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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.4 by root, Sun Jul 10 20:57:00 2005 UTC vs.
Revision 1.22 by root, Tue Aug 16 22:22:18 2005 UTC

1#define PERL_NO_GET_CONTEXT 1#define _REENTRANT 1
2#include <errno.h>
2 3
3#include "EXTERN.h" 4#include "EXTERN.h"
4#include "perl.h" 5#include "perl.h"
5#include "XSUB.h" 6#include "XSUB.h"
6 7
8#include "autoconf/config.h"
9
7#include <sys/types.h> 10#include <sys/types.h>
8#include <sys/stat.h> 11#include <sys/stat.h>
12
9#include <unistd.h> 13#include <unistd.h>
10#include <fcntl.h> 14#include <fcntl.h>
11#include <signal.h> 15#include <signal.h>
12#include <sched.h> 16#include <sched.h>
13#include <endian.h>
14 17
15#include <pthread.h> 18#include <pthread.h>
16#include <sys/syscall.h>
17 19
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 20typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 21typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 22typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
21 23
… …
27 29
28enum { 30enum {
29 REQ_QUIT, 31 REQ_QUIT,
30 REQ_OPEN, REQ_CLOSE, 32 REQ_OPEN, REQ_CLOSE,
31 REQ_READ, REQ_WRITE, REQ_READAHEAD, 33 REQ_READ, REQ_WRITE, REQ_READAHEAD,
32 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, 34 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
33 REQ_FSYNC, REQ_FDATASYNC, 35 REQ_FSYNC, REQ_FDATASYNC,
36 REQ_UNLINK, REQ_RMDIR, REQ_SYMLINK,
37 REQ_SYMLINK,
34}; 38};
35 39
36typedef struct aio_cb { 40typedef struct aio_cb {
37 struct aio_cb *volatile next; 41 struct aio_cb *volatile next;
38 42
… …
42 off_t offset; 46 off_t offset;
43 size_t length; 47 size_t length;
44 ssize_t result; 48 ssize_t result;
45 mode_t mode; /* open */ 49 mode_t mode; /* open */
46 int errorno; 50 int errorno;
47 SV *data, *callback; 51 SV *data, *callback, *fh;
48 void *dataptr; 52 void *dataptr, *data2ptr;
49 STRLEN dataoffset; 53 STRLEN dataoffset;
50 54
51 Stat_t *statdata; 55 Stat_t *statdata;
52} aio_cb; 56} aio_cb;
53 57
54typedef aio_cb *aio_req; 58typedef aio_cb *aio_req;
55 59
56static int started; 60static int started;
57static int nreqs; 61static volatile int nreqs;
58static int max_outstanding = 1<<30; 62static int max_outstanding = 1<<30;
59static int respipe [2]; 63static int respipe [2];
60 64
61static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 65static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
62static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 66static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
67static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER;
63static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 68static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
64 69
65static volatile aio_req reqs, reqe; /* queue start, queue end */ 70static volatile aio_req reqs, reqe; /* queue start, queue end */
66static volatile aio_req ress, rese; /* queue start, queue end */ 71static volatile aio_req ress, rese; /* queue start, queue end */
67 72
68static void 73static void
69poll_wait () 74poll_wait ()
70{ 75{
71 if (!nreqs) 76 if (nreqs && !ress)
72 return; 77 {
73
74 fd_set rfd; 78 fd_set rfd;
75 FD_ZERO(&rfd); 79 FD_ZERO(&rfd);
76 FD_SET(respipe [0], &rfd); 80 FD_SET(respipe [0], &rfd);
77 81
78 select (respipe [0] + 1, &rfd, 0, 0, 0); 82 select (respipe [0] + 1, &rfd, 0, 0, 0);
83 }
79} 84}
80 85
81static int 86static int
82poll_cb (pTHX) 87poll_cb ()
83{ 88{
84 dSP; 89 dSP;
85 int count = 0; 90 int count = 0;
86 aio_req req; 91 aio_req req, prv;
87 92
93 pthread_mutex_lock (&reslock);
94
88 { 95 {
89 /* read and signals sent by the worker threads */ 96 /* read any signals sent by the worker threads */
