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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.34 by root, Tue Aug 23 00:03:14 2005 UTC vs.
Revision 1.158 by root, Sat Jan 2 14:11:32 2010 UTC

1#define _REENTRANT 1 1#include "libeio/xthread.h"
2
2#include <errno.h> 3#include <errno.h>
3 4
4#include "EXTERN.h" 5#include "EXTERN.h"
5#include "perl.h" 6#include "perl.h"
6#include "XSUB.h" 7#include "XSUB.h"
7 8
8#include "autoconf/config.h" 9#include "schmorp.h"
9 10
10#include <pthread.h> 11#include <stddef.h>
11 12#include <stdlib.h>
13#include <errno.h>
12#include <sys/types.h> 14#include <sys/types.h>
13#include <sys/stat.h> 15#include <sys/stat.h>
14
15#include <unistd.h> 16#include <limits.h>
16#include <fcntl.h> 17#include <fcntl.h>
17#include <signal.h>
18#include <sched.h> 18#include <sched.h>
19 19
20#if HAVE_SENDFILE 20/* perl namespace pollution */
21# if __linux 21#undef VERSION
22# include <sys/sendfile.h> 22
23# elif __freebsd 23#ifdef _WIN32
24# include <sys/socket.h> 24
25# include <sys/uio.h> 25# define EIO_STRUCT_DIRENT Direntry_t
26# elif __hpux 26# undef malloc
27# include <sys/socket.h> 27# undef free
28
29// perl overrides all those nice win32 functions
30# undef open
31# undef read
32# undef write
33# undef send
34# undef recv
35# undef stat
36# undef fstat
37# define lstat stat
38# undef truncate
39# undef ftruncate
40# undef open
41# undef close
42# undef unlink
43# undef rmdir
44# undef rename
45# undef lseek
46
47# define chown(a,b,c) (errno = ENOSYS, -1)
48# define fchown(a,b,c) (errno = ENOSYS, -1)
49# define fchmod(a,b) (errno = ENOSYS, -1)
50# define symlink(a,b) (errno = ENOSYS, -1)
51# define readlink(a,b,c) (errno = ENOSYS, -1)
52# define mknod(a,b,c) (errno = ENOSYS, -1)
53# define truncate(a,b) (errno = ENOSYS, -1)
54# define ftruncate(fd,o) chsize ((fd), (o))
55# define fsync(fd) _commit (fd)
56# define opendir(fd) (errno = ENOSYS, 0)
57# define readdir(fd) (errno = ENOSYS, -1)
58# define closedir(fd) (errno = ENOSYS, -1)
59# define mkdir(a,b) mkdir (a)
60
28# else 61#else
29# error sendfile support requested but not available 62
30# endif 63# include <sys/time.h>
64# include <sys/select.h>
65# include <unistd.h>
66# include <utime.h>
67# include <signal.h>
68# define EIO_STRUCT_DIRENT struct dirent
69
31#endif 70#endif
32 71
33#if __ia64 72/* perl stupidly overrides readdir and maybe others */
34# define STACKSIZE 65536 73/* with thread-unsafe versions, imagine that :( */
74#undef readdir
75#undef opendir
76#undef closedir
77
78#define EIO_STRUCT_STAT Stat_t
79
80/* use NV for 32 bit perls as it allows larger offsets */
81#if IVSIZE >= 8
82# define VAL64 IV
83# define SvVAL64 SvIV
84# define newSVval64 newSViv
35#else 85#else
36# define STACKSIZE 4096 86# define VAL64 NV
87# define SvVAL64 SvNV
88# define newSVval64 newSVnv
37#endif 89#endif
38 90
91/*****************************************************************************/
92
93#if __GNUC__ >= 3
94# define expect(expr,value) __builtin_expect ((expr),(value))
95#else
96# define expect(expr,value) (expr)
97#endif
98
99#define expect_false(expr) expect ((expr) != 0, 0)
100#define expect_true(expr) expect ((expr) != 0, 1)
101
102/*****************************************************************************/
103
104typedef SV SV8; /* byte-sv, used for argument-checking */
105typedef int aio_rfd; /* read file desriptor */
106typedef int aio_wfd; /* write file descriptor */
107
108static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
109
110#define EIO_REQ_MEMBERS \
111 SV *callback; \
112 SV *sv1, *sv2; \
113 STRLEN stroffset; \
114 SV *self;
115
116#define EIO_NO_WRAPPERS 1
117
118#include "libeio/eio.h"
119
120#ifndef POSIX_FADV_NORMAL
121# define POSIX_FADV_NORMAL 0
122# define NO_FADVISE 1
123#endif
124
125#ifndef POSIX_FADV_SEQUENTIAL
126# define POSIX_FADV_SEQUENTIAL 0
127#endif
128
129#ifndef POSIX_FADV_RANDOM
130# define POSIX_FADV_RANDOM 0
131#endif
132
133#ifndef POSIX_FADV_NOREUSE
134# define POSIX_FADV_NOREUSE 0
135#endif
136
137#ifndef POSIX_FADV_WILLNEED
138# define POSIX_FADV_WILLNEED 0
139#endif
140
141#ifndef POSIX_FADV_DONTNEED
142# define POSIX_FADV_DONTNEED 0
143#endif
144
145static int req_invoke (eio_req *req);
146#define EIO_FINISH(req) req_invoke (req)
147static void req_destroy (eio_req *grp);
148#define EIO_DESTROY(req) req_destroy (req)
149
39enum { 150enum {
40 REQ_QUIT, 151 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
41 REQ_OPEN, REQ_CLOSE,
42 REQ_READ, REQ_WRITE, REQ_READAHEAD,
43 REQ_SENDFILE,
44 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
45 REQ_FSYNC, REQ_FDATASYNC,
46 REQ_UNLINK, REQ_RMDIR,
47 REQ_SYMLINK,
48}; 152};
49 153
50typedef struct aio_cb { 154#include "libeio/eio.c"
51 struct aio_cb *volatile next;
52 155
53 int type;
54
55 int fd, fd2;
56 off_t offset;
57 size_t length;
58 ssize_t result;
59 mode_t mode; /* open */
60 int errorno;
61 SV *data, *callback;
62 SV *fh, *fh2;
63 void *dataptr, *data2ptr;
64 STRLEN dataoffset;
65
66 Stat_t *statdata;
67} aio_cb;
68
69typedef aio_cb *aio_req; 156typedef eio_req *aio_req;
157typedef eio_req *aio_req_ornot;
70 158
71static int started, wanted; 159static SV *on_next_submit;
72static volatile int nreqs; 160static int next_pri = EIO_PRI_DEFAULT;
73static int max_outstanding = 1<<30; 161static int max_outstanding;
74static int respipe [2];
75 162
76static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 163static s_epipe respipe;
77static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
78static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
79 164
80static volatile aio_req reqs, reqe; /* queue start, queue end */ 165static void req_destroy (aio_req req);
81static volatile aio_req ress, rese; /* queue start, queue end */
82
