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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.18 by root, Sun Jul 31 19:00:31 2005 UTC vs.
Revision 1.219 by root, Fri Jul 27 18:43:25 2012 UTC

1#include "libeio/xthread.h"
2
3#include <errno.h>
4
1#include "EXTERN.h" 5#include "EXTERN.h"
2#include "perl.h" 6#include "perl.h"
3#include "XSUB.h" 7#include "XSUB.h"
4 8
5#include "autoconf/config.h" 9#include "schmorp.h"
6 10
11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h>
7#include <sys/types.h> 14#include <sys/types.h>
8#include <sys/stat.h> 15#include <sys/stat.h>
9
10#include <unistd.h> 16#include <limits.h>
11#include <fcntl.h> 17#include <fcntl.h>
12#include <signal.h>
13#include <sched.h> 18#include <sched.h>
14 19
15#ifndef _REENTRANT 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
16# define _REENTRANT 1 21# include <sys/mman.h>
22#endif
23
24#if __linux__
25# include <linux/fs.h>
26# ifdef FS_IOC_FIEMAP
27# include <linux/types.h>
28# include <linux/fiemap.h>
29# define HAVE_FIEMAP 1
17#endif 30# endif
18#include <errno.h> 31#endif
19 32
20#include <pthread.h> 33/* perl namespace pollution */
34#undef VERSION
21 35
22typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 36/* perl stupidly overrides readdir and maybe others */
23typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 37/* with thread-unsafe versions, imagine that :( */
24typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 38#undef readdir
39#undef opendir
40#undef closedir
25 41
26#if __ia64 42#ifdef _WIN32
27# define STACKSIZE 65536 43
44 // perl overrides all those nice libc functions
45
46 #undef malloc
47 #undef free
48 #undef open
49 #undef read
50 #undef write
51 #undef send
52 #undef recv
53 #undef stat
54 #undef lstat
55 #undef fstat
56 #undef truncate
57 #undef ftruncate
58 #undef open
59 #undef link
60 #undef close
61 #undef unlink
62 #undef mkdir
63 #undef rmdir
64 #undef rename
65 #undef lseek
66 #undef opendir
67 #undef readdir
68 #undef closedir
69 #undef chmod
70 #undef fchmod
71 #undef dup
72 #undef dup2
73 #undef abort
74 #undef pipe
75
76 #define EIO_STRUCT_STAT struct _stati64
77 #define EIO_STRUCT_STATI64
78
28#else 79#else
29# 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 */
30#endif 142# endif
143#endif
144
145/* defines all sorts of constants to 0 unless they are already defined */
146#include "def0.h"
147
148#ifndef makedev
149# define makedev(maj,min) (((maj) << 8) | (min))
150#endif
151#ifndef major
152# define major(dev) ((dev) >> 8)
153#endif
154#ifndef minor
155# define minor(dev) ((dev) & 0xff)
156#endif
157
158#ifndef PAGESIZE
159# define PAGESIZE sysconf (_SC_PAGESIZE)
160#endif
161
162/*****************************************************************************/
163
164static void
165fiemap (eio_req *req)
166{
167 req->result = -1;
168
169#if HAVE_FIEMAP
170 int count = req->int3;
171
172 /* heuristic: first try with 72 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 the 72 below is probably overkill */
175 if (count < 0)
176 count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
177
178 for (;;)
179 {
180 struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
181 errno = ENOMEM;
182 if (!fiemap)
183 return;
184
185 req->ptr1 = fiemap;
186 req->flags |= EIO_FLAG_PTR1_FREE;
187
188 fiemap->fm_start = req->offs;
189 fiemap->fm_length = req->size;
190 fiemap->fm_flags = req->int2;
191 fiemap->fm_extent_count = count;
192
193 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
194 return;
195
196 if (req->int3 >= 0)
197 break; /* when not autosizing we are done */
198
199 if (fiemap->fm_mapped_extents < count)
200 /* either autosizing succeeded,
201 * or the file had no extents
202 * or we luckily had enough space */
203 break;
204
205 /* some kernels overwrite fm_length, so just reset everything */
206 fiemap->fm_start = req->offs;
207 fiemap->fm_length = req->size;
208 fiemap->fm_flags = req->int2;
209 fiemap->fm_extent_count = 0;
210
211 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
212 return;
213
214 /* to work around a kernel bug, we allocate one more */
215 count = fiemap->fm_mapped_extents + 1;
216
217 free (fiemap);
218 }
219
220 req->result = 0;
221
222#else
223 errno = ENOSYS;
224#endif
225}
226
227/*****************************************************************************/
31 228
32enum { 229enum {
33 REQ_QUIT, 230 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
34 REQ_OPEN, REQ_CLOSE,
35 REQ_READ, REQ_WRITE, REQ_READAHEAD,
36 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
37 REQ_FSYNC, REQ_FDATASYNC,
38}; 231};
39 232
40typedef struct aio_cb {
41 struct aio_cb *volatile next;
42
43 int type;
44
45 int fd;
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;
53 STRLEN dataoffset;
54
55 Stat_t *statdata;
56} aio_cb;
57
58typedef aio_cb *aio_req; 233typedef eio_req *aio_req;
234typedef eio_req *aio_req_ornot;
235typedef eio_wd aio_wd;
59 236
60static int started; 237static SV *on_next_submit;
61static volatile int nreqs; 238static int next_pri = EIO_PRI_DEFAULT;
62static int max_outstanding = 1<<30; 239static int max_outstanding;
63static int respipe [2];
64 240
65static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 241static s_epipe respipe;
66static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
67static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68 242
69static volatile aio_req reqs, reqe; /* queue start, queue end */ 243static void req_destroy (aio_req req);
70static volatile aio_req ress, rese; /* queue start, queue end */ 244static void req_cancel (aio_req req);
71 245
72static void 246static void
73poll_wait () 247want_poll (void)
74{ 248{
75 if (nreqs && !ress) 249 /* write a dummy byte to the pipe so fh becomes ready */
250 s_epipe_signal (&respipe);
251}
252
253static void
254done_poll (void)
255{
256 /* read any signals sent by the worker threads */
257 s_epipe_drain (&respipe);
258}
259
260/* must be called at most once */
261static SV *
262req_sv (aio_req req, HV *stash)
263{
264 if (!req->self)
76 { 265 {
77 fd_set rfd; 266 req->self = (SV *)newHV ();
78 FD_ZERO(&rfd); 267 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
79 FD_SET(respipe [0], &rfd);
80
81 select (respipe [0] + 1, &rfd, 0, 0, 0);
82 } 268 }
269
270 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
271}
272
273static SV *
274newSVaio_wd (aio_wd wd)
275{
276 return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
277}
278
279static aio_req
280SvAIO_REQ (SV *sv)
281{
282 MAGIC *mg;
283
284 if (!SvROK (sv)
285 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
286 || (SvSTASH (SvRV (sv)) != aio_grp_stash
287 && SvSTASH (SvRV (sv)) != aio_req_stash
