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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.39 by root, Mon Feb 6 23:54:12 2006 UTC vs.
Revision 1.79 by root, Thu Oct 26 16:28:33 2006 UTC

1/* solaris */
2#define _POSIX_PTHREAD_SEMANTICS 1
3
4#if __linux && !defined(_GNU_SOURCE)
5# define _GNU_SOURCE
6#endif
7
8/* just in case */
1#define _REENTRANT 1 9#define _REENTRANT 1
10
2#include <errno.h> 11#include <errno.h>
3 12
4#include "EXTERN.h" 13#include "EXTERN.h"
5#include "perl.h" 14#include "perl.h"
6#include "XSUB.h" 15#include "XSUB.h"
8#include "autoconf/config.h" 17#include "autoconf/config.h"
9 18
10#include <pthread.h> 19#include <pthread.h>
11 20
12#include <stddef.h> 21#include <stddef.h>
22#include <errno.h>
23#include <sys/time.h>
24#include <sys/select.h>
13#include <sys/types.h> 25#include <sys/types.h>
14#include <sys/stat.h> 26#include <sys/stat.h>
15#include <limits.h> 27#include <limits.h>
16#include <unistd.h> 28#include <unistd.h>
17#include <fcntl.h> 29#include <fcntl.h>
36/* used for struct dirent, AIX doesn't provide it */ 48/* used for struct dirent, AIX doesn't provide it */
37#ifndef NAME_MAX 49#ifndef NAME_MAX
38# define NAME_MAX 4096 50# define NAME_MAX 4096
39#endif 51#endif
40 52
53#ifndef PTHREAD_STACK_MIN
54/* care for broken platforms, e.g. windows */
55# define PTHREAD_STACK_MIN 16384
56#endif
57
41#if __ia64 58#if __ia64
42# define STACKSIZE 65536 59# define STACKSIZE 65536
60#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61# define STACKSIZE PTHREAD_STACK_MIN
43#else 62#else
44# define STACKSIZE 8192 63# define STACKSIZE 16384
45#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;
46 88
47enum { 89enum {
48 REQ_QUIT, 90 REQ_QUIT,
49 REQ_OPEN, REQ_CLOSE, 91 REQ_OPEN, REQ_CLOSE,
50 REQ_READ, REQ_WRITE, REQ_READAHEAD, 92 REQ_READ, REQ_WRITE, REQ_READAHEAD,
51 REQ_SENDFILE, 93 REQ_SENDFILE,
52 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 94 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
53 REQ_FSYNC, REQ_FDATASYNC, 95 REQ_FSYNC, REQ_FDATASYNC,
54 REQ_UNLINK, REQ_RMDIR, 96 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
55 REQ_READDIR, 97 REQ_READDIR,
56 REQ_SYMLINK, 98 REQ_LINK, REQ_SYMLINK,
99 REQ_GROUP, REQ_NOP,
100 REQ_BUSY,
57}; 101};
58 102
103#define AIO_REQ_KLASS "IO::AIO::REQ"
104#define AIO_GRP_KLASS "IO::AIO::GRP"
105
59typedef struct aio_cb { 106typedef struct aio_cb
107{
60 struct aio_cb *volatile next; 108 struct aio_cb *volatile next;
61 109
62 int type; 110 SV *data, *callback;
63 111 SV *fh, *fh2;
64 /* should receive a cleanup, with unions */ 112 void *dataptr, *data2ptr;
65 int fd, fd2; 113 Stat_t *statdata;
66 off_t offset; 114 off_t offset;
67 size_t length; 115 size_t length;
68 ssize_t result; 116 ssize_t result;
117
118 STRLEN dataoffset;
119 int type;
120 int fd, fd2;
121 int errorno;
69 mode_t mode; /* open */ 122 mode_t mode; /* open */
70 int errorno;
71 SV *data, *callback;
72 SV *fh, *fh2;
73 void *dataptr, *data2ptr;
74 STRLEN dataoffset;
75 123
76 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;
77} aio_cb; 129} aio_cb;
78 130
131enum {
132 FLAG_CANCELLED = 0x01,
133};
134
79typedef aio_cb *aio_req; 135typedef aio_cb *aio_req;
136typedef aio_cb *aio_req_ornot;
80 137
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
81static int started, wanted; 149static unsigned int started, wanted;
82static volatile int nreqs; 150static volatile unsigned int nreqs, nready, npending;
83static int max_outstanding = 1<<30; 151static volatile unsigned int max_outstanding = 0xffffffff;
84static int respipe [2]; 152static int respipe [2];
85 153
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
86static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 203static pthread_mutex_t reslock = AIO_MUTEX_INIT;
87static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 204static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
88static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 205static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
89 206
90static volatile aio_req reqs, reqe; /* queue start, queue end */ 207/*
91static 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;
92 216
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);
93static void free_req (aio_req req) 263static void req_free (aio_req req);
