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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.27 by root, Wed Aug 17 04:47:02 2005 UTC vs.
Revision 1.181 by root, Tue Feb 15 03:21:41 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->statdata)
148 {
149 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
150 PL_laststatval = req->result;
151 PL_statcache = *(req->statdata);
152 }
153
154 ENTER;
155 PUSHMARK (SP);
156 XPUSHs (sv_2mortal (newSViv (req->result)));
157
158 if (req->type == REQ_OPEN)
159 {
160 /* convert fd to fh */
161 SV *fh;
162
163 PUTBACK;
164 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
165 SPAGAIN;
166
167 fh = SvREFCNT_inc (POPs);
168
169 PUSHMARK (SP);
170 XPUSHs (sv_2mortal (fh));
171 }
172
173 if (SvOK (req->callback))
174 {
175 PUTBACK;
176 call_sv (req->callback, G_VOID | G_EVAL);
177 SPAGAIN;
178
179 if (SvTRUE (ERRSV))
180 {
181 free_req (req);
182 croak (0);
183 }
184 }
185
186 LEAVE;
187
188 errno = errorno;
189 count++;
190 }
191
192 free_req (req);
193 }
194
195 return count;
196}
197
198static void *aio_proc(void *arg);
199
200static void
201start_thread (void)
202{
203 sigset_t fullsigset, oldsigset;
204 pthread_t tid;
205 pthread_attr_t attr;
206
207 pthread_attr_init (&attr);
208 pthread_attr_setstacksize (&attr, STACKSIZE);
209 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
210
211 sigfillset (&fullsigset);
212 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
213
214 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
215 started++;
216
217 sigprocmask (SIG_SETMASK, &oldsigset, 0);
218}
219
220static void
221send_req (aio_req req)
222{
223 nreqs++;
224
225 pthread_mutex_lock (&reqlock);
226
227 req->next = 0;
228
229 if (reqe)
230 {
231 reqe->next = req;
232 reqe = req;
233 }
234 else
235 reqe = reqs = req;
236
237 pthread_cond_signal (&reqwait);
238 pthread_mutex_unlock (&reqlock);
239
240 if (nreqs > max_outstanding)
241 for (;;)
242 {
243 poll_cb ();
244
245 if (nreqs <= max_outstanding)
246 break;
247
248 poll_wait ();
249 }
250}
251
252static void
253end_thread (void)
254{
255 aio_req req;
256 Newz (0, req, 1, aio_cb);
257 req->type = REQ_QUIT;
258
259 send_req (req);
260}
261
262static void min_parallel (int nthreads)
263{
264 while (nthreads > started)
265 start_thread ();
266}
267
268static void max_parallel (int nthreads)
269{
270 int cur = started;
271
272 while (cur > nthreads)
273 {
274 end_thread ();
275 cur--;
276 }
277
278 while (started > nthreads)
279 {
280 poll_wait ();
281 poll_cb ();
282 }
283}
284
285static void create_pipe ()
286{
287 if (pipe (respipe))
288 croak ("unable to initialize result pipe");
289
290 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
291 croak ("cannot set result pipe to nonblocking mode");
292
293 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
294 croak ("cannot set result pipe to nonblocking mode");
295}
296
297static void atfork_prepare (void)
298{
299 for (;;) {
300
301 for (;;)
302 {
303 poll_cb ();
304
305 if (!nreqs)
306 break;
307
308 poll_wait ();
309 }
310
311 pthread_mutex_lock (&reqlock);
312
313 if (!nreqs)
314 break;
315
316 pthread_mutex_unlock (&reqlock);
317 }
318
319 pthread_mutex_lock (&reslock);
320
321 assert (!nreqs && !reqs && !ress);
322}
323
324static void atfork_parent (void)
325{
326 pthread_mutex_unlock (&reslock);
327 pthread_mutex_unlock (&reqlock);
328}
329
330static void atfork_child (void)
331{
332 int restart = started;
333 started = 0;
334
335 atfork_parent ();
336
337 min_parallel (restart);
338}
339
340/*****************************************************************************/
341/* work around various missing functions */
342
343#if !HAVE_PREADWRITE
344# define pread aio_pread
345# define pwrite aio_pwrite
346
347/*
348 * make our pread/pwrite safe against themselves, but not against
349 * normal read/write by using a mutex. slows down execution a lot,
350 * but that's your problem, not mine.
