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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.65 by root, Tue Oct 24 00:26:32 2006 UTC vs.
Revision 1.82 by root, Fri Oct 27 20:11:58 2006 UTC

1#if __linux 1/* solaris */
2#define _POSIX_PTHREAD_SEMANTICS 1
3
4#if __linux && !defined(_GNU_SOURCE)
2# define _GNU_SOURCE 5# define _GNU_SOURCE
3#endif 6#endif
4 7
8/* just in case */
5#define _REENTRANT 1 9#define _REENTRANT 1
6 10
7#include <errno.h> 11#include <errno.h>
8 12
9#include "EXTERN.h" 13#include "EXTERN.h"
… …
44/* used for struct dirent, AIX doesn't provide it */ 48/* used for struct dirent, AIX doesn't provide it */
45#ifndef NAME_MAX 49#ifndef NAME_MAX
46# define NAME_MAX 4096 50# define NAME_MAX 4096
47#endif 51#endif
48 52
53#ifndef PTHREAD_STACK_MIN
54/* care for broken platforms, e.g. windows */
55# define PTHREAD_STACK_MIN 16384
56#endif
57
49#if __ia64 58#if __ia64
50# define STACKSIZE 65536 59# define STACKSIZE 65536
51#elif __i386 || __x86_64 /* 16k is unreasonably high :( */ 60#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
52# define STACKSIZE PTHREAD_STACK_MIN 61# define STACKSIZE PTHREAD_STACK_MIN
53#else 62#else
54# define STACKSIZE 16384 63# define STACKSIZE 16384
55#endif 64#endif
56 65
66/* wether word reads are potentially non-atomic.
67 * this is conservatice, likely most arches this runs
68 * on have atomic word read/writes.
69 */
70#ifndef WORDREAD_UNSAFE
71# if __i386 || __x86_64
72# define WORDREAD_UNSAFE 0
73# else
74# define WORDREAD_UNSAFE 1
75# endif
76#endif
77
57/* buffer size for various temporary buffers */ 78/* buffer size for various temporary buffers */
58#define AIO_BUFSIZE 65536 79#define AIO_BUFSIZE 65536
59 80
60#define dBUF \ 81#define dBUF \
82 char *aio_buf; \
83 LOCK (wrklock); \
61 char *aio_buf = malloc (AIO_BUFSIZE); \ 84 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
85 UNLOCK (wrklock); \
62 if (!aio_buf) \ 86 if (!aio_buf) \
63 return -1; 87 return -1;
64
65#define fBUF free (aio_buf)
66 88
67enum { 89enum {
68 REQ_QUIT, 90 REQ_QUIT,
69 REQ_OPEN, REQ_CLOSE, 91 REQ_OPEN, REQ_CLOSE,
70 REQ_READ, REQ_WRITE, REQ_READAHEAD, 92 REQ_READ, REQ_WRITE, REQ_READAHEAD,
71 REQ_SENDFILE, 93 REQ_SENDFILE,
72 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 94 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
73 REQ_FSYNC, REQ_FDATASYNC, 95 REQ_FSYNC, REQ_FDATASYNC,
74 REQ_UNLINK, REQ_RMDIR, REQ_RENAME, 96 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
75 REQ_READDIR, 97 REQ_MKNOD, REQ_READDIR,
76 REQ_LINK, REQ_SYMLINK, 98 REQ_LINK, REQ_SYMLINK,
77 REQ_GROUP, REQ_NOP, 99 REQ_GROUP, REQ_NOP,
78 REQ_SLEEP, 100 REQ_BUSY,
79}; 101};
80 102
81#define AIO_REQ_KLASS "IO::AIO::REQ" 103#define AIO_REQ_KLASS "IO::AIO::REQ"
82#define AIO_GRP_KLASS "IO::AIO::GRP" 104#define AIO_GRP_KLASS "IO::AIO::GRP"
83 105
… …
117 PRI_MIN = -4, 139 PRI_MIN = -4,
118 PRI_MAX = 4, 140 PRI_MAX = 4,
119 141
120 DEFAULT_PRI = 0, 142 DEFAULT_PRI = 0,
121 PRI_BIAS = -PRI_MIN, 143 PRI_BIAS = -PRI_MIN,
144 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
122}; 145};
123 146
124static int next_pri = DEFAULT_PRI + PRI_BIAS; 147static int next_pri = DEFAULT_PRI + PRI_BIAS;
125 148
126static int started, wanted; 149static unsigned int started, wanted;
127static volatile int nreqs;
128static int max_outstanding = 1<<30;
129static int respipe [2];
130 150
131#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 151#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
132# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP 152# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
133#else 153#else
134# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER 154# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
135#endif 155#endif
136 156
157#define LOCK(mutex) pthread_mutex_lock (&(mutex))
158#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
159
160/* worker threads management */
161static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
162
163typedef struct worker {
164 /* locked by wrklock */
165 struct worker *prev, *next;
166
167 pthread_t tid;
168
169 /* locked by reslock, reqlock or wrklock */
170 aio_req req; /* currently processed request */
171 void *dbuf;
172 DIR *dirp;
173} worker;
174
175static worker wrk_first = { &wrk_first, &wrk_first, 0 };
176
177static void worker_clear (worker *wrk)
178{
179 if (wrk->dirp)
180 {
181 closedir (wrk->dirp);
182 wrk->dirp = 0;
183 }
184
185 if (wrk->dbuf)
186 {
187 free (wrk->dbuf);
188 wrk->dbuf = 0;
189 }
190}
191
192static void worker_free (worker *wrk)
193{
194 wrk->next->prev = wrk->prev;
195 wrk->prev->next = wrk->next;
196
197 free (wrk);
198}
199
200static volatile unsigned int nreqs, nready, npending;
201static volatile unsigned int max_outstanding = 0xffffffff;
202static int respipe [2];
203
137static pthread_mutex_t reslock = AIO_MUTEX_INIT; 204static pthread_mutex_t reslock = AIO_MUTEX_INIT;
138static pthread_mutex_t reqlock = AIO_MUTEX_INIT; 205static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
139static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 206static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
140 207
141static volatile aio_req reqs, reqe; /* queue start, queue end */ 208#if WORDREAD_UNSAFE
142static volatile aio_req ress, rese; /* queue start, queue end */
143 209
210static unsigned int get_nready ()
211{
212 unsigned int retval;
213
214 LOCK (reqlock);
215 retval = nready;
216 UNLOCK (reqlock);
217
218 return retval;
219}
220
221static unsigned int get_npending ()
222{
223 unsigned int retval;
224
225 LOCK (reslock);
226 retval = npending;
227 UNLOCK (reslock);
228
229 return retval;
230}
231
232#else
233
234# define get_nready() nready
235# define get_npending() npending
236
237#endif
238
239/*
240 * a somewhat faster data structure might be nice, but
241 * with 8 priorities this actually needs <20 insns
242 * per shift, the most expensive operation.
243 */
244typedef struct {
245 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
246 int size;
247} reqq;
248
249static reqq req_queue;
250static reqq res_queue;
251
252int reqq_push (reqq *q, aio_req req)
253{
254 int pri = req->pri;
255 req->next = 0;
256
257 if (q->qe[pri])
258 {
259 q->qe[pri]->next = req;
260 q->qe[pri] = req;
261 }
262 else
263 q->qe[pri] = q->qs[pri] = req;
264
265 return q->size++;
266}
267
268aio_req reqq_shift (reqq *q)
269{
270 int pri;
271
272 if (!q->size)
273 return 0;
274
275 --q->size;
276
277 for (pri = NUM_PRI; pri--; )
278 {
279 aio_req req = q->qs[pri];
280
281 if (req)
282 {
283 if (!(q->qs[pri] = req->next))
284 q->qe[pri] = 0;
285
286 return req;
287 }
288 }
289
290 abort ();
291}
292
293static int poll_cb (int max);
144static void req_invoke (aio_req req); 294static void req_invoke (aio_req req);
145static void req_free (aio_req req); 295static void req_free (aio_req req);
296static void req_cancel (aio_req req);
146 297
147/* must be called at most once */ 298/* must be called at most once */
148static SV *req_sv (aio_req req, const char *klass) 299static SV *req_sv (aio_req req, const char *klass)
149{ 300{
150 if (!req->self) 301 if (!req->self)
… …
181 ENTER; 332 ENTER;
182 SAVETMPS; 333 SAVETMPS;
183 PUSHMARK (SP); 334 PUSHMARK (SP);
184 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 335 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
185 PUTBACK; 336 PUTBACK;
186 call_sv (grp->fh2, G_VOID | G_EVAL); 337 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
187 SPAGAIN; 338 SPAGAIN;
188 FREETMPS; 339 FREETMPS;
189 LEAVE; 340 LEAVE;
190 } 341 }
191 342
… …
212 req_invoke (grp); 363 req_invoke (grp);
213 req_free (grp); 364 req_free (grp);
214 } 365 }
215} 366}
216 367
217static void poll_wait ()
218{
219 fd_set rfd;
220
221 while (nreqs)
222 {
223 aio_req req;
224#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
225 pthread_mutex_lock (&reslock);
226#endif
227 req = ress;
228#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
229 pthread_mutex_unlock (&reslock);
230#endif
231
232 if (req)
233 return;
234
235 FD_ZERO(&rfd);
236 FD_SET(respipe [0], &rfd);
237
238 select (respipe [0] + 1, &rfd, 0, 0, 0);
239 }
240}
241
242static void req_invoke (aio_req req) 368static void req_invoke (aio_req req)
243{ 369{
244 dSP; 370 dSP;
245 int errorno = errno;
246 371
247 if (req->flags & FLAG_CANCELLED || !SvOK (req->callback)) 372 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
248 return; 373 {
249
250 errno = req->errorno;
251
252 ENTER; 374 ENTER;
253 SAVETMPS; 375 SAVETMPS;
254 PUSHMARK (SP); 376 PUSHMARK (SP);
255 EXTEND (SP, 1); 377 EXTEND (SP, 1);
256 378
257 switch (req->type) 379 switch (req->type)
258 {
259 case REQ_READDIR:
260 { 380 {
261 SV *rv = &PL_sv_undef; 381 case REQ_READDIR:
262
263 if (req->result >= 0)
264 { 382 {
265 char *buf = req->data2ptr; 383 SV *rv = &PL_sv_undef;
266 AV *av = newAV ();
267 384
268 while (req->result) 385 if (req->result >= 0)
269 { 386 {
387 int i;
388 char *buf = req->data2ptr;
389 AV *av = newAV ();
390
391 av_extend (av, req->result - 1);
392
393 for (i = 0; i < req->result; ++i)
394 {
270 SV *sv = newSVpv (buf, 0); 395 SV *sv = newSVpv (buf, 0);
271 396
272 av_push (av, sv); 397 av_store (av, i, sv);
273 buf += SvCUR (sv) + 1; 398 buf += SvCUR (sv) + 1;
274 req->result--; 399 }
400
401 rv = sv_2mortal (newRV_noinc ((SV *)av));
275 } 402 }
276 403
277 rv = sv_2mortal (newRV_noinc ((SV *)av)); 404 PUSHs (rv);
278 } 405 }
406 break;
279 407
280 PUSHs (rv); 408 case REQ_OPEN:
409 {
410 /* convert fd to fh */
411 SV *fh;
412
413 PUSHs (sv_2mortal (newSViv (req->result)));
414 PUTBACK;
415 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
416 SPAGAIN;
417
418 fh = SvREFCNT_inc (POPs);
419
420 PUSHMARK (SP);
421 XPUSHs (sv_2mortal (fh));
422 }
423 break;
424
425 case REQ_GROUP:
426 req->fd = 2; /* mark group as finished */
427
428 if (req->data)
429 {
430 int i;
431 AV *av = (AV *)req->data;
432
433 EXTEND (SP, AvFILL (av) + 1);
434 for (i = 0; i <= AvFILL (av); ++i)
435 PUSHs (*av_fetch (av, i, 0));
436 }
437 break;
438
439 case REQ_NOP:
440 case REQ_BUSY:
441 break;
442
443 default:
444 PUSHs (sv_2mortal (newSViv (req->result)));
445 break;
281 } 446 }
282 break;
283 447
284 case REQ_OPEN: 448 errno = req->errorno;
285 {
286 /* convert fd to fh */
287 SV *fh;
288 449
289 PUSHs (sv_2mortal (newSViv (req->result)));
290 PUTBACK; 450 PUTBACK;
291 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
292 SPAGAIN;
293
294 fh = SvREFCNT_inc (POPs);
295
296 PUSHMARK (SP);
297 XPUSHs (sv_2mortal (fh));
298 }
299 break;
300
301 case REQ_GROUP:
302 req->fd = 2; /* mark group as finished */
