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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" |
… | |
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9 | |
18 | |
10 | #include <pthread.h> |
19 | #include <pthread.h> |
11 | |
20 | |
12 | #include <stddef.h> |
21 | #include <stddef.h> |
13 | #include <errno.h> |
22 | #include <errno.h> |
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23 | #include <sys/time.h> |
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24 | #include <sys/select.h> |
14 | #include <sys/types.h> |
25 | #include <sys/types.h> |
15 | #include <sys/stat.h> |
26 | #include <sys/stat.h> |
16 | #include <limits.h> |
27 | #include <limits.h> |
17 | #include <unistd.h> |
28 | #include <unistd.h> |
18 | #include <fcntl.h> |
29 | #include <fcntl.h> |
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37 | /* used for struct dirent, AIX doesn't provide it */ |
48 | /* used for struct dirent, AIX doesn't provide it */ |
38 | #ifndef NAME_MAX |
49 | #ifndef NAME_MAX |
39 | # define NAME_MAX 4096 |
50 | # define NAME_MAX 4096 |
40 | #endif |
51 | #endif |
41 | |
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 | |
42 | #if __ia64 |
58 | #if __ia64 |
43 | # 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 |
44 | #else |
62 | #else |
45 | # define STACKSIZE 8192 |
63 | # define STACKSIZE 16384 |
46 | #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; |
47 | |
76 | |
48 | enum { |
77 | enum { |
49 | REQ_QUIT, |
78 | REQ_QUIT, |
50 | REQ_OPEN, REQ_CLOSE, |
79 | REQ_OPEN, REQ_CLOSE, |
51 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
80 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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53 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
82 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
54 | REQ_FSYNC, REQ_FDATASYNC, |
83 | REQ_FSYNC, REQ_FDATASYNC, |
55 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
84 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
56 | REQ_READDIR, |
85 | REQ_READDIR, |
57 | REQ_LINK, REQ_SYMLINK, |
86 | REQ_LINK, REQ_SYMLINK, |
58 | REQ_GROUP, |
87 | REQ_GROUP, REQ_NOP, |
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88 | REQ_BUSY, |
59 | }; |
89 | }; |
60 | |
90 | |
61 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
91 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
62 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
92 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
63 | |
93 | |
64 | typedef struct aio_cb |
94 | typedef struct aio_cb |
65 | { |
95 | { |
66 | struct aio_cb *grp, *grp_prev, *grp_next; |
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67 | |
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68 | struct aio_cb *volatile next; |
96 | struct aio_cb *volatile next; |
69 | |
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70 | SV *self; /* the perl counterpart of this request, if any */ |
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71 | |
97 | |
72 | SV *data, *callback; |
98 | SV *data, *callback; |
73 | SV *fh, *fh2; |
99 | SV *fh, *fh2; |
74 | void *dataptr, *data2ptr; |
100 | void *dataptr, *data2ptr; |
75 | Stat_t *statdata; |
101 | Stat_t *statdata; |
76 | off_t offset; |
102 | off_t offset; |
77 | size_t length; |
103 | size_t length; |
78 | ssize_t result; |
104 | ssize_t result; |
79 | |
105 | |
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106 | STRLEN dataoffset; |
80 | int type; |
107 | int type; |
81 | int fd, fd2; |
108 | int fd, fd2; |
82 | int errorno; |
109 | int errorno; |
83 | STRLEN dataoffset; |
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84 | mode_t mode; /* open */ |
110 | mode_t mode; /* open */ |
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111 | |
85 | 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; |
86 | } 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 | }; |
87 | |
122 | |
88 | typedef aio_cb *aio_req; |
123 | typedef aio_cb *aio_req; |
89 | typedef aio_cb *aio_req_ornot; |
124 | typedef aio_cb *aio_req_ornot; |
90 | typedef aio_cb *aio_group; |
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; |
91 | |
136 | |
92 | static int started, wanted; |
137 | static int started, wanted; |
93 | static volatile int nreqs; |
