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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.4 by root, Sun Jul 10 20:57:00 2005 UTC vs.
Revision 1.226 by root, Sun Jan 6 11:48:14 2013 UTC

1#define PERL_NO_GET_CONTEXT 1#include "libeio/xthread.h"
2
3#include <errno.h>
2 4
3#include "EXTERN.h" 5#include "EXTERN.h"
4#include "perl.h" 6#include "perl.h"
5#include "XSUB.h" 7#include "XSUB.h"
6 8
9#include "schmorp.h"
10
11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h>
7#include <sys/types.h> 14#include <sys/types.h>
8#include <sys/stat.h> 15#include <sys/stat.h>
9#include <unistd.h> 16#include <limits.h>
10#include <fcntl.h> 17#include <fcntl.h>
11#include <signal.h>
12#include <sched.h> 18#include <sched.h>
13#include <endian.h>
14 19
15#include <pthread.h> 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
16#include <sys/syscall.h> 21# include <sys/mman.h>
22#endif
17 23
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 24#if __linux__
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 25# include <linux/fs.h>
20typedef 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
21 32
22#if __ia64 33/* perl namespace pollution */
23# 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
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
27 144
28enum { 145/* defines all sorts of constants to 0 unless they are already defined */
29 REQ_QUIT, 146#include "def0.h"
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};
35 147
36typedef struct aio_cb { 148#ifndef makedev
37 struct aio_cb *volatile next; 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
38 157
39 int type; 158#if PAGESIZE <= 0
159# define PAGESIZE sysconf (_SC_PAGESIZE)
160#endif
40 161
41 int fd; 162/*****************************************************************************/
42 off_t offset;
43 size_t length;
44 ssize_t result;
45 mode_t mode; /* open */
46 int errorno;
47 SV *data, *callback;
48 void *dataptr;
49 STRLEN dataoffset;
50
51 Stat_t *statdata;
52} aio_cb;
53
54typedef aio_cb *aio_req;
55
56static int started;
57static int nreqs;
58static int max_outstanding = 1<<30;
59static int respipe [2];
60
61static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
62static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
63static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
64
65static volatile aio_req reqs, reqe; /* queue start, queue end */
66static volatile aio_req ress, rese; /* queue start, queue end */
67 163
68static void 164static void
69poll_wait () 165fiemap (eio_req *req)
70{ 166{
71 if (!nreqs) 167 req->result = -1;
168
169#if HAVE_FIEMAP
170 /* assume some c99 */
171 struct fiemap *fiemap = 0;
172 size_t end_offset;
173 int count = req->int3;
174
175 req->flags |= EIO_FLAG_PTR1_FREE;
176
177 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
178 /* increase in 3.5kb steps */
179 if (count < 0)
180 count = 8;
181
182 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
183 errno = ENOMEM;
184 if (!fiemap)
72 return; 185 return;
73 186
74 fd_set rfd; 187 req->ptr1 = fiemap;
75 FD_ZERO(&rfd);
76 FD_SET(respipe [0], &rfd);
77 188
78 select (respipe [0] + 1, &rfd, 0, 0, 0); 189 fiemap->fm_start = req->offs;
79} 190 fiemap->fm_length = req->size;
191 fiemap->fm_flags = req->int2;
192 fiemap->fm_extent_count = count;
80 193
81static int 194 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
82poll_cb (pTHX) 195 return;
83{ 196
84 dSP; 197 if (req->int3 >= 0 /* not autosizing */
85 int count = 0; 198 || !fiemap->fm_mapped_extents /* no more extents */
86 aio_req req; 199 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
87 200 goto done;
88 { 201
89 /* read and signals sent by the worker threads */ 202 /* else we have to loop -
90 char buf [32]; 203 * it would be tempting (actually I tried that first) to just query the
91 while (read (respipe [0], buf, 32) > 0) 204 * number of extents needed, but linux often feels like not returning all
92 ; 205 * extents, without telling us it left any out. this complicates
93 } 206 * this quite a bit.
207 */
208
209 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
94 210
95 for (;;) 211 for (;;)
96 { 212 {
97 pthread_mutex_lock (&reslock); 213 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
214 char scratch[3072];
215 struct fiemap *incmap = (struct fiemap *)scratch;
98 216
99 req = ress; 217 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
218 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
219 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
220 incmap->fm_flags = fiemap->fm_flags;
221 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
100 222
101 if (ress) 223 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
224 return;
225
226 if (!incmap->fm_mapped_extents)
227 goto done;
228
229 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
230 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
231 errno = ENOMEM;
232 if (!fiemap)
233 return;
234
235 req->ptr1 = fiemap;
236
237 for (count = 0; count < incmap->fm_mapped_extents; ++count)
102 { 238 {
103 ress = ress->next; 239 struct fiemap_extent *e = incmap->fm_extents + count;
104 if (!ress) rese = 0; 240
241 if (e->fe_logical + e->fe_length >= end_offset)
242 goto done;
243
244 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
245
246 if (e->fe_flags & FIEMAP_EXTENT_LAST)
247 goto done;
248
105 } 249 }
250 }
106 251
107 pthread_mutex_unlock (&reslock); 252done:
253 req->result = 0;
108 254
109 if (!req) 255#else
110 break; 256 errno = ENOSYS;
257#endif
258}
111 259
112 nreqs--; 260/*****************************************************************************/
113 261
114 if (req->type == REQ_QUIT) 262enum {
115 started--; 263 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116 else 264};
265
266typedef eio_req *aio_req;
267typedef eio_req *aio_req_ornot;
268typedef eio_wd aio_wd;
269
270static SV *on_next_submit;
271static int next_pri = EIO_PRI_DEFAULT;
272static int max_outstanding;
273
274static s_epipe respipe;
275
276static void req_destroy (aio_req req);
277static void req_cancel (aio_req req);
278
279static void
280want_poll (void)
281{
282 /* write a dummy byte to the pipe so fh becomes ready */
283 s_epipe_signal (&respipe);
284}
285
286static void
287done_poll (void)
288{
289 /* read any signals sent by the worker threads */
290 s_epipe_drain (&respipe);
291}
292
293/* must be called at most once */
294static SV *
295req_sv (aio_req req, HV *stash)
296{
297 if (!req->self)
298 {
299 req->self = (SV *)newHV ();
300 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
301 }
302
303 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
304}
305
306static SV *
307newSVaio_wd (aio_wd wd)
308{
309 return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
310}
311
312static aio_req
313SvAIO_REQ (SV *sv)
314{
315 MAGIC *mg;
316
317 if (!SvROK (sv)
318 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
319 || (SvSTASH (SvRV (sv)) != aio_grp_stash
320 && SvSTASH (SvRV (sv)) != aio_req_stash
321 && !sv_derived_from (sv, "IO::AIO::REQ")))
322 croak ("object of class IO::AIO::REQ expected");
323
324 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
325
326 return mg ? (aio_req)mg->mg_ptr : 0;
327}
328
329static aio_wd
330SvAIO_WD (SV *sv)
331{
332 if (!SvROK (sv)
333 || SvTYPE (SvRV (sv)) != SVt_PVMG
334 || SvSTASH (SvRV (sv)) != aio_wd_stash)
335 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
336
337 return (aio_wd)(long)SvIVX (SvRV (sv));
338}
339
340static void
341aio_grp_feed (aio_req grp)
342{
343 if (grp->sv2 && SvOK (grp->sv2))
344 {
345 dSP;
346
347 ENTER;
348 SAVETMPS;
349 PUSHMARK (SP);
350 XPUSHs (req_sv (grp, aio_grp_stash));
351 PUTBACK;
352 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
353 SPAGAIN;
354 FREETMPS;
355 LEAVE;
356 }
357}
358
359static void
360req_submit (eio_req *req)
361{
362 eio_submit (req);
363
364 if (expect_false (on_next_submit))
365 {
366 dSP;
367 SV *cb = sv_2mortal (on_next_submit);
368
369 on_next_submit = 0;
370
371 PUSHMARK (SP);
372 PUTBACK;
373 call_sv (cb, G_DISCARD | G_EVAL);
374 }
375}
376
377static int
378req_invoke (eio_req *req)
379{
380 if (req->flags & FLAG_SV2_RO_OFF)
381 SvREADONLY_off (req->sv2);
382
383 if (!EIO_CANCELLED (req) && req->callback)
384 {
385 dSP;
386 static SV *sv_result_cache; /* caches the result integer SV */
387 SV *sv_result;
388
389 ENTER;
390 SAVETMPS;
391 PUSHMARK (SP);
392 EXTEND (SP, 1);
393
394 /* do not recreate the result IV from scratch each time */
395 if (expect_true (sv_result_cache))
117 { 396 {
118 int errorno = errno; 397 sv_result = sv_result_cache; sv_result_cache = 0;
119 errno = req->errorno; 398 SvIV_set (sv_result, req->result);
120 399 SvIOK_only (sv_result);
121 if (req->type == REQ_READ)
122 SvCUR_set (req->data, req->dataoffset
123 + req->result > 0 ? req->result : 0);
124
125 if (req->data)
126 SvREFCNT_dec (req->data);
127
128 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
129 {
130 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
131 PL_laststatval = req->result;
132 PL_statcache = *(req->statdata);
133
134 Safefree (req->statdata);
135 }
136
137 PUSHMARK (SP);
138 XPUSHs (sv_2mortal (newSViv (req->result)));
139
140 if (req->type == REQ_OPEN)
141 {
142 /* convert fd to fh */
143 SV *fh;
144
145 PUTBACK;
146 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
147 SPAGAIN;
148
149 fh = POPs;
150
151 PUSHMARK (SP);
152 XPUSHs (fh);
153 }
154
155 PUTBACK;
156 call_sv (req->callback, G_VOID | G_EVAL);
157 SPAGAIN;
158
159 if (req->callback)
160 SvREFCNT_dec (req->callback);
161
162 errno = errorno;
163 count++;
164 }
165
166 Safefree (req);
167 }
168
169 return count;
170}
171
172static void *aio_proc(void *arg);
173
174static void
175start_thread (void)
176{
177 sigset_t fullsigset, oldsigset;
178 pthread_t tid;
179 pthread_attr_t attr;
180
181 pthread_attr_init (&attr);
182 pthread_attr_setstacksize (&attr, STACKSIZE);
183 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
184
185 sigfillset (&fullsigset);
186 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
187
188 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
189 started++;
190
191 sigprocmask (SIG_SETMASK, &oldsigset, 0);
192}
193
194static void
195send_req (aio_req req)
196{
197 nreqs++;
198
199 pthread_mutex_lock (&reqlock);
200
201 req->next = 0;
202
203 if (reqe)
204 {
205 reqe->next = req;
206 reqe = req;
207 }
208 else
209 reqe = reqs = req;
210
211 pthread_cond_signal (&reqwait);
212 pthread_mutex_unlock (&reqlock);
213
214 while (nreqs > max_outstanding)
215 {
216 poll_wait ();
217 poll_cb ();
218 }
219}
220
221static void
222end_thread (void)
223{
224 aio_req req;
225 New (0, req, 1, aio_cb);
226 req->type = REQ_QUIT;
227
228 send_req (req);
229}
230
231static void
232read_write (pTHX_
233 int dowrite, int fd, off_t offset, size_t length,
234 SV *data, STRLEN dataoffset, SV *callback)
235{
236 aio_req req;
237 STRLEN svlen;
238 char *svptr = SvPV (data, svlen);
239
240 SvUPGRADE (data, SVt_PV);
241 SvPOK_on (data);
242
243 if (dataoffset < 0)
244 dataoffset += svlen;
245
246 if (dataoffset < 0 || dataoffset > svlen)
247 croak ("data offset outside of string");
248
249 if (dowrite)
250 {
251 /* write: check length and adjust. */
252 if (length < 0 || length + dataoffset > svlen)
253 length = svlen - dataoffset;
254 }
255 else
256 {
257 /* read: grow scalar as necessary */
258 svptr = SvGROW (data, length + dataoffset);
259 }
260
261 if (length < 0)
262 croak ("length must not be negative");
263
264 Newz (0, req, 1, aio_cb);
265
266 if (!req)
267 croak ("out of memory during aio_req allocation");
268
269 req->type = dowrite ? REQ_WRITE : REQ_READ;
270 req->fd = fd;
271 req->offset = offset;
272 req->length = length;
273 req->data = SvREFCNT_inc (data);
274 req->dataptr = (char *)svptr + dataoffset;
275 req->callback = SvREFCNT_inc (callback);
276
277 send_req (req);
278}
279
280static void *
281aio_proc (void *thr_arg)
282{
283 aio_req req;
284 int type;
285
286 do
287 {
288 pthread_mutex_lock (&reqlock);
289
290 for (;;)
291 {
292 req = reqs;
293
294 if (reqs)
295 {
296 reqs = reqs->next;
297 if (!reqs) reqe = 0;
298 }
299
300 if (req)
301 break;
302
303 pthread_cond_wait (&reqwait, &reqlock);
304 }
305
306 pthread_mutex_unlock (&reqlock);
307
308 errno = 0; /* strictly unnecessary */
309
310 type = req->type;
311
312 switch (type)
313 {
314 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;
315 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;
316#if SYS_readahead
317 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
318#else
319 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
320#endif
321
322 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
323 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325
326 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
327 case REQ_CLOSE: req->result = close (req->fd); break;
328 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
329
330 case REQ_FSYNC: req->result = fsync (req->fd); break;
331 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332
333 case REQ_QUIT:
334 break;
335
336 default:
337 req->result = ENOSYS;
338 break;
339 }
340
341 req->errorno = errno;
342
343 pthread_mutex_lock (&reslock);
344
345 req->next = 0;
346
347 if (rese)
348 {
349 rese->next = req;
350 rese = req;
351 } 400 }
352 else 401 else
353 { 402 {
354 rese = ress = req; 403 sv_result = newSViv (req->result);
355 404 SvREADONLY_on (sv_result);
356 /* write a dummy byte to the pipe so fh becomes ready */
357 write (respipe [1], &respipe, 1);
358 } 405 }
359 406
360 pthread_mutex_unlock (&reslock); 407 switch (req->type)
408 {
409 case EIO_WD_OPEN:
410 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
411 break;
412
413 case EIO_READDIR:
414 {
415 SV *rv = &PL_sv_undef;
416
417 if (req->result >= 0)
418 {
419 int i;
420 char *names = (char *)req->ptr2;
421 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
422 AV *av = newAV ();
423
424 av_extend (av, req->result - 1);
425
426 for (i = 0; i < req->result; ++i)
427 {
428 if (req->int1 & EIO_READDIR_DENTS)
429 {
430 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
431
432 if (req->int1 & EIO_READDIR_CUSTOM2)
433 {
434 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
435 AV *avent = newAV ();
436
437 av_extend (avent, 2);
438
439 if (!sv_type [ent->type])
440 {
441 sv_type [ent->type] = newSViv (ent->type);
442 SvREADONLY_on (sv_type [ent->type]);
443 }
444
445 av_store (avent, 0, namesv);
446 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
447 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
448
449 av_store (av, i, newRV_noinc ((SV *)avent));
450 }
451 else
452 av_store (av, i, namesv);
453
454 ++ent;
455 }
456 else
457 {
458 SV *name = newSVpv (names, 0);
459 av_store (av, i, name);
460 names += SvCUR (name) + 1;
461 }
462 }
463
464 rv = sv_2mortal (newRV_noinc ((SV *)av));
465 }
466
467 PUSHs (rv);
468
469 if (req->int1 & EIO_READDIR_CUSTOM1)
470 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
471 }
472 break;
473
474 case EIO_OPEN:
475 {
476 /* convert fd to fh */
477 SV *fh = &PL_sv_undef;
478
479 if (req->result >= 0)
480 {
481 GV *gv = (GV *)sv_newmortal ();
482 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
483 char sym [64];
484 int symlen;
485
486 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
487 gv_init (gv, aio_stash, sym, symlen, 0);
488
489 symlen = snprintf (
490 sym,
491 sizeof (sym),
492 "%s&=%d",
493 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
494 (int)req->result
495 );
496
497 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
498 fh = (SV *)gv;
499 }
500
501 PUSHs (fh);
502 }
503 break;
504
505 case EIO_STATVFS:
506 case EIO_FSTATVFS:
507 {
508 SV *rv = &PL_sv_undef;
509
510#ifndef _WIN32
511 if (req->result >= 0)
512 {
513 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
514 HV *hv = newHV ();
515 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
516 * chooses to make it a struct.
