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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ/* scope.h * * Copyright (C) 1993, 1994, 1996, 1997, 1998, 1999, 2000, 2001, * 2002, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others * * You may distribute under the terms of either the GNU General Public * License or the Artistic License, as specified in the README file. * */ /* *** Update arg_counts[] in scope.c if you modify these */ /* zero args */ #define SAVEt_ALLOC 0 #define SAVEt_CLEARPADRANGE 1 #define SAVEt_CLEARSV 2 #define SAVEt_REGCONTEXT 3 /* one arg */ #define SAVEt_TMPSFLOOR 4 #define SAVEt_BOOL 5 #define SAVEt_COMPILE_WARNINGS 6 #define SAVEt_COMPPAD 7 #define SAVEt_FREECOPHH 8 #define SAVEt_FREEOP 9 #define SAVEt_FREEPV 10 #define SAVEt_FREESV 11 #define SAVEt_I16 12 #define SAVEt_I32_SMALL 13 #define SAVEt_I8 14 #define SAVEt_INT_SMALL 15 #define SAVEt_MORTALIZESV 16 #define SAVEt_NSTAB 17 #define SAVEt_OP 18 #define SAVEt_PARSER 19 #define SAVEt_STACK_POS 20 #define SAVEt_READONLY_OFF 21 #define SAVEt_FREEPADNAME 22 #define SAVEt_STRLEN_SMALL 23 /* two args */ #define SAVEt_AV 24 #define SAVEt_DESTRUCTOR 25 #define SAVEt_DESTRUCTOR_X 26 #define SAVEt_GENERIC_PVREF 27 #define SAVEt_GENERIC_SVREF 28 #define SAVEt_GP 29 #define SAVEt_GVSV 30 #define SAVEt_HINTS 31 #define SAVEt_HPTR 32 #define SAVEt_HV 33 #define SAVEt_I32 34 #define SAVEt_INT 35 #define SAVEt_ITEM 36 #define SAVEt_IV 37 #define SAVEt_LONG 38 #define SAVEt_PPTR 39 #define SAVEt_SAVESWITCHSTACK 40 #define SAVEt_SHARED_PVREF 41 #define SAVEt_SPTR 42 #define SAVEt_STRLEN 43 #define SAVEt_SV 44 #define SAVEt_SVREF 45 #define SAVEt_VPTR 46 #define SAVEt_ADELETE 47 #define SAVEt_APTR 48 /* three args */ #define SAVEt_HELEM 49 #define SAVEt_PADSV_AND_MORTALIZE 50 #define SAVEt_SET_SVFLAGS 51 #define SAVEt_GVSLOT 52 #define SAVEt_AELEM 53 #define SAVEt_DELETE 54 #define SAVEt_HINTS_HH 55 #define SAVEf_SETMAGIC 1 #define SAVEf_KEEPOLDELEM 2 #define SAVE_TIGHT_SHIFT 6 #define SAVE_MASK 0x3F #define save_aelem(av,idx,sptr) save_aelem_flags(av,idx,sptr,SAVEf_SETMAGIC) #define save_helem(hv,key,sptr) save_helem_flags(hv,key,sptr,SAVEf_SETMAGIC) #ifndef SCOPE_SAVES_SIGNAL_MASK #define SCOPE_SAVES_SIGNAL_MASK 0 #endif /* the maximum number of entries that might be pushed using the SS_ADD* * macros */ #define SS_MAXPUSH 4 #define SSCHECK(need) if (UNLIKELY(PL_savestack_ix + (I32)(need) > PL_savestack_max)) savestack_grow() #define SSGROW(need) if (UNLIKELY(PL_savestack_ix + (I32)(need) > PL_savestack_max)) savestack_grow_cnt(need) #define SSPUSHINT(i) (PL_savestack[PL_savestack_ix++].any_i32 = (I32)(i)) #define SSPUSHLONG(i) (PL_savestack[PL_savestack_ix++].any_long = (long)(i)) #define SSPUSHBOOL(p) (PL_savestack[PL_savestack_ix++].any_bool = (p)) #define SSPUSHIV(i) (PL_savestack[PL_savestack_ix++].any_iv = (IV)(i)) #define SSPUSHUV(u) (PL_savestack[PL_savestack_ix++].any_uv = (UV)(u)) #define