… | |
… | |
64 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
64 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
65 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
65 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
66 | |
66 | |
67 | typedef struct aio_cb |
67 | typedef struct aio_cb |
68 | { |
68 | { |
69 | struct aio_cb *grp, *grp_prev, *grp_next; |
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|
70 | |
|
|
71 | struct aio_cb *volatile next; |
69 | struct aio_cb *volatile next; |
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|
70 | |
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71 | struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; |
72 | |
72 | |
73 | SV *self; /* the perl counterpart of this request, if any */ |
73 | SV *self; /* the perl counterpart of this request, if any */ |
74 | |
74 | |
75 | SV *data, *callback; |
75 | SV *data, *callback; |
76 | SV *fh, *fh2; |
76 | SV *fh, *fh2; |
… | |
… | |
101 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
101 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
102 | |
102 | |
103 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
103 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
104 | static volatile aio_req ress, rese; /* queue start, queue end */ |
104 | static volatile aio_req ress, rese; /* queue start, queue end */ |
105 | |
105 | |
|
|
106 | static void req_invoke (aio_req req); |
106 | static void req_free (aio_req req); |
107 | static void req_free (aio_req req); |
107 | |
108 | |
108 | /* must be called at most once */ |
109 | /* must be called at most once */ |
109 | static SV *req_sv (aio_req req, const char *klass) |
110 | static SV *req_sv (aio_req req, const char *klass) |
110 | { |
111 | { |
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|
112 | if (!req->self) |
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|
113 | { |
111 | req->self = (SV *)newHV (); |
114 | req->self = (SV *)newHV (); |
112 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
115 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
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|
116 | } |
113 | |
117 | |
114 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
118 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
115 | } |
119 | } |
116 | |
120 | |
117 | static aio_req SvAIO_REQ (SV *sv) |
121 | static aio_req SvAIO_REQ (SV *sv) |
118 | { |
122 | { |
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|
123 | MAGIC *mg; |
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|
124 | |
119 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
125 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
120 | croak ("object of class " AIO_REQ_KLASS " expected"); |
126 | croak ("object of class " AIO_REQ_KLASS " expected"); |
121 | |
127 | |
122 | MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
128 | mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
123 | |
129 | |
124 | return mg ? (aio_req)mg->mg_ptr : 0; |
130 | return mg ? (aio_req)mg->mg_ptr : 0; |
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131 | } |
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|
132 | |
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|
133 | static void aio_grp_feed (aio_req grp) |
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|
134 | { |
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135 | while (grp->length < grp->fd2) |
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|
136 | { |
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|
137 | int old_len = grp->length; |
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138 | |
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139 | if (grp->fh2 && SvOK (grp->fh2)) |
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140 | { |
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141 | dSP; |
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|
142 | |
