ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/IO-AIO/AIO.xs
(Generate patch)

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.3 by root, Sun Jul 10 20:07:11 2005 UTC vs.
Revision 1.5 by root, Sun Jul 10 23:45:16 2005 UTC

1#define PERL_NO_GET_CONTEXT
2
3#include "EXTERN.h" 1#include "EXTERN.h"
4#include "perl.h" 2#include "perl.h"
5#include "XSUB.h" 3#include "XSUB.h"
6 4
7#include <sys/types.h> 5#include <sys/types.h>
… …
17 15
18typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 16typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */
19typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 17typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
20typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 18typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
21 19
22#if __i386 || __amd64
23# define STACKSIZE ( 256 * sizeof (long))
24#elif __ia64 20#if __ia64
25# define STACKSIZE (8192 * sizeof (long)) 21# define STACKSIZE 65536
26#else 22#else
27# define STACKSIZE ( 512 * sizeof (long)) 23# define STACKSIZE 4096
28#endif 24#endif
29 25
30enum { 26enum {
31 REQ_QUIT, 27 REQ_QUIT,
32 REQ_OPEN, REQ_CLOSE, 28 REQ_OPEN, REQ_CLOSE,
… …
55 51
56typedef aio_cb *aio_req; 52typedef aio_cb *aio_req;
57 53
58static int started; 54static int started;
59static int nreqs; 55static int nreqs;
56static int max_outstanding = 1<<30;
60static int respipe [2]; 57static int respipe [2];
61 58
62static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 59static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
63static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 60static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
64static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 61static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
65 62
66static volatile aio_req reqs, reqe; /* queue start, queue end */ 63static volatile aio_req reqs, reqe; /* queue start, queue end */
67static volatile aio_req ress, rese; /* queue start, queue end */ 64static volatile aio_req ress, rese; /* queue start, queue end */
65
66static void
67poll_wait ()
68{
69 if (!nreqs)
70 return;
71
72 fd_set rfd;
73 FD_ZERO(&rfd);
74 FD_SET(respipe [0], &rfd);
75
76 select (respipe [0] + 1, &rfd, 0, 0, 0);
77}
78
79static int
80poll_cb ()
81{
82 dSP;
83 int count = 0;
84 aio_req req;
85
86 {
87 /* read and signals sent by the worker threads */
88 char buf [32];
89 while (read (respipe [0], buf, 32) > 0)
90 ;
91 }
92
93 for (;;)
94 {
95 pthread_mutex_lock (&reslock);
96
97 req = ress;
98
99 if (ress)
100 {
101 ress = ress->next;
102 if (!ress) rese = 0;
103 }
104
105 pthread_mutex_unlock (&reslock);
106
107 if (!req)
108 break;
109
110 nreqs--;
111
112 if (req->type == REQ_QUIT)
113 started--;
114 else
115 {
116 int errorno = errno;
117 errno = req->errorno;
118
119 if (req->type == REQ_READ)
120 SvCUR_set (req->data, req->dataoffset
121 + req->result > 0 ? req->result : 0);
122
123 if (req->data)
124 SvREFCNT_dec (req->data);
125
126 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
127 {
128 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
129 PL_laststatval = req->result;
130 PL_statcache = *(req->statdata);
131
132 Safefree (req->statdata);
133 }
134
135 PUSHMARK (SP);
136 XPUSHs (sv_2mortal (newSViv (req->result)));
137
138 if (req->type == REQ_OPEN)
139 {
140 /* convert fd to fh */
141 SV *fh;
142
143 PUTBACK;
144 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
145 SPAGAIN;
146
147 fh = POPs;
148
149 PUSHMARK (SP);
150 XPUSHs (fh);
151 }
152
153 PUTBACK;
154 call_sv (req->callback, G_VOID | G_EVAL);
155 SPAGAIN;
156
157 if (req->callback)
158 SvREFCNT_dec (req->callback);
159
160 errno = errorno;
161 count++;
162 }
163
164 Safefree (req);
165 }
166
167 return count;
168}
68 169
69static void *aio_proc(void *arg); 170static void *aio_proc(void *arg);
70 171
71static void 172static void
72start_thread (void) 173start_thread (void)
… …
105 else 206 else
106 reqe = reqs = req; 207 reqe = reqs = req;
107 208
108 pthread_cond_signal (&reqwait); 209 pthread_cond_signal (&reqwait);
109 pthread_mutex_unlock (&reqlock); 210 pthread_mutex_unlock (&reqlock);
211
212 while (nreqs > max_outstanding)
213 {
214 poll_wait ();
215 poll_cb ();
216 }
110} 217}
111 218
112static void 219static void
113end_thread (void) 220end_thread (void)