83static void free_req (aio_req req) 166static void req_cancel (aio_req req);
84{
85 if (req->data)
86 SvREFCNT_dec (req->data);
87 167
168static void want_poll (void)
169{
170 /* write a dummy byte to the pipe so fh becomes ready */
171 s_epipe_signal (&respipe);
172}
173
174static void done_poll (void)
175{
176 /* read any signals sent by the worker threads */
177 s_epipe_drain (&respipe);
178}
179
180/* must be called at most once */
181static SV *req_sv (aio_req req, HV *stash)
182{
183 if (!req->self)
184 {
185 req->self = (SV *)newHV ();
186 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
187 }
188
189 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
190}
191
192static aio_req SvAIO_REQ (SV *sv)
193{
194 MAGIC *mg;
195
196 if (!SvROK (sv)
197 || (SvSTASH (SvRV (sv)) != aio_grp_stash
198 && SvSTASH (SvRV (sv)) != aio_req_stash
199 && !sv_derived_from (sv, "IO::AIO::REQ")))
200 croak ("object of class IO::AIO::REQ expected");
201
202 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
203
204 return mg ? (aio_req)mg->mg_ptr : 0;
205}
206
207static void aio_grp_feed (aio_req grp)
208{
209 if (grp->sv2 && SvOK (grp->sv2))
210 {
211 dSP;
212
213 ENTER;
214 SAVETMPS;
215 PUSHMARK (SP);
216 XPUSHs (req_sv (grp, aio_grp_stash));
217 PUTBACK;
218 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
219 SPAGAIN;
220 FREETMPS;
221 LEAVE;
222 }
223}
224
225static void req_submit (eio_req *req)
226{
227 eio_submit (req);
228
229 if (expect_false (on_next_submit))
230 {
231 dSP;
232 SV *cb = sv_2mortal (on_next_submit);
233
234 on_next_submit = 0;
235
236 PUSHMARK (SP);
237 PUTBACK;
238 call_sv (cb, G_DISCARD | G_EVAL);
239 }
240}
241
242static int req_invoke (eio_req *req)
243{
244 dSP;
245
246 if (req->flags & FLAG_SV2_RO_OFF)
247 SvREADONLY_off (req->sv2);
248
249 if (!EIO_CANCELLED (req) && req->callback)
250 {
251 ENTER;
252 SAVETMPS;
253 PUSHMARK (SP);
254 EXTEND (SP, 1);
255
256 switch (req->type)
257 {
258 case EIO_READDIR:
259 {
260 SV *rv = &PL_sv_undef;
261
262 if (req->result >= 0)
263 {
264 int i;
265 char *names = (char *)req->ptr2;
266 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
267 AV *av = newAV ();
268
269 av_extend (av, req->result - 1);
270
271 for (i = 0; i < req->result; ++i)
272 {
273 if (req->int1 & EIO_READDIR_DENTS)
274 {
275 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
276
277 if (req->int1 & EIO_READDIR_CUSTOM2)
278 {
279 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
280 AV *avent = newAV ();
281
282 av_extend (avent, 2);
283
284 if (!sv_type [ent->type])
285 {
286 sv_type [ent->type] = newSViv (ent->type);
287 SvREADONLY_on (sv_type [ent->type]);
288 }
289
290 av_store (avent, 0, namesv);
291 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
292 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
293
294 av_store (av, i, newRV_noinc ((SV *)avent));
295 }
296 else
297 av_store (av, i, namesv);
298
299 ++ent;
300 }
301 else
302 {
303 SV *name = newSVpv (names, 0);
304 av_store (av, i, name);
305 names += SvCUR (name) + 1;
306 }
307 }
308
309 rv = sv_2mortal (newRV_noinc ((SV *)av));
310 }
311
312 PUSHs (rv);
313
314 if (req->int1 & EIO_READDIR_CUSTOM1)
315 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
316 }
317 break;
318
319 case EIO_OPEN:
320 {
321 /* convert fd to fh */
322 SV *fh = &PL_sv_undef;
323
324 if (req->result >= 0)
325 {
326 GV *gv = (GV *)sv_newmortal ();
327 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
328 char sym [64];
329 int symlen;
330
331 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
332 gv_init (gv, aio_stash, sym, symlen, 0);
333
334 symlen = snprintf (
335 sym,
336 sizeof (sym),
337 "%s&=%d",
338 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
339 (int)req->result
340 );
341
342 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
343 fh = (SV *)gv;
344 }
345
346 PUSHs (fh);
347 }
348 break;
349
350 case EIO_GROUP:
351 req->int1 = 2; /* mark group as finished */
352
353 if (req->sv1)
354 {
355 int i;
356 AV *av = (AV *)req->sv1;
357
358 EXTEND (SP, AvFILL (av) + 1);
359 for (i = 0; i <= AvFILL (av); ++i)
360 PUSHs (*av_fetch (av, i, 0));
361 }
362 break;
363
364 case EIO_NOP:
365 case EIO_BUSY:
366 break;
367
368 case EIO_READLINK:
369 if (req->result > 0)
370 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
371 break;
372
373 case EIO_STAT:
374 case EIO_LSTAT:
375 case EIO_FSTAT:
376 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
377 PL_laststatval = req->result;
378 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
379 PUSHs (sv_2mortal (newSViv (req->result)));
380 break;
381
382 case EIO_READ:
383 {
384 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
385 *SvEND (req->sv2) = 0;
386 SvPOK_only (req->sv2);
387 SvSETMAGIC (req->sv2);
388 PUSHs (sv_2mortal (newSViv (req->result)));
389 }
390 break;
391
392 case EIO_DUP2:
393 if (req->result > 0)
394 req->result = 0;
395 /* FALLTHROUGH */
396
397 default:
398 PUSHs (sv_2mortal (newSViv (req->result)));
399 break;
400 }
401
402 errno = req->errorno;
403
404 PUTBACK;
405 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
406 SPAGAIN;
407
408 FREETMPS;
409 LEAVE;
410
411 PUTBACK;
412 }
413
414 return !!SvTRUE (ERRSV);
415}
416
417static void req_destroy (aio_req req)
418{
88 if (req->fh) 419 if (req->self)
420 {
421 sv_unmagic (req->self, PERL_MAGIC_ext);
89 SvREFCNT_dec (req->fh); 422 SvREFCNT_dec (req->self);
423 }
90 424
91 if (req->fh2) 425 SvREFCNT_dec (req->sv1);
92 SvREFCNT_dec (req->fh2); 426 SvREFCNT_dec (req->sv2);
93
94 if (req->statdata)
95 Safefree (req->statdata);
96
97 if (req->callback)
98 SvREFCNT_dec (req->callback); 427 SvREFCNT_dec (req->callback);
99 428
100 Safefree (req); 429 Safefree (req);
101} 430}
102 431
432static void req_cancel_subs (aio_req grp)
433{
434 aio_req sub;
435
436 if (grp->type != EIO_GROUP)
437 return;
438
439 SvREFCNT_dec (grp->sv2);
440 grp->sv2 = 0;
441
442 eio_grp_cancel (grp);
443}
444
103static void 445static void
104poll_wait () 446create_respipe (void)
105{ 447{
106 if (nreqs && !ress) 448 if (s_epipe_renew (&respipe))
449 croak ("IO::AIO: unable to initialize result pipe");
450}
451
452static void poll_wait (void)
453{
454 while (eio_nreqs ())
107 { 455 {
108 fd_set rfd; 456 int size;
109 FD_ZERO(&rfd);
110 FD_SET(respipe [0], &rfd);
111 457
112 select (respipe [0] + 1, &rfd, 0, 0, 0); 458 X_LOCK (reslock);
459 size = res_queue.size;
460 X_UNLOCK (reslock);
461
462 if (size)
463 return;
464
465 etp_maybe_start_thread ();
466
467 s_epipe_wait (&respipe);
113 } 468 }
114} 469}
115 470
116static int 471static int poll_cb (void)
117poll_cb ()
118{ 472{
119 dSP;
120 int count = 0;
121 int do_croak = 0;
122 aio_req req;
123
124 for (;;) 473 for (;;)
125 { 474 {
126 pthread_mutex_lock (&reslock); 475 int res = eio_poll ();
127 req = ress;
128 476
129 if (req) 477 if (res > 0)
130 {
131 ress = req->next;
132
133 if (!ress)
134 {
135 /* read any signals sent by the worker threads */
136 char buf [32];
137 while (read (respipe [0], buf, 32) == 32)
138 ;
139
140 rese = 0;
141 }
142 }
143
144 pthread_mutex_unlock (&reslock);
145
146 if (!req)
147 break;
148
149 nreqs--;
150
151 if (req->type == REQ_QUIT)
152 started--;
153 else
154 {
155 int errorno = errno;
156 errno = req->errorno;
157
158 if (req->type == REQ_READ)
159 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
160
161 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
162 SvREADONLY_off (req->data);
163
164 if (req->statdata)
165 {
166 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
167 PL_laststatval = req->result;
168 PL_statcache = *(req->statdata);
169 }
170
171 ENTER;
172 PUSHMARK (SP);
173 XPUSHs (sv_2mortal (newSViv (req->result)));
174
175 if (req->type == REQ_OPEN)
176 {
177 /* convert fd to fh */
178 SV *fh;
179
180 PUTBACK;
181 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
182 SPAGAIN;
183
184 fh = SvREFCNT_inc (POPs);
185
186 PUSHMARK (SP);
187 XPUSHs (sv_2mortal (fh));
188 }
189
190 if (SvOK (req->callback))
191 {
192 PUTBACK;
193 call_sv (req->callback, G_VOID | G_EVAL);
194 SPAGAIN;
195
196 if (SvTRUE (ERRSV))
197 {
198 free_req (req);
199 croak (0); 478 croak (0);
200 }
201 }
202 479
203 LEAVE; 480 if (!max_outstanding || max_outstanding > eio_nreqs ())
481 return res;
204 482
205 errno = errorno; 483 poll_wait ();
206 count++;
207 }
208
209 free_req (req);
210 } 484 }
211
212 return count;
213}
214
215static void *aio_proc(void *arg);
216
217static void
218start_thread (void)
219{
220 sigset_t fullsigset, oldsigset;
221 pthread_t tid;
222 pthread_attr_t attr;
223
224 pthread_attr_init (&attr);
225 pthread_attr_setstacksize (&attr, STACKSIZE);
226 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
227
228 sigfillset (&fullsigset);
229 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
230
231 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
232 started++;
233
234 sigprocmask (SIG_SETMASK, &oldsigset, 0);
235}
236
237static void
238send_req (aio_req req)
239{
240 while (started < wanted && nreqs >= started)
241 start_thread ();
242
243 nreqs++;
244
245 pthread_mutex_lock (&reqlock);
246
247 req->next = 0;
248
249 if (reqe)
250 {
251 reqe->next = req;
252 reqe = req;
253 }
254 else
255 reqe = reqs = req;
256
257 pthread_cond_signal (&reqwait);
258 pthread_mutex_unlock (&reqlock);
259
260 if (nreqs > max_outstanding)
261 for (;;)
262 {
263 poll_cb ();
264
265 if (nreqs <= max_outstanding)
266 break;
267
268 poll_wait ();
269 }
270}
271
272static void
273end_thread (void)
274{
275 aio_req req;
276 Newz (0, req, 1, aio_cb);
277 req->type = REQ_QUIT;
278
279 send_req (req);
280}
281
282static void min_parallel (int nthreads)
283{
284 if (wanted < nthreads)
285 wanted = nthreads;
286}
287
288static void max_parallel (int nthreads)
289{
290 int cur = started;
291
292 if (wanted > nthreads)
293 wanted = nthreads;
294
295 while (cur > wanted)
296 {
297 end_thread ();
298 cur--;
299 }
300
301 while (started > wanted)
302 {
303 poll_wait ();
304 poll_cb ();
305 }
306}
307
308static void create_pipe ()
309{
310 if (pipe (respipe))
311 croak ("unable to initialize result pipe");
312
313 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
314 croak ("cannot set result pipe to nonblocking mode");
315
316 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
317 croak ("cannot set result pipe to nonblocking mode");
318}
319
320static void atfork_prepare (void)
321{
322 pthread_mutex_lock (&reqlock);
323 pthread_mutex_lock (&reslock);
324}
325
326static void atfork_parent (void)
327{
328 pthread_mutex_unlock (&reslock);
329 pthread_mutex_unlock (&reqlock);
330} 485}
331 486
332static void atfork_child (void) 487static void atfork_child (void)
333{ 488{
334 aio_req prv;
335
336 started = 0;
337
338 while (reqs)
339 {
340 prv = reqs;
341 reqs = prv->next;
342 free_req (prv);
343 }
344
345 reqs = reqe = 0;
346
347 while (ress)
348 {
349 prv = ress;
350 ress = prv->next;
351 free_req (prv);
352 }
353
354 ress = rese = 0;
355
356 close (respipe [0]);
357 close (respipe [1]);
358 create_pipe (); 489 create_respipe ();
359
360 atfork_parent ();
361} 490}
362 491
363/*****************************************************************************/ 492static SV *
364/* work around various missing functions */ 493get_cb (SV *cb_sv)
365
366#if !HAVE_PREADWRITE
367# define pread aio_pread
368# define pwrite aio_pwrite
369
370/*
371 * make our pread/pwrite safe against themselves, but not against
372 * normal read/write by using a mutex. slows down execution a lot,
373 * but that's your problem, not mine.