288 && !sv_derived_from (sv, "IO::AIO::REQ")))
289 croak ("object of class IO::AIO::REQ expected");
290
291 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
292
293 return mg ? (aio_req)mg->mg_ptr : 0;
294}
295
296static aio_wd
297SvAIO_WD (SV *sv)
298{
299 if (!SvROK (sv)
300 || SvTYPE (SvRV (sv)) != SVt_PVMG
301 || SvSTASH (SvRV (sv)) != aio_wd_stash)
302 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
303
304 return (aio_wd)(long)SvIVX (SvRV (sv));
305}
306
307static void
308aio_grp_feed (aio_req grp)
309{
310 if (grp->sv2 && SvOK (grp->sv2))
311 {
312 dSP;
313
314 ENTER;
315 SAVETMPS;
316 PUSHMARK (SP);
317 XPUSHs (req_sv (grp, aio_grp_stash));
318 PUTBACK;
319 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
320 SPAGAIN;
321 FREETMPS;
322 LEAVE;
323 }
324}
325
326static void
327req_submit (eio_req *req)
328{
329 eio_submit (req);
330
331 if (expect_false (on_next_submit))
332 {
333 dSP;
334 SV *cb = sv_2mortal (on_next_submit);
335
336 on_next_submit = 0;
337
338 PUSHMARK (SP);
339 PUTBACK;
340 call_sv (cb, G_DISCARD | G_EVAL);
341 }
83} 342}
84 343
85static int 344static int
86poll_cb () 345req_invoke (eio_req *req)
87{ 346{
88 dSP; 347 if (req->flags & FLAG_SV2_RO_OFF)
89 int count = 0; 348 SvREADONLY_off (req->sv2);
90 aio_req req, prv;
91 349
92 pthread_mutex_lock (&reslock); 350 if (!EIO_CANCELLED (req) && req->callback)
93
94 {
95 /* read any signals sent by the worker threads */
96 char buf [32];
97 while (read (respipe [0], buf, 32) > 0)
98 ;
99 }
100
101 req = ress;
102 ress = rese = 0;
103
104 pthread_mutex_unlock (&reslock);
105
106 while (req)
107 { 351 {
108 nreqs--; 352 dSP;
353 static SV *sv_result_cache; /* caches the result integer SV */
354 SV *sv_result;
109 355
110 if (req->type == REQ_QUIT) 356 ENTER;
111 started--; 357 SAVETMPS;
112 else 358 PUSHMARK (SP);
359 EXTEND (SP, 1);
360
361 /* do not recreate the result IV from scratch each time */
362 if (expect_true (sv_result_cache))
113 { 363 {
114 int errorno = errno; 364 sv_result = sv_result_cache; sv_result_cache = 0;
115 errno = req->errorno; 365 SvIV_set (sv_result, req->result);
116 366 SvIOK_only (sv_result);
117 if (req->type == REQ_READ)
118 SvCUR_set (req->data, req->dataoffset
119 + req->result > 0 ? req->result : 0);
120
121 if (req->data)
122 SvREFCNT_dec (req->data);
123
124 if (req->fh)
125 SvREFCNT_dec (req->fh);
126
127 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
128 {
129 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
130 PL_laststatval = req->result;
131 PL_statcache = *(req->statdata);
132
133 Safefree (req->statdata);
134 }
135
136 ENTER;
137 PUSHMARK (SP);
138 XPUSHs (sv_2mortal (newSViv (req->result)));
139
140 if (req->type == REQ_OPEN)
141 {
142 /* convert fd to fh */
143 SV *fh;
144
145 PUTBACK;
146 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
147 SPAGAIN;
148
149 fh = SvREFCNT_inc (POPs);
150
151 PUSHMARK (SP);
152 XPUSHs (sv_2mortal (fh));
153 }
154
155 if (SvOK (req->callback))
156 {
157 PUTBACK;
158 call_sv (req->callback, G_VOID | G_EVAL);
159 SPAGAIN;
160 }
161
162 LEAVE;
163
164 if (req->callback)
165 SvREFCNT_dec (req->callback);
166
167 errno = errorno;
168 count++;
169 }
170
171 prv = req;
172 req = req->next;
173 Safefree (prv);
174
175 /* TODO: croak on errors? */
176 }
177
178 return count;
179}
180
181static void *aio_proc(void *arg);
182
183static void
184start_thread (void)
185{
186 sigset_t fullsigset, oldsigset;
187 pthread_t tid;
188 pthread_attr_t attr;
189
190 pthread_attr_init (&attr);
191 pthread_attr_setstacksize (&attr, STACKSIZE);
192 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
193
194 sigfillset (&fullsigset);
195 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
196
197 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
198 started++;
199
200 sigprocmask (SIG_SETMASK, &oldsigset, 0);
201}
202
203static void
204send_req (aio_req req)
205{
206 nreqs++;
207
208 pthread_mutex_lock (&reqlock);
209
210 req->next = 0;
211
212 if (reqe)
213 {
214 reqe->next = req;
215 reqe = req;
216 }
217 else
218 reqe = reqs = req;
219
220 pthread_cond_signal (&reqwait);
221 pthread_mutex_unlock (&reqlock);
222
223 while (nreqs > max_outstanding)
224 {
225 poll_wait ();
226 poll_cb ();
227 }
228}
229
230static void
231end_thread (void)
232{
233 aio_req req;
234 New (0, req, 1, aio_cb);
235 req->type = REQ_QUIT;
236
237 send_req (req);
238}
239
240/* work around various missing functions */
241
242#if !HAVE_PREADWRITE
243# define pread aio_pread
244# define pwrite aio_pwrite
245
246/*
247 * make our pread/pwrite safe against themselves, but not against
248 * normal read/write by using a mutex. slows down execution a lot,
249 * but that's your problem, not mine.
250 */
251static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
252
253static ssize_t
254pread (int fd, void *buf, size_t count, off_t offset)
255{
256 ssize_t res;
257 off_t ooffset;
258
259 pthread_mutex_lock (&iolock);
260 ooffset = lseek (fd, 0, SEEK_CUR);
261 lseek (fd, offset, SEEK_SET);
262 res = read (fd, buf, count);
263 lseek (fd, ooffset, SEEK_SET);
264 pthread_mutex_unlock (&iolock);
265
266 return res;
267}
268
269static ssize_t
270pwrite (int fd, void *buf, size_t count, off_t offset)
271{
272 ssize_t res;
273 off_t ooffset;
274
275 pthread_mutex_lock (&iolock);
276 ooffset = lseek (fd, 0, SEEK_CUR);
277 lseek (fd, offset, SEEK_SET);
278 res = write (fd, buf, count);
279 lseek (fd, offset, SEEK_SET);
280 pthread_mutex_unlock (&iolock);
281
282 return res;
283}
284#endif
285
286#if !HAVE_FDATASYNC
287# define fdatasync fsync
288#endif
289
290#if !HAVE_READAHEAD
291# define readahead aio_readahead
292
293static char readahead_buf[4096];
294
295static ssize_t
296readahead (int fd, off_t offset, size_t count)
297{
298 while (count > 0)
299 {
300 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
301
302 pread (fd, readahead_buf, len, offset);
303 offset += len;
304 count -= len;
305 }
306
307 errno = 0;
308}
309#endif
310
311static void *
312aio_proc (void *thr_arg)
313{
314 aio_req req;
315 int type;
316
317 do
318 {
319 pthread_mutex_lock (&reqlock);
320
321 for (;;)
322 {
323 req = reqs;
324
325 if (reqs)
326 {
327 reqs = reqs->next;
328 if (!reqs) reqe = 0;
329 }
330
331 if (req)
332 break;
333
334 pthread_cond_wait (&reqwait, &reqlock);
335 }
336
337 pthread_mutex_unlock (&reqlock);
338
339 errno = 0; /* strictly unnecessary */
340
341 type = req->type;
342
343 switch (type)
344 {
345 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
346 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
347
348 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
349
350 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
351 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
