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Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.20 by root, Sun Jul 18 10:55:34 2004 UTC vs.
Revision 1.31 by root, Sun Jul 10 01:02:51 2005 UTC

… …
8#include <sys/stat.h> 8#include <sys/stat.h>
9#include <unistd.h> 9#include <unistd.h>
10#include <fcntl.h> 10#include <fcntl.h>
11#include <signal.h> 11#include <signal.h>
12#include <sched.h> 12#include <sched.h>
13#include <endian.h>
13 14
14typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 15typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */
15typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 16typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
16typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 17typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
17 18
18#ifndef __NR_pread64 19#if __i386 || __amd64
19# define __NR_pread64 __NR_pread 20# define STACKSIZE ( 256 * sizeof (long))
21#elif __ia64
22# define STACKSIZE (8192 * sizeof (long))
23#else
24# define STACKSIZE ( 512 * sizeof (long))
20#endif 25#endif
21#ifndef __NR_pwrite64
22# define __NR_pwrite64 __NR_pwrite
23#endif
24
25#define STACKSIZE 1024 /* yeah */
26 26
27enum { 27enum {
28 REQ_QUIT, 28 REQ_QUIT,
29 REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, 29 REQ_OPEN, REQ_CLOSE,
30 REQ_READ, REQ_WRITE, REQ_READAHEAD,
30 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK 31 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
32 REQ_FSYNC, REQ_FDATASYNC,
31}; 33};
32 34
33typedef struct { 35typedef struct {
34 char stack[STACKSIZE]; 36 char stack[STACKSIZE];
35} aio_thread; 37} aio_thread;
… …
48 int errorno; 50 int errorno;
49 SV *data, *callback; 51 SV *data, *callback;
50 void *dataptr; 52 void *dataptr;
51 STRLEN dataoffset; 53 STRLEN dataoffset;
52 54
53 struct stat64 *statdata; 55 Stat_t *statdata;
54} aio_cb; 56} aio_cb;
55 57
56typedef aio_cb *aio_req; 58typedef aio_cb *aio_req;
57 59
58static int started; 60static int started;
… …
69 aio_thread *thr; 71 aio_thread *thr;
70 72
71 New (0, thr, 1, aio_thread); 73 New (0, thr, 1, aio_thread);
72 74
73 if (clone (aio_proc, 75 if (clone (aio_proc,
74 &(thr->stack[STACKSIZE]), 76 &(thr->stack[STACKSIZE - 16]),
75 CLONE_VM|CLONE_FS|CLONE_FILES, 77 CLONE_VM|CLONE_FS|CLONE_FILES,
76 thr) >= 0) 78 thr) >= 0)
77 started++; 79 started++;
78 else 80 else
79 Safefree (thr); 81 Safefree (thr);
… …
95{ 97{
96 nreqs++; 98 nreqs++;
97 req->next = 0; 99 req->next = 0;
98 100
99 if (qe) 101 if (qe)
102 {
100 qe->next = req; 103 qe->next = req;
104 qe = req;
105 }
101 else 106 else
102 qe = qs = req; 107 qe = qs = req;
103 108
104 send_reqs (); 109 send_reqs ();
105} 110}
… …
161 req->callback = SvREFCNT_inc (callback); 166 req->callback = SvREFCNT_inc (callback);
162 167
163 send_req (req); 168 send_req (req);
164} 169}
165 170
171static void
172poll_wait ()
173{
174 fd_set rfd;
175 FD_ZERO(&rfd);
176 FD_SET(respipe[0], &rfd);
177
178 select (respipe[0] + 1, &rfd, 0, 0, 0);
179}
180
166static int 181static int
167poll_cb (pTHX) 182poll_cb (pTHX)
168{ 183{
169 dSP; 184 dSP;
170 int count = 0; 185 int count = 0;
171 aio_req req; 186 aio_req req;
172 187
173 while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 188 while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))
174 { 189 {
190 nreqs--;
191
175 if (req->type == REQ_QUIT) 192 if (req->type == REQ_QUIT)
176 { 193 {