303
304 if (req->data)
305 {
306 int i;
307 AV *av = (AV *)req->data;
308
309 EXTEND (SP, AvFILL (av) + 1);
310 for (i = 0; i <= AvFILL (av); ++i)
311 PUSHs (*av_fetch (av, i, 0));
312 }
313 break;
314
315 case REQ_NOP:
316 case REQ_SLEEP:
317 break;
318
319 default:
320 PUSHs (sv_2mortal (newSViv (req->result)));
321 break;
322 }
323
324
325 PUTBACK;
326 call_sv (req->callback, G_VOID | G_EVAL); 451 call_sv (req->callback, G_VOID | G_EVAL);
327 SPAGAIN; 452 SPAGAIN;
328 453
329 FREETMPS; 454 FREETMPS;
330 LEAVE; 455 LEAVE;
331
332 errno = errorno;
333
334 if (SvTRUE (ERRSV))
335 { 456 }
336 req_free (req);
337 croak (0);
338 }
339}
340 457
341static void req_free (aio_req req)
342{
343 if (req->grp) 458 if (req->grp)
344 { 459 {
345 aio_req grp = req->grp; 460 aio_req grp = req->grp;
346 461
347 /* unlink request */ 462 /* unlink request */
… …
352 grp->grp_first = req->grp_next; 467 grp->grp_first = req->grp_next;
353 468
354 aio_grp_dec (grp); 469 aio_grp_dec (grp);
355 } 470 }
356 471
472 if (SvTRUE (ERRSV))
473 {
474 req_free (req);
475 croak (0);
476 }
477}
478
479static void req_free (aio_req req)
480{
357 if (req->self) 481 if (req->self)
358 { 482 {
359 sv_unmagic (req->self, PERL_MAGIC_ext); 483 sv_unmagic (req->self, PERL_MAGIC_ext);
360 SvREFCNT_dec (req->self); 484 SvREFCNT_dec (req->self);
361 } 485 }
… …
364 SvREFCNT_dec (req->fh); 488 SvREFCNT_dec (req->fh);
365 SvREFCNT_dec (req->fh2); 489 SvREFCNT_dec (req->fh2);
366 SvREFCNT_dec (req->callback); 490 SvREFCNT_dec (req->callback);
367 Safefree (req->statdata); 491 Safefree (req->statdata);
368 492
369 if (req->type == REQ_READDIR && req->result >= 0) 493 if (req->type == REQ_READDIR)
370 free (req->data2ptr); 494 free (req->data2ptr);
371 495
372 Safefree (req); 496 Safefree (req);
373} 497}
374 498
499static void req_cancel_subs (aio_req grp)
500{
501 aio_req sub;
502
503 if (grp->type != REQ_GROUP)
504 return;
505
506 SvREFCNT_dec (grp->fh2);
507 grp->fh2 = 0;
508
509 for (sub = grp->grp_first; sub; sub = sub->grp_next)
510 req_cancel (sub);
511}
512
375static void req_cancel (aio_req req) 513static void req_cancel (aio_req req)
376{ 514{
377 req->flags |= FLAG_CANCELLED; 515 req->flags |= FLAG_CANCELLED;
378 516
379 if (req->type == REQ_GROUP) 517 req_cancel_subs (req);
380 { 518}
381 aio_req sub;
382 519
383 for (sub = req->grp_first; sub; sub = sub->grp_next) 520static void *aio_proc(void *arg);
384 req_cancel (sub); 521
522static void start_thread (void)
523{
524 sigset_t fullsigset, oldsigset;
525 pthread_attr_t attr;
526
527 worker *wrk = calloc (1, sizeof (worker));
528
529 if (!wrk)
530 croak ("unable to allocate worker thread data");
531
532 pthread_attr_init (&attr);
533 pthread_attr_setstacksize (&attr, STACKSIZE);
534 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
535#ifdef PTHREAD_SCOPE_PROCESS
536 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
537#endif
538
539 sigfillset (&fullsigset);
540
541 LOCK (wrklock);
542 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
543
544 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
385 } 545 {
386} 546 wrk->prev = &wrk_first;
547 wrk->next = wrk_first.next;
548 wrk_first.next->prev = wrk;
549 wrk_first.next = wrk;
550 ++started;
551 }
552 else
553 free (wrk);
387 554
555 sigprocmask (SIG_SETMASK, &oldsigset, 0);
556 UNLOCK (wrklock);
557}
558
559static void maybe_start_thread ()
560{
561#if 0
562 static struct timeval last;
563 struct timeval diff, now;
564#endif
565
566 if (started >= wanted)
567 return;
568
569 if (nready <= nreqs - get_nready () - get_npending ())
570 return;
571
572#if 0
573 gettimeofday (&now, 0);
574
575 diff.tv_sec = now.tv_sec - last.tv_sec;
576 diff.tv_usec = now.tv_usec - last.tv_usec;
577
578 if (diff.tv_usec < 0)
579 {
580 --diff.tv_sec;
581 diff.tv_usec += 1000000;
582 }
583
584 if (!diff.tv_sec && diff.tv_usec < 10000)
585 return;
586
587 last = now;
588#endif
589
590 start_thread ();
591}
592
593static void req_send (aio_req req)
594{
595 ++nreqs;
596
597 LOCK (reqlock);
598 ++nready;
599 reqq_push (&req_queue, req);
600 pthread_cond_signal (&reqwait);
601 UNLOCK (reqlock);
602
603 maybe_start_thread ();
604}
605
606static void end_thread (void)
607{
608 aio_req req;
609
610 Newz (0, req, 1, aio_cb);
611
612 req->type = REQ_QUIT;
613 req->pri = PRI_MAX + PRI_BIAS;
614
615 req_send (req);
616
617 LOCK (wrklock);
618 --started;
619 UNLOCK (wrklock);
620}
621
622static void min_parallel (int nthreads)
623{
624 if (wanted < nthreads)
625 wanted = nthreads;
626}
627
628static void max_parallel (int nthreads)
629{
630 if (wanted > nthreads)
631 wanted = nthreads;
632
633 while (started > wanted)
634 end_thread ();
