sortsv(AvARRAY(av), av_len(av)+1, Perl_sv_cmp_locale);
-See lib/sort.pm for details about controlling the sorting algorithm.
+Currently this always uses mergesort. See sortsv_flags for a more
+flexible routine.
void sortsv(SV** array, size_t num_elts, SVCOMPARE_t cmp)
=for hackers
Found in file pp_sort.c
+=item sortsv_flags
+X<sortsv_flags>
+
+Sort an array, with various options.
+
+ void sortsv_flags(SV** array, size_t num_elts, SVCOMPARE_t cmp, U32 flags)
+
+=for hackers
+Found in file pp_sort.c
+
=back
=back
-=head1 Functions in file pp_pack.c
+=head1 Functions in file mathoms.c
=over 8
-=item packlist
-X<packlist>
+=item gv_fetchmethod
+X<gv_fetchmethod>
-The engine implementing pack() Perl function.
+See L<gv_fetchmethod_autoload>.
- void packlist(SV *cat, const char *pat, const char *patend, SV **beglist, SV **endlist)
+ GV* gv_fetchmethod(HV* stash, const char* name)
=for hackers
-Found in file pp_pack.c
+Found in file mathoms.c
=item pack_cat
X<pack_cat>
void pack_cat(SV *cat, const char *pat, const char *patend, SV **beglist, SV **endlist, SV ***next_in_list, U32 flags)
=for hackers
-Found in file pp_pack.c
+Found in file mathoms.c
-=item unpackstring
-X<unpackstring>
+=item sv_2pvbyte_nolen
+X<sv_2pvbyte_nolen>
-The engine implementing unpack() Perl function. C<unpackstring> puts the
-extracted list items on the stack and returns the number of elements.
-Issue C<PUTBACK> before and C<SPAGAIN> after the call to this function.
+Return a pointer to the byte-encoded representation of the SV.
+May cause the SV to be downgraded from UTF-8 as a side-effect.
- I32 unpackstring(const char *pat, const char *patend, const char *s, const char *strend, U32 flags)
+Usually accessed via the C<SvPVbyte_nolen> macro.
+
+ char* sv_2pvbyte_nolen(SV* sv)
=for hackers
-Found in file pp_pack.c
+Found in file mathoms.c
+
+=item sv_2pvutf8_nolen
+X<sv_2pvutf8_nolen>
+
+Return a pointer to the UTF-8-encoded representation of the SV.
+May cause the SV to be upgraded to UTF-8 as a side-effect.
+
+Usually accessed via the C<SvPVutf8_nolen> macro.
+
+ char* sv_2pvutf8_nolen(SV* sv)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_2pv_nolen
+X<sv_2pv_nolen>
+
+Like C<sv_2pv()>, but doesn't return the length too. You should usually
+use the macro wrapper C<SvPV_nolen(sv)> instead.
+ char* sv_2pv_nolen(SV* sv)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_catpvn_mg
+X<sv_catpvn_mg>
+
+Like C<sv_catpvn>, but also handles 'set' magic.
+
+ void sv_catpvn_mg(SV *sv, const char *ptr, STRLEN len)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_catsv_mg
+X<sv_catsv_mg>
+
+Like C<sv_catsv>, but also handles 'set' magic.
+
+ void sv_catsv_mg(SV *dstr, SV *sstr)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_force_normal
+X<sv_force_normal>
+
+Undo various types of fakery on an SV: if the PV is a shared string, make
+a private copy; if we're a ref, stop refing; if we're a glob, downgrade to
+an xpvmg. See also C<sv_force_normal_flags>.
+
+ void sv_force_normal(SV *sv)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_iv
+X<sv_iv>
+
+A private implementation of the C<SvIVx> macro for compilers which can't
+cope with complex macro expressions. Always use the macro instead.
+
+ IV sv_iv(SV* sv)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_nolocking
+X<sv_nolocking>
+
+Dummy routine which "locks" an SV when there is no locking module present.
+Exists to avoid test for a NULL function pointer and because it could
+potentially warn under some level of strict-ness.
+
+"Superseded" by sv_nosharing().
+
+ void sv_nolocking(SV *sv)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_nounlocking
+X<sv_nounlocking>
+
+Dummy routine which "unlocks" an SV when there is no locking module present.
+Exists to avoid test for a NULL function pointer and because it could
+potentially warn under some level of strict-ness.
+
+"Superseded" by sv_nosharing().
+
+ void sv_nounlocking(SV *sv)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_nv
+X<sv_nv>
+
+A private implementation of the C<SvNVx> macro for compilers which can't
+cope with complex macro expressions. Always use the macro instead.
+
+ NV sv_nv(SV* sv)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_pv
+X<sv_pv>
+
+Use the C<SvPV_nolen> macro instead
+
+ char* sv_pv(SV *sv)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_pvbyte
+X<sv_pvbyte>
+
+Use C<SvPVbyte_nolen> instead.
+
+ char* sv_pvbyte(SV *sv)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_pvbyten
+X<sv_pvbyten>
+
+A private implementation of the C<SvPVbyte> macro for compilers
+which can't cope with complex macro expressions. Always use the macro
+instead.
+
+ char* sv_pvbyten(SV *sv, STRLEN *len)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_pvn
+X<sv_pvn>
+
+A private implementation of the C<SvPV> macro for compilers which can't
+cope with complex macro expressions. Always use the macro instead.
