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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.36 by root, Tue Aug 23 01:18:04 2005 UTC vs.
Revision 1.149 by root, Tue Jun 30 07:33:58 2009 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
10#include <pthread.h> 9#include <stddef.h>
11 10#include <stdlib.h>
11#include <errno.h>
12#include <sys/types.h> 12#include <sys/types.h>
13#include <sys/stat.h> 13#include <sys/stat.h>
14
15#include <unistd.h> 14#include <limits.h>
16#include <fcntl.h> 15#include <fcntl.h>
17#include <signal.h>
18#include <sched.h> 16#include <sched.h>
19 17
20#if HAVE_SENDFILE 18/* perl namespace pollution */
21# if __linux 19#undef VERSION
22# include <sys/sendfile.h> 20
23# elif __freebsd 21#ifdef _WIN32
24# include <sys/socket.h> 22
25# include <sys/uio.h> 23# define EIO_STRUCT_DIRENT Direntry_t
26# elif __hpux 24# undef malloc
27# include <sys/socket.h> 25# undef free
28# elif __solaris /* not yet */ 26
29# include <sys/sendfile.h> 27// perl overrides all those nice win32 functions
28# undef open
29# undef read
30# undef write
31# undef send
32# undef recv
33# undef stat
34# undef fstat
35# define lstat stat
36# undef truncate
37# undef ftruncate
38# undef open
39# undef close
40# undef unlink
41# undef rmdir
42# undef rename
43# undef lseek
44
45# define chown(a,b,c) (errno = ENOSYS, -1)
46# define fchown(a,b,c) (errno = ENOSYS, -1)
47# define fchmod(a,b) (errno = ENOSYS, -1)
48# define symlink(a,b) (errno = ENOSYS, -1)
49# define readlink(a,b,c) (errno = ENOSYS, -1)
50# define mknod(a,b,c) (errno = ENOSYS, -1)
51# define truncate(a,b) (errno = ENOSYS, -1)
52# define ftruncate(fd,o) chsize ((fd), (o))
53# define fsync(fd) _commit (fd)
54# define opendir(fd) (errno = ENOSYS, 0)
55# define readdir(fd) (errno = ENOSYS, -1)
56# define closedir(fd) (errno = ENOSYS, -1)
57# define mkdir(a,b) mkdir (a)
58
30# else 59#else
31# error sendfile support requested but not available 60
32# endif 61# include <sys/time.h>
62# include <sys/select.h>
63# include <unistd.h>
64# include <utime.h>
65# include <signal.h>
66# define EIO_STRUCT_DIRENT struct dirent
67
33#endif 68#endif
34 69
35#if __ia64 70/* perl stupidly overrides readdir and maybe others */
36# define STACKSIZE 65536 71/* with thread-unsafe versions, imagine that :( */
72#undef readdir
73#undef opendir
74#undef closedir
75
76#define EIO_STRUCT_STAT Stat_t
77
78/* use NV for 32 bit perls as it allows larger offsets */
79#if IVSIZE >= 8
80# define VAL64 IV
81# define SvVAL64 SvIV
82# define newSVval64 newSViv
37#else 83#else
38# define STACKSIZE 4096 84# define VAL64 NV
85# define SvVAL64 SvNV
86# define newSVval64 newSVnv
39#endif 87#endif
40 88
89/*****************************************************************************/
90
91#if __GNUC__ >= 3
92# define expect(expr,value) __builtin_expect ((expr),(value))
93#else
94# define expect(expr,value) (expr)
95#endif
96
97#define expect_false(expr) expect ((expr) != 0, 0)
98#define expect_true(expr) expect ((expr) != 0, 1)
99
100/*****************************************************************************/
101
102static HV *stash;
103typedef SV SV8; /* byte-sv, used for argument-checking */
104typedef int aio_rfd; /* read file desriptor */
105typedef int aio_wfd; /* write file descriptor */
106
107#define AIO_REQ_KLASS "IO::AIO::REQ"
108#define AIO_GRP_KLASS "IO::AIO::GRP"
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
41enum { 150enum {
42 REQ_QUIT, 151 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
43 REQ_OPEN, REQ_CLOSE,
44 REQ_READ, REQ_WRITE, REQ_READAHEAD,
45 REQ_SENDFILE,
46 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
47 REQ_FSYNC, REQ_FDATASYNC,
48 REQ_UNLINK, REQ_RMDIR,
49 REQ_SYMLINK,
50}; 152};
51 153
52typedef struct aio_cb { 154#include "libeio/eio.c"
53 struct aio_cb *volatile next;
54 155
55 int type;
56
57 int fd, fd2;
58 off_t offset;
59 size_t length;
60 ssize_t result;
61 mode_t mode; /* open */
62 int errorno;
63 SV *data, *callback;
64 SV *fh, *fh2;
65 void *dataptr, *data2ptr;
66 STRLEN dataoffset;
67
68 Stat_t *statdata;
69} aio_cb;
70
71typedef aio_cb *aio_req; 156typedef eio_req *aio_req;
157typedef eio_req *aio_req_ornot;
72 158
73static int started, wanted; 159static SV *on_next_submit;
74static volatile int nreqs; 160static int next_pri = EIO_PRI_DEFAULT;
75static int max_outstanding = 1<<30; 161static int max_outstanding;
76static int respipe [2];
77 162
78static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 163static int respipe_osf [2], respipe [2] = { -1, -1 };
79static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
80static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
81 164
82static volatile aio_req reqs, reqe; /* queue start, queue end */ 165static void req_destroy (aio_req req);
83static volatile aio_req ress, rese; /* queue start, queue end */
84
85static void free_req (aio_req req) 166static void req_cancel (aio_req req);
86{
87 if (req->data)
88 SvREFCNT_dec (req->data);
89 167
168static void want_poll (void)
169{
170 /* write a dummy byte to the pipe so fh becomes ready */
171 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
172}
173
174static void done_poll (void)
175{
176 /* read any signals sent by the worker threads */
177 char buf [4];
178 while (respipe_read (respipe [0], buf, 4) == 4)
179 ;
180}
181
182/* must be called at most once */
183static SV *req_sv (aio_req req, const char *klass)
184{
185 if (!req->self)
186 {
187 req->self = (SV *)newHV ();
188 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
189 }
190
191 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
192}
193
194static aio_req SvAIO_REQ (SV *sv)
195{
196 MAGIC *mg;
197
198 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
199 croak ("object of class " AIO_REQ_KLASS " expected");
200
201 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
202
