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chromium / external / github.com / git / git / refs/tags/v2.52.0-rc1 / . / trace.c
blob: 9b99460db82a28634c09260b42f311f7c69f4d59 [file] [log] [blame]
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]1/*
2 * GIT - The information manager from hell
3 *
4 * Copyright (C) 2000-2002 Michael R. Elkins <me@mutt.org>
5 * Copyright (C) 2002-2004 Oswald Buddenhagen <ossi@users.sf.net>
6 * Copyright (C) 2004 Theodore Y. Ts'o <tytso@mit.edu>
7 * Copyright (C) 2006 Mike McCormack
8 * Copyright (C) 2006 Christian Couder
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
Josh Sorefd05b08c2023-11-24 03:35:13[diff] [blame]21 * along with this program; if not, see <https://www.gnu.org/licenses/>.
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]22 */
23
Patrick Steinhardt41f43b82024-12-06 10:27:19[diff] [blame]24#define DISABLE_SIGN_COMPARE_WARNINGS
Patrick Steinhardt246deea2024-09-12 11:29:24[diff] [blame]25
Elijah Newren5579f442023-04-11 07:41:48[diff] [blame]26#include "git-compat-util.h"
Elijah Newren0b027f62023-03-21 06:25:58[diff] [blame]27#include "abspath.h"
Patrick Steinhardt246deea2024-09-12 11:29:24[diff] [blame]28#include "repository.h"
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]29#include "quote.h"
Elijah Newrene38da482023-03-21 06:26:05[diff] [blame]30#include "setup.h"
Elijah Newren74ea5c92023-04-11 03:00:38[diff] [blame]31#include "trace.h"
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]32
Gennady Kupava406102a2017-11-26 20:11:18[diff] [blame]33struct trace_key trace_default_key = { "GIT_TRACE", 0, 0, 0 };
Gennady Kupava8eeb25c2017-11-26 20:11:19[diff] [blame]34struct trace_key trace_perf_key = TRACE_KEY_INIT(PERFORMANCE);
Nguyễn Thái Ngọc Duycb507612018-03-30 18:34:59[diff] [blame]35struct trace_key trace_setup_key = TRACE_KEY_INIT(SETUP);
Jeff Kingc81539b2016-08-03 22:56:57[diff] [blame]36
Jeff King06796602011-02-24 14:28:41[diff] [blame]37/* Get a trace file descriptor from "key" env variable. */
Jonathan Tan7167a622020-05-11 17:43:10[diff] [blame]38static int get_trace_fd(struct trace_key *key, const char *override_envvar)
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]39{
Karsten Blees6aa30852014-07-12 00:00:06[diff] [blame]40 const char *trace;
41
Karsten Blees6aa30852014-07-12 00:00:06[diff] [blame]42 /* don't open twice */
43 if (key->initialized)
44 return key->fd;
45
Jonathan Tan7167a622020-05-11 17:43:10[diff] [blame]46 trace = override_envvar ? override_envvar : getenv(key->key);
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]47
Christian Couder6844fc82006-10-14 14:05:25[diff] [blame]48 if (!trace || !strcmp(trace, "") ||
49 !strcmp(trace, "0") || !strcasecmp(trace, "false"))
Karsten Blees6aa30852014-07-12 00:00:06[diff] [blame]50 key->fd = 0;
51 else if (!strcmp(trace, "1") || !strcasecmp(trace, "true"))
52 key->fd = STDERR_FILENO;
53 else if (strlen(trace) == 1 && isdigit(*trace))
54 key->fd = atoi(trace);
55 else if (is_absolute_path(trace)) {
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]56 int fd = open(trace, O_WRONLY | O_APPEND | O_CREAT, 0666);
57 if (fd == -1) {
Jeff King6f253052016-08-05 07:58:38[diff] [blame]58 warning("could not open '%s' for tracing: %s",
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]59 trace, strerror(errno));
Jeff King6f253052016-08-05 07:58:38[diff] [blame]60 trace_disable(key);
Karsten Blees6aa30852014-07-12 00:00:06[diff] [blame]61 } else {
62 key->fd = fd;
63 key->need_close = 1;
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]64 }
Karsten Blees6aa30852014-07-12 00:00:06[diff] [blame]65 } else {
Jeff Kingb3a1c5d2016-08-03 23:00:23[diff] [blame]66 warning("unknown trace value for '%s': %s\n"
67 " If you want to trace into a file, then please set %s\n"
Jeff King6f253052016-08-05 07:58:38[diff] [blame]68 " to an absolute pathname (starting with /)",
Jeff Kingb3a1c5d2016-08-03 23:00:23[diff] [blame]69 key->key, trace, key->key);
Jeff King6f253052016-08-05 07:58:38[diff] [blame]70 trace_disable(key);
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]71 }
72
Karsten Blees6aa30852014-07-12 00:00:06[diff] [blame]73 key->initialized = 1;
74 return key->fd;
75}
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]76
Jonathan Tan7167a622020-05-11 17:43:10[diff] [blame]77void trace_override_envvar(struct trace_key *key, const char *value)
78{
79 trace_disable(key);
80 key->initialized = 0;
81
82 /*
83 * Invoke get_trace_fd() to initialize key using the given value
84 * instead of the value of the environment variable.
