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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.33 by root, Mon Aug 22 23:21:57 2005 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"
7 16
8#include "autoconf/config.h" 17#include "autoconf/config.h"
9 18
10#include <pthread.h> 19#include <pthread.h>
11 20
21#include <stddef.h>
22#include <errno.h>
23#include <sys/time.h>
24#include <sys/select.h>
12#include <sys/types.h> 25#include <sys/types.h>
13#include <sys/stat.h> 26#include <sys/stat.h>
14 27#include <limits.h>
15#include <unistd.h> 28#include <unistd.h>
16#include <fcntl.h> 29#include <fcntl.h>
17#include <signal.h> 30#include <signal.h>
18#include <sched.h> 31#include <sched.h>
19 32
23# elif __freebsd 36# elif __freebsd
24# include <sys/socket.h> 37# include <sys/socket.h>
25# include <sys/uio.h> 38# include <sys/uio.h>
26# elif __hpux 39# elif __hpux
27# include <sys/socket.h> 40# include <sys/socket.h>
41# elif __solaris /* not yet */
42# include <sys/sendfile.h>
43# else
44# error sendfile support requested but not available
28# endif 45# endif
29#endif 46#endif
30 47
48/* used for struct dirent, AIX doesn't provide it */
49#ifndef NAME_MAX
50# define NAME_MAX 4096
51#endif
52
53#ifndef PTHREAD_STACK_MIN
54/* care for broken platforms, e.g. windows */
55# define PTHREAD_STACK_MIN 16384
56#endif
57
31#if __ia64 58#if __ia64
32# define STACKSIZE 65536 59# define STACKSIZE 65536
60#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61# define STACKSIZE PTHREAD_STACK_MIN
33#else 62#else
34# define STACKSIZE 4096 63# define STACKSIZE 16384
35#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;
36 88
37enum { 89enum {
38 REQ_QUIT, 90 REQ_QUIT,
39 REQ_OPEN, REQ_CLOSE, 91 REQ_OPEN, REQ_CLOSE,
40 REQ_READ, REQ_WRITE, REQ_READAHEAD, 92 REQ_READ, REQ_WRITE, REQ_READAHEAD,
41 REQ_SENDFILE, 93 REQ_SENDFILE,
42 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 94 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
43 REQ_FSYNC, REQ_FDATASYNC, 95 REQ_FSYNC, REQ_FDATASYNC,
44 REQ_UNLINK, REQ_RMDIR, 96 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
45 REQ_SYMLINK, 97 REQ_READDIR,
98 REQ_LINK, REQ_SYMLINK,
99 REQ_GROUP, REQ_NOP,
100 REQ_BUSY,
46}; 101};
47 102
103#define AIO_REQ_KLASS "IO::AIO::REQ"
104#define AIO_GRP_KLASS "IO::AIO::GRP"
105
48typedef struct aio_cb { 106typedef struct aio_cb
107{
49 struct aio_cb *volatile next; 108 struct aio_cb *volatile next;
50 109
51 int type; 110 SV *data, *callback;
52 111 SV *fh, *fh2;
53 int fd, fd2; 112 void *dataptr, *data2ptr;
113 Stat_t *statdata;
54 off_t offset; 114 off_t offset;
55 size_t length; 115 size_t length;
56 ssize_t result; 116 ssize_t result;
117
118 STRLEN dataoffset;
119 int type;
120 int fd, fd2;
121 int errorno;
57 mode_t mode; /* open */ 122 mode_t mode; /* open */
58 int errorno;
59 SV *data, *callback;
60 SV *fh, *fh2;
61 void *dataptr, *data2ptr;
62 STRLEN dataoffset;
63 123
64 Stat_t *statdata; 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;
65} aio_cb; 129} aio_cb;
66 130
131enum {
132 FLAG_CANCELLED = 0x01,
133};
134
67typedef aio_cb *aio_req; 135typedef aio_cb *aio_req;
136typedef aio_cb *aio_req_ornot;
68 137
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
69static int started, wanted; 149static unsigned int started, wanted;
70static volatile int nreqs; 150static volatile unsigned int nreqs, nready, npending;
71static int max_outstanding = 1<<30; 151static volatile unsigned int max_outstanding = 0xffffffff;
72static int respipe [2]; 152static int respipe [2];
73 153
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
74static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 203static pthread_mutex_t reslock = AIO_MUTEX_INIT;
75static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 204static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
76static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 205static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
77 206
78static volatile aio_req reqs, reqe; /* queue start, queue end */ 207/*
79static 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;
80 216
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);
262static void req_invoke (aio_req req);
81static void free_req (aio_req req) 263static void req_free (aio_req req);
82{ 264static void req_cancel (aio_req req);
83 if (req->data)
84 SvREFCNT_dec (req->data);
85 265
266/* must be called at most once */
267static SV *req_sv (aio_req req, const char *klass)
268{
86 if (req->fh) 269 if (!req->self)
87 SvREFCNT_dec (req->fh); 270 {
271 req->self = (SV *)newHV ();
272 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
273 }
88 274
89 if (req->fh2) 275 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
276}
277
278static aio_req SvAIO_REQ (SV *sv)
279{
280 MAGIC *mg;
281
282 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
283 croak ("object of class " AIO_REQ_KLASS " expected");
284
285 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
