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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) ; \
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270 if (name[7] == 's') \
271 arg = newSVsv(arg); \
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272 DEFSV = arg ; \
273 SvTEMP_off(arg) ; \
274 PUSHMARK(SP) ; \
275 PUTBACK ; \
276 (void) perl_call_sv(db->type, G_DISCARD); \
277 SPAGAIN ; \
278 PUTBACK ; \
279 FREETMPS ; \
280 LEAVE ; \
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281 if (name[7] == 's'){ \
282 arg = sv_2mortal(arg); \
283 } \
284 SvOKp(arg); \
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285 }
286
51371543 287#if 1 /* for compatibility */
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288# define VTBL_sv &PL_vtbl_sv
289# define VTBL_env &PL_vtbl_env
290# define VTBL_envelem &PL_vtbl_envelem
291# define VTBL_sig &PL_vtbl_sig
292# define VTBL_sigelem &PL_vtbl_sigelem
293# define VTBL_pack &PL_vtbl_pack
294# define VTBL_packelem &PL_vtbl_packelem
295# define VTBL_dbline &PL_vtbl_dbline
296# define VTBL_isa &PL_vtbl_isa
297# define VTBL_isaelem &PL_vtbl_isaelem
298# define VTBL_arylen &PL_vtbl_arylen
299# define VTBL_glob &PL_vtbl_glob
300# define VTBL_mglob &PL_vtbl_mglob
301# define VTBL_nkeys &PL_vtbl_nkeys
302# define VTBL_taint &PL_vtbl_taint
303# define VTBL_substr &PL_vtbl_substr
304# define VTBL_vec &PL_vtbl_vec
305# define VTBL_pos &PL_vtbl_pos
306# define VTBL_bm &PL_vtbl_bm
307# define VTBL_fm &PL_vtbl_fm
308# define VTBL_uvar &PL_vtbl_uvar
309# define VTBL_defelem &PL_vtbl_defelem
310# define VTBL_regexp &PL_vtbl_regexp
311# define VTBL_regdata &PL_vtbl_regdata
312# define VTBL_regdatum &PL_vtbl_regdatum
313# ifdef USE_LOCALE_COLLATE
314# define VTBL_collxfrm &PL_vtbl_collxfrm
315# endif
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316# define VTBL_amagic &PL_vtbl_amagic
317# define VTBL_amagicelem &PL_vtbl_amagicelem
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318#endif
319
6f4183fe 320#include "perlapi.h"
c6af7a1a 321
e8ee3774 322#if defined(PERL_IMPLICIT_CONTEXT) && !defined(PERL_NO_GET_CONTEXT) && !defined(PERL_CORE)
c5be433b
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323# undef aTHX
324# undef aTHX_
54aff467
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325# define aTHX PERL_GET_THX
326# define aTHX_ aTHX,
54aff467
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327#endif
328
acfe0abc 329#if defined(PERL_IMPLICIT_SYS) && !defined(PERL_CORE)
c6af7a1a 330# ifndef NO_XSLOCKS
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331# if defined (NETWARE) && defined (USE_STDIO)
332# define times PerlProc_times
333# define setuid PerlProc_setuid
334# define setgid PerlProc_setgid
335# define getpid PerlProc_getpid
336# define pause PerlProc_pause
337# define exit PerlProc_exit
338# define _exit PerlProc__exit
339# else
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340# undef closedir
341# undef opendir
342# undef stdin
343# undef stdout
344# undef stderr
345# undef feof
346# undef ferror
347# undef fgetpos
348# undef ioctl
349# undef getlogin
350# undef setjmp
351# undef getc
352# undef ungetc
353# undef fileno
354
cb69f87a 355/* Following symbols were giving redefinition errors while building extensions - sgp 17th Oct 2000 */
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356#ifdef NETWARE
357# undef readdir
358# undef fstat
359# undef stat
