+-*- buffer-read-only: t -*-
+
+!!!!!!! DO NOT EDIT THIS FILE !!!!!!!
+This file is built by autodoc.pl extracting documentation from the C source
+files.
+
=head1 NAME
perlapi - autogenerated documentation for the perl public API
Clears an array, making it empty. Does not free the memory used by the
array itself.
- void av_clear(AV* ar)
+ void av_clear(AV *av)
+
+=for hackers
+Found in file av.c
+
+=item av_create_and_push
+X<av_create_and_push>
+
+Push an SV onto the end of the array, creating the array if necessary.
+A small internal helper function to remove a commonly duplicated idiom.
+
+NOTE: this function is experimental and may change or be
+removed without notice.
+
+ void av_create_and_push(AV **const avp, SV *const val)
+
+=for hackers
+Found in file av.c
+
+=item av_create_and_unshift_one
+X<av_create_and_unshift_one>
+
+Unshifts an SV onto the beginning of the array, creating the array if
+necessary.
+A small internal helper function to remove a commonly duplicated idiom.
+
+NOTE: this function is experimental and may change or be
+removed without notice.
+
+ SV** av_create_and_unshift_one(AV **const avp, SV *const val)
=for hackers
Found in file av.c
deleted element. If C<flags> equals C<G_DISCARD>, the element is freed
and null is returned.
- SV* av_delete(AV* ar, I32 key, I32 flags)
+ SV* av_delete(AV *av, I32 key, I32 flags)
=for hackers
Found in file av.c
This relies on the fact that uninitialized array elements are set to
C<&PL_sv_undef>.
- bool av_exists(AV* ar, I32 key)
+ bool av_exists(AV *av, I32 key)
=for hackers
Found in file av.c
Pre-extend an array. The C<key> is the index to which the array should be
extended.
- void av_extend(AV* ar, I32 key)
+ void av_extend(AV *av, I32 key)
=for hackers
Found in file av.c
See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for
more information on how to use this function on tied arrays.
- SV** av_fetch(AV* ar, I32 key, I32 lval)
+ SV** av_fetch(AV *av, I32 key, I32 lval)
=for hackers
Found in file av.c
=item av_fill
X<av_fill>
-Ensure than an array has a given number of elements, equivalent to
+Set the highest index in the array to the given number, equivalent to
Perl's C<$#array = $fill;>.
- void av_fill(AV* ar, I32 fill)
+The number of elements in the an array will be C<fill + 1> after
+av_fill() returns. If the array was previously shorter then the
+additional elements appended are set to C<PL_sv_undef>. If the array
+was longer, then the excess elements are freed. C<av_fill(av, -1)> is
+the same as C<av_clear(av)>.
+
+ void av_fill(AV *av, I32 fill)
=for hackers
Found in file av.c
=item av_len
X<av_len>
-Returns the highest index in the array. Returns -1 if the array is
-empty.
+Returns the highest index in the array. The number of elements in the
+array is C<av_len(av) + 1>. Returns -1 if the array is empty.
- I32 av_len(const AV* ar)
+ I32 av_len(const AV *av)
=for hackers
Found in file av.c
into the array, so they may be freed after the call to av_make. The new AV
will have a reference count of 1.
- AV* av_make(I32 size, SV** svp)
+ AV* av_make(I32 size, SV **strp)
=for hackers
Found in file av.c
Pops an SV off the end of the array. Returns C<&PL_sv_undef> if the array
is empty.
- SV* av_pop(AV* ar)
+ SV* av_pop(AV *av)
=for hackers
Found in file av.c
Pushes an SV onto the end of the array. The array will grow automatically
to accommodate the addition.
- void av_push(AV* ar, SV* val)
+ void av_push(AV *av, SV *val)
=for hackers
Found in file av.c
=item av_shift
X<av_shift>
-Shifts an SV off the beginning of the array.
+Shifts an SV off the beginning of the array. Returns C<&PL_sv_undef> if the
+array is empty.
- SV* av_shift(AV* ar)
+ SV* av_shift(AV *av)
=for hackers
Found in file av.c
See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for
more information on how to use this function on tied arrays.
- SV** av_store(AV* ar, I32 key, SV* val)
+ SV** av_store(AV *av, I32 key, SV *val)
=for hackers
Found in file av.c
Undefines the array. Frees the memory used by the array itself.
- void av_undef(AV* ar)
+ void av_undef(AV *av)
=for hackers
Found in file av.c
array. The array will grow automatically to accommodate the addition. You
must then use C<av_store> to assign values to these new elements.
- void av_unshift(AV* ar, I32 num)
+ void av_unshift(AV *av, I32 num)
=for hackers
Found in file av.c
AV* newAV()
=for hackers
-Found in file av.c
+Found in file av.h
=item sortsv
X<sortsv>
NOTE: the perl_ form of this function is deprecated.
- I32 call_sv(SV* sv, I32 flags)
+ I32 call_sv(SV* sv, VOL I32 flags)
=for hackers
Found in file perl.c
with it we copy the stacks and the new perl interpreter is
ready to run at the exact same point as the previous one.
The pseudo-fork code uses COPY_STACKS while the
-threads->new doesn't.
+threads->create doesn't.
CLONEf_KEEP_PTR_TABLE
perl_clone keeps a ptr_table with the pointer of the old
and then throw it away and return to the original one,
you don't need to do anything.
- PerlInterpreter* perl_clone(PerlInterpreter* interp, UV flags)
+ PerlInterpreter* perl_clone(PerlInterpreter *proto_perl, UV flags)
=for hackers
Found in file sv.c
=item get_cv
X<get_cv>
-Returns the CV of the specified Perl subroutine. If C<create> is set and
-the Perl subroutine does not exist then it will be declared (which has the
-same effect as saying C<sub name;>). If C<create> is not set and the
-subroutine does not exist then NULL is returned.
+Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
+
+NOTE: the perl_ form of this function is deprecated.
+
+ CV* get_cv(const char* name, I32 flags)
+
+=for hackers
+Found in file perl.c
+
+=item get_cvn_flags
+X<get_cvn_flags>
+
+Returns the CV of the specified Perl subroutine. C<flags> are passed to
+C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
+exist then it will be declared (which has the same effect as saying
+C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
+then NULL is returned.
NOTE: the perl_ form of this function is deprecated.
- CV* get_cv(const char* name, I32 create)
+ CV* get_cvn_flags(const char* name, STRLEN len, I32 flags)
=for hackers
Found in file perl.c
Initializes a new Perl interpreter. See L<perlembed>.
- void perl_construct(PerlInterpreter* interp)
+ void perl_construct(PerlInterpreter *my_perl)
=for hackers
Found in file perl.c
Shuts down a Perl interpreter. See L<perlembed>.
- int perl_destruct(PerlInterpreter* interp)
+ int perl_destruct(PerlInterpreter *my_perl)
=for hackers
Found in file perl.c
Releases a Perl interpreter. See L<perlembed>.
- void perl_free(PerlInterpreter* interp)
+ void perl_free(PerlInterpreter *my_perl)
=for hackers
Found in file perl.c
Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
- int perl_parse(PerlInterpreter* interp, XSINIT_t xsinit, int argc, char** argv, char** env)
+ int perl_parse(PerlInterpreter *my_perl, XSINIT_t xsinit, int argc, char** argv, char** env)
=for hackers
Found in file perl.c
Tells a Perl interpreter to run. See L<perlembed>.
- int perl_run(PerlInterpreter* interp)
+ int perl_run(PerlInterpreter *my_perl)
=for hackers
Found in file perl.c
=back
+=head1 Functions in file dump.c
+
+
+=over 8
+
+=item pv_display
+X<pv_display>
+
+ char *pv_display(SV *dsv, const char *pv, STRLEN cur, STRLEN len,
+ STRLEN pvlim, U32 flags)
+
+Similar to
+
+ pv_escape(dsv,pv,cur,pvlim,PERL_PV_ESCAPE_QUOTE);
+
+except that an additional "\0" will be appended to the string when
+len > cur and pv[cur] is "\0".
+
+Note that the final string may be up to 7 chars longer than pvlim.
+
+ char* pv_display(SV *dsv, const char *pv, STRLEN cur, STRLEN len, STRLEN pvlim)
+
+=for hackers
+Found in file dump.c
+
+=item pv_escape
+X<pv_escape>
+
+ |const STRLEN count|const STRLEN max
+ |STRLEN const *escaped, const U32 flags
+
+Escapes at most the first "count" chars of pv and puts the results into
+dsv such that the size of the escaped string will not exceed "max" chars
+and will not contain any incomplete escape sequences.
+
+If flags contains PERL_PV_ESCAPE_QUOTE then any double quotes in the string
+will also be escaped.
+
+Normally the SV will be cleared before the escaped string is prepared,
+but when PERL_PV_ESCAPE_NOCLEAR is set this will not occur.
+
+If PERL_PV_ESCAPE_UNI is set then the input string is treated as Unicode,
+if PERL_PV_ESCAPE_UNI_DETECT is set then the input string is scanned
+using C<is_utf8_string()> to determine if it is Unicode.
+
+If PERL_PV_ESCAPE_ALL is set then all input chars will be output
+using C<\x01F1> style escapes, otherwise only chars above 255 will be
+escaped using this style, other non printable chars will use octal or
+common escaped patterns like C<\n>. If PERL_PV_ESCAPE_NOBACKSLASH
+then all chars below 255 will be treated as printable and
+will be output as literals.
+
+If PERL_PV_ESCAPE_FIRSTCHAR is set then only the first char of the
+string will be escaped, regardles of max. If the string is utf8 and
+the chars value is >255 then it will be returned as a plain hex
+sequence. Thus the output will either be a single char,
+an octal escape sequence, a special escape like C<\n> or a 3 or
+more digit hex value.
+
+If PERL_PV_ESCAPE_RE is set then the escape char used will be a '%' and
+not a '\\'. This is because regexes very often contain backslashed
+sequences, whereas '%' is not a particularly common character in patterns.
+
+Returns a pointer to the escaped text as held by dsv.
+
+NOTE: the perl_ form of this function is deprecated.
+
+ char* pv_escape(SV *dsv, char const * const str, const STRLEN count, const STRLEN max, STRLEN * const escaped, const U32 flags)
+
+=for hackers
+Found in file dump.c
+
+=item pv_pretty
+X<pv_pretty>
+
+ |const STRLEN count|const STRLEN max\
+ |const char const *start_color| const char const *end_color\
+ |const U32 flags
+
+Converts a string into something presentable, handling escaping via
+pv_escape() and supporting quoting and ellipses.
+
+If the PERL_PV_PRETTY_QUOTE flag is set then the result will be
+double quoted with any double quotes in the string escaped. Otherwise
+if the PERL_PV_PRETTY_LTGT flag is set then the result be wrapped in
+angle brackets.
+
+If the PERL_PV_PRETTY_ELLIPSES flag is set and not all characters in
+string were output then an ellipsis C<...> will be appended to the
+string. Note that this happens AFTER it has been quoted.
+
+If start_color is non-null then it will be inserted after the opening
+quote (if there is one) but before the escaped text. If end_color
+is non-null then it will be inserted after the escaped text but before
+any quotes or ellipses.
+
+Returns a pointer to the prettified text as held by dsv.
+
+NOTE: the perl_ form of this function is deprecated.
+
+ char* pv_pretty(SV *dsv, char const * const str, const STRLEN count, const STRLEN max, char const * const start_color, char const * const end_color, const U32 flags)
+
+=for hackers
+Found in file dump.c
+
+
+=back
+
=head1 Functions in file mathoms.c
=for hackers
Found in file mathoms.c
+=item pack_cat
+X<pack_cat>
+
+The engine implementing pack() Perl function. Note: parameters next_in_list and
+flags are not used. This call should not be used; use packlist instead.
+
+ 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 mathoms.c
+
=item sv_2pvbyte_nolen
X<sv_2pvbyte_nolen>
Like C<sv_catsv>, but also handles 'set' magic.
- void sv_catsv_mg(SV *dstr, SV *sstr)
+ void sv_catsv_mg(SV *dsv, SV *ssv)
=for hackers
Found in file mathoms.c
which can't cope with complex macro expressions. Always use the macro
instead.
- char* sv_pvbyten(SV *sv, STRLEN *len)
+ char* sv_pvbyten(SV *sv, STRLEN *lp)
=for hackers
Found in file mathoms.c
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)
+ char* sv_pvn(SV *sv, STRLEN *lp)
=for hackers
Found in file mathoms.c
which can't cope with complex macro expressions. Always use the macro
instead.
- char* sv_pvutf8n(SV *sv, STRLEN *len)
+ char* sv_pvutf8n(SV *sv, STRLEN *lp)
=for hackers
Found in file mathoms.c
=for hackers
Found in file mathoms.c
-=item sv_uv
-X<sv_uv>
+=item sv_usepvn
+X<sv_usepvn>
-A private implementation of the C<SvUVx> macro for compilers which can't
-cope with complex macro expressions. Always use the macro instead.
+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>.
- UV sv_uv(SV* sv)
+ void sv_usepvn(SV* sv, char* ptr, STRLEN len)
=for hackers
Found in file mathoms.c
+=item sv_usepvn_mg
+X<sv_usepvn_mg>
-=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 pack_cat
-X<pack_cat>
-
-The engine implementing pack() Perl function. Note: parameters next_in_list and
-flags are not used. This call should not be used; use packlist instead.
+Like C<sv_usepvn>, but also handles 'set' magic.
- void pack_cat(SV *cat, const char *pat, const char *patend, SV **beglist, SV **endlist, SV ***next_in_list, U32 flags)
+ void sv_usepvn_mg(SV *sv, char *ptr, STRLEN len)
=for hackers
-Found in file pp_pack.c
+Found in file mathoms.c
-=item unpackstring
-X<unpackstring>
+=item sv_uv
+X<sv_uv>
-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.
+A private implementation of the C<SvUVx> macro for compilers which can't
+cope with complex macro expressions. Always use the macro instead.
- I32 unpackstring(const char *pat, const char *patend, const char *s, const char *strend, U32 flags)
+ UV sv_uv(SV* sv)
=for hackers
-Found in file pp_pack.c
+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 pp_pack.c
+Found in file mathoms.c
=back
-=head1 Global Variables
+=head1 Functions in file pp_ctl.c
+
=over 8
-=item PL_modglobal
-X<PL_modglobal>
+=item find_runcv
+X<find_runcv>
-C<PL_modglobal> is a general purpose, interpreter global HV for use by
-extensions that need to keep information on a per-interpreter basis.
-In a pinch, it can also be used as a symbol table for extensions
-to share data among each other. It is a good idea to use keys
-prefixed by the package name of the extension that owns the data.
+Locate the CV corresponding to the currently executing sub or eval.
+If db_seqp is non_null, skip CVs that are in the DB package and populate
+*db_seqp with the cop sequence number at the point that the DB:: code was
+entered. (allows debuggers to eval in the scope of the breakpoint rather
+than in the scope of the debugger itself).
- HV* PL_modglobal
+ CV* find_runcv(U32 *db_seqp)
=for hackers
-Found in file intrpvar.h
+Found in file pp_ctl.c
-=item PL_na
-X<PL_na>
-
-A convenience variable which is typically used with C<SvPV> when one
-doesn't care about the length of the string. It is usually more efficient
-to either declare a local variable and use that instead or to use the
-C<SvPV_nolen> macro.
-
- STRLEN PL_na
-
-=for hackers
-Found in file thrdvar.h
-=item PL_sv_no
-X<PL_sv_no>
+=back
-This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
-C<&PL_sv_no>.
+=head1 Functions in file pp_pack.c
- SV PL_sv_no
-=for hackers
-Found in file intrpvar.h
+=over 8
-=item PL_sv_undef
-X<PL_sv_undef>
+=item packlist
+X<packlist>
-This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
+The engine implementing pack() Perl function.
- SV PL_sv_undef
+ void packlist(SV *cat, const char *pat, const char *patend, SV **beglist, SV **endlist)
=for hackers
-Found in file intrpvar.h
+Found in file pp_pack.c
-=item PL_sv_yes
-X<PL_sv_yes>
+=item unpackstring
+X<unpackstring>
-This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
-C<&PL_sv_yes>.
+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.
- SV PL_sv_yes
+ I32 unpackstring(const char *pat, const char *patend, const char *s, const char *strend, U32 flags)
=for hackers
-Found in file intrpvar.h
+Found in file pp_pack.c
=back
The argument C<level> should be either 0 or -1. If C<level==0>, as a
side-effect creates a glob with the given C<name> in the given C<stash>
which in the case of success contains an alias for the subroutine, and sets
-up caching info for this glob. Similarly for all the searched stashes.
+up caching info for this glob.
This function grants C<"SUPER"> token as a postfix of the stash name. The
GV returned from C<gv_fetchmeth> may be a method cache entry, which is not
=item gv_stashpv
X<gv_stashpv>
-Returns a pointer to the stash for a specified package. C<name> should
-be a valid UTF-8 string and must be null-terminated. If C<create> is set
-then the package will be created if it does not already exist. If C<create>
-is not set and the package does not exist then NULL is returned.
+Returns a pointer to the stash for a specified package. Uses C<strlen> to
+determine the length of C<name>, then calls C<gv_stashpvn()>.
- HV* gv_stashpv(const char* name, I32 create)
+ HV* gv_stashpv(const char* name, I32 flags)
=for hackers
Found in file gv.c
=item gv_stashpvn
X<gv_stashpvn>
-Returns a pointer to the stash for a specified package. C<name> should
-be a valid UTF-8 string. The C<namelen> parameter indicates the length of
-the C<name>, in bytes. If C<create> is set then the package will be
-created if it does not already exist. If C<create> is not set and the
-package does not exist then NULL is returned.
+Returns a pointer to the stash for a specified package. The C<namelen>
+parameter indicates the length of the C<name>, in bytes. C<flags> is passed
+to C<gv_fetchpvn_flags()>, so if set to C<GV_ADD> then the package will be
+created if it does not already exist. If the package does not exist and
+C<flags> is 0 (or any other setting that does not create packages) then NULL
+is returned.
- HV* gv_stashpvn(const char* name, U32 namelen, I32 create)
+
+ HV* gv_stashpvn(const char* name, U32 namelen, I32 flags)
=for hackers
Found in file gv.c
+=item gv_stashpvs
+X<gv_stashpvs>
+
+Like C<gv_stashpvn>, but takes a literal string instead of a string/length pair.
+
+ HV* gv_stashpvs(const char* name, I32 create)
+
+=for hackers
+Found in file handy.h
+
=item gv_stashsv
X<gv_stashsv>
-Returns a pointer to the stash for a specified package, which must be a
-valid UTF-8 string. See C<gv_stashpv>.
+Returns a pointer to the stash for a specified package. See C<gv_stashpvn>.
- HV* gv_stashsv(SV* sv, I32 create)
+ HV* gv_stashsv(SV* sv, I32 flags)
=for hackers
Found in file gv.c
Null AV pointer.
+(deprecated - use C<(AV *)NULL> instead)
+
=for hackers
Found in file av.h
=item Nullch
X<Nullch>
-Null character pointer.
+Null character pointer. (No longer available when C<PERL_CORE> is defined.)
=for hackers
Found in file handy.h
Null CV pointer.
+(deprecated - use C<(CV *)NULL> instead)
+
=for hackers
Found in file cv.h
Null HV pointer.
+(deprecated - use C<(HV *)NULL> instead)
+
=for hackers
Found in file hv.h
=item Nullsv
X<Nullsv>
-Null SV pointer.
+Null SV pointer. (No longer available when C<PERL_CORE> is defined.)
=for hackers
Found in file handy.h
variable. Remember though, that hash keys in perl are free to contain
embedded nulls, so using C<strlen()> or similar is not a good way to find
the length of hash keys. This is very similar to the C<SvPV()> macro
-described elsewhere in this document.
+described elsewhere in this document. See also C<HeUTF8>.
+
+If you are using C<HePV> to get values to pass to C<newSVpvn()> to create a
+new SV, you should consider using C<newSVhek(HeKEY_hek(he))> as it is more
+efficient.
char* HePV(HE* he, STRLEN len)
=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)
=for hackers
Found in file hv.h
+=item HeUTF8
+X<HeUTF8>
+
+Returns whether the C<char *> value returned by C<HePV> is encoded in UTF-8,
+doing any necessary dereferencing of possibly C<SV*> keys. The value returned
+will be 0 or non-0, not necessarily 1 (or even a value with any low bits set),
+so B<do not> blindly assign this to a C<bool> variable, as C<bool> may be a
+typedef for C<char>.
+
+ char* HeUTF8(HE* he, STRLEN len)
+
+=for hackers
+Found in file hv.h
+
=item HeVAL
X<HeVAL>
Check that a hash is in an internally consistent state.
- void hv_assert(HV* tb)
+ void hv_assert(HV *hv)
=for hackers
Found in file hv.c
Clears a hash, making it empty.
- void hv_clear(HV* tb)
+ void hv_clear(HV *hv)
=for hackers
Found in file hv.c
future point. This function clears any such placeholder keys from the hash.
See Hash::Util::lock_keys() for an example of its use.
- void hv_clear_placeholders(HV* hb)
+ void hv_clear_placeholders(HV *hv)
=for hackers
Found in file hv.c
The C<flags> value will normally be zero; if set to G_DISCARD then NULL
will be returned.
- SV* hv_delete(HV* tb, const char* key, I32 klen, I32 flags)
+ SV* hv_delete(HV *hv, const char *key, I32 klen, I32 flags)
=for hackers
Found in file hv.c
if set to G_DISCARD then NULL will be returned. C<hash> can be a valid
precomputed hash value, or 0 to ask for it to be computed.
- SV* hv_delete_ent(HV* tb, SV* key, I32 flags, U32 hash)
+ SV* hv_delete_ent(HV *hv, SV *keysv, I32 flags, U32 hash)
=for hackers
Found in file hv.c
Returns a boolean indicating whether the specified hash key exists. The
C<klen> is the length of the key.
- bool hv_exists(HV* tb, const char* key, I32 klen)
+ bool hv_exists(HV *hv, const char *key, I32 klen)
=for hackers
Found in file hv.c
can be a valid precomputed hash value, or 0 to ask for it to be
computed.
- bool hv_exists_ent(HV* tb, SV* key, U32 hash)
+ bool hv_exists_ent(HV *hv, SV *keysv, U32 hash)
=for hackers
Found in file hv.c
See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more
information on how to use this function on tied hashes.
- SV** hv_fetch(HV* tb, const char* key, I32 klen, I32 lval)
+ SV** hv_fetch(HV *hv, const char *key, I32 klen, I32 lval)
=for hackers
Found in file hv.c
+=item hv_fetchs
+X<hv_fetchs>
+
+Like C<hv_fetch>, but takes a literal string instead of a string/length pair.
+
+ SV** hv_fetchs(HV* tb, const char* key, I32 lval)
+
+=for hackers
+Found in file handy.h
+
=item hv_fetch_ent
X<hv_fetch_ent>
See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more
information on how to use this function on tied hashes.
- HE* hv_fetch_ent(HV* tb, SV* key, I32 lval, U32 hash)
+ HE* hv_fetch_ent(HV *hv, SV *keysv, I32 lval, U32 hash)
=for hackers
Found in file hv.c
value, you can get it through the macro C<HvFILL(tb)>.
- I32 hv_iterinit(HV* tb)
+ I32 hv_iterinit(HV *hv)
=for hackers
Found in file hv.c
your iterator immediately else the entry will leak - call C<hv_iternext> to
trigger the resource deallocation.
- HE* hv_iternext(HV* tb)
+ HE* hv_iternext(HV *hv)
=for hackers
Found in file hv.c
Performs an C<hv_iternext>, C<hv_iterkey>, and C<hv_iterval> in one
operation.
- SV* hv_iternextsv(HV* hv, char** key, I32* retlen)
+ SV* hv_iternextsv(HV *hv, char **key, I32 *retlen)
=for hackers
Found in file hv.c
NOTE: this function is experimental and may change or be
removed without notice.
- HE* hv_iternext_flags(HV* tb, I32 flags)
+ HE* hv_iternext_flags(HV *hv, I32 flags)
=for hackers
Found in file hv.c
Returns the value from the current position of the hash iterator. See
C<hv_iterkey>.
- SV* hv_iterval(HV* tb, HE* entry)
+ SV* hv_iterval(HV *hv, HE *entry)
=for hackers
Found in file hv.c
Adds magic to a hash. See C<sv_magic>.
- void hv_magic(HV* hv, GV* gv, int how)
+ void hv_magic(HV *hv, GV *gv, int how)
=for hackers
Found in file hv.c
Evaluates the hash in scalar context and returns the result. Handles magic when the hash is tied.
- SV* hv_scalar(HV* hv)
+ SV* hv_scalar(HV *hv)
=for hackers
Found in file hv.c
See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more
information on how to use this function on tied hashes.
- SV** hv_store(HV* tb, const char* key, I32 klen, SV* val, U32 hash)
+ SV** hv_store(HV *hv, const char *key, I32 klen, SV *val, U32 hash)
=for hackers
Found in file hv.c
+=item hv_stores
+X<hv_stores>
+
+Like C<hv_store>, but takes a literal string instead of a string/length pair
+and omits the hash parameter.
+
+ SV** hv_stores(HV* tb, const char* key, NULLOK SV* val)
+
+=for hackers
+Found in file handy.h
+
=item hv_store_ent
X<hv_store_ent>
See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more
information on how to use this function on tied hashes.
- HE* hv_store_ent(HV* tb, SV* key, SV* val, U32 hash)
+ HE* hv_store_ent(HV *hv, SV *key, SV *val, U32 hash)
=for hackers
Found in file hv.c
Undefines the hash.
- void hv_undef(HV* tb)
+ void hv_undef(HV *hv)
=for hackers
Found in file hv.c
HV* newHV()
=for hackers
-Found in file hv.c
+Found in file hv.h
=back
Copies the magic from one SV to another. See C<sv_magic>.
- int mg_copy(SV* sv, SV* nsv, const char* key, I32 klen)
+ int mg_copy(SV *sv, SV *nsv, const char *key, I32 klen)
=for hackers
Found in file mg.c
=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 PoisonFree
+X<PoisonFree>
+
+PoisonWith(0xEF) for catching access to freed memory.
+
+ void PoisonFree(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)
=for hackers
Found in file util.c
+=item savepvs
+X<savepvs>
+
+Like C<savepvn>, but takes a literal string instead of a string/length pair.
+
+ char* savepvs(const char* s)
+
+=for hackers
+Found in file handy.h
+
=item savesharedpv
X<savesharedpv>
=for hackers
Found in file util.c
+=item savesharedpvn
+X<savesharedpvn>
+
+A version of C<savepvn()> which allocates the duplicate string in memory
+which is shared between threads. (With the specific difference that a NULL
+pointer is not acceptable)
+
+ char* savesharedpvn(const char *const pv, const STRLEN len)
+
+=for hackers
+Found in file util.c
+
=item savesvpv
X<savesvpv>
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.
- char* fbm_instr(unsigned char* big, unsigned char* bigend, SV* littlesv, U32 flags)
+ char* fbm_instr(unsigned char* big, unsigned char* bigend, SV* littlestr, U32 flags)
=for hackers
Found in file util.c
=for hackers
Found in file util.c
+=item my_snprintf
+X<my_snprintf>
+
+The C library C<snprintf> functionality, if available and
+standards-compliant (uses C<vsnprintf>, actually). However, if the
+C<vsnprintf> is not available, will unfortunately use the unsafe
+C<vsprintf> which can overrun the buffer (there is an overrun check,
+but that may be too late). Consider using C<sv_vcatpvf> instead, or
+getting C<vsnprintf>.
+
+ int my_snprintf(char *buffer, const Size_t len, const char *format, ...)
+
+=for hackers
+Found in file util.c
+
=item my_sprintf
X<my_sprintf>
=for hackers
Found in file util.c
-=item new_version
+=item my_vsnprintf
+X<my_vsnprintf>
+
+The C library C<vsnprintf> if available and standards-compliant.
+However, if if the C<vsnprintf> is not available, will unfortunately
+use the unsafe C<vsprintf> which can overrun the buffer (there is an
+overrun check, but that may be too late). Consider using
+C<sv_vcatpvf> instead, or getting C<vsnprintf>.
+
+ int my_vsnprintf(char *buffer, const Size_t len, const char *format, va_list ap)
+
+=for hackers
+Found in file util.c
+
+=item new_version
X<new_version>
Returns a new version object based on the passed in SV:
Function must be called with an already existing SV like
sv = newSV(0);
- s = scan_version(s,SV *sv, bool qv);
+ s = scan_version(s, SV *sv, bool qv);
Performs some preprocessing to the string to ensure that
it has the correct characteristics of a version. Flags the
object if it contains an underscore (which denotes this
-is a alpha version). The boolean qv denotes that the version
+is an alpha version). The boolean qv denotes that the version
should be interpreted as if it had multiple decimals, even if
it doesn't.
- const char* scan_version(const char *vstr, SV *sv, bool qv)
+ const char* scan_version(const char *s, SV *rv, bool qv)
=for hackers
Found in file util.c
=for hackers
Found in file handy.h
+=item sv_destroyable
+X<sv_destroyable>
+
+Dummy routine which reports that object can be destroyed when there is no
+sharing module present. It ignores its single SV argument, and returns
+'true'. Exists to avoid test for a NULL function pointer and because it
+could potentially warn under some level of strict-ness.
+
+ bool sv_destroyable(SV *sv)
+
+=for hackers
+Found in file util.c
+
=item sv_nosharing
X<sv_nosharing>
In-place upgrade of the supplied SV to a version object.
- SV *sv = upg_version(SV *sv);
+ SV *sv = upg_version(SV *sv, bool qv);
-Returns a pointer to the upgraded SV.
+Returns a pointer to the upgraded SV. Set the boolean qv if you want
+to force this SV to be interpreted as an "extended" version.
- SV* upg_version(SV *ver)
+ SV* upg_version(SV *ver, bool qv)
=for hackers
Found in file util.c
Version object aware cmp. Both operands must already have been
converted into version objects.
- int vcmp(SV *lvs, SV *rvs)
+ int vcmp(SV *lhv, SV *rhv)
=for hackers
Found in file util.c
=back
+=head1 MRO Functions
+
+=over 8
+
+=item mro_get_linear_isa
+X<mro_get_linear_isa>
+
+Returns either C<mro_get_linear_isa_c3> or
+C<mro_get_linear_isa_dfs> for the given stash,
+dependant upon which MRO is in effect
+for that stash. The return value is a
+read-only AV*.
+
+You are responsible for C<SvREFCNT_inc()> on the
+return value if you plan to store it anywhere
+semi-permanently (otherwise it might be deleted
+out from under you the next time the cache is
+invalidated).
+
+ AV* mro_get_linear_isa(HV* stash)
+
+=for hackers
+Found in file mro.c
+
+=item mro_method_changed_in
+X<mro_method_changed_in>
+
+Invalidates method caching on any child classes
+of the given stash, so that they might notice
+the changes in this one.
+
+Ideally, all instances of C<PL_sub_generation++> in
+perl source outside of C<mro.c> should be
+replaced by calls to this.
+
+Perl automatically handles most of the common
+ways a method might be redefined. However, there
+are a few ways you could change a method in a stash
+without the cache code noticing, in which case you
+need to call this method afterwards:
+
+1) Directly manipulating the stash HV entries from
+XS code.
+
+2) Assigning a reference to a readonly scalar
+constant into a stash entry in order to create
+a constant subroutine (like constant.pm
+does).
+
+This same method is available from pure perl
+via, C<mro::method_changed_in(classname)>.
+
+ void mro_method_changed_in(HV* stash)
+
+=for hackers
+Found in file mro.c
+
+
+=back
+
=head1 Multicall Functions
=over 8
=for hackers
Found in file numeric.c
+=item Perl_signbit
+X<Perl_signbit>
+
+Return a non-zero integer if the sign bit on an NV is set, and 0 if
+it is not.
+
+If Configure detects this system has a signbit() that will work with
+our NVs, then we just use it via the #define in perl.h. Otherwise,
+fall back on this implementation. As a first pass, this gets everything
+right except -0.0. Alas, catching -0.0 is the main use for this function,
+so this is not too helpful yet. Still, at least we have the scaffolding
+in place to support other systems, should that prove useful.
+
+
+Configure notes: This function is called 'Perl_signbit' instead of a
+plain 'signbit' because it is easy to imagine a system having a signbit()
+function or macro that doesn't happen to work with our particular choice
+of NVs. We shouldn't just re-#define signbit as Perl_signbit and expect
+the standard system headers to be happy. Also, this is a no-context
+function (no pTHX_) because Perl_signbit() is usually re-#defined in
+perl.h as a simple macro call to the system's signbit().
+Users should just always call Perl_signbit().
+
+NOTE: this function is experimental and may change or be
+removed without notice.
+
+ int Perl_signbit(NV f)
+
+=for hackers
+Found in file numeric.c
+
=item scan_bin
X<scan_bin>
=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
=back
+=head1 Per-Interpreter Variables
+
+=over 8
+
+=item PL_modglobal
+X<PL_modglobal>
+
+C<PL_modglobal> is a general purpose, interpreter global HV for use by
+extensions that need to keep information on a per-interpreter basis.
+In a pinch, it can also be used as a symbol table for extensions
+to share data among each other. It is a good idea to use keys
+prefixed by the package name of the extension that owns the data.
+
+ HV* PL_modglobal
+
+=for hackers
+Found in file intrpvar.h
+
+=item PL_na
+X<PL_na>
+
+A convenience variable which is typically used with C<SvPV> when one
+doesn't care about the length of the string. It is usually more efficient
+to either declare a local variable and use that instead or to use the
+C<SvPV_nolen> macro.
+
+ STRLEN PL_na
+
+=for hackers
+Found in file intrpvar.h
+
+=item PL_sv_no
+X<PL_sv_no>
+
+This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
+C<&PL_sv_no>.
+
+ SV PL_sv_no
+
+=for hackers
+Found in file intrpvar.h
+
+=item PL_sv_undef
+X<PL_sv_undef>
+
+This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
+
+ SV PL_sv_undef
+
+=for hackers
+Found in file intrpvar.h
+
+=item PL_sv_yes
+X<PL_sv_yes>
+
+This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
+C<&PL_sv_yes>.
+
+ SV PL_sv_yes
+
+=for hackers
+Found in file intrpvar.h
+
+
+=back
+
+=head1 REGEXP Functions
+
+=over 8
+
+=item SvRX
+X<SvRX>
+
+Convenience macro to get the REGEXP from a SV. This is approximately
+equivalent to the following snippet:
+
+ if (SvMAGICAL(sv))
+ mg_get(sv);
+ if (SvROK(sv) &&
+ (tmpsv = (SV*)SvRV(sv)) &&
+ SvTYPE(tmpsv) == SVt_PVMG &&
+ (tmpmg = mg_find(tmpsv, PERL_MAGIC_qr)))
+ {
+ return (REGEXP *)tmpmg->mg_obj;
+ }
+
+NULL will be returned if a REGEXP* is not found.
+
+ REGEXP * SvRX(SV *sv)
+
+=for hackers
+Found in file regexp.h
+
+=item SvRXOK
+X<SvRXOK>
+
+Returns a boolean indicating whether the SV contains qr magic
+(PERL_MAGIC_qr).
+
+If you want to do something with the REGEXP* later use SvRX instead
+and check for NULL.
+
+ bool SvRXOK(SV* sv)
+
+=for hackers
+Found in file regexp.h
+
+
+=back
+
=head1 Simple Exception Handling Macros
=over 8
X<mPUSHi>
Push an integer onto the stack. The stack must have room for this element.
-Handles 'set' magic. Does not use C<TARG>. See also C<PUSHi>, C<mXPUSHi>
-and C<XPUSHi>.
+Does not use C<TARG>. See also C<PUSHi>, C<mXPUSHi> and C<XPUSHi>.
void mPUSHi(IV iv)
X<mPUSHn>
Push a double onto the stack. The stack must have room for this element.
-Handles 'set' magic. Does not use C<TARG>. See also C<PUSHn>, C<mXPUSHn>
-and C<XPUSHn>.
+Does not use C<TARG>. See also C<PUSHn>, C<mXPUSHn> and C<XPUSHn>.
void mPUSHn(NV nv)
X<mPUSHp>
Push a string onto the stack. The stack must have room for this element.
-The C<len> indicates the length of the string. Handles 'set' magic. Does
-
not use C<TARG>. See also C<PUSHp>, C<mXPUSHp> and C<XPUSHp>.
+The C<len> indicates the length of the string. Does not use C<TARG>.
+See also C<PUSHp>, C<mXPUSHp> and C<XPUSHp>.
void mPUSHp(char* str, STRLEN len)
=for hackers
Found in file pp.h
+=item mPUSHs
+X<mPUSHs>
+
+Push an SV onto the stack and mortalizes the SV. The stack must have room
+for this element. Does not use C<TARG>. See also C<PUSHs> and C<mXPUSHs>.
+
+ void mPUSHs(SV* sv)
+
+=for hackers
+Found in file pp.h
+
=item mPUSHu
X<mPUSHu>
Push an unsigned integer onto the stack. The stack must have room for this
-element. Handles 'set' magic. Does not use C<TARG>. See also C<PUSHu>,
-C<mXPUSHu> and C<XPUSHu>.
+element. Does not use C<TARG>. See also C<PUSHu>, C<mXPUSHu> and C<XPUSHu>.
void mPUSHu(UV uv)
=item mXPUSHi
X<mXPUSHi>
-Push an integer onto the stack, extending the stack if necessary. Handles
-'set' magic. Does not use C<TARG>. See also C<XPUSHi>, C<mPUSHi> and
-C<PUSHi>.
+Push an integer onto the stack, extending the stack if necessary.
+Does not use C<TARG>. See also C<XPUSHi>, C<mPUSHi> and C<PUSHi>.
void mXPUSHi(IV iv)
=item mXPUSHn
X<mXPUSHn>
-Push a double onto the stack, extending the stack if necessary. Handles
-'set' magic. Does not use C<TARG>. See also C<XPUSHn>, C<mPUSHn> and
-C<PUSHn>.
+Push a double onto the stack, extending the stack if necessary.
+Does not use C<TARG>. See also C<XPUSHn>, C<mPUSHn> and C<PUSHn>.
void mXPUSHn(NV nv)
X<mXPUSHp>
Push a string onto the stack, extending the stack if necessary. The C<len>
-indicates the length of the string. Handles 'set' magic. Does not use
-C<
TARG>. See also C<XPUSHp>, C<mPUSHp> and C<PUSHp>.
+indicates the length of the string. Does not use C<TARG>. See also C<XPUSHp>,
+C<mPUSHp> and C<PUSHp>.
void mXPUSHp(char* str, STRLEN len)
=for hackers
Found in file pp.h
+=item mXPUSHs
+X<mXPUSHs>
+
+Push an SV onto the stack, extending the stack if necessary and mortalizes
+the SV. Does not use C<TARG>. See also C<XPUSHs> and C<mPUSHs>.
+
+ void mXPUSHs(SV* sv)
+
+=for hackers
+Found in file pp.h
+
=item mXPUSHu
X<mXPUSHu>
Push an unsigned integer onto the stack, extending the stack if necessary.
-Handles 'set' magic. Does not use C<TARG>. See also C<XPUSHu>, C<mPUSHu>
-and C<PUSHu>.
+Does not use C<TARG>. See also C<XPUSHu>, C<mPUSHu> and C<PUSHu>.
void mXPUSHu(UV uv)
X<PUSHmortal>
Push a new mortal SV onto the stack. The stack must have room for this
-element. Does not handle 'set' magic. Does not use C<TARG>. See also
-C<PUSHs>, C<XPUSHmortal> and C<XPUSHs>.
+element. Does not use C<TARG>. See also C<PUSHs>, C<XPUSHmortal> and C<XPUSHs>.
void PUSHmortal()
=item XPUSHmortal
X<XPUSHmortal>
-Push a new mortal SV onto the stack, extending the stack if necessary. Does
-not handle 'set' magic. Does not use C<TARG>. See also C<XPUSHs>,
-C<PUSHmortal> and C<PUSHs>.
+Push a new mortal SV onto the stack, extending the stack if necessary.
+Does not use C<TARG>. See also C<XPUSHs>, C<PUSHmortal> and C<PUSHs>.
void XPUSHmortal()
=over 8
+=item croak_xs_usage
+X<croak_xs_usage>
+
+A specialised variant of C<croak()> for emitting the usage message for xsubs
+
+ croak_xs_usage(cv, "eee_yow");
+
+works out the package name and subroutine name from C<cv>, and then calls
+C<croak()>. Hence if C<cv> is C<&ouch::awk>, it would call C<croak> as:
+
+ Perl_croak(aTHX_ "Usage %s::%s(%s)", "ouch" "awk", "eee_yow");
+
+ void croak_xs_usage(const CV *const cv, const char *const params)
+
+=for hackers
+Found in file universal.c
+
=item get_sv
X<get_sv>
=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>
+=item newSVpvn_utf8
+X<newSVpvn_utf8>
-Creates an RV wrapper for an SV. The reference count for the original
-SV is B<not> incremented.
+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>.
- SV* newRV_noinc(SV *sv)
+ SV* newSVpvn_utf8(NULLOK const char* s, STRLEN len, U32 utf8)
=for hackers
-Found in file sv.c
-
-=item newSV
-X<newSV>
+Found in file sv.h
-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.
+=item SvCUR
+X<SvCUR>
-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.
+Returns the length of the string which is in the SV. See C<SvLEN>.
- SV* newSV(STRLEN len)
+ STRLEN SvCUR(SV* sv)
=for hackers
-Found in file sv.c
+Found in file sv.h
-=item newSVhek
-X<newSVhek>
+=item SvCUR_set
+X<SvCUR_set>
-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.
+Set the current length of the string which is in the SV. See C<SvCUR>
+and C<SvIV_set>.
- SV* newSVhek(const HEK *hek)
+ void SvCUR_set(SV* sv, STRLEN len)
=for hackers
-Found in file sv.c
+Found in file sv.h
-=item newSViv
-X<newSViv>
+=item SvEND
+X<SvEND>
-Creates a new SV and copies an integer into it. The reference count for the
-SV is set to 1.
+Returns a pointer to the last character in the string which is in the SV.
+See C<SvCUR>. Access the character as *(SvEND(sv)).
- SV* newSViv(IV i)
+ char* SvEND(SV* sv)
=for hackers
-Found in file sv.c
+Found in file sv.h
-=item newSVnv
-X<newSVnv>
+=item SvGAMAGIC
+X<SvGAMAGIC>
-Creates a new SV and copies a floating point value into it.
-The reference count for the SV is set to 1.
+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.
- SV* newSVnv(NV n)
+ char* SvGAMAGIC(SV* sv)
=for hackers
-Found in file sv.c
+Found in file sv.h
-=item newSVpv
-X<newSVpv>
+=item SvGROW
+X<SvGROW>
-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.
+Expands the character buffer in the SV so that it has room for the
+indicated number of bytes (remember to reserve space for an extra trailing
+NUL character). Calls C<sv_grow> to perform the expansion if necessary.
+Returns a pointer to the character buffer.
- SV* newSVpv(const char* s, STRLEN len)
+ char * SvGROW(SV* sv, STRLEN len)
=for hackers
-Found in file sv.c
+Found in file sv.h
-=item newSVpvf
-X<newSVpvf>
+=item SvIOK
+X<SvIOK>
-Creates a new SV and initializes it with the string formatted like
-C<sprintf>.
+Returns a U32 value indicating whether the SV contains an integer.
- SV* newSVpvf(const char* pat, ...)
+ U32 SvIOK(SV* sv)
=for hackers
-Found in file sv.c
+Found in file sv.h
-=item newSVpvn
-X<newSVpvn>
+=item SvIOKp
+X<SvIOKp>
-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.
+Returns a U32 value indicating whether the SV contains an integer. Checks
+the B<private> setting. Use C<SvIOK>.
- SV* newSVpvn(const char* s, STRLEN len)
+ U32 SvIOKp(SV* sv)
=for hackers
-Found in file sv.c
+Found in file sv.h
-=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>
-
-Returns the length of the string which is in the SV. See C<SvLEN>.
-
- STRLEN SvCUR(SV* sv)
-
-=for hackers
-Found in file sv.h
-
-=item SvCUR_set
-X<SvCUR_set>
-
-Set the current length of the string which is in the SV. See C<SvCUR>
-and C<SvIV_set>.
-
- void SvCUR_set(SV* sv, STRLEN len)
-
-=for hackers
-Found in file sv.h
-
-=item SvEND
-X<SvEND>
-
-Returns a pointer to the last character in the string which is in the SV.
-See C<SvCUR>. Access the character as *(SvEND(sv)).
-
- char* SvEND(SV* sv)
-
-=for hackers
-Found in file sv.h
-
-=item SvGROW
-X<SvGROW>
-
-Expands the character buffer in the SV so that it has room for the
-indicated number of bytes (remember to reserve space for an extra trailing
-NUL character). Calls C<sv_grow> to perform the expansion if necessary.
-Returns a pointer to the character buffer.
-
- char * SvGROW(SV* sv, STRLEN len)
-
-=for hackers
-Found in file sv.h
-
-=item SvIOK
-X<SvIOK>
-
-Returns a boolean indicating whether the SV contains an integer.
-
- bool SvIOK(SV* sv)
-
-=for hackers
-Found in file sv.h
-
-=item SvIOKp
-X<SvIOKp>
-
-Returns a boolean indicating whether the SV contains an integer. Checks
-the B<private> setting. Use C<SvIOK>.
-
- bool SvIOKp(SV* sv)
-
-=for hackers
-Found in file sv.h
-
-=item SvIOK_notUV
-X<SvIOK_notUV>
+=item SvIOK_notUV
+X<SvIOK_notUV>
Returns a boolean indicating whether the SV contains a signed integer.
=item SvIV
X<SvIV>
-Coerces the given SV to an integer and returns it. See C<SvIVx> for a
+Coerces the given SV to an integer and returns it. See C<SvIVx> for a
version which guarantees to evaluate sv only once.
IV SvIV(SV* sv)
X<SvIVx>
Coerces the given SV to an integer and returns it. Guarantees to evaluate
-sv only once. Use the more efficient C<SvIV> otherwise.
+C<sv> only once. Only use this if C<sv> is an expression with side effects,
+otherwise use the more efficient C<SvIV>.
IV SvIVx(SV* sv)
=item SvNIOK
X<SvNIOK>
-Returns a boolean indicating whether the SV contains a number, integer or
+Returns a U32 value indicating whether the SV contains a number, integer or
double.
- bool SvNIOK(SV* sv)
+ U32 SvNIOK(SV* sv)
=for hackers
Found in file sv.h
=item SvNIOKp
X<SvNIOKp>
-Returns a boolean indicating whether the SV contains a number, integer or
+Returns a U32 value indicating whether the SV contains a number, integer or
double. Checks the B<private> setting. Use C<SvNIOK>.
- bool SvNIOKp(SV* sv)
+ U32 SvNIOKp(SV* sv)
=for hackers
Found in file sv.h
=item SvNOK
X<SvNOK>
-Returns a boolean indicating whether the SV contains a double.
+Returns a U32 value indicating whether the SV contains a double.
- bool SvNOK(SV* sv)
+ U32 SvNOK(SV* sv)
=for hackers
Found in file sv.h
=item SvNOKp
X<SvNOKp>
-Returns a boolean indicating whether the SV contains a double. Checks the
+Returns a U32 value indicating whether the SV contains a double. Checks the
B<private> setting. Use C<SvNOK>.
- bool SvNOKp(SV* sv)
+ U32 SvNOKp(SV* sv)
=for hackers
Found in file sv.h
=item SvNV
X<SvNV>
-Coerce the given SV to a double and return it. See C<SvNVx> for a version
+Coerce the given SV to a double and return it. See C<SvNVx> for a version
which guarantees to evaluate sv only once.
NV SvNV(SV* sv)
X<SvNVx>
Coerces the given SV to a double and returns it. Guarantees to evaluate
-sv only once. Use the more efficient C<SvNV> otherwise.
+C<sv> only once. Only use this if C<sv> is an expression with side effects,
+otherwise use the more efficient C<SvNV>.
NV SvNVx(SV* sv)
=item SvOK
X<SvOK>
-Returns a boolean indicating whether the value is an SV. It also tells
+Returns a U32 value indicating whether the value is an SV. It also tells
whether the value is defined or not.
- bool SvOK(SV* sv)
+ U32 SvOK(SV* sv)
=for hackers
Found in file sv.h
=item SvOOK
X<SvOOK>
-Returns a boolean 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.
- bool SvOOK(SV* sv)
+ U32 SvOOK(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvOOK_offset
+X<SvOOK_offset>
+
+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.
+
+ void SvOOK_offset(NN SV*sv, STRLEN len)
=for hackers
Found in file sv.h
=item SvPOK
X<SvPOK>
-Returns a boolean indicating whether the SV contains a character
+Returns a U32 value indicating whether the SV contains a character
string.
- bool SvPOK(SV* sv)
+ U32 SvPOK(SV* sv)
=for hackers
Found in file sv.h
=item SvPOKp
X<SvPOKp>
-Returns a boolean indicating whether the SV contains a character string.
+Returns a U32 value indicating whether the SV contains a character string.
Checks the B<private> setting. Use C<SvPOK>.
- bool SvPOKp(SV* sv)
+ U32 SvPOKp(SV* sv)
=for hackers
Found in file sv.h
=item SvPVx
X<SvPVx>
-A version of C<SvPV> which guarantees to evaluate sv only once.
+A version of C<SvPV> which guarantees to evaluate C<sv> only once.
+Only use this if C<sv> is an expression with side effects, otherwise use the
+more efficient C<SvPVX>.
char* SvPVx(SV* sv, STRLEN len)
Increments the reference count of the given SV.
+All of the following SvREFCNT_inc* macros are optimized versions of
+SvREFCNT_inc, and can be replaced with SvREFCNT_inc.
+
SV* SvREFCNT_inc(SV* sv)
=for hackers
Found in file sv.h
+=item SvREFCNT_inc_NN
+X<SvREFCNT_inc_NN>
+
+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.
+
+ SV* SvREFCNT_inc_NN(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvREFCNT_inc_simple
+X<SvREFCNT_inc_simple>
+
+Same as SvREFCNT_inc, but can only be used with expressions without side
+effects. 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.
+
+ void SvREFCNT_inc_simple_void(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvREFCNT_inc_simple_void_NN
+X<SvREFCNT_inc_simple_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.
+
+ void SvREFCNT_inc_simple_void_NN(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.
+
+ void 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.
+
+ void 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)
+ U32 SvROK(SV* sv)
=for hackers
Found in file sv.h
=item SvSTASH_set
X<SvSTASH_set>
-Set the value of the STASH pointer in sv to val. See C<SvIV_set>.
+Set the value of the STASH pointer in sv to val. See C<SvIV_set>.
+
+ void SvSTASH_set(SV* sv, HV* val)
+
+=for hackers
+Found in file sv.h
+
+=item SvTAINT
+X<SvTAINT>
+
+Taints an SV if tainting is enabled.
+
+ void SvTAINT(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvTAINTED
+X<SvTAINTED>
+
+Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if
+not.
+
+ bool SvTAINTED(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvTAINTED_off
+X<SvTAINTED_off>
+
+Untaints an SV. Be I<very> careful with this routine, as it short-circuits
+some of Perl's fundamental security features. XS module authors should not
+use this function unless they fully understand all the implications of
+unconditionally untainting the value. Untainting should be done in the
+standard perl fashion, via a carefully crafted regexp, rather than directly
+untainting variables.
+
+ void SvTAINTED_off(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvTAINTED_on
+X<SvTAINTED_on>
+
+Marks an SV as tainted if tainting is enabled.
+
+ void SvTAINTED_on(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvTRUE
+X<SvTRUE>
+
+Returns a boolean indicating whether Perl would evaluate the SV as true or
+false, defined or undefined. Does not handle 'get' magic.
+
+ bool SvTRUE(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvTYPE
+X<SvTYPE>
+
+Returns the type of the SV. See C<svtype>.
+
+ svtype SvTYPE(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvUOK
+X<SvUOK>
+
+Returns a boolean indicating whether the SV contains an unsigned integer.
+
+ bool SvUOK(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvUPGRADE
+X<SvUPGRADE>
+
+Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to
+perform the upgrade if necessary. See C<svtype>.
+
+ void SvUPGRADE(SV* sv, svtype type)
+
+=for hackers
+Found in file sv.h
+
+=item SvUTF8
+X<SvUTF8>
+
+Returns a U32 value indicating whether the SV contains UTF-8 encoded data.
+Call this after SvPV() in case any call to string overloading updates the
+internal flag.
+
+ U32 SvUTF8(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvUTF8_off
+X<SvUTF8_off>
+
+Unsets the UTF-8 status of an SV.
+
+ void SvUTF8_off(SV *sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvUTF8_on
+X<SvUTF8_on>
+
+Turn on the UTF-8 status of an SV (the data is not changed, just the flag).
+Do not use frivolously.
+
+ void SvUTF8_on(SV *sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvUV
+X<SvUV>
+
+Coerces the given SV to an unsigned integer and returns it. See C<SvUVx>
+for a version which guarantees to evaluate sv only once.
+
+ UV SvUV(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvUVX
+X<SvUVX>
+
+Returns the raw value in the SV's UV slot, without checks or conversions.
+Only use when you are sure SvIOK is true. See also C<SvUV()>.
+
+ UV SvUVX(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvUVx
+X<SvUVx>
+
+Coerces the given SV to an unsigned integer and returns it. Guarantees to
+C<sv> only once. Only use this if C<sv> is an expression with side effects,
+otherwise use the more efficient C<SvUV>.
+
+ UV SvUVx(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvUV_nomg
+X<SvUV_nomg>
+
+Like C<SvUV> but doesn't process magic.
+
+ UV SvUV_nomg(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvUV_set
+X<SvUV_set>
+
+Set the value of the UV pointer in sv to val. See C<SvIV_set>.
+
+ void SvUV_set(SV* sv, UV val)
+
+=for hackers
+Found in file sv.h
+
+=item SvVOK
+X<SvVOK>
+
+Returns a boolean indicating whether the SV contains a v-string.
+
+ bool SvVOK(SV* 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
+I<at the C level>. To check derivation at the Perl level, call C<isa()> as a
+normal Perl method.
+
+ bool sv_derived_from(SV* sv, const char *const name)
+
+=for hackers
+Found in file universal.c
+
+=item sv_does
+X<sv_does>
+
+Returns a boolean indicating whether the SV performs a specific, named role.
+The SV can be a Perl object or the name of a Perl class.
+
+ bool sv_does(SV* sv, const char *const 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.
- void SvSTASH_set(SV* sv, STASH* val)
+ I32 looks_like_number(SV *const sv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvTAINT
-X<SvTAINT>
+=item newRV_noinc
+X<newRV_noinc>
-Taints an SV if tainting is enabled.
+Creates an RV wrapper for an SV. The reference count for the original
+SV is B<not> incremented.
- void SvTAINT(SV* sv)
+ SV* newRV_noinc(SV *const sv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvTAINTED
-X<SvTAINTED>
+=item newSV
+X<newSV>
-Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if
-not.
+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.
- bool SvTAINTED(SV* sv)
+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(const STRLEN len)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvTAINTED_off
-X<SvTAINTED_off>
+=item newSVhek
+X<newSVhek>
-Untaints an SV. Be I<very> careful with this routine, as it short-circuits
-some of Perl's fundamental security features. XS module authors should not
-use this function unless they fully understand all the implications of
-unconditionally untainting the value. Untainting should be done in the
-standard perl fashion, via a carefully crafted regexp, rather than directly
-untainting variables.
+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.
- void SvTAINTED_off(SV* sv)
+ SV* newSVhek(const HEK *const hek)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvTAINTED_on
-X<SvTAINTED_on>
+=item newSViv
+X<newSViv>
-Marks an SV as tainted if tainting is enabled.
+Creates a new SV and copies an integer into it. The reference count for the
+SV is set to 1.
- void SvTAINTED_on(SV* sv)
+ SV* newSViv(const IV i)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvTRUE
-X<SvTRUE>
+=item newSVnv
+X<newSVnv>
-Returns a boolean indicating whether Perl would evaluate the SV as true or
-false, defined or undefined. Does not handle 'get' magic.
+Creates a new SV and copies a floating point value into it.
+The reference count for the SV is set to 1.
- bool SvTRUE(SV* sv)
+ SV* newSVnv(const NV n)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvTYPE
-X<SvTYPE>
+=item newSVpv
+X<newSVpv>
-Returns the type of the SV. See C<svtype>.
+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.
- svtype SvTYPE(SV* sv)
+ SV* newSVpv(const char *const s, const STRLEN len)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvUOK
-X<SvUOK>
+=item newSVpvf
+X<newSVpvf>
-Returns a boolean indicating whether the SV contains an unsigned integer.
+Creates a new SV and initializes it with the string formatted like
+C<sprintf>.
- void SvUOK(SV* sv)
+ SV* newSVpvf(const char *const pat, ...)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvUPGRADE
-X<SvUPGRADE>
+=item newSVpvn
+X<newSVpvn>
-Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to
-perform the upgrade if necessary. See C<svtype>.
+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.
- void SvUPGRADE(SV* sv, svtype type)
+ SV* newSVpvn(const char *const s, const STRLEN len)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvUTF8
-X<SvUTF8>
+=item newSVpvn_flags
+X<newSVpvn_flags>
+
+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.
+Currently the only flag bits accepted are C<SVf_UTF8> and C<SVs_TEMP>.
+If C<SVs_TEMP> is set, then C<sv2mortal()> is called on the result before
+returning. If C<SVf_UTF8> is set, then it will be set on the new SV.
+C<newSVpvn_utf8()> is a convenience wrapper for this function, defined as
-Returns a boolean indicating whether the SV contains UTF-8 encoded data.
+ #define newSVpvn_utf8(s, len, u) \
+ newSVpvn_flags((s), (len), (u) ? SVf_UTF8 : 0)
- bool SvUTF8(SV* sv)
+ SV* newSVpvn_flags(const char *const s, const STRLEN len, const U32 flags)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvUTF8_off
-X<SvUTF8_off>
+=item newSVpvn_share
+X<newSVpvn_share>
-Unsets the UTF-8 status of an SV.
+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. If the C<hash> parameter is non-zero, that
+value is used; otherwise the hash is computed. The string's hash can be later
+be retrieved from the SV with the C<SvSHARED_HASH()> macro. 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.
- void SvUTF8_off(SV *sv)
+ SV* newSVpvn_share(const char* s, I32 len, U32 hash)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvUTF8_on
-X<SvUTF8_on>
+=item newSVpvs
+X<newSVpvs>
-Turn on the UTF-8 status of an SV (the data is not changed, just the flag).
-Do not use frivolously.
+Like C<newSVpvn>, but takes a literal string instead of a string/length pair.
- void SvUTF8_on(SV *sv)
+ SV* newSVpvs(const char* s)
=for hackers
-Found in file sv.h
+Found in file handy.h
-=item SvUV
-X<SvUV>
+=item newSVpvs_flags
+X<newSVpvs_flags>
-Coerces the given SV to an unsigned integer and returns it. See C<SvUVx>
-for a version which guarantees to evaluate sv only once.
+Like C<newSVpvn_flags>, but takes a literal string instead of a string/length
+pair.
- UV SvUV(SV* sv)
+ SV* newSVpvs_flags(const char* s, U32 flags)
=for hackers
-Found in file sv.h
+Found in file handy.h
-=item SvUVX
-X<SvUVX>
+=item newSVpvs_share
+X<newSVpvs_share>
-Returns the raw value in the SV's UV slot, without checks or conversions.
-Only use when you are sure SvIOK is true. See also C<SvUV()>.
+Like C<newSVpvn_share>, but takes a literal string instead of a string/length
+pair and omits the hash parameter.
- UV SvUVX(SV* sv)
+ SV* newSVpvs_share(const char* s)
=for hackers
-Found in file sv.h
+Found in file handy.h
-=item SvUVx
-X<SvUVx>
+=item newSVrv
+X<newSVrv>
-Coerces the given SV to an unsigned integer and returns it. Guarantees to
-evaluate sv only once. Use the more efficient C<SvUV> otherwise.
+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.
- UV SvUVx(SV* sv)
+ SV* newSVrv(SV *const rv, const char *const classname)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvUV_nomg
-X<SvUV_nomg>
+=item newSVsv
+X<newSVsv>
-Like C<SvUV> but doesn't process magic.
+Creates a new SV which is an exact duplicate of the original SV.
+(Uses C<sv_setsv>).
- UV SvUV_nomg(SV* sv)
+ SV* newSVsv(SV *const old)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvUV_set
-X<SvUV_set>
+=item newSVuv
+X<newSVuv>
-Set the value of the UV pointer in sv to val. See C<SvIV_set>.
+Creates a new SV and copies an unsigned integer into it.
+The reference count for the SV is set to 1.
- void SvUV_set(SV* sv, UV val)
+ SV* newSVuv(const UV u)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvVOK
-X<SvVOK>
+=item newSV_type
+X<newSV_type>
-Returns a boolean indicating whether the SV contains a v-string.
+Creates a new SV, of the type specified. The reference count for the new SV
+is set to 1.
- bool SvVOK(SV* sv)
+ SV* newSV_type(const svtype type)
=for hackers
-Found in file sv.h
+Found in file sv.c
=item sv_2bool
X<sv_2bool>
This function is only called on magical items, and is only used by
sv_true() or its macro equivalent.
- bool sv_2bool(SV* sv)
+ bool sv_2bool(SV *const sv)
=for hackers
Found in file sv.c
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)
+ CV* sv_2cv(SV* sv, HV **const st, GV **const gvp, const I32 lref)
=for hackers
Found in file sv.c
GV; or the recursive result if we're an RV; or the IO slot of the symbol
named after the PV if we're a string.
- IO* sv_2io(SV* sv)
+ IO* sv_2io(SV *const sv)
=for hackers
Found in file sv.c
conversion. If flags includes SV_GMAGIC, does an mg_get() first.
Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros.
- IV sv_2iv_flags(SV* sv, I32 flags)
+ IV sv_2iv_flags(SV *const sv, const I32 flags)
=for hackers
Found in file sv.c
string buffer can be "stolen" if this SV is copied. See also C<sv_newmortal>
and C<sv_mortalcopy>.
- SV* sv_2mortal(SV* sv)
+ SV* sv_2mortal(SV *const sv)
=for hackers
Found in file sv.c
conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)>
macros.
- NV sv_2nv(SV* sv)
+ NV sv_2nv(SV *const sv)
=for hackers
Found in file sv.c
Usually accessed via the C<SvPVbyte> macro.
- char* sv_2pvbyte(SV* sv, STRLEN* lp)
+ char* sv_2pvbyte(SV *const sv, STRLEN *const lp)
=for hackers
Found in file sv.c
Usually accessed via the C<SvPVutf8> macro.
- char* sv_2pvutf8(SV* sv, STRLEN* lp)
+ char* sv_2pvutf8(SV *const sv, STRLEN *const lp)
=for hackers
Found in file sv.c
Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg>
usually end up here too.
- char* sv_2pv_flags(SV* sv, STRLEN* lp, I32 flags)
+ char* sv_2pv_flags(SV *const sv, STRLEN *const lp, const I32 flags)
=for hackers
Found in file sv.c
conversion. If flags includes SV_GMAGIC, does an mg_get() first.
Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> macros.
- UV sv_2uv_flags(SV* sv, I32 flags)
+ UV sv_2uv_flags(SV *const sv, const I32 flags)
=for hackers
Found in file sv.c
Remove any string offset. You should normally use the C<SvOOK_off> macro
wrapper instead.
- int sv_backoff(SV* sv)
+ int sv_backoff(SV *const sv)
=for hackers
Found in file sv.c
must be designated by its stash (see C<gv_stashpv()>). The reference count
of the SV is unaffected.
- SV* sv_bless(SV* sv, HV* stash)
+ SV* sv_bless(SV *const sv, HV *const stash)
=for hackers
Found in file sv.c
If the SV has the UTF-8 status set, then the bytes appended should be
valid UTF-8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
- void sv_catpv(SV* sv, const char* ptr)
+ void sv_catpv(SV *const sv, const char* ptr)
=for hackers
Found in file sv.c
C<sv_catpvf_mg>. If the original SV was UTF-8, the pattern should be
valid UTF-8; if the original SV was bytes, the pattern should be too.
- void sv_catpvf(SV* sv, const char* pat, ...)
+ void sv_catpvf(SV *const sv, const char *const pat, ...)
=for hackers
Found in file sv.c
Like C<sv_catpvf>, but also handles 'set' magic.
- void sv_catpvf_mg(SV *sv, const char* pat, ...)
+ void sv_catpvf_mg(SV *const sv, const char *const pat, ...)
=for hackers
Found in file sv.c
status set, then the bytes appended should be valid UTF-8.
Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>.
- void sv_catpvn(SV* sv, const char* ptr, STRLEN len)
+ void sv_catpvn(SV *dsv, const char *sstr, STRLEN len)
=for hackers
Found in file sv.c
appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented
in terms of this function.
- void sv_catpvn_flags(SV* sv, const char* ptr, STRLEN len, I32 flags)
+ void sv_catpvn_flags(SV *const dstr, const char *sstr, const STRLEN len, const I32 flags)
=for hackers
Found in file sv.c
-=item sv_catpvn_nomg
-X<sv_catpvn_nomg>
+=item sv_catpvs
+X<sv_catpvs>
-Like C<sv_catpvn> but doesn't process magic.
+Like C<sv_catpvn>, but takes a literal string instead of a string/length pair.
- void sv_catpvn_nomg(SV* sv, const char* ptr, STRLEN len)
+ void sv_catpvs(SV* sv, const char* s)
=for hackers
-Found in file sv.h
+Found in file handy.h
=item sv_catpv_mg
X<sv_catpv_mg>
Like C<sv_catpv>, but also handles 'set' magic.
- void sv_catpv_mg(SV *sv, const char *ptr)
+ void sv_catpv_mg(SV *const sv, const char *const ptr)
=for hackers
Found in file sv.c
SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but
not 'set' magic. See C<sv_catsv_mg>.
- void sv_catsv(SV* dsv, SV* ssv)
+ void sv_catsv(SV *dstr, SV *sstr)
=for hackers
Found in file sv.c
bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv>
and C<sv_catsv_nomg> are implemented in terms of this function.
- void sv_catsv_flags(SV* dsv, SV* ssv, I32 flags)
+ void sv_catsv_flags(SV *const dsv, SV *const ssv, const I32 flags)
=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>
Beware: after this function returns, C<ptr> and SvPVX_const(sv) may no longer
refer to the same chunk of data.
- void sv_chop(SV* sv, const char* ptr)
+ void sv_chop(SV *const sv, const char *const ptr)
=for hackers
Found in file sv.c
you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>)
instead.
- void sv_clear(SV* sv)
+ void sv_clear(SV *const sv)
=for hackers
Found in file sv.c
C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will
coerce its args to strings if necessary. See also C<sv_cmp_locale>.
- I32 sv_cmp(SV* sv1, SV* sv2)
+ I32 sv_cmp(SV *const sv1, SV *const sv2)
=for hackers
Found in file sv.c
Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and
'use bytes' aware, handles get magic, and will coerce its args to strings
-if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>.
+if necessary. See also C<sv_cmp>.
- I32 sv_cmp_locale(SV* sv1, SV* sv2)
+ I32 sv_cmp_locale(SV *const sv1, SV *const sv2)
=for hackers
Found in file sv.c
memory comparison can be used to compare the data according to the locale
settings.
- char* sv_collxfrm(SV* sv, STRLEN* nxp)
+ char* sv_collxfrm(SV *const sv, STRLEN *const nxp)
=for hackers
Found in file sv.c
Copies a stringified representation of the source SV into the
destination SV. Automatically performs any necessary mg_get and
coercion of numeric values into strings. Guaranteed to preserve
-UTF-8 flag even from overloaded objects. Similar in nature to
+UTF8 flag even from overloaded objects. Similar in nature to
sv_2pv[_flags] but operates directly on an SV instead of just the
string. Mostly uses sv_2pv_flags to do its work, except when that
would lose the UTF-8'ness of the PV.
- void sv_copypv(SV* dsv, SV* ssv)
+ void sv_copypv(SV *const dsv, SV *const ssv)
=for hackers
Found in file sv.c
Auto-decrement of the value in the SV, doing string to numeric conversion
if necessary. Handles 'get' magic.
- void sv_dec(SV* sv)
+ void sv_dec(SV *const sv)
=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>
C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function
with flags set to 0.
- void sv_force_normal_flags(SV *sv, U32 flags)
+ void sv_force_normal_flags(SV *const sv, const U32 flags)
=for hackers
Found in file sv.c
the body; finally, deallocate the SV's head itself.
Normally called via a wrapper macro C<SvREFCNT_dec>.
- void sv_free(SV* sv)
+ void sv_free(SV *const sv)
=for hackers
Found in file sv.c
Get a line from the filehandle and store it into the SV, optionally
appending to the currently-stored string.
- char* sv_gets(SV* sv, PerlIO* fp, I32 append)
+ char* sv_gets(SV *const sv, PerlIO *const fp, I32 append)
=for hackers
Found in file sv.c
upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer.
Use the C<SvGROW> wrapper instead.
- char* sv_grow(SV* sv, STRLEN newlen)
+ char* sv_grow(SV *const sv, STRLEN newlen)
=for hackers
Found in file sv.c
Auto-increment of the value in the SV, doing string to numeric conversion
if necessary. Handles 'get' magic.
- void sv_inc(SV* sv)
+ void sv_inc(SV *const sv)
=for hackers
Found in file sv.c
X<sv_insert>
Inserts a string at the specified offset/length within the SV. Similar to
-the Perl substr() function.
+the Perl substr() function. Handles get magic.
+
+ void sv_insert(SV *const bigstr, const STRLEN offset, const STRLEN len, const char *const little, const STRLEN littlelen)
+
+=for hackers
+Found in file sv.c
+
+=item sv_insert_flags
+X<sv_insert_flags>
+
+Same as C<sv_insert>, but the extra C<flags> are passed the C<SvPV_force_flags> that applies to C<bigstr>.
- void sv_insert(SV* bigsv, STRLEN offset, STRLEN len, const char* little, STRLEN littlelen)
+ void sv_insert_flags(SV *const bigstr, const STRLEN offset, const STRLEN len, const char *const little, const STRLEN littlelen, const U32 flags)
=for hackers
Found in file sv.c
class. This does not check for subtypes; use C<sv_derived_from> to verify
an inheritance relationship.
- int sv_isa(SV* sv, const char* name)
+ int sv_isa(SV* sv, const char *const name)
=for hackers
Found in file sv.c
Returns the length of the string in the SV. Handles magic and type
coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot.
- STRLEN sv_len(SV* sv)
+ STRLEN sv_len(SV *const sv)
=for hackers
Found in file sv.c
Returns the number of characters in the string in an SV, counting wide
UTF-8 bytes as a single character. Handles magic and type coercion.
- STRLEN sv_len_utf8(SV* sv)
+ STRLEN sv_len_utf8(SV *const sv)
=for hackers
Found in file sv.c
You need to use C<sv_magicext> to add magic to SvREADONLY SVs and also
to add more than one instance of the same 'how'.
- void sv_magic(SV* sv, SV* obj, int how, const char* name, I32 namlen)
+ void sv_magic(SV *const sv, SV *const obj, const int how, const char *const name, const I32 namlen)
=for hackers
Found in file sv.c
(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 *const sv, SV *const obj, const int how, const MGVTBL *const vtbl, const char *const name, const I32 namlen)
=for hackers
Found in file sv.c
explicit call to FREETMPS, or by an implicit call at places such as
statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>.
- SV* sv_mortalcopy(SV* oldsv)
+ SV* sv_mortalcopy(SV *const oldsv)
=for hackers
Found in file sv.c
Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper
instead.
- SV* sv_newref(SV* sv)
+ SV* sv_newref(SV *const sv)
=for hackers
Found in file sv.c
start of the string, to a count of the equivalent number of UTF-8 chars.
Handles magic and type coercion.
- void sv_pos_b2u(SV* sv, I32* offsetp)
+ void sv_pos_b2u(SV *const sv, I32 *const offsetp)
=for hackers
Found in file sv.c
the offset, rather than from the start of the string. Handles magic and
type coercion.
- void sv_pos_u2b(SV* sv, I32* offsetp, I32* lenp)
+ void sv_pos_u2b(SV *const sv, I32 *const offsetp, I32 *const lenp)
=for hackers
Found in file sv.c
The backend for the C<SvPVbytex_force> macro. Always use the macro instead.
- char* sv_pvbyten_force(SV* sv, STRLEN* lp)
+ char* sv_pvbyten_force(SV *const sv, STRLEN *const lp)
=for hackers
Found in file sv.c
You normally want to use the various wrapper macros instead: see
C<SvPV_force> and C<SvPV_force_nomg>
- char* sv_pvn_force_flags(SV* sv, STRLEN* lp, I32 flags)
+ char* sv_pvn_force_flags(SV *const sv, STRLEN *const lp, const I32 flags)
=for hackers
Found in file sv.c
The backend for the C<SvPVutf8x_force> macro. Always use the macro instead.
- char* sv_pvutf8n_force(SV* sv, STRLEN* lp)
+ char* sv_pvutf8n_force(SV *const sv, STRLEN *const lp)
=for hackers
Found in file sv.c
Returns a string describing what the SV is a reference to.
- char* sv_reftype(const SV* sv, int ob)
+ const char* sv_reftype(const SV *const sv, const int ob)
=for hackers
Found in file sv.c
Note that this is a rather specialist SV copying operation; most of the
time you'll want to use C<sv_setsv> or one of its many macro front-ends.
- void sv_replace(SV* sv, SV* nsv)
-
-=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()
+ void sv_replace(SV *const sv, SV *const nsv)
=for hackers
Found in file sv.c
Underlying implementation for the C<reset> Perl function.
Note that the perl-level function is vaguely deprecated.
- void sv_reset(const char* s, HV* stash)
+ void sv_reset(const char* s, HV *const stash)
=for hackers
Found in file sv.c
Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the
referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and
push a back-reference to this RV onto the array of backreferences
-associated with that magic.
+associated with that magic. If the RV is magical, set magic will be
+called after the RV is cleared.
- SV* sv_rvweaken(SV *sv)
+ SV* sv_rvweaken(SV *const sv)
=for hackers
Found in file sv.c
Copies an integer into the given SV, upgrading first if necessary.
Does not handle 'set' magic. See also C<sv_setiv_mg>.
- void sv_setiv(SV* sv, IV num)
+ void sv_setiv(SV *const sv, const IV num)
=for hackers
Found in file sv.c
Like C<sv_setiv>, but also handles 'set' magic.
- void sv_setiv_mg(SV *sv, IV i)
+ void sv_setiv_mg(SV *const sv, const IV i)
=for hackers
Found in file sv.c
Copies a double into the given SV, upgrading first if necessary.
Does not handle 'set' magic. See also C<sv_setnv_mg>.
- void sv_setnv(SV* sv, NV num)
+ void sv_setnv(SV *const sv, const NV num)
=for hackers
Found in file sv.c
Like C<sv_setnv>, but also handles 'set' magic.
- void sv_setnv_mg(SV *sv, NV num)
+ void sv_setnv_mg(SV *const sv, const NV num)
=for hackers
Found in file sv.c
Copies a string into an SV. The string must be null-terminated. Does not
handle 'set' magic. See C<sv_setpv_mg>.
- void sv_setpv(SV* sv, const char* ptr)
+ void sv_setpv(SV *const sv, const char *const ptr)
=for hackers
Found in file sv.c
Works like C<sv_catpvf> but copies the text into the SV instead of
appending it. Does not handle 'set' magic. See C<sv_setpvf_mg>.
- void sv_setpvf(SV* sv, const char* pat, ...)
+ void sv_setpvf(SV *const sv, const char *const pat, ...)
=for hackers
Found in file sv.c
Like C<sv_setpvf>, but also handles 'set' magic.
- void sv_setpvf_mg(SV *sv, const char* pat, ...)
+ void sv_setpvf_mg(SV *const sv, const char *const pat, ...)
=for hackers
Found in file sv.c
Copies an integer into the given SV, also updating its string value.
Does not handle 'set' magic. See C<sv_setpviv_mg>.
- void sv_setpviv(SV* sv, IV num)
+ void sv_setpviv(SV *const sv, const IV num)
=for hackers
Found in file sv.c
Like C<sv_setpviv>, but also handles 'set' magic.
- void sv_setpviv_mg(SV *sv, IV iv)
+ void sv_setpviv_mg(SV *const sv, const IV iv)
=for hackers
Found in file sv.c
bytes to be copied. If the C<ptr> argument is NULL the SV will become
undefined. Does not handle 'set' magic. See C<sv_setpvn_mg>.
- void sv_setpvn(SV* sv, const char* ptr, STRLEN len)
+ void sv_setpvn(SV *const sv, const char *const ptr, const STRLEN len)
=for hackers
Found in file sv.c
Like C<sv_setpvn>, but also handles 'set' magic.
- void sv_setpvn_mg(SV *sv, const char *ptr, STRLEN len)
+ void sv_setpvn_mg(SV *const sv, const char *const ptr, const STRLEN len)
=for hackers
Found in file sv.c
+=item sv_setpvs
+X<sv_setpvs>
+
+Like C<sv_setpvn>, but takes a literal string instead of a string/length pair.
+
+ void sv_setpvs(SV* sv, const char* s)
+
+=for hackers
+Found in file handy.h
+
=item sv_setpv_mg
X<sv_setpv_mg>
Like C<sv_setpv>, but also handles 'set' magic.
- void sv_setpv_mg(SV *sv, const char *ptr)
+ void sv_setpv_mg(SV *const sv, const char *const ptr)
=for hackers
Found in file sv.c
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)
+ SV* sv_setref_iv(SV *const rv, const char *const classname, const IV iv)
=for hackers
Found in file sv.c
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)
+ SV* sv_setref_nv(SV *const rv, const char *const classname, const NV nv)
=for hackers
Found in file sv.c
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
Note that C<sv_setref_pvn> copies the string while this copies the pointer.
- SV* sv_setref_pv(SV* rv, const char* classname, void* pv)
+ SV* sv_setref_pv(SV *const rv, const char *const classname, void *const pv)
=for hackers
Found in file sv.c
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.
- SV* sv_setref_pvn(SV* rv, const char* classname, const char* pv, STRLEN n)
+ SV* sv_setref_pvn(SV *const rv, const char *const classname, const char *const pv, const STRLEN n)
=for hackers
Found in file sv.c
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)
+ SV* sv_setref_uv(SV *const rv, const char *const classname, const UV uv)
=for hackers
Found in file sv.c
C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and
C<SvSetMagicSV_nosteal>.
- void sv_setsv(SV* dsv, SV* ssv)
+ void sv_setsv(SV *dstr, SV *sstr)
=for hackers
Found in file sv.c
This is the primary function for copying scalars, and most other
copy-ish functions and macros use this underneath.
- void sv_setsv_flags(SV* dsv, SV* ssv, I32 flags)
+ void sv_setsv_flags(SV *dstr, SV *sstr, const I32 flags)
=for hackers
Found in file sv.c
Like C<sv_setsv>, but also handles 'set' magic.
- void sv_setsv_mg(SV *dstr, SV *sstr)
+ void sv_setsv_mg(SV *const dstr, SV *const sstr)
=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>
Copies an unsigned integer into the given SV, upgrading first if necessary.
Does not handle 'set' magic. See also C<sv_setuv_mg>.
- void sv_setuv(SV* sv, UV num)
+ void sv_setuv(SV *const sv, const UV num)
=for hackers
Found in file sv.c
Like C<sv_setuv>, but also handles 'set' magic.
- void sv_setuv_mg(SV *sv, UV u)
+ void sv_setuv_mg(SV *const sv, const UV u)
=for hackers
Found in file sv.c
X<sv_tainted>
Test an SV for taintedness. Use C<SvTAINTED> instead.
- bool sv_tainted(SV* sv)
+ bool sv_tainted(SV *const sv)
=for hackers
Found in file sv.c
Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may
instead use an in-line version.
- I32 sv_true(SV *sv)
+ I32 sv_true(SV *const sv)
=for hackers
Found in file sv.c
Removes all magic of type C<type> from an SV.
- int sv_unmagic(SV* sv, int type)
+ int sv_unmagic(SV *const sv, const int type)
=for hackers
Found in file sv.c
different from one or the reference being a readonly SV).
See C<SvROK_off>.
- void sv_unref_flags(SV* sv, U32 flags)
+ void sv_unref_flags(SV *const ref, const U32 flags)
=for hackers
Found in file sv.c
X<sv_untaint>
Untaint an SV. Use C<SvTAINTED_off> instead.
- void sv_untaint(SV* sv)
+ void sv_untaint(SV *const sv)
=for hackers
Found in file sv.c
SV, then copies across as much information as possible from the old body.
You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>.
- void sv_upgrade(SV* sv, U32 mt)
+ void sv_upgrade(SV *const sv, svtype new_type)
=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 *const sv, char* ptr, const STRLEN len, const U32 flags)
=for hackers
Found in file sv.c
NOTE: this function is experimental and may change or be
removed without notice.
- bool sv_utf8_decode(SV *sv)
+ bool sv_utf8_decode(SV *const sv)
=for hackers
Found in file sv.c
NOTE: this function is experimental and may change or be
removed without notice.
- bool sv_utf8_downgrade(SV *sv, bool fail_ok)
+ bool sv_utf8_downgrade(SV *const sv, const bool fail_ok)
=for hackers
Found in file sv.c
Converts the PV of an SV to UTF-8, but then turns the C<SvUTF8>
flag off so that it looks like octets again.
- void sv_utf8_encode(SV *sv)
+ void sv_utf8_encode(SV *const sv)
=for hackers
Found in file sv.c
This is not as a general purpose byte encoding to Unicode interface:
use the Encode extension for that.
- STRLEN sv_utf8_upgrade_flags(SV *sv, I32 flags)
+ STRLEN sv_utf8_upgrade_flags(SV *const sv, const I32 flags)
=for hackers
Found in file sv.c
Usually used via its frontend C<sv_catpvf>.
- void sv_vcatpvf(SV* sv, const char* pat, va_list* args)
+ void sv_vcatpvf(SV *const sv, const char *const pat, va_list *const args)
=for hackers
Found in file sv.c
Usually used via one of its frontends C<sv_vcatpvf> and C<sv_vcatpvf_mg>.
- void sv_vcatpvfn(SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *maybe_tainted)
+ void sv_vcatpvfn(SV *const sv, const char *const pat, const STRLEN patlen, va_list *const args, SV **const svargs, const I32 svmax, bool *const maybe_tainted)
=for hackers
Found in file sv.c
Usually used via its frontend C<sv_catpvf_mg>.
- void sv_vcatpvf_mg(SV* sv, const char* pat, va_list* args)
+ void sv_vcatpvf_mg(SV *const sv, const char *const pat, va_list *const args)
=for hackers
Found in file sv.c
Usually used via its frontend C<sv_setpvf>.
- void sv_vsetpvf(SV* sv, const char* pat, va_list* args)
+ void sv_vsetpvf(SV *const sv, const char *const pat, va_list *const args)
=for hackers
Found in file sv.c
Usually used via one of its frontends C<sv_vsetpvf> and C<sv_vsetpvf_mg>.
- void sv_vsetpvfn(SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *maybe_tainted)
+ void sv_vsetpvfn(SV *const sv, const char *const pat, const STRLEN patlen, va_list *const args, SV **const svargs, const I32 svmax, bool *const maybe_tainted)
=for hackers
Found in file sv.c
Usually used via its frontend C<sv_setpvf_mg>.
- void sv_vsetpvf_mg(SV* sv, const char* pat, va_list* args)
+ void sv_vsetpvf_mg(SV *const sv, const char *const pat, va_list *const args)
=for hackers
Found in file sv.c
instead of upper/lowercasing both the characters, see
http://www.unicode.org/unicode/reports/tr21/ (Case Mappings).
- I32 ibcmp_utf8(const char* a, char **pe1, UV l1, bool u1, const char* b, char **pe2, UV l2, bool u2)
+ I32 ibcmp_utf8(const char *s1, char **pe1, UV l1, bool u1, const char *s2, char **pe2, UV l2, bool u2)
=for hackers
Found in file utf8.c
UTF-8 character. The actual number of bytes in the UTF-8 character
will be returned if it is valid, otherwise 0.
- STRLEN is_utf8_char(const U8 *p)
+ STRLEN is_utf8_char(const U8 *s)
=for hackers
Found in file utf8.c
X<utf8n_to_uvuni>
Bottom level UTF-8 decode routine.
-Returns the unicode code point value of the first character in the string C<s>
+Returns the Unicode code point value of the first character in the string C<s>
which is assumed to be in UTF-8 encoding and no longer than C<curlen>;
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, ...)
perlguts(1), perlxs(1), perlxstut(1), perlintern(1)
+=cut
+
+ ex: set ro:
https://perl5.git.perl.org / perl5.git / blobdiff