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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.73 by root, Tue Oct 24 21:26:30 2006 UTC vs.
Revision 1.80 by root, Fri Oct 27 19:17:23 2006 UTC

1/* solaris */ 1/* solaris */
2#define _POSIX_PTHREAD_SEMANTICS 1 2#define _POSIX_PTHREAD_SEMANTICS 1
3 3
4#if __linux 4#if __linux && !defined(_GNU_SOURCE)
5# define _GNU_SOURCE 5# define _GNU_SOURCE
6#endif 6#endif
7 7
8/* just in case */
8#define _REENTRANT 1 9#define _REENTRANT 1
9 10
10#include <errno.h> 11#include <errno.h>
11 12
12#include "EXTERN.h" 13#include "EXTERN.h"
… …
47/* used for struct dirent, AIX doesn't provide it */ 48/* used for struct dirent, AIX doesn't provide it */
48#ifndef NAME_MAX 49#ifndef NAME_MAX
49# define NAME_MAX 4096 50# define NAME_MAX 4096
50#endif 51#endif
51 52
53#ifndef PTHREAD_STACK_MIN
54/* care for broken platforms, e.g. windows */
55# define PTHREAD_STACK_MIN 16384
56#endif
57
52#if __ia64 58#if __ia64
53# define STACKSIZE 65536 59# define STACKSIZE 65536
54#elif __i386 || __x86_64 /* 16k is unreasonably high :( */ 60#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55# define STACKSIZE PTHREAD_STACK_MIN 61# define STACKSIZE PTHREAD_STACK_MIN
56#else 62#else
57# define STACKSIZE 16384 63# define STACKSIZE 16384
64#endif
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
58#endif 76#endif
59 77
60/* buffer size for various temporary buffers */ 78/* buffer size for various temporary buffers */
61#define AIO_BUFSIZE 65536 79#define AIO_BUFSIZE 65536
62 80
… …
126 NUM_PRI = PRI_MAX + PRI_BIAS + 1, 144 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127}; 145};
128 146
129static int next_pri = DEFAULT_PRI + PRI_BIAS; 147static int next_pri = DEFAULT_PRI + PRI_BIAS;
130 148
131static int started, wanted; 149static unsigned int started, wanted;
132static volatile int nreqs;
133static int max_outstanding = 1<<30;
134static int respipe [2];
135 150
136#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 151#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
137# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP 152# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
138#else 153#else
139# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER 154# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
140#endif 155#endif
141 156
142#define LOCK(mutex) pthread_mutex_lock (&(mutex)) 157#define LOCK(mutex) pthread_mutex_lock (&(mutex))
143#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) 158#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144 159
145/* worker threasd management */ 160/* worker threads management */
146static pthread_mutex_t wrklock = AIO_MUTEX_INIT; 161static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
147 162
148typedef struct worker { 163typedef struct worker {
149 /* locked by wrklock */ 164 /* locked by wrklock */
150 struct worker *prev, *next; 165 struct worker *prev, *next;
… …
180 wrk->prev->next = wrk->next; 195 wrk->prev->next = wrk->next;
181 196
182 free (wrk); 197 free (wrk);
183} 198}
184 199
200static volatile unsigned int nreqs, nready, npending;
201static volatile unsigned int max_outstanding = 0xffffffff;
202static int respipe [2];
203
185static pthread_mutex_t reslock = AIO_MUTEX_INIT; 204static pthread_mutex_t reslock = AIO_MUTEX_INIT;
186static pthread_mutex_t reqlock = AIO_MUTEX_INIT; 205static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
187static 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
188 238
189/* 239/*
190 * a somewhat faster data structure might be nice, but 240 * a somewhat faster data structure might be nice, but
191 * with 8 priorities this actually needs <20 insns 241 * with 8 priorities this actually needs <20 insns
192 * per shift, the most expensive operation. 242 * per shift, the most expensive operation.