360# undef longjmp
361# undef endhostent
362# undef endnetent
363# undef endprotoent
364# undef endservent
365# undef gethostbyaddr
366# undef gethostbyname
367# undef gethostent
368# undef getnetbyaddr
369# undef getnetbyname
370# undef getnetent
371# undef getprotobyname
372# undef getprotobynumber
373# undef getprotoent
374# undef getservbyname
375# undef getservbyport
376# undef getservent
377# undef inet_ntoa
378# undef sethostent
379# undef setnetent
380# undef setprotoent
381# undef setservent
382#endif /* NETWARE */
383
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384# undef socketpair
385
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386# define mkdir PerlDir_mkdir
387# define chdir PerlDir_chdir
388# define rmdir PerlDir_rmdir
389# define closedir PerlDir_close
390# define opendir PerlDir_open
391# define readdir PerlDir_read
392# define rewinddir PerlDir_rewind
393# define seekdir PerlDir_seek
394# define telldir PerlDir_tell
395# define putenv PerlEnv_putenv
396# define getenv PerlEnv_getenv
b2af26b1 397# define uname PerlEnv_uname
197357d0
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398# define stdin PerlSIO_stdin
399# define stdout PerlSIO_stdout
400# define stderr PerlSIO_stderr
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401# define fopen PerlSIO_fopen
402# define fclose PerlSIO_fclose
403# define feof PerlSIO_feof
404# define ferror PerlSIO_ferror
b6d726d6 405# define clearerr PerlSIO_clearerr
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406# define getc PerlSIO_getc
407# define fputc PerlSIO_fputc
408# define fputs PerlSIO_fputs
409# define fflush PerlSIO_fflush
410# define ungetc PerlSIO_ungetc
411# define fileno PerlSIO_fileno
412# define fdopen PerlSIO_fdopen
413# define freopen PerlSIO_freopen
414# define fread PerlSIO_fread
415# define fwrite PerlSIO_fwrite
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416# define setbuf PerlSIO_setbuf
417# define setvbuf PerlSIO_setvbuf
418# define setlinebuf PerlSIO_setlinebuf
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419# define stdoutf PerlSIO_stdoutf
420# define vfprintf PerlSIO_vprintf
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421# define ftell PerlSIO_ftell
422# define fseek PerlSIO_fseek
423# define fgetpos PerlSIO_fgetpos
424# define fsetpos PerlSIO_fsetpos
425# define frewind PerlSIO_rewind
426# define tmpfile PerlSIO_tmpfile
c6af7a1a
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427# define access PerlLIO_access
428# define chmod PerlLIO_chmod
429# define chsize PerlLIO_chsize
430# define close PerlLIO_close
431# define dup PerlLIO_dup
432# define dup2 PerlLIO_dup2
433# define flock PerlLIO_flock
434# define fstat PerlLIO_fstat
435# define ioctl PerlLIO_ioctl
436# define isatty PerlLIO_isatty
6b980173 437# define link PerlLIO_link
c6af7a1a
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438# define lseek PerlLIO_lseek
439# define lstat PerlLIO_lstat
440# define mktemp PerlLIO_mktemp
441# define open PerlLIO_open
442# define read PerlLIO_read
443# define rename PerlLIO_rename
444# define setmode PerlLIO_setmode
4f49e16e 445# define stat(buf,sb) PerlLIO_stat(buf,sb)
c6af7a1a
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446# define tmpnam PerlLIO_tmpnam
447# define umask PerlLIO_umask
448# define unlink PerlLIO_unlink
449# define utime PerlLIO_utime
450# define write PerlLIO_write
451# define malloc PerlMem_malloc
452# define realloc PerlMem_realloc
453# define free PerlMem_free
454# define abort PerlProc_abort
455# define exit PerlProc_exit
456# define _exit PerlProc__exit
457# define execl PerlProc_execl
458# define execv PerlProc_execv
459# define execvp PerlProc_execvp
460# define getuid PerlProc_getuid
461# define geteuid PerlProc_geteuid
462# define getgid PerlProc_getgid
463# define getegid PerlProc_getegid
464# define getlogin PerlProc_getlogin
465# define kill PerlProc_kill
466# define killpg PerlProc_killpg
467# define pause PerlProc_pause
468# define popen PerlProc_popen
469# define pclose PerlProc_pclose
470# define pipe PerlProc_pipe
471# define setuid PerlProc_setuid
472# define setgid PerlProc_setgid
473# define sleep PerlProc_sleep
474# define times PerlProc_times
475# define wait PerlProc_wait
476# define setjmp PerlProc_setjmp
477# define longjmp PerlProc_longjmp
478# define signal PerlProc_signal
7766f137 479# define getpid PerlProc_getpid
57ab3dfe 480# define gettimeofday PerlProc_gettimeofday
c6af7a1a
GS
481# define htonl PerlSock_htonl
482# define htons PerlSock_htons
483# define ntohl PerlSock_ntohl
484# define ntohs PerlSock_ntohs
485# define accept PerlSock_accept
486# define bind PerlSock_bind
487# define connect PerlSock_connect
488# define endhostent PerlSock_endhostent
489# define endnetent PerlSock_endnetent
490# define endprotoent PerlSock_endprotoent
491# define endservent PerlSock_endservent
492# define gethostbyaddr PerlSock_gethostbyaddr
493# define gethostbyname PerlSock_gethostbyname
494# define gethostent PerlSock_gethostent
495# define gethostname PerlSock_gethostname
496# define getnetbyaddr PerlSock_getnetbyaddr
497# define getnetbyname PerlSock_getnetbyname
498# define getnetent PerlSock_getnetent
499# define getpeername PerlSock_getpeername
500# define getprotobyname PerlSock_getprotobyname
501# define getprotobynumber PerlSock_getprotobynumber
502# define getprotoent PerlSock_getprotoent
503# define getservbyname PerlSock_getservbyname
504# define getservbyport PerlSock_getservbyport
505# define getservent PerlSock_getservent
506# define getsockname PerlSock_getsockname
507# define getsockopt PerlSock_getsockopt
508# define inet_addr PerlSock_inet_addr
509# define inet_ntoa PerlSock_inet_ntoa
510# define listen PerlSock_listen
511# define recv PerlSock_recv
512# define recvfrom PerlSock_recvfrom
513# define select PerlSock_select
514# define send PerlSock_send
515# define sendto PerlSock_sendto
516# define sethostent PerlSock_sethostent
517# define setnetent PerlSock_setnetent
518# define setprotoent PerlSock_setprotoent
519# define setservent PerlSock_setservent
520# define setsockopt PerlSock_setsockopt
521# define shutdown PerlSock_shutdown
522# define socket PerlSock_socket
523# define socketpair PerlSock_socketpair
2986a63f 524# endif /* NETWARE && USE_STDIO */
21c5e947
JH
525
526# ifdef USE_SOCKETS_AS_HANDLES
527# undef fd_set
528# undef FD_SET
529# undef FD_CLR
530# undef FD_ISSET
531# undef FD_ZERO
532# define fd_set Perl_fd_set
533# define FD_SET(n,p) PERL_FD_SET(n,p)
534# define FD_CLR(n,p) PERL_FD_CLR(n,p)
535# define FD_ISSET(n,p) PERL_FD_ISSET(n,p)
536# define FD_ZERO(p) PERL_FD_ZERO(p)
537# endif /* USE_SOCKETS_AS_HANDLES */
538
c6af7a1a 539# endif /* NO_XSLOCKS */
acfe0abc 540#endif /* PERL_IMPLICIT_SYS && !PERL_CORE */
b4ba0ab9 541
cfeeb022 542#endif /* _INC_PERL_XSUB_H */ /* include guard */