/* offsets within a pad */
-#if PTRSIZE == 4
-typedef U32TYPE PADOFFSET;
-#else
-# if PTRSIZE == 8
-typedef U64TYPE PADOFFSET;
-# endif
-#endif
+typedef SSize_t PADOFFSET; /* signed so that -1 is a valid value */
#define NOT_IN_PAD ((PADOFFSET) -1)
+/* B.xs expects the first members of these two structs to line up
+ (xpadl_max with xpadnl_fill).
+ */
struct padlist {
SSize_t xpadl_max; /* max index for which array has space */
- PAD ** xpadl_alloc; /* pointer to beginning of array of AVs */
- PADNAMELIST*xpadl_outid; /* Padnamelist of outer pad; used as ID */
+ union {
+ PAD ** xpadlarr_alloc; /* Pointer to beginning of array of AVs.
+ index 0 is a padnamelist * */
+ struct {
+ PADNAMELIST * padnl;
+ PAD * pad_1; /* this slice of PAD * array always alloced */
+ PAD * pad_2; /* maybe unalloced */
+ } * xpadlarr_dbg; /* for use with a C debugger only */
+ } xpadl_arr;
+ U32 xpadl_id; /* Semi-unique ID, shared between clones */
+ U32 xpadl_outid; /* ID of outer pad */
+};
+
+struct padnamelist {
+ SSize_t xpadnl_fill; /* max index in use */
+ PADNAME ** xpadnl_alloc; /* pointer to beginning of array */
+ SSize_t xpadnl_max; /* max index for which array has space */
+ PADOFFSET xpadnl_max_named; /* highest index with len > 0 */
+ U32 xpadnl_refcnt;
+};
+
+/* PERL_PADNAME_MINIMAL uses less memory, but on some platforms
+ PERL_PADNAME_ALIGNED may be faster, so platform-specific hints can
+ define one or the other. */
+#if defined(PERL_PADNAME_MINIMAL) && defined (PERL_PADNAME_ALIGNED)
+# error PERL_PADNAME_MINIMAL and PERL_PADNAME_ALIGNED are exclusive
+#endif
+
+#if !defined(PERL_PADNAME_MINIMAL) && !defined(PERL_PADNAME_ALIGNED)
+# define PERL_PADNAME_MINIMAL
+#endif
+
+#define _PADNAME_BASE \
+ char * xpadn_pv; \
+ HV * xpadn_ourstash; \
+ union { \
+ HV * xpadn_typestash; \
+ CV * xpadn_protocv; \
+ } xpadn_type_u; \
+ U32 xpadn_low; \
+ U32 xpadn_high; \
+ U32 xpadn_refcnt; \
+ int xpadn_gen; \
+ U8 xpadn_len; \
+ U8 xpadn_flags
+
+struct padname {
+ _PADNAME_BASE;
+};
+
+struct padname_with_str {
+#ifdef PERL_PADNAME_MINIMAL
+ _PADNAME_BASE;
+#else
+ struct padname xpadn_padname;
+#endif
+ char xpadn_str[1];
};
+#undef _PADNAME_BASE
+
+#define PADNAME_FROM_PV(s) \
+ ((PADNAME *)((s) - STRUCT_OFFSET(struct padname_with_str, xpadn_str)))
+
/* a value that PL_cop_seqmax is guaranteed never to be,
* flagging that a lexical is being introduced, or has not yet left scope
*/
#define PERL_PADSEQ_INTRO U32_MAX
+#define COP_SEQMAX_INC \
+ (PL_cop_seqmax++, \
+ (void)(PL_cop_seqmax == PERL_PADSEQ_INTRO && PL_cop_seqmax++))
/* B.xs needs these for the benefit of B::Deparse */
/* Low range end is exclusive (valid from the cop seq after this one) */
/* High range end is inclusive (valid up to this cop seq) */
-#if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
-# define COP_SEQ_RANGE_LOW(sv) \
- (({ const SV *const _sv_cop_seq_range_low = (const SV *) (sv); \
- assert(SvTYPE(_sv_cop_seq_range_low) == SVt_NV \
- || SvTYPE(_sv_cop_seq_range_low) >= SVt_PVNV); \
- assert(SvTYPE(_sv_cop_seq_range_low) != SVt_PVAV); \
- assert(SvTYPE(_sv_cop_seq_range_low) != SVt_PVHV); \
- assert(SvTYPE(_sv_cop_seq_range_low) != SVt_PVCV); \
- assert(SvTYPE(_sv_cop_seq_range_low) != SVt_PVFM); \
- assert(!isGV_with_GP(_sv_cop_seq_range_low)); \
- ((XPVNV*) MUTABLE_PTR(SvANY(_sv_cop_seq_range_low)))->xnv_u.xpad_cop_seq.xlow; \
