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Break apart the list of functions defined in universal.c by perl
[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)) {
aa07b2f6 27 cv = get_cv(SvPVX_const(sv), TRUE);
7619c85e 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) {
0626a780 41 CV * const cv = db_get_cv(aTHX_ Sub);
42 GV * const gv = cv ? CvGV(cv) : NULL;
94277a97 43 if (cv && gv) {
44 warn("XS DBsub(%s::%s)\n",
bfcb3514 45 ((GvSTASH(gv) && HvNAME_get(GvSTASH(gv))) ?
46 HvNAME_get(GvSTASH(gv)) : "(null)"),
94277a97 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))
d86c571c 70# define NEEDS_DPROF_TIMES
583a019e 71#else
59512d54 72# ifdef BSDish
146174a9 73# define Times(ptr) (dprof_times(aTHX_ ptr))
d86c571c 74# define NEEDS_DPROF_TIMES
59512d54 75# define HZ 1000000
583a019e 76# define DPROF_HZ HZ
59512d54 77# else
78# ifndef HZ
79# ifdef CLK_TCK
80# define HZ ((I32)CLK_TCK)
81# else
82# define HZ 60
83# endif
84# endif
85# ifdef OS2 /* times() has significant overhead */
86# define Times(ptr) (dprof_times(aTHX_ ptr))
87# define NEEDS_DPROF_TIMES
88# define INCL_DOSPROFILE
89# define INCL_DOSERRORS
90# include <os2.h>
91# define toLongLong(arg) (*(long long*)&(arg))
92# define DPROF_HZ g_dprof_ticks
93# else
94# define Times(ptr) (times(ptr))
95# define DPROF_HZ HZ
96# endif
97# endif
583a019e 98#endif
99
100XS(XS_Devel__DProf_END); /* used by prof_mark() */
101
583a019e 102/* Everything is built on times(2). See its manpage for a description
103 * of the timings.
104 */
105
583a019e 106union prof_any {
107 clock_t tms_utime; /* cpu time spent in user space */
108 clock_t tms_stime; /* cpu time spent in system */
109 clock_t realtime; /* elapsed real time, in ticks */
d86c571c 110 const char *name;
583a019e 111 U32 id;
112 opcode ptype;
113};
114
115typedef union prof_any PROFANY;
116
146174a9 117typedef struct {
118 U32 dprof_ticks;
d86c571c 119 const char* out_file_name; /* output file (defaults to tmon.out) */
146174a9 120 PerlIO* fp; /* pointer to tmon.out file */
4a9d6100 121 Off_t TIMES_LOCATION; /* Where in the file to store the time totals */
146174a9 122 int SAVE_STACK; /* How much data to buffer until end of run */
123 int prof_pid; /* pid of profiled process */
124 struct tms prof_start;
125 struct tms prof_end;
126 clock_t rprof_start; /* elapsed real time ticks */
127 clock_t rprof_end;
128 clock_t wprof_u;
129 clock_t wprof_s;
130 clock_t wprof_r;
131 clock_t otms_utime;
132 clock_t otms_stime;
133 clock_t orealtime;
134 PROFANY* profstack;
135 int profstack_max;
136 int profstack_ix;
7619c85e 137 HV* cv_hash; /* cache of CV to identifier mappings */
138 SV* key_hash; /* key for cv_hash */
146174a9 139 U32 total;
140 U32 lastid;
141 U32 default_perldb;
425d70b4 142 UV depth;
146174a9 143#ifdef OS2
144 ULONG frequ;
145 long long start_cnt;
