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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.55 by root, Mon Oct 23 00:47:29 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
88 unsigned char cancelled; 124 unsigned char flags;
125 unsigned char pri;
126
127 SV *self; /* the perl counterpart of this request, if any */
128 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
89} aio_cb; 129} aio_cb;
130
131enum {
132 FLAG_CANCELLED = 0x01,
133};
90 134
91typedef aio_cb *aio_req; 135typedef aio_cb *aio_req;
92typedef aio_cb *aio_req_ornot; 136typedef aio_cb *aio_req_ornot;
93 137
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
94static int started, wanted; 149static unsigned int started, wanted;
95static volatile int nreqs; 150static volatile unsigned int nreqs, nready, npending;
96static int max_outstanding = 1<<30; 151static volatile unsigned int max_outstanding = 0xffffffff;
97static int respipe [2]; 152static int respipe [2];
98 153
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
99static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 203static pthread_mutex_t reslock = AIO_MUTEX_INIT;
100static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 204static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
101static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 205static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102 206
103static volatile aio_req reqs, reqe; /* queue start, queue end */ 207/*
104static 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;
105 216
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);
106static void req_invoke (aio_req req); 262static void req_invoke (aio_req req);
107static void req_free (aio_req req); 263static void req_free (aio_req req);
264static void req_cancel (aio_req req);
108 265
109/* must be called at most once */ 266/* must be called at most once */
110static SV *req_sv (aio_req req, const char *klass) 267static SV *req_sv (aio_req req, const char *klass)
111{ 268{
112 if (!req->self) 269 if (!req->self)
… …
130 return mg ? (aio_req)mg->mg_ptr : 0; 287 return mg ? (aio_req)mg->mg_ptr : 0;
131} 288}
132 289
133static void aio_grp_feed (aio_req grp) 290static void aio_grp_feed (aio_req grp)
134{ 291{
135 while (grp->length < grp->fd2) 292 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
136 { 293 {
137 int old_len = grp->length; 294 int old_len = grp->length;
138 295
139 if (grp->fh2 && SvOK (grp->fh2)) 296 if (grp->fh2 && SvOK (grp->fh2))
140 { 297 {
… …
143 ENTER; 300 ENTER;
144 SAVETMPS; 301 SAVETMPS;
145 PUSHMARK (SP); 302 PUSHMARK (SP);
146 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 303 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
147 PUTBACK; 304 PUTBACK;
148 call_sv (grp->fh2, G_VOID | G_EVAL); 305 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
149 SPAGAIN; 306 SPAGAIN;
150 FREETMPS; 307 FREETMPS;
151 LEAVE; 308 LEAVE;
152 } 309 }
153 310
… …
176 } 333 }
177} 334}
178 335
179static void poll_wait () 336static void poll_wait ()
180{ 337{
181 if (nreqs && !ress)
182 {
183 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
184 FD_ZERO(&rfd); 350 FD_ZERO(&rfd);
185 FD_SET(respipe [0], &rfd); 351 FD_SET(respipe [0], &rfd);
186 352
187 select (respipe [0] + 1, &rfd, 0, 0, 0); 353 select (respipe [0] + 1, &rfd, 0, 0, 0);
188 } 354 }
189} 355}
190 356
191static void req_invoke (aio_req req) 357static void req_invoke (aio_req req)
192{ 358{
193 dSP; 359 dSP;
194 int errorno = errno;
195 360
196 if (req->cancelled || !SvOK (req->callback)) 361 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
197 return; 362 {
198
199 errno = req->errorno;
200
201 ENTER; 363 ENTER;
202 SAVETMPS; 364 SAVETMPS;
203 PUSHMARK (SP); 365 PUSHMARK (SP);
204 EXTEND (SP, 1); 366 EXTEND (SP, 1);
205 367
206 switch (req->type) 368 switch (req->type)
207 {
208 case REQ_READDIR:
209 { 369 {
210 SV *rv = &PL_sv_undef; 370 case REQ_READDIR:
211
212 if (req->result >= 0)
213 { 371 {
214 char *buf = req->data2ptr; 372 SV *rv = &PL_sv_undef;
215 AV *av = newAV ();
216 373
217 while (req->result) 374 if (req->result >= 0)
218 { 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 {
219 SV *sv = newSVpv (buf, 0); 384 SV *sv = newSVpv (buf, 0);
220 385
221 av_push (av, sv); 386 av_store (av, i, sv);
222 buf += SvCUR (sv) + 1; 387 buf += SvCUR (sv) + 1;
223 req->result--; 388 }
389
390 rv = sv_2mortal (newRV_noinc ((SV *)av));
224 } 391 }
225 392
226 rv = sv_2mortal (newRV_noinc ((SV *)av)); 393 PUSHs (rv);
227 } 394 }
395 break;
228 396
229 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;
230 } 435 }
231 break;
232 436
233 case REQ_OPEN: 437 errno = req->errorno;
234 {
235 /* convert fd to fh */
236 SV *fh;
237 438
238 PUSHs (sv_2mortal (newSViv (req->result)));
239 PUTBACK; 439 PUTBACK;
240 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
241 SPAGAIN;
242
243 fh = SvREFCNT_inc (POPs);
244
245 PUSHMARK (SP);
246 XPUSHs (sv_2mortal (fh));
247 }
248 break;
249
250 case REQ_GROUP:
251 req->fd = 2; /* mark group as finished */
252
253 if (req->data)
254 {
255 int i;
256 AV *av = (AV *)req->data;
257
258 EXTEND (SP, AvFILL (av) + 1);
259 for (i = 0; i <= AvFILL (av); ++i)
260 PUSHs (*av_fetch (av, i, 0));
261 }
262 break;
263
264 case REQ_NOP:
265 case REQ_SLEEP:
266 break;
267
268 default:
269 PUSHs (sv_2mortal (newSViv (req->result)));
270 break;
271 }
272
273
274 PUTBACK;
275 call_sv (req->callback, G_VOID | G_EVAL); 440 call_sv (req->callback, G_VOID | G_EVAL);
276 SPAGAIN; 441 SPAGAIN;
277 442
278 FREETMPS; 443 FREETMPS;
279 LEAVE; 444 LEAVE;
280
281 errno = errorno;
282
283 if (SvTRUE (ERRSV))
284 { 445 }
285 req_free (req);
286 croak (0);
287 }
288}
289 446
290static void req_free (aio_req req)
291{
292 if (req->grp) 447 if (req->grp)
293 { 448 {
294 aio_req grp = req->grp; 449 aio_req grp = req->grp;
295 450
296 /* unlink request */ 451 /* unlink request */
… …
301 grp->grp_first = req->grp_next; 456 grp->grp_first = req->grp_next;
302 457
303 aio_grp_dec (grp); 458 aio_grp_dec (grp);
304 } 459 }
305 460
461 if (SvTRUE (ERRSV))
462 {
463 req_free (req);
464 croak (0);
465 }
466}
467
468static void req_free (aio_req req)
469{
306 if (req->self) 470 if (req->self)
307 { 471 {
308 sv_unmagic (req->self, PERL_MAGIC_ext); 472 sv_unmagic (req->self, PERL_MAGIC_ext);
309 SvREFCNT_dec (req->self); 473 SvREFCNT_dec (req->self);
310 } 474 }
… …
313 SvREFCNT_dec (req->fh); 477 SvREFCNT_dec (req->fh);
314 SvREFCNT_dec (req->fh2); 478 SvREFCNT_dec (req->fh2);
315 SvREFCNT_dec (req->callback); 479 SvREFCNT_dec (req->callback);
316 Safefree (req->statdata); 480 Safefree (req->statdata);
317 481
318 if (req->type == REQ_READDIR && req->result >= 0) 482 if (req->type == REQ_READDIR)
319 free (req->data2ptr); 483 free (req->data2ptr);
320 484
321 Safefree (req); 485 Safefree (req);
322} 486}
323 487
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
324static void req_cancel (aio_req req) 502static void req_cancel (aio_req req)
325{ 503{
326 req->cancelled = 1; 504 req->flags |= FLAG_CANCELLED;
327 505
328 if (req->type == REQ_GROUP) 506 req_cancel_subs (req);
329 {
330 aio_req sub;
331
332 for (sub = req->grp_first; sub; sub = sub->grp_next)
333 req_cancel (sub);
334 }
335} 507}
336 508
337static int poll_cb () 509static int poll_cb (int max)
338{ 510{
339 dSP; 511 dSP;
340 int count = 0; 512 int count = 0;
341 int do_croak = 0; 513 int do_croak = 0;
342 aio_req req; 514 aio_req req;
343 515
344 for (;;) 516 for (;;)
345 { 517 {
346 pthread_mutex_lock (&reslock); 518 while (max <= 0 || count < max)
347 req = ress;
348
349 if (req)
350 { 519 {
351 ress = req->next; 520 LOCK (reslock);
521 req = reqq_shift (&res_queue);
352 522
353 if (!ress) 523 if (req)
354 { 524 {
525 --npending;
526
527 if (!res_queue.size)
528 {
355 /* read any signals sent by the worker threads */ 529 /* read any signals sent by the worker threads */