203 return mg ? (aio_req)mg->mg_ptr : 0;
204}
205
206static void aio_grp_feed (aio_req grp)
207{
208 if (grp->sv2 && SvOK (grp->sv2))
209 {
210 dSP;
211
212 ENTER;
213 SAVETMPS;
214 PUSHMARK (SP);
215 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
216 PUTBACK;
217 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
218 SPAGAIN;
219 FREETMPS;
220 LEAVE;
221 }
222}
223
224static void req_submit (eio_req *req)
225{
226 eio_submit (req);
227
228 if (expect_false (on_next_submit))
229 {
230 dSP;
231 SV *cb = sv_2mortal (on_next_submit);
232
233 on_next_submit = 0;
234
235 PUSHMARK (SP);
236 PUTBACK;
237 call_sv (cb, G_DISCARD | G_EVAL);
238 }
239}
240
241static int req_invoke (eio_req *req)
242{
243 dSP;
244
245 if (req->flags & FLAG_SV2_RO_OFF)
246 SvREADONLY_off (req->sv2);
247
248 if (!EIO_CANCELLED (req) && req->callback)
249 {
250 ENTER;
251 SAVETMPS;
252 PUSHMARK (SP);
253 EXTEND (SP, 1);
254
255 switch (req->type)
256 {
257 case EIO_READDIR:
258 {
259 SV *rv = &PL_sv_undef;
260
261 if (req->result >= 0)
262 {
263 int i;
264 char *names = (char *)req->ptr2;
265 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
266 AV *av = newAV ();
267
268 av_extend (av, req->result - 1);
269
270 for (i = 0; i < req->result; ++i)
271 {
272 if (req->int1 & EIO_READDIR_DENTS)
273 {
274 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
275
276 if (req->int1 & EIO_READDIR_CUSTOM2)
277 {
278 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
279 AV *avent = newAV ();
280
281 av_extend (avent, 2);
282
283 if (!sv_type [ent->type])
284 {
285 sv_type [ent->type] = newSViv (ent->type);
286 SvREADONLY_on (sv_type [ent->type]);
287 }
288
289 av_store (avent, 0, namesv);
290 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
291 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
292
293 av_store (av, i, newRV_noinc ((SV *)avent));
294 }
295 else
296 av_store (av, i, namesv);
297
298 ++ent;
299 }
300 else
301 {
302 SV *name = newSVpv (names, 0);
303 av_store (av, i, name);
304 names += SvCUR (name) + 1;
305 }
306 }
307
308 rv = sv_2mortal (newRV_noinc ((SV *)av));
309 }
310
311 PUSHs (rv);
312
313 if (req->int1 & EIO_READDIR_CUSTOM1)
314 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
315 }
316 break;
317
318 case EIO_OPEN:
319 {
320 /* convert fd to fh */
321 SV *fh = &PL_sv_undef;
322
323 if (req->result >= 0)
324 {
325 GV *gv = (GV *)sv_newmortal ();
326 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
327 char sym [64];
328 int symlen;
329
330 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
331 gv_init (gv, stash, sym, symlen, 0);
332
333 symlen = snprintf (
334 sym,
335 sizeof (sym),
336 "%s&=%d",
337 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
338 (int)req->result
339 );
340
341 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
342 fh = (SV *)gv;
343 }
344
345 PUSHs (fh);
346 }
347 break;
348
349 case EIO_GROUP:
350 req->int1 = 2; /* mark group as finished */
351
352 if (req->sv1)
353 {
354 int i;
355 AV *av = (AV *)req->sv1;
356
357 EXTEND (SP, AvFILL (av) + 1);
358 for (i = 0; i <= AvFILL (av); ++i)
359 PUSHs (*av_fetch (av, i, 0));
360 }
361 break;
362
363 case EIO_NOP:
364 case EIO_BUSY:
365 break;
366
367 case EIO_READLINK:
368 if (req->result > 0)
369 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
370 break;
371
372 case EIO_STAT:
373 case EIO_LSTAT:
374 case EIO_FSTAT:
375 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
376 PL_laststatval = req->result;
377 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
378 PUSHs (sv_2mortal (newSViv (req->result)));
379 break;
380
381 case EIO_READ:
382 {
383 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
384 *SvEND (req->sv2) = 0;
385 SvPOK_only (req->sv2);
386 SvSETMAGIC (req->sv2);
387 PUSHs (sv_2mortal (newSViv (req->result)));
388 }
389 break;
390
391 case EIO_DUP2:
392 if (req->result > 0)
393 req->result = 0;
394 /* FALLTHROUGH */
395
396 default:
397 PUSHs (sv_2mortal (newSViv (req->result)));
398 break;
399 }
400
401 errno = req->errorno;
402
403 PUTBACK;
404 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
405 SPAGAIN;
406
407 FREETMPS;
408 LEAVE;
409
410 PUTBACK;
411 }
412
413 return !!SvTRUE (ERRSV);
414}
415
416static void req_destroy (aio_req req)
417{
90 if (req->fh) 418 if (req->self)
419 {
420 sv_unmagic (req->self, PERL_MAGIC_ext);
91 SvREFCNT_dec (req->fh); 421 SvREFCNT_dec (req->self);
422 }
92 423
93 if (req->fh2) 424 SvREFCNT_dec (req->sv1);
94 SvREFCNT_dec (req->fh2); 425 SvREFCNT_dec (req->sv2);
95
96 if (req->statdata)
97 Safefree (req->statdata);
98
99 if (req->callback)
100 SvREFCNT_dec (req->callback); 426 SvREFCNT_dec (req->callback);
101 427
102 Safefree (req); 428 Safefree (req);
103} 429}
104 430
431static void req_cancel_subs (aio_req grp)
432{
433 aio_req sub;
434
435 if (grp->type != EIO_GROUP)
436 return;
437
438 SvREFCNT_dec (grp->sv2);
439 grp->sv2 = 0;
440
441 eio_grp_cancel (grp);
442}
443
444#ifdef USE_SOCKETS_AS_HANDLES
445# define TO_SOCKET(x) (win32_get_osfhandle (x))
446#else
447# define TO_SOCKET(x) (x)
448#endif
449
105static void 450static void
106poll_wait () 451create_respipe (void)
107{ 452{
108 if (nreqs && !ress) 453 int old_readfd = respipe [0];
454
455 if (respipe [1] >= 0)
456 respipe_close (TO_SOCKET (respipe [1]));
457
458#ifdef _WIN32
459 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
460#else
461 if (pipe (respipe))
462#endif
463 croak ("unable to initialize result pipe");
464
465 if (old_readfd >= 0)
109 { 466 {
110 fd_set rfd; 467 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
111 FD_ZERO(&rfd); 468 croak ("unable to initialize result pipe(2)");
112 FD_SET(respipe [0], &rfd);
113 469
114 select (respipe [0] + 1, &rfd, 0, 0, 0); 470 respipe_close (respipe [0]);
471 respipe [0] = old_readfd;
115 } 472 }
116}
117 473
118static int 474#ifdef _WIN32
119poll_cb () 475 int arg = 1;
120{ 476 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
121 dSP; 477 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
122 int count = 0; 478#else
123 int do_croak = 0; 479 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
124 aio_req req; 480 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
481#endif
482 croak ("unable to initialize result pipe(3)");
125 483
484 respipe_osf [0] = TO_SOCKET (respipe [0]);
485 respipe_osf [1] = TO_SOCKET (respipe [1]);
486}
487
488static void poll_wait (void)
489{
490 fd_set rfd;
491
492 while (eio_nreqs ())
493 {
494 int size;
495
496 X_LOCK (reslock);
497 size = res_queue.size;
498 X_UNLOCK (reslock);
499
500 if (size)
501 return;
502
503 etp_maybe_start_thread ();
504
505 FD_ZERO (&rfd);
506 FD_SET (respipe [0], &rfd);
507
508 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
509 }
510}
511
512static int poll_cb (void)
513{
126 for (;;) 514 for (;;)
127 { 515 {
128 pthread_mutex_lock (&reslock); 516 int res = eio_poll ();
129 req = ress;
130 517
131 if (req) 518 if (res > 0)
132 {
133 ress = req->next;
134
135 if (!ress)
136 {
137 /* read any signals sent by the worker threads */
138 char buf [32];
139 while (read (respipe [0], buf, 32) == 32)
140 ;
141
142 rese = 0;
143 }
144 }
145
146 pthread_mutex_unlock (&reslock);
147
148 if (!req)
149 break;
150
151 nreqs--;
152
153 if (req->type == REQ_QUIT)
154 started--;
155 else
156 {
157 int errorno = errno;
158 errno = req->errorno;
159
160 if (req->type == REQ_READ)
161 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
162
163 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
164 SvREADONLY_off (req->data);
165
166 if (req->statdata)
167 {
168 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
169 PL_laststatval = req->result;
170 PL_statcache = *(req->statdata);
171 }
172
173 ENTER;
174 PUSHMARK (SP);
175 XPUSHs (sv_2mortal (newSViv (req->result)));
176
177 if (req->type == REQ_OPEN)
178 {
179 /* convert fd to fh */
180 SV *fh;
181
182 PUTBACK;
183 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
184 SPAGAIN;
185
186 fh = SvREFCNT_inc (POPs);
187
188 PUSHMARK (SP);
189 XPUSHs (sv_2mortal (fh));
190 }
191
192 if (SvOK (req->callback))
193 {
194 PUTBACK;
195 call_sv (req->callback, G_VOID | G_EVAL);
196 SPAGAIN;
197
198 if (SvTRUE (ERRSV))
199 {
200 free_req (req);
201 croak (0); 519 croak (0);
202 }
203 }
204 520
205 LEAVE; 521 if (!max_outstanding || max_outstanding > eio_nreqs ())
522 return res;
206 523
207 errno = errorno; 524 poll_wait ();
208 count++;
209 }
210
211 free_req (req);
212 } 525 }
213
214 return count;
215}
216
217static void *aio_proc(void *arg);
218
219static void
220start_thread (void)
221{
222 sigset_t fullsigset, oldsigset;
223 pthread_t tid;
224 pthread_attr_t attr;
225
226 pthread_attr_init (&attr);
227 pthread_attr_setstacksize (&attr, STACKSIZE);
228 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
229
230 sigfillset (&fullsigset);
231 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
232
233 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
234 started++;
235
236 sigprocmask (SIG_SETMASK, &oldsigset, 0);
237}
238
239static void
240send_req (aio_req req)
241{
242 while (started < wanted && nreqs >= started)
243 start_thread ();
244
245 nreqs++;
246
247 pthread_mutex_lock (&reqlock);
248
249 req->next = 0;
250
251 if (reqe)
252 {
253 reqe->next = req;
254 reqe = req;
255 }
256 else
257 reqe = reqs = req;
258
259 pthread_cond_signal (&reqwait);
260 pthread_mutex_unlock (&reqlock);
261
262 if (nreqs > max_outstanding)
263 for (;;)
264 {
265 poll_cb ();
266
267 if (nreqs <= max_outstanding)
268 break;
269
270 poll_wait ();
271 }
272}
273
274static void
275end_thread (void)
276{
277 aio_req req;
278 Newz (0, req, 1, aio_cb);
279 req->type = REQ_QUIT;
280
281 send_req (req);
282}
283
284static void min_parallel (int nthreads)
285{
286 if (wanted < nthreads)
287 wanted = nthreads;
288}
289
290static void max_parallel (int nthreads)
291{
292 int cur = started;
293
294 if (wanted > nthreads)
295 wanted = nthreads;
296
297 while (cur > wanted)
298 {
299 end_thread ();
300 cur--;
301 }
302
303 while (started > wanted)
304 {
305 poll_wait ();
306 poll_cb ();
307 }
308}
309
310static void create_pipe ()
311{
312 if (pipe (respipe))
313 croak ("unable to initialize result pipe");
314
315 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
316 croak ("cannot set result pipe to nonblocking mode");
317
318 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
319 croak ("cannot set result pipe to nonblocking mode");
320}
321
322static void atfork_prepare (void)
323{
324 pthread_mutex_lock (&reqlock);
325 pthread_mutex_lock (&reslock);
326}
327
328static void atfork_parent (void)
329{
330 pthread_mutex_unlock (&reslock);
331 pthread_mutex_unlock (&reqlock);
332} 526}
333 527
334static void atfork_child (void) 528static void atfork_child (void)
335{ 529{
336 aio_req prv;
337
338 started = 0;
339
340 while (reqs)
341 {
342 prv = reqs;
343 reqs = prv->next;
344 free_req (prv);
345 }
346
347 reqs = reqe = 0;
348
349 while (ress)
350 {
351 prv = ress;
352 ress = prv->next;
353 free_req (prv);
354 }
355
356 ress = rese = 0;
357
358 close (respipe [0]);
359 close (respipe [1]);
360 create_pipe (); 530 create_respipe ();
361
362 atfork_parent ();
363} 531}
364 532
365/*****************************************************************************/ 533static SV *
366/* work around various missing functions */ 534get_cb (SV *cb_sv)
535{
536 HV *st;
537 GV *gvp;
538 CV *cv;
367 539
368#if !HAVE_PREADWRITE 540 if (!SvOK (cb_sv))
369# define pread aio_pread 541 return 0;
370# define pwrite aio_pwrite
371 542
372/* 543 cv = sv_2cv (cb_sv, &st, &gvp, 0);
373 * make our pread/pwrite safe against themselves, but not against
374 * normal read/write by using a mutex. slows down execution a lot,
375 * but that's your problem, not mine.
