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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.64 by root, Mon Oct 23 23:54:41 2006 UTC vs.
Revision 1.117 by root, Sat May 10 20:02:09 2008 UTC

1#if __linux 1#include "libeio/xthread.h"
2# define _GNU_SOURCE
3#endif
4
5#define _REENTRANT 1
6 2
7#include <errno.h> 3#include <errno.h>
8 4
9#include "EXTERN.h" 5#include "EXTERN.h"
10#include "perl.h" 6#include "perl.h"
11#include "XSUB.h" 7#include "XSUB.h"
12 8
13#include "autoconf/config.h"
14
15#include <pthread.h>
16
17#include <stddef.h> 9#include <stddef.h>
10#include <stdlib.h>
18#include <errno.h> 11#include <errno.h>
19#include <sys/time.h>
20#include <sys/select.h>
21#include <sys/types.h> 12#include <sys/types.h>
22#include <sys/stat.h> 13#include <sys/stat.h>
23#include <limits.h> 14#include <limits.h>
24#include <unistd.h>
25#include <fcntl.h> 15#include <fcntl.h>
26#include <signal.h>
27#include <sched.h> 16#include <sched.h>
28 17
29#if HAVE_SENDFILE 18#ifdef _WIN32
30# if __linux 19
31# include <sys/sendfile.h> 20# define EIO_STRUCT_DIRENT Direntry_t
32# elif __freebsd 21# undef malloc
33# include <sys/socket.h> 22# undef free
34# include <sys/uio.h> 23
35# elif __hpux 24// perl overrides all those nice win32 functions
36# include <sys/socket.h> 25# undef open
37# elif __solaris /* not yet */ 26# undef read
38# include <sys/sendfile.h> 27# undef write
28# undef send
29# undef recv
30# undef stat
31# undef fstat
32# define lstat stat
33# undef truncate
34# undef ftruncate
35# undef open
36# undef close
37# undef unlink
38# undef rmdir
39# undef rename
40# undef lseek
41
42# define chown(a,b,c) (errno = ENOSYS, -1)
43# define fchown(a,b,c) (errno = ENOSYS, -1)
44# define fchmod(a,b) (errno = ENOSYS, -1)
45# define symlink(a,b) (errno = ENOSYS, -1)
46# define readlink(a,b,c) (errno = ENOSYS, -1)
47# define mknod(a,b,c) (errno = ENOSYS, -1)
48# define truncate(a,b) (errno = ENOSYS, -1)
49# define ftruncate(fd,o) chsize ((fd), (o))
50# define fsync(fd) _commit (fd)
51# define opendir(fd) (errno = ENOSYS, 0)
52# define readdir(fd) (errno = ENOSYS, -1)
53# define closedir(fd) (errno = ENOSYS, -1)
54# define mkdir(a,b) mkdir (a)
55
39# else 56#else
40# error sendfile support requested but not available 57
41# endif 58# include <sys/time.h>
59# include <sys/select.h>
60# include <unistd.h>
61# include <utime.h>
62# include <signal.h>
63# define EIO_STRUCT_DIRENT struct dirent
64
42#endif 65#endif
43 66
44/* used for struct dirent, AIX doesn't provide it */ 67#define EIO_STRUCT_STAT Stat_t
45#ifndef NAME_MAX 68
46# define NAME_MAX 4096 69/* use NV for 32 bit perls as it allows larger offsets */
70#if IVSIZE >= 8
71# define SvVAL64 SvIV
72#else
73# define SvVAL64 SvNV
47#endif 74#endif
48 75
49#if __ia64 76static HV *stash;
50# define STACKSIZE 65536 77typedef SV SV8; /* byte-sv, used for argument-checking */
51#else
52# define STACKSIZE 8192
53#endif
54
55enum {
56 REQ_QUIT,
57 REQ_OPEN, REQ_CLOSE,
58 REQ_READ, REQ_WRITE, REQ_READAHEAD,
59 REQ_SENDFILE,
60 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
61 REQ_FSYNC, REQ_FDATASYNC,
62 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
63 REQ_READDIR,
64 REQ_LINK, REQ_SYMLINK,
65 REQ_GROUP, REQ_NOP,
66 REQ_SLEEP,
67};
68 78
69#define AIO_REQ_KLASS "IO::AIO::REQ" 79#define AIO_REQ_KLASS "IO::AIO::REQ"
70#define AIO_GRP_KLASS "IO::AIO::GRP" 80#define AIO_GRP_KLASS "IO::AIO::GRP"
71 81
72typedef struct aio_cb 82#define EIO_COMMON \
73{
74 struct aio_cb *volatile next;
75
76 SV *data, *callback; 83 SV *callback; \
77 SV *fh, *fh2; 84 SV *sv1, *sv2; \
78 void *dataptr, *data2ptr;
79 Stat_t *statdata;
80 off_t offset;
81 size_t length;
82 ssize_t result;
83
84 STRLEN dataoffset; 85 STRLEN stroffset; \
85 int type; 86 SV *self
86 int fd, fd2;
87 int errorno;
88 mode_t mode; /* open */
89 87
90 unsigned char flags; 88#include "libeio/eio.h"
91 unsigned char pri;
92 89
93 SV *self; /* the perl counterpart of this request, if any */ 90static int req_invoke (eio_req *req);
94 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 91#define EIO_FINISH(req) req_invoke (req)
95} aio_cb; 92static void aio_grp_feed (eio_req *grp);
93#define EIO_FEED(req) aio_grp_feed (req)
94static void req_destroy (eio_req *grp);
95#define EIO_DESTROY(req) req_destroy (req)
96 96
97enum { 97enum {
98 FLAG_CANCELLED = 0x01, 98 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
99}; 99};
100 100
101#include "libeio/eio.c"
102
101typedef aio_cb *aio_req; 103typedef eio_req *aio_req;
102typedef aio_cb *aio_req_ornot; 104typedef eio_req *aio_req_ornot;
103 105
104enum { 106static SV *on_next_submit;
105 PRI_MIN = -4,
106 PRI_MAX = 4,
107
108 DEFAULT_PRI = 0,
109 PRI_BIAS = -PRI_MIN,
110};
111
112static int next_pri = DEFAULT_PRI + PRI_BIAS; 107static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
113
114static int started, wanted;
115static volatile int nreqs;
116static int max_outstanding = 1<<30; 108static int max_outstanding;
117static int respipe [2];
118 109
119#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 110static int respipe_osf [2], respipe [2] = { -1, -1 };
120# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
121#else
122# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
123#endif
124 111
125static pthread_mutex_t reslock = AIO_MUTEX_INIT; 112static void req_destroy (aio_req req);
126static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
127static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
128
129static volatile aio_req reqs, reqe; /* queue start, queue end */
130static volatile aio_req ress, rese; /* queue start, queue end */
131
132static void req_invoke (aio_req req); 113static void req_cancel (aio_req req);
133static void req_free (aio_req req); 114
115static void want_poll (void)
116{
117 /* write a dummy byte to the pipe so fh becomes ready */
118 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
119}
120
121static void done_poll (void)
122{
123 /* read any signals sent by the worker threads */
124 char buf [4];
125 while (respipe_read (respipe [0], buf, 4) == 4)
126 ;
127}
134 128
135/* must be called at most once */ 129/* must be called at most once */
136static SV *req_sv (aio_req req, const char *klass) 130static SV *req_sv (aio_req req, const char *klass)
137{ 131{
138 if (!req->self) 132 if (!req->self)
… …
156 return mg ? (aio_req)mg->mg_ptr : 0; 150 return mg ? (aio_req)mg->mg_ptr : 0;
