Commit | Line | Data |
265a0548 |
1 | #define PERL_NO_GET_CONTEXT |
2 | |
e98cedbf |
3 | #include "EXTERN.h" |
4 | #include "perl.h" |
5 | #include "XSUB.h" |
2eb93d08 |
6 | #include "ppport.h" |
e98cedbf |
7 | |
87372f42 |
8 | /* Not yet in ppport.h */ |
9 | #ifndef CvISXSUB |
10 | # define CvISXSUB(cv) (CvXSUB(cv) ? TRUE : FALSE) |
11 | #endif |
0e1f978f |
12 | #ifndef SvRV_const |
13 | # define SvRV_const(rv) SvRV(rv) |
14 | #endif |
87372f42 |
15 | |
9fc9ab86 |
16 | #ifdef _MSC_VER |
1a36ac09 |
17 | /* "structured exception" handling is a Microsoft extension to C and C++. |
18 | It's *not* C++ exception handling - C++ exception handling can't capture |
19 | SEGVs and suchlike, whereas this can. There's no known analagous |
20 | functionality on other platforms. */ |
21 | # include <excpt.h> |
22 | # define TRY_TO_CATCH_SEGV __try |
23 | # define CAUGHT_EXCEPTION __except(EXCEPTION EXCEPTION_EXECUTE_HANDLER) |
9fc9ab86 |
24 | #else |
1a36ac09 |
25 | # define TRY_TO_CATCH_SEGV if(1) |
26 | # define CAUGHT_EXCEPTION else |
9fc9ab86 |
27 | #endif |
28 | |
29 | #ifdef __GNUC__ |
30 | # define __attribute__(x) |
31 | #endif |
32 | |
b7621729 |
33 | #if 0 && defined(DEBUGGING) |
34 | #define dbg_printf(x) printf x |
35 | #else |
36 | #define dbg_printf(x) |
37 | #endif |
98ecbbc6 |
38 | |
0964064b |
39 | #define TAG /* printf( "# %s(%d)\n", __FILE__, __LINE__ ) */ |
6a9ad7ec |
40 | #define carp puts |
9fc9ab86 |
41 | |
30fe4f47 |
42 | /* The idea is to have a tree structure to store 1 bit per possible pointer |
43 | address. The lowest 16 bits are stored in a block of 8092 bytes. |
44 | The blocks are in a 256-way tree, indexed by the reset of the pointer. |
45 | This can cope with 32 and 64 bit pointers, and any address space layout, |
46 | without excessive memory needs. The assumption is that your CPU cache |
47 | works :-) (And that we're not going to bust it) */ |
48 | |
9fc9ab86 |
49 | #define ALIGN_BITS ( sizeof(void*) >> 1 ) |
30fe4f47 |
50 | #define BYTE_BITS 3 |
51 | #define LEAF_BITS (16 - BYTE_BITS) |
52 | #define LEAF_MASK 0x1FFF |
9fc9ab86 |
53 | |
65db36c0 |
54 | struct state { |
eee00145 |
55 | UV total_size; |
65db36c0 |
56 | bool regex_whine; |
57 | bool fm_whine; |
58 | bool dangle_whine; |
59 | bool go_yell; |
60 | /* My hunch (not measured) is that for most architectures pointers will |
61 | start with 0 bits, hence the start of this array will be hot, and the |
62 | end unused. So put the flags next to the hot end. */ |
63 | void *tracking[256]; |
64 | }; |
65 | |
9fc9ab86 |
66 | /* |
67 | Checks to see if thing is in the bitstring. |
68 | Returns true or false, and |
69 | notes thing in the segmented bitstring. |
70 | */ |
2eb93d08 |
71 | static bool |
a4efdff3 |
72 | check_new(struct state *st, const void *const p) { |
30fe4f47 |
73 | unsigned int bits = 8 * sizeof(void*); |
74 | const size_t raw_p = PTR2nat(p); |
75 | /* This effectively rotates the value right by the number of low always-0 |
76 | bits in an aligned pointer. The assmption is that most (if not all) |
77 | pointers are aligned, and these will be in the same chain of nodes |
78 | (and hence hot in the cache) but we can still deal with any unaligned |
79 | pointers. */ |
80 | const size_t cooked_p |
81 | = (raw_p >> ALIGN_BITS) | (raw_p << (bits - BYTE_BITS)); |
82 | const U8 this_bit = 1 << (cooked_p & 0x7); |
83 | U8 **leaf_p; |
84 | U8 *leaf; |
85 | unsigned int i; |
302077b6 |
86 | void **tv_p = (void **) (st->tracking); |
30fe4f47 |
87 | |
302077b6 |
88 | if (NULL == p) return FALSE; |
1a36ac09 |
89 | TRY_TO_CATCH_SEGV { |
2eb93d08 |
90 | const char c = *(const char *)p; |
9fc9ab86 |
91 | } |
1a36ac09 |
92 | CAUGHT_EXCEPTION { |
a4efdff3 |
93 | if (st->dangle_whine) |
9fc9ab86 |
94 | warn( "Devel::Size: Encountered invalid pointer: %p\n", p ); |
95 | return FALSE; |
96 | } |
9fc9ab86 |
97 | TAG; |
30fe4f47 |
98 | |
99 | bits -= 8; |
100 | /* bits now 24 (32 bit pointers) or 56 (64 bit pointers) */ |
101 | |
102 | /* First level is always present. */ |
103 | do { |
104 | i = (unsigned int)((cooked_p >> bits) & 0xFF); |
105 | if (!tv_p[i]) |
106 | Newxz(tv_p[i], 256, void *); |
107 | tv_p = (void **)(tv_p[i]); |
108 | bits -= 8; |
109 | } while (bits > LEAF_BITS + BYTE_BITS); |
110 | /* bits now 16 always */ |
5f04c81d |
111 | #if !defined(MULTIPLICITY) || PERL_VERSION > 8 || (PERL_VERSION == 8 && PERL_SUBVERSION > 8) |
