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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.28 by root, Wed Aug 17 05:06:59 2005 UTC vs.
Revision 1.216 by root, Wed Jul 25 16:12:28 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
29 144
30enum { 145/* defines all sorts of constants to 0 unless they are already defined */
31 REQ_QUIT, 146#include "def0.h"
32 REQ_OPEN, REQ_CLOSE,
33 REQ_READ, REQ_WRITE, REQ_READAHEAD,
34 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35 REQ_FSYNC, REQ_FDATASYNC,
36 REQ_UNLINK, REQ_RMDIR,
37 REQ_SYMLINK,
38};
39 147
40typedef struct aio_cb { 148#ifndef makedev
41 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
42 157
43 int type; 158#ifndef PAGESIZE
159# define PAGESIZE sysconf (_SC_PAGESIZE)
160#endif
44 161
45 int fd; 162/*****************************************************************************/
46 off_t offset;
47 size_t length;
48 ssize_t result;
49 mode_t mode; /* open */
50 int errorno;
51 SV *data, *callback, *fh;
52 void *dataptr, *data2ptr;
53 STRLEN dataoffset;
54
55 Stat_t *statdata;
56} aio_cb;
57
58typedef aio_cb *aio_req;
59
60static int started;
61static volatile int nreqs;
62static int max_outstanding = 1<<30;
63static int respipe [2];
64
65static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
66static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
67static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68
69static volatile aio_req reqs, reqe; /* queue start, queue end */
70static volatile aio_req ress, rese; /* queue start, queue end */
71
72static void free_req (aio_req req)
73{
74 if (req->data)
75 SvREFCNT_dec (req->data);
76
77 if (req->fh)
78 SvREFCNT_dec (req->fh);
79
80 if (req->statdata)
81 Safefree (req->statdata);
82
83 if (req->callback)
84 SvREFCNT_dec (req->callback);
85
86 Safefree (req);
87}
88 163
89static void 164static void
90poll_wait () 165fiemap (eio_req *req)
91{ 166{
92 if (nreqs && !ress) 167 req->result = -1;
93 {
94 fd_set rfd;
95 FD_ZERO(&rfd);
96 FD_SET(respipe [0], &rfd);
97 168
98 select (respipe [0] + 1, &rfd, 0, 0, 0); 169#if HAVE_FIEMAP
99 }
100}
101
102static int
103poll_cb ()
104{
105 dSP;
106 int count = 0; 170 int count = req->int3;
107 int do_croak = 0; 171
108 aio_req req; 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 */
109 177
110 for (;;) 178 for (;;)
111 { 179 {
112 pthread_mutex_lock (&reslock); 180 struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
113 req = ress; 181 errno = ENOMEM;
114
115 if (req) 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/*****************************************************************************/
221
222enum {
223 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
224};
225
226typedef eio_req *aio_req;
227typedef eio_req *aio_req_ornot;
228typedef eio_wd aio_wd;
229
230static SV *on_next_submit;
231static int next_pri = EIO_PRI_DEFAULT;
232static int max_outstanding;
233
234static s_epipe respipe;
235
236static void req_destroy (aio_req req);
237static void req_cancel (aio_req req);
238
239static void
240want_poll (void)
241{
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)
258 {
259 req->self = (SV *)newHV ();
260 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
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 }
335}
336
337static int
338req_invoke (eio_req *req)
339{
340 if (req->flags & FLAG_SV2_RO_OFF)
341 SvREADONLY_off (req->sv2);
342
343 if (!EIO_CANCELLED (req) && req->callback)
344 {
345 dSP;
346 static SV *sv_result_cache; /* caches the result integer SV */
347 SV *sv_result;
348
349 ENTER;
350 SAVETMPS;
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))
116 { 356 {
117 ress = req->next; 357 sv_result = sv_result_cache; sv_result_cache = 0;
118 358 SvIV_set (sv_result, req->result);
119 if (!ress) 359 SvIOK_only (sv_result);
120 {
121 rese = 0;
122
123 /* read any signals sent by the worker threads */
124 char buf [32];
125 while (read (respipe [0], buf, 32) == 32)
126 ;
127 }
128 }
129
130 pthread_mutex_unlock (&reslock);
131
132 if (!req)
133 break;
134
135 nreqs--;
136
137 if (req->type == REQ_QUIT)
138 started--;
139 else
140 {
141 int errorno = errno;
142 errno = req->errorno;
143
144 if (req->type == REQ_READ)
145 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
146
147 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
148 SvREADONLY_off (req->data);
149
150 if (req->statdata)
151 {
152 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
153 PL_laststatval = req->result;
154 PL_statcache = *(req->statdata);
155 }
156
157 ENTER;
158 PUSHMARK (SP);
159 XPUSHs (sv_2mortal (newSViv (req->result)));