286
287 return mg ? (aio_req)mg->mg_ptr : 0;
288}
289
290static void aio_grp_feed (aio_req grp)
291{
292 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
293 {
294 int old_len = grp->length;
295
296 if (grp->fh2 && SvOK (grp->fh2))
297 {
298 dSP;
299
300 ENTER;
301 SAVETMPS;
302 PUSHMARK (SP);
303 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
304 PUTBACK;
305 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
306 SPAGAIN;
307 FREETMPS;
308 LEAVE;
309 }
310
311 /* stop if no progress has been made */
312 if (old_len == grp->length)
313 {
90 SvREFCNT_dec (req->fh2); 314 SvREFCNT_dec (grp->fh2);
91 315 grp->fh2 = 0;
92 if (req->statdata) 316 break;
93 Safefree (req->statdata); 317 }
94
95 if (req->callback)
96 SvREFCNT_dec (req->callback);
97
98 Safefree (req);
99}
100
101static void
102poll_wait ()
103{
104 if (nreqs && !ress)
105 { 318 }
319}
320
321static void aio_grp_dec (aio_req grp)
322{
323 --grp->length;
324
325 /* call feeder, if applicable */
326 aio_grp_feed (grp);
327
328 /* finish, if done */
329 if (!grp->length && grp->fd)
330 {
331 req_invoke (grp);
332 req_free (grp);
333 }
334}
335
336static void poll_wait ()
337{
106 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
107 FD_ZERO(&rfd); 350 FD_ZERO(&rfd);
108 FD_SET(respipe [0], &rfd); 351 FD_SET(respipe [0], &rfd);
109 352
110 select (respipe [0] + 1, &rfd, 0, 0, 0); 353 select (respipe [0] + 1, &rfd, 0, 0, 0);
111 } 354 }
112} 355}
113 356
114static int 357static void req_invoke (aio_req req)
115poll_cb () 358{
359 dSP;
360
361 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
362 {
363 ENTER;
364 SAVETMPS;
365 PUSHMARK (SP);
366 EXTEND (SP, 1);
367
368 switch (req->type)
369 {
370 case REQ_READDIR:
371 {
372 SV *rv = &PL_sv_undef;
373
374 if (req->result >= 0)
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 {
384 SV *sv = newSVpv (buf, 0);
385
386 av_store (av, i, sv);
387 buf += SvCUR (sv) + 1;
388 }
389
390 rv = sv_2mortal (newRV_noinc ((SV *)av));
391 }
392
393 PUSHs (rv);
394 }
395 break;
396
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;
435 }
436
437 errno = req->errorno;
438
439 PUTBACK;
440 call_sv (req->callback, G_VOID | G_EVAL);
441 SPAGAIN;
442
443 FREETMPS;
444 LEAVE;
445 }
446
447 if (req->grp)
448 {
449 aio_req grp = req->grp;
450
451 /* unlink request */
452 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
453 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
454
455 if (grp->grp_first == req)
456 grp->grp_first = req->grp_next;
457
458 aio_grp_dec (grp);
459 }
460
461 if (SvTRUE (ERRSV))
462 {
463 req_free (req);
464 croak (0);
465 }
466}
467
468static void req_free (aio_req req)
469{
470 if (req->self)
471 {
472 sv_unmagic (req->self, PERL_MAGIC_ext);
473 SvREFCNT_dec (req->self);
474 }
475
476 SvREFCNT_dec (req->data);
477 SvREFCNT_dec (req->fh);
478 SvREFCNT_dec (req->fh2);
479 SvREFCNT_dec (req->callback);
480 Safefree (req->statdata);
481
482 if (req->type == REQ_READDIR)
483 free (req->data2ptr);
484
485 Safefree (req);
486}
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
502static void req_cancel (aio_req req)
503{
504 req->flags |= FLAG_CANCELLED;
505
506 req_cancel_subs (req);
507}
508
509static int poll_cb (int max)
116{ 510{
117 dSP; 511 dSP;
118 int count = 0; 512 int count = 0;
119 int do_croak = 0; 513 int do_croak = 0;
120 aio_req req; 514 aio_req req;
121 515
122 for (;;) 516 for (;;)
123 { 517 {
124 pthread_mutex_lock (&reslock); 518 while (max <= 0 || count < max)
125 req = ress;
126
127 if (req)
128 { 519 {
129 ress = req->next; 520 LOCK (reslock);
521 req = reqq_shift (&res_queue);
130 522
131 if (!ress) 523 if (req)
132 { 524 {
133 /* read any signals sent by the worker threads */ 525 --npending;
134 char buf [32];
135 while (read (respipe [0], buf, 32) == 32)
136 ;
137 526
138 rese = 0; 527 if (!res_queue.size)
139 }
140 }
141
142 pthread_mutex_unlock (&reslock);
143
144 if (!req)
145 break;
146
147 nreqs--;
148
149 if (req->type == REQ_QUIT)
150 started--;
151 else
152 {
153 int errorno = errno;
154 errno = req->errorno;
155
156 if (req->type == REQ_READ)
157 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
158
159 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
160 SvREADONLY_off (req->data);
161
162 if (req->statdata)
163 {
164 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
165 PL_laststatval = req->result;
166 PL_statcache = *(req->statdata);
167 }
168
169 ENTER;
170 PUSHMARK (SP);
171 XPUSHs (sv_2mortal (newSViv (req->result)));
172
173 if (req->type == REQ_OPEN)
174 {
175 /* convert fd to fh */
176 SV *fh;
177
178 PUTBACK;
179 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
180 SPAGAIN;
181
182 fh = SvREFCNT_inc (POPs);
183
184 PUSHMARK (SP);
185 XPUSHs (sv_2mortal (fh));
186 }
187
188 if (SvOK (req->callback))
189 {
190 PUTBACK;
191 call_sv (req->callback, G_VOID | G_EVAL);
192 SPAGAIN;
193
194 if (SvTRUE (ERRSV))
195 { 528 {
