summaryrefslogtreecommitdiff
path: root/trace2.c
blob: 8bbad568871dc2a8526d47ae4cb9f36f49fcb7a3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
#include "cache.h"
#include "config.h"
#include "json-writer.h"
#include "quote.h"
#include "run-command.h"
#include "sigchain.h"
#include "thread-utils.h"
#include "version.h"
#include "trace2/tr2_cfg.h"
#include "trace2/tr2_cmd_name.h"
#include "trace2/tr2_dst.h"
#include "trace2/tr2_sid.h"
#include "trace2/tr2_tgt.h"
#include "trace2/tr2_tls.h"
 
static int trace2_enabled;
 
static int tr2_next_child_id; /* modify under lock */
static int tr2_next_exec_id; /* modify under lock */
static int tr2_next_repo_id = 1; /* modify under lock. zero is reserved */
 
/*
 * A table of the builtin TRACE2 targets.  Each of these may be independently
 * enabled or disabled.  Each TRACE2 API method will try to write an event to
 * *each* of the enabled targets.
 */
/* clang-format off */
static struct tr2_tgt *tr2_tgt_builtins[] =
{
	&tr2_tgt_normal,
	&tr2_tgt_perf,
	&tr2_tgt_event,
	NULL
};
/* clang-format on */
 
/* clang-format off */
#define for_each_builtin(j, tgt_j)			\
	for (j = 0, tgt_j = tr2_tgt_builtins[j];	\
	     tgt_j;					\
	     j++, tgt_j = tr2_tgt_builtins[j])
/* clang-format on */
 
/* clang-format off */
#define for_each_wanted_builtin(j, tgt_j)            \
	for_each_builtin(j, tgt_j)                   \
		if (tr2_dst_trace_want(tgt_j->pdst))
/* clang-format on */
 
/*
 * Force (rather than lazily) initialize any of the requested
 * builtin TRACE2 targets at startup (and before we've seen an
 * actual TRACE2 event call) so we can see if we need to setup
 * the TR2 and TLS machinery.
 *
 * Return the number of builtin targets enabled.
 */
static int tr2_tgt_want_builtins(void)
{
	struct tr2_tgt *tgt_j;
	int j;
	int sum = 0;
 
	for_each_builtin (j, tgt_j)
		if (tgt_j->pfn_init())
			sum++;
 
	return sum;
}
 
/*
 * Properly terminate each builtin target.  Give each target
 * a chance to write a summary event and/or flush if necessary
 * and then close the fd.
 */
static void tr2_tgt_disable_builtins(void)
{
	struct tr2_tgt *tgt_j;
	int j;
 
	for_each_builtin (j, tgt_j)
		tgt_j->pfn_term();
}
 
static int tr2main_exit_code;
 
/*
 * Our atexit routine should run after everything has finished.
 *
 * Note that events generated here might not actually appear if
 * we are writing to fd 1 or 2 and our atexit routine runs after
 * the pager's atexit routine (since it closes them to shutdown
 * the pipes).
 */
static void tr2main_atexit_handler(void)
{
	struct tr2_tgt *tgt_j;
	int j;
	uint64_t us_now;
	uint64_t us_elapsed_absolute;
 
	us_now = getnanotime() / 1000;
	us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 
	/*
	 * Clear any unbalanced regions so that our atexit message
	 * does not appear nested.  This improves the appearance of
	 * the trace output if someone calls die(), for example.
	 */
	tr2tls_pop_unwind_self();
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_atexit)
			tgt_j->pfn_atexit(us_elapsed_absolute,
					  tr2main_exit_code);
 
	tr2_tgt_disable_builtins();
 
	tr2tls_release();
	tr2_sid_release();
	tr2_cmd_name_release();
	tr2_cfg_free_patterns();
 
	trace2_enabled = 0;
}
 
static void tr2main_signal_handler(int signo)
{
	struct tr2_tgt *tgt_j;
	int j;
	uint64_t us_now;
	uint64_t us_elapsed_absolute;
 
	us_now = getnanotime() / 1000;
	us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_signal)
			tgt_j->pfn_signal(us_elapsed_absolute, signo);
 
	sigchain_pop(signo);
	raise(signo);
}
 
void trace2_initialize_fl(const char *file, int line)
{
	struct tr2_tgt *tgt_j;
	int j;
 
	if (trace2_enabled)
		return;
 
	if (!tr2_tgt_want_builtins())
		return;
	trace2_enabled = 1;
 
	tr2_sid_get();
 
	atexit(tr2main_atexit_handler);
	sigchain_push(SIGPIPE, tr2main_signal_handler);
	tr2tls_init();
 
