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1 | /* solaris */ |
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2 | #define _POSIX_PTHREAD_SEMANTICS 1 |
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3 | |
1 | #if __linux |
4 | #if __linux |
2 | # define _GNU_SOURCE |
5 | # define _GNU_SOURCE |
3 | #endif |
6 | #endif |
4 | |
7 | |
5 | #define _REENTRANT 1 |
8 | #define _REENTRANT 1 |
… | |
… | |
56 | |
59 | |
57 | /* buffer size for various temporary buffers */ |
60 | /* buffer size for various temporary buffers */ |
58 | #define AIO_BUFSIZE 65536 |
61 | #define AIO_BUFSIZE 65536 |
59 | |
62 | |
60 | #define dBUF \ |
63 | #define dBUF \ |
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64 | char *aio_buf; \ |
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65 | LOCK (wrklock); \ |
61 | char *aio_buf = malloc (AIO_BUFSIZE); \ |
66 | self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ |
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67 | UNLOCK (wrklock); \ |
62 | if (!aio_buf) \ |
68 | if (!aio_buf) \ |
63 | return -1; |
69 | return -1; |
64 | |
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65 | #define fBUF free (aio_buf) |
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66 | |
70 | |
67 | enum { |
71 | enum { |
68 | REQ_QUIT, |
72 | REQ_QUIT, |
69 | REQ_OPEN, REQ_CLOSE, |
73 | REQ_OPEN, REQ_CLOSE, |
70 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
74 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
… | |
… | |
73 | REQ_FSYNC, REQ_FDATASYNC, |
77 | REQ_FSYNC, REQ_FDATASYNC, |
74 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
78 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
75 | REQ_READDIR, |
79 | REQ_READDIR, |
76 | REQ_LINK, REQ_SYMLINK, |
80 | REQ_LINK, REQ_SYMLINK, |
77 | REQ_GROUP, REQ_NOP, |
81 | REQ_GROUP, REQ_NOP, |
78 | REQ_SLEEP, |
82 | REQ_BUSY, |
79 | }; |
83 | }; |
80 | |
84 | |
81 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
85 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
82 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
86 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
83 | |
87 | |
… | |
… | |
117 | PRI_MIN = -4, |
121 | PRI_MIN = -4, |
118 | PRI_MAX = 4, |
122 | PRI_MAX = 4, |
119 | |
123 | |
120 | DEFAULT_PRI = 0, |
124 | DEFAULT_PRI = 0, |
121 | PRI_BIAS = -PRI_MIN, |
125 | PRI_BIAS = -PRI_MIN, |
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126 | NUM_PRI = PRI_MAX + PRI_BIAS + 1, |
122 | }; |
127 | }; |
123 | |
128 | |
124 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
129 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
125 | |
130 | |
126 | static int started, wanted; |
131 | static int started, wanted; |
127 | static volatile int nreqs; |
132 | static volatile int nreqs; |
128 | static int max_outstanding = 1<<30; |
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129 | static int respipe [2]; |
133 | static int respipe [2]; |
130 | |
134 | |
131 | #if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
135 | #if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
132 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
136 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
133 | #else |
137 | #else |
134 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
138 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
135 | #endif |
139 | #endif |
136 | |
140 | |
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141 | #define LOCK(mutex) pthread_mutex_lock (&(mutex)) |
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142 | #define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) |
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143 | |
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144 | /* worker threasd management */ |
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145 | static pthread_mutex_t wrklock = AIO_MUTEX_INIT; |
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146 | |
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147 | typedef struct worker { |
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148 | /* locked by wrklock */ |
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149 | struct worker *prev, *next; |
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150 | |
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151 | pthread_t tid; |
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152 | |
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153 | /* locked by reslock, reqlock or wrklock */ |
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154 | aio_req req; /* currently processed request */ |
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155 | void *dbuf; |
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156 | DIR *dirp; |
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157 | } worker; |
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158 | |
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159 | static worker wrk_first = { &wrk_first, &wrk_first, 0 }; |
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160 | |
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161 | static void worker_clear (worker *wrk) |
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162 | { |
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163 | if (wrk->dirp) |
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164 | { |
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165 | closedir (wrk->dirp); |
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166 | wrk->dirp = 0; |
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167 | } |
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168 | |
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169 | if (wrk->dbuf) |
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170 | { |
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171 | free (wrk->dbuf); |
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172 | wrk->dbuf = 0; |
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173 | } |
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174 | } |
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175 | |
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176 | static void worker_free (worker *wrk) |
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177 | { |
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178 | wrk->next->prev = wrk->prev; |
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179 | wrk->prev->next = wrk->next; |
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180 | |
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181 | free (wrk); |
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182 | } |
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183 | |
137 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
184 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
138 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
185 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
139 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
186 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
140 | |
187 | |
141 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
188 | /* |
142 | static volatile aio_req ress, rese; /* queue start, queue end */ |
189 | * a somewhat faster data structure might be nice, but |
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190 | * with 8 priorities this actually needs <20 insns |
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191 | * per shift, the most expensive operation. |
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192 | */ |
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193 | typedef struct { |
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194 | aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */ |
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195 | int size; |
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196 | } reqq; |
143 | |
197 | |
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198 | static reqq req_queue; |
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199 | static reqq res_queue; |
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200 | |
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201 | int reqq_push (reqq *q, aio_req req) |
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202 | { |
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203 | int pri = req->pri; |
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204 | req->next = 0; |
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205 | |
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206 | if (q->qe[pri]) |
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207 | { |
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208 | q->qe[pri]->next = req; |
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209 | q->qe[pri] = req; |
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210 | } |
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211 | else |
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212 | q->qe[pri] = q->qs[pri] = req; |
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213 | |
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214 | return q->size++; |
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215 | } |
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216 | |
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217 | aio_req reqq_shift (reqq *q) |
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218 | { |
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219 | int pri; |
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220 | |
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221 | if (!q->size) |
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222 | return 0; |
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223 | |
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224 | --q->size; |
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225 | |
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226 | for (pri = NUM_PRI; pri--; ) |
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227 | { |
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228 | aio_req req = q->qs[pri]; |
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229 | |
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230 | if (req) |
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231 | { |
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232 | if (!(q->qs[pri] = req->next)) |
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233 | q->qe[pri] = 0; |
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234 | |
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235 | return req; |
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236 | } |
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237 | } |
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238 | |
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239 | abort (); |
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240 | } |
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241 | |
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242 | static int poll_cb (); |
144 | static void req_invoke (aio_req req); |
243 | static void req_invoke (aio_req req); |
145 | static void req_free (aio_req req); |
244 | static void req_free (aio_req req); |
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245 | static void req_cancel (aio_req req); |
146 | |
246 | |
147 | /* must be called at most once */ |
247 | /* must be called at most once */ |
148 | static SV *req_sv (aio_req req, const char *klass) |
248 | static SV *req_sv (aio_req req, const char *klass) |
149 | { |
249 | { |
150 | if (!req->self) |
250 | if (!req->self) |
… | |
… | |
181 | ENTER; |
281 | ENTER; |
182 | SAVETMPS; |
282 | SAVETMPS; |
183 | PUSHMARK (SP); |
283 | PUSHMARK (SP); |
184 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
284 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
185 | PUTBACK; |
285 | PUTBACK; |
186 | call_sv (grp->fh2, G_VOID | G_EVAL); |
286 | call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); |
187 | SPAGAIN; |
287 | SPAGAIN; |
188 | FREETMPS; |
288 | FREETMPS; |
189 | LEAVE; |
289 | LEAVE; |
190 | } |
290 | } |
191 | |
291 | |
… | |
… | |
218 | { |
318 | { |
219 | fd_set rfd; |
319 | fd_set rfd; |
220 | |
320 | |
221 | while (nreqs) |
321 | while (nreqs) |
222 | { |
322 | { |
223 | aio_req req; |
323 | int size; |
224 | #if !(__i386 || __x86_64) /* safe without sempahore on this archs */ |
324 | #if !(__i386 || __x86_64) /* safe without sempahore on these archs */ |
225 | pthread_mutex_lock (&reslock); |
325 | LOCK (reslock); |
226 | #endif |
326 | #endif |
227 | req = ress; |
327 | size = res_queue.size; |
228 | #if !(__i386 || __x86_64) /* safe without sempahore on this archs */ |
328 | #if !(__i386 || __x86_64) /* safe without sempahore on these archs */ |
229 | pthread_mutex_unlock (&reslock); |
329 | UNLOCK (reslock); |
230 | #endif |
330 | #endif |
231 | |
331 | |
232 | if (req) |
332 | if (size) |
233 | return; |
333 | return; |
234 | |
334 | |
235 | FD_ZERO(&rfd); |
335 | FD_ZERO(&rfd); |
236 | FD_SET(respipe [0], &rfd); |
336 | FD_SET(respipe [0], &rfd); |
237 | |
337 | |
… | |
… | |
240 | } |
340 | } |
241 | |
341 | |
242 | static void req_invoke (aio_req req) |
342 | static void req_invoke (aio_req req) |
243 | { |
343 | { |
244 | dSP; |
344 | dSP; |
245 | int errorno = errno; |
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246 | |
345 | |
247 | if (req->flags & FLAG_CANCELLED || !SvOK (req->callback)) |
346 | if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
248 | return; |
347 | { |
249 | |
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250 | errno = req->errorno; |
348 | errno = req->errorno; |
251 | |
349 | |
252 | ENTER; |
350 | ENTER; |
253 | SAVETMPS; |
351 | SAVETMPS; |
254 | PUSHMARK (SP); |
352 | PUSHMARK (SP); |
255 | EXTEND (SP, 1); |
353 | EXTEND (SP, 1); |
256 | |
354 | |
257 | switch (req->type) |
355 | switch (req->type) |
258 | { |
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259 | case REQ_READDIR: |
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260 | { |
356 | { |
261 | SV *rv = &PL_sv_undef; |
357 | case REQ_READDIR: |
262 | |
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263 | if (req->result >= 0) |
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264 | { |
358 | { |
265 | char *buf = req->data2ptr; |
359 | SV *rv = &PL_sv_undef; |
266 | AV *av = newAV (); |
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267 | |
360 | |
268 | while (req->result) |
361 | if (req->result >= 0) |
269 | { |
362 | { |
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363 | int i; |
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364 | char *buf = req->data2ptr; |
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365 | AV *av = newAV (); |
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366 | |
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367 | av_extend (av, req->result - 1); |
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368 | |
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369 | for (i = 0; i < req->result; ++i) |
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370 | { |
270 | SV *sv = newSVpv (buf, 0); |
371 | SV *sv = newSVpv (buf, 0); |
271 | |
372 | |
272 | av_push (av, sv); |
373 | av_store (av, i, sv); |
273 | buf += SvCUR (sv) + 1; |
374 | buf += SvCUR (sv) + 1; |
274 | req->result--; |
375 | } |
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376 | |
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377 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
275 | } |
378 | } |
276 | |
379 | |
277 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
380 | PUSHs (rv); |
278 | } |
381 | } |
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382 | break; |
279 | |
383 | |
280 | PUSHs (rv); |
384 | case REQ_OPEN: |
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385 | { |
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386 | /* convert fd to fh */ |
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387 | SV *fh; |
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388 | |
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389 | PUSHs (sv_2mortal (newSViv (req->result))); |
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390 | PUTBACK; |
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391 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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392 | SPAGAIN; |
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393 | |
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394 | fh = SvREFCNT_inc (POPs); |
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395 | |
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396 | PUSHMARK (SP); |
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397 | XPUSHs (sv_2mortal (fh)); |
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398 | } |
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399 | break; |
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400 | |
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401 | case REQ_GROUP: |
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402 | req->fd = 2; /* mark group as finished */ |
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403 | |
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404 | if (req->data) |
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405 | { |
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406 | int i; |
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407 | AV *av = (AV *)req->data; |
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408 | |
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409 | EXTEND (SP, AvFILL (av) + 1); |
