… | |
… | |
55 | Stat_t *statdata; |
55 | Stat_t *statdata; |
56 | } aio_cb; |
56 | } aio_cb; |
57 | |
57 | |
58 | typedef aio_cb *aio_req; |
58 | typedef aio_cb *aio_req; |
59 | |
59 | |
60 | static int started; |
60 | static int started, wanted; |
61 | static volatile int nreqs; |
61 | static volatile int nreqs; |
62 | static int max_outstanding = 1<<30; |
62 | static int max_outstanding = 1<<30; |
63 | static int respipe [2]; |
63 | static int respipe [2]; |
64 | |
64 | |
65 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
65 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
66 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
66 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
67 | static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER; |
|
|
68 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
67 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
69 | |
68 | |
70 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
69 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
71 | static volatile aio_req ress, rese; /* queue start, queue end */ |
70 | static volatile aio_req ress, rese; /* queue start, queue end */ |
72 | |
71 | |
… | |
… | |
76 | SvREFCNT_dec (req->data); |
75 | SvREFCNT_dec (req->data); |
77 | |
76 | |
78 | if (req->fh) |
77 | if (req->fh) |
79 | SvREFCNT_dec (req->fh); |
78 | SvREFCNT_dec (req->fh); |
80 | |
79 | |
81 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
80 | if (req->statdata) |
82 | Safefree (req->statdata); |
81 | Safefree (req->statdata); |
83 | |
82 | |
84 | if (req->callback) |
83 | if (req->callback) |
85 | SvREFCNT_dec (req->callback); |
84 | SvREFCNT_dec (req->callback); |
86 | |
85 | |
… | |
… | |
104 | poll_cb () |
103 | poll_cb () |
105 | { |
104 | { |
106 | dSP; |
105 | dSP; |
107 | int count = 0; |
106 | int count = 0; |
108 | int do_croak = 0; |
107 | int do_croak = 0; |
109 | aio_req req, prv; |
108 | aio_req req; |
110 | |
109 | |
|
|
110 | for (;;) |
|
|
111 | { |
111 | pthread_mutex_lock (&reslock); |
112 | pthread_mutex_lock (&reslock); |
|
|
113 | req = ress; |
112 | |
114 | |
113 | { |
115 | if (req) |
|
|
116 | { |
|
|
117 | ress = req->next; |
|
|
118 | |
|
|
119 | if (!ress) |
|
|
120 | { |
114 | /* read any signals sent by the worker threads */ |
121 | /* read any signals sent by the worker threads */ |
115 | char buf [32]; |
122 | char buf [32]; |
116 | while (read (respipe [0], buf, 32) == 32) |
123 | while (read (respipe [0], buf, 32) == 32) |
|
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124 | ; |
|
|
125 | |
|
|
126 | rese = 0; |
|
|
127 | } |
117 | ; |
128 | } |
118 | } |
|
|
119 | |
129 | |
120 | req = ress; |
|
|
121 | ress = rese = 0; |
|
|
122 | |
|
|
123 | pthread_mutex_unlock (&reslock); |
130 | pthread_mutex_unlock (&reslock); |
124 | |
131 | |
125 | while (req) |
132 | if (!req) |
126 | { |
133 | break; |
|
|
134 | |
127 | nreqs--; |
135 | nreqs--; |
128 | |
136 | |
129 | if (req->type == REQ_QUIT) |
137 | if (req->type == REQ_QUIT) |
130 | started--; |
138 | started--; |
131 | else |
139 | else |
132 | { |
140 | { |
133 | int errorno = errno; |
141 | int errorno = errno; |
134 | errno = req->errorno; |
142 | errno = req->errorno; |
135 | |
143 | |
136 | if (req->type == REQ_READ) |
144 | if (req->type == REQ_READ) |
137 | SvCUR_set (req->data, req->dataoffset |
145 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
138 | + req->result > 0 ? req->result : 0); |
|
|
139 | |
146 | |
140 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
147 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
|
|
148 | SvREADONLY_off (req->data); |
|
|
149 | |
|
|
150 | if (req->statdata) |
141 | { |
151 | { |
142 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
152 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
143 | PL_laststatval = req->result; |
153 | PL_laststatval = req->result; |
144 | PL_statcache = *(req->statdata); |
154 | PL_statcache = *(req->statdata); |
145 | } |
155 | } |
… | |
… | |
166 | if (SvOK (req->callback)) |
176 | if (SvOK (req->callback)) |
167 | { |
177 | { |