517 */
518 unsigned long fsid = 0;
519 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
520
521 rv = sv_2mortal (newRV_noinc ((SV *)hv));
522
523 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
524 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
525 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
526 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
527 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
528 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
529 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
530 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
531 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
532 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
533 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
534 }
535#endif
536
537 PUSHs (rv);
538 }
539
540 break;
541
542 case EIO_GROUP:
543 req->int1 = 2; /* mark group as finished */
544
545 if (req->sv1)
546 {
547 int i;
548 AV *av = (AV *)req->sv1;
549
550 EXTEND (SP, AvFILL (av) + 1);
551 for (i = 0; i <= AvFILL (av); ++i)
552 PUSHs (*av_fetch (av, i, 0));
553 }
554 break;
555
556 case EIO_NOP:
557 case EIO_BUSY:
558 break;
559
560 case EIO_READLINK:
561 case EIO_REALPATH:
562 if (req->result > 0)
563 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
564 break;
565
566 case EIO_STAT:
567 case EIO_LSTAT:
568 case EIO_FSTAT:
569 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
570
571 if (!(PL_laststatval = req->result))
572 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
573 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
574
575 PUSHs (sv_result);
576 break;
577
578 case EIO_SEEK:
579 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
580 break;
581
582 case EIO_READ:
583 {
584 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
585 *SvEND (req->sv2) = 0;
586 SvPOK_only (req->sv2);
587 SvSETMAGIC (req->sv2);
588 PUSHs (sv_result);
589 }
590 break;
591
592 case EIO_CUSTOM:
593 if (req->feed == fiemap)
594 {
595#if HAVE_FIEMAP
596 if (!req->result)
597 {
598 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
599
600 if (fiemap->fm_extent_count)
601 {
602 AV *av = newAV ();
603 int i;
604
605 while (fiemap->fm_mapped_extents)
606 {
607 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
608 AV *ext_av = newAV ();
609
610 av_store (ext_av, 3, newSVuv (extent->fe_flags));
611 av_store (ext_av, 2, newSVval64 (extent->fe_length));
612 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
613 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
614
615 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
616 }
617
618 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
619 }
620 else
621 {
622 SvIV_set (sv_result, fiemap->fm_mapped_extents);
623 PUSHs (sv_result);
624 }
625 }
626#endif
627 }
628 else
629 PUSHs (sv_result);
630 break;
631
632 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
633 if (req->result > 0)
634 SvIV_set (sv_result, 0);
635 /* FALLTHROUGH */
636
637 default:
638 PUSHs (sv_result);
639 break;
640 }
641
642 errno = req->errorno;
643
644 PUTBACK;
645 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
646 SPAGAIN;
647
648 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
649 SvREFCNT_dec (sv_result);
650 else
651 sv_result_cache = sv_result;
652
653 FREETMPS;
654 LEAVE;
655
656 PUTBACK;
361 } 657 }
362 while (type != REQ_QUIT); 658
659 return !!SvTRUE (ERRSV);
660}
661
662static void
663req_destroy (aio_req req)
664{
665 if (req->self)
666 {
667 sv_unmagic (req->self, PERL_MAGIC_ext);
668 SvREFCNT_dec (req->self);
669 }
670
671 SvREFCNT_dec (req->sv1);
672 SvREFCNT_dec (req->sv2);
673 SvREFCNT_dec (req->sv3);
674 SvREFCNT_dec (req->sv4);
675 SvREFCNT_dec (req->callback);
676
677 free (req);
678}
679
680static void
681req_cancel_subs (aio_req grp)
682{
683 if (grp->type != EIO_GROUP)
684 return;
685
686 SvREFCNT_dec (grp->sv2);
687 grp->sv2 = 0;
688
689 eio_grp_cancel (grp);
690}
691
692static void ecb_cold
693create_respipe (void)
694{
695 if (s_epipe_renew (&respipe))
696 croak ("IO::AIO: unable to initialize result pipe");
697}
698
699static void
700poll_wait (void)
701{
702 while (eio_nreqs ())
703 {
704 int size;
705
706 X_LOCK (reslock);
707 size = res_queue.size;
708 X_UNLOCK (reslock);
709
710 if (size)
711 return;
712
713 etp_maybe_start_thread ();
714
715 s_epipe_wait (&respipe);
716 }
717}
718
719static int
720poll_cb (void)
721{
722 for (;;)
723 {
724 int res = eio_poll ();
725
726 if (res > 0)
727 croak (0);
728
729 if (!max_outstanding || max_outstanding > eio_nreqs ())
730 return res;
731
732 poll_wait ();
733 }
734}
735
736static void ecb_cold
737reinit (void)
738{
739 create_respipe ();
740
741 if (eio_init (want_poll, done_poll) < 0)
742 croak ("IO::AIO: unable to initialise eio library");
743}
744
745/*****************************************************************************/
746
747#if !_POSIX_MAPPED_FILES
748# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
749# define munmap(addr,length) EIO_ENOSYS ()
750#endif
751
752#if !_POSIX_MEMORY_PROTECTION
753# define mprotect(addr,len,prot) EIO_ENOSYS ()
754# define PROT_NONE 0
755# define PROT_WRITE 0
756# define MAP_PRIVATE 0
757# define MAP_SHARED 0
758# define MAP_FIXED 0
759#endif
760
761#define MMAP_MAGIC PERL_MAGIC_ext
762
763static int ecb_cold
764mmap_free (pTHX_ SV *sv, MAGIC *mg)
765{
766 int old_errno = errno;
767 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
768 errno = old_errno;
769
770 mg->mg_obj = 0; /* just in case */
771
772 SvREADONLY_off (sv);
773
774 if (SvPVX (sv) != mg->mg_ptr)
775 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
776
777 SvCUR_set (sv, 0);
778 SvPVX (sv) = 0;
779 SvOK_off (sv);
363 780
364 return 0; 781 return 0;
365} 782}
366 783
784static MGVTBL mmap_vtbl = {
785 0, 0, 0, 0, mmap_free
786};
787