… …
238 } 288 }
239 289
240 abort (); 290 abort ();
241} 291}
242 292
293static int poll_cb (int max);
243static void req_invoke (aio_req req); 294static void req_invoke (aio_req req);
244static void req_free (aio_req req); 295static void req_free (aio_req req);
245static void req_cancel (aio_req req); 296static void req_cancel (aio_req req);
246 297
247/* must be called at most once */ 298/* must be called at most once */
… …
312 req_invoke (grp); 363 req_invoke (grp);
313 req_free (grp); 364 req_free (grp);
314 } 365 }
315} 366}
316 367
317static void poll_wait ()
318{
319 fd_set rfd;
320
321 while (nreqs)
322 {
323 int size;
324#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
325 LOCK (reslock);
326#endif
327 size = res_queue.size;
328#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
329 UNLOCK (reslock);
330#endif
331
332 if (size)
333 return;
334
335 FD_ZERO(&rfd);
336 FD_SET(respipe [0], &rfd);
337
338 select (respipe [0] + 1, &rfd, 0, 0, 0);
339 }
340}
341
342static void req_invoke (aio_req req) 368static void req_invoke (aio_req req)
343{ 369{
344 dSP; 370 dSP;
345 371
346 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 372 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
347 { 373 {
348 errno = req->errorno;
349
350 ENTER; 374 ENTER;
351 SAVETMPS; 375 SAVETMPS;
352 PUSHMARK (SP); 376 PUSHMARK (SP);
353 EXTEND (SP, 1); 377 EXTEND (SP, 1);
354 378
… …
419 default: 443 default:
420 PUSHs (sv_2mortal (newSViv (req->result))); 444 PUSHs (sv_2mortal (newSViv (req->result)));
421 break; 445 break;
422 } 446 }
423 447
448 errno = req->errorno;
424 449
425 PUTBACK; 450 PUTBACK;
426 call_sv (req->callback, G_VOID | G_EVAL); 451 call_sv (req->callback, G_VOID | G_EVAL);
427 SPAGAIN; 452 SPAGAIN;
428 453
… …
490 req->flags |= FLAG_CANCELLED; 515 req->flags |= FLAG_CANCELLED;
491 516
492 req_cancel_subs (req); 517 req_cancel_subs (req);
493} 518}
494 519
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 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
495static int poll_cb () 660static int poll_cb (int max)
496{ 661{
497 dSP; 662 dSP;
498 int count = 0; 663 int count = 0;
499 int do_croak = 0; 664 int do_croak = 0;
500 aio_req req; 665 aio_req req;
501 666
502 for (;;) 667 for (;;)
503 { 668 {
504 LOCK (reslock); 669 while (max <= 0 || count < max)
505 req = reqq_shift (&res_queue);
506
507 if (req)
508 { 670 {
671 maybe_start_thread ();
672
673 LOCK (reslock);
674 req = reqq_shift (&res_queue);
675
509 if (!res_queue.size) 676 if (req)
510 { 677 {
678 --npending;
679
680 if (!res_queue.size)
681 {
511 /* read any signals sent by the worker threads */ 682 /* read any signals sent by the worker threads */
512 char buf [32]; 683 char buf [32];
513 while (read (respipe [0], buf, 32) == 32) 684 while (read (respipe [0], buf, 32) == 32)
685 ;
514 ; 686 }
515 } 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);
516 } 722 }
517 723
518 UNLOCK (reslock); 724 if (nreqs <= max_outstanding)
519
520 if (!req)
521 break; 725 break;
522 726
523 --nreqs; 727 poll_wait ();
524 728
525 if (req->type == REQ_QUIT) 729 max = 0;
526 started--;
527 else if (req->type == REQ_GROUP && req->length)
528 {
529 req->fd = 1; /* mark request as delayed */
530 continue;
531 }
532 else
533 {
534 if (req->type == REQ_READ)
535 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
536
537 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
538 SvREADONLY_off (req->data);
539
540 if (req->statdata)
541 {
542 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
543 PL_laststatval = req->result;
544 PL_statcache = *(req->statdata);
545 }
546
547 req_invoke (req);
548
549 count++;
550 }
551
552 req_free (req);
553 } 730 }
