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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" |
… | |
… | |
39 | /* used for struct dirent, AIX doesn't provide it */ |
48 | /* used for struct dirent, AIX doesn't provide it */ |
40 | #ifndef NAME_MAX |
49 | #ifndef NAME_MAX |
41 | # define NAME_MAX 4096 |
50 | # define NAME_MAX 4096 |
42 | #endif |
51 | #endif |
43 | |
52 | |
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53 | #ifndef PTHREAD_STACK_MIN |
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54 | /* care for broken platforms, e.g. windows */ |
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55 | # define PTHREAD_STACK_MIN 16384 |
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56 | #endif |
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57 | |
44 | #if __ia64 |
58 | #if __ia64 |
45 | # define STACKSIZE 65536 |
59 | # define STACKSIZE 65536 |
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60 | #elif __i386 || __x86_64 /* 16k is unreasonably high :( */ |
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61 | # define STACKSIZE PTHREAD_STACK_MIN |
46 | #else |
62 | #else |
47 | # define STACKSIZE 8192 |
63 | # define STACKSIZE 16384 |
48 | #endif |
64 | #endif |
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65 | |
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66 | /* buffer size for various temporary buffers */ |
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67 | #define AIO_BUFSIZE 65536 |
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68 | |
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69 | #define dBUF \ |
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70 | char *aio_buf; \ |
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71 | LOCK (wrklock); \ |
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72 | self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ |
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73 | UNLOCK (wrklock); \ |
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74 | if (!aio_buf) \ |
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75 | return -1; |
49 | |
76 | |
50 | enum { |
77 | enum { |
51 | REQ_QUIT, |
78 | REQ_QUIT, |
52 | REQ_OPEN, REQ_CLOSE, |
79 | REQ_OPEN, REQ_CLOSE, |
53 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
80 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
… | |
… | |
55 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
82 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
56 | REQ_FSYNC, REQ_FDATASYNC, |
83 | REQ_FSYNC, REQ_FDATASYNC, |
57 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
84 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
58 | REQ_READDIR, |
85 | REQ_READDIR, |
59 | REQ_LINK, REQ_SYMLINK, |
86 | REQ_LINK, REQ_SYMLINK, |
60 | REQ_SLEEP, |
87 | REQ_GROUP, REQ_NOP, |
61 | REQ_GROUP, |
88 | REQ_BUSY, |
62 | }; |
89 | }; |
63 | |
90 | |
64 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
91 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
65 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
92 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
66 | |
93 | |
67 | typedef struct aio_cb |
94 | typedef struct aio_cb |
68 | { |
95 | { |
69 | struct aio_cb *volatile next; |
96 | struct aio_cb *volatile next; |
70 | |
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71 | struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; |
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72 | |
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73 | SV *self; /* the perl counterpart of this request, if any */ |
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74 | |
97 | |
75 | SV *data, *callback; |
98 | SV *data, *callback; |
76 | SV *fh, *fh2; |
99 | SV *fh, *fh2; |
77 | void *dataptr, *data2ptr; |
100 | void *dataptr, *data2ptr; |
78 | Stat_t *statdata; |
101 | Stat_t *statdata; |
79 | off_t offset; |
102 | off_t offset; |
80 | size_t length; |
103 | size_t length; |
81 | ssize_t result; |
104 | ssize_t result; |
82 | |
105 | |
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106 | STRLEN dataoffset; |
83 | int type; |
107 | int type; |
84 | int fd, fd2; |
108 | int fd, fd2; |
85 | int errorno; |
109 | int errorno; |
86 | STRLEN dataoffset; |
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87 | mode_t mode; /* open */ |
110 | mode_t mode; /* open */ |
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111 | |
88 | unsigned char cancelled; |
112 | unsigned char flags; |
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113 | unsigned char pri; |
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114 | |
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115 | SV *self; /* the perl counterpart of this request, if any */ |
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116 | struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; |
89 | } aio_cb; |
117 | } aio_cb; |
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118 | |
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119 | enum { |
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120 | FLAG_CANCELLED = 0x01, |
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121 | }; |
90 | |
122 | |
91 | typedef aio_cb *aio_req; |
123 | typedef aio_cb *aio_req; |
92 | typedef aio_cb *aio_req_ornot; |
124 | typedef aio_cb *aio_req_ornot; |
93 | |
125 | |
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126 | enum { |
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127 | PRI_MIN = -4, |
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128 | PRI_MAX = 4, |
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129 | |
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130 | DEFAULT_PRI = 0, |
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131 | PRI_BIAS = -PRI_MIN, |
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132 | NUM_PRI = PRI_MAX + PRI_BIAS + 1, |
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133 | }; |
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134 | |
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135 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
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136 | |
94 | static int started, wanted; |
137 | static int started, wanted; |
95 | static volatile int nreqs; |
138 | static volatile int nreqs; |
96 | static int max_outstanding = 1<<30; |
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97 | static int respipe [2]; |
139 | static int respipe [2]; |
98 | |
140 | |
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141 | #if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
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142 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
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143 | #else |
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144 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
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145 | #endif |
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146 | |
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147 | #define LOCK(mutex) pthread_mutex_lock (&(mutex)) |
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148 | #define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) |
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149 | |
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150 | /* worker threads management */ |