157} 151}
158 152
159static void aio_grp_feed (aio_req grp) 153static void aio_grp_feed (aio_req grp)
160{ 154{
161 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 155 if (grp->sv2 && SvOK (grp->sv2))
162 { 156 {
163 int old_len = grp->length; 157 dSP;
164 158
165 if (grp->fh2 && SvOK (grp->fh2)) 159 ENTER;
160 SAVETMPS;
161 PUSHMARK (SP);
162 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
163 PUTBACK;
164 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
165 SPAGAIN;
166 FREETMPS;
167 LEAVE;
168 }
169}
170
171static void req_submit (eio_req *req)
172{
173 eio_submit (req);
174
175 if (on_next_submit)
176 {
177 dSP;
178 SV *cb = sv_2mortal (on_next_submit);
179
180 on_next_submit = 0;
181
182 PUSHMARK (SP);
183 PUTBACK;
184 call_sv (cb, G_DISCARD | G_EVAL);
185 }
186}
187
188static int req_invoke (eio_req *req)
189{
190 dSP;
191
192 if (req->flags & FLAG_SV2_RO_OFF)
193 SvREADONLY_off (req->sv2);
194
195 if (!EIO_CANCELLED (req) && SvOK (req->callback))
196 {
197 ENTER;
198 SAVETMPS;
199 PUSHMARK (SP);
200 EXTEND (SP, 1);
201
202 switch (req->type)
166 { 203 {
167 dSP; 204 case EIO_READDIR:
205 {
206 SV *rv = &PL_sv_undef;
168 207
169 ENTER; 208 if (req->result >= 0)
170 SAVETMPS; 209 {
171 PUSHMARK (SP); 210 int i;
172 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 211 char *buf = req->ptr2;
173 PUTBACK; 212 AV *av = newAV ();
174 call_sv (grp->fh2, G_VOID | G_EVAL); 213
175 SPAGAIN; 214 av_extend (av, req->result - 1);
176 FREETMPS; 215
177 LEAVE; 216 for (i = 0; i < req->result; ++i)
217 {
218 SV *sv = newSVpv (buf, 0);
219
220 av_store (av, i, sv);
221 buf += SvCUR (sv) + 1;
222 }
223
224 rv = sv_2mortal (newRV_noinc ((SV *)av));
225 }
226
227 PUSHs (rv);
228 }
229 break;
230
231 case EIO_OPEN:
232 {
233 /* convert fd to fh */
234 SV *fh = &PL_sv_undef;
235
236 if (req->result >= 0)
237 {
238 GV *gv = (GV *)sv_newmortal ();
239 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
240 char sym [64];
241 int symlen;
242
243 symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
244 gv_init (gv, stash, sym, symlen, 0);
245
246 symlen = snprintf (
247 sym,
248 sizeof (sym),
249 "%s&=%d",
250 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
251 req->result
252 );
253
254 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
255 fh = (SV *)gv;
256 }
257
258 PUSHs (fh);
259 }
260 break;
261
262 case EIO_GROUP:
263 req->int1 = 2; /* mark group as finished */
264
265 if (req->sv1)
266 {
267 int i;
268 AV *av = (AV *)req->sv1;
269
270 EXTEND (SP, AvFILL (av) + 1);
271 for (i = 0; i <= AvFILL (av); ++i)
272 PUSHs (*av_fetch (av, i, 0));
273 }
274 break;
275
276 case EIO_NOP:
277 case EIO_BUSY:
278 break;
279
280 case EIO_READLINK:
281 if (req->result > 0)
282 {
283 SvCUR_set (req->sv2, req->result);
284 *SvEND (req->sv2) = 0;
285 PUSHs (req->sv2);
286 }
287 break;
288
289 case EIO_STAT:
290 case EIO_LSTAT:
291 case EIO_FSTAT:
292 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
293 PL_laststatval = req->result;
294 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
295 PUSHs (sv_2mortal (newSViv (req->result)));
296 break;
297
298 case EIO_READ:
299 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
300 *SvEND (req->sv2) = 0;
301 PUSHs (sv_2mortal (newSViv (req->result)));
302 break;
303
304 case EIO_DUP2:
305 if (req->result > 0)
306 req->result = 0;
307 /* FALLTHROUGH */
308
309 default:
310 PUSHs (sv_2mortal (newSViv (req->result)));
311 break;
178 } 312 }
179 313
180 /* stop if no progress has been made */ 314 errno = req->errorno;
181 if (old_len == grp->length) 315
182 { 316 PUTBACK;
183 SvREFCNT_dec (grp->fh2); 317 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
184 grp->fh2 = 0; 318 SPAGAIN;
185 break; 319
186 } 320 FREETMPS;
321 LEAVE;
322
323 PUTBACK;
187 } 324 }
188}
189 325
190static void aio_grp_dec (aio_req grp) 326 return !!SvTRUE (ERRSV);
191{
192 --grp->length;
193
194 /* call feeder, if applicable */
195 aio_grp_feed (grp);
196
197 /* finish, if done */
198 if (!grp->length && grp->fd)
199 {
200 req_invoke (grp);
201 req_free (grp);
202 }
203} 327}
204 328
205static void poll_wait ()
206{
207 fd_set rfd;
208
209 while (nreqs)
210 {
211 aio_req req;
212#if !(__x86 || __x86_64) /* safe without sempahore on this archs */
213 pthread_mutex_lock (&reslock);
214#endif
215 req = ress;
216#if !(__x86 || __x86_64) /* safe without sempahore on this archs */
217 pthread_mutex_unlock (&reslock);
218#endif
219
220 if (req)
221 return;
222
223 FD_ZERO(&rfd);
224 FD_SET(respipe [0], &rfd);
225
226 select (respipe [0] + 1, &rfd, 0, 0, 0);
227 }
228}
229
230static void req_invoke (aio_req req)
231{
232 dSP;
233 int errorno = errno;
234
235 if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
236 return;
237
238 errno = req->errorno;
239
240 ENTER;
241 SAVETMPS;
242 PUSHMARK (SP);
243 EXTEND (SP, 1);
244
245 switch (req->type)
246 {
247 case REQ_READDIR:
248 {
249 SV *rv = &PL_sv_undef;
250
251 if (req->result >= 0)
252 {
253 char *buf = req->data2ptr;
254 AV *av = newAV ();
255
256 while (req->result)
257 {
258 SV *sv = newSVpv (buf, 0);
259
260 av_push (av, sv);
261 buf += SvCUR (sv) + 1;
262 req->result--;
263 }
264
265 rv = sv_2mortal (newRV_noinc ((SV *)av));
266 }
267
268 PUSHs (rv);
269 }
270 break;
271
272 case REQ_OPEN:
273 {
274 /* convert fd to fh */
275 SV *fh;
276
277 PUSHs (sv_2mortal (newSViv (req->result)));
278 PUTBACK;
279 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
280 SPAGAIN;
281
282 fh = SvREFCNT_inc (POPs);
283
284 PUSHMARK (SP);
285 XPUSHs (sv_2mortal (fh));
286 }
287 break;
288
289 case REQ_GROUP:
290 req->fd = 2; /* mark group as finished */
291
292 if (req->data)
293 {
294 int i;
295 AV *av = (AV *)req->data;
296
297 EXTEND (SP, AvFILL (av) + 1);
298 for (i = 0; i <= AvFILL (av); ++i)
299 PUSHs (*av_fetch (av, i, 0));
300 }
301 break;
302
303 case REQ_NOP:
304 case REQ_SLEEP:
305 break;
306
307 default:
308 PUSHs (sv_2mortal (newSViv (req->result)));
309 break;
310 }
311
312
313 PUTBACK;
314 call_sv (req->callback, G_VOID | G_EVAL);
315 SPAGAIN;
316
317 FREETMPS;
318 LEAVE;
319
320 errno = errorno;
321
322 if (SvTRUE (ERRSV))
323 {
324 req_free (req);
325 croak (0);
326 }
327}
328
329static void req_free (aio_req req) 329static void req_destroy (aio_req req)
330{ 330{
331 if (req->grp)
332 {
333 aio_req grp = req->grp;
334
335 /* unlink request */
336 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
337 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
338
339 if (grp->grp_first == req)
340 grp->grp_first = req->grp_next;
341
342 aio_grp_dec (grp);
343 }
344
345 if (req->self) 331 if (req->self)
346 { 332 {
347 sv_unmagic (req->self, PERL_MAGIC_ext); 333 sv_unmagic (req->self, PERL_MAGIC_ext);
348 SvREFCNT_dec (req->self); 334 SvREFCNT_dec (req->self);
349 } 335 }
350 336
351 SvREFCNT_dec (req->data);
352 SvREFCNT_dec (req->fh); 337 SvREFCNT_dec (req->sv1);
353 SvREFCNT_dec (req->fh2); 338 SvREFCNT_dec (req->sv2);
354 SvREFCNT_dec (req->callback); 339 SvREFCNT_dec (req->callback);
355 Safefree (req->statdata);
356
357 if (req->type == REQ_READDIR && req->result >= 0)
358 free (req->data2ptr);
359 340
360 Safefree (req); 341 Safefree (req);
361} 342}
362 343
363static void req_cancel (aio_req req) 344static void req_cancel_subs (aio_req grp)
364{ 345{
365 req->flags |= FLAG_CANCELLED; 346 aio_req sub;
366 347
367 if (req->type == REQ_GROUP) 348 if (grp->type != EIO_GROUP)
349 return;
350
351 SvREFCNT_dec (grp->sv2);
352 grp->sv2 = 0;
353
354 eio_grp_cancel (grp);
355}
356
357#ifdef USE_SOCKETS_AS_HANDLES
358# define TO_SOCKET(x) (win32_get_osfhandle (x))
359#else
360# define TO_SOCKET(x) (x)
361#endif
362
363static void
364create_respipe (void)
365{
366 int old_readfd = respipe [0];
367
368 if (respipe [1] >= 0)
369 respipe_close (TO_SOCKET (respipe [1]));
370
371#ifdef _WIN32
372 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
373#else
374 if (pipe (respipe))
375#endif
376 croak ("unable to initialize result pipe");
377
378 if (old_readfd >= 0)
368 { 379 {
369 aio_req sub; 380 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
381 croak ("unable to initialize result pipe(2)");
370 382
371 for (sub = req->grp_first; sub; sub = sub->grp_next) 383 respipe_close (respipe [0]);
372 req_cancel (sub); 384 respipe [0] = old_readfd;
373 } 385 }
374}
375 386
376static int poll_cb () 387#ifdef _WIN32
377{ 388 int arg = 1;
378 dSP; 389 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
379 int count = 0; 390 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
380 int do_croak = 0; 391#else
381 aio_req req; 392 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
393 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
394#endif
395 croak ("unable to initialize result pipe(3)");
382 396
383 for (;;) 397 respipe_osf [0] = TO_SOCKET (respipe [0]);
398 respipe_osf [1] = TO_SOCKET (respipe [1]);
399}
400
401static void poll_wait (void)
402{
403 fd_set rfd;
404
405 while (eio_nreqs ())
384 { 406 {
385 pthread_mutex_lock (&reslock); 407 int size;
386 req = ress;
387 408
409 X_LOCK (reslock);
410 size = res_queue.size;
411 X_UNLOCK (reslock);
412
388 if (req) 413 if (size)
389 {
390 ress = req->next;
391
392 if (!ress)
393 {
394 /* read any signals sent by the worker threads */
395 char buf [32];
396 while (read (respipe [0], buf, 32) == 32)
397 ;
398
399 rese = 0;
400 }
401 }
402
403 pthread_mutex_unlock (&reslock);
404
405 if (!req)
406 break; 414 return;
407 415
408 --nreqs; 416 maybe_start_thread ();
409 417
410 if (req->type == REQ_QUIT) 418 FD_ZERO (&rfd);
411 started--; 419 FD_SET (respipe [0], &rfd);
412 else if (req->type == REQ_GROUP && req->length)
413 {
414 req->fd = 1; /* mark request as delayed */
415 continue;
416 }
417 else
418 {
419 if (req->type == REQ_READ)
420 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
421 420
422 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) 421 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
423 SvREADONLY_off (req->data);
424
425 if (req->statdata)
426 {
427 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
428 PL_laststatval = req->result;
429 PL_statcache = *(req->statdata);
430 }
431
432 req_invoke (req);
433
434 count++;
435 }
436
437 req_free (req);
438 } 422 }
439
440 return count;
441} 423}
442 424
443static void *aio_proc(void *arg); 425static int poll_cb (void)
444
445static void start_thread (void)
446{ 426{
447 sigset_t fullsigset, oldsigset; 427 int res;
448 pthread_t tid;
449 pthread_attr_t attr;
450 428
451 pthread_attr_init (&attr); 429 do
452 pthread_attr_setstacksize (&attr, STACKSIZE);
453 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
454
455 sigfillset (&fullsigset);
456 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
457
458 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
459 started++;
460
461 sigprocmask (SIG_SETMASK, &oldsigset, 0);
462}
463
464static void req_send (aio_req req)
465{
466 while (started < wanted && nreqs >= started)
467 start_thread ();
468
469 ++nreqs;
470
471 pthread_mutex_lock (&reqlock);
472
473 req->next = 0;
474
475 if (reqe)
476 { 430 {
477 reqe->next = req; 431 res = eio_poll ();
478 reqe = req; 432
433 if (res > 0)
434 croak (0);
479 } 435 }
480 else 436 while (max_outstanding && max_outstanding <= eio_nreqs ());
481 reqe = reqs = req;
482
483 pthread_cond_signal (&reqwait);
484 pthread_mutex_unlock (&reqlock);
485
486 if (nreqs > max_outstanding)
487 for (;;)
488 {
489 poll_cb ();
490
491 if (nreqs <= max_outstanding)
492 break;
493
494 poll_wait ();
495 }
496}
497
498static void end_thread (void)
499{
500 aio_req req;
501 Newz (0, req, 1, aio_cb);
502 req->type = REQ_QUIT;
503
504 req_send (req);
505}
506
507static void min_parallel (int nthreads)
508{
509 if (wanted < nthreads)
510 wanted = nthreads;
511}
512
513static void max_parallel (int nthreads)
514{
515 int cur = started;
516
517 if (wanted > nthreads)
518 wanted = nthreads;
519
520 while (cur > wanted)
521 {
522 end_thread ();
523 cur--;
524 }
525
526 while (started > wanted)
527 {
528 poll_wait ();
529 poll_cb ();
530 }
531}
532
533static void create_pipe ()
534{
535 if (pipe (respipe))
536 croak ("unable to initialize result pipe");
537
538 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
539 croak ("cannot set result pipe to nonblocking mode");
540
541 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
542 croak ("cannot set result pipe to nonblocking mode");
543}
544
545/*****************************************************************************/
546/* work around various missing functions */
547
548#if !HAVE_PREADWRITE
549# define pread aio_pread
550# define pwrite aio_pwrite
551
552/*
553 * make our pread/pwrite safe against themselves, but not against
554 * normal read/write by using a mutex. slows down execution a lot,
555 * but that's your problem, not mine.
