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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 1.28 by root, Sat Jul 9 04:02:54 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, REQ_READ, REQ_WRITE,
30 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK 30 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK
… …
48 int errorno; 48 int errorno;
49 SV *data, *callback; 49 SV *data, *callback;
50 void *dataptr; 50 void *dataptr;
51 STRLEN dataoffset; 51 STRLEN dataoffset;
52 52
53 struct stat64 *statdata; 53 Stat_t *statdata;
54} aio_cb; 54} aio_cb;
55 55
56typedef aio_cb *aio_req; 56typedef aio_cb *aio_req;
57 57
58static int started; 58static int started;
… …
69 aio_thread *thr; 69 aio_thread *thr;
70 70
71 New (0, thr, 1, aio_thread); 71 New (0, thr, 1, aio_thread);
72 72
73 if (clone (aio_proc, 73 if (clone (aio_proc,
74 &(thr->stack[STACKSIZE]), 74 &(thr->stack[STACKSIZE - 16]),
75 CLONE_VM|CLONE_FS|CLONE_FILES, 75 CLONE_VM|CLONE_FS|CLONE_FILES,
76 thr) >= 0) 76 thr) >= 0)
77 started++; 77 started++;
78 else 78 else
79 Safefree (thr); 79 Safefree (thr);
… …
95{ 95{
96 nreqs++; 96 nreqs++;
97 req->next = 0; 97 req->next = 0;
98 98
99 if (qe) 99 if (qe)
100 {
100 qe->next = req; 101 qe->next = req;
102 qe = req;
103 }
101 else 104 else
102 qe = qs = req; 105 qe = qs = req;
103 106
104 send_reqs (); 107 send_reqs ();
105} 108}
… …
161 req->callback = SvREFCNT_inc (callback); 164 req->callback = SvREFCNT_inc (callback);
162 165
163 send_req (req); 166 send_req (req);
164} 167}
165 168
169static void
170poll_wait ()
171{
172 fd_set rfd;
173 FD_ZERO(&rfd);
174 FD_SET(respipe[0], &rfd);
175
176 select (respipe[0] + 1, &rfd, 0, 0, 0);
177}
178
166static int 179static int
167poll_cb (pTHX) 180poll_cb (pTHX)
168{ 181{
169 dSP; 182 dSP;
170 int count = 0; 183 int count = 0;
171 aio_req req; 184 aio_req req;
172 185
173 while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 186 while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))
174 { 187 {
188 nreqs--;
189
175 if (req->type == REQ_QUIT) 190 if (req->type == REQ_QUIT)
176 { 191 {
177 Safefree (req->thread); 192 Safefree (req->thread);
178 started--; 193 started--;
179 } 194 }
… …
189 if (req->data) 204 if (req->data)
190 SvREFCNT_dec (req->data); 205 SvREFCNT_dec (req->data);
191 206
192 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) 207 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
193 { 208 {
194 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 209 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
195 PL_laststatval = req->result; 210 PL_laststatval = req->result;
196 PL_statcache.st_dev = req->statdata->st_dev; 211 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;
209 212
210 Safefree (req->statdata); 213 Safefree (req->statdata);
211 } 214 }
212 215
213 PUSHMARK (SP); 216 PUSHMARK (SP);
… …
218 221
219 if (req->callback) 222 if (req->callback)
220 SvREFCNT_dec (req->callback); 223 SvREFCNT_dec (req->callback);
221 224
222 errno = errorno; 225 errno = errorno;
223 nreqs--;
224 count++; 226 count++;
225 } 227 }
226 228
227 Safefree (req); 229 Safefree (req);
228 } 230 }
… …
235 237
236static sigset_t fullsigset; 238static sigset_t fullsigset;
237 239
238#undef errno 240#undef errno
239#include <asm/unistd.h> 241#include <asm/unistd.h>
242#include <linux/types.h>
240#include <sys/prctl.h> 243#include <sys/prctl.h>
244
245#if BYTE_ORDER == LITTLE_ENDIAN
246# define LONG_LONG_PAIR(HI, LO) LO, HI
247#elif BYTE_ORDER == BIG_ENDIAN
248# define LONG_LONG_PAIR(HI, LO) HI, LO
249#endif
250
251#if __alpha || __ia64 || __hppa || __v850__
252# define stat kernelstat
253# define stat64 kernelstat64
254# include <asm/stat.h>
255# undef stat
256# undef stat64
257#else
258# define kernelstat stat
259# define kernelstat64 stat64
260#endif
261
262#define COPY_STATDATA \
263 req->statdata->st_dev = statdata.st_dev; \
264 req->statdata->st_ino = statdata.st_ino; \
265 req->statdata->st_mode = statdata.st_mode; \
266 req->statdata->st_nlink = statdata.st_nlink; \
267 req->statdata->st_uid = statdata.st_uid; \
268 req->statdata->st_gid = statdata.st_gid; \
269 req->statdata->st_rdev = statdata.st_rdev; \
270 req->statdata->st_size = statdata.st_size; \
271 req->statdata->st_atime = statdata.st_atime; \
272 req->statdata->st_mtime = statdata.st_mtime; \
273 req->statdata->st_ctime = statdata.st_ctime; \
274 req->statdata->st_blksize = statdata.st_blksize; \
275 req->statdata->st_blocks = statdata.st_blocks; \
241 276
242static int 277static int
243aio_proc (void *thr_arg) 278aio_proc (void *thr_arg)
244{ 279{
245 aio_thread *thr = thr_arg; 280 aio_thread *thr = thr_arg;
246 aio_req req; 281 aio_req req;
247 int errno; 282 int errno;
248 283
249 /* this is very much x86 and kernel-specific :(:(:( */ 284 /* this is very much kernel-specific :(:(:( */
250 /* we rely on gcc's ability to create closures. */ 285 /* we rely on gcc's ability to create closures. */
