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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.4 by root, Sun Jul 10 20:57:00 2005 UTC vs.
Revision 1.11 by root, Wed Jul 20 21:55:27 2005 UTC

1#define PERL_NO_GET_CONTEXT 1#define _XOPEN_SOURCE 500
2 2
3#include "EXTERN.h" 3#include "EXTERN.h"
4#include "perl.h" 4#include "perl.h"
5#include "XSUB.h" 5#include "XSUB.h"
6 6
7#include <sys/types.h> 7#include <sys/types.h>
8#include <sys/stat.h> 8#include <sys/stat.h>
9
9#include <unistd.h> 10#include <unistd.h>
10#include <fcntl.h> 11#include <fcntl.h>
11#include <signal.h> 12#include <signal.h>
12#include <sched.h> 13#include <sched.h>
13#include <endian.h> 14#if __linux
15#include <sys/syscall.h>
16#endif
14 17
15#include <pthread.h> 18#include <pthread.h>
16#include <sys/syscall.h>
17 19
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 20typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 21typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 22typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
21 23
… …
52} aio_cb; 54} aio_cb;
53 55
54typedef aio_cb *aio_req; 56typedef aio_cb *aio_req;
55 57
56static int started; 58static int started;
57static int nreqs; 59static volatile int nreqs;
58static int max_outstanding = 1<<30; 60static int max_outstanding = 1<<30;
59static int respipe [2]; 61static int respipe [2];
60 62
61static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 63static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
62static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 64static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
… …
66static volatile aio_req ress, rese; /* queue start, queue end */ 68static volatile aio_req ress, rese; /* queue start, queue end */
67 69
68static void 70static void
69poll_wait () 71poll_wait ()
70{ 72{
71 if (!nreqs) 73 if (nreqs && !ress)
72 return; 74 {
73
74 fd_set rfd; 75 fd_set rfd;
75 FD_ZERO(&rfd); 76 FD_ZERO(&rfd);
76 FD_SET(respipe [0], &rfd); 77 FD_SET(respipe [0], &rfd);
77 78
78 select (respipe [0] + 1, &rfd, 0, 0, 0); 79 select (respipe [0] + 1, &rfd, 0, 0, 0);
80 }
79} 81}
80 82
81static int 83static int
82poll_cb (pTHX) 84poll_cb ()
83{ 85{
84 dSP; 86 dSP;
85 int count = 0; 87 int count = 0;
86 aio_req req; 88 aio_req req, prv;
87 89
90 static int rl;//D
91 //printf ("%d ENTER\n", ++rl);//D
92
93 pthread_mutex_lock (&reslock);
94
88 { 95 {
89 /* read and signals sent by the worker threads */ 96 /* read any signals sent by the worker threads */
90 char buf [32]; 97 char buf [32];
91 while (read (respipe [0], buf, 32) > 0) 98 while (read (respipe [0], buf, 32) > 0)
92 ; 99 ;
93 } 100 }
94 101
95 for (;;) 102 req = ress;
103 ress = rese = 0;
104
105 pthread_mutex_unlock (&reslock);
106
107 while (req)
96 { 108 {
97 pthread_mutex_lock (&reslock);
98
99 req = ress;
100
101 if (ress)
102 {
103 ress = ress->next;
104 if (!ress) rese = 0;
105 }
106
107 pthread_mutex_unlock (&reslock);
108
109 if (!req)
110 break;
111
112 nreqs--; 109 nreqs--;
110 //printf ("%d count %d %p->%p\n", rl, count, req, req->next);//D
113 111
114 if (req->type == REQ_QUIT) 112 if (req->type == REQ_QUIT)
115 started--; 113 started--;
116 else 114 else
117 { 115 {
… …
150 148
151 PUSHMARK (SP); 149 PUSHMARK (SP);
152 XPUSHs (fh); 150 XPUSHs (fh);
153 } 151 }
154 152
153 if (SvOK (req->callback))
154 {
155 PUTBACK; 155 PUTBACK;
156 call_sv (req->callback, G_VOID | G_EVAL); 156 call_sv (req->callback, G_VOID | G_EVAL);
157 SPAGAIN; 157 SPAGAIN;
158 }
158 159
159 if (req->callback) 160 if (req->callback)