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143 | ENTER; |
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144 | SAVETMPS; |
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|
145 | PUSHMARK (SP); |
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146 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
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147 | PUTBACK; |
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|
148 | call_sv (grp->fh2, G_VOID | G_EVAL); |
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149 | SPAGAIN; |
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|
150 | FREETMPS; |
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|
151 | LEAVE; |
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152 | } |
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153 | |
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154 | /* stop if no progress has been made */ |
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|
155 | if (old_len == grp->length) |
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|
156 | { |
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|
157 | SvREFCNT_dec (grp->fh2); |
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|
158 | grp->fh2 = 0; |
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159 | break; |
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160 | } |
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|
161 | } |
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|
162 | } |
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163 | |
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|
164 | static void aio_grp_dec (aio_req grp) |
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|
165 | { |
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|
166 | --grp->length; |
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|
167 | |
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|
168 | /* call feeder, if applicable */ |
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169 | aio_grp_feed (grp); |
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|
170 | |
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|
171 | /* finish, if done */ |
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|
172 | if (!grp->length && grp->fd) |
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|
173 | { |
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174 | req_invoke (grp); |
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|
175 | req_free (grp); |
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|
176 | } |
125 | } |
177 | } |
126 | |
178 | |
127 | static void poll_wait () |
179 | static void poll_wait () |
128 | { |
180 | { |
129 | if (nreqs && !ress) |
181 | if (nreqs && !ress) |
… | |
… | |
145 | return; |
197 | return; |
146 | |
198 | |
147 | errno = req->errorno; |
199 | errno = req->errorno; |
148 | |
200 | |
149 | ENTER; |
201 | ENTER; |
|
|
202 | SAVETMPS; |
150 | PUSHMARK (SP); |
203 | PUSHMARK (SP); |
151 | EXTEND (SP, 1); |
204 | EXTEND (SP, 1); |
152 | |
205 | |
153 | switch (req->type) |
206 | switch (req->type) |
154 | { |
207 | { |
… | |
… | |
193 | XPUSHs (sv_2mortal (fh)); |
246 | XPUSHs (sv_2mortal (fh)); |
194 | } |
247 | } |
195 | break; |
248 | break; |
196 | |
249 | |
197 | case REQ_GROUP: |
250 | case REQ_GROUP: |
|
|
251 | req->fd = 2; /* mark group as finished */ |
|
|
252 | |
198 | if (req->data) |
253 | if (req->data) |
199 | { |
254 | { |
200 | int i; |
255 | int i; |
201 | AV *av = (AV *)req->data; |
256 | AV *av = (AV *)req->data; |
202 | |
257 | |
… | |
… | |
217 | |
272 | |
218 | PUTBACK; |
273 | PUTBACK; |
219 | call_sv (req->callback, G_VOID | G_EVAL); |
274 | call_sv (req->callback, G_VOID | G_EVAL); |
220 | SPAGAIN; |
275 | SPAGAIN; |
221 | |
276 | |
|
|
277 | FREETMPS; |
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|
278 | LEAVE; |
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|
279 | |
|
|
280 | errno = errorno; |
