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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.34 by root, Tue Aug 23 00:03:14 2005 UTC vs.
Revision 1.115 by root, Sat May 10 18:06:41 2008 UTC

1#define _REENTRANT 1 1#include "libeio/xthread.h"
2
2#include <errno.h> 3#include <errno.h>
3 4
4#include "EXTERN.h" 5#include "EXTERN.h"
5#include "perl.h" 6#include "perl.h"
6#include "XSUB.h" 7#include "XSUB.h"
7 8
8#include "autoconf/config.h"
9
10#include <pthread.h> 9#include <stddef.h>
11 10#include <stdlib.h>
11#include <errno.h>
12#include <sys/types.h> 12#include <sys/types.h>
13#include <sys/stat.h> 13#include <sys/stat.h>
14
15#include <unistd.h> 14#include <limits.h>
16#include <fcntl.h> 15#include <fcntl.h>
17#include <signal.h>
18#include <sched.h> 16#include <sched.h>
19 17
20#if HAVE_SENDFILE 18#ifdef _WIN32
21# if __linux 19
22# include <sys/sendfile.h> 20# define EIO_STRUCT_DIRENT Direntry_t
23# elif __freebsd 21# undef malloc
24# include <sys/socket.h> 22# undef free
25# include <sys/uio.h> 23
26# elif __hpux 24// perl overrides all those nice win32 functions
27# include <sys/socket.h> 25# undef open
26# undef read
27# undef write
28# undef send
29# undef recv
30# undef stat
31# undef fstat
32# define lstat stat
33# undef truncate
34# undef ftruncate
35# undef open
36# undef close
37# undef unlink
38# undef rmdir
39# undef rename
40# undef lseek
41
42# define chown(a,b,c) (errno = ENOSYS, -1)
43# define fchown(a,b,c) (errno = ENOSYS, -1)
44# define fchmod(a,b) (errno = ENOSYS, -1)
45# define symlink(a,b) (errno = ENOSYS, -1)
46# define readlink(a,b,c) (errno = ENOSYS, -1)
47# define mknod(a,b,c) (errno = ENOSYS, -1)
48# define truncate(a,b) (errno = ENOSYS, -1)
49# define ftruncate(fd,o) chsize ((fd), (o))
50# define fsync(fd) _commit (fd)
51# define opendir(fd) (errno = ENOSYS, 0)
52# define readdir(fd) (errno = ENOSYS, -1)
53# define closedir(fd) (errno = ENOSYS, -1)
54# define mkdir(a,b) mkdir (a)
55
28# else 56#else
29# error sendfile support requested but not available 57
30# endif 58# include <sys/time.h>
59# include <sys/select.h>
60# include <unistd.h>
61# include <utime.h>
62# include <signal.h>
63# define EIO_STRUCT_DIRENT struct dirent
64
31#endif 65#endif
32 66
33#if __ia64 67#define EIO_STRUCT_STAT Stat_t
34# define STACKSIZE 65536 68
69/* use NV for 32 bit perls as it allows larger offsets */
70#if IVSIZE >= 8
71# define SvVAL64 SvIV
35#else 72#else
36# define STACKSIZE 4096 73# define SvVAL64 SvNV
37#endif 74#endif
38 75
76static HV *stash;
77typedef SV SV8; /* byte-sv, used for argument-checking */
78
79#define AIO_REQ_KLASS "IO::AIO::REQ"
80#define AIO_GRP_KLASS "IO::AIO::GRP"
81
82#define EIO_COMMON \
83 SV *callback; \
84 SV *sv1, *sv2; \
85 STRLEN stroffset; \
86 SV *self
87
88#include "libeio/eio.h"
89
90static int req_invoke (eio_req *req);
91#define EIO_FINISH(req) req_invoke (req)
92static void aio_grp_feed (eio_req *grp);
93#define EIO_FEED(req) aio_grp_feed (req)
94static void req_destroy (eio_req *grp);
95#define EIO_DESTROY(req) req_destroy (req)
96
39enum { 97enum {
40 REQ_QUIT, 98 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
41 REQ_OPEN, REQ_CLOSE,
42 REQ_READ, REQ_WRITE, REQ_READAHEAD,
43 REQ_SENDFILE,
44 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
45 REQ_FSYNC, REQ_FDATASYNC,
46 REQ_UNLINK, REQ_RMDIR,
47 REQ_SYMLINK,
48}; 99};
49 100
50typedef struct aio_cb { 101#include "libeio/eio.c"
51 struct aio_cb *volatile next;
52 102
53 int type;
54
55 int fd, fd2;
56 off_t offset;
57 size_t length;
58 ssize_t result;
59 mode_t mode; /* open */
60 int errorno;
61 SV *data, *callback;
62 SV *fh, *fh2;
63 void *dataptr, *data2ptr;
64 STRLEN dataoffset;
65
66 Stat_t *statdata;
67} aio_cb;
68
69typedef aio_cb *aio_req; 103typedef eio_req *aio_req;
104typedef eio_req *aio_req_ornot;
70 105
71static int started, wanted; 106static unsigned int max_outstanding = 0x7fffffff;
72static volatile int nreqs;
73static int max_outstanding = 1<<30;
74static int respipe [2];
75 107
76static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 108static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
77static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
78static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
79 109
80static volatile aio_req reqs, reqe; /* queue start, queue end */ 110static int respipe_osf [2], respipe [2] = { -1, -1 };
81static volatile aio_req ress, rese; /* queue start, queue end */
82 111
112static void req_destroy (aio_req req);
83static void free_req (aio_req req) 113static void req_cancel (aio_req req);
84{
85 if (req->data)
86 SvREFCNT_dec (req->data);
87 114
115static void want_poll (void)
116{
117 /* write a dummy byte to the pipe so fh becomes ready */
118 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
119}
120
121static void done_poll (void)
122{
123 /* read any signals sent by the worker threads */
124 char buf [4];
125 while (respipe_read (respipe [0], buf, 4) == 4)
126 ;
127}
128
129/* must be called at most once */
130static SV *req_sv (aio_req req, const char *klass)
131{
88 if (req->fh) 132 if (!req->self)
89 SvREFCNT_dec (req->fh);
90
91 if (req->fh2)
92 SvREFCNT_dec (req->fh2);
93
94 if (req->statdata)
95 Safefree (req->statdata);
96
97 if (req->callback)
98 SvREFCNT_dec (req->callback);
99
100 Safefree (req);
101}
102
103static void
104poll_wait ()
105{
106 if (nreqs && !ress)
107 { 133 {
108 fd_set rfd; 134 req->self = (SV *)newHV ();
109 FD_ZERO(&rfd); 135 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
110 FD_SET(respipe [0], &rfd);
111
112 select (respipe [0] + 1, &rfd, 0, 0, 0);
113 } 136 }
114}
115 137
116static int 138 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
117poll_cb () 139}
140
141static aio_req SvAIO_REQ (SV *sv)
142{
143 MAGIC *mg;
144
145 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
146 croak ("object of class " AIO_REQ_KLASS " expected");
147
148 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
149
150 return mg ? (aio_req)mg->mg_ptr : 0;
151}
152
153static void aio_grp_feed (aio_req grp)
154{
155 if (grp->sv2 && SvOK (grp->sv2))
156 {
157 dSP;
158
159 ENTER;
160 SAVETMPS;
161 PUSHMARK (SP);
162 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
163 PUTBACK;
164 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
165 SPAGAIN;
166 FREETMPS;
167 LEAVE;
168 }
169}
170
171static int req_invoke (eio_req *req)
118{ 172{
119 dSP; 173 dSP;
120 int count = 0;
121 int do_croak = 0;
122 aio_req req;
123 174
124 for (;;) 175 if (req->flags & FLAG_SV2_RO_OFF)
176 SvREADONLY_off (req->sv2);
177
178 if (!EIO_CANCELLED (req) && SvOK (req->callback))
125 { 179 {
126 pthread_mutex_lock (&reslock); 180 ENTER;
127 req = ress; 181 SAVETMPS;
182 PUSHMARK (SP);
183 EXTEND (SP, 1);
128 184
129 if (req) 185 switch (req->type)
130 { 186 {
131 ress = req->next; 187 case EIO_READDIR:
132
133 if (!ress)
134 { 188 {
135 /* read any signals sent by the worker threads */ 189 SV *rv = &PL_sv_undef;
136 char buf [32]; 190
137 while (read (respipe [0], buf, 32) == 32) 191 if (req->result >= 0)
138 ; 192 {
193 int i;
194 char *buf = req->ptr2;
195 AV *av = newAV ();
139 196
140 rese = 0; 197 av_extend (av, req->result - 1);
198
199 for (i = 0; i < req->result; ++i)
200 {
201 SV *sv = newSVpv (buf, 0);
202
203 av_store (av, i, sv);
204 buf += SvCUR (sv) + 1;
205 }
206
207 rv = sv_2mortal (newRV_noinc ((SV *)av));
208 }
209
210 PUSHs (rv);
141 } 211 }
142 }
143
144 pthread_mutex_unlock (&reslock);
145
146 if (!req)
147 break; 212 break;
148 213
149 nreqs--; 214 case EIO_OPEN:
150
151 if (req->type == REQ_QUIT)
152 started--;
153 else
154 {
155 int errorno = errno;
156 errno = req->errorno;
157
158 if (req->type == REQ_READ)
159 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
160
161 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
162 SvREADONLY_off (req->data);
163
164 if (req->statdata)
165 {
166 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
167 PL_laststatval = req->result;
168 PL_statcache = *(req->statdata);
169 }
170
171 ENTER;
172 PUSHMARK (SP);
173 XPUSHs (sv_2mortal (newSViv (req->result)));
174
175 if (req->type == REQ_OPEN)
176 { 215 {
177 /* convert fd to fh */ 216 /* convert fd to fh */
178 SV *fh; 217 SV *fh = &PL_sv_undef;
179 218
180 PUTBACK; 219 if (req->result >= 0)
181 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 220 {
182 SPAGAIN; 221 GV *gv = (GV *)sv_newmortal ();
222 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
223 char sym [64];
224 int symlen;
225
226 symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
227 gv_init (gv, stash, sym, symlen, 0);
183 228
184 fh = SvREFCNT_inc (POPs); 229 symlen = snprintf (
230 sym,
231 sizeof (sym),
232 "%s&=%d",
233 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
234 req->result
235 );
185 236
237 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
238 fh = (SV *)gv;
239 }
240
186 PUSHMARK (SP); 241 PUSHs (fh);
187 XPUSHs (sv_2mortal (fh));
188 } 242 }
189
190 if (SvOK (req->callback))
191 {
192 PUTBACK;
193 call_sv (req->callback, G_VOID | G_EVAL);
194 SPAGAIN;
195
196 if (SvTRUE (ERRSV))
197 {
198 free_req (req);
199 croak (0);
200 }
201 }
202
203 LEAVE;
204
205 errno = errorno;
206 count++;
207 }
208
209 free_req (req);
210 }
211
212 return count;
213}
214
215static void *aio_proc(void *arg);
