X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=Size.xs;h=05e540a99d4731580fe84ed74246c3367eedd08e;hb=68c84f510a339f3b28da43f82e68f191ca4e59e5;hp=e89a33cb98d950029eaac137eecbc5777adcf5c1;hpb=f73dcfce7506b8a7aed31ba357d14aec27cb74d0;p=p5sagit%2FDevel-Size.git diff --git a/Size.xs b/Size.xs index e89a33c..05e540a 100644 --- a/Size.xs +++ b/Size.xs @@ -1,3 +1,5 @@ +/* -*- mode: C -*- */ + #define PERL_NO_GET_CONTEXT #include "EXTERN.h" @@ -12,6 +14,25 @@ #ifndef SvRV_const # define SvRV_const(rv) SvRV(rv) #endif +#ifndef SvOOK_offset +# define SvOOK_offset(sv, len) STMT_START { len = SvIVX(sv); } STMT_END +#endif +#ifndef SvIsCOW +# define SvIsCOW(sv) ((SvFLAGS(sv) & (SVf_FAKE | SVf_READONLY)) == \ + (SVf_FAKE | SVf_READONLY)) +#endif +#ifndef SvIsCOW_shared_hash +# define SvIsCOW_shared_hash(sv) (SvIsCOW(sv) && SvLEN(sv) == 0) +#endif +#ifndef SvSHARED_HEK_FROM_PV +# define SvSHARED_HEK_FROM_PV(pvx) \ + ((struct hek*)(pvx - STRUCT_OFFSET(struct hek, hek_key))) +#endif + +#if PERL_VERSION < 6 +# define PL_opargs opargs +# define PL_op_name op_name +#endif #ifdef _MSC_VER /* "structured exception" handling is a Microsoft extension to C and C++. @@ -20,7 +41,7 @@ functionality on other platforms. */ # include # define TRY_TO_CATCH_SEGV __try -# define CAUGHT_EXCEPTION __except(EXCEPTION EXCEPTION_EXECUTE_HANDLER) +# define CAUGHT_EXCEPTION __except(EXCEPTION_EXECUTE_HANDLER) #else # define TRY_TO_CATCH_SEGV if(1) # define CAUGHT_EXCEPTION else @@ -138,7 +159,7 @@ free_tracking_at(void **tv, int level) /* Nodes */ do { if (tv[i]) { - free_tracking_at(tv[i], level); + free_tracking_at((void **) tv[i], level); Safefree(tv[i]); } } while (i--); @@ -173,7 +194,7 @@ free_state(struct state *st) #define SOME_RECURSION 1 #define TOTAL_SIZE_RECURSION 2 -static bool sv_size(pTHX_ struct state *, const SV *const, const int recurse); +static void sv_size(pTHX_ struct state *, const SV *const, const int recurse); typedef enum { OPc_NULL, /* 0 */ @@ -188,6 +209,13 @@ typedef enum { OPc_PVOP, /* 9 */ OPc_LOOP, /* 10 */ OPc_COP /* 11 */ +#ifdef OA_CONDOP + , OPc_CONDOP /* 12 */ +#endif +#ifdef OA_GVOP + , OPc_GVOP /* 13 */ +#endif + } opclass; static opclass @@ -233,9 +261,17 @@ cc_opclass(const OP * const o) case OA_SVOP: TAG; return OPc_SVOP; +#ifdef OA_PADOP case OA_PADOP: TAG; return OPc_PADOP; +#endif +#ifdef OA_GVOP + case OA_GVOP: TAG; + return OPc_GVOP; +#endif + +#ifdef OA_PVOP_OR_SVOP case OA_PVOP_OR_SVOP: TAG; /* * Character translations (tr///) are usually a PVOP, keeping a @@ -246,6 +282,7 @@ cc_opclass(const OP * const o) */ return (o->op_private & (OPpTRANS_TO_UTF|OPpTRANS_FROM_UTF)) ? OPc_SVOP : OPc_PVOP; +#endif case OA_LOOP: TAG; return OPc_LOOP; @@ -295,6 +332,11 @@ cc_opclass(const OP * const o) return OPc_BASEOP; else return OPc_PVOP; + +#ifdef OA_CONDOP + case OA_CONDOP: TAG; + return OPc_CONDOP; +#endif } warn("Devel::Size: Can't