85 */
86 get_trace_fd(key, value);
87}
88
Karsten Blees6aa30852014-07-12 00:00:06[diff] [blame]89void trace_disable(struct trace_key *key)
90{
91 if (key->need_close)
92 close(key->fd);
93 key->fd = 0;
94 key->initialized = 1;
95 key->need_close = 0;
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]96}
97
Karsten Bleese05bed92014-07-12 00:05:03[diff] [blame]98static int prepare_trace_line(const char *file, int line,
99 struct trace_key *key, struct strbuf *buf)
Karsten Bleesc69dfd22014-07-12 00:02:18[diff] [blame]100{
Karsten Blees124647c2014-07-12 00:03:01[diff] [blame]101 static struct trace_key trace_bare = TRACE_KEY_INIT(BARE);
Karsten Bleesb72be022014-07-12 00:03:50[diff] [blame]102 struct timeval tv;
103 struct tm tm;
104 time_t secs;
Karsten Blees124647c2014-07-12 00:03:01[diff] [blame]105
Karsten Bleesc69dfd22014-07-12 00:02:18[diff] [blame]106 if (!trace_want(key))
107 return 0;
108
Karsten Blees124647c2014-07-12 00:03:01[diff] [blame]109 /* unit tests may want to disable additional trace output */
110 if (trace_want(&trace_bare))
111 return 1;
112
Karsten Bleesb72be022014-07-12 00:03:50[diff] [blame]113 /* print current timestamp */
114 gettimeofday(&tv, NULL);
115 secs = tv.tv_sec;
116 localtime_r(&secs, &tm);
Ævar Arnfjörð Bjarmason56a29d22022-02-21 16:05:27[diff] [blame]117 strbuf_addf(buf, "%02d:%02d:%02d.%06ld %s:%d", tm.tm_hour, tm.tm_min,
118 tm.tm_sec, (long) tv.tv_usec, file, line);
Karsten Bleese05bed92014-07-12 00:05:03[diff] [blame]119 /* align trace output (column 40 catches most files names in git) */
120 while (buf->len < 40)
121 strbuf_addch(buf, ' ');
Karsten Bleese05bed92014-07-12 00:05:03[diff] [blame]122
Karsten Bleesc69dfd22014-07-12 00:02:18[diff] [blame]123 return 1;
124}
125
Jeff Kingc0222e72016-08-03 22:58:00[diff] [blame]126static void trace_write(struct trace_key *key, const void *buf, unsigned len)
127{
Jonathan Tan7167a622020-05-11 17:43:10[diff] [blame]128 if (write_in_full(get_trace_fd(key, NULL), buf, len) < 0) {
Jeff King3b0c3ab2016-08-03 23:00:32[diff] [blame]129 warning("unable to write trace for %s: %s",
130 key->key, strerror(errno));
Jeff King46ac74b2016-08-03 23:01:04[diff] [blame]131 trace_disable(key);
Jeff King3b0c3ab2016-08-03 23:00:32[diff] [blame]132 }
Jeff Kingc0222e72016-08-03 22:58:00[diff] [blame]133}
134
Jeff King32359832015-06-16 17:23:20[diff] [blame]135void trace_verbatim(struct trace_key *key, const void *buf, unsigned len)
136{
137 if (!trace_want(key))
138 return;
Jeff Kingc0222e72016-08-03 22:58:00[diff] [blame]139 trace_write(key, buf, len);
Jeff King32359832015-06-16 17:23:20[diff] [blame]140}
141
Karsten Bleesc69dfd22014-07-12 00:02:18[diff] [blame]142static void print_trace_line(struct trace_key *key, struct strbuf *buf)
143{
René Scharfea0d49232014-12-12 19:16:38[diff] [blame]144 strbuf_complete_line(buf);
Jeff Kingc0222e72016-08-03 22:58:00[diff] [blame]145 trace_write(key, buf->buf, buf->len);
Karsten Bleesc69dfd22014-07-12 00:02:18[diff] [blame]146}
147
Karsten Bleese05bed92014-07-12 00:05:03[diff] [blame]148static void trace_vprintf_fl(const char *file, int line, struct trace_key *key,
149 const char *format, va_list ap)
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]150{
Jeff Kingebeb6092011-02-26 05:08:53[diff] [blame]151 struct strbuf buf = STRBUF_INIT;
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]152
Karsten Bleese05bed92014-07-12 00:05:03[diff] [blame]153 if (!prepare_trace_line(file, line, key, &buf))
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]154 return;
155
Karsten Blees4a3b0b22014-06-11 07:57:23[diff] [blame]156 strbuf_vaddf(&buf, format, ap);
Karsten Bleesc69dfd22014-07-12 00:02:18[diff] [blame]157 print_trace_line(key, &buf);
Nguyễn Thái Ngọc Duy33011e72018-01-15 10:59:45[diff] [blame]158 strbuf_release(&buf);
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]159}
160
Karsten Bleese05bed92014-07-12 00:05:03[diff] [blame]161static void trace_argv_vprintf_fl(const char *file, int line,
162 const char **argv, const char *format,
163 va_list ap)
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]164{
Jeff Kingebeb6092011-02-26 05:08:53[diff] [blame]165 struct strbuf buf = STRBUF_INIT;
Karsten Bleesc69dfd22014-07-12 00:02:18[diff] [blame]166
Gennady Kupava406102a2017-11-26 20:11:18[diff] [blame]167 if (!prepare_trace_line(file, line, &trace_default_key, &buf))
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]168 return;
169
Karsten Blees4a3b0b22014-06-11 07:57:23[diff] [blame]170 strbuf_vaddf(&buf, format, ap);
Pierre Habouzit19247e52007-09-20 08:43:11[diff] [blame]171
Jeff King1fbdab22018-01-15 10:59:44[diff] [blame]172 sq_quote_argv_pretty(&buf, argv);
Gennady Kupava406102a2017-11-26 20:11:18[diff] [blame]173 print_trace_line(&trace_default_key, &buf);
Nguyễn Thái Ngọc Duy33011e72018-01-15 10:59:45[diff] [blame]174 strbuf_release(&buf);
Christian Couder6ce4e612006-09-02 16:23:48[diff] [blame]175}
Nguyễn Thái Ngọc Duya9ca8a82010-11-26 15:31:57[diff] [blame]176
Karsten Bleese05bed92014-07-12 00:05:03[diff] [blame]177void trace_strbuf_fl(const char *file, int line, struct trace_key *key,
178 const struct strbuf *data)
Karsten Blees66f66c52014-07-12 00:04:29[diff] [blame]179{
180 struct strbuf buf = STRBUF_INIT;
181
Karsten Bleese05bed92014-07-12 00:05:03[diff] [blame]182 if (!prepare_trace_line(file, line, key, &buf))
Karsten Blees66f66c52014-07-12 00:04:29[diff] [blame]183 return;
184
185 strbuf_addbuf(&buf, data);
186 print_trace_line(key, &buf);
Nguyễn Thái Ngọc Duy33011e72018-01-15 10:59:45[diff] [blame]187 strbuf_release(&buf);
Karsten Blees66f66c52014-07-12 00:04:29[diff] [blame]188}
189
Nguyễn Thái Ngọc Duyc46c4062018-08-18 14:41:22[diff] [blame]190static uint64_t perf_start_times[10];
191static int perf_indent;
192
193uint64_t trace_performance_enter(void)
194{
195 uint64_t now;
196
197 if (!trace_want(&trace_perf_key))
198 return 0;
199
200 now = getnanotime();
201 perf_start_times[perf_indent] = now;
202 if (perf_indent + 1 < ARRAY_SIZE(perf_start_times))
203 perf_indent++;
204 else
205 BUG("Too deep indentation");
206 return now;
207}
208
Karsten Blees09b2c1c2014-07-12 00:06:28[diff] [blame]209static void trace_performance_vprintf_fl(const char *file, int line,
210 uint64_t nanos, const char *format,
211 va_list ap)
212{
Nguyễn Thái Ngọc Duyc46c4062018-08-18 14:41:22[diff] [blame]213 static const char space[] = " ";
Karsten Blees09b2c1c2014-07-12 00:06:28[diff] [blame]214 struct strbuf buf = STRBUF_INIT;
215
216 if (!prepare_trace_line(file, line, &trace_perf_key, &buf))
217 return;
218
219 strbuf_addf(&buf, "performance: %.9f s", (double) nanos / 1000000000);
220
221 if (format && *format) {
Nguyễn Thái Ngọc Duyc46c4062018-08-18 14:41:22[diff] [blame]222 if (perf_indent >= strlen(space))
223 BUG("Too deep indentation");
224
225 strbuf_addf(&buf, ":%.*s ", perf_indent, space);
Karsten Blees09b2c1c2014-07-12 00:06:28[diff] [blame]226 strbuf_vaddf(&buf, format, ap);
227 }
228
229 print_trace_line(&trace_perf_key, &buf);
Nguyễn Thái Ngọc Duy33011e72018-01-15 10:59:45[diff] [blame]230 strbuf_release(&buf);
Karsten Blees09b2c1c2014-07-12 00:06:28[diff] [blame]231}
232
Karsten Bleese05bed92014-07-12 00:05:03[diff] [blame]233void trace_printf_key_fl(const char *file, int line, struct trace_key *key,
234 const char *format, ...)
235{
236 va_list ap;
237 va_start(ap, format);
238 trace_vprintf_fl(file, line, key, format, ap);
239 va_end(ap);
240}
241
242void trace_argv_printf_fl(const char *file, int line, const char **argv,
243 const char *format, ...)
244{
245 va_list ap;
246 va_start(ap, format);
247 trace_argv_vprintf_fl(file, line, argv, format, ap);
248 va_end(ap);
249}
250
Karsten Blees09b2c1c2014-07-12 00:06:28[diff] [blame]251void trace_performance_fl(const char *file, int line, uint64_t nanos,
252 const char *format, ...)
253{
254 va_list ap;
255 va_start(ap, format);
256 trace_performance_vprintf_fl(file, line, nanos, format, ap);
257 va_end(ap);
258}
259
Nguyễn Thái Ngọc Duyc46c4062018-08-18 14:41:22[diff] [blame]260void trace_performance_leave_fl(const char *file, int line,
261 uint64_t nanos, const char *format, ...)
262{
263 va_list ap;
264 uint64_t since;
265
266 if (perf_indent)
267 perf_indent--;
268
269 if (!format) /* Allow callers to leave without tracing anything */
270 return;
271
272 since = perf_start_times[perf_indent];
273 va_start(ap, format);
274 trace_performance_vprintf_fl(file, line, nanos - since, format, ap);
275 va_end(ap);
276}
277
Nguyễn Thái Ngọc Duya9ca8a82010-11-26 15:31:57[diff] [blame]278static const char *quote_crnl(const char *path)
279{
Jeff King0bb443f2015-09-24 21:05:54[diff] [blame]280 static struct strbuf new_path = STRBUF_INIT;
Nguyễn Thái Ngọc Duya9ca8a82010-11-26 15:31:57[diff] [blame]281
282 if (!path)
283 return NULL;
284
Jeff King0bb443f2015-09-24 21:05:54[diff] [blame]285 strbuf_reset(&new_path);
286
287 while (*path) {
288 switch (*path) {
289 case '\\': strbuf_addstr(&new_path, "\\\\"); break;
290 case '\n': strbuf_addstr(&new_path, "\\n"); break;
291 case '\r': strbuf_addstr(&new_path, "\\r"); break;
Nguyễn Thái Ngọc Duya9ca8a82010-11-26 15:31:57[diff] [blame]292 default:
Jeff King0bb443f2015-09-24 21:05:54[diff] [blame]293 strbuf_addch(&new_path, *path);
Nguyễn Thái Ngọc Duya9ca8a82010-11-26 15:31:57[diff] [blame]294 }
Jeff King0bb443f2015-09-24 21:05:54[diff] [blame]295 path++;
Nguyễn Thái Ngọc Duya9ca8a82010-11-26 15:31:57[diff] [blame]296 }
Jeff King0bb443f2015-09-24 21:05:54[diff] [blame]297 return new_path.buf;
Nguyễn Thái Ngọc Duya9ca8a82010-11-26 15:31:57[diff] [blame]298}
299
Patrick Steinhardtbd0c0fb2024-12-17 06:43:50[diff] [blame]300void trace_repo_setup(struct repository *r)
Nguyễn Thái Ngọc Duya9ca8a82010-11-26 15:31:57[diff] [blame]301{
idriss fekir17ab64e2023-02-19 00:25:27[diff] [blame]302 const char *git_work_tree, *prefix = startup_info->prefix;
René Scharfe56b9f6e2014-07-28 18:30:39[diff] [blame]303 char *cwd;
Nguyễn Thái Ngọc Duya9ca8a82010-11-26 15:31:57[diff] [blame]304
Nguyễn Thái Ngọc Duycb507612018-03-30 18:34:59[diff] [blame]305 if (!trace_want(&trace_setup_key))
Nguyễn Thái Ngọc Duya9ca8a82010-11-26 15:31:57[diff] [blame]306 return;
307
René Scharfe56b9f6e2014-07-28 18:30:39[diff] [blame]308 cwd = xgetcwd();
Nguyễn Thái Ngọc Duya9ca8a82010-11-26 15:31:57[diff] [blame]309
Patrick Steinhardtbd0c0fb2024-12-17 06:43:50[diff] [blame]310 if (!(git_work_tree = repo_get_work_tree(r)))
Brandon Caseye83c2672011-01-06 00:30:01[diff] [blame]311 git_work_tree = "(null)";
312
idriss fekir17ab64e2023-02-19 00:25:27[diff] [blame]313 if (!startup_info->prefix)
Brandon Caseye83c2672011-01-06 00:30:01[diff] [blame]314 prefix = "(null)";
315
Patrick Steinhardtbd0c0fb2024-12-17 06:43:50[diff] [blame]316 trace_printf_key(&trace_setup_key, "setup: git_dir: %s\n", quote_crnl(repo_get_git_dir(r)));
317 trace_printf_key(&trace_setup_key, "setup: git_common_dir: %s\n", quote_crnl(repo_get_common_dir(r)));
Nguyễn Thái Ngọc Duycb507612018-03-30 18:34:59[diff] [blame]318 trace_printf_key(&trace_setup_key, "setup: worktree: %s\n", quote_crnl(git_work_tree));
319 trace_printf_key(&trace_setup_key, "setup: cwd: %s\n", quote_crnl(cwd));
320 trace_printf_key(&trace_setup_key, "setup: prefix: %s\n", quote_crnl(prefix));
René Scharfe56b9f6e2014-07-28 18:30:39[diff] [blame]321
322 free(cwd);
Nguyễn Thái Ngọc Duya9ca8a82010-11-26 15:31:57[diff] [blame]323}
Jeff King39bc5e42011-02-24 14:28:59[diff] [blame]324
Karsten Blees6aa30852014-07-12 00:00:06[diff] [blame]325int trace_want(struct trace_key *key)
Jeff King39bc5e42011-02-24 14:28:59[diff] [blame]326{
Jonathan Tan7167a622020-05-11 17:43:10[diff] [blame]327 return !!get_trace_fd(key, NULL);
Jeff King39bc5e42011-02-24 14:28:59[diff] [blame]328}
Karsten Blees148d6772014-07-12 00:05:42[diff] [blame]329
Reuben Hawkinsa6c3c632015-01-08 20:00:56[diff] [blame]330#if defined(HAVE_CLOCK_GETTIME) && defined(HAVE_CLOCK_MONOTONIC)
Karsten Blees148d6772014-07-12 00:05:42[diff] [blame]331
332static inline uint64_t highres_nanos(void)
333{
334 struct timespec ts;
335 if (clock_gettime(CLOCK_MONOTONIC, &ts))
336 return 0;
337 return (uint64_t) ts.tv_sec * 1000000000 + ts.tv_nsec;
338}
339
340#elif defined (GIT_WINDOWS_NATIVE)
341
342static inline uint64_t highres_nanos(void)
343{
344 static uint64_t high_ns, scaled_low_ns;
345 static int scale;
346 LARGE_INTEGER cnt;
347
348 if (!scale) {
349 if (!QueryPerformanceFrequency(&cnt))
350 return 0;
351
352 /* high_ns = number of ns per cnt.HighPart */
353 high_ns = (1000000000LL << 32) / (uint64_t) cnt.QuadPart;
354
355 /*
356 * Number of ns per cnt.LowPart is 10^9 / frequency (or
357 * high_ns >> 32). For maximum precision, we scale this factor
358 * so that it just fits within 32 bit (i.e. won't overflow if
359 * multiplied with cnt.LowPart).