+
+ char* sv_pvn(SV *sv, STRLEN *len)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_pvutf8
+X<sv_pvutf8>
+
+Use the C<SvPVutf8_nolen> macro instead
+
+ char* sv_pvutf8(SV *sv)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_pvutf8n
+X<sv_pvutf8n>
+
+A private implementation of the C<SvPVutf8> macro for compilers
+which can't cope with complex macro expressions. Always use the macro
+instead.
+
+ char* sv_pvutf8n(SV *sv, STRLEN *len)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_taint
+X<sv_taint>
+
+Taint an SV. Use C<SvTAINTED_on> instead.
+ void sv_taint(SV* sv)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_unref
+X<sv_unref>
+
+Unsets the RV status of the SV, and decrements the reference count of
+whatever was being referenced by the RV. This can almost be thought of
+as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag>
+being zero. See C<SvROK_off>.
+
+ void sv_unref(SV* sv)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_usepvn
+X<sv_usepvn>
+
+Tells an SV to use C<ptr> to find its string value. Implemented by
+calling C<sv_usepvn_flags> with C<flags> of 0, hence does not handle 'set'
+magic. See C<sv_usepvn_flags>.
+
+ void sv_usepvn(SV* sv, char* ptr, STRLEN len)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_usepvn_mg
+X<sv_usepvn_mg>
+
+Like C<sv_usepvn>, but also handles 'set' magic.
+
+ void sv_usepvn_mg(SV *sv, char *ptr, STRLEN len)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_uv
+X<sv_uv>
+
+A private implementation of the C<SvUVx> macro for compilers which can't
+cope with complex macro expressions. Always use the macro instead.
+
+ UV sv_uv(SV* sv)
+
+=for hackers
+Found in file mathoms.c
=item unpack_str
X<unpack_str>
I32 unpack_str(const char *pat, const char *patend, const char *s, const char *strbeg, const char *strend, char **new_s, I32 ocnt, U32 flags)
=for hackers
+Found in file mathoms.c
+
+
+=back
+
+=head1 Functions in file pp_pack.c
+
+
+=over 8
+
+=item packlist
+X<packlist>
+
+The engine implementing pack() Perl function.
+
+ void packlist(SV *cat, const char *pat, const char *patend, SV **beglist, SV **endlist)
+
+=for hackers
+Found in file pp_pack.c
+
+=item unpackstring
+X<unpackstring>
+
+The engine implementing unpack() Perl function. C<unpackstring> puts the
+extracted list items on the stack and returns the number of elements.
+Issue C<PUTBACK> before and C<SPAGAIN> after the call to this function.
+
+ I32 unpackstring(const char *pat, const char *patend, const char *s, const char *strend, U32 flags)
+
+=for hackers
Found in file pp_pack.c
=for hackers
Found in file gv.h
-=item gv_fetchmeth
-X<gv_fetchmeth>
+=item gv_const_sv
+X<gv_const_sv>
+
+If C<gv> is a typeglob whose subroutine entry is a constant sub eligible for
+inlining, or C<gv> is a placeholder reference that would be promoted to such
+a typeglob, then returns the value returned by the sub. Otherwise, returns
+NULL.
+
+ SV* gv_const_sv(GV* gv)
+
+=for hackers
+Found in file gv.c
+
+=item gv_fetchmeth
+X<gv_fetchmeth>
Returns the glob with the given C<name> and a defined subroutine or
C<NULL>. The glob lives in the given C<stash>, or in the stashes
=for hackers
Found in file gv.c
-=item gv_fetchmethod
-X<gv_fetchmethod>
-
-See L<gv_fetchmethod_autoload>.
-
- GV* gv_fetchmethod(HV* stash, const char* name)
-
-=for hackers
-Found in file gv.c
-
=item gv_fetchmethod_autoload
X<gv_fetchmethod_autoload>
=item HeSVKEY
X<HeSVKEY>
-Returns the key as an C<SV*>, or C<Nullsv> if the hash entry does not
+Returns the key as an C<SV*>, or C<NULL> if the hash entry does not
contain an C<SV*> key.
SV* HeSVKEY(HE* he)
In 5.9.3, Newx() and friends replace the older New() API, and drops
the first parameter, I<x>, a debug aid which allowed callers to identify
-themselves. This aid has been superceded by a new build option,
+themselves. This aid has been superseded by a new build option,
PERL_MEM_LOG (see L<perlhack/PERL_MEM_LOG>). The older API is still
there for use in XS modules supporting older perls.
=item Poison
X<Poison>
-Fill up memory with a pattern (byte 0xAB over and over again) that
-hopefully catches attempts to access uninitialized memory.
+PoisonWith(0xEF) for catching access to freed memory.
void Poison(void* dest, int nitems, type)
=for hackers
Found in file handy.h
+=item PoisonNew
+X<PoisonNew>
+
+PoisonWith(0xAB) for catching access to allocated but uninitialized memory.
+
+ void PoisonNew(void* dest, int nitems, type)
+
+=for hackers
+Found in file handy.h
+
+=item PoisonWith
+X<PoisonWith>
+
+Fill up memory with a byte pattern (a byte repeated over and over
+again) that hopefully catches attempts to access uninitialized memory.
+
+ void PoisonWith(void* dest, int nitems, type, U8 byte)
+
+=for hackers
+Found in file handy.h
+
=item Renew
X<Renew>
Perl's version of what C<strndup()> would be if it existed. Returns a
pointer to a newly allocated string which is a duplicate of the first
-C<len> bytes from C<pv>. The memory allocated for the new string can be
-freed with the C<Safefree()> function.