138 | static volatile int nreqs; |
94 | static int max_outstanding = 1<<30; |
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95 | static int respipe [2]; |
139 | static int respipe [2]; |
96 | |
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 | |
97 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
190 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
98 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
191 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
99 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
192 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
100 | |
193 | |
101 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
194 | /* |
102 | 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; |
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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); |
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250 | static void req_free (aio_req req); |
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251 | static void req_cancel (aio_req req); |
103 | |
252 | |
104 | /* must be called at most once */ |
253 | /* must be called at most once */ |
105 | static SV *req_sv (aio_req req, const char *klass) |
254 | static SV *req_sv (aio_req req, const char *klass) |
106 | { |
255 | { |
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256 | if (!req->self) |
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257 | { |
107 | req->self = (SV *)newHV (); |
258 | req->self = (SV *)newHV (); |
108 | 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 | } |
109 | |
261 | |
110 | return sv_2mortal (sv_bless (newRV_noinc (req->self), gv_stashpv (klass, 1))); |
262 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
111 | } |
263 | } |
112 | |
264 | |
113 | static aio_req SvAIO_REQ (SV *sv, const char *klass) |
265 | static aio_req SvAIO_REQ (SV *sv) |
114 | { |
266 | { |
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267 | MAGIC *mg; |
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268 | |
115 | if (!sv_derived_from (sv, klass) || !SvROK (sv)) |
269 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
116 | croak ("object of class %s expected", klass); |
270 | croak ("object of class " AIO_REQ_KLASS " expected"); |
117 | |
271 | |
118 | MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
272 | mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
119 | |
273 | |
120 | return mg ? (aio_req)mg->mg_ptr : 0; |
274 | return mg ? (aio_req)mg->mg_ptr : 0; |
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275 | } |
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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 | |
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323 | static void poll_wait () |
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324 | { |
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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 | |
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341 | FD_ZERO(&rfd); |
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342 | FD_SET(respipe [0], &rfd); |
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343 | |
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344 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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345 | } |
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346 | } |
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347 | |
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348 | static void req_invoke (aio_req req) |
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349 | { |
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350 | dSP; |
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351 | |
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352 | if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
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353 | { |
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354 | errno = req->errorno; |
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355 | |
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356 | ENTER; |
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357 | SAVETMPS; |
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358 | PUSHMARK (SP); |