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410 | for (i = 0; i <= AvFILL (av); ++i) |
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411 | PUSHs (*av_fetch (av, i, 0)); |
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412 | } |
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413 | break; |
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414 | |
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415 | case REQ_NOP: |
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416 | case REQ_BUSY: |
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417 | break; |
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418 | |
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419 | default: |
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420 | PUSHs (sv_2mortal (newSViv (req->result))); |
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421 | break; |
281 | } |
422 | } |
282 | break; |
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283 | |
423 | |
284 | case REQ_OPEN: |
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285 | { |
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286 | /* convert fd to fh */ |
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287 | SV *fh; |
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288 | |
424 | |
289 | PUSHs (sv_2mortal (newSViv (req->result))); |
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290 | PUTBACK; |
425 | PUTBACK; |
291 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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292 | SPAGAIN; |
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293 | |
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294 | fh = SvREFCNT_inc (POPs); |
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295 | |
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296 | PUSHMARK (SP); |
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297 | XPUSHs (sv_2mortal (fh)); |
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298 | } |
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299 | break; |
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300 | |
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301 | case REQ_GROUP: |
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302 | req->fd = 2; /* mark group as finished */ |
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303 | |
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304 | if (req->data) |
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305 | { |
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306 | int i; |
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307 | AV *av = (AV *)req->data; |
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308 | |
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309 | EXTEND (SP, AvFILL (av) + 1); |
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310 | for (i = 0; i <= AvFILL (av); ++i) |
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311 | PUSHs (*av_fetch (av, i, 0)); |
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312 | } |
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313 | break; |
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314 | |
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315 | case REQ_NOP: |
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316 | case REQ_SLEEP: |
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317 | break; |
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318 | |
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319 | default: |
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320 | PUSHs (sv_2mortal (newSViv (req->result))); |
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321 | break; |
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322 | } |
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323 | |
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324 | |
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325 | PUTBACK; |
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326 | call_sv (req->callback, G_VOID | G_EVAL); |
426 | call_sv (req->callback, G_VOID | G_EVAL); |
327 | SPAGAIN; |
427 | SPAGAIN; |
328 | |
428 | |
329 | FREETMPS; |
429 | FREETMPS; |
330 | LEAVE; |
430 | LEAVE; |
331 | |
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332 | errno = errorno; |
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333 | |
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334 | if (SvTRUE (ERRSV)) |
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335 | { |
431 | } |
336 | req_free (req); |
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337 | croak (0); |
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338 | } |
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339 | } |
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340 | |
432 | |
341 | static void req_free (aio_req req) |
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342 | { |
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343 | if (req->grp) |
433 | if (req->grp) |
344 | { |
434 | { |
345 | aio_req grp = req->grp; |
435 | aio_req grp = req->grp; |
346 | |
436 | |
347 | /* unlink request */ |
437 | /* unlink request */ |
… | |
… | |
352 | grp->grp_first = req->grp_next; |
442 | grp->grp_first = req->grp_next; |
353 | |
443 | |
354 | aio_grp_dec (grp); |
444 | aio_grp_dec (grp); |
355 | } |
445 | } |
356 | |
446 | |
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447 | if (SvTRUE (ERRSV)) |
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448 | { |
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449 | req_free (req); |
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450 | croak (0); |
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451 | } |
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452 | } |
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453 | |
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454 | static void req_free (aio_req req) |
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455 | { |
357 | if (req->self) |
456 | if (req->self) |
358 | { |
457 | { |
359 | sv_unmagic (req->self, PERL_MAGIC_ext); |
458 | sv_unmagic (req->self, PERL_MAGIC_ext); |
360 | SvREFCNT_dec (req->self); |
459 | SvREFCNT_dec (req->self); |
361 | } |
460 | } |
… | |
… | |
364 | SvREFCNT_dec (req->fh); |
463 | SvREFCNT_dec (req->fh); |
365 | SvREFCNT_dec (req->fh2); |
464 | SvREFCNT_dec (req->fh2); |
366 | SvREFCNT_dec (req->callback); |
465 | SvREFCNT_dec (req->callback); |
367 | Safefree (req->statdata); |
466 | Safefree (req->statdata); |
368 | |
467 | |
369 | if (req->type == REQ_READDIR && req->result >= 0) |
468 | if (req->type == REQ_READDIR) |
370 | free (req->data2ptr); |
469 | free (req->data2ptr); |
371 | |
470 | |
372 | Safefree (req); |
471 | Safefree (req); |
373 | } |
472 | } |
374 | |
473 | |
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474 | static void req_cancel_subs (aio_req grp) |
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475 | { |
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476 | aio_req sub; |
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477 | |
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478 | if (grp->type != REQ_GROUP) |
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479 | return; |
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480 | |
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481 | SvREFCNT_dec (grp->fh2); |
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482 | grp->fh2 = 0; |
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483 | |
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484 | for (sub = grp->grp_first; sub; sub = sub->grp_next) |
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485 | req_cancel (sub); |
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486 | } |
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487 | |
375 | static void req_cancel (aio_req req) |
488 | static void req_cancel (aio_req req) |
376 | { |
489 | { |
377 | req->flags |= FLAG_CANCELLED; |
490 | req->flags |= FLAG_CANCELLED; |
378 | |
491 | |
379 | if (req->type == REQ_GROUP) |
492 | req_cancel_subs (req); |
380 | { |
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381 | aio_req sub; |
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382 | |
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383 | for (sub = req->grp_first; sub; sub = sub->grp_next) |
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384 | req_cancel (sub); |
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385 | } |
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386 | } |
493 | } |
387 | |
494 | |
388 | static int poll_cb () |
495 | static int poll_cb () |
389 | { |
496 | { |
390 | dSP; |
497 | dSP; |
… | |
… | |
392 | int do_croak = 0; |
499 | int do_croak = 0; |
393 | aio_req req; |
500 | aio_req req; |
394 | |
501 | |
395 | for (;;) |
502 | for (;;) |
396 | { |
503 | { |
397 | pthread_mutex_lock (&reslock); |
504 | LOCK (reslock); |
398 | req = ress; |
505 | req = reqq_shift (&res_queue); |
399 | |
506 | |
400 | if (req) |
507 | if (req) |
401 | { |
508 | { |
402 | ress = req->next; |
|
|
403 | |
|
|
404 | if (!ress) |
509 | if (!res_queue.size) |
405 | { |
510 | { |
406 | /* read any signals sent by the worker threads */ |
511 | /* read any signals sent by the worker threads */ |
407 | char buf [32]; |
512 | char buf [32]; |
408 | while (read (respipe [0], buf, 32) == 32) |
513 | while (read (respipe [0], buf, 32) == 32) |
409 | ; |
514 | ; |
410 | |
|
|
411 | rese = 0; |
|
|
412 | } |
515 | } |
413 | } |
516 | } |
414 | |
517 | |
415 | pthread_mutex_unlock (&reslock); |
518 | UNLOCK (reslock); |
416 | |
519 | |
417 | if (!req) |
520 | if (!req) |
418 | break; |
521 | break; |
419 | |
522 | |
420 | --nreqs; |
523 | --nreqs; |
… | |
… | |
455 | static void *aio_proc(void *arg); |
558 | static void *aio_proc(void *arg); |
456 | |
559 | |
457 | static void start_thread (void) |
560 | static void start_thread (void) |
458 | { |
561 | { |
459 | sigset_t fullsigset, oldsigset; |
562 | sigset_t fullsigset, oldsigset; |
460 | pthread_t tid; |
|
|
461 | pthread_attr_t attr; |
563 | pthread_attr_t attr; |
|
|
564 | |
|
|
565 | worker *wrk = calloc (1, sizeof (worker)); |
|
|
566 | |
|
|
567 | if (!wrk) |
|
|
568 | croak ("unable to allocate worker thread data"); |
462 | |
569 | |
463 | pthread_attr_init (&attr); |
570 | pthread_attr_init (&attr); |
464 | pthread_attr_setstacksize (&attr, STACKSIZE); |
571 | pthread_attr_setstacksize (&attr, STACKSIZE); |
465 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
572 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
466 | |
573 | |
467 | sigfillset (&fullsigset); |
574 | sigfillset (&fullsigset); |
|
|
575 | |
|
|
576 | LOCK (wrklock); |
468 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
577 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
469 | |
578 | |
470 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
579 | if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0) |
|
|
580 | { |
|
|
581 | wrk->prev = &wrk_first; |
|
|
582 | wrk->next = wrk_first.next; |
|
|
583 | wrk_first.next->prev = wrk; |
|
|
584 | wrk_first.next = wrk; |
471 | started++; |
585 | started++; |
|
|
586 | } |
|
|
587 | else |
|
|
588 | free (wrk); |
472 | |
589 | |
473 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
590 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
|
|
591 | UNLOCK (wrklock); |
474 | } |
592 | } |
475 | |
593 | |
476 | static void req_send (aio_req req) |
594 | static void req_send (aio_req req) |
477 | { |
595 | { |
478 | while (started < wanted && nreqs >= started) |
596 | while (started < wanted && nreqs >= started) |
479 | start_thread (); |
597 | start_thread (); |
480 | |
598 | |
481 | ++nreqs; |
599 | ++nreqs; |
482 | |
600 | |
483 | pthread_mutex_lock (&reqlock); |
601 | LOCK (reqlock); |
484 | |
602 | reqq_push (&req_queue, req); |
485 | req->next = 0; |
|
|
486 | |
|
|
487 | if (reqe) |
|
|
488 | { |
|
|
489 | reqe->next = req; |
|
|
490 | reqe = req; |
|
|
491 | } |
|
|
492 | else |
|
|
493 | reqe = reqs = req; |
|
|
494 | |
|
|
495 | pthread_cond_signal (&reqwait); |
603 | pthread_cond_signal (&reqwait); |
496 | pthread_mutex_unlock (&reqlock); |
604 | UNLOCK (reqlock); |
497 | |
|
|
498 | if (nreqs > max_outstanding) |
|
|
499 | for (;;) |
|
|
500 | { |
|
|
501 | poll_cb (); |
|
|
502 | |
|
|
503 | if (nreqs <= max_outstanding) |
|
|
504 | break; |
|
|
505 | |
|
|
506 | poll_wait (); |
|
|
507 | } |
|
|
508 | } |
605 | } |
509 | |
606 | |
510 | static void end_thread (void) |
607 | static void end_thread (void) |
511 | { |
608 | { |
512 | aio_req req; |
609 | aio_req req; |
|
|
610 | |
513 | Newz (0, req, 1, aio_cb); |
611 | Newz (0, req, 1, aio_cb); |
|
|
612 | |
514 | req->type = REQ_QUIT; |
613 | req->type = REQ_QUIT; |
|
|
614 | req->pri = PRI_MAX + PRI_BIAS; |
515 | |
615 | |
516 | req_send (req); |
616 | req_send (req); |
517 | } |
617 | } |
518 | |
618 | |
519 | static void min_parallel (int nthreads) |
619 | static void min_parallel (int nthreads) |
… | |
… | |
571 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
671 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
572 | { |
672 | { |
573 | ssize_t res; |
673 | ssize_t res; |
574 | off_t ooffset; |
674 | off_t ooffset; |
575 | |
675 | |
576 | pthread_mutex_lock (&preadwritelock); |
676 | LOCK (preadwritelock); |
577 | ooffset = lseek (fd, 0, SEEK_CUR); |
677 | ooffset = lseek (fd, 0, SEEK_CUR); |
578 | lseek (fd, offset, SEEK_SET); |
678 | lseek (fd, offset, SEEK_SET); |
579 | res = read (fd, buf, count); |
679 | res = read (fd, buf, count); |
580 | lseek (fd, ooffset, SEEK_SET); |
680 | lseek (fd, ooffset, SEEK_SET); |
581 | pthread_mutex_unlock (&preadwritelock); |
681 | UNLOCK (preadwritelock); |
582 | |
682 | |
583 | return res; |
683 | return res; |
584 | } |
684 | } |
585 | |
685 | |
586 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
686 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
587 | { |
687 | { |
588 | ssize_t res; |
688 | ssize_t res; |
589 | off_t ooffset; |
689 | off_t ooffset; |
590 | |
690 | |
591 | pthread_mutex_lock (&preadwritelock); |
691 | LOCK (preadwritelock); |
592 | ooffset = lseek (fd, 0, SEEK_CUR); |
692 | ooffset = lseek (fd, 0, SEEK_CUR); |
593 | lseek (fd, offset, SEEK_SET); |
693 | lseek (fd, offset, SEEK_SET); |
594 | res = write (fd, buf, count); |
694 | res = write (fd, buf, count); |
595 | lseek (fd, offset, SEEK_SET); |
695 | lseek (fd, offset, SEEK_SET); |
596 | pthread_mutex_unlock (&preadwritelock); |
696 | UNLOCK (preadwritelock); |
597 | |
697 | |
598 | return res; |
698 | return res; |
599 | } |
699 | } |
600 | #endif |
700 | #endif |
601 | |
701 | |
… | |
… | |
617 | pread (fd, aio_buf, len, offset); |
717 | pread (fd, aio_buf, len, offset); |
618 | offset += len; |
718 | offset += len; |
619 | count -= len; |
719 | count -= len; |
620 | } |
720 | } |
621 | |
721 | |
622 | fBUF; |
|
|
623 | |
|
|
624 | errno = 0; |
722 | errno = 0; |
625 | } |
723 | } |
626 | #endif |
724 | #endif |
627 | |
725 | |
628 | #if !HAVE_READDIR_R |
726 | #if !HAVE_READDIR_R |
… | |
… | |
633 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
731 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
634 | { |
732 | { |
635 | struct dirent *e; |
733 | struct dirent *e; |
636 | int errorno; |
734 | int errorno; |
637 | |
735 | |
638 | pthread_mutex_lock (&readdirlock); |
736 | LOCK (readdirlock); |
639 | |
737 | |
640 | e = readdir (dirp); |
738 | e = readdir (dirp); |
641 | errorno = errno; |
739 | errorno = errno; |
642 | |
740 | |
643 | if (e) |
741 | if (e) |
… | |
… | |
646 | strcpy (ent->d_name, e->d_name); |
744 | strcpy (ent->d_name, e->d_name); |
647 | } |
745 | } |
648 | else |
746 | else |
649 | *res = 0; |
747 | *res = 0; |
650 | |
748 | |
651 | pthread_mutex_unlock (&readdirlock); |
749 | UNLOCK (readdirlock); |
652 | |
750 | |
653 | errno = errorno; |
751 | errno = errorno; |
654 | return e ? 0 : -1; |
752 | return e ? 0 : -1; |
655 | } |
753 | } |
656 | #endif |
754 | #endif |
657 | |
755 | |
658 | /* sendfile always needs emulation */ |
756 | /* sendfile always needs emulation */ |
659 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
757 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) |
660 | { |
758 | { |
661 | ssize_t res; |
759 | ssize_t res; |
662 | |
760 | |
663 | if (!count) |
761 | if (!count) |
664 | return 0; |
762 | return 0; |
… | |
… | |
741 | |
839 | |
742 | offset += cnt; |
840 | offset += cnt; |
743 | res += cnt; |
841 | res += cnt; |
744 | count -= cnt; |
842 | count -= cnt; |
745 | } |
843 | } |
746 | |
|
|
747 | fBUF; |
|
|
748 | } |
844 | } |
749 | |
845 | |
750 | return res; |
846 | return res; |
751 | } |
847 | } |
752 | |
848 | |
753 | /* read a full directory */ |
849 | /* read a full directory */ |
754 | static int scandir_ (const char *path, void **namesp) |
850 | static void scandir_ (aio_req req, worker *self) |
755 | { |
851 | { |
756 | DIR *dirp; |
852 | DIR *dirp; |
757 | union |
853 | union |
758 | { |
854 | { |
759 | struct dirent d; |
855 | struct dirent d; |
… | |
… | |
764 | int memlen = 4096; |
860 | int memlen = 4096; |
765 | int memofs = 0; |
861 | int memofs = 0; |
766 | int res = 0; |
862 | int res = 0; |
767 | int errorno; |
863 | int errorno; |
768 | |
864 | |
769 | dirp = opendir (path); |
865 | LOCK (wrklock); |
770 | if (!dirp) |
866 | self->dirp = dirp = opendir (req->dataptr); |
771 | return -1; |
|
|
772 | |
|
|
773 | u = malloc (sizeof (*u)); |
867 | self->dbuf = u = malloc (sizeof (*u)); |
|
|
868 | UNLOCK (wrklock); |
|
|
869 | |
774 | names = malloc (memlen); |
870 | req->data2ptr = names = malloc (memlen); |
775 | |
