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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.6 by root, Mon Jul 11 01:03:17 2005 UTC vs.
Revision 1.28 by root, Wed Aug 17 05:06:59 2005 UTC

1#define _REENTRANT 1
2#include <errno.h>
3
1#include "EXTERN.h" 4#include "EXTERN.h"
2#include "perl.h" 5#include "perl.h"
3#include "XSUB.h" 6#include "XSUB.h"
4 7
8#include "autoconf/config.h"
9
5#include <sys/types.h> 10#include <sys/types.h>
6#include <sys/stat.h> 11#include <sys/stat.h>
12
7#include <unistd.h> 13#include <unistd.h>
8#include <fcntl.h> 14#include <fcntl.h>
9#include <signal.h> 15#include <signal.h>
10#include <sched.h> 16#include <sched.h>
11#include <endian.h>
12 17
13#include <pthread.h> 18#include <pthread.h>
14#include <sys/syscall.h>
15 19
16typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 20typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */
17typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 21typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
18typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 22typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
19 23
… …
25 29
26enum { 30enum {
27 REQ_QUIT, 31 REQ_QUIT,
28 REQ_OPEN, REQ_CLOSE, 32 REQ_OPEN, REQ_CLOSE,
29 REQ_READ, REQ_WRITE, REQ_READAHEAD, 33 REQ_READ, REQ_WRITE, REQ_READAHEAD,
30 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, 34 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
31 REQ_FSYNC, REQ_FDATASYNC, 35 REQ_FSYNC, REQ_FDATASYNC,
36 REQ_UNLINK, REQ_RMDIR,
37 REQ_SYMLINK,
32}; 38};
33 39
34typedef struct aio_cb { 40typedef struct aio_cb {
35 struct aio_cb *volatile next; 41 struct aio_cb *volatile next;
36 42
… …
40 off_t offset; 46 off_t offset;
41 size_t length; 47 size_t length;
42 ssize_t result; 48 ssize_t result;
43 mode_t mode; /* open */ 49 mode_t mode; /* open */
44 int errorno; 50 int errorno;
45 SV *data, *callback; 51 SV *data, *callback, *fh;
46 void *dataptr; 52 void *dataptr, *data2ptr;
47 STRLEN dataoffset; 53 STRLEN dataoffset;
48 54
49 Stat_t *statdata; 55 Stat_t *statdata;
50} aio_cb; 56} aio_cb;
51 57
52typedef aio_cb *aio_req; 58typedef aio_cb *aio_req;
53 59
54static int started; 60static int started;
55static int nreqs; 61static volatile int nreqs;
56static int max_outstanding = 1<<30; 62static int max_outstanding = 1<<30;
57static int respipe [2]; 63static int respipe [2];
58 64
59static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 65static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
60static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 66static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
61static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 67static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
62 68
63static volatile aio_req reqs, reqe; /* queue start, queue end */ 69static volatile aio_req reqs, reqe; /* queue start, queue end */
64static volatile aio_req ress, rese; /* queue start, queue end */ 70static volatile aio_req ress, rese; /* queue start, queue end */
65 71
72static void free_req (aio_req req)
73{
74 if (req->data)
75 SvREFCNT_dec (req->data);
76
77 if (req->fh)
78 SvREFCNT_dec (req->fh);
79
80 if (req->statdata)
81 Safefree (req->statdata);
82
83 if (req->callback)
84 SvREFCNT_dec (req->callback);
85
86 Safefree (req);
87}
88
66static void 89static void
67poll_wait () 90poll_wait ()
68{ 91{
69 if (!nreqs) 92 if (nreqs && !ress)
70 return; 93 {
71
72 fd_set rfd; 94 fd_set rfd;
73 FD_ZERO(&rfd); 95 FD_ZERO(&rfd);
74 FD_SET(respipe [0], &rfd); 96 FD_SET(respipe [0], &rfd);
75 97
76 select (respipe [0] + 1, &rfd, 0, 0, 0); 98 select (respipe [0] + 1, &rfd, 0, 0, 0);
99 }
77} 100}
78 101
79static int 102static int
80poll_cb () 103poll_cb ()
81{ 104{
82 dSP; 105 dSP;
83 int count = 0; 106 int count = 0;
107 int do_croak = 0;
84 aio_req req; 108 aio_req req;
85
86 {
87 /* read and signals sent by the worker threads */
88 char buf [32];
89 while (read (respipe [0], buf, 32) > 0)
90 ;
91 }
92 109
93 for (;;) 110 for (;;)
94 { 111 {
95 pthread_mutex_lock (&reslock); 112 pthread_mutex_lock (&reslock);
96
97 req = ress; 113 req = ress;
98 114
99 if (ress) 115 if (req)
100 { 116 {
101 ress = ress->next; 117 ress = req->next;
118
102 if (!ress) rese = 0; 119 if (!ress)
120 {
121 rese = 0;
122
123 /* read any signals sent by the worker threads */
124 char buf [32];
125 while (read (respipe [0], buf, 32) == 32)
126 ;
127 }
103 } 128 }
104 129
105 pthread_mutex_unlock (&reslock); 130 pthread_mutex_unlock (&reslock);
106 131
107 if (!req) 132 if (!req)
… …
115 { 140 {
116 int errorno = errno; 141 int errorno = errno;
117 errno = req->errorno; 142 errno = req->errorno;
118 143
119 if (req->type == REQ_READ) 144 if (req->type == REQ_READ)
120 SvCUR_set (req->data, req->dataoffset 145 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
121 + req->result > 0 ? req->result : 0);
122 146
147 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
148 SvREADONLY_off (req->data);
149
123 if (req->data) 150 if (req->statdata)
124 SvREFCNT_dec (req->data);
125
126 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
127 { 151 {
128 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 152 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
129 PL_laststatval = req->result; 153 PL_laststatval = req->result;
130 PL_statcache = *(req->statdata); 154 PL_statcache = *(req->statdata);
131
132 Safefree (req->statdata);
133 } 155 }
134 156
157 ENTER;
135 PUSHMARK (SP); 158 PUSHMARK (SP);
136 XPUSHs (sv_2mortal (newSViv (req->result))); 159 XPUSHs (sv_2mortal (newSViv (req->result)));
137 160
138 if (req->type == REQ_OPEN) 161 if (req->type == REQ_OPEN)
139 { 162 {
… …
142 165
143 PUTBACK; 166 PUTBACK;
144 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 167 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
145 SPAGAIN; 168 SPAGAIN;
146 169
147 fh = POPs; 170 fh = SvREFCNT_inc (POPs);
148 171
149 PUSHMARK (SP); 172 PUSHMARK (SP);
150 XPUSHs (fh); 173 XPUSHs (sv_2mortal (fh));
151 } 174 }
152 175
176 if (SvOK (req->callback))
177 {
153 PUTBACK; 178 PUTBACK;
154 call_sv (req->callback, G_VOID | G_EVAL); 179 call_sv (req->callback, G_VOID | G_EVAL);
155 SPAGAIN; 180 SPAGAIN;
181
182 if (SvTRUE (ERRSV))
183 {
184 free_req (req);
185 croak (0);
186 }
156 187 }
157 if (req->callback) 188
158 SvREFCNT_dec (req->callback); 189 LEAVE;
159 190
160 errno = errorno; 191 errno = errorno;
161 count++; 192 count++;
162 } 193 }
163 194
164 Safefree (req); 195 free_req (req);
165 } 196 }
166 197
167 return count; 198 return count;
168} 199}
169 200
… …
207 reqe = reqs = req; 238 reqe = reqs = req;
208 239
209 pthread_cond_signal (&reqwait); 240 pthread_cond_signal (&reqwait);
210 pthread_mutex_unlock (&reqlock); 241 pthread_mutex_unlock (&reqlock);
211 242
212 while (nreqs > max_outstanding) 243 if (nreqs > max_outstanding)
244 for (;;)
245 {
246 poll_cb ();
247
248 if (nreqs <= max_outstanding)
249 break;
250
251 poll_wait ();
252 }
253}
254
255static void
256end_thread (void)
257{
258 aio_req req;
259 Newz (0, req, 1, aio_cb);
260 req->type = REQ_QUIT;
261
262 send_req (req);
263}
264
265static void min_parallel (int nthreads)
266{
267 while (nthreads > started)
268 start_thread ();
269}
270
271static void max_parallel (int nthreads)
272{
273 int cur = started;
274
275 while (cur > nthreads)
276 {
277 end_thread ();
278 cur--;
279 }
280
281 while (started > nthreads)
213 { 282 {
214 poll_wait (); 283 poll_wait ();
215 poll_cb (); 284 poll_cb ();
216 } 285 }
217} 286}
218 287
219static void 288static void create_pipe ()
