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1/* XSUB.h
2 *
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3 * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, by Larry Wall and others
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5 *
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
8 *
9 */
10
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11#ifndef _INC_PERL_XSUB_H
12#define _INC_PERL_XSUB_H 1
13
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14/* first, some documentation for xsubpp-generated items */
15
16/*
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17=head1 Variables created by C<xsubpp> and C<xsubpp> internal functions
18
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19=for apidoc Amn|char*|CLASS
20Variable which is setup by C<xsubpp> to indicate the
21class name for a C++ XS constructor. This is always a C<char*>. See C<THIS>.
22
23=for apidoc Amn|(whatever)|RETVAL
24Variable which is setup by C<xsubpp> to hold the return value for an
25XSUB. This is always the proper type for the XSUB. See
26L<perlxs/"The RETVAL Variable">.
27
28=for apidoc Amn|(whatever)|THIS
29Variable which is setup by C<xsubpp> to designate the object in a C++
30XSUB. This is always the proper type for the C++ object. See C<CLASS> and
31L<perlxs/"Using XS With C++">.
32
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33=for apidoc Amn|I32|ax
34Variable which is setup by C<xsubpp> to indicate the stack base offset,
35used by the C<ST>, C<XSprePUSH> and C<XSRETURN> macros. The C<dMARK> macro
36must be called prior to setup the C<MARK> variable.
37
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38=for apidoc Amn|I32|items
39Variable which is setup by C<xsubpp> to indicate the number of
40items on the stack. See L<perlxs/"Variable-length Parameter Lists">.
41
42=for apidoc Amn|I32|ix
43Variable which is setup by C<xsubpp> to indicate which of an
44XSUB's aliases was used to invoke it. See L<perlxs/"The ALIAS: Keyword">.
45
46=for apidoc Am|SV*|ST|int ix
47Used to access elements on the XSUB's stack.
48
49=for apidoc AmU||XS
50Macro to declare an XSUB and its C parameter list. This is handled by
51C<xsubpp>.
52
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53=for apidoc Ams||dAX
54Sets up the C<ax> variable.
55This is usually handled automatically by C<xsubpp> by calling C<dXSARGS>.
56
57=for apidoc Ams||dITEMS
58Sets up the C<items> variable.
59This is usually handled automatically by C<xsubpp> by calling C<dXSARGS>.
60
954c1994 61=for apidoc Ams||dXSARGS
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62Sets up stack and mark pointers for an XSUB, calling dSP and dMARK.
63Sets up the C<ax> and C<items> variables by calling C<dAX> and C<dITEMS>.
64This is usually handled automatically by C<xsubpp>.
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65
66=for apidoc Ams||dXSI32
67Sets up the C<ix> variable for an XSUB which has aliases. This is usually
68handled automatically by C<xsubpp>.
69
70=cut
71*/
72
3280af22 73#define ST(off) PL_stack_base[ax + (off)]
a0d0e21e 74
d308986b 75#if defined(__CYGWIN__) && defined(USE_DYNAMIC_LOADING)
acfe0abc 76# define XS(name) __declspec(dllexport) void name(pTHX_ CV* cv)
cea2e8a9 77#else
acfe0abc 78# define XS(name) void name(pTHX_ CV* cv)
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79#endif
80
349b520e 81#define dAX I32 ax = MARK - PL_stack_base + 1
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82
83#define dITEMS I32 items = SP - MARK
84
a0d0e21e 85#define dXSARGS \
3c78fafa 86 dSP; dMARK; \
9f2ea798 87 dAX; dITEMS
a0d0e21e 88
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89#define dXSTARG SV * targ = ((PL_op->op_private & OPpENTERSUB_HASTARG) \
90 ? PAD_SV(PL_op->op_targ) : sv_newmortal())
91
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92/* Should be used before final PUSHi etc. if not in PPCODE section. */
93#define XSprePUSH (sp = PL_stack_base + ax - 1)
94
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95#define XSANY CvXSUBANY(cv)
96
97#define dXSI32 I32 ix = XSANY.any_i32
98
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99#ifdef __cplusplus
100# define XSINTERFACE_CVT(ret,name) ret (*name)(...)
101#else
102# define XSINTERFACE_CVT(ret,name) ret (*name)()
103#endif
104#define dXSFUNCTION(ret) XSINTERFACE_CVT(ret,XSFUNCTION)
2554589c 105#define XSINTERFACE_FUNC(ret,cv,f) ((XSINTERFACE_CVT(ret,))(f))
cfc02341 106#define XSINTERFACE_FUNC_SET(cv,f) \
a12c3db7 107 CvXSUBANY(cv).any_dxptr = (void (*) (pTHX_ void*))(f)
cfc02341 108
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109/* Simple macros to put new mortal values onto the stack. */
110/* Typically used to return values from XS functions. */
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111
112/*
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113=head1 Stack Manipulation Macros
114
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115=for apidoc Am|void|XST_mIV|int pos|IV iv
116Place an integer into the specified position C<pos> on the stack. The
117value is stored in a new mortal SV.
118
119=for apidoc Am|void|XST_mNV|int pos|NV nv
120Place a double into the specified position C<pos> on the stack. The value
121is stored in a new mortal SV.
122
123=for apidoc Am|void|XST_mPV|int pos|char* str
124Place a copy of a string into the specified position C<pos> on the stack.
125The value is stored in a new mortal SV.
126
127=for apidoc Am|void|XST_mNO|int pos
128Place C<&PL_sv_no> into the specified position C<pos> on the
129stack.
130
131=for apidoc Am|void|XST_mYES|int pos
132Place C<&PL_sv_yes> into the specified position C<pos> on the
133stack.
134
135=for apidoc Am|void|XST_mUNDEF|int pos
136Place C<&PL_sv_undef> into the specified position C<pos> on the
137stack.
138
139=for apidoc Am|void|XSRETURN|int nitems
140Return from XSUB, indicating number of items on the stack. This is usually
141handled by C<xsubpp>.
142
143=for apidoc Am|void|XSRETURN_IV|IV iv
144Return an integer from an XSUB immediately. Uses C<XST_mIV>.
145
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146=for apidoc Am|void|XSRETURN_UV|IV uv
147Return an integer from an XSUB immediately. Uses C<XST_mUV>.
148
954c1994 149=for apidoc Am|void|XSRETURN_NV|NV nv
d1be9408 150Return a double from an XSUB immediately. Uses C<XST_mNV>.
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151
152=for apidoc Am|void|XSRETURN_PV|char* str
153Return a copy of a string from an XSUB immediately. Uses C<XST_mPV>.
154
155=for apidoc Ams||XSRETURN_NO
156Return C<&PL_sv_no> from an XSUB immediately. Uses C<XST_mNO>.
157
158=for apidoc Ams||XSRETURN_YES
159Return C<&PL_sv_yes> from an XSUB immediately. Uses C<XST_mYES>.
160
161=for apidoc Ams||XSRETURN_UNDEF
162Return C<&PL_sv_undef> from an XSUB immediately. Uses C<XST_mUNDEF>.
163
164=for apidoc Ams||XSRETURN_EMPTY
165Return an empty list from an XSUB immediately.
166
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167=head1 Variables created by C<xsubpp> and C<xsubpp> internal functions
168
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169=for apidoc AmU||newXSproto
170Used by C<xsubpp> to hook up XSUBs as Perl subs. Adds Perl prototypes to
171the subs.
172
173=for apidoc AmU||XS_VERSION
174The version identifier for an XS module. This is usually
175handled automatically by C<ExtUtils::MakeMaker>. See C<XS_VERSION_BOOTCHECK>.
176
177=for apidoc Ams||XS_VERSION_BOOTCHECK
178Macro to verify that a PM module's $VERSION variable matches the XS
179module's C<XS_VERSION> variable. This is usually handled automatically by
180C<xsubpp>. See L<perlxs/"The VERSIONCHECK: Keyword">.
181
182=cut
183*/
184
4633a7c4 185#define XST_mIV(i,v) (ST(i) = sv_2mortal(newSViv(v)) )
108ccc45 186#define XST_mUV(i,v) (ST(i) = sv_2mortal(newSVuv(v)) )
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187#define XST_mNV(i,v) (ST(i) = sv_2mortal(newSVnv(v)) )
188#define XST_mPV(i,v) (ST(i) = sv_2mortal(newSVpv(v,0)))
79cb57f6 189#define XST_mPVN(i,v,n) (ST(i) = sv_2mortal(newSVpvn(v,n)))
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190#define XST_mNO(i) (ST(i) = &PL_sv_no )
191#define XST_mYES(i) (ST(i) = &PL_sv_yes )
192#define XST_mUNDEF(i) (ST(i) = &PL_sv_undef)
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193
194#define XSRETURN(off) \
195 STMT_START { \
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196 IV tmpXSoff = (off); \
197 PL_stack_sp = PL_stack_base + ax + (tmpXSoff - 1); \
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198 return; \
199 } STMT_END
200
80b92232 201#define XSRETURN_IV(v) STMT_START { XST_mIV(0,v); XSRETURN(1); } STMT_END
108ccc45 202#define XSRETURN_UV(v) STMT_START { XST_mUV(0,v); XSRETURN(1); } STMT_END
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203#define XSRETURN_NV(v) STMT_START { XST_mNV(0,v); XSRETURN(1); } STMT_END
204#define XSRETURN_PV(v) STMT_START { XST_mPV(0,v); XSRETURN(1); } STMT_END
954c1994 205#define XSRETURN_PVN(v,n) STMT_START { XST_mPVN(0,v,n); XSRETURN(1); } STMT_END
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206#define XSRETURN_NO STMT_START { XST_mNO(0); XSRETURN(1); } STMT_END
207#define XSRETURN_YES STMT_START { XST_mYES(0); XSRETURN(1); } STMT_END
208#define XSRETURN_UNDEF STMT_START { XST_mUNDEF(0); XSRETURN(1); } STMT_END
209#define XSRETURN_EMPTY STMT_START { XSRETURN(0); } STMT_END
382b8d97 210
37120919 211#define newXSproto(a,b,c,d) sv_setpv((SV*)newXS(a,b,c), d)
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212
213#ifdef XS_VERSION
c6af7a1a 214# define XS_VERSION_BOOTCHECK \
774d564b 215 STMT_START { \
3de3296f 216 SV *_sv; STRLEN n_a; \
2d8e6c8d 217 char *vn = Nullch, *module = SvPV(ST(0),n_a); \
774d564b 218 if (items >= 2) /* version supplied as bootstrap arg */ \
3de3296f 219 _sv = ST(1); \
774d564b 220 else { \
46fc3d4c 221 /* XXX GV_ADDWARN */ \
3de3296f 222 _sv = get_sv(Perl_form(aTHX_ "%s::%s", module, \
864dbfa3 223 vn = "XS_VERSION"), FALSE); \
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224 if (!_sv || !SvOK(_sv)) \
225 _sv = get_sv(Perl_form(aTHX_ "%s::%s", module, \
864dbfa3 226 vn = "VERSION"), FALSE); \
774d564b 227 } \
3de3296f 228 if (_sv && (!SvOK(_sv) || strNE(XS_VERSION, SvPV(_sv, n_a)))) \
894356b3 229 Perl_croak(aTHX_ "%s object version %s does not match %s%s%s%s %"SVf,\
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230 module, XS_VERSION, \
231 vn ? "$" : "", vn ? module : "", vn ? "::" : "", \
3de3296f 232 vn ? vn : "bootstrap parameter", _sv); \
80b92232 233 } STMT_END
720fb644 234#else
c6af7a1a 235# define XS_VERSION_BOOTCHECK
720fb644 236#endif
76e3520e 237
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238/*
239 The DBM_setFilter & DBM_ckFilter macros are only used by
240 the *DB*_File modules
241*/
242
243#define DBM_setFilter(db_type,code) \
244 { \
245 if (db_type) \
246 RETVAL = sv_mortalcopy(db_type) ; \
247 ST(0) = RETVAL ; \
248 if (db_type && (code == &PL_sv_undef)) { \
249 SvREFCNT_dec(db_type) ; \
250 db_type = NULL ; \
251 } \
252 else if (code) { \
253 if (db_type) \
254 sv_setsv(db_type, code) ; \
255 else \
256 db_type = newSVsv(code) ; \
257 } \
258 }
259
260#define DBM_ckFilter(arg,type,name) \
261 if (db->type) { \
262 if (db->filtering) { \
263 croak("recursion detected in %s", name) ; \
264 } \
265 ENTER ; \
266 SAVETMPS ; \
267 SAVEINT(db->filtering) ; \
268 db->filtering = TRUE ; \
269 SAVESPTR(DEFSV) ; \
270 DEFSV = arg ; \
271 SvTEMP_off(arg) ; \
272 PUSHMARK(SP) ; \
273 PUTBACK ; \
274 (void) perl_call_sv(db->type, G_DISCARD); \
275 SPAGAIN ; \
276 PUTBACK ; \
277 FREETMPS ; \
278 LEAVE ; \
279 }
280
51371543 281#if 1 /* for compatibility */
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282# define VTBL_sv &PL_vtbl_sv
283# define VTBL_env &PL_vtbl_env
284# define VTBL_envelem &PL_vtbl_envelem
285# define VTBL_sig &PL_vtbl_sig
286# define VTBL_sigelem &PL_vtbl_sigelem
287# define VTBL_pack &PL_vtbl_pack
288# define VTBL_packelem &PL_vtbl_packelem
289# define VTBL_dbline &PL_vtbl_dbline
290# define VTBL_isa &PL_vtbl_isa
291# define VTBL_isaelem &PL_vtbl_isaelem
292# define VTBL_arylen &PL_vtbl_arylen
293# define VTBL_glob &PL_vtbl_glob
294# define VTBL_mglob &PL_vtbl_mglob
295# define VTBL_nkeys &PL_vtbl_nkeys
296# define VTBL_taint &PL_vtbl_taint
297# define VTBL_substr &PL_vtbl_substr
298# define VTBL_vec &PL_vtbl_vec
299# define VTBL_pos &PL_vtbl_pos
300# define VTBL_bm &PL_vtbl_bm
301# define VTBL_fm &PL_vtbl_fm
302# define VTBL_uvar &PL_vtbl_uvar
303# define VTBL_defelem &PL_vtbl_defelem
304# define VTBL_regexp &PL_vtbl_regexp
305# define VTBL_regdata &PL_vtbl_regdata
306# define VTBL_regdatum &PL_vtbl_regdatum
307# ifdef USE_LOCALE_COLLATE
308# define VTBL_collxfrm &PL_vtbl_collxfrm
309# endif
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310# define VTBL_amagic &PL_vtbl_amagic
311# define VTBL_amagicelem &PL_vtbl_amagicelem
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312#endif
313
6f4183fe 314#include "perlapi.h"
c6af7a1a 315
e8ee3774 316#if defined(PERL_IMPLICIT_CONTEXT) && !defined(PERL_NO_GET_CONTEXT) && !defined(PERL_CORE)
c5be433b
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317# undef aTHX
318# undef aTHX_
54aff467
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319# define aTHX PERL_GET_THX
320# define aTHX_ aTHX,
54aff467
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321#endif
322
acfe0abc 323#if defined(PERL_IMPLICIT_SYS) && !defined(PERL_CORE)
c6af7a1a 324# ifndef NO_XSLOCKS
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325# if defined (NETWARE) && defined (USE_STDIO)
326# define times PerlProc_times
327# define setuid PerlProc_setuid
328# define setgid PerlProc_setgid
329# define getpid PerlProc_getpid
330# define pause PerlProc_pause
331# define exit PerlProc_exit
332# define _exit PerlProc__exit
333# else
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334# undef closedir
335# undef opendir
336# undef stdin
337# undef stdout
338# undef stderr
339# undef feof
340# undef ferror
341# undef fgetpos
342# undef ioctl
343# undef getlogin
344# undef setjmp
345# undef getc
346# undef ungetc
347# undef fileno
348
cb69f87a 349/* Following symbols were giving redefinition errors while building extensions - sgp 17th Oct 2000 */
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350#ifdef NETWARE
351# undef readdir
352# undef fstat
353# undef stat
354# undef longjmp
355# undef endhostent
356# undef endnetent
357# undef endprotoent
358# undef endservent
359# undef gethostbyaddr
360# undef gethostbyname
361# undef gethostent
362# undef getnetbyaddr
363# undef getnetbyname
364# undef getnetent
365# undef getprotobyname
366# undef getprotobynumber
367# undef getprotoent
368# undef getservbyname
369# undef getservbyport
370# undef getservent
371# undef inet_ntoa
372# undef sethostent
373# undef setnetent
374# undef setprotoent
375# undef setservent
376#endif /* NETWARE */
377
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378# undef socketpair
379
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380# define mkdir PerlDir_mkdir
381# define chdir PerlDir_chdir
382# define rmdir PerlDir_rmdir
383# define closedir PerlDir_close
384# define opendir PerlDir_open
385# define readdir PerlDir_read
386# define rewinddir PerlDir_rewind
387# define seekdir PerlDir_seek
388# define telldir PerlDir_tell
389# define putenv PerlEnv_putenv
390# define getenv PerlEnv_getenv
b2af26b1 391# define uname PerlEnv_uname
197357d0
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392# define stdin PerlSIO_stdin
393# define stdout PerlSIO_stdout
394# define stderr PerlSIO_stderr
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395# define fopen PerlSIO_fopen
396# define fclose PerlSIO_fclose
397# define feof PerlSIO_feof
398# define ferror PerlSIO_ferror
b6d726d6 399# define clearerr PerlSIO_clearerr
f9415d23
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400# define getc PerlSIO_getc
401# define fputc PerlSIO_fputc
402# define fputs PerlSIO_fputs
403# define fflush PerlSIO_fflush
404# define ungetc PerlSIO_ungetc
405# define fileno PerlSIO_fileno
406# define fdopen PerlSIO_fdopen
407# define freopen PerlSIO_freopen
408# define fread PerlSIO_fread
409# define fwrite PerlSIO_fwrite
22a46b6e
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410# define setbuf PerlSIO_setbuf
411# define setvbuf PerlSIO_setvbuf
412# define setlinebuf PerlSIO_setlinebuf
1f59ddd9
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413# define stdoutf PerlSIO_stdoutf
414# define vfprintf PerlSIO_vprintf
f9415d23
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415# define ftell PerlSIO_ftell
416# define fseek PerlSIO_fseek
417# define fgetpos PerlSIO_fgetpos
418# define fsetpos PerlSIO_fsetpos
419# define frewind PerlSIO_rewind
420# define tmpfile PerlSIO_tmpfile
c6af7a1a
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421# define access PerlLIO_access
422# define chmod PerlLIO_chmod
423# define chsize PerlLIO_chsize
424# define close PerlLIO_close
425# define dup PerlLIO_dup
426# define dup2 PerlLIO_dup2
427# define flock PerlLIO_flock
428# define fstat PerlLIO_fstat
429# define ioctl PerlLIO_ioctl
430# define isatty PerlLIO_isatty
6b980173 431# define link PerlLIO_link
c6af7a1a
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432# define lseek PerlLIO_lseek
433# define lstat PerlLIO_lstat
434# define mktemp PerlLIO_mktemp
435# define open PerlLIO_open
436# define read PerlLIO_read
437# define rename PerlLIO_rename
438# define setmode PerlLIO_setmode
4f49e16e 439# define stat(buf,sb) PerlLIO_stat(buf,sb)
c6af7a1a
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440# define tmpnam PerlLIO_tmpnam
441# define umask PerlLIO_umask
442# define unlink PerlLIO_unlink
443# define utime PerlLIO_utime
444# define write PerlLIO_write
445# define malloc PerlMem_malloc
446# define realloc PerlMem_realloc
447# define free PerlMem_free
448# define abort PerlProc_abort
449# define exit PerlProc_exit
450# define _exit PerlProc__exit
451# define execl PerlProc_execl
452# define execv PerlProc_execv
453# define execvp PerlProc_execvp
454# define getuid PerlProc_getuid
455# define geteuid PerlProc_geteuid
456# define getgid PerlProc_getgid
457# define getegid PerlProc_getegid
458# define getlogin PerlProc_getlogin
459# define kill PerlProc_kill
460# define killpg PerlProc_killpg
461# define pause PerlProc_pause
462# define popen PerlProc_popen
463# define pclose PerlProc_pclose
464# define pipe PerlProc_pipe
465# define setuid PerlProc_setuid
466# define setgid PerlProc_setgid
467# define sleep PerlProc_sleep
468# define times PerlProc_times
469# define wait PerlProc_wait
470# define setjmp PerlProc_setjmp
471# define longjmp PerlProc_longjmp
472# define signal PerlProc_signal
7766f137 473# define getpid PerlProc_getpid
57ab3dfe 474# define gettimeofday PerlProc_gettimeofday
c6af7a1a
GS
475# define htonl PerlSock_htonl
476# define htons PerlSock_htons
477# define ntohl PerlSock_ntohl
478# define ntohs PerlSock_ntohs
479# define accept PerlSock_accept
480# define bind PerlSock_bind
481# define connect PerlSock_connect
482# define endhostent PerlSock_endhostent
483# define endnetent PerlSock_endnetent
484# define endprotoent PerlSock_endprotoent
485# define endservent PerlSock_endservent
486# define gethostbyaddr PerlSock_gethostbyaddr
487# define gethostbyname PerlSock_gethostbyname
488# define gethostent PerlSock_gethostent
489# define gethostname PerlSock_gethostname
490# define getnetbyaddr PerlSock_getnetbyaddr
491# define getnetbyname PerlSock_getnetbyname
492# define getnetent PerlSock_getnetent
493# define getpeername PerlSock_getpeername
494# define getprotobyname PerlSock_getprotobyname
495# define getprotobynumber PerlSock_getprotobynumber
496# define getprotoent PerlSock_getprotoent
497# define getservbyname PerlSock_getservbyname
498# define getservbyport PerlSock_getservbyport
499# define getservent PerlSock_getservent
500# define getsockname PerlSock_getsockname
501# define getsockopt PerlSock_getsockopt
502# define inet_addr PerlSock_inet_addr
503# define inet_ntoa PerlSock_inet_ntoa
504# define listen PerlSock_listen
505# define recv PerlSock_recv
506# define recvfrom PerlSock_recvfrom
507# define select PerlSock_select
508# define send PerlSock_send
509# define sendto PerlSock_sendto
510# define sethostent PerlSock_sethostent
511# define setnetent PerlSock_setnetent
512# define setprotoent PerlSock_setprotoent
513# define setservent PerlSock_setservent
514# define setsockopt PerlSock_setsockopt
515# define shutdown PerlSock_shutdown
516# define socket PerlSock_socket
517# define socketpair PerlSock_socketpair
2986a63f 518# endif /* NETWARE && USE_STDIO */
21c5e947
JH
519
520# ifdef USE_SOCKETS_AS_HANDLES
521# undef fd_set
522# undef FD_SET
523# undef FD_CLR
524# undef FD_ISSET
525# undef FD_ZERO
526# define fd_set Perl_fd_set
527# define FD_SET(n,p) PERL_FD_SET(n,p)
528# define FD_CLR(n,p) PERL_FD_CLR(n,p)
529# define FD_ISSET(n,p) PERL_FD_ISSET(n,p)
530# define FD_ZERO(p) PERL_FD_ZERO(p)
531# endif /* USE_SOCKETS_AS_HANDLES */
532
c6af7a1a 533# endif /* NO_XSLOCKS */
acfe0abc 534#endif /* PERL_IMPLICIT_SYS && !PERL_CORE */
b4ba0ab9 535
cfeeb022 536#endif /* _INC_PERL_XSUB_H */ /* include guard */