… | |
… | |
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; |
|
|
70 | |
|
|
71 | struct aio_cb *volatile next; |
69 | struct aio_cb *volatile next; |
|
|
70 | |
|
|
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; |
… | |
… | |
88 | unsigned char cancelled; |
88 | unsigned char cancelled; |
89 | } aio_cb; |
89 | } aio_cb; |
90 | |
90 | |
91 | typedef aio_cb *aio_req; |
91 | typedef aio_cb *aio_req; |
92 | typedef aio_cb *aio_req_ornot; |
92 | typedef aio_cb *aio_req_ornot; |
93 | typedef aio_cb *aio_group; |
|
|
94 | |
93 | |
95 | static int started, wanted; |
94 | static int started, wanted; |
96 | static volatile int nreqs; |
95 | static volatile int nreqs; |
97 | static int max_outstanding = 1<<30; |
96 | static int max_outstanding = 1<<30; |
98 | static int respipe [2]; |
97 | static int respipe [2]; |
… | |
… | |
102 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
101 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
103 | |
102 | |
104 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
103 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
105 | static volatile aio_req ress, rese; /* queue start, queue end */ |
104 | static volatile aio_req ress, rese; /* queue start, queue end */ |
106 | |
105 | |
|
|
106 | static void req_invoke (aio_req req); |
107 | static void req_free (aio_req req); |
107 | static void req_free (aio_req req); |
108 | |
108 | |
109 | /* must be called at most once */ |
109 | /* must be called at most once */ |
110 | static SV *req_sv (aio_req req, const char *klass) |
110 | static SV *req_sv (aio_req req, const char *klass) |
111 | { |
111 | { |
|
|
112 | if (!req->self) |
|
|
113 | { |
112 | req->self = (SV *)newHV (); |
114 | req->self = (SV *)newHV (); |
113 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
115 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
|
|
116 | } |
114 | |
117 | |
115 | 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))); |
116 | } |
119 | } |
117 | |
120 | |
118 | static aio_req SvAIO_REQ (SV *sv) |
121 | static aio_req SvAIO_REQ (SV *sv) |
… | |
… | |
121 | croak ("object of class " AIO_REQ_KLASS " expected"); |
124 | croak ("object of class " AIO_REQ_KLASS " expected"); |
122 | |
125 | |
123 | MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
126 | MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
124 | |
127 | |
125 | return mg ? (aio_req)mg->mg_ptr : 0; |
128 | return mg ? (aio_req)mg->mg_ptr : 0; |
|
|
129 | } |
|
|
130 | |
|
|
131 | static void aio_grp_feed (aio_req grp) |
|
|
132 | { |
|
|
133 | while (grp->length < grp->fd2) |
|
|
134 | { |
|
|
135 | int old_len = grp->length; |
|
|
136 | |
|
|
137 | if (grp->fh2 && SvOK (grp->fh2)) |
|
|
138 | { |
|
|
139 | dSP; |
|
|
140 | |
|
|
141 | ENTER; |
|
|
142 | SAVETMPS; |
|
|
143 | PUSHMARK (SP); |
|
|
144 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
|
|
145 | PUTBACK; |
|
|
146 | call_sv (grp->fh2, G_VOID | G_EVAL); |
|
|
147 | SPAGAIN; |
|
|
148 | FREETMPS; |
|
|
149 | LEAVE; |
|
|
150 | } |
|
|
151 | |
|
|
152 | /* stop if no progress has been made */ |
|
|
153 | if (old_len == grp->length) |
|
|
154 | { |
|
|
155 | SvREFCNT_dec (grp->fh2); |
|
|
156 | grp->fh2 = 0; |
|
|
157 | break; |
|
|
158 | } |
|
|
159 | } |
|
|
160 | } |
|
|
161 | |
|
|
162 | static void aio_grp_dec (aio_req grp) |
|
|
163 | { |
|
|
164 | --grp->length; |
|
|
165 | |
|
|
166 | /* call feeder, if applicable */ |
|
|
167 | aio_grp_feed (grp); |
|
|
168 | |
|
|
169 | /* finish, if done */ |
|
|
170 | if (!grp->length && grp->fd) |
|
|
171 | { |
|
|
172 | req_invoke (grp); |
|
|
173 | req_free (grp); |
|
|
174 | } |
126 | } |
175 | } |
127 | |
176 | |
128 | static void poll_wait () |
