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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.3 by root, Sun Jul 10 20:07:11 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
22#if __i386 || __amd64
23# define STACKSIZE ( 256 * sizeof (long))
24#elif __ia64 24#if __ia64
25# define STACKSIZE (8192 * sizeof (long)) 25# define STACKSIZE 65536
26#else 26#else
27# define STACKSIZE ( 512 * sizeof (long)) 27# define STACKSIZE 4096
28#endif 28#endif
29 29
30enum { 30enum {
31 REQ_QUIT, 31 REQ_QUIT,
32 REQ_OPEN, REQ_CLOSE, 32 REQ_OPEN, REQ_CLOSE,
… …
54} aio_cb; 54} aio_cb;
55 55
56typedef aio_cb *aio_req; 56typedef aio_cb *aio_req;
57 57
58static int started; 58static int started;
59static int nreqs; 59static volatile int nreqs;
60static int max_outstanding = 1<<30;
60static int respipe [2]; 61static int respipe [2];
61 62
62static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 63static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
63static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 64static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
64static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 65static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
65 66
66static volatile aio_req reqs, reqe; /* queue start, queue end */ 67static volatile aio_req reqs, reqe; /* queue start, queue end */
67static volatile aio_req ress, rese; /* queue start, queue end */ 68static volatile aio_req ress, rese; /* queue start, queue end */
69
70static void
71poll_wait ()
72{
73 if (nreqs && !ress)
74 {
75 fd_set rfd;
76 FD_ZERO(&rfd);
77 FD_SET(respipe [0], &rfd);
78
79 select (respipe [0] + 1, &rfd, 0, 0, 0);
80 }
81}
82
83static int
84poll_cb ()
85{
86 dSP;
87 int count = 0;
88 aio_req req, prv;
89
90 static int rl;//D
91 //printf ("%d ENTER\n", ++rl);//D
92
93 pthread_mutex_lock (&reslock);
94
95 {
96 /* read any signals sent by the worker threads */
97 char buf [32];
98 while (read (respipe [0], buf, 32) > 0)
99 ;
100 }
101
102 req = ress;
103 ress = rese = 0;
104
105 pthread_mutex_unlock (&reslock);
106
107 while (req)
108 {
109 nreqs--;
110 //printf ("%d count %d %p->%p\n", rl, count, req, req->next);//D
111
112 if (req->type == REQ_QUIT)
113 started--;
114 else
115 {
116 int errorno = errno;
117 errno = req->errorno;
118
119 if (req->type == REQ_READ)
120 SvCUR_set (req->data, req->dataoffset
121 + req->result > 0 ? req->result : 0);
122
123 if (req->data)
124 SvREFCNT_dec (req->data);
125
126 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
127 {
128 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
129 PL_laststatval = req->result;
130 PL_statcache = *(req->statdata);
131
132 Safefree (req->statdata);
133 }
134
135 PUSHMARK (SP);
136 XPUSHs (sv_2mortal (newSViv (req->result)));
137
138 if (req->type == REQ_OPEN)
139 {
140 /* convert fd to fh */
141 SV *fh;
142
143 PUTBACK;
144 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
145 SPAGAIN;
146
147 fh = POPs;
148
149 PUSHMARK (SP);
150 XPUSHs (fh);
151 }
152
153 if (SvOK (req->callback))
154 {
155 PUTBACK;
156 call_sv (req->callback, G_VOID | G_EVAL);
157 SPAGAIN;
158 }
159
160 if (req->callback)
161 SvREFCNT_dec (req->callback);
162
163 errno = errorno;
164 count++;
165 }
166
167 prv = req;
168 req = req->next;
169 Safefree (prv);
170
171 /* TODO: croak on errors? */
172 }
173
174 //printf ("%d LEAVE %p %p\n", rl--, ress, rese);//D
175 return count;
176}
68 177
69static void *aio_proc(void *arg); 178static void *aio_proc(void *arg);
70 179
71static void 180static void
72start_thread (void) 181start_thread (void)
… …
105 else 214 else
106 reqe = reqs = req; 215 reqe = reqs = req;
107 216
108 pthread_cond_signal (&reqwait); 217 pthread_cond_signal (&reqwait);
109 pthread_mutex_unlock (&reqlock); 218 pthread_mutex_unlock (&reqlock);
219
220 while (nreqs > max_outstanding)
221 {
222 poll_wait ();
223 poll_cb ();
224 }
110} 225}
111 226
112static void 227static void
113end_thread (void) 228end_thread (void)
114{ 229{
… …
118 233
119 send_req (req); 234 send_req (req);
120} 235}
121 236