160
161 if (req->type == REQ_OPEN)
162 {
163 /* convert fd to fh */
164 SV *fh;
165
166 PUTBACK;
167 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
168 SPAGAIN;
169
170 fh = SvREFCNT_inc (POPs);
171
172 PUSHMARK (SP);
173 XPUSHs (sv_2mortal (fh));
174 }
175
176 if (SvOK (req->callback))
177 {
178 PUTBACK;
179 call_sv (req->callback, G_VOID | G_EVAL);
180 SPAGAIN;
181
182 if (SvTRUE (ERRSV))
183 {
184 free_req (req);
185 croak (0);
186 }
187 }
188
189 LEAVE;
190
191 errno = errorno;
192 count++;
193 }
194
195 free_req (req);
196 }
197
198 return count;
199}
200
201static void *aio_proc(void *arg);
202
203static void
204start_thread (void)
205{
206 sigset_t fullsigset, oldsigset;
207 pthread_t tid;
208 pthread_attr_t attr;
209
210 pthread_attr_init (&attr);
211 pthread_attr_setstacksize (&attr, STACKSIZE);
212 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
213
214 sigfillset (&fullsigset);
215 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
216
217 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
218 started++;
219
220 sigprocmask (SIG_SETMASK, &oldsigset, 0);
221}
222
223static void
224send_req (aio_req req)
225{
226 nreqs++;
227
228 pthread_mutex_lock (&reqlock);
229
230 req->next = 0;
231
232 if (reqe)
233 {
234 reqe->next = req;
235 reqe = req;
236 }
237 else
238 reqe = reqs = req;
239
240 pthread_cond_signal (&reqwait);
241 pthread_mutex_unlock (&reqlock);
242
243 if (nreqs > max_outstanding)
244 for (;;)
245 {
246 poll_cb ();
247
248 if (nreqs <= max_outstanding)
249 break;
250
251 poll_wait ();
252 }
253}
254
255static void
256end_thread (void)
257{
258 aio_req req;
259 Newz (0, req, 1, aio_cb);
260 req->type = REQ_QUIT;
261
262 send_req (req);
263}
264
265static void min_parallel (int nthreads)
266{
267 while (nthreads > started)
268 start_thread ();
269}
270
271static void max_parallel (int nthreads)
272{
273 int cur = started;
274
275 while (cur > nthreads)
276 {
277 end_thread ();
278 cur--;
279 }
280
281 while (started > nthreads)
282 {
283 poll_wait ();
284 poll_cb ();
285 }
286}
287
288static void create_pipe ()
289{
290 if (pipe (respipe))
291 croak ("unable to initialize result pipe");
292
293 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
294 croak ("cannot set result pipe to nonblocking mode");
295
296 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
297 croak ("cannot set result pipe to nonblocking mode");
298}
299
300static void atfork_prepare (void)
301{
302 pthread_mutex_lock (&reqlock);
303 pthread_mutex_lock (&reslock);
304}
305
306static void atfork_parent (void)
307{
308 pthread_mutex_unlock (&reslock);
309 pthread_mutex_unlock (&reqlock);
310}
311
312static void atfork_child (void)
313{
314 aio_req prv;
315
316 int restart = started;
317 started = 0;
318
319 while (reqs)
320 {
321 prv = reqs;
322 reqs = prv->next;
323 free_req (prv);
324 }
325
326 reqs = reqe = 0;
327
328 while (ress)
329 {
330 prv = ress;
331 ress = prv->next;
332 free_req (prv);
333 }
334
335 ress = rese = 0;
336
337 atfork_parent ();
338
339 min_parallel (restart);
340}
341
342/*****************************************************************************/
343/* work around various missing functions */
344
345#if !HAVE_PREADWRITE
346# define pread aio_pread
347# define pwrite aio_pwrite
348
349/*
350 * make our pread/pwrite safe against themselves, but not against
351 * normal read/write by using a mutex. slows down execution a lot,
352 * but that's your problem, not mine.
353 */
354static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
355
356static ssize_t
357pread (int fd, void *buf, size_t count, off_t offset)
358{
359 ssize_t res;
360 off_t ooffset;
361
362 pthread_mutex_lock (&iolock);
363 ooffset = lseek (fd, 0, SEEK_CUR);
364 lseek (fd, offset, SEEK_SET);
365 res = read (fd, buf, count);
366 lseek (fd, ooffset, SEEK_SET);
367 pthread_mutex_unlock (&iolock);
368
369 return res;
370}
371
372static ssize_t
373pwrite (int fd, void *buf, size_t count, off_t offset)
374{
375 ssize_t res;
376 off_t ooffset;
377
378 pthread_mutex_lock (&iolock);
379 ooffset = lseek (fd, 0, SEEK_CUR);
380 lseek (fd, offset, SEEK_SET);
381 res = write (fd, buf, count);
382 lseek (fd, offset, SEEK_SET);
383 pthread_mutex_unlock (&iolock);
384
385 return res;
386}
387#endif
388
389#if !HAVE_FDATASYNC
390# define fdatasync fsync
391#endif
392
393#if !HAVE_READAHEAD
394# define readahead aio_readahead
395
396static char readahead_buf[4096];
397
398static ssize_t
399readahead (int fd, off_t offset, size_t count)
400{
401 while (count > 0)
402 {
403 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
404