94{ 264static void req_cancel (aio_req req);
95 if (req->data)
96 SvREFCNT_dec (req->data);
97 265
266/* must be called at most once */
267static SV *req_sv (aio_req req, const char *klass)
268{
98 if (req->fh) 269 if (!req->self)
99 SvREFCNT_dec (req->fh); 270 {
271 req->self = (SV *)newHV ();
272 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
273 }
100 274
101 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 {
102 SvREFCNT_dec (req->fh2); 314 SvREFCNT_dec (grp->fh2);
103 315 grp->fh2 = 0;
104 if (req->statdata) 316 break;
105 Safefree (req->statdata); 317 }
106
107 if (req->callback)
108 SvREFCNT_dec (req->callback);
109
110 if (req->type == REQ_READDIR && req->result >= 0)
111 free (req->data2ptr);
112
113 Safefree (req);
114}
115
116static void
117poll_wait ()
118{
119 if (nreqs && !ress)
120 { 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{
121 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
122 FD_ZERO(&rfd); 350 FD_ZERO(&rfd);
123 FD_SET(respipe [0], &rfd); 351 FD_SET(respipe [0], &rfd);
124 352
125 select (respipe [0] + 1, &rfd, 0, 0, 0); 353 select (respipe [0] + 1, &rfd, 0, 0, 0);
126 } 354 }
127} 355}
128 356
129static int 357static void req_invoke (aio_req req)
130poll_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)
131{ 510{
132 dSP; 511 dSP;
133 int count = 0; 512 int count = 0;
134 int do_croak = 0; 513 int do_croak = 0;
135 aio_req req; 514 aio_req req;
136 515
137 for (;;) 516 for (;;)
138 { 517 {
139 pthread_mutex_lock (&reslock); 518 while (max <= 0 || count < max)
140 req = ress;
141
142 if (req)
143 { 519 {
144 ress = req->next; 520 LOCK (reslock);
521 req = reqq_shift (&res_queue);
145 522
146 if (!ress) 523 if (req)
147 { 524 {
525 --npending;
526
527 if (!res_queue.size)
528 {
148 /* read any signals sent by the worker threads */ 529 /* read any signals sent by the worker threads */
149 char buf [32]; 530 char buf [32];
150 while (read (respipe [0], buf, 32) == 32) 531 while (read (respipe [0], buf, 32) == 32)
532 ;
151 ; 533 }
152
153 rese = 0;
154 } 534 }
155 }
156 535
157 pthread_mutex_unlock (&reslock); 536 UNLOCK (reslock);
158 537
159 if (!req) 538 if (!req)
160 break; 539 break;
161 540
162 nreqs--; 541 --nreqs;
163 542
164 if (req->type == REQ_QUIT) 543 if (req->type == REQ_QUIT)
165 started--; 544 --started;
166 else 545 else if (req->type == REQ_GROUP && req->length)
167 {
168 int errorno = errno;
169 errno = req->errorno;
170
171 if (req->type == REQ_READ)
172 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
173
174 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
175 SvREADONLY_off (req->data);
176
177 if (req->statdata)
178 { 546 {
179 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 547 req->fd = 1; /* mark request as delayed */
180 PL_laststatval = req->result; 548 continue;
181 PL_statcache = *(req->statdata);
182 }
183
184 ENTER;
185 PUSHMARK (SP);
186
187 if (req->type == REQ_READDIR)
188 {
189 SV *rv = &PL_sv_undef;
190
191 if (req->result >= 0)
192 {
193 char *buf = req->data2ptr;
194 AV *av = newAV ();
195
196 while (req->result)
197 {
198 SV *sv = newSVpv (buf, 0);
199
200 av_push (av, sv);
201 buf += SvCUR (sv) + 1;
202 req->result--;
203 }
204
205 rv = sv_2mortal (newRV_noinc ((SV *)av));
206 }
207
208 XPUSHs (rv);
209 } 549 }
210 else 550 else
211 { 551 {
212 XPUSHs (sv_2mortal (newSViv (req->result)));
213
214 if (req->type == REQ_OPEN) 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)
215 { 559 {
216 /* convert fd to fh */ 560 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
217 SV *fh; 561 PL_laststatval = req->result;
218 562 PL_statcache = *(req->statdata);
219 PUTBACK;
220 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
221 SPAGAIN;
222
223 fh = SvREFCNT_inc (POPs);
224
225 PUSHMARK (SP);
226 XPUSHs (sv_2mortal (fh));
227 } 563 }
564
565 req_invoke (req);
566
567 count++;
228 } 568 }
229 569
230 if (SvOK (req->callback)) 570 req_free (req);
231 {
232 PUTBACK;
233 call_sv (req->callback, G_VOID | G_EVAL);
234 SPAGAIN;
235
236 if (SvTRUE (ERRSV))
237 {
238 free_req (req);
239 croak (0);
240 }
241 }
242
243 LEAVE;
244
245 errno = errorno;
246 count++;
247 } 571 }
248 572
249 free_req (req); 573 if (nreqs <= max_outstanding)
574 break;
575
576 poll_wait ();
577
578 max = 0;
250 } 579 }
251 580
252 return count; 581 return count;