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151 | static pthread_mutex_t wrklock = AIO_MUTEX_INIT; |
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152 | |
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153 | typedef struct worker { |
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154 | /* locked by wrklock */ |
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155 | struct worker *prev, *next; |
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156 | |
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157 | pthread_t tid; |
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158 | |
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159 | /* locked by reslock, reqlock or wrklock */ |
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160 | aio_req req; /* currently processed request */ |
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161 | void *dbuf; |
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162 | DIR *dirp; |
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163 | } worker; |
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164 | |
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165 | static worker wrk_first = { &wrk_first, &wrk_first, 0 }; |
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166 | |
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167 | static void worker_clear (worker *wrk) |
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168 | { |
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169 | if (wrk->dirp) |
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170 | { |
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171 | closedir (wrk->dirp); |
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172 | wrk->dirp = 0; |
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173 | } |
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174 | |
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175 | if (wrk->dbuf) |
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176 | { |
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177 | free (wrk->dbuf); |
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178 | wrk->dbuf = 0; |
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179 | } |
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180 | } |
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181 | |
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182 | static void worker_free (worker *wrk) |
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183 | { |
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184 | wrk->next->prev = wrk->prev; |
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185 | wrk->prev->next = wrk->next; |
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186 | |
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187 | free (wrk); |
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188 | } |
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189 | |
99 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
190 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
100 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
191 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
101 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
192 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
102 | |
193 | |
103 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
194 | /* |
104 | static volatile aio_req ress, rese; /* queue start, queue end */ |
195 | * a somewhat faster data structure might be nice, but |
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196 | * with 8 priorities this actually needs <20 insns |
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197 | * per shift, the most expensive operation. |
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198 | */ |
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199 | typedef struct { |
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200 | aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */ |
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201 | int size; |
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202 | } reqq; |
105 | |
203 | |
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204 | static reqq req_queue; |
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205 | static reqq res_queue; |
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206 | |
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207 | int reqq_push (reqq *q, aio_req req) |
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208 | { |
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209 | int pri = req->pri; |
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210 | req->next = 0; |
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211 | |
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212 | if (q->qe[pri]) |
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213 | { |
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214 | q->qe[pri]->next = req; |
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215 | q->qe[pri] = req; |
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216 | } |
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217 | else |
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218 | q->qe[pri] = q->qs[pri] = req; |
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219 | |
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220 | return q->size++; |
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221 | } |
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222 | |
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223 | aio_req reqq_shift (reqq *q) |
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224 | { |
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225 | int pri; |
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226 | |
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227 | if (!q->size) |
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228 | return 0; |
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229 | |
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230 | --q->size; |
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231 | |
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232 | for (pri = NUM_PRI; pri--; ) |
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233 | { |
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234 | aio_req req = q->qs[pri]; |
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235 | |
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236 | if (req) |
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237 | { |
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238 | if (!(q->qs[pri] = req->next)) |
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239 | q->qe[pri] = 0; |
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240 | |
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241 | return req; |
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242 | } |
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243 | } |
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244 | |
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245 | abort (); |
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246 | } |
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247 | |
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248 | static int poll_cb (int max); |
106 | static void req_invoke (aio_req req); |
249 | static void req_invoke (aio_req req); |