177 Safefree (req->thread); 194 Safefree (req->thread);
178 started--; 195 started--;
179 } 196 }
… …
189 if (req->data) 206 if (req->data)
190 SvREFCNT_dec (req->data); 207 SvREFCNT_dec (req->data);
191 208
192 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) 209 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
193 { 210 {
194 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 211 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
195 PL_laststatval = req->result; 212 PL_laststatval = req->result;
196 PL_statcache.st_dev = req->statdata->st_dev; 213 PL_statcache = *(req->statdata);
197 PL_statcache.st_ino = req->statdata->st_ino;
198 PL_statcache.st_mode = req->statdata->st_mode;
199 PL_statcache.st_nlink = req->statdata->st_nlink;
200 PL_statcache.st_uid = req->statdata->st_uid;
201 PL_statcache.st_gid = req->statdata->st_gid;
202 PL_statcache.st_rdev = req->statdata->st_rdev;
203 PL_statcache.st_size = req->statdata->st_size;
204 PL_statcache.st_atime = req->statdata->st_atime;
205 PL_statcache.st_mtime = req->statdata->st_mtime;
206 PL_statcache.st_ctime = req->statdata->st_ctime;
207 PL_statcache.st_blksize = req->statdata->st_blksize;
208 PL_statcache.st_blocks = req->statdata->st_blocks;
209 214
210 Safefree (req->statdata); 215 Safefree (req->statdata);
211 } 216 }
212 217
213 PUSHMARK (SP); 218 PUSHMARK (SP);
… …
218 223
219 if (req->callback) 224 if (req->callback)
220 SvREFCNT_dec (req->callback); 225 SvREFCNT_dec (req->callback);
221 226
222 errno = errorno; 227 errno = errorno;
223 nreqs--;
224 count++; 228 count++;
225 } 229 }
226 230
227 Safefree (req); 231 Safefree (req);
228 } 232 }
… …
235 239
236static sigset_t fullsigset; 240static sigset_t fullsigset;
237 241
238#undef errno 242#undef errno
239#include <asm/unistd.h> 243#include <asm/unistd.h>
244#include <linux/types.h>
240#include <sys/prctl.h> 245#include <sys/prctl.h>
246
247#if __alpha || __ia64 || __hppa || __v850__
248# define stat kernelstat
249# define stat64 kernelstat64
250# include <asm/stat.h>
251# undef stat
252# undef stat64
253#else
254# define kernelstat stat
255# define kernelstat64 stat64
256#endif
257
258#define COPY_STATDATA \
259 req->statdata->st_dev = statdata.st_dev; \
260 req->statdata->st_ino = statdata.st_ino; \
261 req->statdata->st_mode = statdata.st_mode; \
262 req->statdata->st_nlink = statdata.st_nlink; \
263 req->statdata->st_uid = statdata.st_uid; \
264 req->statdata->st_gid = statdata.st_gid; \
265 req->statdata->st_rdev = statdata.st_rdev; \
266 req->statdata->st_size = statdata.st_size; \
267 req->statdata->st_atime = statdata.st_atime; \
268 req->statdata->st_mtime = statdata.st_mtime; \
269 req->statdata->st_ctime = statdata.st_ctime; \
270 req->statdata->st_blksize = statdata.st_blksize; \
271 req->statdata->st_blocks = statdata.st_blocks; \
241 272
242static int 273static int
243aio_proc (void *thr_arg) 274aio_proc (void *thr_arg)
244{ 275{
245 aio_thread *thr = thr_arg; 276 aio_thread *thr = thr_arg;
246 aio_req req; 277 aio_req req;
247 int errno; 278 int errno;
248 279
249 /* this is very much x86 and kernel-specific :(:(:( */ 280 /* this is very much kernel-specific :(:(:( */
250 /* we rely on gcc's ability to create closures. */ 281 /* we rely on gcc's ability to create closures. */
251 _syscall3(int,read,int,fd,char *,buf,size_t,count) 282 _syscall3(__kernel_size_t, read , unsigned int, fd, char *, buf, __kernel_size_t, count)
