ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Linux-AIO/AIO.xs
(Generate patch)

Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.12 by root, Tue Dec 25 02:33:48 2001 UTC vs.
Revision 1.15 by root, Sat May 18 21:48:36 2002 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 ;) */
11typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 14typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
12 15
13#define STACKSIZE 1024 /* yeah */ 16#define STACKSIZE 1024 /* yeah */
14 17
15enum { REQ_QUIT, REQ_READ, REQ_WRITE, REQ_OPEN, REQ_CLOSE }; 18enum { REQ_QUIT, REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, REQ_STAT, REQ_LSTAT, REQ_FSTAT};
16 19
17typedef struct { 20typedef struct {
18 char stack[STACKSIZE]; 21 char stack[STACKSIZE];
19} aio_thread; 22} aio_thread;
20 23
21typedef struct { 24typedef struct {
22 int type; 25 int type;
23 aio_thread *thread; 26 aio_thread *thread;
24 27
25/* read/write */
26 int fd; 28 int fd;
27 off_t offset; 29 off_t offset;
28 size_t length; 30 size_t length;
29 ssize_t result; 31 ssize_t result;
30 mode_t mode; /* open */ 32 mode_t mode; /* open */
31 int errorno; 33 int errorno;
32 SV *data, *callback; 34 SV *data, *callback;
33 void *dataptr; 35 void *dataptr;
34 STRLEN dataoffset; 36 STRLEN dataoffset;
37
38 struct stat64 *statdata;
35} aio_cb; 39} aio_cb;
36 40
37typedef aio_cb *aio_req; 41typedef aio_cb *aio_req;
38 42
39static int started; 43static int started;
… …
79 SV *data, STRLEN dataoffset, SV*callback) 83 SV *data, STRLEN dataoffset, SV*callback)
80{ 84{
81 aio_req req; 85 aio_req req;
82 STRLEN svlen; 86 STRLEN svlen;
83 char *svptr = SvPV (data, svlen); 87 char *svptr = SvPV (data, svlen);
88
89 SvUPGRADE (data, SVt_PV);
90 SvPOK_on (data);
84 91
85 if (dataoffset < 0) 92 if (dataoffset < 0)
86 dataoffset += svlen; 93 dataoffset += svlen;
87 94
88 if (dataoffset < 0 || dataoffset > svlen) 95 if (dataoffset < 0 || dataoffset > svlen)
… …
101 } 108 }
102 109
103 if (length < 0) 110 if (length < 0)
104 croak ("length must not be negative"); 111 croak ("length must not be negative");
105 112
106 New (0, req, 1, aio_cb); 113 Newz (0, req, 1, aio_cb);
107 114
108 if (!req) 115 if (!req)
109 croak ("out of memory during aio_req allocation"); 116 croak ("out of memory during aio_req allocation");
110 117
111 req->type = dowrite ? REQ_WRITE : REQ_READ; 118 req->type = dowrite ? REQ_WRITE : REQ_READ;
… …
140 147
141 if (req->type == REQ_READ) 148 if (req->type == REQ_READ)
142 SvCUR_set (req->data, req->dataoffset 149 SvCUR_set (req->data, req->dataoffset
143 + req->result > 0 ? req->result : 0); 150 + req->result > 0 ? req->result : 0);
144 151
152 if (req->data)
153 SvREFCNT_dec (req->data);
154
155 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
156 {
157 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
158 PL_laststatval = req->result;
159 PL_statcache.st_dev = req->statdata->st_dev;
160 PL_statcache.st_ino = req->statdata->st_ino;
161 PL_statcache.st_mode = req->statdata->st_mode;
162 PL_statcache.st_nlink = req->statdata->st_nlink;
163 PL_statcache.st_uid = req->statdata->st_uid;
164 PL_statcache.st_gid = req->statdata->st_gid;
165 PL_statcache.st_rdev = req->statdata->st_rdev;
166 PL_statcache.st_size = req->statdata->st_size;
167 PL_statcache.st_atime = req->statdata->st_atime;
168 PL_statcache.st_mtime = req->statdata->st_mtime;
169 PL_statcache.st_ctime = req->statdata->st_ctime;
170 PL_statcache.st_blksize = req->statdata->st_blksize;
171 PL_statcache.st_blocks = req->statdata->st_blocks;
172
173 Safefree (req->statdata);
174 }
175
