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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 1.184 by root, Tue Jul 5 20:34:42 2011 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_MEMLOCK_RANGE || _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/* Linux/others */
127#ifndef O_ASYNC
128# define O_ASYNC 0
129#endif
130#ifndef O_DIRECT
131# define O_DIRECT 0
132#endif
133#ifndef O_NOATIME
134# define O_NOATIME 0
135#endif
136
137/* POSIX */
138#ifndef O_CLOEXEC
139# define O_CLOEXEC 0
140#endif
141#ifndef O_NOFOLLOW
142# define O_NOFOLLOW 0
143#endif
144#ifndef O_NOCTTY
145# define O_NOCTTY 0
146#endif
147#ifndef O_NONBLOCK
148# define O_NONBLOCK 0
149#endif
150#ifndef O_EXEC
151# define O_EXEC 0
152#endif
153#ifndef O_SEARCH
154# define O_SEARCH 0
155#endif
156#ifndef O_DIRECTORY
157# define O_DIRECTORY 0
158#endif
159#ifndef O_DSYNC
160# define O_DSYNC 0
161#endif
162#ifndef O_RSYNC
163# define O_RSYNC 0
164#endif
165#ifndef O_SYNC
166# define O_SYNC 0
167#endif
168#ifndef O_TTY_INIT
169# define O_TTY_INIT 0
170#endif
171
172#ifndef POSIX_FADV_NORMAL
173# define POSIX_FADV_NORMAL 0
174#endif
175#ifndef POSIX_FADV_SEQUENTIAL
176# define POSIX_FADV_SEQUENTIAL 0
177#endif
178#ifndef POSIX_FADV_RANDOM
179# define POSIX_FADV_RANDOM 0
180#endif
181#ifndef POSIX_FADV_NOREUSE
182# define POSIX_FADV_NOREUSE 0
183#endif
184#ifndef POSIX_FADV_WILLNEED
185# define POSIX_FADV_WILLNEED 0
186#endif
187#ifndef POSIX_FADV_DONTNEED
188# define POSIX_FADV_DONTNEED 0
189#endif
190
191#if !HAVE_POSIX_FADVISE
192# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
193#endif
194
195#ifndef POSIX_MADV_NORMAL
196# define POSIX_MADV_NORMAL 0
197#endif
198#ifndef POSIX_MADV_SEQUENTIAL
199# define POSIX_MADV_SEQUENTIAL 0
200#endif
201#ifndef POSIX_MADV_RANDOM
202# define POSIX_MADV_RANDOM 0
203#endif
204#ifndef POSIX_MADV_WILLNEED
205# define POSIX_MADV_WILLNEED 0
206#endif
207#ifndef POSIX_MADV_DONTNEED
208# define POSIX_MADV_DONTNEED 0
209#endif
210
211#if !HAVE_POSIX_MADVISE
212# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
213#endif
214
215#ifndef PROT_NONE
216# define PROT_NONE 0
217#endif
218#ifndef PROT_READ
219# define PROT_READ 0
220#endif
221#ifndef PROT_WRITE
222# define PROT_READ 0
223#endif
224#ifndef PROT_EXEC
225# define PROT_EXEC 0
226#endif
227
228#ifndef ST_NODEV
229# define ST_NODEV 0
230#endif
231#ifndef ST_NOEXEC
232# define ST_NOEXEC 0
233#endif
234#ifndef ST_SYNCHRONOUS
235# define ST_SYNCHRONOUS 0
236#endif
237#ifndef ST_MANDLOCK
238# define ST_MANDLOCK 0
239#endif
240#ifndef ST_WRITE
241# define ST_WRITE 0
242#endif
243#ifndef ST_APPEND
244# define ST_APPEND 0
245#endif
246#ifndef ST_IMMUTABLE
247# define ST_IMMUTABLE 0
248#endif
249#ifndef ST_NOATIME
250# define ST_NOATIME 0
251#endif
252#ifndef ST_NODIRATIME
253# define ST_NODIRATIME 0
254#endif
255#ifndef ST_RELATIME
256# define ST_RELATIME 0
257#endif
258
259#ifndef S_IFIFO
260# define S_IFIFO 0
261#endif
262#ifndef S_IFCHR
263# define S_IFCHR 0
264#endif
265#ifndef S_IFBLK
266# define S_IFBLK 0
267#endif
268#ifndef S_IFLNK
269# define S_IFLNK 0
270#endif
271#ifndef S_IFREG
272# define S_IFREG 0
273#endif
274#ifndef S_IFDIR
275# define S_IFDIR 0
276#endif
277#ifndef S_IFWHT
278# define S_IFWHT 0
279#endif
280#ifndef S_IFSOCK
281# define S_IFSOCK 0
282#endif
283
284#ifndef MAP_ANONYMOUS
285# ifdef MAP_ANON
286# define MAP_ANONYMOUS MAP_ANON
287# else
288# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
25#endif 289# endif
290#endif
291#ifndef MAP_HUGETLB
292# define MAP_HUGETLB 0
293#endif
294#ifndef MAP_LOCKED
295# define MAP_LOCKED 0
296#endif
297#ifndef MAP_NORESERVE
298# define MAP_NORESERVE 0
299#endif
300#ifndef MAP_POPULATE
301# define MAP_POPULATE 0
302#endif
303#ifndef MAP_NONBLOCK
304# define MAP_NONBLOCK 0
305#endif
306
307#ifndef makedev
308# define makedev(maj,min) (((maj) << 8) | (min))
309#endif
310#ifndef major
311# define major(dev) ((dev) >> 8)
312#endif
313#ifndef minor
314# define minor(dev) ((dev) & 0xff)
315#endif
316
317#ifndef PAGESIZE
318# define PAGESIZE sysconf (_SC_PAGESIZE)
319#endif
320
321static int req_invoke (eio_req *req);
322#define EIO_FINISH(req) req_invoke (req)
323static void req_destroy (eio_req *grp);
324#define EIO_DESTROY(req) req_destroy (req)
26 325
27enum { 326enum {
28 REQ_QUIT, 327 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}; 328};
34 329
35typedef struct aio_cb { 330#include "libeio/eio.c"
36 struct aio_cb *volatile next;
37 331
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; 332typedef eio_req *aio_req;
333typedef eio_req *aio_req_ornot;
54 334
55static int started; 335static SV *on_next_submit;
56static volatile int nreqs; 336static int next_pri = EIO_PRI_DEFAULT;
57static int max_outstanding = 1<<30; 337static int max_outstanding;
58static int respipe [2];
59 338
60static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 339static s_epipe respipe;
61static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