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|
281 | |
222 | if (SvTRUE (ERRSV)) |
282 | if (SvTRUE (ERRSV)) |
223 | { |
283 | { |
224 | req_free (req); |
284 | req_free (req); |
225 | croak (0); |
285 | croak (0); |
226 | } |
286 | } |
227 | |
|
|
228 | LEAVE; |
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|
229 | |
|
|
230 | errno = errorno; |
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|
231 | } |
287 | } |
232 | |
288 | |
233 | static void req_free (aio_req req) |
289 | static void req_free (aio_req req) |
234 | { |
290 | { |
235 | if (req->grp) |
291 | if (req->grp) |
236 | { |
292 | { |
237 | aio_req grp = req->grp; |
293 | aio_req grp = req->grp; |
238 | |
294 | |
239 | /* unlink request */ |
295 | /* unlink request */ |
240 | req->grp_next->grp_prev = req->grp_prev; |
296 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
241 | req->grp_prev->grp_next = req->grp_next; |
297 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
242 | |
298 | |
243 | if (grp->grp_next == grp && grp->fd) |
299 | if (grp->grp_first == req) |
244 | { |
300 | grp->grp_first = req->grp_next; |
245 | req_invoke (grp); |
301 | |
246 | req_free (grp); |
302 | aio_grp_dec (grp); |
247 | } |
|
|
248 | } |
303 | } |
249 | |
304 | |
250 | if (req->self) |
305 | if (req->self) |
251 | { |
306 | { |
252 | sv_unmagic (req->self, PERL_MAGIC_ext); |
307 | sv_unmagic (req->self, PERL_MAGIC_ext); |
253 | SvREFCNT_dec (req->self); |
308 | SvREFCNT_dec (req->self); |
254 | } |
309 | } |
255 | |
310 | |
256 | if (req->data) |
|
|
257 | SvREFCNT_dec (req->data); |
311 | SvREFCNT_dec (req->data); |
258 | |
|
|
259 | if (req->fh) |
|
|
260 | SvREFCNT_dec (req->fh); |
312 | SvREFCNT_dec (req->fh); |
261 | |
|
|
262 | if (req->fh2) |
|
|
263 | SvREFCNT_dec (req->fh2); |
313 | SvREFCNT_dec (req->fh2); |
264 | |
|
|
265 | if (req->statdata) |
|
|
266 | Safefree (req->statdata); |
|
|
267 | |
|
|
268 | if (req->callback) |
|
|
269 | SvREFCNT_dec (req->callback); |
314 | SvREFCNT_dec (req->callback); |
|
|
315 | Safefree (req->statdata); |
270 | |
316 | |
271 | if (req->type == REQ_READDIR && req->result >= 0) |
317 | if (req->type == REQ_READDIR && req->result >= 0) |
272 | free (req->data2ptr); |
318 | free (req->data2ptr); |
273 | |
319 | |
274 | Safefree (req); |
320 | Safefree (req); |
… | |
… | |
280 | |
326 | |
281 | if (req->type == REQ_GROUP) |
327 | if (req->type == REQ_GROUP) |
282 | { |
328 | { |
283 | aio_req sub; |
329 | aio_req sub; |
284 | |
330 | |
285 | for (sub = req->grp_next; sub != req; sub = sub->grp_next) |
331 | for (sub = req->grp_first; sub; sub = sub->grp_next) |
286 | req_cancel (sub); |
332 | req_cancel (sub); |
287 | } |
333 | } |
288 | } |
334 | } |
289 | |
335 | |
290 | static int poll_cb () |
336 | static int poll_cb () |
… | |
… | |
317 | pthread_mutex_unlock (&reslock); |
363 | pthread_mutex_unlock (&reslock); |
318 | |
364 | |
319 | if (!req) |
365 | if (!req) |
320 | break; |
366 | break; |
321 | |
367 | |
322 | nreqs--; |
368 | --nreqs; |
323 | |
369 | |
324 | if (req->type == REQ_QUIT) |
370 | if (req->type == REQ_QUIT) |
325 | started--; |
371 | started--; |
326 | else if (req->type == REQ_GROUP && req->grp_next != req) |
372 | else if (req->type == REQ_GROUP && req->length) |
327 | { |
373 | { |
328 | req->fd = 1; /* mark request as delayed */ |
374 | req->fd = 1; /* mark request as delayed */ |
329 | continue; |
375 | continue; |
330 | } |
376 | } |
331 | else |
377 | else |
… | |
… | |
378 | static void req_send (aio_req req) |
424 | static void req_send (aio_req req) |
379 | { |
425 | { |
380 | while (started < wanted && nreqs >= started) |
426 | while (started < wanted && nreqs >= started) |
381 | start_thread (); |
427 | start_thread (); |
382 | |
428 | |
383 | nreqs++; |
429 | ++nreqs; |
384 | |
430 | |
385 | pthread_mutex_lock (&reqlock); |
431 | pthread_mutex_lock (&reqlock); |
386 | |
432 | |
387 | req->next = 0; |
433 | req->next = 0; |
388 | |
434 | |
… | |
… | |
740 | pthread_mutex_unlock (&reqlock); |
