_SV_HEAD(void*);
_SV_HEAD_UNION;
#ifdef DEBUG_LEAKING_SCALARS
- unsigned sv_debug_optype:9; /* the type of OP that allocated us */
- unsigned sv_debug_inpad:1; /* was allocated in a pad for an OP */
- unsigned sv_debug_cloned:1; /* was cloned for an ithread */
- unsigned sv_debug_line:16; /* the line where we were allocated */
+ PERL_BITFIELD32 sv_debug_optype:9; /* the type of OP that allocated us */
+ PERL_BITFIELD32 sv_debug_inpad:1; /* was allocated in a pad for an OP */
+ PERL_BITFIELD32 sv_debug_cloned:1; /* was cloned for an ithread */
+ PERL_BITFIELD32 sv_debug_line:16; /* the line where we were allocated */
char * sv_debug_file; /* the file where we were allocated */
#endif
};
_SV_HEAD_UNION;
};
+struct p5rx {
+ _SV_HEAD(struct regexp*); /* pointer to regexp body */
+ _SV_HEAD_UNION;
+};
+
#undef _SV_HEAD
#undef _SV_HEAD_UNION /* ensure no pollution */
#define SvFLAGS(sv) (sv)->sv_flags
#define SvREFCNT(sv) (sv)->sv_refcnt
-#if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(PERL_GCC_PEDANTIC)
+#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
# define SvREFCNT_inc(sv) \
({ \
SV * const _sv = (SV*)(sv); \
#define SvREFCNT_inc_void_NN(sv) (void)(++SvREFCNT((SV*)(sv)))
#define SvREFCNT_inc_simple_void_NN(sv) (void)(++SvREFCNT((SV*)(sv)))
-#if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(PERL_GCC_PEDANTIC)
+#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
# define SvREFCNT_dec(sv) \
({ \
SV * const _sv = (SV*)(sv); \
3: For PVCV, whether CvUNIQUE(cv)
refers to an eval or once only
[CvEVAL(cv), CvSPECIAL(cv)]
- 4: Whether the regexp pointer is in
- fact an offset [SvREPADTMP(sv)]
- 5: On a pad name SV, that slot in the
+ 4: On a pad name SV, that slot in the
frame AV is a REFCNT'ed reference
to a lexical from "outside". */
-#define SVphv_REHASH SVf_FAKE /* 6: On a PVHV, hash values are being
+#define SVphv_REHASH SVf_FAKE /* 5: On a PVHV, hash values are being
recalculated */
#define SVf_OOK 0x02000000 /* has valid offset value. For a PVHV this
means that a hv_aux struct is present
after the main array */
#define SVf_BREAK 0x04000000 /* refcnt is artificially low - used by
- SV's in final arena cleanup */
+ SVs in final arena cleanup.
