/* cv.h
*
- * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999,
- * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others
+ * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001,
+ * 2002, 2003, 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.
*
*/
-/* This structure must match XPVCV in B/C.pm and the beginning of XPVFM
- * in sv.h */
+/* This structure must the beginning of XPVFM in sv.h */
struct xpvcv {
- NV xnv_nv; /* numeric value, if any */
- STRLEN xpv_cur; /* length of xp_pv as a C string */
- STRLEN xpv_len; /* allocated size */
- union {
- IV xivu_iv; /* integer value or pv offset */
- UV xivu_uv;
- void * xivu_p1;
- } xiv_u;
- MAGIC* xmg_magic; /* magic for scalar array */
- HV* xmg_stash; /* class package */
-
- HV * xcv_stash;
- OP * xcv_start;
- OP * xcv_root;
- void (*xcv_xsub) (pTHX_ CV*);
- ANY xcv_xsubany;
- GV * xcv_gv;
- char * xcv_file;
- long xcv_depth; /* >= 2 indicates recursive call */
- PADLIST * xcv_padlist;
- CV * xcv_outside;
- cv_flags_t xcv_flags;
- U32 xcv_outside_seq; /* the COP sequence (at the point of our
- * compilation) in the lexically enclosing
- * sub */
+ _XPV_HEAD;
+ _XPVCV_COMMON;
+ I32 xcv_depth; /* >= 2 indicates recursive call */
};
/*
=for apidoc AmU||Nullcv
Null CV pointer.
+(deprecated - use C<(CV *)NULL> instead)
+
=head1 CV Manipulation Functions
=for apidoc Am|HV*|CvSTASH|CV* cv
=cut
*/
-#define Nullcv Null(CV*)
+#ifndef PERL_CORE
+# define Nullcv Null(CV*)
+#endif
-#define CvSTASH(sv) ((XPVCV*)SvANY(sv))->xcv_stash
-#define CvSTART(sv) ((XPVCV*)SvANY(sv))->xcv_start
-#define CvROOT(sv) ((XPVCV*)SvANY(sv))->xcv_root
-#define CvXSUB(sv) ((XPVCV*)SvANY(sv))->xcv_xsub
-#define CvXSUBANY(sv) ((XPVCV*)SvANY(sv))->xcv_xsubany
-#define CvGV(sv) ((XPVCV*)SvANY(sv))->xcv_gv
-#define CvFILE(sv) ((XPVCV*)SvANY(sv))->xcv_file
+#define CvSTASH(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_stash
+#define CvSTART(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_start_u.xcv_start
+#define CvROOT(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_root_u.xcv_root
+#define CvXSUB(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_root_u.xcv_xsub
+#define CvXSUBANY(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_start_u.xcv_xsubany
+#define CvGV(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_gv
+#define CvFILE(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_file
#ifdef USE_ITHREADS
# define CvFILE_set_from_cop(sv, cop) (CvFILE(sv) = savepv(CopFILE(cop)))
#else
# define CvFILE_set_from_cop(sv, cop) (CvFILE(sv) = CopFILE(cop))
#endif
#define CvFILEGV(sv) (gv_fetchfile(CvFILE(sv)))
-#define CvDEPTH(sv) ((XPVCV*)SvANY(sv))->xcv_depth
-#define CvPADLIST(sv) ((XPVCV*)SvANY(sv))->xcv_padlist
-#define CvOUTSIDE(sv) ((XPVCV*)SvANY(sv))->xcv_outside
-#define CvFLAGS(sv) ((XPVCV*)SvANY(sv))->xcv_flags
-#define CvOUTSIDE_SEQ(sv) ((XPVCV*)SvANY(sv))->xcv_outside_seq
-
-#define CVf_CLONE 0x0001 /* anon CV uses external lexicals */
-#define CVf_CLONED 0x0002 /* a clone of one of those */
-#define CVf_ANON 0x0004 /* CvGV() can't be trusted */
-#define CVf_OLDSTYLE 0x0008
-#define CVf_UNIQUE 0x0010 /* sub is only called once (eg PL_main_cv,
- * require, eval). Not to be confused
- * with the GVf_UNIQUE flag associated
- * with the :unique attribute */
-#define CVf_NODEBUG 0x0020 /* no DB::sub indirection for this CV
+#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
+# define CvDEPTH(sv) (*({const CV *const _cvdepth = (const CV *)sv; \
+ assert(SvTYPE(_cvdepth) == SVt_PVCV); \
+ &((XPVCV*)SvANY(_cvdepth))->xcv_depth; \
+ }))
+#else
+# define CvDEPTH(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_depth
+#endif
+#define CvPADLIST(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_padlist
+#define CvOUTSIDE(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_outside
+#define CvFLAGS(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_flags
+#define CvOUTSIDE_SEQ(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_outside_seq
