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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.29 by root, Wed Aug 17 06:12:10 2005 UTC vs.
Revision 1.211 by root, Sat Apr 7 00:50:33 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/fiemap.h>
28# define HAVE_FIEMAP 1
29# endif
30#endif
23 31
24#if __ia64 32/* perl namespace pollution */
25# define STACKSIZE 65536 33#undef VERSION
34
35/* perl stupidly overrides readdir and maybe others */
36/* with thread-unsafe versions, imagine that :( */
37#undef readdir
38#undef opendir
39#undef closedir
40
41#ifdef _WIN32
42
43 // perl overrides all those nice libc functions
44
45 #undef malloc
46 #undef free
47 #undef open
48 #undef read
49 #undef write
50 #undef send
51 #undef recv
52 #undef stat
53 #undef lstat
54 #undef fstat
55 #undef truncate
56 #undef ftruncate
57 #undef open
58 #undef link
59 #undef close
60 #undef unlink
61 #undef mkdir
62 #undef rmdir
63 #undef rename
64 #undef lseek
65 #undef opendir
66 #undef readdir
67 #undef closedir
68 #undef chmod
69 #undef fchmod
70 #undef dup
71 #undef dup2
72 #undef abort
73 #undef pipe
74
75 #define EIO_STRUCT_STAT struct _stati64
76 #define EIO_STRUCT_STATI64
77
26#else 78#else
27# define STACKSIZE 4096 79
80 #include <sys/time.h>
81 #include <sys/select.h>
82 #include <unistd.h>
83 #include <utime.h>
84 #include <signal.h>
85
86 #define EIO_STRUCT_STAT Stat_t
87
88#endif
89
90/*****************************************************************************/
91
92#if __GNUC__ >= 3
93# define expect(expr,value) __builtin_expect ((expr),(value))
94#else
95# define expect(expr,value) (expr)
96#endif
97
98#define expect_false(expr) expect ((expr) != 0, 0)
99#define expect_true(expr) expect ((expr) != 0, 1)
100
101/*****************************************************************************/
102
103typedef SV SV8; /* byte-sv, used for argument-checking */
104typedef int aio_rfd; /* read file desriptor */
105typedef int aio_wfd; /* write file descriptor */
106
107static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
108
109#define EIO_REQ_MEMBERS \
110 SV *callback; \
111 SV *sv1, *sv2; \
112 SV *sv3, *sv4; \
113 STRLEN stroffset; \
114 SV *self;
115
116#define EIO_NO_WRAPPERS 1
117
118#include "libeio/config.h"
119#include "libeio/eio.h"
120
121static int req_invoke (eio_req *req);
122#define EIO_FINISH(req) req_invoke (req)
123static void req_destroy (eio_req *grp);
124#define EIO_DESTROY(req) req_destroy (req)
125
126#include "libeio/eio.c"
127
128#if !HAVE_POSIX_FADVISE
129# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
130#endif
131
132#if !HAVE_POSIX_MADVISE
133# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
134#endif
135
136#ifndef MAP_ANONYMOUS
137# ifdef MAP_ANON
138# define MAP_ANONYMOUS MAP_ANON
139# else
140# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
28#endif 141# endif
142#endif
29 143
30enum { 144/* defines all sorts of constants to 0 unless they are already defined */
31 REQ_QUIT, 145#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};
39 146
40typedef struct aio_cb { 147#ifndef makedev
41 struct aio_cb *volatile next; 148# define makedev(maj,min) (((maj) << 8) | (min))
149#endif
150#ifndef major
151# define major(dev) ((dev) >> 8)
152#endif
153#ifndef minor
154# define minor(dev) ((dev) & 0xff)
155#endif
42 156
43 int type; 157#ifndef PAGESIZE
158# define PAGESIZE sysconf (_SC_PAGESIZE)
159#endif
44 160
45 int fd; 161/*****************************************************************************/
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}
88 162
89static void 163static void
90poll_wait () 164fiemap (eio_req *req)
91{ 165{
92 if (nreqs && !ress) 166 req->result = -1;
93 {
94 fd_set rfd;
95 FD_ZERO(&rfd);
96 FD_SET(respipe [0], &rfd);
97 167
98 select (respipe [0] + 1, &rfd, 0, 0, 0); 168#if HAVE_FIEMAP
99 }
100}
101
102static int
103poll_cb ()
104{
105 dSP;
106 int count = 0; 169 int count = req->int3;
107 int do_croak = 0; 170
108 aio_req req; 171 /* heuristic: first try with 64 extents if we don't know how many, */
172 /* as most files have (hopefully) fewer than this many extents */
173 /* in fact, most should have <= 2, so maybe the 72 below is probably overkill */
174 if (count < 0)
175 count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
109 176
110 for (;;) 177 for (;;)
111 { 178 {
112 pthread_mutex_lock (&reslock); 179 struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
113 req = ress; 180 errno = ENOMEM;
114
115 if (req) 181 if (!fiemap)
182 return;
183
184 req->ptr1 = fiemap;
185 req->flags |= EIO_FLAG_PTR1_FREE;
186
187 fiemap->fm_start = req->offs;
188 fiemap->fm_length = req->size;
189 fiemap->fm_flags = req->int2;
190 fiemap->fm_extent_count = count;
191
192 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
193 return;
194
195 if (req->int3 >= 0)
196 break; /* when not autosizing we are done */
197
198 if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
199 break; /* autosizing successful, we are done */
200
201 fiemap->fm_flags = req->int2;
202 fiemap->fm_extent_count = 0;
203
204 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
205 return;
206
207 count = fiemap->fm_mapped_extents;
208
209 free (fiemap);
210 }
211
212 req->result = 0;
213
214#else
215 errno = ENOSYS;
216#endif
217}
218
219/*****************************************************************************/
220
221enum {
222 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
223};
224
225typedef eio_req *aio_req;
226typedef eio_req *aio_req_ornot;
227typedef eio_wd aio_wd;
228
229static SV *on_next_submit;
230static int next_pri = EIO_PRI_DEFAULT;
231static int max_outstanding;
232
233static s_epipe respipe;
234
235static void req_destroy (aio_req req);
236static void req_cancel (aio_req req);
237
238static void
239want_poll (void)
240{
241 /* write a dummy byte to the pipe so fh becomes ready */
242 s_epipe_signal (&respipe);
243}
244
245static void
246done_poll (void)
247{
248 /* read any signals sent by the worker threads */
249 s_epipe_drain (&respipe);
250}
251
252/* must be called at most once */
253static SV *
254req_sv (aio_req req, HV *stash)
255{
256 if (!req->self)
257 {
258 req->self = (SV *)newHV ();
259 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
260 }
261
262 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
263}
264
265static SV *
266newSVaio_wd (aio_wd wd)
267{
268 return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
269}
270
271static aio_req
272SvAIO_REQ (SV *sv)
273{
274 MAGIC *mg;
275
276 if (!SvROK (sv)
277 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
278 || (SvSTASH (SvRV (sv)) != aio_grp_stash
279 && SvSTASH (SvRV (sv)) != aio_req_stash
280 && !sv_derived_from (sv, "IO::AIO::REQ")))
281 croak ("object of class IO::AIO::REQ expected");
282
283 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
284
285 return mg ? (aio_req)mg->mg_ptr : 0;
286}
287
288static aio_wd
289SvAIO_WD (SV *sv)
290{
291 if (!SvROK (sv)
292 || SvTYPE (SvRV (sv)) != SVt_PVMG
293 || SvSTASH (SvRV (sv)) != aio_wd_stash)
294 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
295
296 return (aio_wd)(long)SvIVX (SvRV (sv));
297}
298
299static void
300aio_grp_feed (aio_req grp)
301{
302 if (grp->sv2 && SvOK (grp->sv2))
303 {
304 dSP;
305
306 ENTER;
307 SAVETMPS;
308 PUSHMARK (SP);
309 XPUSHs (req_sv (grp, aio_grp_stash));
310 PUTBACK;
311 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
312 SPAGAIN;
313 FREETMPS;
314 LEAVE;
315 }
316}
317
318static void
319req_submit (eio_req *req)
320{
321 eio_submit (req);
322
323 if (expect_false (on_next_submit))
324 {
325 dSP;
326 SV *cb = sv_2mortal (on_next_submit);
327
328 on_next_submit = 0;
329
330 PUSHMARK (SP);
331 PUTBACK;
332 call_sv (cb, G_DISCARD | G_EVAL);
333 }
334}
335
336static int
337req_invoke (eio_req *req)
338{
339 if (req->flags & FLAG_SV2_RO_OFF)
340 SvREADONLY_off (req->sv2);
341
342 if (!EIO_CANCELLED (req) && req->callback)
343 {
344 dSP;
345 static SV *sv_result_cache; /* caches the result integer SV */
346 SV *sv_result;
347
348 ENTER;
349 SAVETMPS;
350 PUSHMARK (SP);
351 EXTEND (SP, 1);
352
353 /* do not recreate the result IV from scratch each time */
354 if (expect_true (sv_result_cache))
116 { 355 {
117 ress = req->next; 356 sv_result = sv_result_cache; sv_result_cache = 0;
118 357 SvIV_set (sv_result, req->result);
119 if (!ress) 358 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 close (respipe [0]);
338 close (respipe [1]);
339 create_pipe ();
340
341 atfork_parent ();
342
343 min_parallel (restart);
344}
345
346/*****************************************************************************/
347/* work around various missing functions */
348
349#if !HAVE_PREADWRITE
350# define pread aio_pread
351# define pwrite aio_pwrite
352
353/*
354 * make our pread/pwrite safe against themselves, but not against
355 * normal read/write by using a mutex. slows down execution a lot,
356 * but that's your problem, not mine.
357 */
358static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
359
360static ssize_t
361pread (int fd, void *buf, size_t count, off_t offset)
362{
363 ssize_t res;
364 off_t ooffset;
365
366 pthread_mutex_lock (&iolock);
367 ooffset = lseek (fd, 0, SEEK_CUR);
368 lseek (fd, offset, SEEK_SET);
369 res = read (fd, buf, count);
370 lseek (fd, ooffset, SEEK_SET);
371 pthread_mutex_unlock (&iolock);
372
373 return res;
374}
375
376static ssize_t
377pwrite (int fd, void *buf, size_t count, off_t offset)
378{
379 ssize_t res;
380 off_t ooffset;
381
382 pthread_mutex_lock (&iolock);
383 ooffset = lseek (fd, 0, SEEK_CUR);
384 lseek (fd, offset, SEEK_SET);
385 res = write (fd, buf, count);
386 lseek (fd, offset, SEEK_SET);
387 pthread_mutex_unlock (&iolock);
388
389 return res;
390}
391#endif
392
393#if !HAVE_FDATASYNC
394# define fdatasync fsync
395#endif
396
397#if !HAVE_READAHEAD
398# define readahead aio_readahead
399
400static char readahead_buf[4096];
401
402static ssize_t
403readahead (int fd, off_t offset, size_t count)
404{
405 while (count > 0)
406 {
407 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
408
409 pread (fd, readahead_buf, len, offset);
410 offset += len;
411 count -= len;
412 }
413
414 errno = 0;
415}
416#endif
417
418/*****************************************************************************/
419
420static void *
421aio_proc (void *thr_arg)
422{
423 aio_req req;
424 int type;
425
426 do
427 {
428 pthread_mutex_lock (&reqlock);
429
430 for (;;)
431 {
432 req = reqs;
433
434 if (reqs)
435 {
436 reqs = reqs->next;
437 if (!reqs) reqe = 0;
438 }
439
440 if (req)
441 break;
442
443 pthread_cond_wait (&reqwait, &reqlock);
444 }
445
446 pthread_mutex_unlock (&reqlock);
447
448 errno = 0; /* strictly unnecessary */
449
450 type = req->type;
451
452 switch (type)
453 {
454 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
455 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
456
457 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
458
459 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
460 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
461 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
462
463 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
464 case REQ_CLOSE: req->result = close (req->fd); break;
465 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
466 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
467 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
468
469 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
470 case REQ_FSYNC: req->result = fsync (req->fd); break;
471
472 case REQ_QUIT:
473 break;
474
475 default:
476 req->result = ENOSYS;
477 break;
478 }
479
480 req->errorno = errno;
481
482 pthread_mutex_lock (&reslock);
483
484 req->next = 0;
485
486 if (rese)
487 {
488 rese->next = req;
489 rese = req;
490 } 359 }
491 else 360 else
492 { 361 {
493 rese = ress = req; 362 sv_result = newSViv (req->result);
494 363 SvREADONLY_on (sv_result);
495 /* write a dummy byte to the pipe so fh becomes ready */
496 write (respipe [1], &respipe, 1);
497 } 364 }
498 365
499 pthread_mutex_unlock (&reslock); 366 switch (req->type)
367 {
368 case EIO_WD_OPEN:
369 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
370 break;
371
372 case EIO_READDIR:
373 {
374 SV *rv = &PL_sv_undef;
375
376 if (req->result >= 0)
377 {
378 int i;
379 char *names = (char *)req->ptr2;
380 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
381 AV *av = newAV ();
382
383 av_extend (av, req->result - 1);
384
