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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.61 by root, Mon Oct 23 22:44:21 2006 UTC vs.
Revision 1.100 by root, Fri Jun 1 06:00:40 2007 UTC

1#define _REENTRANT 1 1#include "xthread.h"
2
2#include <errno.h> 3#include <errno.h>
3 4
4#include "EXTERN.h" 5#include "EXTERN.h"
5#include "perl.h" 6#include "perl.h"
6#include "XSUB.h" 7#include "XSUB.h"
7 8
8#include "autoconf/config.h" 9#include "autoconf/config.h"
9 10
10#include <pthread.h>
11
12#include <stddef.h> 11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h> 13#include <errno.h>
14#include <sys/time.h> 14#include <sys/time.h>
15#include <sys/select.h> 15#include <sys/select.h>
16#include <sys/types.h> 16#include <sys/types.h>
17#include <sys/stat.h> 17#include <sys/stat.h>
18#include <limits.h> 18#include <limits.h>
19#include <unistd.h> 19#include <unistd.h>
20#include <fcntl.h> 20#include <fcntl.h>
21#include <signal.h> 21#include <signal.h>
22#include <sched.h> 22#include <sched.h>
23#include <utime.h>
23 24
24#if HAVE_SENDFILE 25#if HAVE_SENDFILE
25# if __linux 26# if __linux
26# include <sys/sendfile.h> 27# include <sys/sendfile.h>
27# elif __freebsd 28# elif __freebsd
34# else 35# else
35# error sendfile support requested but not available 36# error sendfile support requested but not available
36# endif 37# endif
37#endif 38#endif
38 39
40/* number of seconds after which idle threads exit */
41#define IDLE_TIMEOUT 10
42
39/* used for struct dirent, AIX doesn't provide it */ 43/* used for struct dirent, AIX doesn't provide it */
40#ifndef NAME_MAX 44#ifndef NAME_MAX
41# define NAME_MAX 4096 45# define NAME_MAX 4096
42#endif 46#endif
43 47
44#if __ia64 48/* buffer size for various temporary buffers */
45# define STACKSIZE 65536 49#define AIO_BUFSIZE 65536
46#else 50
47# define STACKSIZE 8192 51#define dBUF \
48#endif 52 char *aio_buf; \
53 LOCK (wrklock); \
54 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
55 UNLOCK (wrklock); \
56 if (!aio_buf) \
57 return -1;
58
59typedef SV SV8; /* byte-sv, used for argument-checking */
49 60
50enum { 61enum {
51 REQ_QUIT, 62 REQ_QUIT,
52 REQ_OPEN, REQ_CLOSE, 63 REQ_OPEN, REQ_CLOSE,
53 REQ_READ, REQ_WRITE, REQ_READAHEAD, 64 REQ_READ, REQ_WRITE, REQ_READAHEAD,
54 REQ_SENDFILE, 65 REQ_SENDFILE,
55 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 66 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
67 REQ_UTIME, REQ_FUTIME, /* must be consecutive */
68 REQ_CHMOD, REQ_FCHMOD, /* must be consecutive */
69 REQ_CHOWN, REQ_FCHOWN, /* must be consecutive */
56 REQ_FSYNC, REQ_FDATASYNC, 70 REQ_FSYNC, REQ_FDATASYNC,
57 REQ_UNLINK, REQ_RMDIR, REQ_RENAME, 71 REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
58 REQ_READDIR, 72 REQ_MKNOD, REQ_READDIR,
59 REQ_LINK, REQ_SYMLINK, 73 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
60 REQ_GROUP, REQ_NOP, 74 REQ_GROUP, REQ_NOP,
61 REQ_SLEEP, 75 REQ_BUSY,
62}; 76};
63 77
64#define AIO_REQ_KLASS "IO::AIO::REQ" 78#define AIO_REQ_KLASS "IO::AIO::REQ"
65#define AIO_GRP_KLASS "IO::AIO::GRP" 79#define AIO_GRP_KLASS "IO::AIO::GRP"
66 80
67typedef struct aio_cb 81typedef struct aio_cb
68{ 82{
69 struct aio_cb *volatile next; 83 struct aio_cb *volatile next;
70 84
71 SV *data, *callback; 85 SV *callback;
72 SV *fh, *fh2; 86 SV *sv1, *sv2;
73 void *dataptr, *data2ptr; 87 void *ptr1, *ptr2;
74 Stat_t *statdata;
75 off_t offset; 88 off_t offs;
76 size_t length; 89 size_t size;
77 ssize_t result; 90 ssize_t result;
91 double nv1, nv2;
78 92
79 STRLEN dataoffset; 93 STRLEN stroffset;
80 int type; 94 int type;
81 int fd, fd2; 95 int int1, int2, int3;
82 int errorno; 96 int errorno;
83 mode_t mode; /* open */ 97 mode_t mode; /* open */
84 98
85 unsigned char flags; 99 unsigned char flags;
86 unsigned char pri; 100 unsigned char pri;
88 SV *self; /* the perl counterpart of this request, if any */ 102 SV *self; /* the perl counterpart of this request, if any */
89 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 103 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
90} aio_cb; 104} aio_cb;
91 105
92enum { 106enum {
93 FLAG_CANCELLED = 0x01, 107 FLAG_CANCELLED = 0x01, /* request was cancelled */
108 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
109 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
94}; 110};
95 111
96typedef aio_cb *aio_req; 112typedef aio_cb *aio_req;
97typedef aio_cb *aio_req_ornot; 113typedef aio_cb *aio_req_ornot;
98 114
100 PRI_MIN = -4, 116 PRI_MIN = -4,
101 PRI_MAX = 4, 117 PRI_MAX = 4,
102 118
103 DEFAULT_PRI = 0, 119 DEFAULT_PRI = 0,
104 PRI_BIAS = -PRI_MIN, 120 PRI_BIAS = -PRI_MIN,
121 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
105}; 122};
106 123
124#define AIO_TICKS ((1000000 + 1023) >> 10)
125
126static unsigned int max_poll_time = 0;
127static unsigned int max_poll_reqs = 0;
128
129/* calculcate time difference in ~1/AIO_TICKS of a second */
130static int tvdiff (struct timeval *tv1, struct timeval *tv2)
131{
132 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
133 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
134}
135
136static thread_t main_tid;
137static int main_sig;
138static int block_sig_level;
139
140void block_sig ()
141{
142 sigset_t ss;
143
144 if (block_sig_level++)
145 return;
146
147 if (!main_sig)
148 return;
149
150 sigemptyset (&ss);
151 sigaddset (&ss, main_sig);
152 pthread_sigmask (SIG_BLOCK, &ss, 0);
153}
154
155void unblock_sig ()
156{
157 sigset_t ss;
158
159 if (--block_sig_level)
160 return;
161
162 if (!main_sig)
163 return;
164
165 sigemptyset (&ss);
166 sigaddset (&ss, main_sig);
167 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
168}
169
107static int next_pri = DEFAULT_PRI + PRI_BIAS; 170static int next_pri = DEFAULT_PRI + PRI_BIAS;
108 171
109static int started, wanted; 172static unsigned int started, idle, wanted;
110static volatile int nreqs; 173
111static int max_outstanding = 1<<30; 174/* worker threads management */
175static mutex_t wrklock = MUTEX_INIT;
176
177typedef struct worker {
178 /* locked by wrklock */
179 struct worker *prev, *next;
180
181 thread_t tid;
182
183 /* locked by reslock, reqlock or wrklock */
184 aio_req req; /* currently processed request */
185 void *dbuf;
186 DIR *dirp;
187} worker;
188
189static worker wrk_first = { &wrk_first, &wrk_first, 0 };
190
191static void worker_clear (worker *wrk)
192{
193 if (wrk->dirp)
194 {
195 closedir (wrk->dirp);
196 wrk->dirp = 0;
197 }
198
199 if (wrk->dbuf)
200 {
201 free (wrk->dbuf);
202 wrk->dbuf = 0;
203 }
204}
205
206static void worker_free (worker *wrk)
207{
208 wrk->next->prev = wrk->prev;
209 wrk->prev->next = wrk->next;
210
211 free (wrk);
212}
213
214static volatile unsigned int nreqs, nready, npending;
215static volatile unsigned int max_idle = 4;
216static volatile unsigned int max_outstanding = 0xffffffff;
112static int respipe [2]; 217static int respipe [2];
113 218
114static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 219static mutex_t reslock = MUTEX_INIT;
115static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 220static mutex_t reqlock = MUTEX_INIT;
116static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 221static cond_t reqwait = COND_INIT;
117 222
118static volatile aio_req reqs, reqe; /* queue start, queue end */ 223#if WORDACCESS_UNSAFE
119static volatile aio_req ress, rese; /* queue start, queue end */
120 224
225static unsigned int get_nready ()
226{
227 unsigned int retval;
228
229 LOCK (reqlock);
230 retval = nready;
231 UNLOCK (reqlock);
232
233 return retval;
234}
235
236static unsigned int get_npending ()
237{
238 unsigned int retval;
239
240 LOCK (reslock);
241 retval = npending;
242 UNLOCK (reslock);
243
244 return retval;
245}
246
247static unsigned int get_nthreads ()
248{
249 unsigned int retval;
250
251 LOCK (wrklock);
252 retval = started;
253 UNLOCK (wrklock);
254
255 return retval;
256}
257
258#else
259
260# define get_nready() nready
261# define get_npending() npending
262# define get_nthreads() started
263
264#endif
265
266/*
267 * a somewhat faster data structure might be nice, but
268 * with 8 priorities this actually needs <20 insns
269 * per shift, the most expensive operation.
270 */
271typedef struct {
272 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
273 int size;
274} reqq;
275
276static reqq req_queue;
277static reqq res_queue;
278
279int reqq_push (reqq *q, aio_req req)
280{
281 int pri = req->pri;
282 req->next = 0;
283
284 if (q->qe[pri])
285 {
286 q->qe[pri]->next = req;
287 q->qe[pri] = req;
288 }
289 else
290 q->qe[pri] = q->qs[pri] = req;
291
292 return q->size++;
293}
294
295aio_req reqq_shift (reqq *q)
296{
297 int pri;
298
299 if (!q->size)
300 return 0;
301
302 --q->size;
303
304 for (pri = NUM_PRI; pri--; )
305 {
306 aio_req req = q->qs[pri];
307
308 if (req)
309 {
310 if (!(q->qs[pri] = req->next))
311 q->qe[pri] = 0;
312
313 return req;
314 }
315 }
316
317 abort ();
318}
319
320static int poll_cb ();
121static void req_invoke (aio_req req); 321static int req_invoke (aio_req req);
122static void req_free (aio_req req); 322static void req_free (aio_req req);
323static void req_cancel (aio_req req);
123 324
124/* must be called at most once */ 325/* must be called at most once */
125static SV *req_sv (aio_req req, const char *klass) 326static SV *req_sv (aio_req req, const char *klass)
126{ 327{
127 if (!req->self) 328 if (!req->self)
145 return mg ? (aio_req)mg->mg_ptr : 0; 346 return mg ? (aio_req)mg->mg_ptr : 0;
146} 347}
147 348
148static void aio_grp_feed (aio_req grp) 349static void aio_grp_feed (aio_req grp)
149{ 350{
351 block_sig ();
352
150 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 353 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
151 { 354 {
152 int old_len = grp->length; 355 int old_len = grp->size;
153 356
154 if (grp->fh2 && SvOK (grp->fh2)) 357 if (grp->sv2 && SvOK (grp->sv2))
155 { 358 {
156 dSP; 359 dSP;
157 360
158 ENTER; 361 ENTER;
159 SAVETMPS; 362 SAVETMPS;
160 PUSHMARK (SP); 363 PUSHMARK (SP);
161 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 364 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
162 PUTBACK; 365 PUTBACK;
163 call_sv (grp->fh2, G_VOID | G_EVAL); 366 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
164 SPAGAIN; 367 SPAGAIN;
165 FREETMPS; 368 FREETMPS;
166 LEAVE; 369 LEAVE;
167 } 370 }
168 371
169 /* stop if no progress has been made */ 372 /* stop if no progress has been made */
170 if (old_len == grp->length) 373 if (old_len == grp->size)
171 { 374 {
172 SvREFCNT_dec (grp->fh2); 375 SvREFCNT_dec (grp->sv2);
173 grp->fh2 = 0; 376 grp->sv2 = 0;
174 break; 377 break;
175 } 378 }
176 } 379 }
380
381 unblock_sig ();
177} 382}
178 383
179static void aio_grp_dec (aio_req grp) 384static void aio_grp_dec (aio_req grp)
180{ 385{
181 --grp->length; 386 --grp->size;
182 387
183 /* call feeder, if applicable */ 388 /* call feeder, if applicable */
184 aio_grp_feed (grp); 389 aio_grp_feed (grp);
185 390
186 /* finish, if done */ 391 /* finish, if done */
187 if (!grp->length && grp->fd) 392 if (!grp->size && grp->int1)
188 { 393 {
394 block_sig ();
395
189 req_invoke (grp); 396 if (!req_invoke (grp))
397 {
398 req_free (grp);
399 unblock_sig ();
400 croak (0);
401 }
402
190 req_free (grp); 403 req_free (grp);
404 unblock_sig ();
191 } 405 }
192} 406}
193 407
194static void poll_wait () 408static int req_invoke (aio_req req)
195{ 409{
196 while (nreqs) 410 dSP;
411
412 if (req->flags & FLAG_SV2_RO_OFF)
413 SvREADONLY_off (req->sv2);
414
415 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
197 { 416 {
198 aio_req req; 417 ENTER;
199 pthread_mutex_lock (&reslock); 418 SAVETMPS;
200 req = ress; 419 PUSHMARK (SP);
201 pthread_mutex_unlock (&reslock); 420 EXTEND (SP, 1);
202 421
203 if (req) 422 switch (req->type)
204 return; 423 {
424 case REQ_READDIR:
425 {
426 SV *rv = &PL_sv_undef;
205 427
206 fd_set rfd; 428 if (req->result >= 0)
207 FD_ZERO(&rfd); 429 {
208 FD_SET(respipe [0], &rfd); 430 int i;
431 char *buf = req->ptr2;
432 AV *av = newAV ();
209 433
210 select (respipe [0] + 1, &rfd, 0, 0, 0); 434 av_extend (av, req->result - 1);
435
436 for (i = 0; i < req->result; ++i)
437 {
438 SV *sv = newSVpv (buf, 0);
439
440 av_store (av, i, sv);
441 buf += SvCUR (sv) + 1;
442 }
443
444 rv = sv_2mortal (newRV_noinc ((SV *)av));
445 }
446
447 PUSHs (rv);
448 }
449 break;
450
451 case REQ_OPEN:
452 {
453 /* convert fd to fh */
454 SV *fh;
455
456 PUSHs (sv_2mortal (newSViv (req->result)));
457 PUTBACK;
458 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
459 SPAGAIN;
460
461 fh = POPs;
462 PUSHMARK (SP);
463 XPUSHs (fh);
464 }
465 break;
466
467 case REQ_GROUP:
468 req->int1 = 2; /* mark group as finished */
469
470 if (req->sv1)
471 {
472 int i;
473 AV *av = (AV *)req->sv1;
474
475 EXTEND (SP, AvFILL (av) + 1);
476 for (i = 0; i <= AvFILL (av); ++i)
477 PUSHs (*av_fetch (av, i, 0));
478 }
479 break;
480
481 case REQ_NOP:
482 case REQ_BUSY:
483 break;
484
485 case REQ_READLINK:
486 if (req->result > 0)
487 {
488 SvCUR_set (req->sv2, req->result);
489 *SvEND (req->sv2) = 0;
490 PUSHs (req->sv2);
491 }
492 break;
493
494 case REQ_STAT:
495 case REQ_LSTAT:
496 case REQ_FSTAT:
497 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
498 PL_laststatval = req->result;
499 PL_statcache = *(Stat_t *)(req->ptr2);
500 PUSHs (sv_2mortal (newSViv (req->result)));
501 break;
502
503 case REQ_READ:
504 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
505 *SvEND (req->sv2) = 0;
506 PUSHs (sv_2mortal (newSViv (req->result)));
507 break;
508
509 default:
510 PUSHs (sv_2mortal (newSViv (req->result)));
511 break;
512 }
513
514 errno = req->errorno;
515
516 PUTBACK;
517 call_sv (req->callback, G_VOID | G_EVAL);
518 SPAGAIN;
519
520 FREETMPS;
521 LEAVE;
211 } 522 }
212}
213 523
214static void req_invoke (aio_req req)
215{
216 dSP;
217 int errorno = errno;
218
219 if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
220 return;
221
222 errno = req->errorno;
223
224 ENTER;
225 SAVETMPS;
226 PUSHMARK (SP);
227 EXTEND (SP, 1);
228
229 switch (req->type)
230 {
231 case REQ_READDIR:
232 {
233 SV *rv = &PL_sv_undef;
234
235 if (req->result >= 0)
236 {
237 char *buf = req->data2ptr;
238 AV *av = newAV ();
239
240 while (req->result)
241 {
242 SV *sv = newSVpv (buf, 0);
243
244 av_push (av, sv);
245 buf += SvCUR (sv) + 1;
246 req->result--;
247 }
248
249 rv = sv_2mortal (newRV_noinc ((SV *)av));
250 }
251
252 PUSHs (rv);
253 }
254 break;
255
256 case REQ_OPEN:
257 {
258 /* convert fd to fh */
259 SV *fh;
260
261 PUSHs (sv_2mortal (newSViv (req->result)));
262 PUTBACK;
263 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
264 SPAGAIN;
265
266 fh = SvREFCNT_inc (POPs);
267
268 PUSHMARK (SP);
269 XPUSHs (sv_2mortal (fh));
270 }
271 break;
272
273 case REQ_GROUP:
274 req->fd = 2; /* mark group as finished */
275
276 if (req->data)
277 {
278 int i;
279 AV *av = (AV *)req->data;
280
281 EXTEND (SP, AvFILL (av) + 1);
282 for (i = 0; i <= AvFILL (av); ++i)
283 PUSHs (*av_fetch (av, i, 0));
284 }
285 break;
286
287 case REQ_NOP:
288 case REQ_SLEEP:
289 break;
290
291 default:
292 PUSHs (sv_2mortal (newSViv (req->result)));
293 break;
294 }
295
296
297 PUTBACK;
298 call_sv (req->callback, G_VOID | G_EVAL);
299 SPAGAIN;
300
301 FREETMPS;
302 LEAVE;
303
304 errno = errorno;
305
306 if (SvTRUE (ERRSV))
307 {
308 req_free (req);
309 croak (0);
310 }
311}
312
313static void req_free (aio_req req)
314{
315 if (req->grp) 524 if (req->grp)
316 { 525 {
317 aio_req grp = req->grp; 526 aio_req grp = req->grp;
318 527
319 /* unlink request */ 528 /* unlink request */
324 grp->grp_first = req->grp_next; 533 grp->grp_first = req->grp_next;
325 534
326 aio_grp_dec (grp); 535 aio_grp_dec (grp);
327 } 536 }
328 537
538 return !SvTRUE (ERRSV);
539}
540
541static void req_free (aio_req req)
542{
329 if (req->self) 543 if (req->self)
330 { 544 {
331 sv_unmagic (req->self, PERL_MAGIC_ext); 545 sv_unmagic (req->self, PERL_MAGIC_ext);
332 SvREFCNT_dec (req->self); 546 SvREFCNT_dec (req->self);
333 } 547 }
334 548
335 SvREFCNT_dec (req->data);
336 SvREFCNT_dec (req->fh); 549 SvREFCNT_dec (req->sv1);
337 SvREFCNT_dec (req->fh2); 550 SvREFCNT_dec (req->sv2);
338 SvREFCNT_dec (req->callback); 551 SvREFCNT_dec (req->callback);
339 Safefree (req->statdata);
340 552
341 if (req->type == REQ_READDIR && req->result >= 0) 553 if (req->flags & FLAG_PTR2_FREE)
342 free (req->data2ptr); 554 free (req->ptr2);
343 555
344 Safefree (req); 556 Safefree (req);
345} 557}
346 558
559static void req_cancel_subs (aio_req grp)
560{
561 aio_req sub;
562
563 if (grp->type != REQ_GROUP)
564 return;
565
566 SvREFCNT_dec (grp->sv2);
567 grp->sv2 = 0;
568
569 for (sub = grp->grp_first; sub; sub = sub->grp_next)
570 req_cancel (sub);
571}
572
347static void req_cancel (aio_req req) 573static void req_cancel (aio_req req)
348{ 574{
349 req->flags |= FLAG_CANCELLED; 575 req->flags |= FLAG_CANCELLED;
350 576
351 if (req->type == REQ_GROUP) 577 req_cancel_subs (req);
578}
579
580static void *aio_proc(void *arg);
581
582static void start_thread (void)
583{
584 worker *wrk = calloc (1, sizeof (worker));
585
586 if (!wrk)
587 croak ("unable to allocate worker thread data");
588
589 LOCK (wrklock);
590
591 if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
352 { 592 {
353 aio_req sub; 593 wrk->prev = &wrk_first;
594 wrk->next = wrk_first.next;
595 wrk_first.next->prev = wrk;
596 wrk_first.next = wrk;
597 ++started;
598 }
599 else
600 free (wrk);
354 601
355 for (sub = req->grp_first; sub; sub = sub->grp_next) 602 UNLOCK (wrklock);
356 req_cancel (sub); 603}
604
605static void maybe_start_thread ()
606{
607 if (get_nthreads () >= wanted)
608 return;
609
610 /* todo: maybe use idle here, but might be less exact */
611 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
612 return;
613
614 start_thread ();
615}
616
617static void req_send (aio_req req)
618{
619 block_sig ();
620
621 ++nreqs;
622
623 LOCK (reqlock);
624 ++nready;
625 reqq_push (&req_queue, req);
626 COND_SIGNAL (reqwait);
627 UNLOCK (reqlock);
628
629 unblock_sig ();
630
631 maybe_start_thread ();
632}
633
634static void end_thread (void)
635{
636 aio_req req;
637
638 Newz (0, req, 1, aio_cb);
639
640 req->type = REQ_QUIT;
641 req->pri = PRI_MAX + PRI_BIAS;
642
643 LOCK (reqlock);
644 reqq_push (&req_queue, req);
645 COND_SIGNAL (reqwait);
646 UNLOCK (reqlock);
647
648 LOCK (wrklock);
649 --started;
650 UNLOCK (wrklock);
651}
652
653static void set_max_idle (int nthreads)
654{
655 if (WORDACCESS_UNSAFE) LOCK (reqlock);
656 max_idle = nthreads <= 0 ? 1 : nthreads;
657 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
658}
659
660static void min_parallel (int nthreads)
661{
662 if (wanted < nthreads)
663 wanted = nthreads;
664}
665
666static void max_parallel (int nthreads)
667{
668 if (wanted > nthreads)
669 wanted = nthreads;
670
671 while (started > wanted)
672 end_thread ();
673}
674
675static void poll_wait ()
676{
677 fd_set rfd;
678
679 while (nreqs)
680 {
681 int size;
682 if (WORDACCESS_UNSAFE) LOCK (reslock);
683 size = res_queue.size;
684 if (WORDACCESS_UNSAFE) UNLOCK (reslock);
685
686 if (size)
687 return;
688
689 maybe_start_thread ();
690
691 FD_ZERO(&rfd);
692 FD_SET(respipe [0], &rfd);
693
694 select (respipe [0] + 1, &rfd, 0, 0, 0);
357 } 695 }
358} 696}
359 697
360static int poll_cb () 698static int poll_cb ()
361{ 699{
362 dSP; 700 dSP;
363 int count = 0; 701 int count = 0;
702 int maxreqs = max_poll_reqs;
364 int do_croak = 0; 703 int do_croak = 0;
704 struct timeval tv_start, tv_now;
365 aio_req req; 705 aio_req req;
706
707 if (max_poll_time)
708 gettimeofday (&tv_start, 0);
709
710 block_sig ();
366 711
367 for (;;) 712 for (;;)
368 { 713 {
369 pthread_mutex_lock (&reslock); 714 for (;;)
370 req = ress;
371
372 if (req)
373 { 715 {
374 ress = req->next; 716 maybe_start_thread ();
375 717
718 LOCK (reslock);
719 req = reqq_shift (&res_queue);
720
376 if (!ress) 721 if (req)
377 { 722 {
723 --npending;
724
725 if (!res_queue.size)
726 {
378 /* read any signals sent by the worker threads */ 727 /* read any signals sent by the worker threads */
379 char buf [32]; 728 char buf [4];
380 while (read (respipe [0], buf, 32) == 32) 729 while (read (respipe [0], buf, 4) == 4)
730 ;
381 ; 731 }
732 }
382 733
734 UNLOCK (reslock);
735
736 if (!req)
737 break;
738
739 --nreqs;
740
741 if (req->type == REQ_GROUP && req->size)
742 {
743 req->int1 = 1; /* mark request as delayed */
744 continue;
745 }
746 else
747 {
748 if (!req_invoke (req))
749 {
750 req_free (req);
751 unblock_sig ();
752 croak (0);
753 }
754
755 count++;
756 }
757
758 req_free (req);
759
760 if (maxreqs && !--maxreqs)
761 break;
762
763 if (max_poll_time)
764 {
765 gettimeofday (&tv_now, 0);
766
767 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
383 rese = 0; 768 break;
384 } 769 }
385 } 770 }
386 771
387 pthread_mutex_unlock (&reslock); 772 if (nreqs <= max_outstanding)
388
389 if (!req)
390 break; 773 break;
391 774
392 --nreqs; 775 poll_wait ();
393 776
394 if (req->type == REQ_QUIT) 777 ++maxreqs;
395 started--;
396 else if (req->type == REQ_GROUP && req->length)
397 {
398 req->fd = 1; /* mark request as delayed */
399 continue;
400 }
401 else
402 {
403 if (req->type == REQ_READ)
404 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
405
406 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
407 SvREADONLY_off (req->data);
408
409 if (req->statdata)
410 {
411 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
412 PL_laststatval = req->result;
413 PL_statcache = *(req->statdata);
414 }
415
416 req_invoke (req);
417
418 count++;
419 }
420
421 req_free (req);
422 } 778 }
423 779
780 unblock_sig ();
424 return count; 781 return count;
425}
426
427static void *aio_proc(void *arg);
428
429static void start_thread (void)
430{
431 sigset_t fullsigset, oldsigset;
432 pthread_t tid;
433 pthread_attr_t attr;
434
435 pthread_attr_init (&attr);
436 pthread_attr_setstacksize (&attr, STACKSIZE);
437 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
438
439 sigfillset (&fullsigset);
440 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
441
442 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
443 started++;
444
445 sigprocmask (SIG_SETMASK, &oldsigset, 0);
446}
447
448static void req_send (aio_req req)
449{
450 while (started < wanted && nreqs >= started)
451 start_thread ();
452
453 ++nreqs;
454
455 pthread_mutex_lock (&reqlock);
456
457 req->next = 0;
458
459 if (reqe)
460 {
461 reqe->next = req;
462 reqe = req;
463 }
464 else
465 reqe = reqs = req;
466
467 pthread_cond_signal (&reqwait);
468 pthread_mutex_unlock (&reqlock);
469
470 if (nreqs > max_outstanding)
471 for (;;)
472 {
473 poll_cb ();
474
475 if (nreqs <= max_outstanding)
476 break;
477
478 poll_wait ();
479 }
480}
481
482static void end_thread (void)
483{
484 aio_req req;
485 Newz (0, req, 1, aio_cb);
486 req->type = REQ_QUIT;
487
488 req_send (req);
489}
490
491static void min_parallel (int nthreads)
492{
493 if (wanted < nthreads)
494 wanted = nthreads;
495}
496
497static void max_parallel (int nthreads)
498{
499 int cur = started;
500
501 if (wanted > nthreads)
502 wanted = nthreads;
503
504 while (cur > wanted)
505 {
506 end_thread ();
507 cur--;
508 }
509
510 while (started > wanted)
511 {
512 poll_wait ();
513 poll_cb ();
514 }
515} 782}
516 783
517static void create_pipe () 784static void create_pipe ()
518{ 785{
519 if (pipe (respipe)) 786 if (pipe (respipe))
536/* 803/*
537 * make our pread/pwrite safe against themselves, but not against 804 * make our pread/pwrite safe against themselves, but not against
538 * normal read/write by using a mutex. slows down execution a lot, 805 * normal read/write by using a mutex. slows down execution a lot,
539 * but that's your problem, not mine. 806 * but that's your problem, not mine.
540 */ 807 */
541static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; 808static mutex_t preadwritelock = MUTEX_INIT;
542 809
543static ssize_t pread (int fd, void *buf, size_t count, off_t offset) 810static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
544{ 811{
545 ssize_t res; 812 ssize_t res;
546 off_t ooffset; 813 off_t ooffset;
547 814
548 pthread_mutex_lock (&preadwritelock); 815 LOCK (preadwritelock);
549 ooffset = lseek (fd, 0, SEEK_CUR); 816 ooffset = lseek (fd, 0, SEEK_CUR);
550 lseek (fd, offset, SEEK_SET); 817 lseek (fd, offset, SEEK_SET);
551 res = read (fd, buf, count); 818 res = read (fd, buf, count);
552 lseek (fd, ooffset, SEEK_SET); 819 lseek (fd, ooffset, SEEK_SET);
553 pthread_mutex_unlock (&preadwritelock); 820 UNLOCK (preadwritelock);
554 821
555 return res; 822 return res;
556} 823}
557 824
558static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 825static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
559{ 826{
560 ssize_t res; 827 ssize_t res;
561 off_t ooffset; 828 off_t ooffset;
562 829
563 pthread_mutex_lock (&preadwritelock); 830 LOCK (preadwritelock);
564 ooffset = lseek (fd, 0, SEEK_CUR); 831 ooffset = lseek (fd, 0, SEEK_CUR);
565 lseek (fd, offset, SEEK_SET); 832 lseek (fd, offset, SEEK_SET);
566 res = write (fd, buf, count); 833 res = write (fd, buf, count);
567 lseek (fd, offset, SEEK_SET); 834 lseek (fd, offset, SEEK_SET);
568 pthread_mutex_unlock (&preadwritelock); 835 UNLOCK (preadwritelock);
569 836
570 return res; 837 return res;
571} 838}
839#endif
840
841#ifndef HAVE_FUTIMES
842
843# define utimes(path,times) aio_utimes (path, times)
844# define futimes(fd,times) aio_futimes (fd, times)
845
846int aio_utimes (const char *filename, const struct timeval times[2])
847{
848 if (times)
849 {
850 struct utimbuf buf;
851
852 buf.actime = times[0].tv_sec;
853 buf.modtime = times[1].tv_sec;
854
855 return utime (filename, &buf);
856 }
857 else
858 return utime (filename, 0);
859}
860
861int aio_futimes (int fd, const struct timeval tv[2])
862{
863 errno = ENOSYS;
864 return -1;
865}
866
572#endif 867#endif
573 868
574#if !HAVE_FDATASYNC 869#if !HAVE_FDATASYNC
575# define fdatasync fsync 870# define fdatasync fsync
576#endif 871#endif
577 872
578#if !HAVE_READAHEAD 873#if !HAVE_READAHEAD
579# define readahead aio_readahead 874# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
580 875
581static ssize_t readahead (int fd, off_t offset, size_t count) 876static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
582{ 877{
583 char readahead_buf[4096]; 878 dBUF;
584 879
585 while (count > 0) 880 while (count > 0)
586 { 881 {
587 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 882 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
588 883
589 pread (fd, readahead_buf, len, offset); 884 pread (fd, aio_buf, len, offset);
590 offset += len; 885 offset += len;
591 count -= len; 886 count -= len;
592 } 887 }
593 888
594 errno = 0; 889 errno = 0;
595} 890}
891
596#endif 892#endif
597 893
598#if !HAVE_READDIR_R 894#if !HAVE_READDIR_R
599# define readdir_r aio_readdir_r 895# define readdir_r aio_readdir_r
600 896
601static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; 897static mutex_t readdirlock = MUTEX_INIT;
602 898
603static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) 899static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
604{ 900{
605 struct dirent *e; 901 struct dirent *e;
606 int errorno; 902 int errorno;
607 903
608 pthread_mutex_lock (&readdirlock); 904 LOCK (readdirlock);
609 905
610 e = readdir (dirp); 906 e = readdir (dirp);
611 errorno = errno; 907 errorno = errno;
612 908
613 if (e) 909 if (e)
616 strcpy (ent->d_name, e->d_name); 912 strcpy (ent->d_name, e->d_name);
617 } 913 }
618 else 914 else
619 *res = 0; 915 *res = 0;
620 916
621 pthread_mutex_unlock (&readdirlock); 917 UNLOCK (readdirlock);
622 918
623 errno = errorno; 919 errno = errorno;
624 return e ? 0 : -1; 920 return e ? 0 : -1;
625} 921}
626#endif 922#endif
627 923
628/* sendfile always needs emulation */ 924/* sendfile always needs emulation */
629static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) 925static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
630{ 926{
631 ssize_t res; 927 ssize_t res;
632 928
633 if (!count) 929 if (!count)
634 return 0; 930 return 0;
645 { 941 {
646 off_t sbytes; 942 off_t sbytes;
647 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 943 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
648 944
649 if (res < 0 && sbytes) 945 if (res < 0 && sbytes)
650 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 946 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
651 res = sbytes; 947 res = sbytes;
652 } 948 }
653 949
654# elif __hpux 950# elif __hpux
655 res = sendfile (ofd, ifd, offset, count, 0, 0); 951 res = sendfile (ofd, ifd, offset, count, 0, 0);
683#endif 979#endif
684 ) 980 )
685 ) 981 )
686 { 982 {
687 /* emulate sendfile. this is a major pain in the ass */ 983 /* emulate sendfile. this is a major pain in the ass */
688 char buf[4096]; 984 dBUF;
985
689 res = 0; 986 res = 0;
690 987
691 while (count) 988 while (count)
692 { 989 {
693 ssize_t cnt; 990 ssize_t cnt;
694 991
695 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); 992 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
696 993
697 if (cnt <= 0) 994 if (cnt <= 0)
698 { 995 {
699 if (cnt && !res) res = -1; 996 if (cnt && !res) res = -1;
700 break; 997 break;
701 } 998 }
702 999
703 cnt = write (ofd, buf, cnt); 1000 cnt = write (ofd, aio_buf, cnt);
704 1001
705 if (cnt <= 0) 1002 if (cnt <= 0)
706 { 1003 {
707 if (cnt && !res) res = -1; 1004 if (cnt && !res) res = -1;
708 break; 1005 break;
716 1013
717 return res; 1014 return res;
718} 1015}
719 1016
720/* read a full directory */ 1017/* read a full directory */
721static int scandir_ (const char *path, void **namesp) 1018static void scandir_ (aio_req req, worker *self)
722{ 1019{
723 DIR *dirp = opendir (path); 1020 DIR *dirp;
724 union 1021 union
725 { 1022 {
726 struct dirent d; 1023 struct dirent d;
727 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; 1024 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
728 } u; 1025 } *u;
729 struct dirent *entp; 1026 struct dirent *entp;
730 char *name, *names; 1027 char *name, *names;
731 int memlen = 4096; 1028 int memlen = 4096;
732 int memofs = 0; 1029 int memofs = 0;
733 int res = 0; 1030 int res = 0;
734 int errorno; 1031 int errorno;
735 1032
736 if (!dirp) 1033 LOCK (wrklock);
737 return -1; 1034 self->dirp = dirp = opendir (req->ptr1);
738 1035 self->dbuf = u = malloc (sizeof (*u));
1036 req->flags |= FLAG_PTR2_FREE;
739 names = malloc (memlen); 1037 req->ptr2 = names = malloc (memlen);
1038 UNLOCK (wrklock);
1039
1040 if (dirp && u && names)
1041 for (;;)
1042 {
1043 errno = 0;
1044 readdir_r (dirp, &u->d, &entp);
1045
1046 if (!entp)
1047 break;
1048
1049 name = entp->d_name;
1050
1051 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1052 {
1053 int len = strlen (name) + 1;
1054
1055 res++;
1056
1057 while (memofs + len > memlen)
1058 {
1059 memlen *= 2;
1060 LOCK (wrklock);
1061 req->ptr2 = names = realloc (names, memlen);
1062 UNLOCK (wrklock);
1063
1064 if (!names)
1065 break;
1066 }
1067
1068 memcpy (names + memofs, name, len);
1069 memofs += len;
1070 }
1071 }
1072
1073 if (errno)
1074 res = -1;
1075
1076 req->result = res;
1077}
1078
1079/*****************************************************************************/
1080
1081static void *aio_proc (void *thr_arg)
1082{
1083 aio_req req;
1084 struct timespec ts;
1085 worker *self = (worker *)thr_arg;
1086
1087 /* try to distribute timeouts somewhat evenly */
1088 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1089 * (1000000000UL / 1024UL);
740 1090
741 for (;;) 1091 for (;;)
742 { 1092 {
743 errno = 0, readdir_r (dirp, &u.d, &entp); 1093 ts.tv_sec = time (0) + IDLE_TIMEOUT;
744 1094
745 if (!entp) 1095 LOCK (reqlock);
746 break;
747
748 name = entp->d_name;
749
750 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
751 {
752 int len = strlen (name) + 1;
753
754 res++;
755
756 while (memofs + len > memlen)
757 {
758 memlen *= 2;
759 names = realloc (names, memlen);
760 if (!names)
761 break;
762 }
763
764 memcpy (names + memofs, name, len);
765 memofs += len;
766 }
767 }
768
769 errorno = errno;
770 closedir (dirp);
771
772 if (errorno)
773 {
774 free (names);
775 errno = errorno;
776 res = -1;
777 }
778
779 *namesp = (void *)names;
780 return res;
781}
782
783/*****************************************************************************/
784
785static void *aio_proc (void *thr_arg)
786{
787 aio_req req;
788 int type;
789
790 do
791 {
792 pthread_mutex_lock (&reqlock);
793 1096
794 for (;;) 1097 for (;;)
795 { 1098 {
796 req = reqs; 1099 self->req = req = reqq_shift (&req_queue);
797
798 if (reqs)
799 {
800 reqs = reqs->next;
801 if (!reqs) reqe = 0;
802 }
803 1100
804 if (req) 1101 if (req)
805 break; 1102 break;
806 1103
807 pthread_cond_wait (&reqwait, &reqlock); 1104 ++idle;
1105
1106 if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1107 == ETIMEDOUT)
1108 {
1109 if (idle > max_idle)
1110 {
1111 --idle;
1112 UNLOCK (reqlock);
1113 LOCK (wrklock);
1114 --started;
1115 UNLOCK (wrklock);
1116 goto quit;
1117 }
1118
1119 /* we are allowed to idle, so do so without any timeout */
1120 COND_WAIT (reqwait, reqlock);
1121 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1122 }
1123
1124 --idle;
808 } 1125 }
809 1126
810 pthread_mutex_unlock (&reqlock); 1127 --nready;
1128
1129 UNLOCK (reqlock);
811 1130
812 errno = 0; /* strictly unnecessary */ 1131 errno = 0; /* strictly unnecessary */
813 type = req->type; /* remember type for QUIT check */
814 1132
815 if (!(req->flags & FLAG_CANCELLED)) 1133 if (!(req->flags & FLAG_CANCELLED))
816 switch (type) 1134 switch (req->type)
817 { 1135 {
818 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 1136 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
819 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 1137 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
820 1138
821 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 1139 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
822 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; 1140 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
823 1141
824 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 1142 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
825 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 1143 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
826 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 1144 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
827 1145
1146 case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1147 case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1148 case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1149 case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1150
828 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 1151 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
829 case REQ_CLOSE: req->result = close (req->fd); break; 1152 case REQ_CLOSE: req->result = close (req->int1); break;
830 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 1153 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
831 case REQ_RMDIR: req->result = rmdir (req->dataptr); break; 1154 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1155 case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
832 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; 1156 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
833 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; 1157 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
834 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 1158 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1159 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1160 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
835 1161
836 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 1162 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
837 case REQ_FSYNC: req->result = fsync (req->fd); break; 1163 case REQ_FSYNC: req->result = fsync (req->int1); break;
838 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; 1164 case REQ_READDIR: scandir_ (req, self); break;
839 1165
840 case REQ_SLEEP: 1166 case REQ_BUSY:
841 { 1167 {
842 struct timeval tv; 1168 struct timeval tv;
843 1169
844 tv.tv_sec = req->fd; 1170 tv.tv_sec = req->nv1;
845 tv.tv_usec = req->fd2; 1171 tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
846 1172
847 req->result = select (0, 0, 0, 0, &tv); 1173 req->result = select (0, 0, 0, 0, &tv);
848 } 1174 }
849 1175
1176 case REQ_UTIME:
1177 case REQ_FUTIME:
1178 {
1179 struct timeval tv[2];
1180 struct timeval *times;
1181
1182 if (req->nv1 != -1. || req->nv2 != -1.)
1183 {
1184 tv[0].tv_sec = req->nv1;
1185 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1186 tv[1].tv_sec = req->nv2;
1187 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1188
1189 times = tv;
1190 }
1191 else
1192 times = 0;
1193
1194
1195 req->result = req->type == REQ_FUTIME
1196 ? futimes (req->int1, times)
1197 : utimes (req->ptr1, times);
1198 }
1199
850 case REQ_GROUP: 1200 case REQ_GROUP:
851 case REQ_NOP: 1201 case REQ_NOP:
1202 break;
1203
852 case REQ_QUIT: 1204 case REQ_QUIT:
853 break; 1205 goto quit;
854 1206
855 default: 1207 default:
856 req->result = ENOSYS; 1208 req->result = -1;
857 break; 1209 break;
858 } 1210 }
859 1211
860 req->errorno = errno; 1212 req->errorno = errno;
861 1213
862 pthread_mutex_lock (&reslock); 1214 LOCK (reslock);
863 1215
864 req->next = 0; 1216 ++npending;
865 1217
866 if (rese) 1218 if (!reqq_push (&res_queue, req))
867 { 1219 {
868 rese->next = req;
869 rese = req;
870 }
871 else
872 {
873 rese = ress = req;
874
875 /* write a dummy byte to the pipe so fh becomes ready */ 1220 /* write a dummy byte to the pipe so fh becomes ready */
876 write (respipe [1], &respipe, 1); 1221 write (respipe [1], &respipe, 1);
1222
1223 /* optionally signal the main thread asynchronously */
1224 if (main_sig)
1225 pthread_kill (main_tid, main_sig);
877 } 1226 }
878 1227
879 pthread_mutex_unlock (&reslock); 1228 self->req = 0;
1229 worker_clear (self);
1230
1231 UNLOCK (reslock);
880 } 1232 }
881 while (type != REQ_QUIT); 1233
1234quit:
1235 LOCK (wrklock);
1236 worker_free (self);
1237 UNLOCK (wrklock);
882 1238
883 return 0; 1239 return 0;
884} 1240}
885 1241
886/*****************************************************************************/ 1242/*****************************************************************************/
887 1243
888static void atfork_prepare (void) 1244static void atfork_prepare (void)
889{ 1245{
890 pthread_mutex_lock (&reqlock); 1246 LOCK (wrklock);
891 pthread_mutex_lock (&reslock); 1247 LOCK (reqlock);
1248 LOCK (reslock);
892#if !HAVE_PREADWRITE 1249#if !HAVE_PREADWRITE
893 pthread_mutex_lock (&preadwritelock); 1250 LOCK (preadwritelock);
894#endif 1251#endif
895#if !HAVE_READDIR_R 1252#if !HAVE_READDIR_R
896 pthread_mutex_lock (&readdirlock); 1253 LOCK (readdirlock);
897#endif 1254#endif
898} 1255}
899 1256
900static void atfork_parent (void) 1257static void atfork_parent (void)
901{ 1258{
902#if !HAVE_READDIR_R 1259#if !HAVE_READDIR_R
903 pthread_mutex_unlock (&readdirlock); 1260 UNLOCK (readdirlock);
904#endif 1261#endif
905#if !HAVE_PREADWRITE 1262#if !HAVE_PREADWRITE
906 pthread_mutex_unlock (&preadwritelock); 1263 UNLOCK (preadwritelock);
907#endif 1264#endif
908 pthread_mutex_unlock (&reslock); 1265 UNLOCK (reslock);
909 pthread_mutex_unlock (&reqlock); 1266 UNLOCK (reqlock);
1267 UNLOCK (wrklock);
910} 1268}
911 1269
912static void atfork_child (void) 1270static void atfork_child (void)
913{ 1271{
914 aio_req prv; 1272 aio_req prv;
915 1273
916 started = 0; 1274 while (prv = reqq_shift (&req_queue))
1275 req_free (prv);
917 1276
918 while (reqs) 1277 while (prv = reqq_shift (&res_queue))
1278 req_free (prv);
1279
1280 while (wrk_first.next != &wrk_first)
919 { 1281 {
920 prv = reqs; 1282 worker *wrk = wrk_first.next;
921 reqs = prv->next; 1283
1284 if (wrk->req)
1285 req_free (wrk->req);
1286
1287 worker_clear (wrk);
922 req_free (prv); 1288 worker_free (wrk);
923 } 1289 }
924 1290
925 reqs = reqe = 0; 1291 started = 0;
926 1292 idle = 0;
927 while (ress) 1293 nreqs = 0;
928 { 1294 nready = 0;
929 prv = ress; 1295 npending = 0;
930 ress = prv->next;
931 req_free (prv);
932 }
933
934 ress = rese = 0;
935 1296
936 close (respipe [0]); 1297 close (respipe [0]);
937 close (respipe [1]); 1298 close (respipe [1]);
938 create_pipe (); 1299 create_pipe ();
939 1300
966PROTOTYPES: ENABLE 1327PROTOTYPES: ENABLE
967 1328
968BOOT: 1329BOOT:
969{ 1330{
970 HV *stash = gv_stashpv ("IO::AIO", 1); 1331 HV *stash = gv_stashpv ("IO::AIO", 1);
1332
971 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1333 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
972 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1334 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
973 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); 1335 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1336 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1337 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1338 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1339 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
974 1340
975 create_pipe (); 1341 create_pipe ();
976 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1342 ATFORK (atfork_prepare, atfork_parent, atfork_child);
977} 1343}
978 1344
979void 1345void
980min_parallel (nthreads) 1346max_poll_reqs (int nreqs)
981 int nthreads
982 PROTOTYPE: $ 1347 PROTOTYPE: $
1348 CODE:
1349 max_poll_reqs = nreqs;
983 1350
984void 1351void
985max_parallel (nthreads) 1352max_poll_time (double nseconds)
986 int nthreads
987 PROTOTYPE: $ 1353 PROTOTYPE: $
1354 CODE:
1355 max_poll_time = nseconds * AIO_TICKS;
1356
1357void
1358min_parallel (int nthreads)
1359 PROTOTYPE: $
1360
1361void
1362max_parallel (int nthreads)
1363 PROTOTYPE: $
1364
1365void
1366max_idle (int nthreads)
1367 PROTOTYPE: $
1368 CODE:
1369 set_max_idle (nthreads);
988 1370
989int 1371int
990max_outstanding (nreqs) 1372max_outstanding (int maxreqs)
991 int nreqs 1373 PROTOTYPE: $
992 PROTOTYPE: $
993 CODE: 1374 CODE:
994 RETVAL = max_outstanding; 1375 RETVAL = max_outstanding;
995 max_outstanding = nreqs; 1376 max_outstanding = maxreqs;
1377 OUTPUT:
1378 RETVAL
996 1379
997void 1380void
998aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1381aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
999 SV * pathname
1000 int flags
1001 int mode
1002 SV * callback
1003 PROTOTYPE: $$$;$ 1382 PROTOTYPE: $$$;$
1004 PPCODE: 1383 PPCODE:
1005{ 1384{
1006 dREQ; 1385 dREQ;
1007 1386
1008 req->type = REQ_OPEN; 1387 req->type = REQ_OPEN;
1009 req->data = newSVsv (pathname); 1388 req->sv1 = newSVsv (pathname);
1010 req->dataptr = SvPVbyte_nolen (req->data); 1389 req->ptr1 = SvPVbyte_nolen (req->sv1);
1011 req->fd = flags; 1390 req->int1 = flags;
1012 req->mode = mode; 1391 req->mode = mode;
1013 1392
1014 REQ_SEND; 1393 REQ_SEND;
1015} 1394}
1016 1395
1017void 1396void
1018aio_close (fh,callback=&PL_sv_undef) 1397aio_close (SV *fh, SV *callback=&PL_sv_undef)
1019 SV * fh
1020 SV * callback
1021 PROTOTYPE: $;$ 1398 PROTOTYPE: $;$
1022 ALIAS: 1399 ALIAS:
1023 aio_close = REQ_CLOSE 1400 aio_close = REQ_CLOSE
1024 aio_fsync = REQ_FSYNC 1401 aio_fsync = REQ_FSYNC
1025 aio_fdatasync = REQ_FDATASYNC 1402 aio_fdatasync = REQ_FDATASYNC
1026 PPCODE: 1403 PPCODE:
1027{ 1404{
1028 dREQ; 1405 dREQ;
1029 1406
1030 req->type = ix; 1407 req->type = ix;
1031 req->fh = newSVsv (fh); 1408 req->sv1 = newSVsv (fh);
1032 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1409 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1033 1410
1034 REQ_SEND (req); 1411 REQ_SEND (req);
1035} 1412}
1036 1413
1037void 1414void
1038aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1415aio_read (SV *fh, UV offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)
1039 SV * fh
1040 UV offset
1041 UV length
1042 SV * data
1043 UV dataoffset
1044 SV * callback
1045 ALIAS: 1416 ALIAS:
1046 aio_read = REQ_READ 1417 aio_read = REQ_READ
1047 aio_write = REQ_WRITE 1418 aio_write = REQ_WRITE
1048 PROTOTYPE: $$$$$;$ 1419 PROTOTYPE: $$$$$;$
1049 PPCODE: 1420 PPCODE:
1050{ 1421{
1051 aio_req req;
1052 STRLEN svlen; 1422 STRLEN svlen;
1053 char *svptr = SvPVbyte (data, svlen); 1423 char *svptr = SvPVbyte (data, svlen);
1054 1424
1055 SvUPGRADE (data, SVt_PV); 1425 SvUPGRADE (data, SVt_PV);
1056 SvPOK_on (data); 1426 SvPOK_on (data);
1068 length = svlen - dataoffset; 1438 length = svlen - dataoffset;
1069 } 1439 }
1070 else 1440 else
1071 { 1441 {
1072 /* read: grow scalar as necessary */ 1442 /* read: grow scalar as necessary */
1073 svptr = SvGROW (data, length + dataoffset); 1443 svptr = SvGROW (data, length + dataoffset + 1);
1074 } 1444 }
1075 1445
1076 if (length < 0) 1446 if (length < 0)
1077 croak ("length must not be negative"); 1447 croak ("length must not be negative");
1078 1448
1079 { 1449 {
1080 dREQ; 1450 dREQ;
1081 1451
1082 req->type = ix; 1452 req->type = ix;
1083 req->fh = newSVsv (fh); 1453 req->sv1 = newSVsv (fh);
1084 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1454 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1085 : IoOFP (sv_2io (fh))); 1455 : IoOFP (sv_2io (fh)));
1086 req->offset = offset; 1456 req->offs = offset;
1087 req->length = length; 1457 req->size = length;
1088 req->data = SvREFCNT_inc (data); 1458 req->sv2 = SvREFCNT_inc (data);
1089 req->dataptr = (char *)svptr + dataoffset; 1459 req->ptr1 = (char *)svptr + dataoffset;
1460 req->stroffset = dataoffset;
1090 1461
1091 if (!SvREADONLY (data)) 1462 if (!SvREADONLY (data))
1092 { 1463 {
1093 SvREADONLY_on (data); 1464 SvREADONLY_on (data);
1094 req->data2ptr = (void *)data; 1465 req->flags |= FLAG_SV2_RO_OFF;
1095 } 1466 }
1096 1467
1097 REQ_SEND; 1468 REQ_SEND;
1098 } 1469 }
1099} 1470}
1100 1471
1101void 1472void
1473aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1474 PROTOTYPE: $$;$
1475 PPCODE:
1476{
1477 SV *data;
1478 dREQ;
1479
1480 data = newSV (NAME_MAX);
1481 SvPOK_on (data);
1482
1483 req->type = REQ_READLINK;
1484 req->sv1 = newSVsv (path);
1485 req->ptr2 = SvPVbyte_nolen (req->sv1);
1486 req->sv2 = data;
1487 req->ptr1 = SvPVbyte_nolen (data);
1488
1489 REQ_SEND;
1490}
1491
1492void
1102aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1493aio_sendfile (SV *out_fh, SV *in_fh, UV in_offset, UV length, SV *callback=&PL_sv_undef)
1103 SV * out_fh
1104 SV * in_fh
1105 UV in_offset
1106 UV length
1107 SV * callback
1108 PROTOTYPE: $$$$;$ 1494 PROTOTYPE: $$$$;$
1109 PPCODE: 1495 PPCODE:
1110{ 1496{
1111 dREQ; 1497 dREQ;
1112 1498
1113 req->type = REQ_SENDFILE; 1499 req->type = REQ_SENDFILE;
1114 req->fh = newSVsv (out_fh); 1500 req->sv1 = newSVsv (out_fh);
1115 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1501 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1116 req->fh2 = newSVsv (in_fh); 1502 req->sv2 = newSVsv (in_fh);
1117 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1503 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1118 req->offset = in_offset; 1504 req->offs = in_offset;
1119 req->length = length; 1505 req->size = length;
1120 1506
1121 REQ_SEND; 1507 REQ_SEND;
1122} 1508}
1123 1509
1124void 1510void
1125aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1511aio_readahead (SV *fh, UV offset, IV length, SV *callback=&PL_sv_undef)
1126 SV * fh
1127 UV offset
1128 IV length
1129 SV * callback
1130 PROTOTYPE: $$$;$ 1512 PROTOTYPE: $$$;$
1131 PPCODE: 1513 PPCODE:
1132{ 1514{
1133 dREQ; 1515 dREQ;
1134 1516
1135 req->type = REQ_READAHEAD; 1517 req->type = REQ_READAHEAD;
1136 req->fh = newSVsv (fh); 1518 req->sv1 = newSVsv (fh);
1137 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1519 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1138 req->offset = offset; 1520 req->offs = offset;
1139 req->length = length; 1521 req->size = length;
1140 1522
1141 REQ_SEND; 1523 REQ_SEND;
1142} 1524}
1143 1525
1144void 1526void
1145aio_stat (fh_or_path,callback=&PL_sv_undef) 1527aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1146 SV * fh_or_path
1147 SV * callback
1148 ALIAS: 1528 ALIAS:
1149 aio_stat = REQ_STAT 1529 aio_stat = REQ_STAT
1150 aio_lstat = REQ_LSTAT 1530 aio_lstat = REQ_LSTAT
1151 PPCODE: 1531 PPCODE:
1152{ 1532{
1153 dREQ; 1533 dREQ;
1154 1534
1155 New (0, req->statdata, 1, Stat_t); 1535 req->ptr2 = malloc (sizeof (Stat_t));
1156 if (!req->statdata) 1536 if (!req->ptr2)
1157 { 1537 {
1158 req_free (req); 1538 req_free (req);
1159 croak ("out of memory during aio_req->statdata allocation"); 1539 croak ("out of memory during aio_stat statdata allocation");
1160 } 1540 }
1541
1542 req->flags |= FLAG_PTR2_FREE;
1543 req->sv1 = newSVsv (fh_or_path);
1161 1544
1162 if (SvPOK (fh_or_path)) 1545 if (SvPOK (fh_or_path))
1163 { 1546 {
1164 req->type = ix; 1547 req->type = ix;
1165 req->data = newSVsv (fh_or_path);
1166 req->dataptr = SvPVbyte_nolen (req->data); 1548 req->ptr1 = SvPVbyte_nolen (req->sv1);
1167 } 1549 }
1168 else 1550 else
1169 { 1551 {
1170 req->type = REQ_FSTAT; 1552 req->type = REQ_FSTAT;
1171 req->fh = newSVsv (fh_or_path);
1172 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1553 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1173 } 1554 }
1174 1555
1175 REQ_SEND; 1556 REQ_SEND;
1176} 1557}
1177 1558
1178void 1559void
1560aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1561 PPCODE:
1562{
1563 dREQ;
1564
1565 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1566 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1567 req->sv1 = newSVsv (fh_or_path);
1568
1569 if (SvPOK (fh_or_path))
1570 {
1571 req->type = REQ_UTIME;
1572 req->ptr1 = SvPVbyte_nolen (req->sv1);
1573 }
1574 else
1575 {
1576 req->type = REQ_FUTIME;
1577 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1578 }
1579
1580 REQ_SEND;
1581}
1582
1583void
1584aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1585 PPCODE:
1586{
1587 dREQ;
1588
1589 req->mode = mode;
1590 req->sv1 = newSVsv (fh_or_path);
1591
1592 if (SvPOK (fh_or_path))
1593 {
1594 req->type = REQ_CHMOD;
1595 req->ptr1 = SvPVbyte_nolen (req->sv1);
1596 }
1597 else
1598 {
1599 req->type = REQ_FCHMOD;
1600 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1601 }
1602
1603 REQ_SEND;
1604}
1605
1606void
1607aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1608 PPCODE:
1609{
1610 dREQ;
1611
1612 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1613 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1614 req->sv1 = newSVsv (fh_or_path);
1615
1616 if (SvPOK (fh_or_path))
1617 {
1618 req->type = REQ_CHOWN;
1619 req->ptr1 = SvPVbyte_nolen (req->sv1);
1620 }
1621 else
1622 {
1623 req->type = REQ_FCHOWN;
1624 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1625 }
1626
1627 REQ_SEND;
1628}
1629
1630void
1179aio_unlink (pathname,callback=&PL_sv_undef) 1631aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1180 SV * pathname
1181 SV * callback
1182 ALIAS: 1632 ALIAS:
1183 aio_unlink = REQ_UNLINK 1633 aio_unlink = REQ_UNLINK
1184 aio_rmdir = REQ_RMDIR 1634 aio_rmdir = REQ_RMDIR
1185 aio_readdir = REQ_READDIR 1635 aio_readdir = REQ_READDIR
1186 PPCODE: 1636 PPCODE:
1187{ 1637{
1188 dREQ; 1638 dREQ;
1189 1639
1190 req->type = ix; 1640 req->type = ix;
1191 req->data = newSVsv (pathname); 1641 req->sv1 = newSVsv (pathname);
1192 req->dataptr = SvPVbyte_nolen (req->data); 1642 req->ptr1 = SvPVbyte_nolen (req->sv1);
1643
1644 REQ_SEND;
1645}
1646
1647void
1648aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1649 PPCODE:
1650{
1651 dREQ;
1193 1652
1653 req->type = REQ_MKDIR;
1654 req->sv1 = newSVsv (pathname);
1655 req->ptr1 = SvPVbyte_nolen (req->sv1);
1656 req->mode = mode;
1657
1194 REQ_SEND; 1658 REQ_SEND;
1195} 1659}
1196 1660
1197void 1661void
1198aio_link (oldpath,newpath,callback=&PL_sv_undef) 1662aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1199 SV * oldpath
1200 SV * newpath
1201 SV * callback
1202 ALIAS: 1663 ALIAS:
1203 aio_link = REQ_LINK 1664 aio_link = REQ_LINK
1204 aio_symlink = REQ_SYMLINK 1665 aio_symlink = REQ_SYMLINK
1205 aio_rename = REQ_RENAME 1666 aio_rename = REQ_RENAME
1206 PPCODE: 1667 PPCODE:
1207{ 1668{
1208 dREQ; 1669 dREQ;
1209 1670
1210 req->type = ix; 1671 req->type = ix;
1211 req->fh = newSVsv (oldpath); 1672 req->sv2 = newSVsv (oldpath);
1212 req->data2ptr = SvPVbyte_nolen (req->fh); 1673 req->ptr2 = SvPVbyte_nolen (req->sv2);
1213 req->data = newSVsv (newpath); 1674 req->sv1 = newSVsv (newpath);
1214 req->dataptr = SvPVbyte_nolen (req->data); 1675 req->ptr1 = SvPVbyte_nolen (req->sv1);
1215 1676
1216 REQ_SEND; 1677 REQ_SEND;
1217} 1678}
1218 1679
1219void 1680void
1220aio_sleep (delay,callback=&PL_sv_undef) 1681aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1221 double delay
1222 SV * callback
1223 PPCODE: 1682 PPCODE:
1224{ 1683{
1225 dREQ; 1684 dREQ;
1226 1685
1227 req->type = REQ_SLEEP; 1686 req->type = REQ_MKNOD;
1228 req->fd = delay < 0. ? 0 : delay; 1687 req->sv1 = newSVsv (pathname);
1229 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1688 req->ptr1 = SvPVbyte_nolen (req->sv1);
1230 1689 req->mode = (mode_t)mode;
1690 req->offs = dev;
1691
1231 REQ_SEND; 1692 REQ_SEND;
1232} 1693}
1233 1694
1234void 1695void
1696aio_busy (double delay, SV *callback=&PL_sv_undef)
1697 PPCODE:
1698{
1699 dREQ;
1700
1701 req->type = REQ_BUSY;
1702 req->nv1 = delay < 0. ? 0. : delay;
1703
1704 REQ_SEND;
1705}
1706
1707void
1235aio_group (callback=&PL_sv_undef) 1708aio_group (SV *callback=&PL_sv_undef)
1236 SV * callback
1237 PROTOTYPE: ;$ 1709 PROTOTYPE: ;$
1238 PPCODE: 1710 PPCODE:
1239{ 1711{
1240 dREQ; 1712 dREQ;
1241 1713
1242 req->type = REQ_GROUP; 1714 req->type = REQ_GROUP;
1715
1243 req_send (req); 1716 req_send (req);
1244
1245 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1717 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1246} 1718}
1247 1719
1248void 1720void
1249aio_nop (callback=&PL_sv_undef) 1721aio_nop (SV *callback=&PL_sv_undef)
1250 SV * callback
1251 PPCODE: 1722 PPCODE:
1252{ 1723{
1253 dREQ; 1724 dREQ;
1254 1725
1255 req->type = REQ_NOP; 1726 req->type = REQ_NOP;
1256 1727
1257 REQ_SEND; 1728 REQ_SEND;
1258} 1729}
1259 1730
1260#if 0 1731int
1261 1732aioreq_pri (int pri = 0)
1262void 1733 PROTOTYPE: ;$
1263aio_pri (int pri = DEFAULT_PRI)
1264 CODE: 1734 CODE:
1735 RETVAL = next_pri - PRI_BIAS;
1736 if (items > 0)
1737 {
1265 if (pri < PRI_MIN) pri = PRI_MIN; 1738 if (pri < PRI_MIN) pri = PRI_MIN;
1266 if (pri > PRI_MAX) pri = PRI_MAX; 1739 if (pri > PRI_MAX) pri = PRI_MAX;
1267 next_pri = pri + PRI_BIAS; 1740 next_pri = pri + PRI_BIAS;
1741 }
1742 OUTPUT:
1743 RETVAL
1268 1744
1269#endif 1745void
1746aioreq_nice (int nice = 0)
1747 CODE:
1748 nice = next_pri - nice;
1749 if (nice < PRI_MIN) nice = PRI_MIN;
1750 if (nice > PRI_MAX) nice = PRI_MAX;
1751 next_pri = nice + PRI_BIAS;
1270 1752
1271void 1753void
1272flush () 1754flush ()
1273 PROTOTYPE: 1755 PROTOTYPE:
1274 CODE: 1756 CODE:
1276 { 1758 {
1277 poll_wait (); 1759 poll_wait ();
1278 poll_cb (); 1760 poll_cb ();
1279 } 1761 }
1280 1762
1281void 1763int
1282poll() 1764poll()
1283 PROTOTYPE: 1765 PROTOTYPE:
1284 CODE: 1766 CODE:
1285 if (nreqs)
1286 {
1287 poll_wait (); 1767 poll_wait ();
1288 poll_cb (); 1768 RETVAL = poll_cb ();
1289 } 1769 OUTPUT:
1770 RETVAL
1290 1771
1291int 1772int
1292poll_fileno() 1773poll_fileno()
1293 PROTOTYPE: 1774 PROTOTYPE:
1294 CODE: 1775 CODE:
1306 1787
1307void 1788void
1308poll_wait() 1789poll_wait()
1309 PROTOTYPE: 1790 PROTOTYPE:
1310 CODE: 1791 CODE:
1311 if (nreqs)
1312 poll_wait (); 1792 poll_wait ();
1793
1794void
1795setsig (int signum = SIGIO)
1796 PROTOTYPE: ;$
1797 CODE:
1798{
1799 if (block_sig_level)
1800 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1801
1802 LOCK (reslock);
1803 main_tid = pthread_self ();
1804 main_sig = signum;
1805 UNLOCK (reslock);
1806
1807 if (main_sig && npending)
1808 pthread_kill (main_tid, main_sig);
1809}
1810
1811void
1812aio_block (SV *cb)
1813 PROTOTYPE: &
1814 PPCODE:
1815{
1816 int count;
1817
1818 block_sig ();
1819 PUSHMARK (SP);
1820 PUTBACK;
1821 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1822 SPAGAIN;
1823 unblock_sig ();
1824
1825 if (SvTRUE (ERRSV))
1826 croak (0);
1827
1828 XSRETURN (count);
1829}
1313 1830
1314int 1831int
1315nreqs() 1832nreqs()
1316 PROTOTYPE: 1833 PROTOTYPE:
1317 CODE: 1834 CODE:
1318 RETVAL = nreqs; 1835 RETVAL = nreqs;
1319 OUTPUT: 1836 OUTPUT:
1320 RETVAL 1837 RETVAL
1321 1838
1839int
1840nready()
1841 PROTOTYPE:
1842 CODE:
1843 RETVAL = get_nready ();
1844 OUTPUT:
1845 RETVAL
1846
1847int
1848npending()
1849 PROTOTYPE:
1850 CODE:
1851 RETVAL = get_npending ();
1852 OUTPUT:
1853 RETVAL
1854
1855int
1856nthreads()
1857 PROTOTYPE:
1858 CODE:
1859 if (WORDACCESS_UNSAFE) LOCK (wrklock);
1860 RETVAL = started;
1861 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1862 OUTPUT:
1863 RETVAL
1864
1322PROTOTYPES: DISABLE 1865PROTOTYPES: DISABLE
1323 1866
1324MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1867MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1325 1868
1326void 1869void
1327cancel (aio_req_ornot req) 1870cancel (aio_req_ornot req)
1328 PROTOTYPE:
1329 CODE: 1871 CODE:
1330 req_cancel (req); 1872 req_cancel (req);
1331 1873
1332void 1874void
1333cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1875cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1342 PPCODE: 1884 PPCODE:
1343{ 1885{
1344 int i; 1886 int i;
1345 aio_req req; 1887 aio_req req;
1346 1888
1889 if (main_sig && !block_sig_level)
1890 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1891
1347 if (grp->fd == 2) 1892 if (grp->int1 == 2)
1348 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1893 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1349 1894
1350 for (i = 1; i < items; ++i ) 1895 for (i = 1; i < items; ++i )
1351 { 1896 {
1352 if (GIMME_V != G_VOID) 1897 if (GIMME_V != G_VOID)
1354 1899
1355 req = SvAIO_REQ (ST (i)); 1900 req = SvAIO_REQ (ST (i));
1356 1901
1357 if (req) 1902 if (req)
1358 { 1903 {
1359 ++grp->length; 1904 ++grp->size;
1360 req->grp = grp; 1905 req->grp = grp;
1361 1906
1362 req->grp_prev = 0; 1907 req->grp_prev = 0;
1363 req->grp_next = grp->grp_first; 1908 req->grp_next = grp->grp_first;
1364 1909
1369 } 1914 }
1370 } 1915 }
1371} 1916}
1372 1917
1373void 1918void
1919cancel_subs (aio_req_ornot req)
1920 CODE:
1921 req_cancel_subs (req);
1922
1923void
1374result (aio_req grp, ...) 1924result (aio_req grp, ...)
1375 CODE: 1925 CODE:
1376{ 1926{
1377 int i; 1927 int i;
1928 AV *av;
1929
1930 grp->errorno = errno;
1931
1378 AV *av = newAV (); 1932 av = newAV ();
1379 1933
1380 for (i = 1; i < items; ++i ) 1934 for (i = 1; i < items; ++i )
1381 av_push (av, newSVsv (ST (i))); 1935 av_push (av, newSVsv (ST (i)));
1382 1936
1383 SvREFCNT_dec (grp->data); 1937 SvREFCNT_dec (grp->sv1);
1384 grp->data = (SV *)av; 1938 grp->sv1 = (SV *)av;
1385} 1939}
1386 1940
1387void 1941void
1942errno (aio_req grp, int errorno = errno)
1943 CODE:
1944 grp->errorno = errorno;
1945
1946void
1388feed_limit (aio_req grp, int limit) 1947limit (aio_req grp, int limit)
1389 CODE: 1948 CODE:
1390 grp->fd2 = limit; 1949 grp->int2 = limit;
1391 aio_grp_feed (grp); 1950 aio_grp_feed (grp);
1392 1951
1393void 1952void
1394feed (aio_req grp, SV *callback=&PL_sv_undef) 1953feed (aio_req grp, SV *callback=&PL_sv_undef)
1395 CODE: 1954 CODE:
1396{ 1955{
1397 SvREFCNT_dec (grp->fh2); 1956 SvREFCNT_dec (grp->sv2);
1398 grp->fh2 = newSVsv (callback); 1957 grp->sv2 = newSVsv (callback);
1399 1958
1400 if (grp->fd2 <= 0) 1959 if (grp->int2 <= 0)
1401 grp->fd2 = 2; 1960 grp->int2 = 2;
1402 1961
1403 aio_grp_feed (grp); 1962 aio_grp_feed (grp);
1404} 1963}
1405 1964

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