122static void 237static void
123read_write (pTHX_
124 int dowrite, int fd, off_t offset, size_t length, 238read_write (int dowrite, int fd, off_t offset, size_t length,
125 SV *data, STRLEN dataoffset, SV *callback) 239 SV *data, STRLEN dataoffset, SV *callback)
126{ 240{
127 aio_req req; 241 aio_req req;
128 STRLEN svlen; 242 STRLEN svlen;
129 char *svptr = SvPV (data, svlen); 243 char *svptr = SvPV (data, svlen);
… …
166 req->callback = SvREFCNT_inc (callback); 280 req->callback = SvREFCNT_inc (callback);
167 281
168 send_req (req); 282 send_req (req);
169} 283}
170 284
171static void
172poll_wait ()
173{
174 if (!nreqs)
175 return;
176
177 fd_set rfd;
178 FD_ZERO(&rfd);
179 FD_SET(respipe [0], &rfd);
180
181 select (respipe [0] + 1, &rfd, 0, 0, 0);
182}
183
184static int
185poll_cb (pTHX)
186{
187 dSP;
188 int count = 0;
189 aio_req req;
190
191 {
192 /* read and signals sent by the worker threads */
193 char buf [32];
194 while (read (respipe [0], buf, 32) > 0)
195 ;
196 }
197
198 for (;;)
199 {
200 pthread_mutex_lock (&reslock);
201
202 req = ress;
203
204 if (ress)
205 {
206 ress = ress->next;
207 if (!ress) rese = 0;
208 }
209
210 pthread_mutex_unlock (&reslock);
211
212 if (!req)
213 break;
214
215 nreqs--;
216
217 if (req->type == REQ_QUIT)
218 started--;
219 else
220 {
221 int errorno = errno;
222 errno = req->errorno;
223
224 if (req->type == REQ_READ)
225 SvCUR_set (req->data, req->dataoffset
226 + req->result > 0 ? req->result : 0);
227
228 if (req->data)
229 SvREFCNT_dec (req->data);
230
231 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
232 {
233 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
234 PL_laststatval = req->result;
235 PL_statcache = *(req->statdata);
236
237 Safefree (req->statdata);
238 }
239
240 PUSHMARK (SP);
241 XPUSHs (sv_2mortal (newSViv (req->result)));
242
243 if (req->type == REQ_OPEN)
244 {
245 /* convert fd to fh */
246 SV *fh;
247
248 PUTBACK;
249 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
250 SPAGAIN;
251
252 fh = POPs;
253
254 PUSHMARK (SP);
255 XPUSHs (fh);
256 }
257
258 PUTBACK;
259 call_sv (req->callback, G_VOID | G_EVAL);
260 SPAGAIN;
261
262 if (req->callback)
263 SvREFCNT_dec (req->callback);
264
265 errno = errorno;
266 count++;
267 }
268
269 Safefree (req);
270 }
271
272 return count;
273}
274
275static void * 285static void *
276aio_proc (void *thr_arg) 286aio_proc (void *thr_arg)
277{ 287{
278 aio_req req; 288 aio_req req;
279 int type; 289 int type;
… …
304 314
305 type = req->type; 315 type = req->type;
306 316
307 switch (type) 317 switch (type)
308 { 318 {
309 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;
310 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;
311#if SYS_readahead 321#if SYS_readahead
312 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;
313#else 323#else
314 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; 324 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
315#endif 325#endif
… …
359 return 0; 369 return 0;
360} 370}
361 371
362MODULE = IO::AIO PACKAGE = IO::AIO 372MODULE = IO::AIO PACKAGE = IO::AIO
363 373
374PROTOTYPES: ENABLE
375
364BOOT: 376BOOT:
365{ 377{
366 if (pipe (respipe)) 378 if (pipe (respipe))
367 croak ("unable to initialize result pipe"); 379 croak ("unable to initialize result pipe");
368 380
… …
395 } 407 }
396 408
397 while (started > nthreads) 409 while (started > nthreads)
398 { 410 {
399 poll_wait (); 411 poll_wait ();
400 poll_cb (aTHX); 412 poll_cb ();
401 } 413 }
402} 414}
403 415
416int
417max_outstanding(nreqs)
418 int nreqs
419 PROTOTYPE: $
420 CODE:
421 RETVAL = max_outstanding;
422 max_outstanding = nreqs;
423
404void 424void
405aio_open(pathname,flags,mode,callback) 425aio_open(pathname,flags,mode,callback=&PL_sv_undef)
406 SV * pathname 426 SV * pathname
407 int flags 427 int flags
408 int mode 428 int mode
409 SV * callback 429 SV * callback
410 PROTOTYPE: $$$$ 430 PROTOTYPE: $$$;$
411 CODE: 431 CODE:
412{ 432{
413 aio_req req; 433 aio_req req;
414 434
415 Newz (0, req, 1, aio_cb); 435 Newz (0, req, 1, aio_cb);
… …
