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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.21 by root, Sun Aug 7 03:26:10 2005 UTC vs.
Revision 1.215 by root, Sun Jun 17 17:07:25 2012 UTC

1#define _REENTRANT 1 1#include "libeio/xthread.h"
2
2#include <errno.h> 3#include <errno.h>
3 4
4#include "EXTERN.h" 5#include "EXTERN.h"
5#include "perl.h" 6#include "perl.h"
6#include "XSUB.h" 7#include "XSUB.h"
7 8
8#include "autoconf/config.h" 9#include "schmorp.h"
9 10
11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h>
10#include <sys/types.h> 14#include <sys/types.h>
11#include <sys/stat.h> 15#include <sys/stat.h>
12
13#include <unistd.h> 16#include <limits.h>
14#include <fcntl.h> 17#include <fcntl.h>
15#include <signal.h>
16#include <sched.h> 18#include <sched.h>
17 19
18#include <pthread.h> 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
21# include <sys/mman.h>
22#endif
19 23
20typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 24#if __linux__
21typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 25# include <linux/fs.h>
22typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 26# ifdef FS_IOC_FIEMAP
27# include <linux/types.h>
28# include <linux/fiemap.h>
29# define HAVE_FIEMAP 1
30# endif
31#endif
23 32
24#if __ia64 33/* perl namespace pollution */
25# define STACKSIZE 65536 34#undef VERSION
35
36/* perl stupidly overrides readdir and maybe others */
37/* with thread-unsafe versions, imagine that :( */
38#undef readdir
39#undef opendir
40#undef closedir
41
42#ifdef _WIN32
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
26#else 79#else
27# 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 */
28#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/*****************************************************************************/
29 221
30enum { 222enum {
31 REQ_QUIT, 223 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}; 224};
37 225
38typedef struct aio_cb {
39 struct aio_cb *volatile next;
40
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, *fh;
50 void *dataptr;
51 STRLEN dataoffset;
52
53 Stat_t *statdata;
54} aio_cb;
55
56typedef aio_cb *aio_req; 226typedef eio_req *aio_req;
227typedef eio_req *aio_req_ornot;
228typedef eio_wd aio_wd;
57 229
58static int started; 230static SV *on_next_submit;
59static volatile int nreqs; 231static int next_pri = EIO_PRI_DEFAULT;
60static int max_outstanding = 1<<30; 232static int max_outstanding;
61static int respipe [2];
62 233
63static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 234static s_epipe respipe;
64static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
65static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66 235
67static volatile aio_req reqs, reqe; /* queue start, queue end */ 236static void req_destroy (aio_req req);
68static volatile aio_req ress, rese; /* queue start, queue end */ 237static void req_cancel (aio_req req);
69 238
70static void 239static void
71poll_wait () 240want_poll (void)
72{ 241{
73 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)
74 { 258 {
75 fd_set rfd; 259 req->self = (SV *)newHV ();
76 FD_ZERO(&rfd); 260 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
77 FD_SET(respipe [0], &rfd);
78
79 select (respipe [0] + 1, &rfd, 0, 0, 0);
80 } 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 }
81} 335}
82 336
83static int 337static int
84poll_cb () 338req_invoke (eio_req *req)
85{ 339{
86 dSP; 340 if (req->flags & FLAG_SV2_RO_OFF)
87 int count = 0; 341 SvREADONLY_off (req->sv2);
88 aio_req req, prv;
89 342
90 pthread_mutex_lock (&reslock); 343 if (!EIO_CANCELLED (req) && req->callback)
91
92 {
93 /* read any signals sent by the worker threads */
94 char buf [32];
95 while (read (respipe [0], buf, 32) > 0)
96 ;
97 }
98
99 req = ress;
100 ress = rese = 0;
101
102 pthread_mutex_unlock (&reslock);
103
104 while (req)
105 { 344 {
106 nreqs--; 345 dSP;
346 static SV *sv_result_cache; /* caches the result integer SV */
347 SV *sv_result;
107 348
108 if (req->type == REQ_QUIT) 349 ENTER;
109 started--; 350 SAVETMPS;
110 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))
111 { 356 {
112 int errorno = errno; 357 sv_result = sv_result_cache; sv_result_cache = 0;
113 errno = req->errorno; 358 SvIV_set (sv_result, req->result);
114 359 SvIOK_only (sv_result);
115 if (req->type == REQ_READ)
116 SvCUR_set (req->data, req->dataoffset
117 + req->result > 0 ? req->result : 0);
118
119 if (req->data)
120 SvREFCNT_dec (req->data);
121
122 if (req->fh)
123 SvREFCNT_dec (req->fh);
124
125 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
