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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.2 by root, Sun Jul 10 18:16:49 2005 UTC vs.
Revision 1.147 by root, Mon Jun 15 05:34:49 2009 UTC

1#define PERL_NO_GET_CONTEXT 1#include "libeio/xthread.h"
2
3#include <errno.h>
2 4
3#include "EXTERN.h" 5#include "EXTERN.h"
4#include "perl.h" 6#include "perl.h"
5#include "XSUB.h" 7#include "XSUB.h"
6 8
9#include <stddef.h>
10#include <stdlib.h>
11#include <errno.h>
7#include <sys/types.h> 12#include <sys/types.h>
8#include <sys/stat.h> 13#include <sys/stat.h>
9#include <unistd.h> 14#include <limits.h>
10#include <fcntl.h> 15#include <fcntl.h>
11#include <signal.h>
12#include <sched.h> 16#include <sched.h>
13#include <endian.h>
14 17
15#include <pthread.h> 18/* perl namespace pollution */
16#include <sys/syscall.h> 19#undef VERSION
17 20
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 21#ifdef _WIN32
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
21 22
22#if __i386 || __amd64 23# define EIO_STRUCT_DIRENT Direntry_t
23# define STACKSIZE ( 256 * sizeof (long)) 24# undef malloc
24#elif __ia64 25# undef free
25# define STACKSIZE (8192 * sizeof (long)) 26
27// perl overrides all those nice win32 functions
28# undef open
29# undef read
30# undef write
31# undef send
32# undef recv
33# undef stat
34# undef fstat
35# define lstat stat
36# undef truncate
37# undef ftruncate
38# undef open
39# undef close
40# undef unlink
41# undef rmdir
42# undef rename
43# undef lseek
44
45# define chown(a,b,c) (errno = ENOSYS, -1)
46# define fchown(a,b,c) (errno = ENOSYS, -1)
47# define fchmod(a,b) (errno = ENOSYS, -1)
48# define symlink(a,b) (errno = ENOSYS, -1)
49# define readlink(a,b,c) (errno = ENOSYS, -1)
50# define mknod(a,b,c) (errno = ENOSYS, -1)
51# define truncate(a,b) (errno = ENOSYS, -1)
52# define ftruncate(fd,o) chsize ((fd), (o))
53# define fsync(fd) _commit (fd)
54# define opendir(fd) (errno = ENOSYS, 0)
55# define readdir(fd) (errno = ENOSYS, -1)
56# define closedir(fd) (errno = ENOSYS, -1)
57# define mkdir(a,b) mkdir (a)
58
26#else 59#else
27# define STACKSIZE ( 512 * sizeof (long)) 60
61# include <sys/time.h>
62# include <sys/select.h>
63# include <unistd.h>
64# include <utime.h>
65# include <signal.h>
66# define EIO_STRUCT_DIRENT struct dirent
67
28#endif 68#endif
29 69
70/* perl stupidly overrides readdir and maybe others */
71/* with thread-unsafe versions, imagine that :( */
72#undef readdir
73#undef opendir
74#undef closedir
75
76#define EIO_STRUCT_STAT Stat_t
77
78/* use NV for 32 bit perls as it allows larger offsets */
79#if IVSIZE >= 8
80# define SvVAL64 SvIV
81#else
82# define SvVAL64 SvNV
83#endif
84
85/*****************************************************************************/
86
87#if __GNUC__ >= 3
88# define expect(expr,value) __builtin_expect ((expr),(value))
89#else
90# define expect(expr,value) (expr)
91#endif
92
93#define expect_false(expr) expect ((expr) != 0, 0)
94#define expect_true(expr) expect ((expr) != 0, 1)
95
96/*****************************************************************************/
97
98static HV *stash;
99typedef SV SV8; /* byte-sv, used for argument-checking */
100
101#define AIO_REQ_KLASS "IO::AIO::REQ"
102#define AIO_GRP_KLASS "IO::AIO::GRP"
103
104#define EIO_REQ_MEMBERS \
105 SV *callback; \
106 SV *sv1, *sv2; \
107 STRLEN stroffset; \
108 SV *self;
109
110#define EIO_NO_WRAPPERS 1
111
112#include "libeio/eio.h"
113
114static int req_invoke (eio_req *req);
115#define EIO_FINISH(req) req_invoke (req)
116static void req_destroy (eio_req *grp);
117#define EIO_DESTROY(req) req_destroy (req)
118
30enum { 119enum {
31 REQ_QUIT, 120 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
32 REQ_OPEN, REQ_CLOSE,
33 REQ_READ, REQ_WRITE, REQ_READAHEAD,
34 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
35 REQ_FSYNC, REQ_FDATASYNC,
36}; 121};
37 122
38typedef struct aio_cb { 123#include "libeio/eio.c"
39 struct aio_cb *next;
40 124
41 int type;
42
43 int fd;
44 off_t offset;
45 size_t length;
46 ssize_t result;
47 mode_t mode; /* open */
48 int errorno;
49 SV *data, *callback;
50 void *dataptr;
51 STRLEN dataoffset;
52
53 Stat_t *statdata;
54} aio_cb;
55
56typedef aio_cb *aio_req; 125typedef eio_req *aio_req;
126typedef eio_req *aio_req_ornot;
57 127
58static int started; 128static SV *on_next_submit;
59static int nreqs; 129static int next_pri = EIO_PRI_DEFAULT;
60static int reqpipe[2], respipe[2]; 130static int max_outstanding;
61 131
