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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.1 by root, Sun Jul 10 17:07:44 2005 UTC vs.
Revision 1.17 by root, Sun Jul 31 18:45:48 2005 UTC

1#define PERL_NO_GET_CONTEXT
2
3#include "EXTERN.h" 1#include "EXTERN.h"
4#include "perl.h" 2#include "perl.h"
5#include "XSUB.h" 3#include "XSUB.h"
6 4
5#include "autoconf/config.h"
6
7#include <sys/types.h> 7#include <sys/types.h>
8#include <sys/stat.h> 8#include <sys/stat.h>
9
9#include <unistd.h> 10#include <unistd.h>
10#include <fcntl.h> 11#include <fcntl.h>
11#include <signal.h> 12#include <signal.h>
12#include <sched.h> 13#include <sched.h>
13#include <endian.h>
14 14
15#include <pthread.h> 15#include <pthread.h>
16#include <sys/syscall.h>
17 16
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 17typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 18typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 19typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
21 20
22#if __i386 || __amd64
23# define STACKSIZE ( 256 * sizeof (long))
24#elif __ia64 21#if __ia64
25# define STACKSIZE (8192 * sizeof (long)) 22# define STACKSIZE 65536
26#else 23#else
27# define STACKSIZE ( 512 * sizeof (long)) 24# define STACKSIZE 4096
28#endif 25#endif
29 26
30enum { 27enum {
31 REQ_QUIT, 28 REQ_QUIT,
32 REQ_OPEN, REQ_CLOSE, 29 REQ_OPEN, REQ_CLOSE,
… …
34 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, 31 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
35 REQ_FSYNC, REQ_FDATASYNC, 32 REQ_FSYNC, REQ_FDATASYNC,
36}; 33};
37 34
38typedef struct aio_cb { 35typedef struct aio_cb {
39 struct aio_cb *next; 36 struct aio_cb *volatile next;
40 37
41 int type; 38 int type;
42 39
43 int fd; 40 int fd;
44 off_t offset; 41 off_t offset;
45 size_t length; 42 size_t length;
46 ssize_t result; 43 ssize_t result;
47 mode_t mode; /* open */ 44 mode_t mode; /* open */
48 int errorno; 45 int errorno;
49 SV *data, *callback; 46 SV *data, *callback, *fh;
50 void *dataptr; 47 void *dataptr;
51 STRLEN dataoffset; 48 STRLEN dataoffset;
52 49
53 Stat_t *statdata; 50 Stat_t *statdata;
54} aio_cb; 51} aio_cb;
55 52
56typedef aio_cb *aio_req; 53typedef aio_cb *aio_req;
57 54
58static int started; 55static int started;
59static int nreqs; 56static volatile int nreqs;
57static int max_outstanding = 1<<30;
60static int reqpipe[2], respipe[2]; 58static int respipe [2];
61 59
60static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
61static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
62static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
63
62static aio_req qs, qe; /* queue start, queue end */ 64static volatile aio_req reqs, reqe; /* queue start, queue end */
63 65static volatile aio_req ress, rese; /* queue start, queue end */
64static void *aio_proc(void *arg);
65
66static void
67start_thread (void)
68{
69 sigset_t fullsigset, oldsigset;
70 pthread_t tid;
71 pthread_attr_t attr;
72
73 pthread_attr_init (&attr);
74 pthread_attr_setstacksize (&attr, STACKSIZE);
75 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
76
77 sigfillset (&fullsigset);
78 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
79
80 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
81 started++;
82
83 sigprocmask (SIG_SETMASK, &oldsigset, 0);
84}
85
86static void
87send_reqs (void)
88{
89 /* this write is atomic */
90 while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs)
91 {
92 qs = qs->next;
93 if (!qs) qe = 0;
94 }
95}
96
97static void
98send_req (aio_req req)
99{
100 nreqs++;
101 req->next = 0;
102
103 if (qe)
104 {
105 qe->next = req;
