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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.15 by root, Sat Jul 23 18:19:56 2005 UTC vs.
Revision 1.151 by root, Tue Jul 14 00:13:36 2009 UTC

1#include "libeio/xthread.h"
2
3#include <errno.h>
4
1#include "EXTERN.h" 5#include "EXTERN.h"
2#include "perl.h" 6#include "perl.h"
3#include "XSUB.h" 7#include "XSUB.h"
4 8
9#include "schmorp.h"
10
11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h>
5#include <sys/types.h> 14#include <sys/types.h>
6#include <sys/stat.h> 15#include <sys/stat.h>
7
8#include <unistd.h> 16#include <limits.h>
9#include <fcntl.h> 17#include <fcntl.h>
10#include <signal.h>
11#include <sched.h> 18#include <sched.h>
12#if __linux 19
20/* perl namespace pollution */
21#undef VERSION
22
23#ifdef _WIN32
24
25# define EIO_STRUCT_DIRENT Direntry_t
26# undef malloc
27# undef free
28
29// perl overrides all those nice win32 functions
30# undef open
31# undef read
32# undef write
33# undef send
34# undef recv
35# undef stat
36# undef fstat
37# define lstat stat
38# undef truncate
39# undef ftruncate
40# undef open
41# undef close
42# undef unlink
43# undef rmdir
44# undef rename
45# undef lseek
46
47# define chown(a,b,c) (errno = ENOSYS, -1)
48# define fchown(a,b,c) (errno = ENOSYS, -1)
49# define fchmod(a,b) (errno = ENOSYS, -1)
50# define symlink(a,b) (errno = ENOSYS, -1)
51# define readlink(a,b,c) (errno = ENOSYS, -1)
52# define mknod(a,b,c) (errno = ENOSYS, -1)
53# define truncate(a,b) (errno = ENOSYS, -1)
54# define ftruncate(fd,o) chsize ((fd), (o))
55# define fsync(fd) _commit (fd)
56# define opendir(fd) (errno = ENOSYS, 0)
57# define readdir(fd) (errno = ENOSYS, -1)
58# define closedir(fd) (errno = ENOSYS, -1)
59# define mkdir(a,b) mkdir (a)
60
61#else
62
63# include <sys/time.h>
13#include <sys/syscall.h> 64# include <sys/select.h>
65# include <unistd.h>
66# include <utime.h>
67# include <signal.h>
68# define EIO_STRUCT_DIRENT struct dirent
69
14#endif 70#endif
15 71
16#include <pthread.h> 72/* perl stupidly overrides readdir and maybe others */
73/* with thread-unsafe versions, imagine that :( */
74#undef readdir
75#undef opendir
76#undef closedir
17 77
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 78#define EIO_STRUCT_STAT Stat_t
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
21 79
22#if __ia64 80/* use NV for 32 bit perls as it allows larger offsets */
23# define STACKSIZE 65536 81#if IVSIZE >= 8
82# define VAL64 IV
83# define SvVAL64 SvIV
84# define newSVval64 newSViv
24#else 85#else
25# define STACKSIZE 4096 86# define VAL64 NV
87# define SvVAL64 SvNV
88# define newSVval64 newSVnv
26#endif 89#endif
27 90
91/*****************************************************************************/
92
93#if __GNUC__ >= 3
94# define expect(expr,value) __builtin_expect ((expr),(value))
95#else
96# define expect(expr,value) (expr)
97#endif
98
99#define expect_false(expr) expect ((expr) != 0, 0)
100#define expect_true(expr) expect ((expr) != 0, 1)
101
102/*****************************************************************************/
103
104static HV *stash;
105typedef SV SV8; /* byte-sv, used for argument-checking */
106typedef int aio_rfd; /* read file desriptor */
107typedef int aio_wfd; /* write file descriptor */
108
109#define AIO_REQ_KLASS "IO::AIO::REQ"
110#define AIO_GRP_KLASS "IO::AIO::GRP"
111
112#define EIO_REQ_MEMBERS \
113 SV *callback; \
114 SV *sv1, *sv2; \
115 STRLEN stroffset; \
116 SV *self;
117
118#define EIO_NO_WRAPPERS 1
119
120#include "libeio/eio.h"
121
122#ifndef POSIX_FADV_NORMAL
123# define POSIX_FADV_NORMAL 0
124# define NO_FADVISE 1
125#endif
126
127#ifndef POSIX_FADV_SEQUENTIAL
128# define POSIX_FADV_SEQUENTIAL 0
129#endif
130
131#ifndef POSIX_FADV_RANDOM
132# define POSIX_FADV_RANDOM 0
133#endif
134
135#ifndef POSIX_FADV_NOREUSE
136# define POSIX_FADV_NOREUSE 0
137#endif
138
139#ifndef POSIX_FADV_WILLNEED
140# define POSIX_FADV_WILLNEED 0
141#endif
142
143#ifndef POSIX_FADV_DONTNEED
144# define POSIX_FADV_DONTNEED 0
145#endif
146
147static int req_invoke (eio_req *req);
148#define EIO_FINISH(req) req_invoke (req)
149static void req_destroy (eio_req *grp);
150#define EIO_DESTROY(req) req_destroy (req)
151
28enum { 152enum {
29 REQ_QUIT, 153 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
30 REQ_OPEN, REQ_CLOSE,
31 REQ_READ, REQ_WRITE, REQ_READAHEAD,
32 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
33 REQ_FSYNC, REQ_FDATASYNC,
34}; 154};
35 155
36typedef struct aio_cb { 156#include "libeio/eio.c"
37 struct aio_cb *volatile next;
38 157
39 int type;
40
41 int fd;
42 off_t offset;
43 size_t length;
44 ssize_t result;
45 mode_t mode; /* open */
46 int errorno;
47 SV *data, *callback, *fh;
48 void *dataptr;
49 STRLEN dataoffset;
50
51 Stat_t *statdata;
52} aio_cb;
53
