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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.2 by root, Sun Jul 10 18:16:49 2005 UTC vs.
Revision 1.148 by root, Wed Jun 17 01:14:48 2009 UTC

1#define PERL_NO_GET_CONTEXT 1#include "libeio/xthread.h"
2
3#include <errno.h>
2 4
3#include "EXTERN.h" 5#include "EXTERN.h"
4#include "perl.h" 6#include "perl.h"
5#include "XSUB.h" 7#include "XSUB.h"
6 8
9#include <stddef.h>
10#include <stdlib.h>
11#include <errno.h>
7#include <sys/types.h> 12#include <sys/types.h>
8#include <sys/stat.h> 13#include <sys/stat.h>
9#include <unistd.h> 14#include <limits.h>
10#include <fcntl.h> 15#include <fcntl.h>
11#include <signal.h>
12#include <sched.h> 16#include <sched.h>
13#include <endian.h>
14 17
15#include <pthread.h> 18/* perl namespace pollution */
16#include <sys/syscall.h> 19#undef VERSION
17 20
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 21#ifdef _WIN32
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 22
22#if __i386 || __amd64 23# define EIO_STRUCT_DIRENT Direntry_t
23# define STACKSIZE ( 256 * sizeof (long)) 24# undef malloc
24#elif __ia64 25# undef free
25# define STACKSIZE (8192 * sizeof (long)) 26
27// perl overrides all those nice win32 functions
28# undef open
29# undef read
30# undef write
31# undef send
32# undef recv
33# undef stat
34# undef fstat
35# define lstat stat
36# undef truncate
37# undef ftruncate
38# undef open
39# undef close
40# undef unlink
41# undef rmdir
42# undef rename
43# undef lseek
44
45# define chown(a,b,c) (errno = ENOSYS, -1)
46# define fchown(a,b,c) (errno = ENOSYS, -1)
47# define fchmod(a,b) (errno = ENOSYS, -1)
48# define symlink(a,b) (errno = ENOSYS, -1)
49# define readlink(a,b,c) (errno = ENOSYS, -1)
50# define mknod(a,b,c) (errno = ENOSYS, -1)
51# define truncate(a,b) (errno = ENOSYS, -1)
52# define ftruncate(fd,o) chsize ((fd), (o))
53# define fsync(fd) _commit (fd)
54# define opendir(fd) (errno = ENOSYS, 0)
55# define readdir(fd) (errno = ENOSYS, -1)
56# define closedir(fd) (errno = ENOSYS, -1)
57# define mkdir(a,b) mkdir (a)
58
26#else 59#else
27# define STACKSIZE ( 512 * sizeof (long)) 60
61# include <sys/time.h>
62# include <sys/select.h>
63# include <unistd.h>
64# include <utime.h>
65# include <signal.h>
66# define EIO_STRUCT_DIRENT struct dirent
67
28#endif 68#endif
29 69
70/* perl stupidly overrides readdir and maybe others */
71/* with thread-unsafe versions, imagine that :( */
72#undef readdir
73#undef opendir
74#undef closedir
75
76#define EIO_STRUCT_STAT Stat_t
77
78/* use NV for 32 bit perls as it allows larger offsets */
79#if IVSIZE >= 8
80# define VAL64 IV
81# define SvVAL64 SvIV
82# define newSVval64 newSViv
83#else
84# define VAL64 NV
85# define SvVAL64 SvNV
86# define newSVval64 newSVnv
87#endif
88
89/*****************************************************************************/
90
91#if __GNUC__ >= 3
92# define expect(expr,value) __builtin_expect ((expr),(value))
93#else
94# define expect(expr,value) (expr)
95#endif
96
97#define expect_false(expr) expect ((expr) != 0, 0)
98#define expect_true(expr) expect ((expr) != 0, 1)
99
100/*****************************************************************************/
101
102static HV *stash;
103typedef SV SV8; /* byte-sv, used for argument-checking */
104typedef int aio_rfd; /* read file desriptor */
105typedef int aio_wfd; /* write file descriptor */
106
107#define AIO_REQ_KLASS "IO::AIO::REQ"
108#define AIO_GRP_KLASS "IO::AIO::GRP"
109
110#define EIO_REQ_MEMBERS \
111 SV *callback; \
112 SV *sv1, *sv2; \
113 STRLEN stroffset; \
114 SV *self;
115
116#define EIO_NO_WRAPPERS 1
117
118#include "libeio/eio.h"
119
120#ifndef POSIX_FADV_NORMAL
121# define POSIX_FADV_NORMAL 0
122#endif
123
124#ifndef POSIX_FADV_SEQUENTIAL
125# define POSIX_FADV_SEQUENTIAL 0
126#endif
127
128#ifndef POSIX_FADV_RANDOM
129# define POSIX_FADV_RANDOM 0
130#endif
131
132#ifndef POSIX_FADV_NOREUSE
133# define POSIX_FADV_NOREUSE 0
134#endif
135
136#ifndef POSIX_FADV_WILLNEED
137# define POSIX_FADV_WILLNEED 0
138#endif
139
140#ifndef POSIX_FADV_DONTNEED
141# define POSIX_FADV_DONTNEED 0
142#endif
143
144static int req_invoke (eio_req *req);
145#define EIO_FINISH(req) req_invoke (req)
146static void req_destroy (eio_req *grp);
147#define EIO_DESTROY(req) req_destroy (req)
148
30enum { 149enum {
31 REQ_QUIT, 150 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
32 REQ_OPEN, REQ_CLOSE,
33 REQ_READ, REQ_WRITE, REQ_READAHEAD,
34 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
35 REQ_FSYNC, REQ_FDATASYNC,
36}; 151};
37 152
38typedef struct aio_cb { 153#include "libeio/eio.c"
39 struct aio_cb *next;
40 154
41 int type;
42
43 int fd;
44 off_t offset;
45 size_t length;
46 ssize_t result;
47 mode_t mode; /* open */
48 int errorno;
49 SV *data, *callback;
50 void *dataptr;
51 STRLEN dataoffset;
52
53 Stat_t *statdata;
54} aio_cb;
55
56typedef aio_cb *aio_req; 155typedef eio_req *aio_req;
156typedef eio_req *aio_req_ornot;
57 157
58static int started; 158static SV *on_next_submit;
59static int nreqs; 159static int next_pri = EIO_PRI_DEFAULT;
60static int reqpipe[2], respipe[2]; 160static int max_outstanding;
61 161
62static aio_req qs, qe; /* queue start, queue end */ 162static int respipe_osf [2], respipe [2] = { -1, -1 };
63 163
64static void *aio_proc(void *arg); 164static void req_destroy (aio_req req);
165static void req_cancel (aio_req req);
65 166
66static void 167static void want_poll (void)
67start_thread (void)
68{ 168{
69 sigset_t fullsigset, oldsigset; 169 /* write a dummy byte to the pipe so fh becomes ready */
70 pthread_t tid; 170 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
71 pthread_attr_t attr;
72
73 pthread_attr_init (&attr);
74 pthread_attr_setstacksize (&attr, STACKSIZE);
75 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
76
77 sigfillset (&fullsigset);
78 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
79
80 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
81 started++;
82
83 sigprocmask (SIG_SETMASK, &oldsigset, 0);
84} 171}
85 172
86static void 173static void done_poll (void)
87send_reqs (void)
88{ 174{
89 /* this write is atomic */ 175 /* read any signals sent by the worker threads */
90 while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs) 176 char buf [4];
91 { 177 while (respipe_read (respipe [0], buf, 4) == 4)
92 qs = qs->next; 178 ;
93 if (!qs) qe = 0;
94 }
95} 179}
96 180
97static void 181/* must be called at most once */
98send_req (aio_req req) 182static SV *req_sv (aio_req req, const char *klass)
99{ 183{
100 nreqs++; 184 if (!req->self)
101 req->next = 0;
102
103 if (qe)
104 { 185 {
105 qe->next = req; 186 req->self = (SV *)newHV ();
106 qe = req; 187 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
107 } 188 }
108 else
109 qe = qs = req;
110 189
111 send_reqs (); 190 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
112} 191}
113 192
114static void 193static aio_req SvAIO_REQ (SV *sv)
115end_thread (void)
116{ 194{
117 aio_req req; 195 MAGIC *mg;
118 New (0, req, 1, aio_cb);
119 req->type = REQ_QUIT;
120 196
121 send_req (req); 197 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
122} 198 croak ("object of class " AIO_REQ_KLASS " expected");
123 199
124static void 200 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
125read_write (pTHX_
126 int dowrite, int fd, off_t offset, size_t length,
127 SV *data, STRLEN dataoffset, SV *callback)
128{
129 aio_req req;
130 STRLEN svlen;
131 char *svptr = SvPV (data, svlen);
132 201
133 SvUPGRADE (data, SVt_PV); 202 return mg ? (aio_req)mg->mg_ptr : 0;
134 SvPOK_on (data); 203}
135 204
136 if (dataoffset < 0) 205static void aio_grp_feed (aio_req grp)
137 dataoffset += svlen; 206{
138 207 if (grp->sv2 && SvOK (grp->sv2))
139 if (dataoffset < 0 || dataoffset > svlen)
140 croak ("data offset outside of string");
141
142 if (dowrite)
143 { 208 {
144 /* write: check length and adjust. */ 209 dSP;
145 if (length < 0 || length + dataoffset > svlen) 210
146 length = svlen - dataoffset; 211 ENTER;
212 SAVETMPS;
213 PUSHMARK (SP);
214 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
215 PUTBACK;
216 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
217 SPAGAIN;
218 FREETMPS;
219 LEAVE;
147 } 220 }
148 else 221}
222
223static void req_submit (eio_req *req)
224{
225 eio_submit (req);
226
227 if (expect_false (on_next_submit))
149 { 228 {
150 /* read: grow scalar as necessary */ 229 dSP;
151 svptr = SvGROW (data, length + dataoffset); 230 SV *cb = sv_2mortal (on_next_submit);
231
232 on_next_submit = 0;
233
234 PUSHMARK (SP);
235 PUTBACK;
236 call_sv (cb, G_DISCARD | G_EVAL);
152 } 237 }
153
154 if (length < 0)
155 croak ("length must not be negative");
156
157 Newz (0, req, 1, aio_cb);
158
159 if (!req)
160 croak ("out of memory during aio_req allocation");
161
162 req->type = dowrite ? REQ_WRITE : REQ_READ;
163 req->fd = fd;
164 req->offset = offset;
165 req->length = length;
166 req->data = SvREFCNT_inc (data);
167 req->dataptr = (char *)svptr + dataoffset;
168 req->callback = SvREFCNT_inc (callback);
169
170 send_req (req);
171} 238}
172 239
173static void 240static int req_invoke (eio_req *req)
174poll_wait ()
175{
176 fd_set rfd;
177 FD_ZERO(&rfd);
178 FD_SET(respipe[0], &rfd);
179
180 select (respipe[0] + 1, &rfd, 0, 0, 0);
181}
182
183static int
184poll_cb (pTHX)
185{ 241{
186 dSP; 242 dSP;
187 int count = 0;
188 aio_req req;
189 243
190 while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 244 if (req->flags & FLAG_SV2_RO_OFF)
245 SvREADONLY_off (req->sv2);
246
247 if (!EIO_CANCELLED (req) && req->callback)
191 { 248 {
192 nreqs--; 249 ENTER;
250 SAVETMPS;
251 PUSHMARK (SP);
252 EXTEND (SP, 1);
193 253
194 if (req->type == REQ_QUIT) 254 switch (req->type)
195 started--;
196 else
197 { 255 {
198 int errorno = errno; 256 case EIO_READDIR:
199 errno = req->errorno;
200
201 if (req->type == REQ_READ)
202 SvCUR_set (req->data, req->dataoffset
203 + req->result > 0 ? req->result : 0);
204
205 if (req->data)
206 SvREFCNT_dec (req->data);
207
208 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
209 { 257 {
210 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 258 SV *rv = &PL_sv_undef;
211 PL_laststatval = req->result;
212 PL_statcache = *(req->statdata);
213 259
214 Safefree (req->statdata); 260 if (req->result >= 0)
261 {
262 int i;
263 char *names = (char *)req->ptr2;
264 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
265 AV *av = newAV ();
266
267 av_extend (av, req->result - 1);
268
269 for (i = 0; i < req->result; ++i)
270 {
271 if (req->int1 & EIO_READDIR_DENTS)
272 {
273 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
274
275 if (req->int1 & EIO_READDIR_CUSTOM2)
276 {
277 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
278 AV *avent = newAV ();
279
280 av_extend (avent, 2);
281
282 if (!sv_type [ent->type])
283 {
284 sv_type [ent->type] = newSViv (ent->type);
285 SvREADONLY_on (sv_type [ent->type]);
286 }
287
288 av_store (avent, 0, namesv);
289 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
290 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
291
292 av_store (av, i, newRV_noinc ((SV *)avent));
293 }
294 else
295 av_store (av, i, namesv);
296
297 ++ent;
298 }
299 else
300 {
301 SV *name = newSVpv (names, 0);
302 av_store (av, i, name);
303 names += SvCUR (name) + 1;
304 }
305 }
306
307 rv = sv_2mortal (newRV_noinc ((SV *)av));
308 }
309
310 PUSHs (rv);
311
312 if (req->int1 & EIO_READDIR_CUSTOM1)
313 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
215 } 314 }
315 break;
216 316
217 PUSHMARK (SP); 317 case EIO_OPEN:
218 XPUSHs (sv_2mortal (newSViv (req->result)));
219
220 if (req->type == REQ_OPEN)
221 { 318 {
222 /* convert fd to fh */ 319 /* convert fd to fh */
223 SV *fh; 320 SV *fh = &PL_sv_undef;
224 321
225 PUTBACK; 322 if (req->result >= 0)
226 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 323 {
227 SPAGAIN; 324 GV *gv = (GV *)sv_newmortal ();
325 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
326 char sym [64];
327 int symlen;
328
329 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
330 gv_init (gv, stash, sym, symlen, 0);
228 331
229 fh = POPs; 332 symlen = snprintf (
333 sym,
334 sizeof (sym),
335 "%s&=%d",
336 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
337 (int)req->result
338 );
230 339
231 PUSHMARK (SP); 340 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
341 fh = (SV *)gv;
342 }
343
232 XPUSHs (fh); 344 PUSHs (fh);
233 } 345 }
346 break;
234 347
235 PUTBACK; 348 case EIO_GROUP:
236 call_sv (req->callback, G_VOID | G_EVAL); 349 req->int1 = 2; /* mark group as finished */
237 SPAGAIN; 350
351 if (req->sv1)
352 {
353 int i;
354 AV *av = (AV *)req->sv1;
355
356 EXTEND (SP, AvFILL (av) + 1);
357 for (i = 0; i <= AvFILL (av); ++i)
358 PUSHs (*av_fetch (av, i, 0));
359 }
360 break;
361
362 case EIO_NOP:
363 case EIO_BUSY:
364 break;
365
366 case EIO_READLINK:
367 if (req->result > 0)
368 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
369 break;
370
371 case EIO_STAT:
372 case EIO_LSTAT:
373 case EIO_FSTAT:
374 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
375 PL_laststatval = req->result;
376 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
377 PUSHs (sv_2mortal (newSViv (req->result)));
378 break;
379
380 case EIO_READ:
238 381 {
239 if (req->callback) 382 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
240 SvREFCNT_dec (req->callback); 383 *SvEND (req->sv2) = 0;
241 384 SvPOK_only (req->sv2);
242 errno = errorno; 385 SvSETMAGIC (req->sv2);
243 count++; 386 PUSHs (sv_2mortal (newSViv (req->result)));
244 } 387 }
388 break;
245 389
246 Safefree (req);
247 }
248
249 if (qs)
250 send_reqs ();
251
252 return count;
253}
254
255static void *
256aio_proc (void *thr_arg)
257{
258 aio_req req;
259
260 /* then loop */
261 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
262 {
263 errno = 0; /* strictly unnecessary */
264
265 switch (req->type)
266 {
267 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;
268 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;
269#if SYS_readahead
270 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
271#else
272 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
273#endif
274
275 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
276 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
277 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
278
279 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
280 case REQ_CLOSE: req->result = close (req->fd); break;
281 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
282
283 case REQ_FSYNC: req->result = fsync (req->fd); break;
284 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
285
286 case REQ_QUIT: 390 case EIO_DUP2:
287 write (respipe[1], (void *)&req, sizeof (req)); 391 if (req->result > 0)
288 return 0; 392 req->result = 0;
393 /* FALLTHROUGH */
289 394
290 default: 395 default:
291 req->result = ENOSYS; 396 PUSHs (sv_2mortal (newSViv (req->result)));
292 break; 397 break;
293 } 398 }
294 399
295 req->errorno = errno; 400 errno = req->errorno;
296 write (respipe[1], (void *)&req, sizeof (req)); 401
402 PUTBACK;
403 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
404 SPAGAIN;
405
406 FREETMPS;
407 LEAVE;
408
409 PUTBACK;
297 } 410 }
298 411
412 return !!SvTRUE (ERRSV);
413}
414
415static void req_destroy (aio_req req)
416{
417 if (req->self)
418 {
419 sv_unmagic (req->self, PERL_MAGIC_ext);
420 SvREFCNT_dec (req->self);
421 }
422
423 SvREFCNT_dec (req->sv1);
424 SvREFCNT_dec (req->sv2);
425 SvREFCNT_dec (req->callback);
426
427 Safefree (req);
428}
429
430static void req_cancel_subs (aio_req grp)
431{
432 aio_req sub;
433
434 if (grp->type != EIO_GROUP)
435 return;
436
437 SvREFCNT_dec (grp->sv2);
438 grp->sv2 = 0;
439
440 eio_grp_cancel (grp);
441}
442
443#ifdef USE_SOCKETS_AS_HANDLES
444# define TO_SOCKET(x) (win32_get_osfhandle (x))
445#else
446# define TO_SOCKET(x) (x)
447#endif
448
449static void
450create_respipe (void)
451{
452 int old_readfd = respipe [0];
453
454 if (respipe [1] >= 0)
455 respipe_close (TO_SOCKET (respipe [1]));
456
457#ifdef _WIN32
458 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
459#else
460 if (pipe (respipe))
461#endif
462 croak ("unable to initialize result pipe");
463
464 if (old_readfd >= 0)
465 {
466 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
467 croak ("unable to initialize result pipe(2)");
468
469 respipe_close (respipe [0]);
470 respipe [0] = old_readfd;
471 }
472
473#ifdef _WIN32
474 int arg = 1;
475 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
476 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
477#else
478 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
479 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
480#endif
481 croak ("unable to initialize result pipe(3)");
482
483 respipe_osf [0] = TO_SOCKET (respipe [0]);
484 respipe_osf [1] = TO_SOCKET (respipe [1]);
485}
486
487static void poll_wait (void)
488{
489 fd_set rfd;
490
491 while (eio_nreqs ())
492 {
493 int size;
494
495 X_LOCK (reslock);
496 size = res_queue.size;
497 X_UNLOCK (reslock);
498
499 if (size)
500 return;
501
502 etp_maybe_start_thread ();
503
504 FD_ZERO (&rfd);
505 FD_SET (respipe [0], &rfd);
506
507 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
508 }
509}
510
511static int poll_cb (void)
512{
513 for (;;)
514 {
515 int res = eio_poll ();
516
517 if (res > 0)
518 croak (0);
519
520 if (!max_outstanding || max_outstanding > eio_nreqs ())
521 return res;
522
523 poll_wait ();
524 }
525}
526
527static void atfork_child (void)
528{
529 create_respipe ();
530}
531
532static SV *
533get_cb (SV *cb_sv)
534{
535 HV *st;
536 GV *gvp;
537 CV *cv;
538
539 if (!SvOK (cb_sv))
299 return 0; 540 return 0;
541
542 cv = sv_2cv (cb_sv, &st, &gvp, 0);
543
544 if (!cv)
545 croak ("IO::AIO callback must be undef or a CODE reference");
546
547 return (SV *)cv;
548}
549
550#define dREQ \
551 SV *cb_cv; \
552 aio_req req; \
553 int req_pri = next_pri; \
554 next_pri = EIO_PRI_DEFAULT; \
555 \
556 cb_cv = get_cb (callback); \
557 \
558 Newz (0, req, 1, eio_req); \
559 if (!req) \
560 croak ("out of memory during eio_req allocation"); \
561 \
562 req->callback = SvREFCNT_inc (cb_cv); \
563 req->pri = req_pri
564
565#define REQ_SEND \
566 PUTBACK; \
567 req_submit (req); \
568 SPAGAIN; \
569 \
570 if (GIMME_V != G_VOID) \
571 XPUSHs (req_sv (req, AIO_REQ_KLASS));
572
573static int
574extract_fd (SV *fh, int wr)
575{
576 int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
577
578 if (fd < 0)
579 croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
580
581 return fd;
300} 582}
301 583
302MODULE = IO::AIO PACKAGE = IO::AIO 584MODULE = IO::AIO PACKAGE = IO::AIO
303 585
586PROTOTYPES: ENABLE
587
304BOOT: 588BOOT:
305{ 589{
306 if (pipe (reqpipe) || pipe (respipe)) 590 static const struct {
307 croak ("unable to initialize request or result pipe"); 591 const char *name;
592 IV iv;
593 } *civ, const_iv[] = {
594# define const_iv(name, value) { # name, (IV) value },
595# define const_eio(name) { # name, (IV) EIO_ ## name },
596 const_iv (EXDEV , EXDEV)
597 const_iv (ENOSYS , ENOSYS)
598 const_iv (O_RDONLY, O_RDONLY)
599 const_iv (O_WRONLY, O_WRONLY)
600 const_iv (O_CREAT , O_CREAT)
601 const_iv (O_TRUNC , O_TRUNC)
602#ifndef _WIN32
603 const_iv (S_IFIFO , S_IFIFO)
604#endif
605 const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
606 const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
607 const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
608 const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
