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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 1.26 by root, Wed Aug 17 03:52:20 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,
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
73static void free_req (aio_req req)
74{
75 if (req->data)
76 SvREFCNT_dec (req->data);
77
78 if (req->fh)
79 SvREFCNT_dec (req->fh);
80
81 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
82 Safefree (req->statdata);
83
84 if (req->callback)
85 SvREFCNT_dec (req->callback);
86
87 Safefree (req);
88}
89
68static void 90static void
69poll_wait () 91poll_wait ()
70{ 92{
71 if (!nreqs) 93 if (nreqs && !ress)
72 return; 94 {
73
74 fd_set rfd; 95 fd_set rfd;
75 FD_ZERO(&rfd); 96 FD_ZERO(&rfd);
76 FD_SET(respipe [0], &rfd); 97 FD_SET(respipe [0], &rfd);
77 98
78 select (respipe [0] + 1, &rfd, 0, 0, 0); 99 select (respipe [0] + 1, &rfd, 0, 0, 0);
100 }
79} 101}
80 102
81static int 103static int
82poll_cb (pTHX) 104poll_cb ()
83{ 105{
84 dSP; 106 dSP;
85 int count = 0; 107 int count = 0;
108 int do_croak = 0;
86 aio_req req; 109 aio_req req, prv;
87 110
111 pthread_mutex_lock (&reslock);
112
88 { 113 {
89 /* read and signals sent by the worker threads */ 114 /* read any signals sent by the worker threads */
90 char buf [32]; 115 char buf [32];
91 while (read (respipe [0], buf, 32) > 0) 116 while (read (respipe [0], buf, 32) == 32)
92 ; 117 ;
93 } 118 }
94 119
95 for (;;)
96 {
97 pthread_mutex_lock (&reslock);
98
99 req = ress; 120 req = ress;
121 ress = rese = 0;
100 122
101 if (ress)
102 {
103 ress = ress->next;
104 if (!ress) rese = 0;
105 }
106
107 pthread_mutex_unlock (&reslock); 123 pthread_mutex_unlock (&reslock);
108 124
109 if (!req) 125 while (req)
110 break; 126 {
111
112 nreqs--; 127 nreqs--;
113 128
114 if (req->type == REQ_QUIT) 129 if (req->type == REQ_QUIT)
115 started--; 130 started--;
116 else 131 else
… …
120 135
121 if (req->type == REQ_READ) 136 if (req->type == REQ_READ)
122 SvCUR_set (req->data, req->dataoffset 137 SvCUR_set (req->data, req->dataoffset
123 + req->result > 0 ? req->result : 0); 138 + req->result > 0 ? req->result : 0);
124 139
125 if (req->data)
126 SvREFCNT_dec (req->data);
127
128 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) 140 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
129 { 141 {
130 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 142 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
131 PL_laststatval = req->result; 143 PL_laststatval = req->result;
132 PL_statcache = *(req->statdata); 144 PL_statcache = *(req->statdata);
133
134 Safefree (req->statdata);
135 } 145 }
136 146
147 ENTER;
137 PUSHMARK (SP); 148 PUSHMARK (SP);
138 XPUSHs (sv_2mortal (newSViv (req->result))); 149 XPUSHs (sv_2mortal (newSViv (req->result)));
139 150
140 if (req->type == REQ_OPEN) 151 if (req->type == REQ_OPEN)
141 { 152 {
… …
144 155
145 PUTBACK; 156 PUTBACK;
146 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 157 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
147 SPAGAIN; 158 SPAGAIN;
148 159
149 fh = POPs; 160 fh = SvREFCNT_inc (POPs);
150 161
151 PUSHMARK (SP); 162 PUSHMARK (SP);
152 XPUSHs (fh); 163 XPUSHs (sv_2mortal (fh));
153 } 164 }
154 165
166 if (SvOK (req->callback))
167 {
155 PUTBACK; 168 PUTBACK;
156 call_sv (req->callback, G_VOID | G_EVAL); 169 call_sv (req->callback, G_VOID | G_EVAL);
157 SPAGAIN; 170 SPAGAIN;
171 }
172
173 LEAVE;
174
175 do_croak = SvTRUE (ERRSV);
158 176
159 if (req->callback)
160 SvREFCNT_dec (req->callback);
161
162 errno = errorno; 177 errno = errorno;
163 count++; 178 count++;
164 } 179 }
165 180
166 Safefree (req); 181 prv = req;
182 req = req->next;
183 free_req (prv);
184
185 if (do_croak)
186 croak (0);
167 } 187 }
168 188
169 return count; 189 return count;
170} 190}
171 191
… …
220 240
221static void 241static void
222end_thread (void) 242end_thread (void)
223{ 243{
224 aio_req req; 244 aio_req req;
225 New (0, req, 1, aio_cb); 245 Newz (0, req, 1, aio_cb);
226 req->type = REQ_QUIT; 246 req->type = REQ_QUIT;
227 247
228 send_req (req); 248 send_req (req);
229} 249}
230 250
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);
239 251
240 SvUPGRADE (data, SVt_PV); 252static void min_parallel (int nthreads)
241 SvPOK_on (data); 253{
254 while (nthreads > started)
255 start_thread ();
256}
242 257
243 if (dataoffset < 0) 258static void max_parallel (int nthreads)
259{
260 int cur = started;
261 while (cur > nthreads)
262 {
263 end_thread ();
264 cur--;
265 }
266
267 while (started > nthreads)
268 {
269 poll_wait ();
270 poll_cb ();
271 }
272}
273
274static void create_pipe ()
275{
276 if (pipe (respipe))
277 croak ("unable to initialize result pipe");
278
279 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
280 croak ("cannot set result pipe to nonblocking mode");
281
282 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
283 croak ("cannot set result pipe to nonblocking mode");
284}
285
286static void atfork_prepare (void)
287{
288 pthread_mutex_lock (&frklock);
289 pthread_mutex_lock (&reqlock);
290 pthread_mutex_lock (&reslock);
291}
292
293static void atfork_parent (void)
294{
295 pthread_mutex_unlock (&reslock);
296 pthread_mutex_unlock (&reqlock);
297 pthread_mutex_unlock (&frklock);
298}
299
300static void atfork_child (void)
301{
302 int restart = started;
303 started = 0;
304
305 while (reqs)
306 {
307 free_req (reqs);
308 reqs = reqs->next;
309 }
310
311 reqs = reqe = 0;
312
313 while (ress)
314 {
315 free_req (ress);
316 ress = ress->next;
317 }
318
319 ress = rese = 0;
320
321 close (respipe [0]);
322 close (respipe [1]);
323
324 create_pipe ();
325
326 atfork_parent ();
327
328 min_parallel (restart);
329}
330
331/*****************************************************************************/
332/* work around various missing functions */
333
334#if !HAVE_PREADWRITE
335# define pread aio_pread
336# define pwrite aio_pwrite
337
338/*
339 * make our pread/pwrite safe against themselves, but not against
340 * normal read/write by using a mutex. slows down execution a lot,
341 * but that's your problem, not mine.
342 */
343static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
344
345static ssize_t
346pread (int fd, void *buf, size_t count, off_t offset)
347{
348 ssize_t res;
349 off_t ooffset;
350
351 pthread_mutex_lock (&iolock);
352 ooffset = lseek (fd, 0, SEEK_CUR);
353 lseek (fd, offset, SEEK_SET);
354 res = read (fd, buf, count);
355 lseek (fd, ooffset, SEEK_SET);
356 pthread_mutex_unlock (&iolock);
357
358 return res;
359}
360
361static ssize_t
362pwrite (int fd, void *buf, size_t count, off_t offset)
363{
364 ssize_t res;
365 off_t ooffset;
366
367 pthread_mutex_lock (&iolock);
368 ooffset = lseek (fd, 0, SEEK_CUR);
369 lseek (fd, offset, SEEK_SET);
370 res = write (fd, buf, count);
371 lseek (fd, offset, SEEK_SET);
372 pthread_mutex_unlock (&iolock);
373
374 return res;
375}
376#endif
377
378#if !HAVE_FDATASYNC
379# define fdatasync fsync
380#endif
381
382#if !HAVE_READAHEAD
383# define readahead aio_readahead
384
385static char readahead_buf[4096];
386
387static ssize_t
388readahead (int fd, off_t offset, size_t count)
389{
390 while (count > 0)
391 {
392 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
393
394 pread (fd, readahead_buf, len, offset);
244 dataoffset += svlen; 395 offset += len;
245 396 count -= len;
246 if (dataoffset < 0 || dataoffset > svlen)
247 croak ("data offset outside of string");
248
249 if (dowrite)
250 { 397 }
251 /* write: check length and adjust. */
252 if (length < 0 || length + dataoffset > svlen)
253 length = svlen - dataoffset;
254 }
255 else
256 {
257 /* read: grow scalar as necessary */
258 svptr = SvGROW (data, length + dataoffset);
259 }
260 398
261 if (length < 0) 399 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} 400}
401#endif
402
403/*****************************************************************************/
279 404
280static void * 405static void *
281aio_proc (void *thr_arg) 406aio_proc (void *thr_arg)
282{ 407{
283 aio_req req; 408 aio_req req;
… …
309 434
310 type = req->type; 435 type = req->type;
311 436
312 switch (type) 437 switch (type)
313 { 438 {
314 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; 439 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; 440 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
316#if SYS_readahead 441
317 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 442 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
321 443
322 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 444 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
323 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 445 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 446 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325 447
326 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 448 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
327 case REQ_CLOSE: req->result = close (req->fd); break; 449 case REQ_CLOSE: req->result = close (req->fd); break;
328 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 450 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
451 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
452 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
329 453
454 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
330 case REQ_FSYNC: req->result = fsync (req->fd); break; 455 case REQ_FSYNC: req->result = fsync (req->fd); break;
331 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332 456
333 case REQ_QUIT: 457 case REQ_QUIT:
334 break; 458 break;
335 459
336 default: 460 default:
… …
362 while (type != REQ_QUIT); 486 while (type != REQ_QUIT);
363 487
364 return 0; 488 return 0;
365} 489}
366 490
491#define dREQ \
492 aio_req req; \
493 \
494 if (SvOK (callback) && !SvROK (callback)) \
495 croak ("clalback must be undef or of reference type"); \
496 \
497 Newz (0, req, 1, aio_cb); \
498 if (!req) \
499 croak ("out of memory during aio_req allocation"); \
500 \
501 req->callback = SvREFCNT_inc (callback);
502
367MODULE = IO::AIO PACKAGE = IO::AIO 503MODULE = IO::AIO PACKAGE = IO::AIO
368 504
505PROTOTYPES: ENABLE
506
369BOOT: 507BOOT:
370{ 508{
371 if (pipe (respipe)) 509 create_pipe ();
372 croak ("unable to initialize result pipe"); 510 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
373
374 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
375 croak ("cannot set result pipe to nonblocking mode");
376
377 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
378 croak ("cannot set result pipe to nonblocking mode");
379} 511}
380 512
381void 513void
382min_parallel(nthreads) 514min_parallel(nthreads)
383 int nthreads 515 int nthreads
384 PROTOTYPE: $ 516 PROTOTYPE: $
385 CODE:
386 while (nthreads > started)
387 start_thread ();
388 517
389void 518void
390max_parallel(nthreads) 519max_parallel(nthreads)
391 int nthreads 520 int nthreads
392 PROTOTYPE: $ 521 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}
408 522
409int 523int
410max_outstanding(nreqs) 524max_outstanding(nreqs)
411 int nreqs 525 int nreqs
412 PROTOTYPE: $ 526 PROTOTYPE: $
413 CODE: 527 CODE:
414 RETVAL = max_outstanding; 528 RETVAL = max_outstanding;
415 max_outstanding = nreqs; 529 max_outstanding = nreqs;
416 530
417void 531void
418aio_open(pathname,flags,mode,callback) 532aio_open(pathname,flags,mode,callback=&PL_sv_undef)
419 SV * pathname 533 SV * pathname
420 int flags 534 int flags
421 int mode 535 int mode
422 SV * callback 536 SV * callback
423 PROTOTYPE: $$$$ 537 PROTOTYPE: $$$;$
424 CODE: 538 CODE:
425{ 539{
426 aio_req req; 540 dREQ;
427
428 Newz (0, req, 1, aio_cb);
429
430 if (!req)
431 croak ("out of memory during aio_req allocation");
432 541
433 req->type = REQ_OPEN; 542 req->type = REQ_OPEN;
434 req->data = newSVsv (pathname); 543 req->data = newSVsv (pathname);
435 req->dataptr = SvPV_nolen (req->data); 544 req->dataptr = SvPVbyte_nolen (req->data);
436 req->fd = flags; 545 req->fd = flags;
437 req->mode = mode; 546 req->mode = mode;
438 req->callback = SvREFCNT_inc (callback);
439 547
440 send_req (req); 548 send_req (req);
441} 549}
442 550
443void 551void
444aio_close(fh,callback) 552aio_close(fh,callback=&PL_sv_undef)
445 InputStream fh 553 SV * fh
446 SV * callback 554 SV * callback
447 PROTOTYPE: $$ 555 PROTOTYPE: $;$
448 ALIAS: 556 ALIAS:
449 aio_close = REQ_CLOSE 557 aio_close = REQ_CLOSE
450 aio_fsync = REQ_FSYNC 558 aio_fsync = REQ_FSYNC
451 aio_fdatasync = REQ_FDATASYNC 559 aio_fdatasync = REQ_FDATASYNC
452 CODE: 560 CODE:
453{ 561{
562 dREQ;
563
564 req->type = ix;
565 req->fh = newSVsv (fh);
566 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
567
568 send_req (req);
569}
570
571void
572aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
573 SV * fh
574 UV offset
575 IV length
576 SV * data
577 IV dataoffset
578 SV * callback
579 ALIAS:
580 aio_read = REQ_READ
581 aio_write = REQ_WRITE
582 PROTOTYPE: $$$$$;$
583 CODE:
584{
454 aio_req req; 585 aio_req req;
586 STRLEN svlen;
587 char *svptr = SvPVbyte (data, svlen);
455 588
456 Newz (0, req, 1, aio_cb); 589 SvUPGRADE (data, SVt_PV);
590 SvPOK_on (data);
457 591
458 if (!req) 592 if (dataoffset < 0)
459 croak ("out of memory during aio_req allocation"); 593 dataoffset += svlen;
460 594
461 req->type = ix; 595 if (dataoffset < 0 || dataoffset > svlen)
462 req->fd = PerlIO_fileno (fh); 596 croak ("data offset outside of string");
463 req->callback = SvREFCNT_inc (callback);
464 597
465 send_req (req); 598 if (ix == REQ_WRITE)
466} 599 {
467 600 /* write: check length and adjust. */
468void 601 if (length < 0 || length + dataoffset > svlen)
469aio_read(fh,offset,length,data,dataoffset,callback) 602 length = svlen - dataoffset;
470 InputStream fh 603 }
471 UV offset 604 else
472 IV length 605 {
473 SV * data 606 /* read: grow scalar as necessary */
474 IV dataoffset 607 svptr = SvGROW (data, length + dataoffset);
475 SV * callback 608 }
476 PROTOTYPE: $$$$$$
477 CODE:
478 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
479
480void
481aio_write(fh,offset,length,data,dataoffset,callback)
482 OutputStream fh
483 UV offset
484 IV length
485 SV * data
486 IV dataoffset
487 SV * callback
488 PROTOTYPE: $$$$$$
489 CODE:
490 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
491
492void
493aio_readahead(fh,offset,length,callback)
494 InputStream fh
495 UV offset
496 IV length
497 SV * callback
498 PROTOTYPE: $$$$
499 CODE:
500{
501 aio_req req;
502 609
503 if (length < 0) 610 if (length < 0)
504 croak ("length must not be negative"); 611 croak ("length must not be negative");
505 612
506 Newz (0, req, 1, aio_cb); 613 {
614 dREQ;
507 615
508 if (!req) 616 req->type = ix;
509 croak ("out of memory during aio_req allocation"); 617 req->fh = newSVsv (fh);
618 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
619 : IoOFP (sv_2io (fh)));
620 req->offset = offset;
621 req->length = length;
622 req->data = SvREFCNT_inc (data);
