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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.71 by root, Tue Oct 24 16:35:04 2006 UTC vs.
Revision 1.85 by root, Sat Oct 28 23:32:29 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"
… …
42# else 43# else
43# error sendfile support requested but not available 44# error sendfile support requested but not available
44# endif 45# endif
45#endif 46#endif
46 47
48/* number of seconds after which idle threads exit */
49#define IDLE_TIMEOUT 10
50
47/* used for struct dirent, AIX doesn't provide it */ 51/* used for struct dirent, AIX doesn't provide it */
48#ifndef NAME_MAX 52#ifndef NAME_MAX
49# define NAME_MAX 4096 53# define NAME_MAX 4096
54#endif
55
56#ifndef PTHREAD_STACK_MIN
57/* care for broken platforms, e.g. windows */
58# define PTHREAD_STACK_MIN 16384
50#endif 59#endif
51 60
52#if __ia64 61#if __ia64
53# define STACKSIZE 65536 62# define STACKSIZE 65536
54#elif __i386 || __x86_64 /* 16k is unreasonably high :( */ 63#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55# define STACKSIZE PTHREAD_STACK_MIN 64# define STACKSIZE PTHREAD_STACK_MIN
56#else 65#else
57# 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 WORDACCESS_UNSAFE
74# if __i386 || __x86_64
75# define WORDACCESS_UNSAFE 0
76# else
77# define WORDACCESS_UNSAFE 1
78# endif
58#endif 79#endif
59 80
60/* buffer size for various temporary buffers */ 81/* buffer size for various temporary buffers */
61#define AIO_BUFSIZE 65536 82#define AIO_BUFSIZE 65536
62 83
… …
74 REQ_READ, REQ_WRITE, REQ_READAHEAD, 95 REQ_READ, REQ_WRITE, REQ_READAHEAD,
75 REQ_SENDFILE, 96 REQ_SENDFILE,
76 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 97 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77 REQ_FSYNC, REQ_FDATASYNC, 98 REQ_FSYNC, REQ_FDATASYNC,
78 REQ_UNLINK, REQ_RMDIR, REQ_RENAME, 99 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
79 REQ_READDIR, 100 REQ_MKNOD, REQ_READDIR,
80 REQ_LINK, REQ_SYMLINK, 101 REQ_LINK, REQ_SYMLINK,
81 REQ_GROUP, REQ_NOP, 102 REQ_GROUP, REQ_NOP,
82 REQ_BUSY, 103 REQ_BUSY,
83}; 104};
84 105
… …
124 DEFAULT_PRI = 0, 145 DEFAULT_PRI = 0,
125 PRI_BIAS = -PRI_MIN, 146 PRI_BIAS = -PRI_MIN,
126 NUM_PRI = PRI_MAX + PRI_BIAS + 1, 147 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127}; 148};
128 149
150#define AIO_TICKS ((1000000 + 1023) >> 10)
151
152static unsigned int max_poll_time = 0;
153static unsigned int max_poll_reqs = 0;
154
155/* calculcate time difference in ~1/AIO_TICKS of a second */
156static int tvdiff (struct timeval *tv1, struct timeval *tv2)
157{
158 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
159 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
160}
161
129static int next_pri = DEFAULT_PRI + PRI_BIAS; 162static int next_pri = DEFAULT_PRI + PRI_BIAS;
130 163
131static int started, wanted; 164static unsigned int started, idle, wanted;
132static volatile int nreqs;
133static int max_outstanding = 1<<30;
134static int respipe [2];
135 165
136#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 166#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
137# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP 167# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
138#else 168#else
139# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER 169# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
140#endif 170#endif
141 171
142#define LOCK(mutex) pthread_mutex_lock (&(mutex)) 172#define LOCK(mutex) pthread_mutex_lock (&(mutex))
