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1 | /* solaris */ |
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2 | #define _POSIX_PTHREAD_SEMANTICS 1 |
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3 | |
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4 | #if __linux && !defined(_GNU_SOURCE) |
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5 | # define _GNU_SOURCE |
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6 | #endif |
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7 | |
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8 | /* just in case */ |
1 | #define _REENTRANT 1 |
9 | #define _REENTRANT 1 |
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10 | |
2 | #include <errno.h> |
11 | #include <errno.h> |
3 | |
12 | |
4 | #include "EXTERN.h" |
13 | #include "EXTERN.h" |
5 | #include "perl.h" |
14 | #include "perl.h" |
6 | #include "XSUB.h" |
15 | #include "XSUB.h" |
… | |
… | |
34 | # else |
43 | # else |
35 | # error sendfile support requested but not available |
44 | # error sendfile support requested but not available |
36 | # endif |
45 | # endif |
37 | #endif |
46 | #endif |
38 | |
47 | |
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48 | /* number of seconds after which idle threads exit */ |
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49 | #define IDLE_TIMEOUT 10 |
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50 | |
39 | /* used for struct dirent, AIX doesn't provide it */ |
51 | /* used for struct dirent, AIX doesn't provide it */ |
40 | #ifndef NAME_MAX |
52 | #ifndef NAME_MAX |
41 | # define NAME_MAX 4096 |
53 | # define NAME_MAX 4096 |
42 | #endif |
54 | #endif |
43 | |
55 | |
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56 | #ifndef PTHREAD_STACK_MIN |
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57 | /* care for broken platforms, e.g. windows */ |
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58 | # define PTHREAD_STACK_MIN 16384 |
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59 | #endif |
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60 | |
44 | #if __ia64 |
61 | #if __ia64 |
45 | # define STACKSIZE 65536 |
62 | # define STACKSIZE 65536 |
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63 | #elif __i386 || __x86_64 /* 16k is unreasonably high :( */ |
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64 | # define STACKSIZE PTHREAD_STACK_MIN |
46 | #else |
65 | #else |
47 | # define STACKSIZE 8192 |
66 | # define STACKSIZE 16384 |
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67 | #endif |
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68 | |
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69 | /* wether word reads are potentially non-atomic. |
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70 | * this is conservatice, likely most arches this runs |
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71 | * on have atomic word read/writes. |
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72 | */ |
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73 | #ifndef WORDACCESS_UNSAFE |
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74 | # if __i386 || __x86_64 |
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75 | # define WORDACCESS_UNSAFE 0 |
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76 | # else |
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77 | # define WORDACCESS_UNSAFE 1 |
48 | #endif |
78 | # endif |
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79 | #endif |
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80 | |
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81 | /* buffer size for various temporary buffers */ |
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82 | #define AIO_BUFSIZE 65536 |
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83 | |
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84 | #define dBUF \ |
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85 | char *aio_buf; \ |
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86 | LOCK (wrklock); \ |
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87 | self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ |
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88 | UNLOCK (wrklock); \ |
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89 | if (!aio_buf) \ |
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90 | return -1; |
49 | |
91 | |
50 | enum { |
92 | enum { |
51 | REQ_QUIT, |
93 | REQ_QUIT, |
52 | REQ_OPEN, REQ_CLOSE, |
94 | REQ_OPEN, REQ_CLOSE, |
53 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
95 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
54 | REQ_SENDFILE, |
96 | REQ_SENDFILE, |
55 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
97 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
56 | REQ_FSYNC, REQ_FDATASYNC, |
98 | REQ_FSYNC, REQ_FDATASYNC, |
57 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
99 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
58 | REQ_READDIR, |
100 | REQ_MKNOD, REQ_READDIR, |
59 | REQ_LINK, REQ_SYMLINK, |
101 | REQ_LINK, REQ_SYMLINK, |
60 | REQ_GROUP, REQ_NOP, |
102 | REQ_GROUP, REQ_NOP, |
61 | REQ_SLEEP, |
103 | REQ_BUSY, |
62 | }; |
104 | }; |
63 | |
105 | |
64 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
106 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
65 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
107 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
66 | |
108 | |
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100 | PRI_MIN = -4, |
142 | PRI_MIN = -4, |
101 | PRI_MAX = 4, |
143 | PRI_MAX = 4, |
102 | |
144 | |
103 | DEFAULT_PRI = 0, |
145 | DEFAULT_PRI = 0, |
104 | PRI_BIAS = -PRI_MIN, |
146 | PRI_BIAS = -PRI_MIN, |
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147 | NUM_PRI = PRI_MAX + PRI_BIAS + 1, |
105 | }; |
148 | }; |
106 | |
149 | |
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150 | #define AIO_TICKS ((1000000 + 1023) >> 10) |
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151 | |
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152 | static unsigned int max_poll_time = 0; |
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153 | static unsigned int max_poll_reqs = 0; |
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154 | |
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155 | /* calculcate time difference in ~1/AIO_TICKS of a second */ |
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156 | static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
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157 | { |
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158 | return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS |
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159 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
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160 | } |
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161 | |
107 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
162 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
108 | |
163 | |
109 | static int started, wanted; |
164 | static unsigned int started, idle, wanted; |
110 | static volatile int nreqs; |
165 | |
111 | static int max_outstanding = 1<<30; |
166 | #if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
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167 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
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168 | #else |
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169 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
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170 | #endif |
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171 | |
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172 | #define LOCK(mutex) pthread_mutex_lock (&(mutex)) |
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173 | #define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) |
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174 | |
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175 | /* worker threads management */ |
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176 | static pthread_mutex_t wrklock = AIO_MUTEX_INIT; |
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177 | |
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178 | typedef struct worker { |
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179 | /* locked by wrklock */ |
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180 | struct worker *prev, *next; |
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181 | |
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182 | pthread_t tid; |
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183 | |
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184 | /* locked by reslock, reqlock or wrklock */ |
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185 | aio_req req; /* currently processed request */ |
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186 | void *dbuf; |
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187 | DIR *dirp; |
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188 | } worker; |
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189 | |
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190 | static worker wrk_first = { &wrk_first, &wrk_first, 0 }; |
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191 | |
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192 | static void worker_clear (worker *wrk) |
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193 | { |
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194 | if (wrk->dirp) |
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195 | { |
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196 | closedir (wrk->dirp); |
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197 | wrk->dirp = 0; |
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198 | } |
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199 | |
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200 | if (wrk->dbuf) |
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201 | { |
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202 | free (wrk->dbuf); |
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203 | wrk->dbuf = 0; |
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204 | } |
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205 | } |
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206 | |
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207 | static void worker_free (worker *wrk) |
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208 | { |
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209 | wrk->next->prev = wrk->prev; |
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210 | wrk->prev->next = wrk->next; |
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211 | |
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212 | free (wrk); |
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213 | } |
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214 | |
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215 | static volatile unsigned int nreqs, nready, npending; |
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216 | static volatile unsigned int max_idle = 4; |
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217 | static volatile unsigned int max_outstanding = 0xffffffff; |
112 | static int respipe [2]; |
218 | static int respipe [2]; |
113 | |
219 | |
114 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
220 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
115 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
221 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
116 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
222 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
117 | |
223 | |
118 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
224 | #if WORDACCESS_UNSAFE |
119 | static volatile aio_req ress, rese; /* queue start, queue end */ |
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120 | |
225 | |
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226 | static unsigned int get_nready () |
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227 | { |
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228 | unsigned int retval; |
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229 | |
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230 | LOCK (reqlock); |
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231 | retval = nready; |
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232 | UNLOCK (reqlock); |
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233 | |
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234 | return retval; |
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235 | } |
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236 | |
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237 | static unsigned int get_npending () |
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238 | { |
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239 | unsigned int retval; |
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240 | |
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241 | LOCK (reslock); |
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242 | retval = npending; |
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243 | UNLOCK (reslock); |
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244 | |
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245 | return retval; |
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246 | } |
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247 | |
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248 | static unsigned int get_nthreads () |
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249 | { |
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250 | unsigned int retval; |
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251 | |
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252 | LOCK (wrklock); |
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253 | retval = started; |
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254 | UNLOCK (wrklock); |
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255 | |
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256 | return retval; |
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257 | } |
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258 | |
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259 | #else |
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260 | |
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261 | # define get_nready() nready |
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262 | # define get_npending() npending |
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263 | # define get_nthreads() started |
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264 | |
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265 | #endif |
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266 | |
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267 | /* |
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268 | * a somewhat faster data structure might be nice, but |
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269 | * with 8 priorities this actually needs <20 insns |
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270 | * per shift, the most expensive operation. |
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271 | */ |
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272 | typedef struct { |
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273 | aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */ |
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274 | int size; |
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275 | } reqq; |
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276 | |
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277 | static reqq req_queue; |
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278 | static reqq res_queue; |
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279 | |
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280 | int reqq_push (reqq *q, aio_req req) |
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281 | { |
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282 | int pri = req->pri; |
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283 | req->next = 0; |
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284 | |
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285 | if (q->qe[pri]) |
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286 | { |
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287 | q->qe[pri]->next = req; |
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288 | q->qe[pri] = req; |
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289 | } |
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290 | else |
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291 | q->qe[pri] = q->qs[pri] = req; |
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292 | |
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293 | return q->size++; |
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294 | } |
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295 | |