62static aio_req qs, qe; /* queue start, queue end */ 132static int respipe_osf [2], respipe [2] = { -1, -1 };
63 133
64static void *aio_proc(void *arg); 134static void req_destroy (aio_req req);
135static void req_cancel (aio_req req);
65 136
66static void 137static void want_poll (void)
67start_thread (void)
68{ 138{
69 sigset_t fullsigset, oldsigset; 139 /* write a dummy byte to the pipe so fh becomes ready */
70 pthread_t tid; 140 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
71 pthread_attr_t attr;
72
73 pthread_attr_init (&attr);
74 pthread_attr_setstacksize (&attr, STACKSIZE);
75 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
76
77 sigfillset (&fullsigset);
78 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
79
80 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
81 started++;
82
83 sigprocmask (SIG_SETMASK, &oldsigset, 0);
84} 141}
85 142
86static void 143static void done_poll (void)
87send_reqs (void)
88{ 144{
89 /* this write is atomic */ 145 /* read any signals sent by the worker threads */
90 while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs) 146 char buf [4];
91 { 147 while (respipe_read (respipe [0], buf, 4) == 4)
92 qs = qs->next; 148 ;
93 if (!qs) qe = 0;
94 }
95} 149}
96 150
97static void 151/* must be called at most once */
98send_req (aio_req req) 152static SV *req_sv (aio_req req, const char *klass)
99{ 153{
100 nreqs++; 154 if (!req->self)
101 req->next = 0;
102
103 if (qe)
104 { 155 {
105 qe->next = req; 156 req->self = (SV *)newHV ();
106 qe = req; 157 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
107 } 158 }
108 else
109 qe = qs = req;
110 159
111 send_reqs (); 160 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
112} 161}
113 162
114static void 163static aio_req SvAIO_REQ (SV *sv)
115end_thread (void)
116{ 164{
117 aio_req req; 165 MAGIC *mg;
118 New (0, req, 1, aio_cb);
119 req->type = REQ_QUIT;
120 166
121 send_req (req); 167 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
122} 168 croak ("object of class " AIO_REQ_KLASS " expected");
123 169
124static void 170 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
125read_write (pTHX_
126 int dowrite, int fd, off_t offset, size_t length,
127 SV *data, STRLEN dataoffset, SV *callback)
128{
129 aio_req req;
130 STRLEN svlen;
131 char *svptr = SvPV (data, svlen);
132 171
133 SvUPGRADE (data, SVt_PV); 172 return mg ? (aio_req)mg->mg_ptr : 0;
134 SvPOK_on (data); 173}
135 174
136 if (dataoffset < 0) 175static void aio_grp_feed (aio_req grp)
137 dataoffset += svlen; 176{
138 177 if (grp->sv2 && SvOK (grp->sv2))
139 if (dataoffset < 0 || dataoffset > svlen)
140 croak ("data offset outside of string");
141
142 if (dowrite)
143 { 178 {
144 /* write: check length and adjust. */ 179 dSP;
145 if (length < 0 || length + dataoffset > svlen) 180
146 length = svlen - dataoffset; 181 ENTER;
182 SAVETMPS;
183 PUSHMARK (SP);
184 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
185 PUTBACK;
186 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
187 SPAGAIN;
188 FREETMPS;
189 LEAVE;
147 } 190 }
148 else 191}
192
193static void req_submit (eio_req *req)
194{
195 eio_submit (req);
196
197 if (expect_false (on_next_submit))
149 { 198 {
150 /* read: grow scalar as necessary */ 199 dSP;
151 svptr = SvGROW (data, length + dataoffset); 200 SV *cb = sv_2mortal (on_next_submit);
201
202 on_next_submit = 0;
203
204 PUSHMARK (SP);
205 PUTBACK;
206 call_sv (cb, G_DISCARD | G_EVAL);
152 } 207 }
153
154 if (length < 0)
155 croak ("length must not be negative");
156
157 Newz (0, req, 1, aio_cb);
158
159 if (!req)
160 croak ("out of memory during aio_req allocation");
161
162 req->type = dowrite ? REQ_WRITE : REQ_READ;
163 req->fd = fd;
164 req->offset = offset;
165 req->length = length;
166 req->data = SvREFCNT_inc (data);
167 req->dataptr = (char *)svptr + dataoffset;
168 req->callback = SvREFCNT_inc (callback);
169
170 send_req (req);
171} 208}
172 209
173static void 210static int req_invoke (eio_req *req)
174poll_wait ()
175{
176 fd_set rfd;
177 FD_ZERO(&rfd);
178 FD_SET(respipe[0], &rfd);
179
180 select (respipe[0] + 1, &rfd, 0, 0, 0);
181}
182
183static int
184poll_cb (pTHX)
185{ 211{
186 dSP; 212 dSP;
187 int count = 0;
188 aio_req req;
189 213
190 while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 214 if (req->flags & FLAG_SV2_RO_OFF)
215 SvREADONLY_off (req->sv2);
216
217 if (!EIO_CANCELLED (req) && req->callback)
191 { 218 {
192 nreqs--; 219 ENTER;
220 SAVETMPS;
221 PUSHMARK (SP);
222 EXTEND (SP, 1);
193 223
