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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.76 by root, Thu Oct 26 12:38:04 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 int started, wanted; 152static unsigned int started, idle, wanted;
138static volatile int nreqs;
139static int respipe [2];
140 153
141#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 154#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
142# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP 155# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
143#else 156#else
144# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER 157# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
… …
185 wrk->prev->next = wrk->next; 198 wrk->prev->next = wrk->next;
186 199
187 free (wrk); 200 free (wrk);
188} 201}
189 202
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
190static pthread_mutex_t reslock = AIO_MUTEX_INIT; 208static pthread_mutex_t reslock = AIO_MUTEX_INIT;
191static pthread_mutex_t reqlock = AIO_MUTEX_INIT; 209static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
192static 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
193 242
194/* 243/*
195 * a somewhat faster data structure might be nice, but 244 * a somewhat faster data structure might be nice, but
196 * with 8 priorities this actually needs <20 insns 245 * with 8 priorities this actually needs <20 insns
197 * per shift, the most expensive operation. 246 * per shift, the most expensive operation.
… …
318 req_invoke (grp); 367 req_invoke (grp);
319 req_free (grp); 368 req_free (grp);
320 } 369 }
321} 370}
322 371
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) 372static void req_invoke (aio_req req)
349{ 373{
350 dSP; 374 dSP;
351 375
352 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 376 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
353 { 377 {
354 errno = req->errorno;
355
356 ENTER; 378 ENTER;
357 SAVETMPS; 379 SAVETMPS;
358 PUSHMARK (SP); 380 PUSHMARK (SP);
359 EXTEND (SP, 1); 381 EXTEND (SP, 1);
360 382
… …
425 default: 447 default:
426 PUSHs (sv_2mortal (newSViv (req->result))); 448 PUSHs (sv_2mortal (newSViv (req->result)));
427 break; 449 break;
428 } 450 }
429 451
452 errno = req->errorno;
430 453
431 PUTBACK; 454 PUTBACK;
432 call_sv (req->callback, G_VOID | G_EVAL); 455 call_sv (req->callback, G_VOID | G_EVAL);
433 SPAGAIN; 456 SPAGAIN;
434 457
… …
496 req->flags |= FLAG_CANCELLED; 519 req->flags |= FLAG_CANCELLED;
497 520
498 req_cancel_subs (req); 521 req_cancel_subs (req);
499} 522}
500 523
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
501static int poll_cb (int max) 645static int poll_cb (int max)
502{ 646{
503 dSP; 647 dSP;
504 int count = 0; 648 int count = 0;
505 int do_croak = 0; 649 int do_croak = 0;
506 aio_req req; 650 aio_req req;
507 651
652 for (;;)
653 {
508 while (max <= 0 || count < max) 654 while (max <= 0 || count < max)
509 {
510 LOCK (reslock);
511 req = reqq_shift (&res_queue);
512
513 if (req)
514 { 655 {
656 maybe_start_thread ();
657
658 LOCK (reslock);
659 req = reqq_shift (&res_queue);
660
515 if (!res_queue.size) 661 if (req)
516 { 662 {
663 --npending;
664
665 if (!res_queue.size)
666 {
517 /* read any signals sent by the worker threads */ 667 /* read any signals sent by the worker threads */
518 char buf [32]; 668 char buf [32];
519 while (read (respipe [0], buf, 32) == 32) 669 while (read (respipe [0], buf, 32) == 32)
670 ;
520 ; 671 }
521 } 672 }
673
674 UNLOCK (reslock);
675
676 if (!req)
677 break;
678
679 --nreqs;
680
681 if (req->type == REQ_GROUP && req->length)
682 {
683 req->fd = 1; /* mark request as delayed */
684 continue;
685 }
686 else
687 {
688 if (req->type == REQ_READ)
689 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
690
691 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
692 SvREADONLY_off (req->data);
693
694 if (req->statdata)
695 {
696 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
697 PL_laststatval = req->result;
698 PL_statcache = *(req->statdata);
699 }
700
701 req_invoke (req);
702
703 count++;
704 }
705
706 req_free (req);
522 } 707 }
523 708
524 UNLOCK (reslock); 709 if (nreqs <= max_outstanding)
525
526 if (!req)
527 break; 710 break;
528 711
529 --nreqs; 712 poll_wait ();
530 713
531 if (req->type == REQ_QUIT) 714 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 } 715 }
560 716
