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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.1 by root, Sun Jul 10 17:07:44 2005 UTC vs.
Revision 1.149 by root, Tue Jun 30 07:33:58 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# define NO_FADVISE 1
123#endif
124
125#ifndef POSIX_FADV_SEQUENTIAL
126# define POSIX_FADV_SEQUENTIAL 0
127#endif
128
129#ifndef POSIX_FADV_RANDOM
130# define POSIX_FADV_RANDOM 0
131#endif
132
133#ifndef POSIX_FADV_NOREUSE
134# define POSIX_FADV_NOREUSE 0
135#endif
136
137#ifndef POSIX_FADV_WILLNEED
138# define POSIX_FADV_WILLNEED 0
139#endif
140
141#ifndef POSIX_FADV_DONTNEED
142# define POSIX_FADV_DONTNEED 0
143#endif
144
145static int req_invoke (eio_req *req);
146#define EIO_FINISH(req) req_invoke (req)
147static void req_destroy (eio_req *grp);
148#define EIO_DESTROY(req) req_destroy (req)
149
30enum { 150enum {
31 REQ_QUIT, 151 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}; 152};
37 153
38typedef struct aio_cb { 154#include "libeio/eio.c"
39 struct aio_cb *next;
40 155
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; 156typedef eio_req *aio_req;
157typedef eio_req *aio_req_ornot;
57 158
58static int started; 159static SV *on_next_submit;
59static int nreqs; 160static int next_pri = EIO_PRI_DEFAULT;
60static int reqpipe[2], respipe[2]; 161static int max_outstanding;
61 162
62static aio_req qs, qe; /* queue start, queue end */ 163static int respipe_osf [2], respipe [2] = { -1, -1 };
63 164
64static void *aio_proc(void *arg); 165static void req_destroy (aio_req req);
166static void req_cancel (aio_req req);
65 167
66static void 168static void want_poll (void)
67start_thread (void)
68{ 169{
69 sigset_t fullsigset, oldsigset; 170 /* write a dummy byte to the pipe so fh becomes ready */
70 pthread_t tid; 171 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} 172}
85 173
86static void 174static void done_poll (void)
87send_reqs (void)
88{ 175{
89 /* this write is atomic */ 176 /* read any signals sent by the worker threads */
90 while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs) 177 char buf [4];
91 { 178 while (respipe_read (respipe [0], buf, 4) == 4)
92 qs = qs->next; 179 ;
93 if (!qs) qe = 0;
94 }
95} 180}
96 181
97static void 182/* must be called at most once */
98send_req (aio_req req) 183static SV *req_sv (aio_req req, const char *klass)
99{ 184{
100 nreqs++; 185 if (!req->self)
101 req->next = 0;
102
103 if (qe)
104 { 186 {
105 qe->next = req; 187 req->self = (SV *)newHV ();
106 qe = req; 188 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
107 } 189 }
108 else
109 qe = qs = req;
110 190
111 send_reqs (); 191 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
112} 192}
113 193
114static void 194static aio_req SvAIO_REQ (SV *sv)
115end_thread (void)
116{ 195{
117 aio_req req; 196 MAGIC *mg;
118 New (0, req, 1, aio_cb);
119 req->type = REQ_QUIT;
120 197
121 send_req (req); 198 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
122} 199 croak ("object of class " AIO_REQ_KLASS " expected");
123 200
124static void 201 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);
132 202
133 SvUPGRADE (data, SVt_PV); 203 return mg ? (aio_req)mg->mg_ptr : 0;
134 SvPOK_on (data); 204}
135 205
136 if (dataoffset < 0) 206static void aio_grp_feed (aio_req grp)
137 dataoffset += svlen; 207{
138 208 if (grp->sv2 && SvOK (grp->sv2))
139 if (dataoffset < 0 || dataoffset > svlen)
140 croak ("data offset outside of string");
141
142 if (dowrite)
143 { 209 {
144 /* write: check length and adjust. */ 210 dSP;
145 if (length < 0 || length + dataoffset > svlen) 211
146 length = svlen - dataoffset; 212 ENTER;
213 SAVETMPS;
214 PUSHMARK (SP);
215 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
216 PUTBACK;
217 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
218 SPAGAIN;
219 FREETMPS;
220 LEAVE;
147 } 221 }
148 else 222}
223
224static void req_submit (eio_req *req)
225{
226 eio_submit (req);
227
228 if (expect_false (on_next_submit))
149 { 229 {
150 /* read: grow scalar as necessary */ 230 dSP;
151 svptr = SvGROW (data, length + dataoffset); 231 SV *cb = sv_2mortal (on_next_submit);
232
233 on_next_submit = 0;
234
235 PUSHMARK (SP);
236 PUTBACK;
237 call_sv (cb, G_DISCARD | G_EVAL);
152 } 238 }
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} 239}
172 240
173static void 241static 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{ 242{
186 dSP; 243 dSP;
187 int count = 0;
188 aio_req req;
189 244
190 while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 245 if (req->flags & FLAG_SV2_RO_OFF)
246 SvREADONLY_off (req->sv2);
247
248 if (!EIO_CANCELLED (req) && req->callback)
191 { 249 {
192 nreqs--; 250 ENTER;
193 251 SAVETMPS;
194 if (req->type == REQ_QUIT)
195 started--;
196 else
197 {
198 int errorno = errno;
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 {
210 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
211 PL_laststatval = req->result;
212 PL_statcache = *(req->statdata);
213
214 Safefree (req->statdata);
215 }
216
217 PUSHMARK (SP); 252 PUSHMARK (SP);
218 XPUSHs (sv_2mortal (newSViv (req->result))); 253 EXTEND (SP, 1);
219 PUTBACK;
220 call_sv (req->callback, G_VOID);
221 SPAGAIN;
222
223 if (req->callback)
224 SvREFCNT_dec (req->callback);
225
226 errno = errorno;
227 count++;
228 }
229
230 Safefree (req);
231 }
232
233 if (qs)
234 send_reqs ();
235
236 return count;
237}
238
239static void *
240aio_proc (void *thr_arg)
241{
242 aio_req req;
243
244 /* then loop */
245 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
246 {
247 errno = 0; /* strictly unnecessary */
248 254
249 switch (req->type) 255 switch (req->type)
250 { 256 {
251 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; 257 case EIO_READDIR:
252 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; 258 {
253#if SYS_readahead 259 SV *rv = &PL_sv_undef;
254 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
255#else
256 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
257#endif
258 260
259 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 261 if (req->result >= 0)
260 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 262 {
261 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 263 int i;
264 char *names = (char *)req->ptr2;
265 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
266 AV *av = newAV ();
262 267
263 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 268 av_extend (av, req->result - 1);
264 case REQ_CLOSE: req->result = close (req->fd); break;
265 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
266 269
267 case REQ_FSYNC: req->result = fsync (req->fd); break; 270 for (i = 0; i < req->result; ++i)
268 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 271 {
272 if (req->int1 & EIO_READDIR_DENTS)
273 {
274 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
269 275
276 if (req->int1 & EIO_READDIR_CUSTOM2)
277 {
278 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
279 AV *avent = newAV ();
280
281 av_extend (avent, 2);
282
283 if (!sv_type [ent->type])
284 {
285 sv_type [ent->type] = newSViv (ent->type);
286 SvREADONLY_on (sv_type [ent->type]);
287 }
288
289 av_store (avent, 0, namesv);
290 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
291 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
292
293 av_store (av, i, newRV_noinc ((SV *)avent));
294 }
295 else
296 av_store (av, i, namesv);
297
298 ++ent;
299 }
300 else
301 {
302 SV *name = newSVpv (names, 0);
303 av_store (av, i, name);
304 names += SvCUR (name) + 1;
305 }
306 }
307
308 rv = sv_2mortal (newRV_noinc ((SV *)av));
309 }
310
311 PUSHs (rv);
312
313 if (req->int1 & EIO_READDIR_CUSTOM1)
314 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
315 }
316 break;
317
318 case EIO_OPEN:
319 {
320 /* convert fd to fh */
321 SV *fh = &PL_sv_undef;
322
323 if (req->result >= 0)
324 {
325 GV *gv = (GV *)sv_newmortal ();
326 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
327 char sym [64];
328 int symlen;
329
330 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
331 gv_init (gv, stash, sym, symlen, 0);
332
333 symlen = snprintf (
334 sym,
335 sizeof (sym),
336 "%s&=%d",
337 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
338 (int)req->result
339 );
340
