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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.21 by root, Sun Aug 7 03:26:10 2005 UTC vs.
Revision 1.173 by root, Mon Sep 13 01:59:05 2010 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_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/eio.h"
124
125#ifndef POSIX_FADV_NORMAL
126# define POSIX_FADV_NORMAL 0
127# define NO_FADVISE 1
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 _XOPEN_SOURCE < 600 || NO_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# define NO_MADVISE 1
152#endif
153#ifndef POSIX_MADV_SEQUENTIAL
154# define POSIX_MADV_SEQUENTIAL 0
155#endif
156#ifndef POSIX_MADV_RANDOM
157# define POSIX_MADV_RANDOM 0
158#endif
159#ifndef POSIX_MADV_WILLNEED
160# define POSIX_MADV_WILLNEED 0
161#endif
162#ifndef POSIX_MADV_DONTNEED
163# define POSIX_MADV_DONTNEED 0
164#endif
165
166#if _XOPEN_SOURCE < 600 || NO_MADVISE
167# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
168#endif
169
170#ifndef PROT_NONE
171# define PROT_NONE 0
172#endif
173#ifndef PROT_READ
174# define PROT_READ 0
175#endif
176#ifndef PROT_WRITE
177# define PROT_READ 0
178#endif
179#ifndef PROT_EXEC
180# define PROT_EXEC 0
181#endif
182
183#ifndef ST_NODEV
184# define ST_NODEV 0
185#endif
186#ifndef ST_NOEXEC
187# define ST_NOEXEC 0
188#endif
189#ifndef ST_SYNCHRONOUS
190# define ST_SYNCHRONOUS 0
191#endif
192#ifndef ST_MANDLOCK
193# define ST_MANDLOCK 0
194#endif
195#ifndef ST_WRITE
196# define ST_WRITE 0
197#endif
198#ifndef ST_APPEND
199# define ST_APPEND 0
200#endif
201#ifndef ST_IMMUTABLE
202# define ST_IMMUTABLE 0
203#endif
204#ifndef ST_NOATIME
205# define ST_NOATIME 0
206#endif
207#ifndef ST_NODIRATIME
208# define ST_NODIRATIME 0
209#endif
210#ifndef ST_RELATIME
211# define ST_RELATIME 0
212#endif
213
214#ifndef MAP_ANONYMOUS
215# ifdef MAP_ANON
216# define MAP_ANONYMOUS MAP_ANON
217# else
218# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
28#endif 219# endif
220#endif
221#ifndef MAP_HUGETLB
222# define MAP_HUGETLB 0
223#endif
224#ifndef MAP_LOCKED
225# define MAP_LOCKED 0
226#endif
227#ifndef MAP_NORESERVE
228# define MAP_NORESERVE 0
229#endif
230#ifndef MAP_POPULATE
231# define MAP_POPULATE 0
232#endif
233#ifndef MAP_NONBLOCK
234# define MAP_NONBLOCK 0
235#endif
236
237#ifndef PAGESIZE
238# define PAGESIZE sysconf (_SC_PAGESIZE)
239#endif
240
241static int req_invoke (eio_req *req);
242#define EIO_FINISH(req) req_invoke (req)
243static void req_destroy (eio_req *grp);
244#define EIO_DESTROY(req) req_destroy (req)
29 245
30enum { 246enum {
31 REQ_QUIT, 247 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, REQ_UNLINK,
35 REQ_FSYNC, REQ_FDATASYNC,
36}; 248};
37 249
38typedef struct aio_cb { 250#include "libeio/eio.c"
39 struct aio_cb *volatile next;
40 251
41 int type;
42
43 int fd;
44 off_t offset;
45 size_t length;
46 ssize_t result;
47 mode_t mode; /* open */
48 int errorno;
49 SV *data, *callback, *fh;
50 void *dataptr;
51 STRLEN dataoffset;
52
53 Stat_t *statdata;
54} aio_cb;
55
56typedef aio_cb *aio_req; 252typedef eio_req *aio_req;
253typedef eio_req *aio_req_ornot;
57 254
58static int started; 255static SV *on_next_submit;
59static volatile int nreqs; 256static int next_pri = EIO_PRI_DEFAULT;
60static int max_outstanding = 1<<30; 257static int max_outstanding;
61static int respipe [2];
62 258
63static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 259static s_epipe respipe;
64static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
65static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66 260
67static volatile aio_req reqs, reqe; /* queue start, queue end */ 261static void req_destroy (aio_req req);
68static volatile aio_req ress, rese; /* queue start, queue end */ 262static void req_cancel (aio_req req);
69 263
70static void 264static void want_poll (void)
71poll_wait ()
72{ 265{
73 if (nreqs && !ress) 266 /* write a dummy byte to the pipe so fh becomes ready */
267 s_epipe_signal (&respipe);
268}
269
270static void done_poll (void)
271{
272 /* read any signals sent by the worker threads */
273 s_epipe_drain (&respipe);
274}
275
276/* must be called at most once */
277static SV *req_sv (aio_req req, HV *stash)
278{
279 if (!req->self)
74 { 280 {
75 fd_set rfd; 281 req->self = (SV *)newHV ();
76 FD_ZERO(&rfd); 282 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
77 FD_SET(respipe [0], &rfd);
78
79 select (respipe [0] + 1, &rfd, 0, 0, 0);
80 } 283 }
81}
82 284
83static int 285 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
84poll_cb () 286}
85{
86 dSP;
87 int count = 0;
88 aio_req req, prv;
89 287
90 pthread_mutex_lock (&reslock); 288static aio_req SvAIO_REQ (SV *sv)
289{
290 MAGIC *mg;
91 291
92 { 292 if (!SvROK (sv)
93 /* read any signals sent by the worker threads */ 293 || (SvSTASH (SvRV (sv)) != aio_grp_stash
94 char buf [32]; 294 && SvSTASH (SvRV (sv)) != aio_req_stash
95 while (read (respipe [0], buf, 32) > 0) 295 && !sv_derived_from (sv, "IO::AIO::REQ")))
96 ; 296 croak ("object of class IO::AIO::REQ expected");
97 }
98 297
99 req = ress; 298 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
100 ress = rese = 0;
101 299
102 pthread_mutex_unlock (&reslock); 300 return mg ? (aio_req)mg->mg_ptr : 0;
301}
103 302
104 while (req) 303static void aio_grp_feed (aio_req grp)
304{
305 if (grp->sv2 && SvOK (grp->sv2))
105 { 306 {
106 nreqs--; 307 dSP;
107 308
108 if (req->type == REQ_QUIT) 309 ENTER;
109 started--; 310 SAVETMPS;
110 else 311 PUSHMARK (SP);
312 XPUSHs (req_sv (grp, aio_grp_stash));
313 PUTBACK;
314 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
