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1 | /* |
2 | * Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved. |
3 | * This program is free software; you can redistribute it and/or |
4 | * modify it under the same terms as Perl itself. |
5 | */ |
6 | |
c5be433b |
7 | #define PERL_NO_GET_CONTEXT |
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8 | #include "EXTERN.h" |
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9 | #define PERLIO_NOT_STDIO 1 |
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10 | #include "perl.h" |
11 | #include "XSUB.h" |
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12 | #include "poll.h" |
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13 | #ifdef I_UNISTD |
14 | # include <unistd.h> |
15 | #endif |
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16 | #if defined(I_FCNTL) || defined(HAS_FCNTL) |
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17 | # include <fcntl.h> |
18 | #endif |
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19 | |
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20 | #ifdef PerlIO |
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21 | typedef int SysRet; |
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22 | typedef PerlIO * InputStream; |
23 | typedef PerlIO * OutputStream; |
2a0cf753 |
24 | #else |
25 | #define PERLIO_IS_STDIO 1 |
26 | typedef int SysRet; |
27 | typedef FILE * InputStream; |
28 | typedef FILE * OutputStream; |
29 | #endif |
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30 | |
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31 | #define MY_start_subparse(fmt,flags) start_subparse(fmt,flags) |
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32 | |
33 | #ifndef gv_stashpvn |
34 | #define gv_stashpvn(str,len,flags) gv_stashpv(str,flags) |
35 | #endif |
36 | |
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37 | static int |
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38 | not_here(char *s) |
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39 | { |
40 | croak("%s not implemented on this architecture", s); |
41 | return -1; |
42 | } |
43 | |
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44 | |
45 | #ifndef PerlIO |
46 | #define PerlIO_fileno(f) fileno(f) |
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47 | #endif |
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48 | |
49 | static int |
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50 | io_blocking(InputStream f, int block) |
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51 | { |
52 | int RETVAL; |
53 | if(!f) { |
54 | errno = EBADF; |
55 | return -1; |
56 | } |
57 | #if defined(HAS_FCNTL) |
58 | RETVAL = fcntl(PerlIO_fileno(f), F_GETFL, 0); |
59 | if (RETVAL >= 0) { |
60 | int mode = RETVAL; |
61 | #ifdef O_NONBLOCK |
766a733e |
62 | /* POSIX style */ |
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63 | #if defined(O_NDELAY) && O_NDELAY != O_NONBLOCK |
766a733e |
64 | /* Ooops has O_NDELAY too - make sure we don't |
6fd254a4 |
65 | * get SysV behaviour by mistake. */ |
cf7fe8a2 |
66 | |
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67 | /* E.g. In UNICOS and UNICOS/mk a F_GETFL returns an O_NDELAY |
68 | * after a successful F_SETFL of an O_NONBLOCK. */ |
69 | RETVAL = RETVAL & (O_NONBLOCK | O_NDELAY) ? 0 : 1; |
70 | |
71 | if (block >= 0) { |
72 | if ((mode & O_NDELAY) || ((block == 0) && !(mode & O_NONBLOCK))) { |
73 | int ret; |
74 | mode = (mode & ~O_NDELAY) | O_NONBLOCK; |
75 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
76 | if(ret < 0) |
77 | RETVAL = ret; |
78 | } |
79 | else |
80 | if ((mode & O_NDELAY) || ((block > 0) && (mode & O_NONBLOCK))) { |
81 | int ret; |
82 | mode &= ~(O_NONBLOCK | O_NDELAY); |
83 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
84 | if(ret < 0) |
85 | RETVAL = ret; |
86 | } |
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87 | } |
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88 | #else |
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89 | /* Standard POSIX */ |
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90 | RETVAL = RETVAL & O_NONBLOCK ? 0 : 1; |
91 | |
92 | if ((block == 0) && !(mode & O_NONBLOCK)) { |
93 | int ret; |
94 | mode |= O_NONBLOCK; |
95 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
96 | if(ret < 0) |
97 | RETVAL = ret; |
98 | } |
99 | else if ((block > 0) && (mode & O_NONBLOCK)) { |