62static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
63 340
64static volatile aio_req reqs, reqe; /* queue start, queue end */ 341static void req_destroy (aio_req req);
65static volatile aio_req ress, rese; /* queue start, queue end */ 342static void req_cancel (aio_req req);
66 343
67static void 344static void want_poll (void)
68poll_wait ()
69{ 345{
70 if (nreqs && !ress) 346 /* write a dummy byte to the pipe so fh becomes ready */
347 s_epipe_signal (&respipe);
348}
349
350static void done_poll (void)
351{
352 /* read any signals sent by the worker threads */
353 s_epipe_drain (&respipe);
354}
355
356/* must be called at most once */
357static SV *req_sv (aio_req req, HV *stash)
358{
359 if (!req->self)
71 { 360 {
72 fd_set rfd; 361 req->self = (SV *)newHV ();
73 FD_ZERO(&rfd); 362 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 } 363 }
78}
79 364
80static int 365 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
81poll_cb () 366}
82{
83 dSP;
84 int count = 0;
85 aio_req req, prv;
86 367
87 pthread_mutex_lock (&reslock); 368static aio_req SvAIO_REQ (SV *sv)
369{
370 MAGIC *mg;
88 371
89 { 372 if (!SvROK (sv)
90 /* read any signals sent by the worker threads */ 373 || (SvSTASH (SvRV (sv)) != aio_grp_stash
91 char buf [32]; 374 && SvSTASH (SvRV (sv)) != aio_req_stash
92 while (read (respipe [0], buf, 32) > 0) 375 && !sv_derived_from (sv, "IO::AIO::REQ")))
93 ; 376 croak ("object of class IO::AIO::REQ expected");
94 }
95 377
96 req = ress; 378 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
97 ress = rese = 0;
98 379
99 pthread_mutex_unlock (&reslock); 380 return mg ? (aio_req)mg->mg_ptr : 0;
381}
100 382
101 while (req) 383static void aio_grp_feed (aio_req grp)
384{
385 if (grp->sv2 && SvOK (grp->sv2))
102 { 386 {
103 nreqs--; 387 dSP;
104 388
105 if (req->type == REQ_QUIT) 389 ENTER;
106 started--; 390 SAVETMPS;
107 else 391 PUSHMARK (SP);
392 XPUSHs (req_sv (grp, aio_grp_stash));
393 PUTBACK;
394 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
395 SPAGAIN;
396 FREETMPS;
397 LEAVE;
398 }
399}
400
401static void req_submit (eio_req *req)
402{
403 eio_submit (req);
404
405 if (expect_false (on_next_submit))
406 {
407 dSP;
408 SV *cb = sv_2mortal (on_next_submit);
409
410 on_next_submit = 0;
411
412 PUSHMARK (SP);
413 PUTBACK;
414 call_sv (cb, G_DISCARD | G_EVAL);
415 }
416}
417
418static int req_invoke (eio_req *req)
419{
420 if (req->flags & FLAG_SV2_RO_OFF)
421 SvREADONLY_off (req->sv2);
422
423 if (!EIO_CANCELLED (req) && req->callback)
424 {
425 dSP;
426 static SV *sv_result_cache; /* caches the result integer SV */
427 SV *sv_result;
428
429 ENTER;
430 SAVETMPS;
431 PUSHMARK (SP);
432 EXTEND (SP, 1);
433
434 /* do not recreate the result IV from scratch each time */
435 if (expect_true (sv_result_cache))
108 { 436 {
109 int errorno = errno; 437 sv_result = sv_result_cache; sv_result_cache = 0;
110 errno = req->errorno; 438 SvIV_set (sv_result, req->result);
111 439 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 } 440 }
375 else 441 else
376 { 442 {
377 rese = ress = req; 443 sv_result = newSViv (req->result);
378 444 SvREADONLY_on (sv_result);
379 /* write a dummy byte to the pipe so fh becomes ready */
380 write (respipe [1], &respipe, 1);
381 } 445 }
382 446
383 pthread_mutex_unlock (&reslock); 447 switch (req->type)
448 {
449 case EIO_READDIR:
450 {
451 SV *rv = &PL_sv_undef;
452
453 if (req->result >= 0)
454 {
455 int i;
456 char *names = (char *)req->ptr2;
457 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
458 AV *av = newAV ();
459
460 av_extend (av, req->result - 1);
461
462 for (i = 0; i < req->result; ++i)
463 {
464 if (req->int1 & EIO_READDIR_DENTS)
465 {
466 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
467
468 if (req->int1 & EIO_READDIR_CUSTOM2)
469 {
470 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
471 AV *avent = newAV ();
472
473 av_extend (avent, 2);
474
475 if (!sv_type [ent->type])
476 {
477 sv_type [ent->type] = newSViv (ent->type);
478 SvREADONLY_on (sv_type [ent->type]);
479 }
480
481 av_store (avent, 0, namesv);
482 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
483 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
484
485 av_store (av, i, newRV_noinc ((SV *)avent));
486 }
487 else
488 av_store (av, i, namesv);
489
490 ++ent;
491 }
492 else
493 {
494 SV *name = newSVpv (names, 0);
495 av_store (av, i, name);
496 names += SvCUR (name) + 1;
497 }
498 }
499
500 rv = sv_2mortal (newRV_noinc ((SV *)av));
501 }
502
503 PUSHs (rv);
504
505 if (req->int1 & EIO_READDIR_CUSTOM1)
506 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
507 }
508 break;
509
510 case EIO_OPEN:
511 {
512 /* convert fd to fh */
513 SV *fh = &PL_sv_undef;
514
515 if (req->result >= 0)
516 {
517 GV *gv = (GV *)sv_newmortal ();
518 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
519 char sym [64];
520 int symlen;
521
522 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
523 gv_init (gv, aio_stash, sym, symlen, 0);