385 for (i = 0; i < req->result; ++i)
386 {
387 if (req->int1 & EIO_READDIR_DENTS)
388 {
389 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
390
391 if (req->int1 & EIO_READDIR_CUSTOM2)
392 {
393 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
394 AV *avent = newAV ();
395
396 av_extend (avent, 2);
397
398 if (!sv_type [ent->type])
399 {
400 sv_type [ent->type] = newSViv (ent->type);
401 SvREADONLY_on (sv_type [ent->type]);
402 }
403
404 av_store (avent, 0, namesv);
405 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
406 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
407
408 av_store (av, i, newRV_noinc ((SV *)avent));
409 }
410 else
411 av_store (av, i, namesv);
412
413 ++ent;
414 }
415 else
416 {
417 SV *name = newSVpv (names, 0);
418 av_store (av, i, name);
419 names += SvCUR (name) + 1;
420 }
421 }
422
423 rv = sv_2mortal (newRV_noinc ((SV *)av));
424 }
425
426 PUSHs (rv);
427
428 if (req->int1 & EIO_READDIR_CUSTOM1)
429 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
430 }
431 break;
432
433 case EIO_OPEN:
434 {
435 /* convert fd to fh */
436 SV *fh = &PL_sv_undef;
437
438 if (req->result >= 0)
439 {
440 GV *gv = (GV *)sv_newmortal ();
441 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
442 char sym [64];
443 int symlen;
444
445 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
446 gv_init (gv, aio_stash, sym, symlen, 0);
447
448 symlen = snprintf (
449 sym,
450 sizeof (sym),
451 "%s&=%d",
452 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
453 (int)req->result
454 );
455
456 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
457 fh = (SV *)gv;
458 }
459
460 PUSHs (fh);
461 }
462 break;
463
464 case EIO_STATVFS:
465 case EIO_FSTATVFS:
466 {
467 SV *rv = &PL_sv_undef;
468
469#ifndef _WIN32
470 if (req->result >= 0)
471 {
472 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
473 HV *hv = newHV ();
474
475 rv = sv_2mortal (newRV_noinc ((SV *)hv));
476
477 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
478 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
479 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
480 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
481 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
482 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
483 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
484 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
485 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
486 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
487 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
488 }
489#endif
490
491 PUSHs (rv);
492 }
493
494 break;
495
496 case EIO_GROUP:
497 req->int1 = 2; /* mark group as finished */
498
499 if (req->sv1)
500 {
501 int i;
502 AV *av = (AV *)req->sv1;
503
504 EXTEND (SP, AvFILL (av) + 1);
505 for (i = 0; i <= AvFILL (av); ++i)
506 PUSHs (*av_fetch (av, i, 0));
507 }
508 break;
509
510 case EIO_NOP:
511 case EIO_BUSY:
512 break;
513
514 case EIO_READLINK:
515 case EIO_REALPATH:
516 if (req->result > 0)
517 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
518 break;
519
520 case EIO_STAT:
521 case EIO_LSTAT:
522 case EIO_FSTAT:
523 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
524
525 if (!(PL_laststatval = req->result))
526 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
527 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
528
529 PUSHs (sv_result);
530 break;
531
532 case EIO_SEEK:
533 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
534 break;
535
536 case EIO_READ:
537 {
538 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
539 *SvEND (req->sv2) = 0;
540 SvPOK_only (req->sv2);
541 SvSETMAGIC (req->sv2);
542 PUSHs (sv_result);
543 }
544 break;
545
546 case EIO_CUSTOM:
547 if (req->feed == fiemap)
548 {
549#if HAVE_FIEMAP
550 if (!req->result)
551 {
552 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
553
554 if (fiemap->fm_extent_count)
555 {
556 AV *av = newAV ();
557 int i;
558
559 while (fiemap->fm_mapped_extents)
560 {
561 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
562 AV *ext_av = newAV ();
563
564 av_store (ext_av, 3, newSVuv (extent->fe_flags));
565 av_store (ext_av, 2, newSVval64 (extent->fe_length));
566 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
567 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
568
569 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
570 }
571
572 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
573 }
574 else
575 {
576 SvIV_set (sv_result, fiemap->fm_mapped_extents);
577 PUSHs (sv_result);
578 }
579 }
580#endif
581 }
582 else
583 PUSHs (sv_result);
584 break;
585
586 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
587 if (req->result > 0)
588 SvIV_set (sv_result, 0);
589 /* FALLTHROUGH */
590
591 default:
592 PUSHs (sv_result);
593 break;
594 }
595
596 errno = req->errorno;
597
598 PUTBACK;
599 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
600 SPAGAIN;
601
602 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
603 SvREFCNT_dec (sv_result);
604 else
605 sv_result_cache = sv_result;
606
607 FREETMPS;
608 LEAVE;
609
610 PUTBACK;
500 } 611 }
501 while (type != REQ_QUIT); 612
613 return !!SvTRUE (ERRSV);
614}
615
616static void
617req_destroy (aio_req req)
618{
619 if (req->self)
620 {
621 sv_unmagic (req->self, PERL_MAGIC_ext);
622 SvREFCNT_dec (req->self);
623 }
624
625 SvREFCNT_dec (req->sv1);
626 SvREFCNT_dec (req->sv2);
627 SvREFCNT_dec (req->sv3);
628 SvREFCNT_dec (req->sv4);
629 SvREFCNT_dec (req->callback);
630
631 free (req);
632}
633
634static void
635req_cancel_subs (aio_req grp)
636{
637 if (grp->type != EIO_GROUP)
638 return;
639
640 SvREFCNT_dec (grp->sv2);
641 grp->sv2 = 0;
642
643 eio_grp_cancel (grp);
644}
645
646static void ecb_cold
647create_respipe (void)
648{
649 if (s_epipe_renew (&respipe))
650 croak ("IO::AIO: unable to initialize result pipe");
651}
652
653static void
654poll_wait (void)
655{
656 while (eio_nreqs ())
657 {
658 int size;
659
660 X_LOCK (reslock);
661 size = res_queue.size;
662 X_UNLOCK (reslock);
663
664 if (size)
665 return;
666
667 etp_maybe_start_thread ();
668
669 s_epipe_wait (&respipe);
670 }
671}
672
673static int
674poll_cb (void)
675{
676 for (;;)
677 {
678 int res = eio_poll ();
679