	/*
	 * Emit 'version' message on each active builtin target.
	 */
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_version_fl)
			tgt_j->pfn_version_fl(file, line);
}
 
int trace2_is_enabled(void)
{
	return trace2_enabled;
}
 
void trace2_cmd_start_fl(const char *file, int line, const char **argv)
{
	struct tr2_tgt *tgt_j;
	int j;
 
	if (!trace2_enabled)
		return;
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_start_fl)
			tgt_j->pfn_start_fl(file, line, argv);
}
 
int trace2_cmd_exit_fl(const char *file, int line, int code)
{
	struct tr2_tgt *tgt_j;
	int j;
	uint64_t us_now;
	uint64_t us_elapsed_absolute;
 
	code &= 0xff;
 
	if (!trace2_enabled)
		return code;
 
	tr2main_exit_code = code;
 
	us_now = getnanotime() / 1000;
	us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_exit_fl)
			tgt_j->pfn_exit_fl(file, line, us_elapsed_absolute,
					   code);
 
	return code;
}
 
void trace2_cmd_error_va_fl(const char *file, int line, const char *fmt,
			    va_list ap)
{
	struct tr2_tgt *tgt_j;
	int j;
 
	if (!trace2_enabled)
		return;
 
	/*
	 * We expect each target function to treat 'ap' as constant
	 * and use va_copy (because an 'ap' can only be walked once).
	 */
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_error_va_fl)
			tgt_j->pfn_error_va_fl(file, line, fmt, ap);
}
 
void trace2_cmd_path_fl(const char *file, int line, const char *pathname)
{
	struct tr2_tgt *tgt_j;
	int j;
 
	if (!trace2_enabled)
		return;
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_command_path_fl)
			tgt_j->pfn_command_path_fl(file, line, pathname);
}
 
void trace2_cmd_name_fl(const char *file, int line, const char *name)
{
	struct tr2_tgt *tgt_j;
	const char *hierarchy;
	int j;
 
	if (!trace2_enabled)
		return;
 
	tr2_cmd_name_append_hierarchy(name);
	hierarchy = tr2_cmd_name_get_hierarchy();
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_command_name_fl)
			tgt_j->pfn_command_name_fl(file, line, name, hierarchy);
}
 
void trace2_cmd_mode_fl(const char *file, int line, const char *mode)
{
	struct tr2_tgt *tgt_j;
	int j;
 
	if (!trace2_enabled)
		return;
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_command_mode_fl)
			tgt_j->pfn_command_mode_fl(file, line, mode);
}
 
void trace2_cmd_alias_fl(const char *file, int line, const char *alias,
			 const char **argv)
{
	struct tr2_tgt *tgt_j;
	int j;
 
	if (!trace2_enabled)
		return;
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_alias_fl)
			tgt_j->pfn_alias_fl(file, line, alias, argv);
}
 
void trace2_cmd_list_config_fl(const char *file, int line)
{
	if (!trace2_enabled)
		return;
 
	tr2_cfg_list_config_fl(file, line);
}
 
void trace2_cmd_set_config_fl(const char *file, int line, const char *key,
			      const char *value)
{
	if (!trace2_enabled)
		return;
 
	tr2_cfg_set_fl(file, line, key, value);
}
 
void trace2_child_start_fl(const char *file, int line,
			   struct child_process *cmd)
{
	struct tr2_tgt *tgt_j;
	int j;
	uint64_t us_now;
	uint64_t us_elapsed_absolute;
 
	if (!trace2_enabled)
		return;
 