315 SPAGAIN;
316 FREETMPS;
317 LEAVE;
318 }
319}
320
321static void req_submit (eio_req *req)
322{
323 eio_submit (req);
324
325 if (expect_false (on_next_submit))
326 {
327 dSP;
328 SV *cb = sv_2mortal (on_next_submit);
329
330 on_next_submit = 0;
331
332 PUSHMARK (SP);
333 PUTBACK;
334 call_sv (cb, G_DISCARD | G_EVAL);
335 }
336}
337
338static int req_invoke (eio_req *req)
339{
340 if (req->flags & FLAG_SV2_RO_OFF)
341 SvREADONLY_off (req->sv2);
342
343 if (!EIO_CANCELLED (req) && req->callback)
344 {
345 dSP;
346 static SV *sv_result_cache; /* caches the result integer SV */
347 SV *sv_result;
348
349 ENTER;
350 SAVETMPS;
351 PUSHMARK (SP);
352 EXTEND (SP, 1);
353
354 /* do not recreate the result IV from scratch each time */
355 if (expect_true (sv_result_cache))
111 { 356 {
112 int errorno = errno; 357 sv_result = sv_result_cache; sv_result_cache = 0;
113 errno = req->errorno; 358 SvIV_set (sv_result, req->result);
114
115 if (req->type == REQ_READ)
116 SvCUR_set (req->data, req->dataoffset
117 + req->result > 0 ? req->result : 0);
118
119 if (req->data)
120 SvREFCNT_dec (req->data);
121
122 if (req->fh)
123 SvREFCNT_dec (req->fh);
124
125 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
126 {
127 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
128 PL_laststatval = req->result;
129 PL_statcache = *(req->statdata);
130
131 Safefree (req->statdata);
132 }
133
134 ENTER;
135 PUSHMARK (SP);
136 XPUSHs (sv_2mortal (newSViv (req->result)));
137
138 if (req->type == REQ_OPEN)
139 {
140 /* convert fd to fh */
141 SV *fh;
142
143 PUTBACK;
144 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
145 SPAGAIN;
146
147 fh = SvREFCNT_inc (POPs);
148
149 PUSHMARK (SP);
150 XPUSHs (sv_2mortal (fh));
151 }
152
153 if (SvOK (req->callback))
154 {
155 PUTBACK;
156 call_sv (req->callback, G_VOID | G_EVAL);
157 SPAGAIN;
158 }
159
160 LEAVE;
161
162 if (req->callback)
163 SvREFCNT_dec (req->callback);
164
165 errno = errorno;
166 count++;
167 }
168
169 prv = req;
170 req = req->next;
171 Safefree (prv);
172
173 /* TODO: croak on errors? */
174 }
175
176 return count;
177}
178
179static void *aio_proc(void *arg);
180
181static void
182start_thread (void)
183{
184 sigset_t fullsigset, oldsigset;
185 pthread_t tid;
186 pthread_attr_t attr;
187
188 pthread_attr_init (&attr);
189 pthread_attr_setstacksize (&attr, STACKSIZE);
190 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
191
192 sigfillset (&fullsigset);
193 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
194
195 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
196 started++;
197
198 sigprocmask (SIG_SETMASK, &oldsigset, 0);
199}
200
201static void
202send_req (aio_req req)
203{
204 nreqs++;
205
206 pthread_mutex_lock (&reqlock);
207
208 req->next = 0;
209
210 if (reqe)
211 {
212 reqe->next = req;
213 reqe = req;
214 }
215 else
216 reqe = reqs = req;
217
218 pthread_cond_signal (&reqwait);
219 pthread_mutex_unlock (&reqlock);
220
221 while (nreqs > max_outstanding)
222 {
223 poll_wait ();
224 poll_cb ();
225 }
226}
227
228static void
229end_thread (void)
230{
231 aio_req req;
232 New (0, req, 1, aio_cb);
233 req->type = REQ_QUIT;
234
235 send_req (req);
236}
237
238/* work around various missing functions */
239
240#if !HAVE_PREADWRITE
241# define pread aio_pread
242# define pwrite aio_pwrite
243
244/*
245 * make our pread/pwrite safe against themselves, but not against
246 * normal read/write by using a mutex. slows down execution a lot,
247 * but that's your problem, not mine.
248 */
249static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
250
251static ssize_t
252pread (int fd, void *buf, size_t count, off_t offset)
253{
254 ssize_t res;
255 off_t ooffset;
256
257 pthread_mutex_lock (&iolock);
258 ooffset = lseek (fd, 0, SEEK_CUR);
259 lseek (fd, offset, SEEK_SET);
260 res = read (fd, buf, count);
261 lseek (fd, ooffset, SEEK_SET);
262 pthread_mutex_unlock (&iolock);
263
264 return res;
265}
266
267static ssize_t
268pwrite (int fd, void *buf, size_t count, off_t offset)
269{
270 ssize_t res;
271 off_t ooffset;
272
273 pthread_mutex_lock (&iolock);
274 ooffset = lseek (fd, 0, SEEK_CUR);
275 lseek (fd, offset, SEEK_SET);
276 res = write (fd, buf, count);
277 lseek (fd, offset, SEEK_SET);
278 pthread_mutex_unlock (&iolock);
279
280 return res;
281}
282#endif
283
284#if !HAVE_FDATASYNC
285# define fdatasync fsync
286#endif
287
288#if !HAVE_READAHEAD
289# define readahead aio_readahead
290
291static char readahead_buf[4096];
292
293static ssize_t
294readahead (int fd, off_t offset, size_t count)
295{
296 while (count > 0)
297 {
298 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
299
300 pread (fd, readahead_buf, len, offset);
301 offset += len;
302 count -= len;
303 }
304
305 errno = 0;
306}
307#endif
308
309static void *
310aio_proc (void *thr_arg)
311{
312 aio_req req;
313 int type;
314
315 do
316 {
317 pthread_mutex_lock (&reqlock);
318
319 for (;;)
320 {
321 req = reqs;
322
323 if (reqs)
324 {
325 reqs = reqs->next;
326 if (!reqs) reqe = 0;
327 }
328
329 if (req)
330 break;
331
332 pthread_cond_wait (&reqwait, &reqlock);
333 }
334
335 pthread_mutex_unlock (&reqlock);
336
337 errno = 0; /* strictly unnecessary */
338
339 type = req->type;
340
341 switch (type)
342 {
343 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
344 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
345
346 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
347
348 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
349 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
350 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
351
352 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
353 case REQ_CLOSE: req->result = close (req->fd); break;
354 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
355
356 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
357 case REQ_FSYNC: req->result = fsync (req->fd); break;
358
359 case REQ_QUIT:
360 break;
361
362 default:
363 req->result = ENOSYS;
364 break;
365 }
366
367 req->errorno = errno;
368
369 pthread_mutex_lock (&reslock);
370
371 req->next = 0;
372
373 if (rese)
374 {
375 rese->next = req;
376 rese = req;
377 } 359 }
378 else 360 else
379 { 361 {
380 rese = ress = req; 362 sv_result = newSViv (req->result);
381 363 SvREADONLY_on (sv_result);
382 /* write a dummy byte to the pipe so fh becomes ready */
383 write (respipe [1], &respipe, 1);
384 } 364 }
385 365
386 pthread_mutex_unlock (&reslock); 366 switch (req->type)
367 {
368 case EIO_READDIR:
369 {
370 SV *rv = &PL_sv_undef;
371
372 if (req->result >= 0)
373 {
374 int i;
375 char *names = (char *)req->ptr2;
376 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
377 AV *av = newAV ();
378
379 av_extend (av, req->result - 1);
380
381 for (i = 0; i < req->result; ++i)
382 {
383 if (req->int1 & EIO_READDIR_DENTS)
384 {
385 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
386
387 if (req->int1 & EIO_READDIR_CUSTOM2)
388 {
389 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
390 AV *avent = newAV ();
391
392 av_extend (avent, 2);
393
394 if (!sv_type [ent->type])
395 {
396 sv_type [ent->type] = newSViv (ent->type);
397 SvREADONLY_on (sv_type [ent->type]);
398 }
399
400 av_store (avent, 0, namesv);
401 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
402 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
403
404 av_store (av, i, newRV_noinc ((SV *)avent));
405 }
406 else
407 av_store (av, i, namesv);
408
409 ++ent;
410 }
411 else
412 {
413 SV *name = newSVpv (names, 0);
414 av_store (av, i, name);
415 names += SvCUR (name) + 1;
416 }
417 }
418
419 rv = sv_2mortal (newRV_noinc ((SV *)av));
420 }
421
422 PUSHs (rv);
423
424 if (req->int1 & EIO_READDIR_CUSTOM1)
425 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
426 }
427 break;
428
429 case EIO_OPEN:
430 {
431 /* convert fd to fh */
432 SV *fh = &PL_sv_undef;
433
434 if (req->result >= 0)
435 {
436 GV *gv = (GV *)sv_newmortal ();
437 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
438 char sym [64];
439 int symlen;
440
441 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
442 gv_init (gv, aio_stash, sym, symlen, 0);
443
444 symlen = snprintf (
445 sym,
446 sizeof (sym),
447 "%s&=%d",
448 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
449 (int)req->result
450 );
451
452 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
453 fh = (SV *)gv;
454 }
455
456 PUSHs (fh);
457 }
458 break;
459
460 case EIO_STATVFS:
461 case EIO_FSTATVFS:
462 {
463 SV *rv = &PL_sv_undef;
464
465 if (req->result >= 0)
466 {
467 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
468 HV *hv = newHV ();
469
470 rv = sv_2mortal (newRV_noinc ((SV *)hv));
471
472 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
473 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
474 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
475 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
476 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
477 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
478 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
479 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
480 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
481 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
482 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
483 }
484
485 PUSHs (rv);
486 }
487
488 break;
489
490 case EIO_GROUP:
491 req->int1 = 2; /* mark group as finished */
492
493 if (req->sv1)
494 {
495 int i;
496 AV *av = (AV *)req->sv1;
497
498 EXTEND (SP, AvFILL (av) + 1);
499 for (i = 0; i <= AvFILL (av); ++i)
500 PUSHs (*av_fetch (av, i, 0));
501 }
502 break;
503
504 case EIO_NOP:
505 case EIO_BUSY:
506 break;
507
508 case EIO_READLINK:
509 if (req->result > 0)
510 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
511 break;
512
513 case EIO_STAT:
514 case EIO_LSTAT:
515 case EIO_FSTAT:
516 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
517 PL_laststatval = req->result;
518 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
519 PUSHs (sv_result);
520 break;
521
522 case EIO_READ:
523 {
524 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
525 *SvEND (req->sv2) = 0;
526 SvPOK_only (req->sv2);
527 SvSETMAGIC (req->sv2);
528 PUSHs (sv_result);
529 }
530 break;
531
532 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
533 if (req->result > 0)
534 SvIV_set (sv_result, 0);
535 /* FALLTHROUGH */
536
537 default:
538 PUSHs (sv_result);
539 break;
540 }
541
542 errno = req->errorno;
543
544 PUTBACK;
545 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
546 SPAGAIN;
547
548 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
549 SvREFCNT_dec (sv_result);
550 else
551 sv_result_cache = sv_result;
552
553 FREETMPS;
554 LEAVE;
555
556 PUTBACK;
387 } 557 }
388 while (type != REQ_QUIT); 558
559 return !!SvTRUE (ERRSV);
560}
561
562static void req_destroy (aio_req req)
563{
564 if (req->self)
565 {
566 sv_unmagic (req->self, PERL_MAGIC_ext);
567 SvREFCNT_dec (req->self);
568 }
569
570 SvREFCNT_dec (req->sv1);
571 SvREFCNT_dec (req->sv2);
572 SvREFCNT_dec (req->callback);
573
574 Safefree (req);
575}
576
