X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/1d651c14520f7db44adb51b335f0fd87f91e8421..36df99d62e5fb6553737ac83b8d35e75836213ae:/scope.h?ds=sidebyside diff --git a/scope.h b/scope.h index 8358c54..f0abb72 100644 --- a/scope.h +++ b/scope.h @@ -28,6 +28,17 @@ #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 + +#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() #define SSPUSHINT(i) (PL_savestack[PL_savestack_ix++].any_i32 = (I32)(i)) @@ -35,11 +46,33 @@ #define SSPUSHIV(i) (PL_savestack[PL_savestack_ix++].any_iv = (IV)(i)) #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)) #define SSPOPINT (PL_savestack[--PL_savestack_ix].any_i32) #define SSPOPLONG (PL_savestack[--PL_savestack_ix].any_long) #define SSPOPIV (PL_savestack[--PL_savestack_ix].any_iv) #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 +L. + +=for apidoc Ams||FREETMPS +Closing bracket for temporaries on a callback. See C and +L. + +=for apidoc Ams||ENTER +Opening bracket on a callback. See C and L. + +=for apidoc Ams||LEAVE +Closing bracket on a callback. See C and L. + +=cut +*/ #define SAVETMPS save_int((int*)&PL_tmps_floor), PL_tmps_floor = PL_tmps_ix #define FREETMPS if (PL_tmps_ix > PL_tmps_floor) free_tmps() @@ -48,12 +81,12 @@ #define ENTER \ STMT_START { \ push_scope(); \ - DEBUG_l(WITH_THR(deb("ENTER scope %ld at %s:%d\n", \ + DEBUG_l(WITH_THR(Perl_deb(aTHX_ "ENTER scope %ld at %s:%d\n", \ PL_scopestack_ix, __FILE__, __LINE__))); \ } STMT_END #define LEAVE \ STMT_START { \ - DEBUG_l(WITH_THR(deb("LEAVE scope %ld at %s:%d\n", \ + DEBUG_l(WITH_THR(Perl_deb(aTHX_ "LEAVE scope %ld at %s:%d\n", \ PL_scopestack_ix, __FILE__, __LINE__))); \ pop_scope(); \ } STMT_END @@ -67,6 +100,7 @@ * 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)) @@ -74,24 +108,22 @@ #define SAVELONG(l) save_long(SOFT_CAST(long*)&(l)) #define SAVESPTR(s) save_sptr((SV**)&(s)) #define SAVEPPTR(s) save_pptr(SOFT_CAST(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 SAVEGENERICSV(s) save_generic_svref((SV**)&(s)) +#define SAVEGENERICPV(s) save_generic_pvref((char**)&(s)) #define SAVEDELETE(h,k,l) \ save_delete(SOFT_CAST(HV*)(h), SOFT_CAST(char*)(k), (I32)(l)) -#ifdef PERL_OBJECT -#define CALLDESTRUCTOR this->*SSPOPDPTR #define SAVEDESTRUCTOR(f,p) \ - save_destructor((DESTRUCTORFUNC)(FUNC_NAME_TO_PTR(f)), \ - SOFT_CAST(void*)(p)) -#else -#define CALLDESTRUCTOR *SSPOPDPTR -#define SAVEDESTRUCTOR(f,p) \ - save_destructor(SOFT_CAST(void(*)_((void*)))(FUNC_NAME_TO_PTR(f)), \ - SOFT_CAST(void*)(p)) -#endif + save_destructor((DESTRUCTORFUNC_NOCONTEXT_t)(f), SOFT_CAST(void*)(p)) + +#define SAVEDESTRUCTOR_X(f,p) \ + save_destructor_x((DESTRUCTORFUNC_t)(f), SOFT_CAST(void*)(p)) #define SAVESTACK_POS() \ STMT_START { \ @@ -113,6 +145,33 @@ } \ } STMT_END +#define SAVECOMPPAD() \ + STMT_START { \ + if (PL_comppad && PL_curpad == AvARRAY(PL_comppad)) { \ + SSCHECK(2); \ + SSPUSHPTR((SV*)PL_comppad); \ + SSPUSHINT(SAVEt_COMPPAD); \ + } \ + else { \ + SAVEVPTR(PL_curpad); \ + SAVESPTR(PL_comppad); \ + } \ + } STMT_END + +#ifdef USE_ITHREADS +# define SAVECOPSTASH(c) SAVEPPTR(CopSTASHPV(c)) +# define SAVECOPSTASH_FREE(c) SAVEGENERICPV(CopSTASHPV(c)) +# define SAVECOPFILE(c) SAVEPPTR(CopFILE(c)) +# define SAVECOPFILE_FREE(c) SAVEGENERICPV(CopFILE(c)) +#else +# define SAVECOPSTASH(c) SAVESPTR(CopSTASH(c)) +# define SAVECOPSTASH_FREE(c) SAVECOPSTASH(c) /* XXX not refcounted */ +# define SAVECOPFILE(c) SAVESPTR(CopFILEGV(c)) +# define SAVECOPFILE_FREE(c) SAVEGENERICSV(CopFILEGV(c)) +#endif + +#define SAVECOPLINE(c) SAVEI16(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 * pointer would