100 | int ret; |
101 | mode &= ~O_NONBLOCK; |
102 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
103 | if(ret < 0) |
104 | RETVAL = ret; |
105 | } |
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106 | #endif |
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107 | #else |
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108 | /* Not POSIX - better have O_NDELAY or we can't cope. |
109 | * for BSD-ish machines this is an acceptable alternative |
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110 | * for SysV we can't tell "would block" from EOF but that is |
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111 | * the way SysV is... |
112 | */ |
113 | RETVAL = RETVAL & O_NDELAY ? 0 : 1; |
114 | |
115 | if ((block == 0) && !(mode & O_NDELAY)) { |
116 | int ret; |
117 | mode |= O_NDELAY; |
118 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
119 | if(ret < 0) |
120 | RETVAL = ret; |
121 | } |
122 | else if ((block > 0) && (mode & O_NDELAY)) { |
123 | int ret; |
124 | mode &= ~O_NDELAY; |
125 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
126 | if(ret < 0) |
127 | RETVAL = ret; |
128 | } |
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129 | #endif |
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130 | } |
131 | return RETVAL; |
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132 | #else |
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133 | return -1; |
8add82fc |
134 | #endif |
8add82fc |
135 | } |
136 | |
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137 | MODULE = IO PACKAGE = IO::Seekable PREFIX = f |
138 | |
139 | SV * |
140 | fgetpos(handle) |
141 | InputStream handle |
142 | CODE: |
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143 | if (handle) { |
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144 | #ifdef PerlIO |
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145 | ST(0) = sv_2mortal(newSV(0)); |
146 | if (PerlIO_getpos(handle, ST(0)) != 0) { |
147 | ST(0) = &PL_sv_undef; |
148 | } |
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149 | #else |
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150 | if (fgetpos(handle, &pos)) { |
a6a714bd |
151 | ST(0) = &PL_sv_undef; |
152 | } else { |
153 | ST(0) = sv_2mortal(newSVpv((char*)&pos, sizeof(Fpos_t))); |
154 | } |
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155 | #endif |
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156 | } |
157 | else { |
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158 | ST(0) = &PL_sv_undef; |
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159 | errno = EINVAL; |
160 | } |
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161 | |
162 | SysRet |
163 | fsetpos(handle, pos) |
164 | InputStream handle |
165 | SV * pos |
166 | CODE: |
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167 | if (handle) { |
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168 | #ifdef PerlIO |
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169 | RETVAL = PerlIO_setpos(handle, pos); |
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170 | #else |
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171 | char *p; |
172 | STRLEN len; |
173 | if ((p = SvPV(pos,len)) && len == sizeof(Fpos_t)) { |
174 | RETVAL = fsetpos(handle, (Fpos_t*)p); |
175 | } |
176 | else { |
177 | RETVAL = -1; |
178 | errno = EINVAL; |
179 | } |
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180 | #endif |
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181 | } |
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182 | else { |
183 | RETVAL = -1; |
184 | errno = EINVAL; |
185 | } |
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186 | OUTPUT: |
187 | RETVAL |
188 | |
189 | MODULE = IO PACKAGE = IO::File PREFIX = f |
190 | |
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191 | SV * |
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192 | new_tmpfile(packname = "IO::File") |
193 | char * packname |
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194 | PREINIT: |
195 | OutputStream fp; |
196 | GV *gv; |
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197 | CODE: |
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198 | #ifdef PerlIO |
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199 | fp = PerlIO_tmpfile(); |
2a0cf753 |
200 | #else |
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201 | fp = tmpfile(); |
