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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; |
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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 |
62 | /* POSIX style */ |
63 | #if defined(O_NDELAY) && O_NDELAY != O_NONBLOCK |
64 | /* Ooops has O_NDELAY too - make sure we don't |
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65 | * get SysV behaviour by mistake. */ |
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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 */ |
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 | } |
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 |
110 | * for SysV we can't tell "would block" from EOF but that is |
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; |
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134 | #endif |
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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) { |
144 | Fpos_t pos; |
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145 | #ifdef PerlIO |
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146 | PerlIO_getpos(handle, &pos); |
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147 | #else |
148 | fgetpos(handle, &pos); |
149 | #endif |
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150 | ST(0) = sv_2mortal(newSVpv((char*)&pos, sizeof(Fpos_t))); |
151 | } |
152 | else { |
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153 | ST(0) = &PL_sv_undef; |
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154 | errno = EINVAL; |
155 | } |
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156 | |
157 | SysRet |
158 | fsetpos(handle, pos) |
159 | InputStream handle |
160 | SV * pos |
161 | CODE: |
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162 | char *p; |
163 | STRLEN len; |
164 | if (handle && (p = SvPV(pos,len)) && len == sizeof(Fpos_t)) |
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165 | #ifdef PerlIO |
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166 | RETVAL = PerlIO_setpos(handle, (Fpos_t*)p); |
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167 | #else |
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168 | RETVAL = fsetpos(handle, (Fpos_t*)p); |
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169 | #endif |
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170 | else { |
171 | RETVAL = -1; |
172 | errno = EINVAL; |
173 | } |
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174 | OUTPUT: |
175 | RETVAL |
176 | |
177 | MODULE = IO PACKAGE = IO::File PREFIX = f |
178 | |
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179 | SV * |
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180 | new_tmpfile(packname = "IO::File") |
181 | char * packname |
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182 | PREINIT: |
183 | OutputStream fp; |
184 | GV *gv; |
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185 | CODE: |
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186 | #ifdef PerlIO |
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187 | fp = PerlIO_tmpfile(); |
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188 | #else |
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189 | fp = tmpfile(); |
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190 | #endif |
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191 | gv = (GV*)SvREFCNT_inc(newGVgen(packname)); |
192 | hv_delete(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), G_DISCARD); |
193 | if (do_open(gv, "+>&", 3, FALSE, 0, 0, fp)) { |
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194 | ST(0) = sv_2mortal(newRV((SV*)gv)); |
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195 | sv_bless(ST(0), gv_stashpv(packname, TRUE)); |
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196 | SvREFCNT_dec(gv); /* undo increment in newRV() */ |
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197 | } |
198 | else { |
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199 | ST(0) = &PL_sv_undef; |
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200 | SvREFCNT_dec(gv); |
