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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 1.15 by root, Sat Jul 23 18:19:56 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
7#include <sys/types.h> 5#include <sys/types.h>
8#include <sys/stat.h> 6#include <sys/stat.h>
7
9#include <unistd.h> 8#include <unistd.h>
10#include <fcntl.h> 9#include <fcntl.h>
11#include <signal.h> 10#include <signal.h>
12#include <sched.h> 11#include <sched.h>
13#include <endian.h> 12#if __linux
13#include <sys/syscall.h>
14#endif
14 15
15#include <pthread.h> 16#include <pthread.h>
16#include <sys/syscall.h>
17 17
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
21 21
22#if __i386 || __amd64
23# define STACKSIZE ( 256 * sizeof (long))
24#elif __ia64 22#if __ia64
25# define STACKSIZE (8192 * sizeof (long)) 23# define STACKSIZE 65536
26#else 24#else
27# define STACKSIZE ( 512 * sizeof (long)) 25# define STACKSIZE 4096
28#endif 26#endif
29 27
30enum { 28enum {
31 REQ_QUIT, 29 REQ_QUIT,
32 REQ_OPEN, REQ_CLOSE, 30 REQ_OPEN, REQ_CLOSE,
… …
44 off_t offset; 42 off_t offset;
45 size_t length; 43 size_t length;
46 ssize_t result; 44 ssize_t result;
47 mode_t mode; /* open */ 45 mode_t mode; /* open */
48 int errorno; 46 int errorno;
49 SV *data, *callback; 47 SV *data, *callback, *fh;
50 void *dataptr; 48 void *dataptr;
51 STRLEN dataoffset; 49 STRLEN dataoffset;
52 50
53 Stat_t *statdata; 51 Stat_t *statdata;
54} aio_cb; 52} aio_cb;
55 53
56typedef aio_cb *aio_req; 54typedef aio_cb *aio_req;
57 55
58static int started; 56static int started;
59static int nreqs; 57static volatile int nreqs;
58static int max_outstanding = 1<<30;
60static int respipe [2]; 59static int respipe [2];
61 60
62static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 61static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
63static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 62static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
64static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 63static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
65 64
66static volatile aio_req reqs, reqe; /* queue start, queue end */ 65static volatile aio_req reqs, reqe; /* queue start, queue end */
67static volatile aio_req ress, rese; /* queue start, queue end */ 66static volatile aio_req ress, rese; /* queue start, queue end */
67
68static void
69poll_wait ()
70{
71 if (nreqs && !ress)
72 {
73 fd_set rfd;
74 FD_ZERO(&rfd);
75 FD_SET(respipe [0], &rfd);
76
77 select (respipe [0] + 1, &rfd, 0, 0, 0);
78 }
79}
80
81static int
82poll_cb ()
83{
84 dSP;
85 int count = 0;
86 aio_req req, prv;
87
88 pthread_mutex_lock (&reslock);
89
90 {
91 /* read any signals sent by the worker threads */
92 char buf [32];
93 while (read (respipe [0], buf, 32) > 0)
94 ;
95 }
96
97 req = ress;
98 ress = rese = 0;
99
100 pthread_mutex_unlock (&reslock);
101
102 while (req)
103 {
104 nreqs--;
105
106 if (req->type == REQ_QUIT)
107 started--;
108 else
109 {
110 int errorno = errno;
111 errno = req->errorno;
112
113 if (req->type == REQ_READ)
114 SvCUR_set (req->data, req->dataoffset
115 + req->result > 0 ? req->result : 0);
116
117 if (req->data)
118 SvREFCNT_dec (req->data);
119
120 if (req->fh)
121 SvREFCNT_dec (req->fh);
122
123 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
124 {
125 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
126 PL_laststatval = req->result;
127 PL_statcache = *(req->statdata);
128
129 Safefree (req->statdata);
130 }
131
132 ENTER;
133 PUSHMARK (SP);
134 XPUSHs (sv_2mortal (newSViv (req->result)));
135
136 if (req->type == REQ_OPEN)
137 {
138 /* convert fd to fh */
139 SV *fh;
140
141 PUTBACK;
142 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
143 SPAGAIN;
144
145 fh = SvREFCNT_inc (POPs);
146
147 PUSHMARK (SP);
148 XPUSHs (sv_2mortal (fh));
149 }
150
151 if (SvOK (req->callback))
152 {
153 PUTBACK;
154 call_sv (req->callback, G_VOID | G_EVAL);
155 SPAGAIN;
156 }
157
158 LEAVE;
159
160 if (req->callback)
161 SvREFCNT_dec (req->callback);
162
163 errno = errorno;
164 count++;
165 }
166
167 prv = req;
168 req = req->next;
169 Safefree (prv);
170
171 /* TODO: croak on errors? */
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{
115 aio_req req; 229 aio_req req;
116 New (0, req, 1, aio_cb); 230 New (0, req, 1, aio_cb);
117 req->type = REQ_QUIT; 231 req->type = REQ_QUIT;
118 232
119 send_req (req); 233 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} 234}
274 235
275static void * 236static void *
276aio_proc (void *thr_arg) 237aio_proc (void *thr_arg)
277{ 238{
… …
304 265
305 type = req->type; 266 type = req->type;
306 267
307 switch (type) 268 switch (type)
308 { 269 {
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#if SYS_readahead
312 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 273 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
313#else 274#else
314 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; 275 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
315#endif 276#endif
… …
359 return 0; 320 return 0;
360} 321}
361 322
362MODULE = IO::AIO PACKAGE = IO::AIO 323MODULE = IO::AIO PACKAGE = IO::AIO
363 324
325PROTOTYPES: ENABLE
326
364BOOT: 327BOOT:
365{ 328{
366 if (pipe (respipe)) 329 if (pipe (respipe))
367 croak ("unable to initialize result pipe"); 330 croak ("unable to initialize result pipe");
368 331
… …
395 } 358 }
396 359
397 while (started > nthreads) 360 while (started > nthreads)
398 { 361 {
399 poll_wait (); 362 poll_wait ();
400 poll_cb (aTHX); 363 poll_cb ();
401 } 364 }
402} 365}
403 366
367int
368max_outstanding(nreqs)
369 int nreqs
370 PROTOTYPE: $
371 CODE:
372 RETVAL = max_outstanding;
373 max_outstanding = nreqs;
374
404void 375void
405aio_open(pathname,flags,mode,callback) 376aio_open(pathname,flags,mode,callback=&PL_sv_undef)
406 SV * pathname 377 SV * pathname
407 int flags 378 int flags
408 int mode 379 int mode
409 SV * callback 380 SV * callback
410 PROTOTYPE: $$$$ 381 PROTOTYPE: $$$;$
411 CODE: 382 CODE:
412{ 383{
413 aio_req req; 384 aio_req req;
414 385
415 Newz (0, req, 1, aio_cb); 386 Newz (0, req, 1, aio_cb);
… …
426 397
427 send_req (req); 398 send_req (req);
428} 399}
429 400
430void 401void
431aio_close(fh,callback) 402aio_close(fh,callback=&PL_sv_undef)
432 InputStream fh 403 SV * fh
433 SV * callback 404 SV * callback
434 PROTOTYPE: $$ 405 PROTOTYPE: $;$
435 ALIAS: 406 ALIAS:
436 aio_close = REQ_CLOSE 407 aio_close = REQ_CLOSE
437 aio_fsync = REQ_FSYNC 408 aio_fsync = REQ_FSYNC
438 aio_fdatasync = REQ_FDATASYNC 409 aio_fdatasync = REQ_FDATASYNC
439 CODE: 410 CODE:
… …
444 415
445 if (!req) 416 if (!req)
446 croak ("out of memory during aio_req allocation"); 417 croak ("out of memory during aio_req allocation");
447 418
448 req->type = ix; 419 req->type = ix;
420 req->fh = newSVsv (fh);
449 req->fd = PerlIO_fileno (fh); 421 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
450 req->callback = SvREFCNT_inc (callback); 422 req->callback = SvREFCNT_inc (callback);
451 423
452 send_req (req); 424 send_req (req);
453} 425}
454 426
455void 427void
456aio_read(fh,offset,length,data,dataoffset,callback) 428aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
457 InputStream fh 429 SV * fh
458 UV offset 430 UV offset
459 IV length 431 IV length
460 SV * data 432 SV * data
461 IV dataoffset 433 IV dataoffset
462 SV * callback 434 SV * callback
435 ALIAS:
436 aio_read = REQ_READ
437 aio_write = REQ_WRITE
463 PROTOTYPE: $$$$$$ 438 PROTOTYPE: $$$$$;$
464 CODE: 439 CODE:
465 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466
467void
468aio_write(fh,offset,length,data,dataoffset,callback)
469 OutputStream fh
470 UV offset
471 IV length
472 SV * data
473 IV dataoffset
474 SV * callback
475 PROTOTYPE: $$$$$$
476 CODE:
477 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478
479void
480aio_readahead(fh,offset,length,callback)
481 InputStream fh
482 UV offset
483 IV length
484 SV * callback
485 PROTOTYPE: $$$$
486 CODE:
487{ 440{
488 aio_req req; 441 aio_req req;
442 STRLEN svlen;
443 char *svptr = SvPV (data, svlen);
444
445 SvUPGRADE (data, SVt_PV);
446 SvPOK_on (data);
447
448 if (dataoffset < 0)
449 dataoffset += svlen;
450
451 if (dataoffset < 0 || dataoffset > svlen)
452 croak ("data offset outside of string");
453
454 if (ix == REQ_WRITE)
455 {
456 /* write: check length and adjust. */
457 if (length < 0 || length + dataoffset > svlen)
458 length = svlen - dataoffset;
459 }
460 else
461 {
462 /* read: grow scalar as necessary */
463 svptr = SvGROW (data, length + dataoffset);
464 }
489 465
490 if (length < 0) 466 if (length < 0)
491 croak ("length must not be negative"); 467 croak ("length must not be negative");
492 468
493 Newz (0, req, 1, aio_cb); 469 Newz (0, req, 1, aio_cb);
494 470
495 if (!req) 471 if (!req)
496 croak ("out of memory during aio_req allocation"); 472 croak ("out of memory during aio_req allocation");
497 473
474 req->type = ix;
475 req->fh = newSVsv (fh);
476 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
477 : IoOFP (sv_2io (fh)));
478 req->offset = offset;
479 req->length = length;
480 req->data = SvREFCNT_inc (data);
481 req->dataptr = (char *)svptr + dataoffset;
482 req->callback = SvREFCNT_inc (callback);
483
484 send_req (req);
485}
486
487void
488aio_readahead(fh,offset,length,callback=&PL_sv_undef)
489 SV * fh
490 UV offset
491 IV length
492 SV * callback
493 PROTOTYPE: $$$;$
494 CODE:
495{
496 aio_req req;
497
498 if (length < 0)
499 croak ("length must not be negative");
500
501 Newz (0, req, 1, aio_cb);
502
503 if (!req)
504 croak ("out of memory during aio_req allocation");
505
498 req->type = REQ_READAHEAD; 506 req->type = REQ_READAHEAD;
507 req->fh = newSVsv (fh);
499 req->fd = PerlIO_fileno (fh); 508 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
500 req->offset = offset; 509 req->offset = offset;
501 req->length = length; 510 req->length = length;
502 req->callback = SvREFCNT_inc (callback); 511 req->callback = SvREFCNT_inc (callback);
503 512
504 send_req (req); 513 send_req (req);
505} 514}
506 515
507void 516void
508aio_stat(fh_or_path,callback) 517aio_stat(fh_or_path,callback=&PL_sv_undef)
509 SV * fh_or_path 518 SV * fh_or_path
510 SV * callback 519 SV * callback
511 PROTOTYPE: $$
512 ALIAS: 520 ALIAS:
521 aio_stat = REQ_STAT
513 aio_lstat = 1 522 aio_lstat = REQ_LSTAT
514 CODE: 523 CODE:
515{ 524{
516 aio_req req; 525 aio_req req;
517 526
518 Newz (0, req, 1, aio_cb); 527 Newz (0, req, 1, aio_cb);
… …
525 if (!req->statdata) 534 if (!req->statdata)
526 croak ("out of memory during aio_req->statdata allocation"); 535 croak ("out of memory during aio_req->statdata allocation");
527 536
528 if (SvPOK (fh_or_path)) 537 if (SvPOK (fh_or_path))
529 { 538 {
530 req->type = ix ? REQ_LSTAT : REQ_STAT; 539 req->type = ix;
531 req->data = newSVsv (fh_or_path); 540 req->data = newSVsv (fh_or_path);
532 req->dataptr = SvPV_nolen (req->data); 541 req->dataptr = SvPV_nolen (req->data);
533 } 542 }
534 else 543 else
535 { 544 {
536 req->type = REQ_FSTAT; 545 req->type = REQ_FSTAT;
546 req->fh = newSVsv (fh_or_path);
537 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 547 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
538 } 548 }
539 549
540 req->callback = SvREFCNT_inc (callback); 550 req->callback = SvREFCNT_inc (callback);
541 551
542 send_req (req); 552 send_req (req);
543} 553}
544 554
545void 555void
546aio_unlink(pathname,callback) 556aio_unlink(pathname,callback=&PL_sv_undef)
547 SV * pathname 557 SV * pathname
548 SV * callback 558 SV * callback
549 PROTOTYPE: $$
550 CODE: 559 CODE:
551{ 560{
552 aio_req req; 561 aio_req req;
553 562
554 Newz (0, req, 1, aio_cb); 563 Newz (0, req, 1, aio_cb);
… …
562 req->callback = SvREFCNT_inc (callback); 571 req->callback = SvREFCNT_inc (callback);
563 572
564 send_req (req); 573 send_req (req);
565} 574}
566 575
576void
577flush()
578 PROTOTYPE:
579 CODE:
580 while (nreqs)
581 {
582 poll_wait ();
583 poll_cb ();
584 }
585
586void
587poll()
588 PROTOTYPE:
589 CODE:
590 if (nreqs)
591 {
592 poll_wait ();
593 poll_cb ();
594 }
595
567int 596int
568poll_fileno() 597poll_fileno()
569 PROTOTYPE: 598 PROTOTYPE:
570 CODE: 599 CODE:
571 RETVAL = respipe [0]; 600 RETVAL = respipe [0];
… …
574 603
575int 604int
576poll_cb(...) 605poll_cb(...)
577 PROTOTYPE: 606 PROTOTYPE:
578 CODE: 607 CODE:
579 RETVAL = poll_cb (aTHX); 608 RETVAL = poll_cb ();
580 OUTPUT: 609 OUTPUT:
581 RETVAL 610 RETVAL
582 611
583void 612void
584poll_wait() 613poll_wait()

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