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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 1.14 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 ;) */
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 }
… …
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
177 /* we rely on gcc's ability to create closures. */ 208 /* 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) 209 _syscall3(int,read,int,fd,char *,buf,size_t,count)
180 _syscall3(int,write,int,fd,char *,buf,off_t,count) 210 _syscall3(int,write,int,fd,char *,buf,size_t,count)
211
181 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) 212 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
182 _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)
183 221
184 sigprocmask (SIG_SETMASK, &fullsigset, 0); 222 sigprocmask (SIG_SETMASK, &fullsigset, 0);
185 223
186 /* then loop */ 224 /* then loop */
187 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 225 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
188 { 226 {
189 req->thread = thr; 227 req->thread = thr;
190 errno = 0; 228 errno = 0; /* strictly unnecessary */
191 229
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) 230 if (req->type == REQ_READ)
197 req->result = read (req->fd, req->dataptr, req->length); 231 req->result = pread (req->fd, req->dataptr, req->length, req->offset);
198 else 232 else if (req->type == REQ_WRITE)
199 req->result = write(req->fd, req->dataptr, req->length); 233 req->result = pwrite (req->fd, req->dataptr, req->length, req->offset);
200 }
201 }
202 else if (req->type == REQ_OPEN) 234 else if (req->type == REQ_OPEN)
203 {
204 req->result = open (req->dataptr, req->fd, req->mode); 235 req->result = open (req->dataptr, req->fd, req->mode);
205 }
206 else if (req->type == REQ_CLOSE) 236 else if (req->type == REQ_CLOSE)
207 {
208 req->result = close (req->fd); 237 req->result = close (req->fd);
209 } 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);
210 else 244 else
211 { 245 {
212 write (respipe[1], (void *)&req, sizeof (req)); 246 write (respipe[1], (void *)&req, sizeof (req));
213 break; 247 break;
214 } 248 }
… …
255 { 289 {
256 end_thread (); 290 end_thread ();
257 cur--; 291 cur--;
258 } 292 }
259 293
260 poll_cb ();
261 while (started > nthreads) 294 while (started > nthreads)
262 { 295 {
263 sched_yield (); 296 fd_set rfd;
264 fcntl (respipe[0], F_SETFL, 0); 297 FD_ZERO(&rfd);
298 FD_SET(respipe[0], &rfd);
299
300 select (respipe[0] + 1, &rfd, 0, 0, 0);
265 poll_cb (); 301 poll_cb ();
266 fcntl (respipe[0], F_SETFL, O_NONBLOCK);
267 } 302 }
268 303
269void 304void
305aio_open(pathname,flags,mode,callback)
306 SV * pathname
307 int flags
308 int mode
309 SV * callback
310 PROTOTYPE: $$$$
311 CODE:
312 aio_req req;
313
314 Newz (0, req, 1, aio_cb);
315
316 if (!req)
317 croak ("out of memory during aio_req allocation");
318
319 req->type = REQ_OPEN;
320 req->data = newSVsv (pathname);
321 req->dataptr = SvPV_nolen (req->data);
322 req->fd = flags;
323 req->mode = mode;
324 req->callback = SvREFCNT_inc (callback);
325
326 send_req (req);
327
328void
329aio_close(fh,callback)
330 InputStream fh
331 SV * callback
332 PROTOTYPE: $$
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
270aio_read(fh,offset,length,data,dataoffset,callback) 348aio_read(fh,offset,length,data,dataoffset,callback)
271 InOutStream fh 349 InputStream fh
272 UV offset 350 UV offset
273 IV length 351 IV length
274 SV * data 352 SV * data
275 IV dataoffset 353 IV dataoffset
276 SV * callback 354 SV * callback
277 PROTOTYPE: $$$$$$ 355 PROTOTYPE: $$$$$$
278 ALIAS: 356 CODE:
279 aio_write = 1
280 CODE:
281 SvUPGRADE (data, SVt_PV);
282 SvPOK_on (data);
283 read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 357 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
284 358
285void 359void
286aio_open(pathname,flags,mode,callback) 360aio_write(fh,offset,length,data,dataoffset,callback)
287 char * pathname 361 OutputStream fh
288 int flags 362 UV offset
289 int mode 363 IV length
364 SV * data
365 IV dataoffset
290 SV * callback 366 SV * callback
291 PROTOTYPE: $$$$ 367 PROTOTYPE: $$$$$$
368 CODE:
369 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
370
371void
372aio_stat(fh_or_path,callback)
373 SV * fh_or_path
374 SV * callback
375 PROTOTYPE: $$
376 ALIAS:
377 aio_lstat = 1
292 CODE: 378 CODE:
293 aio_req req; 379 aio_req req;
294 380
295 New (0, req, 1, aio_cb); 381 Newz (0, req, 1, aio_cb);
296 382
297 if (!req) 383 if (!req)
298 croak ("out of memory during aio_req allocation"); 384 croak ("out of memory during aio_req allocation");
299 385
300 req->type = REQ_OPEN; 386 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);
305 387
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) 388 if (!req->statdata)
319 croak ("out of memory during aio_req allocation"); 389 croak ("out of memory during aio_req->statdata allocation");
320 390
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 {
321 req->type = REQ_CLOSE; 399 req->type = REQ_FSTAT;
322 req->fd = PerlIO_fileno (fh); 400 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
401 }
402
323 req->callback = SvREFCNT_inc (callback); 403 req->callback = SvREFCNT_inc (callback);
324 404
325 send_req (req); 405 send_req (req);
326 406
327int 407int

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