376 */
377static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
378 544
545 if (!cv)
546 croak ("IO::AIO callback must be undef or a CODE reference");
547
548 return (SV *)cv;
549}
550
551#define dREQ \
552 SV *cb_cv; \
553 aio_req req; \
554 int req_pri = next_pri; \
555 next_pri = EIO_PRI_DEFAULT; \
556 \
557 cb_cv = get_cb (callback); \
558 \
559 Newz (0, req, 1, eio_req); \
560 if (!req) \
561 croak ("out of memory during eio_req allocation"); \
562 \
563 req->callback = SvREFCNT_inc (cb_cv); \
564 req->pri = req_pri
565
566#define REQ_SEND \
567 PUTBACK; \
568 req_submit (req); \
569 SPAGAIN; \
570 \
571 if (GIMME_V != G_VOID) \
572 XPUSHs (req_sv (req, AIO_REQ_KLASS));
573
379static ssize_t 574static int
380pread (int fd, void *buf, size_t count, off_t offset) 575extract_fd (SV *fh, int wr)
381{ 576{
382 ssize_t res; 577 int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
383 off_t ooffset;
384 578
385 pthread_mutex_lock (&iolock); 579 if (fd < 0)
386 ooffset = lseek (fd, 0, SEEK_CUR); 580 croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
387 lseek (fd, offset, SEEK_SET);
388 res = read (fd, buf, count);
389 lseek (fd, ooffset, SEEK_SET);
390 pthread_mutex_unlock (&iolock);
391 581
392 return res; 582 return fd;
393} 583}
394 584
395static ssize_t 585MODULE = IO::AIO PACKAGE = IO::AIO
396pwrite (int fd, void *buf, size_t count, off_t offset)
397{
398 ssize_t res;
399 off_t ooffset;
400 586
401 pthread_mutex_lock (&iolock); 587PROTOTYPES: ENABLE
402 ooffset = lseek (fd, 0, SEEK_CUR);
403 lseek (fd, offset, SEEK_SET);
404 res = write (fd, buf, count);
405 lseek (fd, offset, SEEK_SET);
406 pthread_mutex_unlock (&iolock);
407 588
408 return res; 589BOOT:
409} 590{
591 static const struct {
592 const char *name;
593 IV iv;
594 } *civ, const_iv[] = {
595# define const_iv(name, value) { # name, (IV) value },
596# define const_eio(name) { # name, (IV) EIO_ ## name },
597 const_iv (EXDEV , EXDEV)
598 const_iv (ENOSYS , ENOSYS)
599 const_iv (O_RDONLY, O_RDONLY)
600 const_iv (O_WRONLY, O_WRONLY)
601 const_iv (O_CREAT , O_CREAT)
602 const_iv (O_TRUNC , O_TRUNC)
603#ifndef _WIN32
604 const_iv (S_IFIFO , S_IFIFO)
410#endif 605#endif
606 const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
607 const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
608 const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
609 const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
610 const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
611 const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
411 612
412#if !HAVE_FDATASYNC 613 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
413# define fdatasync fsync 614 const_eio (SYNC_FILE_RANGE_WRITE)
414#endif 615 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
415 616
416#if !HAVE_READAHEAD 617 const_eio (READDIR_DENTS)
417# define readahead aio_readahead 618 const_eio (READDIR_DIRS_FIRST)
619 const_eio (READDIR_STAT_ORDER)
620 const_eio (READDIR_FOUND_UNKNOWN)
418 621
419static char readahead_buf[4096]; 622 const_eio (DT_UNKNOWN)
420 623 const_eio (DT_FIFO)
421static ssize_t 624 const_eio (DT_CHR)
422readahead (int fd, off_t offset, size_t count) 625 const_eio (DT_DIR)
423{ 626 const_eio (DT_BLK)
424 while (count > 0) 627 const_eio (DT_REG)
425 { 628 const_eio (DT_LNK)
426 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 629 const_eio (DT_SOCK)
427 630 const_eio (DT_WHT)
428 pread (fd, readahead_buf, len, offset);
429 offset += len;
430 count -= len;
431 }
432
433 errno = 0;
434}
435#endif
436
437/* sendfile always needs emulation */
438static ssize_t
439sendfile_ (int ofd, int ifd, off_t offset, size_t count)
440{
441 ssize_t res;
442
443 if (!count)
444 return 0;
445
446#if HAVE_SENDFILE
447# if __linux
448 res = sendfile (ofd, ifd, &offset, count);
449
450# elif __freebsd
451 /*
452 * Of course, the freebsd sendfile is a dire hack with no thoughts
453 * wasted on making it similar to other I/O functions.