	us_now = getnanotime() / 1000;
	us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 
	cmd->trace2_child_id = tr2tls_locked_increment(&tr2_next_child_id);
	cmd->trace2_child_us_start = us_now;
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_child_start_fl)
			tgt_j->pfn_child_start_fl(file, line,
						  us_elapsed_absolute, cmd);
}
 
void trace2_child_exit_fl(const char *file, int line, struct child_process *cmd,
			  int child_exit_code)
{
	struct tr2_tgt *tgt_j;
	int j;
	uint64_t us_now;
	uint64_t us_elapsed_absolute;
	uint64_t us_elapsed_child;
 
	if (!trace2_enabled)
		return;
 
	us_now = getnanotime() / 1000;
	us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 
	if (cmd->trace2_child_us_start)
		us_elapsed_child = us_now - cmd->trace2_child_us_start;
	else
		us_elapsed_child = 0;
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_child_exit_fl)
			tgt_j->pfn_child_exit_fl(file, line,
						 us_elapsed_absolute,
						 cmd->trace2_child_id, cmd->pid,
						 child_exit_code,
						 us_elapsed_child);
}
 
int trace2_exec_fl(const char *file, int line, const char *exe,
		   const char **argv)
{
	struct tr2_tgt *tgt_j;
	int j;
	int exec_id;
	uint64_t us_now;
	uint64_t us_elapsed_absolute;
 
	if (!trace2_enabled)
		return -1;
 
	us_now = getnanotime() / 1000;
	us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 
	exec_id = tr2tls_locked_increment(&tr2_next_exec_id);
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_exec_fl)
			tgt_j->pfn_exec_fl(file, line, us_elapsed_absolute,
					   exec_id, exe, argv);
 
	return exec_id;
}
 
void trace2_exec_result_fl(const char *file, int line, int exec_id, int code)
{
	struct tr2_tgt *tgt_j;
	int j;
	uint64_t us_now;
	uint64_t us_elapsed_absolute;
 
	if (!trace2_enabled)
		return;
 
	us_now = getnanotime() / 1000;
	us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_exec_result_fl)
			tgt_j->pfn_exec_result_fl(
				file, line, us_elapsed_absolute, exec_id, code);
}
 
void trace2_thread_start_fl(const char *file, int line, const char *thread_name)
{
	struct tr2_tgt *tgt_j;
	int j;
	uint64_t us_now;
	uint64_t us_elapsed_absolute;
 
	if (!trace2_enabled)
		return;
 
	if (tr2tls_is_main_thread()) {
		/*
		 * We should only be called from the new thread's thread-proc,
		 * so this is technically a bug.  But in those cases where the
		 * main thread also runs the thread-proc function (or when we
		 * are built with threading disabled), we need to allow it.
		 *
		 * Convert this call to a region-enter so the nesting looks
		 * correct.
		 */
		trace2_region_enter_printf_fl(file, line, NULL, NULL, NULL,
					      "thread-proc on main: %s",
					      thread_name);
		return;
	}
 
	us_now = getnanotime() / 1000;
	us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 
	tr2tls_create_self(thread_name);
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_thread_start_fl)
			tgt_j->pfn_thread_start_fl(file, line,
						   us_elapsed_absolute);
}
 
void trace2_thread_exit_fl(const char *file, int line)
{
	struct tr2_tgt *tgt_j;
	int j;
	uint64_t us_now;
	uint64_t us_elapsed_absolute;
	uint64_t us_elapsed_thread;
 
	if (!trace2_enabled)
		return;
 
	if (tr2tls_is_main_thread()) {
		/*
		 * We should only be called from the exiting thread's
		 * thread-proc, so this is technically a bug.  But in
		 * those cases where the main thread also runs the
		 * thread-proc function (or when we are built with
		 * threading disabled), we need to allow it.
		 *
		 * Convert this call to a region-leave so the nesting
		 * looks correct.
		 */
		trace2_region_leave_printf_fl(file, line, NULL, NULL, NULL,
					      "thread-proc on main");
		return;
	}
 
