trace2.c

   1 #include "cache.h"
   2 #include "config.h"
   3 #include "json-writer.h"
   4 #include "quote.h"
   5 #include "run-command.h"
   6 #include "sigchain.h"
   7 #include "thread-utils.h"
   8 #include "version.h"
   9 #include "trace2/tr2_cfg.h"
  10 #include "trace2/tr2_cmd_name.h"
  11 #include "trace2/tr2_dst.h"
  12 #include "trace2/tr2_sid.h"
  13 #include "trace2/tr2_sysenv.h"
  14 #include "trace2/tr2_tgt.h"
  15 #include "trace2/tr2_tls.h"
  16
  17 static int trace2_enabled;
  18
  19 static int tr2_next_child_id; /* modify under lock */
  20 static int tr2_next_exec_id; /* modify under lock */
  21 static int tr2_next_repo_id = 1; /* modify under lock. zero is reserved */
  22
  23 /*
  24  * A table of the builtin TRACE2 targets.  Each of these may be independently
  25  * enabled or disabled.  Each TRACE2 API method will try to write an event to
  26  * *each* of the enabled targets.
  27  */
  28 /* clang-format off */
  29 static struct tr2_tgt *tr2_tgt_builtins[] =
  30 {
  31         &tr2_tgt_normal,
  32         &tr2_tgt_perf,
  33         &tr2_tgt_event,
  34         NULL
  35 };
  36 /* clang-format on */
  37
  38 /* clang-format off */
  39 #define for_each_builtin(j, tgt_j)                      \
  40         for (j = 0, tgt_j = tr2_tgt_builtins[j];        \
  41              tgt_j;                                     \
  42              j++, tgt_j = tr2_tgt_builtins[j])
  43 /* clang-format on */
  44
  45 /* clang-format off */
  46 #define for_each_wanted_builtin(j, tgt_j)            \
  47         for_each_builtin(j, tgt_j)                   \
  48                 if (tr2_dst_trace_want(tgt_j->pdst))
  49 /* clang-format on */
  50
  51 /*
  52  * Force (rather than lazily) initialize any of the requested
  53  * builtin TRACE2 targets at startup (and before we've seen an
  54  * actual TRACE2 event call) so we can see if we need to setup
  55  * private data structures and thread-local storage.
  56  *
  57  * Return the number of builtin targets enabled.
  58  */
  59 static int tr2_tgt_want_builtins(void)
  60 {
  61         struct tr2_tgt *tgt_j;
  62         int j;
  63         int sum = 0;
  64
  65         for_each_builtin (j, tgt_j)
  66                 if (tgt_j->pfn_init())
  67                         sum++;
  68
  69         return sum;
  70 }
  71
  72 /*
  73  * Properly terminate each builtin target.  Give each target
  74  * a chance to write a summary event and/or flush if necessary
  75  * and then close the fd.
  76  */
  77 static void tr2_tgt_disable_builtins(void)
  78 {
  79         struct tr2_tgt *tgt_j;
  80         int j;
  81
  82         for_each_builtin (j, tgt_j)
  83                 tgt_j->pfn_term();
  84 }
  85
  86 static int tr2main_exit_code;
  87
  88 /*
  89  * Our atexit routine should run after everything has finished.
  90  *
  91  * Note that events generated here might not actually appear if
  92  * we are writing to fd 1 or 2 and our atexit routine runs after
  93  * the pager's atexit routine (since it closes them to shutdown
  94  * the pipes).
  95  */
  96 static void tr2main_atexit_handler(void)
  97 {
  98         struct tr2_tgt *tgt_j;
  99         int j;
 100         uint64_t us_now;
 101         uint64_t us_elapsed_absolute;
 102
 103         us_now = getnanotime() / 1000;
 104         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 105
 106         /*
 107          * Clear any unbalanced regions so that our atexit message
 108          * does not appear nested.  This improves the appearance of
 109          * the trace output if someone calls die(), for example.
 110          */
 111         tr2tls_pop_unwind_self();
 112
 113         for_each_wanted_builtin (j, tgt_j)
 114                 if (tgt_j->pfn_atexit)
 115                         tgt_j->pfn_atexit(us_elapsed_absolute,
 116                                           tr2main_exit_code);
 117
 118         tr2_tgt_disable_builtins();
 119
 120         tr2tls_release();
 121         tr2_sid_release();
 122         tr2_cmd_name_release();
 123         tr2_cfg_free_patterns();
 124         tr2_cfg_free_env_vars();
 125         tr2_sysenv_release();
 126
 127         trace2_enabled = 0;
 128 }
 129
 130 static void tr2main_signal_handler(int signo)
 131 {
 132         struct tr2_tgt *tgt_j;
 133         int j;
 134         uint64_t us_now;
 135         uint64_t us_elapsed_absolute;
 136
 137         us_now = getnanotime() / 1000;
 138         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 139
 140         for_each_wanted_builtin (j, tgt_j)
 141                 if (tgt_j->pfn_signal)
 142                         tgt_j->pfn_signal(us_elapsed_absolute, signo);
 143
 144         sigchain_pop(signo);
 145         raise(signo);
 146 }
 147
 148 void trace2_initialize_clock(void)
 149 {
 150         tr2tls_start_process_clock();
 151 }
 152
 153 void trace2_initialize_fl(const char *file, int line)
 154 {
 155         struct tr2_tgt *tgt_j;
 156         int j;
 157
 158         if (trace2_enabled)
 159                 return;
 160
 161         tr2_sysenv_load();
 162
 163         if (!tr2_tgt_want_builtins())
 164                 return;
 165         trace2_enabled = 1;
 166
 167         tr2_sid_get();
 168
 169         atexit(tr2main_atexit_handler);
 170         sigchain_push(SIGPIPE, tr2main_signal_handler);
 171         tr2tls_init();
 172
 173         /*
 174          * Emit 'version' message on each active builtin target.
 175          */
 176         for_each_wanted_builtin (j, tgt_j)
 177                 if (tgt_j->pfn_version_fl)
 178                         tgt_j->pfn_version_fl(file, line);
 179 }
 180
 181 int trace2_is_enabled(void)
 182 {
 183         return trace2_enabled;
 184 }
 185
 186 void trace2_cmd_start_fl(const char *file, int line, const char **argv)
 187 {
 188         struct tr2_tgt *tgt_j;
 189         int j;
 190         uint64_t us_now;
 191         uint64_t us_elapsed_absolute;
 192
 193         if (!trace2_enabled)
 194                 return;
 195
 196         us_now = getnanotime() / 1000;
 197         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 198
 199         for_each_wanted_builtin (j, tgt_j)
 200                 if (tgt_j->pfn_start_fl)
 201                         tgt_j->pfn_start_fl(file, line, us_elapsed_absolute,
 202                                             argv);
 203 }
 204
 205 void trace2_cmd_exit_fl(const char *file, int line, int code)
 206 {
 207         struct tr2_tgt *tgt_j;
 208         int j;
 209         uint64_t us_now;
 210         uint64_t us_elapsed_absolute;
 211
 212         if (!trace2_enabled)
 213                 return;
 214
 215         trace_git_fsync_stats();
 216         trace2_collect_process_info(TRACE2_PROCESS_INFO_EXIT);
 217
 218         tr2main_exit_code = code;
 219
 220         us_now = getnanotime() / 1000;
 221         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 222
 223         for_each_wanted_builtin (j, tgt_j)
 224                 if (tgt_j->pfn_exit_fl)
 225                         tgt_j->pfn_exit_fl(file, line, us_elapsed_absolute,
 226                                            code);
 227 }
 228
 229 void trace2_cmd_error_va_fl(const char *file, int line, const char *fmt,
 230                             va_list ap)
 231 {
 232         struct tr2_tgt *tgt_j;
 233         int j;
 234
 235         if (!trace2_enabled)
 236                 return;
 237
 238         /*
 239          * We expect each target function to treat 'ap' as constant
 240          * and use va_copy (because an 'ap' can only be walked once).
 241          */
 242         for_each_wanted_builtin (j, tgt_j)
 243                 if (tgt_j->pfn_error_va_fl)
 244                         tgt_j->pfn_error_va_fl(file, line, fmt, ap);
 245 }
 246
 247 void trace2_cmd_path_fl(const char *file, int line, const char *pathname)
 248 {
 249         struct tr2_tgt *tgt_j;
 250         int j;
 251
 252         if (!trace2_enabled)
 253                 return;
 254
 255         for_each_wanted_builtin (j, tgt_j)
 256                 if (tgt_j->pfn_command_path_fl)
 257                         tgt_j->pfn_command_path_fl(file, line, pathname);
 258 }
 259
 260 void trace2_cmd_ancestry_fl(const char *file, int line, const char **parent_names)
 261 {
 262         struct tr2_tgt *tgt_j;
 263         int j;
 264
 265         if (!trace2_enabled)
 266                 return;
 267
 268         for_each_wanted_builtin (j, tgt_j)
 269                 if (tgt_j->pfn_command_ancestry_fl)
 270                         tgt_j->pfn_command_ancestry_fl(file, line, parent_names);
 271 }
 272
 273 void trace2_cmd_name_fl(const char *file, int line, const char *name)
 274 {
 275         struct tr2_tgt *tgt_j;
 276         const char *hierarchy;
 277         int j;
 278
 279         if (!trace2_enabled)
 280                 return;
 281
 282         tr2_cmd_name_append_hierarchy(name);
 283         hierarchy = tr2_cmd_name_get_hierarchy();
 284
 285         for_each_wanted_builtin (j, tgt_j)
 286                 if (tgt_j->pfn_command_name_fl)
 287                         tgt_j->pfn_command_name_fl(file, line, name, hierarchy);
 288 }
 289
 290 void trace2_cmd_mode_fl(const char *file, int line, const char *mode)
 291 {
 292         struct tr2_tgt *tgt_j;
 293         int j;
 294
 295         if (!trace2_enabled)
 296                 return;
 297
 298         for_each_wanted_builtin (j, tgt_j)
 299                 if (tgt_j->pfn_command_mode_fl)
 300                         tgt_j->pfn_command_mode_fl(file, line, mode);
 301 }
 302
 303 void trace2_cmd_alias_fl(const char *file, int line, const char *alias,
 304                          const char **argv)
 305 {
 306         struct tr2_tgt *tgt_j;
 307         int j;
 308
 309         if (!trace2_enabled)
 310                 return;
 311
 312         for_each_wanted_builtin (j, tgt_j)
 313                 if (tgt_j->pfn_alias_fl)
 314                         tgt_j->pfn_alias_fl(file, line, alias, argv);
 315 }
 316
 317 void trace2_cmd_list_config_fl(const char *file, int line)
 318 {
 319         if (!trace2_enabled)
 320                 return;
 321
 322         tr2_cfg_list_config_fl(file, line);
 323 }
 324
 325 void trace2_cmd_list_env_vars_fl(const char *file, int line)
 326 {
 327         if (!trace2_enabled)
 328                 return;
 329
 330         tr2_list_env_vars_fl(file, line);
 331 }
 332
 333 void trace2_cmd_set_config_fl(const char *file, int line, const char *key,
 334                               const char *value)
 335 {
 336         if (!trace2_enabled)
 337                 return;
 338
 339         tr2_cfg_set_fl(file, line, key, value);
 340 }
 341
 342 void trace2_child_start_fl(const char *file, int line,
 343                            struct child_process *cmd)
 344 {
 345         struct tr2_tgt *tgt_j;
 346         int j;
 347         uint64_t us_now;
 348         uint64_t us_elapsed_absolute;
 349
 350         if (!trace2_enabled)
 351                 return;
 352
 353         us_now = getnanotime() / 1000;
 354         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 355
 356         cmd->trace2_child_id = tr2tls_locked_increment(&tr2_next_child_id);
 357         cmd->trace2_child_us_start = us_now;
 358
 359         for_each_wanted_builtin (j, tgt_j)
 360                 if (tgt_j->pfn_child_start_fl)
 361                         tgt_j->pfn_child_start_fl(file, line,
 362                                                   us_elapsed_absolute, cmd);
 363 }
 364
 365 void trace2_child_exit_fl(const char *file, int line, struct child_process *cmd,
 366                           int child_exit_code)
 367 {
 368         struct tr2_tgt *tgt_j;
 369         int j;
 370         uint64_t us_now;
 371         uint64_t us_elapsed_absolute;
 372         uint64_t us_elapsed_child;
 373
 374         if (!trace2_enabled)
 375                 return;
 376
 377         us_now = getnanotime() / 1000;
 378         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 379
 380         if (cmd->trace2_child_us_start)
 381                 us_elapsed_child = us_now - cmd->trace2_child_us_start;
 382         else
 383                 us_elapsed_child = 0;
 384
 385         for_each_wanted_builtin (j, tgt_j)
 386                 if (tgt_j->pfn_child_exit_fl)
 387                         tgt_j->pfn_child_exit_fl(file, line,
 388                                                  us_elapsed_absolute,
 389                                                  cmd->trace2_child_id, cmd->pid,
 390                                                  child_exit_code,
 391                                                  us_elapsed_child);
 392 }
 393
 394 void trace2_child_ready_fl(const char *file, int line,
 395                            struct child_process *cmd,
 396                            const char *ready)
 397 {
 398         struct tr2_tgt *tgt_j;
 399         int j;
 400         uint64_t us_now;
 401         uint64_t us_elapsed_absolute;
 402         uint64_t us_elapsed_child;
 403
 404         if (!trace2_enabled)
 405                 return;
 406
 407         us_now = getnanotime() / 1000;
 408         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 409
 410         if (cmd->trace2_child_us_start)
 411                 us_elapsed_child = us_now - cmd->trace2_child_us_start;
 412         else
 413                 us_elapsed_child = 0;
 414
 415         for_each_wanted_builtin (j, tgt_j)
 416                 if (tgt_j->pfn_child_ready_fl)
 417                         tgt_j->pfn_child_ready_fl(file, line,
 418                                                   us_elapsed_absolute,
 419                                                   cmd->trace2_child_id,
 420                                                   cmd->pid,
 421                                                   ready,
 422                                                   us_elapsed_child);
 423 }
 424
 425 int trace2_exec_fl(const char *file, int line, const char *exe,
 426                    const char **argv)
 427 {
 428         struct tr2_tgt *tgt_j;
 429         int j;
 430         int exec_id;
 431         uint64_t us_now;
 432         uint64_t us_elapsed_absolute;
 433
 434         if (!trace2_enabled)
 435                 return -1;
 436
 437         us_now = getnanotime() / 1000;
 438         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 439
 440         exec_id = tr2tls_locked_increment(&tr2_next_exec_id);
 441
 442         for_each_wanted_builtin (j, tgt_j)
 443                 if (tgt_j->pfn_exec_fl)
 444                         tgt_j->pfn_exec_fl(file, line, us_elapsed_absolute,
 445                                            exec_id, exe, argv);
 446
 447         return exec_id;
 448 }
 449
 450 void trace2_exec_result_fl(const char *file, int line, int exec_id, int code)
 451 {
 452         struct tr2_tgt *tgt_j;
 453         int j;
 454         uint64_t us_now;
 455         uint64_t us_elapsed_absolute;
 456
 457         if (!trace2_enabled)
 458                 return;
 459
 460         us_now = getnanotime() / 1000;
 461         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 462
 463         for_each_wanted_builtin (j, tgt_j)
 464                 if (tgt_j->pfn_exec_result_fl)
 465                         tgt_j->pfn_exec_result_fl(
 466                                 file, line, us_elapsed_absolute, exec_id, code);
 467 }
 468
 469 void trace2_thread_start_fl(const char *file, int line, const char *thread_name)
 470 {
 471         struct tr2_tgt *tgt_j;
 472         int j;
 473         uint64_t us_now;
 474         uint64_t us_elapsed_absolute;
 475
 476         if (!trace2_enabled)
 477                 return;
 478
 479         if (tr2tls_is_main_thread()) {
 480                 /*
 481                  * We should only be called from the new thread's thread-proc,
 482                  * so this is technically a bug.  But in those cases where the
 483                  * main thread also runs the thread-proc function (or when we
 484                  * are built with threading disabled), we need to allow it.
 485                  *
 486                  * Convert this call to a region-enter so the nesting looks
 487                  * correct.
 488                  */
 489                 trace2_region_enter_printf_fl(file, line, NULL, NULL, NULL,
 490                                               "thread-proc on main: %s",
 491                                               thread_name);
 492                 return;
 493         }
 494
 495         us_now = getnanotime() / 1000;
 496         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 497
 498         tr2tls_create_self(thread_name, us_now);
 499
 500         for_each_wanted_builtin (j, tgt_j)
 501                 if (tgt_j->pfn_thread_start_fl)
 502                         tgt_j->pfn_thread_start_fl(file, line,
 503                                                    us_elapsed_absolute);
 504 }
 505
 506 void trace2_thread_exit_fl(const char *file, int line)
 507 {
 508         struct tr2_tgt *tgt_j;
 509         int j;
 510         uint64_t us_now;
 511         uint64_t us_elapsed_absolute;
 512         uint64_t us_elapsed_thread;
 513
 514         if (!trace2_enabled)
 515                 return;
 516
 517         if (tr2tls_is_main_thread()) {
 518                 /*
 519                  * We should only be called from the exiting thread's
 520                  * thread-proc, so this is technically a bug.  But in
 521                  * those cases where the main thread also runs the
 522                  * thread-proc function (or when we are built with
 523                  * threading disabled), we need to allow it.
 524                  *
 525                  * Convert this call to a region-leave so the nesting
 526                  * looks correct.
 527                  */
 528                 trace2_region_leave_printf_fl(file, line, NULL, NULL, NULL,
 529                                               "thread-proc on main");
 530                 return;
 531         }
 532
 533         us_now = getnanotime() / 1000;
 534         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 535
 536         /*
 537          * Clear any unbalanced regions and then get the relative time
 538          * for the outer-most region (which we pushed when the thread
 539          * started).  This gives us the run time of the thread.
 540          */
 541         tr2tls_pop_unwind_self();
 542         us_elapsed_thread = tr2tls_region_elasped_self(us_now);
 543
 544         for_each_wanted_builtin (j, tgt_j)
 545                 if (tgt_j->pfn_thread_exit_fl)
 546                         tgt_j->pfn_thread_exit_fl(file, line,
 547                                                   us_elapsed_absolute,
 548                                                   us_elapsed_thread);
 549
 550         tr2tls_unset_self();
 551 }
 552
 553 void trace2_def_param_fl(const char *file, int line, const char *param,
 554                          const char *value)
 555 {
 556         struct tr2_tgt *tgt_j;
 557         int j;
 558
 559         if (!trace2_enabled)
 560                 return;
 561
 562         for_each_wanted_builtin (j, tgt_j)
 563                 if (tgt_j->pfn_param_fl)
 564                         tgt_j->pfn_param_fl(file, line, param, value);
 565 }
 566
 567 void trace2_def_repo_fl(const char *file, int line, struct repository *repo)
 568 {
 569         struct tr2_tgt *tgt_j;
 570         int j;
 571
 572         if (!trace2_enabled)
 573                 return;
 574
 575         if (repo->trace2_repo_id)
 576                 return;
 577
 578         repo->trace2_repo_id = tr2tls_locked_increment(&tr2_next_repo_id);
 579
 580         for_each_wanted_builtin (j, tgt_j)
 581                 if (tgt_j->pfn_repo_fl)
 582                         tgt_j->pfn_repo_fl(file, line, repo);
 583 }
 584
 585 void trace2_region_enter_printf_va_fl(const char *file, int line,
 586                                       const char *category, const char *label,
 587                                       const struct repository *repo,
 588                                       const char *fmt, va_list ap)
 589 {
 590         struct tr2_tgt *tgt_j;
 591         int j;
 592         uint64_t us_now;
 593         uint64_t us_elapsed_absolute;
 594
 595         if (!trace2_enabled)
 596                 return;
 597
 598         us_now = getnanotime() / 1000;
 599         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 600
 601         /*
 602          * Print the region-enter message at the current nesting
 603          * (indentation) level and then push a new level.
 604          *
 605          * We expect each target function to treat 'ap' as constant
 606          * and use va_copy.
 607          */
 608         for_each_wanted_builtin (j, tgt_j)
 609                 if (tgt_j->pfn_region_enter_printf_va_fl)
 610                         tgt_j->pfn_region_enter_printf_va_fl(
 611                                 file, line, us_elapsed_absolute, category,
 612                                 label, repo, fmt, ap);
 613
 614         tr2tls_push_self(us_now);
 615 }
 616
 617 void trace2_region_enter_fl(const char *file, int line, const char *category,
 618                             const char *label, const struct repository *repo, ...)
 619 {
 620         va_list ap;
 621         va_start(ap, repo);
 622         trace2_region_enter_printf_va_fl(file, line, category, label, repo,
 623                                          NULL, ap);
 624         va_end(ap);
 625
 626 }
 627
 628 void trace2_region_enter_printf_fl(const char *file, int line,
 629                                    const char *category, const char *label,
 630                                    const struct repository *repo,
 631                                    const char *fmt, ...)
 632 {
 633         va_list ap;
 634
 635         va_start(ap, fmt);
 636         trace2_region_enter_printf_va_fl(file, line, category, label, repo, fmt,
 637                                          ap);
 638         va_end(ap);
 639 }
 640
 641 void trace2_region_leave_printf_va_fl(const char *file, int line,
 642                                       const char *category, const char *label,
 643                                       const struct repository *repo,
 644                                       const char *fmt, va_list ap)
 645 {
 646         struct tr2_tgt *tgt_j;
 647         int j;
 648         uint64_t us_now;
 649         uint64_t us_elapsed_absolute;
 650         uint64_t us_elapsed_region;
 651
 652         if (!trace2_enabled)
 653                 return;
 654
 655         us_now = getnanotime() / 1000;
 656         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 657
 658         /*
 659          * Get the elapsed time in the current region before we
 660          * pop it off the stack.  Pop the stack.  And then print
 661          * the perf message at the new (shallower) level so that
 662          * it lines up with the corresponding push/enter.
 663          */
 664         us_elapsed_region = tr2tls_region_elasped_self(us_now);
 665
 666         tr2tls_pop_self();
 667
 668         /*
 669          * We expect each target function to treat 'ap' as constant
 670          * and use va_copy.
 671          */
 672         for_each_wanted_builtin (j, tgt_j)
 673                 if (tgt_j->pfn_region_leave_printf_va_fl)
 674                         tgt_j->pfn_region_leave_printf_va_fl(
 675                                 file, line, us_elapsed_absolute,
 676                                 us_elapsed_region, category, label, repo, fmt,
 677                                 ap);
 678 }
 679
 680 void trace2_region_leave_fl(const char *file, int line, const char *category,
 681                             const char *label, const struct repository *repo, ...)