556 */
557static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
558
559static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
560{
561 ssize_t res;
562 off_t ooffset;
563
564 pthread_mutex_lock (&preadwritelock);
565 ooffset = lseek (fd, 0, SEEK_CUR);
566 lseek (fd, offset, SEEK_SET);
567 res = read (fd, buf, count);
568 lseek (fd, ooffset, SEEK_SET);
569 pthread_mutex_unlock (&preadwritelock);
570 437
571 return res; 438 return res;
572} 439}
573 440
574static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
575{
576 ssize_t res;
577 off_t ooffset;
578
579 pthread_mutex_lock (&preadwritelock);
580 ooffset = lseek (fd, 0, SEEK_CUR);
581 lseek (fd, offset, SEEK_SET);
582 res = write (fd, buf, count);
583 lseek (fd, offset, SEEK_SET);
584 pthread_mutex_unlock (&preadwritelock);
585
586 return res;
587}
588#endif
589
590#if !HAVE_FDATASYNC
591# define fdatasync fsync
592#endif
593
594#if !HAVE_READAHEAD
595# define readahead aio_readahead
596
597static ssize_t readahead (int fd, off_t offset, size_t count)
598{
599 char readahead_buf[4096];
600
601 while (count > 0)
602 {
603 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
604
605 pread (fd, readahead_buf, len, offset);
606 offset += len;
607 count -= len;
608 }
609
610 errno = 0;
611}
612#endif
613
614#if !HAVE_READDIR_R
615# define readdir_r aio_readdir_r
616
617static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
618
619static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
620{
621 struct dirent *e;
622 int errorno;
623
624 pthread_mutex_lock (&readdirlock);
625
626 e = readdir (dirp);
627 errorno = errno;
628
629 if (e)
630 {
631 *res = ent;
632 strcpy (ent->d_name, e->d_name);
633 }
634 else
635 *res = 0;
636
637 pthread_mutex_unlock (&readdirlock);
638
639 errno = errorno;
640 return e ? 0 : -1;
641}
642#endif
643
644/* sendfile always needs emulation */
645static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
646{
647 ssize_t res;
648
649 if (!count)
650 return 0;
651
652#if HAVE_SENDFILE
653# if __linux
654 res = sendfile (ofd, ifd, &offset, count);
655
656# elif __freebsd
657 /*
658 * Of course, the freebsd sendfile is a dire hack with no thoughts
659 * wasted on making it similar to other I/O functions.
660 */
661 {
662 off_t sbytes;
663 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
664
665 if (res < 0 && sbytes)
666 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
667 res = sbytes;
668 }
669
670# elif __hpux
671 res = sendfile (ofd, ifd, offset, count, 0, 0);
672
673# elif __solaris
674 {
675 struct sendfilevec vec;
676 size_t sbytes;
677
678 vec.sfv_fd = ifd;
679 vec.sfv_flag = 0;
680 vec.sfv_off = offset;
681 vec.sfv_len = count;
682
683 res = sendfilev (ofd, &vec, 1, &sbytes);
684
685 if (res < 0 && sbytes)
686 res = sbytes;
687 }
688
689# endif
690#else
691 res = -1;
692 errno = ENOSYS;
693#endif
694
695 if (res < 0
696 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
697#if __solaris
698 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
699#endif
700 )
701 )
702 {
703 /* emulate sendfile. this is a major pain in the ass */
704 char buf[4096];
705 res = 0;
706
707 while (count)
708 {
709 ssize_t cnt;
710
711 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
712
713 if (cnt <= 0)
714 {
715 if (cnt && !res) res = -1;
716 break;
717 }
718
719 cnt = write (ofd, buf, cnt);
720
721 if (cnt <= 0)
722 {
723 if (cnt && !res) res = -1;
724 break;
725 }
726
727 offset += cnt;
728 res += cnt;
729 count -= cnt;
730 }
731 }
732
733 return res;
734}
735
736/* read a full directory */
737static int scandir_ (const char *path, void **namesp)
738{
739 DIR *dirp = opendir (path);
740 union
741 {
742 struct dirent d;
743 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
744 } u;
745 struct dirent *entp;
746 char *name, *names;
747 int memlen = 4096;
748 int memofs = 0;
749 int res = 0;
750 int errorno;
751
752 if (!dirp)
753 return -1;
754
755 names = malloc (memlen);
756
757 for (;;)
758 {
759 errno = 0, readdir_r (dirp, &u.d, &entp);
760
761 if (!entp)
762 break;
763
764 name = entp->d_name;
765
766 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
767 {
768 int len = strlen (name) + 1;
769
770 res++;
771
772 while (memofs + len > memlen)
773 {
774 memlen *= 2;
775 names = realloc (names, memlen);
776 if (!names)
777 break;
778 }
779
780 memcpy (names + memofs, name, len);
781 memofs += len;
782 }
783 }
784
785 errorno = errno;
786 closedir (dirp);
787
788 if (errorno)
789 {
790 free (names);
791 errno = errorno;
792 res = -1;
793 }
794
795 *namesp = (void *)names;
796 return res;
797}
798
799/*****************************************************************************/
800
801static void *aio_proc (void *thr_arg)
802{
803 aio_req req;
804 int type;
805
806 do
807 {
808 pthread_mutex_lock (&reqlock);
809
810 for (;;)
811 {
812 req = reqs;
813
814 if (reqs)
815 {
816 reqs = reqs->next;
817 if (!reqs) reqe = 0;
818 }
819
820 if (req)
821 break;
822
823 pthread_cond_wait (&reqwait, &reqlock);
824 }
825
826 pthread_mutex_unlock (&reqlock);
827
828 errno = 0; /* strictly unnecessary */
829 type = req->type; /* remember type for QUIT check */
830
831 if (!(req->flags & FLAG_CANCELLED))
832 switch (type)
833 {
834 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
835 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
836
837 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
838 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
839
840 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
841 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
842 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
843
844 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
845 case REQ_CLOSE: req->result = close (req->fd); break;
846 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
847 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
848 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