	us_now = getnanotime() / 1000;
	us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 
	/*
	 * Clear any unbalanced regions and then get the relative time
	 * for the outer-most region (which we pushed when the thread
	 * started).  This gives us the run time of the thread.
	 */
	tr2tls_pop_unwind_self();
	us_elapsed_thread = tr2tls_region_elasped_self(us_now);
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_thread_exit_fl)
			tgt_j->pfn_thread_exit_fl(file, line,
						  us_elapsed_absolute,
						  us_elapsed_thread);
 
	tr2tls_unset_self();
}
 
void trace2_def_param_fl(const char *file, int line, const char *param,
			 const char *value)
{
	struct tr2_tgt *tgt_j;
	int j;
 
	if (!trace2_enabled)
		return;
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_param_fl)
			tgt_j->pfn_param_fl(file, line, param, value);
}
 
void trace2_def_repo_fl(const char *file, int line, struct repository *repo)
{
	struct tr2_tgt *tgt_j;
	int j;
 
	if (!trace2_enabled)
		return;
 
	if (repo->trace2_repo_id)
		return;
 
	repo->trace2_repo_id = tr2tls_locked_increment(&tr2_next_repo_id);
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_repo_fl)
			tgt_j->pfn_repo_fl(file, line, repo);
}
 
void trace2_region_enter_printf_va_fl(const char *file, int line,
				      const char *category, const char *label,
				      const struct repository *repo,
				      const char *fmt, va_list ap)
{
	struct tr2_tgt *tgt_j;
	int j;
	uint64_t us_now;
	uint64_t us_elapsed_absolute;
 
	if (!trace2_enabled)
		return;
 
	us_now = getnanotime() / 1000;
	us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 
	/*
	 * Print the region-enter message at the current nesting
	 * (indentation) level and then push a new level.
	 *
	 * We expect each target function to treat 'ap' as constant
	 * and use va_copy.
	 */
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_region_enter_printf_va_fl)
			tgt_j->pfn_region_enter_printf_va_fl(
				file, line, us_elapsed_absolute, category,
				label, repo, fmt, ap);
 
	tr2tls_push_self(us_now);
}
 
void trace2_region_enter_fl(const char *file, int line, const char *category,
			    const char *label, const struct repository *repo, ...)
{
	va_list ap;
	va_start(ap, repo);
	trace2_region_enter_printf_va_fl(file, line, category, label, repo,
					 NULL, ap);
	va_end(ap);
 
}
 
void trace2_region_enter_printf_fl(const char *file, int line,
				   const char *category, const char *label,
				   const struct repository *repo,
				   const char *fmt, ...)
{
	va_list ap;
 
	va_start(ap, fmt);
	trace2_region_enter_printf_va_fl(file, line, category, label, repo, fmt,
					 ap);
	va_end(ap);
}
 
#ifndef HAVE_VARIADIC_MACROS
void trace2_region_enter_printf(const char *category, const char *label,
				const struct repository *repo, const char *fmt,
				...)
{
	va_list ap;
 
	va_start(ap, fmt);
	trace2_region_enter_printf_va_fl(NULL, 0, category, label, repo, fmt,
					 ap);
	va_end(ap);
}
#endif
 
void trace2_region_leave_printf_va_fl(const char *file, int line,
				      const char *category, const char *label,
				      const struct repository *repo,
				      const char *fmt, va_list ap)
{
	struct tr2_tgt *tgt_j;
	int j;
	uint64_t us_now;
	uint64_t us_elapsed_absolute;
	uint64_t us_elapsed_region;
 
	if (!trace2_enabled)
		return;
 
	us_now = getnanotime() / 1000;
	us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 
	/*
	 * Get the elapsed time in the current region before we
	 * pop it off the stack.  Pop the stack.  And then print
	 * the perf message at the new (shallower) level so that
	 * it lines up with the corresponding push/enter.
	 */
	us_elapsed_region = tr2tls_region_elasped_self(us_now);
 
	tr2tls_pop_self();
 