680 if (res > 0)
681 croak (0);
682
683 if (!max_outstanding || max_outstanding > eio_nreqs ())
684 return res;
685
686 poll_wait ();
687 }
688}
689
690static void ecb_cold
691reinit (void)
692{
693 create_respipe ();
694
695 if (eio_init (want_poll, done_poll) < 0)
696 croak ("IO::AIO: unable to initialise eio library");
697}
698
699/*****************************************************************************/
700
701#if !_POSIX_MAPPED_FILES
702# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
703# define munmap(addr,length) (errno = ENOSYS, -1)
704#endif
705
706#if !_POSIX_MEMORY_PROTECTION
707# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
708# define PROT_NONE 0
709# define PROT_WRITE 0
710# define MAP_PRIVATE 0
711# define MAP_SHARED 0
712# define MAP_FIXED 0
713#endif
714
715#define MMAP_MAGIC PERL_MAGIC_ext
716
717static int ecb_cold
718mmap_free (pTHX_ SV *sv, MAGIC *mg)
719{
720 int old_errno = errno;
721 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
722 errno = old_errno;
723
724 mg->mg_obj = 0; /* just in case */
725
726 SvREADONLY_off (sv);
727
728 if (SvPVX (sv) != mg->mg_ptr)
729 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
730
731 SvCUR_set (sv, 0);
732 SvPVX (sv) = 0;
733 SvOK_off (sv);
502 734
503 return 0; 735 return 0;
504} 736}
505 737
738static MGVTBL mmap_vtbl = {
739 0, 0, 0, 0, mmap_free
740};
741
742/*****************************************************************************/
743
744static SV *
745get_cb (SV *cb_sv)
746{
747 SvGETMAGIC (cb_sv);
748 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
749}
750
751static aio_req ecb_noinline
752dreq (SV *callback)
753{
754 SV *cb_cv;
755 aio_req req;
756 int req_pri = next_pri;
757 next_pri = EIO_PRI_DEFAULT;
758
759 cb_cv = get_cb (callback);
760
761 req = calloc (sizeof (*req), 1);
762 if (!req)
763 croak ("out of memory during eio_req allocation");
764
765 req->callback = SvREFCNT_inc (cb_cv);
766 req->pri = req_pri;
767
768 return req;
769}
770
506#define dREQ \ 771#define dREQ \
507 aio_req req; \ 772 aio_req req = dreq (callback); \
773
774#define REQ_SEND \
775 PUTBACK; \
776 req_submit (req); \
777 SPAGAIN; \
508 \ 778 \
509 if (SvOK (callback) && !SvROK (callback)) \ 779 if (GIMME_V != G_VOID) \
510 croak ("clalback must be undef or of reference type"); \ 780 XPUSHs (req_sv (req, aio_req_stash));
511 \ 781
512 Newz (0, req, 1, aio_cb); \ 782ecb_inline void
513 if (!req) \ 783req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
514 croak ("out of memory during aio_req allocation"); \ 784{
515 \ 785 if (expect_false (SvROK (path)))
516 req->callback = newSVsv (callback); 786 {
517 787 SV *rv = SvRV (path);
788 SV *wdob;
789
790 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
791 {
792 path = AvARRAY (rv)[1];
793 wdob = AvARRAY (rv)[0];
794
795 if (SvOK (wdob))
796 {
797 *wd = SvAIO_WD (wdob);
798 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
799 }
800 else
801 *wd = EIO_INVALID_WD;
802 }
803 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
804 {
805 *wd = (aio_wd)(long)SvIVX (rv);
806 *wdsv = SvREFCNT_inc_NN (rv);
807 *ptr = ".";
808 return; /* path set to "." */
809 }
810 else
811 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
812 }
813
814 *pathsv = newSVsv (path);
815 *ptr = SvPVbyte_nolen (*pathsv);
816}
817
818static void ecb_noinline
819req_set_path1 (aio_req req, SV *path)
820{
821 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
822}
823
824static void ecb_noinline
825req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
826{
827 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
828
829 switch (SvTYPE (rv))
830 {
831 case SVt_PVIO:
832 case SVt_PVLV:
833 case SVt_PVGV:
834 req->type = type_fh;
835 req->sv1 = newSVsv (fh_or_path);
836 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
837 break;
838
839 default:
840 req->type = type_path;
841 req_set_path1 (req, fh_or_path);
842 break;
843 }
844}
845
846XS(boot_IO__AIO) ecb_cold;
847
518MODULE = IO::AIO PACKAGE = IO::AIO 848MODULE = IO::AIO PACKAGE = IO::AIO
519 849
520PROTOTYPES: ENABLE 850PROTOTYPES: ENABLE
521 851
522BOOT: 852BOOT:
523{ 853{
524 create_pipe (); 854 static const struct {
525 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 855 const char *name;
526} 856 IV iv;
857 } *civ, const_iv[] = {
858# define const_niv(name, value) { # name, (IV) value },
859# define const_iv(name) { # name, (IV) name },
860# define const_eio(name) { # name, (IV) EIO_ ## name },
527 861
862 /* you have to re-run ./gendef0 after adding/Removing any constants here */
863
864 const_iv (ENOSYS)
865 const_iv (EXDEV)
866 const_iv (EBADR)
867
868 const_iv (O_RDONLY)
869 const_iv (O_WRONLY)
870 const_iv (O_RDWR)
871 const_iv (O_CREAT)
872 const_iv (O_TRUNC)
873 const_iv (O_EXCL)
874 const_iv (O_APPEND)
875
876 const_iv (O_ASYNC)
877 const_iv (O_DIRECT)
878 const_iv (O_NOATIME)
879
880 const_iv (O_CLOEXEC)
881 const_iv (O_NOCTTY)
882 const_iv (O_NOFOLLOW)
883 const_iv (O_NONBLOCK)
884 const_iv (O_EXEC)
885 const_iv (O_SEARCH)
886 const_iv (O_DIRECTORY)
887 const_iv (O_DSYNC)
888 const_iv (O_RSYNC)
889 const_iv (O_SYNC)
890 const_iv (O_TTY_INIT)
891
892 const_iv (S_IFIFO)
893 const_iv (S_IFCHR)
894 const_iv (S_IFBLK)
895 const_iv (S_IFLNK)
896 const_iv (S_IFREG)
897 const_iv (S_IFDIR)
898 const_iv (S_IFWHT)
899 const_iv (S_IFSOCK)
900 const_iv (S_IFMT)
901
902 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
903 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
904 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
905 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
906 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
907 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
908
909 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
910 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
911 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
912 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
913 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
914
915 const_iv (ST_RDONLY)
916 const_iv (ST_NOSUID)
917 const_iv (ST_NODEV)
918 const_iv (ST_NOEXEC)
919 const_iv (ST_SYNCHRONOUS)
920 const_iv (ST_MANDLOCK)
921 const_iv (ST_WRITE)
922 const_iv (ST_APPEND)
923 const_iv (ST_IMMUTABLE)
