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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 |
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5 | # define _GNU_SOURCE |
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6 | #endif |
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7 | |
1 | #define _REENTRANT 1 |
8 | #define _REENTRANT 1 |
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9 | |
2 | #include <errno.h> |
10 | #include <errno.h> |
3 | |
11 | |
4 | #include "EXTERN.h" |
12 | #include "EXTERN.h" |
5 | #include "perl.h" |
13 | #include "perl.h" |
6 | #include "XSUB.h" |
14 | #include "XSUB.h" |
… | |
… | |
39 | /* used for struct dirent, AIX doesn't provide it */ |
47 | /* used for struct dirent, AIX doesn't provide it */ |
40 | #ifndef NAME_MAX |
48 | #ifndef NAME_MAX |
41 | # define NAME_MAX 4096 |
49 | # define NAME_MAX 4096 |
42 | #endif |
50 | #endif |
43 | |
51 | |
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52 | #ifndef PTHREAD_STACK_MIN |
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53 | /* care for broken platforms, e.g. windows */ |
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54 | # define PTHREAD_STACK_MIN 16384 |
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55 | #endif |
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56 | |
44 | #if __ia64 |
57 | #if __ia64 |
45 | # define STACKSIZE 65536 |
58 | # define STACKSIZE 65536 |
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59 | #elif __i386 || __x86_64 /* 16k is unreasonably high :( */ |
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60 | # define STACKSIZE PTHREAD_STACK_MIN |
46 | #else |
61 | #else |
47 | # define STACKSIZE 8192 |
62 | # define STACKSIZE 16384 |
48 | #endif |
63 | #endif |
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64 | |
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65 | /* buffer size for various temporary buffers */ |
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66 | #define AIO_BUFSIZE 65536 |
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67 | |
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68 | #define dBUF \ |
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69 | char *aio_buf; \ |
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70 | LOCK (wrklock); \ |
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71 | self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ |
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72 | UNLOCK (wrklock); \ |
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73 | if (!aio_buf) \ |
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74 | return -1; |
49 | |
75 | |
50 | enum { |
76 | enum { |
51 | REQ_QUIT, |
77 | REQ_QUIT, |
52 | REQ_OPEN, REQ_CLOSE, |
78 | REQ_OPEN, REQ_CLOSE, |
53 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
79 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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… | |
55 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
81 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
56 | REQ_FSYNC, REQ_FDATASYNC, |
82 | REQ_FSYNC, REQ_FDATASYNC, |
57 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
83 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
58 | REQ_READDIR, |
84 | REQ_READDIR, |
59 | REQ_LINK, REQ_SYMLINK, |
85 | REQ_LINK, REQ_SYMLINK, |
60 | REQ_SLEEP, |
86 | REQ_GROUP, REQ_NOP, |
61 | REQ_GROUP, |
87 | REQ_BUSY, |
62 | }; |
88 | }; |
63 | |
89 | |
64 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
90 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
65 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
91 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
66 | |
92 | |
67 | typedef struct aio_cb |
93 | typedef struct aio_cb |
68 | { |
94 | { |
69 | struct aio_cb *grp, *grp_prev, *grp_next; |
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70 | |
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71 | struct aio_cb *volatile next; |
95 | 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 | |
96 | |
75 | SV *data, *callback; |
97 | SV *data, *callback; |
76 | SV *fh, *fh2; |
98 | SV *fh, *fh2; |
77 | void *dataptr, *data2ptr; |
99 | void *dataptr, *data2ptr; |
78 | Stat_t *statdata; |
100 | Stat_t *statdata; |
79 | off_t offset; |
101 | off_t offset; |
80 | size_t length; |
102 | size_t length; |
81 | ssize_t result; |
103 | ssize_t result; |
82 | |
104 | |
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105 | STRLEN dataoffset; |
83 | int type; |
106 | int type; |
84 | int fd, fd2; |
107 | int fd, fd2; |
85 | int errorno; |
108 | int errorno; |
86 | STRLEN dataoffset; |
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87 | mode_t mode; /* open */ |
109 | mode_t mode; /* open */ |
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110 | |
88 | unsigned char cancelled; |
111 | unsigned char flags; |
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112 | unsigned char pri; |
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113 | |
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114 | SV *self; /* the perl counterpart of this request, if any */ |
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115 | struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; |
89 | } aio_cb; |
116 | } aio_cb; |
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117 | |
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118 | enum { |
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119 | FLAG_CANCELLED = 0x01, |
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120 | }; |
90 | |
121 | |
91 | typedef aio_cb *aio_req; |
122 | typedef aio_cb *aio_req; |
92 | typedef aio_cb *aio_req_ornot; |
123 | typedef aio_cb *aio_req_ornot; |
93 | |
124 | |
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125 | enum { |
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126 | PRI_MIN = -4, |
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127 | PRI_MAX = 4, |
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128 | |
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129 | DEFAULT_PRI = 0, |
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130 | PRI_BIAS = -PRI_MIN, |
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131 | NUM_PRI = PRI_MAX + PRI_BIAS + 1, |
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132 | }; |
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133 | |
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134 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
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135 | |
94 | static int started, wanted; |
136 | static int started, wanted; |
95 | static volatile int nreqs; |
137 | static volatile int nreqs; |
96 | static int max_outstanding = 1<<30; |
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97 | static int respipe [2]; |
138 | static int respipe [2]; |
98 | |
139 | |
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140 | #if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
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141 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
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142 | #else |
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143 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
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144 | #endif |
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145 | |
