1 /* This file is part of the Linux Trace Toolkit viewer
2 * Copyright (C) 2003-2004 Michel Dagenais
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;
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.
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,
24 #include <lttv/lttv.h>
25 #include <lttv/tracecontext.h>
26 #include <ltt/event.h>
27 #include <ltt/trace.h>
28 #include <lttv/filter.h>
31 #define min(a,b) (((a)<(b))?(a):(b))
34 gint
compare_tracefile(gconstpointer a
, gconstpointer b
)
38 const LttvTracefileContext
*trace_a
= (const LttvTracefileContext
*)a
;
39 const LttvTracefileContext
*trace_b
= (const LttvTracefileContext
*)b
;
41 if(likely(trace_a
!= trace_b
)) {
42 comparison
= ltt_time_compare(trace_a
->timestamp
, trace_b
->timestamp
);
43 if(unlikely(comparison
== 0)) {
44 if(trace_a
->index
< trace_b
->index
) comparison
= -1;
45 else if(trace_a
->index
> trace_b
->index
) comparison
= 1;
46 else if(trace_a
->t_context
->index
< trace_b
->t_context
->index
)
48 else if(trace_a
->t_context
->index
> trace_b
->t_context
->index
)
55 typedef struct _LttvTracefileContextPosition
{
56 LttEventPosition
*event
;
57 LttvTracefileContext
*tfc
;
58 gboolean used
; /* Tells if the tfc is at end of traceset position */
59 } LttvTracefileContextPosition
;
62 struct _LttvTracesetContextPosition
{
63 GArray
*tfcp
; /* Array of LttvTracefileContextPosition */
64 LttTime timestamp
; /* Current time at the saved position */
65 /* If ltt_time_infinite : no position is
66 * set, else, a position is set (may be end
67 * of trace, with ep->len == 0) */
70 void lttv_context_init(LttvTracesetContext
*self
, LttvTraceset
*ts
)
72 LTTV_TRACESET_CONTEXT_GET_CLASS(self
)->init(self
, ts
);
76 void lttv_context_fini(LttvTracesetContext
*self
)
78 LTTV_TRACESET_CONTEXT_GET_CLASS(self
)->fini(self
);
83 lttv_context_new_traceset_context(LttvTracesetContext
*self
)
85 return LTTV_TRACESET_CONTEXT_GET_CLASS(self
)->new_traceset_context(self
);
92 lttv_context_new_trace_context(LttvTracesetContext
*self
)
94 return LTTV_TRACESET_CONTEXT_GET_CLASS(self
)->new_trace_context(self
);
98 LttvTracefileContext
*
99 lttv_context_new_tracefile_context(LttvTracesetContext
*self
)
101 return LTTV_TRACESET_CONTEXT_GET_CLASS(self
)->new_tracefile_context(self
);
104 /****************************************************************************
105 * lttv_traceset_context_compute_time_span
107 * Keep the time span is sync with on the fly addition and removal of traces
108 * in a trace set. It must be called each time a trace is added/removed from
109 * the traceset. It could be more efficient to call it only once a bunch
110 * of traces are loaded, but the calculation is not long, so it's not
113 * Author : Xang Xiu Yang
114 ***************************************************************************/
115 static void lttv_traceset_context_compute_time_span(
116 LttvTracesetContext
*self
,
117 TimeInterval
*time_span
)
119 LttvTraceset
* traceset
= self
->ts
;
120 int numTraces
= lttv_traceset_number(traceset
);
123 LttvTraceContext
*tc
;
126 time_span
->start_time
.tv_sec
= 0;
127 time_span
->start_time
.tv_nsec
= 0;
128 time_span
->end_time
.tv_sec
= 0;
129 time_span
->end_time
.tv_nsec
= 0;
131 for(i
=0; i
<numTraces
;i
++){
132 tc
= self
->traces
[i
];
135 ltt_trace_time_span_get(trace
, &s
, &e
);
136 tc
->time_span
.start_time
= s
;
137 tc
->time_span
.end_time
= e
;
140 time_span
->start_time
= s
;
141 time_span
->end_time
= e
;
143 if(s
.tv_sec
< time_span
->start_time
.tv_sec
144 || (s
.tv_sec
== time_span
->start_time
.tv_sec
145 && s
.tv_nsec
< time_span
->start_time
.tv_nsec
))
146 time_span
->start_time
= s
;
147 if(e
.tv_sec
> time_span
->end_time
.tv_sec
148 || (e
.tv_sec
== time_span
->end_time
.tv_sec
149 && e
.tv_nsec
> time_span
->end_time
.tv_nsec
))
150 time_span
->end_time
= e
;
155 static void init_tracefile_context(LttTracefile
*tracefile
,
156 LttvTraceContext
*tc
)
158 LttvTracefileContext
*tfc
;
159 LttvTracesetContext
*tsc
= tc
->ts_context
;
161 tfc
= LTTV_TRACESET_CONTEXT_GET_CLASS(tsc
)->new_tracefile_context(tsc
);
163 tfc
->index
= tc
->tracefiles
->len
;
164 tc
->tracefiles
= g_array_append_val(tc
->tracefiles
, tfc
);
169 tfc
->event
= lttv_hooks_new();
170 tfc
->event_by_id
= lttv_hooks_by_id_new();
171 tfc
->a
= g_object_new(LTTV_ATTRIBUTE_TYPE
, NULL
);
172 tfc
->target_pid
= -1;
177 init(LttvTracesetContext
*self
, LttvTraceset
*ts
)
181 LttvTraceContext
*tc
;
183 GData
**tracefiles_groups
;
185 struct compute_tracefile_group_args args
;
187 nb_trace
= lttv_traceset_number(ts
);
189 self
->traces
= g_new(LttvTraceContext
*, nb_trace
);
190 self
->a
= g_object_new(LTTV_ATTRIBUTE_TYPE
, NULL
);
191 self
->ts_a
= lttv_traceset_attribute(ts
);
192 for(i
= 0 ; i
< nb_trace
; i
++) {
193 tc
= LTTV_TRACESET_CONTEXT_GET_CLASS(self
)->new_trace_context(self
);
194 self
->traces
