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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.35 by root, Tue Aug 23 01:16:50 2005 UTC vs.
Revision 1.226 by root, Sun Jan 6 11:48:14 2013 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
10#include <pthread.h> 11#include <stddef.h>
11 12#include <stdlib.h>
13#include <errno.h>
12#include <sys/types.h> 14#include <sys/types.h>
13#include <sys/stat.h> 15#include <sys/stat.h>
14
15#include <unistd.h> 16#include <limits.h>
16#include <fcntl.h> 17#include <fcntl.h>
17#include <signal.h>
18#include <sched.h> 18#include <sched.h>
19 19
20#if HAVE_SENDFILE 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
21# include <sys/mman.h>
22#endif
23
21# if __linux 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
30# endif
31#endif
32
33/* perl namespace pollution */
34#undef VERSION
35
36/* perl stupidly overrides readdir and maybe others */
37/* with thread-unsafe versions, imagine that :( */
38#undef readdir
39#undef opendir
40#undef closedir
41
42#ifdef _WIN32
43
44 // perl overrides all those nice libc functions
45
46 #undef malloc
47 #undef free
48 #undef open
49 #undef read
50 #undef write
51 #undef send
52 #undef recv
53 #undef stat
54 #undef lstat
55 #undef fstat
56 #undef truncate
57 #undef ftruncate
58 #undef open
59 #undef link
60 #undef close
61 #undef unlink
62 #undef mkdir
63 #undef rmdir
64 #undef rename
65 #undef lseek
66 #undef opendir
67 #undef readdir
68 #undef closedir
69 #undef chmod
70 #undef fchmod
71 #undef dup
72 #undef dup2
73 #undef abort
74 #undef pipe
75
76 #define EIO_STRUCT_STAT struct _stati64
77 #define EIO_STRUCT_STATI64
78
79#else
80
81 #include <sys/time.h>
22# include <sys/sendfile.h> 82 #include <sys/select.h>
23# elif __freebsd 83 #include <unistd.h>
24# include <sys/socket.h> 84 #include <utime.h>
25# include <sys/uio.h> 85 #include <signal.h>
26# elif __hpux 86
27# include <sys/socket.h> 87 #define EIO_STRUCT_STAT Stat_t
28# elif __solaris /* not yet */ 88
29# include <sys/sendfile.h> 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
30# else 140# else
31# error sendfile support requested but not available 141# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
32# endif 142# endif
33#endif 143#endif
34 144
35#if __ia64 145/* defines all sorts of constants to 0 unless they are already defined */
36# define STACKSIZE 65536 146#include "def0.h"
37#else
38# define STACKSIZE 4096
39#endif
40 147
41enum { 148#ifndef makedev
42 REQ_QUIT, 149# define makedev(maj,min) (((maj) << 8) | (min))
43 REQ_OPEN, REQ_CLOSE, 150#endif
44 REQ_READ, REQ_WRITE, REQ_READAHEAD, 151#ifndef major
45 REQ_SENDFILE, 152# define major(dev) ((dev) >> 8)
46 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 153#endif
47 REQ_FSYNC, REQ_FDATASYNC, 154#ifndef minor
48 REQ_UNLINK, REQ_RMDIR, 155# define minor(dev) ((dev) & 0xff)
49 REQ_SYMLINK, 156#endif
50};
51 157
52typedef struct aio_cb { 158#if PAGESIZE <= 0
53 struct aio_cb *volatile next; 159# define PAGESIZE sysconf (_SC_PAGESIZE)
160#endif
54 161
55 int type; 162/*****************************************************************************/
56
57 int fd, fd2;
58 off_t offset;
59 size_t length;
60 ssize_t result;
61 mode_t mode; /* open */
62 int errorno;
63 SV *data, *callback;
64 SV *fh, *fh2;
65 void *dataptr, *data2ptr;
66 STRLEN dataoffset;
67
68 Stat_t *statdata;
69} aio_cb;
70
71typedef aio_cb *aio_req;
72
73static int started, wanted;
74static volatile int nreqs;
75static int max_outstanding = 1<<30;
76static int respipe [2];
77
78static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
79static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
80static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
81
82static volatile aio_req reqs, reqe; /* queue start, queue end */
83static volatile aio_req ress, rese; /* queue start, queue end */
84
85static void free_req (aio_req req)
86{
87 if (req->data)
88 SvREFCNT_dec (req->data);
89
90 if (req->fh)
91 SvREFCNT_dec (req->fh);
92
93 if (req->fh2)
94 SvREFCNT_dec (req->fh2);
95
96 if (req->statdata)
97 Safefree (req->statdata);
98
99 if (req->callback)
100 SvREFCNT_dec (req->callback);
101
102 Safefree (req);
103}
104 163
105static void 164static void
106poll_wait () 165fiemap (eio_req *req)
107{ 166{
108 if (nreqs && !ress) 167 req->result = -1;
109 {
110 fd_set rfd;
111 FD_ZERO(&rfd);
112 FD_SET(respipe [0], &rfd);
113 168
114 select (respipe [0] + 1, &rfd, 0, 0, 0); 169#if HAVE_FIEMAP
115 } 170 /* assume some c99 */
116} 171 struct fiemap *fiemap = 0;
172 size_t end_offset;
173 int count = req->int3;
117 174
118static int 175 req->flags |= EIO_FLAG_PTR1_FREE;
119poll_cb () 176
120{ 177 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
121 dSP; 178 /* increase in 3.5kb steps */
179 if (count < 0)
122 int count = 0; 180 count = 8;
123 int do_croak = 0; 181
124 aio_req req; 182 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
183 errno = ENOMEM;
184 if (!fiemap)
185 return;
186
187 req->ptr1 = fiemap;
188
189 fiemap->fm_start = req->offs;
190 fiemap->fm_length = req->size;
191 fiemap->fm_flags = req->int2;
192 fiemap->fm_extent_count = count;
193
194 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
195 return;
196
197 if (req->int3 >= 0 /* not autosizing */
198 || !fiemap->fm_mapped_extents /* no more extents */
199 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
200 goto done;
201
202 /* else we have to loop -
203 * it would be tempting (actually I tried that first) to just query the
204 * number of extents needed, but linux often feels like not returning all
205 * extents, without telling us it left any out. this complicates
206 * this quite a bit.