220end_thread (void)
221{ 289{
290 if (pipe (respipe))
291 croak ("unable to initialize result pipe");
292
293 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
294 croak ("cannot set result pipe to nonblocking mode");
295
296 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
297 croak ("cannot set result pipe to nonblocking mode");
298}
299
300static void atfork_prepare (void)
301{
302 pthread_mutex_lock (&reqlock);
303 pthread_mutex_lock (&reslock);
304}
305
306static void atfork_parent (void)
307{
308 pthread_mutex_unlock (&reslock);
309 pthread_mutex_unlock (&reqlock);
310}
311
312static void atfork_child (void)
313{
222 aio_req req; 314 aio_req prv;
223 New (0, req, 1, aio_cb);
224 req->type = REQ_QUIT;
225 315
226 send_req (req); 316 int restart = started;
227} 317 started = 0;
228 318
229static void 319 while (reqs)
230read_write (int dowrite, int fd, off_t offset, size_t length,
231 SV *data, STRLEN dataoffset, SV *callback)
232{
233 aio_req req;
234 STRLEN svlen;
235 char *svptr = SvPV (data, svlen);
236
237 SvUPGRADE (data, SVt_PV);
238 SvPOK_on (data);
239
240 if (dataoffset < 0)
241 dataoffset += svlen;
242
243 if (dataoffset < 0 || dataoffset > svlen)
244 croak ("data offset outside of string");
245
246 if (dowrite)
247 { 320 {
248 /* write: check length and adjust. */ 321 prv = reqs;
249 if (length < 0 || length + dataoffset > svlen) 322 reqs = prv->next;
250 length = svlen - dataoffset; 323 free_req (prv);
251 } 324 }
252 else 325
326 reqs = reqe = 0;
327
328 while (ress)
253 { 329 {
254 /* read: grow scalar as necessary */ 330 prv = ress;
255 svptr = SvGROW (data, length + dataoffset); 331 ress = prv->next;
332 free_req (prv);
333 }
334
335 ress = rese = 0;
336
337 atfork_parent ();
338
339 min_parallel (restart);
340}
341
342/*****************************************************************************/
343/* work around various missing functions */
344
345#if !HAVE_PREADWRITE
346# define pread aio_pread
347# define pwrite aio_pwrite
348
349/*
350 * make our pread/pwrite safe against themselves, but not against
351 * normal read/write by using a mutex. slows down execution a lot,
352 * but that's your problem, not mine.
353 */
354static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
355
356static ssize_t
357pread (int fd, void *buf, size_t count, off_t offset)
358{
359 ssize_t res;
360 off_t ooffset;
361
362 pthread_mutex_lock (&iolock);
363 ooffset = lseek (fd, 0, SEEK_CUR);
364 lseek (fd, offset, SEEK_SET);
365 res = read (fd, buf, count);
366 lseek (fd, ooffset, SEEK_SET);
367 pthread_mutex_unlock (&iolock);
368
369 return res;
370}
371
372static ssize_t
373pwrite (int fd, void *buf, size_t count, off_t offset)
374{
375 ssize_t res;
376 off_t ooffset;
377
378 pthread_mutex_lock (&iolock);
379 ooffset = lseek (fd, 0, SEEK_CUR);
380 lseek (fd, offset, SEEK_SET);
381 res = write (fd, buf, count);
382 lseek (fd, offset, SEEK_SET);
383 pthread_mutex_unlock (&iolock);
384
385 return res;
386}
387#endif
388
389#if !HAVE_FDATASYNC
390# define fdatasync fsync
391#endif
392
393#if !HAVE_READAHEAD
394# define readahead aio_readahead
395
396static char readahead_buf[4096];
397
398static ssize_t
399readahead (int fd, off_t offset, size_t count)
400{
401 while (count > 0)
256 } 402 {
403 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
257 404
258 if (length < 0) 405 pread (fd, readahead_buf, len, offset);
259 croak ("length must not be negative"); 406 offset += len;
407 count -= len;
408 }
260 409
261 Newz (0, req, 1, aio_cb); 410 errno = 0;
262
263 if (!req)
264 croak ("out of memory during aio_req allocation");
265
266 req->type = dowrite ? REQ_WRITE : REQ_READ;
267 req->fd = fd;
268 req->offset = offset;
269 req->length = length;
270 req->data = SvREFCNT_inc (data);
271 req->dataptr = (char *)svptr + dataoffset;
272 req->callback = SvREFCNT_inc (callback);
273
274 send_req (req);
275} 411}
412#endif
413
414/*****************************************************************************/
276 415
277static void * 416static void *
278aio_proc (void *thr_arg) 417aio_proc (void *thr_arg)
279{ 418{
280 aio_req req; 419 aio_req req;
… …
306 445
307 type = req->type; 446 type = req->type;
308 447
309 switch (type) 448 switch (type)
310 { 449 {
311 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; 450 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
312 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; 451 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
313#if SYS_readahead 452
314 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 453 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
315#else
316 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
317#endif
318 454
319 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 455 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
320 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 456 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
321 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 457 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
322 458
323 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 459 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
324 case REQ_CLOSE: req->result = close (req->fd); break; 460 case REQ_CLOSE: req->result = close (req->fd); break;
325 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 461 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
462 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
463 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
326 464
465 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
327 case REQ_FSYNC: req->result = fsync (req->fd); break; 466 case REQ_FSYNC: req->result = fsync (req->fd); break;
328 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
329 467
330 case REQ_QUIT: 468 case REQ_QUIT:
331 break; 469 break;
332 470
333 default: 471 default:
… …
359 while (type != REQ_QUIT); 497 while (type != REQ_QUIT);
360 498
361 return 0; 499 return 0;
362} 500}
363 501
502#define dREQ \
503 aio_req req; \
504 \
505 if (SvOK (callback) && !SvROK (callback)) \
506 croak ("clalback must be undef or of reference type"); \
507 \
508 Newz (0, req, 1, aio_cb); \
509 if (!req) \
510 croak ("out of memory during aio_req allocation"); \
511 \
512 req->callback = newSVsv (callback);
513
364MODULE = IO::AIO PACKAGE = IO::AIO 514MODULE = IO::AIO PACKAGE = IO::AIO
365 515
516PROTOTYPES: ENABLE
517
366BOOT: 518BOOT:
367{ 519{
368 if (pipe (respipe)) 520 create_pipe ();
369 croak ("unable to initialize result pipe"); 521 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
370
371 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
372 croak ("cannot set result pipe to nonblocking mode");
373
374 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
375 croak ("cannot set result pipe to nonblocking mode");
376} 522}
377 523
378void 524void
379min_parallel(nthreads) 525min_parallel(nthreads)
380 int nthreads 526 int nthreads
381 PROTOTYPE: $ 527 PROTOTYPE: $
382 CODE:
383 while (nthreads > started)
384 start_thread ();
385 528
386void 529void
387max_parallel(nthreads) 530max_parallel(nthreads)
388 int nthreads 531 int nthreads
389 PROTOTYPE: $ 532 PROTOTYPE: $
390 CODE:
391{
392 int cur = started;
393 while (cur > nthreads)
394 {
395 end_thread ();
396 cur--;
397 }
398
399 while (started > nthreads)
400 {
401 poll_wait ();
402 poll_cb ();
403 }
404}
405 533
406int 534int
407max_outstanding(nreqs) 535max_outstanding(nreqs)
408 int nreqs 536 int nreqs
409 PROTOTYPE: $ 537 PROTOTYPE: $
410 CODE: 538 CODE:
411 RETVAL = max_outstanding; 539 RETVAL = max_outstanding;
412 max_outstanding = nreqs; 540 max_outstanding = nreqs;
413 541
414void 542void
415aio_open(pathname,flags,mode,callback) 543aio_open(pathname,flags,mode,callback=&PL_sv_undef)
416 SV * pathname 544 SV * pathname
417 int flags 545 int flags
418 int mode 546 int mode
419 SV * callback 547 SV * callback
420 PROTOTYPE: $$$$ 548 PROTOTYPE: $$$;$
421 CODE: 549 CODE:
422{ 550{
423 aio_req req; 551 dREQ;
424
425 Newz (0, req, 1, aio_cb);
426
427 if (!req)
428 croak ("out of memory during aio_req allocation");
429 552
430 req->type = REQ_OPEN; 553 req->type = REQ_OPEN;
431 req->data = newSVsv (pathname); 554 req->data = newSVsv (pathname);
432 req->dataptr = SvPV_nolen (req->data); 555 req->dataptr = SvPVbyte_nolen (req->data);
433 req->fd = flags; 556 req->fd = flags;
434 req->mode = mode; 557 req->mode = mode;
435 req->callback = SvREFCNT_inc (callback);
436 558
437 send_req (req); 559 send_req (req);
438} 560}
439 561
440void 562void
441aio_close(fh,callback) 563aio_close(fh,callback=&PL_sv_undef)
442 InputStream fh 564 SV * fh
443 SV * callback 565 SV * callback
444 PROTOTYPE: $$ 566 PROTOTYPE: $;$
445 ALIAS: 567 ALIAS:
446 aio_close = REQ_CLOSE 568 aio_close = REQ_CLOSE
447 aio_fsync = REQ_FSYNC 569 aio_fsync = REQ_FSYNC
448 aio_fdatasync = REQ_FDATASYNC 570 aio_fdatasync = REQ_FDATASYNC
449 CODE: 571 CODE:
450{ 572{
573 dREQ;
574
575 req->type = ix;
576 req->fh = newSVsv (fh);
577 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
578
579 send_req (req);
580}
581
582void
583aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
584 SV * fh
585 UV offset
586 IV length
587 SV * data
588 IV dataoffset
589 SV * callback
590 ALIAS:
591 aio_read = REQ_READ
592 aio_write = REQ_WRITE
593 PROTOTYPE: $$$$$;$
594 CODE:
595{
451 aio_req req; 596 aio_req req;
597 STRLEN svlen;
598 char *svptr = SvPVbyte (data, svlen);
452 599
453 Newz (0, req, 1, aio_cb); 600 SvUPGRADE (data, SVt_PV);
601 SvPOK_on (data);
454 602
455 if (!req) 603 if (dataoffset < 0)
456 croak ("out of memory during aio_req allocation"); 604 dataoffset += svlen;
457 605
458 req->type = ix; 606 if (dataoffset < 0 || dataoffset > svlen)
459 req->fd = PerlIO_fileno (fh); 607 croak ("data offset outside of string");
460 req->callback = SvREFCNT_inc (callback);
461 608
462 send_req (req); 609 if (ix == REQ_WRITE)
463} 610 {
464 611 /* write: check length and adjust. */
465void 612 if (length < 0 || length + dataoffset > svlen)
466aio_read(fh,offset,length,data,dataoffset,callback) 613 length = svlen - dataoffset;
467 InputStream fh 614 }
468 UV offset 615 else
469 IV length 616 {
470 SV * data 617 /* read: grow scalar as necessary */
471 IV dataoffset 618 svptr = SvGROW (data, length + dataoffset);
472 SV * callback 619 }
473 PROTOTYPE: $$$$$$
474 CODE:
475 read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
476
477void
478aio_write(fh,offset,length,data,dataoffset,callback)
479 OutputStream fh
480 UV offset
481 IV length
482 SV * data
483 IV dataoffset
484 SV * callback
485 PROTOTYPE: $$$$$$
486 CODE:
487 read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
488
489void
490aio_readahead(fh,offset,length,callback)
491 InputStream fh
492 UV offset
493 IV length
494 SV * callback
495 PROTOTYPE: $$$$
496 CODE:
497{
498 aio_req req;
499 620
500 if (length < 0) 621 if (length < 0)
501 croak ("length must not be negative"); 622 croak ("length must not be negative");
502 623
503 Newz (0, req, 1, aio_cb); 624 {
625 dREQ;
504 626
505 if (!req) 627 req->type = ix;
506 croak ("out of memory during aio_req allocation"); 628 req->fh = newSVsv (fh);
629 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
630 : IoOFP (sv_2io (fh)));
631 req->offset = offset;
632 req->length = length;
633 req->data = SvREFCNT_inc (data);
634 req->dataptr = (char *)svptr + dataoffset;
635
636 if (!SvREADONLY (data))
637 {
638 SvREADONLY_on (data);
639 req->data2ptr = (void *)data;
640 }
641
642 send_req (req);
643 }
644}
645
646void
647aio_readahead(fh,offset,length,callback=&PL_sv_undef)
648 SV * fh
649 UV offset
650 IV length
651 SV * callback
652 PROTOTYPE: $$$;$
653 CODE:
654{
655 dREQ;
507 656
508 req->type = REQ_READAHEAD; 657 req->type = REQ_READAHEAD;
658 req->fh = newSVsv (fh);
509 req->fd = PerlIO_fileno (fh); 659 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
510 req->offset = offset; 660 req->offset = offset;
511 req->length = length; 661 req->length = length;
512 req->callback = SvREFCNT_inc (callback);
513 662
514 send_req (req); 663 send_req (req);
515} 664}
516 665
517void 666void
518aio_stat(fh_or_path,callback) 667aio_stat(fh_or_path,callback=&PL_sv_undef)
519 SV * fh_or_path 668 SV * fh_or_path
520 SV * callback 669 SV * callback
521 PROTOTYPE: $$
522 ALIAS: 670 ALIAS:
671 aio_stat = REQ_STAT
523 aio_lstat = 1 672 aio_lstat = REQ_LSTAT
524 CODE: 673 CODE:
525{ 674{
526 aio_req req; 675 dREQ;
527
528 Newz (0, req, 1, aio_cb);
529
530 if (!req)
531 croak ("out of memory during aio_req allocation");
532 676
533 New (0, req->statdata, 1, Stat_t); 677 New (0, req->statdata, 1, Stat_t);
534
535 if (!req->statdata) 678 if (!req->statdata)
679 {
680 free_req (req);
536 croak ("out of memory during aio_req->statdata allocation"); 681 croak ("out of memory during aio_req->statdata allocation");
682 }
537 683
538 if (SvPOK (fh_or_path)) 684 if (SvPOK (fh_or_path))
539 { 685 {
540 req->type = ix ? REQ_LSTAT : REQ_STAT; 686 req->type = ix;
541 req->data = newSVsv (fh_or_path); 687 req->data = newSVsv (fh_or_path);
542 req->dataptr = SvPV_nolen (req->data); 688 req->dataptr = SvPVbyte_nolen (req->data);
543 } 689 }
544 else 690 else
545 { 691 {
546 req->type = REQ_FSTAT; 692 req->type = REQ_FSTAT;
693 req->fh = newSVsv (fh_or_path);
547 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 694 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
548 } 695 }
549 696
550 req->callback = SvREFCNT_inc (callback);
551
552 send_req (req); 697 send_req (req);
553} 698}
554 699
555void 700void
556aio_unlink(pathname,callback) 701aio_unlink(pathname,callback=&PL_sv_undef)
557 SV * pathname 702 SV * pathname
558 SV * callback 703 SV * callback
559 PROTOTYPE: $$ 704 ALIAS:
705 aio_unlink = REQ_UNLINK
706 aio_rmdir = REQ_RMDIR
560 CODE: 707 CODE:
561{ 708{
562 aio_req req; 709 dREQ;
563 710
564 Newz (0, req, 1, aio_cb); 711 req->type = ix;
712 req->data = newSVsv (pathname);
713 req->dataptr = SvPVbyte_nolen (req->data);
565 714
566 if (!req) 715 send_req (req);
567 croak ("out of memory during aio_req allocation"); 716}
717
718void
719aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
720 SV * oldpath
721 SV * newpath
722 SV * callback
723 CODE:
724{
725 dREQ;
568 726
569 req->type = REQ_UNLINK; 727 req->type = REQ_SYMLINK;
728 req->fh = newSVsv (oldpath);
729 req->data2ptr = SvPVbyte_nolen (req->fh);
570 req->data = newSVsv (pathname); 730 req->data = newSVsv (newpath);
571 req->dataptr = SvPV_nolen (req->data); 731 req->dataptr = SvPVbyte_nolen (req->data);
572 req->callback = SvREFCNT_inc (callback);
573 732
574 send_req (req); 733 send_req (req);
575} 734}
576 735
577void 736void
… …
582 { 741 {
583 poll_wait (); 742 poll_wait ();
584 poll_cb (); 743 poll_cb ();
585 } 744 }
586 745
746void
747poll()
748 PROTOTYPE:
749 CODE:
750 if (nreqs)
751 {
752 poll_wait ();
753 poll_cb ();
754 }
755
587int 756int
588poll_fileno() 757poll_fileno()
589 PROTOTYPE: 758 PROTOTYPE:
590 CODE: 759 CODE:
591 RETVAL = respipe [0]; 760 RETVAL = respipe [0];

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