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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 1.14 by root, Sat Jul 23 18:15:36 2005 UTC

1#define PERL_NO_GET_CONTEXT
2
3#include "EXTERN.h"
4#include "perl.h" 1#include "perl.h"
5#include "XSUB.h" 2#include "XSUB.h"
6 3
7#include <sys/types.h> 4#include <sys/types.h>
8#include <sys/stat.h> 5#include <sys/stat.h>
6
9#include <unistd.h> 7#include <unistd.h>
10#include <fcntl.h> 8#include <fcntl.h>
11#include <signal.h> 9#include <signal.h>
12#include <sched.h> 10#include <sched.h>
13#include <endian.h> 11#if __linux
12#include <sys/syscall.h>
13#endif
14 14
15#include <pthread.h> 15#include <pthread.h>
16#include <sys/syscall.h>
17 16
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 17typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 18typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 19typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
21 20
… …
42 off_t offset; 41 off_t offset;
43 size_t length; 42 size_t length;
44 ssize_t result; 43 ssize_t result;
45 mode_t mode; /* open */ 44 mode_t mode; /* open */
46 int errorno; 45 int errorno;
47 SV *data, *callback; 46 SV *data, *callback, *fh;
48 void *dataptr; 47 void *dataptr;
49 STRLEN dataoffset; 48 STRLEN dataoffset;
50 49
51 Stat_t *statdata; 50 Stat_t *statdata;
52} aio_cb; 51} aio_cb;
53 52
54typedef aio_cb *aio_req; 53typedef aio_cb *aio_req;
55 54
56static int started; 55static int started;
57static int nreqs; 56static volatile int nreqs;
58static int max_outstanding = 1<<30; 57static int max_outstanding = 1<<30;
59static int respipe [2]; 58static int respipe [2];
60 59
61static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 60static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
62static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 61static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
… …
66static volatile aio_req ress, rese; /* queue start, queue end */ 65static volatile aio_req ress, rese; /* queue start, queue end */
67 66
68static void 67static void
69poll_wait () 68poll_wait ()
70{ 69{
71 if (!nreqs) 70 if (nreqs && !ress)
72 return; 71 {
73
74 fd_set rfd; 72 fd_set rfd;
75 FD_ZERO(&rfd); 73 FD_ZERO(&rfd);
76 FD_SET(respipe [0], &rfd); 74 FD_SET(respipe [0], &rfd);
77 75
78 select (respipe [0] + 1, &rfd, 0, 0, 0); 76 select (respipe [0] + 1, &rfd, 0, 0, 0);
77 }
79} 78}
80 79
81static int 80static int
82poll_cb (pTHX) 81poll_cb ()
83{ 82{
84 dSP; 83 dSP;
85 int count = 0; 84 int count = 0;
86 aio_req req; 85 aio_req req, prv;
87 86
87 pthread_mutex_lock (&reslock);
88
88 { 89 {
89 /* read and signals sent by the worker threads */ 90 /* read any signals sent by the worker threads */
90 char buf [32]; 91 char buf [32];
91 while (read (respipe [0], buf, 32) > 0) 92 while (read (respipe [0], buf, 32) > 0)
92 ; 93 ;
93 } 94 }
94 95
95 for (;;) 96 req = ress;
97 ress = rese = 0;
98
99 pthread_mutex_unlock (&reslock);
100
101 while (req)
96 { 102 {
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--; 103 nreqs--;
113 104
114 if (req->type == REQ_QUIT) 105 if (req->type == REQ_QUIT)
115 started--; 106 started--;
116 else 107 else
… …
123 + req->result > 0 ? req->result : 0); 114 + req->result > 0 ? req->result : 0);
124 115
125 if (req->data) 116 if (req->data)
126 SvREFCNT_dec (req->data); 117 SvREFCNT_dec (req->data);
127 118
119 if (req->fh)
120 SvREFCNT_dec (req->fh);
121
128 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) 122 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
129 { 123 {
130 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 124 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
131 PL_laststatval = req->result; 125 PL_laststatval = req->result;
132 PL_statcache = *(req->statdata); 126 PL_statcache = *(req->statdata);
133 127
134 Safefree (req->statdata); 128 Safefree (req->statdata);
135 } 129 }
136 130
131 ENTER;
137 PUSHMARK (SP); 132 PUSHMARK (SP);
138 XPUSHs (sv_2mortal (newSViv (req->result))); 133 XPUSHs (sv_2mortal (newSViv (req->result)));
139 134
140 if (req->type == REQ_OPEN) 135 if (req->type == REQ_OPEN)
141 { 136 {
… …
144 139
145 PUTBACK; 140 PUTBACK;
146 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 141 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
147 SPAGAIN; 142 SPAGAIN;
148 143
149 fh = POPs; 144 fh = SvREFCNT_inc (POPs);
150 145
151 PUSHMARK (SP); 146 PUSHMARK (SP);
152 XPUSHs (fh); 147 XPUSHs (sv_2mortal (fh));
153 } 148 }
154 149
150 if (SvOK (req->callback))
151 {
155 PUTBACK; 152 PUTBACK;
156 call_sv (req->callback, G_VOID | G_EVAL); 153 call_sv (req->callback, G_VOID | G_EVAL);
157 SPAGAIN; 154 SPAGAIN;
155 }
156
157 LEAVE;
158 158
159 if (req->callback) 159 if (req->callback)
160 SvREFCNT_dec (req->callback); 160 SvREFCNT_dec (req->callback);
161 161
162 errno = errorno; 162 errno = errorno;
163 count++; 163 count++;
164 } 164 }
165 165
166 prv = req;
167 req = req->next;
166 Safefree (req); 168 Safefree (prv);
169
170 /* TODO: croak on errors? */
167 } 171 }
168 172
169 return count; 173 return count;
170} 174}
171 175
… …
226 req->type = REQ_QUIT; 230 req->type = REQ_QUIT;
227 231
228 send_req (req); 232 send_req (req);
229} 233}
230 234
231static void
232read_write (pTHX_
233 int dowrite, int fd, off_t offset, size_t length,
234 SV *data, STRLEN dataoffset, SV *callback)
235{
236 aio_req req;
237 STRLEN svlen;
238 char *svptr = SvPV (data, svlen);
239
240 SvUPGRADE (data, SVt_PV);
241 SvPOK_on (data);
242
243 if (dataoffset < 0)
244 dataoffset += svlen;
245
246 if (dataoffset < 0 || dataoffset > svlen)
247 croak ("data offset outside of string");
248
249 if (dowrite)
250 {
251 /* write: check length and adjust. */
252 if (length < 0 || length + dataoffset > svlen)
253 length = svlen - dataoffset;
254 }
255 else
256 {
257 /* read: grow scalar as necessary */
258 svptr = SvGROW (data, length + dataoffset);
259 }
260
261 if (length < 0)
262 croak ("length must not be negative");
263
264 Newz (0, req, 1, aio_cb);
265
266 if (!req)
267 croak ("out of memory during aio_req allocation");
268
269 req->type = dowrite ? REQ_WRITE : REQ_READ;
270 req->fd = fd;
271 req->offset = offset;
272 req->length = length;
273 req->data = SvREFCNT_inc (data);
274 req->dataptr = (char *)svptr + dataoffset;
275 req->callback = SvREFCNT_inc (callback);
276
277 send_req (req);
278}
279
280static void * 235static void *
281aio_proc (void *thr_arg) 236aio_proc (void *thr_arg)
282{ 237{
283 aio_req req; 238 aio_req req;
284 int type; 239 int type;
… …
309 264
310 type = req->type; 265 type = req->type;
311 266
312 switch (type) 267 switch (type)
313 { 268 {
314 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; 269 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; 270 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
316#if SYS_readahead 271#if SYS_readahead
317 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 272 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
318#else 273#else
319 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; 274 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
320#endif 275#endif
… …
364 return 0; 319 return 0;
365} 320}
366 321
367MODULE = IO::AIO PACKAGE = IO::AIO 322MODULE = IO::AIO PACKAGE = IO::AIO
368 323
324PROTOTYPES: ENABLE
325
369BOOT: 326BOOT:
370{ 327{
371 if (pipe (respipe)) 328 if (pipe (respipe))