253} 582}
254 583
255static void *aio_proc(void *arg); 584static void *aio_proc(void *arg);
256 585
257static void
258start_thread (void) 586static void start_thread (void)
259{ 587{
260 sigset_t fullsigset, oldsigset; 588 sigset_t fullsigset, oldsigset;
261 pthread_t tid;
262 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");
263 595
264 pthread_attr_init (&attr); 596 pthread_attr_init (&attr);
265 pthread_attr_setstacksize (&attr, STACKSIZE); 597 pthread_attr_setstacksize (&attr, STACKSIZE);
266 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); 598 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
267 599
268 sigfillset (&fullsigset); 600 sigfillset (&fullsigset);
601
602 LOCK (wrklock);
269 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); 603 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
270 604
271 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;
272 started++; 611 ++started;
612 }
613 else
614 free (wrk);
273 615
274 sigprocmask (SIG_SETMASK, &oldsigset, 0); 616 sigprocmask (SIG_SETMASK, &oldsigset, 0);
617 UNLOCK (wrklock);
275} 618}
276 619
277static void 620static void req_send (aio_req req)
278send_req (aio_req req)
279{ 621{
280 while (started < wanted && nreqs >= started) 622 while (started < wanted && nreqs >= started)
281 start_thread (); 623 start_thread ();
282 624
283 nreqs++; 625 ++nreqs;
284 626
285 pthread_mutex_lock (&reqlock); 627 LOCK (reqlock);
286 628 ++nready;
287 req->next = 0; 629 reqq_push (&req_queue, req);
288
289 if (reqe)
290 {
291 reqe->next = req;
292 reqe = req;
293 }
294 else
295 reqe = reqs = req;
296
297 pthread_cond_signal (&reqwait); 630 pthread_cond_signal (&reqwait);
298 pthread_mutex_unlock (&reqlock); 631 UNLOCK (reqlock);
299
300 if (nreqs > max_outstanding)
301 for (;;)
302 {
303 poll_cb ();
304
305 if (nreqs <= max_outstanding)
306 break;
307
308 poll_wait ();
309 }
310} 632}
311 633
312static void 634static void end_thread (void)
313end_thread (void)
314{ 635{
315 aio_req req; 636 aio_req req;
637
316 Newz (0, req, 1, aio_cb); 638 Newz (0, req, 1, aio_cb);
639
317 req->type = REQ_QUIT; 640 req->type = REQ_QUIT;
641 req->pri = PRI_MAX + PRI_BIAS;
318 642
319 send_req (req); 643 req_send (req);
320} 644}
321 645
322static void min_parallel (int nthreads) 646static void min_parallel (int nthreads)
323{ 647{
324 if (wanted < nthreads) 648 if (wanted < nthreads)
339 } 663 }
340 664
341 while (started > wanted) 665 while (started > wanted)
342 { 666 {
343 poll_wait (); 667 poll_wait ();
344 poll_cb (); 668 poll_cb (0);
345 } 669 }
346} 670}
347 671
348static void create_pipe () 672static void create_pipe ()
349{ 673{
369 * 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,
370 * but that's your problem, not mine. 694 * but that's your problem, not mine.
371 */ 695 */
372static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; 696static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
373 697
374static ssize_t 698static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
375pread (int fd, void *buf, size_t count, off_t offset)
376{ 699{
377 ssize_t res; 700 ssize_t res;
378 off_t ooffset; 701 off_t ooffset;
379 702
380 pthread_mutex_lock (&preadwritelock); 703 LOCK (preadwritelock);
381 ooffset = lseek (fd, 0, SEEK_CUR); 704 ooffset = lseek (fd, 0, SEEK_CUR);
382 lseek (fd, offset, SEEK_SET); 705 lseek (fd, offset, SEEK_SET);
383 res = read (fd, buf, count); 706 res = read (fd, buf, count);
384 lseek (fd, ooffset, SEEK_SET); 707 lseek (fd, ooffset, SEEK_SET);
385 pthread_mutex_unlock (&preadwritelock); 708 UNLOCK (preadwritelock);
386 709
387 return res; 710 return res;
388} 711}
389 712
390static ssize_t
391pwrite (int fd, void *buf, size_t count, off_t offset) 713static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
392{ 714{
393 ssize_t res; 715 ssize_t res;
394 off_t ooffset; 716 off_t ooffset;
395 717
396 pthread_mutex_lock (&preadwritelock); 718 LOCK (preadwritelock);
397 ooffset = lseek (fd, 0, SEEK_CUR); 719 ooffset = lseek (fd, 0, SEEK_CUR);
398 lseek (fd, offset, SEEK_SET); 720 lseek (fd, offset, SEEK_SET);
399 res = write (fd, buf, count); 721 res = write (fd, buf, count);
400 lseek (fd, offset, SEEK_SET); 722 lseek (fd, offset, SEEK_SET);
401 pthread_mutex_unlock (&preadwritelock); 723 UNLOCK (preadwritelock);
402 724
403 return res; 725 return res;
404} 726}
405#endif 727#endif
406 728
407#if !HAVE_FDATASYNC 729#if !HAVE_FDATASYNC
408# define fdatasync fsync 730# define fdatasync fsync
409#endif 731#endif
410 732
411#if !HAVE_READAHEAD 733#if !HAVE_READAHEAD
412# define readahead aio_readahead 734# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
413 735
414static ssize_t 736static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
415readahead (int fd, off_t offset, size_t count)
416{ 737{
417 char readahead_buf[4096]; 738 dBUF;
418 739
419 while (count > 0) 740 while (count > 0)
420 { 741 {
421 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 742 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
422 743
423 pread (fd, readahead_buf, len, offset); 744 pread (fd, aio_buf, len, offset);
424 offset += len; 745 offset += len;
425 count -= len; 746 count -= len;
426 } 747 }
427 748
428 errno = 0; 749 errno = 0;
429} 750}
751
430#endif 752#endif
431 753
432#if !HAVE_READDIR_R 754#if !HAVE_READDIR_R
433# define readdir_r aio_readdir_r 755# define readdir_r aio_readdir_r
434 756
435static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; 757static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
436 758
437static int
438readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) 759static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
439{ 760{
440 struct dirent *e; 761 struct dirent *e;
441 int errorno; 762 int errorno;
442 763
443 pthread_mutex_lock (&readdirlock); 764 LOCK (readdirlock);
444 765
445 e = readdir (dirp); 766 e = readdir (dirp);
446 errorno = errno; 767 errorno = errno;
447 768
448 if (e) 769 if (e)
451 strcpy (ent->d_name, e->d_name); 772 strcpy (ent->d_name, e->d_name);
452 } 773 }
453 else 774 else
454 *res = 0; 775 *res = 0;
455 776
456 pthread_mutex_unlock (&readdirlock); 777 UNLOCK (readdirlock);
457 778
458 errno = errorno; 779 errno = errorno;
459 return e ? 0 : -1; 780 return e ? 0 : -1;
460} 781}
461#endif 782#endif
462 783
463/* sendfile always needs emulation */ 784/* sendfile always needs emulation */
464static ssize_t
465sendfile_ (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)
466{ 786{
467 ssize_t res; 787 ssize_t res;
468 788
469 if (!count) 789 if (!count)
470 return 0; 790 return 0;
481 { 801 {
482 off_t sbytes; 802 off_t sbytes;
483 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 803 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
484 804
485 if (res < 0 && sbytes) 805 if (res < 0 && sbytes)
486 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 806 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
487 res = sbytes; 807 res = sbytes;
488 } 808 }
489 809
490# elif __hpux 810# elif __hpux
491 res = sendfile (ofd, ifd, offset, count, 0, 0); 811 res = sendfile (ofd, ifd, offset, count, 0, 0);
519#endif 839#endif
520 ) 840 )
521 ) 841 )
522 { 842 {
523 /* emulate sendfile. this is a major pain in the ass */ 843 /* emulate sendfile. this is a major pain in the ass */
524 char buf[4096]; 844 dBUF;
845
525 res = 0; 846 res = 0;
526 847
527 while (count) 848 while (count)
528 { 849 {
529 ssize_t cnt; 850 ssize_t cnt;
530 851
531 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); 852 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
532 853
533 if (cnt <= 0) 854 if (cnt <= 0)
534 { 855 {
535 if (cnt && !res) res = -1; 856 if (cnt && !res) res = -1;
536 break; 857 break;
537 } 858 }
538 859
539 cnt = write (ofd, buf, cnt); 860 cnt = write (ofd, aio_buf, cnt);
540 861
541 if (cnt <= 0) 862 if (cnt <= 0)
542 { 863 {
543 if (cnt && !res) res = -1; 864 if (cnt && !res) res = -1;
544 break; 865 break;
552 873
553 return res; 874 return res;
554} 875}
555 876
556/* read a full directory */ 877/* read a full directory */
557static int 878static void scandir_ (aio_req req, worker *self)
558scandir_ (const char *path, void **namesp)
559{ 879{
560 DIR *dirp = opendir (path); 880 DIR *dirp;
561 union 881 union
562 { 882 {
563 struct dirent d; 883 struct dirent d;
564 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; 884 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
565 } u; 885 } *u;
566 struct dirent *entp; 886 struct dirent *entp;
567 char *name, *names; 887 char *name, *names;
568 int memlen = 4096; 888 int memlen = 4096;
569 int memofs = 0; 889 int memofs = 0;
570 int res = 0; 890 int res = 0;
571 int errorno; 891 int errorno;
572 892
573 if (!dirp) 893 LOCK (wrklock);
574 return -1; 894 self->dirp = dirp = opendir (req->dataptr);
575 895 self->dbuf = u = malloc (sizeof (*u));
576 names = malloc (memlen); 896 req->data2ptr = names = malloc (memlen);
897 UNLOCK (wrklock);
577 898
899 if (dirp && u && names)
578 for (;;) 900 for (;;)
579 { 901 {
902 errno = 0;
580 errno = 0, readdir_r (dirp, &u.d, &entp); 903 readdir_r (dirp, &u->d, &entp);
581 904
582 if (!entp) 905 if (!entp)
583 break; 906 break;
584 907
585 name = entp->d_name; 908 name = entp->d_name;
586 909
587 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) 910 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
588 { 911 {
589 int len = strlen (name) + 1; 912 int len = strlen (name) + 1;
590 913
591 res++; 914 res++;
592 915
593 while (memofs + len > memlen) 916 while (memofs + len > memlen)
594 { 917 {
595 memlen *= 2; 918 memlen *= 2;
919 LOCK (wrklock);
596 names = realloc (names, memlen); 920 req->data2ptr = names = realloc (names, memlen);
921 UNLOCK (wrklock);
922
597 if (!names) 923 if (!names)
598 break; 924 break;
599 } 925 }
600 926
601 memcpy (names + memofs, name, len); 927 memcpy (names + memofs, name, len);
602 memofs += len; 928 memofs += len;
603 } 929 }
604 } 930 }
605 931
606 errorno = errno;
607 closedir (dirp);
608
609 if (errorno) 932 if (errno)
610 {
611 free (names);
612 errno = errorno;
613 res = -1; 933 res = -1;
614 } 934
615 935 req->result = res;
616 *namesp = (void *)names;
617 return res;
618} 936}
619 937
620/*****************************************************************************/ 938/*****************************************************************************/
621 939
622static void *
623aio_proc (void *thr_arg) 940static void *aio_proc (void *thr_arg)
624{ 941{
625 aio_req req; 942 aio_req req;
626 int type; 943 int type;
944 worker *self = (worker *)thr_arg;
627 945
628 do 946 do
629 { 947 {
630 pthread_mutex_lock (&reqlock); 948 LOCK (reqlock);
631 949
632 for (;;) 950 for (;;)
633 { 951 {
634 req = reqs; 952 self->req = req = reqq_shift (&req_queue);
635
636 if (reqs)
637 {
638 reqs = reqs->next;
639 if (!reqs) reqe = 0;
640 }
641 953
642 if (req) 954 if (req)
643 break; 955 break;
644 956
645 pthread_cond_wait (&reqwait, &reqlock); 957 pthread_cond_wait (&reqwait, &reqlock);
646 } 958 }
647 959
648 pthread_mutex_unlock (&reqlock); 960 --nready;
961
962 UNLOCK (reqlock);
649 963
650 errno = 0; /* strictly unnecessary */ 964 errno = 0; /* strictly unnecessary */
965 type = req->type; /* remember type for QUIT check */
651 966
652 type = req->type; 967 if (!(req->flags & FLAG_CANCELLED))
653
654 switch (type) 968 switch (type)
655 { 969 {
656 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;
657 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;
658 972
659 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;
660 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;
661 975
662 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 976 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
663 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 977 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
664 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 978 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
665 979
666 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;
667 case REQ_CLOSE: req->result = close (req->fd); break; 981 case REQ_CLOSE: req->result = close (req->fd); break;
668 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 982 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
669 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;
670 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 986 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
671 987
672 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 988 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
673 case REQ_FSYNC: req->result = fsync (req->fd); break; 989 case REQ_FSYNC: req->result = fsync (req->fd); break;
674 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; 990 case REQ_READDIR: scandir_ (req, self); break;
675 991
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:
676 case REQ_QUIT: 1004 case REQ_QUIT:
677 break; 1005 break;
678 1006
679 default: 1007 default:
680 req->result = ENOSYS; 1008 req->result = ENOSYS;
681 break; 1009 break;
682 } 1010 }
683 1011
684 req->errorno = errno; 1012 req->errorno = errno;
685 1013
686 pthread_mutex_lock (&reslock); 1014 LOCK (reslock);
687 1015
688 req->next = 0; 1016 ++npending;
689 1017
690 if (rese) 1018 if (!reqq_push (&res_queue, req))
691 {
692 rese->next = req;
693 rese = req;
694 }
695 else
696 {
697 rese = ress = req;
698
699 /* write a dummy byte to the pipe so fh becomes ready */ 1019 /* write a dummy byte to the pipe so fh becomes ready */
700 write (respipe [1], &respipe, 1); 1020 write (respipe [1], &respipe, 1);
701 }
702 1021
703 pthread_mutex_unlock (&reslock); 1022 self->req = 0;
1023 worker_clear (self);
1024
1025 UNLOCK (reslock);
704 } 1026 }
705 while (type != REQ_QUIT); 1027 while (type != REQ_QUIT);
706 1028
1029 LOCK (wrklock);
1030 worker_free (self);
1031 UNLOCK (wrklock);
1032
707 return 0; 1033 return 0;
708} 1034}
709 1035
710/*****************************************************************************/ 1036/*****************************************************************************/
711 1037
712static void atfork_prepare (void) 1038static void atfork_prepare (void)
713{ 1039{
714 pthread_mutex_lock (&reqlock); 1040 LOCK (wrklock);
715 pthread_mutex_lock (&reslock); 1041 LOCK (reqlock);
1042 LOCK (reslock);
716#if !HAVE_PREADWRITE 1043#if !HAVE_PREADWRITE
717 pthread_mutex_lock (&preadwritelock); 1044 LOCK (preadwritelock);
718#endif 1045#endif
719#if !HAVE_READDIR_R 1046#if !HAVE_READDIR_R
720 pthread_mutex_lock (&readdirlock); 1047 LOCK (readdirlock);
721#endif 1048#endif
722} 1049}
723 1050
724static void atfork_parent (void) 1051static void atfork_parent (void)
725{ 1052{
726#if !HAVE_READDIR_R 1053#if !HAVE_READDIR_R
727 pthread_mutex_unlock (&readdirlock); 1054 UNLOCK (readdirlock);
728#endif 1055#endif
729#if !HAVE_PREADWRITE 1056#if !HAVE_PREADWRITE
730 pthread_mutex_unlock (&preadwritelock); 1057 UNLOCK (preadwritelock);
731#endif 1058#endif
732 pthread_mutex_unlock (&reslock); 1059 UNLOCK (reslock);
733 pthread_mutex_unlock (&reqlock); 1060 UNLOCK (reqlock);
1061 UNLOCK (wrklock);
734} 1062}
735 1063
736static void atfork_child (void) 1064static void atfork_child (void)
737{ 1065{
738 aio_req prv; 1066 aio_req prv;
739 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
740 started = 0; 1085 started = 0;
741 1086 nreqs = 0;
742 while (reqs)
743 {
744 prv = reqs;
745 reqs = prv->next;
746 free_req (prv);
747 }
748
749 reqs = reqe = 0;
750
751 while (ress)
752 {
753 prv = ress;
754 ress = prv->next;
755 free_req (prv);
756 }
757
758 ress = rese = 0;
759 1087
760 close (respipe [0]); 1088 close (respipe [0]);
761 close (respipe [1]); 1089 close (respipe [1]);
762 create_pipe (); 1090 create_pipe ();
763 1091
764 atfork_parent (); 1092 atfork_parent ();
765} 1093}
766 1094
767#define dREQ \ 1095#define dREQ \
768 aio_req req; \ 1096 aio_req req; \
1097 int req_pri = next_pri; \
1098 next_pri = DEFAULT_PRI + PRI_BIAS; \
769 \ 1099 \
770 if (SvOK (callback) && !SvROK (callback)) \ 1100 if (SvOK (callback) && !SvROK (callback)) \
771 croak ("clalback must be undef or of reference type"); \ 1101 croak ("callback must be undef or of reference type"); \
772 \ 1102 \
773 Newz (0, req, 1, aio_cb); \ 1103 Newz (0, req, 1, aio_cb); \
774 if (!req) \ 1104 if (!req) \
775 croak ("out of memory during aio_req allocation"); \ 1105 croak ("out of memory during aio_req allocation"); \
776 \ 1106 \
777 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));
778 1115
779MODULE = IO::AIO PACKAGE = IO::AIO 1116MODULE = IO::AIO PACKAGE = IO::AIO
780 1117
781PROTOTYPES: ENABLE 1118PROTOTYPES: ENABLE
782 1119
783BOOT: 1120BOOT:
784{ 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
785 create_pipe (); 1127 create_pipe ();
786 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1128 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
787} 1129}
788 1130
789void 1131void
790min_parallel(nthreads) 1132min_parallel (int nthreads)
791 int nthreads
792 PROTOTYPE: $ 1133 PROTOTYPE: $
793 1134
794void 1135void
795max_parallel(nthreads) 1136max_parallel (int nthreads)
796 int nthreads
797 PROTOTYPE: $ 1137 PROTOTYPE: $
798 1138
799int 1139int
800max_outstanding(nreqs) 1140max_outstanding (int maxreqs)
801 int nreqs 1141 PROTOTYPE: $
802 PROTOTYPE: $
803 CODE: 1142 CODE:
804 RETVAL = max_outstanding; 1143 RETVAL = max_outstanding;
805 max_outstanding = nreqs; 1144 max_outstanding = maxreqs;
1145 OUTPUT:
1146 RETVAL
806 1147
807void 1148void
808aio_open(pathname,flags,mode,callback=&PL_sv_undef) 1149aio_open (pathname,flags,mode,callback=&PL_sv_undef)
809 SV * pathname 1150 SV * pathname
810 int flags 1151 int flags
811 int mode 1152 int mode
812 SV * callback 1153 SV * callback
813 PROTOTYPE: $$$;$ 1154 PROTOTYPE: $$$;$
814 CODE: 1155 PPCODE:
815{ 1156{
816 dREQ; 1157 dREQ;
817 1158
818 req->type = REQ_OPEN; 1159 req->type = REQ_OPEN;
819 req->data = newSVsv (pathname); 1160 req->data = newSVsv (pathname);
820 req->dataptr = SvPVbyte_nolen (req->data); 1161 req->dataptr = SvPVbyte_nolen (req->data);
821 req->fd = flags; 1162 req->fd = flags;
822 req->mode = mode; 1163 req->mode = mode;
823 1164
824 send_req (req); 1165 REQ_SEND;
825} 1166}
826 1167
827void 1168void
828aio_close(fh,callback=&PL_sv_undef) 1169aio_close (fh,callback=&PL_sv_undef)
829 SV * fh 1170 SV * fh
830 SV * callback 1171 SV * callback
831 PROTOTYPE: $;$ 1172 PROTOTYPE: $;$
832 ALIAS: 1173 ALIAS:
833 aio_close = REQ_CLOSE 1174 aio_close = REQ_CLOSE
834 aio_fsync = REQ_FSYNC 1175 aio_fsync = REQ_FSYNC
835 aio_fdatasync = REQ_FDATASYNC 1176 aio_fdatasync = REQ_FDATASYNC
836 CODE: 1177 PPCODE:
837{ 1178{
838 dREQ; 1179 dREQ;
839 1180
840 req->type = ix; 1181 req->type = ix;
841 req->fh = newSVsv (fh); 1182 req->fh = newSVsv (fh);
842 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1183 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
843 1184
844 send_req (req); 1185 REQ_SEND (req);
845} 1186}
846 1187
847void 1188void
848aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1189aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
849 SV * fh 1190 SV * fh
850 UV offset 1191 UV offset
851 UV length 1192 UV length
852 SV * data 1193 SV * data
853 UV dataoffset 1194 UV dataoffset
854 SV * callback 1195 SV * callback
855 ALIAS: 1196 ALIAS:
856 aio_read = REQ_READ 1197 aio_read = REQ_READ
857 aio_write = REQ_WRITE 1198 aio_write = REQ_WRITE
858 PROTOTYPE: $$$$$;$ 1199 PROTOTYPE: $$$$$;$
859 CODE: 1200 PPCODE:
860{ 1201{
861 aio_req req; 1202 aio_req req;
862 STRLEN svlen; 1203 STRLEN svlen;
863 char *svptr = SvPVbyte (data, svlen); 1204 char *svptr = SvPVbyte (data, svlen);
864 1205
902 { 1243 {
903 SvREADONLY_on (data); 1244 SvREADONLY_on (data);
904 req->data2ptr = (void *)data; 1245 req->data2ptr = (void *)data;
905 } 1246 }
906 1247
907 send_req (req); 1248 REQ_SEND;
908 } 1249 }
909} 1250}
910 1251
911void 1252void
912aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1253aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
913 SV * out_fh 1254 SV * out_fh
914 SV * in_fh 1255 SV * in_fh
915 UV in_offset 1256 UV in_offset
916 UV length 1257 UV length
917 SV * callback 1258 SV * callback
918 PROTOTYPE: $$$$;$ 1259 PROTOTYPE: $$$$;$
919 CODE: 1260 PPCODE:
920{ 1261{
921 dREQ; 1262 dREQ;
922 1263
923 req->type = REQ_SENDFILE; 1264 req->type = REQ_SENDFILE;
924 req->fh = newSVsv (out_fh); 1265 req->fh = newSVsv (out_fh);
926 req->fh2 = newSVsv (in_fh); 1267 req->fh2 = newSVsv (in_fh);
927 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1268 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
928 req->offset = in_offset; 1269 req->offset = in_offset;
929 req->length = length; 1270 req->length = length;
930 1271
931 send_req (req); 1272 REQ_SEND;
932} 1273}
933 1274
934void 1275void
935aio_readahead(fh,offset,length,callback=&PL_sv_undef) 1276aio_readahead (fh,offset,length,callback=&PL_sv_undef)
936 SV * fh 1277 SV * fh
937 UV offset 1278 UV offset
938 IV length 1279 IV length
939 SV * callback 1280 SV * callback
940 PROTOTYPE: $$$;$ 1281 PROTOTYPE: $$$;$
941 CODE: 1282 PPCODE:
942{ 1283{
943 dREQ; 1284 dREQ;
944 1285
945 req->type = REQ_READAHEAD; 1286 req->type = REQ_READAHEAD;
946 req->fh = newSVsv (fh); 1287 req->fh = newSVsv (fh);
947 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1288 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
948 req->offset = offset; 1289 req->offset = offset;
949 req->length = length; 1290 req->length = length;
950 1291
951 send_req (req); 1292 REQ_SEND;
952} 1293}
953 1294
954void 1295void
955aio_stat(fh_or_path,callback=&PL_sv_undef) 1296aio_stat (fh_or_path,callback=&PL_sv_undef)
956 SV * fh_or_path 1297 SV * fh_or_path
957 SV * callback 1298 SV * callback
958 ALIAS: 1299 ALIAS:
959 aio_stat = REQ_STAT 1300 aio_stat = REQ_STAT
960 aio_lstat = REQ_LSTAT 1301 aio_lstat = REQ_LSTAT
961 CODE: 1302 PPCODE:
962{ 1303{
963 dREQ; 1304 dREQ;
964 1305
965 New (0, req->statdata, 1, Stat_t); 1306 New (0, req->statdata, 1, Stat_t);
966 if (!req->statdata) 1307 if (!req->statdata)
967 { 1308 {
968 free_req (req); 1309 req_free (req);
969 croak ("out of memory during aio_req->statdata allocation"); 1310 croak ("out of memory during aio_req->statdata allocation");
970 } 1311 }
971 1312
972 if (SvPOK (fh_or_path)) 1313 if (SvPOK (fh_or_path))
973 { 1314 {
980 req->type = REQ_FSTAT; 1321 req->type = REQ_FSTAT;
981 req->fh = newSVsv (fh_or_path); 1322 req->fh = newSVsv (fh_or_path);
982 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1323 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
983 } 1324 }
984 1325
985 send_req (req); 1326 REQ_SEND;
986} 1327}
987 1328
988void 1329void
989aio_unlink(pathname,callback=&PL_sv_undef) 1330aio_unlink (pathname,callback=&PL_sv_undef)
990 SV * pathname 1331 SV * pathname
991 SV * callback 1332 SV * callback
992 ALIAS: 1333 ALIAS:
993 aio_unlink = REQ_UNLINK 1334 aio_unlink = REQ_UNLINK
994 aio_rmdir = REQ_RMDIR 1335 aio_rmdir = REQ_RMDIR
1336 aio_readdir = REQ_READDIR
995 CODE: 1337 PPCODE:
996{ 1338{
997 dREQ; 1339 dREQ;
998 1340
999 req->type = ix; 1341 req->type = ix;
1000 req->data = newSVsv (pathname); 1342 req->data = newSVsv (pathname);
1001 req->dataptr = SvPVbyte_nolen (req->data); 1343 req->dataptr = SvPVbyte_nolen (req->data);
1002 1344
1003 send_req (req); 1345 REQ_SEND;
1004} 1346}
1005 1347
1006void 1348void
1007aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1349aio_link (oldpath,newpath,callback=&PL_sv_undef)
1008 SV * oldpath 1350 SV * oldpath
1009 SV * newpath 1351 SV * newpath
1010 SV * callback 1352 SV * callback
1353 ALIAS:
1354 aio_link = REQ_LINK
1355 aio_symlink = REQ_SYMLINK
1356 aio_rename = REQ_RENAME
1011 CODE: 1357 PPCODE:
1012{ 1358{
1013 dREQ; 1359 dREQ;
1014 1360
1015 req->type = REQ_SYMLINK; 1361 req->type = ix;
1016 req->fh = newSVsv (oldpath); 1362 req->fh = newSVsv (oldpath);
1017 req->data2ptr = SvPVbyte_nolen (req->fh); 1363 req->data2ptr = SvPVbyte_nolen (req->fh);
1018 req->data = newSVsv (newpath); 1364 req->data = newSVsv (newpath);
1019 req->dataptr = SvPVbyte_nolen (req->data); 1365 req->dataptr = SvPVbyte_nolen (req->data);
1020 1366
1021 send_req (req); 1367 REQ_SEND;
1022} 1368}
1023 1369
1024void 1370void
1025aio_readdir(pathname,callback=&PL_sv_undef) 1371aio_busy (delay,callback=&PL_sv_undef)
1026 SV * pathname 1372 double delay
1027 SV * callback 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: ;$
1028 CODE: 1414 CODE:
1029{ 1415 RETVAL = next_pri - PRI_BIAS;
1030 dREQ; 1416 if (items > 0)
1031 1417 {
1032 req->type = REQ_READDIR; 1418 if (pri < PRI_MIN) pri = PRI_MIN;
1033 req->data = newSVsv (pathname); 1419 if (pri > PRI_MAX) pri = PRI_MAX;
1034 req->dataptr = SvPVbyte_nolen (req->data); 1420 next_pri = pri + PRI_BIAS;
1035 1421 }
1036 send_req (req); 1422 OUTPUT:
1037} 1423 RETVAL
1038 1424
1039void 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
1040flush() 1434flush ()
1041 PROTOTYPE: 1435 PROTOTYPE:
1042 CODE: 1436 CODE:
1043 while (nreqs) 1437 while (nreqs)
1044 { 1438 {
1045 poll_wait (); 1439 poll_wait ();
1046 poll_cb (); 1440 poll_cb (0);
1047 } 1441 }
1048 1442
1049void 1443void
1050poll() 1444poll()
1051 PROTOTYPE: 1445 PROTOTYPE:
1052 CODE: 1446 CODE:
1053 if (nreqs) 1447 if (nreqs)
1054 { 1448 {
1055 poll_wait (); 1449 poll_wait ();
1056 poll_cb (); 1450 poll_cb (0);
1057 } 1451 }
1058 1452
1059int 1453int
1060poll_fileno() 1454poll_fileno()
1061 PROTOTYPE: 1455 PROTOTYPE:
1066 1460
1067int 1461int
1068poll_cb(...) 1462poll_cb(...)
1069 PROTOTYPE: 1463 PROTOTYPE:
1070 CODE: 1464 CODE:
1071 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);
1072 OUTPUT: 1474 OUTPUT:
1073 RETVAL 1475 RETVAL
1074 1476
1075void 1477void
1076poll_wait() 1478poll_wait()
1085 CODE: 1487 CODE:
1086 RETVAL = nreqs; 1488 RETVAL = nreqs;
1087 OUTPUT: 1489 OUTPUT:
1088 RETVAL 1490 RETVAL
1089 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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