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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 1.10 by root, Wed Jul 13 00:13:09 2005 UTC

1#define PERL_NO_GET_CONTEXT
2
3#include "EXTERN.h" 1#include "EXTERN.h"
4#include "perl.h" 2#include "perl.h"
5#include "XSUB.h" 3#include "XSUB.h"
6 4
5#define _XOPEN_SOURCE 500
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,
… …
55 55
56typedef aio_cb *aio_req; 56typedef aio_cb *aio_req;
57 57
58static int started; 58static int started;
59static int nreqs; 59static 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)
74 return;
75
76 fd_set rfd;
77 FD_ZERO(&rfd);
78 FD_SET(respipe [0], &rfd);
79
80 select (respipe [0] + 1, &rfd, 0, 0, 0);
81}
82
83static int
84poll_cb ()
85{
86 dSP;
87 int count = 0;
88 aio_req req;
89
90 {
91 /* read and signals sent by the worker threads */
92 char buf [32];
93 while (read (respipe [0], buf, 32) > 0)
94 ;
95 }
96
97 for (;;)
98 {
99 pthread_mutex_lock (&reslock);
100
101 req = ress;
102
103 if (ress)
104 {
105 ress = ress->next;
106 if (!ress) rese = 0;
107 }
108
109 pthread_mutex_unlock (&reslock);
110
111 if (!req)
112 break;
113
114 nreqs--;
115
116 if (req->type == REQ_QUIT)
117 started--;
118 else
119 {
120 int errorno = errno;
121 errno = req->errorno;
122
123 if (req->type == REQ_READ)
124 SvCUR_set (req->data, req->dataoffset
125 + req->result > 0 ? req->result : 0);
126
127 if (req->data)
128 SvREFCNT_dec (req->data);
129
130 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
131 {
132 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
133 PL_laststatval = req->result;
134 PL_statcache = *(req->statdata);
135
136 Safefree (req->statdata);
137 }
138
139 PUSHMARK (SP);
140 XPUSHs (sv_2mortal (newSViv (req->result)));
141
142 if (req->type == REQ_OPEN)
143 {
144 /* convert fd to fh */
145 SV *fh;
146
147 PUTBACK;
148 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
149 SPAGAIN;
150
151 fh = POPs;
152
153 PUSHMARK (SP);
154 XPUSHs (fh);
155 }
156
157 if (SvOK (req->callback))
158 {
159 PUTBACK;
160 call_sv (req->callback, G_VOID | G_EVAL);
161 SPAGAIN;
162 }
163
164 if (req->callback)
165 SvREFCNT_dec (req->callback);
166
167 errno = errorno;
168 count++;
169 }
170
171 Safefree (req);
172 }
173
174 return count;
175}
68 176
69static void *aio_proc(void *arg); 177static void *aio_proc(void *arg);
70 178
71static void 179static void
72start_thread (void) 180start_thread (void)
… …
105 else 213 else
106 reqe = reqs = req; 214 reqe = reqs = req;
107 215
108 pthread_cond_signal (&reqwait); 216 pthread_cond_signal (&reqwait);
109 pthread_mutex_unlock (&reqlock); 217 pthread_mutex_unlock (&reqlock);
218
219 while (nreqs > max_outstanding)
220 {
221 poll_wait ();
222 poll_cb ();
223 }
110} 224}
111 225
112static void 226static void
113end_thread (void) 227end_thread (void)
114{ 228{
… …
118 232
119 send_req (req); 233 send_req (req);
120} 234}
121 235
122static void 236static void
123read_write (pTHX_
124 int dowrite, int fd, off_t offset, size_t length, 237read_write (int dowrite, int fd, off_t offset, size_t length,
125 SV *data, STRLEN dataoffset, SV *callback) 238 SV *data, STRLEN dataoffset, SV *callback)
126{ 239{
127 aio_req req; 240 aio_req req;