114{ 221{
… …
118 225
119 send_req (req); 226 send_req (req);
120} 227}
121 228
122static void 229static void
123read_write (pTHX_
124 int dowrite, int fd, off_t offset, size_t length, 230read_write (int dowrite, int fd, off_t offset, size_t length,
125 SV *data, STRLEN dataoffset, SV *callback) 231 SV *data, STRLEN dataoffset, SV *callback)
126{ 232{
127 aio_req req; 233 aio_req req;
128 STRLEN svlen; 234 STRLEN svlen;
129 char *svptr = SvPV (data, svlen); 235 char *svptr = SvPV (data, svlen);
… …
166 req->callback = SvREFCNT_inc (callback); 272 req->callback = SvREFCNT_inc (callback);
167 273
168 send_req (req); 274 send_req (req);
169} 275}
170 276
171static void
172poll_wait ()
173{
174 if (!nreqs)
175 return;
176
177 fd_set rfd;
178 FD_ZERO(&rfd);
179 FD_SET(respipe [0], &rfd);
180
181 select (respipe [0] + 1, &rfd, 0, 0, 0);
182}
183
184static int
185poll_cb (pTHX)
186{
187 dSP;
188 int count = 0;
189 aio_req req;
190
191 {
192 /* read and signals sent by the worker threads */
193 char buf [32];
194 while (read (respipe [0], buf, 32) > 0)
195 ;
196 }
197
198 for (;;)
199 {
200 pthread_mutex_lock (&reslock);
201
202 req = ress;
203
204 if (ress)
205 {
206 ress = ress->next;
207 if (!ress) rese = 0;
208 }
209
210 pthread_mutex_unlock (&reslock);
211
212 if (!req)
213 break;
214
215 nreqs--;
216
217 if (req->type == REQ_QUIT)
218 started--;
219 else
220 {
221 int errorno = errno;
222 errno = req->errorno;
223
224 if (req->type == REQ_READ)
225 SvCUR_set (req->data, req->dataoffset
226 + req->result > 0 ? req->result : 0);
227
228 if (req->data)
229 SvREFCNT_dec (req->data);
230
231 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
232 {
233 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
234 PL_laststatval = req->result;
235 PL_statcache = *(req->statdata);
236
237 Safefree (req->statdata);
238 }
239
240 PUSHMARK (SP);
241 XPUSHs (sv_2mortal (newSViv (req->result)));
242
243 if (req->type == REQ_OPEN)
244 {
245 /* convert fd to fh */
246 SV *fh;
247
248 PUTBACK;
249 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
250 SPAGAIN;
251
252 fh = POPs;
253
254 PUSHMARK (SP);
255 XPUSHs (fh);
256 }
257
258 PUTBACK;
259 call_sv (req->callback, G_VOID | G_EVAL);
260 SPAGAIN;
261
262 if (req->callback)
263 SvREFCNT_dec (req->callback);
264
265 errno = errorno;
266 count++;
267 }
268
269 Safefree (req);
270 }
271
272 return count;
273}
274
275static void * 277static void *
276aio_proc (void *thr_arg) 278aio_proc (void *thr_arg)
277{ 279{
278 aio_req req; 280 aio_req req;
279 int type; 281 int type;
… …
395 } 397 }
396 398
397 while (started > nthreads) 399 while (started > nthreads)
398 { 400 {
399 poll_wait (); 401 poll_wait ();
400 poll_cb (aTHX); 402 poll_cb ();
401 } 403 }
402} 404}
405
406int
407max_outstanding(nreqs)
408 int nreqs
409 PROTOTYPE: $
410 CODE:
411 RETVAL = max_outstanding;
412 max_outstanding = nreqs;
403 413
404void 414void
405aio_open(pathname,flags,mode,callback) 415aio_open(pathname,flags,mode,callback)
406 SV * pathname 416 SV * pathname
407 int flags 417 int flags
… …
460 SV * data 470 SV * data
461 IV dataoffset 471 IV dataoffset
462 SV * callback 472 SV * callback
463 PROTOTYPE: $$$$$$ 473 PROTOTYPE: $$$$$$
464 CODE: 474 CODE:
465 read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 475 read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466 476
467void 477void
468aio_write(fh,offset,length,data,dataoffset,callback) 478aio_write(fh,offset,length,data,dataoffset,callback)
469 OutputStream fh 479 OutputStream fh
470 UV offset 480 UV offset
… …
472 SV * data 482 SV * data
473 IV dataoffset 483 IV dataoffset
474 SV * callback 484 SV * callback
475 PROTOTYPE: $$$$$$ 485 PROTOTYPE: $$$$$$
476 CODE: 486 CODE:
477 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 487 read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478 488
479void 489void
480aio_readahead(fh,offset,length,callback) 490aio_readahead(fh,offset,length,callback)
481 InputStream fh 491 InputStream fh
482 UV offset 492 UV offset
… …
574 584
575int 585int
576poll_cb(...) 586poll_cb(...)
577 PROTOTYPE: 587 PROTOTYPE:
578 CODE: 588 CODE:
579 RETVAL = poll_cb (aTHX); 589 RETVAL = poll_cb ();
580 OUTPUT: 590 OUTPUT:
581 RETVAL 591 RETVAL
582 592
583void 593void
584poll_wait() 594poll_wait()

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines