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Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.6 by root, Tue Aug 14 23:25:39 2001 UTC vs.
Revision 1.12 by root, Tue Dec 25 02:33:48 2001 UTC

… …
3#include "XSUB.h" 3#include "XSUB.h"
4 4
5#include <sys/types.h> 5#include <sys/types.h>
6#include <unistd.h> 6#include <unistd.h>
7#include <fcntl.h> 7#include <fcntl.h>
8#include <signal.h>
8#include <sched.h> 9#include <sched.h>
9 10
11typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
12
10#define STACKSIZE 2048 /* yeah */ 13#define STACKSIZE 1024 /* yeah */
11 14
12#define REQ_QUIT 0 15enum { REQ_QUIT, REQ_READ, REQ_WRITE, REQ_OPEN, REQ_CLOSE };
13#define REQ_READ 1
14#define REQ_WRITE 2
15 16
16typedef struct { 17typedef struct {
17 char stack[STACKSIZE]; 18 char stack[STACKSIZE];
18} aio_thread; 19} aio_thread;
19 20
… …
24/* read/write */ 25/* read/write */
25 int fd; 26 int fd;
26 off_t offset; 27 off_t offset;
27 size_t length; 28 size_t length;
28 ssize_t result; 29 ssize_t result;
30 mode_t mode; /* open */
29 int errorno; 31 int errorno;
30
31 SV *data, *callback; 32 SV *data, *callback;
32 void *dataptr; 33 void *dataptr;
33 STRLEN dataoffset; 34 STRLEN dataoffset;
34} aio_cb; 35} aio_cb;
35 36
… …
61end_thread(void) 62end_thread(void)
62{ 63{
63 aio_req req; 64 aio_req req;
64 New (0, req, 1, aio_cb); 65 New (0, req, 1, aio_cb);
65 req->type = REQ_QUIT; 66 req->type = REQ_QUIT;
67 write (reqpipe[1], &req, sizeof (aio_req));
68}
69
70static void
71send_req (aio_req req)
72{
73 nreqs++;
66 write (reqpipe[1], &req, sizeof (aio_req)); 74 write (reqpipe[1], &req, sizeof (aio_req));
67} 75}
68 76
69static void 77static void
70read_write (pTHX_ int dowrite, int fd, off_t offset, size_t length, 78read_write (pTHX_ int dowrite, int fd, off_t offset, size_t length,
… …
106 req->length = length; 114 req->length = length;
107 req->data = SvREFCNT_inc (data); 115 req->data = SvREFCNT_inc (data);
108 req->dataptr = (char *)svptr + dataoffset; 116 req->dataptr = (char *)svptr + dataoffset;
109 req->callback = SvREFCNT_inc (callback); 117 req->callback = SvREFCNT_inc (callback);
110 118
111 nreqs++; 119 send_req (req);
112 write (reqpipe[1], &req, sizeof (aio_req));
113} 120}
114 121
115static int 122static int
116poll_cb (pTHX) 123poll_cb (pTHX)
117{ 124{
… …
153 } 160 }
154 161
155 return count; 162 return count;
156} 163}
157 164
165static sigset_t fullsigset;
166
158#undef errno 167#undef errno
159#include <asm/unistd.h> 168#include <asm/unistd.h>
160 169
161static int 170static int
162aio_proc(void *thr_arg) 171aio_proc(void *thr_arg)
163{ 172{
164 aio_thread *thr = thr_arg; 173 aio_thread *thr = thr_arg;
165 int sig; 174 aio_req req;
166 int errno; 175 int errno;
167 aio_req req;
168 176
169 /* we rely on gcc's ability to create closures. */ 177 /* we rely on gcc's ability to create closures. */
170 _syscall3(int,lseek,int,fd,off_t,offset,int,whence); 178 _syscall3(int,lseek,int,fd,off_t,offset,int,whence)
171 _syscall3(int,read,int,fd,char *,buf,off_t,count); 179 _syscall3(int,read,int,fd,char *,buf,off_t,count)
172 _syscall3(int,write,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 _syscall1(int,close,int,fd)
173 183
174 /* first get rid of any signals */ 184 sigprocmask (SIG_SETMASK, &fullsigset, 0);
175 for (sig = 1; sig < _NSIG; sig++)
176 signal (sig, SIG_DFL);
177 185
178 signal (SIGPIPE, SIG_IGN);
179
180 /* then loop */ 186 /* then loop */
181 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 187 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
182 { 188 {
183 req->thread = thr; 189 req->thread = thr;
190 errno = 0;
184 191
185 if (req->type == REQ_READ || req->type == REQ_WRITE) 192 if (req->type == REQ_READ || req->type == REQ_WRITE)