623 req->dataptr = (char *)svptr + dataoffset;
624 req->callback = SvREFCNT_inc (callback);
625
626 send_req (req);
627 }
628}
629
630void
631aio_readahead(fh,offset,length,callback=&PL_sv_undef)
632 SV * fh
633 UV offset
634 IV length
635 SV * callback
636 PROTOTYPE: $$$;$
637 CODE:
638{
639 dREQ;
510 640
511 req->type = REQ_READAHEAD; 641 req->type = REQ_READAHEAD;
642 req->fh = newSVsv (fh);
512 req->fd = PerlIO_fileno (fh); 643 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
513 req->offset = offset; 644 req->offset = offset;
514 req->length = length; 645 req->length = length;
515 req->callback = SvREFCNT_inc (callback);
516 646
517 send_req (req); 647 send_req (req);
518} 648}
519 649
520void 650void
521aio_stat(fh_or_path,callback) 651aio_stat(fh_or_path,callback=&PL_sv_undef)
522 SV * fh_or_path 652 SV * fh_or_path
523 SV * callback 653 SV * callback
524 PROTOTYPE: $$
525 ALIAS: 654 ALIAS:
655 aio_stat = REQ_STAT
526 aio_lstat = 1 656 aio_lstat = REQ_LSTAT
527 CODE: 657 CODE:
528{ 658{
529 aio_req req; 659 dREQ;
530
531 Newz (0, req, 1, aio_cb);
532
533 if (!req)
534 croak ("out of memory during aio_req allocation");
535 660
536 New (0, req->statdata, 1, Stat_t); 661 New (0, req->statdata, 1, Stat_t);
537
538 if (!req->statdata) 662 if (!req->statdata)
539 croak ("out of memory during aio_req->statdata allocation"); 663 croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");
540 664
541 if (SvPOK (fh_or_path)) 665 if (SvPOK (fh_or_path))
542 { 666 {
543 req->type = ix ? REQ_LSTAT : REQ_STAT; 667 req->type = ix;
544 req->data = newSVsv (fh_or_path); 668 req->data = newSVsv (fh_or_path);
545 req->dataptr = SvPV_nolen (req->data); 669 req->dataptr = SvPVbyte_nolen (req->data);
546 } 670 }
547 else 671 else
548 { 672 {
549 req->type = REQ_FSTAT; 673 req->type = REQ_FSTAT;
674 req->fh = newSVsv (fh_or_path);
550 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 675 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
551 } 676 }
552 677
553 req->callback = SvREFCNT_inc (callback);
554
555 send_req (req); 678 send_req (req);
556} 679}
557 680
558void 681void
559aio_unlink(pathname,callback) 682aio_unlink(pathname,callback=&PL_sv_undef)
560 SV * pathname 683 SV * pathname
561 SV * callback 684 SV * callback
562 PROTOTYPE: $$ 685 ALIAS:
686 aio_unlink = REQ_UNLINK
687 aio_rmdir = REQ_RMDIR
563 CODE: 688 CODE:
564{ 689{
565 aio_req req; 690 dREQ;
566 691
567 Newz (0, req, 1, aio_cb); 692 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); 693 req->data = newSVsv (pathname);
574 req->dataptr = SvPV_nolen (req->data); 694 req->dataptr = SvPVbyte_nolen (req->data);
575 req->callback = SvREFCNT_inc (callback);
576 695
577 send_req (req); 696 send_req (req);
578} 697}
698
699void
700aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
701 SV * oldpath
702 SV * newpath
703 SV * callback
704 CODE:
705{
706 dREQ;
707
708 req->type = REQ_SYMLINK;
709 req->fh = newSVsv (oldpath);
710 req->data2ptr = SvPVbyte_nolen (req->fh);
711 req->data = newSVsv (newpath);
712 req->dataptr = SvPVbyte_nolen (req->data);
713
714 send_req (req);
715}
716
717void
718flush()
719 PROTOTYPE:
720 CODE:
721 while (nreqs)
722 {
723 poll_wait ();
724 poll_cb ();
725 }
726
727void
728poll()
729 PROTOTYPE:
730 CODE:
731 if (nreqs)
732 {
733 poll_wait ();
734 poll_cb ();
735 }
579 736
580int 737int
581poll_fileno() 738poll_fileno()
582 PROTOTYPE: 739 PROTOTYPE:
583 CODE: 740 CODE:
… …
587 744
588int 745int
589poll_cb(...) 746poll_cb(...)
590 PROTOTYPE: 747 PROTOTYPE:
591 CODE: 748 CODE:
592 RETVAL = poll_cb (aTHX); 749 RETVAL = poll_cb ();
593 OUTPUT: 750 OUTPUT:
594 RETVAL 751 RETVAL
595 752
596void 753void
597poll_wait() 754poll_wait()

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