+C<len> bytes from C<pv>, plus a trailing NUL byte. The memory allocated for
+the new string can be freed with the C<Safefree()> function.
char* savepvn(const char* pv, I32 len)
X<fbm_instr>
Returns the location of the SV in the string delimited by C<str> and
-C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
+C<strend>. It returns C<NULL> if the string can't be found. The C<sv>
does not have to be fbm_compiled, but the search will not be as fast
then.
=for hackers
Found in file util.c
+=item my_sprintf
+X<my_sprintf>
+
+The C library C<sprintf>, wrapped if necessary, to ensure that it will return
+the length of the string written to the buffer. Only rare pre-ANSI systems
+need the wrapper function - usually this is a direct call to C<sprintf>.
+
+ int my_sprintf(char *buffer, const char *pat, ...)
+
+=for hackers
+Found in file util.c
+
=item new_version
X<new_version>
=for hackers
Found in file handy.h
-=item sv_nolocking
-X<sv_nolocking>
-
-Dummy routine which "locks" an SV when there is no locking module present.
-Exists to avoid test for a NULL function pointer and because it could potentially warn under
-some level of strict-ness.
-
- void sv_nolocking(SV *)
-
-=for hackers
-Found in file util.c
-
=item sv_nosharing
X<sv_nosharing>
Dummy routine which "shares" an SV when there is no sharing module present.
-Exists to avoid test for a NULL function pointer and because it could potentially warn under
-some level of strict-ness.
-
- void sv_nosharing(SV *)
-
-=for hackers
-Found in file util.c
-
-=item sv_nounlocking
-X<sv_nounlocking>
+Or "locks" it. Or "unlocks" it. In other words, ignores its single SV argument.
+Exists to avoid test for a NULL function pointer and because it could
+potentially warn under some level of strict-ness.
-Dummy routine which "unlocks" an SV when there is no locking module present.
-Exists to avoid test for a NULL function pointer and because it could potentially warn under
-some level of strict-ness.
-
- void sv_nounlocking(SV *)
+ void sv_nosharing(SV *sv)
=for hackers
Found in file util.c
=back
+=head1 Multicall Functions
+
+=over 8
+
+=item dMULTICALL
+X<dMULTICALL>
+
+Declare local variables for a multicall. See L<perlcall/Lightweight Callbacks>.
+
+ dMULTICALL;
+
+=for hackers
+Found in file cop.h
+
+=item MULTICALL
+X<MULTICALL>
+
+Make a lightweight callback. See L<perlcall/Lightweight Callbacks>.
+
+ MULTICALL;
+
+=for hackers
+Found in file cop.h
+
+=item POP_MULTICALL
+X<POP_MULTICALL>
+
+Closing bracket for a lightweight callback.
+See L<perlcall/Lightweight Callbacks>.
+
+ POP_MULTICALL;
+
+=for hackers
+Found in file cop.h
+
+=item PUSH_MULTICALL
+X<PUSH_MULTICALL>
+
+Opening bracket for a lightweight callback.
+See L<perlcall/Lightweight Callbacks>.
+
+ PUSH_MULTICALL;
+
+=for hackers
+Found in file cop.h
+
+
+=back
+
=head1 Numeric functions
=over 8
=item newXS
X<newXS>
-Used by C<xsubpp> to hook up XSUBs as Perl subs.
+Used by C<xsubpp> to hook up XSUBs as Perl subs. I<filename> needs to be
+static storage, as it is used directly as CvFILE(), without a copy being made.
=for hackers
Found in file op.c
=for hackers
Found in file perl.c
-=item looks_like_number
-X<looks_like_number>
-
-Test if the content of an SV looks like a number (or is a number).
-C<Inf> and C<Infinity> are treated as numbers (so will not issue a
-non-numeric warning), even if your atof() doesn't grok them.
-
- I32 looks_like_number(SV* sv)
-
-=for hackers
-Found in file sv.c
-
=item newRV_inc
X<newRV_inc>
=for hackers
Found in file sv.h
-=item newRV_noinc
-X<newRV_noinc>
-
-Creates an RV wrapper for an SV. The reference count for the original
-SV is B<not> incremented.
-
- SV* newRV_noinc(SV *sv)
-
-=for hackers
-Found in file sv.c
-
-=item NEWSV
-X<NEWSV>
-
-Creates a new SV. A non-zero C<len> parameter indicates the number of
-bytes of preallocated string space the SV should have. An extra byte for a
-tailing NUL is also reserved. (SvPOK is not set for the SV even if string
-space is allocated.) The reference count for the new SV is set to 1.
-C<id> is an integer id between 0 and 1299 (used to identify leaks).
-
- SV* NEWSV(int id, STRLEN len)
-
-=for hackers
-Found in file handy.h
-
-=item newSV
-X<newSV>
-
-Create a new null SV, or if len > 0, create a new empty SVt_PV type SV
-with an initial PV allocation of len+1. Normally accessed via the C<NEWSV>
-macro.
-
- SV* newSV(STRLEN len)
-
-=for hackers
-Found in file sv.c
-
-=item newSVhek
-X<newSVhek>
-
-Creates a new SV from the hash key structure. It will generate scalars that
-point to the shared string table where possible. Returns a new (undefined)
-SV if the hek is NULL.