372 croak ("unable to initialize result pipe"); 329 croak ("unable to initialize result pipe");
373 330
… …
400 } 357 }
401 358
402 while (started > nthreads) 359 while (started > nthreads)
403 { 360 {
404 poll_wait (); 361 poll_wait ();
405 poll_cb (aTHX); 362 poll_cb ();
406 } 363 }
407} 364}
408 365
409int 366int
410max_outstanding(nreqs) 367max_outstanding(nreqs)
… …
413 CODE: 370 CODE:
414 RETVAL = max_outstanding; 371 RETVAL = max_outstanding;
415 max_outstanding = nreqs; 372 max_outstanding = nreqs;
416 373
417void 374void
418aio_open(pathname,flags,mode,callback) 375aio_open(pathname,flags,mode,callback=&PL_sv_undef)
419 SV * pathname 376 SV * pathname
420 int flags 377 int flags
421 int mode 378 int mode
422 SV * callback 379 SV * callback
423 PROTOTYPE: $$$$ 380 PROTOTYPE: $$$;$
424 CODE: 381 CODE:
425{ 382{
426 aio_req req; 383 aio_req req;
427 384
428 Newz (0, req, 1, aio_cb); 385 Newz (0, req, 1, aio_cb);
… …
439 396
440 send_req (req); 397 send_req (req);
441} 398}
442 399
443void 400void
444aio_close(fh,callback) 401aio_close(fh,callback=&PL_sv_undef)
445 InputStream fh 402 SV * fh
446 SV * callback 403 SV * callback
447 PROTOTYPE: $$ 404 PROTOTYPE: $;$
448 ALIAS: 405 ALIAS:
449 aio_close = REQ_CLOSE 406 aio_close = REQ_CLOSE
450 aio_fsync = REQ_FSYNC 407 aio_fsync = REQ_FSYNC
451 aio_fdatasync = REQ_FDATASYNC 408 aio_fdatasync = REQ_FDATASYNC
452 CODE: 409 CODE:
… …
457 414
458 if (!req) 415 if (!req)
459 croak ("out of memory during aio_req allocation"); 416 croak ("out of memory during aio_req allocation");
460 417
461 req->type = ix; 418 req->type = ix;
419 req->fh = newSVsv (fh);
462 req->fd = PerlIO_fileno (fh); 420 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
463 req->callback = SvREFCNT_inc (callback); 421 req->callback = SvREFCNT_inc (callback);
464 422
465 send_req (req); 423 send_req (req);
466} 424}
467 425
468void 426void
469aio_read(fh,offset,length,data,dataoffset,callback) 427aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
470 InputStream fh 428 SV * fh
471 UV offset 429 UV offset
472 IV length 430 IV length
473 SV * data 431 SV * data
474 IV dataoffset 432 IV dataoffset
475 SV * callback 433 SV * callback
434 ALIAS:
435 aio_read = REQ_READ
436 aio_write = REQ_WRITE
476 PROTOTYPE: $$$$$$ 437 PROTOTYPE: $$$$$;$
477 CODE: 438 CODE:
478 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
479
480void
481aio_write(fh,offset,length,data,dataoffset,callback)
482 OutputStream fh
483 UV offset
484 IV length
485 SV * data
486 IV dataoffset
487 SV * callback
488 PROTOTYPE: $$$$$$
489 CODE:
490 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
491
492void
493aio_readahead(fh,offset,length,callback)
494 InputStream fh
495 UV offset
496 IV length
497 SV * callback
498 PROTOTYPE: $$$$
499 CODE:
500{ 439{
501 aio_req req; 440 aio_req req;
441 STRLEN svlen;
442 char *svptr = SvPV (data, svlen);
443
444 SvUPGRADE (data, SVt_PV);
445 SvPOK_on (data);
446
447 if (dataoffset < 0)
448 dataoffset += svlen;
449
450 if (dataoffset < 0 || dataoffset > svlen)
451 croak ("data offset outside of string");
452
453 if (ix == REQ_WRITE)
454 {
455 /* write: check length and adjust. */
456 if (length < 0 || length + dataoffset > svlen)
457 length = svlen - dataoffset;
458 }
459 else
460 {
461 /* read: grow scalar as necessary */
462 svptr = SvGROW (data, length + dataoffset);
463 }
502 464
503 if (length < 0) 465 if (length < 0)
504 croak ("length must not be negative"); 466 croak ("length must not be negative");
505 467
506 Newz (0, req, 1, aio_cb); 468 Newz (0, req, 1, aio_cb);
507 469
508 if (!req) 470 if (!req)
509 croak ("out of memory during aio_req allocation"); 471 croak ("out of memory during aio_req allocation");
