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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 1.14 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
22#if __i386 || __amd64
23# define STACKSIZE ( 256 * sizeof (long))
24#elif __ia64 21#if __ia64
25# define STACKSIZE (8192 * sizeof (long)) 22# define STACKSIZE 65536
26#else 23#else
27# define STACKSIZE ( 512 * sizeof (long)) 24# define STACKSIZE 4096
28#endif 25#endif
29 26
30enum { 27enum {
31 REQ_QUIT, 28 REQ_QUIT,
32 REQ_OPEN, REQ_CLOSE, 29 REQ_OPEN, REQ_CLOSE,
… …
44 off_t offset; 41 off_t offset;
45 size_t length; 42 size_t length;
46 ssize_t result; 43 ssize_t result;
47 mode_t mode; /* open */ 44 mode_t mode; /* open */
48 int errorno; 45 int errorno;
49 SV *data, *callback; 46 SV *data, *callback, *fh;
50 void *dataptr; 47 void *dataptr;
51 STRLEN dataoffset; 48 STRLEN dataoffset;
52 49
53 Stat_t *statdata; 50 Stat_t *statdata;
54} aio_cb; 51} aio_cb;
55 52
56typedef aio_cb *aio_req; 53typedef aio_cb *aio_req;
57 54
58static int started; 55static int started;
59static int nreqs; 56static volatile int nreqs;
57static int max_outstanding = 1<<30;
60static int respipe [2]; 58static int respipe [2];
61 59
62static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 60static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
63static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 61static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
64static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 62static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
65 63
66static volatile aio_req reqs, reqe; /* queue start, queue end */ 64static volatile aio_req reqs, reqe; /* queue start, queue end */
67static volatile aio_req ress, rese; /* queue start, queue end */ 65static volatile aio_req ress, rese; /* queue start, queue end */
66
67static void
68poll_wait ()
69{
70 if (nreqs && !ress)
71 {
72 fd_set rfd;
73 FD_ZERO(&rfd);
74 FD_SET(respipe [0], &rfd);
75
76 select (respipe [0] + 1, &rfd, 0, 0, 0);
77 }
78}
79
80static int
81poll_cb ()
82{
83 dSP;
84 int count = 0;
85 aio_req req, prv;
86
87 pthread_mutex_lock (&reslock);
88
89 {
90 /* read any signals sent by the worker threads */
91 char buf [32];
92 while (read (respipe [0], buf, 32) > 0)
93 ;
94 }
95
96 req = ress;
97 ress = rese = 0;
98
99 pthread_mutex_unlock (&reslock);
100
101 while (req)
102 {
103 nreqs--;
104
105 if (req->type == REQ_QUIT)
106 started--;
107 else
108 {
109 int errorno = errno;
110 errno = req->errorno;
111
112 if (req->type == REQ_READ)
113 SvCUR_set (req->data, req->dataoffset
114 + req->result > 0 ? req->result : 0);
115
116 if (req->data)
117 SvREFCNT_dec (req->data);
118
119 if (req->fh)
120 SvREFCNT_dec (req->fh);
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 ENTER;
132 PUSHMARK (SP);
133 XPUSHs (sv_2mortal (newSViv (req->result)));
134
135 if (req->type == REQ_OPEN)
136 {
137 /* convert fd to fh */
138 SV *fh;
139
140 PUTBACK;
141 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
142 SPAGAIN;
143
144 fh = SvREFCNT_inc (POPs);
145
146 PUSHMARK (SP);
147 XPUSHs (sv_2mortal (fh));
148 }
149
150 if (SvOK (req->callback))
151 {
152 PUTBACK;
153 call_sv (req->callback, G_VOID | G_EVAL);
154 SPAGAIN;
155 }
156
157 LEAVE;
158
159 if (req->callback)
160 SvREFCNT_dec (req->callback);