126 {
127 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
128 PL_laststatval = req->result;
129 PL_statcache = *(req->statdata);
130
131 Safefree (req->statdata);
132 }
133
134 ENTER;
135 PUSHMARK (SP);
136 XPUSHs (sv_2mortal (newSViv (req->result)));
137
138 if (req->type == REQ_OPEN)
139 {
140 /* convert fd to fh */
141 SV *fh;
142
143 PUTBACK;
144 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
145 SPAGAIN;
146
147 fh = SvREFCNT_inc (POPs);
148
149 PUSHMARK (SP);
150 XPUSHs (sv_2mortal (fh));
151 }
152
153 if (SvOK (req->callback))
154 {
155 PUTBACK;
156 call_sv (req->callback, G_VOID | G_EVAL);
157 SPAGAIN;
158 }
159
160 LEAVE;
161
162 if (req->callback)
163 SvREFCNT_dec (req->callback);
164
165 errno = errorno;
166 count++;
167 }
168
169 prv = req;
170 req = req->next;
171 Safefree (prv);
172
173 /* TODO: croak on errors? */
174 }
175
176 return count;
177}
178
179static void *aio_proc(void *arg);
180
181static void
182start_thread (void)
183{
184 sigset_t fullsigset, oldsigset;
185 pthread_t tid;
186 pthread_attr_t attr;
187
188 pthread_attr_init (&attr);
189 pthread_attr_setstacksize (&attr, STACKSIZE);
190 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
191
192 sigfillset (&fullsigset);
193 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
194
195 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
196 started++;
197
198 sigprocmask (SIG_SETMASK, &oldsigset, 0);
199}
200
201static void
202send_req (aio_req req)
203{
204 nreqs++;
205
206 pthread_mutex_lock (&reqlock);
207
208 req->next = 0;
209
210 if (reqe)
211 {
212 reqe->next = req;
213 reqe = req;
214 }
215 else
216 reqe = reqs = req;
217
218 pthread_cond_signal (&reqwait);
219 pthread_mutex_unlock (&reqlock);
220
221 while (nreqs > max_outstanding)
222 {
223 poll_wait ();
224 poll_cb ();
225 }
226}
227
228static void
229end_thread (void)
230{
231 aio_req req;
232 New (0, req, 1, aio_cb);
233 req->type = REQ_QUIT;
234
235 send_req (req);
236}
237
238/* work around various missing functions */
239
240#if !HAVE_PREADWRITE
241# define pread aio_pread
242# define pwrite aio_pwrite
243
244/*
245 * make our pread/pwrite safe against themselves, but not against
246 * normal read/write by using a mutex. slows down execution a lot,
247 * but that's your problem, not mine.
248 */
249static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
250
251static ssize_t
252pread (int fd, void *buf, size_t count, off_t offset)
253{
254 ssize_t res;
255 off_t ooffset;
256
257 pthread_mutex_lock (&iolock);
258 ooffset = lseek (fd, 0, SEEK_CUR);
259 lseek (fd, offset, SEEK_SET);
260 res = read (fd, buf, count);
261 lseek (fd, ooffset, SEEK_SET);
262 pthread_mutex_unlock (&iolock);
263
264 return res;
265}
266
267static ssize_t
268pwrite (int fd, void *buf, size_t count, off_t offset)
269{
270 ssize_t res;
271 off_t ooffset;
272
273 pthread_mutex_lock (&iolock);
274 ooffset = lseek (fd, 0, SEEK_CUR);
275 lseek (fd, offset, SEEK_SET);
276 res = write (fd, buf, count);
277 lseek (fd, offset, SEEK_SET);
278 pthread_mutex_unlock (&iolock);
279
280 return res;
281}
282#endif
283
284#if !HAVE_FDATASYNC
285# define fdatasync fsync
286#endif
287
288#if !HAVE_READAHEAD
289# define readahead aio_readahead
290
291static char readahead_buf[4096];
292
293static ssize_t
294readahead (int fd, off_t offset, size_t count)
295{
296 while (count > 0)
297 {
298 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
299
300 pread (fd, readahead_buf, len, offset);
301 offset += len;
302 count -= len;
303 }
304
305 errno = 0;
306}
307#endif
308
309static void *
310aio_proc (void *thr_arg)
311{
312 aio_req req;
313 int type;
314
315 do
316 {
317 pthread_mutex_lock (&reqlock);
318
319 for (;;)
320 {
321 req = reqs;
322
323 if (reqs)
324 {
325 reqs = reqs->next;
326 if (!reqs) reqe = 0;
327 }
328
329 if (req)
330 break;
331
332 pthread_cond_wait (&reqwait, &reqlock);
333 }
334
335 pthread_mutex_unlock (&reqlock);
336
337 errno = 0; /* strictly unnecessary */
338
339 type = req->type;
340
341 switch (type)
342 {
343 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
344 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
345
346 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
347
348 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
349 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
350 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
351
352 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
353 case REQ_CLOSE: req->result = close (req->fd); break;
354 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