196 free_req (req); 529 /* read any signals sent by the worker threads */
530 char buf [32];
531 while (read (respipe [0], buf, 32) == 32)
197 croak (0); 532 ;
198 } 533 }
199 } 534 }
200 535
201 LEAVE; 536 UNLOCK (reslock);
202 537
203 errno = errorno; 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
204 count++; 567 count++;
568 }
569
570 req_free (req);
205 } 571 }
206 572
207 free_req (req); 573 if (nreqs <= max_outstanding)
574 break;
575
576 poll_wait ();
577
578 max = 0;
208 } 579 }
209 580
210 return count; 581 return count;
211} 582}
212 583
213static void *aio_proc(void *arg); 584static void *aio_proc(void *arg);
214 585
215static void
216start_thread (void) 586static void start_thread (void)
217{ 587{
218 sigset_t fullsigset, oldsigset; 588 sigset_t fullsigset, oldsigset;
219 pthread_t tid;
220 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");
221 595
222 pthread_attr_init (&attr); 596 pthread_attr_init (&attr);
223 pthread_attr_setstacksize (&attr, STACKSIZE); 597 pthread_attr_setstacksize (&attr, STACKSIZE);
224 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); 598 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
225 599
226 sigfillset (&fullsigset); 600 sigfillset (&fullsigset);
601
602 LOCK (wrklock);
227 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); 603 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
228 604
229 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;
230 started++; 611 ++started;
612 }
613 else
614 free (wrk);
231 615
232 sigprocmask (SIG_SETMASK, &oldsigset, 0); 616 sigprocmask (SIG_SETMASK, &oldsigset, 0);
617 UNLOCK (wrklock);
233} 618}
234 619
235static void 620static void req_send (aio_req req)
236send_req (aio_req req)
237{ 621{
238 while (started < wanted && nreqs >= started) 622 while (started < wanted && nreqs >= started)
239 start_thread (); 623 start_thread ();
240 624
241 nreqs++; 625 ++nreqs;
242 626
243 pthread_mutex_lock (&reqlock); 627 LOCK (reqlock);
244 628 ++nready;
245 req->next = 0; 629 reqq_push (&req_queue, req);
246
247 if (reqe)
248 {
249 reqe->next = req;
250 reqe = req;
251 }
252 else
253 reqe = reqs = req;
254
255 pthread_cond_signal (&reqwait); 630 pthread_cond_signal (&reqwait);
256 pthread_mutex_unlock (&reqlock); 631 UNLOCK (reqlock);
257
258 if (nreqs > max_outstanding)
259 for (;;)
260 {
261 poll_cb ();
262
263 if (nreqs <= max_outstanding)
264 break;
265
266 poll_wait ();
267 }
268} 632}
269 633
270static void 634static void end_thread (void)
271end_thread (void)
272{ 635{
273 aio_req req; 636 aio_req req;
637
274 Newz (0, req, 1, aio_cb); 638 Newz (0, req, 1, aio_cb);
639
275 req->type = REQ_QUIT; 640 req->type = REQ_QUIT;
641 req->pri = PRI_MAX + PRI_BIAS;
276 642
277 send_req (req); 643 req_send (req);
278} 644}
279 645
280static void min_parallel (int nthreads) 646static void min_parallel (int nthreads)
281{ 647{
282 if (wanted < nthreads) 648 if (wanted < nthreads)
297 } 663 }
298 664
299 while (started > wanted) 665 while (started > wanted)
300 { 666 {
301 poll_wait (); 667 poll_wait ();
302 poll_cb (); 668 poll_cb (0);
303 } 669 }
304} 670}
305 671
306static void create_pipe () 672static void create_pipe ()
307{ 673{
311 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 677 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
312 croak ("cannot set result pipe to nonblocking mode"); 678 croak ("cannot set result pipe to nonblocking mode");
313 679
314 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 680 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
315 croak ("cannot set result pipe to nonblocking mode"); 681 croak ("cannot set result pipe to nonblocking mode");
316}
317
318static void atfork_prepare (void)
319{
320 pthread_mutex_lock (&reqlock);
321 pthread_mutex_lock (&reslock);
322}
323
324static void atfork_parent (void)
325{
326 pthread_mutex_unlock (&reslock);
327 pthread_mutex_unlock (&reqlock);
328}
329
330static void atfork_child (void)
331{
332 aio_req prv;
333
334 started = 0;
335
336 while (reqs)
337 {
338 prv = reqs;
339 reqs = prv->next;
340 free_req (prv);
341 }
342
343 reqs = reqe = 0;
344
345 while (ress)
346 {
347 prv = ress;
348 ress = prv->next;
349 free_req (prv);
350 }
351
352 ress = rese = 0;
353
354 close (respipe [0]);
355 close (respipe [1]);
356 create_pipe ();
357
358 atfork_parent ();
359} 682}
360 683
361/*****************************************************************************/ 684/*****************************************************************************/
362/* work around various missing functions */ 685/* work around various missing functions */
363 686
368/* 691/*
369 * make our pread/pwrite safe against themselves, but not against 692 * make our pread/pwrite safe against themselves, but not against
370 * normal read/write by using a mutex. slows down execution a lot, 693 * normal read/write by using a mutex. slows down execution a lot,
371 * but that's your problem, not mine. 694 * but that's your problem, not mine.
372 */ 695 */
373static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; 696static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
374 697
375static ssize_t 698static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
376pread (int fd, void *buf, size_t count, off_t offset)
377{ 699{
378 ssize_t res; 700 ssize_t res;
379 off_t ooffset; 701 off_t ooffset;
380 702
381 pthread_mutex_lock (&iolock); 703 LOCK (preadwritelock);
382 ooffset = lseek (fd, 0, SEEK_CUR); 704 ooffset = lseek (fd, 0, SEEK_CUR);
383 lseek (fd, offset, SEEK_SET); 705 lseek (fd, offset, SEEK_SET);
384 res = read (fd, buf, count); 706 res = read (fd, buf, count);
385 lseek (fd, ooffset, SEEK_SET); 707 lseek (fd, ooffset, SEEK_SET);
386 pthread_mutex_unlock (&iolock); 708 UNLOCK (preadwritelock);
387 709
388 return res; 710 return res;
389} 711}
390 712
391static ssize_t
392pwrite (int fd, void *buf, size_t count, off_t offset) 713static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
393{ 714{
394 ssize_t res; 715 ssize_t res;
395 off_t ooffset; 716 off_t ooffset;
396 717
397 pthread_mutex_lock (&iolock); 718 LOCK (preadwritelock);
398 ooffset = lseek (fd, 0, SEEK_CUR); 719 ooffset = lseek (fd, 0, SEEK_CUR);
399 lseek (fd, offset, SEEK_SET); 720 lseek (fd, offset, SEEK_SET);
400 res = write (fd, buf, count); 721 res = write (fd, buf, count);
401 lseek (fd, offset, SEEK_SET); 722 lseek (fd, offset, SEEK_SET);
402 pthread_mutex_unlock (&iolock); 723 UNLOCK (preadwritelock);
403 724
404 return res; 725 return res;
405} 726}
406#endif 727#endif
407 728
408#if !HAVE_FDATASYNC 729#if !HAVE_FDATASYNC
409# define fdatasync fsync 730# define fdatasync fsync
410#endif 731#endif
411 732
412#if !HAVE_READAHEAD 733#if !HAVE_READAHEAD
413# define readahead aio_readahead 734# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
414 735
415static char readahead_buf[4096]; 736static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
416
417static ssize_t
418readahead (int fd, off_t offset, size_t count)
419{ 737{
738 dBUF;
739
420 while (count > 0) 740 while (count > 0)
421 { 741 {
422 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 742 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
423 743
424 pread (fd, readahead_buf, len, offset); 744 pread (fd, aio_buf, len, offset);
425 offset += len; 745 offset += len;
426 count -= len; 746 count -= len;
427 } 747 }
428 748
429 errno = 0; 749 errno = 0;
430} 750}
751
431#endif 752#endif
432 753
754#if !HAVE_READDIR_R
755# define readdir_r aio_readdir_r
756
757static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
758
759static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
760{
761 struct dirent *e;
762 int errorno;
763
764 LOCK (readdirlock);
765
766 e = readdir (dirp);
767 errorno = errno;
768
769 if (e)
770 {
771 *res = ent;
772 strcpy (ent->d_name, e->d_name);
773 }
774 else
775 *res = 0;
776
777 UNLOCK (readdirlock);
778
779 errno = errorno;
780 return e ? 0 : -1;
781}
782#endif
783
433/* sendfile always needs emulation */ 784/* sendfile always needs emulation */
434static ssize_t
435sendfile_ (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)
436{ 786{
437 ssize_t res; 787 ssize_t res;
438 788
439 if (!count) 789 if (!count)
440 return 0; 790 return 0;
441 791
792#if HAVE_SENDFILE
442#if __linux 793# if __linux
443 res = sendfile (ofd, ifd, &offset, count); 794 res = sendfile (ofd, ifd, &offset, count);
444 795
445#elif __freebsd 796# elif __freebsd
446 /* 797 /*
447 * Of course, the freebsd sendfile is a dire hack with no thoughts 798 * Of course, the freebsd sendfile is a dire hack with no thoughts
448 * wasted on making it similar to other i/o functions. 799 * wasted on making it similar to other I/O functions.
449 */ 800 */
450 { 801 {
451 off_t sbytes; 802 off_t sbytes;
452 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 803 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
453 804
454 if (!res && errno == EAGAIN) 805 if (res < 0 && sbytes)
455 /* maybe on others, too, as usual, the manpage leaves you guessing */ 806 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
456 res = sbytes; 807 res = sbytes;
457 } 808 }
458 809
459#elif __hpux 810# elif __hpux
460 res = sendfile (ofd, ifd, offset, count, 0, 0); 811 res = sendfile (ofd, ifd, offset, count, 0, 0);
461 812
813# elif __solaris
814 {
815 struct sendfilevec vec;
816 size_t sbytes;
817
818 vec.sfv_fd = ifd;
819 vec.sfv_flag = 0;
820 vec.sfv_off = offset;
821 vec.sfv_len = count;
822
823 res = sendfilev (ofd, &vec, 1, &sbytes);
824
825 if (res < 0 && sbytes)
826 res = sbytes;
827 }
828
829# endif
462#else 830#else
463 res = -1; 831 res = -1;
464 errno = ENOSYS; 832 errno = ENOSYS;
465#endif 833#endif
466 834
835 if (res < 0
467 if (res < 0 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK)) 836 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
