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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 1.212 by root, Sun Apr 8 00:11:50 2012 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>
19
20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
21# include <sys/mman.h>
22#endif
23
12#if __linux 24#if __linux__
13#include <sys/syscall.h> 25# include <linux/fs.h>
26# ifdef FS_IOC_FIEMAP
27# include <linux/types.h>
28# include <linux/fiemap.h>
29# define HAVE_FIEMAP 1
14#endif 30# endif
31#endif
15 32
16#include <pthread.h> 33/* perl namespace pollution */
34#undef VERSION
17 35
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 36/* perl stupidly overrides readdir and maybe others */
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 37/* with thread-unsafe versions, imagine that :( */
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 38#undef readdir
39#undef opendir
40#undef closedir
21 41
22#if __ia64 42#ifdef _WIN32
23# define STACKSIZE 65536 43
44 // perl overrides all those nice libc functions
45
46 #undef malloc
47 #undef free
48 #undef open
49 #undef read
50 #undef write
51 #undef send
52 #undef recv
53 #undef stat
54 #undef lstat
55 #undef fstat
56 #undef truncate
57 #undef ftruncate
58 #undef open
59 #undef link
60 #undef close
61 #undef unlink
62 #undef mkdir
63 #undef rmdir
64 #undef rename
65 #undef lseek
66 #undef opendir
67 #undef readdir
68 #undef closedir
69 #undef chmod
70 #undef fchmod
71 #undef dup
72 #undef dup2
73 #undef abort
74 #undef pipe
75
76 #define EIO_STRUCT_STAT struct _stati64
77 #define EIO_STRUCT_STATI64
78
24#else 79#else
25# define STACKSIZE 4096 80
81 #include <sys/time.h>
82 #include <sys/select.h>
83 #include <unistd.h>
84 #include <utime.h>
85 #include <signal.h>
86
87 #define EIO_STRUCT_STAT Stat_t
88
89#endif
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
104typedef SV SV8; /* byte-sv, used for argument-checking */
105typedef int aio_rfd; /* read file desriptor */
106typedef int aio_wfd; /* write file descriptor */
107
108static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
109
110#define EIO_REQ_MEMBERS \
111 SV *callback; \
112 SV *sv1, *sv2; \
113 SV *sv3, *sv4; \
114 STRLEN stroffset; \
115 SV *self;
116
117#define EIO_NO_WRAPPERS 1
118
119#include "libeio/config.h"
120#include "libeio/eio.h"
121
122static int req_invoke (eio_req *req);
123#define EIO_FINISH(req) req_invoke (req)
124static void req_destroy (eio_req *grp);
125#define EIO_DESTROY(req) req_destroy (req)
126
127#include "libeio/eio.c"
128
129#if !HAVE_POSIX_FADVISE
130# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
131#endif
132
133#if !HAVE_POSIX_MADVISE
134# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
135#endif
136
137#ifndef MAP_ANONYMOUS
138# ifdef MAP_ANON
139# define MAP_ANONYMOUS MAP_ANON
140# else
141# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
26#endif 142# endif
143#endif
144
145/* defines all sorts of constants to 0 unless they are already defined */
146#include "def0.h"
147
148#ifndef makedev
149# define makedev(maj,min) (((maj) << 8) | (min))
150#endif
151#ifndef major
152# define major(dev) ((dev) >> 8)
153#endif
154#ifndef minor
155# define minor(dev) ((dev) & 0xff)
156#endif
157
158#ifndef PAGESIZE
159# define PAGESIZE sysconf (_SC_PAGESIZE)
160#endif
161
162/*****************************************************************************/
163
164static void
165fiemap (eio_req *req)
166{
167 req->result = -1;
168
169#if HAVE_FIEMAP
170 int count = req->int3;
171
172 /* heuristic: first try with 64 extents if we don't know how many, */
173 /* as most files have (hopefully) fewer than this many extents */
174 /* in fact, most should have <= 2, so maybe the 72 below is probably overkill */
175 if (count < 0)
176 count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
177
178 for (;;)
179 {
180 struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
181 errno = ENOMEM;
182 if (!fiemap)
183 return;
184
185 req->ptr1 = fiemap;
186 req->flags |= EIO_FLAG_PTR1_FREE;
187
188 fiemap->fm_start = req->offs;
189 fiemap->fm_length = req->size;
190 fiemap->fm_flags = req->int2;
191 fiemap->fm_extent_count = count;
192
193 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
194 return;
195
196 if (req->int3 >= 0)
197 break; /* when not autosizing we are done */
198
199 if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
200 break; /* autosizing successful, we are done */
201
202 fiemap->fm_flags = req->int2;
203 fiemap->fm_extent_count = 0;
204
205 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
206 return;
207
208 count = fiemap->fm_mapped_extents;
209
210 free (fiemap);
211 }
212
213 req->result = 0;
214
215#else
216 errno = ENOSYS;
217#endif
218}
219
220/*****************************************************************************/
27 221
28enum { 222enum {
29 REQ_QUIT, 223 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}; 224};
35 225
36typedef struct aio_cb {
37 struct aio_cb *volatile next;
38
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; 226typedef eio_req *aio_req;
227typedef eio_req *aio_req_ornot;
228typedef eio_wd aio_wd;
55 229
56static int started; 230static SV *on_next_submit;
57static volatile int nreqs; 231static int next_pri = EIO_PRI_DEFAULT;
58static int max_outstanding = 1<<30; 232static int max_outstanding;
59static int respipe [2];
60 233
61static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 234static s_epipe respipe;
62static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
63static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
64 235
65static volatile aio_req reqs, reqe; /* queue start, queue end */ 236static void req_destroy (aio_req req);
66static volatile aio_req ress, rese; /* queue start, queue end */ 237static void req_cancel (aio_req req);