145 PUSHMARK (SP); 176 PUSHMARK (SP);
146 XPUSHs (sv_2mortal (newSViv (req->result))); 177 XPUSHs (sv_2mortal (newSViv (req->result)));
147 PUTBACK; 178 PUTBACK;
148 call_sv (req->callback, G_VOID); 179 call_sv (req->callback, G_VOID);
149 SPAGAIN; 180 SPAGAIN;
150 181
151 SvREFCNT_dec (req->data); 182 if (req->callback)
152 SvREFCNT_dec (req->callback); 183 SvREFCNT_dec (req->callback);
153 184
154 errno = errorno; 185 errno = errorno;
155 nreqs--; 186 nreqs--;
156 count++; 187 count++;
157 } 188 }
… …
172{ 203{
173 aio_thread *thr = thr_arg; 204 aio_thread *thr = thr_arg;
174 aio_req req; 205 aio_req req;
175 int errno; 206 int errno;
176 207
208 /* this is very much x86 and kernel-specific :(:(:( */
177 /* we rely on gcc's ability to create closures. */ 209 /* we rely on gcc's ability to create closures. */
178 _syscall3(int,lseek,int,fd,off_t,offset,int,whence)
179 _syscall3(int,read,int,fd,char *,buf,off_t,count) 210 _syscall3(int,read,int,fd,char *,buf,size_t,count)
180 _syscall3(int,write,int,fd,char *,buf,off_t,count) 211 _syscall3(int,write,int,fd,char *,buf,size_t,count)
212
181 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) 213 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
182 _syscall1(int,close,int,fd) 214 _syscall1(int,close,int,fd)
215
216 _syscall5(int,pread,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
217 _syscall5(int,pwrite,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
218
219 _syscall2(int,stat64, const char *, filename, struct stat64 *, buf)
220 _syscall2(int,lstat64, const char *, filename, struct stat64 *, buf)
221 _syscall2(int,fstat64, int, fd, struct stat64 *, buf)
183 222
184 sigprocmask (SIG_SETMASK, &fullsigset, 0); 223 sigprocmask (SIG_SETMASK, &fullsigset, 0);
185 224
186 /* then loop */ 225 /* then loop */
187 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 226 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
188 { 227 {
189 req->thread = thr; 228 req->thread = thr;
190 errno = 0; 229 errno = 0; /* strictly unnecessary */
191 230
192 if (req->type == REQ_READ || req->type == REQ_WRITE)
193 {
194 if (lseek (req->fd, req->offset, SEEK_SET) == req->offset)
195 {
196 if (req->type == REQ_READ) 231 if (req->type == REQ_READ)
197 req->result = read (req->fd, req->dataptr, req->length); 232 req->result = pread (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32);
198 else 233 else if (req->type == REQ_WRITE)
199 req->result = write(req->fd, req->dataptr, req->length); 234 req->result = pwrite(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32);
200 }
201 }
202 else if (req->type == REQ_OPEN) 235 else if (req->type == REQ_OPEN)
203 {
204 req->result = open (req->dataptr, req->fd, req->mode); 236 req->result = open (req->dataptr, req->fd, req->mode);
205 }
206 else if (req->type == REQ_CLOSE) 237 else if (req->type == REQ_CLOSE)
207 {
208 req->result = close (req->fd); 238 req->result = close (req->fd);
209 } 239 else if (req->type == REQ_STAT)
240 req->result = stat64 (req->dataptr, req->statdata);
241 else if (req->type == REQ_LSTAT)
242 req->result = lstat64 (req->dataptr, req->statdata);
243 else if (req->type == REQ_FSTAT)
244 req->result = fstat64 (req->fd, req->statdata);
210 else 245 else
211 { 246 {
212 write (respipe[1], (void *)&req, sizeof (req)); 247 write (respipe[1], (void *)&req, sizeof (req));
213 break; 248 break;
214 } 249 }
… …
255 { 290 {
256 end_thread (); 291 end_thread ();
257 cur--; 292 cur--;
258 } 293 }
259 294
260 poll_cb ();
261 while (started > nthreads) 295 while (started > nthreads)
262 { 296 {
