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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.59 by root, Mon Oct 23 18:56:27 2006 UTC vs.
Revision 1.79 by root, Thu Oct 26 16:28:33 2006 UTC

1/* solaris */
2#define _POSIX_PTHREAD_SEMANTICS 1
3
4#if __linux && !defined(_GNU_SOURCE)
5# define _GNU_SOURCE
6#endif
7
8/* just in case */
1#define _REENTRANT 1 9#define _REENTRANT 1
10
2#include <errno.h> 11#include <errno.h>
3 12
4#include "EXTERN.h" 13#include "EXTERN.h"
5#include "perl.h" 14#include "perl.h"
6#include "XSUB.h" 15#include "XSUB.h"
… …
39/* used for struct dirent, AIX doesn't provide it */ 48/* used for struct dirent, AIX doesn't provide it */
40#ifndef NAME_MAX 49#ifndef NAME_MAX
41# define NAME_MAX 4096 50# define NAME_MAX 4096
42#endif 51#endif
43 52
53#ifndef PTHREAD_STACK_MIN
54/* care for broken platforms, e.g. windows */
55# define PTHREAD_STACK_MIN 16384
56#endif
57
44#if __ia64 58#if __ia64
45# define STACKSIZE 65536 59# define STACKSIZE 65536
60#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61# define STACKSIZE PTHREAD_STACK_MIN
46#else 62#else
47# define STACKSIZE 8192 63# define STACKSIZE 16384
48#endif 64#endif
65
66/* wether word reads are potentially non-atomic.
67 * this is conservatice, likely most arches this runs
68 * on have atomic word read/writes.
69 */
70#ifndef WORDREAD_UNSAFE
71# if __i386 || __x86_64
72# define WORDREAD_UNSAFE 0
73# else
74# define WORDREAD_UNSAFE 1
75# endif
76#endif
77
78/* buffer size for various temporary buffers */
79#define AIO_BUFSIZE 65536
80
81#define dBUF \
82 char *aio_buf; \
83 LOCK (wrklock); \
84 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
85 UNLOCK (wrklock); \
86 if (!aio_buf) \
87 return -1;
49 88
50enum { 89enum {
51 REQ_QUIT, 90 REQ_QUIT,
52 REQ_OPEN, REQ_CLOSE, 91 REQ_OPEN, REQ_CLOSE,
53 REQ_READ, REQ_WRITE, REQ_READAHEAD, 92 REQ_READ, REQ_WRITE, REQ_READAHEAD,
… …
56 REQ_FSYNC, REQ_FDATASYNC, 95 REQ_FSYNC, REQ_FDATASYNC,
57 REQ_UNLINK, REQ_RMDIR, REQ_RENAME, 96 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58 REQ_READDIR, 97 REQ_READDIR,
59 REQ_LINK, REQ_SYMLINK, 98 REQ_LINK, REQ_SYMLINK,
60 REQ_GROUP, REQ_NOP, 99 REQ_GROUP, REQ_NOP,
61 REQ_SLEEP, 100 REQ_BUSY,
62}; 101};
63 102
64#define AIO_REQ_KLASS "IO::AIO::REQ" 103#define AIO_REQ_KLASS "IO::AIO::REQ"
65#define AIO_GRP_KLASS "IO::AIO::GRP" 104#define AIO_GRP_KLASS "IO::AIO::GRP"
66 105
67typedef struct aio_cb 106typedef struct aio_cb
68{ 107{
69 struct aio_cb *volatile next; 108 struct aio_cb *volatile next;
70
71 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72
73 SV *self; /* the perl counterpart of this request, if any */
74 109
75 SV *data, *callback; 110 SV *data, *callback;
76 SV *fh, *fh2; 111 SV *fh, *fh2;
77 void *dataptr, *data2ptr; 112 void *dataptr, *data2ptr;
78 Stat_t *statdata; 113 Stat_t *statdata;
79 off_t offset; 114 off_t offset;
80 size_t length; 115 size_t length;
81 ssize_t result; 116 ssize_t result;
82 117
118 STRLEN dataoffset;
83 int type; 119 int type;
84 int fd, fd2; 120 int fd, fd2;
85 int errorno; 121 int errorno;
86 STRLEN dataoffset;
87 mode_t mode; /* open */ 122 mode_t mode; /* open */
123
124 unsigned char flags;
88 unsigned char pri; 125 unsigned char pri;
89 unsigned char flags; 126
127 SV *self; /* the perl counterpart of this request, if any */
128 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
90} aio_cb; 129} aio_cb;
91 130
92enum { 131enum {
93 FLAG_CANCELLED = 0x01, 132 FLAG_CANCELLED = 0x01,
94}; 133};
95 134
96typedef aio_cb *aio_req; 135typedef aio_cb *aio_req;
97typedef aio_cb *aio_req_ornot; 136typedef aio_cb *aio_req_ornot;
98 137
138enum {
139 PRI_MIN = -4,
140 PRI_MAX = 4,
141
142 DEFAULT_PRI = 0,
143 PRI_BIAS = -PRI_MIN,
144 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145};
146
147static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
99static int started, wanted; 149static unsigned int started, wanted;
100static volatile int nreqs; 150static volatile unsigned int nreqs, nready, npending;
101static int max_outstanding = 1<<30; 151static volatile unsigned int max_outstanding = 0xffffffff;
102static int respipe [2]; 152static int respipe [2];
103 153
154#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
155# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
156#else
157# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
158#endif
159
160#define LOCK(mutex) pthread_mutex_lock (&(mutex))
161#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
162
163/* worker threads management */
164static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
165
166typedef struct worker {
167 /* locked by wrklock */
168 struct worker *prev, *next;
169
170 pthread_t tid;
171
172 /* locked by reslock, reqlock or wrklock */
173 aio_req req; /* currently processed request */
174 void *dbuf;
175 DIR *dirp;
176} worker;
177
178static worker wrk_first = { &wrk_first, &wrk_first, 0 };
179
180static void worker_clear (worker *wrk)
181{
182 if (wrk->dirp)
183 {
184 closedir (wrk->dirp);
185 wrk->dirp = 0;
186 }
187
188 if (wrk->dbuf)
189 {
190 free (wrk->dbuf);
191 wrk->dbuf = 0;
192 }
193}
194
195static void worker_free (worker *wrk)
196{
197 wrk->next->prev = wrk->prev;
198 wrk->prev->next = wrk->next;
199
200 free (wrk);
201}
202
104static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 203static pthread_mutex_t reslock = AIO_MUTEX_INIT;
105static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 204static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
106static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 205static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
107 206
108static volatile aio_req reqs, reqe; /* queue start, queue end */ 207/*
109static volatile aio_req ress, rese; /* queue start, queue end */ 208 * a somewhat faster data structure might be nice, but
209 * with 8 priorities this actually needs <20 insns
210 * per shift, the most expensive operation.