524
525 symlen = snprintf (
526 sym,
527 sizeof (sym),
528 "%s&=%d",
529 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
530 (int)req->result
531 );
532
533 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
534 fh = (SV *)gv;
535 }
536
537 PUSHs (fh);
538 }
539 break;
540
541 case EIO_STATVFS:
542 case EIO_FSTATVFS:
543 {
544 SV *rv = &PL_sv_undef;
545
546 if (req->result >= 0)
547 {
548 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
549 HV *hv = newHV ();
550
551 rv = sv_2mortal (newRV_noinc ((SV *)hv));
552
553 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
554 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
555 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
556 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
557 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
558 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
559 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
560 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
561 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
562 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
563 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
564 }
565
566 PUSHs (rv);
567 }
568
569 break;
570
571 case EIO_GROUP:
572 req->int1 = 2; /* mark group as finished */
573
574 if (req->sv1)
575 {
576 int i;
577 AV *av = (AV *)req->sv1;
578
579 EXTEND (SP, AvFILL (av) + 1);
580 for (i = 0; i <= AvFILL (av); ++i)
581 PUSHs (*av_fetch (av, i, 0));
582 }
583 break;
584
585 case EIO_NOP:
586 case EIO_BUSY:
587 break;
588
589 case EIO_READLINK:
590 case EIO_REALPATH:
591 if (req->result > 0)
592 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
593 break;
594
595 case EIO_STAT:
596 case EIO_LSTAT:
597 case EIO_FSTAT:
598 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
599 PL_laststatval = req->result;
600 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
601 PUSHs (sv_result);
602 break;
603
604 case EIO_READ:
605 {
606 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
607 *SvEND (req->sv2) = 0;
608 SvPOK_only (req->sv2);
609 SvSETMAGIC (req->sv2);
610 PUSHs (sv_result);
611 }
612 break;
613
614 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
615 if (req->result > 0)
616 SvIV_set (sv_result, 0);
617 /* FALLTHROUGH */
618
619 default:
620 PUSHs (sv_result);
621 break;
622 }
623
624 errno = req->errorno;
625
626 PUTBACK;
627 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
628 SPAGAIN;
629
630 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
631 SvREFCNT_dec (sv_result);
632 else
633 sv_result_cache = sv_result;
634
635 FREETMPS;
636 LEAVE;
637
638 PUTBACK;
384 } 639 }
385 while (type != REQ_QUIT); 640
641 return !!SvTRUE (ERRSV);
642}
643
644static void req_destroy (aio_req req)
645{
646 if (req->self)
647 {
648 sv_unmagic (req->self, PERL_MAGIC_ext);
649 SvREFCNT_dec (req->self);
650 }
651
652 SvREFCNT_dec (req->sv1);
653 SvREFCNT_dec (req->sv2);
654 SvREFCNT_dec (req->callback);
655
656 Safefree (req);
657}
658
659static void req_cancel_subs (aio_req grp)
660{
661 aio_req sub;
662
663 if (grp->type != EIO_GROUP)
664 return;
665
666 SvREFCNT_dec (grp->sv2);
667 grp->sv2 = 0;
668
669 eio_grp_cancel (grp);
670}
671
672static void create_respipe (void)
673{
674 if (s_epipe_renew (&respipe))
675 croak ("IO::AIO: unable to initialize result pipe");
676}
677
678static void poll_wait (void)
679{
680 while (eio_nreqs ())
681 {
682 int size;
683
684 X_LOCK (reslock);
685 size = res_queue.size;
686 X_UNLOCK (reslock);
687
688 if (size)
689 return;
690
691 etp_maybe_start_thread ();
692
693 s_epipe_wait (&respipe);
694 }
695}
696
697static int poll_cb (void)
698{
699 for (;;)
700 {
701 int res = eio_poll ();
702
703 if (res > 0)
704 croak (0);
705
706 if (!max_outstanding || max_outstanding > eio_nreqs ())
707 return res;
708
709 poll_wait ();
710 }
711}
712
713static void atfork_child (void)
714{
715 create_respipe ();
716}
717
718/*****************************************************************************/
719
720#if !_POSIX_MAPPED_FILES
721# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
722# define munmap(addr,length) (errno = ENOSYS, -1)
723#endif
724
725#if !_POSIX_MEMORY_PROTECTION
726# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
727# define PROT_NONE 0
728# define PROT_WRITE 0
729# define MAP_PRIVATE 0
730# define MAP_SHARED 0
731# define MAP_FIXED 0
732#endif
733
734#define MMAP_MAGIC PERL_MAGIC_ext
735
736static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
737{
738 int old_errno = errno;
739 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
740 errno = old_errno;
741
742 mg->mg_obj = 0; /* just in case */
743
744 SvREADONLY_off (sv);
745
746 if (SvPVX (sv) != mg->mg_ptr)
747 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
748
749 SvCUR_set (sv, 0);
750 SvPVX (sv) = 0;
751 SvOK_off (sv);
386 752
387 return 0; 753 return 0;
388} 754}
389 755
756static MGVTBL mmap_vtbl = {
757 0, 0, 0, 0, mmap_free
758};
759