788/*****************************************************************************/
789
790static SV *
791get_cb (SV *cb_sv)
792{
793 SvGETMAGIC (cb_sv);
794 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
795}
796
797static aio_req ecb_noinline
798dreq (SV *callback)
799{
800 SV *cb_cv;
801 aio_req req;
802 int req_pri = next_pri;
803 next_pri = EIO_PRI_DEFAULT;
804
805 cb_cv = get_cb (callback);
806
807 req = calloc (sizeof (*req), 1);
808 if (!req)
809 croak ("out of memory during eio_req allocation");
810
811 req->callback = SvREFCNT_inc (cb_cv);
812 req->pri = req_pri;
813
814 return req;
815}
816
817#define dREQ \
818 aio_req req = dreq (callback); \
819
820#define REQ_SEND \
821 PUTBACK; \
822 req_submit (req); \
823 SPAGAIN; \
824 \
825 if (GIMME_V != G_VOID) \
826 XPUSHs (req_sv (req, aio_req_stash));
827
828ecb_inline void
829req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
830{
831 if (expect_false (SvROK (path)))
832 {
833 SV *rv = SvRV (path);
834 SV *wdob;
835
836 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
837 {
838 path = AvARRAY (rv)[1];
839 wdob = AvARRAY (rv)[0];
840
841 if (SvOK (wdob))
842 {
843 *wd = SvAIO_WD (wdob);
844 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
845 }
846 else
847 *wd = EIO_INVALID_WD;
848 }
849 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
850 {
851 *wd = (aio_wd)(long)SvIVX (rv);
852 *wdsv = SvREFCNT_inc_NN (rv);
853 *ptr = ".";
854 return; /* path set to "." */
855 }
856 else
857 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
858 }
859
860 *pathsv = newSVsv (path);
861 *ptr = SvPVbyte_nolen (*pathsv);
862}
863
864static void ecb_noinline
865req_set_path1 (aio_req req, SV *path)
866{
867 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
868}
869
870static void ecb_noinline
871req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
872{
873 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
874
875 switch (SvTYPE (rv))
876 {
877 case SVt_PVIO:
878 case SVt_PVLV:
879 case SVt_PVGV:
880 req->type = type_fh;
881 req->sv1 = newSVsv (fh_or_path);
882 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
883 break;
884
885 default:
886 req->type = type_path;
887 req_set_path1 (req, fh_or_path);
888 break;
889 }
890}
891
892XS(boot_IO__AIO) ecb_cold;
893
367MODULE = IO::AIO PACKAGE = IO::AIO 894MODULE = IO::AIO PACKAGE = IO::AIO
368 895
896PROTOTYPES: ENABLE
897
369BOOT: 898BOOT:
370{ 899{
371 if (pipe (respipe)) 900 static const struct {
372 croak ("unable to initialize result pipe"); 901 const char *name;
902 IV iv;
903 } *civ, const_iv[] = {
904# define const_niv(name, value) { # name, (IV) value },
905# define const_iv(name) { # name, (IV) name },
906# define const_eio(name) { # name, (IV) EIO_ ## name },
373 907
374 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 908 /* you have to re-run ./gendef0 after adding/Removing any constants here */
375 croak ("cannot set result pipe to nonblocking mode");
376 909
377 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 910 const_iv (ENOSYS)
378 croak ("cannot set result pipe to nonblocking mode"); 911 const_iv (EXDEV)
379} 912 const_iv (EBADR)
380 913
914 const_iv (O_RDONLY)
915 const_iv (O_WRONLY)
916 const_iv (O_RDWR)
917 const_iv (O_CREAT)
918 const_iv (O_TRUNC)
919 const_iv (O_EXCL)
920 const_iv (O_APPEND)
921
922 const_iv (O_ASYNC)
923 const_iv (O_DIRECT)
924 const_iv (O_NOATIME)
925
926 const_iv (O_CLOEXEC)
927 const_iv (O_NOCTTY)
928 const_iv (O_NOFOLLOW)
929 const_iv (O_NONBLOCK)
930 const_iv (O_EXEC)
931 const_iv (O_SEARCH)
932 const_iv (O_DIRECTORY)
933 const_iv (O_DSYNC)
934 const_iv (O_RSYNC)
935 const_iv (O_SYNC)
936 const_iv (O_TTY_INIT)
937
938 const_iv (S_IFIFO)
939 const_iv (S_IFCHR)
940 const_iv (S_IFBLK)
941 const_iv (S_IFLNK)
942 const_iv (S_IFREG)
943 const_iv (S_IFDIR)
944 const_iv (S_IFWHT)
945 const_iv (S_IFSOCK)
946 const_iv (S_IFMT)
947
948 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
949 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
950 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
951 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
952 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
953 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
954
955 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
956 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
957 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
958 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
959 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
960
961 const_iv (ST_RDONLY)
962 const_iv (ST_NOSUID)
963 const_iv (ST_NODEV)
964 const_iv (ST_NOEXEC)
965 const_iv (ST_SYNCHRONOUS)
966 const_iv (ST_MANDLOCK)
967 const_iv (ST_WRITE)
968 const_iv (ST_APPEND)
969 const_iv (ST_IMMUTABLE)
970 const_iv (ST_NOATIME)
971 const_iv (ST_NODIRATIME)
972 const_iv (ST_RELATIME)
973
974 const_iv (PROT_NONE)
975 const_iv (PROT_EXEC)
976 const_iv (PROT_READ)
977 const_iv (PROT_WRITE)
978
979 /*const_iv (MAP_FIXED)*/
980 const_iv (MAP_PRIVATE)
981 const_iv (MAP_SHARED)
982 const_iv (MAP_ANONYMOUS)
983
984 /* linuxish */
985 const_iv (MAP_HUGETLB)
986 const_iv (MAP_LOCKED)
987 const_iv (MAP_NORESERVE)
988 const_iv (MAP_POPULATE)
989 const_iv (MAP_NONBLOCK)
990
991 const_iv (FIEMAP_FLAG_SYNC)
992 const_iv (FIEMAP_FLAG_XATTR)
993 const_iv (FIEMAP_FLAGS_COMPAT)
994 const_iv (FIEMAP_EXTENT_LAST)
995 const_iv (FIEMAP_EXTENT_UNKNOWN)
996 const_iv (FIEMAP_EXTENT_DELALLOC)
997 const_iv (FIEMAP_EXTENT_ENCODED)
998 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
999 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1000 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1001 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1002 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1003 const_iv (FIEMAP_EXTENT_MERGED)
1004 const_iv (FIEMAP_EXTENT_SHARED)
1005
1006 const_iv (SPLICE_F_MOVE)
1007 const_iv (SPLICE_F_NONBLOCK)
1008 const_iv (SPLICE_F_MORE)
1009 const_iv (SPLICE_F_GIFT)
1010
1011 const_iv (SEEK_DATA)
1012 const_iv (SEEK_HOLE)
1013
1014 /* libeio constants */
1015 const_eio (SEEK_SET)
1016 const_eio (SEEK_CUR)
1017 const_eio (SEEK_END)
1018
1019 const_eio (MCL_FUTURE)
1020 const_eio (MCL_CURRENT)
1021
1022 const_eio (MS_ASYNC)
1023 const_eio (MS_INVALIDATE)
1024 const_eio (MS_SYNC)
1025
1026 const_eio (MT_MODIFY)
1027
1028 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1029 const_eio (SYNC_FILE_RANGE_WRITE)
1030 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1031
1032 const_eio (FALLOC_FL_KEEP_SIZE)
1033 const_eio (FALLOC_FL_PUNCH_HOLE)
1034
1035 const_eio (READDIR_DENTS)
1036 const_eio (READDIR_DIRS_FIRST)
1037 const_eio (READDIR_STAT_ORDER)
1038 const_eio (READDIR_FOUND_UNKNOWN)
1039
1040 const_eio (DT_UNKNOWN)
1041 const_eio (DT_FIFO)
1042 const_eio (DT_CHR)
1043 const_eio (DT_DIR)
1044 const_eio (DT_BLK)
1045 const_eio (DT_REG)
1046 const_eio (DT_LNK)
1047 const_eio (DT_SOCK)
1048 const_eio (DT_WHT)
1049 };
1050
1051 aio_stash = gv_stashpv ("IO::AIO" , 1);
1052 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1053 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1054 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1055
1056 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1057 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1058
1059 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1060
1061 reinit ();
1062}
1063
381void 1064void
382min_parallel(nthreads) 1065reinit ()
383 int nthreads 1066 PROTOTYPE:
1067
1068void
1069max_poll_reqs (unsigned int nreqs)
384 PROTOTYPE: $ 1070 PROTOTYPE: $
385 CODE: 1071 CODE:
386 while (nthreads > started) 1072 eio_set_max_poll_reqs (nreqs);
387 start_thread ();
388 1073
389void 1074void
390max_parallel(nthreads) 1075max_poll_time (double nseconds)
391 int nthreads
392 PROTOTYPE: $ 1076 PROTOTYPE: $
393 CODE: 1077 CODE:
1078 eio_set_max_poll_time (nseconds);
1079
1080void
1081min_parallel (unsigned int nthreads)
1082 PROTOTYPE: $
1083 CODE:
1084 eio_set_min_parallel (nthreads);
1085
1086void
1087max_parallel (unsigned int nthreads)
1088 PROTOTYPE: $
1089 CODE:
1090 eio_set_max_parallel (nthreads);
1091
1092void
1093max_idle (unsigned int nthreads)
1094 PROTOTYPE: $
1095 CODE:
1096 eio_set_max_idle (nthreads);
1097
1098void
1099idle_timeout (unsigned int seconds)
1100 PROTOTYPE: $
1101 CODE:
1102 eio_set_idle_timeout (seconds);
1103
1104void
1105max_outstanding (unsigned int maxreqs)
1106 PROTOTYPE: $
1107 CODE:
1108 max_outstanding = maxreqs;
1109
1110void
1111aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1112 PPCODE:
394{ 1113{
395 int cur = started; 1114 dREQ;
396 while (cur > nthreads) 1115
397 { 1116 req->type = EIO_WD_OPEN;
398 end_thread (); 1117 req_set_path1 (req, pathname);
1118
1119 REQ_SEND;
1120}
1121
1122void
1123aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1124 PPCODE:
1125{
1126 dREQ;
1127
1128 req->type = EIO_OPEN;
1129 req_set_path1 (req, pathname);
1130 req->int1 = flags;
1131 req->int2 = mode;
1132
1133 REQ_SEND;
1134}
1135
1136void
1137aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1138 ALIAS:
1139 aio_fsync = EIO_FSYNC
1140 aio_fdatasync = EIO_FDATASYNC
1141 aio_syncfs = EIO_SYNCFS
1142 PPCODE:
1143{
1144 int fd = s_fileno_croak (fh, 0);
1145 dREQ;
1146
1147 req->type = ix;
1148 req->sv1 = newSVsv (fh);
1149 req->int1 = fd;
1150
1151 REQ_SEND;
1152}
1153
1154void
1155aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1156 PPCODE:
1157{
1158 int fd = s_fileno_croak (fh, 0);
1159 dREQ;
1160
1161 req->type = EIO_SYNC_FILE_RANGE;
1162 req->sv1 = newSVsv (fh);
1163 req->int1 = fd;
1164 req->offs = offset;
1165 req->size = nbytes;
1166 req->int2 = flags;
1167
1168 REQ_SEND;
1169}
1170
1171void
1172aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1173 PPCODE:
1174{
1175 int fd = s_fileno_croak (fh, 0);
1176 dREQ;
1177
1178 req->type = EIO_FALLOCATE;
1179 req->sv1 = newSVsv (fh);
1180 req->int1 = fd;
1181 req->int2 = mode;
1182 req->offs = offset;
1183 req->size = len;
1184
1185 REQ_SEND;
1186}
1187
1188void
1189aio_close (SV *fh, SV *callback=&PL_sv_undef)
1190 PPCODE:
1191{
1192 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1193 int fd = s_fileno_croak (fh, 0);
1194 dREQ;
1195
1196 if (expect_false (close_fd < 0))
1197 {
1198 int pipefd [2];
1199
1200 if (
1201#ifdef _WIN32
1202 _pipe (pipefd, 1, _O_BINARY) < 0
1203#else
1204 pipe (pipefd) < 0
1205 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1206#endif
1207 || close (pipefd [1]) < 0
399 cur--; 1208 )
1209 abort (); /*D*/
1210
1211 close_fd = pipefd [0];
400 } 1212 }
401 1213
402 while (started > nthreads) 1214 req->type = EIO_DUP2;
1215 req->int1 = close_fd;
1216 req->sv2 = newSVsv (fh);
1217 req->int2 = fd;
1218
1219 REQ_SEND;
1220}
1221
1222void
1223aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1224 PPCODE:
1225{
1226 int fd = s_fileno_croak (fh, 0);
1227 dREQ;
1228
1229 req->type = EIO_SEEK;
1230 req->sv1 = newSVsv (fh);
1231 req->int1 = fd;
1232 req->offs = SvVAL64 (offset);
1233 req->int2 = whence;
1234
1235 REQ_SEND;
1236}
1237
1238void
1239aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1240 ALIAS:
1241 aio_read = EIO_READ
1242 aio_write = EIO_WRITE
1243 PPCODE:
1244{
1245 STRLEN svlen;
1246 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1247 char *svptr = SvPVbyte (data, svlen);
1248 UV len = SvUV (length);
1249
1250 if (dataoffset < 0)
1251 dataoffset += svlen;
1252
1253 if (dataoffset < 0 || dataoffset > svlen)
1254 croak ("dataoffset outside of data scalar");
1255
1256 if (ix == EIO_WRITE)
403 { 1257 {
404 poll_wait (); 1258 /* write: check length and adjust. */
405 poll_cb (aTHX); 1259 if (!SvOK (length) || len + dataoffset > svlen)