405 pread (fd, readahead_buf, len, offset);
406 offset += len;
407 count -= len;
408 }
409
410 errno = 0;
411}
412#endif
413
414/*****************************************************************************/
415
416static void *
417aio_proc (void *thr_arg)
418{
419 aio_req req;
420 int type;
421
422 do
423 {
424 pthread_mutex_lock (&reqlock);
425
426 for (;;)
427 {
428 req = reqs;
429
430 if (reqs)
431 {
432 reqs = reqs->next;
433 if (!reqs) reqe = 0;
434 }
435
436 if (req)
437 break;
438
439 pthread_cond_wait (&reqwait, &reqlock);
440 }
441
442 pthread_mutex_unlock (&reqlock);
443
444 errno = 0; /* strictly unnecessary */
445
446 type = req->type;
447
448 switch (type)
449 {
450 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
451 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
452
453 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
454
455 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
456 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
457 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
458
459 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
460 case REQ_CLOSE: req->result = close (req->fd); break;
461 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
462 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
463 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
464
465 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
466 case REQ_FSYNC: req->result = fsync (req->fd); break;
467
468 case REQ_QUIT:
469 break;
470
471 default:
472 req->result = ENOSYS;
473 break;
474 }
475
476 req->errorno = errno;
477
478 pthread_mutex_lock (&reslock);
479
480 req->next = 0;
481
482 if (rese)
483 {
484 rese->next = req;
485 rese = req;
486 } 360 }
487 else 361 else
488 { 362 {
489 rese = ress = req; 363 sv_result = newSViv (req->result);
490 364 SvREADONLY_on (sv_result);
491 /* write a dummy byte to the pipe so fh becomes ready */
492 write (respipe [1], &respipe, 1);
493 } 365 }
494 366
495 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;
496 } 612 }
497 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);
498 735
499 return 0; 736 return 0;
500} 737}
501 738
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
502#define dREQ \ 772#define dREQ \
503 aio_req req; \ 773 aio_req req = dreq (callback); \
774
775#define REQ_SEND \
776 PUTBACK; \
777 req_submit (req); \
778 SPAGAIN; \
504 \ 779 \
505 if (SvOK (callback) && !SvROK (callback)) \ 780 if (GIMME_V != G_VOID) \
506 croak ("clalback must be undef or of reference type"); \ 781 XPUSHs (req_sv (req, aio_req_stash));
507 \ 782
508 Newz (0, req, 1, aio_cb); \ 783ecb_inline void
509 if (!req) \ 784req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
510 croak ("out of memory during aio_req allocation"); \ 785{
511 \ 786 if (expect_false (SvROK (path)))
512 req->callback = newSVsv (callback); 787 {
513 788 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
514MODULE = IO::AIO PACKAGE = IO::AIO 849MODULE = IO::AIO PACKAGE = IO::AIO
515 850
516PROTOTYPES: ENABLE 851PROTOTYPES: ENABLE
517 852
518BOOT: 853BOOT:
519{ 854{
520 create_pipe (); 855 static const struct {
521 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 856 const char *name;
522} 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 },
523 862
863 /* you have to re-run ./gendef0 after adding/Removing any constants here */
864
865 const_iv (ENOSYS)
866 const_iv (EXDEV)
867 const_iv (EBADR)
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 const_eio (FALLOC_FL_PUNCH_HOLE)
989
990 const_eio (READDIR_DENTS)
991 const_eio (READDIR_DIRS_FIRST)
992 const_eio (READDIR_STAT_ORDER)
993 const_eio (READDIR_FOUND_UNKNOWN)
994
995 const_eio (DT_UNKNOWN)
996 const_eio (DT_FIFO)
997 const_eio (DT_CHR)
998 const_eio (DT_DIR)
999 const_eio (DT_BLK)
1000 const_eio (DT_REG)
1001 const_eio (DT_LNK)
1002 const_eio (DT_SOCK)
1003 const_eio (DT_WHT)
1004 };
1005
1006 aio_stash = gv_stashpv ("IO::AIO" , 1);
1007 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1008 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1009 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1010
1011 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1012 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1013
1014 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1015
1016 reinit ();
1017}
1018
524void 1019void
525min_parallel(nthreads) 1020reinit ()
526 int nthreads 1021 PROTOTYPE:
1022
1023void
1024max_poll_reqs (unsigned int nreqs)
527 PROTOTYPE: $ 1025 PROTOTYPE: $
1026 CODE:
1027 eio_set_max_poll_reqs (nreqs);
528 1028
529void 1029void
530max_parallel(nthreads) 1030max_poll_time (double nseconds)