374 */
375static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
376
377static ssize_t
378pread (int fd, void *buf, size_t count, off_t offset)
379{ 494{
380 ssize_t res; 495 SvGETMAGIC (cb_sv);
381 off_t ooffset; 496 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
382
383 pthread_mutex_lock (&iolock);
384 ooffset = lseek (fd, 0, SEEK_CUR);
385 lseek (fd, offset, SEEK_SET);
386 res = read (fd, buf, count);
387 lseek (fd, ooffset, SEEK_SET);
388 pthread_mutex_unlock (&iolock);
389
390 return res;
391} 497}
392 498
393static ssize_t 499#define dREQ \
394pwrite (int fd, void *buf, size_t count, off_t offset) 500 SV *cb_cv; \
395{ 501 aio_req req; \
396 ssize_t res; 502 int req_pri = next_pri; \
397 off_t ooffset; 503 next_pri = EIO_PRI_DEFAULT; \
504 \
505 cb_cv = get_cb (callback); \
506 \
507 Newz (0, req, 1, eio_req); \
508 if (!req) \
509 croak ("out of memory during eio_req allocation"); \
510 \
511 req->callback = SvREFCNT_inc (cb_cv); \
512 req->pri = req_pri
398 513
399 pthread_mutex_lock (&iolock); 514#define REQ_SEND \
400 ooffset = lseek (fd, 0, SEEK_CUR); 515 PUTBACK; \
401 lseek (fd, offset, SEEK_SET); 516 req_submit (req); \
402 res = write (fd, buf, count); 517 SPAGAIN; \
403 lseek (fd, offset, SEEK_SET); 518 \
404 pthread_mutex_unlock (&iolock); 519 if (GIMME_V != G_VOID) \
520 XPUSHs (req_sv (req, aio_req_stash));
405 521
406 return res; 522MODULE = IO::AIO PACKAGE = IO::AIO
407} 523
524PROTOTYPES: ENABLE
525
526BOOT:
527{
528 static const struct {
529 const char *name;
530 IV iv;
531 } *civ, const_iv[] = {
532# define const_iv(name, value) { # name, (IV) value },
533# define const_eio(name) { # name, (IV) EIO_ ## name },
534 const_iv (EXDEV , EXDEV)
535 const_iv (ENOSYS , ENOSYS)
536 const_iv (O_RDONLY, O_RDONLY)
537 const_iv (O_WRONLY, O_WRONLY)
538 const_iv (O_CREAT , O_CREAT)
539 const_iv (O_TRUNC , O_TRUNC)
540#ifndef _WIN32
541 const_iv (S_IFIFO , S_IFIFO)
408#endif 542#endif
543 const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
544 const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
545 const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
546 const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
547 const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
548 const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
409 549
410#if !HAVE_FDATASYNC 550 const_eio (MS_ASYNC)
411# define fdatasync fsync 551 const_eio (MS_INVALIDATE)
412#endif 552 const_eio (MS_SYNC)
413 553
414#if !HAVE_READAHEAD 554 const_eio (MT_MODIFY)
415# define readahead aio_readahead
416 555
417static char readahead_buf[4096]; 556 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
557 const_eio (SYNC_FILE_RANGE_WRITE)
558 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
418 559
419static ssize_t 560 const_eio (READDIR_DENTS)
420readahead (int fd, off_t offset, size_t count) 561 const_eio (READDIR_DIRS_FIRST)
421{ 562 const_eio (READDIR_STAT_ORDER)
422 while (count > 0) 563 const_eio (READDIR_FOUND_UNKNOWN)
423 {
424 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
425 564
426 pread (fd, readahead_buf, len, offset); 565 const_eio (DT_UNKNOWN)
427 offset += len; 566 const_eio (DT_FIFO)
428 count -= len; 567 const_eio (DT_CHR)
429 } 568 const_eio (DT_DIR)
430 569 const_eio (DT_BLK)
431 errno = 0; 570 const_eio (DT_REG)
432} 571 const_eio (DT_LNK)
433#endif 572 const_eio (DT_SOCK)
434 573 const_eio (DT_WHT)
435/* sendfile always needs emulation */
436static ssize_t
437sendfile_ (int ofd, int ifd, off_t offset, size_t count)
438{
439 ssize_t res;
440
441 if (!count)
442 return 0;
443
444#if __linux
445 res = sendfile (ofd, ifd, &offset, count);
446
447#elif __freebsd
448 /*
449 * Of course, the freebsd sendfile is a dire hack with no thoughts
450 * wasted on making it similar to other i/o functions.