194 if (req->type == REQ_QUIT) 224 switch (req->type)
195 started--;
196 else
197 { 225 {
198 int errorno = errno; 226 case EIO_READDIR:
199 errno = req->errorno;
200
201 if (req->type == REQ_READ)
202 SvCUR_set (req->data, req->dataoffset
203 + req->result > 0 ? req->result : 0);
204
205 if (req->data)
206 SvREFCNT_dec (req->data);
207
208 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
209 { 227 {
210 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 228 SV *rv = &PL_sv_undef;
211 PL_laststatval = req->result;
212 PL_statcache = *(req->statdata);
213 229
214 Safefree (req->statdata); 230 if (req->result >= 0)
231 {
232 int i;
233 char *names = (char *)req->ptr2;
234 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
235 AV *av = newAV ();
236
237 av_extend (av, req->result - 1);
238
239 for (i = 0; i < req->result; ++i)
240 {
241 if (req->int1 & EIO_READDIR_DENTS)
242 {
243 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
244
245 if (req->int1 & EIO_READDIR_CUSTOM2)
246 {
247 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
248 AV *avent = newAV ();
249
250 av_extend (avent, 2);
251
252 if (!sv_type [ent->type])
253 {
254 sv_type [ent->type] = newSViv (ent->type);
255 SvREADONLY_on (sv_type [ent->type]);
256 }
257
258 av_store (avent, 0, namesv);
259 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
260 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
261
262 av_store (av, i, newRV_noinc ((SV *)avent));
263 }
264 else
265 av_store (av, i, namesv);
266
267 ++ent;
268 }
269 else
270 {
271 SV *name = newSVpv (names, 0);
272 av_store (av, i, name);
273 names += SvCUR (name) + 1;
274 }
275 }
276
277 rv = sv_2mortal (newRV_noinc ((SV *)av));
278 }
279
280 PUSHs (rv);
281
282 if (req->int1 & EIO_READDIR_CUSTOM1)
283 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
215 } 284 }
285 break;
216 286
217 PUSHMARK (SP); 287 case EIO_OPEN:
218 XPUSHs (sv_2mortal (newSViv (req->result)));
219
220 if (req->type == REQ_OPEN)
221 { 288 {
222 /* convert fd to fh */ 289 /* convert fd to fh */
223 SV *fh; 290 SV *fh = &PL_sv_undef;
224 291
225 PUTBACK; 292 if (req->result >= 0)
226 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 293 {
227 SPAGAIN; 294 GV *gv = (GV *)sv_newmortal ();
295 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
296 char sym [64];
297 int symlen;
298
299 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
300 gv_init (gv, stash, sym, symlen, 0);
228 301
229 fh = POPs; 302 symlen = snprintf (
303 sym,
304 sizeof (sym),
305 "%s&=%d",
306 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
307 (int)req->result
308 );
230 309
231 PUSHMARK (SP); 310 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
311 fh = (SV *)gv;
312 }
313
232 XPUSHs (fh); 314 PUSHs (fh);
233 } 315 }
316 break;
234 317
235 PUTBACK; 318 case EIO_GROUP:
236 call_sv (req->callback, G_VOID | G_EVAL); 319 req->int1 = 2; /* mark group as finished */
237 SPAGAIN; 320
321 if (req->sv1)
322 {
323 int i;
324 AV *av = (AV *)req->sv1;
325
326 EXTEND (SP, AvFILL (av) + 1);
327 for (i = 0; i <= AvFILL (av); ++i)
328 PUSHs (*av_fetch (av, i, 0));
329 }
330 break;
331
332 case EIO_NOP:
333 case EIO_BUSY:
334 break;
335
336 case EIO_READLINK:
337 if (req->result > 0)
338 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
339 break;
340
341 case EIO_STAT:
342 case EIO_LSTAT:
343 case EIO_FSTAT:
344 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
345 PL_laststatval = req->result;
346 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
347 PUSHs (sv_2mortal (newSViv (req->result)));
348 break;
349
350 case EIO_READ:
238 351 {
239 if (req->callback) 352 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
240 SvREFCNT_dec (req->callback); 353 *SvEND (req->sv2) = 0;
241 354 SvPOK_only (req->sv2);
242 errno = errorno; 355 SvSETMAGIC (req->sv2);
243 count++; 356 PUSHs (sv_2mortal (newSViv (req->result)));
244 } 357 }
358 break;
245 359
246 Safefree (req);
247 }
248
249 if (qs)
250 send_reqs ();
251
252 return count;
253}
254
255static void *
256aio_proc (void *thr_arg)
257{
258 aio_req req;
259
260 /* then loop */
261 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
262 {
263 errno = 0; /* strictly unnecessary */
264
265 switch (req->type)
266 {
267 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;
268 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;
269#if SYS_readahead
270 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
271#else
272 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