- }))
-# define COP_SEQ_RANGE_HIGH(sv) \
- (({ const SV *const _sv_cop_seq_range_high = (const SV *) (sv); \
- assert(SvTYPE(_sv_cop_seq_range_high) == SVt_NV \
- || SvTYPE(_sv_cop_seq_range_high) >= SVt_PVNV); \
- assert(SvTYPE(_sv_cop_seq_range_high) != SVt_PVAV); \
- assert(SvTYPE(_sv_cop_seq_range_high) != SVt_PVHV); \
- assert(SvTYPE(_sv_cop_seq_range_high) != SVt_PVCV); \
- assert(SvTYPE(_sv_cop_seq_range_high) != SVt_PVFM); \
- assert(!isGV_with_GP(_sv_cop_seq_range_high)); \
- ((XPVNV*) MUTABLE_PTR(SvANY(_sv_cop_seq_range_high)))->xnv_u.xpad_cop_seq.xhigh; \
- }))
-# define PARENT_PAD_INDEX(sv) \
- (({ const SV *const _sv_parent_pad_index = (const SV *) (sv); \
- assert(SvTYPE(_sv_parent_pad_index) == SVt_NV \
- || SvTYPE(_sv_parent_pad_index) >= SVt_PVNV); \
- assert(SvTYPE(_sv_parent_pad_index) != SVt_PVAV); \
- assert(SvTYPE(_sv_parent_pad_index) != SVt_PVHV); \
- assert(SvTYPE(_sv_parent_pad_index) != SVt_PVCV); \
- assert(SvTYPE(_sv_parent_pad_index) != SVt_PVFM); \
- assert(!isGV_with_GP(_sv_parent_pad_index)); \
- ((XPVNV*) MUTABLE_PTR(SvANY(_sv_parent_pad_index)))->xnv_u.xpad_cop_seq.xlow; \
- }))
-# define PARENT_FAKELEX_FLAGS(sv) \
- (({ const SV *const _sv_parent_fakelex_flags = (const SV *) (sv); \
- assert(SvTYPE(_sv_parent_fakelex_flags) == SVt_NV \
- || SvTYPE(_sv_parent_fakelex_flags) >= SVt_PVNV); \
- assert(SvTYPE(_sv_parent_fakelex_flags) != SVt_PVAV); \
- assert(SvTYPE(_sv_parent_fakelex_flags) != SVt_PVHV); \
- assert(SvTYPE(_sv_parent_fakelex_flags) != SVt_PVCV); \
- assert(SvTYPE(_sv_parent_fakelex_flags) != SVt_PVFM); \
- assert(!isGV_with_GP(_sv_parent_fakelex_flags)); \
- ((XPVNV*) MUTABLE_PTR(SvANY(_sv_parent_fakelex_flags)))->xnv_u.xpad_cop_seq.xhigh; \
- }))
-#else
-# define COP_SEQ_RANGE_LOW(sv) \
- (0 + (((XPVNV*) SvANY(sv))->xnv_u.xpad_cop_seq.xlow))
-# define COP_SEQ_RANGE_HIGH(sv) \
- (0 + (((XPVNV*) SvANY(sv))->xnv_u.xpad_cop_seq.xhigh))
-
-
-# define PARENT_PAD_INDEX(sv) \
- (0 + (((XPVNV*) SvANY(sv))->xnv_u.xpad_cop_seq.xlow))
-# define PARENT_FAKELEX_FLAGS(sv) \
- (0 + (((XPVNV*) SvANY(sv))->xnv_u.xpad_cop_seq.xhigh))
-#endif
+#define COP_SEQ_RANGE_LOW(pn) (pn)->xpadn_low
+#define COP_SEQ_RANGE_HIGH(pn) (pn)->xpadn_high
+#define PARENT_PAD_INDEX(pn) (pn)->xpadn_low
+#define PARENT_FAKELEX_FLAGS(pn) (pn)->xpadn_high
/* Flags set in the SvIVX field of FAKE namesvs */
#define padadd_NO_DUP_CHECK 0x04 /* skip warning on dups. */
#define padadd_STALEOK 0x08 /* allow stale lexical in active
* sub, but only one level up */
-#define padadd_UTF8_NAME SVf_UTF8 /* name is UTF-8 encoded. */
/* ASSERT_CURPAD_LEGAL and ASSERT_CURPAD_ACTIVE respectively determine
* whether PL_comppad and PL_curpad are consistent and whether they have
XXX DAPM it would make more sense to make the arg a PADOFFSET
=for apidoc m|void|SAVECLEARSV |SV **svp
Clear the pointed to pad value on scope exit. (i.e. the runtime action of
-'my')
+C<my>)
=for apidoc m|void|SAVECOMPPAD
-save PL_comppad and PL_curpad
+save C<PL_comppad> and C<PL_curpad>
=for apidoc Amx|PAD **|PadlistARRAY|PADLIST padlist
=for apidoc Amx|SSize_t|PadlistMAX|PADLIST padlist
The index of the last allocated space in the padlist. Note that the last
-pad may be in an earlier slot. Any entries following it will be NULL in
+pad may be in an earlier slot. Any entries following it will be C<NULL> in
that case.
=for apidoc Amx|PADNAMELIST *|PadlistNAMES|PADLIST padlist
=for apidoc Amx|SSize_t|PadnamelistMAX|PADNAMELIST pnl
The index of the last pad name.
+=for apidoc Amx|SSize_t|PadnamelistREFCNT|PADNAMELIST pnl
+The reference count of the pad name list.
+
+=for apidoc Amx|void|PadnamelistREFCNT_dec|PADNAMELIST pnl
+Lowers the reference count of the pad name list.
+
=for apidoc Amx|SV **|PadARRAY|PAD pad
The C array of pad entries.
The index of the last pad entry.
=for apidoc Amx|char *|PadnamePV|PADNAME pn
-The name stored in the pad name struct. This returns NULL for a target or
-GV slot.
+The name stored in the pad name struct. This returns C<NULL> for a target
+slot.
=for apidoc Amx|STRLEN|PadnameLEN|PADNAME pn
The length of the name.
=for apidoc Amx|bool|PadnameUTF8|PADNAME pn
-Whether PadnamePV is in UTF8.
+Whether PadnamePV is in UTF-8. Currently, this is always true.
=for apidoc Amx|SV *|PadnameSV|PADNAME pn
-Returns the pad name as an SV. This is currently just C<pn>. It will
-begin returning a new mortal SV if pad names ever stop being SVs.
+Returns the pad name as a mortal SV.
=for apidoc m|bool|PadnameIsOUR|PADNAME pn
Whether this is an "our" variable.
The stash in which this "our" variable was declared.
=for apidoc m|bool|PadnameOUTER|PADNAME pn
-Whether this entry belongs to an outer pad.
+Whether this entry belongs to an outer pad. Entries for which this is true
+are often referred to as 'fake'.
=for apidoc m|bool|PadnameIsSTATE|PADNAME pn
Whether this is a "state" variable.
=for apidoc m|HV *|PadnameTYPE|PADNAME pn
-The stash associated with a typed lexical. This returns the %Foo:: hash
+The stash associated with a typed lexical. This returns the C<%Foo::> hash
for C<my Foo $bar>.
+=for apidoc Amx|SSize_t|PadnameREFCNT|PADNAME pn
+The reference count of the pad name.
+
+=for apidoc Amx|void|PadnameREFCNT_dec|PADNAME pn
+Lowers the reference count of the pad name.
+
=for apidoc m|SV *|PAD_SETSV |PADOFFSET po|SV* sv
Set the slot at offset C<po> in the current pad to C<sv>
Save the current pad then set it to null.