341 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
342 fh = (SV *)gv;
343 }
344
345 PUSHs (fh);
346 }
347 break;
348
349 case EIO_GROUP:
350 req->int1 = 2; /* mark group as finished */
351
352 if (req->sv1)
353 {
354 int i;
355 AV *av = (AV *)req->sv1;
356
357 EXTEND (SP, AvFILL (av) + 1);
358 for (i = 0; i <= AvFILL (av); ++i)
359 PUSHs (*av_fetch (av, i, 0));
360 }
361 break;
362
363 case EIO_NOP:
270 case REQ_QUIT: 364 case EIO_BUSY:
271 write (respipe[1], (void *)&req, sizeof (req)); 365 break;
272 return 0; 366
367 case EIO_READLINK:
368 if (req->result > 0)
369 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
370 break;
371
372 case EIO_STAT:
373 case EIO_LSTAT:
374 case EIO_FSTAT:
375 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
376 PL_laststatval = req->result;
377 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
378 PUSHs (sv_2mortal (newSViv (req->result)));
379 break;
380
381 case EIO_READ:
382 {
383 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
384 *SvEND (req->sv2) = 0;
385 SvPOK_only (req->sv2);
386 SvSETMAGIC (req->sv2);
387 PUSHs (sv_2mortal (newSViv (req->result)));
388 }
389 break;
390
391 case EIO_DUP2:
392 if (req->result > 0)
393 req->result = 0;
394 /* FALLTHROUGH */
273 395
274 default: 396 default:
275 req->result = ENOSYS; 397 PUSHs (sv_2mortal (newSViv (req->result)));
276 break; 398 break;
277 } 399 }
278 400
279 req->errorno = errno; 401 errno = req->errorno;
280 write (respipe[1], (void *)&req, sizeof (req)); 402
403 PUTBACK;
404 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
405 SPAGAIN;
406
407 FREETMPS;
408 LEAVE;
409
410 PUTBACK;
281 } 411 }
282 412
413 return !!SvTRUE (ERRSV);
414}
415
416static void req_destroy (aio_req req)
417{
418 if (req->self)
419 {
420 sv_unmagic (req->self, PERL_MAGIC_ext);
421 SvREFCNT_dec (req->self);
422 }
423
424 SvREFCNT_dec (req->sv1);
425 SvREFCNT_dec (req->sv2);
426 SvREFCNT_dec (req->callback);
427
428 Safefree (req);
429}
430
431static void req_cancel_subs (aio_req grp)
432{
433 aio_req sub;
434
435 if (grp->type != EIO_GROUP)
436 return;
437
438 SvREFCNT_dec (grp->sv2);
439 grp->sv2 = 0;
440
441 eio_grp_cancel (grp);
442}
443
444#ifdef USE_SOCKETS_AS_HANDLES
445# define TO_SOCKET(x) (win32_get_osfhandle (x))
446#else
447# define TO_SOCKET(x) (x)
448#endif
449
450static void
451create_respipe (void)
452{
453 int old_readfd = respipe [0];
454
455 if (respipe [1] >= 0)
456 respipe_close (TO_SOCKET (respipe [1]));
457
458#ifdef _WIN32
459 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
460#else
461 if (pipe (respipe))
462#endif
463 croak ("unable to initialize result pipe");
464
465 if (old_readfd >= 0)
466 {
467 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
468 croak ("unable to initialize result pipe(2)");
469
470 respipe_close (respipe [0]);
471 respipe [0] = old_readfd;
472 }
473
474#ifdef _WIN32
475 int arg = 1;
476 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
477 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
478#else
479 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
480 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
481#endif
482 croak ("unable to initialize result pipe(3)");
483
484 respipe_osf [0] = TO_SOCKET (respipe [0]);
485 respipe_osf [1] = TO_SOCKET (respipe [1]);
486}
487
488static void poll_wait (void)
489{
490 fd_set rfd;
491
492 while (eio_nreqs ())
493 {
494 int size;
495
496 X_LOCK (reslock);
497 size = res_queue.size;
498 X_UNLOCK (reslock);
499
500 if (size)
501 return;
502
503 etp_maybe_start_thread ();
504
505 FD_ZERO (&rfd);
506 FD_SET (respipe [0], &rfd);
507
508 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
509 }
510}
511
512static int poll_cb (void)
513{
514 for (;;)
515 {
516 int res = eio_poll ();
517
518 if (res > 0)
519 croak (0);
520
521 if (!max_outstanding || max_outstanding > eio_nreqs ())
522 return res;
523
524 poll_wait ();
525 }
526}
527
528static void atfork_child (void)
529{
530 create_respipe ();
531}
532
533static SV *
534get_cb (SV *cb_sv)
535{
536 HV *st;
537 GV *gvp;
538 CV *cv;
539
540 if (!SvOK (cb_sv))
283 return 0; 541 return 0;
542