90 char buf [32]; 97 char buf [32];
91 while (read (respipe [0], buf, 32) > 0) 98 while (read (respipe [0], buf, 32) == 32)
92 ; 99 ;
93 } 100 }
94 101
95 for (;;) 102 req = ress;
103 ress = rese = 0;
104
105 pthread_mutex_unlock (&reslock);
106
107 while (req)
96 { 108 {
97 pthread_mutex_lock (&reslock);
98
99 req = ress;
100
101 if (ress)
102 {
103 ress = ress->next;
104 if (!ress) rese = 0;
105 }
106
107 pthread_mutex_unlock (&reslock);
108
109 if (!req)
110 break;
111
112 nreqs--; 109 nreqs--;
113 110
114 if (req->type == REQ_QUIT) 111 if (req->type == REQ_QUIT)
115 started--; 112 started--;
116 else 113 else
… …
123 + req->result > 0 ? req->result : 0); 120 + req->result > 0 ? req->result : 0);
124 121
125 if (req->data) 122 if (req->data)
126 SvREFCNT_dec (req->data); 123 SvREFCNT_dec (req->data);
127 124
125 if (req->fh)
126 SvREFCNT_dec (req->fh);
127
128 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) 128 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
129 { 129 {
130 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 130 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
131 PL_laststatval = req->result; 131 PL_laststatval = req->result;
132 PL_statcache = *(req->statdata); 132 PL_statcache = *(req->statdata);
133 133
134 Safefree (req->statdata); 134 Safefree (req->statdata);
135 } 135 }
136 136
137 ENTER;
137 PUSHMARK (SP); 138 PUSHMARK (SP);
138 XPUSHs (sv_2mortal (newSViv (req->result))); 139 XPUSHs (sv_2mortal (newSViv (req->result)));
139 140
140 if (req->type == REQ_OPEN) 141 if (req->type == REQ_OPEN)
141 { 142 {
… …
144 145
145 PUTBACK; 146 PUTBACK;
146 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 147 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
147 SPAGAIN; 148 SPAGAIN;
148 149
149 fh = POPs; 150 fh = SvREFCNT_inc (POPs);
150 151
151 PUSHMARK (SP); 152 PUSHMARK (SP);
152 XPUSHs (fh); 153 XPUSHs (sv_2mortal (fh));
153 } 154 }
154 155
156 if (SvOK (req->callback))
157 {
155 PUTBACK; 158 PUTBACK;
156 call_sv (req->callback, G_VOID | G_EVAL); 159 call_sv (req->callback, G_VOID | G_EVAL);
157 SPAGAIN; 160 SPAGAIN;
161 }
162
163 LEAVE;
158 164
159 if (req->callback) 165 if (req->callback)
160 SvREFCNT_dec (req->callback); 166 SvREFCNT_dec (req->callback);
161 167
162 errno = errorno; 168 errno = errorno;
163 count++; 169 count++;
164 } 170 }
165 171
172 prv = req;
173 req = req->next;
166 Safefree (req); 174 Safefree (prv);
175
176 /* TODO: croak on errors? */
167 } 177 }
168 178
169 return count; 179 return count;
170} 180}
171 181
… …
226 req->type = REQ_QUIT; 236 req->type = REQ_QUIT;
227 237
228 send_req (req); 238 send_req (req);
229} 239}
230 240
231static void
232read_write (pTHX_
233 int dowrite, int fd, off_t offset, size_t length,
234 SV *data, STRLEN dataoffset, SV *callback)
235{
236 aio_req req;
237 STRLEN svlen;
238 char *svptr = SvPV (data, svlen);
239 241
240 SvUPGRADE (data, SVt_PV); 242static void min_parallel (int nthreads)
241 SvPOK_on (data); 243{
244 while (nthreads > started)
245 start_thread ();
246}
242 247
243 if (dataoffset < 0) 248static void max_parallel (int nthreads)
244 dataoffset += svlen; 249{
250 int cur = started;
251 while (cur > nthreads)
252 {
253 end_thread ();
254 cur--;
255 }
245 256
246 if (dataoffset < 0 || dataoffset > svlen) 257 while (started > nthreads)
247 croak ("data offset outside of string");
248
249 if (dowrite)
250 { 258 {
251 /* write: check length and adjust. */ 259 poll_wait ();
252 if (length < 0 || length + dataoffset > svlen) 260 poll_cb ();
253 length = svlen - dataoffset;
254 } 261 }
255 else 262}
263