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296 | aio_req reqq_shift (reqq *q) |
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297 | { |
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298 | int pri; |
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299 | |
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300 | if (!q->size) |
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301 | return 0; |
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302 | |
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303 | --q->size; |
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304 | |
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305 | for (pri = NUM_PRI; pri--; ) |
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306 | { |
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307 | aio_req req = q->qs[pri]; |
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308 | |
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309 | if (req) |
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310 | { |
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311 | if (!(q->qs[pri] = req->next)) |
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312 | q->qe[pri] = 0; |
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313 | |
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314 | return req; |
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315 | } |
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316 | } |
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317 | |
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318 | abort (); |
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319 | } |
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320 | |
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321 | static int poll_cb (); |
121 | static void req_invoke (aio_req req); |
322 | static void req_invoke (aio_req req); |
122 | static void req_free (aio_req req); |
323 | static void req_free (aio_req req); |
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324 | static void req_cancel (aio_req req); |
123 | |
325 | |
124 | /* must be called at most once */ |
326 | /* must be called at most once */ |
125 | static SV *req_sv (aio_req req, const char *klass) |
327 | static SV *req_sv (aio_req req, const char *klass) |
126 | { |
328 | { |
127 | if (!req->self) |
329 | if (!req->self) |
… | |
… | |
158 | ENTER; |
360 | ENTER; |
159 | SAVETMPS; |
361 | SAVETMPS; |
160 | PUSHMARK (SP); |
362 | PUSHMARK (SP); |
161 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
363 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
162 | PUTBACK; |
364 | PUTBACK; |
163 | call_sv (grp->fh2, G_VOID | G_EVAL); |
365 | call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); |
164 | SPAGAIN; |
366 | SPAGAIN; |
165 | FREETMPS; |
367 | FREETMPS; |
166 | LEAVE; |
368 | LEAVE; |
167 | } |
369 | } |
168 | |
370 | |
… | |
… | |
189 | req_invoke (grp); |
391 | req_invoke (grp); |
190 | req_free (grp); |
392 | req_free (grp); |
191 | } |
393 | } |
192 | } |
394 | } |
193 | |
395 | |
194 | static void poll_wait () |
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195 | { |
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196 | fd_set rfd; |
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197 | |
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198 | while (nreqs) |
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199 | { |
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200 | aio_req req; |
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201 | pthread_mutex_lock (&reslock); |
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202 | req = ress; |
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203 | pthread_mutex_unlock (&reslock); |
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204 | |
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205 | if (req) |
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206 | return; |
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207 | |
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208 | FD_ZERO(&rfd); |
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209 | FD_SET(respipe [0], &rfd); |
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210 | |
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211 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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212 | } |
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213 | } |
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214 | |
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215 | static void req_invoke (aio_req req) |
396 | static void req_invoke (aio_req req) |
216 | { |
397 | { |
217 | dSP; |
398 | dSP; |
218 | int errorno = errno; |
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219 | |
399 | |
220 | if (req->flags & FLAG_CANCELLED || !SvOK (req->callback)) |
400 | if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
221 | return; |
401 | { |
222 | |
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223 | errno = req->errorno; |
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224 | |
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225 | ENTER; |
402 | ENTER; |
226 | SAVETMPS; |
403 | SAVETMPS; |
227 | PUSHMARK (SP); |
404 | PUSHMARK (SP); |
228 | EXTEND (SP, 1); |
405 | EXTEND (SP, 1); |
229 | |
406 | |
230 | switch (req->type) |
407 | switch (req->type) |
231 | { |
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232 | case REQ_READDIR: |
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233 | { |
408 | { |
234 | SV *rv = &PL_sv_undef; |
409 | case REQ_READDIR: |
235 | |
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236 | if (req->result >= 0) |
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237 | { |
410 | { |
238 | char *buf = req->data2ptr; |
411 | SV *rv = &PL_sv_undef; |
239 | AV *av = newAV (); |
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240 | |
412 | |
241 | while (req->result) |
413 | if (req->result >= 0) |
242 | { |
414 | { |
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415 | int i; |
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416 | char *buf = req->data2ptr; |
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417 | AV *av = newAV (); |
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418 | |
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419 | av_extend (av, req->result - 1); |
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420 | |
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421 | for (i = 0; i < req->result; ++i) |
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422 | { |
243 | SV *sv = newSVpv (buf, 0); |
423 | SV *sv = newSVpv (buf, 0); |
244 | |
424 | |
245 | av_push (av, sv); |
425 | av_store (av, i, sv); |
246 | buf += SvCUR (sv) + 1; |
426 | buf += SvCUR (sv) + 1; |
247 | req->result--; |
427 | } |
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428 | |
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429 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
248 | } |
430 | } |
249 | |
431 | |
250 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
432 | PUSHs (rv); |
251 | } |
433 | } |
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434 | break; |
252 | |
435 | |
253 | PUSHs (rv); |
436 | case REQ_OPEN: |
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437 | { |
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438 | /* convert fd to fh */ |
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439 | SV *fh; |
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440 | |
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441 | PUSHs (sv_2mortal (newSViv (req->result))); |
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442 | PUTBACK; |
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443 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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444 | SPAGAIN; |
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445 | |
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446 | fh = SvREFCNT_inc (POPs); |
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447 | |
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448 | PUSHMARK (SP); |
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449 | XPUSHs (sv_2mortal (fh)); |
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450 | } |
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451 | break; |
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452 | |
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453 | case REQ_GROUP: |