251 _syscall3(int,read,int,fd,char *,buf,size_t,count) 286 _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) 287 _syscall3(__kernel_size_t,write,unsigned int,fd,char *,buf,__kernel_size_t,count)
253 288
254 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) 289 _syscall3(int,open,char *,pathname,int,flags,int,mode)
255 _syscall1(int,close,int,fd) 290 _syscall1(int,close,unsigned int,fd)
256 291
292#ifndef __NR_pread64
293# define __NR_pread64 __NR_pread
294# define __NR_pwrite64 __NR_write
295#endif
257 _syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi) 296 _syscall5(__kernel_ssize_t,pread64,unsigned int,fd,char *,buf,__kernel_size_t,count,unsigned int,offset_lh,unsigned int,offset_hl)
258 _syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi) 297 _syscall5(__kernel_ssize_t,pwrite64,unsigned int,fd,char *,buf,__kernel_size_t,count,unsigned int,offset_lh,unsigned int,offset_hl)
259 298
299#if __NR_stat64
260 _syscall2(int,stat64, const char *, filename, struct stat64 *, buf) 300 _syscall2(int,stat64, const char *, filename, struct kernelstat64 *, buf)
261 _syscall2(int,lstat64, const char *, filename, struct stat64 *, buf) 301 _syscall2(int,lstat64, const char *, filename, struct kernelstat64 *, buf)
262 _syscall2(int,fstat64, int, fd, struct stat64 *, buf) 302 _syscall2(int,fstat64, int, fd, struct kernelstat64 *, buf)
303#elif __NR_stat
304 _syscall2(int,stat, const char *, filename, struct kernelstat *, buf)
305 _syscall2(int,lstat, const char *, filename, struct kernelstat *, buf)
306 _syscall2(int,fstat, int, fd, struct kernelstat *, buf)
307#else
308# error "neither stat64 nor stat defined"
309#endif
263 310
264 _syscall1(int,unlink, char *, filename); 311 _syscall1(int,unlink, char *, filename);
265 312
266 sigprocmask (SIG_SETMASK, &fullsigset, 0); 313 sigprocmask (SIG_SETMASK, &fullsigset, 0);
267 prctl (PR_SET_PDEATHSIG, SIGKILL); 314 prctl (PR_SET_PDEATHSIG, SIGKILL);
… …
272 req->thread = thr; 319 req->thread = thr;
273 errno = 0; /* strictly unnecessary */ 320 errno = 0; /* strictly unnecessary */
274 321
275 switch (req->type) 322 switch (req->type)
276 { 323 {
277 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break; 324 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length,
325 LONG_LONG_PAIR (req->offset >> 32, req->offset & 0xffffffff)); break;
278 case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break; 326 case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length,
327 LONG_LONG_PAIR (req->offset >> 32, req->offset & 0xffffffff)); break;
328#if __NR_stat64
329 struct kernelstat64 statdata;
330 case REQ_STAT: req->result = stat64 (req->dataptr, &statdata); COPY_STATDATA; break;
331 case REQ_LSTAT: req->result = lstat64 (req->dataptr, &statdata); COPY_STATDATA; break;
332 case REQ_FSTAT: req->result = fstat64 (req->fd, &statdata); COPY_STATDATA; break;
333#else
334 struct kernelstat statdata;
335 case REQ_STAT: req->result = stat (req->dataptr, &statdata); COPY_STATDATA; break;
336 case REQ_LSTAT: req->result = lstat (req->dataptr, &statdata); COPY_STATDATA; break;
337 case REQ_FSTAT: req->result = fstat (req->fd, &statdata); COPY_STATDATA; break;
338#endif
279 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 339 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
280 case REQ_CLOSE: req->result = close (req->fd); break; 340 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; 341 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
285 342
286 case REQ_QUIT: 343 case REQ_QUIT:
287 default: 344 default:
288 write (respipe[1], (void *)&req, sizeof (req)); 345 write (respipe[1], (void *)&req, sizeof (req));
… …
336 cur--; 393 cur--;
337 } 394 }
338 395
339 while (started > nthreads) 396 while (started > nthreads)
340 { 397 {
341 fd_set rfd; 398 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); 399 poll_cb (aTHX);
347 } 400 }
348 401
349void 402void
350aio_open(pathname,flags,mode,callback) 403aio_open(pathname,flags,mode,callback)
… …
426 Newz (0, req, 1, aio_cb); 479 Newz (0, req, 1, aio_cb);
427 480
428 if (!req) 481 if (!req)
429 croak ("out of memory during aio_req allocation"); 482 croak ("out of memory during aio_req allocation");
430 483
431 New (0, req->statdata, 1, struct stat64); 484 New (0, req->statdata, 1, Stat_t);
432 485
433 if (!req->statdata) 486 if (!req->statdata)
434 croak ("out of memory during aio_req->statdata allocation"); 487 croak ("out of memory during aio_req->statdata allocation");
435 488
436 if (SvPOK (fh_or_path)) 489 if (SvPOK (fh_or_path))
… …
483 CODE: 536 CODE:
484 RETVAL = poll_cb (aTHX); 537 RETVAL = poll_cb (aTHX);
485 OUTPUT: 538 OUTPUT:
486 RETVAL 539 RETVAL
487 540
541void
542poll_wait()
543 PROTOTYPE:
544 CODE:
545 poll_wait ();
546
488int 547int
489nreqs() 548nreqs()
490 PROTOTYPE: 549 PROTOTYPE:
491 CODE: 550 CODE:
492 RETVAL = nreqs; 551 RETVAL = nreqs;

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