273#endif
274
275 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
276 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
277 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
278
279 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
280 case REQ_CLOSE: req->result = close (req->fd); break;
281 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
282
283 case REQ_FSYNC: req->result = fsync (req->fd); break;
284 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
285
286 case REQ_QUIT: 360 case EIO_DUP2:
287 write (respipe[1], (void *)&req, sizeof (req)); 361 if (req->result > 0)
288 return 0; 362 req->result = 0;
363 /* FALLTHROUGH */
289 364
290 default: 365 default:
291 req->result = ENOSYS; 366 PUSHs (sv_2mortal (newSViv (req->result)));
292 break; 367 break;
293 } 368 }
294 369
295 req->errorno = errno; 370 errno = req->errorno;
296 write (respipe[1], (void *)&req, sizeof (req)); 371
372 PUTBACK;
373 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
374 SPAGAIN;
375
376 FREETMPS;
377 LEAVE;
378
379 PUTBACK;
297 } 380 }
298 381
382 return !!SvTRUE (ERRSV);
383}
384
385static void req_destroy (aio_req req)
386{
387 if (req->self)
388 {
389 sv_unmagic (req->self, PERL_MAGIC_ext);
390 SvREFCNT_dec (req->self);
391 }
392
393 SvREFCNT_dec (req->sv1);
394 SvREFCNT_dec (req->sv2);
395 SvREFCNT_dec (req->callback);
396
397 Safefree (req);
398}
399
400static void req_cancel_subs (aio_req grp)
401{
402 aio_req sub;
403
404 if (grp->type != EIO_GROUP)
405 return;
406
407 SvREFCNT_dec (grp->sv2);
408 grp->sv2 = 0;
409
410 eio_grp_cancel (grp);
411}
412
413#ifdef USE_SOCKETS_AS_HANDLES
414# define TO_SOCKET(x) (win32_get_osfhandle (x))
415#else
416# define TO_SOCKET(x) (x)
417#endif
418
419static void
420create_respipe (void)
421{
422 int old_readfd = respipe [0];
423
424 if (respipe [1] >= 0)
425 respipe_close (TO_SOCKET (respipe [1]));
426
427#ifdef _WIN32
428 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
429#else
430 if (pipe (respipe))
431#endif
432 croak ("unable to initialize result pipe");
433
434 if (old_readfd >= 0)
435 {
436 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
437 croak ("unable to initialize result pipe(2)");
438
439 respipe_close (respipe [0]);
440 respipe [0] = old_readfd;
441 }
442
443#ifdef _WIN32
444 int arg = 1;
445 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
446 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
447#else
448 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
449 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
450#endif
451 croak ("unable to initialize result pipe(3)");
452
453 respipe_osf [0] = TO_SOCKET (respipe [0]);
454 respipe_osf [1] = TO_SOCKET (respipe [1]);
455}
456
457static void poll_wait (void)
458{
459 fd_set rfd;
460
461 while (eio_nreqs ())
462 {
463 int size;
464
465 X_LOCK (reslock);
466 size = res_queue.size;
467 X_UNLOCK (reslock);
468
469 if (size)
470 return;
471
472 etp_maybe_start_thread ();
473
474 FD_ZERO (&rfd);
475 FD_SET (respipe [0], &rfd);
476
477 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
478 }
479}
480
481static int poll_cb (void)
482{
483 for (;;)
484 {
485 int res = eio_poll ();
486
487 if (res > 0)
488 croak (0);
489
490 if (!max_outstanding || max_outstanding > eio_nreqs ())
491 return res;
492
493 poll_wait ();
494 }
495}
496
497static void atfork_child (void)
498{
499 create_respipe ();
500}
501
502static SV *
503get_cb (SV *cb_sv)
504{
505 HV *st;
506 GV *gvp;
507 CV *cv;
508
509 if (!SvOK (cb_sv))
299 return 0; 510 return 0;
511
512 cv = sv_2cv (cb_sv, &st, &gvp, 0);
513
514 if (!cv)
515 croak ("IO::AIO callback must be undef or a CODE reference");
516
517 return (SV *)cv;
518}
519
520#define dREQ \
521 SV *cb_cv; \
522 aio_req req; \
523 int req_pri = next_pri; \
524 next_pri = EIO_PRI_DEFAULT; \
525 \
526 cb_cv = get_cb (callback); \
527 \
528 Newz (0, req, 1, eio_req); \
529 if (!req) \
530 croak ("out of memory during eio_req allocation"); \
531 \
532 req->callback = SvREFCNT_inc (cb_cv); \
533 req->pri = req_pri
534
535#define REQ_SEND \
536 PUTBACK; \
537 req_submit (req); \
538 SPAGAIN; \
539 \
540 if (GIMME_V != G_VOID) \
541 XPUSHs (req_sv (req, AIO_REQ_KLASS));
542
543static int
544extract_fd (SV *fh, int wr)
545{
546 int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
547
548 if (fd < 0)
549 croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
550
551 return fd;
300} 552}
301 553
302MODULE = IO::AIO PACKAGE = IO::AIO 554MODULE = IO::AIO PACKAGE = IO::AIO