106 qe = req;
107 }
108 else
109 qe = qs = req;
110
111 send_reqs ();
112}
113
114static void
115end_thread (void)
116{
117 aio_req req;
118 New (0, req, 1, aio_cb);
119 req->type = REQ_QUIT;
120
121 send_req (req);
122}
123
124static void
125read_write (pTHX_
126 int dowrite, int fd, off_t offset, size_t length,
127 SV *data, STRLEN dataoffset, SV *callback)
128{
129 aio_req req;
130 STRLEN svlen;
131 char *svptr = SvPV (data, svlen);
132
133 SvUPGRADE (data, SVt_PV);
134 SvPOK_on (data);
135
136 if (dataoffset < 0)
137 dataoffset += svlen;
138
139 if (dataoffset < 0 || dataoffset > svlen)
140 croak ("data offset outside of string");
141
142 if (dowrite)
143 {
144 /* write: check length and adjust. */
145 if (length < 0 || length + dataoffset > svlen)
146 length = svlen - dataoffset;
147 }
148 else
149 {
150 /* read: grow scalar as necessary */
151 svptr = SvGROW (data, length + dataoffset);
152 }
153
154 if (length < 0)
155 croak ("length must not be negative");
156
157 Newz (0, req, 1, aio_cb);
158
159 if (!req)
160 croak ("out of memory during aio_req allocation");
161
162 req->type = dowrite ? REQ_WRITE : REQ_READ;
163 req->fd = fd;
164 req->offset = offset;
165 req->length = length;
166 req->data = SvREFCNT_inc (data);
167 req->dataptr = (char *)svptr + dataoffset;
168 req->callback = SvREFCNT_inc (callback);
169
170 send_req (req);
171}
172 66
173static void 67static void
174poll_wait () 68poll_wait ()
175{ 69{
70 if (nreqs && !ress)
71 {
176 fd_set rfd; 72 fd_set rfd;
177 FD_ZERO(&rfd); 73 FD_ZERO(&rfd);
178 FD_SET(respipe[0], &rfd); 74 FD_SET(respipe [0], &rfd);
179 75
180 select (respipe[0] + 1, &rfd, 0, 0, 0); 76 select (respipe [0] + 1, &rfd, 0, 0, 0);
77 }
181} 78}
182 79
183static int 80static int
184poll_cb (pTHX) 81poll_cb ()
185{ 82{
186 dSP; 83 dSP;
187 int count = 0; 84 int count = 0;
188 aio_req req; 85 aio_req req, prv;
189 86
190 while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 87 pthread_mutex_lock (&reslock);
88
89 {
90 /* read any signals sent by the worker threads */
91 char buf [32];
92 while (read (respipe [0], buf, 32) > 0)
93 ;
94 }
95
96 req = ress;
97 ress = rese = 0;
98
99 pthread_mutex_unlock (&reslock);
100
101 while (req)
191 { 102 {
192 nreqs--; 103 nreqs--;
193 104
194 if (req->type == REQ_QUIT) 105 if (req->type == REQ_QUIT)
195 started--; 106 started--;
… …
203 + req->result > 0 ? req->result : 0); 114 + req->result > 0 ? req->result : 0);
204 115
205 if (req->data) 116 if (req->data)
206 SvREFCNT_dec (req->data); 117 SvREFCNT_dec (req->data);
207 118
119 if (req->fh)
120 SvREFCNT_dec (req->fh);
121
208 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) 122 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
209 { 123 {
210 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 124 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
211 PL_laststatval = req->result; 125 PL_laststatval = req->result;
212 PL_statcache = *(req->statdata); 126 PL_statcache = *(req->statdata);
213 127
214 Safefree (req->statdata); 128 Safefree (req->statdata);
215 } 129 }
216 130
131 ENTER;
217 PUSHMARK (SP); 132 PUSHMARK (SP);
218 XPUSHs (sv_2mortal (newSViv (req->result))); 133 XPUSHs (sv_2mortal (newSViv (req->result)));
134
135 if (req->type == REQ_OPEN)
136 {
137 /* convert fd to fh */
138 SV *fh;
139
219 PUTBACK; 140 PUTBACK;
220 call_sv (req->callback, G_VOID); 141 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
221 SPAGAIN; 142 SPAGAIN;
143
144 fh = SvREFCNT_inc (POPs);
145
146 PUSHMARK (SP);
147 XPUSHs (sv_2mortal (fh));
148 }
149
150 if (SvOK (req->callback))
151 {
