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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 1.16 by root, Sun Jul 31 18:20:07 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#include "autoconf/config.h"
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 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 {
269#if HAVE_PREADWRITE
309 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; 270 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; 271 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
311#if SYS_readahead 272#else
273# error "pread/pwrite cannot be emulated, fix your os"
274#endif
275
276#if HAVE_READAHEAD
312 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 277 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
313#else 278#else
279 // TODO: emulate
314 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; 280 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
315#endif 281#endif
316 282
317 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 283 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
318 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 284 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
… …
320 286
321 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 287 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
322 case REQ_CLOSE: req->result = close (req->fd); break; 288 case REQ_CLOSE: req->result = close (req->fd); break;
323 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 289 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
324 290
291 case REQ_FDATASYNC:
292#if HAVE_FDATASYNC
293 req->result = fdatasync (req->fd); break;
294#endif
325 case REQ_FSYNC: req->result = fsync (req->fd); break; 295 case REQ_FSYNC: req->result = fsync (req->fd); break;
326 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
327 296
328 case REQ_QUIT: 297 case REQ_QUIT:
329 break; 298 break;
330 299
331 default: 300 default:
… …
359 return 0; 328 return 0;
360} 329}
361 330
362MODULE = IO::AIO PACKAGE = IO::AIO 331MODULE = IO::AIO PACKAGE = IO::AIO
363 332
333PROTOTYPES: ENABLE
334
364BOOT: 335BOOT:
365{ 336{
366 if (pipe (respipe)) 337 if (pipe (respipe))
367 croak ("unable to initialize result pipe"); 338 croak ("unable to initialize result pipe");
368 339
… …
395 } 366 }
396 367
397 while (started > nthreads) 368 while (started > nthreads)
398 { 369 {
399 poll_wait (); 370 poll_wait ();
400 poll_cb (aTHX); 371 poll_cb ();
401 } 372 }
402} 373}
403 374
375int
376max_outstanding(nreqs)
377 int nreqs
378 PROTOTYPE: $
379 CODE:
380 RETVAL = max_outstanding;
381 max_outstanding = nreqs;
382
404void 383void
405aio_open(pathname,flags,mode,callback) 384aio_open(pathname,flags,mode,callback=&PL_sv_undef)
406 SV * pathname 385 SV * pathname
407 int flags 386 int flags
408 int mode 387 int mode
409 SV * callback 388 SV * callback
410 PROTOTYPE: $$$$ 389 PROTOTYPE: $$$;$
411 CODE: 390 CODE:
412{ 391{
413 aio_req req; 392 aio_req req;
414 393
415 Newz (0, req, 1, aio_cb); 394 Newz (0, req, 1, aio_cb);
… …
426 405
427 send_req (req); 406 send_req (req);
428} 407}
429 408
430void 409void
431aio_close(fh,callback) 410aio_close(fh,callback=&PL_sv_undef)
432 InputStream fh 411 SV * fh
433 SV * callback 412 SV * callback
434 PROTOTYPE: $$ 413 PROTOTYPE: $;$
435 ALIAS: 414 ALIAS:
436 aio_close = REQ_CLOSE 415 aio_close = REQ_CLOSE
437 aio_fsync = REQ_FSYNC 416 aio_fsync = REQ_FSYNC
438 aio_fdatasync = REQ_FDATASYNC 417 aio_fdatasync = REQ_FDATASYNC
439 CODE: 418 CODE:
… …
444 423
445 if (!req) 424 if (!req)
446 croak ("out of memory during aio_req allocation"); 425 croak ("out of memory during aio_req allocation");
447 426
448 req->type = ix; 427 req->type = ix;
428 req->fh = newSVsv (fh);
449 req->fd = PerlIO_fileno (fh); 429 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
450 req->callback = SvREFCNT_inc (callback); 430 req->callback = SvREFCNT_inc (callback);
451 431
452 send_req (req); 432 send_req (req);
453} 433}
454 434
455void 435void
456aio_read(fh,offset,length,data,dataoffset,callback) 436aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
457 InputStream fh 437 SV * fh
458 UV offset 438 UV offset
459 IV length 439 IV length
460 SV * data 440 SV * data
461 IV dataoffset 441 IV dataoffset
462 SV * callback 442 SV * callback
443 ALIAS:
444 aio_read = REQ_READ
445 aio_write = REQ_WRITE
463 PROTOTYPE: $$$$$$ 446 PROTOTYPE: $$$$$;$
464 CODE: 447 CODE:
465 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466
467void
468aio_write(fh,offset,length,data,dataoffset,callback)
469 OutputStream fh
470 UV offset
471 IV length
472 SV * data
473 IV dataoffset
474 SV * callback
475 PROTOTYPE: $$$$$$
476 CODE:
477 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478
479void
480aio_readahead(fh,offset,length,callback)
481 InputStream fh
482 UV offset
483 IV length
484 SV * callback
485 PROTOTYPE: $$$$
486 CODE:
487{ 448{
488 aio_req req; 449 aio_req req;
450 STRLEN svlen;
451 char *svptr = SvPV (data, svlen);
452
453 SvUPGRADE (data, SVt_PV);
454 SvPOK_on (data);
455
456 if (dataoffset < 0)
457 dataoffset += svlen;
458
459 if (dataoffset < 0 || dataoffset > svlen)
460 croak ("data offset outside of string");
461
462 if (ix == REQ_WRITE)
463 {
464 /* write: check length and adjust. */
465 if (length < 0 || length + dataoffset > svlen)
466 length = svlen - dataoffset;
467 }
468 else
469 {
470 /* read: grow scalar as necessary */
471 svptr = SvGROW (data, length + dataoffset);
472 }
489 473
490 if (length < 0) 474 if (length < 0)
491 croak ("length must not be negative"); 475 croak ("length must not be negative");
492 476
493 Newz (0, req, 1, aio_cb); 477 Newz (0, req, 1, aio_cb);
494 478
495 if (!req) 479 if (!req)
496 croak ("out of memory during aio_req allocation"); 480 croak ("out of memory during aio_req allocation");
497 481
482 req->type = ix;
483 req->fh = newSVsv (fh);
484 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
485 : IoOFP (sv_2io (fh)));
486 req->offset = offset;
487 req->length = length;
488 req->data = SvREFCNT_inc (data);
489 req->dataptr = (char *)svptr + dataoffset;
490 req->callback = SvREFCNT_inc (callback);
491
492 send_req (req);
493}
494
495void
496aio_readahead(fh,offset,length,callback=&PL_sv_undef)
497 SV * fh
498 UV offset
499 IV length
500 SV * callback
501 PROTOTYPE: $$$;$
502 CODE:
503{
504 aio_req req;
505
506 if (length < 0)
507 croak ("length must not be negative");
508
509 Newz (0, req, 1, aio_cb);
510
511 if (!req)
512 croak ("out of memory during aio_req allocation");
513
498 req->type = REQ_READAHEAD; 514 req->type = REQ_READAHEAD;
515 req->fh = newSVsv (fh);
499 req->fd = PerlIO_fileno (fh); 516 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
500 req->offset = offset; 517 req->offset = offset;
501 req->length = length; 518 req->length = length;
502 req->callback = SvREFCNT_inc (callback); 519 req->callback = SvREFCNT_inc (callback);
503 520
504 send_req (req); 521 send_req (req);
505} 522}
506 523
507void 524void
508aio_stat(fh_or_path,callback) 525aio_stat(fh_or_path,callback=&PL_sv_undef)
509 SV * fh_or_path 526 SV * fh_or_path
510 SV * callback 527 SV * callback
511 PROTOTYPE: $$
512 ALIAS: 528 ALIAS:
529 aio_stat = REQ_STAT
513 aio_lstat = 1 530 aio_lstat = REQ_LSTAT
514 CODE: 531 CODE:
515{ 532{
516 aio_req req; 533 aio_req req;
517 534
518 Newz (0, req, 1, aio_cb); 535 Newz (0, req, 1, aio_cb);
… …
525 if (!req->statdata) 542 if (!req->statdata)
526 croak ("out of memory during aio_req->statdata allocation"); 543 croak ("out of memory during aio_req->statdata allocation");
527 544
528 if (SvPOK (fh_or_path)) 545 if (SvPOK (fh_or_path))
529 { 546 {
530 req->type = ix ? REQ_LSTAT : REQ_STAT; 547 req->type = ix;
531 req->data = newSVsv (fh_or_path); 548 req->data = newSVsv (fh_or_path);
532 req->dataptr = SvPV_nolen (req->data); 549 req->dataptr = SvPV_nolen (req->data);
533 } 550 }
534 else 551 else
535 { 552 {
536 req->type = REQ_FSTAT; 553 req->type = REQ_FSTAT;
554 req->fh = newSVsv (fh_or_path);
537 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 555 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
538 } 556 }
539 557
540 req->callback = SvREFCNT_inc (callback); 558 req->callback = SvREFCNT_inc (callback);
541 559
542 send_req (req); 560 send_req (req);
543} 561}
544 562
545void 563void
546aio_unlink(pathname,callback) 564aio_unlink(pathname,callback=&PL_sv_undef)
547 SV * pathname 565 SV * pathname
548 SV * callback 566 SV * callback
549 PROTOTYPE: $$
550 CODE: 567 CODE:
551{ 568{
552 aio_req req; 569 aio_req req;
553 570
554 Newz (0, req, 1, aio_cb); 571 Newz (0, req, 1, aio_cb);
… …
562 req->callback = SvREFCNT_inc (callback); 579 req->callback = SvREFCNT_inc (callback);
563 580
564 send_req (req); 581 send_req (req);
565} 582}
566 583
584void
585flush()
586 PROTOTYPE:
587 CODE:
588 while (nreqs)
589 {
590 poll_wait ();
591 poll_cb ();
592 }
593
594void
595poll()
596 PROTOTYPE:
597 CODE:
598 if (nreqs)
599 {
600 poll_wait ();
601 poll_cb ();
602 }
603
567int 604int
568poll_fileno() 605poll_fileno()
569 PROTOTYPE: 606 PROTOTYPE:
570 CODE: 607 CODE:
571 RETVAL = respipe [0]; 608 RETVAL = respipe [0];
… …
574 611
575int 612int
576poll_cb(...) 613poll_cb(...)
577 PROTOTYPE: 614 PROTOTYPE:
578 CODE: 615 CODE:
579 RETVAL = poll_cb (aTHX); 616 RETVAL = poll_cb ();
580 OUTPUT: 617 OUTPUT:
581 RETVAL 618 RETVAL
582 619
583void 620void
584poll_wait() 621poll_wait()

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