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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 1.26 by root, Thu Jul 7 23:17:23 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// 128 seems to be enough most everywhere. alpha needs 256.
19# define __NR_pread64 __NR_pread 20#define STACKSIZE (256 * sizeof (long))
20#endif
21#ifndef __NR_pwrite64
22# define __NR_pwrite64 __NR_pwrite
23#endif
24
25#define STACKSIZE 1024 /* yeah */
26 21
27enum { 22enum {
28 REQ_QUIT, 23 REQ_QUIT,
29 REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, 24 REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE,
30 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK 25 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK
… …
48 int errorno; 43 int errorno;
49 SV *data, *callback; 44 SV *data, *callback;
50 void *dataptr; 45 void *dataptr;
51 STRLEN dataoffset; 46 STRLEN dataoffset;
52 47
53 struct stat64 *statdata; 48 Stat_t *statdata;
54} aio_cb; 49} aio_cb;
55 50
56typedef aio_cb *aio_req; 51typedef aio_cb *aio_req;
57 52
58static int started; 53static int started;
… …
69 aio_thread *thr; 64 aio_thread *thr;
70 65
71 New (0, thr, 1, aio_thread); 66 New (0, thr, 1, aio_thread);
72 67
73 if (clone (aio_proc, 68 if (clone (aio_proc,
74 &(thr->stack[STACKSIZE]), 69 &(thr->stack[STACKSIZE - sizeof (long)]),
75 CLONE_VM|CLONE_FS|CLONE_FILES, 70 CLONE_VM|CLONE_FS|CLONE_FILES,
76 thr) >= 0) 71 thr) >= 0)
77 started++; 72 started++;
78 else 73 else
79 Safefree (thr); 74 Safefree (thr);
… …
95{ 90{
96 nreqs++; 91 nreqs++;
97 req->next = 0; 92 req->next = 0;
98 93
99 if (qe) 94 if (qe)
95 {
100 qe->next = req; 96 qe->next = req;
97 qe = req;
98 }
101 else 99 else
102 qe = qs = req; 100 qe = qs = req;
103 101
104 send_reqs (); 102 send_reqs ();
105} 103}
… …
161 req->callback = SvREFCNT_inc (callback); 159 req->callback = SvREFCNT_inc (callback);
162 160
163 send_req (req); 161 send_req (req);
164} 162}
165 163
164static void
165poll_wait ()
166{
167 fd_set rfd;
168 FD_ZERO(&rfd);
169 FD_SET(respipe[0], &rfd);
170
171 select (respipe[0] + 1, &rfd, 0, 0, 0);
172}
173
166static int 174static int
167poll_cb (pTHX) 175poll_cb (pTHX)
168{ 176{
169 dSP; 177 dSP;
170 int count = 0; 178 int count = 0;
171 aio_req req; 179 aio_req req;
172 180
173 while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 181 while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))
174 { 182 {
183 nreqs--;
184
175 if (req->type == REQ_QUIT) 185 if (req->type == REQ_QUIT)
176 { 186 {
177 Safefree (req->thread); 187 Safefree (req->thread);
178 started--; 188 started--;
179 } 189 }
… …
189 if (req->data) 199 if (req->data)
190 SvREFCNT_dec (req->data); 200 SvREFCNT_dec (req->data);
191 201
192 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) 202 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
193 { 203 {
194 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 204 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
195 PL_laststatval = req->result; 205 PL_laststatval = req->result;
196 PL_statcache.st_dev = req->statdata->st_dev; 206 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;
209 207
210 Safefree (req->statdata); 208 Safefree (req->statdata);
211 } 209 }
212 210
213 PUSHMARK (SP); 211 PUSHMARK (SP);
… …
218 216
219 if (req->callback) 217 if (req->callback)
220 SvREFCNT_dec (req->callback); 218 SvREFCNT_dec (req->callback);
221 219
222 errno = errorno; 220 errno = errorno;
223 nreqs--;
