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 1.9 by root, Thu Aug 16 18:58:34 2001 UTC vs.
Revision 1.14 by root, Tue Apr 2 14:01:09 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 ;) */
14typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
15
11#define STACKSIZE 1024 /* yeah */ 16#define STACKSIZE 1024 /* yeah */
12 17
13enum { REQ_QUIT, REQ_READ, REQ_WRITE, REQ_OPEN }; 18enum { REQ_QUIT, REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, REQ_STAT, REQ_LSTAT, REQ_FSTAT};
14 19
15typedef struct { 20typedef struct {
16 char stack[STACKSIZE]; 21 char stack[STACKSIZE];
17} aio_thread; 22} aio_thread;
18 23
19typedef struct { 24typedef struct {
20 int type; 25 int type;
21 aio_thread *thread; 26 aio_thread *thread;
22 27
23/* read/write */
24 int fd; 28 int fd;
25 off_t offset; 29 off_t offset;
26 size_t length; 30 size_t length;
27 ssize_t result; 31 ssize_t result;
28 mode_t mode; /* open */ 32 mode_t mode; /* open */
29 int errorno; 33 int errorno;
30 SV *data, *callback; 34 SV *data, *callback;
31 void *dataptr; 35 void *dataptr;
32 STRLEN dataoffset; 36 STRLEN dataoffset;
37
38 struct stat64 *statdata;
33} aio_cb; 39} aio_cb;
34 40
35typedef aio_cb *aio_req; 41typedef aio_cb *aio_req;
36 42
37static int started; 43static int started;
… …
77 SV *data, STRLEN dataoffset, SV*callback) 83 SV *data, STRLEN dataoffset, SV*callback)
78{ 84{
79 aio_req req; 85 aio_req req;
80 STRLEN svlen; 86 STRLEN svlen;
81 char *svptr = SvPV (data, svlen); 87 char *svptr = SvPV (data, svlen);
88
89 SvUPGRADE (data, SVt_PV);
90 SvPOK_on (data);
82 91
83 if (dataoffset < 0) 92 if (dataoffset < 0)
84 dataoffset += svlen; 93 dataoffset += svlen;
85 94
86 if (dataoffset < 0 || dataoffset > svlen) 95 if (dataoffset < 0 || dataoffset > svlen)
… …
99 } 108 }
100 109
101 if (length < 0) 110 if (length < 0)
102 croak ("length must not be negative"); 111 croak ("length must not be negative");
103 112
104 New (0, req, 1, aio_cb); 113 Newz (0, req, 1, aio_cb);
105 114
106 if (!req) 115 if (!req)
107 croak ("out of memory during aio_req allocation"); 116 croak ("out of memory during aio_req allocation");
108 117
109 req->type = dowrite ? REQ_WRITE : REQ_READ; 118 req->type = dowrite ? REQ_WRITE : REQ_READ;
… …
138 147
139 if (req->type == REQ_READ) 148 if (req->type == REQ_READ)
140 SvCUR_set (req->data, req->dataoffset 149 SvCUR_set (req->data, req->dataoffset
141 + req->result > 0 ? req->result : 0); 150 + req->result > 0 ? req->result : 0);
142 151
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
143 PUSHMARK (SP); 176 PUSHMARK (SP);
144 XPUSHs (sv_2mortal (newSViv (req->result))); 177 XPUSHs (sv_2mortal (newSViv (req->result)));
145 PUTBACK; 178 PUTBACK;
146 call_sv (req->callback, G_VOID); 179 call_sv (req->callback, G_VOID);
147 SPAGAIN; 180 SPAGAIN;
148 181
149 SvREFCNT_dec (req->data); 182 if (req->callback)
150 SvREFCNT_dec (req->callback); 183 SvREFCNT_dec (req->callback);
151 184
152 errno = errorno; 185 errno = errorno;
153 nreqs--; 186 nreqs--;
154 count++; 187 count++;
155 } 188 }
… …
170{ 203{
171 aio_thread *thr = thr_arg; 204 aio_thread *thr = thr_arg;
172 aio_req req; 205 aio_req req;
173 int errno; 206 int errno;
174 207
208 /* we rely on gcc's ability to create closures. */
209 _syscall3(int,read,int,fd,char *,buf,size_t,count)
210 _syscall3(int,write,int,fd,char *,buf,size_t,count)
211
212 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
213 _syscall1(int,close,int,fd)
214
215 _syscall4(int,pread,int,fd,char *,buf,size_t,count,off_t,offset)
216 _syscall4(int,pwrite,int,fd,char *,buf,size_t,count,off_t,offset)
217
218 _syscall2(int,stat64, const char *, filename, struct stat64 *, buf)
219 _syscall2(int,lstat64, const char *, filename, struct stat64 *, buf)
220 _syscall2(int,fstat64, int, fd, struct stat64 *, buf)
221
175 sigprocmask (SIG_SETMASK, &fullsigset, 0); 222 sigprocmask (SIG_SETMASK, &fullsigset, 0);
176
177 /* 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);
180 _syscall3(int,write,int,fd,char *,buf,off_t,count);
181 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode);
182 223
183 /* then loop */ 224 /* then loop */
184 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 225 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
185 { 226 {
186 req->thread = thr; 227 req->thread = thr;
187 errno = 0; 228 errno = 0; /* strictly unnecessary */
188 229
189 if (req->type == REQ_READ || req->type == REQ_WRITE)
190 {
191 if (lseek (req->fd, req->offset, SEEK_SET) == req->offset)
192 {
193 if (req->type == REQ_READ) 230 if (req->type == REQ_READ)