760/*****************************************************************************/
761
762static SV * get_cb (SV *cb_sv)
763{
764 SvGETMAGIC (cb_sv);
765 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
766}
767
768#define dREQ \
769 SV *cb_cv; \
770 aio_req req; \
771 int req_pri = next_pri; \
772 next_pri = EIO_PRI_DEFAULT; \
773 \
774 cb_cv = get_cb (callback); \
775 \
776 Newz (0, req, 1, eio_req); \
777 if (!req) \
778 croak ("out of memory during eio_req allocation"); \
779 \
780 req->callback = SvREFCNT_inc (cb_cv); \
781 req->pri = req_pri
782
783#define REQ_SEND \
784 PUTBACK; \
785 req_submit (req); \
786 SPAGAIN; \
787 \
788 if (GIMME_V != G_VOID) \
789 XPUSHs (req_sv (req, aio_req_stash));
790
390MODULE = IO::AIO PACKAGE = IO::AIO 791MODULE = IO::AIO PACKAGE = IO::AIO
391 792
392PROTOTYPES: ENABLE 793PROTOTYPES: ENABLE
393 794
394BOOT: 795BOOT:
395{ 796{
396 if (pipe (respipe)) 797 static const struct {
397 croak ("unable to initialize result pipe"); 798 const char *name;
799 IV iv;
800 } *civ, const_iv[] = {
801# define const_niv(name, value) { # name, (IV) value },
802# define const_iv(name) { # name, (IV) name },
803# define const_eio(name) { # name, (IV) EIO_ ## name },
804 const_iv (EXDEV)
805 const_iv (ENOSYS)
806 const_iv (O_RDONLY)
807 const_iv (O_WRONLY)
808 const_iv (O_RDWR)
809 const_iv (O_CREAT)
810 const_iv (O_TRUNC)
811 const_iv (O_EXCL)
812 const_iv (O_APPEND)
398 813
399 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 814 const_iv (O_ASYNC)
400 croak ("cannot set result pipe to nonblocking mode"); 815 const_iv (O_DIRECT)
816 const_iv (O_NOATIME)
401 817
402 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 818 const_iv (O_CLOEXEC)
403 croak ("cannot set result pipe to nonblocking mode"); 819 const_iv (O_NOCTTY)
404} 820 const_iv (O_NOFOLLOW)
821 const_iv (O_NONBLOCK)
822 const_iv (O_EXEC)
823 const_iv (O_SEARCH)
824 const_iv (O_DIRECTORY)
825 const_iv (O_DSYNC)
826 const_iv (O_RSYNC)
827 const_iv (O_SYNC)
828 const_iv (O_TTY_INIT)
405 829
830 const_iv (S_IFIFO)
831 const_iv (S_IFCHR)
832 const_iv (S_IFBLK)
833 const_iv (S_IFLNK)
834 const_iv (S_IFREG)
835 const_iv (S_IFDIR)
836 const_iv (S_IFWHT)
837 const_iv (S_IFSOCK)
838 const_iv (S_IFMT)
839
840 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
841 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
842 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
843 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
844 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
845 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
846
847 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
848 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
849 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
850 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
851 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
852
853 const_iv (ST_RDONLY)
854 const_iv (ST_NOSUID)
855 const_iv (ST_NODEV)
856 const_iv (ST_NOEXEC)
857 const_iv (ST_SYNCHRONOUS)
858 const_iv (ST_MANDLOCK)
859 const_iv (ST_WRITE)
860 const_iv (ST_APPEND)
861 const_iv (ST_IMMUTABLE)
862 const_iv (ST_NOATIME)
863 const_iv (ST_NODIRATIME)
864 const_iv (ST_RELATIME)
865
866 const_iv (PROT_NONE)
867 const_iv (PROT_EXEC)
868 const_iv (PROT_READ)
869 const_iv (PROT_WRITE)
870
871 /*const_iv (MAP_FIXED)*/
872 const_iv (MAP_PRIVATE)
873 const_iv (MAP_SHARED)
874 const_iv (MAP_ANONYMOUS)
875
876 /* linuxish */
877 const_iv (MAP_HUGETLB)
878 const_iv (MAP_LOCKED)
879 const_iv (MAP_NORESERVE)
880 const_iv (MAP_POPULATE)
881 const_iv (MAP_NONBLOCK)
882
883 const_eio (MCL_FUTURE)
884 const_eio (MCL_CURRENT)
885
886 const_eio (MS_ASYNC)
887 const_eio (MS_INVALIDATE)
888 const_eio (MS_SYNC)
889
890 const_eio (MT_MODIFY)
891
892 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
893 const_eio (SYNC_FILE_RANGE_WRITE)
894 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
895
896 const_eio (READDIR_DENTS)
897 const_eio (READDIR_DIRS_FIRST)
898 const_eio (READDIR_STAT_ORDER)
899 const_eio (READDIR_FOUND_UNKNOWN)
900
901 const_eio (DT_UNKNOWN)
902 const_eio (DT_FIFO)
903 const_eio (DT_CHR)
904 const_eio (DT_DIR)
905 const_eio (DT_BLK)
906 const_eio (DT_REG)
907 const_eio (DT_LNK)
908 const_eio (DT_SOCK)
909 const_eio (DT_WHT)
910 };
911
912 aio_stash = gv_stashpv ("IO::AIO" , 1);
913 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
914 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
915
916 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
917 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
918
919 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
920
921 create_respipe ();
922
923 if (eio_init (want_poll, done_poll) < 0)
924 croak ("IO::AIO: unable to initialise eio library");
925
926 /* atfork child called in fifo order, so before eio's handler */
927 X_THREAD_ATFORK (0, 0, atfork_child);
928}
929
406void 930void
407min_parallel(nthreads) 931max_poll_reqs (unsigned int nreqs)
408 int nthreads
409 PROTOTYPE: $ 932 PROTOTYPE: $
