about summary refs log tree commit diff
path: root/third_party/git/trace2/tr2_tgt_perf.c
blob: a8018f18cc87e869d63bc92abf0d4434c320134e (plain) (blame)
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
#include "cache.h"
#include "config.h"
#include "run-command.h"
#include "quote.h"
#include "version.h"
#include "json-writer.h"
#include "trace2/tr2_dst.h"
#include "trace2/tr2_sid.h"
#include "trace2/tr2_sysenv.h"
#include "trace2/tr2_tbuf.h"
#include "trace2/tr2_tgt.h"
#include "trace2/tr2_tls.h"

static struct tr2_dst tr2dst_perf = { TR2_SYSENV_PERF, 0, 0, 0, 0 };

/*
 * Use TR2_SYSENV_PERF_BRIEF to omit the "<time> <file>:<line>"
 * fields from each line written to the builtin performance target.
 *
 * Unit tests may want to use this to help with testing.
 */
static int tr2env_perf_be_brief;

#define TR2FMT_PERF_FL_WIDTH (28)
#define TR2FMT_PERF_MAX_EVENT_NAME (12)
#define TR2FMT_PERF_REPO_WIDTH (3)
#define TR2FMT_PERF_CATEGORY_WIDTH (12)

#define TR2_INDENT (2)
#define TR2_INDENT_LENGTH(ctx) (((ctx)->nr_open_regions - 1) * TR2_INDENT)

static int fn_init(void)
{
	int want = tr2_dst_trace_want(&tr2dst_perf);
	int want_brief;
	const char *brief;

	if (!want)
		return want;

	brief = tr2_sysenv_get(TR2_SYSENV_PERF_BRIEF);
	if (brief && *brief &&
	    ((want_brief = git_parse_maybe_bool(brief)) != -1))
		tr2env_perf_be_brief = want_brief;

	return want;
}

static void fn_term(void)
{
	tr2_dst_trace_disable(&tr2dst_perf);
}

/*
 * Format trace line prefix in human-readable classic format for
 * the performance target:
 *     "[<time> [<file>:<line>] <bar>] <nr_parents> <bar>
 *         <thread_name> <bar> <event_name> <bar> [<repo>] <bar>
 *         [<elapsed_absolute>] [<elapsed_relative>] <bar>
 *         [<category>] <bar> [<dots>] "
 */
static void perf_fmt_prepare(const char *event_name,
			     struct tr2tls_thread_ctx *ctx, const char *file,
			     int line, const struct repository *repo,
			     uint64_t *p_us_elapsed_absolute,
			     uint64_t *p_us_elapsed_relative,
			     const char *category, struct strbuf *buf)
{
	int len;

	strbuf_setlen(buf, 0);

	if (!tr2env_perf_be_brief) {
		struct tr2_tbuf tb_now;
		size_t fl_end_col;

		tr2_tbuf_local_time(&tb_now);
		strbuf_addstr(buf, tb_now.buf);
		strbuf_addch(buf, ' ');

		fl_end_col = buf->len + TR2FMT_PERF_FL_WIDTH;

		if (file && *file) {
			struct strbuf buf_fl = STRBUF_INIT;

			strbuf_addf(&buf_fl, "%s:%d", file, line);

			if (buf_fl.len <= TR2FMT_PERF_FL_WIDTH)
				strbuf_addbuf(buf, &buf_fl);
			else {
				size_t avail = TR2FMT_PERF_FL_WIDTH - 3;
				strbuf_addstr(buf, "...");
				strbuf_add(buf,
					   &buf_fl.buf[buf_fl.len - avail],
					   avail);
			}

			strbuf_release(&buf_fl);
		}

		while (buf->len < fl_end_col)
			strbuf_addch(buf, ' ');

		strbuf_addstr(buf, " | ");
	}

	strbuf_addf(buf, "d%d | ", tr2_sid_depth());
	strbuf_addf(buf, "%-*s | %-*s | ", TR2_MAX_THREAD_NAME,
		    ctx->thread_name.buf, TR2FMT_PERF_MAX_EVENT_NAME,
		    event_name);

	len = buf->len + TR2FMT_PERF_REPO_WIDTH;
	if (repo)
		strbuf_addf(buf, "r%d ", repo->trace2_repo_id);
	while (buf->len < len)
		strbuf_addch(buf, ' ');
	strbuf_addstr(buf, " | ");

