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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.29 by root, Wed Aug 17 06:12:10 2005 UTC vs.
Revision 1.180 by root, Fri Feb 11 00:05:17 2011 UTC

1#define _REENTRANT 1 1#include "libeio/xthread.h"
2
2#include <errno.h> 3#include <errno.h>
3 4
4#include "EXTERN.h" 5#include "EXTERN.h"
5#include "perl.h" 6#include "perl.h"
6#include "XSUB.h" 7#include "XSUB.h"
7 8
8#include "autoconf/config.h" 9#include "schmorp.h"
9 10
11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h>
10#include <sys/types.h> 14#include <sys/types.h>
11#include <sys/stat.h> 15#include <sys/stat.h>
12 16#include <sys/statvfs.h>
13#include <unistd.h> 17#include <limits.h>
14#include <fcntl.h> 18#include <fcntl.h>
15#include <signal.h>
16#include <sched.h> 19#include <sched.h>
17 20
18#include <pthread.h> 21#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
22# include <sys/mman.h>
23#endif
19 24
20typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 25/* perl namespace pollution */
21typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 26#undef VERSION
22typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
23 27
24#if __ia64 28#ifdef _WIN32
25# define STACKSIZE 65536 29
30# define EIO_STRUCT_DIRENT Direntry_t
31# undef malloc
32# undef free
33
34// perl overrides all those nice win32 functions
35# undef open
36# undef read
37# undef write
38# undef send
39# undef recv
40# undef stat
41# undef fstat
42# define lstat stat
43# undef truncate
44# undef ftruncate
45# undef open
46# undef close
47# undef unlink
48# undef rmdir
49# undef rename
50# undef lseek
51
52# define chown(a,b,c) (errno = ENOSYS, -1)
53# define fchown(a,b,c) (errno = ENOSYS, -1)
54# define fchmod(a,b) (errno = ENOSYS, -1)
55# define symlink(a,b) (errno = ENOSYS, -1)
56# define readlink(a,b,c) (errno = ENOSYS, -1)
57# define mknod(a,b,c) (errno = ENOSYS, -1)
58# define truncate(a,b) (errno = ENOSYS, -1)
59# define ftruncate(fd,o) chsize ((fd), (o))
60# define fsync(fd) _commit (fd)
61# define opendir(fd) (errno = ENOSYS, 0)
62# define readdir(fd) (errno = ENOSYS, -1)
63# define closedir(fd) (errno = ENOSYS, -1)
64# define mkdir(a,b) mkdir (a)
65
26#else 66#else
27# define STACKSIZE 4096 67
68# include <sys/time.h>
69# include <sys/select.h>
70# include <unistd.h>
71# include <utime.h>
72# include <signal.h>
73# define EIO_STRUCT_DIRENT struct dirent
74
75#endif
76
77/* perl stupidly overrides readdir and maybe others */
78/* with thread-unsafe versions, imagine that :( */
79#undef readdir
80#undef opendir
81#undef closedir
82
83#define EIO_STRUCT_STAT Stat_t
84
85/* use NV for 32 bit perls as it allows larger offsets */
86#if IVSIZE >= 8
87# define VAL64 IV
88# define SvVAL64 SvIV
89# define newSVval64 newSViv
90#else
91# define VAL64 NV
92# define SvVAL64 SvNV
93# define newSVval64 newSVnv
94#endif
95
96/*****************************************************************************/
97
98#if __GNUC__ >= 3
99# define expect(expr,value) __builtin_expect ((expr),(value))
100#else
101# define expect(expr,value) (expr)
102#endif
103
104#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1)
106
107/*****************************************************************************/
108
109typedef SV SV8; /* byte-sv, used for argument-checking */
110typedef int aio_rfd; /* read file desriptor */
111typedef int aio_wfd; /* write file descriptor */
112
113static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
114
115#define EIO_REQ_MEMBERS \
116 SV *callback; \
117 SV *sv1, *sv2; \
118 STRLEN stroffset; \
119 SV *self;
120
121#define EIO_NO_WRAPPERS 1
122
123#include "libeio/config.h"
124#include "libeio/eio.h"
125
126#ifndef POSIX_FADV_NORMAL
127# define POSIX_FADV_NORMAL 0
128#endif
129#ifndef POSIX_FADV_SEQUENTIAL
130# define POSIX_FADV_SEQUENTIAL 0
131#endif
132#ifndef POSIX_FADV_RANDOM
133# define POSIX_FADV_RANDOM 0
134#endif
135#ifndef POSIX_FADV_NOREUSE
136# define POSIX_FADV_NOREUSE 0
137#endif
138#ifndef POSIX_FADV_WILLNEED
139# define POSIX_FADV_WILLNEED 0
140#endif
141#ifndef POSIX_FADV_DONTNEED
142# define POSIX_FADV_DONTNEED 0
143#endif
144
145#if !HAVE_POSIX_FADVISE
146# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
147#endif
148
149#ifndef POSIX_MADV_NORMAL
150# define POSIX_MADV_NORMAL 0
151#endif
152#ifndef POSIX_MADV_SEQUENTIAL
153# define POSIX_MADV_SEQUENTIAL 0
154#endif
155#ifndef POSIX_MADV_RANDOM
156# define POSIX_MADV_RANDOM 0
157#endif
158#ifndef POSIX_MADV_WILLNEED
159# define POSIX_MADV_WILLNEED 0
160#endif
161#ifndef POSIX_MADV_DONTNEED
162# define POSIX_MADV_DONTNEED 0
163#endif
164
165#if !HAVE_POSIX_MADVISE
166# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
167#endif
168
169#ifndef PROT_NONE
170# define PROT_NONE 0
171#endif
172#ifndef PROT_READ
173# define PROT_READ 0
174#endif
175#ifndef PROT_WRITE
176# define PROT_READ 0
177#endif
178#ifndef PROT_EXEC
179# define PROT_EXEC 0
180#endif
181
182#ifndef ST_NODEV
183# define ST_NODEV 0
184#endif
185#ifndef ST_NOEXEC
186# define ST_NOEXEC 0
187#endif
188#ifndef ST_SYNCHRONOUS
189# define ST_SYNCHRONOUS 0
190#endif
191#ifndef ST_MANDLOCK
192# define ST_MANDLOCK 0
193#endif
194#ifndef ST_WRITE
195# define ST_WRITE 0
196#endif
197#ifndef ST_APPEND
198# define ST_APPEND 0
199#endif
200#ifndef ST_IMMUTABLE
201# define ST_IMMUTABLE 0
202#endif
203#ifndef ST_NOATIME
204# define ST_NOATIME 0
205#endif
206#ifndef ST_NODIRATIME
207# define ST_NODIRATIME 0
208#endif
209#ifndef ST_RELATIME
210# define ST_RELATIME 0
211#endif
212
213#ifndef S_IFIFO
214# define S_IFIFO 0
215#endif
216#ifndef S_IFCHR
217# define S_IFCHR 0
218#endif
219#ifndef S_IFBLK
220# define S_IFBLK 0
221#endif
222#ifndef S_IFLNK
223# define S_IFLNK 0
224#endif
225#ifndef S_IFREG
226# define S_IFREG 0
227#endif
228#ifndef S_IFDIR
229# define S_IFDIR 0
230#endif
231#ifndef S_IFWHT
232# define S_IFWHT 0
233#endif
234#ifndef S_IFSOCK
235# define S_IFSOCK 0
236#endif
237
238#ifndef MAP_ANONYMOUS
239# ifdef MAP_ANON
240# define MAP_ANONYMOUS MAP_ANON
241# else
242# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
28#endif 243# endif
244#endif
245#ifndef MAP_HUGETLB
246# define MAP_HUGETLB 0
247#endif
248#ifndef MAP_LOCKED
249# define MAP_LOCKED 0
250#endif
251#ifndef MAP_NORESERVE
252# define MAP_NORESERVE 0
253#endif
254#ifndef MAP_POPULATE
255# define MAP_POPULATE 0
256#endif
257#ifndef MAP_NONBLOCK
258# define MAP_NONBLOCK 0
259#endif
260
261#ifndef makedev