	/*
	 * We expect each target function to treat 'ap' as constant
	 * and use va_copy.
	 */
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_region_leave_printf_va_fl)
			tgt_j->pfn_region_leave_printf_va_fl(
				file, line, us_elapsed_absolute,
				us_elapsed_region, category, label, repo, fmt,
				ap);
}
 
void trace2_region_leave_fl(const char *file, int line, const char *category,
			    const char *label, const struct repository *repo, ...)
{
	va_list ap;
	va_start(ap, repo);
	trace2_region_leave_printf_va_fl(file, line, category, label, repo,
					 NULL, ap);
	va_end(ap);
}
 
void trace2_region_leave_printf_fl(const char *file, int line,
				   const char *category, const char *label,
				   const struct repository *repo,
				   const char *fmt, ...)
{
	va_list ap;
 
	va_start(ap, fmt);
	trace2_region_leave_printf_va_fl(file, line, category, label, repo, fmt,
					 ap);
	va_end(ap);
}
 
#ifndef HAVE_VARIADIC_MACROS
void trace2_region_leave_printf(const char *category, const char *label,
				const struct repository *repo, const char *fmt,
				...)
{
	va_list ap;
 
	va_start(ap, fmt);
	trace2_region_leave_printf_va_fl(NULL, 0, category, label, repo, fmt,
					 ap);
	va_end(ap);
}
#endif
 
void trace2_data_string_fl(const char *file, int line, const char *category,
			   const struct repository *repo, const char *key,
			   const char *value)
{
	struct tr2_tgt *tgt_j;
	int j;
	uint64_t us_now;
	uint64_t us_elapsed_absolute;
	uint64_t us_elapsed_region;
 
	if (!trace2_enabled)
		return;
 
	us_now = getnanotime() / 1000;
	us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
	us_elapsed_region = tr2tls_region_elasped_self(us_now);
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_data_fl)
			tgt_j->pfn_data_fl(file, line, us_elapsed_absolute,
					   us_elapsed_region, category, repo,
					   key, value);
}
 
void trace2_data_intmax_fl(const char *file, int line, const char *category,
			   const struct repository *repo, const char *key,
			   intmax_t value)
{
	struct strbuf buf_string = STRBUF_INIT;
 
	if (!trace2_enabled)
		return;
 
	strbuf_addf(&buf_string, "%" PRIdMAX, value);
	trace2_data_string_fl(file, line, category, repo, key, buf_string.buf);
	strbuf_release(&buf_string);
}
 
void trace2_data_json_fl(const char *file, int line, const char *category,
			 const struct repository *repo, const char *key,
			 const struct json_writer *value)
{
	struct tr2_tgt *tgt_j;
	int j;
	uint64_t us_now;
	uint64_t us_elapsed_absolute;
	uint64_t us_elapsed_region;
 
	if (!trace2_enabled)
		return;
 
	us_now = getnanotime() / 1000;
	us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
	us_elapsed_region = tr2tls_region_elasped_self(us_now);
 
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_data_fl)
			tgt_j->pfn_data_json_fl(file, line, us_elapsed_absolute,
						us_elapsed_region, category,
						repo, key, value);
}
 
void trace2_printf_va_fl(const char *file, int line, const char *fmt,
			 va_list ap)
{
	struct tr2_tgt *tgt_j;
	int j;
	uint64_t us_now;
	uint64_t us_elapsed_absolute;
 
	if (!trace2_enabled)
		return;
 
	us_now = getnanotime() / 1000;
	us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 
	/*
	 * We expect each target function to treat 'ap' as constant
	 * and use va_copy.
	 */
	for_each_wanted_builtin (j, tgt_j)
		if (tgt_j->pfn_printf_va_fl)
			tgt_j->pfn_printf_va_fl(file, line, us_elapsed_absolute,
						fmt, ap);
}
 
void trace2_printf_fl(const char *file, int line, const char *fmt, ...)
{
	va_list ap;
 
	va_start(ap, fmt);
	trace2_printf_va_fl(file, line, fmt, ap);
	va_end(ap);
}
 
#ifndef HAVE_VARIADIC_MACROS
void trace2_printf(const char *fmt, ...)
{
	va_list ap;
 
	va_start(ap, fmt);
	trace2_printf_va_fl(NULL, 0, fmt, ap);
	va_end(ap);
}
#endif