352 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
353
354 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
355 case REQ_CLOSE: req->result = close (req->fd); break;
356 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
357
358 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
359 case REQ_FSYNC: req->result = fsync (req->fd); break;
360
361 case REQ_QUIT:
362 break;
363
364 default:
365 req->result = ENOSYS;
366 break;
367 }
368
369 req->errorno = errno;
370
371 pthread_mutex_lock (&reslock);
372
373 req->next = 0;
374
375 if (rese)
376 {
377 rese->next = req;
378 rese = req;
379 } 367 }
380 else 368 else
381 { 369 {
382 rese = ress = req; 370 sv_result = newSViv (req->result);
383 371 SvREADONLY_on (sv_result);
384 /* write a dummy byte to the pipe so fh becomes ready */
385 write (respipe [1], &respipe, 1);
386 } 372 }
387 373
388 pthread_mutex_unlock (&reslock); 374 switch (req->type)
375 {
376 case EIO_WD_OPEN:
377 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
378 break;
379
380 case EIO_READDIR:
381 {
382 SV *rv = &PL_sv_undef;
383
384 if (req->result >= 0)
385 {
386 int i;
387 char *names = (char *)req->ptr2;
388 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
389 AV *av = newAV ();
390
391 av_extend (av, req->result - 1);
392
393 for (i = 0; i < req->result; ++i)
394 {
395 if (req->int1 & EIO_READDIR_DENTS)
396 {
397 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
398
399 if (req->int1 & EIO_READDIR_CUSTOM2)
400 {
401 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
402 AV *avent = newAV ();
403
404 av_extend (avent, 2);
405
406 if (!sv_type [ent->type])
407 {
408 sv_type [ent->type] = newSViv (ent->type);
409 SvREADONLY_on (sv_type [ent->type]);
410 }
411
412 av_store (avent, 0, namesv);
413 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
414 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
415
416 av_store (av, i, newRV_noinc ((SV *)avent));
417 }
418 else
419 av_store (av, i, namesv);
420
421 ++ent;
422 }
423 else
424 {
425 SV *name = newSVpv (names, 0);
426 av_store (av, i, name);
427 names += SvCUR (name) + 1;
428 }
429 }
430
431 rv = sv_2mortal (newRV_noinc ((SV *)av));
432 }
433
434 PUSHs (rv);
435
436 if (req->int1 & EIO_READDIR_CUSTOM1)
437 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
438 }
439 break;
440
441 case EIO_OPEN:
442 {
443 /* convert fd to fh */
444 SV *fh = &PL_sv_undef;
445
446 if (req->result >= 0)
447 {
448 GV *gv = (GV *)sv_newmortal ();
449 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
450 char sym [64];
451 int symlen;
452
453 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
454 gv_init (gv, aio_stash, sym, symlen, 0);
455
456 symlen = snprintf (
457 sym,
458 sizeof (sym),
459 "%s&=%d",
460 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
461 (int)req->result
462 );
463
464 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
465 fh = (SV *)gv;
466 }
467
468 PUSHs (fh);
469 }
470 break;
471
472 case EIO_STATVFS:
473 case EIO_FSTATVFS:
474 {
475 SV *rv = &PL_sv_undef;
476
477#ifndef _WIN32
478 if (req->result >= 0)
479 {
480 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
481 HV *hv = newHV ();
482
483 rv = sv_2mortal (newRV_noinc ((SV *)hv));
484
485 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
486 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
487 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
488 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
489 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
490 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
491 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
492 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
493 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
494 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
495 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
496 }
497#endif
498
499 PUSHs (rv);
500 }
501
502 break;
503
504 case EIO_GROUP:
505 req->int1 = 2; /* mark group as finished */
506
507 if (req->sv1)
508 {
509 int i;
510 AV *av = (AV *)req->sv1;
511
512 EXTEND (SP, AvFILL (av) + 1);
513 for (i = 0; i <= AvFILL (av); ++i)
514 PUSHs (*av_fetch (av, i, 0));
515 }
516 break;
517
518 case EIO_NOP:
519 case EIO_BUSY:
520 break;
521
522 case EIO_READLINK:
523 case EIO_REALPATH:
524 if (req->result > 0)
525 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
526 break;
527
528 case EIO_STAT:
529 case EIO_LSTAT:
530 case EIO_FSTAT:
531 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
532
533 if (!(PL_laststatval = req->result))
534 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
535 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
536
537 PUSHs (sv_result);
538 break;
539
540 case EIO_SEEK:
541 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
542 break;
543
544 case EIO_READ:
545 {
546 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
547 *SvEND (req->sv2) = 0;
548 SvPOK_only (req->sv2);
549 SvSETMAGIC (req->sv2);
550 PUSHs (sv_result);
551 }
552 break;
553
554 case EIO_CUSTOM:
555 if (req->feed == fiemap)
556 {
557#if HAVE_FIEMAP
558 if (!req->result)
559 {
560 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
561
562 if (fiemap->fm_extent_count)
563 {
564 AV *av = newAV ();
565 int i;
566
567 while (fiemap->fm_mapped_extents)
568 {
569 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
570 AV *ext_av = newAV ();
571
572 av_store (ext_av, 3, newSVuv (extent->fe_flags));
573 av_store (ext_av, 2, newSVval64 (extent->fe_length));
574 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
575 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
576
577 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
578 }
579
580 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
581 }
582 else
583 {
584 SvIV_set (sv_result, fiemap->fm_mapped_extents);
585 PUSHs (sv_result);
586 }
587 }
588#endif
589 }
590 else
591 PUSHs (sv_result);
592 break;
593
594 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
595 if (req->result > 0)
596 SvIV_set (sv_result, 0);
597 /* FALLTHROUGH */
598
599 default:
600 PUSHs (sv_result);
601 break;
602 }
603
604 errno = req->errorno;
605
606 PUTBACK;
607 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
608 SPAGAIN;
609
610 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
611 SvREFCNT_dec (sv_result);
612 else
613 sv_result_cache = sv_result;
614
615 FREETMPS;
616 LEAVE;
617
618 PUTBACK;
389 } 619 }
390 while (type != REQ_QUIT); 620
621 return !!SvTRUE (ERRSV);
622}
623
624static void
625req_destroy (aio_req req)
626{
627 if (req->self)
628 {
629 sv_unmagic (req->self, PERL_MAGIC_ext);
630 SvREFCNT_dec (req->self);
631 }
632
633 SvREFCNT_dec (req->sv1);
634 SvREFCNT_dec (req->sv2);
635 SvREFCNT_dec (req->sv3);
636 SvREFCNT_dec (req->sv4);
637 SvREFCNT_dec (req->callback);
638
639 free (req);
640}
641
642static void
643req_cancel_subs (aio_req grp)
644{
645 if (grp->type != EIO_GROUP)
646 return;
647
648 SvREFCNT_dec (grp->sv2);
649 grp->sv2 = 0;
650
651 eio_grp_cancel (grp);
652}
653
654static void ecb_cold
655create_respipe (void)
656{
657 if (s_epipe_renew (&respipe))
658 croak ("IO::AIO: unable to initialize result pipe");
659}
660
661static void
662poll_wait (void)
663{
664 while (eio_nreqs ())
665 {
666 int size;
667
668 X_LOCK (reslock);
669 size = res_queue.size;
670 X_UNLOCK (reslock);
671
672 if (size)
673 return;
674
675 etp_maybe_start_thread ();
676
677 s_epipe_wait (&respipe);
678 }
679}
680
681static int
682poll_cb (void)
683{
684 for (;;)
685 {
686 int res = eio_poll ();
687
688 if (res > 0)
689 croak (0);
690
691 if (!max_outstanding || max_outstanding > eio_nreqs ())
692 return res;
693
694 poll_wait ();
695 }
696}
697
698static void ecb_cold
699reinit (void)
700{
701 create_respipe ();
702
703 if (eio_init (want_poll, done_poll) < 0)
704 croak ("IO::AIO: unable to initialise eio library");
705}
706
707/*****************************************************************************/
708
709#if !_POSIX_MAPPED_FILES
710# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
711# define munmap(addr,length) EIO_ENOSYS ()
712#endif
713
714#if !_POSIX_MEMORY_PROTECTION
715# define mprotect(addr,len,prot) EIO_ENOSYS ()
716# define PROT_NONE 0
717# define PROT_WRITE 0
718# define MAP_PRIVATE 0
719# define MAP_SHARED 0
720# define MAP_FIXED 0
721#endif
722
723#define MMAP_MAGIC PERL_MAGIC_ext
724
725static int ecb_cold
726mmap_free (pTHX_ SV *sv, MAGIC *mg)
727{
728 int old_errno = errno;
729 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
730 errno = old_errno;
731
732 mg->mg_obj = 0; /* just in case */
733
734 SvREADONLY_off (sv);
735
736 if (SvPVX (sv) != mg->mg_ptr)
737 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
738
739 SvCUR_set (sv, 0);
740 SvPVX (sv) = 0;
741 SvOK_off (sv);
391 742
392 return 0; 743 return 0;
393} 744}
394 745
746static MGVTBL mmap_vtbl = {
747 0, 0, 0, 0, mmap_free
748};
749
750/*****************************************************************************/
751
752static SV *
753get_cb (SV *cb_sv)
754{
755 SvGETMAGIC (cb_sv);
756 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
757}
758
759static aio_req ecb_noinline
760dreq (SV *callback)
761{
762 SV *cb_cv;
763 aio_req req;
764 int req_pri = next_pri;
765 next_pri = EIO_PRI_DEFAULT;
766
767 cb_cv = get_cb (callback);
768
769 req = calloc (sizeof (*req), 1);
770 if (!req)
771 croak ("out of memory during eio_req allocation");
772
773 req->callback = SvREFCNT_inc (cb_cv);
774 req->pri = req_pri;
775
776 return req;
777}
778
779#define dREQ \
780 aio_req req = dreq (callback); \
781
782#define REQ_SEND \
783 PUTBACK; \
784 req_submit (req); \
785 SPAGAIN; \
786 \
787 if (GIMME_V != G_VOID) \
788 XPUSHs (req_sv (req, aio_req_stash));
789
790ecb_inline void
791req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
792{
793 if (expect_false (SvROK (path)))
794 {
795 SV *rv = SvRV (path);
796 SV *wdob;
797
798 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
799 {
800 path = AvARRAY (rv)[1];
801 wdob = AvARRAY (rv)[0];
802
803 if (SvOK (wdob))
804 {
805 *wd = SvAIO_WD (wdob);
806 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
807 }
808 else
809 *wd = EIO_INVALID_WD;
810 }
811 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
812 {
813 *wd = (aio_wd)(long)SvIVX (rv);
814 *wdsv = SvREFCNT_inc_NN (rv);
815 *ptr = ".";
816 return; /* path set to "." */
817 }
818 else
819 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
820 }
821
822 *pathsv = newSVsv (path);
823 *ptr = SvPVbyte_nolen (*pathsv);
824}
825
826static void ecb_noinline
827req_set_path1 (aio_req req, SV *path)
828{
829 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
830}
831
832static void ecb_noinline
833req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
834{
835 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
836
837 switch (SvTYPE (rv))
838 {
839 case SVt_PVIO:
840 case SVt_PVLV:
841 case SVt_PVGV:
842 req->type = type_fh;
843 req->sv1 = newSVsv (fh_or_path);
844 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
845 break;
846
847 default:
848 req->type = type_path;
849 req_set_path1 (req, fh_or_path);
850 break;
851 }
852}
853
854XS(boot_IO__AIO) ecb_cold;
855
395MODULE = IO::AIO PACKAGE = IO::AIO 856MODULE = IO::AIO PACKAGE = IO::AIO
396 857
397PROTOTYPES: ENABLE 858PROTOTYPES: ENABLE
398 859
399BOOT: 860BOOT:
400{ 861{
401 if (pipe (respipe)) 862 static const struct {
402 croak ("unable to initialize result pipe"); 863 const char *name;
864 IV iv;
865 } *civ, const_iv[] = {
866# define const_niv(name, value) { # name, (IV) value },
867# define const_iv(name) { # name, (IV) name },
868# define const_eio(name) { # name, (IV) EIO_ ## name },
403 869
404 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 870 /* you have to re-run ./gendef0 after adding/Removing any constants here */
405 croak ("cannot set result pipe to nonblocking mode");
406 871
407 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 872 const_iv (ENOSYS)
408 croak ("cannot set result pipe to nonblocking mode"); 873 const_iv (EXDEV)
409} 874 const_iv (EBADR)
410 875
876 const_iv (O_RDONLY)
877 const_iv (O_WRONLY)
878 const_iv (O_RDWR)
879 const_iv (O_CREAT)
880 const_iv (O_TRUNC)
881 const_iv (O_EXCL)
882 const_iv (O_APPEND)
883
884 const_iv (O_ASYNC)
885 const_iv (O_DIRECT)
886 const_iv (O_NOATIME)
887
888 const_iv (O_CLOEXEC)
889 const_iv (O_NOCTTY)
890 const_iv (O_NOFOLLOW)
891 const_iv (O_NONBLOCK)
892 const_iv (O_EXEC)
893 const_iv (O_SEARCH)
894 const_iv (O_DIRECTORY)
895 const_iv (O_DSYNC)
896 const_iv (O_RSYNC)
897 const_iv (O_SYNC)
898 const_iv (O_TTY_INIT)
899
900 const_iv (S_IFIFO)
901 const_iv (S_IFCHR)
902 const_iv (S_IFBLK)
903 const_iv (S_IFLNK)
904 const_iv (S_IFREG)
905 const_iv (S_IFDIR)
906 const_iv (S_IFWHT)
907 const_iv (S_IFSOCK)
908 const_iv (S_IFMT)
909
910 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
911 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
912 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
913 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
914 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
915 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
916
917 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
918 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
919 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
920 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