107 | static void req_free (aio_req req); |
250 | static void req_free (aio_req req); |
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251 | static void req_cancel (aio_req req); |
108 | |
252 | |
109 | /* must be called at most once */ |
253 | /* must be called at most once */ |
110 | static SV *req_sv (aio_req req, const char *klass) |
254 | static SV *req_sv (aio_req req, const char *klass) |
111 | { |
255 | { |
112 | if (!req->self) |
256 | if (!req->self) |
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118 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
262 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
119 | } |
263 | } |
120 | |
264 | |
121 | static aio_req SvAIO_REQ (SV *sv) |
265 | static aio_req SvAIO_REQ (SV *sv) |
122 | { |
266 | { |
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267 | MAGIC *mg; |
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268 | |
123 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
269 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
124 | croak ("object of class " AIO_REQ_KLASS " expected"); |
270 | croak ("object of class " AIO_REQ_KLASS " expected"); |
125 | |
271 | |
126 | MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
272 | mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
127 | |
273 | |
128 | return mg ? (aio_req)mg->mg_ptr : 0; |
274 | return mg ? (aio_req)mg->mg_ptr : 0; |
129 | } |
275 | } |
130 | |
276 | |
131 | static void aio_grp_feed (aio_req grp) |
277 | static void aio_grp_feed (aio_req grp) |
132 | { |
278 | { |
133 | while (grp->length < grp->fd2) |
279 | while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) |
134 | { |
280 | { |
135 | int old_len = grp->length; |
281 | int old_len = grp->length; |
136 | |
282 | |
137 | if (grp->fh2 && SvOK (grp->fh2)) |
283 | if (grp->fh2 && SvOK (grp->fh2)) |
138 | { |
284 | { |
… | |
… | |
141 | ENTER; |
287 | ENTER; |
142 | SAVETMPS; |
288 | SAVETMPS; |
143 | PUSHMARK (SP); |
289 | PUSHMARK (SP); |
144 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
290 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
145 | PUTBACK; |
291 | PUTBACK; |
146 | call_sv (grp->fh2, G_VOID | G_EVAL); |
292 | call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); |
147 | SPAGAIN; |
293 | SPAGAIN; |
148 | FREETMPS; |
294 | FREETMPS; |
149 | LEAVE; |
295 | LEAVE; |
150 | } |
296 | } |
151 | |
297 | |
… | |
… | |
174 | } |
320 | } |
175 | } |
321 | } |
176 | |
322 | |
177 | static void poll_wait () |
323 | static void poll_wait () |
178 | { |
324 | { |
179 | if (nreqs && !ress) |
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180 | { |
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181 | fd_set rfd; |
325 | fd_set rfd; |
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326 | |
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327 | while (nreqs) |
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328 | { |
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329 | int size; |
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330 | #if !(__i386 || __x86_64) /* safe without sempahore on these archs */ |
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331 | LOCK (reslock); |
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332 | #endif |
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333 | size = res_queue.size; |
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334 | #if !(__i386 || __x86_64) /* safe without sempahore on these archs */ |
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335 | UNLOCK (reslock); |
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336 | #endif |
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337 | |
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338 | if (size) |
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339 | return; |
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340 | |
182 | FD_ZERO(&rfd); |
341 | FD_ZERO(&rfd); |
183 | FD_SET(respipe [0], &rfd); |
342 | FD_SET(respipe [0], &rfd); |
184 | |
343 | |
185 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
344 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
186 | } |
345 | } |
187 | } |
346 | } |
188 | |
347 | |
189 | static void req_invoke (aio_req req) |
348 | static void req_invoke (aio_req req) |
190 | { |
349 | { |
191 | dSP; |
350 | dSP; |
192 | int errorno = errno; |
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193 | |
351 | |
194 | if (req->cancelled || !SvOK (req->callback)) |
352 | if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
195 | return; |
353 | { |
196 | |
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197 | errno = req->errorno; |
354 | errno = req->errorno; |
198 | |
355 | |
199 | ENTER; |
356 | ENTER; |
200 | SAVETMPS; |
357 | SAVETMPS; |
201 | PUSHMARK (SP); |
358 | PUSHMARK (SP); |
202 | EXTEND (SP, 1); |
359 | EXTEND (SP, 1); |
203 | |
360 | |
204 | switch (req->type) |
361 | switch (req->type) |
205 | { |
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206 | case REQ_READDIR: |
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207 | { |
362 | { |
208 | SV *rv = &PL_sv_undef; |
363 | case REQ_READDIR: |
209 | |
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210 | if (req->result >= 0) |
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211 | { |
364 | { |
212 | char *buf = req->data2ptr; |
365 | SV *rv = &PL_sv_undef; |
213 | AV *av = newAV (); |
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214 | |
366 | |
215 | while (req->result) |
367 | if (req->result >= 0) |
216 | { |
368 | { |
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369 | int i; |
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370 | char *buf = req->data2ptr; |
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371 | AV *av = newAV (); |
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372 | |
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373 | av_extend (av, req->result - 1); |
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374 | |
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375 | for (i = 0; i < req->result; ++i) |
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376 | { |
217 | SV *sv = newSVpv (buf, 0); |
377 | SV *sv = newSVpv (buf, 0); |
218 | |
378 | |
219 | av_push (av, sv); |
379 | av_store (av, i, sv); |
220 | buf += SvCUR (sv) + 1; |
380 | buf += SvCUR (sv) + 1; |
221 | req->result--; |
381 | } |
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382 | |
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383 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
222 | } |
384 | } |
223 | |
385 | |
224 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
386 | PUSHs (rv); |
225 | } |
387 | } |
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388 | break; |
226 | |
389 | |
227 | PUSHs (rv); |
390 | case REQ_OPEN: |
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391 | { |
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392 | /* convert fd to fh */ |
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393 | SV *fh; |
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394 | |
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395 | PUSHs (sv_2mortal (newSViv (req->result))); |
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396 | PUTBACK; |
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397 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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398 | SPAGAIN; |
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399 | |
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400 | fh = SvREFCNT_inc (POPs); |
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401 | |
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402 | PUSHMARK (SP); |
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403 | XPUSHs (sv_2mortal (fh)); |
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404 | } |
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405 | break; |
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406 | |
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407 | case REQ_GROUP: |
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408 | req->fd = 2; /* mark group as finished */ |
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409 | |
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410 | if (req->data) |
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411 | { |
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412 | int i; |
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413 | AV *av = (AV *)req->data; |
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414 | |
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415 | EXTEND (SP, AvFILL (av) + 1); |
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416 | for (i = 0; i <= AvFILL (av); ++i) |
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417 | PUSHs (*av_fetch (av, i, 0)); |
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418 | } |
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419 | break; |
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420 | |
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421 | case REQ_NOP: |
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422 | case REQ_BUSY: |
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423 | break; |
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424 | |
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425 | default: |
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426 | PUSHs (sv_2mortal (newSViv (req->result))); |
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427 | break; |
228 | } |
428 | } |
229 | break; |
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230 | |
429 | |
231 | case REQ_OPEN: |
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232 | { |
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233 | /* convert fd to fh */ |
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234 | SV *fh; |
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235 | |
430 | |
236 | PUSHs (sv_2mortal (newSViv (req->result))); |
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237 | PUTBACK; |
431 | PUTBACK; |
238 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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239 | SPAGAIN; |
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240 | |
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241 | fh = SvREFCNT_inc (POPs); |
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242 | |
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243 | PUSHMARK (SP); |
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244 | XPUSHs (sv_2mortal (fh)); |
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245 | } |
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246 | break; |
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247 | |
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248 | case REQ_GROUP: |
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249 | req->fd = 2; /* mark group as finished */ |
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250 | |
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251 | if (req->data) |
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252 | { |
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253 | int i; |
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254 | AV *av = (AV *)req->data; |
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255 | |
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256 | EXTEND (SP, AvFILL (av) + 1); |
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257 | for (i = 0; i <= AvFILL (av); ++i) |
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258 | PUSHs (*av_fetch (av, i, 0)); |
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259 | } |
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260 | break; |
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261 | |
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262 | case REQ_SLEEP: |
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263 | break; |
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264 | |
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265 | default: |
|
|
266 | PUSHs (sv_2mortal (newSViv (req->result))); |
|
|
267 | break; |
|
|
268 | } |
|
|
269 | |
|
|
270 | |
|
|
271 | PUTBACK; |
|
|
272 | call_sv (req->callback, G_VOID | G_EVAL); |
432 | call_sv (req->callback, G_VOID | G_EVAL); |
273 | SPAGAIN; |
433 | SPAGAIN; |
274 | |
434 | |
275 | FREETMPS; |
435 | FREETMPS; |
276 | LEAVE; |
436 | LEAVE; |
277 | |
|
|
278 | errno = errorno; |
|
|
279 | |
|
|
280 | if (SvTRUE (ERRSV)) |
|
|
281 | { |
437 | } |
282 | req_free (req); |
|
|
283 | croak (0); |
|
|
284 | } |
|
|
285 | } |
|
|
286 | |
438 | |
287 | static void req_free (aio_req req) |
|
|
288 | { |
|
|
289 | if (req->grp) |
439 | if (req->grp) |
290 | { |
440 | { |
291 | aio_req grp = req->grp; |
441 | aio_req grp = req->grp; |
292 | |
442 | |
293 | /* unlink request */ |
443 | /* unlink request */ |
… | |
… | |
298 | grp->grp_first = req->grp_next; |
448 | grp->grp_first = req->grp_next; |
299 | |
449 | |
300 | aio_grp_dec (grp); |
450 | aio_grp_dec (grp); |
301 | } |
451 | } |
302 | |
452 | |
|
|
453 | if (SvTRUE (ERRSV)) |
|
|
454 | { |
|
|
455 | req_free (req); |
|
|
456 | croak (0); |
|
|
457 | } |
|
|
458 | } |
|
|
459 | |
|
|
460 | static void req_free (aio_req req) |
|
|
461 | { |
303 | if (req->self) |
462 | if (req->self) |
304 | { |
463 | { |
305 | sv_unmagic (req->self, PERL_MAGIC_ext); |
464 | sv_unmagic (req->self, PERL_MAGIC_ext); |
306 | SvREFCNT_dec (req->self); |
465 | SvREFCNT_dec (req->self); |
307 | } |
466 | } |
… | |
… | |
310 | SvREFCNT_dec (req->fh); |
469 | SvREFCNT_dec (req->fh); |
311 | SvREFCNT_dec (req->fh2); |
470 | SvREFCNT_dec (req->fh2); |
312 | SvREFCNT_dec (req->callback); |
471 | SvREFCNT_dec (req->callback); |
313 | Safefree (req->statdata); |
472 | Safefree (req->statdata); |
314 | |
473 | |
315 | if (req->type == REQ_READDIR && req->result >= 0) |
474 | if (req->type == REQ_READDIR) |
316 | free (req->data2ptr); |
475 | free (req->data2ptr); |
317 | |
476 | |
318 | Safefree (req); |
477 | Safefree (req); |
319 | } |
478 | } |
320 | |
479 | |
|
|
480 | static void req_cancel_subs (aio_req grp) |
|
|
481 | { |
|
|
482 | aio_req sub; |
|
|
483 | |
|
|
484 | if (grp->type != REQ_GROUP) |
|
|
485 | return; |
|
|
486 | |
|
|
487 | SvREFCNT_dec (grp->fh2); |
|
|
488 | grp->fh2 = 0; |
|
|
489 | |
|
|
490 | for (sub = grp->grp_first; sub; sub = sub->grp_next) |
|
|
491 | req_cancel (sub); |
|
|
492 | } |
|
|
493 | |
321 | static void req_cancel (aio_req req) |
494 | static void req_cancel (aio_req req) |
322 | { |
495 | { |
323 | req->cancelled = 1; |
496 | req->flags |= FLAG_CANCELLED; |
324 | |
497 | |
325 | if (req->type == REQ_GROUP) |
498 | req_cancel_subs (req); |
326 | { |
|
|
327 | aio_req sub; |
|
|
328 | |
|
|