+
+#define CVf_METHOD 0x0001 /* CV is explicitly marked as a method */
+#define CVf_LVALUE 0x0002 /* CV return value can be used as lvalue */
+#define CVf_CONST 0x0004 /* inlinable sub */
+#define CVf_ISXSUB 0x0008 /* CV is an XSUB, not pure perl. */
+
+#define CVf_WEAKOUTSIDE 0x0010 /* CvOUTSIDE isn't ref counted */
+#define CVf_CLONE 0x0020 /* anon CV uses external lexicals */
+#define CVf_CLONED 0x0040 /* a clone of one of those */
+#define CVf_ANON 0x0080 /* CV is not pointed to by a GV */
+#define CVf_UNIQUE 0x0100 /* sub is only called once (eg PL_main_cv,
+ * require, eval). */
+#define CVf_NODEBUG 0x0200 /* no DB::sub indirection for this CV
(esp. useful for special XSUBs) */
-#define CVf_METHOD 0x0040 /* CV is explicitly marked as a method */
-#define CVf_LOCKED 0x0080 /* CV locks itself or first arg on entry */
-#define CVf_LVALUE 0x0100 /* CV return value can be used as lvalue */
-#define CVf_CONST 0x0200 /* inlinable sub */
-#define CVf_WEAKOUTSIDE 0x0400 /* CvOUTSIDE isn't ref counted */
-#define CVf_ASSERTION 0x0800 /* CV called only when asserting */
+#define CVf_CVGV_RC 0x0400 /* CvGV is reference counted */
/* This symbol for optimised communication between toke.c and op.c: */
-#define CVf_BUILTIN_ATTRS (CVf_METHOD|CVf_LOCKED|CVf_LVALUE|CVf_ASSERTION)
+#define CVf_BUILTIN_ATTRS (CVf_METHOD|CVf_LVALUE)
#define CvCLONE(cv) (CvFLAGS(cv) & CVf_CLONE)
#define CvCLONE_on(cv) (CvFLAGS(cv) |= CVf_CLONE)
#define CvANON_on(cv) (CvFLAGS(cv) |= CVf_ANON)
#define CvANON_off(cv) (CvFLAGS(cv) &= ~CVf_ANON)
-#ifdef PERL_XSUB_OLDSTYLE
-#define CvOLDSTYLE(cv) (CvFLAGS(cv) & CVf_OLDSTYLE)
-#define CvOLDSTYLE_on(cv) (CvFLAGS(cv) |= CVf_OLDSTYLE)
-#define CvOLDSTYLE_off(cv) (CvFLAGS(cv) &= ~CVf_OLDSTYLE)
-#endif
-
#define CvUNIQUE(cv) (CvFLAGS(cv) & CVf_UNIQUE)
#define CvUNIQUE_on(cv) (CvFLAGS(cv) |= CVf_UNIQUE)
#define CvUNIQUE_off(cv) (CvFLAGS(cv) &= ~CVf_UNIQUE)
#define CvMETHOD_on(cv) (CvFLAGS(cv) |= CVf_METHOD)
#define CvMETHOD_off(cv) (CvFLAGS(cv) &= ~CVf_METHOD)
-#define CvLOCKED(cv) (CvFLAGS(cv) & CVf_LOCKED)
-#define CvLOCKED_on(cv) (CvFLAGS(cv) |= CVf_LOCKED)
-#define CvLOCKED_off(cv) (CvFLAGS(cv) &= ~CVf_LOCKED)
-
#define CvLVALUE(cv) (CvFLAGS(cv) & CVf_LVALUE)
#define CvLVALUE_on(cv) (CvFLAGS(cv) |= CVf_LVALUE)
#define CvLVALUE_off(cv) (CvFLAGS(cv) &= ~CVf_LVALUE)
-#define CvASSERTION(cv) (CvFLAGS(cv) & CVf_ASSERTION)
-#define CvASSERTION_on(cv) (CvFLAGS(cv) |= CVf_ASSERTION)
-#define CvASSERTION_off(cv) (CvFLAGS(cv) &= ~CVf_ASSERTION)
-
#define CvEVAL(cv) (CvUNIQUE(cv) && !SvFAKE(cv))
#define CvEVAL_on(cv) (CvUNIQUE_on(cv),SvFAKE_off(cv))
#define CvEVAL_off(cv) CvUNIQUE_off(cv)
-/* BEGIN|CHECK|INIT|END */
+/* BEGIN|CHECK|INIT|UNITCHECK|END */
#define CvSPECIAL(cv) (CvUNIQUE(cv) && SvFAKE(cv))
#define CvSPECIAL_on(cv) (CvUNIQUE_on(cv),SvFAKE_on(cv))
#define CvSPECIAL_off(cv) (CvUNIQUE_off(cv),SvFAKE_off(cv))
#define CvWEAKOUTSIDE_on(cv) (CvFLAGS(cv) |= CVf_WEAKOUTSIDE)
#define CvWEAKOUTSIDE_off(cv) (CvFLAGS(cv) &= ~CVf_WEAKOUTSIDE)
+#define CvISXSUB(cv) (CvFLAGS(cv) & CVf_ISXSUB)
+#define CvISXSUB_on(cv) (CvFLAGS(cv) |= CVf_ISXSUB)
+#define CvISXSUB_off(cv) (CvFLAGS(cv) &= ~CVf_ISXSUB)
+
+#define CvCVGV_RC(cv) (CvFLAGS(cv) & CVf_CVGV_RC)
+#define CvCVGV_RC_on(cv) (CvFLAGS(cv) |= CVf_CVGV_RC)
+#define CvCVGV_RC_off(cv) (CvFLAGS(cv) &= ~CVf_CVGV_RC)
+
+/* Flags for newXS_flags */
+#define XS_DYNAMIC_FILENAME 0x01 /* The filename isn't static */
/*
=head1 CV reference counts and CvOUTSIDE
circumstances we should decrement the refcount of the parent when freeing
the child.
-There is a further complication with non-closure anonymous subs (ie those
+There is a further complication with non-closure anonymous subs (i.e. those
that do not refer to any lexicals outside that sub). In this case, the
anonymous prototype is shared rather than being cloned. This has the
consequence that the parent may be freed while there are still active
https://perl5.git.perl.org / perl5.git / blobdiff