356 char buf [32]; 530 char buf [32];
357 while (read (respipe [0], buf, 32) == 32) 531 while (read (respipe [0], buf, 32) == 32)
532 ;
358 ; 533 }
359
360 rese = 0;
361 } 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);
362 } 571 }
363 572
364 pthread_mutex_unlock (&reslock); 573 if (nreqs <= max_outstanding)
365
366 if (!req)
367 break; 574 break;
368 575
369 --nreqs; 576 poll_wait ();
370 577
371 if (req->type == REQ_QUIT) 578 max = 0;
372 started--;
373 else if (req->type == REQ_GROUP && req->length)
374 {
375 req->fd = 1; /* mark request as delayed */
376 continue;
377 }
378 else
379 {
380 if (req->type == REQ_READ)
381 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
382
383 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
384 SvREADONLY_off (req->data);
385
386 if (req->statdata)
387 {
388 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
389 PL_laststatval = req->result;
390 PL_statcache = *(req->statdata);
391 }
392
393 req_invoke (req);
394
395 count++;
396 }
397
398 req_free (req);
399 } 579 }
400 580
401 return count; 581 return count;
402} 582}
403 583
404static void *aio_proc(void *arg); 584static void *aio_proc(void *arg);
405 585
406static void start_thread (void) 586static void start_thread (void)
407{ 587{
408 sigset_t fullsigset, oldsigset; 588 sigset_t fullsigset, oldsigset;
409 pthread_t tid;
410 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");
411 595
412 pthread_attr_init (&attr); 596 pthread_attr_init (&attr);
413 pthread_attr_setstacksize (&attr, STACKSIZE); 597 pthread_attr_setstacksize (&attr, STACKSIZE);
414 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); 598 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
415 599
416 sigfillset (&fullsigset); 600 sigfillset (&fullsigset);
601
602 LOCK (wrklock);
417 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); 603 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
418 604
419 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;
420 started++; 611 ++started;
612 }
613 else
614 free (wrk);
421 615
422 sigprocmask (SIG_SETMASK, &oldsigset, 0); 616 sigprocmask (SIG_SETMASK, &oldsigset, 0);
617 UNLOCK (wrklock);
423} 618}
424 619
425static void req_send (aio_req req) 620static void req_send (aio_req req)
426{ 621{
427 while (started < wanted && nreqs >= started) 622 while (started < wanted && nreqs >= started)
428 start_thread (); 623 start_thread ();
429 624
430 ++nreqs; 625 ++nreqs;
431 626
432 pthread_mutex_lock (&reqlock); 627 LOCK (reqlock);
433 628 ++nready;
434 req->next = 0; 629 reqq_push (&req_queue, req);
435
436 if (reqe)
437 {
438 reqe->next = req;
439 reqe = req;
440 }
441 else
442 reqe = reqs = req;
443
444 pthread_cond_signal (&reqwait); 630 pthread_cond_signal (&reqwait);
445 pthread_mutex_unlock (&reqlock); 631 UNLOCK (reqlock);
446
447 if (nreqs > max_outstanding)
448 for (;;)
449 {
450 poll_cb ();
451
452 if (nreqs <= max_outstanding)
453 break;
454
455 poll_wait ();
456 }
457} 632}
458 633
459static void end_thread (void) 634static void end_thread (void)
460{ 635{
461 aio_req req; 636 aio_req req;
637
462 Newz (0, req, 1, aio_cb); 638 Newz (0, req, 1, aio_cb);
639
463 req->type = REQ_QUIT; 640 req->type = REQ_QUIT;
641 req->pri = PRI_MAX + PRI_BIAS;
464 642
465 req_send (req); 643 req_send (req);
466} 644}
467 645
468static void min_parallel (int nthreads) 646static void min_parallel (int nthreads)
… …
485 } 663 }
486 664
487 while (started > wanted) 665 while (started > wanted)
488 { 666 {
489 poll_wait (); 667 poll_wait ();
490 poll_cb (); 668 poll_cb (0);
491 } 669 }
492} 670}
493 671
494static void create_pipe () 672static void create_pipe ()
495{ 673{
… …
520static 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)
521{ 699{
522 ssize_t res; 700 ssize_t res;
523 off_t ooffset; 701 off_t ooffset;
524 702
525 pthread_mutex_lock (&preadwritelock); 703 LOCK (preadwritelock);
526 ooffset = lseek (fd, 0, SEEK_CUR); 704 ooffset = lseek (fd, 0, SEEK_CUR);