921 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
922
923 const_iv (ST_RDONLY)
924 const_iv (ST_NOSUID)
925 const_iv (ST_NODEV)
926 const_iv (ST_NOEXEC)
927 const_iv (ST_SYNCHRONOUS)
928 const_iv (ST_MANDLOCK)
929 const_iv (ST_WRITE)
930 const_iv (ST_APPEND)
931 const_iv (ST_IMMUTABLE)
932 const_iv (ST_NOATIME)
933 const_iv (ST_NODIRATIME)
934 const_iv (ST_RELATIME)
935
936 const_iv (PROT_NONE)
937 const_iv (PROT_EXEC)
938 const_iv (PROT_READ)
939 const_iv (PROT_WRITE)
940
941 /*const_iv (MAP_FIXED)*/
942 const_iv (MAP_PRIVATE)
943 const_iv (MAP_SHARED)
944 const_iv (MAP_ANONYMOUS)
945
946 /* linuxish */
947 const_iv (MAP_HUGETLB)
948 const_iv (MAP_LOCKED)
949 const_iv (MAP_NORESERVE)
950 const_iv (MAP_POPULATE)
951 const_iv (MAP_NONBLOCK)
952
953 const_iv (FIEMAP_FLAG_SYNC)
954 const_iv (FIEMAP_FLAG_XATTR)
955 const_iv (FIEMAP_FLAGS_COMPAT)
956 const_iv (FIEMAP_EXTENT_LAST)
957 const_iv (FIEMAP_EXTENT_UNKNOWN)
958 const_iv (FIEMAP_EXTENT_DELALLOC)
959 const_iv (FIEMAP_EXTENT_ENCODED)
960 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
961 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
962 const_iv (FIEMAP_EXTENT_DATA_INLINE)
963 const_iv (FIEMAP_EXTENT_DATA_TAIL)
964 const_iv (FIEMAP_EXTENT_UNWRITTEN)
965 const_iv (FIEMAP_EXTENT_MERGED)
966 const_iv (FIEMAP_EXTENT_SHARED)
967
968 const_iv (SPLICE_F_MOVE)
969 const_iv (SPLICE_F_NONBLOCK)
970 const_iv (SPLICE_F_MORE)
971 const_iv (SPLICE_F_GIFT)
972
973 const_iv (SEEK_DATA)
974 const_iv (SEEK_HOLE)
975
976 /* libeio constants */
977 const_eio (SEEK_SET)
978 const_eio (SEEK_CUR)
979 const_eio (SEEK_END)
980
981 const_eio (MCL_FUTURE)
982 const_eio (MCL_CURRENT)
983
984 const_eio (MS_ASYNC)
985 const_eio (MS_INVALIDATE)
986 const_eio (MS_SYNC)
987
988 const_eio (MT_MODIFY)
989
990 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
991 const_eio (SYNC_FILE_RANGE_WRITE)
992 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
993
994 const_eio (FALLOC_FL_KEEP_SIZE)
995 const_eio (FALLOC_FL_PUNCH_HOLE)
996
997 const_eio (READDIR_DENTS)
998 const_eio (READDIR_DIRS_FIRST)
999 const_eio (READDIR_STAT_ORDER)
1000 const_eio (READDIR_FOUND_UNKNOWN)
1001
1002 const_eio (DT_UNKNOWN)
1003 const_eio (DT_FIFO)
1004 const_eio (DT_CHR)
1005 const_eio (DT_DIR)
1006 const_eio (DT_BLK)
1007 const_eio (DT_REG)
1008 const_eio (DT_LNK)
1009 const_eio (DT_SOCK)
1010 const_eio (DT_WHT)
1011 };
1012
1013 aio_stash = gv_stashpv ("IO::AIO" , 1);
1014 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1015 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1016 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1017
1018 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1019 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1020
1021 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1022
1023 reinit ();
1024}
1025
411void 1026void
412min_parallel(nthreads) 1027reinit ()
413 int nthreads 1028 PROTOTYPE:
1029
1030void
1031max_poll_reqs (unsigned int nreqs)
414 PROTOTYPE: $ 1032 PROTOTYPE: $
415 CODE: 1033 CODE:
416 while (nthreads > started) 1034 eio_set_max_poll_reqs (nreqs);
417 start_thread ();
418 1035
419void 1036void
420max_parallel(nthreads) 1037max_poll_time (double nseconds)
421 int nthreads
422 PROTOTYPE: $ 1038 PROTOTYPE: $
423 CODE: 1039 CODE:
1040 eio_set_max_poll_time (nseconds);
1041
1042void
1043min_parallel (unsigned int nthreads)
1044 PROTOTYPE: $
1045 CODE:
1046 eio_set_min_parallel (nthreads);
1047
1048void
1049max_parallel (unsigned int nthreads)
1050 PROTOTYPE: $
1051 CODE:
1052 eio_set_max_parallel (nthreads);
1053
1054void
1055max_idle (unsigned int nthreads)
1056 PROTOTYPE: $
1057 CODE:
1058 eio_set_max_idle (nthreads);
1059
1060void
1061idle_timeout (unsigned int seconds)
1062 PROTOTYPE: $
1063 CODE:
1064 eio_set_idle_timeout (seconds);
1065
1066void
1067max_outstanding (unsigned int maxreqs)
1068 PROTOTYPE: $
1069 CODE:
1070 max_outstanding = maxreqs;
1071
1072void
1073aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1074 PPCODE:
424{ 1075{
425 int cur = started; 1076 dREQ;
426 while (cur > nthreads) 1077
427 { 1078 req->type = EIO_WD_OPEN;
428 end_thread (); 1079 req_set_path1 (req, pathname);
1080
1081 REQ_SEND;
1082}
1083
1084void
1085aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1086 PPCODE:
1087{
1088 dREQ;
1089
1090 req->type = EIO_OPEN;
1091 req_set_path1 (req, pathname);
1092 req->int1 = flags;
1093 req->int2 = mode;
1094
1095 REQ_SEND;
1096}
1097
1098void
1099aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1100 ALIAS:
1101 aio_fsync = EIO_FSYNC
1102 aio_fdatasync = EIO_FDATASYNC
1103 aio_syncfs = EIO_SYNCFS
1104 PPCODE:
1105{
1106 int fd = s_fileno_croak (fh, 0);
1107 dREQ;
1108
1109 req->type = ix;
1110 req->sv1 = newSVsv (fh);
1111 req->int1 = fd;
1112
1113 REQ_SEND;
1114}
1115
1116void
1117aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1118 PPCODE:
1119{
1120 int fd = s_fileno_croak (fh, 0);
1121 dREQ;
1122
1123 req->type = EIO_SYNC_FILE_RANGE;
1124 req->sv1 = newSVsv (fh);
1125 req->int1 = fd;
1126 req->offs = offset;
1127 req->size = nbytes;
1128 req->int2 = flags;
1129
1130 REQ_SEND;
1131}
1132
1133void
1134aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1135 PPCODE:
1136{
1137 int fd = s_fileno_croak (fh, 0);
1138 dREQ;
1139
1140 req->type = EIO_FALLOCATE;
1141 req->sv1 = newSVsv (fh);
1142 req->int1 = fd;
1143 req->int2 = mode;
1144 req->offs = offset;
1145 req->size = len;
1146
1147 REQ_SEND;
1148}
1149
1150void
1151aio_close (SV *fh, SV *callback=&PL_sv_undef)
1152 PPCODE:
1153{
1154 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1155 int fd = s_fileno_croak (fh, 0);
1156 dREQ;
1157
1158 if (expect_false (close_fd < 0))
1159 {
1160 int pipefd [2];
1161
1162 if (
1163#ifdef _WIN32
1164 _pipe (pipefd, 1, _O_BINARY) < 0
1165#else
1166 pipe (pipefd) < 0
1167 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1168#endif
1169 || close (pipefd [1]) < 0
429 cur--; 1170 )
1171 abort (); /*D*/
1172
1173 close_fd = pipefd [0];
430 } 1174 }
431 1175
432 while (started > nthreads) 1176 req->type = EIO_DUP2;
1177 req->int1 = close_fd;
1178 req->sv2 = newSVsv (fh);
1179 req->int2 = fd;
1180
1181 REQ_SEND;
1182}
1183
1184void
1185aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1186 PPCODE:
1187{
1188 int fd = s_fileno_croak (fh, 0);
1189 dREQ;
1190
1191 req->type = EIO_SEEK;
1192 req->sv1 = newSVsv (fh);
1193 req->int1 = fd;
1194 req->offs = SvVAL64 (offset);
1195 req->int2 = whence;
1196
1197 REQ_SEND;
1198}
1199
1200void
1201aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1202 ALIAS:
1203 aio_read = EIO_READ
1204 aio_write = EIO_WRITE
1205 PPCODE:
1206{
1207 STRLEN svlen;
1208 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1209 char *svptr = SvPVbyte (data, svlen);