252 _syscall3(int,write,int,fd,char *,buf,size_t,count) 283 _syscall3(__kernel_size_t, write, unsigned int, fd, char *, buf, __kernel_size_t, count)
253 284
254 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) 285 _syscall3(long, open, char *, pathname, int, flags, int, mode)
255 _syscall1(int,close,int,fd) 286 _syscall1(long, close, unsigned int, fd)
256
257 _syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
258 _syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
259
260 _syscall2(int,stat64, const char *, filename, struct stat64 *, buf)
261 _syscall2(int,lstat64, const char *, filename, struct stat64 *, buf)
262 _syscall2(int,fstat64, int, fd, struct stat64 *, buf)
263
264 _syscall1(int,unlink, char *, filename); 287 _syscall1(long, unlink, char *, filename);
288 _syscall1(long, fsync, unsigned int, fd);
265 289
290#ifndef __NR_fdatasync
291# define __NR_fdatasync __NR_fsync
292#endif
293 _syscall1(long, fdatasync, unsigned int, fd);
294
295#if BYTE_ORDER == LITTLE_ENDIAN
296# define LOFF_ARG(off) (off & 0xffffffff), (off >> 32)
297#elif BYTE_ORDER == BIG_ENDIAN
298# define LOFF_ARG(off) (off >> 32), (off & 0xffffffff)
299#endif
300
301#ifndef __NR_pread64
302# define __NR_pread64 __NR_pread
303# define __NR_pwrite64 __NR_write
304#endif
305 _syscall5(__kernel_ssize_t, pread64 , unsigned int, fd, char *, buf,
306 __kernel_size_t, count, unsigned int, offset_lh, unsigned int, offset_hl)
307 _syscall5(__kernel_ssize_t, pwrite64, unsigned int, fd, char *, buf,
308 __kernel_size_t, count, unsigned int, offset_lh, unsigned int, offset_hl)
309 _syscall4(long, readahead, unsigned int, fd, unsigned int, offset_lh, unsigned int, offset_hl, __kernel_size_t, count);
310
311#if __NR_stat64
312 _syscall2(long, stat64 , const char *, filename, struct kernelstat64 *, buf)
313 _syscall2(long, lstat64, const char *, filename, struct kernelstat64 *, buf)
314 _syscall2(long, fstat64, int , fd , struct kernelstat64 *, buf)
315#elif __NR_stat
316 _syscall2(long, stat , const char *, filename, struct kernelstat *, buf)
317 _syscall2(long, lstat, const char *, filename, struct kernelstat *, buf)
318 _syscall2(long, fstat, int , fd , struct kernelstat *, buf)
319#else
320# error "neither stat64 nor stat defined"
321#endif
322
323 /* the following two calls might clobber errno */
266 sigprocmask (SIG_SETMASK, &fullsigset, 0); 324 sigprocmask (SIG_SETMASK, &fullsigset, 0);
267 prctl (PR_SET_PDEATHSIG, SIGKILL); 325 prctl (PR_SET_PDEATHSIG, SIGKILL);
268 326
269 /* then loop */ 327 /* then loop */
270 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 328 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
… …
272 req->thread = thr; 330 req->thread = thr;
273 errno = 0; /* strictly unnecessary */ 331 errno = 0; /* strictly unnecessary */
274 332
275 switch (req->type) 333 switch (req->type)
276 { 334 {
277 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break; 335 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, LOFF_ARG (req->offset)); break;
278 case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break; 336 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, LOFF_ARG (req->offset)); break;
337 case REQ_READAHEAD: req->result = readahead (req->fd, LOFF_ARG (req->offset), req->length); break;
338
339#if __NR_stat64
340 struct kernelstat64 statdata;
341 case REQ_STAT: req->result = stat64 (req->dataptr, &statdata); COPY_STATDATA; break;