177 | static void poll_wait () |
129 | { |
178 | { |
130 | if (nreqs && !ress) |
179 | if (nreqs && !ress) |
… | |
… | |
146 | return; |
195 | return; |
147 | |
196 | |
148 | errno = req->errorno; |
197 | errno = req->errorno; |
149 | |
198 | |
150 | ENTER; |
199 | ENTER; |
|
|
200 | SAVETMPS; |
151 | PUSHMARK (SP); |
201 | PUSHMARK (SP); |
|
|
202 | EXTEND (SP, 1); |
152 | |
203 | |
153 | switch (req->type) |
204 | switch (req->type) |
154 | { |
205 | { |
155 | case REQ_READDIR: |
206 | case REQ_READDIR: |
156 | { |
207 | { |
… | |
… | |
171 | } |
222 | } |
172 | |
223 | |
173 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
224 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
174 | } |
225 | } |
175 | |
226 | |
176 | XPUSHs (rv); |
227 | PUSHs (rv); |
177 | } |
228 | } |
178 | break; |
229 | break; |
179 | |
230 | |
180 | case REQ_OPEN: |
231 | case REQ_OPEN: |
181 | { |
232 | { |
182 | /* convert fd to fh */ |
233 | /* convert fd to fh */ |
183 | SV *fh; |
234 | SV *fh; |
184 | |
235 | |
185 | XPUSHs (sv_2mortal (newSViv (req->result))); |
236 | PUSHs (sv_2mortal (newSViv (req->result))); |
186 | PUTBACK; |
237 | PUTBACK; |
187 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
238 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
188 | SPAGAIN; |
239 | SPAGAIN; |
189 | |
240 | |
190 | fh = SvREFCNT_inc (POPs); |
241 | fh = SvREFCNT_inc (POPs); |
… | |
… | |
192 | PUSHMARK (SP); |
243 | PUSHMARK (SP); |
193 | XPUSHs (sv_2mortal (fh)); |
244 | XPUSHs (sv_2mortal (fh)); |
194 | } |
245 | } |
195 | break; |
246 | break; |
196 | |
247 | |
|
|
248 | case REQ_GROUP: |
|
|
249 | req->fd = 2; /* mark group as finished */ |
|
|
250 | |
|
|
251 | if (req->data) |
|
|
252 | { |
|
|
253 | int i; |
|
|
254 | AV *av = (AV *)req->data; |
|
|
255 | |
|
|
256 | EXTEND (SP, AvFILL (av) + 1); |
|
|
257 | for (i = 0; i <= AvFILL (av); ++i) |
|
|
258 | PUSHs (*av_fetch (av, i, 0)); |
|
|
259 | } |
|
|
260 | break; |
|
|
261 | |
197 | case REQ_SLEEP: |
262 | case REQ_SLEEP: |
198 | case REQ_GROUP: |
|
|
199 | break; |
263 | break; |
200 | |
264 | |
201 | default: |
265 | default: |
202 | XPUSHs (sv_2mortal (newSViv (req->result))); |
266 | PUSHs (sv_2mortal (newSViv (req->result))); |
203 | break; |
267 | break; |
204 | } |
268 | } |
205 | |
269 | |
206 | |
270 | |
207 | PUTBACK; |
271 | PUTBACK; |
208 | call_sv (req->callback, G_VOID | G_EVAL); |
272 | call_sv (req->callback, G_VOID | G_EVAL); |
209 | SPAGAIN; |
273 | SPAGAIN; |
210 | |
274 | |
|
|
275 | FREETMPS; |
|
|
276 | LEAVE; |
|
|
277 | |
|
|
278 | errno = errorno; |
|
|
279 | |
211 | if (SvTRUE (ERRSV)) |
280 | if (SvTRUE (ERRSV)) |
212 | { |
281 | { |
213 | req_free (req); |
282 | req_free (req); |
214 | croak (0); |
283 | croak (0); |
215 | } |
284 | } |
216 | |
|
|
217 | LEAVE; |
|
|
218 | |
|
|
219 | errno = errorno; |
|
|
220 | } |
285 | } |
221 | |
286 | |
222 | static void req_free (aio_req req) |
287 | static void req_free (aio_req req) |
223 | { |
288 | { |
224 | if (req->grp) |
289 | if (req->grp) |
225 | { |
290 | { |
226 | aio_req grp = req->grp; |
291 | aio_req grp = req->grp; |
227 | |
292 | |
228 | /* unlink request */ |
293 | /* unlink request */ |
229 | req->grp_next->grp_prev = req->grp_prev; |
294 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
230 | req->grp_prev->grp_next = req->grp_next; |
295 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
231 | |
296 | |
232 | if (grp->grp_next == grp) |
297 | if (grp->grp_first == req) |
233 | { |
298 | grp->grp_first = req->grp_next; |
234 | req_invoke (grp); |
299 | |
235 | req_free (grp); |
300 | aio_grp_dec (grp); |
236 | } |
|
|
237 | } |
301 | } |
238 | |
302 | |
239 | if (req->self) |
303 | if (req->self) |
240 | { |
304 | { |
241 | sv_unmagic (req->self, PERL_MAGIC_ext); |
305 | sv_unmagic (req->self, PERL_MAGIC_ext); |
242 | SvREFCNT_dec (req->self); |
306 | SvREFCNT_dec (req->self); |
243 | } |
307 | } |
244 | |
308 | |
245 | if (req->data) |
|
|
246 | SvREFCNT_dec (req->data); |
309 | SvREFCNT_dec (req->data); |
247 | |
|
|
248 | if (req->fh) |
|
|
249 | SvREFCNT_dec (req->fh); |
310 | SvREFCNT_dec (req->fh); |
250 | |
|
|
251 | if (req->fh2) |
|
|
252 | SvREFCNT_dec (req->fh2); |
311 | SvREFCNT_dec (req->fh2); |
253 | |
|
|
254 | if (req->statdata) |
|
|
255 | Safefree (req->statdata); |
|
|
256 | |
|
|
257 | if (req->callback) |
|
|
258 | SvREFCNT_dec (req->callback); |
312 | SvREFCNT_dec (req->callback); |
|
|
313 | Safefree (req->statdata); |
259 | |
314 | |
260 | if (req->type == REQ_READDIR && req->result >= 0) |
315 | if (req->type == REQ_READDIR && req->result >= 0) |
261 | free (req->data2ptr); |
316 | free (req->data2ptr); |
262 | |
317 | |
263 | Safefree (req); |
318 | Safefree (req); |
… | |
… | |
269 | |
324 | |
270 | if (req->type == REQ_GROUP) |
325 | if (req->type == REQ_GROUP) |
271 | { |
326 | { |
272 | aio_req sub; |
327 | aio_req sub; |
273 | |
328 | |
274 | for (sub = req->grp_next; sub != req; sub = sub->grp_next) |
329 | for (sub = req->grp_first; sub; sub = sub->grp_next) |
275 | req_cancel (sub); |
330 | req_cancel (sub); |
276 | } |
331 | } |
277 | } |
332 | } |
278 | |
333 | |
279 | static int poll_cb () |
334 | static int poll_cb () |
… | |
… | |
306 | pthread_mutex_unlock (&reslock); |
361 | pthread_mutex_unlock (&reslock); |
307 | |
362 | |
308 | if (!req) |
363 | if (!req) |
309 | break; |
364 | break; |
310 | |
365 | |
311 | nreqs--; |
366 | --nreqs; |
312 | |
367 | |
313 | if (req->type == REQ_QUIT) |
368 | if (req->type == REQ_QUIT) |
314 | started--; |
369 | started--; |
315 | else if (req->type == REQ_GROUP && req->grp_next != req) |
370 | else if (req->type == REQ_GROUP && req->length) |
|
|
371 | { |
|
|
372 | req->fd = 1; /* mark request as delayed */ |
316 | continue; |
373 | continue; |
|
|
374 | } |
317 | else |
375 | else |
318 | { |
376 | { |
319 | if (req->type == REQ_READ) |
377 | if (req->type == REQ_READ) |
320 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
378 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
321 | |
379 | |
… | |
… | |
364 | static void req_send (aio_req req) |
422 | static void req_send (aio_req req) |
365 | { |
423 | { |
366 | while (started < wanted && nreqs >= started) |
424 | while (started < wanted && nreqs >= started) |
367 | start_thread (); |
425 | start_thread (); |
368 | |
426 | |
369 | nreqs++; |
427 | ++nreqs; |
370 | |
428 | |
371 | pthread_mutex_lock (&reqlock); |
429 | pthread_mutex_lock (&reqlock); |
372 | |
430 | |
373 | req->next = 0; |
431 | req->next = 0; |
374 | |
432 | |
… | |
… | |
726 | pthread_mutex_unlock (&reqlock); |
784 | pthread_mutex_unlock (&reqlock); |
727 | |
785 | |
728 | errno = 0; /* strictly unnecessary */ |
786 | errno = 0; /* strictly unnecessary */ |
729 | |
787 | |
730 | if (!req->cancelled) |
788 | if (!req->cancelled) |
731 | switch (req->type) |
789 | switch (type = req->type) /* remember type for QUIT check */ |
732 | { |
790 | { |
733 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
791 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
734 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
792 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
735 | |
793 | |
736 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
794 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
… | |
… | |
1142 | } |
1200 | } |
1143 | |
1201 | |
1144 | void |
1202 | void |
1145 | aio_group (callback=&PL_sv_undef) |