924 const_iv (ST_NOATIME)
925 const_iv (ST_NODIRATIME)
926 const_iv (ST_RELATIME)
927
928 const_iv (PROT_NONE)
929 const_iv (PROT_EXEC)
930 const_iv (PROT_READ)
931 const_iv (PROT_WRITE)
932
933 /*const_iv (MAP_FIXED)*/
934 const_iv (MAP_PRIVATE)
935 const_iv (MAP_SHARED)
936 const_iv (MAP_ANONYMOUS)
937
938 /* linuxish */
939 const_iv (MAP_HUGETLB)
940 const_iv (MAP_LOCKED)
941 const_iv (MAP_NORESERVE)
942 const_iv (MAP_POPULATE)
943 const_iv (MAP_NONBLOCK)
944
945 const_iv (FIEMAP_FLAG_SYNC)
946 const_iv (FIEMAP_FLAG_XATTR)
947 const_iv (FIEMAP_FLAGS_COMPAT)
948 const_iv (FIEMAP_EXTENT_LAST)
949 const_iv (FIEMAP_EXTENT_UNKNOWN)
950 const_iv (FIEMAP_EXTENT_DELALLOC)
951 const_iv (FIEMAP_EXTENT_ENCODED)
952 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
953 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
954 const_iv (FIEMAP_EXTENT_DATA_INLINE)
955 const_iv (FIEMAP_EXTENT_DATA_TAIL)
956 const_iv (FIEMAP_EXTENT_UNWRITTEN)
957 const_iv (FIEMAP_EXTENT_MERGED)
958 const_iv (FIEMAP_EXTENT_SHARED)
959
960 const_eio (SEEK_SET)
961 const_eio (SEEK_CUR)
962 const_eio (SEEK_END)
963
964 const_eio (MCL_FUTURE)
965 const_eio (MCL_CURRENT)
966
967 const_eio (MS_ASYNC)
968 const_eio (MS_INVALIDATE)
969 const_eio (MS_SYNC)
970
971 const_eio (MT_MODIFY)
972
973 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
974 const_eio (SYNC_FILE_RANGE_WRITE)
975 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
976
977 const_eio (FALLOC_FL_KEEP_SIZE)
978
979 const_eio (READDIR_DENTS)
980 const_eio (READDIR_DIRS_FIRST)
981 const_eio (READDIR_STAT_ORDER)
982 const_eio (READDIR_FOUND_UNKNOWN)
983
984 const_eio (DT_UNKNOWN)
985 const_eio (DT_FIFO)
986 const_eio (DT_CHR)
987 const_eio (DT_DIR)
988 const_eio (DT_BLK)
989 const_eio (DT_REG)
990 const_eio (DT_LNK)
991 const_eio (DT_SOCK)
992 const_eio (DT_WHT)
993 };
994
995 aio_stash = gv_stashpv ("IO::AIO" , 1);
996 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
997 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
998 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
999
1000 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1001 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1002
1003 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1004
1005 reinit ();
1006}
1007
528void 1008void
529min_parallel(nthreads) 1009reinit ()
530 int nthreads 1010 PROTOTYPE:
1011
1012void
1013max_poll_reqs (unsigned int nreqs)
531 PROTOTYPE: $ 1014 PROTOTYPE: $
1015 CODE:
1016 eio_set_max_poll_reqs (nreqs);
532 1017
533void 1018void
534max_parallel(nthreads) 1019max_poll_time (double nseconds)
535 int nthreads
536 PROTOTYPE: $ 1020 PROTOTYPE: $
537
538int
539max_outstanding(nreqs)
540 int nreqs
541 PROTOTYPE: $
542 CODE: 1021 CODE:
543 RETVAL = max_outstanding; 1022 eio_set_max_poll_time (nseconds);
1023
1024void
1025min_parallel (unsigned int nthreads)
1026 PROTOTYPE: $
1027 CODE:
1028 eio_set_min_parallel (nthreads);
1029
1030void
1031max_parallel (unsigned int nthreads)
1032 PROTOTYPE: $
1033 CODE:
1034 eio_set_max_parallel (nthreads);
1035
1036void
1037max_idle (unsigned int nthreads)
1038 PROTOTYPE: $
1039 CODE:
1040 eio_set_max_idle (nthreads);
1041
1042void
1043idle_timeout (unsigned int seconds)
1044 PROTOTYPE: $
1045 CODE:
1046 eio_set_idle_timeout (seconds);
1047
1048void
1049max_outstanding (unsigned int maxreqs)
1050 PROTOTYPE: $
1051 CODE:
544 max_outstanding = nreqs; 1052 max_outstanding = maxreqs;
545 1053
546void 1054void
547aio_open(pathname,flags,mode,callback=&PL_sv_undef) 1055aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
548 SV * pathname
549 int flags
550 int mode
551 SV * callback
552 PROTOTYPE: $$$;$
553 CODE: 1056 PPCODE:
554{ 1057{
555 dREQ; 1058 dREQ;
556 1059
1060 req->type = EIO_WD_OPEN;
1061 req_set_path1 (req, pathname);
1062
1063 REQ_SEND;
1064}
1065
1066void
1067aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1068 PPCODE:
1069{
1070 dREQ;
1071
557 req->type = REQ_OPEN; 1072 req->type = EIO_OPEN;
558 req->data = newSVsv (pathname); 1073 req_set_path1 (req, pathname);
559 req->dataptr = SvPVbyte_nolen (req->data);
560 req->fd = flags; 1074 req->int1 = flags;
561 req->mode = mode; 1075 req->int2 = mode;
562 1076
563 send_req (req); 1077 REQ_SEND;
564} 1078}
565 1079
566void 1080void
567aio_close(fh,callback=&PL_sv_undef) 1081aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
568 SV * fh
569 SV * callback
570 PROTOTYPE: $;$
571 ALIAS: 1082 ALIAS:
572 aio_close = REQ_CLOSE
573 aio_fsync = REQ_FSYNC 1083 aio_fsync = EIO_FSYNC
574 aio_fdatasync = REQ_FDATASYNC 1084 aio_fdatasync = EIO_FDATASYNC
1085 aio_syncfs = EIO_SYNCFS
575 CODE: 1086 PPCODE:
576{ 1087{
1088 int fd = s_fileno_croak (fh, 0);
577 dREQ; 1089 dREQ;
578 1090
579 req->type = ix; 1091 req->type = ix;
580 req->fh = newSVsv (fh); 1092 req->sv1 = newSVsv (fh);
581 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1093 req->int1 = fd;
582 1094
583 send_req (req); 1095 REQ_SEND;
584} 1096}
585 1097
586void 1098void
1099aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1100 PPCODE:
1101{
1102 int fd = s_fileno_croak (fh, 0);
1103 dREQ;
1104
1105 req->type = EIO_SYNC_FILE_RANGE;
1106 req->sv1 = newSVsv (fh);
1107 req->int1 = fd;
1108 req->offs = offset;
1109 req->size = nbytes;
1110 req->int2 = flags;
1111
1112 REQ_SEND;
1113}
1114
1115void
1116aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1117 PPCODE:
1118{
1119 int fd = s_fileno_croak (fh, 0);
1120 dREQ;
1121
1122 req->type = EIO_FALLOCATE;
1123 req->sv1 = newSVsv (fh);
1124 req->int1 = fd;
1125 req->int2 = mode;
1126 req->offs = offset;
1127 req->size = len;
1128
1129 REQ_SEND;
1130}
1131
1132void
1133aio_close (SV *fh, SV *callback=&PL_sv_undef)
1134 PPCODE:
1135{
1136 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1137 int fd = s_fileno_croak (fh, 0);
1138 dREQ;
1139
1140 if (expect_false (close_fd < 0))
1141 {
1142 int pipefd [2];
1143
1144 if (
1145#ifdef _WIN32
1146 _pipe (pipefd, 1, _O_BINARY) < 0
1147#else
1148 pipe (pipefd) < 0
1149 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1150#endif
1151 || close (pipefd [1]) < 0
1152 )
1153 abort (); /*D*/
1154
1155 close_fd = pipefd [0];
1156 }
1157
1158 req->type = EIO_DUP2;
1159 req->int1 = close_fd;
1160 req->sv2 = newSVsv (fh);
1161 req->int2 = fd;
1162
