1 #define PERL_NO_GET_CONTEXT
6 /* define DBG_SUB to cause a warning on each subroutine entry. */
9 /* define DBG_TIMER to cause a warning when the timer is turned on and off. */
10 /*#define DBG_TIMER 1 */
13 # define DBG_SUB_NOTIFY(A) dprof_dbg_sub_notify(A)
15 dprof_dbg_sub_notify(SV *Sub) {
16 CV *cv = INT2PTR(CV*,SvIVX(Sub));
17 GV *gv = cv ? CvGV(cv) : NULL;
19 warn("XS DBsub(%s::%s)\n",
20 ((GvSTASH(gv) && HvNAME(GvSTASH(gv))) ?
21 HvNAME(GvSTASH(gv)) : "(null)"),
24 warn("XS DBsub(unknown) at %x", Sub);
28 # define DBG_SUB_NOTIFY(A) /* nothing */
33 # define DBG_TIMER_NOTIFY(A) warn(A)
35 # define DBG_TIMER_NOTIFY(A) /* nothing */
38 /* HZ == clock ticks per second */
40 # define HZ ((I32)CLK_TCK)
42 # include <starlet.h> /* prototype for sys$gettim() */
43 # include <lib$routines.h>
44 # define Times(ptr) (dprof_times(aTHX_ ptr))
48 # define HZ ((I32)CLK_TCK)
53 # ifdef OS2 /* times() has significant overhead */
54 # define Times(ptr) (dprof_times(aTHX_ ptr))
55 # define INCL_DOSPROFILE
56 # define INCL_DOSERRORS
58 # define toLongLong(arg) (*(long long*)&(arg))
59 # define DPROF_HZ g_dprof_ticks
61 # define Times(ptr) (times(ptr))
66 XS(XS_Devel__DProf_END); /* used by prof_mark() */
68 /* Everything is built on times(2). See its manpage for a description
73 clock_t tms_utime; /* cpu time spent in user space */
74 clock_t tms_stime; /* cpu time spent in system */
75 clock_t realtime; /* elapsed real time, in ticks */
81 typedef union prof_any PROFANY;
85 char* out_file_name; /* output file (defaults to tmon.out) */
86 PerlIO* fp; /* pointer to tmon.out file */
87 Off_t TIMES_LOCATION; /* Where in the file to store the time totals */
88 int SAVE_STACK; /* How much data to buffer until end of run */
89 int prof_pid; /* pid of profiled process */
90 struct tms prof_start;
92 clock_t rprof_start; /* elapsed real time ticks */
112 #ifdef PERL_IMPLICIT_CONTEXT
119 prof_state_t g_prof_state;
121 #define g_dprof_ticks g_prof_state.dprof_ticks
122 #define g_out_file_name g_prof_state.out_file_name
123 #define g_fp g_prof_state.fp
124 #define g_TIMES_LOCATION g_prof_state.TIMES_LOCATION
125 #define g_SAVE_STACK g_prof_state.SAVE_STACK
126 #define g_prof_pid g_prof_state.prof_pid
127 #define g_prof_start g_prof_state.prof_start
128 #define g_prof_end g_prof_state.prof_end
129 #define g_rprof_start g_prof_state.rprof_start
130 #define g_rprof_end g_prof_state.rprof_end
131 #define g_wprof_u g_prof_state.wprof_u
132 #define g_wprof_s g_prof_state.wprof_s
133 #define g_wprof_r g_prof_state.wprof_r
134 #define g_otms_utime g_prof_state.otms_utime
135 #define g_otms_stime g_prof_state.otms_stime
136 #define g_orealtime g_prof_state.orealtime
137 #define g_profstack g_prof_state.profstack
138 #define g_profstack_max g_prof_state.profstack_max
139 #define g_profstack_ix g_prof_state.profstack_ix
140 #define g_cv_hash g_prof_state.cv_hash
141 #define g_total g_prof_state.total