527 lseek (fd, offset, SEEK_SET); 705 lseek (fd, offset, SEEK_SET);
528 res = read (fd, buf, count); 706 res = read (fd, buf, count);
529 lseek (fd, ooffset, SEEK_SET); 707 lseek (fd, ooffset, SEEK_SET);
530 pthread_mutex_unlock (&preadwritelock); 708 UNLOCK (preadwritelock);
531 709
532 return res; 710 return res;
533} 711}
534 712
535static 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)
536{ 714{
537 ssize_t res; 715 ssize_t res;
538 off_t ooffset; 716 off_t ooffset;
539 717
540 pthread_mutex_lock (&preadwritelock); 718 LOCK (preadwritelock);
541 ooffset = lseek (fd, 0, SEEK_CUR); 719 ooffset = lseek (fd, 0, SEEK_CUR);
542 lseek (fd, offset, SEEK_SET); 720 lseek (fd, offset, SEEK_SET);
543 res = write (fd, buf, count); 721 res = write (fd, buf, count);
544 lseek (fd, offset, SEEK_SET); 722 lseek (fd, offset, SEEK_SET);
545 pthread_mutex_unlock (&preadwritelock); 723 UNLOCK (preadwritelock);
546 724
547 return res; 725 return res;
548} 726}
549#endif 727#endif
550 728
551#if !HAVE_FDATASYNC 729#if !HAVE_FDATASYNC
552# define fdatasync fsync 730# define fdatasync fsync
553#endif 731#endif
554 732
555#if !HAVE_READAHEAD 733#if !HAVE_READAHEAD
556# define readahead aio_readahead 734# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
557 735
558static 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)
559{ 737{
560 char readahead_buf[4096]; 738 dBUF;
561 739
562 while (count > 0) 740 while (count > 0)
563 { 741 {
564 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 742 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
565 743
566 pread (fd, readahead_buf, len, offset); 744 pread (fd, aio_buf, len, offset);
567 offset += len; 745 offset += len;
568 count -= len; 746 count -= len;
569 } 747 }
570 748
571 errno = 0; 749 errno = 0;
572} 750}
751
573#endif 752#endif
574 753
575#if !HAVE_READDIR_R 754#if !HAVE_READDIR_R
576# define readdir_r aio_readdir_r 755# define readdir_r aio_readdir_r
577 756
… …
580static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) 759static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
581{ 760{
582 struct dirent *e; 761 struct dirent *e;
583 int errorno; 762 int errorno;
584 763
585 pthread_mutex_lock (&readdirlock); 764 LOCK (readdirlock);
586 765
587 e = readdir (dirp); 766 e = readdir (dirp);
588 errorno = errno; 767 errorno = errno;
589 768
590 if (e) 769 if (e)
… …
593 strcpy (ent->d_name, e->d_name); 772 strcpy (ent->d_name, e->d_name);
594 } 773 }
595 else 774 else
596 *res = 0; 775 *res = 0;
597 776
598 pthread_mutex_unlock (&readdirlock); 777 UNLOCK (readdirlock);
599 778
600 errno = errorno; 779 errno = errorno;
601 return e ? 0 : -1; 780 return e ? 0 : -1;
602} 781}
603#endif 782#endif
604 783
605/* sendfile always needs emulation */ 784/* sendfile always needs emulation */
606static 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)
607{ 786{
608 ssize_t res; 787 ssize_t res;
609 788
610 if (!count) 789 if (!count)
611 return 0; 790 return 0;
… …
622 { 801 {
623 off_t sbytes; 802 off_t sbytes;
624 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 803 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
625 804
626 if (res < 0 && sbytes) 805 if (res < 0 && sbytes)
627 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 806 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
628 res = sbytes; 807 res = sbytes;
629 } 808 }
630 809
631# elif __hpux 810# elif __hpux
632 res = sendfile (ofd, ifd, offset, count, 0, 0); 811 res = sendfile (ofd, ifd, offset, count, 0, 0);
… …
660#endif 839#endif
661 ) 840 )
662 ) 841 )
663 { 842 {
664 /* emulate sendfile. this is a major pain in the ass */ 843 /* emulate sendfile. this is a major pain in the ass */
665 char buf[4096]; 844 dBUF;
845
666 res = 0; 846 res = 0;
667 847
668 while (count) 848 while (count)
669 { 849 {
670 ssize_t cnt; 850 ssize_t cnt;
671 851
672 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); 852 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