577static void req_cancel_subs (aio_req grp)
578{
579 aio_req sub;
580
581 if (grp->type != EIO_GROUP)
582 return;
583
584 SvREFCNT_dec (grp->sv2);
585 grp->sv2 = 0;
586
587 eio_grp_cancel (grp);
588}
589
590static void
591create_respipe (void)
592{
593 if (s_epipe_renew (&respipe))
594 croak ("IO::AIO: unable to initialize result pipe");
595}
596
597static void poll_wait (void)
598{
599 while (eio_nreqs ())
600 {
601 int size;
602
603 X_LOCK (reslock);
604 size = res_queue.size;
605 X_UNLOCK (reslock);
606
607 if (size)
608 return;
609
610 etp_maybe_start_thread ();
611
612 s_epipe_wait (&respipe);
613 }
614}
615
616static int poll_cb (void)
617{
618 for (;;)
619 {
620 int res = eio_poll ();
621
622 if (res > 0)
623 croak (0);
624
625 if (!max_outstanding || max_outstanding > eio_nreqs ())
626 return res;
627
628 poll_wait ();
629 }
630}
631
632static void atfork_child (void)
633{
634 create_respipe ();
635}
636
637/*****************************************************************************/
638
639#if !_POSIX_MAPPED_FILES
640# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
641# define munmap(addr,length) (errno = ENOSYS, -1)
642# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
643#endif
644
645#define MMAP_MAGIC PERL_MAGIC_ext
646
647static int
648mmap_free (pTHX_ SV *sv, MAGIC *mg)
649{
650 int old_errno = errno;
651 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
652 errno = old_errno;
653
654 mg->mg_obj = 0; /* just in case */
655
656 SvREADONLY_off (sv);
657
658 if (SvPVX (sv) != mg->mg_ptr)
659 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
660
661 SvCUR_set (sv, 0);
662 SvPVX (sv) = 0;
663 SvOK_off (sv);
389 664
390 return 0; 665 return 0;
391} 666}
392 667
668static MGVTBL mmap_vtbl = {
669 0, 0, 0, 0, mmap_free
670};
671
672/*****************************************************************************/
673
674static SV *
675get_cb (SV *cb_sv)
676{
677 SvGETMAGIC (cb_sv);
678 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
679}
680
681#define dREQ \
682 SV *cb_cv; \
683 aio_req req; \
684 int req_pri = next_pri; \
685 next_pri = EIO_PRI_DEFAULT; \
686 \
687 cb_cv = get_cb (callback); \
688 \
689 Newz (0, req, 1, eio_req); \
690 if (!req) \
691 croak ("out of memory during eio_req allocation"); \
692 \
693 req->callback = SvREFCNT_inc (cb_cv); \
694 req->pri = req_pri
695
696#define REQ_SEND \
697 PUTBACK; \
698 req_submit (req); \
699 SPAGAIN; \
700 \
701 if (GIMME_V != G_VOID) \
702 XPUSHs (req_sv (req, aio_req_stash));
703
393MODULE = IO::AIO PACKAGE = IO::AIO 704MODULE = IO::AIO PACKAGE = IO::AIO
394 705
395PROTOTYPES: ENABLE 706PROTOTYPES: ENABLE
396 707
397BOOT: 708BOOT:
398{ 709{
399 if (pipe (respipe)) 710 static const struct {
400 croak ("unable to initialize result pipe"); 711 const char *name;
712 IV iv;
713 } *civ, const_iv[] = {
714# define const_niv(name, value) { # name, (IV) value },
715# define const_iv(name) { # name, (IV) name },
716# define const_eio(name) { # name, (IV) EIO_ ## name },
717 const_iv (EXDEV)
718 const_iv (ENOSYS)
719 const_iv (O_RDONLY)
720 const_iv (O_WRONLY)
721 const_iv (O_RDWR)
722 const_iv (O_CREAT)
723 const_iv (O_TRUNC)
724 const_iv (O_EXCL)
725 const_iv (O_APPEND)
726#ifndef _WIN32
727 const_iv (S_IFIFO)
728#endif
729 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
730 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
731 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
732 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
733 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
734 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
401 735
402 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 736 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
403 croak ("cannot set result pipe to nonblocking mode"); 737 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
738 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
739 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
740 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
404 741
405 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 742 const_iv (ST_RDONLY)
406 croak ("cannot set result pipe to nonblocking mode"); 743 const_iv (ST_NOSUID)
407} 744 const_iv (ST_NODEV)
745 const_iv (ST_NOEXEC)
746 const_iv (ST_SYNCHRONOUS)
747 const_iv (ST_MANDLOCK)
748 const_iv (ST_WRITE)
749 const_iv (ST_APPEND)
750 const_iv (ST_IMMUTABLE)
751 const_iv (ST_NOATIME)
752 const_iv (ST_NODIRATIME)
753 const_iv (ST_RELATIME)
408 754
755 const_iv (PROT_NONE)
756 const_iv (PROT_EXEC)
757 const_iv (PROT_READ)
758 const_iv (PROT_WRITE)
759
760 /*const_iv (MAP_FIXED)*/
761 const_iv (MAP_PRIVATE)
762 const_iv (MAP_SHARED)
763 const_iv (MAP_ANONYMOUS)
764
765 /* linuxish */
766 const_iv (MAP_HUGETLB)
767 const_iv (MAP_LOCKED)
768 const_iv (MAP_NORESERVE)
769 const_iv (MAP_POPULATE)
770 const_iv (MAP_NONBLOCK)
771
772 const_eio (MCL_FUTURE)
773 const_eio (MCL_CURRENT)
774
775 const_eio (MS_ASYNC)
776 const_eio (MS_INVALIDATE)
777 const_eio (MS_SYNC)
778
779 const_eio (MT_MODIFY)
780
781 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
782 const_eio (SYNC_FILE_RANGE_WRITE)
783 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
784
785 const_eio (READDIR_DENTS)
786 const_eio (READDIR_DIRS_FIRST)
787 const_eio (READDIR_STAT_ORDER)
788 const_eio (READDIR_FOUND_UNKNOWN)
789
790 const_eio (DT_UNKNOWN)
791 const_eio (DT_FIFO)
792 const_eio (DT_CHR)
793 const_eio (DT_DIR)
794 const_eio (DT_BLK)
795 const_eio (DT_REG)
796 const_eio (DT_LNK)
797 const_eio (DT_SOCK)
798 const_eio (DT_WHT)
799 };
800
801 aio_stash = gv_stashpv ("IO::AIO" , 1);
802 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
803 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
804
805 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
806 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
807
808 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
809
810 create_respipe ();
811
812 if (eio_init (want_poll, done_poll) < 0)
813 croak ("IO::AIO: unable to initialise eio library");
814
815 /* atfork child called in fifo order, so before eio's handler */
816 X_THREAD_ATFORK (0, 0, atfork_child);
817}
818
409void 819void
410min_parallel(nthreads) 820max_poll_reqs (int nreqs)
411 int nthreads
412 PROTOTYPE: $ 821 PROTOTYPE: $
413 CODE: 822 CODE:
414 while (nthreads > started) 823 eio_set_max_poll_reqs (nreqs);
415 start_thread ();
416 824
417void 825void
418max_parallel(nthreads) 826max_poll_time (double nseconds)
419 int nthreads
420 PROTOTYPE: $ 827 PROTOTYPE: $
421 CODE: 828 CODE:
829 eio_set_max_poll_time (nseconds);
830
831void
832min_parallel (int nthreads)
833 PROTOTYPE: $
834 CODE:
835 eio_set_min_parallel (nthreads);
836
837void
838max_parallel (int nthreads)
839 PROTOTYPE: $
840 CODE:
841 eio_set_max_parallel (nthreads);
842
843void
844max_idle (int nthreads)
845 PROTOTYPE: $
846 CODE:
847 eio_set_max_idle (nthreads);
848
849void
850max_outstanding (int maxreqs)
851 PROTOTYPE: $
852 CODE:
853 max_outstanding = maxreqs;
854
855void
856aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
857 PPCODE:
422{ 858{
423 int cur = started; 859 dREQ;
424 while (cur > nthreads) 860
425 { 861 req->type = EIO_OPEN;
426 end_thread (); 862 req->sv1 = newSVsv (pathname);
427 cur--; 863 req->ptr1 = SvPVbyte_nolen (req->sv1);
864 req->int1 = flags;
865 req->int2 = mode;
866
867 REQ_SEND;
868}
869
870void
871aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
872 ALIAS:
873 aio_fsync = EIO_FSYNC
874 aio_fdatasync = EIO_FDATASYNC
875 PPCODE:
876{
877 int fd = s_fileno_croak (fh, 0);
878 dREQ;
879
880 req->type = ix;
881 req->sv1 = newSVsv (fh);
882 req->int1 = fd;
883
884 REQ_SEND (req);
885}
886
887void
888aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
889 PPCODE:
890{
891 int fd = s_fileno_croak (fh, 0);
892 dREQ;
893
894 req->type = EIO_SYNC_FILE_RANGE;
895 req->sv1 = newSVsv (fh);
896 req->int1 = fd;
897 req->offs = offset;
898 req->size = nbytes;
899 req->int2 = flags;
900
901 REQ_SEND (req);
902}
903
904void
905aio_close (SV *fh, SV *callback=&PL_sv_undef)
906 PPCODE:
907{
908 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
909 int fd = s_fileno_croak (fh, 0);
910 dREQ;
911
912 if (close_pipe < 0)
913 {
914 int pipefd [2];
915
916 if (pipe (pipefd) < 0
917 || close (pipefd [1]) < 0
918 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
919 abort (); /*D*/
920
921 close_pipe = pipefd [0];
428 } 922 }
429 923
430 while (started > nthreads) 924 req->type = EIO_DUP2;
925 req->int1 = close_pipe;
926 req->sv2 = newSVsv (fh);
927 req->int2 = fd;
928
929 REQ_SEND (req);
930}
931
932void
933aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
934 ALIAS:
935 aio_read = EIO_READ
936 aio_write = EIO_WRITE
937 PPCODE:
938{
939 STRLEN svlen;
940 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
941 char *svptr = SvPVbyte (data, svlen);
942 UV len = SvUV (length);
943
944 if (dataoffset < 0)
945 dataoffset += svlen;
946
947 if (dataoffset < 0 || dataoffset > svlen)
948 croak ("dataoffset outside of data scalar");
949
950 if (ix == EIO_WRITE)
951 {
952 /* write: check length and adjust. */
953 if (!SvOK (length) || len + dataoffset > svlen)
954 len = svlen - dataoffset;
955 }
956 else
957 {
958 /* read: check type and grow scalar as necessary */
959 SvUPGRADE (data, SVt_PV);
960 svptr = SvGROW (data, len + dataoffset + 1);
961 }
962
963 {
964 dREQ;
965
966 req->type = ix;
967 req->sv1 = newSVsv (fh);
968 req->int1 = fd;
969 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
970 req->size = len;
971 req->sv2 = SvREFCNT_inc (data);
972 req->ptr2 = (char *)svptr + dataoffset;
973 req->stroffset = dataoffset;
974
975 if (!SvREADONLY (data))
976 {
977 SvREADONLY_on (data);
978 req->flags |= FLAG_SV2_RO_OFF;
979 }
980
981 REQ_SEND;
982 }
983}
984
985void
986aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
987 PPCODE:
988{
989 SV *data;
990 dREQ;
991
992 req->type = EIO_READLINK;
993 req->sv1 = newSVsv (path);
994 req->ptr1 = SvPVbyte_nolen (req->sv1);
995
996 REQ_SEND;
997}
998
999void
1000aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1001 PPCODE:
1002{
1003 int ifd = s_fileno_croak (in_fh , 0);
1004 int ofd = s_fileno_croak (out_fh, 1);
1005 dREQ;
1006
1007 req->type = EIO_SENDFILE;
1008 req->sv1 = newSVsv (out_fh);
1009 req->int1 = ofd;
1010 req->sv2 = newSVsv (in_fh);
1011 req->int2 = ifd;
1012 req->offs = in_offset;
1013 req->size = length;
1014
1015 REQ_SEND;
1016}
1017
1018void
1019aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1020 PPCODE:
1021{
1022 int fd = s_fileno_croak (fh, 0);
1023 dREQ;
1024
1025 req->type = EIO_READAHEAD;
1026 req->sv1 = newSVsv (fh);
1027 req->int1 = fd;
1028 req->offs = offset;
1029 req->size = length;
1030
1031 REQ_SEND;
1032}
1033
1034void
1035aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1036 ALIAS:
1037 aio_stat = EIO_STAT
1038 aio_lstat = EIO_LSTAT
1039 aio_statvfs = EIO_STATVFS
1040 PPCODE:
1041{
1042 dREQ;
1043
1044 req->sv1 = newSVsv (fh_or_path);
1045
1046 if (SvPOK (req->sv1))
1047 {
1048 req->type = ix;
1049 req->ptr1 = SvPVbyte_nolen (req->sv1);
1050 }
1051 else
1052 {