142 #define g_lastid g_prof_state.lastid
143 #define g_default_perldb g_prof_state.default_perldb
144 #define g_depth g_prof_state.depth
145 #ifdef PERL_IMPLICIT_CONTEXT
146 # define g_THX g_prof_state.aTHX
149 # define g_frequ g_prof_state.frequ
150 # define g_start_cnt g_prof_state.start_cnt
154 dprof_times(pTHX_ struct tms *t)
162 if (CheckOSError(DosTmrQueryFreq(&g_frequ)))
163 croak("DosTmrQueryFreq: %s", SvPV(perl_get_sv("!",TRUE),n_a));
165 g_frequ = g_frequ/DPROF_HZ; /* count per tick */
166 if (CheckOSError(DosTmrQueryTime(&cnt)))
167 croak("DosTmrQueryTime: %s",
168 SvPV(perl_get_sv("!",TRUE), n_a));
169 g_start_cnt = toLongLong(cnt);
172 if (CheckOSError(DosTmrQueryTime(&cnt)))
173 croak("DosTmrQueryTime: %s", SvPV(perl_get_sv("!",TRUE), n_a));
175 return (t->tms_utime = (toLongLong(cnt) - g_start_cnt)/g_frequ);
179 /* Get wall time and convert to 10 ms intervals to
180 * produce the return value dprof expects */
181 # if defined(__DECC) && defined (__ALPHA)
184 _ckvmssts(sys$gettim(&vmstime));
186 retval = vmstime & 0x7fffffff;
188 /* (Older hw or ccs don't have an atomic 64-bit type, so we
189 * juggle 32-bit ints (and a float) to produce a time_t result
190 * with minimal loss of information.) */
191 long int vmstime[2],remainder,divisor = 100000;
192 _ckvmssts(sys$gettim((unsigned long int *)vmstime));
193 vmstime[1] &= 0x7fff; /* prevent overflow in EDIV */
194 _ckvmssts(lib$ediv(&divisor,vmstime,(long int *)&retval,&remainder));
196 /* Fill in the struct tms using the CRTL routine . . .*/
197 times((tbuffer_t *)t);
198 return (clock_t) retval;
199 # else /* !VMS && !OS2 */
206 prof_dumpa(pTHX_ opcode ptype, U32 id)
208 if (ptype == OP_LEAVESUB) {
209 PerlIO_printf(g_fp,"- %"UVxf"\n", (UV)id);
211 else if(ptype == OP_ENTERSUB) {
212 PerlIO_printf(g_fp,"+ %"UVxf"\n", (UV)id);
214 else if(ptype == OP_GOTO) {
215 PerlIO_printf(g_fp,"* %"UVxf"\n", (UV)id);
217 else if(ptype == OP_DIE) {
218 PerlIO_printf(g_fp,"/ %"UVxf"\n", (UV)id);
221 PerlIO_printf(g_fp,"Profiler unknown prof code %d\n", ptype);
226 prof_dumps(pTHX_ U32 id, char *pname, char *gname)
228 PerlIO_printf(g_fp,"& %"UVxf" %s %s\n", (UV)id, pname, gname);
232 prof_dumpt(pTHX_ long tms_utime, long tms_stime, long realtime)
234 PerlIO_printf(g_fp,"@ %ld %ld %ld\n", tms_utime, tms_stime, realtime);
238 prof_dump_until(pTHX_ long ix)
242 clock_t realtime1, realtime2;
244 realtime1 = Times(&t1);
247 opcode ptype = g_profstack[base++].ptype;
248 if (ptype == OP_TIME) {
249 long tms_utime = g_profstack[base++].tms_utime;
250 long tms_stime = g_profstack[base++].tms_stime;
251 long realtime = g_profstack[base++].realtime;
253 prof_dumpt(aTHX_ tms_utime, tms_stime, realtime);
255 else if (ptype == OP_GV) {
256 U32 id = g_profstack[base++].id;
257 char *pname = g_profstack[base++].name;
258 char *gname = g_profstack[base++].name;
260 prof_dumps(aTHX_ id, pname, gname);