112 | /* 5.8.8 and early have an assert() macro that uses Perl_croak, hence needs |
113 | a my_perl under multiplicity */ |
30fe4f47 |
114 | assert(bits == 16); |
5f04c81d |
115 | #endif |
30fe4f47 |
116 | leaf_p = (U8 **)tv_p; |
117 | i = (unsigned int)((cooked_p >> bits) & 0xFF); |
118 | if (!leaf_p[i]) |
119 | Newxz(leaf_p[i], 1 << LEAF_BITS, U8); |
120 | leaf = leaf_p[i]; |
121 | |
9fc9ab86 |
122 | TAG; |
30fe4f47 |
123 | |
124 | i = (unsigned int)((cooked_p >> BYTE_BITS) & LEAF_MASK); |
125 | |
126 | if(leaf[i] & this_bit) |
127 | return FALSE; |
128 | |
129 | leaf[i] |= this_bit; |
9fc9ab86 |
130 | return TRUE; |
131 | } |
132 | |
e9716740 |
133 | static void |
30fe4f47 |
134 | free_tracking_at(void **tv, int level) |
135 | { |
136 | int i = 255; |
137 | |
138 | if (--level) { |
139 | /* Nodes */ |
140 | do { |
141 | if (tv[i]) { |
142 | free_tracking_at(tv[i], level); |
143 | Safefree(tv[i]); |
144 | } |
145 | } while (i--); |
146 | } else { |
147 | /* Leaves */ |
148 | do { |
149 | if (tv[i]) |
150 | Safefree(tv[i]); |
151 | } while (i--); |
152 | } |
153 | } |
154 | |
155 | static void |
a4efdff3 |
156 | free_state(struct state *st) |
e9716740 |
157 | { |
30fe4f47 |
158 | const int top_level = (sizeof(void *) * 8 - LEAF_BITS - BYTE_BITS) / 8; |
a4efdff3 |
159 | free_tracking_at((void **)st->tracking, top_level); |
160 | Safefree(st); |
e9716740 |
161 | } |
162 | |
f3cf7e20 |
163 | /* For now, this is somewhat a compatibility bodge until the plan comes |
164 | together for fine grained recursion control. total_size() would recurse into |
165 | hash and array members, whereas sv_size() would not. However, sv_size() is |
166 | called with CvSTASH() of a CV, which means that if it (also) starts to |
167 | recurse fully, then the size of any CV now becomes the size of the entire |
168 | symbol table reachable from it, and potentially the entire symbol table, if |
169 | any subroutine makes a reference to a global (such as %SIG). The historical |
170 | implementation of total_size() didn't report "everything", and changing the |
171 | only available size to "everything" doesn't feel at all useful. */ |
172 | |
173 | #define NO_RECURSION 0 |
174 | #define SOME_RECURSION 1 |
175 | #define TOTAL_SIZE_RECURSION 2 |
176 | |
177 | static bool sv_size(pTHX_ struct state *, const SV *const, const int recurse); |
db519f11 |
178 | |
7ccc7d88 |
179 | typedef enum { |
9fc9ab86 |
180 | OPc_NULL, /* 0 */ |
181 | OPc_BASEOP, /* 1 */ |
182 | OPc_UNOP, /* 2 */ |
183 | OPc_BINOP, /* 3 */ |
184 | OPc_LOGOP, /* 4 */ |
185 | OPc_LISTOP, /* 5 */ |
186 | OPc_PMOP, /* 6 */ |
187 | OPc_SVOP, /* 7 */ |
188 | OPc_PADOP, /* 8 */ |
189 | OPc_PVOP, /* 9 */ |
190 | OPc_LOOP, /* 10 */ |
191 | OPc_COP /* 11 */ |
7ccc7d88 |
192 | } opclass; |
193 | |
194 | static opclass |
9fc9ab86 |
195 | cc_opclass(const OP * const o) |
7ccc7d88 |
196 | { |
197 | if (!o) |
9fc9ab86 |
198 | return OPc_NULL; |
1a36ac09 |
199 | TRY_TO_CATCH_SEGV { |
9fc9ab86 |
200 | if (o->op_type == 0) |
201 | return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP; |
7ccc7d88 |
202 | |
9fc9ab86 |
203 | if (o->op_type == OP_SASSIGN) |
204 | return ((o->op_private & OPpASSIGN_BACKWARDS) ? OPc_UNOP : OPc_BINOP); |
7ccc7d88 |
205 | |
9fc9ab86 |
206 | #ifdef USE_ITHREADS |
207 | if (o->op_type == OP_GV || o->op_type == OP_GVSV || o->op_type == OP_AELEMFAST) |
208 | return OPc_PADOP; |
209 | #endif |
7ccc7d88 |
210 | |
9fc9ab86 |
211 | if ((o->op_type == OP_TRANS)) { |
212 | return OPc_BASEOP; |
213 | } |
7ccc7d88 |
214 | |
9fc9ab86 |
215 | switch (PL_opargs[o->op_type] & OA_CLASS_MASK) { |
216 | case OA_BASEOP: TAG; |
217 | return OPc_BASEOP; |
218 | |
219 | case OA_UNOP: TAG; |
220 | return OPc_UNOP; |
221 | |
222 | case OA_BINOP: TAG; |
223 | return OPc_BINOP; |
62691e7c |
224 | |
9fc9ab86 |
225 | case OA_LOGOP: TAG; |
226 | return OPc_LOGOP; |
7ccc7d88 |
227 | |
9fc9ab86 |
228 | case OA_LISTOP: TAG; |
229 | return OPc_LISTOP; |
7ccc7d88 |
230 | |
9fc9ab86 |
231 | case OA_PMOP: TAG; |
232 | return OPc_PMOP; |
7ccc7d88 |
233 | |
9fc9ab86 |
234 | case OA_SVOP: TAG; |
235 | return OPc_SVOP; |
7ccc7d88 |
236 | |
9fc9ab86 |
237 | case OA_PADOP: TAG; |
238 | return OPc_PADOP; |
7ccc7d88 |
239 | |
9fc9ab86 |
240 | case OA_PVOP_OR_SVOP: TAG; |
241 | /* |
242 | * Character translations (tr///) are usually a PVOP, keeping a |
243 | * pointer to a table of shorts used to look up translations. |
244 | * Under utf8, however, a simple table isn't practical; instead, |
245 | * the OP is an SVOP, and the SV is a reference to a swash |
246 | * (i.e., an RV pointing to an HV). |
247 | */ |
248 | return (o->op_private & (OPpTRANS_TO_UTF|OPpTRANS_FROM_UTF)) |
249 | ? OPc_SVOP : OPc_PVOP; |
7ccc7d88 |
250 | |
9fc9ab86 |
251 | case OA_LOOP: TAG; |
252 | return OPc_LOOP; |
7ccc7d88 |
253 | |
9fc9ab86 |
254 | case OA_COP: TAG; |
255 | return OPc_COP; |
7ccc7d88 |
256 | |
9fc9ab86 |
257 | case OA_BASEOP_OR_UNOP: TAG; |
7ccc7d88 |
258 | /* |
9fc9ab86 |
259 | * UNI(OP_foo) in toke.c returns token UNI or FUNC1 depending on |
260 | * whether parens were seen. perly.y uses OPf_SPECIAL to |
261 | * signal whether a BASEOP had empty parens or none. |
262 | * Some other UNOPs are created later, though, so the best |
263 | * test is OPf_KIDS, which is set in newUNOP. |
7ccc7d88 |
264 | */ |
9fc9ab86 |
265 | return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP; |
266 | |
267 | case OA_FILESTATOP: TAG; |
268 | /* |
269 | * The file stat OPs are created via UNI(OP_foo) in toke.c but use |
270 | * the OPf_REF flag to distinguish between OP types instead of the |
271 | * usual OPf_SPECIAL flag. As usual, if OPf_KIDS is set, then we |
272 | * return OPc_UNOP so that walkoptree can find our children. If |
273 | * OPf_KIDS is not set then we check OPf_REF. Without OPf_REF set |
274 | * (no argument to the operator) it's an OP; with OPf_REF set it's |
275 | * an SVOP (and op_sv is the GV for the filehandle argument). |
276 | */ |
277 | return ((o->op_flags & OPf_KIDS) ? OPc_UNOP : |
278 | #ifdef USE_ITHREADS |
279 | (o->op_flags & OPf_REF) ? OPc_PADOP : OPc_BASEOP); |
280 | #else |
281 | (o->op_flags & OPf_REF) ? OPc_SVOP : OPc_BASEOP); |
282 | #endif |
283 | case OA_LOOPEXOP: TAG; |
284 | /* |
285 | * next, last, redo, dump and goto use OPf_SPECIAL to indicate that a |
286 | * label was omitted (in which case it's a BASEOP) or else a term was |
287 | * seen. In this last case, all except goto are definitely PVOP but |
288 | * goto is either a PVOP (with an ordinary constant label), an UNOP |
289 | * with OPf_STACKED (with a non-constant non-sub) or an UNOP for |
290 | * OP_REFGEN (with goto &sub) in which case OPf_STACKED also seems to |
291 | * get set. |
292 | */ |
293 | if (o->op_flags & OPf_STACKED) |
294 | return OPc_UNOP; |
295 | else if (o->op_flags & OPf_SPECIAL) |
296 | return OPc_BASEOP; |
297 | else |
298 | return OPc_PVOP; |
299 | } |
300 | warn("Devel::Size: Can't determine class of operator %s, assuming BASEOP\n", |
301 | PL_op_name[o->op_type]); |
302 | } |
1a36ac09 |
303 | CAUGHT_EXCEPTION { } |
7ccc7d88 |
304 | return OPc_BASEOP; |
305 | } |
306 | |
6a9ad7ec |
307 | |
a6ea0805 |
308 | #if !defined(NV) |
309 | #define NV double |
310 | #endif |
311 | |
6a9ad7ec |
312 | /* Figure out how much magic is attached to the SV and return the |
313 | size */ |
eee00145 |
314 | static void |
315 | magic_size(const SV * const thing, struct state *st) { |
6a9ad7ec |
316 | MAGIC *magic_pointer; |
317 | |
318 | /* Is there any? */ |
319 | if (!SvMAGIC(thing)) { |
320 | /* No, bail */ |
eee00145 |
321 | return; |
6a9ad7ec |
322 | } |
323 | |
324 | /* Get the base magic pointer */ |
325 | magic_pointer = SvMAGIC(thing); |
326 | |
327 | /* Have we seen the magic pointer? */ |
e5c69bdd |
328 | while (check_new(st, magic_pointer)) { |
eee00145 |
329 | st->total_size += sizeof(MAGIC); |
6a9ad7ec |
330 | |
1a36ac09 |
331 | TRY_TO_CATCH_SEGV { |
9fc9ab86 |
332 | /* Have we seen the magic vtable? */ |
e5c69bdd |
333 | if (check_new(st, magic_pointer->mg_virtual)) { |
eee00145 |
334 | st->total_size += sizeof(MGVTBL); |
9fc9ab86 |
335 | } |
6a9ad7ec |
336 | |
0964064b |
337 | /* Get the next in the chain */ |
9fc9ab86 |
338 | magic_pointer = magic_pointer->mg_moremagic; |
339 | } |
1a36ac09 |
340 | CAUGHT_EXCEPTION { |
a4efdff3 |
341 | if (st->dangle_whine) |
9fc9ab86 |
342 | warn( "Devel::Size: Encountered bad magic at: %p\n", magic_pointer ); |
343 | } |
6a9ad7ec |
344 | } |
6a9ad7ec |
345 | } |
346 | |
eee00145 |
347 | static void |
99684fd4 |
348 | check_new_and_strlen(struct state *st, const char *const p) { |
349 | if(check_new(st, p)) |
6ec51ae0 |
350 | st->total_size += 1 + strlen(p); |
99684fd4 |
351 | } |
352 | |
353 | static void |
eee00145 |
354 | regex_size(const REGEXP * const baseregex, struct state *st) { |