211 */
212typedef struct {
213 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
214 int size;
215} reqq;
110 216
217static reqq req_queue;
218static reqq res_queue;
219
220int reqq_push (reqq *q, aio_req req)
221{
222 int pri = req->pri;
223 req->next = 0;
224
225 if (q->qe[pri])
226 {
227 q->qe[pri]->next = req;
228 q->qe[pri] = req;
229 }
230 else
231 q->qe[pri] = q->qs[pri] = req;
232
233 return q->size++;
234}
235
236aio_req reqq_shift (reqq *q)
237{
238 int pri;
239
240 if (!q->size)
241 return 0;
242
243 --q->size;
244
245 for (pri = NUM_PRI; pri--; )
246 {
247 aio_req req = q->qs[pri];
248
249 if (req)
250 {
251 if (!(q->qs[pri] = req->next))
252 q->qe[pri] = 0;
253
254 return req;
255 }
256 }
257
258 abort ();
259}
260
261static int poll_cb (int max);
111static void req_invoke (aio_req req); 262static void req_invoke (aio_req req);
112static void req_free (aio_req req); 263static void req_free (aio_req req);
264static void req_cancel (aio_req req);
113 265
114/* must be called at most once */ 266/* must be called at most once */
115static SV *req_sv (aio_req req, const char *klass) 267static SV *req_sv (aio_req req, const char *klass)
116{ 268{
117 if (!req->self) 269 if (!req->self)
… …
148 ENTER; 300 ENTER;
149 SAVETMPS; 301 SAVETMPS;
150 PUSHMARK (SP); 302 PUSHMARK (SP);
151 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 303 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
152 PUTBACK; 304 PUTBACK;
153 call_sv (grp->fh2, G_VOID | G_EVAL); 305 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
154 SPAGAIN; 306 SPAGAIN;
155 FREETMPS; 307 FREETMPS;
156 LEAVE; 308 LEAVE;
157 } 309 }
158 310
… …
181 } 333 }
182} 334}
183 335
184static void poll_wait () 336static void poll_wait ()
185{ 337{
186 if (nreqs && !ress)
187 {
188 fd_set rfd; 338 fd_set rfd;
339
340 while (nreqs)
341 {
342 int size;
343 if (WORDREAD_UNSAFE) LOCK (reslock);
344 size = res_queue.size;
345 if (WORDREAD_UNSAFE) UNLOCK (reslock);
346
347 if (size)
348 return;
349
189 FD_ZERO(&rfd); 350 FD_ZERO(&rfd);
190 FD_SET(respipe [0], &rfd); 351 FD_SET(respipe [0], &rfd);
191 352
192 select (respipe [0] + 1, &rfd, 0, 0, 0); 353 select (respipe [0] + 1, &rfd, 0, 0, 0);
193 } 354 }
194} 355}
195 356
196static void req_invoke (aio_req req) 357static void req_invoke (aio_req req)
197{ 358{
198 dSP; 359 dSP;
199 int errorno = errno;
200 360
201 if (req->flags & FLAG_CANCELLED || !SvOK (req->callback)) 361 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
202 return; 362 {
203
204 errno = req->errorno;
205
206 ENTER; 363 ENTER;
207 SAVETMPS; 364 SAVETMPS;
208 PUSHMARK (SP); 365 PUSHMARK (SP);
209 EXTEND (SP, 1); 366 EXTEND (SP, 1);
210 367
211 switch (req->type) 368 switch (req->type)
212 {
213 case REQ_READDIR:
214 { 369 {
215 SV *rv = &PL_sv_undef; 370 case REQ_READDIR:
216
217 if (req->result >= 0)
218 { 371 {
219 char *buf = req->data2ptr; 372 SV *rv = &PL_sv_undef;
220 AV *av = newAV ();
221 373
222 while (req->result) 374 if (req->result >= 0)
223 { 375 {
376 int i;
377 char *buf = req->data2ptr;
378 AV *av = newAV ();
379
380 av_extend (av, req->result - 1);
381
382 for (i = 0; i < req->result; ++i)
383 {
224 SV *sv = newSVpv (buf, 0); 384 SV *sv = newSVpv (buf, 0);
225 385
226 av_push (av, sv); 386 av_store (av, i, sv);
227 buf += SvCUR (sv) + 1; 387 buf += SvCUR (sv) + 1;
228 req->result--; 388 }
389
390 rv = sv_2mortal (newRV_noinc ((SV *)av));
229 } 391 }
230 392
231 rv = sv_2mortal (newRV_noinc ((SV *)av)); 393 PUSHs (rv);
232 } 394 }
395 break;
233 396
234 PUSHs (rv); 397 case REQ_OPEN:
398 {
399 /* convert fd to fh */
400 SV *fh;
401
402 PUSHs (sv_2mortal (newSViv (req->result)));
403 PUTBACK;
404 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
405 SPAGAIN;
406
407 fh = SvREFCNT_inc (POPs);
408
409 PUSHMARK (SP);
410 XPUSHs (sv_2mortal (fh));
411 }
412 break;
413
414 case REQ_GROUP:
415 req->fd = 2; /* mark group as finished */
416
417 if (req->data)
418 {
419 int i;
420 AV *av = (AV *)req->data;
421
422 EXTEND (SP, AvFILL (av) + 1);
423 for (i = 0; i <= AvFILL (av); ++i)
424 PUSHs (*av_fetch (av, i, 0));
425 }
426 break;
427
428 case REQ_NOP:
429 case REQ_BUSY:
430 break;
431
432 default:
433 PUSHs (sv_2mortal (newSViv (req->result)));
434 break;
235 } 435 }
236 break;
237 436
238 case REQ_OPEN: 437 errno = req->errorno;
239 {
240 /* convert fd to fh */
241 SV *fh;
242 438
243 PUSHs (sv_2mortal (newSViv (req->result)));
244 PUTBACK; 439 PUTBACK;
245 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
246 SPAGAIN;
247
248 fh = SvREFCNT_inc (POPs);
249
250 PUSHMARK (SP);
251 XPUSHs (sv_2mortal (fh));
252 }
253 break;
254
255 case REQ_GROUP:
256 req->fd = 2; /* mark group as finished */
257
258 if (req->data)
259 {
260 int i;
261 AV *av = (AV *)req->data;
262
263 EXTEND (SP, AvFILL (av) + 1);
264 for (i = 0; i <= AvFILL (av); ++i)
265 PUSHs (*av_fetch (av, i, 0));
266 }
267 break;
268
269 case REQ_NOP:
270 case REQ_SLEEP:
271 break;
272
273 default:
274 PUSHs (sv_2mortal (newSViv (req->result)));
275 break;
276 }
277
278
279 PUTBACK;
280 call_sv (req->callback, G_VOID | G_EVAL); 440 call_sv (req->callback, G_VOID | G_EVAL);
281 SPAGAIN; 441 SPAGAIN;
282 442
283 FREETMPS; 443 FREETMPS;
284 LEAVE; 444 LEAVE;
285
286 errno = errorno;
287
288 if (SvTRUE (ERRSV))
289 { 445 }
290 req_free (req);
291 croak (0);
292 }
293}
294 446
295static void req_free (aio_req req)
296{
297 if (req->grp) 447 if (req->grp)
298 { 448 {
299 aio_req grp = req->grp; 449 aio_req grp = req->grp;
300 450
301 /* unlink request */ 451 /* unlink request */
… …
306 grp->grp_first = req->grp_next; 456 grp->grp_first = req->grp_next;
307 457
308 aio_grp_dec (grp); 458 aio_grp_dec (grp);
309 } 459 }
310 460
461 if (SvTRUE (ERRSV))
462 {
463 req_free (req);
464 croak (0);
465 }
466}
467
468static void req_free (aio_req req)
469{
311 if (req->self) 470 if (req->self)
312 { 471 {
313 sv_unmagic (req->self, PERL_MAGIC_ext); 472 sv_unmagic (req->self, PERL_MAGIC_ext);
314 SvREFCNT_dec (req->self); 473 SvREFCNT_dec (req->self);
315 } 474 }
… …
318 SvREFCNT_dec (req->fh); 477 SvREFCNT_dec (req->fh);
319 SvREFCNT_dec (req->fh2); 478 SvREFCNT_dec (req->fh2);
320 SvREFCNT_dec (req->callback); 479 SvREFCNT_dec (req->callback);
321 Safefree (req->statdata); 480 Safefree (req->statdata);
322 481
323 if (req->type == REQ_READDIR && req->result >= 0) 482 if (req->type == REQ_READDIR)
324 free (req->data2ptr); 483 free (req->data2ptr);
325 484
326 Safefree (req); 485 Safefree (req);
327} 486}
328 487
488static void req_cancel_subs (aio_req grp)
489{
490 aio_req sub;
491
492 if (grp->type != REQ_GROUP)
493 return;
494
495 SvREFCNT_dec (grp->fh2);
496 grp->fh2 = 0;
497
498 for (sub = grp->grp_first; sub; sub = sub->grp_next)
499 req_cancel (sub);
500}
501
329static void req_cancel (aio_req req) 502static void req_cancel (aio_req req)
330{ 503{
331 req->flags |= FLAG_CANCELLED; 504 req->flags |= FLAG_CANCELLED;
332 505
333 if (req->type == REQ_GROUP) 506 req_cancel_subs (req);
334 {
335 aio_req sub;
336
337 for (sub = req->grp_first; sub; sub = sub->grp_next)
338 req_cancel (sub);
339 }
340} 507}
341 508
342static int poll_cb () 509static int poll_cb (int max)
343{ 510{
344 dSP; 511 dSP;
345 int count = 0; 512 int count = 0;
346 int do_croak = 0; 513 int do_croak = 0;
347 aio_req req; 514 aio_req req;
348 515
349 for (;;) 516 for (;;)
350 { 517 {
351 pthread_mutex_lock (&reslock); 518 while (max <= 0 || count < max)
352 req = ress;
353
354 if (req)
355 { 519 {
356 ress = req->next; 520 LOCK (reslock);
521 req = reqq_shift (&res_queue);
357 522
358 if (!ress) 523 if (req)
359 { 524 {
525 --npending;
526
527 if (!res_queue.size)
528 {
360 /* read any signals sent by the worker threads */ 529 /* read any signals sent by the worker threads */
361 char buf [32]; 530 char buf [32];
362 while (read (respipe [0], buf, 32) == 32) 531 while (read (respipe [0], buf, 32) == 32)
532 ;
363 ; 533 }
364
365 rese = 0;
366 } 534 }
535
536 UNLOCK (reslock);
537
538 if (!req)
539 break;
540
541 --nreqs;
542
543 if (req->type == REQ_QUIT)
544 --started;
545 else if (req->type == REQ_GROUP && req->length)
546 {
547 req->fd = 1; /* mark request as delayed */
548 continue;
549 }
550 else
551 {
552 if (req->type == REQ_READ)
553 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
554
555 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
556 SvREADONLY_off (req->data);
557
558 if (req->statdata)
559 {
560 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
561 PL_laststatval = req->result;
562 PL_statcache = *(req->statdata);
563 }
564
565 req_invoke (req);
566
567 count++;
568 }
569
570 req_free (req);
367 } 571 }
368 572
369 pthread_mutex_unlock (&reslock); 573 if (nreqs <= max_outstanding)
370
371 if (!req)
372 break; 574 break;
373 575
374 --nreqs; 576 poll_wait ();
375 577
376 if (req->type == REQ_QUIT) 578 max = 0;
377 started--;
378 else if (req->type == REQ_GROUP && req->length)
379 {
380 req->fd = 1; /* mark request as delayed */
381 continue;
382 }
383 else
384 {
385 if (req->type == REQ_READ)
386 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
387
388 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
389 SvREADONLY_off (req->data);