201 | } |
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202 | |
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203 | MODULE = IO PACKAGE = IO::Poll |
204 | |
205 | void |
206 | _poll(timeout,...) |
207 | int timeout; |
208 | PPCODE: |
209 | { |
210 | #ifdef HAS_POLL |
211 | int nfd = (items - 1) / 2; |
212 | SV *tmpsv = NEWSV(999,nfd * sizeof(struct pollfd)); |
213 | struct pollfd *fds = (struct pollfd *)SvPVX(tmpsv); |
214 | int i,j,ret; |
215 | for(i=1, j=0 ; j < nfd ; j++) { |
216 | fds[j].fd = SvIV(ST(i)); |
217 | i++; |
218 | fds[j].events = SvIV(ST(i)); |
219 | i++; |
220 | fds[j].revents = 0; |
221 | } |
222 | if((ret = poll(fds,nfd,timeout)) >= 0) { |
223 | for(i=1, j=0 ; j < nfd ; j++) { |
224 | sv_setiv(ST(i), fds[j].fd); i++; |
225 | sv_setiv(ST(i), fds[j].revents); i++; |
226 | } |
227 | } |
228 | SvREFCNT_dec(tmpsv); |
229 | XSRETURN_IV(ret); |
230 | #else |
231 | not_here("IO::Poll::poll"); |
232 | #endif |
233 | } |
234 | |
235 | MODULE = IO PACKAGE = IO::Handle PREFIX = io_ |
236 | |
237 | void |
238 | io_blocking(handle,blk=-1) |
239 | InputStream handle |
240 | int blk |
241 | PROTOTYPE: $;$ |
242 | CODE: |
243 | { |
244 | int ret = io_blocking(handle, items == 1 ? -1 : blk ? 1 : 0); |
245 | if(ret >= 0) |
246 | XSRETURN_IV(ret); |
247 | else |
248 | XSRETURN_UNDEF; |
249 | } |
250 | |
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251 | MODULE = IO PACKAGE = IO::Handle PREFIX = f |
252 | |
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253 | |
254 | int |
255 | ungetc(handle, c) |
256 | InputStream handle |
257 | int c |
258 | CODE: |
259 | if (handle) |
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260 | #ifdef PerlIO |
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261 | RETVAL = PerlIO_ungetc(handle, c); |
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262 | #else |
263 | RETVAL = ungetc(c, handle); |
264 | #endif |
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265 | else { |
266 | RETVAL = -1; |
267 | errno = EINVAL; |
268 | } |
269 | OUTPUT: |
270 | RETVAL |
271 | |
272 | int |
273 | ferror(handle) |
274 | InputStream handle |
275 | CODE: |
276 | if (handle) |
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277 | #ifdef PerlIO |
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278 | RETVAL = PerlIO_error(handle); |
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279 | #else |
280 | RETVAL = ferror(handle); |
281 | #endif |
282 | else { |
283 | RETVAL = -1; |
284 | errno = EINVAL; |
285 | } |
286 | OUTPUT: |
287 | RETVAL |
288 | |
289 | int |
290 | clearerr(handle) |
291 | InputStream handle |
292 | CODE: |
293 | if (handle) { |
294 | #ifdef PerlIO |
295 | PerlIO_clearerr(handle); |
296 | #else |
297 | clearerr(handle); |
298 | #endif |
299 | RETVAL = 0; |
300 | } |
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301 | else { |
302 | RETVAL = -1; |
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303 | errno = EINVAL; |
304 | } |
305 | OUTPUT: |
306 | RETVAL |
307 | |
308 | int |
309 | untaint(handle) |
310 | SV * handle |
311 | CODE: |
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312 | #ifdef IOf_UNTAINT |
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313 | IO * io; |
314 | io = sv_2io(handle); |
315 | if (io) { |
316 | IoFLAGS(io) |= IOf_UNTAINT; |
317 | RETVAL = 0; |
318 | } |
319 | else { |
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320 | #endif |
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321 | RETVAL = -1; |
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322 | errno = EINVAL; |
7a4c00b4 |
323 | #ifdef IOf_UNTAINT |
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324 | } |
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325 | #endif |
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326 | OUTPUT: |
327 | RETVAL |
328 | |
329 | SysRet |
330 | fflush(handle) |
331 | OutputStream handle |
332 | CODE: |
333 | if (handle) |
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334 | #ifdef PerlIO |
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335 | RETVAL = PerlIO_flush(handle); |