c1bfd7da |
355 | if(!check_new(st, baseregex)) |
356 | return; |
eee00145 |
357 | st->total_size += sizeof(REGEXP); |
9fc9ab86 |
358 | #if (PERL_VERSION < 11) |
6ea94d90 |
359 | /* Note the size of the paren offset thing */ |
eee00145 |
360 | st->total_size += sizeof(I32) * baseregex->nparens * 2; |
361 | st->total_size += strlen(baseregex->precomp); |
6ea94d90 |
362 | #else |
eee00145 |
363 | st->total_size += sizeof(struct regexp); |
364 | st->total_size += sizeof(I32) * SvANY(baseregex)->nparens * 2; |
365 | /*st->total_size += strlen(SvANY(baseregex)->subbeg);*/ |
6ea94d90 |
366 | #endif |
a4efdff3 |
367 | if (st->go_yell && !st->regex_whine) { |
6ea94d90 |
368 | carp("Devel::Size: Calculated sizes for compiled regexes are incompatible, and probably always will be"); |
a4efdff3 |
369 | st->regex_whine = 1; |
98ecbbc6 |
370 | } |
7ccc7d88 |
371 | } |
372 | |
eee00145 |
373 | static void |
1e5a8ad2 |
374 | op_size(pTHX_ const OP * const baseop, struct state *st) |
375 | { |
376 | TRY_TO_CATCH_SEGV { |
377 | TAG; |
378 | if(!check_new(st, baseop)) |
379 | return; |
380 | TAG; |
381 | op_size(aTHX_ baseop->op_next, st); |
382 | TAG; |
383 | switch (cc_opclass(baseop)) { |
384 | case OPc_BASEOP: TAG; |
385 | st->total_size += sizeof(struct op); |
386 | TAG;break; |
387 | case OPc_UNOP: TAG; |
388 | st->total_size += sizeof(struct unop); |
389 | op_size(aTHX_ cUNOPx(baseop)->op_first, st); |
390 | TAG;break; |
391 | case OPc_BINOP: TAG; |
392 | st->total_size += sizeof(struct binop); |
393 | op_size(aTHX_ cBINOPx(baseop)->op_first, st); |
394 | op_size(aTHX_ cBINOPx(baseop)->op_last, st); |
395 | TAG;break; |
396 | case OPc_LOGOP: TAG; |
397 | st->total_size += sizeof(struct logop); |
398 | op_size(aTHX_ cBINOPx(baseop)->op_first, st); |
399 | op_size(aTHX_ cLOGOPx(baseop)->op_other, st); |
400 | TAG;break; |
401 | case OPc_LISTOP: TAG; |
402 | st->total_size += sizeof(struct listop); |
403 | op_size(aTHX_ cLISTOPx(baseop)->op_first, st); |
404 | op_size(aTHX_ cLISTOPx(baseop)->op_last, st); |
405 | TAG;break; |
406 | case OPc_PMOP: TAG; |
407 | st->total_size += sizeof(struct pmop); |
408 | op_size(aTHX_ cPMOPx(baseop)->op_first, st); |
409 | op_size(aTHX_ cPMOPx(baseop)->op_last, st); |
5a83b7cf |
410 | #if PERL_VERSION < 9 || (PERL_VERSION == 9 && PERL_SUBVERSION < 5) |
1e5a8ad2 |
411 | op_size(aTHX_ cPMOPx(baseop)->op_pmreplroot, st); |
412 | op_size(aTHX_ cPMOPx(baseop)->op_pmreplstart, st); |
413 | op_size(aTHX_ (OP *)cPMOPx(baseop)->op_pmnext, st); |
5a83b7cf |
414 | #endif |
c1bfd7da |
415 | /* This is defined away in perl 5.8.x, but it is in there for |
416 | 5.6.x */ |
98ecbbc6 |
417 | #ifdef PM_GETRE |
c1bfd7da |
418 | regex_size(PM_GETRE(cPMOPx(baseop)), st); |
98ecbbc6 |
419 | #else |
c1bfd7da |
420 | regex_size(cPMOPx(baseop)->op_pmregexp, st); |
98ecbbc6 |
421 | #endif |
c1bfd7da |
422 | TAG;break; |
81f1c018 |
423 | case OPc_SVOP: TAG; |
424 | st->total_size += sizeof(struct pmop); |
574d9fd9 |
425 | if (!(baseop->op_type == OP_AELEMFAST |
426 | && baseop->op_flags & OPf_SPECIAL)) { |
427 | /* not an OP_PADAV replacement */ |
f3cf7e20 |
428 | sv_size(aTHX_ st, cSVOPx(baseop)->op_sv, SOME_RECURSION); |
574d9fd9 |
429 | } |
81f1c018 |
430 | TAG;break; |
9fc9ab86 |
431 | case OPc_PADOP: TAG; |
eee00145 |
432 | st->total_size += sizeof(struct padop); |
99684fd4 |
433 | TAG;break; |
434 | case OPc_PVOP: TAG; |
435 | check_new_and_strlen(st, cPVOPx(baseop)->op_pv); |
219b7d34 |
436 | TAG;break; |
1e5a8ad2 |
437 | case OPc_LOOP: TAG; |
438 | st->total_size += sizeof(struct loop); |
439 | op_size(aTHX_ cLOOPx(baseop)->op_first, st); |
440 | op_size(aTHX_ cLOOPx(baseop)->op_last, st); |
441 | op_size(aTHX_ cLOOPx(baseop)->op_redoop, st); |
442 | op_size(aTHX_ cLOOPx(baseop)->op_nextop, st); |
443 | op_size(aTHX_ cLOOPx(baseop)->op_lastop, st); |
444 | TAG;break; |
445 | case OPc_COP: TAG; |
9fc9ab86 |
446 | { |
447 | COP *basecop; |
448 | basecop = (COP *)baseop; |
eee00145 |
449 | st->total_size += sizeof(struct cop); |
9fc9ab86 |
450 | |
451 | /* Change 33656 by nicholas@mouse-mill on 2008/04/07 11:29:51 |
452 | Eliminate cop_label from struct cop by storing a label as the first |
453 | entry in the hints hash. Most statements don't have labels, so this |
454 | will save memory. Not sure how much. |
455 | The check below will be incorrect fail on bleadperls |
456 | before 5.11 @33656, but later than 5.10, producing slightly too |
457 | small memory sizes on these Perls. */ |
b7621729 |
458 | #if (PERL_VERSION < 11) |
99684fd4 |
459 | check_new_and_strlen(st, basecop->cop_label); |
b7621729 |
460 | #endif |
7ccc7d88 |
461 | #ifdef USE_ITHREADS |
99684fd4 |
462 | check_new_and_strlen(st, basecop->cop_file); |
463 | check_new_and_strlen(st, basecop->cop_stashpv); |
7ccc7d88 |
464 | #else |
f3cf7e20 |
465 | sv_size(aTHX_ st, (SV *)basecop->cop_stash, SOME_RECURSION); |
466 | sv_size(aTHX_ st, (SV *)basecop->cop_filegv, SOME_RECURSION); |
7ccc7d88 |
467 | #endif |
468 | |
9fc9ab86 |
469 | } |
470 | TAG;break; |
471 | default: |
472 | TAG;break; |
473 | } |
474 | } |
1a36ac09 |
475 | CAUGHT_EXCEPTION { |
a4efdff3 |
476 | if (st->dangle_whine) |
9fc9ab86 |
477 | warn( "Devel::Size: Encountered dangling pointer in opcode at: %p\n", baseop ); |
7ccc7d88 |
478 | } |
7ccc7d88 |
479 | } |
6a9ad7ec |
480 | |
24d37977 |
481 | #if PERL_VERSION > 9 || (PERL_VERSION == 9 && PERL_SUBVERSION > 2) |
482 | # define NEW_HEAD_LAYOUT |
483 | #endif |
484 | |
81f1c018 |
485 | static bool |
db519f11 |
486 | sv_size(pTHX_ struct state *const st, const SV * const orig_thing, |
f3cf7e20 |
487 | const int recurse) { |
9fc9ab86 |
488 | const SV *thing = orig_thing; |
eee00145 |
489 | |
81f1c018 |
490 | if(!check_new(st, thing)) |
491 | return FALSE; |
492 | |
eee00145 |
493 | st->total_size += sizeof(SV); |
b1e5ad85 |
494 | |
e98cedbf |
495 | switch (SvTYPE(thing)) { |
496 | /* Is it undef? */ |
9fc9ab86 |
497 | case SVt_NULL: TAG; |
498 | TAG;break; |
e98cedbf |
499 | /* Just a plain integer. This will be differently sized depending |
500 | on whether purify's been compiled in */ |
9fc9ab86 |
501 | case SVt_IV: TAG; |
24d37977 |
502 | #ifndef NEW_HEAD_LAYOUT |
503 | # ifdef PURIFY |
eee00145 |
504 | st->total_size += sizeof(sizeof(XPVIV)); |
24d37977 |
505 | # else |
eee00145 |
506 | st->total_size += sizeof(IV); |
24d37977 |
507 | # endif |
e98cedbf |
508 | #endif |
81f1c018 |
509 | if(recurse && SvROK(thing)) |
f3cf7e20 |
510 | sv_size(aTHX_ st, SvRV_const(thing), recurse); |
9fc9ab86 |
511 | TAG;break; |
e98cedbf |
512 | /* Is it a float? Like the int, it depends on purify */ |
9fc9ab86 |
513 | case SVt_NV: TAG; |
e98cedbf |
514 | #ifdef PURIFY |
eee00145 |
515 | st->total_size += sizeof(sizeof(XPVNV)); |
e98cedbf |
516 | #else |
eee00145 |
517 | st->total_size += sizeof(NV); |
e98cedbf |
518 | #endif |
9fc9ab86 |
519 | TAG;break; |
520 | #if (PERL_VERSION < 11) |
e98cedbf |
521 | /* Is it a reference? */ |
9fc9ab86 |
522 | case SVt_RV: TAG; |
24d37977 |
523 | #ifndef NEW_HEAD_LAYOUT |
eee00145 |
524 | st->total_size += sizeof(XRV); |
24d37977 |
525 | #endif |
81f1c018 |
526 | if(recurse && SvROK(thing)) |
f3cf7e20 |
527 | sv_size(aTHX_ st, SvRV_const(thing), recurse); |
9fc9ab86 |
528 | TAG;break; |
6ea94d90 |
529 | #endif |
e98cedbf |
530 | /* How about a plain string? In which case we need to add in how |
531 | much has been allocated */ |
9fc9ab86 |
532 | case SVt_PV: TAG; |
eee00145 |
533 | st->total_size += sizeof(XPV); |
db519f11 |
534 | if(recurse && SvROK(thing)) |
f3cf7e20 |
535 | sv_size(aTHX_ st, SvRV_const(thing), recurse); |
eee00145 |
536 | else |
537 | st->total_size += SvLEN(thing); |
9fc9ab86 |
538 | TAG;break; |
e98cedbf |
539 | /* A string with an integer part? */ |
9fc9ab86 |
540 | case SVt_PVIV: TAG; |
eee00145 |
541 | st->total_size += sizeof(XPVIV); |
db519f11 |
542 | if(recurse && SvROK(thing)) |
f3cf7e20 |
543 | sv_size(aTHX_ st, SvRV_const(thing), recurse); |
eee00145 |
544 | else |
545 | st->total_size += SvLEN(thing); |
0430b7f7 |
546 | if(SvOOK(thing)) { |
eee00145 |
547 | st->total_size += SvIVX(thing); |
9fc9ab86 |
548 | } |
549 | TAG;break; |
c8db37d3 |
550 | /* A scalar/string/reference with a float part? */ |
9fc9ab86 |
551 | case SVt_PVNV: TAG; |
eee00145 |
552 | st->total_size += sizeof(XPVNV); |
db519f11 |
553 | if(recurse && SvROK(thing)) |
f3cf7e20 |
554 | sv_size(aTHX_ st, SvRV_const(thing), recurse); |
eee00145 |
555 | else |
556 | st->total_size += SvLEN(thing); |
9fc9ab86 |
557 | TAG;break; |
558 | case SVt_PVMG: TAG; |
eee00145 |
559 | st->total_size += sizeof(XPVMG); |
db519f11 |
560 | if(recurse && SvROK(thing)) |
f3cf7e20 |
561 | sv_size(aTHX_ st, SvRV_const(thing), recurse); |
eee00145 |
562 | else |
563 | st->total_size += SvLEN(thing); |