+ Set in S_regtry on PL_reg_curpm, so that
+ perl_destruct will skip it. */
#define SVf_READONLY 0x08000000 /* may not be modified */
void * xivu_p1;
I32 xivu_i32;
HEK * xivu_namehek; /* xpvlv, xpvgv: GvNAME */
+ HV * xivu_hv; /* regexp: paren_names */
};
union _xmgu {
_XPVMG_HEAD;
};
-struct xregexp {
- _XPV_HEAD;
- _XPVMG_HEAD;
- REGEXP * xrx_regexp; /* Our regular expression */
-};
-
struct xpvlv {
_XPV_HEAD;
_XPVMG_HEAD;
IV xfm_lines;
} xpvfm_allocated;
+#define _XPVIO_TAIL \
+ PerlIO * xio_ifp; /* ifp and ofp are normally the same */ \
+ PerlIO * xio_ofp; /* but sockets need separate streams */ \
+ /* Cray addresses everything by word boundaries (64 bits) and \
+ * code and data pointers cannot be mixed (which is exactly what \
+ * Perl_filter_add() tries to do with the dirp), hence the \
+ * following union trick (as suggested by Gurusamy Sarathy). \
+ * For further information see Geir Johansen's problem report \
+ * titled [ID 20000612.002] Perl problem on Cray system \
+ * The any pointer (known as IoANY()) will also be a good place \
+ * to hang any IO disciplines to. \
+ */ \
+ union { \
+ DIR * xiou_dirp; /* for opendir, readdir, etc */ \
+ void * xiou_any; /* for alignment */ \
+ } xio_dirpu; \
+ IV xio_lines; /* $. */ \
+ IV xio_page; /* $% */ \
+ IV xio_page_len; /* $= */ \
+ IV xio_lines_left; /* $- */ \
+ char * xio_top_name; /* $^ */ \
+ GV * xio_top_gv; /* $^ */ \
+ char * xio_fmt_name; /* $~ */ \
+ GV * xio_fmt_gv; /* $~ */ \
+ char * xio_bottom_name;/* $^B */ \
+ GV * xio_bottom_gv; /* $^B */ \
+ char xio_type; \
+ U8 xio_flags
+
+
struct xpvio {
_XPV_HEAD;
_XPVMG_HEAD;
-
- PerlIO * xio_ifp; /* ifp and ofp are normally the same */
- PerlIO * xio_ofp; /* but sockets need separate streams */
- /* Cray addresses everything by word boundaries (64 bits) and
- * code and data pointers cannot be mixed (which is exactly what
- * Perl_filter_add() tries to do with the dirp), hence the following
- * union trick (as suggested by Gurusamy Sarathy).
- * For further information see Geir Johansen's problem report titled
- [ID 20000612.002] Perl problem on Cray system
- * The any pointer (known as IoANY()) will also be a good place
- * to hang any IO disciplines to.
- */
- union {
- DIR * xiou_dirp; /* for opendir, readdir, etc */
- void * xiou_any; /* for alignment */
- } xio_dirpu;
- IV xio_lines; /* $. */
- IV xio_page; /* $% */
- IV xio_page_len; /* $= */
- IV xio_lines_left; /* $- */
- char * xio_top_name; /* $^ */
- GV * xio_top_gv; /* $^ */
- char * xio_fmt_name; /* $~ */
- GV * xio_fmt_gv; /* $~ */
- char * xio_bottom_name;/* $^B */
- GV * xio_bottom_gv; /* $^B */
- char xio_type;
- U8 xio_flags;
+ _XPVIO_TAIL;
};
+
+typedef struct {
+ _XPV_ALLOCATED_HEAD;
+ _XPVMG_HEAD;
+ _XPVIO_TAIL;
+} xpvio_allocated;
+
#define xio_dirp xio_dirpu.xiou_dirp
#define xio_any xio_dirpu.xiou_any
Returns a boolean indicating whether the SV contains a v-string.
=for apidoc Am|U32|SvOOK|SV* sv
-Returns a U32 indicating whether the SvIVX is a valid offset value for
-the SvPVX. This hack is used internally to speed up removal of characters
-from the beginning of a SvPV. When SvOOK is true, then the start of the
-allocated string buffer is really (SvPVX - SvIVX).
+Returns a U32 indicating whether the pointer to the string buffer is offset.
+This hack is used internally to speed up removal of characters from the
+beginning of a SvPV. When SvOOK is true, then the start of the
+allocated string buffer is actually C<SvOOK_offset()> bytes before SvPVX.
+This offset used to be stored in SvIVX, but is now stored within the spare
+part of the buffer.
=for apidoc Am|U32|SvROK|SV* sv
Tests if the SV is an RV.