849 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
850 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
851
852 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
853 case REQ_FSYNC: req->result = fsync (req->fd); break;
854 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
855
856 case REQ_SLEEP:
857 {
858 struct timeval tv;
859
860 tv.tv_sec = req->fd;
861 tv.tv_usec = req->fd2;
862
863 req->result = select (0, 0, 0, 0, &tv);
864 }
865
866 case REQ_GROUP:
867 case REQ_NOP:
868 case REQ_QUIT:
869 break;
870
871 default:
872 req->result = ENOSYS;
873 break;
874 }
875
876 req->errorno = errno;
877
878 pthread_mutex_lock (&reslock);
879
880 req->next = 0;
881
882 if (rese)
883 {
884 rese->next = req;
885 rese = req;
886 }
887 else
888 {
889 rese = ress = req;
890
891 /* write a dummy byte to the pipe so fh becomes ready */
892 write (respipe [1], &respipe, 1);
893 }
894
895 pthread_mutex_unlock (&reslock);
896 }
897 while (type != REQ_QUIT);
898
899 return 0;
900}
901
902/*****************************************************************************/
903
904static void atfork_prepare (void)
905{
906 pthread_mutex_lock (&reqlock);
907 pthread_mutex_lock (&reslock);
908#if !HAVE_PREADWRITE
909 pthread_mutex_lock (&preadwritelock);
910#endif
911#if !HAVE_READDIR_R
912 pthread_mutex_lock (&readdirlock);
913#endif
914}
915
916static void atfork_parent (void)
917{
918#if !HAVE_READDIR_R
919 pthread_mutex_unlock (&readdirlock);
920#endif
921#if !HAVE_PREADWRITE
922 pthread_mutex_unlock (&preadwritelock);
923#endif
924 pthread_mutex_unlock (&reslock);
925 pthread_mutex_unlock (&reqlock);
926}
927
928static void atfork_child (void) 441static void atfork_child (void)
929{ 442{
930 aio_req prv;
931
932 started = 0;
933
934 while (reqs)
935 {
936 prv = reqs;
937 reqs = prv->next;
938 req_free (prv);
939 }
940
941 reqs = reqe = 0;
942
943 while (ress)
944 {
945 prv = ress;
946 ress = prv->next;
947 req_free (prv);
948 }
949
950 ress = rese = 0;
951
952 close (respipe [0]);
953 close (respipe [1]);
954 create_pipe (); 443 create_respipe ();
955
956 atfork_parent ();
957} 444}
958 445
959#define dREQ \ 446#define dREQ \
960 aio_req req; \ 447 aio_req req; \
961 int req_pri = next_pri; \ 448 int req_pri = next_pri; \
962 next_pri = DEFAULT_PRI + PRI_BIAS; \ 449 next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
963 \ 450 \
964 if (SvOK (callback) && !SvROK (callback)) \ 451 if (SvOK (callback) && !SvROK (callback)) \
965 croak ("callback must be undef or of reference type"); \ 452 croak ("callback must be undef or of reference type"); \
966 \ 453 \
967 Newz (0, req, 1, aio_cb); \ 454 Newz (0, req, 1, eio_req); \
968 if (!req) \ 455 if (!req) \
969 croak ("out of memory during aio_req allocation"); \ 456 croak ("out of memory during eio_req allocation"); \
970 \ 457 \
971 req->callback = newSVsv (callback); \ 458 req->callback = newSVsv (callback); \
972 req->pri = req_pri 459 req->pri = req_pri
973 460
974#define REQ_SEND \ 461#define REQ_SEND \
975 req_send (req); \ 462 req_submit (req); \
976 \ 463 \
977 if (GIMME_V != G_VOID) \ 464 if (GIMME_V != G_VOID) \
978 XPUSHs (req_sv (req, AIO_REQ_KLASS)); 465 XPUSHs (req_sv (req, AIO_REQ_KLASS));
979 466
980MODULE = IO::AIO PACKAGE = IO::AIO 467MODULE = IO::AIO PACKAGE = IO::AIO
981 468
982PROTOTYPES: ENABLE 469PROTOTYPES: ENABLE
983 470
984BOOT: 471BOOT:
985{ 472{
986 HV *stash = gv_stashpv ("IO::AIO", 1); 473 stash = gv_stashpv ("IO::AIO", 1);
474
987 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 475 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
988 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 476 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
989 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); 477 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
478 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
479 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
480#ifdef _WIN32
481 X_MUTEX_CHECK (wrklock);
482 X_MUTEX_CHECK (reslock);
483 X_MUTEX_CHECK (reqlock);
484 X_MUTEX_CHECK (reqwait);
485 X_MUTEX_CHECK (preadwritelock);
486 X_MUTEX_CHECK (readdirlock);
990 487
991 create_pipe (); 488 X_COND_CHECK (reqwait);
992 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 489#else
993} 490 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
491#endif
994 492
493 create_respipe ();
494
495 if (eio_init (want_poll, done_poll) < 0)
496 croak ("IO::AIO: unable to initialise eio library");
497
498 /* atfork child called in fifo order, so before eio's handler */
499 X_THREAD_ATFORK (0, 0, atfork_child);
500}
501
995void 502void
996min_parallel (nthreads) 503max_poll_reqs (int nreqs)
997 int nthreads
998 PROTOTYPE: $ 504 PROTOTYPE: $
505 CODE:
506 eio_set_max_poll_reqs (nreqs);
999 507
1000void 508void
1001max_parallel (nthreads) 509max_poll_time (double nseconds)
1002 int nthreads
1003 PROTOTYPE: $ 510 PROTOTYPE: $
1004
1005int
1006max_outstanding (nreqs)
1007 int nreqs
1008 PROTOTYPE: $
1009 CODE: 511 CODE:
1010 RETVAL = max_outstanding; 512 eio_set_max_poll_time (nseconds);
513
514void
515min_parallel (int nthreads)
516 PROTOTYPE: $
517 CODE:
518 eio_set_min_parallel (nthreads);
519
520void
521max_parallel (int nthreads)
522 PROTOTYPE: $
523 CODE:
524 eio_set_max_parallel (nthreads);
525
526void
527max_idle (int nthreads)
528 PROTOTYPE: $
529 CODE:
530 eio_set_max_idle (nthreads);
531
532void
533max_outstanding (int maxreqs)
534 PROTOTYPE: $
535 CODE:
1011 max_outstanding = nreqs; 536 max_outstanding = maxreqs;
1012 537
1013void 538void
1014aio_open (pathname,flags,mode,callback=&PL_sv_undef) 539aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1015 SV * pathname
1016 int flags
1017 int mode
1018 SV * callback
1019 PROTOTYPE: $$$;$ 540 PROTOTYPE: $$$;$
1020 PPCODE: 541 PPCODE:
1021{ 542{
1022 dREQ; 543 dREQ;
1023 544
1024 req->type = REQ_OPEN; 545 req->type = EIO_OPEN;
1025 req->data = newSVsv (pathname); 546 req->sv1 = newSVsv (pathname);