143#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) 173#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144 174
145/* worker threasd management */ 175/* worker threads management */
146static pthread_mutex_t wrklock = AIO_MUTEX_INIT; 176static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
147 177
148typedef struct worker { 178typedef struct worker {
149 /* locked by wrklock */ 179 /* locked by wrklock */
150 struct worker *prev, *next; 180 struct worker *prev, *next;
… …
180 wrk->prev->next = wrk->next; 210 wrk->prev->next = wrk->next;
181 211
182 free (wrk); 212 free (wrk);
183} 213}
184 214
215static volatile unsigned int nreqs, nready, npending;
216static volatile unsigned int max_idle = 4;
217static volatile unsigned int max_outstanding = 0xffffffff;
218static int respipe [2];
219
185static pthread_mutex_t reslock = AIO_MUTEX_INIT; 220static pthread_mutex_t reslock = AIO_MUTEX_INIT;
186static pthread_mutex_t reqlock = AIO_MUTEX_INIT; 221static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
187static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 222static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
223
224#if WORDACCESS_UNSAFE
225
226static unsigned int get_nready ()
227{
228 unsigned int retval;
229
230 LOCK (reqlock);
231 retval = nready;
232 UNLOCK (reqlock);
233
234 return retval;
235}
236
237static unsigned int get_npending ()
238{
239 unsigned int retval;
240
241 LOCK (reslock);
242 retval = npending;
243 UNLOCK (reslock);
244
245 return retval;
246}
247
248static unsigned int get_nthreads ()
249{
250 unsigned int retval;
251
252 LOCK (wrklock);
253 retval = started;
254 UNLOCK (wrklock);
255
256 return retval;
257}
258
259#else
260
261# define get_nready() nready
262# define get_npending() npending
263# define get_nthreads() started
264
265#endif
188 266
189/* 267/*
190 * a somewhat faster data structure might be nice, but 268 * a somewhat faster data structure might be nice, but
191 * with 8 priorities this actually needs <20 insns 269 * with 8 priorities this actually needs <20 insns
192 * per shift, the most expensive operation. 270 * per shift, the most expensive operation.
… …
238 } 316 }
239 317
240 abort (); 318 abort ();
241} 319}
242 320
321static int poll_cb ();
243static void req_invoke (aio_req req); 322static void req_invoke (aio_req req);
244static void req_free (aio_req req); 323static void req_free (aio_req req);
324static void req_cancel (aio_req req);
245 325
246/* must be called at most once */ 326/* must be called at most once */
247static SV *req_sv (aio_req req, const char *klass) 327static SV *req_sv (aio_req req, const char *klass)
248{ 328{
249 if (!req->self) 329 if (!req->self)
… …
311 req_invoke (grp); 391 req_invoke (grp);
312 req_free (grp); 392 req_free (grp);
313 } 393 }
314} 394}
315 395
316static void poll_wait ()
317{
318 fd_set rfd;
319
320 while (nreqs)
321 {
322 int size;
323#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
324 LOCK (reslock);
325#endif
326 size = res_queue.size;
327#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
328 UNLOCK (reslock);
329#endif
330
331 if (size)
332 return;
333
334 FD_ZERO(&rfd);
335 FD_SET(respipe [0], &rfd);
336
337 select (respipe [0] + 1, &rfd, 0, 0, 0);
338 }
339}
340
341static void req_invoke (aio_req req) 396static void req_invoke (aio_req req)
342{ 397{
343 dSP; 398 dSP;
344 399
345 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 400 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