837#if __solaris
838 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
839#endif
840 )
841 )
468 { 842 {
469 /* emulate sendfile. this is a major pain in the ass */ 843 /* emulate sendfile. this is a major pain in the ass */
470 char *buf = malloc (4096); 844 dBUF;
845
471 res = 0; 846 res = 0;
472 847
473 for (;;) 848 while (count)
474 { 849 {
475 ssize_t cnt; 850 ssize_t cnt;
476 851
477 cnt = pread (ifd, buf, 4096, offset); 852 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
478 853
479 if (cnt <= 0) 854 if (cnt <= 0)
480 { 855 {
481 if (cnt && !res) res = -1; 856 if (cnt && !res) res = -1;
482 break; 857 break;
483 } 858 }
484 859
485 cnt = write (ofd, buf, cnt); 860 cnt = write (ofd, aio_buf, cnt);
486 861
487 if (cnt <= 0) 862 if (cnt <= 0)
488 { 863 {
489 if (cnt && !res) res = -1; 864 if (cnt && !res) res = -1;
490 break; 865 break;
491 } 866 }
492 867
493 offset += cnt; 868 offset += cnt;
494 res += cnt; 869 res += cnt;
870 count -= cnt;
495 } 871 }
496
497 {
498 int errorno = errno;
499 free (buf);
500 errno = errorno;
501 }
502 } 872 }
503 873
504 return res; 874 return res;
875}
876
877/* read a full directory */
878static void scandir_ (aio_req req, worker *self)
879{
880 DIR *dirp;
881 union
882 {
883 struct dirent d;
884 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
885 } *u;
886 struct dirent *entp;
887 char *name, *names;
888 int memlen = 4096;
889 int memofs = 0;
890 int res = 0;
891 int errorno;
892
893 LOCK (wrklock);
894 self->dirp = dirp = opendir (req->dataptr);
895 self->dbuf = u = malloc (sizeof (*u));
896 req->data2ptr = names = malloc (memlen);
897 UNLOCK (wrklock);
898
899 if (dirp && u && names)
900 for (;;)
901 {
902 errno = 0;
903 readdir_r (dirp, &u->d, &entp);
904
905 if (!entp)
906 break;
907
908 name = entp->d_name;
909
910 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
911 {
912 int len = strlen (name) + 1;
913
914 res++;
915
916 while (memofs + len > memlen)
917 {
918 memlen *= 2;
919 LOCK (wrklock);
920 req->data2ptr = names = realloc (names, memlen);
921 UNLOCK (wrklock);
922
923 if (!names)
924 break;
925 }
926
927 memcpy (names + memofs, name, len);
928 memofs += len;
929 }
930 }
931
932 if (errno)
933 res = -1;
934
935 req->result = res;
505} 936}
506 937
507/*****************************************************************************/ 938/*****************************************************************************/
508 939
509static void *
510aio_proc (void *thr_arg) 940static void *aio_proc (void *thr_arg)
511{ 941{
512 aio_req req; 942 aio_req req;
513 int type; 943 int type;
944 worker *self = (worker *)thr_arg;
514 945
515 do 946 do
516 { 947 {
517 pthread_mutex_lock (&reqlock); 948 LOCK (reqlock);
518 949
519 for (;;) 950 for (;;)
520 { 951 {
521 req = reqs; 952 self->req = req = reqq_shift (&req_queue);
522
523 if (reqs)
524 {
525 reqs = reqs->next;
526 if (!reqs) reqe = 0;
527 }
528 953
529 if (req) 954 if (req)
530 break; 955 break;
531 956
532 pthread_cond_wait (&reqwait, &reqlock); 957 pthread_cond_wait (&reqwait, &reqlock);
533 } 958 }
534 959
535 pthread_mutex_unlock (&reqlock); 960 --nready;
961
962 UNLOCK (reqlock);
536 963
537 errno = 0; /* strictly unnecessary */ 964 errno = 0; /* strictly unnecessary */
965 type = req->type; /* remember type for QUIT check */
538 966
539 type = req->type; 967 if (!(req->flags & FLAG_CANCELLED))
540
541 switch (type) 968 switch (type)
542 { 969 {
543 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;
544 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;
545 972
546 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;
547 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;
548 975
549 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 976 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
550 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 977 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
551 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 978 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
552 979
553 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 980 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
554 case REQ_CLOSE: req->result = close (req->fd); break; 981 case REQ_CLOSE: req->result = close (req->fd); break;
555 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 982 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
556 case REQ_RMDIR: req->result = rmdir (req->dataptr); break; 983 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
984 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
985 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
557 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 986 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
558 987
