projects / p5sagit/p5-mst-13.2.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | history | HEAD
Correct detection of absent modules. Based on
[p5sagit/p5-mst-13.2.git] / ext / Devel / DProf / DProf.xs
CommitLineData
146174a9 1#define PERL_NO_GET_CONTEXT
583a019e 2#include "EXTERN.h"
3#include "perl.h"
4#include "XSUB.h"
5
94277a97 6/* define DBG_SUB to cause a warning on each subroutine entry. */
7399586d 7/*#define DBG_SUB 1 */
94277a97 8
9/* define DBG_TIMER to cause a warning when the timer is turned on and off. */
10/*#define DBG_TIMER 1 */
583a019e 11
ae7638f4 12#ifdef DEBUGGING
13#define ASSERT(x) assert(x)
14#else
15#define ASSERT(x)
16#endif
17
7619c85e 18static CV *
19db_get_cv(pTHX_ SV *sv)
20{
21 CV *cv;
22
19bcb543 23 if (SvIOK(sv)) { /* if (PERLDB_SUB_NN) { */
7619c85e 24 cv = INT2PTR(CV*,SvIVX(sv));
25 } else {
26 if (SvPOK(sv)) {
27 cv = get_cv(SvPVX(sv), TRUE);
28 } else if (SvROK(sv)) {
29 cv = (CV*)SvRV(sv);
30 } else {
31 croak("DProf: don't know what subroutine to profile");
32 }
33 }
34 return cv;
35}
36
583a019e 37#ifdef DBG_SUB
7619c85e 38# define DBG_SUB_NOTIFY(A) dprof_dbg_sub_notify(aTHX_ A)
94277a97 39void
7619c85e 40dprof_dbg_sub_notify(pTHX_ SV *Sub) {
41 CV *cv = db_get_cv(aTHX_ Sub);
94277a97 42 GV *gv = cv ? CvGV(cv) : NULL;
43 if (cv && gv) {
44 warn("XS DBsub(%s::%s)\n",
45 ((GvSTASH(gv) && HvNAME(GvSTASH(gv))) ?
46 HvNAME(GvSTASH(gv)) : "(null)"),
47 GvNAME(gv));
48 } else {
49 warn("XS DBsub(unknown) at %x", Sub);
50 }
51}
583a019e 52#else
94277a97 53# define DBG_SUB_NOTIFY(A) /* nothing */
583a019e 54#endif
55
94277a97 56
583a019e 57#ifdef DBG_TIMER
146174a9 58# define DBG_TIMER_NOTIFY(A) warn(A)
583a019e 59#else
60# define DBG_TIMER_NOTIFY(A) /* nothing */
61#endif
62
583a019e 63/* HZ == clock ticks per second */
64#ifdef VMS
552e38a9 65# define HZ ((I32)CLK_TCK)
583a019e 66# define DPROF_HZ HZ
67# include <starlet.h> /* prototype for sys$gettim() */
3e4b306a 68# include <lib$routines.h>
146174a9 69# define Times(ptr) (dprof_times(aTHX_ ptr))
583a019e 70#else
71# ifndef HZ
72# ifdef CLK_TCK
552e38a9 73# define HZ ((I32)CLK_TCK)
583a019e 74# else
75# define HZ 60
76# endif
77# endif
78# ifdef OS2 /* times() has significant overhead */
146174a9 79# define Times(ptr) (dprof_times(aTHX_ ptr))
583a019e 80# define INCL_DOSPROFILE
81# define INCL_DOSERRORS
82# include <os2.h>
83# define toLongLong(arg) (*(long long*)&(arg))
146174a9 84# define DPROF_HZ g_dprof_ticks
583a019e 85# else
86# define Times(ptr) (times(ptr))
87# define DPROF_HZ HZ
88# endif
89#endif
90
91XS(XS_Devel__DProf_END); /* used by prof_mark() */
92
583a019e 93/* Everything is built on times(2). See its manpage for a description
94 * of the timings.