410 CODE: 933 CODE:
411 while (nthreads > started) 934 eio_set_max_poll_reqs (nreqs);
412 start_thread ();
413 935
414void 936void
415max_parallel(nthreads) 937max_poll_time (double nseconds)
416 int nthreads
417 PROTOTYPE: $ 938 PROTOTYPE: $
418 CODE: 939 CODE:
940 eio_set_max_poll_time (nseconds);
941
942void
943min_parallel (unsigned int nthreads)
944 PROTOTYPE: $
945 CODE:
946 eio_set_min_parallel (nthreads);
947
948void
949max_parallel (unsigned int nthreads)
950 PROTOTYPE: $
951 CODE:
952 eio_set_max_parallel (nthreads);
953
954void
955max_idle (unsigned int nthreads)
956 PROTOTYPE: $
957 CODE:
958 eio_set_max_idle (nthreads);
959
960void
961idle_timeout (unsigned int seconds)
962 PROTOTYPE: $
963 CODE:
964 eio_set_idle_timeout (seconds);
965
966void
967max_outstanding (unsigned int maxreqs)
968 PROTOTYPE: $
969 CODE:
970 max_outstanding = maxreqs;
971
972void
973aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
974 PPCODE:
419{ 975{
420 int cur = started; 976 dREQ;
421 while (cur > nthreads) 977
422 { 978 req->type = EIO_OPEN;
423 end_thread (); 979 req->sv1 = newSVsv (pathname);
424 cur--; 980 req->ptr1 = SvPVbyte_nolen (req->sv1);
981 req->int1 = flags;
982 req->int2 = mode;
983
984 REQ_SEND;
985}
986
987void
988aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
989 ALIAS:
990 aio_fsync = EIO_FSYNC
991 aio_fdatasync = EIO_FDATASYNC
992 PPCODE:
993{
994 int fd = s_fileno_croak (fh, 0);
995 dREQ;
996
997 req->type = ix;
998 req->sv1 = newSVsv (fh);
999 req->int1 = fd;
1000
1001 REQ_SEND (req);
1002}
1003
1004void
1005aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1006 PPCODE:
1007{
1008 int fd = s_fileno_croak (fh, 0);
1009 dREQ;
1010
1011 req->type = EIO_SYNC_FILE_RANGE;
1012 req->sv1 = newSVsv (fh);
1013 req->int1 = fd;
1014 req->offs = offset;
1015 req->size = nbytes;
1016 req->int2 = flags;
1017
1018 REQ_SEND (req);
1019}
1020
1021void
1022aio_close (SV *fh, SV *callback=&PL_sv_undef)
1023 PPCODE:
1024{
1025 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
1026 int fd = s_fileno_croak (fh, 0);
1027 dREQ;
1028
1029 if (close_pipe < 0)
1030 {
1031 int pipefd [2];
1032
1033 if (pipe (pipefd) < 0
1034 || close (pipefd [1]) < 0
1035 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
1036 abort (); /*D*/
1037
1038 close_pipe = pipefd [0];
425 } 1039 }
426 1040
427 while (started > nthreads) 1041 req->type = EIO_DUP2;
1042 req->int1 = close_pipe;
1043 req->sv2 = newSVsv (fh);
1044 req->int2 = fd;
1045
1046 REQ_SEND (req);
1047}
1048
1049void
1050aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1051 ALIAS:
1052 aio_read = EIO_READ
1053 aio_write = EIO_WRITE
1054 PPCODE:
1055{
1056 STRLEN svlen;
1057 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1058 char *svptr = SvPVbyte (data, svlen);
1059 UV len = SvUV (length);
1060
1061 if (dataoffset < 0)
1062 dataoffset += svlen;
1063
1064 if (dataoffset < 0 || dataoffset > svlen)
1065 croak ("dataoffset outside of data scalar");
1066
1067 if (ix == EIO_WRITE)
1068 {
1069 /* write: check length and adjust. */
1070 if (!SvOK (length) || len + dataoffset > svlen)
1071 len = svlen - dataoffset;
1072 }
1073 else
1074 {
1075 /* read: check type and grow scalar as necessary */
1076 SvUPGRADE (data, SVt_PV);
1077 svptr = SvGROW (data, len + dataoffset + 1);
1078 }
1079
1080 {
1081 dREQ;
1082
1083 req->type = ix;
1084 req->sv1 = newSVsv (fh);
1085 req->int1 = fd;
1086 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1087 req->size = len;
1088 req->sv2 = SvREFCNT_inc (data);
1089 req->ptr2 = (char *)svptr + dataoffset;
1090 req->stroffset = dataoffset;
1091
1092 if (!SvREADONLY (data))
1093 {
1094 SvREADONLY_on (data);
1095 req->flags |= FLAG_SV2_RO_OFF;
1096 }
1097
1098 REQ_SEND;
1099 }
1100}
1101
1102void
1103aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1104 ALIAS:
1105 aio_readlink = EIO_READLINK
1106 aio_realpath = EIO_REALPATH
1107 PPCODE:
1108{
1109 SV *data;
1110 dREQ;
1111
1112 req->type = ix;
1113 req->sv1 = newSVsv (path);
1114 req->ptr1 = SvPVbyte_nolen (req->sv1);
1115
1116 REQ_SEND;
1117}
1118
1119void
1120aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1121 PPCODE:
1122{
1123 int ifd = s_fileno_croak (in_fh , 0);
1124 int ofd = s_fileno_croak (out_fh, 1);
1125 dREQ;
1126
1127 req->type = EIO_SENDFILE;
1128 req->sv1 = newSVsv (out_fh);
1129 req->int1 = ofd;
1130 req->sv2 = newSVsv (in_fh);
1131 req->int2 = ifd;
1132 req->offs = in_offset;
1133 req->size = length;
1134
1135 REQ_SEND;
1136}
1137
1138void
1139aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1140 PPCODE:
1141{
1142 int fd = s_fileno_croak (fh, 0);
1143 dREQ;
1144
1145 req->type = EIO_READAHEAD;
1146 req->sv1 = newSVsv (fh);
1147 req->int1 = fd;
1148 req->offs = offset;
1149 req->size = length;
1150
1151 REQ_SEND;
1152}
1153
1154void
1155aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1156 ALIAS:
1157 aio_stat = EIO_STAT
1158 aio_lstat = EIO_LSTAT
1159 aio_statvfs = EIO_STATVFS
1160 PPCODE:
1161{
