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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 1.12 by root, Wed Jul 20 21:57:04 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 pthread_mutex_lock (&reslock);
91
92 {
93 /* read any signals sent by the worker threads */
94 char buf [32];
95 while (read (respipe [0], buf, 32) > 0)
96 ;
97 }
98
99 req = ress;
100 ress = rese = 0;
101
102 pthread_mutex_unlock (&reslock);
103
104 while (req)
105 {
106 nreqs--;
107
108 if (req->type == REQ_QUIT)
109 started--;
110 else
111 {
112 int errorno = errno;
113 errno = req->errorno;
114
115 if (req->type == REQ_READ)
116 SvCUR_set (req->data, req->dataoffset
117 + req->result > 0 ? req->result : 0);
118
119 if (req->data)
120 SvREFCNT_dec (req->data);
121
122 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
123 {
124 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
125 PL_laststatval = req->result;
126 PL_statcache = *(req->statdata);
127
128 Safefree (req->statdata);
129 }
130
131 PUSHMARK (SP);
132 XPUSHs (sv_2mortal (newSViv (req->result)));
133
134 if (req->type == REQ_OPEN)
135 {
136 /* convert fd to fh */
137 SV *fh;
138
139 PUTBACK;
140 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
141 SPAGAIN;
142
143 fh = POPs;
144
145 PUSHMARK (SP);
146 XPUSHs (fh);
147 }
148
149 if (SvOK (req->callback))
150 {
151 PUTBACK;
152 call_sv (req->callback, G_VOID | G_EVAL);
153 SPAGAIN;
154 }
155
156 if (req->callback)
157 SvREFCNT_dec (req->callback);
158
159 errno = errorno;
160 count++;
161 }
162
163 prv = req;
164 req = req->next;
165 Safefree (prv);
166
167 /* TODO: croak on errors? */
168 }
169
170 return count;
171}
68 172
69static void *aio_proc(void *arg); 173static void *aio_proc(void *arg);
70 174
71static void 175static void
72start_thread (void) 176start_thread (void)
… …
105 else 209 else
106 reqe = reqs = req; 210 reqe = reqs = req;
107 211
108 pthread_cond_signal (&reqwait); 212 pthread_cond_signal (&reqwait);
109 pthread_mutex_unlock (&reqlock); 213 pthread_mutex_unlock (&reqlock);
214
215 while (nreqs > max_outstanding)
216 {
217 poll_wait ();
218 poll_cb ();
219 }
110} 220}
111 221
112static void 222static void
113end_thread (void) 223end_thread (void)
114{ 224{
… …
118 228
119 send_req (req); 229 send_req (req);
120} 230}
121 231
122static void 232static void
123read_write (pTHX_
124 int dowrite, int fd, off_t offset, size_t length, 233read_write (int dowrite, int fd, off_t offset, size_t length,
125 SV *data, STRLEN dataoffset, SV *callback) 234 SV *data, STRLEN dataoffset, SV *callback)
126{ 235{
127 aio_req req; 236 aio_req req;
128 STRLEN svlen; 237 STRLEN svlen;
129 char *svptr = SvPV (data, svlen); 238 char *svptr = SvPV (data, svlen);
… …
166 req->callback = SvREFCNT_inc (callback); 275 req->callback = SvREFCNT_inc (callback);
167 276
168 send_req (req); 277 send_req (req);
169} 278}
170 279
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 * 280static void *
276aio_proc (void *thr_arg) 281aio_proc (void *thr_arg)
277{ 282{
278 aio_req req; 283 aio_req req;
279 int type; 284 int type;
… …
304 309
305 type = req->type; 310 type = req->type;
306 311
307 switch (type) 312 switch (type)
308 { 313 {
309 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; 314 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; 315 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
311#if SYS_readahead 316#if SYS_readahead
312 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 317 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
313#else 318#else
314 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; 319 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
315#endif 320#endif
… …
359 return 0; 364 return 0;
360} 365}
361 366
362MODULE = IO::AIO PACKAGE = IO::AIO 367MODULE = IO::AIO PACKAGE = IO::AIO
363 368
369PROTOTYPES: ENABLE
370
364BOOT: 371BOOT:
365{ 372{
366 if (pipe (respipe)) 373 if (pipe (respipe))
367 croak ("unable to initialize result pipe"); 374 croak ("unable to initialize result pipe");
368 375
… …
395 } 402 }
396 403
397 while (started > nthreads) 404 while (started > nthreads)
398 { 405 {
399 poll_wait (); 406 poll_wait ();
400 poll_cb (aTHX); 407 poll_cb ();
401 } 408 }
402} 409}
403 410
411int
412max_outstanding(nreqs)
413 int nreqs
414 PROTOTYPE: $
415 CODE:
416 RETVAL = max_outstanding;
417 max_outstanding = nreqs;
418
404void 419void
405aio_open(pathname,flags,mode,callback) 420aio_open(pathname,flags,mode,callback=&PL_sv_undef)
406 SV * pathname 421 SV * pathname