95 */
96
583a019e 97union prof_any {
98 clock_t tms_utime; /* cpu time spent in user space */
99 clock_t tms_stime; /* cpu time spent in system */
100 clock_t realtime; /* elapsed real time, in ticks */
101 char *name;
102 U32 id;
103 opcode ptype;
104};
105
106typedef union prof_any PROFANY;
107
146174a9 108typedef struct {
109 U32 dprof_ticks;
110 char* out_file_name; /* output file (defaults to tmon.out) */
111 PerlIO* fp; /* pointer to tmon.out file */
4a9d6100 112 Off_t TIMES_LOCATION; /* Where in the file to store the time totals */
146174a9 113 int SAVE_STACK; /* How much data to buffer until end of run */
114 int prof_pid; /* pid of profiled process */
115 struct tms prof_start;
116 struct tms prof_end;
117 clock_t rprof_start; /* elapsed real time ticks */
118 clock_t rprof_end;
119 clock_t wprof_u;
120 clock_t wprof_s;
121 clock_t wprof_r;
122 clock_t otms_utime;
123 clock_t otms_stime;
124 clock_t orealtime;
125 PROFANY* profstack;
126 int profstack_max;
127 int profstack_ix;
7619c85e 128 HV* cv_hash; /* cache of CV to identifier mappings */
129 SV* key_hash; /* key for cv_hash */
146174a9 130 U32 total;
131 U32 lastid;
132 U32 default_perldb;
425d70b4 133 UV depth;
146174a9 134#ifdef OS2
135 ULONG frequ;
136 long long start_cnt;
137#endif
138#ifdef PERL_IMPLICIT_CONTEXT
139# define register
140 pTHX;
141# undef register
142#endif
143} prof_state_t;
144
145prof_state_t g_prof_state;
146
147#define g_dprof_ticks g_prof_state.dprof_ticks
148#define g_out_file_name g_prof_state.out_file_name
149#define g_fp g_prof_state.fp
150#define g_TIMES_LOCATION g_prof_state.TIMES_LOCATION
151#define g_SAVE_STACK g_prof_state.SAVE_STACK
152#define g_prof_pid g_prof_state.prof_pid
153#define g_prof_start g_prof_state.prof_start
154#define g_prof_end g_prof_state.prof_end
155#define g_rprof_start g_prof_state.rprof_start
156#define g_rprof_end g_prof_state.rprof_end
157#define g_wprof_u g_prof_state.wprof_u
158#define g_wprof_s g_prof_state.wprof_s
159#define g_wprof_r g_prof_state.wprof_r
160#define g_otms_utime g_prof_state.otms_utime
161#define g_otms_stime g_prof_state.otms_stime
162#define g_orealtime g_prof_state.orealtime
163#define g_profstack g_prof_state.profstack
164#define g_profstack_max g_prof_state.profstack_max
165#define g_profstack_ix g_prof_state.profstack_ix
166#define g_cv_hash g_prof_state.cv_hash
7619c85e 167#define g_key_hash g_prof_state.key_hash
146174a9 168#define g_total g_prof_state.total
169#define g_lastid g_prof_state.lastid
170#define g_default_perldb g_prof_state.default_perldb
171#define g_depth g_prof_state.depth
172#ifdef PERL_IMPLICIT_CONTEXT
173# define g_THX g_prof_state.aTHX
174#endif
175#ifdef OS2
176# define g_frequ g_prof_state.frequ
177# define g_start_cnt g_prof_state.start_cnt
178#endif
583a019e 179