346 { 401 {
347 errno = req->errorno;
348
349 ENTER; 402 ENTER;
350 SAVETMPS; 403 SAVETMPS;
351 PUSHMARK (SP); 404 PUSHMARK (SP);
352 EXTEND (SP, 1); 405 EXTEND (SP, 1);
353 406
… …
418 default: 471 default:
419 PUSHs (sv_2mortal (newSViv (req->result))); 472 PUSHs (sv_2mortal (newSViv (req->result)));
420 break; 473 break;
421 } 474 }
422 475
476 errno = req->errorno;
423 477
424 PUTBACK; 478 PUTBACK;
425 call_sv (req->callback, G_VOID | G_EVAL); 479 call_sv (req->callback, G_VOID | G_EVAL);
426 SPAGAIN; 480 SPAGAIN;
427 481
… …
468 free (req->data2ptr); 522 free (req->data2ptr);
469 523
470 Safefree (req); 524 Safefree (req);
471} 525}
472 526
527static void req_cancel_subs (aio_req grp)
528{
529 aio_req sub;
530
531 if (grp->type != REQ_GROUP)
532 return;
533
534 SvREFCNT_dec (grp->fh2);
535 grp->fh2 = 0;
536
537 for (sub = grp->grp_first; sub; sub = sub->grp_next)
538 req_cancel (sub);
539}
540
473static void req_cancel (aio_req req) 541static void req_cancel (aio_req req)
474{ 542{
475 req->flags |= FLAG_CANCELLED; 543 req->flags |= FLAG_CANCELLED;
476 544
477 if (req->type == REQ_GROUP) 545 req_cancel_subs (req);
478 {
479 aio_req sub;
480
481 for (sub = req->grp_first; sub; sub = sub->grp_next)
482 req_cancel (sub);
483 }
484}
485
486static int poll_cb ()
487{
488 dSP;
489 int count = 0;
490 int do_croak = 0;
491 aio_req req;
492
493 for (;;)
494 {
495 LOCK (reslock);
496 req = reqq_shift (&res_queue);
497
498 if (req)
499 {
500 if (!res_queue.size)
501 {
502 /* read any signals sent by the worker threads */
503 char buf [32];
504 while (read (respipe [0], buf, 32) == 32)
505 ;
506 }
507 }
508
509 UNLOCK (reslock);
510
511 if (!req)
512 break;
513
514 --nreqs;
515
516 if (req->type == REQ_QUIT)
517 started--;
518 else if (req->type == REQ_GROUP && req->length)
519 {
520 req->fd = 1; /* mark request as delayed */
521 continue;
522 }
523 else
524 {
525 if (req->type == REQ_READ)
526 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
527
528 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
529 SvREADONLY_off (req->data);
530
531 if (req->statdata)
532 {
533 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
534 PL_laststatval = req->result;
535 PL_statcache = *(req->statdata);
536 }
537
538 req_invoke (req);
539
540 count++;
541 }
542
543 req_free (req);
544 }
545
546 return count;
547} 546}
548 547
549static void *aio_proc(void *arg); 548static void *aio_proc(void *arg);
550 549
551static void start_thread (void) 550static void start_thread (void)
552{ 551{
552 sigset_t fullsigset, oldsigset;
553 pthread_attr_t attr;
554
553 worker *wrk = calloc (1, sizeof (worker)); 555 worker *wrk = calloc (1, sizeof (worker));
554 556
555 if (!wrk) 557 if (!wrk)
556 croak ("unable to allocate worker thread data"); 558 croak ("unable to allocate worker thread data");
557
558 sigset_t fullsigset, oldsigset;
559 pthread_attr_t attr;
560 559
561 pthread_attr_init (&attr); 560 pthread_attr_init (&attr);
562 pthread_attr_setstacksize (&attr, STACKSIZE); 561 pthread_attr_setstacksize (&attr, STACKSIZE);
563 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); 562 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
563#ifdef PTHREAD_SCOPE_PROCESS
564 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
565#endif
564 566
565 sigfillset (&fullsigset); 567 sigfillset (&fullsigset);
566 568
567 LOCK (wrklock); 569 LOCK (wrklock);
568 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); 570 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