128 STRLEN svlen; 241 STRLEN svlen;
129 char *svptr = SvPV (data, svlen); 242 char *svptr = SvPV (data, svlen);
… …
166 req->callback = SvREFCNT_inc (callback); 279 req->callback = SvREFCNT_inc (callback);
167 280
168 send_req (req); 281 send_req (req);
169} 282}
170 283
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 * 284static void *
276aio_proc (void *thr_arg) 285aio_proc (void *thr_arg)
277{ 286{
278 aio_req req; 287 aio_req req;
279 int type; 288 int type;
… …
304 313
305 type = req->type; 314 type = req->type;
306 315
307 switch (type) 316 switch (type)
308 { 317 {
309 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; 318 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; 319 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
311#if SYS_readahead 320#if SYS_readahead
312 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 321 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
313#else 322#else
314 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; 323 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
315#endif 324#endif
… …
359 return 0; 368 return 0;
360} 369}
361 370
362MODULE = IO::AIO PACKAGE = IO::AIO 371MODULE = IO::AIO PACKAGE = IO::AIO
363 372
373PROTOTYPES: ENABLE
374
364BOOT: 375BOOT:
365{ 376{
366 if (pipe (respipe)) 377 if (pipe (respipe))
367 croak ("unable to initialize result pipe"); 378 croak ("unable to initialize result pipe");
368 379
… …
395 } 406 }
396 407
397 while (started > nthreads) 408 while (started > nthreads)
398 { 409 {
399 poll_wait (); 410 poll_wait ();
400 poll_cb (aTHX); 411 poll_cb ();
401 } 412 }
402} 413}
403 414
415int
416max_outstanding(nreqs)
417 int nreqs
418 PROTOTYPE: $
419 CODE:
420 RETVAL = max_outstanding;
421 max_outstanding = nreqs;
422
404void 423void
405aio_open(pathname,flags,mode,callback) 424aio_open(pathname,flags,mode,callback=&PL_sv_undef)
406 SV * pathname 425 SV * pathname
407 int flags 426 int flags
408 int mode 427 int mode
409 SV * callback 428 SV * callback
410 PROTOTYPE: $$$$ 429 PROTOTYPE: $$$;$
411 CODE: 430 CODE:
412{ 431{
413 aio_req req; 432 aio_req req;
414 433
415 Newz (0, req, 1, aio_cb); 434 Newz (0, req, 1, aio_cb);
… …
426 445
427 send_req (req); 446 send_req (req);
428} 447}
429 448
430void 449void
431aio_close(fh,callback) 450aio_close(fh,callback=&PL_sv_undef)
432 InputStream fh 451 InputStream fh
433 SV * callback 452 SV * callback
434 PROTOTYPE: $$ 453 PROTOTYPE: $;$
435 ALIAS: 454 ALIAS:
436 aio_close = REQ_CLOSE 455 aio_close = REQ_CLOSE
437 aio_fsync = REQ_FSYNC 456 aio_fsync = REQ_FSYNC
438 aio_fdatasync = REQ_FDATASYNC 457 aio_fdatasync = REQ_FDATASYNC
439 CODE: 458 CODE:
… …
451 470
452 send_req (req); 471 send_req (req);
453} 472}
454 473
455void 474void
456aio_read(fh,offset,length,data,dataoffset,callback) 475aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
457 InputStream fh 476 InputStream fh
458 UV offset 477 UV offset
459 IV length 478 IV length
460 SV * data 479 SV * data
461 IV dataoffset 480 IV dataoffset
462 SV * callback 481 SV * callback
463 PROTOTYPE: $$$$$$ 482 PROTOTYPE: $$$$$;$
464 CODE: 483 CODE:
465 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 484 read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466 485