406 } 1260 len = svlen - dataoffset;
407}
408
409int
410max_outstanding(nreqs)
411 int nreqs
412 PROTOTYPE: $
413 CODE:
414 RETVAL = max_outstanding;
415 max_outstanding = nreqs;
416
417void
418aio_open(pathname,flags,mode,callback)
419 SV * pathname
420 int flags
421 int mode
422 SV * callback
423 PROTOTYPE: $$$$
424 CODE:
425{
426 aio_req req;
427
428 Newz (0, req, 1, aio_cb);
429
430 if (!req)
431 croak ("out of memory during aio_req allocation");
432
433 req->type = REQ_OPEN;
434 req->data = newSVsv (pathname);
435 req->dataptr = SvPV_nolen (req->data);
436 req->fd = flags;
437 req->mode = mode;
438 req->callback = SvREFCNT_inc (callback);
439
440 send_req (req);
441}
442
443void
444aio_close(fh,callback)
445 InputStream fh
446 SV * callback
447 PROTOTYPE: $$
448 ALIAS:
449 aio_close = REQ_CLOSE
450 aio_fsync = REQ_FSYNC
451 aio_fdatasync = REQ_FDATASYNC
452 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 = ix;
462 req->fd = PerlIO_fileno (fh);
463 req->callback = SvREFCNT_inc (callback);
464
465 send_req (req);
466}
467
468void
469aio_read(fh,offset,length,data,dataoffset,callback)
470 InputStream fh
471 UV offset
472 IV length
473 SV * data
474 IV dataoffset
475 SV * callback
476 PROTOTYPE: $$$$$$
477 CODE:
478 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
479
480void
481aio_write(fh,offset,length,data,dataoffset,callback)
482 OutputStream fh
483 UV offset
484 IV length
485 SV * data
486 IV dataoffset
487 SV * callback
488 PROTOTYPE: $$$$$$
489 CODE:
490 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
491
492void
493aio_readahead(fh,offset,length,callback)
494 InputStream fh
495 UV offset
496 IV length
497 SV * callback
498 PROTOTYPE: $$$$
499 CODE:
500{
501 aio_req req;
502
503 if (length < 0)
504 croak ("length must not be negative");
505
506 Newz (0, req, 1, aio_cb);
507
508 if (!req)
509 croak ("out of memory during aio_req allocation");
510
511 req->type = REQ_READAHEAD;
512 req->fd = PerlIO_fileno (fh);
513 req->offset = offset;
514 req->length = length;
515 req->callback = SvREFCNT_inc (callback);
516
517 send_req (req);
518}
519
520void
521aio_stat(fh_or_path,callback)
522 SV * fh_or_path
523 SV * callback
524 PROTOTYPE: $$
525 ALIAS:
526 aio_lstat = 1
527 CODE:
528{
529 aio_req req;
530
531 Newz (0, req, 1, aio_cb);
532
533 if (!req)
534 croak ("out of memory during aio_req allocation");
535
536 New (0, req->statdata, 1, Stat_t);
537
538 if (!req->statdata)
539 croak ("out of memory during aio_req->statdata allocation");
540
541 if (SvPOK (fh_or_path))
542 {
543 req->type = ix ? REQ_LSTAT : REQ_STAT;
544 req->data = newSVsv (fh_or_path);
545 req->dataptr = SvPV_nolen (req->data);
546 } 1261 }
547 else 1262 else
548 { 1263 {
549 req->type = REQ_FSTAT; 1264 /* read: check type and grow scalar as necessary */
550 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1265 SvUPGRADE (data, SVt_PV);
1266 if (SvLEN (data) >= SvCUR (data))
1267 svptr = SvGROW (data, len + dataoffset + 1);
1268 else if (SvCUR (data) < len + dataoffset)
1269 croak ("length + dataoffset outside of scalar, and cannot grow");
551 } 1270 }
552 1271
1272 {
1273 dREQ;
1274
1275 req->type = ix;
1276 req->sv1 = newSVsv (fh);
1277 req->int1 = fd;
1278 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1279 req->size = len;
553 req->callback = SvREFCNT_inc (callback); 1280 req->sv2 = SvREFCNT_inc (data);
1281 req->ptr2 = (char *)svptr + dataoffset;
1282 req->stroffset = dataoffset;
554 1283
555 send_req (req); 1284 if (!SvREADONLY (data))
556} 1285 {
1286 SvREADONLY_on (data);
1287 req->flags |= FLAG_SV2_RO_OFF;
1288 }
557 1289
1290 REQ_SEND;
1291 }
1292}
1293
558void 1294void
559aio_unlink(pathname,callback) 1295aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
560 SV * pathname 1296 ALIAS:
561 SV * callback 1297 aio_readlink = EIO_READLINK
562 PROTOTYPE: $$ 1298 aio_realpath = EIO_REALPATH
1299 PPCODE:
1300{
1301 dREQ;
1302
1303 req->type = ix;
1304 req_set_path1 (req, pathname);
1305
1306 REQ_SEND;
1307}
1308
1309void
1310aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1311 PPCODE:
1312{
1313 int ifd = s_fileno_croak (in_fh , 0);
1314 int ofd = s_fileno_croak (out_fh, 1);
1315 dREQ;
1316
1317 req->type = EIO_SENDFILE;
1318 req->sv1 = newSVsv (out_fh);
1319 req->int1 = ofd;
1320 req->sv2 = newSVsv (in_fh);
1321 req->int2 = ifd;
1322 req->offs = in_offset;
1323 req->size = length;
1324
1325 REQ_SEND;
1326}
1327
1328void
1329aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1330 PPCODE:
1331{
1332 int fd = s_fileno_croak (fh, 0);
1333 dREQ;
1334
1335 req->type = EIO_READAHEAD;
1336 req->sv1 = newSVsv (fh);
1337 req->int1 = fd;
1338 req->offs = offset;
1339 req->size = length;
1340
1341 REQ_SEND;
1342}
1343
1344void
1345aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1346 ALIAS:
1347 aio_stat = EIO_STAT
1348 aio_lstat = EIO_LSTAT
1349 aio_statvfs = EIO_STATVFS
1350 PPCODE:
1351{
1352 dREQ;
1353
1354 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1355
1356 REQ_SEND;
1357}
1358
1359UV
1360major (UV dev)
1361 ALIAS:
1362 minor = 1
563 CODE: 1363 CODE:
1364 RETVAL = ix ? major (dev) : minor (dev);
1365 OUTPUT:
1366 RETVAL
1367
1368UV
1369makedev (UV maj, UV min)
1370 CODE:
1371 RETVAL = makedev (maj, min);
1372 OUTPUT:
1373 RETVAL
1374
1375void
1376aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1377 PPCODE:
564{ 1378{
565 aio_req req; 1379 dREQ;
1380
1381 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1382 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1383 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1384
1385 REQ_SEND;
1386}
1387
1388void
1389aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1390 PPCODE:
1391{
1392 dREQ;
1393
1394 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1395 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1396
