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1 | #define PERL_NO_GET_CONTEXT |
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2 | #include "EXTERN.h" |
3 | #include "perl.h" |
4 | #include "XSUB.h" |
5 | |
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6 | SV * |
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7 | DeadCode(pTHX) |
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8 | { |
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9 | #ifdef PURIFY |
10 | return Nullsv; |
11 | #else |
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12 | SV* sva; |
13 | SV* sv, *dbg; |
14 | SV* ret = newRV_noinc((SV*)newAV()); |
15 | register SV* svend; |
16 | int tm = 0, tref = 0, ts = 0, ta = 0, tas = 0; |
17 | |
18 | for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
19 | svend = &sva[SvREFCNT(sva)]; |
20 | for (sv = sva + 1; sv < svend; ++sv) { |
21 | if (SvTYPE(sv) == SVt_PVCV) { |
22 | CV *cv = (CV*)sv; |
23 | AV* padlist = CvPADLIST(cv), *argav; |
24 | SV** svp; |
25 | SV** pad; |
26 | int i = 0, j, levelm, totm = 0, levelref, totref = 0; |
27 | int levels, tots = 0, levela, tota = 0, levelas, totas = 0; |
28 | int dumpit = 0; |
29 | |
30 | if (CvXSUB(sv)) { |
31 | continue; /* XSUB */ |
32 | } |
33 | if (!CvGV(sv)) { |
34 | continue; /* file-level scope. */ |
35 | } |
36 | if (!CvROOT(cv)) { |
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37 | /* PerlIO_printf(Perl_debug_log, " no root?!\n"); */ |
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38 | continue; /* autoloading stub. */ |
39 | } |
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40 | do_gvgv_dump(0, Perl_debug_log, "GVGV::GV", CvGV(sv)); |
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41 | if (CvDEPTH(cv)) { |
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42 | PerlIO_printf(Perl_debug_log, " busy\n"); |
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43 | continue; |
44 | } |
45 | svp = AvARRAY(padlist); |
46 | while (++i <= AvFILL(padlist)) { /* Depth. */ |
47 | SV **args; |
48 | |
49 | pad = AvARRAY((AV*)svp[i]); |
50 | argav = (AV*)pad[0]; |
51 | if (!argav || (SV*)argav == &PL_sv_undef) { |
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52 | PerlIO_printf(Perl_debug_log, " closure-template\n"); |
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53 | continue; |
54 | } |
55 | args = AvARRAY(argav); |
56 | levelm = levels = levelref = levelas = 0; |
57 | levela = sizeof(SV*) * (AvMAX(argav) + 1); |
58 | if (AvREAL(argav)) { |
59 | for (j = 0; j < AvFILL(argav); j++) { |
60 | if (SvROK(args[j])) { |
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61 | PerlIO_printf(Perl_debug_log, " ref in args!\n"); |
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62 | levelref++; |
63 | } |
64 | /* else if (SvPOK(args[j]) && SvPVX(args[j])) { */ |
65 | else if (SvTYPE(args[j]) >= SVt_PV && SvLEN(args[j])) { |
66 | levelas += SvLEN(args[j])/SvREFCNT(args[j]); |
67 | } |
68 | } |
69 | } |
70 | for (j = 1; j < AvFILL((AV*)svp[1]); j++) { /* Vars. */ |
71 | if (SvROK(pad[j])) { |
72 | levelref++; |
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73 | do_sv_dump(0, Perl_debug_log, pad[j], 0, 4, 0, 0); |
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74 | dumpit = 1; |
75 | } |
76 | /* else if (SvPOK(pad[j]) && SvPVX(pad[j])) { */ |
77 | else if (SvTYPE(pad[j]) >= SVt_PVAV) { |
78 | if (!SvPADMY(pad[j])) { |
79 | levelref++; |
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80 | do_sv_dump(0, Perl_debug_log, pad[j], 0, 4, 0, 0); |
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81 | dumpit = 1; |
82 | } |
83 | } |
84 | else if (SvTYPE(pad[j]) >= SVt_PV && SvLEN(pad[j])) { |
85 | int db_len = SvLEN(pad[j]); |
86 | SV *db_sv = pad[j]; |