67 238
68static void 239static void
69poll_wait () 240want_poll (void)
70{ 241{
71 if (nreqs && !ress) 242 /* write a dummy byte to the pipe so fh becomes ready */
243 s_epipe_signal (&respipe);
244}
245
246static void
247done_poll (void)
248{
249 /* read any signals sent by the worker threads */
250 s_epipe_drain (&respipe);
251}
252
253/* must be called at most once */
254static SV *
255req_sv (aio_req req, HV *stash)
256{
257 if (!req->self)
72 { 258 {
73 fd_set rfd; 259 req->self = (SV *)newHV ();
74 FD_ZERO(&rfd); 260 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 } 261 }
262
263 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
264}
265
266static SV *
267newSVaio_wd (aio_wd wd)
268{
269 return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
270}
271
272static aio_req
273SvAIO_REQ (SV *sv)
274{
275 MAGIC *mg;
276
277 if (!SvROK (sv)
278 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
279 || (SvSTASH (SvRV (sv)) != aio_grp_stash
280 && SvSTASH (SvRV (sv)) != aio_req_stash
281 && !sv_derived_from (sv, "IO::AIO::REQ")))
282 croak ("object of class IO::AIO::REQ expected");
283
284 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
285
286 return mg ? (aio_req)mg->mg_ptr : 0;
287}
288
289static aio_wd
290SvAIO_WD (SV *sv)
291{
292 if (!SvROK (sv)
293 || SvTYPE (SvRV (sv)) != SVt_PVMG
294 || SvSTASH (SvRV (sv)) != aio_wd_stash)
295 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
296
297 return (aio_wd)(long)SvIVX (SvRV (sv));
298}
299
300static void
301aio_grp_feed (aio_req grp)
302{
303 if (grp->sv2 && SvOK (grp->sv2))
304 {
305 dSP;
306
307 ENTER;
308 SAVETMPS;
309 PUSHMARK (SP);
310 XPUSHs (req_sv (grp, aio_grp_stash));
311 PUTBACK;
312 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
313 SPAGAIN;
314 FREETMPS;
315 LEAVE;
316 }
317}
318
319static void
320req_submit (eio_req *req)
321{
322 eio_submit (req);
323
324 if (expect_false (on_next_submit))
325 {
326 dSP;
327 SV *cb = sv_2mortal (on_next_submit);
328
329 on_next_submit = 0;
330
331 PUSHMARK (SP);
332 PUTBACK;
333 call_sv (cb, G_DISCARD | G_EVAL);
334 }
79} 335}
80 336
81static int 337static int
82poll_cb () 338req_invoke (eio_req *req)
83{ 339{
84 dSP; 340 if (req->flags & FLAG_SV2_RO_OFF)
85 int count = 0; 341 SvREADONLY_off (req->sv2);
86 aio_req req, prv;
87 342
88 pthread_mutex_lock (&reslock); 343 if (!EIO_CANCELLED (req) && req->callback)
89
90 {
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 { 344 {
104 nreqs--; 345 dSP;
346 static SV *sv_result_cache; /* caches the result integer SV */
347 SV *sv_result;
105 348
106 if (req->type == REQ_QUIT) 349 ENTER;
107 started--; 350 SAVETMPS;
108 else 351 PUSHMARK (SP);
352 EXTEND (SP, 1);
353
354 /* do not recreate the result IV from scratch each time */
355 if (expect_true (sv_result_cache))
109 { 356 {
110 int errorno = errno; 357 sv_result = sv_result_cache; sv_result_cache = 0;
111 errno = req->errorno; 358 SvIV_set (sv_result, req->result);
112 359 SvIOK_only (sv_result);
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 {
125 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
126 PL_laststatval = req->result;
127 PL_statcache = *(req->statdata);
128
129 Safefree (req->statdata);
130 }
131
132 ENTER;
133 PUSHMARK (SP);
134 XPUSHs (sv_2mortal (newSViv (req->result)));
135
136 if (req->type == REQ_OPEN)
137 {
138 /* convert fd to fh */
139 SV *fh;
140
141 PUTBACK;
142 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
143 SPAGAIN;
144
145 fh = SvREFCNT_inc (POPs);
146
147 PUSHMARK (SP);
148 XPUSHs (sv_2mortal (fh));
149 }
150
151 if (SvOK (req->callback))
152 {
153 PUTBACK;
154 call_sv (req->callback, G_VOID | G_EVAL);
155 SPAGAIN;
156 }
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;
258
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:
290 break;
291
292 default:
293 req->result = ENOSYS;
294 break;
295 }
296
297 req->errorno = errno;
298
299 pthread_mutex_lock (&reslock);
300
301 req->next = 0;
302
303 if (rese)
304 {
305 rese->next = req;
306 rese = req;
307 } 360 }
308 else 361 else
309 { 362 {
310 rese = ress = req; 363 sv_result = newSViv (req->result);
311 364 SvREADONLY_on (sv_result);
312 /* write a dummy byte to the pipe so fh becomes ready */
313 write (respipe [1], &respipe, 1);
314 } 365 }
315 366
316 pthread_mutex_unlock (&reslock); 367 switch (req->type)
368 {
369 case EIO_WD_OPEN:
370 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
371 break;
372
373 case EIO_READDIR:
374 {
375 SV *rv = &PL_sv_undef;
376
377 if (req->result >= 0)
378 {
379 int i;
380 char *names = (char *)req->ptr2;
381 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
382 AV *av = newAV ();
383
384 av_extend (av, req->result - 1);
385
386 for (i = 0; i < req->result; ++i)
387 {
388 if (req->int1 & EIO_READDIR_DENTS)
389 {
390 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
391
392 if (req->int1 & EIO_READDIR_CUSTOM2)
393 {
394 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
395 AV *avent = newAV ();
396
397 av_extend (avent, 2);
398
399 if (!sv_type [ent->type])
400 {
401 sv_type [ent->type] = newSViv (ent->type);
402 SvREADONLY_on (sv_type [ent->type]);
403 }
404
405 av_store (avent, 0, namesv);
406 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
407 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
408
409 av_store (av, i, newRV_noinc ((SV *)avent));
410 }
411 else
412 av_store (av, i, namesv);
413
414 ++ent;
415 }
416 else
417 {
418 SV *name = newSVpv (names, 0);
419 av_store (av, i, name);
420 names += SvCUR (name) + 1;
421 }
422 }
423
424 rv = sv_2mortal (newRV_noinc ((SV *)av));
425 }
426
427 PUSHs (rv);
428
429 if (req->int1 & EIO_READDIR_CUSTOM1)
430 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
431 }
432 break;
433
434 case EIO_OPEN:
435 {
436 /* convert fd to fh */
437 SV *fh = &PL_sv_undef;
438
439 if (req->result >= 0)
440 {
441 GV *gv = (GV *)sv_newmortal ();
442 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
443 char sym [64];
444 int symlen;
445
446 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
447 gv_init (gv, aio_stash, sym, symlen, 0);
448
449 symlen = snprintf (
450 sym,
451 sizeof (sym),
452 "%s&=%d",
453 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
454 (int)req->result
455 );
456
457 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
458 fh = (SV *)gv;
459 }
460
461 PUSHs (fh);
462 }
463 break;
464
465 case EIO_STATVFS:
466 case EIO_FSTATVFS:
467 {
468 SV *rv = &PL_sv_undef;
469
470#ifndef _WIN32
471 if (req->result >= 0)
472 {
473 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
474 HV *hv = newHV ();
475
476 rv = sv_2mortal (newRV_noinc ((SV *)hv));
477
478 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
479 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
480 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
481 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
482 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
483 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
484 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
485 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
486 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
487 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
488 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
489 }
490#endif
491
492 PUSHs (rv);
493 }
494
495 break;
496
497 case EIO_GROUP:
498 req->int1 = 2; /* mark group as finished */
499
500 if (req->sv1)
501 {
502 int i;
503 AV *av = (AV *)req->sv1;
504
505 EXTEND (SP, AvFILL (av) + 1);
506 for (i = 0; i <= AvFILL (av); ++i)
507 PUSHs (*av_fetch (av, i, 0));
508 }
509 break;
510
511 case EIO_NOP:
512 case EIO_BUSY:
513 break;
514
515 case EIO_READLINK:
516 case EIO_REALPATH:
517 if (req->result > 0)
518 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
519 break;
520
521 case EIO_STAT:
522 case EIO_LSTAT:
523 case EIO_FSTAT:
524 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
525
526 if (!(PL_laststatval = req->result))
527 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
528 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
529
530 PUSHs (sv_result);
531 break;
532
533 case EIO_SEEK:
534 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
535 break;
536
537 case EIO_READ:
538 {
539 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
540 *SvEND (req->sv2) = 0;
541 SvPOK_only (req->sv2);
542 SvSETMAGIC (req->sv2);
543 PUSHs (sv_result);
544 }
545 break;
546
547 case EIO_CUSTOM:
548 if (req->feed == fiemap)
549 {
550#if HAVE_FIEMAP
551 if (!req->result)
552 {
553 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
554
555 if (fiemap->fm_extent_count)
556 {
557 AV *av = newAV ();
558 int i;
559
560 while (fiemap->fm_mapped_extents)
561 {
562 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
563 AV *ext_av = newAV ();
564
565 av_store (ext_av, 3, newSVuv (extent->fe_flags));
566 av_store (ext_av, 2, newSVval64 (extent->fe_length));
567 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
568 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
569
570 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
571 }
572
573 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
574 }
575 else
576 {
577 SvIV_set (sv_result, fiemap->fm_mapped_extents);
578 PUSHs (sv_result);
579 }
580 }
581#endif
582 }
583 else
584 PUSHs (sv_result);
585 break;
586
587 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
588 if (req->result > 0)
589 SvIV_set (sv_result, 0);
590 /* FALLTHROUGH */
591
592 default:
593 PUSHs (sv_result);
594 break;
595 }
596
597 errno = req->errorno;
598
599 PUTBACK;
600 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
601 SPAGAIN;
602
603 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
604 SvREFCNT_dec (sv_result);
605 else
606 sv_result_cache = sv_result;
607
608 FREETMPS;
609 LEAVE;
610
611 PUTBACK;
317 } 612 }
318 while (type != REQ_QUIT); 613
614 return !!SvTRUE (ERRSV);
615}
616
617static void
618req_destroy (aio_req req)
619{
620 if (req->self)
621 {
622 sv_unmagic (req->self, PERL_MAGIC_ext);
623 SvREFCNT_dec (req->self);
624 }
625
626 SvREFCNT_dec (req->sv1);
627 SvREFCNT_dec (req->sv2);
628 SvREFCNT_dec (req->sv3);
629 SvREFCNT_dec (req->sv4);
630 SvREFCNT_dec (req->callback);
631
632 free (req);
633}
634
635static void
636req_cancel_subs (aio_req grp)
637{
638 if (grp->type != EIO_GROUP)
639 return;
640
641 SvREFCNT_dec (grp->sv2);
642 grp->sv2 = 0;
643
644 eio_grp_cancel (grp);
645}
646
647static void ecb_cold
648create_respipe (void)
649{
650 if (s_epipe_renew (&respipe))
651 croak ("IO::AIO: unable to initialize result pipe");
652}
653
654static void
655poll_wait (void)
656{
657 while (eio_nreqs ())
658 {
659 int size;
660
661 X_LOCK (reslock);
662 size = res_queue.size;
663 X_UNLOCK (reslock);
664
665 if (size)
666 return;
667
668 etp_maybe_start_thread ();
669
670 s_epipe_wait (&respipe);
671 }
672}
673
674static int
675poll_cb (void)
676{
677 for (;;)
678 {
679 int res = eio_poll ();
680
681 if (res > 0)
682 croak (0);
683
684 if (!max_outstanding || max_outstanding > eio_nreqs ())
685 return res;
686
687 poll_wait ();
688 }
689}
690
691static void ecb_cold
692reinit (void)
693{
694 create_respipe ();
695
696 if (eio_init (want_poll, done_poll) < 0)
697 croak ("IO::AIO: unable to initialise eio library");
698}
699
700/*****************************************************************************/
701
702#if !_POSIX_MAPPED_FILES
703# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
704# define munmap(addr,length) (errno = ENOSYS, -1)
705#endif
706
707#if !_POSIX_MEMORY_PROTECTION
708# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
709# define PROT_NONE 0
710# define PROT_WRITE 0
711# define MAP_PRIVATE 0
712# define MAP_SHARED 0
713# define MAP_FIXED 0
714#endif
715
716#define MMAP_MAGIC PERL_MAGIC_ext
717
718static int ecb_cold
719mmap_free (pTHX_ SV *sv, MAGIC *mg)
720{
721 int old_errno = errno;
722 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
723 errno = old_errno;
724
725 mg->mg_obj = 0; /* just in case */
726
727 SvREADONLY_off (sv);
728
729 if (SvPVX (sv) != mg->mg_ptr)
730 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
731
732 SvCUR_set (sv, 0);
733 SvPVX (sv) = 0;
734 SvOK_off (sv);
319 735
320 return 0; 736 return 0;
321} 737}
322 738
739static MGVTBL mmap_vtbl = {
740 0, 0, 0, 0, mmap_free
741};
742
743/*****************************************************************************/
744
745static SV *
746get_cb (SV *cb_sv)
747{
748 SvGETMAGIC (cb_sv);
749 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
750}
751
752static aio_req ecb_noinline
753dreq (SV *callback)
754{
755 SV *cb_cv;
756 aio_req req;
757 int req_pri = next_pri;
758 next_pri = EIO_PRI_DEFAULT;
759
760 cb_cv = get_cb (callback);
761
762 req = calloc (sizeof (*req), 1);
763 if (!req)
764 croak ("out of memory during eio_req allocation");
765
766 req->callback = SvREFCNT_inc (cb_cv);
767 req->pri = req_pri;
768
769 return req;
770}
771
772#define dREQ \
773 aio_req req = dreq (callback); \
774
775#define REQ_SEND \
776 PUTBACK; \
777 req_submit (req); \
778 SPAGAIN; \
779 \
780 if (GIMME_V != G_VOID) \
781 XPUSHs (req_sv (req, aio_req_stash));
782
783ecb_inline void
784req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
785{
786 if (expect_false (SvROK (path)))
787 {
788 SV *rv = SvRV (path);
789 SV *wdob;
790
791 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
792 {
793 path = AvARRAY (rv)[1];
794 wdob = AvARRAY (rv)[0];
795
796 if (SvOK (wdob))
797 {
798 *wd = SvAIO_WD (wdob);
799 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
800 }
801 else
802 *wd = EIO_INVALID_WD;
803 }
804 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
805 {
806 *wd = (aio_wd)(long)SvIVX (rv);
807 *wdsv = SvREFCNT_inc_NN (rv);
808 *ptr = ".";
809 return; /* path set to "." */
810 }
811 else
812 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
813 }
814
815 *pathsv = newSVsv (path);
816 *ptr = SvPVbyte_nolen (*pathsv);
817}
818
819static void ecb_noinline
820req_set_path1 (aio_req req, SV *path)
821{
822 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
823}
824
825static void ecb_noinline
826req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
827{
828 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
829
830 switch (SvTYPE (rv))
831 {
832 case SVt_PVIO:
833 case SVt_PVLV:
834 case SVt_PVGV:
835 req->type = type_fh;
836 req->sv1 = newSVsv (fh_or_path);
837 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
838 break;
839
840 default:
841 req->type = type_path;
842 req_set_path1 (req, fh_or_path);
843 break;
844 }
845}
846
847XS(boot_IO__AIO) ecb_cold;
848
323MODULE = IO::AIO PACKAGE = IO::AIO 849MODULE = IO::AIO PACKAGE = IO::AIO
324 850
325PROTOTYPES: ENABLE 851PROTOTYPES: ENABLE
326 852
327BOOT: 853BOOT:
328{ 854{
329 if (pipe (respipe)) 855 static const struct {
330 croak ("unable to initialize result pipe"); 856 const char *name;
857 IV iv;
858 } *civ, const_iv[] = {
859# define const_niv(name, value) { # name, (IV) value },
860# define const_iv(name) { # name, (IV) name },
861# define const_eio(name) { # name, (IV) EIO_ ## name },
331 862
332 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 863 /* you have to re-run ./gendef0 after adding/Removing any constants here */
333 croak ("cannot set result pipe to nonblocking mode");
334 864
335 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 865 const_iv (ENOSYS)
336 croak ("cannot set result pipe to nonblocking mode"); 866 const_iv (EXDEV)
337} 867 const_iv (EBADR)
338 868
869 const_iv (O_RDONLY)
870 const_iv (O_WRONLY)
871 const_iv (O_RDWR)
872 const_iv (O_CREAT)
873 const_iv (O_TRUNC)
874 const_iv (O_EXCL)
875 const_iv (O_APPEND)
876
877 const_iv (O_ASYNC)
878 const_iv (O_DIRECT)
879 const_iv (O_NOATIME)
880
881 const_iv (O_CLOEXEC)
882 const_iv (O_NOCTTY)
883 const_iv (O_NOFOLLOW)
884 const_iv (O_NONBLOCK)
885 const_iv (O_EXEC)
886 const_iv (O_SEARCH)
887 const_iv (O_DIRECTORY)
888 const_iv (O_DSYNC)
889 const_iv (O_RSYNC)
890 const_iv (O_SYNC)
891 const_iv (O_TTY_INIT)
892
893 const_iv (S_IFIFO)
894 const_iv (S_IFCHR)
895 const_iv (S_IFBLK)
896 const_iv (S_IFLNK)
897 const_iv (S_IFREG)
898 const_iv (S_IFDIR)
899 const_iv (S_IFWHT)
900 const_iv (S_IFSOCK)
901 const_iv (S_IFMT)
902
903 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
904 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
905 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
906 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
907 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
908 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
909
910 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
911 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
912 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
913 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
914 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
915
916 const_iv (ST_RDONLY)
917 const_iv (ST_NOSUID)
918 const_iv (ST_NODEV)
919 const_iv (ST_NOEXEC)
920 const_iv (ST_SYNCHRONOUS)
921 const_iv (ST_MANDLOCK)
922 const_iv (ST_WRITE)
923 const_iv (ST_APPEND)
924 const_iv (ST_IMMUTABLE)
925 const_iv (ST_NOATIME)
926 const_iv (ST_NODIRATIME)
927 const_iv (ST_RELATIME)
928
929 const_iv (PROT_NONE)
930 const_iv (PROT_EXEC)
931 const_iv (PROT_READ)
932 const_iv (PROT_WRITE)
933