564 | magic_size(thing, st); |
9fc9ab86 |
565 | TAG;break; |
0430b7f7 |
566 | #if PERL_VERSION <= 8 |
9fc9ab86 |
567 | case SVt_PVBM: TAG; |
eee00145 |
568 | st->total_size += sizeof(XPVBM); |
db519f11 |
569 | if(recurse && SvROK(thing)) |
f3cf7e20 |
570 | sv_size(aTHX_ st, SvRV_const(thing), recurse); |
eee00145 |
571 | else |
572 | st->total_size += SvLEN(thing); |
573 | magic_size(thing, st); |
9fc9ab86 |
574 | TAG;break; |
0430b7f7 |
575 | #endif |
9fc9ab86 |
576 | case SVt_PVLV: TAG; |
eee00145 |
577 | st->total_size += sizeof(XPVLV); |
db519f11 |
578 | if(recurse && SvROK(thing)) |
f3cf7e20 |
579 | sv_size(aTHX_ st, SvRV_const(thing), recurse); |
eee00145 |
580 | else |
581 | st->total_size += SvLEN(thing); |
582 | magic_size(thing, st); |
9fc9ab86 |
583 | TAG;break; |
e98cedbf |
584 | /* How much space is dedicated to the array? Not counting the |
585 | elements in the array, mind, just the array itself */ |
9fc9ab86 |
586 | case SVt_PVAV: TAG; |
eee00145 |
587 | st->total_size += sizeof(XPVAV); |
e98cedbf |
588 | /* Is there anything in the array? */ |
589 | if (AvMAX(thing) != -1) { |
c8db37d3 |
590 | /* an array with 10 slots has AvMax() set to 9 - te 2007-04-22 */ |
eee00145 |
591 | st->total_size += sizeof(SV *) * (AvMAX(thing) + 1); |
592 | dbg_printf(("total_size: %li AvMAX: %li av_len: $i\n", st->total_size, AvMAX(thing), av_len((AV*)thing))); |
e98cedbf |
593 | } |
594 | /* Add in the bits on the other side of the beginning */ |
0430b7f7 |
595 | |
b7621729 |
596 | dbg_printf(("total_size %li, sizeof(SV *) %li, AvARRAY(thing) %li, AvALLOC(thing)%li , sizeof(ptr) %li \n", |
eee00145 |
597 | st->total_size, sizeof(SV*), AvARRAY(thing), AvALLOC(thing), sizeof( thing ))); |
0430b7f7 |
598 | |
599 | /* under Perl 5.8.8 64bit threading, AvARRAY(thing) was a pointer while AvALLOC was 0, |
b1e5ad85 |
600 | resulting in grossly overstated sized for arrays. Technically, this shouldn't happen... */ |
0430b7f7 |
601 | if (AvALLOC(thing) != 0) { |
eee00145 |
602 | st->total_size += (sizeof(SV *) * (AvARRAY(thing) - AvALLOC(thing))); |
0430b7f7 |
603 | } |
795fc84c |
604 | #if (PERL_VERSION < 9) |
605 | /* Is there something hanging off the arylen element? |
606 | Post 5.9.something this is stored in magic, so will be found there, |
607 | and Perl_av_arylen_p() takes a non-const AV*, hence compilers rightly |
608 | complain about AvARYLEN() passing thing to it. */ |
f3cf7e20 |
609 | sv_size(aTHX_ st, AvARYLEN(thing), recurse); |
795fc84c |
610 | #endif |
eee00145 |
611 | magic_size(thing, st); |
9fc9ab86 |
612 | TAG;break; |
613 | case SVt_PVHV: TAG; |
a6ea0805 |
614 | /* First the base struct */ |
eee00145 |
615 | st->total_size += sizeof(XPVHV); |
a6ea0805 |
616 | /* Now the array of buckets */ |
eee00145 |
617 | st->total_size += (sizeof(HE *) * (HvMAX(thing) + 1)); |
a6ea0805 |
618 | /* Now walk the bucket chain */ |
6a9ad7ec |
619 | if (HvARRAY(thing)) { |
a6ea0805 |
620 | HE *cur_entry; |
9fc9ab86 |
621 | UV cur_bucket = 0; |
a6ea0805 |
622 | for (cur_bucket = 0; cur_bucket <= HvMAX(thing); cur_bucket++) { |
9fc9ab86 |
623 | cur_entry = *(HvARRAY(thing) + cur_bucket); |
624 | while (cur_entry) { |
eee00145 |
625 | st->total_size += sizeof(HE); |
9fc9ab86 |
626 | if (cur_entry->hent_hek) { |
627 | /* Hash keys can be shared. Have we seen this before? */ |
a4efdff3 |
628 | if (check_new(st, cur_entry->hent_hek)) { |
eee00145 |
629 | st->total_size += HEK_BASESIZE + cur_entry->hent_hek->hek_len + 2; |
9fc9ab86 |
630 | } |
631 | } |
f3cf7e20 |
632 | if (recurse >= TOTAL_SIZE_RECURSION) |
633 | sv_size(aTHX_ st, HeVAL(cur_entry), recurse); |
9fc9ab86 |
634 | cur_entry = cur_entry->hent_next; |
635 | } |
a6ea0805 |
636 | } |
637 | } |
eee00145 |
638 | magic_size(thing, st); |
9fc9ab86 |
639 | TAG;break; |
640 | case SVt_PVCV: TAG; |
eee00145 |
641 | st->total_size += sizeof(XPVCV); |
642 | magic_size(thing, st); |
7ccc7d88 |
643 | |
eee00145 |
644 | st->total_size += ((XPVIO *) SvANY(thing))->xpv_len; |
f3cf7e20 |
645 | sv_size(aTHX_ st, (SV *)CvSTASH(thing), SOME_RECURSION); |
646 | sv_size(aTHX_ st, (SV *)SvSTASH(thing), SOME_RECURSION); |
647 | sv_size(aTHX_ st, (SV *)CvGV(thing), SOME_RECURSION); |
648 | sv_size(aTHX_ st, (SV *)CvPADLIST(thing), recurse); |
649 | sv_size(aTHX_ st, (SV *)CvOUTSIDE(thing), recurse); |
66f50dda |
650 | if (CvISXSUB(thing)) { |
f3cf7e20 |