554 731
555 return count; 732 return count;
556}
557
558static void *aio_proc(void *arg);
559
560static void start_thread (void)
561{
562 sigset_t fullsigset, oldsigset;
563 pthread_attr_t attr;
564
565 worker *wrk = calloc (1, sizeof (worker));
566
567 if (!wrk)
568 croak ("unable to allocate worker thread data");
569
570 pthread_attr_init (&attr);
571 pthread_attr_setstacksize (&attr, STACKSIZE);
572 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
573
574 sigfillset (&fullsigset);
575
576 LOCK (wrklock);
577 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
578
579 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
580 {
581 wrk->prev = &wrk_first;
582 wrk->next = wrk_first.next;
583 wrk_first.next->prev = wrk;
584 wrk_first.next = wrk;
585 started++;
586 }
587 else
588 free (wrk);
589
590 sigprocmask (SIG_SETMASK, &oldsigset, 0);
591 UNLOCK (wrklock);
592}
593
594static void req_send (aio_req req)
595{
596 while (started < wanted && nreqs >= started)
597 start_thread ();
598
599 ++nreqs;
600
601 LOCK (reqlock);
602 reqq_push (&req_queue, req);
603 pthread_cond_signal (&reqwait);
604 UNLOCK (reqlock);
605
606 if (nreqs > max_outstanding)
607 for (;;)
608 {
609 poll_cb ();
610
611 if (nreqs <= max_outstanding)
612 break;
613
614 poll_wait ();
615 }
616}
617
618static void end_thread (void)
619{
620 aio_req req;
621
622 Newz (0, req, 1, aio_cb);
623
624 req->type = REQ_QUIT;
625 req->pri = PRI_MAX + PRI_BIAS;
626
627 req_send (req);
628}
629
630static void min_parallel (int nthreads)
631{
632 if (wanted < nthreads)
633 wanted = nthreads;
634}
635
636static void max_parallel (int nthreads)
637{
638 int cur = started;
639
640 if (wanted > nthreads)
641 wanted = nthreads;
642
643 while (cur > wanted)
644 {
645 end_thread ();
646 cur--;
647 }
648
649 while (started > wanted)
650 {
651 poll_wait ();
652 poll_cb ();
653 }
654} 733}
655 734
656static void create_pipe () 735static void create_pipe ()
657{ 736{
658 if (pipe (respipe)) 737 if (pipe (respipe))
… …
713#if !HAVE_FDATASYNC 792#if !HAVE_FDATASYNC
714# define fdatasync fsync 793# define fdatasync fsync
715#endif 794#endif
716 795
717#if !HAVE_READAHEAD 796#if !HAVE_READAHEAD
718# define readahead aio_readahead 797# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
719 798
720static 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)
721{ 800{
722 dBUF; 801 dBUF;
723 802
724 while (count > 0) 803 while (count > 0)
725 { 804 {
… …
730 count -= len; 809 count -= len;
731 } 810 }
732 811
733 errno = 0; 812 errno = 0;
734} 813}
814
735#endif 815#endif
736 816
737#if !HAVE_READDIR_R 817#if !HAVE_READDIR_R
738# define readdir_r aio_readdir_r 818# define readdir_r aio_readdir_r
739 819
… …
784 { 864 {
785 off_t sbytes; 865 off_t sbytes;
786 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 866 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
787 867
788 if (res < 0 && sbytes) 868 if (res < 0 && sbytes)
789 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 869 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
790 res = sbytes; 870 res = sbytes;
791 } 871 }
792 872
793# elif __hpux 873# elif __hpux
794 res = sendfile (ofd, ifd, offset, count, 0, 0); 874 res = sendfile (ofd, ifd, offset, count, 0, 0);
… …
874 int errorno; 954 int errorno;
875 955
876 LOCK (wrklock); 956 LOCK (wrklock);
877 self->dirp = dirp = opendir (req->dataptr); 957 self->dirp = dirp = opendir (req->dataptr);
878 self->dbuf = u = malloc (sizeof (*u)); 958 self->dbuf = u = malloc (sizeof (*u));
959 req->data2ptr = names = malloc (memlen);
879 UNLOCK (wrklock); 960 UNLOCK (wrklock);
880
881 req->data2ptr = names = malloc (memlen);
882 961
883 if (dirp && u && names) 962 if (dirp && u && names)