263 U32 id = g_profstack[base++].id;
264 prof_dumpa(aTHX_ ptype, id);
268 realtime2 = Times(&t2);
269 if (realtime2 != realtime1 || t1.tms_utime != t2.tms_utime
270 || t1.tms_stime != t2.tms_stime) {
271 g_wprof_r += realtime2 - realtime1;
272 g_wprof_u += t2.tms_utime - t1.tms_utime;
273 g_wprof_s += t2.tms_stime - t1.tms_stime;
275 PerlIO_printf(g_fp,"+ & Devel::DProf::write\n");
276 PerlIO_printf(g_fp,"@ %"IVdf" %"IVdf" %"IVdf"\n",
277 /* The (IV) casts are one possibility:
278 * the Painfully Correct Way would be to
280 (IV)(t2.tms_utime - t1.tms_utime),
281 (IV)(t2.tms_stime - t1.tms_stime),
282 (IV)(realtime2 - realtime1));
283 PerlIO_printf(g_fp,"- & Devel::DProf::write\n");
284 g_otms_utime = t2.tms_utime;
285 g_otms_stime = t2.tms_stime;
286 g_orealtime = realtime2;
292 prof_mark(pTHX_ opcode ptype)
295 clock_t realtime, rdelta, udelta, sdelta;
297 SV *Sub = GvSV(PL_DBsub); /* name of current sub */
300 if (g_profstack_ix + 5 > g_profstack_max) {
301 g_profstack_max = g_profstack_max * 3 / 2;
302 Renew(g_profstack, g_profstack_max, PROFANY);
306 realtime = Times(&t);
307 rdelta = realtime - g_orealtime;
308 udelta = t.tms_utime - g_otms_utime;
309 sdelta = t.tms_stime - g_otms_stime;
310 if (rdelta || udelta || sdelta) {
312 g_profstack[g_profstack_ix++].ptype = OP_TIME;
313 g_profstack[g_profstack_ix++].tms_utime = udelta;
314 g_profstack[g_profstack_ix++].tms_stime = sdelta;
315 g_profstack[g_profstack_ix++].realtime = rdelta;
317 else { /* Write it to disk now so's not to eat up core */
318 if (g_prof_pid == (int)getpid()) {
319 prof_dumpt(aTHX_ udelta, sdelta, rdelta);
323 g_orealtime = realtime;
324 g_otms_stime = t.tms_stime;
325 g_otms_utime = t.tms_utime;
333 cv = INT2PTR(CV*,SvIVX(Sub));
334 svp = hv_fetch(g_cv_hash, (char*)&cv, sizeof(CV*), TRUE);
338 sv_setiv(*svp, id = ++g_lastid);
339 pname = ((GvSTASH(gv) && HvNAME(GvSTASH(gv)))
340 ? HvNAME(GvSTASH(gv))
343 if (CvXSUB(cv) == XS_Devel__DProf_END)
345 if (g_SAVE_STACK) { /* Store it for later recording -JH */
346 g_profstack[g_profstack_ix++].ptype = OP_GV;
347 g_profstack[g_profstack_ix++].id = id;
348 g_profstack[g_profstack_ix++].name = pname;
349 g_profstack[g_profstack_ix++].name = gname;
351 else { /* Write it to disk now so's not to eat up core */
352 /* Only record the parent's info */
353 if (g_prof_pid == (int)getpid()) {
354 prof_dumps(aTHX_ id, pname, gname);
358 PL_perldb = 0; /* Do not debug the kid. */
367 if (g_SAVE_STACK) { /* Store it for later recording -JH */
368 g_profstack[g_profstack_ix++].ptype = ptype;
369 g_profstack[g_profstack_ix++].id = id;
371 /* Only record the parent's info */
372 if (g_SAVE_STACK < g_profstack_ix) {
373 if (g_prof_pid == (int)getpid())
374 prof_dump_until(aTHX_ g_profstack_ix);
376 PL_perldb = 0; /* Do not debug the kid. */
380 else { /* Write it to disk now so's not to eat up core */
382 /* Only record the parent's info */
383 if (g_prof_pid == (int)getpid()) {
384 prof_dumpa(aTHX_ ptype, id);
388 PL_perldb = 0; /* Do not debug the kid. */
393 # define defstash PL_defstash
396 /* Counts overhead of prof_mark and extra XS call. */
398 test_time(pTHX_ clock_t *r, clock_t *u, clock_t *s)
400 CV *cv = perl_get_cv("Devel::DProf::NONESUCH_noxs", FALSE);
402 HV *oldstash = PL_curstash;
404 clock_t realtime1 = 0, realtime2 = 0;
405 U32 ototal = g_total;
406 U32 ostack = g_SAVE_STACK;
407 U32 operldb = PL_perldb;
409 g_SAVE_STACK = 1000000;
410 realtime1 = Times(&t1);
414 /* Disable debugging of perl_call_sv on second pass: */
415 PL_curstash = (k == 0 ? PL_defstash : PL_debstash);
416 PL_perldb = g_default_perldb;
419 g_profstack_ix = 0; /* Do not let the stack grow */
421 /* prof_mark(aTHX_ OP_ENTERSUB); */
423 PUSHMARK(PL_stack_sp);
424 perl_call_sv((SV*)cv, G_SCALAR);
426 /* prof_mark(aTHX_ OP_LEAVESUB); */
429 PL_curstash = oldstash;
430 if (k == 0) { /* Put time with debugging */
431 realtime2 = Times(&t2);
432 *r = realtime2 - realtime1;
433 *u = t2.tms_utime - t1.tms_utime;
434 *s = t2.tms_stime - t1.tms_stime;
436 else { /* Subtract time without debug */
437 realtime1 = Times(&t1);
438 *r -= realtime1 - realtime2;
439 *u -= t1.tms_utime - t2.tms_utime;
440 *s -= t1.tms_stime - t2.tms_stime;
445 g_SAVE_STACK = ostack;
450 prof_recordheader(pTHX)
454 /* g_fp is opened in the BOOT section */
455 PerlIO_printf(g_fp, "#fOrTyTwO\n");
456 PerlIO_printf(g_fp, "$hz=%"IVdf";\n", (IV)DPROF_HZ);
457 PerlIO_printf(g_fp, "$XS_VERSION='DProf %s';\n", XS_VERSION);
458 PerlIO_printf(g_fp, "# All values are given in HZ\n");
459 test_time(aTHX_ &r, &u, &s);
461 "$over_utime=%"IVdf"; $over_stime=%"IVdf"; $over_rtime=%"IVdf";\n",
462 /* The (IV) casts are one possibility:
463 * the Painfully Correct Way would be to
465 (IV)u, (IV)s, (IV)r);
466 PerlIO_printf(g_fp, "$over_tests=10000;\n");
468 g_TIMES_LOCATION = PerlIO_tell(g_fp);
470 /* Pad with whitespace. */
471 /* This should be enough even for very large numbers. */
472 PerlIO_printf(g_fp, "%*s\n", 240 , "");
474 PerlIO_printf(g_fp, "\n");
475 PerlIO_printf(g_fp, "PART2\n");
483 /* g_fp is opened in the BOOT section */
485 /* Now that we know the runtimes, fill them in at the recorded
489 prof_dump_until(aTHX_ g_profstack_ix);
491 PerlIO_seek(g_fp, g_TIMES_LOCATION, SEEK_SET);
492 /* Write into reserved 240 bytes: */
494 "$rrun_utime=%"IVdf"; $rrun_stime=%"IVdf"; $rrun_rtime=%"IVdf";",
495 /* The (IV) casts are one possibility:
496 * the Painfully Correct Way would be to
498 (IV)(g_prof_end.tms_utime-g_prof_start.tms_utime-g_wprof_u),
499 (IV)(g_prof_end.tms_stime-g_prof_start.tms_stime-g_wprof_s),
500 (IV)(g_rprof_end-g_rprof_start-g_wprof_r));
501 PerlIO_printf(g_fp, "\n$total_marks=%"IVdf, (IV)g_total);
509 check_depth(pTHX_ void *foo)
511 U32 need_depth = PTR2UV(foo);
512 if (need_depth != g_depth) {
513 if (need_depth > g_depth) {
514 warn("garbled call depth when profiling");
517 IV marks = g_depth - need_depth;
519 /* warn("Check_depth: got %d, expected %d\n", g_depth, need_depth); */
521 prof_mark(aTHX_ OP_DIE);
523 g_depth = need_depth;
535 SV *Sub = GvSV(PL_DBsub); /* name of current sub */
537 #ifdef PERL_IMPLICIT_CONTEXT
538 /* profile only the interpreter that loaded us */
541 perl_call_sv(INT2PTR(SV*,SvIV(Sub)), GIMME_V | G_NODEBUG);
546 HV *oldstash = PL_curstash;
550 SAVEDESTRUCTOR_X(check_depth, INT2PTR(void*,g_depth));
553 prof_mark(aTHX_ OP_ENTERSUB);
555 perl_call_sv(INT2PTR(SV*,SvIV(Sub)), GIMME_V | G_NODEBUG);
556 PL_curstash = oldstash;
557 prof_mark(aTHX_ OP_LEAVESUB);
565 #ifdef PERL_IMPLICIT_CONTEXT
569 prof_mark(aTHX_ OP_GOTO);
574 #endif /* for_real */
578 MODULE = Devel::DProf PACKAGE = DB
585 HV *oldstash = PL_curstash;
586 SV *Sub = GvSV(PL_DBsub); /* name of current sub */
587 /* SP -= items; added by xsubpp */
590 sv_setiv(PL_DBsingle, 0); /* disable DB single-stepping */
592 prof_mark(aTHX_ OP_ENTERSUB);
595 PL_curstash = PL_debstash; /* To disable debugging of perl_call_sv */
596 perl_call_sv(Sub, GIMME_V);
597 PL_curstash = oldstash;
599 prof_mark(aTHX_ OP_LEAVESUB);
601 /* PUTBACK; added by xsubpp */
606 MODULE = Devel::DProf PACKAGE = Devel::DProf
613 /* maybe the process forked--we want only
614 * the parent's profile.
617 #ifdef PERL_IMPLICIT_CONTEXT
620 g_prof_pid == (int)getpid())
622 g_rprof_end = Times(&g_prof_end);
623 DBG_TIMER_NOTIFY("Profiler timer is off.\n");
634 g_TIMES_LOCATION = 42;
635 g_SAVE_STACK = 1<<14;
636 g_profstack_max = 128;
637 #ifdef PERL_IMPLICIT_CONTEXT
641 /* Before we go anywhere make sure we were invoked
642 * properly, else we'll dump core.
645 croak("DProf: run perl with -d to use DProf.\n");
647 /* When we hook up the XS DB::sub we'll be redefining
648 * the DB::sub from the PM file. Turn off warnings
652 bool warn_tmp = PL_dowarn;
654 newXS("DB::sub", XS_DB_sub, file);
655 newXS("DB::goto", XS_DB_goto, file);
656 PL_dowarn = warn_tmp;
659 sv_setiv(PL_DBsingle, 0); /* disable DB single-stepping */
662 char *buffer = getenv("PERL_DPROF_BUFFER");
665 g_SAVE_STACK = atoi(buffer);
668 buffer = getenv("PERL_DPROF_TICKS");
671 g_dprof_ticks = atoi(buffer); /* Used under OS/2 only */
677 buffer = getenv("PERL_DPROF_OUT_FILE_NAME");
678 g_out_file_name = savepv(buffer ? buffer : "tmon.out");
681 if ((g_fp = PerlIO_open(g_out_file_name, "w")) == NULL)
682 croak("DProf: unable to write '%s', errno = %d\n",
683 g_out_file_name, errno);
685 g_default_perldb = PERLDBf_NONAME | PERLDBf_SUB | PERLDBf_GOTO;
687 g_prof_pid = (int)getpid();
689 New(0, g_profstack, g_profstack_max, PROFANY);
690 prof_recordheader(aTHX);
691 DBG_TIMER_NOTIFY("Profiler timer is on.\n");
692 g_orealtime = g_rprof_start = Times(&g_prof_start);
693 g_otms_utime = g_prof_start.tms_utime;
694 g_otms_stime = g_prof_start.tms_stime;
695 PL_perldb = g_default_perldb;