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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 1.14 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, REQ_CLOSE }; 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 }
… …
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
175 /* we rely on gcc's ability to create closures. */ 208 /* 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) 209 _syscall3(int,read,int,fd,char *,buf,size_t,count)
178 _syscall3(int,write,int,fd,char *,buf,off_t,count) 210 _syscall3(int,write,int,fd,char *,buf,size_t,count)
211
179 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) 212 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
180 _syscall1(int,close,int,fd) 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)
181 221
182 sigprocmask (SIG_SETMASK, &fullsigset, 0); 222 sigprocmask (SIG_SETMASK, &fullsigset, 0);
183 223
184 /* then loop */ 224 /* then loop */
185 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 225 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
186 { 226 {
187 req->thread = thr; 227 req->thread = thr;
188 errno = 0; 228 errno = 0; /* strictly unnecessary */
189 229
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) 230 if (req->type == REQ_READ)
195 req->result = read (req->fd, req->dataptr, req->length); 231 req->result = pread (req->fd, req->dataptr, req->length, req->offset);
196 else 232 else if (req->type == REQ_WRITE)
197 req->result = write(req->fd, req->dataptr, req->length); 233 req->result = pwrite (req->fd, req->dataptr, req->length, req->offset);
198 }
199 }
200 else if (req->type == REQ_OPEN) 234 else if (req->type == REQ_OPEN)
201 {
202 req->result = open (req->dataptr, req->fd, req->mode); 235 req->result = open (req->dataptr, req->fd, req->mode);
203 }
204 else if (req->type == REQ_CLOSE) 236 else if (req->type == REQ_CLOSE)
205 {
206 req->result = close (req->fd); 237 req->result = close (req->fd);
207 } 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);
208 else 244 else
209 { 245 {
210 write (respipe[1], (void *)&req, sizeof (req)); 246 write (respipe[1], (void *)&req, sizeof (req));
211 break; 247 break;
212 } 248 }
… …
253 { 289 {
254 end_thread (); 290 end_thread ();
255 cur--; 291 cur--;
256 } 292 }
257 293
258 poll_cb ();
259 while (started > nthreads) 294 while (started > nthreads)
260 { 295 {
261 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);
262 poll_cb (); 301 poll_cb ();
263 } 302 }
264 303
265void 304void
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: $$$$$$
274 ALIAS:
275 aio_write = 1
276 CODE:
277 SvUPGRADE (data, SVt_PV);
278 SvPOK_on (data);
279 read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
280
281void
282aio_open(pathname,flags,mode,callback) 305aio_open(pathname,flags,mode,callback)
283 char * pathname 306 SV * pathname
284 int flags 307 int flags
285 int mode 308 int mode
286 SV * callback 309 SV * callback
287 PROTOTYPE: $$$$ 310 PROTOTYPE: $$$$
288 CODE: 311 CODE:
289 aio_req req; 312 aio_req req;
290 313
291 New (0, req, 1, aio_cb); 314 Newz (0, req, 1, aio_cb);
292 315
293 if (!req) 316 if (!req)
294 croak ("out of memory during aio_req allocation"); 317 croak ("out of memory during aio_req allocation");
295 318
296 req->type = REQ_OPEN; 319 req->type = REQ_OPEN;
297 req->dataptr = pathname; 320 req->data = newSVsv (pathname);
321 req->dataptr = SvPV_nolen (req->data);
298 req->fd = flags; 322 req->fd = flags;
299 req->mode = mode; 323 req->mode = mode;
300 req->callback = SvREFCNT_inc (callback); 324 req->callback = SvREFCNT_inc (callback);
301 325
302 send_req (req); 326 send_req (req);
303 327
304void 328void
305aio_close(fh,callback) 329aio_close(fh,callback)
306 PerlIO * fh 330 InputStream fh
307 SV * callback 331 SV * callback
308 PROTOTYPE: $ 332 PROTOTYPE: $$
309 CODE: 333 CODE:
310 aio_req req; 334 aio_req req;
311 335
312 New (0, req, 1, aio_cb); 336 Newz (0, req, 1, aio_cb);
313 337
314 if (!req) 338 if (!req)
315 croak ("out of memory during aio_req allocation"); 339 croak ("out of memory during aio_req allocation");
316 340
317 req->type = REQ_CLOSE; 341 req->type = REQ_CLOSE;
318 req->fd = PerlIO_fileno (fh); 342 req->fd = PerlIO_fileno (fh);
319 req->callback = SvREFCNT_inc (callback); 343 req->callback = SvREFCNT_inc (callback);
320 344
321 send_req (req); 345 send_req (req);
322 346
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
323int 407int
324poll_fileno() 408poll_fileno()
325 PROTOTYPE: 409 PROTOTYPE:
326 CODE: 410 CODE:
327 RETVAL = respipe[0]; 411 RETVAL = respipe[0];

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