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336 | #else |
337 | RETVAL = Fflush(handle); |
338 | #endif |
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339 | else { |
340 | RETVAL = -1; |
341 | errno = EINVAL; |
342 | } |
343 | OUTPUT: |
344 | RETVAL |
345 | |
346 | void |
347 | setbuf(handle, buf) |
348 | OutputStream handle |
349 | char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), BUFSIZ) : 0; |
350 | CODE: |
351 | if (handle) |
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352 | #ifdef PERLIO_IS_STDIO |
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353 | setbuf(handle, buf); |
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354 | #else |
355 | not_here("IO::Handle::setbuf"); |
356 | #endif |
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357 | |
358 | SysRet |
359 | setvbuf(handle, buf, type, size) |
360 | OutputStream handle |
361 | char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), SvIV(ST(3))) : 0; |
362 | int type |
363 | int size |
364 | CODE: |
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365 | #if defined(PERLIO_IS_STDIO) && defined(_IOFBF) && defined(HAS_SETVBUF) |
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366 | if (!handle) /* Try input stream. */ |
367 | handle = IoIFP(sv_2io(ST(0))); |
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368 | if (handle) |
369 | RETVAL = setvbuf(handle, buf, type, size); |
370 | else { |
371 | RETVAL = -1; |
372 | errno = EINVAL; |
373 | } |
374 | #else |
61839fa9 |
375 | RETVAL = (SysRet) not_here("IO::Handle::setvbuf"); |
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376 | #endif |
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377 | OUTPUT: |
378 | RETVAL |
379 | |
380 | |
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381 | SysRet |
382 | fsync(handle) |
383 | OutputStream handle |
384 | CODE: |
385 | #ifdef HAS_FSYNC |
386 | if(handle) |
387 | RETVAL = fsync(PerlIO_fileno(handle)); |
388 | else { |
389 | RETVAL = -1; |
390 | errno = EINVAL; |
391 | } |
392 | #else |
393 | RETVAL = (SysRet) not_here("IO::Handle::sync"); |
394 | #endif |
395 | OUTPUT: |
396 | RETVAL |
397 | |
398 | |
399 | BOOT: |
400 | { |
401 | HV *stash; |
402 | /* |
403 | * constant subs for IO::Poll |
404 | */ |
405 | stash = gv_stashpvn("IO::Poll", 8, TRUE); |
406 | #ifdef POLLIN |
407 | newCONSTSUB(stash,"POLLIN",newSViv(POLLIN)); |
408 | #endif |
409 | #ifdef POLLPRI |
410 | newCONSTSUB(stash,"POLLPRI", newSViv(POLLPRI)); |
411 | #endif |
412 | #ifdef POLLOUT |
413 | newCONSTSUB(stash,"POLLOUT", newSViv(POLLOUT)); |
414 | #endif |
415 | #ifdef POLLRDNORM |
416 | newCONSTSUB(stash,"POLLRDNORM", newSViv(POLLRDNORM)); |
417 | #endif |
418 | #ifdef POLLWRNORM |
419 | newCONSTSUB(stash,"POLLWRNORM", newSViv(POLLWRNORM)); |
420 | #endif |
421 | #ifdef POLLRDBAND |
422 | newCONSTSUB(stash,"POLLRDBAND", newSViv(POLLRDBAND)); |
423 | #endif |
424 | #ifdef POLLWRBAND |
425 | newCONSTSUB(stash,"POLLWRBAND", newSViv(POLLWRBAND)); |
426 | #endif |
427 | #ifdef POLLNORM |
428 | newCONSTSUB(stash,"POLLNORM", newSViv(POLLNORM)); |
429 | #endif |
430 | #ifdef POLLERR |
431 | newCONSTSUB(stash,"POLLERR", newSViv(POLLERR)); |
432 | #endif |
433 | #ifdef POLLHUP |
434 | newCONSTSUB(stash,"POLLHUP", newSViv(POLLHUP)); |
435 | #endif |
436 | #ifdef POLLNVAL |
437 | newCONSTSUB(stash,"POLLNVAL", newSViv(POLLNVAL)); |
438 | #endif |
439 | /* |
440 | * constant subs for IO::Handle |
441 | */ |
442 | stash = gv_stashpvn("IO::Handle", 10, TRUE); |
443 | #ifdef _IOFBF |
444 | newCONSTSUB(stash,"_IOFBF", newSViv(_IOFBF)); |
445 | #endif |
446 | #ifdef _IOLBF |
447 | newCONSTSUB(stash,"_IOLBF", newSViv(_IOLBF)); |
448 | #endif |
449 | #ifdef _IONBF |
450 | newCONSTSUB(stash,"_IONBF", newSViv(_IONBF)); |
451 | #endif |
452 | #ifdef SEEK_SET |
453 | newCONSTSUB(stash,"SEEK_SET", newSViv(SEEK_SET)); |
454 | #endif |
455 | #ifdef SEEK_CUR |
456 | newCONSTSUB(stash,"SEEK_CUR", newSViv(SEEK_CUR)); |
457 | #endif |
458 | #ifdef SEEK_END |
459 | newCONSTSUB(stash,"SEEK_END", newSViv(SEEK_END)); |
460 | #endif |
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461 | } |