451 */
452 {
453 off_t sbytes;
454 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
455
456 if (!res && errno == EAGAIN)
457 /* maybe on others, too, as usual, the manpage leaves you guessing */
458 res = sbytes;
459 } 574 };
460 575
461#elif __hpux 576 aio_stash = gv_stashpv ("IO::AIO" , 1);
462 res = sendfile (ofd, ifd, offset, count, 0, 0); 577 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
578 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
463 579
464#else 580 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
465 res = -1; 581 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
466 errno = ENOSYS;
467#endif
468 582
469 if (res < 0 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK))
470 {
471 /* emulate sendfile. this is a major pain in the ass */
472 char *buf = malloc (4096);
473 res = 0;
474
475 for (;;)
476 {
477 ssize_t cnt;
478
479 cnt = pread (ifd, buf, 4096, offset);
480
481 if (cnt <= 0)
482 {
483 if (cnt && !res) res = -1;
484 break;
485 }
486
487 cnt = write (ofd, buf, cnt);
488
489 if (cnt <= 0)
490 {
491 if (cnt && !res) res = -1;
492 break;
493 }
494
495 offset += cnt;
496 res += cnt;
497 }
498
499 {
500 int errorno = errno;
501 free (buf);
502 errno = errorno;
503 }
504 }
505
506 return res;
507}
508
509/*****************************************************************************/
510
511static void *
512aio_proc (void *thr_arg)
513{
514 aio_req req;
515 int type;
516
517 do
518 {
519 pthread_mutex_lock (&reqlock);
520
521 for (;;)
522 {
523 req = reqs;
524
525 if (reqs)
526 {
527 reqs = reqs->next;
528 if (!reqs) reqe = 0;
529 }
530
531 if (req)
532 break;
533
534 pthread_cond_wait (&reqwait, &reqlock);
535 }
536
537 pthread_mutex_unlock (&reqlock);
538
539 errno = 0; /* strictly unnecessary */
540
541 type = req->type;
542
543 switch (type)
544 {
545 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
546 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
547
548 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
549 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
550
551 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
552 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
553 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
554
555 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
556 case REQ_CLOSE: req->result = close (req->fd); break;
557 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
558 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
559 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
560
561 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
562 case REQ_FSYNC: req->result = fsync (req->fd); break;
563
564 case REQ_QUIT:
565 break;
566
567 default:
568 req->result = ENOSYS;
569 break;
570 }
571
572 req->errorno = errno;
573
574 pthread_mutex_lock (&reslock);
575
576 req->next = 0;
577
578 if (rese)
579 {
580 rese->next = req;
581 rese = req;
582 }
583 else
584 {
585 rese = ress = req;
586
587 /* write a dummy byte to the pipe so fh becomes ready */
588 write (respipe [1], &respipe, 1);
589 }
590
591 pthread_mutex_unlock (&reslock);
592 }
593 while (type != REQ_QUIT);
594
595 return 0;
596}
597
598#define dREQ \
599 aio_req req; \
600 \
601 if (SvOK (callback) && !SvROK (callback)) \
602 croak ("clalback must be undef or of reference type"); \
603 \
604 Newz (0, req, 1, aio_cb); \
605 if (!req) \
606 croak ("out of memory during aio_req allocation"); \
607 \
608 req->callback = newSVsv (callback);
609
610MODULE = IO::AIO PACKAGE = IO::AIO
611
612PROTOTYPES: ENABLE
613
614BOOT:
615{
616 create_pipe (); 583 create_respipe ();
617 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
618}
619 584
585 if (eio_init (want_poll, done_poll) < 0)
586 croak ("IO::AIO: unable to initialise eio library");
587
588 /* atfork child called in fifo order, so before eio's handler */
589 X_THREAD_ATFORK (0, 0, atfork_child);
590}
591
620void 592void
621min_parallel(nthreads) 593max_poll_reqs (int nreqs)
622 int nthreads
623 PROTOTYPE: $ 594 PROTOTYPE: $
595 CODE:
596 eio_set_max_poll_reqs (nreqs);
624 597
625void 598void
626max_parallel(nthreads) 599max_poll_time (double nseconds)
627 int nthreads
628 PROTOTYPE: $ 600 PROTOTYPE: $
629
630int
631max_outstanding(nreqs)
632 int nreqs
633 PROTOTYPE: $
634 CODE: 601 CODE:
635 RETVAL = max_outstanding; 602 eio_set_max_poll_time (nseconds);
603
604void
605min_parallel (int nthreads)
606 PROTOTYPE: $
607 CODE:
608 eio_set_min_parallel (nthreads);
609
610void
611max_parallel (int nthreads)
612 PROTOTYPE: $
613 CODE:
614 eio_set_max_parallel (nthreads);
615
616void
617max_idle (int nthreads)
618 PROTOTYPE: $
619 CODE:
620 eio_set_max_idle (nthreads);
621
622void
623max_outstanding (int maxreqs)
624 PROTOTYPE: $
625 CODE:
636 max_outstanding = nreqs; 626 max_outstanding = maxreqs;
637 627
638void 628void
639aio_open(pathname,flags,mode,callback=&PL_sv_undef) 629aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
640 SV * pathname
641 int flags
642 int mode
643 SV * callback
644 PROTOTYPE: $$$;$ 630 PROTOTYPE: $$$;$
645 CODE: 631 PPCODE:
646{ 632{
647 dREQ; 633 dREQ;
648 634
649 req->type = REQ_OPEN; 635 req->type = EIO_OPEN;
650 req->data = newSVsv (pathname); 636 req->sv1 = newSVsv (pathname);
651 req->dataptr = SvPVbyte_nolen (req->data); 637 req->ptr1 = SvPVbyte_nolen (req->sv1);
652 req->fd = flags; 638 req->int1 = flags;
653 req->mode = mode; 639 req->int2 = mode;
654 640
655 send_req (req); 641 REQ_SEND;
656} 642}
657 643
658void 644void
659aio_close(fh,callback=&PL_sv_undef) 645aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
