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perlapi (1)
>> perlapi (1) ( Solaris man: Команды и прикладные программы пользовательского уровня )
perlapi (1) ( Разные man: Команды и прикладные программы пользовательского уровня )
NAME
perlapi - autogenerated documentation for the perl public
API
DESCRIPTION
This file contains the documentation of the perl public API
generated by embed.pl, specifically a listing of functions,
macros, flags, and variables that may be used by extension
writers. The interfaces of any functions that are not
listed here are subject to change without notice. For this
reason, blindly using functions listed in proto.h is to be
avoided when writing extensions.
Note that all Perl API global variables must be referenced
with the `PL_' prefix. Some macros are provided for
compatibility with the older, unadorned names, but this
support may be disabled in a future release.
The listing is alphabetical, case insensitive.
AvFILL Same as `av_len()'. Deprecated, use `av_len()'
instead.
int AvFILL(AV* av)
av_clear
Clears an array, making it empty. Does not free the
memory used by the array itself.
void av_clear(AV* ar)
av_extend
Pre-extend an array. The `key' is the index to
which the array should be extended.
void av_extend(AV* ar, I32 key)
av_fetch
Returns the SV at the specified index in the array.
The `key' is the index. If `lval' is set then the
fetch will be part of a store. Check that the
return value is non-null before dereferencing it to
a `SV*'.
See the Understanding the Magic of Tied Hashes and
Arrays entry in the perlguts manpage for more
information on how to use this function on tied
arrays.
SV** av_fetch(AV* ar, I32 key, I32 lval)
av_len Returns the highest index in the array. Returns -1
if the array is empty.
I32 av_len(AV* ar)
av_make Creates a new AV and populates it with a list of
SVs. The SVs are copied 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_pop Pops an SV off the end of the array. Returns
`&PL_sv_undef' if the array is empty.
SV* av_pop(AV* ar)
av_push 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)
av_shift
Shifts an SV off the beginning of the array.
SV* av_shift(AV* ar)
av_store
Stores an SV in an array. The array index is
specified as `key'. The return value will be NULL
if the operation failed or if the value did not need
to be actually stored within the array (as in the
case of tied arrays). Otherwise it can be
dereferenced to get the original `SV*'. Note that
the caller is responsible for suitably incrementing
the reference count of `val' before the call, and
decrementing it if the function returned NULL.
See the Understanding the Magic of Tied Hashes and
Arrays entry in the perlguts manpage for more
information on how to use this function on tied
arrays.
SV** av_store(AV* ar, I32 key, SV* val)
av_undef
Undefines the array. Frees the memory used by the
array itself.
void av_undef(AV* ar)
av_unshift
Unshift the given number of `undef' values onto the
beginning of the array. The array will grow
automatically to accommodate the addition. You must
then use `av_store' to assign values to these new
elements.
void av_unshift(AV* ar, I32 num)
call_argv
Performs a callback to the specified Perl sub. See
the perlcall manpage.
NOTE: the perl_ form of this function is deprecated.
I32 call_argv(const char* sub_name, I32 flags, char** argv)
call_method
Performs a callback to the specified Perl method.
The blessed object must be on the stack. See the
perlcall manpage.
NOTE: the perl_ form of this function is deprecated.
I32 call_method(const char* methname, I32 flags)
call_pv Performs a callback to the specified Perl sub. See
the perlcall manpage.
NOTE: the perl_ form of this function is deprecated.
I32 call_pv(const char* sub_name, I32 flags)
call_sv Performs a callback to the Perl sub whose name is in
the SV. See the perlcall manpage.
NOTE: the perl_ form of this function is deprecated.
I32 call_sv(SV* sv, I32 flags)
CLASS Variable which is setup by `xsubpp' to indicate the
class name for a C++ XS constructor. This is always
a `char*'. See `THIS'.
char* CLASS
Copy The XSUB-writer's interface to the C `memcpy'
function. The `src' is the source, `dest' is the
destination, `nitems' is the number of items, and
`type' is the type. May fail on overlapping copies.
See also `Move'.
void Copy(void* src, void* dest, int nitems, type)
croak This is the XSUB-writer's interface to Perl's `die'
function. Use this function the same way you use
the C `printf' function. See `warn'.
void croak(const char* pat, ...)
CvSTASH Returns the stash of the CV.
HV* CvSTASH(CV* cv)
dMARK Declare a stack marker variable, `mark', for the
XSUB. See `MARK' and `dORIGMARK'.
dMARK;
dORIGMARK
Saves the original stack mark for the XSUB. See
`ORIGMARK'.
dORIGMARK;
dSP Declares a local copy of perl's stack pointer for
the XSUB, available via the `SP' macro. See `SP'.
dSP;
dXSARGS Sets up stack and mark pointers for an XSUB, calling
dSP and dMARK. This is usually handled
automatically by `xsubpp'. Declares the `items'
variable to indicate the number of items on the
stack.
dXSARGS;
dXSI32 Sets up the `ix' variable for an XSUB which has
aliases. This is usually handled automatically by
`xsubpp'.
dXSI32;
ENTER Opening bracket on a callback. See `LEAVE' and the
perlcall manpage.
ENTER;
eval_pv Tells Perl to `eval' the given string and return an
SV* result.
NOTE: the perl_ form of this function is deprecated.
SV* eval_pv(const char* p, I32 croak_on_error)
eval_sv Tells Perl to `eval' the string in the SV.
NOTE: the perl_ form of this function is deprecated.
I32 eval_sv(SV* sv, I32 flags)
EXTEND Used to extend the argument stack for an XSUB's
return values. Once used, guarrantees that there is
room for at least `nitems' to be pushed onto the
stack.
void EXTEND(SP, int nitems)
fbm_compile
Analyses the string in order to make fast searches
on it using fbm_instr() -- the Boyer-Moore
algorithm.
void fbm_compile(SV* sv, U32 flags)
fbm_instr
Returns the location of the SV in the string
delimited by `str' and `strend'. It returns
`Nullch' if the string can't be found. The `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)
FREETMPS
Closing bracket for temporaries on a callback. See
`SAVETMPS' and the perlcall manpage.
FREETMPS;
get_av Returns the AV of the specified Perl array. If
`create' is set and the Perl variable does not exist
then it will be created. If `create' is not set and
the variable does not exist then NULL is returned.
NOTE: the perl_ form of this function is deprecated.