262# define makedev(maj,min) (((maj) << 8) | (min))
263#endif
264#ifndef major
265# define major(dev) ((dev) >> 8)
266#endif
267#ifndef minor
268# define minor(dev) ((dev) & 0xff)
269#endif
270
271#ifndef PAGESIZE
272# define PAGESIZE sysconf (_SC_PAGESIZE)
273#endif
274
275static int req_invoke (eio_req *req);
276#define EIO_FINISH(req) req_invoke (req)
277static void req_destroy (eio_req *grp);
278#define EIO_DESTROY(req) req_destroy (req)
29 279
30enum { 280enum {
31 REQ_QUIT, 281 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
32 REQ_OPEN, REQ_CLOSE,
33 REQ_READ, REQ_WRITE, REQ_READAHEAD,
34 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35 REQ_FSYNC, REQ_FDATASYNC,
36 REQ_UNLINK, REQ_RMDIR,
37 REQ_SYMLINK,
38}; 282};
39 283
40typedef struct aio_cb { 284#include "libeio/eio.c"
41 struct aio_cb *volatile next;
42 285
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, *data2ptr;
53 STRLEN dataoffset;
54
55 Stat_t *statdata;
56} aio_cb;
57
58typedef aio_cb *aio_req; 286typedef eio_req *aio_req;
287typedef eio_req *aio_req_ornot;
59 288
60static int started; 289static SV *on_next_submit;
61static volatile int nreqs; 290static int next_pri = EIO_PRI_DEFAULT;
62static int max_outstanding = 1<<30; 291static int max_outstanding;
63static int respipe [2];
64 292
65static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 293static s_epipe respipe;
66static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
67static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68 294
69static volatile aio_req reqs, reqe; /* queue start, queue end */ 295static void req_destroy (aio_req req);
70static volatile aio_req ress, rese; /* queue start, queue end */
71
72static void free_req (aio_req req) 296static void req_cancel (aio_req req);
73{
74 if (req->data)
75 SvREFCNT_dec (req->data);
76 297
298static void want_poll (void)
299{
300 /* write a dummy byte to the pipe so fh becomes ready */
301 s_epipe_signal (&respipe);
302}
303
304static void done_poll (void)
305{
306 /* read any signals sent by the worker threads */
307 s_epipe_drain (&respipe);
308}
309
310/* must be called at most once */
311static SV *req_sv (aio_req req, HV *stash)
312{
77 if (req->fh) 313 if (!req->self)
78 SvREFCNT_dec (req->fh);
79
80 if (req->statdata)
81 Safefree (req->statdata);
82
83 if (req->callback)
84 SvREFCNT_dec (req->callback);
85
86 Safefree (req);
87}
88
89static void
90poll_wait ()
91{
92 if (nreqs && !ress)
93 { 314 {
94 fd_set rfd; 315 req->self = (SV *)newHV ();
95 FD_ZERO(&rfd); 316 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
96 FD_SET(respipe [0], &rfd);
97
98 select (respipe [0] + 1, &rfd, 0, 0, 0);
99 } 317 }
100}
101 318
102static int 319 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
103poll_cb () 320}
104{
105 dSP;
106 int count = 0;
107 int do_croak = 0;
108 aio_req req;
109 321
110 for (;;) 322static aio_req SvAIO_REQ (SV *sv)
323{
324 MAGIC *mg;
325
326 if (!SvROK (sv)
327 || (SvSTASH (SvRV (sv)) != aio_grp_stash
328 && SvSTASH (SvRV (sv)) != aio_req_stash
329 && !sv_derived_from (sv, "IO::AIO::REQ")))
330 croak ("object of class IO::AIO::REQ expected");
331
332 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
333
334 return mg ? (aio_req)mg->mg_ptr : 0;
335}
336
337static void aio_grp_feed (aio_req grp)
338{
339 if (grp->sv2 && SvOK (grp->sv2))
111 { 340 {
112 pthread_mutex_lock (&reslock); 341 dSP;
113 req = ress;
114 342
115 if (req) 343 ENTER;
344 SAVETMPS;
345 PUSHMARK (SP);
346 XPUSHs (req_sv (grp, aio_grp_stash));
347 PUTBACK;
348 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
349 SPAGAIN;
350 FREETMPS;
351 LEAVE;
352 }
353}
354
355static void req_submit (eio_req *req)
356{
357 eio_submit (req);
358
359 if (expect_false (on_next_submit))
360 {
361 dSP;
362 SV *cb = sv_2mortal (on_next_submit);
363
364 on_next_submit = 0;
365
366 PUSHMARK (SP);
367 PUTBACK;
368 call_sv (cb, G_DISCARD | G_EVAL);
369 }
370}
371
372static int req_invoke (eio_req *req)
373{
374 if (req->flags & FLAG_SV2_RO_OFF)
375 SvREADONLY_off (req->sv2);
376
377 if (!EIO_CANCELLED (req) && req->callback)
378 {
379 dSP;
380 static SV *sv_result_cache; /* caches the result integer SV */
381 SV *sv_result;
382
383 ENTER;
384 SAVETMPS;
385 PUSHMARK (SP);
386 EXTEND (SP, 1);
387
388 /* do not recreate the result IV from scratch each time */
389 if (expect_true (sv_result_cache))
116 { 390 {
117 ress = req->next; 391 sv_result = sv_result_cache; sv_result_cache = 0;
118 392 SvIV_set (sv_result, req->result);
119 if (!ress) 393 SvIOK_only (sv_result);
120 {
121 rese = 0;
122
123 /* read any signals sent by the worker threads */
124 char buf [32];
125 while (read (respipe [0], buf, 32) == 32)
126 ;
127 }
128 }
129
130 pthread_mutex_unlock (&reslock);
131
132 if (!req)
133 break;
134
135 nreqs--;
136
137 if (req->type == REQ_QUIT)
138 started--;
139 else
140 {
141 int errorno = errno;
142 errno = req->errorno;
143
144 if (req->type == REQ_READ)
145 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
146
147 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
148 SvREADONLY_off (req->data);
149
150 if (req->statdata)
151 {
152 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
153 PL_laststatval = req->result;
154 PL_statcache = *(req->statdata);
155 }
156
157 ENTER;
158 PUSHMARK (SP);
159 XPUSHs (sv_2mortal (newSViv (req->result)));
160
161 if (req->type == REQ_OPEN)
162 {
163 /* convert fd to fh */
164 SV *fh;
165
166 PUTBACK;
167 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
168 SPAGAIN;
169
170 fh = SvREFCNT_inc (POPs);
171
172 PUSHMARK (SP);
173 XPUSHs (sv_2mortal (fh));
174 }
175
176 if (SvOK (req->callback))
177 {
178 PUTBACK;
179 call_sv (req->callback, G_VOID | G_EVAL);
180 SPAGAIN;
181
182 if (SvTRUE (ERRSV))
183 {
184 free_req (req);
185 croak (0);
186 }
187 }
188
189 LEAVE;
190
191 errno = errorno;
192 count++;
193 }
194
195 free_req (req);
196 }
197
198 return count;
199}
200
201static void *aio_proc(void *arg);
202
203static void
204start_thread (void)
205{
206 sigset_t fullsigset, oldsigset;
207 pthread_t tid;
208 pthread_attr_t attr;
209
210 pthread_attr_init (&attr);
211 pthread_attr_setstacksize (&attr, STACKSIZE);
212 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
213
214 sigfillset (&fullsigset);
215 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
216
217 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
218 started++;
219
220 sigprocmask (SIG_SETMASK, &oldsigset, 0);
221}
222
223static void
224send_req (aio_req req)