152 PUTBACK;
153 call_sv (req->callback, G_VOID | G_EVAL);
154 SPAGAIN;
155 }
156
157 LEAVE;
222 158
223 if (req->callback) 159 if (req->callback)
224 SvREFCNT_dec (req->callback); 160 SvREFCNT_dec (req->callback);
225 161
226 errno = errorno; 162 errno = errorno;
227 count++; 163 count++;
228 } 164 }
229 165
166 prv = req;
167 req = req->next;
230 Safefree (req); 168 Safefree (prv);
169
170 /* TODO: croak on errors? */
231 } 171 }
232 172
233 if (qs)
234 send_reqs ();
235
236 return count; 173 return count;
237} 174}
175
176static void *aio_proc(void *arg);
177
178static void
179start_thread (void)
180{
181 sigset_t fullsigset, oldsigset;
182 pthread_t tid;
183 pthread_attr_t attr;
184
185 pthread_attr_init (&attr);
186 pthread_attr_setstacksize (&attr, STACKSIZE);
187 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
188
189 sigfillset (&fullsigset);
190 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
191
192 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
193 started++;
194
195 sigprocmask (SIG_SETMASK, &oldsigset, 0);
196}
197
198static void
199send_req (aio_req req)
200{
201 nreqs++;
202
203 pthread_mutex_lock (&reqlock);
204
205 req->next = 0;
206
207 if (reqe)
208 {
209 reqe->next = req;
210 reqe = req;
211 }
212 else
213 reqe = reqs = req;
214
215 pthread_cond_signal (&reqwait);
216 pthread_mutex_unlock (&reqlock);
217
218 while (nreqs > max_outstanding)
219 {
220 poll_wait ();
221 poll_cb ();
222 }
223}
224
225static void
226end_thread (void)
227{
228 aio_req req;
229 New (0, req, 1, aio_cb);
230 req->type = REQ_QUIT;
231
232 send_req (req);
233}
234
235/* work around various missing functions */
236
237#if !HAVE_PREADWRITE
238# define pread aio_pread
239# define pwrite aio_pwrite
240
241/*
242 * make our pread/pwrite safe against themselves, but not against
243 * normal read/write by using a mutex. slows down execution a lot,
244 * but that's your problem, not mine.
245 */
246static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
247
248static ssize_t
249pread (int fd, void *buf, size_t count, off_t offset)
250{
251 ssize_t res;
252 off_t ooffset;
253
254 pthread_mutex_lock (&iolock);
255 ooffset = lseek (fd, 0, SEEK_CUR);
256 lseek (fd, offset, SEEK_SET);
257 res = read (fd, buf, count);
258 lseek (fd, ooffset, SEEK_SET);
259 pthread_mutex_unlock (&iolock);
260
261 return res;
262}
263
264static ssize_t
265pwrite (int fd, void *buf, size_t count, off_t offset)
266{
267 ssize_t res;
268 off_t ooffset;
269
270 pthread_mutex_lock (&iolock);
271 ooffset = lseek (fd, 0, SEEK_CUR);
272 lseek (fd, offset, SEEK_SET);
273 res = write (fd, buf, count);
274 lseek (fd, offset, SEEK_SET);
275 pthread_mutex_unlock (&iolock);
276
277 return res;
278}
279#endif
280
281#if !HAVE_FDATASYNC
282# define fdatasync fsync
283#endif
284
285#if !HAVE_READAHEAD
286# define readahead aio_readahead
287
288static char readahead_buf[4096];
289
290static ssize_t
291readahead (int fd, off_t offset, size_t count)
292{
293 while (count > 0)
294 {
295 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
296
297 pread (fd, readahead_buf, len, offset);
298 offset += len;
299 count -= len;
300 }
301
302 errno = 0;
303}
304#endif
238 305
239static void * 306static void *
240aio_proc (void *thr_arg) 307aio_proc (void *thr_arg)
241{ 308{
242 aio_req req; 309 aio_req req;
310 int type;
243 311
244 /* then loop */ 312 do
245 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
246 { 313 {
314 pthread_mutex_lock (&reqlock);
315
316 for (;;)
317 {
318 req = reqs;
319
320 if (reqs)
321 {
322 reqs = reqs->next;
323 if (!reqs) reqe = 0;