635}
636
637static void poll_wait ()
638{
639 fd_set rfd;
640
641 while (nreqs)
642 {
643 int size;
644 if (WORDREAD_UNSAFE) LOCK (reslock);
645 size = res_queue.size;
646 if (WORDREAD_UNSAFE) UNLOCK (reslock);
647
648 if (size)
649 return;
650
651 maybe_start_thread ();
652
653 FD_ZERO(&rfd);
654 FD_SET(respipe [0], &rfd);
655
656 select (respipe [0] + 1, &rfd, 0, 0, 0);
657 }
658}
659
388static int poll_cb () 660static int poll_cb (int max)
389{ 661{
390 dSP; 662 dSP;
391 int count = 0; 663 int count = 0;
392 int do_croak = 0; 664 int do_croak = 0;
393 aio_req req; 665 aio_req req;
394 666
395 for (;;) 667 for (;;)
396 { 668 {
397 pthread_mutex_lock (&reslock); 669 while (max <= 0 || count < max)
398 req = ress;
399
400 if (req)
401 { 670 {
402 ress = req->next; 671 maybe_start_thread ();
403 672
673 LOCK (reslock);
674 req = reqq_shift (&res_queue);
675
404 if (!ress) 676 if (req)
405 { 677 {
678 --npending;
679
680 if (!res_queue.size)
681 {
406 /* read any signals sent by the worker threads */ 682 /* read any signals sent by the worker threads */
407 char buf [32]; 683 char buf [32];
408 while (read (respipe [0], buf, 32) == 32) 684 while (read (respipe [0], buf, 32) == 32)
685 ;
409 ; 686 }
410
411 rese = 0;
412 } 687 }
688
689 UNLOCK (reslock);
690
691 if (!req)
692 break;
693
694 --nreqs;
695
696 if (req->type == REQ_GROUP && req->length)
697 {
698 req->fd = 1; /* mark request as delayed */
699 continue;
700 }
701 else
702 {
703 if (req->type == REQ_READ)
704 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
705
706 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
707 SvREADONLY_off (req->data);
708
709 if (req->statdata)
710 {
711 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
712 PL_laststatval = req->result;
713 PL_statcache = *(req->statdata);
714 }
715
716 req_invoke (req);
717
718 count++;
719 }
720
721 req_free (req);
413 } 722 }
414 723
415 pthread_mutex_unlock (&reslock); 724 if (nreqs <= max_outstanding)
416
417 if (!req)
418 break; 725 break;
419 726
420 --nreqs; 727 poll_wait ();
421 728
422 if (req->type == REQ_QUIT) 729 max = 0;
423 started--;
424 else if (req->type == REQ_GROUP && req->length)
425 {
426 req->fd = 1; /* mark request as delayed */
427 continue;
428 }
429 else
430 {
431 if (req->type == REQ_READ)
432 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
433
434 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
435 SvREADONLY_off (req->data);
436
437 if (req->statdata)
438 {
439 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
440 PL_laststatval = req->result;
441 PL_statcache = *(req->statdata);
442 }
443
444 req_invoke (req);
445
446 count++;
447 }
448
449 req_free (req);
450 } 730 }
451 731
452 return count; 732 return count;
453}
454
455static void *aio_proc(void *arg);
456
457static void start_thread (void)
458{
459 sigset_t fullsigset, oldsigset;
460 pthread_t tid;
461 pthread_attr_t attr;
462
463 pthread_attr_init (&attr);
464 pthread_attr_setstacksize (&attr, STACKSIZE);
465 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
466
467 sigfillset (&fullsigset);
468 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
469
470 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
471 started++;
472
473 sigprocmask (SIG_SETMASK, &oldsigset, 0);
474}
475
476static void req_send (aio_req req)
477{
478 while (started < wanted && nreqs >= started)
479 start_thread ();
480
481 ++nreqs;
482
483 pthread_mutex_lock (&reqlock);
484
485 req->next = 0;
486
487 if (reqe)
488 {
489 reqe->next = req;
490 reqe = req;
491 }
492 else
493 reqe = reqs = req;
494
495 pthread_cond_signal (&reqwait);
496 pthread_mutex_unlock (&reqlock);
497
498 if (nreqs > max_outstanding)
499 for (;;)
500 {
501 poll_cb ();
502
503 if (nreqs <= max_outstanding)
504 break;
505
506 poll_wait ();
507 }
508}
509
510static void end_thread (void)
511{
512 aio_req req;
513 Newz (0, req, 1, aio_cb);
514 req->type = REQ_QUIT;
515
516 req_send (req);
517}
518
519static void min_parallel (int nthreads)
520{
521 if (wanted < nthreads)
522 wanted = nthreads;
523}
524
525static void max_parallel (int nthreads)
526{
527 int cur = started;
528
529 if (wanted > nthreads)
530 wanted = nthreads;
531
532 while (cur > wanted)
533 {
534 end_thread ();
535 cur--;
536 }
537
538 while (started > wanted)
539 {
540 poll_wait ();
541 poll_cb ();
542 }
543} 733}
544 734
545static void create_pipe () 735static void create_pipe ()
546{ 736{
547 if (pipe (respipe)) 737 if (pipe (respipe))
… …
571static ssize_t pread (int fd, void *buf, size_t count, off_t offset) 761static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
572{ 762{
573 ssize_t res; 763 ssize_t res;