351 */
352static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
353
354static ssize_t
355pread (int fd, void *buf, size_t count, off_t offset)
356{
357 ssize_t res;
358 off_t ooffset;
359
360 pthread_mutex_lock (&iolock);
361 ooffset = lseek (fd, 0, SEEK_CUR);
362 lseek (fd, offset, SEEK_SET);
363 res = read (fd, buf, count);
364 lseek (fd, ooffset, SEEK_SET);
365 pthread_mutex_unlock (&iolock);
366
367 return res;
368}
369
370static ssize_t
371pwrite (int fd, void *buf, size_t count, off_t offset)
372{
373 ssize_t res;
374 off_t ooffset;
375
376 pthread_mutex_lock (&iolock);
377 ooffset = lseek (fd, 0, SEEK_CUR);
378 lseek (fd, offset, SEEK_SET);
379 res = write (fd, buf, count);
380 lseek (fd, offset, SEEK_SET);
381 pthread_mutex_unlock (&iolock);
382
383 return res;
384}
385#endif
386
387#if !HAVE_FDATASYNC
388# define fdatasync fsync
389#endif
390
391#if !HAVE_READAHEAD
392# define readahead aio_readahead
393
394static char readahead_buf[4096];
395
396static ssize_t
397readahead (int fd, off_t offset, size_t count)
398{
399 while (count > 0)
400 {
401 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
402
403 pread (fd, readahead_buf, len, offset);
404 offset += len;
405 count -= len;
406 }
407
408 errno = 0;
409}
410#endif
411
412/*****************************************************************************/
413
414static void *
415aio_proc (void *thr_arg)
416{
417 aio_req req;
418 int type;
419
420 do
421 {
422 pthread_mutex_lock (&reqlock);
423
424 for (;;)
425 {
426 req = reqs;
427
428 if (reqs)
429 {
430 reqs = reqs->next;
431 if (!reqs) reqe = 0;
432 }
433
434 if (req)
435 break;
436
437 pthread_cond_wait (&reqwait, &reqlock);
438 }
439
440 pthread_mutex_unlock (&reqlock);
441
442 errno = 0; /* strictly unnecessary */
443
444 type = req->type;
445
446 switch (type)
447 {
448 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
449 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
450
451 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
452
453 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
454 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
455 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
456
457 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
458 case REQ_CLOSE: req->result = close (req->fd); break;
459 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
460 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
461 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
462
463 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
464 case REQ_FSYNC: req->result = fsync (req->fd); break;
465
466 case REQ_QUIT:
467 break;
468
469 default:
470 req->result = ENOSYS;
471 break;
472 }
473
474 req->errorno = errno;
475
476 pthread_mutex_lock (&reslock);
477
478 req->next = 0;
479
480 if (rese)
481 {
482 rese->next = req;
483 rese = req;
484 } 394 }
485 else 395 else
486 { 396 {
487 rese = ress = req; 397 sv_result = newSViv (req->result);
488 398 SvREADONLY_on (sv_result);
489 /* write a dummy byte to the pipe so fh becomes ready */
490 write (respipe [1], &respipe, 1);
491 } 399 }
492 400
493 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;
494 } 592 }
495 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);
496 707
497 return 0; 708 return 0;
498} 709}
499 710
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
500#define dREQ \ 724#define dREQ \
725 SV *cb_cv; \
501 aio_req req; \ 726 aio_req req; \
727 int req_pri = next_pri; \
728 next_pri = EIO_PRI_DEFAULT; \
502 \ 729 \
503 if (SvOK (callback) && !SvROK (callback)) \ 730 cb_cv = get_cb (callback); \
504 croak ("clalback must be undef or of reference type"); \
505 \ 731 \