	if (p_us_elapsed_absolute)
		strbuf_addf(buf, "%9.6f | ",
			    ((double)(*p_us_elapsed_absolute)) / 1000000.0);
	else
		strbuf_addf(buf, "%9s | ", " ");

	if (p_us_elapsed_relative)
		strbuf_addf(buf, "%9.6f | ",
			    ((double)(*p_us_elapsed_relative)) / 1000000.0);
	else
		strbuf_addf(buf, "%9s | ", " ");

	strbuf_addf(buf, "%-*.*s | ", TR2FMT_PERF_CATEGORY_WIDTH,
		    TR2FMT_PERF_CATEGORY_WIDTH, (category ? category : ""));

	if (ctx->nr_open_regions > 0)
		strbuf_addchars(buf, '.', TR2_INDENT_LENGTH(ctx));
}

static void perf_io_write_fl(const char *file, int line, const char *event_name,
			     const struct repository *repo,
			     uint64_t *p_us_elapsed_absolute,
			     uint64_t *p_us_elapsed_relative,
			     const char *category,
			     const struct strbuf *buf_payload)
{
	struct tr2tls_thread_ctx *ctx = tr2tls_get_self();
	struct strbuf buf_line = STRBUF_INIT;

	perf_fmt_prepare(event_name, ctx, file, line, repo,
			 p_us_elapsed_absolute, p_us_elapsed_relative, category,
			 &buf_line);
	strbuf_addbuf(&buf_line, buf_payload);
	tr2_dst_write_line(&tr2dst_perf, &buf_line);
	strbuf_release(&buf_line);
}

static void fn_version_fl(const char *file, int line)
{
	const char *event_name = "version";
	struct strbuf buf_payload = STRBUF_INIT;

	strbuf_addstr(&buf_payload, git_version_string);

	perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL,
			 &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_start_fl(const char *file, int line,
			uint64_t us_elapsed_absolute, const char **argv)
{
	const char *event_name = "start";
	struct strbuf buf_payload = STRBUF_INIT;

	sq_append_quote_argv_pretty(&buf_payload, argv);

	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
			 NULL, NULL, &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_exit_fl(const char *file, int line, uint64_t us_elapsed_absolute,
		       int code)
{
	const char *event_name = "exit";
	struct strbuf buf_payload = STRBUF_INIT;

	strbuf_addf(&buf_payload, "code:%d", code);

	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
			 NULL, NULL, &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_signal(uint64_t us_elapsed_absolute, int signo)
{
	const char *event_name = "signal";
	struct strbuf buf_payload = STRBUF_INIT;

	strbuf_addf(&buf_payload, "signo:%d", signo);

	perf_io_write_fl(__FILE__, __LINE__, event_name, NULL,
			 &us_elapsed_absolute, NULL, NULL, &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_atexit(uint64_t us_elapsed_absolute, int code)
{
	const char *event_name = "atexit";
	struct strbuf buf_payload = STRBUF_INIT;

	strbuf_addf(&buf_payload, "code:%d", code);

	perf_io_write_fl(__FILE__, __LINE__, event_name, NULL,
			 &us_elapsed_absolute, NULL, NULL, &buf_payload);
	strbuf_release(&buf_payload);
}

static void maybe_append_string_va(struct strbuf *buf, const char *fmt,
				   va_list ap)
{
	if (fmt && *fmt) {
		va_list copy_ap;

		va_copy(copy_ap, ap);
		strbuf_vaddf(buf, fmt, copy_ap);
		va_end(copy_ap);
		return;
	}
}

static void fn_error_va_fl(const char *file, int line, const char *fmt,
			   va_list ap)
{
	const char *event_name = "error";
	struct strbuf buf_payload = STRBUF_INIT;

	maybe_append_string_va(&buf_payload, fmt, ap);

	perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL,
			 &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_command_path_fl(const char *file, int line, const char *pathname)
{
	const char *event_name = "cmd_path";
	struct strbuf buf_payload = STRBUF_INIT;

	strbuf_addstr(&buf_payload, pathname);

	perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL,
			 &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_command_name_fl(const char *file, int line, const char *name,
			       const char *hierarchy)
{
	const char *event_name = "cmd_name";
	struct strbuf buf_payload = STRBUF_INIT;