87 | levels++; |
88 | levelm += SvLEN(pad[j])/SvREFCNT(pad[j]); |
89 | /* Dump(pad[j],4); */ |
90 | } |
91 | } |
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92 | PerlIO_printf(Perl_debug_log, " level %i: refs: %i, strings: %i in %i,\targsarray: %i, argsstrings: %i\n", |
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93 | i, levelref, levelm, levels, levela, levelas); |
94 | totm += levelm; |
95 | tota += levela; |
96 | totas += levelas; |
97 | tots += levels; |
98 | totref += levelref; |
99 | if (dumpit) |
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100 | do_sv_dump(0, Perl_debug_log, (SV*)cv, 0, 2, 0, 0); |
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101 | } |
102 | if (AvFILL(padlist) > 1) { |
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103 | PerlIO_printf(Perl_debug_log, " total: refs: %i, strings: %i in %i,\targsarrays: %i, argsstrings: %i\n", |
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104 | totref, totm, tots, tota, totas); |
105 | } |
106 | tref += totref; |
107 | tm += totm; |
108 | ts += tots; |
109 | ta += tota; |
110 | tas += totas; |
111 | } |
112 | } |
113 | } |
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114 | PerlIO_printf(Perl_debug_log, "total: refs: %i, strings: %i in %i\targsarray: %i, argsstrings: %i\n", tref, tm, ts, ta, tas); |
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115 | |
116 | return ret; |
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117 | #endif /* !PURIFY */ |
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118 | } |
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119 | |
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120 | #if defined(PERL_DEBUGGING_MSTATS) || defined(DEBUGGING_MSTATS) \ |
121 | || (defined(MYMALLOC) && !defined(PLAIN_MALLOC)) |
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122 | # define mstat(str) dump_mstats(str) |
123 | #else |
124 | # define mstat(str) \ |
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125 | PerlIO_printf(Perl_debug_log, "%s: perl not compiled with DEBUGGING_MSTATS\n",str); |
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126 | #endif |
127 | |
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128 | #if defined(PERL_DEBUGGING_MSTATS) || defined(DEBUGGING_MSTATS) \ |
129 | || (defined(MYMALLOC) && !defined(PLAIN_MALLOC)) |
130 | |
131 | /* Very coarse overestimate, 2-per-power-of-2, one more to determine NBUCKETS. */ |
132 | # define _NBUCKETS (2*8*IVSIZE+1) |
133 | |
134 | struct mstats_buffer |
135 | { |
136 | perl_mstats_t buffer; |
137 | UV buf[_NBUCKETS*4]; |
138 | }; |
139 | |
140 | void |
141 | _fill_mstats(struct mstats_buffer *b, int level) |
142 | { |
143 | b->buffer.nfree = b->buf; |
144 | b->buffer.ntotal = b->buf + _NBUCKETS; |
145 | b->buffer.bucket_mem_size = b->buf + 2*_NBUCKETS; |
146 | b->buffer.bucket_available_size = b->buf + 3*_NBUCKETS; |
147 | Zero(b->buf, (level ? 4*_NBUCKETS: 2*_NBUCKETS), unsigned long); |
148 | get_mstats(&(b->buffer), _NBUCKETS, level); |
149 | } |
150 | |
151 | void |
152 | fill_mstats(SV *sv, int level) |
153 | { |
154 | int nbuckets; |
155 | struct mstats_buffer buf; |
156 | |
157 | if (SvREADONLY(sv)) |
158 | croak("Cannot modify a readonly value"); |
159 | SvGROW(sv, sizeof(struct mstats_buffer)+1); |
160 | _fill_mstats((struct mstats_buffer*)SvPVX(sv),level); |
161 | SvCUR_set(sv, sizeof(struct mstats_buffer)); |
162 | *SvEND(sv) = '\0'; |
163 | SvPOK_only(sv); |
164 | } |
165 | |
166 | void |
167 | _mstats_to_hv(HV *hv, struct mstats_buffer *b, int level) |
168 | { |
169 | SV **svp; |
170 | int type; |
171 | |
172 | svp = hv_fetch(hv, "topbucket", 9, 1); |
173 | sv_setiv(*svp, b->buffer.topbucket); |
174 | |
175 | svp = hv_fetch(hv, "topbucket_ev", 12, 1); |
176 | sv_setiv(*svp, b->buffer.topbucket_ev); |
177 | |
178 | svp = hv_fetch(hv, "topbucket_odd", 13, 1); |
179 | sv_setiv(*svp, b->buffer.topbucket_odd); |
180 | |
181 | svp = hv_fetch(hv, "totfree", 7, 1); |
182 | sv_setiv(*svp, b->buffer.totfree); |
183 | |
184 | svp = hv_fetch(hv, "total", 5, 1); |
185 | sv_setiv(*svp, b->buffer.total); |
186 | |
187 | svp = hv_fetch(hv, "total_chain", 11, 1); |
188 | sv_setiv(*svp, b->buffer.total_chain); |
189 | |
190 | svp = hv_fetch(hv, "total_sbrk", 10, 1); |
191 | sv_setiv(*svp, b->buffer.total_sbrk); |
192 | |
193 | svp = hv_fetch(hv, "sbrks", 5, 1); |
194 | sv_setiv(*svp, b->buffer.sbrks); |
195 | |
196 | svp = hv_fetch(hv, "sbrk_good", 9, 1); |
197 | sv_setiv(*svp, b->buffer.sbrk_good); |
198 | |
199 | svp = hv_fetch(hv, "sbrk_slack", 10, 1); |
200 | sv_setiv(*svp, b->buffer.sbrk_slack); |
201 | |
202 | svp = hv_fetch(hv, "start_slack", 11, 1); |
203 | sv_setiv(*svp, b->buffer.start_slack); |
204 | |
205 | svp = hv_fetch(hv, "sbrked_remains", 14, 1); |
206 | sv_setiv(*svp, b->buffer.sbrked_remains); |
207 | |
208 | svp = hv_fetch(hv, "minbucket", 9, 1); |
209 | sv_setiv(*svp, b->buffer.minbucket); |
210 | |
211 | svp = hv_fetch(hv, "nbuckets", 8, 1); |
212 | sv_setiv(*svp, b->buffer.nbuckets); |
213 | |
214 | if (_NBUCKETS < b->buffer.nbuckets) |
215 | warn("FIXME: internal mstats buffer too short"); |
216 | |
217 | for (type = 0; type < (level ? 4 : 2); type++) { |
218 | UV *p, *p1; |
219 | AV *av; |
220 | int i; |
221 | static const char *types[4] = { |
222 | "free", "used", "mem_size", "available_size" |
223 | }; |
224 | |
225 | svp = hv_fetch(hv, types[type], strlen(types[type]), 1); |
226 | |
227 | if (SvOK(*svp) && !(SvROK(*svp) && SvTYPE(SvRV(*svp)) == SVt_PVAV)) |
228 | croak("Unexpected value for the key '%s' in the mstats hash", types[type]); |
229 | if (!SvOK(*svp)) { |
230 | av = newAV(); |
231 | SvUPGRADE(*svp, SVt_RV); |
232 | SvRV(*svp) = (SV*)av; |
233 | SvROK_on(*svp); |
234 | } else |
235 | av = (AV*)SvRV(*svp); |
236 | |
237 | av_extend(av, b->buffer.nbuckets - 1); |
238 | /* XXXX What is the official way to reduce the size of the array? */ |
239 | switch (type) { |
240 | case 0: |
241 | p = b->buffer.nfree; |
242 | break; |
243 | case 1: |
244 | p = b->buffer.ntotal; |
245 | p1 = b->buffer.nfree; |
246 | break; |
247 | case 2: |
248 | p = b->buffer.bucket_mem_size; |
249 | break; |
250 | case 3: |
251 | p = b->buffer.bucket_available_size; |
252 | break; |
253 | } |
254 | for (i = 0; i < b->buffer.nbuckets; i++) { |
255 | svp = av_fetch(av, i, 1); |
256 | if (type == 1) |
257 | sv_setiv(*svp, p[i]-p1[i]); |
258 | else |
259 | sv_setuv(*svp, p[i]); |
260 | } |
261 | } |
262 | } |
263 | void |
264 | mstats_fillhash(SV *sv, int level) |
265 | { |
266 | struct mstats_buffer buf; |
267 | |
268 | if (!(SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVHV)) |
269 | croak("Not a hash reference"); |
270 | _fill_mstats(&buf, level); |
271 | _mstats_to_hv((HV *)SvRV(sv), &buf, level); |
272 | } |
273 | void |
274 | mstats2hash(SV *sv, SV *rv, int level) |
275 | { |
276 | if (!(SvROK(rv) && SvTYPE(SvRV(rv)) == SVt_PVHV)) |
277 | croak("Not a hash reference"); |
278 | if (!SvPOK(sv)) |
279 | croak("Undefined value when expecting mstats buffer"); |
280 | if (SvCUR(sv) != sizeof(struct mstats_buffer)) |
281 | croak("Wrong size for a value with a mstats buffer"); |
282 | _mstats_to_hv((HV *)SvRV(rv), (struct mstats_buffer*)SvPVX(sv), level); |
283 | } |
284 | #else /* !( defined(PERL_DEBUGGING_MSTATS) || defined(DEBUGGING_MSTATS) \ ) */ |
285 | void |
286 | fill_mstats(SV *sv, int level) |
287 | { |
288 | croak("Cannot report mstats without Perl malloc"); |
289 | } |
290 | void |
291 | mstats_fillhash(SV *sv, int level) |