651 | sv_size(aTHX_ st, cv_const_sv((CV *)thing), recurse); |
66f50dda |
652 | } else { |
1e5a8ad2 |
653 | op_size(aTHX_ CvSTART(thing), st); |
654 | op_size(aTHX_ CvROOT(thing), st); |
7ccc7d88 |
655 | } |
656 | |
9fc9ab86 |
657 | TAG;break; |
658 | case SVt_PVGV: TAG; |
eee00145 |
659 | magic_size(thing, st); |
660 | st->total_size += sizeof(XPVGV); |
4a3d023d |
661 | if(isGV_with_GP(thing)) { |
662 | st->total_size += GvNAMELEN(thing); |
78dfb4e7 |
663 | #ifdef GvFILE |
4a3d023d |
664 | /* Is there a file? */ |
665 | check_new_and_strlen(st, GvFILE(thing)); |
78dfb4e7 |
666 | #endif |
4a3d023d |
667 | /* Is there something hanging off the glob? */ |
668 | if (check_new(st, GvGP(thing))) { |
669 | st->total_size += sizeof(GP); |
f3cf7e20 |
670 | sv_size(aTHX_ st, (SV *)(GvGP(thing)->gp_sv), recurse); |
671 | sv_size(aTHX_ st, (SV *)(GvGP(thing)->gp_form), recurse); |
672 | sv_size(aTHX_ st, (SV *)(GvGP(thing)->gp_av), recurse); |
673 | sv_size(aTHX_ st, (SV *)(GvGP(thing)->gp_hv), recurse); |
674 | sv_size(aTHX_ st, (SV *)(GvGP(thing)->gp_egv), recurse); |
675 | sv_size(aTHX_ st, (SV *)(GvGP(thing)->gp_cv), recurse); |
4a3d023d |
676 | } |
5c2e1b12 |
677 | } |
9fc9ab86 |
678 | TAG;break; |
679 | case SVt_PVFM: TAG; |
eee00145 |
680 | st->total_size += sizeof(XPVFM); |
681 | magic_size(thing, st); |
682 | st->total_size += ((XPVIO *) SvANY(thing))->xpv_len; |
f3cf7e20 |
683 | sv_size(aTHX_ st, (SV *)CvPADLIST(thing), recurse); |
684 | sv_size(aTHX_ st, (SV *)CvOUTSIDE(thing), recurse); |
7ccc7d88 |
685 | |
a4efdff3 |
686 | if (st->go_yell && !st->fm_whine) { |
5073b933 |
687 | carp("Devel::Size: Calculated sizes for FMs are incomplete"); |
a4efdff3 |
688 | st->fm_whine = 1; |
ebb2c5b9 |
689 | } |
9fc9ab86 |
690 | TAG;break; |
691 | case SVt_PVIO: TAG; |
eee00145 |
692 | st->total_size += sizeof(XPVIO); |
693 | magic_size(thing, st); |
a4efdff3 |
694 | if (check_new(st, (SvPVX_const(thing)))) { |
eee00145 |
695 | st->total_size += ((XPVIO *) SvANY(thing))->xpv_cur; |
ebb2c5b9 |
696 | } |
5073b933 |
697 | /* Some embedded char pointers */ |
99684fd4 |
698 | check_new_and_strlen(st, ((XPVIO *) SvANY(thing))->xio_top_name); |
699 | check_new_and_strlen(st, ((XPVIO *) SvANY(thing))->xio_fmt_name); |
700 | check_new_and_strlen(st, ((XPVIO *) SvANY(thing))->xio_bottom_name); |
5073b933 |
701 | /* Throw the GVs on the list to be walked if they're not-null */ |
f3cf7e20 |
702 | sv_size(aTHX_ st, (SV *)((XPVIO *) SvANY(thing))->xio_top_gv, recurse); |
703 | sv_size(aTHX_ st, (SV *)((XPVIO *) SvANY(thing))->xio_bottom_gv, recurse); |
704 | sv_size(aTHX_ st, (SV *)((XPVIO *) SvANY(thing))->xio_fmt_gv, recurse); |
5073b933 |
705 | |
706 | /* Only go trotting through the IO structures if they're really |
707 | trottable. If USE_PERLIO is defined we can do this. If |
708 | not... we can't, so we don't even try */ |
709 | #ifdef USE_PERLIO |
710 | /* Dig into xio_ifp and xio_ofp here */ |
9fc9ab86 |
711 | warn("Devel::Size: Can't size up perlio layers yet\n"); |
5073b933 |
712 | #endif |
9fc9ab86 |
713 | TAG;break; |
e98cedbf |
714 | default: |
9fc9ab86 |
715 | warn("Devel::Size: Unknown variable type: %d encountered\n", SvTYPE(thing) ); |
e98cedbf |
716 | } |
81f1c018 |
717 | return TRUE; |
e98cedbf |
718 | } |
719 | |
a4efdff3 |
720 | static struct state * |
721 | new_state(pTHX) |
65db36c0 |
722 | { |
723 | SV *warn_flag; |
a4efdff3 |
724 | struct state *st; |
725 | Newxz(st, 1, struct state); |
726 | st->go_yell = TRUE; |
65db36c0 |
727 | if (NULL != (warn_flag = perl_get_sv("Devel::Size::warn", FALSE))) { |
a4efdff3 |
728 | st->dangle_whine = st->go_yell = SvIV(warn_flag) ? TRUE : FALSE; |
65db36c0 |
729 | } |
730 | if (NULL != (warn_flag = perl_get_sv("Devel::Size::dangle", FALSE))) { |
a4efdff3 |
731 | st->dangle_whine = SvIV(warn_flag) ? TRUE : FALSE; |
65db36c0 |
732 | } |
a52ceccd |
733 | check_new(st, &PL_sv_undef); |
734 | check_new(st, &PL_sv_no); |
735 | check_new(st, &PL_sv_yes); |
a4efdff3 |
736 | return st; |
65db36c0 |
737 | } |
738 | |
9fc9ab86 |
739 | MODULE = Devel::Size PACKAGE = Devel::Size |
e98cedbf |
740 | |
fea63ffa |
741 | PROTOTYPES: DISABLE |
742 | |
eee00145 |
743 | UV |
a6ea0805 |
744 | size(orig_thing) |
745 | SV *orig_thing |
e98cedbf |
746 | CODE: |
747 | { |
6a9ad7ec |
748 | SV *thing = orig_thing; |
a4efdff3 |
749 | struct state *st = new_state(aTHX); |
ebb2c5b9 |
750 | |
6a9ad7ec |