506 Newz (0, req, 1, aio_cb); \ 732 Newz (0, req, 1, eio_req); \
507 if (!req) \ 733 if (!req) \
508 croak ("out of memory during aio_req allocation"); \ 734 croak ("out of memory during eio_req allocation"); \
509 \ 735 \
510 req->callback = newSVsv (callback); 736 req->callback = SvREFCNT_inc (cb_cv); \
511 737 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
512MODULE = IO::AIO PACKAGE = IO::AIO 747MODULE = IO::AIO PACKAGE = IO::AIO
513 748
514PROTOTYPES: ENABLE 749PROTOTYPES: ENABLE
515 750
516BOOT: 751BOOT:
517{ 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
518 create_pipe (); 861 create_respipe ();
519 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
520}
521 862
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
522void 870void
523min_parallel(nthreads) 871max_poll_reqs (unsigned int nreqs)
524 int nthreads
525 PROTOTYPE: $ 872 PROTOTYPE: $
873 CODE:
874 eio_set_max_poll_reqs (nreqs);
526 875
527void 876void
528max_parallel(nthreads) 877max_poll_time (double nseconds)
529 int nthreads
530 PROTOTYPE: $ 878 PROTOTYPE: $
531
532int
533max_outstanding(nreqs)
534 int nreqs
535 PROTOTYPE: $
536 CODE: 879 CODE:
537 RETVAL = max_outstanding; 880 eio_set_max_poll_time (nseconds);
881
882void
883min_parallel (unsigned int nthreads)
884 PROTOTYPE: $
885 CODE:
886 eio_set_min_parallel (nthreads);
887
888void
889max_parallel (unsigned int nthreads)
890 PROTOTYPE: $
891 CODE:
892 eio_set_max_parallel (nthreads);
893
894void
895max_idle (unsigned int nthreads)
896 PROTOTYPE: $
897 CODE:
898 eio_set_max_idle (nthreads);
899
900void
901idle_timeout (unsigned int seconds)
902 PROTOTYPE: $
903 CODE:
904 eio_set_idle_timeout (seconds);
905
906void
907max_outstanding (unsigned int maxreqs)
908 PROTOTYPE: $
909 CODE:
538 max_outstanding = nreqs; 910 max_outstanding = maxreqs;
539 911
540void 912void
541aio_open(pathname,flags,mode,callback=&PL_sv_undef) 913aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
542 SV * pathname
543 int flags
544 int mode
545 SV * callback
546 PROTOTYPE: $$$;$
547 CODE: 914 PPCODE:
548{ 915{
549 dREQ; 916 dREQ;
550 917
551 req->type = REQ_OPEN; 918 req->type = EIO_OPEN;
552 req->data = newSVsv (pathname); 919 req->sv1 = newSVsv (pathname);
553 req->dataptr = SvPVbyte_nolen (req->data); 920 req->ptr1 = SvPVbyte_nolen (req->sv1);
554 req->fd = flags; 921 req->int1 = flags;
555 req->mode = mode; 922 req->int2 = mode;
556 923
557 send_req (req); 924 REQ_SEND;
558} 925}
559 926
560void 927void
561aio_close(fh,callback=&PL_sv_undef) 928aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
562 SV * fh
563 SV * callback
564 PROTOTYPE: $;$
565 ALIAS: 929 ALIAS:
566 aio_close = REQ_CLOSE
567 aio_fsync = REQ_FSYNC 930 aio_fsync = EIO_FSYNC
568 aio_fdatasync = REQ_FDATASYNC 931 aio_fdatasync = EIO_FDATASYNC
569 CODE: 932 PPCODE:
570{ 933{
934 int fd = s_fileno_croak (fh, 0);
571 dREQ; 935 dREQ;
572 936
573 req->type = ix; 937 req->type = ix;
574 req->fh = newSVsv (fh); 938 req->sv1 = newSVsv (fh);
575 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 939 req->int1 = fd;
576 940
577 send_req (req); 941 REQ_SEND (req);
578} 942}
579 943
580void 944void
945aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
946 PPCODE:
947{
948 int fd = s_fileno_croak (fh, 0);
949 dREQ;
950
951 req->type = EIO_SYNC_FILE_RANGE;
952 req->sv1 = newSVsv (fh);
953 req->int1 = fd;
954 req->offs = offset;
955 req->size = nbytes;
956 req->int2 = flags;
957
958 REQ_SEND (req);
959}
960
961void
962aio_close (SV *fh, SV *callback=&PL_sv_undef)
963 PPCODE:
964{
965 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
966 int fd = s_fileno_croak (fh, 0);
967 dREQ;
968
969 if (close_pipe < 0)
970 {
971 int pipefd [2];
972
973 if (pipe (pipefd) < 0
