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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.43 by root, Sat Oct 21 23:06:04 2006 UTC vs.
Revision 1.90 by root, Tue Oct 31 00:32:19 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"
9 18
10#include <pthread.h> 19#include <pthread.h>
11 20
12#include <stddef.h> 21#include <stddef.h>
13#include <errno.h> 22#include <errno.h>
23#include <sys/time.h>
24#include <sys/select.h>
14#include <sys/types.h> 25#include <sys/types.h>
15#include <sys/stat.h> 26#include <sys/stat.h>
16#include <limits.h> 27#include <limits.h>
17#include <unistd.h> 28#include <unistd.h>
18#include <fcntl.h> 29#include <fcntl.h>
32# else 43# else
33# error sendfile support requested but not available 44# error sendfile support requested but not available
34# endif 45# endif
35#endif 46#endif
36 47
48/* number of seconds after which idle threads exit */
49#define IDLE_TIMEOUT 10
50
37/* used for struct dirent, AIX doesn't provide it */ 51/* used for struct dirent, AIX doesn't provide it */
38#ifndef NAME_MAX 52#ifndef NAME_MAX
39# define NAME_MAX 4096 53# define NAME_MAX 4096
40#endif 54#endif
41 55
56#ifndef PTHREAD_STACK_MIN
57/* care for broken platforms, e.g. windows */
58# define PTHREAD_STACK_MIN 16384
59#endif
60
42#if __ia64 61#if __ia64
43# define STACKSIZE 65536 62# define STACKSIZE 65536
63#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64# define STACKSIZE PTHREAD_STACK_MIN
44#else 65#else
45# define STACKSIZE 8192 66# define STACKSIZE 16384
46#endif 67#endif
68
69/* wether word reads are potentially non-atomic.
70 * this is conservatice, likely most arches this runs
71 * on have atomic word read/writes.
72 */
73#ifndef WORDACCESS_UNSAFE
74# if __i386 || __x86_64
75# define WORDACCESS_UNSAFE 0
76# else
77# define WORDACCESS_UNSAFE 1
78# endif
79#endif
80
81/* buffer size for various temporary buffers */
82#define AIO_BUFSIZE 65536
83
84#define dBUF \
85 char *aio_buf; \
86 LOCK (wrklock); \
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
88 UNLOCK (wrklock); \
89 if (!aio_buf) \
90 return -1;
91
92typedef SV SV8; /* byte-sv, used for argument-checking */
47 93
48enum { 94enum {
49 REQ_QUIT, 95 REQ_QUIT,
50 REQ_OPEN, REQ_CLOSE, 96 REQ_OPEN, REQ_CLOSE,
51 REQ_READ, REQ_WRITE, REQ_READAHEAD, 97 REQ_READ, REQ_WRITE, REQ_READAHEAD,
52 REQ_SENDFILE, 98 REQ_SENDFILE,
53 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 99 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54 REQ_FSYNC, REQ_FDATASYNC, 100 REQ_FSYNC, REQ_FDATASYNC,
55 REQ_UNLINK, REQ_RMDIR, REQ_RENAME, 101 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56 REQ_READDIR, 102 REQ_MKNOD, REQ_READDIR,
57 REQ_LINK, REQ_SYMLINK, 103 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
104 REQ_GROUP, REQ_NOP,
105 REQ_BUSY,
58}; 106};
59 107
60#define AIO_CB_KLASS "IO::AIO::CB" 108#define AIO_REQ_KLASS "IO::AIO::REQ"
109#define AIO_GRP_KLASS "IO::AIO::GRP"
61 110
62typedef struct aio_cb 111typedef struct aio_cb
63{ 112{
64 struct aio_cb *grp_prev, *grp_next;
65 struct aio_grp *grp;
66
67 struct aio_cb *volatile next; 113 struct aio_cb *volatile next;
68 114
115 SV *callback, *fh;
116 SV *sv1, *sv2;
117 void *ptr1, *ptr2;
118 off_t offs;
119 size_t size;
120 ssize_t result;
121
122 STRLEN stroffset;
123 int type;
124 int int1, int2;
125 int errorno;
126 mode_t mode; /* open */
127
128 unsigned char flags;
129 unsigned char pri;
130
69 SV *self; /* the perl counterpart of this request, if any */ 131 SV *self; /* the perl counterpart of this request, if any */
70 132 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
71 SV *data, *callback;
72 SV *fh, *fh2;
73 void *dataptr, *data2ptr;
74 Stat_t *statdata;
75 off_t offset;
76 size_t length;
77 ssize_t result;
78
79 int type;
80 int fd, fd2;
81 int errorno;
82 STRLEN dataoffset;
83 mode_t mode; /* open */
84 unsigned char cancelled;
85} aio_cb; 133} aio_cb;
134
135enum {
136 FLAG_CANCELLED = 0x01, /* request was cancelled */
137 FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
138 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
139};
86 140
87typedef aio_cb *aio_req; 141typedef aio_cb *aio_req;
88typedef aio_cb *aio_req_ornot; 142typedef aio_cb *aio_req_ornot;
89 143
144enum {
145 PRI_MIN = -4,
146 PRI_MAX = 4,
147
148 DEFAULT_PRI = 0,
149 PRI_BIAS = -PRI_MIN,
150 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
151};
152
153#define AIO_TICKS ((1000000 + 1023) >> 10)
154
155static unsigned int max_poll_time = 0;
156static unsigned int max_poll_reqs = 0;
157
158/* calculcate time difference in ~1/AIO_TICKS of a second */
159static int tvdiff (struct timeval *tv1, struct timeval *tv2)
160{
161 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
162 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
163}
164
165static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
90static int started, wanted; 167static unsigned int started, idle, wanted;
91static volatile int nreqs; 168
92static int max_outstanding = 1<<30; 169#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
170# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
171#else
172# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
173#endif
174
175#define LOCK(mutex) pthread_mutex_lock (&(mutex))
176#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
177
178/* worker threads management */
179static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
180
181typedef struct worker {
182 /* locked by wrklock */
183 struct worker *prev, *next;
184
185 pthread_t tid;
186
187 /* locked by reslock, reqlock or wrklock */
188 aio_req req; /* currently processed request */
189 void *dbuf;
190 DIR *dirp;
191} worker;
192
193static worker wrk_first = { &wrk_first, &wrk_first, 0 };
194
195static void worker_clear (worker *wrk)
196{
197 if (wrk->dirp)
198 {
199 closedir (wrk->dirp);
200 wrk->dirp = 0;
201 }
202
203 if (wrk->dbuf)
204 {
205 free (wrk->dbuf);
206 wrk->dbuf = 0;
207 }
208}
209
210static void worker_free (worker *wrk)
211{
212 wrk->next->prev = wrk->prev;
213 wrk->prev->next = wrk->next;
214
215 free (wrk);
216}
217
218static volatile unsigned int nreqs, nready, npending;
219static volatile unsigned int max_idle = 4;
220static volatile unsigned int max_outstanding = 0xffffffff;
93static int respipe [2]; 221static int respipe [2];
94 222
95static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 223static pthread_mutex_t reslock = AIO_MUTEX_INIT;
96static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 224static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
97static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 225static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
98 226
99static volatile aio_req reqs, reqe; /* queue start, queue end */ 227#if WORDACCESS_UNSAFE
100static volatile aio_req ress, rese; /* queue start, queue end */
101 228
229static unsigned int get_nready ()
230{
231 unsigned int retval;
232
233 LOCK (reqlock);
234 retval = nready;
235 UNLOCK (reqlock);
236
237 return retval;
238}
239
240static unsigned int get_npending ()
241{
242 unsigned int retval;
243
244 LOCK (reslock);
245 retval = npending;
246 UNLOCK (reslock);
247
248 return retval;
249}
250
251static unsigned int get_nthreads ()
252{
253 unsigned int retval;
254
255 LOCK (wrklock);
256 retval = started;
257 UNLOCK (wrklock);
258
259 return retval;
260}
261
262#else
263
264# define get_nready() nready
265# define get_npending() npending
266# define get_nthreads() started
267
268#endif
269
270/*
271 * a somewhat faster data structure might be nice, but
272 * with 8 priorities this actually needs <20 insns
273 * per shift, the most expensive operation.