292 | { |
293 | croak("Cannot report mstats without Perl malloc"); |
294 | } |
295 | void |
296 | mstats2hash(SV *sv, SV *rv, int level) |
297 | { |
298 | croak("Cannot report mstats without Perl malloc"); |
299 | } |
300 | #endif /* defined(PERL_DEBUGGING_MSTATS) || defined(DEBUGGING_MSTATS)... */ |
301 | |
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302 | #define _CvGV(cv) \ |
303 | (SvROK(cv) && (SvTYPE(SvRV(cv))==SVt_PVCV) \ |
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304 | ? SvREFCNT_inc(CvGV((CV*)SvRV(cv))) : &PL_sv_undef) |
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305 | |
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306 | MODULE = Devel::Peek PACKAGE = Devel::Peek |
307 | |
308 | void |
309 | mstat(str="Devel::Peek::mstat: ") |
310 | char *str |
311 | |
312 | void |
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313 | fill_mstats(SV *sv, int level = 0) |
314 | |
315 | void |
316 | mstats_fillhash(SV *sv, int level = 0) |
317 | PROTOTYPE: \%;$ |
318 | |
319 | void |
320 | mstats2hash(SV *sv, SV *rv, int level = 0) |
321 | PROTOTYPE: $\%;$ |
322 | |
323 | void |
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324 | Dump(sv,lim=4) |
325 | SV * sv |
326 | I32 lim |
327 | PPCODE: |
328 | { |
329 | SV *pv_lim_sv = perl_get_sv("Devel::Peek::pv_limit", FALSE); |
330 | STRLEN pv_lim = pv_lim_sv ? SvIV(pv_lim_sv) : 0; |
331 | SV *dumpop = perl_get_sv("Devel::Peek::dump_ops", FALSE); |
332 | I32 save_dumpindent = PL_dumpindent; |
333 | PL_dumpindent = 2; |
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334 | do_sv_dump(0, Perl_debug_log, sv, 0, lim, dumpop && SvTRUE(dumpop), pv_lim); |
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335 | PL_dumpindent = save_dumpindent; |
336 | } |
337 | |
338 | void |
339 | DumpArray(lim,...) |
340 | I32 lim |
341 | PPCODE: |
342 | { |
343 | long i; |
344 | SV *pv_lim_sv = perl_get_sv("Devel::Peek::pv_limit", FALSE); |
345 | STRLEN pv_lim = pv_lim_sv ? SvIV(pv_lim_sv) : 0; |
346 | SV *dumpop = perl_get_sv("Devel::Peek::dump_ops", FALSE); |
347 | I32 save_dumpindent = PL_dumpindent; |
348 | PL_dumpindent = 2; |
349 | |
350 | for (i=1; i<items; i++) { |
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351 | PerlIO_printf(Perl_debug_log, "Elt No. %ld 0x%"UVxf"\n", i - 1, PTR2UV(ST(i))); |
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352 | do_sv_dump(0, Perl_debug_log, ST(i), 0, lim, dumpop && SvTRUE(dumpop), pv_lim); |
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353 | } |
354 | PL_dumpindent = save_dumpindent; |
355 | } |
356 | |
357 | void |
358 | DumpProg() |
359 | PPCODE: |
360 | { |
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361 | warn("dumpindent is %d", (int)PL_dumpindent); |
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362 | if (PL_main_root) |
363 | op_dump(PL_main_root); |
364 | } |
365 | |
366 | I32 |
367 | SvREFCNT(sv) |
368 | SV * sv |
369 | |
370 | # PPCODE needed since otherwise sv_2mortal is inserted that will kill the value. |
371 | |
372 | SV * |
373 | SvREFCNT_inc(sv) |
374 | SV * sv |
375 | PPCODE: |
376 | { |
377 | RETVAL = SvREFCNT_inc(sv); |
378 | PUSHs(RETVAL); |
379 | } |
380 | |
381 | # PPCODE needed since by default it is void |
382 | |
383 | SV * |
384 | SvREFCNT_dec(sv) |
385 | SV * sv |
386 | PPCODE: |
387 | { |
388 | SvREFCNT_dec(sv); |
389 | PUSHs(sv); |
390 | } |
391 | |
392 | SV * |
393 | DeadCode() |
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394 | CODE: |
395 | RETVAL = DeadCode(aTHX); |
396 | OUTPUT: |
397 | RETVAL |
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398 | |
399 | MODULE = Devel::Peek PACKAGE = Devel::Peek PREFIX = _ |
400 | |
401 | SV * |
402 | _CvGV(cv) |
403 | SV *cv |