146#endif
147#ifdef PERL_IMPLICIT_CONTEXT
82f07646 148 PerlInterpreter *my_perl;
146174a9 149#endif
150} prof_state_t;
151
152prof_state_t g_prof_state;
153
154#define g_dprof_ticks g_prof_state.dprof_ticks
155#define g_out_file_name g_prof_state.out_file_name
156#define g_fp g_prof_state.fp
157#define g_TIMES_LOCATION g_prof_state.TIMES_LOCATION
158#define g_SAVE_STACK g_prof_state.SAVE_STACK
159#define g_prof_pid g_prof_state.prof_pid
160#define g_prof_start g_prof_state.prof_start
161#define g_prof_end g_prof_state.prof_end
162#define g_rprof_start g_prof_state.rprof_start
163#define g_rprof_end g_prof_state.rprof_end
164#define g_wprof_u g_prof_state.wprof_u
165#define g_wprof_s g_prof_state.wprof_s
166#define g_wprof_r g_prof_state.wprof_r
167#define g_otms_utime g_prof_state.otms_utime
168#define g_otms_stime g_prof_state.otms_stime
169#define g_orealtime g_prof_state.orealtime
170#define g_profstack g_prof_state.profstack
171#define g_profstack_max g_prof_state.profstack_max
172#define g_profstack_ix g_prof_state.profstack_ix
173#define g_cv_hash g_prof_state.cv_hash
7619c85e 174#define g_key_hash g_prof_state.key_hash
146174a9 175#define g_total g_prof_state.total
176#define g_lastid g_prof_state.lastid
177#define g_default_perldb g_prof_state.default_perldb
178#define g_depth g_prof_state.depth
179#ifdef PERL_IMPLICIT_CONTEXT
82f07646 180# define g_THX g_prof_state.my_perl
146174a9 181#endif
182#ifdef OS2
183# define g_frequ g_prof_state.frequ
184# define g_start_cnt g_prof_state.start_cnt
185#endif
583a019e 186
d86c571c 187#ifdef NEEDS_DPROF_TIMES
0626a780 188static clock_t
146174a9 189dprof_times(pTHX_ struct tms *t)
583a019e 190{
146174a9 191#ifdef OS2
192 ULONG rc;
193 QWORD cnt;
194
195 if (!g_frequ) {
196 if (CheckOSError(DosTmrQueryFreq(&g_frequ)))
e4006f9d 197 croak("DosTmrQueryFreq: %s", SvPV_nolen(perl_get_sv("!",TRUE)));
146174a9 198 else
199 g_frequ = g_frequ/DPROF_HZ; /* count per tick */
200 if (CheckOSError(DosTmrQueryTime(&cnt)))
201 croak("DosTmrQueryTime: %s",
2596d9fe 202 SvPV_nolen_const(perl_get_sv("!",TRUE)));
146174a9 203 g_start_cnt = toLongLong(cnt);
583a019e 204 }
146174a9 205
206 if (CheckOSError(DosTmrQueryTime(&cnt)))
e4006f9d 207 croak("DosTmrQueryTime: %s", SvPV_nolen(perl_get_sv("!",TRUE)));
146174a9 208 t->tms_stime = 0;
209 return (t->tms_utime = (toLongLong(cnt) - g_start_cnt)/g_frequ);
210#else /* !OS2 */
211# ifdef VMS
212 clock_t retval;
213 /* Get wall time and convert to 10 ms intervals to
214 * produce the return value dprof expects */
215# if defined(__DECC) && defined (__ALPHA)
216# include <ints.h>
217 uint64 vmstime;
218 _ckvmssts(sys$gettim(&vmstime));
219 vmstime /= 100000;
220 retval = vmstime & 0x7fffffff;
221# else
222 /* (Older hw or ccs don't have an atomic 64-bit type, so we
223 * juggle 32-bit ints (and a float) to produce a time_t result
224 * with minimal loss of information.) */
225 long int vmstime[2],remainder,divisor = 100000;
226 _ckvmssts(sys$gettim((unsigned long int *)vmstime));
227 vmstime[1] &= 0x7fff; /* prevent overflow in EDIV */
228 _ckvmssts(lib$ediv(&divisor,vmstime,(long int *)&retval,&remainder));
229# endif
230 /* Fill in the struct tms using the CRTL routine . . .*/
231 times((tbuffer_t *)t);
232 return (clock_t) retval;
233# else /* !VMS && !OS2 */
59512d54 234# ifdef BSDish
235# include <sys/resource.h>
236 struct rusage ru;
237 struct timeval tv;
238 /* Measure offset from start time to avoid overflow */
239 static struct timeval tv0 = { 0, 0 };
240
241 if (!tv0.tv_sec)
242 if (gettimeofday(&tv0, NULL) < 0)
243 croak("gettimeofday: %s", SvPV_nolen_const(perl_get_sv("!",TRUE)));
244
245 if (getrusage(0, &ru) < 0)
246 croak("getrusage: %s", SvPV_nolen_const(perl_get_sv("!",TRUE)));
247
248 if (gettimeofday(&tv, NULL) < 0)
249 croak("gettimeofday: %s", SvPV_nolen_const(perl_get_sv("!",TRUE)));
250
251 t->tms_stime = DPROF_HZ * ru.ru_stime.tv_sec + ru.ru_stime.tv_usec;
252 t->tms_utime = DPROF_HZ * ru.ru_utime.tv_sec + ru.ru_utime.tv_usec;
253
254 if (tv.tv_usec < tv0.tv_usec)
255 tv.tv_sec--, tv.tv_usec += DPROF_HZ;
256
257 return DPROF_HZ * (tv.tv_sec - tv0.tv_sec) + tv.tv_usec - tv0.tv_usec;
258# else /* !VMS && !OS2 && !BSD! */
146174a9 259 return times(t);
59512d54 260# endif
146174a9 261# endif
262#endif
263}
d86c571c 264#endif
583a019e 265
266static void
146174a9 267prof_dumpa(pTHX_ opcode ptype, U32 id)
583a019e 268{
146174a9 269 if (ptype == OP_LEAVESUB) {
270 PerlIO_printf(g_fp,"- %"UVxf"\n", (UV)id);
271 }
272 else if(ptype == OP_ENTERSUB) {
273 PerlIO_printf(g_fp,"+ %"UVxf"\n", (UV)id);
274 }
275 else if(ptype == OP_GOTO) {
276 PerlIO_printf(g_fp,"* %"UVxf"\n", (UV)id);
277 }
278 else if(ptype == OP_DIE) {
279 PerlIO_printf(g_fp,"/ %"UVxf"\n", (UV)id);
280 }
281 else {
282 PerlIO_printf(g_fp,"Profiler unknown prof code %d\n", ptype);
583a019e 283 }
284}
285
286static void
0626a780 287prof_dumps(pTHX_ U32 id, const char *pname, const char *gname)
583a019e 288{
146174a9 289 PerlIO_printf(g_fp,"& %"UVxf" %s %s\n", (UV)id, pname, gname);
583a019e 290}
291
583a019e 292static void
146174a9 293prof_dumpt(pTHX_ long tms_utime, long tms_stime, long realtime)
583a019e 294{
146174a9 295 PerlIO_printf(g_fp,"@ %ld %ld %ld\n", tms_utime, tms_stime, realtime);
583a019e 296}
297
298static void
146174a9 299prof_dump_until(pTHX_ long ix)
583a019e 300{
301 long base = 0;
302 struct tms t1, t2;
0626a780 303 clock_t realtime2;
583a019e 304
0626a780 305 const clock_t realtime1 = Times(&t1);
583a019e 306
146174a9 307 while (base < ix) {
0626a780 308 const opcode ptype = g_profstack[base++].ptype;
583a019e 309 if (ptype == OP_TIME) {