1210 UV len = SvUV (length);
1211
1212 if (dataoffset < 0)
1213 dataoffset += svlen;
1214
1215 if (dataoffset < 0 || dataoffset > svlen)
1216 croak ("dataoffset outside of data scalar");
1217
1218 if (ix == EIO_WRITE)
1219 {
1220 /* write: check length and adjust. */
1221 if (!SvOK (length) || len + dataoffset > svlen)
1222 len = svlen - dataoffset;
1223 }
1224 else
1225 {
1226 /* read: check type and grow scalar as necessary */
1227 SvUPGRADE (data, SVt_PV);
1228 if (SvLEN (data) >= SvCUR (data))
1229 svptr = SvGROW (data, len + dataoffset + 1);
1230 else if (SvCUR (data) < len + dataoffset)
1231 croak ("length + dataoffset outside of scalar, and cannot grow");
1232 }
1233
1234 {
1235 dREQ;
1236
1237 req->type = ix;
1238 req->sv1 = newSVsv (fh);
1239 req->int1 = fd;
1240 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1241 req->size = len;
1242 req->sv2 = SvREFCNT_inc (data);
1243 req->ptr2 = (char *)svptr + dataoffset;
1244 req->stroffset = dataoffset;
1245
1246 if (!SvREADONLY (data))
1247 {
1248 SvREADONLY_on (data);
1249 req->flags |= FLAG_SV2_RO_OFF;
1250 }
1251
1252 REQ_SEND;
1253 }
1254}
1255
1256void
1257aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1258 ALIAS:
1259 aio_readlink = EIO_READLINK
1260 aio_realpath = EIO_REALPATH
1261 PPCODE:
1262{
1263 dREQ;
1264
1265 req->type = ix;
1266 req_set_path1 (req, pathname);
1267
1268 REQ_SEND;
1269}
1270
1271void
1272aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1273 PPCODE:
1274{
1275 int ifd = s_fileno_croak (in_fh , 0);
1276 int ofd = s_fileno_croak (out_fh, 1);
1277 dREQ;
1278
1279 req->type = EIO_SENDFILE;
1280 req->sv1 = newSVsv (out_fh);
1281 req->int1 = ofd;
1282 req->sv2 = newSVsv (in_fh);
1283 req->int2 = ifd;
1284 req->offs = in_offset;
1285 req->size = length;
1286
1287 REQ_SEND;
1288}
1289
1290void
1291aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1292 PPCODE:
1293{
1294 int fd = s_fileno_croak (fh, 0);
1295 dREQ;
1296
1297 req->type = EIO_READAHEAD;
1298 req->sv1 = newSVsv (fh);
1299 req->int1 = fd;
1300 req->offs = offset;
1301 req->size = length;
1302
1303 REQ_SEND;
1304}
1305
1306void
1307aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1308 ALIAS:
1309 aio_stat = EIO_STAT
1310 aio_lstat = EIO_LSTAT
1311 aio_statvfs = EIO_STATVFS
1312 PPCODE:
1313{
1314 dREQ;
1315
1316 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1317
1318 REQ_SEND;
1319}
1320
1321UV
1322major (UV dev)
1323 ALIAS:
1324 minor = 1
1325 CODE:
1326 RETVAL = ix ? major (dev) : minor (dev);
1327 OUTPUT:
1328 RETVAL
1329
1330UV
1331makedev (UV maj, UV min)
1332 CODE:
1333 RETVAL = makedev (maj, min);
1334 OUTPUT:
1335 RETVAL
1336
1337void
1338aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1339 PPCODE:
1340{
1341 dREQ;
1342
1343 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1344 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1345 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1346
1347 REQ_SEND;
1348}
1349
1350void
1351aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1352 PPCODE:
1353{
1354 dREQ;
1355
1356 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1357 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1358
1359 REQ_SEND;
1360}
1361
1362void
1363aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1364 PPCODE:
1365{
1366 dREQ;
1367
1368 req->int2 = mode;
1369 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1370
1371 REQ_SEND;
1372}
1373
1374void
1375aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1376 PPCODE:
1377{
1378 dREQ;
1379
1380 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1381 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1382 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1383
1384 REQ_SEND;
1385}
1386
1387void
1388aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1389 PPCODE:
1390{
1391 dREQ;
1392
1393 req->type = EIO_READDIR;
1394 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1395
1396 if (flags & EIO_READDIR_DENTS)
1397 req->int1 |= EIO_READDIR_CUSTOM2;
1398
1399 req_set_path1 (req, pathname);
1400
1401 REQ_SEND;
1402}
1403
1404void
1405aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1406 PPCODE:
1407{
1408 dREQ;
1409
1410 req->type = EIO_MKDIR;
1411 req->int2 = mode;
1412 req_set_path1 (req, pathname);
1413
1414 REQ_SEND;
1415}
1416
1417void
1418aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1419 ALIAS:
1420 aio_unlink = EIO_UNLINK
1421 aio_rmdir = EIO_RMDIR
1422 aio_readdir = EIO_READDIR
1423 PPCODE:
1424{
1425 dREQ;
1426
1427 req->type = ix;
1428 req_set_path1 (req, pathname);
1429
1430 REQ_SEND;
1431}
1432
1433void
1434aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1435 ALIAS:
1436 aio_link = EIO_LINK
1437 aio_symlink = EIO_SYMLINK
1438 aio_rename = EIO_RENAME
1439 PPCODE:
1440{
1441 eio_wd wd2 = 0;
1442 dREQ;
1443
1444 req->type = ix;
1445 req_set_path1 (req, oldpath);
1446 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1447 req->int3 = (long)wd2;
1448
1449 REQ_SEND;
1450}
1451
1452void
1453aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1454 PPCODE:
1455{
1456 dREQ;
1457
1458 req->type = EIO_MKNOD;
1459 req->int2 = (mode_t)mode;
1460 req->offs = dev;
1461 req_set_path1 (req, pathname);
1462
1463 REQ_SEND;
1464}
1465
1466void
1467aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1468 ALIAS:
1469 aio_mtouch = EIO_MTOUCH
1470 aio_msync = EIO_MSYNC
1471 PPCODE:
1472{
1473 STRLEN svlen;
1474 char *svptr = SvPVbyte (data, svlen);
1475 UV len = SvUV (length);
1476
1477 if (offset < 0)
1478 offset += svlen;
1479
1480 if (offset < 0 || offset > svlen)
1481 croak ("offset outside of scalar");
1482
1483 if (!SvOK (length) || len + offset > svlen)
1484 len = svlen - offset;
1485
1486 {
1487 dREQ;
1488
1489 req->type = ix;
1490 req->sv2 = SvREFCNT_inc (data);
1491 req->ptr2 = (char *)svptr + offset;
1492 req->size = len;
1493 req->int1 = flags;
1494
1495 REQ_SEND;
1496 }
1497}
1498
1499void
1500aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1501 PPCODE:
1502{
1503 STRLEN svlen;
1504 char *svptr = SvPVbyte (data, svlen);
1505 UV len = SvUV (length);
1506
1507 if (offset < 0)
1508 offset += svlen;
1509
1510 if (offset < 0 || offset > svlen)
1511 croak ("offset outside of scalar");
1512
1513 if (!SvOK (length) || len + offset > svlen)
1514 len = svlen - offset;
1515
1516 {
1517 dREQ;
1518
1519 req->type = EIO_MLOCK;
1520 req->sv2 = SvREFCNT_inc (data);
1521 req->ptr2 = (char *)svptr + offset;
1522 req->size = len;
1523
1524 REQ_SEND;
1525 }
1526}
1527
1528void
1529aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1530 PPCODE:
1531{
1532 dREQ;
1533
1534 req->type = EIO_MLOCKALL;
1535 req->int1 = flags;
1536
1537 REQ_SEND;
1538}
1539
