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/cvs/Linux-AIO/AIO.xs
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Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.27 by root, Fri Jul 8 03:10:00 2005 UTC vs.
Revision 1.32 by root, Tue Jul 12 10:51:09 2005 UTC

… …
24# define STACKSIZE ( 512 * sizeof (long)) 24# define STACKSIZE ( 512 * sizeof (long))
25#endif 25#endif
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;
… …
167} 169}
168 170
169static void 171static void
170poll_wait () 172poll_wait ()
171{ 173{
174 if (!nreqs)
175 return;
176
172 fd_set rfd; 177 fd_set rfd;
173 FD_ZERO(&rfd); 178 FD_ZERO(&rfd);
174 FD_SET(respipe[0], &rfd); 179 FD_SET(respipe[0], &rfd);
175 180
176 select (respipe[0] + 1, &rfd, 0, 0, 0); 181 select (respipe[0] + 1, &rfd, 0, 0, 0);
… …
236} 241}
237 242
238static sigset_t fullsigset; 243static sigset_t fullsigset;
239 244
240#undef errno 245#undef errno
241#include <asm/unistd.h> 246#include <linux/unistd.h>
247#include <linux/types.h>
242#include <sys/prctl.h> 248#include <sys/prctl.h>
243
244#if BYTE_ORDER == LITTLE_ENDIAN
245# define LONG_LONG_PAIR(HI, LO) LO, HI
246#elif BYTE_ORDER == BIG_ENDIAN
247# define LONG_LONG_PAIR(HI, LO) HI, LO
248#endif
249 249
250#if __alpha || __ia64 || __hppa || __v850__ 250#if __alpha || __ia64 || __hppa || __v850__
251# define stat kernelstat 251# define stat kernelstat
252# define stat64 kernelstat64 252# define stat64 kernelstat64
253# include <asm/stat.h> 253# include <asm/stat.h>
… …
280 aio_req req; 280 aio_req req;
281 int errno; 281 int errno;
282 282
283 /* this is very much kernel-specific :(:(:( */ 283 /* this is very much kernel-specific :(:(:( */
284 /* we rely on gcc's ability to create closures. */ 284 /* we rely on gcc's ability to create closures. */
285 _syscall3(int,read,int,fd,char *,buf,size_t,count) 285 _syscall3(__kernel_size_t, read , unsigned int, fd, char *, buf, __kernel_size_t, count)
286 _syscall3(int,write,int,fd,char *,buf,size_t,count) 286 _syscall3(__kernel_size_t, write, unsigned int, fd, char *, buf, __kernel_size_t, count)
287 287
288 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) 288 _syscall3(long, open, char *, pathname, int, flags, int, mode)
289 _syscall1(int,close,int,fd) 289 _syscall1(long, close, unsigned int, fd)
290 _syscall1(long, unlink, char *, filename);
291 _syscall1(long, fsync, unsigned int, fd);
290 292
291#if __NR_pread64 293#ifndef __NR_fdatasync
292 _syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lh,unsigned int,offset_hl) 294# define __NR_fdatasync __NR_fsync
293 _syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lh,unsigned int,offset_hl)
294#elif __NR_pread
295 _syscall4(int,pread,int,fd,char *,buf,size_t,count,offset_t,offset)
296 _syscall4(int,pwrite,int,fd,char *,buf,size_t,count,offset_t,offset)
297#else
298# error "neither pread nor pread64 defined"
299#endif 295#endif
296 _syscall1(long, fdatasync, unsigned int, fd);
300 297
298#if BYTE_ORDER == LITTLE_ENDIAN
299# define LOFF_ARG(off) (off & 0xffffffff), (off >> 32)
300#elif BYTE_ORDER == BIG_ENDIAN
301# define LOFF_ARG(off) (off >> 32), (off & 0xffffffff)
302#endif
303
304#ifndef __NR_pread64
305# define __NR_pread64 __NR_pread
306# define __NR_pwrite64 __NR_write
307#endif
308 _syscall5(__kernel_ssize_t, pread64 , unsigned int, fd, char *, buf,
309 __kernel_size_t, count, unsigned int, offset_lh, unsigned int, offset_hl)
310 _syscall5(__kernel_ssize_t, pwrite64, unsigned int, fd, char *, buf,
311 __kernel_size_t, count, unsigned int, offset_lh, unsigned int, offset_hl)
312 _syscall4(long, readahead, unsigned int, fd, unsigned int, offset_lh, unsigned int, offset_hl, __kernel_size_t, count);
301 313
302#if __NR_stat64 314#if __NR_stat64
303 _syscall2(int,stat64, const char *, filename, struct kernelstat64 *, buf) 315 _syscall2(long, stat64 , const char *, filename, struct kernelstat64 *, buf)
304 _syscall2(int,lstat64, const char *, filename, struct kernelstat64 *, buf) 316 _syscall2(long, lstat64, const char *, filename, struct kernelstat64 *, buf)
305 _syscall2(int,fstat64, int, fd, struct kernelstat64 *, buf) 317 _syscall2(long, fstat64, int , fd , struct kernelstat64 *, buf)
306#elif __NR_stat 318#elif __NR_stat