1162 dREQ;
1163
1164 req->sv1 = newSVsv (fh_or_path);
1165
1166 if (SvPOK (req->sv1))
1167 {
1168 req->type = ix;
1169 req->ptr1 = SvPVbyte_nolen (req->sv1);
1170 }
1171 else
1172 {
1173 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1174 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1175 }
1176
1177 REQ_SEND;
1178}
1179
1180UV
1181major (UV dev)
1182 ALIAS:
1183 minor = 1
1184 CODE:
1185 RETVAL = ix ? major (dev) : minor (dev);
1186 OUTPUT:
1187 RETVAL
1188
1189UV
1190makedev (UV maj, UV min)
1191 CODE:
1192 RETVAL = makedev (maj, min);
1193 OUTPUT:
1194 RETVAL
1195
1196void
1197aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1198 PPCODE:
1199{
1200 dREQ;
1201
1202 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1203 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1204 req->sv1 = newSVsv (fh_or_path);
1205
1206 if (SvPOK (req->sv1))
1207 {
1208 req->type = EIO_UTIME;
1209 req->ptr1 = SvPVbyte_nolen (req->sv1);
1210 }
1211 else
1212 {
1213 req->type = EIO_FUTIME;
1214 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1215 }
1216
1217 REQ_SEND;
1218}
1219
1220void
1221aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1222 PPCODE:
1223{
1224 dREQ;
1225
1226 req->sv1 = newSVsv (fh_or_path);
1227 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1228
1229 if (SvPOK (req->sv1))
1230 {
1231 req->type = EIO_TRUNCATE;
1232 req->ptr1 = SvPVbyte_nolen (req->sv1);
1233 }
1234 else
1235 {
1236 req->type = EIO_FTRUNCATE;
1237 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1238 }
1239
1240 REQ_SEND;
1241}
1242
1243void
1244aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1245 ALIAS:
1246 aio_chmod = EIO_CHMOD
1247 aio_mkdir = EIO_MKDIR
1248 PPCODE:
1249{
1250 dREQ;
1251
1252 req->int2 = mode;
1253 req->sv1 = newSVsv (fh_or_path);
1254
1255 if (SvPOK (req->sv1))
1256 {
1257 req->type = ix;
1258 req->ptr1 = SvPVbyte_nolen (req->sv1);
1259 }
1260 else
1261 {
1262 req->type = EIO_FCHMOD;
1263 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1264 }
1265
1266 REQ_SEND;
1267}
1268
1269void
1270aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1271 PPCODE:
1272{
1273 dREQ;
1274
1275 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1276 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1277 req->sv1 = newSVsv (fh_or_path);
1278
1279 if (SvPOK (req->sv1))
1280 {
1281 req->type = EIO_CHOWN;
1282 req->ptr1 = SvPVbyte_nolen (req->sv1);
1283 }
1284 else
1285 {
1286 req->type = EIO_FCHOWN;
1287 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1288 }
1289
1290 REQ_SEND;
1291}
1292
1293void
1294aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1295 PPCODE:
1296{
1297 dREQ;
1298
1299 req->type = EIO_READDIR;
1300 req->sv1 = newSVsv (pathname);
1301 req->ptr1 = SvPVbyte_nolen (req->sv1);
1302 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1303
1304 if (flags & EIO_READDIR_DENTS)
1305 req->int1 |= EIO_READDIR_CUSTOM2;
1306
1307 REQ_SEND;
1308}
1309
1310void
1311aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1312 ALIAS:
1313 aio_unlink = EIO_UNLINK
1314 aio_rmdir = EIO_RMDIR
1315 aio_readdir = EIO_READDIR
1316 PPCODE:
1317{
1318 dREQ;
1319
1320 req->type = ix;
1321 req->sv1 = newSVsv (pathname);
1322 req->ptr1 = SvPVbyte_nolen (req->sv1);
1323
1324 REQ_SEND;
1325}
1326
1327void
1328aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1329 ALIAS:
1330 aio_link = EIO_LINK
1331 aio_symlink = EIO_SYMLINK
1332 aio_rename = EIO_RENAME
1333 PPCODE:
1334{
1335 dREQ;
1336
1337 req->type = ix;
1338 req->sv1 = newSVsv (oldpath);
1339 req->ptr1 = SvPVbyte_nolen (req->sv1);
1340 req->sv2 = newSVsv (newpath);
1341 req->ptr2 = SvPVbyte_nolen (req->sv2);
1342
1343 REQ_SEND;
1344}
1345
1346void
1347aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1348 PPCODE:
1349{
1350 dREQ;
1351
1352 req->type = EIO_MKNOD;
1353 req->sv1 = newSVsv (pathname);
1354 req->ptr1 = SvPVbyte_nolen (req->sv1);
1355 req->int2 = (mode_t)mode;
1356 req->offs = dev;
1357
1358 REQ_SEND;
1359}
1360
1361void
1362aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1363 ALIAS:
1364 aio_mtouch = EIO_MTOUCH
1365 aio_msync = EIO_MSYNC
1366 PPCODE:
1367{
1368 STRLEN svlen;
1369 char *svptr = SvPVbyte (data, svlen);
1370 UV len = SvUV (length);
1371
1372 if (offset < 0)
1373 offset += svlen;
1374
1375 if (offset < 0 || offset > svlen)
1376 croak ("offset outside of scalar");
1377
1378 if (!SvOK (length) || len + offset > svlen)
1379 len = svlen - offset;
1380
1381 {
1382 dREQ;
1383
1384 req->type = ix;
1385 req->sv2 = SvREFCNT_inc (data);
1386 req->ptr2 = (char *)svptr + offset;
1387 req->size = len;
1388 req->int1 = flags;
1389
1390 REQ_SEND;
1391 }
1392}
1393
1394void
1395aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1396 PPCODE:
1397{
1398 STRLEN svlen;
1399 char *svptr = SvPVbyte (data, svlen);
1400 UV len = SvUV (length);
1401
1402 if (offset < 0)
1403 offset += svlen;
1404
1405 if (offset < 0 || offset > svlen)
1406 croak ("offset outside of scalar");
1407