559 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 988 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
560 case REQ_FSYNC: req->result = fsync (req->fd); break; 989 case REQ_FSYNC: req->result = fsync (req->fd); break;
990 case REQ_READDIR: scandir_ (req, self); break;
561 991
992 case REQ_BUSY:
993 {
994 struct timeval tv;
995
996 tv.tv_sec = req->fd;
997 tv.tv_usec = req->fd2;
998
999 req->result = select (0, 0, 0, 0, &tv);
1000 }
1001
1002 case REQ_GROUP:
1003 case REQ_NOP:
562 case REQ_QUIT: 1004 case REQ_QUIT:
563 break; 1005 break;
564 1006
565 default: 1007 default:
566 req->result = ENOSYS; 1008 req->result = ENOSYS;
567 break; 1009 break;
568 } 1010 }
569 1011
570 req->errorno = errno; 1012 req->errorno = errno;
571 1013
572 pthread_mutex_lock (&reslock); 1014 LOCK (reslock);
573 1015
574 req->next = 0; 1016 ++npending;
575 1017
576 if (rese) 1018 if (!reqq_push (&res_queue, req))
577 {
578 rese->next = req;
579 rese = req;
580 }
581 else
582 {
583 rese = ress = req;
584
585 /* write a dummy byte to the pipe so fh becomes ready */ 1019 /* write a dummy byte to the pipe so fh becomes ready */
586 write (respipe [1], &respipe, 1); 1020 write (respipe [1], &respipe, 1);
587 }
588 1021
589 pthread_mutex_unlock (&reslock); 1022 self->req = 0;
1023 worker_clear (self);
1024
1025 UNLOCK (reslock);
590 } 1026 }
591 while (type != REQ_QUIT); 1027 while (type != REQ_QUIT);
592 1028
1029 LOCK (wrklock);
1030 worker_free (self);
1031 UNLOCK (wrklock);
1032
593 return 0; 1033 return 0;
1034}
1035
1036/*****************************************************************************/
1037
1038static void atfork_prepare (void)
1039{
1040 LOCK (wrklock);
1041 LOCK (reqlock);
1042 LOCK (reslock);
1043#if !HAVE_PREADWRITE
1044 LOCK (preadwritelock);
1045#endif
1046#if !HAVE_READDIR_R
1047 LOCK (readdirlock);
1048#endif
1049}
1050
1051static void atfork_parent (void)
1052{
1053#if !HAVE_READDIR_R
1054 UNLOCK (readdirlock);
1055#endif
1056#if !HAVE_PREADWRITE
1057 UNLOCK (preadwritelock);
1058#endif
1059 UNLOCK (reslock);
1060 UNLOCK (reqlock);
1061 UNLOCK (wrklock);
1062}
1063
1064static void atfork_child (void)
1065{
1066 aio_req prv;
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
1085 started = 0;
1086 nreqs = 0;
1087
1088 close (respipe [0]);
1089 close (respipe [1]);
1090 create_pipe ();
1091
1092 atfork_parent ();
594} 1093}
595 1094
596#define dREQ \ 1095#define dREQ \
597 aio_req req; \ 1096 aio_req req; \
1097 int req_pri = next_pri; \
1098 next_pri = DEFAULT_PRI + PRI_BIAS; \
598 \ 1099 \
599 if (SvOK (callback) && !SvROK (callback)) \ 1100 if (SvOK (callback) && !SvROK (callback)) \
600 croak ("clalback must be undef or of reference type"); \ 1101 croak ("callback must be undef or of reference type"); \
601 \ 1102 \
602 Newz (0, req, 1, aio_cb); \ 1103 Newz (0, req, 1, aio_cb); \
603 if (!req) \ 1104 if (!req) \
604 croak ("out of memory during aio_req allocation"); \ 1105 croak ("out of memory during aio_req allocation"); \
605 \ 1106 \
606 req->callback = newSVsv (callback); 1107 req->callback = newSVsv (callback); \
1108 req->pri = req_pri
1109
1110#define REQ_SEND \
1111 req_send (req); \
1112 \
1113 if (GIMME_V != G_VOID) \
1114 XPUSHs (req_sv (req, AIO_REQ_KLASS));
607 1115
608MODULE = IO::AIO PACKAGE = IO::AIO 1116MODULE = IO::AIO PACKAGE = IO::AIO
609 1117
610PROTOTYPES: ENABLE 1118PROTOTYPES: ENABLE
611 1119
612BOOT: 1120BOOT:
613{ 1121{
1122 HV *stash = gv_stashpv ("IO::AIO", 1);
1123 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1124 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1125 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1126
614 create_pipe (); 1127 create_pipe ();
615 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1128 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
616} 1129}
617 1130
618void 1131void
619min_parallel(nthreads) 1132min_parallel (int nthreads)
620 int nthreads
621 PROTOTYPE: $ 1133 PROTOTYPE: $
622 1134
623void 1135void
624max_parallel(nthreads) 1136max_parallel (int nthreads)
625 int nthreads
626 PROTOTYPE: $ 1137 PROTOTYPE: $
627 1138
628int 1139int
629max_outstanding(nreqs) 1140max_outstanding (int maxreqs)
630 int nreqs 1141 PROTOTYPE: $
631 PROTOTYPE: $
632 CODE: 1142 CODE:
633 RETVAL = max_outstanding; 1143 RETVAL = max_outstanding;
634 max_outstanding = nreqs; 1144 max_outstanding = maxreqs;
1145 OUTPUT:
1146 RETVAL
635 1147
636void 1148void
637aio_open(pathname,flags,mode,callback=&PL_sv_undef) 1149aio_open (pathname,flags,mode,callback=&PL_sv_undef)
638 SV * pathname 1150 SV * pathname
639 int flags 1151 int flags
640 int mode 1152 int mode
641 SV * callback 1153 SV * callback
642 PROTOTYPE: $$$;$ 1154 PROTOTYPE: $$$;$
643 CODE: 1155 PPCODE:
644{ 1156{
645 dREQ; 1157 dREQ;
646 1158
647 req->type = REQ_OPEN; 1159 req->type = REQ_OPEN;
648 req->data = newSVsv (pathname); 1160 req->data = newSVsv (pathname);
649 req->dataptr = SvPVbyte_nolen (req->data); 1161 req->dataptr = SvPVbyte_nolen (req->data);
650 req->fd = flags; 1162 req->fd = flags;
651 req->mode = mode; 1163 req->mode = mode;
652 1164
653 send_req (req); 1165 REQ_SEND;
654} 1166}
655 1167
656void 1168void
657aio_close(fh,callback=&PL_sv_undef) 1169aio_close (fh,callback=&PL_sv_undef)
658 SV * fh 1170 SV * fh
659 SV * callback 1171 SV * callback
660 PROTOTYPE: $;$ 1172 PROTOTYPE: $;$
661 ALIAS: 1173 ALIAS:
662 aio_close = REQ_CLOSE 1174 aio_close = REQ_CLOSE
663 aio_fsync = REQ_FSYNC 1175 aio_fsync = REQ_FSYNC
664 aio_fdatasync = REQ_FDATASYNC 1176 aio_fdatasync = REQ_FDATASYNC
665 CODE: 1177 PPCODE:
666{ 1178{
667 dREQ; 1179 dREQ;
668 1180
669 req->type = ix; 1181 req->type = ix;
670 req->fh = newSVsv (fh); 1182 req->fh = newSVsv (fh);
671 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1183 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
672 1184
673 send_req (req); 1185 REQ_SEND (req);
674} 1186}
675 1187
676void 1188void
677aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1189aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
678 SV * fh 1190 SV * fh
679 UV offset 1191 UV offset
680 UV length 1192 UV length
681 SV * data 1193 SV * data
682 UV dataoffset 1194 UV dataoffset
683 SV * callback 1195 SV * callback
684 ALIAS: 1196 ALIAS:
685 aio_read = REQ_READ 1197 aio_read = REQ_READ
686 aio_write = REQ_WRITE 1198 aio_write = REQ_WRITE
687 PROTOTYPE: $$$$$;$ 1199 PROTOTYPE: $$$$$;$
688 CODE: 1200 PPCODE:
689{ 1201{
690 aio_req req; 1202 aio_req req;
691 STRLEN svlen; 1203 STRLEN svlen;
692 char *svptr = SvPVbyte (data, svlen); 1204 char *svptr = SvPVbyte (data, svlen);
693 1205
731 { 1243 {
732 SvREADONLY_on (data); 1244 SvREADONLY_on (data);
733 req->data2ptr = (void *)data; 1245 req->data2ptr = (void *)data;
734 } 1246 }
735 1247
736 send_req (req); 1248 REQ_SEND;
737 } 1249 }
738} 1250}
739 1251
740void 1252void
741aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1253aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
742 SV * out_fh 1254 SV * out_fh
743 SV * in_fh 1255 SV * in_fh
744 UV in_offset 1256 UV in_offset
745 UV length 1257 UV length
746 SV * callback 1258 SV * callback
747 PROTOTYPE: $$$$;$ 1259 PROTOTYPE: $$$$;$
748 CODE: 1260 PPCODE:
749{ 1261{
750 dREQ; 1262 dREQ;
751 1263
752 req->type = REQ_SENDFILE; 1264 req->type = REQ_SENDFILE;
753 req->fh = newSVsv (out_fh); 1265 req->fh = newSVsv (out_fh);
755 req->fh2 = newSVsv (in_fh); 1267 req->fh2 = newSVsv (in_fh);
756 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1268 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
757 req->offset = in_offset; 1269 req->offset = in_offset;
758 req->length = length; 1270 req->length = length;
759 1271
760 send_req (req); 1272 REQ_SEND;
761} 1273}
762 1274
763void 1275void
764aio_readahead(fh,offset,length,callback=&PL_sv_undef) 1276aio_readahead (fh,offset,length,callback=&PL_sv_undef)
765 SV * fh 1277 SV * fh
766 UV offset 1278 UV offset
767 IV length 1279 IV length
768 SV * callback 1280 SV * callback
769 PROTOTYPE: $$$;$ 1281 PROTOTYPE: $$$;$
770 CODE: 1282 PPCODE:
771{ 1283{
772 dREQ; 1284 dREQ;
773 1285
774 req->type = REQ_READAHEAD; 1286 req->type = REQ_READAHEAD;
775 req->fh = newSVsv (fh); 1287 req->fh = newSVsv (fh);
776 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1288 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
777 req->offset = offset; 1289 req->offset = offset;
778 req->length = length; 1290 req->length = length;
779 1291
780 send_req (req); 1292 REQ_SEND;
781} 1293}
782 1294
783void 1295void
784aio_stat(fh_or_path,callback=&PL_sv_undef) 1296aio_stat (fh_or_path,callback=&PL_sv_undef)
785 SV * fh_or_path 1297 SV * fh_or_path
786 SV * callback 1298 SV * callback
787 ALIAS: 1299 ALIAS:
788 aio_stat = REQ_STAT 1300 aio_stat = REQ_STAT
789 aio_lstat = REQ_LSTAT 1301 aio_lstat = REQ_LSTAT
790 CODE: 1302 PPCODE:
791{ 1303{
792 dREQ; 1304 dREQ;
793 1305
794 New (0, req->statdata, 1, Stat_t); 1306 New (0, req->statdata, 1, Stat_t);
795 if (!req->statdata) 1307 if (!req->statdata)
796 { 1308 {
797 free_req (req); 1309 req_free (req);
798 croak ("out of memory during aio_req->statdata allocation"); 1310 croak ("out of memory during aio_req->statdata allocation");
799 } 1311 }
800 1312
801 if (SvPOK (fh_or_path)) 1313 if (SvPOK (fh_or_path))
802 { 1314 {
809 req->type = REQ_FSTAT; 1321 req->type = REQ_FSTAT;
810 req->fh = newSVsv (fh_or_path); 1322 req->fh = newSVsv (fh_or_path);
811 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1323 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
812 } 1324 }
813 1325
814 send_req (req); 1326 REQ_SEND;
815} 1327}
816 1328
817void 1329void
818aio_unlink(pathname,callback=&PL_sv_undef) 1330aio_unlink (pathname,callback=&PL_sv_undef)
819 SV * pathname 1331 SV * pathname
820 SV * callback 1332 SV * callback
821 ALIAS: 1333 ALIAS:
822 aio_unlink = REQ_UNLINK 1334 aio_unlink = REQ_UNLINK
823 aio_rmdir = REQ_RMDIR 1335 aio_rmdir = REQ_RMDIR
1336 aio_readdir = REQ_READDIR
824 CODE: 1337 PPCODE:
825{ 1338{
826 dREQ; 1339 dREQ;
827 1340
828 req->type = ix; 1341 req->type = ix;
829 req->data = newSVsv (pathname); 1342 req->data = newSVsv (pathname);
830 req->dataptr = SvPVbyte_nolen (req->data); 1343 req->dataptr = SvPVbyte_nolen (req->data);
831 1344
832 send_req (req); 1345 REQ_SEND;
833} 1346}
834 1347
835void 1348void
836aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1349aio_link (oldpath,newpath,callback=&PL_sv_undef)
837 SV * oldpath 1350 SV * oldpath
838 SV * newpath 1351 SV * newpath
839 SV * callback 1352 SV * callback
1353 ALIAS:
1354 aio_link = REQ_LINK
1355 aio_symlink = REQ_SYMLINK
1356 aio_rename = REQ_RENAME
840 CODE: 1357 PPCODE:
841{ 1358{
842 dREQ; 1359 dREQ;
843 1360
844 req->type = REQ_SYMLINK; 1361 req->type = ix;
845 req->fh = newSVsv (oldpath); 1362 req->fh = newSVsv (oldpath);
846 req->data2ptr = SvPVbyte_nolen (req->fh); 1363 req->data2ptr = SvPVbyte_nolen (req->fh);
847 req->data = newSVsv (newpath); 1364 req->data = newSVsv (newpath);
848 req->dataptr = SvPVbyte_nolen (req->data); 1365 req->dataptr = SvPVbyte_nolen (req->data);
849 1366
850 send_req (req); 1367 REQ_SEND;
851} 1368}
852 1369
853void 1370void
1371aio_busy (delay,callback=&PL_sv_undef)
1372 double delay
1373 SV * callback
1374 PPCODE:
1375{
1376 dREQ;
1377
1378 req->type = REQ_BUSY;
1379 req->fd = delay < 0. ? 0 : delay;
1380 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1381
1382 REQ_SEND;
1383}
1384
1385void
1386aio_group (callback=&PL_sv_undef)
1387 SV * callback
1388 PROTOTYPE: ;$
1389 PPCODE:
1390{
1391 dREQ;
1392
1393 req->type = REQ_GROUP;
1394 req_send (req);
1395
1396 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1397}
1398
1399void
1400aio_nop (callback=&PL_sv_undef)
1401 SV * callback
1402 PPCODE:
1403{
1404 dREQ;
1405
1406 req->type = REQ_NOP;
1407
1408 REQ_SEND;
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;
1432
1433void
854flush() 1434flush ()
855 PROTOTYPE: 1435 PROTOTYPE:
856 CODE: 1436 CODE:
857 while (nreqs) 1437 while (nreqs)
858 { 1438 {
859 poll_wait (); 1439 poll_wait ();
860 poll_cb (); 1440 poll_cb (0);
861 } 1441 }
862 1442
863void 1443void
864poll() 1444poll()
865 PROTOTYPE: 1445 PROTOTYPE:
866 CODE: 1446 CODE:
867 if (nreqs) 1447 if (nreqs)
868 { 1448 {
869 poll_wait (); 1449 poll_wait ();
870 poll_cb (); 1450 poll_cb (0);
871 } 1451 }
872 1452
873int 1453int
874poll_fileno() 1454poll_fileno()
875 PROTOTYPE: 1455 PROTOTYPE:
880 1460
881int 1461int
882poll_cb(...) 1462poll_cb(...)
883 PROTOTYPE: 1463 PROTOTYPE:
884 CODE: 1464 CODE:
885 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);
886 OUTPUT: 1474 OUTPUT:
887 RETVAL 1475 RETVAL
888 1476
889void 1477void
890poll_wait() 1478poll_wait()
899 CODE: 1487 CODE:
900 RETVAL = nreqs; 1488 RETVAL = nreqs;
901 OUTPUT: 1489 OUTPUT:
902 RETVAL 1490 RETVAL
903 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
1512PROTOTYPES: DISABLE
1513
1514MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1515
1516void
1517cancel (aio_req_ornot req)
1518 CODE:
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);
1526
1527MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1528
1529void
1530add (aio_req grp, ...)
1531 PPCODE:
1532{
1533 int i;
1534 aio_req req;
1535
1536 if (grp->fd == 2)
1537 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1538
1539 for (i = 1; i < items; ++i )
1540 {
1541 if (GIMME_V != G_VOID)
1542 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1543
1544 req = SvAIO_REQ (ST (i));
1545
1546 if (req)
1547 {
1548 ++grp->length;
1549 req->grp = grp;
1550
1551 req->grp_prev = 0;
1552 req->grp_next = grp->grp_first;
1553
1554 if (grp->grp_first)
1555 grp->grp_first->grp_prev = req;
1556
1557 grp->grp_first = req;
1558 }
1559 }
1560}
1561
1562void
1563cancel_subs (aio_req_ornot req)
1564 CODE:
1565 req_cancel_subs (req);
1566
1567void
1568result (aio_req grp, ...)
1569 CODE:
1570{
1571 int i;
1572 AV *av;
1573
1574 grp->errorno = errno;
1575
1576 av = newAV ();
1577
1578 for (i = 1; i < items; ++i )
1579 av_push (av, newSVsv (ST (i)));
1580
1581 SvREFCNT_dec (grp->data);
1582 grp->data = (SV *)av;
1583}
1584
1585void
1586errno (aio_req grp, int errorno = errno)
1587 CODE:
1588 grp->errorno = errorno;
1589
1590void
1591limit (aio_req grp, int limit)
1592 CODE:
1593 grp->fd2 = limit;
1594 aio_grp_feed (grp);
1595
1596void
1597feed (aio_req grp, SV *callback=&PL_sv_undef)
1598 CODE:
1599{
1600 SvREFCNT_dec (grp->fh2);
1601 grp->fh2 = newSVsv (callback);
1602
1603 if (grp->fd2 <= 0)
1604 grp->fd2 = 2;
1605
1606 aio_grp_feed (grp);
1607}
1608

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