146174a9 180clock_t
181dprof_times(pTHX_ struct tms *t)
583a019e 182{
146174a9 183#ifdef OS2
184 ULONG rc;
185 QWORD cnt;
cb50131a 186 STRLEN n_a;
146174a9 187
188 if (!g_frequ) {
189 if (CheckOSError(DosTmrQueryFreq(&g_frequ)))
cb50131a 190 croak("DosTmrQueryFreq: %s", SvPV(perl_get_sv("!",TRUE),n_a));
146174a9 191 else
192 g_frequ = g_frequ/DPROF_HZ; /* count per tick */
193 if (CheckOSError(DosTmrQueryTime(&cnt)))
194 croak("DosTmrQueryTime: %s",
cb50131a 195 SvPV(perl_get_sv("!",TRUE), n_a));
146174a9 196 g_start_cnt = toLongLong(cnt);
583a019e 197 }
146174a9 198
199 if (CheckOSError(DosTmrQueryTime(&cnt)))
cb50131a 200 croak("DosTmrQueryTime: %s", SvPV(perl_get_sv("!",TRUE), n_a));
146174a9 201 t->tms_stime = 0;
202 return (t->tms_utime = (toLongLong(cnt) - g_start_cnt)/g_frequ);
203#else /* !OS2 */
204# ifdef VMS
205 clock_t retval;
206 /* Get wall time and convert to 10 ms intervals to
207 * produce the return value dprof expects */
208# if defined(__DECC) && defined (__ALPHA)
209# include <ints.h>
210 uint64 vmstime;
211 _ckvmssts(sys$gettim(&vmstime));
212 vmstime /= 100000;
213 retval = vmstime & 0x7fffffff;
214# else
215 /* (Older hw or ccs don't have an atomic 64-bit type, so we
216 * juggle 32-bit ints (and a float) to produce a time_t result
217 * with minimal loss of information.) */
218 long int vmstime[2],remainder,divisor = 100000;
219 _ckvmssts(sys$gettim((unsigned long int *)vmstime));
220 vmstime[1] &= 0x7fff; /* prevent overflow in EDIV */
221 _ckvmssts(lib$ediv(&divisor,vmstime,(long int *)&retval,&remainder));
222# endif
223 /* Fill in the struct tms using the CRTL routine . . .*/
224 times((tbuffer_t *)t);
225 return (clock_t) retval;
226# else /* !VMS && !OS2 */
227 return times(t);
228# endif
229#endif
230}
583a019e 231
232static void
146174a9 233prof_dumpa(pTHX_ opcode ptype, U32 id)
583a019e 234{
146174a9 235 if (ptype == OP_LEAVESUB) {
236 PerlIO_printf(g_fp,"- %"UVxf"\n", (UV)id);
237 }
238 else if(ptype == OP_ENTERSUB) {
239 PerlIO_printf(g_fp,"+ %"UVxf"\n", (UV)id);
240 }
241 else if(ptype == OP_GOTO) {
242 PerlIO_printf(g_fp,"* %"UVxf"\n", (UV)id);
243 }
244 else if(ptype == OP_DIE) {
245 PerlIO_printf(g_fp,"/ %"UVxf"\n", (UV)id);
246 }
247 else {
248 PerlIO_printf(g_fp,"Profiler unknown prof code %d\n", ptype);
583a019e 249 }
250}
251
252static void
146174a9 253prof_dumps(pTHX_ U32 id, char *pname, char *gname)
583a019e 254{
146174a9 255 PerlIO_printf(g_fp,"& %"UVxf" %s %s\n", (UV)id, pname, gname);
583a019e 256}
257
583a019e 258static void
146174a9 259prof_dumpt(pTHX_ long tms_utime, long tms_stime, long realtime)
583a019e 260{
146174a9 261 PerlIO_printf(g_fp,"@ %ld %ld %ld\n", tms_utime, tms_stime, realtime);
583a019e 262}
263
264static void
146174a9 265prof_dump_until(pTHX_ long ix)
583a019e 266{