673 853
674 if (cnt <= 0) 854 if (cnt <= 0)
675 { 855 {
676 if (cnt && !res) res = -1; 856 if (cnt && !res) res = -1;
677 break; 857 break;
678 } 858 }
679 859
680 cnt = write (ofd, buf, cnt); 860 cnt = write (ofd, aio_buf, cnt);
681 861
682 if (cnt <= 0) 862 if (cnt <= 0)
683 { 863 {
684 if (cnt && !res) res = -1; 864 if (cnt && !res) res = -1;
685 break; 865 break;
… …
693 873
694 return res; 874 return res;
695} 875}
696 876
697/* read a full directory */ 877/* read a full directory */
698static int scandir_ (const char *path, void **namesp) 878static void scandir_ (aio_req req, worker *self)
699{ 879{
700 DIR *dirp = opendir (path); 880 DIR *dirp;
701 union 881 union
702 { 882 {
703 struct dirent d; 883 struct dirent d;
704 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; 884 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
705 } u; 885 } *u;
706 struct dirent *entp; 886 struct dirent *entp;
707 char *name, *names; 887 char *name, *names;
708 int memlen = 4096; 888 int memlen = 4096;
709 int memofs = 0; 889 int memofs = 0;
710 int res = 0; 890 int res = 0;
711 int errorno; 891 int errorno;
712 892
713 if (!dirp) 893 LOCK (wrklock);
714 return -1; 894 self->dirp = dirp = opendir (req->dataptr);
715 895 self->dbuf = u = malloc (sizeof (*u));
716 names = malloc (memlen); 896 req->data2ptr = names = malloc (memlen);
897 UNLOCK (wrklock);
717 898
899 if (dirp && u && names)
718 for (;;) 900 for (;;)
719 { 901 {
902 errno = 0;
720 errno = 0, readdir_r (dirp, &u.d, &entp); 903 readdir_r (dirp, &u->d, &entp);
721 904
722 if (!entp) 905 if (!entp)
723 break; 906 break;
724 907
725 name = entp->d_name; 908 name = entp->d_name;
726 909
727 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) 910 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
728 { 911 {
729 int len = strlen (name) + 1; 912 int len = strlen (name) + 1;
730 913
731 res++; 914 res++;
732 915
733 while (memofs + len > memlen) 916 while (memofs + len > memlen)
734 { 917 {
735 memlen *= 2; 918 memlen *= 2;
919 LOCK (wrklock);
736 names = realloc (names, memlen); 920 req->data2ptr = names = realloc (names, memlen);
921 UNLOCK (wrklock);
922
737 if (!names) 923 if (!names)
738 break; 924 break;
739 } 925 }
740 926
741 memcpy (names + memofs, name, len); 927 memcpy (names + memofs, name, len);
742 memofs += len; 928 memofs += len;
743 } 929 }
744 } 930 }
745 931
746 errorno = errno;
747 closedir (dirp);
748
749 if (errorno) 932 if (errno)
750 {
751 free (names);
752 errno = errorno;
753 res = -1; 933 res = -1;
754 } 934
755 935 req->result = res;
756 *namesp = (void *)names;
757 return res;
758} 936}
759 937
760/*****************************************************************************/ 938/*****************************************************************************/
761 939
762static void *aio_proc (void *thr_arg) 940static void *aio_proc (void *thr_arg)
763{ 941{
764 aio_req req; 942 aio_req req;
765 int type; 943 int type;
944 worker *self = (worker *)thr_arg;
766 945
767 do 946 do
768 { 947 {
769 pthread_mutex_lock (&reqlock); 948 LOCK (reqlock);
770 949
771 for (;;) 950 for (;;)
772 { 951 {
773 req = reqs; 952 self->req = req = reqq_shift (&req_queue);
774
775 if (reqs)
776 {
777 reqs = reqs->next;
778 if (!reqs) reqe = 0;
779 }
780 953
781 if (req) 954 if (req)
782 break; 955 break;
783 956
784 pthread_cond_wait (&reqwait, &reqlock); 957 pthread_cond_wait (&reqwait, &reqlock);
785 } 958 }
786 959
787 pthread_mutex_unlock (&reqlock); 960 --nready;
961
962 UNLOCK (reqlock);
788 963
789 errno = 0; /* strictly unnecessary */ 964 errno = 0; /* strictly unnecessary */
790
791 if (!req->cancelled)
792 switch (type = req->type) /* remember type for QUIT check */ 965 type = req->type; /* remember type for QUIT check */
966
967 if (!(req->flags & FLAG_CANCELLED))
968 switch (type)
793 { 969 {
794 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;
795 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;
796 972
797 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;
798 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;
799 975
800 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 976 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
801 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 977 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
802 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 978 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
803 979
… …
809 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; 985 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
810 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 986 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
811 987
812 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 988 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
813 case REQ_FSYNC: req->result = fsync (req->fd); break; 989 case REQ_FSYNC: req->result = fsync (req->fd); break;
814 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; 990 case REQ_READDIR: scandir_ (req, self); break;
815 991
816 case REQ_SLEEP: 992 case REQ_BUSY:
817 { 993 {
818 struct timeval tv; 994 struct timeval tv;
819 995
820 tv.tv_sec = req->fd; 996 tv.tv_sec = req->fd;
821 tv.tv_usec = req->fd2; 997 tv.tv_usec = req->fd2;
… …
833 break; 1009 break;
834 } 1010 }
835 1011
836 req->errorno = errno; 1012 req->errorno = errno;
837 1013
838 pthread_mutex_lock (&reslock); 1014 LOCK (reslock);
839 1015
840 req->next = 0; 1016 ++npending;
841 1017
842 if (rese) 1018 if (!reqq_push (&res_queue, req))
843 {
844 rese->next = req;
845 rese = req;
846 }
847 else
848 {
849 rese = ress = req;
850
851 /* write a dummy byte to the pipe so fh becomes ready */ 1019 /* write a dummy byte to the pipe so fh becomes ready */
852 write (respipe [1], &respipe, 1); 1020 write (respipe [1], &respipe, 1);
853 }
854 1021
855 pthread_mutex_unlock (&reslock); 1022 self->req = 0;
1023 worker_clear (self);
1024
1025 UNLOCK (reslock);
856 } 1026 }
857 while (type != REQ_QUIT); 1027 while (type != REQ_QUIT);
858 1028
1029 LOCK (wrklock);
1030 worker_free (self);
1031 UNLOCK (wrklock);
1032
859 return 0; 1033 return 0;
860} 1034}
861 1035
862/*****************************************************************************/ 1036/*****************************************************************************/
863 1037
864static void atfork_prepare (void) 1038static void atfork_prepare (void)
865{ 1039{
866 pthread_mutex_lock (&reqlock); 1040 LOCK (wrklock);
867 pthread_mutex_lock (&reslock); 1041 LOCK (reqlock);
1042 LOCK (reslock);
868#if !HAVE_PREADWRITE 1043#if !HAVE_PREADWRITE
869 pthread_mutex_lock (&preadwritelock); 1044 LOCK (preadwritelock);
870#endif 1045#endif
871#if !HAVE_READDIR_R 1046#if !HAVE_READDIR_R
872 pthread_mutex_lock (&readdirlock); 1047 LOCK (readdirlock);
873#endif 1048#endif
874} 1049}
875 1050
876static void atfork_parent (void) 1051static void atfork_parent (void)
877{ 1052{
878#if !HAVE_READDIR_R 1053#if !HAVE_READDIR_R
879 pthread_mutex_unlock (&readdirlock); 1054 UNLOCK (readdirlock);
880#endif 1055#endif
881#if !HAVE_PREADWRITE 1056#if !HAVE_PREADWRITE
882 pthread_mutex_unlock (&preadwritelock); 1057 UNLOCK (preadwritelock);
883#endif 1058#endif
884 pthread_mutex_unlock (&reslock); 1059 UNLOCK (reslock);
885 pthread_mutex_unlock (&reqlock); 1060 UNLOCK (reqlock);
1061 UNLOCK (wrklock);
886} 1062}
887 1063
888static void atfork_child (void) 1064static void atfork_child (void)
889{ 1065{
890 aio_req prv; 1066 aio_req prv;
891 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
892 started = 0; 1085 started = 0;
893 1086 nreqs = 0;
894 while (reqs)
895 {
896 prv = reqs;
897 reqs = prv->next;
898 req_free (prv);
899 }
900
901 reqs = reqe = 0;
902
903 while (ress)
904 {
905 prv = ress;
906 ress = prv->next;
907 req_free (prv);
908 }
909
910 ress = rese = 0;
911 1087
912 close (respipe [0]); 1088 close (respipe [0]);
