X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/3f774658ecc4b04691265c9db31d70a4a611b290..9a2fefd6ac80d3f6deaec2c6314b286ac7bb8e7e:/scope.h diff --git a/scope.h b/scope.h index 9a24ac9..ad276a9 100644 --- a/scope.h +++ b/scope.h @@ -1,193 +1,315 @@ /* scope.h * - * Copyright (c) 1997-2002, Larry Wall + * 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. * */ -#define SAVEt_ITEM 0 -#define SAVEt_SV 1 -#define SAVEt_AV 2 -#define SAVEt_HV 3 -#define SAVEt_INT 4 -#define SAVEt_LONG 5 -#define SAVEt_I32 6 -#define SAVEt_IV 7 -#define SAVEt_SPTR 8 -#define SAVEt_APTR 9 -#define SAVEt_HPTR 10 -#define SAVEt_PPTR 11 -#define SAVEt_NSTAB 12 -#define SAVEt_SVREF 13 -#define SAVEt_GP 14 -#define SAVEt_FREESV 15 -#define SAVEt_FREEOP 16 -#define SAVEt_FREEPV 17 -#define SAVEt_CLEARSV 18 -#define SAVEt_DELETE 19 -#define SAVEt_DESTRUCTOR 20 -#define SAVEt_REGCONTEXT 21 -#define SAVEt_STACK_POS 22 -#define SAVEt_I16 23 -#define SAVEt_AELEM 24 -#define SAVEt_HELEM 25 -#define SAVEt_OP 26 -#define SAVEt_HINTS 27 -#define SAVEt_ALLOC 28 -#define SAVEt_GENERIC_SVREF 29 -#define SAVEt_DESTRUCTOR_X 30 -#define SAVEt_VPTR 31 -#define SAVEt_I8 32 -#define SAVEt_COMPPAD 33 -#define SAVEt_GENERIC_PVREF 34 -#define SAVEt_PADSV 35 -#define SAVEt_MORTALIZESV 36 -#define SAVEt_SHARED_PVREF 37 -#define SAVEt_BOOL 38 +/* *** 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 + +/* two args */ + +#define SAVEt_AV 23 +#define SAVEt_DESTRUCTOR 24 +#define SAVEt_DESTRUCTOR_X 25 +#define SAVEt_GENERIC_PVREF 26 +#define SAVEt_GENERIC_SVREF 27 +#define SAVEt_GP 28 +#define SAVEt_GVSV 29 +#define SAVEt_HINTS 30 +#define SAVEt_HPTR 31 +#define SAVEt_HV 32 +#define SAVEt_I32 33 +#define SAVEt_INT 34 +#define SAVEt_ITEM 35 +#define SAVEt_IV 36 +#define SAVEt_LONG 37 +#define SAVEt_PPTR 38 +#define SAVEt_SAVESWITCHSTACK 39 +#define SAVEt_SHARED_PVREF 40 +#define SAVEt_SPTR 41 +#define SAVEt_STRLEN 42 +#define SAVEt_SV 43 +#define SAVEt_SVREF 44 +#define SAVEt_VPTR 45 +#define SAVEt_ADELETE 46 +#define SAVEt_APTR 47 + +/* three args */ + +#define SAVEt_HELEM 48 +#define SAVEt_PADSV_AND_MORTALIZE 49 +#define SAVEt_SET_SVFLAGS 50 +#define SAVEt_GVSLOT 51 +#define SAVEt_AELEM 52 +#define SAVEt_DELETE 53 + + +#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 -#define SSCHECK(need) if (PL_savestack_ix + need > PL_savestack_max) savestack_grow() +/* 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 ensured + * bt 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) + /* =head1 Callback Functions =for apidoc Ams||SAVETMPS -Opening bracket for temporaries on a callback. See C and +Opening bracket for temporaries on a callback. See C> and L. =for apidoc Ams||FREETMPS -Closing bracket for temporaries on a callback. See C and +Closing bracket for temporaries on a callback. See C> and L. =for apidoc Ams||ENTER -Opening bracket on a callback. See C and L. +Opening bracket on a callback. See C> and L. =for apidoc Ams||LEAVE -Closing bracket on a callback. See C and L. +Closing bracket on a callback. See C> and L. + +=over + +=item ENTER_with_name(name) + +Same as C, but when debugging is enabled it also associates the +given literal string with the new scope. + +=item 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 C-terminated literal string. + +=back =cut */ -#define SAVETMPS save_int((int*)&PL_tmps_floor), PL_tmps_floor = PL_tmps_ix +#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_l(WITH_THR(Perl_deb(aTHX_ "ENTER scope %ld at %s:%d\n", \ - PL_scopestack_ix, __FILE__, __LINE__))); \ + DEBUG_SCOPE("ENTER") \ } STMT_END #define LEAVE \ STMT_START { \ - DEBUG_l(WITH_THR(Perl_deb(aTHX_ "LEAVE scope %ld at %s:%d\n", \ - PL_scopestack_ix, __FILE__, __LINE__))); \ + 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] = name; \ + DEBUG_SCOPE("ENTER \"" name "\"") \ + } STMT_END +#define LEAVE_with_name(name) \ + STMT_START { \ + DEBUG_SCOPE("LEAVE \"" name "\"") \ + if (PL_scopestack_name) { \ + assert(((char*)PL_scopestack_name[PL_scopestack_ix-1] \ + == (char*)name) \ + || strEQ(PL_scopestack_name[PL_scopestack_ix-1], name)); \ + } \ + 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) if (PL_savestack_ix > old) leave_scope(old) +#define LEAVE_SCOPE(old) STMT_START { \ + if (PL_savestack_ix > old) leave_scope(old); \ + } STMT_END -/* - * Not using SOFT_CAST on SAVESPTR, SAVEGENERICSV and SAVEFREESV - * because these are used for several kinds of pointer values - */ -#define SAVEI8(i) save_I8(SOFT_CAST(I8*)&(i)) -#define SAVEI16(i) save_I16(SOFT_CAST(I16*)&(i)) -#define SAVEI32(i) save_I32(SOFT_CAST(I32*)&(i)) -#define SAVEINT(i) save_int(SOFT_CAST(int*)&(i)) -#define SAVEIV(i) save_iv(SOFT_CAST(IV*)&(i)) -#define SAVELONG(l) save_long(SOFT_CAST(long*)&(l)) -#define SAVEBOOL(b) save_bool(SOFT_CAST(bool*)&(b)) +#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 SAVEBOOL(b) save_bool(&(b)) #define SAVESPTR(s) save_sptr((SV**)&(s)) -#define SAVEPPTR(s) save_pptr(SOFT_CAST(char**)&(s)) +#define SAVEPPTR(s) save_pptr((char**)&(s)) #define SAVEVPTR(s) save_vptr((void*)&(s)) -#define SAVEPADSV(s) save_padsv(s) -#define SAVEFREESV(s) save_freesv((SV*)(s)) -#define SAVEMORTALIZESV(s) save_mortalizesv((SV*)(s)) -#define SAVEFREEOP(o) save_freeop(SOFT_CAST(OP*)(o)) -#define SAVEFREEPV(p) save_freepv(SOFT_CAST(char*)(p)) -#define SAVECLEARSV(sv) save_clearsv(SOFT_CAST(SV**)&(sv)) +#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(SOFT_CAST(HV*)(h), SOFT_CAST(char*)(k), (I32)(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), SOFT_CAST(void*)(p)) + save_destructor((DESTRUCTORFUNC_NOCONTEXT_t)(f), (void*)(p)) #define SAVEDESTRUCTOR_X(f,p) \ - save_destructor_x((DESTRUCTORFUNC_t)(f), SOFT_CAST(void*)(p)) + save_destructor_x((DESTRUCTORFUNC_t)(f), (void*)(p)) #define SAVESTACK_POS() \ - STMT_START { \ - SSCHECK(2); \ - SSPUSHINT(PL_stack_sp - PL_stack_base); \ - SSPUSHINT(SAVEt_STACK_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() \ - STMT_START { \ - if (PL_hints & HINT_LOCALIZE_HH) \ - save_hints(); \ - else { \ - SSCHECK(2); \ - SSPUSHINT(PL_hints); \ - SSPUSHINT(SAVEt_HINTS); \ - } \ - } STMT_END +#define SAVEHINTS() save_hints() -#define SAVECOMPPAD() \ - STMT_START { \ - SSCHECK(2); \ - SSPUSHPTR((SV*)PL_comppad); \ - SSPUSHINT(SAVEt_COMPPAD); \ +#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(c) SAVEPPTR(CopSTASHPV(c)) -# define SAVECOPSTASH_FREE(c) SAVESHAREDPV(CopSTASHPV(c)) +# define SAVECOPSTASH_FREE(c) SAVEIV((c)->cop_stashoff) # define SAVECOPFILE(c) SAVEPPTR(CopFILE(c)) # define SAVECOPFILE_FREE(c) SAVESHAREDPV(CopFILE(c)) #else -# define SAVECOPSTASH(c) SAVESPTR(CopSTASH(c)) -# define SAVECOPSTASH_FREE(c) SAVECOPSTASH(c) /* XXX not refcounted */ +# /* 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) SAVEI16(CopLINE(c)) +#define SAVECOPLINE(c) SAVEI32(CopLINE(c)) /* SSNEW() temporarily allocates a specified number of bytes of data on the - * savestack. It returns an integer index into the savestack, because a + * savestack. It returns an I32 index into the savestack, because a * pointer would get broken if the savestack is moved on reallocation. * SSNEWa() works like SSNEW(), but also aligns the data to the specified * number of bytes. MEM_ALIGNBYTES is perhaps the most useful. The - * alignment will be preserved therough savestack reallocation *only* if - * realloc returns data aligned to a size divisible by `align'! + * alignment will be preserved through savestack reallocation *only* if + * realloc returns data aligned to a size divisible by "align"! * * SSPTR() converts the index returned by SSNEW/SSNEWa() into a pointer. */ @@ -195,206 +317,25 @@ Closing bracket on a callback. See C and L. #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), \ - (align - ((int)((caddr_t)&PL_savestack[PL_savestack_ix]) % align)) % align) + (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)) -/* A jmpenv packages the state required to perform a proper non-local jump. - * Note that there is a start_env initialized when perl starts, and top_env - * points to this initially, so top_env should always be non-null. - * - * Existence of a non-null top_env->je_prev implies it is valid to call - * longjmp() at that runlevel (we make sure start_env.je_prev is always - * null to ensure this). - * - * je_mustcatch, when set at any runlevel to TRUE, means eval ops must - * establish a local jmpenv to handle exception traps. Care must be taken - * to restore the previous value of je_mustcatch before exiting the - * stack frame iff JMPENV_PUSH was not called in that stack frame. - * GSAR 97-03-27 - */ - -struct jmpenv { - struct jmpenv * je_prev; - Sigjmp_buf je_buf; /* only for use if !je_throw */ - int je_ret; /* last exception thrown */ - bool je_mustcatch; /* need to call longjmp()? */ -#ifdef PERL_FLEXIBLE_EXCEPTIONS - void (*je_throw)(int v); /* last for bincompat */ - bool je_noset; /* no need for setjmp() */ -#endif -}; +#define save_freesv(op) save_pushptr((void *)(op), SAVEt_FREESV) +#define save_mortalizesv(op) save_pushptr((void *)(op), SAVEt_MORTALIZESV) -typedef struct jmpenv JMPENV; - -#ifdef OP_IN_REGISTER -#define OP_REG_TO_MEM PL_opsave = op -#define OP_MEM_TO_REG op = PL_opsave -#else -#define OP_REG_TO_MEM NOOP -#define OP_MEM_TO_REG NOOP -#endif - -/* - * How to build the first jmpenv. - * - * top_env needs to be non-zero. It points to an area - * in which longjmp() stuff is stored, as C callstack - * info there at least is thread specific this has to - * be per-thread. Otherwise a 'die' in a thread gives - * that thread the C stack of last thread to do an eval {}! - */ - -#define JMPENV_BOOTSTRAP \ - STMT_START { \ - Zero(&PL_start_env, 1, JMPENV); \ - PL_start_env.je_ret = -1; \ - PL_start_env.je_mustcatch = TRUE; \ - PL_top_env = &PL_start_env; \ +# 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 - -#ifdef PERL_FLEXIBLE_EXCEPTIONS +#define save_freepv(pv) save_pushptr((void *)(pv), SAVEt_FREEPV) +#define save_op() save_pushptr((void *)(PL_op), SAVEt_OP) /* - * These exception-handling macros are split up to - * ease integration with C++ exceptions. - * - * To use C++ try+catch to catch Perl exceptions, an extension author - * needs to first write an extern "C" function to throw an appropriate - * exception object; typically it will be or contain an integer, - * because Perl's internals use integers to track exception types: - * extern "C" { static void thrower(int i) { throw i; } } - * - * Then (as shown below) the author needs to use, not the simple - * JMPENV_PUSH, but several of its constitutent macros, to arrange for - * the Perl internals