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146 | #define LOCK(mutex) pthread_mutex_lock (&(mutex)) |
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147 | #define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) |
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148 | |
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149 | /* worker threasd management */ |
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150 | static pthread_mutex_t wrklock = AIO_MUTEX_INIT; |
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151 | |
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152 | typedef struct worker { |
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153 | /* locked by wrklock */ |
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154 | struct worker *prev, *next; |
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155 | |
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156 | pthread_t tid; |
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157 | |
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158 | /* locked by reslock, reqlock or wrklock */ |
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159 | aio_req req; /* currently processed request */ |
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160 | void *dbuf; |
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161 | DIR *dirp; |
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162 | } worker; |
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163 | |
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164 | static worker wrk_first = { &wrk_first, &wrk_first, 0 }; |
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165 | |
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166 | static void worker_clear (worker *wrk) |
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167 | { |
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168 | if (wrk->dirp) |
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169 | { |
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170 | closedir (wrk->dirp); |
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171 | wrk->dirp = 0; |
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172 | } |
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173 | |
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174 | if (wrk->dbuf) |
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175 | { |
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176 | free (wrk->dbuf); |
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177 | wrk->dbuf = 0; |
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178 | } |
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179 | } |
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180 | |
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181 | static void worker_free (worker *wrk) |
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182 | { |
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183 | wrk->next->prev = wrk->prev; |
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184 | wrk->prev->next = wrk->next; |
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185 | |
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186 | free (wrk); |
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187 | } |
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188 | |
99 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
189 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
100 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
190 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
101 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
191 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
102 | |
192 | |
103 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
193 | /* |
104 | static volatile aio_req ress, rese; /* queue start, queue end */ |
194 | * a somewhat faster data structure might be nice, but |
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195 | * with 8 priorities this actually needs <20 insns |
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196 | * per shift, the most expensive operation. |
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197 | */ |
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198 | typedef struct { |
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199 | aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */ |
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200 | int size; |
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201 | } reqq; |
105 | |
202 | |
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203 | static reqq req_queue; |
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204 | static reqq res_queue; |
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205 | |
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206 | int reqq_push (reqq *q, aio_req req) |
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207 | { |
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208 | int pri = req->pri; |
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209 | req->next = 0; |
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210 | |
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211 | if (q->qe[pri]) |
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212 | { |
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213 | q->qe[pri]->next = req; |
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214 | q->qe[pri] = req; |
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215 | } |
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216 | else |
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217 | q->qe[pri] = q->qs[pri] = req; |
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218 | |
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219 | return q->size++; |
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220 | } |
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221 | |
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222 | aio_req reqq_shift (reqq *q) |
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223 | { |
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224 | int pri; |
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225 | |
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226 | if (!q->size) |
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227 | return 0; |
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228 | |
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229 | --q->size; |
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230 | |
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231 | for (pri = NUM_PRI; pri--; ) |
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232 | { |
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233 | aio_req req = q->qs[pri]; |
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234 | |
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235 | if (req) |
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236 | { |
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237 | if (!(q->qs[pri] = req->next)) |
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238 | q->qe[pri] = 0; |
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239 | |
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240 | return req; |
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241 | } |
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242 | } |