… …
571 { 573 {
572 wrk->prev = &wrk_first; 574 wrk->prev = &wrk_first;
573 wrk->next = wrk_first.next; 575 wrk->next = wrk_first.next;
574 wrk_first.next->prev = wrk; 576 wrk_first.next->prev = wrk;
575 wrk_first.next = wrk; 577 wrk_first.next = wrk;
576 started++; 578 ++started;
577 } 579 }
578 else 580 else
579 free (wrk); 581 free (wrk);
580 582
581 sigprocmask (SIG_SETMASK, &oldsigset, 0); 583 sigprocmask (SIG_SETMASK, &oldsigset, 0);
582 UNLOCK (wrklock); 584 UNLOCK (wrklock);
583} 585}
584 586
587static void maybe_start_thread ()
588{
589 if (get_nthreads () >= wanted)
590 return;
591
592 /* todo: maybe use idle here, but might be less exact */
593 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
594 return;
595
596 start_thread ();
597}
598
585static void req_send (aio_req req) 599static void req_send (aio_req req)
586{ 600{
587 while (started < wanted && nreqs >= started)
588 start_thread ();
589
590 ++nreqs; 601 ++nreqs;
602
603 LOCK (reqlock);
604 ++nready;
605 reqq_push (&req_queue, req);
606 pthread_cond_signal (&reqwait);
607 UNLOCK (reqlock);
608
609 maybe_start_thread ();
610}
611
612static void end_thread (void)
613{
614 aio_req req;
615
616 Newz (0, req, 1, aio_cb);
617
618 req->type = REQ_QUIT;
619 req->pri = PRI_MAX + PRI_BIAS;
591 620
592 LOCK (reqlock); 621 LOCK (reqlock);
593 reqq_push (&req_queue, req); 622 reqq_push (&req_queue, req);
594 pthread_cond_signal (&reqwait); 623 pthread_cond_signal (&reqwait);
595 UNLOCK (reqlock); 624 UNLOCK (reqlock);
596 625
597 if (nreqs > max_outstanding) 626 LOCK (wrklock);
598 for (;;) 627 --started;
599 { 628 UNLOCK (wrklock);
600 poll_cb ();
601
602 if (nreqs <= max_outstanding)
603 break;
604
605 poll_wait ();
606 }
607} 629}
608 630
609static void end_thread (void) 631static void set_max_idle (int nthreads)
610{ 632{
611 aio_req req; 633 if (WORDACCESS_UNSAFE) LOCK (reqlock);
612 634 max_idle = nthreads <= 0 ? 1 : nthreads;
613 Newz (0, req, 1, aio_cb); 635 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
614
615 req->type = REQ_QUIT;
616 req->pri = PRI_MAX + PRI_BIAS;
617
618 req_send (req);
619} 636}
620 637
621static void min_parallel (int nthreads) 638static void min_parallel (int nthreads)
622{ 639{
623 if (wanted < nthreads) 640 if (wanted < nthreads)
624 wanted = nthreads; 641 wanted = nthreads;
625} 642}
626 643
627static void max_parallel (int nthreads) 644static void max_parallel (int nthreads)
628{ 645{
629 int cur = started;
630
631 if (wanted > nthreads) 646 if (wanted > nthreads)
632 wanted = nthreads; 647 wanted = nthreads;
633 648
634 while (cur > wanted)
635 {
636 end_thread ();
637 cur--;
638 }
639
640 while (started > wanted) 649 while (started > wanted)
650 end_thread ();
651}
652
653static void poll_wait ()
654{
655 fd_set rfd;
656
657 while (nreqs)
658 {
659 int size;
660 if (WORDACCESS_UNSAFE) LOCK (reslock);
661 size = res_queue.size;
662 if (WORDACCESS_UNSAFE) UNLOCK (reslock);
663
664 if (size)
665 return;
666
667 maybe_start_thread ();
668
669 FD_ZERO(&rfd);
670 FD_SET(respipe [0], &rfd);
671
672 select (respipe [0] + 1, &rfd, 0, 0, 0);
641 { 673 }
674}
675
676static int poll_cb ()
677{
678 dSP;
679 int count = 0;
680 int maxreqs = max_poll_reqs;
681 int do_croak = 0;
682 struct timeval tv_start, tv_now;
683 aio_req req;
684
685 if (max_poll_time)
686 gettimeofday (&tv_start, 0);
687
688 for (;;)
689 {
690 for (;;)
691 {
692 maybe_start_thread ();
693
694 LOCK (reslock);
695 req = reqq_shift (&res_queue);
