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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.77 by root, Thu Oct 26 13:25:40 2006 UTC vs.
Revision 1.83 by root, Sat Oct 28 00:17:30 2006 UTC

… …
61# define STACKSIZE PTHREAD_STACK_MIN 61# define STACKSIZE PTHREAD_STACK_MIN
62#else 62#else
63# define STACKSIZE 16384 63# define STACKSIZE 16384
64#endif 64#endif
65 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
66/* buffer size for various temporary buffers */ 78/* buffer size for various temporary buffers */
67#define AIO_BUFSIZE 65536 79#define AIO_BUFSIZE 65536
68 80
69#define dBUF \ 81#define dBUF \
70 char *aio_buf; \ 82 char *aio_buf; \
… …
80 REQ_READ, REQ_WRITE, REQ_READAHEAD, 92 REQ_READ, REQ_WRITE, REQ_READAHEAD,
81 REQ_SENDFILE, 93 REQ_SENDFILE,
82 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 94 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
83 REQ_FSYNC, REQ_FDATASYNC, 95 REQ_FSYNC, REQ_FDATASYNC,
84 REQ_UNLINK, REQ_RMDIR, REQ_RENAME, 96 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
85 REQ_READDIR, 97 REQ_MKNOD, REQ_READDIR,
86 REQ_LINK, REQ_SYMLINK, 98 REQ_LINK, REQ_SYMLINK,
87 REQ_GROUP, REQ_NOP, 99 REQ_GROUP, REQ_NOP,
88 REQ_BUSY, 100 REQ_BUSY,
89}; 101};
90 102
… …
132 NUM_PRI = PRI_MAX + PRI_BIAS + 1, 144 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133}; 145};
134 146
135static int next_pri = DEFAULT_PRI + PRI_BIAS; 147static int next_pri = DEFAULT_PRI + PRI_BIAS;
136 148
137static int started, wanted; 149static unsigned int started, wanted;
138static volatile int nreqs;
139static int respipe [2];
140 150
141#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 151#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
142# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP 152# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
143#else 153#else
144# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER 154# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
… …
185 wrk->prev->next = wrk->next; 195 wrk->prev->next = wrk->next;
186 196
187 free (wrk); 197 free (wrk);
188} 198}
189 199
200static volatile unsigned int nreqs, nready, npending;
201static volatile unsigned int max_outstanding = 0xffffffff;
202static int respipe [2];
203
190static pthread_mutex_t reslock = AIO_MUTEX_INIT; 204static pthread_mutex_t reslock = AIO_MUTEX_INIT;
191static pthread_mutex_t reqlock = AIO_MUTEX_INIT; 205static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
192static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 206static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
207
208#if WORDREAD_UNSAFE
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
193 238
194/* 239/*
195 * a somewhat faster data structure might be nice, but 240 * a somewhat faster data structure might be nice, but
196 * with 8 priorities this actually needs <20 insns 241 * with 8 priorities this actually needs <20 insns
197 * per shift, the most expensive operation. 242 * per shift, the most expensive operation.