1540void
1541aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1542 PPCODE:
1543{
1544 int fd = s_fileno_croak (fh, 0);
1545 dREQ;
1546
1547 req->type = EIO_CUSTOM;
1548 req->sv1 = newSVsv (fh);
1549 req->int1 = fd;
1550
1551 req->feed = fiemap;
1552#if HAVE_FIEMAP
1553 /* keep our fingers crossed that the next two types are 64 bit */
1554 req->offs = start;
1555 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1556 req->int2 = flags;
1557 req->int3 = SvOK (count) ? SvIV (count) : -1;
1558#endif
1559
1560 REQ_SEND;
1561}
1562
1563void
1564aio_busy (double delay, SV *callback=&PL_sv_undef)
1565 PPCODE:
1566{
1567 dREQ;
1568
1569 req->type = EIO_BUSY;
1570 req->nv1 = delay < 0. ? 0. : delay;
1571
1572 REQ_SEND;
1573}
1574
1575void
1576aio_group (SV *callback=&PL_sv_undef)
1577 PPCODE:
1578{
1579 dREQ;
1580
1581 req->type = EIO_GROUP;
1582
1583 req_submit (req);
1584 XPUSHs (req_sv (req, aio_grp_stash));
1585}
1586
1587void
1588aio_nop (SV *callback=&PL_sv_undef)
1589 ALIAS:
1590 aio_nop = EIO_NOP
1591 aio_sync = EIO_SYNC
1592 PPCODE:
1593{
1594 dREQ;
1595
1596 req->type = ix;
1597
1598 REQ_SEND;
1599}
1600
1601int
1602aioreq_pri (int pri = 0)
1603 CODE:
1604 RETVAL = next_pri;
1605 if (items > 0)
1606 {
1607 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1608 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1609 next_pri = pri;
1610 }
1611 OUTPUT:
1612 RETVAL
1613
1614void
1615aioreq_nice (int nice = 0)
1616 CODE:
1617 nice = next_pri - nice;
1618 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1619 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1620 next_pri = nice;
1621
1622void
1623flush ()
1624 CODE:
1625 while (eio_nreqs ())
433 { 1626 {
434 poll_wait (); 1627 poll_wait ();
435 poll_cb (); 1628 poll_cb ();
436 } 1629 }
437}
438 1630
439int 1631int
440max_outstanding(nreqs) 1632poll ()
441 int nreqs
442 PROTOTYPE: $
443 CODE:
444 RETVAL = max_outstanding;
445 max_outstanding = nreqs;
446
447void
448aio_open(pathname,flags,mode,callback=&PL_sv_undef)
449 SV * pathname
450 int flags
451 int mode
452 SV * callback
453 PROTOTYPE: $$$;$
454 CODE: 1633 CODE:
455{
456 aio_req req;
457
458 Newz (0, req, 1, aio_cb);
459
460 if (!req)
461 croak ("out of memory during aio_req allocation");
462
463 req->type = REQ_OPEN;
464 req->data = newSVsv (pathname);
465 req->dataptr = SvPV_nolen (req->data);
466 req->fd = flags;
467 req->mode = mode;
468 req->callback = SvREFCNT_inc (callback);
469
470 send_req (req);
471}
472
473void
474aio_close(fh,callback=&PL_sv_undef)
475 SV * fh
476 SV * callback
477 PROTOTYPE: $;$
478 ALIAS:
479 aio_close = REQ_CLOSE
480 aio_fsync = REQ_FSYNC
481 aio_fdatasync = REQ_FDATASYNC
482 CODE:
483{
484 aio_req req;
485
486 Newz (0, req, 1, aio_cb);
487
488 if (!req)
489 croak ("out of memory during aio_req allocation");
490
491 req->type = ix;
492 req->fh = newSVsv (fh);
493 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
494 req->callback = SvREFCNT_inc (callback);
495
496 send_req (req);
497}
498
499void
500aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
501 SV * fh
502 UV offset
503 IV length
504 SV * data
505 IV dataoffset
506 SV * callback
507 ALIAS:
508 aio_read = REQ_READ
509 aio_write = REQ_WRITE
510 PROTOTYPE: $$$$$;$
511 CODE:
512{
513 aio_req req;
514 STRLEN svlen;
515 char *svptr = SvPV (data, svlen);
516
517 SvUPGRADE (data, SVt_PV);
518 SvPOK_on (data);
519
520 if (dataoffset < 0)
521 dataoffset += svlen;
522
523 if (dataoffset < 0 || dataoffset > svlen)
524 croak ("data offset outside of string");
525
526 if (ix == REQ_WRITE)
527 {
528 /* write: check length and adjust. */
529 if (length < 0 || length + dataoffset > svlen)
530 length = svlen - dataoffset;
531 }
532 else
533 {
534 /* read: grow scalar as necessary */
535 svptr = SvGROW (data, length + dataoffset);
536 }
537
538 if (length < 0)
539 croak ("length must not be negative");
540
541 Newz (0, req, 1, aio_cb);
542
543 if (!req)
544 croak ("out of memory during aio_req allocation");
545
546 req->type = ix;
547 req->fh = newSVsv (fh);
548 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
549 : IoOFP (sv_2io (fh)));
550 req->offset = offset;
551 req->length = length;
552 req->data = SvREFCNT_inc (data);
553 req->dataptr = (char *)svptr + dataoffset;
554 req->callback = SvREFCNT_inc (callback);
555
556 send_req (req);
557}
558
559void
560aio_readahead(fh,offset,length,callback=&PL_sv_undef)
561 SV * fh
562 UV offset
563 IV length
564 SV * callback
565 PROTOTYPE: $$$;$
566 CODE:
567{
568 aio_req req;
569
570 if (length < 0)
571 croak ("length must not be negative");
572
573 Newz (0, req, 1, aio_cb);
574
575 if (!req)
576 croak ("out of memory during aio_req allocation");
577
578 req->type = REQ_READAHEAD;
579 req->fh = newSVsv (fh);
580 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
581 req->offset = offset;
582 req->length = length;
583 req->callback = SvREFCNT_inc (callback);
584
585 send_req (req);
586}
587
588void
589aio_stat(fh_or_path,callback=&PL_sv_undef)
590 SV * fh_or_path
591 SV * callback
592 ALIAS:
593 aio_stat = REQ_STAT
594 aio_lstat = REQ_LSTAT
595 CODE:
596{
597 aio_req req;
598
599 Newz (0, req, 1, aio_cb);
600
601 if (!req)
602 croak ("out of memory during aio_req allocation");
603
604 New (0, req->statdata, 1, Stat_t);
605
606 if (!req->statdata)
607 croak ("out of memory during aio_req->statdata allocation");
608
609 if (SvPOK (fh_or_path))
610 {
611 req->type = ix;
612 req->data = newSVsv (fh_or_path);
613 req->dataptr = SvPV_nolen (req->data);
614 }
615 else
616 {
617 req->type = REQ_FSTAT;
618 req->fh = newSVsv (fh_or_path);
619 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
620 }
621
622 req->callback = SvREFCNT_inc (callback);
623
624 send_req (req);
625}
626
627void
628aio_unlink(pathname,callback=&PL_sv_undef)
629 SV * pathname
630 SV * callback
631 CODE:
632{
633 aio_req req;
634
635 Newz (0, req, 1, aio_cb);
636
637 if (!req)
638 croak ("out of memory during aio_req allocation");
639
640 req->type = REQ_UNLINK;
641 req->data = newSVsv (pathname);
642 req->dataptr = SvPV_nolen (req->data);
643 req->callback = SvREFCNT_inc (callback);
644
645 send_req (req);
646}
647
648void
649flush()
650 PROTOTYPE:
651 CODE:
652 while (nreqs)
653 {
654 poll_wait (); 1634 poll_wait ();
655 poll_cb (); 1635 RETVAL = poll_cb ();
656 }
657
658void
659poll()
660 PROTOTYPE:
661 CODE:
662 if (nreqs)
663 {
664 poll_wait ();
665 poll_cb ();
666 }
667
668int
669poll_fileno()
670 PROTOTYPE:
671 CODE:
672 RETVAL = respipe [0];
673 OUTPUT: 1636 OUTPUT:
674 RETVAL 1637 RETVAL
675 1638
676int 1639int
1640poll_fileno ()
1641 CODE:
1642 RETVAL = s_epipe_fd (&respipe);
1643 OUTPUT:
1644 RETVAL
1645
1646int
677poll_cb(...) 1647poll_cb (...)