543 cv = sv_2cv (cb_sv, &st, &gvp, 0);
544
545 if (!cv)
546 croak ("IO::AIO callback must be undef or a CODE reference");
547
548 return (SV *)cv;
549}
550
551#define dREQ \
552 SV *cb_cv; \
553 aio_req req; \
554 int req_pri = next_pri; \
555 next_pri = EIO_PRI_DEFAULT; \
556 \
557 cb_cv = get_cb (callback); \
558 \
559 Newz (0, req, 1, eio_req); \
560 if (!req) \
561 croak ("out of memory during eio_req allocation"); \
562 \
563 req->callback = SvREFCNT_inc (cb_cv); \
564 req->pri = req_pri
565
566#define REQ_SEND \
567 PUTBACK; \
568 req_submit (req); \
569 SPAGAIN; \
570 \
571 if (GIMME_V != G_VOID) \
572 XPUSHs (req_sv (req, AIO_REQ_KLASS));
573
574static int
575extract_fd (SV *fh, int wr)
576{
577 int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
578
579 if (fd < 0)
580 croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
581
582 return fd;
284} 583}
285 584
286MODULE = IO::AIO PACKAGE = IO::AIO 585MODULE = IO::AIO PACKAGE = IO::AIO
287 586
587PROTOTYPES: ENABLE
588
288BOOT: 589BOOT:
289{ 590{
290 if (pipe (reqpipe) || pipe (respipe)) 591 static const struct {
291 croak ("unable to initialize request or result pipe"); 592 const char *name;
593 IV iv;
594 } *civ, const_iv[] = {
595# define const_iv(name, value) { # name, (IV) value },
596# define const_eio(name) { # name, (IV) EIO_ ## name },
597 const_iv (EXDEV , EXDEV)
598 const_iv (ENOSYS , ENOSYS)
599 const_iv (O_RDONLY, O_RDONLY)
600 const_iv (O_WRONLY, O_WRONLY)
601 const_iv (O_CREAT , O_CREAT)
602 const_iv (O_TRUNC , O_TRUNC)
603#ifndef _WIN32
604 const_iv (S_IFIFO , S_IFIFO)
605#endif
606 const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
607 const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
608 const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
609 const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
610 const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
611 const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
292 612
293 if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) 613 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
294 croak ("cannot set result pipe to nonblocking mode"); 614 const_eio (SYNC_FILE_RANGE_WRITE)
615 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
295 616
296 if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) 617 const_eio (READDIR_DENTS)
297 croak ("cannot set result pipe to nonblocking mode"); 618 const_eio (READDIR_DIRS_FIRST)
298} 619 const_eio (READDIR_STAT_ORDER)
620 const_eio (READDIR_FOUND_UNKNOWN)
299 621
622 const_eio (DT_UNKNOWN)
623 const_eio (DT_FIFO)
624 const_eio (DT_CHR)
625 const_eio (DT_DIR)
626 const_eio (DT_BLK)
627 const_eio (DT_REG)
628 const_eio (DT_LNK)
629 const_eio (DT_SOCK)
630 const_eio (DT_WHT)
631 };
632
633 stash = gv_stashpv ("IO::AIO", 1);
634
635 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
636 newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
637
638 create_respipe ();
639
640 if (eio_init (want_poll, done_poll) < 0)
641 croak ("IO::AIO: unable to initialise eio library");
642
643 /* atfork child called in fifo order, so before eio's handler */
644 X_THREAD_ATFORK (0, 0, atfork_child);
645}
646
300void 647void
301min_parallel(nthreads) 648max_poll_reqs (int nreqs)
302 int nthreads
303 PROTOTYPE: $ 649 PROTOTYPE: $
304 CODE: 650 CODE:
305 while (nthreads > started) 651 eio_set_max_poll_reqs (nreqs);
306 start_thread ();
307 652
308void 653void
309max_parallel(nthreads) 654max_poll_time (double nseconds)
310 int nthreads
311 PROTOTYPE: $ 655 PROTOTYPE: $
312 CODE: 656 CODE:
657 eio_set_max_poll_time (nseconds);
658
659void
660min_parallel (int nthreads)
661 PROTOTYPE: $
662 CODE:
663 eio_set_min_parallel (nthreads);
664
665void
666max_parallel (int nthreads)
667 PROTOTYPE: $
668 CODE:
669 eio_set_max_parallel (nthreads);
670
671void
672max_idle (int nthreads)
673 PROTOTYPE: $
674 CODE:
675 eio_set_max_idle (nthreads);
676
677void
678max_outstanding (int maxreqs)
679 PROTOTYPE: $
680 CODE:
681 max_outstanding = maxreqs;
682
683void
684aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
685 PROTOTYPE: $$$;$
686 PPCODE:
313{ 687{
314 int cur = started; 688 dREQ;