225{
226 nreqs++;
227
228 pthread_mutex_lock (&reqlock);
229
230 req->next = 0;
231
232 if (reqe)
233 {
234 reqe->next = req;
235 reqe = req;
236 }
237 else
238 reqe = reqs = req;
239
240 pthread_cond_signal (&reqwait);
241 pthread_mutex_unlock (&reqlock);
242
243 if (nreqs > max_outstanding)
244 for (;;)
245 {
246 poll_cb ();
247
248 if (nreqs <= max_outstanding)
249 break;
250
251 poll_wait ();
252 }
253}
254
255static void
256end_thread (void)
257{
258 aio_req req;
259 Newz (0, req, 1, aio_cb);
260 req->type = REQ_QUIT;
261
262 send_req (req);
263}
264
265static void min_parallel (int nthreads)
266{
267 while (nthreads > started)
268 start_thread ();
269}
270
271static void max_parallel (int nthreads)
272{
273 int cur = started;
274
275 while (cur > nthreads)
276 {
277 end_thread ();
278 cur--;
279 }
280
281 while (started > nthreads)
282 {
283 poll_wait ();
284 poll_cb ();
285 }
286}
287
288static void create_pipe ()
289{
290 if (pipe (respipe))
291 croak ("unable to initialize result pipe");
292
293 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
294 croak ("cannot set result pipe to nonblocking mode");
295
296 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
297 croak ("cannot set result pipe to nonblocking mode");
298}
299
300static void atfork_prepare (void)
301{
302 pthread_mutex_lock (&reqlock);
303 pthread_mutex_lock (&reslock);
304}
305
306static void atfork_parent (void)
307{
308 pthread_mutex_unlock (&reslock);
309 pthread_mutex_unlock (&reqlock);
310}
311
312static void atfork_child (void)
313{
314 aio_req prv;
315
316 int restart = started;
317 started = 0;
318
319 while (reqs)
320 {
321 prv = reqs;
322 reqs = prv->next;
323 free_req (prv);
324 }
325
326 reqs = reqe = 0;
327
328 while (ress)
329 {
330 prv = ress;
331 ress = prv->next;
332 free_req (prv);
333 }
334
335 ress = rese = 0;
336
337 close (respipe [0]);
338 close (respipe [1]);
339 create_pipe ();
340
341 atfork_parent ();
342
343 min_parallel (restart);
344}
345
346/*****************************************************************************/
347/* work around various missing functions */
348
349#if !HAVE_PREADWRITE
350# define pread aio_pread
351# define pwrite aio_pwrite
352
353/*
354 * make our pread/pwrite safe against themselves, but not against
355 * normal read/write by using a mutex. slows down execution a lot,
356 * but that's your problem, not mine.
357 */
358static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
359
360static ssize_t
361pread (int fd, void *buf, size_t count, off_t offset)
362{
363 ssize_t res;
364 off_t ooffset;
365
366 pthread_mutex_lock (&iolock);
367 ooffset = lseek (fd, 0, SEEK_CUR);
368 lseek (fd, offset, SEEK_SET);
369 res = read (fd, buf, count);
370 lseek (fd, ooffset, SEEK_SET);
371 pthread_mutex_unlock (&iolock);
372
373 return res;
374}
375
376static ssize_t
377pwrite (int fd, void *buf, size_t count, off_t offset)
378{
379 ssize_t res;
380 off_t ooffset;
381
382 pthread_mutex_lock (&iolock);
383 ooffset = lseek (fd, 0, SEEK_CUR);
384 lseek (fd, offset, SEEK_SET);
385 res = write (fd, buf, count);
386 lseek (fd, offset, SEEK_SET);
387 pthread_mutex_unlock (&iolock);
388
389 return res;
390}
391#endif
392
393#if !HAVE_FDATASYNC
394# define fdatasync fsync
395#endif
396
397#if !HAVE_READAHEAD
398# define readahead aio_readahead
399
400static char readahead_buf[4096];
401
402static ssize_t
403readahead (int fd, off_t offset, size_t count)
404{
405 while (count > 0)
406 {
407 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
408
409 pread (fd, readahead_buf, len, offset);
410 offset += len;
411 count -= len;
412 }
413
414 errno = 0;
415}
416#endif
417
418/*****************************************************************************/
419
420static void *
421aio_proc (void *thr_arg)
422{
423 aio_req req;
424 int type;
425
426 do
427 {
428 pthread_mutex_lock (&reqlock);
429
430 for (;;)
431 {
432 req = reqs;
433
434 if (reqs)
435 {
436 reqs = reqs->next;
437 if (!reqs) reqe = 0;
438 }
439
440 if (req)
441 break;
442
443 pthread_cond_wait (&reqwait, &reqlock);
444 }
445
446 pthread_mutex_unlock (&reqlock);
447
448 errno = 0; /* strictly unnecessary */
449
450 type = req->type;
451
452 switch (type)
453 {
454 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
455 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
456
457 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
458
459 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
460 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
461 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
462
463 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
464 case REQ_CLOSE: req->result = close (req->fd); break;
465 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
466 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
467 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
468
469 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
470 case REQ_FSYNC: req->result = fsync (req->fd); break;
471
472 case REQ_QUIT:
473 break;
474
475 default:
476 req->result = ENOSYS;
477 break;
478 }
479
480 req->errorno = errno;
481
482 pthread_mutex_lock (&reslock);
483
484 req->next = 0;
485
486 if (rese)
487 {
488 rese->next = req;
489 rese = req;
490 } 394 }
491 else 395 else
492 { 396 {
493 rese = ress = req; 397 sv_result = newSViv (req->result);
494 398 SvREADONLY_on (sv_result);
495 /* write a dummy byte to the pipe so fh becomes ready */
496 write (respipe [1], &respipe, 1);
497 } 399 }
498 400
499 pthread_mutex_unlock (&reslock); 401 switch (req->type)
402 {
403 case EIO_READDIR:
404 {
405 SV *rv = &PL_sv_undef;
406
407 if (req->result >= 0)
408 {
409 int i;
410 char *names = (char *)req->ptr2;
411 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
412 AV *av = newAV ();
413
414 av_extend (av, req->result - 1);
415
416 for (i = 0; i < req->result; ++i)
417 {
418 if (req->int1 & EIO_READDIR_DENTS)
419 {
420 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
421
422 if (req->int1 & EIO_READDIR_CUSTOM2)
423 {
424 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
425 AV *avent = newAV ();
426
427 av_extend (avent, 2);
428
429 if (!sv_type [ent->type])
430 {
431 sv_type [ent->type] = newSViv (ent->type);
432 SvREADONLY_on (sv_type [ent->type]);
433 }
434
435 av_store (avent, 0, namesv);
436 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
437 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
438
439 av_store (av, i, newRV_noinc ((SV *)avent));
440 }
441 else
442 av_store (av, i, namesv);
443
444 ++ent;
445 }
446 else
447 {
448 SV *name = newSVpv (names, 0);
449 av_store (av, i, name);
450 names += SvCUR (name) + 1;
451 }
452 }
453
454 rv = sv_2mortal (newRV_noinc ((SV *)av));
455 }
456
457 PUSHs (rv);
458
459 if (req->int1 & EIO_READDIR_CUSTOM1)
460 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
461 }
462 break;
463
464 case EIO_OPEN:
465 {
466 /* convert fd to fh */
467 SV *fh = &PL_sv_undef;
468
469 if (req->result >= 0)
470 {
471 GV *gv = (GV *)sv_newmortal ();
472 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
473 char sym [64];
474 int symlen;
475
476 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
477 gv_init (gv, aio_stash, sym, symlen, 0);
478
479 symlen = snprintf (
480 sym,
481 sizeof (sym),
482 "%s&=%d",
483 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
484 (int)req->result
485 );
486
487 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
488 fh = (SV *)gv;
489 }
490
491 PUSHs (fh);
492 }
493 break;
494
495 case EIO_STATVFS:
496 case EIO_FSTATVFS:
497 {
498 SV *rv = &PL_sv_undef;
499
500 if (req->result >= 0)
501 {
502 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
503 HV *hv = newHV ();
504
505 rv = sv_2mortal (newRV_noinc ((SV *)hv));
506
507 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
508 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
509 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
510 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
511 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
512 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
513 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
514 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
515 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
516 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
517 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
518 }
519
520 PUSHs (rv);
521 }
522
523 break;
524
525 case EIO_GROUP:
526 req->int1 = 2; /* mark group as finished */
527
528 if (req->sv1)
529 {
530 int i;
531 AV *av = (AV *)req->sv1;
532
533 EXTEND (SP, AvFILL (av) + 1);
534 for (i = 0; i <= AvFILL (av); ++i)
535 PUSHs (*av_fetch (av, i, 0));
536 }
537 break;
538
539 case EIO_NOP:
540 case EIO_BUSY:
541 break;
542
543 case EIO_READLINK:
544 if (req->result > 0)
545 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
546 break;
547
548 case EIO_STAT:
549 case EIO_LSTAT:
550 case EIO_FSTAT:
551 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
552 PL_laststatval = req->result;
553 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
554 PUSHs (sv_result);
555 break;
556
557 case EIO_READ:
558 {
559 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
560 *SvEND (req->sv2) = 0;
561 SvPOK_only (req->sv2);
562 SvSETMAGIC (req->sv2);
563 PUSHs (sv_result);
564 }
565 break;
566
567 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
568 if (req->result > 0)
569 SvIV_set (sv_result, 0);
570 /* FALLTHROUGH */
571
572 default:
573 PUSHs (sv_result);
574 break;
575 }
576
577 errno = req->errorno;
578
579 PUTBACK;
580 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
581 SPAGAIN;
582
583 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
584 SvREFCNT_dec (sv_result);
585 else
586 sv_result_cache = sv_result;
587
588 FREETMPS;
589 LEAVE;
590
591 PUTBACK;
500 } 592 }
501 while (type != REQ_QUIT); 593
594 return !!SvTRUE (ERRSV);
595}
596
597static void req_destroy (aio_req req)
598{
599 if (req->self)
600 {
601 sv_unmagic (req->self, PERL_MAGIC_ext);
602 SvREFCNT_dec (req->self);
603 }
604
605 SvREFCNT_dec (req->sv1);
606 SvREFCNT_dec (req->sv2);
607 SvREFCNT_dec (req->callback);
608
609 Safefree (req);
610}
611
612static void req_cancel_subs (aio_req grp)
613{
614 aio_req sub;
615
616 if (grp->type != EIO_GROUP)
617 return;
618
619 SvREFCNT_dec (grp->sv2);
620 grp->sv2 = 0;
621
622 eio_grp_cancel (grp);
623}
624
625static void
626create_respipe (void)
627{
628 if (s_epipe_renew (&respipe))
629 croak ("IO::AIO: unable to initialize result pipe");
630}
631
632static void poll_wait (void)
633{
634 while (eio_nreqs ())
635 {
636 int size;
637
638 X_LOCK (reslock);
639 size = res_queue.size;
640 X_UNLOCK (reslock);
641
642 if (size)
643 return;
644
645 etp_maybe_start_thread ();
646
647 s_epipe_wait (&respipe);
648 }
649}
650
651static int poll_cb (void)
652{
653 for (;;)
654 {
655 int res = eio_poll ();
656
657 if (res > 0)
658 croak (0);
659
660 if (!max_outstanding || max_outstanding > eio_nreqs ())
661 return res;
662
663 poll_wait ();
664 }
665}
666
667static void atfork_child (void)
668{
669 create_respipe ();
670}
671
672/*****************************************************************************/
673
674#if !_POSIX_MAPPED_FILES
675# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
676# define munmap(addr,length) (errno = ENOSYS, -1)
677#endif
678
679#if !_POSIX_MEMORY_PROTECTION
680# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
681# define PROT_NONE 0
682# define PROT_WRITE 0
683# define MAP_PRIVATE 0
684# define MAP_SHARED 0
685# define MAP_FIXED 0
686#endif
687
688#define MMAP_MAGIC PERL_MAGIC_ext
689
690static int
691mmap_free (pTHX_ SV *sv, MAGIC *mg)
692{
693 int old_errno = errno;
694 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
695 errno = old_errno;
696
697 mg->mg_obj = 0; /* just in case */
698
699 SvREADONLY_off (sv);
700
701 if (SvPVX (sv) != mg->mg_ptr)
702 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
703
704 SvCUR_set (sv, 0);
705 SvPVX (sv) = 0;
706 SvOK_off (sv);
502 707
503 return 0; 708 return 0;
504} 709}
505 710
711static MGVTBL mmap_vtbl = {
712 0, 0, 0, 0, mmap_free
713};
714
715/*****************************************************************************/
716
717static SV *
718get_cb (SV *cb_sv)
719{
720 SvGETMAGIC (cb_sv);
721 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
722}
723
506#define dREQ \ 724#define dREQ \
725 SV *cb_cv; \
507 aio_req req; \ 726 aio_req req; \
727 int req_pri = next_pri; \
728 next_pri = EIO_PRI_DEFAULT; \
508 \ 729 \
509 if (SvOK (callback) && !SvROK (callback)) \ 730 cb_cv = get_cb (callback); \
510 croak ("clalback must be undef or of reference type"); \
511 \ 731 \
512 Newz (0, req, 1, aio_cb); \ 732 Newz (0, req, 1, eio_req); \
513 if (!req) \ 733 if (!req) \
514 croak ("out of memory during aio_req allocation"); \ 734 croak ("out of memory during eio_req allocation"); \
515 \ 735 \