#define SvOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK))
#define SvIOKp(sv) (SvFLAGS(sv) & SVp_IOK)
-#define SvIOKp_on(sv) (assert_not_glob(sv) SvRELEASE_IVX(sv), \
+#define SvIOKp_on(sv) (assert_not_glob(sv) SvRELEASE_IVX_(sv) \
SvFLAGS(sv) |= SVp_IOK)
#define SvNOKp(sv) (SvFLAGS(sv) & SVp_NOK)
#define SvNOKp_on(sv) (assert_not_glob(sv) SvFLAGS(sv) |= SVp_NOK)
SvFLAGS(sv) |= SVp_POK)
#define SvIOK(sv) (SvFLAGS(sv) & SVf_IOK)
-#define SvIOK_on(sv) (assert_not_glob(sv) SvRELEASE_IVX(sv), \
+#define SvIOK_on(sv) (assert_not_glob(sv) SvRELEASE_IVX_(sv) \
SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
#define SvIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK|SVf_IVisUV))
#define SvIOK_only(sv) (SvOK_off(sv), \
#define SvTAIL_off(sv) (SvFLAGS(sv) &= ~SVpbm_TAIL)
-#ifdef USE_ITHREADS
-/* The following uses the FAKE flag to show that a regex pointer is infact
- its own offset in the regexpad for ithreads */
-#define SvREPADTMP(sv) (SvFLAGS(sv) & SVf_FAKE)
-#define SvREPADTMP_on(sv) (SvFLAGS(sv) |= SVf_FAKE)
-#define SvREPADTMP_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE)
-#endif
-
#define SvPAD_TYPED(sv) \
((SvFLAGS(sv) & (SVpad_NAME|SVpad_TYPED)) == (SVpad_NAME|SVpad_TYPED))
assert(SvTYPE(_svi) != SVt_PVHV); \
assert(SvTYPE(_svi) != SVt_PVCV); \
assert(SvTYPE(_svi) != SVt_PVFM); \
+ assert(SvTYPE(_svi) != SVt_PVIO); \
assert(!isGV_with_GP(_svi)); \
&(((XPVNV*) SvANY(_svi))->xnv_u.xnv_nv); \
}))
STMT_START { assert(SvTYPE(sv) == SVt_NV || SvTYPE(sv) >= SVt_PVNV); \
assert(SvTYPE(sv) != SVt_PVAV); assert(SvTYPE(sv) != SVt_PVHV); \
assert(SvTYPE(sv) != SVt_PVCV); assert(SvTYPE(sv) != SVt_PVFM); \
+ assert(SvTYPE(sv) != SVt_PVIO); \
assert(!isGV_with_GP(sv)); \
(((XPVNV*)SvANY(sv))->xnv_u.xnv_nv = (val)); } STMT_END
#define SvPV_set(sv, val) \
if (SvLEN(sv)) { \
assert(!SvROK(sv)); \
if(SvOOK(sv)) { \
- SvPV_set(sv, SvPVX_mutable(sv) - SvIVX(sv)); \
+ STRLEN zok; \
+ SvOOK_offset(sv, zok); \
+ SvPV_set(sv, SvPVX_mutable(sv) - zok); \
SvFLAGS(sv) &= ~SVf_OOK; \
} \
Safefree(SvPVX(sv)); \
#define SV_COW_SHARED_HASH_KEYS 512
/* This one is only enabled for PERL_OLD_COPY_ON_WRITE */
#define SV_COW_OTHER_PVS 1024
+/* Make sv_2pv_flags return NULL if something is undefined. */
+#define SV_UNDEF_RETURNS_NULL 2048
/* The core is safe for this COW optimisation. XS code on CPAN may not be.
So only default to doing the COW setup if we're in the core.