AV* get_av(const char* name, I32 create)
get_cv Returns the CV of the specified Perl subroutine. If
`create' is set and the Perl subroutine does not
exist then it will be declared (which has the same
effect as saying `sub name;'). If `create' 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)
get_hv Returns the HV of the specified Perl hash. If
`create' is set and the Perl variable does not exist
then it will be created. If `create' is not set and
the variable does not exist then NULL is returned.
NOTE: the perl_ form of this function is deprecated.
HV* get_hv(const char* name, I32 create)
get_sv Returns the SV of the specified Perl scalar. If
`create' is set and the Perl variable does not exist
then it will be created. If `create' is not set and
the variable does not exist then NULL is returned.
NOTE: the perl_ form of this function is deprecated.
SV* get_sv(const char* name, I32 create)
GIMME A backward-compatible version of `GIMME_V' which can
only return `G_SCALAR' or `G_ARRAY'; in a void
context, it returns `G_SCALAR'. Deprecated. Use
`GIMME_V' instead.
U32 GIMME
GIMME_V The XSUB-writer's equivalent to Perl's `wantarray'.
Returns `G_VOID', `G_SCALAR' or `G_ARRAY' for void,
scalar or array context, respectively.
U32 GIMME_V
GvSV Return the SV from the GV.
SV* GvSV(GV* gv)
gv_fetchmeth
Returns the glob with the given `name' and a defined
subroutine or `NULL'. The glob lives in the given
`stash', or in the stashes accessible via @ISA and
@UNIVERSAL.
The argument `level' should be either 0 or -1. If
`level==0', as a side-effect creates a glob with the
given `name' in the given `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.
This function grants `"SUPER"' token as a postfix of
the stash name. The GV returned from `gv_fetchmeth'
may be a method cache entry, which is not visible to
Perl code. So when calling `call_sv', you should
not use the GV directly; instead, you should use the
method's CV, which can be obtained from the GV with
the `GvCV' macro.
GV* gv_fetchmeth(HV* stash, const char* name, STRLEN len, I32 level)
gv_fetchmethod
See the gv_fetchmethod_autoload manpage.
GV* gv_fetchmethod(HV* stash, const char* name)
gv_fetchmethod_autoload
Returns the glob which contains the subroutine to
call to invoke the method on the `stash'. In fact
in the presence of autoloading this may be the glob
for "AUTOLOAD". In this case the corresponding
variable $AUTOLOAD is already setup.
The third parameter of `gv_fetchmethod_autoload'
determines whether AUTOLOAD lookup is performed if
the given method is not present: non-zero means yes,
look for AUTOLOAD; zero means no, don't look for
AUTOLOAD. Calling `gv_fetchmethod' is equivalent to
calling `gv_fetchmethod_autoload' with a non-zero
`autoload' parameter.
These functions grant `"SUPER"' token as a prefix of
the method name. Note that if you want to keep the
returned glob for a long time, you need to check for
it being "AUTOLOAD", since at the later time the
call may load a different subroutine due to
$AUTOLOAD changing its value. Use the glob created
via a side effect to do this.
These functions have the same side-effects and as
`gv_fetchmeth' with `level==0'. `name' should be
writable if contains `':'' or `' '''. The warning
against passing the GV returned by `gv_fetchmeth' to
`call_sv' apply equally to these functions.
GV* gv_fetchmethod_autoload(HV* stash, const char* name, I32 autoload)
gv_stashpv
Returns a pointer to the stash for a specified
package. `name' should be a valid UTF-8 string. If
`create' is set then the package will be created if
it does not already exist. If `create' is not set
and the package does not exist then NULL is
returned.
HV* gv_stashpv(const char* name, I32 create)
gv_stashsv
Returns a pointer to the stash for a specified
package, which must be a valid UTF-8 string. See
`gv_stashpv'.
HV* gv_stashsv(SV* sv, I32 create)
G_ARRAY Used to indicate array context. See `GIMME_V',
`GIMME' and the perlcall manpage.
G_DISCARD
Indicates that arguments returned from a callback
should be discarded. See the perlcall manpage.
G_EVAL Used to force a Perl `eval' wrapper around a
callback. See the perlcall manpage.
G_NOARGS
Indicates that no arguments are being sent to a
callback. See the perlcall manpage.
G_SCALAR
Used to indicate scalar context. See `GIMME_V',
`GIMME', and the perlcall manpage.
G_VOID Used to indicate void context. See `GIMME_V' and
the perlcall manpage.
HEf_SVKEY
This flag, used in the length slot of hash entries
and magic structures, specifies the structure
contains a `SV*' pointer where a `char*' pointer is
to be expected. (For information only--not to be
used).
HeHASH Returns the computed hash stored in the hash entry.
U32 HeHASH(HE* he)
HeKEY Returns the actual pointer stored in the key slot of
the hash entry. The pointer may be either `char*' or
`SV*', depending on the value of `HeKLEN()'. Can be
assigned to. The `HePV()' or `HeSVKEY()' macros are
usually preferable for finding the value of a key.
void* HeKEY(HE* he)
HeKLEN If this is negative, and amounts to `HEf_SVKEY', it
indicates the entry holds an `SV*' key. Otherwise,
holds the actual length of the key. Can be assigned
to. The `HePV()' macro is usually preferable for
finding key lengths.
STRLEN HeKLEN(HE* he)
HePV Returns the key slot of the hash entry as a `char*'
value, doing any necessary dereferencing of possibly
`SV*' keys. The length of the string is placed in
`len' (this is a macro, so do not use `&len'). If
you do not care about what the length of the key is,
you may use the global variable `PL_na', though this
is rather less efficient than using a local
variable. Remember though, that hash keys in perl
are free to contain embedded nulls, so using
`strlen()' or similar is not a good way to find the
length of hash keys. This is very similar to the
`SvPV()' macro described elsewhere in this document.
char* HePV(HE* he, STRLEN len)
HeSVKEY Returns the key as an `SV*', or `Nullsv' if the hash
entry does not contain an `SV*' key.
SV* HeSVKEY(HE* he)
HeSVKEY_force
Returns the key as an `SV*'. Will create and return
a temporary mortal `SV*' if the hash entry contains
only a `char*' key.
SV* HeSVKEY_force(HE* he)
HeSVKEY_set
Sets the key to a given `SV*', taking care to set
the appropriate flags to indicate the presence of an
`SV*' key, and returns the same `SV*'.
SV* HeSVKEY_set(HE* he, SV* sv)
HeVAL Returns the value slot (type `SV*') stored in the
hash entry.