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202 | #endif |
a375a877 |
203 | gv = (GV*)SvREFCNT_inc(newGVgen(packname)); |
204 | hv_delete(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), G_DISCARD); |
205 | if (do_open(gv, "+>&", 3, FALSE, 0, 0, fp)) { |
6d5cdeed |
206 | ST(0) = sv_2mortal(newRV((SV*)gv)); |
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207 | sv_bless(ST(0), gv_stashpv(packname, TRUE)); |
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208 | SvREFCNT_dec(gv); /* undo increment in newRV() */ |
a375a877 |
209 | } |
210 | else { |
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211 | ST(0) = &PL_sv_undef; |
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212 | SvREFCNT_dec(gv); |
213 | } |
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214 | |
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215 | MODULE = IO PACKAGE = IO::Poll |
216 | |
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217 | void |
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218 | _poll(timeout,...) |
219 | int timeout; |
220 | PPCODE: |
221 | { |
222 | #ifdef HAS_POLL |
223 | int nfd = (items - 1) / 2; |
224 | SV *tmpsv = NEWSV(999,nfd * sizeof(struct pollfd)); |
225 | struct pollfd *fds = (struct pollfd *)SvPVX(tmpsv); |
226 | int i,j,ret; |
227 | for(i=1, j=0 ; j < nfd ; j++) { |
228 | fds[j].fd = SvIV(ST(i)); |
229 | i++; |
230 | fds[j].events = SvIV(ST(i)); |
231 | i++; |
232 | fds[j].revents = 0; |
233 | } |
234 | if((ret = poll(fds,nfd,timeout)) >= 0) { |
235 | for(i=1, j=0 ; j < nfd ; j++) { |
236 | sv_setiv(ST(i), fds[j].fd); i++; |
237 | sv_setiv(ST(i), fds[j].revents); i++; |
238 | } |
239 | } |
240 | SvREFCNT_dec(tmpsv); |
241 | XSRETURN_IV(ret); |
242 | #else |
243 | not_here("IO::Poll::poll"); |
244 | #endif |
245 | } |
246 | |
247 | MODULE = IO PACKAGE = IO::Handle PREFIX = io_ |
248 | |
249 | void |
250 | io_blocking(handle,blk=-1) |
251 | InputStream handle |
252 | int blk |
253 | PROTOTYPE: $;$ |
254 | CODE: |
255 | { |
256 | int ret = io_blocking(handle, items == 1 ? -1 : blk ? 1 : 0); |
257 | if(ret >= 0) |
258 | XSRETURN_IV(ret); |
259 | else |
260 | XSRETURN_UNDEF; |
261 | } |
262 | |
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263 | MODULE = IO PACKAGE = IO::Handle PREFIX = f |
264 | |
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265 | |
266 | int |
267 | ungetc(handle, c) |
268 | InputStream handle |
269 | int c |
270 | CODE: |
271 | if (handle) |
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272 | #ifdef PerlIO |
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273 | RETVAL = PerlIO_ungetc(handle, c); |
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274 | #else |
275 | RETVAL = ungetc(c, handle); |
276 | #endif |
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277 | else { |
278 | RETVAL = -1; |
279 | errno = EINVAL; |
280 | } |
281 | OUTPUT: |
282 | RETVAL |
283 | |
284 | int |
285 | ferror(handle) |
286 | InputStream handle |
287 | CODE: |
288 | if (handle) |
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289 | #ifdef PerlIO |
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290 | RETVAL = PerlIO_error(handle); |
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291 | #else |
292 | RETVAL = ferror(handle); |
293 | #endif |
294 | else { |
295 | RETVAL = -1; |
296 | errno = EINVAL; |
297 | } |
298 | OUTPUT: |
299 | RETVAL |
300 | |
301 | int |
302 | clearerr(handle) |
303 | InputStream handle |
304 | CODE: |
305 | if (handle) { |
306 | #ifdef PerlIO |
307 | PerlIO_clearerr(handle); |
308 | #else |
309 | clearerr(handle); |
310 | #endif |
311 | RETVAL = 0; |
312 | } |
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313 | else { |
314 | RETVAL = -1; |
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315 | errno = EINVAL; |
316 | } |
317 | OUTPUT: |
318 | RETVAL |
319 | |
320 | int |
321 | untaint(handle) |
322 | SV * handle |
323 | CODE: |
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324 | #ifdef IOf_UNTAINT |
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325 | IO * io; |
326 | io = sv_2io(handle); |
327 | if (io) { |
328 | IoFLAGS(io) |= IOf_UNTAINT; |
329 | RETVAL = 0; |
330 | } |
331 | else { |
7a4c00b4 |
332 | #endif |
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333 | RETVAL = -1; |
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334 | errno = EINVAL; |
7a4c00b4 |
335 | #ifdef IOf_UNTAINT |
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336 | } |
7a4c00b4 |
337 | #endif |
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338 | OUTPUT: |
339 | RETVAL |
340 | |
341 | SysRet |
342 | fflush(handle) |
343 | OutputStream handle |
344 | CODE: |
345 | if (handle) |
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346 | #ifdef PerlIO |
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347 | RETVAL = PerlIO_flush(handle); |
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348 | #else |
349 | RETVAL = Fflush(handle); |
350 | #endif |
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351 | else { |
352 | RETVAL = -1; |
353 | errno = EINVAL; |
354 | } |
355 | OUTPUT: |
356 | RETVAL |
357 | |
358 | void |
359 | setbuf(handle, buf) |
360 | OutputStream handle |
361 | char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), BUFSIZ) : 0; |
362 | CODE: |
363 | if (handle) |
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364 | #ifdef PERLIO_IS_STDIO |
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365 | setbuf(handle, buf); |
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366 | #else |
367 | not_here("IO::Handle::setbuf"); |
368 | #endif |
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369 | |
370 | SysRet |
371 | setvbuf(handle, buf, type, size) |
372 | OutputStream handle |
373 | char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), SvIV(ST(3))) : 0; |
374 | int type |
375 | int size |
376 | CODE: |
1eeb0f31 |
377 | #if defined(PERLIO_IS_STDIO) && defined(_IOFBF) && defined(HAS_SETVBUF) |
d924de76 |
378 | if (!handle) /* Try input stream. */ |
379 | handle = IoIFP(sv_2io(ST(0))); |
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380 | if (handle) |
381 | RETVAL = setvbuf(handle, buf, type, size); |
382 | else { |
383 | RETVAL = -1; |
384 | errno = EINVAL; |
385 | } |
386 | #else |
61839fa9 |
387 | RETVAL = (SysRet) not_here("IO::Handle::setvbuf"); |
760ac839 |
388 | #endif |
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389 | OUTPUT: |
390 | RETVAL |
391 | |
392 | |
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393 | SysRet |
394 | fsync(handle) |
395 | OutputStream handle |
396 | CODE: |
397 | #ifdef HAS_FSYNC |
398 | if(handle) |
399 | RETVAL = fsync(PerlIO_fileno(handle)); |
400 | else { |
401 | RETVAL = -1; |
402 | errno = EINVAL; |
403 | } |
404 | #else |
405 | RETVAL = (SysRet) not_here("IO::Handle::sync"); |
406 | #endif |
407 | OUTPUT: |
408 | RETVAL |
409 | |
410 | |
411 | BOOT: |
412 | { |
413 | HV *stash; |
414 | /* |
415 | * constant subs for IO::Poll |
416 | */ |
417 | stash = gv_stashpvn("IO::Poll", 8, TRUE); |
418 | #ifdef POLLIN |
419 | newCONSTSUB(stash,"POLLIN",newSViv(POLLIN)); |
420 | #endif |
421 | #ifdef POLLPRI |
422 | newCONSTSUB(stash,"POLLPRI", newSViv(POLLPRI)); |
423 | #endif |
424 | #ifdef POLLOUT |
425 | newCONSTSUB(stash,"POLLOUT", newSViv(POLLOUT)); |
426 | #endif |
427 | #ifdef POLLRDNORM |
428 | newCONSTSUB(stash,"POLLRDNORM", newSViv(POLLRDNORM)); |
429 | #endif |
430 | #ifdef POLLWRNORM |
431 | newCONSTSUB(stash,"POLLWRNORM", newSViv(POLLWRNORM)); |
432 | #endif |
433 | #ifdef POLLRDBAND |
434 | newCONSTSUB(stash,"POLLRDBAND", newSViv(POLLRDBAND)); |
435 | #endif |
436 | #ifdef POLLWRBAND |
437 | newCONSTSUB(stash,"POLLWRBAND", newSViv(POLLWRBAND)); |
438 | #endif |
439 | #ifdef POLLNORM |
440 | newCONSTSUB(stash,"POLLNORM", newSViv(POLLNORM)); |
441 | #endif |
442 | #ifdef POLLERR |
443 | newCONSTSUB(stash,"POLLERR", newSViv(POLLERR)); |
444 | #endif |
445 | #ifdef POLLHUP |
446 | newCONSTSUB(stash,"POLLHUP", newSViv(POLLHUP)); |
447 | #endif |
448 | #ifdef POLLNVAL |
449 | newCONSTSUB(stash,"POLLNVAL", newSViv(POLLNVAL)); |
450 | #endif |
451 | /* |
452 | * constant subs for IO::Handle |
453 | */ |
454 | stash = gv_stashpvn("IO::Handle", 10, TRUE); |
455 | #ifdef _IOFBF |
456 | newCONSTSUB(stash,"_IOFBF", newSViv(_IOFBF)); |
457 | #endif |
458 | #ifdef _IOLBF |
459 | newCONSTSUB(stash,"_IOLBF", newSViv(_IOLBF)); |
460 | #endif |
461 | #ifdef _IONBF |
462 | newCONSTSUB(stash,"_IONBF", newSViv(_IONBF)); |
463 | #endif |
464 | #ifdef SEEK_SET |
465 | newCONSTSUB(stash,"SEEK_SET", newSViv(SEEK_SET)); |
466 | #endif |
467 | #ifdef SEEK_CUR |
468 | newCONSTSUB(stash,"SEEK_CUR", newSViv(SEEK_CUR)); |
469 | #endif |
470 | #ifdef SEEK_END |
471 | newCONSTSUB(stash,"SEEK_END", newSViv(SEEK_END)); |
472 | #endif |
cf7fe8a2 |
473 | } |