160 SvREFCNT_dec (req->callback); 161 SvREFCNT_dec (req->callback);
161 162
162 errno = errorno; 163 errno = errorno;
163 count++; 164 count++;
164 } 165 }
165 166
167 prv = req;
168 req = req->next;
166 Safefree (req); 169 Safefree (prv);
170
171 /* TODO: croak on errors? */
167 } 172 }
168 173
174 //printf ("%d LEAVE %p %p\n", rl--, ress, rese);//D
169 return count; 175 return count;
170} 176}
171 177
172static void *aio_proc(void *arg); 178static void *aio_proc(void *arg);
173 179
… …
227 233
228 send_req (req); 234 send_req (req);
229} 235}
230 236
231static void 237static void
232read_write (pTHX_
233 int dowrite, int fd, off_t offset, size_t length, 238read_write (int dowrite, int fd, off_t offset, size_t length,
234 SV *data, STRLEN dataoffset, SV *callback) 239 SV *data, STRLEN dataoffset, SV *callback)
235{ 240{
236 aio_req req; 241 aio_req req;
237 STRLEN svlen; 242 STRLEN svlen;
238 char *svptr = SvPV (data, svlen); 243 char *svptr = SvPV (data, svlen);
… …
309 314
310 type = req->type; 315 type = req->type;
311 316
312 switch (type) 317 switch (type)
313 { 318 {
314 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; 319 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
315 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; 320 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
316#if SYS_readahead 321#if SYS_readahead
317 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 322 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
318#else 323#else
319 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; 324 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
320#endif 325#endif
… …
364 return 0; 369 return 0;
365} 370}
366 371
367MODULE = IO::AIO PACKAGE = IO::AIO 372MODULE = IO::AIO PACKAGE = IO::AIO
368 373
374PROTOTYPES: ENABLE
375
369BOOT: 376BOOT:
370{ 377{
371 if (pipe (respipe)) 378 if (pipe (respipe))
372 croak ("unable to initialize result pipe"); 379 croak ("unable to initialize result pipe");
373 380
… …
400 } 407 }
401 408
402 while (started > nthreads) 409 while (started > nthreads)
403 { 410 {
404 poll_wait (); 411 poll_wait ();
405 poll_cb (aTHX); 412 poll_cb ();
406 } 413 }
407} 414}
408 415
409int 416int
410max_outstanding(nreqs) 417max_outstanding(nreqs)
… …
413 CODE: 420 CODE:
414 RETVAL = max_outstanding; 421 RETVAL = max_outstanding;
415 max_outstanding = nreqs; 422 max_outstanding = nreqs;
416 423
417void 424void
418aio_open(pathname,flags,mode,callback) 425aio_open(pathname,flags,mode,callback=&PL_sv_undef)
419 SV * pathname 426 SV * pathname
420 int flags 427 int flags
421 int mode 428 int mode
422 SV * callback 429 SV * callback
423 PROTOTYPE: $$$$ 430 PROTOTYPE: $$$;$
424 CODE: 431 CODE:
425{ 432{
426 aio_req req; 433 aio_req req;
427 434
428 Newz (0, req, 1, aio_cb); 435 Newz (0, req, 1, aio_cb);
… …
439 446
440 send_req (req); 447 send_req (req);
441} 448}
442 449
443void 450void
444aio_close(fh,callback) 451aio_close(fh,callback=&PL_sv_undef)
445 InputStream fh 452 InputStream fh
446 SV * callback 453 SV * callback
447 PROTOTYPE: $$ 454 PROTOTYPE: $;$
448 ALIAS: 455 ALIAS:
449 aio_close = REQ_CLOSE 456 aio_close = REQ_CLOSE
450 aio_fsync = REQ_FSYNC 457 aio_fsync = REQ_FSYNC
451 aio_fdatasync = REQ_FDATASYNC 458 aio_fdatasync = REQ_FDATASYNC
452 CODE: 459 CODE:
… …
464 471
465 send_req (req); 472 send_req (req);
466} 473}
467 474
468void 475void
469aio_read(fh,offset,length,data,dataoffset,callback) 476aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
470 InputStream fh 477 InputStream fh