SV* HeVAL(HE* he)
HvNAME Returns the package name of a stash. See `SvSTASH',
`CvSTASH'.
char* HvNAME(HV* stash)
hv_clear
Clears a hash, making it empty.
void hv_clear(HV* tb)
hv_delete
Deletes a key/value pair in the hash. The value SV
is removed from the hash and returned to the caller.
The `klen' is the length of the key. The `flags'
value will normally be zero; if set to G_DISCARD
then NULL will be returned.
SV* hv_delete(HV* tb, const char* key, U32 klen, I32 flags)
hv_delete_ent
Deletes a key/value pair in the hash. The value SV
is removed from the hash and returned to the caller.
The `flags' value will normally be zero; if set to
G_DISCARD then NULL will be returned. `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)
hv_exists
Returns a boolean indicating whether the specified
hash key exists. The `klen' is the length of the
key.
bool hv_exists(HV* tb, const char* key, U32 klen)
hv_exists_ent
Returns a boolean indicating whether the specified
hash key exists. `hash' 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)
hv_fetch
Returns the SV which corresponds to the specified
key in the hash. The `klen' is the length of the
key. If `lval' is set then the fetch will be part
of a store. Check that the return value is non-null
before dereferencing it to a `SV*'.
See the Understanding the Magic of Tied Hashes and
Arrays entry in the perlguts manpage for more
information on how to use this function on tied
hashes.
SV** hv_fetch(HV* tb, const char* key, U32 klen, I32 lval)
hv_fetch_ent
Returns the hash entry which corresponds to the
specified key in the hash. `hash' must be a valid
precomputed hash number for the given `key', or 0 if
you want the function to compute it. IF `lval' is
set then the fetch will be part of a store. Make
sure the return value is non-null before accessing
it. The return value when `tb' is a tied hash is a
pointer to a static location, so be sure to make a
copy of the structure if you need to store it
somewhere.
See the Understanding the Magic of Tied Hashes and
Arrays entry in the perlguts manpage for more
information on how to use this function on tied
hashes.
HE* hv_fetch_ent(HV* tb, SV* key, I32 lval, U32 hash)
hv_iterinit
Prepares a starting point to traverse a hash table.
Returns the number of keys in the hash (i.e. the
same as `HvKEYS(tb)'). The return value is
currently only meaningful for hashes without tie
magic.
NOTE: Before version 5.004_65, `hv_iterinit' used to
return the number of hash buckets that happen to be
in use. If you still need that esoteric value, you
can get it through the macro `HvFILL(tb)'.
I32 hv_iterinit(HV* tb)
hv_iterkey
Returns the key from the current position of the
hash iterator. See `hv_iterinit'.
char* hv_iterkey(HE* entry, I32* retlen)
hv_iterkeysv
Returns the key as an `SV*' from the current
position of the hash iterator. The return value
will always be a mortal copy of the key. Also see
`hv_iterinit'.
SV* hv_iterkeysv(HE* entry)
hv_iternext
Returns entries from a hash iterator. See
`hv_iterinit'.
HE* hv_iternext(HV* tb)
hv_iternextsv
Performs an `hv_iternext', `hv_iterkey', and
`hv_iterval' in one operation.
SV* hv_iternextsv(HV* hv, char** key, I32* retlen)
hv_iterval
Returns the value from the current position of the
hash iterator. See `hv_iterkey'.
SV* hv_iterval(HV* tb, HE* entry)
hv_magic
Adds magic to a hash. See `sv_magic'.
void hv_magic(HV* hv, GV* gv, int how)
hv_store
Stores an SV in a hash. The hash key is specified
as `key' and `klen' is the length of the key. The
`hash' parameter is the precomputed hash value; if
it is zero then Perl will compute it. The return
value will be NULL if the operation failed or if the
value did not need to be actually stored within the
hash (as in the case of tied hashes). Otherwise it
can be dereferenced to get the original `SV*'. Note
that the caller is responsible for suitably
incrementing the reference count of `val' before the
call, and decrementing it if the function returned
NULL.
See the Understanding the Magic of Tied Hashes and
Arrays entry in the perlguts manpage for more
information on how to use this function on tied
hashes.
SV** hv_store(HV* tb, const char* key, U32 klen, SV* val, U32 hash)
hv_store_ent
Stores `val' in a hash. The hash key is specified
as `key'. The `hash' parameter is the precomputed
hash value; if it is zero then Perl will compute it.
The return value is the new hash entry so created.
It will be NULL if the operation failed or if the
value did not need to be actually stored within the
hash (as in the case of tied hashes). Otherwise the
contents of the return value can be accessed using
the `He???' macros described here. Note that the
caller is responsible for suitably incrementing the
reference count of `val' before the call, and
decrementing it if the function returned NULL.
See the Understanding the Magic of Tied Hashes and
Arrays entry in the perlguts manpage for more
information on how to use this function on tied
hashes.
HE* hv_store_ent(HV* tb, SV* key, SV* val, U32 hash)
hv_undef
Undefines the hash.
void hv_undef(HV* tb)
isALNUM Returns a boolean indicating whether the C `char' is
an ascii alphanumeric character or digit.
bool isALNUM(char ch)
isALPHA Returns a boolean indicating whether the C `char' is
an ascii alphabetic character.
bool isALPHA(char ch)
isDIGIT Returns a boolean indicating whether the C `char' is
an ascii digit.
bool isDIGIT(char ch)
isLOWER Returns a boolean indicating whether the C `char' is
a lowercase character.
bool isLOWER(char ch)
isSPACE Returns a boolean indicating whether the C `char' is
whitespace.
bool isSPACE(char ch)
isUPPER Returns a boolean indicating whether the C `char' is
an uppercase character.
bool isUPPER(char ch)
items Variable which is setup by `xsubpp' to indicate the
number of items on the stack. See the Variable-
length Parameter Lists entry in the perlxs manpage.
I32 items
ix Variable which is setup by `xsubpp' to indicate
which of an XSUB's aliases was used to invoke it.
See the The ALIAS: Keyword entry in the perlxs
manpage.
I32 ix
LEAVE Closing bracket on a callback. See `ENTER' and the
perlcall manpage.
LEAVE;
looks_like_number
Test if an the content of an SV looks like a number
(or is a number).
I32 looks_like_number(SV* sv)
MARK Stack marker variable for the XSUB. See `dMARK'.
mg_clear
Clear something magical that the SV represents. See
`sv_magic'.
int mg_clear(SV* sv)
mg_copy Copies the magic from one SV to another. See
`sv_magic'.
int mg_copy(SV* sv, SV* nsv, const char* key, I32 klen)
mg_find Finds the magic pointer for type matching the SV.
See `sv_magic'.
MAGIC* mg_find(SV* sv, int type)
mg_free Free any magic storage used by the SV. See
`sv_magic'.
int mg_free(SV* sv)
mg_get Do magic after a value is retrieved from the SV.
See `sv_magic'.
int mg_get(SV* sv)
mg_length
Report on the SV's length. See `sv_magic'.
U32 mg_length(SV* sv)
mg_magical
Turns on the magical status of an SV. See
`sv_magic'.
void mg_magical(SV* sv)
mg_set Do magic after a value is assigned to the SV. See
`sv_magic'.
int mg_set(SV* sv)
Move The XSUB-writer's interface to the C `memmove'
function. The `src' is the source, `dest' is the
destination, `nitems' is the number of items, and
`type' is the type. Can do overlapping moves. See
also `Copy'.
void Move(void* src, void* dest, int nitems, type)
New The XSUB-writer's interface to the C `malloc'
function.
void New(int id, void* ptr, int nitems, type)
newAV Creates a new AV. The reference count is set to 1.
AV* newAV()
Newc The XSUB-writer's interface to the C `malloc'
function, with cast.
void Newc(int id, void* ptr, int nitems, type, cast)
newCONSTSUB
Creates a constant sub equivalent to Perl `sub FOO
() { 123 }' which is eligible for inlining at
compile-time.
void newCONSTSUB(HV* stash, char* name, SV* sv)
newHV Creates a new HV. The reference count is set to 1.
HV* newHV()
newRV_inc
Creates an RV wrapper for an SV. The reference
count for the original SV is incremented.
SV* newRV_inc(SV* sv)
newRV_noinc
Creates an RV wrapper for an SV. The reference
count for the original SV is not incremented.
SV* newRV_noinc(SV *sv)
NEWSV Creates a new SV. A non-zero `len' parameter
indicates the number of bytes of preallocated string
space the SV should have. An extra byte for a
tailing NUL is also reserved. (SvPOK is not set for
the SV even if string space is allocated.) The
reference count for the new SV is set to 1. `id' is
an integer id between 0 and 1299 (used to identify
leaks).
SV* NEWSV(int id, STRLEN len)
newSViv Creates a new SV and copies an integer into it. The
reference count for the SV is set to 1.
SV* newSViv(IV i)
newSVnv Creates a new SV and copies a floating point value
into it. The reference count for the SV is set to
1.
SV* newSVnv(NV n)
newSVpv Creates a new SV and copies a string into it. The
reference count for the SV is set to 1. If `len' is
zero, Perl will compute the length using strlen().
For efficiency, consider using `newSVpvn' instead.
SV* newSVpv(const char* s, STRLEN len)
newSVpvf
Creates a new SV an initialize it with the string
formatted like `sprintf'.
SV* newSVpvf(const char* pat, ...)
newSVpvn
Creates a new SV and copies a string into it. The
reference count for the SV is set to 1. Note that
if `len' is zero, Perl will create a zero length
string. You are responsible for ensuring that the
source string is at least `len' bytes long.
SV* newSVpvn(const char* s, STRLEN len)
newSVrv Creates a new SV for the RV, `rv', to point to. If
`rv' is not an RV then it will be upgraded to one.
If `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)
newSVsv Creates a new SV which is an exact duplicate of the
original SV.
SV* newSVsv(SV* old)
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)
newXS Used by `xsubpp' to hook up XSUBs as Perl subs.
newXSproto
Used by `xsubpp' to hook up XSUBs as Perl subs.
Adds Perl prototypes to the subs.
Newz The XSUB-writer's interface to the C `malloc'
function. The allocated memory is zeroed with
`memzero'.
void Newz(int id, void* ptr, int nitems, type)
Nullav Null AV pointer.
Nullch Null character pointer.
Nullcv Null CV pointer.
Nullhv Null HV pointer.
Nullsv Null SV pointer.
ORIGMARK
The original stack mark for the XSUB. See
`dORIGMARK'.
perl_alloc
Allocates a new Perl interpreter. See the perlembed
manpage.
PerlInterpreter* perl_alloc()
perl_construct
Initializes a new Perl interpreter. See the
perlembed manpage.
void perl_construct(PerlInterpreter* interp)
perl_destruct
Shuts down a Perl interpreter. See the perlembed
manpage.
void perl_destruct(PerlInterpreter* interp)
perl_free
Releases a Perl interpreter. See the perlembed
manpage.
void perl_free(PerlInterpreter* interp)
perl_parse
Tells a Perl interpreter to parse a Perl script.
See the perlembed manpage.
int perl_parse(PerlInterpreter* interp, XSINIT_t xsinit, int argc, char** argv, char** env)
perl_run
Tells a Perl interpreter to run. See the perlembed
manpage.
int perl_run(PerlInterpreter* interp)
PL_DBsingle
When Perl is run in debugging mode, with the -d
switch, this SV is a boolean which indicates whether
subs are being single-stepped. Single-stepping is
automatically turned on after every step. This is
the C variable which corresponds to Perl's
$DB::single variable. See `PL_DBsub'.
SV * PL_DBsingle
PL_DBsub
When Perl is run in debugging mode, with the -d
switch, this GV contains the SV which holds the name
of the sub being debugged. This is the C variable
which corresponds to Perl's $DB::sub variable. See
`PL_DBsingle'.
GV * PL_DBsub
PL_DBtrace
Trace variable used when Perl is run in debugging
mode, with the -d switch. This is the C variable
which corresponds to Perl's $DB::trace variable.
See `PL_DBsingle'.
SV * PL_DBtrace
PL_dowarn
The C variable which corresponds to Perl's $^W
warning variable.
bool PL_dowarn
PL_modglobal
`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
PL_na A convenience variable which is typically used with
`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 `SvPV_nolen' macro.
STRLEN PL_na
PL_sv_no
This is the `false' SV. See `PL_sv_yes'. Always
refer to this as `&PL_sv_no'.
SV PL_sv_no
PL_sv_undef
This is the `undef' SV. Always refer to this as
`&PL_sv_undef'.
SV PL_sv_undef
PL_sv_yes
This is the `true' SV. See `PL_sv_no'. Always
refer to this as `&PL_sv_yes'.
SV PL_sv_yes
POPi Pops an integer off the stack.
IV POPi
POPl Pops a long off the stack.
long POPl
POPn Pops a double off the stack.
NV POPn
POPp Pops a string off the stack.
char* POPp
POPs Pops an SV off the stack.
SV* POPs
PUSHi Push an integer onto the stack. The stack must have
room for this element. Handles 'set' magic. See
`XPUSHi'.
void PUSHi(IV iv)
PUSHMARK
Opening bracket for arguments on a callback. See
`PUTBACK' and the perlcall manpage.
PUSHMARK;
PUSHn Push a double onto the stack. The stack must have
room for this element. Handles 'set' magic. See
`XPUSHn'.
void PUSHn(NV nv)
PUSHp Push a string onto the stack. The stack must have
room for this element. The `len' indicates the
length of the string. Handles 'set' magic. See
`XPUSHp'.
void PUSHp(char* str, STRLEN len)
PUSHs Push an SV onto the stack. The stack must have room
for this element. Does not handle 'set' magic. See
`XPUSHs'.
void PUSHs(SV* sv)
PUSHu Push an unsigned integer onto the stack. The stack
must have room for this element. See `XPUSHu'.
void PUSHu(UV uv)
PUTBACK Closing bracket for XSUB arguments. This is usually
handled by `xsubpp'. See `PUSHMARK' and the
perlcall manpage for other uses.
PUTBACK;
Renew The XSUB-writer's interface to the C `realloc'
function.
void Renew(void* ptr, int nitems, type)
Renewc The XSUB-writer's interface to the C `realloc'
function, with cast.
void Renewc(void* ptr, int nitems, type, cast)
require_pv
Tells Perl to `require' a module.
NOTE: the perl_ form of this function is deprecated.
void require_pv(const char* pv)
RETVAL Variable which is setup by `xsubpp' to hold the
return value for an XSUB. This is always the proper
type for the XSUB. See the The RETVAL Variable entry
in the perlxs manpage.
(whatever) RETVAL
Safefree
The XSUB-writer's interface to the C `free'
function.
void Safefree(void* src, void* dest, int nitems, type)
savepv Copy a string to a safe spot. This does not use an
SV.
char* savepv(const char* sv)
savepvn Copy a string to a safe spot. The `len' indicates
number of bytes to copy. This does not use an SV.
char* savepvn(const char* sv, I32 len)
SAVETMPS
Opening bracket for temporaries on a callback. See
`FREETMPS' and the perlcall manpage.
SAVETMPS;
SP Stack pointer. This is usually handled by `xsubpp'.
See `dSP' and `SPAGAIN'.
SPAGAIN Refetch the stack pointer. Used after a callback.
See the perlcall manpage.
SPAGAIN;
ST Used to access elements on the XSUB's stack.
SV* ST(int ix)
strEQ Test two strings to see if they are equal. Returns
true or false.
bool strEQ(char* s1, char* s2)
strGE Test two strings to see if the first, `s1', is
greater than or equal to the second, `s2'. Returns
true or false.
bool strGE(char* s1, char* s2)
strGT Test two strings to see if the first, `s1', is
greater than the second, `s2'. Returns true or
false.
bool strGT(char* s1, char* s2)
strLE Test two strings to see if the first, `s1', is less
than or equal to the second, `s2'. Returns true or
false.
bool strLE(char* s1, char* s2)
strLT Test two strings to see if the first, `s1', is less
than the second, `s2'. Returns true or false.
bool strLT(char* s1, char* s2)
strNE Test two strings to see if they are different.
Returns true or false.
bool strNE(char* s1, char* s2)
strnEQ Test two strings to see if they are equal. The
`len' parameter indicates the number of bytes to
compare. Returns true or false. (A wrapper for
`strncmp').
bool strnEQ(char* s1, char* s2, STRLEN len)
strnNE Test two strings to see if they are different. The
`len' parameter indicates the number of bytes to
compare. Returns true or false. (A wrapper for
`strncmp').
bool strnNE(char* s1, char* s2, STRLEN len)
StructCopy
This is an architecture-independant macro to copy
one structure to another.
void StructCopy(type src, type dest, type)
SvCUR Returns the length of the string which is in the SV.
See `SvLEN'.
STRLEN SvCUR(SV* sv)
SvCUR_set
Set the length of the string which is in the SV.
See `SvCUR'.
void SvCUR_set(SV* sv, STRLEN len)
SvEND Returns a pointer to the last character in the
string which is in the SV. See `SvCUR'. Access the
character as *(SvEND(sv)).
char* SvEND(SV* sv)
SvGETMAGIC
Invokes `mg_get' on an SV if it has 'get' magic.
This macro evaluates its argument more than once.
void SvGETMAGIC(SV* sv)
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 `sv_grow' to perform the
expansion if necessary. Returns a pointer to the
character buffer.
void SvGROW(SV* sv, STRLEN len)
SvIOK Returns a boolean indicating whether the SV contains
an integer.
bool SvIOK(SV* sv)
SvIOKp Returns a boolean indicating whether the SV contains
an integer. Checks the private setting. Use
`SvIOK'.
bool SvIOKp(SV* sv)
SvIOK_off
Unsets the IV status of an SV.
void SvIOK_off(SV* sv)
SvIOK_on
Tells an SV that it is an integer.
void SvIOK_on(SV* sv)
SvIOK_only
Tells an SV that it is an integer and disables all
other OK bits.
void SvIOK_only(SV* sv)
SvIV Coerces the given SV to an integer and returns it.
IV SvIV(SV* sv)
SvIVX Returns the integer which is stored in the SV,
assuming SvIOK is true.
IV SvIVX(SV* sv)
SvLEN Returns the size of the string buffer in the SV.
See `SvCUR'.
STRLEN SvLEN(SV* sv)
SvNIOK Returns a boolean indicating whether the SV contains
a number, integer or double.
bool SvNIOK(SV* sv)
SvNIOKp Returns a boolean indicating whether the SV contains
a number, integer or double. Checks the private
setting. Use `SvNIOK'.
bool SvNIOKp(SV* sv)
SvNIOK_off
Unsets the NV/IV status of an SV.
void SvNIOK_off(SV* sv)
SvNOK Returns a boolean indicating whether the SV contains
a double.
bool SvNOK(SV* sv)
SvNOKp Returns a boolean indicating whether the SV contains
a double. Checks the private setting. Use `SvNOK'.
bool SvNOKp(SV* sv)
SvNOK_off
Unsets the NV status of an SV.
void SvNOK_off(SV* sv)
SvNOK_on
Tells an SV that it is a double.
void SvNOK_on(SV* sv)
SvNOK_only
Tells an SV that it is a double and disables all
other OK bits.
void SvNOK_only(SV* sv)
SvNV Coerce the given SV to a double and return it.
NV SvNV(SV* sv)
SvNVX Returns the double which is stored in the SV,
assuming SvNOK is true.
NV SvNVX(SV* sv)
SvOK Returns a boolean indicating whether the value is an
SV.
bool SvOK(SV* sv)
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).
bool SvOOK(SV* sv)
SvPOK Returns a boolean indicating whether the SV contains
a character string.
bool SvPOK(SV* sv)
SvPOKp Returns a boolean indicating whether the SV contains
a character string. Checks the private setting.
Use `SvPOK'.
bool SvPOKp(SV* sv)
SvPOK_off
Unsets the PV status of an SV.
void SvPOK_off(SV* sv)
SvPOK_on
Tells an SV that it is a string.
void SvPOK_on(SV* sv)
SvPOK_only
Tells an SV that it is a string and disables all
other OK bits.
void SvPOK_only(SV* sv)
SvPV Returns a pointer to the string in the SV, or a
stringified form of the SV if the SV does not
contain a string. Handles 'get' magic.
char* SvPV(SV* sv, STRLEN len)
SvPVX Returns a pointer to the string in the SV. The SV
must contain a string.
char* SvPVX(SV* sv)
SvPV_force
Like <SvPV> but will force the SV into becoming a
string (SvPOK). You want force if you are going to
update the SvPVX directly.
char* SvPV_force(SV* sv, STRLEN len)
SvPV_nolen
Returns a pointer to the string in the SV, or a
stringified form of the SV if the SV does not
contain a string. Handles 'get' magic.
char* SvPV_nolen(SV* sv)
SvREFCNT
Returns the value of the object's reference count.
U32 SvREFCNT(SV* sv)
SvREFCNT_dec
Decrements the reference count of the given SV.
void SvREFCNT_dec(SV* sv)
SvREFCNT_inc
Increments the reference count of the given SV.
SV* SvREFCNT_inc(SV* sv)
SvROK Tests if the SV is an RV.
bool SvROK(SV* sv)
SvROK_off
Unsets the RV status of an SV.
void SvROK_off(SV* sv)
SvROK_on
Tells an SV that it is an RV.
void SvROK_on(SV* sv)
SvRV Dereferences an RV to return the SV.
SV* SvRV(SV* sv)
SvSETMAGIC
Invokes `mg_set' on an SV if it has 'set' magic.
This macro evaluates its argument more than once.
void SvSETMAGIC(SV* sv)
SvSetSV Calls `sv_setsv' if dsv is not the same as ssv. May
evaluate arguments more than once.
void SvSetSV(SV* dsb, SV* ssv)
SvSetSV_nosteal
Calls a non-destructive version of `sv_setsv' if dsv
is not the same as ssv. May evaluate arguments more
than once.
void SvSetSV_nosteal(SV* dsv, SV* ssv)
SvSTASH Returns the stash of the SV.
HV* SvSTASH(SV* sv)
SvTAINT Taints an SV if tainting is enabled
void SvTAINT(SV* sv)
SvTAINTED
Checks to see if an SV is tainted. Returns TRUE if
it is, FALSE if not.
bool SvTAINTED(SV* sv)
SvTAINTED_off
Untaints an SV. Be 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)
SvTAINTED_on
Marks an SV as tainted.
void SvTAINTED_on(SV* sv)
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)
SvTYPE Returns the type of the SV. See `svtype'.
svtype SvTYPE(SV* sv)
svtype An enum of flags for Perl types. These are found in
the file sv.h in the `svtype' enum. Test these
flags with the `SvTYPE' macro.
SVt_IV Integer type flag for scalars. See `svtype'.
SVt_NV Double type flag for scalars. See `svtype'.
SVt_PV Pointer type flag for scalars. See `svtype'.
SVt_PVAV
Type flag for arrays. See `svtype'.
SVt_PVCV
Type flag for code refs. See `svtype'.
SVt_PVHV
Type flag for hashes. See `svtype'.
SVt_PVMG
Type flag for blessed scalars. See `svtype'.
SvUPGRADE
Used to upgrade an SV to a more complex form. Uses
`sv_upgrade' to perform the upgrade if necessary.
See `svtype'.
void SvUPGRADE(SV* sv, svtype type)
SvUV Coerces the given SV to an unsigned integer and
returns it.
UV SvUV(SV* sv)
SvUVX Returns the unsigned integer which is stored in the
SV, assuming SvIOK is true.
UV SvUVX(SV* sv)
sv_2mortal
Marks an SV as mortal. The SV will be destroyed
when the current context ends.
SV* sv_2mortal(SV* sv)
sv_bless
Blesses an SV into a specified package. The SV must
be an RV. The package must be designated by its
stash (see `gv_stashpv()'). The reference count of
the SV is unaffected.
SV* sv_bless(SV* sv, HV* stash)
sv_catpv
Concatenates the string onto the end of the string
which is in the SV. Handles 'get' magic, but not
'set' magic. See `sv_catpv_mg'.
void sv_catpv(SV* sv, const char* ptr)
sv_catpvf
Processes its arguments like `sprintf' and appends
the formatted output to an SV. Handles 'get' magic,
but not 'set' magic. `SvSETMAGIC()' must typically
be called after calling this function to handle
'set' magic.
void sv_catpvf(SV* sv, const char* pat, ...)
sv_catpvf_mg
Like `sv_catpvf', but also handles 'set' magic.
void sv_catpvf_mg(SV *sv, const char* pat, ...)
sv_catpvn
Concatenates the string onto the end of the string
which is in the SV. The `len' indicates number of
bytes to copy. Handles 'get' magic, but not 'set'
magic. See `sv_catpvn_mg'.
void sv_catpvn(SV* sv, const char* ptr, STRLEN len)
sv_catpvn_mg
Like `sv_catpvn', but also handles 'set' magic.
void sv_catpvn_mg(SV *sv, const char *ptr, STRLEN len)
sv_catpv_mg
Like `sv_catpv', but also handles 'set' magic.
void sv_catpv_mg(SV *sv, const char *ptr)
sv_catsv
Concatenates the string from SV `ssv' onto the end
of the string in SV `dsv'. Handles 'get' magic, but
not 'set' magic. See `sv_catsv_mg'.
void sv_catsv(SV* dsv, SV* ssv)
sv_catsv_mg
Like `sv_catsv', but also handles 'set' magic.
void sv_catsv_mg(SV *dstr, SV *sstr)
sv_chop Efficient removal of characters from the beginning
of the string buffer. SvPOK(sv) must be true and the
`ptr' must be a pointer to somewhere inside the
string buffer. The `ptr' becomes the first
character of the adjusted string.
void sv_chop(SV* sv, char* ptr)
sv_cmp Compares the strings in two SVs. Returns -1, 0, or
1 indicating whether the string in `sv1' is less
than, equal to, or greater than the string in `sv2'.
I32 sv_cmp(SV* sv1, SV* sv2)
sv_dec Auto-decrement of the value in the SV.
void sv_dec(SV* sv)
sv_derived_from
Returns a boolean indicating whether the SV is
derived from the specified class. This is the
function that implements `UNIVERSAL::isa'. It works
for class names as well as for objects.
bool sv_derived_from(SV* sv, const char* name)
sv_eq Returns a boolean indicating whether the strings in
the two SVs are identical.
I32 sv_eq(SV* sv1, SV* sv2)
sv_grow Expands the character buffer in the SV. This will
use `sv_unref' and will upgrade the SV to `SVt_PV'.
Returns a pointer to the character buffer. Use
`SvGROW'.
char* sv_grow(SV* sv, STRLEN newlen)
sv_inc Auto-increment of the value in the SV.
void sv_inc(SV* sv)
sv_insert
Inserts a string at the specified offset/length
within the SV. Similar to the Perl substr()
function.
void sv_insert(SV* bigsv, STRLEN offset, STRLEN len, char* little, STRLEN littlelen)
sv_isa Returns a boolean indicating whether the SV is
blessed into the specified class. This does not
check for subtypes; use `sv_derived_from' to verify
an inheritance relationship.
int sv_isa(SV* sv, const char* name)
sv_isobject
Returns a boolean indicating whether the SV is an RV
pointing to a blessed object. If the SV is not an
RV, or if the object is not blessed, then this will
return false.
int sv_isobject(SV* sv)
sv_len Returns the length of the string in the SV. See
also `SvCUR'.
STRLEN sv_len(SV* sv)
sv_magic
Adds magic to an SV.
void sv_magic(SV* sv, SV* obj, int how, const char* name, I32 namlen)
sv_mortalcopy
Creates a new SV which is a copy of the original SV.
The new SV is marked as mortal.
SV* sv_mortalcopy(SV* oldsv)
sv_newmortal
Creates a new SV which is mortal. The reference
count of the SV is set to 1.
SV* sv_newmortal()
sv_setiv
Copies an integer into the given SV. Does not
handle 'set' magic. See `sv_setiv_mg'.
void sv_setiv(SV* sv, IV num)
sv_setiv_mg
Like `sv_setiv', but also handles 'set' magic.
void sv_setiv_mg(SV *sv, IV i)
sv_setnv
Copies a double into the given SV. Does not handle
'set' magic. See `sv_setnv_mg'.
void sv_setnv(SV* sv, NV num)
sv_setnv_mg
Like `sv_setnv', but also handles 'set' magic.
void sv_setnv_mg(SV *sv, NV num)
sv_setpv
Copies a string into an SV. The string must be
null-terminated. Does not handle 'set' magic. See
`sv_setpv_mg'.
void sv_setpv(SV* sv, const char* ptr)
sv_setpvf
Processes its arguments like `sprintf' and sets an
SV to the formatted output. Does not handle 'set'
magic. See `sv_setpvf_mg'.
void sv_setpvf(SV* sv, const char* pat, ...)
sv_setpvf_mg
Like `sv_setpvf', but also handles 'set' magic.
void sv_setpvf_mg(SV *sv, const char* pat, ...)
sv_setpviv
Copies an integer into the given SV, also updating
its string value. Does not handle 'set' magic. See
`sv_setpviv_mg'.
void sv_setpviv(SV* sv, IV num)
sv_setpviv_mg
Like `sv_setpviv', but also handles 'set' magic.
void sv_setpviv_mg(SV *sv, IV iv)
sv_setpvn
Copies a string into an SV. The `len' parameter
indicates the number of bytes to be copied. Does
not handle 'set' magic. See `sv_setpvn_mg'.
void sv_setpvn(SV* sv, const char* ptr, STRLEN len)
sv_setpvn_mg
Like `sv_setpvn', but also handles 'set' magic.
void sv_setpvn_mg(SV *sv, const char *ptr, STRLEN len)
sv_setpv_mg
Like `sv_setpv', but also handles 'set' magic.
void sv_setpv_mg(SV *sv, const char *ptr)
sv_setref_iv
Copies an integer into a new SV, optionally blessing
the SV. The `rv' argument will be upgraded to an
RV. That RV will be modified to point to the new
SV. The `classname' argument indicates the package
for the blessing. Set `classname' to `Nullch' to
avoid the blessing. The new SV will be returned and
will have a reference count of 1.
SV* sv_setref_iv(SV* rv, const char* classname, IV iv)
sv_setref_nv
Copies a double into a new SV, optionally blessing
the SV. The `rv' argument will be upgraded to an
RV. That RV will be modified to point to the new
SV. The `classname' argument indicates the package
for the blessing. Set `classname' to `Nullch' to
avoid the blessing. The new SV will be returned and
will have a reference count of 1.
SV* sv_setref_nv(SV* rv, const char* classname, NV nv)
sv_setref_pv
Copies a pointer into a new SV, optionally blessing
the SV. The `rv' argument will be upgraded to an
RV. That RV will be modified to point to the new
SV. If the `pv' argument is NULL then `PL_sv_undef'
will be placed into the SV. The `classname'
argument indicates the package for the blessing.
Set `classname' to `Nullch' to avoid the blessing.
The new SV will be returned and will have a
reference count of 1.
Do not use with other Perl types such as HV, AV, SV,
CV, because those objects will become corrupted by
the pointer copy process.
Note that `sv_setref_pvn' copies the string while
this copies the pointer.
SV* sv_setref_pv(SV* rv, const char* classname, void* pv)
sv_setref_pvn
Copies a string into a new SV, optionally blessing
the SV. The length of the string must be specified
with `n'. The `rv' argument will be upgraded to an
RV. That RV will be modified to point to the new
SV. The `classname' argument indicates the package
for the blessing. Set `classname' to `Nullch' to
avoid the blessing. The new SV will be returned and
will have a reference count of 1.
Note that `sv_setref_pv' copies the pointer while
this copies the string.
SV* sv_setref_pvn(SV* rv, const char* classname, char* pv, STRLEN n)
sv_setsv
Copies the contents of the source SV `ssv' into the
destination SV `dsv'. The source SV may be
destroyed if it is mortal. Does not handle 'set'
magic. See the macro forms `SvSetSV',
`SvSetSV_nosteal' and `sv_setsv_mg'.
void sv_setsv(SV* dsv, SV* ssv)
sv_setsv_mg
Like `sv_setsv', but also handles 'set' magic.
void sv_setsv_mg(SV *dstr, SV *sstr)
sv_setuv
Copies an unsigned integer into the given SV. Does
not handle 'set' magic. See `sv_setuv_mg'.
void sv_setuv(SV* sv, UV num)
sv_setuv_mg
Like `sv_setuv', but also handles 'set' magic.
void sv_setuv_mg(SV *sv, UV u)
sv_unref
Unsets the RV status of the SV, and decrements the
reference count of whatever was being referenced by
the RV. This can almost be thought of as a reversal
of `newSVrv'. See `SvROK_off'.
void sv_unref(SV* sv)
sv_upgrade
Upgrade an SV to a more complex form. Use
`SvUPGRADE'. See `svtype'.
bool sv_upgrade(SV* sv, U32 mt)
sv_usepvn
Tells an SV to use `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 `ptr' should point to memory that was allocated
by `malloc'. The string length, `len', must be
supplied. This function will realloc the memory
pointed to by `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
`sv_usepvn_mg'.
void sv_usepvn(SV* sv, char* ptr, STRLEN len)
sv_usepvn_mg
Like `sv_usepvn', but also handles 'set' magic.
void sv_usepvn_mg(SV *sv, char *ptr, STRLEN len)
sv_vcatpvfn
Processes its arguments like `vsprintf' and appends
the formatted output to an SV. Uses an array of SVs
if the C style variable argument list is missing
(NULL). When running with taint checks enabled,
indicates via `maybe_tainted' if results are
untrustworthy (often due to the use of locales).
void sv_vcatpvfn(SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *maybe_tainted)
sv_vsetpvfn
Works like `vcatpvfn' but copies the text into the
SV instead of appending it.
void sv_vsetpvfn(SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *maybe_tainted)
THIS Variable which is setup by `xsubpp' to designate the
object in a C++ XSUB. This is always the proper
type for the C++ object. See `CLASS' and the Using
XS With C++ entry in the perlxs manpage.
(whatever) THIS
toLOWER Converts the specified character to lowercase.
char toLOWER(char ch)
toUPPER Converts the specified character to uppercase.
char toUPPER(char ch)
warn This is the XSUB-writer's interface to Perl's `warn'
function. Use this function the same way you use
the C `printf' function. See `croak'.
void warn(const char* pat, ...)
XPUSHi Push an integer onto the stack, extending the stack
if necessary. Handles 'set' magic. See `PUSHi'.
void XPUSHi(IV iv)
XPUSHn Push a double onto the stack, extending the stack if
necessary. Handles 'set' magic. See `PUSHn'.
void XPUSHn(NV nv)
XPUSHp Push a string onto the stack, extending the stack if
necessary. The `len' indicates the length of the
string. Handles 'set' magic. See `PUSHp'.
void XPUSHp(char* str, STRLEN len)
XPUSHs Push an SV onto the stack, extending the stack if
necessary. Does not handle 'set' magic. See
`PUSHs'.
void XPUSHs(SV* sv)
XPUSHu Push an unsigned integer onto the stack, extending
the stack if necessary. See `PUSHu'.
void XPUSHu(UV uv)
XS Macro to declare an XSUB and its C parameter list.
This is handled by `xsubpp'.
XSRETURN
Return from XSUB, indicating number of items on the
stack. This is usually handled by `xsubpp'.
void XSRETURN(int nitems)
XSRETURN_EMPTY
Return an empty list from an XSUB immediately.
XSRETURN_EMPTY;
XSRETURN_IV
Return an integer from an XSUB immediately. Uses
`XST_mIV'.
void XSRETURN_IV(IV iv)
XSRETURN_NO
Return `&PL_sv_no' from an XSUB immediately. Uses
`XST_mNO'.
XSRETURN_NO;
XSRETURN_NV
Return an double from an XSUB immediately. Uses
`XST_mNV'.
void XSRETURN_NV(NV nv)
XSRETURN_PV
Return a copy of a string from an XSUB immediately.
Uses `XST_mPV'.
void XSRETURN_PV(char* str)
XSRETURN_UNDEF
Return `&PL_sv_undef' from an XSUB immediately.
Uses `XST_mUNDEF'.
XSRETURN_UNDEF;
XSRETURN_YES
Return `&PL_sv_yes' from an XSUB immediately. Uses
`XST_mYES'.
XSRETURN_YES;
XST_mIV Place an integer into the specified position `pos'
on the stack. The value is stored in a new mortal
SV.
void XST_mIV(int pos, IV iv)
XST_mNO Place `&PL_sv_no' into the specified position `pos'
on the stack.
void XST_mNO(int pos)
XST_mNV Place a double into the specified position `pos' on
the stack. The value is stored in a new mortal SV.
void XST_mNV(int pos, NV nv)
XST_mPV Place a copy of a string into the specified position
`pos' on the stack. The value is stored in a new
mortal SV.
void XST_mPV(int pos, char* str)
XST_mUNDEF
Place `&PL_sv_undef' into the specified position
`pos' on the stack.
void XST_mUNDEF(int pos)
XST_mYES
Place `&PL_sv_yes' into the specified position `pos'
on the stack.
void XST_mYES(int pos)
XS_VERSION
The version identifier for an XS module. This is
usually handled automatically by
`ExtUtils::MakeMaker'. See `XS_VERSION_BOOTCHECK'.
XS_VERSION_BOOTCHECK
Macro to verify that a PM module's $VERSION variable
matches the XS module's `XS_VERSION' variable. This
is usually handled automatically by `xsubpp'. See
the The VERSIONCHECK: Keyword entry in the perlxs
manpage.
XS_VERSION_BOOTCHECK;
Zero The XSUB-writer's interface to the C `memzero'
function. The `dest' is the destination, `nitems'
is the number of items, and `type' is the type.
void Zero(void* dest, int nitems, type)
AUTHORS
Until May 1997, this document was maintained by Jeff Okamoto
<okamoto@corp.hp.com>. It is now maintained as part of Perl
itself.
With lots of help and suggestions from Dean Roehrich,
Malcolm Beattie, Andreas Koenig, Paul Hudson, Ilya
Zakharevich, Paul Marquess, Neil Bowers, Matthew Green, Tim
Bunce, Spider Boardman, Ulrich Pfeifer, Stephen McCamant,
and Gurusamy Sarathy.
API Listing originally by Dean Roehrich <roehrich@cray.com>.
Updated to be autogenerated from comments in the source by
Benjamin Stuhl.