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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 1.13 by root, Fri Jul 22 08:25:22 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,
… …
44 off_t offset; 44 off_t offset;
45 size_t length; 45 size_t length;
46 ssize_t result; 46 ssize_t result;
47 mode_t mode; /* open */ 47 mode_t mode; /* open */
48 int errorno; 48 int errorno;
49 SV *data, *callback; 49 SV *data, *callback, *fh;
50 void *dataptr; 50 void *dataptr;
51 STRLEN dataoffset; 51 STRLEN dataoffset;
52 52
53 Stat_t *statdata; 53 Stat_t *statdata;
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->fh)
123 SvREFCNT_dec (req->fh);
124
125 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
126 {
127 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
128 PL_laststatval = req->result;
129 PL_statcache = *(req->statdata);
130
131 Safefree (req->statdata);
132 }
133
134 ENTER;
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 = SvREFCNT_inc (POPs);
148
149 PUSHMARK (SP);
150 XPUSHs (sv_2mortal (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 LEAVE;
161
162 if (req->callback)
163 SvREFCNT_dec (req->callback);
164
165 errno = errorno;
166 count++;
167 }
168
169 prv = req;
170 req = req->next;
171 Safefree (prv);
172
173 /* TODO: croak on errors? */
174 }
175
176 return count;
177}
68 178
69static void *aio_proc(void *arg); 179static void *aio_proc(void *arg);
70 180
71static void 181static void
72start_thread (void) 182start_thread (void)
… …
105 else 215 else
106 reqe = reqs = req; 216 reqe = reqs = req;
107 217
108 pthread_cond_signal (&reqwait); 218 pthread_cond_signal (&reqwait);
109 pthread_mutex_unlock (&reqlock); 219 pthread_mutex_unlock (&reqlock);
220
221 while (nreqs > max_outstanding)
222 {
223 poll_wait ();
224 poll_cb ();
225 }
110} 226}
111 227
112static void 228static void
113end_thread (void) 229end_thread (void)
114{ 230{
115 aio_req req; 231 aio_req req;
116 New (0, req, 1, aio_cb); 232 New (0, req, 1, aio_cb);
117 req->type = REQ_QUIT; 233 req->type = REQ_QUIT;
118 234
119 send_req (req); 235 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} 236}
274 237
275static void * 238static void *
276aio_proc (void *thr_arg) 239aio_proc (void *thr_arg)
277{ 240{
… …
304 267
305 type = req->type; 268 type = req->type;
306 269
307 switch (type) 270 switch (type)
308 { 271 {
309 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; 272 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; 273 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
311#if SYS_readahead 274#if SYS_readahead
312 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 275 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
313#else 276#else
314 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; 277 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
315#endif 278#endif
… …
359 return 0; 322 return 0;
360} 323}
361 324
362MODULE = IO::AIO PACKAGE = IO::AIO 325MODULE = IO::AIO PACKAGE = IO::AIO
363 326
327PROTOTYPES: ENABLE
328
364BOOT: 329BOOT:
365{ 330{
366 if (pipe (respipe)) 331 if (pipe (respipe))
367 croak ("unable to initialize result pipe"); 332 croak ("unable to initialize result pipe");
368 333
… …
395 } 360 }
396 361
397 while (started > nthreads) 362 while (started > nthreads)
398 { 363 {
399 poll_wait (); 364 poll_wait ();
400 poll_cb (aTHX); 365 poll_cb ();
401 } 366 }
402} 367}
403 368
369int
370max_outstanding(nreqs)
371 int nreqs
372 PROTOTYPE: $