516 req->callback = newSVsv (callback); 736 req->callback = SvREFCNT_inc (cb_cv); \
517 737 req->pri = req_pri
738
739#define REQ_SEND \
740 PUTBACK; \
741 req_submit (req); \
742 SPAGAIN; \
743 \
744 if (GIMME_V != G_VOID) \
745 XPUSHs (req_sv (req, aio_req_stash));
746
518MODULE = IO::AIO PACKAGE = IO::AIO 747MODULE = IO::AIO PACKAGE = IO::AIO
519 748
520PROTOTYPES: ENABLE 749PROTOTYPES: ENABLE
521 750
522BOOT: 751BOOT:
523{ 752{
753 static const struct {
754 const char *name;
755 IV iv;
756 } *civ, const_iv[] = {
757# define const_niv(name, value) { # name, (IV) value },
758# define const_iv(name) { # name, (IV) name },
759# define const_eio(name) { # name, (IV) EIO_ ## name },
760 const_iv (EXDEV)
761 const_iv (ENOSYS)
762 const_iv (O_RDONLY)
763 const_iv (O_WRONLY)
764 const_iv (O_RDWR)
765 const_iv (O_CREAT)
766 const_iv (O_TRUNC)
767 const_iv (O_EXCL)
768 const_iv (O_APPEND)
769
770 const_iv (S_IFIFO)
771 const_iv (S_IFCHR)
772 const_iv (S_IFBLK)
773 const_iv (S_IFLNK)
774 const_iv (S_IFREG)
775 const_iv (S_IFDIR)
776 const_iv (S_IFWHT)
777 const_iv (S_IFSOCK)
778 const_iv (S_IFMT)
779
780 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
781 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
782 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
783 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
784 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
785 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
786
787 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
788 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
789 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
790 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
791 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
792
793 const_iv (ST_RDONLY)
794 const_iv (ST_NOSUID)
795 const_iv (ST_NODEV)
796 const_iv (ST_NOEXEC)
797 const_iv (ST_SYNCHRONOUS)
798 const_iv (ST_MANDLOCK)
799 const_iv (ST_WRITE)
800 const_iv (ST_APPEND)
801 const_iv (ST_IMMUTABLE)
802 const_iv (ST_NOATIME)
803 const_iv (ST_NODIRATIME)
804 const_iv (ST_RELATIME)
805
806 const_iv (PROT_NONE)
807 const_iv (PROT_EXEC)
808 const_iv (PROT_READ)
809 const_iv (PROT_WRITE)
810
811 /*const_iv (MAP_FIXED)*/
812 const_iv (MAP_PRIVATE)
813 const_iv (MAP_SHARED)
814 const_iv (MAP_ANONYMOUS)
815
816 /* linuxish */
817 const_iv (MAP_HUGETLB)
818 const_iv (MAP_LOCKED)
819 const_iv (MAP_NORESERVE)
820 const_iv (MAP_POPULATE)
821 const_iv (MAP_NONBLOCK)
822
823 const_eio (MCL_FUTURE)
824 const_eio (MCL_CURRENT)
825
826 const_eio (MS_ASYNC)
827 const_eio (MS_INVALIDATE)
828 const_eio (MS_SYNC)
829
830 const_eio (MT_MODIFY)
831
832 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
833 const_eio (SYNC_FILE_RANGE_WRITE)
834 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
835
836 const_eio (READDIR_DENTS)
837 const_eio (READDIR_DIRS_FIRST)
838 const_eio (READDIR_STAT_ORDER)
839 const_eio (READDIR_FOUND_UNKNOWN)
840
841 const_eio (DT_UNKNOWN)
842 const_eio (DT_FIFO)
843 const_eio (DT_CHR)
844 const_eio (DT_DIR)
845 const_eio (DT_BLK)
846 const_eio (DT_REG)
847 const_eio (DT_LNK)
848 const_eio (DT_SOCK)
849 const_eio (DT_WHT)
850 };
851
852 aio_stash = gv_stashpv ("IO::AIO" , 1);
853 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
854 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
855
856 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
857 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
858
859 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
860
524 create_pipe (); 861 create_respipe ();
525 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
526}
527 862
863 if (eio_init (want_poll, done_poll) < 0)
864 croak ("IO::AIO: unable to initialise eio library");
865
866 /* atfork child called in fifo order, so before eio's handler */
867 X_THREAD_ATFORK (0, 0, atfork_child);
868}
869
528void 870void
529min_parallel(nthreads) 871max_poll_reqs (int nreqs)
530 int nthreads
531 PROTOTYPE: $ 872 PROTOTYPE: $
873 CODE:
874 eio_set_max_poll_reqs (nreqs);
532 875
533void 876void
534max_parallel(nthreads) 877max_poll_time (double nseconds)
535 int nthreads
536 PROTOTYPE: $ 878 PROTOTYPE: $
537
538int
539max_outstanding(nreqs)
540 int nreqs
541 PROTOTYPE: $
542 CODE: 879 CODE:
543 RETVAL = max_outstanding; 880 eio_set_max_poll_time (nseconds);
881
882void
883min_parallel (int nthreads)
884 PROTOTYPE: $
885 CODE:
886 eio_set_min_parallel (nthreads);
887
888void
889max_parallel (int nthreads)
890 PROTOTYPE: $
891 CODE:
892 eio_set_max_parallel (nthreads);
893
894void
895max_idle (int nthreads)
896 PROTOTYPE: $
897 CODE:
898 eio_set_max_idle (nthreads);
899
900void
901max_outstanding (int maxreqs)
902 PROTOTYPE: $
903 CODE:
544 max_outstanding = nreqs; 904 max_outstanding = maxreqs;
545 905
546void 906void
547aio_open(pathname,flags,mode,callback=&PL_sv_undef) 907aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
548 SV * pathname
549 int flags
550 int mode
551 SV * callback
552 PROTOTYPE: $$$;$
553 CODE: 908 PPCODE:
554{ 909{
555 dREQ; 910 dREQ;
556 911
557 req->type = REQ_OPEN; 912 req->type = EIO_OPEN;
558 req->data = newSVsv (pathname); 913 req->sv1 = newSVsv (pathname);
559 req->dataptr = SvPVbyte_nolen (req->data); 914 req->ptr1 = SvPVbyte_nolen (req->sv1);
560 req->fd = flags; 915 req->int1 = flags;
561 req->mode = mode; 916 req->int2 = mode;
562 917
563 send_req (req); 918 REQ_SEND;
564} 919}
565 920
566void 921void
567aio_close(fh,callback=&PL_sv_undef) 922aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
568 SV * fh
569 SV * callback
570 PROTOTYPE: $;$
571 ALIAS: 923 ALIAS:
572 aio_close = REQ_CLOSE
573 aio_fsync = REQ_FSYNC 924 aio_fsync = EIO_FSYNC
574 aio_fdatasync = REQ_FDATASYNC 925 aio_fdatasync = EIO_FDATASYNC
575 CODE: 926 PPCODE:
576{ 927{
928 int fd = s_fileno_croak (fh, 0);
577 dREQ; 929 dREQ;
578 930
579 req->type = ix; 931 req->type = ix;
580 req->fh = newSVsv (fh); 932 req->sv1 = newSVsv (fh);
581 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 933 req->int1 = fd;
582 934
583 send_req (req); 935 REQ_SEND (req);
584} 936}
585 937
586void 938void
939aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
940 PPCODE:
941{
942 int fd = s_fileno_croak (fh, 0);
943 dREQ;
944
945 req->type = EIO_SYNC_FILE_RANGE;
946 req->sv1 = newSVsv (fh);
947 req->int1 = fd;
948 req->offs = offset;
949 req->size = nbytes;
950 req->int2 = flags;
951
952 REQ_SEND (req);
953}
954
955void
956aio_close (SV *fh, SV *callback=&PL_sv_undef)
957 PPCODE:
958{