355
356 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
357 case REQ_FSYNC: req->result = fsync (req->fd); break;
358
359 case REQ_QUIT:
360 break;
361
362 default:
363 req->result = ENOSYS;
364 break;
365 }
366
367 req->errorno = errno;
368
369 pthread_mutex_lock (&reslock);
370
371 req->next = 0;
372
373 if (rese)
374 {
375 rese->next = req;
376 rese = req;
377 } 360 }
378 else 361 else
379 { 362 {
380 rese = ress = req; 363 sv_result = newSViv (req->result);
381 364 SvREADONLY_on (sv_result);
382 /* write a dummy byte to the pipe so fh becomes ready */
383 write (respipe [1], &respipe, 1);
384 } 365 }
385 366
386 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;
387 } 612 }
388 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) EIO_ENOSYS ()
704# define munmap(addr,length) EIO_ENOSYS ()
705#endif
706
707#if !_POSIX_MEMORY_PROTECTION
708# define mprotect(addr,len,prot) EIO_ENOSYS ()
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);
389 735
390 return 0; 736 return 0;
391} 737}
392 738
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
393MODULE = IO::AIO PACKAGE = IO::AIO 849MODULE = IO::AIO PACKAGE = IO::AIO
394 850
395PROTOTYPES: ENABLE 851PROTOTYPES: ENABLE
396 852
397BOOT: 853BOOT:
398{ 854{
399 if (pipe (respipe)) 855 static const struct {
400 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 },
401 862
402 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 863 /* you have to re-run ./gendef0 after adding/Removing any constants here */
403 croak ("cannot set result pipe to nonblocking mode");
404 864
405 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 865 const_iv (ENOSYS)
406 croak ("cannot set result pipe to nonblocking mode"); 866 const_iv (EXDEV)
407} 867 const_iv (EBADR)
408 868
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_iv (SPLICE_F_MOVE)
962 const_iv (SPLICE_F_NONBLOCK)
963 const_iv (SPLICE_F_MORE)
964 const_iv (SPLICE_F_GIFT)
965
966 const_iv (SEEK_DATA)
967 const_iv (SEEK_HOLE)
968
969 /* libeio constants */
970 const_eio (SEEK_SET)
971 const_eio (SEEK_CUR)
972 const_eio (SEEK_END)
973
974 const_eio (MCL_FUTURE)
975 const_eio (MCL_CURRENT)
976
977 const_eio (MS_ASYNC)
978 const_eio (MS_INVALIDATE)
979 const_eio (MS_SYNC)
980
981 const_eio (MT_MODIFY)
982
983 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
984 const_eio (SYNC_FILE_RANGE_WRITE)
985 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
986
987 const_eio (FALLOC_FL_KEEP_SIZE)
988
989 const_eio (READDIR_DENTS)
990 const_eio (READDIR_DIRS_FIRST)
991 const_eio (READDIR_STAT_ORDER)
992 const_eio (READDIR_FOUND_UNKNOWN)
993
994 const_eio (DT_UNKNOWN)
995 const_eio (DT_FIFO)
996 const_eio (DT_CHR)
997 const_eio (DT_DIR)
998 const_eio (DT_BLK)
999 const_eio (DT_REG)
1000 const_eio (DT_LNK)
1001 const_eio (DT_SOCK)
1002 const_eio (DT_WHT)
1003 };
1004
1005 aio_stash = gv_stashpv ("IO::AIO" , 1);
1006 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1007 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1008 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1009
1010 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1011 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1012
1013 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1014
1015 reinit ();
1016}
1017
409void 1018void
410min_parallel(nthreads) 1019reinit ()
411 int nthreads 1020 PROTOTYPE:
1021
1022void
1023max_poll_reqs (unsigned int nreqs)
412 PROTOTYPE: $ 1024 PROTOTYPE: $
413 CODE: 1025 CODE:
414 while (nthreads > started) 1026 eio_set_max_poll_reqs (nreqs);
415 start_thread ();
416 1027
417void 1028void
418max_parallel(nthreads) 1029max_poll_time (double nseconds)
419 int nthreads
420 PROTOTYPE: $ 1030 PROTOTYPE: $
421 CODE: 1031 CODE:
1032 eio_set_max_poll_time (nseconds);
1033
1034void
1035min_parallel (unsigned int nthreads)
1036 PROTOTYPE: $
1037 CODE:
1038 eio_set_min_parallel (nthreads);
1039
1040void
1041max_parallel (unsigned int nthreads)
1042 PROTOTYPE: $
1043 CODE:
1044 eio_set_max_parallel (nthreads);
1045
1046void
1047max_idle (unsigned int nthreads)
1048 PROTOTYPE: $
1049 CODE:
1050 eio_set_max_idle (nthreads);
1051
1052void
1053idle_timeout (unsigned int seconds)
1054 PROTOTYPE: $
1055 CODE:
1056 eio_set_idle_timeout (seconds);
1057
1058void
1059max_outstanding (unsigned int maxreqs)
1060 PROTOTYPE: $
1061 CODE:
1062 max_outstanding = maxreqs;
1063
1064void
1065aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1066 PPCODE:
422{ 1067{
423 int cur = started; 1068 dREQ;
424 while (cur > nthreads) 1069
425 { 1070 req->type = EIO_WD_OPEN;
426 end_thread (); 1071 req_set_path1 (req, pathname);
1072
1073 REQ_SEND;
1074}
1075
1076void
1077aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1078 PPCODE:
1079{
1080 dREQ;
1081
1082 req->type = EIO_OPEN;
1083 req_set_path1 (req, pathname);
1084 req->int1 = flags;
1085 req->int2 = mode;
1086
1087 REQ_SEND;
1088}
1089
1090void
1091aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1092 ALIAS:
1093 aio_fsync = EIO_FSYNC
1094 aio_fdatasync = EIO_FDATASYNC
1095 aio_syncfs = EIO_SYNCFS
1096 PPCODE:
1097{
1098 int fd = s_fileno_croak (fh, 0);
1099 dREQ;
1100
1101 req->type = ix;
1102 req->sv1 = newSVsv (fh);
1103 req->int1 = fd;
1104
1105 REQ_SEND;
1106}
1107
1108void
1109aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1110 PPCODE:
1111{
1112 int fd = s_fileno_croak (fh, 0);
1113 dREQ;
1114
1115 req->type = EIO_SYNC_FILE_RANGE;
1116 req->sv1 = newSVsv (fh);
1117 req->int1 = fd;
1118 req->offs = offset;
1119 req->size = nbytes;
1120 req->int2 = flags;
1121
1122 REQ_SEND;
1123}
1124
1125void
1126aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1127 PPCODE:
1128{
1129 int fd = s_fileno_croak (fh, 0);
1130 dREQ;
1131
1132 req->type = EIO_FALLOCATE;
1133 req->sv1 = newSVsv (fh);
1134 req->int1 = fd;
1135 req->int2 = mode;
1136 req->offs = offset;
1137 req->size = len;
1138
1139 REQ_SEND;
1140}
1141
1142void
1143aio_close (SV *fh, SV *callback=&PL_sv_undef)
1144 PPCODE:
1145{
1146 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1147 int fd = s_fileno_croak (fh, 0);
1148 dREQ;
1149
1150 if (expect_false (close_fd < 0))
1151 {
1152 int pipefd [2];
1153
1154 if (
1155#ifdef _WIN32
1156 _pipe (pipefd, 1, _O_BINARY) < 0
1157#else
1158 pipe (pipefd) < 0
1159 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1160#endif
1161 || close (pipefd [1]) < 0
427 cur--; 1162 )
1163 abort (); /*D*/
1164
1165 close_fd = pipefd [0];
428 } 1166 }
429 1167
430 while (started > nthreads) 1168 req->type = EIO_DUP2;
1169 req->int1 = close_fd;
1170 req->sv2 = newSVsv (fh);
1171 req->int2 = fd;
1172
1173 REQ_SEND;
1174}
1175
1176void
1177aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1178 PPCODE:
1179{
1180 int fd = s_fileno_croak (fh, 0);
1181 dREQ;
1182
1183 req->type = EIO_SEEK;
1184 req->sv1 = newSVsv (fh);
1185 req->int1 = fd;
1186 req->offs = SvVAL64 (offset);
1187 req->int2 = whence;
1188
1189 REQ_SEND;
1190}
1191
1192void
1193aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1194 ALIAS:
1195 aio_read = EIO_READ
1196 aio_write = EIO_WRITE
1197 PPCODE:
1198{
1199 STRLEN svlen;
1200 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1201 char *svptr = SvPVbyte (data, svlen);
1202 UV len = SvUV (length);
1203
1204 if (dataoffset < 0)
1205 dataoffset += svlen;
1206
1207 if (dataoffset < 0 || dataoffset > svlen)
1208 croak ("dataoffset outside of data scalar");
1209
1210 if (ix == EIO_WRITE)
1211 {
1212 /* write: check length and adjust. */
1213 if (!SvOK (length) || len + dataoffset > svlen)
1214 len = svlen - dataoffset;
1215 }
1216 else
1217 {
1218 /* read: check type and grow scalar as necessary */
1219 SvUPGRADE (data, SVt_PV);
1220 if (SvLEN (data) >= SvCUR (data))
1221 svptr = SvGROW (data, len + dataoffset + 1);
1222 else if (SvCUR (data) < len + dataoffset)
1223 croak ("length + dataoffset outside of scalar, and cannot grow");
1224 }
1225
1226 {
1227 dREQ;
1228
1229 req->type = ix;
1230 req->sv1 = newSVsv (fh);
1231 req->int1 = fd;
1232 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1233 req->size = len;
1234 req->sv2 = SvREFCNT_inc (data);
1235 req->ptr2 = (char *)svptr + dataoffset;
1236 req->stroffset = dataoffset;
1237
1238 if (!SvREADONLY (data))
1239 {
1240 SvREADONLY_on (data);
1241 req->flags |= FLAG_SV2_RO_OFF;
1242 }
1243
1244 REQ_SEND;
1245 }
1246}
1247
1248void
1249aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1250 ALIAS:
1251 aio_readlink = EIO_READLINK
1252 aio_realpath = EIO_REALPATH
1253 PPCODE:
1254{
1255 dREQ;
1256
1257 req->type = ix;
1258 req_set_path1 (req, pathname);
1259
1260 REQ_SEND;
1261}
1262
1263void
1264aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1265 PPCODE:
1266{
1267 int ifd = s_fileno_croak (in_fh , 0);
1268 int ofd = s_fileno_croak (out_fh, 1);
1269 dREQ;
1270
1271 req->type = EIO_SENDFILE;
1272 req->sv1 = newSVsv (out_fh);
1273 req->int1 = ofd;
1274 req->sv2 = newSVsv (in_fh);
1275 req->int2 = ifd;
1276 req->offs = in_offset;
1277 req->size = length;
1278
1279 REQ_SEND;
1280}
1281
1282void
1283aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1284 PPCODE:
1285{
1286 int fd = s_fileno_croak (fh, 0);