-
- SV* newSVhek(const HEK *hek)
-
-=for hackers
-Found in file sv.c
-
-=item newSViv
-X<newSViv>
-
-Creates a new SV and copies an integer into it. The reference count for the
-SV is set to 1.
-
- SV* newSViv(IV i)
-
-=for hackers
-Found in file sv.c
-
-=item newSVnv
-X<newSVnv>
-
-Creates a new SV and copies a floating point value into it.
-The reference count for the SV is set to 1.
-
- SV* newSVnv(NV n)
-
-=for hackers
-Found in file sv.c
-
-=item newSVpv
-X<newSVpv>
-
-Creates a new SV and copies a string into it. The reference count for the
-SV is set to 1. If C<len> is zero, Perl will compute the length using
-strlen(). For efficiency, consider using C<newSVpvn> instead.
-
- SV* newSVpv(const char* s, STRLEN len)
-
-=for hackers
-Found in file sv.c
-
-=item newSVpvf
-X<newSVpvf>
-
-Creates a new SV and initializes it with the string formatted like
-C<sprintf>.
-
- SV* newSVpvf(const char* pat, ...)
-
-=for hackers
-Found in file sv.c
-
-=item newSVpvn
-X<newSVpvn>
-
-Creates a new SV and copies a string into it. The reference count for the
-SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
-string. You are responsible for ensuring that the source string is at least
-C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined.
-
- SV* newSVpvn(const char* s, STRLEN len)
-
-=for hackers
-Found in file sv.c
-
-=item newSVpvn_share
-X<newSVpvn_share>
-
-Creates a new SV with its SvPVX_const pointing to a shared string in the string
-table. If the string does not already exist in the table, it is created
-first. Turns on READONLY and FAKE. The string's hash is stored in the UV
-slot of the SV; if the C<hash> parameter is non-zero, that value is used;
-otherwise the hash is computed. The idea here is that as the string table
-is used for shared hash keys these strings will have SvPVX_const == HeKEY and
-hash lookup will avoid string compare.
-
- SV* newSVpvn_share(const char* s, I32 len, U32 hash)
-
-=for hackers
-Found in file sv.c
-
-=item newSVrv
-X<newSVrv>
-
-Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
-it will be upgraded to one. If C<classname> is non-null then the new SV will
-be blessed in the specified package. The new SV is returned and its
-reference count is 1.
-
- SV* newSVrv(SV* rv, const char* classname)
-
-=for hackers
-Found in file sv.c
-
-=item newSVsv
-X<newSVsv>
-
-Creates a new SV which is an exact duplicate of the original SV.
-(Uses C<sv_setsv>).
-
- SV* newSVsv(SV* old)
-
-=for hackers
-Found in file sv.c
-
-=item newSVuv
-X<newSVuv>
-
-Creates a new SV and copies an unsigned integer into it.
-The reference count for the SV is set to 1.
-
- SV* newSVuv(UV u)
-
-=for hackers
-Found in file sv.c
-
=item SvCUR
X<SvCUR>
=for hackers
Found in file sv.h
+=item SvGAMAGIC
+X<SvGAMAGIC>
+
+Returns true if the SV has get magic or overloading. If either is true then
+the scalar is active data, and has the potential to return a new value every
+time it is accessed. Hence you must be careful to only read it once per user
+logical operation and work with that returned value. If neither is true then
+the scalar's value cannot change unless written to.
+
+ char* SvGAMAGIC(SV* sv)
+
+=for hackers
+Found in file sv.h
+
=item SvGROW
X<SvGROW>
=for hackers
Found in file sv.h
-=item SvROK
-X<SvROK>
+=item SvREFCNT_inc_NN
+X<SvREFCNT_inc_NN>
-Tests if the SV is an RV.
+Same as SvREFCNT_inc, but can only be used if you know I<sv>
+is not NULL. Since we don't have to check the NULLness, it's faster
+and smaller.
- bool SvROK(SV* sv)
+ SV* SvREFCNT_inc_NN(SV* sv)
=for hackers
Found in file sv.h
-=item SvROK_off
+=item SvREFCNT_inc_simple
+X<SvREFCNT_inc_simple>
+
+Same as SvREFCNT_inc, but can only be used with simple variables, not
+expressions or pointer dereferences. Since we don't have to store a
+temporary value, it's faster.
+
+ SV* SvREFCNT_inc_simple(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvREFCNT_inc_simple_NN
+X<SvREFCNT_inc_simple_NN>
+
+Same as SvREFCNT_inc_simple, but can only be used if you know I<sv>
+is not NULL. Since we don't have to check the NULLness, it's faster
+and smaller.
+
+ SV* SvREFCNT_inc_simple_NN(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvREFCNT_inc_simple_void
+X<SvREFCNT_inc_simple_void>
+
+Same as SvREFCNT_inc_simple, but can only be used if you don't need the
+return value. The macro doesn't need to return a meaningful value.
+
+ SV* SvREFCNT_inc_simple_void(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvREFCNT_inc_void
+X<SvREFCNT_inc_void>
+
+Same as SvREFCNT_inc, but can only be used if you don't need the
+return value. The macro doesn't need to return a meaningful value.
+
+ SV* SvREFCNT_inc_void(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvREFCNT_inc_void_NN
+X<SvREFCNT_inc_void_NN>
+
+Same as SvREFCNT_inc, but can only be used if you don't need the return
+value, and you know that I<sv> is not NULL. The macro doesn't need
+to return a meaningful value, or check for NULLness, so it's smaller
+and faster.