390
391 if (req->statdata)
392 {
393 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
394 PL_laststatval = req->result;
395 PL_statcache = *(req->statdata);
396 }
397
398 req_invoke (req);
399
400 count++;
401 }
402
403 req_free (req);
404 } 579 }
405 580
406 return count; 581 return count;
407} 582}
408 583
409static void *aio_proc(void *arg); 584static void *aio_proc(void *arg);
410 585
411static void start_thread (void) 586static void start_thread (void)
412{ 587{
413 sigset_t fullsigset, oldsigset; 588 sigset_t fullsigset, oldsigset;
414 pthread_t tid;
415 pthread_attr_t attr; 589 pthread_attr_t attr;
590
591 worker *wrk = calloc (1, sizeof (worker));
592
593 if (!wrk)
594 croak ("unable to allocate worker thread data");
416 595
417 pthread_attr_init (&attr); 596 pthread_attr_init (&attr);
418 pthread_attr_setstacksize (&attr, STACKSIZE); 597 pthread_attr_setstacksize (&attr, STACKSIZE);
419 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); 598 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
420 599
421 sigfillset (&fullsigset); 600 sigfillset (&fullsigset);
601
602 LOCK (wrklock);
422 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); 603 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
423 604
424 if (pthread_create (&tid, &attr, aio_proc, 0) == 0) 605 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
606 {
607 wrk->prev = &wrk_first;
608 wrk->next = wrk_first.next;
609 wrk_first.next->prev = wrk;
610 wrk_first.next = wrk;
425 started++; 611 ++started;
612 }
613 else
614 free (wrk);
426 615
427 sigprocmask (SIG_SETMASK, &oldsigset, 0); 616 sigprocmask (SIG_SETMASK, &oldsigset, 0);
617 UNLOCK (wrklock);
428} 618}
429 619
430static void req_send (aio_req req) 620static void req_send (aio_req req)
431{ 621{
432 while (started < wanted && nreqs >= started) 622 while (started < wanted && nreqs >= started)
433 start_thread (); 623 start_thread ();
434 624
435 ++nreqs; 625 ++nreqs;
436 626
437 pthread_mutex_lock (&reqlock); 627 LOCK (reqlock);
438 628 ++nready;
439 req->next = 0; 629 reqq_push (&req_queue, req);
440
441 if (reqe)
442 {
443 reqe->next = req;
444 reqe = req;
445 }
446 else
447 reqe = reqs = req;
448
449 pthread_cond_signal (&reqwait); 630 pthread_cond_signal (&reqwait);
450 pthread_mutex_unlock (&reqlock); 631 UNLOCK (reqlock);
451
452 if (nreqs > max_outstanding)
453 for (;;)
454 {
455 poll_cb ();
456
457 if (nreqs <= max_outstanding)
458 break;
459
460 poll_wait ();
461 }
462} 632}
463 633
464static void end_thread (void) 634static void end_thread (void)
465{ 635{
466 aio_req req; 636 aio_req req;
637
467 Newz (0, req, 1, aio_cb); 638 Newz (0, req, 1, aio_cb);
639
468 req->type = REQ_QUIT; 640 req->type = REQ_QUIT;
641 req->pri = PRI_MAX + PRI_BIAS;
469 642
470 req_send (req); 643 req_send (req);
471} 644}
472 645
473static void min_parallel (int nthreads) 646static void min_parallel (int nthreads)
… …
490 } 663 }
491 664
492 while (started > wanted) 665 while (started > wanted)
493 { 666 {
494 poll_wait (); 667 poll_wait ();
495 poll_cb (); 668 poll_cb (0);
496 } 669 }
497} 670}
498 671
499static void create_pipe () 672static void create_pipe ()
500{ 673{
… …
525static ssize_t pread (int fd, void *buf, size_t count, off_t offset) 698static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
526{ 699{
527 ssize_t res; 700 ssize_t res;
528 off_t ooffset; 701 off_t ooffset;
529 702
530 pthread_mutex_lock (&preadwritelock); 703 LOCK (preadwritelock);
531 ooffset = lseek (fd, 0, SEEK_CUR); 704 ooffset = lseek (fd, 0, SEEK_CUR);
532 lseek (fd, offset, SEEK_SET); 705 lseek (fd, offset, SEEK_SET);
533 res = read (fd, buf, count); 706 res = read (fd, buf, count);
534 lseek (fd, ooffset, SEEK_SET); 707 lseek (fd, ooffset, SEEK_SET);
535 pthread_mutex_unlock (&preadwritelock); 708 UNLOCK (preadwritelock);
536 709
537 return res; 710 return res;
538} 711}
539 712
540static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 713static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
541{ 714{
542 ssize_t res; 715 ssize_t res;
543 off_t ooffset; 716 off_t ooffset;
544 717
545 pthread_mutex_lock (&preadwritelock); 718 LOCK (preadwritelock);
546 ooffset = lseek (fd, 0, SEEK_CUR); 719 ooffset = lseek (fd, 0, SEEK_CUR);
547 lseek (fd, offset, SEEK_SET); 720 lseek (fd, offset, SEEK_SET);
548 res = write (fd, buf, count); 721 res = write (fd, buf, count);
549 lseek (fd, offset, SEEK_SET); 722 lseek (fd, offset, SEEK_SET);
550 pthread_mutex_unlock (&preadwritelock); 723 UNLOCK (preadwritelock);
551 724
552 return res; 725 return res;
553} 726}
