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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.78 by root, Thu Oct 26 14:35:34 2006 UTC vs.
Revision 1.84 by root, Sat Oct 28 01:24:19 2006 UTC

… …
43# else 43# else
44# error sendfile support requested but not available 44# error sendfile support requested but not available
45# endif 45# endif
46#endif 46#endif
47 47
48/* number of seconds after which idle threads exit */
49#define IDLE_TIMEOUT 10
50
48/* used for struct dirent, AIX doesn't provide it */ 51/* used for struct dirent, AIX doesn't provide it */
49#ifndef NAME_MAX 52#ifndef NAME_MAX
50# define NAME_MAX 4096 53# define NAME_MAX 4096
51#endif 54#endif
52 55
… …
59# define STACKSIZE 65536 62# define STACKSIZE 65536
60#elif __i386 || __x86_64 /* 16k is unreasonably high :( */ 63#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61# define STACKSIZE PTHREAD_STACK_MIN 64# define STACKSIZE PTHREAD_STACK_MIN
62#else 65#else
63# define STACKSIZE 16384 66# define STACKSIZE 16384
67#endif
68
69/* wether word reads are potentially non-atomic.
70 * this is conservatice, likely most arches this runs
71 * on have atomic word read/writes.
72 */
73#ifndef WORDREAD_UNSAFE
74# if __i386 || __x86_64
75# define WORDREAD_UNSAFE 0
76# else
77# define WORDREAD_UNSAFE 1
78# endif
64#endif 79#endif
65 80
66/* buffer size for various temporary buffers */ 81/* buffer size for various temporary buffers */
67#define AIO_BUFSIZE 65536 82#define AIO_BUFSIZE 65536
68 83
… …
80 REQ_READ, REQ_WRITE, REQ_READAHEAD, 95 REQ_READ, REQ_WRITE, REQ_READAHEAD,
81 REQ_SENDFILE, 96 REQ_SENDFILE,
82 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 97 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
83 REQ_FSYNC, REQ_FDATASYNC, 98 REQ_FSYNC, REQ_FDATASYNC,
84 REQ_UNLINK, REQ_RMDIR, REQ_RENAME, 99 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
85 REQ_READDIR, 100 REQ_MKNOD, REQ_READDIR,
86 REQ_LINK, REQ_SYMLINK, 101 REQ_LINK, REQ_SYMLINK,
87 REQ_GROUP, REQ_NOP, 102 REQ_GROUP, REQ_NOP,
88 REQ_BUSY, 103 REQ_BUSY,
89}; 104};
90 105
… …
132 NUM_PRI = PRI_MAX + PRI_BIAS + 1, 147 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133}; 148};
134 149
135static int next_pri = DEFAULT_PRI + PRI_BIAS; 150static int next_pri = DEFAULT_PRI + PRI_BIAS;
136 151
137static unsigned int started, wanted; 152static unsigned int started, idle, wanted;
138static volatile unsigned int nreqs;
139static volatile unsigned int max_outstanding = 0xffffffff;
140static int respipe [2];
141 153
142#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 154#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
143# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP 155# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
144#else 156#else
145# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER 157# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
… …
186 wrk->prev->next = wrk->next; 198 wrk->prev->next = wrk->next;
187 199
188 free (wrk); 200 free (wrk);
189} 201}
190 202
203static volatile unsigned int nreqs, nready, npending;
204static volatile unsigned int max_idle = 4;
205static volatile unsigned int max_outstanding = 0xffffffff;
206static int respipe [2];
207
191static pthread_mutex_t reslock = AIO_MUTEX_INIT; 208static pthread_mutex_t reslock = AIO_MUTEX_INIT;
192static pthread_mutex_t reqlock = AIO_MUTEX_INIT; 209static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
193static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 210static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
211
212#if WORDREAD_UNSAFE
213
214static unsigned int get_nready ()
215{
216 unsigned int retval;
217
218 LOCK (reqlock);
219 retval = nready;
220 UNLOCK (reqlock);
221
222 return retval;
223}
224
225static unsigned int get_npending ()
226{
227 unsigned int retval;
228
229 LOCK (reslock);
230 retval = npending;
231 UNLOCK (reslock);
232
233 return retval;
234}
235
236#else
237
238# define get_nready() nready
239# define get_npending() npending
240
241#endif
194 242
195/* 243/*
196 * a somewhat faster data structure might be nice, but 244 * a somewhat faster data structure might be nice, but
197 * with 8 priorities this actually needs <20 insns 245 * with 8 priorities this actually needs <20 insns
198 * per shift, the most expensive operation. 246 * per shift, the most expensive operation.