224 count++; 221 count++;
225 } 222 }
226 223
227 Safefree (req); 224 Safefree (req);
228 } 225 }
… …
237 234
238#undef errno 235#undef errno
239#include <asm/unistd.h> 236#include <asm/unistd.h>
240#include <sys/prctl.h> 237#include <sys/prctl.h>
241 238
239#if BYTE_ORDER == LITTLE_ENDIAN
240# define LONG_LONG_PAIR(HI, LO) LO, HI
241#elif BYTE_ORDER == BIG_ENDIAN
242# define LONG_LONG_PAIR(HI, LO) HI, LO
243#endif
244
245#if __alpha || __ia64 || __hppa || __v850__
246# define stat kernelstat
247# define stat64 kernelstat64
248# include <asm/stat.h>
249# undef stat
250# undef stat64
251#else
252# define kernelstat stat
253# define kernelstat64 stat64
254#endif
255
256#define COPY_STATDATA \
257 req->statdata->st_dev = statdata.st_dev; \
258 req->statdata->st_ino = statdata.st_ino; \
259 req->statdata->st_mode = statdata.st_mode; \
260 req->statdata->st_nlink = statdata.st_nlink; \
261 req->statdata->st_uid = statdata.st_uid; \
262 req->statdata->st_gid = statdata.st_gid; \
263 req->statdata->st_rdev = statdata.st_rdev; \
264 req->statdata->st_size = statdata.st_size; \
265 req->statdata->st_atime = statdata.st_atime; \
266 req->statdata->st_mtime = statdata.st_mtime; \
267 req->statdata->st_ctime = statdata.st_ctime; \
268 req->statdata->st_blksize = statdata.st_blksize; \
269 req->statdata->st_blocks = statdata.st_blocks; \
270
242static int 271static int
243aio_proc (void *thr_arg) 272aio_proc (void *thr_arg)
244{ 273{
245 aio_thread *thr = thr_arg; 274 aio_thread *thr = thr_arg;
246 aio_req req; 275 aio_req req;
247 int errno; 276 int errno;
248 277
249 /* this is very much x86 and kernel-specific :(:(:( */ 278 /* this is very much kernel-specific :(:(:( */
250 /* we rely on gcc's ability to create closures. */ 279 /* we rely on gcc's ability to create closures. */
251 _syscall3(int,read,int,fd,char *,buf,size_t,count) 280 _syscall3(int,read,int,fd,char *,buf,size_t,count)
252 _syscall3(int,write,int,fd,char *,buf,size_t,count) 281 _syscall3(int,write,int,fd,char *,buf,size_t,count)
253 282
254 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) 283 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
255 _syscall1(int,close,int,fd) 284 _syscall1(int,close,int,fd)
256 285
286#if __NR_pread64
257 _syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi) 287 _syscall5(int,pread64,int,fd,char *,buf,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) 288 _syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lh,unsigned int,offset_hl)
289#elif __NR_pread
290 _syscall4(int,pread,int,fd,char *,buf,size_t,count,offset_t,offset)
291 _syscall4(int,pwrite,int,fd,char *,buf,size_t,count,offset_t,offset)
292#else
293# error "neither pread nor pread64 defined"
294#endif
259 295
296
297#if __NR_stat64
260 _syscall2(int,stat64, const char *, filename, struct stat64 *, buf) 298 _syscall2(int,stat64, const char *, filename, struct kernelstat64 *, buf)
261 _syscall2(int,lstat64, const char *, filename, struct stat64 *, buf) 299 _syscall2(int,lstat64, const char *, filename, struct kernelstat64 *, buf)
262 _syscall2(int,fstat64, int, fd, struct stat64 *, buf) 300 _syscall2(int,fstat64, int, fd, struct kernelstat64 *, buf)
301#elif __NR_stat
302 _syscall2(int,stat, const char *, filename, struct kernelstat *, buf)
303 _syscall2(int,lstat, const char *, filename, struct kernelstat *, buf)
304 _syscall2(int,fstat, int, fd, struct kernelstat *, buf)
305#else
306# error "neither stat64 nor stat defined"