1287 dREQ;
1288
1289 req->type = EIO_READAHEAD;
1290 req->sv1 = newSVsv (fh);
1291 req->int1 = fd;
1292 req->offs = offset;
1293 req->size = length;
1294
1295 REQ_SEND;
1296}
1297
1298void
1299aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1300 ALIAS:
1301 aio_stat = EIO_STAT
1302 aio_lstat = EIO_LSTAT
1303 aio_statvfs = EIO_STATVFS
1304 PPCODE:
1305{
1306 dREQ;
1307
1308 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1309
1310 REQ_SEND;
1311}
1312
1313UV
1314major (UV dev)
1315 ALIAS:
1316 minor = 1
1317 CODE:
1318 RETVAL = ix ? major (dev) : minor (dev);
1319 OUTPUT:
1320 RETVAL
1321
1322UV
1323makedev (UV maj, UV min)
1324 CODE:
1325 RETVAL = makedev (maj, min);
1326 OUTPUT:
1327 RETVAL
1328
1329void
1330aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1331 PPCODE:
1332{
1333 dREQ;
1334
1335 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1336 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1337 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1338
1339 REQ_SEND;
1340}
1341
1342void
1343aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1344 PPCODE:
1345{
1346 dREQ;
1347
1348 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1349 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1350
1351 REQ_SEND;
1352}
1353
1354void
1355aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1356 PPCODE:
1357{
1358 dREQ;
1359
1360 req->int2 = mode;
1361 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1362
1363 REQ_SEND;
1364}
1365
1366void
1367aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1368 PPCODE:
1369{
1370 dREQ;
1371
1372 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1373 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1374 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1375
1376 REQ_SEND;
1377}
1378
1379void
1380aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1381 PPCODE:
1382{
1383 dREQ;
1384
1385 req->type = EIO_READDIR;
1386 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1387
1388 if (flags & EIO_READDIR_DENTS)
1389 req->int1 |= EIO_READDIR_CUSTOM2;
1390
1391 req_set_path1 (req, pathname);
1392
1393 REQ_SEND;
1394}
1395
1396void
1397aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1398 PPCODE:
1399{
1400 dREQ;
1401
1402 req->type = EIO_MKDIR;
1403 req->int2 = mode;
1404 req_set_path1 (req, pathname);
1405
1406 REQ_SEND;
1407}
1408
1409void
1410aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1411 ALIAS:
1412 aio_unlink = EIO_UNLINK
1413 aio_rmdir = EIO_RMDIR
1414 aio_readdir = EIO_READDIR
1415 PPCODE:
1416{
1417 dREQ;
1418
1419 req->type = ix;
1420 req_set_path1 (req, pathname);
1421
1422 REQ_SEND;
1423}
1424
1425void
1426aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1427 ALIAS:
1428 aio_link = EIO_LINK
1429 aio_symlink = EIO_SYMLINK
1430 aio_rename = EIO_RENAME
1431 PPCODE:
1432{
1433 eio_wd wd2 = 0;
1434 dREQ;
1435
1436 req->type = ix;
1437 req_set_path1 (req, oldpath);
1438 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1439 req->int3 = (long)wd2;
1440
1441 REQ_SEND;
1442}
1443
1444void
1445aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1446 PPCODE:
1447{
1448 dREQ;
1449
1450 req->type = EIO_MKNOD;
1451 req->int2 = (mode_t)mode;
1452 req->offs = dev;
1453 req_set_path1 (req, pathname);
1454
1455 REQ_SEND;
1456}
1457
1458void
1459aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1460 ALIAS:
1461 aio_mtouch = EIO_MTOUCH
1462 aio_msync = EIO_MSYNC
1463 PPCODE:
1464{
1465 STRLEN svlen;
1466 char *svptr = SvPVbyte (data, svlen);
1467 UV len = SvUV (length);
1468
1469 if (offset < 0)
1470 offset += svlen;
1471
1472 if (offset < 0 || offset > svlen)
1473 croak ("offset outside of scalar");
1474
1475 if (!SvOK (length) || len + offset > svlen)
1476 len = svlen - offset;
1477
1478 {
1479 dREQ;
1480
1481 req->type = ix;
1482 req->sv2 = SvREFCNT_inc (data);
1483 req->ptr2 = (char *)svptr + offset;
1484 req->size = len;
1485 req->int1 = flags;
1486
1487 REQ_SEND;
1488 }
1489}
1490
1491void
1492aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1493 PPCODE:
1494{
1495 STRLEN svlen;
1496 char *svptr = SvPVbyte (data, svlen);
1497 UV len = SvUV (length);
1498
1499 if (offset < 0)
1500 offset += svlen;
1501
1502 if (offset < 0 || offset > svlen)
1503 croak ("offset outside of scalar");
1504
1505 if (!SvOK (length) || len + offset > svlen)
1506 len = svlen - offset;
1507
1508 {
1509 dREQ;
1510
1511 req->type = EIO_MLOCK;
1512 req->sv2 = SvREFCNT_inc (data);
1513 req->ptr2 = (char *)svptr + offset;
1514 req->size = len;
1515
1516 REQ_SEND;
1517 }
1518}
1519
1520void
1521aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1522 PPCODE:
1523{
1524 dREQ;
1525
1526 req->type = EIO_MLOCKALL;
1527 req->int1 = flags;
1528
1529 REQ_SEND;
1530}
1531
1532void
1533aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1534 PPCODE:
1535{
1536 int fd = s_fileno_croak (fh, 0);
1537 dREQ;
1538
1539 req->type = EIO_CUSTOM;
1540 req->sv1 = newSVsv (fh);
1541 req->int1 = fd;
1542
1543 req->feed = fiemap;
1544#if HAVE_FIEMAP
1545 /* keep our fingers crossed that the next two types are 64 bit */
1546 req->offs = start;
1547 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1548 req->int2 = flags;
1549 req->int3 = SvOK (count) ? SvIV (count) : -1;
1550#endif
1551
1552 REQ_SEND;
1553}
1554
1555void
1556aio_busy (double delay, SV *callback=&PL_sv_undef)
1557 PPCODE:
1558{
1559 dREQ;
1560
1561 req->type = EIO_BUSY;
1562 req->nv1 = delay < 0. ? 0. : delay;
1563
1564 REQ_SEND;
1565}
1566
1567void
1568aio_group (SV *callback=&PL_sv_undef)
1569 PPCODE:
1570{
1571 dREQ;
1572
1573 req->type = EIO_GROUP;
1574
1575 req_submit (req);
1576 XPUSHs (req_sv (req, aio_grp_stash));
1577}
1578
1579void
1580aio_nop (SV *callback=&PL_sv_undef)
1581 ALIAS:
1582 aio_nop = EIO_NOP
1583 aio_sync = EIO_SYNC
1584 PPCODE:
1585{
1586 dREQ;
1587
1588 req->type = ix;
1589
1590 REQ_SEND;
1591}
1592
1593int
1594aioreq_pri (int pri = 0)
1595 CODE:
1596 RETVAL = next_pri;
1597 if (items > 0)
1598 {
1599 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1600 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1601 next_pri = pri;
1602 }
1603 OUTPUT:
1604 RETVAL
1605
1606void
1607aioreq_nice (int nice = 0)
1608 CODE:
1609 nice = next_pri - nice;
1610 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1611 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1612 next_pri = nice;
1613
1614void
1615flush ()
1616 CODE:
1617 while (eio_nreqs ())
431 { 1618 {
432 poll_wait (); 1619 poll_wait ();
433 poll_cb (); 1620 poll_cb ();
434 } 1621 }
435}
436 1622
437int 1623int
438max_outstanding(nreqs) 1624poll ()
439 int nreqs
440 PROTOTYPE: $
441 CODE:
442 RETVAL = max_outstanding;
443 max_outstanding = nreqs;
444
445void
446aio_open(pathname,flags,mode,callback=&PL_sv_undef)
447 SV * pathname
448 int flags
449 int mode
450 SV * callback
451 PROTOTYPE: $$$;$
452 CODE: 1625 CODE:
453{
454 aio_req req;
455
456 Newz (0, req, 1, aio_cb);
457
458 if (!req)
459 croak ("out of memory during aio_req allocation");
460
461 req->type = REQ_OPEN;
462 req->data = newSVsv (pathname);
463 req->dataptr = SvPV_nolen (req->data);
464 req->fd = flags;
465 req->mode = mode;
466 req->callback = SvREFCNT_inc (callback);
467
468 send_req (req);
469}
470
471void
472aio_close(fh,callback=&PL_sv_undef)
473 SV * fh
474 SV * callback
475 PROTOTYPE: $;$
476 ALIAS:
477 aio_close = REQ_CLOSE
478 aio_fsync = REQ_FSYNC
479 aio_fdatasync = REQ_FDATASYNC
480 CODE:
481{
482 aio_req req;
483
484 Newz (0, req, 1, aio_cb);
485
486 if (!req)
487 croak ("out of memory during aio_req allocation");
488
489 req->type = ix;
490 req->fh = newSVsv (fh);
491 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
492 req->callback = SvREFCNT_inc (callback);
493
494 send_req (req);
495}
496
497void
498aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
499 SV * fh
500 UV offset
501 IV length
502 SV * data
503 IV dataoffset
504 SV * callback
505 ALIAS:
506 aio_read = REQ_READ
507 aio_write = REQ_WRITE
508 PROTOTYPE: $$$$$;$
509 CODE:
510{
511 aio_req req;
512 STRLEN svlen;
513 char *svptr = SvPVbyte (data, svlen);
514
515 SvUPGRADE (data, SVt_PV);
516 SvPOK_on (data);
517
518 if (dataoffset < 0)
519 dataoffset += svlen;
520
521 if (dataoffset < 0 || dataoffset > svlen)
522 croak ("data offset outside of string");
523
524 if (ix == REQ_WRITE)
525 {
526 /* write: check length and adjust. */
527 if (length < 0 || length + dataoffset > svlen)
528 length = svlen - dataoffset;
529 }
530 else
531 {
532 /* read: grow scalar as necessary */
533 svptr = SvGROW (data, length + dataoffset);
534 }
535
536 if (length < 0)
537 croak ("length must not be negative");
538
539 Newz (0, req, 1, aio_cb);
540
541 if (!req)
542 croak ("out of memory during aio_req allocation");
543
544 req->type = ix;
545 req->fh = newSVsv (fh);
546 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
547 : IoOFP (sv_2io (fh)));
548 req->offset = offset;
549 req->length = length;
550 req->data = SvREFCNT_inc (data);
551 req->dataptr = (char *)svptr + dataoffset;
552 req->callback = SvREFCNT_inc (callback);
553
554 send_req (req);
555}
556
557void
558aio_readahead(fh,offset,length,callback=&PL_sv_undef)