0626a780 310 const long tms_utime = g_profstack[base++].tms_utime;
311 const long tms_stime = g_profstack[base++].tms_stime;
312 const long realtime = g_profstack[base++].realtime;
146174a9 313
314 prof_dumpt(aTHX_ tms_utime, tms_stime, realtime);
315 }
316 else if (ptype == OP_GV) {
0626a780 317 const U32 id = g_profstack[base++].id;
318 const char * const pname = g_profstack[base++].name;
319 const char * const gname = g_profstack[base++].name;
146174a9 320
321 prof_dumps(aTHX_ id, pname, gname);
322 }
323 else {
0626a780 324 const U32 id = g_profstack[base++].id;
146174a9 325 prof_dumpa(aTHX_ ptype, id);
583a019e 326 }
327 }
146174a9 328 PerlIO_flush(g_fp);
583a019e 329 realtime2 = Times(&t2);
330 if (realtime2 != realtime1 || t1.tms_utime != t2.tms_utime
331 || t1.tms_stime != t2.tms_stime) {
146174a9 332 g_wprof_r += realtime2 - realtime1;
333 g_wprof_u += t2.tms_utime - t1.tms_utime;
334 g_wprof_s += t2.tms_stime - t1.tms_stime;
335
336 PerlIO_printf(g_fp,"+ & Devel::DProf::write\n");
337 PerlIO_printf(g_fp,"@ %"IVdf" %"IVdf" %"IVdf"\n",
338 /* The (IV) casts are one possibility:
339 * the Painfully Correct Way would be to
340 * have Clock_t_f. */
341 (IV)(t2.tms_utime - t1.tms_utime),
342 (IV)(t2.tms_stime - t1.tms_stime),
343 (IV)(realtime2 - realtime1));
344 PerlIO_printf(g_fp,"- & Devel::DProf::write\n");
345 g_otms_utime = t2.tms_utime;
346 g_otms_stime = t2.tms_stime;
347 g_orealtime = realtime2;
348 PerlIO_flush(g_fp);
583a019e 349 }
350}
351
452932c3 352static void
0626a780 353set_cv_key(pTHX_ CV *cv, const char *pname, const char *gname)
7619c85e 354{
19bcb543 355 SvGROW(g_key_hash, sizeof(CV**) + strlen(pname) + strlen(gname) + 3);
356 sv_setpvn(g_key_hash, (char*)&cv, sizeof(CV**));
7619c85e 357 sv_catpv(g_key_hash, pname);
358 sv_catpv(g_key_hash, "::");
359 sv_catpv(g_key_hash, gname);
360}
361
362static void
146174a9 363prof_mark(pTHX_ opcode ptype)
583a019e 364{
146174a9 365 struct tms t;
366 clock_t realtime, rdelta, udelta, sdelta;
146174a9 367 U32 id;
0626a780 368 SV * const Sub = GvSV(PL_DBsub); /* name of current sub */
146174a9 369
370 if (g_SAVE_STACK) {
ae7638f4 371 if (g_profstack_ix + 10 > g_profstack_max) {
146174a9 372 g_profstack_max = g_profstack_max * 3 / 2;
373 Renew(g_profstack, g_profstack_max, PROFANY);
374 }
375 }
583a019e 376
146174a9 377 realtime = Times(&t);
378 rdelta = realtime - g_orealtime;
379 udelta = t.tms_utime - g_otms_utime;
380 sdelta = t.tms_stime - g_otms_stime;
381 if (rdelta || udelta || sdelta) {
382 if (g_SAVE_STACK) {
ae7638f4 383 ASSERT(g_profstack_ix + 4 <= g_profstack_max);
146174a9 384 g_profstack[g_profstack_ix++].ptype = OP_TIME;
385 g_profstack[g_profstack_ix++].tms_utime = udelta;
386 g_profstack[g_profstack_ix++].tms_stime = sdelta;
387 g_profstack[g_profstack_ix++].realtime = rdelta;
388 }