373 CODE:
374 RETVAL = max_outstanding;
375 max_outstanding = nreqs;
376
404void 377void
405aio_open(pathname,flags,mode,callback) 378aio_open(pathname,flags,mode,callback=&PL_sv_undef)
406 SV * pathname 379 SV * pathname
407 int flags 380 int flags
408 int mode 381 int mode
409 SV * callback 382 SV * callback
410 PROTOTYPE: $$$$ 383 PROTOTYPE: $$$;$
411 CODE: 384 CODE:
412{ 385{
413 aio_req req; 386 aio_req req;
414 387
415 Newz (0, req, 1, aio_cb); 388 Newz (0, req, 1, aio_cb);
… …
426 399
427 send_req (req); 400 send_req (req);
428} 401}
429 402
430void 403void
431aio_close(fh,callback) 404aio_close(fh,callback=&PL_sv_undef)
432 InputStream fh 405 SV * fh
433 SV * callback 406 SV * callback
434 PROTOTYPE: $$ 407 PROTOTYPE: $;$
435 ALIAS: 408 ALIAS:
436 aio_close = REQ_CLOSE 409 aio_close = REQ_CLOSE
437 aio_fsync = REQ_FSYNC 410 aio_fsync = REQ_FSYNC
438 aio_fdatasync = REQ_FDATASYNC 411 aio_fdatasync = REQ_FDATASYNC
439 CODE: 412 CODE:
… …
444 417
445 if (!req) 418 if (!req)
446 croak ("out of memory during aio_req allocation"); 419 croak ("out of memory during aio_req allocation");
447 420
448 req->type = ix; 421 req->type = ix;
422 req->fh = newSVsv (fh);
449 req->fd = PerlIO_fileno (fh); 423 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
450 req->callback = SvREFCNT_inc (callback); 424 req->callback = SvREFCNT_inc (callback);
451 425
452 send_req (req); 426 send_req (req);
453} 427}
454 428
455void 429void
456aio_read(fh,offset,length,data,dataoffset,callback) 430aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
457 InputStream fh 431 SV * fh
458 UV offset 432 UV offset
459 IV length 433 IV length
460 SV * data 434 SV * data
461 IV dataoffset 435 IV dataoffset
462 SV * callback 436 SV * callback
437 ALIAS:
438 aio_read = REQ_READ
439 aio_write = REQ_WRITE
463 PROTOTYPE: $$$$$$ 440 PROTOTYPE: $$$$$;$
464 CODE: 441 CODE:
465 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466
467void
468aio_write(fh,offset,length,data,dataoffset,callback)
469 OutputStream fh
470 UV offset
471 IV length
472 SV * data
473 IV dataoffset
474 SV * callback
475 PROTOTYPE: $$$$$$
476 CODE:
477 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478
479void
480aio_readahead(fh,offset,length,callback)
481 InputStream fh
482 UV offset
483 IV length
484 SV * callback
485 PROTOTYPE: $$$$
486 CODE:
487{ 442{
488 aio_req req; 443 aio_req req;
444 STRLEN svlen;
445 char *svptr = SvPV (data, svlen);
446
447 SvUPGRADE (data, SVt_PV);
448 SvPOK_on (data);
449
450 if (dataoffset < 0)
451 dataoffset += svlen;
452
453 if (dataoffset < 0 || dataoffset > svlen)
454 croak ("data offset outside of string");
455
456 if (ix == REQ_WRITE)
457 {
458 /* write: check length and adjust. */
459 if (length < 0 || length + dataoffset > svlen)
460 length = svlen - dataoffset;
461 }
462 else
463 {
464 /* read: grow scalar as necessary */
465 svptr = SvGROW (data, length + dataoffset);
466 }
489 467
490 if (length < 0) 468 if (length < 0)
491 croak ("length must not be negative"); 469 croak ("length must not be negative");
492 470
493 Newz (0, req, 1, aio_cb); 471 Newz (0, req, 1, aio_cb);
494 472
495 if (!req) 473 if (!req)
496 croak ("out of memory during aio_req allocation"); 474 croak ("out of memory during aio_req allocation");
497 475
476 req->type = ix;
477 req->fh = newSVsv (fh);
478 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
479 : IoOFP (sv_2io (fh)));
480 req->offset = offset;
481 req->length = length;