531 int nthreads
532 PROTOTYPE: $ 1031 PROTOTYPE: $
533
534int
535max_outstanding(nreqs)
536 int nreqs
537 PROTOTYPE: $
538 CODE: 1032 CODE:
539 RETVAL = max_outstanding; 1033 eio_set_max_poll_time (nseconds);
1034
1035void
1036min_parallel (unsigned int nthreads)
1037 PROTOTYPE: $
1038 CODE:
1039 eio_set_min_parallel (nthreads);
1040
1041void
1042max_parallel (unsigned int nthreads)
1043 PROTOTYPE: $
1044 CODE:
1045 eio_set_max_parallel (nthreads);
1046
1047void
1048max_idle (unsigned int nthreads)
1049 PROTOTYPE: $
1050 CODE:
1051 eio_set_max_idle (nthreads);
1052
1053void
1054idle_timeout (unsigned int seconds)
1055 PROTOTYPE: $
1056 CODE:
1057 eio_set_idle_timeout (seconds);
1058
1059void
1060max_outstanding (unsigned int maxreqs)
1061 PROTOTYPE: $
1062 CODE:
540 max_outstanding = nreqs; 1063 max_outstanding = maxreqs;
541 1064
542void 1065void
543aio_open(pathname,flags,mode,callback=&PL_sv_undef) 1066aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
544 SV * pathname
545 int flags
546 int mode
547 SV * callback
548 PROTOTYPE: $$$;$
549 CODE: 1067 PPCODE:
550{ 1068{
551 dREQ; 1069 dREQ;
552 1070
1071 req->type = EIO_WD_OPEN;
1072 req_set_path1 (req, pathname);
1073
1074 REQ_SEND;
1075}
1076
1077void
1078aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1079 PPCODE:
1080{
1081 dREQ;
1082
553 req->type = REQ_OPEN; 1083 req->type = EIO_OPEN;
554 req->data = newSVsv (pathname); 1084 req_set_path1 (req, pathname);
555 req->dataptr = SvPVbyte_nolen (req->data);
556 req->fd = flags; 1085 req->int1 = flags;
557 req->mode = mode; 1086 req->int2 = mode;
558 1087
559 send_req (req); 1088 REQ_SEND;
560} 1089}
561 1090
562void 1091void
563aio_close(fh,callback=&PL_sv_undef) 1092aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
564 SV * fh
565 SV * callback
566 PROTOTYPE: $;$
567 ALIAS: 1093 ALIAS:
568 aio_close = REQ_CLOSE
569 aio_fsync = REQ_FSYNC 1094 aio_fsync = EIO_FSYNC
570 aio_fdatasync = REQ_FDATASYNC 1095 aio_fdatasync = EIO_FDATASYNC
1096 aio_syncfs = EIO_SYNCFS
571 CODE: 1097 PPCODE:
572{ 1098{
1099 int fd = s_fileno_croak (fh, 0);
573 dREQ; 1100 dREQ;
574 1101
575 req->type = ix; 1102 req->type = ix;
576 req->fh = newSVsv (fh); 1103 req->sv1 = newSVsv (fh);
577 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1104 req->int1 = fd;
578 1105
579 send_req (req); 1106 REQ_SEND;
580} 1107}
581 1108
582void 1109void
1110aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1111 PPCODE:
1112{
1113 int fd = s_fileno_croak (fh, 0);
1114 dREQ;
1115
1116 req->type = EIO_SYNC_FILE_RANGE;
1117 req->sv1 = newSVsv (fh);
1118 req->int1 = fd;
1119 req->offs = offset;
1120 req->size = nbytes;
1121 req->int2 = flags;
1122
1123 REQ_SEND;
1124}
1125
1126void
1127aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1128 PPCODE:
1129{
1130 int fd = s_fileno_croak (fh, 0);
1131 dREQ;
1132
1133 req->type = EIO_FALLOCATE;
1134 req->sv1 = newSVsv (fh);
1135 req->int1 = fd;
1136 req->int2 = mode;
1137 req->offs = offset;
1138 req->size = len;
1139
1140 REQ_SEND;
1141}
1142
1143void
1144aio_close (SV *fh, SV *callback=&PL_sv_undef)
1145 PPCODE:
1146{
1147 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1148 int fd = s_fileno_croak (fh, 0);
1149 dREQ;
1150
1151 if (expect_false (close_fd < 0))
1152 {
1153 int pipefd [2];
1154
1155 if (
1156#ifdef _WIN32
1157 _pipe (pipefd, 1, _O_BINARY) < 0
1158#else
1159 pipe (pipefd) < 0
1160 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1161#endif
1162 || close (pipefd [1]) < 0
1163 )
1164 abort (); /*D*/
1165
1166 close_fd = pipefd [0];
1167 }
1168
1169 req->type = EIO_DUP2;
1170 req->int1 = close_fd;
1171 req->sv2 = newSVsv (fh);
1172 req->int2 = fd;
1173
1174 REQ_SEND;
1175}
1176
1177void
1178aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1179 PPCODE:
1180{
1181 int fd = s_fileno_croak (fh, 0);
1182 dREQ;
1183
1184 req->type = EIO_SEEK;
1185 req->sv1 = newSVsv (fh);
1186 req->int1 = fd;
1187 req->offs = SvVAL64 (offset);
1188 req->int2 = whence;
1189
1190 REQ_SEND;
1191}
1192
1193void
583aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1194aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
584 SV * fh
585 UV offset
586 IV length
587 SV * data
588 IV dataoffset
589 SV * callback
590 ALIAS: 1195 ALIAS:
591 aio_read = REQ_READ 1196 aio_read = EIO_READ
592 aio_write = REQ_WRITE 1197 aio_write = EIO_WRITE
593 PROTOTYPE: $$$$$;$
594 CODE: 1198 PPCODE:
595{ 1199{
596 aio_req req;
597 STRLEN svlen; 1200 STRLEN svlen;
1201 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
598 char *svptr = SvPVbyte (data, svlen); 1202 char *svptr = SvPVbyte (data, svlen);
599 1203 UV len = SvUV (length);
