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Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.9 by root, Thu Aug 16 18:58:34 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 ;) */
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 */ 28 SV *savesv;
29
24 int fd; 30 int fd;
25 off_t offset; 31 off_t offset;
26 size_t length; 32 size_t length;
27 ssize_t result; 33 ssize_t result;
28 mode_t mode; /* open */ 34 mode_t mode; /* open */
29 int errorno; 35 int errorno;
30 SV *data, *callback; 36 SV *data, *callback;
31 void *dataptr; 37 void *dataptr;
32 STRLEN dataoffset; 38 STRLEN dataoffset;
39
40 struct stat64 *statdata;
33} aio_cb; 41} aio_cb;
34 42
35typedef aio_cb *aio_req; 43typedef aio_cb *aio_req;
36 44
37static int started; 45static int started;
… …
77 SV *data, STRLEN dataoffset, SV*callback) 85 SV *data, STRLEN dataoffset, SV*callback)
78{ 86{
79 aio_req req; 87 aio_req req;
80 STRLEN svlen; 88 STRLEN svlen;
81 char *svptr = SvPV (data, svlen); 89 char *svptr = SvPV (data, svlen);
90
91 SvUPGRADE (data, SVt_PV);
92 SvPOK_on (data);
82 93
83 if (dataoffset < 0) 94 if (dataoffset < 0)
84 dataoffset += svlen; 95 dataoffset += svlen;
85 96
86 if (dataoffset < 0 || dataoffset > svlen) 97 if (dataoffset < 0 || dataoffset > svlen)
… …
134 else 145 else
135 { 146 {
136 int errorno = errno; 147 int errorno = errno;
137 errno = req->errorno; 148 errno = req->errorno;
138 149
150 if (req->savesv)
151 SvREFCNT_dec (req->savesv);
152
139 if (req->type == REQ_READ) 153 if (req->type == REQ_READ)
140 SvCUR_set (req->data, req->dataoffset 154 SvCUR_set (req->data, req->dataoffset
141 + 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 }
142 177
143 PUSHMARK (SP); 178 PUSHMARK (SP);
144 XPUSHs (sv_2mortal (newSViv (req->result))); 179 XPUSHs (sv_2mortal (newSViv (req->result)));
145 PUTBACK; 180 PUTBACK;
146 call_sv (req->callback, G_VOID); 181 call_sv (req->callback, G_VOID);
… …
170{ 205{
171 aio_thread *thr = thr_arg; 206 aio_thread *thr = thr_arg;
172 aio_req req; 207 aio_req req;
173 int errno; 208 int errno;
174 209
210 /* we rely on gcc's ability to create closures. */
211 _syscall3(int,read,int,fd,char *,buf,size_t,count)
212 _syscall3(int,write,int,fd,char *,buf,size_t,count)
213
214 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
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)
223
175 sigprocmask (SIG_SETMASK, &fullsigset, 0); 224 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);
182 225
183 /* then loop */ 226 /* then loop */
184 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 227 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
185 { 228 {
186 req->thread = thr; 229 req->thread = thr;
187 errno = 0; 230 errno = 0;
188 231
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) 232 if (req->type == REQ_READ)
194 req->result = read (req->fd, req->dataptr, req->length); 233 req->result = pread (req->fd, req->dataptr, req->length, req->offset);
195 else 234 else if (req->type == REQ_WRITE)
196 req->result = write(req->fd, req->dataptr, req->length); 235 req->result = pwrite (req->fd, req->dataptr, req->length, req->offset);
197 }
198 }
199 else if (req->type == REQ_OPEN) 236 else if (req->type == REQ_OPEN)
200 {
201 req->result = open (req->dataptr, req->fd, req->mode); 237 req->result = open (req->dataptr, req->fd, req->mode);
202 } 238 else if (req->type == REQ_CLOSE)
239 req->result = close (req->fd);
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);
203 else 246 else
204 { 247 {
205 write (respipe[1], (void *)&req, sizeof (req)); 248 write (respipe[1], (void *)&req, sizeof (req));
206 break; 249 break;
207 } 250 }
… …
252 295
253 poll_cb (); 296 poll_cb ();
254 while (started > nthreads) 297 while (started > nthreads)
255 { 298 {
256 sched_yield (); 299 sched_yield ();
300 fcntl (respipe[0], F_SETFL, 0);
257 poll_cb (); 301 poll_cb ();
302 fcntl (respipe[0], F_SETFL, O_NONBLOCK);
258 } 303 }
259 304
260void 305void
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: $$$$$$
269 ALIAS:
270 aio_write = 1
271 CODE:
272 SvUPGRADE (data, SVt_PV);
273 SvPOK_on (data);
274 read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
275
276void
277aio_open(pathname,flags,mode,callback) 306aio_open(pathname,flags,mode,callback)
278 char * pathname 307 SV * pathname
279 int flags 308 int flags
280 int mode 309 int mode
281 SV * callback 310 SV * callback
282 PROTOTYPE: $$$$ 311 PROTOTYPE: $$$$
283 CODE: 312 CODE:
… …
287 316
288 if (!req) 317 if (!req)
289 croak ("out of memory during aio_req allocation"); 318 croak ("out of memory during aio_req allocation");
290 319
291 req->type = REQ_OPEN; 320 req->type = REQ_OPEN;
292 req->dataptr = pathname; 321 req->savesv = newSVsv (pathname);
322 req->dataptr = SvPV_nolen (req->savesv);
293 req->fd = flags; 323 req->fd = flags;
294 req->mode = mode; 324 req->mode = mode;
295 req->callback = SvREFCNT_inc (callback); 325 req->callback = SvREFCNT_inc (callback);
296 326
297 send_req (req); 327 send_req (req);
298 328
329void
330aio_close(fh,callback)
331 InputStream fh
332 SV * callback
333 PROTOTYPE: $
334 CODE:
335 aio_req req;
336
337 New (0, req, 1, aio_cb);
338
339 if (!req)
340 croak ("out of memory during aio_req allocation");
341
342 req->type = REQ_CLOSE;
343 req->fd = PerlIO_fileno (fh);
344 req->callback = SvREFCNT_inc (callback);
345
346 send_req (req);
347
348void
349aio_read(fh,offset,length,data,dataoffset,callback)
350 InputStream fh
351 UV offset
352 IV length
353 SV * data
354 IV dataoffset
355 SV * callback
356 PROTOTYPE: $$$$$$
357 CODE:
358 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
359
360void
361aio_write(fh,offset,length,data,dataoffset,callback)
362 OutputStream fh
363 UV offset
364 IV length
365 SV * data
366 IV dataoffset
367 SV * callback
368 PROTOTYPE: $$$$$$
369 CODE:
370 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
371
372void
373aio_stat(fh_or_path,callback)
374 SV * fh_or_path
375 SV * callback
376 PROTOTYPE: $$
377 ALIAS:
378 aio_lstat = 1
379 CODE:
380 aio_req req;
381
382 New (0, req, 1, aio_cb);
383
384 if (!req)
385 croak ("out of memory during aio_req allocation");
386
387 New (0, req->statdata, 1, struct stat64);
388
389 if (!req->statdata)
390 croak ("out of memory during aio_req->statdata allocation");
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 {
400 req->type = REQ_FSTAT;
401 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
402 }
403
404 req->callback = SvREFCNT_inc (callback);
405
406 send_req (req);
407
299int 408int
300poll_fileno() 409poll_fileno()
301 PROTOTYPE: 410 PROTOTYPE:
302 CODE: 411 CODE:
303 RETVAL = respipe[0]; 412 RETVAL = respipe[0];

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