609 const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
610 const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
308 611
309 if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) 612 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
310 croak ("cannot set result pipe to nonblocking mode"); 613 const_eio (SYNC_FILE_RANGE_WRITE)
614 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
311 615
312 if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) 616 const_eio (READDIR_DENTS)
313 croak ("cannot set result pipe to nonblocking mode"); 617 const_eio (READDIR_DIRS_FIRST)
314} 618 const_eio (READDIR_STAT_ORDER)
619 const_eio (READDIR_FOUND_UNKNOWN)
315 620
621 const_eio (DT_UNKNOWN)
622 const_eio (DT_FIFO)
623 const_eio (DT_CHR)
624 const_eio (DT_DIR)
625 const_eio (DT_BLK)
626 const_eio (DT_REG)
627 const_eio (DT_LNK)
628 const_eio (DT_SOCK)
629 const_eio (DT_WHT)
630 };
631
632 stash = gv_stashpv ("IO::AIO", 1);
633
634 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
635 newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
636
637 create_respipe ();
638
639 if (eio_init (want_poll, done_poll) < 0)
640 croak ("IO::AIO: unable to initialise eio library");
641
642 /* atfork child called in fifo order, so before eio's handler */
643 X_THREAD_ATFORK (0, 0, atfork_child);
644}
645
316void 646void
317min_parallel(nthreads) 647max_poll_reqs (int nreqs)
318 int nthreads
319 PROTOTYPE: $ 648 PROTOTYPE: $
320 CODE: 649 CODE:
321 while (nthreads > started) 650 eio_set_max_poll_reqs (nreqs);
322 start_thread ();
323 651
324void 652void
325max_parallel(nthreads) 653max_poll_time (double nseconds)
326 int nthreads
327 PROTOTYPE: $ 654 PROTOTYPE: $
328 CODE: 655 CODE:
656 eio_set_max_poll_time (nseconds);
657
658void
659min_parallel (int nthreads)
660 PROTOTYPE: $
661 CODE:
662 eio_set_min_parallel (nthreads);
663
664void
665max_parallel (int nthreads)
666 PROTOTYPE: $
667 CODE:
668 eio_set_max_parallel (nthreads);
669
670void
671max_idle (int nthreads)
672 PROTOTYPE: $
673 CODE:
674 eio_set_max_idle (nthreads);
675
676void
677max_outstanding (int maxreqs)
678 PROTOTYPE: $
679 CODE:
680 max_outstanding = maxreqs;
681
682void
683aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
684 PROTOTYPE: $$$;$
685 PPCODE:
329{ 686{
330 int cur = started; 687 dREQ;
331 while (cur > nthreads) 688
332 { 689 req->type = EIO_OPEN;
333 end_thread (); 690 req->sv1 = newSVsv (pathname);
691 req->ptr1 = SvPVbyte_nolen (req->sv1);
692 req->int1 = flags;
693 req->int2 = mode;
694
695 REQ_SEND;
696}
697
698void
699aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
700 PROTOTYPE: $;$
701 ALIAS:
702 aio_fsync = EIO_FSYNC
703 aio_fdatasync = EIO_FDATASYNC
704 PPCODE:
705{
706 int fd = extract_fd (fh, 0);
707 dREQ;
708
709 req->type = ix;
710 req->sv1 = newSVsv (fh);
711 req->int1 = fd;
712
713 REQ_SEND (req);
714}
715
716void
717aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
718 PROTOTYPE: $$$$;$
719 PPCODE:
720{
721 int fd = extract_fd (fh, 0);
722 dREQ;
723
724 req->type = EIO_SYNC_FILE_RANGE;
725 req->sv1 = newSVsv (fh);
726 req->int1 = fd;
727 req->offs = offset;
728 req->size = nbytes;
729 req->int2 = flags;
730
731 REQ_SEND (req);
732}
733
734void
735aio_close (SV *fh, SV *callback=&PL_sv_undef)
736 PROTOTYPE: $;$
737 PPCODE:
738{
739 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
740 int fd = extract_fd (fh, 0);
741 dREQ;
742
743 if (close_pipe < 0)
744 {
745 int pipefd [2];
746
747 if (pipe (pipefd) < 0
748 || close (pipefd [1]) < 0
749 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
750 abort (); /*D*/
751
752 close_pipe = pipefd [0];
753 }
754
755 req->type = EIO_DUP2;
756 req->int1 = close_pipe;
757 req->sv2 = newSVsv (fh);
758 req->int2 = fd;
759
760 REQ_SEND (req);
761}
762
763void
764aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
765 ALIAS:
766 aio_read = EIO_READ
767 aio_write = EIO_WRITE
768 PROTOTYPE: $$$$$;$
769 PPCODE:
770{
771 STRLEN svlen;
772 int fd = extract_fd (fh, ix == EIO_WRITE);
773 char *svptr = SvPVbyte (data, svlen);
774 UV len = SvUV (length);
775
776 if (dataoffset < 0)
777 dataoffset += svlen;
778
779 if (dataoffset < 0 || dataoffset > svlen)
780 croak ("dataoffset outside of data scalar");
781
782 if (ix == EIO_WRITE)
783 {
784 /* write: check length and adjust. */
785 if (!SvOK (length) || len + dataoffset > svlen)
786 len = svlen - dataoffset;
787 }
788 else
789 {
790 /* read: check type and grow scalar as necessary */
791 SvUPGRADE (data, SVt_PV);
792 svptr = SvGROW (data, len + dataoffset + 1);
793 }
794
795 {
796 dREQ;
797
798 req->type = ix;
799 req->sv1 = newSVsv (fh);
800 req->int1 = fd;
801 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
802 req->size = len;
803 req->sv2 = SvREFCNT_inc (data);
804 req->ptr2 = (char *)svptr + dataoffset;
805 req->stroffset = dataoffset;
806
807 if (!SvREADONLY (data))
334 cur--; 808 {