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454 | req->fd = 2; /* mark group as finished */ |
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455 | |
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456 | if (req->data) |
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457 | { |
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458 | int i; |
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459 | AV *av = (AV *)req->data; |
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460 | |
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461 | EXTEND (SP, AvFILL (av) + 1); |
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462 | for (i = 0; i <= AvFILL (av); ++i) |
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463 | PUSHs (*av_fetch (av, i, 0)); |
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464 | } |
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465 | break; |
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466 | |
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467 | case REQ_NOP: |
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468 | case REQ_BUSY: |
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469 | break; |
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470 | |
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471 | default: |
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472 | PUSHs (sv_2mortal (newSViv (req->result))); |
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473 | break; |
254 | } |
474 | } |
255 | break; |
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256 | |
475 | |
257 | case REQ_OPEN: |
476 | errno = req->errorno; |
258 | { |
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259 | /* convert fd to fh */ |
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260 | SV *fh; |
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261 | |
477 | |
262 | PUSHs (sv_2mortal (newSViv (req->result))); |
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263 | PUTBACK; |
478 | PUTBACK; |
264 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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265 | SPAGAIN; |
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266 | |
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267 | fh = SvREFCNT_inc (POPs); |
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268 | |
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269 | PUSHMARK (SP); |
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270 | XPUSHs (sv_2mortal (fh)); |
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271 | } |
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272 | break; |
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273 | |
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274 | case REQ_GROUP: |
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275 | req->fd = 2; /* mark group as finished */ |
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276 | |
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277 | if (req->data) |
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278 | { |
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279 | int i; |
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280 | AV *av = (AV *)req->data; |
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281 | |
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282 | EXTEND (SP, AvFILL (av) + 1); |
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283 | for (i = 0; i <= AvFILL (av); ++i) |
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284 | PUSHs (*av_fetch (av, i, 0)); |
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285 | } |
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286 | break; |
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287 | |
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288 | case REQ_NOP: |
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289 | case REQ_SLEEP: |
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290 | break; |
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291 | |
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292 | default: |
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293 | PUSHs (sv_2mortal (newSViv (req->result))); |
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294 | break; |
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295 | } |
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296 | |
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297 | |
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298 | PUTBACK; |
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299 | call_sv (req->callback, G_VOID | G_EVAL); |
479 | call_sv (req->callback, G_VOID | G_EVAL); |
300 | SPAGAIN; |
480 | SPAGAIN; |
301 | |
481 | |
302 | FREETMPS; |
482 | FREETMPS; |
303 | LEAVE; |
483 | LEAVE; |
304 | |
|
|
305 | errno = errorno; |
|
|
306 | |
|
|
307 | if (SvTRUE (ERRSV)) |
|
|
308 | { |
484 | } |
309 | req_free (req); |
|
|
310 | croak (0); |
|
|
311 | } |
|
|
312 | } |
|
|
313 | |
485 | |
314 | static void req_free (aio_req req) |
|
|
315 | { |
|
|
316 | if (req->grp) |
486 | if (req->grp) |
317 | { |
487 | { |
318 | aio_req grp = req->grp; |
488 | aio_req grp = req->grp; |
319 | |
489 | |
320 | /* unlink request */ |
490 | /* unlink request */ |
… | |
… | |
325 | grp->grp_first = req->grp_next; |
495 | grp->grp_first = req->grp_next; |
326 | |
496 | |
327 | aio_grp_dec (grp); |
497 | aio_grp_dec (grp); |
328 | } |
498 | } |
329 | |
499 | |
|
|
500 | if (SvTRUE (ERRSV)) |
|
|
501 | { |
|
|
502 | req_free (req); |
|
|
503 | croak (0); |
|
|
504 | } |
|
|
505 | } |
|
|
506 | |
|
|
507 | static void req_free (aio_req req) |
|
|
508 | { |
330 | if (req->self) |
509 | if (req->self) |
331 | { |
510 | { |
332 | sv_unmagic (req->self, PERL_MAGIC_ext); |
511 | sv_unmagic (req->self, PERL_MAGIC_ext); |
333 | SvREFCNT_dec (req->self); |
512 | SvREFCNT_dec (req->self); |
334 | } |
513 | } |
… | |
… | |
337 | SvREFCNT_dec (req->fh); |
516 | SvREFCNT_dec (req->fh); |
338 | SvREFCNT_dec (req->fh2); |
517 | SvREFCNT_dec (req->fh2); |
339 | SvREFCNT_dec (req->callback); |
518 | SvREFCNT_dec (req->callback); |
340 | Safefree (req->statdata); |
519 | Safefree (req->statdata); |
341 | |
520 | |
342 | if (req->type == REQ_READDIR && req->result >= 0) |
521 | if (req->type == REQ_READDIR) |
343 | free (req->data2ptr); |
522 | free (req->data2ptr); |
344 | |
523 | |
345 | Safefree (req); |
524 | Safefree (req); |
346 | } |
525 | } |
347 | |
526 | |
|
|
527 | static void req_cancel_subs (aio_req grp) |
|
|
528 | { |
|
|
529 | aio_req sub; |
|
|
530 | |
|
|
531 | if (grp->type != REQ_GROUP) |
|
|
532 | return; |
|
|
533 | |
|
|
534 | SvREFCNT_dec (grp->fh2); |
|
|
535 | grp->fh2 = 0; |
|
|
536 | |
|
|
537 | for (sub = grp->grp_first; sub; sub = sub->grp_next) |
|
|
538 | req_cancel (sub); |
|
|
539 | } |
|
|
540 | |
348 | static void req_cancel (aio_req req) |
541 | static void req_cancel (aio_req req) |
349 | { |
542 | { |
350 | req->flags |= FLAG_CANCELLED; |
543 | req->flags |= FLAG_CANCELLED; |
351 | |
544 | |
352 | if (req->type == REQ_GROUP) |
545 | req_cancel_subs (req); |
353 | { |
|
|
354 | aio_req sub; |
|
|
355 | |
|
|
356 | for (sub = req->grp_first; sub; sub = sub->grp_next) |
|
|
357 | req_cancel (sub); |
|
|
358 | } |
|
|
359 | } |
|
|
360 | |
|
|
361 | static int poll_cb () |
|
|
362 | { |
|
|
363 | dSP; |
|
|
364 | int count = 0; |
|
|
365 | int do_croak = 0; |
|
|
366 | aio_req req; |
|
|
367 | |
|
|
368 | for (;;) |
|
|
369 | { |
|
|
370 | pthread_mutex_lock (&reslock); |
|
|
371 | req = ress; |
|
|
372 | |
|
|
373 | if (req) |
|
|
374 | { |
|
|
375 | ress = req->next; |
|
|
376 | |
|
|
377 | if (!ress) |
|
|
378 | { |
|
|
379 | /* read any signals sent by the worker threads */ |
|
|
380 | char buf [32]; |
|
|
381 | while (read (respipe [0], buf, 32) == 32) |
|
|
382 | ; |
|
|
383 | |
|
|
384 | rese = 0; |
|
|
385 | } |
|
|
386 | } |
|
|
387 | |
|
|
388 | pthread_mutex_unlock (&reslock); |
|
|
389 | |
|
|
390 | if (!req) |
|
|
391 | break; |
|
|
392 | |
|
|
393 | --nreqs; |
|
|
394 | |
|
|
395 | if (req->type == REQ_QUIT) |
|
|
396 | started--; |
|
|
397 | else if (req->type == REQ_GROUP && req->length) |
|
|
398 | { |
|
|
399 | req->fd = 1; /* mark request as delayed */ |
|
|
400 | continue; |
|
|
401 | } |
|
|
402 | else |
|
|
403 | { |
|
|
404 | if (req->type == REQ_READ) |
|
|
405 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
|
|
406 | |
|
|
407 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
|
|
408 | SvREADONLY_off (req->data); |
|
|
409 | |
|
|
410 | if (req->statdata) |
|
|
411 | { |
|
|
412 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
|
|