207 */
208
209 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
125 210
126 for (;;) 211 for (;;)
127 { 212 {
128 pthread_mutex_lock (&reslock); 213 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
129 req = ress; 214 char scratch[3072];
215 struct fiemap *incmap = (struct fiemap *)scratch;
130 216
217 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
218 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
219 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
220 incmap->fm_flags = fiemap->fm_flags;
221 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
222
223 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
224 return;
225
226 if (!incmap->fm_mapped_extents)
227 goto done;
228
229 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
230 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
231 errno = ENOMEM;
131 if (req) 232 if (!fiemap)
233 return;
234
235 req->ptr1 = fiemap;
236
237 for (count = 0; count < incmap->fm_mapped_extents; ++count)
132 { 238 {
133 ress = req->next; 239 struct fiemap_extent *e = incmap->fm_extents + count;
134 240
135 if (!ress) 241 if (e->fe_logical + e->fe_length >= end_offset)
136 { 242 goto done;
137 /* read any signals sent by the worker threads */
138 char buf [32];
139 while (read (respipe [0], buf, 32) == 32)
140 ;
141 243
142 rese = 0; 244 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
143 } 245
246 if (e->fe_flags & FIEMAP_EXTENT_LAST)
247 goto done;
248
144 } 249 }
250 }
145 251
146 pthread_mutex_unlock (&reslock); 252done:
253 req->result = 0;
147 254
148 if (!req) 255#else
149 break; 256 errno = ENOSYS;
257#endif
258}
150 259
151 nreqs--; 260/*****************************************************************************/
152 261
153 if (req->type == REQ_QUIT) 262enum {
154 started--; 263 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
155 else 264};
265
266typedef eio_req *aio_req;
267typedef eio_req *aio_req_ornot;
268typedef eio_wd aio_wd;
269
270static SV *on_next_submit;
271static int next_pri = EIO_PRI_DEFAULT;
272static int max_outstanding;
273
274static s_epipe respipe;
275
276static void req_destroy (aio_req req);
277static void req_cancel (aio_req req);
278
279static void
280want_poll (void)
281{
282 /* write a dummy byte to the pipe so fh becomes ready */
283 s_epipe_signal (&respipe);
284}
285
286static void
287done_poll (void)
288{
289 /* read any signals sent by the worker threads */
290 s_epipe_drain (&respipe);
291}
292
293/* must be called at most once */
294static SV *
295req_sv (aio_req req, HV *stash)
296{
297 if (!req->self)
298 {
299 req->self = (SV *)newHV ();
300 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
301 }
302
303 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
304}
305
306static SV *
307newSVaio_wd (aio_wd wd)
308{
309 return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
310}
311
312static aio_req
313SvAIO_REQ (SV *sv)
314{
315 MAGIC *mg;
316
317 if (!SvROK (sv)
318 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
319 || (SvSTASH (SvRV (sv)) != aio_grp_stash
320 && SvSTASH (SvRV (sv)) != aio_req_stash
321 && !sv_derived_from (sv, "IO::AIO::REQ")))
322 croak ("object of class IO::AIO::REQ expected");
323
324 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
325
326 return mg ? (aio_req)mg->mg_ptr : 0;
327}
328
329static aio_wd
330SvAIO_WD (SV *sv)
331{
332 if (!SvROK (sv)
333 || SvTYPE (SvRV (sv)) != SVt_PVMG
334 || SvSTASH (SvRV (sv)) != aio_wd_stash)
335 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
336
337 return (aio_wd)(long)SvIVX (SvRV (sv));
338}
339
340static void
341aio_grp_feed (aio_req grp)
342{
343 if (grp->sv2 && SvOK (grp->sv2))
344 {
345 dSP;
346
347 ENTER;
348 SAVETMPS;
349 PUSHMARK (SP);
350 XPUSHs (req_sv (grp, aio_grp_stash));
351 PUTBACK;
352 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
353 SPAGAIN;
354 FREETMPS;
355 LEAVE;
356 }
357}
358
359static void
360req_submit (eio_req *req)
361{
362 eio_submit (req);
363
364 if (expect_false (on_next_submit))
365 {
366 dSP;
367 SV *cb = sv_2mortal (on_next_submit);
368
369 on_next_submit = 0;
370
371 PUSHMARK (SP);
372 PUTBACK;
373 call_sv (cb, G_DISCARD | G_EVAL);
374 }
375}
376
377static int
378req_invoke (eio_req *req)
379{
380 if (req->flags & FLAG_SV2_RO_OFF)
381 SvREADONLY_off (req->sv2);
382
383 if (!EIO_CANCELLED (req) && req->callback)
384 {
385 dSP;
386 static SV *sv_result_cache; /* caches the result integer SV */
387 SV *sv_result;
388
389 ENTER;
390 SAVETMPS;
391 PUSHMARK (SP);
392 EXTEND (SP, 1);
393
394 /* do not recreate the result IV from scratch each time */
395 if (expect_true (sv_result_cache))
156 { 396 {
157 int errorno = errno; 397 sv_result = sv_result_cache; sv_result_cache = 0;
158 errno = req->errorno; 398 SvIV_set (sv_result, req->result);
159 399 SvIOK_only (sv_result);
160 if (req->type == REQ_READ)
161 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
162
163 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
164 SvREADONLY_off (req->data);
165
166 if (req->statdata)
167 {
168 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
169 PL_laststatval = req->result;
170 PL_statcache = *(req->statdata);
171 }
172
173 ENTER;
174 PUSHMARK (SP);
175 XPUSHs (sv_2mortal (newSViv (req->result)));
176
177 if (req->type == REQ_OPEN)
178 {
179 /* convert fd to fh */
180 SV *fh;
181
182 PUTBACK;
183 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
184 SPAGAIN;
185
186 fh = SvREFCNT_inc (POPs);
187
188 PUSHMARK (SP);
189 XPUSHs (sv_2mortal (fh));
190 }
191
192 if (SvOK (req->callback))
193 {
194 PUTBACK;
195 call_sv (req->callback, G_VOID | G_EVAL);
196 SPAGAIN;
197
198 if (SvTRUE (ERRSV))
199 {
200 free_req (req);
201 croak (0);
202 }
203 }
204
205 LEAVE;
206
207 errno = errorno;
208 count++;
209 }
210
211 free_req (req);
212 }
213
214 return count;
215}
216
217static void *aio_proc(void *arg);
218
219static void
220start_thread (void)
221{
222 sigset_t fullsigset, oldsigset;
223 pthread_t tid;
224 pthread_attr_t attr;
225
226 pthread_attr_init (&attr);
227 pthread_attr_setstacksize (&attr, STACKSIZE);
228 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
229
230 sigfillset (&fullsigset);
231 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
232
233 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
234 started++;
235
236 sigprocmask (SIG_SETMASK, &oldsigset, 0);
237}
238
239static void
240send_req (aio_req req)
241{
242 while (started < wanted && nreqs >= started)
243 start_thread ();
244
245 nreqs++;
246
247 pthread_mutex_lock (&reqlock);
248
249 req->next = 0;
250
251 if (reqe)
252 {
253 reqe->next = req;
254 reqe = req;
255 }
256 else
257 reqe = reqs = req;
258
259 pthread_cond_signal (&reqwait);
260 pthread_mutex_unlock (&reqlock);
261
262 if (nreqs > max_outstanding)
263 for (;;)
264 {
265 poll_cb ();
266
267 if (nreqs <= max_outstanding)
268 break;
269
270 poll_wait ();
271 }
272}
273
274static void
275end_thread (void)
276{
277 aio_req req;
278 Newz (0, req, 1, aio_cb);
279 req->type = REQ_QUIT;
280
281 send_req (req);
282}
283
284static void min_parallel (int nthreads)
285{
286 if (wanted < nthreads)
287 wanted = nthreads;
288}
289
290static void max_parallel (int nthreads)
291{
292 int cur = started;
293
294 if (wanted > nthreads)
295 wanted = nthreads;
296
297 while (cur > wanted)
298 {
299 end_thread ();
300 cur--;
301 }
302
303 while (started > wanted)
304 {
305 poll_wait ();
306 poll_cb ();
307 }
308}
309
310static void create_pipe ()
311{
312 if (pipe (respipe))
313 croak ("unable to initialize result pipe");
314
315 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
316 croak ("cannot set result pipe to nonblocking mode");
317
318 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
319 croak ("cannot set result pipe to nonblocking mode");
320}
321
322static void atfork_prepare (void)
323{
324 pthread_mutex_lock (&reqlock);
325 pthread_mutex_lock (&reslock);
326}
327
328static void atfork_parent (void)
329{
330 pthread_mutex_unlock (&reslock);
331 pthread_mutex_unlock (&reqlock);
332}
333
334static void atfork_child (void)
335{
336 aio_req prv;
337
338 started = 0;
339
340 while (reqs)
341 {
342 prv = reqs;
343 reqs = prv->next;
344 free_req (prv);
345 }
346
347 reqs = reqe = 0;
348
349 while (ress)
350 {
351 prv = ress;
352 ress = prv->next;
353 free_req (prv);
354 }
355
356 ress = rese = 0;
357
358 close (respipe [0]);
359 close (respipe [1]);
360 create_pipe ();
361
362 atfork_parent ();
363}
364
365/* currently noops */
366#define LOCK_FD(fd) do { } while (0)
367#define UNLOCK_FD(fd) do { } while (0)
368
369/*****************************************************************************/
370/* work around various missing functions */
371
372#if !HAVE_PREADWRITE
373# define pread aio_pread
374# define pwrite aio_pwrite
375
376/*
377 * make our pread/pwrite safe against themselves, but not against
378 * normal read/write by using a mutex. slows down execution a lot,
379 * but that's your problem, not mine.