263 sched_yield (); 297 fd_set rfd;
264 fcntl (respipe[0], F_SETFL, 0); 298 FD_ZERO(&rfd);
299 FD_SET(respipe[0], &rfd);
300
301 select (respipe[0] + 1, &rfd, 0, 0, 0);
265 poll_cb (); 302 poll_cb ();
266 fcntl (respipe[0], F_SETFL, O_NONBLOCK);
267 } 303 }
268 304
269void 305void
306aio_open(pathname,flags,mode,callback)
307 SV * pathname
308 int flags
309 int mode
310 SV * callback
311 PROTOTYPE: $$$$
312 CODE:
313 aio_req req;
314
315 Newz (0, req, 1, aio_cb);
316
317 if (!req)
318 croak ("out of memory during aio_req allocation");
319
320 req->type = REQ_OPEN;
321 req->data = newSVsv (pathname);
322 req->dataptr = SvPV_nolen (req->data);
323 req->fd = flags;
324 req->mode = mode;
325 req->callback = SvREFCNT_inc (callback);
326
327 send_req (req);
328
329void
330aio_close(fh,callback)
331 InputStream fh
332 SV * callback
333 PROTOTYPE: $$
334 CODE:
335 aio_req req;
336
337 Newz (0, req, 1, aio_cb);
338
339 if (!req)
340 croak ("out of memory during aio_req allocation");
341
342 req->type = REQ_CLOSE;
343 req->fd = PerlIO_fileno (fh);
344 req->callback = SvREFCNT_inc (callback);
345
346 send_req (req);
347
348void
270aio_read(fh,offset,length,data,dataoffset,callback) 349aio_read(fh,offset,length,data,dataoffset,callback)
271 InOutStream fh 350 InputStream fh
272 UV offset 351 UV offset
273 IV length 352 IV length
274 SV * data 353 SV * data
275 IV dataoffset 354 IV dataoffset
276 SV * callback 355 SV * callback
277 PROTOTYPE: $$$$$$ 356 PROTOTYPE: $$$$$$
278 ALIAS: 357 CODE:
279 aio_write = 1
280 CODE:
281 SvUPGRADE (data, SVt_PV);
282 SvPOK_on (data);
283 read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 358 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
284 359
285void 360void
286aio_open(pathname,flags,mode,callback) 361aio_write(fh,offset,length,data,dataoffset,callback)
287 char * pathname 362 OutputStream fh
288 int flags 363 UV offset
289 int mode 364 IV length
365 SV * data
366 IV dataoffset
290 SV * callback 367 SV * callback
291 PROTOTYPE: $$$$ 368 PROTOTYPE: $$$$$$
369 CODE:
370 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
371
372void
373aio_stat(fh_or_path,callback)
374 SV * fh_or_path
375 SV * callback
376 PROTOTYPE: $$
377 ALIAS:
378 aio_lstat = 1
292 CODE: 379 CODE:
293 aio_req req; 380 aio_req req;
294 381
295 New (0, req, 1, aio_cb); 382 Newz (0, req, 1, aio_cb);
296 383
297 if (!req) 384 if (!req)
298 croak ("out of memory during aio_req allocation"); 385 croak ("out of memory during aio_req allocation");
299 386
300 req->type = REQ_OPEN; 387 New (0, req->statdata, 1, struct stat64);
301 req->dataptr = pathname;
302 req->fd = flags;
303 req->mode = mode;
304 req->callback = SvREFCNT_inc (callback);
305 388
306 send_req (req);
307
308void
309aio_close(fh,callback)
310 InOutStream fh
311 SV * callback
312 PROTOTYPE: $
313 CODE:
314 aio_req req;
315
316 New (0, req, 1, aio_cb);
317
318 if (!req) 389 if (!req->statdata)
319 croak ("out of memory during aio_req allocation"); 390 croak ("out of memory during aio_req->statdata allocation");
320 391
392 if (SvPOK (fh_or_path))
393 {
394 req->type = ix ? REQ_LSTAT : REQ_STAT;
395 req->data = newSVsv (fh_or_path);
396 req->dataptr = SvPV_nolen (req->data);
397 }
398 else
399 {
321 req->type = REQ_CLOSE; 400 req->type = REQ_FSTAT;
322 req->fd = PerlIO_fileno (fh); 401 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
402 }
403
323 req->callback = SvREFCNT_inc (callback); 404 req->callback = SvREFCNT_inc (callback);
324 405
325 send_req (req); 406 send_req (req);
326 407
327int 408int

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines