X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=op.c;h=1345af4e9a0640fa52862fd4d14123655164b95f;hb=235bddc8d16c512a7d89f327f65cee68b1f5848c;hp=d160fedf650657f9522ad0bca892db5008f5bef9;hpb=466bafcd4432239968dcf0c427d25b79b1833243;p=p5sagit%2Fp5-mst-13.2.git diff --git a/op.c b/op.c index d160fed..1345af4 100644 --- a/op.c +++ b/op.c @@ -23,28 +23,75 @@ #define CALL_PEEP(o) CALL_FPTR(PL_peepp)(aTHX_ o) -/* #define PL_OP_SLAB_ALLOC */ - -#if defined(PL_OP_SLAB_ALLOC) && !defined(PERL_IMPLICIT_CONTEXT) -#define SLAB_SIZE 8192 -static char *PL_OpPtr = NULL; /* XXX threadead */ -static int PL_OpSpace = 0; /* XXX threadead */ -#define NewOp(m,var,c,type) do { if ((PL_OpSpace -= c*sizeof(type)) >= 0) \ - var = (type *)(PL_OpPtr -= c*sizeof(type)); \ - else \ - var = (type *) Slab_Alloc(m,c*sizeof(type)); \ - } while (0) +#if defined(PL_OP_SLAB_ALLOC) + +#ifndef PERL_SLAB_SIZE +#define PERL_SLAB_SIZE 2048 +#endif + +#define NewOp(m,var,c,type) \ + STMT_START { var = (type *) Slab_Alloc(m,c*sizeof(type)); } STMT_END + +#define FreeOp(p) Slab_Free(p) STATIC void * S_Slab_Alloc(pTHX_ int m, size_t sz) { - Newz(m,PL_OpPtr,SLAB_SIZE,char); - PL_OpSpace = SLAB_SIZE - sz; - return PL_OpPtr += PL_OpSpace; + /* + * To make incrementing use count easy PL_OpSlab is an I32 * + * To make inserting the link to slab PL_OpPtr is I32 ** + * So compute size in units of sizeof(I32 *) as that is how Pl_OpPtr increments + * Add an overhead for pointer to slab and round up as a number of pointers + */ + sz = (sz + 2*sizeof(I32 *) -1)/sizeof(I32 *); + if ((PL_OpSpace -= sz) < 0) { + PL_OpPtr = (I32 **) PerlMemShared_malloc(PERL_SLAB_SIZE*sizeof(I32*)); + if (!PL_OpPtr) { + return NULL; + } + Zero(PL_OpPtr,PERL_SLAB_SIZE,I32 **); + /* We reserve the 0'th I32 sized chunk as a use count */ + PL_OpSlab = (I32 *) PL_OpPtr; + /* Reduce size by the use count word, and by the size we need. + * Latter is to mimic the '-=' in the if() above + */ + PL_OpSpace = PERL_SLAB_SIZE - (sizeof(I32)+sizeof(I32 **)-1)/sizeof(I32 **) - sz; + /* Allocation pointer starts at the top. + Theory: because we build leaves before trunk allocating at end + means that at run time access is cache friendly upward + */ + PL_OpPtr += PERL_SLAB_SIZE; + } + assert( PL_OpSpace >= 0 ); + /* Move the allocation pointer down */ + PL_OpPtr -= sz; + assert( PL_OpPtr > (I32 **) PL_OpSlab ); + *PL_OpPtr = PL_OpSlab; /* Note which slab it belongs to */ + (*PL_OpSlab)++; /* Increment use count of slab */ + assert( PL_OpPtr+sz <= ((I32 **) PL_OpSlab + PERL_SLAB_SIZE) ); + assert( *PL_OpSlab > 0 ); + return (void *)(PL_OpPtr + 1); +} + +STATIC void +S_Slab_Free(pTHX_ void *op) +{ + I32 **ptr = (I32 **) op; + I32 *slab = ptr[-1]; + assert( ptr-1 > (I32 **) slab ); + assert( ptr < ( (I32 **) slab + PERL_SLAB_SIZE) ); + assert( *slab > 0 ); + if (--(*slab) == 0) { + PerlMemShared_free(slab); + if (slab == PL_OpSlab) { + PL_OpSpace = 0; + } + } } #else #define NewOp(m, var, c, type) Newz(m, var, c, type) +#define FreeOp(p) Safefree(p) #endif /* * In the following definition, the ", Nullop" is just to make the compiler @@ -735,14 +782,7 @@ Perl_op_free(pTHX_ OP *o) cop_free((COP*)o); op_clear(o); - -#ifdef PL_OP_SLAB_ALLOC - if ((char *) o == PL_OpPtr) - { - } -#else - Safefree(o); -#endif + FreeOp(o); } void @@ -847,11 +887,7 @@ clear_pmop: pmop = pmop->op_pmnext; } } -#ifdef USE_ITHREADS - Safefree(PmopSTASHPV(cPMOPo)); -#else - /* NOTE: PMOP.op_pmstash is not refcounted */ -#endif + PmopSTASH_free(cPMOPo); } cPMOPo->op_pmreplroot = Nullop; /* we use the "SAFE" version of the PM_ macros here @@ -868,7 +904,7 @@ clear_pmop: SvREPADTMP_on(PL_regex_pad[(cPMOPo)->op_pmoffset]); PM_SETRE(cPMOPo, (cPMOPo)->op_pmoffset); } -#endif +#endif break; } @@ -882,18 +918,20 @@ clear_pmop: STATIC void S_cop_free(pTHX_ COP* cop) { - Safefree(cop->cop_label); -#ifdef USE_ITHREADS - Safefree(CopFILE(cop)); /* XXX share in a pvtable? */ - Safefree(CopSTASHPV(cop)); /* XXX share in a pvtable? */ -#else - /* NOTE: COP.cop_stash is not refcounted */ - SvREFCNT_dec(CopFILEGV(cop)); -#endif + Safefree(cop->cop_label); /* FIXME: treaddead ??? */ + CopFILE_free(cop); + CopSTASH_free(cop); if (! specialWARN(cop->cop_warnings)) SvREFCNT_dec(cop->cop_warnings); - if (! specialCopIO(cop->cop_io)) + if (! specialCopIO(cop->cop_io)) { +#ifdef USE_ITHREADS + STRLEN len; + char *s = SvPV(cop->cop_io,len); + Perl_warn(aTHX_ "io='%.*s'",(int) len,s); +#else SvREFCNT_dec(cop->cop_io); +#endif + } } void @@ -2583,10 +2621,8 @@ Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last) first->op_last = last->op_last; first->op_flags |= (last->op_flags & OPf_KIDS); -#ifdef PL_OP_SLAB_ALLOC -#else - Safefree(last); -#endif + FreeOp(last); + return (OP*)first; } @@ -3090,7 +3126,7 @@ Perl_newPMOP(pTHX_ I32 type, I32 flags) pmop->op_pmoffset = SvIV(repointer); SvREPADTMP_off(repointer); sv_setiv(repointer,0); - } else { + } else { repointer = newSViv(0); av_push(PL_regex_padav,SvREFCNT_inc(repointer)); pmop->op_pmoffset = av_len(PL_regex_padav); @@ -3098,7 +3134,7 @@ Perl_newPMOP(pTHX_ I32 type, I32 flags) } } #endif - + /* link into pm list */ if (type != OP_TRANS && PL_curstash) { pmop->op_pmnext = HvPMROOT(PL_curstash); @@ -3131,7 +3167,7 @@ Perl_pmruntime(pTHX_ OP *o, OP *expr, OP *repl) p = SvPV(pat, plen); pm->op_pmflags |= PMf_SKIPWHITE; } - if (DO_UTF8(pat) || (PL_hints & HINT_UTF8)) + if (DO_UTF8(pat)) pm->op_pmdynflags |= PMdf_UTF8; PM_SETRE(pm, CALLREGCOMP(aTHX_ p, p + plen, pm)); if (strEQ("\\s+", PM_GETRE(pm)->precomp)) @@ -3139,8 +3175,6 @@ Perl_pmruntime(pTHX_ OP *o, OP *expr, OP *repl) op_free(expr); } else { - if (PL_hints & HINT_UTF8) - pm->op_pmdynflags |= PMdf_UTF8; if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) expr = newUNOP((!(PL_hints & HINT_RE_EVAL) ? OP_REGCRESET @@ -3807,10 +3841,10 @@ Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) if (PERLDB_LINE && PL_curstash != PL_debstash) { SV **svp = av_fetch(CopFILEAV(PL_curcop), (I32)CopLINE(cop), FALSE); - if (svp && *svp != &PL_sv_undef ) { + if (svp && *svp != &PL_sv_undef ) { (void)SvIOK_on(*svp); SvIVX(*svp) = PTR2IV(cop); - } + } } return prepend_elem(OP_LINESEQ, (OP*)cop, o); @@ -4290,6 +4324,7 @@ Perl_newFOROP(pTHX_ I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *blo LOOP *tmp; NewOp(1234,tmp,1,LOOP); Copy(loop,tmp,1,LOOP); + FreeOp(loop); loop = tmp; } #else @@ -5143,11 +5178,7 @@ Perl_newCONSTSUB(pTHX_ HV *stash, char *name, SV *sv) SAVESPTR(PL_curstash); SAVECOPSTASH(PL_curcop); PL_curstash = stash; -#ifdef USE_ITHREADS - CopSTASHPV(PL_curcop) = stash ? HvNAME(stash) : Nullch; -#else - CopSTASH(PL_curcop) = stash; -#endif + CopSTASH_set(PL_curcop,stash); } cv = newXS(name, const_sv_xsub, __FILE__); @@ -5883,7 +5914,7 @@ Perl_ck_fun(pTHX_ OP *o) Perl_warner(aTHX_ WARN_SYNTAX, "Useless use of %s with no values", PL_op_desc[type]); - + if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { @@ -6054,8 +6085,8 @@ Perl_ck_glob(pTHX_ OP *o) if (!gv) { GV *glob_gv; ENTER; - Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpvn("File::Glob", 10), Nullsv, - Nullsv, Nullsv); + Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, + newSVpvn("File::Glob", 10), Nullsv, Nullsv, Nullsv); gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); glob_gv = gv_fetchpv("File::Glob::csh_glob", FALSE, SVt_PVCV); GvCV(gv) = GvCV(glob_gv); @@ -6793,7 +6824,7 @@ Perl_ck_subr(pTHX_ OP *o) contextclass = 0; *p = '\0'; while (*--p != '['); - bad_type(arg, Perl_form("one of %s", p), + bad_type(arg, Perl_form(aTHX_ "one of %s", p), gv_ename(namegv), o2); *proto = s; } else @@ -7037,7 +7068,7 @@ Perl_peep(pTHX_ register OP *o) else if (o->op_next->op_type == OP_RV2AV) { OP* pop = o->op_next->op_next; IV i; - if (pop->op_type == OP_CONST && + if (pop && pop->op_type == OP_CONST && (PL_op = pop->op_next) && pop->op_next->op_type == OP_AELEM && !(pop->op_next->op_private &