1026 req->dataptr = SvPVbyte_nolen (req->data); 547 req->ptr1 = SvPVbyte_nolen (req->sv1);
1027 req->fd = flags; 548 req->int1 = flags;
1028 req->mode = mode; 549 req->int2 = mode;
1029 550
1030 REQ_SEND; 551 REQ_SEND;
1031} 552}
1032 553
1033void 554void
1034aio_close (fh,callback=&PL_sv_undef) 555aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1035 SV * fh
1036 SV * callback
1037 PROTOTYPE: $;$ 556 PROTOTYPE: $;$
1038 ALIAS: 557 ALIAS:
1039 aio_close = REQ_CLOSE
1040 aio_fsync = REQ_FSYNC 558 aio_fsync = EIO_FSYNC
1041 aio_fdatasync = REQ_FDATASYNC 559 aio_fdatasync = EIO_FDATASYNC
1042 PPCODE: 560 PPCODE:
1043{ 561{
1044 dREQ; 562 dREQ;
1045 563
1046 req->type = ix; 564 req->type = ix;
1047 req->fh = newSVsv (fh); 565 req->sv1 = newSVsv (fh);
1048 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 566 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1049 567
1050 REQ_SEND (req); 568 REQ_SEND (req);
1051} 569}
1052 570
1053void 571void
572aio_close (SV *fh, SV *callback=&PL_sv_undef)
573 PROTOTYPE: $;$
574 PPCODE:
575{
576 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
577 dREQ;
578
579 if (close_pipe < 0)
580 {
581 int pipefd [2];
582
583 if (pipe (pipefd) < 0
584 || close (pipefd [1]) < 0
585 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
586 abort (); /*D*/
587
588 close_pipe = pipefd [0];
589 }
590
591 req->type = EIO_DUP2;
592 req->int1 = close_pipe;
593 req->sv2 = newSVsv (fh);
594 req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
595
596 REQ_SEND (req);
597}
598
599void
1054aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 600aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1055 SV * fh
1056 UV offset
1057 UV length
1058 SV * data
1059 UV dataoffset
1060 SV * callback
1061 ALIAS: 601 ALIAS:
1062 aio_read = REQ_READ 602 aio_read = EIO_READ
1063 aio_write = REQ_WRITE 603 aio_write = EIO_WRITE
1064 PROTOTYPE: $$$$$;$ 604 PROTOTYPE: $$$$$;$
1065 PPCODE: 605 PPCODE:
1066{ 606{
1067 aio_req req;
1068 STRLEN svlen; 607 STRLEN svlen;
1069 char *svptr = SvPVbyte (data, svlen); 608 char *svptr = SvPVbyte (data, svlen);
609 UV len = SvUV (length);
1070 610
1071 SvUPGRADE (data, SVt_PV); 611 SvUPGRADE (data, SVt_PV);
1072 SvPOK_on (data); 612 SvPOK_on (data);
1073 613
1074 if (dataoffset < 0) 614 if (dataoffset < 0)
1075 dataoffset += svlen; 615 dataoffset += svlen;
1076 616
1077 if (dataoffset < 0 || dataoffset > svlen) 617 if (dataoffset < 0 || dataoffset > svlen)
1078 croak ("data offset outside of string"); 618 croak ("dataoffset outside of data scalar");
1079 619
1080 if (ix == REQ_WRITE) 620 if (ix == EIO_WRITE)
1081 { 621 {
1082 /* write: check length and adjust. */ 622 /* write: check length and adjust. */
1083 if (length < 0 || length + dataoffset > svlen) 623 if (!SvOK (length) || len + dataoffset > svlen)
1084 length = svlen - dataoffset; 624 len = svlen - dataoffset;
1085 } 625 }
1086 else 626 else
1087 { 627 {
1088 /* read: grow scalar as necessary */ 628 /* read: grow scalar as necessary */
1089 svptr = SvGROW (data, length + dataoffset); 629 svptr = SvGROW (data, len + dataoffset + 1);
1090 } 630 }
1091 631
1092 if (length < 0) 632 if (len < 0)
1093 croak ("length must not be negative"); 633 croak ("length must not be negative");
1094 634
1095 { 635 {
1096 dREQ; 636 dREQ;
1097 637
1098 req->type = ix; 638 req->type = ix;
1099 req->fh = newSVsv (fh); 639 req->sv1 = newSVsv (fh);
1100 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 640 req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1101 : IoOFP (sv_2io (fh))); 641 : IoOFP (sv_2io (fh)));
642 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1102 req->offset = offset; 643 req->size = len;
1103 req->length = length;
1104 req->data = SvREFCNT_inc (data); 644 req->sv2 = SvREFCNT_inc (data);
1105 req->dataptr = (char *)svptr + dataoffset; 645 req->ptr2 = (char *)svptr + dataoffset;
646 req->stroffset = dataoffset;
1106 647
1107 if (!SvREADONLY (data)) 648 if (!SvREADONLY (data))
1108 { 649 {
1109 SvREADONLY_on (data); 650 SvREADONLY_on (data);
1110 req->data2ptr = (void *)data; 651 req->flags |= FLAG_SV2_RO_OFF;
1111 } 652 }
1112 653
1113 REQ_SEND; 654 REQ_SEND;
1114 } 655 }
1115} 656}
1116 657
1117void 658void
659aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
660 PROTOTYPE: $$;$
661 PPCODE:
662{
663 SV *data;
664 dREQ;
665
666 data = newSV (NAME_MAX);
667 SvPOK_on (data);
668
669 req->type = EIO_READLINK;
670 req->sv1 = newSVsv (path);
671 req->ptr1 = SvPVbyte_nolen (req->sv1);
672 req->sv2 = data;
673 req->ptr2 = SvPVbyte_nolen (data);
674
675 REQ_SEND;
676}
677
678void
1118aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 679aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1119 SV * out_fh
1120 SV * in_fh
1121 UV in_offset
1122 UV length
1123 SV * callback
1124 PROTOTYPE: $$$$;$ 680 PROTOTYPE: $$$$;$
1125 PPCODE: 681 PPCODE:
1126{ 682{
1127 dREQ; 683 dREQ;
1128 684
1129 req->type = REQ_SENDFILE; 685 req->type = EIO_SENDFILE;
1130 req->fh = newSVsv (out_fh); 686 req->sv1 = newSVsv (out_fh);
1131 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 687 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1132 req->fh2 = newSVsv (in_fh); 688 req->sv2 = newSVsv (in_fh);
1133 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 689 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1134 req->offset = in_offset; 690 req->offs = SvVAL64 (in_offset);
1135 req->length = length; 691 req->size = length;
1136 692
1137 REQ_SEND; 693 REQ_SEND;
1138} 694}
1139 695
1140void 696void
1141aio_readahead (fh,offset,length,callback=&PL_sv_undef) 697aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1142 SV * fh
1143 UV offset
1144 IV length
1145 SV * callback
1146 PROTOTYPE: $$$;$ 698 PROTOTYPE: $$$;$
1147 PPCODE: 699 PPCODE:
1148{ 700{
1149 dREQ; 701 dREQ;
1150 702
1151 req->type = REQ_READAHEAD; 703 req->type = EIO_READAHEAD;
1152 req->fh = newSVsv (fh); 704 req->sv1 = newSVsv (fh);
1153 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 705 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1154 req->offset = offset; 706 req->offs = SvVAL64 (offset);
1155 req->length = length; 707 req->size = length;
1156 708
1157 REQ_SEND; 709 REQ_SEND;
1158} 710}
1159 711
1160void 712void
1161aio_stat (fh_or_path,callback=&PL_sv_undef) 713aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1162 SV * fh_or_path
1163 SV * callback
1164 ALIAS: 714 ALIAS:
1165 aio_stat = REQ_STAT 715 aio_stat = EIO_STAT
1166 aio_lstat = REQ_LSTAT 716 aio_lstat = EIO_LSTAT
1167 PPCODE: 717 PPCODE:
1168{ 718{
1169 dREQ; 719 dREQ;
1170 720
1171 New (0, req->statdata, 1, Stat_t); 721 req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1172 if (!req->statdata) 722 if (!req->ptr2)
1173 { 723 {
1174 req_free (req); 724 req_destroy (req);
1175 croak ("out of memory during aio_req->statdata allocation"); 725 croak ("out of memory during aio_stat statdata allocation");
1176 } 726 }
727
728 req->flags |= EIO_FLAG_PTR2_FREE;
729 req->sv1 = newSVsv (fh_or_path);
1177 730
1178 if (SvPOK (fh_or_path)) 731 if (SvPOK (fh_or_path))
1179 { 732 {
1180 req->type = ix; 733 req->type = ix;
1181 req->data = newSVsv (fh_or_path);
1182 req->dataptr = SvPVbyte_nolen (req->data); 734 req->ptr1 = SvPVbyte_nolen (req->sv1);
1183 } 735 }
1184 else 736 else
1185 { 737 {
1186 req->type = REQ_FSTAT; 738 req->type = EIO_FSTAT;
1187 req->fh = newSVsv (fh_or_path);
1188 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 739 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1189 } 740 }
1190 741
1191 REQ_SEND; 742 REQ_SEND;
1192} 743}
1193 744
1194void 745void
746aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
747 PPCODE:
748{
749 dREQ;
750
751 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
752 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
753 req->sv1 = newSVsv (fh_or_path);
754
755 if (SvPOK (fh_or_path))
756 {
757 req->type = EIO_UTIME;
758 req->ptr1 = SvPVbyte_nolen (req->sv1);
759 }
760 else
761 {
762 req->type = EIO_FUTIME;
763 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
764 }
765
766 REQ_SEND;
767}
768
769void
770aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
771 PPCODE:
772{
773 dREQ;
774
775 req->sv1 = newSVsv (fh_or_path);
776 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
777
778 if (SvPOK (fh_or_path))
779 {
780 req->type = EIO_TRUNCATE;
781 req->ptr1 = SvPVbyte_nolen (req->sv1);
782 }
783 else
784 {
785 req->type = EIO_FTRUNCATE;
786 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
787 }
788
789 REQ_SEND;
790}
791
792void
793aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
794 ALIAS:
795 aio_chmod = EIO_CHMOD
796 aio_fchmod = EIO_FCHMOD
797 aio_mkdir = EIO_MKDIR
798 PPCODE:
799{
800 dREQ;
801
802 req->type = ix;
803 req->int2 = mode;
804 req->sv1 = newSVsv (fh_or_path);
805
806 if (ix == EIO_FCHMOD)
807 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
808 else
809 req->ptr1 = SvPVbyte_nolen (req->sv1);
810
811 REQ_SEND;
812}
813
814void
815aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
816 PPCODE:
817{
818 dREQ;
819
820 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
821 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
822 req->sv1 = newSVsv (fh_or_path);
823
824 if (SvPOK (fh_or_path))
825 {
826 req->type = EIO_CHOWN;
827 req->ptr1 = SvPVbyte_nolen (req->sv1);
828 }
829 else
830 {
831 req->type = EIO_FCHOWN;
832 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
833 }
834
835 REQ_SEND;
836}
837
838void
1195aio_unlink (pathname,callback=&PL_sv_undef) 839aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1196 SV * pathname
1197 SV * callback
1198 ALIAS: 840 ALIAS:
1199 aio_unlink = REQ_UNLINK 841 aio_unlink = EIO_UNLINK
1200 aio_rmdir = REQ_RMDIR 842 aio_rmdir = EIO_RMDIR
1201 aio_readdir = REQ_READDIR 843 aio_readdir = EIO_READDIR
1202 PPCODE: 844 PPCODE:
1203{ 845{
1204 dREQ; 846 dREQ;
1205 847
1206 req->type = ix; 848 req->type = ix;
1207 req->data = newSVsv (pathname); 849 req->sv1 = newSVsv (pathname);
1208 req->dataptr = SvPVbyte_nolen (req->data); 850 req->ptr1 = SvPVbyte_nolen (req->sv1);
851
852 REQ_SEND;
853}
854
855void
856aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
857 ALIAS:
858 aio_link = EIO_LINK
859 aio_symlink = EIO_SYMLINK
860 aio_rename = EIO_RENAME
861 PPCODE:
862{
863 dREQ;
864
865 req->type = ix;
866 req->sv1 = newSVsv (oldpath);
867 req->ptr1 = SvPVbyte_nolen (req->sv1);
868 req->sv2 = newSVsv (newpath);
869 req->ptr2 = SvPVbyte_nolen (req->sv2);
1209 870
1210 REQ_SEND; 871 REQ_SEND;
1211} 872}
1212 873
1213void 874void
1214aio_link (oldpath,newpath,callback=&PL_sv_undef) 875aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1215 SV * oldpath
1216 SV * newpath
1217 SV * callback
1218 ALIAS:
1219 aio_link = REQ_LINK
1220 aio_symlink = REQ_SYMLINK
1221 aio_rename = REQ_RENAME
1222 PPCODE: 876 PPCODE:
1223{ 877{
1224 dREQ; 878 dREQ;
1225 879
1226 req->type = ix; 880 req->type = EIO_MKNOD;
1227 req->fh = newSVsv (oldpath); 881 req->sv1 = newSVsv (pathname);
1228 req->data2ptr = SvPVbyte_nolen (req->fh); 882 req->ptr1 = SvPVbyte_nolen (req->sv1);
1229 req->data = newSVsv (newpath); 883 req->int2 = (mode_t)mode;
1230 req->dataptr = SvPVbyte_nolen (req->data); 884 req->offs = dev;
1231 885
1232 REQ_SEND; 886 REQ_SEND;
1233} 887}
1234 888
1235void 889void
1236aio_sleep (delay,callback=&PL_sv_undef) 890aio_busy (double delay, SV *callback=&PL_sv_undef)
1237 double delay
1238 SV * callback
1239 PPCODE: 891 PPCODE:
1240{ 892{
1241 dREQ; 893 dREQ;
1242 894
1243 req->type = REQ_SLEEP; 895 req->type = EIO_BUSY;
1244 req->fd = delay < 0. ? 0 : delay; 896 req->nv1 = delay < 0. ? 0. : delay;
1245 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1246 897
1247 REQ_SEND; 898 REQ_SEND;
1248} 899}
1249 900
1250void 901void
1251aio_group (callback=&PL_sv_undef) 902aio_group (SV *callback=&PL_sv_undef)
1252 SV * callback
1253 PROTOTYPE: ;$ 903 PROTOTYPE: ;$
1254 PPCODE: 904 PPCODE:
1255{ 905{
1256 dREQ; 906 dREQ;
1257 907
1258 req->type = REQ_GROUP; 908 req->type = EIO_GROUP;
909
1259 req_send (req); 910 eio_submit (req);
1260
1261 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 911 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1262} 912}
1263 913
1264void 914void
1265aio_nop (callback=&PL_sv_undef) 915aio_nop (SV *callback=&PL_sv_undef)
1266 SV * callback 916 ALIAS:
917 aio_nop = EIO_NOP
918 aio_sync = EIO_SYNC
1267 PPCODE: 919 PPCODE:
1268{ 920{
1269 dREQ; 921 dREQ;
1270 922
1271 req->type = REQ_NOP; 923 req->type = ix;
1272 924
1273 REQ_SEND; 925 REQ_SEND;
1274} 926}
1275 927
1276#if 0 928int
1277 929aioreq_pri (int pri = 0)
1278void 930 PROTOTYPE: ;$
1279aio_pri (int pri = DEFAULT_PRI)
1280 CODE: 931 CODE:
932 RETVAL = next_pri - EIO_PRI_BIAS;
933 if (items > 0)
934 {
1281 if (pri < PRI_MIN) pri = PRI_MIN; 935 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1282 if (pri > PRI_MAX) pri = PRI_MAX; 936 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1283 next_pri = pri + PRI_BIAS; 937 next_pri = pri + EIO_PRI_BIAS;
938 }
939 OUTPUT:
940 RETVAL
1284 941
1285#endif 942void
943aioreq_nice (int nice = 0)
944 CODE:
945 nice = next_pri - nice;
946 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
947 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
948 next_pri = nice + EIO_PRI_BIAS;
1286 949
1287void 950void
1288flush () 951flush ()
1289 PROTOTYPE: 952 PROTOTYPE:
1290 CODE: 953 CODE:
1291 while (nreqs) 954 while (eio_nreqs ())
1292 { 955 {
1293 poll_wait (); 956 poll_wait ();
1294 poll_cb (); 957 poll_cb ();
1295 } 958 }
1296 959
1297void 960int
1298poll() 961poll()
1299 PROTOTYPE: 962 PROTOTYPE:
1300 CODE: 963 CODE:
1301 if (nreqs)
1302 {
1303 poll_wait (); 964 poll_wait ();
1304 poll_cb (); 965 RETVAL = poll_cb ();
1305 } 966 OUTPUT:
967 RETVAL
1306 968
1307int 969int
1308poll_fileno() 970poll_fileno()
1309 PROTOTYPE: 971 PROTOTYPE:
1310 CODE: 972 CODE:
… …
1322 984
1323void 985void
1324poll_wait() 986poll_wait()
1325 PROTOTYPE: 987 PROTOTYPE:
1326 CODE: 988 CODE:
1327 if (nreqs)
1328 poll_wait (); 989 poll_wait ();
1329 990
1330int 991int
1331nreqs() 992nreqs()
1332 PROTOTYPE: 993 PROTOTYPE:
1333 CODE: 994 CODE:
1334 RETVAL = nreqs; 995 RETVAL = eio_nreqs ();
1335 OUTPUT: 996 OUTPUT:
1336 RETVAL 997 RETVAL
1337 998
999int
1000nready()
1001 PROTOTYPE:
1002 CODE:
1003 RETVAL = eio_nready ();
1004 OUTPUT:
1005 RETVAL
1006
1007int
1008npending()
1009 PROTOTYPE:
1010 CODE:
1011 RETVAL = eio_npending ();
1012 OUTPUT:
1013 RETVAL
1014
1015int
1016nthreads()
1017 PROTOTYPE:
1018 CODE:
1019 if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
1020 RETVAL = started;
1021 if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1022 OUTPUT:
1023 RETVAL
1024
1025void _on_next_submit (SV *cb)
1026 CODE:
1027 SvREFCNT_dec (on_next_submit);
1028 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1029
1338PROTOTYPES: DISABLE 1030PROTOTYPES: DISABLE
1339 1031
1340MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1032MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1341 1033
1342void 1034void
1343cancel (aio_req_ornot req) 1035cancel (aio_req_ornot req)
1344 PROTOTYPE:
1345 CODE: 1036 CODE:
1346 req_cancel (req); 1037 eio_cancel (req);
1347 1038
1348void 1039void
1349cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1040cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1350 CODE: 1041 CODE:
1351 SvREFCNT_dec (req->callback); 1042 SvREFCNT_dec (req->callback);
… …
1356void 1047void
1357add (aio_req grp, ...) 1048add (aio_req grp, ...)
1358 PPCODE: 1049 PPCODE:
1359{ 1050{
1360 int i; 1051 int i;
1361 aio_req req;
1362 1052
1363 if (grp->fd == 2) 1053 if (grp->int1 == 2)
1364 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1054 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1365 1055
1366 for (i = 1; i < items; ++i ) 1056 for (i = 1; i < items; ++i )
1367 { 1057 {
1058 aio_req req;
1059
1368 if (GIMME_V != G_VOID) 1060 if (GIMME_V != G_VOID)
1369 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1061 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1370 1062
1371 req = SvAIO_REQ (ST (i)); 1063 req = SvAIO_REQ (ST (i));
1372 1064
1373 if (req) 1065 if (req)
1374 { 1066 eio_grp_add (grp, req);
1375 ++grp->length;
1376 req->grp = grp;
1377
1378 req->grp_prev = 0;
1379 req->grp_next = grp->grp_first;
1380
1381 if (grp->grp_first)
1382 grp->grp_first->grp_prev = req;
1383
1384 grp->grp_first = req;
1385 } 1067 }
1386 }
1387} 1068}
1069
1070void
1071cancel_subs (aio_req_ornot req)
1072 CODE:
1073 req_cancel_subs (req);
1388 1074
1389void 1075void
1390result (aio_req grp, ...) 1076result (aio_req grp, ...)
1391 CODE: 1077 CODE:
1392{ 1078{
1393 int i; 1079 int i;
1080 AV *av;
1081
1082 grp->errorno = errno;
1083
1394 AV *av = newAV (); 1084 av = newAV ();
1395 1085
1396 for (i = 1; i < items; ++i ) 1086 for (i = 1; i < items; ++i )
1397 av_push (av, newSVsv (ST (i))); 1087 av_push (av, newSVsv (ST (i)));
1398 1088
1399 SvREFCNT_dec (grp->data); 1089 SvREFCNT_dec (grp->sv1);
1400 grp->data = (SV *)av; 1090 grp->sv1 = (SV *)av;
1401} 1091}
1402 1092
1403void 1093void
1094errno (aio_req grp, int errorno = errno)
1095 CODE:
1096 grp->errorno = errorno;
1097
1098void
1404feed_limit (aio_req grp, int limit) 1099limit (aio_req grp, int limit)
1405 CODE: 1100 CODE:
1406 grp->fd2 = limit; 1101 eio_grp_limit (grp, limit);
1407 aio_grp_feed (grp);
1408 1102
1409void 1103void
1410feed (aio_req grp, SV *callback=&PL_sv_undef) 1104feed (aio_req grp, SV *callback=&PL_sv_undef)
1411 CODE: 1105 CODE:
1412{ 1106{
1413 SvREFCNT_dec (grp->fh2); 1107 SvREFCNT_dec (grp->sv2);
1414 grp->fh2 = newSVsv (callback); 1108 grp->sv2 = newSVsv (callback);
1415 1109
1416 if (grp->fd2 <= 0) 1110 if (grp->int2 <= 0)
1417 grp->fd2 = 2; 1111 grp->int2 = 2;
1418 1112
1419 aio_grp_feed (grp); 1113 eio_grp_limit (grp, grp->int2);
1420} 1114}
1421 1115

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