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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, |
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… | |
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 *grp, *grp_prev, *grp_next; |
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70 | |
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71 | struct aio_cb *volatile next; |
96 | struct aio_cb *volatile next; |
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); |
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249 | static void req_invoke (aio_req req); |
106 | 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); |
107 | |
252 | |
108 | /* must be called at most once */ |
253 | /* must be called at most once */ |
109 | static SV *req_sv (aio_req req, const char *klass) |
254 | static SV *req_sv (aio_req req, const char *klass) |
110 | { |
255 | { |
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256 | if (!req->self) |
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257 | { |
111 | req->self = (SV *)newHV (); |
258 | req->self = (SV *)newHV (); |
112 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
259 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
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260 | } |
113 | |
261 | |
114 | 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))); |
115 | } |
263 | } |
116 | |
264 | |
117 | static aio_req SvAIO_REQ (SV *sv) |
265 | static aio_req SvAIO_REQ (SV *sv) |
118 | { |
266 | { |
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267 | MAGIC *mg; |
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268 | |
119 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
269 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
120 | croak ("object of class " AIO_REQ_KLASS " expected"); |
270 | croak ("object of class " AIO_REQ_KLASS " expected"); |
121 | |
271 | |
122 | MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
272 | mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
123 | |
273 | |
124 | return mg ? (aio_req)mg->mg_ptr : 0; |
274 | return mg ? (aio_req)mg->mg_ptr : 0; |
125 | } |
275 | } |
126 | |
276 | |
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277 | static void aio_grp_feed (aio_req grp) |
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278 | { |
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279 | while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) |
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280 | { |
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281 | int old_len = grp->length; |
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282 | |
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283 | if (grp->fh2 && SvOK (grp->fh2)) |
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284 | { |
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285 | dSP; |
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286 | |
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287 | ENTER; |
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288 | SAVETMPS; |
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289 | PUSHMARK (SP); |
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290 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
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291 | PUTBACK; |
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292 | call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); |
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293 | SPAGAIN; |
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294 | FREETMPS; |
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295 | LEAVE; |
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296 | } |
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297 | |
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298 | /* stop if no progress has been made */ |
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299 | if (old_len == grp->length) |
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300 | { |
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301 | SvREFCNT_dec (grp->fh2); |
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302 | grp->fh2 = 0; |
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303 | break; |
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304 | } |
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305 | } |
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306 | } |
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307 | |
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308 | static void aio_grp_dec (aio_req grp) |
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309 | { |
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310 | --grp->length; |
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311 | |
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312 | /* call feeder, if applicable */ |
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313 | aio_grp_feed (grp); |
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314 | |
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315 | /* finish, if done */ |
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316 | if (!grp->length && grp->fd) |
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317 | { |
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318 | req_invoke (grp); |
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319 | req_free (grp); |
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320 | } |
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321 | } |
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322 | |
127 | static void poll_wait () |
323 | static void poll_wait () |
128 | { |
324 | { |
129 | if (nreqs && !ress) |
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130 | { |
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131 | 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 | |
132 | FD_ZERO(&rfd); |
341 | FD_ZERO(&rfd); |
133 | FD_SET(respipe [0], &rfd); |
342 | FD_SET(respipe [0], &rfd); |
134 | |
343 | |
135 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
344 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
136 | } |
345 | } |
137 | } |
346 | } |
138 | |
347 | |
139 | static void req_invoke (aio_req req) |
348 | static void req_invoke (aio_req req) |
140 | { |
349 | { |
141 | dSP; |
350 | dSP; |
142 | int errorno = errno; |
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143 | |
351 | |
144 | if (req->cancelled || !SvOK (req->callback)) |
352 | if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
145 | return; |
353 | { |
146 | |
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147 | errno = req->errorno; |
354 | errno = req->errorno; |
148 | |
355 | |
149 | ENTER; |
356 | ENTER; |
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357 | SAVETMPS; |
150 | PUSHMARK (SP); |
358 | PUSHMARK (SP); |
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359 | EXTEND (SP, 1); |
151 | |
360 | |
152 | switch (req->type) |
361 | switch (req->type) |
153 | { |
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154 | case REQ_READDIR: |
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155 | { |
362 | { |
156 | SV *rv = &PL_sv_undef; |
363 | case REQ_READDIR: |
157 | |
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158 | if (req->result >= 0) |
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159 | { |
364 | { |
160 | char *buf = req->data2ptr; |
365 | SV *rv = &PL_sv_undef; |
161 | AV *av = newAV (); |
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162 | |
366 | |
163 | while (req->result) |
367 | if (req->result >= 0) |
164 | { |
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 | { |
165 | SV *sv = newSVpv (buf, 0); |
377 | SV *sv = newSVpv (buf, 0); |
166 | |
378 | |
167 | av_push (av, sv); |
379 | av_store (av, i, sv); |
168 | buf += SvCUR (sv) + 1; |
380 | buf += SvCUR (sv) + 1; |
169 | req->result--; |
381 | } |
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382 | |
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383 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
170 | } |
384 | } |
171 | |
385 | |
172 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
386 | PUSHs (rv); |
173 | } |
387 | } |
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388 | break; |
174 | |
389 | |
175 | XPUSHs (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; |
176 | } |
428 | } |
177 | break; |
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178 | |
429 | |
179 | case REQ_OPEN: |
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180 | { |
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181 | /* convert fd to fh */ |
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182 | SV *fh; |
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183 | |
430 | |
184 | XPUSHs (sv_2mortal (newSViv (req->result))); |
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185 | PUTBACK; |
431 | PUTBACK; |
186 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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187 | SPAGAIN; |
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188 | |
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189 | fh = SvREFCNT_inc (POPs); |
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190 | |
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191 | PUSHMARK (SP); |
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192 | XPUSHs (sv_2mortal (fh)); |
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193 | } |
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|
194 | break; |
|
|
195 | |
|
|
196 | case REQ_SLEEP: |
|
|
197 | case REQ_GROUP: |
|
|
198 | break; |
|
|
199 | |
|
|
200 | default: |
|
|
201 | XPUSHs (sv_2mortal (newSViv (req->result))); |
|
|
202 | break; |
|
|
203 | } |
|
|
204 | |
|
|
205 | |
|
|
206 | PUTBACK; |
|
|
207 | call_sv (req->callback, G_VOID | G_EVAL); |
432 | call_sv (req->callback, G_VOID | G_EVAL); |
208 | SPAGAIN; |
433 | SPAGAIN; |
|
|
434 | |
|
|
435 | FREETMPS; |
|
|
436 | LEAVE; |
|
|
437 | } |
|
|
438 | |
|
|
439 | if (req->grp) |
|
|
440 | { |
|
|
441 | aio_req grp = req->grp; |
|
|
442 | |
|
|
443 | /* unlink request */ |
|
|
444 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
|
|
445 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
|
|
446 | |
|
|
447 | if (grp->grp_first == req) |
|
|
448 | grp->grp_first = req->grp_next; |
|
|
449 | |
|
|
450 | aio_grp_dec (grp); |
|
|
451 | } |
209 | |
452 | |
210 | if (SvTRUE (ERRSV)) |
453 | if (SvTRUE (ERRSV)) |
211 | { |
454 | { |
212 | req_free (req); |
455 | req_free (req); |
213 | croak (0); |
456 | croak (0); |
214 | } |
457 | } |
215 | |
|
|
216 | LEAVE; |
|
|
217 | |
|
|
218 | errno = errorno; |
|
|
219 | } |
458 | } |
220 | |
459 | |
221 | static void req_free (aio_req req) |
460 | static void req_free (aio_req req) |
222 | { |
461 | { |
223 | if (req->grp) |
|
|
224 | { |
|
|
225 | aio_req grp = req->grp; |
|
|
226 | |
|
|
227 | /* unlink request */ |
|
|
228 | req->grp_next->grp_prev = req->grp_prev; |
|
|
229 | req->grp_prev->grp_next = req->grp_next; |
|
|
230 | |
|
|
231 | if (grp->grp_next == grp && grp->fd) |
|
|
232 | { |
|
|
233 | req_invoke (grp); |
|
|
234 | req_free (grp); |
|
|
235 | } |
|
|
236 | } |
|
|
237 | |
|
|
238 | if (req->self) |
462 | if (req->self) |
239 | { |
463 | { |
240 | sv_unmagic (req->self, PERL_MAGIC_ext); |
464 | sv_unmagic (req->self, PERL_MAGIC_ext); |
241 | SvREFCNT_dec (req->self); |
465 | SvREFCNT_dec (req->self); |
242 | } |
466 | } |
243 | |
467 | |
244 | if (req->data) |
|
|
245 | SvREFCNT_dec (req->data); |
468 | SvREFCNT_dec (req->data); |
246 | |
|
|
247 | if (req->fh) |
|
|
248 | SvREFCNT_dec (req->fh); |
469 | SvREFCNT_dec (req->fh); |
249 | |
|
|
250 | if (req->fh2) |
|
|
251 | SvREFCNT_dec (req->fh2); |
470 | SvREFCNT_dec (req->fh2); |
252 | |
|
|
253 | if (req->statdata) |
|
|
254 | Safefree (req->statdata); |
|
|
255 | |
|
|
256 | if (req->callback) |
|
|
257 | SvREFCNT_dec (req->callback); |
471 | SvREFCNT_dec (req->callback); |
|
|
472 | Safefree (req->statdata); |
258 | |
473 | |
259 | if (req->type == REQ_READDIR && req->result >= 0) |
474 | if (req->type == REQ_READDIR) |
260 | free (req->data2ptr); |
475 | free (req->data2ptr); |
261 | |
476 | |
262 | Safefree (req); |
477 | Safefree (req); |
263 | } |
478 | } |
264 | |
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 | |
265 | static void req_cancel (aio_req req) |
494 | static void req_cancel (aio_req req) |
266 | { |
495 | { |
267 | req->cancelled = 1; |
496 | req->flags |= FLAG_CANCELLED; |
268 | |
497 | |
269 | if (req->type == REQ_GROUP) |
498 | req_cancel_subs (req); |
270 | { |
|
|
271 | aio_req sub; |
|
|
272 | |
|
|
273 | for (sub = req->grp_next; sub != req; sub = sub->grp_next) |
|
|
274 | req_cancel (sub); |
|
|
275 | } |
|
|
276 | } |
499 | } |
277 | |
500 | |
278 | static int poll_cb () |
501 | static int poll_cb (int max) |
279 | { |
502 | { |
280 | dSP; |
503 | dSP; |
281 | int count = 0; |
504 | int count = 0; |
282 | int do_croak = 0; |
505 | int do_croak = 0; |
283 | aio_req req; |
506 | aio_req req; |
284 | |
507 | |
285 | for (;;) |
508 | while (max <= 0 || count < max) |
286 | { |
509 | { |
287 | pthread_mutex_lock (&reslock); |
510 | LOCK (reslock); |
288 | req = ress; |
511 | req = reqq_shift (&res_queue); |
289 | |
512 | |
290 | if (req) |
513 | if (req) |
291 | { |
514 | { |
292 | ress = req->next; |
|
|
293 | |
|
|
294 | if (!ress) |
515 | if (!res_queue.size) |
295 | { |
516 | { |
296 | /* read any signals sent by the worker threads */ |
517 | /* read any signals sent by the worker threads */ |
297 | char buf [32]; |
518 | char buf [32]; |
298 | while (read (respipe [0], buf, 32) == 32) |
519 | while (read (respipe [0], buf, 32) == 32) |
299 | ; |
520 | ; |
300 | |
|
|
301 | rese = 0; |
|
|
302 | } |
521 | } |
303 | } |
522 | } |
304 | |
523 | |
305 | pthread_mutex_unlock (&reslock); |
524 | UNLOCK (reslock); |
306 | |
525 | |
307 | if (!req) |
526 | if (!req) |
308 | break; |
527 | break; |
309 | |
528 | |
310 | nreqs--; |
529 | --nreqs; |
311 | |
530 | |
312 | if (req->type == REQ_QUIT) |
531 | if (req->type == REQ_QUIT) |
313 | started--; |
532 | started--; |
314 | else if (req->type == REQ_GROUP && req->grp_next != req) |
533 | else if (req->type == REQ_GROUP && req->length) |
315 | { |
534 | { |
316 | req->fd = 1; /* mark request as delayed */ |
535 | req->fd = 1; /* mark request as delayed */ |
317 | continue; |
536 | continue; |
318 | } |
537 | } |
319 | else |
538 | else |
… | |
… | |
345 | static void *aio_proc(void *arg); |
564 | static void *aio_proc(void *arg); |
346 | |
565 | |
347 | static void start_thread (void) |
566 | static void start_thread (void) |
348 | { |
567 | { |
349 | sigset_t fullsigset, oldsigset; |
568 | sigset_t fullsigset, oldsigset; |
350 | pthread_t tid; |
|
|
351 | 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"); |
352 | |
575 | |
353 | pthread_attr_init (&attr); |
576 | pthread_attr_init (&attr); |
354 | pthread_attr_setstacksize (&attr, STACKSIZE); |
577 | pthread_attr_setstacksize (&attr, STACKSIZE); |
355 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
578 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
356 | |
579 | |
357 | sigfillset (&fullsigset); |
580 | sigfillset (&fullsigset); |
|
|
581 | |
|
|
582 | LOCK (wrklock); |
358 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
583 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
359 | |
584 | |
360 | 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; |
361 | started++; |
591 | started++; |
|
|
592 | } |
|
|
593 | else |
|
|
594 | free (wrk); |
362 | |
595 | |
363 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
596 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
|
|
597 | UNLOCK (wrklock); |
364 | } |
598 | } |
365 | |
599 | |
366 | static void req_send (aio_req req) |
600 | static void req_send (aio_req req) |
367 | { |
601 | { |
368 | while (started < wanted && nreqs >= started) |
602 | while (started < wanted && nreqs >= started) |
369 | start_thread (); |
603 | start_thread (); |
370 | |
604 | |
371 | nreqs++; |
605 | ++nreqs; |
372 | |
606 | |
373 | pthread_mutex_lock (&reqlock); |
607 | LOCK (reqlock); |
374 | |
608 | reqq_push (&req_queue, req); |
375 | req->next = 0; |
|
|
376 | |
|
|
377 | if (reqe) |
|
|
378 | { |
|
|
379 | reqe->next = req; |
|
|
380 | reqe = req; |
|
|
381 | } |
|
|
382 | else |
|
|
383 | reqe = reqs = req; |
|
|
384 | |
|
|
385 | pthread_cond_signal (&reqwait); |
609 | pthread_cond_signal (&reqwait); |
386 | pthread_mutex_unlock (&reqlock); |
610 | UNLOCK (reqlock); |
387 | |
|
|
388 | if (nreqs > max_outstanding) |
|
|
389 | for (;;) |
|
|
390 | { |
|
|
391 | poll_cb (); |
|
|
392 | |
|
|
393 | if (nreqs <= max_outstanding) |
|
|
394 | break; |
|
|
395 | |
|
|
396 | poll_wait (); |
|
|
397 | } |
|
|
398 | } |
611 | } |
399 | |
612 | |
400 | static void end_thread (void) |
613 | static void end_thread (void) |
401 | { |
614 | { |
402 | aio_req req; |
615 | aio_req req; |
|
|
616 | |
403 | Newz (0, req, 1, aio_cb); |
617 | Newz (0, req, 1, aio_cb); |
|
|
618 | |
404 | req->type = REQ_QUIT; |
619 | req->type = REQ_QUIT; |
|
|
620 | req->pri = PRI_MAX + PRI_BIAS; |
405 | |
621 | |
406 | req_send (req); |
622 | req_send (req); |
407 | } |
623 | } |
408 | |
624 | |
409 | static void min_parallel (int nthreads) |
625 | static void min_parallel (int nthreads) |
… | |
… | |
426 | } |
642 | } |
427 | |
643 | |
428 | while (started > wanted) |
644 | while (started > wanted) |
429 | { |
645 | { |
430 | poll_wait (); |
646 | poll_wait (); |
431 | poll_cb (); |
647 | poll_cb (0); |
432 | } |
648 | } |
433 | } |
649 | } |
434 | |
650 | |
435 | static void create_pipe () |
651 | static void create_pipe () |
436 | { |
652 | { |
… | |
… | |
461 | 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) |
462 | { |
678 | { |
463 | ssize_t res; |
679 | ssize_t res; |
464 | off_t ooffset; |
680 | off_t ooffset; |
465 | |
681 | |
466 | pthread_mutex_lock (&preadwritelock); |
682 | LOCK (preadwritelock); |
467 | ooffset = lseek (fd, 0, SEEK_CUR); |
683 | ooffset = lseek (fd, 0, SEEK_CUR); |
468 | lseek (fd, offset, SEEK_SET); |
684 | lseek (fd, offset, SEEK_SET); |
469 | res = read (fd, buf, count); |
685 | res = read (fd, buf, count); |
470 | lseek (fd, ooffset, SEEK_SET); |
686 | lseek (fd, ooffset, SEEK_SET); |
471 | pthread_mutex_unlock (&preadwritelock); |
687 | UNLOCK (preadwritelock); |
472 | |
688 | |
473 | return res; |
689 | return res; |
474 | } |
690 | } |
475 | |
691 | |
476 | 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) |
477 | { |
693 | { |
478 | ssize_t res; |
694 | ssize_t res; |
479 | off_t ooffset; |
695 | off_t ooffset; |
480 | |
696 | |
481 | pthread_mutex_lock (&preadwritelock); |
697 | LOCK (preadwritelock); |
482 | ooffset = lseek (fd, 0, SEEK_CUR); |
698 | ooffset = lseek (fd, 0, SEEK_CUR); |
483 | lseek (fd, offset, SEEK_SET); |
699 | lseek (fd, offset, SEEK_SET); |
484 | res = write (fd, buf, count); |
700 | res = write (fd, buf, count); |
485 | lseek (fd, offset, SEEK_SET); |
701 | lseek (fd, offset, SEEK_SET); |
486 | pthread_mutex_unlock (&preadwritelock); |
702 | UNLOCK (preadwritelock); |
487 | |
703 | |
488 | return res; |
704 | return res; |
489 | } |
705 | } |
490 | #endif |
706 | #endif |
491 | |
707 | |
492 | #if !HAVE_FDATASYNC |
708 | #if !HAVE_FDATASYNC |
493 | # define fdatasync fsync |
709 | # define fdatasync fsync |
494 | #endif |
710 | #endif |
495 | |
711 | |
496 | #if !HAVE_READAHEAD |
712 | #if !HAVE_READAHEAD |
497 | # define readahead aio_readahead |
713 | # define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) |
498 | |
714 | |
499 | 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) |
500 | { |
716 | { |
501 | char readahead_buf[4096]; |
717 | dBUF; |
502 | |
718 | |
503 | while (count > 0) |
719 | while (count > 0) |
504 | { |
720 | { |
505 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
721 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
506 | |
722 | |
507 | pread (fd, readahead_buf, len, offset); |
723 | pread (fd, aio_buf, len, offset); |
508 | offset += len; |
724 | offset += len; |
509 | count -= len; |
725 | count -= len; |
510 | } |
726 | } |
511 | |
727 | |
512 | errno = 0; |
728 | errno = 0; |
513 | } |
729 | } |
|
|
730 | |
514 | #endif |
731 | #endif |
515 | |
732 | |
516 | #if !HAVE_READDIR_R |
733 | #if !HAVE_READDIR_R |
517 | # define readdir_r aio_readdir_r |
734 | # define readdir_r aio_readdir_r |
518 | |
735 | |
… | |
… | |
521 | 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) |
522 | { |
739 | { |
523 | struct dirent *e; |
740 | struct dirent *e; |
524 | int errorno; |
741 | int errorno; |
525 | |
742 | |
526 | pthread_mutex_lock (&readdirlock); |
743 | LOCK (readdirlock); |
527 | |
744 | |
528 | e = readdir (dirp); |
745 | e = readdir (dirp); |
529 | errorno = errno; |
746 | errorno = errno; |
530 | |
747 | |
531 | if (e) |
748 | if (e) |
… | |
… | |
534 | strcpy (ent->d_name, e->d_name); |
751 | strcpy (ent->d_name, e->d_name); |
535 | } |
752 | } |
536 | else |
753 | else |
537 | *res = 0; |
754 | *res = 0; |
538 | |
755 | |
539 | pthread_mutex_unlock (&readdirlock); |
756 | UNLOCK (readdirlock); |
540 | |
757 | |
541 | errno = errorno; |
758 | errno = errorno; |
542 | return e ? 0 : -1; |
759 | return e ? 0 : -1; |
543 | } |
760 | } |
544 | #endif |
761 | #endif |
545 | |
762 | |
546 | /* sendfile always needs emulation */ |
763 | /* sendfile always needs emulation */ |
547 | 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) |
548 | { |
765 | { |
549 | ssize_t res; |
766 | ssize_t res; |
550 | |
767 | |
551 | if (!count) |
768 | if (!count) |
552 | return 0; |
769 | return 0; |
… | |
… | |
601 | #endif |
818 | #endif |
602 | ) |
819 | ) |
603 | ) |
820 | ) |
604 | { |
821 | { |
605 | /* emulate sendfile. this is a major pain in the ass */ |
822 | /* emulate sendfile. this is a major pain in the ass */ |
606 | char buf[4096]; |
823 | dBUF; |
|
|
824 | |
607 | res = 0; |
825 | res = 0; |
608 | |
826 | |
609 | while (count) |
827 | while (count) |
610 | { |
828 | { |
611 | ssize_t cnt; |
829 | ssize_t cnt; |
612 | |
830 | |
613 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
831 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
614 | |
832 | |
615 | if (cnt <= 0) |
833 | if (cnt <= 0) |
616 | { |
834 | { |
617 | if (cnt && !res) res = -1; |
835 | if (cnt && !res) res = -1; |
618 | break; |
836 | break; |
619 | } |
837 | } |
620 | |
838 | |
621 | cnt = write (ofd, buf, cnt); |
839 | cnt = write (ofd, aio_buf, cnt); |
622 | |
840 | |
623 | if (cnt <= 0) |
841 | if (cnt <= 0) |
624 | { |
842 | { |
625 | if (cnt && !res) res = -1; |
843 | if (cnt && !res) res = -1; |
626 | break; |
844 | break; |
… | |
… | |
634 | |
852 | |
635 | return res; |
853 | return res; |
636 | } |
854 | } |
637 | |
855 | |
638 | /* read a full directory */ |
856 | /* read a full directory */ |
639 | static int scandir_ (const char *path, void **namesp) |
857 | static void scandir_ (aio_req req, worker *self) |
640 | { |
858 | { |
641 | DIR *dirp = opendir (path); |
859 | DIR *dirp; |
642 | union |
860 | union |
643 | { |
861 | { |
644 | struct dirent d; |
862 | struct dirent d; |
645 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
863 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
646 | } u; |
864 | } *u; |
647 | struct dirent *entp; |
865 | struct dirent *entp; |
648 | char *name, *names; |
866 | char *name, *names; |
649 | int memlen = 4096; |
867 | int memlen = 4096; |
650 | int memofs = 0; |
868 | int memofs = 0; |
651 | int res = 0; |
869 | int res = 0; |
652 | int errorno; |
870 | int errorno; |
653 | |
871 | |
654 | if (!dirp) |
872 | LOCK (wrklock); |
655 | return -1; |
873 | self->dirp = dirp = opendir (req->dataptr); |
656 | |
874 | self->dbuf = u = malloc (sizeof (*u)); |
657 | names = malloc (memlen); |
875 | req->data2ptr = names = malloc (memlen); |
|
|
876 | UNLOCK (wrklock); |
658 | |
877 | |
|
|
878 | if (dirp && u && names) |
659 | for (;;) |
879 | for (;;) |
660 | { |
880 | { |
|
|
881 | errno = 0; |
661 | errno = 0, readdir_r (dirp, &u.d, &entp); |
882 | readdir_r (dirp, &u->d, &entp); |
662 | |
883 | |
663 | if (!entp) |
884 | if (!entp) |
664 | break; |
885 | break; |
665 | |
886 | |
666 | name = entp->d_name; |
887 | name = entp->d_name; |
667 | |
888 | |
668 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
889 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
669 | { |
890 | { |
670 | int len = strlen (name) + 1; |
891 | int len = strlen (name) + 1; |
671 | |
892 | |
672 | res++; |
893 | res++; |
673 | |
894 | |
674 | while (memofs + len > memlen) |
895 | while (memofs + len > memlen) |
675 | { |
896 | { |
676 | memlen *= 2; |
897 | memlen *= 2; |
|
|
898 | LOCK (wrklock); |
677 | names = realloc (names, memlen); |
899 | req->data2ptr = names = realloc (names, memlen); |
|
|
900 | UNLOCK (wrklock); |
|
|
901 | |
678 | if (!names) |
902 | if (!names) |
679 | break; |
903 | break; |
680 | } |
904 | } |
681 | |
905 | |
682 | memcpy (names + memofs, name, len); |
906 | memcpy (names + memofs, name, len); |
683 | memofs += len; |
907 | memofs += len; |
684 | } |
908 | } |
685 | } |
909 | } |
686 | |
910 | |
687 | errorno = errno; |
|
|
688 | closedir (dirp); |
|
|
689 | |
|
|
690 | if (errorno) |
911 | if (errno) |
691 | { |
|
|
692 | free (names); |
|
|
693 | errno = errorno; |
|
|
694 | res = -1; |
912 | res = -1; |
695 | } |
913 | |
696 | |
914 | req->result = res; |
697 | *namesp = (void *)names; |
|
|
698 | return res; |
|
|
699 | } |
915 | } |
700 | |
916 | |
701 | /*****************************************************************************/ |
917 | /*****************************************************************************/ |
702 | |
918 | |
703 | static void *aio_proc (void *thr_arg) |
919 | static void *aio_proc (void *thr_arg) |
704 | { |
920 | { |
705 | aio_req req; |
921 | aio_req req; |
706 | int type; |
922 | int type; |
|
|
923 | worker *self = (worker *)thr_arg; |
707 | |
924 | |
708 | do |
925 | do |
709 | { |
926 | { |
710 | pthread_mutex_lock (&reqlock); |
927 | LOCK (reqlock); |
711 | |
928 | |
712 | for (;;) |
929 | for (;;) |
713 | { |
930 | { |
714 | req = reqs; |
931 | self->req = req = reqq_shift (&req_queue); |
715 | |
|
|
716 | if (reqs) |
|
|
717 | { |
|
|
718 | reqs = reqs->next; |
|
|
719 | if (!reqs) reqe = 0; |
|
|
720 | } |
|
|
721 | |
932 | |
722 | if (req) |
933 | if (req) |
723 | break; |
934 | break; |
724 | |
935 | |
725 | pthread_cond_wait (&reqwait, &reqlock); |
936 | pthread_cond_wait (&reqwait, &reqlock); |
726 | } |
937 | } |
727 | |
938 | |
728 | pthread_mutex_unlock (&reqlock); |
939 | UNLOCK (reqlock); |
729 | |
940 | |
730 | errno = 0; /* strictly unnecessary */ |
941 | errno = 0; /* strictly unnecessary */ |
|
|
942 | type = req->type; /* remember type for QUIT check */ |
731 | |
943 | |
732 | if (!req->cancelled) |
944 | if (!(req->flags & FLAG_CANCELLED)) |
733 | switch (req->type) |
945 | switch (type) |
734 | { |
946 | { |
735 | 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; |
736 | 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; |
737 | |
949 | |
738 | 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; |
739 | 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; |
740 | |
952 | |
741 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
953 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
742 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
954 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
743 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
955 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
744 | |
956 | |
… | |
… | |
750 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
962 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
751 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
963 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
752 | |
964 | |
753 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
965 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
754 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
966 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
755 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
967 | case REQ_READDIR: scandir_ (req, self); break; |
756 | |
968 | |
757 | case REQ_SLEEP: |
969 | case REQ_BUSY: |
758 | { |
970 | { |
759 | struct timeval tv; |
971 | struct timeval tv; |
760 | |
972 | |
761 | tv.tv_sec = req->fd; |
973 | tv.tv_sec = req->fd; |
762 | tv.tv_usec = req->fd2; |
974 | tv.tv_usec = req->fd2; |
763 | |
975 | |
764 | req->result = select (0, 0, 0, 0, &tv); |
976 | req->result = select (0, 0, 0, 0, &tv); |
765 | } |
977 | } |
766 | |
978 | |
|
|
979 | case REQ_GROUP: |
|
|
980 | case REQ_NOP: |
767 | case REQ_QUIT: |
981 | case REQ_QUIT: |
768 | break; |
982 | break; |
769 | |
983 | |
770 | default: |
984 | default: |
771 | req->result = ENOSYS; |
985 | req->result = ENOSYS; |
772 | break; |
986 | break; |
773 | } |
987 | } |
774 | |
988 | |
775 | req->errorno = errno; |
989 | req->errorno = errno; |
776 | |
990 | |
777 | pthread_mutex_lock (&reslock); |
991 | LOCK (reslock); |
778 | |
992 | |
779 | req->next = 0; |
993 | if (!reqq_push (&res_queue, req)) |
780 | |
|
|
781 | if (rese) |
|
|
782 | { |
|
|
783 | rese->next = req; |
|
|
784 | rese = req; |
|
|
785 | } |
|
|
786 | else |
|
|
787 | { |
|
|
788 | rese = ress = req; |
|
|
789 | |
|
|
790 | /* write a dummy byte to the pipe so fh becomes ready */ |
994 | /* write a dummy byte to the pipe so fh becomes ready */ |
791 | write (respipe [1], &respipe, 1); |
995 | write (respipe [1], &respipe, 1); |
792 | } |
|
|
793 | |
996 | |
794 | pthread_mutex_unlock (&reslock); |
997 | self->req = 0; |
|
|
998 | worker_clear (self); |
|
|
999 | |
|
|
1000 | UNLOCK (reslock); |
795 | } |
1001 | } |
796 | while (type != REQ_QUIT); |
1002 | while (type != REQ_QUIT); |
797 | |
1003 | |
|
|
1004 | LOCK (wrklock); |
|
|
1005 | worker_free (self); |
|
|
1006 | UNLOCK (wrklock); |
|
|
1007 | |
798 | return 0; |
1008 | return 0; |
799 | } |
1009 | } |
800 | |
1010 | |
801 | /*****************************************************************************/ |
1011 | /*****************************************************************************/ |
802 | |
1012 | |
803 | static void atfork_prepare (void) |
1013 | static void atfork_prepare (void) |
804 | { |
1014 | { |
805 | pthread_mutex_lock (&reqlock); |
1015 | LOCK (wrklock); |
806 | pthread_mutex_lock (&reslock); |
1016 | LOCK (reqlock); |
|
|
1017 | LOCK (reslock); |
807 | #if !HAVE_PREADWRITE |
1018 | #if !HAVE_PREADWRITE |
808 | pthread_mutex_lock (&preadwritelock); |
1019 | LOCK (preadwritelock); |
809 | #endif |
1020 | #endif |
810 | #if !HAVE_READDIR_R |
1021 | #if !HAVE_READDIR_R |
811 | pthread_mutex_lock (&readdirlock); |
1022 | LOCK (readdirlock); |
812 | #endif |
1023 | #endif |
813 | } |
1024 | } |
814 | |
1025 | |
815 | static void atfork_parent (void) |
1026 | static void atfork_parent (void) |
816 | { |
1027 | { |
817 | #if !HAVE_READDIR_R |
1028 | #if !HAVE_READDIR_R |
818 | pthread_mutex_unlock (&readdirlock); |
1029 | UNLOCK (readdirlock); |
819 | #endif |
1030 | #endif |
820 | #if !HAVE_PREADWRITE |
1031 | #if !HAVE_PREADWRITE |
821 | pthread_mutex_unlock (&preadwritelock); |
1032 | UNLOCK (preadwritelock); |
822 | #endif |
1033 | #endif |
823 | pthread_mutex_unlock (&reslock); |
1034 | UNLOCK (reslock); |
824 | pthread_mutex_unlock (&reqlock); |
1035 | UNLOCK (reqlock); |
|
|
1036 | UNLOCK (wrklock); |
825 | } |
1037 | } |
826 | |
1038 | |
827 | static void atfork_child (void) |
1039 | static void atfork_child (void) |
828 | { |
1040 | { |
829 | aio_req prv; |
1041 | aio_req prv; |
830 | |
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 | |
831 | started = 0; |
1060 | started = 0; |
832 | |
1061 | nreqs = 0; |
833 | while (reqs) |
|
|
834 | { |
|
|
835 | prv = reqs; |
|
|
836 | reqs = prv->next; |
|
|
837 | req_free (prv); |
|
|
838 | } |
|
|
839 | |
|
|
840 | reqs = reqe = 0; |
|
|
841 | |
|
|
842 | while (ress) |
|
|
843 | { |
|
|
844 | prv = ress; |
|
|
845 | ress = prv->next; |
|
|
846 | req_free (prv); |
|
|
847 | } |
|
|
848 | |
|
|
849 | ress = rese = 0; |
|
|
850 | |
1062 | |
851 | close (respipe [0]); |
1063 | close (respipe [0]); |
852 | close (respipe [1]); |
1064 | close (respipe [1]); |
853 | create_pipe (); |
1065 | create_pipe (); |
854 | |
1066 | |
855 | atfork_parent (); |
1067 | atfork_parent (); |
856 | } |
1068 | } |
857 | |
1069 | |
858 | #define dREQ \ |
1070 | #define dREQ \ |
859 | aio_req req; \ |
1071 | aio_req req; \ |
|
|
1072 | int req_pri = next_pri; \ |
|
|
1073 | next_pri = DEFAULT_PRI + PRI_BIAS; \ |
860 | \ |
1074 | \ |
861 | if (SvOK (callback) && !SvROK (callback)) \ |
1075 | if (SvOK (callback) && !SvROK (callback)) \ |
862 | croak ("callback must be undef or of reference type"); \ |
1076 | croak ("callback must be undef or of reference type"); \ |
863 | \ |
1077 | \ |
864 | Newz (0, req, 1, aio_cb); \ |
1078 | Newz (0, req, 1, aio_cb); \ |
865 | if (!req) \ |
1079 | if (!req) \ |
866 | croak ("out of memory during aio_req allocation"); \ |
1080 | croak ("out of memory during aio_req allocation"); \ |
867 | \ |
1081 | \ |
868 | req->callback = newSVsv (callback) |
1082 | req->callback = newSVsv (callback); \ |
|
|
1083 | req->pri = req_pri |
869 | |
1084 | |
870 | #define REQ_SEND \ |
1085 | #define REQ_SEND \ |
871 | req_send (req); \ |
1086 | req_send (req); \ |
872 | \ |
1087 | \ |
873 | if (GIMME_V != G_VOID) \ |
1088 | if (GIMME_V != G_VOID) \ |
… | |
… | |
895 | |
1110 | |
896 | void |
1111 | void |
897 | max_parallel (nthreads) |
1112 | max_parallel (nthreads) |
898 | int nthreads |
1113 | int nthreads |
899 | PROTOTYPE: $ |
1114 | PROTOTYPE: $ |
900 | |
|
|
901 | int |
|
|
902 | max_outstanding (nreqs) |
|
|
903 | int nreqs |
|
|
904 | PROTOTYPE: $ |
|
|
905 | CODE: |
|
|
906 | RETVAL = max_outstanding; |
|
|
907 | max_outstanding = nreqs; |
|
|
908 | |
1115 | |
909 | void |
1116 | void |
910 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
1117 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
911 | SV * pathname |
1118 | SV * pathname |
912 | int flags |
1119 | int flags |
… | |
… | |
1127 | |
1334 | |
1128 | REQ_SEND; |
1335 | REQ_SEND; |
1129 | } |
1336 | } |
1130 | |
1337 | |
1131 | void |
1338 | void |
1132 | aio_sleep (delay,callback=&PL_sv_undef) |
1339 | aio_busy (delay,callback=&PL_sv_undef) |
1133 | double delay |
1340 | double delay |
1134 | SV * callback |
1341 | SV * callback |
1135 | PPCODE: |
1342 | PPCODE: |
1136 | { |
1343 | { |
1137 | dREQ; |
1344 | dREQ; |
1138 | |
1345 | |
1139 | req->type = REQ_SLEEP; |
1346 | req->type = REQ_BUSY; |
1140 | req->fd = delay < 0. ? 0 : delay; |
1347 | req->fd = delay < 0. ? 0 : delay; |
1141 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1348 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1142 | |
1349 | |
1143 | REQ_SEND; |
1350 | REQ_SEND; |
1144 | } |
1351 | } |
… | |
… | |
1148 | SV * callback |
1355 | SV * callback |
1149 | PROTOTYPE: ;$ |
1356 | PROTOTYPE: ;$ |
1150 | PPCODE: |
1357 | PPCODE: |
1151 | { |
1358 | { |
1152 | dREQ; |
1359 | dREQ; |
|
|
1360 | |
1153 | req->type = REQ_GROUP; |
1361 | req->type = REQ_GROUP; |
1154 | req->grp_next = req; |
|
|
1155 | req->grp_prev = req; |
|
|
1156 | |
|
|
1157 | req_send (req); |
1362 | req_send (req); |
|
|
1363 | |
1158 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1364 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1159 | } |
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; |
1160 | |
1393 | |
1161 | void |
1394 | void |
1162 | flush () |
1395 | flush () |
1163 | PROTOTYPE: |
1396 | PROTOTYPE: |
1164 | CODE: |
1397 | CODE: |
1165 | while (nreqs) |
1398 | while (nreqs) |
1166 | { |
1399 | { |
1167 | poll_wait (); |
1400 | poll_wait (); |
1168 | poll_cb (); |
1401 | poll_cb (0); |
1169 | } |
1402 | } |
1170 | |
1403 | |
1171 | void |
1404 | void |
1172 | poll() |
1405 | poll() |
1173 | PROTOTYPE: |
1406 | PROTOTYPE: |
1174 | CODE: |
1407 | CODE: |
1175 | if (nreqs) |
1408 | if (nreqs) |
1176 | { |
1409 | { |
1177 | poll_wait (); |
1410 | poll_wait (); |
1178 | poll_cb (); |
1411 | poll_cb (0); |
1179 | } |
1412 | } |
1180 | |
1413 | |
1181 | int |
1414 | int |
1182 | poll_fileno() |
1415 | poll_fileno() |
1183 | PROTOTYPE: |
1416 | PROTOTYPE: |
… | |
… | |
1188 | |
1421 | |
1189 | int |
1422 | int |
1190 | poll_cb(...) |
1423 | poll_cb(...) |
1191 | PROTOTYPE: |
1424 | PROTOTYPE: |
1192 | CODE: |
1425 | CODE: |
1193 | 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); |
1194 | OUTPUT: |
1435 | OUTPUT: |
1195 | RETVAL |
1436 | RETVAL |
1196 | |
1437 | |
1197 | void |
1438 | void |
1198 | poll_wait() |
1439 | poll_wait() |
… | |
… | |
1207 | CODE: |
1448 | CODE: |
1208 | RETVAL = nreqs; |
1449 | RETVAL = nreqs; |
1209 | OUTPUT: |
1450 | OUTPUT: |
1210 | RETVAL |
1451 | RETVAL |
1211 | |
1452 | |
|
|
1453 | PROTOTYPES: DISABLE |
|
|
1454 | |
1212 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1455 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1213 | |
1456 | |
1214 | void |
1457 | void |
1215 | cancel (aio_req_ornot req) |
1458 | cancel (aio_req_ornot req) |
1216 | PROTOTYPE: |
|
|
1217 | CODE: |
1459 | CODE: |
1218 | req_cancel (req); |
1460 | req_cancel (req); |
1219 | |
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 | |
1220 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
1468 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
1221 | |
1469 | |
1222 | void |
1470 | void |
1223 | add (aio_req grp, ...) |
1471 | add (aio_req grp, ...) |
1224 | PROTOTYPE: $;@ |
|
|
1225 | PPCODE: |
1472 | PPCODE: |
1226 | { |
1473 | { |
1227 | int i; |
1474 | int i; |
|
|
1475 | aio_req req; |
|
|
1476 | |
|
|
1477 | if (grp->fd == 2) |
|
|
1478 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
1228 | |
1479 | |
1229 | for (i = 1; i < items; ++i ) |
1480 | for (i = 1; i < items; ++i ) |
1230 | { |
1481 | { |
1231 | if (GIMME_V != G_VOID) |
1482 | if (GIMME_V != G_VOID) |
1232 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
1483 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
1233 | |
1484 | |
1234 | aio_req req = SvAIO_REQ (ST (i)); |
1485 | req = SvAIO_REQ (ST (i)); |
1235 | |
1486 | |
1236 | if (req) |
1487 | if (req) |
1237 | { |
1488 | { |
1238 | req->grp_prev = grp; |
1489 | ++grp->length; |
1239 | req->grp_next = grp->grp_next; |
|
|
1240 | grp->grp_next->grp_prev = req; |
|
|
1241 | grp->grp_next = req; |
|
|
1242 | |
|
|
1243 | req->grp = grp; |
1490 | req->grp = grp; |
|
|
1491 | |
|
|
1492 | req->grp_prev = 0; |
|
|
1493 | req->grp_next = grp->grp_first; |
|
|
1494 | |
|
|
1495 | if (grp->grp_first) |
|
|
1496 | grp->grp_first->grp_prev = req; |
|
|
1497 | |
|
|
1498 | grp->grp_first = req; |
1244 | } |
1499 | } |
1245 | } |
1500 | } |
1246 | } |
1501 | } |
1247 | |
1502 | |
|
|
1503 | void |
|
|
1504 | cancel_subs (aio_req_ornot req) |
|
|
1505 | CODE: |
|
|
1506 | req_cancel_subs (req); |
|
|
1507 | |
|
|
1508 | void |
|
|
1509 | result (aio_req grp, ...) |
|
|
1510 | CODE: |
|
|
1511 | { |
|
|
1512 | int i; |
|
|
1513 | AV *av = newAV (); |
|
|
1514 | |
|
|
1515 | for (i = 1; i < items; ++i ) |
|
|
1516 | av_push (av, newSVsv (ST (i))); |
|
|
1517 | |
|
|
1518 | SvREFCNT_dec (grp->data); |
|
|
1519 | grp->data = (SV *)av; |
|
|
1520 | } |
|
|
1521 | |
|
|
1522 | void |
|
|
1523 | limit (aio_req grp, int limit) |
|
|
1524 | CODE: |
|
|
1525 | grp->fd2 = limit; |
|
|
1526 | aio_grp_feed (grp); |
|
|
1527 | |
|
|
1528 | void |
|
|
1529 | feed (aio_req grp, SV *callback=&PL_sv_undef) |
|
|
1530 | CODE: |
|
|
1531 | { |
|
|
1532 | SvREFCNT_dec (grp->fh2); |
|
|
1533 | grp->fh2 = newSVsv (callback); |
|
|
1534 | |
|
|
1535 | if (grp->fd2 <= 0) |
|
|
1536 | grp->fd2 = 2; |
|
|
1537 | |
|
|
1538 | aio_grp_feed (grp); |
|
|
1539 | } |
|
|
1540 | |