=for apidoc m|void|PAD_SAVE_LOCAL|PAD *opad|PAD *npad
-Save the current pad to the local variable opad, then make the
-current pad equal to npad
+Save the current pad to the local variable C<opad>, then make the
+current pad equal to C<npad>
=for apidoc m|void|PAD_RESTORE_LOCAL|PAD *opad
-Restore the old pad saved into the local variable opad by PAD_SAVE_LOCAL()
+Restore the old pad saved into the local variable C<opad> by C<PAD_SAVE_LOCAL()>
=cut
*/
-#define PadlistARRAY(pl) (pl)->xpadl_alloc
+#define PadlistARRAY(pl) (pl)->xpadl_arr.xpadlarr_alloc
#define PadlistMAX(pl) (pl)->xpadl_max
-#define PadlistNAMES(pl) (*PadlistARRAY(pl))
+#define PadlistNAMES(pl) *((PADNAMELIST **)PadlistARRAY(pl))
#define PadlistNAMESARRAY(pl) PadnamelistARRAY(PadlistNAMES(pl))
#define PadlistNAMESMAX(pl) PadnamelistMAX(PadlistNAMES(pl))
#define PadlistREFCNT(pl) 1 /* reserved for future use */
-#define PadnamelistARRAY(pnl) AvARRAY(pnl)
-#define PadnamelistMAX(pnl) AvFILLp(pnl)
-#define PadnamelistMAXNAMED(pnl) \
- ((XPVAV*) SvANY(pnl))->xmg_u.xmg_hash_index
+#define PadnamelistARRAY(pnl) (pnl)->xpadnl_alloc
+#define PadnamelistMAX(pnl) (pnl)->xpadnl_fill
+#define PadnamelistMAXNAMED(pnl) (pnl)->xpadnl_max_named
+#define PadnamelistREFCNT(pnl) (pnl)->xpadnl_refcnt
+#define PadnamelistREFCNT_dec(pnl) Perl_padnamelist_free(aTHX_ pnl)
#define PadARRAY(pad) AvARRAY(pad)
#define PadMAX(pad) AvFILLp(pad)
-#define PadnamePV(pn) (SvPOKp(pn) ? SvPVX(pn) : NULL)
-#define PadnameLEN(pn) ((pn) == &PL_sv_undef ? 0 : SvCUR(pn))
-#define PadnameUTF8(pn) !!SvUTF8(pn)
-#define PadnameSV(pn) pn
-#define PadnameIsOUR(pn) !!SvPAD_OUR(pn)
-#define PadnameOURSTASH(pn) SvOURSTASH(pn)
-#define PadnameOUTER(pn) !!SvFAKE(pn)
-#define PadnameIsSTATE(pn) !!SvPAD_STATE(pn)
-#define PadnameTYPE(pn) (SvPAD_TYPED(pn) ? SvSTASH(pn) : NULL)
-
+#define PadnamePV(pn) (pn)->xpadn_pv
+#define PadnameLEN(pn) (pn)->xpadn_len
+#define PadnameUTF8(pn) 1
+#define PadnameSV(pn) \
+ newSVpvn_flags(PadnamePV(pn), PadnameLEN(pn), SVs_TEMP|SVf_UTF8)
+#define PadnameFLAGS(pn) (pn)->xpadn_flags
+#define PadnameIsOUR(pn) (!!(pn)->xpadn_ourstash)
+#define PadnameOURSTASH(pn) (pn)->xpadn_ourstash
+#define PadnameTYPE(pn) (pn)->xpadn_type_u.xpadn_typestash
+#define PadnamePROTOCV(pn) (pn)->xpadn_type_u.xpadn_protocv
+#define PadnameREFCNT(pn) (pn)->xpadn_refcnt
+#define PadnameREFCNT_dec(pn) Perl_padname_free(aTHX_ pn)
+#define PadnameOURSTASH_set(pn,s) (PadnameOURSTASH(pn) = (s))
+#define PadnameTYPE_set(pn,s) (PadnameTYPE(pn) = (s))
+#define PadnameOUTER(pn) (PadnameFLAGS(pn) & PADNAMEt_OUTER)
+#define PadnameIsSTATE(pn) (PadnameFLAGS(pn) & PADNAMEt_STATE)
+#define PadnameLVALUE(pn) (PadnameFLAGS(pn) & PADNAMEt_LVALUE)
+
+#define PadnameLVALUE_on(pn) (PadnameFLAGS(pn) |= PADNAMEt_LVALUE)
+#define PadnameIsSTATE_on(pn) (PadnameFLAGS(pn) |= PADNAMEt_STATE)
+
+#define PADNAMEt_OUTER 1 /* outer lexical var */
+#define PADNAMEt_STATE 2 /* state var */
+#define PADNAMEt_LVALUE 4 /* used as lvalue */
+#define PADNAMEt_TYPED 8 /* for B; unused by core */
+#define PADNAMEt_OUR 16 /* for B; unused by core */
+
+/* backward compatibility */
+#define SvPAD_STATE PadnameIsSTATE
+#define SvPAD_TYPED(pn) (!!PadnameTYPE(pn))
+#define SvPAD_OUR(pn) (!!PadnameOURSTASH(pn))
+#define SvPAD_STATE_on PadnameIsSTATE_on
+#define SvPAD_TYPED_on(pn) (PadnameFLAGS(pn) |= PADNAMEt_TYPED)
+#define SvPAD_OUR_on(pn) (PadnameFLAGS(pn) |= PADNAMEt_OUR)
+#define SvOURSTASH PadnameOURSTASH
+#define SvOURSTASH_set PadnameOURSTASH_set
+#define SVpad_STATE PADNAMEt_STATE
+#define SVpad_TYPED PADNAMEt_TYPED
+#define SVpad_OUR PADNAMEt_OUR
#ifdef DEBUGGING
# define PAD_SV(po) pad_sv(po)
Save the current pad in the given context block structure.