[i
] = tc
;
196 tc
->ts_context
= self
;
198 tc
->vt
= lttv_traceset_get(ts
, i
);
199 tc
->t
= lttv_trace(tc
->vt
);
200 tc
->a
= g_object_new(LTTV_ATTRIBUTE_TYPE
, NULL
);
201 tc
->t_a
= lttv_trace_attribute(tc
->vt
);
202 tc
->tracefiles
= g_array_sized_new(FALSE
, TRUE
,
203 sizeof(LttvTracefileContext
*), 10);
205 tracefiles_groups
= ltt_trace_get_tracefiles_groups(tc
->t
);
206 if(tracefiles_groups
!= NULL
) {
207 args
.func
= (ForEachTraceFileFunc
)init_tracefile_context
;
210 g_datalist_foreach(tracefiles_groups
,
211 (GDataForeachFunc
)compute_tracefile_group
,
216 nb_control
= ltt_trace_control_tracefile_number(tc
->t
);
217 nb_per_cpu
= ltt_trace_per_cpu_tracefile_number(tc
->t
);
218 nb_tracefile
= nb_control
+ nb_per_cpu
;
219 tc
->tracefiles
= g_new(LttvTracefileContext
*, nb_tracefile
);
221 for(j
= 0 ; j
< nb_tracefile
; j
++) {
222 tfc
= LTTV_TRACESET_CONTEXT_GET_CLASS(self
)->new_tracefile_context(self
);
223 tc
->tracefiles
[j
] = tfc
;
228 tfc
->tf
= ltt_trace_control_tracefile_get(tc
->t
, j
);
231 tfc
->control
= FALSE
;
232 tfc
->tf
= ltt_trace_per_cpu_tracefile_get(tc
->t
, j
- nb_control
);
236 tfc
->e
= ltt_event_new();
237 tfc
->event
= lttv_hooks_new();
238 tfc
->event_by_id
= lttv_hooks_by_id_new();
239 tfc
->a
= g_object_new(LTTV_ATTRIBUTE_TYPE
, NULL
);
244 self
->sync_position
= lttv_traceset_context_position_new(self
);
245 self
->pqueue
= g_tree_new(compare_tracefile
);
246 lttv_process_traceset_seek_time(self
, ltt_time_zero
);
247 lttv_traceset_context_compute_time_span(self
, &self
->time_span
);
252 void fini(LttvTracesetContext
*self
)
254 guint i
, j
, nb_trace
, nb_tracefile
;
256 LttvTraceContext
*tc
;
258 LttvTracefileContext
**tfc
;
260 LttvTraceset
*ts
= self
->ts
;
262 g_tree_destroy(self
->pqueue
);
263 g_object_unref(self
->a
);
264 lttv_traceset_context_position_destroy(self
->sync_position
);
266 nb_trace
= lttv_traceset_number(ts
);
268 for(i
= 0 ; i
< nb_trace
; i
++) {
269 tc
= self
->traces
[i
];
271 g_object_unref(tc
->a
);
273 nb_tracefile
= tc
->tracefiles
->len
;
275 for(j
= 0 ; j
< nb_tracefile
; j
++) {
276 tfc
= &g_array_index(tc
->tracefiles
, LttvTracefileContext
*, j
);
277 lttv_hooks_destroy((*tfc
)->event
);
278 lttv_hooks_by_id_destroy((*tfc
)->event_by_id
);
279 g_object_unref((*tfc
)->a
);
280 g_object_unref(*tfc
);
282 g_array_free(tc
->tracefiles
, TRUE
);
285 g_free(self
->traces
);
289 void lttv_traceset_context_add_hooks(LttvTracesetContext
*self
,
290 LttvHooks
*before_traceset
,
291 LttvHooks
*before_trace
,
292 LttvHooks
*before_tracefile
,
294 LttvHooksById
*event_by_id
)
296 LttvTraceset
*ts
= self
->ts
;
300 LttvTraceContext
*tc
;
302 lttv_hooks_call(before_traceset
, self
);
304 nb_trace
= lttv_traceset_number(ts
);
306 for(i
= 0 ; i
< nb_trace
; i
++) {
307 tc
= self
->traces
[i
];
308 lttv_trace_context_add_hooks(tc
,
317 void lttv_traceset_context_remove_hooks(LttvTracesetContext
*self
,
318 LttvHooks
*after_traceset
,
319 LttvHooks
*after_trace
,
320 LttvHooks
*after_tracefile
,
322 LttvHooksById
*event_by_id
)
325 LttvTraceset
*ts
= self
->ts
;
329 LttvTraceContext
*tc
;
331 nb_trace
= lttv_traceset_number(ts
);
333 for(i
= 0 ; i
< nb_trace
; i
++) {
334 tc
= self
->traces
[i
];
335 lttv_trace_context_remove_hooks(tc
,
342 lttv_hooks_call(after_traceset
, self
);
347 void lttv_trace_context_add_hooks(LttvTraceContext
*self
,
348 LttvHooks
*before_trace
,
349 LttvHooks
*before_tracefile
,
351 LttvHooksById
*event_by_id
)
353 guint i
, nb_tracefile
;
355 LttvTracefileContext
**tfc
;
357 lttv_hooks_call(before_trace
, self
);
359 nb_tracefile
= self
->tracefiles
->len
;
361 for(i
= 0 ; i
< nb_tracefile
; i
++) {
362 tfc
= &g_array_index(self
->tracefiles
, LttvTracefileContext
*, i
);
363 lttv_tracefile_context_add_hooks(*tfc
,
372 void lttv_trace_context_remove_hooks(LttvTraceContext
*self
,
373 LttvHooks
*after_trace
,
374 LttvHooks
*after_tracefile
,
376 LttvHooksById
*event_by_id
)
378 guint i
, nb_tracefile
;
380 LttvTracefileContext
**tfc
;
382 nb_tracefile
= self
->tracefiles
->len
;
384 for(i
= 0 ; i
< nb_tracefile
; i
++) {
385 tfc
= &g_array_index(self
->tracefiles
, LttvTracefileContext
*, i
);
386 lttv_tracefile_context_remove_hooks(*tfc
,
392 lttv_hooks_call(after_trace
, self
);
395 void lttv_tracefile_context_add_hooks(LttvTracefileContext
*self
,
396 LttvHooks
*before_tracefile
,
398 LttvHooksById
*event_by_id
)
404 lttv_hooks_call(before_tracefile
, self
);
405 lttv_hooks_add_list(self
->event
, event
);
406 if(event_by_id
!= NULL
) {
407 for(i
= 0; i
< event_by_id
->array
->len
; i
++) {
408 index
= g_array_index(event_by_id
->array
, guint
, i
);
409 hook
= lttv_hooks_by_id_find(self
->event_by_id
, index
);
410 lttv_hooks_add_list(hook
, lttv_hooks_by_id_get(event_by_id
, index
));
415 void lttv_tracefile_context_remove_hooks(LttvTracefileContext
*self
,
416 LttvHooks
*after_tracefile