216
217static void
218start_thread (void)
219{
220 sigset_t fullsigset, oldsigset;
221 pthread_t tid;
222 pthread_attr_t attr;
223
224 pthread_attr_init (&attr);
225 pthread_attr_setstacksize (&attr, STACKSIZE);
226 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
227
228 sigfillset (&fullsigset);
229 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
230
231 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
232 started++;
233
234 sigprocmask (SIG_SETMASK, &oldsigset, 0);
235}
236
237static void
238send_req (aio_req req)
239{
240 while (started < wanted && nreqs >= started)
241 start_thread ();
242
243 nreqs++;
244
245 pthread_mutex_lock (&reqlock);
246
247 req->next = 0;
248
249 if (reqe)
250 {
251 reqe->next = req;
252 reqe = req;
253 }
254 else
255 reqe = reqs = req;
256
257 pthread_cond_signal (&reqwait);
258 pthread_mutex_unlock (&reqlock);
259
260 if (nreqs > max_outstanding)
261 for (;;)
262 {
263 poll_cb ();
264
265 if (nreqs <= max_outstanding)
266 break;
267
268 poll_wait ();
269 }
270}
271
272static void
273end_thread (void)
274{
275 aio_req req;
276 Newz (0, req, 1, aio_cb);
277 req->type = REQ_QUIT;
278
279 send_req (req);
280}
281
282static void min_parallel (int nthreads)
283{
284 if (wanted < nthreads)
285 wanted = nthreads;
286}
287
288static void max_parallel (int nthreads)
289{
290 int cur = started;
291
292 if (wanted > nthreads)
293 wanted = nthreads;
294
295 while (cur > wanted)
296 {
297 end_thread ();
298 cur--;
299 }
300
301 while (started > wanted)
302 {
303 poll_wait ();
304 poll_cb ();
305 }
306}
307
308static void create_pipe ()
309{
310 if (pipe (respipe))
311 croak ("unable to initialize result pipe");
312
313 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
314 croak ("cannot set result pipe to nonblocking mode");
315
316 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
317 croak ("cannot set result pipe to nonblocking mode");
318}
319
320static void atfork_prepare (void)
321{
322 pthread_mutex_lock (&reqlock);
323 pthread_mutex_lock (&reslock);
324}
325
326static void atfork_parent (void)
327{
328 pthread_mutex_unlock (&reslock);
329 pthread_mutex_unlock (&reqlock);
330}
331
332static void atfork_child (void)
333{
334 aio_req prv;
335
336 started = 0;
337
338 while (reqs)
339 {
340 prv = reqs;
341 reqs = prv->next;
342 free_req (prv);
343 }
344
345 reqs = reqe = 0;
346
347 while (ress)
348 {
349 prv = ress;
350 ress = prv->next;
351 free_req (prv);
352 }
353
354 ress = rese = 0;
355
356 close (respipe [0]);
357 close (respipe [1]);
358 create_pipe ();
359
360 atfork_parent ();
361}
362
363/*****************************************************************************/
364/* work around various missing functions */
365
366#if !HAVE_PREADWRITE
367# define pread aio_pread
368# define pwrite aio_pwrite
369
370/*
371 * make our pread/pwrite safe against themselves, but not against
372 * normal read/write by using a mutex. slows down execution a lot,
373 * but that's your problem, not mine.
374 */
375static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
376
377static ssize_t
378pread (int fd, void *buf, size_t count, off_t offset)
379{
380 ssize_t res;
381 off_t ooffset;
382
383 pthread_mutex_lock (&iolock);
384 ooffset = lseek (fd, 0, SEEK_CUR);
385 lseek (fd, offset, SEEK_SET);
386 res = read (fd, buf, count);
387 lseek (fd, ooffset, SEEK_SET);
388 pthread_mutex_unlock (&iolock);
389
390 return res;
391}
392
393static ssize_t
394pwrite (int fd, void *buf, size_t count, off_t offset)
395{
396 ssize_t res;
397 off_t ooffset;
398
399 pthread_mutex_lock (&iolock);
400 ooffset = lseek (fd, 0, SEEK_CUR);
401 lseek (fd, offset, SEEK_SET);
402 res = write (fd, buf, count);
403 lseek (fd, offset, SEEK_SET);
404 pthread_mutex_unlock (&iolock);
405
406 return res;
407}
408#endif
409
410#if !HAVE_FDATASYNC
411# define fdatasync fsync
412#endif
413
414#if !HAVE_READAHEAD
415# define readahead aio_readahead
416
417static char readahead_buf[4096];
418
419static ssize_t
420readahead (int fd, off_t offset, size_t count)
421{
422 while (count > 0)
423 {
424 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
425
426 pread (fd, readahead_buf, len, offset);
427 offset += len;
428 count -= len;
429 }
430
431 errno = 0;
432}
433#endif
434
435/* sendfile always needs emulation */
436static ssize_t
437sendfile_ (int ofd, int ifd, off_t offset, size_t count)
438{
439 ssize_t res;
440
441 if (!count)
442 return 0;
443
444#if __linux
445 res = sendfile (ofd, ifd, &offset, count);
446
447#elif __freebsd
448 /*
449 * Of course, the freebsd sendfile is a dire hack with no thoughts
450 * wasted on making it similar to other i/o functions.