1397 REQ_SEND;
1398}
1399
1400void
1401aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1402 PPCODE:
1403{
1404 dREQ;
1405
1406 req->int2 = mode;
1407 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1408
1409 REQ_SEND;
1410}
1411
1412void
1413aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1414 PPCODE:
1415{
1416 dREQ;
1417
1418 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1419 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1420 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1421
1422 REQ_SEND;
1423}
1424
1425void
1426aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1427 PPCODE:
1428{
1429 dREQ;
566 1430
567 Newz (0, req, 1, aio_cb); 1431 req->type = EIO_READDIR;
1432 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1433
1434 if (flags & EIO_READDIR_DENTS)
1435 req->int1 |= EIO_READDIR_CUSTOM2;
1436
1437 req_set_path1 (req, pathname);
1438
1439 REQ_SEND;
1440}
1441
1442void
1443aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1444 PPCODE:
1445{
1446 dREQ;
1447
1448 req->type = EIO_MKDIR;
1449 req->int2 = mode;
1450 req_set_path1 (req, pathname);
1451
1452 REQ_SEND;
1453}
1454
1455void
1456aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1457 ALIAS:
1458 aio_unlink = EIO_UNLINK
1459 aio_rmdir = EIO_RMDIR
1460 aio_readdir = EIO_READDIR
1461 PPCODE:
1462{
1463 dREQ;
568 1464
569 if (!req) 1465 req->type = ix;
570 croak ("out of memory during aio_req allocation"); 1466 req_set_path1 (req, pathname);
1467
1468 REQ_SEND;
1469}
1470
1471void
1472aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1473 ALIAS:
1474 aio_link = EIO_LINK
1475 aio_symlink = EIO_SYMLINK
1476 aio_rename = EIO_RENAME
1477 PPCODE:
1478{
1479 eio_wd wd2 = 0;
1480 dREQ;
571 1481
572 req->type = REQ_UNLINK; 1482 req->type = ix;
573 req->data = newSVsv (pathname); 1483 req_set_path1 (req, oldpath);
574 req->dataptr = SvPV_nolen (req->data); 1484 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
575 req->callback = SvREFCNT_inc (callback); 1485 req->int3 = (long)wd2;
576 1486
577 send_req (req); 1487 REQ_SEND;
1488}
1489
1490void
1491aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1492 PPCODE:
1493{
1494 dREQ;
1495
1496 req->type = EIO_MKNOD;
1497 req->int2 = (mode_t)mode;
1498 req->offs = dev;
1499 req_set_path1 (req, pathname);
1500
1501 REQ_SEND;
1502}
1503
1504void
1505aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1506 ALIAS:
1507 aio_mtouch = EIO_MTOUCH
1508 aio_msync = EIO_MSYNC
1509 PPCODE:
1510{
1511 STRLEN svlen;
1512 char *svptr = SvPVbyte (data, svlen);
1513 UV len = SvUV (length);
1514
1515 if (offset < 0)
1516 offset += svlen;
1517
1518 if (offset < 0 || offset > svlen)
1519 croak ("offset outside of scalar");
1520
1521 if (!SvOK (length) || len + offset > svlen)
1522 len = svlen - offset;
1523
1524 {
1525 dREQ;
1526
1527 req->type = ix;
1528 req->sv2 = SvREFCNT_inc (data);
1529 req->ptr2 = (char *)svptr + offset;
1530 req->size = len;
1531 req->int1 = flags;
1532
1533 REQ_SEND;
1534 }
1535}
1536
1537void
1538aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1539 PPCODE:
1540{
1541 STRLEN svlen;
1542 char *svptr = SvPVbyte (data, svlen);
1543 UV len = SvUV (length);
1544
1545 if (offset < 0)
1546 offset += svlen;
1547
1548 if (offset < 0 || offset > svlen)
1549 croak ("offset outside of scalar");
1550
1551 if (!SvOK (length) || len + offset > svlen)
1552 len = svlen - offset;
1553
1554 {
1555 dREQ;
1556
1557 req->type = EIO_MLOCK;
1558 req->sv2 = SvREFCNT_inc (data);
1559 req->ptr2 = (char *)svptr + offset;
1560 req->size = len;
1561
1562 REQ_SEND;
1563 }
1564}
1565
1566void
1567aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1568 PPCODE:
1569{
1570 dREQ;
1571
1572 req->type = EIO_MLOCKALL;
1573 req->int1 = flags;
1574
1575 REQ_SEND;
1576}
1577
1578void
1579aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1580 PPCODE:
1581{
1582 int fd = s_fileno_croak (fh, 0);
1583 dREQ;
1584
1585 req->type = EIO_CUSTOM;
1586 req->sv1 = newSVsv (fh);
1587 req->int1 = fd;
1588
1589 req->feed = fiemap;
1590#if HAVE_FIEMAP
1591 /* keep our fingers crossed that the next two types are 64 bit */
1592 req->offs = start;
1593 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1594 req->int2 = flags;
1595 req->int3 = SvOK (count) ? SvIV (count) : -1;
1596#endif
1597
1598 REQ_SEND;
1599}
1600
1601void
1602aio_busy (double delay, SV *callback=&PL_sv_undef)
1603 PPCODE:
1604{
1605 dREQ;
1606
1607 req->type = EIO_BUSY;
1608 req->nv1 = delay < 0. ? 0. : delay;
1609
1610 REQ_SEND;
1611}
1612
1613void
1614aio_group (SV *callback=&PL_sv_undef)
1615 PPCODE:
1616{
1617 dREQ;
1618
1619 req->type = EIO_GROUP;
1620
1621 req_submit (req);
1622 XPUSHs (req_sv (req, aio_grp_stash));
1623}
1624
1625void
1626aio_nop (SV *callback=&PL_sv_undef)
1627 ALIAS:
1628 aio_nop = EIO_NOP
1629 aio_sync = EIO_SYNC
1630 PPCODE:
1631{
1632 dREQ;
1633
1634 req->type = ix;
1635
1636 REQ_SEND;
578} 1637}
579 1638
580int 1639int
1640aioreq_pri (int pri = 0)
1641 CODE:
1642 RETVAL = next_pri;
1643 if (items > 0)
1644 {
1645 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1646 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1647 next_pri = pri;
1648 }
1649 OUTPUT:
1650 RETVAL
1651
1652void
1653aioreq_nice (int nice = 0)
1654 CODE:
1655 nice = next_pri - nice;
1656 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1657 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1658 next_pri = nice;
1659
1660void
1661flush ()
1662 CODE:
1663 while (eio_nreqs ())
1664 {
1665 poll_wait ();
1666 poll_cb ();
1667 }
1668
1669int
1670poll ()
1671 CODE:
1672 poll_wait ();
1673 RETVAL = poll_cb ();
1674 OUTPUT:
1675 RETVAL
1676
1677int
581poll_fileno() 1678poll_fileno ()
1679 CODE:
1680 RETVAL = s_epipe_fd (&respipe);
1681 OUTPUT:
1682 RETVAL
1683
1684int
1685poll_cb (...)