389 else { /* Write it to disk now so's not to eat up core */
390 if (g_prof_pid == (int)getpid()) {
391 prof_dumpt(aTHX_ udelta, sdelta, rdelta);
392 PerlIO_flush(g_fp);
583a019e 393 }
583a019e 394 }
146174a9 395 g_orealtime = realtime;
396 g_otms_stime = t.tms_stime;
397 g_otms_utime = t.tms_utime;
398 }
583a019e 399
146174a9 400 {
401 SV **svp;
402 char *gname, *pname;
146174a9 403
0626a780 404 CV * const cv = db_get_cv(aTHX_ Sub);
405 GV * const gv = CvGV(cv);
93fec93b 406 if (isGV_with_GP(gv)) {
407 pname = GvSTASH(gv) ? HvNAME_get(GvSTASH(gv)) : NULL;
408 pname = pname ? pname : (char *) "(null)";
409 gname = GvNAME(gv);
410 } else {
411 gname = pname = (char *) "(null)";
412 }
7619c85e 413
414 set_cv_key(aTHX_ cv, pname, gname);
aa07b2f6 415 svp = hv_fetch(g_cv_hash, SvPVX_const(g_key_hash), SvCUR(g_key_hash), TRUE);
146174a9 416 if (!SvOK(*svp)) {
146174a9 417 sv_setiv(*svp, id = ++g_lastid);
146174a9 418 if (CvXSUB(cv) == XS_Devel__DProf_END)
419 return;
420 if (g_SAVE_STACK) { /* Store it for later recording -JH */
ae7638f4 421 ASSERT(g_profstack_ix + 4 <= g_profstack_max);
146174a9 422 g_profstack[g_profstack_ix++].ptype = OP_GV;
423 g_profstack[g_profstack_ix++].id = id;
424 g_profstack[g_profstack_ix++].name = pname;
425 g_profstack[g_profstack_ix++].name = gname;
426 }
427 else { /* Write it to disk now so's not to eat up core */
428 /* Only record the parent's info */
429 if (g_prof_pid == (int)getpid()) {
430 prof_dumps(aTHX_ id, pname, gname);
431 PerlIO_flush(g_fp);
583a019e 432 }
146174a9 433 else
434 PL_perldb = 0; /* Do not debug the kid. */
583a019e 435 }
436 }
146174a9 437 else {
438 id = SvIV(*svp);
439 }
440 }
583a019e 441
146174a9 442 g_total++;
443 if (g_SAVE_STACK) { /* Store it for later recording -JH */
ae7638f4 444 ASSERT(g_profstack_ix + 2 <= g_profstack_max);
146174a9 445 g_profstack[g_profstack_ix++].ptype = ptype;
446 g_profstack[g_profstack_ix++].id = id;
447
448 /* Only record the parent's info */
449 if (g_SAVE_STACK < g_profstack_ix) {
450 if (g_prof_pid == (int)getpid())
451 prof_dump_until(aTHX_ g_profstack_ix);
452 else
453 PL_perldb = 0; /* Do not debug the kid. */
454 g_profstack_ix = 0;
455 }
456 }
457 else { /* Write it to disk now so's not to eat up core */
583a019e 458
146174a9 459 /* Only record the parent's info */
460 if (g_prof_pid == (int)getpid()) {
461 prof_dumpa(aTHX_ ptype, id);
462 PerlIO_flush(g_fp);
463 }
464 else
465 PL_perldb = 0; /* Do not debug the kid. */
466 }
583a019e 467}
468
583a019e 469/* Counts overhead of prof_mark and extra XS call. */
470static void
146174a9 471test_time(pTHX_ clock_t *r, clock_t *u, clock_t *s)
583a019e 472{
0626a780 473 CV * const cv = perl_get_cv("Devel::DProf::NONESUCH_noxs", FALSE);
474 HV * const oldstash = PL_curstash;
583a019e 475 struct tms t1, t2;
0626a780 476 const U32 ototal = g_total;
477 const U32 ostack = g_SAVE_STACK;
478 const U32 operldb = PL_perldb;
479 int k = 0;
480
481 clock_t realtime1 = Times(&t1);
482 clock_t realtime2 = 0;
583a019e 483
146174a9 484 g_SAVE_STACK = 1000000;
0626a780 485
583a019e 486 while (k < 2) {
0626a780 487 int i = 0;
583a019e 488 /* Disable debugging of perl_call_sv on second pass: */
146174a9 489 PL_curstash = (k == 0 ? PL_defstash : PL_debstash);
490 PL_perldb = g_default_perldb;
583a019e 491 while (++i <= 100) {
0626a780 492 int j = 0;
146174a9 493 g_profstack_ix = 0; /* Do not let the stack grow */
583a019e 494 while (++j <= 100) {
146174a9 495/* prof_mark(aTHX_ OP_ENTERSUB); */
583a019e 496
146174a9 497 PUSHMARK(PL_stack_sp);
498 perl_call_sv((SV*)cv, G_SCALAR);
499 PL_stack_sp--;
500/* prof_mark(aTHX_ OP_LEAVESUB); */
583a019e 501 }
502 }
146174a9 503 PL_curstash = oldstash;
583a019e 504 if (k == 0) { /* Put time with debugging */
505 realtime2 = Times(&t2);
506 *r = realtime2 - realtime1;
507 *u = t2.tms_utime - t1.tms_utime;
508 *s = t2.tms_stime - t1.tms_stime;
146174a9 509 }
510 else { /* Subtract time without debug */
583a019e 511 realtime1 = Times(&t1);
512 *r -= realtime1 - realtime2;
513 *u -= t1.tms_utime - t2.tms_utime;
514 *s -= t1.tms_stime - t2.tms_stime;
515 }
516 k++;
517 }
146174a9 518 g_total = ototal;
519 g_SAVE_STACK = ostack;
520 PL_perldb = operldb;
583a019e 521}
522
523static void
146174a9 524prof_recordheader(pTHX)
583a019e 525{
146174a9 526 clock_t r, u, s;
527
528 /* g_fp is opened in the BOOT section */
529 PerlIO_printf(g_fp, "#fOrTyTwO\n");
530 PerlIO_printf(g_fp, "$hz=%"IVdf";\n", (IV)DPROF_HZ);
531 PerlIO_printf(g_fp, "$XS_VERSION='DProf %s';\n", XS_VERSION);
532 PerlIO_printf(g_fp, "# All values are given in HZ\n");
533 test_time(aTHX_ &r, &u, &s);
534 PerlIO_printf(g_fp,
535 "$over_utime=%"IVdf"; $over_stime=%"IVdf"; $over_rtime=%"IVdf";\n",
536 /* The (IV) casts are one possibility:
537 * the Painfully Correct Way would be to
538 * have Clock_t_f. */
539 (IV)u, (IV)s, (IV)r);
540 PerlIO_printf(g_fp, "$over_tests=10000;\n");
541
542 g_TIMES_LOCATION = PerlIO_tell(g_fp);
543
544 /* Pad with whitespace. */
545 /* This should be enough even for very large numbers. */
546 PerlIO_printf(g_fp, "%*s\n", 240 , "");
547
548 PerlIO_printf(g_fp, "\n");
549 PerlIO_printf(g_fp, "PART2\n");
550
551 PerlIO_flush(g_fp);
583a019e 552}
553
554static void
146174a9 555prof_record(pTHX)
583a019e 556{
146174a9 557 /* g_fp is opened in the BOOT section */
558
559 /* Now that we know the runtimes, fill them in at the recorded
560 location -JH */
583a019e 561
146174a9 562 if (g_SAVE_STACK) {
563 prof_dump_until(aTHX_ g_profstack_ix);
564 }
565 PerlIO_seek(g_fp, g_TIMES_LOCATION, SEEK_SET);
566 /* Write into reserved 240 bytes: */
567 PerlIO_printf(g_fp,
568 "$rrun_utime=%"IVdf"; $rrun_stime=%"IVdf"; $rrun_rtime=%"IVdf";",