380 */
381static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
382
383static ssize_t
384pread (int fd, void *buf, size_t count, off_t offset)
385{
386 ssize_t res;
387 off_t ooffset;
388
389 LOCK_FD (fd);
390 pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */
391 ooffset = lseek (fd, 0, SEEK_CUR);
392 lseek (fd, offset, SEEK_SET);
393 res = read (fd, buf, count);
394 lseek (fd, ooffset, SEEK_SET);
395 pthread_mutex_unlock (&iolock);
396 UNLOCK_FD (d);
397
398 return res;
399}
400
401static ssize_t
402pwrite (int fd, void *buf, size_t count, off_t offset)
403{
404 ssize_t res;
405 off_t ooffset;
406
407 LOCK_FD (fd);
408 pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */
409 ooffset = lseek (fd, 0, SEEK_CUR);
410 lseek (fd, offset, SEEK_SET);
411 res = write (fd, buf, count);
412 lseek (fd, offset, SEEK_SET);
413 pthread_mutex_unlock (&iolock);
414 UNLOCK_FD (d);
415
416 return res;
417}
418#endif
419
420#if !HAVE_FDATASYNC
421# define fdatasync fsync
422#endif
423
424#if !HAVE_READAHEAD
425# define readahead aio_readahead
426
427static char readahead_buf[4096];
428
429static ssize_t
430readahead (int fd, off_t offset, size_t count)
431{
432 while (count > 0)
433 {
434 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
435
436 pread (fd, readahead_buf, len, offset);
437 offset += len;
438 count -= len;
439 }
440
441 errno = 0;
442}
443#endif
444
445/* sendfile always needs emulation */
446static ssize_t
447sendfile_ (int ofd, int ifd, off_t offset, size_t count)
448{
449 ssize_t res;
450
451 if (!count)
452 return 0;
453
454 LOCK_FD (ofd);
455
456#if HAVE_SENDFILE
457# if __linux
458 res = sendfile (ofd, ifd, &offset, count);
459
460# elif __freebsd
461 /*
462 * Of course, the freebsd sendfile is a dire hack with no thoughts
463 * wasted on making it similar to other I/O functions.
464 */
465 {
466 off_t sbytes;
467 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
468
469 if (res < 0 && sbytes)
470 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
471 res = sbytes;
472 }
473
474# elif __hpux
475 res = sendfile (ofd, ifd, offset, count, 0, 0);
476
477# elif __solaris
478 {
479 struct sendfilevec vec;
480 size_t sbytes;
481
482 vec.sfv_fd = ifd;
483 vec.sfv_flag = 0;
484 vec.sfv_off = offset;
485 vec.sfv_len = count;
486
487 res = sendfilev (ofd, &vec, 1, &sbytes);
488
489 if (res < 0 && sbytes)
490 res = sbytes;
491 }
492
493# else
494 res = -1;
495 errno = ENOSYS;
496# endif
497#endif
498
499 if (res < 0
500 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
501#if __solaris
502 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
503#endif
504 )
505 )
506 {
507 /* emulate sendfile. this is a major pain in the ass */
508 char *buf = malloc (4096);
509 res = 0;
510
511 for (;;)
512 {
513 ssize_t cnt;
514
515 cnt = pread (ifd, buf, 4096, offset);
516
517 if (cnt <= 0)
518 {
519 if (cnt && !res) res = -1;
520 break;
521 }
522
523 cnt = write (ofd, buf, cnt);
524
525 if (cnt <= 0)
526 {
527 if (cnt && !res) res = -1;
528 break;
529 }
530
531 offset += cnt;
532 res += cnt;
533 }
534
535 {
536 int errorno = errno;
537 free (buf);
538 errno = errorno;
539 }
540 }
541
542 UNLOCK_FD (ofd);
543
544 return res;
545}
546
547/*****************************************************************************/
548
549static void *
550aio_proc (void *thr_arg)
551{
552 aio_req req;
553 int type;
554
555 do
556 {
557 pthread_mutex_lock (&reqlock);
558
559 for (;;)
560 {
561 req = reqs;
562
563 if (reqs)
564 {
565 reqs = reqs->next;
566 if (!reqs) reqe = 0;
567 }
568
569 if (req)
570 break;
571
572 pthread_cond_wait (&reqwait, &reqlock);
573 }
574
575 pthread_mutex_unlock (&reqlock);
576
577 errno = 0; /* strictly unnecessary */
578
579 type = req->type;
580
581 switch (type)
582 {
583 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
584 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
585
586 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
587 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
588
589 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
590 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
591 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
592
593 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
594 case REQ_CLOSE: req->result = close (req->fd); break;
595 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
596 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
597 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
598
599 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
600 case REQ_FSYNC: req->result = fsync (req->fd); break;
601
602 case REQ_QUIT:
603 break;
604
605 default:
606 req->result = ENOSYS;
607 break;
608 }
609
610 req->errorno = errno;
611
612 pthread_mutex_lock (&reslock);
613
614 req->next = 0;
615
616 if (rese)
617 {
618 rese->next = req;
619 rese = req;
620 } 400 }
621 else 401 else
622 { 402 {
623 rese = ress = req; 403 sv_result = newSViv (req->result);
624 404 SvREADONLY_on (sv_result);
625 /* write a dummy byte to the pipe so fh becomes ready */
626 write (respipe [1], &respipe, 1);
627 } 405 }
628 406
629 pthread_mutex_unlock (&reslock); 407 switch (req->type)
408 {
409 case EIO_WD_OPEN:
410 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
411 break;
412
413 case EIO_READDIR:
414 {
415 SV *rv = &PL_sv_undef;
416
417 if (req->result >= 0)
418 {
419 int i;
420 char *names = (char *)req->ptr2;
421 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
422 AV *av = newAV ();
423
424 av_extend (av, req->result - 1);
425
426 for (i = 0; i < req->result; ++i)
427 {
428 if (req->int1 & EIO_READDIR_DENTS)
429 {
430 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
431
432 if (req->int1 & EIO_READDIR_CUSTOM2)
433 {
434 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
435 AV *avent = newAV ();
436
437 av_extend (avent, 2);
438
439 if (!sv_type [ent->type])
440 {
441 sv_type [ent->type] = newSViv (ent->type);
442 SvREADONLY_on (sv_type [ent->type]);
443 }
444
445 av_store (avent, 0, namesv);
446 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
447 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
448
449 av_store (av, i, newRV_noinc ((SV *)avent));
450 }
451 else
452 av_store (av, i, namesv);
453
454 ++ent;
455 }
456 else
457 {
458 SV *name = newSVpv (names, 0);
459 av_store (av, i, name);
460 names += SvCUR (name) + 1;
461 }
462 }
463
464 rv = sv_2mortal (newRV_noinc ((SV *)av));
465 }
466
467 PUSHs (rv);
468
469 if (req->int1 & EIO_READDIR_CUSTOM1)
470 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
471 }
472 break;
473
474 case EIO_OPEN:
475 {
476 /* convert fd to fh */
477 SV *fh = &PL_sv_undef;
478
479 if (req->result >= 0)
480 {
481 GV *gv = (GV *)sv_newmortal ();
482 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
483 char sym [64];
484 int symlen;
485
486 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
487 gv_init (gv, aio_stash, sym, symlen, 0);
488
489 symlen = snprintf (
490 sym,
491 sizeof (sym),
492 "%s&=%d",
493 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
494 (int)req->result
495 );
496
497 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
498 fh = (SV *)gv;
499 }
500
501 PUSHs (fh);
502 }
503 break;
504
505 case EIO_STATVFS:
506 case EIO_FSTATVFS:
507 {
508 SV *rv = &PL_sv_undef;
509
510#ifndef _WIN32
511 if (req->result >= 0)
512 {
513 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
514 HV *hv = newHV ();
515 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
516 * chooses to make it a struct.
517 */
518 unsigned long fsid = 0;
519 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
520
521 rv = sv_2mortal (newRV_noinc ((SV *)hv));
522
523 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
524 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
525 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
526 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
527 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
528 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
529 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
530 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
531 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
532 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
533 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
534 }
535#endif
536
537 PUSHs (rv);
538 }
539
540 break;
541
542 case EIO_GROUP:
543 req->int1 = 2; /* mark group as finished */
544
545 if (req->sv1)
546 {
547 int i;
548 AV *av = (AV *)req->sv1;
549
550 EXTEND (SP, AvFILL (av) + 1);
551 for (i = 0; i <= AvFILL (av); ++i)
552 PUSHs (*av_fetch (av, i, 0));
553 }
554 break;
555
556 case EIO_NOP:
557 case EIO_BUSY:
558 break;
559
560 case EIO_READLINK:
561 case EIO_REALPATH:
562 if (req->result > 0)
563 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
564 break;
565
566 case EIO_STAT:
567 case EIO_LSTAT:
568 case EIO_FSTAT:
569 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
570
571 if (!(PL_laststatval = req->result))
572 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
573 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
574
575 PUSHs (sv_result);
576 break;
577
578 case EIO_SEEK:
579 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
580 break;
581
582 case EIO_READ:
583 {
584 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
585 *SvEND (req->sv2) = 0;
586 SvPOK_only (req->sv2);
587 SvSETMAGIC (req->sv2);
588 PUSHs (sv_result);
589 }
590 break;
591
592 case EIO_CUSTOM:
593 if (req->feed == fiemap)
594 {
595#if HAVE_FIEMAP
596 if (!req->result)
597 {
598 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
599
600 if (fiemap->fm_extent_count)
601 {
602 AV *av = newAV ();
603 int i;
604
605 while (fiemap->fm_mapped_extents)
606 {
607 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
608 AV *ext_av = newAV ();
609
610 av_store (ext_av, 3, newSVuv (extent->fe_flags));
611 av_store (ext_av, 2, newSVval64 (extent->fe_length));
612 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
613 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
614
615 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
616 }
617
618 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
619 }
620 else
621 {
622 SvIV_set (sv_result, fiemap->fm_mapped_extents);
623 PUSHs (sv_result);
624 }
625 }
626#endif
627 }
628 else
629 PUSHs (sv_result);
630 break;
631
632 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
633 if (req->result > 0)
634 SvIV_set (sv_result, 0);
635 /* FALLTHROUGH */
636
637 default:
638 PUSHs (sv_result);
639 break;
640 }
641
642 errno = req->errorno;
643
644 PUTBACK;
645 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
646 SPAGAIN;
647
648 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
649 SvREFCNT_dec (sv_result);
650 else
651 sv_result_cache = sv_result;
652
653 FREETMPS;
654 LEAVE;
655
656 PUTBACK;
630 } 657 }
631 while (type != REQ_QUIT); 658
659 return !!SvTRUE (ERRSV);
660}
661
662static void
663req_destroy (aio_req req)
664{
665 if (req->self)
666 {
667 sv_unmagic (req->self, PERL_MAGIC_ext);
668 SvREFCNT_dec (req->self);
669 }
670
671 SvREFCNT_dec (req->sv1);
672 SvREFCNT_dec (req->sv2);
673 SvREFCNT_dec (req->sv3);
674 SvREFCNT_dec (req->sv4);
675 SvREFCNT_dec (req->callback);
676
677 free (req);
678}
679
680static void
681req_cancel_subs (aio_req grp)
682{
683 if (grp->type != EIO_GROUP)
684 return;
685
686 SvREFCNT_dec (grp->sv2);
687 grp->sv2 = 0;
688
689 eio_grp_cancel (grp);
690}
691
692static void ecb_cold
693create_respipe (void)
694{
695 if (s_epipe_renew (&respipe))
696 croak ("IO::AIO: unable to initialize result pipe");
697}
698
699static void
700poll_wait (void)
701{
702 while (eio_nreqs ())
703 {
704 int size;
705
706 X_LOCK (reslock);
707 size = res_queue.size;
708 X_UNLOCK (reslock);
709
710 if (size)
711 return;
712
713 etp_maybe_start_thread ();
714
715 s_epipe_wait (&respipe);
716 }
717}
718
719static int
720poll_cb (void)
721{
722 for (;;)
723 {
724 int res = eio_poll ();
725
726 if (res > 0)
727 croak (0);
728
729 if (!max_outstanding || max_outstanding > eio_nreqs ())
730 return res;
731
732 poll_wait ();
733 }
734}
735
736static void ecb_cold
737reinit (void)
738{
739 create_respipe ();
740
741 if (eio_init (want_poll, done_poll) < 0)
742 croak ("IO::AIO: unable to initialise eio library");
743}
744
745/*****************************************************************************/
746
747#if !_POSIX_MAPPED_FILES
748# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
749# define munmap(addr,length) EIO_ENOSYS ()
750#endif
751
752#if !_POSIX_MEMORY_PROTECTION
753# define mprotect(addr,len,prot) EIO_ENOSYS ()
754# define PROT_NONE 0
755# define PROT_WRITE 0
756# define MAP_PRIVATE 0
757# define MAP_SHARED 0
758# define MAP_FIXED 0
759#endif
760
761#define MMAP_MAGIC PERL_MAGIC_ext
762
763static int ecb_cold
764mmap_free (pTHX_ SV *sv, MAGIC *mg)
765{
766 int old_errno = errno;
767 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
768 errno = old_errno;
769
770 mg->mg_obj = 0; /* just in case */
771
772 SvREADONLY_off (sv);
773
774 if (SvPVX (sv) != mg->mg_ptr)
775 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
776
777 SvCUR_set (sv, 0);
778 SvPVX (sv) = 0;
779 SvOK_off (sv);
632 780
633 return 0; 781 return 0;
634} 782}
635 783
784static MGVTBL mmap_vtbl = {
785 0, 0, 0, 0, mmap_free
786};
787
788/*****************************************************************************/
789
790static SV *
791get_cb (SV *cb_sv)
792{
793 SvGETMAGIC (cb_sv);
794 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
795}
796
797static aio_req ecb_noinline
798dreq (SV *callback)
799{
800 SV *cb_cv;
801 aio_req req;
802 int req_pri = next_pri;
803 next_pri = EIO_PRI_DEFAULT;
804
805 cb_cv = get_cb (callback);
806
807 req = calloc (sizeof (*req), 1);
808 if (!req)
809 croak ("out of memory during eio_req allocation");
810
811 req->callback = SvREFCNT_inc (cb_cv);
812 req->pri = req_pri;
813
814 return req;
815}
816
636#define dREQ \ 817#define dREQ \
637 aio_req req; \ 818 aio_req req = dreq (callback); \
819
820#define REQ_SEND \
821 PUTBACK; \
822 req_submit (req); \
823 SPAGAIN; \
638 \ 824 \
639 if (SvOK (callback) && !SvROK (callback)) \ 825 if (GIMME_V != G_VOID) \
640 croak ("clalback must be undef or of reference type"); \ 826 XPUSHs (req_sv (req, aio_req_stash));
641 \ 827
642 Newz (0, req, 1, aio_cb); \ 828ecb_inline void
643 if (!req) \ 829req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
644 croak ("out of memory during aio_req allocation"); \ 830{
645 \ 831 if (expect_false (SvROK (path)))
646 req->callback = newSVsv (callback); 832 {
647 833 SV *rv = SvRV (path);
834 SV *wdob;
835
836 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
837 {
838 path = AvARRAY (rv)[1];
839 wdob = AvARRAY (rv)[0];
840
841 if (SvOK (wdob))
842 {
843 *wd = SvAIO_WD (wdob);
844 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
845 }
846 else
847 *wd = EIO_INVALID_WD;
848 }
849 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
850 {
851 *wd = (aio_wd)(long)SvIVX (rv);
852 *wdsv = SvREFCNT_inc_NN (rv);
853 *ptr = ".";
854 return; /* path set to "." */
855 }