determine class of operator %s, assuming BASEOP\n", PL_op_name[o->op_type]); @@ -303,11 +345,6 @@ cc_opclass(const OP * const o) return OPc_BASEOP; } - -#if !defined(NV) -#define NV double -#endif - /* Figure out how much magic is attached to the SV and return the size */ static void @@ -317,12 +354,12 @@ magic_size(pTHX_ const SV * const thing, struct state *st) { /* Have we seen the magic pointer? (NULL has always been seen before) */ while (check_new(st, magic_pointer)) { st->total_size += sizeof(MAGIC); + /* magic vtables aren't freed when magic is freed, so don't count them. + (They are static structures. Anything that assumes otherwise is buggy.) + */ + TRY_TO_CATCH_SEGV { - /* Have we seen the magic vtable? */ - if (check_new(st, magic_pointer->mg_virtual)) { - st->total_size += sizeof(MGVTBL); - } sv_size(aTHX_ st, magic_pointer->mg_obj, TOTAL_SIZE_RECURSION); if (magic_pointer->mg_len == HEf_SVKEY) { sv_size(aTHX_ st, (SV *)magic_pointer->mg_ptr, TOTAL_SIZE_RECURSION); @@ -392,38 +429,45 @@ op_size(pTHX_ const OP * const baseop, struct state *st) TAG;break; case OPc_UNOP: TAG; st->total_size += sizeof(struct unop); - op_size(aTHX_ cUNOPx(baseop)->op_first, st); + op_size(aTHX_ ((UNOP *)baseop)->op_first, st); TAG;break; case OPc_BINOP: TAG; st->total_size += sizeof(struct binop); - op_size(aTHX_ cBINOPx(baseop)->op_first, st); - op_size(aTHX_ cBINOPx(baseop)->op_last, st); + op_size(aTHX_ ((BINOP *)baseop)->op_first, st); + op_size(aTHX_ ((BINOP *)baseop)->op_last, st); TAG;break; case OPc_LOGOP: TAG; st->total_size += sizeof(struct logop); - op_size(aTHX_ cBINOPx(baseop)->op_first, st); - op_size(aTHX_ cLOGOPx(baseop)->op_other, st); + op_size(aTHX_ ((BINOP *)baseop)->op_first, st); + op_size(aTHX_ ((LOGOP *)baseop)->op_other, st); TAG;break; +#ifdef OA_CONDOP + case OPc_CONDOP: TAG; + st->total_size += sizeof(struct condop); + op_size(aTHX_ ((BINOP *)baseop)->op_first, st); + op_size(aTHX_ ((CONDOP *)baseop)->op_true, st); + op_size(aTHX_ ((CONDOP *)baseop)->op_false, st); + TAG;break; +#endif case OPc_LISTOP: TAG; st->total_size += sizeof(struct listop); - op_size(aTHX_ cLISTOPx(baseop)->op_first, st); - op_size(aTHX_ cLISTOPx(baseop)->op_last, st); + op_size(aTHX_ ((LISTOP *)baseop)->op_first, st); + op_size(aTHX_ ((LISTOP *)baseop)->op_last, st); TAG;break; case OPc_PMOP: TAG; st->total_size += sizeof(struct pmop); - op_size(aTHX_ cPMOPx(baseop)->op_first, st); - op_size(aTHX_ cPMOPx(baseop)->op_last, st); + op_size(aTHX_ ((PMOP *)baseop)->op_first, st); + op_size(aTHX_ ((PMOP *)baseop)->op_last, st); #if PERL_VERSION < 9 || (PERL_VERSION == 9 && PERL_SUBVERSION < 5) - op_size(aTHX_ cPMOPx(baseop)->op_pmreplroot, st); - op_size(aTHX_ cPMOPx(baseop)->op_pmreplstart, st); - op_size(aTHX_ (OP *)cPMOPx(baseop)->op_pmnext, st); + op_size(aTHX_ ((PMOP *)baseop)->op_pmreplroot, st); + op_size(aTHX_ ((PMOP *)baseop)->op_pmreplstart, st); #endif /* This is defined away in perl 5.8.x, but it is in there for 5.6.x */ #ifdef PM_GETRE - regex_size(PM_GETRE(cPMOPx(baseop)), st); + regex_size(PM_GETRE((PMOP *)baseop), st); #else - regex_size(cPMOPx(baseop)->op_pmregexp, st); + regex_size(((PMOP *)baseop)->op_pmregexp, st); #endif TAG;break; case OPc_SVOP: TAG; @@ -431,22 +475,30 @@ op_size(pTHX_ const OP * const baseop, struct state *st) if (!