54typedef aio_cb *aio_req; 158typedef eio_req *aio_req;
159typedef eio_req *aio_req_ornot;
55 160
56static int started; 161static SV *on_next_submit;
57static volatile int nreqs; 162static int next_pri = EIO_PRI_DEFAULT;
58static int max_outstanding = 1<<30; 163static int max_outstanding;
59static int respipe [2];
60 164
61static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 165static int respipe_osf [2], respipe [2] = { -1, -1 };
62static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
63static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
64 166
65static volatile aio_req reqs, reqe; /* queue start, queue end */ 167static void req_destroy (aio_req req);
66static volatile aio_req ress, rese; /* queue start, queue end */ 168static void req_cancel (aio_req req);
67 169
68static void 170static void want_poll (void)
69poll_wait ()
70{ 171{
71 if (nreqs && !ress) 172 /* write a dummy byte to the pipe so fh becomes ready */
173 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
174}
175
176static void done_poll (void)
177{
178 /* read any signals sent by the worker threads */
179 char buf [4];
180 while (respipe_read (respipe [0], buf, 4) == 4)
181 ;
182}
183
184/* must be called at most once */
185static SV *req_sv (aio_req req, const char *klass)
186{
187 if (!req->self)
72 { 188 {
73 fd_set rfd; 189 req->self = (SV *)newHV ();
74 FD_ZERO(&rfd); 190 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
75 FD_SET(respipe [0], &rfd);
76
77 select (respipe [0] + 1, &rfd, 0, 0, 0);
78 } 191 }
79}
80 192
81static int 193 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
82poll_cb () 194}
195
196static aio_req SvAIO_REQ (SV *sv)
197{
198 MAGIC *mg;
199
200 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
201 croak ("object of class " AIO_REQ_KLASS " expected");
202
203 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
204
205 return mg ? (aio_req)mg->mg_ptr : 0;
206}
207
208static void aio_grp_feed (aio_req grp)
209{
210 if (grp->sv2 && SvOK (grp->sv2))
211 {
212 dSP;
213
214 ENTER;
215 SAVETMPS;
216 PUSHMARK (SP);
217 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
218 PUTBACK;
219 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
220 SPAGAIN;
221 FREETMPS;
222 LEAVE;
223 }
224}
225
226static void req_submit (eio_req *req)
227{
228 eio_submit (req);
229
230 if (expect_false (on_next_submit))
231 {
232 dSP;
233 SV *cb = sv_2mortal (on_next_submit);
234
235 on_next_submit = 0;
236
237 PUSHMARK (SP);
238 PUTBACK;
239 call_sv (cb, G_DISCARD | G_EVAL);
240 }
241}
242
243static int req_invoke (eio_req *req)
83{ 244{
84 dSP; 245 dSP;
85 int count = 0;
86 aio_req req, prv;
87 246
88 pthread_mutex_lock (&reslock); 247 if (req->flags & FLAG_SV2_RO_OFF)
248 SvREADONLY_off (req->sv2);
89 249
90 { 250 if (!EIO_CANCELLED (req) && req->callback)
91 /* read any signals sent by the worker threads */
92 char buf [32];
93 while (read (respipe [0], buf, 32) > 0)
94 ;
95 }
96
97 req = ress;
98 ress = rese = 0;
99
100 pthread_mutex_unlock (&reslock);
101
102 while (req)
103 { 251 {
104 nreqs--; 252 ENTER;
253 SAVETMPS;
254 PUSHMARK (SP);
255 EXTEND (SP, 1);
105 256
106 if (req->type == REQ_QUIT) 257 switch (req->type)
107 started--;
108 else
109 { 258 {
110 int errorno = errno; 259 case EIO_READDIR:
111 errno = req->errorno;
112
113 if (req->type == REQ_READ)
114 SvCUR_set (req->data, req->dataoffset
115 + req->result > 0 ? req->result : 0);
116
117 if (req->data)
118 SvREFCNT_dec (req->data);
119
120 if (req->fh)
121 SvREFCNT_dec (req->fh);
122
123 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
124 { 260 {
125 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 261 SV *rv = &PL_sv_undef;
126 PL_laststatval = req->result;
127 PL_statcache = *(req->statdata);
128 262
129 Safefree (req->statdata); 263 if (req->result >= 0)
264 {
265 int i;
266 char *names = (char *)req->ptr2;
267 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
268 AV *av = newAV ();
269
270 av_extend (av, req->result - 1);
271
272 for (i = 0; i < req->result; ++i)
273 {
274 if (req->int1 & EIO_READDIR_DENTS)
275 {
276 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
277
278 if (req->int1 & EIO_READDIR_CUSTOM2)
279 {
280 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
281 AV *avent = newAV ();
282
283 av_extend (avent, 2);
284
285 if (!sv_type [ent->type])
286 {
287 sv_type [ent->type] = newSViv (ent->type);
288 SvREADONLY_on (sv_type [ent->type]);
289 }
290
291 av_store (avent, 0, namesv);
292 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
293 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
294
295 av_store (av, i, newRV_noinc ((SV *)avent));
296 }
297 else
298 av_store (av, i, namesv);
299
300 ++ent;
301 }
302 else
303 {
304 SV *name = newSVpv (names, 0);
305 av_store (av, i, name);
306 names += SvCUR (name) + 1;
307 }
308 }
309
310 rv = sv_2mortal (newRV_noinc ((SV *)av));
311 }
312
313 PUSHs (rv);
314
315 if (req->int1 & EIO_READDIR_CUSTOM1)
316 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
130 } 317 }
318 break;
131 319
132 ENTER; 320 case EIO_OPEN:
133 PUSHMARK (SP);
134 XPUSHs (sv_2mortal (newSViv (req->result)));
135
136 if (req->type == REQ_OPEN)
137 { 321 {
138 /* convert fd to fh */ 322 /* convert fd to fh */
139 SV *fh; 323 SV *fh = &PL_sv_undef;
140 324
141 PUTBACK; 325 if (req->result >= 0)
142 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 326 {
143 SPAGAIN; 327 GV *gv = (GV *)sv_newmortal ();
328 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
329 char sym [64];
330 int symlen;
331
332 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
333 gv_init (gv, stash, sym, symlen, 0);
144 334
145 fh = SvREFCNT_inc (POPs); 335 symlen = snprintf (
336 sym,
337 sizeof (sym),
338 "%s&=%d",
339 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
340 (int)req->result
341 );
146 342
343 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
344 fh = (SV *)gv;
345 }
346
147 PUSHMARK (SP); 347 PUSHs (fh);
148 XPUSHs (sv_2mortal (fh));
149 } 348 }
349 break;
150 350
151 if (SvOK (req->callback)) 351 case EIO_GROUP:
352 req->int1 = 2; /* mark group as finished */
353
354 if (req->sv1)
355 {
356 int i;
357 AV *av = (AV *)req->sv1;
358
359 EXTEND (SP, AvFILL (av) + 1);
360 for (i = 0; i <= AvFILL (av); ++i)
361 PUSHs (*av_fetch (av, i, 0));
362 }
363 break;
364
365 case EIO_NOP:
366 case EIO_BUSY:
367 break;
368
369 case EIO_READLINK:
370 if (req->result > 0)
371 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
372 break;
373
374 case EIO_STAT:
375 case EIO_LSTAT:
376 case EIO_FSTAT:
377 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
378 PL_laststatval = req->result;
379 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
380 PUSHs (sv_2mortal (newSViv (req->result)));
381 break;
382
383 case EIO_READ:
152 { 384 {
153 PUTBACK; 385 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
154 call_sv (req->callback, G_VOID | G_EVAL); 386 *SvEND (req->sv2) = 0;
155 SPAGAIN; 387 SvPOK_only (req->sv2);
388 SvSETMAGIC (req->sv2);
389 PUSHs (sv_2mortal (newSViv (req->result)));
156 } 390 }
157
158 LEAVE;
159
160 if (req->callback)
161 SvREFCNT_dec (req->callback);
162
163 errno = errorno;
164 count++;
165 }
166
167 prv = req;
168 req = req->next;
169 Safefree (prv);
170
171 /* TODO: croak on errors? */
172 }
173
174 return count;
175}
176
177static void *aio_proc(void *arg);
178
179static void
180start_thread (void)
181{
182 sigset_t fullsigset, oldsigset;
183 pthread_t tid;
184 pthread_attr_t attr;
185
186 pthread_attr_init (&attr);
187 pthread_attr_setstacksize (&attr, STACKSIZE);
188 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
189
190 sigfillset (&fullsigset);
191 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
192
193 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
194 started++;
195
196 sigprocmask (SIG_SETMASK, &oldsigset, 0);
197}
198
199static void
200send_req (aio_req req)
201{
202 nreqs++;
203
204 pthread_mutex_lock (&reqlock);
205
206 req->next = 0;
207
208 if (reqe)
209 {
210 reqe->next = req;
211 reqe = req;
212 }
213 else
214 reqe = reqs = req;
215
216 pthread_cond_signal (&reqwait);
217 pthread_mutex_unlock (&reqlock);
218
219 while (nreqs > max_outstanding)
220 {
221 poll_wait ();
222 poll_cb ();
223 }
224}
225
226static void
227end_thread (void)
228{
229 aio_req req;
230 New (0, req, 1, aio_cb);
231 req->type = REQ_QUIT;
232
233 send_req (req);
234}
235
236static void *
237aio_proc (void *thr_arg)
238{
239 aio_req req;
240 int type;
241
242 do
243 {
244 pthread_mutex_lock (&reqlock);
245
246 for (;;)
247 {
248 req = reqs;
249
250 if (reqs)
251 {
252 reqs = reqs->next;
253 if (!reqs) reqe = 0;
254 }
255
256 if (req)
257 break; 391 break;
258 392
259 pthread_cond_wait (&reqwait, &reqlock);
260 }
261
262 pthread_mutex_unlock (&reqlock);
263
264 errno = 0; /* strictly unnecessary */
265
266 type = req->type;
267
268 switch (type)
269 {
270 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
271 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
272#if SYS_readahead
273 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
274#else
275 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
276#endif
277
278 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
279 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
280 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
281
282 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
283 case REQ_CLOSE: req->result = close (req->fd); break;
284 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
285
286 case REQ_FSYNC: req->result = fsync (req->fd); break;
287 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
288
289 case REQ_QUIT: 393 case EIO_DUP2:
290 break; 394 if (req->result > 0)
395 req->result = 0;
396 /* FALLTHROUGH */
291 397
292 default: 398 default:
293 req->result = ENOSYS; 399 PUSHs (sv_2mortal (newSViv (req->result)));
294 break; 400 break;
295 } 401 }
296 402
297 req->errorno = errno; 403 errno = req->errorno;
298 404
299 pthread_mutex_lock (&reslock); 405 PUTBACK;
406 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
407 SPAGAIN;
300 408
301 req->next = 0; 409 FREETMPS;
410 LEAVE;
302 411
303 if (rese) 412 PUTBACK;
304 {
305 rese->next = req;
306 rese = req;
307 }
308 else
309 {
310 rese = ress = req;
311
312 /* write a dummy byte to the pipe so fh becomes ready */
313 write (respipe [1], &respipe, 1);
314 }
315
316 pthread_mutex_unlock (&reslock);
317 } 413 }
318 while (type != REQ_QUIT);
319 414
415 return !!SvTRUE (ERRSV);
416}
417
418static void req_destroy (aio_req req)
419{
420 if (req->self)
421 {
422 sv_unmagic (req->self, PERL_MAGIC_ext);
423 SvREFCNT_dec (req->self);
424 }
425
426 SvREFCNT_dec (req->sv1);
427 SvREFCNT_dec (req->sv2);
428 SvREFCNT_dec (req->callback);
429
430 Safefree (req);
431}
432
433static void req_cancel_subs (aio_req grp)
434{
435 aio_req sub;
436
437 if (grp->type != EIO_GROUP)
438 return;
439
440 SvREFCNT_dec (grp->sv2);
441 grp->sv2 = 0;
442
443 eio_grp_cancel (grp);
444}
445
446#ifdef USE_SOCKETS_AS_HANDLES
447# define TO_SOCKET(x) (win32_get_osfhandle (x))
448#else
449# define TO_SOCKET(x) (x)
450#endif
451
452static void
453create_respipe (void)
454{
455 int old_readfd = respipe [0];
456
457 if (respipe [1] >= 0)
458 respipe_close (TO_SOCKET (respipe [1]));
459
460#ifdef _WIN32
461 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
462#else
463 if (pipe (respipe))
464#endif
465 croak ("unable to initialize result pipe");
466
467 if (old_readfd >= 0)
468 {
469 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
470 croak ("unable to initialize result pipe(2)");
471
472 respipe_close (respipe [0]);
473 respipe [0] = old_readfd;
474 }
475
476#ifdef _WIN32
477 int arg = 1;
478 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
479 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
480#else
481 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
482 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
483#endif
484 croak ("unable to initialize result pipe(3)");
485
486 respipe_osf [0] = TO_SOCKET (respipe [0]);
487 respipe_osf [1] = TO_SOCKET (respipe [1]);
488}
489
490static void poll_wait (void)
491{
492 fd_set rfd;
493
494 while (eio_nreqs ())
495 {
496 int size;
497
498 X_LOCK (reslock);
499 size = res_queue.size;
500 X_UNLOCK (reslock);
501
502 if (size)
503 return;
504
505 etp_maybe_start_thread ();
506
507 FD_ZERO (&rfd);
508 FD_SET (respipe [0], &rfd);
509
510 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
511 }
512}
513
514static int poll_cb (void)
515{
516 for (;;)
517 {
518 int res = eio_poll ();
519
520 if (res > 0)
521 croak (0);
522
523 if (!max_outstanding || max_outstanding > eio_nreqs ())
524 return res;
525
526 poll_wait ();
527 }
528}
529
530static void atfork_child (void)
531{
532 create_respipe ();
533}
534
535static SV *
536get_cb (SV *cb_sv)
537{
538 HV *st;
539 GV *gvp;
540 CV *cv;
541
542 if (!SvOK (cb_sv))
320 return 0; 543 return 0;
544
545 cv = sv_2cv (cb_sv, &st, &gvp, 0);
546
547 if (!cv)
548 croak ("IO::AIO callback must be undef or a CODE reference");
549
550 return (SV *)cv;
321} 551}
552
553#define dREQ \
554 SV *cb_cv; \
555 aio_req req; \
556 int req_pri = next_pri; \
557 next_pri = EIO_PRI_DEFAULT; \
558 \
559 cb_cv = get_cb (callback); \
560 \
561 Newz (0, req, 1, eio_req); \
562 if (!req) \
563 croak ("out of memory during eio_req allocation"); \
564 \
565 req->callback = SvREFCNT_inc (cb_cv); \
566 req->pri = req_pri
567
568#define REQ_SEND \
569 PUTBACK; \
570 req_submit (req); \
571 SPAGAIN; \
572 \
573 if (GIMME_V != G_VOID) \
574 XPUSHs (req_sv (req, AIO_REQ_KLASS));
322 575
323MODULE = IO::AIO PACKAGE = IO::AIO 576MODULE = IO::AIO PACKAGE = IO::AIO
324 577
325PROTOTYPES: ENABLE 578PROTOTYPES: ENABLE
326 579
327BOOT: 580BOOT:
328{ 581{
329 if (pipe (respipe)) 582 static const struct {
330 croak ("unable to initialize result pipe"); 583 const char *name;
584 IV iv;
585 } *civ, const_iv[] = {
586# define const_iv(name, value) { # name, (IV) value },
587# define const_eio(name) { # name, (IV) EIO_ ## name },
588 const_iv (EXDEV , EXDEV)
589 const_iv (ENOSYS , ENOSYS)
590 const_iv (O_RDONLY, O_RDONLY)
591 const_iv (O_WRONLY, O_WRONLY)
592 const_iv (O_CREAT , O_CREAT)
593 const_iv (O_TRUNC , O_TRUNC)
594#ifndef _WIN32
595 const_iv (S_IFIFO , S_IFIFO)
596#endif
597 const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
598 const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
599 const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
600 const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
601 const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
602 const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
331 603
332 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 604 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
333 croak ("cannot set result pipe to nonblocking mode"); 605 const_eio (SYNC_FILE_RANGE_WRITE)
606 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
334 607
335 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 608 const_eio (READDIR_DENTS)
336 croak ("cannot set result pipe to nonblocking mode"); 609 const_eio (READDIR_DIRS_FIRST)
337} 610 const_eio (READDIR_STAT_ORDER)
611 const_eio (READDIR_FOUND_UNKNOWN)
338 612
613 const_eio (DT_UNKNOWN)
614 const_eio (DT_FIFO)
615 const_eio (DT_CHR)
616 const_eio (DT_DIR)
617 const_eio (DT_BLK)
618 const_eio (DT_REG)
619 const_eio (DT_LNK)
620 const_eio (DT_SOCK)
621 const_eio (DT_WHT)
622 };
623
624 stash = gv_stashpv ("IO::AIO", 1);
625
626 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
627 newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
628
629 create_respipe ();
630
631 if (eio_init (want_poll, done_poll) < 0)
632 croak ("IO::AIO: unable to initialise eio library");
633
634 /* atfork child called in fifo order, so before eio's handler */
635 X_THREAD_ATFORK (0, 0, atfork_child);
636}
637
339void 638void
340min_parallel(nthreads) 639max_poll_reqs (int nreqs)
341 int nthreads
342 PROTOTYPE: $ 640 PROTOTYPE: $
343 CODE: 641 CODE:
344 while (nthreads > started) 642 eio_set_max_poll_reqs (nreqs);
345 start_thread ();
346 643
347void 644void
348max_parallel(nthreads) 645max_poll_time (double nseconds)
349 int nthreads
350 PROTOTYPE: $ 646 PROTOTYPE: $
351 CODE: 647 CODE:
648 eio_set_max_poll_time (nseconds);
649
650void
651min_parallel (int nthreads)
652 PROTOTYPE: $
653 CODE:
654 eio_set_min_parallel (nthreads);
655
656void
657max_parallel (int nthreads)
658 PROTOTYPE: $
659 CODE:
660 eio_set_max_parallel (nthreads);
661
662void
663max_idle (int nthreads)
664 PROTOTYPE: $
665 CODE:
666 eio_set_max_idle (nthreads);
667
668void
669max_outstanding (int maxreqs)
670 PROTOTYPE: $
671 CODE:
672 max_outstanding = maxreqs;
673
674void
675aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
676 PROTOTYPE: $$$;$
677 PPCODE:
352{ 678{
353 int cur = started; 679 dREQ;
354 while (cur > nthreads) 680
355 { 681 req->type = EIO_OPEN;
356 end_thread (); 682 req->sv1 = newSVsv (pathname);
683 req->ptr1 = SvPVbyte_nolen (req->sv1);
684 req->int1 = flags;
685 req->int2 = mode;
686
687 REQ_SEND;
688}
689
690void
691aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
692 PROTOTYPE: $;$
693 ALIAS:
694 aio_fsync = EIO_FSYNC
695 aio_fdatasync = EIO_FDATASYNC
696 PPCODE:
697{
698 int fd = s_fileno_croak (fh, 0);
699 dREQ;
700
701 req->type = ix;
702 req->sv1 = newSVsv (fh);
703 req->int1 = fd;
704
705 REQ_SEND (req);
706}
707
708void
709aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
710 PROTOTYPE: $$$$;$
711 PPCODE:
712{
713 int fd = s_fileno_croak (fh, 0);
714 dREQ;
715
716 req->type = EIO_SYNC_FILE_RANGE;
717 req->sv1 = newSVsv (fh);
718 req->int1 = fd;
719 req->offs = offset;
720 req->size = nbytes;
721 req->int2 = flags;
722
723 REQ_SEND (req);
724}
725
726void
727aio_close (SV *fh, SV *callback=&PL_sv_undef)
728 PROTOTYPE: $;$
729 PPCODE:
730{
731 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
732 int fd = s_fileno_croak (fh, 0);
733 dREQ;
734
735 if (close_pipe < 0)
736 {
737 int pipefd [2];
738
739 if (pipe (pipefd) < 0
740 || close (pipefd [1]) < 0
741 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
742 abort (); /*D*/
743
744 close_pipe = pipefd [0];
745 }
746
747 req->type = EIO_DUP2;
748 req->int1 = close_pipe;
749 req->sv2 = newSVsv (fh);
750 req->int2 = fd;
751
752 REQ_SEND (req);
753}
754
755void
756aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
757 ALIAS:
758 aio_read = EIO_READ
759 aio_write = EIO_WRITE
760 PROTOTYPE: $$$$$;$
761 PPCODE:
762{
763 STRLEN svlen;
764 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
765 char *svptr = SvPVbyte (data, svlen);
766 UV len = SvUV (length);
767
768 if (dataoffset < 0)
769 dataoffset += svlen;
770
771 if (dataoffset < 0 || dataoffset > svlen)
772 croak ("dataoffset outside of data scalar");
773
774 if (ix == EIO_WRITE)
775 {
776 /* write: check length and adjust. */
777 if (!SvOK (length) || len + dataoffset > svlen)
778 len = svlen - dataoffset;
779 }
780 else
781 {
782 /* read: check type and grow scalar as necessary */
783 SvUPGRADE (data, SVt_PV);
784 svptr = SvGROW (data, len + dataoffset + 1);
785 }
786
787 {
788 dREQ;
789
790 req->type = ix;
791 req->sv1 = newSVsv (fh);
792 req->int1 = fd;