1053 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1054 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1055 }
1056
1057 REQ_SEND;
1058}
1059
1060void
1061aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1062 PPCODE:
1063{
1064 dREQ;
1065
1066 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1067 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1068 req->sv1 = newSVsv (fh_or_path);
1069
1070 if (SvPOK (req->sv1))
1071 {
1072 req->type = EIO_UTIME;
1073 req->ptr1 = SvPVbyte_nolen (req->sv1);
1074 }
1075 else
1076 {
1077 req->type = EIO_FUTIME;
1078 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1079 }
1080
1081 REQ_SEND;
1082}
1083
1084void
1085aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1086 PPCODE:
1087{
1088 dREQ;
1089
1090 req->sv1 = newSVsv (fh_or_path);
1091 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1092
1093 if (SvPOK (req->sv1))
1094 {
1095 req->type = EIO_TRUNCATE;
1096 req->ptr1 = SvPVbyte_nolen (req->sv1);
1097 }
1098 else
1099 {
1100 req->type = EIO_FTRUNCATE;
1101 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1102 }
1103
1104 REQ_SEND;
1105}
1106
1107void
1108aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1109 ALIAS:
1110 aio_chmod = EIO_CHMOD
1111 aio_mkdir = EIO_MKDIR
1112 PPCODE:
1113{
1114 dREQ;
1115
1116 req->int2 = mode;
1117 req->sv1 = newSVsv (fh_or_path);
1118
1119 if (SvPOK (req->sv1))
1120 {
1121 req->type = ix;
1122 req->ptr1 = SvPVbyte_nolen (req->sv1);
1123 }
1124 else
1125 {
1126 req->type = EIO_FCHMOD;
1127 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1128 }
1129
1130 REQ_SEND;
1131}
1132
1133void
1134aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1135 PPCODE:
1136{
1137 dREQ;
1138
1139 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1140 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1141 req->sv1 = newSVsv (fh_or_path);
1142
1143 if (SvPOK (req->sv1))
1144 {
1145 req->type = EIO_CHOWN;
1146 req->ptr1 = SvPVbyte_nolen (req->sv1);
1147 }
1148 else
1149 {
1150 req->type = EIO_FCHOWN;
1151 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1152 }
1153
1154 REQ_SEND;
1155}
1156
1157void
1158aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1159 PPCODE:
1160{
1161 dREQ;
1162
1163 req->type = EIO_READDIR;
1164 req->sv1 = newSVsv (pathname);
1165 req->ptr1 = SvPVbyte_nolen (req->sv1);
1166 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1167
1168 if (flags & EIO_READDIR_DENTS)
1169 req->int1 |= EIO_READDIR_CUSTOM2;
1170
1171 REQ_SEND;
1172}
1173
1174void
1175aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1176 ALIAS:
1177 aio_unlink = EIO_UNLINK
1178 aio_rmdir = EIO_RMDIR
1179 aio_readdir = EIO_READDIR
1180 PPCODE:
1181{
1182 dREQ;
1183
1184 req->type = ix;
1185 req->sv1 = newSVsv (pathname);
1186 req->ptr1 = SvPVbyte_nolen (req->sv1);
1187
1188 REQ_SEND;
1189}
1190
1191void
1192aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1193 ALIAS:
1194 aio_link = EIO_LINK
1195 aio_symlink = EIO_SYMLINK
1196 aio_rename = EIO_RENAME
1197 PPCODE:
1198{
1199 dREQ;
1200
1201 req->type = ix;
1202 req->sv1 = newSVsv (oldpath);
1203 req->ptr1 = SvPVbyte_nolen (req->sv1);
1204 req->sv2 = newSVsv (newpath);
1205 req->ptr2 = SvPVbyte_nolen (req->sv2);
1206
1207 REQ_SEND;
1208}
1209
1210void
1211aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1212 PPCODE:
1213{
1214 dREQ;
1215
1216 req->type = EIO_MKNOD;
1217 req->sv1 = newSVsv (pathname);
1218 req->ptr1 = SvPVbyte_nolen (req->sv1);
1219 req->int2 = (mode_t)mode;
1220 req->offs = dev;
1221
1222 REQ_SEND;
1223}
1224
1225void
1226aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1227 ALIAS:
1228 aio_mtouch = EIO_MTOUCH
1229 aio_msync = EIO_MSYNC
1230 PPCODE:
1231{
1232 STRLEN svlen;
1233 char *svptr = SvPVbyte (data, svlen);
1234 UV len = SvUV (length);
1235
1236 if (offset < 0)
1237 offset += svlen;
1238
1239 if (offset < 0 || offset > svlen)
1240 croak ("offset outside of scalar");
1241
1242 if (!SvOK (length) || len + offset > svlen)
1243 len = svlen - offset;
1244
1245 {
1246 dREQ;
1247
1248 req->type = ix;
1249 req->sv2 = SvREFCNT_inc (data);
1250 req->ptr2 = (char *)svptr + offset;
1251 req->size = len;
1252 req->int1 = flags;
1253
1254 REQ_SEND;
1255 }
1256}
1257
1258void
1259aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1260 PPCODE:
1261{
1262 STRLEN svlen;
1263 char *svptr = SvPVbyte (data, svlen);
1264 UV len = SvUV (length);
1265
1266 if (offset < 0)
1267 offset += svlen;
1268
1269 if (offset < 0 || offset > svlen)
1270 croak ("offset outside of scalar");
1271
1272 if (!SvOK (length) || len + offset > svlen)
1273 len = svlen - offset;
1274
1275 {
1276 dREQ;
1277
1278 req->type = EIO_MLOCK;
1279 req->sv2 = SvREFCNT_inc (data);
1280 req->ptr2 = (char *)svptr + offset;
1281 req->size = len;
1282
1283 REQ_SEND;
1284 }
1285}
1286
1287void
1288aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1289 PPCODE:
1290{
1291 dREQ;
1292
1293 req->type = EIO_MLOCKALL;
1294 req->int1 = flags;
1295
1296 REQ_SEND;
1297}
1298
1299void
1300aio_busy (double delay, SV *callback=&PL_sv_undef)
1301 PPCODE:
1302{
1303 dREQ;
1304
1305 req->type = EIO_BUSY;
1306 req->nv1 = delay < 0. ? 0. : delay;
1307
1308 REQ_SEND;
1309}
1310
1311void
1312aio_group (SV *callback=&PL_sv_undef)
1313 PPCODE:
1314{
1315 dREQ;
1316
1317 req->type = EIO_GROUP;
1318
1319 req_submit (req);
1320 XPUSHs (req_sv (req, aio_grp_stash));
1321}
1322
1323void
1324aio_nop (SV *callback=&PL_sv_undef)
1325 ALIAS:
1326 aio_nop = EIO_NOP
1327 aio_sync = EIO_SYNC
1328 PPCODE:
1329{
1330 dREQ;
1331
1332 req->type = ix;
1333
1334 REQ_SEND;
1335}
1336
1337int
1338aioreq_pri (int pri = 0)
1339 CODE:
1340 RETVAL = next_pri;
1341 if (items > 0)
1342 {
1343 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1344 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1345 next_pri = pri;
1346 }
1347 OUTPUT:
1348 RETVAL
1349
1350void
1351aioreq_nice (int nice = 0)
1352 CODE:
1353 nice = next_pri - nice;
1354 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1355 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1356 next_pri = nice;
1357
1358void
1359flush ()
1360 CODE:
1361 while (eio_nreqs ())
431 { 1362 {
432 poll_wait (); 1363 poll_wait ();
433 poll_cb (); 1364 poll_cb ();
434 } 1365 }
435}
436 1366
437int 1367int
438max_outstanding(nreqs) 1368poll ()
439 int nreqs
440 PROTOTYPE: $
441 CODE:
442 RETVAL = max_outstanding;
443 max_outstanding = nreqs;
444
445void
446aio_open(pathname,flags,mode,callback=&PL_sv_undef)
447 SV * pathname
448 int flags
449 int mode
450 SV * callback
451 PROTOTYPE: $$$;$
452 CODE: 1369 CODE:
453{
454 aio_req req;
455
456 Newz (0, req, 1, aio_cb);
457
458 if (!req)
459 croak ("out of memory during aio_req allocation");
460
461 req->type = REQ_OPEN;
462 req->data = newSVsv (pathname);
463 req->dataptr = SvPV_nolen (req->data);
464 req->fd = flags;
465 req->mode = mode;
466 req->callback = SvREFCNT_inc (callback);
467
468 send_req (req);
469}
470
471void
472aio_close(fh,callback=&PL_sv_undef)
473 SV * fh
474 SV * callback
475 PROTOTYPE: $;$
476 ALIAS:
477 aio_close = REQ_CLOSE
478 aio_fsync = REQ_FSYNC
479 aio_fdatasync = REQ_FDATASYNC
480 CODE:
481{
482 aio_req req;
483
484 Newz (0, req, 1, aio_cb);
485
486 if (!req)
487 croak ("out of memory during aio_req allocation");
488
489 req->type = ix;
490 req->fh = newSVsv (fh);
491 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
492 req->callback = SvREFCNT_inc (callback);
493
494 send_req (req);
495}
496
497void
498aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
499 SV * fh
500 UV offset
501 IV length
502 SV * data
503 IV dataoffset
504 SV * callback
505 ALIAS:
506 aio_read = REQ_READ
507 aio_write = REQ_WRITE
508 PROTOTYPE: $$$$$;$
509 CODE:
510{
511 aio_req req;
512 STRLEN svlen;
513 char *svptr = SvPVbyte (data, svlen);
514
515 SvUPGRADE (data, SVt_PV);
516 SvPOK_on (data);
517
518 if (dataoffset < 0)
519 dataoffset += svlen;
520
521 if (dataoffset < 0 || dataoffset > svlen)
522 croak ("data offset outside of string");
523
524 if (ix == REQ_WRITE)
525 {
526 /* write: check length and adjust. */
527 if (length < 0 || length + dataoffset > svlen)
528 length = svlen - dataoffset;
529 }
530 else
531 {
532 /* read: grow scalar as necessary */
533 svptr = SvGROW (data, length + dataoffset);
534 }
535
536 if (length < 0)
537 croak ("length must not be negative");
538
539 Newz (0, req, 1, aio_cb);
540
541 if (!req)
542 croak ("out of memory during aio_req allocation");
543
544 req->type = ix;
545 req->fh = newSVsv (fh);
546 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
547 : IoOFP (sv_2io (fh)));
548 req->offset = offset;
549 req->length = length;
550 req->data = SvREFCNT_inc (data);
551 req->dataptr = (char *)svptr + dataoffset;
552 req->callback = SvREFCNT_inc (callback);
553
554 send_req (req);
555}
556
557void
558aio_readahead(fh,offset,length,callback=&PL_sv_undef)
559 SV * fh
560 UV offset
561 IV length
562 SV * callback
563 PROTOTYPE: $$$;$
564 CODE:
565{
566 aio_req req;
567
568 if (length < 0)
569 croak ("length must not be negative");
570
571 Newz (0, req, 1, aio_cb);
572
573 if (!req)
574 croak ("out of memory during aio_req allocation");
575
576 req->type = REQ_READAHEAD;
577 req->fh = newSVsv (fh);
578 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
579 req->offset = offset;
580 req->length = length;
581 req->callback = SvREFCNT_inc (callback);
582
583 send_req (req);
584}
585
586void
587aio_stat(fh_or_path,callback=&PL_sv_undef)
588 SV * fh_or_path
589 SV * callback
590 ALIAS:
591 aio_stat = REQ_STAT
592 aio_lstat = REQ_LSTAT
593 CODE:
594{
595 aio_req req;
596
597 Newz (0, req, 1, aio_cb);
598
599 if (!req)
600 croak ("out of memory during aio_req allocation");
601
602 New (0, req->statdata, 1, Stat_t);
603
604 if (!req->statdata)
605 croak ("out of memory during aio_req->statdata allocation");
606
607 if (SvPOK (fh_or_path))
608 {
609 req->type = ix;
610 req->data = newSVsv (fh_or_path);
611 req->dataptr = SvPV_nolen (req->data);
612 }
613 else
614 {
615 req->type = REQ_FSTAT;
616 req->fh = newSVsv (fh_or_path);
617 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
618 }
619
620 req->callback = SvREFCNT_inc (callback);
621
622 send_req (req);
623}
624
625void
626aio_unlink(pathname,callback=&PL_sv_undef)
627 SV * pathname
628 SV * callback
629 CODE:
630{
631 aio_req req;
632
633 Newz (0, req, 1, aio_cb);
634
635 if (!req)
636 croak ("out of memory during aio_req allocation");
637
638 req->type = REQ_UNLINK;
639 req->data = newSVsv (pathname);
640 req->dataptr = SvPV_nolen (req->data);
641 req->callback = SvREFCNT_inc (callback);
642
643 send_req (req);
644}
645
646void
647flush()
648 PROTOTYPE:
649 CODE:
650 while (nreqs)
651 {
652 poll_wait (); 1370 poll_wait ();
653 poll_cb (); 1371 RETVAL = poll_cb ();
654 }
655
656void
657poll()
658 PROTOTYPE:
659 CODE:
660 if (nreqs)
661 {
662 poll_wait ();
663 poll_cb ();
664 }
665
666int
667poll_fileno()
668 PROTOTYPE:
669 CODE:
670 RETVAL = respipe [0];
671 OUTPUT: 1372 OUTPUT:
672 RETVAL 1373 RETVAL
673 1374
674int 1375int
1376poll_fileno ()
1377 CODE:
1378 RETVAL = s_epipe_fd (&respipe);
1379 OUTPUT:
1380 RETVAL
1381
1382int
675poll_cb(...) 1383poll_cb (...)