303 555
556PROTOTYPES: ENABLE
557
304BOOT: 558BOOT:
305{ 559{
306 if (pipe (reqpipe) || pipe (respipe)) 560 static const struct {
307 croak ("unable to initialize request or result pipe"); 561 const char *name;
562 IV iv;
563 } *civ, const_iv[] = {
564# define const_iv(name, value) { # name, (IV) value },
565# define const_eio(name) { # name, (IV) EIO_ ## name },
566 const_iv (EXDEV , EXDEV)
567 const_iv (ENOSYS , ENOSYS)
568 const_iv (O_RDONLY, O_RDONLY)
569 const_iv (O_WRONLY, O_WRONLY)
570 const_iv (O_CREAT , O_CREAT)
571 const_iv (O_TRUNC , O_TRUNC)
572#ifndef _WIN32
573 const_iv (S_IFIFO , S_IFIFO)
574#endif
575 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
576 const_eio (SYNC_FILE_RANGE_WRITE)
577 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
308 578
309 if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) 579 const_eio (READDIR_DENTS)
310 croak ("cannot set result pipe to nonblocking mode"); 580 const_eio (READDIR_DIRS_FIRST)
581 const_eio (READDIR_STAT_ORDER)
582 const_eio (READDIR_FOUND_UNKNOWN)
311 583
312 if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) 584 const_eio (DT_UNKNOWN)
313 croak ("cannot set result pipe to nonblocking mode"); 585 const_eio (DT_FIFO)
314} 586 const_eio (DT_CHR)
587 const_eio (DT_DIR)
588 const_eio (DT_BLK)
589 const_eio (DT_REG)
590 const_eio (DT_LNK)
591 const_eio (DT_SOCK)
592 const_eio (DT_WHT)
593 };
315 594
595 stash = gv_stashpv ("IO::AIO", 1);
596
597 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
598 newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
599
600 create_respipe ();
601
602 if (eio_init (want_poll, done_poll) < 0)
603 croak ("IO::AIO: unable to initialise eio library");
604
605 /* atfork child called in fifo order, so before eio's handler */
606 X_THREAD_ATFORK (0, 0, atfork_child);
607}
608
316void 609void
317min_parallel(nthreads) 610max_poll_reqs (int nreqs)
318 int nthreads
319 PROTOTYPE: $ 611 PROTOTYPE: $
320 CODE: 612 CODE:
321 while (nthreads > started) 613 eio_set_max_poll_reqs (nreqs);
322 start_thread ();
323 614
324void 615void
325max_parallel(nthreads) 616max_poll_time (double nseconds)
326 int nthreads
327 PROTOTYPE: $ 617 PROTOTYPE: $
328 CODE: 618 CODE:
619 eio_set_max_poll_time (nseconds);
620
621void
622min_parallel (int nthreads)
623 PROTOTYPE: $
624 CODE:
625 eio_set_min_parallel (nthreads);
626
627void
628max_parallel (int nthreads)
629 PROTOTYPE: $
630 CODE:
631 eio_set_max_parallel (nthreads);
632
633void
634max_idle (int nthreads)
635 PROTOTYPE: $
636 CODE:
637 eio_set_max_idle (nthreads);
638
639void
640max_outstanding (int maxreqs)
641 PROTOTYPE: $
642 CODE:
643 max_outstanding = maxreqs;
644
645void
646aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
647 PROTOTYPE: $$$;$
648 PPCODE:
329{ 649{
330 int cur = started; 650 dREQ;
331 while (cur > nthreads) 651
332 { 652 req->type = EIO_OPEN;
333 end_thread (); 653 req->sv1 = newSVsv (pathname);
654 req->ptr1 = SvPVbyte_nolen (req->sv1);
655 req->int1 = flags;
656 req->int2 = mode;
657
658 REQ_SEND;
659}
660
661void
662aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
663 PROTOTYPE: $;$
664 ALIAS:
665 aio_fsync = EIO_FSYNC
666 aio_fdatasync = EIO_FDATASYNC
667 PPCODE:
668{
669 int fd = extract_fd (fh, 0);
670 dREQ;
671
672 req->type = ix;
673 req->sv1 = newSVsv (fh);
674 req->int1 = fd;
675
676 REQ_SEND (req);
677}
678
679void
680aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
681 PROTOTYPE: $$$$;$
682 PPCODE:
683{
684 int fd = extract_fd (fh, 0);
685 dREQ;
686
687 req->type = EIO_SYNC_FILE_RANGE;
688 req->sv1 = newSVsv (fh);
689 req->int1 = fd;
690 req->offs = SvVAL64 (offset);
691 req->size = SvVAL64 (nbytes);
692 req->int2 = flags;
693
694 REQ_SEND (req);
695}
696
697void
698aio_close (SV *fh, SV *callback=&PL_sv_undef)
699 PROTOTYPE: $;$
700 PPCODE:
701{
702 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
703 int fd = extract_fd (fh, 0);
704 dREQ;
705
706 if (close_pipe < 0)
707 {
708 int pipefd [2];
709
710 if (pipe (pipefd) < 0
711 || close (pipefd [1]) < 0
712 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
713 abort (); /*D*/
714
715 close_pipe = pipefd [0];
716 }
717
718 req->type = EIO_DUP2;
719 req->int1 = close_pipe;
720 req->sv2 = newSVsv (fh);
721 req->int2 = fd;
722
723 REQ_SEND (req);
724}
725
726void
727aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
728 ALIAS:
729 aio_read = EIO_READ
730 aio_write = EIO_WRITE
731 PROTOTYPE: $$$$$;$
732 PPCODE:
733{
734 STRLEN svlen;