600 SvUPGRADE (data, SVt_PV);
601 SvPOK_on (data);
602 1204
603 if (dataoffset < 0) 1205 if (dataoffset < 0)
604 dataoffset += svlen; 1206 dataoffset += svlen;
605 1207
606 if (dataoffset < 0 || dataoffset > svlen) 1208 if (dataoffset < 0 || dataoffset > svlen)
607 croak ("data offset outside of string"); 1209 croak ("dataoffset outside of data scalar");
608 1210
609 if (ix == REQ_WRITE) 1211 if (ix == EIO_WRITE)
610 { 1212 {
611 /* write: check length and adjust. */ 1213 /* write: check length and adjust. */
612 if (length < 0 || length + dataoffset > svlen) 1214 if (!SvOK (length) || len + dataoffset > svlen)
613 length = svlen - dataoffset; 1215 len = svlen - dataoffset;
614 } 1216 }
615 else 1217 else
616 { 1218 {
617 /* read: grow scalar as necessary */ 1219 /* read: check type and grow scalar as necessary */
1220 SvUPGRADE (data, SVt_PV);
1221 if (SvLEN (data) >= SvCUR (data))
618 svptr = SvGROW (data, length + dataoffset); 1222 svptr = SvGROW (data, len + dataoffset + 1);
1223 else if (SvCUR (data) < len + dataoffset)
1224 croak ("length + dataoffset outside of scalar, and cannot grow");
619 } 1225 }
620
621 if (length < 0)
622 croak ("length must not be negative");
623 1226
624 { 1227 {
625 dREQ; 1228 dREQ;
626 1229
627 req->type = ix; 1230 req->type = ix;
628 req->fh = newSVsv (fh); 1231 req->sv1 = newSVsv (fh);
629 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1232 req->int1 = fd;
630 : IoOFP (sv_2io (fh))); 1233 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
631 req->offset = offset; 1234 req->size = len;
632 req->length = length;
633 req->data = SvREFCNT_inc (data); 1235 req->sv2 = SvREFCNT_inc (data);
634 req->dataptr = (char *)svptr + dataoffset; 1236 req->ptr2 = (char *)svptr + dataoffset;
1237 req->stroffset = dataoffset;
635 1238
636 if (!SvREADONLY (data)) 1239 if (!SvREADONLY (data))
637 { 1240 {
638 SvREADONLY_on (data); 1241 SvREADONLY_on (data);
639 req->data2ptr = (void *)data; 1242 req->flags |= FLAG_SV2_RO_OFF;
640 } 1243 }
641 1244
642 send_req (req); 1245 REQ_SEND;
643 } 1246 }
644} 1247}
645 1248
646void 1249void
647aio_readahead(fh,offset,length,callback=&PL_sv_undef) 1250aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
648 SV * fh 1251 ALIAS:
649 UV offset 1252 aio_readlink = EIO_READLINK
650 IV length 1253 aio_realpath = EIO_REALPATH
651 SV * callback
652 PROTOTYPE: $$$;$
653 CODE: 1254 PPCODE:
654{ 1255{
1256 dREQ;
1257
1258 req->type = ix;
1259 req_set_path1 (req, pathname);
1260
1261 REQ_SEND;
1262}
1263
1264void
1265aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1266 PPCODE:
1267{
1268 int ifd = s_fileno_croak (in_fh , 0);
1269 int ofd = s_fileno_croak (out_fh, 1);
655 dREQ; 1270 dREQ;
656 1271
1272 req->type = EIO_SENDFILE;
1273 req->sv1 = newSVsv (out_fh);
1274 req->int1 = ofd;
1275 req->sv2 = newSVsv (in_fh);
1276 req->int2 = ifd;
1277 req->offs = in_offset;
1278 req->size = length;
1279
1280 REQ_SEND;
1281}
1282
1283void
1284aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1285 PPCODE:
1286{
1287 int fd = s_fileno_croak (fh, 0);
1288 dREQ;
1289
657 req->type = REQ_READAHEAD; 1290 req->type = EIO_READAHEAD;
658 req->fh = newSVsv (fh); 1291 req->sv1 = newSVsv (fh);
659 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1292 req->int1 = fd;
660 req->offset = offset; 1293 req->offs = offset;
661 req->length = length; 1294 req->size = length;
662 1295
663 send_req (req); 1296 REQ_SEND;
664} 1297}
665 1298
666void 1299void
667aio_stat(fh_or_path,callback=&PL_sv_undef) 1300aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
668 SV * fh_or_path
669 SV * callback
670 ALIAS: 1301 ALIAS:
671 aio_stat = REQ_STAT 1302 aio_stat = EIO_STAT
672 aio_lstat = REQ_LSTAT 1303 aio_lstat = EIO_LSTAT
1304 aio_statvfs = EIO_STATVFS
1305 PPCODE:
1306{
1307 dREQ;
1308
1309 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1310
1311 REQ_SEND;
1312}
1313
1314UV
1315major (UV dev)
1316 ALIAS:
1317 minor = 1
673 CODE: 1318 CODE:
1319 RETVAL = ix ? major (dev) : minor (dev);
1320 OUTPUT:
1321 RETVAL
1322
1323UV
1324makedev (UV maj, UV min)
1325 CODE:
1326 RETVAL = makedev (maj, min);
1327 OUTPUT:
1328 RETVAL
1329
1330void
1331aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1332 PPCODE:
674{ 1333{
675 dREQ; 1334 dREQ;
676 1335
677 New (0, req->statdata, 1, Stat_t); 1336 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
678 if (!req->statdata) 1337 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
679 { 1338 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
680 free_req (req);
681 croak ("out of memory during aio_req->statdata allocation");
682 }
683 1339