561 return count; 717 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} 718}
650 719
651static void create_pipe () 720static void create_pipe ()
652{ 721{
653 if (pipe (respipe)) 722 if (pipe (respipe))
… …
780 { 849 {
781 off_t sbytes; 850 off_t sbytes;
782 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 851 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
783 852
784 if (res < 0 && sbytes) 853 if (res < 0 && sbytes)
785 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 854 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
786 res = sbytes; 855 res = sbytes;
787 } 856 }
788 857
789# elif __hpux 858# elif __hpux
790 res = sendfile (ofd, ifd, offset, count, 0, 0); 859 res = sendfile (ofd, ifd, offset, count, 0, 0);
… …
917/*****************************************************************************/ 986/*****************************************************************************/
918 987
919static void *aio_proc (void *thr_arg) 988static void *aio_proc (void *thr_arg)
920{ 989{
921 aio_req req; 990 aio_req req;
922 int type; 991 struct timespec ts;
923 worker *self = (worker *)thr_arg; 992 worker *self = (worker *)thr_arg;
924 993
925 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 (;;)
926 { 999 {
1000 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1001
927 LOCK (reqlock); 1002 LOCK (reqlock);
928 1003
929 for (;;) 1004 for (;;)
930 { 1005 {
931 self->req = req = reqq_shift (&req_queue); 1006 self->req = req = reqq_shift (&req_queue);
932 1007
933 if (req) 1008 if (req)
934 break; 1009 break;
935 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 */
936 pthread_cond_wait (&reqwait, &reqlock); 1027 pthread_cond_wait (&reqwait, &reqlock);
1028 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1029 }
1030
1031 --idle;
937 } 1032 }
1033
1034 --nready;
938 1035
939 UNLOCK (reqlock); 1036 UNLOCK (reqlock);
940 1037
941 errno = 0; /* strictly unnecessary */ 1038 errno = 0; /* strictly unnecessary */
942 type = req->type; /* remember type for QUIT check */
943 1039
944 if (!(req->flags & FLAG_CANCELLED)) 1040 if (!(req->flags & FLAG_CANCELLED))
945 switch (type) 1041 switch (req->type)
946 { 1042 {
947 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;
948 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;
949 1045
950 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;
… …
959 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 1055 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
960 case REQ_RMDIR: req->result = rmdir (req->dataptr); break; 1056 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
961 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; 1057 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
962 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; 1058 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
963 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;
964 1061
965 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 1062 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
966 case REQ_FSYNC: req->result = fsync (req->fd); break; 1063 case REQ_FSYNC: req->result = fsync (req->fd); break;
967 case REQ_READDIR: scandir_ (req, self); break; 1064 case REQ_READDIR: scandir_ (req, self); break;
968 1065
… …
976 req->result = select (0, 0, 0, 0, &tv); 1073 req->result = select (0, 0, 0, 0, &tv);
977 } 1074 }
978 1075
979 case REQ_GROUP: 1076 case REQ_GROUP:
980 case REQ_NOP: 1077 case REQ_NOP:
1078 break;
1079
981 case REQ_QUIT: 1080 case REQ_QUIT:
982 break; 1081 goto quit;
983 1082
984 default: 1083 default:
985 req->result = ENOSYS; 1084 req->result = ENOSYS;
986 break; 1085 break;
987 } 1086 }
988 1087
989 req->errorno = errno; 1088 req->errorno = errno;
990 1089
991 LOCK (reslock); 1090 LOCK (reslock);
992 1091
1092 ++npending;
1093
993 if (!reqq_push (&res_queue, req)) 1094 if (!reqq_push (&res_queue, req))
994 /* write a dummy byte to the pipe so fh becomes ready */ 1095 /* write a dummy byte to the pipe so fh becomes ready */
995 write (respipe [1], &respipe, 1); 1096 write (respipe [1], &respipe, 1);
996 1097
997 self->req = 0; 1098 self->req = 0;
998 worker_clear (self); 1099 worker_clear (self);
999 1100
1000 UNLOCK (reslock); 1101 UNLOCK (reslock);
1001 } 1102 }
1002 while (type != REQ_QUIT);
1003 1103
1104quit:
1004 LOCK (wrklock); 1105 LOCK (wrklock);
1005 worker_free (self); 1106 worker_free (self);
1006 UNLOCK (wrklock); 1107 UNLOCK (wrklock);