324 }
325
326 if (req)
327 break;
328
329 pthread_cond_wait (&reqwait, &reqlock);
330 }
331
332 pthread_mutex_unlock (&reqlock);
333
247 errno = 0; /* strictly unnecessary */ 334 errno = 0; /* strictly unnecessary */
248 335
336 type = req->type;
337
249 switch (req->type) 338 switch (type)
250 { 339 {
251 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; 340 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
252 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; 341 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
253#if SYS_readahead 342
254 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 343 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
255#else
256 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
257#endif
258 344
259 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 345 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
260 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 346 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
261 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 347 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
262 348
263 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 349 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
264 case REQ_CLOSE: req->result = close (req->fd); break; 350 case REQ_CLOSE: req->result = close (req->fd); break;
265 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 351 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
266 352
353 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
267 case REQ_FSYNC: req->result = fsync (req->fd); break; 354 case REQ_FSYNC: req->result = fsync (req->fd); break;
268 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
269 355
270 case REQ_QUIT: 356 case REQ_QUIT:
271 write (respipe[1], (void *)&req, sizeof (req)); 357 break;
272 return 0;
273 358
274 default: 359 default:
275 req->result = ENOSYS; 360 req->result = ENOSYS;
276 break; 361 break;
277 } 362 }
278 363
279 req->errorno = errno; 364 req->errorno = errno;
280 write (respipe[1], (void *)&req, sizeof (req)); 365
366 pthread_mutex_lock (&reslock);
367
368 req->next = 0;
369
370 if (rese)
371 {
372 rese->next = req;
373 rese = req;
374 }
375 else
376 {
377 rese = ress = req;
378
379 /* write a dummy byte to the pipe so fh becomes ready */
380 write (respipe [1], &respipe, 1);
381 }
382
383 pthread_mutex_unlock (&reslock);
281 } 384 }
385 while (type != REQ_QUIT);
282 386
283 return 0; 387 return 0;
284} 388}
285 389
286MODULE = IO::AIO PACKAGE = IO::AIO 390MODULE = IO::AIO PACKAGE = IO::AIO
287 391
392PROTOTYPES: ENABLE
393
288BOOT: 394BOOT:
289{ 395{
290 if (pipe (reqpipe) || pipe (respipe)) 396 if (pipe (respipe))
291 croak ("unable to initialize request or result pipe"); 397 croak ("unable to initialize result pipe");
292 398
293 if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) 399 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
294 croak ("cannot set result pipe to nonblocking mode"); 400 croak ("cannot set result pipe to nonblocking mode");
295 401
296 if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) 402 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
297 croak ("cannot set result pipe to nonblocking mode"); 403 croak ("cannot set result pipe to nonblocking mode");
298} 404}
299 405
300void 406void
301min_parallel(nthreads) 407min_parallel(nthreads)
… …
319 } 425 }
320 426
321 while (started > nthreads) 427 while (started > nthreads)
322 { 428 {
323 poll_wait (); 429 poll_wait ();
324 poll_cb (aTHX); 430 poll_cb ();
325 } 431 }
326} 432}
327 433
434int
435max_outstanding(nreqs)