1203 | aio_group (callback=&PL_sv_undef) |
1146 | SV * callback |
1204 | SV * callback |
1147 | PROTOTYPE: ;& |
1205 | PROTOTYPE: ;$ |
1148 | PPCODE: |
1206 | PPCODE: |
1149 | { |
1207 | { |
1150 | dREQ; |
1208 | dREQ; |
1151 | req->type = REQ_GROUP; |
1209 | req->type = REQ_GROUP; |
1152 | req->grp_next = req; |
|
|
1153 | req->grp_prev = req; |
|
|
1154 | |
|
|
1155 | req_send (req); |
1210 | req_send (req); |
1156 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1211 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1157 | } |
1212 | } |
1158 | |
1213 | |
1159 | void |
1214 | void |
… | |
… | |
1205 | CODE: |
1260 | CODE: |
1206 | RETVAL = nreqs; |
1261 | RETVAL = nreqs; |
1207 | OUTPUT: |
1262 | OUTPUT: |
1208 | RETVAL |
1263 | RETVAL |
1209 | |
1264 | |
|
|
1265 | PROTOTYPES: DISABLE |
|
|
1266 | |
1210 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1267 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1211 | |
1268 | |
1212 | void |
1269 | void |
1213 | cancel (aio_req_ornot req) |
1270 | cancel (aio_req_ornot req) |
1214 | PROTOTYPE: |
1271 | PROTOTYPE: |
… | |
… | |
1217 | |
1274 | |
1218 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
1275 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
1219 | |
1276 | |
1220 | void |
1277 | void |
1221 | add (aio_req grp, ...) |
1278 | add (aio_req grp, ...) |
1222 | PROTOTYPE: $;@ |
|
|
1223 | PPCODE: |
1279 | PPCODE: |
1224 | { |
1280 | { |
1225 | int i; |
1281 | int i; |
|
|
1282 | |
|
|
1283 | if (grp->fd == 2) |
|
|
1284 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
1226 | |
1285 | |
1227 | for (i = 1; i < items; ++i ) |
1286 | for (i = 1; i < items; ++i ) |
1228 | { |
1287 | { |
1229 | aio_req req = SvAIO_REQ (ST (i)); |
|
|
1230 | |
|
|
1231 | req->grp_prev = grp; |
|
|
1232 | req->grp_next = grp->grp_next; |
|
|
1233 | grp->grp_next->grp_prev = req; |
|
|
1234 | grp->grp_next = req; |
|
|
1235 | |
|
|
1236 | req->grp = grp; |
|
|
1237 | |
|
|
1238 | if (GIMME_V != G_VOID) |
1288 | if (GIMME_V != G_VOID) |
1239 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
1289 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
|
|
1290 | |
|
|
1291 | aio_req req = SvAIO_REQ (ST (i)); |
|
|
1292 | |
|
|
1293 | if (req) |
|
|
1294 | { |
|
|
1295 | ++grp->length; |
|
|
1296 | req->grp = grp; |
|
|
1297 | |
|
|
1298 | req->grp_prev = 0; |
|
|
1299 | req->grp_next = grp->grp_first; |
|
|
1300 | |
|
|
1301 | if (grp->grp_first) |
|
|
1302 | grp->grp_first->grp_prev = req; |
|
|
1303 | |
|
|
1304 | grp->grp_first = req; |
|
|
1305 | } |
1240 | } |
1306 | } |
1241 | } |
1307 | } |
1242 | |
1308 | |
|
|
1309 | void |
|
|
1310 | result (aio_req grp, ...) |
|
|
1311 | CODE: |
|
|
1312 | { |
|
|
1313 | int i; |
|
|
1314 | AV *av = newAV (); |
|
|
1315 | |
|
|
1316 | for (i = 1; i < items; ++i ) |
|
|
1317 | av_push (av, newSVsv (ST (i))); |
|
|
1318 | |
|
|
1319 | SvREFCNT_dec (grp->data); |
|
|
1320 | grp->data = (SV *)av; |
|
|
1321 | } |
|
|
1322 | |
|
|
1323 | void |
|
|
1324 | lock (aio_req grp) |
|
|
1325 | CODE: |
|
|
1326 | ++grp->length; |
|
|
1327 | |
|
|
1328 | void |
|
|
1329 | unlock (aio_req grp) |
|
|
1330 | CODE: |
|
|
1331 | aio_grp_dec (grp); |
|
|
1332 | |
|
|
1333 | void |
|
|
1334 | feeder_limit (aio_req grp, int limit) |
|
|
1335 | CODE: |
|
|
1336 | grp->fd2 = limit; |
|
|
1337 | aio_grp_feed (grp); |
|
|
1338 | |
|
|
1339 | void |
|
|
1340 | set_feeder (aio_req grp, SV *callback=&PL_sv_undef) |
|
|
1341 | CODE: |
|
|
1342 | { |
|
|
1343 | SvREFCNT_dec (grp->fh2); |
|
|
1344 | grp->fh2 = newSVsv (callback); |
|
|
1345 | |
|
|
1346 | if (grp->fd2 <= 0) |
|
|
1347 | grp->fd2 = 2; |
|
|
1348 | |
|
|
1349 | aio_grp_feed (grp); |
|
|
1350 | } |
|
|
1351 | |