264static int fork_started;
265
266static void atfork_prepare (void)
267{
268 pthread_mutex_lock (&frklock);
269
270 fork_started = started;
271
272 for (;;) {
273 while (nreqs)
274 {
275 poll_wait ();
276 poll_cb ();
277 }
278
279 max_parallel (0);
280
281 pthread_mutex_lock (&reqlock);
282
283 if (!nreqs && !started)
284 break;
285
286 pthread_mutex_unlock (&reqlock);
287
288 min_parallel (fork_started);
289 }
290
291 pthread_mutex_lock (&reslock);
292
293 assert (!started);
294 assert (!nreqs);
295 assert (!reqs && !reqe);
296 assert (!ress && !rese);
297}
298
299static void atfork_parent (void)
300{
301 pthread_mutex_unlock (&reslock);
302 min_parallel (fork_started);
303 pthread_mutex_unlock (&reqlock);
304 pthread_mutex_unlock (&frklock);
305}
306
307static void atfork_child (void)
308{
309 reqs = reqe = 0;
310
311 atfork_parent ();
312}
313
314/*****************************************************************************/
315/* work around various missing functions */
316
317#if !HAVE_PREADWRITE
318# define pread aio_pread
319# define pwrite aio_pwrite
320
321/*
322 * make our pread/pwrite safe against themselves, but not against
323 * normal read/write by using a mutex. slows down execution a lot,
324 * but that's your problem, not mine.
325 */
326static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
327
328static ssize_t
329pread (int fd, void *buf, size_t count, off_t offset)
330{
331 ssize_t res;
332 off_t ooffset;
333
334 pthread_mutex_lock (&iolock);
335 ooffset = lseek (fd, 0, SEEK_CUR);
336 lseek (fd, offset, SEEK_SET);
337 res = read (fd, buf, count);
338 lseek (fd, ooffset, SEEK_SET);
339 pthread_mutex_unlock (&iolock);
340
341 return res;
342}
343
344static ssize_t
345pwrite (int fd, void *buf, size_t count, off_t offset)
346{
347 ssize_t res;
348 off_t ooffset;
349
350 pthread_mutex_lock (&iolock);
351 ooffset = lseek (fd, 0, SEEK_CUR);
352 lseek (fd, offset, SEEK_SET);
353 res = write (fd, buf, count);
354 lseek (fd, offset, SEEK_SET);
355 pthread_mutex_unlock (&iolock);
356
357 return res;
358}
359#endif
360
361#if !HAVE_FDATASYNC
362# define fdatasync fsync
363#endif
364
365#if !HAVE_READAHEAD
366# define readahead aio_readahead
367
368static char readahead_buf[4096];
369
370static ssize_t
371readahead (int fd, off_t offset, size_t count)
372{
373 while (count > 0)
256 { 374 {
257 /* read: grow scalar as necessary */ 375 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
258 svptr = SvGROW (data, length + dataoffset); 376
377 pread (fd, readahead_buf, len, offset);
378 offset += len;
379 count -= len;
259 } 380 }
260 381
261 if (length < 0) 382 errno = 0;
262 croak ("length must not be negative");
263
264 Newz (0, req, 1, aio_cb);
265
266 if (!req)
267 croak ("out of memory during aio_req allocation");
268
269 req->type = dowrite ? REQ_WRITE : REQ_READ;
270 req->fd = fd;
271 req->offset = offset;
272 req->length = length;
273 req->data = SvREFCNT_inc (data);
274 req->dataptr = (char *)svptr + dataoffset;
275 req->callback = SvREFCNT_inc (callback);
276
277 send_req (req);
278} 383}
384#endif
385
386/*****************************************************************************/
279 387
280static void * 388static void *
281aio_proc (void *thr_arg) 389aio_proc (void *thr_arg)
282{ 390{
283 aio_req req; 391 aio_req req;
… …
309 417
310 type = req->type; 418 type = req->type;
311 419
312 switch (type) 420 switch (type)
313 { 421 {
314 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; 422 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
315 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; 423 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
