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Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.11 by root, Mon Oct 8 12:58:41 2001 UTC vs.
Revision 1.16 by root, Wed May 5 10:13:30 2004 UTC

1#include "EXTERN.h" 1#include "EXTERN.h"
2#include "perl.h" 2#include "perl.h"
3#include "XSUB.h" 3#include "XSUB.h"
4 4
5#include <sys/types.h> 5#include <sys/types.h>
6#include <sys/stat.h>
6#include <unistd.h> 7#include <unistd.h>
7#include <fcntl.h> 8#include <fcntl.h>
8#include <signal.h> 9#include <signal.h>
9#include <sched.h> 10#include <sched.h>
10 11
12typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */
13typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
14typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
15
16#ifndef __NR_pread64
17# define __NR_pread64 __NR_pread
18#endif
19#ifndef __NR_pwrite64
20# define __NR_pwrite64 __NR_pwrite
21#endif
22
11#define STACKSIZE 1024 /* yeah */ 23#define STACKSIZE 1024 /* yeah */
12 24
13enum { REQ_QUIT, REQ_READ, REQ_WRITE, REQ_OPEN, REQ_CLOSE }; 25enum { REQ_QUIT, REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, REQ_STAT, REQ_LSTAT, REQ_FSTAT};
14 26
15typedef struct { 27typedef struct {
16 char stack[STACKSIZE]; 28 char stack[STACKSIZE];
17} aio_thread; 29} aio_thread;
18 30
19typedef struct { 31typedef struct {
20 int type; 32 int type;
21 aio_thread *thread; 33 aio_thread *thread;
22 34
23/* read/write */
24 int fd; 35 int fd;
25 off_t offset; 36 off_t offset;
26 size_t length; 37 size_t length;
27 ssize_t result; 38 ssize_t result;
28 mode_t mode; /* open */ 39 mode_t mode; /* open */
29 int errorno; 40 int errorno;
30 SV *data, *callback; 41 SV *data, *callback;
31 void *dataptr; 42 void *dataptr;
32 STRLEN dataoffset; 43 STRLEN dataoffset;
44
45 struct stat64 *statdata;
33} aio_cb; 46} aio_cb;
34 47
35typedef aio_cb *aio_req; 48typedef aio_cb *aio_req;
36 49
37static int started; 50static int started;
… …
77 SV *data, STRLEN dataoffset, SV*callback) 90 SV *data, STRLEN dataoffset, SV*callback)
78{ 91{
79 aio_req req; 92 aio_req req;
80 STRLEN svlen; 93 STRLEN svlen;
81 char *svptr = SvPV (data, svlen); 94 char *svptr = SvPV (data, svlen);
95
96 SvUPGRADE (data, SVt_PV);
97 SvPOK_on (data);
82 98
83 if (dataoffset < 0) 99 if (dataoffset < 0)
84 dataoffset += svlen; 100 dataoffset += svlen;
85 101
86 if (dataoffset < 0 || dataoffset > svlen) 102 if (dataoffset < 0 || dataoffset > svlen)
… …
99 } 115 }
100 116
101 if (length < 0) 117 if (length < 0)
102 croak ("length must not be negative"); 118 croak ("length must not be negative");
103 119
104 New (0, req, 1, aio_cb); 120 Newz (0, req, 1, aio_cb);
105 121
106 if (!req) 122 if (!req)
107 croak ("out of memory during aio_req allocation"); 123 croak ("out of memory during aio_req allocation");
108 124
109 req->type = dowrite ? REQ_WRITE : REQ_READ; 125 req->type = dowrite ? REQ_WRITE : REQ_READ;
… …
138 154
139 if (req->type == REQ_READ) 155 if (req->type == REQ_READ)
140 SvCUR_set (req->data, req->dataoffset 156 SvCUR_set (req->data, req->dataoffset
141 + req->result > 0 ? req->result : 0); 157 + req->result > 0 ? req->result : 0);
142 158
159 if (req->data)
160 SvREFCNT_dec (req->data);
161
162 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
163 {
164 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
165 PL_laststatval = req->result;
166 PL_statcache.st_dev = req->statdata->st_dev;
167 PL_statcache.st_ino = req->statdata->st_ino;
168 PL_statcache.st_mode = req->statdata->st_mode;
169 PL_statcache.st_nlink = req->statdata->st_nlink;
170 PL_statcache.st_uid = req->statdata->st_uid;
171 PL_statcache.st_gid = req->statdata->st_gid;
172 PL_statcache.st_rdev = req->statdata->st_rdev;
173 PL_statcache.st_size = req->statdata->st_size;