871 | |
776 | if (u && names) |
872 | if (dirp && u && names) |
777 | for (;;) |
873 | for (;;) |
778 | { |
874 | { |
779 | errno = 0; |
875 | errno = 0; |
780 | readdir_r (dirp, &u->d, &entp); |
876 | readdir_r (dirp, &u->d, &entp); |
781 | |
877 | |
… | |
… | |
791 | res++; |
887 | res++; |
792 | |
888 | |
793 | while (memofs + len > memlen) |
889 | while (memofs + len > memlen) |
794 | { |
890 | { |
795 | memlen *= 2; |
891 | memlen *= 2; |
|
|
892 | LOCK (wrklock); |
796 | names = realloc (names, memlen); |
893 | req->data2ptr = names = realloc (names, memlen); |
|
|
894 | UNLOCK (wrklock); |
|
|
895 | |
797 | if (!names) |
896 | if (!names) |
798 | break; |
897 | break; |
799 | } |
898 | } |
800 | |
899 | |
801 | memcpy (names + memofs, name, len); |
900 | memcpy (names + memofs, name, len); |
802 | memofs += len; |
901 | memofs += len; |
803 | } |
902 | } |
804 | } |
903 | } |
805 | |
904 | |
806 | errorno = errno; |
|
|
807 | free (u); |
|
|
808 | closedir (dirp); |
|
|
809 | |
|
|
810 | if (errorno) |
905 | if (errno) |
811 | { |
|
|
812 | free (names); |
|
|
813 | errno = errorno; |
|
|
814 | res = -1; |
906 | res = -1; |
815 | } |
907 | |
816 | |
908 | req->result = res; |
817 | *namesp = (void *)names; |
|
|
818 | return res; |
|
|
819 | } |
909 | } |
820 | |
910 | |
821 | /*****************************************************************************/ |
911 | /*****************************************************************************/ |
822 | |
912 | |
823 | static void *aio_proc (void *thr_arg) |
913 | static void *aio_proc (void *thr_arg) |
824 | { |
914 | { |
825 | aio_req req; |
915 | aio_req req; |
826 | int type; |
916 | int type; |
|
|
917 | worker *self = (worker *)thr_arg; |
827 | |
918 | |
828 | do |
919 | do |
829 | { |
920 | { |
830 | pthread_mutex_lock (&reqlock); |
921 | LOCK (reqlock); |
831 | |
922 | |
832 | for (;;) |
923 | for (;;) |
833 | { |
924 | { |
834 | req = reqs; |
925 | self->req = req = reqq_shift (&req_queue); |
835 | |
|
|
836 | if (reqs) |
|
|
837 | { |
|
|
838 | reqs = reqs->next; |
|
|
839 | if (!reqs) reqe = 0; |
|
|
840 | } |
|
|
841 | |
926 | |
842 | if (req) |
927 | if (req) |
843 | break; |
928 | break; |
844 | |
929 | |
845 | pthread_cond_wait (&reqwait, &reqlock); |
930 | pthread_cond_wait (&reqwait, &reqlock); |
846 | } |
931 | } |
847 | |
932 | |
848 | pthread_mutex_unlock (&reqlock); |
933 | UNLOCK (reqlock); |
849 | |
934 | |
850 | errno = 0; /* strictly unnecessary */ |
935 | errno = 0; /* strictly unnecessary */ |
851 | type = req->type; /* remember type for QUIT check */ |
936 | type = req->type; /* remember type for QUIT check */ |
852 | |
937 | |
853 | if (!(req->flags & FLAG_CANCELLED)) |
938 | if (!(req->flags & FLAG_CANCELLED)) |
… | |
… | |
855 | { |
940 | { |
856 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
941 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
857 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
942 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
858 | |
943 | |
859 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
944 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
860 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; |
945 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break; |
861 | |
946 | |
862 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
947 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
863 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
948 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
864 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
949 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
865 | |
950 | |
… | |
… | |
871 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
956 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
872 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
957 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
873 | |
958 | |
874 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
959 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
875 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
960 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
876 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
961 | case REQ_READDIR: scandir_ (req, self); break; |
877 | |
962 | |
878 | case REQ_SLEEP: |
963 | case REQ_BUSY: |
879 | { |
964 | { |
880 | struct timeval tv; |
965 | struct timeval tv; |
881 | |
966 | |
882 | tv.tv_sec = req->fd; |
967 | tv.tv_sec = req->fd; |
883 | tv.tv_usec = req->fd2; |
968 | tv.tv_usec = req->fd2; |
… | |
… | |
895 | break; |
980 | break; |
896 | } |
981 | } |
897 | |
982 | |
898 | req->errorno = errno; |
983 | req->errorno = errno; |
899 | |
984 | |
900 | pthread_mutex_lock (&reslock); |
985 | LOCK (reslock); |
901 | |
986 | |
902 | req->next = 0; |
987 | if (!reqq_push (&res_queue, req)) |
903 | |
|
|
904 | if (rese) |
|
|
905 | { |
|
|
906 | rese->next = req; |
|
|
907 | rese = req; |
|
|
908 | } |
|
|
909 | else |
|
|
910 | { |
|
|
911 | rese = ress = req; |
|
|
912 | |
|
|
913 | /* write a dummy byte to the pipe so fh becomes ready */ |
988 | /* write a dummy byte to the pipe so fh becomes ready */ |
914 | write (respipe [1], &respipe, 1); |
989 | write (respipe [1], &respipe, 1); |
915 | } |
|
|
916 | |
990 | |
917 | pthread_mutex_unlock (&reslock); |
991 | self->req = 0; |
|
|
992 | worker_clear (self); |
|
|
993 | |
|
|
994 | UNLOCK (reslock); |
918 | } |
995 | } |
919 | while (type != REQ_QUIT); |
996 | while (type != REQ_QUIT); |
920 | |
997 | |
|
|
998 | LOCK (wrklock); |
|
|
999 | worker_free (self); |
|
|
1000 | UNLOCK (wrklock); |
|
|
1001 | |
921 | return 0; |
1002 | return 0; |
922 | } |
1003 | } |
923 | |
1004 | |
924 | /*****************************************************************************/ |
1005 | /*****************************************************************************/ |
925 | |
1006 | |
926 | static void atfork_prepare (void) |
1007 | static void atfork_prepare (void) |
927 | { |
1008 | { |
928 | pthread_mutex_lock (&reqlock); |
1009 | LOCK (wrklock); |
929 | pthread_mutex_lock (&reslock); |
1010 | LOCK (reqlock); |
|
|
1011 | LOCK (reslock); |
930 | #if !HAVE_PREADWRITE |
1012 | #if !HAVE_PREADWRITE |
931 | pthread_mutex_lock (&preadwritelock); |
1013 | LOCK (preadwritelock); |
932 | #endif |
1014 | #endif |
933 | #if !HAVE_READDIR_R |
1015 | #if !HAVE_READDIR_R |
934 | pthread_mutex_lock (&readdirlock); |
1016 | LOCK (readdirlock); |
935 | #endif |
1017 | #endif |
936 | } |
1018 | } |
937 | |
1019 | |
938 | static void atfork_parent (void) |
1020 | static void atfork_parent (void) |
939 | { |
1021 | { |
940 | #if !HAVE_READDIR_R |
1022 | #if !HAVE_READDIR_R |
941 | pthread_mutex_unlock (&readdirlock); |
1023 | UNLOCK (readdirlock); |
942 | #endif |
1024 | #endif |
943 | #if !HAVE_PREADWRITE |
1025 | #if !HAVE_PREADWRITE |
944 | pthread_mutex_unlock (&preadwritelock); |
1026 | UNLOCK (preadwritelock); |
945 | #endif |
1027 | #endif |
946 | pthread_mutex_unlock (&reslock); |
1028 | UNLOCK (reslock); |
947 | pthread_mutex_unlock (&reqlock); |
1029 | UNLOCK (reqlock); |
|
|
1030 | UNLOCK (wrklock); |
948 | } |
1031 | } |
949 | |
1032 | |
950 | static void atfork_child (void) |
1033 | static void atfork_child (void) |
951 | { |
1034 | { |
952 | aio_req prv; |
1035 | aio_req prv; |
953 | |
1036 | |
|
|
1037 | while (prv = reqq_shift (&req_queue)) |
|
|
1038 | req_free (prv); |
|
|
1039 | |
|
|
1040 | while (prv = reqq_shift (&res_queue)) |
|
|
1041 | req_free (prv); |
|
|
1042 | |
|
|
1043 | while (wrk_first.next != &wrk_first) |
|
|
1044 | { |
|
|
1045 | worker *wrk = wrk_first.next; |
|
|
1046 | |
|
|
1047 | if (wrk->req) |
|
|
1048 | req_free (wrk->req); |
|
|
1049 | |
|
|
1050 | worker_clear (wrk); |
|
|
1051 | worker_free (wrk); |
|
|
1052 | } |
|
|
1053 | |
954 | started = 0; |
1054 | started = 0; |
955 | |
1055 | nreqs = 0; |
956 | while (reqs) |
|
|
957 | { |
|
|
958 | prv = reqs; |
|
|
959 | reqs = prv->next; |
|
|
960 | req_free (prv); |
|
|
961 | } |
|
|
962 | |
|
|
963 | reqs = reqe = 0; |
|
|
964 | |
|
|
965 | while (ress) |
|
|
966 | { |
|
|
967 | prv = ress; |
|
|
968 | ress = prv->next; |
|
|
969 | req_free (prv); |
|
|
970 | } |
|
|
971 | |
|
|
972 | ress = rese = 0; |
|
|
973 | |
1056 | |
974 | close (respipe [0]); |
1057 | close (respipe [0]); |
975 | close (respipe [1]); |
1058 | close (respipe [1]); |
976 | create_pipe (); |
1059 | create_pipe (); |
977 | |
1060 | |
… | |
… | |
1022 | void |
1105 | void |
1023 | max_parallel (nthreads) |
1106 | max_parallel (nthreads) |
1024 | int nthreads |
1107 | int nthreads |
1025 | PROTOTYPE: $ |
1108 | PROTOTYPE: $ |
1026 | |
1109 | |
1027 | int |
|
|
1028 | max_outstanding (nreqs) |
|
|
1029 | int nreqs |
|
|
1030 | PROTOTYPE: $ |
|
|
1031 | CODE: |
|
|
1032 | RETVAL = max_outstanding; |
|
|
1033 | max_outstanding = nreqs; |
|
|
1034 | |
|
|
1035 | void |
1110 | void |
1036 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
1111 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
1037 | SV * pathname |
1112 | SV * pathname |
1038 | int flags |
1113 | int flags |
1039 | int mode |
1114 | int mode |
… | |
… | |
1253 | |
1328 | |
1254 | REQ_SEND; |
1329 | REQ_SEND; |
1255 | } |
1330 | } |
1256 | |
1331 | |
1257 | void |
1332 | void |
1258 | aio_sleep (delay,callback=&PL_sv_undef) |
1333 | aio_busy (delay,callback=&PL_sv_undef) |
1259 | double delay |
1334 | double delay |
1260 | SV * callback |
1335 | SV * callback |
1261 | PPCODE: |
1336 | PPCODE: |
1262 | { |
1337 | { |
1263 | dREQ; |
1338 | dREQ; |
1264 | |
1339 | |
1265 | req->type = REQ_SLEEP; |
1340 | req->type = REQ_BUSY; |
1266 | req->fd = delay < 0. ? 0 : delay; |
1341 | req->fd = delay < 0. ? 0 : delay; |
1267 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1342 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1268 | |
1343 | |
1269 | REQ_SEND; |
1344 | REQ_SEND; |
1270 | } |
1345 | } |
… | |
… | |
1293 | req->type = REQ_NOP; |
1368 | req->type = REQ_NOP; |
1294 | |
1369 | |
1295 | REQ_SEND; |
1370 | REQ_SEND; |
1296 | } |
1371 | } |
1297 | |
1372 | |
1298 | #if 0 |
|
|
1299 | |
|
|
1300 | void |
1373 | void |
1301 | aio_pri (int pri = DEFAULT_PRI) |
1374 | aioreq_pri (int pri = DEFAULT_PRI) |
1302 | CODE: |
1375 | CODE: |
1303 | if (pri < PRI_MIN) pri = PRI_MIN; |
1376 | if (pri < PRI_MIN) pri = PRI_MIN; |
1304 | if (pri > PRI_MAX) pri = PRI_MAX; |
1377 | if (pri > PRI_MAX) pri = PRI_MAX; |
1305 | next_pri = pri + PRI_BIAS; |
1378 | next_pri = pri + PRI_BIAS; |
1306 | |
1379 | |
1307 | #endif |
1380 | void |
|
|
1381 | aioreq_nice (int nice = 0) |
|
|
1382 | CODE: |
|
|
1383 | nice = next_pri - nice; |
|
|
1384 | if (nice < PRI_MIN) nice = PRI_MIN; |
|
|
1385 | if (nice > PRI_MAX) nice = PRI_MAX; |
|
|
1386 | next_pri = nice + PRI_BIAS; |
1308 | |
1387 | |
1309 | void |
1388 | void |
1310 | flush () |
1389 | flush () |
1311 | PROTOTYPE: |
1390 | PROTOTYPE: |
1312 | CODE: |
1391 | CODE: |
… | |
… | |
1406 | } |
1485 | } |
1407 | } |
1486 | } |
1408 | } |
1487 | } |
1409 | |
1488 | |
1410 | void |
1489 | void |
|
|
1490 | cancel_subs (aio_req_ornot req) |
|
|
1491 | CODE: |
|
|
1492 | req_cancel_subs (req); |
|
|
1493 | |
|
|
1494 | void |
1411 | result (aio_req grp, ...) |
1495 | result (aio_req grp, ...) |
1412 | CODE: |
1496 | CODE: |
1413 | { |
1497 | { |
1414 | int i; |
1498 | int i; |
1415 | AV *av = newAV (); |
1499 | AV *av = newAV (); |
… | |
… | |
1420 | SvREFCNT_dec (grp->data); |
1504 | SvREFCNT_dec (grp->data); |
1421 | grp->data = (SV *)av; |
1505 | grp->data = (SV *)av; |
1422 | } |
1506 | } |
1423 | |
1507 | |
1424 | void |
1508 | void |
1425 | feed_limit (aio_req grp, int limit) |
1509 | limit (aio_req grp, int limit) |
1426 | CODE: |
1510 | CODE: |
1427 | grp->fd2 = limit; |
1511 | grp->fd2 = limit; |
1428 | aio_grp_feed (grp); |
1512 | aio_grp_feed (grp); |
1429 | |
1513 | |
1430 | void |
1514 | void |