856 else
857 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
858 }
859
860 *pathsv = newSVsv (path);
861 *ptr = SvPVbyte_nolen (*pathsv);
862}
863
864static void ecb_noinline
865req_set_path1 (aio_req req, SV *path)
866{
867 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
868}
869
870static void ecb_noinline
871req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
872{
873 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
874
875 switch (SvTYPE (rv))
876 {
877 case SVt_PVIO:
878 case SVt_PVLV:
879 case SVt_PVGV:
880 req->type = type_fh;
881 req->sv1 = newSVsv (fh_or_path);
882 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
883 break;
884
885 default:
886 req->type = type_path;
887 req_set_path1 (req, fh_or_path);
888 break;
889 }
890}
891
892XS(boot_IO__AIO) ecb_cold;
893
648MODULE = IO::AIO PACKAGE = IO::AIO 894MODULE = IO::AIO PACKAGE = IO::AIO
649 895
650PROTOTYPES: ENABLE 896PROTOTYPES: ENABLE
651 897
652BOOT: 898BOOT:
653{ 899{
654 create_pipe (); 900 static const struct {
655 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 901 const char *name;
656} 902 IV iv;
903 } *civ, const_iv[] = {
904# define const_niv(name, value) { # name, (IV) value },
905# define const_iv(name) { # name, (IV) name },
906# define const_eio(name) { # name, (IV) EIO_ ## name },
657 907
908 /* you have to re-run ./gendef0 after adding/Removing any constants here */
909
910 const_iv (ENOSYS)
911 const_iv (EXDEV)
912 const_iv (EBADR)
913
914 const_iv (O_RDONLY)
915 const_iv (O_WRONLY)
916 const_iv (O_RDWR)
917 const_iv (O_CREAT)
918 const_iv (O_TRUNC)
919 const_iv (O_EXCL)
920 const_iv (O_APPEND)
921
922 const_iv (O_ASYNC)
923 const_iv (O_DIRECT)
924 const_iv (O_NOATIME)
925
926 const_iv (O_CLOEXEC)
927 const_iv (O_NOCTTY)
928 const_iv (O_NOFOLLOW)
929 const_iv (O_NONBLOCK)
930 const_iv (O_EXEC)
931 const_iv (O_SEARCH)
932 const_iv (O_DIRECTORY)
933 const_iv (O_DSYNC)
934 const_iv (O_RSYNC)
935 const_iv (O_SYNC)
936 const_iv (O_TTY_INIT)
937
938 const_iv (S_IFIFO)
939 const_iv (S_IFCHR)
940 const_iv (S_IFBLK)
941 const_iv (S_IFLNK)
942 const_iv (S_IFREG)
943 const_iv (S_IFDIR)
944 const_iv (S_IFWHT)
945 const_iv (S_IFSOCK)
946 const_iv (S_IFMT)
947
948 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
949 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
950 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
951 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
952 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
953 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
954
955 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
956 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
957 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
958 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
959 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
960
961 const_iv (ST_RDONLY)
962 const_iv (ST_NOSUID)
963 const_iv (ST_NODEV)
964 const_iv (ST_NOEXEC)
965 const_iv (ST_SYNCHRONOUS)
966 const_iv (ST_MANDLOCK)
967 const_iv (ST_WRITE)
968 const_iv (ST_APPEND)
969 const_iv (ST_IMMUTABLE)
970 const_iv (ST_NOATIME)
971 const_iv (ST_NODIRATIME)
972 const_iv (ST_RELATIME)
973
974 const_iv (PROT_NONE)
975 const_iv (PROT_EXEC)
976 const_iv (PROT_READ)
977 const_iv (PROT_WRITE)
978
979 /*const_iv (MAP_FIXED)*/
980 const_iv (MAP_PRIVATE)
981 const_iv (MAP_SHARED)
982 const_iv (MAP_ANONYMOUS)
983
984 /* linuxish */
985 const_iv (MAP_HUGETLB)
986 const_iv (MAP_LOCKED)
987 const_iv (MAP_NORESERVE)
988 const_iv (MAP_POPULATE)
989 const_iv (MAP_NONBLOCK)
990
991 const_iv (FIEMAP_FLAG_SYNC)
992 const_iv (FIEMAP_FLAG_XATTR)
993 const_iv (FIEMAP_FLAGS_COMPAT)
994 const_iv (FIEMAP_EXTENT_LAST)
995 const_iv (FIEMAP_EXTENT_UNKNOWN)
996 const_iv (FIEMAP_EXTENT_DELALLOC)
997 const_iv (FIEMAP_EXTENT_ENCODED)
998 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
999 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1000 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1001 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1002 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1003 const_iv (FIEMAP_EXTENT_MERGED)
1004 const_iv (FIEMAP_EXTENT_SHARED)
1005
1006 const_iv (SPLICE_F_MOVE)
1007 const_iv (SPLICE_F_NONBLOCK)
1008 const_iv (SPLICE_F_MORE)
1009 const_iv (SPLICE_F_GIFT)
1010
1011 const_iv (SEEK_DATA)
1012 const_iv (SEEK_HOLE)
1013
1014 /* libeio constants */
1015 const_eio (SEEK_SET)
1016 const_eio (SEEK_CUR)
1017 const_eio (SEEK_END)
1018
1019 const_eio (MCL_FUTURE)
1020 const_eio (MCL_CURRENT)
1021
1022 const_eio (MS_ASYNC)
1023 const_eio (MS_INVALIDATE)
1024 const_eio (MS_SYNC)
1025
1026 const_eio (MT_MODIFY)
1027
1028 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1029 const_eio (SYNC_FILE_RANGE_WRITE)
1030 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1031
1032 const_eio (FALLOC_FL_KEEP_SIZE)
1033 const_eio (FALLOC_FL_PUNCH_HOLE)
1034
1035 const_eio (READDIR_DENTS)
1036 const_eio (READDIR_DIRS_FIRST)
1037 const_eio (READDIR_STAT_ORDER)
1038 const_eio (READDIR_FOUND_UNKNOWN)
1039
1040 const_eio (DT_UNKNOWN)
1041 const_eio (DT_FIFO)
1042 const_eio (DT_CHR)
1043 const_eio (DT_DIR)
1044 const_eio (DT_BLK)
1045 const_eio (DT_REG)
1046 const_eio (DT_LNK)
1047 const_eio (DT_SOCK)
1048 const_eio (DT_WHT)
1049 };
1050
1051 aio_stash = gv_stashpv ("IO::AIO" , 1);
1052 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1053 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1054 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1055
1056 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1057 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1058
1059 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1060
1061 reinit ();
1062}
1063
658void 1064void
659min_parallel(nthreads) 1065reinit ()
660 int nthreads 1066 PROTOTYPE:
1067
1068void
1069max_poll_reqs (unsigned int nreqs)
661 PROTOTYPE: $ 1070 PROTOTYPE: $
1071 CODE:
1072 eio_set_max_poll_reqs (nreqs);
662 1073
663void 1074void
664max_parallel(nthreads) 1075max_poll_time (double nseconds)
665 int nthreads
666 PROTOTYPE: $ 1076 PROTOTYPE: $
667
668int
669max_outstanding(nreqs)
670 int nreqs
671 PROTOTYPE: $
672 CODE: 1077 CODE:
673 RETVAL = max_outstanding; 1078 eio_set_max_poll_time (nseconds);
1079
1080void
1081min_parallel (unsigned int nthreads)
1082 PROTOTYPE: $
1083 CODE:
1084 eio_set_min_parallel (nthreads);
1085
1086void
1087max_parallel (unsigned int nthreads)
1088 PROTOTYPE: $
1089 CODE:
1090 eio_set_max_parallel (nthreads);
1091
1092void
1093max_idle (unsigned int nthreads)
1094 PROTOTYPE: $
1095 CODE:
1096 eio_set_max_idle (nthreads);
1097
1098void
1099idle_timeout (unsigned int seconds)
1100 PROTOTYPE: $
1101 CODE:
1102 eio_set_idle_timeout (seconds);
1103
1104void
1105max_outstanding (unsigned int maxreqs)
1106 PROTOTYPE: $
1107 CODE:
674 max_outstanding = nreqs; 1108 max_outstanding = maxreqs;
675 1109
676void 1110void
677aio_open(pathname,flags,mode,callback=&PL_sv_undef) 1111aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
678 SV * pathname
679 int flags
680 int mode
681 SV * callback
682 PROTOTYPE: $$$;$
683 CODE: 1112 PPCODE:
684{ 1113{
685 dREQ; 1114 dREQ;
686 1115
1116 req->type = EIO_WD_OPEN;
1117 req_set_path1 (req, pathname);
1118
1119 REQ_SEND;
1120}
1121
1122void
1123aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1124 PPCODE:
1125{
1126 dREQ;
1127
687 req->type = REQ_OPEN; 1128 req->type = EIO_OPEN;
688 req->data = newSVsv (pathname); 1129 req_set_path1 (req, pathname);
689 req->dataptr = SvPVbyte_nolen (req->data);
690 req->fd = flags; 1130 req->int1 = flags;
691 req->mode = mode; 1131 req->int2 = mode;
692 1132