959 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
960 int fd = s_fileno_croak (fh, 0);
961 dREQ;
962
963 if (close_pipe < 0)
964 {
965 int pipefd [2];
966
967 if (pipe (pipefd) < 0
968 || close (pipefd [1]) < 0
969 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
970 abort (); /*D*/
971
972 close_pipe = pipefd [0];
973 }
974
975 req->type = EIO_DUP2;
976 req->int1 = close_pipe;
977 req->sv2 = newSVsv (fh);
978 req->int2 = fd;
979
980 REQ_SEND (req);
981}
982
983void
587aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 984aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
588 SV * fh
589 UV offset
590 IV length
591 SV * data
592 IV dataoffset
593 SV * callback
594 ALIAS: 985 ALIAS:
595 aio_read = REQ_READ 986 aio_read = EIO_READ
596 aio_write = REQ_WRITE 987 aio_write = EIO_WRITE
597 PROTOTYPE: $$$$$;$
598 CODE: 988 PPCODE:
599{ 989{
600 aio_req req;
601 STRLEN svlen; 990 STRLEN svlen;
991 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
602 char *svptr = SvPVbyte (data, svlen); 992 char *svptr = SvPVbyte (data, svlen);
603 993 UV len = SvUV (length);
604 SvUPGRADE (data, SVt_PV);
605 SvPOK_on (data);
606 994
607 if (dataoffset < 0) 995 if (dataoffset < 0)
608 dataoffset += svlen; 996 dataoffset += svlen;
609 997
610 if (dataoffset < 0 || dataoffset > svlen) 998 if (dataoffset < 0 || dataoffset > svlen)
611 croak ("data offset outside of string"); 999 croak ("dataoffset outside of data scalar");
612 1000
613 if (ix == REQ_WRITE) 1001 if (ix == EIO_WRITE)
614 { 1002 {
615 /* write: check length and adjust. */ 1003 /* write: check length and adjust. */
616 if (length < 0 || length + dataoffset > svlen) 1004 if (!SvOK (length) || len + dataoffset > svlen)
617 length = svlen - dataoffset; 1005 len = svlen - dataoffset;
618 } 1006 }
619 else 1007 else
620 { 1008 {
621 /* read: grow scalar as necessary */ 1009 /* read: check type and grow scalar as necessary */
1010 SvUPGRADE (data, SVt_PV);
622 svptr = SvGROW (data, length + dataoffset); 1011 svptr = SvGROW (data, len + dataoffset + 1);
623 } 1012 }
624
625 if (length < 0)
626 croak ("length must not be negative");
627 1013
628 { 1014 {
629 dREQ; 1015 dREQ;
630 1016
631 req->type = ix; 1017 req->type = ix;
632 req->fh = newSVsv (fh); 1018 req->sv1 = newSVsv (fh);
633 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1019 req->int1 = fd;
634 : IoOFP (sv_2io (fh))); 1020 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
635 req->offset = offset; 1021 req->size = len;
636 req->length = length;
637 req->data = SvREFCNT_inc (data); 1022 req->sv2 = SvREFCNT_inc (data);
638 req->dataptr = (char *)svptr + dataoffset; 1023 req->ptr2 = (char *)svptr + dataoffset;
1024 req->stroffset = dataoffset;
639 1025
640 if (!SvREADONLY (data)) 1026 if (!SvREADONLY (data))
641 { 1027 {
642 SvREADONLY_on (data); 1028 SvREADONLY_on (data);
643 req->data2ptr = (void *)data; 1029 req->flags |= FLAG_SV2_RO_OFF;
644 } 1030 }
645 1031
646 send_req (req); 1032 REQ_SEND;
647 } 1033 }
648} 1034}
649 1035
650void 1036void
651aio_readahead(fh,offset,length,callback=&PL_sv_undef) 1037aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
652 SV * fh
653 UV offset
654 IV length
655 SV * callback
656 PROTOTYPE: $$$;$
657 CODE: 1038 PPCODE:
658{ 1039{
1040 SV *data;
1041 dREQ;
1042
1043 req->type = EIO_READLINK;
1044 req->sv1 = newSVsv (path);
1045 req->ptr1 = SvPVbyte_nolen (req->sv1);
1046
1047 REQ_SEND;
1048}
1049
1050void
1051aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1052 PPCODE:
1053{
1054 int ifd = s_fileno_croak (in_fh , 0);
1055 int ofd = s_fileno_croak (out_fh, 1);
659 dREQ; 1056 dREQ;
660 1057
1058 req->type = EIO_SENDFILE;
1059 req->sv1 = newSVsv (out_fh);
1060 req->int1 = ofd;
1061 req->sv2 = newSVsv (in_fh);
1062 req->int2 = ifd;
1063 req->offs = in_offset;
1064 req->size = length;
1065
1066 REQ_SEND;
1067}
1068
1069void
1070aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1071 PPCODE:
1072{
1073 int fd = s_fileno_croak (fh, 0);
1074 dREQ;
1075
661 req->type = REQ_READAHEAD; 1076 req->type = EIO_READAHEAD;
662 req->fh = newSVsv (fh); 1077 req->sv1 = newSVsv (fh);
663 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1078 req->int1 = fd;
664 req->offset = offset; 1079 req->offs = offset;
665 req->length = length; 1080 req->size = length;
666 1081
667 send_req (req); 1082 REQ_SEND;
668} 1083}
669 1084
670void 1085void
671aio_stat(fh_or_path,callback=&PL_sv_undef) 1086aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
672 SV * fh_or_path
673 SV * callback
674 ALIAS: 1087 ALIAS:
675 aio_stat = REQ_STAT 1088 aio_stat = EIO_STAT
676 aio_lstat = REQ_LSTAT 1089 aio_lstat = EIO_LSTAT
1090 aio_statvfs = EIO_STATVFS
677 CODE: 1091 PPCODE:
678{ 1092{
679 dREQ; 1093 dREQ;
680 1094
681 New (0, req->statdata, 1, Stat_t); 1095 req->sv1 = newSVsv (fh_or_path);
682 if (!req->statdata)
683 {
684 free_req (req);
685 croak ("out of memory during aio_req->statdata allocation");
686 }
687 1096
688 if (SvPOK (fh_or_path)) 1097 if (SvPOK (req->sv1))
689 { 1098 {
690 req->type = ix; 1099 req->type = ix;
691 req->data = newSVsv (fh_or_path);
692 req->dataptr = SvPVbyte_nolen (req->data); 1100 req->ptr1 = SvPVbyte_nolen (req->sv1);
693 } 1101 }
694 else 1102 else
695 { 1103 {
696 req->type = REQ_FSTAT; 1104 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
697 req->fh = newSVsv (fh_or_path);
698 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1105 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
699 } 1106 }
700 1107
701 send_req (req); 1108 REQ_SEND;
702} 1109}
703 1110
1111UV
1112major (UV dev)
1113 ALIAS:
1114 minor = 1
1115 CODE:
1116 RETVAL = ix ? major (dev) : minor (dev);
1117 OUTPUT:
1118 RETVAL
1119
1120UV
1121makedev (UV maj, UV min)
1122 CODE:
1123 RETVAL = makedev (maj, min);
1124 OUTPUT:
1125 RETVAL
1126
704void 1127void
1128aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1129 PPCODE:
1130{
1131 dREQ;
1132
1133 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1134 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1135 req->sv1 = newSVsv (fh_or_path);
1136
1137 if (SvPOK (req->sv1))
1138 {
1139 req->type = EIO_UTIME;
1140 req->ptr1 = SvPVbyte_nolen (req->sv1);
1141 }
1142 else
1143 {
1144 req->type = EIO_FUTIME;
1145 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1146 }
1147
1148 REQ_SEND;
1149}
1150
1151void
1152aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1153 PPCODE:
1154{
1155 dREQ;
1156
1157 req->sv1 = newSVsv (fh_or_path);