426 446
427 send_req (req); 447 send_req (req);
428} 448}
429 449
430void 450void
431aio_close(fh,callback) 451aio_close(fh,callback=&PL_sv_undef)
432 InputStream fh 452 InputStream fh
433 SV * callback 453 SV * callback
434 PROTOTYPE: $$ 454 PROTOTYPE: $;$
435 ALIAS: 455 ALIAS:
436 aio_close = REQ_CLOSE 456 aio_close = REQ_CLOSE
437 aio_fsync = REQ_FSYNC 457 aio_fsync = REQ_FSYNC
438 aio_fdatasync = REQ_FDATASYNC 458 aio_fdatasync = REQ_FDATASYNC
439 CODE: 459 CODE:
… …
451 471
452 send_req (req); 472 send_req (req);
453} 473}
454 474
455void 475void
456aio_read(fh,offset,length,data,dataoffset,callback) 476aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
457 InputStream fh 477 InputStream fh
458 UV offset 478 UV offset
459 IV length 479 IV length
460 SV * data 480 SV * data
461 IV dataoffset 481 IV dataoffset
462 SV * callback 482 SV * callback
463 PROTOTYPE: $$$$$$ 483 PROTOTYPE: $$$$$;$
464 CODE: 484 CODE:
465 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 485 read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466 486
467void 487void
468aio_write(fh,offset,length,data,dataoffset,callback) 488aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
469 OutputStream fh 489 OutputStream fh
470 UV offset 490 UV offset
471 IV length 491 IV length
472 SV * data 492 SV * data
473 IV dataoffset 493 IV dataoffset
474 SV * callback 494 SV * callback
475 PROTOTYPE: $$$$$$ 495 PROTOTYPE: $$$$$;$
476 CODE: 496 CODE:
477 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 497 read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478 498
479void 499void
480aio_readahead(fh,offset,length,callback) 500aio_readahead(fh,offset,length,callback=&PL_sv_undef)
481 InputStream fh 501 InputStream fh
482 UV offset 502 UV offset
483 IV length 503 IV length
484 SV * callback 504 SV * callback
485 PROTOTYPE: $$$$ 505 PROTOTYPE: $$$;$
486 CODE: 506 CODE:
487{ 507{
488 aio_req req; 508 aio_req req;
489 509
490 if (length < 0) 510 if (length < 0)
… …
503 523
504 send_req (req); 524 send_req (req);
505} 525}
506 526
507void 527void
508aio_stat(fh_or_path,callback) 528aio_stat(fh_or_path,callback=&PL_sv_undef)
509 SV * fh_or_path 529 SV * fh_or_path
510 SV * callback 530 SV * callback
511 PROTOTYPE: $$
512 ALIAS: 531 ALIAS:
532 aio_stat = REQ_STAT
513 aio_lstat = 1 533 aio_lstat = REQ_LSTAT
514 CODE: 534 CODE:
515{ 535{
516 aio_req req; 536 aio_req req;
517 537
518 Newz (0, req, 1, aio_cb); 538 Newz (0, req, 1, aio_cb);
… …
525 if (!req->statdata) 545 if (!req->statdata)
526 croak ("out of memory during aio_req->statdata allocation"); 546 croak ("out of memory during aio_req->statdata allocation");
527 547
528 if (SvPOK (fh_or_path)) 548 if (SvPOK (fh_or_path))
529 { 549 {
530 req->type = ix ? REQ_LSTAT : REQ_STAT; 550 req->type = ix;
531 req->data = newSVsv (fh_or_path); 551 req->data = newSVsv (fh_or_path);
532 req->dataptr = SvPV_nolen (req->data); 552 req->dataptr = SvPV_nolen (req->data);
533 } 553 }
534 else 554 else
535 { 555 {
… …
541 561
542 send_req (req); 562 send_req (req);
543} 563}
544 564
545void 565void
546aio_unlink(pathname,callback) 566aio_unlink(pathname,callback=&PL_sv_undef)
547 SV * pathname 567 SV * pathname
548 SV * callback 568 SV * callback
549 PROTOTYPE: $$
550 CODE: 569 CODE:
551{ 570{
552 aio_req req; 571 aio_req req;
553 572
554 Newz (0, req, 1, aio_cb); 573 Newz (0, req, 1, aio_cb);
… …
562 req->callback = SvREFCNT_inc (callback); 581 req->callback = SvREFCNT_inc (callback);
563 582
564 send_req (req); 583 send_req (req);
565} 584}
566 585
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
567int 606int
568poll_fileno() 607poll_fileno()
569 PROTOTYPE: 608 PROTOTYPE:
570 CODE: 609 CODE:
571 RETVAL = respipe [0]; 610 RETVAL = respipe [0];
… …
574 613
575int 614int
576poll_cb(...) 615poll_cb(...)
577 PROTOTYPE: 616 PROTOTYPE:
578 CODE: 617 CODE:
579 RETVAL = poll_cb (aTHX); 618 RETVAL = poll_cb ();
580 OUTPUT: 619 OUTPUT:
581 RETVAL 620 RETVAL
582 621
583void 622void
584poll_wait() 623poll_wait()

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