316#if SYS_readahead 424
317 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 425 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
318#else
319 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
320#endif
321 426
322 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 427 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
323 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 428 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 429 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325 430
326 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 431 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
327 case REQ_CLOSE: req->result = close (req->fd); break; 432 case REQ_CLOSE: req->result = close (req->fd); break;
328 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 433 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
434 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
435 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
329 436
437 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
330 case REQ_FSYNC: req->result = fsync (req->fd); break; 438 case REQ_FSYNC: req->result = fsync (req->fd); break;
331 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332 439
333 case REQ_QUIT: 440 case REQ_QUIT:
334 break; 441 break;
335 442
336 default: 443 default:
… …
362 while (type != REQ_QUIT); 469 while (type != REQ_QUIT);
363 470
364 return 0; 471 return 0;
365} 472}
366 473
474#define dREQ \
475 aio_req req; \
476 \
477 if (SvOK (callback) && !SvROK (callback)) \
478 croak ("clalback must be undef or of reference type"); \
479 \
480 Newz (0, req, 1, aio_cb); \
481 if (!req) \
482 croak ("out of memory during aio_req allocation"); \
483 \
484 req->callback = SvREFCNT_inc (callback);
485
367MODULE = IO::AIO PACKAGE = IO::AIO 486MODULE = IO::AIO PACKAGE = IO::AIO
487
488PROTOTYPES: ENABLE
368 489
369BOOT: 490BOOT:
370{ 491{
371 if (pipe (respipe)) 492 if (pipe (respipe))
372 croak ("unable to initialize result pipe"); 493 croak ("unable to initialize result pipe");
… …
374 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 495 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
375 croak ("cannot set result pipe to nonblocking mode"); 496 croak ("cannot set result pipe to nonblocking mode");
376 497
377 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 498 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
378 croak ("cannot set result pipe to nonblocking mode"); 499 croak ("cannot set result pipe to nonblocking mode");
500
501 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
379} 502}
380 503
381void 504void
382min_parallel(nthreads) 505min_parallel(nthreads)
383 int nthreads 506 int nthreads
384 PROTOTYPE: $ 507 PROTOTYPE: $
385 CODE:
386 while (nthreads > started)
387 start_thread ();
388 508
389void 509void
390max_parallel(nthreads) 510max_parallel(nthreads)
391 int nthreads 511 int nthreads
392 PROTOTYPE: $ 512 PROTOTYPE: $
393 CODE:
394{
395 int cur = started;
396 while (cur > nthreads)
397 {
398 end_thread ();
399 cur--;
400 }
401
402 while (started > nthreads)
403 {
404 poll_wait ();
405 poll_cb (aTHX);
406 }
407}
408 513
409int 514int
410max_outstanding(nreqs) 515max_outstanding(nreqs)
411 int nreqs 516 int nreqs
412 PROTOTYPE: $ 517 PROTOTYPE: $
413 CODE: 518 CODE:
414 RETVAL = max_outstanding; 519 RETVAL = max_outstanding;
415 max_outstanding = nreqs; 520 max_outstanding = nreqs;
416 521
417void 522void
418aio_open(pathname,flags,mode,callback) 523aio_open(pathname,flags,mode,callback=&PL_sv_undef)
419 SV * pathname 524 SV * pathname
420 int flags 525 int flags
421 int mode 526 int mode
422 SV * callback 527 SV * callback