	strbuf_addstr(&buf_payload, name);
	if (hierarchy && *hierarchy)
		strbuf_addf(&buf_payload, " (%s)", hierarchy);

	perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL,
			 &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_command_mode_fl(const char *file, int line, const char *mode)
{
	const char *event_name = "cmd_mode";
	struct strbuf buf_payload = STRBUF_INIT;

	strbuf_addstr(&buf_payload, mode);

	perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL,
			 &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_alias_fl(const char *file, int line, const char *alias,
			const char **argv)
{
	const char *event_name = "alias";
	struct strbuf buf_payload = STRBUF_INIT;

	strbuf_addf(&buf_payload, "alias:%s argv:[", alias);
	sq_append_quote_argv_pretty(&buf_payload, argv);
	strbuf_addch(&buf_payload, ']');

	perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL,
			 &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_child_start_fl(const char *file, int line,
			      uint64_t us_elapsed_absolute,
			      const struct child_process *cmd)
{
	const char *event_name = "child_start";
	struct strbuf buf_payload = STRBUF_INIT;

	if (cmd->trace2_hook_name) {
		strbuf_addf(&buf_payload, "[ch%d] class:hook hook:%s",
			    cmd->trace2_child_id, cmd->trace2_hook_name);
	} else {
		const char *child_class =
			cmd->trace2_child_class ? cmd->trace2_child_class : "?";
		strbuf_addf(&buf_payload, "[ch%d] class:%s",
			    cmd->trace2_child_id, child_class);
	}

	if (cmd->dir) {
		strbuf_addstr(&buf_payload, " cd:");
		sq_quote_buf_pretty(&buf_payload, cmd->dir);
	}

	strbuf_addstr(&buf_payload, " argv:[");
	if (cmd->git_cmd) {
		strbuf_addstr(&buf_payload, "git");
		if (cmd->argv[0])
			strbuf_addch(&buf_payload, ' ');
	}
	sq_append_quote_argv_pretty(&buf_payload, cmd->argv);
	strbuf_addch(&buf_payload, ']');

	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
			 NULL, NULL, &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_child_exit_fl(const char *file, int line,
			     uint64_t us_elapsed_absolute, int cid, int pid,
			     int code, uint64_t us_elapsed_child)
{
	const char *event_name = "child_exit";
	struct strbuf buf_payload = STRBUF_INIT;

	strbuf_addf(&buf_payload, "[ch%d] pid:%d code:%d", cid, pid, code);

	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
			 &us_elapsed_child, NULL, &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_thread_start_fl(const char *file, int line,
			       uint64_t us_elapsed_absolute)
{
	const char *event_name = "thread_start";
	struct strbuf buf_payload = STRBUF_INIT;

	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
			 NULL, NULL, &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_thread_exit_fl(const char *file, int line,
			      uint64_t us_elapsed_absolute,
			      uint64_t us_elapsed_thread)
{
	const char *event_name = "thread_exit";
	struct strbuf buf_payload = STRBUF_INIT;

	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
			 &us_elapsed_thread, NULL, &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_exec_fl(const char *file, int line, uint64_t us_elapsed_absolute,
		       int exec_id, const char *exe, const char **argv)
{
	const char *event_name = "exec";
	struct strbuf buf_payload = STRBUF_INIT;

	strbuf_addf(&buf_payload, "id:%d ", exec_id);
	strbuf_addstr(&buf_payload, "argv:[");
	if (exe) {
		strbuf_addstr(&buf_payload, exe);
		if (argv[0])
			strbuf_addch(&buf_payload, ' ');
	}
	sq_append_quote_argv_pretty(&buf_payload, argv);
	strbuf_addch(&buf_payload, ']');

	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
			 NULL, NULL, &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_exec_result_fl(const char *file, int line,
			      uint64_t us_elapsed_absolute, int exec_id,
			      int code)
{
	const char *event_name = "exec_result";
	struct strbuf buf_payload = STRBUF_INIT;

	strbuf_addf(&buf_payload, "id:%d code:%d", exec_id, code);
	if (code > 0)
		strbuf_addf(&buf_payload, " err:%s", strerror(code));

	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
			 NULL, NULL, &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_param_fl(const char *file, int line, const char *param,
			const char *value)
{
	const char *event_name = "def_param";
	struct strbuf buf_payload = STRBUF_INIT;

	strbuf_addf(&buf_payload, "%s:%s", param, value);

	perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL,
			 &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_repo_fl(const char *file, int line,
		       const struct repository *repo)
{
	const char *event_name = "def_repo";
	struct strbuf buf_payload = STRBUF_INIT;

	strbuf_addstr(&buf_payload, "worktree:");
	sq_quote_buf_pretty(&buf_payload, repo->worktree);

	perf_io_write_fl(file, line, event_name, repo, NULL, NULL, NULL,
			 &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_region_enter_printf_va_fl(const char *file, int line,
					 uint64_t us_elapsed_absolute,
					 const char *category,
					 const char *label,
					 const struct repository *repo,
					 const char *fmt, va_list ap)
{
	const char *event_name = "region_enter";
	struct strbuf buf_payload = STRBUF_INIT;

	if (label)
		strbuf_addf(&buf_payload, "label:%s", label);
	if (fmt && *fmt) {
		strbuf_addch(&buf_payload, ' ');
		maybe_append_string_va(&buf_payload, fmt, ap);
	}

	perf_io_write_fl(file, line, event_name, repo, &us_elapsed_absolute,
			 NULL, category, &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_region_leave_printf_va_fl(
	const char *file, int line, uint64_t us_elapsed_absolute,
	uint64_t us_elapsed_region, const char *category, const char *label,
	const struct repository *repo, const char *fmt, va_list ap)
{
	const char *event_name = "region_leave";
	struct strbuf buf_payload = STRBUF_INIT;

	if (label)
		strbuf_addf(&buf_payload, "label:%s", label);
	if (fmt && *fmt) {
		strbuf_addch(&buf_payload, ' ' );
		maybe_append_string_va(&buf_payload, fmt, ap);
	}

	perf_io_write_fl(file, line, event_name, repo, &us_elapsed_absolute,
			 &us_elapsed_region, category, &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_data_fl(const char *file, int line, uint64_t us_elapsed_absolute,
		       uint64_t us_elapsed_region, const char *category,
		       const struct repository *repo, const char *key,
		       const char *value)
{
	const char *event_name = "data";
	struct strbuf buf_payload = STRBUF_INIT;

	strbuf_addf(&buf_payload, "%s:%s", key, value);

	perf_io_write_fl(file, line, event_name, repo, &us_elapsed_absolute,
			 &us_elapsed_region, category, &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_data_json_fl(const char *file, int line,
			    uint64_t us_elapsed_absolute,
			    uint64_t us_elapsed_region, const char *category,
			    const struct repository *repo, const char *key,
			    const struct json_writer *value)
{
	const char *event_name = "data_json";
	struct strbuf buf_payload = STRBUF_INIT;

	strbuf_addf(&buf_payload, "%s:%s", key, value->json.buf);

	perf_io_write_fl(file, line, event_name, repo, &us_elapsed_absolute,
			 &us_elapsed_region, category, &buf_payload);
	strbuf_release(&buf_payload);
}

static void fn_printf_va_fl(const char *file, int line,
			    uint64_t us_elapsed_absolute, const char *fmt,
			    va_list ap)
{
	const char *event_name = "printf";
	struct strbuf buf_payload = STRBUF_INIT;

	maybe_append_string_va(&buf_payload, fmt, ap);

	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
			 NULL, NULL, &buf_payload);
	strbuf_release(&buf_payload);
}

struct tr2_tgt tr2_tgt_perf = {
	&tr2dst_perf,

	fn_init,
	fn_term,

	fn_version_fl,
	fn_start_fl,
	fn_exit_fl,
	fn_signal,
	fn_atexit,
	fn_error_va_fl,
	fn_command_path_fl,
	fn_command_name_fl,
	fn_command_mode_fl,
	fn_alias_fl,
	fn_child_start_fl,
	fn_child_exit_fl,
	fn_thread_start_fl,
	fn_thread_exit_fl,
	fn_exec_fl,
	fn_exec_result_fl,
	fn_param_fl,
	fn_repo_fl,
	fn_region_enter_printf_va_fl,
	fn_region_leave_printf_va_fl,
	fn_data_fl,
	fn_data_json_fl,
	fn_printf_va_fl,
};