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243 | |
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244 | abort (); |
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245 | } |
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246 | |
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247 | static int poll_cb (); |
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248 | static void req_invoke (aio_req req); |
106 | static void req_free (aio_req req); |
249 | static void req_free (aio_req req); |
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250 | static void req_cancel (aio_req req); |
107 | |
251 | |
108 | /* must be called at most once */ |
252 | /* must be called at most once */ |
109 | static SV *req_sv (aio_req req, const char *klass) |
253 | static SV *req_sv (aio_req req, const char *klass) |
110 | { |
254 | { |
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255 | if (!req->self) |
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256 | { |
111 | req->self = (SV *)newHV (); |
257 | req->self = (SV *)newHV (); |
112 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
258 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
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259 | } |
113 | |
260 | |
114 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
261 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
115 | } |
262 | } |
116 | |
263 | |
117 | static aio_req SvAIO_REQ (SV *sv) |
264 | static aio_req SvAIO_REQ (SV *sv) |
118 | { |
265 | { |
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266 | MAGIC *mg; |
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267 | |
119 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
268 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
120 | croak ("object of class " AIO_REQ_KLASS " expected"); |
269 | croak ("object of class " AIO_REQ_KLASS " expected"); |
121 | |
270 | |
122 | MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
271 | mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
123 | |
272 | |
124 | return mg ? (aio_req)mg->mg_ptr : 0; |
273 | return mg ? (aio_req)mg->mg_ptr : 0; |
125 | } |
274 | } |
126 | |
275 | |
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276 | static void aio_grp_feed (aio_req grp) |
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277 | { |
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278 | while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) |
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279 | { |
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280 | int old_len = grp->length; |
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281 | |
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282 | if (grp->fh2 && SvOK (grp->fh2)) |
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283 | { |
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284 | dSP; |
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285 | |
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286 | ENTER; |
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287 | SAVETMPS; |
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288 | PUSHMARK (SP); |
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289 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
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290 | PUTBACK; |
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291 | call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); |
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292 | SPAGAIN; |
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293 | FREETMPS; |
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294 | LEAVE; |
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295 | } |
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296 | |
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297 | /* stop if no progress has been made */ |
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298 | if (old_len == grp->length) |
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299 | { |
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300 | SvREFCNT_dec (grp->fh2); |
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301 | grp->fh2 = 0; |
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302 | break; |
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303 | } |
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304 | } |
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305 | } |
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306 | |
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307 | static void aio_grp_dec (aio_req grp) |
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308 | { |
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309 | --grp->length; |
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310 | |
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311 | /* call feeder, if applicable */ |
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312 | aio_grp_feed (grp); |
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313 | |
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314 | /* finish, if done */ |
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315 | if (!grp->length && grp->fd) |
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316 | { |
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317 | req_invoke (grp); |
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318 | req_free (grp); |
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319 | } |
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320 | } |
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321 | |
127 | static void poll_wait () |
322 | static void poll_wait () |
128 | { |
323 | { |
129 | if (nreqs && !ress) |
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130 | { |
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131 | fd_set rfd; |
324 | fd_set rfd; |
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325 | |
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326 | while (nreqs) |
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327 | { |
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328 | int size; |
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329 | #if !(__i386 || __x86_64) /* safe without sempahore on these archs */ |
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330 | LOCK (reslock); |
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331 | #endif |
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332 | size = res_queue.size; |
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333 | #if !(__i386 || __x86_64) /* safe without sempahore on these archs */ |
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334 | UNLOCK (reslock); |
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335 | #endif |
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336 | |
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337 | if (size) |
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338 | return; |
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339 | |
132 | FD_ZERO(&rfd); |
340 | FD_ZERO(&rfd); |
133 | FD_SET(respipe [0], &rfd); |
341 | FD_SET(respipe [0], &rfd); |
134 | |
342 | |
135 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
343 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
136 | } |
344 | } |
137 | } |
345 | } |
138 | |
346 | |
139 | static void req_invoke (aio_req req) |
347 | static void req_invoke (aio_req req) |
140 | { |
348 | { |
141 | dSP; |
349 | dSP; |
142 | int errorno = errno; |
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143 | |
350 | |
144 | if (req->cancelled || !SvOK (req->callback)) |
351 | if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
145 | return; |
352 | { |
146 | |
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147 | errno = req->errorno; |
353 | errno = req->errorno; |
148 | |
354 | |
149 | ENTER; |
355 | ENTER; |
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356 | SAVETMPS; |
150 | PUSHMARK (SP); |
357 | PUSHMARK (SP); |
151 | EXTEND (SP, 1); |
358 | EXTEND (SP, 1); |
152 | |
359 | |
153 | switch (req->type) |
360 | switch (req->type) |
154 | { |
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155 | case REQ_READDIR: |
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156 | { |
361 | { |
157 | SV *rv = &PL_sv_undef; |
362 | case REQ_READDIR: |
158 | |
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159 | if (req->result >= 0) |
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160 | { |
363 | { |
161 | char *buf = req->data2ptr; |
364 | SV *rv = &PL_sv_undef; |
162 | AV *av = newAV (); |
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163 | |
365 | |
164 | while (req->result) |
366 | if (req->result >= 0) |
165 | { |
367 | { |
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368 | int i; |
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369 | char *buf = req->data2ptr; |
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370 | AV *av = newAV (); |
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371 | |
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372 | av_extend (av, req->result - 1); |
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373 | |
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374 | for (i = 0; i < req->result; ++i) |
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375 | { |
166 | SV *sv = newSVpv (buf, 0); |
376 | SV *sv = newSVpv (buf, 0); |
167 | |
377 | |
168 | av_push (av, sv); |
378 | av_store (av, i, sv); |
169 | buf += SvCUR (sv) + 1; |
379 | buf += SvCUR (sv) + 1; |
170 | req->result--; |
380 | } |
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381 | |
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382 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
171 | } |
383 | } |
172 | |
384 | |
173 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
385 | PUSHs (rv); |
174 | } |
386 | } |
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387 | break; |
175 | |
388 | |
176 | PUSHs (rv); |
389 | case REQ_OPEN: |
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390 | { |
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391 | /* convert fd to fh */ |
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392 | SV *fh; |
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393 | |
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394 | PUSHs (sv_2mortal (newSViv (req->result))); |
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395 | PUTBACK; |
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396 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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397 | SPAGAIN; |
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398 | |
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399 | fh = SvREFCNT_inc (POPs); |
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400 | |
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401 | PUSHMARK (SP); |
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402 | XPUSHs (sv_2mortal (fh)); |
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403 | } |
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404 | break; |
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405 | |
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406 | case REQ_GROUP: |
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407 | req->fd = 2; /* mark group as finished */ |
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408 | |
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409 | if (req->data) |
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410 | { |
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411 | int i; |
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412 | AV *av = (AV *)req->data; |
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413 | |
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414 | EXTEND (SP, AvFILL (av) + 1); |
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415 | for (i = 0; i <= AvFILL (av); ++i) |
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416 | PUSHs (*av_fetch (av, i, 0)); |
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417 | } |
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418 | break; |
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419 | |
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420 | case REQ_NOP: |
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421 | case REQ_BUSY: |
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422 | break; |
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423 | |
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424 | default: |
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425 | PUSHs (sv_2mortal (newSViv (req->result))); |
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426 | break; |
177 | } |
427 | } |
178 | break; |
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179 | |
428 | |
180 | case REQ_OPEN: |
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181 | { |
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182 | /* convert fd to fh */ |
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183 | SV *fh; |
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184 | |
429 | |
185 | PUSHs (sv_2mortal (newSViv (req->result))); |
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186 | PUTBACK; |
430 | PUTBACK; |
187 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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188 | SPAGAIN; |
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189 | |
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190 | fh = SvREFCNT_inc (POPs); |
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191 | |
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192 | PUSHMARK (SP); |
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193 | XPUSHs (sv_2mortal (fh)); |
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194 | } |
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195 | break; |
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196 | |
|
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197 | case REQ_GROUP: |
|
|
198 | if (req->data) |
|
|
199 | { |
|
|
200 | int i; |
|
|
201 | AV *av = (AV *)req->data; |
|
|
202 | |
|
|
203 | EXTEND (SP, AvFILL (av) + 1); |
|
|
204 | for (i = 0; i <= AvFILL (av); ++i) |
|
|
205 | PUSHs (*av_fetch (av, i, 0)); |
|
|
206 | } |
|
|
207 | break; |
|
|
208 | |
|
|
209 | case REQ_SLEEP: |
|
|
210 | break; |
|
|
211 | |
|
|
212 | default: |
|
|
213 | PUSHs (sv_2mortal (newSViv (req->result))); |
|
|
214 | break; |
|
|
215 | } |
|
|
216 | |
|
|
217 | |
|
|
218 | PUTBACK; |
|
|
219 | call_sv (req->callback, G_VOID | G_EVAL); |
431 | call_sv (req->callback, G_VOID | G_EVAL); |
220 | SPAGAIN; |
432 | SPAGAIN; |
|
|
433 | |
|
|
434 | FREETMPS; |
|
|
435 | LEAVE; |
|
|
436 | } |
|
|
437 | |
|
|