186 { 193 {
187 errno = 0;
188
189 if (lseek (req->fd, req->offset, SEEK_SET) == req->offset) 194 if (lseek (req->fd, req->offset, SEEK_SET) == req->offset)
190 { 195 {
191 if (req->type == REQ_READ) 196 if (req->type == REQ_READ)
192 req->result = read (req->fd, req->dataptr, req->length); 197 req->result = read (req->fd, req->dataptr, req->length);
193 else 198 else
194 req->result = write(req->fd, req->dataptr, req->length); 199 req->result = write(req->fd, req->dataptr, req->length);
195 } 200 }
196 201 }
197 req->errorno = errno; 202 else if (req->type == REQ_OPEN)
203 {
204 req->result = open (req->dataptr, req->fd, req->mode);
205 }
206 else if (req->type == REQ_CLOSE)
207 {
208 req->result = close (req->fd);
198 } 209 }
199 else 210 else
200 { 211 {
201 write (respipe[1], (void *)&req, sizeof (req)); 212 write (respipe[1], (void *)&req, sizeof (req));
202 break; 213 break;
203 } 214 }
204 215
216 req->errorno = errno;
205 write (respipe[1], (void *)&req, sizeof (req)); 217 write (respipe[1], (void *)&req, sizeof (req));
206 } 218 }
207 219
208 return 0; 220 return 0;
209} 221}
210 222
211MODULE = Linux::AIO PACKAGE = Linux::AIO 223MODULE = Linux::AIO PACKAGE = Linux::AIO
212 224
213BOOT: 225BOOT:
214{ 226{
227 sigfillset (&fullsigset);
228 sigdelset (&fullsigset, SIGTERM);
229 sigdelset (&fullsigset, SIGQUIT);
230 sigdelset (&fullsigset, SIGABRT);
231 sigdelset (&fullsigset, SIGINT);
232
215 if (pipe (reqpipe) || pipe (respipe)) 233 if (pipe (reqpipe) || pipe (respipe))
216 croak ("unable to initialize request or result pipe"); 234 croak ("unable to initialize request or result pipe");
217 235
218 if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) 236 if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))
219 croak ("cannot set result pipe to nonblocking mode"); 237 croak ("cannot set result pipe to nonblocking mode");
… …
241 259
242 poll_cb (); 260 poll_cb ();
243 while (started > nthreads) 261 while (started > nthreads)
244 { 262 {
245 sched_yield (); 263 sched_yield ();
264 fcntl (respipe[0], F_SETFL, 0);
246 poll_cb (); 265 poll_cb ();
266 fcntl (respipe[0], F_SETFL, O_NONBLOCK);
247 } 267 }
248 268
249void 269void
250aio_read(fh,offset,length,data,dataoffset,callback) 270aio_read(fh,offset,length,data,dataoffset,callback)
251 PerlIO * fh 271 InOutStream fh
252 UV offset 272 UV offset
253 STRLEN length 273 IV length
254 SV * data 274 SV * data
255 STRLEN dataoffset 275 IV dataoffset
256 SV * callback 276 SV * callback
257 PROTOTYPE: $$$$$$ 277 PROTOTYPE: $$$$$$
258 ALIAS: 278 ALIAS:
259 aio_write = 1 279 aio_write = 1
260 CODE: 280 CODE:
261 SvUPGRADE (data, SVt_PV); 281 SvUPGRADE (data, SVt_PV);
262 SvPOK_on (data); 282 SvPOK_on (data);
263 read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 283 read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
264 284
285void
286aio_open(pathname,flags,mode,callback)
287 char * pathname
288 int flags
289 int mode
290 SV * callback
291 PROTOTYPE: $$$$
292 CODE:
293 aio_req req;
294
295 New (0, req, 1, aio_cb);
296
297 if (!req)
298 croak ("out of memory during aio_req allocation");
299
300 req->type = REQ_OPEN;
301 req->dataptr = pathname;
302 req->fd = flags;
303 req->mode = mode;
304 req->callback = SvREFCNT_inc (callback);
305
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)
319 croak ("out of memory during aio_req allocation");
320
321 req->type = REQ_CLOSE;
322 req->fd = PerlIO_fileno (fh);
323 req->callback = SvREFCNT_inc (callback);
324
325 send_req (req);
326
265int 327int
266poll_fileno() 328poll_fileno()
267 PROTOTYPE: 329 PROTOTYPE:
268 CODE: 330 CODE:
269 RETVAL = respipe[0]; 331 RETVAL = respipe[0];

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