793 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
794 req->size = len;
795 req->sv2 = SvREFCNT_inc (data);
796 req->ptr2 = (char *)svptr + dataoffset;
797 req->stroffset = dataoffset;
798
799 if (!SvREADONLY (data))
357 cur--; 800 {
801 SvREADONLY_on (data);
802 req->flags |= FLAG_SV2_RO_OFF;
358 } 803 }
359 804
360 while (started > nthreads) 805 REQ_SEND;
806 }
807}
808
809void
810aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
811 PROTOTYPE: $$;$
812 PPCODE:
813{
814 SV *data;
815 dREQ;
816
817 req->type = EIO_READLINK;
818 req->sv1 = newSVsv (path);
819 req->ptr1 = SvPVbyte_nolen (req->sv1);
820
821 REQ_SEND;
822}
823
824void
825aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
826 PROTOTYPE: $$$$;$
827 PPCODE:
828{
829 int ifd = s_fileno_croak (in_fh , 0);
830 int ofd = s_fileno_croak (out_fh, 1);
831 dREQ;
832
833 req->type = EIO_SENDFILE;
834 req->sv1 = newSVsv (out_fh);
835 req->int1 = ofd;
836 req->sv2 = newSVsv (in_fh);
837 req->int2 = ifd;
838 req->offs = in_offset;
839 req->size = length;
840
841 REQ_SEND;
842}
843
844void
845aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
846 PROTOTYPE: $$$;$
847 PPCODE:
848{
849 int fd = s_fileno_croak (fh, 0);
850 dREQ;
851
852 req->type = EIO_READAHEAD;
853 req->sv1 = newSVsv (fh);
854 req->int1 = fd;
855 req->offs = offset;
856 req->size = length;
857
858 REQ_SEND;
859}
860
861void
862aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
863 ALIAS:
864 aio_stat = EIO_STAT
865 aio_lstat = EIO_LSTAT
866 PPCODE:
867{
868 dREQ;
869
870 req->sv1 = newSVsv (fh_or_path);
871
872 if (SvPOK (req->sv1))
873 {
874 req->type = ix;
875 req->ptr1 = SvPVbyte_nolen (req->sv1);
876 }
877 else
878 {
879 req->type = EIO_FSTAT;
880 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
881 }
882
883 REQ_SEND;
884}
885
886void
887aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
888 PPCODE:
889{
890 dREQ;
891
892 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
893 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
894 req->sv1 = newSVsv (fh_or_path);
895
896 if (SvPOK (req->sv1))
897 {
898 req->type = EIO_UTIME;
899 req->ptr1 = SvPVbyte_nolen (req->sv1);
900 }
901 else
902 {
903 req->type = EIO_FUTIME;
904 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
905 }
906
907 REQ_SEND;
908}
909
910void
911aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
912 PPCODE:
913{
914 dREQ;
915
916 req->sv1 = newSVsv (fh_or_path);
917 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
918
919 if (SvPOK (req->sv1))
920 {
921 req->type = EIO_TRUNCATE;
922 req->ptr1 = SvPVbyte_nolen (req->sv1);
923 }
924 else
925 {
926 req->type = EIO_FTRUNCATE;
927 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
928 }
929
930 REQ_SEND;
931}
932
933void
934aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
935 ALIAS:
936 aio_chmod = EIO_CHMOD
937 aio_mkdir = EIO_MKDIR
938 PPCODE:
939{
940 dREQ;
941
942 req->int2 = mode;
943 req->sv1 = newSVsv (fh_or_path);
944
945 if (SvPOK (req->sv1))
946 {
947 req->type = ix;
948 req->ptr1 = SvPVbyte_nolen (req->sv1);
949 }
950 else
951 {
952 req->type = EIO_FCHMOD;
953 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
954 }
955
956 REQ_SEND;
957}
958
959void
960aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
961 PPCODE:
962{
963 dREQ;
964
965 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
966 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
967 req->sv1 = newSVsv (fh_or_path);
968
969 if (SvPOK (req->sv1))
970 {
971 req->type = EIO_CHOWN;
972 req->ptr1 = SvPVbyte_nolen (req->sv1);
973 }
974 else
975 {
976 req->type = EIO_FCHOWN;
977 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
978 }
979
980 REQ_SEND;
981}
982
983void
984aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
985 PPCODE:
986{
987 dREQ;
988
989 req->type = EIO_READDIR;
990 req->sv1 = newSVsv (pathname);
991 req->ptr1 = SvPVbyte_nolen (req->sv1);
992 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
993
994 if (flags & EIO_READDIR_DENTS)
995 req->int1 |= EIO_READDIR_CUSTOM2;
996
997 REQ_SEND;
998}
999
1000void
1001aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1002 ALIAS:
1003 aio_unlink = EIO_UNLINK
1004 aio_rmdir = EIO_RMDIR
1005 aio_readdir = EIO_READDIR
1006 PPCODE:
1007{
1008 dREQ;
1009
1010 req->type = ix;
1011 req->sv1 = newSVsv (pathname);
1012 req->ptr1 = SvPVbyte_nolen (req->sv1);
1013
1014 REQ_SEND;
1015}
1016
1017void
1018aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1019 ALIAS:
1020 aio_link = EIO_LINK
1021 aio_symlink = EIO_SYMLINK
1022 aio_rename = EIO_RENAME
1023 PPCODE:
1024{
1025 dREQ;
1026
1027 req->type = ix;
1028 req->sv1 = newSVsv (oldpath);
1029 req->ptr1 = SvPVbyte_nolen (req->sv1);
1030 req->sv2 = newSVsv (newpath);
1031 req->ptr2 = SvPVbyte_nolen (req->sv2);
1032
1033 REQ_SEND;
1034}
1035
1036void
1037aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1038 PPCODE:
1039{
1040 dREQ;
1041
1042 req->type = EIO_MKNOD;
1043 req->sv1 = newSVsv (pathname);
1044 req->ptr1 = SvPVbyte_nolen (req->sv1);
1045 req->int2 = (mode_t)mode;
1046 req->offs = dev;
1047
1048 REQ_SEND;
1049}
1050
1051void
1052aio_busy (double delay, SV *callback=&PL_sv_undef)
1053 PPCODE:
1054{
1055 dREQ;
1056
1057 req->type = EIO_BUSY;
1058 req->nv1 = delay < 0. ? 0. : delay;
1059
1060 REQ_SEND;
1061}
1062
1063void
1064aio_group (SV *callback=&PL_sv_undef)
1065 PROTOTYPE: ;$
1066 PPCODE:
1067{
1068 dREQ;
1069
1070 req->type = EIO_GROUP;
1071
1072 req_submit (req);
1073 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1074}
1075
1076void
1077aio_nop (SV *callback=&PL_sv_undef)
1078 ALIAS:
1079 aio_nop = EIO_NOP
1080 aio_sync = EIO_SYNC
1081 PPCODE:
1082{
1083 dREQ;
1084
1085 req->type = ix;
1086
1087 REQ_SEND;
1088}
1089
1090int
1091aioreq_pri (int pri = 0)
1092 PROTOTYPE: ;$
1093 CODE:
1094 RETVAL = next_pri;
1095 if (items > 0)
1096 {
1097 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1098 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1099 next_pri = pri;
1100 }
1101 OUTPUT:
1102 RETVAL
1103
1104void
1105aioreq_nice (int nice = 0)
1106 CODE:
1107 nice = next_pri - nice;
1108 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1109 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1110 next_pri = nice;
1111
1112void
1113flush ()
1114 PROTOTYPE:
1115 CODE:
1116 while (eio_nreqs ())
361 { 1117 {
362 poll_wait (); 1118 poll_wait ();
363 poll_cb (); 1119 poll_cb ();
364 } 1120 }
365}
366 1121
367int 1122int
368max_outstanding(nreqs)
369 int nreqs
370 PROTOTYPE: $
371 CODE:
372 RETVAL = max_outstanding;
373 max_outstanding = nreqs;
374
375void
376aio_open(pathname,flags,mode,callback=&PL_sv_undef)
377 SV * pathname
378 int flags
379 int mode
380 SV * callback
381 PROTOTYPE: $$$;$
382 CODE:
383{
384 aio_req req;
385
386 Newz (0, req, 1, aio_cb);
387
388 if (!req)
389 croak ("out of memory during aio_req allocation");
390
391 req->type = REQ_OPEN;
392 req->data = newSVsv (pathname);
393 req->dataptr = SvPV_nolen (req->data);
394 req->fd = flags;
395 req->mode = mode;
396 req->callback = SvREFCNT_inc (callback);
397
398 send_req (req);
399}
400
401void
402aio_close(fh,callback=&PL_sv_undef)
403 SV * fh
404 SV * callback
405 PROTOTYPE: $;$
406 ALIAS:
407 aio_close = REQ_CLOSE
408 aio_fsync = REQ_FSYNC
409 aio_fdatasync = REQ_FDATASYNC
410 CODE:
411{
412 aio_req req;
413
414 Newz (0, req, 1, aio_cb);
415
416 if (!req)
417 croak ("out of memory during aio_req allocation");
418
419 req->type = ix;
420 req->fh = newSVsv (fh);
421 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
422 req->callback = SvREFCNT_inc (callback);
423
424 send_req (req);
425}
426
427void
428aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
429 SV * fh
430 UV offset
431 IV length
432 SV * data
433 IV dataoffset
434 SV * callback
435 ALIAS:
436 aio_read = REQ_READ
437 aio_write = REQ_WRITE
438 PROTOTYPE: $$$$$;$
439 CODE:
440{
441 aio_req req;
442 STRLEN svlen;
443 char *svptr = SvPV (data, svlen);
444
445 SvUPGRADE (data, SVt_PV);
446 SvPOK_on (data);
447
448 if (dataoffset < 0)
449 dataoffset += svlen;
450
451 if (dataoffset < 0 || dataoffset > svlen)
452 croak ("data offset outside of string");
453
454 if (ix == REQ_WRITE)
455 {
456 /* write: check length and adjust. */
457 if (length < 0 || length + dataoffset > svlen)
458 length = svlen - dataoffset;
459 }
460 else
461 {
462 /* read: grow scalar as necessary */
463 svptr = SvGROW (data, length + dataoffset);
464 }
465
466 if (length < 0)
467 croak ("length must not be negative");
468
469 Newz (0, req, 1, aio_cb);
470
471 if (!req)
472 croak ("out of memory during aio_req allocation");
473
474 req->type = ix;
475 req->fh = newSVsv (fh);
476 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
477 : IoOFP (sv_2io (fh)));
478 req->offset = offset;
479 req->length = length;
480 req->data = SvREFCNT_inc (data);
481 req->dataptr = (char *)svptr + dataoffset;
482 req->callback = SvREFCNT_inc (callback);
483
484 send_req (req);
485}
486
487void
488aio_readahead(fh,offset,length,callback=&PL_sv_undef)
489 SV * fh
490 UV offset
491 IV length
492 SV * callback
493 PROTOTYPE: $$$;$
494 CODE:
495{
496 aio_req req;
497
498 if (length < 0)
499 croak ("length must not be negative");
500
501 Newz (0, req, 1, aio_cb);
502
503 if (!req)
504 croak ("out of memory during aio_req allocation");
505
506 req->type = REQ_READAHEAD;
507 req->fh = newSVsv (fh);
508 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
509 req->offset = offset;
510 req->length = length;
511 req->callback = SvREFCNT_inc (callback);
512
513 send_req (req);
514}
515
516void
517aio_stat(fh_or_path,callback=&PL_sv_undef)
518 SV * fh_or_path
519 SV * callback
520 ALIAS:
521 aio_stat = REQ_STAT
522 aio_lstat = REQ_LSTAT
523 CODE:
524{
525 aio_req req;
526
527 Newz (0, req, 1, aio_cb);
528
529 if (!req)
530 croak ("out of memory during aio_req allocation");
531
532 New (0, req->statdata, 1, Stat_t);
533
534 if (!req->statdata)
535 croak ("out of memory during aio_req->statdata allocation");
536
537 if (SvPOK (fh_or_path))
538 {
539 req->type = ix;
540 req->data = newSVsv (fh_or_path);
541 req->dataptr = SvPV_nolen (req->data);
542 }
543 else
544 {
545 req->type = REQ_FSTAT;
546 req->fh = newSVsv (fh_or_path);
547 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
548 }
549
550 req->callback = SvREFCNT_inc (callback);
551
552 send_req (req);
553}
554
555void
556aio_unlink(pathname,callback=&PL_sv_undef)
557 SV * pathname
558 SV * callback
559 CODE:
560{
561 aio_req req;
562
563 Newz (0, req, 1, aio_cb);
564
565 if (!req)
566 croak ("out of memory during aio_req allocation");
567
568 req->type = REQ_UNLINK;
569 req->data = newSVsv (pathname);
570 req->dataptr = SvPV_nolen (req->data);
571 req->callback = SvREFCNT_inc (callback);
572
573 send_req (req);
574}
575
576void
577flush()
578 PROTOTYPE:
579 CODE:
580 while (nreqs)
581 {
582 poll_wait ();
583 poll_cb ();
584 }
585
586void
587poll() 1123poll()
588 PROTOTYPE: 1124 PROTOTYPE:
589 CODE: 1125 CODE:
590 if (nreqs)
591 {
592 poll_wait (); 1126 poll_wait ();
593 poll_cb (); 1127 RETVAL = poll_cb ();
594 } 1128 OUTPUT:
1129 RETVAL
595 1130
596int 1131int
597poll_fileno() 1132poll_fileno()
598 PROTOTYPE: 1133 PROTOTYPE:
599 CODE: 1134 CODE:
… …
611 1146
612void 1147void
613poll_wait() 1148poll_wait()
614 PROTOTYPE: 1149 PROTOTYPE:
615 CODE: 1150 CODE:
616 if (nreqs)
617 poll_wait (); 1151 poll_wait ();
618 1152
619int 1153int
620nreqs() 1154nreqs()
621 PROTOTYPE: 1155 PROTOTYPE:
622 CODE: 1156 CODE:
623 RETVAL = nreqs; 1157 RETVAL = eio_nreqs ();
624 OUTPUT: 1158 OUTPUT:
625 RETVAL 1159 RETVAL
626 1160
1161int
1162nready()
1163 PROTOTYPE:
1164 CODE:
1165 RETVAL = eio_nready ();
1166 OUTPUT:
1167 RETVAL
1168
1169int
1170npending()
1171 PROTOTYPE:
1172 CODE:
1173 RETVAL = eio_npending ();
1174 OUTPUT:
1175 RETVAL
1176
1177int
1178nthreads()
1179 PROTOTYPE:
1180 CODE:
1181 RETVAL = eio_nthreads ();
1182 OUTPUT:
1183 RETVAL
1184
1185int
1186fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1187 PROTOTYPE: $$$$
1188 CODE:
1189#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1190 RETVAL = posix_fadvise (fh, offset, length, advice);
1191#else
1192 RETVAL = errno = ENOSYS;
1193#endif
1194 OUTPUT:
1195 RETVAL
1196
1197ssize_t
1198sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1199 PROTOTYPE: $$$$
1200 CODE:
1201 eio_sendfile_sync (ofh, ifh, offset, count);
1202
1203void _on_next_submit (SV *cb)
1204 CODE:
1205 SvREFCNT_dec (on_next_submit);
1206 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1207
1208PROTOTYPES: DISABLE
1209
1210MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1211
1212void
1213cancel (aio_req_ornot req)
1214 CODE:
1215 eio_cancel (req);
1216
1217void
1218cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1219 PPCODE:
1220{
1221 if (GIMME_V != G_VOID)
1222 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1223
1224 if (items > 1)
1225 {
1226 SV *cb_cv = get_cb (callback);
1227
1228 SvREFCNT_dec (req->callback);
1229 req->callback = SvREFCNT_inc (cb_cv);
1230 }
1231}
1232
1233MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1234
1235void
1236add (aio_req grp, ...)
1237 PPCODE:
1238{
1239 int i;
1240
1241 if (grp->int1 == 2)
1242 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1243
1244 for (i = 1; i < items; ++i )
1245 {
1246 aio_req req;
1247
1248 if (GIMME_V != G_VOID)
1249 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1250
1251 req = SvAIO_REQ (ST (i));
1252
1253 if (req)
1254 eio_grp_add (grp, req);
1255 }
1256}
1257
1258void
1259cancel_subs (aio_req_ornot req)
1260 CODE:
1261 req_cancel_subs (req);
1262
1263void
1264result (aio_req grp, ...)
1265 CODE:
1266{
1267 int i;
1268 AV *av;
1269
1270 grp->errorno = errno;
1271
1272 av = newAV ();
1273 av_extend (av, items - 1);
1274
1275 for (i = 1; i < items; ++i )
1276 av_push (av, newSVsv (ST (i)));
1277
1278 SvREFCNT_dec (grp->sv1);
1279 grp->sv1 = (SV *)av;
1280}
1281
1282void
1283errno (aio_req grp, int errorno = errno)
1284 CODE:
1285 grp->errorno = errorno;
1286
1287void
1288limit (aio_req grp, int limit)
1289 CODE:
1290 eio_grp_limit (grp, limit);
1291
1292void
1293feed (aio_req grp, SV *callback=&PL_sv_undef)
1294 CODE:
1295{
1296 SvREFCNT_dec (grp->sv2);
1297 grp->sv2 = newSVsv (callback);
1298 grp->feed = aio_grp_feed;
1299
1300 if (grp->int2 <= 0)
1301 grp->int2 = 2;
1302
1303 eio_grp_limit (grp, grp->int2);
1304}
1305

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