454 */
455 {
456 off_t sbytes;
457 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
458
459 if (res < 0 && sbytes)
460 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
461 res = sbytes;
462 } 631 };
463 632
464# elif __hpux 633 stash = gv_stashpv ("IO::AIO", 1);
465 res = sendfile (ofd, ifd, offset, count, 0, 0);
466 634
467# elif __solaris 635 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
468 { 636 newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
469 struct sendfilevec vec;
470 size_t sbytes;
471 637
472 vec.sfv_fd = ifd;
473 vec.sfv_flag = 0;
474 vec.sfv_off = offset;
475 vec.sfv_len = count;
476
477 res = sendfilev (ofd, &vec, 1, &sbytes);
478
479 if (res < 0 && sbytes)
480 res = sbytes;
481 }
482
483# else
484 res = -1;
485 errno = ENOSYS;
486# endif
487#endif
488
489 if (res < 0
490 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
491#if __solaris
492 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
493#endif
494 )
495 )
496 {
497 /* emulate sendfile. this is a major pain in the ass */
498 char *buf = malloc (4096);
499 res = 0;
500
501 for (;;)
502 {
503 ssize_t cnt;
504
505 cnt = pread (ifd, buf, 4096, offset);
506
507 if (cnt <= 0)
508 {
509 if (cnt && !res) res = -1;
510 break;
511 }
512
513 cnt = write (ofd, buf, cnt);
514
515 if (cnt <= 0)
516 {
517 if (cnt && !res) res = -1;
518 break;
519 }
520
521 offset += cnt;
522 res += cnt;
523 }
524
525 {
526 int errorno = errno;
527 free (buf);
528 errno = errorno;
529 }
530 }
531
532 return res;
533}
534
535/*****************************************************************************/
536
537static void *
538aio_proc (void *thr_arg)
539{
540 aio_req req;
541 int type;
542
543 do
544 {
545 pthread_mutex_lock (&reqlock);
546
547 for (;;)
548 {
549 req = reqs;
550
551 if (reqs)
552 {
553 reqs = reqs->next;
554 if (!reqs) reqe = 0;
555 }
556
557 if (req)
558 break;
559
560 pthread_cond_wait (&reqwait, &reqlock);
561 }
562
563 pthread_mutex_unlock (&reqlock);
564
565 errno = 0; /* strictly unnecessary */
566
567 type = req->type;
568
569 switch (type)
570 {
571 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
572 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
573
574 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
575 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
576
577 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
578 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
579 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
580
581 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
582 case REQ_CLOSE: req->result = close (req->fd); break;
583 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
584 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
585 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
586
587 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
588 case REQ_FSYNC: req->result = fsync (req->fd); break;
589
590 case REQ_QUIT:
591 break;
592
593 default:
594 req->result = ENOSYS;
595 break;
596 }
597
598 req->errorno = errno;
599
600 pthread_mutex_lock (&reslock);
601
602 req->next = 0;
603
604 if (rese)
605 {
606 rese->next = req;
607 rese = req;
608 }
609 else
610 {
611 rese = ress = req;
612
613 /* write a dummy byte to the pipe so fh becomes ready */
614 write (respipe [1], &respipe, 1);
615 }
616
617 pthread_mutex_unlock (&reslock);
618 }
619 while (type != REQ_QUIT);
620
621 return 0;
622}
623
624#define dREQ \
625 aio_req req; \
626 \
627 if (SvOK (callback) && !SvROK (callback)) \
628 croak ("clalback must be undef or of reference type"); \
629 \
630 Newz (0, req, 1, aio_cb); \
631 if (!req) \
632 croak ("out of memory during aio_req allocation"); \
633 \
634 req->callback = newSVsv (callback);
635
636MODULE = IO::AIO PACKAGE = IO::AIO
637
638PROTOTYPES: ENABLE
639
640BOOT:
641{
642 create_pipe (); 638 create_respipe ();
643 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
644}
645 639
640 if (eio_init (want_poll, done_poll) < 0)
641 croak ("IO::AIO: unable to initialise eio library");
642
643 /* atfork child called in fifo order, so before eio's handler */
644 X_THREAD_ATFORK (0, 0, atfork_child);
645}
646
646void 647void
647min_parallel(nthreads) 648max_poll_reqs (int nreqs)
648 int nthreads
649 PROTOTYPE: $ 649 PROTOTYPE: $
650 CODE:
651 eio_set_max_poll_reqs (nreqs);
650 652
651void 653void
652max_parallel(nthreads) 654max_poll_time (double nseconds)
653 int nthreads
654 PROTOTYPE: $ 655 PROTOTYPE: $
655
656int
657max_outstanding(nreqs)
658 int nreqs
659 PROTOTYPE: $
660 CODE: 656 CODE:
661 RETVAL = max_outstanding; 657 eio_set_max_poll_time (nseconds);
658
659void
660min_parallel (int nthreads)
661 PROTOTYPE: $
662 CODE:
663 eio_set_min_parallel (nthreads);
664
665void
666max_parallel (int nthreads)
667 PROTOTYPE: $
668 CODE:
669 eio_set_max_parallel (nthreads);
670
671void
672max_idle (int nthreads)
673 PROTOTYPE: $
674 CODE:
675 eio_set_max_idle (nthreads);
676
677void
678max_outstanding (int maxreqs)
679 PROTOTYPE: $
680 CODE:
662 max_outstanding = nreqs; 681 max_outstanding = maxreqs;
663 682
664void 683void
665aio_open(pathname,flags,mode,callback=&PL_sv_undef) 684aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
666 SV * pathname
667 int flags
668 int mode
669 SV * callback
670 PROTOTYPE: $$$;$ 685 PROTOTYPE: $$$;$
671 CODE: 686 PPCODE:
672{ 687{
673 dREQ; 688 dREQ;
674 689
675 req->type = REQ_OPEN; 690 req->type = EIO_OPEN;
676 req->data = newSVsv (pathname); 691 req->sv1 = newSVsv (pathname);
677 req->dataptr = SvPVbyte_nolen (req->data); 692 req->ptr1 = SvPVbyte_nolen (req->sv1);
678 req->fd = flags; 693 req->int1 = flags;
679 req->mode = mode; 694 req->int2 = mode;
680 695
681 send_req (req); 696 REQ_SEND;
682} 697}
683 698
684void 699void
685aio_close(fh,callback=&PL_sv_undef) 700aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
686 SV * fh
687 SV * callback
688 PROTOTYPE: $;$ 701 PROTOTYPE: $;$
689 ALIAS: 702 ALIAS:
690 aio_close = REQ_CLOSE
691 aio_fsync = REQ_FSYNC 703 aio_fsync = EIO_FSYNC
692 aio_fdatasync = REQ_FDATASYNC 704 aio_fdatasync = EIO_FDATASYNC
693 CODE: 705 PPCODE:
694{ 706{
707 int fd = extract_fd (fh, 0);
695 dREQ; 708 dREQ;
696 709
697 req->type = ix; 710 req->type = ix;
698 req->fh = newSVsv (fh); 711 req->sv1 = newSVsv (fh);
699 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 712 req->int1 = fd;
700 713
701 send_req (req); 714 REQ_SEND (req);
702} 715}
703 716
704void 717void
718aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
719 PROTOTYPE: $$$$;$
720 PPCODE:
721{
722 int fd = extract_fd (fh, 0);
723 dREQ;
724
725 req->type = EIO_SYNC_FILE_RANGE;
726 req->sv1 = newSVsv (fh);
727 req->int1 = fd;
728 req->offs = offset;
729 req->size = nbytes;
730 req->int2 = flags;
731
732 REQ_SEND (req);
733}
734
735void
736aio_close (SV *fh, SV *callback=&PL_sv_undef)
737 PROTOTYPE: $;$
738 PPCODE:
739{
740 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
741 int fd = extract_fd (fh, 0);
742 dREQ;
743
744 if (close_pipe < 0)
745 {
746 int pipefd [2];
747
748 if (pipe (pipefd) < 0
749 || close (pipefd [1]) < 0
750 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
751 abort (); /*D*/
752
753 close_pipe = pipefd [0];
754 }
755
756 req->type = EIO_DUP2;
757 req->int1 = close_pipe;
758 req->sv2 = newSVsv (fh);
759 req->int2 = fd;
760
761 REQ_SEND (req);
762}
763
764void
705aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 765aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
706 SV * fh
707 UV offset
708 UV length
709 SV * data
710 UV dataoffset
711 SV * callback
712 ALIAS: 766 ALIAS:
713 aio_read = REQ_READ 767 aio_read = EIO_READ
714 aio_write = REQ_WRITE 768 aio_write = EIO_WRITE
715 PROTOTYPE: $$$$$;$ 769 PROTOTYPE: $$$$$;$
716 CODE: 770 PPCODE:
717{ 771{
718 aio_req req;
719 STRLEN svlen; 772 STRLEN svlen;
773 int fd = extract_fd (fh, ix == EIO_WRITE);
720 char *svptr = SvPVbyte (data, svlen); 774 char *svptr = SvPVbyte (data, svlen);
721 775 UV len = SvUV (length);
722 SvUPGRADE (data, SVt_PV);
723 SvPOK_on (data);
724 776
725 if (dataoffset < 0) 777 if (dataoffset < 0)
726 dataoffset += svlen; 778 dataoffset += svlen;
727 779
728 if (dataoffset < 0 || dataoffset > svlen) 780 if (dataoffset < 0 || dataoffset > svlen)
729 croak ("data offset outside of string"); 781 croak ("dataoffset outside of data scalar");
730 782
731 if (ix == REQ_WRITE) 783 if (ix == EIO_WRITE)
732 { 784 {
733 /* write: check length and adjust. */ 785 /* write: check length and adjust. */
734 if (length < 0 || length + dataoffset > svlen) 786 if (!SvOK (length) || len + dataoffset > svlen)
735 length = svlen - dataoffset; 787 len = svlen - dataoffset;
736 } 788 }
737 else 789 else
738 { 790 {
739 /* read: grow scalar as necessary */ 791 /* read: check type and grow scalar as necessary */
792 SvUPGRADE (data, SVt_PV);
740 svptr = SvGROW (data, length + dataoffset); 793 svptr = SvGROW (data, len + dataoffset + 1);
741 } 794 }
742
743 if (length < 0)
744 croak ("length must not be negative");
745 795
746 { 796 {
747 dREQ; 797 dREQ;
748 798
749 req->type = ix; 799 req->type = ix;
750 req->fh = newSVsv (fh); 800 req->sv1 = newSVsv (fh);
751 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 801 req->int1 = fd;
752 : IoOFP (sv_2io (fh))); 802 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
753 req->offset = offset; 803 req->size = len;
754 req->length = length;
755 req->data = SvREFCNT_inc (data); 804 req->sv2 = SvREFCNT_inc (data);
756 req->dataptr = (char *)svptr + dataoffset; 805 req->ptr2 = (char *)svptr + dataoffset;
806 req->stroffset = dataoffset;
757 807
758 if (!SvREADONLY (data)) 808 if (!SvREADONLY (data))
759 { 809 {
760 SvREADONLY_on (data); 810 SvREADONLY_on (data);
761 req->data2ptr = (void *)data; 811 req->flags |= FLAG_SV2_RO_OFF;
762 } 812 }
763 813
764 send_req (req); 814 REQ_SEND;
765 } 815 }
766} 816}
767 817
768void 818void
819aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
820 PROTOTYPE: $$;$
821 PPCODE:
822{
823 SV *data;
824 dREQ;
825
826 req->type = EIO_READLINK;
827 req->sv1 = newSVsv (path);
828 req->ptr1 = SvPVbyte_nolen (req->sv1);
829
830 REQ_SEND;
831}
832
833void
769aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 834aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
770 SV * out_fh
771 SV * in_fh
772 UV in_offset
773 UV length
774 SV * callback
775 PROTOTYPE: $$$$;$ 835 PROTOTYPE: $$$$;$
776 CODE: 836 PPCODE:
777{ 837{
838 int ifd = extract_fd (in_fh , 0);
839 int ofd = extract_fd (out_fh, 0);
778 dREQ; 840 dREQ;
779 841
780 req->type = REQ_SENDFILE; 842 req->type = EIO_SENDFILE;
781 req->fh = newSVsv (out_fh); 843 req->sv1 = newSVsv (out_fh);
782 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 844 req->int1 = ofd;
783 req->fh2 = newSVsv (in_fh); 845 req->sv2 = newSVsv (in_fh);
784 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 846 req->int2 = ifd;
785 req->offset = in_offset; 847 req->offs = in_offset;