660 SV * fh
661 SV * callback
662 PROTOTYPE: $;$ 646 PROTOTYPE: $;$
663 ALIAS: 647 ALIAS:
664 aio_close = REQ_CLOSE
665 aio_fsync = REQ_FSYNC 648 aio_fsync = EIO_FSYNC
666 aio_fdatasync = REQ_FDATASYNC 649 aio_fdatasync = EIO_FDATASYNC
667 CODE: 650 PPCODE:
668{ 651{
652 int fd = s_fileno_croak (fh, 0);
669 dREQ; 653 dREQ;
670 654
671 req->type = ix; 655 req->type = ix;
672 req->fh = newSVsv (fh); 656 req->sv1 = newSVsv (fh);
673 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 657 req->int1 = fd;
674 658
675 send_req (req); 659 REQ_SEND (req);
676} 660}
677 661
678void 662void
663aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
664 PROTOTYPE: $$$$;$
665 PPCODE:
666{
667 int fd = s_fileno_croak (fh, 0);
668 dREQ;
669
670 req->type = EIO_SYNC_FILE_RANGE;
671 req->sv1 = newSVsv (fh);
672 req->int1 = fd;
673 req->offs = offset;
674 req->size = nbytes;
675 req->int2 = flags;
676
677 REQ_SEND (req);
678}
679
680void
681aio_close (SV *fh, SV *callback=&PL_sv_undef)
682 PROTOTYPE: $;$
683 PPCODE:
684{
685 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
686 int fd = s_fileno_croak (fh, 0);
687 dREQ;
688
689 if (close_pipe < 0)
690 {
691 int pipefd [2];
692
693 if (pipe (pipefd) < 0
694 || close (pipefd [1]) < 0
695 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
696 abort (); /*D*/
697
698 close_pipe = pipefd [0];
699 }
700
701 req->type = EIO_DUP2;
702 req->int1 = close_pipe;
703 req->sv2 = newSVsv (fh);
704 req->int2 = fd;
705
706 REQ_SEND (req);
707}
708
709void
679aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 710aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
680 SV * fh
681 UV offset
682 UV length
683 SV * data
684 UV dataoffset
685 SV * callback
686 ALIAS: 711 ALIAS:
687 aio_read = REQ_READ 712 aio_read = EIO_READ
688 aio_write = REQ_WRITE 713 aio_write = EIO_WRITE
689 PROTOTYPE: $$$$$;$ 714 PROTOTYPE: $$$$$;$
690 CODE: 715 PPCODE:
691{ 716{
692 aio_req req;
693 STRLEN svlen; 717 STRLEN svlen;
718 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
694 char *svptr = SvPVbyte (data, svlen); 719 char *svptr = SvPVbyte (data, svlen);
695 720 UV len = SvUV (length);
696 SvUPGRADE (data, SVt_PV);
697 SvPOK_on (data);
698 721
699 if (dataoffset < 0) 722 if (dataoffset < 0)
700 dataoffset += svlen; 723 dataoffset += svlen;
701 724
702 if (dataoffset < 0 || dataoffset > svlen) 725 if (dataoffset < 0 || dataoffset > svlen)
703 croak ("data offset outside of string"); 726 croak ("dataoffset outside of data scalar");
704 727
705 if (ix == REQ_WRITE) 728 if (ix == EIO_WRITE)
706 { 729 {
707 /* write: check length and adjust. */ 730 /* write: check length and adjust. */
708 if (length < 0 || length + dataoffset > svlen) 731 if (!SvOK (length) || len + dataoffset > svlen)
709 length = svlen - dataoffset; 732 len = svlen - dataoffset;
710 } 733 }
711 else 734 else
712 { 735 {
713 /* read: grow scalar as necessary */ 736 /* read: check type and grow scalar as necessary */
737 SvUPGRADE (data, SVt_PV);
714 svptr = SvGROW (data, length + dataoffset); 738 svptr = SvGROW (data, len + dataoffset + 1);
715 } 739 }
716
717 if (length < 0)
718 croak ("length must not be negative");
719 740
720 { 741 {
721 dREQ; 742 dREQ;
722 743
723 req->type = ix; 744 req->type = ix;
724 req->fh = newSVsv (fh); 745 req->sv1 = newSVsv (fh);
725 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 746 req->int1 = fd;
726 : IoOFP (sv_2io (fh))); 747 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
727 req->offset = offset; 748 req->size = len;
728 req->length = length;
729 req->data = SvREFCNT_inc (data); 749 req->sv2 = SvREFCNT_inc (data);
730 req->dataptr = (char *)svptr + dataoffset; 750 req->ptr2 = (char *)svptr + dataoffset;
751 req->stroffset = dataoffset;
731 752
732 if (!SvREADONLY (data)) 753 if (!SvREADONLY (data))
733 { 754 {
734 SvREADONLY_on (data); 755 SvREADONLY_on (data);
735 req->data2ptr = (void *)data; 756 req->flags |= FLAG_SV2_RO_OFF;
736 } 757 }
737 758
738 send_req (req); 759 REQ_SEND;
739 } 760 }
740} 761}
741 762
742void 763void
764aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
765 PROTOTYPE: $$;$
766 PPCODE:
767{
768 SV *data;
769 dREQ;
770
771 req->type = EIO_READLINK;
772 req->sv1 = newSVsv (path);
773 req->ptr1 = SvPVbyte_nolen (req->sv1);
774
775 REQ_SEND;
776}
777
778void
743aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 779aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
744 SV * out_fh
745 SV * in_fh
746 UV in_offset
747 UV length
748 SV * callback
749 PROTOTYPE: $$$$;$ 780 PROTOTYPE: $$$$;$
750 CODE: 781 PPCODE:
751{ 782{
783 int ifd = s_fileno_croak (in_fh , 0);
784 int ofd = s_fileno_croak (out_fh, 1);
752 dREQ; 785 dREQ;
753 786
754 req->type = REQ_SENDFILE; 787 req->type = EIO_SENDFILE;
755 req->fh = newSVsv (out_fh); 788 req->sv1 = newSVsv (out_fh);
756 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 789 req->int1 = ofd;
757 req->fh2 = newSVsv (in_fh); 790 req->sv2 = newSVsv (in_fh);
758 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 791 req->int2 = ifd;
759 req->offset = in_offset; 792 req->offs = in_offset;
760 req->length = length; 793 req->size = length;
761 794
762 send_req (req); 795 REQ_SEND;
763} 796}
764 797
765void 798void
766aio_readahead(fh,offset,length,callback=&PL_sv_undef) 799aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
767 SV * fh
768 UV offset
769 IV length
770 SV * callback
771 PROTOTYPE: $$$;$ 800 PROTOTYPE: $$$;$
772 CODE: 801 PPCODE:
773{ 802{
803 int fd = s_fileno_croak (fh, 0);
774 dREQ; 804 dREQ;
775 805
776 req->type = REQ_READAHEAD; 806 req->type = EIO_READAHEAD;