get broken if the savestack is moved on reallocation. @@ -124,11 +183,14 @@ * SSPTR() converts the index returned by SSNEW/SSNEWa() into a pointer. */ -#define SSNEW(size) save_alloc(size, 0) -#define SSNEWa(size,align) save_alloc(size, \ +#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) +#define SSNEWat(n,t,align) SSNEWa((n)*sizeof(t), align) -#define SSPTR(off,type) ((type) ((char*)PL_savestack + off)) +#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 @@ -150,17 +212,21 @@ struct jmpenv { 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 }; typedef struct jmpenv JMPENV; -/* - * Function that catches/throws, and its callback for the - * body of protected processing. - */ -typedef void *(CPERLscope(*protect_body_t)) _((va_list)); -typedef void *(CPERLscope(*protect_proc_t)) _((int *, protect_body_t, ...)); +#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. @@ -174,20 +240,13 @@ typedef void *(CPERLscope(*protect_proc_t)) _((int *, protect_body_t, ...)); #define JMPENV_BOOTSTRAP \ STMT_START { \ - PL_start_env.je_prev = NULL; \ - PL_start_env.je_throw = NULL; \ + Zero(&PL_start_env, 1, JMPENV); \ PL_start_env.je_ret = -1; \ PL_start_env.je_mustcatch = TRUE; \ PL_top_env = &PL_start_env; \ } STMT_END -#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 +#ifdef PERL_FLEXIBLE_EXCEPTIONS /* * These exception-handling macros are split up to @@ -219,43 +278,61 @@ typedef void *(CPERLscope(*protect_proc_t)) _((int *, protect_body_t, ...)); * JMPENV_POP; // don't forget this! */ -#define dJMPENV JMPENV cur_env +/* + * Function that catches/throws, and its callback for the + * body of protected processing. + */ +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(cur_env,THROWFUNC) \ +#define JMPENV_PUSH_INIT_ENV(ce,THROWFUNC) \ STMT_START { \ - cur_env.je_throw = (THROWFUNC); \ - cur_env.je_ret = -1; \ - cur_env.je_mustcatch = FALSE; \ - cur_env.je_prev = PL_top_env; \ - PL_top_env = &cur_env; \ + (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(cur_env,THROWFUNC) +#define JMPENV_PUSH_INIT(THROWFUNC) JMPENV_PUSH_INIT_ENV(*(JMPENV*)pcur_env,THROWFUNC) -#define JMPENV_POST_CATCH_ENV(cur_env) \ +#define JMPENV_POST_CATCH_ENV(ce) \ STMT_START { \ OP_MEM_TO_REG; \ - PL_top_env = &cur_env; \ + PL_top_env = &(ce); \ } STMT_END -#define JMPENV_POST_CATCH JMPENV_POST_CATCH_ENV(cur_env) +#define JMPENV_POST_CATCH JMPENV_POST_CATCH_ENV(*(JMPENV*)pcur_env) - -#define JMPENV_PUSH_ENV(cur_env,v) \ - STMT_START { \ - JMPENV_PUSH_INIT_ENV(cur_env,NULL); \ - EXCEPT_SET_ENV(cur_env,PerlProc_setjmp(cur_env.je_buf, 1)); \ - JMPENV_POST_CATCH_ENV(cur_env); \ - (v) = EXCEPT_GET_ENV(cur_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(cur_env,v) +#define JMPENV_PUSH(v) JMPENV_PUSH_ENV(*(JMPENV*)pcur_env,v) -#define JMPENV_POP_ENV(cur_env) \ - STMT_START { PL_top_env = cur_env.je_prev; } STMT_END +#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(cur_env) +#define JMPENV_POP JMPENV_POP_ENV(*(JMPENV*)pcur_env) #define JMPENV_JUMP(v) \ STMT_START { \ @@ -268,15 +345,47 @@ typedef void *(CPERLscope(*protect_proc_t)) _((int *, protect_body_t, ...)); } \ 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 -#define EXCEPT_GET_ENV(cur_env) (cur_env.je_ret) -#define EXCEPT_GET EXCEPT_GET_ENV(cur_env) -#define EXCEPT_SET_ENV(cur_env,v) (cur_env.je_ret = (v)) -#define EXCEPT_SET(v) EXCEPT_SET_ENV(cur_env,v) +#endif /* PERL_FLEXIBLE_EXCEPTIONS */ -#define CATCH_GET (PL_top_env->je_mustcatch) -#define CATCH_SET(v) (PL_top_env->je_mustcatch = (v)) - +#define CATCH_GET (PL_top_env->je_mustcatch) +#define CATCH_SET(v) (PL_top_env->je_mustcatch = (v))