582 PROTOTYPE: 1686 PROTOTYPE:
583 CODE: 1687 CODE:
584 RETVAL = respipe [0]; 1688 RETVAL = poll_cb ();
585 OUTPUT: 1689 OUTPUT:
586 RETVAL 1690 RETVAL
587 1691
1692void
1693poll_wait ()
1694 CODE:
1695 poll_wait ();
1696
588int 1697int
589poll_cb(...) 1698nreqs ()
590 PROTOTYPE:
591 CODE: 1699 CODE:
592 RETVAL = poll_cb (aTHX); 1700 RETVAL = eio_nreqs ();
593 OUTPUT: 1701 OUTPUT:
594 RETVAL 1702 RETVAL
595 1703
596void 1704int
597poll_wait() 1705nready ()
598 PROTOTYPE:
599 CODE: 1706 CODE:
600 if (nreqs)
601 poll_wait ();
602
603int
604nreqs()
605 PROTOTYPE:
606 CODE:
607 RETVAL = nreqs; 1707 RETVAL = eio_nready ();
608 OUTPUT: 1708 OUTPUT:
609 RETVAL 1709 RETVAL
610 1710
1711int
1712npending ()
1713 CODE:
1714 RETVAL = eio_npending ();
1715 OUTPUT:
1716 RETVAL
1717
1718int
1719nthreads ()
1720 CODE:
1721 RETVAL = eio_nthreads ();
1722 OUTPUT:
1723 RETVAL
1724
1725int
1726fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1727 CODE:
1728 RETVAL = posix_fadvise (fh, offset, length, advice);
1729 OUTPUT:
1730 RETVAL
1731
1732IV
1733sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1734 CODE:
1735 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1736 OUTPUT:
1737 RETVAL
1738
1739void
1740mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1741 PPCODE:
1742 sv_unmagic (scalar, MMAP_MAGIC);
1743{
1744 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1745 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1746 if (addr == (void *)-1)
1747 XSRETURN_NO;
1748
1749 sv_force_normal (scalar);
1750
1751 /* we store the length in mg_obj, as namlen is I32 :/ */
1752 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1753 ->mg_obj = (SV *)length;
1754
1755 SvUPGRADE (scalar, SVt_PV); /* nop... */
1756
1757 if (!(prot & PROT_WRITE))
1758 SvREADONLY_on (scalar);
1759
1760 if (SvLEN (scalar))
1761 Safefree (SvPVX (scalar));
1762
1763 SvPVX (scalar) = (char *)addr;
1764 SvCUR_set (scalar, length);
1765 SvLEN_set (scalar, 0);
1766 SvPOK_only (scalar);
1767
1768 XSRETURN_YES;
1769}
1770
1771void
1772munmap (SV *scalar)
1773 CODE:
1774 sv_unmagic (scalar, MMAP_MAGIC);
1775
1776int
1777madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1778 ALIAS:
1779 mprotect = 1
1780 CODE:
1781{
1782 STRLEN svlen;
1783 void *addr = SvPVbyte (scalar, svlen);
1784 size_t len = SvUV (length);
1785
1786 if (offset < 0)
1787 offset += svlen;
1788
1789 if (offset < 0 || offset > svlen)
1790 croak ("offset outside of scalar");
1791
1792 if (!SvOK (length) || len + offset > svlen)
1793 len = svlen - offset;
1794
1795 addr = (void *)(((intptr_t)addr) + offset);
1796 eio_page_align (&addr, &len);
1797
1798 switch (ix)
1799 {
1800 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1801 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1802 }
1803}
1804 OUTPUT:
1805 RETVAL
1806
1807int
1808munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1809 CODE:
1810{
1811 STRLEN svlen;
1812 void *addr = SvPVbyte (scalar, svlen);
1813 size_t len = SvUV (length);
1814
1815 if (offset < 0)
1816 offset += svlen;
1817
1818 if (offset < 0 || offset > svlen)
1819 croak ("offset outside of scalar");
1820
1821 if (!SvOK (length) || len + offset > svlen)
1822 len = svlen - offset;
1823
1824 addr = (void *)(((intptr_t)addr) + offset);
1825 eio_page_align (&addr, &len);
1826#if _POSIX_MEMLOCK_RANGE
1827 RETVAL = munlock (addr, len);
1828#else
1829 RETVAL = EIO_ENOSYS ();
1830#endif
1831}
1832 OUTPUT:
1833 RETVAL
1834
1835int
1836munlockall ()
1837 CODE:
1838#if _POSIX_MEMLOCK
1839 munlockall ();
1840#else
1841 RETVAL = EIO_ENOSYS ();
1842#endif
1843 OUTPUT:
1844 RETVAL
1845
1846int
1847splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1848 CODE:
1849{
1850#if HAVE_LINUX_SPLICE
1851 loff_t off_in_, off_out_;
1852 RETVAL = splice (
1853 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1854 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1855 length, flags
1856 );
1857#else
1858 RETVAL = EIO_ENOSYS ();
1859#endif
1860}
1861 OUTPUT:
1862 RETVAL
1863
1864int
1865tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1866 CODE:
1867#if HAVE_LINUX_SPLICE
1868 RETVAL = tee (rfh, wfh, length, flags);
1869#else
1870 RETVAL = EIO_ENOSYS ();
1871#endif
1872 OUTPUT:
1873 RETVAL
1874
1875void _on_next_submit (SV *cb)
1876 CODE:
1877 SvREFCNT_dec (on_next_submit);
1878 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1879
1880PROTOTYPES: DISABLE
1881
1882MODULE = IO::AIO PACKAGE = IO::AIO::WD
1883
1884BOOT:
1885{
1886 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1887 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1888}
1889
1890void
1891DESTROY (SV *self)
1892 CODE:
1893{
1894 aio_wd wd = SvAIO_WD (self);
1895#if HAVE_AT
1896 {
1897 SV *callback = &PL_sv_undef;
1898 dREQ; /* clobbers next_pri :/ */
1899 next_pri = req->pri; /* restore next_pri */
1900 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1901 req->type = EIO_WD_CLOSE;
1902 req->wd = wd;
1903 REQ_SEND;
1904 }
1905#else
1906 eio_wd_close_sync (wd);
1907#endif
1908}
1909
1910MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1911
1912void
1913cancel (aio_req_ornot req)
1914 CODE:
1915 eio_cancel (req);
1916
1917void
1918cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1919 PPCODE:
1920{
1921 if (GIMME_V != G_VOID)
1922 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1923
1924 if (items > 1)
1925 {
1926 SV *cb_cv =get_cb (callback);
1927
1928 SvREFCNT_dec (req->callback);
1929 req->callback = SvREFCNT_inc (cb_cv);
1930 }
1931}
1932
1933MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1934
1935void
1936add (aio_req grp, ...)
1937 PPCODE:
1938{
1939 int i;
1940
1941 if (grp->int1 == 2)
1942 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1943
1944 for (i = 1; i < items; ++i )
1945 {
1946 aio_req req;
1947
1948 if (GIMME_V != G_VOID)
1949 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1950
1951 req = SvAIO_REQ (ST (i));
1952
1953 if (req)
1954 eio_grp_add (grp, req);
1955 }
1956}
1957
1958void
1959cancel_subs (aio_req_ornot req)
1960 CODE:
1961 req_cancel_subs (req);
1962
1963void
1964result (aio_req grp, ...)
1965 CODE:
1966{
1967 int i;
1968 AV *av;
1969
1970 grp->errorno = errno;
1971
1972 av = newAV ();
1973 av_extend (av, items - 1);
1974
1975 for (i = 1; i < items; ++i )
1976 av_push (av, newSVsv (ST (i)));
1977
1978 SvREFCNT_dec (grp->sv1);
1979 grp->sv1 = (SV *)av;
1980}
1981
1982void
1983errno (aio_req grp, int errorno = errno)
1984 CODE:
1985 grp->errorno = errorno;
1986
1987void
1988limit (aio_req grp, int limit)
1989 CODE:
1990 eio_grp_limit (grp, limit);
1991
1992void
1993feed (aio_req grp, SV *callback=&PL_sv_undef)
1994 CODE:
1995{
1996 SvREFCNT_dec (grp->sv2);
1997 grp->sv2 = newSVsv (callback);
1998 grp->feed = aio_grp_feed;
1999
2000 if (grp->int2 <= 0)
2001 grp->int2 = 2;
2002
2003 eio_grp_limit (grp, grp->int2);
2004}
2005

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