934 /*const_iv (MAP_FIXED)*/
935 const_iv (MAP_PRIVATE)
936 const_iv (MAP_SHARED)
937 const_iv (MAP_ANONYMOUS)
938
939 /* linuxish */
940 const_iv (MAP_HUGETLB)
941 const_iv (MAP_LOCKED)
942 const_iv (MAP_NORESERVE)
943 const_iv (MAP_POPULATE)
944 const_iv (MAP_NONBLOCK)
945
946 const_iv (FIEMAP_FLAG_SYNC)
947 const_iv (FIEMAP_FLAG_XATTR)
948 const_iv (FIEMAP_FLAGS_COMPAT)
949 const_iv (FIEMAP_EXTENT_LAST)
950 const_iv (FIEMAP_EXTENT_UNKNOWN)
951 const_iv (FIEMAP_EXTENT_DELALLOC)
952 const_iv (FIEMAP_EXTENT_ENCODED)
953 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
954 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
955 const_iv (FIEMAP_EXTENT_DATA_INLINE)
956 const_iv (FIEMAP_EXTENT_DATA_TAIL)
957 const_iv (FIEMAP_EXTENT_UNWRITTEN)
958 const_iv (FIEMAP_EXTENT_MERGED)
959 const_iv (FIEMAP_EXTENT_SHARED)
960
961 const_eio (SEEK_SET)
962 const_eio (SEEK_CUR)
963 const_eio (SEEK_END)
964
965 const_eio (MCL_FUTURE)
966 const_eio (MCL_CURRENT)
967
968 const_eio (MS_ASYNC)
969 const_eio (MS_INVALIDATE)
970 const_eio (MS_SYNC)
971
972 const_eio (MT_MODIFY)
973
974 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
975 const_eio (SYNC_FILE_RANGE_WRITE)
976 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
977
978 const_eio (FALLOC_FL_KEEP_SIZE)
979
980 const_eio (READDIR_DENTS)
981 const_eio (READDIR_DIRS_FIRST)
982 const_eio (READDIR_STAT_ORDER)
983 const_eio (READDIR_FOUND_UNKNOWN)
984
985 const_eio (DT_UNKNOWN)
986 const_eio (DT_FIFO)
987 const_eio (DT_CHR)
988 const_eio (DT_DIR)
989 const_eio (DT_BLK)
990 const_eio (DT_REG)
991 const_eio (DT_LNK)
992 const_eio (DT_SOCK)
993 const_eio (DT_WHT)
994 };
995
996 aio_stash = gv_stashpv ("IO::AIO" , 1);
997 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
998 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
999 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1000
1001 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1002 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1003
1004 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1005
1006 reinit ();
1007}
1008
339void 1009void
340min_parallel(nthreads) 1010reinit ()
341 int nthreads 1011 PROTOTYPE:
1012
1013void
1014max_poll_reqs (unsigned int nreqs)
342 PROTOTYPE: $ 1015 PROTOTYPE: $
343 CODE: 1016 CODE:
344 while (nthreads > started) 1017 eio_set_max_poll_reqs (nreqs);
345 start_thread ();
346 1018
347void 1019void
348max_parallel(nthreads) 1020max_poll_time (double nseconds)
349 int nthreads
350 PROTOTYPE: $ 1021 PROTOTYPE: $
351 CODE: 1022 CODE:
1023 eio_set_max_poll_time (nseconds);
1024
1025void
1026min_parallel (unsigned int nthreads)
1027 PROTOTYPE: $
1028 CODE:
1029 eio_set_min_parallel (nthreads);
1030
1031void
1032max_parallel (unsigned int nthreads)
1033 PROTOTYPE: $
1034 CODE:
1035 eio_set_max_parallel (nthreads);
1036
1037void
1038max_idle (unsigned int nthreads)
1039 PROTOTYPE: $
1040 CODE:
1041 eio_set_max_idle (nthreads);
1042
1043void
1044idle_timeout (unsigned int seconds)
1045 PROTOTYPE: $
1046 CODE:
1047 eio_set_idle_timeout (seconds);
1048
1049void
1050max_outstanding (unsigned int maxreqs)
1051 PROTOTYPE: $
1052 CODE:
1053 max_outstanding = maxreqs;
1054
1055void
1056aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1057 PPCODE:
352{ 1058{
353 int cur = started; 1059 dREQ;
354 while (cur > nthreads) 1060
355 { 1061 req->type = EIO_WD_OPEN;
356 end_thread (); 1062 req_set_path1 (req, pathname);
1063
1064 REQ_SEND;
1065}
1066
1067void
1068aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1069 PPCODE:
1070{
1071 dREQ;
1072
1073 req->type = EIO_OPEN;
1074 req_set_path1 (req, pathname);
1075 req->int1 = flags;
1076 req->int2 = mode;
1077
1078 REQ_SEND;
1079}
1080
1081void
1082aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1083 ALIAS:
1084 aio_fsync = EIO_FSYNC
1085 aio_fdatasync = EIO_FDATASYNC
1086 aio_syncfs = EIO_SYNCFS
1087 PPCODE:
1088{
1089 int fd = s_fileno_croak (fh, 0);
1090 dREQ;
1091
1092 req->type = ix;
1093 req->sv1 = newSVsv (fh);
1094 req->int1 = fd;
1095
1096 REQ_SEND;
1097}
1098
1099void
1100aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1101 PPCODE:
1102{
1103 int fd = s_fileno_croak (fh, 0);
1104 dREQ;
1105
1106 req->type = EIO_SYNC_FILE_RANGE;
1107 req->sv1 = newSVsv (fh);
1108 req->int1 = fd;
1109 req->offs = offset;
1110 req->size = nbytes;
1111 req->int2 = flags;
1112
1113 REQ_SEND;
1114}
1115
1116void
1117aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1118 PPCODE:
1119{
1120 int fd = s_fileno_croak (fh, 0);
1121 dREQ;
1122
1123 req->type = EIO_FALLOCATE;
1124 req->sv1 = newSVsv (fh);
1125 req->int1 = fd;
1126 req->int2 = mode;
1127 req->offs = offset;
1128 req->size = len;
1129
1130 REQ_SEND;
1131}
1132
1133void
1134aio_close (SV *fh, SV *callback=&PL_sv_undef)
1135 PPCODE:
1136{
1137 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1138 int fd = s_fileno_croak (fh, 0);
1139 dREQ;
1140
1141 if (expect_false (close_fd < 0))
1142 {
1143 int pipefd [2];
1144
1145 if (
1146#ifdef _WIN32
1147 _pipe (pipefd, 1, _O_BINARY) < 0
1148#else
1149 pipe (pipefd) < 0
1150 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1151#endif
1152 || close (pipefd [1]) < 0
357 cur--; 1153 )
1154 abort (); /*D*/
1155
1156 close_fd = pipefd [0];
358 } 1157 }
359 1158
360 while (started > nthreads) 1159 req->type = EIO_DUP2;
1160 req->int1 = close_fd;
1161 req->sv2 = newSVsv (fh);
1162 req->int2 = fd;
1163
1164 REQ_SEND;
1165}
1166
1167void
1168aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1169 PPCODE:
1170{
1171 int fd = s_fileno_croak (fh, 0);
1172 dREQ;
1173
1174 req->type = EIO_SEEK;
1175 req->sv1 = newSVsv (fh);
1176 req->int1 = fd;
1177 req->offs = SvVAL64 (offset);
1178 req->int2 = whence;
1179
1180 REQ_SEND;
1181}
1182
1183void
1184aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1185 ALIAS:
1186 aio_read = EIO_READ
1187 aio_write = EIO_WRITE
1188 PPCODE:
1189{
1190 STRLEN svlen;
1191 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1192 char *svptr = SvPVbyte (data, svlen);
1193 UV len = SvUV (length);
1194
1195 if (dataoffset < 0)
1196 dataoffset += svlen;
1197
1198 if (dataoffset < 0 || dataoffset > svlen)
1199 croak ("dataoffset outside of data scalar");
1200
1201 if (ix == EIO_WRITE)
1202 {
1203 /* write: check length and adjust. */
1204 if (!SvOK (length) || len + dataoffset > svlen)
1205 len = svlen - dataoffset;
1206 }
1207 else
1208 {
1209 /* read: check type and grow scalar as necessary */
1210 SvUPGRADE (data, SVt_PV);
1211 svptr = SvGROW (data, len + dataoffset + 1);
1212 }
1213
1214 {
1215 dREQ;
1216
1217 req->type = ix;
1218 req->sv1 = newSVsv (fh);
1219 req->int1 = fd;
1220 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1221 req->size = len;
1222 req->sv2 = SvREFCNT_inc (data);
1223 req->ptr2 = (char *)svptr + dataoffset;
1224 req->stroffset = dataoffset;
1225
1226 if (!SvREADONLY (data))
1227 {
1228 SvREADONLY_on (data);
1229 req->flags |= FLAG_SV2_RO_OFF;
1230 }
1231
1232 REQ_SEND;
1233 }
1234}
1235
1236void
1237aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1238 ALIAS:
1239 aio_readlink = EIO_READLINK
1240 aio_realpath = EIO_REALPATH
1241 PPCODE:
1242{
1243 dREQ;
1244
1245 req->type = ix;
1246 req_set_path1 (req, pathname);
1247
1248 REQ_SEND;
1249}
1250
1251void
1252aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1253 PPCODE:
1254{
1255 int ifd = s_fileno_croak (in_fh , 0);
1256 int ofd = s_fileno_croak (out_fh, 1);
1257 dREQ;
1258
1259 req->type = EIO_SENDFILE;
1260 req->sv1 = newSVsv (out_fh);
1261 req->int1 = ofd;
1262 req->sv2 = newSVsv (in_fh);
1263 req->int2 = ifd;
1264 req->offs = in_offset;
1265 req->size = length;
1266
1267 REQ_SEND;
1268}
1269
1270void
1271aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1272 PPCODE:
1273{
1274 int fd = s_fileno_croak (fh, 0);
1275 dREQ;
1276
1277 req->type = EIO_READAHEAD;
1278 req->sv1 = newSVsv (fh);
1279 req->int1 = fd;
1280 req->offs = offset;
1281 req->size = length;
1282
1283 REQ_SEND;
1284}
1285
1286void
1287aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1288 ALIAS:
1289 aio_stat = EIO_STAT
1290 aio_lstat = EIO_LSTAT
1291 aio_statvfs = EIO_STATVFS
1292 PPCODE:
1293{
1294 dREQ;
1295
1296 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1297
1298 REQ_SEND;
1299}
1300
1301UV
1302major (UV dev)
1303 ALIAS:
1304 minor = 1
1305 CODE:
1306 RETVAL = ix ? major (dev) : minor (dev);
1307 OUTPUT:
1308 RETVAL
1309
1310UV
1311makedev (UV maj, UV min)
1312 CODE:
1313 RETVAL = makedev (maj, min);
1314 OUTPUT:
1315 RETVAL
1316
1317void
1318aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1319 PPCODE:
1320{
1321 dREQ;
1322
1323 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1324 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1325 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1326
1327 REQ_SEND;
1328}
1329
1330void
1331aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1332 PPCODE:
1333{
1334 dREQ;
1335
1336 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1337 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1338
1339 REQ_SEND;
1340}
1341
1342void
1343aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1344 PPCODE:
1345{
1346 dREQ;
1347
1348 req->int2 = mode;
1349 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1350
1351 REQ_SEND;
1352}
1353
1354void
1355aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1356 PPCODE:
1357{
1358 dREQ;
1359
1360 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1361 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1362 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1363
1364 REQ_SEND;
1365}
1366
1367void
1368aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1369 PPCODE:
1370{
1371 dREQ;
1372
1373 req->type = EIO_READDIR;
1374 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1375
1376 if (flags & EIO_READDIR_DENTS)
1377 req->int1 |= EIO_READDIR_CUSTOM2;
1378
1379 req_set_path1 (req, pathname);
1380
1381 REQ_SEND;
1382}
1383
1384void
1385aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1386 PPCODE:
1387{
1388 dREQ;
1389
1390 req->type = EIO_MKDIR;
1391 req->int2 = mode;
1392 req_set_path1 (req, pathname);
1393
1394 REQ_SEND;
1395}
1396
1397void
1398aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1399 ALIAS:
1400 aio_unlink = EIO_UNLINK
1401 aio_rmdir = EIO_RMDIR
1402 aio_readdir = EIO_READDIR
1403 PPCODE:
1404{
1405 dREQ;
1406
1407 req->type = ix;
1408 req_set_path1 (req, pathname);
1409
1410 REQ_SEND;
1411}
1412
1413void
1414aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1415 ALIAS:
1416 aio_link = EIO_LINK
1417 aio_symlink = EIO_SYMLINK
1418 aio_rename = EIO_RENAME
1419 PPCODE:
1420{
1421 eio_wd wd2 = 0;
1422 dREQ;
1423
1424 req->type = ix;
1425 req_set_path1 (req, oldpath);
1426 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1427 req->int3 = (long)wd2;
1428
1429 REQ_SEND;
1430}
1431
1432void
1433aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1434 PPCODE:
1435{
1436 dREQ;
1437
1438 req->type = EIO_MKNOD;
1439 req->int2 = (mode_t)mode;
1440 req->offs = dev;
1441 req_set_path1 (req, pathname);
1442
1443 REQ_SEND;
1444}
1445
1446void
1447aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1448 ALIAS:
1449 aio_mtouch = EIO_MTOUCH
1450 aio_msync = EIO_MSYNC
1451 PPCODE:
1452{
1453 STRLEN svlen;
1454 char *svptr = SvPVbyte (data, svlen);
1455 UV len = SvUV (length);
1456
1457 if (offset < 0)
1458 offset += svlen;
1459
1460 if (offset < 0 || offset > svlen)
1461 croak ("offset outside of scalar");
1462
1463 if (!SvOK (length) || len + offset > svlen)
1464 len = svlen - offset;
1465
1466 {
1467 dREQ;
1468
1469 req->type = ix;
1470 req->sv2 = SvREFCNT_inc (data);
1471 req->ptr2 = (char *)svptr + offset;
1472 req->size = len;
1473 req->int1 = flags;
1474
1475 REQ_SEND;
1476 }
1477}
1478
1479void
1480aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1481 PPCODE:
1482{
1483 STRLEN svlen;
1484 char *svptr = SvPVbyte (data, svlen);
1485 UV len = SvUV (length);
1486
1487 if (offset < 0)
1488 offset += svlen;
1489
1490 if (offset < 0 || offset > svlen)
1491 croak ("offset outside of scalar");
1492
1493 if (!SvOK (length) || len + offset > svlen)
1494 len = svlen - offset;
1495
1496 {
1497 dREQ;
1498
1499 req->type = EIO_MLOCK;
1500 req->sv2 = SvREFCNT_inc (data);
1501 req->ptr2 = (char *)svptr + offset;
1502 req->size = len;
1503
1504 REQ_SEND;
1505 }
1506}
1507
1508void
1509aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1510 PPCODE:
1511{
1512 dREQ;
1513
1514 req->type = EIO_MLOCKALL;
1515 req->int1 = flags;
1516
1517 REQ_SEND;
1518}
1519
1520void
1521aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1522 PPCODE:
1523{
1524 int fd = s_fileno_croak (fh, 0);
1525 dREQ;
1526
1527 req->type = EIO_CUSTOM;
1528 req->sv1 = newSVsv (fh);
1529 req->int1 = fd;
1530
1531 req->feed = fiemap;
1532#if HAVE_FIEMAP
1533 /* keep our fingers crossed that the next two types are 64 bit */
1534 req->offs = start;
1535 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1536 req->int2 = flags;
1537 req->int3 = SvOK (count) ? SvIV (count) : -1;
1538#endif
1539
1540 REQ_SEND;
1541}
1542
1543void
1544aio_busy (double delay, SV *callback=&PL_sv_undef)
1545 PPCODE:
1546{
1547 dREQ;
1548
1549 req->type = EIO_BUSY;
1550 req->nv1 = delay < 0. ? 0. : delay;
1551
1552 REQ_SEND;
1553}
1554
1555void
1556aio_group (SV *callback=&PL_sv_undef)
1557 PPCODE:
1558{
1559 dREQ;
1560
1561 req->type = EIO_GROUP;
1562
1563 req_submit (req);
1564 XPUSHs (req_sv (req, aio_grp_stash));
1565}
1566
1567void
1568aio_nop (SV *callback=&PL_sv_undef)
1569 ALIAS:
1570 aio_nop = EIO_NOP
1571 aio_sync = EIO_SYNC
1572 PPCODE:
1573{
1574 dREQ;
1575
1576 req->type = ix;
1577
1578 REQ_SEND;
1579}
1580
1581int
1582aioreq_pri (int pri = 0)
1583 CODE:
1584 RETVAL = next_pri;
1585 if (items > 0)
1586 {
1587 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1588 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1589 next_pri = pri;
1590 }
1591 OUTPUT:
1592 RETVAL
1593
1594void
1595aioreq_nice (int nice = 0)
1596 CODE:
1597 nice = next_pri - nice;
1598 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1599 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1600 next_pri = nice;
1601
1602void
1603flush ()
1604 CODE:
1605 while (eio_nreqs ())
361 { 1606 {
362 poll_wait (); 1607 poll_wait ();
363 poll_cb (); 1608 poll_cb ();
364 } 1609 }
365}
366 1610
367int 1611int
368max_outstanding(nreqs) 1612poll ()
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: $$$;$
382 CODE: 1613 CODE:
383{
384 aio_req req;
385
386 Newz (0, req, 1, aio_cb);
387
388 if (!req)
389 croak ("out of memory during aio_req allocation");
390
391 req->type = REQ_OPEN;
392 req->data = newSVsv (pathname);
393 req->dataptr = SvPV_nolen (req->data);
394 req->fd = flags;
395 req->mode = mode;
396 req->callback = SvREFCNT_inc (callback);
397
398 send_req (req);
399}
400
401void
402aio_close(fh,callback=&PL_sv_undef)
403 SV * fh
404 SV * callback
405 PROTOTYPE: $;$
406 ALIAS:
407 aio_close = REQ_CLOSE
408 aio_fsync = REQ_FSYNC
409 aio_fdatasync = REQ_FDATASYNC
410 CODE:
411{
412 aio_req req;
413
414 Newz (0, req, 1, aio_cb);
415
416 if (!req)
417 croak ("out of memory during aio_req allocation");
418
419 req->type = ix;
420 req->fh = newSVsv (fh);
421 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
422 req->callback = SvREFCNT_inc (callback);
423
424 send_req (req);
425}
426
427void
428aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
429 SV * fh
430 UV offset
431 IV length
432 SV * data
433 IV dataoffset
434 SV * callback
435 ALIAS:
436 aio_read = REQ_READ
437 aio_write = REQ_WRITE
438 PROTOTYPE: $$$$$;$
439 CODE:
440{
441 aio_req req;
442 STRLEN svlen;
443 char *svptr = SvPV (data, svlen);
444
445 SvUPGRADE (data, SVt_PV);
446 SvPOK_on (data);
447
448 if (dataoffset < 0)
449 dataoffset += svlen;
450
451 if (dataoffset < 0 || dataoffset > svlen)
452 croak ("data offset outside of string");
453
454 if (ix == REQ_WRITE)
455 {
456 /* write: check length and adjust. */
457 if (length < 0 || length + dataoffset > svlen)
458 length = svlen - dataoffset;
459 }
460 else
461 {
462 /* read: grow scalar as necessary */
463 svptr = SvGROW (data, length + dataoffset);
464 }
465
466 if (length < 0)
467 croak ("length must not be negative");
468
469 Newz (0, req, 1, aio_cb);
470
471 if (!req)
472 croak ("out of memory during aio_req allocation");
473
474 req->type = ix;
475 req->fh = newSVsv (fh);
476 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
477 : IoOFP (sv_2io (fh)));
478 req->offset = offset;
479 req->length = length;
480 req->data = SvREFCNT_inc (data);
481 req->dataptr = (char *)svptr + dataoffset;
482 req->callback = SvREFCNT_inc (callback);
483
484 send_req (req);
485}
486
487void
488aio_readahead(fh,offset,length,callback=&PL_sv_undef)
489 SV * fh
490 UV offset
491 IV length
492 SV * callback
493 PROTOTYPE: $$$;$
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 (); 1614 poll_wait ();
583 poll_cb (); 1615 RETVAL = poll_cb ();
584 }
585
586void
587poll()
588 PROTOTYPE:
589 CODE:
590 if (nreqs)
591 {
592 poll_wait ();
593 poll_cb ();
594 }
595
596int
597poll_fileno()
598 PROTOTYPE:
599 CODE:
600 RETVAL = respipe [0];
601 OUTPUT: 1616 OUTPUT:
602 RETVAL 1617 RETVAL
603 1618
604int 1619int
1620poll_fileno ()
1621 CODE:
1622 RETVAL = s_epipe_fd (&respipe);
1623 OUTPUT:
1624 RETVAL
1625
1626int
605poll_cb(...) 1627poll_cb (...)
606 PROTOTYPE: 1628 PROTOTYPE:
607 CODE: 1629 CODE:
608 RETVAL = poll_cb (); 1630 RETVAL = poll_cb ();
609 OUTPUT: 1631 OUTPUT:
610 RETVAL 1632 RETVAL
611 1633
612void 1634void
613poll_wait() 1635poll_wait ()
614 PROTOTYPE:
615 CODE: 1636 CODE:
616 if (nreqs)
617 poll_wait (); 1637 poll_wait ();
618 1638
619int 1639int
620nreqs() 1640nreqs ()
621 PROTOTYPE:
622 CODE: 1641 CODE:
623 RETVAL = nreqs; 1642 RETVAL = eio_nreqs ();
624 OUTPUT: 1643 OUTPUT:
625 RETVAL 1644 RETVAL
626 1645
1646int
1647nready ()
1648 CODE:
1649 RETVAL = eio_nready ();
1650 OUTPUT:
1651 RETVAL
1652
1653int
1654npending ()
1655 CODE:
1656 RETVAL = eio_npending ();
1657 OUTPUT:
1658 RETVAL
1659
1660int
1661nthreads ()
1662 CODE:
1663 RETVAL = eio_nthreads ();
1664 OUTPUT:
1665 RETVAL
1666
1667int
1668fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1669 CODE:
1670 RETVAL = posix_fadvise (fh, offset, length, advice);
1671 OUTPUT:
1672 RETVAL
1673
1674IV
1675sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1676 CODE:
1677 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1678 OUTPUT:
1679 RETVAL
1680
1681void
1682mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1683 PPCODE:
1684 sv_unmagic (scalar, MMAP_MAGIC);
1685{
1686 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1687 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1688 if (addr == (void *)-1)
1689 XSRETURN_NO;
1690
1691 sv_force_normal (scalar);
1692
1693 /* we store the length in mg_obj, as namlen is I32 :/ */
1694 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1695 ->mg_obj = (SV *)length;
1696
1697 SvUPGRADE (scalar, SVt_PV); /* nop... */
1698
1699 if (!(prot & PROT_WRITE))
1700 SvREADONLY_on (scalar);
1701
1702 if (SvLEN (scalar))
1703 Safefree (SvPVX (scalar));
1704
1705 SvPVX (scalar) = (char *)addr;
1706 SvCUR_set (scalar, length);
1707 SvLEN_set (scalar, 0);
1708 SvPOK_only (scalar);
1709
1710 XSRETURN_YES;
1711}
1712
1713void
1714munmap (SV *scalar)
1715 CODE:
1716 sv_unmagic (scalar, MMAP_MAGIC);
1717
1718int
1719madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1720 ALIAS:
1721 mprotect = 1
1722 CODE:
1723{
1724 STRLEN svlen;
1725 void *addr = SvPVbyte (scalar, svlen);
1726 size_t len = SvUV (length);
1727
1728 if (offset < 0)
1729 offset += svlen;
1730
1731 if (offset < 0 || offset > svlen)
1732 croak ("offset outside of scalar");
1733
1734 if (!SvOK (length) || len + offset > svlen)
1735 len = svlen - offset;
1736
1737 addr = (void *)(((intptr_t)addr) + offset);
1738 eio_page_align (&addr, &len);
1739
1740 switch (ix)
1741 {
1742 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1743 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1744 }
1745}
1746 OUTPUT:
1747 RETVAL
1748
1749int
1750munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1751 CODE:
1752{
1753 STRLEN svlen;
1754 void *addr = SvPVbyte (scalar, svlen);
1755 size_t len = SvUV (length);
1756
1757 if (offset < 0)
1758 offset += svlen;
1759
1760 if (offset < 0 || offset > svlen)
1761 croak ("offset outside of scalar");
1762
1763 if (!SvOK (length) || len + offset > svlen)
1764 len = svlen - offset;
1765
1766 addr = (void *)(((intptr_t)addr) + offset);
1767 eio_page_align (&addr, &len);
1768#if _POSIX_MEMLOCK_RANGE
1769 RETVAL = munlock (addr, len);
1770#else
1771 RETVAL = ((errno = ENOSYS), -1);
1772#endif
1773}
1774 OUTPUT:
1775 RETVAL
1776
1777int
1778munlockall ()
1779 CODE:
1780#if _POSIX_MEMLOCK
1781 munlockall ();
1782#else
1783 RETVAL = -1;
1784 errno = ENOSYS;
1785#endif
1786 OUTPUT:
1787 RETVAL
1788
1789void _on_next_submit (SV *cb)
1790 CODE:
1791 SvREFCNT_dec (on_next_submit);
1792 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1793
1794PROTOTYPES: DISABLE
1795
1796MODULE = IO::AIO PACKAGE = IO::AIO::WD
1797
1798BOOT:
1799{
1800 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1801 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1802}
1803
1804void
1805DESTROY (SV *self)
1806 CODE:
1807{
1808 aio_wd wd = SvAIO_WD (self);
1809#if HAVE_AT
1810 {
1811 SV *callback = &PL_sv_undef;
1812 dREQ; /* clobbers next_pri :/ */
1813 next_pri = req->pri; /* restore next_pri */
1814 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1815 req->type = EIO_WD_CLOSE;
1816 req->wd = wd;
1817 REQ_SEND;
1818 }
1819#else
1820 eio_wd_close_sync (wd);
1821#endif
1822}
1823
1824MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1825
1826void
1827cancel (aio_req_ornot req)
1828 CODE:
1829 eio_cancel (req);
1830
1831void
1832cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1833 PPCODE:
1834{
1835 if (GIMME_V != G_VOID)
1836 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1837
1838 if (items > 1)
1839 {
1840 SV *cb_cv =get_cb (callback);
1841
1842 SvREFCNT_dec (req->callback);
1843 req->callback = SvREFCNT_inc (cb_cv);
1844 }
1845}
1846
1847MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1848
1849void
1850add (aio_req grp, ...)
1851 PPCODE:
1852{
1853 int i;
1854
1855 if (grp->int1 == 2)
1856 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1857
1858 for (i = 1; i < items; ++i )
1859 {
1860 aio_req req;
1861
1862 if (GIMME_V != G_VOID)
1863 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1864
1865 req = SvAIO_REQ (ST (i));
1866
1867 if (req)
1868 eio_grp_add (grp, req);
1869 }
1870}
1871
1872void
1873cancel_subs (aio_req_ornot req)
1874 CODE:
1875 req_cancel_subs (req);
1876
1877void
1878result (aio_req grp, ...)
1879 CODE:
1880{
1881 int i;
1882 AV *av;
1883
1884 grp->errorno = errno;
1885
1886 av = newAV ();
1887 av_extend (av, items - 1);
1888
1889 for (i = 1; i < items; ++i )
1890 av_push (av, newSVsv (ST (i)));
1891
1892 SvREFCNT_dec (grp->sv1);
1893 grp->sv1 = (SV *)av;
1894}
1895
1896void
1897errno (aio_req grp, int errorno = errno)
1898 CODE:
1899 grp->errorno = errorno;
1900
1901void
1902limit (aio_req grp, int limit)
1903 CODE:
1904 eio_grp_limit (grp, limit);
1905
1906void
1907feed (aio_req grp, SV *callback=&PL_sv_undef)
1908 CODE:
1909{
1910 SvREFCNT_dec (grp->sv2);
1911 grp->sv2 = newSVsv (callback);
1912 grp->feed = aio_grp_feed;
1913
1914 if (grp->int2 <= 0)
1915 grp->int2 = 2;
1916
1917 eio_grp_limit (grp, grp->int2);
1918}
1919

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