… …
319 req_invoke (grp); 367 req_invoke (grp);
320 req_free (grp); 368 req_free (grp);
321 } 369 }
322} 370}
323 371
324static void poll_wait ()
325{
326 fd_set rfd;
327
328 while (nreqs)
329 {
330 int size;
331#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
332 LOCK (reslock);
333#endif
334 size = res_queue.size;
335#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
336 UNLOCK (reslock);
337#endif
338
339 if (size)
340 return;
341
342 FD_ZERO(&rfd);
343 FD_SET(respipe [0], &rfd);
344
345 select (respipe [0] + 1, &rfd, 0, 0, 0);
346 }
347}
348
349static void req_invoke (aio_req req) 372static void req_invoke (aio_req req)
350{ 373{
351 dSP; 374 dSP;
352 375
353 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 376 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
354 { 377 {
355 errno = req->errorno;
356
357 ENTER; 378 ENTER;
358 SAVETMPS; 379 SAVETMPS;
359 PUSHMARK (SP); 380 PUSHMARK (SP);
360 EXTEND (SP, 1); 381 EXTEND (SP, 1);
361 382
… …
426 default: 447 default:
427 PUSHs (sv_2mortal (newSViv (req->result))); 448 PUSHs (sv_2mortal (newSViv (req->result)));
428 break; 449 break;
429 } 450 }
430 451
452 errno = req->errorno;
431 453
432 PUTBACK; 454 PUTBACK;
433 call_sv (req->callback, G_VOID | G_EVAL); 455 call_sv (req->callback, G_VOID | G_EVAL);
434 SPAGAIN; 456 SPAGAIN;
435 457
… …
497 req->flags |= FLAG_CANCELLED; 519 req->flags |= FLAG_CANCELLED;
498 520
499 req_cancel_subs (req); 521 req_cancel_subs (req);
500} 522}
501 523
524static void *aio_proc(void *arg);
525
526static void start_thread (void)
527{
528 sigset_t fullsigset, oldsigset;
529 pthread_attr_t attr;
530
531 worker *wrk = calloc (1, sizeof (worker));
532
533 if (!wrk)
534 croak ("unable to allocate worker thread data");
535
536 pthread_attr_init (&attr);
537 pthread_attr_setstacksize (&attr, STACKSIZE);
538 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
539#ifdef PTHREAD_SCOPE_PROCESS
540 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
541#endif
542
543 sigfillset (&fullsigset);
544
545 LOCK (wrklock);
546 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
547
548 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
549 {
550 wrk->prev = &wrk_first;
551 wrk->next = wrk_first.next;
552 wrk_first.next->prev = wrk;
553 wrk_first.next = wrk;
554 ++started;
555 }
556 else
557 free (wrk);
558
559 sigprocmask (SIG_SETMASK, &oldsigset, 0);
560 UNLOCK (wrklock);
561}
562
563static void maybe_start_thread ()
564{
565 if (started >= wanted)
566 return;
567
568 /* todo: maybe use idle here, but might be less exact */
569 if ((int)nready <= (int)started - (int)(nreqs - get_nready () - get_npending ()))
570 return;
571
572 start_thread ();
573}
574
575static void req_send (aio_req req)
576{
577 ++nreqs;
578
579 LOCK (reqlock);
580 ++nready;
581 reqq_push (&req_queue, req);
582 pthread_cond_signal (&reqwait);
583 UNLOCK (reqlock);
584
585 maybe_start_thread ();
586}
587
588static void end_thread (void)
589{
590 aio_req req;
591
592 Newz (0, req, 1, aio_cb);
593
594 req->type = REQ_QUIT;
595 req->pri = PRI_MAX + PRI_BIAS;
596
597 LOCK (reqlock);
598 reqq_push (&req_queue, req);
599 pthread_cond_signal (&reqwait);
600 UNLOCK (reqlock);
601
602 LOCK (wrklock);
603 --started;
604 UNLOCK (wrklock);
605}
606
607static void min_parallel (int nthreads)
608{
609 if (wanted < nthreads)
610 wanted = nthreads;
611}
612
613static void max_parallel (int nthreads)
614{
615 if (wanted > nthreads)
616 wanted = nthreads;
617
618 while (started > wanted)
619 end_thread ();
620}
621
622static void poll_wait ()
623{
624 fd_set rfd;
625
626 while (nreqs)
627 {
628 int size;
629 if (WORDREAD_UNSAFE) LOCK (reslock);
630 size = res_queue.size;
631 if (WORDREAD_UNSAFE) UNLOCK (reslock);
632
633 if (size)
634 return;
635
636 maybe_start_thread ();
637
638 FD_ZERO(&rfd);
639 FD_SET(respipe [0], &rfd);
640
641 select (respipe [0] + 1, &rfd, 0, 0, 0);
642 }
643}
644
502static int poll_cb (int max) 645static int poll_cb (int max)
503{ 646{
504 dSP; 647 dSP;
505 int count = 0; 648 int count = 0;
506 int do_croak = 0; 649 int do_croak = 0;
… …
508 651
509 for (;;) 652 for (;;)
510 { 653 {
511 while (max <= 0 || count < max) 654 while (max <= 0 || count < max)
512 { 655 {
656 maybe_start_thread ();
657
513 LOCK (reslock); 658 LOCK (reslock);
514 req = reqq_shift (&res_queue); 659 req = reqq_shift (&res_queue);
515 660
516 if (req) 661 if (req)
517 { 662 {
663 --npending;
664
518 if (!res_queue.size) 665 if (!res_queue.size)
519 { 666 {
520 /* read any signals sent by the worker threads */ 667 /* read any signals sent by the worker threads */
521 char buf [32]; 668 char buf [32];
522 while (read (respipe [0], buf, 32) == 32) 669 while (read (respipe [0], buf, 32) == 32)
… …
529 if (!req) 676 if (!req)
530 break; 677 break;
531 678
532 --nreqs; 679 --nreqs;
533 680
534 if (req->type == REQ_QUIT)
535 --started;
536 else if (req->type == REQ_GROUP && req->length) 681 if (req->type == REQ_GROUP && req->length)
537 { 682 {
538 req->fd = 1; /* mark request as delayed */ 683 req->fd = 1; /* mark request as delayed */
539 continue; 684 continue;
540 } 685 }
541 else 686 else
… …
568 713
569 max = 0; 714 max = 0;
570 } 715 }
571 716
572 return count; 717 return count;
573}
574
575static void *aio_proc(void *arg);
576
577static void start_thread (void)
578{
579 sigset_t fullsigset, oldsigset;
580 pthread_attr_t attr;
581
582 worker *wrk = calloc (1, sizeof (worker));
583
584 if (!wrk)
585 croak ("unable to allocate worker thread data");
586
587 pthread_attr_init (&attr);
588 pthread_attr_setstacksize (&attr, STACKSIZE);
589 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
590
591 sigfillset (&fullsigset);
592
593 LOCK (wrklock);
594 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
595
596 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
597 {
598 wrk->prev = &wrk_first;
599 wrk->next = wrk_first.next;
600 wrk_first.next->prev = wrk;
601 wrk_first.next = wrk;
602 ++started;
603 }
604 else
605 free (wrk);
606
607 sigprocmask (SIG_SETMASK, &oldsigset, 0);
608 UNLOCK (wrklock);
609}
610
611static void req_send (aio_req req)
612{
613 while (started < wanted && nreqs >= started)
614 start_thread ();
615
616 ++nreqs;
617
618 LOCK (reqlock);
619 reqq_push (&req_queue, req);
620 pthread_cond_signal (&reqwait);
621 UNLOCK (reqlock);
622}
623
624static void end_thread (void)
625{
626 aio_req req;
627
628 Newz (0, req, 1, aio_cb);
629
630 req->type = REQ_QUIT;
631 req->pri = PRI_MAX + PRI_BIAS;
632
633 req_send (req);
634}
635
636static void min_parallel (int nthreads)
637{
638 if (wanted < nthreads)
639 wanted = nthreads;
640}
641
642static void max_parallel (int nthreads)
643{
644 int cur = started;
645
646 if (wanted > nthreads)
647 wanted = nthreads;
648
649 while (cur > wanted)
650 {
651 end_thread ();
652 cur--;
653 }
654
655 while (started > wanted)
656 {
657 poll_wait ();
658 poll_cb (0);
659 }
660} 718}
661 719
662static void create_pipe () 720static void create_pipe ()
663{ 721{
664 if (pipe (respipe)) 722 if (pipe (respipe))
… …
928/*****************************************************************************/ 986/*****************************************************************************/
929 987
930static void *aio_proc (void *thr_arg) 988static void *aio_proc (void *thr_arg)
931{ 989{
932 aio_req req; 990 aio_req req;
933 int type; 991 struct timespec ts;
934 worker *self = (worker *)thr_arg; 992 worker *self = (worker *)thr_arg;
935 993
936 do 994 /* try to distribute timeouts somewhat evenly */
995 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
996 * (1000000000UL / 1024UL);
997
998 for (;;)
937 { 999 {
1000 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1001
938 LOCK (reqlock); 1002 LOCK (reqlock);
939 1003
940 for (;;) 1004 for (;;)
941 { 1005 {
942 self->req = req = reqq_shift (&req_queue); 1006 self->req = req = reqq_shift (&req_queue);
943 1007
944 if (req) 1008 if (req)
945 break; 1009 break;
946 1010
1011 ++idle;
1012
1013 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1014 == ETIMEDOUT)
1015 {
1016 if (idle > max_idle)
1017 {
1018 --idle;
1019 UNLOCK (reqlock);
1020 LOCK (wrklock);
1021 --started;
1022 UNLOCK (wrklock);
1023 goto quit;
1024 }
1025
1026 /* we are allowed to idle, so do so without any timeout */
947 pthread_cond_wait (&reqwait, &reqlock); 1027 pthread_cond_wait (&reqwait, &reqlock);
1028 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1029 }
1030
1031 --idle;
948 } 1032 }
1033
1034 --nready;
949 1035
950 UNLOCK (reqlock); 1036 UNLOCK (reqlock);
951 1037
952 errno = 0; /* strictly unnecessary */ 1038 errno = 0; /* strictly unnecessary */
953 type = req->type; /* remember type for QUIT check */
954 1039
955 if (!(req->flags & FLAG_CANCELLED)) 1040 if (!(req->flags & FLAG_CANCELLED))
956 switch (type) 1041 switch (req->type)
957 { 1042 {
958 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 1043 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
959 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 1044 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
960 1045
961 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 1046 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
… …
970 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 1055 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
971 case REQ_RMDIR: req->result = rmdir (req->dataptr); break; 1056 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
972 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; 1057 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