974 || close (pipefd [1]) < 0
975 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
976 abort (); /*D*/
977
978 close_pipe = pipefd [0];
979 }
980
981 req->type = EIO_DUP2;
982 req->int1 = close_pipe;
983 req->sv2 = newSVsv (fh);
984 req->int2 = fd;
985
986 REQ_SEND (req);
987}
988
989void
581aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 990aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
582 SV * fh
583 UV offset
584 IV length
585 SV * data
586 IV dataoffset
587 SV * callback
588 ALIAS: 991 ALIAS:
589 aio_read = REQ_READ 992 aio_read = EIO_READ
590 aio_write = REQ_WRITE 993 aio_write = EIO_WRITE
591 PROTOTYPE: $$$$$;$
592 CODE: 994 PPCODE:
593{ 995{
594 aio_req req;
595 STRLEN svlen; 996 STRLEN svlen;
997 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
596 char *svptr = SvPVbyte (data, svlen); 998 char *svptr = SvPVbyte (data, svlen);
597 999 UV len = SvUV (length);
598 SvUPGRADE (data, SVt_PV);
599 SvPOK_on (data);
600 1000
601 if (dataoffset < 0) 1001 if (dataoffset < 0)
602 dataoffset += svlen; 1002 dataoffset += svlen;
603 1003
604 if (dataoffset < 0 || dataoffset > svlen) 1004 if (dataoffset < 0 || dataoffset > svlen)
605 croak ("data offset outside of string"); 1005 croak ("dataoffset outside of data scalar");
606 1006
607 if (ix == REQ_WRITE) 1007 if (ix == EIO_WRITE)
608 { 1008 {
609 /* write: check length and adjust. */ 1009 /* write: check length and adjust. */
610 if (length < 0 || length + dataoffset > svlen) 1010 if (!SvOK (length) || len + dataoffset > svlen)
611 length = svlen - dataoffset; 1011 len = svlen - dataoffset;
612 } 1012 }
613 else 1013 else
614 { 1014 {
615 /* read: grow scalar as necessary */ 1015 /* read: check type and grow scalar as necessary */
1016 SvUPGRADE (data, SVt_PV);
616 svptr = SvGROW (data, length + dataoffset); 1017 svptr = SvGROW (data, len + dataoffset + 1);
617 } 1018 }
618
619 if (length < 0)
620 croak ("length must not be negative");
621 1019
622 { 1020 {
623 dREQ; 1021 dREQ;
624 1022
625 req->type = ix; 1023 req->type = ix;
626 req->fh = newSVsv (fh); 1024 req->sv1 = newSVsv (fh);
627 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1025 req->int1 = fd;
628 : IoOFP (sv_2io (fh))); 1026 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
629 req->offset = offset; 1027 req->size = len;
630 req->length = length;
631 req->data = SvREFCNT_inc (data); 1028 req->sv2 = SvREFCNT_inc (data);
632 req->dataptr = (char *)svptr + dataoffset; 1029 req->ptr2 = (char *)svptr + dataoffset;
1030 req->stroffset = dataoffset;
633 1031
634 send_req (req); 1032 if (!SvREADONLY (data))
1033 {
1034 SvREADONLY_on (data);
1035 req->flags |= FLAG_SV2_RO_OFF;
1036 }
1037
1038 REQ_SEND;
635 } 1039 }
636} 1040}
637 1041
638void 1042void
639aio_readahead(fh,offset,length,callback=&PL_sv_undef) 1043aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
640 SV * fh
641 UV offset
642 IV length
643 SV * callback
644 PROTOTYPE: $$$;$
645 CODE: 1044 PPCODE:
646{ 1045{
1046 SV *data;
1047 dREQ;
1048
1049 req->type = EIO_READLINK;
1050 req->sv1 = newSVsv (path);
1051 req->ptr1 = SvPVbyte_nolen (req->sv1);
1052
1053 REQ_SEND;
1054}
1055
1056void
1057aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1058 PPCODE:
1059{
1060 int ifd = s_fileno_croak (in_fh , 0);
1061 int ofd = s_fileno_croak (out_fh, 1);
647 dREQ; 1062 dREQ;
648 1063
1064 req->type = EIO_SENDFILE;
1065 req->sv1 = newSVsv (out_fh);
1066 req->int1 = ofd;
1067 req->sv2 = newSVsv (in_fh);
1068 req->int2 = ifd;
1069 req->offs = in_offset;
1070 req->size = length;
1071
1072 REQ_SEND;
1073}
1074
1075void
1076aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1077 PPCODE:
1078{
1079 int fd = s_fileno_croak (fh, 0);