,
418 LttvHooksById
*event_by_id
)
424 lttv_hooks_remove_list(self
->event
, event
);
425 if(event_by_id
!= NULL
) {
426 for(i
= 0; i
< event_by_id
->array
->len
; i
++) {
427 index
= g_array_index(event_by_id
->array
, guint
, i
);
428 hook
= lttv_hooks_by_id_get(self
->event_by_id
, index
);
430 lttv_hooks_remove_list(hook
, lttv_hooks_by_id_get(event_by_id
, index
));
434 lttv_hooks_call(after_tracefile
, self
);
439 void lttv_tracefile_context_add_hooks_by_id(LttvTracefileContext
*tfc
,
441 LttvHooks
*event_by_id
)
444 h
= lttv_hooks_by_id_find(tfc
->event_by_id
, i
);
445 lttv_hooks_add_list(h
, event_by_id
);
448 void lttv_tracefile_context_remove_hooks_by_id(LttvTracefileContext
*tfc
,
451 lttv_hooks_by_id_remove(tfc
->event_by_id
, i
);
454 static LttvTracesetContext
*
455 new_traceset_context(LttvTracesetContext
*self
)
457 return g_object_new(LTTV_TRACESET_CONTEXT_TYPE
, NULL
);
461 static LttvTraceContext
*
462 new_trace_context(LttvTracesetContext
*self
)
464 return g_object_new(LTTV_TRACE_CONTEXT_TYPE
, NULL
);
468 static LttvTracefileContext
*
469 new_tracefile_context(LttvTracesetContext
*self
)
471 return g_object_new(LTTV_TRACEFILE_CONTEXT_TYPE
, NULL
);
476 traceset_context_instance_init (GTypeInstance
*instance
, gpointer g_class
)
478 /* Be careful of anything which would not work well with shallow copies */
483 traceset_context_finalize (LttvTracesetContext
*self
)
485 G_OBJECT_CLASS(g_type_class_peek(g_type_parent(LTTV_TRACESET_CONTEXT_TYPE
)))
486 ->finalize(G_OBJECT(self
));
491 traceset_context_class_init (LttvTracesetContextClass
*klass
)
493 GObjectClass
*gobject_class
= G_OBJECT_CLASS(klass
);
495 gobject_class
->finalize
= (void (*)(GObject
*self
))traceset_context_finalize
;
498 klass
->new_traceset_context
= new_traceset_context
;
499 klass
->new_trace_context
= new_trace_context
;
500 klass
->new_tracefile_context
= new_tracefile_context
;
505 lttv_traceset_context_get_type(void)
507 static GType type
= 0;
509 static const GTypeInfo info
= {
510 sizeof (LttvTracesetContextClass
),
511 NULL
, /* base_init */
512 NULL
, /* base_finalize */
513 (GClassInitFunc
) traceset_context_class_init
, /* class_init */
514 NULL
, /* class_finalize */
515 NULL
, /* class_data */
516 sizeof (LttvTracesetContext
),
518 (GInstanceInitFunc
) traceset_context_instance_init
, /* instance_init */
519 NULL
/* Value handling */
522 type
= g_type_register_static (G_TYPE_OBJECT
, "LttvTracesetContextType",
530 trace_context_instance_init (GTypeInstance
*instance
, gpointer g_class
)
532 /* Be careful of anything which would not work well with shallow copies */
537 trace_context_finalize (LttvTraceContext
*self
)
539 G_OBJECT_CLASS(g_type_class_peek(g_type_parent(LTTV_TRACE_CONTEXT_TYPE
)))->
540 finalize(G_OBJECT(self
));
545 trace_context_class_init (LttvTraceContextClass
*klass
)
547 GObjectClass
*gobject_class
= G_OBJECT_CLASS(klass
);
549 gobject_class
->finalize
= (void (*)(GObject
*self
)) trace_context_finalize
;
554 lttv_trace_context_get_type(void)
556 static GType type
= 0;
558 static const GTypeInfo info
= {
559 sizeof (LttvTraceContextClass
),
560 NULL
, /* base_init */
561 NULL
, /* base_finalize */
562 (GClassInitFunc
) trace_context_class_init
, /* class_init */
563 NULL
, /* class_finalize */
564 NULL
, /* class_data */
565 sizeof (LttvTraceContext
),
567 (GInstanceInitFunc
) trace_context_instance_init
, /* instance_init */
568 NULL
/* Value handling */
571 type
= g_type_register_static (G_TYPE_OBJECT
, "LttvTraceContextType",
579 tracefile_context_instance_init (GTypeInstance
*instance
, gpointer g_class
)
581 /* Be careful of anything which would not work well with shallow copies */
586 tracefile_context_finalize (LttvTracefileContext
*self
)
588 G_OBJECT_CLASS(g_type_class_peek(g_type_parent(LTTV_TRACEFILE_CONTEXT_TYPE
)))
589 ->finalize(G_OBJECT(self
));
594 tracefile_context_class_init (LttvTracefileContextClass
*klass
)
596 GObjectClass
*gobject_class
= G_OBJECT_CLASS(klass
);
598 gobject_class
->finalize
= (void (*)(GObject
*self
))tracefile_context_finalize
;
603 lttv_tracefile_context_get_type(void)
605 static GType type
= 0;
607 static const GTypeInfo info
= {
608 sizeof (LttvTracefileContextClass
),
609 NULL
, /* base_init */
610 NULL
, /* base_finalize */
611 (GClassInitFunc
) tracefile_context_class_init
, /* class_init */
612 NULL
, /* class_finalize */
613 NULL
, /* class_data */
614 sizeof (LttvTracefileContext
),
616 (GInstanceInitFunc
) tracefile_context_instance_init
, /* instance_init */
617 NULL
/* Value handling */
620 type
= g_type_register_static (G_TYPE_OBJECT
, "LttvTracefileContextType",
628 static gboolean
get_first(gpointer key
, gpointer value
, gpointer user_data
) {
629 g_assert(key
== value
);
630 *((LttvTracefileContext
**)user_data
) = (LttvTracefileContext
*)value
;
635 // Test to see if pqueue is traversed in the right order.
636 static LttTime test_time
;
638 static gboolean
test_tree(gpointer key
, gpointer value
, gpointer user_data
) {
640 LttvTracefileContext
*tfc
= (LttvTracefileContext
*)key
;
642 g_debug("Tracefile name %s, time %lu.%lu, tfi %u, ti %u",
643 g_quark_to_string(ltt_tracefile_name(tfc
->tf
)),
644 tfc
->timestamp
.tv_sec
, tfc
->timestamp
.tv_nsec
,
645 tfc
->index
, tfc
->t_context
->index
);
647 if(user_data
!= NULL
) {
648 if(((LttvTracefileContext
*)user_data
) == (LttvTracefileContext
*)value
) {
649 g_assert(compare_tracefile(user_data
, value
) == 0);
651 g_assert(compare_tracefile(user_data
, value
) != 0);
653 g_assert(ltt_time_compare(test_time
, tfc
->timestamp
) <= 0);
654 test_time
.tv_sec
= tfc
->timestamp
.tv_sec
;
655 test_time
.tv_nsec
= tfc
->timestamp
.tv_nsec
;
658 //g_assert(((LttvTracefileContext *)user_data) != (LttvTracefileContext *)value);
665 void lttv_process_traceset_begin(LttvTracesetContext
*self
,
666 LttvHooks
*before_traceset
,
667 LttvHooks
*before_trace
,
668 LttvHooks
*before_tracefile
,
670 LttvHooksById
*event_by_id
)
673 /* simply add hooks in context. _before hooks are called by add_hooks. */
674 /* It calls all before_traceset, before_trace, and before_tracefile hooks. */
675 lttv_traceset_context_add_hooks(self
,
684 //enum read_state { LAST_NONE, LAST_OK, LAST_EMPTY };
686 /* Note : a _middle must be preceded from a _seek or another middle */
687 guint
lttv_process_traceset_middle(LttvTracesetContext
*self
,
690 const LttvTracesetContextPosition
*end_position
)
692 GTree
*pqueue
= self
->pqueue
;
694 guint fac_id
, ev_id
, id
;
696 LttvTracefileContext
*tfc
;
704 //enum read_state last_read_state = LAST_NONE;
706 gint last_ret
= 0; /* return value of the last hook list called */
708 /* Get the next event from the pqueue, call its hooks,
709 reinsert in the pqueue the following event from the same tracefile
710 unless the tracefile is finished or the event is later than the
715 g_tree_foreach(pqueue
, get_first
, &tfc
);
716 /* End of traceset : tfc is NULL */
717 if(unlikely(tfc
== NULL
))
723 * - the maximum number of events specified?
724 * - the end position ?
726 * then the read is finished. We leave the queue in the same state and
730 if(unlikely(last_ret
== TRUE
||
731 ((count
>= nb_events
) && (nb_events
!= G_MAXULONG
)) ||
732 (end_position
!=NULL
&<tv_traceset_context_ctx_pos_compare(self
,
733 end_position
) == 0)||
734 ltt_time_compare(end
, tfc
->timestamp
) <= 0))
739 /* Get the tracefile with an event for the smallest time found. If two
740 or more tracefiles have events for the same time, hope that lookup
741 and remove are consistent. */
744 test_time
.tv_sec
= 0;
745 test_time
.tv_nsec
= 0;
746 g_debug("test tree before remove");
747 g_tree_foreach(pqueue
, test_tree
, tfc
);
749 g_tree_remove(pqueue
, tfc
);
752 test_time
.tv_sec
= 0;
753 test_time
.tv_nsec
= 0;
754 g_debug("test tree after remove");
755 g_tree_foreach(pqueue
, test_tree
, tfc
);
759 e
= ltt_tracefile_get_event(tfc
->tf
);
761 //if(last_read_state != LAST_EMPTY) {
762 /* Only call hooks if the last read has given an event or if we are at the
763 * first pass (not if last read returned end of tracefile) */
766 fac_id
= ltt_event_facility_id(e
);
767 ev_id
= ltt_event_eventtype_id(e
);
768 id
= GET_HOOK_ID(fac_id
, ev_id
);
769 tfc
->target_pid
= -1; /* unset target PID */
771 * return values : 0 : continue read, 1 : go to next position and stop read,
772 * 2 : stay at the current position and stop read */
773 last_ret
= lttv_hooks_call_merge(tfc
->event
, tfc
,
774 lttv_hooks_by_id_get(tfc
->event_by_id
, id
), tfc
);
777 /* This is buggy : it won't work well with state computation */
778 if(unlikely(last_ret
== 2)) {
779 /* This is a case where we want to stay at this position and stop read. */
780 g_tree_insert(pqueue
, tfc
, tfc
);
784 read_ret
= ltt_tracefile_read(tfc
->tf
);
787 if(likely(!read_ret
)) {
788 //g_debug("An event is ready");
789 tfc
->timestamp
= ltt_event_time(e
);
790 g_assert(ltt_time_compare(tfc
->timestamp
, ltt_time_infinite
) != 0);
791 g_tree_insert(pqueue
, tfc
, tfc
);
793 test_time
.tv_sec
= 0;
794 test_time
.tv_nsec
= 0;
795 g_debug("test tree after event ready");
796 g_tree_foreach(pqueue
, test_tree
, NULL
);
799 //last_read_state = LAST_OK;
801 tfc
->timestamp
= ltt_time_infinite
;
803 if(read_ret
== ERANGE
) {
804 // last_read_state = LAST_EMPTY;
805 g_debug("End of trace");
807 g_error("Error happened in lttv_process_traceset_middle");
813 void lttv_process_traceset_end(LttvTracesetContext
*self
,
814 LttvHooks
*after_traceset
,
815 LttvHooks
*after_trace
,
816 LttvHooks
*after_tracefile
,
818 LttvHooksById
*event_by_id
)
820 /* Remove hooks from context. _after hooks are called by remove_hooks. */
821 /* It calls all after_traceset, after_trace, and after_tracefile hooks. */
822 lttv_traceset_context_remove_hooks(self
,
830 /* Subtile modification :
831 * if tracefile has no event at or after the time requested, it is not put in
832 * the queue, as the next read would fail.
834 * Don't forget to empty the traceset pqueue before calling this.
836 void lttv_process_trace_seek_time(LttvTraceContext
*self
, LttTime start
)
838 guint i
, nb_tracefile
;
842 LttvTracefileContext
**tfc
;
844 nb_tracefile
= self
->tracefiles
->len
;
846 GTree
*pqueue
= self
->ts_context
->pqueue
;
848 for(i
= 0 ; i
< nb_tracefile
; i
++) {
849 tfc
= &g_array_index(self
->tracefiles
, LttvTracefileContext
*, i
);
851 g_tree_remove(pqueue
, *tfc
);
853 ret
= ltt_tracefile_seek_time((*tfc
)->tf
, start
);
854 if(ret
== EPERM
) g_error("error in lttv_process_trace_seek_time seek");
856 if(ret
== 0) { /* not ERANGE especially */
857 (*tfc
)->timestamp
= ltt_event_time(ltt_tracefile_get_event((*tfc
)->tf
));
858 g_assert(ltt_time_compare((*tfc
)->timestamp
, ltt_time_infinite
) != 0);
859 g_tree_insert(pqueue
, (*tfc
), (*tfc
));
861 (*tfc
)->timestamp
= ltt_time_infinite
;
865 test_time
.tv_sec
= 0;
866 test_time
.tv_nsec
= 0;
867 g_debug("test tree after seek_time");
868 g_tree_foreach(pqueue
, test_tree
, NULL
);
876 void lttv_process_traceset_seek_time(LttvTracesetContext
*self
, LttTime start
)
880 LttvTraceContext
*tc
;
882 //g_tree_destroy(self->pqueue);
883 //self->pqueue = g_tree_new(compare_tracefile);
885 nb_trace
= lttv_traceset_number(self
->ts
);
886 for(i
= 0 ; i
< nb_trace
; i
++) {
887 tc
= self
->traces
[i
];
888 lttv_process_trace_seek_time(tc
, start
);
893 gboolean
lttv_process_traceset_seek_position(LttvTracesetContext
*self
,
894 const LttvTracesetContextPosition
*pos
)
897 /* If a position is set, seek the traceset to this position */
898 if(ltt_time_compare(pos
->timestamp
, ltt_time_infinite
) != 0) {
900 /* Test to see if the traces has been added to the trace set :
901 * It should NEVER happen. Clear all positions if a new trace comes in. */
902 /* FIXME I know this test is not optimal : should keep a number of
903 * tracefiles variable in the traceset.. eventually */
904 guint num_traces
= lttv_traceset_number(self
->ts
);
906 for(i
=0; i
<num_traces
;i
++) {
907 GArray
* tracefiles
= self
->traces
[i
]->tracefiles
;
909 guint num_tracefiles
= tracefiles
->len
;
910 for(j
=0;j
<num_tracefiles
;j
++)
913 g_assert(tf_count
== pos
->tfcp
->len
);
916 //g_tree_destroy(self->pqueue);
917 //self->pqueue = g_tree_new(compare_tracefile);
919 for(i
=0;i
<pos
->tfcp
->len
; i
++) {
920 LttvTracefileContextPosition
*tfcp
=
921 &g_array_index(pos
->tfcp
, LttvTracefileContextPosition
, i
);
923 g_tree_remove(self
->pqueue
, tfcp
->tfc
);
925 if(tfcp
->used
== TRUE
) {
926 if(ltt_tracefile_seek_position(tfcp
->tfc
->tf
, tfcp
->event
) != 0)
928 tfcp
->tfc
->timestamp
=
929 ltt_event_time(ltt_tracefile_get_event(tfcp
->tfc
->tf
));
930 g_assert(ltt_time_compare(tfcp
->tfc
->timestamp
,
931 ltt_time_infinite
) != 0);
932 g_tree_insert(self
->pqueue
, tfcp
->tfc
, tfcp
->tfc
);
935 tfcp
->tfc
->timestamp
= ltt_time_infinite
;
940 test_time
.tv_sec
= 0;
941 test_time
.tv_nsec
= 0;
942 g_debug("test tree after seek_position");
943 g_tree_foreach(self
->pqueue
, test_tree
, NULL
);
954 find_field(LttEventType
*et
, const GQuark field
)
958 if(field
== 0) return NULL
;
960 f
= ltt_eventtype_field_by_name(et
, field
);
962 g_warning("Cannot find field %s in event %s.%s", g_quark_to_string(field
),
963 g_quark_to_string(ltt_facility_name(ltt_eventtype_facility(et
))),
964 g_quark_to_string(ltt_eventtype_name(et
)));
970 LttvTraceHookByFacility
*lttv_trace_hook_get_fac(LttvTraceHook
*th
,
973 return &g_array_index(th
->fac_index
, LttvTraceHookByFacility
, facility_id
);
976 struct marker_info
*lttv_trace_hook_get_marker(LttvTraceHook
*th
)
978 g_assert(th
->fac_list
->len
> 0);
979 return g_array_index(th
->fac_list
, LttvTraceHookByFacility
*, 0);
983 /* Returns 0 on success, -1 if fails. */
985 lttv_trace_find_hook(LttTrace
*t
, GQuark event
,
986 GQuark field1
, GQuark field2
, GQuark field3
, LttvHook h
, gpointer hook_data
,
989 LttEventType
*et
, *first_et
;
991 struct marker_info
*info
;
995 head
= marker_get_info_from_name(t
, event
);
997 if(unlikely(head
== NULL
))
1000 ev_id
= marker_get_id_from_info(t
, info
);
1004 th
->f1
= find_field(et
, field1
);
1005 th
->f2
= find_field(et
, field2
);
1006 th
->f3
= find_field(et
, field3
);
1007 th
->hook_data
= hook_data
;
1012 /* Check for type compatibility too */
1013 for(i
=1;i
<facilities
->len
;i
++) {
1014 fac_id
= g_array_index(facilities
, guint
, i
);
1015 f
= ltt_trace_get_facility_by_num(t
, fac_id
);
1017 et
= ltt_facility_eventtype_get_by_name(f
, event
);
1018 if(unlikely(et
== NULL
)) goto event_error
;
1020 thf
= &g_array_index(th
->fac_index
, LttvTraceHookByFacility
, fac_id
);
1021 g_array_index(th
->fac_list
, LttvTraceHookByFacility
*, i
) = thf
;
1022 ev_id
= ltt_eventtype_id(et
);
1024 thf
->id
= GET_HOOK_ID(fac_id
, ev_id
);
1025 thf
->f1
= find_field(et
, field1
);
1026 if(check_fields_compatibility(first_et
, et
,
1027 first_thf
->f1
, thf
->f1
))
1030 thf
->f2
= find_field(et
, field2
);
1031 if(check_fields_compatibility(first_et
, et
,
1032 first_thf
->f2
, thf
->f2
))
1035 thf
->f3
= find_field(et
, field3
);
1036 if(check_fields_compatibility(first_et
, et
,
1037 first_thf
->f3
, thf
->f3
))
1039 thf
->hook_data
= hook_data
;
1047 g_error("Event type does not exist for event %s",
1048 g_quark_to_string(event
));
1051 //Ignore this type of error : some facilities are not required.