194 req->result = read (req->fd, req->dataptr, req->length); 231 req->result = pread (req->fd, req->dataptr, req->length, req->offset);
195 else 232 else if (req->type == REQ_WRITE)
196 req->result = write(req->fd, req->dataptr, req->length); 233 req->result = pwrite (req->fd, req->dataptr, req->length, req->offset);
197 }
198 }
199 else if (req->type == REQ_OPEN) 234 else if (req->type == REQ_OPEN)
200 {
201 req->result = open (req->dataptr, req->fd, req->mode); 235 req->result = open (req->dataptr, req->fd, req->mode);
202 } 236 else if (req->type == REQ_CLOSE)
237 req->result = close (req->fd);
238 else if (req->type == REQ_STAT)
239 req->result = stat64 (req->dataptr, req->statdata);
240 else if (req->type == REQ_LSTAT)
241 req->result = lstat64 (req->dataptr, req->statdata);
242 else if (req->type == REQ_FSTAT)
243 req->result = fstat64 (req->fd, req->statdata);
203 else 244 else
204 { 245 {
205 write (respipe[1], (void *)&req, sizeof (req)); 246 write (respipe[1], (void *)&req, sizeof (req));
206 break; 247 break;
207 } 248 }
… …
248 { 289 {
249 end_thread (); 290 end_thread ();
250 cur--; 291 cur--;
251 } 292 }
252 293
253 poll_cb ();
254 while (started > nthreads) 294 while (started > nthreads)
255 { 295 {
256 sched_yield (); 296 fd_set rfd;
297 FD_ZERO(&rfd);
298 FD_SET(respipe[0], &rfd);
299
300 select (respipe[0] + 1, &rfd, 0, 0, 0);
257 poll_cb (); 301 poll_cb ();
258 } 302 }
259 303
260void 304void
261aio_read(fh,offset,length,data,dataoffset,callback)
262 PerlIO * fh
263 UV offset
264 STRLEN length
265 SV * data
266 STRLEN dataoffset
267 SV * callback
268 PROTOTYPE: $$$$$$
269 ALIAS:
270 aio_write = 1
271 CODE:
272 SvUPGRADE (data, SVt_PV);
273 SvPOK_on (data);
274 read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
275
276void
277aio_open(pathname,flags,mode,callback) 305aio_open(pathname,flags,mode,callback)
278 char * pathname 306 SV * pathname
279 int flags 307 int flags
280 int mode 308 int mode
281 SV * callback 309 SV * callback
282 PROTOTYPE: $$$$ 310 PROTOTYPE: $$$$
283 CODE: 311 CODE:
284 aio_req req; 312 aio_req req;
285 313
286 New (0, req, 1, aio_cb); 314 Newz (0, req, 1, aio_cb);
287 315
288 if (!req) 316 if (!req)
289 croak ("out of memory during aio_req allocation"); 317 croak ("out of memory during aio_req allocation");
290 318
291 req->type = REQ_OPEN; 319 req->type = REQ_OPEN;
292 req->dataptr = pathname; 320 req->data = newSVsv (pathname);
321 req->dataptr = SvPV_nolen (req->data);
293 req->fd = flags; 322 req->fd = flags;
294 req->mode = mode; 323 req->mode = mode;
295 req->callback = SvREFCNT_inc (callback); 324 req->callback = SvREFCNT_inc (callback);
296 325
297 send_req (req); 326 send_req (req);
298 327
328void
329aio_close(fh,callback)
330 InputStream fh
331 SV * callback
332 PROTOTYPE: $$
333 CODE:
334 aio_req req;
335
336 Newz (0, req, 1, aio_cb);
337
338 if (!req)
339 croak ("out of memory during aio_req allocation");
340
341 req->type = REQ_CLOSE;
342 req->fd = PerlIO_fileno (fh);
343 req->callback = SvREFCNT_inc (callback);
344
345 send_req (req);
346
347void
348aio_read(fh,offset,length,data,dataoffset,callback)
349 InputStream fh
350 UV offset
351 IV length
352 SV * data
353 IV dataoffset
354 SV * callback
355 PROTOTYPE: $$$$$$
356 CODE:
357 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
358
359void
360aio_write(fh,offset,length,data,dataoffset,callback)
361 OutputStream fh
362 UV offset
363 IV length
364 SV * data
365 IV dataoffset
366 SV * callback
367 PROTOTYPE: $$$$$$
368 CODE:
369 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
370
371void
372aio_stat(fh_or_path,callback)
373 SV * fh_or_path
374 SV * callback
375 PROTOTYPE: $$
376 ALIAS:
377 aio_lstat = 1
378 CODE:
379 aio_req req;
380
381 Newz (0, req, 1, aio_cb);
382
383 if (!req)
384 croak ("out of memory during aio_req allocation");
385
386 New (0, req->statdata, 1, struct stat64);
387
388 if (!req->statdata)
389 croak ("out of memory during aio_req->statdata allocation");
390
391 if (SvPOK (fh_or_path))
392 {
393 req->type = ix ? REQ_LSTAT : REQ_STAT;
394 req->data = newSVsv (fh_or_path);
395 req->dataptr = SvPV_nolen (req->data);
396 }
397 else
398 {
399 req->type = REQ_FSTAT;
400 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
401 }
402
403 req->callback = SvREFCNT_inc (callback);
404
405 send_req (req);
406
299int 407int
300poll_fileno() 408poll_fileno()
301 PROTOTYPE: 409 PROTOTYPE:
302 CODE: 410 CODE:
303 RETVAL = respipe[0]; 411 RETVAL = respipe[0];

Diff Legend

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