1007 1108
1008 return 0; 1109 return 0;
… …
1055 1156
1056 worker_clear (wrk); 1157 worker_clear (wrk);
1057 worker_free (wrk); 1158 worker_free (wrk);
1058 } 1159 }
1059 1160
1060 started = 0; 1161 started = 0;
1162 idle = 0;
1061 nreqs = 0; 1163 nreqs = 0;
1164 nready = 0;
1165 npending = 0;
1062 1166
1063 close (respipe [0]); 1167 close (respipe [0]);
1064 close (respipe [1]); 1168 close (respipe [1]);
1065 create_pipe (); 1169 create_pipe ();
1066 1170
… …
1093PROTOTYPES: ENABLE 1197PROTOTYPES: ENABLE
1094 1198
1095BOOT: 1199BOOT:
1096{ 1200{
1097 HV *stash = gv_stashpv ("IO::AIO", 1); 1201 HV *stash = gv_stashpv ("IO::AIO", 1);
1202
1098 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1203 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1099 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1204 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1100 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));
1101 1209
1102 create_pipe (); 1210 create_pipe ();
1103 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1211 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104} 1212}
1105 1213
1106void 1214void
1107min_parallel (nthreads) 1215min_parallel (int nthreads)
1108 int nthreads
1109 PROTOTYPE: $ 1216 PROTOTYPE: $
1110 1217
1111void 1218void
1112max_parallel (nthreads) 1219max_parallel (int nthreads)
1113 int nthreads
1114 PROTOTYPE: $ 1220 PROTOTYPE: $
1221
1222int
1223max_outstanding (int maxreqs)
1224 PROTOTYPE: $
1225 CODE:
1226 RETVAL = max_outstanding;
1227 max_outstanding = maxreqs;
1228 OUTPUT:
1229 RETVAL
1115 1230
1116void 1231void
1117aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1232aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1118 SV * pathname 1233 SV * pathname
1119 int flags 1234 int flags
… …
1334 1449
1335 REQ_SEND; 1450 REQ_SEND;
1336} 1451}
1337 1452
1338void 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
1339aio_busy (delay,callback=&PL_sv_undef) 1473aio_busy (delay,callback=&PL_sv_undef)
1340 double delay 1474 double delay
1341 SV * callback 1475 SV * callback
1342 PPCODE: 1476 PPCODE:
1343{ 1477{
… …
1374 req->type = REQ_NOP; 1508 req->type = REQ_NOP;
1375 1509
1376 REQ_SEND; 1510 REQ_SEND;
1377} 1511}
1378 1512
1379void 1513int
1380aioreq_pri (int pri = DEFAULT_PRI) 1514aioreq_pri (int pri = 0)
1381 CODE: 1515 PROTOTYPE: ;$
1516 CODE:
1517 RETVAL = next_pri - PRI_BIAS;
1518 if (items > 0)
1519 {
1382 if (pri < PRI_MIN) pri = PRI_MIN; 1520 if (pri < PRI_MIN) pri = PRI_MIN;
1383 if (pri > PRI_MAX) pri = PRI_MAX; 1521 if (pri > PRI_MAX) pri = PRI_MAX;
1384 next_pri = pri + PRI_BIAS; 1522 next_pri = pri + PRI_BIAS;
1523 }
1524 OUTPUT:
1525 RETVAL
1385 1526
1386void 1527void
1387aioreq_nice (int nice = 0) 1528aioreq_nice (int nice = 0)
1388 CODE: 1529 CODE:
1389 nice = next_pri - nice; 1530 nice = next_pri - nice;
1390 if (nice < PRI_MIN) nice = PRI_MIN; 1531 if (nice < PRI_MIN) nice = PRI_MIN;
1391 if (nice > PRI_MAX) nice = PRI_MAX; 1532 if (nice > PRI_MAX) nice = PRI_MAX;
1392 next_pri = nice + PRI_BIAS; 1533 next_pri = nice + PRI_BIAS;
1393 1534
1394void 1535void
1395flush () 1536flush ()
1396 PROTOTYPE: 1537 PROTOTYPE:
1397 CODE: 1538 CODE:
… …
1448 CODE: 1589 CODE:
1449 RETVAL = nreqs; 1590 RETVAL = nreqs;
1450 OUTPUT: 1591 OUTPUT:
1451 RETVAL 1592 RETVAL
1452 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
1453PROTOTYPES: DISABLE 1610PROTOTYPES: DISABLE
1454 1611
1455MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1612MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1456 1613
1457void 1614void
… …
1508void 1665void
1509result (aio_req grp, ...) 1666result (aio_req grp, ...)
1510 CODE: 1667 CODE:
1511{ 1668{
1512 int i; 1669 int i;
1670 AV *av;
1671
1672 grp->errorno = errno;
1673
1513 AV *av = newAV (); 1674 av = newAV ();
1514 1675
1515 for (i = 1; i < items; ++i ) 1676 for (i = 1; i < items; ++i )
1516 av_push (av, newSVsv (ST (i))); 1677 av_push (av, newSVsv (ST (i)));
1517 1678
1518 SvREFCNT_dec (grp->data); 1679 SvREFCNT_dec (grp->data);
1519 grp->data = (SV *)av; 1680 grp->data = (SV *)av;
1520} 1681}
1682
1683void
1684errno (aio_req grp, int errorno = errno)
1685 CODE:
1686 grp->errorno = errorno;
1521 1687
1522void 1688void
1523limit (aio_req grp, int limit) 1689limit (aio_req grp, int limit)
1524 CODE: 1690 CODE:
1525 grp->fd2 = limit; 1691 grp->fd2 = limit;

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