1052 //g_error("No %s facility", g_quark_to_string(facility));
1055 g_array_free(th
->fac_index
, TRUE
);
1056 g_array_free(th
->fac_list
, TRUE
);
1057 th
->fac_index
= NULL
;
1058 th
->fac_list
= NULL
;
1062 void lttv_trace_hook_destroy(LttvTraceHook
*th
)
1064 g_array_free(th
->fac_index
, TRUE
);
1065 g_array_free(th
->fac_list
, TRUE
);
1071 LttvTracesetContextPosition
*lttv_traceset_context_position_new(
1072 const LttvTracesetContext
*self
)
1074 guint num_traces
= lttv_traceset_number(self
->ts
);
1078 for(i
=0; i
<num_traces
;i
++) {
1079 GArray
* tracefiles
= self
->traces
[i
]->tracefiles
;
1081 guint num_tracefiles
= tracefiles
->len
;
1082 for(j
=0;j
<num_tracefiles
;j
++)
1085 LttvTracesetContextPosition
*pos
=
1086 g_new(LttvTracesetContextPosition
, 1);
1087 pos
->tfcp
= g_array_sized_new(FALSE
, TRUE
,
1088 sizeof(LttvTracefileContextPosition
),
1090 g_array_set_size(pos
->tfcp
, tf_count
);
1091 for(i
=0;i
<pos
->tfcp
->len
;i
++) {
1092 LttvTracefileContextPosition
*tfcp
=
1093 &g_array_index(pos
->tfcp
, LttvTracefileContextPosition
, i
);
1094 tfcp
->event
= ltt_event_position_new();
1097 pos
->timestamp
= ltt_time_infinite
;
1101 /* Save all positions, the ones with infinite time will have NULL
1103 /* note : a position must be destroyed when a trace is added/removed from a
1105 void lttv_traceset_context_position_save(const LttvTracesetContext
*self
,
1106 LttvTracesetContextPosition
*pos
)
1109 guint num_traces
= lttv_traceset_number(self
->ts
);
1112 pos
->timestamp
= ltt_time_infinite
;
1114 for(i
=0; i
<num_traces
;i
++) {
1115 GArray
* tracefiles
= self
->traces
[i
]->tracefiles
;
1117 guint num_tracefiles
= tracefiles
->len
;
1119 for(j
=0;j
<num_tracefiles
;j
++) {
1120 g_assert(tf_count
< pos
->tfcp
->len
);
1121 LttvTracefileContext
**tfc
= &g_array_index(tracefiles
,
1122 LttvTracefileContext
*, j
);
1123 LttvTracefileContextPosition
*tfcp
=
1124 &g_array_index(pos
->tfcp
, LttvTracefileContextPosition
, tf_count
);
1128 if(ltt_time_compare((*tfc
)->timestamp
, ltt_time_infinite
) != 0) {
1129 LttEvent
*event
= ltt_tracefile_get_event((*tfc
)->tf
);
1130 ltt_event_position(event
, tfcp
->event
);
1131 if(ltt_time_compare((*tfc
)->timestamp
, pos
->timestamp
) < 0)
1132 pos
->timestamp
= (*tfc
)->timestamp
;
1138 //g_array_append_val(pos->tfc, *tfc);
1139 //g_array_append_val(pos->ep, ep);
1146 void lttv_traceset_context_position_destroy(LttvTracesetContextPosition
*pos
)
1150 for(i
=0;i
<pos
->tfcp
->len
;i
++) {
1151 LttvTracefileContextPosition
*tfcp
=
1152 &g_array_index(pos
->tfcp
, LttvTracefileContextPosition
, i
);
1153 g_free(tfcp
->event
);
1157 g_array_free(pos
->tfcp
, TRUE
);
1161 void lttv_traceset_context_position_copy(LttvTracesetContextPosition
*dest
,
1162 const LttvTracesetContextPosition
*src
)
1165 LttvTracefileContextPosition
*src_tfcp
, *dest_tfcp
;
1167 g_assert(src
->tfcp
->len
== src
->tfcp
->len
);
1169 for(i
=0;i
<src
->tfcp
->len
;i
++) {
1171 &g_array_index(src
->tfcp
, LttvTracefileContextPosition
, i
);
1173 &g_array_index(dest
->tfcp
, LttvTracefileContextPosition
, i
);
1175 dest_tfcp
->used
= src_tfcp
->used
;
1176 dest_tfcp
->tfc
= src_tfcp
->tfc
;
1178 if(src_tfcp
->used
) {
1179 ltt_event_position_copy(
1184 dest
->timestamp
= src
->timestamp
;
1187 gint
lttv_traceset_context_ctx_pos_compare(const LttvTracesetContext
*self
,
1188 const LttvTracesetContextPosition
*pos
)
1193 if(pos
->tfcp
->len
== 0) {
1194 if(lttv_traceset_number(self
->ts
) == 0) return 0;
1197 if(lttv_traceset_number(self
->ts
) == 0)
1200 for(i
=0;i
<pos
->tfcp
->len
;i
++) {
1201 LttvTracefileContextPosition
*tfcp
=
1202 &g_array_index(pos
->tfcp
, LttvTracefileContextPosition
, i
);
1204 if(tfcp
->used
== FALSE
) {
1205 if(ltt_time_compare(tfcp
->tfc
->timestamp
, ltt_time_infinite
) < 0) {
1209 if(ltt_time_compare(tfcp
->tfc
->timestamp
, ltt_time_infinite
) == 0) {
1212 LttEvent
*event
= ltt_tracefile_get_event(tfcp
->tfc
->tf
);
1214 ret
= ltt_event_position_compare((LttEventPosition
*)event
,
1218 if(ret
!= 0) return ret
;
1225 gint
lttv_traceset_context_pos_pos_compare(
1226 const LttvTracesetContextPosition
*pos1
,
1227 const LttvTracesetContextPosition
*pos2
)
1232 if(ltt_time_compare(pos1
->timestamp
, ltt_time_infinite
) == 0) {
1233 if(ltt_time_compare(pos2
->timestamp
, ltt_time_infinite
) == 0)
1238 if(ltt_time_compare(pos2
->timestamp
, ltt_time_infinite
) == 0)
1241 for(i
=0;i
<pos1
->tfcp
->len
;i
++) {
1242 LttvTracefileContextPosition
*tfcp1
=
1243 &g_array_index(pos1
->tfcp
, LttvTracefileContextPosition
, i
);
1245 if(tfcp1
->used
== TRUE
) {
1246 for(j
=0;j
<pos2
->tfcp
->len
;j
++) {
1247 LttvTracefileContextPosition
*tfcp2
=
1248 &g_array_index(pos2
->tfcp
, LttvTracefileContextPosition
, j
);
1250 if(tfcp1
->tfc
== tfcp2
->tfc
) {
1251 if(tfcp2
->used
== TRUE
)
1252 ret
= ltt_event_position_compare(tfcp1
->event
, tfcp2
->event
);
1256 if(ret
!= 0) return ret
;
1261 for(j
=0;j
<pos2
->tfcp
->len
;j
++) {
1262 LttvTracefileContextPosition
*tfcp2
=
1263 &g_array_index(pos2
->tfcp
, LttvTracefileContextPosition
, j
);
1265 if(tfcp1
->tfc
== tfcp2
->tfc
)
1266 if(tfcp2
->used
== TRUE
) ret
= 1;
1267 if(ret
!= 0) return ret
;
1275 LttTime
lttv_traceset_context_position_get_time(
1276 const LttvTracesetContextPosition
*pos
)
1278 return pos
->timestamp
;
1282 LttvTracefileContext
*lttv_traceset_context_get_current_tfc(LttvTracesetContext
*self
)
1284 GTree
*pqueue
= self
->pqueue
;
1285 LttvTracefileContext
*tfc
= NULL
;
1287 g_tree_foreach(pqueue
, get_first
, &tfc
);
1292 /* lttv_process_traceset_synchronize_tracefiles
1294 * Use the sync_position field of the trace set context to synchronize each
1295 * tracefile with the previously saved position.