569 /* The (IV) casts are one possibility:
570 * the Painfully Correct Way would be to
571 * have Clock_t_f. */
572 (IV)(g_prof_end.tms_utime-g_prof_start.tms_utime-g_wprof_u),
573 (IV)(g_prof_end.tms_stime-g_prof_start.tms_stime-g_wprof_s),
574 (IV)(g_rprof_end-g_rprof_start-g_wprof_r));
575 PerlIO_printf(g_fp, "\n$total_marks=%"IVdf, (IV)g_total);
583a019e 576
146174a9 577 PerlIO_close(g_fp);
583a019e 578}
579
580#define NONESUCH()
581
583a019e 582static void
d7b9cf63 583check_depth(pTHX_ void *foo)
583a019e 584{
0626a780 585 const U32 need_depth = PTR2UV(foo);
146174a9 586 if (need_depth != g_depth) {
587 if (need_depth > g_depth) {
583a019e 588 warn("garbled call depth when profiling");
146174a9 589 }
590 else {
425d70b4 591 IV marks = g_depth - need_depth;
583a019e 592
146174a9 593/* warn("Check_depth: got %d, expected %d\n", g_depth, need_depth); */
583a019e 594 while (marks--) {
146174a9 595 prof_mark(aTHX_ OP_DIE);
583a019e 596 }
146174a9 597 g_depth = need_depth;
583a019e 598 }
599 }
600}
601
602#define for_real
603#ifdef for_real
604
0626a780 605XS(XS_DB_sub);
583a019e 606XS(XS_DB_sub)
607{
c6c619a9 608 dMARK;
146174a9 609 dORIGMARK;
0626a780 610 SV * const Sub = GvSV(PL_DBsub); /* name of current sub */
146174a9 611
612#ifdef PERL_IMPLICIT_CONTEXT
613 /* profile only the interpreter that loaded us */
614 if (g_THX != aTHX) {
615 PUSHMARK(ORIGMARK);
7619c85e 616 perl_call_sv((SV*)db_get_cv(aTHX_ Sub), GIMME_V | G_NODEBUG);
146174a9 617 }
618 else
619#endif
620 {
0626a780 621 HV * const oldstash = PL_curstash;
622 const I32 old_scopestack_ix = PL_scopestack_ix;
623 const I32 old_cxstack_ix = cxstack_ix;
583a019e 624
94277a97 625 DBG_SUB_NOTIFY(Sub);
583a019e 626
a6f8e609 627 SAVEDESTRUCTOR_X(check_depth, INT2PTR(void*,g_depth));
146174a9 628 g_depth++;
583a019e 629
146174a9 630 prof_mark(aTHX_ OP_ENTERSUB);
631 PUSHMARK(ORIGMARK);
7619c85e 632 perl_call_sv((SV*)db_get_cv(aTHX_ Sub), GIMME_V | G_NODEBUG);
8063af02 633 PL_curstash = oldstash;
7619c85e 634
635 /* Make sure we are on the same context and scope as before the call
636 * to the sub. If the called sub was exited via a goto, next or
637 * last then this will try to croak(), however perl may still crash
638 * with a segfault. */
639 if (PL_scopestack_ix != old_scopestack_ix || cxstack_ix != old_cxstack_ix)
640 croak("panic: Devel::DProf inconsistent subroutine return");
641
146174a9 642 prof_mark(aTHX_ OP_LEAVESUB);
643 g_depth--;
644 }
645 return;
583a019e 646}
647
0626a780 648XS(XS_DB_goto);
583a019e 649XS(XS_DB_goto)
650{
146174a9 651#ifdef PERL_IMPLICIT_CONTEXT
652 if (g_THX == aTHX)
653#endif
654 {
655 prof_mark(aTHX_ OP_GOTO);
583a019e 656 return;
146174a9 657 }
583a019e 658}
659
660#endif /* for_real */
661
662#ifdef testing
663
664 MODULE = Devel::DProf PACKAGE = DB
665
666 void
667 sub(...)