174 PL_statcache.st_atime = req->statdata->st_atime;
175 PL_statcache.st_mtime = req->statdata->st_mtime;
176 PL_statcache.st_ctime = req->statdata->st_ctime;
177 PL_statcache.st_blksize = req->statdata->st_blksize;
178 PL_statcache.st_blocks = req->statdata->st_blocks;
179
180 Safefree (req->statdata);
181 }
182
143 PUSHMARK (SP); 183 PUSHMARK (SP);
144 XPUSHs (sv_2mortal (newSViv (req->result))); 184 XPUSHs (sv_2mortal (newSViv (req->result)));
145 PUTBACK; 185 PUTBACK;
146 call_sv (req->callback, G_VOID); 186 call_sv (req->callback, G_VOID);
147 SPAGAIN; 187 SPAGAIN;
148 188
149 SvREFCNT_dec (req->data); 189 if (req->callback)
150 SvREFCNT_dec (req->callback); 190 SvREFCNT_dec (req->callback);
151 191
152 errno = errorno; 192 errno = errorno;
153 nreqs--; 193 nreqs--;
154 count++; 194 count++;
155 } 195 }
… …
170{ 210{
171 aio_thread *thr = thr_arg; 211 aio_thread *thr = thr_arg;
172 aio_req req; 212 aio_req req;
173 int errno; 213 int errno;
174 214
215 /* this is very much x86 and kernel-specific :(:(:( */
175 /* we rely on gcc's ability to create closures. */ 216 /* we rely on gcc's ability to create closures. */
176 _syscall3(int,lseek,int,fd,off_t,offset,int,whence)
177 _syscall3(int,read,int,fd,char *,buf,off_t,count) 217 _syscall3(int,read,int,fd,char *,buf,size_t,count)
178 _syscall3(int,write,int,fd,char *,buf,off_t,count) 218 _syscall3(int,write,int,fd,char *,buf,size_t,count)
219
179 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) 220 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
180 _syscall1(int,close,int,fd) 221 _syscall1(int,close,int,fd)
222
223 _syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
224 _syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
225
226 _syscall2(int,stat64, const char *, filename, struct stat64 *, buf)
227 _syscall2(int,lstat64, const char *, filename, struct stat64 *, buf)
228 _syscall2(int,fstat64, int, fd, struct stat64 *, buf)
181 229
182 sigprocmask (SIG_SETMASK, &fullsigset, 0); 230 sigprocmask (SIG_SETMASK, &fullsigset, 0);
183 231
184 /* then loop */ 232 /* then loop */
185 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 233 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
186 { 234 {
187 req->thread = thr; 235 req->thread = thr;
188 errno = 0; 236 errno = 0; /* strictly unnecessary */
189 237
190 if (req->type == REQ_READ || req->type == REQ_WRITE)
191 {
192 if (lseek (req->fd, req->offset, SEEK_SET) == req->offset)
193 {
194 if (req->type == REQ_READ) 238 if (req->type == REQ_READ)
195 req->result = read (req->fd, req->dataptr, req->length); 239 req->result = pread64 (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32);
196 else 240 else if (req->type == REQ_WRITE)
197 req->result = write(req->fd, req->dataptr, req->length); 241 req->result = pwrite64(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32);
198 }
199 }
200 else if (req->type == REQ_OPEN) 242 else if (req->type == REQ_OPEN)
201 {
202 req->result = open (req->dataptr, req->fd, req->mode); 243 req->result = open (req->dataptr, req->fd, req->mode);
203 }
204 else if (req->type == REQ_CLOSE) 244 else if (req->type == REQ_CLOSE)
205 {
206 req->result = close (req->fd); 245 req->result = close (req->fd);
207 } 246 else if (req->type == REQ_STAT)
247 req->result = stat64 (req->dataptr, req->statdata);
248 else if (req->type == REQ_LSTAT)
249 req->result = lstat64 (req->dataptr, req->statdata);
250 else if (req->type == REQ_FSTAT)
251 req->result = fstat64 (req->fd, req->statdata);
208 else 252 else
209 { 253 {
210 write (respipe[1], (void *)&req, sizeof (req)); 254 write (respipe[1], (void *)&req, sizeof (req));
211 break; 255 break;
212 } 256 }
… …
253 { 297 {
254 end_thread (); 298 end_thread ();
255 cur--; 299 cur--;
256 } 300 }
