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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 |
… | |
… | |
46 | # define NAME_MAX 4096 |
49 | # define NAME_MAX 4096 |
47 | #endif |
50 | #endif |
48 | |
51 | |
49 | #if __ia64 |
52 | #if __ia64 |
50 | # define STACKSIZE 65536 |
53 | # define STACKSIZE 65536 |
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54 | #elif __i386 || __x86_64 /* 16k is unreasonably high :( */ |
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55 | # define STACKSIZE PTHREAD_STACK_MIN |
51 | #else |
56 | #else |
52 | # define STACKSIZE 8192 |
57 | # define STACKSIZE 16384 |
53 | #endif |
58 | #endif |
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59 | |
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60 | /* buffer size for various temporary buffers */ |
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61 | #define AIO_BUFSIZE 65536 |
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62 | |
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63 | #define dBUF \ |
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64 | char *aio_buf; \ |
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65 | LOCK (wrklock); \ |
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66 | self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ |
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67 | UNLOCK (wrklock); \ |
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68 | if (!aio_buf) \ |
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69 | return -1; |
54 | |
70 | |
55 | enum { |
71 | enum { |
56 | REQ_QUIT, |
72 | REQ_QUIT, |
57 | REQ_OPEN, REQ_CLOSE, |
73 | REQ_OPEN, REQ_CLOSE, |
58 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
74 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
… | |
… | |
61 | REQ_FSYNC, REQ_FDATASYNC, |
77 | REQ_FSYNC, REQ_FDATASYNC, |
62 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
78 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
63 | REQ_READDIR, |
79 | REQ_READDIR, |
64 | REQ_LINK, REQ_SYMLINK, |
80 | REQ_LINK, REQ_SYMLINK, |
65 | REQ_GROUP, REQ_NOP, |
81 | REQ_GROUP, REQ_NOP, |
66 | REQ_SLEEP, |
82 | REQ_BUSY, |
67 | }; |
83 | }; |
68 | |
84 | |
69 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
85 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
70 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
86 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
71 | |
87 | |
… | |
… | |
105 | PRI_MIN = -4, |
121 | PRI_MIN = -4, |
106 | PRI_MAX = 4, |
122 | PRI_MAX = 4, |
107 | |
123 | |
108 | DEFAULT_PRI = 0, |
124 | DEFAULT_PRI = 0, |
109 | PRI_BIAS = -PRI_MIN, |
125 | PRI_BIAS = -PRI_MIN, |
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126 | NUM_PRI = PRI_MAX + PRI_BIAS + 1, |
110 | }; |
127 | }; |
111 | |
128 | |
112 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
129 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
113 | |
130 | |
114 | static int started, wanted; |
131 | static int started, wanted; |
… | |
… | |
120 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
137 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
121 | #else |
138 | #else |
122 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
139 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
123 | #endif |
140 | #endif |
124 | |
141 | |
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142 | #define LOCK(mutex) pthread_mutex_lock (&(mutex)) |
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143 | #define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) |
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144 | |
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145 | /* worker threasd management */ |
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146 | static pthread_mutex_t wrklock = AIO_MUTEX_INIT; |
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147 | |
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148 | typedef struct worker { |
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149 | /* locked by wrklock */ |
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150 | struct worker *prev, *next; |
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151 | |
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152 | pthread_t tid; |
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153 | |
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154 | /* locked by reslock, reqlock or wrklock */ |
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155 | aio_req req; /* currently processed request */ |
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156 | void *dbuf; |
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157 | DIR *dirp; |
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158 | } worker; |
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159 | |
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160 | static worker wrk_first = { &wrk_first, &wrk_first, 0 }; |
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161 | |
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162 | static void worker_clear (worker *wrk) |
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163 | { |
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164 | if (wrk->dirp) |
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165 | { |
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166 | closedir (wrk->dirp); |
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167 | wrk->dirp = 0; |
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168 | } |
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169 | |
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170 | if (wrk->dbuf) |
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171 | { |
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172 | free (wrk->dbuf); |
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173 | wrk->dbuf = 0; |
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174 | } |
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175 | } |
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176 | |
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177 | static void worker_free (worker *wrk) |
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178 | { |
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179 | wrk->next->prev = wrk->prev; |
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180 | wrk->prev->next = wrk->next; |
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181 | |
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182 | free (wrk); |
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183 | } |
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184 | |
125 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
185 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
126 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
186 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
127 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
187 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
128 | |
188 | |
129 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
189 | /* |
130 | static volatile aio_req ress, rese; /* queue start, queue end */ |
190 | * a somewhat faster data structure might be nice, but |
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191 | * with 8 priorities this actually needs <20 insns |
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192 | * per shift, the most expensive operation. |
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193 | */ |
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194 | typedef struct { |
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195 | aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */ |
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196 | int size; |
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197 | } reqq; |
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198 | |
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199 | static reqq req_queue; |
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200 | static reqq res_queue; |
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201 | |
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202 | int reqq_push (reqq *q, aio_req req) |
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203 | { |
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204 | int pri = req->pri; |
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205 | req->next = 0; |
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206 | |
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207 | if (q->qe[pri]) |
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208 | { |
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209 | q->qe[pri]->next = req; |
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210 | q->qe[pri] = req; |
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211 | } |
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212 | else |
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213 | q->qe[pri] = q->qs[pri] = req; |
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214 | |
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215 | return q->size++; |
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216 | } |
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217 | |
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218 | aio_req reqq_shift (reqq *q) |
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219 | { |
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220 | int pri; |
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221 | |
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222 | if (!q->size) |
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223 | return 0; |
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224 | |
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225 | --q->size; |
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226 | |
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227 | for (pri = NUM_PRI; pri--; ) |
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228 | { |
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229 | aio_req req = q->qs[pri]; |
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230 | |
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231 | if (req) |
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232 | { |
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233 | if (!(q->qs[pri] = req->next)) |
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234 | q->qe[pri] = 0; |
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235 | |
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236 | return req; |
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237 | } |
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238 | } |
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239 | |
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240 | abort (); |
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241 | } |
131 | |
242 | |
132 | static void req_invoke (aio_req req); |
243 | static void req_invoke (aio_req req); |
133 | static void req_free (aio_req req); |
244 | static void req_free (aio_req req); |
134 | |
245 | |
135 | /* must be called at most once */ |
246 | /* must be called at most once */ |
… | |
… | |
169 | ENTER; |
280 | ENTER; |
170 | SAVETMPS; |
281 | SAVETMPS; |
171 | PUSHMARK (SP); |
282 | PUSHMARK (SP); |
172 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
283 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
173 | PUTBACK; |
284 | PUTBACK; |
174 | call_sv (grp->fh2, G_VOID | G_EVAL); |
285 | call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); |
175 | SPAGAIN; |
286 | SPAGAIN; |
176 | FREETMPS; |
287 | FREETMPS; |
177 | LEAVE; |
288 | LEAVE; |
178 | } |
289 | } |
179 | |
290 | |
… | |
… | |
206 | { |
317 | { |
207 | fd_set rfd; |
318 | fd_set rfd; |
208 | |
319 | |
209 | while (nreqs) |
320 | while (nreqs) |
210 | { |
321 | { |
211 | aio_req req; |
322 | int size; |
212 | #if !(__x86 || __x86_64) /* safe without sempahore on this archs */ |
323 | #if !(__i386 || __x86_64) /* safe without sempahore on these archs */ |
213 | pthread_mutex_lock (&reslock); |
324 | LOCK (reslock); |
214 | #endif |
325 | #endif |
215 | req = ress; |
326 | size = res_queue.size; |
216 | #if !(__x86 || __x86_64) /* safe without sempahore on this archs */ |
327 | #if !(__i386 || __x86_64) /* safe without sempahore on these archs */ |
217 | pthread_mutex_unlock (&reslock); |
328 | UNLOCK (reslock); |
218 | #endif |
329 | #endif |
219 | |
330 | |
220 | if (req) |
331 | if (size) |
221 | return; |
332 | return; |
222 | |
333 | |
223 | FD_ZERO(&rfd); |
334 | FD_ZERO(&rfd); |
224 | FD_SET(respipe [0], &rfd); |
335 | FD_SET(respipe [0], &rfd); |
225 | |
336 | |
… | |
… | |
228 | } |
339 | } |
229 | |
340 | |
230 | static void req_invoke (aio_req req) |
341 | static void req_invoke (aio_req req) |
231 | { |
342 | { |
232 | dSP; |
343 | dSP; |
233 | int errorno = errno; |
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234 | |
344 | |
235 | if (req->flags & FLAG_CANCELLED || !SvOK (req->callback)) |
345 | if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
236 | return; |
346 | { |
237 | |
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238 | errno = req->errorno; |
347 | errno = req->errorno; |
239 | |
348 | |
240 | ENTER; |
349 | ENTER; |
241 | SAVETMPS; |
350 | SAVETMPS; |
242 | PUSHMARK (SP); |
351 | PUSHMARK (SP); |
243 | EXTEND (SP, 1); |
352 | EXTEND (SP, 1); |
244 | |
353 | |
245 | switch (req->type) |
354 | switch (req->type) |
246 | { |
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247 | case REQ_READDIR: |
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248 | { |
355 | { |
249 | SV *rv = &PL_sv_undef; |
356 | case REQ_READDIR: |
250 | |
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251 | if (req->result >= 0) |
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252 | { |
357 | { |
253 | char *buf = req->data2ptr; |
358 | SV *rv = &PL_sv_undef; |
254 | AV *av = newAV (); |
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255 | |
359 | |
256 | while (req->result) |
360 | if (req->result >= 0) |
257 | { |
361 | { |
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362 | int i; |
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363 | char *buf = req->data2ptr; |
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364 | AV *av = newAV (); |
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365 | |
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366 | av_extend (av, req->result - 1); |
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367 | |
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368 | for (i = 0; i < req->result; ++i) |
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369 | { |
258 | SV *sv = newSVpv (buf, 0); |
370 | SV *sv = newSVpv (buf, 0); |
259 | |
371 | |
260 | av_push (av, sv); |
372 | av_store (av, i, sv); |
261 | buf += SvCUR (sv) + 1; |
373 | buf += SvCUR (sv) + 1; |
262 | req->result--; |
374 | } |
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375 | |
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376 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
263 | } |
377 | } |
264 | |
378 | |
265 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
379 | PUSHs (rv); |
266 | } |
380 | } |
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381 | break; |
267 | |
382 | |
268 | PUSHs (rv); |
383 | case REQ_OPEN: |
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384 | { |
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385 | /* convert fd to fh */ |
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386 | SV *fh; |
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387 | |
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388 | PUSHs (sv_2mortal (newSViv (req->result))); |
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389 | PUTBACK; |
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390 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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391 | SPAGAIN; |
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392 | |
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393 | fh = SvREFCNT_inc (POPs); |
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394 | |
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395 | PUSHMARK (SP); |
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396 | XPUSHs (sv_2mortal (fh)); |
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397 | } |
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398 | break; |
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399 | |
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400 | case REQ_GROUP: |
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401 | req->fd = 2; /* mark group as finished */ |
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402 | |
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403 | if (req->data) |
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404 | { |
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405 | int i; |
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406 | AV *av = (AV *)req->data; |
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407 | |
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408 | EXTEND (SP, AvFILL (av) + 1); |
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409 | for (i = 0; i <= AvFILL (av); ++i) |
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410 | PUSHs (*av_fetch (av, i, 0)); |
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411 | } |
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412 | break; |
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413 | |
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414 | case REQ_NOP: |
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415 | case REQ_BUSY: |
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416 | break; |
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417 | |
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418 | default: |
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419 | PUSHs (sv_2mortal (newSViv (req->result))); |
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420 | break; |
269 | } |
421 | } |
270 | break; |
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271 | |
422 | |
272 | case REQ_OPEN: |
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273 | { |
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274 | /* convert fd to fh */ |
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275 | SV *fh; |
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276 | |
423 | |
277 | PUSHs (sv_2mortal (newSViv (req->result))); |
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278 | PUTBACK; |
424 | PUTBACK; |
279 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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280 | SPAGAIN; |
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281 | |
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282 | fh = SvREFCNT_inc (POPs); |
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283 | |
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284 | PUSHMARK (SP); |
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285 | XPUSHs (sv_2mortal (fh)); |
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286 | } |
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287 | break; |
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288 | |
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289 | case REQ_GROUP: |
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290 | req->fd = 2; /* mark group as finished */ |
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291 | |
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292 | if (req->data) |
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293 | { |
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294 | int i; |
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295 | AV *av = (AV *)req->data; |
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296 | |
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297 | EXTEND (SP, AvFILL (av) + 1); |
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298 | for (i = 0; i <= AvFILL (av); ++i) |
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299 | PUSHs (*av_fetch (av, i, 0)); |
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300 | } |
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301 | break; |
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302 | |
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303 | case REQ_NOP: |
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304 | case REQ_SLEEP: |
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305 | break; |
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306 | |
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307 | default: |
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308 | PUSHs (sv_2mortal (newSViv (req->result))); |
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309 | break; |
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310 | } |
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311 | |
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312 | |
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313 | PUTBACK; |
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314 | call_sv (req->callback, G_VOID | G_EVAL); |
425 | call_sv (req->callback, G_VOID | G_EVAL); |
315 | SPAGAIN; |
426 | SPAGAIN; |
316 | |
427 | |
317 | FREETMPS; |
428 | FREETMPS; |
318 | LEAVE; |
429 | LEAVE; |
319 | |
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320 | errno = errorno; |
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321 | |
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322 | if (SvTRUE (ERRSV)) |
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323 | { |
430 | } |
324 | req_free (req); |
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325 | croak (0); |
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326 | } |
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327 | } |
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328 | |
431 | |
329 | static void req_free (aio_req req) |
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330 | { |
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331 | if (req->grp) |
432 | if (req->grp) |
332 | { |
433 | { |
333 | aio_req grp = req->grp; |
434 | aio_req grp = req->grp; |
334 | |
435 | |
335 | /* unlink request */ |
436 | /* unlink request */ |
… | |
… | |
340 | grp->grp_first = req->grp_next; |
441 | grp->grp_first = req->grp_next; |
341 | |
442 | |
342 | aio_grp_dec (grp); |
443 | aio_grp_dec (grp); |
343 | } |
444 | } |
344 | |
445 | |
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446 | if (SvTRUE (ERRSV)) |
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447 | { |
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448 | req_free (req); |
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449 | croak (0); |
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450 | } |
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451 | } |
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452 | |
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453 | static void req_free (aio_req req) |