342 case REQ_LSTAT: req->result = lstat64 (req->dataptr, &statdata); COPY_STATDATA; break;
343 case REQ_FSTAT: req->result = fstat64 (req->fd , &statdata); COPY_STATDATA; break;
344#else
345 struct kernelstat statdata;
346 case REQ_STAT: req->result = stat (req->dataptr, &statdata); COPY_STATDATA; break;
347 case REQ_LSTAT: req->result = lstat (req->dataptr, &statdata); COPY_STATDATA; break;
348 case REQ_FSTAT: req->result = fstat (req->fd , &statdata); COPY_STATDATA; break;
349#endif
350
279 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 351 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
280 case REQ_CLOSE: req->result = close (req->fd); break; 352 case REQ_CLOSE: req->result = close (req->fd); break;
281 case REQ_STAT: req->result = stat64 (req->dataptr, req->statdata); break;
282 case REQ_LSTAT: req->result = lstat64 (req->dataptr, req->statdata); break;
283 case REQ_FSTAT: req->result = fstat64 (req->fd, req->statdata); break;
284 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 353 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
354
355 case REQ_FSYNC: req->result = fsync (req->fd); break;
356 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
285 357
286 case REQ_QUIT: 358 case REQ_QUIT:
287 default:
288 write (respipe[1], (void *)&req, sizeof (req)); 359 write (respipe[1], (void *)&req, sizeof (req));
289 return 0; 360 return 0;
361
362 default:
363 req->result = ENOSYS;
364 break;
290 } 365 }
291 366
292 req->errorno = errno; 367 req->errorno = errno;
293 write (respipe[1], (void *)&req, sizeof (req)); 368 write (respipe[1], (void *)&req, sizeof (req));
294 } 369 }
… …
327void 402void
328max_parallel(nthreads) 403max_parallel(nthreads)
329 int nthreads 404 int nthreads
330 PROTOTYPE: $ 405 PROTOTYPE: $
331 CODE: 406 CODE:
407{
332 int cur = started; 408 int cur = started;
333 while (cur > nthreads) 409 while (cur > nthreads)
334 { 410 {
335 end_thread (); 411 end_thread ();
336 cur--; 412 cur--;
337 } 413 }
338 414
339 while (started > nthreads) 415 while (started > nthreads)
340 { 416 {
341 fd_set rfd; 417 poll_wait ();
342 FD_ZERO(&rfd);
343 FD_SET(respipe[0], &rfd);
344
345 select (respipe[0] + 1, &rfd, 0, 0, 0);
346 poll_cb (aTHX); 418 poll_cb (aTHX);
347 } 419 }
420}
348 421
349void 422void
350aio_open(pathname,flags,mode,callback) 423aio_open(pathname,flags,mode,callback)
351 SV * pathname 424 SV * pathname
352 int flags 425 int flags
353 int mode 426 int mode
354 SV * callback 427 SV * callback
355 PROTOTYPE: $$$$ 428 PROTOTYPE: $$$$
356 CODE: 429 CODE:
430{
357 aio_req req; 431 aio_req req;
358 432
359 Newz (0, req, 1, aio_cb); 433 Newz (0, req, 1, aio_cb);
360 434
361 if (!req) 435 if (!req)
… …
367 req->fd = flags; 441 req->fd = flags;
368 req->mode = mode; 442 req->mode = mode;
369 req->callback = SvREFCNT_inc (callback); 443 req->callback = SvREFCNT_inc (callback);
370 444
371 send_req (req); 445 send_req (req);
446}
372 447
373void 448void
374aio_close(fh,callback) 449aio_close(fh,callback)
375 InputStream fh 450 InputStream fh
376 SV * callback 451 SV * callback
377 PROTOTYPE: $$ 452 PROTOTYPE: $$
453 ALIAS:
454 aio_close = REQ_CLOSE
455 aio_fsync = REQ_FSYNC
456 aio_fdatasync = REQ_FDATASYNC
378 CODE: 457 CODE:
458{
379 aio_req req; 459 aio_req req;
380 460
381 Newz (0, req, 1, aio_cb); 461 Newz (0, req, 1, aio_cb);
382 462
383 if (!req) 463 if (!req)
384 croak ("out of memory during aio_req allocation"); 464 croak ("out of memory during aio_req allocation");