161
162 errno = errorno;
163 count++;
164 }
165
166 prv = req;
167 req = req->next;
168 Safefree (prv);
169
170 /* TODO: croak on errors? */
171 }
172
173 return count;
174}
68 175
69static void *aio_proc(void *arg); 176static void *aio_proc(void *arg);
70 177
71static void 178static void
72start_thread (void) 179start_thread (void)
… …
105 else 212 else
106 reqe = reqs = req; 213 reqe = reqs = req;
107 214
108 pthread_cond_signal (&reqwait); 215 pthread_cond_signal (&reqwait);
109 pthread_mutex_unlock (&reqlock); 216 pthread_mutex_unlock (&reqlock);
217
218 while (nreqs > max_outstanding)
219 {
220 poll_wait ();
221 poll_cb ();
222 }
110} 223}
111 224
112static void 225static void
113end_thread (void) 226end_thread (void)
114{ 227{
115 aio_req req; 228 aio_req req;
116 New (0, req, 1, aio_cb); 229 New (0, req, 1, aio_cb);
117 req->type = REQ_QUIT; 230 req->type = REQ_QUIT;
118 231
119 send_req (req); 232 send_req (req);
120}
121
122static void
123read_write (pTHX_
124 int dowrite, int fd, off_t offset, size_t length,
125 SV *data, STRLEN dataoffset, SV *callback)
126{
127 aio_req req;
128 STRLEN svlen;
129 char *svptr = SvPV (data, svlen);
130
131 SvUPGRADE (data, SVt_PV);
132 SvPOK_on (data);
133
134 if (dataoffset < 0)
135 dataoffset += svlen;
136
137 if (dataoffset < 0 || dataoffset > svlen)
138 croak ("data offset outside of string");
139
140 if (dowrite)
141 {
142 /* write: check length and adjust. */
143 if (length < 0 || length + dataoffset > svlen)
144 length = svlen - dataoffset;
145 }
146 else
147 {
148 /* read: grow scalar as necessary */
149 svptr = SvGROW (data, length + dataoffset);
150 }
151
152 if (length < 0)
153 croak ("length must not be negative");
154
155 Newz (0, req, 1, aio_cb);
156
157 if (!req)
158 croak ("out of memory during aio_req allocation");
159
160 req->type = dowrite ? REQ_WRITE : REQ_READ;
161 req->fd = fd;
162 req->offset = offset;
163 req->length = length;
164 req->data = SvREFCNT_inc (data);
165 req->dataptr = (char *)svptr + dataoffset;
166 req->callback = SvREFCNT_inc (callback);
167
168 send_req (req);
169}
170
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} 233}
274 234
275static void * 235static void *
276aio_proc (void *thr_arg) 236aio_proc (void *thr_arg)
277{ 237{
… …
304 264
305 type = req->type; 265 type = req->type;
306 266
307 switch (type) 267 switch (type)
308 { 268 {
309 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;
310 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;
311#if SYS_readahead 271#if SYS_readahead
312 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;
313#else 273#else
314 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; 274 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
315#endif 275#endif
… …
359 return 0; 319 return 0;
360} 320}
361 321
362MODULE = IO::AIO PACKAGE = IO::AIO 322MODULE = IO::AIO PACKAGE = IO::AIO
363 323
324PROTOTYPES: ENABLE
325
364BOOT: 326BOOT:
365{ 327{
366 if (pipe (respipe)) 328 if (pipe (respipe))
367 croak ("unable to initialize result pipe"); 329 croak ("unable to initialize result pipe");
368 330
… …
395 } 357 }
396 358
397 while (started > nthreads) 359 while (started > nthreads)
398 { 360 {
399 poll_wait (); 361 poll_wait ();
400 poll_cb (aTHX); 362 poll_cb ();
401 } 363 }
402} 364}
403 365
366int
367max_outstanding(nreqs)