554#endif 727#endif
555 728
556#if !HAVE_FDATASYNC 729#if !HAVE_FDATASYNC
557# define fdatasync fsync 730# define fdatasync fsync
558#endif 731#endif
559 732
560#if !HAVE_READAHEAD 733#if !HAVE_READAHEAD
561# define readahead aio_readahead 734# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
562 735
563static ssize_t readahead (int fd, off_t offset, size_t count) 736static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
564{ 737{
565 char readahead_buf[4096]; 738 dBUF;
566 739
567 while (count > 0) 740 while (count > 0)
568 { 741 {
569 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 742 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
570 743
571 pread (fd, readahead_buf, len, offset); 744 pread (fd, aio_buf, len, offset);
572 offset += len; 745 offset += len;
573 count -= len; 746 count -= len;
574 } 747 }
575 748
576 errno = 0; 749 errno = 0;
577} 750}
751
578#endif 752#endif
579 753
580#if !HAVE_READDIR_R 754#if !HAVE_READDIR_R
581# define readdir_r aio_readdir_r 755# define readdir_r aio_readdir_r
582 756
… …
585static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) 759static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
586{ 760{
587 struct dirent *e; 761 struct dirent *e;
588 int errorno; 762 int errorno;
589 763
590 pthread_mutex_lock (&readdirlock); 764 LOCK (readdirlock);
591 765
592 e = readdir (dirp); 766 e = readdir (dirp);
593 errorno = errno; 767 errorno = errno;
594 768
595 if (e) 769 if (e)
… …
598 strcpy (ent->d_name, e->d_name); 772 strcpy (ent->d_name, e->d_name);
599 } 773 }
600 else 774 else
601 *res = 0; 775 *res = 0;
602 776
603 pthread_mutex_unlock (&readdirlock); 777 UNLOCK (readdirlock);
604 778
605 errno = errorno; 779 errno = errorno;
606 return e ? 0 : -1; 780 return e ? 0 : -1;
607} 781}
608#endif 782#endif
609 783
610/* sendfile always needs emulation */ 784/* sendfile always needs emulation */
611static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 785static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
612{ 786{
613 ssize_t res; 787 ssize_t res;
614 788
615 if (!count) 789 if (!count)
616 return 0; 790 return 0;
… …
627 { 801 {
628 off_t sbytes; 802 off_t sbytes;
629 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 803 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
630 804
631 if (res < 0 && sbytes) 805 if (res < 0 && sbytes)
632 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 806 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
633 res = sbytes; 807 res = sbytes;
634 } 808 }
635 809
636# elif __hpux 810# elif __hpux
637 res = sendfile (ofd, ifd, offset, count, 0, 0); 811 res = sendfile (ofd, ifd, offset, count, 0, 0);
… …
665#endif 839#endif
666 ) 840 )
667 ) 841 )
668 { 842 {
669 /* emulate sendfile. this is a major pain in the ass */ 843 /* emulate sendfile. this is a major pain in the ass */
670 char buf[4096]; 844 dBUF;
845
671 res = 0; 846 res = 0;
672 847
673 while (count) 848 while (count)
674 { 849 {
675 ssize_t cnt; 850 ssize_t cnt;
676 851
677 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); 852 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
678 853
679 if (cnt <= 0) 854 if (cnt <= 0)
680 { 855 {
681 if (cnt && !res) res = -1; 856 if (cnt && !res) res = -1;
682 break; 857 break;
683 } 858 }
684 859
685 cnt = write (ofd, buf, cnt); 860 cnt = write (ofd, aio_buf, cnt);
686 861
687 if (cnt <= 0) 862 if (cnt <= 0)
688 { 863 {
689 if (cnt && !res) res = -1; 864 if (cnt && !res) res = -1;
690 break; 865 break;
… …
698 873
699 return res; 874 return res;
700} 875}
701 876
702/* read a full directory */ 877/* read a full directory */
703static int scandir_ (const char *path, void **namesp) 878static void scandir_ (aio_req req, worker *self)
704{ 879{
705 DIR *dirp = opendir (path); 880 DIR *dirp;
706 union 881 union
707 { 882 {
708 struct dirent d; 883 struct dirent d;
709 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; 884 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
710 } u; 885 } *u;
711 struct dirent *entp; 886 struct dirent *entp;
712 char *name, *names; 887 char *name, *names;
713 int memlen = 4096; 888 int memlen = 4096;
714 int memofs = 0; 889 int memofs = 0;
715 int res = 0; 890 int res = 0;
716 int errorno; 891 int errorno;
717 892
718 if (!dirp) 893 LOCK (wrklock);
719 return -1; 894 self->dirp = dirp = opendir (req->dataptr);
720 895 self->dbuf = u = malloc (sizeof (*u));
721 names = malloc (memlen); 896 req->data2ptr = names = malloc (memlen);
897 UNLOCK (wrklock);
722 898
899 if (dirp && u && names)
723 for (;;) 900 for (;;)
724 { 901 {
902 errno = 0;
725 errno = 0, readdir_r (dirp, &u.d, &entp); 903 readdir_r (dirp, &u->d, &entp);
726 904
727 if (!entp) 905 if (!entp)
728 break; 906 break;
729 907
730 name = entp->d_name; 908 name = entp->d_name;
731 909
732 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) 910 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
733 { 911 {
734 int len = strlen (name) + 1; 912 int len = strlen (name) + 1;
735 913
736 res++; 914 res++;
737 915
738 while (memofs + len > memlen) 916 while (memofs + len > memlen)
739 { 917 {
740 memlen *= 2; 918 memlen *= 2;
919 LOCK (wrklock);
741 names = realloc (names, memlen); 920 req->data2ptr = names = realloc (names, memlen);
921 UNLOCK (wrklock);
922
742 if (!names) 923 if (!names)
743 break; 924 break;
744 } 925 }
745 926
746 memcpy (names + memofs, name, len); 927 memcpy (names + memofs, name, len);
747 memofs += len; 928 memofs += len;
748 } 929 }
749 } 930 }
750 931
751 errorno = errno;
752 closedir (dirp);
753
754 if (errorno) 932 if (errno)
755 {
756 free (names);
757 errno = errorno;
758 res = -1; 933 res = -1;
759 } 934
760 935 req->result = res;
761 *namesp = (void *)names;
762 return res;
763} 936}
764 937
765/*****************************************************************************/ 938/*****************************************************************************/
766 939
767static void *aio_proc (void *thr_arg) 940static void *aio_proc (void *thr_arg)
768{ 941{
769 aio_req req; 942 aio_req req;
770 int type; 943 int type;
944 worker *self = (worker *)thr_arg;
771 945
772 do 946 do
773 { 947 {
774 pthread_mutex_lock (&reqlock); 948 LOCK (reqlock);
775 949
776 for (;;) 950 for (;;)
777 { 951 {
778 req = reqs; 952 self->req = req = reqq_shift (&req_queue);
779
780 if (reqs)
781 {
782 reqs = reqs->next;
783 if (!reqs) reqe = 0;
784 }
785 953
786 if (req) 954 if (req)
787 break; 955 break;
788 956
789 pthread_cond_wait (&reqwait, &reqlock); 957 pthread_cond_wait (&reqwait, &reqlock);
790 } 958 }
791 959
792 pthread_mutex_unlock (&reqlock); 960 --nready;
961
962 UNLOCK (reqlock);
793 963
794 errno = 0; /* strictly unnecessary */ 964 errno = 0; /* strictly unnecessary */
965 type = req->type; /* remember type for QUIT check */
795 966
796 if (!(req->flags & FLAG_CANCELLED)) 967 if (!(req->flags & FLAG_CANCELLED))
797 switch (type = req->type) /* remember type for QUIT check */ 968 switch (type)
798 { 969 {
799 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 970 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
800 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 971 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
801 972
802 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 973 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
803 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; 974 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
804 975
805 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 976 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
806 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 977 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
807 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 978 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
808 979
… …
814 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; 985 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
815 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 986 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
816 987
817 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 988 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
818 case REQ_FSYNC: req->result = fsync (req->fd); break; 989 case REQ_FSYNC: req->result = fsync (req->fd); break;
819 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; 990 case REQ_READDIR: scandir_ (req, self); break;
820 991
821 case REQ_SLEEP: 992 case REQ_BUSY:
822 { 993 {
823 struct timeval tv; 994 struct timeval tv;
824 995
825 tv.tv_sec = req->fd; 996 tv.tv_sec = req->fd;
826 tv.tv_usec = req->fd2; 997 tv.tv_usec = req->fd2;
… …
838 break; 1009 break;
839 } 1010 }
840 1011
841 req->errorno = errno; 1012 req->errorno = errno;
842 1013
843 pthread_mutex_lock (&reslock); 1014 LOCK (reslock);
844 1015
845 req->next = 0; 1016 ++npending;
846 1017
847 if (rese) 1018 if (!reqq_push (&res_queue, req))
848 {
849 rese->next = req;
850 rese = req;
851 }
852 else
853 {
854 rese = ress = req;
855
856 /* write a dummy byte to the pipe so fh becomes ready */ 1019 /* write a dummy byte to the pipe so fh becomes ready */