+
+ SV* SvREFCNT_inc_void_NN(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvROK
+X<SvROK>
+
+Tests if the SV is an RV.
+
+ bool SvROK(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvROK_off
X<SvROK_off>
Unsets the RV status of an SV.
=for hackers
Found in file sv.h
+=item sv_catpvn_nomg
+X<sv_catpvn_nomg>
+
+Like C<sv_catpvn> but doesn't process magic.
+
+ void sv_catpvn_nomg(SV* sv, const char* ptr, STRLEN len)
+
+=for hackers
+Found in file sv.h
+
+=item sv_catsv_nomg
+X<sv_catsv_nomg>
+
+Like C<sv_catsv> but doesn't process magic.
+
+ void sv_catsv_nomg(SV* dsv, SV* ssv)
+
+=for hackers
+Found in file sv.h
+
+=item sv_derived_from
+X<sv_derived_from>
+
+Returns a boolean indicating whether the SV is derived from the specified
+class. This is the function that implements C<UNIVERSAL::isa>. It works
+for class names as well as for objects.
+
+ bool sv_derived_from(SV* sv, const char* name)
+
+=for hackers
+Found in file universal.c
+
+=item sv_report_used
+X<sv_report_used>
+
+Dump the contents of all SVs not yet freed. (Debugging aid).
+
+ void sv_report_used()
+
+=for hackers
+Found in file sv.c
+
+=item sv_setsv_nomg
+X<sv_setsv_nomg>
+
+Like C<sv_setsv> but doesn't process magic.
+
+ void sv_setsv_nomg(SV* dsv, SV* ssv)
+
+=for hackers
+Found in file sv.h
+
+
+=back
+
+=head1 SV-Body Allocation
+
+=over 8
+
+=item looks_like_number
+X<looks_like_number>
+
+Test if the content of an SV looks like a number (or is a number).
+C<Inf> and C<Infinity> are treated as numbers (so will not issue a
+non-numeric warning), even if your atof() doesn't grok them.
+
+ I32 looks_like_number(SV* sv)
+
+=for hackers
+Found in file sv.c
+
+=item newRV_noinc
+X<newRV_noinc>
+
+Creates an RV wrapper for an SV. The reference count for the original
+SV is B<not> incremented.
+
+ SV* newRV_noinc(SV* sv)
+
+=for hackers
+Found in file sv.c
+
+=item newSV
+X<newSV>
+
+Creates a new SV. A non-zero C<len> parameter indicates the number of
+bytes of preallocated string space the SV should have. An extra byte for a
+trailing NUL is also reserved. (SvPOK is not set for the SV even if string
+space is allocated.) The reference count for the new SV is set to 1.
+
+In 5.9.3, newSV() replaces the older NEWSV() API, and drops the first
+parameter, I<x>, a debug aid which allowed callers to identify themselves.
+This aid has been superseded by a new build option, PERL_MEM_LOG (see
+L<perlhack/PERL_MEM_LOG>). The older API is still there for use in XS
+modules supporting older perls.
+
+ SV* newSV(STRLEN len)
+
+=for hackers
+Found in file sv.c
+
+=item newSVhek
+X<newSVhek>
+
+Creates a new SV from the hash key structure. It will generate scalars that
+point to the shared string table where possible. Returns a new (undefined)
+SV if the hek is NULL.
+
+ SV* newSVhek(const HEK *hek)
+
+=for hackers
+Found in file sv.c
+
+=item newSViv
+X<newSViv>
+
+Creates a new SV and copies an integer into it. The reference count for the
+SV is set to 1.
+
+ SV* newSViv(IV i)
+
+=for hackers
+Found in file sv.c
+
+=item newSVnv
+X<newSVnv>
+
+Creates a new SV and copies a floating point value into it.
+The reference count for the SV is set to 1.
+
+ SV* newSVnv(NV n)
+
+=for hackers
+Found in file sv.c
+
+=item newSVpv
+X<newSVpv>
+
+Creates a new SV and copies a string into it. The reference count for the
+SV is set to 1. If C<len> is zero, Perl will compute the length using
+strlen(). For efficiency, consider using C<newSVpvn> instead.
+
+ SV* newSVpv(const char* s, STRLEN len)
+
+=for hackers
+Found in file sv.c
+
+=item newSVpvf
+X<newSVpvf>
+
+Creates a new SV and initializes it with the string formatted like
+C<sprintf>.
+
+ SV* newSVpvf(const char* pat, ...)
+
+=for hackers
+Found in file sv.c
+
+=item newSVpvn
+X<newSVpvn>
+
+Creates a new SV and copies a string into it. The reference count for the
+SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
+string. You are responsible for ensuring that the source string is at least
+C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined.
+
+ SV* newSVpvn(const char* s, STRLEN len)
+
+=for hackers
+Found in file sv.c
+
+=item newSVpvn_share
+X<newSVpvn_share>
+
+Creates a new SV with its SvPVX_const pointing to a shared string in the string
+table. If the string does not already exist in the table, it is created
+first. Turns on READONLY and FAKE. The string's hash is stored in the UV
+slot of the SV; if the C<hash> parameter is non-zero, that value is used;
+otherwise the hash is computed. The idea here is that as the string table
+is used for shared hash keys these strings will have SvPVX_const == HeKEY and
+hash lookup will avoid string compare.