1408 if (!SvOK (length) || len + offset > svlen)
1409 len = svlen - offset;
1410
1411 {
1412 dREQ;
1413
1414 req->type = EIO_MLOCK;
1415 req->sv2 = SvREFCNT_inc (data);
1416 req->ptr2 = (char *)svptr + offset;
1417 req->size = len;
1418
1419 REQ_SEND;
1420 }
1421}
1422
1423void
1424aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1425 PPCODE:
1426{
1427 dREQ;
1428
1429 req->type = EIO_MLOCKALL;
1430 req->int1 = flags;
1431
1432 REQ_SEND;
1433}
1434
1435void
1436aio_busy (double delay, SV *callback=&PL_sv_undef)
1437 PPCODE:
1438{
1439 dREQ;
1440
1441 req->type = EIO_BUSY;
1442 req->nv1 = delay < 0. ? 0. : delay;
1443
1444 REQ_SEND;
1445}
1446
1447void
1448aio_group (SV *callback=&PL_sv_undef)
1449 PPCODE:
1450{
1451 dREQ;
1452
1453 req->type = EIO_GROUP;
1454
1455 req_submit (req);
1456 XPUSHs (req_sv (req, aio_grp_stash));
1457}
1458
1459void
1460aio_nop (SV *callback=&PL_sv_undef)
1461 ALIAS:
1462 aio_nop = EIO_NOP
1463 aio_sync = EIO_SYNC
1464 PPCODE:
1465{
1466 dREQ;
1467
1468 req->type = ix;
1469
1470 REQ_SEND;
1471}
1472
1473int
1474aioreq_pri (int pri = 0)
1475 CODE:
1476 RETVAL = next_pri;
1477 if (items > 0)
1478 {
1479 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1480 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1481 next_pri = pri;
1482 }
1483 OUTPUT:
1484 RETVAL
1485
1486void
1487aioreq_nice (int nice = 0)
1488 CODE:
1489 nice = next_pri - nice;
1490 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1491 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1492 next_pri = nice;
1493
1494void
1495flush ()
1496 CODE:
1497 while (eio_nreqs ())
428 { 1498 {
429 poll_wait (); 1499 poll_wait ();
430 poll_cb (); 1500 poll_cb ();
431 } 1501 }
432}
433 1502
434int 1503int
435max_outstanding(nreqs)
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: $$$;$
449 CODE:
450{
451 aio_req req;
452
453 Newz (0, req, 1, aio_cb);
454
455 if (!req)
456 croak ("out of memory during aio_req allocation");
457
458 req->type = REQ_OPEN;
459 req->data = newSVsv (pathname);
460 req->dataptr = SvPV_nolen (req->data);
461 req->fd = flags;
462 req->mode = mode;
463 req->callback = SvREFCNT_inc (callback);
464
465 send_req (req);
466}
467
468void
469aio_close(fh,callback=&PL_sv_undef)
470 SV * fh
471 SV * callback
472 PROTOTYPE: $;$
473 ALIAS:
474 aio_close = REQ_CLOSE
475 aio_fsync = REQ_FSYNC
476 aio_fdatasync = REQ_FDATASYNC
477 CODE:
478{
479 aio_req req;
480
481 Newz (0, req, 1, aio_cb);
482
483 if (!req)
484 croak ("out of memory during aio_req allocation");
485
486 req->type = ix;
487 req->fh = newSVsv (fh);
488 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
489 req->callback = SvREFCNT_inc (callback);
490
491 send_req (req);
492}
493
494void
495aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
496 SV * fh
497 UV offset
498 IV length
499 SV * data
500 IV dataoffset
501 SV * callback
502 ALIAS:
503 aio_read = REQ_READ
504 aio_write = REQ_WRITE
505 PROTOTYPE: $$$$$;$
506 CODE:
507{
508 aio_req req;
509 STRLEN svlen;
510 char *svptr = SvPV (data, svlen);
511
512 SvUPGRADE (data, SVt_PV);
513 SvPOK_on (data);
514
515 if (dataoffset < 0)
516 dataoffset += svlen;
517
518 if (dataoffset < 0 || dataoffset > svlen)
519 croak ("data offset outside of string");
520
521 if (ix == REQ_WRITE)
522 {
523 /* write: check length and adjust. */
524 if (length < 0 || length + dataoffset > svlen)
525 length = svlen - dataoffset;
526 }
527 else
528 {
529 /* read: grow scalar as necessary */
530 svptr = SvGROW (data, length + dataoffset);
531 }
532
533 if (length < 0)
534 croak ("length must not be negative");
535
536 Newz (0, req, 1, aio_cb);
537
538 if (!req)
539 croak ("out of memory during aio_req allocation");
540
541 req->type = ix;
542 req->fh = newSVsv (fh);
543 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
544 : IoOFP (sv_2io (fh)));
545 req->offset = offset;
546 req->length = length;
547 req->data = SvREFCNT_inc (data);
548 req->dataptr = (char *)svptr + dataoffset;
549 req->callback = SvREFCNT_inc (callback);
550
551 send_req (req);
552}
553
554void
555aio_readahead(fh,offset,length,callback=&PL_sv_undef)
556 SV * fh
557 UV offset
558 IV length
559 SV * callback
560 PROTOTYPE: $$$;$
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 ();
650 poll_cb ();
651 }
652
653void
654poll() 1504poll ()
655 PROTOTYPE:
656 CODE: 1505 CODE:
657 if (nreqs)
658 {
659 poll_wait (); 1506 poll_wait ();
660 poll_cb ();
661 }
662
663int
664poll_fileno()
665 PROTOTYPE:
666 CODE:
667 RETVAL = respipe [0];
668 OUTPUT:
669 RETVAL
670
671int
672poll_cb(...)
673 PROTOTYPE:
674 CODE:
675 RETVAL = poll_cb (); 1507 RETVAL = poll_cb ();
676 OUTPUT: 1508 OUTPUT:
677 RETVAL 1509 RETVAL
678 1510
679void
680poll_wait()
681 PROTOTYPE:
682 CODE:
683 if (nreqs)
684 poll_wait ();
685
686int 1511int
687nreqs() 1512poll_fileno ()
688 PROTOTYPE:
689 CODE: 1513 CODE:
690 RETVAL = nreqs; 1514 RETVAL = s_epipe_fd (&respipe);
691 OUTPUT: 1515 OUTPUT:
692 RETVAL 1516 RETVAL
693 1517
1518int
1519poll_cb (...)