751 | /* If they passed us a reference then dereference it. This is the |
752 | only way we can check the sizes of arrays and hashes */ |
b7621729 |
753 | #if (PERL_VERSION < 11) |
6a9ad7ec |
754 | if (SvOK(thing) && SvROK(thing)) { |
755 | thing = SvRV(thing); |
756 | } |
b7621729 |
757 | #else |
758 | if (SvROK(thing)) { |
759 | thing = SvRV(thing); |
760 | } |
761 | #endif |
762 | |
f3cf7e20 |
763 | sv_size(aTHX_ st, thing, NO_RECURSION); |
eee00145 |
764 | RETVAL = st->total_size; |
a4efdff3 |
765 | free_state(st); |
6a9ad7ec |
766 | } |
767 | OUTPUT: |
768 | RETVAL |
769 | |
770 | |
eee00145 |
771 | UV |
6a9ad7ec |
772 | total_size(orig_thing) |
773 | SV *orig_thing |
774 | CODE: |
775 | { |
776 | SV *thing = orig_thing; |
b7621729 |
777 | /* Array with things we still need to do */ |
778 | AV *pending_array; |
b98fcdb9 |
779 | IV size = 0; |
a4efdff3 |
780 | struct state *st = new_state(aTHX); |
b98fcdb9 |
781 | |
6a9ad7ec |
782 | /* Size starts at zero */ |
783 | RETVAL = 0; |
784 | |
b7621729 |
785 | pending_array = newAV(); |
786 | |
8c394e12 |
787 | /* If they passed us a reference then dereference it. |
b7621729 |
788 | This is the only way we can check the sizes of arrays and hashes. */ |
789 | if (SvROK(thing)) { |
8c394e12 |
790 | thing = SvRV(thing); |
b7621729 |
791 | } |
6a9ad7ec |
792 | |
793 | /* Put it on the pending array */ |
794 | av_push(pending_array, thing); |
795 | |
796 | /* Now just yank things off the end of the array until it's done */ |
e96acca9 |
797 | while (av_len(pending_array) >= 0) { |
798 | thing = av_pop(pending_array); |
6a9ad7ec |
799 | /* Process it if we've not seen it */ |
f3cf7e20 |
800 | if (sv_size(aTHX_ st, thing, TOTAL_SIZE_RECURSION)) { |
b7621729 |
801 | dbg_printf(("# Found type %i at %p\n", SvTYPE(thing), thing)); |
9fc9ab86 |
802 | switch (SvTYPE(thing)) { |
803 | /* fix for bug #24846 (Does not correctly recurse into references in a PVNV-type scalar) */ |
804 | case SVt_PVNV: TAG; |
805 | if (SvROK(thing)) |
806 | { |
807 | av_push(pending_array, SvRV(thing)); |
808 | } |
809 | TAG;break; |
b7621729 |
810 | #if (PERL_VERSION < 11) |
9fc9ab86 |
811 | case SVt_RV: TAG; |
b7621729 |
812 | #else |
9fc9ab86 |
813 | case SVt_IV: TAG; |
b7621729 |
814 | #endif |
815 | dbg_printf(("# Found RV\n")); |
816 | if (SvROK(thing)) { |
817 | dbg_printf(("# Found RV\n")); |
818 | av_push(pending_array, SvRV(thing)); |
819 | } |
9fc9ab86 |
820 | TAG;break; |
821 | |
822 | case SVt_PVAV: TAG; |
823 | { |
824 | AV *tempAV = (AV *)thing; |
825 | SV **tempSV; |
826 | |
827 | dbg_printf(("# Found type AV\n")); |
828 | /* Quick alias to cut down on casting */ |
829 | |
830 | /* Any elements? */ |
831 | if (av_len(tempAV) != -1) { |
832 | IV index; |
833 | /* Run through them all */ |
834 | for (index = 0; index <= av_len(tempAV); index++) { |
835 | /* Did we get something? */ |
836 | if ((tempSV = av_fetch(tempAV, index, 0))) { |
837 | /* Was it undef? */ |
838 | if (*tempSV != &PL_sv_undef) { |
839 | /* Apparently not. Save it for later */ |
840 | av_push(pending_array, *tempSV); |
841 | } |
842 | } |
843 | } |
844 | } |
845 | } |
846 | TAG;break; |
847 | |
9fc9ab86 |
848 | case SVt_PVGV: TAG; |
849 | dbg_printf(("# Found type GV\n")); |
4a3d023d |
850 | if(!isGV_with_GP(thing)) |
851 | break; |
9fc9ab86 |
852 | /* Run through all the pieces and push the ones with bits */ |
853 | if (GvSV(thing)) { |
854 | av_push(pending_array, (SV *)GvSV(thing)); |
855 | } |
856 | if (GvFORM(thing)) { |
857 | av_push(pending_array, (SV *)GvFORM(thing)); |
858 | } |
859 | if (GvAV(thing)) { |
860 | av_push(pending_array, (SV *)GvAV(thing)); |
861 | } |
862 | if (GvHV(thing)) { |
863 | av_push(pending_array, (SV *)GvHV(thing)); |
864 | } |
865 | if (GvCV(thing)) { |
866 | av_push(pending_array, (SV *)GvCV(thing)); |
867 | } |
868 | TAG;break; |
869 | default: |
870 | TAG;break; |
6a9ad7ec |
871 | } |
b7621729 |
872 | } else { |
873 | /* check_new() returned false: */ |
874 | #ifdef DEVEL_SIZE_DEBUGGING |
875 | if (SvOK(sv)) printf("# Ignore ref copy 0x%x\n", sv); |
876 | else printf("# Ignore non-sv 0x%x\n", sv); |
877 | #endif |
6a9ad7ec |
878 | } |
b7621729 |
879 | } /* end while */ |
e9716740 |
880 | |
eee00145 |
881 | RETVAL = st->total_size; |
a4efdff3 |
882 | free_state(st); |
6a9ad7ec |
883 | SvREFCNT_dec(pending_array); |
e98cedbf |
884 | } |
885 | OUTPUT: |
886 | RETVAL |
6a9ad7ec |
887 | |