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454 | { |
345 | if (req->self) |
455 | if (req->self) |
346 | { |
456 | { |
347 | sv_unmagic (req->self, PERL_MAGIC_ext); |
457 | sv_unmagic (req->self, PERL_MAGIC_ext); |
348 | SvREFCNT_dec (req->self); |
458 | SvREFCNT_dec (req->self); |
349 | } |
459 | } |
… | |
… | |
352 | SvREFCNT_dec (req->fh); |
462 | SvREFCNT_dec (req->fh); |
353 | SvREFCNT_dec (req->fh2); |
463 | SvREFCNT_dec (req->fh2); |
354 | SvREFCNT_dec (req->callback); |
464 | SvREFCNT_dec (req->callback); |
355 | Safefree (req->statdata); |
465 | Safefree (req->statdata); |
356 | |
466 | |
357 | if (req->type == REQ_READDIR && req->result >= 0) |
467 | if (req->type == REQ_READDIR) |
358 | free (req->data2ptr); |
468 | free (req->data2ptr); |
359 | |
469 | |
360 | Safefree (req); |
470 | Safefree (req); |
361 | } |
471 | } |
362 | |
472 | |
… | |
… | |
380 | int do_croak = 0; |
490 | int do_croak = 0; |
381 | aio_req req; |
491 | aio_req req; |
382 | |
492 | |
383 | for (;;) |
493 | for (;;) |
384 | { |
494 | { |
385 | pthread_mutex_lock (&reslock); |
495 | LOCK (reslock); |
386 | req = ress; |
496 | req = reqq_shift (&res_queue); |
387 | |
497 | |
388 | if (req) |
498 | if (req) |
389 | { |
499 | { |
390 | ress = req->next; |
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391 | |
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392 | if (!ress) |
500 | if (!res_queue.size) |
393 | { |
501 | { |
394 | /* read any signals sent by the worker threads */ |
502 | /* read any signals sent by the worker threads */ |
395 | char buf [32]; |
503 | char buf [32]; |
396 | while (read (respipe [0], buf, 32) == 32) |
504 | while (read (respipe [0], buf, 32) == 32) |
397 | ; |
505 | ; |
398 | |
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399 | rese = 0; |
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400 | } |
506 | } |
401 | } |
507 | } |
402 | |
508 | |
403 | pthread_mutex_unlock (&reslock); |
509 | UNLOCK (reslock); |
404 | |
510 | |
405 | if (!req) |
511 | if (!req) |
406 | break; |
512 | break; |
407 | |
513 | |
408 | --nreqs; |
514 | --nreqs; |
… | |
… | |
442 | |
548 | |
443 | static void *aio_proc(void *arg); |
549 | static void *aio_proc(void *arg); |
444 | |
550 | |
445 | static void start_thread (void) |
551 | static void start_thread (void) |
446 | { |
552 | { |
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553 | worker *wrk = calloc (1, sizeof (worker)); |
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554 | |
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555 | if (!wrk) |
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556 | croak ("unable to allocate worker thread data"); |
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557 | |
447 | sigset_t fullsigset, oldsigset; |
558 | sigset_t fullsigset, oldsigset; |
448 | pthread_t tid; |
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449 | pthread_attr_t attr; |
559 | pthread_attr_t attr; |
450 | |
560 | |
451 | pthread_attr_init (&attr); |
561 | pthread_attr_init (&attr); |
452 | pthread_attr_setstacksize (&attr, STACKSIZE); |
562 | pthread_attr_setstacksize (&attr, STACKSIZE); |
453 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
563 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
454 | |
564 | |
455 | sigfillset (&fullsigset); |
565 | sigfillset (&fullsigset); |
|
|
566 | |
|
|
567 | LOCK (wrklock); |
456 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
568 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
457 | |
569 | |
458 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
570 | if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0) |
|
|
571 | { |
|
|
572 | wrk->prev = &wrk_first; |
|
|
573 | wrk->next = wrk_first.next; |
|
|
574 | wrk_first.next->prev = wrk; |
|
|
575 | wrk_first.next = wrk; |
459 | started++; |
576 | started++; |
|
|
577 | } |
|
|
578 | else |
|
|
579 | free (wrk); |
460 | |
580 | |
461 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
581 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
|
|
582 | UNLOCK (wrklock); |
462 | } |
583 | } |
463 | |
584 | |
464 | static void req_send (aio_req req) |
585 | static void req_send (aio_req req) |
465 | { |
586 | { |
466 | while (started < wanted && nreqs >= started) |
587 | while (started < wanted && nreqs >= started) |
467 | start_thread (); |
588 | start_thread (); |
468 | |
589 | |
469 | ++nreqs; |
590 | ++nreqs; |
470 | |
591 | |
471 | pthread_mutex_lock (&reqlock); |
592 | LOCK (reqlock); |
472 | |
593 | reqq_push (&req_queue, req); |
473 | req->next = 0; |
|
|
474 | |
|
|
475 | if (reqe) |
|
|
476 | { |
|
|
477 | reqe->next = req; |
|
|
478 | reqe = req; |
|
|
479 | } |
|
|
480 | else |
|
|
481 | reqe = reqs = req; |
|
|
482 | |
|
|
483 | pthread_cond_signal (&reqwait); |
594 | pthread_cond_signal (&reqwait); |
484 | pthread_mutex_unlock (&reqlock); |
595 | UNLOCK (reqlock); |
485 | |
596 | |
486 | if (nreqs > max_outstanding) |
597 | if (nreqs > max_outstanding) |
487 | for (;;) |
598 | for (;;) |
488 | { |
599 | { |
489 | poll_cb (); |
600 | poll_cb (); |
… | |
… | |
496 | } |
607 | } |
497 | |
608 | |
498 | static void end_thread (void) |
609 | static void end_thread (void) |
499 | { |
610 | { |
500 | aio_req req; |
611 | aio_req req; |
|
|
612 | |
501 | Newz (0, req, 1, aio_cb); |
613 | Newz (0, req, 1, aio_cb); |
|
|
614 | |
502 | req->type = REQ_QUIT; |
615 | req->type = REQ_QUIT; |
|
|
616 | req->pri = PRI_MAX + PRI_BIAS; |
503 | |
617 | |
504 | req_send (req); |
618 | req_send (req); |
505 | } |
619 | } |
506 | |
620 | |
507 | static void min_parallel (int nthreads) |
621 | static void min_parallel (int nthreads) |
… | |
… | |
559 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
673 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
560 | { |
674 | { |