1163 REQ_SEND;
1164}
1165
1166void
1167aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1168 PPCODE:
1169{
1170 int fd = s_fileno_croak (fh, 0);
1171 dREQ;
1172
1173 req->type = EIO_SEEK;
1174 req->sv1 = newSVsv (fh);
1175 req->int1 = fd;
1176 req->offs = SvVAL64 (offset);
1177 req->int2 = whence;
1178
1179 REQ_SEND;
1180}
1181
1182void
587aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1183aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
588 SV * fh
589 UV offset
590 IV length
591 SV * data
592 IV dataoffset
593 SV * callback
594 ALIAS: 1184 ALIAS:
595 aio_read = REQ_READ 1185 aio_read = EIO_READ
596 aio_write = REQ_WRITE 1186 aio_write = EIO_WRITE
597 PROTOTYPE: $$$$$;$
598 CODE: 1187 PPCODE:
599{ 1188{
600 aio_req req;
601 STRLEN svlen; 1189 STRLEN svlen;
1190 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
602 char *svptr = SvPVbyte (data, svlen); 1191 char *svptr = SvPVbyte (data, svlen);
603 1192 UV len = SvUV (length);
604 SvUPGRADE (data, SVt_PV);
605 SvPOK_on (data);
606 1193
607 if (dataoffset < 0) 1194 if (dataoffset < 0)
608 dataoffset += svlen; 1195 dataoffset += svlen;
609 1196
610 if (dataoffset < 0 || dataoffset > svlen) 1197 if (dataoffset < 0 || dataoffset > svlen)
611 croak ("data offset outside of string"); 1198 croak ("dataoffset outside of data scalar");
612 1199
613 if (ix == REQ_WRITE) 1200 if (ix == EIO_WRITE)
614 { 1201 {
615 /* write: check length and adjust. */ 1202 /* write: check length and adjust. */
616 if (length < 0 || length + dataoffset > svlen) 1203 if (!SvOK (length) || len + dataoffset > svlen)
617 length = svlen - dataoffset; 1204 len = svlen - dataoffset;
618 } 1205 }
619 else 1206 else
620 { 1207 {
621 /* read: grow scalar as necessary */ 1208 /* read: check type and grow scalar as necessary */
1209 SvUPGRADE (data, SVt_PV);
622 svptr = SvGROW (data, length + dataoffset); 1210 svptr = SvGROW (data, len + dataoffset + 1);
623 } 1211 }
624
625 if (length < 0)
626 croak ("length must not be negative");
627 1212
628 { 1213 {
629 dREQ; 1214 dREQ;
630 1215
631 req->type = ix; 1216 req->type = ix;
632 req->fh = newSVsv (fh); 1217 req->sv1 = newSVsv (fh);
633 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1218 req->int1 = fd;
634 : IoOFP (sv_2io (fh))); 1219 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
635 req->offset = offset; 1220 req->size = len;
636 req->length = length;
637 req->data = SvREFCNT_inc (data); 1221 req->sv2 = SvREFCNT_inc (data);
638 req->dataptr = (char *)svptr + dataoffset; 1222 req->ptr2 = (char *)svptr + dataoffset;
1223 req->stroffset = dataoffset;
639 1224
640 if (!SvREADONLY (data)) 1225 if (!SvREADONLY (data))
641 { 1226 {
642 SvREADONLY_on (data); 1227 SvREADONLY_on (data);
643 req->data2ptr = (void *)data; 1228 req->flags |= FLAG_SV2_RO_OFF;
644 } 1229 }
645 1230
646 send_req (req); 1231 REQ_SEND;
647 } 1232 }
648} 1233}
649 1234
650void 1235void
651aio_readahead(fh,offset,length,callback=&PL_sv_undef) 1236aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
652 SV * fh 1237 ALIAS:
653 UV offset 1238 aio_readlink = EIO_READLINK
654 IV length 1239 aio_realpath = EIO_REALPATH
655 SV * callback
656 PROTOTYPE: $$$;$
657 CODE: 1240 PPCODE:
658{ 1241{
1242 dREQ;
1243
1244 req->type = ix;
1245 req_set_path1 (req, pathname);
1246
1247 REQ_SEND;
1248}
1249
1250void
1251aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1252 PPCODE:
1253{
1254 int ifd = s_fileno_croak (in_fh , 0);
1255 int ofd = s_fileno_croak (out_fh, 1);
659 dREQ; 1256 dREQ;
660 1257
1258 req->type = EIO_SENDFILE;
1259 req->sv1 = newSVsv (out_fh);
1260 req->int1 = ofd;
1261 req->sv2 = newSVsv (in_fh);
1262 req->int2 = ifd;
1263 req->offs = in_offset;
1264 req->size = length;
1265
1266 REQ_SEND;
1267}
1268
1269void
1270aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1271 PPCODE:
1272{
1273 int fd = s_fileno_croak (fh, 0);
1274 dREQ;
1275
661 req->type = REQ_READAHEAD; 1276 req->type = EIO_READAHEAD;
662 req->fh = newSVsv (fh); 1277 req->sv1 = newSVsv (fh);
663 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1278 req->int1 = fd;
664 req->offset = offset; 1279 req->offs = offset;
665 req->length = length; 1280 req->size = length;
666 1281
667 send_req (req); 1282 REQ_SEND;
668} 1283}
669 1284
670void 1285void
671aio_stat(fh_or_path,callback=&PL_sv_undef) 1286aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
672 SV * fh_or_path
673 SV * callback
674 ALIAS: 1287 ALIAS:
675 aio_stat = REQ_STAT 1288 aio_stat = EIO_STAT
676 aio_lstat = REQ_LSTAT 1289 aio_lstat = EIO_LSTAT
1290 aio_statvfs = EIO_STATVFS
1291 PPCODE:
1292{
1293 dREQ;
1294
1295 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1296
1297 REQ_SEND;
1298}
1299
1300UV
1301major (UV dev)
1302 ALIAS:
1303 minor = 1
677 CODE: 1304 CODE:
1305 RETVAL = ix ? major (dev) : minor (dev);
1306 OUTPUT:
1307 RETVAL
1308
1309UV
1310makedev (UV maj, UV min)
1311 CODE:
1312 RETVAL = makedev (maj, min);
1313 OUTPUT:
1314 RETVAL
1315
1316void
1317aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1318 PPCODE:
678{ 1319{
679 dREQ; 1320 dREQ;
680 1321
681 New (0, req->statdata, 1, Stat_t); 1322 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
682 if (!req->statdata) 1323 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
683 { 1324 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
684 free_req (req);
685 croak ("out of memory during aio_req->statdata allocation");
686 }
687 1325
688 if (SvPOK (fh_or_path)) 1326 REQ_SEND;
689 {
690 req->type = ix;
691 req->data = newSVsv (fh_or_path);
692 req->dataptr = SvPVbyte_nolen (req->data);
693 }
694 else
695 {
696 req->type = REQ_FSTAT;
697 req->fh = newSVsv (fh_or_path);
698 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
699 }
700
701 send_req (req);
702} 1327}
703 1328
704void 1329void
1330aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1331 PPCODE:
1332{
1333 dREQ;
1334
1335 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1336 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1337
1338 REQ_SEND;
1339}
1340
1341void
1342aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1343 PPCODE:
1344{
1345 dREQ;
1346
1347 req->int2 = mode;
1348 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1349
1350 REQ_SEND;
1351}
1352
1353void