777 req->fh = newSVsv (fh); 807 req->sv1 = newSVsv (fh);
778 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 808 req->int1 = fd;
779 req->offset = offset; 809 req->offs = offset;
780 req->length = length; 810 req->size = length;
781 811
782 send_req (req); 812 REQ_SEND;
783} 813}
784 814
785void 815void
786aio_stat(fh_or_path,callback=&PL_sv_undef) 816aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
787 SV * fh_or_path
788 SV * callback
789 ALIAS: 817 ALIAS:
790 aio_stat = REQ_STAT 818 aio_stat = EIO_STAT
791 aio_lstat = REQ_LSTAT 819 aio_lstat = EIO_LSTAT
792 CODE: 820 PPCODE:
793{ 821{
794 dREQ; 822 dREQ;
795 823
796 New (0, req->statdata, 1, Stat_t); 824 req->sv1 = newSVsv (fh_or_path);
797 if (!req->statdata)
798 {
799 free_req (req);
800 croak ("out of memory during aio_req->statdata allocation");
801 }
802 825
803 if (SvPOK (fh_or_path)) 826 if (SvPOK (req->sv1))
804 { 827 {
805 req->type = ix; 828 req->type = ix;
806 req->data = newSVsv (fh_or_path);
807 req->dataptr = SvPVbyte_nolen (req->data); 829 req->ptr1 = SvPVbyte_nolen (req->sv1);
808 } 830 }
809 else 831 else
810 { 832 {
811 req->type = REQ_FSTAT; 833 req->type = EIO_FSTAT;
812 req->fh = newSVsv (fh_or_path);
813 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 834 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
835 }
836
837 REQ_SEND;
838}
839
840void
841aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
842 PPCODE:
843{
844 dREQ;
845
846 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
847 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
848 req->sv1 = newSVsv (fh_or_path);
849
850 if (SvPOK (req->sv1))
814 } 851 {
852 req->type = EIO_UTIME;
853 req->ptr1 = SvPVbyte_nolen (req->sv1);
854 }
855 else
856 {
857 req->type = EIO_FUTIME;
858 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
859 }
815 860
816 send_req (req); 861 REQ_SEND;
817} 862}
818 863
819void 864void
865aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
866 PPCODE:
867{
868 dREQ;
869
870 req->sv1 = newSVsv (fh_or_path);
871 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
872
873 if (SvPOK (req->sv1))
874 {
875 req->type = EIO_TRUNCATE;
876 req->ptr1 = SvPVbyte_nolen (req->sv1);
877 }
878 else
879 {
880 req->type = EIO_FTRUNCATE;
881 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
882 }
883
884 REQ_SEND;
885}
886
887void
888aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
889 ALIAS:
890 aio_chmod = EIO_CHMOD
891 aio_mkdir = EIO_MKDIR
892 PPCODE:
893{
894 dREQ;
895
896 req->int2 = mode;
897 req->sv1 = newSVsv (fh_or_path);
898
899 if (SvPOK (req->sv1))
900 {
901 req->type = ix;
902 req->ptr1 = SvPVbyte_nolen (req->sv1);
903 }
904 else
905 {
906 req->type = EIO_FCHMOD;
907 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
908 }
909
910 REQ_SEND;
911}
912
913void
914aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
915 PPCODE:
916{
917 dREQ;
918
919 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
920 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
921 req->sv1 = newSVsv (fh_or_path);
922
923 if (SvPOK (req->sv1))
924 {
925 req->type = EIO_CHOWN;
926 req->ptr1 = SvPVbyte_nolen (req->sv1);
927 }
928 else
929 {
930 req->type = EIO_FCHOWN;
931 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
932 }
933
934 REQ_SEND;
935}
936
937void
938aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
939 PPCODE:
940{
941 dREQ;
942
943 req->type = EIO_READDIR;
944 req->sv1 = newSVsv (pathname);
945 req->ptr1 = SvPVbyte_nolen (req->sv1);
946 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
947
948 if (flags & EIO_READDIR_DENTS)
949 req->int1 |= EIO_READDIR_CUSTOM2;
950
951 REQ_SEND;
952}
953
954void
820aio_unlink(pathname,callback=&PL_sv_undef) 955aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
821 SV * pathname
822 SV * callback
823 ALIAS: 956 ALIAS:
824 aio_unlink = REQ_UNLINK 957 aio_unlink = EIO_UNLINK
825 aio_rmdir = REQ_RMDIR 958 aio_rmdir = EIO_RMDIR
959 aio_readdir = EIO_READDIR
826 CODE: 960 PPCODE:
827{ 961{
828 dREQ; 962 dREQ;
829 963
830 req->type = ix; 964 req->type = ix;
831 req->data = newSVsv (pathname); 965 req->sv1 = newSVsv (pathname);
832 req->dataptr = SvPVbyte_nolen (req->data); 966 req->ptr1 = SvPVbyte_nolen (req->sv1);
967
968 REQ_SEND;
969}
970
971void
972aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
973 ALIAS:
974 aio_link = EIO_LINK
975 aio_symlink = EIO_SYMLINK
976 aio_rename = EIO_RENAME
977 PPCODE:
978{
979 dREQ;
833 980
834 send_req (req); 981 req->type = ix;
835} 982 req->sv1 = newSVsv (oldpath);
836 983 req->ptr1 = SvPVbyte_nolen (req->sv1);
837void 984 req->sv2 = newSVsv (newpath);
838aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 985 req->ptr2 = SvPVbyte_nolen (req->sv2);
839 SV * oldpath
840 SV * newpath
841 SV * callback
842 CODE:
843{
844 dREQ;
845 986
846 req->type = REQ_SYMLINK; 987 REQ_SEND;
847 req->fh = newSVsv (oldpath); 988}
848 req->data2ptr = SvPVbyte_nolen (req->fh); 989
849 req->data = newSVsv (newpath); 990void
850 req->dataptr = SvPVbyte_nolen (req->data); 991aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
992 PPCODE:
993{
994 dREQ;
851 995
852 send_req (req); 996 req->type = EIO_MKNOD;
997 req->sv1 = newSVsv (pathname);
998 req->ptr1 = SvPVbyte_nolen (req->sv1);
999 req->int2 = (mode_t)mode;
1000 req->offs = dev;
1001
1002 REQ_SEND;
853} 1003}
854 1004
855void 1005void
1006aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1007 ALIAS:
1008 aio_mtouch = EIO_MTOUCH
1009 aio_msync = EIO_MSYNC
1010 PROTOTYPE: $$$$;$
1011 PPCODE:
1012{
1013 STRLEN svlen;
1014 UV len = SvUV (length);
1015 char *svptr = SvPVbyte (data, svlen);
1016
1017 if (offset < 0)
1018 offset += svlen;
1019
1020 if (offset < 0 || offset > svlen)
1021 croak ("offset outside of scalar");
1022
1023 if (!SvOK (length) || len + offset > svlen)
1024 len = svlen - offset;
1025
1026 {
1027 dREQ;
1028
1029 req->type = ix;
1030 req->size = len;
1031 req->sv2 = SvREFCNT_inc (data);
1032 req->ptr2 = (char *)svptr + offset;
1033 req->int1 = flags;
1034
1035 REQ_SEND;
1036 }
1037}
1038
1039void
1040aio_busy (double delay, SV *callback=&PL_sv_undef)
1041 PPCODE:
1042{
1043 dREQ;
1044
1045 req->type = EIO_BUSY;
1046 req->nv1 = delay < 0. ? 0. : delay;
1047
1048 REQ_SEND;
1049}
1050
1051void
1052aio_group (SV *callback=&PL_sv_undef)
1053 PROTOTYPE: ;$
1054 PPCODE:
1055{
1056 dREQ;
1057
1058 req->type = EIO_GROUP;
1059
1060 req_submit (req);
1061 XPUSHs (req_sv (req, aio_grp_stash));
1062}
1063
1064void
1065aio_nop (SV *callback=&PL_sv_undef)
1066 ALIAS:
1067 aio_nop = EIO_NOP
1068 aio_sync = EIO_SYNC
1069 PPCODE:
1070{
1071 dREQ;
1072
1073 req->type = ix;
1074
1075 REQ_SEND;
1076}
1077
1078int
1079aioreq_pri (int pri = 0)
1080 PROTOTYPE: ;$
1081 CODE:
1082 RETVAL = next_pri;
1083 if (items > 0)
1084 {
1085 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1086 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1087 next_pri = pri;
1088 }
1089 OUTPUT:
1090 RETVAL
1091
1092void
1093aioreq_nice (int nice = 0)
1094 CODE:
1095 nice = next_pri - nice;
1096 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1097 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1098 next_pri = nice;
1099
1100void
856flush() 1101flush ()
857 PROTOTYPE: 1102 PROTOTYPE:
858 CODE: 1103 CODE:
859 while (nreqs) 1104 while (eio_nreqs ())
860 { 1105 {
861 poll_wait (); 1106 poll_wait ();
862 poll_cb (); 1107 poll_cb ();
863 } 1108 }
864 1109
865void 1110int
866poll() 1111poll()
867 PROTOTYPE: 1112 PROTOTYPE:
868 CODE: 1113 CODE:
869 if (nreqs)
870 {
871 poll_wait (); 1114 poll_wait ();
872 poll_cb (); 1115 RETVAL = poll_cb ();
873 } 1116 OUTPUT:
1117 RETVAL
874 1118
875int 1119int
876poll_fileno() 1120poll_fileno()
877 PROTOTYPE: 1121 PROTOTYPE:
878 CODE: 1122 CODE:
879 RETVAL = respipe [0]; 1123 RETVAL = s_epipe_fd (&respipe);
880 OUTPUT: 1124 OUTPUT:
881 RETVAL 1125 RETVAL
882 1126
883int 1127int
884poll_cb(...) 1128poll_cb(...)
890 1134
891void 1135void
892poll_wait() 1136poll_wait()
893 PROTOTYPE: 1137 PROTOTYPE:
894 CODE: 1138 CODE:
895 if (nreqs)
896 poll_wait (); 1139 poll_wait ();
897 1140
898int 1141int
899nreqs() 1142nreqs()
900 PROTOTYPE: 1143 PROTOTYPE:
901 CODE: 1144 CODE:
902 RETVAL = nreqs; 1145 RETVAL = eio_nreqs ();
903 OUTPUT: 1146 OUTPUT:
904 RETVAL 1147 RETVAL
905 1148
1149int
1150nready()
1151 PROTOTYPE:
1152 CODE:
1153 RETVAL = eio_nready ();
1154 OUTPUT:
1155 RETVAL
1156
1157int
1158npending()
1159 PROTOTYPE:
1160 CODE:
1161 RETVAL = eio_npending ();
1162 OUTPUT:
1163 RETVAL
1164
1165int
1166nthreads()
1167 PROTOTYPE:
1168 CODE:
1169 RETVAL = eio_nthreads ();
1170 OUTPUT:
1171 RETVAL
1172
1173int
1174fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1175 PROTOTYPE: $$$$
1176 CODE:
1177#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1178 RETVAL = posix_fadvise (fh, offset, length, advice);
1179#else
1180 RETVAL = errno = ENOSYS;
1181#endif
1182 OUTPUT:
1183 RETVAL
1184
1185ssize_t
1186sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1187 PROTOTYPE: $$$$
1188 CODE:
1189 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1190 OUTPUT:
1191 RETVAL
1192
1193void _on_next_submit (SV *cb)
1194 CODE:
1195 SvREFCNT_dec (on_next_submit);
1196 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1197
1198PROTOTYPES: DISABLE
1199
1200MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1201
1202void
1203cancel (aio_req_ornot req)
1204 CODE:
1205 eio_cancel (req);
1206
1207void
1208cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1209 PPCODE:
1210{
1211 if (GIMME_V != G_VOID)
1212 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1213
1214 if (items > 1)
1215 {
1216 SV *cb_cv =get_cb (callback);
1217
1218 SvREFCNT_dec (req->callback);
1219 req->callback = SvREFCNT_inc (cb_cv);
1220 }
1221}
1222
1223MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1224
1225void
1226add (aio_req grp, ...)
1227 PPCODE:
1228{
1229 int i;
1230
1231 if (grp->int1 == 2)
1232 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1233
1234 for (i = 1; i < items; ++i )
1235 {
1236 aio_req req;
1237
1238 if (GIMME_V != G_VOID)
1239 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1240
1241 req = SvAIO_REQ (ST (i));
1242
1243 if (req)
1244 eio_grp_add (grp, req);
1245 }
1246}
1247
1248void
1249cancel_subs (aio_req_ornot req)
1250 CODE:
1251 req_cancel_subs (req);
1252
1253void
1254result (aio_req grp, ...)
1255 CODE:
1256{
1257 int i;
1258 AV *av;
1259
1260 grp->errorno = errno;
1261
1262 av = newAV ();
1263 av_extend (av, items - 1);
1264
1265 for (i = 1; i < items; ++i )
1266 av_push (av, newSVsv (ST (i)));
1267
1268 SvREFCNT_dec (grp->sv1);
1269 grp->sv1 = (SV *)av;
1270}
1271
1272void
1273errno (aio_req grp, int errorno = errno)
1274 CODE:
1275 grp->errorno = errorno;
1276
1277void
1278limit (aio_req grp, int limit)
1279 CODE:
1280 eio_grp_limit (grp, limit);
1281
1282void
1283feed (aio_req grp, SV *callback=&PL_sv_undef)
1284 CODE:
1285{
1286 SvREFCNT_dec (grp->sv2);
1287 grp->sv2 = newSVsv (callback);
1288 grp->feed = aio_grp_feed;
1289
1290 if (grp->int2 <= 0)
1291 grp->int2 = 2;
1292
1293 eio_grp_limit (grp, grp->int2);
1294}
1295

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