1297 * If no previous position has been saved, it simply does nothing.
1299 void lttv_process_traceset_synchronize_tracefiles(LttvTracesetContext
*tsc
)
1301 g_assert(lttv_process_traceset_seek_position(tsc
, tsc
->sync_position
) == 0);
1307 void lttv_process_traceset_get_sync_data(LttvTracesetContext
*tsc
)
1309 lttv_traceset_context_position_save(tsc
, tsc
->sync_position
);
1312 struct seek_back_data
{
1313 guint first_event
; /* Index of the first event in the array : we will always
1314 overwrite at this position : this is a circular array.
1317 guint n
; /* number of events requested */
1318 GPtrArray
*array
; /* array of LttvTracesetContextPositions pointers */
1319 LttvFilter
*filter1
;
1320 LttvFilter
*filter2
;
1321 LttvFilter
*filter3
;
1323 check_handler
*check
;
1324 gboolean
*stop_flag
;
1325 guint raw_event_count
;
1328 static gint
seek_back_event_hook(void *hook_data
, void* call_data
)
1330 struct seek_back_data
*sd
= (struct seek_back_data
*)hook_data
;
1331 LttvTracefileContext
*tfc
= (LttvTracefileContext
*)call_data
;
1332 LttvTracesetContext
*tsc
= tfc
->t_context
->ts_context
;
1333 LttvTracesetContextPosition
*pos
;
1335 if(sd
->check
&& sd
->check(sd
->raw_event_count
, sd
->stop_flag
, sd
->data
))
1337 sd
->raw_event_count
++;
1339 if(sd
->filter1
!= NULL
&& sd
->filter1
->head
!= NULL
&&
1340 !lttv_filter_tree_parse(sd
->filter1
->head
,
1341 ltt_tracefile_get_event(tfc
->tf
),
1347 if(sd
->filter2
!= NULL
&& sd
->filter2
->head
!= NULL
&&
1348 !lttv_filter_tree_parse(sd
->filter2
->head
,
1349 ltt_tracefile_get_event(tfc
->tf
),
1355 if(sd
->filter3
!= NULL
&& sd
->filter3
->head
!= NULL
&&
1356 !lttv_filter_tree_parse(sd
->filter3
->head
,
1357 ltt_tracefile_get_event(tfc
->tf
),
1364 pos
= (LttvTracesetContextPosition
*)g_ptr_array_index (sd
->array
,
1367 lttv_traceset_context_position_save(tsc
, pos
);
1369 if(sd
->first_event
>= sd
->array
->len
- 1) sd
->first_event
= 0;
1370 else sd
->first_event
++;
1372 sd
->events_found
= min(sd
->n
, sd
->events_found
+ 1);
1377 /* Seek back n events back from the current position.
1380 * @self The trace set context
1381 * @n number of events to jump over
1382 * @first_offset The initial offset value used.
1383 * never put first_offset at ltt_time_zero.
1384 * @time_seeker Function pointer of the function to use to seek time :
1385 * either lttv_process_traceset_seek_time
1386 * or lttv_state_traceset_seek_time_closest
1387 * @filter The filter to call.
1389 * Return value : the number of events found (might be lower than the number
1390 * requested if beginning of traceset is reached).
1392 * The first search will go back first_offset and try to find the last n events
1393 * matching the filter. If there are not enough, it will try to go back from the
1394 * new trace point from first_offset*2, and so on, until beginning of trace or n
1397 * Note : this function does not take in account the LttvFilter : use the
1398 * similar function found in state.c instead.
1400 * Note2 : the caller must make sure that the LttvTracesetContext does not
1401 * contain any hook, as process_traceset_middle is used in this routine.
1403 guint
lttv_process_traceset_seek_n_backward(LttvTracesetContext
*self
,
1404 guint n
, LttTime first_offset
,
1405 seek_time_fct time_seeker
,
1406 check_handler
*check
,
1407 gboolean
*stop_flag
,
1408 LttvFilter
*filter1
,
1409 LttvFilter
*filter2
,
1410 LttvFilter
*filter3
,
1413 if(lttv_traceset_number(self
->ts
) == 0) return 0;
1414 g_assert(ltt_time_compare(first_offset
, ltt_time_zero
) != 0);
1417 LttvTracesetContextPosition
*next_iter_end_pos
=
1418 lttv_traceset_context_position_new(self
);
1419 LttvTracesetContextPosition
*end_pos
=
1420 lttv_traceset_context_position_new(self
);
1421 LttvTracesetContextPosition
*saved_pos
=
1422 lttv_traceset_context_position_new(self
);
1425 LttTime time_offset
;
1426 struct seek_back_data sd
;
1427 LttvHooks
*hooks
= lttv_hooks_new();
1430 sd
.events_found
= 0;
1431 sd
.array
= g_ptr_array_sized_new(n
);
1432 sd
.filter1
= filter1
;
1433 sd
.filter2
= filter2
;
1434 sd
.filter3
= filter3
;
1438 sd
.stop_flag
= stop_flag
;
1439 sd
.raw_event_count
= 0;
1440 g_ptr_array_set_size(sd
.array
, n
);
1442 g_ptr_array_index (sd
.array
, i
) = lttv_traceset_context_position_new(self
);
1445 lttv_traceset_context_position_save(self
, next_iter_end_pos
);
1446 lttv_traceset_context_position_save(self
, saved_pos
);
1447 /* Get the current time from which we will offset */
1448 time
= lttv_traceset_context_position_get_time(next_iter_end_pos
);
1449 /* the position saved might be end of traceset... */
1450 if(ltt_time_compare(time
, self
->time_span
.end_time
) > 0) {
1451 time
= self
->time_span
.end_time
;
1454 time_offset
= first_offset
;
1456 lttv_hooks_add(hooks
, seek_back_event_hook
, &sd
, LTTV_PRIO_DEFAULT
);
1458 lttv_process_traceset_begin(self
, NULL
, NULL
, NULL
, hooks
, NULL
);
1461 /* stop criteria : - n events found
1462 * - asked_time < beginning of trace */
1463 if(ltt_time_compare(asked_time
, self
->time_span
.start_time
) < 0) break;
1465 lttv_traceset_context_position_copy(end_pos
, next_iter_end_pos
);
1467 /* We must seek the traceset back to time - time_offset */
1468 /* this time becomes the new reference time */
1469 time