436 int nreqs
437 PROTOTYPE: $
438 CODE:
439 RETVAL = max_outstanding;
440 max_outstanding = nreqs;
441
328void 442void
329aio_open(pathname,flags,mode,callback) 443aio_open(pathname,flags,mode,callback=&PL_sv_undef)
330 SV * pathname 444 SV * pathname
331 int flags 445 int flags
332 int mode 446 int mode
333 SV * callback 447 SV * callback
334 PROTOTYPE: $$$$ 448 PROTOTYPE: $$$;$
335 CODE: 449 CODE:
336{ 450{
337 aio_req req; 451 aio_req req;
338 452
339 Newz (0, req, 1, aio_cb); 453 Newz (0, req, 1, aio_cb);
… …
350 464
351 send_req (req); 465 send_req (req);
352} 466}
353 467
354void 468void
355aio_close(fh,callback) 469aio_close(fh,callback=&PL_sv_undef)
356 InputStream fh 470 SV * fh
357 SV * callback 471 SV * callback
358 PROTOTYPE: $$ 472 PROTOTYPE: $;$
359 ALIAS: 473 ALIAS:
360 aio_close = REQ_CLOSE 474 aio_close = REQ_CLOSE
361 aio_fsync = REQ_FSYNC 475 aio_fsync = REQ_FSYNC
362 aio_fdatasync = REQ_FDATASYNC 476 aio_fdatasync = REQ_FDATASYNC
363 CODE: 477 CODE:
… …
368 482
369 if (!req) 483 if (!req)
370 croak ("out of memory during aio_req allocation"); 484 croak ("out of memory during aio_req allocation");
371 485
372 req->type = ix; 486 req->type = ix;
487 req->fh = newSVsv (fh);
373 req->fd = PerlIO_fileno (fh); 488 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
374 req->callback = SvREFCNT_inc (callback); 489 req->callback = SvREFCNT_inc (callback);
375 490
376 send_req (req); 491 send_req (req);
377} 492}
378 493
379void 494void
380aio_read(fh,offset,length,data,dataoffset,callback) 495aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
381 InputStream fh 496 SV * fh
382 UV offset 497 UV offset
383 IV length 498 IV length
384 SV * data 499 SV * data
385 IV dataoffset 500 IV dataoffset
386 SV * callback 501 SV * callback
502 ALIAS:
503 aio_read = REQ_READ
504 aio_write = REQ_WRITE
387 PROTOTYPE: $$$$$$ 505 PROTOTYPE: $$$$$;$
388 CODE: 506 CODE:
389 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
390
391void
392aio_write(fh,offset,length,data,dataoffset,callback)
393 OutputStream fh
394 UV offset
395 IV length
396 SV * data
397 IV dataoffset
398 SV * callback
399 PROTOTYPE: $$$$$$
400 CODE:
401 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
402
403void
404aio_readahead(fh,offset,length,callback)
405 InputStream fh
406 UV offset
407 IV length
408 SV * callback
409 PROTOTYPE: $$$$
410 CODE:
411{ 507{
412 aio_req req; 508 aio_req req;
509 STRLEN svlen;
510 char *svptr = SvPV (data, svlen);
511
512 SvUPGRADE (data, SVt_PV);
513 SvPOK_on (data);
514
515 if (dataoffset < 0)
516 dataoffset += svlen;
517
518 if (dataoffset < 0 || dataoffset > svlen)
519 croak ("data offset outside of string");
520
521 if (ix == REQ_WRITE)
522 {
523 /* write: check length and adjust. */
524 if (length < 0 || length + dataoffset > svlen)
525 length = svlen - dataoffset;
526 }
527 else
528 {
529 /* read: grow scalar as necessary */
530 svptr = SvGROW (data, length + dataoffset);
531 }
413 532
414 if (length < 0) 533 if (length < 0)
415 croak ("length must not be negative"); 534 croak ("length must not be negative");
416 535
417 Newz (0, req, 1, aio_cb); 536 Newz (0, req, 1, aio_cb);
418 537
419 if (!req) 538 if (!req)
420 croak ("out of memory during aio_req allocation"); 539 croak ("out of memory during aio_req allocation");
421 540
541 req->type = ix;
542 req->fh = newSVsv (fh);
543 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
544 : IoOFP (sv_2io (fh)));
545 req->offset = offset;
546 req->length = length;
547 req->data = SvREFCNT_inc (data);
548 req->dataptr = (char *)svptr + dataoffset;