407 int flags 422 int flags
408 int mode 423 int mode
409 SV * callback 424 SV * callback
410 PROTOTYPE: $$$$ 425 PROTOTYPE: $$$;$
411 CODE: 426 CODE:
412{ 427{
413 aio_req req; 428 aio_req req;
414 429
415 Newz (0, req, 1, aio_cb); 430 Newz (0, req, 1, aio_cb);
… …
426 441
427 send_req (req); 442 send_req (req);
428} 443}
429 444
430void 445void
431aio_close(fh,callback) 446aio_close(fh,callback=&PL_sv_undef)
432 InputStream fh 447 InputStream fh
433 SV * callback 448 SV * callback
434 PROTOTYPE: $$ 449 PROTOTYPE: $;$
435 ALIAS: 450 ALIAS:
436 aio_close = REQ_CLOSE 451 aio_close = REQ_CLOSE
437 aio_fsync = REQ_FSYNC 452 aio_fsync = REQ_FSYNC
438 aio_fdatasync = REQ_FDATASYNC 453 aio_fdatasync = REQ_FDATASYNC
439 CODE: 454 CODE:
… …
451 466
452 send_req (req); 467 send_req (req);
453} 468}
454 469
455void 470void
456aio_read(fh,offset,length,data,dataoffset,callback) 471aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
457 InputStream fh 472 InputStream fh
458 UV offset 473 UV offset
459 IV length 474 IV length
460 SV * data 475 SV * data
461 IV dataoffset 476 IV dataoffset
462 SV * callback 477 SV * callback
463 PROTOTYPE: $$$$$$ 478 PROTOTYPE: $$$$$;$
464 CODE: 479 CODE:
465 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 480 read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466 481
467void 482void
468aio_write(fh,offset,length,data,dataoffset,callback) 483aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
469 OutputStream fh 484 OutputStream fh
470 UV offset 485 UV offset
471 IV length 486 IV length
472 SV * data 487 SV * data
473 IV dataoffset 488 IV dataoffset
474 SV * callback 489 SV * callback
475 PROTOTYPE: $$$$$$ 490 PROTOTYPE: $$$$$;$
476 CODE: 491 CODE:
477 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 492 read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478 493
479void 494void
480aio_readahead(fh,offset,length,callback) 495aio_readahead(fh,offset,length,callback=&PL_sv_undef)
481 InputStream fh 496 InputStream fh
482 UV offset 497 UV offset
483 IV length 498 IV length
484 SV * callback 499 SV * callback
485 PROTOTYPE: $$$$ 500 PROTOTYPE: $$$;$
486 CODE: 501 CODE:
487{ 502{
488 aio_req req; 503 aio_req req;
489 504
490 if (length < 0) 505 if (length < 0)
… …
503 518
504 send_req (req); 519 send_req (req);
505} 520}
506 521
507void 522void
508aio_stat(fh_or_path,callback) 523aio_stat(fh_or_path,callback=&PL_sv_undef)
509 SV * fh_or_path 524 SV * fh_or_path
510 SV * callback 525 SV * callback
511 PROTOTYPE: $$
512 ALIAS: 526 ALIAS:
527 aio_stat = REQ_STAT
513 aio_lstat = 1 528 aio_lstat = REQ_LSTAT
514 CODE: 529 CODE:
515{ 530{
516 aio_req req; 531 aio_req req;
517 532
518 Newz (0, req, 1, aio_cb); 533 Newz (0, req, 1, aio_cb);
… …
525 if (!req->statdata) 540 if (!req->statdata)
526 croak ("out of memory during aio_req->statdata allocation"); 541 croak ("out of memory during aio_req->statdata allocation");
527 542
528 if (SvPOK (fh_or_path)) 543 if (SvPOK (fh_or_path))
529 { 544 {
530 req->type = ix ? REQ_LSTAT : REQ_STAT; 545 req->type = ix;
531 req->data = newSVsv (fh_or_path); 546 req->data = newSVsv (fh_or_path);
532 req->dataptr = SvPV_nolen (req->data); 547 req->dataptr = SvPV_nolen (req->data);
533 } 548 }
534 else 549 else
535 { 550 {
… …
541 556
542 send_req (req); 557 send_req (req);
543} 558}
544 559
545void 560void
546aio_unlink(pathname,callback) 561aio_unlink(pathname,callback=&PL_sv_undef)
547 SV * pathname 562 SV * pathname
548 SV * callback 563 SV * callback
549 PROTOTYPE: $$
550 CODE: 564 CODE:
551{ 565{
552 aio_req req; 566 aio_req req;
553 567
554 Newz (0, req, 1, aio_cb); 568 Newz (0, req, 1, aio_cb);
… …
562 req->callback = SvREFCNT_inc (callback); 576 req->callback = SvREFCNT_inc (callback);
563 577
564 send_req (req); 578 send_req (req);
565} 579}
566 580
581void
582flush()
583 PROTOTYPE:
584 CODE:
585 while (nreqs)
586 {
587 poll_wait ();
588 poll_cb ();
589 }
590
591void
592poll()
593 PROTOTYPE:
594 CODE:
595 if (nreqs)
596 {
597 poll_wait ();
598 poll_cb ();
599 }
600
567int 601int
568poll_fileno() 602poll_fileno()
569 PROTOTYPE: 603 PROTOTYPE:
570 CODE: 604 CODE:
571 RETVAL = respipe [0]; 605 RETVAL = respipe [0];
… …
574 608
575int 609int
576poll_cb(...) 610poll_cb(...)
577 PROTOTYPE: 611 PROTOTYPE:
578 CODE: 612 CODE:
579 RETVAL = poll_cb (aTHX); 613 RETVAL = poll_cb ();
580 OUTPUT: 614 OUTPUT:
581 RETVAL 615 RETVAL
582 616
583void 617void
584poll_wait() 618poll_wait()

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