471 UV offset 478 UV offset
472 IV length 479 IV length
473 SV * data 480 SV * data
474 IV dataoffset 481 IV dataoffset
475 SV * callback 482 SV * callback
476 PROTOTYPE: $$$$$$ 483 PROTOTYPE: $$$$$;$
477 CODE: 484 CODE:
478 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 485 read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
479 486
480void 487void
481aio_write(fh,offset,length,data,dataoffset,callback) 488aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
482 OutputStream fh 489 OutputStream fh
483 UV offset 490 UV offset
484 IV length 491 IV length
485 SV * data 492 SV * data
486 IV dataoffset 493 IV dataoffset
487 SV * callback 494 SV * callback
488 PROTOTYPE: $$$$$$ 495 PROTOTYPE: $$$$$;$
489 CODE: 496 CODE:
490 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 497 read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
491 498
492void 499void
493aio_readahead(fh,offset,length,callback) 500aio_readahead(fh,offset,length,callback=&PL_sv_undef)
494 InputStream fh 501 InputStream fh
495 UV offset 502 UV offset
496 IV length 503 IV length
497 SV * callback 504 SV * callback
498 PROTOTYPE: $$$$ 505 PROTOTYPE: $$$;$
499 CODE: 506 CODE:
500{ 507{
501 aio_req req; 508 aio_req req;
502 509
503 if (length < 0) 510 if (length < 0)
… …
516 523
517 send_req (req); 524 send_req (req);
518} 525}
519 526
520void 527void
521aio_stat(fh_or_path,callback) 528aio_stat(fh_or_path,callback=&PL_sv_undef)
522 SV * fh_or_path 529 SV * fh_or_path
523 SV * callback 530 SV * callback
524 PROTOTYPE: $$
525 ALIAS: 531 ALIAS:
532 aio_stat = REQ_STAT
526 aio_lstat = 1 533 aio_lstat = REQ_LSTAT
527 CODE: 534 CODE:
528{ 535{
529 aio_req req; 536 aio_req req;
530 537
531 Newz (0, req, 1, aio_cb); 538 Newz (0, req, 1, aio_cb);
… …
538 if (!req->statdata) 545 if (!req->statdata)
539 croak ("out of memory during aio_req->statdata allocation"); 546 croak ("out of memory during aio_req->statdata allocation");
540 547
541 if (SvPOK (fh_or_path)) 548 if (SvPOK (fh_or_path))
542 { 549 {
543 req->type = ix ? REQ_LSTAT : REQ_STAT; 550 req->type = ix;
544 req->data = newSVsv (fh_or_path); 551 req->data = newSVsv (fh_or_path);
545 req->dataptr = SvPV_nolen (req->data); 552 req->dataptr = SvPV_nolen (req->data);
546 } 553 }
547 else 554 else
548 { 555 {
… …
554 561
555 send_req (req); 562 send_req (req);
556} 563}
557 564
558void 565void
559aio_unlink(pathname,callback) 566aio_unlink(pathname,callback=&PL_sv_undef)
560 SV * pathname 567 SV * pathname
561 SV * callback 568 SV * callback
562 PROTOTYPE: $$
563 CODE: 569 CODE:
564{ 570{
565 aio_req req; 571 aio_req req;
566 572
567 Newz (0, req, 1, aio_cb); 573 Newz (0, req, 1, aio_cb);
… …
575 req->callback = SvREFCNT_inc (callback); 581 req->callback = SvREFCNT_inc (callback);
576 582
577 send_req (req); 583 send_req (req);
578} 584}
579 585
586void
587flush()
588 PROTOTYPE:
589 CODE:
590 while (nreqs)
591 {
592 poll_wait ();
593 poll_cb ();
594 }
595
596void
597poll()
598 PROTOTYPE:
599 CODE:
600 if (nreqs)
601 {
602 poll_wait ();
603 poll_cb ();
604 }
605
580int 606int
581poll_fileno() 607poll_fileno()
582 PROTOTYPE: 608 PROTOTYPE:
583 CODE: 609 CODE:
584 RETVAL = respipe [0]; 610 RETVAL = respipe [0];
… …
587 613
588int 614int
589poll_cb(...) 615poll_cb(...)
590 PROTOTYPE: 616 PROTOTYPE:
591 CODE: 617 CODE:
592 RETVAL = poll_cb (aTHX); 618 RETVAL = poll_cb ();
593 OUTPUT: 619 OUTPUT:
594 RETVAL 620 RETVAL
595 621
596void 622void
597poll_wait() 623poll_wait()

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