809 SvREADONLY_on (data);
810 req->flags |= FLAG_SV2_RO_OFF;
335 } 811 }
336 812
337 while (started > nthreads) 813 REQ_SEND;
814 }
815}
816
817void
818aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
819 PROTOTYPE: $$;$
820 PPCODE:
821{
822 SV *data;
823 dREQ;
824
825 req->type = EIO_READLINK;
826 req->sv1 = newSVsv (path);
827 req->ptr1 = SvPVbyte_nolen (req->sv1);
828
829 REQ_SEND;
830}
831
832void
833aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
834 PROTOTYPE: $$$$;$
835 PPCODE:
836{
837 int ifd = extract_fd (in_fh , 0);
838 int ofd = extract_fd (out_fh, 0);
839 dREQ;
840
841 req->type = EIO_SENDFILE;
842 req->sv1 = newSVsv (out_fh);
843 req->int1 = ofd;
844 req->sv2 = newSVsv (in_fh);
845 req->int2 = ifd;
846 req->offs = in_offset;
847 req->size = length;
848
849 REQ_SEND;
850}
851
852void
853aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
854 PROTOTYPE: $$$;$
855 PPCODE:
856{
857 int fd = extract_fd (fh, 0);
858 dREQ;
859
860 req->type = EIO_READAHEAD;
861 req->sv1 = newSVsv (fh);
862 req->int1 = fd;
863 req->offs = offset;
864 req->size = length;
865
866 REQ_SEND;
867}
868
869void
870aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
871 ALIAS:
872 aio_stat = EIO_STAT
873 aio_lstat = EIO_LSTAT
874 PPCODE:
875{
876 dREQ;
877
878 req->sv1 = newSVsv (fh_or_path);
879
880 if (SvPOK (req->sv1))
881 {
882 req->type = ix;
883 req->ptr1 = SvPVbyte_nolen (req->sv1);
884 }
885 else
886 {
887 req->type = EIO_FSTAT;
888 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
889 }
890
891 REQ_SEND;
892}
893
894void
895aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
896 PPCODE:
897{
898 dREQ;
899
900 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
901 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
902 req->sv1 = newSVsv (fh_or_path);
903
904 if (SvPOK (req->sv1))
905 {
906 req->type = EIO_UTIME;
907 req->ptr1 = SvPVbyte_nolen (req->sv1);
908 }
909 else
910 {
911 req->type = EIO_FUTIME;
912 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
913 }
914
915 REQ_SEND;
916}
917
918void
919aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
920 PPCODE:
921{
922 dREQ;
923
924 req->sv1 = newSVsv (fh_or_path);
925 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
926
927 if (SvPOK (req->sv1))
928 {
929 req->type = EIO_TRUNCATE;
930 req->ptr1 = SvPVbyte_nolen (req->sv1);
931 }
932 else
933 {
934 req->type = EIO_FTRUNCATE;
935 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
936 }
937
938 REQ_SEND;
939}
940
941void
942aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
943 ALIAS:
944 aio_chmod = EIO_CHMOD
945 aio_mkdir = EIO_MKDIR
946 PPCODE:
947{
948 dREQ;
949
950 req->int2 = mode;
951 req->sv1 = newSVsv (fh_or_path);
952
953 if (SvPOK (req->sv1))
954 {
955 req->type = ix;
956 req->ptr1 = SvPVbyte_nolen (req->sv1);
957 }
958 else
959 {
960 req->type = EIO_FCHMOD;
961 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
962 }
963
964 REQ_SEND;
965}
966
967void
968aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
969 PPCODE:
970{
971 dREQ;
972
973 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
974 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
975 req->sv1 = newSVsv (fh_or_path);
976
977 if (SvPOK (req->sv1))
978 {
979 req->type = EIO_CHOWN;
980 req->ptr1 = SvPVbyte_nolen (req->sv1);
981 }
982 else
983 {
984 req->type = EIO_FCHOWN;
985 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
986 }
987
988 REQ_SEND;
989}
990
991void
992aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
993 PPCODE:
994{
995 dREQ;
996
997 req->type = EIO_READDIR;
998 req->sv1 = newSVsv (pathname);
999 req->ptr1 = SvPVbyte_nolen (req->sv1);
1000 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1001
1002 if (flags & EIO_READDIR_DENTS)
1003 req->int1 |= EIO_READDIR_CUSTOM2;
1004
1005 REQ_SEND;
1006}
1007
1008void
1009aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1010 ALIAS:
1011 aio_unlink = EIO_UNLINK
1012 aio_rmdir = EIO_RMDIR
1013 aio_readdir = EIO_READDIR
1014 PPCODE:
1015{
1016 dREQ;
1017
1018 req->type = ix;
1019 req->sv1 = newSVsv (pathname);
1020 req->ptr1 = SvPVbyte_nolen (req->sv1);
1021
1022 REQ_SEND;
1023}
1024
1025void
1026aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1027 ALIAS:
1028 aio_link = EIO_LINK
1029 aio_symlink = EIO_SYMLINK
1030 aio_rename = EIO_RENAME
1031 PPCODE:
1032{
1033 dREQ;
1034
1035 req->type = ix;
1036 req->sv1 = newSVsv (oldpath);
1037 req->ptr1 = SvPVbyte_nolen (req->sv1);
1038 req->sv2 = newSVsv (newpath);
1039 req->ptr2 = SvPVbyte_nolen (req->sv2);
1040
1041 REQ_SEND;
1042}
1043
1044void
1045aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1046 PPCODE:
1047{
1048 dREQ;
1049
1050 req->type = EIO_MKNOD;
1051 req->sv1 = newSVsv (pathname);
1052 req->ptr1 = SvPVbyte_nolen (req->sv1);
1053 req->int2 = (mode_t)mode;
1054 req->offs = dev;
1055
1056 REQ_SEND;
1057}
1058
1059void
1060aio_busy (double delay, SV *callback=&PL_sv_undef)
1061 PPCODE:
1062{
1063 dREQ;
1064
1065 req->type = EIO_BUSY;
1066 req->nv1 = delay < 0. ? 0. : delay;
1067
1068 REQ_SEND;
1069}
1070
1071void
1072aio_group (SV *callback=&PL_sv_undef)
1073 PROTOTYPE: ;$
1074 PPCODE:
1075{
1076 dREQ;
1077
1078 req->type = EIO_GROUP;
1079
1080 req_submit (req);
1081 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1082}
1083
1084void
1085aio_nop (SV *callback=&PL_sv_undef)
1086 ALIAS:
1087 aio_nop = EIO_NOP
1088 aio_sync = EIO_SYNC
1089 PPCODE:
1090{
1091 dREQ;
1092
1093 req->type = ix;
1094
1095 REQ_SEND;
1096}
1097
1098int
1099aioreq_pri (int pri = 0)
1100 PROTOTYPE: ;$
1101 CODE:
1102 RETVAL = next_pri;
1103 if (items > 0)
1104 {
1105 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1106 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1107 next_pri = pri;
1108 }
1109 OUTPUT:
1110 RETVAL
1111
1112void
1113aioreq_nice (int nice = 0)
1114 CODE:
1115 nice = next_pri - nice;
1116 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1117 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1118 next_pri = nice;
1119
1120void
1121flush ()
1122 PROTOTYPE:
1123 CODE:
1124 while (eio_nreqs ())
338 { 1125 {
339 poll_wait (); 1126 poll_wait ();
340 poll_cb (aTHX); 1127 poll_cb ();
341 }
342}
343
344void
345aio_open(pathname,flags,mode,callback)
346 SV * pathname
347 int flags
348 int mode
349 SV * callback
350 PROTOTYPE: $$$$
351 CODE:
352{
353 aio_req req;
354
355 Newz (0, req, 1, aio_cb);
356
357 if (!req)
358 croak ("out of memory during aio_req allocation");
359
360 req->type = REQ_OPEN;
361 req->data = newSVsv (pathname);
362 req->dataptr = SvPV_nolen (req->data);
363 req->fd = flags;
364 req->mode = mode;
365 req->callback = SvREFCNT_inc (callback);
366
367 send_req (req);
368}
369
370void
371aio_close(fh,callback)
372 InputStream fh
373 SV * callback
374 PROTOTYPE: $$
375 ALIAS:
376 aio_close = REQ_CLOSE
377 aio_fsync = REQ_FSYNC
378 aio_fdatasync = REQ_FDATASYNC
379 CODE:
380{
381 aio_req req;
382
383 Newz (0, req, 1, aio_cb);
384
385 if (!req)
386 croak ("out of memory during aio_req allocation");
387
388 req->type = ix;
389 req->fd = PerlIO_fileno (fh);
390 req->callback = SvREFCNT_inc (callback);
391
392 send_req (req);
393}
394
395void
396aio_read(fh,offset,length,data,dataoffset,callback)
397 InputStream fh
398 UV offset
399 IV length
400 SV * data
401 IV dataoffset
402 SV * callback
403 PROTOTYPE: $$$$$$
404 CODE:
405 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
406
407void
408aio_write(fh,offset,length,data,dataoffset,callback)
409 OutputStream fh
410 UV offset
411 IV length
412 SV * data
413 IV dataoffset
414 SV * callback
415 PROTOTYPE: $$$$$$
416 CODE:
417 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
418
419void
420aio_readahead(fh,offset,length,callback)
421 InputStream fh
422 UV offset
423 IV length
424 SV * callback
425 PROTOTYPE: $$$$
426 CODE:
427{
428 aio_req req;
429
430 if (length < 0)
431 croak ("length must not be negative");
432
433 Newz (0, req, 1, aio_cb);
434
435 if (!req)
436 croak ("out of memory during aio_req allocation");
437
438 req->type = REQ_READAHEAD;
439 req->fd = PerlIO_fileno (fh);
440 req->offset = offset;
441 req->length = length;
442 req->callback = SvREFCNT_inc (callback);
443
444 send_req (req);
445}
446
447void
448aio_stat(fh_or_path,callback)
449 SV * fh_or_path
450 SV * callback
451 PROTOTYPE: $$
452 ALIAS:
453 aio_lstat = 1
454 CODE:
455{
456 aio_req req;
457
458 Newz (0, req, 1, aio_cb);
459
460 if (!req)
461 croak ("out of memory during aio_req allocation");
462
463 New (0, req->statdata, 1, Stat_t);
464
465 if (!req->statdata)
466 croak ("out of memory during aio_req->statdata allocation");
467
468 if (SvPOK (fh_or_path))
469 { 1128 }
470 req->type = ix ? REQ_LSTAT : REQ_STAT;
471 req->data = newSVsv (fh_or_path);
472 req->dataptr = SvPV_nolen (req->data);
473 }
474 else
475 {
476 req->type = REQ_FSTAT;
477 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
478 }
479 1129
480 req->callback = SvREFCNT_inc (callback); 1130int
481 1131poll()
482 send_req (req);
483}
484
485void
486aio_unlink(pathname,callback)
487 SV * pathname
488 SV * callback
489 PROTOTYPE: $$ 1132 PROTOTYPE:
490 CODE: 1133 CODE:
491{ 1134 poll_wait ();
492 aio_req req; 1135 RETVAL = poll_cb ();
493 1136 OUTPUT:
494 Newz (0, req, 1, aio_cb); 1137 RETVAL
495
496 if (!req)
497 croak ("out of memory during aio_req allocation");
498
499 req->type = REQ_UNLINK;
500 req->data = newSVsv (pathname);
501 req->dataptr = SvPV_nolen (req->data);
502 req->callback = SvREFCNT_inc (callback);
503
504 send_req (req);
505}
506 1138
507int 1139int
508poll_fileno() 1140poll_fileno()
509 PROTOTYPE: 1141 PROTOTYPE:
510 CODE: 1142 CODE:
511 RETVAL = respipe[0]; 1143 RETVAL = respipe [0];
512 OUTPUT: 1144 OUTPUT:
513 RETVAL 1145 RETVAL
514 1146
515int 1147int
516poll_cb(...) 1148poll_cb(...)
517 PROTOTYPE: 1149 PROTOTYPE:
518 CODE: 1150 CODE:
519 RETVAL = poll_cb (aTHX); 1151 RETVAL = poll_cb ();
520 OUTPUT: 1152 OUTPUT:
521 RETVAL 1153 RETVAL
522 1154
523void 1155void
524poll_wait() 1156poll_wait()
… …
528 1160
529int 1161int
530nreqs() 1162nreqs()
531 PROTOTYPE: 1163 PROTOTYPE:
532 CODE: 1164 CODE:
533 RETVAL = nreqs; 1165 RETVAL = eio_nreqs ();
534 OUTPUT: 1166 OUTPUT:
535 RETVAL 1167 RETVAL
536 1168
1169int
1170nready()
1171 PROTOTYPE:
1172 CODE:
1173 RETVAL = eio_nready ();
1174 OUTPUT:
1175 RETVAL
1176
1177int
1178npending()
1179 PROTOTYPE:
1180 CODE:
1181 RETVAL = eio_npending ();
1182 OUTPUT:
1183 RETVAL
1184
1185int
1186nthreads()
1187 PROTOTYPE:
1188 CODE:
1189 RETVAL = eio_nthreads ();
1190 OUTPUT:
1191 RETVAL
1192
1193int
1194fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1195 PROTOTYPE: $$$$
1196 CODE:
1197{
1198 #if _XOPEN_SOURCE >= 600
1199 RETVAL = posix_fadvise (fh, offset, length, advice);
1200 #else
1201 RETVAL = errno = ENOSYS;
1202 #endif
1203}
1204 OUTPUT:
1205 RETVAL
1206
1207ssize_t
1208sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1209 PROTOTYPE: $$$$
1210 CODE:
1211 eio_sendfile_sync (ofh, ifh, offset, count);
1212
1213void _on_next_submit (SV *cb)
1214 CODE:
1215 SvREFCNT_dec (on_next_submit);
1216 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1217
1218PROTOTYPES: DISABLE
1219
1220MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1221
1222void
1223cancel (aio_req_ornot req)
1224 CODE:
1225 eio_cancel (req);
1226
1227void
1228cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1229 PPCODE:
1230{
1231 if (GIMME_V != G_VOID)
1232 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1233
1234 if (items > 1)
1235 {
1236 SV *cb_cv = get_cb (callback);
1237
1238 SvREFCNT_dec (req->callback);
1239 req->callback = SvREFCNT_inc (cb_cv);
1240 }
1241}
1242
1243MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1244
1245void
1246add (aio_req grp, ...)
1247 PPCODE:
1248{
1249 int i;
1250
1251 if (grp->int1 == 2)
1252 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1253
1254 for (i = 1; i < items; ++i )
1255 {
1256 aio_req req;
1257
1258 if (GIMME_V != G_VOID)
1259 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1260
1261 req = SvAIO_REQ (ST (i));
1262
1263 if (req)
1264 eio_grp_add (grp, req);
1265 }
1266}
1267
1268void
1269cancel_subs (aio_req_ornot req)
1270 CODE:
1271 req_cancel_subs (req);
1272
1273void
1274result (aio_req grp, ...)
1275 CODE:
1276{
1277 int i;
1278 AV *av;
1279
1280 grp->errorno = errno;
1281
1282 av = newAV ();
1283 av_extend (av, items - 1);
1284
1285 for (i = 1; i < items; ++i )
1286 av_push (av, newSVsv (ST (i)));
1287
1288 SvREFCNT_dec (grp->sv1);
1289 grp->sv1 = (SV *)av;
1290}
1291
1292void
1293errno (aio_req grp, int errorno = errno)
1294 CODE:
1295 grp->errorno = errorno;
1296
1297void
1298limit (aio_req grp, int limit)
1299 CODE:
1300 eio_grp_limit (grp, limit);
1301
1302void
1303feed (aio_req grp, SV *callback=&PL_sv_undef)
1304 CODE:
1305{
1306 SvREFCNT_dec (grp->sv2);
1307 grp->sv2 = newSVsv (callback);
1308 grp->feed = aio_grp_feed;
1309
1310 if (grp->int2 <= 0)
1311 grp->int2 = 2;
1312
1313 eio_grp_limit (grp, grp->int2);
1314}
1315

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