1080 dREQ;
1081
649 req->type = REQ_READAHEAD; 1082 req->type = EIO_READAHEAD;
650 req->fh = newSVsv (fh); 1083 req->sv1 = newSVsv (fh);
651 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1084 req->int1 = fd;
652 req->offset = offset; 1085 req->offs = offset;
653 req->length = length; 1086 req->size = length;
654 1087
655 send_req (req); 1088 REQ_SEND;
656} 1089}
657 1090
658void 1091void
659aio_stat(fh_or_path,callback=&PL_sv_undef) 1092aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
660 SV * fh_or_path
661 SV * callback
662 ALIAS: 1093 ALIAS:
663 aio_stat = REQ_STAT 1094 aio_stat = EIO_STAT
664 aio_lstat = REQ_LSTAT 1095 aio_lstat = EIO_LSTAT
1096 aio_statvfs = EIO_STATVFS
665 CODE: 1097 PPCODE:
666{ 1098{
667 dREQ; 1099 dREQ;
668 1100
669 New (0, req->statdata, 1, Stat_t); 1101 req->sv1 = newSVsv (fh_or_path);
670 if (!req->statdata)
671 {
672 free_req (req);
673 croak ("out of memory during aio_req->statdata allocation");
674 }
675 1102
676 if (SvPOK (fh_or_path)) 1103 if (SvPOK (req->sv1))
677 { 1104 {
678 req->type = ix; 1105 req->type = ix;
679 req->data = newSVsv (fh_or_path);
680 req->dataptr = SvPVbyte_nolen (req->data); 1106 req->ptr1 = SvPVbyte_nolen (req->sv1);
681 } 1107 }
682 else 1108 else
683 { 1109 {
684 req->type = REQ_FSTAT; 1110 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
685 req->fh = newSVsv (fh_or_path);
686 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1111 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
687 } 1112 }
688 1113
689 send_req (req); 1114 REQ_SEND;
690} 1115}
691 1116
1117UV
1118major (UV dev)
1119 ALIAS:
1120 minor = 1
1121 CODE:
1122 RETVAL = ix ? major (dev) : minor (dev);
1123 OUTPUT:
1124 RETVAL
1125
1126UV
1127makedev (UV maj, UV min)
1128 CODE:
1129 RETVAL = makedev (maj, min);
1130 OUTPUT:
1131 RETVAL
1132
692void 1133void
1134aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1135 PPCODE:
1136{
1137 dREQ;
1138
1139 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1140 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1141 req->sv1 = newSVsv (fh_or_path);
1142
1143 if (SvPOK (req->sv1))
1144 {
1145 req->type = EIO_UTIME;
1146 req->ptr1 = SvPVbyte_nolen (req->sv1);
1147 }
1148 else
1149 {
1150 req->type = EIO_FUTIME;
1151 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1152 }
1153
1154 REQ_SEND;
1155}
1156
1157void
1158aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1159 PPCODE:
1160{
1161 dREQ;
1162
1163 req->sv1 = newSVsv (fh_or_path);
1164 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1165
1166 if (SvPOK (req->sv1))
1167 {
1168 req->type = EIO_TRUNCATE;
1169 req->ptr1 = SvPVbyte_nolen (req->sv1);
1170 }
1171 else
1172 {
1173 req->type = EIO_FTRUNCATE;
1174 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1175 }
1176
1177 REQ_SEND;
1178}
1179
1180void
1181aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1182 ALIAS:
1183 aio_chmod = EIO_CHMOD
1184 aio_mkdir = EIO_MKDIR
1185 PPCODE:
1186{
1187 dREQ;
1188
1189 req->int2 = mode;
1190 req->sv1 = newSVsv (fh_or_path);
1191
1192 if (SvPOK (req->sv1))
1193 {
1194 req->type = ix;
1195 req->ptr1 = SvPVbyte_nolen (req->sv1);
1196 }
1197 else
1198 {
1199 req->type = EIO_FCHMOD;
1200 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1201 }
1202
1203 REQ_SEND;
1204}
1205
1206void
1207aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1208 PPCODE:
1209{
1210 dREQ;
1211
1212 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1213 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1214 req->sv1 = newSVsv (fh_or_path);
1215
1216 if (SvPOK (req->sv1))
1217 {
1218 req->type = EIO_CHOWN;
1219 req->ptr1 = SvPVbyte_nolen (req->sv1);
1220 }
1221 else