735 int fd = extract_fd (fh, ix == EIO_WRITE);
736 char *svptr = SvPVbyte (data, svlen);
737 UV len = SvUV (length);
738
739 if (dataoffset < 0)
740 dataoffset += svlen;
741
742 if (dataoffset < 0 || dataoffset > svlen)
743 croak ("dataoffset outside of data scalar");
744
745 if (ix == EIO_WRITE)
746 {
747 /* write: check length and adjust. */
748 if (!SvOK (length) || len + dataoffset > svlen)
749 len = svlen - dataoffset;
750 }
751 else
752 {
753 /* read: check type and grow scalar as necessary */
754 SvUPGRADE (data, SVt_PV);
755 svptr = SvGROW (data, len + dataoffset + 1);
756 }
757
758 {
759 dREQ;
760
761 req->type = ix;
762 req->sv1 = newSVsv (fh);
763 req->int1 = fd;
764 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
765 req->size = len;
766 req->sv2 = SvREFCNT_inc (data);
767 req->ptr2 = (char *)svptr + dataoffset;
768 req->stroffset = dataoffset;
769
770 if (!SvREADONLY (data))
334 cur--; 771 {
772 SvREADONLY_on (data);
773 req->flags |= FLAG_SV2_RO_OFF;
335 } 774 }
336 775
337 while (started > nthreads) 776 REQ_SEND;
777 }
778}
779
780void
781aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
782 PROTOTYPE: $$;$
783 PPCODE:
784{
785 SV *data;
786 dREQ;
787
788 req->type = EIO_READLINK;
789 req->sv1 = newSVsv (path);
790 req->ptr1 = SvPVbyte_nolen (req->sv1);
791
792 REQ_SEND;
793}
794
795void
796aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
797 PROTOTYPE: $$$$;$
798 PPCODE:
799{
800 int ifd = extract_fd (in_fh , 0);
801 int ofd = extract_fd (out_fh, 0);
802 dREQ;
803
804 req->type = EIO_SENDFILE;
805 req->sv1 = newSVsv (out_fh);
806 req->int1 = ofd;
807 req->sv2 = newSVsv (in_fh);
808 req->int2 = ifd;
809 req->offs = SvVAL64 (in_offset);
810 req->size = length;
811
812 REQ_SEND;
813}
814
815void
816aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
817 PROTOTYPE: $$$;$
818 PPCODE:
819{
820 int fd = extract_fd (fh, 0);
821 dREQ;
822
823 req->type = EIO_READAHEAD;
824 req->sv1 = newSVsv (fh);
825 req->int1 = fd;
826 req->offs = SvVAL64 (offset);
827 req->size = length;
828
829 REQ_SEND;
830}
831
832void
833aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
834 ALIAS:
835 aio_stat = EIO_STAT
836 aio_lstat = EIO_LSTAT
837 PPCODE:
838{
839 dREQ;
840
841 req->sv1 = newSVsv (fh_or_path);
842
843 if (SvPOK (req->sv1))
844 {
845 req->type = ix;
846 req->ptr1 = SvPVbyte_nolen (req->sv1);
847 }
848 else
849 {
850 req->type = EIO_FSTAT;
851 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
852 }
853
854 REQ_SEND;
855}
856
857void
858aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
859 PPCODE:
860{
861 dREQ;
862
863 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
864 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
865 req->sv1 = newSVsv (fh_or_path);
866
867 if (SvPOK (req->sv1))
868 {
869 req->type = EIO_UTIME;
870 req->ptr1 = SvPVbyte_nolen (req->sv1);
871 }
872 else
873 {
874 req->type = EIO_FUTIME;
875 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
876 }
877
878 REQ_SEND;
879}
880
881void
882aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
883 PPCODE:
884{
885 dREQ;
886
887 req->sv1 = newSVsv (fh_or_path);
888 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
889
890 if (SvPOK (req->sv1))
891 {
892 req->type = EIO_TRUNCATE;
893 req->ptr1 = SvPVbyte_nolen (req->sv1);
894 }
895 else
896 {
897 req->type = EIO_FTRUNCATE;
898 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
899 }
900
901 REQ_SEND;
902}
903
904void
905aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
906 ALIAS:
907 aio_chmod = EIO_CHMOD
908 aio_mkdir = EIO_MKDIR
909 PPCODE:
910{
911 dREQ;
912
913 req->int2 = mode;
914 req->sv1 = newSVsv (fh_or_path);
915
916 if (SvPOK (req->sv1))
917 {
918 req->type = ix;
919 req->ptr1 = SvPVbyte_nolen (req->sv1);
920 }
921 else
922 {
923 req->type = EIO_FCHMOD;
924 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
925 }
926
927 REQ_SEND;
928}
929
930void
931aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
932 PPCODE:
933{
934 dREQ;
935
936 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
937 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
938 req->sv1 = newSVsv (fh_or_path);
939
940 if (SvPOK (req->sv1))
941 {
942 req->type = EIO_CHOWN;
943 req->ptr1 = SvPVbyte_nolen (req->sv1);
944 }
945 else
946 {
947 req->type = EIO_FCHOWN;
948 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
949 }
950
951 REQ_SEND;
952}
953
954void
955aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
956 PPCODE:
957{
958 dREQ;
959