510 472
473 req->type = ix;
474 req->fh = newSVsv (fh);
475 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
476 : IoOFP (sv_2io (fh)));
477 req->offset = offset;
478 req->length = length;
479 req->data = SvREFCNT_inc (data);
480 req->dataptr = (char *)svptr + dataoffset;
481 req->callback = SvREFCNT_inc (callback);
482
483 send_req (req);
484}
485
486void
487aio_readahead(fh,offset,length,callback=&PL_sv_undef)
488 SV * fh
489 UV offset
490 IV length
491 SV * callback
492 PROTOTYPE: $$$;$
493 CODE:
494{
495 aio_req req;
496
497 if (length < 0)
498 croak ("length must not be negative");
499
500 Newz (0, req, 1, aio_cb);
501
502 if (!req)
503 croak ("out of memory during aio_req allocation");
504
511 req->type = REQ_READAHEAD; 505 req->type = REQ_READAHEAD;
506 req->fh = newSVsv (fh);
512 req->fd = PerlIO_fileno (fh); 507 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
513 req->offset = offset; 508 req->offset = offset;
514 req->length = length; 509 req->length = length;
515 req->callback = SvREFCNT_inc (callback); 510 req->callback = SvREFCNT_inc (callback);
516 511
517 send_req (req); 512 send_req (req);
518} 513}
519 514
520void 515void
521aio_stat(fh_or_path,callback) 516aio_stat(fh_or_path,callback=&PL_sv_undef)
522 SV * fh_or_path 517 SV * fh_or_path
523 SV * callback 518 SV * callback
524 PROTOTYPE: $$
525 ALIAS: 519 ALIAS:
520 aio_stat = REQ_STAT
526 aio_lstat = 1 521 aio_lstat = REQ_LSTAT
527 CODE: 522 CODE:
528{ 523{
529 aio_req req; 524 aio_req req;
530 525
531 Newz (0, req, 1, aio_cb); 526 Newz (0, req, 1, aio_cb);
… …
538 if (!req->statdata) 533 if (!req->statdata)
539 croak ("out of memory during aio_req->statdata allocation"); 534 croak ("out of memory during aio_req->statdata allocation");
540 535
541 if (SvPOK (fh_or_path)) 536 if (SvPOK (fh_or_path))
542 { 537 {
543 req->type = ix ? REQ_LSTAT : REQ_STAT; 538 req->type = ix;
544 req->data = newSVsv (fh_or_path); 539 req->data = newSVsv (fh_or_path);
545 req->dataptr = SvPV_nolen (req->data); 540 req->dataptr = SvPV_nolen (req->data);
546 } 541 }
547 else 542 else
548 { 543 {
549 req->type = REQ_FSTAT; 544 req->type = REQ_FSTAT;
545 req->fh = newSVsv (fh_or_path);
550 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 546 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
551 } 547 }
552 548
553 req->callback = SvREFCNT_inc (callback); 549 req->callback = SvREFCNT_inc (callback);
554 550
555 send_req (req); 551 send_req (req);
556} 552}
557 553
558void 554void
559aio_unlink(pathname,callback) 555aio_unlink(pathname,callback=&PL_sv_undef)
560 SV * pathname 556 SV * pathname
561 SV * callback 557 SV * callback
562 PROTOTYPE: $$
563 CODE: 558 CODE:
564{ 559{
565 aio_req req; 560 aio_req req;
566 561
567 Newz (0, req, 1, aio_cb); 562 Newz (0, req, 1, aio_cb);
… …
575 req->callback = SvREFCNT_inc (callback); 570 req->callback = SvREFCNT_inc (callback);
576 571
577 send_req (req); 572 send_req (req);
578} 573}
579 574
575void
576flush()
577 PROTOTYPE:
578 CODE:
579 while (nreqs)
580 {
581 poll_wait ();
582 poll_cb ();
583 }
584
585void
586poll()
587 PROTOTYPE:
588 CODE:
589 if (nreqs)
590 {
591 poll_wait ();
592 poll_cb ();
593 }
594
580int 595int
581poll_fileno() 596poll_fileno()
582 PROTOTYPE: 597 PROTOTYPE:
583 CODE: 598 CODE:
584 RETVAL = respipe [0]; 599 RETVAL = respipe [0];
… …
587 602
588int 603int
589poll_cb(...) 604poll_cb(...)
590 PROTOTYPE: 605 PROTOTYPE:
591 CODE: 606 CODE:
592 RETVAL = poll_cb (aTHX); 607 RETVAL = poll_cb ();
593 OUTPUT: 608 OUTPUT:
594 RETVAL 609 RETVAL
595 610
596void 611void
597poll_wait() 612poll_wait()

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