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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.17 by root, Sun Jul 31 18:45:48 2005 UTC vs.
Revision 1.177 by root, Thu Dec 30 07:19:31 2010 UTC

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

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