561 | ssize_t res; |
675 | ssize_t res; |
562 | off_t ooffset; |
676 | off_t ooffset; |
563 | |
677 | |
564 | pthread_mutex_lock (&preadwritelock); |
678 | LOCK (preadwritelock); |
565 | ooffset = lseek (fd, 0, SEEK_CUR); |
679 | ooffset = lseek (fd, 0, SEEK_CUR); |
566 | lseek (fd, offset, SEEK_SET); |
680 | lseek (fd, offset, SEEK_SET); |
567 | res = read (fd, buf, count); |
681 | res = read (fd, buf, count); |
568 | lseek (fd, ooffset, SEEK_SET); |
682 | lseek (fd, ooffset, SEEK_SET); |
569 | pthread_mutex_unlock (&preadwritelock); |
683 | UNLOCK (preadwritelock); |
570 | |
684 | |
571 | return res; |
685 | return res; |
572 | } |
686 | } |
573 | |
687 | |
574 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
688 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
575 | { |
689 | { |
576 | ssize_t res; |
690 | ssize_t res; |
577 | off_t ooffset; |
691 | off_t ooffset; |
578 | |
692 | |
579 | pthread_mutex_lock (&preadwritelock); |
693 | LOCK (preadwritelock); |
580 | ooffset = lseek (fd, 0, SEEK_CUR); |
694 | ooffset = lseek (fd, 0, SEEK_CUR); |
581 | lseek (fd, offset, SEEK_SET); |
695 | lseek (fd, offset, SEEK_SET); |
582 | res = write (fd, buf, count); |
696 | res = write (fd, buf, count); |
583 | lseek (fd, offset, SEEK_SET); |
697 | lseek (fd, offset, SEEK_SET); |
584 | pthread_mutex_unlock (&preadwritelock); |
698 | UNLOCK (preadwritelock); |
585 | |
699 | |
586 | return res; |
700 | return res; |
587 | } |
701 | } |
588 | #endif |
702 | #endif |
589 | |
703 | |
… | |
… | |
594 | #if !HAVE_READAHEAD |
708 | #if !HAVE_READAHEAD |
595 | # define readahead aio_readahead |
709 | # define readahead aio_readahead |
596 | |
710 | |
597 | static ssize_t readahead (int fd, off_t offset, size_t count) |
711 | static ssize_t readahead (int fd, off_t offset, size_t count) |
598 | { |
712 | { |
599 | char readahead_buf[4096]; |
713 | dBUF; |
600 | |
714 | |
601 | while (count > 0) |
715 | while (count > 0) |
602 | { |
716 | { |
603 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
717 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
604 | |
718 | |
605 | pread (fd, readahead_buf, len, offset); |
719 | pread (fd, aio_buf, len, offset); |
606 | offset += len; |
720 | offset += len; |
607 | count -= len; |
721 | count -= len; |
608 | } |
722 | } |
609 | |
723 | |
610 | errno = 0; |
724 | errno = 0; |
… | |
… | |
619 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
733 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
620 | { |
734 | { |
621 | struct dirent *e; |
735 | struct dirent *e; |
622 | int errorno; |
736 | int errorno; |
623 | |
737 | |
624 | pthread_mutex_lock (&readdirlock); |
738 | LOCK (readdirlock); |
625 | |
739 | |
626 | e = readdir (dirp); |
740 | e = readdir (dirp); |
627 | errorno = errno; |
741 | errorno = errno; |
628 | |
742 | |
629 | if (e) |
743 | if (e) |
… | |
… | |
632 | strcpy (ent->d_name, e->d_name); |
746 | strcpy (ent->d_name, e->d_name); |
633 | } |
747 | } |
634 | else |
748 | else |
635 | *res = 0; |
749 | *res = 0; |
636 | |
750 | |
637 | pthread_mutex_unlock (&readdirlock); |
751 | UNLOCK (readdirlock); |
638 | |
752 | |
639 | errno = errorno; |
753 | errno = errorno; |
640 | return e ? 0 : -1; |
754 | return e ? 0 : -1; |
641 | } |
755 | } |
642 | #endif |
756 | #endif |
643 | |
757 | |
644 | /* sendfile always needs emulation */ |
758 | /* sendfile always needs emulation */ |
645 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
759 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) |
646 | { |
760 | { |
647 | ssize_t res; |
761 | ssize_t res; |
648 | |
762 | |
649 | if (!count) |
763 | if (!count) |
650 | return 0; |
764 | return 0; |
… | |
… | |
699 | #endif |
813 | #endif |
700 | ) |
814 | ) |
701 | ) |
815 | ) |
702 | { |
816 | { |
703 | /* emulate sendfile. this is a major pain in the ass */ |
817 | /* emulate sendfile. this is a major pain in the ass */ |
704 | char buf[4096]; |
818 | dBUF; |
|
|
819 | |
705 | res = 0; |
820 | res = 0; |
706 | |
821 | |
707 | while (count) |
822 | while (count) |
708 | { |
823 | { |
709 | ssize_t cnt; |
824 | ssize_t cnt; |
710 | |
825 | |
711 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
826 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
712 | |
827 | |
713 | if (cnt <= 0) |
828 | if (cnt <= 0) |
714 | { |
829 | { |
715 | if (cnt && !res) res = -1; |
830 | if (cnt && !res) res = -1; |
716 | break; |
831 | break; |
717 | } |
832 | } |
718 | |
833 | |
719 | cnt = write (ofd, buf, cnt); |
834 | cnt = write (ofd, aio_buf, cnt); |
720 | |
835 | |
721 | if (cnt <= 0) |
836 | if (cnt <= 0) |
722 | { |
837 | { |
723 | if (cnt && !res) res = -1; |
838 | if (cnt && !res) res = -1; |
724 | break; |
839 | break; |
… | |
… | |
732 | |
847 | |
733 | return res; |
848 | return res; |
734 | } |
849 | } |
735 | |
850 | |
736 | /* read a full directory */ |
851 | /* read a full directory */ |
737 | static int scandir_ (const char *path, void **namesp) |
852 | static void scandir_ (aio_req req, worker *self) |
738 | { |
853 | { |
739 | DIR *dirp = opendir (path); |
854 | DIR *dirp; |
740 | union |
855 | union |
741 | { |
856 | { |
742 | struct dirent d; |
857 | struct dirent d; |
743 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
858 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
744 | } u; |
859 | } *u; |
745 | struct dirent *entp; |
860 | struct dirent *entp; |
746 | char *name, *names; |
861 | char *name, *names; |
747 | int memlen = 4096; |
862 | int memlen = 4096; |
748 | int memofs = 0; |
863 | int memofs = 0; |
749 | int res = 0; |
864 | int res = 0; |
750 | int errorno; |
865 | int errorno; |
751 | |
866 | |
752 | if (!dirp) |
867 | LOCK (wrklock); |
753 | return -1; |
868 | self->dirp = dirp = opendir (req->dataptr); |
|
|
869 | self->dbuf = u = malloc (sizeof (*u)); |
|
|
870 | UNLOCK (wrklock); |