678 PROTOTYPE: 1648 PROTOTYPE:
679 CODE: 1649 CODE:
680 RETVAL = poll_cb (); 1650 RETVAL = poll_cb ();
681 OUTPUT: 1651 OUTPUT:
682 RETVAL 1652 RETVAL
683 1653
684void 1654void
685poll_wait() 1655poll_wait ()
686 PROTOTYPE:
687 CODE: 1656 CODE:
688 if (nreqs)
689 poll_wait (); 1657 poll_wait ();
690 1658
691int 1659int
692nreqs() 1660nreqs ()
693 PROTOTYPE:
694 CODE: 1661 CODE:
695 RETVAL = nreqs; 1662 RETVAL = eio_nreqs ();
696 OUTPUT: 1663 OUTPUT:
697 RETVAL 1664 RETVAL
698 1665
1666int
1667nready ()
1668 CODE:
1669 RETVAL = eio_nready ();
1670 OUTPUT:
1671 RETVAL
1672
1673int
1674npending ()
1675 CODE:
1676 RETVAL = eio_npending ();
1677 OUTPUT:
1678 RETVAL
1679
1680int
1681nthreads ()
1682 CODE:
1683 RETVAL = eio_nthreads ();
1684 OUTPUT:
1685 RETVAL
1686
1687int
1688fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1689 CODE:
1690 RETVAL = posix_fadvise (fh, offset, length, advice);
1691 OUTPUT:
1692 RETVAL
1693
1694IV
1695sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1696 CODE:
1697 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1698 OUTPUT:
1699 RETVAL
1700
1701void
1702mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1703 PPCODE:
1704 sv_unmagic (scalar, MMAP_MAGIC);
1705{
1706 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1707 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1708 if (addr == (void *)-1)
1709 XSRETURN_NO;
1710
1711 sv_force_normal (scalar);
1712
1713 /* we store the length in mg_obj, as namlen is I32 :/ */
1714 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1715 ->mg_obj = (SV *)length;
1716
1717 SvUPGRADE (scalar, SVt_PV); /* nop... */
1718
1719 if (!(prot & PROT_WRITE))
1720 SvREADONLY_on (scalar);
1721
1722 if (SvLEN (scalar))
1723 Safefree (SvPVX (scalar));
1724
1725 SvPVX (scalar) = (char *)addr;
1726 SvCUR_set (scalar, length);
1727 SvLEN_set (scalar, 0);
1728 SvPOK_only (scalar);
1729
1730 XSRETURN_YES;
1731}
1732
1733void
1734munmap (SV *scalar)
1735 CODE:
1736 sv_unmagic (scalar, MMAP_MAGIC);
1737
1738int
1739madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1740 ALIAS:
1741 mprotect = 1
1742 CODE:
1743{
1744 STRLEN svlen;
1745 void *addr = SvPVbyte (scalar, svlen);
1746 size_t len = SvUV (length);
1747
1748 if (offset < 0)
1749 offset += svlen;
1750
1751 if (offset < 0 || offset > svlen)
1752 croak ("offset outside of scalar");
1753
1754 if (!SvOK (length) || len + offset > svlen)
1755 len = svlen - offset;
1756
1757 addr = (void *)(((intptr_t)addr) + offset);
1758 eio_page_align (&addr, &len);
1759
1760 switch (ix)
1761 {
1762 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1763 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1764 }
1765}
1766 OUTPUT:
1767 RETVAL
1768
1769int
1770munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1771 CODE:
1772{
1773 STRLEN svlen;
1774 void *addr = SvPVbyte (scalar, svlen);
1775 size_t len = SvUV (length);
1776
1777 if (offset < 0)
1778 offset += svlen;
1779
1780 if (offset < 0 || offset > svlen)
1781 croak ("offset outside of scalar");
1782
1783 if (!SvOK (length) || len + offset > svlen)
1784 len = svlen - offset;
1785
1786 addr = (void *)(((intptr_t)addr) + offset);
1787 eio_page_align (&addr, &len);
1788#if _POSIX_MEMLOCK_RANGE
1789 RETVAL = munlock (addr, len);
1790#else
1791 RETVAL = EIO_ENOSYS ();
1792#endif
1793}
1794 OUTPUT:
1795 RETVAL
1796
1797int
1798munlockall ()
1799 CODE:
1800#if _POSIX_MEMLOCK
1801 munlockall ();
1802#else
1803 RETVAL = EIO_ENOSYS ();
1804#endif
1805 OUTPUT:
1806 RETVAL
1807
1808int
1809splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1810 CODE:
1811{
1812#if HAVE_LINUX_SPLICE
1813 loff_t off_in_, off_out_;
1814 RETVAL = splice (
1815 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1816 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1817 length, flags
1818 );
1819#else
1820 RETVAL = EIO_ENOSYS ();
1821#endif
1822}
1823 OUTPUT:
1824 RETVAL
1825
1826int
1827tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1828 CODE:
1829#if HAVE_LINUX_SPLICE
1830 RETVAL = tee (rfh, wfh, length, flags);
1831#else
1832 RETVAL = EIO_ENOSYS ();
1833#endif
1834 OUTPUT:
1835 RETVAL
1836
1837void _on_next_submit (SV *cb)
1838 CODE:
1839 SvREFCNT_dec (on_next_submit);
1840 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1841
1842PROTOTYPES: DISABLE
1843
1844MODULE = IO::AIO PACKAGE = IO::AIO::WD
1845
1846BOOT:
1847{
1848 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1849 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1850}
1851
1852void
1853DESTROY (SV *self)
1854 CODE:
1855{
1856 aio_wd wd = SvAIO_WD (self);
1857#if HAVE_AT
1858 {
1859 SV *callback = &PL_sv_undef;
1860 dREQ; /* clobbers next_pri :/ */
1861 next_pri = req->pri; /* restore next_pri */
1862 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1863 req->type = EIO_WD_CLOSE;
1864 req->wd = wd;
1865 REQ_SEND;
1866 }
1867#else
1868 eio_wd_close_sync (wd);
1869#endif
1870}
1871
1872MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1873
1874void
1875cancel (aio_req_ornot req)
1876 CODE:
1877 eio_cancel (req);
1878
1879void
1880cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1881 PPCODE:
1882{
1883 if (GIMME_V != G_VOID)
1884 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1885
1886 if (items > 1)
1887 {
1888 SV *cb_cv =get_cb (callback);
1889
1890 SvREFCNT_dec (req->callback);
1891 req->callback = SvREFCNT_inc (cb_cv);
1892 }
1893}
1894
1895MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1896
1897void
1898add (aio_req grp, ...)
1899 PPCODE:
1900{
1901 int i;
1902
1903 if (grp->int1 == 2)
1904 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1905
1906 for (i = 1; i < items; ++i )
1907 {
1908 aio_req req;
1909
1910 if (GIMME_V != G_VOID)
1911 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1912
1913 req = SvAIO_REQ (ST (i));
1914
1915 if (req)
1916 eio_grp_add (grp, req);
1917 }
1918}
1919
1920void
1921cancel_subs (aio_req_ornot req)
1922 CODE:
1923 req_cancel_subs (req);
1924
1925void
1926result (aio_req grp, ...)
1927 CODE:
1928{
1929 int i;
1930 AV *av;
1931
1932 grp->errorno = errno;
1933
1934 av = newAV ();
1935 av_extend (av, items - 1);
1936
1937 for (i = 1; i < items; ++i )
1938 av_push (av, newSVsv (ST (i)));
1939
1940 SvREFCNT_dec (grp->sv1);
1941 grp->sv1 = (SV *)av;
1942}
1943
1944void
1945errno (aio_req grp, int errorno = errno)
1946 CODE:
1947 grp->errorno = errorno;
1948
1949void
1950limit (aio_req grp, int limit)
1951 CODE:
1952 eio_grp_limit (grp, limit);
1953
1954void
1955feed (aio_req grp, SV *callback=&PL_sv_undef)
1956 CODE:
1957{
1958 SvREFCNT_dec (grp->sv2);
1959 grp->sv2 = newSVsv (callback);
1960 grp->feed = aio_grp_feed;
1961
1962 if (grp->int2 <= 0)
1963 grp->int2 = 2;
1964
1965 eio_grp_limit (grp, grp->int2);
1966}
1967

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