684 if (SvPOK (fh_or_path)) 1340 REQ_SEND;
685 {
686 req->type = ix;
687 req->data = newSVsv (fh_or_path);
688 req->dataptr = SvPVbyte_nolen (req->data);
689 }
690 else
691 {
692 req->type = REQ_FSTAT;
693 req->fh = newSVsv (fh_or_path);
694 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
695 }
696
697 send_req (req);
698} 1341}
699 1342
700void 1343void
1344aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1345 PPCODE:
1346{
1347 dREQ;
1348
1349 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1350 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1351
1352 REQ_SEND;
1353}
1354
1355void
1356aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1357 PPCODE:
1358{
1359 dREQ;
1360
1361 req->int2 = mode;
1362 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1363
1364 REQ_SEND;
1365}
1366
1367void
1368aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1369 PPCODE:
1370{
1371 dREQ;
1372
1373 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1374 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1375 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1376
1377 REQ_SEND;
1378}
1379
1380void
1381aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1382 PPCODE:
1383{
1384 dREQ;
1385
1386 req->type = EIO_READDIR;
1387 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1388
1389 if (flags & EIO_READDIR_DENTS)
1390 req->int1 |= EIO_READDIR_CUSTOM2;
1391
1392 req_set_path1 (req, pathname);
1393
1394 REQ_SEND;
1395}
1396
1397void
1398aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1399 PPCODE:
1400{
1401 dREQ;
1402
1403 req->type = EIO_MKDIR;
1404 req->int2 = mode;
1405 req_set_path1 (req, pathname);
1406
1407 REQ_SEND;
1408}
1409
1410void
701aio_unlink(pathname,callback=&PL_sv_undef) 1411aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
702 SV * pathname
703 SV * callback
704 ALIAS: 1412 ALIAS:
705 aio_unlink = REQ_UNLINK 1413 aio_unlink = EIO_UNLINK
706 aio_rmdir = REQ_RMDIR 1414 aio_rmdir = EIO_RMDIR
1415 aio_readdir = EIO_READDIR
707 CODE: 1416 PPCODE:
708{ 1417{
709 dREQ; 1418 dREQ;
710 1419
711 req->type = ix; 1420 req->type = ix;
712 req->data = newSVsv (pathname); 1421 req_set_path1 (req, pathname);
713 req->dataptr = SvPVbyte_nolen (req->data);
714
715 send_req (req);
716}
717 1422
1423 REQ_SEND;
1424}
1425
718void 1426void
719aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1427aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
720 SV * oldpath 1428 ALIAS:
721 SV * newpath 1429 aio_link = EIO_LINK
722 SV * callback 1430 aio_symlink = EIO_SYMLINK
1431 aio_rename = EIO_RENAME
723 CODE: 1432 PPCODE:
724{ 1433{
1434 eio_wd wd2 = 0;
725 dREQ; 1435 dREQ;
726 1436
727 req->type = REQ_SYMLINK; 1437 req->type = ix;
728 req->fh = newSVsv (oldpath); 1438 req_set_path1 (req, oldpath);
729 req->data2ptr = SvPVbyte_nolen (req->fh); 1439 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
730 req->data = newSVsv (newpath); 1440 req->int3 = (long)wd2;
731 req->dataptr = SvPVbyte_nolen (req->data);
732 1441
733 send_req (req); 1442 REQ_SEND;
734} 1443}
735 1444
736void 1445void
737flush() 1446aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
738 PROTOTYPE: 1447 PPCODE:
1448{
1449 dREQ;
1450
1451 req->type = EIO_MKNOD;
1452 req->int2 = (mode_t)mode;
1453 req->offs = dev;
1454 req_set_path1 (req, pathname);
1455
1456 REQ_SEND;
1457}
1458
1459void
1460aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1461 ALIAS:
1462 aio_mtouch = EIO_MTOUCH
1463 aio_msync = EIO_MSYNC
1464 PPCODE:
1465{
1466 STRLEN svlen;
1467 char *svptr = SvPVbyte (data, svlen);
1468 UV len = SvUV (length);
1469
1470 if (offset < 0)
1471 offset += svlen;
1472
1473 if (offset < 0 || offset > svlen)
1474 croak ("offset outside of scalar");
1475
1476 if (!SvOK (length) || len + offset > svlen)
1477 len = svlen - offset;
1478
1479 {
1480 dREQ;
1481
1482 req->type = ix;
1483 req->sv2 = SvREFCNT_inc (data);
1484 req->ptr2 = (char *)svptr + offset;
1485 req->size = len;
1486 req->int1 = flags;
1487
1488 REQ_SEND;
1489 }
1490}
1491
1492void
1493aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1494 PPCODE:
1495{
1496 STRLEN svlen;
1497 char *svptr = SvPVbyte (data, svlen);
1498 UV len = SvUV (length);
1499
1500 if (offset < 0)
1501 offset += svlen;
1502
1503 if (offset < 0 || offset > svlen)
1504 croak ("offset outside of scalar");
1505
1506 if (!SvOK (length) || len + offset > svlen)
1507 len = svlen - offset;
1508
1509 {
1510 dREQ;
1511
1512 req->type = EIO_MLOCK;
1513 req->sv2 = SvREFCNT_inc (data);
1514 req->ptr2 = (char *)svptr + offset;
1515 req->size = len;
1516
1517 REQ_SEND;
1518 }
1519}
1520
1521void
1522aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1523 PPCODE:
1524{
1525 dREQ;
1526
1527 req->type = EIO_MLOCKALL;
1528 req->int1 = flags;
1529
1530 REQ_SEND;
1531}
1532
1533void
1534aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1535 PPCODE:
1536{
1537 int fd = s_fileno_croak (fh, 0);
1538 dREQ;
1539
1540 req->type = EIO_CUSTOM;
1541 req->sv1 = newSVsv (fh);
1542 req->int1 = fd;
1543
1544 req->feed = fiemap;
1545#if HAVE_FIEMAP
1546 /* keep our fingers crossed that the next two types are 64 bit */
1547 req->offs = start;
1548 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1549 req->int2 = flags;
1550 req->int3 = SvOK (count) ? SvIV (count) : -1;
1551#endif
1552
1553 REQ_SEND;
1554}
1555
1556void
1557aio_busy (double delay, SV *callback=&PL_sv_undef)
1558 PPCODE:
1559{
1560 dREQ;
1561
1562 req->type = EIO_BUSY;
1563 req->nv1 = delay < 0. ? 0. : delay;
1564
1565 REQ_SEND;
1566}
1567
1568void
1569aio_group (SV *callback=&PL_sv_undef)
1570 PPCODE:
1571{
1572 dREQ;
1573
1574 req->type = EIO_GROUP;
1575
1576 req_submit (req);
1577 XPUSHs (req_sv (req, aio_grp_stash));
1578}
1579
1580void
1581aio_nop (SV *callback=&PL_sv_undef)
1582 ALIAS:
1583 aio_nop = EIO_NOP
1584 aio_sync = EIO_SYNC
1585 PPCODE:
1586{
1587 dREQ;
1588
1589 req->type = ix;
1590
1591 REQ_SEND;
1592}
1593
1594int
1595aioreq_pri (int pri = 0)
739 CODE: 1596 CODE:
1597 RETVAL = next_pri;
1598 if (items > 0)
1599 {
1600 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1601 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1602 next_pri = pri;
1603 }
1604 OUTPUT:
1605 RETVAL
1606
1607void
1608aioreq_nice (int nice = 0)
1609 CODE:
1610 nice = next_pri - nice;
1611 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1612 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1613 next_pri = nice;
1614
1615void
1616flush ()
1617 CODE:
740 while (nreqs) 1618 while (eio_nreqs ())
741 { 1619 {
742 poll_wait (); 1620 poll_wait ();
743 poll_cb (); 1621 poll_cb ();
744 } 1622 }
745 1623
746void 1624int
747poll() 1625poll ()
748 PROTOTYPE:
749 CODE: 1626 CODE:
750 if (nreqs)
751 {
752 poll_wait (); 1627 poll_wait ();
753 poll_cb (); 1628 RETVAL = poll_cb ();
754 }
755
756int
757poll_fileno()
758 PROTOTYPE:
759 CODE:
760 RETVAL = respipe [0];
761 OUTPUT: 1629 OUTPUT:
762 RETVAL 1630 RETVAL
763 1631
764int 1632int
1633poll_fileno ()
1634 CODE:
1635 RETVAL = s_epipe_fd (&respipe);
1636 OUTPUT:
1637 RETVAL
1638
1639int
765poll_cb(...) 1640poll_cb (...)
766 PROTOTYPE: 1641 PROTOTYPE:
767 CODE: 1642 CODE:
768 RETVAL = poll_cb (); 1643 RETVAL = poll_cb ();
769 OUTPUT: 1644 OUTPUT:
770 RETVAL 1645 RETVAL
771 1646
772void 1647void
773poll_wait() 1648poll_wait ()
774 PROTOTYPE:
775 CODE: 1649 CODE:
776 if (nreqs)
777 poll_wait (); 1650 poll_wait ();
778 1651
779int 1652int
780nreqs() 1653nreqs ()
781 PROTOTYPE:
782 CODE: 1654 CODE:
783 RETVAL = nreqs; 1655 RETVAL = eio_nreqs ();
784 OUTPUT: 1656 OUTPUT:
785 RETVAL 1657 RETVAL
786 1658
1659int
1660nready ()
1661 CODE:
1662 RETVAL = eio_nready ();
1663 OUTPUT:
1664 RETVAL
1665
1666int
1667npending ()
1668 CODE:
1669 RETVAL = eio_npending ();
1670 OUTPUT:
1671 RETVAL
1672
1673int
1674nthreads ()
1675 CODE:
1676 RETVAL = eio_nthreads ();
1677 OUTPUT:
1678 RETVAL
1679
1680int
1681fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1682 CODE:
1683 RETVAL = posix_fadvise (fh, offset, length, advice);
1684 OUTPUT:
1685 RETVAL
1686
1687IV
1688sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1689 CODE:
1690 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1691 OUTPUT:
1692 RETVAL
1693
1694void
1695mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1696 PPCODE:
1697 sv_unmagic (scalar, MMAP_MAGIC);
1698{
1699 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1700 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1701 if (addr == (void *)-1)
1702 XSRETURN_NO;
1703
1704 sv_force_normal (scalar);
1705
1706 /* we store the length in mg_obj, as namlen is I32 :/ */
1707 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1708 ->mg_obj = (SV *)length;
1709
1710 SvUPGRADE (scalar, SVt_PV); /* nop... */
1711
1712 if (!(prot & PROT_WRITE))
1713 SvREADONLY_on (scalar);
1714
1715 if (SvLEN (scalar))
1716 Safefree (SvPVX (scalar));
1717
1718 SvPVX (scalar) = (char *)addr;
1719 SvCUR_set (scalar, length);
1720 SvLEN_set (scalar, 0);
1721 SvPOK_only (scalar);
1722
1723 XSRETURN_YES;
1724}
1725
1726void
1727munmap (SV *scalar)
1728 CODE:
1729 sv_unmagic (scalar, MMAP_MAGIC);
1730
1731int
1732madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1733 ALIAS:
1734 mprotect = 1
1735 CODE:
1736{
1737 STRLEN svlen;
1738 void *addr = SvPVbyte (scalar, svlen);
1739 size_t len = SvUV (length);
1740
1741 if (offset < 0)
1742 offset += svlen;
1743
1744 if (offset < 0 || offset > svlen)
1745 croak ("offset outside of scalar");
1746
1747 if (!SvOK (length) || len + offset > svlen)
1748 len = svlen - offset;
1749
1750 addr = (void *)(((intptr_t)addr) + offset);
1751 eio_page_align (&addr, &len);
1752
1753 switch (ix)
1754 {
1755 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1756 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1757 }
1758}
1759 OUTPUT:
1760 RETVAL
1761
1762int
1763munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1764 CODE:
1765{
1766 STRLEN svlen;
1767 void *addr = SvPVbyte (scalar, svlen);
1768 size_t len = SvUV (length);
1769
1770 if (offset < 0)
1771 offset += svlen;
1772
1773 if (offset < 0 || offset > svlen)
1774 croak ("offset outside of scalar");
1775
1776 if (!SvOK (length) || len + offset > svlen)
1777 len = svlen - offset;
1778
1779 addr = (void *)(((intptr_t)addr) + offset);
1780 eio_page_align (&addr, &len);
1781#if _POSIX_MEMLOCK_RANGE
1782 RETVAL = munlock (addr, len);
1783#else
1784 RETVAL = EIO_ENOSYS ();
1785#endif
1786}
1787 OUTPUT:
1788 RETVAL
1789
1790int
1791munlockall ()
1792 CODE:
1793#if _POSIX_MEMLOCK
1794 munlockall ();
1795#else
1796 RETVAL = EIO_ENOSYS ();
1797#endif
1798 OUTPUT:
1799 RETVAL
1800
1801int
1802splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1803 CODE:
1804{
1805#if HAVE_LINUX_SPLICE
1806 loff_t off_in_, off_out_;
1807 RETVAL = splice (
1808 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1809 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1810 length, flags
1811 );
1812#else
1813 RETVAL = EIO_ENOSYS ();
1814#endif
1815}
1816 OUTPUT:
1817 RETVAL
1818
1819int
1820tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1821 CODE:
1822#if HAVE_LINUX_SPLICE
1823 RETVAL = tee (rfh, wfh, length, flags);
1824#else
1825 RETVAL = EIO_ENOSYS ();
1826#endif
1827 OUTPUT:
1828 RETVAL
1829
1830void _on_next_submit (SV *cb)
1831 CODE:
1832 SvREFCNT_dec (on_next_submit);
1833 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1834
1835PROTOTYPES: DISABLE
1836
1837MODULE = IO::AIO PACKAGE = IO::AIO::WD
1838
1839BOOT:
1840{
1841 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1842 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1843}
1844
1845void
1846DESTROY (SV *self)
1847 CODE:
1848{
1849 aio_wd wd = SvAIO_WD (self);
1850#if HAVE_AT
1851 {
1852 SV *callback = &PL_sv_undef;
1853 dREQ; /* clobbers next_pri :/ */
1854 next_pri = req->pri; /* restore next_pri */
1855 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1856 req->type = EIO_WD_CLOSE;
1857 req->wd = wd;
1858 REQ_SEND;
1859 }
1860#else
1861 eio_wd_close_sync (wd);
1862#endif
1863}
1864
1865MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1866
1867void
1868cancel (aio_req_ornot req)
1869 CODE:
1870 eio_cancel (req);
1871
1872void
1873cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1874 PPCODE:
1875{
1876 if (GIMME_V != G_VOID)
1877 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1878
1879 if (items > 1)
1880 {
1881 SV *cb_cv =get_cb (callback);
1882
1883 SvREFCNT_dec (req->callback);
1884 req->callback = SvREFCNT_inc (cb_cv);
1885 }
1886}
1887
1888MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1889
1890void
1891add (aio_req grp, ...)
1892 PPCODE:
1893{
1894 int i;
1895
1896 if (grp->int1 == 2)
1897 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1898
1899 for (i = 1; i < items; ++i )
1900 {
1901 aio_req req;
1902
1903 if (GIMME_V != G_VOID)
1904 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1905
1906 req = SvAIO_REQ (ST (i));
1907
1908 if (req)
1909 eio_grp_add (grp, req);
1910 }
1911}
1912
1913void
1914cancel_subs (aio_req_ornot req)
1915 CODE:
1916 req_cancel_subs (req);
1917
1918void
1919result (aio_req grp, ...)
1920 CODE:
1921{
1922 int i;
1923 AV *av;
1924
1925 grp->errorno = errno;
1926
1927 av = newAV ();
1928 av_extend (av, items - 1);
1929
1930 for (i = 1; i < items; ++i )
1931 av_push (av, newSVsv (ST (i)));
1932
1933 SvREFCNT_dec (grp->sv1);
1934 grp->sv1 = (SV *)av;
1935}
1936
1937void
1938errno (aio_req grp, int errorno = errno)
1939 CODE:
1940 grp->errorno = errorno;
1941
1942void
1943limit (aio_req grp, int limit)
1944 CODE:
1945 eio_grp_limit (grp, limit);
1946
1947void
1948feed (aio_req grp, SV *callback=&PL_sv_undef)
1949 CODE:
1950{
1951 SvREFCNT_dec (grp->sv2);
1952 grp->sv2 = newSVsv (callback);
1953 grp->feed = aio_grp_feed;
1954
1955 if (grp->int2 <= 0)
1956 grp->int2 = 2;
1957
1958 eio_grp_limit (grp, grp->int2);
1959}
1960

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