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Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.8 by root, Thu Aug 16 02:43:46 2001 UTC vs.
Revision 1.15 by root, Sat May 18 21:48:36 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 }
… …
167 200
168static int 201static int
169aio_proc(void *thr_arg) 202aio_proc(void *thr_arg)
170{ 203{
171 aio_thread *thr = thr_arg; 204 aio_thread *thr = thr_arg;
172 int sig; 205 aio_req req;
173 int errno; 206 int errno;
174 aio_req req; 207
208 /* this is very much x86 and kernel-specific :(:(:( */
209 /* we rely on gcc's ability to create closures. */
210 _syscall3(int,read,int,fd,char *,buf,size_t,count)
211 _syscall3(int,write,int,fd,char *,buf,size_t,count)
212
213 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
214 _syscall1(int,close,int,fd)
215
216 _syscall5(int,pread,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
217 _syscall5(int,pwrite,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
218
219 _syscall2(int,stat64, const char *, filename, struct stat64 *, buf)
220 _syscall2(int,lstat64, const char *, filename, struct stat64 *, buf)
221 _syscall2(int,fstat64, int, fd, struct stat64 *, buf)
175 222
176 sigprocmask (SIG_SETMASK, &fullsigset, 0); 223 sigprocmask (SIG_SETMASK, &fullsigset, 0);
177
178 /* we rely on gcc's ability to create closures. */
179 _syscall3(int,lseek,int,fd,off_t,offset,int,whence);
180 _syscall3(int,read,int,fd,char *,buf,off_t,count);
181 _syscall3(int,write,int,fd,char *,buf,off_t,count);
182 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode);
183 224
184 /* then loop */ 225 /* then loop */
185 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 226 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
186 { 227 {
187 req->thread = thr; 228 req->thread = thr;
188 errno = 0; 229 errno = 0; /* strictly unnecessary */
189 230
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) 231 if (req->type == REQ_READ)
195 req->result = read (req->fd, req->dataptr, req->length); 232 req->result = pread (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32);
196 else 233 else if (req->type == REQ_WRITE)
197 req->result = write(req->fd, req->dataptr, req->length); 234 req->result = pwrite(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32);
198 }
199 }
200 else if (req->type == REQ_OPEN) 235 else if (req->type == REQ_OPEN)
201 {
202 req->result = open (req->dataptr, req->fd, req->mode); 236 req->result = open (req->dataptr, req->fd, req->mode);
203 } 237 else if (req->type == REQ_CLOSE)
238 req->result = close (req->fd);
239 else if (req->type == REQ_STAT)
240 req->result = stat64 (req->dataptr, req->statdata);
241 else if (req->type == REQ_LSTAT)
242 req->result = lstat64 (req->dataptr, req->statdata);
243 else if (req->type == REQ_FSTAT)
244 req->result = fstat64 (req->fd, req->statdata);
204 else 245 else
205 { 246 {
206 write (respipe[1], (void *)&req, sizeof (req)); 247 write (respipe[1], (void *)&req, sizeof (req));
207 break; 248 break;
208 } 249 }
… …
217MODULE = Linux::AIO PACKAGE = Linux::AIO 258MODULE = Linux::AIO PACKAGE = Linux::AIO
218 259
219BOOT: 260BOOT:
220{ 261{
221 sigfillset (&fullsigset); 262 sigfillset (&fullsigset);
263 sigdelset (&fullsigset, SIGTERM);
264 sigdelset (&fullsigset, SIGQUIT);
265 sigdelset (&fullsigset, SIGABRT);
266 sigdelset (&fullsigset, SIGINT);
222 267
223 if (pipe (reqpipe) || pipe (respipe)) 268 if (pipe (reqpipe) || pipe (respipe))
224 croak ("unable to initialize request or result pipe"); 269 croak ("unable to initialize request or result pipe");
225 270
226 if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) 271 if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))
… …
245 { 290 {
246 end_thread (); 291 end_thread ();
247 cur--; 292 cur--;
248 } 293 }
249 294
250 poll_cb ();
251 while (started > nthreads) 295 while (started > nthreads)
252 { 296 {
253 sched_yield (); 297 fd_set rfd;
298 FD_ZERO(&rfd);
299 FD_SET(respipe[0], &rfd);
300
301 select (respipe[0] + 1, &rfd, 0, 0, 0);
254 poll_cb (); 302 poll_cb ();
255 } 303 }
256 304
257void 305void
258aio_read(fh,offset,length,data,dataoffset,callback)
259 PerlIO * fh
260 UV offset
261 STRLEN length
262 SV * data
263 STRLEN dataoffset
264 SV * callback
265 PROTOTYPE: $$$$$$
266 ALIAS:
267 aio_write = 1
268 CODE:
269 SvUPGRADE (data, SVt_PV);
270 SvPOK_on (data);
271 read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
272
273void
274aio_open(pathname,flags,mode,callback) 306aio_open(pathname,flags,mode,callback)
275 char * pathname 307 SV * pathname
276 int flags 308 int flags
277 int mode 309 int mode
278 SV * callback 310 SV * callback
279 PROTOTYPE: $$$$ 311 PROTOTYPE: $$$$
280 CODE: 312 CODE:
281 aio_req req; 313 aio_req req;
282 314
283 New (0, req, 1, aio_cb); 315 Newz (0, req, 1, aio_cb);
284 316
285 if (!req) 317 if (!req)
286 croak ("out of memory during aio_req allocation"); 318 croak ("out of memory during aio_req allocation");
287 319
288 req->type = REQ_OPEN; 320 req->type = REQ_OPEN;
289 req->dataptr = pathname; 321 req->data = newSVsv (pathname);
322 req->dataptr = SvPV_nolen (req->data);
290 req->fd = flags; 323 req->fd = flags;
291 req->mode = mode; 324 req->mode = mode;
292 req->callback = SvREFCNT_inc (callback); 325 req->callback = SvREFCNT_inc (callback);
293 326
294 send_req (req); 327 send_req (req);
295 328
329void
330aio_close(fh,callback)
331 InputStream fh
332 SV * callback
333 PROTOTYPE: $$
334 CODE:
335 aio_req req;
336
337 Newz (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 Newz (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->data = newSVsv (fh_or_path);
396 req->dataptr = SvPV_nolen (req->data);
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
296int 408int
297poll_fileno() 409poll_fileno()
298 PROTOTYPE: 410 PROTOTYPE:
299 CODE: 411 CODE:
300 RETVAL = respipe[0]; 412 RETVAL = respipe[0];

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