168 | PUTBACK; |
178 | PUTBACK; |
169 | call_sv (req->callback, G_VOID | G_EVAL); |
179 | call_sv (req->callback, G_VOID | G_EVAL); |
170 | SPAGAIN; |
180 | SPAGAIN; |
|
|
181 | |
|
|
182 | if (SvTRUE (ERRSV)) |
|
|
183 | { |
|
|
184 | free_req (req); |
|
|
185 | croak (0); |
|
|
186 | } |
171 | } |
187 | } |
172 | |
188 | |
173 | LEAVE; |
189 | LEAVE; |
174 | |
190 | |
175 | do_croak = SvTRUE (ERRSV); |
|
|
176 | |
|
|
177 | errno = errorno; |
191 | errno = errorno; |
178 | count++; |
192 | count++; |
179 | } |
193 | } |
180 | |
194 | |
181 | prv = req; |
|
|
182 | req = req->next; |
|
|
183 | free_req (prv); |
195 | free_req (req); |
184 | |
|
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185 | if (do_croak) |
|
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186 | croak (0); |
|
|
187 | } |
196 | } |
188 | |
197 | |
189 | return count; |
198 | return count; |
190 | } |
199 | } |
191 | |
200 | |
… | |
… | |
198 | pthread_t tid; |
207 | pthread_t tid; |
199 | pthread_attr_t attr; |
208 | pthread_attr_t attr; |
200 | |
209 | |
201 | pthread_attr_init (&attr); |
210 | pthread_attr_init (&attr); |
202 | pthread_attr_setstacksize (&attr, STACKSIZE); |
211 | pthread_attr_setstacksize (&attr, STACKSIZE); |
203 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
212 | // pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
204 | |
213 | |
205 | sigfillset (&fullsigset); |
214 | sigfillset (&fullsigset); |
206 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
215 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
207 | |
216 | |
208 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
217 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
… | |
… | |
212 | } |
221 | } |
213 | |
222 | |
214 | static void |
223 | static void |
215 | send_req (aio_req req) |
224 | send_req (aio_req req) |
216 | { |
225 | { |
|
|
226 | while (started < wanted && nreqs >= started) |
|
|
227 | start_thread (); |
|
|
228 | |
217 | nreqs++; |
229 | nreqs++; |
218 | |
230 | |
219 | pthread_mutex_lock (&reqlock); |
231 | pthread_mutex_lock (&reqlock); |
220 | |
232 | |
221 | req->next = 0; |
233 | req->next = 0; |
… | |
… | |
229 | reqe = reqs = req; |
241 | reqe = reqs = req; |
230 | |
242 | |
231 | pthread_cond_signal (&reqwait); |
243 | pthread_cond_signal (&reqwait); |
232 | pthread_mutex_unlock (&reqlock); |
244 | pthread_mutex_unlock (&reqlock); |
233 | |
245 | |
234 | while (nreqs > max_outstanding) |
246 | if (nreqs > max_outstanding) |
|
|
247 | for (;;) |
235 | { |
248 | { |
|
|
249 | poll_cb (); |
|
|
250 | |
|
|
251 | if (nreqs <= max_outstanding) |
|
|
252 | break; |
|
|
253 | |
236 | poll_wait (); |
254 | poll_wait (); |
237 | poll_cb (); |
|
|
238 | } |
255 | } |
239 | } |
256 | } |
240 | |
257 | |
241 | static void |
258 | static void |
242 | end_thread (void) |
259 | end_thread (void) |
243 | { |
260 | { |
… | |
… | |
246 | req->type = REQ_QUIT; |
263 | req->type = REQ_QUIT; |
247 | |
264 | |
248 | send_req (req); |
265 | send_req (req); |
249 | } |
266 | } |
250 | |
267 | |
251 | |
|
|
252 | static void min_parallel (int nthreads) |
268 | static void min_parallel (int nthreads) |
253 | { |
269 | { |
254 | while (nthreads > started) |
270 | if (wanted < nthreads) |
255 | start_thread (); |
271 | wanted = nthreads; |
256 | } |
272 | } |
257 | |
273 | |
258 | static void max_parallel (int nthreads) |
274 | static void max_parallel (int nthreads) |
259 | { |
275 | { |
260 | int cur = started; |
276 | int cur = started; |
|
|
277 | |
|
|
278 | if (wanted > nthreads) |
|
|
279 | wanted = nthreads; |
|
|
280 | |
261 | while (cur > nthreads) |
281 | while (cur > wanted) |
262 | { |
282 | { |
263 | end_thread (); |
283 | end_thread (); |
264 | cur--; |
284 | cur--; |
265 | } |
285 | } |
266 | |
286 | |
267 | while (started > nthreads) |
287 | while (started > wanted) |
268 | { |
288 | { |
269 | poll_wait (); |
289 | poll_wait (); |
270 | poll_cb (); |
290 | poll_cb (); |
271 | } |
291 | } |
272 | } |
292 | } |
… | |
… | |
283 | croak ("cannot set result pipe to nonblocking mode"); |
303 | croak ("cannot set result pipe to nonblocking mode"); |