696
697 if (req)
698 {
699 --npending;
700
701 if (!res_queue.size)
702 {
703 /* read any signals sent by the worker threads */
704 char buf [32];
705 while (read (respipe [0], buf, 32) == 32)
706 ;
707 }
708 }
709
710 UNLOCK (reslock);
711
712 if (!req)
713 break;
714
715 --nreqs;
716
717 if (req->type == REQ_GROUP && req->length)
718 {
719 req->fd = 1; /* mark request as delayed */
720 continue;
721 }
722 else
723 {
724 if (req->type == REQ_READ)
725 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
726
727 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
728 SvREADONLY_off (req->data);
729
730 if (req->statdata)
731 {
732 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
733 PL_laststatval = req->result;
734 PL_statcache = *(req->statdata);
735 }
736
737 req_invoke (req);
738
739 count++;
740 }
741
742 req_free (req);
743
744 if (maxreqs && !--maxreqs)
745 break;
746
747 if (max_poll_time)
748 {
749 gettimeofday (&tv_now, 0);
750
751 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
752 break;
753 }
754 }
755
756 if (nreqs <= max_outstanding)
757 break;
758
642 poll_wait (); 759 poll_wait ();
643 poll_cb (); 760
761 ++maxreqs;
644 } 762 }
763
764 return count;
645} 765}
646 766
647static void create_pipe () 767static void create_pipe ()
648{ 768{
649 if (pipe (respipe)) 769 if (pipe (respipe))
… …
704#if !HAVE_FDATASYNC 824#if !HAVE_FDATASYNC
705# define fdatasync fsync 825# define fdatasync fsync
706#endif 826#endif
707 827
708#if !HAVE_READAHEAD 828#if !HAVE_READAHEAD
709# define readahead aio_readahead 829# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
710 830
711static ssize_t readahead (int fd, off_t offset, size_t count) 831static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
712{ 832{
713 dBUF; 833 dBUF;
714 834
715 while (count > 0) 835 while (count > 0)
716 { 836 {
… …
721 count -= len; 841 count -= len;
722 } 842 }
723 843
724 errno = 0; 844 errno = 0;
725} 845}
846
726#endif 847#endif
727 848
728#if !HAVE_READDIR_R 849#if !HAVE_READDIR_R
729# define readdir_r aio_readdir_r 850# define readdir_r aio_readdir_r
730 851
… …
775 { 896 {
776 off_t sbytes; 897 off_t sbytes;
777 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 898 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
778 899
779 if (res < 0 && sbytes) 900 if (res < 0 && sbytes)
780 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 901 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
781 res = sbytes; 902 res = sbytes;
782 } 903 }
783 904
784# elif __hpux 905# elif __hpux
785 res = sendfile (ofd, ifd, offset, count, 0, 0); 906 res = sendfile (ofd, ifd, offset, count, 0, 0);
… …
865 int errorno; 986 int errorno;
866 987
867 LOCK (wrklock); 988 LOCK (wrklock);
868 self->dirp = dirp = opendir (req->dataptr); 989 self->dirp = dirp = opendir (req->dataptr);
869 self->dbuf = u = malloc (sizeof (*u)); 990 self->dbuf = u = malloc (sizeof (*u));
991 req->data2ptr = names = malloc (memlen);
870 UNLOCK (wrklock); 992 UNLOCK (wrklock);
871
872 req->data2ptr = names = malloc (memlen);
873 993
874 if (dirp && u && names) 994 if (dirp && u && names)
875 for (;;) 995 for (;;)
876 { 996 {
877 errno = 0; 997 errno = 0;
… …
913/*****************************************************************************/ 1033/*****************************************************************************/
914 1034
915static void *aio_proc (void *thr_arg) 1035static void *aio_proc (void *thr_arg)
916{ 1036{
917 aio_req req; 1037 aio_req req;
918 int type; 1038 struct timespec ts;
919 worker *self = (worker *)thr_arg; 1039 worker *self = (worker *)thr_arg;
920 1040
921 do 1041 /* try to distribute timeouts somewhat evenly */
1042 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1043 * (1000000000UL / 1024UL);
1044
1045 for (;;)
922 { 1046 {
1047 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1048
923 LOCK (reqlock); 1049 LOCK (reqlock);
924 1050
925 for (;;) 1051 for (;;)
926 { 1052 {
927 self->req = req = reqq_shift (&req_queue); 1053 self->req = req = reqq_shift (&req_queue);
928 1054
929 if (req) 1055 if (req)
930 break; 1056 break;
931 1057
1058 ++idle;
1059
1060 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1061 == ETIMEDOUT)
1062 {
1063 if (idle > max_idle)
1064 {
1065 --idle;
1066 UNLOCK (reqlock);
1067 LOCK (wrklock);
1068 --started;
1069 UNLOCK (wrklock);
1070 goto quit;
1071 }
1072
1073 /* we are allowed to idle, so do so without any timeout */
932 pthread_cond_wait (&reqwait, &reqlock); 1074 pthread_cond_wait (&reqwait, &reqlock);
1075 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1076 }
1077
1078 --idle;
933 } 1079 }
1080
1081 --nready;
934 1082
935 UNLOCK (reqlock); 1083 UNLOCK (reqlock);
936 1084
937 errno = 0; /* strictly unnecessary */ 1085 errno = 0; /* strictly unnecessary */
938 type = req->type; /* remember type for QUIT check */
939 1086
940 if (!(req->flags & FLAG_CANCELLED)) 1087 if (!(req->flags & FLAG_CANCELLED))
941 switch (type) 1088 switch (req->type)
942 { 1089 {
943 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 1090 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
944 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 1091 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
945 1092
946 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 1093 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
… …
955 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 1102 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
956 case REQ_RMDIR: req->result = rmdir (req->dataptr); break; 1103 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
957 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; 1104 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
958 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; 1105 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
959 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 1106 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1107 case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
960 1108
961 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 1109 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
962 case REQ_FSYNC: req->result = fsync (req->fd); break; 1110 case REQ_FSYNC: req->result = fsync (req->fd); break;
963 case REQ_READDIR: scandir_ (req, self); break; 1111 case REQ_READDIR: scandir_ (req, self); break;
964 1112
… …
972 req->result = select (0, 0, 0, 0, &tv); 1120 req->result = select (0, 0, 0, 0, &tv);
973 } 1121 }
974 1122
975 case REQ_GROUP: 1123 case REQ_GROUP:
976 case REQ_NOP: 1124 case REQ_NOP:
1125 break;
1126
977 case REQ_QUIT: 1127 case REQ_QUIT:
978 break; 1128 goto quit;
979 1129
980 default: 1130 default:
981 req->result = ENOSYS; 1131 req->result = ENOSYS;
982 break; 1132 break;
983 } 1133 }
984 1134
985 req->errorno = errno; 1135 req->errorno = errno;
986 1136
987 LOCK (reslock); 1137 LOCK (reslock);
988 1138
1139 ++npending;
1140
989 if (!reqq_push (&res_queue, req)) 1141 if (!reqq_push (&res_queue, req))