SSPUSHPTR(p) (PL_savestack[PL_savestack_ix++].any_ptr = (void*)(p)) #define SSPUSHDPTR(p) (PL_savestack[PL_savestack_ix++].any_dptr = (p)) #define SSPUSHDXPTR(p) (PL_savestack[PL_savestack_ix++].any_dxptr = (p)) /* SS_ADD*: newer, faster versions of the above. Don't mix the two sets of * macros. These are fast because they save reduce accesses to the PL_ * vars and move the size check to the end. Doing the check last means * that values in registers will have been pushed and no longer needed, so * don't need saving around the call to grow. Also, tail-call elimination * of the grow() can be done. These changes reduce the code of something * like save_pushptrptr() to half its former size. * Of course, doing the size check *after* pushing means we must always * ensure there are SS_MAXPUSH free slots on the savestack. This is ensured by * savestack_grow() and savestack_grow_cnt always allocating SS_MAXPUSH slots * more than asked for, or that it sets PL_savestack_max to * * These are for internal core use only and are subject to change */ #define dSS_ADD \ I32 ix = PL_savestack_ix; \ ANY *ssp = &PL_savestack[ix] #define SS_ADD_END(need) \ assert((need) <= SS_MAXPUSH); \ ix += (need); \ PL_savestack_ix = ix; \ assert(ix <= PL_savestack_max + SS_MAXPUSH); \ if (UNLIKELY(ix > PL_savestack_max)) savestack_grow(); \ assert(PL_savestack_ix <= PL_savestack_max); #define SS_ADD_INT(i) ((ssp++)->any_i32 = (I32)(i)) #define SS_ADD_LONG(i) ((ssp++)->any_long = (long)(i)) #define SS_ADD_BOOL(p) ((ssp++)->any_bool = (p)) #define SS_ADD_IV(i) ((ssp++)->any_iv = (IV)(i)) #define SS_ADD_UV(u) ((ssp++)->any_uv = (UV)(u)) #define SS_ADD_PTR(p) ((ssp++)->any_ptr = (void*)(p)) #define SS_ADD_DPTR(p) ((ssp++)->any_dptr = (p)) #define SS_ADD_DXPTR(p) ((ssp++)->any_dxptr = (p)) #define SSPOPINT (PL_savestack[--PL_savestack_ix].any_i32) #define SSPOPLONG (PL_savestack[--PL_savestack_ix].any_long) #define SSPOPBOOL (PL_savestack[--PL_savestack_ix].any_bool) #define SSPOPIV (PL_savestack[--PL_savestack_ix].any_iv) #define SSPOPUV (PL_savestack[--PL_savestack_ix].any_uv) #define SSPOPPTR (PL_savestack[--PL_savestack_ix].any_ptr) #define SSPOPDPTR (PL_savestack[--PL_savestack_ix].any_dptr) #define SSPOPDXPTR (PL_savestack[--PL_savestack_ix].any_dxptr) /* =for apidoc_section $callback =for apidoc Amns||SAVETMPS Opening bracket for temporaries on a callback. See C> and L. =for apidoc Amns||FREETMPS Closing bracket for temporaries on a callback. See C> and L. =for apidoc Amns||ENTER Opening bracket on a callback. See C> and L. =for apidoc Amns||LEAVE Closing bracket on a callback. See C> and L. =for apidoc Ams||ENTER_with_name|"name" Same as C>, but when debugging is enabled it also associates the given literal string with the new scope. =for apidoc Ams||LEAVE_with_name|"name" Same as C>, but when debugging is enabled it first checks that the scope has the given name. C must be a literal string. =cut */ #define SAVETMPS Perl_savetmps(aTHX) #define FREETMPS if (PL_tmps_ix > PL_tmps_floor) free_tmps() #ifdef DEBUGGING #define ENTER \ STMT_START { \ push_scope(); \ DEBUG_SCOPE("ENTER") \ } STMT_END #define LEAVE \ STMT_START { \ DEBUG_SCOPE("LEAVE") \ pop_scope(); \ } STMT_END #define ENTER_with_name(name) \ STMT_START { \ push_scope(); \ if (PL_scopestack_name) \ PL_scopestack_name[PL_scopestack_ix-1] = ASSERT_IS_LITERAL(name);\ DEBUG_SCOPE("ENTER \"" name "\"") \ } STMT_END #define LEAVE_with_name(name) \ STMT_START { \ DEBUG_SCOPE("LEAVE \"" name "\"") \ if (PL_scopestack_name) { \ CLANG_DIAG_IGNORE_STMT(-Wstring-compare); \ assert(((char*)PL_scopestack_name[PL_scopestack_ix-1] \ == (char*)ASSERT_IS_LITERAL(name)) \ || strEQ(PL_scopestack_name[PL_scopestack_ix-1], name)); \ CLANG_DIAG_RESTORE_STMT; \ } \ pop_scope(); \ } STMT_END #else #define ENTER push_scope() #define LEAVE pop_scope() #define ENTER_with_name(name) ENTER #define LEAVE_with_name(name) LEAVE #endif #define LEAVE_SCOPE(old) STMT_START { \ if (PL_savestack_ix > old) leave_scope(old); \ } STMT_END #define SAVEI8(i) save_I8((I8*)&(i)) #define SAVEI16(i) save_I16((I16*)&(i)) #define SAVEI32(i) save_I32((I32*)&(i)) #define SAVEINT(i) save_int((int*)&(i)) #define SAVEIV(i) save_iv((IV*)&(i)) #define SAVELONG(l) save_long((long*)&(l)) #define SAVESTRLEN(l) Perl_save_strlen(aTHX_ (STRLEN*)&(l)) #define SAVEBOOL(b) save_bool(&(b)) #define SAVESPTR(s) save_sptr((SV**)&(s)) #define SAVEPPTR(s) save_pptr((char**)&(s)) #define SAVEVPTR(s) save_vptr((void*)&(s)) #define SAVEPADSVANDMORTALIZE(s) save_padsv_and_mortalize(s) #define SAVEFREESV(s) save_freesv(MUTABLE_SV(s)) #define SAVEFREEPADNAME(s) save_pushptr((void *)(s), SAVEt_FREEPADNAME) #define SAVEMORTALIZESV(s) save_mortalizesv(MUTABLE_SV(s)) #define SAVEFREEOP(o) save_freeop((OP*)(o)) #define SAVEFREEPV(p) save_freepv((char*)(p)) #define SAVECLEARSV(sv) save_clearsv((SV**)&(sv)) #define SAVEGENERICSV(s) save_generic_svref((SV**)&(s)) #define SAVEGENERICPV(s) save_generic_pvref((char**)&(s)) #define SAVESHAREDPV(s) save_shared_pvref((char**)&(s)) #define SAVESETSVFLAGS(sv,mask,val) save_set_svflags(sv,mask,val) #define SAVEFREECOPHH(h) save_pushptr((void *)(h), SAVEt_FREECOPHH) #define SAVEDELETE(h,k,l) \ save_delete(MUTABLE_HV(h), (char*)(k), (I32)(l)) #define SAVEHDELETE(h,s) \ save_hdelete(MUTABLE_HV(h), (s)) #define SAVEADELETE(a,k) \ save_adelete(MUTABLE_AV(a), (SSize_t)(k)) #define SAVEDESTRUCTOR(f,p) \ save_destructor((DESTRUCTORFUNC_NOCONTEXT_t)(f), (void*)(p)) #define SAVEDESTRUCTOR_X(f,p) \ save_destructor_x((DESTRUCTORFUNC_t)(f), (void*)(p)) #define SAVESTACK_POS() \ STMT_START { \ dSS_ADD; \ SS_ADD_INT(PL_stack_sp - PL_stack_base); \ SS_ADD_UV(SAVEt_STACK_POS); \ SS_ADD_END(2); \ } STMT_END #define SAVEOP() save_op() #define SAVEHINTS() save_hints() #define SAVECOMPPAD() save_pushptr(MUTABLE_SV(PL_comppad), SAVEt_COMPPAD) #define SAVESWITCHSTACK(f,t) \ STMT_START { \ save_pushptrptr(MUTABLE_SV(f), MUTABLE_SV(t), SAVEt_SAVESWITCHSTACK); \ SWITCHSTACK((f),(t)); \ PL_curstackinfo->si_stack = (t); \ } STMT_END /* Need to do the cop warnings like this, rather than a "SAVEFREESHAREDPV", because realloc() means that the value can actually change. Possibly could have done savefreesharedpvREF, but this way actually seems cleaner, as it simplifies the code that does the saves, and reduces the load on the save stack. */ #define SAVECOMPILEWARNINGS() save_pushptr(PL_compiling.cop_warnings, SAVEt_COMPILE_WARNINGS) #define SAVEPARSER(p) save_pushptr((p), SAVEt_PARSER) #ifdef USE_ITHREADS # define SAVECOPSTASH_FREE(c) SAVEIV((c)->cop_stashoff) # define SAVECOPFILE(c) SAVEPPTR(CopFILE(c)) # define SAVECOPFILE_FREE(c) SAVESHAREDPV(CopFILE(c)) #else # /* XXX not refcounted */ # define SAVECOPSTASH_FREE(c) SAVESPTR(CopSTASH(c)) # define SAVECOPFILE(c) SAVESPTR(CopFILEGV(c)) # define SAVECOPFILE_FREE(c) SAVEGENERICSV(CopFILEGV(c)) #endif #define SAVECOPLINE(c) SAVEI32(CopLINE(c)) /* =for apidoc_section $stack =for apidoc Am|I32|SSNEW |Size_t size =for apidoc_item | |SSNEWa |Size_t_size|Size_t align =for apidoc_item | |SSNEWt |Size_t size|type =for apidoc_item | |SSNEWat|Size_t_size|type|Size_t align These temporarily allocates data on the savestack, returning an I32 index into the savestack, because a pointer would get broken if the savestack is moved on reallocation. Use L> to convert the returned index into a pointer. The forms differ in that plain C allocates C bytes; C and C allocate C objects, each of which is type C; and and C make sure to align the new data to an C boundary. The most useful value for the alignment is likely to be L>. The alignment will be preserved through savestack reallocation B if realloc returns data aligned to a size divisible by "align"! =for apidoc Am|type |SSPTR |I32 index|type =for apidoc_item|type *|SSPTRt|I32 index|type These convert the C returned by L/> and kin into actual pointers. The difference is that C casts the result to C, and C casts it to a pointer of that C. =cut */ #define SSNEW(size) Perl_save_alloc(aTHX_ (size), 0) #define SSNEWt(n,t) SSNEW((n)*sizeof(t)) #define SSNEWa(size,align) Perl_save_alloc(aTHX_ (size), \ (I32)(align - ((size_t)((caddr_t)&PL_savestack[PL_savestack_ix]) % align)) % align) #define SSNEWat(n,t,align) SSNEWa((n)*sizeof(t), align) #define SSPTR(off,type) ((type) ((char*)PL_savestack + off)) #define SSPTRt(off,type) ((type*) ((char*)PL_savestack + off)) #define save_freesv(op) save_pushptr((void *)(op), SAVEt_FREESV) #define save_mortalizesv(op) save_pushptr((void *)(op), SAVEt_MORTALIZESV) # define save_freeop(op) \ STMT_START { \ OP * const _o = (OP *)(op); \ assert(!_o->op_savefree); \ _o->op_savefree = 1; \ save_pushptr((void *)(_o), SAVEt_FREEOP); \ } STMT_END #define save_freepv(pv) save_pushptr((void *)(pv), SAVEt_FREEPV) /* =for apidoc_section $callback =for apidoc save_op Implements C. =cut */ #define save_op() save_pushptr((void *)(PL_op), SAVEt_OP) /* * ex: set ts=8 sts=4 sw=4 et: */