146174a9 668 PPCODE:
669 {
583a019e 670 dORIGMARK;
0626a780 671 HV * const oldstash = PL_curstash;
672 SV * const Sub = GvSV(PL_DBsub); /* name of current sub */
583a019e 673 /* SP -= items; added by xsubpp */
94277a97 674 DBG_SUB_NOTIFY(Sub);
583a019e 675
146174a9 676 sv_setiv(PL_DBsingle, 0); /* disable DB single-stepping */
583a019e 677
146174a9 678 prof_mark(aTHX_ OP_ENTERSUB);
679 PUSHMARK(ORIGMARK);
583a019e 680
146174a9 681 PL_curstash = PL_debstash; /* To disable debugging of perl_call_sv */
d781cccd 682 perl_call_sv(Sub, GIMME_V);
146174a9 683 PL_curstash = oldstash;
583a019e 684
146174a9 685 prof_mark(aTHX_ OP_LEAVESUB);
583a019e 686 SPAGAIN;
687 /* PUTBACK; added by xsubpp */
146174a9 688 }
583a019e 689
690#endif /* testing */
691
692MODULE = Devel::DProf PACKAGE = Devel::DProf
693
694void
695END()
146174a9 696PPCODE:
697 {
698 if (PL_DBsub) {
699 /* maybe the process forked--we want only
700 * the parent's profile.
701 */
702 if (
703#ifdef PERL_IMPLICIT_CONTEXT
704 g_THX == aTHX &&
705#endif
706 g_prof_pid == (int)getpid())
707 {
708 g_rprof_end = Times(&g_prof_end);
709 DBG_TIMER_NOTIFY("Profiler timer is off.\n");
710 prof_record(aTHX);
711 }
712 }
713 }
583a019e 714
715void
716NONESUCH()
717
718BOOT:
146174a9 719 {
720 g_TIMES_LOCATION = 42;
721 g_SAVE_STACK = 1<<14;
722 g_profstack_max = 128;
723#ifdef PERL_IMPLICIT_CONTEXT
724 g_THX = aTHX;
725#endif
726
583a019e 727 /* Before we go anywhere make sure we were invoked
728 * properly, else we'll dump core.
729 */
146174a9 730 if (!PL_DBsub)
731 croak("DProf: run perl with -d to use DProf.\n");
583a019e 732
733 /* When we hook up the XS DB::sub we'll be redefining
734 * the DB::sub from the PM file. Turn off warnings
735 * while we do this.
736 */
737 {
0626a780 738 const bool warn_tmp = PL_dowarn;
146174a9 739 PL_dowarn = 0;
740 newXS("DB::sub", XS_DB_sub, file);
741 newXS("DB::goto", XS_DB_goto, file);
742 PL_dowarn = warn_tmp;
583a019e 743 }
744
146174a9 745 sv_setiv(PL_DBsingle, 0); /* disable DB single-stepping */
583a019e 746
747 {
0626a780 748 const char *buffer = getenv("PERL_DPROF_BUFFER");
583a019e 749
750 if (buffer) {
146174a9 751 g_SAVE_STACK = atoi(buffer);
583a019e 752 }
753
754 buffer = getenv("PERL_DPROF_TICKS");
755
756 if (buffer) {
146174a9 757 g_dprof_ticks = atoi(buffer); /* Used under OS/2 only */
758 }
759 else {
760 g_dprof_ticks = HZ;
583a019e 761 }
583a019e 762
146174a9 763 buffer = getenv("PERL_DPROF_OUT_FILE_NAME");
764 g_out_file_name = savepv(buffer ? buffer : "tmon.out");
765 }
583a019e 766
146174a9 767 if ((g_fp = PerlIO_open(g_out_file_name, "w")) == NULL)
768 croak("DProf: unable to write '%s', errno = %d\n",
769 g_out_file_name, errno);
583a019e 770
146174a9 771 g_default_perldb = PERLDBf_NONAME | PERLDBf_SUB | PERLDBf_GOTO;
772 g_cv_hash = newHV();
7619c85e 773 g_key_hash = newSV(256);
146174a9 774 g_prof_pid = (int)getpid();
583a019e 775
a02a5408 776 Newx(g_profstack, g_profstack_max, PROFANY);
146174a9 777 prof_recordheader(aTHX);
583a019e 778 DBG_TIMER_NOTIFY("Profiler timer is on.\n");
146174a9 779 g_orealtime = g_rprof_start = Times(&g_prof_start);
780 g_otms_utime = g_prof_start.tms_utime;
781 g_otms_stime = g_prof_start.tms_stime;
782 PL_perldb = g_default_perldb;
783 }
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