(baseop->op_type == OP_AELEMFAST && baseop->op_flags & OPf_SPECIAL)) { /* not an OP_PADAV replacement */ - sv_size(aTHX_ st, cSVOPx(baseop)->op_sv, SOME_RECURSION); + sv_size(aTHX_ st, ((SVOP *)baseop)->op_sv, SOME_RECURSION); } TAG;break; +#ifdef OA_PADOP case OPc_PADOP: TAG; st->total_size += sizeof(struct padop); TAG;break; +#endif +#ifdef OA_GVOP + case OPc_GVOP: TAG; + st->total_size += sizeof(struct gvop); + sv_size(aTHX_ st, ((GVOP *)baseop)->op_gv, SOME_RECURSION); + TAG;break; +#endif case OPc_PVOP: TAG; - check_new_and_strlen(st, cPVOPx(baseop)->op_pv); + check_new_and_strlen(st, ((PVOP *)baseop)->op_pv); TAG;break; case OPc_LOOP: TAG; st->total_size += sizeof(struct loop); - op_size(aTHX_ cLOOPx(baseop)->op_first, st); - op_size(aTHX_ cLOOPx(baseop)->op_last, st); - op_size(aTHX_ cLOOPx(baseop)->op_redoop, st); - op_size(aTHX_ cLOOPx(baseop)->op_nextop, st); - op_size(aTHX_ cLOOPx(baseop)->op_lastop, st); + op_size(aTHX_ ((LOOP *)baseop)->op_first, st); + op_size(aTHX_ ((LOOP *)baseop)->op_last, st); + op_size(aTHX_ ((LOOP *)baseop)->op_redoop, st); + op_size(aTHX_ ((LOOP *)baseop)->op_nextop, st); + op_size(aTHX_ ((LOOP *)baseop)->op_lastop, st); TAG;break; case OPc_COP: TAG; { @@ -466,9 +518,16 @@ op_size(pTHX_ const OP * const baseop, struct state *st) #endif #ifdef USE_ITHREADS check_new_and_strlen(st, basecop->cop_file); +#if PERL_VERSION < 17 || (PERL_VERSION == 17 && PERL_SUBVERSION == 0) + /* This pointer is owned by the COP, and freed with it. */ check_new_and_strlen(st, basecop->cop_stashpv); #else - sv_size(aTHX_ st, (SV *)basecop->cop_stash, SOME_RECURSION); + /* A per-interpreter pointer for this stash is allocated in + PL_stashpad. */ + if (check_new(st, PL_stashpad + basecop->cop_stashoff)) + st->total_size += sizeof(PL_stashpad[basecop->cop_stashoff]); +#endif +#else sv_size(aTHX_ st, (SV *)basecop->cop_filegv, SOME_RECURSION); #endif @@ -484,6 +543,29 @@ op_size(pTHX_ const OP * const baseop, struct state *st) } } +static void +hek_size(pTHX_ struct state *st, HEK *hek, U32 shared) +{ + /* Hash keys can be shared. Have we seen this before? */ + if (!check_new(st, hek)) + return; + st->total_size += HEK_BASESIZE + hek->hek_len +#if PERL_VERSION < 8 + + 1 /* No hash key flags prior to 5.8.0 */ +#else + + 2 +#endif + ; + if (shared) { +#if PERL_VERSION < 10 + st->total_size += sizeof(struct he); +#else + st->total_size += STRUCT_OFFSET(struct shared_he, shared_he_hek); +#endif + } +} + + #if PERL_VERSION < 8 || PERL_SUBVERSION < 9 # define SVt_LAST 16 #endif @@ -585,19 +667,43 @@ const U8 body_sizes[SVt_LAST] = { #endif }; -static bool +#ifdef PadlistNAMES +static void +padlist_size(pTHX_ struct state *const st, const PADLIST * const padl, + const int recurse) { + SSize_t i; + if (!check_new(st, padl)) + return; + /* This relies on PADNAMELIST and PAD being typedefed to AV. If that + ever changes, this code will need an update. */ + st->total_size += sizeof(PADLIST); + sv_size(aTHX_ st, (SV*)PadlistNAMES(padl), recurse); + i = PadlistMAX(padl) + 1; + st->total_size += sizeof(PAD*) * i; + while (--i) + sv_size(aTHX_ st, (SV*)PadlistARRAY(padl)[i], recurse); +} +#else +static void +padlist_size(pTHX_ struct state *const st, const AV * const padl, + const int recurse) { + sv_size(aTHX_ st, (SV*)padl, recurse); +} +#endif + +static void sv_size(pTHX_ struct state *const st, const SV * const orig_thing, const int recurse) { const SV *thing = orig_thing; U32 type; if(!check_new(st, thing)) - return FALSE; + return; type = SvTYPE(thing); if (type > SVt_LAST) { warn("Devel::Size: Unknown variable type: %d encountered\n", type); - return TRUE; + return; } st->total_size += sizeof(SV) + body_sizes[type]; @@ -659,23 +765,58 @@ sv_size(pTHX_ struct state *const st, const SV * const orig_thing, cur_entry = *(HvARRAY(thing) + cur_bucket); while (cur_entry) { st->total_size += sizeof(HE); - if (cur_entry->hent_hek) { - /* Hash keys can be shared. Have we seen this before? */ - if (check_new(st, cur_entry->hent_hek)) { - st->total_size += HEK_BASESIZE + cur_entry->hent_hek->hek_len + 2; - } - } + hek_size(aTHX_ st, cur_entry->hent_hek, HvSHAREKEYS(thing)); if (recurse >= TOTAL_SIZE_RECURSION) sv_size(aTHX_ st, HeVAL(cur_entry), recurse); cur_entry = cur_entry->hent_next; } } } +#ifdef HvAUX + if (SvOOK(thing)) { + /* This direct access is arguably "naughty": */ + struct mro_meta *meta = HvAUX(thing)->xhv_mro_meta; +#if PERL_VERSION > 13 || PERL_SUBVERSION > 8 + /* As is this: */ + I32 count = HvAUX(thing)->xhv_name_count; + + if (count) { + HEK **names = HvAUX(thing)->xhv_name_u.xhvnameu_names; + if (count < 0) + count = -count; + while (--count) + hek_size(aTHX_ st, names[count], 1); + } + else +#endif + { + hek_size(aTHX_ st, HvNAME_HEK(thing), 1); + } + + st->total_size += sizeof(struct xpvhv_aux); + if (meta) { + st->total_size += sizeof(struct mro_meta); + sv_size(aTHX_ st, (SV *)meta->mro_nextmethod, TOTAL_SIZE_RECURSION); +#if PERL_VERSION > 10 || (PERL_VERSION == 10 && PERL_SUBVERSION > 0) + sv_size(aTHX_ st, (SV *)meta->isa, TOTAL_SIZE_RECURSION); +#endif +#if PERL_VERSION > 10 + sv_size(aTHX_ st, (SV *)meta->mro_linear_all, TOTAL_SIZE_RECURSION); + sv_size(aTHX_ st, meta->mro_linear_current, TOTAL_SIZE_RECURSION); +#else + sv_size(aTHX_ st, (SV *)meta->mro_linear_dfs, TOTAL_SIZE_RECURSION); + sv_size(aTHX_ st, (SV *)meta->mro_linear_c3, TOTAL_SIZE_RECURSION); +#endif + } + } +#else + check_new_and_strlen(st, HvNAME_get(thing)); +#endif TAG;break; case SVt_PVFM: TAG; - sv_size(aTHX_ st, (SV *)CvPADLIST(thing), SOME_RECURSION); + padlist_size(aTHX_ st, CvPADLIST(thing), SOME_RECURSION); sv_size(aTHX_ st, (SV *)CvOUTSIDE(thing), recurse); if (st->go_yell && !st->fm_whine) { @@ -688,11 +829,11 @@ sv_size(pTHX_ struct state *const st, const SV * const orig_thing, sv_size(aTHX_ st, (SV *)CvSTASH(thing), SOME_RECURSION); sv_size(aTHX_ st, (SV *)SvSTASH(thing), SOME_RECURSION); sv_size(aTHX_ st, (SV *)CvGV(thing), SOME_RECURSION); - sv_size(aTHX_ st, (SV *)CvPADLIST(thing), SOME_RECURSION); + padlist_size(aTHX_ st, CvPADLIST(thing), SOME_RECURSION); sv_size(aTHX_ st, (SV *)CvOUTSIDE(thing), recurse); if (CvISXSUB(thing)) { sv_size(aTHX_ st, cv_const_sv((CV *)thing), recurse); - } else { + } else if (CvROOT(thing)) { op_size(aTHX_ CvSTART(thing), st); op_size(aTHX_ CvROOT(thing), st); } @@ -724,8 +865,14 @@ sv_size(pTHX_ struct state *const st, const SV * const orig_thing, case SVt_PVGV: TAG; if(isGV_with_GP(thing)) { +#ifdef GvNAME_HEK + hek_size(aTHX_ st, GvNAME_HEK(thing), 1); +#else st->total_size += GvNAMELEN(thing); -#ifdef GvFILE +#endif +#ifdef GvFILE_HEK + hek_size(aTHX_ st, GvFILE_HEK(thing), 1); +#elif defined(GvFILE) # if !defined(USE_ITHREADS) || (PERL_VERSION > 8 || (PERL_VERSION == 8 && PERL_SUBVERSION > 8)) /* With itreads, before 5.8.9, this can end up pointing to freed memory if the GV was created in an eval, as GvFILE() points to CopFILE(), @@ -761,39 +908,27 @@ sv_size(pTHX_ struct state *const st, const SV * const orig_thing, freescalar: if(recurse && SvROK(thing)) sv_size(aTHX_ st, SvRV_const(thing), recurse); + else if (SvIsCOW_shared_hash(thing)) + hek_size(aTHX_ st, SvSHARED_HEK_FROM_PV(SvPVX(thing)), 1); else st->total_size += SvLEN(thing); if(SvOOK(thing)) { - st->total_size += SvIVX(thing); + STRLEN len; + SvOOK_offset(thing, len); + st->total_size += len; } TAG;break; } - return TRUE; + return; } -/* Frustratingly, the vtables aren't const in perl.h - gcc is happy enough to have non-const initialisers in a static array. - VC seems not to be. (Is it actually treating the file as C++?) - So do the maximally portable thing, unless we know it's gcc, in which case - we can do the more space efficient version. */ - -#if __GNUC__ -void *vtables[] = { -#include "vtables.inc" - NULL -}; -#endif - static struct state * new_state(pTHX) { SV *warn_flag; struct state *st; -#if __GNUC__ - void **vt_p = vtables; -#endif Newxz(st, 1, struct state); st->go_yell = TRUE; @@ -806,11 +941,8 @@ new_state(pTHX) check_new(st, &PL_sv_undef); check_new(st, &PL_sv_no); check_new(st, &PL_sv_yes); -#if __GNUC__ - while(*vt_p) - check_new(st, *vt_p++); -#else -#include "vtables.inc" +#if PERL_VERSION > 8 || (PERL_VERSION == 8 && PERL_SUBVERSION > 0) + check_new(st, &PL_sv_placeholder); #endif return st; }