329 | for (sub = req->grp_first; sub; sub = sub->grp_next) |
|
|
330 | req_cancel (sub); |
|
|
331 | } |
|
|
332 | } |
499 | } |
333 | |
500 | |
334 | static int poll_cb () |
501 | static int poll_cb (int max) |
335 | { |
502 | { |
336 | dSP; |
503 | dSP; |
337 | int count = 0; |
504 | int count = 0; |
338 | int do_croak = 0; |
505 | int do_croak = 0; |
339 | aio_req req; |
506 | aio_req req; |
340 | |
507 | |
341 | for (;;) |
508 | while (max <= 0 || count < max) |
342 | { |
509 | { |
343 | pthread_mutex_lock (&reslock); |
510 | LOCK (reslock); |
344 | req = ress; |
511 | req = reqq_shift (&res_queue); |
345 | |
512 | |
346 | if (req) |
513 | if (req) |
347 | { |
514 | { |
348 | ress = req->next; |
|
|
349 | |
|
|
350 | if (!ress) |
515 | if (!res_queue.size) |
351 | { |
516 | { |
352 | /* read any signals sent by the worker threads */ |
517 | /* read any signals sent by the worker threads */ |
353 | char buf [32]; |
518 | char buf [32]; |
354 | while (read (respipe [0], buf, 32) == 32) |
519 | while (read (respipe [0], buf, 32) == 32) |
355 | ; |
520 | ; |
356 | |
|
|
357 | rese = 0; |
|
|
358 | } |
521 | } |
359 | } |
522 | } |
360 | |
523 | |
361 | pthread_mutex_unlock (&reslock); |
524 | UNLOCK (reslock); |
362 | |
525 | |
363 | if (!req) |
526 | if (!req) |
364 | break; |
527 | break; |
365 | |
528 | |
366 | --nreqs; |
529 | --nreqs; |
… | |
… | |
401 | static void *aio_proc(void *arg); |
564 | static void *aio_proc(void *arg); |
402 | |
565 | |
403 | static void start_thread (void) |
566 | static void start_thread (void) |
404 | { |
567 | { |
405 | sigset_t fullsigset, oldsigset; |
568 | sigset_t fullsigset, oldsigset; |
406 | pthread_t tid; |
|
|
407 | pthread_attr_t attr; |
569 | pthread_attr_t attr; |
|
|
570 | |
|
|
571 | worker *wrk = calloc (1, sizeof (worker)); |
|
|
572 | |
|
|
573 | if (!wrk) |
|
|
574 | croak ("unable to allocate worker thread data"); |
408 | |
575 | |
409 | pthread_attr_init (&attr); |
576 | pthread_attr_init (&attr); |
410 | pthread_attr_setstacksize (&attr, STACKSIZE); |
577 | pthread_attr_setstacksize (&attr, STACKSIZE); |
411 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
578 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
412 | |
579 | |
413 | sigfillset (&fullsigset); |
580 | sigfillset (&fullsigset); |
|
|
581 | |
|
|
582 | LOCK (wrklock); |
414 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
583 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
415 | |
584 | |
416 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
585 | if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0) |
|
|
586 | { |
|
|
587 | wrk->prev = &wrk_first; |
|
|
588 | wrk->next = wrk_first.next; |
|
|
589 | wrk_first.next->prev = wrk; |
|
|
590 | wrk_first.next = wrk; |
417 | started++; |
591 | started++; |
|
|
592 | } |
|
|
593 | else |
|
|
594 | free (wrk); |
418 | |
595 | |
419 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
596 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
|
|
597 | UNLOCK (wrklock); |
420 | } |
598 | } |
421 | |
599 | |
422 | static void req_send (aio_req req) |
600 | static void req_send (aio_req req) |
423 | { |
601 | { |
424 | while (started < wanted && nreqs >= started) |
602 | while (started < wanted && nreqs >= started) |
425 | start_thread (); |
603 | start_thread (); |
426 | |
604 | |
427 | ++nreqs; |
605 | ++nreqs; |
428 | |
606 | |
429 | pthread_mutex_lock (&reqlock); |
607 | LOCK (reqlock); |
430 | |
608 | reqq_push (&req_queue, req); |
431 | req->next = 0; |
|
|
432 | |
|
|
433 | if (reqe) |
|
|
434 | { |
|
|
435 | reqe->next = req; |
|
|
436 | reqe = req; |
|
|
437 | } |
|
|
438 | else |
|
|
439 | reqe = reqs = req; |
|
|
440 | |
|
|
441 | pthread_cond_signal (&reqwait); |
609 | pthread_cond_signal (&reqwait); |
442 | pthread_mutex_unlock (&reqlock); |
610 | UNLOCK (reqlock); |
443 | |
|
|
444 | if (nreqs > max_outstanding) |
|
|
445 | for (;;) |
|
|
446 | { |
|
|
447 | poll_cb (); |
|
|
448 | |
|
|
449 | if (nreqs <= max_outstanding) |
|
|
450 | break; |
|
|
451 | |
|
|
452 | poll_wait (); |
|
|
453 | } |
|
|
454 | } |
611 | } |
455 | |
612 | |
456 | static void end_thread (void) |
613 | static void end_thread (void) |
457 | { |
614 | { |
458 | aio_req req; |
615 | aio_req req; |
|
|
616 | |
459 | Newz (0, req, 1, aio_cb); |
617 | Newz (0, req, 1, aio_cb); |
|
|
618 | |
460 | req->type = REQ_QUIT; |
619 | req->type = REQ_QUIT; |
|
|
620 | req->pri = PRI_MAX + PRI_BIAS; |
461 | |
621 | |
462 | req_send (req); |
622 | req_send (req); |
463 | } |
623 | } |
464 | |
624 | |
465 | static void min_parallel (int nthreads) |
625 | static void min_parallel (int nthreads) |
… | |
… | |
482 | } |
642 | } |
483 | |
643 | |
484 | while (started > wanted) |
644 | while (started > wanted) |
485 | { |
645 | { |
486 | poll_wait (); |
646 | poll_wait (); |
487 | poll_cb (); |
647 | poll_cb (0); |
488 | } |
648 | } |
489 | } |
649 | } |
490 | |
650 | |
491 | static void create_pipe () |
651 | static void create_pipe () |
492 | { |
652 | { |
… | |
… | |
517 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
677 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
518 | { |
678 | { |
519 | ssize_t res; |
679 | ssize_t res; |
520 | off_t ooffset; |
680 | off_t ooffset; |
521 | |
681 | |
522 | pthread_mutex_lock (&preadwritelock); |
682 | LOCK (preadwritelock); |
523 | ooffset = lseek (fd, 0, SEEK_CUR); |
683 | ooffset = lseek (fd, 0, SEEK_CUR); |
524 | lseek (fd, offset, SEEK_SET); |
684 | lseek (fd, offset, SEEK_SET); |
525 | res = read (fd, buf, count); |
685 | res = read (fd, buf, count); |
526 | lseek (fd, ooffset, SEEK_SET); |
686 | lseek (fd, ooffset, SEEK_SET); |
527 | pthread_mutex_unlock (&preadwritelock); |
687 | UNLOCK (preadwritelock); |
528 | |
688 | |
529 | return res; |
689 | return res; |
530 | } |
690 | } |
531 | |
691 | |
532 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
692 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
533 | { |
693 | { |
534 | ssize_t res; |
694 | ssize_t res; |
535 | off_t ooffset; |
695 | off_t ooffset; |
536 | |
696 | |
537 | pthread_mutex_lock (&preadwritelock); |
697 | LOCK (preadwritelock); |
538 | ooffset = lseek (fd, 0, SEEK_CUR); |
698 | ooffset = lseek (fd, 0, SEEK_CUR); |
539 | lseek (fd, offset, SEEK_SET); |
699 | lseek (fd, offset, SEEK_SET); |
540 | res = write (fd, buf, count); |
700 | res = write (fd, buf, count); |
541 | lseek (fd, offset, SEEK_SET); |
701 | lseek (fd, offset, SEEK_SET); |
542 | pthread_mutex_unlock (&preadwritelock); |
702 | UNLOCK (preadwritelock); |
543 | |
703 | |
544 | return res; |
704 | return res; |
545 | } |
705 | } |
546 | #endif |
706 | #endif |
547 | |
707 | |
548 | #if !HAVE_FDATASYNC |
708 | #if !HAVE_FDATASYNC |
549 | # define fdatasync fsync |
709 | # define fdatasync fsync |
550 | #endif |
710 | #endif |
551 | |
711 | |
552 | #if !HAVE_READAHEAD |
712 | #if !HAVE_READAHEAD |
553 | # define readahead aio_readahead |
713 | # define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) |
554 | |
714 | |
555 | static ssize_t readahead (int fd, off_t offset, size_t count) |
715 | static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) |
556 | { |
716 | { |
557 | char readahead_buf[4096]; |
717 | dBUF; |
558 | |
718 | |
559 | while (count > 0) |
719 | while (count > 0) |
560 | { |
720 | { |
561 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
721 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
562 | |
722 | |
563 | pread (fd, readahead_buf, len, offset); |