693 send_req (req); 1133 REQ_SEND;
694} 1134}
695 1135
696void 1136void
697aio_close(fh,callback=&PL_sv_undef) 1137aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
698 SV * fh
699 SV * callback
700 PROTOTYPE: $;$
701 ALIAS: 1138 ALIAS:
702 aio_close = REQ_CLOSE
703 aio_fsync = REQ_FSYNC 1139 aio_fsync = EIO_FSYNC
704 aio_fdatasync = REQ_FDATASYNC 1140 aio_fdatasync = EIO_FDATASYNC
1141 aio_syncfs = EIO_SYNCFS
705 CODE: 1142 PPCODE:
706{ 1143{
1144 int fd = s_fileno_croak (fh, 0);
707 dREQ; 1145 dREQ;
708 1146
709 req->type = ix; 1147 req->type = ix;
710 req->fh = newSVsv (fh); 1148 req->sv1 = newSVsv (fh);
711 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1149 req->int1 = fd;
712 1150
713 send_req (req); 1151 REQ_SEND;
714} 1152}
715 1153
716void 1154void
1155aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1156 PPCODE:
1157{
1158 int fd = s_fileno_croak (fh, 0);
1159 dREQ;
1160
1161 req->type = EIO_SYNC_FILE_RANGE;
1162 req->sv1 = newSVsv (fh);
1163 req->int1 = fd;
1164 req->offs = offset;
1165 req->size = nbytes;
1166 req->int2 = flags;
1167
1168 REQ_SEND;
1169}
1170
1171void
1172aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1173 PPCODE:
1174{
1175 int fd = s_fileno_croak (fh, 0);
1176 dREQ;
1177
1178 req->type = EIO_FALLOCATE;
1179 req->sv1 = newSVsv (fh);
1180 req->int1 = fd;
1181 req->int2 = mode;
1182 req->offs = offset;
1183 req->size = len;
1184
1185 REQ_SEND;
1186}
1187
1188void
1189aio_close (SV *fh, SV *callback=&PL_sv_undef)
1190 PPCODE:
1191{
1192 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1193 int fd = s_fileno_croak (fh, 0);
1194 dREQ;
1195
1196 if (expect_false (close_fd < 0))
1197 {
1198 int pipefd [2];
1199
1200 if (
1201#ifdef _WIN32
1202 _pipe (pipefd, 1, _O_BINARY) < 0
1203#else
1204 pipe (pipefd) < 0
1205 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1206#endif
1207 || close (pipefd [1]) < 0
1208 )
1209 abort (); /*D*/
1210
1211 close_fd = pipefd [0];
1212 }
1213
1214 req->type = EIO_DUP2;
1215 req->int1 = close_fd;
1216 req->sv2 = newSVsv (fh);
1217 req->int2 = fd;
1218
1219 REQ_SEND;
1220}
1221
1222void
1223aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1224 PPCODE:
1225{
1226 int fd = s_fileno_croak (fh, 0);
1227 dREQ;
1228
1229 req->type = EIO_SEEK;
1230 req->sv1 = newSVsv (fh);
1231 req->int1 = fd;
1232 req->offs = SvVAL64 (offset);
1233 req->int2 = whence;
1234
1235 REQ_SEND;
1236}
1237
1238void
717aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1239aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
718 SV * fh
719 UV offset
720 UV length
721 SV * data
722 UV dataoffset
723 SV * callback
724 ALIAS: 1240 ALIAS:
725 aio_read = REQ_READ 1241 aio_read = EIO_READ
726 aio_write = REQ_WRITE 1242 aio_write = EIO_WRITE
727 PROTOTYPE: $$$$$;$
728 CODE: 1243 PPCODE:
729{ 1244{
730 aio_req req;
731 STRLEN svlen; 1245 STRLEN svlen;
1246 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
732 char *svptr = SvPVbyte (data, svlen); 1247 char *svptr = SvPVbyte (data, svlen);
733 1248 UV len = SvUV (length);
734 SvUPGRADE (data, SVt_PV);
735 SvPOK_on (data);
736 1249
737 if (dataoffset < 0) 1250 if (dataoffset < 0)
738 dataoffset += svlen; 1251 dataoffset += svlen;
739 1252
740 if (dataoffset < 0 || dataoffset > svlen) 1253 if (dataoffset < 0 || dataoffset > svlen)
741 croak ("data offset outside of string"); 1254 croak ("dataoffset outside of data scalar");
742 1255
743 if (ix == REQ_WRITE) 1256 if (ix == EIO_WRITE)
744 { 1257 {
745 /* write: check length and adjust. */ 1258 /* write: check length and adjust. */
746 if (length < 0 || length + dataoffset > svlen) 1259 if (!SvOK (length) || len + dataoffset > svlen)
747 length = svlen - dataoffset; 1260 len = svlen - dataoffset;
748 } 1261 }
749 else 1262 else
750 { 1263 {
751 /* read: grow scalar as necessary */ 1264 /* read: check type and grow scalar as necessary */
1265 SvUPGRADE (data, SVt_PV);
1266 if (SvLEN (data) >= SvCUR (data))
752 svptr = SvGROW (data, length + dataoffset); 1267 svptr = SvGROW (data, len + dataoffset + 1);
1268 else if (SvCUR (data) < len + dataoffset)
1269 croak ("length + dataoffset outside of scalar, and cannot grow");
753 } 1270 }
754
755 if (length < 0)
756 croak ("length must not be negative");
757 1271
758 { 1272 {
759 dREQ; 1273 dREQ;
760 1274
761 req->type = ix; 1275 req->type = ix;
762 req->fh = newSVsv (fh); 1276 req->sv1 = newSVsv (fh);
763 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1277 req->int1 = fd;
764 : IoOFP (sv_2io (fh))); 1278 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
765 req->offset = offset; 1279 req->size = len;
766 req->length = length;
767 req->data = SvREFCNT_inc (data); 1280 req->sv2 = SvREFCNT_inc (data);
768 req->dataptr = (char *)svptr + dataoffset; 1281 req->ptr2 = (char *)svptr + dataoffset;
1282 req->stroffset = dataoffset;
769 1283
770 if (!SvREADONLY (data)) 1284 if (!SvREADONLY (data))
771 { 1285 {
772 SvREADONLY_on (data); 1286 SvREADONLY_on (data);
773 req->data2ptr = (void *)data; 1287 req->flags |= FLAG_SV2_RO_OFF;
774 } 1288 }
775 1289
776 send_req (req); 1290 REQ_SEND;
777 } 1291 }
778} 1292}
779 1293
780void 1294void
781aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1295aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
782 SV * out_fh 1296 ALIAS:
783 SV * in_fh 1297 aio_readlink = EIO_READLINK
784 UV in_offset 1298 aio_realpath = EIO_REALPATH
785 UV length
786 SV * callback
787 PROTOTYPE: $$$$;$
788 CODE: 1299 PPCODE:
789{ 1300{
1301 dREQ;
1302
1303 req->type = ix;
1304 req_set_path1 (req, pathname);
1305
1306 REQ_SEND;
1307}
1308
1309void
1310aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1311 PPCODE:
1312{
1313 int ifd = s_fileno_croak (in_fh , 0);
1314 int ofd = s_fileno_croak (out_fh, 1);
790 dREQ; 1315 dREQ;
791 1316
792 req->type = REQ_SENDFILE; 1317 req->type = EIO_SENDFILE;
793 req->fh = newSVsv (out_fh); 1318 req->sv1 = newSVsv (out_fh);
794 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1319 req->int1 = ofd;
795 req->fh2 = newSVsv (in_fh); 1320 req->sv2 = newSVsv (in_fh);
796 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1321 req->int2 = ifd;
797 req->offset = in_offset; 1322 req->offs = in_offset;
798 req->length = length; 1323 req->size = length;
799 1324
800 send_req (req); 1325 REQ_SEND;
801} 1326}
802 1327
803void 1328void
804aio_readahead(fh,offset,length,callback=&PL_sv_undef) 1329aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
805 SV * fh
806 UV offset
807 IV length
808 SV * callback
809 PROTOTYPE: $$$;$
810 CODE: 1330 PPCODE:
811{ 1331{
1332 int fd = s_fileno_croak (fh, 0);
812 dREQ; 1333 dREQ;
813 1334
814 req->type = REQ_READAHEAD; 1335 req->type = EIO_READAHEAD;
815 req->fh = newSVsv (fh); 1336 req->sv1 = newSVsv (fh);
816 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1337 req->int1 = fd;
817 req->offset = offset; 1338 req->offs = offset;
818 req->length = length; 1339 req->size = length;
819 1340
820 send_req (req); 1341 REQ_SEND;
821} 1342}
822 1343
823void 1344void
824aio_stat(fh_or_path,callback=&PL_sv_undef) 1345aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
825 SV * fh_or_path
826 SV * callback
827 ALIAS: 1346 ALIAS:
828 aio_stat = REQ_STAT 1347 aio_stat = EIO_STAT
829 aio_lstat = REQ_LSTAT 1348 aio_lstat = EIO_LSTAT
1349 aio_statvfs = EIO_STATVFS
1350 PPCODE:
1351{
1352 dREQ;
1353
1354 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1355
1356 REQ_SEND;
1357}
1358
1359UV
1360major (UV dev)
1361 ALIAS:
1362 minor = 1
830 CODE: 1363 CODE:
1364 RETVAL = ix ? major (dev) : minor (dev);
1365 OUTPUT:
1366 RETVAL
1367
1368UV
1369makedev (UV maj, UV min)
1370 CODE:
1371 RETVAL = makedev (maj, min);
1372 OUTPUT:
1373 RETVAL
1374
1375void
1376aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1377 PPCODE:
831{ 1378{
832 dREQ; 1379 dREQ;
833 1380
834 New (0, req->statdata, 1, Stat_t); 1381 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
835 if (!req->statdata) 1382 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
836 { 1383 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
837 free_req (req);
838 croak ("out of memory during aio_req->statdata allocation");
839 }
840 1384
841 if (SvPOK (fh_or_path)) 1385 REQ_SEND;
842 {
843 req->type = ix;
844 req->data = newSVsv (fh_or_path);
845 req->dataptr = SvPVbyte_nolen (req->data);
846 }
847 else
848 {
849 req->type = REQ_FSTAT;
850 req->fh = newSVsv (fh_or_path);
851 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
852 }
853
854 send_req (req);
855} 1386}
856 1387
857void 1388void
1389aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1390 PPCODE:
1391{
1392 dREQ;
1393
1394 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1395 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1396
1397 REQ_SEND;
1398}
1399
1400void
1401aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1402 PPCODE:
1403{
1404 dREQ;
1405
1406 req->int2 = mode;
1407 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1408
1409 REQ_SEND;
1410}
1411
1412void
1413aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1414 PPCODE:
1415{
1416 dREQ;
1417
1418 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1419 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1420 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1421
1422 REQ_SEND;
1423}
1424
1425void
1426aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1427 PPCODE:
1428{
1429 dREQ;
1430
1431 req->type = EIO_READDIR;
1432 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1433
1434 if (flags & EIO_READDIR_DENTS)
1435 req->int1 |= EIO_READDIR_CUSTOM2;
1436
1437 req_set_path1 (req, pathname);
1438
1439 REQ_SEND;
1440}
1441
1442void
1443aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1444 PPCODE:
1445{
1446 dREQ;
1447
1448 req->type = EIO_MKDIR;
1449 req->int2 = mode;
1450 req_set_path1 (req, pathname);
1451
1452 REQ_SEND;
1453}
1454
1455void
858aio_unlink(pathname,callback=&PL_sv_undef) 1456aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
859 SV * pathname
860 SV * callback
861 ALIAS: 1457 ALIAS:
862 aio_unlink = REQ_UNLINK 1458 aio_unlink = EIO_UNLINK
863 aio_rmdir = REQ_RMDIR 1459 aio_rmdir = EIO_RMDIR
1460 aio_readdir = EIO_READDIR
864 CODE: 1461 PPCODE:
865{ 1462{
866 dREQ; 1463 dREQ;
867 1464
868 req->type = ix; 1465 req->type = ix;
869 req->data = newSVsv (pathname); 1466 req_set_path1 (req, pathname);
870 req->dataptr = SvPVbyte_nolen (req->data);
871
872 send_req (req);
873}
874 1467
1468 REQ_SEND;
1469}
1470
875void 1471void
876aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1472aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
877 SV * oldpath 1473 ALIAS:
878 SV * newpath 1474 aio_link = EIO_LINK
879 SV * callback 1475 aio_symlink = EIO_SYMLINK
1476 aio_rename = EIO_RENAME
880 CODE: 1477 PPCODE:
881{ 1478{
1479 eio_wd wd2 = 0;
882 dREQ; 1480 dREQ;
883 1481
884 req->type = REQ_SYMLINK; 1482 req->type = ix;
885 req->fh = newSVsv (oldpath); 1483 req_set_path1 (req, oldpath);
886 req->data2ptr = SvPVbyte_nolen (req->fh); 1484 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
887 req->data = newSVsv (newpath); 1485 req->int3 = (long)wd2;
888 req->dataptr = SvPVbyte_nolen (req->data);
889 1486
890 send_req (req); 1487 REQ_SEND;
891} 1488}
892 1489
893void 1490void
894flush() 1491aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
895 PROTOTYPE: 1492 PPCODE:
1493{
1494 dREQ;
1495
1496 req->type = EIO_MKNOD;
1497 req->int2 = (mode_t)mode;
1498 req->offs = dev;
1499 req_set_path1 (req, pathname);
1500
1501 REQ_SEND;
1502}
1503
1504void
1505aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1506 ALIAS:
1507 aio_mtouch = EIO_MTOUCH
1508 aio_msync = EIO_MSYNC
1509 PPCODE:
1510{
1511 STRLEN svlen;
1512 char *svptr = SvPVbyte (data, svlen);
1513 UV len = SvUV (length);
1514
1515 if (offset < 0)
1516 offset += svlen;
1517
1518 if (offset < 0 || offset > svlen)
1519 croak ("offset outside of scalar");
1520
1521 if (!SvOK (length) || len + offset > svlen)
1522 len = svlen - offset;
1523
1524 {
1525 dREQ;
1526
1527 req->type = ix;
1528 req->sv2 = SvREFCNT_inc (data);
1529 req->ptr2 = (char *)svptr + offset;
1530 req->size = len;
1531 req->int1 = flags;
1532
1533 REQ_SEND;
1534 }
1535}
1536
1537void
1538aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1539 PPCODE:
1540{
1541 STRLEN svlen;
1542 char *svptr = SvPVbyte (data, svlen);
1543 UV len = SvUV (length);
1544
1545 if (offset < 0)
1546 offset += svlen;
1547
1548 if (offset < 0 || offset > svlen)
1549 croak ("offset outside of scalar");
1550
1551 if (!SvOK (length) || len + offset > svlen)
1552 len = svlen - offset;
1553
1554 {
1555 dREQ;
1556
1557 req->type = EIO_MLOCK;
1558 req->sv2 = SvREFCNT_inc (data);
1559 req->ptr2 = (char *)svptr + offset;
1560 req->size = len;
1561
1562 REQ_SEND;
1563 }
1564}
1565
1566void
1567aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1568 PPCODE:
1569{
1570 dREQ;
1571
1572 req->type = EIO_MLOCKALL;
1573 req->int1 = flags;
1574
1575 REQ_SEND;
1576}
1577
1578void
1579aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1580 PPCODE:
1581{
1582 int fd = s_fileno_croak (fh, 0);
1583 dREQ;
1584
1585 req->type = EIO_CUSTOM;
1586 req->sv1 = newSVsv (fh);
1587 req->int1 = fd;
1588
1589 req->feed = fiemap;
1590#if HAVE_FIEMAP
1591 /* keep our fingers crossed that the next two types are 64 bit */
1592 req->offs = start;
1593 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1594 req->int2 = flags;
1595 req->int3 = SvOK (count) ? SvIV (count) : -1;
1596#endif
1597
1598 REQ_SEND;
1599}
1600
1601void
1602aio_busy (double delay, SV *callback=&PL_sv_undef)
1603 PPCODE:
1604{
1605 dREQ;
1606
1607 req->type = EIO_BUSY;
1608 req->nv1 = delay < 0. ? 0. : delay;
1609
1610 REQ_SEND;
1611}
1612
1613void
1614aio_group (SV *callback=&PL_sv_undef)
1615 PPCODE:
1616{
1617 dREQ;
1618
1619 req->type = EIO_GROUP;
1620
1621 req_submit (req);
1622 XPUSHs (req_sv (req, aio_grp_stash));
1623}
1624
1625void
1626aio_nop (SV *callback=&PL_sv_undef)
1627 ALIAS:
1628 aio_nop = EIO_NOP
1629 aio_sync = EIO_SYNC
1630 PPCODE:
1631{
1632 dREQ;
1633
1634 req->type = ix;
1635
1636 REQ_SEND;
1637}
1638
1639int
1640aioreq_pri (int pri = 0)
896 CODE: 1641 CODE:
1642 RETVAL = next_pri;
1643 if (items > 0)
1644 {
1645 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1646 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1647 next_pri = pri;
1648 }
1649 OUTPUT:
1650 RETVAL
1651
1652void
1653aioreq_nice (int nice = 0)
1654 CODE:
1655 nice = next_pri - nice;
1656 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1657 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1658 next_pri = nice;
1659
1660void
1661flush ()
1662 CODE:
897 while (nreqs) 1663 while (eio_nreqs ())
898 { 1664 {
899 poll_wait (); 1665 poll_wait ();
900 poll_cb (); 1666 poll_cb ();
901 } 1667 }
902 1668
903void 1669int
904poll() 1670poll ()
905 PROTOTYPE:
906 CODE: 1671 CODE:
907 if (nreqs)
908 {
909 poll_wait (); 1672 poll_wait ();
910 poll_cb (); 1673 RETVAL = poll_cb ();
911 }
912
913int
914poll_fileno()
915 PROTOTYPE:
916 CODE:
917 RETVAL = respipe [0];
918 OUTPUT: 1674 OUTPUT:
919 RETVAL 1675 RETVAL
920 1676
921int 1677int
1678poll_fileno ()
1679 CODE:
1680 RETVAL = s_epipe_fd (&respipe);
1681 OUTPUT:
1682 RETVAL
1683
1684int
922poll_cb(...) 1685poll_cb (...)