1222 {
1223 req->type = EIO_FCHOWN;
1224 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1225 }
1226
1227 REQ_SEND;
1228}
1229
1230void
1231aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1232 PPCODE:
1233{
1234 dREQ;
1235
1236 req->type = EIO_READDIR;
1237 req->sv1 = newSVsv (pathname);
1238 req->ptr1 = SvPVbyte_nolen (req->sv1);
1239 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1240
1241 if (flags & EIO_READDIR_DENTS)
1242 req->int1 |= EIO_READDIR_CUSTOM2;
1243
1244 REQ_SEND;
1245}
1246
1247void
693aio_unlink(pathname,callback=&PL_sv_undef) 1248aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
694 SV * pathname
695 SV * callback
696 ALIAS: 1249 ALIAS:
697 aio_unlink = REQ_UNLINK 1250 aio_unlink = EIO_UNLINK
698 aio_rmdir = REQ_RMDIR 1251 aio_rmdir = EIO_RMDIR
1252 aio_readdir = EIO_READDIR
699 CODE: 1253 PPCODE:
700{ 1254{
701 dREQ; 1255 dREQ;
702 1256
703 req->type = ix; 1257 req->type = ix;
704 req->data = newSVsv (pathname); 1258 req->sv1 = newSVsv (pathname);
705 req->dataptr = SvPVbyte_nolen (req->data); 1259 req->ptr1 = SvPVbyte_nolen (req->sv1);
706
707 send_req (req);
708}
709 1260
1261 REQ_SEND;
1262}
1263
710void 1264void
711aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1265aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
712 SV * oldpath 1266 ALIAS:
713 SV * newpath 1267 aio_link = EIO_LINK
714 SV * callback 1268 aio_symlink = EIO_SYMLINK
1269 aio_rename = EIO_RENAME
715 CODE: 1270 PPCODE:
716{ 1271{
717 dREQ; 1272 dREQ;
718 1273
719 req->type = REQ_SYMLINK; 1274 req->type = ix;
720 req->fh = newSVsv (oldpath); 1275 req->sv1 = newSVsv (oldpath);
721 req->data2ptr = SvPVbyte_nolen (req->fh); 1276 req->ptr1 = SvPVbyte_nolen (req->sv1);
722 req->data = newSVsv (newpath); 1277 req->sv2 = newSVsv (newpath);
723 req->dataptr = SvPVbyte_nolen (req->data); 1278 req->ptr2 = SvPVbyte_nolen (req->sv2);
724 1279
725 send_req (req); 1280 REQ_SEND;
726} 1281}
727 1282
728void 1283void
1284aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1285 PPCODE:
1286{
1287 dREQ;
1288
1289 req->type = EIO_MKNOD;
1290 req->sv1 = newSVsv (pathname);
1291 req->ptr1 = SvPVbyte_nolen (req->sv1);
1292 req->int2 = (mode_t)mode;
1293 req->offs = dev;
1294
1295 REQ_SEND;
1296}
1297
1298void
1299aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1300 ALIAS:
1301 aio_mtouch = EIO_MTOUCH
1302 aio_msync = EIO_MSYNC
1303 PPCODE:
1304{
1305 STRLEN svlen;
1306 char *svptr = SvPVbyte (data, svlen);
1307 UV len = SvUV (length);
1308
1309 if (offset < 0)
1310 offset += svlen;
1311
1312 if (offset < 0 || offset > svlen)
1313 croak ("offset outside of scalar");
1314
1315 if (!SvOK (length) || len + offset > svlen)
1316 len = svlen - offset;
1317
1318 {
1319 dREQ;
1320
1321 req->type = ix;
1322 req->sv2 = SvREFCNT_inc (data);
1323 req->ptr2 = (char *)svptr + offset;
1324 req->size = len;
1325 req->int1 = flags;
1326
1327 REQ_SEND;
1328 }
1329}
1330
1331void
1332aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1333 PPCODE:
1334{
1335 STRLEN svlen;
1336 char *svptr = SvPVbyte (data, svlen);
1337 UV len = SvUV (length);
1338
1339 if (offset < 0)
1340 offset += svlen;
1341
1342 if (offset < 0 || offset > svlen)
1343 croak ("offset outside of scalar");
1344
1345 if (!SvOK (length) || len + offset > svlen)
1346 len = svlen - offset;
1347
1348 {
1349 dREQ;
1350
1351 req->type = EIO_MLOCK;
1352 req->sv2 = SvREFCNT_inc (data);
1353 req->ptr2 = (char *)svptr + offset;
1354 req->size = len;
1355
1356 REQ_SEND;
1357 }
1358}
1359
1360void
1361aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1362 PPCODE:
1363{
1364 dREQ;
1365
1366 req->type = EIO_MLOCKALL;
1367 req->int1 = flags;
1368
1369 REQ_SEND;
1370}
