+/* scope.h
+ *
+ * Copyright (C) 1993, 1994, 1996, 1997, 1998, 1999,
+ * 2000, 2001, 2002, 2004, 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_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
+#define SAVEt_SET_SVFLAGS 39
+#define SAVEt_SAVESWITCHSTACK 40
-#define SSCHECK(need) if (PL_savestack_ix + need > PL_savestack_max) savestack_grow()
+#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 SSGROW(need) if (PL_savestack_ix + (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 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 SSPOPBOOL (PL_savestack[--PL_savestack_ix].any_bool)
#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<FREETMPS> and
+L<perlcall>.
+
+=for apidoc Ams||FREETMPS
+Closing bracket for temporaries on a callback. See C<SAVETMPS> and
+L<perlcall>.
+
+=for apidoc Ams||ENTER
+Opening bracket on a callback. See C<LEAVE> and L<perlcall>.
+
+=for apidoc Ams||LEAVE
+Closing bracket on a callback. See C<ENTER> and L<perlcall>.
+
+=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()
#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
#else
* 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 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 SAVESHAREDPV(s) save_shared_pvref((char**)&(s))
+#define SAVESETSVFLAGS(sv,mask,val) save_set_svflags(sv,mask,val)
#define SAVEDELETE(h,k,l) \
save_delete(SOFT_CAST(HV*)(h), SOFT_CAST(char*)(k), (I32)(l))
-#ifdef PERL_OBJECT
-#define CALLDESTRUCTOR this->*SSPOPDPTR
-#else
-#define CALLDESTRUCTOR (*SSPOPDPTR)
-#endif
#define SAVEDESTRUCTOR(f,p) \
- save_destructor((DESTRUCTORFUNC_t)(FUNC_NAME_TO_PTR(f)), \
- SOFT_CAST(void*)(p))
+ 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 { \
#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_START { \
+ SSCHECK(3); \
+ if (PL_hints & HINT_LOCALIZE_HH) { \
+ SSPUSHPTR(GvHV(PL_hintgv)); \
+ GvHV(PL_hintgv) = newHVhv(GvHV(PL_hintgv)); \
+ } \
+ SSPUSHINT(PL_hints); \
+ SSPUSHINT(SAVEt_HINTS); \
+ } STMT_END
+
+#define SAVECOMPPAD() \
+ STMT_START { \
+ SSCHECK(2); \
+ SSPUSHPTR((SV*)PL_comppad); \
+ SSPUSHINT(SAVEt_COMPPAD); \
+ } STMT_END
+
+#define SAVESWITCHSTACK(f,t) \
+ STMT_START { \
+ SSCHECK(3); \
+ SSPUSHPTR((SV*)(f)); \
+ SSPUSHPTR((SV*)(t)); \
+ SSPUSHINT(SAVEt_SAVESWITCHSTACK); \
+ SWITCHSTACK((f),(t)); \
+ PL_curstackinfo->si_stack = (t); \
} STMT_END
+#ifdef USE_ITHREADS
+# define SAVECOPSTASH(c) SAVEPPTR(CopSTASHPV(c))
+# define SAVECOPSTASH_FREE(c) SAVESHAREDPV(CopSTASHPV(c))
+# 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 */
+# define SAVECOPFILE(c) SAVESPTR(CopFILEGV(c))
+# define SAVECOPFILE_FREE(c) SAVEGENERICSV(CopFILEGV(c))
+#endif
+
+#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
* pointer would get broken if the savestack is moved on reallocation.
* 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
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)) (pTHX_ va_list);
-typedef void *(CPERLscope(*protect_proc_t)) (pTHX_ 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.
#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
* 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 JMPENV_PUSH_INIT_ENV(cur_env,THROWFUNC) \
+#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 { \
- 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 { \
} \
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))
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