754 | |
871 | |
755 | names = malloc (memlen); |
872 | req->data2ptr = names = malloc (memlen); |
756 | |
873 | |
|
|
874 | if (dirp && u && names) |
757 | for (;;) |
875 | for (;;) |
758 | { |
876 | { |
|
|
877 | errno = 0; |
759 | errno = 0, readdir_r (dirp, &u.d, &entp); |
878 | readdir_r (dirp, &u->d, &entp); |
760 | |
879 | |
761 | if (!entp) |
880 | if (!entp) |
762 | break; |
881 | break; |
763 | |
882 | |
764 | name = entp->d_name; |
883 | name = entp->d_name; |
765 | |
884 | |
766 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
885 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
767 | { |
886 | { |
768 | int len = strlen (name) + 1; |
887 | int len = strlen (name) + 1; |
769 | |
888 | |
770 | res++; |
889 | res++; |
771 | |
890 | |
772 | while (memofs + len > memlen) |
891 | while (memofs + len > memlen) |
773 | { |
892 | { |
774 | memlen *= 2; |
893 | memlen *= 2; |
|
|
894 | LOCK (wrklock); |
775 | names = realloc (names, memlen); |
895 | req->data2ptr = names = realloc (names, memlen); |
|
|
896 | UNLOCK (wrklock); |
|
|
897 | |
776 | if (!names) |
898 | if (!names) |
777 | break; |
899 | break; |
778 | } |
900 | } |
779 | |
901 | |
780 | memcpy (names + memofs, name, len); |
902 | memcpy (names + memofs, name, len); |
781 | memofs += len; |
903 | memofs += len; |
782 | } |
904 | } |
783 | } |
905 | } |
784 | |
906 | |
785 | errorno = errno; |
|
|
786 | closedir (dirp); |
|
|
787 | |
|
|
788 | if (errorno) |
907 | if (errno) |
789 | { |
|
|
790 | free (names); |
|
|
791 | errno = errorno; |
|
|
792 | res = -1; |
908 | res = -1; |
793 | } |
909 | |
794 | |
910 | req->result = res; |
795 | *namesp = (void *)names; |
|
|
796 | return res; |
|
|
797 | } |
911 | } |
798 | |
912 | |
799 | /*****************************************************************************/ |
913 | /*****************************************************************************/ |
800 | |
914 | |
801 | static void *aio_proc (void *thr_arg) |
915 | static void *aio_proc (void *thr_arg) |
802 | { |
916 | { |
803 | aio_req req; |
917 | aio_req req; |
804 | int type; |
918 | int type; |
|
|
919 | worker *self = (worker *)thr_arg; |
805 | |
920 | |
806 | do |
921 | do |
807 | { |
922 | { |
808 | pthread_mutex_lock (&reqlock); |
923 | LOCK (reqlock); |
809 | |
924 | |
810 | for (;;) |
925 | for (;;) |
811 | { |
926 | { |
812 | req = reqs; |
927 | self->req = req = reqq_shift (&req_queue); |
813 | |
|
|
814 | if (reqs) |
|
|
815 | { |
|
|
816 | reqs = reqs->next; |
|
|
817 | if (!reqs) reqe = 0; |
|
|
818 | } |
|
|
819 | |
928 | |
820 | if (req) |
929 | if (req) |
821 | break; |
930 | break; |
822 | |
931 | |
823 | pthread_cond_wait (&reqwait, &reqlock); |
932 | pthread_cond_wait (&reqwait, &reqlock); |
824 | } |
933 | } |
825 | |
934 | |
826 | pthread_mutex_unlock (&reqlock); |
935 | UNLOCK (reqlock); |
827 | |
936 | |
828 | errno = 0; /* strictly unnecessary */ |
937 | errno = 0; /* strictly unnecessary */ |
829 | type = req->type; /* remember type for QUIT check */ |
938 | type = req->type; /* remember type for QUIT check */ |
830 | |
939 | |
831 | if (!(req->flags & FLAG_CANCELLED)) |
940 | if (!(req->flags & FLAG_CANCELLED)) |
… | |
… | |
833 | { |
942 | { |
834 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
943 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
835 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
944 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
836 | |
945 | |
837 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
946 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
838 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; |
947 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break; |
839 | |
948 | |
840 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
949 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
841 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
950 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
842 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
951 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
843 | |
952 | |
… | |
… | |
849 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
958 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
850 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
959 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
851 | |
960 | |
852 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
961 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
853 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
962 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
854 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
963 | case REQ_READDIR: scandir_ (req, self); break; |
855 | |
964 | |
856 | case REQ_SLEEP: |
965 | case REQ_BUSY: |
857 | { |
966 | { |
858 | struct timeval tv; |
967 | struct timeval tv; |
859 | |
968 | |
860 | tv.tv_sec = req->fd; |
969 | tv.tv_sec = req->fd; |
861 | tv.tv_usec = req->fd2; |
970 | tv.tv_usec = req->fd2; |
… | |
… | |
873 | break; |
982 | break; |
874 | } |
983 | } |
875 | |
984 | |
876 | req->errorno = errno; |
985 | req->errorno = errno; |
877 | |
986 | |
878 | pthread_mutex_lock (&reslock); |
987 | LOCK (reslock); |
879 | |
988 | |
880 | req->next = 0; |
989 | if (!reqq_push (&res_queue, req)) |
881 | |
|
|
882 | if (rese) |
|
|
883 | { |
|
|
884 | rese->next = req; |
|
|
885 | rese = req; |
|
|
886 | } |
|
|
887 | else |
|
|
888 | { |
|
|
889 | rese = ress = req; |
|
|
890 | |
|
|
891 | /* write a dummy byte to the pipe so fh becomes ready */ |
990 | /* write a dummy byte to the pipe so fh becomes ready */ |
892 | write (respipe [1], &respipe, 1); |
991 | write (respipe [1], &respipe, 1); |
893 | } |
|
|
894 | |
992 | |
895 | pthread_mutex_unlock (&reslock); |
993 | self->req = 0; |
|
|
994 | worker_clear (self); |
|
|
995 | |
|
|
996 | UNLOCK (reslock); |
