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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.74 by root, Wed Oct 25 17:57:30 2006 UTC vs.
Revision 1.78 by root, Thu Oct 26 14:35:34 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
… …
126 NUM_PRI = PRI_MAX + PRI_BIAS + 1, 132 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127}; 133};
128 134
129static int next_pri = DEFAULT_PRI + PRI_BIAS; 135static int next_pri = DEFAULT_PRI + PRI_BIAS;
130 136
131static int started, wanted; 137static unsigned int started, wanted;
132static volatile int nreqs; 138static volatile unsigned int nreqs;
139static volatile unsigned int max_outstanding = 0xffffffff;
133static int respipe [2]; 140static int respipe [2];
134 141
135#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 142#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
136# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP 143# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
137#else 144#else
… …
139#endif 146#endif
140 147
141#define LOCK(mutex) pthread_mutex_lock (&(mutex)) 148#define LOCK(mutex) pthread_mutex_lock (&(mutex))
142#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) 149#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
143 150
144/* worker threasd management */ 151/* worker threads management */
145static pthread_mutex_t wrklock = AIO_MUTEX_INIT; 152static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
146 153
147typedef struct worker { 154typedef struct worker {
148 /* locked by wrklock */ 155 /* locked by wrklock */
149 struct worker *prev, *next; 156 struct worker *prev, *next;
… …
237 } 244 }
238 245
239 abort (); 246 abort ();
240} 247}
241 248
242static int poll_cb (); 249static int poll_cb (int max);
243static void req_invoke (aio_req req); 250static void req_invoke (aio_req req);
244static void req_free (aio_req req); 251static void req_free (aio_req req);
245static void req_cancel (aio_req req); 252static void req_cancel (aio_req req);
246 253
247/* must be called at most once */ 254/* must be called at most once */
… …
490 req->flags |= FLAG_CANCELLED; 497 req->flags |= FLAG_CANCELLED;
491 498
492 req_cancel_subs (req); 499 req_cancel_subs (req);
493} 500}
494 501
495static int poll_cb () 502static int poll_cb (int max)
496{ 503{
497 dSP; 504 dSP;
498 int count = 0; 505 int count = 0;
499 int do_croak = 0; 506 int do_croak = 0;
500 aio_req req; 507 aio_req req;
501 508
502 for (;;) 509 for (;;)
503 { 510 {
504 LOCK (reslock); 511 while (max <= 0 || count < max)
505 req = reqq_shift (&res_queue);
506
507 if (req)
508 { 512 {
513 LOCK (reslock);
514 req = reqq_shift (&res_queue);
515
509 if (!res_queue.size) 516 if (req)
510 { 517 {
518 if (!res_queue.size)
519 {
511 /* read any signals sent by the worker threads */ 520 /* read any signals sent by the worker threads */
512 char buf [32]; 521 char buf [32];
513 while (read (respipe [0], buf, 32) == 32) 522 while (read (respipe [0], buf, 32) == 32)
523 ;
514 ; 524 }
515 } 525 }
526
527 UNLOCK (reslock);
528
529 if (!req)
530 break;
531
532 --nreqs;
533
534 if (req->type == REQ_QUIT)
535 --started;
536 else if (req->type == REQ_GROUP && req->length)
537 {
538 req->fd = 1; /* mark request as delayed */
539 continue;
540 }
541 else
542 {
543 if (req->type == REQ_READ)
544 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
545
546 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
547 SvREADONLY_off (req->data);
548
549 if (req->statdata)
550 {
551 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
552 PL_laststatval = req->result;
553 PL_statcache = *(req->statdata);
554 }
555
556 req_invoke (req);
557
558 count++;
559 }
560
561 req_free (req);
516 } 562 }
517 563
518 UNLOCK (reslock); 564 if (nreqs <= max_outstanding)
519
520 if (!req)
521 break; 565 break;
522 566
523 --nreqs; 567 poll_wait ();
524 568
525 if (req->type == REQ_QUIT) 569 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 } 570 }
554 571
555 return count; 572 return count;
556} 573}
557 574
… …
580 { 597 {
581 wrk->prev = &wrk_first; 598 wrk->prev = &wrk_first;
582 wrk->next = wrk_first.next; 599 wrk->next = wrk_first.next;
583 wrk_first.next->prev = wrk; 600 wrk_first.next->prev = wrk;
584 wrk_first.next = wrk; 601 wrk_first.next = wrk;
585 started++; 602 ++started;
586 } 603 }
587 else 604 else
588 free (wrk); 605 free (wrk);
589 606
590 sigprocmask (SIG_SETMASK, &oldsigset, 0); 607 sigprocmask (SIG_SETMASK, &oldsigset, 0);
… …
636 } 653 }
637 654
638 while (started > wanted) 655 while (started > wanted)
639 { 656 {
640 poll_wait (); 657 poll_wait ();
641 poll_cb (); 658 poll_cb (0);
642 } 659 }
643} 660}
644 661
645static void create_pipe () 662static void create_pipe ()
646{ 663{
… …
702#if !HAVE_FDATASYNC 719#if !HAVE_FDATASYNC
703# define fdatasync fsync 720# define fdatasync fsync
704#endif 721#endif
705 722
706#if !HAVE_READAHEAD 723#if !HAVE_READAHEAD
707# define readahead aio_readahead 724# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
708 725
709static ssize_t readahead (int fd, off_t offset, size_t count) 726static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
710{ 727{
711 dBUF; 728 dBUF;
712 729
713 while (count > 0) 730 while (count > 0)
714 { 731 {
… …
719 count -= len; 736 count -= len;
720 } 737 }
721 738
722 errno = 0; 739 errno = 0;
723} 740}
741
724#endif 742#endif
725 743
726#if !HAVE_READDIR_R 744#if !HAVE_READDIR_R
727# define readdir_r aio_readdir_r 745# define readdir_r aio_readdir_r
728 746
… …
773 { 791 {
774 off_t sbytes; 792 off_t sbytes;
775 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 793 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
776 794
777 if (res < 0 && sbytes) 795 if (res < 0 && sbytes)
778 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 796 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
779 res = sbytes; 797 res = sbytes;
780 } 798 }
781 799
782# elif __hpux 800# elif __hpux
783 res = sendfile (ofd, ifd, offset, count, 0, 0); 801 res = sendfile (ofd, ifd, offset, count, 0, 0);
… …
863 int errorno; 881 int errorno;
864 882
865 LOCK (wrklock); 883 LOCK (wrklock);
866 self->dirp = dirp = opendir (req->dataptr); 884 self->dirp = dirp = opendir (req->dataptr);
867 self->dbuf = u = malloc (sizeof (*u)); 885 self->dbuf = u = malloc (sizeof (*u));
886 req->data2ptr = names = malloc (memlen);
868 UNLOCK (wrklock); 887 UNLOCK (wrklock);
869
870 req->data2ptr = names = malloc (memlen);
871 888
872 if (dirp && u && names) 889 if (dirp && u && names)
873 for (;;) 890 for (;;)
874 { 891 {
875 errno = 0; 892 errno = 0;
… …
1096 create_pipe (); 1113 create_pipe ();
1097 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1114 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1098} 1115}
1099 1116
1100void 1117void
1101min_parallel (nthreads) 1118min_parallel (int nthreads)
1102 int nthreads
1103 PROTOTYPE: $ 1119 PROTOTYPE: $
1104 1120
1105void 1121void
1106max_parallel (nthreads) 1122max_parallel (int nthreads)
1107 int nthreads
1108 PROTOTYPE: $ 1123 PROTOTYPE: $
1124
1125int
1126max_outstanding (int maxreqs)
1127 PROTOTYPE: $
1128 CODE:
1129 RETVAL = max_outstanding;
1130 max_outstanding = maxreqs;
1131 OUTPUT:
1132 RETVAL
1109 1133
1110void 1134void
1111aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1135aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1112 SV * pathname 1136 SV * pathname
1113 int flags 1137 int flags
… …
1390 PROTOTYPE: 1414 PROTOTYPE:
1391 CODE: 1415 CODE:
1392 while (nreqs) 1416 while (nreqs)
1393 { 1417 {
1394 poll_wait (); 1418 poll_wait ();
1395 poll_cb (); 1419 poll_cb (0);
1396 } 1420 }
1397 1421
1398void 1422void
1399poll() 1423poll()
1400 PROTOTYPE: 1424 PROTOTYPE:
1401 CODE: 1425 CODE:
1402 if (nreqs) 1426 if (nreqs)
1403 { 1427 {
1404 poll_wait (); 1428 poll_wait ();
1405 poll_cb (); 1429 poll_cb (0);
1406 } 1430 }
1407 1431
1408int 1432int
1409poll_fileno() 1433poll_fileno()
1410 PROTOTYPE: 1434 PROTOTYPE:
… …
1415 1439
1416int 1440int
1417poll_cb(...) 1441poll_cb(...)
1418 PROTOTYPE: 1442 PROTOTYPE:
1419 CODE: 1443 CODE:
1420 RETVAL = poll_cb (); 1444 RETVAL = poll_cb (0);
1445 OUTPUT:
1446 RETVAL
1447
1448int
1449poll_some(int max = 0)
1450 PROTOTYPE: $
1451 CODE:
1452 RETVAL = poll_cb (max);
1421 OUTPUT: 1453 OUTPUT:
1422 RETVAL 1454 RETVAL
1423 1455
1424void 1456void
1425poll_wait() 1457poll_wait()

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