413 | PL_laststatval = req->result; |
|
|
414 | PL_statcache = *(req->statdata); |
|
|
415 | } |
|
|
416 | |
|
|
417 | req_invoke (req); |
|
|
418 | |
|
|
419 | count++; |
|
|
420 | } |
|
|
421 | |
|
|
422 | req_free (req); |
|
|
423 | } |
|
|
424 | |
|
|
425 | return count; |
|
|
426 | } |
546 | } |
427 | |
547 | |
428 | static void *aio_proc(void *arg); |
548 | static void *aio_proc(void *arg); |
429 | |
549 | |
430 | static void start_thread (void) |
550 | static void start_thread (void) |
431 | { |
551 | { |
432 | sigset_t fullsigset, oldsigset; |
552 | sigset_t fullsigset, oldsigset; |
433 | pthread_t tid; |
|
|
434 | pthread_attr_t attr; |
553 | pthread_attr_t attr; |
|
|
554 | |
|
|
555 | worker *wrk = calloc (1, sizeof (worker)); |
|
|
556 | |
|
|
557 | if (!wrk) |
|
|
558 | croak ("unable to allocate worker thread data"); |
435 | |
559 | |
436 | pthread_attr_init (&attr); |
560 | pthread_attr_init (&attr); |
437 | pthread_attr_setstacksize (&attr, STACKSIZE); |
561 | pthread_attr_setstacksize (&attr, STACKSIZE); |
438 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
562 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
|
|
563 | #ifdef PTHREAD_SCOPE_PROCESS |
|
|
564 | pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
|
|
565 | #endif |
439 | |
566 | |
440 | sigfillset (&fullsigset); |
567 | sigfillset (&fullsigset); |
|
|
568 | |
|
|
569 | LOCK (wrklock); |
441 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
570 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
442 | |
571 | |
443 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
572 | if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0) |
|
|
573 | { |
|
|
574 | wrk->prev = &wrk_first; |
|
|
575 | wrk->next = wrk_first.next; |
|
|
576 | wrk_first.next->prev = wrk; |
|
|
577 | wrk_first.next = wrk; |
444 | started++; |
578 | ++started; |
|
|
579 | } |
|
|
580 | else |
|
|
581 | free (wrk); |
445 | |
582 | |
446 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
583 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
|
|
584 | UNLOCK (wrklock); |
|
|
585 | } |
|
|
586 | |
|
|
587 | static void maybe_start_thread () |
|
|
588 | { |
|
|
589 | if (get_nthreads () >= wanted) |
|
|
590 | return; |
|
|
591 | |
|
|
592 | /* todo: maybe use idle here, but might be less exact */ |
|
|
593 | if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs) |
|
|
594 | return; |
|
|
595 | |
|
|
596 | start_thread (); |
447 | } |
597 | } |
448 | |
598 | |
449 | static void req_send (aio_req req) |
599 | static void req_send (aio_req req) |
450 | { |
600 | { |
451 | while (started < wanted && nreqs >= started) |
|
|
452 | start_thread (); |
|
|
453 | |
|
|
454 | ++nreqs; |
601 | ++nreqs; |
455 | |
602 | |
456 | pthread_mutex_lock (&reqlock); |
603 | LOCK (reqlock); |
457 | |
604 | ++nready; |
458 | req->next = 0; |
605 | reqq_push (&req_queue, req); |
459 | |
|
|
460 | if (reqe) |
|
|
461 | { |
|
|
462 | reqe->next = req; |
|
|
463 | reqe = req; |
|
|
464 | } |
|
|
465 | else |
|
|
466 | reqe = reqs = req; |
|
|
467 | |
|
|
468 | pthread_cond_signal (&reqwait); |
606 | pthread_cond_signal (&reqwait); |
469 | pthread_mutex_unlock (&reqlock); |
607 | UNLOCK (reqlock); |
470 | |
608 | |
471 | if (nreqs > max_outstanding) |
609 | maybe_start_thread (); |
472 | for (;;) |
|
|
473 | { |
|
|
474 | poll_cb (); |
|
|
475 | |
|
|
476 | if (nreqs <= max_outstanding) |
|
|
477 | break; |
|
|
478 | |
|
|
479 | poll_wait (); |
|
|
480 | } |
|
|
481 | } |
610 | } |
482 | |
611 | |
483 | static void end_thread (void) |
612 | static void end_thread (void) |
484 | { |
613 | { |
485 | aio_req req; |
614 | aio_req req; |
|
|
615 | |
486 | Newz (0, req, 1, aio_cb); |
616 | Newz (0, req, 1, aio_cb); |
|
|
617 | |
487 | req->type = REQ_QUIT; |
618 | req->type = REQ_QUIT; |
|
|
619 | req->pri = PRI_MAX + PRI_BIAS; |
488 | |
620 | |
489 | req_send (req); |
621 | LOCK (reqlock); |
|
|
622 | reqq_push (&req_queue, req); |
|
|
623 | pthread_cond_signal (&reqwait); |
|
|
624 | UNLOCK (reqlock); |
|
|
625 | |
|
|
626 | LOCK (wrklock); |
|
|
627 | --started; |
|
|
628 | UNLOCK (wrklock); |
|
|
629 | } |
|
|
630 | |
|
|
631 | static void set_max_idle (int nthreads) |
|
|
632 | { |
|
|
633 | if (WORDACCESS_UNSAFE) LOCK (reqlock); |
|
|
634 | max_idle = nthreads <= 0 ? 1 : nthreads; |
|
|
635 | if (WORDACCESS_UNSAFE) UNLOCK (reqlock); |
490 | } |
636 | } |
491 | |
637 | |
492 | static void min_parallel (int nthreads) |
638 | static void min_parallel (int nthreads) |
493 | { |
639 | { |
494 | if (wanted < nthreads) |
640 | if (wanted < nthreads) |
495 | wanted = nthreads; |
641 | wanted = nthreads; |
496 | } |
642 | } |
497 | |
643 | |
498 | static void max_parallel (int nthreads) |
644 | static void max_parallel (int nthreads) |
499 | { |
645 | { |
500 | int cur = started; |
|
|
501 | |
|
|
502 | if (wanted > nthreads) |
646 | if (wanted > nthreads) |
503 | wanted = nthreads; |
647 | wanted = nthreads; |
504 | |
648 | |
505 | while (cur > wanted) |
|
|
506 | { |
|
|
507 | end_thread (); |
|
|
508 | cur--; |
|
|
509 | } |
|
|
510 | |
|
|
511 | while (started > wanted) |
649 | while (started > wanted) |
|
|
650 | end_thread (); |
|
|
651 | } |
|
|
652 | |
|
|
653 | static void poll_wait () |
|
|
654 | { |
|
|
655 | fd_set rfd; |
|
|
656 | |
|
|
657 | while (nreqs) |
|
|
658 | { |
|
|
659 | int size; |
|
|
660 | if (WORDACCESS_UNSAFE) LOCK (reslock); |
|
|
661 | size = res_queue.size; |
|
|
662 | if (WORDACCESS_UNSAFE) UNLOCK (reslock); |
|
|
663 | |
|
|
664 | if (size) |
|
|
665 | return; |
|
|
666 | |
|
|
667 | maybe_start_thread (); |
|
|
668 | |
|
|
669 | FD_ZERO(&rfd); |
|
|
670 | FD_SET(respipe [0], &rfd); |
|
|
671 | |
|
|
672 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
512 | { |
673 | } |
|
|
674 | } |
|
|
675 | |
|
|
676 | static int poll_cb () |
|
|
677 | { |
|
|
678 | dSP; |
|
|
679 | int count = 0; |
|
|
680 | int maxreqs = max_poll_reqs; |
|
|
681 | int do_croak = 0; |
|
|
682 | struct timeval tv_start, tv_now; |
|
|
683 | aio_req req; |
|
|
684 | |
|
|
685 | if (max_poll_time) |
|
|
686 | gettimeofday (&tv_start, 0); |
|
|
687 | |
|
|
688 | for (;;) |
|
|
689 | { |
|
|
690 | for (;;) |
|
|
691 | { |
|
|
692 | maybe_start_thread (); |
|
|
693 | |
|
|
694 | LOCK (reslock); |
|
|
695 | req = reqq_shift (&res_queue); |
|
|
696 | |
|
|
697 | if (req) |
|
|
698 | { |
|
|
699 | --npending; |
|
|
700 | |
|
|
701 | if (!res_queue.size) |
|
|
702 | { |
|
|
703 | /* read any signals sent by the worker threads */ |
|
|
704 | char buf [32]; |
|
|
705 | while (read (respipe [0], buf, 32) == 32) |
|
|
706 | ; |
|
|
707 | } |
|
|
708 | } |
|
|
709 | |
|
|
710 | UNLOCK (reslock); |
|
|
711 | |
|
|
712 | if (!req) |
|
|
713 | break; |
|
|
714 | |
|
|
715 | --nreqs; |
|
|
716 | |
|
|
717 | if (req->type == REQ_GROUP && req->length) |
|
|
718 | { |
|
|
719 | req->fd = 1; /* mark request as delayed */ |
|
|
720 | continue; |
|
|
721 | } |
|
|
722 | else |
|
|
723 | { |
|
|
724 | if (req->type == REQ_READ) |
|
|
725 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
|
|
726 | |
|
|
727 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
|
|
728 | SvREADONLY_off (req->data); |
|
|
729 | |
|
|
730 | if (req->statdata) |
|
|
731 | { |
|
|
732 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
|
|
733 | PL_laststatval = req->result; |
|
|
734 | PL_statcache = *(req->statdata); |
|
|
735 | } |
|
|
736 | |
|
|
737 | req_invoke (req); |
|
|
738 | |
|
|
739 | count++; |
|
|
740 | } |
|
|
741 | |
|
|
742 | req_free (req); |
|
|
743 | |
|
|
744 | if (maxreqs && !--maxreqs) |
|
|
745 | break; |
|
|
746 | |
|
|
747 | if (max_poll_time) |
|
|
748 | { |
|
|
749 | gettimeofday (&tv_now, 0); |
|
|
750 | |
|
|
751 | if (tvdiff (&tv_start, &tv_now) >= max_poll_time) |
|
|
752 | break; |
|
|
753 | } |
|
|
754 | } |
|
|
755 | |
|
|
756 | if (nreqs <= max_outstanding) |
|
|
757 | break; |
|
|
758 | |
513 | poll_wait (); |
759 | poll_wait (); |
514 | poll_cb (); |
760 | |
|
|
761 | ++maxreqs; |
515 | } |
762 | } |
|
|
763 | |
|
|
764 | return count; |
516 | } |
765 | } |
517 | |
766 | |
518 | static void create_pipe () |
767 | static void create_pipe () |
519 | { |
768 | { |
520 | if (pipe (respipe)) |
769 | if (pipe (respipe)) |
… | |
… | |
544 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
793 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
545 | { |
794 | { |
546 | ssize_t res; |
795 | ssize_t res; |
547 | off_t ooffset; |
796 | off_t ooffset; |
548 | |
797 | |
549 | pthread_mutex_lock (&preadwritelock); |
798 | LOCK (preadwritelock); |
550 | ooffset = lseek (fd, 0, SEEK_CUR); |
799 | ooffset = lseek (fd, 0, SEEK_CUR); |
551 | lseek (fd, offset, SEEK_SET); |
