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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.43 by root, Sat Oct 21 23:06:04 2006 UTC vs.
Revision 1.64 by root, Mon Oct 23 23:54:41 2006 UTC

1#if __linux
2# define _GNU_SOURCE
3#endif
4
1#define _REENTRANT 1 5#define _REENTRANT 1
6
2#include <errno.h> 7#include <errno.h>
3 8
4#include "EXTERN.h" 9#include "EXTERN.h"
5#include "perl.h" 10#include "perl.h"
6#include "XSUB.h" 11#include "XSUB.h"
… …
9 14
10#include <pthread.h> 15#include <pthread.h>
11 16
12#include <stddef.h> 17#include <stddef.h>
13#include <errno.h> 18#include <errno.h>
19#include <sys/time.h>
20#include <sys/select.h>
14#include <sys/types.h> 21#include <sys/types.h>
15#include <sys/stat.h> 22#include <sys/stat.h>
16#include <limits.h> 23#include <limits.h>
17#include <unistd.h> 24#include <unistd.h>
18#include <fcntl.h> 25#include <fcntl.h>
… …
53 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 60 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54 REQ_FSYNC, REQ_FDATASYNC, 61 REQ_FSYNC, REQ_FDATASYNC,
55 REQ_UNLINK, REQ_RMDIR, REQ_RENAME, 62 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56 REQ_READDIR, 63 REQ_READDIR,
57 REQ_LINK, REQ_SYMLINK, 64 REQ_LINK, REQ_SYMLINK,
65 REQ_GROUP, REQ_NOP,
66 REQ_SLEEP,
58}; 67};
59 68
60#define AIO_CB_KLASS "IO::AIO::CB" 69#define AIO_REQ_KLASS "IO::AIO::REQ"
70#define AIO_GRP_KLASS "IO::AIO::GRP"
61 71
62typedef struct aio_cb 72typedef struct aio_cb
63{ 73{
64 struct aio_cb *grp_prev, *grp_next;
65 struct aio_grp *grp;
66
67 struct aio_cb *volatile next; 74 struct aio_cb *volatile next;
68
69 SV *self; /* the perl counterpart of this request, if any */
70 75
71 SV *data, *callback; 76 SV *data, *callback;
72 SV *fh, *fh2; 77 SV *fh, *fh2;
73 void *dataptr, *data2ptr; 78 void *dataptr, *data2ptr;
74 Stat_t *statdata; 79 Stat_t *statdata;
75 off_t offset; 80 off_t offset;
76 size_t length; 81 size_t length;
77 ssize_t result; 82 ssize_t result;
78 83
84 STRLEN dataoffset;
79 int type; 85 int type;
80 int fd, fd2; 86 int fd, fd2;
81 int errorno; 87 int errorno;
82 STRLEN dataoffset;
83 mode_t mode; /* open */ 88 mode_t mode; /* open */
89
84 unsigned char cancelled; 90 unsigned char flags;
91 unsigned char pri;
92
93 SV *self; /* the perl counterpart of this request, if any */
94 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
85} aio_cb; 95} aio_cb;
96
97enum {
98 FLAG_CANCELLED = 0x01,
99};
86 100
87typedef aio_cb *aio_req; 101typedef aio_cb *aio_req;
88typedef aio_cb *aio_req_ornot; 102typedef aio_cb *aio_req_ornot;
103
104enum {
105 PRI_MIN = -4,
106 PRI_MAX = 4,
107
108 DEFAULT_PRI = 0,
109 PRI_BIAS = -PRI_MIN,
110};
111
112static int next_pri = DEFAULT_PRI + PRI_BIAS;
89 113
90static int started, wanted; 114static int started, wanted;
91static volatile int nreqs; 115static volatile int nreqs;
92static int max_outstanding = 1<<30; 116static int max_outstanding = 1<<30;
93static int respipe [2]; 117static int respipe [2];
94 118
119#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
120# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
121#else
122# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
123#endif
124
95static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 125static pthread_mutex_t reslock = AIO_MUTEX_INIT;
96static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 126static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
97static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 127static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
98 128
99static volatile aio_req reqs, reqe; /* queue start, queue end */ 129static volatile aio_req reqs, reqe; /* queue start, queue end */
100static volatile aio_req ress, rese; /* queue start, queue end */ 130static volatile aio_req ress, rese; /* queue start, queue end */
101 131
102typedef struct aio_grp 132static void req_invoke (aio_req req);
103{ 133static void req_free (aio_req req);
104 struct aio_cb *first, *last;
105 SV *callback;
106 int busycount;
107} aio_grp;
108 134
109static void aio_grp_begin (aio_grp *grp) 135/* must be called at most once */
136static SV *req_sv (aio_req req, const char *klass)
110{ 137{
111 ++grp->busycount; 138 if (!req->self)
112} 139 {
140 req->self = (SV *)newHV ();
141 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
142 }
113 143
144 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
145}
146
147static aio_req SvAIO_REQ (SV *sv)
148{
149 MAGIC *mg;
150
151 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
152 croak ("object of class " AIO_REQ_KLASS " expected");
153
154 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
155
156 return mg ? (aio_req)mg->mg_ptr : 0;
157}
158
114static void aio_grp_end (aio_grp *grp) 159static void aio_grp_feed (aio_req grp)
115{ 160{
116 --grp->busycount; 161 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
162 {
163 int old_len = grp->length;
117 164
118 if (grp->busycount) 165 if (grp->fh2 && SvOK (grp->fh2))
166 {
167 dSP;
168
169 ENTER;
170 SAVETMPS;
171 PUSHMARK (SP);
172 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
173 PUTBACK;
174 call_sv (grp->fh2, G_VOID | G_EVAL);
175 SPAGAIN;
176 FREETMPS;
177 LEAVE;
178 }
179
180 /* stop if no progress has been made */
181 if (old_len == grp->length)
182 {
183 SvREFCNT_dec (grp->fh2);
184 grp->fh2 = 0;
185 break;
186 }
187 }
188}
189
190static void aio_grp_dec (aio_req grp)
191{
192 --grp->length;
193
194 /* call feeder, if applicable */
195 aio_grp_feed (grp);
196
197 /* finish, if done */
198 if (!grp->length && grp->fd)
199 {
200 req_invoke (grp);
201 req_free (grp);
202 }
203}
204
205static void poll_wait ()
206{
207 fd_set rfd;
208
209 while (nreqs)
210 {
211 aio_req req;
212#if !(__x86 || __x86_64) /* safe without sempahore on this archs */
213 pthread_mutex_lock (&reslock);
214#endif
215 req = ress;
216#if !(__x86 || __x86_64) /* safe without sempahore on this archs */
217 pthread_mutex_unlock (&reslock);
218#endif
219
220 if (req)
221 return;
222
223 FD_ZERO(&rfd);
224 FD_SET(respipe [0], &rfd);
225
226 select (respipe [0] + 1, &rfd, 0, 0, 0);
227 }
228}
229
230static void req_invoke (aio_req req)
231{
232 dSP;
233 int errorno = errno;
234
235 if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
119 return; 236 return;
120 237
121 SvREFCNT_dec (grp->callback); 238 errno = req->errorno;
122 grp->callback = 0;
123}
124 239
125static aio_grp *aio_grp_new () 240 ENTER;
126{ 241 SAVETMPS;
127 aio_grp *grp; 242 PUSHMARK (SP);
243 EXTEND (SP, 1);
128 244
129 Newz (0, grp, 1, aio_grp); 245 switch (req->type)
130 aio_grp_begin (grp); 246 {
247 case REQ_READDIR:
248 {
249 SV *rv = &PL_sv_undef;
131 250
132 return grp; 251 if (req->result >= 0)
133} 252 {
253 char *buf = req->data2ptr;
254 AV *av = newAV ();
134 255
135/* must be called at most once */ 256 while (req->result)
136static SV *req_sv (aio_req req) 257 {
137{ 258 SV *sv = newSVpv (buf, 0);
138 req->self = (SV *)newHV ();
139 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
140 259
141 return sv_bless (newRV_noinc (req->self), gv_stashpv (AIO_CB_KLASS, 1)); 260 av_push (av, sv);
142} 261 buf += SvCUR (sv) + 1;
262 req->result--;
263 }
143 264
144static aio_req SvAIO_REQ (SV *sv) 265 rv = sv_2mortal (newRV_noinc ((SV *)av));
145{ 266 }
146 if (!sv_derived_from (sv, AIO_CB_KLASS) || !SvROK (sv))
147 croak ("object of class " AIO_CB_KLASS " expected");
148 267
149 MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 268 PUSHs (rv);
269 }
270 break;
150 271
151 return mg ? (aio_req)mg->mg_ptr : 0; 272 case REQ_OPEN:
273 {
274 /* convert fd to fh */
275 SV *fh;
276
277 PUSHs (sv_2mortal (newSViv (req->result)));
278 PUTBACK;
279 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
280 SPAGAIN;
281
282 fh = SvREFCNT_inc (POPs);
283
284 PUSHMARK (SP);
285 XPUSHs (sv_2mortal (fh));
286 }
287 break;
288
289 case REQ_GROUP:
290 req->fd = 2; /* mark group as finished */
291
292 if (req->data)
293 {
294 int i;
295 AV *av = (AV *)req->data;
296
297 EXTEND (SP, AvFILL (av) + 1);
298 for (i = 0; i <= AvFILL (av); ++i)
299 PUSHs (*av_fetch (av, i, 0));
300 }
301 break;
302
303 case REQ_NOP:
304 case REQ_SLEEP:
305 break;
306
307 default:
308 PUSHs (sv_2mortal (newSViv (req->result)));
309 break;
310 }
311
312
313 PUTBACK;
314 call_sv (req->callback, G_VOID | G_EVAL);
315 SPAGAIN;
316
317 FREETMPS;
318 LEAVE;
319
320 errno = errorno;
321
322 if (SvTRUE (ERRSV))
323 {
324 req_free (req);
325 croak (0);
326 }
152} 327}
153 328
154static void req_free (aio_req req) 329static void req_free (aio_req req)
155{ 330{
331 if (req->grp)
332 {
333 aio_req grp = req->grp;
334
335 /* unlink request */
336 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
337 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
338
339 if (grp->grp_first == req)
340 grp->grp_first = req->grp_next;
341
342 aio_grp_dec (grp);
343 }
344
156 if (req->self) 345 if (req->self)
157 { 346 {
158 sv_unmagic (req->self, PERL_MAGIC_ext); 347 sv_unmagic (req->self, PERL_MAGIC_ext);
159 SvREFCNT_dec (req->self); 348 SvREFCNT_dec (req->self);
160 } 349 }
161 350
162 if (req->data)
163 SvREFCNT_dec (req->data); 351 SvREFCNT_dec (req->data);
164
165 if (req->fh)
166 SvREFCNT_dec (req->fh); 352 SvREFCNT_dec (req->fh);
167
168 if (req->fh2)
169 SvREFCNT_dec (req->fh2); 353 SvREFCNT_dec (req->fh2);
170
171 if (req->statdata)
172 Safefree (req->statdata);
173
174 if (req->callback)
175 SvREFCNT_dec (req->callback); 354 SvREFCNT_dec (req->callback);
355 Safefree (req->statdata);
176 356
177 if (req->type == REQ_READDIR && req->result >= 0) 357 if (req->type == REQ_READDIR && req->result >= 0)
178 free (req->data2ptr); 358 free (req->data2ptr);
179 359
180 Safefree (req); 360 Safefree (req);
181} 361}
182 362
183static void 363static void req_cancel (aio_req req)
184poll_wait ()
185{ 364{
186 if (nreqs && !ress) 365 req->flags |= FLAG_CANCELLED;
187 {
188 fd_set rfd;
189 FD_ZERO(&rfd);
190 FD_SET(respipe [0], &rfd);
191 366
192 select (respipe [0] + 1, &rfd, 0, 0, 0); 367 if (req->type == REQ_GROUP)
193 } 368 {
194} 369 aio_req sub;
195 370
196static int 371 for (sub = req->grp_first; sub; sub = sub->grp_next)
197poll_cb () 372 req_cancel (sub);
373 }
374}
375
376static int poll_cb ()
198{ 377{
199 dSP; 378 dSP;
200 int count = 0; 379 int count = 0;
201 int do_croak = 0; 380 int do_croak = 0;
202 aio_req req; 381 aio_req req;
… …
224 pthread_mutex_unlock (&reslock); 403 pthread_mutex_unlock (&reslock);
225 404
226 if (!req) 405 if (!req)
227 break; 406 break;
228 407
229 nreqs--; 408 --nreqs;
230 409
231 if (req->type == REQ_QUIT) 410 if (req->type == REQ_QUIT)
232 started--; 411 started--;
412 else if (req->type == REQ_GROUP && req->length)
413 {
414 req->fd = 1; /* mark request as delayed */
415 continue;
416 }
233 else 417 else
234 { 418 {
235 int errorno = errno;
236 errno = req->errorno;
237
238 if (req->type == REQ_READ) 419 if (req->type == REQ_READ)
239 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); 420 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
240 421
241 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) 422 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
242 SvREADONLY_off (req->data); 423 SvREADONLY_off (req->data);
… …
246 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 427 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
247 PL_laststatval = req->result; 428 PL_laststatval = req->result;
248 PL_statcache = *(req->statdata); 429 PL_statcache = *(req->statdata);
249 } 430 }
250 431
251 ENTER; 432 req_invoke (req);
252 PUSHMARK (SP);
253 433
254 if (req->type == REQ_READDIR)
255 {
256 SV *rv = &PL_sv_undef;
257
258 if (req->result >= 0)
259 {
260 char *buf = req->data2ptr;
261 AV *av = newAV ();
262
263 while (req->result)
264 {
265 SV *sv = newSVpv (buf, 0);
266
267 av_push (av, sv);
268 buf += SvCUR (sv) + 1;
269 req->result--;
270 }
271
272 rv = sv_2mortal (newRV_noinc ((SV *)av));
273 }
274
275 XPUSHs (rv);
276 }
277 else
278 {
279 XPUSHs (sv_2mortal (newSViv (req->result)));
280
281 if (req->type == REQ_OPEN)
282 {
283 /* convert fd to fh */
284 SV *fh;
285
286 PUTBACK;
287 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
288 SPAGAIN;
289
290 fh = SvREFCNT_inc (POPs);
291
292 PUSHMARK (SP);
293 XPUSHs (sv_2mortal (fh));
294 }
295 }
296
297 if (SvOK (req->callback) && !req->cancelled)
298 {
299 PUTBACK;
300 call_sv (req->callback, G_VOID | G_EVAL);
301 SPAGAIN;
302
303 if (SvTRUE (ERRSV))
304 {
305 req_free (req);
306 croak (0);
307 }
308 }
309
310 LEAVE;
311
312 errno = errorno;
313 count++; 434 count++;
314 } 435 }
315 436
316 req_free (req); 437 req_free (req);
317 } 438 }
… …
319 return count; 440 return count;
320} 441}
321 442
322static void *aio_proc(void *arg); 443static void *aio_proc(void *arg);
323 444
324static void
325start_thread (void) 445static void start_thread (void)
326{ 446{
327 sigset_t fullsigset, oldsigset; 447 sigset_t fullsigset, oldsigset;
328 pthread_t tid; 448 pthread_t tid;
329 pthread_attr_t attr; 449 pthread_attr_t attr;
330 450
… …
339 started++; 459 started++;
340 460
341 sigprocmask (SIG_SETMASK, &oldsigset, 0); 461 sigprocmask (SIG_SETMASK, &oldsigset, 0);
342} 462}
343 463
344static void
345req_send (aio_req req) 464static void req_send (aio_req req)
346{ 465{
347 while (started < wanted && nreqs >= started) 466 while (started < wanted && nreqs >= started)
348 start_thread (); 467 start_thread ();
349 468
350 nreqs++; 469 ++nreqs;
351 470
352 pthread_mutex_lock (&reqlock); 471 pthread_mutex_lock (&reqlock);
353 472
354 req->next = 0; 473 req->next = 0;
355 474
… …
374 493
375 poll_wait (); 494 poll_wait ();
376 } 495 }
377} 496}
378 497
379static void 498static void end_thread (void)
380end_thread (void)
381{ 499{
382 aio_req req; 500 aio_req req;
383 Newz (0, req, 1, aio_cb); 501 Newz (0, req, 1, aio_cb);
384 req->type = REQ_QUIT; 502 req->type = REQ_QUIT;
385 503
… …
436 * normal read/write by using a mutex. slows down execution a lot, 554 * normal read/write by using a mutex. slows down execution a lot,
437 * but that's your problem, not mine. 555 * but that's your problem, not mine.
438 */ 556 */
439static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; 557static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
440 558
441static ssize_t 559static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
442pread (int fd, void *buf, size_t count, off_t offset)
443{ 560{
444 ssize_t res; 561 ssize_t res;
445 off_t ooffset; 562 off_t ooffset;
446 563
447 pthread_mutex_lock (&preadwritelock); 564 pthread_mutex_lock (&preadwritelock);
… …
452 pthread_mutex_unlock (&preadwritelock); 569 pthread_mutex_unlock (&preadwritelock);
453 570
454 return res; 571 return res;
455} 572}
456 573
457static ssize_t
458pwrite (int fd, void *buf, size_t count, off_t offset) 574static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
459{ 575{
460 ssize_t res; 576 ssize_t res;
461 off_t ooffset; 577 off_t ooffset;
462 578
463 pthread_mutex_lock (&preadwritelock); 579 pthread_mutex_lock (&preadwritelock);
… …
476#endif 592#endif
477 593
478#if !HAVE_READAHEAD 594#if !HAVE_READAHEAD
479# define readahead aio_readahead 595# define readahead aio_readahead
480 596
481static ssize_t
482readahead (int fd, off_t offset, size_t count) 597static ssize_t readahead (int fd, off_t offset, size_t count)
483{ 598{
484 char readahead_buf[4096]; 599 char readahead_buf[4096];
485 600
486 while (count > 0) 601 while (count > 0)
487 { 602 {
… …
499#if !HAVE_READDIR_R 614#if !HAVE_READDIR_R
500# define readdir_r aio_readdir_r 615# define readdir_r aio_readdir_r
501 616
502static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; 617static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
503 618
504static int
505readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) 619static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
506{ 620{
507 struct dirent *e; 621 struct dirent *e;
508 int errorno; 622 int errorno;
509 623
510 pthread_mutex_lock (&readdirlock); 624 pthread_mutex_lock (&readdirlock);
… …
526 return e ? 0 : -1; 640 return e ? 0 : -1;
527} 641}
528#endif 642#endif
529 643
530/* sendfile always needs emulation */ 644/* sendfile always needs emulation */
531static ssize_t
532sendfile_ (int ofd, int ifd, off_t offset, size_t count) 645static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
533{ 646{
534 ssize_t res; 647 ssize_t res;
535 648
536 if (!count) 649 if (!count)
537 return 0; 650 return 0;
… …
619 732
620 return res; 733 return res;
621} 734}
622 735
623/* read a full directory */ 736/* read a full directory */
624static int
625scandir_ (const char *path, void **namesp) 737static int scandir_ (const char *path, void **namesp)
626{ 738{
627 DIR *dirp = opendir (path); 739 DIR *dirp = opendir (path);
628 union 740 union
629 { 741 {
630 struct dirent d; 742 struct dirent d;
… …
684 return res; 796 return res;
685} 797}
686 798
687/*****************************************************************************/ 799/*****************************************************************************/
688 800
689static void *
690aio_proc (void *thr_arg) 801static void *aio_proc (void *thr_arg)
691{ 802{
692 aio_req req; 803 aio_req req;
693 int type; 804 int type;
694 805
695 do 806 do
… …
713 } 824 }
714 825
715 pthread_mutex_unlock (&reqlock); 826 pthread_mutex_unlock (&reqlock);
716 827
717 errno = 0; /* strictly unnecessary */ 828 errno = 0; /* strictly unnecessary */
829 type = req->type; /* remember type for QUIT check */
718 830
719 if (!req->cancelled) 831 if (!(req->flags & FLAG_CANCELLED))
720 switch (req->type) 832 switch (type)
721 { 833 {
722 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 834 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
723 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 835 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
724 836
725 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 837 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
… …
739 851
740 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 852 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
741 case REQ_FSYNC: req->result = fsync (req->fd); break; 853 case REQ_FSYNC: req->result = fsync (req->fd); break;
742 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; 854 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
743 855
856 case REQ_SLEEP:
857 {
858 struct timeval tv;
859
860 tv.tv_sec = req->fd;
861 tv.tv_usec = req->fd2;
862
863 req->result = select (0, 0, 0, 0, &tv);
864 }
865
866 case REQ_GROUP:
867 case REQ_NOP:
744 case REQ_QUIT: 868 case REQ_QUIT:
745 break; 869 break;
746 870
747 default: 871 default:
748 req->result = ENOSYS; 872 req->result = ENOSYS;
… …
832 atfork_parent (); 956 atfork_parent ();
833} 957}
834 958
835#define dREQ \ 959#define dREQ \
836 aio_req req; \ 960 aio_req req; \
961 int req_pri = next_pri; \
962 next_pri = DEFAULT_PRI + PRI_BIAS; \
837 \ 963 \
838 if (SvOK (callback) && !SvROK (callback)) \ 964 if (SvOK (callback) && !SvROK (callback)) \
839 croak ("callback must be undef or of reference type"); \ 965 croak ("callback must be undef or of reference type"); \
840 \ 966 \
841 Newz (0, req, 1, aio_cb); \ 967 Newz (0, req, 1, aio_cb); \
842 if (!req) \ 968 if (!req) \
843 croak ("out of memory during aio_req allocation"); \ 969 croak ("out of memory during aio_req allocation"); \
844 \ 970 \
845 req->callback = newSVsv (callback) 971 req->callback = newSVsv (callback); \
972 req->pri = req_pri
846 973
847#define REQ_SEND \ 974#define REQ_SEND \
848 req_send (req); \ 975 req_send (req); \
849 \ 976 \
850 if (GIMME_V != G_VOID) \ 977 if (GIMME_V != G_VOID) \
851 XPUSHs (req_sv (req)); 978 XPUSHs (req_sv (req, AIO_REQ_KLASS));
852 979
853MODULE = IO::AIO PACKAGE = IO::AIO 980MODULE = IO::AIO PACKAGE = IO::AIO
854 981
855PROTOTYPES: ENABLE 982PROTOTYPES: ENABLE
856 983
… …
1103 req->dataptr = SvPVbyte_nolen (req->data); 1230 req->dataptr = SvPVbyte_nolen (req->data);
1104 1231
1105 REQ_SEND; 1232 REQ_SEND;
1106} 1233}
1107 1234
1235void
1236aio_sleep (delay,callback=&PL_sv_undef)
1237 double delay
1238 SV * callback
1239 PPCODE:
1240{
1241 dREQ;
1242
1243 req->type = REQ_SLEEP;
1244 req->fd = delay < 0. ? 0 : delay;
1245 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1246
1247 REQ_SEND;
1248}
1249
1250void
1251aio_group (callback=&PL_sv_undef)
1252 SV * callback
1253 PROTOTYPE: ;$
1254 PPCODE:
1255{
1256 dREQ;
1257
1258 req->type = REQ_GROUP;
1259 req_send (req);
1260
1261 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1262}
1263
1264void
1265aio_nop (callback=&PL_sv_undef)
1266 SV * callback
1267 PPCODE:
1268{
1269 dREQ;
1270
1271 req->type = REQ_NOP;
1272
1273 REQ_SEND;
1274}
1275
1108#if 0 1276#if 0
1109 1277
1110# undocumented, because it does not cancel active requests
1111void 1278void
1112cancel_most_requests () 1279aio_pri (int pri = DEFAULT_PRI)
1113 PROTOTYPE: 1280 CODE:
1114 CODE: 1281 if (pri < PRI_MIN) pri = PRI_MIN;
1115{ 1282 if (pri > PRI_MAX) pri = PRI_MAX;
1116 aio_req *req; 1283 next_pri = pri + PRI_BIAS;
1117
1118 pthread_mutex_lock (&reqlock);
1119 for (req = reqs; req; req = req->next)
1120 req->flags |= 1;
1121 pthread_mutex_unlock (&reqlock);
1122
1123 pthread_mutex_lock (&reslock);
1124 for (req = ress; req; req = req->next)
1125 req->flags |= 1;
1126 pthread_mutex_unlock (&reslock);
1127}
1128 1284
1129#endif 1285#endif
1130 1286
1131void 1287void
1132flush () 1288flush ()
… …
1177 CODE: 1333 CODE:
1178 RETVAL = nreqs; 1334 RETVAL = nreqs;
1179 OUTPUT: 1335 OUTPUT:
1180 RETVAL 1336 RETVAL
1181 1337
1338PROTOTYPES: DISABLE
1339
1182MODULE = IO::AIO PACKAGE = IO::AIO::CB 1340MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1183 1341
1184void 1342void
1185cancel (aio_req_ornot req) 1343cancel (aio_req_ornot req)
1186 PROTOTYPE: 1344 PROTOTYPE:
1187 CODE: 1345 CODE:
1188 req->cancelled = 1; 1346 req_cancel (req);
1189 1347
1348void
1349cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1350 CODE:
1351 SvREFCNT_dec (req->callback);
1352 req->callback = newSVsv (callback);
1353
1354MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1355
1356void
1357add (aio_req grp, ...)
1358 PPCODE:
1359{
1360 int i;
1361 aio_req req;
1362
1363 if (grp->fd == 2)
1364 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1365
1366 for (i = 1; i < items; ++i )
1367 {
1368 if (GIMME_V != G_VOID)
1369 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1370
1371 req = SvAIO_REQ (ST (i));
1372
1373 if (req)
1374 {
1375 ++grp->length;
1376 req->grp = grp;
1377
1378 req->grp_prev = 0;
1379 req->grp_next = grp->grp_first;
1380
1381 if (grp->grp_first)
1382 grp->grp_first->grp_prev = req;
1383
1384 grp->grp_first = req;
1385 }
1386 }
1387}
1388
1389void
1390result (aio_req grp, ...)
1391 CODE:
1392{
1393 int i;
1394 AV *av = newAV ();
1395
1396 for (i = 1; i < items; ++i )
1397 av_push (av, newSVsv (ST (i)));
1398
1399 SvREFCNT_dec (grp->data);
1400 grp->data = (SV *)av;
1401}
1402
1403void
1404feed_limit (aio_req grp, int limit)
1405 CODE:
1406 grp->fd2 = limit;
1407 aio_grp_feed (grp);
1408
1409void
1410feed (aio_req grp, SV *callback=&PL_sv_undef)
1411 CODE:
1412{
1413 SvREFCNT_dec (grp->fh2);
1414 grp->fh2 = newSVsv (callback);
1415
1416 if (grp->fd2 <= 0)
1417 grp->fd2 = 2;
1418
1419 aio_grp_feed (grp);
1420}
1421

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