368 int nreqs
369 PROTOTYPE: $
370 CODE:
371 RETVAL = max_outstanding;
372 max_outstanding = nreqs;
373
404void 374void
405aio_open(pathname,flags,mode,callback) 375aio_open(pathname,flags,mode,callback=&PL_sv_undef)
406 SV * pathname 376 SV * pathname
407 int flags 377 int flags
408 int mode 378 int mode
409 SV * callback 379 SV * callback
410 PROTOTYPE: $$$$ 380 PROTOTYPE: $$$;$
411 CODE: 381 CODE:
412{ 382{
413 aio_req req; 383 aio_req req;
414 384
415 Newz (0, req, 1, aio_cb); 385 Newz (0, req, 1, aio_cb);
… …
426 396
427 send_req (req); 397 send_req (req);
428} 398}
429 399
430void 400void
431aio_close(fh,callback) 401aio_close(fh,callback=&PL_sv_undef)
432 InputStream fh 402 SV * fh
433 SV * callback 403 SV * callback
434 PROTOTYPE: $$ 404 PROTOTYPE: $;$
435 ALIAS: 405 ALIAS:
436 aio_close = REQ_CLOSE 406 aio_close = REQ_CLOSE
437 aio_fsync = REQ_FSYNC 407 aio_fsync = REQ_FSYNC
438 aio_fdatasync = REQ_FDATASYNC 408 aio_fdatasync = REQ_FDATASYNC
439 CODE: 409 CODE:
… …
444 414
445 if (!req) 415 if (!req)
446 croak ("out of memory during aio_req allocation"); 416 croak ("out of memory during aio_req allocation");
447 417
448 req->type = ix; 418 req->type = ix;
419 req->fh = newSVsv (fh);
449 req->fd = PerlIO_fileno (fh); 420 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
450 req->callback = SvREFCNT_inc (callback); 421 req->callback = SvREFCNT_inc (callback);
451 422
452 send_req (req); 423 send_req (req);
453} 424}
454 425
455void 426void
456aio_read(fh,offset,length,data,dataoffset,callback) 427aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
457 InputStream fh 428 SV * fh
458 UV offset 429 UV offset
459 IV length 430 IV length
460 SV * data 431 SV * data
461 IV dataoffset 432 IV dataoffset
462 SV * callback 433 SV * callback
434 ALIAS:
435 aio_read = REQ_READ
436 aio_write = REQ_WRITE
463 PROTOTYPE: $$$$$$ 437 PROTOTYPE: $$$$$;$
464 CODE: 438 CODE:
465 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466
467void
468aio_write(fh,offset,length,data,dataoffset,callback)
469 OutputStream fh
470 UV offset
471 IV length
472 SV * data
473 IV dataoffset
474 SV * callback
475 PROTOTYPE: $$$$$$
476 CODE:
477 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478
479void
480aio_readahead(fh,offset,length,callback)
481 InputStream fh
482 UV offset
483 IV length
484 SV * callback
485 PROTOTYPE: $$$$
486 CODE:
487{ 439{
488 aio_req req; 440 aio_req req;
441 STRLEN svlen;
442 char *svptr = SvPV (data, svlen);
443
444 SvUPGRADE (data, SVt_PV);
445 SvPOK_on (data);
446
447 if (dataoffset < 0)
448 dataoffset += svlen;
449
450 if (dataoffset < 0 || dataoffset > svlen)
451 croak ("data offset outside of string");
452
453 if (ix == REQ_WRITE)
454 {
455 /* write: check length and adjust. */
456 if (length < 0 || length + dataoffset > svlen)
457 length = svlen - dataoffset;
458 }
459 else
460 {
461 /* read: grow scalar as necessary */
462 svptr = SvGROW (data, length + dataoffset);
463 }
489 464
490 if (length < 0) 465 if (length < 0)
491 croak ("length must not be negative"); 466 croak ("length must not be negative");
492 467
493 Newz (0, req, 1, aio_cb); 468 Newz (0, req, 1, aio_cb);
494 469
495 if (!req) 470 if (!req)
496 croak ("out of memory during aio_req allocation"); 471 croak ("out of memory during aio_req allocation");
497 472