451 */
452 {
453 off_t sbytes;
454 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
455
456 if (!res && errno == EAGAIN)
457 /* maybe on others, too, as usual, the manpage leaves you guessing */
458 res = sbytes;
459 }
460
461#elif __hpux
462 res = sendfile (ofd, ifd, offset, count, 0, 0);
463
464#else
465 res = -1;
466 errno = ENOSYS;
467#endif
468
469 if (res < 0 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK))
470 {
471 /* emulate sendfile. this is a major pain in the ass */
472 char *buf = malloc (4096);
473 res = 0;
474
475 for (;;)
476 {
477 ssize_t cnt;
478
479 cnt = pread (ifd, buf, 4096, offset);
480
481 if (cnt <= 0)
482 {
483 if (cnt && !res) res = -1;
484 break;
485 }
486
487 cnt = write (ofd, buf, cnt);
488
489 if (cnt <= 0)
490 {
491 if (cnt && !res) res = -1;
492 break;
493 }
494
495 offset += cnt;
496 res += cnt;
497 }
498
499 {
500 int errorno = errno;
501 free (buf);
502 errno = errorno;
503 }
504 }
505
506 return res;
507}
508
509/*****************************************************************************/
510
511static void *
512aio_proc (void *thr_arg)
513{
514 aio_req req;
515 int type;
516
517 do
518 {
519 pthread_mutex_lock (&reqlock);
520
521 for (;;)
522 {
523 req = reqs;
524
525 if (reqs)
526 {
527 reqs = reqs->next;
528 if (!reqs) reqe = 0;
529 }
530
531 if (req)
532 break; 243 break;
533 244
534 pthread_cond_wait (&reqwait, &reqlock); 245 case EIO_GROUP:
535 } 246 req->int1 = 2; /* mark group as finished */
536 247
537 pthread_mutex_unlock (&reqlock); 248 if (req->sv1)
538
539 errno = 0; /* strictly unnecessary */
540
541 type = req->type;
542
543 switch (type)
544 { 249 {
545 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 250 int i;
546 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 251 AV *av = (AV *)req->sv1;
547 252
548 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 253 EXTEND (SP, AvFILL (av) + 1);
549 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; 254 for (i = 0; i <= AvFILL (av); ++i)
550 255 PUSHs (*av_fetch (av, i, 0));
551 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 256 }
552 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
553 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
554
555 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
556 case REQ_CLOSE: req->result = close (req->fd); break;
557 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
558 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
559 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
560
561 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
562 case REQ_FSYNC: req->result = fsync (req->fd); break;
563
564 case REQ_QUIT:
565 break; 257 break;
566 258
259 case EIO_NOP:
260 case EIO_BUSY:
261 break;
262
263 case EIO_READLINK:
264 if (req->result > 0)
265 {
266 SvCUR_set (req->sv2, req->result);
267 *SvEND (req->sv2) = 0;
268 PUSHs (req->sv2);
269 }
270 break;
271
272 case EIO_STAT:
273 case EIO_LSTAT:
274 case EIO_FSTAT:
275 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
276 PL_laststatval = req->result;
277 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
278 PUSHs (sv_2mortal (newSViv (req->result)));
279 break;
280
281 case EIO_READ:
282 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
283 *SvEND (req->sv2) = 0;
284 PUSHs (sv_2mortal (newSViv (req->result)));
285 break;
286
287 case EIO_DUP2:
288 if (req->result > 0)
289 req->result = 0;
290 /* FALLTHROUGH */
291
567 default: 292 default:
568 req->result = ENOSYS; 293 PUSHs (sv_2mortal (newSViv (req->result)));
569 break; 294 break;
570 } 295 }
571 296
572 req->errorno = errno; 297 errno = req->errorno;
573 298
574 pthread_mutex_lock (&reslock); 299 PUTBACK;
300 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
301 SPAGAIN;
575 302
576 req->next = 0; 303 FREETMPS;
304 LEAVE;
577 305
578 if (rese) 306 PUTBACK;
579 {
580 rese->next = req;
581 rese = req;
582 }
583 else
584 {
585 rese = ress = req;
586
587 /* write a dummy byte to the pipe so fh becomes ready */
588 write (respipe [1], &respipe, 1);
589 }
590
591 pthread_mutex_unlock (&reslock);
592 } 307 }
593 while (type != REQ_QUIT);
594 308
309 return !!SvTRUE (ERRSV);
310}
311
312static void req_destroy (aio_req req)
313{
314 if (req->self)
315 {
316 sv_unmagic (req->self, PERL_MAGIC_ext);
317 SvREFCNT_dec (req->self);
318 }
319
320 SvREFCNT_dec (req->sv1);
321 SvREFCNT_dec (req->sv2);
322 SvREFCNT_dec (req->callback);
323
324 Safefree (req);
325}
326
327static void req_cancel_subs (aio_req grp)
328{
329 aio_req sub;
330
331 if (grp->type != EIO_GROUP)
332 return;
333
334 SvREFCNT_dec (grp->sv2);
335 grp->sv2 = 0;
336
337 eio_grp_cancel (grp);
338}
339
340#ifdef USE_SOCKETS_AS_HANDLES
341# define TO_SOCKET(x) (win32_get_osfhandle (x))
342#else
343# define TO_SOCKET(x) (x)
344#endif
345
346static void
347create_respipe (void)
348{
349 int old_readfd = respipe [0];
350
351 if (respipe [1] >= 0)
352 respipe_close (TO_SOCKET (respipe [1]));
353
354#ifdef _WIN32
355 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
356#else
357 if (pipe (respipe))
358#endif
359 croak ("unable to initialize result pipe");
360
361 if (old_readfd >= 0)
362 {
363 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
364 croak ("unable to initialize result pipe(2)");
365
366 respipe_close (respipe [0]);
367 respipe [0] = old_readfd;
368 }
369
370#ifdef _WIN32
371 int arg = 1;
372 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
373 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
374#else
375 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
376 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
377#endif
378 croak ("unable to initialize result pipe(3)");
379
380 respipe_osf [0] = TO_SOCKET (respipe [0]);
381 respipe_osf [1] = TO_SOCKET (respipe [1]);
382}
383
384static void poll_wait (void)
385{
386 fd_set rfd;
387
388 while (eio_nreqs ())
389 {
390 int size;
391
392 X_LOCK (reslock);
393 size = res_queue.size;
394 X_UNLOCK (reslock);
395
396 if (size)
397 return;
398
399 maybe_start_thread ();
400
401 FD_ZERO (&rfd);
402 FD_SET (respipe [0], &rfd);
403
404 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
405 }
406}
407
408static int poll_cb (void)
409{
410 int res = eio_poll ();
411
412 if (res > 0)
413 croak (0);
414
595 return 0; 415 return res;
596} 416}
597 417
598#define dREQ \ 418#define dREQ \
599 aio_req req; \ 419 aio_req req; \
420 int req_pri = next_pri; \
421 next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
600 \ 422 \
601 if (SvOK (callback) && !SvROK (callback)) \ 423 if (SvOK (callback) && !SvROK (callback)) \
602 croak ("clalback must be undef or of reference type"); \ 424 croak ("callback must be undef or of reference type"); \
603 \ 425 \
604 Newz (0, req, 1, aio_cb); \ 426 Newz (0, req, 1, eio_req); \
605 if (!req) \ 427 if (!req) \
606 croak ("out of memory during aio_req allocation"); \ 428 croak ("out of memory during eio_req allocation"); \
607 \ 429 \
608 req->callback = newSVsv (callback); 430 req->callback = newSVsv (callback); \
431 req->pri = req_pri
432
433#define REQ_SEND \
434 eio_submit (req); \
435 \
436 if (GIMME_V != G_VOID) \
437 XPUSHs (req_sv (req, AIO_REQ_KLASS));
609 438
610MODULE = IO::AIO PACKAGE = IO::AIO 439MODULE = IO::AIO PACKAGE = IO::AIO
611 440
612PROTOTYPES: ENABLE 441PROTOTYPES: ENABLE
613 442
614BOOT: 443BOOT:
615{ 444{
616 create_pipe (); 445 stash = gv_stashpv ("IO::AIO", 1);
617 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
618}
619 446
447 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
448 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
449 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
450 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
451 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
452#ifdef _WIN32
453 X_MUTEX_CHECK (wrklock);
454 X_MUTEX_CHECK (reslock);
455 X_MUTEX_CHECK (reqlock);
456 X_MUTEX_CHECK (reqwait);
457 X_MUTEX_CHECK (preadwritelock);
458 X_MUTEX_CHECK (readdirlock);
459
460 X_COND_CHECK (reqwait);
461#else
462 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
463#endif
464
465 create_respipe ();
466
467 if (eio_init (want_poll, done_poll) < 0)
468 croak ("IO::AIO: unable to initialise eio library");
469}
470
620void 471void
621min_parallel(nthreads) 472max_poll_reqs (int nreqs)
622 int nthreads
623 PROTOTYPE: $ 473 PROTOTYPE: $
474 CODE:
475 eio_set_max_poll_reqs (nreqs);
624 476
625void 477void
626max_parallel(nthreads) 478max_poll_time (double nseconds)
627 int nthreads
628 PROTOTYPE: $ 479 PROTOTYPE: $
629
630int
631max_outstanding(nreqs)
632 int nreqs
633 PROTOTYPE: $
634 CODE: 480 CODE:
635 RETVAL = max_outstanding; 481 eio_set_max_poll_time (nseconds);
482
483void
484min_parallel (int nthreads)
485 PROTOTYPE: $
486 CODE:
487 eio_set_min_parallel (nthreads);
488
489void
490max_parallel (int nthreads)
491 PROTOTYPE: $
492 CODE:
493 eio_set_max_parallel (nthreads);
494
495void
496max_idle (int nthreads)
497 PROTOTYPE: $
498 CODE:
499 eio_set_max_idle (nthreads);
500
501void
502max_outstanding (int maxreqs)
503 PROTOTYPE: $
504 CODE:
636 max_outstanding = nreqs; 505 max_outstanding = maxreqs;
637 506
638void 507void
639aio_open(pathname,flags,mode,callback=&PL_sv_undef) 508aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
640 SV * pathname
641 int flags
642 int mode
643 SV * callback
644 PROTOTYPE: $$$;$ 509 PROTOTYPE: $$$;$
645 CODE: 510 PPCODE:
646{ 511{
647 dREQ; 512 dREQ;
648 513
649 req->type = REQ_OPEN; 514 req->type = EIO_OPEN;
650 req->data = newSVsv (pathname); 515 req->sv1 = newSVsv (pathname);
651 req->dataptr = SvPVbyte_nolen (req->data); 516 req->ptr1 = SvPVbyte_nolen (req->sv1);
652 req->fd = flags; 517 req->int1 = flags;
653 req->mode = mode; 518 req->int2 = mode;
654 519
655 send_req (req); 520 REQ_SEND;
656} 521}
657 522
658void 523void