857 write (respipe [1], &respipe, 1); 1020 write (respipe [1], &respipe, 1);
858 }
859 1021
860 pthread_mutex_unlock (&reslock); 1022 self->req = 0;
1023 worker_clear (self);
1024
1025 UNLOCK (reslock);
861 } 1026 }
862 while (type != REQ_QUIT); 1027 while (type != REQ_QUIT);
863 1028
1029 LOCK (wrklock);
1030 worker_free (self);
1031 UNLOCK (wrklock);
1032
864 return 0; 1033 return 0;
865} 1034}
866 1035
867/*****************************************************************************/ 1036/*****************************************************************************/
868 1037
869static void atfork_prepare (void) 1038static void atfork_prepare (void)
870{ 1039{
871 pthread_mutex_lock (&reqlock); 1040 LOCK (wrklock);
872 pthread_mutex_lock (&reslock); 1041 LOCK (reqlock);
1042 LOCK (reslock);
873#if !HAVE_PREADWRITE 1043#if !HAVE_PREADWRITE
874 pthread_mutex_lock (&preadwritelock); 1044 LOCK (preadwritelock);
875#endif 1045#endif
876#if !HAVE_READDIR_R 1046#if !HAVE_READDIR_R
877 pthread_mutex_lock (&readdirlock); 1047 LOCK (readdirlock);
878#endif 1048#endif
879} 1049}
880 1050
881static void atfork_parent (void) 1051static void atfork_parent (void)
882{ 1052{
883#if !HAVE_READDIR_R 1053#if !HAVE_READDIR_R
884 pthread_mutex_unlock (&readdirlock); 1054 UNLOCK (readdirlock);
885#endif 1055#endif
886#if !HAVE_PREADWRITE 1056#if !HAVE_PREADWRITE
887 pthread_mutex_unlock (&preadwritelock); 1057 UNLOCK (preadwritelock);
888#endif 1058#endif
889 pthread_mutex_unlock (&reslock); 1059 UNLOCK (reslock);
890 pthread_mutex_unlock (&reqlock); 1060 UNLOCK (reqlock);
1061 UNLOCK (wrklock);
891} 1062}
892 1063
893static void atfork_child (void) 1064static void atfork_child (void)
894{ 1065{
895 aio_req prv; 1066 aio_req prv;
896 1067
1068 while (prv = reqq_shift (&req_queue))
1069 req_free (prv);
1070
1071 while (prv = reqq_shift (&res_queue))
1072 req_free (prv);
1073
1074 while (wrk_first.next != &wrk_first)
1075 {
1076 worker *wrk = wrk_first.next;
1077
1078 if (wrk->req)
1079 req_free (wrk->req);
1080
1081 worker_clear (wrk);
1082 worker_free (wrk);
1083 }
1084
897 started = 0; 1085 started = 0;
898 1086 nreqs = 0;
899 while (reqs)
900 {
901 prv = reqs;
902 reqs = prv->next;
903 req_free (prv);
904 }
905
906 reqs = reqe = 0;
907
908 while (ress)
909 {
910 prv = ress;
911 ress = prv->next;
912 req_free (prv);
913 }
914
915 ress = rese = 0;
916 1087
917 close (respipe [0]); 1088 close (respipe [0]);
918 close (respipe [1]); 1089 close (respipe [1]);
919 create_pipe (); 1090 create_pipe ();
920 1091
921 atfork_parent (); 1092 atfork_parent ();
922} 1093}
923 1094
924#define dREQ \ 1095#define dREQ \
925 aio_req req; \ 1096 aio_req req; \
1097 int req_pri = next_pri; \
1098 next_pri = DEFAULT_PRI + PRI_BIAS; \
926 \ 1099 \
927 if (SvOK (callback) && !SvROK (callback)) \ 1100 if (SvOK (callback) && !SvROK (callback)) \
928 croak ("callback must be undef or of reference type"); \ 1101 croak ("callback must be undef or of reference type"); \
929 \ 1102 \
930 Newz (0, req, 1, aio_cb); \ 1103 Newz (0, req, 1, aio_cb); \
931 if (!req) \ 1104 if (!req) \
932 croak ("out of memory during aio_req allocation"); \ 1105 croak ("out of memory during aio_req allocation"); \
933 \ 1106 \
934 req->callback = newSVsv (callback) 1107 req->callback = newSVsv (callback); \
1108 req->pri = req_pri
935 1109
936#define REQ_SEND \ 1110#define REQ_SEND \
937 req_send (req); \ 1111 req_send (req); \
938 \ 1112 \
939 if (GIMME_V != G_VOID) \ 1113 if (GIMME_V != G_VOID) \
… …
953 create_pipe (); 1127 create_pipe ();
954 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1128 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
955} 1129}
956 1130
957void 1131void
958min_parallel (nthreads) 1132min_parallel (int nthreads)
959 int nthreads
960 PROTOTYPE: $ 1133 PROTOTYPE: $
961 1134
962void 1135void
963max_parallel (nthreads) 1136max_parallel (int nthreads)
964 int nthreads
965 PROTOTYPE: $ 1137 PROTOTYPE: $
966 1138
967int 1139int
968max_outstanding (nreqs) 1140max_outstanding (int maxreqs)
969 int nreqs 1141 PROTOTYPE: $
970 PROTOTYPE: $
971 CODE: 1142 CODE:
972 RETVAL = max_outstanding; 1143 RETVAL = max_outstanding;
973 max_outstanding = nreqs; 1144 max_outstanding = maxreqs;
1145 OUTPUT:
1146 RETVAL
974 1147
975void 1148void
976aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1149aio_open (pathname,flags,mode,callback=&PL_sv_undef)
977 SV * pathname 1150 SV * pathname
978 int flags 1151 int flags
… …
1193 1366
1194 REQ_SEND; 1367 REQ_SEND;
1195} 1368}
1196 1369
1197void 1370void
1198aio_sleep (delay,callback=&PL_sv_undef) 1371aio_busy (delay,callback=&PL_sv_undef)