482 req->data = SvREFCNT_inc (data);
483 req->dataptr = (char *)svptr + dataoffset;
484 req->callback = SvREFCNT_inc (callback);
485
486 send_req (req);
487}
488
489void
490aio_readahead(fh,offset,length,callback=&PL_sv_undef)
491 SV * fh
492 UV offset
493 IV length
494 SV * callback
495 PROTOTYPE: $$$;$
496 CODE:
497{
498 aio_req req;
499
500 if (length < 0)
501 croak ("length must not be negative");
502
503 Newz (0, req, 1, aio_cb);
504
505 if (!req)
506 croak ("out of memory during aio_req allocation");
507
498 req->type = REQ_READAHEAD; 508 req->type = REQ_READAHEAD;
509 req->fh = newSVsv (fh);
499 req->fd = PerlIO_fileno (fh); 510 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
500 req->offset = offset; 511 req->offset = offset;
501 req->length = length; 512 req->length = length;
502 req->callback = SvREFCNT_inc (callback); 513 req->callback = SvREFCNT_inc (callback);
503 514
504 send_req (req); 515 send_req (req);
505} 516}
506 517
507void 518void
508aio_stat(fh_or_path,callback) 519aio_stat(fh_or_path,callback=&PL_sv_undef)
509 SV * fh_or_path 520 SV * fh_or_path
510 SV * callback 521 SV * callback
511 PROTOTYPE: $$
512 ALIAS: 522 ALIAS:
523 aio_stat = REQ_STAT
513 aio_lstat = 1 524 aio_lstat = REQ_LSTAT
514 CODE: 525 CODE:
515{ 526{
516 aio_req req; 527 aio_req req;
517 528
518 Newz (0, req, 1, aio_cb); 529 Newz (0, req, 1, aio_cb);
… …
525 if (!req->statdata) 536 if (!req->statdata)
526 croak ("out of memory during aio_req->statdata allocation"); 537 croak ("out of memory during aio_req->statdata allocation");
527 538
528 if (SvPOK (fh_or_path)) 539 if (SvPOK (fh_or_path))
529 { 540 {
530 req->type = ix ? REQ_LSTAT : REQ_STAT; 541 req->type = ix;
531 req->data = newSVsv (fh_or_path); 542 req->data = newSVsv (fh_or_path);
532 req->dataptr = SvPV_nolen (req->data); 543 req->dataptr = SvPV_nolen (req->data);
533 } 544 }
534 else 545 else
535 { 546 {
536 req->type = REQ_FSTAT; 547 req->type = REQ_FSTAT;
548 req->fh = newSVsv (fh_or_path);
537 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 549 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
538 } 550 }
539 551
540 req->callback = SvREFCNT_inc (callback); 552 req->callback = SvREFCNT_inc (callback);
541 553
542 send_req (req); 554 send_req (req);
543} 555}
544 556
545void 557void
546aio_unlink(pathname,callback) 558aio_unlink(pathname,callback=&PL_sv_undef)
547 SV * pathname 559 SV * pathname
548 SV * callback 560 SV * callback
549 PROTOTYPE: $$
550 CODE: 561 CODE:
551{ 562{
552 aio_req req; 563 aio_req req;
553 564
554 Newz (0, req, 1, aio_cb); 565 Newz (0, req, 1, aio_cb);
… …
562 req->callback = SvREFCNT_inc (callback); 573 req->callback = SvREFCNT_inc (callback);
563 574
564 send_req (req); 575 send_req (req);
565} 576}
566 577
578void
579flush()
580 PROTOTYPE:
581 CODE:
582 while (nreqs)
583 {
584 poll_wait ();
585 poll_cb ();
586 }
587
588void
589poll()
590 PROTOTYPE:
591 CODE:
592 if (nreqs)
593 {
594 poll_wait ();
595 poll_cb ();
596 }
597
567int 598int
568poll_fileno() 599poll_fileno()
569 PROTOTYPE: 600 PROTOTYPE:
570 CODE: 601 CODE:
571 RETVAL = respipe [0]; 602 RETVAL = respipe [0];
… …
574 605
575int 606int
576poll_cb(...) 607poll_cb(...)
577 PROTOTYPE: 608 PROTOTYPE:
578 CODE: 609 CODE:
579 RETVAL = poll_cb (aTHX); 610 RETVAL = poll_cb ();
580 OUTPUT: 611 OUTPUT:
581 RETVAL 612 RETVAL
582 613
583void 614void
584poll_wait() 615poll_wait()

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