284 | } |
304 | } |
285 | |
305 | |
286 | static void atfork_prepare (void) |
306 | static void atfork_prepare (void) |
287 | { |
307 | { |
288 | pthread_mutex_lock (&frklock); |
|
|
289 | pthread_mutex_lock (&reqlock); |
308 | pthread_mutex_lock (&reqlock); |
290 | pthread_mutex_lock (&reslock); |
309 | pthread_mutex_lock (&reslock); |
291 | } |
310 | } |
292 | |
311 | |
293 | static void atfork_parent (void) |
312 | static void atfork_parent (void) |
294 | { |
313 | { |
295 | pthread_mutex_unlock (&reslock); |
314 | pthread_mutex_unlock (&reslock); |
296 | pthread_mutex_unlock (&reqlock); |
315 | pthread_mutex_unlock (&reqlock); |
297 | pthread_mutex_unlock (&frklock); |
|
|
298 | } |
316 | } |
299 | |
317 | |
300 | static void atfork_child (void) |
318 | static void atfork_child (void) |
301 | { |
319 | { |
302 | int restart = started; |
320 | aio_req prv; |
|
|
321 | |
303 | started = 0; |
322 | started = 0; |
304 | |
323 | |
305 | while (reqs) |
324 | while (reqs) |
306 | { |
325 | { |
307 | free_req (reqs); |
326 | prv = reqs; |
308 | reqs = reqs->next; |
327 | reqs = prv->next; |
|
|
328 | free_req (prv); |
309 | } |
329 | } |
310 | |
330 | |
311 | reqs = reqe = 0; |
331 | reqs = reqe = 0; |
312 | |
332 | |
313 | while (ress) |
333 | while (ress) |
314 | { |
334 | { |
315 | free_req (ress); |
335 | prv = ress; |
316 | ress = ress->next; |
336 | ress = prv->next; |
|
|
337 | free_req (prv); |
317 | } |
338 | } |
318 | |
339 | |
319 | ress = rese = 0; |
340 | ress = rese = 0; |
320 | |
341 | |
321 | close (respipe [0]); |
342 | close (respipe [0]); |
322 | close (respipe [1]); |
343 | close (respipe [1]); |
323 | |
|
|
324 | create_pipe (); |
344 | create_pipe (); |
325 | |
345 | |
326 | atfork_parent (); |
346 | atfork_parent (); |
327 | |
|
|
328 | min_parallel (restart); |
|
|
329 | } |
347 | } |
330 | |
348 | |
331 | /*****************************************************************************/ |
349 | /*****************************************************************************/ |
332 | /* work around various missing functions */ |
350 | /* work around various missing functions */ |
333 | |
351 | |
… | |
… | |
496 | \ |
514 | \ |
497 | Newz (0, req, 1, aio_cb); \ |
515 | Newz (0, req, 1, aio_cb); \ |
498 | if (!req) \ |
516 | if (!req) \ |
499 | croak ("out of memory during aio_req allocation"); \ |
517 | croak ("out of memory during aio_req allocation"); \ |
500 | \ |
518 | \ |
501 | req->callback = SvREFCNT_inc (callback); |
519 | req->callback = newSVsv (callback); |
502 | |
520 | |
503 | MODULE = IO::AIO PACKAGE = IO::AIO |
521 | MODULE = IO::AIO PACKAGE = IO::AIO |
504 | |
522 | |
505 | PROTOTYPES: ENABLE |
523 | PROTOTYPES: ENABLE |
506 | |
524 | |
… | |
… | |
619 | : IoOFP (sv_2io (fh))); |
637 | : IoOFP (sv_2io (fh))); |
620 | req->offset = offset; |
638 | req->offset = offset; |
621 | req->length = length; |
639 | req->length = length; |
622 | req->data = SvREFCNT_inc (data); |
640 | req->data = SvREFCNT_inc (data); |
623 | req->dataptr = (char *)svptr + dataoffset; |
641 | req->dataptr = (char *)svptr + dataoffset; |
624 | req->callback = SvREFCNT_inc (callback); |
642 | |
|
|
643 | if (!SvREADONLY (data)) |
|
|
644 | { |
|
|
645 | SvREADONLY_on (data); |
|
|
646 | req->data2ptr = (void *)data; |
|
|
647 | } |
625 | |
648 | |
626 | send_req (req); |
649 | send_req (req); |
627 | } |
650 | } |
628 | } |
651 | } |
629 | |
652 | |
… | |
… | |
658 | { |
681 | { |
659 | dREQ; |
682 | dREQ; |
660 | |
683 | |
661 | New (0, req->statdata, 1, Stat_t); |
684 | New (0, req->statdata, 1, Stat_t); |
662 | if (!req->statdata) |
685 | if (!req->statdata) |
|
|
686 | { |
|
|
687 | free_req (req); |
663 | croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)"); |
688 | croak ("out of memory during aio_req->statdata allocation"); |
|
|
689 | } |
664 | |
690 | |
665 | if (SvPOK (fh_or_path)) |
691 | if (SvPOK (fh_or_path)) |
666 | { |
692 | { |
667 | req->type = ix; |
693 | req->type = ix; |
668 | req->data = newSVsv (fh_or_path); |
694 | req->data = newSVsv (fh_or_path); |