723 | pread (fd, aio_buf, len, offset); |
564 | offset += len; |
724 | offset += len; |
565 | count -= len; |
725 | count -= len; |
566 | } |
726 | } |
567 | |
727 | |
568 | errno = 0; |
728 | errno = 0; |
569 | } |
729 | } |
|
|
730 | |
570 | #endif |
731 | #endif |
571 | |
732 | |
572 | #if !HAVE_READDIR_R |
733 | #if !HAVE_READDIR_R |
573 | # define readdir_r aio_readdir_r |
734 | # define readdir_r aio_readdir_r |
574 | |
735 | |
… | |
… | |
577 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
738 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
578 | { |
739 | { |
579 | struct dirent *e; |
740 | struct dirent *e; |
580 | int errorno; |
741 | int errorno; |
581 | |
742 | |
582 | pthread_mutex_lock (&readdirlock); |
743 | LOCK (readdirlock); |
583 | |
744 | |
584 | e = readdir (dirp); |
745 | e = readdir (dirp); |
585 | errorno = errno; |
746 | errorno = errno; |
586 | |
747 | |
587 | if (e) |
748 | if (e) |
… | |
… | |
590 | strcpy (ent->d_name, e->d_name); |
751 | strcpy (ent->d_name, e->d_name); |
591 | } |
752 | } |
592 | else |
753 | else |
593 | *res = 0; |
754 | *res = 0; |
594 | |
755 | |
595 | pthread_mutex_unlock (&readdirlock); |
756 | UNLOCK (readdirlock); |
596 | |
757 | |
597 | errno = errorno; |
758 | errno = errorno; |
598 | return e ? 0 : -1; |
759 | return e ? 0 : -1; |
599 | } |
760 | } |
600 | #endif |
761 | #endif |
601 | |
762 | |
602 | /* sendfile always needs emulation */ |
763 | /* sendfile always needs emulation */ |
603 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
764 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) |
604 | { |
765 | { |
605 | ssize_t res; |
766 | ssize_t res; |
606 | |
767 | |
607 | if (!count) |
768 | if (!count) |
608 | return 0; |
769 | return 0; |
… | |
… | |
619 | { |
780 | { |
620 | off_t sbytes; |
781 | off_t sbytes; |
621 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
782 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
622 | |
783 | |
623 | if (res < 0 && sbytes) |
784 | if (res < 0 && sbytes) |
624 | /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ |
785 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
625 | res = sbytes; |
786 | res = sbytes; |
626 | } |
787 | } |
627 | |
788 | |
628 | # elif __hpux |
789 | # elif __hpux |
629 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
790 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
… | |
… | |
657 | #endif |
818 | #endif |
658 | ) |
819 | ) |
659 | ) |
820 | ) |
660 | { |
821 | { |
661 | /* emulate sendfile. this is a major pain in the ass */ |
822 | /* emulate sendfile. this is a major pain in the ass */ |
662 | char buf[4096]; |
823 | dBUF; |
|
|
824 | |
663 | res = 0; |
825 | res = 0; |
664 | |
826 | |
665 | while (count) |
827 | while (count) |
666 | { |
828 | { |
667 | ssize_t cnt; |
829 | ssize_t cnt; |
668 | |
830 | |
669 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
831 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
670 | |
832 | |
671 | if (cnt <= 0) |
833 | if (cnt <= 0) |
672 | { |
834 | { |
673 | if (cnt && !res) res = -1; |
835 | if (cnt && !res) res = -1; |
674 | break; |
836 | break; |
675 | } |
837 | } |
676 | |
838 | |
677 | cnt = write (ofd, buf, cnt); |
839 | cnt = write (ofd, aio_buf, cnt); |
678 | |
840 | |
679 | if (cnt <= 0) |
841 | if (cnt <= 0) |
680 | { |
842 | { |
681 | if (cnt && !res) res = -1; |
843 | if (cnt && !res) res = -1; |
682 | break; |
844 | break; |
… | |
… | |
690 | |
852 | |
691 | return res; |
853 | return res; |
692 | } |
854 | } |
693 | |
855 | |
694 | /* read a full directory */ |
856 | /* read a full directory */ |
695 | static int scandir_ (const char *path, void **namesp) |
857 | static void scandir_ (aio_req req, worker *self) |
696 | { |
858 | { |
697 | DIR *dirp = opendir (path); |
859 | DIR *dirp; |
698 | union |
860 | union |
699 | { |
861 | { |
700 | struct dirent d; |
862 | struct dirent d; |
701 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
863 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
702 | } u; |
864 | } *u; |
703 | struct dirent *entp; |
865 | struct dirent *entp; |
704 | char *name, *names; |
866 | char *name, *names; |
705 | int memlen = 4096; |
867 | int memlen = 4096; |
706 | int memofs = 0; |
868 | int memofs = 0; |
707 | int res = 0; |
869 | int res = 0; |
708 | int errorno; |
870 | int errorno; |
709 | |
871 | |
710 | if (!dirp) |
872 | LOCK (wrklock); |
711 | return -1; |
873 | self->dirp = dirp = opendir (req->dataptr); |
712 | |
874 | self->dbuf = u = malloc (sizeof (*u)); |
713 | names = malloc (memlen); |
875 | req->data2ptr = names = malloc (memlen); |
|
|
876 | UNLOCK (wrklock); |
714 | |
877 | |
|
|
878 | if (dirp && u && names) |
715 | for (;;) |
879 | for (;;) |
716 | { |
880 | { |
|
|
881 | errno = 0; |
717 | errno = 0, readdir_r (dirp, &u.d, &entp); |
882 | readdir_r (dirp, &u->d, &entp); |
718 | |
883 | |
719 | if (!entp) |
884 | if (!entp) |
720 | break; |
885 | break; |
721 | |
886 | |
722 | name = entp->d_name; |
887 | name = entp->d_name; |
723 | |
888 | |
724 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
889 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
725 | { |
890 | { |
726 | int len = strlen (name) + 1; |
891 | int len = strlen (name) + 1; |
727 | |
892 | |
728 | res++; |
893 | res++; |
729 | |
894 | |
730 | while (memofs + len > memlen) |
895 | while (memofs + len > memlen) |
731 | { |
896 | { |
732 | memlen *= 2; |
897 | memlen *= 2; |
|
|
898 | LOCK (wrklock); |
733 | names = realloc (names, memlen); |
899 | req->data2ptr = names = realloc (names, memlen); |
|
|
900 | UNLOCK (wrklock); |
|
|
901 | |
734 | if (!names) |
902 | if (!names) |
735 | break; |
903 | break; |
736 | } |
904 | } |
737 | |
905 | |
738 | memcpy (names + memofs, name, len); |
906 | memcpy (names + memofs, name, len); |
739 | memofs += len; |
907 | memofs += len; |
740 | } |
908 | } |
741 | } |
909 | } |
742 | |
910 | |
743 | errorno = errno; |
|
|
744 | closedir (dirp); |
|
|
745 | |
|
|
746 | if (errorno) |
911 | if (errno) |
747 | { |
|
|
748 | free (names); |
|
|
749 | errno = errorno; |
|
|
750 | res = -1; |
912 | res = -1; |
751 | } |
913 | |
752 | |
914 | req->result = res; |
753 | *namesp = (void *)names; |
|
|
754 | return res; |
|
|
755 | } |
915 | } |
756 | |
916 | |
757 | /*****************************************************************************/ |
917 | /*****************************************************************************/ |
758 | |
918 | |
759 | static void *aio_proc (void *thr_arg) |
919 | static void *aio_proc (void *thr_arg) |
760 | { |
920 | { |
761 | aio_req req; |
921 | aio_req req; |
762 | int type; |
922 | int type; |
|
|
923 | worker *self = (worker *)thr_arg; |
763 | |
924 | |
764 | do |
925 | do |
765 | { |
926 | { |
766 | pthread_mutex_lock (&reqlock); |
927 | LOCK (reqlock); |
767 | |
928 | |
768 | for (;;) |
929 | for (;;) |
769 | { |
930 | { |
770 | req = reqs; |
931 | self->req = req = reqq_shift (&req_queue); |
771 | |
|
|
772 | if (reqs) |
|
|
773 | { |
|
|
774 | reqs = reqs->next; |
|
|
775 | if (!reqs) reqe = 0; |
|
|
776 | } |
|
|
777 | |
932 | |
778 | if (req) |
933 | if (req) |
779 | break; |
934 | break; |
780 | |
935 | |
781 | pthread_cond_wait (&reqwait, &reqlock); |
936 | pthread_cond_wait (&reqwait, &reqlock); |
782 | } |
937 | } |
783 | |
938 | |
784 | pthread_mutex_unlock (&reqlock); |
939 | UNLOCK (reqlock); |
785 | |
940 | |
786 | errno = 0; /* strictly unnecessary */ |
941 | errno = 0; /* strictly unnecessary */ |
787 | |
|
|
788 | if (!req->cancelled) |
|
|
789 | switch (type = req->type) /* remember type for QUIT check */ |
942 | type = req->type; /* remember type for QUIT check */ |
|
|
943 | |
|
|
944 | if (!(req->flags & FLAG_CANCELLED)) |
|
|
945 | switch (type) |
790 | { |
946 | { |
791 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
947 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
792 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
948 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
793 | |
949 | |
794 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
950 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
795 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; |
951 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break; |
796 | |
952 | |
797 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
953 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
798 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
954 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
799 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
955 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
800 | |
956 | |
… | |
… | |
806 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
962 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
807 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
963 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
808 | |
964 | |
809 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
965 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
810 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
966 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
811 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
967 | case REQ_READDIR: scandir_ (req, self); break; |
812 | |
968 | |
813 | case REQ_SLEEP: |
969 | case REQ_BUSY: |
814 | { |
970 | { |
815 | struct timeval tv; |
971 | struct timeval tv; |
816 | |
972 | |
817 | tv.tv_sec = req->fd; |
973 | tv.tv_sec = req->fd; |
818 | tv.tv_usec = req->fd2; |
974 | tv.tv_usec = req->fd2; |
819 | |
975 | |
820 | req->result = select (0, 0, 0, 0, &tv); |
976 | req->result = select (0, 0, 0, 0, &tv); |
821 | } |
977 | } |
822 | |
978 | |
|
|
979 | case REQ_GROUP: |
|
|
980 | case REQ_NOP: |
823 | case REQ_QUIT: |
981 | case REQ_QUIT: |
824 | break; |
982 | break; |
825 | |
983 | |
826 | default: |
984 | default: |
827 | req->result = ENOSYS; |
985 | req->result = ENOSYS; |
828 | break; |
986 | break; |
829 | } |
987 | } |
830 | |
988 | |
831 | req->errorno = errno; |
989 | req->errorno = errno; |
832 | |
990 | |
833 | pthread_mutex_lock (&reslock); |
991 | LOCK (reslock); |
834 | |
992 | |
835 | req->next = 0; |
993 | if (!reqq_push (&res_queue, req)) |
836 | |
|
|
837 | if (rese) |
|
|
838 | { |
|
|
839 | rese->next = req; |
|
|
840 | rese = req; |
|
|
841 | } |
|
|
842 | else |
|
|
843 | { |
|
|
844 | rese = ress = req; |
|
|
845 | |
|
|
846 | /* write a dummy byte to the pipe so fh becomes ready */ |
994 | /* write a dummy byte to the pipe so fh becomes ready */ |
847 | write (respipe [1], &respipe, 1); |
995 | write (respipe [1], &respipe, 1); |
848 | } |
|
|
849 | |
996 | |
850 | pthread_mutex_unlock (&reslock); |
997 | self->req = 0; |
|
|
998 | worker_clear (self); |
|
|
999 | |
|
|
1000 | UNLOCK (reslock); |
851 | } |
1001 | } |
852 | while (type != REQ_QUIT); |
1002 | while (type != REQ_QUIT); |
853 | |
1003 | |
|
|
1004 | LOCK (wrklock); |
|
|
1005 | worker_free (self); |
|
|
1006 | UNLOCK (wrklock); |
|
|
1007 | |
854 | return 0; |
1008 | return 0; |
855 | } |
1009 | } |
856 | |
1010 | |
857 | /*****************************************************************************/ |
1011 | /*****************************************************************************/ |
858 | |
1012 | |
859 | static void atfork_prepare (void) |
1013 | static void atfork_prepare (void) |
860 | { |
1014 | { |
861 | pthread_mutex_lock (&reqlock); |
1015 | LOCK (wrklock); |
862 | pthread_mutex_lock (&reslock); |
1016 | LOCK (reqlock); |
|
|
1017 | LOCK (reslock); |
863 | #if !HAVE_PREADWRITE |
1018 | #if !HAVE_PREADWRITE |
864 | pthread_mutex_lock (&preadwritelock); |
1019 | LOCK (preadwritelock); |
865 | #endif |
1020 | #endif |
866 | #if !HAVE_READDIR_R |
1021 | #if !HAVE_READDIR_R |
867 | pthread_mutex_lock (&readdirlock); |
1022 | LOCK (readdirlock); |
868 | #endif |
1023 | #endif |
869 | } |
1024 | } |
870 | |
1025 | |
871 | static void atfork_parent (void) |
1026 | static void atfork_parent (void) |
872 | { |
1027 | { |
873 | #if !HAVE_READDIR_R |
1028 | #if !HAVE_READDIR_R |
874 | pthread_mutex_unlock (&readdirlock); |
1029 | UNLOCK (readdirlock); |
875 | #endif |
1030 | #endif |
876 | #if !HAVE_PREADWRITE |
1031 | #if !HAVE_PREADWRITE |
877 | pthread_mutex_unlock (&preadwritelock); |
1032 | UNLOCK (preadwritelock); |
878 | #endif |
1033 | #endif |
879 | pthread_mutex_unlock (&reslock); |
1034 | UNLOCK (reslock); |
880 | pthread_mutex_unlock (&reqlock); |
1035 | UNLOCK (reqlock); |
|
|
1036 | UNLOCK (wrklock); |
881 | } |
1037 | } |
882 | |
1038 | |
883 | static void atfork_child (void) |
1039 | static void atfork_child (void) |
884 | { |
1040 | { |
885 | aio_req prv; |
1041 | aio_req prv; |
886 | |
1042 | |
|
|
1043 | while (prv = reqq_shift (&req_queue)) |
|
|
1044 | req_free (prv); |
|
|
1045 | |
|
|
1046 | while (prv = reqq_shift (&res_queue)) |
|
|
1047 | req_free (prv); |
|
|
1048 | |
|
|
1049 | while (wrk_first.next != &wrk_first) |
|
|
1050 | { |
|
|
1051 | worker *wrk = wrk_first.next; |
|
|
1052 | |
|
|
1053 | if (wrk->req) |
|
|
1054 | req_free (wrk->req); |
|
|
1055 | |
|
|
1056 | worker_clear (wrk); |
|
|
1057 | worker_free (wrk); |
|
|
1058 | } |
|
|
1059 | |
887 | started = 0; |
1060 | started = 0; |
888 | |
1061 | nreqs = 0; |
889 | while (reqs) |
|
|
890 | { |
|
|
891 | prv = reqs; |
|
|
892 | reqs = prv->next; |
|
|
893 | req_free (prv); |
|
|
894 | } |
|
|
895 | |
|
|
896 | reqs = reqe = 0; |
|
|
897 | |
|
|
898 | while (ress) |
|
|
899 | { |
|
|
900 | prv = ress; |
|
|
901 | ress = prv->next; |
|
|
902 | req_free (prv); |
|
|
903 | } |
|
|
904 | |
|
|
905 | ress = rese = 0; |
|
|
906 | |
1062 | |
907 | close (respipe [0]); |
1063 | close (respipe [0]); |
908 | close (respipe [1]); |
1064 | close (respipe [1]); |
909 | create_pipe (); |
1065 | create_pipe (); |
910 | |
1066 | |
911 | atfork_parent (); |
1067 | atfork_parent (); |
912 | } |
1068 | } |
913 | |
1069 | |
914 | #define dREQ \ |
1070 | #define dREQ \ |
915 | aio_req req; \ |
1071 | aio_req req; \ |
|
|
1072 | int req_pri = next_pri; \ |
|
|
1073 | next_pri = DEFAULT_PRI + PRI_BIAS; \ |
916 | \ |
1074 | \ |
917 | if (SvOK (callback) && !SvROK (callback)) \ |
1075 | if (SvOK (callback) && !SvROK (callback)) \ |
918 | croak ("callback must be undef or of reference type"); \ |
1076 | croak ("callback must be undef or of reference type"); \ |
919 | \ |
1077 | \ |
920 | Newz (0, req, 1, aio_cb); \ |
1078 | Newz (0, req, 1, aio_cb); \ |
921 | if (!req) \ |
1079 | if (!req) \ |
922 | croak ("out of memory during aio_req allocation"); \ |
1080 | croak ("out of memory during aio_req allocation"); \ |
923 | \ |
1081 | \ |
924 | req->callback = newSVsv (callback) |
1082 | req->callback = newSVsv (callback); \ |
|
|
1083 | req->pri = req_pri |
925 | |
1084 | |
926 | #define REQ_SEND \ |
1085 | #define REQ_SEND \ |
927 | req_send (req); \ |
1086 | req_send (req); \ |
928 | \ |
1087 | \ |
929 | if (GIMME_V != G_VOID) \ |