307 _syscall2(int,stat, const char *, filename, struct kernelstat *, buf) 319 _syscall2(long, stat , const char *, filename, struct kernelstat *, buf)
308 _syscall2(int,lstat, const char *, filename, struct kernelstat *, buf) 320 _syscall2(long, lstat, const char *, filename, struct kernelstat *, buf)
309 _syscall2(int,fstat, int, fd, struct kernelstat *, buf) 321 _syscall2(long, fstat, int , fd , struct kernelstat *, buf)
310#else 322#else
311# error "neither stat64 nor stat defined" 323# error "neither stat64 nor stat defined"
312#endif 324#endif
313 325
314 _syscall1(int,unlink, char *, filename); 326 /* the following two calls might clobber errno */
315
316 sigprocmask (SIG_SETMASK, &fullsigset, 0); 327 sigprocmask (SIG_SETMASK, &fullsigset, 0);
317 prctl (PR_SET_PDEATHSIG, SIGKILL); 328 prctl (PR_SET_PDEATHSIG, SIGKILL);
318 329
319 /* then loop */ 330 /* then loop */
320 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 331 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
… …
322 req->thread = thr; 333 req->thread = thr;
323 errno = 0; /* strictly unnecessary */ 334 errno = 0; /* strictly unnecessary */
324 335
325 switch (req->type) 336 switch (req->type)
326 { 337 {
327#if __NR_pread64
328 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length,
329 LONG_LONG_PAIR (req->offset >> 32, req->offset & 0xffffffff)); break;
330 case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length,
331 LONG_LONG_PAIR (req->offset >> 32, req->offset & 0xffffffff)); break;
332#else
333 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 338 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, LOFF_ARG (req->offset)); break;
334 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 339 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, LOFF_ARG (req->offset)); break;
335#endif 340 case REQ_READAHEAD: req->result = readahead (req->fd, LOFF_ARG (req->offset), req->length); break;
341
336#if __NR_stat64 342#if __NR_stat64
337 struct kernelstat64 statdata; 343 struct kernelstat64 statdata;
338 case REQ_STAT: req->result = stat64 (req->dataptr, &statdata); COPY_STATDATA; break; 344 case REQ_STAT: req->result = stat64 (req->dataptr, &statdata); COPY_STATDATA; break;
339 case REQ_LSTAT: req->result = lstat64 (req->dataptr, &statdata); COPY_STATDATA; break; 345 case REQ_LSTAT: req->result = lstat64 (req->dataptr, &statdata); COPY_STATDATA; break;
340 case REQ_FSTAT: req->result = fstat64 (req->fd, &statdata); COPY_STATDATA; break; 346 case REQ_FSTAT: req->result = fstat64 (req->fd , &statdata); COPY_STATDATA; break;
341#else 347#else
342 struct kernelstat statdata; 348 struct kernelstat statdata;
343 case REQ_STAT: req->result = stat (req->dataptr, &statdata); COPY_STATDATA; break; 349 case REQ_STAT: req->result = stat (req->dataptr, &statdata); COPY_STATDATA; break;
344 case REQ_LSTAT: req->result = lstat (req->dataptr, &statdata); COPY_STATDATA; break; 350 case REQ_LSTAT: req->result = lstat (req->dataptr, &statdata); COPY_STATDATA; break;
345 case REQ_FSTAT: req->result = fstat (req->fd, &statdata); COPY_STATDATA; break; 351 case REQ_FSTAT: req->result = fstat (req->fd , &statdata); COPY_STATDATA; break;
346#endif 352#endif
353
347 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 354 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
348 case REQ_CLOSE: req->result = close (req->fd); break; 355 case REQ_CLOSE: req->result = close (req->fd); break;
349 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 356 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
357
358 case REQ_FSYNC: req->result = fsync (req->fd); break;
359 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
350 360
351 case REQ_QUIT: 361 case REQ_QUIT:
352 default:
353 write (respipe[1], (void *)&req, sizeof (req)); 362 write (respipe[1], (void *)&req, sizeof (req));
354 return 0; 363 return 0;
364
365 default:
366 req->result = ENOSYS;
367 break;
355 } 368 }
356 369
357 req->errorno = errno; 370 req->errorno = errno;
358 write (respipe[1], (void *)&req, sizeof (req)); 371 write (respipe[1], (void *)&req, sizeof (req));
359 } 372 }
… …
392void 405void
393max_parallel(nthreads) 406max_parallel(nthreads)
394 int nthreads 407 int nthreads
395 PROTOTYPE: $ 408 PROTOTYPE: $