973 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; 1058 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
974 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 1059 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1060 case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
975 1061
976 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 1062 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
977 case REQ_FSYNC: req->result = fsync (req->fd); break; 1063 case REQ_FSYNC: req->result = fsync (req->fd); break;
978 case REQ_READDIR: scandir_ (req, self); break; 1064 case REQ_READDIR: scandir_ (req, self); break;
979 1065
… …
987 req->result = select (0, 0, 0, 0, &tv); 1073 req->result = select (0, 0, 0, 0, &tv);
988 } 1074 }
989 1075
990 case REQ_GROUP: 1076 case REQ_GROUP:
991 case REQ_NOP: 1077 case REQ_NOP:
1078 break;
1079
992 case REQ_QUIT: 1080 case REQ_QUIT:
993 break; 1081 goto quit;
994 1082
995 default: 1083 default:
996 req->result = ENOSYS; 1084 req->result = ENOSYS;
997 break; 1085 break;
998 } 1086 }
999 1087
1000 req->errorno = errno; 1088 req->errorno = errno;
1001 1089
1002 LOCK (reslock); 1090 LOCK (reslock);
1003 1091
1092 ++npending;
1093
1004 if (!reqq_push (&res_queue, req)) 1094 if (!reqq_push (&res_queue, req))
1005 /* write a dummy byte to the pipe so fh becomes ready */ 1095 /* write a dummy byte to the pipe so fh becomes ready */
1006 write (respipe [1], &respipe, 1); 1096 write (respipe [1], &respipe, 1);
1007 1097
1008 self->req = 0; 1098 self->req = 0;
1009 worker_clear (self); 1099 worker_clear (self);
1010 1100
1011 UNLOCK (reslock); 1101 UNLOCK (reslock);
1012 } 1102 }
1013 while (type != REQ_QUIT);
1014 1103
1104quit:
1015 LOCK (wrklock); 1105 LOCK (wrklock);
1016 worker_free (self); 1106 worker_free (self);
1017 UNLOCK (wrklock); 1107 UNLOCK (wrklock);
1018 1108
1019 return 0; 1109 return 0;
… …
1066 1156
1067 worker_clear (wrk); 1157 worker_clear (wrk);
1068 worker_free (wrk); 1158 worker_free (wrk);
1069 } 1159 }
1070 1160
1071 started = 0; 1161 started = 0;
1162 idle = 0;
1072 nreqs = 0; 1163 nreqs = 0;
1164 nready = 0;
1165 npending = 0;
1073 1166
1074 close (respipe [0]); 1167 close (respipe [0]);
1075 close (respipe [1]); 1168 close (respipe [1]);
1076 create_pipe (); 1169 create_pipe ();
1077 1170
… …
1104PROTOTYPES: ENABLE 1197PROTOTYPES: ENABLE
1105 1198
1106BOOT: 1199BOOT:
1107{ 1200{
1108 HV *stash = gv_stashpv ("IO::AIO", 1); 1201 HV *stash = gv_stashpv ("IO::AIO", 1);
1202
1109 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1203 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1110 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1204 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1111 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); 1205 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1206 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1207 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1208 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1112 1209
1113 create_pipe (); 1210 create_pipe ();
1114 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1211 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1115} 1212}