896 | } |
997 | } |
897 | while (type != REQ_QUIT); |
998 | while (type != REQ_QUIT); |
898 | |
999 | |
|
|
1000 | LOCK (wrklock); |
|
|
1001 | worker_free (self); |
|
|
1002 | UNLOCK (wrklock); |
|
|
1003 | |
899 | return 0; |
1004 | return 0; |
900 | } |
1005 | } |
901 | |
1006 | |
902 | /*****************************************************************************/ |
1007 | /*****************************************************************************/ |
903 | |
1008 | |
904 | static void atfork_prepare (void) |
1009 | static void atfork_prepare (void) |
905 | { |
1010 | { |
906 | pthread_mutex_lock (&reqlock); |
1011 | LOCK (wrklock); |
907 | pthread_mutex_lock (&reslock); |
1012 | LOCK (reqlock); |
|
|
1013 | LOCK (reslock); |
908 | #if !HAVE_PREADWRITE |
1014 | #if !HAVE_PREADWRITE |
909 | pthread_mutex_lock (&preadwritelock); |
1015 | LOCK (preadwritelock); |
910 | #endif |
1016 | #endif |
911 | #if !HAVE_READDIR_R |
1017 | #if !HAVE_READDIR_R |
912 | pthread_mutex_lock (&readdirlock); |
1018 | LOCK (readdirlock); |
913 | #endif |
1019 | #endif |
914 | } |
1020 | } |
915 | |
1021 | |
916 | static void atfork_parent (void) |
1022 | static void atfork_parent (void) |
917 | { |
1023 | { |
918 | #if !HAVE_READDIR_R |
1024 | #if !HAVE_READDIR_R |
919 | pthread_mutex_unlock (&readdirlock); |
1025 | UNLOCK (readdirlock); |
920 | #endif |
1026 | #endif |
921 | #if !HAVE_PREADWRITE |
1027 | #if !HAVE_PREADWRITE |
922 | pthread_mutex_unlock (&preadwritelock); |
1028 | UNLOCK (preadwritelock); |
923 | #endif |
1029 | #endif |
924 | pthread_mutex_unlock (&reslock); |
1030 | UNLOCK (reslock); |
925 | pthread_mutex_unlock (&reqlock); |
1031 | UNLOCK (reqlock); |
|
|
1032 | UNLOCK (wrklock); |
926 | } |
1033 | } |
927 | |
1034 | |
928 | static void atfork_child (void) |
1035 | static void atfork_child (void) |
929 | { |
1036 | { |
930 | aio_req prv; |
1037 | aio_req prv; |
931 | |
1038 | |
|
|
1039 | while (prv = reqq_shift (&req_queue)) |
|
|
1040 | req_free (prv); |
|
|
1041 | |
|
|
1042 | while (prv = reqq_shift (&res_queue)) |
|
|
1043 | req_free (prv); |
|
|
1044 | |
|
|
1045 | while (wrk_first.next != &wrk_first) |
|
|
1046 | { |
|
|
1047 | worker *wrk = wrk_first.next; |
|
|
1048 | |
|
|
1049 | if (wrk->req) |
|
|
1050 | req_free (wrk->req); |
|
|
1051 | |
|
|
1052 | worker_clear (wrk); |
|
|
1053 | worker_free (wrk); |
|
|
1054 | } |
|
|
1055 | |
932 | started = 0; |
1056 | started = 0; |
933 | |
1057 | nreqs = 0; |
934 | while (reqs) |
|
|
935 | { |
|
|
936 | prv = reqs; |
|
|
937 | reqs = prv->next; |
|
|
938 | req_free (prv); |
|
|
939 | } |
|
|
940 | |
|
|
941 | reqs = reqe = 0; |
|
|
942 | |
|
|
943 | while (ress) |
|
|
944 | { |
|
|
945 | prv = ress; |
|
|
946 | ress = prv->next; |
|
|
947 | req_free (prv); |
|
|
948 | } |
|
|
949 | |
|
|
950 | ress = rese = 0; |
|
|
951 | |
1058 | |
952 | close (respipe [0]); |
1059 | close (respipe [0]); |
953 | close (respipe [1]); |
1060 | close (respipe [1]); |
954 | create_pipe (); |
1061 | create_pipe (); |
955 | |
1062 | |
… | |
… | |
1231 | |
1338 | |
1232 | REQ_SEND; |
1339 | REQ_SEND; |
1233 | } |
1340 | } |
1234 | |
1341 | |
1235 | void |
1342 | void |
1236 | aio_sleep (delay,callback=&PL_sv_undef) |
1343 | aio_busy (delay,callback=&PL_sv_undef) |
1237 | double delay |
1344 | double delay |
1238 | SV * callback |
1345 | SV * callback |
1239 | PPCODE: |
1346 | PPCODE: |
1240 | { |
1347 | { |
1241 | dREQ; |
1348 | dREQ; |
1242 | |
1349 | |
1243 | req->type = REQ_SLEEP; |
1350 | req->type = REQ_BUSY; |
1244 | req->fd = delay < 0. ? 0 : delay; |
1351 | req->fd = delay < 0. ? 0 : delay; |
1245 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1352 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1246 | |
1353 | |
1247 | REQ_SEND; |
1354 | REQ_SEND; |
1248 | } |
1355 | } |
… | |
… | |
1271 | req->type = REQ_NOP; |
1378 | req->type = REQ_NOP; |
1272 | |
1379 | |
1273 | REQ_SEND; |
1380 | REQ_SEND; |
1274 | } |
1381 | } |
1275 | |
1382 | |
1276 | #if 0 |
|
|
1277 | |
|
|
1278 | void |
1383 | void |
1279 | aio_pri (int pri = DEFAULT_PRI) |
1384 | aioreq_pri (int pri = DEFAULT_PRI) |
1280 | CODE: |
1385 | CODE: |
1281 | if (pri < PRI_MIN) pri = PRI_MIN; |
1386 | if (pri < PRI_MIN) pri = PRI_MIN; |
1282 | if (pri > PRI_MAX) pri = PRI_MAX; |
1387 | if (pri > PRI_MAX) pri = PRI_MAX; |
1283 | next_pri = pri + PRI_BIAS; |
1388 | next_pri = pri + PRI_BIAS; |
1284 | |
1389 | |
1285 | #endif |
1390 | void |
|
|
1391 | aioreq_nice (int nice = 0) |
|
|
1392 | CODE: |
|
|
1393 | nice = next_pri - nice; |
|
|
1394 | if (nice < PRI_MIN) nice = PRI_MIN; |
|
|
1395 | if (nice > PRI_MAX) nice = PRI_MAX; |
|
|
1396 | next_pri = nice + PRI_BIAS; |
1286 | |
1397 | |
1287 | void |
1398 | void |
1288 | flush () |
1399 | flush () |
1289 | PROTOTYPE: |
1400 | PROTOTYPE: |
1290 | CODE: |
1401 | CODE: |
… | |
… | |
1339 | |
1450 | |
1340 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1451 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1341 | |
1452 | |
1342 | void |
1453 | void |
1343 | cancel (aio_req_ornot req) |
1454 | cancel (aio_req_ornot req) |
1344 | PROTOTYPE: |
|
|
1345 | CODE: |
1455 | CODE: |
1346 | req_cancel (req); |
1456 | req_cancel (req); |
1347 | |
1457 | |
1348 | void |
1458 | void |
1349 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
1459 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
… | |
… | |
1399 | SvREFCNT_dec (grp->data); |
1509 | SvREFCNT_dec (grp->data); |
1400 | grp->data = (SV *)av; |
1510 | grp->data = (SV *)av; |
1401 | } |
1511 | } |
1402 | |
1512 | |
1403 | void |
1513 | void |
1404 | feed_limit (aio_req grp, int limit) |
1514 | limit (aio_req grp, int limit) |
1405 | CODE: |
1515 | CODE: |
1406 | grp->fd2 = limit; |
1516 | grp->fd2 = limit; |
1407 | aio_grp_feed (grp); |
1517 | aio_grp_feed (grp); |
1408 | |
1518 | |
1409 | void |
1519 | void |