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Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.5 by root, Tue Aug 14 18:06:37 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>
9#include <signal.h>
8#include <sched.h> 10#include <sched.h>
9 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
10#define STACKSIZE 1024 /* yeah */ 16#define STACKSIZE 1024 /* yeah */
11 17
12#define REQ_QUIT 0 18enum { REQ_QUIT, REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, REQ_STAT, REQ_LSTAT, REQ_FSTAT};
13#define REQ_READ 1
14#define REQ_WRITE 2
15 19
16typedef struct { 20typedef struct {
17 char stack[STACKSIZE]; 21 char stack[STACKSIZE];
18} aio_thread; 22} aio_thread;
19 23
20typedef struct { 24typedef struct {
21 int type; 25 int type;
22 aio_thread *thread; 26 aio_thread *thread;
23 27
24/* read/write */
25 int fd; 28 int fd;
26 off_t offset; 29 off_t offset;
27 size_t length; 30 size_t length;
28 ssize_t result; 31 ssize_t result;
32 mode_t mode; /* open */
29 int errorno; 33 int errorno;
30
31 SV *data, *callback; 34 SV *data, *callback;
32 void *dataptr; 35 void *dataptr;
33 STRLEN dataoffset; 36 STRLEN dataoffset;
37
38 struct stat64 *statdata;
34} aio_cb; 39} aio_cb;
35 40
36typedef aio_cb *aio_req; 41typedef aio_cb *aio_req;
37 42
38static int started; 43static int started;
… …
65 req->type = REQ_QUIT; 70 req->type = REQ_QUIT;
66 write (reqpipe[1], &req, sizeof (aio_req)); 71 write (reqpipe[1], &req, sizeof (aio_req));
67} 72}
68 73
69static void 74static void
75send_req (aio_req req)
76{
77 nreqs++;
78 write (reqpipe[1], &req, sizeof (aio_req));
79}
80
81static void
70read_write (pTHX_ int dowrite, int fd, off_t offset, size_t length, 82read_write (pTHX_ int dowrite, int fd, off_t offset, size_t length,
71 SV *data, STRLEN dataoffset, SV*callback) 83 SV *data, STRLEN dataoffset, SV*callback)
72{ 84{
73 aio_req req; 85 aio_req req;
74 STRLEN svlen; 86 STRLEN svlen;
75 char *svptr = SvPV (data, svlen); 87 char *svptr = SvPV (data, svlen);
88
89 SvUPGRADE (data, SVt_PV);
90 SvPOK_on (data);
76 91
77 if (dataoffset < 0) 92 if (dataoffset < 0)
78 dataoffset += svlen; 93 dataoffset += svlen;
79 94
80 if (dataoffset < 0 || dataoffset > svlen) 95 if (dataoffset < 0 || dataoffset > svlen)
… …
93 } 108 }
94 109
95 if (length < 0) 110 if (length < 0)
96 croak ("length must not be negative"); 111 croak ("length must not be negative");
97 112
98 New (0, req, 1, aio_cb); 113 Newz (0, req, 1, aio_cb);
99 114
100 if (!req) 115 if (!req)
101 croak ("out of memory during aio_req allocation"); 116 croak ("out of memory during aio_req allocation");
102 117
103 req->type = dowrite ? REQ_WRITE : REQ_READ; 118 req->type = dowrite ? REQ_WRITE : REQ_READ;
104 req->fd = fd; 119 req->fd = fd;
105 req->offset = offset; 120 req->offset = offset;
106 req->length = length; 121 req->length = length;
107 req->data = SvREFCNT_inc (data); 122 req->data = SvREFCNT_inc (data);
108 req->dataptr = svptr + dataoffset; 123 req->dataptr = (char *)svptr + dataoffset;
109 req->callback = SvREFCNT_inc (callback); 124 req->callback = SvREFCNT_inc (callback);
110 125
111 nreqs++; 126 send_req (req);
112 write (reqpipe[1], &req, sizeof (aio_req));
113} 127}
114 128
115static int 129static int
116poll_cb (pTHX) 130poll_cb (pTHX)
117{ 131{
… …
130 { 144 {