 682 {
 683         va_list ap;
 684         va_start(ap, repo);
 685         trace2_region_leave_printf_va_fl(file, line, category, label, repo,
 686                                          NULL, ap);
 687         va_end(ap);
 688 }
 689
 690 void trace2_region_leave_printf_fl(const char *file, int line,
 691                                    const char *category, const char *label,
 692                                    const struct repository *repo,
 693                                    const char *fmt, ...)
 694 {
 695         va_list ap;
 696
 697         va_start(ap, fmt);
 698         trace2_region_leave_printf_va_fl(file, line, category, label, repo, fmt,
 699                                          ap);
 700         va_end(ap);
 701 }
 702
 703 void trace2_data_string_fl(const char *file, int line, const char *category,
 704                            const struct repository *repo, const char *key,
 705                            const char *value)
 706 {
 707         struct tr2_tgt *tgt_j;
 708         int j;
 709         uint64_t us_now;
 710         uint64_t us_elapsed_absolute;
 711         uint64_t us_elapsed_region;
 712
 713         if (!trace2_enabled)
 714                 return;
 715
 716         us_now = getnanotime() / 1000;
 717         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 718         us_elapsed_region = tr2tls_region_elasped_self(us_now);
 719
 720         for_each_wanted_builtin (j, tgt_j)
 721                 if (tgt_j->pfn_data_fl)
 722                         tgt_j->pfn_data_fl(file, line, us_elapsed_absolute,
 723                                            us_elapsed_region, category, repo,
 724                                            key, value);
 725 }
 726
 727 void trace2_data_intmax_fl(const char *file, int line, const char *category,
 728                            const struct repository *repo, const char *key,
 729                            intmax_t value)
 730 {
 731         struct strbuf buf_string = STRBUF_INIT;
 732
 733         if (!trace2_enabled)
 734                 return;
 735
 736         strbuf_addf(&buf_string, "%" PRIdMAX, value);
 737         trace2_data_string_fl(file, line, category, repo, key, buf_string.buf);
 738         strbuf_release(&buf_string);
 739 }
 740
 741 void trace2_data_json_fl(const char *file, int line, const char *category,
 742                          const struct repository *repo, const char *key,
 743                          const struct json_writer *value)
 744 {
 745         struct tr2_tgt *tgt_j;
 746         int j;
 747         uint64_t us_now;
 748         uint64_t us_elapsed_absolute;
 749         uint64_t us_elapsed_region;
 750
 751         if (!trace2_enabled)
 752                 return;
 753
 754         us_now = getnanotime() / 1000;
 755         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 756         us_elapsed_region = tr2tls_region_elasped_self(us_now);
 757
 758         for_each_wanted_builtin (j, tgt_j)
 759                 if (tgt_j->pfn_data_json_fl)
 760                         tgt_j->pfn_data_json_fl(file, line, us_elapsed_absolute,
 761                                                 us_elapsed_region, category,
 762                                                 repo, key, value);
 763 }
 764
 765 void trace2_printf_va_fl(const char *file, int line, const char *fmt,
 766                          va_list ap)
 767 {
 768         struct tr2_tgt *tgt_j;
 769         int j;
 770         uint64_t us_now;
 771         uint64_t us_elapsed_absolute;
 772
 773         if (!trace2_enabled)
 774                 return;
 775
 776         us_now = getnanotime() / 1000;
 777         us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
 778
 779         /*
 780          * We expect each target function to treat 'ap' as constant
 781          * and use va_copy.
 782          */
 783         for_each_wanted_builtin (j, tgt_j)
 784                 if (tgt_j->pfn_printf_va_fl)
 785                         tgt_j->pfn_printf_va_fl(file, line, us_elapsed_absolute,
 786                                                 fmt, ap);
 787 }
 788
 789 void trace2_printf_fl(const char *file, int line, const char *fmt, ...)
 790 {
 791         va_list ap;
 792
 793         va_start(ap, fmt);
 794         trace2_printf_va_fl(file, line, fmt, ap);
 795         va_end(ap);
 796 }
 797
 798 const char *trace2_session_id(void)
 799 {
 800         return tr2_sid_get();
 801 }