1371
1372void
1373aio_busy (double delay, SV *callback=&PL_sv_undef)
1374 PPCODE:
1375{
1376 dREQ;
1377
1378 req->type = EIO_BUSY;
1379 req->nv1 = delay < 0. ? 0. : delay;
1380
1381 REQ_SEND;
1382}
1383
1384void
1385aio_group (SV *callback=&PL_sv_undef)
1386 PPCODE:
1387{
1388 dREQ;
1389
1390 req->type = EIO_GROUP;
1391
1392 req_submit (req);
1393 XPUSHs (req_sv (req, aio_grp_stash));
1394}
1395
1396void
1397aio_nop (SV *callback=&PL_sv_undef)
1398 ALIAS:
1399 aio_nop = EIO_NOP
1400 aio_sync = EIO_SYNC
1401 PPCODE:
1402{
1403 dREQ;
1404
1405 req->type = ix;
1406
1407 REQ_SEND;
1408}
1409
1410int
1411aioreq_pri (int pri = 0)
1412 CODE:
1413 RETVAL = next_pri;
1414 if (items > 0)
1415 {
1416 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1417 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1418 next_pri = pri;
1419 }
1420 OUTPUT:
1421 RETVAL
1422
1423void
1424aioreq_nice (int nice = 0)
1425 CODE:
1426 nice = next_pri - nice;
1427 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1428 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1429 next_pri = nice;
1430
1431void
729flush() 1432flush ()
730 PROTOTYPE:
731 CODE: 1433 CODE:
732 while (nreqs) 1434 while (eio_nreqs ())
733 { 1435 {
734 poll_wait (); 1436 poll_wait ();
735 poll_cb (); 1437 poll_cb ();
736 } 1438 }
737 1439
738void
739poll()
740 PROTOTYPE:
741 CODE:
742 if (nreqs)
743 {
744 poll_wait ();
745 poll_cb ();
746 }
747
748int 1440int
749poll_fileno() 1441poll ()
750 PROTOTYPE:
751 CODE: 1442 CODE:
752 RETVAL = respipe [0]; 1443 poll_wait ();
753 OUTPUT:
754 RETVAL
755
756int
757poll_cb(...)
758 PROTOTYPE:
759 CODE:
760 RETVAL = poll_cb (); 1444 RETVAL = poll_cb ();
761 OUTPUT: 1445 OUTPUT:
762 RETVAL 1446 RETVAL
763 1447
764void
765poll_wait()
766 PROTOTYPE:
767 CODE:
768 if (nreqs)
769 poll_wait ();
770
771int 1448int
772nreqs() 1449poll_fileno ()
773 PROTOTYPE:
774 CODE: 1450 CODE:
775 RETVAL = nreqs; 1451 RETVAL = s_epipe_fd (&respipe);
776 OUTPUT: 1452 OUTPUT:
777 RETVAL 1453 RETVAL
778 1454
1455int
1456poll_cb (...)
1457 PROTOTYPE:
1458 CODE:
1459 RETVAL = poll_cb ();
1460 OUTPUT:
1461 RETVAL
1462
1463void
1464poll_wait ()
1465 CODE:
1466 poll_wait ();
1467
1468int
1469nreqs ()
1470 CODE:
1471 RETVAL = eio_nreqs ();
1472 OUTPUT:
1473 RETVAL
1474
1475int
1476nready ()
1477 CODE:
1478 RETVAL = eio_nready ();
1479 OUTPUT:
1480 RETVAL
1481
1482int
1483npending ()
1484 CODE:
1485 RETVAL = eio_npending ();
1486 OUTPUT:
1487 RETVAL
1488
1489int
1490nthreads ()
1491 CODE:
1492 RETVAL = eio_nthreads ();
1493 OUTPUT:
1494 RETVAL
1495
1496int
1497fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1498 CODE:
1499 RETVAL = posix_fadvise (fh, offset, length, advice);
1500 OUTPUT:
1501 RETVAL
1502
1503ssize_t
1504sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1505 CODE:
1506 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1507 OUTPUT:
1508 RETVAL
1509
1510void
1511mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1512 PPCODE:
1513 sv_unmagic (scalar, MMAP_MAGIC);
1514{
1515 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1516 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1517 if (addr == (void *)-1)
1518 XSRETURN_NO;
1519
1520 sv_force_normal (scalar);
1521
1522 /* we store the length in mg_obj, as namlen is I32 :/ */
1523 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1524 ->mg_obj = (SV *)length;
1525
1526 SvUPGRADE (scalar, SVt_PV); /* nop... */
1527
1528 if (!(prot & PROT_WRITE))
1529 SvREADONLY_on (scalar);
1530
1531 if (SvLEN (scalar))
1532 Safefree (SvPVX (scalar));
1533
1534 SvPVX (scalar) = (char *)addr;
1535 SvCUR_set (scalar, length);
1536 SvLEN_set (scalar, 0);
1537 SvPOK_only (scalar);
1538