473 req->type = ix;
474 req->fh = newSVsv (fh);
475 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
476 : IoOFP (sv_2io (fh)));
477 req->offset = offset;
478 req->length = length;
479 req->data = SvREFCNT_inc (data);
480 req->dataptr = (char *)svptr + dataoffset;
481 req->callback = SvREFCNT_inc (callback);
482
483 send_req (req);
484}
485
486void
487aio_readahead(fh,offset,length,callback=&PL_sv_undef)
488 SV * fh
489 UV offset
490 IV length
491 SV * callback
492 PROTOTYPE: $$$;$
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
498 req->type = REQ_READAHEAD; 505 req->type = REQ_READAHEAD;
506 req->fh = newSVsv (fh);
499 req->fd = PerlIO_fileno (fh); 507 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
500 req->offset = offset; 508 req->offset = offset;
501 req->length = length; 509 req->length = length;
502 req->callback = SvREFCNT_inc (callback); 510 req->callback = SvREFCNT_inc (callback);
503 511
504 send_req (req); 512 send_req (req);
505} 513}
506 514
507void 515void
508aio_stat(fh_or_path,callback) 516aio_stat(fh_or_path,callback=&PL_sv_undef)
509 SV * fh_or_path 517 SV * fh_or_path
510 SV * callback 518 SV * callback
511 PROTOTYPE: $$
512 ALIAS: 519 ALIAS:
520 aio_stat = REQ_STAT
513 aio_lstat = 1 521 aio_lstat = REQ_LSTAT
514 CODE: 522 CODE:
515{ 523{
516 aio_req req; 524 aio_req req;
517 525
518 Newz (0, req, 1, aio_cb); 526 Newz (0, req, 1, aio_cb);
… …
525 if (!req->statdata) 533 if (!req->statdata)
526 croak ("out of memory during aio_req->statdata allocation"); 534 croak ("out of memory during aio_req->statdata allocation");
527 535
528 if (SvPOK (fh_or_path)) 536 if (SvPOK (fh_or_path))
529 { 537 {
530 req->type = ix ? REQ_LSTAT : REQ_STAT; 538 req->type = ix;
531 req->data = newSVsv (fh_or_path); 539 req->data = newSVsv (fh_or_path);
532 req->dataptr = SvPV_nolen (req->data); 540 req->dataptr = SvPV_nolen (req->data);
533 } 541 }
534 else 542 else
535 { 543 {
536 req->type = REQ_FSTAT; 544 req->type = REQ_FSTAT;
545 req->fh = newSVsv (fh_or_path);
537 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 546 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
538 } 547 }
539 548
540 req->callback = SvREFCNT_inc (callback); 549 req->callback = SvREFCNT_inc (callback);
541 550
542 send_req (req); 551 send_req (req);
543} 552}
544 553
545void 554void
546aio_unlink(pathname,callback) 555aio_unlink(pathname,callback=&PL_sv_undef)
547 SV * pathname 556 SV * pathname
548 SV * callback 557 SV * callback
549 PROTOTYPE: $$
550 CODE: 558 CODE:
551{ 559{
552 aio_req req; 560 aio_req req;
553 561
554 Newz (0, req, 1, aio_cb); 562 Newz (0, req, 1, aio_cb);
… …
562 req->callback = SvREFCNT_inc (callback); 570 req->callback = SvREFCNT_inc (callback);
563 571
564 send_req (req); 572 send_req (req);
565} 573}
566 574
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
567int 595int
568poll_fileno() 596poll_fileno()
569 PROTOTYPE: 597 PROTOTYPE:
570 CODE: 598 CODE:
571 RETVAL = respipe [0]; 599 RETVAL = respipe [0];
… …
574 602
575int 603int
576poll_cb(...) 604poll_cb(...)
577 PROTOTYPE: 605 PROTOTYPE:
578 CODE: 606 CODE:
579 RETVAL = poll_cb (aTHX); 607 RETVAL = poll_cb ();
580 OUTPUT: 608 OUTPUT:
581 RETVAL 609 RETVAL
582 610
583void 611void
584poll_wait() 612poll_wait()

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