360 */
361 scaled_low_ns = high_ns;
362 scale = 32;
363 while (scaled_low_ns >= 0x100000000LL) {
364 scaled_low_ns >>= 1;
365 scale--;
366 }
367 }
368
369 /* if QPF worked on initialization, we expect QPC to work as well */
370 QueryPerformanceCounter(&cnt);
371
372 return (high_ns * cnt.HighPart) +
373 ((scaled_low_ns * cnt.LowPart) >> scale);
374}
375
376#else
377# define highres_nanos() 0
378#endif
379
380static inline uint64_t gettimeofday_nanos(void)
381{
382 struct timeval tv;
383 gettimeofday(&tv, NULL);
384 return (uint64_t) tv.tv_sec * 1000000000 + tv.tv_usec * 1000;
385}
386
387/*
388 * Returns nanoseconds since the epoch (01/01/1970), for performance tracing
389 * (i.e. favoring high precision over wall clock time accuracy).
390 */
Ben Walton6433d562014-09-28 07:50:26[diff] [blame]391uint64_t getnanotime(void)
Karsten Blees148d6772014-07-12 00:05:42[diff] [blame]392{
393 static uint64_t offset;
394 if (offset > 1) {
395 /* initialization succeeded, return offset + high res time */
396 return offset + highres_nanos();
397 } else if (offset == 1) {
398 /* initialization failed, fall back to gettimeofday */
399 return gettimeofday_nanos();
400 } else {
401 /* initialize offset if high resolution timer works */
402 uint64_t now = gettimeofday_nanos();
403 uint64_t highres = highres_nanos();
404 if (highres)
405 offset = now - highres;
406 else
407 offset = 1;
408 return now;
409 }
410}
Karsten Blees578da032014-07-12 00:07:01[diff] [blame]411
Karsten Blees578da032014-07-12 00:07:01[diff] [blame]412static struct strbuf command_line = STRBUF_INIT;
413
414static void print_command_performance_atexit(void)
415{
Nguyễn Thái Ngọc Duyc46c4062018-08-18 14:41:22[diff] [blame]416 trace_performance_leave("git command:%s", command_line.buf);
Karsten Blees578da032014-07-12 00:07:01[diff] [blame]417}
418
419void trace_command_performance(const char **argv)
420{
421 if (!trace_want(&trace_perf_key))
422 return;
423
Nguyễn Thái Ngọc Duyc46c4062018-08-18 14:41:22[diff] [blame]424 if (!command_line.len)
Karsten Blees578da032014-07-12 00:07:01[diff] [blame]425 atexit(print_command_performance_atexit);
426
427 strbuf_reset(&command_line);
Jeff King1fbdab22018-01-15 10:59:44[diff] [blame]428 sq_quote_argv_pretty(&command_line, argv);
Nguyễn Thái Ngọc Duyc46c4062018-08-18 14:41:22[diff] [blame]429 trace_performance_enter();
Karsten Blees578da032014-07-12 00:07:01[diff] [blame]430}