= ltt_time_sub(time
, time_offset
);
1472 time_seeker(self
, time
);
1473 lttv_traceset_context_position_save(self
, next_iter_end_pos
);
1474 /* Resync the time in case of a seek_closest */
1475 time
= lttv_traceset_context_position_get_time(next_iter_end_pos
);
1476 if(ltt_time_compare(time
, self
->time_span
.end_time
) > 0) {
1477 time
= self
->time_span
.end_time
;
1480 /* Process the traceset, calling a hook which adds events
1481 * to the array, overwriting the tail. It changes first_event and
1482 * events_found too. */
1483 /* We would like to have a clean context here : no other hook than our's */
1485 lttv_process_traceset_middle(self
, ltt_time_infinite
,
1486 G_MAXUINT
, end_pos
);
1488 if(sd
.events_found
< n
) {
1489 if(sd
.first_event
> 0) {
1490 /* Save the first position */
1491 LttvTracesetContextPosition
*pos
=
1492 (LttvTracesetContextPosition
*)g_ptr_array_index (sd
.array
, 0);
1493 lttv_traceset_context_position_copy(saved_pos
, pos
);
1495 g_assert(n
-sd
.events_found
<= sd
.array
->len
);
1496 /* Change array size to n - events_found */
1497 for(i
=n
-sd
.events_found
;i
<sd
.array
->len
;i
++) {
1498 LttvTracesetContextPosition
*pos
=
1499 (LttvTracesetContextPosition
*)g_ptr_array_index (sd
.array
, i
);
1500 lttv_traceset_context_position_destroy(pos
);
1502 g_ptr_array_set_size(sd
.array
, n
-sd
.events_found
);
1505 } else break; /* Second end criterion : n events found */
1507 time_offset
= ltt_time_mul(time_offset
, BACKWARD_SEEK_MUL
);
1510 lttv_traceset_context_position_destroy(end_pos
);
1511 lttv_traceset_context_position_destroy(next_iter_end_pos
);
1513 lttv_process_traceset_end(self
, NULL
, NULL
, NULL
, hooks
, NULL
);
1515 if(sd
.events_found
>= n
) {
1516 /* Seek the traceset to the first event in the circular array */
1517 LttvTracesetContextPosition
*pos
=
1518 (LttvTracesetContextPosition
*)g_ptr_array_index (sd
.array
,
1520 g_assert(lttv_process_traceset_seek_position(self
, pos
) == 0);
1522 /* Will seek to the last saved position : in the worst case, it will be the
1523 * original position (if events_found is 0) */
1524 g_assert(lttv_process_traceset_seek_position(self
, saved_pos
) == 0);
1527 for(i
=0;i
<sd
.array
->len
;i
++) {
1528 LttvTracesetContextPosition
*pos
=
1529 (LttvTracesetContextPosition
*)g_ptr_array_index (sd
.array
, i
);
1530 lttv_traceset_context_position_destroy(pos
);
1532 g_ptr_array_free(sd
.array
, TRUE
);
1534 lttv_hooks_destroy(hooks
);
1536 lttv_traceset_context_position_destroy(saved_pos
);
1538 return sd
.events_found
;
1542 struct seek_forward_data
{
1543 guint event_count
; /* event counter */
1544 guint n
; /* requested number of events to jump over */
1545 LttvFilter
*filter1
;
1546 LttvFilter
*filter2
;
1547 LttvFilter
*filter3
;
1549 check_handler
*check
;
1550 gboolean
*stop_flag
;
1551 guint raw_event_count
; /* event counter */
1554 static gint
seek_forward_event_hook(void *hook_data
, void* call_data
)
1556 struct seek_forward_data
*sd
= (struct seek_forward_data
*)hook_data
;
1557 LttvTracefileContext
*tfc
= (LttvTracefileContext
*)call_data
;
1559 if(sd
->check
&& sd
->check(sd
->raw_event_count
, sd
->stop_flag
, sd
->data
))
1561 sd
->raw_event_count
++;
1563 if(sd
->filter1
!= NULL
&& sd
->filter1
->head
!= NULL
&&
1564 !lttv_filter_tree_parse(sd
->filter1
->head
,
1565 ltt_tracefile_get_event(tfc
->tf
),
1571 if(sd
->filter2
!= NULL
&& sd
->filter2
->head
!= NULL
&&
1572 !lttv_filter_tree_parse(sd
->filter2
->head
,
1573 ltt_tracefile_get_event(tfc
->tf
),
1579 if(sd
->filter3
!= NULL
&& sd
->filter3
->head
!= NULL
&&
1580 !lttv_filter_tree_parse(sd
->filter3
->head
,
1581 ltt_tracefile_get_event(tfc
->tf
),
1589 if(sd
->event_count
>= sd
->n
)
1593 /* Seek back n events forward from the current position (1 to n)
1594 * 0 is ok too, but it will actually do nothing.
1597 * @self the trace set context
1598 * @n number of events to jump over
1599 * @filter filter to call.
1601 * returns : the number of events jumped over (may be less than requested if end
1602 * of traceset reached) */
1603 guint
lttv_process_traceset_seek_n_forward(LttvTracesetContext
*self
,
1605 check_handler
*check
,
1606 gboolean
*stop_flag
,
1607 LttvFilter
*filter1
,
1608 LttvFilter
*filter2
,
1609 LttvFilter
*filter3
,
1612 struct seek_forward_data sd
;
1615 sd
.filter1
= filter1
;
1616 sd
.filter2
= filter2
;
1617 sd
.filter3
= filter3
;
1620 sd
.stop_flag
= stop_flag
;
1621 sd
.raw_event_count
= 0;
1623 if(sd
.event_count
>= sd
.n
) return sd
.event_count
;
1625 LttvHooks
*hooks
= lttv_hooks_new();
1627 lttv_hooks_add(hooks
, seek_forward_event_hook
, &sd
, LTTV_PRIO_DEFAULT
);
1629 lttv_process_traceset_begin(self
, NULL
, NULL
, NULL
, hooks
, NULL
);
1631 /* it will end on the end of traceset, or the fact that the
1632 * hook returns TRUE.
1634 lttv_process_traceset_middle(self
, ltt_time_infinite
,
1637 /* Here, our position is either the end of traceset, or the exact position
1638 * after n events : leave it like this. This might be placed on an event that
1639 * will be filtered out, we don't care : all we know is that the following
1640 * event filtered in will be the right one. */
1642 lttv_process_traceset_end(self
, NULL
, NULL
, NULL
, hooks
, NULL
);
1644 lttv_hooks_destroy(hooks
);
1646 return sd
.event_count
;