267 long base = 0;
268 struct tms t1, t2;
269 clock_t realtime1, realtime2;
270
271 realtime1 = Times(&t1);
272
146174a9 273 while (base < ix) {
274 opcode ptype = g_profstack[base++].ptype;
583a019e 275 if (ptype == OP_TIME) {
146174a9 276 long tms_utime = g_profstack[base++].tms_utime;
277 long tms_stime = g_profstack[base++].tms_stime;
278 long realtime = g_profstack[base++].realtime;
279
280 prof_dumpt(aTHX_ tms_utime, tms_stime, realtime);
281 }
282 else if (ptype == OP_GV) {
283 U32 id = g_profstack[base++].id;
284 char *pname = g_profstack[base++].name;
285 char *gname = g_profstack[base++].name;
286
287 prof_dumps(aTHX_ id, pname, gname);
288 }
289 else {
290 U32 id = g_profstack[base++].id;
291 prof_dumpa(aTHX_ ptype, id);
583a019e 292 }
293 }
146174a9 294 PerlIO_flush(g_fp);
583a019e 295 realtime2 = Times(&t2);
296 if (realtime2 != realtime1 || t1.tms_utime != t2.tms_utime
297 || t1.tms_stime != t2.tms_stime) {
146174a9 298 g_wprof_r += realtime2 - realtime1;
299 g_wprof_u += t2.tms_utime - t1.tms_utime;
300 g_wprof_s += t2.tms_stime - t1.tms_stime;
301
302 PerlIO_printf(g_fp,"+ & Devel::DProf::write\n");
303 PerlIO_printf(g_fp,"@ %"IVdf" %"IVdf" %"IVdf"\n",
304 /* The (IV) casts are one possibility:
305 * the Painfully Correct Way would be to
306 * have Clock_t_f. */
307 (IV)(t2.tms_utime - t1.tms_utime),
308 (IV)(t2.tms_stime - t1.tms_stime),
309 (IV)(realtime2 - realtime1));
310 PerlIO_printf(g_fp,"- & Devel::DProf::write\n");
311 g_otms_utime = t2.tms_utime;
312 g_otms_stime = t2.tms_stime;
313 g_orealtime = realtime2;
314 PerlIO_flush(g_fp);
583a019e 315 }
316}
317
452932c3 318static void
7619c85e 319set_cv_key(pTHX_ CV *cv, char *pname, char *gname)
320{
19bcb543 321 SvGROW(g_key_hash, sizeof(CV**) + strlen(pname) + strlen(gname) + 3);
322 sv_setpvn(g_key_hash, (char*)&cv, sizeof(CV**));
7619c85e 323 sv_catpv(g_key_hash, pname);
324 sv_catpv(g_key_hash, "::");
325 sv_catpv(g_key_hash, gname);
326}
327
328static void
146174a9 329prof_mark(pTHX_ opcode ptype)
583a019e 330{
146174a9 331 struct tms t;
332 clock_t realtime, rdelta, udelta, sdelta;
146174a9 333 U32 id;
334 SV *Sub = GvSV(PL_DBsub); /* name of current sub */
335
336 if (g_SAVE_STACK) {
ae7638f4 337 if (g_profstack_ix + 10 > g_profstack_max) {
146174a9 338 g_profstack_max = g_profstack_max * 3 / 2;
339 Renew(g_profstack, g_profstack_max, PROFANY);
340 }
341 }
583a019e 342
146174a9 343 realtime = Times(&t);
344 rdelta = realtime - g_orealtime;
345 udelta = t.tms_utime - g_otms_utime;
346 sdelta = t.tms_stime - g_otms_stime;
347 if (rdelta || udelta || sdelta) {
348 if (g_SAVE_STACK) {
ae7638f4 349 ASSERT(g_profstack_ix + 4 <= g_profstack_max);
146174a9 350 g_profstack[g_profstack_ix++].ptype = OP_TIME;
351 g_profstack[g_profstack_ix++].tms_utime = udelta;
352 g_profstack[g_profstack_ix++].tms_stime = sdelta;
353 g_profstack[g_profstack_ix++].realtime = rdelta;
354 }
355 else { /* Write it to disk now so's not to eat up core */
356 if (g_prof_pid == (int)getpid()) {
357 prof_dumpt(aTHX_ udelta, sdelta, rdelta);
358 PerlIO_flush(g_fp);
583a019e 359 }
583a019e 360 }
146174a9 361 g_orealtime = realtime;
362 g_otms_stime = t.tms_stime;
363 g_otms_utime = t.tms_utime;
364 }
583a019e 365
146174a9 366 {
367 SV **svp;
368 char *gname, *pname;
369 CV *cv;
7619c85e 370 GV *gv;
146174a9 371
7619c85e 372 cv = db_get_cv(aTHX_ Sub);
373 gv = CvGV(cv);
374 pname = ((GvSTASH(gv) && HvNAME(GvSTASH(gv)))
375 ? HvNAME(GvSTASH(gv))
376 : "(null)");
377 gname = GvNAME(gv);
378
379 set_cv_key(aTHX_ cv, pname, gname);
380 svp = hv_fetch(g_cv_hash, SvPVX(g_key_hash), SvCUR(g_key_hash), TRUE);
146174a9 381 if (!SvOK(*svp)) {
146174a9 382 sv_setiv(*svp, id = ++g_lastid);
146174a9 383 if (CvXSUB(cv) == XS_Devel__DProf_END)
384 return;
385 if (g_SAVE_STACK) { /* Store it for later recording -JH */
ae7638f4 386 ASSERT(g_profstack_ix + 4 <= g_profstack_max);
146174a9 387 g_profstack[g_profstack_ix++].ptype = OP_GV;
388 g_profstack[g_profstack_ix++].id = id;
389 g_profstack[g_profstack_ix++].name = pname;
390 g_profstack[g_profstack_ix++].name = gname;
391 }
392 else { /* Write it to disk now so's not to eat up core */
393 /* Only record the parent's info */
394 if (g_prof_pid == (int)getpid()) {
395 prof_dumps(aTHX_ id, pname, gname);
396 PerlIO_flush(g_fp);
583a019e 397 }
146174a9 398 else
399 PL_perldb = 0; /* Do not debug the kid. */
583a019e 400 }
401 }
146174a9 402 else {
403 id = SvIV(*svp);
404 }
405 }
583a019e 406
146174a9 407 g_total++;
408 if (g_SAVE_STACK) { /* Store it for later recording -JH */
ae7638f4 409 ASSERT(g_profstack_ix + 2 <= g_profstack_max);
146174a9 410 g_profstack[g_profstack_ix++].ptype = ptype;
411 g_profstack[g_profstack_ix++].id = id;
412
413 /* Only record the parent's info */
414 if (g_SAVE_STACK < g_profstack_ix) {
415 if (g_prof_pid == (int)getpid())
416 prof_dump_until(aTHX_ g_profstack_ix);
417 else
418 PL_perldb = 0; /* Do not debug the kid. */
419 g_profstack_ix = 0;
420 }
421 }
422 else { /* Write it to disk now so's not to eat up core */
583a019e 423
146174a9 424 /* Only record the parent's info */
425 if (g_prof_pid == (int)getpid()) {
426 prof_dumpa(aTHX_ ptype, id);
427 PerlIO_flush(g_fp);
428 }
429 else
430 PL_perldb = 0; /* Do not debug the kid. */
431 }
583a019e 432}
433
583a019e 434#ifdef PL_NEEDED
435# define defstash PL_defstash
436#endif
437
438/* Counts overhead of prof_mark and extra XS call. */
439static void
146174a9 440test_time(pTHX_ clock_t *r, clock_t *u, clock_t *s)
583a019e 441{
583a019e 442 CV *cv = perl_get_cv("Devel::DProf::NONESUCH_noxs", FALSE);
443 int i, j, k = 0;
146174a9 444 HV *oldstash = PL_curstash;
583a019e 445 struct tms t1, t2;
9c5ffd7c 446 clock_t realtime1 = 0, realtime2 = 0;
146174a9 447 U32 ototal = g_total;
448 U32 ostack = g_SAVE_STACK;
449 U32 operldb = PL_perldb;
583a019e 450
146174a9 451 g_SAVE_STACK = 1000000;
583a019e 452 realtime1 = Times(&t1);
453
454 while (k < 2) {
455 i = 0;
456 /* Disable debugging of perl_call_sv on second pass: */
146174a9 457 PL_curstash = (k == 0 ? PL_defstash : PL_debstash);
458 PL_perldb = g_default_perldb;
583a019e 459 while (++i <= 100) {
460 j = 0;
146174a9 461 g_profstack_ix = 0; /* Do not let the stack grow */
583a019e 462 while (++j <= 100) {
146174a9 463/* prof_mark(aTHX_ OP_ENTERSUB); */
583a019e 464
146174a9 465 PUSHMARK(PL_stack_sp);
466 perl_call_sv((SV*)cv, G_SCALAR);
467 PL_stack_sp--;
468/* prof_mark(aTHX_ OP_LEAVESUB); */
583a019e 469 }
470 }
146174a9 471 PL_curstash = oldstash;
583a019e 472 if (k == 0) { /* Put time with debugging */
473 realtime2 = Times(&t2);
474 *r = realtime2 - realtime1;
475 *u = t2.tms_utime - t1.tms_utime;
476 *s = t2.tms_stime - t1.tms_stime;
146174a9 477 }
478 else { /* Subtract time without debug */
583a019e 479 realtime1 = Times(&t1);
480 *r -= realtime1 - realtime2;
481 *u -= t1.tms_utime - t2.tms_utime;
482 *s -= t1.tms_stime - t2.tms_stime;
483 }
484 k++;
485 }
146174a9 486 g_total = ototal;
487 g_SAVE_STACK = ostack;
488 PL_perldb = operldb;
583a019e 489}
490
491static void
146174a9 492prof_recordheader(pTHX)
583a019e 493{
146174a9 494 clock_t r, u, s;
495
496 /* g_fp is opened in the BOOT section */
497 PerlIO_printf(g_fp, "#fOrTyTwO\n");
498 PerlIO_printf(g_fp, "$hz=%"IVdf";\n", (IV)DPROF_HZ);
499 PerlIO_printf(g_fp, "$XS_VERSION='DProf %s';\n", XS_VERSION);
500 PerlIO_printf(g_fp, "# All values are given in HZ\n");
501 test_time(aTHX_ &r, &u, &s);
502 PerlIO_printf(g_fp,
503 "$over_utime=%"IVdf"; $over_stime=%"IVdf"; $over_rtime=%"IVdf";\n",
504 /* The (IV) casts are one possibility:
505 * the Painfully Correct Way would be to
506 * have Clock_t_f. */
507 (IV)u, (IV)s, (IV)r);
508 PerlIO_printf(g_fp, "$over_tests=10000;\n");
509
510 g_TIMES_LOCATION = PerlIO_tell(g_fp);
511
512 /* Pad with whitespace. */
513 /* This should be enough even for very large numbers. */
514 PerlIO_printf(g_fp, "%*s\n", 240 , "");
515
516 PerlIO_printf(g_fp, "\n");
517 PerlIO_printf(g_fp, "PART2\n");
518
519 PerlIO_flush(g_fp);
583a019e 520}
521
522static void
146174a9 523prof_record(pTHX)
583a019e 524{
146174a9 525 /* g_fp is opened in the BOOT section */
526
527 /* Now that we know the runtimes, fill them in at the recorded
528 location -JH */
583a019e 529
146174a9 530 if (g_SAVE_STACK) {
531 prof_dump_until(aTHX_ g_profstack_ix);
532 }
533 PerlIO_seek(g_fp, g_TIMES_LOCATION, SEEK_SET);
534 /* Write into reserved 240 bytes: */
535 PerlIO_printf(g_fp,
536 "$rrun_utime=%"IVdf"; $rrun_stime=%"IVdf"; $rrun_rtime=%"IVdf";",
537 /* The (IV) casts are one possibility:
538 * the Painfully Correct Way would be to
539 * have Clock_t_f. */
540 (IV)(g_prof_end.tms_utime-g_prof_start.tms_utime-g_wprof_u),
541 (IV)(g_prof_end.tms_stime-g_prof_start.tms_stime-g_wprof_s),
542 (IV)(g_rprof_end-g_rprof_start-g_wprof_r));
543 PerlIO_printf(g_fp, "\n$total_marks=%"IVdf, (IV)g_total);
583a019e 544
146174a9 545 PerlIO_close(g_fp);
583a019e 546}
547
548#define NONESUCH()
549
583a019e 550static void
d7b9cf63 551check_depth(pTHX_ void *foo)
583a019e 552{
4b19af01 553 U32 need_depth = PTR2UV(foo);
146174a9 554 if (need_depth != g_depth) {
555 if (need_depth > g_depth) {
583a019e 556 warn("garbled call depth when profiling");
146174a9 557 }
558 else {
425d70b4 559 IV marks = g_depth - need_depth;
583a019e 560
146174a9 561/* warn("Check_depth: got %d, expected %d\n", g_depth, need_depth); */
583a019e 562 while (marks--) {
146174a9 563 prof_mark(aTHX_ OP_DIE);
583a019e 564 }
146174a9 565 g_depth = need_depth;
583a019e 566 }
567 }
568}
569
570#define for_real
571#ifdef for_real
572
573XS(XS_DB_sub)
574{
c6c619a9 575 dMARK;
146174a9 576 dORIGMARK;
577 SV *Sub = GvSV(PL_DBsub); /* name of current sub */
578
579#ifdef PERL_IMPLICIT_CONTEXT
580 /* profile only the interpreter that loaded us */
581 if (g_THX != aTHX) {
582 PUSHMARK(ORIGMARK);
7619c85e 583 perl_call_sv((SV*)db_get_cv(aTHX_ Sub), GIMME_V | G_NODEBUG);
146174a9 584 }
585 else
586#endif
587 {
588 HV *oldstash = PL_curstash;
7619c85e 589 I32 old_scopestack_ix = PL_scopestack_ix;
590 I32 old_cxstack_ix = cxstack_ix;
583a019e 591
94277a97 592 DBG_SUB_NOTIFY(Sub);
583a019e 593
a6f8e609 594 SAVEDESTRUCTOR_X(check_depth, INT2PTR(void*,g_depth));
146174a9 595 g_depth++;
583a019e 596
146174a9 597 prof_mark(aTHX_ OP_ENTERSUB);
598 PUSHMARK(ORIGMARK);
7619c85e 599 perl_call_sv((SV*)db_get_cv(aTHX_ Sub), GIMME_V | G_NODEBUG);
8063af02 600 PL_curstash = oldstash;
7619c85e 601
602 /* Make sure we are on the same context and scope as before the call
603 * to the sub. If the called sub was exited via a goto, next or
604 * last then this will try to croak(), however perl may still crash
605 * with a segfault. */
606 if (PL_scopestack_ix != old_scopestack_ix || cxstack_ix != old_cxstack_ix)
607 croak("panic: Devel::DProf inconsistent subroutine return");
608
146174a9 609 prof_mark(aTHX_ OP_LEAVESUB);
610 g_depth--;
611 }
612 return;
583a019e 613}
614
615XS(XS_DB_goto)
616{
146174a9 617#ifdef PERL_IMPLICIT_CONTEXT
618 if (g_THX == aTHX)
619#endif
620 {
621 prof_mark(aTHX_ OP_GOTO);
583a019e 622 return;
146174a9 623 }
583a019e 624}
625
626#endif /* for_real */
627
628#ifdef testing
629
630 MODULE = Devel::DProf PACKAGE = DB
631
632 void
633 sub(...)