315 while (cur > nthreads) 689
316 { 690 req->type = EIO_OPEN;
317 end_thread (); 691 req->sv1 = newSVsv (pathname);
692 req->ptr1 = SvPVbyte_nolen (req->sv1);
693 req->int1 = flags;
694 req->int2 = mode;
695
696 REQ_SEND;
697}
698
699void
700aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
701 PROTOTYPE: $;$
702 ALIAS:
703 aio_fsync = EIO_FSYNC
704 aio_fdatasync = EIO_FDATASYNC
705 PPCODE:
706{
707 int fd = extract_fd (fh, 0);
708 dREQ;
709
710 req->type = ix;
711 req->sv1 = newSVsv (fh);
712 req->int1 = fd;
713
714 REQ_SEND (req);
715}
716
717void
718aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
719 PROTOTYPE: $$$$;$
720 PPCODE:
721{
722 int fd = extract_fd (fh, 0);
723 dREQ;
724
725 req->type = EIO_SYNC_FILE_RANGE;
726 req->sv1 = newSVsv (fh);
727 req->int1 = fd;
728 req->offs = offset;
729 req->size = nbytes;
730 req->int2 = flags;
731
732 REQ_SEND (req);
733}
734
735void
736aio_close (SV *fh, SV *callback=&PL_sv_undef)
737 PROTOTYPE: $;$
738 PPCODE:
739{
740 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
741 int fd = extract_fd (fh, 0);
742 dREQ;
743
744 if (close_pipe < 0)
745 {
746 int pipefd [2];
747
748 if (pipe (pipefd) < 0
749 || close (pipefd [1]) < 0
750 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
751 abort (); /*D*/
752
753 close_pipe = pipefd [0];
754 }
755
756 req->type = EIO_DUP2;
757 req->int1 = close_pipe;
758 req->sv2 = newSVsv (fh);
759 req->int2 = fd;
760
761 REQ_SEND (req);
762}
763
764void
765aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
766 ALIAS:
767 aio_read = EIO_READ
768 aio_write = EIO_WRITE
769 PROTOTYPE: $$$$$;$
770 PPCODE:
771{
772 STRLEN svlen;
773 int fd = extract_fd (fh, ix == EIO_WRITE);
774 char *svptr = SvPVbyte (data, svlen);
775 UV len = SvUV (length);
776
777 if (dataoffset < 0)
778 dataoffset += svlen;
779
780 if (dataoffset < 0 || dataoffset > svlen)
781 croak ("dataoffset outside of data scalar");
782
783 if (ix == EIO_WRITE)
784 {
785 /* write: check length and adjust. */
786 if (!SvOK (length) || len + dataoffset > svlen)
787 len = svlen - dataoffset;
788 }
789 else
790 {
791 /* read: check type and grow scalar as necessary */
792 SvUPGRADE (data, SVt_PV);
793 svptr = SvGROW (data, len + dataoffset + 1);
794 }
795
796 {
797 dREQ;
798
799 req->type = ix;
800 req->sv1 = newSVsv (fh);
801 req->int1 = fd;
802 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
803 req->size = len;
804 req->sv2 = SvREFCNT_inc (data);
805 req->ptr2 = (char *)svptr + dataoffset;
806 req->stroffset = dataoffset;
807
808 if (!SvREADONLY (data))
318 cur--; 809 {
810 SvREADONLY_on (data);
811 req->flags |= FLAG_SV2_RO_OFF;
319 } 812 }
320 813
321 while (started > nthreads) 814 REQ_SEND;
815 }
816}
817
818void
819aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
820 PROTOTYPE: $$;$
821 PPCODE:
822{
823 SV *data;
824 dREQ;
825
826 req->type = EIO_READLINK;
827 req->sv1 = newSVsv (path);
828 req->ptr1 = SvPVbyte_nolen (req->sv1);
829
830 REQ_SEND;
831}
832
833void
834aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
835 PROTOTYPE: $$$$;$
836 PPCODE:
837{
838 int ifd = extract_fd (in_fh , 0);
839 int ofd = extract_fd (out_fh, 0);
840 dREQ;
841
842 req->type = EIO_SENDFILE;
843 req->sv1 = newSVsv (out_fh);
844 req->int1 = ofd;
845 req->sv2 = newSVsv (in_fh);
846 req->int2 = ifd;
847 req->offs = in_offset;
848 req->size = length;
849
850 REQ_SEND;
851}
852
853void
854aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
855 PROTOTYPE: $$$;$
856 PPCODE:
857{
858 int fd = extract_fd (fh, 0);
859 dREQ;
860
861 req->type = EIO_READAHEAD;
862 req->sv1 = newSVsv (fh);
863 req->int1 = fd;
864 req->offs = offset;
865 req->size = length;
866
867 REQ_SEND;
868}
869
870void
871aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
872 ALIAS:
873 aio_stat = EIO_STAT
874 aio_lstat = EIO_LSTAT
875 PPCODE:
876{
877 dREQ;
878
879 req->sv1 = newSVsv (fh_or_path);
880
881 if (SvPOK (req->sv1))
882 {
883 req->type = ix;
884 req->ptr1 = SvPVbyte_nolen (req->sv1);
885 }
886 else
887 {
888 req->type = EIO_FSTAT;
889 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
890 }
891