1158 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1159
1160 if (SvPOK (req->sv1))
1161 {
1162 req->type = EIO_TRUNCATE;
1163 req->ptr1 = SvPVbyte_nolen (req->sv1);
1164 }
1165 else
1166 {
1167 req->type = EIO_FTRUNCATE;
1168 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1169 }
1170
1171 REQ_SEND;
1172}
1173
1174void
1175aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1176 ALIAS:
1177 aio_chmod = EIO_CHMOD
1178 aio_mkdir = EIO_MKDIR
1179 PPCODE:
1180{
1181 dREQ;
1182
1183 req->int2 = mode;
1184 req->sv1 = newSVsv (fh_or_path);
1185
1186 if (SvPOK (req->sv1))
1187 {
1188 req->type = ix;
1189 req->ptr1 = SvPVbyte_nolen (req->sv1);
1190 }
1191 else
1192 {
1193 req->type = EIO_FCHMOD;
1194 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1195 }
1196
1197 REQ_SEND;
1198}
1199
1200void
1201aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1202 PPCODE:
1203{
1204 dREQ;
1205
1206 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1207 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1208 req->sv1 = newSVsv (fh_or_path);
1209
1210 if (SvPOK (req->sv1))
1211 {
1212 req->type = EIO_CHOWN;
1213 req->ptr1 = SvPVbyte_nolen (req->sv1);
1214 }
1215 else
1216 {
1217 req->type = EIO_FCHOWN;
1218 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1219 }
1220
1221 REQ_SEND;
1222}
1223
1224void
1225aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1226 PPCODE:
1227{
1228 dREQ;
1229
1230 req->type = EIO_READDIR;
1231 req->sv1 = newSVsv (pathname);
1232 req->ptr1 = SvPVbyte_nolen (req->sv1);
1233 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1234
1235 if (flags & EIO_READDIR_DENTS)
1236 req->int1 |= EIO_READDIR_CUSTOM2;
1237
1238 REQ_SEND;
1239}
1240
1241void
705aio_unlink(pathname,callback=&PL_sv_undef) 1242aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
706 SV * pathname
707 SV * callback
708 ALIAS: 1243 ALIAS:
709 aio_unlink = REQ_UNLINK 1244 aio_unlink = EIO_UNLINK
710 aio_rmdir = REQ_RMDIR 1245 aio_rmdir = EIO_RMDIR
1246 aio_readdir = EIO_READDIR
711 CODE: 1247 PPCODE:
712{ 1248{
713 dREQ; 1249 dREQ;
714 1250
715 req->type = ix; 1251 req->type = ix;
716 req->data = newSVsv (pathname); 1252 req->sv1 = newSVsv (pathname);
717 req->dataptr = SvPVbyte_nolen (req->data); 1253 req->ptr1 = SvPVbyte_nolen (req->sv1);
718
719 send_req (req);
720}
721 1254
1255 REQ_SEND;
1256}
1257
722void 1258void
723aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1259aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
724 SV * oldpath 1260 ALIAS:
725 SV * newpath 1261 aio_link = EIO_LINK
726 SV * callback 1262 aio_symlink = EIO_SYMLINK
1263 aio_rename = EIO_RENAME
727 CODE: 1264 PPCODE:
728{ 1265{
729 dREQ; 1266 dREQ;
730 1267
731 req->type = REQ_SYMLINK; 1268 req->type = ix;
732 req->fh = newSVsv (oldpath); 1269 req->sv1 = newSVsv (oldpath);
733 req->data2ptr = SvPVbyte_nolen (req->fh); 1270 req->ptr1 = SvPVbyte_nolen (req->sv1);
734 req->data = newSVsv (newpath); 1271 req->sv2 = newSVsv (newpath);
735 req->dataptr = SvPVbyte_nolen (req->data); 1272 req->ptr2 = SvPVbyte_nolen (req->sv2);
736 1273
737 send_req (req); 1274 REQ_SEND;
738} 1275}
739 1276
740void 1277void
1278aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1279 PPCODE:
1280{
1281 dREQ;
1282
1283 req->type = EIO_MKNOD;
1284 req->sv1 = newSVsv (pathname);
1285 req->ptr1 = SvPVbyte_nolen (req->sv1);
1286 req->int2 = (mode_t)mode;
1287 req->offs = dev;
1288
1289 REQ_SEND;
1290}
1291
1292void
1293aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1294 ALIAS:
1295 aio_mtouch = EIO_MTOUCH
1296 aio_msync = EIO_MSYNC
1297 PPCODE:
1298{
1299 STRLEN svlen;
1300 char *svptr = SvPVbyte (data, svlen);
1301 UV len = SvUV (length);
1302
1303 if (offset < 0)
1304 offset += svlen;
1305
1306 if (offset < 0 || offset > svlen)
1307 croak ("offset outside of scalar");
1308
1309 if (!SvOK (length) || len + offset > svlen)
1310 len = svlen - offset;
1311
1312 {
1313 dREQ;
1314
1315 req->type = ix;
1316 req->sv2 = SvREFCNT_inc (data);
1317 req->ptr2 = (char *)svptr + offset;
1318 req->size = len;
1319 req->int1 = flags;
1320
1321 REQ_SEND;
1322 }
1323}
1324
1325void
1326aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1327 PPCODE:
1328{
1329 STRLEN svlen;
1330 char *svptr = SvPVbyte (data, svlen);
1331 UV len = SvUV (length);
1332
1333 if (offset < 0)
1334 offset += svlen;
1335
1336 if (offset < 0 || offset > svlen)
1337 croak ("offset outside of scalar");
1338
1339 if (!SvOK (length) || len + offset > svlen)
1340 len = svlen - offset;
1341
1342 {
1343 dREQ;
1344
1345 req->type = EIO_MLOCK;
1346 req->sv2 = SvREFCNT_inc (data);
1347 req->ptr2 = (char *)svptr + offset;
1348 req->size = len;
1349
1350 REQ_SEND;
1351 }
1352}
1353
1354void
1355aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1356 PPCODE:
1357{
1358 dREQ;
1359
1360 req->type = EIO_MLOCKALL;
1361 req->int1 = flags;
1362
1363 REQ_SEND;
1364}
1365
1366void
1367aio_busy (double delay, SV *callback=&PL_sv_undef)
1368 PPCODE:
1369{
1370 dREQ;
1371
1372 req->type = EIO_BUSY;
1373 req->nv1 = delay < 0. ? 0. : delay;
1374
1375 REQ_SEND;
1376}
1377
1378void
1379aio_group (SV *callback=&PL_sv_undef)
1380 PPCODE:
1381{
1382 dREQ;
1383
1384 req->type = EIO_GROUP;
1385
1386 req_submit (req);
1387 XPUSHs (req_sv (req, aio_grp_stash));
1388}
1389
1390void
1391aio_nop (SV *callback=&PL_sv_undef)
1392 ALIAS:
1393 aio_nop = EIO_NOP
1394 aio_sync = EIO_SYNC
1395 PPCODE:
1396{
1397 dREQ;
1398
1399 req->type = ix;
1400
1401 REQ_SEND;
1402}
1403
1404int
1405aioreq_pri (int pri = 0)
1406 CODE:
1407 RETVAL = next_pri;
1408 if (items > 0)
1409 {
1410 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1411 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1412 next_pri = pri;
1413 }
1414 OUTPUT:
1415 RETVAL
1416
1417void
1418aioreq_nice (int nice = 0)
1419 CODE:
1420 nice = next_pri - nice;
1421 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1422 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1423 next_pri = nice;
1424
1425void
741flush() 1426flush ()
742 PROTOTYPE:
743 CODE: 1427 CODE:
744 while (nreqs) 1428 while (eio_nreqs ())
745 { 1429 {
746 poll_wait (); 1430 poll_wait ();
747 poll_cb (); 1431 poll_cb ();
748 } 1432 }
749 1433
750void
751poll()
752 PROTOTYPE:
753 CODE:
754 if (nreqs)
755 {
756 poll_wait ();
757 poll_cb ();
758 }
759
760int 1434int
761poll_fileno() 1435poll ()
762 PROTOTYPE:
763 CODE: 1436 CODE:
764 RETVAL = respipe [0]; 1437 poll_wait ();
765 OUTPUT:
766 RETVAL
767
768int
769poll_cb(...)
