContextPosition *pos = |
1524 | (LttvTracesetContextPosition*)g_ptr_array_index (sd.array, i); |
1525 | lttv_traceset_context_position_destroy(pos); |
1526 | } |
1527 | g_ptr_array_free(sd.array, TRUE); |
1528 | |
1529 | lttv_hooks_destroy(hooks); |
1530 | |
1531 | lttv_traceset_context_position_destroy(saved_pos); |
1532 | |
1533 | return sd.events_found; |
1534 | } |
1535 | |
1536 | |
1537 | struct seek_forward_data { |
1538 | guint event_count; /* event counter */ |
1539 | guint n; /* requested number of events to jump over */ |
1540 | LttvFilter *filter; |
1541 | check_handler *check; |
1542 | gboolean *stop_flag; |
1543 | guint raw_event_count; /* event counter */ |
1544 | }; |
1545 | |
1546 | static gint seek_forward_event_hook(void *hook_data, void* call_data) |
1547 | { |
1548 | struct seek_forward_data *sd = (struct seek_forward_data*)hook_data; |
1549 | LttvTracefileContext *tfc = (LttvTracefileContext*)call_data; |
1550 | |
1551 | if(sd->check && sd->check(sd->raw_event_count, sd->stop_flag)) return TRUE; |
1552 | sd->raw_event_count++; |
1553 | |
1554 | if(sd->filter == NULL || lttv_filter_tree_parse(sd->filter->head, |
1555 | ltt_tracefile_get_event(tfc->tf), |
1556 | tfc->tf, |
1557 | tfc->t_context->t, |
1558 | tfc)) { |
1559 | sd->event_count++; |
1560 | if(sd->event_count >= sd->n) |
1561 | return TRUE; |
1562 | } |
1563 | return FALSE; |
1564 | } |
1565 | |
1566 | /* Seek back n events forward from the current position (1 to n) |
1567 | * 0 is ok too, but it will actually do nothing. |
1568 | * |
1569 | * Parameters : |
1570 | * @self the trace set context |
1571 | * @n number of events to jump over |
1572 | * @filter filter to call. |
1573 | * |
1574 | * returns : the number of events jumped over (may be less than requested if end |
1575 | * of traceset reached) */ |
1576 | guint lttv_process_traceset_seek_n_forward(LttvTracesetContext *self, |
1577 | guint n, LttvFilter *filter, |
1578 | check_handler *check, |
1579 | gboolean *stop_flag) |
1580 | { |
1581 | struct seek_forward_data sd; |
1582 | sd.event_count = 0; |
1583 | sd.n = n; |
1584 | sd.filter = filter; |
1585 | sd.check = check; |
1586 | sd.stop_flag = stop_flag; |
1587 | sd.raw_event_count = 0; |
1588 | |
1589 | if(sd.event_count >= sd.n) return sd.event_count; |
1590 | |
1591 | LttvHooks *hooks = lttv_hooks_new(); |
1592 | |
1593 | lttv_hooks_add(hooks, seek_forward_event_hook, &sd, LTTV_PRIO_DEFAULT); |
1594 | |
1595 | lttv_process_traceset_begin(self, NULL, NULL, NULL, hooks, NULL); |
1596 | |
1597 | /* it will end on the end of traceset, or the fact that the |
1598 | * hook returns TRUE. |
1599 | */ |
1600 | lttv_process_traceset_middle(self, ltt_time_infinite, |
1601 | G_MAXUINT, NULL); |
1602 | |
1603 | /* Here, our position is either the end of traceset, or the exact position |
1604 | * after n events : leave it like this. This might be placed on an event that |
1605 | * will be filtered out, we don't care : all we know is that the following |
1606 | * event filtered in will be the right one. */ |
1607 | |
1608 | lttv_process_traceset_end(self, NULL, NULL, NULL, hooks, NULL); |
1609 | |
1610 | lttv_hooks_destroy(hooks); |
1611 | |
1612 | return sd.event_count; |
1613 | } |
1614 | |
1615 | |