1539 XSRETURN_YES;
1540}
1541
1542void
1543munmap (SV *scalar)
1544 CODE:
1545 sv_unmagic (scalar, MMAP_MAGIC);
1546
1547int
1548madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1549 ALIAS:
1550 mprotect = 1
1551 CODE:
1552{
1553 STRLEN svlen;
1554 void *addr = SvPVbyte (scalar, svlen);
1555 size_t len = SvUV (length);
1556
1557 if (offset < 0)
1558 offset += svlen;
1559
1560 if (offset < 0 || offset > svlen)
1561 croak ("offset outside of scalar");
1562
1563 if (!SvOK (length) || len + offset > svlen)
1564 len = svlen - offset;
1565
1566 addr = (void *)(((intptr_t)addr) + offset);
1567 eio_page_align (&addr, &len);
1568
1569 switch (ix)
1570 {
1571 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1572 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1573 }
1574}
1575 OUTPUT:
1576 RETVAL
1577
1578int
1579munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1580 CODE:
1581{
1582 STRLEN svlen;
1583 void *addr = SvPVbyte (scalar, svlen);
1584 size_t len = SvUV (length);
1585
1586 if (offset < 0)
1587 offset += svlen;
1588
1589 if (offset < 0 || offset > svlen)
1590 croak ("offset outside of scalar");
1591
1592 if (!SvOK (length) || len + offset > svlen)
1593 len = svlen - offset;
1594
1595 addr = (void *)(((intptr_t)addr) + offset);
1596 eio_page_align (&addr, &len);
1597#if _POSIX_MEMLOCK_RANGE
1598 RETVAL = munlock (addr, len);
1599#else
1600 RETVAL = ((errno = ENOSYS), -1);
1601#endif
1602}
1603 OUTPUT:
1604 RETVAL
1605
1606int
1607munlockall ()
1608 CODE:
1609#if _POSIX_MEMLOCK
1610 munlockall ();
1611#else
1612 RETVAL = -1;
1613 errno = ENOSYS;
1614#endif
1615 OUTPUT:
1616 RETVAL
1617
1618void _on_next_submit (SV *cb)
1619 CODE:
1620 SvREFCNT_dec (on_next_submit);
1621 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1622
1623PROTOTYPES: DISABLE
1624
1625MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1626
1627void
1628cancel (aio_req_ornot req)
1629 CODE:
1630 eio_cancel (req);
1631
1632void
1633cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1634 PPCODE:
1635{
1636 if (GIMME_V != G_VOID)
1637 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1638
1639 if (items > 1)
1640 {
1641 SV *cb_cv =get_cb (callback);
1642
1643 SvREFCNT_dec (req->callback);
1644 req->callback = SvREFCNT_inc (cb_cv);
1645 }
1646}
1647
1648MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1649
1650void
1651add (aio_req grp, ...)
1652 PPCODE:
1653{
1654 int i;
1655
1656 if (grp->int1 == 2)
1657 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1658
1659 for (i = 1; i < items; ++i )
1660 {
1661 aio_req req;
1662
1663 if (GIMME_V != G_VOID)
1664 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1665
1666 req = SvAIO_REQ (ST (i));
1667
1668 if (req)
1669 eio_grp_add (grp, req);
1670 }
1671}
1672
1673void
1674cancel_subs (aio_req_ornot req)
1675 CODE:
1676 req_cancel_subs (req);
1677
1678void
1679result (aio_req grp, ...)
1680 CODE:
1681{
1682 int i;
1683 AV *av;
1684
1685 grp->errorno = errno;
1686
1687 av = newAV ();
1688 av_extend (av, items - 1);
1689
1690 for (i = 1; i < items; ++i )
1691 av_push (av, newSVsv (ST (i)));
1692
1693 SvREFCNT_dec (grp->sv1);
1694 grp->sv1 = (SV *)av;
1695}
1696
1697void
1698errno (aio_req grp, int errorno = errno)
1699 CODE:
1700 grp->errorno = errorno;
1701
1702void
1703limit (aio_req grp, int limit)
1704 CODE:
1705 eio_grp_limit (grp, limit);
1706
1707void
1708feed (aio_req grp, SV *callback=&PL_sv_undef)
1709 CODE:
1710{
1711 SvREFCNT_dec (grp->sv2);
1712 grp->sv2 = newSVsv (callback);
1713 grp->feed = aio_grp_feed;
1714
1715 if (grp->int2 <= 0)
1716 grp->int2 = 2;
1717
1718 eio_grp_limit (grp, grp->int2);
1719}
1720

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