659aio_close(fh,callback=&PL_sv_undef) 524aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
660 SV * fh
661 SV * callback
662 PROTOTYPE: $;$ 525 PROTOTYPE: $;$
663 ALIAS: 526 ALIAS:
664 aio_close = REQ_CLOSE
665 aio_fsync = REQ_FSYNC 527 aio_fsync = EIO_FSYNC
666 aio_fdatasync = REQ_FDATASYNC 528 aio_fdatasync = EIO_FDATASYNC
667 CODE: 529 PPCODE:
668{ 530{
669 dREQ; 531 dREQ;
670 532
671 req->type = ix; 533 req->type = ix;
672 req->fh = newSVsv (fh); 534 req->sv1 = newSVsv (fh);
673 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 535 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
674 536
675 send_req (req); 537 REQ_SEND (req);
676} 538}
677 539
678void 540void
541aio_close (SV *fh, SV *callback=&PL_sv_undef)
542 PROTOTYPE: $;$
543 PPCODE:
544{
545 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
546 dREQ;
547
548 if (close_pipe < 0)
549 {
550 int pipefd [2];
551
552 if (pipe (pipefd) < 0
553 || close (pipefd [1]) < 0
554 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
555 abort (); /*D*/
556
557 close_pipe = pipefd [0];
558 }
559
560 req->type = EIO_DUP2;
561 req->int1 = close_pipe;
562 req->sv2 = newSVsv (fh);
563 req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
564
565 REQ_SEND (req);
566}
567
568void
679aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 569aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
680 SV * fh
681 UV offset
682 UV length
683 SV * data
684 UV dataoffset
685 SV * callback
686 ALIAS: 570 ALIAS:
687 aio_read = REQ_READ 571 aio_read = EIO_READ
688 aio_write = REQ_WRITE 572 aio_write = EIO_WRITE
689 PROTOTYPE: $$$$$;$ 573 PROTOTYPE: $$$$$;$
690 CODE: 574 PPCODE:
691{ 575{
692 aio_req req;
693 STRLEN svlen; 576 STRLEN svlen;
694 char *svptr = SvPVbyte (data, svlen); 577 char *svptr = SvPVbyte (data, svlen);
578 UV len = SvUV (length);
695 579
696 SvUPGRADE (data, SVt_PV); 580 SvUPGRADE (data, SVt_PV);
697 SvPOK_on (data); 581 SvPOK_on (data);
698 582
699 if (dataoffset < 0) 583 if (dataoffset < 0)
700 dataoffset += svlen; 584 dataoffset += svlen;
701 585
702 if (dataoffset < 0 || dataoffset > svlen) 586 if (dataoffset < 0 || dataoffset > svlen)
703 croak ("data offset outside of string"); 587 croak ("dataoffset outside of data scalar");
704 588
705 if (ix == REQ_WRITE) 589 if (ix == EIO_WRITE)
706 { 590 {
707 /* write: check length and adjust. */ 591 /* write: check length and adjust. */
708 if (length < 0 || length + dataoffset > svlen) 592 if (!SvOK (length) || len + dataoffset > svlen)
709 length = svlen - dataoffset; 593 len = svlen - dataoffset;
710 } 594 }
711 else 595 else
712 { 596 {
713 /* read: grow scalar as necessary */ 597 /* read: grow scalar as necessary */
714 svptr = SvGROW (data, length + dataoffset); 598 svptr = SvGROW (data, len + dataoffset + 1);
715 } 599 }
716 600
717 if (length < 0) 601 if (len < 0)
718 croak ("length must not be negative"); 602 croak ("length must not be negative");
719 603
720 { 604 {
721 dREQ; 605 dREQ;
722 606
723 req->type = ix; 607 req->type = ix;
724 req->fh = newSVsv (fh); 608 req->sv1 = newSVsv (fh);
725 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 609 req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
726 : IoOFP (sv_2io (fh))); 610 : IoOFP (sv_2io (fh)));
611 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
727 req->offset = offset; 612 req->size = len;
728 req->length = length;
729 req->data = SvREFCNT_inc (data); 613 req->sv2 = SvREFCNT_inc (data);
730 req->dataptr = (char *)svptr + dataoffset; 614 req->ptr2 = (char *)svptr + dataoffset;
615 req->stroffset = dataoffset;
731 616
732 if (!SvREADONLY (data)) 617 if (!SvREADONLY (data))
733 { 618 {
734 SvREADONLY_on (data); 619 SvREADONLY_on (data);
735 req->data2ptr = (void *)data; 620 req->flags |= FLAG_SV2_RO_OFF;
736 } 621 }
737 622
738 send_req (req); 623 REQ_SEND;
739 } 624 }
740} 625}
741 626
742void 627void
628aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
629 PROTOTYPE: $$;$
630 PPCODE:
631{
632 SV *data;
633 dREQ;
634
635 data = newSV (NAME_MAX);
636 SvPOK_on (data);
637
638 req->type = EIO_READLINK;
639 req->sv1 = newSVsv (path);
640 req->ptr1 = SvPVbyte_nolen (req->sv1);
641 req->sv2 = data;
642 req->ptr2 = SvPVbyte_nolen (data);
643
644 REQ_SEND;
645}
646
647void
743aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 648aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
744 SV * out_fh
745 SV * in_fh
746 UV in_offset
747 UV length
748 SV * callback
749 PROTOTYPE: $$$$;$ 649 PROTOTYPE: $$$$;$
750 CODE: 650 PPCODE:
751{ 651{
752 dREQ; 652 dREQ;
753 653
754 req->type = REQ_SENDFILE; 654 req->type = EIO_SENDFILE;
755 req->fh = newSVsv (out_fh); 655 req->sv1 = newSVsv (out_fh);
756 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 656 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
757 req->fh2 = newSVsv (in_fh); 657 req->sv2 = newSVsv (in_fh);
758 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 658 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