770 PROTOTYPE:
771 CODE:
772 RETVAL = poll_cb (); 1438 RETVAL = poll_cb ();
773 OUTPUT: 1439 OUTPUT:
774 RETVAL 1440 RETVAL
775 1441
776void
777poll_wait()
778 PROTOTYPE:
779 CODE:
780 if (nreqs)
781 poll_wait ();
782
783int 1442int
784nreqs() 1443poll_fileno ()
785 PROTOTYPE:
786 CODE: 1444 CODE:
787 RETVAL = nreqs; 1445 RETVAL = s_epipe_fd (&respipe);
788 OUTPUT: 1446 OUTPUT:
789 RETVAL 1447 RETVAL
790 1448
1449int
1450poll_cb (...)
1451 PROTOTYPE:
1452 CODE:
1453 RETVAL = poll_cb ();
1454 OUTPUT:
1455 RETVAL
1456
1457void
1458poll_wait ()
1459 CODE:
1460 poll_wait ();
1461
1462int
1463nreqs ()
1464 CODE:
1465 RETVAL = eio_nreqs ();
1466 OUTPUT:
1467 RETVAL
1468
1469int
1470nready ()
1471 CODE:
1472 RETVAL = eio_nready ();
1473 OUTPUT:
1474 RETVAL
1475
1476int
1477npending ()
1478 CODE:
1479 RETVAL = eio_npending ();
1480 OUTPUT:
1481 RETVAL
1482
1483int
1484nthreads ()
1485 CODE:
1486 RETVAL = eio_nthreads ();
1487 OUTPUT:
1488 RETVAL
1489
1490int
1491fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1492 CODE:
1493 RETVAL = posix_fadvise (fh, offset, length, advice);
1494 OUTPUT:
1495 RETVAL
1496
1497ssize_t
1498sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1499 CODE:
1500 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1501 OUTPUT:
1502 RETVAL
1503
1504void
1505mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1506 PPCODE:
1507 sv_unmagic (scalar, MMAP_MAGIC);
1508{
1509 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1510 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1511 if (addr == (void *)-1)
1512 XSRETURN_NO;
1513
1514 sv_force_normal (scalar);
1515
1516 /* we store the length in mg_obj, as namlen is I32 :/ */
1517 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1518 ->mg_obj = (SV *)length;
1519
1520 SvUPGRADE (scalar, SVt_PV); /* nop... */
1521
1522 if (!(prot & PROT_WRITE))
1523 SvREADONLY_on (scalar);
1524
1525 if (SvLEN (scalar))
1526 Safefree (SvPVX (scalar));
1527
1528 SvPVX (scalar) = (char *)addr;
1529 SvCUR_set (scalar, length);
1530 SvLEN_set (scalar, 0);
1531 SvPOK_only (scalar);
1532
1533 XSRETURN_YES;
1534}
1535
1536void
1537munmap (SV *scalar)
1538 CODE:
1539 sv_unmagic (scalar, MMAP_MAGIC);
1540
1541int
1542madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1543 ALIAS:
1544 mprotect = 1
1545 CODE:
1546{
1547 STRLEN svlen;
1548 void *addr = SvPVbyte (scalar, svlen);
1549 size_t len = SvUV (length);
1550
1551 if (offset < 0)
1552 offset += svlen;
1553
1554 if (offset < 0 || offset > svlen)
1555 croak ("offset outside of scalar");
1556
1557 if (!SvOK (length) || len + offset > svlen)
1558 len = svlen - offset;
1559
1560 addr = (void *)(((intptr_t)addr) + offset);
1561 eio_page_align (&addr, &len);
1562
1563 switch (ix)
1564 {
1565 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1566 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1567 }
1568}
1569 OUTPUT:
1570 RETVAL
1571
1572int
1573munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1574 CODE:
1575{
1576 STRLEN svlen;
1577 void *addr = SvPVbyte (scalar, svlen);
1578 size_t len = SvUV (length);
1579
1580 if (offset < 0)
1581 offset += svlen;
1582
1583 if (offset < 0 || offset > svlen)
1584 croak ("offset outside of scalar");
1585
1586 if (!SvOK (length) || len + offset > svlen)
1587 len = svlen - offset;
1588
1589 addr = (void *)(((intptr_t)addr) + offset);
1590 eio_page_align (&addr, &len);
1591#if _POSIX_MEMLOCK_RANGE
1592 RETVAL = munlock (addr, len);
1593#else
1594 RETVAL = ((errno = ENOSYS), -1);
1595#endif
1596}
1597 OUTPUT:
1598 RETVAL
1599
1600int
1601munlockall ()
1602 CODE:
1603#if _POSIX_MEMLOCK
1604 munlockall ();
1605#else
1606 RETVAL = -1;
1607 errno = ENOSYS;
1608#endif
1609 OUTPUT:
1610 RETVAL
1611
1612void _on_next_submit (SV *cb)
1613 CODE:
1614 SvREFCNT_dec (on_next_submit);
1615 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1616
1617PROTOTYPES: DISABLE
1618
1619MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1620
1621void
1622cancel (aio_req_ornot req)
1623 CODE:
1624 eio_cancel (req);
1625
1626void
1627cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1628 PPCODE:
1629{
1630 if (GIMME_V != G_VOID)
1631 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1632
1633 if (items > 1)
1634 {
1635 SV *cb_cv =get_cb (callback);
1636
1637 SvREFCNT_dec (req->callback);
1638 req->callback = SvREFCNT_inc (cb_cv);
1639 }
1640}
1641
1642MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1643
1644void
1645add (aio_req grp, ...)
1646 PPCODE:
1647{
1648 int i;
1649
1650 if (grp->int1 == 2)
1651 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1652
1653 for (i = 1; i < items; ++i )
1654 {
1655 aio_req req;
1656
1657 if (GIMME_V != G_VOID)
1658 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1659
1660 req = SvAIO_REQ (ST (i));
1661
1662 if (req)
1663 eio_grp_add (grp, req);
1664 }
1665}
1666
1667void
1668cancel_subs (aio_req_ornot req)
1669 CODE:
1670 req_cancel_subs (req);
1671
1672void
1673result (aio_req grp, ...)
1674 CODE:
1675{
1676 int i;
1677 AV *av;
1678
1679 grp->errorno = errno;
1680
1681 av = newAV ();
1682 av_extend (av, items - 1);
1683
1684 for (i = 1; i < items; ++i )
1685 av_push (av, newSVsv (ST (i)));
1686
1687 SvREFCNT_dec (grp->sv1);
1688 grp->sv1 = (SV *)av;
1689}
1690
1691void
1692errno (aio_req grp, int errorno = errno)
1693 CODE:
1694 grp->errorno = errorno;
1695
1696void
1697limit (aio_req grp, int limit)
1698 CODE:
1699 eio_grp_limit (grp, limit);
1700
1701void
1702feed (aio_req grp, SV *callback=&PL_sv_undef)
1703 CODE:
1704{
1705 SvREFCNT_dec (grp->sv2);
1706 grp->sv2 = newSVsv (callback);
1707 grp->feed = aio_grp_feed;
1708
1709 if (grp->int2 <= 0)
1710 grp->int2 = 2;
1711
1712 eio_grp_limit (grp, grp->int2);
1713}
1714

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