… …
318 req_invoke (grp); 363 req_invoke (grp);
319 req_free (grp); 364 req_free (grp);
320 } 365 }
321} 366}
322 367
323static void poll_wait ()
324{
325 fd_set rfd;
326
327 while (nreqs)
328 {
329 int size;
330#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
331 LOCK (reslock);
332#endif
333 size = res_queue.size;
334#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
335 UNLOCK (reslock);
336#endif
337
338 if (size)
339 return;
340
341 FD_ZERO(&rfd);
342 FD_SET(respipe [0], &rfd);
343
344 select (respipe [0] + 1, &rfd, 0, 0, 0);
345 }
346}
347
348static void req_invoke (aio_req req) 368static void req_invoke (aio_req req)
349{ 369{
350 dSP; 370 dSP;
351 371
352 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 372 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
353 { 373 {
354 errno = req->errorno;
355
356 ENTER; 374 ENTER;
357 SAVETMPS; 375 SAVETMPS;
358 PUSHMARK (SP); 376 PUSHMARK (SP);
359 EXTEND (SP, 1); 377 EXTEND (SP, 1);
360 378
… …
425 default: 443 default:
426 PUSHs (sv_2mortal (newSViv (req->result))); 444 PUSHs (sv_2mortal (newSViv (req->result)));
427 break; 445 break;
428 } 446 }
429 447
448 errno = req->errorno;
430 449
431 PUTBACK; 450 PUTBACK;
432 call_sv (req->callback, G_VOID | G_EVAL); 451 call_sv (req->callback, G_VOID | G_EVAL);
433 SPAGAIN; 452 SPAGAIN;
434 453
… …
496 req->flags |= FLAG_CANCELLED; 515 req->flags |= FLAG_CANCELLED;
497 516
498 req_cancel_subs (req); 517 req_cancel_subs (req);
499} 518}
500 519
520static void *aio_proc(void *arg);
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)
545 {
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);
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 LOCK (reqlock);
616 reqq_push (&req_queue, req);
617 pthread_cond_signal (&reqwait);
618 UNLOCK (reqlock);
619
620 LOCK (wrklock);
621 --started;
622 UNLOCK (wrklock);
623}
624
625static void min_parallel (int nthreads)
626{
627 if (wanted < nthreads)
628 wanted = nthreads;
629}
630
631static void max_parallel (int nthreads)
632{
633 if (wanted > nthreads)
634 wanted = nthreads;
635
636 while (started > wanted)
637 end_thread ();
638}
639
640static void poll_wait ()
641{
642 fd_set rfd;
643
644 while (nreqs)
645 {
646 int size;
647 if (WORDREAD_UNSAFE) LOCK (reslock);
648 size = res_queue.size;
649 if (WORDREAD_UNSAFE) UNLOCK (reslock);
650
651 if (size)
652 return;
653
654 maybe_start_thread ();
655
656 FD_ZERO(&rfd);
657 FD_SET(respipe [0], &rfd);
658
659 select (respipe [0] + 1, &rfd, 0, 0, 0);
660 }
661}
662
501static int poll_cb (int max) 663static int poll_cb (int max)
502{ 664{
503 dSP; 665 dSP;
504 int count = 0; 666 int count = 0;
505 int do_croak = 0; 667 int do_croak = 0;
506 aio_req req; 668 aio_req req;
507 669
670 for (;;)
671 {
508 while (max <= 0 || count < max) 672 while (max <= 0 || count < max)
509 {
510 LOCK (reslock);
511 req = reqq_shift (&res_queue);
512
513 if (req)
514 { 673 {
674 maybe_start_thread ();
675
676 LOCK (reslock);
677 req = reqq_shift (&res_queue);
678
515 if (!res_queue.size) 679 if (req)
516 { 680 {
681 --npending;
682
683 if (!res_queue.size)
684 {
517 /* read any signals sent by the worker threads */ 685 /* read any signals sent by the worker threads */
518 char buf [32]; 686 char buf [32];
519 while (read (respipe [0], buf, 32) == 32) 687 while (read (respipe [0], buf, 32) == 32)
688 ;
520 ; 689 }
521 } 690 }
691
692 UNLOCK (reslock);
693
694 if (!req)
695 break;
696
697 --nreqs;
698
699 if (req->type == REQ_GROUP && req->length)
700 {
701 req->fd = 1; /* mark request as delayed */
702 continue;
703 }
704 else
705 {
706 if (req->type == REQ_READ)
707 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
708
709 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
710 SvREADONLY_off (req->data);
711
712 if (req->statdata)
713 {