467void 486void
468aio_write(fh,offset,length,data,dataoffset,callback) 487aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
469 OutputStream fh 488 OutputStream fh
470 UV offset 489 UV offset
471 IV length 490 IV length
472 SV * data 491 SV * data
473 IV dataoffset 492 IV dataoffset
474 SV * callback 493 SV * callback
475 PROTOTYPE: $$$$$$ 494 PROTOTYPE: $$$$$;$
476 CODE: 495 CODE:
477 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 496 read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478 497
479void 498void
480aio_readahead(fh,offset,length,callback) 499aio_readahead(fh,offset,length,callback=&PL_sv_undef)
481 InputStream fh 500 InputStream fh
482 UV offset 501 UV offset
483 IV length 502 IV length
484 SV * callback 503 SV * callback
485 PROTOTYPE: $$$$ 504 PROTOTYPE: $$$;$
486 CODE: 505 CODE:
487{ 506{
488 aio_req req; 507 aio_req req;
489 508
490 if (length < 0) 509 if (length < 0)
… …
503 522
504 send_req (req); 523 send_req (req);
505} 524}
506 525
507void 526void
508aio_stat(fh_or_path,callback) 527aio_stat(fh_or_path,callback=&PL_sv_undef)
509 SV * fh_or_path 528 SV * fh_or_path
510 SV * callback 529 SV * callback
511 PROTOTYPE: $$
512 ALIAS: 530 ALIAS:
531 aio_stat = REQ_STAT
513 aio_lstat = 1 532 aio_lstat = REQ_LSTAT
514 CODE: 533 CODE:
515{ 534{
516 aio_req req; 535 aio_req req;
517 536
518 Newz (0, req, 1, aio_cb); 537 Newz (0, req, 1, aio_cb);
… …
525 if (!req->statdata) 544 if (!req->statdata)
526 croak ("out of memory during aio_req->statdata allocation"); 545 croak ("out of memory during aio_req->statdata allocation");
527 546
528 if (SvPOK (fh_or_path)) 547 if (SvPOK (fh_or_path))
529 { 548 {
530 req->type = ix ? REQ_LSTAT : REQ_STAT; 549 req->type = ix;
531 req->data = newSVsv (fh_or_path); 550 req->data = newSVsv (fh_or_path);
532 req->dataptr = SvPV_nolen (req->data); 551 req->dataptr = SvPV_nolen (req->data);
533 } 552 }
534 else 553 else
535 { 554 {
… …
541 560
542 send_req (req); 561 send_req (req);
543} 562}
544 563
545void 564void
546aio_unlink(pathname,callback) 565aio_unlink(pathname,callback=&PL_sv_undef)
547 SV * pathname 566 SV * pathname
548 SV * callback 567 SV * callback
549 PROTOTYPE: $$
550 CODE: 568 CODE:
551{ 569{
552 aio_req req; 570 aio_req req;
553 571
554 Newz (0, req, 1, aio_cb); 572 Newz (0, req, 1, aio_cb);
… …
562 req->callback = SvREFCNT_inc (callback); 580 req->callback = SvREFCNT_inc (callback);
563 581
564 send_req (req); 582 send_req (req);
565} 583}
566 584
585void
586flush()
587 PROTOTYPE:
588 CODE:
589 while (nreqs)
590 {
591 poll_wait ();
592 poll_cb ();
593 }
594
595void
596poll()
597 PROTOTYPE:
598 CODE:
599 if (nreqs)
600 {
601 poll_wait ();
602 poll_cb ();
603 }
604
567int 605int
568poll_fileno() 606poll_fileno()
569 PROTOTYPE: 607 PROTOTYPE:
570 CODE: 608 CODE:
571 RETVAL = respipe [0]; 609 RETVAL = respipe [0];
… …
574 612
575int 613int
576poll_cb(...) 614poll_cb(...)
577 PROTOTYPE: 615 PROTOTYPE:
578 CODE: 616 CODE:
579 RETVAL = poll_cb (aTHX); 617 RETVAL = poll_cb ();
580 OUTPUT: 618 OUTPUT:
581 RETVAL 619 RETVAL
582 620
583void 621void
584poll_wait() 622poll_wait()

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