800 | lseek (fd, offset, SEEK_SET); |
552 | res = read (fd, buf, count); |
801 | res = read (fd, buf, count); |
553 | lseek (fd, ooffset, SEEK_SET); |
802 | lseek (fd, ooffset, SEEK_SET); |
554 | pthread_mutex_unlock (&preadwritelock); |
803 | UNLOCK (preadwritelock); |
555 | |
804 | |
556 | return res; |
805 | return res; |
557 | } |
806 | } |
558 | |
807 | |
559 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
808 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
560 | { |
809 | { |
561 | ssize_t res; |
810 | ssize_t res; |
562 | off_t ooffset; |
811 | off_t ooffset; |
563 | |
812 | |
564 | pthread_mutex_lock (&preadwritelock); |
813 | LOCK (preadwritelock); |
565 | ooffset = lseek (fd, 0, SEEK_CUR); |
814 | ooffset = lseek (fd, 0, SEEK_CUR); |
566 | lseek (fd, offset, SEEK_SET); |
815 | lseek (fd, offset, SEEK_SET); |
567 | res = write (fd, buf, count); |
816 | res = write (fd, buf, count); |
568 | lseek (fd, offset, SEEK_SET); |
817 | lseek (fd, offset, SEEK_SET); |
569 | pthread_mutex_unlock (&preadwritelock); |
818 | UNLOCK (preadwritelock); |
570 | |
819 | |
571 | return res; |
820 | return res; |
572 | } |
821 | } |
573 | #endif |
822 | #endif |
574 | |
823 | |
575 | #if !HAVE_FDATASYNC |
824 | #if !HAVE_FDATASYNC |
576 | # define fdatasync fsync |
825 | # define fdatasync fsync |
577 | #endif |
826 | #endif |
578 | |
827 | |
579 | #if !HAVE_READAHEAD |
828 | #if !HAVE_READAHEAD |
580 | # define readahead aio_readahead |
829 | # define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) |
581 | |
830 | |
582 | static ssize_t readahead (int fd, off_t offset, size_t count) |
831 | static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) |
583 | { |
832 | { |
584 | char readahead_buf[4096]; |
833 | dBUF; |
585 | |
834 | |
586 | while (count > 0) |
835 | while (count > 0) |
587 | { |
836 | { |
588 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
837 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
589 | |
838 | |
590 | pread (fd, readahead_buf, len, offset); |
839 | pread (fd, aio_buf, len, offset); |
591 | offset += len; |
840 | offset += len; |
592 | count -= len; |
841 | count -= len; |
593 | } |
842 | } |
594 | |
843 | |
595 | errno = 0; |
844 | errno = 0; |
596 | } |
845 | } |
|
|
846 | |
597 | #endif |
847 | #endif |
598 | |
848 | |
599 | #if !HAVE_READDIR_R |
849 | #if !HAVE_READDIR_R |
600 | # define readdir_r aio_readdir_r |
850 | # define readdir_r aio_readdir_r |
601 | |
851 | |
… | |
… | |
604 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
854 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
605 | { |
855 | { |
606 | struct dirent *e; |
856 | struct dirent *e; |
607 | int errorno; |
857 | int errorno; |
608 | |
858 | |
609 | pthread_mutex_lock (&readdirlock); |
859 | LOCK (readdirlock); |
610 | |
860 | |
611 | e = readdir (dirp); |
861 | e = readdir (dirp); |
612 | errorno = errno; |
862 | errorno = errno; |
613 | |
863 | |
614 | if (e) |
864 | if (e) |
… | |
… | |
617 | strcpy (ent->d_name, e->d_name); |
867 | strcpy (ent->d_name, e->d_name); |
618 | } |
868 | } |
619 | else |
869 | else |
620 | *res = 0; |
870 | *res = 0; |
621 | |
871 | |
622 | pthread_mutex_unlock (&readdirlock); |
872 | UNLOCK (readdirlock); |
623 | |
873 | |
624 | errno = errorno; |
874 | errno = errorno; |
625 | return e ? 0 : -1; |
875 | return e ? 0 : -1; |
626 | } |
876 | } |
627 | #endif |
877 | #endif |
628 | |
878 | |
629 | /* sendfile always needs emulation */ |
879 | /* sendfile always needs emulation */ |
630 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
880 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) |
631 | { |
881 | { |
632 | ssize_t res; |
882 | ssize_t res; |
633 | |
883 | |
634 | if (!count) |
884 | if (!count) |
635 | return 0; |
885 | return 0; |
… | |
… | |
646 | { |
896 | { |
647 | off_t sbytes; |
897 | off_t sbytes; |
648 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
898 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
649 | |
899 | |
650 | if (res < 0 && sbytes) |
900 | if (res < 0 && sbytes) |
651 | /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ |
901 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
652 | res = sbytes; |
902 | res = sbytes; |
653 | } |
903 | } |
654 | |
904 | |
655 | # elif __hpux |
905 | # elif __hpux |
656 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
906 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
… | |
… | |
684 | #endif |
934 | #endif |
685 | ) |
935 | ) |
686 | ) |
936 | ) |
687 | { |
937 | { |
688 | /* emulate sendfile. this is a major pain in the ass */ |
938 | /* emulate sendfile. this is a major pain in the ass */ |
689 | char buf[4096]; |
939 | dBUF; |
|
|
940 | |
690 | res = 0; |
941 | res = 0; |
691 | |
942 | |
692 | while (count) |
943 | while (count) |
693 | { |
944 | { |
694 | ssize_t cnt; |
945 | ssize_t cnt; |
695 | |
946 | |
696 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
947 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
697 | |
948 | |
698 | if (cnt <= 0) |
949 | if (cnt <= 0) |
699 | { |
950 | { |
700 | if (cnt && !res) res = -1; |
951 | if (cnt && !res) res = -1; |
701 | break; |
952 | break; |
702 | } |
953 | } |
703 | |
954 | |
704 | cnt = write (ofd, buf, cnt); |
955 | cnt = write (ofd, aio_buf, cnt); |
705 | |
956 | |
706 | if (cnt <= 0) |
957 | if (cnt <= 0) |
707 | { |
958 | { |
708 | if (cnt && !res) res = -1; |
959 | if (cnt && !res) res = -1; |
709 | break; |
960 | break; |
… | |
… | |
717 | |
968 | |
718 | return res; |
969 | return res; |
719 | } |
970 | } |
720 | |
971 | |
721 | /* read a full directory */ |
972 | /* read a full directory */ |
722 | static int scandir_ (const char *path, void **namesp) |
973 | static void scandir_ (aio_req req, worker *self) |
723 | { |
974 | { |
724 | DIR *dirp = opendir (path); |
975 | DIR *dirp; |
725 | union |
976 | union |
726 | { |
977 | { |
727 | struct dirent d; |
978 | struct dirent d; |
728 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
979 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
729 | } u; |
980 | } *u; |
730 | struct dirent *entp; |
981 | struct dirent *entp; |
731 | char *name, *names; |
982 | char *name, *names; |
732 | int memlen = 4096; |
983 | int memlen = 4096; |
733 | int memofs = 0; |
984 | int memofs = 0; |
734 | int res = 0; |
985 | int res = 0; |
735 | int errorno; |
986 | int errorno; |
736 | |
987 | |
737 | if (!dirp) |
988 | LOCK (wrklock); |
738 | return -1; |
989 | self->dirp = dirp = opendir (req->dataptr); |
739 | |
990 | self->dbuf = u = malloc (sizeof (*u)); |
740 | names = malloc (memlen); |
991 | req->data2ptr = names = malloc (memlen); |
|
|
992 | UNLOCK (wrklock); |
|
|
993 | |
|
|
994 | if (dirp && u && names) |
|
|
995 | for (;;) |
|
|
996 | { |
|
|
997 | errno = 0; |
|
|
998 | readdir_r (dirp, &u->d, &entp); |
|
|
999 | |
|
|
1000 | if (!entp) |
|
|
1001 | break; |
|
|
1002 | |
|
|
1003 | name = entp->d_name; |
|
|
1004 | |
|
|
1005 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
|
|
1006 | { |
|
|
1007 | int len = strlen (name) + 1; |
|
|
1008 | |
|
|
1009 | res++; |
|
|
1010 | |
|
|
1011 | while (memofs + len > memlen) |
|
|
1012 | { |
|
|
1013 | memlen *= 2; |
|
|
1014 | LOCK (wrklock); |
|
|
1015 | req->data2ptr = names = realloc (names, memlen); |
|
|
1016 | UNLOCK (wrklock); |
|
|
1017 | |
|
|
1018 | if (!names) |
|
|
1019 | break; |
|
|
1020 | } |
|
|
1021 | |
|
|
1022 | memcpy (names + memofs, name, len); |
|
|
1023 | memofs += len; |
|
|
1024 | } |
|
|
1025 | } |
|
|
1026 | |
|
|
1027 | if (errno) |
|
|
1028 | res = -1; |
|
|
1029 | |
|
|
1030 | req->result = res; |
|
|
1031 | } |
|
|
1032 | |
|
|
1033 | /*****************************************************************************/ |
|
|
1034 | |
|
|
1035 | static void *aio_proc (void *thr_arg) |
|
|
1036 | { |
|
|
1037 | aio_req req; |
|
|
1038 | struct timespec ts; |
|
|
1039 | worker *self = (worker *)thr_arg; |
|
|
1040 | |
|
|
1041 | /* try to distribute timeouts somewhat evenly */ |
|
|
1042 | ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL) |
|
|
1043 | * (1000000000UL / 1024UL); |
741 | |
1044 | |
742 | for (;;) |
1045 | for (;;) |
743 | { |
1046 | { |
744 | errno = 0, readdir_r (dirp, &u.d, &entp); |
1047 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
745 | |
1048 | |
746 | if (!entp) |
1049 | LOCK (reqlock); |
747 | break; |
|
|
748 | |
|
|
749 | name = entp->d_name; |
|
|
750 | |
|
|
751 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
|
|
752 | { |
|
|
753 | int len = strlen (name) + 1; |
|
|
754 | |
|
|
755 | res++; |
|
|
756 | |
|
|
757 | while (memofs + len > memlen) |
|
|
758 | { |
|
|
759 | memlen *= 2; |
|
|
760 | names = realloc (names, memlen); |