786 | pthread_mutex_unlock (&reqlock); |
741 | |
787 | |
742 | errno = 0; /* strictly unnecessary */ |
788 | errno = 0; /* strictly unnecessary */ |
743 | |
789 | |
744 | if (!req->cancelled) |
790 | if (!req->cancelled) |
745 | switch (req->type) |
791 | switch (type = req->type) /* remember type for QUIT check */ |
746 | { |
792 | { |
747 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
793 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
748 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
794 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
749 | |
795 | |
750 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
796 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
… | |
… | |
1161 | PROTOTYPE: ;$ |
1207 | PROTOTYPE: ;$ |
1162 | PPCODE: |
1208 | PPCODE: |
1163 | { |
1209 | { |
1164 | dREQ; |
1210 | dREQ; |
1165 | req->type = REQ_GROUP; |
1211 | req->type = REQ_GROUP; |
1166 | req->grp_next = req; |
|
|
1167 | req->grp_prev = req; |
|
|
1168 | |
|
|
1169 | req_send (req); |
1212 | req_send (req); |
1170 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1213 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1171 | } |
1214 | } |
1172 | |
1215 | |
1173 | void |
1216 | void |
… | |
… | |
1236 | void |
1279 | void |
1237 | add (aio_req grp, ...) |
1280 | add (aio_req grp, ...) |
1238 | PPCODE: |
1281 | PPCODE: |
1239 | { |
1282 | { |
1240 | int i; |
1283 | int i; |
|
|
1284 | aio_req req; |
|
|
1285 | |
|
|
1286 | if (grp->fd == 2) |
|
|
1287 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
1241 | |
1288 | |
1242 | for (i = 1; i < items; ++i ) |
1289 | for (i = 1; i < items; ++i ) |
1243 | { |
1290 | { |
1244 | if (GIMME_V != G_VOID) |
1291 | if (GIMME_V != G_VOID) |
1245 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
1292 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
1246 | |
1293 | |
1247 | aio_req req = SvAIO_REQ (ST (i)); |
1294 | req = SvAIO_REQ (ST (i)); |
1248 | |
1295 | |
1249 | if (req) |
1296 | if (req) |
1250 | { |
1297 | { |
1251 | req->grp_prev = grp; |
1298 | ++grp->length; |
1252 | req->grp_next = grp->grp_next; |
|
|
1253 | grp->grp_next->grp_prev = req; |
|
|
1254 | grp->grp_next = req; |
|
|
1255 | |
|
|
1256 | req->grp = grp; |
1299 | req->grp = grp; |
|
|
1300 | |
|
|
1301 | req->grp_prev = 0; |
|
|
1302 | req->grp_next = grp->grp_first; |
|
|
1303 | |
|
|
1304 | if (grp->grp_first) |
|
|
1305 | grp->grp_first->grp_prev = req; |
|
|
1306 | |
|
|
1307 | grp->grp_first = req; |
1257 | } |
1308 | } |
1258 | } |
1309 | } |
1259 | } |
1310 | } |
1260 | |
1311 | |
1261 | void |
1312 | void |
1262 | result (aio_req grp, ...) |
1313 | result (aio_req grp, ...) |
|
|
1314 | CODE: |
|
|
1315 | { |
|
|
1316 | int i; |
|
|
1317 | AV *av = newAV (); |
|
|
1318 | |
|
|
1319 | for (i = 1; i < items; ++i ) |
|
|
1320 | av_push (av, newSVsv (ST (i))); |
|
|
1321 | |
|
|
1322 | SvREFCNT_dec (grp->data); |
|
|
1323 | grp->data = (SV *)av; |
|
|
1324 | } |
|
|
1325 | |
|
|
1326 | void |
|
|
1327 | lock (aio_req grp) |
1263 | CODE: |
1328 | CODE: |
1264 | { |
1329 | ++grp->length; |
1265 | int i; |
|
|
1266 | AV *av = newAV (); |
|
|
1267 | |
1330 | |
1268 | if (grp->data) |
1331 | void |
|
|
1332 | unlock (aio_req grp) |
|
|
1333 | CODE: |
|
|
1334 | aio_grp_dec (grp); |
|
|
1335 | |
|
|
1336 | void |
|
|
1337 | feeder_limit (aio_req grp, int limit) |
|
|
1338 | CODE: |
|
|
1339 | grp->fd2 = limit; |
|
|
1340 | aio_grp_feed (grp); |
|
|
1341 | |
|
|
1342 | void |
|
|
1343 | set_feeder (aio_req grp, SV *callback=&PL_sv_undef) |
|
|
1344 | CODE: |
|
|
1345 | { |
1269 | SvREFCNT_dec (grp->data); |
1346 | SvREFCNT_dec (grp->fh2); |
|
|
1347 | grp->fh2 = newSVsv (callback); |
1270 | |
1348 | |
1271 | for (i = 1; i < items; ++i ) |
1349 | if (grp->fd2 <= 0) |
1272 | av_push (av, newSVsv (ST (i))); |
1350 | grp->fd2 = 2; |
1273 | |
1351 | |
1274 | grp->data = (SV *)av; |
1352 | aio_grp_feed (grp); |
1275 | } |
1353 | } |
1276 | |
1354 | |