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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.19 by root, Sun Jul 31 19:04:45 2005 UTC vs.
Revision 1.179 by root, Fri Jan 7 21:47:15 2011 UTC

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

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