884 for (;;) 963 for (;;)
885 { 964 {
886 errno = 0; 965 errno = 0;
… …
922/*****************************************************************************/ 1001/*****************************************************************************/
923 1002
924static void *aio_proc (void *thr_arg) 1003static void *aio_proc (void *thr_arg)
925{ 1004{
926 aio_req req; 1005 aio_req req;
927 int type;
928 worker *self = (worker *)thr_arg; 1006 worker *self = (worker *)thr_arg;
929 1007
930 do 1008 for (;;)
931 { 1009 {
932 LOCK (reqlock); 1010 LOCK (reqlock);
933 1011
934 for (;;) 1012 for (;;)
935 { 1013 {
… …
939 break; 1017 break;
940 1018
941 pthread_cond_wait (&reqwait, &reqlock); 1019 pthread_cond_wait (&reqwait, &reqlock);
942 } 1020 }
943 1021
1022 --nready;
1023
944 UNLOCK (reqlock); 1024 UNLOCK (reqlock);
945 1025
946 errno = 0; /* strictly unnecessary */ 1026 errno = 0; /* strictly unnecessary */
947 type = req->type; /* remember type for QUIT check */
948 1027
949 if (!(req->flags & FLAG_CANCELLED)) 1028 if (!(req->flags & FLAG_CANCELLED))
950 switch (type) 1029 switch (req->type)
951 { 1030 {
952 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;
953 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;
954 1033
955 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;
… …
981 req->result = select (0, 0, 0, 0, &tv); 1060 req->result = select (0, 0, 0, 0, &tv);
982 } 1061 }
983 1062
984 case REQ_GROUP: 1063 case REQ_GROUP:
985 case REQ_NOP: 1064 case REQ_NOP:
1065 break;
1066
986 case REQ_QUIT: 1067 case REQ_QUIT:
1068 LOCK (wrklock);
1069 worker_free (self);
1070 --started;
1071 UNLOCK (wrklock);
987 break; 1072 return 0;
988 1073
989 default: 1074 default:
990 req->result = ENOSYS; 1075 req->result = ENOSYS;
991 break; 1076 break;
992 } 1077 }
993 1078
994 req->errorno = errno; 1079 req->errorno = errno;
995 1080
996 LOCK (reslock); 1081 LOCK (reslock);
997 1082
1083 ++npending;
1084
998 if (!reqq_push (&res_queue, req)) 1085 if (!reqq_push (&res_queue, req))
999 /* write a dummy byte to the pipe so fh becomes ready */ 1086 /* write a dummy byte to the pipe so fh becomes ready */
1000 write (respipe [1], &respipe, 1); 1087 write (respipe [1], &respipe, 1);
1001 1088
1002 self->req = 0; 1089 self->req = 0;
1003 worker_clear (self); 1090 worker_clear (self);
1004 1091
1005 UNLOCK (reslock); 1092 UNLOCK (reslock);
1006 } 1093 }
1007 while (type != REQ_QUIT);
1008
1009 LOCK (wrklock);
1010 worker_free (self);
1011 UNLOCK (wrklock);
1012
1013 return 0;
1014} 1094}
1015 1095
1016/*****************************************************************************/ 1096/*****************************************************************************/
1017 1097
1018static void atfork_prepare (void) 1098static void atfork_prepare (void)
… …
1104 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1184 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1105 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); 1185 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1106 1186
1107 create_pipe (); 1187 create_pipe ();
1108 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1188 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1109}
1110 1189
1190 start_thread ();
1191}
1192
1111void 1193void
1112min_parallel (nthreads) 1194min_parallel (int nthreads)
1113 int nthreads
1114 PROTOTYPE: $ 1195 PROTOTYPE: $
1115 1196
1116void 1197void
1117max_parallel (nthreads) 1198max_parallel (int nthreads)
1118 int nthreads
1119 PROTOTYPE: $ 1199 PROTOTYPE: $
1120 1200
1121int 1201int
1122max_outstanding (nreqs) 1202max_outstanding (int maxreqs)
1123 int nreqs 1203 PROTOTYPE: $
1124 PROTOTYPE: $
1125 CODE: 1204 CODE:
1126 RETVAL = max_outstanding; 1205 RETVAL = max_outstanding;
1127 max_outstanding = nreqs; 1206 max_outstanding = maxreqs;
1207 OUTPUT:
1208 RETVAL
1128 1209
1129void 1210void
1130aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1211aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1131 SV * pathname 1212 SV * pathname
1132 int flags 1213 int flags
… …
1387 req->type = REQ_NOP; 1468 req->type = REQ_NOP;
1388 1469
1389 REQ_SEND; 1470 REQ_SEND;
1390} 1471}
1391 1472
1392void 1473int
1393aioreq_pri (int pri = DEFAULT_PRI) 1474aioreq_pri (int pri = 0)
1394 CODE: 1475 PROTOTYPE: ;$
1476 CODE:
1477 RETVAL = next_pri - PRI_BIAS;
1478 if (items > 0)
1479 {
1395 if (pri < PRI_MIN) pri = PRI_MIN; 1480 if (pri < PRI_MIN) pri = PRI_MIN;
1396 if (pri > PRI_MAX) pri = PRI_MAX; 1481 if (pri > PRI_MAX) pri = PRI_MAX;
1397 next_pri = pri + PRI_BIAS; 1482 next_pri = pri + PRI_BIAS;
1483 }
1484 OUTPUT:
1485 RETVAL
1398 1486
1399void 1487void
1400aioreq_nice (int nice = 0) 1488aioreq_nice (int nice = 0)
1401 CODE: 1489 CODE:
1402 nice = next_pri - nice; 1490 nice = next_pri - nice;
1403 if (nice < PRI_MIN) nice = PRI_MIN; 1491 if (nice < PRI_MIN) nice = PRI_MIN;
1404 if (nice > PRI_MAX) nice = PRI_MAX; 1492 if (nice > PRI_MAX) nice = PRI_MAX;
1405 next_pri = nice + PRI_BIAS; 1493 next_pri = nice + PRI_BIAS;
1406 1494
1407void 1495void
1408flush () 1496flush ()
1409 PROTOTYPE: 1497 PROTOTYPE:
1410 CODE: 1498 CODE:
1411 while (nreqs) 1499 while (nreqs)
1412 { 1500 {
1413 poll_wait (); 1501 poll_wait ();
1414 poll_cb (); 1502 poll_cb (0);
1415 } 1503 }
1416 1504
1417void 1505void
1418poll() 1506poll()
1419 PROTOTYPE: 1507 PROTOTYPE:
1420 CODE: 1508 CODE:
1421 if (nreqs) 1509 if (nreqs)
1422 { 1510 {
1423 poll_wait (); 1511 poll_wait ();
1424 poll_cb (); 1512 poll_cb (0);
1425 } 1513 }
1426 1514
1427int 1515int
1428poll_fileno() 1516poll_fileno()
1429 PROTOTYPE: 1517 PROTOTYPE:
… …
1434 1522
1435int 1523int
1436poll_cb(...) 1524poll_cb(...)
1437 PROTOTYPE: 1525 PROTOTYPE:
1438 CODE: 1526 CODE:
1439 RETVAL = poll_cb (); 1527 RETVAL = poll_cb (0);
1528 OUTPUT:
1529 RETVAL
1530
1531int
1532poll_some(int max = 0)
1533 PROTOTYPE: $
1534 CODE:
1535 RETVAL = poll_cb (max);
1440 OUTPUT: 1536 OUTPUT:
1441 RETVAL 1537 RETVAL
1442 1538
1443void 1539void
1444poll_wait() 1540poll_wait()
… …
1453 CODE: 1549 CODE:
1454 RETVAL = nreqs; 1550 RETVAL = nreqs;
1455 OUTPUT: 1551 OUTPUT:
1456 RETVAL 1552 RETVAL
1457 1553
1554int
1555nready()
1556 PROTOTYPE:
1557 CODE:
1558 RETVAL = get_nready ();
1559 OUTPUT:
1560 RETVAL
1561
1562int
1563npending()
1564 PROTOTYPE:
1565 CODE:
1566 RETVAL = get_npending ();
1567 OUTPUT:
1568 RETVAL
1569
1458PROTOTYPES: DISABLE 1570PROTOTYPES: DISABLE
1459 1571
1460MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1572MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1461 1573
1462void 1574void
… …
1513void 1625void
1514result (aio_req grp, ...) 1626result (aio_req grp, ...)
1515 CODE: 1627 CODE:
1516{ 1628{
1517 int i; 1629 int i;
1630 AV *av;
1631
1632 grp->errorno = errno;
1633
1518 AV *av = newAV (); 1634 av = newAV ();
1519 1635
1520 for (i = 1; i < items; ++i ) 1636 for (i = 1; i < items; ++i )
1521 av_push (av, newSVsv (ST (i))); 1637 av_push (av, newSVsv (ST (i)));
1522 1638
1523 SvREFCNT_dec (grp->data); 1639 SvREFCNT_dec (grp->data);
1524 grp->data = (SV *)av; 1640 grp->data = (SV *)av;
1525} 1641}
1642
1643void
1644errno (aio_req grp, int errorno = errno)
1645 CODE:
1646 grp->errorno = errorno;
1526 1647
1527void 1648void
1528limit (aio_req grp, int limit) 1649limit (aio_req grp, int limit)
1529 CODE: 1650 CODE:
1530 grp->fd2 = limit; 1651 grp->fd2 = limit;

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