#ifdef PERL_OLD_COPY_ON_WRITE
#define SvRELEASE_IVX(sv) \
- ((SvIsCOW(sv) ? sv_force_normal_flags(sv, 0) : (void) 0), SvOOK_off(sv))
+ ((SvIsCOW(sv) ? sv_force_normal_flags(sv, 0) : (void) 0), 0)
# define SvIsCOW_normal(sv) (SvIsCOW(sv) && SvLEN(sv))
+# define SvRELEASE_IVX_(sv) SvRELEASE_IVX(sv),
#else
-# define SvRELEASE_IVX(sv) SvOOK_off(sv)
+# define SvRELEASE_IVX(sv) 0
+/* This little game brought to you by the need to shut this warning up:
+mg.c: In function `Perl_magic_get':
+mg.c:1024: warning: left-hand operand of comma expression has no effect
+*/
+# define SvRELEASE_IVX_(sv) /**/
#endif /* PERL_OLD_COPY_ON_WRITE */
#define CAN_COW_MASK (SVs_OBJECT|SVs_GMG|SVs_SMG|SVs_RMG|SVf_IOK|SVf_NOK| \
#define sv_catpvn_utf8_upgrade(dsv, sstr, slen, nsv) \
STMT_START { \
if (!(nsv)) \
- nsv = sv_2mortal(newSVpvn(sstr, slen)); \
+ nsv = newSVpvn_flags(sstr, slen, SVs_TEMP); \
else \
sv_setpvn(nsv, sstr, slen); \
SvUTF8_off(nsv); \
};
/*
+=for apidoc Am|SV*|newSVpvn_utf8|NULLOK const char* s|STRLEN len|U32 utf8
+
+Creates a new SV and copies a string into it. If utf8 is true, calls
+C<SvUTF8_on> on the new SV. Implemented as a wrapper around C<newSVpvn_flags>.
+
+=cut
+*/
+
+#define newSVpvn_utf8(s, len, u) newSVpvn_flags((s), (len), (u) ? SVf_UTF8 : 0)
+
+/*
+=for apidoc Am|void|SvOOK_offset|NN SV*sv|STRLEN len
+
+Reads into I<len> the offset from SvPVX back to the true start of the
+allocated buffer, which will be non-zero if C<sv_chop> has been used to
+efficiently remove characters from start of the buffer. Implemented as a
+macro, which takes the address of I<len>, which must be of type C<STRLEN>.
+Evaluates I<sv> more than once. Sets I<len> to 0 if C<SvOOK(sv)> is false.
+
+=cut
+*/
+
+#ifdef DEBUGGING
+/* Does the bot know something I don't?
+10:28 <@Nicholas> metabatman
+10:28 <+meta> Nicholas: crash
+*/
+# define SvOOK_offset(sv, offset) STMT_START { \
+ assert(sizeof(offset) == sizeof(STRLEN)); \
+ if (SvOOK(sv)) { \
+ const U8 *crash = (U8*)SvPVX_const(sv); \
+ offset = *--crash; \
+ if (!offset) { \
+ crash -= sizeof(STRLEN); \
+ Copy(crash, (U8 *)&offset, sizeof(STRLEN), U8); \
+ } \
+ { \
+ /* Validate the preceding buffer's sentinels to \
+ verify that no-one is using it. */ \
+ const U8 *const bonk = (U8 *) SvPVX_const(sv) - offset; \
+ while (crash > bonk) { \
+ --crash; \
+ assert (*crash == (U8)PTR2UV(crash)); \
+ } \
+ } \
+ } else { \
+ offset = 0; \
+ } \
+ } STMT_END
+#else
+ /* This is the same code, but avoids using any temporary variables: */
+# define SvOOK_offset(sv, offset) STMT_START { \
+ assert(sizeof(offset) == sizeof(STRLEN)); \
+ if (SvOOK(sv)) { \
+ offset = ((U8*)SvPVX_const(sv))[-1]; \
+ if (!offset) { \
+ Copy(SvPVX_const(sv) - 1 - sizeof(STRLEN), \
+ (U8 *)&offset, sizeof(STRLEN), U8); \
+ } \
+ } else { \
+ offset = 0; \
+ } \
+ } STMT_END
+#endif
+/*
* Local variables:
* c-indentation-style: bsd
* c-basic-offset: 4
https://perl5.git.perl.org / perl5.git / blobdiff