574 off_t ooffset; 764 off_t ooffset;
575 765
576 pthread_mutex_lock (&preadwritelock); 766 LOCK (preadwritelock);
577 ooffset = lseek (fd, 0, SEEK_CUR); 767 ooffset = lseek (fd, 0, SEEK_CUR);
578 lseek (fd, offset, SEEK_SET); 768 lseek (fd, offset, SEEK_SET);
579 res = read (fd, buf, count); 769 res = read (fd, buf, count);
580 lseek (fd, ooffset, SEEK_SET); 770 lseek (fd, ooffset, SEEK_SET);
581 pthread_mutex_unlock (&preadwritelock); 771 UNLOCK (preadwritelock);
582 772
583 return res; 773 return res;
584} 774}
585 775
586static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 776static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
587{ 777{
588 ssize_t res; 778 ssize_t res;
589 off_t ooffset; 779 off_t ooffset;
590 780
591 pthread_mutex_lock (&preadwritelock); 781 LOCK (preadwritelock);
592 ooffset = lseek (fd, 0, SEEK_CUR); 782 ooffset = lseek (fd, 0, SEEK_CUR);
593 lseek (fd, offset, SEEK_SET); 783 lseek (fd, offset, SEEK_SET);
594 res = write (fd, buf, count); 784 res = write (fd, buf, count);
595 lseek (fd, offset, SEEK_SET); 785 lseek (fd, offset, SEEK_SET);
596 pthread_mutex_unlock (&preadwritelock); 786 UNLOCK (preadwritelock);
597 787
598 return res; 788 return res;
599} 789}
600#endif 790#endif
601 791
602#if !HAVE_FDATASYNC 792#if !HAVE_FDATASYNC
603# define fdatasync fsync 793# define fdatasync fsync
604#endif 794#endif
605 795
606#if !HAVE_READAHEAD 796#if !HAVE_READAHEAD
607# define readahead aio_readahead 797# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
608 798
609static ssize_t readahead (int fd, off_t offset, size_t count) 799static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
610{ 800{
611 dBUF; 801 dBUF;
612 802
613 while (count > 0) 803 while (count > 0)
614 { 804 {
… …
617 pread (fd, aio_buf, len, offset); 807 pread (fd, aio_buf, len, offset);
618 offset += len; 808 offset += len;
619 count -= len; 809 count -= len;
620 } 810 }
621 811
622 fBUF;
623
624 errno = 0; 812 errno = 0;
625} 813}
814
626#endif 815#endif
627 816
628#if !HAVE_READDIR_R 817#if !HAVE_READDIR_R
629# define readdir_r aio_readdir_r 818# define readdir_r aio_readdir_r
630 819
… …
633static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) 822static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
634{ 823{
635 struct dirent *e; 824 struct dirent *e;
636 int errorno; 825 int errorno;
637 826
638 pthread_mutex_lock (&readdirlock); 827 LOCK (readdirlock);
639 828
640 e = readdir (dirp); 829 e = readdir (dirp);
641 errorno = errno; 830 errorno = errno;
642 831
643 if (e) 832 if (e)
… …
646 strcpy (ent->d_name, e->d_name); 835 strcpy (ent->d_name, e->d_name);
647 } 836 }
648 else 837 else
649 *res = 0; 838 *res = 0;
650 839
651 pthread_mutex_unlock (&readdirlock); 840 UNLOCK (readdirlock);
652 841
653 errno = errorno; 842 errno = errorno;
654 return e ? 0 : -1; 843 return e ? 0 : -1;
655} 844}
656#endif 845#endif
657 846
658/* sendfile always needs emulation */ 847/* sendfile always needs emulation */
659static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 848static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
660{ 849{
661 ssize_t res; 850 ssize_t res;
662 851
663 if (!count) 852 if (!count)
664 return 0; 853 return 0;
… …
675 { 864 {
676 off_t sbytes; 865 off_t sbytes;
677 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 866 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
678 867
679 if (res < 0 && sbytes) 868 if (res < 0 && sbytes)
680 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 869 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
681 res = sbytes; 870 res = sbytes;
682 } 871 }
683 872
684# elif __hpux 873# elif __hpux
685 res = sendfile (ofd, ifd, offset, count, 0, 0); 874 res = sendfile (ofd, ifd, offset, count, 0, 0);
… …
741 930
742 offset += cnt; 931 offset += cnt;
743 res += cnt; 932 res += cnt;
744 count -= cnt; 933 count -= cnt;
745 } 934 }
746
747 fBUF;
748 } 935 }
749 936
750 return res; 937 return res;
751} 938}
752 939
753/* read a full directory */ 940/* read a full directory */
754static int scandir_ (const char *path, void **namesp) 941static void scandir_ (aio_req req, worker *self)
755{ 942{
756 DIR *dirp; 943 DIR *dirp;
757 union 944 union
758 { 945 {
759 struct dirent d; 946 struct dirent d;
… …
764 int memlen = 4096; 951 int memlen = 4096;
765 int memofs = 0; 952 int memofs = 0;
766 int res = 0; 953 int res = 0;
767 int errorno; 954 int errorno;
768 955
769 dirp = opendir (path); 956 LOCK (wrklock);
770 if (!dirp) 957 self->dirp = dirp = opendir (req->dataptr);
771 return -1;
772
773 u = malloc (sizeof (*u)); 958 self->dbuf = u = malloc (sizeof (*u));
774 names = malloc (memlen); 959 req->data2ptr = names = malloc (memlen);