759 req->offset = in_offset; 659 req->offs = SvVAL64 (in_offset);
760 req->length = length; 660 req->size = length;
761 661
762 send_req (req); 662 REQ_SEND;
763} 663}
764 664
765void 665void
766aio_readahead(fh,offset,length,callback=&PL_sv_undef) 666aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
767 SV * fh
768 UV offset
769 IV length
770 SV * callback
771 PROTOTYPE: $$$;$ 667 PROTOTYPE: $$$;$
772 CODE: 668 PPCODE:
773{ 669{
774 dREQ; 670 dREQ;
775 671
776 req->type = REQ_READAHEAD; 672 req->type = EIO_READAHEAD;
777 req->fh = newSVsv (fh); 673 req->sv1 = newSVsv (fh);
778 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 674 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
779 req->offset = offset; 675 req->offs = SvVAL64 (offset);
780 req->length = length; 676 req->size = length;
781 677
782 send_req (req); 678 REQ_SEND;
783} 679}
784 680
785void 681void
786aio_stat(fh_or_path,callback=&PL_sv_undef) 682aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
787 SV * fh_or_path
788 SV * callback
789 ALIAS: 683 ALIAS:
790 aio_stat = REQ_STAT 684 aio_stat = EIO_STAT
791 aio_lstat = REQ_LSTAT 685 aio_lstat = EIO_LSTAT
792 CODE: 686 PPCODE:
793{ 687{
794 dREQ; 688 dREQ;
795 689
796 New (0, req->statdata, 1, Stat_t); 690 req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
797 if (!req->statdata) 691 if (!req->ptr2)
798 { 692 {
799 free_req (req); 693 req_destroy (req);
800 croak ("out of memory during aio_req->statdata allocation"); 694 croak ("out of memory during aio_stat statdata allocation");
801 } 695 }
696
697 req->flags |= EIO_FLAG_PTR2_FREE;
698 req->sv1 = newSVsv (fh_or_path);
802 699
803 if (SvPOK (fh_or_path)) 700 if (SvPOK (fh_or_path))
804 { 701 {
805 req->type = ix; 702 req->type = ix;
806 req->data = newSVsv (fh_or_path);
807 req->dataptr = SvPVbyte_nolen (req->data); 703 req->ptr1 = SvPVbyte_nolen (req->sv1);
808 } 704 }
809 else 705 else
810 { 706 {
811 req->type = REQ_FSTAT; 707 req->type = EIO_FSTAT;
812 req->fh = newSVsv (fh_or_path);
813 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 708 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
709 }
710
711 REQ_SEND;
712}
713
714void
715aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
716 PPCODE:
717{
718 dREQ;
719
720 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
721 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
722 req->sv1 = newSVsv (fh_or_path);
723
724 if (SvPOK (fh_or_path))
814 } 725 {
726 req->type = EIO_UTIME;
727 req->ptr1 = SvPVbyte_nolen (req->sv1);
728 }
729 else
730 {
731 req->type = EIO_FUTIME;
732 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
733 }
815 734
816 send_req (req); 735 REQ_SEND;
817} 736}
818 737
819void 738void
739aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
740 PPCODE:
741{
742 dREQ;
743
744 req->sv1 = newSVsv (fh_or_path);
745 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
746
747 if (SvPOK (fh_or_path))
748 {
749 req->type = EIO_TRUNCATE;
750 req->ptr1 = SvPVbyte_nolen (req->sv1);
751 }
752 else
753 {
754 req->type = EIO_FTRUNCATE;
755 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
756 }
757
758 REQ_SEND;
759}
760
761void
762aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
763 ALIAS:
764 aio_chmod = EIO_CHMOD
765 aio_fchmod = EIO_FCHMOD
766 aio_mkdir = EIO_MKDIR
767 PPCODE:
768{
769 dREQ;
770
771 req->type = ix;
772 req->int2 = mode;
773 req->sv1 = newSVsv (fh_or_path);
774
775 if (ix == EIO_FCHMOD)
776 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
777 else
778 req->ptr1 = SvPVbyte_nolen (req->sv1);
779
780 REQ_SEND;
781}
782
783void
784aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
785 PPCODE:
786{
787 dREQ;
788
789 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
790 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
791 req->sv1 = newSVsv (fh_or_path);
792
793 if (SvPOK (fh_or_path))
794 {
795 req->type = EIO_CHOWN;
796 req->ptr1 = SvPVbyte_nolen (req->sv1);
797 }
798 else
799 {
800 req->type = EIO_FCHOWN;
801 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
802 }
803
804 REQ_SEND;
805}
806
807void
820aio_unlink(pathname,callback=&PL_sv_undef) 808aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
821 SV * pathname
822 SV * callback
823 ALIAS: 809 ALIAS:
824 aio_unlink = REQ_UNLINK 810 aio_unlink = EIO_UNLINK
825 aio_rmdir = REQ_RMDIR 811 aio_rmdir = EIO_RMDIR
812 aio_readdir = EIO_READDIR
826 CODE: 813 PPCODE:
827{ 814{
828 dREQ; 815 dREQ;
829 816
830 req->type = ix; 817 req->type = ix;
831 req->data = newSVsv (pathname); 818 req->sv1 = newSVsv (pathname);
832 req->dataptr = SvPVbyte_nolen (req->data); 819 req->ptr1 = SvPVbyte_nolen (req->sv1);
820
821 REQ_SEND;
822}
823
824void
825aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
826 ALIAS:
827 aio_link = EIO_LINK
828 aio_symlink = EIO_SYMLINK
829 aio_rename = EIO_RENAME
830 PPCODE:
831{
832 dREQ;
833 833
834 send_req (req); 834 req->type = ix;