913 close (respipe [1]); 1089 close (respipe [1]);
914 create_pipe (); 1090 create_pipe ();
915 1091
916 atfork_parent (); 1092 atfork_parent ();
917} 1093}
918 1094
919#define dREQ \ 1095#define dREQ \
920 aio_req req; \ 1096 aio_req req; \
1097 int req_pri = next_pri; \
1098 next_pri = DEFAULT_PRI + PRI_BIAS; \
921 \ 1099 \
922 if (SvOK (callback) && !SvROK (callback)) \ 1100 if (SvOK (callback) && !SvROK (callback)) \
923 croak ("callback must be undef or of reference type"); \ 1101 croak ("callback must be undef or of reference type"); \
924 \ 1102 \
925 Newz (0, req, 1, aio_cb); \ 1103 Newz (0, req, 1, aio_cb); \
926 if (!req) \ 1104 if (!req) \
927 croak ("out of memory during aio_req allocation"); \ 1105 croak ("out of memory during aio_req allocation"); \
928 \ 1106 \
929 req->callback = newSVsv (callback) 1107 req->callback = newSVsv (callback); \
1108 req->pri = req_pri
930 1109
931#define REQ_SEND \ 1110#define REQ_SEND \
932 req_send (req); \ 1111 req_send (req); \
933 \ 1112 \
934 if (GIMME_V != G_VOID) \ 1113 if (GIMME_V != G_VOID) \
… …
948 create_pipe (); 1127 create_pipe ();
949 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1128 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
950} 1129}
951 1130
952void 1131void
953min_parallel (nthreads) 1132min_parallel (int nthreads)
954 int nthreads
955 PROTOTYPE: $ 1133 PROTOTYPE: $
956 1134
957void 1135void
958max_parallel (nthreads) 1136max_parallel (int nthreads)
959 int nthreads
960 PROTOTYPE: $ 1137 PROTOTYPE: $
961 1138
962int 1139int
963max_outstanding (nreqs) 1140max_outstanding (int maxreqs)
964 int nreqs 1141 PROTOTYPE: $
965 PROTOTYPE: $
966 CODE: 1142 CODE:
967 RETVAL = max_outstanding; 1143 RETVAL = max_outstanding;
968 max_outstanding = nreqs; 1144 max_outstanding = maxreqs;
1145 OUTPUT:
1146 RETVAL
969 1147
970void 1148void
971aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1149aio_open (pathname,flags,mode,callback=&PL_sv_undef)
972 SV * pathname 1150 SV * pathname
973 int flags 1151 int flags
… …
1188 1366
1189 REQ_SEND; 1367 REQ_SEND;
1190} 1368}
1191 1369
1192void 1370void
1193aio_sleep (delay,callback=&PL_sv_undef) 1371aio_busy (delay,callback=&PL_sv_undef)
1194 double delay 1372 double delay
1195 SV * callback 1373 SV * callback
1196 PPCODE: 1374 PPCODE:
1197{ 1375{
1198 dREQ; 1376 dREQ;
1199 1377
1200 req->type = REQ_SLEEP; 1378 req->type = REQ_BUSY;
1201 req->fd = delay < 0. ? 0 : delay; 1379 req->fd = delay < 0. ? 0 : delay;
1202 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1380 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1203 1381
1204 REQ_SEND; 1382 REQ_SEND;
1205} 1383}
… …
1209 SV * callback 1387 SV * callback
1210 PROTOTYPE: ;$ 1388 PROTOTYPE: ;$
1211 PPCODE: 1389 PPCODE:
1212{ 1390{
1213 dREQ; 1391 dREQ;
1392
1214 req->type = REQ_GROUP; 1393 req->type = REQ_GROUP;
1215 req_send (req); 1394 req_send (req);
1395
1216 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1396 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1217} 1397}
1218 1398
1219void 1399void
1220aio_nop (callback=&PL_sv_undef) 1400aio_nop (callback=&PL_sv_undef)
… …
1225 1405
1226 req->type = REQ_NOP; 1406 req->type = REQ_NOP;
1227 1407
1228 REQ_SEND; 1408 REQ_SEND;
1229} 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;
1230 1432
1231void 1433void
1232flush () 1434flush ()
1233 PROTOTYPE: 1435 PROTOTYPE:
1234 CODE: 1436 CODE:
1235 while (nreqs) 1437 while (nreqs)
1236 { 1438 {
1237 poll_wait (); 1439 poll_wait ();
1238 poll_cb (); 1440 poll_cb (0);
1239 } 1441 }
1240 1442
1241void 1443void
1242poll() 1444poll()
1243 PROTOTYPE: 1445 PROTOTYPE:
1244 CODE: 1446 CODE:
1245 if (nreqs) 1447 if (nreqs)
1246 { 1448 {
1247 poll_wait (); 1449 poll_wait ();
1248 poll_cb (); 1450 poll_cb (0);
1249 } 1451 }
1250 1452
1251int 1453int
1252poll_fileno() 1454poll_fileno()
1253 PROTOTYPE: 1455 PROTOTYPE:
… …
1258 1460
1259int 1461int
1260poll_cb(...) 1462poll_cb(...)
1261 PROTOTYPE: 1463 PROTOTYPE:
1262 CODE: 1464 CODE:
1263 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);
1264 OUTPUT: 1474 OUTPUT:
1265 RETVAL 1475 RETVAL
1266 1476
1267void 1477void
1268poll_wait() 1478poll_wait()
… …
1277 CODE: 1487 CODE:
1278 RETVAL = nreqs; 1488 RETVAL = nreqs;
1279 OUTPUT: 1489 OUTPUT:
1280 RETVAL 1490 RETVAL
1281 1491
1282PROTOTYPES: DISABLE 1492int
1283 1493nready()
1284MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1285
1286void
1287cancel (aio_req_ornot req)
1288 PROTOTYPE: 1494 PROTOTYPE:
1289 CODE: 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
1512PROTOTYPES: DISABLE
1513
1514MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1515
1516void
1517cancel (aio_req_ornot req)
1518 CODE:
1290 req_cancel (req); 1519 req_cancel (req);
1520
1521void
1522cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1523 CODE:
1524 SvREFCNT_dec (req->callback);
1525 req->callback = newSVsv (callback);
1291 1526
1292MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1527MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1293 1528
1294void 1529void
1295add (aio_req grp, ...) 1530add (aio_req grp, ...)
… …
1323 } 1558 }
1324 } 1559 }
1325} 1560}
1326 1561
1327void 1562void
1563cancel_subs (aio_req_ornot req)
1564 CODE:
1565 req_cancel_subs (req);
1566
1567void
1328result (aio_req grp, ...) 1568result (aio_req grp, ...)
1329 CODE: 1569 CODE:
1330{ 1570{
1331 int i; 1571 int i;
1572 AV *av;
1573
1574 grp->errorno = errno;
1575
1332 AV *av = newAV (); 1576 av = newAV ();
1333 1577
1334 for (i = 1; i < items; ++i ) 1578 for (i = 1; i < items; ++i )
1335 av_push (av, newSVsv (ST (i))); 1579 av_push (av, newSVsv (ST (i)));
1336 1580
1337 SvREFCNT_dec (grp->data); 1581 SvREFCNT_dec (grp->data);
1338 grp->data = (SV *)av; 1582 grp->data = (SV *)av;
1339} 1583}
1340 1584
1341void 1585void
1342lock (aio_req grp) 1586errno (aio_req grp, int errorno = errno)
1343 CODE: 1587 CODE:
1344 ++grp->length; 1588 grp->errorno = errorno;
1345 1589
1346void 1590void
1347unlock (aio_req grp)
1348 CODE:
1349 aio_grp_dec (grp);
1350
1351void
1352feeder_limit (aio_req grp, int limit) 1591limit (aio_req grp, int limit)
1353 CODE: 1592 CODE:
1354 grp->fd2 = limit; 1593 grp->fd2 = limit;
1355 aio_grp_feed (grp); 1594 aio_grp_feed (grp);
1356 1595
1357void 1596void
1358set_feeder (aio_req grp, SV *callback=&PL_sv_undef) 1597feed (aio_req grp, SV *callback=&PL_sv_undef)
1359 CODE: 1598 CODE:
1360{ 1599{
1361 SvREFCNT_dec (grp->fh2); 1600 SvREFCNT_dec (grp->fh2);
1362 grp->fh2 = newSVsv (callback); 1601 grp->fh2 = newSVsv (callback);
1363 1602

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