146174a9 634 PPCODE:
635 {
583a019e 636 dORIGMARK;
146174a9 637 HV *oldstash = PL_curstash;
638 SV *Sub = GvSV(PL_DBsub); /* name of current sub */
583a019e 639 /* SP -= items; added by xsubpp */
94277a97 640 DBG_SUB_NOTIFY(Sub);
583a019e 641
146174a9 642 sv_setiv(PL_DBsingle, 0); /* disable DB single-stepping */
583a019e 643
146174a9 644 prof_mark(aTHX_ OP_ENTERSUB);
645 PUSHMARK(ORIGMARK);
583a019e 646
146174a9 647 PL_curstash = PL_debstash; /* To disable debugging of perl_call_sv */
d781cccd 648 perl_call_sv(Sub, GIMME_V);
146174a9 649 PL_curstash = oldstash;
583a019e 650
146174a9 651 prof_mark(aTHX_ OP_LEAVESUB);
583a019e 652 SPAGAIN;
653 /* PUTBACK; added by xsubpp */
146174a9 654 }
583a019e 655
656#endif /* testing */
657
658MODULE = Devel::DProf PACKAGE = Devel::DProf
659
660void
661END()
146174a9 662PPCODE:
663 {
664 if (PL_DBsub) {
665 /* maybe the process forked--we want only
666 * the parent's profile.
667 */
668 if (
669#ifdef PERL_IMPLICIT_CONTEXT
670 g_THX == aTHX &&
671#endif
672 g_prof_pid == (int)getpid())
673 {
674 g_rprof_end = Times(&g_prof_end);
675 DBG_TIMER_NOTIFY("Profiler timer is off.\n");
676 prof_record(aTHX);
677 }
678 }
679 }
583a019e 680
681void
682NONESUCH()
683
684BOOT:
146174a9 685 {
686 g_TIMES_LOCATION = 42;
687 g_SAVE_STACK = 1<<14;
688 g_profstack_max = 128;
689#ifdef PERL_IMPLICIT_CONTEXT
690 g_THX = aTHX;
691#endif
692
583a019e 693 /* Before we go anywhere make sure we were invoked
694 * properly, else we'll dump core.
695 */
146174a9 696 if (!PL_DBsub)
697 croak("DProf: run perl with -d to use DProf.\n");
583a019e 698
699 /* When we hook up the XS DB::sub we'll be redefining
700 * the DB::sub from the PM file. Turn off warnings
701 * while we do this.
702 */
703 {
7c436af3 704 bool warn_tmp = PL_dowarn;
146174a9 705 PL_dowarn = 0;
706 newXS("DB::sub", XS_DB_sub, file);
707 newXS("DB::goto", XS_DB_goto, file);
708 PL_dowarn = warn_tmp;
583a019e 709 }
710
146174a9 711 sv_setiv(PL_DBsingle, 0); /* disable DB single-stepping */
583a019e 712
713 {
714 char *buffer = getenv("PERL_DPROF_BUFFER");
715
716 if (buffer) {
146174a9 717 g_SAVE_STACK = atoi(buffer);
583a019e 718 }
719
720 buffer = getenv("PERL_DPROF_TICKS");
721
722 if (buffer) {
146174a9 723 g_dprof_ticks = atoi(buffer); /* Used under OS/2 only */
724 }
725 else {
726 g_dprof_ticks = HZ;
583a019e 727 }
583a019e 728
146174a9 729 buffer = getenv("PERL_DPROF_OUT_FILE_NAME");
730 g_out_file_name = savepv(buffer ? buffer : "tmon.out");
731 }
583a019e 732
146174a9 733 if ((g_fp = PerlIO_open(g_out_file_name, "w")) == NULL)
734 croak("DProf: unable to write '%s', errno = %d\n",
735 g_out_file_name, errno);
583a019e 736
146174a9 737 g_default_perldb = PERLDBf_NONAME | PERLDBf_SUB | PERLDBf_GOTO;
738 g_cv_hash = newHV();
7619c85e 739 g_key_hash = newSV(256);
146174a9 740 g_prof_pid = (int)getpid();
583a019e 741
146174a9 742 New(0, g_profstack, g_profstack_max, PROFANY);
743 prof_recordheader(aTHX);
583a019e 744 DBG_TIMER_NOTIFY("Profiler timer is on.\n");
146174a9 745 g_orealtime = g_rprof_start = Times(&g_prof_start);
746 g_otms_utime = g_prof_start.tms_utime;
747 g_otms_stime = g_prof_start.tms_stime;
748 PL_perldb = g_default_perldb;
749 }
Unnamed repository; edit this file to name it for gitweb.