+
+ SV* newSVpvn_share(const char* s, I32 len, U32 hash)
+
+=for hackers
+Found in file sv.c
+
+=item newSVrv
+X<newSVrv>
+
+Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
+it will be upgraded to one. If C<classname> is non-null then the new SV will
+be blessed in the specified package. The new SV is returned and its
+reference count is 1.
+
+ SV* newSVrv(SV* rv, const char* classname)
+
+=for hackers
+Found in file sv.c
+
+=item newSVsv
+X<newSVsv>
+
+Creates a new SV which is an exact duplicate of the original SV.
+(Uses C<sv_setsv>).
+
+ SV* newSVsv(SV* old)
+
+=for hackers
+Found in file sv.c
+
+=item newSVuv
+X<newSVuv>
+
+Creates a new SV and copies an unsigned integer into it.
+The reference count for the SV is set to 1.
+
+ SV* newSVuv(UV u)
+
+=for hackers
+Found in file sv.c
+
=item sv_2bool
X<sv_2bool>
Using various gambits, try to get a CV from an SV; in addition, try if
possible to set C<*st> and C<*gvp> to the stash and GV associated with it.
+The flags in C<lref> are passed to sv_fetchsv.
CV* sv_2cv(SV* sv, HV** st, GV** gvp, I32 lref)
Found in file sv.c
=item sv_2pvbyte
-X<sv_2pvbyte>
-
-Return a pointer to the byte-encoded representation of the SV, and set *lp
-to its length. May cause the SV to be downgraded from UTF-8 as a
-side-effect.
-
-Usually accessed via the C<SvPVbyte> macro.
-
- char* sv_2pvbyte(SV* sv, STRLEN* lp)
-
-=for hackers
-Found in file sv.c
-
-=item sv_2pvbyte_nolen
-X<sv_2pvbyte_nolen>
+X<sv_2pvbyte>
-Return a pointer to the byte-encoded representation of the SV.
-May cause the SV to be downgraded from UTF-8 as a side-effect.
+Return a pointer to the byte-encoded representation of the SV, and set *lp
+to its length. May cause the SV to be downgraded from UTF-8 as a
+side-effect.
-Usually accessed via the C<SvPVbyte_nolen> macro.
+Usually accessed via the C<SvPVbyte> macro.
- char* sv_2pvbyte_nolen(SV* sv)
+ char* sv_2pvbyte(SV* sv, STRLEN* lp)
=for hackers
Found in file sv.c
=for hackers
Found in file sv.c
-=item sv_2pvutf8_nolen
-X<sv_2pvutf8_nolen>
-
-Return a pointer to the UTF-8-encoded representation of the SV.
-May cause the SV to be upgraded to UTF-8 as a side-effect.
-
-Usually accessed via the C<SvPVutf8_nolen> macro.
-
- char* sv_2pvutf8_nolen(SV* sv)
-
-=for hackers
-Found in file sv.c
-
=item sv_2pv_flags
X<sv_2pv_flags>
=for hackers
Found in file sv.c
-=item sv_2pv_nolen
-X<sv_2pv_nolen>
-
-Like C<sv_2pv()>, but doesn't return the length too. You should usually
-use the macro wrapper C<SvPV_nolen(sv)> instead.
- char* sv_2pv_nolen(SV* sv)
-
-=for hackers
-Found in file sv.c
-
=item sv_2uv_flags
X<sv_2uv_flags>
=for hackers
Found in file sv.c
-=item sv_catpvn_mg
-X<sv_catpvn_mg>
-
-Like C<sv_catpvn>, but also handles 'set' magic.
-
- void sv_catpvn_mg(SV *sv, const char *ptr, STRLEN len)
-
-=for hackers
-Found in file sv.c
-
-=item sv_catpvn_nomg
-X<sv_catpvn_nomg>
-
-Like C<sv_catpvn> but doesn't process magic.
-
- void sv_catpvn_nomg(SV* sv, const char* ptr, STRLEN len)
-
-=for hackers
-Found in file sv.h
-
=item sv_catpv_mg
X<sv_catpv_mg>
=for hackers
Found in file sv.c
-=item sv_catsv_mg
-X<sv_catsv_mg>
-
-Like C<sv_catsv>, but also handles 'set' magic.
-
- void sv_catsv_mg(SV *dstr, SV *sstr)
-
-=for hackers
-Found in file sv.c
-
-=item sv_catsv_nomg
-X<sv_catsv_nomg>
-
-Like C<sv_catsv> but doesn't process magic.
-
- void sv_catsv_nomg(SV* dsv, SV* ssv)
-
-=for hackers
-Found in file sv.h
-
=item sv_chop
X<sv_chop>
=for hackers
Found in file sv.c
-=item sv_derived_from
-X<sv_derived_from>
-
-Returns a boolean indicating whether the SV is derived from the specified
-class. This is the function that implements C<UNIVERSAL::isa>. It works
-for class names as well as for objects.
-
- bool sv_derived_from(SV* sv, const char* name)
-
-=for hackers
-Found in file universal.c
-
=item sv_eq
X<sv_eq>
=for hackers
Found in file sv.c
-=item sv_force_normal
-X<sv_force_normal>
-
-Undo various types of fakery on an SV: if the PV is a shared string, make
-a private copy; if we're a ref, stop refing; if we're a glob, downgrade to
-an xpvmg. See also C<sv_force_normal_flags>.