|
|
761 | if (!names) |
|
|
762 | break; |
|
|
763 | } |
|
|
764 | |
|
|
765 | memcpy (names + memofs, name, len); |
|
|
766 | memofs += len; |
|
|
767 | } |
|
|
768 | } |
|
|
769 | |
|
|
770 | errorno = errno; |
|
|
771 | closedir (dirp); |
|
|
772 | |
|
|
773 | if (errorno) |
|
|
774 | { |
|
|
775 | free (names); |
|
|
776 | errno = errorno; |
|
|
777 | res = -1; |
|
|
778 | } |
|
|
779 | |
|
|
780 | *namesp = (void *)names; |
|
|
781 | return res; |
|
|
782 | } |
|
|
783 | |
|
|
784 | /*****************************************************************************/ |
|
|
785 | |
|
|
786 | static void *aio_proc (void *thr_arg) |
|
|
787 | { |
|
|
788 | aio_req req; |
|
|
789 | int type; |
|
|
790 | |
|
|
791 | do |
|
|
792 | { |
|
|
793 | pthread_mutex_lock (&reqlock); |
|
|
794 | |
1050 | |
795 | for (;;) |
1051 | for (;;) |
796 | { |
1052 | { |
797 | req = reqs; |
1053 | self->req = req = reqq_shift (&req_queue); |
798 | |
|
|
799 | if (reqs) |
|
|
800 | { |
|
|
801 | reqs = reqs->next; |
|
|
802 | if (!reqs) reqe = 0; |
|
|
803 | } |
|
|
804 | |
1054 | |
805 | if (req) |
1055 | if (req) |
806 | break; |
1056 | break; |
807 | |
1057 | |
|
|
1058 | ++idle; |
|
|
1059 | |
|
|
1060 | if (pthread_cond_timedwait (&reqwait, &reqlock, &ts) |
|
|
1061 | == ETIMEDOUT) |
|
|
1062 | { |
|
|
1063 | if (idle > max_idle) |
|
|
1064 | { |
|
|
1065 | --idle; |
|
|
1066 | UNLOCK (reqlock); |
|
|
1067 | LOCK (wrklock); |
|
|
1068 | --started; |
|
|
1069 | UNLOCK (wrklock); |
|
|
1070 | goto quit; |
|
|
1071 | } |
|
|
1072 | |
|
|
1073 | /* we are allowed to idle, so do so without any timeout */ |
808 | pthread_cond_wait (&reqwait, &reqlock); |
1074 | pthread_cond_wait (&reqwait, &reqlock); |
|
|
1075 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
|
|
1076 | } |
|
|
1077 | |
|
|
1078 | --idle; |
809 | } |
1079 | } |
810 | |
1080 | |
811 | pthread_mutex_unlock (&reqlock); |
1081 | --nready; |
|
|
1082 | |
|
|
1083 | UNLOCK (reqlock); |
812 | |
1084 | |
813 | errno = 0; /* strictly unnecessary */ |
1085 | errno = 0; /* strictly unnecessary */ |
814 | type = req->type; /* remember type for QUIT check */ |
|
|
815 | |
1086 | |
816 | if (!(req->flags & FLAG_CANCELLED)) |
1087 | if (!(req->flags & FLAG_CANCELLED)) |
817 | switch (type) |
1088 | switch (req->type) |
818 | { |
1089 | { |
819 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
1090 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
820 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
1091 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
821 | |
1092 | |
822 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
1093 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
823 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; |
1094 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break; |
824 | |
1095 | |
825 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
1096 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
826 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
1097 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
827 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
1098 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
828 | |
1099 | |
… | |
… | |
831 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
1102 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
832 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
1103 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
833 | case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; |
1104 | case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; |
834 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
1105 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
835 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
1106 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
|
|
1107 | case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break; |
836 | |
1108 | |
837 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
1109 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
838 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
1110 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
839 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
1111 | case REQ_READDIR: scandir_ (req, self); break; |
840 | |
1112 | |
841 | case REQ_SLEEP: |
1113 | case REQ_BUSY: |
842 | { |
1114 | { |
843 | struct timeval tv; |
1115 | struct timeval tv; |
844 | |
1116 | |
845 | tv.tv_sec = req->fd; |
1117 | tv.tv_sec = req->fd; |
846 | tv.tv_usec = req->fd2; |
1118 | tv.tv_usec = req->fd2; |
… | |
… | |
848 | req->result = select (0, 0, 0, 0, &tv); |
1120 | req->result = select (0, 0, 0, 0, &tv); |
849 | } |
1121 | } |
850 | |
1122 | |
851 | case REQ_GROUP: |
1123 | case REQ_GROUP: |
852 | case REQ_NOP: |
1124 | case REQ_NOP: |
|
|
1125 | break; |
|
|
1126 | |
853 | case REQ_QUIT: |
1127 | case REQ_QUIT: |
854 | break; |
1128 | goto quit; |
855 | |
1129 | |
856 | default: |
1130 | default: |
857 | req->result = ENOSYS; |
1131 | req->result = ENOSYS; |
858 | break; |
1132 | break; |
859 | } |
1133 | } |
860 | |
1134 | |
861 | req->errorno = errno; |
1135 | req->errorno = errno; |
862 | |
1136 | |
863 | pthread_mutex_lock (&reslock); |
1137 | LOCK (reslock); |
864 | |
1138 | |
865 | req->next = 0; |
1139 | ++npending; |
866 | |
1140 | |
867 | if (rese) |
1141 | if (!reqq_push (&res_queue, req)) |
868 | { |
|
|
869 | rese->next = req; |
|
|
870 | rese = req; |
|
|
871 | } |
|
|
872 | else |
|
|
873 | { |
|
|
874 | rese = ress = req; |
|
|
875 | |
|
|
876 | /* write a dummy byte to the pipe so fh becomes ready */ |
1142 | /* write a dummy byte to the pipe so fh becomes ready */ |
877 | write (respipe [1], &respipe, 1); |
1143 | write (respipe [1], &respipe, 1); |
878 | } |
|
|
879 | |
1144 | |
880 | pthread_mutex_unlock (&reslock); |
1145 | self->req = 0; |
|
|
1146 | worker_clear (self); |
|
|
1147 | |
|
|
1148 | UNLOCK (reslock); |
881 | } |
1149 | } |
882 | while (type != REQ_QUIT); |
1150 | |
|
|
1151 | quit: |
|
|
1152 | LOCK (wrklock); |
|
|
1153 | worker_free (self); |
|
|
1154 | UNLOCK (wrklock); |
883 | |
1155 | |
884 | return 0; |
1156 | return 0; |
885 | } |
1157 | } |
886 | |
1158 | |
887 | /*****************************************************************************/ |
1159 | /*****************************************************************************/ |
888 | |
1160 | |
889 | static void atfork_prepare (void) |
1161 | static void atfork_prepare (void) |
890 | { |
1162 | { |
891 | pthread_mutex_lock (&reqlock); |
1163 | LOCK (wrklock); |
892 | pthread_mutex_lock (&reslock); |
1164 | LOCK (reqlock); |
|
|
1165 | LOCK (reslock); |
893 | #if !HAVE_PREADWRITE |
1166 | #if !HAVE_PREADWRITE |
894 | pthread_mutex_lock (&preadwritelock); |
1167 | LOCK (preadwritelock); |
895 | #endif |
1168 | #endif |
896 | #if !HAVE_READDIR_R |
1169 | #if !HAVE_READDIR_R |
897 | pthread_mutex_lock (&readdirlock); |
1170 | LOCK (readdirlock); |
898 | #endif |
1171 | #endif |
899 | } |
1172 | } |
900 | |
1173 | |
901 | static void atfork_parent (void) |
1174 | static void atfork_parent (void) |
902 | { |
1175 | { |
903 | #if !HAVE_READDIR_R |
1176 | #if !HAVE_READDIR_R |
904 | pthread_mutex_unlock (&readdirlock); |
1177 | UNLOCK (readdirlock); |
905 | #endif |
1178 | #endif |
906 | #if !HAVE_PREADWRITE |
1179 | #if !HAVE_PREADWRITE |
907 | pthread_mutex_unlock (&preadwritelock); |
1180 | UNLOCK (preadwritelock); |
908 | #endif |
1181 | #endif |
909 | pthread_mutex_unlock (&reslock); |
1182 | UNLOCK (reslock); |
910 | pthread_mutex_unlock (&reqlock); |
1183 | UNLOCK (reqlock); |
|
|
1184 | UNLOCK (wrklock); |
911 | } |
1185 | } |
912 | |
1186 | |
913 | static void atfork_child (void) |
1187 | static void atfork_child (void) |
914 | { |
1188 | { |
915 | aio_req prv; |
1189 | aio_req prv; |
916 | |
1190 | |
|
|
1191 | while (prv = reqq_shift (&req_queue)) |
|
|
1192 | req_free (prv); |
|
|
1193 | |
|
|
1194 | while (prv = reqq_shift (&res_queue)) |
|
|
1195 | req_free (prv); |
|
|
1196 | |
|
|
1197 | while (wrk_first.next != &wrk_first) |
|
|
1198 | { |
|
|
1199 | worker *wrk = wrk_first.next; |
|
|
1200 | |
|
|
1201 | if (wrk->req) |
|
|
1202 | req_free (wrk->req); |
|
|
1203 | |
|
|
1204 | worker_clear (wrk); |
|
|
1205 | worker_free (wrk); |
|
|
1206 | } |
|
|
1207 | |
917 | started = 0; |
1208 | started = 0; |
918 | |
1209 | idle = 0; |
919 | while (reqs) |
1210 | nreqs = 0; |
920 | { |
1211 | nready = 0; |
921 | prv = reqs; |
1212 | npending = 0; |
922 | reqs = prv->next; |
|
|
923 | req_free (prv); |
|
|
924 | } |
|
|
925 | |
|
|
926 | reqs = reqe = 0; |
|
|
927 | |
|
|
928 | while (ress) |
|
|
929 | { |
|
|
930 | prv = ress; |
|
|