835} 835 req->sv1 = newSVsv (oldpath);
836 836 req->ptr1 = SvPVbyte_nolen (req->sv1);
837void 837 req->sv2 = newSVsv (newpath);
838aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 838 req->ptr2 = SvPVbyte_nolen (req->sv2);
839 SV * oldpath
840 SV * newpath
841 SV * callback
842 CODE:
843{
844 dREQ;
845 839
846 req->type = REQ_SYMLINK; 840 REQ_SEND;
847 req->fh = newSVsv (oldpath); 841}
848 req->data2ptr = SvPVbyte_nolen (req->fh); 842
849 req->data = newSVsv (newpath); 843void
850 req->dataptr = SvPVbyte_nolen (req->data); 844aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
845 PPCODE:
846{
847 dREQ;
851 848
852 send_req (req); 849 req->type = EIO_MKNOD;
850 req->sv1 = newSVsv (pathname);
851 req->ptr1 = SvPVbyte_nolen (req->sv1);
852 req->int2 = (mode_t)mode;
853 req->offs = dev;
854
855 REQ_SEND;
853} 856}
854 857
855void 858void
859aio_busy (double delay, SV *callback=&PL_sv_undef)
860 PPCODE:
861{
862 dREQ;
863
864 req->type = EIO_BUSY;
865 req->nv1 = delay < 0. ? 0. : delay;
866
867 REQ_SEND;
868}
869
870void
871aio_group (SV *callback=&PL_sv_undef)
872 PROTOTYPE: ;$
873 PPCODE:
874{
875 dREQ;
876
877 req->type = EIO_GROUP;
878
879 eio_submit (req);
880 XPUSHs (req_sv (req, AIO_GRP_KLASS));
881}
882
883void
884aio_nop (SV *callback=&PL_sv_undef)
885 ALIAS:
886 aio_nop = EIO_NOP
887 aio_sync = EIO_SYNC
888 PPCODE:
889{
890 dREQ;
891
892 req->type = ix;
893
894 REQ_SEND;
895}
896
897int
898aioreq_pri (int pri = 0)
899 PROTOTYPE: ;$
900 CODE:
901 RETVAL = next_pri - EIO_PRI_BIAS;
902 if (items > 0)
903 {
904 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
905 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
906 next_pri = pri + EIO_PRI_BIAS;
907 }
908 OUTPUT:
909 RETVAL
910
911void
912aioreq_nice (int nice = 0)
913 CODE:
914 nice = next_pri - nice;
915 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
916 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
917 next_pri = nice + EIO_PRI_BIAS;
918
919void
856flush() 920flush ()
857 PROTOTYPE: 921 PROTOTYPE:
858 CODE: 922 CODE:
859 while (nreqs) 923 while (nreqs)
860 { 924 {
861 poll_wait (); 925 poll_wait ();
862 poll_cb (); 926 poll_cb ();
863 } 927 }
864 928
865void 929int
866poll() 930poll()
867 PROTOTYPE: 931 PROTOTYPE:
868 CODE: 932 CODE:
869 if (nreqs)
870 {
871 poll_wait (); 933 poll_wait ();
872 poll_cb (); 934 RETVAL = poll_cb ();
873 } 935 OUTPUT:
936 RETVAL
874 937
875int 938int
876poll_fileno() 939poll_fileno()
877 PROTOTYPE: 940 PROTOTYPE:
878 CODE: 941 CODE:
… …
890 953
891void 954void
892poll_wait() 955poll_wait()
893 PROTOTYPE: 956 PROTOTYPE:
894 CODE: 957 CODE:
895 if (nreqs)
896 poll_wait (); 958 poll_wait ();
897 959
898int 960int
899nreqs() 961nreqs()
900 PROTOTYPE: 962 PROTOTYPE:
901 CODE: 963 CODE:
902 RETVAL = nreqs; 964 RETVAL = eio_nreqs ();
903 OUTPUT: 965 OUTPUT:
904 RETVAL 966 RETVAL
905 967
968int
969nready()
970 PROTOTYPE:
971 CODE:
972 RETVAL = eio_nready ();
973 OUTPUT:
974 RETVAL
975
976int
977npending()
978 PROTOTYPE:
979 CODE:
980 RETVAL = eio_npending ();
981 OUTPUT:
982 RETVAL
983
984int
985nthreads()
986 PROTOTYPE:
987 CODE:
988 if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
989 RETVAL = started;
990 if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
991 OUTPUT:
992 RETVAL
993
994PROTOTYPES: DISABLE
995
996MODULE = IO::AIO PACKAGE = IO::AIO::REQ
997
998void
999cancel (aio_req_ornot req)
1000 CODE:
1001 eio_cancel (req);
1002
1003void
1004cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1005 CODE:
1006 SvREFCNT_dec (req->callback);
1007 req->callback = newSVsv (callback);
1008
1009MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1010
1011void
1012add (aio_req grp, ...)
1013 PPCODE:
1014{
1015 int i;
1016
1017 if (grp->int1 == 2)
1018 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1019
1020 for (i = 1; i < items; ++i )
1021 {
1022 aio_req req;
1023
1024 if (GIMME_V != G_VOID)
1025 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1026
1027 req = SvAIO_REQ (ST (i));
1028
1029 if (req)
1030 eio_grp_add (grp, req);
1031 }
1032}
1033
1034void
1035cancel_subs (aio_req_ornot req)
1036 CODE:
1037 req_cancel_subs (req);
1038
1039void
1040result (aio_req grp, ...)
1041 CODE:
1042{
1043 int i;
1044 AV *av;
1045
1046 grp->errorno = errno;
1047
1048 av = newAV ();
1049
1050 for (i = 1; i < items; ++i )
1051 av_push (av, newSVsv (ST (i)));
1052
1053 SvREFCNT_dec (grp->sv1);
1054 grp->sv1 = (SV *)av;
1055}
1056
1057void
1058errno (aio_req grp, int errorno = errno)
1059 CODE:
1060 grp->errorno = errorno;
1061
1062void
1063limit (aio_req grp, int limit)
1064 CODE:
1065 eio_grp_limit (grp, limit);
1066
1067void
1068feed (aio_req grp, SV *callback=&PL_sv_undef)
1069 CODE:
1070{
1071 SvREFCNT_dec (grp->sv2);
1072 grp->sv2 = newSVsv (callback);
1073
1074 if (grp->int2 <= 0)
1075 grp->int2 = 2;
1076
1077 eio_grp_limit (grp, grp->int2);
1078}
1079

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