1520 PROTOTYPE:
1521 CODE:
1522 RETVAL = poll_cb ();
1523 OUTPUT:
1524 RETVAL
1525
1526void
1527poll_wait ()
1528 CODE:
1529 poll_wait ();
1530
1531int
1532nreqs ()
1533 CODE:
1534 RETVAL = eio_nreqs ();
1535 OUTPUT:
1536 RETVAL
1537
1538int
1539nready ()
1540 CODE:
1541 RETVAL = eio_nready ();
1542 OUTPUT:
1543 RETVAL
1544
1545int
1546npending ()
1547 CODE:
1548 RETVAL = eio_npending ();
1549 OUTPUT:
1550 RETVAL
1551
1552int
1553nthreads ()
1554 CODE:
1555 RETVAL = eio_nthreads ();
1556 OUTPUT:
1557 RETVAL
1558
1559int
1560fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1561 CODE:
1562 RETVAL = posix_fadvise (fh, offset, length, advice);
1563 OUTPUT:
1564 RETVAL
1565
1566ssize_t
1567sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1568 CODE:
1569 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1570 OUTPUT:
1571 RETVAL
1572
1573void
1574mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1575 PPCODE:
1576 sv_unmagic (scalar, MMAP_MAGIC);
1577{
1578 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1579 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1580 if (addr == (void *)-1)
1581 XSRETURN_NO;
1582
1583 sv_force_normal (scalar);
1584
1585 /* we store the length in mg_obj, as namlen is I32 :/ */
1586 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1587 ->mg_obj = (SV *)length;
1588
1589 SvUPGRADE (scalar, SVt_PV); /* nop... */
1590
1591 if (!(prot & PROT_WRITE))
1592 SvREADONLY_on (scalar);
1593
1594 if (SvLEN (scalar))
1595 Safefree (SvPVX (scalar));
1596
1597 SvPVX (scalar) = (char *)addr;
1598 SvCUR_set (scalar, length);
1599 SvLEN_set (scalar, 0);
1600 SvPOK_only (scalar);
1601
1602 XSRETURN_YES;
1603}
1604
1605void
1606munmap (SV *scalar)
1607 CODE:
1608 sv_unmagic (scalar, MMAP_MAGIC);
1609
1610int
1611madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1612 ALIAS:
1613 mprotect = 1
1614 CODE:
1615{
1616 STRLEN svlen;
1617 void *addr = SvPVbyte (scalar, svlen);
1618 size_t len = SvUV (length);
1619
1620 if (offset < 0)
1621 offset += svlen;
1622
1623 if (offset < 0 || offset > svlen)
1624 croak ("offset outside of scalar");
1625
1626 if (!SvOK (length) || len + offset > svlen)
1627 len = svlen - offset;
1628
1629 addr = (void *)(((intptr_t)addr) + offset);
1630 eio_page_align (&addr, &len);
1631
1632 switch (ix)
1633 {
1634 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1635 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1636 }
1637}
1638 OUTPUT:
1639 RETVAL
1640
1641int
1642munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1643 CODE:
1644{
1645 STRLEN svlen;
1646 void *addr = SvPVbyte (scalar, svlen);
1647 size_t len = SvUV (length);
1648
1649 if (offset < 0)
1650 offset += svlen;
1651
1652 if (offset < 0 || offset > svlen)
1653 croak ("offset outside of scalar");
1654
1655 if (!SvOK (length) || len + offset > svlen)
1656 len = svlen - offset;
1657
1658 addr = (void *)(((intptr_t)addr) + offset);
1659 eio_page_align (&addr, &len);
1660#if _POSIX_MEMLOCK_RANGE
1661 RETVAL = munlock (addr, len);
1662#else
1663 RETVAL = ((errno = ENOSYS), -1);
1664#endif
1665}
1666 OUTPUT:
1667 RETVAL
1668
1669int
1670munlockall ()
1671 CODE:
1672#if _POSIX_MEMLOCK
1673 munlockall ();
1674#else
1675 RETVAL = -1;
1676 errno = ENOSYS;
1677#endif
1678 OUTPUT:
1679 RETVAL
1680
1681void _on_next_submit (SV *cb)
1682 CODE:
1683 SvREFCNT_dec (on_next_submit);
1684 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1685
1686PROTOTYPES: DISABLE
1687
1688MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1689
1690void
1691cancel (aio_req_ornot req)
1692 CODE:
1693 eio_cancel (req);
1694
1695void
1696cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1697 PPCODE:
1698{
1699 if (GIMME_V != G_VOID)
1700 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1701
1702 if (items > 1)
1703 {
1704 SV *cb_cv =get_cb (callback);
1705
1706 SvREFCNT_dec (req->callback);
1707 req->callback = SvREFCNT_inc (cb_cv);
1708 }
1709}
1710
1711MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1712
1713void
1714add (aio_req grp, ...)
1715 PPCODE:
1716{
1717 int i;
1718
1719 if (grp->int1 == 2)
1720 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1721
1722 for (i = 1; i < items; ++i )
1723 {
1724 aio_req req;
1725
1726 if (GIMME_V != G_VOID)
1727 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1728
1729 req = SvAIO_REQ (ST (i));
1730
1731 if (req)
1732 eio_grp_add (grp, req);
1733 }
1734}
1735
1736void
1737cancel_subs (aio_req_ornot req)
1738 CODE:
1739 req_cancel_subs (req);
1740
1741void
1742result (aio_req grp, ...)
1743 CODE:
1744{
1745 int i;
1746 AV *av;
1747
1748 grp->errorno = errno;
1749
1750 av = newAV ();
1751 av_extend (av, items - 1);
1752
1753 for (i = 1; i < items; ++i )
1754 av_push (av, newSVsv (ST (i)));
1755
1756 SvREFCNT_dec (grp->sv1);
1757 grp->sv1 = (SV *)av;
1758}
1759
1760void
1761errno (aio_req grp, int errorno = errno)
1762 CODE:
1763 grp->errorno = errorno;
1764
1765void
1766limit (aio_req grp, int limit)
1767 CODE:
1768 eio_grp_limit (grp, limit);
1769
1770void
1771feed (aio_req grp, SV *callback=&PL_sv_undef)
1772 CODE:
1773{
1774 SvREFCNT_dec (grp->sv2);
1775 grp->sv2 = newSVsv (callback);
1776 grp->feed = aio_grp_feed;
1777
1778 if (grp->int2 <= 0)
1779 grp->int2 = 2;
1780
1781 eio_grp_limit (grp, grp->int2);
1782}
1783

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