1116 1213
… …
1352 1449
1353 REQ_SEND; 1450 REQ_SEND;
1354} 1451}
1355 1452
1356void 1453void
1454aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1455 SV * pathname
1456 SV * callback
1457 UV mode
1458 UV dev
1459 PPCODE:
1460{
1461 dREQ;
1462
1463 req->type = REQ_MKNOD;
1464 req->data = newSVsv (pathname);
1465 req->dataptr = SvPVbyte_nolen (req->data);
1466 req->mode = (mode_t)mode;
1467 req->offset = dev;
1468
1469 REQ_SEND;
1470}
1471
1472void
1357aio_busy (delay,callback=&PL_sv_undef) 1473aio_busy (delay,callback=&PL_sv_undef)
1358 double delay 1474 double delay
1359 SV * callback 1475 SV * callback
1360 PPCODE: 1476 PPCODE:
1361{ 1477{
… …
1392 req->type = REQ_NOP; 1508 req->type = REQ_NOP;
1393 1509
1394 REQ_SEND; 1510 REQ_SEND;
1395} 1511}
1396 1512
1397void 1513int
1398aioreq_pri (int pri = DEFAULT_PRI) 1514aioreq_pri (int pri = 0)
1399 CODE: 1515 PROTOTYPE: ;$
1516 CODE:
1517 RETVAL = next_pri - PRI_BIAS;
1518 if (items > 0)
1519 {
1400 if (pri < PRI_MIN) pri = PRI_MIN; 1520 if (pri < PRI_MIN) pri = PRI_MIN;
1401 if (pri > PRI_MAX) pri = PRI_MAX; 1521 if (pri > PRI_MAX) pri = PRI_MAX;
1402 next_pri = pri + PRI_BIAS; 1522 next_pri = pri + PRI_BIAS;
1523 }
1524 OUTPUT:
1525 RETVAL
1403 1526
1404void 1527void
1405aioreq_nice (int nice = 0) 1528aioreq_nice (int nice = 0)
1406 CODE: 1529 CODE:
1407 nice = next_pri - nice; 1530 nice = next_pri - nice;
1408 if (nice < PRI_MIN) nice = PRI_MIN; 1531 if (nice < PRI_MIN) nice = PRI_MIN;
1409 if (nice > PRI_MAX) nice = PRI_MAX; 1532 if (nice > PRI_MAX) nice = PRI_MAX;
1410 next_pri = nice + PRI_BIAS; 1533 next_pri = nice + PRI_BIAS;
1411 1534
1412void 1535void
1413flush () 1536flush ()
1414 PROTOTYPE: 1537 PROTOTYPE:
1415 CODE: 1538 CODE:
… …
1466 CODE: 1589 CODE:
1467 RETVAL = nreqs; 1590 RETVAL = nreqs;
1468 OUTPUT: 1591 OUTPUT:
1469 RETVAL 1592 RETVAL
1470 1593
1594int
1595nready()
1596 PROTOTYPE:
1597 CODE:
1598 RETVAL = get_nready ();
1599 OUTPUT:
1600 RETVAL
1601
1602int
1603npending()
1604 PROTOTYPE:
1605 CODE:
1606 RETVAL = get_npending ();
1607 OUTPUT:
1608 RETVAL
1609
1471PROTOTYPES: DISABLE 1610PROTOTYPES: DISABLE
1472 1611
1473MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1612MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1474 1613
1475void 1614void
… …
1526void 1665void
1527result (aio_req grp, ...) 1666result (aio_req grp, ...)
1528 CODE: 1667 CODE:
1529{ 1668{
1530 int i; 1669 int i;
1670 AV *av;
1671
1672 grp->errorno = errno;
1673
1531 AV *av = newAV (); 1674 av = newAV ();
1532 1675
1533 for (i = 1; i < items; ++i ) 1676 for (i = 1; i < items; ++i )
1534 av_push (av, newSVsv (ST (i))); 1677 av_push (av, newSVsv (ST (i)));
1535 1678
1536 SvREFCNT_dec (grp->data); 1679 SvREFCNT_dec (grp->data);
1537 grp->data = (SV *)av; 1680 grp->data = (SV *)av;
1538} 1681}
1682
1683void
1684errno (aio_req grp, int errorno = errno)
1685 CODE:
1686 grp->errorno = errorno;
1539 1687
1540void 1688void
1541limit (aio_req grp, int limit) 1689limit (aio_req grp, int limit)
1542 CODE: 1690 CODE:
1543 grp->fd2 = limit; 1691 grp->fd2 = limit;

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