257 301
258 poll_cb ();
259 while (started > nthreads) 302 while (started > nthreads)
260 { 303 {
261 sched_yield (); 304 fd_set rfd;
305 FD_ZERO(&rfd);
306 FD_SET(respipe[0], &rfd);
307
308 select (respipe[0] + 1, &rfd, 0, 0, 0);
262 poll_cb (); 309 poll_cb ();
263 } 310 }
264 311
265void 312void
266aio_read(fh,offset,length,data,dataoffset,callback)
267 PerlIO * fh
268 UV offset
269 STRLEN length
270 SV * data
271 STRLEN dataoffset
272 SV * callback
273 PROTOTYPE: $$$$$$
274 ALIAS:
275 aio_write = 1
276 CODE:
277 SvUPGRADE (data, SVt_PV);
278 SvPOK_on (data);
279 read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
280
281void
282aio_open(pathname,flags,mode,callback) 313aio_open(pathname,flags,mode,callback)
283 char * pathname 314 SV * pathname
284 int flags 315 int flags
285 int mode 316 int mode
286 SV * callback 317 SV * callback
287 PROTOTYPE: $$$$ 318 PROTOTYPE: $$$$
288 CODE: 319 CODE:
289 aio_req req; 320 aio_req req;
290 321
291 New (0, req, 1, aio_cb); 322 Newz (0, req, 1, aio_cb);
292 323
293 if (!req) 324 if (!req)
294 croak ("out of memory during aio_req allocation"); 325 croak ("out of memory during aio_req allocation");
295 326
296 req->type = REQ_OPEN; 327 req->type = REQ_OPEN;
297 req->dataptr = pathname; 328 req->data = newSVsv (pathname);
329 req->dataptr = SvPV_nolen (req->data);
298 req->fd = flags; 330 req->fd = flags;
299 req->mode = mode; 331 req->mode = mode;
300 req->callback = SvREFCNT_inc (callback); 332 req->callback = SvREFCNT_inc (callback);
301 333
302 send_req (req); 334 send_req (req);
303 335
304void 336void
305aio_close(fh,callback) 337aio_close(fh,callback)
306 PerlIO * fh 338 InputStream fh
307 SV * callback 339 SV * callback
308 PROTOTYPE: $ 340 PROTOTYPE: $$
309 CODE: 341 CODE:
310 aio_req req; 342 aio_req req;
311 343
312 New (0, req, 1, aio_cb); 344 Newz (0, req, 1, aio_cb);
313 345
314 if (!req) 346 if (!req)
315 croak ("out of memory during aio_req allocation"); 347 croak ("out of memory during aio_req allocation");
316 348
317 req->type = REQ_CLOSE; 349 req->type = REQ_CLOSE;
318 req->fd = PerlIO_fileno (fh); 350 req->fd = PerlIO_fileno (fh);
319 req->callback = SvREFCNT_inc (callback); 351 req->callback = SvREFCNT_inc (callback);
320 352
321 send_req (req); 353 send_req (req);
322 354
355void
356aio_read(fh,offset,length,data,dataoffset,callback)
357 InputStream fh
358 UV offset
359 IV length
360 SV * data
361 IV dataoffset
362 SV * callback
363 PROTOTYPE: $$$$$$
364 CODE:
365 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
366
367void
368aio_write(fh,offset,length,data,dataoffset,callback)
369 OutputStream fh
370 UV offset
371 IV length
372 SV * data
373 IV dataoffset
374 SV * callback
375 PROTOTYPE: $$$$$$
376 CODE:
377 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
378
379void
380aio_stat(fh_or_path,callback)
381 SV * fh_or_path
382 SV * callback
383 PROTOTYPE: $$
384 ALIAS:
385 aio_lstat = 1
386 CODE:
387 aio_req req;
388
389 Newz (0, req, 1, aio_cb);
390
391 if (!req)
392 croak ("out of memory during aio_req allocation");
393
394 New (0, req->statdata, 1, struct stat64);
395
396 if (!req->statdata)
397 croak ("out of memory during aio_req->statdata allocation");
398
399 if (SvPOK (fh_or_path))
400 {
401 req->type = ix ? REQ_LSTAT : REQ_STAT;
402 req->data = newSVsv (fh_or_path);
403 req->dataptr = SvPV_nolen (req->data);
404 }
405 else
406 {
407 req->type = REQ_FSTAT;
408 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
409 }
410
411 req->callback = SvREFCNT_inc (callback);
412
413 send_req (req);
414
323int 415int
324poll_fileno() 416poll_fileno()
325 PROTOTYPE: 417 PROTOTYPE:
326 CODE: 418 CODE:
327 RETVAL = respipe[0]; 419 RETVAL = respipe[0];

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