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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.28 by root, Wed Aug 17 05:06:59 2005 UTC vs.
Revision 1.36 by root, Tue Aug 23 01:18:04 2005 UTC

… …
4#include "EXTERN.h" 4#include "EXTERN.h"
5#include "perl.h" 5#include "perl.h"
6#include "XSUB.h" 6#include "XSUB.h"
7 7
8#include "autoconf/config.h" 8#include "autoconf/config.h"
9
10#include <pthread.h>
9 11
10#include <sys/types.h> 12#include <sys/types.h>
11#include <sys/stat.h> 13#include <sys/stat.h>
12 14
13#include <unistd.h> 15#include <unistd.h>
14#include <fcntl.h> 16#include <fcntl.h>
15#include <signal.h> 17#include <signal.h>
16#include <sched.h> 18#include <sched.h>
17 19
18#include <pthread.h> 20#if HAVE_SENDFILE
19 21# if __linux
20typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 22# include <sys/sendfile.h>
21typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 23# elif __freebsd
22typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 24# include <sys/socket.h>
25# include <sys/uio.h>
26# elif __hpux
27# include <sys/socket.h>
28# elif __solaris /* not yet */
29# include <sys/sendfile.h>
30# else
31# error sendfile support requested but not available
32# endif
33#endif
23 34
24#if __ia64 35#if __ia64
25# define STACKSIZE 65536 36# define STACKSIZE 65536
26#else 37#else
27# define STACKSIZE 4096 38# define STACKSIZE 4096
… …
29 40
30enum { 41enum {
31 REQ_QUIT, 42 REQ_QUIT,
32 REQ_OPEN, REQ_CLOSE, 43 REQ_OPEN, REQ_CLOSE,
33 REQ_READ, REQ_WRITE, REQ_READAHEAD, 44 REQ_READ, REQ_WRITE, REQ_READAHEAD,
45 REQ_SENDFILE,
34 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 46 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35 REQ_FSYNC, REQ_FDATASYNC, 47 REQ_FSYNC, REQ_FDATASYNC,
36 REQ_UNLINK, REQ_RMDIR, 48 REQ_UNLINK, REQ_RMDIR,
37 REQ_SYMLINK, 49 REQ_SYMLINK,
38}; 50};
… …
40typedef struct aio_cb { 52typedef struct aio_cb {
41 struct aio_cb *volatile next; 53 struct aio_cb *volatile next;
42 54
43 int type; 55 int type;
44 56
45 int fd; 57 int fd, fd2;
46 off_t offset; 58 off_t offset;
47 size_t length; 59 size_t length;
48 ssize_t result; 60 ssize_t result;
49 mode_t mode; /* open */ 61 mode_t mode; /* open */
50 int errorno; 62 int errorno;
51 SV *data, *callback, *fh; 63 SV *data, *callback;
64 SV *fh, *fh2;
52 void *dataptr, *data2ptr; 65 void *dataptr, *data2ptr;
53 STRLEN dataoffset; 66 STRLEN dataoffset;
54 67
55 Stat_t *statdata; 68 Stat_t *statdata;
56} aio_cb; 69} aio_cb;
57 70
58typedef aio_cb *aio_req; 71typedef aio_cb *aio_req;
59 72
60static int started; 73static int started, wanted;
61static volatile int nreqs; 74static volatile int nreqs;
62static int max_outstanding = 1<<30; 75static int max_outstanding = 1<<30;
63static int respipe [2]; 76static int respipe [2];
64 77
65static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 78static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
… …
74 if (req->data) 87 if (req->data)
75 SvREFCNT_dec (req->data); 88 SvREFCNT_dec (req->data);
76 89
77 if (req->fh) 90 if (req->fh)
78 SvREFCNT_dec (req->fh); 91 SvREFCNT_dec (req->fh);
92
93 if (req->fh2)
94 SvREFCNT_dec (req->fh2);
79 95
80 if (req->statdata) 96 if (req->statdata)
81 Safefree (req->statdata); 97 Safefree (req->statdata);
82 98
83 if (req->callback) 99 if (req->callback)
… …
116 { 132 {
117 ress = req->next; 133 ress = req->next;
118 134
119 if (!ress) 135 if (!ress)
120 { 136 {
121 rese = 0;
122
123 /* read any signals sent by the worker threads */ 137 /* read any signals sent by the worker threads */
124 char buf [32]; 138 char buf [32];
125 while (read (respipe [0], buf, 32) == 32) 139 while (read (respipe [0], buf, 32) == 32)
126 ; 140 ;
141
142 rese = 0;
127 } 143 }
128 } 144 }
129 145
130 pthread_mutex_unlock (&reslock); 146 pthread_mutex_unlock (&reslock);
131 147
… …
221} 237}
222 238
223static void 239static void
224send_req (aio_req req) 240send_req (aio_req req)
225{ 241{
242 while (started < wanted && nreqs >= started)
243 start_thread ();
244
226 nreqs++; 245 nreqs++;
227 246
228 pthread_mutex_lock (&reqlock); 247 pthread_mutex_lock (&reqlock);
229 248
230 req->next = 0; 249 req->next = 0;
… …
262 send_req (req); 281 send_req (req);
263} 282}
264 283
265static void min_parallel (int nthreads) 284static void min_parallel (int nthreads)
266{ 285{
267 while (nthreads > started) 286 if (wanted < nthreads)
268 start_thread (); 287 wanted = nthreads;
269} 288}
270 289
271static void max_parallel (int nthreads) 290static void max_parallel (int nthreads)
272{ 291{
273 int cur = started; 292 int cur = started;
274 293
294 if (wanted > nthreads)
295 wanted = nthreads;
296
275 while (cur > nthreads) 297 while (cur > wanted)
276 { 298 {
277 end_thread (); 299 end_thread ();
278 cur--; 300 cur--;
279 } 301 }
280 302
281 while (started > nthreads) 303 while (started > wanted)
282 { 304 {
283 poll_wait (); 305 poll_wait ();
284 poll_cb (); 306 poll_cb ();
285 } 307 }
286} 308}
… …
311 333
312static void atfork_child (void) 334static void atfork_child (void)
313{ 335{
314 aio_req prv; 336 aio_req prv;
315 337
316 int restart = started;
317 started = 0; 338 started = 0;
318 339
319 while (reqs) 340 while (reqs)
320 { 341 {
321 prv = reqs; 342 prv = reqs;
… …
332 free_req (prv); 353 free_req (prv);
333 } 354 }
334 355
335 ress = rese = 0; 356 ress = rese = 0;
336 357
358 close (respipe [0]);
359 close (respipe [1]);
360 create_pipe ();
361
337 atfork_parent (); 362 atfork_parent ();
338
339 min_parallel (restart);
340} 363}
341 364
342/*****************************************************************************/ 365/*****************************************************************************/
343/* work around various missing functions */ 366/* work around various missing functions */
344 367
… …
409 432
410 errno = 0; 433 errno = 0;
411} 434}
412#endif 435#endif
413 436
437/* sendfile always needs emulation */
438static ssize_t
439sendfile_ (int ofd, int ifd, off_t offset, size_t count)
440{
441 ssize_t res;
442
443 if (!count)
444 return 0;
445
446#if HAVE_SENDFILE
447# if __linux
448 res = sendfile (ofd, ifd, &offset, count);
449
450# elif __freebsd
451 /*
452 * Of course, the freebsd sendfile is a dire hack with no thoughts
453 * wasted on making it similar to other I/O functions.
454 */
455 {
456 off_t sbytes;
457 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
458
459 if (res < 0 && sbytes)
460 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
461 res = sbytes;
462 }
463
464# elif __hpux
465 res = sendfile (ofd, ifd, offset, count, 0, 0);
466
467# elif __solaris
468 {
469 struct sendfilevec vec;
470 size_t sbytes;
471
472 vec.sfv_fd = ifd;
473 vec.sfv_flag = 0;
474 vec.sfv_off = offset;
475 vec.sfv_len = count;
476
477 res = sendfilev (ofd, &vec, 1, &sbytes);
478
479 if (res < 0 && sbytes)
480 res = sbytes;
481 }
482
483# else
484 res = -1;
485 errno = ENOSYS;
486# endif
487#endif
488
489 if (res < 0
490 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
491#if __solaris
492 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
493#endif
494 )
495 )
496 {
497 /* emulate sendfile. this is a major pain in the ass */
498 char *buf = malloc (4096);
499 res = 0;
500
501 for (;;)
502 {
503 ssize_t cnt;
504
505 cnt = pread (ifd, buf, 4096, offset);
506
507 if (cnt <= 0)
508 {
509 if (cnt && !res) res = -1;
510 break;
511 }
512
513 cnt = write (ofd, buf, cnt);
514
515 if (cnt <= 0)
516 {
517 if (cnt && !res) res = -1;
518 break;
519 }
520
521 offset += cnt;
522 res += cnt;
523 }
524
525 {
526 int errorno = errno;
527 free (buf);
528 errno = errorno;
529 }
530 }
531
532 return res;
533}
534
414/*****************************************************************************/ 535/*****************************************************************************/
415 536
416static void * 537static void *
417aio_proc (void *thr_arg) 538aio_proc (void *thr_arg)
418{ 539{
… …
449 { 570 {
450 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 571 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
451 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 572 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
452 573
453 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 574 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
575 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
454 576
455 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 577 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
456 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 578 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
457 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 579 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
458 580
… …
581 703
582void 704void
583aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 705aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
584 SV * fh 706 SV * fh
585 UV offset 707 UV offset
586 IV length 708 UV length
587 SV * data 709 SV * data
588 IV dataoffset 710 UV dataoffset
589 SV * callback 711 SV * callback
590 ALIAS: 712 ALIAS:
591 aio_read = REQ_READ 713 aio_read = REQ_READ
592 aio_write = REQ_WRITE 714 aio_write = REQ_WRITE
593 PROTOTYPE: $$$$$;$ 715 PROTOTYPE: $$$$$;$
… …
639 req->data2ptr = (void *)data; 761 req->data2ptr = (void *)data;
640 } 762 }
641 763
642 send_req (req); 764 send_req (req);
643 } 765 }
766}
767
768void
769aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
770 SV * out_fh
771 SV * in_fh
772 UV in_offset
773 UV length
774 SV * callback
775 PROTOTYPE: $$$$;$
776 CODE:
777{
778 dREQ;
779
780 req->type = REQ_SENDFILE;
781 req->fh = newSVsv (out_fh);
782 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
783 req->fh2 = newSVsv (in_fh);
784 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
785 req->offset = in_offset;
786 req->length = length;
787
788 send_req (req);
644} 789}
645 790
646void 791void
647aio_readahead(fh,offset,length,callback=&PL_sv_undef) 792aio_readahead(fh,offset,length,callback=&PL_sv_undef)
648 SV * fh 793 SV * fh

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