559 SV * fh
560 UV offset
561 IV length
562 SV * callback
563 PROTOTYPE: $$$;$
564 CODE:
565{
566 aio_req req;
567
568 if (length < 0)
569 croak ("length must not be negative");
570
571 Newz (0, req, 1, aio_cb);
572
573 if (!req)
574 croak ("out of memory during aio_req allocation");
575
576 req->type = REQ_READAHEAD;
577 req->fh = newSVsv (fh);
578 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
579 req->offset = offset;
580 req->length = length;
581 req->callback = SvREFCNT_inc (callback);
582
583 send_req (req);
584}
585
586void
587aio_stat(fh_or_path,callback=&PL_sv_undef)
588 SV * fh_or_path
589 SV * callback
590 ALIAS:
591 aio_stat = REQ_STAT
592 aio_lstat = REQ_LSTAT
593 CODE:
594{
595 aio_req req;
596
597 Newz (0, req, 1, aio_cb);
598
599 if (!req)
600 croak ("out of memory during aio_req allocation");
601
602 New (0, req->statdata, 1, Stat_t);
603
604 if (!req->statdata)
605 croak ("out of memory during aio_req->statdata allocation");
606
607 if (SvPOK (fh_or_path))
608 {
609 req->type = ix;
610 req->data = newSVsv (fh_or_path);
611 req->dataptr = SvPV_nolen (req->data);
612 }
613 else
614 {
615 req->type = REQ_FSTAT;
616 req->fh = newSVsv (fh_or_path);
617 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
618 }
619
620 req->callback = SvREFCNT_inc (callback);
621
622 send_req (req);
623}
624
625void
626aio_unlink(pathname,callback=&PL_sv_undef)
627 SV * pathname
628 SV * callback
629 CODE:
630{
631 aio_req req;
632
633 Newz (0, req, 1, aio_cb);
634
635 if (!req)
636 croak ("out of memory during aio_req allocation");
637
638 req->type = REQ_UNLINK;
639 req->data = newSVsv (pathname);
640 req->dataptr = SvPV_nolen (req->data);
641 req->callback = SvREFCNT_inc (callback);
642
643 send_req (req);
644}
645
646void
647flush()
648 PROTOTYPE:
649 CODE:
650 while (nreqs)
651 {
652 poll_wait (); 1626 poll_wait ();
653 poll_cb (); 1627 RETVAL = poll_cb ();
654 }
655
656void
657poll()
658 PROTOTYPE:
659 CODE:
660 if (nreqs)
661 {
662 poll_wait ();
663 poll_cb ();
664 }
665
666int
667poll_fileno()
668 PROTOTYPE:
669 CODE:
670 RETVAL = respipe [0];
671 OUTPUT: 1628 OUTPUT:
672 RETVAL 1629 RETVAL
673 1630
674int 1631int
1632poll_fileno ()
1633 CODE:
1634 RETVAL = s_epipe_fd (&respipe);
1635 OUTPUT:
1636 RETVAL
1637
1638int
675poll_cb(...) 1639poll_cb (...)
676 PROTOTYPE: 1640 PROTOTYPE:
677 CODE: 1641 CODE:
678 RETVAL = poll_cb (); 1642 RETVAL = poll_cb ();
679 OUTPUT: 1643 OUTPUT:
680 RETVAL 1644 RETVAL
681 1645
682void 1646void
683poll_wait() 1647poll_wait ()
684 PROTOTYPE:
685 CODE: 1648 CODE:
686 if (nreqs)
687 poll_wait (); 1649 poll_wait ();
688 1650
689int 1651int
690nreqs() 1652nreqs ()
691 PROTOTYPE:
692 CODE: 1653 CODE:
693 RETVAL = nreqs; 1654 RETVAL = eio_nreqs ();
694 OUTPUT: 1655 OUTPUT:
695 RETVAL 1656 RETVAL
696 1657
1658int
1659nready ()
1660 CODE:
1661 RETVAL = eio_nready ();
1662 OUTPUT:
1663 RETVAL
1664
1665int
1666npending ()
1667 CODE:
1668 RETVAL = eio_npending ();
1669 OUTPUT:
1670 RETVAL
1671
1672int
1673nthreads ()
1674 CODE:
1675 RETVAL = eio_nthreads ();
1676 OUTPUT:
1677 RETVAL
1678
1679int
1680fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1681 CODE:
1682 RETVAL = posix_fadvise (fh, offset, length, advice);
1683 OUTPUT:
1684 RETVAL
1685
1686IV
1687sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1688 CODE:
1689 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1690 OUTPUT:
1691 RETVAL
1692
1693void
1694mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1695 PPCODE:
1696 sv_unmagic (scalar, MMAP_MAGIC);
1697{
1698 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1699 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1700 if (addr == (void *)-1)
1701 XSRETURN_NO;
1702
1703 sv_force_normal (scalar);
1704
1705 /* we store the length in mg_obj, as namlen is I32 :/ */
1706 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1707 ->mg_obj = (SV *)length;
1708
1709 SvUPGRADE (scalar, SVt_PV); /* nop... */
1710
1711 if (!(prot & PROT_WRITE))
1712 SvREADONLY_on (scalar);
1713
1714 if (SvLEN (scalar))
1715 Safefree (SvPVX (scalar));
1716
1717 SvPVX (scalar) = (char *)addr;
1718 SvCUR_set (scalar, length);
1719 SvLEN_set (scalar, 0);
1720 SvPOK_only (scalar);
1721
1722 XSRETURN_YES;
1723}
1724
1725void
1726munmap (SV *scalar)
1727 CODE:
1728 sv_unmagic (scalar, MMAP_MAGIC);
1729
1730int
1731madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1732 ALIAS:
1733 mprotect = 1
1734 CODE:
1735{
1736 STRLEN svlen;
1737 void *addr = SvPVbyte (scalar, svlen);
1738 size_t len = SvUV (length);
1739
1740 if (offset < 0)