385 465
386 req->type = REQ_CLOSE; 466 req->type = ix;
387 req->fd = PerlIO_fileno (fh); 467 req->fd = PerlIO_fileno (fh);
388 req->callback = SvREFCNT_inc (callback); 468 req->callback = SvREFCNT_inc (callback);
389 469
390 send_req (req); 470 send_req (req);
471}
391 472
392void 473void
393aio_read(fh,offset,length,data,dataoffset,callback) 474aio_read(fh,offset,length,data,dataoffset,callback)
394 InputStream fh 475 InputStream fh
395 UV offset 476 UV offset
… …
412 PROTOTYPE: $$$$$$ 493 PROTOTYPE: $$$$$$
413 CODE: 494 CODE:
414 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 495 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
415 496
416void 497void
498aio_readahead(fh,offset,length,callback)
499 InputStream fh
500 UV offset
501 IV length
502 SV * callback
503 PROTOTYPE: $$$$
504 CODE:
505{
506 aio_req req;
507
508 if (length < 0)
509 croak ("length must not be negative");
510
511 Newz (0, req, 1, aio_cb);
512
513 if (!req)
514 croak ("out of memory during aio_req allocation");
515
516 req->type = REQ_READAHEAD;
517 req->fd = PerlIO_fileno (fh);
518 req->offset = offset;
519 req->length = length;
520 req->callback = SvREFCNT_inc (callback);
521
522 send_req (req);
523}
524
525void
417aio_stat(fh_or_path,callback) 526aio_stat(fh_or_path,callback)
418 SV * fh_or_path 527 SV * fh_or_path
419 SV * callback 528 SV * callback
420 PROTOTYPE: $$ 529 PROTOTYPE: $$
421 ALIAS: 530 ALIAS:
422 aio_lstat = 1 531 aio_lstat = 1
423 CODE: 532 CODE:
533{
424 aio_req req; 534 aio_req req;
425 535
426 Newz (0, req, 1, aio_cb); 536 Newz (0, req, 1, aio_cb);
427 537
428 if (!req) 538 if (!req)
429 croak ("out of memory during aio_req allocation"); 539 croak ("out of memory during aio_req allocation");
430 540
431 New (0, req->statdata, 1, struct stat64); 541 New (0, req->statdata, 1, Stat_t);
432 542
433 if (!req->statdata) 543 if (!req->statdata)
434 croak ("out of memory during aio_req->statdata allocation"); 544 croak ("out of memory during aio_req->statdata allocation");
435 545
436 if (SvPOK (fh_or_path)) 546 if (SvPOK (fh_or_path))
… …
446 } 556 }
447 557
448 req->callback = SvREFCNT_inc (callback); 558 req->callback = SvREFCNT_inc (callback);
449 559
450 send_req (req); 560 send_req (req);
561}
451 562
452void 563void
453aio_unlink(pathname,callback) 564aio_unlink(pathname,callback)
454 SV * pathname 565 SV * pathname
455 SV * callback 566 SV * callback
456 PROTOTYPE: $$ 567 PROTOTYPE: $$
457 CODE: 568 CODE:
569{
458 aio_req req; 570 aio_req req;
459 571
460 Newz (0, req, 1, aio_cb); 572 Newz (0, req, 1, aio_cb);
461 573
462 if (!req) 574 if (!req)
… …
466 req->data = newSVsv (pathname); 578 req->data = newSVsv (pathname);
467 req->dataptr = SvPV_nolen (req->data); 579 req->dataptr = SvPV_nolen (req->data);
468 req->callback = SvREFCNT_inc (callback); 580 req->callback = SvREFCNT_inc (callback);
469 581
470 send_req (req); 582 send_req (req);
583}
471 584
472int 585int
473poll_fileno() 586poll_fileno()
474 PROTOTYPE: 587 PROTOTYPE:
475 CODE: 588 CODE:
… …
483 CODE: 596 CODE:
484 RETVAL = poll_cb (aTHX); 597 RETVAL = poll_cb (aTHX);
485 OUTPUT: 598 OUTPUT:
486 RETVAL 599 RETVAL
487 600
601void
602poll_wait()
603 PROTOTYPE:
604 CODE:
605 poll_wait ();
606
488int 607int
489nreqs() 608nreqs()
490 PROTOTYPE: 609 PROTOTYPE:
491 CODE: 610 CODE:
492 RETVAL = nreqs; 611 RETVAL = nreqs;

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