931 | ress = prv->next; |
|
|
932 | req_free (prv); |
|
|
933 | } |
|
|
934 | |
|
|
935 | ress = rese = 0; |
|
|
936 | |
1213 | |
937 | close (respipe [0]); |
1214 | close (respipe [0]); |
938 | close (respipe [1]); |
1215 | close (respipe [1]); |
939 | create_pipe (); |
1216 | create_pipe (); |
940 | |
1217 | |
… | |
… | |
967 | PROTOTYPES: ENABLE |
1244 | PROTOTYPES: ENABLE |
968 | |
1245 | |
969 | BOOT: |
1246 | BOOT: |
970 | { |
1247 | { |
971 | HV *stash = gv_stashpv ("IO::AIO", 1); |
1248 | HV *stash = gv_stashpv ("IO::AIO", 1); |
|
|
1249 | |
972 | newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); |
1250 | newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); |
973 | newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); |
1251 | newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); |
974 | newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); |
1252 | newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); |
|
|
1253 | newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT)); |
|
|
1254 | newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC)); |
|
|
1255 | newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO)); |
975 | |
1256 | |
976 | create_pipe (); |
1257 | create_pipe (); |
977 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
1258 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
978 | } |
1259 | } |
979 | |
1260 | |
980 | void |
1261 | void |
981 | min_parallel (nthreads) |
1262 | max_poll_reqs (int nreqs) |
982 | int nthreads |
|
|
983 | PROTOTYPE: $ |
1263 | PROTOTYPE: $ |
|
|
1264 | CODE: |
|
|
1265 | max_poll_reqs = nreqs; |
984 | |
1266 | |
985 | void |
1267 | void |
986 | max_parallel (nthreads) |
1268 | max_poll_time (double nseconds) |
987 | int nthreads |
|
|
988 | PROTOTYPE: $ |
1269 | PROTOTYPE: $ |
|
|
1270 | CODE: |
|
|
1271 | max_poll_time = nseconds * AIO_TICKS; |
|
|
1272 | |
|
|
1273 | void |
|
|
1274 | min_parallel (int nthreads) |
|
|
1275 | PROTOTYPE: $ |
|
|
1276 | |
|
|
1277 | void |
|
|
1278 | max_parallel (int nthreads) |
|
|
1279 | PROTOTYPE: $ |
|
|
1280 | |
|
|
1281 | void |
|
|
1282 | max_idle (int nthreads) |
|
|
1283 | PROTOTYPE: $ |
|
|
1284 | CODE: |
|
|
1285 | set_max_idle (nthreads); |
989 | |
1286 | |
990 | int |
1287 | int |
991 | max_outstanding (nreqs) |
1288 | max_outstanding (int maxreqs) |
992 | int nreqs |
1289 | PROTOTYPE: $ |
993 | PROTOTYPE: $ |
|
|
994 | CODE: |
1290 | CODE: |
995 | RETVAL = max_outstanding; |
1291 | RETVAL = max_outstanding; |
996 | max_outstanding = nreqs; |
1292 | max_outstanding = maxreqs; |
|
|
1293 | OUTPUT: |
|
|
1294 | RETVAL |
997 | |
1295 | |
998 | void |
1296 | void |
999 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
1297 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
1000 | SV * pathname |
1298 | SV * pathname |
1001 | int flags |
1299 | int flags |
… | |
… | |
1216 | |
1514 | |
1217 | REQ_SEND; |
1515 | REQ_SEND; |
1218 | } |
1516 | } |
1219 | |
1517 | |
1220 | void |
1518 | void |
|
|
1519 | aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) |
|
|
1520 | SV * pathname |
|
|
1521 | SV * callback |
|
|
1522 | UV mode |
|
|
1523 | UV dev |
|
|
1524 | PPCODE: |
|
|
1525 | { |
|
|
1526 | dREQ; |
|
|
1527 | |
|
|
1528 | req->type = REQ_MKNOD; |
|
|
1529 | req->data = newSVsv (pathname); |
|
|
1530 | req->dataptr = SvPVbyte_nolen (req->data); |
|
|
1531 | req->mode = (mode_t)mode; |
|
|
1532 | req->offset = dev; |
|
|
1533 | |
|
|
1534 | REQ_SEND; |
|
|
1535 | } |
|
|
1536 | |
|
|
1537 | void |
1221 | aio_sleep (delay,callback=&PL_sv_undef) |
1538 | aio_busy (delay,callback=&PL_sv_undef) |
1222 | double delay |
1539 | double delay |
1223 | SV * callback |
1540 | SV * callback |
1224 | PPCODE: |
1541 | PPCODE: |
1225 | { |
1542 | { |
1226 | dREQ; |
1543 | dREQ; |
1227 | |
1544 | |
1228 | req->type = REQ_SLEEP; |
1545 | req->type = REQ_BUSY; |
1229 | req->fd = delay < 0. ? 0 : delay; |
1546 | req->fd = delay < 0. ? 0 : delay; |
1230 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1547 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1231 | |
1548 | |
1232 | REQ_SEND; |
1549 | REQ_SEND; |
1233 | } |
1550 | } |
… | |
… | |
1256 | req->type = REQ_NOP; |
1573 | req->type = REQ_NOP; |
1257 | |
1574 | |
1258 | REQ_SEND; |
1575 | REQ_SEND; |
1259 | } |
1576 | } |
1260 | |
1577 | |
1261 | #if 0 |
1578 | int |
1262 | |
1579 | aioreq_pri (int pri = 0) |
1263 | void |
1580 | PROTOTYPE: ;$ |
1264 | aio_pri (int pri = DEFAULT_PRI) |
|
|
1265 | CODE: |
1581 | CODE: |
|
|
1582 | RETVAL = next_pri - PRI_BIAS; |
|
|
1583 | if (items > 0) |
|
|
1584 | { |
1266 | if (pri < PRI_MIN) pri = PRI_MIN; |
1585 | if (pri < PRI_MIN) pri = PRI_MIN; |
1267 | if (pri > PRI_MAX) pri = PRI_MAX; |
1586 | if (pri > PRI_MAX) pri = PRI_MAX; |
1268 | next_pri = pri + PRI_BIAS; |
1587 | next_pri = pri + PRI_BIAS; |
|
|
1588 | } |
|
|
1589 | OUTPUT: |
|
|
1590 | RETVAL |
1269 | |
1591 | |
1270 | #endif |
1592 | void |
|
|
1593 | aioreq_nice (int nice = 0) |
|
|
1594 | CODE: |
|
|
1595 | nice = next_pri - nice; |
|
|
1596 | if (nice < PRI_MIN) nice = PRI_MIN; |
|
|
1597 | if (nice > PRI_MAX) nice = PRI_MAX; |
|
|
1598 | next_pri = nice + PRI_BIAS; |
1271 | |
1599 | |
1272 | void |
1600 | void |
1273 | flush () |
1601 | flush () |
1274 | PROTOTYPE: |
1602 | PROTOTYPE: |
1275 | CODE: |
1603 | CODE: |
1276 | while (nreqs) |
1604 | while (nreqs) |
1277 | { |
1605 | { |
1278 | poll_wait (); |
1606 | poll_wait (); |
1279 | poll_cb (); |
1607 | poll_cb (0); |
1280 | } |
1608 | } |
1281 | |
1609 | |
1282 | void |
1610 | void |
1283 | poll() |
1611 | poll() |
1284 | PROTOTYPE: |
1612 | PROTOTYPE: |
1285 | CODE: |
1613 | CODE: |
1286 | if (nreqs) |
1614 | if (nreqs) |
1287 | { |
1615 | { |
1288 | poll_wait (); |
1616 | poll_wait (); |
1289 | poll_cb (); |
1617 | poll_cb (0); |
1290 | } |
1618 | } |
1291 | |
1619 | |
1292 | int |
1620 | int |
1293 | poll_fileno() |
1621 | poll_fileno() |
1294 | PROTOTYPE: |
1622 | PROTOTYPE: |
… | |
… | |
1318 | CODE: |
1646 | CODE: |
1319 | RETVAL = nreqs; |
1647 | RETVAL = nreqs; |
1320 | OUTPUT: |
1648 | OUTPUT: |
1321 | RETVAL |
1649 | RETVAL |
1322 | |
1650 | |
|
|
1651 | int |
|
|
1652 | nready() |
|
|
1653 | PROTOTYPE: |
|
|
1654 | CODE: |
|
|
1655 | RETVAL = get_nready (); |
|
|
1656 | OUTPUT: |
|
|
1657 | RETVAL |
|
|
1658 | |
|
|
1659 | int |
|
|
1660 | npending() |
|
|
1661 | PROTOTYPE: |
|
|
1662 | CODE: |
|
|
1663 | RETVAL = get_npending (); |
|
|
1664 | OUTPUT: |
|
|
1665 | RETVAL |
|
|
1666 | |
|
|
1667 | int |
|
|
1668 | nthreads() |
|
|
1669 | PROTOTYPE: |
|
|
1670 | CODE: |
|
|
1671 | if (WORDACCESS_UNSAFE) LOCK (wrklock); |
|
|
1672 | RETVAL = started; |
|
|
1673 | if (WORDACCESS_UNSAFE) UNLOCK (wrklock); |
|
|
1674 | OUTPUT: |
|
|
1675 | RETVAL |
|
|
1676 | |
1323 | PROTOTYPES: DISABLE |
1677 | PROTOTYPES: DISABLE |
1324 | |
1678 | |
1325 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1679 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1326 | |
1680 | |
1327 | void |
1681 | void |
1328 | cancel (aio_req_ornot req) |
1682 | cancel (aio_req_ornot req) |
1329 | PROTOTYPE: |
|
|
1330 | CODE: |
1683 | CODE: |
1331 | req_cancel (req); |
1684 | req_cancel (req); |
1332 | |
1685 | |
1333 | void |
1686 | void |
1334 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
1687 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
… | |
… | |
1370 | } |
1723 | } |
1371 | } |
1724 | } |
1372 | } |
1725 | } |
1373 | |
1726 | |
1374 | void |
1727 | void |
|
|
1728 | cancel_subs (aio_req_ornot req) |
|
|
1729 | CODE: |
|
|
1730 | req_cancel_subs (req); |
|
|
1731 | |
|
|
1732 | void |
1375 | result (aio_req grp, ...) |
1733 | result (aio_req grp, ...) |
1376 | CODE: |
1734 | CODE: |
1377 | { |
1735 | { |
1378 | int i; |
1736 | int i; |
|
|
1737 | AV *av; |
|
|
1738 | |
|
|
1739 | grp->errorno = errno; |
|
|
1740 | |
1379 | AV *av = newAV (); |
1741 | av = newAV (); |
1380 | |
1742 | |
1381 | for (i = 1; i < items; ++i ) |
1743 | for (i = 1; i < items; ++i ) |
1382 | av_push (av, newSVsv (ST (i))); |
1744 | av_push (av, newSVsv (ST (i))); |
1383 | |
1745 | |
1384 | SvREFCNT_dec (grp->data); |
1746 | SvREFCNT_dec (grp->data); |
1385 | grp->data = (SV *)av; |
1747 | grp->data = (SV *)av; |
1386 | } |
1748 | } |
1387 | |
1749 | |
1388 | void |
1750 | void |
|
|
1751 | errno (aio_req grp, int errorno = errno) |
|
|
1752 | CODE: |
|
|
1753 | grp->errorno = errorno; |
|
|
1754 | |
|
|
1755 | void |
1389 | feed_limit (aio_req grp, int limit) |
1756 | limit (aio_req grp, int limit) |
1390 | CODE: |
1757 | CODE: |
1391 | grp->fd2 = limit; |
1758 | grp->fd2 = limit; |
1392 | aio_grp_feed (grp); |
1759 | aio_grp_feed (grp); |
1393 | |
1760 | |
1394 | void |
1761 | void |