307#endif
263 308
264 _syscall1(int,unlink, char *, filename); 309 _syscall1(int,unlink, char *, filename);
265 310
266 sigprocmask (SIG_SETMASK, &fullsigset, 0); 311 sigprocmask (SIG_SETMASK, &fullsigset, 0);
267 prctl (PR_SET_PDEATHSIG, SIGKILL); 312 prctl (PR_SET_PDEATHSIG, SIGKILL);
… …
272 req->thread = thr; 317 req->thread = thr;
273 errno = 0; /* strictly unnecessary */ 318 errno = 0; /* strictly unnecessary */
274 319
275 switch (req->type) 320 switch (req->type)
276 { 321 {
322#if __NR_pread64
323 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length,
324 LONG_LONG_PAIR (req->offset >> 32, req->offset & 0xffffffff)); break;
325 case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length,
326 LONG_LONG_PAIR (req->offset >> 32, req->offset & 0xffffffff)); break;
327#else
277 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break; 328 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
278 case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break; 329 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
330#endif
331#if __NR_stat64
332 struct kernelstat64 statdata;
333 case REQ_STAT: req->result = stat64 (req->dataptr, &statdata); COPY_STATDATA; break;
334 case REQ_LSTAT: req->result = lstat64 (req->dataptr, &statdata); COPY_STATDATA; break;
335 case REQ_FSTAT: req->result = fstat64 (req->fd, &statdata); COPY_STATDATA; break;
336#else
337 struct kernelstat statdata;
338 case REQ_STAT: req->result = stat (req->dataptr, &statdata); COPY_STATDATA; break;
339 case REQ_LSTAT: req->result = lstat (req->dataptr, &statdata); COPY_STATDATA; break;
340 case REQ_FSTAT: req->result = fstat (req->fd, &statdata); COPY_STATDATA; break;
341#endif
279 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 342 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
280 case REQ_CLOSE: req->result = close (req->fd); break; 343 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; 344 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
285 345
286 case REQ_QUIT: 346 case REQ_QUIT:
287 default: 347 default:
288 write (respipe[1], (void *)&req, sizeof (req)); 348 write (respipe[1], (void *)&req, sizeof (req));
… …
336 cur--; 396 cur--;
337 } 397 }
338 398
339 while (started > nthreads) 399 while (started > nthreads)
340 { 400 {
341 fd_set rfd; 401 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); 402 poll_cb (aTHX);
347 } 403 }
348 404
349void 405void
350aio_open(pathname,flags,mode,callback) 406aio_open(pathname,flags,mode,callback)
… …
426 Newz (0, req, 1, aio_cb); 482 Newz (0, req, 1, aio_cb);
427 483
428 if (!req) 484 if (!req)
429 croak ("out of memory during aio_req allocation"); 485 croak ("out of memory during aio_req allocation");
430 486
431 New (0, req->statdata, 1, struct stat64); 487 New (0, req->statdata, 1, Stat_t);
432 488
433 if (!req->statdata) 489 if (!req->statdata)
434 croak ("out of memory during aio_req->statdata allocation"); 490 croak ("out of memory during aio_req->statdata allocation");
435 491
436 if (SvPOK (fh_or_path)) 492 if (SvPOK (fh_or_path))
… …
483 CODE: 539 CODE:
484 RETVAL = poll_cb (aTHX); 540 RETVAL = poll_cb (aTHX);
485 OUTPUT: 541 OUTPUT:
486 RETVAL 542 RETVAL
487 543
544void
545poll_wait()
546 PROTOTYPE:
547 CODE:
548 poll_wait ();
549
488int 550int
489nreqs() 551nreqs()
490 PROTOTYPE: 552 PROTOTYPE:
491 CODE: 553 CODE:
492 RETVAL = nreqs; 554 RETVAL = nreqs;

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