960 UNLOCK (wrklock);
775 961
776 if (u && names) 962 if (dirp && u && names)
777 for (;;) 963 for (;;)
778 { 964 {
779 errno = 0; 965 errno = 0;
780 readdir_r (dirp, &u->d, &entp); 966 readdir_r (dirp, &u->d, &entp);
781 967
… …
791 res++; 977 res++;
792 978
793 while (memofs + len > memlen) 979 while (memofs + len > memlen)
794 { 980 {
795 memlen *= 2; 981 memlen *= 2;
982 LOCK (wrklock);
796 names = realloc (names, memlen); 983 req->data2ptr = names = realloc (names, memlen);
984 UNLOCK (wrklock);
985
797 if (!names) 986 if (!names)
798 break; 987 break;
799 } 988 }
800 989
801 memcpy (names + memofs, name, len); 990 memcpy (names + memofs, name, len);
802 memofs += len; 991 memofs += len;
803 } 992 }
804 } 993 }
805 994
806 errorno = errno;
807 free (u);
808 closedir (dirp);
809
810 if (errorno) 995 if (errno)
811 {
812 free (names);
813 errno = errorno;
814 res = -1; 996 res = -1;
815 } 997
816 998 req->result = res;
817 *namesp = (void *)names;
818 return res;
819} 999}
820 1000
821/*****************************************************************************/ 1001/*****************************************************************************/
822 1002
823static void *aio_proc (void *thr_arg) 1003static void *aio_proc (void *thr_arg)
824{ 1004{
825 aio_req req; 1005 aio_req req;
826 int type; 1006 worker *self = (worker *)thr_arg;
827 1007
828 do 1008 for (;;)
829 { 1009 {
830 pthread_mutex_lock (&reqlock); 1010 LOCK (reqlock);
831 1011
832 for (;;) 1012 for (;;)
833 { 1013 {
834 req = reqs; 1014 self->req = req = reqq_shift (&req_queue);
835
836 if (reqs)
837 {
838 reqs = reqs->next;
839 if (!reqs) reqe = 0;
840 }
841 1015
842 if (req) 1016 if (req)
843 break; 1017 break;
844 1018
845 pthread_cond_wait (&reqwait, &reqlock); 1019 pthread_cond_wait (&reqwait, &reqlock);
846 } 1020 }
847 1021
848 pthread_mutex_unlock (&reqlock); 1022 --nready;
1023
1024 UNLOCK (reqlock);
849 1025
850 errno = 0; /* strictly unnecessary */ 1026 errno = 0; /* strictly unnecessary */
851 type = req->type; /* remember type for QUIT check */
852 1027
853 if (!(req->flags & FLAG_CANCELLED)) 1028 if (!(req->flags & FLAG_CANCELLED))
854 switch (type) 1029 switch (req->type)
855 { 1030 {
856 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 1031 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
857 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 1032 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
858 1033
859 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 1034 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
860 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; 1035 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
861 1036
862 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 1037 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
863 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 1038 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
864 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 1039 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
865 1040
… …
868 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 1043 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
869 case REQ_RMDIR: req->result = rmdir (req->dataptr); break; 1044 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
870 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; 1045 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
871 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; 1046 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
872 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 1047 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1048 case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
873 1049
874 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 1050 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
875 case REQ_FSYNC: req->result = fsync (req->fd); break; 1051 case REQ_FSYNC: req->result = fsync (req->fd); break;
876 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; 1052 case REQ_READDIR: scandir_ (req, self); break;
877 1053
878 case REQ_SLEEP: 1054 case REQ_BUSY:
879 { 1055 {
880 struct timeval tv; 1056 struct timeval tv;
881 1057
882 tv.tv_sec = req->fd; 1058 tv.tv_sec = req->fd;
883 tv.tv_usec = req->fd2; 1059 tv.tv_usec = req->fd2;
… …
885 req->result = select (0, 0, 0, 0, &tv); 1061 req->result = select (0, 0, 0, 0, &tv);
886 } 1062 }
887 1063
888 case REQ_GROUP: 1064 case REQ_GROUP:
889 case REQ_NOP: 1065 case REQ_NOP:
1066 break;
1067
890 case REQ_QUIT: 1068 case REQ_QUIT:
1069 LOCK (wrklock);
1070 worker_free (self);
1071 --started;
1072 UNLOCK (wrklock);
891 break; 1073 return 0;
892 1074