892 REQ_SEND;
893}
894
895void
896aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
897 PPCODE:
898{
899 dREQ;
900
901 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
902 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
903 req->sv1 = newSVsv (fh_or_path);
904
905 if (SvPOK (req->sv1))
906 {
907 req->type = EIO_UTIME;
908 req->ptr1 = SvPVbyte_nolen (req->sv1);
909 }
910 else
911 {
912 req->type = EIO_FUTIME;
913 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
914 }
915
916 REQ_SEND;
917}
918
919void
920aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
921 PPCODE:
922{
923 dREQ;
924
925 req->sv1 = newSVsv (fh_or_path);
926 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
927
928 if (SvPOK (req->sv1))
929 {
930 req->type = EIO_TRUNCATE;
931 req->ptr1 = SvPVbyte_nolen (req->sv1);
932 }
933 else
934 {
935 req->type = EIO_FTRUNCATE;
936 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
937 }
938
939 REQ_SEND;
940}
941
942void
943aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
944 ALIAS:
945 aio_chmod = EIO_CHMOD
946 aio_mkdir = EIO_MKDIR
947 PPCODE:
948{
949 dREQ;
950
951 req->int2 = mode;
952 req->sv1 = newSVsv (fh_or_path);
953
954 if (SvPOK (req->sv1))
955 {
956 req->type = ix;
957 req->ptr1 = SvPVbyte_nolen (req->sv1);
958 }
959 else
960 {
961 req->type = EIO_FCHMOD;
962 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
963 }
964
965 REQ_SEND;
966}
967
968void
969aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
970 PPCODE:
971{
972 dREQ;
973
974 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
975 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
976 req->sv1 = newSVsv (fh_or_path);
977
978 if (SvPOK (req->sv1))
979 {
980 req->type = EIO_CHOWN;
981 req->ptr1 = SvPVbyte_nolen (req->sv1);
982 }
983 else
984 {
985 req->type = EIO_FCHOWN;
986 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
987 }
988
989 REQ_SEND;
990}
991
992void
993aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
994 PPCODE:
995{
996 dREQ;
997
998 req->type = EIO_READDIR;
999 req->sv1 = newSVsv (pathname);
1000 req->ptr1 = SvPVbyte_nolen (req->sv1);
1001 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1002
1003 if (flags & EIO_READDIR_DENTS)
1004 req->int1 |= EIO_READDIR_CUSTOM2;
1005
1006 REQ_SEND;
1007}
1008
1009void
1010aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1011 ALIAS:
1012 aio_unlink = EIO_UNLINK
1013 aio_rmdir = EIO_RMDIR
1014 aio_readdir = EIO_READDIR
1015 PPCODE:
1016{
1017 dREQ;
1018
1019 req->type = ix;
1020 req->sv1 = newSVsv (pathname);
1021 req->ptr1 = SvPVbyte_nolen (req->sv1);
1022
1023 REQ_SEND;
1024}
1025
1026void
1027aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1028 ALIAS:
1029 aio_link = EIO_LINK
1030 aio_symlink = EIO_SYMLINK
1031 aio_rename = EIO_RENAME
1032 PPCODE:
1033{
1034 dREQ;
1035
1036 req->type = ix;
1037 req->sv1 = newSVsv (oldpath);
1038 req->ptr1 = SvPVbyte_nolen (req->sv1);
1039 req->sv2 = newSVsv (newpath);
1040 req->ptr2 = SvPVbyte_nolen (req->sv2);
1041
1042 REQ_SEND;
1043}
1044
1045void
1046aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1047 PPCODE:
1048{
1049 dREQ;
1050
1051 req->type = EIO_MKNOD;
1052 req->sv1 = newSVsv (pathname);
1053 req->ptr1 = SvPVbyte_nolen (req->sv1);
1054 req->int2 = (mode_t)mode;
1055 req->offs = dev;
1056
1057 REQ_SEND;
1058}
1059
1060void
1061aio_busy (double delay, SV *callback=&PL_sv_undef)
1062 PPCODE:
1063{
1064 dREQ;
1065
1066 req->type = EIO_BUSY;
1067 req->nv1 = delay < 0. ? 0. : delay;
1068
1069 REQ_SEND;
1070}
1071
1072void
1073aio_group (SV *callback=&PL_sv_undef)
1074 PROTOTYPE: ;$
1075 PPCODE:
1076{
1077 dREQ;
1078
1079 req->type = EIO_GROUP;
1080
1081 req_submit (req);
1082 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1083}
1084
1085void
1086aio_nop (SV *callback=&PL_sv_undef)
1087 ALIAS:
1088 aio_nop = EIO_NOP
1089 aio_sync = EIO_SYNC
1090 PPCODE:
1091{
1092 dREQ;
1093
1094 req->type = ix;
1095
1096 REQ_SEND;
1097}
1098
1099int
1100aioreq_pri (int pri = 0)
1101 PROTOTYPE: ;$
1102 CODE:
1103 RETVAL = next_pri;
1104 if (items > 0)
1105 {
1106 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1107 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1108 next_pri = pri;
1109 }
1110 OUTPUT:
1111 RETVAL
1112
1113void
1114aioreq_nice (int nice = 0)
1115 CODE:
1116 nice = next_pri - nice;
1117 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1118 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1119 next_pri = nice;
1120
1121void
1122flush ()
1123 PROTOTYPE:
1124 CODE:
1125 while (eio_nreqs ())
322 { 1126 {
323 poll_wait (); 1127 poll_wait ();
324 poll_cb (aTHX); 1128 poll_cb ();
325 }
326}
327
328void
329aio_open(pathname,flags,mode,callback)
330 SV * pathname
331 int flags
332 int mode
333 SV * callback
334 PROTOTYPE: $$$$
335 CODE:
336{
337 aio_req req;
338
339 Newz (0, req, 1, aio_cb);
340
341 if (!req)
342 croak ("out of memory during aio_req allocation");
343
344 req->type = REQ_OPEN;
345 req->data = newSVsv (pathname);
346 req->dataptr = SvPV_nolen (req->data);
347 req->fd = flags;
348 req->mode = mode;
349 req->callback = SvREFCNT_inc (callback);
350
351 send_req (req);
352}
353
354void
355aio_close(fh,callback)
356 InputStream fh
357 SV * callback
358 PROTOTYPE: $$
359 ALIAS:
360 aio_close = REQ_CLOSE
361 aio_fsync = REQ_FSYNC
362 aio_fdatasync = REQ_FDATASYNC
363 CODE:
364{
365 aio_req req;
366
367 Newz (0, req, 1, aio_cb);
368
369 if (!req)
370 croak ("out of memory during aio_req allocation");
371
372 req->type = ix;
373 req->fd = PerlIO_fileno (fh);
374 req->callback = SvREFCNT_inc (callback);
375
376 send_req (req);
377}
378
379void
380aio_read(fh,offset,length,data,dataoffset,callback)
381 InputStream fh
382 UV offset
383 IV length
384 SV * data
385 IV dataoffset
386 SV * callback
387 PROTOTYPE: $$$$$$
388 CODE:
389 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
390
391void
392aio_write(fh,offset,length,data,dataoffset,callback)
393 OutputStream fh
394 UV offset
395 IV length
396 SV * data
397 IV dataoffset
398 SV * callback
399 PROTOTYPE: $$$$$$
400 CODE:
401 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
402
403void
404aio_readahead(fh,offset,length,callback)
405 InputStream fh
406 UV offset
407 IV length
408 SV * callback
409 PROTOTYPE: $$$$
410 CODE:
411{
412 aio_req req;
413
414 if (length < 0)
415 croak ("length must not be negative");
416
417 Newz (0, req, 1, aio_cb);
418
419 if (!req)
420 croak ("out of memory during aio_req allocation");
421
422 req->type = REQ_READAHEAD;
423 req->fd = PerlIO_fileno (fh);
424 req->offset = offset;
425 req->length = length;
426 req->callback = SvREFCNT_inc (callback);
427
428 send_req (req);
429}
430
431void
432aio_stat(fh_or_path,callback)
433 SV * fh_or_path
434 SV * callback
435 PROTOTYPE: $$
436 ALIAS:
437 aio_lstat = 1
438 CODE:
439{
440 aio_req req;
441
442 Newz (0, req, 1, aio_cb);
443
444 if (!req)
445 croak ("out of memory during aio_req allocation");
446
447 New (0, req->statdata, 1, Stat_t);
448
449 if (!req->statdata)
450 croak ("out of memory during aio_req->statdata allocation");
451
452 if (SvPOK (fh_or_path))
453 { 1129 }
454 req->type = ix ? REQ_LSTAT : REQ_STAT;
455 req->data = newSVsv (fh_or_path);
456 req->dataptr = SvPV_nolen (req->data);
457 }
458 else
459 {
460 req->type = REQ_FSTAT;
461 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
462 }
463 1130
464 req->callback = SvREFCNT_inc (callback); 1131int
465 1132poll()
466 send_req (req);
467}
468
469void
470aio_unlink(pathname,callback)
471 SV * pathname
472 SV * callback
473 PROTOTYPE: $$ 1133 PROTOTYPE:
474 CODE: 1134 CODE:
475{ 1135 poll_wait ();
476 aio_req req; 1136 RETVAL = poll_cb ();
477 1137 OUTPUT:
478 Newz (0, req, 1, aio_cb); 1138 RETVAL
479
480 if (!req)
481 croak ("out of memory during aio_req allocation");
482
483 req->type = REQ_UNLINK;
484 req->data = newSVsv (pathname);
485 req->dataptr = SvPV_nolen (req->data);
486 req->callback = SvREFCNT_inc (callback);
487
488 send_req (req);
489}
490 1139
491int 1140int
492poll_fileno() 1141poll_fileno()
493 PROTOTYPE: 1142 PROTOTYPE:
494 CODE: 1143 CODE:
495 RETVAL = respipe[0]; 1144 RETVAL = respipe [0];
496 OUTPUT: 1145 OUTPUT:
497 RETVAL 1146 RETVAL
498 1147
499int 1148int
500poll_cb(...) 1149poll_cb(...)
501 PROTOTYPE: 1150 PROTOTYPE:
502 CODE: 1151 CODE:
503 RETVAL = poll_cb (aTHX); 1152 RETVAL = poll_cb ();
504 OUTPUT: 1153 OUTPUT:
505 RETVAL 1154 RETVAL
506 1155
507void 1156void
508poll_wait() 1157poll_wait()
… …
512 1161
513int 1162int
514nreqs() 1163nreqs()
515 PROTOTYPE: 1164 PROTOTYPE:
516 CODE: 1165 CODE:
517 RETVAL = nreqs; 1166 RETVAL = eio_nreqs ();
518 OUTPUT: 1167 OUTPUT:
519 RETVAL 1168 RETVAL
520 1169
1170int
1171nready()
1172 PROTOTYPE:
1173 CODE:
1174 RETVAL = eio_nready ();
1175 OUTPUT:
1176 RETVAL
1177
1178int
1179npending()
1180 PROTOTYPE:
1181 CODE:
1182 RETVAL = eio_npending ();
1183 OUTPUT:
1184 RETVAL
1185
1186int
1187nthreads()
1188 PROTOTYPE:
1189 CODE:
1190 RETVAL = eio_nthreads ();
1191 OUTPUT:
1192 RETVAL
1193
1194int
1195fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1196 PROTOTYPE: $$$$
1197 CODE:
1198{
1199 #if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1200 RETVAL = posix_fadvise (fh, offset, length, advice);
1201 #else
1202 RETVAL = errno = ENOSYS;
1203 #endif
1204}
1205 OUTPUT:
1206 RETVAL
1207
1208ssize_t
1209sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1210 PROTOTYPE: $$$$
1211 CODE:
1212 eio_sendfile_sync (ofh, ifh, offset, count);
1213
1214void _on_next_submit (SV *cb)
1215 CODE:
1216 SvREFCNT_dec (on_next_submit);
1217 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1218
1219PROTOTYPES: DISABLE
1220
1221MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1222
1223void
1224cancel (aio_req_ornot req)
1225 CODE:
1226 eio_cancel (req);
1227
1228void
1229cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1230 PPCODE:
1231{
1232 if (GIMME_V != G_VOID)
1233 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1234
1235 if (items > 1)
1236 {
1237 SV *cb_cv = get_cb (callback);
1238
1239 SvREFCNT_dec (req->callback);
1240 req->callback = SvREFCNT_inc (cb_cv);
1241 }
1242}
1243
1244MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1245
1246void
1247add (aio_req grp, ...)
1248 PPCODE:
1249{
1250 int i;
1251
1252 if (grp->int1 == 2)
1253 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1254
1255 for (i = 1; i < items; ++i )
1256 {
1257 aio_req req;
1258
1259 if (GIMME_V != G_VOID)
1260 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1261
1262 req = SvAIO_REQ (ST (i));
1263
1264 if (req)
1265 eio_grp_add (grp, req);
1266 }
1267}
1268
1269void
1270cancel_subs (aio_req_ornot req)
1271 CODE:
1272 req_cancel_subs (req);
1273
1274void
1275result (aio_req grp, ...)
1276 CODE:
1277{
1278 int i;
1279 AV *av;
1280
1281 grp->errorno = errno;
1282
1283 av = newAV ();
1284 av_extend (av, items - 1);
1285
1286 for (i = 1; i < items; ++i )
1287 av_push (av, newSVsv (ST (i)));
1288
1289 SvREFCNT_dec (grp->sv1);
1290 grp->sv1 = (SV *)av;
1291}
1292
1293void
1294errno (aio_req grp, int errorno = errno)
1295 CODE:
1296 grp->errorno = errorno;
1297
1298void
1299limit (aio_req grp, int limit)
1300 CODE:
1301 eio_grp_limit (grp, limit);
1302
1303void
1304feed (aio_req grp, SV *callback=&PL_sv_undef)
1305 CODE:
1306{
1307 SvREFCNT_dec (grp->sv2);
1308 grp->sv2 = newSVsv (callback);
1309 grp->feed = aio_grp_feed;
1310
1311 if (grp->int2 <= 0)
1312 grp->int2 = 2;
1313
1314 eio_grp_limit (grp, grp->int2);
1315}
1316

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