1741 offset += svlen;
1742
1743 if (offset < 0 || offset > svlen)
1744 croak ("offset outside of scalar");
1745
1746 if (!SvOK (length) || len + offset > svlen)
1747 len = svlen - offset;
1748
1749 addr = (void *)(((intptr_t)addr) + offset);
1750 eio_page_align (&addr, &len);
1751
1752 switch (ix)
1753 {
1754 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1755 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1756 }
1757}
1758 OUTPUT:
1759 RETVAL
1760
1761int
1762munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1763 CODE:
1764{
1765 STRLEN svlen;
1766 void *addr = SvPVbyte (scalar, svlen);
1767 size_t len = SvUV (length);
1768
1769 if (offset < 0)
1770 offset += svlen;
1771
1772 if (offset < 0 || offset > svlen)
1773 croak ("offset outside of scalar");
1774
1775 if (!SvOK (length) || len + offset > svlen)
1776 len = svlen - offset;
1777
1778 addr = (void *)(((intptr_t)addr) + offset);
1779 eio_page_align (&addr, &len);
1780#if _POSIX_MEMLOCK_RANGE
1781 RETVAL = munlock (addr, len);
1782#else
1783 RETVAL = EIO_ENOSYS ();
1784#endif
1785}
1786 OUTPUT:
1787 RETVAL
1788
1789int
1790munlockall ()
1791 CODE:
1792#if _POSIX_MEMLOCK
1793 munlockall ();
1794#else
1795 RETVAL = EIO_ENOSYS ();
1796#endif
1797 OUTPUT:
1798 RETVAL
1799
1800int
1801splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1802 CODE:
1803{
1804#if HAVE_LINUX_SPLICE
1805 loff_t off_in_, off_out_;
1806 RETVAL = splice (
1807 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1808 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1809 length, flags
1810 );
1811#else
1812 RETVAL = EIO_ENOSYS ();
1813#endif
1814}
1815 OUTPUT:
1816 RETVAL
1817
1818int
1819tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1820 CODE:
1821#if HAVE_LINUX_SPLICE
1822 RETVAL = tee (rfh, wfh, length, flags);
1823#else
1824 RETVAL = EIO_ENOSYS ();
1825#endif
1826 OUTPUT:
1827 RETVAL
1828
1829void _on_next_submit (SV *cb)
1830 CODE:
1831 SvREFCNT_dec (on_next_submit);
1832 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1833
1834PROTOTYPES: DISABLE
1835
1836MODULE = IO::AIO PACKAGE = IO::AIO::WD
1837
1838BOOT:
1839{
1840 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1841 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1842}
1843
1844void
1845DESTROY (SV *self)
1846 CODE:
1847{
1848 aio_wd wd = SvAIO_WD (self);
1849#if HAVE_AT
1850 {
1851 SV *callback = &PL_sv_undef;
1852 dREQ; /* clobbers next_pri :/ */
1853 next_pri = req->pri; /* restore next_pri */
1854 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1855 req->type = EIO_WD_CLOSE;
1856 req->wd = wd;
1857 REQ_SEND;
1858 }
1859#else
1860 eio_wd_close_sync (wd);
1861#endif
1862}
1863
1864MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1865
1866void
1867cancel (aio_req_ornot req)
1868 CODE:
1869 eio_cancel (req);
1870
1871void
1872cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1873 PPCODE:
1874{
1875 if (GIMME_V != G_VOID)
1876 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1877
1878 if (items > 1)
1879 {
1880 SV *cb_cv =get_cb (callback);
1881
1882 SvREFCNT_dec (req->callback);
1883 req->callback = SvREFCNT_inc (cb_cv);
1884 }
1885}
1886
1887MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1888
1889void
1890add (aio_req grp, ...)
1891 PPCODE:
1892{
1893 int i;
1894
1895 if (grp->int1 == 2)
1896 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1897
1898 for (i = 1; i < items; ++i )
1899 {
1900 aio_req req;
1901
1902 if (GIMME_V != G_VOID)
1903 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1904
1905 req = SvAIO_REQ (ST (i));
1906
1907 if (req)
1908 eio_grp_add (grp, req);
1909 }
1910}
1911
1912void
1913cancel_subs (aio_req_ornot req)
1914 CODE:
1915 req_cancel_subs (req);
1916
1917void
1918result (aio_req grp, ...)
1919 CODE:
1920{
1921 int i;
1922 AV *av;
1923
1924 grp->errorno = errno;
1925
1926 av = newAV ();
1927 av_extend (av, items - 1);
1928
1929 for (i = 1; i < items; ++i )
1930 av_push (av, newSVsv (ST (i)));
1931
1932 SvREFCNT_dec (grp->sv1);
1933 grp->sv1 = (SV *)av;
1934}
1935
1936void
1937errno (aio_req grp, int errorno = errno)
1938 CODE:
1939 grp->errorno = errorno;
1940
1941void
1942limit (aio_req grp, int limit)
1943 CODE:
1944 eio_grp_limit (grp, limit);
1945
1946void
1947feed (aio_req grp, SV *callback=&PL_sv_undef)
1948 CODE:
1949{
1950 SvREFCNT_dec (grp->sv2);
1951 grp->sv2 = newSVsv (callback);
1952 grp->feed = aio_grp_feed;
1953
1954 if (grp->int2 <= 0)
1955 grp->int2 = 2;
1956
1957 eio_grp_limit (grp, grp->int2);
1958}
1959

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