923 PROTOTYPE: 1686 PROTOTYPE:
924 CODE: 1687 CODE:
925 RETVAL = poll_cb (); 1688 RETVAL = poll_cb ();
926 OUTPUT: 1689 OUTPUT:
927 RETVAL 1690 RETVAL
928 1691
929void 1692void
930poll_wait() 1693poll_wait ()
931 PROTOTYPE:
932 CODE: 1694 CODE:
933 if (nreqs)
934 poll_wait (); 1695 poll_wait ();
935 1696
936int 1697int
937nreqs() 1698nreqs ()
938 PROTOTYPE:
939 CODE: 1699 CODE:
940 RETVAL = nreqs; 1700 RETVAL = eio_nreqs ();
941 OUTPUT: 1701 OUTPUT:
942 RETVAL 1702 RETVAL
943 1703
1704int
1705nready ()
1706 CODE:
1707 RETVAL = eio_nready ();
1708 OUTPUT:
1709 RETVAL
1710
1711int
1712npending ()
1713 CODE:
1714 RETVAL = eio_npending ();
1715 OUTPUT:
1716 RETVAL
1717
1718int
1719nthreads ()
1720 CODE:
1721 RETVAL = eio_nthreads ();
1722 OUTPUT:
1723 RETVAL
1724
1725int
1726fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1727 CODE:
1728 RETVAL = posix_fadvise (fh, offset, length, advice);
1729 OUTPUT:
1730 RETVAL
1731
1732IV
1733sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1734 CODE:
1735 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1736 OUTPUT:
1737 RETVAL
1738
1739void
1740mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1741 PPCODE:
1742 sv_unmagic (scalar, MMAP_MAGIC);
1743{
1744 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1745 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1746 if (addr == (void *)-1)
1747 XSRETURN_NO;
1748
1749 sv_force_normal (scalar);
1750
1751 /* we store the length in mg_obj, as namlen is I32 :/ */
1752 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1753 ->mg_obj = (SV *)length;
1754
1755 SvUPGRADE (scalar, SVt_PV); /* nop... */
1756
1757 if (!(prot & PROT_WRITE))
1758 SvREADONLY_on (scalar);
1759
1760 if (SvLEN (scalar))
1761 Safefree (SvPVX (scalar));
1762
1763 SvPVX (scalar) = (char *)addr;
1764 SvCUR_set (scalar, length);
1765 SvLEN_set (scalar, 0);
1766 SvPOK_only (scalar);
1767
1768 XSRETURN_YES;
1769}
1770
1771void
1772munmap (SV *scalar)
1773 CODE:
1774 sv_unmagic (scalar, MMAP_MAGIC);
1775
1776int
1777madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1778 ALIAS:
1779 mprotect = 1
1780 CODE:
1781{
1782 STRLEN svlen;
1783 void *addr = SvPVbyte (scalar, svlen);
1784 size_t len = SvUV (length);
1785
1786 if (offset < 0)
1787 offset += svlen;
1788
1789 if (offset < 0 || offset > svlen)
1790 croak ("offset outside of scalar");
1791
1792 if (!SvOK (length) || len + offset > svlen)
1793 len = svlen - offset;
1794
1795 addr = (void *)(((intptr_t)addr) + offset);
1796 eio_page_align (&addr, &len);
1797
1798 switch (ix)
1799 {
1800 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1801 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1802 }
1803}
1804 OUTPUT:
1805 RETVAL
1806
1807int
1808munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1809 CODE:
1810{
1811 STRLEN svlen;
1812 void *addr = SvPVbyte (scalar, svlen);
1813 size_t len = SvUV (length);
1814
1815 if (offset < 0)
1816 offset += svlen;
1817
1818 if (offset < 0 || offset > svlen)
1819 croak ("offset outside of scalar");
1820
1821 if (!SvOK (length) || len + offset > svlen)
1822 len = svlen - offset;
1823
1824 addr = (void *)(((intptr_t)addr) + offset);
1825 eio_page_align (&addr, &len);
1826#if _POSIX_MEMLOCK_RANGE
1827 RETVAL = munlock (addr, len);
1828#else
1829 RETVAL = EIO_ENOSYS ();
1830#endif
1831}
1832 OUTPUT:
1833 RETVAL
1834
1835int
1836munlockall ()
1837 CODE:
1838#if _POSIX_MEMLOCK
1839 munlockall ();
1840#else
1841 RETVAL = EIO_ENOSYS ();
1842#endif
1843 OUTPUT:
1844 RETVAL
1845
1846int
1847splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1848 CODE:
1849{
1850#if HAVE_LINUX_SPLICE
1851 loff_t off_in_, off_out_;
1852 RETVAL = splice (
1853 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1854 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1855 length, flags
1856 );
1857#else
1858 RETVAL = EIO_ENOSYS ();
1859#endif
1860}
1861 OUTPUT:
1862 RETVAL
1863
1864int
1865tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1866 CODE:
1867#if HAVE_LINUX_SPLICE
1868 RETVAL = tee (rfh, wfh, length, flags);
1869#else
1870 RETVAL = EIO_ENOSYS ();
1871#endif
1872 OUTPUT:
1873 RETVAL
1874
1875void _on_next_submit (SV *cb)
1876 CODE:
1877 SvREFCNT_dec (on_next_submit);
1878 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1879
1880PROTOTYPES: DISABLE
1881
1882MODULE = IO::AIO PACKAGE = IO::AIO::WD
1883
1884BOOT:
1885{
1886 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1887 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1888}
1889
1890void
1891DESTROY (SV *self)
1892 CODE:
1893{
1894 aio_wd wd = SvAIO_WD (self);
1895#if HAVE_AT
1896 {
1897 SV *callback = &PL_sv_undef;
1898 dREQ; /* clobbers next_pri :/ */
1899 next_pri = req->pri; /* restore next_pri */
1900 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1901 req->type = EIO_WD_CLOSE;
1902 req->wd = wd;
1903 REQ_SEND;
1904 }
1905#else
1906 eio_wd_close_sync (wd);
1907#endif
1908}
1909
1910MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1911
1912void
1913cancel (aio_req_ornot req)
1914 CODE:
1915 eio_cancel (req);
1916
1917void
1918cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1919 PPCODE:
1920{
1921 if (GIMME_V != G_VOID)
1922 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1923
1924 if (items > 1)
1925 {
1926 SV *cb_cv =get_cb (callback);
1927
1928 SvREFCNT_dec (req->callback);
1929 req->callback = SvREFCNT_inc (cb_cv);
1930 }
1931}
1932
1933MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1934
1935void
1936add (aio_req grp, ...)
1937 PPCODE:
1938{
1939 int i;
1940
1941 if (grp->int1 == 2)
1942 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1943
1944 for (i = 1; i < items; ++i )
1945 {
1946 aio_req req;
1947
1948 if (GIMME_V != G_VOID)
1949 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1950
1951 req = SvAIO_REQ (ST (i));
1952
1953 if (req)
1954 eio_grp_add (grp, req);
1955 }
1956}
1957
1958void
1959cancel_subs (aio_req_ornot req)
1960 CODE:
1961 req_cancel_subs (req);
1962
1963void
1964result (aio_req grp, ...)
1965 CODE:
1966{
1967 int i;
1968 AV *av;
1969
1970 grp->errorno = errno;
1971
1972 av = newAV ();
1973 av_extend (av, items - 1);
1974
1975 for (i = 1; i < items; ++i )
1976 av_push (av, newSVsv (ST (i)));
1977
1978 SvREFCNT_dec (grp->sv1);
1979 grp->sv1 = (SV *)av;
1980}
1981
1982void
1983errno (aio_req grp, int errorno = errno)
1984 CODE:
1985 grp->errorno = errorno;
1986
1987void
1988limit (aio_req grp, int limit)
1989 CODE:
1990 eio_grp_limit (grp, limit);
1991
1992void
1993feed (aio_req grp, SV *callback=&PL_sv_undef)
1994 CODE:
1995{
1996 SvREFCNT_dec (grp->sv2);
1997 grp->sv2 = newSVsv (callback);
1998 grp->feed = aio_grp_feed;
1999
2000 if (grp->int2 <= 0)
2001 grp->int2 = 2;
2002
2003 eio_grp_limit (grp, grp->int2);
2004}
2005

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