990 /* write a dummy byte to the pipe so fh becomes ready */ 1142 /* write a dummy byte to the pipe so fh becomes ready */
991 write (respipe [1], &respipe, 1); 1143 write (respipe [1], &respipe, 1);
992 1144
993 self->req = 0; 1145 self->req = 0;
994 worker_clear (self); 1146 worker_clear (self);
995 1147
996 UNLOCK (reslock); 1148 UNLOCK (reslock);
997 } 1149 }
998 while (type != REQ_QUIT);
999 1150
1151quit:
1000 LOCK (wrklock); 1152 LOCK (wrklock);
1001 worker_free (self); 1153 worker_free (self);
1002 UNLOCK (wrklock); 1154 UNLOCK (wrklock);
1003 1155
1004 return 0; 1156 return 0;
… …
1051 1203
1052 worker_clear (wrk); 1204 worker_clear (wrk);
1053 worker_free (wrk); 1205 worker_free (wrk);
1054 } 1206 }
1055 1207
1056 started = 0; 1208 started = 0;
1209 idle = 0;
1057 nreqs = 0; 1210 nreqs = 0;
1211 nready = 0;
1212 npending = 0;
1058 1213
1059 close (respipe [0]); 1214 close (respipe [0]);
1060 close (respipe [1]); 1215 close (respipe [1]);
1061 create_pipe (); 1216 create_pipe ();
1062 1217
… …
1089PROTOTYPES: ENABLE 1244PROTOTYPES: ENABLE
1090 1245
1091BOOT: 1246BOOT:
1092{ 1247{
1093 HV *stash = gv_stashpv ("IO::AIO", 1); 1248 HV *stash = gv_stashpv ("IO::AIO", 1);
1249
1094 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1250 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1095 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1251 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1096 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); 1252 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1253 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1254 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1255 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1097 1256
1098 create_pipe (); 1257 create_pipe ();
1099 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1258 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1100} 1259}
1101 1260
1102void 1261void
1103min_parallel (nthreads) 1262max_poll_reqs (int nreqs)
1104 int nthreads
1105 PROTOTYPE: $ 1263 PROTOTYPE: $
1264 CODE:
1265 max_poll_reqs = nreqs;
1106 1266
1107void 1267void
1108max_parallel (nthreads) 1268max_poll_time (double nseconds)
1109 int nthreads
1110 PROTOTYPE: $ 1269 PROTOTYPE: $
1270 CODE:
1271 max_poll_time = nseconds * AIO_TICKS;
1272
1273void
1274min_parallel (int nthreads)
1275 PROTOTYPE: $
1276
1277void
1278max_parallel (int nthreads)
1279 PROTOTYPE: $
1280
1281void
1282max_idle (int nthreads)
1283 PROTOTYPE: $
1284 CODE:
1285 set_max_idle (nthreads);
1111 1286
1112int 1287int
1113max_outstanding (nreqs) 1288max_outstanding (int maxreqs)
1114 int nreqs 1289 PROTOTYPE: $
1115 PROTOTYPE: $
1116 CODE: 1290 CODE:
1117 RETVAL = max_outstanding; 1291 RETVAL = max_outstanding;
1118 max_outstanding = nreqs; 1292 max_outstanding = maxreqs;
1293 OUTPUT:
1294 RETVAL
1119 1295
1120void 1296void
1121aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1297aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1122 SV * pathname 1298 SV * pathname
1123 int flags 1299 int flags
… …
1338 1514
1339 REQ_SEND; 1515 REQ_SEND;
1340} 1516}
1341 1517
1342void 1518void
1519aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1520 SV * pathname
1521 SV * callback
1522 UV mode
1523 UV dev
1524 PPCODE:
1525{
1526 dREQ;
1527
1528 req->type = REQ_MKNOD;
1529 req->data = newSVsv (pathname);
1530 req->dataptr = SvPVbyte_nolen (req->data);
1531 req->mode = (mode_t)mode;
1532 req->offset = dev;
1533
1534 REQ_SEND;
1535}