=for apidoc m|SV *|CX_CURPAD_SV|struct context|PADOFFSET po
-Access the SV at offset po in the saved current pad in the given
+Access the SV at offset C<po> in the saved current pad in the given
context block structure (can be used as an lvalue).
=cut
=for apidoc m|STRLEN|PAD_COMPNAME_GEN|PADOFFSET po
The generation number of the name at offset C<po> in the current
-compiling pad (lvalue). Note that C<SvUVX> is hijacked for this purpose.
+compiling pad (lvalue).
=for apidoc m|STRLEN|PAD_COMPNAME_GEN_set|PADOFFSET po|int gen
Sets the generation number of the name at offset C<po> in the current
-ling pad (lvalue) to C<gen>. Note that C<SvUV_set> is hijacked for this purpose.
-
+ling pad (lvalue) to C<gen>.
=cut
*/
#define PAD_COMPNAME(po) PAD_COMPNAME_SV(po)
-#define PAD_COMPNAME_SV(po) (AvARRAY(PL_comppad_name)[(po)])
-#define PAD_COMPNAME_FLAGS(po) SvFLAGS(PAD_COMPNAME_SV(po))
+#define PAD_COMPNAME_SV(po) (PadnamelistARRAY(PL_comppad_name)[(po)])
+#define PAD_COMPNAME_FLAGS(po) PadnameFLAGS(PAD_COMPNAME(po))
#define PAD_COMPNAME_FLAGS_isOUR(po) SvPAD_OUR(PAD_COMPNAME_SV(po))
-#define PAD_COMPNAME_PV(po) SvPV_nolen(PAD_COMPNAME_SV(po))
+#define PAD_COMPNAME_PV(po) PadnamePV(PAD_COMPNAME(po))
-#define PAD_COMPNAME_TYPE(po) pad_compname_type(po)
+#define PAD_COMPNAME_TYPE(po) PadnameTYPE(PAD_COMPNAME(po))
#define PAD_COMPNAME_OURSTASH(po) \
(SvOURSTASH(PAD_COMPNAME_SV(po)))
-#define PAD_COMPNAME_GEN(po) ((STRLEN)SvUVX(AvARRAY(PL_comppad_name)[po]))
+#define PAD_COMPNAME_GEN(po) \
+ ((STRLEN)PadnamelistARRAY(PL_comppad_name)[po]->xpadn_gen)
-#define PAD_COMPNAME_GEN_set(po, gen) SvUV_set(AvARRAY(PL_comppad_name)[po], (UV)(gen))
+#define PAD_COMPNAME_GEN_set(po, gen) \
+ (PadnamelistARRAY(PL_comppad_name)[po]->xpadn_gen = (gen))
/*
#define PAD_CLONE_VARS(proto_perl, param) \
PL_comppad = av_dup(proto_perl->Icomppad, param); \
PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : NULL; \
- PL_comppad_name = av_dup(proto_perl->Icomppad_name, param); \
+ PL_comppad_name = \
+ padnamelist_dup(proto_perl->Icomppad_name, param); \
PL_comppad_name_fill = proto_perl->Icomppad_name_fill; \
PL_comppad_name_floor = proto_perl->Icomppad_name_floor; \
PL_min_intro_pending = proto_perl->Imin_intro_pending; \
PL_cop_seqmax = proto_perl->Icop_seqmax;
/*
-=for apidoc Am|PADOFFSET|pad_add_name_pvs|const char *name|U32 flags|HV *typestash|HV *ourstash
+=for apidoc Am|PADOFFSET|pad_add_name_pvs|"literal string" name|U32 flags|HV *typestash|HV *ourstash
-Exactly like L</pad_add_name_pvn>, but takes a literal string instead
-of a string/length pair.
+Exactly like L</pad_add_name_pvn>, but takes a literal string
+instead of a string/length pair.
=cut
*/
Perl_pad_add_name_pvn(aTHX_ STR_WITH_LEN(name), flags, typestash, ourstash)
/*
-=for apidoc Am|PADOFFSET|pad_findmy_pvs|const char *name|U32 flags
+=for apidoc Am|PADOFFSET|pad_findmy_pvs|"literal string" name|U32 flags
-Exactly like L</pad_findmy_pvn>, but takes a literal string instead
-of a string/length pair.
+Exactly like L</pad_findmy_pvn>, but takes a literal string
+instead of a string/length pair.
=cut
*/
Perl_pad_findmy_pvn(aTHX_ STR_WITH_LEN(name), flags)
/*
- * Local variables:
- * c-indentation-style: bsd
- * c-basic-offset: 4
- * indent-tabs-mode: nil
- * End:
- *
* ex: set ts=8 sts=4 sw=4 et:
*/
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