1354aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1355 PPCODE:
1356{
1357 dREQ;
1358
1359 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1360 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1361 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1362
1363 REQ_SEND;
1364}
1365
1366void
1367aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1368 PPCODE:
1369{
1370 dREQ;
1371
1372 req->type = EIO_READDIR;
1373 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1374
1375 if (flags & EIO_READDIR_DENTS)
1376 req->int1 |= EIO_READDIR_CUSTOM2;
1377
1378 req_set_path1 (req, pathname);
1379
1380 REQ_SEND;
1381}
1382
1383void
1384aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1385 PPCODE:
1386{
1387 dREQ;
1388
1389 req->type = EIO_MKDIR;
1390 req->int2 = mode;
1391 req_set_path1 (req, pathname);
1392
1393 REQ_SEND;
1394}
1395
1396void
705aio_unlink(pathname,callback=&PL_sv_undef) 1397aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
706 SV * pathname
707 SV * callback
708 ALIAS: 1398 ALIAS:
709 aio_unlink = REQ_UNLINK 1399 aio_unlink = EIO_UNLINK
710 aio_rmdir = REQ_RMDIR 1400 aio_rmdir = EIO_RMDIR
1401 aio_readdir = EIO_READDIR
711 CODE: 1402 PPCODE:
712{ 1403{
713 dREQ; 1404 dREQ;
714 1405
715 req->type = ix; 1406 req->type = ix;
716 req->data = newSVsv (pathname); 1407 req_set_path1 (req, pathname);
717 req->dataptr = SvPVbyte_nolen (req->data);
718
719 send_req (req);
720}
721 1408
1409 REQ_SEND;
1410}
1411
722void 1412void
723aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1413aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
724 SV * oldpath 1414 ALIAS:
725 SV * newpath 1415 aio_link = EIO_LINK
726 SV * callback 1416 aio_symlink = EIO_SYMLINK
1417 aio_rename = EIO_RENAME
727 CODE: 1418 PPCODE:
728{ 1419{
1420 eio_wd wd2 = 0;
729 dREQ; 1421 dREQ;
730 1422
731 req->type = REQ_SYMLINK; 1423 req->type = ix;
732 req->fh = newSVsv (oldpath); 1424 req_set_path1 (req, oldpath);
733 req->data2ptr = SvPVbyte_nolen (req->fh); 1425 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
734 req->data = newSVsv (newpath); 1426 req->int3 = (long)wd2;
735 req->dataptr = SvPVbyte_nolen (req->data);
736 1427
737 send_req (req); 1428 REQ_SEND;
738} 1429}
739 1430
740void 1431void
741flush() 1432aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
742 PROTOTYPE: 1433 PPCODE:
1434{
1435 dREQ;
1436
1437 req->type = EIO_MKNOD;
1438 req->int2 = (mode_t)mode;
1439 req->offs = dev;
1440 req_set_path1 (req, pathname);
1441
1442 REQ_SEND;
1443}
1444
1445void
1446aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1447 ALIAS:
1448 aio_mtouch = EIO_MTOUCH
1449 aio_msync = EIO_MSYNC
1450 PPCODE:
1451{
1452 STRLEN svlen;
1453 char *svptr = SvPVbyte (data, svlen);
1454 UV len = SvUV (length);
1455
1456 if (offset < 0)
1457 offset += svlen;
1458
1459 if (offset < 0 || offset > svlen)
1460 croak ("offset outside of scalar");
1461
1462 if (!SvOK (length) || len + offset > svlen)
1463 len = svlen - offset;
1464
1465 {
1466 dREQ;
1467
1468 req->type = ix;
1469 req->sv2 = SvREFCNT_inc (data);
1470 req->ptr2 = (char *)svptr + offset;
1471 req->size = len;
1472 req->int1 = flags;
1473
1474 REQ_SEND;
1475 }
1476}
1477
1478void
1479aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1480 PPCODE:
1481{
1482 STRLEN svlen;
1483 char *svptr = SvPVbyte (data, svlen);
1484 UV len = SvUV (length);
1485
1486 if (offset < 0)
1487 offset += svlen;
1488
1489 if (offset < 0 || offset > svlen)
1490 croak ("offset outside of scalar");
1491
1492 if (!SvOK (length) || len + offset > svlen)
1493 len = svlen - offset;
1494
1495 {
1496 dREQ;
1497
1498 req->type = EIO_MLOCK;
1499 req->sv2 = SvREFCNT_inc (data);
1500 req->ptr2 = (char *)svptr + offset;
1501 req->size = len;
1502
1503 REQ_SEND;
1504 }
1505}
1506
1507void
1508aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1509 PPCODE:
1510{
1511 dREQ;
1512
1513 req->type = EIO_MLOCKALL;
1514 req->int1 = flags;
1515
1516 REQ_SEND;
1517}
1518
1519void
1520aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1521 PPCODE:
1522{
1523 int fd = s_fileno_croak (fh, 0);
1524 dREQ;
1525
1526 req->type = EIO_CUSTOM;
1527 req->sv1 = newSVsv (fh);
1528 req->int1 = fd;
1529
1530 req->feed = fiemap;
1531#if HAVE_FIEMAP
1532 /* keep our fingers crossed that the next two types are 64 bit */
1533 req->offs = start;
1534 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1535 req->int2 = flags;
1536 req->int3 = SvOK (count) ? SvIV (count) : -1;
1537#endif
1538
1539 REQ_SEND;
1540}
1541
1542void
1543aio_busy (double delay, SV *callback=&PL_sv_undef)
1544 PPCODE:
1545{
1546 dREQ;
1547
1548 req->type = EIO_BUSY;
1549 req->nv1 = delay < 0. ? 0. : delay;
1550
1551 REQ_SEND;
1552}
1553
1554void
1555aio_group (SV *callback=&PL_sv_undef)
1556 PPCODE:
1557{
1558 dREQ;
1559
1560 req->type = EIO_GROUP;
1561
1562 req_submit (req);
1563 XPUSHs (req_sv (req, aio_grp_stash));
1564}
1565
1566void
1567aio_nop (SV *callback=&PL_sv_undef)
1568 ALIAS:
1569 aio_nop = EIO_NOP
1570 aio_sync = EIO_SYNC
1571 PPCODE:
1572{
1573 dREQ;
1574
1575 req->type = ix;
1576
1577 REQ_SEND;
1578}
1579
1580int
1581aioreq_pri (int pri = 0)
743 CODE: 1582 CODE:
1583 RETVAL = next_pri;
1584 if (items > 0)
1585 {
1586 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1587 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1588 next_pri = pri;
1589 }
1590 OUTPUT:
1591 RETVAL
1592
1593void
1594aioreq_nice (int nice = 0)
1595 CODE:
1596 nice = next_pri - nice;
1597 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1598 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1599 next_pri = nice;
1600
1601void
1602flush ()
1603 CODE:
744 while (nreqs) 1604 while (eio_nreqs ())
745 { 1605 {
746 poll_wait (); 1606 poll_wait ();
747 poll_cb (); 1607 poll_cb ();
748 } 1608 }
749 1609
750void 1610int
751poll() 1611poll ()
752 PROTOTYPE:
753 CODE: 1612 CODE:
754 if (nreqs)
755 {
756 poll_wait (); 1613 poll_wait ();
757 poll_cb (); 1614 RETVAL = poll_cb ();
758 }
759
760int
761poll_fileno()
762 PROTOTYPE:
763 CODE:
764 RETVAL = respipe [0];
765 OUTPUT: 1615 OUTPUT:
766 RETVAL 1616 RETVAL
767 1617
768int 1618int
1619poll_fileno ()
1620 CODE:
1621 RETVAL = s_epipe_fd (&respipe);
1622 OUTPUT:
1623 RETVAL
1624
1625int
769poll_cb(...) 1626poll_cb (...)
770 PROTOTYPE: 1627 PROTOTYPE:
771 CODE: 1628 CODE:
772 RETVAL = poll_cb (); 1629 RETVAL = poll_cb ();
773 OUTPUT: 1630 OUTPUT:
774 RETVAL 1631 RETVAL
775 1632
776void 1633void
777poll_wait() 1634poll_wait ()
778 PROTOTYPE:
779 CODE: 1635 CODE:
780 if (nreqs)
781 poll_wait (); 1636 poll_wait ();
782 1637
783int 1638int
784nreqs() 1639nreqs ()
785 PROTOTYPE:
786 CODE: 1640 CODE:
787 RETVAL = nreqs; 1641 RETVAL = eio_nreqs ();
788 OUTPUT: 1642 OUTPUT:
789 RETVAL 1643 RETVAL
790 1644
1645int
1646nready ()
1647 CODE:
1648 RETVAL = eio_nready ();
1649 OUTPUT:
1650 RETVAL
1651
1652int
1653npending ()
1654 CODE:
1655 RETVAL = eio_npending ();
1656 OUTPUT:
1657 RETVAL
1658
1659int
1660nthreads ()
1661 CODE:
1662 RETVAL = eio_nthreads ();
1663 OUTPUT:
1664 RETVAL
1665
1666int
1667fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1668 CODE:
1669 RETVAL = posix_fadvise (fh, offset, length, advice);
1670 OUTPUT:
1671 RETVAL
1672
1673IV
1674sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1675 CODE:
1676 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1677 OUTPUT:
1678 RETVAL
1679
1680void
1681mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1682 PPCODE:
1683 sv_unmagic (scalar, MMAP_MAGIC);
1684{
1685 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1686 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1687 if (addr == (void *)-1)
1688 XSRETURN_NO;
1689
1690 sv_force_normal (scalar);
1691
1692 /* we store the length in mg_obj, as namlen is I32 :/ */
1693 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1694 ->mg_obj = (SV *)length;
1695
1696 SvUPGRADE (scalar, SVt_PV); /* nop... */
1697
1698 if (!(prot & PROT_WRITE))
1699 SvREADONLY_on (scalar);
1700
1701 if (SvLEN (scalar))
1702 Safefree (SvPVX (scalar));
1703
1704 SvPVX (scalar) = (char *)addr;
1705 SvCUR_set (scalar, length);
1706 SvLEN_set (scalar, 0);
1707 SvPOK_only (scalar);
1708
1709 XSRETURN_YES;
1710}
1711
1712void
1713munmap (SV *scalar)
1714 CODE:
1715 sv_unmagic (scalar, MMAP_MAGIC);
1716
1717int
1718madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1719 ALIAS:
1720 mprotect = 1
1721 CODE:
1722{
1723 STRLEN svlen;
1724 void *addr = SvPVbyte (scalar, svlen);
1725 size_t len = SvUV (length);
1726
1727 if (offset < 0)
1728 offset += svlen;
1729
1730 if (offset < 0 || offset > svlen)
1731 croak ("offset outside of scalar");
1732
1733 if (!SvOK (length) || len + offset > svlen)
1734 len = svlen - offset;
1735
1736 addr = (void *)(((intptr_t)addr) + offset);
1737 eio_page_align (&addr, &len);
1738
1739 switch (ix)
1740 {
1741 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1742 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1743 }
1744}
1745 OUTPUT:
1746 RETVAL
1747
1748int
1749munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1750 CODE:
1751{
1752 STRLEN svlen;
1753 void *addr = SvPVbyte (scalar, svlen);
1754 size_t len = SvUV (length);
1755
1756 if (offset < 0)
1757 offset += svlen;
1758
1759 if (offset < 0 || offset > svlen)
1760 croak ("offset outside of scalar");
1761
1762 if (!SvOK (length) || len + offset > svlen)
1763 len = svlen - offset;
1764
1765 addr = (void *)(((intptr_t)addr) + offset);
1766 eio_page_align (&addr, &len);
1767#if _POSIX_MEMLOCK_RANGE
1768 RETVAL = munlock (addr, len);
1769#else
1770 RETVAL = ((errno = ENOSYS), -1);
1771#endif
1772}
1773 OUTPUT:
1774 RETVAL
1775
1776int
1777munlockall ()
1778 CODE:
1779#if _POSIX_MEMLOCK
1780 munlockall ();
1781#else
1782 RETVAL = -1;
1783 errno = ENOSYS;
1784#endif
1785 OUTPUT:
1786 RETVAL
1787
1788void _on_next_submit (SV *cb)
1789 CODE:
1790 SvREFCNT_dec (on_next_submit);
1791 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1792
1793PROTOTYPES: DISABLE
1794
1795MODULE = IO::AIO PACKAGE = IO::AIO::WD
1796
1797BOOT:
1798{
1799 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1800 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1801}
1802
1803void
1804DESTROY (SV *self)
1805 CODE:
1806{
1807 aio_wd wd = SvAIO_WD (self);
1808#if HAVE_AT
1809 {
1810 SV *callback = &PL_sv_undef;
1811 dREQ; /* clobbers next_pri :/ */
1812 next_pri = req->pri; /* restore next_pri */
1813 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1814 req->type = EIO_WD_CLOSE;
1815 req->wd = wd;
1816 REQ_SEND;
1817 }
1818#else
1819 eio_wd_close_sync (wd);
1820#endif
1821}
1822
1823MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1824
1825void
1826cancel (aio_req_ornot req)
1827 CODE:
1828 eio_cancel (req);
1829
1830void
1831cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1832 PPCODE:
1833{
1834 if (GIMME_V != G_VOID)
1835 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1836
1837 if (items > 1)
1838 {
1839 SV *cb_cv =get_cb (callback);
1840
1841 SvREFCNT_dec (req->callback);
1842 req->callback = SvREFCNT_inc (cb_cv);
1843 }
1844}
1845
1846MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1847
1848void
1849add (aio_req grp, ...)
1850 PPCODE:
1851{
1852 int i;
1853
1854 if (grp->int1 == 2)
1855 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1856
1857 for (i = 1; i < items; ++i )
1858 {
1859 aio_req req;
1860
1861 if (GIMME_V != G_VOID)
1862 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1863
1864 req = SvAIO_REQ (ST (i));
1865
1866 if (req)
1867 eio_grp_add (grp, req);
1868 }
1869}
1870
1871void
1872cancel_subs (aio_req_ornot req)
1873 CODE:
1874 req_cancel_subs (req);
1875
1876void
1877result (aio_req grp, ...)
1878 CODE:
1879{
1880 int i;
1881 AV *av;
1882
1883 grp->errorno = errno;
1884
1885 av = newAV ();
1886 av_extend (av, items - 1);
1887
1888 for (i = 1; i < items; ++i )
1889 av_push (av, newSVsv (ST (i)));
1890
1891 SvREFCNT_dec (grp->sv1);
1892 grp->sv1 = (SV *)av;
1893}
1894
1895void
1896errno (aio_req grp, int errorno = errno)
1897 CODE:
1898 grp->errorno = errorno;
1899
1900void
1901limit (aio_req grp, int limit)
1902 CODE:
1903 eio_grp_limit (grp, limit);
1904
1905void
1906feed (aio_req grp, SV *callback=&PL_sv_undef)
1907 CODE:
1908{
1909 SvREFCNT_dec (grp->sv2);
1910 grp->sv2 = newSVsv (callback);
1911 grp->feed = aio_grp_feed;
1912
1913 if (grp->int2 <= 0)
1914 grp->int2 = 2;
1915
1916 eio_grp_limit (grp, grp->int2);
1917}
1918

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