131 int errorno = errno; 145 int errorno = errno;
132 errno = req->errorno; 146 errno = req->errorno;
133 147
134 if (req->type == REQ_READ) 148 if (req->type == REQ_READ)
135 SvCUR_set (req->data, req->result > 0 149 SvCUR_set (req->data, req->dataoffset
136 ? req->dataoffset + req->result 150 + req->result > 0 ? req->result : 0);
137 : req->dataoffset); 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 }
138 175
139 PUSHMARK (SP); 176 PUSHMARK (SP);
140 XPUSHs (sv_2mortal (newSViv (req->result))); 177 XPUSHs (sv_2mortal (newSViv (req->result)));
141 PUTBACK; 178 PUTBACK;
142 call_sv (req->callback, G_VOID); 179 call_sv (req->callback, G_VOID);
143 SPAGAIN; 180 SPAGAIN;
144 181
145 SvREFCNT_dec (req->data); 182 if (req->callback)
146 SvREFCNT_dec (req->callback); 183 SvREFCNT_dec (req->callback);
147 184
148 errno = errorno; 185 errno = errorno;
149 nreqs--; 186 nreqs--;
150 count++; 187 count++;
151 } 188 }
… …
154 } 191 }
155 192
156 return count; 193 return count;
157} 194}
158 195
196static sigset_t fullsigset;
197
159#undef errno 198#undef errno
160#include <asm/unistd.h> 199#include <asm/unistd.h>
161 200
162static int 201static int
163aio_proc(void *thr_arg) 202aio_proc(void *thr_arg)
164{ 203{
165 aio_thread *thr = thr_arg; 204 aio_thread *thr = thr_arg;
166 int sig; 205 aio_req req;
167 int errno; 206 int errno;
168 aio_req req;
169 207
208 /* this is very much x86 and kernel-specific :(:(:( */
170 /* we rely on gcc's ability to create closures. */ 209 /* we rely on gcc's ability to create closures. */
171 _syscall3(int,lseek,int,fd,off_t,offset,int,whence);
172 _syscall3(int,read,int,fd,char *,buf,off_t,count); 210 _syscall3(int,read,int,fd,char *,buf,size_t,count)
173 _syscall3(int,write,int,fd,char *,buf,off_t,count); 211 _syscall3(int,write,int,fd,char *,buf,size_t,count)
174 212
175 /* first get rid of any signals */ 213 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode)
176 for (sig = 1; sig < _NSIG; sig++) 214 _syscall1(int,close,int,fd)
177 signal (sig, SIG_DFL);
178 215
179 signal (SIGPIPE, SIG_IGN); 216 _syscall5(int,pread,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
180 217 _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)
222
223 sigprocmask (SIG_SETMASK, &fullsigset, 0);
224
181 /* then loop */ 225 /* then loop */
182 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 226 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
183 { 227 {
184 req->thread = thr; 228 req->thread = thr;
229 errno = 0; /* strictly unnecessary */
185 230
186 if (req->type == REQ_READ || req->type == REQ_WRITE)
187 {
188 errno = 0;
189
190 if (lseek (req->fd, req->offset, SEEK_SET) == req->offset)
191 {
192 if (req->type == REQ_READ) 231 if (req->type == REQ_READ)
193 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);
194 else 233 else if (req->type == REQ_WRITE)
195 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);
196 } 235 else if (req->type == REQ_OPEN)
197 236 req->result = open (req->dataptr, req->fd, req->mode);
198 req->errorno = errno; 237 else if (req->type == REQ_CLOSE)
199 } 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);
200 else 245 else
201 { 246 {
202 write (respipe[1], (void *)&req, sizeof (req)); 247 write (respipe[1], (void *)&req, sizeof (req));
203 break; 248 break;
204 } 249 }
205 250
251 req->errorno = errno;