1088 | if (GIMME_V != G_VOID) \ |
… | |
… | |
951 | |
1110 | |
952 | void |
1111 | void |
953 | max_parallel (nthreads) |
1112 | max_parallel (nthreads) |
954 | int nthreads |
1113 | int nthreads |
955 | PROTOTYPE: $ |
1114 | PROTOTYPE: $ |
956 | |
|
|
957 | int |
|
|
958 | max_outstanding (nreqs) |
|
|
959 | int nreqs |
|
|
960 | PROTOTYPE: $ |
|
|
961 | CODE: |
|
|
962 | RETVAL = max_outstanding; |
|
|
963 | max_outstanding = nreqs; |
|
|
964 | |
1115 | |
965 | void |
1116 | void |
966 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
1117 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
967 | SV * pathname |
1118 | SV * pathname |
968 | int flags |
1119 | int flags |
… | |
… | |
1183 | |
1334 | |
1184 | REQ_SEND; |
1335 | REQ_SEND; |
1185 | } |
1336 | } |
1186 | |
1337 | |
1187 | void |
1338 | void |
1188 | aio_sleep (delay,callback=&PL_sv_undef) |
1339 | aio_busy (delay,callback=&PL_sv_undef) |
1189 | double delay |
1340 | double delay |
1190 | SV * callback |
1341 | SV * callback |
1191 | PPCODE: |
1342 | PPCODE: |
1192 | { |
1343 | { |
1193 | dREQ; |
1344 | dREQ; |
1194 | |
1345 | |
1195 | req->type = REQ_SLEEP; |
1346 | req->type = REQ_BUSY; |
1196 | req->fd = delay < 0. ? 0 : delay; |
1347 | req->fd = delay < 0. ? 0 : delay; |
1197 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1348 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1198 | |
1349 | |
1199 | REQ_SEND; |
1350 | REQ_SEND; |
1200 | } |
1351 | } |
… | |
… | |
1204 | SV * callback |
1355 | SV * callback |
1205 | PROTOTYPE: ;$ |
1356 | PROTOTYPE: ;$ |
1206 | PPCODE: |
1357 | PPCODE: |
1207 | { |
1358 | { |
1208 | dREQ; |
1359 | dREQ; |
|
|
1360 | |
1209 | req->type = REQ_GROUP; |
1361 | req->type = REQ_GROUP; |
1210 | req_send (req); |
1362 | req_send (req); |
|
|
1363 | |
1211 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1364 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1212 | } |
1365 | } |
|
|
1366 | |
|
|
1367 | void |
|
|
1368 | aio_nop (callback=&PL_sv_undef) |
|
|
1369 | SV * callback |
|
|
1370 | PPCODE: |
|
|
1371 | { |
|
|
1372 | dREQ; |
|
|
1373 | |
|
|
1374 | req->type = REQ_NOP; |
|
|
1375 | |
|
|
1376 | REQ_SEND; |
|
|
1377 | } |
|
|
1378 | |
|
|
1379 | void |
|
|
1380 | aioreq_pri (int pri = DEFAULT_PRI) |
|
|
1381 | CODE: |
|
|
1382 | if (pri < PRI_MIN) pri = PRI_MIN; |
|
|
1383 | if (pri > PRI_MAX) pri = PRI_MAX; |
|
|
1384 | next_pri = pri + PRI_BIAS; |
|
|
1385 | |
|
|
1386 | void |
|
|
1387 | aioreq_nice (int nice = 0) |
|
|
1388 | CODE: |
|
|
1389 | nice = next_pri - nice; |
|
|
1390 | if (nice < PRI_MIN) nice = PRI_MIN; |
|
|
1391 | if (nice > PRI_MAX) nice = PRI_MAX; |
|
|
1392 | next_pri = nice + PRI_BIAS; |
1213 | |
1393 | |
1214 | void |
1394 | void |
1215 | flush () |
1395 | flush () |
1216 | PROTOTYPE: |
1396 | PROTOTYPE: |
1217 | CODE: |
1397 | CODE: |
1218 | while (nreqs) |
1398 | while (nreqs) |
1219 | { |
1399 | { |
1220 | poll_wait (); |
1400 | poll_wait (); |
1221 | poll_cb (); |
1401 | poll_cb (0); |
1222 | } |
1402 | } |
1223 | |
1403 | |
1224 | void |
1404 | void |
1225 | poll() |
1405 | poll() |
1226 | PROTOTYPE: |
1406 | PROTOTYPE: |
1227 | CODE: |
1407 | CODE: |
1228 | if (nreqs) |
1408 | if (nreqs) |
1229 | { |
1409 | { |
1230 | poll_wait (); |
1410 | poll_wait (); |
1231 | poll_cb (); |
1411 | poll_cb (0); |
1232 | } |
1412 | } |
1233 | |
1413 | |
1234 | int |
1414 | int |
1235 | poll_fileno() |
1415 | poll_fileno() |
1236 | PROTOTYPE: |
1416 | PROTOTYPE: |
… | |
… | |
1241 | |
1421 | |
1242 | int |
1422 | int |
1243 | poll_cb(...) |
1423 | poll_cb(...) |
1244 | PROTOTYPE: |
1424 | PROTOTYPE: |
1245 | CODE: |
1425 | CODE: |
1246 | RETVAL = poll_cb (); |
1426 | RETVAL = poll_cb (0); |
|
|
1427 | OUTPUT: |
|
|
1428 | RETVAL |
|
|
1429 | |
|
|
1430 | int |
|
|
1431 | poll_some(int max = 0) |
|
|
1432 | PROTOTYPE: $ |
|
|
1433 | CODE: |
|
|
1434 | RETVAL = poll_cb (max); |
1247 | OUTPUT: |
1435 | OUTPUT: |
1248 | RETVAL |
1436 | RETVAL |
1249 | |
1437 | |
1250 | void |
1438 | void |
1251 | poll_wait() |
1439 | poll_wait() |
… | |
… | |
1266 | |
1454 | |
1267 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1455 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1268 | |
1456 | |
1269 | void |
1457 | void |
1270 | cancel (aio_req_ornot req) |
1458 | cancel (aio_req_ornot req) |
1271 | PROTOTYPE: |
|
|
1272 | CODE: |
1459 | CODE: |
1273 | req_cancel (req); |
1460 | req_cancel (req); |
1274 | |
1461 | |
|
|
1462 | void |
|
|
1463 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
|
|
1464 | CODE: |
|
|
1465 | SvREFCNT_dec (req->callback); |
|
|
1466 | req->callback = newSVsv (callback); |
|
|
1467 | |
1275 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
1468 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
1276 | |
1469 | |
1277 | void |
1470 | void |
1278 | add (aio_req grp, ...) |
1471 | add (aio_req grp, ...) |
1279 | PPCODE: |
1472 | PPCODE: |
1280 | { |
1473 | { |
1281 | int i; |
1474 | int i; |
|
|
1475 | aio_req req; |
1282 | |
1476 | |
1283 | if (grp->fd == 2) |
1477 | if (grp->fd == 2) |
1284 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
1478 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
1285 | |
1479 | |
1286 | for (i = 1; i < items; ++i ) |
1480 | for (i = 1; i < items; ++i ) |
1287 | { |
1481 | { |
1288 | if (GIMME_V != G_VOID) |
1482 | if (GIMME_V != G_VOID) |
1289 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
1483 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
1290 | |
1484 | |
1291 | aio_req req = SvAIO_REQ (ST (i)); |
1485 | req = SvAIO_REQ (ST (i)); |
1292 | |
1486 | |
1293 | if (req) |
1487 | if (req) |
1294 | { |
1488 | { |
1295 | ++grp->length; |
1489 | ++grp->length; |
1296 | req->grp = grp; |
1490 | req->grp = grp; |
… | |
… | |
1305 | } |
1499 | } |
1306 | } |
1500 | } |
1307 | } |
1501 | } |
1308 | |
1502 | |
1309 | void |
1503 | void |
|
|
1504 | cancel_subs (aio_req_ornot req) |
|
|
1505 | CODE: |
|
|
1506 | req_cancel_subs (req); |
|
|
1507 | |
|
|
1508 | void |
1310 | result (aio_req grp, ...) |
1509 | result (aio_req grp, ...) |
1311 | CODE: |
1510 | CODE: |
1312 | { |
1511 | { |
1313 | int i; |
1512 | int i; |
1314 | AV *av = newAV (); |
1513 | AV *av = newAV (); |
… | |
… | |
1319 | SvREFCNT_dec (grp->data); |
1518 | SvREFCNT_dec (grp->data); |
1320 | grp->data = (SV *)av; |
1519 | grp->data = (SV *)av; |
1321 | } |
1520 | } |
1322 | |
1521 | |
1323 | void |
1522 | void |
1324 | lock (aio_req grp) |
|
|
1325 | CODE: |
|
|
1326 | ++grp->length; |
|
|
1327 | |
|
|
1328 | void |
|
|
1329 | unlock (aio_req grp) |
|
|
1330 | CODE: |
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|
1331 | aio_grp_dec (grp); |
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1332 | |
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1333 | void |
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1334 | feeder_limit (aio_req grp, int limit) |
1523 | limit (aio_req grp, int limit) |
1335 | CODE: |
1524 | CODE: |
1336 | grp->fd2 = limit; |
1525 | grp->fd2 = limit; |
1337 | aio_grp_feed (grp); |
1526 | aio_grp_feed (grp); |
1338 | |
1527 | |
1339 | void |
1528 | void |
1340 | set_feeder (aio_req grp, SV *callback=&PL_sv_undef) |
1529 | feed (aio_req grp, SV *callback=&PL_sv_undef) |
1341 | CODE: |
1530 | CODE: |
1342 | { |
1531 | { |
1343 | SvREFCNT_dec (grp->fh2); |
1532 | SvREFCNT_dec (grp->fh2); |
1344 | grp->fh2 = newSVsv (callback); |
1533 | grp->fh2 = newSVsv (callback); |
1345 | |
1534 | |