438 | if (req->grp) |
|
|
439 | { |
|
|
440 | aio_req grp = req->grp; |
|
|
441 | |
|
|
442 | /* unlink request */ |
|
|
443 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
|
|
444 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
|
|
445 | |
|
|
446 | if (grp->grp_first == req) |
|
|
447 | grp->grp_first = req->grp_next; |
|
|
448 | |
|
|
449 | aio_grp_dec (grp); |
|
|
450 | } |
221 | |
451 | |
222 | if (SvTRUE (ERRSV)) |
452 | if (SvTRUE (ERRSV)) |
223 | { |
453 | { |
224 | req_free (req); |
454 | req_free (req); |
225 | croak (0); |
455 | croak (0); |
226 | } |
456 | } |
227 | |
|
|
228 | LEAVE; |
|
|
229 | |
|
|
230 | errno = errorno; |
|
|
231 | } |
457 | } |
232 | |
458 | |
233 | static void req_free (aio_req req) |
459 | static void req_free (aio_req req) |
234 | { |
460 | { |
235 | if (req->grp) |
|
|
236 | { |
|
|
237 | aio_req grp = req->grp; |
|
|
238 | |
|
|
239 | /* unlink request */ |
|
|
240 | req->grp_next->grp_prev = req->grp_prev; |
|
|
241 | req->grp_prev->grp_next = req->grp_next; |
|
|
242 | |
|
|
243 | if (grp->grp_next == grp && grp->fd) |
|
|
244 | { |
|
|
245 | req_invoke (grp); |
|
|
246 | req_free (grp); |
|
|
247 | } |
|
|
248 | } |
|
|
249 | |
|
|
250 | if (req->self) |
461 | if (req->self) |
251 | { |
462 | { |
252 | sv_unmagic (req->self, PERL_MAGIC_ext); |
463 | sv_unmagic (req->self, PERL_MAGIC_ext); |
253 | SvREFCNT_dec (req->self); |
464 | SvREFCNT_dec (req->self); |
254 | } |
465 | } |
255 | |
466 | |
256 | if (req->data) |
|
|
257 | SvREFCNT_dec (req->data); |
467 | SvREFCNT_dec (req->data); |
258 | |
|
|
259 | if (req->fh) |
|
|
260 | SvREFCNT_dec (req->fh); |
468 | SvREFCNT_dec (req->fh); |
261 | |
|
|
262 | if (req->fh2) |
|
|
263 | SvREFCNT_dec (req->fh2); |
469 | SvREFCNT_dec (req->fh2); |
264 | |
|
|
265 | if (req->statdata) |
|
|
266 | Safefree (req->statdata); |
|
|
267 | |
|
|
268 | if (req->callback) |
|
|
269 | SvREFCNT_dec (req->callback); |
470 | SvREFCNT_dec (req->callback); |
|
|
471 | Safefree (req->statdata); |
270 | |
472 | |
271 | if (req->type == REQ_READDIR && req->result >= 0) |
473 | if (req->type == REQ_READDIR) |
272 | free (req->data2ptr); |
474 | free (req->data2ptr); |
273 | |
475 | |
274 | Safefree (req); |
476 | Safefree (req); |
275 | } |
477 | } |
276 | |
478 | |
|
|
479 | static void req_cancel_subs (aio_req grp) |
|
|
480 | { |
|
|
481 | aio_req sub; |
|
|
482 | |
|
|
483 | if (grp->type != REQ_GROUP) |
|
|
484 | return; |
|
|
485 | |
|
|
486 | SvREFCNT_dec (grp->fh2); |
|
|
487 | grp->fh2 = 0; |
|
|
488 | |
|
|
489 | for (sub = grp->grp_first; sub; sub = sub->grp_next) |
|
|
490 | req_cancel (sub); |
|
|
491 | } |
|
|
492 | |
277 | static void req_cancel (aio_req req) |
493 | static void req_cancel (aio_req req) |
278 | { |
494 | { |
279 | req->cancelled = 1; |
495 | req->flags |= FLAG_CANCELLED; |
280 | |
496 | |
281 | if (req->type == REQ_GROUP) |
497 | req_cancel_subs (req); |
282 | { |
|
|
283 | aio_req sub; |
|
|
284 | |
|
|
285 | for (sub = req->grp_next; sub != req; sub = sub->grp_next) |
|
|
286 | req_cancel (sub); |
|
|
287 | } |
|
|
288 | } |
498 | } |
289 | |
499 | |
290 | static int poll_cb () |
500 | static int poll_cb () |
291 | { |
501 | { |
292 | dSP; |
502 | dSP; |
… | |
… | |
294 | int do_croak = 0; |
504 | int do_croak = 0; |
295 | aio_req req; |
505 | aio_req req; |
296 | |
506 | |
297 | for (;;) |
507 | for (;;) |
298 | { |
508 | { |
299 | pthread_mutex_lock (&reslock); |
509 | LOCK (reslock); |
300 | req = ress; |
510 | req = reqq_shift (&res_queue); |
301 | |
511 | |
302 | if (req) |
512 | if (req) |
303 | { |
513 | { |
304 | ress = req->next; |
|
|
305 | |
|
|
306 | if (!ress) |
514 | if (!res_queue.size) |
307 | { |
515 | { |
308 | /* read any signals sent by the worker threads */ |
516 | /* read any signals sent by the worker threads */ |
309 | char buf [32]; |
517 | char buf [32]; |
310 | while (read (respipe [0], buf, 32) == 32) |
518 | while (read (respipe [0], buf, 32) == 32) |
311 | ; |
519 | ; |
312 | |
|
|
313 | rese = 0; |
|
|
314 | } |
520 | } |
315 | } |
521 | } |
316 | |
522 | |
317 | pthread_mutex_unlock (&reslock); |
523 | UNLOCK (reslock); |
318 | |
524 | |
319 | if (!req) |
525 | if (!req) |
320 | break; |
526 | break; |
321 | |
527 | |
322 | nreqs--; |
528 | --nreqs; |
323 | |
529 | |
324 | if (req->type == REQ_QUIT) |
530 | if (req->type == REQ_QUIT) |
325 | started--; |
531 | started--; |
326 | else if (req->type == REQ_GROUP && req->grp_next != req) |
532 | else if (req->type == REQ_GROUP && req->length) |
327 | { |
533 | { |
328 | req->fd = 1; /* mark request as delayed */ |
534 | req->fd = 1; /* mark request as delayed */ |
329 | continue; |
535 | continue; |
330 | } |
536 | } |
331 | else |
537 | else |
… | |
… | |
357 | static void *aio_proc(void *arg); |
563 | static void *aio_proc(void *arg); |
358 | |
564 | |
359 | static void start_thread (void) |
565 | static void start_thread (void) |
360 | { |
566 | { |
361 | sigset_t fullsigset, oldsigset; |
567 | sigset_t fullsigset, oldsigset; |
362 | pthread_t tid; |
|
|
363 | pthread_attr_t attr; |
568 | pthread_attr_t attr; |
|
|
569 | |
|
|
570 | worker *wrk = calloc (1, sizeof (worker)); |
|
|
571 | |
|
|
572 | if (!wrk) |
|
|
573 | croak ("unable to allocate worker thread data"); |
364 | |
574 | |
365 | pthread_attr_init (&attr); |
575 | pthread_attr_init (&attr); |
366 | pthread_attr_setstacksize (&attr, STACKSIZE); |
576 | pthread_attr_setstacksize (&attr, STACKSIZE); |
367 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
577 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
368 | |
578 | |
369 | sigfillset (&fullsigset); |
579 | sigfillset (&fullsigset); |
|
|
580 | |
|
|
581 | LOCK (wrklock); |
370 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
582 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
371 | |
583 | |
372 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
584 | if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0) |
|
|
585 | { |
|
|
586 | wrk->prev = &wrk_first; |
|
|
587 | wrk->next = wrk_first.next; |
|
|
588 | wrk_first.next->prev = wrk; |
|
|
589 | wrk_first.next = wrk; |
373 | started++; |
590 | started++; |
|
|
591 | } |
|
|
592 | else |
|
|
593 | free (wrk); |
374 | |
594 | |
375 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
595 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
|
|
596 | UNLOCK (wrklock); |
376 | } |
597 | } |
377 | |
598 | |
378 | static void req_send (aio_req req) |
599 | static void req_send (aio_req req) |
379 | { |
600 | { |
380 | while (started < wanted && nreqs >= started) |
601 | while (started < wanted && nreqs >= started) |
381 | start_thread (); |
602 | start_thread (); |
382 | |
603 | |
383 | nreqs++; |
604 | ++nreqs; |
384 | |
605 | |
385 | pthread_mutex_lock (&reqlock); |
606 | LOCK (reqlock); |
386 | |
607 | reqq_push (&req_queue, req); |
387 | req->next = 0; |
|
|
388 | |
|
|
389 | if (reqe) |
|
|
390 | { |
|
|
391 | reqe->next = req; |
|
|
392 | reqe = req; |
|
|
393 | } |
|
|
394 | else |
|
|
395 | reqe = reqs = req; |
|
|
396 | |
|
|
397 | pthread_cond_signal (&reqwait); |
608 | pthread_cond_signal (&reqwait); |
398 | pthread_mutex_unlock (&reqlock); |
609 | UNLOCK (reqlock); |
399 | |
|
|
400 | if (nreqs > max_outstanding) |
|
|
401 | for (;;) |
|
|
402 | { |
|
|
403 | poll_cb (); |
|
|
404 | |
|
|
405 | if (nreqs <= max_outstanding) |
|
|
406 | break; |
|
|
407 | |
|
|
408 | poll_wait (); |
|
|
409 | } |
|
|
410 | } |
610 | } |
411 | |
611 | |
412 | static void end_thread (void) |
612 | static void end_thread (void) |
413 | { |
613 | { |
414 | aio_req req; |
614 | aio_req req; |
|
|
615 | |
415 | Newz (0, req, 1, aio_cb); |
616 | Newz (0, req, 1, aio_cb); |
|
|
617 | |
416 | req->type = REQ_QUIT; |
618 | req->type = REQ_QUIT; |
|
|
619 | req->pri = PRI_MAX + PRI_BIAS; |
417 | |
620 | |
418 | req_send (req); |
621 | req_send (req); |
419 | } |
622 | } |
420 | |
623 | |
421 | static void min_parallel (int nthreads) |
624 | static void min_parallel (int nthreads) |
… | |
… | |
473 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
676 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
474 | { |
677 | { |
475 | ssize_t res; |
678 | ssize_t res; |
476 | off_t ooffset; |
679 | off_t ooffset; |
477 | |
680 | |
478 | pthread_mutex_lock (&preadwritelock); |
681 | LOCK (preadwritelock); |
479 | ooffset = lseek (fd, 0, SEEK_CUR); |
682 | ooffset = lseek (fd, 0, SEEK_CUR); |
480 | lseek (fd, offset, SEEK_SET); |
683 | lseek (fd, offset, SEEK_SET); |
481 | res = read (fd, buf, count); |
684 | res = read (fd, buf, count); |
482 | lseek (fd, ooffset, SEEK_SET); |
685 | lseek (fd, ooffset, SEEK_SET); |
483 | pthread_mutex_unlock (&preadwritelock); |
686 | UNLOCK (preadwritelock); |
484 | |
687 | |
485 | return res; |
688 | return res; |
486 | } |
689 | } |
487 | |
690 | |
488 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
691 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
489 | { |
692 | { |
490 | ssize_t res; |
693 | ssize_t res; |
491 | off_t ooffset; |
694 | off_t ooffset; |
492 | |
695 | |
493 | pthread_mutex_lock (&preadwritelock); |
696 | LOCK (preadwritelock); |
494 | ooffset = lseek (fd, 0, SEEK_CUR); |
697 | ooffset = lseek (fd, 0, SEEK_CUR); |
495 | lseek (fd, offset, SEEK_SET); |
698 | lseek (fd, offset, SEEK_SET); |
496 | res = write (fd, buf, count); |
699 | res = write (fd, buf, count); |
497 | lseek (fd, offset, SEEK_SET); |
700 | lseek (fd, offset, SEEK_SET); |
498 | pthread_mutex_unlock (&preadwritelock); |
701 | UNLOCK (preadwritelock); |
499 | |
702 | |
500 | return res; |
703 | return res; |
501 | } |
704 | } |
502 | #endif |
705 | #endif |
503 | |
706 | |
504 | #if !HAVE_FDATASYNC |
707 | #if !HAVE_FDATASYNC |
505 | # define fdatasync fsync |
708 | # define fdatasync fsync |
506 | #endif |
709 | #endif |
507 | |
710 | |
508 | #if !HAVE_READAHEAD |
711 | #if !HAVE_READAHEAD |
509 | # define readahead aio_readahead |
712 | # define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) |
510 | |
713 | |
511 | static ssize_t readahead (int fd, off_t offset, size_t count) |
714 | static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) |
512 | { |
715 | { |
513 | char readahead_buf[4096]; |
716 | dBUF; |
514 | |
717 | |
515 | while (count > 0) |
718 | while (count > 0) |
516 | { |
719 | { |
517 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
720 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
518 | |
721 | |
519 | pread (fd, readahead_buf, len, offset); |
722 | pread (fd, aio_buf, len, offset); |
520 | offset += len; |
723 | offset += len; |
521 | count -= len; |
724 | count -= len; |
522 | } |
725 | } |
523 | |
726 | |
524 | errno = 0; |
727 | errno = 0; |
525 | } |
728 | } |
|
|
729 | |
526 | #endif |
730 | #endif |
527 | |
731 | |
528 | #if !HAVE_READDIR_R |
732 | #if !HAVE_READDIR_R |
529 | # define readdir_r aio_readdir_r |
733 | # define readdir_r aio_readdir_r |
530 | |
734 | |
… | |
… | |
533 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
737 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
534 | { |
738 | { |
535 | struct dirent *e; |
739 | struct dirent *e; |
536 | int errorno; |
740 | int errorno; |
537 | |
741 | |
538 | pthread_mutex_lock (&readdirlock); |
742 | LOCK (readdirlock); |
539 | |
743 | |
540 | e = readdir (dirp); |
744 | e = readdir (dirp); |
541 | errorno = errno; |
745 | errorno = errno; |
542 | |
746 | |
543 | if (e) |
747 | if (e) |
… | |
… | |
546 | strcpy (ent->d_name, e->d_name); |
750 | strcpy (ent->d_name, e->d_name); |
547 | } |
751 | } |
548 | else |
752 | else |
549 | *res = 0; |
753 | *res = 0; |
550 | |
754 | |
551 | pthread_mutex_unlock (&readdirlock); |
755 | UNLOCK (readdirlock); |
552 | |
756 | |
553 | errno = errorno; |
757 | errno = errorno; |
554 | return e ? 0 : -1; |
758 | return e ? 0 : -1; |
555 | } |
759 | } |
556 | #endif |
760 | #endif |
557 | |
761 | |
558 | /* sendfile always needs emulation */ |
762 | /* sendfile always needs emulation */ |
559 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
763 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) |
560 | { |
764 | { |
561 | ssize_t res; |
765 | ssize_t res; |
562 | |
766 | |
563 | if (!count) |
767 | if (!count) |
564 | return 0; |
768 | return 0; |
… | |
… | |
613 | #endif |
817 | #endif |
614 | ) |
818 | ) |
615 | ) |
819 | ) |
616 | { |
820 | { |
617 | /* emulate sendfile. this is a major pain in the ass */ |
821 | /* emulate sendfile. this is a major pain in the ass */ |
618 | char buf[4096]; |
822 | dBUF; |
|
|
823 | |
619 | res = 0; |
824 | res = 0; |
620 | |
825 | |
621 | while (count) |
826 | while (count) |
622 | { |
827 | { |
623 | ssize_t cnt; |
828 | ssize_t cnt; |
624 | |
829 | |
625 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
830 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
626 | |
831 | |
627 | if (cnt <= 0) |
832 | if (cnt <= 0) |
628 | { |
833 | { |
629 | if (cnt && !res) res = -1; |
834 | if (cnt && !res) res = -1; |
630 | break; |
835 | break; |
631 | } |
836 | } |
632 | |
837 | |
633 | cnt = write (ofd, buf, cnt); |
838 | cnt = write (ofd, aio_buf, cnt); |
634 | |
839 | |
635 | if (cnt <= 0) |
840 | if (cnt <= 0) |
636 | { |
841 | { |
637 | if (cnt && !res) res = -1; |
842 | if (cnt && !res) res = -1; |
638 | break; |
843 | break; |
… | |
… | |
646 | |
851 | |
647 | return res; |
852 | return res; |
648 | } |
853 | } |
649 | |
854 | |
650 | /* read a full directory */ |
855 | /* read a full directory */ |
651 | static int scandir_ (const char *path, void **namesp) |
856 | static void scandir_ (aio_req req, worker *self) |
652 | { |
857 | { |
653 | DIR *dirp = opendir (path); |
858 | DIR *dirp; |
654 | union |
859 | union |
655 | { |
860 | { |
656 | struct dirent d; |
861 | struct dirent d; |
657 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
862 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
658 | } u; |
863 | } *u; |
659 | struct dirent *entp; |
864 | struct dirent *entp; |
660 | char *name, *names; |
865 | char *name, *names; |
661 | int memlen = 4096; |
866 | int memlen = 4096; |
662 | int memofs = 0; |
867 | int memofs = 0; |
663 | int res = 0; |
868 | int res = 0; |
664 | int errorno; |
869 | int errorno; |
665 | |
870 | |
666 | if (!dirp) |
871 | LOCK (wrklock); |
667 | return -1; |
872 | self->dirp = dirp = opendir (req->dataptr); |
|
|
873 | self->dbuf = u = malloc (sizeof (*u)); |
|
|
874 | UNLOCK (wrklock); |
668 | |
875 | |
669 | names = malloc (memlen); |
876 | req->data2ptr = names = malloc (memlen); |
670 | |
877 | |
|
|
878 | if (dirp && u && names) |
671 | for (;;) |
879 | for (;;) |
672 | { |
880 | { |
|
|
881 | errno = 0; |
673 | errno = 0, readdir_r (dirp, &u.d, &entp); |
882 | readdir_r (dirp, &u->d, &entp); |
674 | |
883 | |
675 | if (!entp) |
884 | if (!entp) |
676 | break; |
885 | break; |
677 | |
886 | |
678 | name = entp->d_name; |
887 | name = entp->d_name; |
679 | |
888 | |
680 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
889 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
681 | { |
890 | { |
682 | int len = strlen (name) + 1; |
891 | int len = strlen (name) + 1; |
683 | |
892 | |
684 | res++; |
893 | res++; |
685 | |
894 | |
686 | while (memofs + len > memlen) |
895 | while (memofs + len > memlen) |
687 | { |
896 | { |
688 | memlen *= 2; |
897 | memlen *= 2; |
|
|
898 | LOCK (wrklock); |
689 | names = realloc (names, memlen); |
899 | req->data2ptr = names = realloc (names, memlen); |
|
|
900 | UNLOCK (wrklock); |
|
|
901 | |
690 | if (!names) |
902 | if (!names) |
691 | break; |
903 | break; |
692 | } |
904 | } |
693 | |
905 | |
694 | memcpy (names + memofs, name, len); |
906 | memcpy (names + memofs, name, len); |
695 | memofs += len; |
907 | memofs += len; |
696 | } |
908 | } |
697 | } |
909 | } |
698 | |
910 | |
699 | errorno = errno; |
|
|
700 | closedir (dirp); |
|
|
701 | |
|
|
702 | if (errorno) |
911 | if (errno) |
703 | { |
|
|
704 | free (names); |
|
|
705 | errno = errorno; |
|
|
706 | res = -1; |
912 | res = -1; |
707 | } |
913 | |
708 | |
914 | req->result = res; |
709 | *namesp = (void *)names; |
|
|
710 | return res; |
|
|
711 | } |
915 | } |
712 | |
916 | |
713 | /*****************************************************************************/ |
917 | /*****************************************************************************/ |
714 | |
918 | |
715 | static void *aio_proc (void *thr_arg) |
919 | static void *aio_proc (void *thr_arg) |
716 | { |
920 | { |
717 | aio_req req; |
921 | aio_req req; |
718 | int type; |
922 | int type; |
|
|
923 | worker *self = (worker *)thr_arg; |
719 | |
924 | |
720 | do |
925 | do |
721 | { |
926 | { |
722 | pthread_mutex_lock (&reqlock); |
927 | LOCK (reqlock); |
723 | |
928 | |
724 | for (;;) |
929 | for (;;) |
725 | { |
930 | { |
726 | req = reqs; |
931 | self->req = req = reqq_shift (&req_queue); |
727 | |
|
|
728 | if (reqs) |
|
|
729 | { |
|
|
730 | reqs = reqs->next; |
|
|
731 | if (!reqs) reqe = 0; |
|
|
732 | } |
|
|
733 | |
932 | |
734 | if (req) |
933 | if (req) |
735 | break; |
934 | break; |
736 | |
935 | |
737 | pthread_cond_wait (&reqwait, &reqlock); |
936 | pthread_cond_wait (&reqwait, &reqlock); |
738 | } |
937 | } |
739 | |
938 | |
740 | pthread_mutex_unlock (&reqlock); |
939 | UNLOCK (reqlock); |
741 | |
940 | |
742 | errno = 0; /* strictly unnecessary */ |
941 | errno = 0; /* strictly unnecessary */ |
|
|
942 | type = req->type; /* remember type for QUIT check */ |
743 | |
943 | |
744 | if (!req->cancelled) |
944 | if (!(req->flags & FLAG_CANCELLED)) |
745 | switch (req->type) |
945 | switch (type) |
746 | { |
946 | { |
747 | 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; |
748 | 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; |
749 | |
949 | |
750 | 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; |
751 | 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; |
752 | |
952 | |
753 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
953 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
754 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
954 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
755 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
955 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
756 | |
956 | |
… | |
… | |
762 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
962 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
763 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
963 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
764 | |
964 | |
765 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
965 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
766 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
966 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
767 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
967 | case REQ_READDIR: scandir_ (req, self); break; |
768 | |
968 | |
769 | case REQ_SLEEP: |
969 | case REQ_BUSY: |
770 | { |
970 | { |
771 | struct timeval tv; |
971 | struct timeval tv; |
772 | |
972 | |
773 | tv.tv_sec = req->fd; |
973 | tv.tv_sec = req->fd; |
774 | tv.tv_usec = req->fd2; |
974 | tv.tv_usec = req->fd2; |
775 | |
975 | |
776 | req->result = select (0, 0, 0, 0, &tv); |
976 | req->result = select (0, 0, 0, 0, &tv); |
777 | } |
977 | } |
778 | |
978 | |
|
|
979 | case REQ_GROUP: |
|
|
980 | case REQ_NOP: |
779 | case REQ_QUIT: |
981 | case REQ_QUIT: |
780 | break; |
982 | break; |
781 | |
983 | |
782 | default: |
984 | default: |
783 | req->result = ENOSYS; |
985 | req->result = ENOSYS; |
784 | break; |
986 | break; |
785 | } |
987 | } |
786 | |
988 | |
787 | req->errorno = errno; |
989 | req->errorno = errno; |
788 | |
990 | |
789 | pthread_mutex_lock (&reslock); |
991 | LOCK (reslock); |
790 | |
992 | |
791 | req->next = 0; |
993 | if (!reqq_push (&res_queue, req)) |
792 | |
|
|
793 | if (rese) |
|
|
794 | { |
|
|
795 | rese->next = req; |
|
|
796 | rese = req; |
|
|
797 | } |
|
|
798 | else |
|
|
799 | { |
|
|
800 | rese = ress = req; |
|
|
801 | |
|
|
802 | /* write a dummy byte to the pipe so fh becomes ready */ |
994 | /* write a dummy byte to the pipe so fh becomes ready */ |
803 | write (respipe [1], &respipe, 1); |
995 | write (respipe [1], &respipe, 1); |
804 | } |
|
|
805 | |
996 | |
806 | pthread_mutex_unlock (&reslock); |
997 | self->req = 0; |
|
|
998 | worker_clear (self); |
|
|
999 | |
|
|
1000 | UNLOCK (reslock); |
807 | } |
1001 | } |
808 | while (type != REQ_QUIT); |
1002 | while (type != REQ_QUIT); |
809 | |
1003 | |
|
|
1004 | LOCK (wrklock); |
|
|
1005 | worker_free (self); |
|
|
1006 | UNLOCK (wrklock); |
|
|
1007 | |
810 | return 0; |
1008 | return 0; |
811 | } |
1009 | } |
812 | |
1010 | |
813 | /*****************************************************************************/ |
1011 | /*****************************************************************************/ |
814 | |
1012 | |
815 | static void atfork_prepare (void) |
1013 | static void atfork_prepare (void) |
816 | { |
1014 | { |
817 | pthread_mutex_lock (&reqlock); |
1015 | LOCK (wrklock); |
818 | pthread_mutex_lock (&reslock); |
1016 | LOCK (reqlock); |
|
|
1017 | LOCK (reslock); |
819 | #if !HAVE_PREADWRITE |
1018 | #if !HAVE_PREADWRITE |
820 | pthread_mutex_lock (&preadwritelock); |
1019 | LOCK (preadwritelock); |
821 | #endif |
1020 | #endif |
822 | #if !HAVE_READDIR_R |
1021 | #if !HAVE_READDIR_R |
823 | pthread_mutex_lock (&readdirlock); |
1022 | LOCK (readdirlock); |
824 | #endif |
1023 | #endif |
825 | } |
1024 | } |
826 | |
1025 | |
827 | static void atfork_parent (void) |
1026 | static void atfork_parent (void) |
828 | { |
1027 | { |
829 | #if !HAVE_READDIR_R |
1028 | #if !HAVE_READDIR_R |
830 | pthread_mutex_unlock (&readdirlock); |
1029 | UNLOCK (readdirlock); |
831 | #endif |
1030 | #endif |
832 | #if !HAVE_PREADWRITE |
1031 | #if !HAVE_PREADWRITE |
833 | pthread_mutex_unlock (&preadwritelock); |
1032 | UNLOCK (preadwritelock); |
834 | #endif |
1033 | #endif |
835 | pthread_mutex_unlock (&reslock); |
1034 | UNLOCK (reslock); |
836 | pthread_mutex_unlock (&reqlock); |
1035 | UNLOCK (reqlock); |
|
|
1036 | UNLOCK (wrklock); |
837 | } |
1037 | } |
838 | |
1038 | |
839 | static void atfork_child (void) |
1039 | static void atfork_child (void) |
840 | { |
1040 | { |
841 | aio_req prv; |
1041 | aio_req prv; |
842 | |
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 | |
843 | started = 0; |
1060 | started = 0; |
844 | |
1061 | nreqs = 0; |
845 | while (reqs) |
|
|
846 | { |
|
|
847 | prv = reqs; |
|
|
848 | reqs = prv->next; |
|
|
849 | req_free (prv); |
|
|
850 | } |
|
|
851 | |
|
|
852 | reqs = reqe = 0; |
|
|
853 | |
|
|
854 | while (ress) |
|
|
855 | { |
|
|
856 | prv = ress; |
|
|
857 | ress = prv->next; |
|
|
858 | req_free (prv); |
|
|
859 | } |
|
|
860 | |
|
|
861 | ress = rese = 0; |
|
|
862 | |
1062 | |
863 | close (respipe [0]); |
1063 | close (respipe [0]); |
864 | close (respipe [1]); |
1064 | close (respipe [1]); |
865 | create_pipe (); |
1065 | create_pipe (); |
866 | |
1066 | |
867 | atfork_parent (); |
1067 | atfork_parent (); |
868 | } |
1068 | } |
869 | |
1069 | |
870 | #define dREQ \ |
1070 | #define dREQ \ |
871 | aio_req req; \ |
1071 | aio_req req; \ |
|
|
1072 | int req_pri = next_pri; \ |
|
|
1073 | next_pri = DEFAULT_PRI + PRI_BIAS; \ |
872 | \ |
1074 | \ |
873 | if (SvOK (callback) && !SvROK (callback)) \ |
1075 | if (SvOK (callback) && !SvROK (callback)) \ |
874 | croak ("callback must be undef or of reference type"); \ |
1076 | croak ("callback must be undef or of reference type"); \ |
875 | \ |
1077 | \ |
876 | Newz (0, req, 1, aio_cb); \ |
1078 | Newz (0, req, 1, aio_cb); \ |
877 | if (!req) \ |
1079 | if (!req) \ |
878 | croak ("out of memory during aio_req allocation"); \ |
1080 | croak ("out of memory during aio_req allocation"); \ |
879 | \ |
1081 | \ |
880 | req->callback = newSVsv (callback) |
1082 | req->callback = newSVsv (callback); \ |
|
|
1083 | req->pri = req_pri |
881 | |
1084 | |
882 | #define REQ_SEND \ |
1085 | #define REQ_SEND \ |
883 | req_send (req); \ |
1086 | req_send (req); \ |
884 | \ |
1087 | \ |
885 | if (GIMME_V != G_VOID) \ |
1088 | if (GIMME_V != G_VOID) \ |
… | |
… | |
907 | |
1110 | |
908 | void |
1111 | void |
909 | max_parallel (nthreads) |
1112 | max_parallel (nthreads) |
910 | int nthreads |
1113 | int nthreads |
911 | PROTOTYPE: $ |
1114 | PROTOTYPE: $ |
912 | |
|
|
913 | int |
|
|
914 | max_outstanding (nreqs) |
|
|
915 | int nreqs |
|
|
916 | PROTOTYPE: $ |
|
|
917 | CODE: |
|
|
918 | RETVAL = max_outstanding; |
|
|
919 | max_outstanding = nreqs; |
|
|
920 | |
1115 | |
921 | void |
1116 | void |
922 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
1117 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
923 | SV * pathname |
1118 | SV * pathname |
924 | int flags |
1119 | int flags |
… | |
… | |
1139 | |
1334 | |
1140 | REQ_SEND; |
1335 | REQ_SEND; |
1141 | } |
1336 | } |
1142 | |
1337 | |
1143 | void |
1338 | void |
1144 | aio_sleep (delay,callback=&PL_sv_undef) |
1339 | aio_busy (delay,callback=&PL_sv_undef) |
1145 | double delay |
1340 | double delay |
1146 | SV * callback |
1341 | SV * callback |
1147 | PPCODE: |
1342 | PPCODE: |
1148 | { |
1343 | { |
1149 | dREQ; |
1344 | dREQ; |
1150 | |
1345 | |
1151 | req->type = REQ_SLEEP; |
1346 | req->type = REQ_BUSY; |
1152 | req->fd = delay < 0. ? 0 : delay; |
1347 | req->fd = delay < 0. ? 0 : delay; |
1153 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1348 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1154 | |
1349 | |
1155 | REQ_SEND; |
1350 | REQ_SEND; |
1156 | } |
1351 | } |
… | |
… | |
1160 | SV * callback |
1355 | SV * callback |
1161 | PROTOTYPE: ;$ |
1356 | PROTOTYPE: ;$ |
1162 | PPCODE: |
1357 | PPCODE: |
1163 | { |
1358 | { |
1164 | dREQ; |
1359 | dREQ; |
|
|
1360 | |
1165 | req->type = REQ_GROUP; |
1361 | req->type = REQ_GROUP; |
1166 | req->grp_next = req; |
|
|
1167 | req->grp_prev = req; |
|
|
1168 | |
|
|
1169 | req_send (req); |
1362 | req_send (req); |
|
|
1363 | |
1170 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1364 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1171 | } |
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; |
1172 | |
1393 | |
1173 | void |
1394 | void |
1174 | flush () |
1395 | flush () |
1175 | PROTOTYPE: |
1396 | PROTOTYPE: |
1176 | CODE: |
1397 | CODE: |
… | |
… | |
1225 | |
1446 | |
1226 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1447 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1227 | |
1448 | |
1228 | void |
1449 | void |
1229 | cancel (aio_req_ornot req) |
1450 | cancel (aio_req_ornot req) |
1230 | PROTOTYPE: |
|
|
1231 | CODE: |
1451 | CODE: |
1232 | req_cancel (req); |
1452 | req_cancel (req); |
1233 | |
1453 | |
|
|
1454 | void |
|
|
1455 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
|
|
1456 | CODE: |
|
|
1457 | SvREFCNT_dec (req->callback); |
|
|
1458 | req->callback = newSVsv (callback); |
|
|
1459 | |
1234 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
1460 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
1235 | |
1461 | |
1236 | void |
1462 | void |
1237 | add (aio_req grp, ...) |
1463 | add (aio_req grp, ...) |
1238 | PPCODE: |
1464 | PPCODE: |
1239 | { |
1465 | { |
1240 | int i; |
1466 | int i; |
|
|
1467 | aio_req req; |
|
|
1468 | |
|
|
1469 | if (grp->fd == 2) |
|
|
1470 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
1241 | |
1471 | |
1242 | for (i = 1; i < items; ++i ) |
1472 | for (i = 1; i < items; ++i ) |
1243 | { |
1473 | { |
1244 | if (GIMME_V != G_VOID) |
1474 | if (GIMME_V != G_VOID) |
1245 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
1475 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
1246 | |
1476 | |
1247 | aio_req req = SvAIO_REQ (ST (i)); |
1477 | req = SvAIO_REQ (ST (i)); |
1248 | |
1478 | |
1249 | if (req) |
1479 | if (req) |
1250 | { |
1480 | { |
1251 | req->grp_prev = grp; |
1481 | ++grp->length; |
1252 | req->grp_next = grp->grp_next; |
|
|
1253 | grp->grp_next->grp_prev = req; |
|
|
1254 | grp->grp_next = req; |
|
|
1255 | |
|
|
1256 | req->grp = grp; |
1482 | req->grp = grp; |
|
|
1483 | |
|
|
1484 | req->grp_prev = 0; |
|
|
1485 | req->grp_next = grp->grp_first; |
|
|
1486 | |
|
|
1487 | if (grp->grp_first) |
|
|
1488 | grp->grp_first->grp_prev = req; |
|
|
1489 | |
|
|
1490 | grp->grp_first = req; |
1257 | } |
1491 | } |
1258 | } |
1492 | } |
1259 | } |
1493 | } |
1260 | |
1494 | |
1261 | void |
1495 | void |
|
|
1496 | cancel_subs (aio_req_ornot req) |
|
|
1497 | CODE: |
|
|
1498 | req_cancel_subs (req); |
|
|
1499 | |
|
|
1500 | void |
1262 | result (aio_req grp, ...) |
1501 | result (aio_req grp, ...) |
|
|
1502 | CODE: |
|
|
1503 | { |
|
|
1504 | int i; |
|
|
1505 | AV *av = newAV (); |
|
|
1506 | |
|
|
1507 | for (i = 1; i < items; ++i ) |
|
|
1508 | av_push (av, newSVsv (ST (i))); |
|
|
1509 | |
|
|
1510 | SvREFCNT_dec (grp->data); |
|
|
1511 | grp->data = (SV *)av; |
|
|
1512 | } |
|
|
1513 | |
|
|
1514 | void |
|
|
1515 | limit (aio_req grp, int limit) |
1263 | CODE: |
1516 | CODE: |
1264 | { |
1517 | grp->fd2 = limit; |
1265 | int i; |
1518 | aio_grp_feed (grp); |
1266 | AV *av = newAV (); |
|
|
1267 | |
1519 | |
1268 | if (grp->data) |
1520 | void |
|
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1521 | feed (aio_req grp, SV *callback=&PL_sv_undef) |
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1522 | CODE: |
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1523 | { |
1269 | SvREFCNT_dec (grp->data); |
1524 | SvREFCNT_dec (grp->fh2); |
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1525 | grp->fh2 = newSVsv (callback); |
1270 | |
1526 | |
1271 | for (i = 1; i < items; ++i ) |
1527 | if (grp->fd2 <= 0) |
1272 | av_push (av, newSVsv (ST (i))); |
1528 | grp->fd2 = 2; |
1273 | |
1529 | |
1274 | grp->data = (SV *)av; |
1530 | aio_grp_feed (grp); |
1275 | } |
1531 | } |
1276 | |
1532 | |