1536
1537void
1343aio_busy (delay,callback=&PL_sv_undef) 1538aio_busy (delay,callback=&PL_sv_undef)
1344 double delay 1539 double delay
1345 SV * callback 1540 SV * callback
1346 PPCODE: 1541 PPCODE:
1347{ 1542{
… …
1378 req->type = REQ_NOP; 1573 req->type = REQ_NOP;
1379 1574
1380 REQ_SEND; 1575 REQ_SEND;
1381} 1576}
1382 1577
1383void 1578int
1384aioreq_pri (int pri = DEFAULT_PRI) 1579aioreq_pri (int pri = 0)
1385 CODE: 1580 PROTOTYPE: ;$
1581 CODE:
1582 RETVAL = next_pri - PRI_BIAS;
1583 if (items > 0)
1584 {
1386 if (pri < PRI_MIN) pri = PRI_MIN; 1585 if (pri < PRI_MIN) pri = PRI_MIN;
1387 if (pri > PRI_MAX) pri = PRI_MAX; 1586 if (pri > PRI_MAX) pri = PRI_MAX;
1388 next_pri = pri + PRI_BIAS; 1587 next_pri = pri + PRI_BIAS;
1588 }
1589 OUTPUT:
1590 RETVAL
1389 1591
1390void 1592void
1391aioreq_nice (int nice = 0) 1593aioreq_nice (int nice = 0)
1392 CODE: 1594 CODE:
1393 nice = next_pri - nice; 1595 nice = next_pri - nice;
1394 if (nice < PRI_MIN) nice = PRI_MIN; 1596 if (nice < PRI_MIN) nice = PRI_MIN;
1395 if (nice > PRI_MAX) nice = PRI_MAX; 1597 if (nice > PRI_MAX) nice = PRI_MAX;
1396 next_pri = nice + PRI_BIAS; 1598 next_pri = nice + PRI_BIAS;
1397 1599
1398void 1600void
1399flush () 1601flush ()
1400 PROTOTYPE: 1602 PROTOTYPE:
1401 CODE: 1603 CODE:
1402 while (nreqs) 1604 while (nreqs)
1403 { 1605 {
1404 poll_wait (); 1606 poll_wait ();
1405 poll_cb (); 1607 poll_cb (0);
1406 } 1608 }
1407 1609
1408void 1610void
1409poll() 1611poll()
1410 PROTOTYPE: 1612 PROTOTYPE:
1411 CODE: 1613 CODE:
1412 if (nreqs) 1614 if (nreqs)
1413 { 1615 {
1414 poll_wait (); 1616 poll_wait ();
1415 poll_cb (); 1617 poll_cb (0);
1416 } 1618 }
1417 1619
1418int 1620int
1419poll_fileno() 1621poll_fileno()
1420 PROTOTYPE: 1622 PROTOTYPE:
… …
1444 CODE: 1646 CODE:
1445 RETVAL = nreqs; 1647 RETVAL = nreqs;
1446 OUTPUT: 1648 OUTPUT:
1447 RETVAL 1649 RETVAL
1448 1650
1651int
1652nready()
1653 PROTOTYPE:
1654 CODE:
1655 RETVAL = get_nready ();
1656 OUTPUT:
1657 RETVAL
1658
1659int
1660npending()
1661 PROTOTYPE:
1662 CODE:
1663 RETVAL = get_npending ();
1664 OUTPUT:
1665 RETVAL
1666
1667int
1668nthreads()
1669 PROTOTYPE:
1670 CODE:
1671 if (WORDACCESS_UNSAFE) LOCK (wrklock);
1672 RETVAL = started;
1673 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1674 OUTPUT:
1675 RETVAL
1676
1449PROTOTYPES: DISABLE 1677PROTOTYPES: DISABLE
1450 1678
1451MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1679MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1452 1680
1453void 1681void
… …
1495 } 1723 }
1496 } 1724 }
1497} 1725}
1498 1726
1499void 1727void
1728cancel_subs (aio_req_ornot req)
1729 CODE:
1730 req_cancel_subs (req);
1731
1732void
1500result (aio_req grp, ...) 1733result (aio_req grp, ...)
1501 CODE: 1734 CODE:
1502{ 1735{
1503 int i; 1736 int i;
1737 AV *av;
1738
1739 grp->errorno = errno;
1740
1504 AV *av = newAV (); 1741 av = newAV ();
1505 1742
1506 for (i = 1; i < items; ++i ) 1743 for (i = 1; i < items; ++i )
1507 av_push (av, newSVsv (ST (i))); 1744 av_push (av, newSVsv (ST (i)));
1508 1745
1509 SvREFCNT_dec (grp->data); 1746 SvREFCNT_dec (grp->data);
1510 grp->data = (SV *)av; 1747 grp->data = (SV *)av;
1511} 1748}
1749
1750void
1751errno (aio_req grp, int errorno = errno)
1752 CODE:
1753 grp->errorno = errorno;
1512 1754
1513void 1755void
1514limit (aio_req grp, int limit) 1756limit (aio_req grp, int limit)
1515 CODE: 1757 CODE:
1516 grp->fd2 = limit; 1758 grp->fd2 = limit;

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