396 CODE: 409 CODE:
410{
397 int cur = started; 411 int cur = started;
398 while (cur > nthreads) 412 while (cur > nthreads)
399 { 413 {
400 end_thread (); 414 end_thread ();
401 cur--; 415 cur--;
… …
404 while (started > nthreads) 418 while (started > nthreads)
405 { 419 {
406 poll_wait (); 420 poll_wait ();
407 poll_cb (aTHX); 421 poll_cb (aTHX);
408 } 422 }
423}
409 424
410void 425void
411aio_open(pathname,flags,mode,callback) 426aio_open(pathname,flags,mode,callback)
412 SV * pathname 427 SV * pathname
413 int flags 428 int flags
414 int mode 429 int mode
415 SV * callback 430 SV * callback
416 PROTOTYPE: $$$$ 431 PROTOTYPE: $$$$
417 CODE: 432 CODE:
433{
418 aio_req req; 434 aio_req req;
419 435
420 Newz (0, req, 1, aio_cb); 436 Newz (0, req, 1, aio_cb);
421 437
422 if (!req) 438 if (!req)
… …
428 req->fd = flags; 444 req->fd = flags;
429 req->mode = mode; 445 req->mode = mode;
430 req->callback = SvREFCNT_inc (callback); 446 req->callback = SvREFCNT_inc (callback);
431 447
432 send_req (req); 448 send_req (req);
449}
433 450
434void 451void
435aio_close(fh,callback) 452aio_close(fh,callback)
436 InputStream fh 453 InputStream fh
437 SV * callback 454 SV * callback
438 PROTOTYPE: $$ 455 PROTOTYPE: $$
456 ALIAS:
457 aio_close = REQ_CLOSE
458 aio_fsync = REQ_FSYNC
459 aio_fdatasync = REQ_FDATASYNC
439 CODE: 460 CODE:
461{
440 aio_req req; 462 aio_req req;
441 463
442 Newz (0, req, 1, aio_cb); 464 Newz (0, req, 1, aio_cb);
443 465
444 if (!req) 466 if (!req)
445 croak ("out of memory during aio_req allocation"); 467 croak ("out of memory during aio_req allocation");
446 468
447 req->type = REQ_CLOSE; 469 req->type = ix;
448 req->fd = PerlIO_fileno (fh); 470 req->fd = PerlIO_fileno (fh);
449 req->callback = SvREFCNT_inc (callback); 471 req->callback = SvREFCNT_inc (callback);
450 472
451 send_req (req); 473 send_req (req);
474}
452 475
453void 476void
454aio_read(fh,offset,length,data,dataoffset,callback) 477aio_read(fh,offset,length,data,dataoffset,callback)
455 InputStream fh 478 InputStream fh
456 UV offset 479 UV offset
… …
473 PROTOTYPE: $$$$$$ 496 PROTOTYPE: $$$$$$
474 CODE: 497 CODE:
475 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 498 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
476 499
477void 500void
501aio_readahead(fh,offset,length,callback)
502 InputStream fh
503 UV offset
504 IV length
505 SV * callback
506 PROTOTYPE: $$$$
507 CODE:
508{
509 aio_req req;
510
511 if (length < 0)
512 croak ("length must not be negative");
513
514 Newz (0, req, 1, aio_cb);
515
516 if (!req)
517 croak ("out of memory during aio_req allocation");
518
519 req->type = REQ_READAHEAD;
520 req->fd = PerlIO_fileno (fh);
521 req->offset = offset;
522 req->length = length;
523 req->callback = SvREFCNT_inc (callback);
524
525 send_req (req);
526}
527
528void
478aio_stat(fh_or_path,callback) 529aio_stat(fh_or_path,callback)
479 SV * fh_or_path 530 SV * fh_or_path
480 SV * callback 531 SV * callback
481 PROTOTYPE: $$ 532 PROTOTYPE: $$
482 ALIAS: 533 ALIAS:
483 aio_lstat = 1 534 aio_lstat = 1
484 CODE: 535 CODE:
536{
485 aio_req req; 537 aio_req req;
486 538
487 Newz (0, req, 1, aio_cb); 539 Newz (0, req, 1, aio_cb);
488 540
489 if (!req) 541 if (!req)
… …
507 } 559 }
508 560
509 req->callback = SvREFCNT_inc (callback); 561 req->callback = SvREFCNT_inc (callback);
510 562
511 send_req (req); 563 send_req (req);
564}
512 565
513void 566void
514aio_unlink(pathname,callback) 567aio_unlink(pathname,callback)
515 SV * pathname 568 SV * pathname
516 SV * callback 569 SV * callback
517 PROTOTYPE: $$ 570 PROTOTYPE: $$
518 CODE: 571 CODE:
572{
519 aio_req req; 573 aio_req req;
520 574
521 Newz (0, req, 1, aio_cb); 575 Newz (0, req, 1, aio_cb);
522 576
523 if (!req) 577 if (!req)
… …
527 req->data = newSVsv (pathname); 581 req->data = newSVsv (pathname);
528 req->dataptr = SvPV_nolen (req->data); 582 req->dataptr = SvPV_nolen (req->data);
529 req->callback = SvREFCNT_inc (callback); 583 req->callback = SvREFCNT_inc (callback);
530 584
531 send_req (req); 585 send_req (req);
586}
532 587
533int 588int
534poll_fileno() 589poll_fileno()
535 PROTOTYPE: 590 PROTOTYPE:
536 CODE: 591 CODE:

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