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/cvs/Linux-AIO/AIO.xs
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Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.12 by root, Tue Dec 25 02:33:48 2001 UTC vs.
Revision 1.13 by root, Mon Apr 1 20:30:08 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 */ 28 SV *savesv;
29
26 int fd; 30 int fd;
27 off_t offset; 31 off_t offset;
28 size_t length; 32 size_t length;
29 ssize_t result; 33 ssize_t result;
30 mode_t mode; /* open */ 34 mode_t mode; /* open */
31 int errorno; 35 int errorno;
32 SV *data, *callback; 36 SV *data, *callback;
33 void *dataptr; 37 void *dataptr;
34 STRLEN dataoffset; 38 STRLEN dataoffset;
39
40 struct stat64 *statdata;
35} aio_cb; 41} aio_cb;
36 42
37typedef aio_cb *aio_req; 43typedef aio_cb *aio_req;
38 44
39static int started; 45static int started;
… …
79 SV *data, STRLEN dataoffset, SV*callback) 85 SV *data, STRLEN dataoffset, SV*callback)
80{ 86{
81 aio_req req; 87 aio_req req;
82 STRLEN svlen; 88 STRLEN svlen;
83 char *svptr = SvPV (data, svlen); 89 char *svptr = SvPV (data, svlen);
90
91 SvUPGRADE (data, SVt_PV);
92 SvPOK_on (data);
84 93
85 if (dataoffset < 0) 94 if (dataoffset < 0)
86 dataoffset += svlen; 95 dataoffset += svlen;
87 96
88 if (dataoffset < 0 || dataoffset > svlen) 97 if (dataoffset < 0 || dataoffset > svlen)
… …
136 else 145 else
137 { 146 {
138 int errorno = errno; 147 int errorno = errno;
139 errno = req->errorno; 148 errno = req->errorno;
140 149
150 if (req->savesv)
151 SvREFCNT_dec (req->savesv);
152
141 if (req->type == REQ_READ) 153 if (req->type == REQ_READ)
142 SvCUR_set (req->data, req->dataoffset 154 SvCUR_set (req->data, req->dataoffset
143 + req->result > 0 ? req->result : 0); 155 + req->result > 0 ? req->result : 0);
156
157 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
158 {
159 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
160 PL_laststatval = req->result;
161 PL_statcache.st_dev = req->statdata->st_dev;
162 PL_statcache.st_ino = req->statdata->st_ino;
163 PL_statcache.st_mode = req->statdata->st_mode;
164 PL_statcache.st_nlink = req->statdata->st_nlink;
165 PL_statcache.st_uid = req->statdata->st_uid;
166 PL_statcache.st_gid = req->statdata->st_gid;
167 PL_statcache.st_rdev = req->statdata->st_rdev;
168 PL_statcache.st_size = req->statdata->st_size;
169 PL_statcache.st_atime = req->statdata->st_atime;
170 PL_statcache.st_mtime = req->statdata->st_mtime;
171 PL_statcache.st_ctime = req->statdata->st_ctime;
172 PL_statcache.st_blksize = req->statdata->st_blksize;
173 PL_statcache.st_blocks = req->statdata->st_blocks;
174
175 Safefree (req->statdata);
176 }
144 177
145 PUSHMARK (SP); 178 PUSHMARK (SP);
146 XPUSHs (sv_2mortal (newSViv (req->result))); 179 XPUSHs (sv_2mortal (newSViv (req->result)));
147 PUTBACK; 180 PUTBACK;
148 call_sv (req->callback, G_VOID); 181 call_sv (req->callback, G_VOID);
… …
173 aio_thread *thr = thr_arg; 206 aio_thread *thr = thr_arg;
174 aio_req req; 207 aio_req req;
175 int errno; 208 int errno;
176 209
177 /* we rely on gcc's ability to create closures. */ 210 /* 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) 211 _syscall3(int,read,int,fd,char *,buf,size_t,count)
180 _syscall3(int,write,int,fd,char *,buf,off_t,count) 212 _syscall3(int,write,int,fd,char *,buf,size_t,count)
213
181 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) 214 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
182 _syscall1(int,close,int,fd) 215 _syscall1(int,close,int,fd)
216
217 _syscall4(int,pread,int,fd,char *,buf,size_t,count,off_t,offset)
218 _syscall4(int,pwrite,int,fd,char *,buf,size_t,count,off_t,offset)
219
220 _syscall2(int,stat64, const char *, filename, struct stat64 *, buf)
221 _syscall2(int,lstat64, const char *, filename, struct stat64 *, buf)
222 _syscall2(int,fstat64, int, fd, struct stat64 *, buf)