423 PROTOTYPE: $$$$ 528 PROTOTYPE: $$$;$
424 CODE: 529 CODE:
425{ 530{
426 aio_req req; 531 dREQ;
427
428 Newz (0, req, 1, aio_cb);
429
430 if (!req)
431 croak ("out of memory during aio_req allocation");
432 532
433 req->type = REQ_OPEN; 533 req->type = REQ_OPEN;
434 req->data = newSVsv (pathname); 534 req->data = newSVsv (pathname);
435 req->dataptr = SvPV_nolen (req->data); 535 req->dataptr = SvPVbyte_nolen (req->data);
436 req->fd = flags; 536 req->fd = flags;
437 req->mode = mode; 537 req->mode = mode;
438 req->callback = SvREFCNT_inc (callback);
439 538
440 send_req (req); 539 send_req (req);
441} 540}
442 541
443void 542void
444aio_close(fh,callback) 543aio_close(fh,callback=&PL_sv_undef)
445 InputStream fh 544 SV * fh
446 SV * callback 545 SV * callback
447 PROTOTYPE: $$ 546 PROTOTYPE: $;$
448 ALIAS: 547 ALIAS:
449 aio_close = REQ_CLOSE 548 aio_close = REQ_CLOSE
450 aio_fsync = REQ_FSYNC 549 aio_fsync = REQ_FSYNC
451 aio_fdatasync = REQ_FDATASYNC 550 aio_fdatasync = REQ_FDATASYNC
452 CODE: 551 CODE:
453{ 552{
553 dREQ;
554
555 req->type = ix;
556 req->fh = newSVsv (fh);
557 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
558
559 send_req (req);
560}
561
562void
563aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
564 SV * fh
565 UV offset
566 IV length
567 SV * data
568 IV dataoffset
569 SV * callback
570 ALIAS:
571 aio_read = REQ_READ
572 aio_write = REQ_WRITE
573 PROTOTYPE: $$$$$;$
574 CODE:
575{
454 aio_req req; 576 aio_req req;
577 STRLEN svlen;
578 char *svptr = SvPVbyte (data, svlen);
455 579
456 Newz (0, req, 1, aio_cb); 580 SvUPGRADE (data, SVt_PV);
581 SvPOK_on (data);
457 582
458 if (!req) 583 if (dataoffset < 0)
459 croak ("out of memory during aio_req allocation"); 584 dataoffset += svlen;
460 585
461 req->type = ix; 586 if (dataoffset < 0 || dataoffset > svlen)
462 req->fd = PerlIO_fileno (fh); 587 croak ("data offset outside of string");
463 req->callback = SvREFCNT_inc (callback);
464 588
465 send_req (req); 589 if (ix == REQ_WRITE)
466} 590 {
467 591 /* write: check length and adjust. */
468void 592 if (length < 0 || length + dataoffset > svlen)
469aio_read(fh,offset,length,data,dataoffset,callback) 593 length = svlen - dataoffset;
470 InputStream fh 594 }
471 UV offset 595 else
472 IV length 596 {
473 SV * data 597 /* read: grow scalar as necessary */
474 IV dataoffset 598 svptr = SvGROW (data, length + dataoffset);
475 SV * callback 599 }
476 PROTOTYPE: $$$$$$
477 CODE:
478 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
479
480void
481aio_write(fh,offset,length,data,dataoffset,callback)
482 OutputStream fh
483 UV offset
484 IV length
485 SV * data
486 IV dataoffset
487 SV * callback
488 PROTOTYPE: $$$$$$
489 CODE:
490 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
491
492void
493aio_readahead(fh,offset,length,callback)
494 InputStream fh
495 UV offset
496 IV length
497 SV * callback
498 PROTOTYPE: $$$$
499 CODE:
500{
501 aio_req req;
502 600
503 if (length < 0) 601 if (length < 0)
504 croak ("length must not be negative"); 602 croak ("length must not be negative");
505 603
506 Newz (0, req, 1, aio_cb); 604 {
605 dREQ;
507 606
508 if (!req) 607 req->type = ix;
509 croak ("out of memory during aio_req allocation"); 608 req->fh = newSVsv (fh);
609 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
610 : IoOFP (sv_2io (fh)));
611 req->offset = offset;
612 req->length = length;
613 req->data = SvREFCNT_inc (data);
614 req->dataptr = (char *)svptr + dataoffset;
615 req->callback = SvREFCNT_inc (callback);
616
617 send_req (req);
618 }
619}
620
621void
622aio_readahead(fh,offset,length,callback=&PL_sv_undef)
623 SV * fh
624 UV offset
625 IV length
626 SV * callback
627 PROTOTYPE: $$$;$
628 CODE:
629{
630 dREQ;
510 631
511 req->type = REQ_READAHEAD; 632 req->type = REQ_READAHEAD;
633 req->fh = newSVsv (fh);
512 req->fd = PerlIO_fileno (fh); 634 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
513 req->offset = offset; 635 req->offset = offset;
514 req->length = length; 636 req->length = length;
515 req->callback = SvREFCNT_inc (callback);
516 637
517 send_req (req); 638 send_req (req);
518} 639}
519 640
520void 641void
521aio_stat(fh_or_path,callback) 642aio_stat(fh_or_path,callback=&PL_sv_undef)
522 SV * fh_or_path 643 SV * fh_or_path
523 SV * callback 644 SV * callback
524 PROTOTYPE: $$
525 ALIAS: 645 ALIAS:
646 aio_stat = REQ_STAT
526 aio_lstat = 1 647 aio_lstat = REQ_LSTAT
527 CODE: 648 CODE:
528{ 649{
529 aio_req req; 650 dREQ;
530
531 Newz (0, req, 1, aio_cb);
532
533 if (!req)
534 croak ("out of memory during aio_req allocation");
535 651
536 New (0, req->statdata, 1, Stat_t); 652 New (0, req->statdata, 1, Stat_t);
537
538 if (!req->statdata) 653 if (!req->statdata)
539 croak ("out of memory during aio_req->statdata allocation"); 654 croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");
540 655
541 if (SvPOK (fh_or_path)) 656 if (SvPOK (fh_or_path))
542 { 657 {
543 req->type = ix ? REQ_LSTAT : REQ_STAT; 658 req->type = ix;
544 req->data = newSVsv (fh_or_path); 659 req->data = newSVsv (fh_or_path);
545 req->dataptr = SvPV_nolen (req->data); 660 req->dataptr = SvPVbyte_nolen (req->data);
546 } 661 }
547 else 662 else
548 { 663 {
549 req->type = REQ_FSTAT; 664 req->type = REQ_FSTAT;
665 req->fh = newSVsv (fh_or_path);
550 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 666 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
551 } 667 }
552 668
553 req->callback = SvREFCNT_inc (callback);
554
555 send_req (req); 669 send_req (req);
556} 670}
557 671
558void 672void
559aio_unlink(pathname,callback) 673aio_unlink(pathname,callback=&PL_sv_undef)
560 SV * pathname 674 SV * pathname
561 SV * callback 675 SV * callback
562 PROTOTYPE: $$ 676 ALIAS:
677 aio_unlink = REQ_UNLINK
678 aio_rmdir = REQ_RMDIR
563 CODE: 679 CODE:
564{ 680{
565 aio_req req; 681 dREQ;
566 682
567 Newz (0, req, 1, aio_cb); 683 req->type = ix;
568
569 if (!req)
570 croak ("out of memory during aio_req allocation");
571
572 req->type = REQ_UNLINK;
573 req->data = newSVsv (pathname); 684 req->data = newSVsv (pathname);
574 req->dataptr = SvPV_nolen (req->data); 685 req->dataptr = SvPVbyte_nolen (req->data);
575 req->callback = SvREFCNT_inc (callback);
576 686
577 send_req (req); 687 send_req (req);
578} 688}
689
690void
691aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
692 SV * oldpath
693 SV * newpath
694 SV * callback
695 CODE:
696{
697 dREQ;
698
699 req->type = REQ_SYMLINK;
700 req->fh = newSVsv (oldpath);
701 req->data2ptr = SvPVbyte_nolen (req->fh);
702 req->data = newSVsv (newpath);
703 req->dataptr = SvPVbyte_nolen (req->data);
704
705 send_req (req);
706}
707
708void
709flush()
710 PROTOTYPE:
711 CODE:
712 while (nreqs)
713 {
714 poll_wait ();
715 poll_cb ();
716 }
717
718void
719poll()
720 PROTOTYPE:
721 CODE:
722 if (nreqs)
723 {
724 poll_wait ();
725 poll_cb ();
726 }
579 727
580int 728int
581poll_fileno() 729poll_fileno()
582 PROTOTYPE: 730 PROTOTYPE:
583 CODE: 731 CODE:
… …
587 735
588int 736int
589poll_cb(...) 737poll_cb(...)
590 PROTOTYPE: 738 PROTOTYPE:
591 CODE: 739 CODE:
592 RETVAL = poll_cb (aTHX); 740 RETVAL = poll_cb ();
593 OUTPUT: 741 OUTPUT:
594 RETVAL 742 RETVAL
595 743
596void 744void
597poll_wait() 745poll_wait()

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