960 req->type = EIO_READDIR;
961 req->sv1 = newSVsv (pathname);
962 req->ptr1 = SvPVbyte_nolen (req->sv1);
963 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
964
965 if (flags & EIO_READDIR_DENTS)
966 req->int1 |= EIO_READDIR_CUSTOM2;
967
968 REQ_SEND;
969}
970
971void
972aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
973 ALIAS:
974 aio_unlink = EIO_UNLINK
975 aio_rmdir = EIO_RMDIR
976 aio_readdir = EIO_READDIR
977 PPCODE:
978{
979 dREQ;
980
981 req->type = ix;
982 req->sv1 = newSVsv (pathname);
983 req->ptr1 = SvPVbyte_nolen (req->sv1);
984
985 REQ_SEND;
986}
987
988void
989aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
990 ALIAS:
991 aio_link = EIO_LINK
992 aio_symlink = EIO_SYMLINK
993 aio_rename = EIO_RENAME
994 PPCODE:
995{
996 dREQ;
997
998 req->type = ix;
999 req->sv1 = newSVsv (oldpath);
1000 req->ptr1 = SvPVbyte_nolen (req->sv1);
1001 req->sv2 = newSVsv (newpath);
1002 req->ptr2 = SvPVbyte_nolen (req->sv2);
1003
1004 REQ_SEND;
1005}
1006
1007void
1008aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1009 PPCODE:
1010{
1011 dREQ;
1012
1013 req->type = EIO_MKNOD;
1014 req->sv1 = newSVsv (pathname);
1015 req->ptr1 = SvPVbyte_nolen (req->sv1);
1016 req->int2 = (mode_t)mode;
1017 req->offs = dev;
1018
1019 REQ_SEND;
1020}
1021
1022void
1023aio_busy (double delay, SV *callback=&PL_sv_undef)
1024 PPCODE:
1025{
1026 dREQ;
1027
1028 req->type = EIO_BUSY;
1029 req->nv1 = delay < 0. ? 0. : delay;
1030
1031 REQ_SEND;
1032}
1033
1034void
1035aio_group (SV *callback=&PL_sv_undef)
1036 PROTOTYPE: ;$
1037 PPCODE:
1038{
1039 dREQ;
1040
1041 req->type = EIO_GROUP;
1042
1043 req_submit (req);
1044 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1045}
1046
1047void
1048aio_nop (SV *callback=&PL_sv_undef)
1049 ALIAS:
1050 aio_nop = EIO_NOP
1051 aio_sync = EIO_SYNC
1052 PPCODE:
1053{
1054 dREQ;
1055
1056 req->type = ix;
1057
1058 REQ_SEND;
1059}
1060
1061int
1062aioreq_pri (int pri = 0)
1063 PROTOTYPE: ;$
1064 CODE:
1065 RETVAL = next_pri;
1066 if (items > 0)
1067 {
1068 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1069 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1070 next_pri = pri;
1071 }
1072 OUTPUT:
1073 RETVAL
1074
1075void
1076aioreq_nice (int nice = 0)
1077 CODE:
1078 nice = next_pri - nice;
1079 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1080 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1081 next_pri = nice;
1082
1083void
1084flush ()
1085 PROTOTYPE:
1086 CODE:
1087 while (eio_nreqs ())
338 { 1088 {
339 poll_wait (); 1089 poll_wait ();
340 poll_cb (aTHX); 1090 poll_cb ();
341 }
342}
343
344void
345aio_open(pathname,flags,mode,callback)
346 SV * pathname
347 int flags
348 int mode
349 SV * callback
350 PROTOTYPE: $$$$
351 CODE:
352{
353 aio_req req;
354
355 Newz (0, req, 1, aio_cb);
356
357 if (!req)
358 croak ("out of memory during aio_req allocation");
359
360 req->type = REQ_OPEN;
361 req->data = newSVsv (pathname);
362 req->dataptr = SvPV_nolen (req->data);
363 req->fd = flags;
364 req->mode = mode;
365 req->callback = SvREFCNT_inc (callback);
366
367 send_req (req);
368}
369
370void
371aio_close(fh,callback)
372 InputStream fh
373 SV * callback
374 PROTOTYPE: $$
375 ALIAS:
376 aio_close = REQ_CLOSE
377 aio_fsync = REQ_FSYNC
378 aio_fdatasync = REQ_FDATASYNC
379 CODE:
380{
381 aio_req req;
382
383 Newz (0, req, 1, aio_cb);
384
385 if (!req)
386 croak ("out of memory during aio_req allocation");
387
388 req->type = ix;
389 req->fd = PerlIO_fileno (fh);
390 req->callback = SvREFCNT_inc (callback);
391
392 send_req (req);
393}
394
395void
396aio_read(fh,offset,length,data,dataoffset,callback)
397 InputStream fh
398 UV offset
399 IV length
400 SV * data
401 IV dataoffset
402 SV * callback
403 PROTOTYPE: $$$$$$
404 CODE:
405 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
406
407void
408aio_write(fh,offset,length,data,dataoffset,callback)
409 OutputStream fh
410 UV offset
411 IV length
412 SV * data
413 IV dataoffset
414 SV * callback
415 PROTOTYPE: $$$$$$
416 CODE:
417 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
418
419void
420aio_readahead(fh,offset,length,callback)
421 InputStream fh
422 UV offset
423 IV length
424 SV * callback
425 PROTOTYPE: $$$$
426 CODE:
427{
428 aio_req req;
429
430 if (length < 0)
431 croak ("length must not be negative");
432
433 Newz (0, req, 1, aio_cb);
434
435 if (!req)
436 croak ("out of memory during aio_req allocation");
437
438 req->type = REQ_READAHEAD;
439 req->fd = PerlIO_fileno (fh);
440 req->offset = offset;