183 223
184 sigprocmask (SIG_SETMASK, &fullsigset, 0); 224 sigprocmask (SIG_SETMASK, &fullsigset, 0);
185 225
186 /* then loop */ 226 /* then loop */
187 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 227 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
188 { 228 {
189 req->thread = thr; 229 req->thread = thr;
190 errno = 0; 230 errno = 0;
191 231
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) 232 if (req->type == REQ_READ)
197 req->result = read (req->fd, req->dataptr, req->length); 233 req->result = pread (req->fd, req->dataptr, req->length, req->offset);
198 else 234 else if (req->type == REQ_WRITE)
199 req->result = write(req->fd, req->dataptr, req->length); 235 req->result = pwrite (req->fd, req->dataptr, req->length, req->offset);
200 }
201 }
202 else if (req->type == REQ_OPEN) 236 else if (req->type == REQ_OPEN)
203 {
204 req->result = open (req->dataptr, req->fd, req->mode); 237 req->result = open (req->dataptr, req->fd, req->mode);
205 }
206 else if (req->type == REQ_CLOSE) 238 else if (req->type == REQ_CLOSE)
207 {
208 req->result = close (req->fd); 239 req->result = close (req->fd);
209 } 240 else if (req->type == REQ_STAT)
241 req->result = stat64 (req->dataptr, req->statdata);
242 else if (req->type == REQ_LSTAT)
243 req->result = lstat64 (req->dataptr, req->statdata);
244 else if (req->type == REQ_FSTAT)
245 req->result = fstat64 (req->fd, req->statdata);
210 else 246 else
211 { 247 {
212 write (respipe[1], (void *)&req, sizeof (req)); 248 write (respipe[1], (void *)&req, sizeof (req));
213 break; 249 break;
214 } 250 }
… …
265 poll_cb (); 301 poll_cb ();
266 fcntl (respipe[0], F_SETFL, O_NONBLOCK); 302 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: $$$$
312 CODE:
313 aio_req req;
314
315 New (0, req, 1, aio_cb);
316
317 if (!req)
318 croak ("out of memory during aio_req allocation");
319
320 req->type = REQ_OPEN;
321 req->savesv = newSVsv (pathname);
322 req->dataptr = SvPV_nolen (req->savesv);
323 req->fd = flags;
324 req->mode = mode;
325 req->callback = SvREFCNT_inc (callback);
326
327 send_req (req);
328
329void
330aio_close(fh,callback)
331 InputStream fh
332 SV * callback
333 PROTOTYPE: $
334 CODE:
335 aio_req req;
336
337 New (0, req, 1, aio_cb);
338
339 if (!req)
340 croak ("out of memory during aio_req allocation");
341
342 req->type = REQ_CLOSE;
343 req->fd = PerlIO_fileno (fh);
344 req->callback = SvREFCNT_inc (callback);
345
346 send_req (req);
347
348void
270aio_read(fh,offset,length,data,dataoffset,callback) 349aio_read(fh,offset,length,data,dataoffset,callback)
271 InOutStream fh 350 InputStream fh
272 UV offset 351 UV offset
273 IV length 352 IV length
274 SV * data 353 SV * data
275 IV dataoffset 354 IV dataoffset
276 SV * callback 355 SV * callback
277 PROTOTYPE: $$$$$$ 356 PROTOTYPE: $$$$$$
278 ALIAS: 357 CODE:
279 aio_write = 1
280 CODE:
281 SvUPGRADE (data, SVt_PV);
282 SvPOK_on (data);
283 read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 358 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
284 359
285void 360void
286aio_open(pathname,flags,mode,callback) 361aio_write(fh,offset,length,data,dataoffset,callback)
287 char * pathname 362 OutputStream fh
288 int flags 363 UV offset
289 int mode 364 IV length
365 SV * data
366 IV dataoffset
290 SV * callback 367 SV * callback
291 PROTOTYPE: $$$$ 368 PROTOTYPE: $$$$$$
369 CODE:
370 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
371
372void
373aio_stat(fh_or_path,callback)
374 SV * fh_or_path
375 SV * callback
376 PROTOTYPE: $$
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 New (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->savesv = newSVsv (fh_or_path);
396 req->dataptr = SvPV_nolen (req->savesv);
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

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