1199 double delay 1372 double delay
1200 SV * callback 1373 SV * callback
1201 PPCODE: 1374 PPCODE:
1202{ 1375{
1203 dREQ; 1376 dREQ;
1204 1377
1205 req->type = REQ_SLEEP; 1378 req->type = REQ_BUSY;
1206 req->fd = delay < 0. ? 0 : delay; 1379 req->fd = delay < 0. ? 0 : delay;
1207 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1380 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1208 1381
1209 REQ_SEND; 1382 REQ_SEND;
1210} 1383}
… …
1214 SV * callback 1387 SV * callback
1215 PROTOTYPE: ;$ 1388 PROTOTYPE: ;$
1216 PPCODE: 1389 PPCODE:
1217{ 1390{
1218 dREQ; 1391 dREQ;
1392
1219 req->type = REQ_GROUP; 1393 req->type = REQ_GROUP;
1220 req_send (req); 1394 req_send (req);
1395
1221 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1396 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1222} 1397}
1223 1398
1224void 1399void
1225aio_nop (callback=&PL_sv_undef) 1400aio_nop (callback=&PL_sv_undef)
… …
1230 1405
1231 req->type = REQ_NOP; 1406 req->type = REQ_NOP;
1232 1407
1233 REQ_SEND; 1408 REQ_SEND;
1234} 1409}
1410
1411int
1412aioreq_pri (int pri = 0)
1413 PROTOTYPE: ;$
1414 CODE:
1415 RETVAL = next_pri - PRI_BIAS;
1416 if (items > 0)
1417 {
1418 if (pri < PRI_MIN) pri = PRI_MIN;
1419 if (pri > PRI_MAX) pri = PRI_MAX;
1420 next_pri = pri + PRI_BIAS;
1421 }
1422 OUTPUT:
1423 RETVAL
1424
1425void
1426aioreq_nice (int nice = 0)
1427 CODE:
1428 nice = next_pri - nice;
1429 if (nice < PRI_MIN) nice = PRI_MIN;
1430 if (nice > PRI_MAX) nice = PRI_MAX;
1431 next_pri = nice + PRI_BIAS;
1235 1432
1236void 1433void
1237flush () 1434flush ()
1238 PROTOTYPE: 1435 PROTOTYPE:
1239 CODE: 1436 CODE:
1240 while (nreqs) 1437 while (nreqs)
1241 { 1438 {
1242 poll_wait (); 1439 poll_wait ();
1243 poll_cb (); 1440 poll_cb (0);
1244 } 1441 }
1245 1442
1246void 1443void
1247poll() 1444poll()
1248 PROTOTYPE: 1445 PROTOTYPE:
1249 CODE: 1446 CODE:
1250 if (nreqs) 1447 if (nreqs)
1251 { 1448 {
1252 poll_wait (); 1449 poll_wait ();
1253 poll_cb (); 1450 poll_cb (0);
1254 } 1451 }
1255 1452
1256int 1453int
1257poll_fileno() 1454poll_fileno()
1258 PROTOTYPE: 1455 PROTOTYPE:
… …
1263 1460
1264int 1461int
1265poll_cb(...) 1462poll_cb(...)
1266 PROTOTYPE: 1463 PROTOTYPE:
1267 CODE: 1464 CODE:
1268 RETVAL = poll_cb (); 1465 RETVAL = poll_cb (0);
1466 OUTPUT:
1467 RETVAL
1468
1469int
1470poll_some(int max = 0)
1471 PROTOTYPE: $
1472 CODE:
1473 RETVAL = poll_cb (max);
1269 OUTPUT: 1474 OUTPUT:
1270 RETVAL 1475 RETVAL
1271 1476
1272void 1477void
1273poll_wait() 1478poll_wait()
… …
1282 CODE: 1487 CODE:
1283 RETVAL = nreqs; 1488 RETVAL = nreqs;
1284 OUTPUT: 1489 OUTPUT:
1285 RETVAL 1490 RETVAL
1286 1491
1492int
1493nready()
1494 PROTOTYPE:
1495 CODE:
1496 if (WORDREAD_UNSAFE) LOCK (reqlock);
1497 RETVAL = nready;
1498 if (WORDREAD_UNSAFE) UNLOCK (reqlock);
1499 OUTPUT:
1500 RETVAL
1501
1502int
1503npending()
1504 PROTOTYPE:
1505 CODE:
1506 if (WORDREAD_UNSAFE) LOCK (reslock);
1507 RETVAL = npending;
1508 if (WORDREAD_UNSAFE) UNLOCK (reslock);
1509 OUTPUT:
1510 RETVAL
1511
1287PROTOTYPES: DISABLE 1512PROTOTYPES: DISABLE
1288 1513
1289MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1514MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1290 1515
1291void 1516void
1292cancel (aio_req_ornot req) 1517cancel (aio_req_ornot req)
1293 PROTOTYPE:
1294 CODE: 1518 CODE:
1295 req_cancel (req); 1519 req_cancel (req);
1296 1520
1297void 1521void
1298cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1522cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
… …
1334 } 1558 }
1335 } 1559 }
1336} 1560}
1337 1561
1338void 1562void
1563cancel_subs (aio_req_ornot req)
1564 CODE:
1565 req_cancel_subs (req);
1566
1567void
1339result (aio_req grp, ...) 1568result (aio_req grp, ...)
1340 CODE: 1569 CODE:
1341{ 1570{
1342 int i; 1571 int i;
1572 AV *av;
1573
1574 grp->errorno = errno;
1575
1343 AV *av = newAV (); 1576 av = newAV ();
1344 1577
1345 for (i = 1; i < items; ++i ) 1578 for (i = 1; i < items; ++i )
1346 av_push (av, newSVsv (ST (i))); 1579 av_push (av, newSVsv (ST (i)));
1347 1580
1348 SvREFCNT_dec (grp->data); 1581 SvREFCNT_dec (grp->data);
1349 grp->data = (SV *)av; 1582 grp->data = (SV *)av;
1350} 1583}
1351 1584
1352void 1585void
1586errno (aio_req grp, int errorno = errno)
1587 CODE:
1588 grp->errorno = errorno;
1589
1590void
1353feed_limit (aio_req grp, int limit) 1591limit (aio_req grp, int limit)
1354 CODE: 1592 CODE:
1355 grp->fd2 = limit; 1593 grp->fd2 = limit;
1356 aio_grp_feed (grp); 1594 aio_grp_feed (grp);
1357 1595
1358void 1596void

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