549 req->callback = SvREFCNT_inc (callback);
550
551 send_req (req);
552}
553
554void
555aio_readahead(fh,offset,length,callback=&PL_sv_undef)
556 SV * fh
557 UV offset
558 IV length
559 SV * callback
560 PROTOTYPE: $$$;$
561 CODE:
562{
563 aio_req req;
564
565 if (length < 0)
566 croak ("length must not be negative");
567
568 Newz (0, req, 1, aio_cb);
569
570 if (!req)
571 croak ("out of memory during aio_req allocation");
572
422 req->type = REQ_READAHEAD; 573 req->type = REQ_READAHEAD;
574 req->fh = newSVsv (fh);
423 req->fd = PerlIO_fileno (fh); 575 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
424 req->offset = offset; 576 req->offset = offset;
425 req->length = length; 577 req->length = length;
426 req->callback = SvREFCNT_inc (callback); 578 req->callback = SvREFCNT_inc (callback);
427 579
428 send_req (req); 580 send_req (req);
429} 581}
430 582
431void 583void
432aio_stat(fh_or_path,callback) 584aio_stat(fh_or_path,callback=&PL_sv_undef)
433 SV * fh_or_path 585 SV * fh_or_path
434 SV * callback 586 SV * callback
435 PROTOTYPE: $$
436 ALIAS: 587 ALIAS:
588 aio_stat = REQ_STAT
437 aio_lstat = 1 589 aio_lstat = REQ_LSTAT
438 CODE: 590 CODE:
439{ 591{
440 aio_req req; 592 aio_req req;
441 593
442 Newz (0, req, 1, aio_cb); 594 Newz (0, req, 1, aio_cb);
… …
449 if (!req->statdata) 601 if (!req->statdata)
450 croak ("out of memory during aio_req->statdata allocation"); 602 croak ("out of memory during aio_req->statdata allocation");
451 603
452 if (SvPOK (fh_or_path)) 604 if (SvPOK (fh_or_path))
453 { 605 {
454 req->type = ix ? REQ_LSTAT : REQ_STAT; 606 req->type = ix;
455 req->data = newSVsv (fh_or_path); 607 req->data = newSVsv (fh_or_path);
456 req->dataptr = SvPV_nolen (req->data); 608 req->dataptr = SvPV_nolen (req->data);
457 } 609 }
458 else 610 else
459 { 611 {
460 req->type = REQ_FSTAT; 612 req->type = REQ_FSTAT;
613 req->fh = newSVsv (fh_or_path);
461 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 614 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
462 } 615 }
463 616
464 req->callback = SvREFCNT_inc (callback); 617 req->callback = SvREFCNT_inc (callback);
465 618
466 send_req (req); 619 send_req (req);
467} 620}
468 621
469void 622void
470aio_unlink(pathname,callback) 623aio_unlink(pathname,callback=&PL_sv_undef)
471 SV * pathname 624 SV * pathname
472 SV * callback 625 SV * callback
473 PROTOTYPE: $$
474 CODE: 626 CODE:
475{ 627{
476 aio_req req; 628 aio_req req;
477 629
478 Newz (0, req, 1, aio_cb); 630 Newz (0, req, 1, aio_cb);
… …
486 req->callback = SvREFCNT_inc (callback); 638 req->callback = SvREFCNT_inc (callback);
487 639
488 send_req (req); 640 send_req (req);
489} 641}
490 642
643void
644flush()
645 PROTOTYPE:
646 CODE:
647 while (nreqs)
648 {
649 poll_wait ();
650 poll_cb ();
651 }
652
653void
654poll()
655 PROTOTYPE:
656 CODE:
657 if (nreqs)
658 {
659 poll_wait ();
660 poll_cb ();
661 }
662
491int 663int
492poll_fileno() 664poll_fileno()
493 PROTOTYPE: 665 PROTOTYPE:
494 CODE: 666 CODE:
495 RETVAL = respipe[0]; 667 RETVAL = respipe [0];
496 OUTPUT: 668 OUTPUT:
497 RETVAL 669 RETVAL
498 670
499int 671int
500poll_cb(...) 672poll_cb(...)
501 PROTOTYPE: 673 PROTOTYPE:
502 CODE: 674 CODE:
503 RETVAL = poll_cb (aTHX); 675 RETVAL = poll_cb ();
504 OUTPUT: 676 OUTPUT:
505 RETVAL 677 RETVAL
506 678
507void 679void
508poll_wait() 680poll_wait()
509 PROTOTYPE: 681 PROTOTYPE:
510 CODE: 682 CODE:
683 if (nreqs)
511 poll_wait (); 684 poll_wait ();
512 685
513int 686int
514nreqs() 687nreqs()
515 PROTOTYPE: 688 PROTOTYPE:
516 CODE: 689 CODE:

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