786 req->length = length; 848 req->size = length;
787 849
788 send_req (req); 850 REQ_SEND;
789} 851}
790 852
791void 853void
792aio_readahead(fh,offset,length,callback=&PL_sv_undef) 854aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
793 SV * fh
794 UV offset
795 IV length
796 SV * callback
797 PROTOTYPE: $$$;$ 855 PROTOTYPE: $$$;$
798 CODE: 856 PPCODE:
799{ 857{
858 int fd = extract_fd (fh, 0);
800 dREQ; 859 dREQ;
801 860
802 req->type = REQ_READAHEAD; 861 req->type = EIO_READAHEAD;
803 req->fh = newSVsv (fh); 862 req->sv1 = newSVsv (fh);
804 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 863 req->int1 = fd;
805 req->offset = offset; 864 req->offs = offset;
806 req->length = length; 865 req->size = length;
807 866
808 send_req (req); 867 REQ_SEND;
809} 868}
810 869
811void 870void
812aio_stat(fh_or_path,callback=&PL_sv_undef) 871aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
813 SV * fh_or_path
814 SV * callback
815 ALIAS: 872 ALIAS:
816 aio_stat = REQ_STAT 873 aio_stat = EIO_STAT
817 aio_lstat = REQ_LSTAT 874 aio_lstat = EIO_LSTAT
818 CODE: 875 PPCODE:
819{ 876{
820 dREQ; 877 dREQ;
821 878
822 New (0, req->statdata, 1, Stat_t); 879 req->sv1 = newSVsv (fh_or_path);
823 if (!req->statdata)
824 {
825 free_req (req);
826 croak ("out of memory during aio_req->statdata allocation");
827 }
828 880
829 if (SvPOK (fh_or_path)) 881 if (SvPOK (req->sv1))
830 { 882 {
831 req->type = ix; 883 req->type = ix;
832 req->data = newSVsv (fh_or_path);
833 req->dataptr = SvPVbyte_nolen (req->data); 884 req->ptr1 = SvPVbyte_nolen (req->sv1);
834 } 885 }
835 else 886 else
836 { 887 {
837 req->type = REQ_FSTAT; 888 req->type = EIO_FSTAT;
838 req->fh = newSVsv (fh_or_path);
839 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 889 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
890 }
891
892 REQ_SEND;
893}
894
895void
896aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
897 PPCODE:
898{
899 dREQ;
900
901 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
902 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
903 req->sv1 = newSVsv (fh_or_path);
904
905 if (SvPOK (req->sv1))
840 } 906 {
907 req->type = EIO_UTIME;
908 req->ptr1 = SvPVbyte_nolen (req->sv1);
909 }
910 else
911 {
912 req->type = EIO_FUTIME;
913 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
914 }
841 915
842 send_req (req); 916 REQ_SEND;
843} 917}
844 918
845void 919void
920aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
921 PPCODE:
922{
923 dREQ;
924
925 req->sv1 = newSVsv (fh_or_path);
926 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
927
928 if (SvPOK (req->sv1))
929 {
930 req->type = EIO_TRUNCATE;
931 req->ptr1 = SvPVbyte_nolen (req->sv1);
932 }
933 else
934 {
935 req->type = EIO_FTRUNCATE;
936 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
937 }
938
939 REQ_SEND;
940}
941
942void
943aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
944 ALIAS:
945 aio_chmod = EIO_CHMOD
946 aio_mkdir = EIO_MKDIR
947 PPCODE:
948{
949 dREQ;
950
951 req->int2 = mode;
952 req->sv1 = newSVsv (fh_or_path);
953
954 if (SvPOK (req->sv1))
955 {
956 req->type = ix;
957 req->ptr1 = SvPVbyte_nolen (req->sv1);
958 }
959 else
960 {
961 req->type = EIO_FCHMOD;
962 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
963 }
964
965 REQ_SEND;
966}
967
968void
969aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
970 PPCODE:
971{
972 dREQ;
973
974 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
975 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
976 req->sv1 = newSVsv (fh_or_path);
977
978 if (SvPOK (req->sv1))
979 {
980 req->type = EIO_CHOWN;
981 req->ptr1 = SvPVbyte_nolen (req->sv1);
982 }
983 else
984 {
985 req->type = EIO_FCHOWN;
986 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
987 }
988
989 REQ_SEND;
990}
991
992void
993aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
994 PPCODE:
995{
996 dREQ;
997
998 req->type = EIO_READDIR;
999 req->sv1 = newSVsv (pathname);
1000 req->ptr1 = SvPVbyte_nolen (req->sv1);
1001 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1002
1003 if (flags & EIO_READDIR_DENTS)
1004 req->int1 |= EIO_READDIR_CUSTOM2;
1005
1006 REQ_SEND;
1007}
1008
1009void
846aio_unlink(pathname,callback=&PL_sv_undef) 1010aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
847 SV * pathname
848 SV * callback
849 ALIAS: 1011 ALIAS:
850 aio_unlink = REQ_UNLINK 1012 aio_unlink = EIO_UNLINK
851 aio_rmdir = REQ_RMDIR 1013 aio_rmdir = EIO_RMDIR
1014 aio_readdir = EIO_READDIR
852 CODE: 1015 PPCODE:
853{ 1016{
854 dREQ; 1017 dREQ;
855 1018
856 req->type = ix; 1019 req->type = ix;
857 req->data = newSVsv (pathname); 1020 req->sv1 = newSVsv (pathname);
858 req->dataptr = SvPVbyte_nolen (req->data); 1021 req->ptr1 = SvPVbyte_nolen (req->sv1);
859
860 send_req (req);
861}
862 1022
1023 REQ_SEND;
1024}
1025
863void 1026void
864aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1027aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
865 SV * oldpath 1028 ALIAS:
866 SV * newpath 1029 aio_link = EIO_LINK
867 SV * callback 1030 aio_symlink = EIO_SYMLINK
1031 aio_rename = EIO_RENAME
868 CODE: 1032 PPCODE:
869{ 1033{
870 dREQ; 1034 dREQ;
871 1035
872 req->type = REQ_SYMLINK; 1036 req->type = ix;
873 req->fh = newSVsv (oldpath); 1037 req->sv1 = newSVsv (oldpath);
874 req->data2ptr = SvPVbyte_nolen (req->fh); 1038 req->ptr1 = SvPVbyte_nolen (req->sv1);
875 req->data = newSVsv (newpath); 1039 req->sv2 = newSVsv (newpath);
876 req->dataptr = SvPVbyte_nolen (req->data); 1040 req->ptr2 = SvPVbyte_nolen (req->sv2);
877 1041
878 send_req (req); 1042 REQ_SEND;
879} 1043}
880 1044
881void 1045void
1046aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1047 PPCODE:
1048{
1049 dREQ;
1050
1051 req->type = EIO_MKNOD;
1052 req->sv1 = newSVsv (pathname);
1053 req->ptr1 = SvPVbyte_nolen (req->sv1);
1054 req->int2 = (mode_t)mode;
1055 req->offs = dev;
1056
1057 REQ_SEND;
1058}
1059
1060void
1061aio_busy (double delay, SV *callback=&PL_sv_undef)
1062 PPCODE:
1063{
1064 dREQ;
1065
1066 req->type = EIO_BUSY;
1067 req->nv1 = delay < 0. ? 0. : delay;
1068
1069 REQ_SEND;
1070}
1071
1072void
1073aio_group (SV *callback=&PL_sv_undef)
1074 PROTOTYPE: ;$
1075 PPCODE:
1076{
1077 dREQ;
1078
1079 req->type = EIO_GROUP;
1080
1081 req_submit (req);
1082 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1083}
1084
1085void
1086aio_nop (SV *callback=&PL_sv_undef)
1087 ALIAS:
1088 aio_nop = EIO_NOP
1089 aio_sync = EIO_SYNC
1090 PPCODE:
1091{
1092 dREQ;
1093
1094 req->type = ix;
1095
1096 REQ_SEND;
1097}
1098
1099int
1100aioreq_pri (int pri = 0)
1101 PROTOTYPE: ;$
1102 CODE:
1103 RETVAL = next_pri;
1104 if (items > 0)
1105 {
1106 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1107 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1108 next_pri = pri;
1109 }
1110 OUTPUT:
1111 RETVAL
1112
1113void
1114aioreq_nice (int nice = 0)
1115 CODE:
1116 nice = next_pri - nice;
1117 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1118 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1119 next_pri = nice;
1120
1121void
882flush() 1122flush ()
883 PROTOTYPE: 1123 PROTOTYPE:
884 CODE: 1124 CODE:
885 while (nreqs) 1125 while (eio_nreqs ())
886 { 1126 {
887 poll_wait (); 1127 poll_wait ();
888 poll_cb (); 1128 poll_cb ();
889 } 1129 }
890 1130
891void 1131int
892poll() 1132poll()
893 PROTOTYPE: 1133 PROTOTYPE:
894 CODE: 1134 CODE:
895 if (nreqs)
896 {
897 poll_wait (); 1135 poll_wait ();
898 poll_cb (); 1136 RETVAL = poll_cb ();
899 } 1137 OUTPUT:
1138 RETVAL
900 1139
901int 1140int
902poll_fileno() 1141poll_fileno()
903 PROTOTYPE: 1142 PROTOTYPE:
904 CODE: 1143 CODE:
916 1155
917void 1156void
918poll_wait() 1157poll_wait()
919 PROTOTYPE: 1158 PROTOTYPE:
920 CODE: 1159 CODE:
921 if (nreqs)
922 poll_wait (); 1160 poll_wait ();
923 1161
924int 1162int
925nreqs() 1163nreqs()
926 PROTOTYPE: 1164 PROTOTYPE:
927 CODE: 1165 CODE:
928 RETVAL = nreqs; 1166 RETVAL = eio_nreqs ();
929 OUTPUT: 1167 OUTPUT:
930 RETVAL 1168 RETVAL
931 1169
1170int
1171nready()
1172 PROTOTYPE:
1173 CODE:
1174 RETVAL = eio_nready ();
1175 OUTPUT:
1176 RETVAL
1177
1178int
1179npending()
1180 PROTOTYPE:
1181 CODE:
1182 RETVAL = eio_npending ();
1183 OUTPUT:
1184 RETVAL
1185
1186int
1187nthreads()
1188 PROTOTYPE:
1189 CODE:
1190 RETVAL = eio_nthreads ();
1191 OUTPUT:
1192 RETVAL
1193
1194int
1195fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1196 PROTOTYPE: $$$$
1197 CODE:
1198{
1199 #if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1200 RETVAL = posix_fadvise (fh, offset, length, advice);
1201 #else
1202 RETVAL = errno = ENOSYS;
1203 #endif
1204}
1205 OUTPUT:
1206 RETVAL
1207
1208ssize_t
1209sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1210 PROTOTYPE: $$$$
1211 CODE:
1212 eio_sendfile_sync (ofh, ifh, offset, count);
1213
1214void _on_next_submit (SV *cb)
1215 CODE:
1216 SvREFCNT_dec (on_next_submit);
1217 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1218
1219PROTOTYPES: DISABLE
1220
1221MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1222
1223void
1224cancel (aio_req_ornot req)
1225 CODE:
1226 eio_cancel (req);
1227
1228void
1229cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1230 PPCODE:
1231{
1232 if (GIMME_V != G_VOID)
1233 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1234
1235 if (items > 1)
1236 {
1237 SV *cb_cv = get_cb (callback);
1238
1239 SvREFCNT_dec (req->callback);
1240 req->callback = SvREFCNT_inc (cb_cv);
1241 }
1242}
1243
1244MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1245
1246void
1247add (aio_req grp, ...)
1248 PPCODE:
1249{
1250 int i;
1251
1252 if (grp->int1 == 2)
1253 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1254
1255 for (i = 1; i < items; ++i )
1256 {
1257 aio_req req;
1258
1259 if (GIMME_V != G_VOID)
1260 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1261
1262 req = SvAIO_REQ (ST (i));
1263
1264 if (req)
1265 eio_grp_add (grp, req);
1266 }
1267}
1268
1269void
1270cancel_subs (aio_req_ornot req)
1271 CODE:
1272 req_cancel_subs (req);
1273
1274void
1275result (aio_req grp, ...)
1276 CODE:
1277{
1278 int i;
1279 AV *av;
1280
1281 grp->errorno = errno;
1282
1283 av = newAV ();
1284 av_extend (av, items - 1);
1285
1286 for (i = 1; i < items; ++i )
1287 av_push (av, newSVsv (ST (i)));
1288
1289 SvREFCNT_dec (grp->sv1);
1290 grp->sv1 = (SV *)av;
1291}
1292
1293void
1294errno (aio_req grp, int errorno = errno)
1295 CODE:
1296 grp->errorno = errorno;
1297
1298void
1299limit (aio_req grp, int limit)
1300 CODE:
1301 eio_grp_limit (grp, limit);
1302
1303void
1304feed (aio_req grp, SV *callback=&PL_sv_undef)
1305 CODE:
1306{
1307 SvREFCNT_dec (grp->sv2);
1308 grp->sv2 = newSVsv (callback);
1309 grp->feed = aio_grp_feed;
1310
1311 if (grp->int2 <= 0)
1312 grp->int2 = 2;
1313
1314 eio_grp_limit (grp, grp->int2);
1315}
1316

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