714 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
715 PL_laststatval = req->result;
716 PL_statcache = *(req->statdata);
717 }
718
719 req_invoke (req);
720
721 count++;
722 }
723
724 req_free (req);
522 } 725 }
523 726
524 UNLOCK (reslock); 727 if (nreqs <= max_outstanding)
525
526 if (!req)
527 break; 728 break;
528 729
529 --nreqs; 730 poll_wait ();
530 731
531 if (req->type == REQ_QUIT) 732 max = 0;
532 started--;
533 else if (req->type == REQ_GROUP && req->length)
534 {
535 req->fd = 1; /* mark request as delayed */
536 continue;
537 }
538 else
539 {
540 if (req->type == REQ_READ)
541 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
542
543 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
544 SvREADONLY_off (req->data);
545
546 if (req->statdata)
547 {
548 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
549 PL_laststatval = req->result;
550 PL_statcache = *(req->statdata);
551 }
552
553 req_invoke (req);
554
555 count++;
556 }
557
558 req_free (req);
559 } 733 }
560 734
561 return count; 735 return count;
562}
563
564static void *aio_proc(void *arg);
565
566static void start_thread (void)
567{
568 sigset_t fullsigset, oldsigset;
569 pthread_attr_t attr;
570
571 worker *wrk = calloc (1, sizeof (worker));
572
573 if (!wrk)
574 croak ("unable to allocate worker thread data");
575
576 pthread_attr_init (&attr);
577 pthread_attr_setstacksize (&attr, STACKSIZE);
578 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
579
580 sigfillset (&fullsigset);
581
582 LOCK (wrklock);
583 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
584
585 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
586 {
587 wrk->prev = &wrk_first;
588 wrk->next = wrk_first.next;
589 wrk_first.next->prev = wrk;
590 wrk_first.next = wrk;
591 started++;
592 }
593 else
594 free (wrk);
595
596 sigprocmask (SIG_SETMASK, &oldsigset, 0);
597 UNLOCK (wrklock);
598}
599
600static void req_send (aio_req req)
601{
602 while (started < wanted && nreqs >= started)
603 start_thread ();
604
605 ++nreqs;
606
607 LOCK (reqlock);
608 reqq_push (&req_queue, req);
609 pthread_cond_signal (&reqwait);
610 UNLOCK (reqlock);
611}
612
613static void end_thread (void)
614{
615 aio_req req;
616
617 Newz (0, req, 1, aio_cb);
618
619 req->type = REQ_QUIT;
620 req->pri = PRI_MAX + PRI_BIAS;
621
622 req_send (req);
623}
624
625static void min_parallel (int nthreads)
626{
627 if (wanted < nthreads)
628 wanted = nthreads;
629}
630
631static void max_parallel (int nthreads)
632{
633 int cur = started;
634
635 if (wanted > nthreads)
636 wanted = nthreads;
637
638 while (cur > wanted)
639 {
640 end_thread ();
641 cur--;
642 }
643
644 while (started > wanted)
645 {
646 poll_wait ();
647 poll_cb (0);
648 }
649} 736}
650 737
651static void create_pipe () 738static void create_pipe ()
652{ 739{
653 if (pipe (respipe)) 740 if (pipe (respipe))
… …
917/*****************************************************************************/ 1004/*****************************************************************************/
918 1005
919static void *aio_proc (void *thr_arg) 1006static void *aio_proc (void *thr_arg)
920{ 1007{
921 aio_req req; 1008 aio_req req;
922 int type;
923 worker *self = (worker *)thr_arg; 1009 worker *self = (worker *)thr_arg;
924 1010
925 do 1011 for (;;)
926 { 1012 {
927 LOCK (reqlock); 1013 LOCK (reqlock);
928 1014
929 for (;;) 1015 for (;;)
930 { 1016 {
… …
934 break; 1020 break;
935 1021
936 pthread_cond_wait (&reqwait, &reqlock); 1022 pthread_cond_wait (&reqwait, &reqlock);
937 } 1023 }
938 1024
1025 --nready;
1026
939 UNLOCK (reqlock); 1027 UNLOCK (reqlock);
940 1028
941 errno = 0; /* strictly unnecessary */ 1029 errno = 0; /* strictly unnecessary */
942 type = req->type; /* remember type for QUIT check */
943 1030
944 if (!(req->flags & FLAG_CANCELLED)) 1031 if (!(req->flags & FLAG_CANCELLED))
945 switch (type) 1032 switch (req->type)
946 { 1033 {
947 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 1034 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
948 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 1035 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
949 1036
950 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 1037 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
… …
959 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 1046 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
960 case REQ_RMDIR: req->result = rmdir (req->dataptr); break; 1047 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
961 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; 1048 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
962 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; 1049 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
963 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 1050 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1051 case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
964 1052
965 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 1053 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
966 case REQ_FSYNC: req->result = fsync (req->fd); break; 1054 case REQ_FSYNC: req->result = fsync (req->fd); break;
967 case REQ_READDIR: scandir_ (req, self); break; 1055 case REQ_READDIR: scandir_ (req, self); break;
968 1056
… …
976 req->result = select (0, 0, 0, 0, &tv); 1064 req->result = select (0, 0, 0, 0, &tv);
977 } 1065 }
978 1066
979 case REQ_GROUP: 1067 case REQ_GROUP:
980 case REQ_NOP: 1068 case REQ_NOP:
1069 break;
1070
981 case REQ_QUIT: 1071 case REQ_QUIT:
1072 LOCK (wrklock);
1073 worker_free (self);
1074 --started;
1075 UNLOCK (wrklock);
982 break; 1076 return 0;
983 1077
984 default: 1078 default:
985 req->result = ENOSYS; 1079 req->result = ENOSYS;
986 break; 1080 break;
987 } 1081 }
988 1082
989 req->errorno = errno; 1083 req->errorno = errno;
990 1084
991 LOCK (reslock); 1085 LOCK (reslock);
992 1086
1087 ++npending;
1088
993 if (!reqq_push (&res_queue, req)) 1089 if (!reqq_push (&res_queue, req))
994 /* write a dummy byte to the pipe so fh becomes ready */ 1090 /* write a dummy byte to the pipe so fh becomes ready */
995 write (respipe [1], &respipe, 1); 1091 write (respipe [1], &respipe, 1);
996 1092
997 self->req = 0; 1093 self->req = 0;
998 worker_clear (self); 1094 worker_clear (self);
999 1095
1000 UNLOCK (reslock); 1096 UNLOCK (reslock);
1001 } 1097 }
1002 while (type != REQ_QUIT);
1003
1004 LOCK (wrklock);
1005 worker_free (self);
1006 UNLOCK (wrklock);
1007
1008 return 0;
1009} 1098}
1010 1099
1011/*****************************************************************************/ 1100/*****************************************************************************/
1012 1101
1013static void atfork_prepare (void) 1102static void atfork_prepare (void)
… …
1093PROTOTYPES: ENABLE 1182PROTOTYPES: ENABLE
1094 1183
1095BOOT: 1184BOOT:
1096{ 1185{
1097 HV *stash = gv_stashpv ("IO::AIO", 1); 1186 HV *stash = gv_stashpv ("IO::AIO", 1);
1187
1098 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1188 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1099 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1189 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1100 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); 1190 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1191 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1192 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1193 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1101 1194
1102 create_pipe (); 1195 create_pipe ();
1103 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1196 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104}
1105 1197
1198 start_thread ();
1199}
1200
1106void 1201void
1107min_parallel (nthreads) 1202min_parallel (int nthreads)
1108 int nthreads
1109 PROTOTYPE: $ 1203 PROTOTYPE: $
1110 1204
1111void 1205void
1112max_parallel (nthreads) 1206max_parallel (int nthreads)
1113 int nthreads
1114 PROTOTYPE: $ 1207 PROTOTYPE: $
1208
1209int
1210max_outstanding (int maxreqs)
1211 PROTOTYPE: $
1212 CODE:
1213 RETVAL = max_outstanding;
1214 max_outstanding = maxreqs;
1215 OUTPUT:
1216 RETVAL
1115 1217
1116void 1218void
1117aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1219aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1118 SV * pathname 1220 SV * pathname
1119 int flags 1221 int flags
… …
1334 1436
1335 REQ_SEND; 1437 REQ_SEND;
1336} 1438}
1337 1439
1338void 1440void
1441aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1442 SV * pathname
1443 SV * callback
1444 UV mode
1445 UV dev
1446 PPCODE:
1447{
1448 dREQ;
1449
1450 req->type = REQ_MKNOD;
1451 req->data = newSVsv (pathname);
1452 req->dataptr = SvPVbyte_nolen (req->data);
1453 req->mode = (mode_t)mode;
1454 req->offset = dev;
1455
1456 REQ_SEND;
1457}
1458
1459void
1339aio_busy (delay,callback=&PL_sv_undef) 1460aio_busy (delay,callback=&PL_sv_undef)
1340 double delay 1461 double delay
1341 SV * callback 1462 SV * callback
1342 PPCODE: 1463 PPCODE:
1343{ 1464{
… …
1374 req->type = REQ_NOP; 1495 req->type = REQ_NOP;
1375 1496
1376 REQ_SEND; 1497 REQ_SEND;
1377} 1498}
1378 1499
1379void 1500int
1380aioreq_pri (int pri = DEFAULT_PRI) 1501aioreq_pri (int pri = 0)
1381 CODE: 1502 PROTOTYPE: ;$
1503 CODE:
1504 RETVAL = next_pri - PRI_BIAS;
1505 if (items > 0)
1506 {
1382 if (pri < PRI_MIN) pri = PRI_MIN; 1507 if (pri < PRI_MIN) pri = PRI_MIN;
1383 if (pri > PRI_MAX) pri = PRI_MAX; 1508 if (pri > PRI_MAX) pri = PRI_MAX;
1384 next_pri = pri + PRI_BIAS; 1509 next_pri = pri + PRI_BIAS;
1510 }
1511 OUTPUT:
1512 RETVAL
1385 1513
1386void 1514void
1387aioreq_nice (int nice = 0) 1515aioreq_nice (int nice = 0)
1388 CODE: 1516 CODE:
1389 nice = next_pri - nice; 1517 nice = next_pri - nice;
1390 if (nice < PRI_MIN) nice = PRI_MIN; 1518 if (nice < PRI_MIN) nice = PRI_MIN;
1391 if (nice > PRI_MAX) nice = PRI_MAX; 1519 if (nice > PRI_MAX) nice = PRI_MAX;
1392 next_pri = nice + PRI_BIAS; 1520 next_pri = nice + PRI_BIAS;
1393 1521
1394void 1522void
1395flush () 1523flush ()
1396 PROTOTYPE: 1524 PROTOTYPE:
1397 CODE: 1525 CODE:
… …
1448 CODE: 1576 CODE:
1449 RETVAL = nreqs; 1577 RETVAL = nreqs;
1450 OUTPUT: 1578 OUTPUT:
1451 RETVAL 1579 RETVAL
1452 1580
1581int
1582nready()
1583 PROTOTYPE:
1584 CODE:
1585 RETVAL = get_nready ();
1586 OUTPUT:
1587 RETVAL
1588
1589int
1590npending()
1591 PROTOTYPE:
1592 CODE:
1593 RETVAL = get_npending ();
1594 OUTPUT:
1595 RETVAL
1596
1453PROTOTYPES: DISABLE 1597PROTOTYPES: DISABLE
1454 1598
1455MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1599MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1456 1600
1457void 1601void
… …
1508void 1652void
1509result (aio_req grp, ...) 1653result (aio_req grp, ...)
1510 CODE: 1654 CODE:
1511{ 1655{
1512 int i; 1656 int i;
1657 AV *av;
1658
1659 grp->errorno = errno;
1660
1513 AV *av = newAV (); 1661 av = newAV ();
1514 1662
1515 for (i = 1; i < items; ++i ) 1663 for (i = 1; i < items; ++i )
1516 av_push (av, newSVsv (ST (i))); 1664 av_push (av, newSVsv (ST (i)));
1517 1665
1518 SvREFCNT_dec (grp->data); 1666 SvREFCNT_dec (grp->data);
1519 grp->data = (SV *)av; 1667 grp->data = (SV *)av;
1520} 1668}
1669
1670void
1671errno (aio_req grp, int errorno = errno)
1672 CODE:
1673 grp->errorno = errorno;
1521 1674
1522void 1675void
1523limit (aio_req grp, int limit) 1676limit (aio_req grp, int limit)
1524 CODE: 1677 CODE:
1525 grp->fd2 = limit; 1678 grp->fd2 = limit;

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