893 default: 1075 default:
894 req->result = ENOSYS; 1076 req->result = ENOSYS;
895 break; 1077 break;
896 } 1078 }
897 1079
898 req->errorno = errno; 1080 req->errorno = errno;
899 1081
900 pthread_mutex_lock (&reslock); 1082 LOCK (reslock);
901 1083
902 req->next = 0; 1084 ++npending;
903 1085
904 if (rese) 1086 if (!reqq_push (&res_queue, req))
905 {
906 rese->next = req;
907 rese = req;
908 }
909 else
910 {
911 rese = ress = req;
912
913 /* write a dummy byte to the pipe so fh becomes ready */ 1087 /* write a dummy byte to the pipe so fh becomes ready */
914 write (respipe [1], &respipe, 1); 1088 write (respipe [1], &respipe, 1);
915 }
916 1089
917 pthread_mutex_unlock (&reslock); 1090 self->req = 0;
918 } 1091 worker_clear (self);
919 while (type != REQ_QUIT);
920 1092
921 return 0; 1093 UNLOCK (reslock);
1094 }
922} 1095}
923 1096
924/*****************************************************************************/ 1097/*****************************************************************************/
925 1098
926static void atfork_prepare (void) 1099static void atfork_prepare (void)
927{ 1100{
928 pthread_mutex_lock (&reqlock); 1101 LOCK (wrklock);
929 pthread_mutex_lock (&reslock); 1102 LOCK (reqlock);
1103 LOCK (reslock);
930#if !HAVE_PREADWRITE 1104#if !HAVE_PREADWRITE
931 pthread_mutex_lock (&preadwritelock); 1105 LOCK (preadwritelock);
932#endif 1106#endif
933#if !HAVE_READDIR_R 1107#if !HAVE_READDIR_R
934 pthread_mutex_lock (&readdirlock); 1108 LOCK (readdirlock);
935#endif 1109#endif
936} 1110}
937 1111
938static void atfork_parent (void) 1112static void atfork_parent (void)
939{ 1113{
940#if !HAVE_READDIR_R 1114#if !HAVE_READDIR_R
941 pthread_mutex_unlock (&readdirlock); 1115 UNLOCK (readdirlock);
942#endif 1116#endif
943#if !HAVE_PREADWRITE 1117#if !HAVE_PREADWRITE
944 pthread_mutex_unlock (&preadwritelock); 1118 UNLOCK (preadwritelock);
945#endif 1119#endif
946 pthread_mutex_unlock (&reslock); 1120 UNLOCK (reslock);
947 pthread_mutex_unlock (&reqlock); 1121 UNLOCK (reqlock);
1122 UNLOCK (wrklock);
948} 1123}
949 1124
950static void atfork_child (void) 1125static void atfork_child (void)
951{ 1126{
952 aio_req prv; 1127 aio_req prv;
953 1128
1129 while (prv = reqq_shift (&req_queue))
1130 req_free (prv);
1131
1132 while (prv = reqq_shift (&res_queue))
1133 req_free (prv);
1134
1135 while (wrk_first.next != &wrk_first)
1136 {
1137 worker *wrk = wrk_first.next;
1138
1139 if (wrk->req)
1140 req_free (wrk->req);
1141
1142 worker_clear (wrk);
1143 worker_free (wrk);
1144 }
1145
954 started = 0; 1146 started = 0;
955 1147 nreqs = 0;
956 while (reqs)
957 {
958 prv = reqs;
959 reqs = prv->next;
960 req_free (prv);
961 }
962
963 reqs = reqe = 0;
964
965 while (ress)
966 {
967 prv = ress;
968 ress = prv->next;
969 req_free (prv);
970 }
971
972 ress = rese = 0;
973 1148
974 close (respipe [0]); 1149 close (respipe [0]);
975 close (respipe [1]); 1150 close (respipe [1]);
976 create_pipe (); 1151 create_pipe ();
977 1152
… …
1004PROTOTYPES: ENABLE 1179PROTOTYPES: ENABLE
1005 1180
1006BOOT: 1181BOOT:
1007{ 1182{
1008 HV *stash = gv_stashpv ("IO::AIO", 1); 1183 HV *stash = gv_stashpv ("IO::AIO", 1);
1184
1009 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1185 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1010 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1186 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1011 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); 1187 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1188 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1189 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1190 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1012 1191
1013 create_pipe (); 1192 create_pipe ();
1014 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1193 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1015}
1016 1194
1195 start_thread ();
1196}
1197
1017void 1198void
1018min_parallel (nthreads) 1199min_parallel (int nthreads)
1019 int nthreads
1020 PROTOTYPE: $ 1200 PROTOTYPE: $
1021 1201
1022void 1202void
1023max_parallel (nthreads) 1203max_parallel (int nthreads)
1024 int nthreads
1025 PROTOTYPE: $ 1204 PROTOTYPE: $
1026 1205
1027int 1206int
1028max_outstanding (nreqs) 1207max_outstanding (int maxreqs)
1029 int nreqs 1208 PROTOTYPE: $
1030 PROTOTYPE: $
1031 CODE: 1209 CODE:
1032 RETVAL = max_outstanding; 1210 RETVAL = max_outstanding;
1033 max_outstanding = nreqs; 1211 max_outstanding = maxreqs;
1212 OUTPUT:
1213 RETVAL
1034 1214
1035void 1215void
1036aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1216aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1037 SV * pathname 1217 SV * pathname
1038 int flags 1218 int flags
… …
1253 1433
1254 REQ_SEND; 1434 REQ_SEND;
1255} 1435}
1256 1436
1257void 1437void
1438aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1439 SV * pathname
1440 SV * callback
1441 UV mode
1442 UV dev
1443 PPCODE:
1444{
1445 dREQ;
1446
1447 req->type = REQ_MKNOD;
1448 req->data = newSVsv (pathname);
1449 req->dataptr = SvPVbyte_nolen (req->data);
1450 req->mode = (mode_t)mode;
1451 req->offset = dev;
1452
1453 REQ_SEND;
1454}
1455
1456void
1258aio_sleep (delay,callback=&PL_sv_undef) 1457aio_busy (delay,callback=&PL_sv_undef)
1259 double delay 1458 double delay
1260 SV * callback 1459 SV * callback
1261 PPCODE: 1460 PPCODE:
1262{ 1461{
1263 dREQ; 1462 dREQ;
1264 1463
1265 req->type = REQ_SLEEP; 1464 req->type = REQ_BUSY;
1266 req->fd = delay < 0. ? 0 : delay; 1465 req->fd = delay < 0. ? 0 : delay;
1267 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1466 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1268 1467
1269 REQ_SEND; 1468 REQ_SEND;
1270} 1469}
… …
1293 req->type = REQ_NOP; 1492 req->type = REQ_NOP;
1294 1493
1295 REQ_SEND; 1494 REQ_SEND;
1296} 1495}
1297 1496
1298#if 0 1497int
1299 1498aioreq_pri (int pri = 0)
1300void 1499 PROTOTYPE: ;$
1301aio_pri (int pri = DEFAULT_PRI)
1302 CODE: 1500 CODE:
1501 RETVAL = next_pri - PRI_BIAS;
1502 if (items > 0)
1503 {
1303 if (pri < PRI_MIN) pri = PRI_MIN; 1504 if (pri < PRI_MIN) pri = PRI_MIN;
1304 if (pri > PRI_MAX) pri = PRI_MAX; 1505 if (pri > PRI_MAX) pri = PRI_MAX;
1305 next_pri = pri + PRI_BIAS; 1506 next_pri = pri + PRI_BIAS;
1507 }
1508 OUTPUT:
1509 RETVAL
1306 1510
1307#endif 1511void
1512aioreq_nice (int nice = 0)
1513 CODE:
1514 nice = next_pri - nice;
1515 if (nice < PRI_MIN) nice = PRI_MIN;
1516 if (nice > PRI_MAX) nice = PRI_MAX;
1517 next_pri = nice + PRI_BIAS;
1308 1518
1309void 1519void
1310flush () 1520flush ()
1311 PROTOTYPE: 1521 PROTOTYPE:
1312 CODE: 1522 CODE:
1313 while (nreqs) 1523 while (nreqs)
1314 { 1524 {
1315 poll_wait (); 1525 poll_wait ();
1316 poll_cb (); 1526 poll_cb (0);
1317 } 1527 }
1318 1528
1319void 1529void
1320poll() 1530poll()
1321 PROTOTYPE: 1531 PROTOTYPE:
1322 CODE: 1532 CODE:
1323 if (nreqs) 1533 if (nreqs)
1324 { 1534 {
1325 poll_wait (); 1535 poll_wait ();
1326 poll_cb (); 1536 poll_cb (0);
1327 } 1537 }
1328 1538
1329int 1539int
1330poll_fileno() 1540poll_fileno()
1331 PROTOTYPE: 1541 PROTOTYPE:
… …
1336 1546
1337int 1547int
1338poll_cb(...) 1548poll_cb(...)
1339 PROTOTYPE: 1549 PROTOTYPE:
1340 CODE: 1550 CODE:
1341 RETVAL = poll_cb (); 1551 RETVAL = poll_cb (0);
1552 OUTPUT:
1553 RETVAL
1554
1555int
1556poll_some(int max = 0)
1557 PROTOTYPE: $
1558 CODE:
1559 RETVAL = poll_cb (max);
1342 OUTPUT: 1560 OUTPUT:
1343 RETVAL 1561 RETVAL
1344 1562
1345void 1563void
1346poll_wait() 1564poll_wait()
… …
1355 CODE: 1573 CODE:
1356 RETVAL = nreqs; 1574 RETVAL = nreqs;
1357 OUTPUT: 1575 OUTPUT:
1358 RETVAL 1576 RETVAL
1359 1577
1578int
1579nready()
1580 PROTOTYPE:
1581 CODE:
1582 RETVAL = get_nready ();
1583 OUTPUT:
1584 RETVAL
1585
1586int
1587npending()
1588 PROTOTYPE:
1589 CODE:
1590 RETVAL = get_npending ();
1591 OUTPUT:
1592 RETVAL
1593
1360PROTOTYPES: DISABLE 1594PROTOTYPES: DISABLE
1361 1595
1362MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1596MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1363 1597
1364void 1598void
1365cancel (aio_req_ornot req) 1599cancel (aio_req_ornot req)
1366 PROTOTYPE:
1367 CODE: 1600 CODE:
1368 req_cancel (req); 1601 req_cancel (req);
1369 1602
1370void 1603void
1371cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1604cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
… …
1407 } 1640 }
1408 } 1641 }
1409} 1642}
1410 1643
1411void 1644void
1645cancel_subs (aio_req_ornot req)
1646 CODE:
1647 req_cancel_subs (req);
1648
1649void
1412result (aio_req grp, ...) 1650result (aio_req grp, ...)
1413 CODE: 1651 CODE:
1414{ 1652{
1415 int i; 1653 int i;
1654 AV *av;
1655
1656 grp->errorno = errno;
1657
1416 AV *av = newAV (); 1658 av = newAV ();
1417 1659
1418 for (i = 1; i < items; ++i ) 1660 for (i = 1; i < items; ++i )
1419 av_push (av, newSVsv (ST (i))); 1661 av_push (av, newSVsv (ST (i)));
1420 1662
1421 SvREFCNT_dec (grp->data); 1663 SvREFCNT_dec (grp->data);
1422 grp->data = (SV *)av; 1664 grp->data = (SV *)av;
1423} 1665}
1424 1666
1425void 1667void
1668errno (aio_req grp, int errorno = errno)
1669 CODE:
1670 grp->errorno = errorno;
1671
1672void
1426feed_limit (aio_req grp, int limit) 1673limit (aio_req grp, int limit)
1427 CODE: 1674 CODE:
1428 grp->fd2 = limit; 1675 grp->fd2 = limit;
1429 aio_grp_feed (grp); 1676 aio_grp_feed (grp);
1430 1677
1431void 1678void

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