to call thrower() rather than longjmp() to - * report exceptions: - * - * dJMPENV; - * JMPENV_PUSH_INIT(thrower); - * try { - * ... stuff that may throw exceptions ... - * } - * catch (int why) { // or whatever matches thrower() - * JMPENV_POST_CATCH; - * EXCEPT_SET(why); - * switch (why) { - * ... // handle various Perl exception codes - * } - * } - * JMPENV_POP; // don't forget this! - */ - -/* - * Function that catches/throws, and its callback for the - * body of protected processing. + * ex: set ts=8 sts=4 sw=4 et: */ -typedef void *(CPERLscope(*protect_body_t)) (pTHX_ va_list); -typedef void *(CPERLscope(*protect_proc_t)) (pTHX_ volatile JMPENV *pcur_env, - int *, protect_body_t, ...); - -#define dJMPENV JMPENV cur_env; \ - volatile JMPENV *pcur_env = ((cur_env.je_noset = 0),&cur_env) - -#define JMPENV_PUSH_INIT_ENV(ce,THROWFUNC) \ - STMT_START { \ - (ce).je_throw = (THROWFUNC); \ - (ce).je_ret = -1; \ - (ce).je_mustcatch = FALSE; \ - (ce).je_prev = PL_top_env; \ - PL_top_env = &(ce); \ - OP_REG_TO_MEM; \ - } STMT_END - -#define JMPENV_PUSH_INIT(THROWFUNC) JMPENV_PUSH_INIT_ENV(*(JMPENV*)pcur_env,THROWFUNC) - -#define JMPENV_POST_CATCH_ENV(ce) \ - STMT_START { \ - OP_MEM_TO_REG; \ - PL_top_env = &(ce); \ - } STMT_END - -#define JMPENV_POST_CATCH JMPENV_POST_CATCH_ENV(*(JMPENV*)pcur_env) - -#define JMPENV_PUSH_ENV(ce,v) \ - STMT_START { \ - if (!(ce).je_noset) { \ - DEBUG_l(Perl_deb(aTHX_ "Setting up jumplevel %p, was %p\n", \ - ce, PL_top_env)); \ - JMPENV_PUSH_INIT_ENV(ce,NULL); \ - EXCEPT_SET_ENV(ce,PerlProc_setjmp((ce).je_buf, SCOPE_SAVES_SIGNAL_MASK));\ - (ce).je_noset = 1; \ - } \ - else \ - EXCEPT_SET_ENV(ce,0); \ - JMPENV_POST_CATCH_ENV(ce); \ - (v) = EXCEPT_GET_ENV(ce); \ - } STMT_END - -#define JMPENV_PUSH(v) JMPENV_PUSH_ENV(*(JMPENV*)pcur_env,v) - -#define JMPENV_POP_ENV(ce) \ - STMT_START { \ - if (PL_top_env == &(ce)) \ - PL_top_env = (ce).je_prev; \ - } STMT_END - -#define JMPENV_POP JMPENV_POP_ENV(*(JMPENV*)pcur_env) - -#define JMPENV_JUMP(v) \ - STMT_START { \ - OP_REG_TO_MEM; \ - if (PL_top_env->je_prev) { \ - if (PL_top_env->je_throw) \ - PL_top_env->je_throw(v); \ - else \ - PerlProc_longjmp(PL_top_env->je_buf, (v)); \ - } \ - if ((v) == 2) \ - PerlProc_exit(STATUS_NATIVE_EXPORT); \ - PerlIO_printf(Perl_error_log, "panic: top_env\n"); \ - PerlProc_exit(1); \ - } STMT_END - -#define EXCEPT_GET_ENV(ce) ((ce).je_ret) -#define EXCEPT_GET EXCEPT_GET_ENV(*(JMPENV*)pcur_env) -#define EXCEPT_SET_ENV(ce,v) ((ce).je_ret = (v)) -#define EXCEPT_SET(v) EXCEPT_SET_ENV(*(JMPENV*)pcur_env,v) - -#else /* !PERL_FLEXIBLE_EXCEPTIONS */ - -#define dJMPENV JMPENV cur_env - -#define JMPENV_PUSH(v) \ - STMT_START { \ - DEBUG_l(Perl_deb(aTHX_ "Setting up jumplevel %p, was %p\n", \ - &cur_env, PL_top_env)); \ - cur_env.je_prev = PL_top_env; \ - OP_REG_TO_MEM; \ - cur_env.je_ret = PerlProc_setjmp(cur_env.je_buf, SCOPE_SAVES_SIGNAL_MASK); \ - OP_MEM_TO_REG; \ - PL_top_env = &cur_env; \ - cur_env.je_mustcatch = FALSE; \ - (v) = cur_env.je_ret; \ - } STMT_END - -#define JMPENV_POP \ - STMT_START { PL_top_env = cur_env.je_prev; } STMT_END - -#define JMPENV_JUMP(v) \ - STMT_START { \ - OP_REG_TO_MEM; \ - if (PL_top_env->je_prev) \ - PerlProc_longjmp(PL_top_env->je_buf, (v)); \ - if ((v) == 2) \ - PerlProc_exit(STATUS_NATIVE_EXPORT); \ - PerlIO_printf(PerlIO_stderr(), "panic: top_env\n"); \ - PerlProc_exit(1); \ - } STMT_END - -#endif /* PERL_FLEXIBLE_EXCEPTIONS */ - -#define CATCH_GET (PL_top_env->je_mustcatch) -#define CATCH_SET(v) (PL_top_env->je_mustcatch = (v))