* Write out process accounting information, on process exit. * Data to be written out is specified in Leffler, et al. * and are enumerated below. (They're also noted in the system * "acct.h" header file.) */
| 345 | * "acct.h" header file.) |
| 346 | */ |
| 347 | int |
| 348 | acct_process(struct thread *td) |
| 349 | { |
| 350 | struct acctv3 acct; |
| 351 | struct timeval ut, st, tmp; |
| 352 | struct plimit *oldlim; |
| 353 | struct proc *p; |
| 354 | struct rusage ru; |
| 355 | int t, ret; |
| 356 | |
| 357 | /* |
| 358 | * Lockless check of accounting condition before doing the hard |
| 359 | * work. |
| 360 | */ |
| 361 | if (acct_vp == NULL || acct_suspended) |
| 362 | return (0); |
| 363 | |
| 364 | sx_slock(&acct_sx); |
| 365 | |
| 366 | /* |
| 367 | * If accounting isn't enabled, don't bother. Have to check again |
| 368 | * once we own the lock in case we raced with disabling of accounting |
| 369 | * by another thread. |
| 370 | */ |
| 371 | if (acct_vp == NULL || acct_suspended) { |
| 372 | sx_sunlock(&acct_sx); |
| 373 | return (0); |
| 374 | } |
| 375 | |
| 376 | p = td->td_proc; |
| 377 | |
| 378 | /* |
| 379 | * Get process accounting information. |
| 380 | */ |
| 381 | |
| 382 | sx_slock(&proctree_lock); |
| 383 | PROC_LOCK(p); |
| 384 | |
| 385 | /* (1) The terminal from which the process was started */ |
| 386 | if ((p->p_flag & P_CONTROLT) && p->p_pgrp->pg_session->s_ttyp) |
| 387 | acct.ac_tty = tty_udev(p->p_pgrp->pg_session->s_ttyp); |
| 388 | else |
| 389 | acct.ac_tty = NODEV; |
| 390 | sx_sunlock(&proctree_lock); |
| 391 | |
| 392 | /* (2) The name of the command that ran */ |
| 393 | bcopy(p->p_comm, acct.ac_comm, sizeof acct.ac_comm); |
| 394 | |
| 395 | /* (3) The amount of user and system time that was used */ |
| 396 | rufetchcalc(p, &ru, &ut, &st); |
| 397 | acct.ac_utime = encode_timeval(ut); |
| 398 | acct.ac_stime = encode_timeval(st); |
| 399 | |
| 400 | /* (4) The elapsed time the command ran (and its starting time) */ |
| 401 | getboottime(&tmp); |
| 402 | timevaladd(&tmp, &p->p_stats->p_start); |
| 403 | acct.ac_btime = tmp.tv_sec; |
| 404 | microuptime(&tmp); |
no test coverage detected