-
- void sv_force_normal(SV *sv)
-
-=for hackers
-Found in file sv.c
-
=item sv_force_normal_flags
X<sv_force_normal_flags>
=for hackers
Found in file sv.c
-=item sv_iv
-X<sv_iv>
-
-A private implementation of the C<SvIVx> macro for compilers which can't
-cope with complex macro expressions. Always use the macro instead.
-
- IV sv_iv(SV* sv)
-
-=for hackers
-Found in file sv.c
-
=item sv_len
X<sv_len>
(This is now used as a subroutine by C<sv_magic>.)
- MAGIC * sv_magicext(SV* sv, SV* obj, int how, const MGVTBL *vtbl, const char* name, I32 namlen)
+ MAGIC * sv_magicext(SV* sv, SV* obj, int how, MGVTBL *vtbl, const char* name, I32 namlen)
=for hackers
Found in file sv.c
=for hackers
Found in file sv.c
-=item sv_nv
-X<sv_nv>
-
-A private implementation of the C<SvNVx> macro for compilers which can't
-cope with complex macro expressions. Always use the macro instead.
-
- NV sv_nv(SV* sv)
-
-=for hackers
-Found in file sv.c
-
=item sv_pos_b2u
X<sv_pos_b2u>
=for hackers
Found in file sv.c
-=item sv_pv
-X<sv_pv>
-
-Use the C<SvPV_nolen> macro instead
-
- char* sv_pv(SV *sv)
-
-=for hackers
-Found in file sv.c
-
-=item sv_pvbyte
-X<sv_pvbyte>
-
-Use C<SvPVbyte_nolen> instead.
-
- char* sv_pvbyte(SV *sv)
-
-=for hackers
-Found in file sv.c
-
-=item sv_pvbyten
-X<sv_pvbyten>
-
-A private implementation of the C<SvPVbyte> macro for compilers
-which can't cope with complex macro expressions. Always use the macro
-instead.
-
- char* sv_pvbyten(SV *sv, STRLEN *len)
-
-=for hackers
-Found in file sv.c
-
=item sv_pvbyten_force
X<sv_pvbyten_force>
-A private implementation of the C<SvPVbytex_force> macro for compilers
-which can't cope with complex macro expressions. Always use the macro
-instead.
+The backend for the C<SvPVbytex_force> macro. Always use the macro instead.
char* sv_pvbyten_force(SV* sv, STRLEN* lp)
=for hackers
Found in file sv.c
-=item sv_pvn
-X<sv_pvn>
-
-A private implementation of the C<SvPV> macro for compilers which can't
-cope with complex macro expressions. Always use the macro instead.
-
- char* sv_pvn(SV *sv, STRLEN *len)
-
-=for hackers
-Found in file sv.c
-
=item sv_pvn_force
X<sv_pvn_force>
=for hackers
Found in file sv.c
-=item sv_pvutf8
-X<sv_pvutf8>
-
-Use the C<SvPVutf8_nolen> macro instead
-
- char* sv_pvutf8(SV *sv)
-
-=for hackers
-Found in file sv.c
-
-=item sv_pvutf8n
-X<sv_pvutf8n>
-
-A private implementation of the C<SvPVutf8> macro for compilers
-which can't cope with complex macro expressions. Always use the macro
-instead.
-
- char* sv_pvutf8n(SV *sv, STRLEN *len)
-
-=for hackers
-Found in file sv.c
-
=item sv_pvutf8n_force
X<sv_pvutf8n_force>
-A private implementation of the C<SvPVutf8_force> macro for compilers
-which can't cope with complex macro expressions. Always use the macro
-instead.
+The backend for the C<SvPVutf8x_force> macro. Always use the macro instead.
char* sv_pvutf8n_force(SV* sv, STRLEN* lp)
=for hackers
Found in file sv.c
-=item sv_report_used
-X<sv_report_used>
-
-Dump the contents of all SVs not yet freed. (Debugging aid).
-
- void sv_report_used()
-
-=for hackers
-Found in file sv.c
-
=item sv_reset
X<sv_reset>
Copies an integer into a new SV, optionally blessing the SV. The C<rv>
argument will be upgraded to an RV. That RV will be modified to point to
the new SV. The C<classname> argument indicates the package for the
-blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
+blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV
will have a reference count of 1, and the RV will be returned.
SV* sv_setref_iv(SV* rv, const char* classname, IV iv)
Copies a double into a new SV, optionally blessing the SV. The C<rv>
argument will be upgraded to an RV. That RV will be modified to point to
the new SV. The C<classname> argument indicates the package for the
-blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
+blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV
will have a reference count of 1, and the RV will be returned.
SV* sv_setref_nv(SV* rv, const char* classname, NV nv)
argument will be upgraded to an RV. That RV will be modified to point to
the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
into the SV. The C<classname> argument indicates the package for the
-blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
+blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV
will have a reference count of 1, and the RV will be returned.
Do not use with other Perl types such as HV, AV, SV, CV, because those
string must be specified with C<n>. The C<rv> argument will be upgraded to
an RV. That RV will be modified to point to the new SV. The C<classname>
argument indicates the package for the blessing. Set C<classname> to
-C<Nullch> to avoid the blessing. The new SV will have a reference count
+C<NULL> to avoid the blessing. The new SV will have a reference count
of 1, and the RV will be returned.
Note that C<sv_setref_pv> copies the pointer while this copies the string.
Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv>
argument will be upgraded to an RV. That RV will be modified to point to
the new SV. The C<classname> argument indicates the package for the
-blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
+blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV
will have a reference count of 1, and the RV will be returned.
SV* sv_setref_uv(SV* rv, const char* classname, UV uv)
=for hackers
Found in file sv.c
-=item sv_setsv_nomg
-X<sv_setsv_nomg>
-
-Like C<sv_setsv> but doesn't process magic.
-
- void sv_setsv_nomg(SV* dsv, SV* ssv)
-
-=for hackers
-Found in file sv.h
-
=item sv_setuv
X<sv_setuv>
=for hackers
Found in file sv.c
-=item sv_taint
-X<sv_taint>
-
-Taint an SV. Use C<SvTAINTED_on> instead.
- void sv_taint(SV* sv)
-
-=for hackers
-Found in file sv.c
-
=item sv_tainted
X<sv_tainted>
=for hackers
Found in file sv.c
-=item sv_unref
-X<sv_unref>
-
-Unsets the RV status of the SV, and decrements the reference count of
-whatever was being referenced by the RV. This can almost be thought of
-as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag>
-being zero. See C<SvROK_off>.
-
- void sv_unref(SV* sv)
-
-=for hackers
-Found in file sv.c
-
=item sv_unref_flags
X<sv_unref_flags>
=for hackers
Found in file sv.c
-=item sv_usepvn
-X<sv_usepvn>
-
-Tells an SV to use C<ptr> to find its string value. Normally the string is
-stored inside the SV but sv_usepvn allows the SV to use an outside string.
-The C<ptr> should point to memory that was allocated by C<malloc>. The
-string length, C<len>, must be supplied. This function will realloc the
-memory pointed to by C<ptr>, so that pointer should not be freed or used by
-the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
-See C<sv_usepvn_mg>.
-
- void sv_usepvn(SV* sv, char* ptr, STRLEN len)
-
-=for hackers
-Found in file sv.c
+=item sv_usepvn_flags
+X<sv_usepvn_flags>
-=item sv_usepvn_mg
-X<sv_usepvn_mg>
+Tells an SV to use C<ptr> to find its string value. Normally the
+string is stored inside the SV but sv_usepvn allows the SV to use an
+outside string. The C<ptr> should point to memory that was allocated
+by C<malloc>. The string length, C<len>, must be supplied. By default
+this function will realloc (i.e. move) the memory pointed to by C<ptr>,
+so that pointer should not be freed or used by the programmer after
+giving it to sv_usepvn, and neither should any pointers from "behind"
+that pointer (e.g. ptr + 1) be used.
-Like C<sv_usepvn>, but also handles 'set' magic.
+If C<flags> & SV_SMAGIC is true, will call SvSETMAGIC. If C<flags> &
+SV_HAS_TRAILING_NUL is true, then C<ptr[len]> must be NUL, and the realloc
+will be skipped. (i.e. the buffer is actually at least 1 byte longer than
+C<len>, and already meets the requirements for storing in C<SvPVX>)
- void sv_usepvn_mg(SV *sv, char *ptr, STRLEN len)
+ void sv_usepvn_flags(SV* sv, char* ptr, STRLEN len, U32 flags)
=for hackers
Found in file sv.c
=for hackers
Found in file sv.c
-=item sv_uv
-X<sv_uv>
-
-A private implementation of the C<SvUVx> macro for compilers which can't
-cope with complex macro expressions. Always use the macro instead.
-
- UV sv_uv(SV* sv)
-
-=for hackers
-Found in file sv.c
-
=item sv_vcatpvf
X<sv_vcatpvf>
=item is_utf8_string_loc
X<is_utf8_string_loc>
-Like is_ut8_string() but stores the location of the failure (in the
+Like is_utf8_string() but stores the location of the failure (in the
case of "utf8ness failure") or the location s+len (in the case of
"utf8ness success") in the C<ep>.
=item is_utf8_string_loclen
X<is_utf8_string_loclen>
-Like is_ut8_string() but stores the location of the failure (in the
+Like is_utf8_string() but stores the location of the failure (in the
case of "utf8ness failure") or the location s+len (in the case of
"utf8ness success") in the C<ep>, and the number of UTF-8
encoded characters in the C<el>.
The "swashp" is a pointer to the swash to use.
Both the special and normal mappings are stored lib/unicore/To/Foo.pl,
-and loaded by SWASHGET, using lib/utf8_heavy.pl. The special (usually,
+and loaded by SWASHNEW, using lib/utf8_heavy.pl. The special (usually,
but not always, a multicharacter mapping), is tried first.
The "special" is a string like "utf8::ToSpecLower", which means the
=item utf8n_to_uvchr
X<utf8n_to_uvchr>
-Returns the native character value of the first character in the string C<s>
+flags
+
+Returns the native character value of the first character in the string
+C<s>
which is assumed to be in UTF-8 encoding; C<retlen> will be set to the
length, in bytes, of that character.
updates len to contain the new length.
Returns zero on failure, setting C<len> to -1.
+If you need a copy of the string, see C<bytes_from_utf8>.
+
NOTE: this function is experimental and may change or be
removed without notice.
sidestepping the normal C order of execution. See C<warn>.
If you want to throw an exception object, assign the object to
-C<$@> and then pass C<Nullch> to croak():
+C<$@> and then pass C<NULL> to croak():
errsv = get_sv("@", TRUE);
sv_setsv(errsv, exception_object);
- croak(Nullch);
+ croak(NULL);
void croak(const char* pat, ...)
projects / p5sagit/p5-mst-13.2.git / blobdiff