274 */
102typedef struct aio_grp 275typedef struct {
103{ 276 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
104 struct aio_cb *first, *last; 277 int size;
105 SV *callback; 278} reqq;
106 int busycount;
107} aio_grp;
108 279
109static void aio_grp_begin (aio_grp *grp) 280static reqq req_queue;
110{ 281static reqq res_queue;
111 ++grp->busycount;
112}
113 282
114static void aio_grp_end (aio_grp *grp) 283int reqq_push (reqq *q, aio_req req)
115{ 284{
116 --grp->busycount; 285 int pri = req->pri;
286 req->next = 0;
117 287
118 if (grp->busycount) 288 if (q->qe[pri])
289 {
290 q->qe[pri]->next = req;
291 q->qe[pri] = req;
292 }
293 else
294 q->qe[pri] = q->qs[pri] = req;
295
296 return q->size++;
297}
298
299aio_req reqq_shift (reqq *q)
300{
301 int pri;
302
303 if (!q->size)
119 return; 304 return 0;
120 305
121 SvREFCNT_dec (grp->callback); 306 --q->size;
122 grp->callback = 0;
123}
124 307
125static aio_grp *aio_grp_new () 308 for (pri = NUM_PRI; pri--; )
126{ 309 {
127 aio_grp *grp; 310 aio_req req = q->qs[pri];
128 311
129 Newz (0, grp, 1, aio_grp); 312 if (req)
130 aio_grp_begin (grp); 313 {
314 if (!(q->qs[pri] = req->next))
315 q->qe[pri] = 0;
131 316
132 return grp; 317 return req;
318 }
319 }
320
321 abort ();
133} 322}
323
324static int poll_cb ();
325static void req_invoke (aio_req req);
326static void req_free (aio_req req);
327static void req_cancel (aio_req req);
134 328
135/* must be called at most once */ 329/* must be called at most once */
136static SV *req_sv (aio_req req) 330static SV *req_sv (aio_req req, const char *klass)
137{ 331{
332 if (!req->self)
333 {
138 req->self = (SV *)newHV (); 334 req->self = (SV *)newHV ();
139 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 335 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
336 }
140 337
141 return sv_bless (newRV_noinc (req->self), gv_stashpv (AIO_CB_KLASS, 1)); 338 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
142} 339}
143 340
144static aio_req SvAIO_REQ (SV *sv) 341static aio_req SvAIO_REQ (SV *sv)
145{ 342{
343 MAGIC *mg;
344
146 if (!sv_derived_from (sv, AIO_CB_KLASS) || !SvROK (sv)) 345 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
147 croak ("object of class " AIO_CB_KLASS " expected"); 346 croak ("object of class " AIO_REQ_KLASS " expected");
148 347
149 MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 348 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
150 349
151 return mg ? (aio_req)mg->mg_ptr : 0; 350 return mg ? (aio_req)mg->mg_ptr : 0;
351}
352
353static void aio_grp_feed (aio_req grp)
354{
355 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
356 {
357 int old_len = grp->size;
358
359 if (grp->sv2 && SvOK (grp->sv2))
360 {
361 dSP;
362
363 ENTER;
364 SAVETMPS;
365 PUSHMARK (SP);
366 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
367 PUTBACK;
368 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369 SPAGAIN;
370 FREETMPS;
371 LEAVE;
372 }
373
374 /* stop if no progress has been made */
375 if (old_len == grp->size)
376 {
377 SvREFCNT_dec (grp->sv2);
378 grp->sv2 = 0;
379 break;
380 }
381 }
382}
383
384static void aio_grp_dec (aio_req grp)
385{
386 --grp->size;
387
388 /* call feeder, if applicable */
389 aio_grp_feed (grp);
390
391 /* finish, if done */
392 if (!grp->size && grp->int1)
393 {
394 req_invoke (grp);
395 req_free (grp);
396 }
397}
398
399static void req_invoke (aio_req req)
400{
401 dSP;
402
403 if (req->flags & FLAG_SV1_RO_OFF)
404 SvREADONLY_off (req->sv1);
405
406 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
407 {
408 ENTER;
409 SAVETMPS;
410 PUSHMARK (SP);
411 EXTEND (SP, 1);
412
413 switch (req->type)
414 {
415 case REQ_READDIR:
416 {
417 SV *rv = &PL_sv_undef;
418
419 if (req->result >= 0)
420 {
421 int i;
422 char *buf = req->ptr2;
423 AV *av = newAV ();
424
425 av_extend (av, req->result - 1);
426
427 for (i = 0; i < req->result; ++i)
428 {
429 SV *sv = newSVpv (buf, 0);
430
431 av_store (av, i, sv);
432 buf += SvCUR (sv) + 1;
433 }
434
435 rv = sv_2mortal (newRV_noinc ((SV *)av));
436 }
437
438 PUSHs (rv);
439 }
440 break;
441
442 case REQ_OPEN:
443 {
444 /* convert fd to fh */
445 SV *fh;
446
447 PUSHs (sv_2mortal (newSViv (req->result)));
448 PUTBACK;
449 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
450 SPAGAIN;
451
452 fh = SvREFCNT_inc (POPs);
453
454 PUSHMARK (SP);
455 XPUSHs (sv_2mortal (fh));
456 }
457 break;
458
459 case REQ_GROUP:
460 req->int1 = 2; /* mark group as finished */
461
462 if (req->sv1)
463 {
464 int i;
465 AV *av = (AV *)req->sv1;
466
467 EXTEND (SP, AvFILL (av) + 1);
468 for (i = 0; i <= AvFILL (av); ++i)
469 PUSHs (*av_fetch (av, i, 0));
470 }
471 break;
472
473 case REQ_NOP:
474 case REQ_BUSY:
475 break;
476
477 case REQ_READLINK:
478 if (req->result > 0)
479 {
480 SvCUR_set (req->sv1, req->result);
481 *SvEND (req->sv1) = 0;
482 PUSHs (req->sv1);
483 }
484 break;
485
486 case REQ_STAT:
487 case REQ_LSTAT:
488 case REQ_FSTAT:
489 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
490 PL_laststatval = req->result;
491 PL_statcache = *(Stat_t *)(req->ptr2);
492 PUSHs (sv_2mortal (newSViv (req->result)));
493 break;
494
495 case REQ_READ:
496 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
497 *SvEND (req->sv1) = 0;
498 PUSHs (sv_2mortal (newSViv (req->result)));
499 break;
500
501 default:
502 PUSHs (sv_2mortal (newSViv (req->result)));
503 break;
504 }
505
506 errno = req->errorno;
507
508 PUTBACK;
509 call_sv (req->callback, G_VOID | G_EVAL);
510 SPAGAIN;
511
512 FREETMPS;
513 LEAVE;
514 }
515
516 if (req->grp)
517 {
518 aio_req grp = req->grp;
519
520 /* unlink request */
521 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
522 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
523
524 if (grp->grp_first == req)
525 grp->grp_first = req->grp_next;
526
527 aio_grp_dec (grp);
528 }
529
530 if (SvTRUE (ERRSV))
531 {
532 req_free (req);
533 croak (0);
534 }
152} 535}
153 536
154static void req_free (aio_req req) 537static void req_free (aio_req req)
155{ 538{
156 if (req->self) 539 if (req->self)
157 { 540 {
158 sv_unmagic (req->self, PERL_MAGIC_ext); 541 sv_unmagic (req->self, PERL_MAGIC_ext);
159 SvREFCNT_dec (req->self); 542 SvREFCNT_dec (req->self);
160 } 543 }
161 544
162 if (req->data)
163 SvREFCNT_dec (req->data);
164
165 if (req->fh)
166 SvREFCNT_dec (req->fh); 545 SvREFCNT_dec (req->fh);
167 546 SvREFCNT_dec (req->sv1);
168 if (req->fh2)
169 SvREFCNT_dec (req->fh2); 547 SvREFCNT_dec (req->sv2);
170
171 if (req->statdata)
172 Safefree (req->statdata);
173
174 if (req->callback)
175 SvREFCNT_dec (req->callback); 548 SvREFCNT_dec (req->callback);
176 549
177 if (req->type == REQ_READDIR && req->result >= 0) 550 if (req->flags & FLAG_PTR2_FREE)
178 free (req->data2ptr); 551 free (req->ptr2);
179 552
180 Safefree (req); 553 Safefree (req);
181} 554}
182 555
183static void 556static void req_cancel_subs (aio_req grp)
184poll_wait ()
185{ 557{
186 if (nreqs && !ress) 558 aio_req sub;
559
560 if (grp->type != REQ_GROUP)
561 return;
562
563 SvREFCNT_dec (grp->sv2);
564 grp->sv2 = 0;
565
566 for (sub = grp->grp_first; sub; sub = sub->grp_next)
567 req_cancel (sub);
568}
569
570static void req_cancel (aio_req req)
571{
572 req->flags |= FLAG_CANCELLED;
573
574 req_cancel_subs (req);
575}
576
577static void *aio_proc(void *arg);
578
579static void start_thread (void)
580{
581 sigset_t fullsigset, oldsigset;
582 pthread_attr_t attr;
583
584 worker *wrk = calloc (1, sizeof (worker));
585
586 if (!wrk)
587 croak ("unable to allocate worker thread data");
588
589 pthread_attr_init (&attr);
590 pthread_attr_setstacksize (&attr, STACKSIZE);
591 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
592#ifdef PTHREAD_SCOPE_PROCESS
593 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
594#endif
595
596 sigfillset (&fullsigset);
597
598 LOCK (wrklock);
599 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
600
601 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
187 { 602 {
603 wrk->prev = &wrk_first;
604 wrk->next = wrk_first.next;
605 wrk_first.next->prev = wrk;
606 wrk_first.next = wrk;
607 ++started;
608 }
609 else
610 free (wrk);
611
612 sigprocmask (SIG_SETMASK, &oldsigset, 0);
613 UNLOCK (wrklock);
614}
615
616static void maybe_start_thread ()
617{
618 if (get_nthreads () >= wanted)
619 return;
620
621 /* todo: maybe use idle here, but might be less exact */
622 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
623 return;
624
625 start_thread ();
626}
627
628static void req_send (aio_req req)
629{
630 ++nreqs;
631
632 LOCK (reqlock);
633 ++nready;
634 reqq_push (&req_queue, req);
635 pthread_cond_signal (&reqwait);
636 UNLOCK (reqlock);
637
638 maybe_start_thread ();
639}
640
641static void end_thread (void)
642{
643 aio_req req;
644
645 Newz (0, req, 1, aio_cb);
646
647 req->type = REQ_QUIT;
648 req->pri = PRI_MAX + PRI_BIAS;
649
650 LOCK (reqlock);
651 reqq_push (&req_queue, req);
652 pthread_cond_signal (&reqwait);
653 UNLOCK (reqlock);
654
655 LOCK (wrklock);
656 --started;
657 UNLOCK (wrklock);
658}
659
660static void set_max_idle (int nthreads)
661{
662 if (WORDACCESS_UNSAFE) LOCK (reqlock);
663 max_idle = nthreads <= 0 ? 1 : nthreads;
664 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665}
666
667static void min_parallel (int nthreads)
668{
669 if (wanted < nthreads)
670 wanted = nthreads;
671}
672
673static void max_parallel (int nthreads)
674{
675 if (wanted > nthreads)
676 wanted = nthreads;
677
678 while (started > wanted)
679 end_thread ();
680}
681
682static void poll_wait ()
683{
188 fd_set rfd; 684 fd_set rfd;
685
686 while (nreqs)
687 {
688 int size;
689 if (WORDACCESS_UNSAFE) LOCK (reslock);
690 size = res_queue.size;
691 if (WORDACCESS_UNSAFE) UNLOCK (reslock);
692
693 if (size)
694 return;
695
696 maybe_start_thread ();
697
189 FD_ZERO(&rfd); 698 FD_ZERO(&rfd);
190 FD_SET(respipe [0], &rfd); 699 FD_SET(respipe [0], &rfd);
191 700
192 select (respipe [0] + 1, &rfd, 0, 0, 0); 701 select (respipe [0] + 1, &rfd, 0, 0, 0);
193 } 702 }
194} 703}
195 704
196static int 705static int poll_cb ()
197poll_cb ()
198{ 706{
199 dSP; 707 dSP;
200 int count = 0; 708 int count = 0;
709 int maxreqs = max_poll_reqs;
201 int do_croak = 0; 710 int do_croak = 0;
711 struct timeval tv_start, tv_now;
202 aio_req req; 712 aio_req req;
713
714 if (max_poll_time)
715 gettimeofday (&tv_start, 0);
203 716
204 for (;;) 717 for (;;)
205 { 718 {
206 pthread_mutex_lock (&reslock); 719 for (;;)
207 req = ress;
208
209 if (req)
210 { 720 {
211 ress = req->next; 721 maybe_start_thread ();
212 722
723 LOCK (reslock);
724 req = reqq_shift (&res_queue);
725
213 if (!ress) 726 if (req)
214 { 727 {
728 --npending;
729
730 if (!res_queue.size)
731 {
215 /* read any signals sent by the worker threads */ 732 /* read any signals sent by the worker threads */
216 char buf [32]; 733 char buf [32];
217 while (read (respipe [0], buf, 32) == 32) 734 while (read (respipe [0], buf, 32) == 32)
735 ;
218 ; 736 }
219
220 rese = 0;
221 } 737 }
222 }
223 738
224 pthread_mutex_unlock (&reslock); 739 UNLOCK (reslock);
225 740
226 if (!req) 741 if (!req)
227 break; 742 break;
228 743
229 nreqs--; 744 --nreqs;
230 745
231 if (req->type == REQ_QUIT)
232 started--;
233 else
234 {
235 int errorno = errno;
236 errno = req->errorno;
237
238 if (req->type == REQ_READ) 746 if (req->type == REQ_GROUP && req->size)
239 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
240
241 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
242 SvREADONLY_off (req->data);
243
244 if (req->statdata)
245 { 747 {
246 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 748 req->int1 = 1; /* mark request as delayed */
247 PL_laststatval = req->result; 749 continue;
248 PL_statcache = *(req->statdata);
249 }
250
251 ENTER;
252 PUSHMARK (SP);
253
254 if (req->type == REQ_READDIR)
255 {
256 SV *rv = &PL_sv_undef;
257
258 if (req->result >= 0)
259 {
260 char *buf = req->data2ptr;
261 AV *av = newAV ();
262
263 while (req->result)
264 {
265 SV *sv = newSVpv (buf, 0);
266
267 av_push (av, sv);
268 buf += SvCUR (sv) + 1;
269 req->result--;
270 }
271
272 rv = sv_2mortal (newRV_noinc ((SV *)av));
273 }
274
275 XPUSHs (rv);
276 } 750 }
277 else 751 else
278 { 752 {
279 XPUSHs (sv_2mortal (newSViv (req->result))); 753 req_invoke (req);
280 754
281 if (req->type == REQ_OPEN) 755 count++;
282 {
283 /* convert fd to fh */
284 SV *fh;
285
286 PUTBACK;
287 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
288 SPAGAIN;
289
290 fh = SvREFCNT_inc (POPs);
291
292 PUSHMARK (SP);
293 XPUSHs (sv_2mortal (fh));
294 }
295 } 756 }
296 757
297 if (SvOK (req->callback) && !req->cancelled) 758 req_free (req);
759
760 if (maxreqs && !--maxreqs)
761 break;
762
763 if (max_poll_time)
298 { 764 {
299 PUTBACK; 765 gettimeofday (&tv_now, 0);
300 call_sv (req->callback, G_VOID | G_EVAL);
301 SPAGAIN;
302 766
303 if (SvTRUE (ERRSV)) 767 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
304 { 768 break;
305 req_free (req);
306 croak (0);
307 }
308 } 769 }
309
310 LEAVE;
311
312 errno = errorno;
313 count++;
314 } 770 }
315 771
316 req_free (req); 772 if (nreqs <= max_outstanding)
773 break;
774
775 poll_wait ();
776
777 ++maxreqs;
317 } 778 }
318 779
319 return count; 780 return count;
320}
321
322static void *aio_proc(void *arg);
323
324static void
325start_thread (void)
326{
327 sigset_t fullsigset, oldsigset;
328 pthread_t tid;
329 pthread_attr_t attr;
330
331 pthread_attr_init (&attr);
332 pthread_attr_setstacksize (&attr, STACKSIZE);
333 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
334
335 sigfillset (&fullsigset);
336 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
337
338 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
339 started++;
340
341 sigprocmask (SIG_SETMASK, &oldsigset, 0);
342}
343
344static void
345req_send (aio_req req)
346{
347 while (started < wanted && nreqs >= started)
348 start_thread ();
349
350 nreqs++;
351
352 pthread_mutex_lock (&reqlock);
353
354 req->next = 0;
355
356 if (reqe)
357 {
358 reqe->next = req;
359 reqe = req;
360 }
361 else
362 reqe = reqs = req;
363
364 pthread_cond_signal (&reqwait);
365 pthread_mutex_unlock (&reqlock);
366
367 if (nreqs > max_outstanding)
368 for (;;)
369 {
370 poll_cb ();
371
372 if (nreqs <= max_outstanding)
373 break;
374
375 poll_wait ();
376 }
377}
378
379static void
380end_thread (void)
381{
382 aio_req req;
383 Newz (0, req, 1, aio_cb);
384 req->type = REQ_QUIT;
385
386 req_send (req);
387}
388
389static void min_parallel (int nthreads)
390{
391 if (wanted < nthreads)
392 wanted = nthreads;
393}
394
395static void max_parallel (int nthreads)
396{
397 int cur = started;
398
399 if (wanted > nthreads)
400 wanted = nthreads;
401
402 while (cur > wanted)
403 {
404 end_thread ();
405 cur--;
406 }
407
408 while (started > wanted)
409 {
410 poll_wait ();
411 poll_cb ();
412 }
413} 781}
414 782
415static void create_pipe () 783static void create_pipe ()
416{ 784{
417 if (pipe (respipe)) 785 if (pipe (respipe))
436 * normal read/write by using a mutex. slows down execution a lot, 804 * normal read/write by using a mutex. slows down execution a lot,
437 * but that's your problem, not mine. 805 * but that's your problem, not mine.
438 */ 806 */
439static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; 807static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
440 808
441static ssize_t 809static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
442pread (int fd, void *buf, size_t count, off_t offset)
443{ 810{
444 ssize_t res; 811 ssize_t res;
445 off_t ooffset; 812 off_t ooffset;
446 813
447 pthread_mutex_lock (&preadwritelock); 814 LOCK (preadwritelock);
448 ooffset = lseek (fd, 0, SEEK_CUR); 815 ooffset = lseek (fd, 0, SEEK_CUR);
449 lseek (fd, offset, SEEK_SET); 816 lseek (fd, offset, SEEK_SET);
450 res = read (fd, buf, count); 817 res = read (fd, buf, count);
451 lseek (fd, ooffset, SEEK_SET); 818 lseek (fd, ooffset, SEEK_SET);
452 pthread_mutex_unlock (&preadwritelock); 819 UNLOCK (preadwritelock);
453 820
454 return res; 821 return res;
455} 822}
456 823
457static ssize_t
458pwrite (int fd, void *buf, size_t count, off_t offset) 824static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
459{ 825{
460 ssize_t res; 826 ssize_t res;
461 off_t ooffset; 827 off_t ooffset;
462 828
463 pthread_mutex_lock (&preadwritelock); 829 LOCK (preadwritelock);
464 ooffset = lseek (fd, 0, SEEK_CUR); 830 ooffset = lseek (fd, 0, SEEK_CUR);
465 lseek (fd, offset, SEEK_SET); 831 lseek (fd, offset, SEEK_SET);
466 res = write (fd, buf, count); 832 res = write (fd, buf, count);
467 lseek (fd, offset, SEEK_SET); 833 lseek (fd, offset, SEEK_SET);
468 pthread_mutex_unlock (&preadwritelock); 834 UNLOCK (preadwritelock);
469 835
470 return res; 836 return res;
471} 837}
472#endif 838#endif
473 839
474#if !HAVE_FDATASYNC 840#if !HAVE_FDATASYNC
475# define fdatasync fsync 841# define fdatasync fsync
476#endif 842#endif
477 843
478#if !HAVE_READAHEAD 844#if !HAVE_READAHEAD
479# define readahead aio_readahead 845# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
480 846
481static ssize_t 847static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
482readahead (int fd, off_t offset, size_t count)
483{ 848{
484 char readahead_buf[4096]; 849 dBUF;
485 850
486 while (count > 0) 851 while (count > 0)
487 { 852 {
488 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 853 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
489 854
490 pread (fd, readahead_buf, len, offset); 855 pread (fd, aio_buf, len, offset);
491 offset += len; 856 offset += len;
492 count -= len; 857 count -= len;
493 } 858 }
494 859
495 errno = 0; 860 errno = 0;
496} 861}
862
497#endif 863#endif
498 864
499#if !HAVE_READDIR_R 865#if !HAVE_READDIR_R
500# define readdir_r aio_readdir_r 866# define readdir_r aio_readdir_r
501 867
502static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; 868static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
503 869
504static int
505readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) 870static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
506{ 871{
507 struct dirent *e; 872 struct dirent *e;
508 int errorno; 873 int errorno;
509 874
510 pthread_mutex_lock (&readdirlock); 875 LOCK (readdirlock);
511 876
512 e = readdir (dirp); 877 e = readdir (dirp);
513 errorno = errno; 878 errorno = errno;
514 879
515 if (e) 880 if (e)
518 strcpy (ent->d_name, e->d_name); 883 strcpy (ent->d_name, e->d_name);
519 } 884 }
520 else 885 else
521 *res = 0; 886 *res = 0;
522 887
523 pthread_mutex_unlock (&readdirlock); 888 UNLOCK (readdirlock);
524 889
525 errno = errorno; 890 errno = errorno;
526 return e ? 0 : -1; 891 return e ? 0 : -1;
527} 892}
528#endif 893#endif
529 894
530/* sendfile always needs emulation */ 895/* sendfile always needs emulation */
531static ssize_t
532sendfile_ (int ofd, int ifd, off_t offset, size_t count) 896static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
533{ 897{
534 ssize_t res; 898 ssize_t res;
535 899
536 if (!count) 900 if (!count)
537 return 0; 901 return 0;
548 { 912 {
549 off_t sbytes; 913 off_t sbytes;
550 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 914 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
551 915
552 if (res < 0 && sbytes) 916 if (res < 0 && sbytes)
553 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 917 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
554 res = sbytes; 918 res = sbytes;
555 } 919 }
556 920
557# elif __hpux 921# elif __hpux
558 res = sendfile (ofd, ifd, offset, count, 0, 0); 922 res = sendfile (ofd, ifd, offset, count, 0, 0);
586#endif 950#endif
587 ) 951 )
588 ) 952 )
589 { 953 {
590 /* emulate sendfile. this is a major pain in the ass */ 954 /* emulate sendfile. this is a major pain in the ass */
591 char buf[4096]; 955 dBUF;
956
592 res = 0; 957 res = 0;
593 958
594 while (count) 959 while (count)
595 { 960 {
596 ssize_t cnt; 961 ssize_t cnt;
597 962
598 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); 963 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
599 964
600 if (cnt <= 0) 965 if (cnt <= 0)
601 { 966 {
602 if (cnt && !res) res = -1; 967 if (cnt && !res) res = -1;
603 break; 968 break;
604 } 969 }
605 970
606 cnt = write (ofd, buf, cnt); 971 cnt = write (ofd, aio_buf, cnt);
607 972
608 if (cnt <= 0) 973 if (cnt <= 0)
609 { 974 {
610 if (cnt && !res) res = -1; 975 if (cnt && !res) res = -1;
611 break; 976 break;
619 984
620 return res; 985 return res;
621} 986}
622 987
623/* read a full directory */ 988/* read a full directory */
624static int 989static void scandir_ (aio_req req, worker *self)
625scandir_ (const char *path, void **namesp)
626{ 990{
627 DIR *dirp = opendir (path); 991 DIR *dirp;
628 union 992 union
629 { 993 {
630 struct dirent d; 994 struct dirent d;
631 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; 995 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
632 } u; 996 } *u;
633 struct dirent *entp; 997 struct dirent *entp;
634 char *name, *names; 998 char *name, *names;
635 int memlen = 4096; 999 int memlen = 4096;
636 int memofs = 0; 1000 int memofs = 0;
637 int res = 0; 1001 int res = 0;
638 int errorno; 1002 int errorno;
639 1003
640 if (!dirp) 1004 LOCK (wrklock);
641 return -1; 1005 self->dirp = dirp = opendir (req->ptr1);
642 1006 self->dbuf = u = malloc (sizeof (*u));
1007 req->flags |= FLAG_PTR2_FREE;
643 names = malloc (memlen); 1008 req->ptr2 = names = malloc (memlen);
1009 UNLOCK (wrklock);
1010
1011 if (dirp && u && names)
1012 for (;;)
1013 {
1014 errno = 0;
1015 readdir_r (dirp, &u->d, &entp);
1016
1017 if (!entp)
1018 break;
1019
1020 name = entp->d_name;
1021
1022 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1023 {
1024 int len = strlen (name) + 1;
1025
1026 res++;
1027
1028 while (memofs + len > memlen)
1029 {
1030 memlen *= 2;
1031 LOCK (wrklock);
1032 req->ptr2 = names = realloc (names, memlen);
1033 UNLOCK (wrklock);
1034
1035 if (!names)
1036 break;
1037 }
1038
1039 memcpy (names + memofs, name, len);
1040 memofs += len;
1041 }
1042 }
1043
1044 if (errno)
1045 res = -1;
1046
1047 req->result = res;
1048}
1049
1050/*****************************************************************************/
1051
1052static void *aio_proc (void *thr_arg)
1053{
1054 aio_req req;
1055 struct timespec ts;
1056 worker *self = (worker *)thr_arg;
1057
1058 /* try to distribute timeouts somewhat evenly */
1059 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1060 * (1000000000UL / 1024UL);
644 1061
645 for (;;) 1062 for (;;)
646 { 1063 {
647 errno = 0, readdir_r (dirp, &u.d, &entp); 1064 ts.tv_sec = time (0) + IDLE_TIMEOUT;
648 1065
649 if (!entp) 1066 LOCK (reqlock);
650 break;
651
652 name = entp->d_name;
653
654 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
655 {
656 int len = strlen (name) + 1;
657
658 res++;
659
660 while (memofs + len > memlen)
661 {
662 memlen *= 2;
663 names = realloc (names, memlen);
664 if (!names)
665 break;
666 }
667
668 memcpy (names + memofs, name, len);
669 memofs += len;
670 }
671 }
672
673 errorno = errno;
674 closedir (dirp);
675
676 if (errorno)
677 {
678 free (names);
679 errno = errorno;
680 res = -1;
681 }
682
683 *namesp = (void *)names;
684 return res;
685}
686
687/*****************************************************************************/
688
689static void *
690aio_proc (void *thr_arg)
691{
692 aio_req req;
693 int type;
694
695 do
696 {
697 pthread_mutex_lock (&reqlock);
698 1067
699 for (;;) 1068 for (;;)
700 { 1069 {
701 req = reqs; 1070 self->req = req = reqq_shift (&req_queue);
702
703 if (reqs)
704 {
705 reqs = reqs->next;
706 if (!reqs) reqe = 0;
707 }
708 1071
709 if (req) 1072 if (req)
710 break; 1073 break;
711 1074
1075 ++idle;
1076
1077 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1078 == ETIMEDOUT)
1079 {
1080 if (idle > max_idle)
1081 {
1082 --idle;
1083 UNLOCK (reqlock);
1084 LOCK (wrklock);
1085 --started;
1086 UNLOCK (wrklock);
1087 goto quit;
1088 }
1089
1090 /* we are allowed to idle, so do so without any timeout */
712 pthread_cond_wait (&reqwait, &reqlock); 1091 pthread_cond_wait (&reqwait, &reqlock);
1092 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1093 }
1094
1095 --idle;
713 } 1096 }
714 1097
715 pthread_mutex_unlock (&reqlock); 1098 --nready;
1099
1100 UNLOCK (reqlock);
716 1101
717 errno = 0; /* strictly unnecessary */ 1102 errno = 0; /* strictly unnecessary */
718 1103
719 if (!req->cancelled) 1104 if (!(req->flags & FLAG_CANCELLED))
720 switch (req->type) 1105 switch (req->type)
721 { 1106 {
722 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 1107 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
723 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 1108 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
724 1109
725 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 1110 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
726 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; 1111 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
727 1112
728 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 1113 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
729 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 1114 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
730 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 1115 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
731 1116
732 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 1117 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
733 case REQ_CLOSE: req->result = close (req->fd); break; 1118 case REQ_CLOSE: req->result = close (req->int1); break;
734 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 1119 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
735 case REQ_RMDIR: req->result = rmdir (req->dataptr); break; 1120 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
736 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; 1121 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
737 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; 1122 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
738 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 1123 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1124 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1125 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
739 1126
740 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 1127 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
741 case REQ_FSYNC: req->result = fsync (req->fd); break; 1128 case REQ_FSYNC: req->result = fsync (req->int1); break;
742 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; 1129 case REQ_READDIR: scandir_ (req, self); break;
1130
1131 case REQ_BUSY:
1132 {
1133 struct timeval tv;
1134
1135 tv.tv_sec = req->int1;
1136 tv.tv_usec = req->int2;
1137
1138 req->result = select (0, 0, 0, 0, &tv);
1139 }
1140
1141 case REQ_GROUP:
1142 case REQ_NOP:
1143 break;
743 1144
744 case REQ_QUIT: 1145 case REQ_QUIT:
745 break; 1146 goto quit;
746 1147
747 default: 1148 default:
748 req->result = ENOSYS; 1149 req->result = ENOSYS;
749 break; 1150 break;
750 } 1151 }
751 1152
752 req->errorno = errno; 1153 req->errorno = errno;
753 1154
754 pthread_mutex_lock (&reslock); 1155 LOCK (reslock);
755 1156
756 req->next = 0; 1157 ++npending;
757 1158
758 if (rese) 1159 if (!reqq_push (&res_queue, req))
759 {
760 rese->next = req;
761 rese = req;
762 }
763 else
764 {
765 rese = ress = req;
766
767 /* write a dummy byte to the pipe so fh becomes ready */ 1160 /* write a dummy byte to the pipe so fh becomes ready */
768 write (respipe [1], &respipe, 1); 1161 write (respipe [1], &respipe, 1);
769 }
770 1162
771 pthread_mutex_unlock (&reslock); 1163 self->req = 0;
1164 worker_clear (self);
1165
1166 UNLOCK (reslock);
772 } 1167 }
773 while (type != REQ_QUIT); 1168
1169quit:
1170 LOCK (wrklock);
1171 worker_free (self);
1172 UNLOCK (wrklock);
774 1173
775 return 0; 1174 return 0;
776} 1175}
777 1176
778/*****************************************************************************/ 1177/*****************************************************************************/
779 1178
780static void atfork_prepare (void) 1179static void atfork_prepare (void)
781{ 1180{
782 pthread_mutex_lock (&reqlock); 1181 LOCK (wrklock);
783 pthread_mutex_lock (&reslock); 1182 LOCK (reqlock);
1183 LOCK (reslock);
784#if !HAVE_PREADWRITE 1184#if !HAVE_PREADWRITE
785 pthread_mutex_lock (&preadwritelock); 1185 LOCK (preadwritelock);
786#endif 1186#endif
787#if !HAVE_READDIR_R 1187#if !HAVE_READDIR_R
788 pthread_mutex_lock (&readdirlock); 1188 LOCK (readdirlock);
789#endif 1189#endif
790} 1190}
791 1191
792static void atfork_parent (void) 1192static void atfork_parent (void)
793{ 1193{
794#if !HAVE_READDIR_R 1194#if !HAVE_READDIR_R
795 pthread_mutex_unlock (&readdirlock); 1195 UNLOCK (readdirlock);
796#endif 1196#endif
797#if !HAVE_PREADWRITE 1197#if !HAVE_PREADWRITE
798 pthread_mutex_unlock (&preadwritelock); 1198 UNLOCK (preadwritelock);
799#endif 1199#endif
800 pthread_mutex_unlock (&reslock); 1200 UNLOCK (reslock);
801 pthread_mutex_unlock (&reqlock); 1201 UNLOCK (reqlock);
1202 UNLOCK (wrklock);
802} 1203}
803 1204
804static void atfork_child (void) 1205static void atfork_child (void)
805{ 1206{
806 aio_req prv; 1207 aio_req prv;
807 1208
808 started = 0; 1209 while (prv = reqq_shift (&req_queue))
1210 req_free (prv);
809 1211
810 while (reqs) 1212 while (prv = reqq_shift (&res_queue))
1213 req_free (prv);
1214
1215 while (wrk_first.next != &wrk_first)
811 { 1216 {
812 prv = reqs; 1217 worker *wrk = wrk_first.next;
813 reqs = prv->next; 1218
1219 if (wrk->req)
1220 req_free (wrk->req);
1221
1222 worker_clear (wrk);
814 req_free (prv); 1223 worker_free (wrk);
815 } 1224 }
816 1225
817 reqs = reqe = 0; 1226 started = 0;
818 1227 idle = 0;
819 while (ress) 1228 nreqs = 0;
820 { 1229 nready = 0;
821 prv = ress; 1230 npending = 0;
822 ress = prv->next;
823 req_free (prv);
824 }
825
826 ress = rese = 0;
827 1231
828 close (respipe [0]); 1232 close (respipe [0]);
829 close (respipe [1]); 1233 close (respipe [1]);
830 create_pipe (); 1234 create_pipe ();
831 1235
832 atfork_parent (); 1236 atfork_parent ();
833} 1237}
834 1238
835#define dREQ \ 1239#define dREQ \
836 aio_req req; \ 1240 aio_req req; \
1241 int req_pri = next_pri; \
1242 next_pri = DEFAULT_PRI + PRI_BIAS; \
837 \ 1243 \
838 if (SvOK (callback) && !SvROK (callback)) \ 1244 if (SvOK (callback) && !SvROK (callback)) \
839 croak ("callback must be undef or of reference type"); \ 1245 croak ("callback must be undef or of reference type"); \
840 \ 1246 \
841 Newz (0, req, 1, aio_cb); \ 1247 Newz (0, req, 1, aio_cb); \
842 if (!req) \ 1248 if (!req) \
843 croak ("out of memory during aio_req allocation"); \ 1249 croak ("out of memory during aio_req allocation"); \
844 \ 1250 \
845 req->callback = newSVsv (callback) 1251 req->callback = newSVsv (callback); \
1252 req->pri = req_pri
846 1253
847#define REQ_SEND \ 1254#define REQ_SEND \
848 req_send (req); \ 1255 req_send (req); \
849 \ 1256 \
850 if (GIMME_V != G_VOID) \ 1257 if (GIMME_V != G_VOID) \
851 XPUSHs (req_sv (req)); 1258 XPUSHs (req_sv (req, AIO_REQ_KLASS));
852 1259
853MODULE = IO::AIO PACKAGE = IO::AIO 1260MODULE = IO::AIO PACKAGE = IO::AIO
854 1261
855PROTOTYPES: ENABLE 1262PROTOTYPES: ENABLE
856 1263
857BOOT: 1264BOOT:
858{ 1265{
859 HV *stash = gv_stashpv ("IO::AIO", 1); 1266 HV *stash = gv_stashpv ("IO::AIO", 1);
1267
860 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1268 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
861 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1269 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
862 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); 1270 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1271 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1272 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1273 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
863 1274
864 create_pipe (); 1275 create_pipe ();
865 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1276 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
866} 1277}
867 1278
868void 1279void
869min_parallel (nthreads) 1280max_poll_reqs (int nreqs)
870 int nthreads
871 PROTOTYPE: $ 1281 PROTOTYPE: $
1282 CODE:
1283 max_poll_reqs = nreqs;
872 1284
873void 1285void
874max_parallel (nthreads) 1286max_poll_time (double nseconds)
875 int nthreads
876 PROTOTYPE: $ 1287 PROTOTYPE: $
1288 CODE:
1289 max_poll_time = nseconds * AIO_TICKS;
1290
1291void
1292min_parallel (int nthreads)
1293 PROTOTYPE: $
1294
1295void
1296max_parallel (int nthreads)
1297 PROTOTYPE: $
1298
1299void
1300max_idle (int nthreads)
1301 PROTOTYPE: $
1302 CODE:
1303 set_max_idle (nthreads);
877 1304
878int 1305int
879max_outstanding (nreqs) 1306max_outstanding (int maxreqs)
880 int nreqs 1307 PROTOTYPE: $
881 PROTOTYPE: $
882 CODE: 1308 CODE:
883 RETVAL = max_outstanding; 1309 RETVAL = max_outstanding;
884 max_outstanding = nreqs; 1310 max_outstanding = maxreqs;
1311 OUTPUT:
1312 RETVAL
885 1313
886void 1314void
887aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1315aio_open (pathname,flags,mode,callback=&PL_sv_undef)
888 SV * pathname 1316 SV8 * pathname
889 int flags 1317 int flags
890 int mode 1318 int mode
891 SV * callback 1319 SV * callback
892 PROTOTYPE: $$$;$ 1320 PROTOTYPE: $$$;$
893 PPCODE: 1321 PPCODE:
894{ 1322{
895 dREQ; 1323 dREQ;
896 1324
897 req->type = REQ_OPEN; 1325 req->type = REQ_OPEN;
898 req->data = newSVsv (pathname); 1326 req->sv1 = newSVsv (pathname);
899 req->dataptr = SvPVbyte_nolen (req->data); 1327 req->ptr1 = SvPVbyte_nolen (req->sv1);
900 req->fd = flags; 1328 req->int1 = flags;
901 req->mode = mode; 1329 req->mode = mode;
902 1330
903 REQ_SEND; 1331 REQ_SEND;
904} 1332}
905 1333
915 PPCODE: 1343 PPCODE:
916{ 1344{
917 dREQ; 1345 dREQ;
918 1346
919 req->type = ix; 1347 req->type = ix;
920 req->fh = newSVsv (fh); 1348 req->fh = newSVsv (fh);
921 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1349 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
922 1350
923 REQ_SEND (req); 1351 REQ_SEND (req);
924} 1352}
925 1353
926void 1354void
927aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1355aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
928 SV * fh 1356 SV * fh
929 UV offset 1357 UV offset
930 UV length 1358 UV length
931 SV * data 1359 SV8 * data
932 UV dataoffset 1360 UV dataoffset
933 SV * callback 1361 SV * callback
934 ALIAS: 1362 ALIAS:
935 aio_read = REQ_READ 1363 aio_read = REQ_READ
936 aio_write = REQ_WRITE 1364 aio_write = REQ_WRITE
937 PROTOTYPE: $$$$$;$ 1365 PROTOTYPE: $$$$$;$
938 PPCODE: 1366 PPCODE:
939{ 1367{
940 aio_req req;
941 STRLEN svlen; 1368 STRLEN svlen;
942 char *svptr = SvPVbyte (data, svlen); 1369 char *svptr = SvPVbyte (data, svlen);
943 1370
944 SvUPGRADE (data, SVt_PV); 1371 SvUPGRADE (data, SVt_PV);
945 SvPOK_on (data); 1372 SvPOK_on (data);
967 1394
968 { 1395 {
969 dREQ; 1396 dREQ;
970 1397
971 req->type = ix; 1398 req->type = ix;
972 req->fh = newSVsv (fh); 1399 req->fh = newSVsv (fh);
973 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1400 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
974 : IoOFP (sv_2io (fh))); 1401 : IoOFP (sv_2io (fh)));
975 req->offset = offset; 1402 req->offs = offset;
976 req->length = length; 1403 req->size = length;
977 req->data = SvREFCNT_inc (data); 1404 req->sv1 = SvREFCNT_inc (data);
978 req->dataptr = (char *)svptr + dataoffset; 1405 req->ptr1 = (char *)svptr + dataoffset;
1406 req->stroffset = dataoffset;
979 1407
980 if (!SvREADONLY (data)) 1408 if (!SvREADONLY (data))
981 { 1409 {
982 SvREADONLY_on (data); 1410 SvREADONLY_on (data);
983 req->data2ptr = (void *)data; 1411 req->flags |= FLAG_SV1_RO_OFF;
984 } 1412 }
985 1413
986 REQ_SEND; 1414 REQ_SEND;
987 } 1415 }
1416}
1417
1418void
1419aio_readlink (path,callback=&PL_sv_undef)
1420 SV8 * path
1421 SV * callback
1422 PROTOTYPE: $$;$
1423 PPCODE:
1424{
1425 SV *data;
1426 dREQ;
1427
1428 data = newSV (NAME_MAX);
1429 SvPOK_on (data);
1430
1431 req->type = REQ_READLINK;
1432 req->fh = newSVsv (path);
1433 req->ptr2 = SvPVbyte_nolen (req->fh);
1434 req->sv1 = data;
1435 req->ptr1 = SvPVbyte_nolen (data);
1436
1437 REQ_SEND;
988} 1438}
989 1439
990void 1440void
991aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1441aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
992 SV * out_fh 1442 SV * out_fh
998 PPCODE: 1448 PPCODE:
999{ 1449{
1000 dREQ; 1450 dREQ;
1001 1451
1002 req->type = REQ_SENDFILE; 1452 req->type = REQ_SENDFILE;
1003 req->fh = newSVsv (out_fh); 1453 req->fh = newSVsv (out_fh);
1004 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1454 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1005 req->fh2 = newSVsv (in_fh); 1455 req->sv2 = newSVsv (in_fh);
1006 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1456 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1007 req->offset = in_offset; 1457 req->offs = in_offset;
1008 req->length = length; 1458 req->size = length;
1009 1459
1010 REQ_SEND; 1460 REQ_SEND;
1011} 1461}
1012 1462
1013void 1463void
1020 PPCODE: 1470 PPCODE:
1021{ 1471{
1022 dREQ; 1472 dREQ;
1023 1473
1024 req->type = REQ_READAHEAD; 1474 req->type = REQ_READAHEAD;
1025 req->fh = newSVsv (fh); 1475 req->fh = newSVsv (fh);
1026 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1476 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1027 req->offset = offset; 1477 req->offs = offset;
1028 req->length = length; 1478 req->size = length;
1029 1479
1030 REQ_SEND; 1480 REQ_SEND;
1031} 1481}
1032 1482
1033void 1483void
1034aio_stat (fh_or_path,callback=&PL_sv_undef) 1484aio_stat (fh_or_path,callback=&PL_sv_undef)
1035 SV * fh_or_path 1485 SV8 * fh_or_path
1036 SV * callback 1486 SV * callback
1037 ALIAS: 1487 ALIAS:
1038 aio_stat = REQ_STAT 1488 aio_stat = REQ_STAT
1039 aio_lstat = REQ_LSTAT 1489 aio_lstat = REQ_LSTAT
1040 PPCODE: 1490 PPCODE:
1041{ 1491{
1042 dREQ; 1492 dREQ;
1043 1493
1044 New (0, req->statdata, 1, Stat_t); 1494 req->ptr2 = malloc (sizeof (Stat_t));
1045 if (!req->statdata) 1495 if (!req->ptr2)
1046 { 1496 {
1047 req_free (req); 1497 req_free (req);
1048 croak ("out of memory during aio_req->statdata allocation"); 1498 croak ("out of memory during aio_stat statdata allocation");
1049 } 1499 }
1500
1501 req->flags |= FLAG_PTR2_FREE;
1050 1502
1051 if (SvPOK (fh_or_path)) 1503 if (SvPOK (fh_or_path))
1052 { 1504 {
1053 req->type = ix; 1505 req->type = ix;
1054 req->data = newSVsv (fh_or_path); 1506 req->sv1 = newSVsv (fh_or_path);
1055 req->dataptr = SvPVbyte_nolen (req->data); 1507 req->ptr1 = SvPVbyte_nolen (req->sv1);
1056 } 1508 }
1057 else 1509 else
1058 { 1510 {
1059 req->type = REQ_FSTAT; 1511 req->type = REQ_FSTAT;
1060 req->fh = newSVsv (fh_or_path); 1512 req->fh = newSVsv (fh_or_path);
1061 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1513 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1062 } 1514 }
1063 1515
1064 REQ_SEND; 1516 REQ_SEND;
1065} 1517}
1066 1518
1067void 1519void
1068aio_unlink (pathname,callback=&PL_sv_undef) 1520aio_unlink (pathname,callback=&PL_sv_undef)
1069 SV * pathname 1521 SV8 * pathname
1070 SV * callback 1522 SV * callback
1071 ALIAS: 1523 ALIAS:
1072 aio_unlink = REQ_UNLINK 1524 aio_unlink = REQ_UNLINK
1073 aio_rmdir = REQ_RMDIR 1525 aio_rmdir = REQ_RMDIR
1074 aio_readdir = REQ_READDIR 1526 aio_readdir = REQ_READDIR
1075 PPCODE: 1527 PPCODE:
1076{ 1528{
1077 dREQ; 1529 dREQ;
1078 1530
1079 req->type = ix; 1531 req->type = ix;
1080 req->data = newSVsv (pathname); 1532 req->sv1 = newSVsv (pathname);
1081 req->dataptr = SvPVbyte_nolen (req->data); 1533 req->ptr1 = SvPVbyte_nolen (req->sv1);
1082 1534
1083 REQ_SEND; 1535 REQ_SEND;
1084} 1536}
1085 1537
1086void 1538void
1087aio_link (oldpath,newpath,callback=&PL_sv_undef) 1539aio_link (oldpath,newpath,callback=&PL_sv_undef)
1088 SV * oldpath 1540 SV8 * oldpath
1089 SV * newpath 1541 SV8 * newpath
1090 SV * callback 1542 SV * callback
1091 ALIAS: 1543 ALIAS:
1092 aio_link = REQ_LINK 1544 aio_link = REQ_LINK
1093 aio_symlink = REQ_SYMLINK 1545 aio_symlink = REQ_SYMLINK
1094 aio_rename = REQ_RENAME 1546 aio_rename = REQ_RENAME
1095 PPCODE: 1547 PPCODE:
1096{ 1548{
1097 dREQ; 1549 dREQ;
1098 1550
1099 req->type = ix; 1551 req->type = ix;
1100 req->fh = newSVsv (oldpath); 1552 req->fh = newSVsv (oldpath);
1101 req->data2ptr = SvPVbyte_nolen (req->fh); 1553 req->ptr2 = SvPVbyte_nolen (req->fh);
1102 req->data = newSVsv (newpath); 1554 req->sv1 = newSVsv (newpath);
1103 req->dataptr = SvPVbyte_nolen (req->data); 1555 req->ptr1 = SvPVbyte_nolen (req->sv1);
1104 1556
1105 REQ_SEND; 1557 REQ_SEND;
1106} 1558}
1107 1559
1108#if 0
1109
1110# undocumented, because it does not cancel active requests
1111void 1560void
1112cancel_most_requests () 1561aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1562 SV8 * pathname
1563 SV * callback
1564 UV mode
1565 UV dev
1566 PPCODE:
1567{
1568 dREQ;
1569
1570 req->type = REQ_MKNOD;
1571 req->sv1 = newSVsv (pathname);
1572 req->ptr1 = SvPVbyte_nolen (req->sv1);
1573 req->mode = (mode_t)mode;
1574 req->offs = dev;
1575
1576 REQ_SEND;
1577}
1578
1579void
1580aio_busy (delay,callback=&PL_sv_undef)
1581 double delay
1582 SV * callback
1583 PPCODE:
1584{
1585 dREQ;
1586
1587 req->type = REQ_BUSY;
1588 req->int1 = delay < 0. ? 0 : delay;
1589 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1590
1591 REQ_SEND;
1592}
1593
1594void
1595aio_group (callback=&PL_sv_undef)
1596 SV * callback
1113 PROTOTYPE: 1597 PROTOTYPE: ;$
1114 CODE: 1598 PPCODE:
1115{ 1599{
1116 aio_req *req; 1600 dREQ;
1117 1601
1118 pthread_mutex_lock (&reqlock); 1602 req->type = REQ_GROUP;
1119 for (req = reqs; req; req = req->next)
1120 req->flags |= 1;
1121 pthread_mutex_unlock (&reqlock);
1122 1603
1123 pthread_mutex_lock (&reslock); 1604 req_send (req);
1124 for (req = ress; req; req = req->next) 1605 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1125 req->flags |= 1;
1126 pthread_mutex_unlock (&reslock);
1127} 1606}
1128 1607
1129#endif 1608void
1609aio_nop (callback=&PL_sv_undef)
1610 SV * callback
1611 PPCODE:
1612{
1613 dREQ;
1614
1615 req->type = REQ_NOP;
1616
1617 REQ_SEND;
1618}
1619
1620int
1621aioreq_pri (int pri = 0)
1622 PROTOTYPE: ;$
1623 CODE:
1624 RETVAL = next_pri - PRI_BIAS;
1625 if (items > 0)
1626 {
1627 if (pri < PRI_MIN) pri = PRI_MIN;
1628 if (pri > PRI_MAX) pri = PRI_MAX;
1629 next_pri = pri + PRI_BIAS;
1630 }
1631 OUTPUT:
1632 RETVAL
1633
1634void
1635aioreq_nice (int nice = 0)
1636 CODE:
1637 nice = next_pri - nice;
1638 if (nice < PRI_MIN) nice = PRI_MIN;
1639 if (nice > PRI_MAX) nice = PRI_MAX;
1640 next_pri = nice + PRI_BIAS;
1130 1641
1131void 1642void
1132flush () 1643flush ()
1133 PROTOTYPE: 1644 PROTOTYPE:
1134 CODE: 1645 CODE:
1135 while (nreqs) 1646 while (nreqs)
1136 { 1647 {
1137 poll_wait (); 1648 poll_wait ();
1138 poll_cb (); 1649 poll_cb (0);
1139 } 1650 }
1140 1651
1141void 1652void
1142poll() 1653poll()
1143 PROTOTYPE: 1654 PROTOTYPE:
1144 CODE: 1655 CODE:
1145 if (nreqs) 1656 if (nreqs)
1146 { 1657 {
1147 poll_wait (); 1658 poll_wait ();
1148 poll_cb (); 1659 poll_cb (0);
1149 } 1660 }
1150 1661
1151int 1662int
1152poll_fileno() 1663poll_fileno()
1153 PROTOTYPE: 1664 PROTOTYPE:
1177 CODE: 1688 CODE:
1178 RETVAL = nreqs; 1689 RETVAL = nreqs;
1179 OUTPUT: 1690 OUTPUT:
1180 RETVAL 1691 RETVAL
1181 1692
1182MODULE = IO::AIO PACKAGE = IO::AIO::CB 1693int
1183 1694nready()
1184void
1185cancel (aio_req_ornot req)
1186 PROTOTYPE: 1695 PROTOTYPE:
1187 CODE: 1696 CODE:
1188 req->cancelled = 1; 1697 RETVAL = get_nready ();
1698 OUTPUT:
1699 RETVAL
1189 1700
1701int
1702npending()
1703 PROTOTYPE:
1704 CODE:
1705 RETVAL = get_npending ();
1706 OUTPUT:
1707 RETVAL
1708
1709int
1710nthreads()
1711 PROTOTYPE:
1712 CODE:
1713 if (WORDACCESS_UNSAFE) LOCK (wrklock);
1714 RETVAL = started;
1715 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1716 OUTPUT:
1717 RETVAL
1718
1719PROTOTYPES: DISABLE
1720
1721MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1722
1723void
1724cancel (aio_req_ornot req)
1725 CODE:
1726 req_cancel (req);
1727
1728void
1729cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1730 CODE:
1731 SvREFCNT_dec (req->callback);
1732 req->callback = newSVsv (callback);
1733
1734MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1735
1736void
1737add (aio_req grp, ...)
1738 PPCODE:
1739{
1740 int i;
1741 aio_req req;
1742
1743 if (grp->int1 == 2)
1744 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1745
1746 for (i = 1; i < items; ++i )
1747 {
1748 if (GIMME_V != G_VOID)
1749 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1750
1751 req = SvAIO_REQ (ST (i));
1752
1753 if (req)
1754 {
1755 ++grp->size;
1756 req->grp = grp;
1757
1758 req->grp_prev = 0;
1759 req->grp_next = grp->grp_first;
1760
1761 if (grp->grp_first)
1762 grp->grp_first->grp_prev = req;
1763
1764 grp->grp_first = req;
1765 }
1766 }
1767}
1768
1769void
1770cancel_subs (aio_req_ornot req)
1771 CODE:
1772 req_cancel_subs (req);
1773
1774void
1775result (aio_req grp, ...)
1776 CODE:
1777{
1778 int i;
1779 AV *av;
1780
1781 grp->errorno = errno;
1782
1783 av = newAV ();
1784
1785 for (i = 1; i < items; ++i )
1786 av_push (av, newSVsv (ST (i)));
1787
1788 SvREFCNT_dec (grp->sv1);
1789 grp->sv1 = (SV *)av;
1790}
1791
1792void
1793errno (aio_req grp, int errorno = errno)
1794 CODE:
1795 grp->errorno = errorno;
1796
1797void
1798limit (aio_req grp, int limit)
1799 CODE:
1800 grp->int2 = limit;
1801 aio_grp_feed (grp);
1802
1803void
1804feed (aio_req grp, SV *callback=&PL_sv_undef)
1805 CODE:
1806{
1807 SvREFCNT_dec (grp->sv2);
1808 grp->sv2 = newSVsv (callback);
1809
1810 if (grp->int2 <= 0)
1811 grp->int2 = 2;
1812
1813 aio_grp_feed (grp);
1814}
1815

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