441 req->length = length;
442 req->callback = SvREFCNT_inc (callback);
443
444 send_req (req);
445}
446
447void
448aio_stat(fh_or_path,callback)
449 SV * fh_or_path
450 SV * callback
451 PROTOTYPE: $$
452 ALIAS:
453 aio_lstat = 1
454 CODE:
455{
456 aio_req req;
457
458 Newz (0, req, 1, aio_cb);
459
460 if (!req)
461 croak ("out of memory during aio_req allocation");
462
463 New (0, req->statdata, 1, Stat_t);
464
465 if (!req->statdata)
466 croak ("out of memory during aio_req->statdata allocation");
467
468 if (SvPOK (fh_or_path))
469 { 1091 }
470 req->type = ix ? REQ_LSTAT : REQ_STAT;
471 req->data = newSVsv (fh_or_path);
472 req->dataptr = SvPV_nolen (req->data);
473 }
474 else
475 {
476 req->type = REQ_FSTAT;
477 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
478 }
479 1092
480 req->callback = SvREFCNT_inc (callback); 1093int
481 1094poll()
482 send_req (req);
483}
484
485void
486aio_unlink(pathname,callback)
487 SV * pathname
488 SV * callback
489 PROTOTYPE: $$ 1095 PROTOTYPE:
490 CODE: 1096 CODE:
491{ 1097 poll_wait ();
492 aio_req req; 1098 RETVAL = poll_cb ();
493 1099 OUTPUT:
494 Newz (0, req, 1, aio_cb); 1100 RETVAL
495
496 if (!req)
497 croak ("out of memory during aio_req allocation");
498
499 req->type = REQ_UNLINK;
500 req->data = newSVsv (pathname);
501 req->dataptr = SvPV_nolen (req->data);
502 req->callback = SvREFCNT_inc (callback);
503
504 send_req (req);
505}
506 1101
507int 1102int
508poll_fileno() 1103poll_fileno()
509 PROTOTYPE: 1104 PROTOTYPE:
510 CODE: 1105 CODE:
511 RETVAL = respipe[0]; 1106 RETVAL = respipe [0];
512 OUTPUT: 1107 OUTPUT:
513 RETVAL 1108 RETVAL
514 1109
515int 1110int
516poll_cb(...) 1111poll_cb(...)
517 PROTOTYPE: 1112 PROTOTYPE:
518 CODE: 1113 CODE:
519 RETVAL = poll_cb (aTHX); 1114 RETVAL = poll_cb ();
520 OUTPUT: 1115 OUTPUT:
521 RETVAL 1116 RETVAL
522 1117
523void 1118void
524poll_wait() 1119poll_wait()
… …
528 1123
529int 1124int
530nreqs() 1125nreqs()
531 PROTOTYPE: 1126 PROTOTYPE:
532 CODE: 1127 CODE:
533 RETVAL = nreqs; 1128 RETVAL = eio_nreqs ();
534 OUTPUT: 1129 OUTPUT:
535 RETVAL 1130 RETVAL
536 1131
1132int
1133nready()
1134 PROTOTYPE:
1135 CODE:
1136 RETVAL = eio_nready ();
1137 OUTPUT:
1138 RETVAL
1139
1140int
1141npending()
1142 PROTOTYPE:
1143 CODE:
1144 RETVAL = eio_npending ();
1145 OUTPUT:
1146 RETVAL
1147
1148int
1149nthreads()
1150 PROTOTYPE:
1151 CODE:
1152 RETVAL = eio_nthreads ();
1153 OUTPUT:
1154 RETVAL
1155
1156void _on_next_submit (SV *cb)
1157 CODE:
1158 SvREFCNT_dec (on_next_submit);
1159 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1160
1161PROTOTYPES: DISABLE
1162
1163MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1164
1165void
1166cancel (aio_req_ornot req)
1167 CODE:
1168 eio_cancel (req);
1169
1170void
1171cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1172 PPCODE:
1173{
1174 if (GIMME_V != G_VOID)
1175 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1176
1177 if (items > 1)
1178 {
1179 SV *cb_cv = get_cb (callback);
1180
1181 SvREFCNT_dec (req->callback);
1182 req->callback = SvREFCNT_inc (cb_cv);
1183 }
1184}
1185
1186MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1187
1188void
1189add (aio_req grp, ...)
1190 PPCODE:
1191{
1192 int i;
1193
1194 if (grp->int1 == 2)
1195 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1196
1197 for (i = 1; i < items; ++i )
1198 {
1199 aio_req req;
1200
1201 if (GIMME_V != G_VOID)
1202 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1203
1204 req = SvAIO_REQ (ST (i));
1205
1206 if (req)
1207 eio_grp_add (grp, req);
1208 }
1209}
1210
1211void
1212cancel_subs (aio_req_ornot req)
1213 CODE:
1214 req_cancel_subs (req);
1215
1216void
1217result (aio_req grp, ...)
1218 CODE:
1219{
1220 int i;
1221 AV *av;
1222
1223 grp->errorno = errno;
1224
1225 av = newAV ();
1226 av_extend (av, items - 1);
1227
1228 for (i = 1; i < items; ++i )
1229 av_push (av, newSVsv (ST (i)));
1230
1231 SvREFCNT_dec (grp->sv1);
1232 grp->sv1 = (SV *)av;
1233}
1234
1235void
1236errno (aio_req grp, int errorno = errno)
1237 CODE:
1238 grp->errorno = errorno;
1239
1240void
1241limit (aio_req grp, int limit)
1242 CODE:
1243 eio_grp_limit (grp, limit);
1244
1245void
1246feed (aio_req grp, SV *callback=&PL_sv_undef)
1247 CODE:
1248{
1249 SvREFCNT_dec (grp->sv2);
1250 grp->sv2 = newSVsv (callback);
1251 grp->feed = aio_grp_feed;
1252
1253 if (grp->int2 <= 0)
1254 grp->int2 = 2;
1255
1256 eio_grp_limit (grp, grp->int2);
1257}
1258

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