676 PROTOTYPE: 1384 PROTOTYPE:
677 CODE: 1385 CODE:
678 RETVAL = poll_cb (); 1386 RETVAL = poll_cb ();
679 OUTPUT: 1387 OUTPUT:
680 RETVAL 1388 RETVAL
681 1389
682void 1390void
683poll_wait() 1391poll_wait ()
684 PROTOTYPE:
685 CODE: 1392 CODE:
686 if (nreqs)
687 poll_wait (); 1393 poll_wait ();
688 1394
689int 1395int
690nreqs() 1396nreqs ()
691 PROTOTYPE:
692 CODE: 1397 CODE:
693 RETVAL = nreqs; 1398 RETVAL = eio_nreqs ();
694 OUTPUT: 1399 OUTPUT:
695 RETVAL 1400 RETVAL
696 1401
1402int
1403nready ()
1404 CODE:
1405 RETVAL = eio_nready ();
1406 OUTPUT:
1407 RETVAL
1408
1409int
1410npending ()
1411 CODE:
1412 RETVAL = eio_npending ();
1413 OUTPUT:
1414 RETVAL
1415
1416int
1417nthreads ()
1418 CODE:
1419 RETVAL = eio_nthreads ();
1420 OUTPUT:
1421 RETVAL
1422
1423int
1424fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1425 CODE:
1426 RETVAL = posix_fadvise (fh, offset, length, advice);
1427 OUTPUT:
1428 RETVAL
1429
1430ssize_t
1431sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1432 CODE:
1433 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1434 OUTPUT:
1435 RETVAL
1436
1437void
1438mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1439 PPCODE:
1440 sv_unmagic (scalar, MMAP_MAGIC);
1441{
1442 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1443 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1444 if (addr == (void *)-1)
1445 XSRETURN_NO;
1446
1447 sv_force_normal (scalar);
1448
1449 /* we store the length in mg_obj, as namlen is I32 :/ */
1450 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1451 ->mg_obj = (SV *)length;
1452
1453 SvUPGRADE (scalar, SVt_PV); /* nop... */
1454
1455 if (!(prot & PROT_WRITE))
1456 SvREADONLY_on (scalar);
1457
1458 if (SvLEN (scalar))
1459 Safefree (SvPVX (scalar));
1460
1461 SvPVX (scalar) = (char *)addr;
1462 SvCUR_set (scalar, length);
1463 SvLEN_set (scalar, 0);
1464 SvPOK_only (scalar);
1465
1466 XSRETURN_YES;
1467}
1468
1469void
1470munmap (SV *scalar)
1471 CODE:
1472 sv_unmagic (scalar, MMAP_MAGIC);
1473
1474int
1475madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1476 ALIAS:
1477 mprotect = 1
1478 CODE:
1479{
1480 STRLEN svlen;
1481 void *addr = SvPVbyte (scalar, svlen);
1482 size_t len = SvUV (length);
1483
1484 if (offset < 0)
1485 offset += svlen;
1486
1487 if (offset < 0 || offset > svlen)
1488 croak ("offset outside of scalar");
1489
1490 if (!SvOK (length) || len + offset > svlen)
1491 len = svlen - offset;
1492
1493 addr = (void *)(((intptr_t)addr) + offset);
1494 eio_page_align (&addr, &len);
1495
1496 switch (ix)
1497 {
1498 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1499 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1500 }
1501}
1502 OUTPUT:
1503 RETVAL
1504
1505int
1506munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1507 CODE:
1508{
1509 STRLEN svlen;
1510 void *addr = SvPVbyte (scalar, svlen);
1511 size_t len = SvUV (length);
1512
1513 if (offset < 0)
1514 offset += svlen;
1515
1516 if (offset < 0 || offset > svlen)
1517 croak ("offset outside of scalar");
1518
1519 if (!SvOK (length) || len + offset > svlen)
1520 len = svlen - offset;
1521
1522 addr = (void *)(((intptr_t)addr) + offset);
1523 eio_page_align (&addr, &len);
1524#if _POSIX_MEMLOCK
1525 RETVAL = munlock (addr, len);
1526#else
1527 RETVAL = ((errno = ENOSYS), -1);
1528#endif
1529}
1530 OUTPUT:
1531 RETVAL
1532
1533int
1534munlockall ()
1535 CODE:
1536#if _POSIX_MEMLOCK
1537 munlockall ();
1538#else
1539 RETVAL = -1;
1540 errno = ENOSYS;
1541#endif
1542 OUTPUT:
1543 RETVAL
1544
1545void _on_next_submit (SV *cb)
1546 CODE:
1547 SvREFCNT_dec (on_next_submit);
1548 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1549
1550PROTOTYPES: DISABLE
1551
1552MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1553
1554void
1555cancel (aio_req_ornot req)
1556 CODE:
1557 eio_cancel (req);
1558
1559void
1560cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1561 PPCODE:
1562{
1563 if (GIMME_V != G_VOID)
1564 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1565
1566 if (items > 1)
1567 {
1568 SV *cb_cv =get_cb (callback);
1569
1570 SvREFCNT_dec (req->callback);
1571 req->callback = SvREFCNT_inc (cb_cv);
1572 }
1573}
1574
1575MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1576
1577void
1578add (aio_req grp, ...)
1579 PPCODE:
1580{
1581 int i;
1582
1583 if (grp->int1 == 2)
1584 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1585
1586 for (i = 1; i < items; ++i )
1587 {
1588 aio_req req;
1589
1590 if (GIMME_V != G_VOID)
1591 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1592
1593 req = SvAIO_REQ (ST (i));
1594
1595 if (req)
1596 eio_grp_add (grp, req);
1597 }
1598}
1599
1600void
1601cancel_subs (aio_req_ornot req)
1602 CODE:
1603 req_cancel_subs (req);
1604
1605void
1606result (aio_req grp, ...)
1607 CODE:
1608{
1609 int i;
1610 AV *av;
1611
1612 grp->errorno = errno;
1613
1614 av = newAV ();
1615 av_extend (av, items - 1);
1616
1617 for (i = 1; i < items; ++i )
1618 av_push (av, newSVsv (ST (i)));
1619
1620 SvREFCNT_dec (grp->sv1);
1621 grp->sv1 = (SV *)av;
1622}
1623
1624void
1625errno (aio_req grp, int errorno = errno)
1626 CODE:
1627 grp->errorno = errorno;
1628
1629void
1630limit (aio_req grp, int limit)
1631 CODE:
1632 eio_grp_limit (grp, limit);
1633
1634void
1635feed (aio_req grp, SV *callback=&PL_sv_undef)
1636 CODE:
1637{
1638 SvREFCNT_dec (grp->sv2);
1639 grp->sv2 = newSVsv (callback);
1640 grp->feed = aio_grp_feed;
1641
1642 if (grp->int2 <= 0)
1643 grp->int2 = 2;
1644
1645 eio_grp_limit (grp, grp->int2);
1646}
1647

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