206 write (respipe[1], (void *)&req, sizeof (req)); 252 write (respipe[1], (void *)&req, sizeof (req));
207 } 253 }
208 254
209 return 0; 255 return 0;
210} 256}
211 257
212MODULE = Linux::AIO PACKAGE = Linux::AIO 258MODULE = Linux::AIO PACKAGE = Linux::AIO
213 259
214BOOT: 260BOOT:
215{ 261{
262 sigfillset (&fullsigset);
263 sigdelset (&fullsigset, SIGTERM);
264 sigdelset (&fullsigset, SIGQUIT);
265 sigdelset (&fullsigset, SIGABRT);
266 sigdelset (&fullsigset, SIGINT);
267
216 if (pipe (reqpipe) || pipe (respipe)) 268 if (pipe (reqpipe) || pipe (respipe))
217 croak ("unable to initialize request or result pipe"); 269 croak ("unable to initialize request or result pipe");
218 270
219 if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) 271 if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))
220 croak ("cannot set result pipe to nonblocking mode"); 272 croak ("cannot set result pipe to nonblocking mode");
… …
238 { 290 {
239 end_thread (); 291 end_thread ();
240 cur--; 292 cur--;
241 } 293 }
242 294
243 poll_cb ();
244 while (started > nthreads) 295 while (started > nthreads)
245 { 296 {
246 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);
247 poll_cb (); 302 poll_cb ();
248 } 303 }
249 304
250void 305void
306aio_open(pathname,flags,mode,callback)
307 SV * pathname
308 int flags
309 int mode
310 SV * callback
311 PROTOTYPE: $$$$
312 CODE:
313 aio_req req;
314
315 Newz (0, req, 1, aio_cb);
316
317 if (!req)
318 croak ("out of memory during aio_req allocation");
319
320 req->type = REQ_OPEN;
321 req->data = newSVsv (pathname);
322 req->dataptr = SvPV_nolen (req->data);
323 req->fd = flags;
324 req->mode = mode;
325 req->callback = SvREFCNT_inc (callback);
326
327 send_req (req);
328
329void
330aio_close(fh,callback)
331 InputStream fh
332 SV * callback
333 PROTOTYPE: $$
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
251aio_read(fh,offset,length,data,dataoffset,callback) 349aio_read(fh,offset,length,data,dataoffset,callback)
252 PerlIO * fh 350 InputStream fh
253 unsigned long offset 351 UV offset
254 long length 352 IV length
255 SV * data 353 SV * data
256 STRLEN dataoffset 354 IV dataoffset
257 SV * callback 355 SV * callback
258 PROTOTYPE: $$$$$$ 356 PROTOTYPE: $$$$$$
259 ALIAS: 357 CODE:
260 aio_write = 1
261 CODE:
262 sv_upgrade (data, SVt_PV);
263 read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 358 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
359
360void
361aio_write(fh,offset,length,data,dataoffset,callback)
362 OutputStream fh
363 UV offset
364 IV length
365 SV * data
366 IV dataoffset
367 SV * callback
368 PROTOTYPE: $$$$$$
369 CODE:
370 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
371
372void
373aio_stat(fh_or_path,callback)
374 SV * fh_or_path
375 SV * callback
376 PROTOTYPE: $$
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);
264 407
265int 408int
266poll_fileno() 409poll_fileno()
267 PROTOTYPE: 410 PROTOTYPE:
268 CODE: 411 CODE:
269 RETVAL = respipe[0]; 412 RETVAL = respipe[0];
270 OUTPUT: 413 OUTPUT:
271 RETVAL 414 RETVAL
272 415
273int 416int
274poll_cb() 417poll_cb(...)
275 PROTOTYPE: 418 PROTOTYPE:
276 CODE: 419 CODE:
277 RETVAL = poll_cb (aTHX); 420 RETVAL = poll_cb (aTHX);
278 OUTPUT: 421 OUTPUT:
279 RETVAL 422 RETVAL

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