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359 | EXTEND (SP, 1); |
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360 | |
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361 | switch (req->type) |
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362 | { |
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363 | case REQ_READDIR: |
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364 | { |
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365 | SV *rv = &PL_sv_undef; |
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366 | |
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367 | if (req->result >= 0) |
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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 | { |
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377 | SV *sv = newSVpv (buf, 0); |
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378 | |
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379 | av_store (av, i, sv); |
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380 | buf += SvCUR (sv) + 1; |
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381 | } |
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382 | |
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383 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
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384 | } |
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385 | |
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386 | PUSHs (rv); |
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387 | } |
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388 | break; |
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389 | |
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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; |
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428 | } |
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429 | |
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430 | |
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431 | PUTBACK; |
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432 | call_sv (req->callback, G_VOID | G_EVAL); |
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433 | SPAGAIN; |
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434 | |
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435 | FREETMPS; |
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436 | LEAVE; |
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437 | } |
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438 | |
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439 | if (req->grp) |
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440 | { |
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441 | aio_req grp = req->grp; |
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442 | |
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443 | /* unlink request */ |
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444 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
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445 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
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446 | |
|
|
447 | if (grp->grp_first == req) |
|
|
448 | grp->grp_first = req->grp_next; |
|
|
449 | |
|
|
450 | aio_grp_dec (grp); |
|
|
451 | } |
|
|
452 | |
|
|
453 | if (SvTRUE (ERRSV)) |
|
|
454 | { |
|
|
455 | req_free (req); |
|
|
456 | croak (0); |
|
|
457 | } |
121 | } |
458 | } |
122 | |
459 | |
123 | static void req_free (aio_req req) |
460 | static void req_free (aio_req req) |
124 | { |
461 | { |
125 | if (req->self) |
462 | if (req->self) |
126 | { |
463 | { |
127 | sv_unmagic (req->self, PERL_MAGIC_ext); |
464 | sv_unmagic (req->self, PERL_MAGIC_ext); |
128 | SvREFCNT_dec (req->self); |
465 | SvREFCNT_dec (req->self); |
129 | } |
466 | } |
130 | |
467 | |
131 | if (req->data) |
|
|
132 | SvREFCNT_dec (req->data); |
468 | SvREFCNT_dec (req->data); |
133 | |
|
|
134 | if (req->fh) |
|
|
135 | SvREFCNT_dec (req->fh); |
469 | SvREFCNT_dec (req->fh); |
136 | |
|
|
137 | if (req->fh2) |
|
|
138 | SvREFCNT_dec (req->fh2); |
470 | SvREFCNT_dec (req->fh2); |
139 | |
|
|
140 | if (req->statdata) |
|
|
141 | Safefree (req->statdata); |
|
|
142 | |
|
|
143 | if (req->callback) |
|
|
144 | SvREFCNT_dec (req->callback); |
471 | SvREFCNT_dec (req->callback); |
|
|
472 | Safefree (req->statdata); |
145 | |
473 | |
146 | if (req->type == REQ_READDIR && req->result >= 0) |
474 | if (req->type == REQ_READDIR) |
147 | free (req->data2ptr); |
475 | free (req->data2ptr); |
148 | |
476 | |
149 | Safefree (req); |
477 | Safefree (req); |
150 | } |
478 | } |
151 | |
479 | |
152 | static void |
480 | static void req_cancel_subs (aio_req grp) |
153 | poll_wait () |
|
|
154 | { |
481 | { |
155 | if (nreqs && !ress) |
482 | aio_req sub; |
156 | { |
|
|
157 | fd_set rfd; |
|
|
158 | FD_ZERO(&rfd); |
|
|
159 | FD_SET(respipe [0], &rfd); |
|
|
160 | |
483 | |
161 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
484 | if (grp->type != REQ_GROUP) |
162 | } |
485 | return; |
163 | } |
|
|
164 | |
486 | |
165 | static int |
487 | SvREFCNT_dec (grp->fh2); |
166 | poll_cb () |
488 | grp->fh2 = 0; |
|
|
489 | |
|
|
490 | for (sub = grp->grp_first; sub; sub = sub->grp_next) |
|
|
491 | req_cancel (sub); |
|
|
492 | } |
|
|
493 | |
|
|
494 | static void req_cancel (aio_req req) |
|
|
495 | { |
|
|
496 | req->flags |= FLAG_CANCELLED; |
|
|
497 | |
|
|
498 | req_cancel_subs (req); |
|
|
499 | } |
|
|
500 | |
|
|
501 | static int poll_cb (int max) |
167 | { |
502 | { |
168 | dSP; |
503 | dSP; |
169 | int count = 0; |
504 | int count = 0; |
170 | int do_croak = 0; |
505 | int do_croak = 0; |
171 | aio_req req; |
506 | aio_req req; |
172 | |
507 | |
173 | for (;;) |
508 | while (max <= 0 || count < max) |
174 | { |
509 | { |
175 | pthread_mutex_lock (&reslock); |
510 | LOCK (reslock); |
176 | req = ress; |
511 | req = reqq_shift (&res_queue); |
177 | |
512 | |
178 | if (req) |
513 | if (req) |
179 | { |
514 | { |
180 | ress = req->next; |
|
|
181 | |
|
|
182 | if (!ress) |
515 | if (!res_queue.size) |
183 | { |
516 | { |
184 | /* read any signals sent by the worker threads */ |
517 | /* read any signals sent by the worker threads */ |
185 | char buf [32]; |
518 | char buf [32]; |
186 | while (read (respipe [0], buf, 32) == 32) |
519 | while (read (respipe [0], buf, 32) == 32) |
187 | ; |
520 | ; |
188 | |
|
|
189 | rese = 0; |
|
|
190 | } |
521 | } |
191 | } |
522 | } |
192 | |
523 | |
193 | pthread_mutex_unlock (&reslock); |
524 | UNLOCK (reslock); |
194 | |
525 | |
195 | if (!req) |
526 | if (!req) |
196 | break; |
527 | break; |
197 | |
528 | |
198 | nreqs--; |
529 | --nreqs; |
199 | |
530 | |
200 | if (req->type == REQ_QUIT) |
531 | if (req->type == REQ_QUIT) |
201 | started--; |
532 | started--; |
|
|
533 | else if (req->type == REQ_GROUP && req->length) |
|
|
534 | { |
|
|
535 | req->fd = 1; /* mark request as delayed */ |
|
|
536 | continue; |
|
|
537 | } |
202 | else |
538 | else |
203 | { |
539 | { |
204 | int errorno = errno; |
|
|
205 | errno = req->errorno; |
|
|
206 | |
|
|
207 | if (req->type == REQ_READ) |
540 | if (req->type == REQ_READ) |
208 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
541 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
209 | |
542 | |
210 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
543 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
211 | SvREADONLY_off (req->data); |
544 | SvREADONLY_off (req->data); |
… | |
… | |
215 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
548 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
216 | PL_laststatval = req->result; |
549 | PL_laststatval = req->result; |
217 | PL_statcache = *(req->statdata); |
550 | PL_statcache = *(req->statdata); |
218 | } |
551 | } |
219 | |
552 | |
220 | ENTER; |
553 | req_invoke (req); |
221 | PUSHMARK (SP); |
|
|
222 | |
554 | |
223 | if (req->type == REQ_READDIR) |
|
|
224 | { |
|
|
225 | SV *rv = &PL_sv_undef; |
|
|
226 | |
|
|
227 | if (req->result >= 0) |
|
|
228 | { |
|
|
229 | char *buf = req->data2ptr; |
|
|
230 | AV *av = newAV (); |
|
|
231 | |
|
|
232 | while (req->result) |
|
|
233 | { |
|
|
234 | SV *sv = newSVpv (buf, 0); |
|
|
235 | |
|
|
236 | av_push (av, sv); |
|
|
237 | buf += SvCUR (sv) + 1; |
|
|
238 | req->result--; |
|
|
239 | } |
|
|
240 | |
|
|
241 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
|
|
242 | } |
|
|
243 | |
|
|
244 | XPUSHs (rv); |
|
|
245 | } |
|
|
246 | else |
|
|
247 | { |
|
|
248 | XPUSHs (sv_2mortal (newSViv (req->result))); |
|
|
249 | |
|
|
250 | if (req->type == REQ_OPEN) |
|
|
251 | { |
|
|
252 | /* convert fd to fh */ |
|
|
253 | SV *fh; |
|
|
254 | |
|
|
255 | PUTBACK; |
|
|
256 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
|
|
257 | SPAGAIN; |
|
|
258 | |
|
|
259 | fh = SvREFCNT_inc (POPs); |
|
|
260 | |
|
|
261 | PUSHMARK (SP); |
|
|
262 | XPUSHs (sv_2mortal (fh)); |
|
|
263 | } |
|
|
264 | } |
|
|
265 | |
|
|
266 | if (SvOK (req->callback) && !req->cancelled) |
|
|
267 | { |
|
|
268 | PUTBACK; |
|
|
269 | call_sv (req->callback, G_VOID | G_EVAL); |
|
|
270 | SPAGAIN; |
|
|
271 | |
|
|
272 | if (SvTRUE (ERRSV)) |
|
|
273 | { |
|
|
274 | req_free (req); |
|
|
275 | croak (0); |
|
|
276 | } |
|
|
277 | } |
|
|
278 | |
|
|
279 | LEAVE; |
|
|
280 | |
|
|
281 | errno = errorno; |
|
|
282 | count++; |
555 | count++; |
283 | } |
556 | } |
284 | |
557 | |
285 | req_free (req); |
558 | req_free (req); |
286 | } |
559 | } |
… | |
… | |
288 | return count; |
561 | return count; |
289 | } |
562 | } |
290 | |
563 | |
291 | static void *aio_proc(void *arg); |
564 | static void *aio_proc(void *arg); |
292 | |
565 | |
293 | static void |
|
|
294 | start_thread (void) |
566 | static void start_thread (void) |
295 | { |
567 | { |
296 | sigset_t fullsigset, oldsigset; |
568 | sigset_t fullsigset, oldsigset; |
297 | pthread_t tid; |
|
|
298 | 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"); |
299 | |
575 | |
300 | pthread_attr_init (&attr); |
576 | pthread_attr_init (&attr); |
301 | pthread_attr_setstacksize (&attr, STACKSIZE); |
577 | pthread_attr_setstacksize (&attr, STACKSIZE); |
302 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
578 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
303 | |
579 | |
304 | sigfillset (&fullsigset); |
580 | sigfillset (&fullsigset); |
|
|
581 | |
|
|
582 | LOCK (wrklock); |
305 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
583 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
306 | |
584 | |
307 | 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; |
308 | started++; |
591 | started++; |
|
|
592 | } |
|
|
593 | else |
|
|
594 | free (wrk); |
309 | |
595 | |
310 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
596 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
|
|
597 | UNLOCK (wrklock); |
311 | } |
598 | } |
312 | |
599 | |
313 | static void |
|
|
314 | req_send (aio_req req) |
600 | static void req_send (aio_req req) |
315 | { |
601 | { |
316 | while (started < wanted && nreqs >= started) |
602 | while (started < wanted && nreqs >= started) |
317 | start_thread (); |
603 | start_thread (); |
318 | |
604 | |
319 | nreqs++; |
605 | ++nreqs; |
320 | |
606 | |
321 | pthread_mutex_lock (&reqlock); |
607 | LOCK (reqlock); |
322 | |
608 | reqq_push (&req_queue, req); |
323 | req->next = 0; |
|
|
324 | |
|
|
325 | if (reqe) |
|
|
326 | { |
|
|
327 | reqe->next = req; |
|
|
328 | reqe = req; |
|
|
329 | } |
|
|
330 | else |
|
|
331 | reqe = reqs = req; |
|
|
332 | |
|
|
333 | pthread_cond_signal (&reqwait); |
609 | pthread_cond_signal (&reqwait); |
334 | pthread_mutex_unlock (&reqlock); |
610 | UNLOCK (reqlock); |
335 | |
|
|
336 | if (nreqs > max_outstanding) |
|
|
337 | for (;;) |
|
|
338 | { |
|
|
339 | poll_cb (); |
|
|
340 | |
|
|
341 | if (nreqs <= max_outstanding) |
|
|
342 | break; |
|
|
343 | |
|
|
344 | poll_wait (); |
|
|
345 | } |
|
|
346 | } |
611 | } |
347 | |
612 | |
348 | static void |
613 | static void end_thread (void) |
349 | end_thread (void) |
|
|
350 | { |
614 | { |
351 | aio_req req; |
615 | aio_req req; |
|
|
616 | |
352 | Newz (0, req, 1, aio_cb); |
617 | Newz (0, req, 1, aio_cb); |
|
|
618 | |
353 | req->type = REQ_QUIT; |
619 | req->type = REQ_QUIT; |
|
|
620 | req->pri = PRI_MAX + PRI_BIAS; |
354 | |
621 | |
355 | req_send (req); |
622 | req_send (req); |
356 | } |
623 | } |
357 | |
624 | |
358 | static void min_parallel (int nthreads) |
625 | static void min_parallel (int nthreads) |
… | |
… | |
375 | } |
642 | } |
376 | |
643 | |
377 | while (started > wanted) |
644 | while (started > wanted) |
378 | { |
645 | { |
379 | poll_wait (); |
646 | poll_wait (); |
380 | poll_cb (); |
647 | poll_cb (0); |
381 | } |
648 | } |
382 | } |
649 | } |
383 | |
650 | |
384 | static void create_pipe () |
651 | static void create_pipe () |
385 | { |
652 | { |
… | |
… | |
405 | * normal read/write by using a mutex. slows down execution a lot, |
672 | * normal read/write by using a mutex. slows down execution a lot, |
406 | * but that's your problem, not mine. |
673 | * but that's your problem, not mine. |
407 | */ |
674 | */ |
408 | static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
675 | static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
409 | |
676 | |
410 | static ssize_t |
677 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
411 | pread (int fd, void *buf, size_t count, off_t offset) |
|
|
412 | { |
678 | { |
413 | ssize_t res; |
679 | ssize_t res; |
414 | off_t ooffset; |
680 | off_t ooffset; |
415 | |
681 | |
416 | pthread_mutex_lock (&preadwritelock); |
682 | LOCK (preadwritelock); |
417 | ooffset = lseek (fd, 0, SEEK_CUR); |
683 | ooffset = lseek (fd, 0, SEEK_CUR); |
418 | lseek (fd, offset, SEEK_SET); |
684 | lseek (fd, offset, SEEK_SET); |
419 | res = read (fd, buf, count); |
685 | res = read (fd, buf, count); |
420 | lseek (fd, ooffset, SEEK_SET); |
686 | lseek (fd, ooffset, SEEK_SET); |
421 | pthread_mutex_unlock (&preadwritelock); |
687 | UNLOCK (preadwritelock); |
422 | |
688 | |
423 | return res; |
689 | return res; |
424 | } |
690 | } |
425 | |
691 | |
426 | static ssize_t |
|
|
427 | 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) |
428 | { |
693 | { |
429 | ssize_t res; |
694 | ssize_t res; |
430 | off_t ooffset; |
695 | off_t ooffset; |
431 | |
696 | |
432 | pthread_mutex_lock (&preadwritelock); |
697 | LOCK (preadwritelock); |
433 | ooffset = lseek (fd, 0, SEEK_CUR); |
698 | ooffset = lseek (fd, 0, SEEK_CUR); |
434 | lseek (fd, offset, SEEK_SET); |
699 | lseek (fd, offset, SEEK_SET); |
435 | res = write (fd, buf, count); |
700 | res = write (fd, buf, count); |
436 | lseek (fd, offset, SEEK_SET); |
701 | lseek (fd, offset, SEEK_SET); |
437 | pthread_mutex_unlock (&preadwritelock); |
702 | UNLOCK (preadwritelock); |
438 | |
703 | |
439 | return res; |
704 | return res; |
440 | } |
705 | } |
441 | #endif |
706 | #endif |
442 | |
707 | |
443 | #if !HAVE_FDATASYNC |
708 | #if !HAVE_FDATASYNC |
444 | # define fdatasync fsync |
709 | # define fdatasync fsync |
445 | #endif |
710 | #endif |
446 | |
711 | |
447 | #if !HAVE_READAHEAD |
712 | #if !HAVE_READAHEAD |
448 | # define readahead aio_readahead |
713 | # define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) |
449 | |
714 | |
450 | static ssize_t |
715 | static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) |
451 | readahead (int fd, off_t offset, size_t count) |
|
|
452 | { |
716 | { |
453 | char readahead_buf[4096]; |
717 | dBUF; |
454 | |
718 | |
455 | while (count > 0) |
719 | while (count > 0) |
456 | { |
720 | { |
457 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
721 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
458 | |
722 | |
459 | pread (fd, readahead_buf, len, offset); |
723 | pread (fd, aio_buf, len, offset); |
460 | offset += len; |
724 | offset += len; |
461 | count -= len; |
725 | count -= len; |
462 | } |
726 | } |
463 | |
727 | |
464 | errno = 0; |
728 | errno = 0; |
465 | } |
729 | } |
|
|
730 | |
466 | #endif |
731 | #endif |
467 | |
732 | |
468 | #if !HAVE_READDIR_R |
733 | #if !HAVE_READDIR_R |
469 | # define readdir_r aio_readdir_r |
734 | # define readdir_r aio_readdir_r |
470 | |
735 | |
471 | static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
736 | static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
472 | |
737 | |
473 | static int |
|
|
474 | readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
738 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
475 | { |
739 | { |
476 | struct dirent *e; |
740 | struct dirent *e; |
477 | int errorno; |
741 | int errorno; |
478 | |
742 | |
479 | pthread_mutex_lock (&readdirlock); |
743 | LOCK (readdirlock); |
480 | |
744 | |
481 | e = readdir (dirp); |
745 | e = readdir (dirp); |
482 | errorno = errno; |
746 | errorno = errno; |
483 | |
747 | |
484 | if (e) |
748 | if (e) |
… | |
… | |
487 | strcpy (ent->d_name, e->d_name); |
751 | strcpy (ent->d_name, e->d_name); |
488 | } |
752 | } |
489 | else |
753 | else |
490 | *res = 0; |
754 | *res = 0; |
491 | |
755 | |
492 | pthread_mutex_unlock (&readdirlock); |
756 | UNLOCK (readdirlock); |
493 | |
757 | |
494 | errno = errorno; |
758 | errno = errorno; |
495 | return e ? 0 : -1; |
759 | return e ? 0 : -1; |
496 | } |
760 | } |
497 | #endif |
761 | #endif |
498 | |
762 | |
499 | /* sendfile always needs emulation */ |
763 | /* sendfile always needs emulation */ |
500 | static ssize_t |
|
|
501 | 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) |
502 | { |
765 | { |
503 | ssize_t res; |
766 | ssize_t res; |
504 | |
767 | |
505 | if (!count) |
768 | if (!count) |
506 | return 0; |
769 | return 0; |
… | |
… | |
517 | { |
780 | { |
518 | off_t sbytes; |
781 | off_t sbytes; |
519 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
782 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
520 | |
783 | |
521 | if (res < 0 && sbytes) |
784 | if (res < 0 && sbytes) |
522 | /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ |
785 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
523 | res = sbytes; |
786 | res = sbytes; |
524 | } |
787 | } |
525 | |
788 | |
526 | # elif __hpux |
789 | # elif __hpux |
527 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
790 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
… | |
… | |
555 | #endif |
818 | #endif |
556 | ) |
819 | ) |
557 | ) |
820 | ) |
558 | { |
821 | { |
559 | /* emulate sendfile. this is a major pain in the ass */ |
822 | /* emulate sendfile. this is a major pain in the ass */ |
560 | char buf[4096]; |
823 | dBUF; |
|
|
824 | |
561 | res = 0; |
825 | res = 0; |
562 | |
826 | |
563 | while (count) |
827 | while (count) |
564 | { |
828 | { |
565 | ssize_t cnt; |
829 | ssize_t cnt; |
566 | |
830 | |
567 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
831 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
568 | |
832 | |
569 | if (cnt <= 0) |
833 | if (cnt <= 0) |
570 | { |
834 | { |
571 | if (cnt && !res) res = -1; |
835 | if (cnt && !res) res = -1; |
572 | break; |
836 | break; |
573 | } |
837 | } |
574 | |
838 | |
575 | cnt = write (ofd, buf, cnt); |
839 | cnt = write (ofd, aio_buf, cnt); |
576 | |
840 | |
577 | if (cnt <= 0) |
841 | if (cnt <= 0) |
578 | { |
842 | { |
579 | if (cnt && !res) res = -1; |
843 | if (cnt && !res) res = -1; |
580 | break; |
844 | break; |
… | |
… | |
588 | |
852 | |
589 | return res; |
853 | return res; |
590 | } |
854 | } |
591 | |
855 | |
592 | /* read a full directory */ |
856 | /* read a full directory */ |
593 | static int |
857 | static void scandir_ (aio_req req, worker *self) |
594 | scandir_ (const char *path, void **namesp) |
|
|
595 | { |
858 | { |
596 | DIR *dirp = opendir (path); |
859 | DIR *dirp; |
597 | union |
860 | union |
598 | { |
861 | { |
599 | struct dirent d; |
862 | struct dirent d; |
600 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
863 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
601 | } u; |
864 | } *u; |
602 | struct dirent *entp; |
865 | struct dirent *entp; |
603 | char *name, *names; |
866 | char *name, *names; |
604 | int memlen = 4096; |
867 | int memlen = 4096; |
605 | int memofs = 0; |
868 | int memofs = 0; |
606 | int res = 0; |
869 | int res = 0; |
607 | int errorno; |
870 | int errorno; |
608 | |
871 | |
609 | if (!dirp) |
872 | LOCK (wrklock); |
610 | return -1; |
873 | self->dirp = dirp = opendir (req->dataptr); |
611 | |
874 | self->dbuf = u = malloc (sizeof (*u)); |
612 | names = malloc (memlen); |
875 | req->data2ptr = names = malloc (memlen); |
|
|
876 | UNLOCK (wrklock); |
613 | |
877 | |
|
|
878 | if (dirp && u && names) |
614 | for (;;) |
879 | for (;;) |
615 | { |
880 | { |
|
|
881 | errno = 0; |
616 | errno = 0, readdir_r (dirp, &u.d, &entp); |
882 | readdir_r (dirp, &u->d, &entp); |
617 | |
883 | |
618 | if (!entp) |
884 | if (!entp) |
619 | break; |
885 | break; |
620 | |
886 | |
621 | name = entp->d_name; |
887 | name = entp->d_name; |
622 | |
888 | |
623 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
889 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
624 | { |
890 | { |
625 | int len = strlen (name) + 1; |
891 | int len = strlen (name) + 1; |
626 | |
892 | |
627 | res++; |
893 | res++; |
628 | |
894 | |
629 | while (memofs + len > memlen) |
895 | while (memofs + len > memlen) |
630 | { |
896 | { |
631 | memlen *= 2; |
897 | memlen *= 2; |
|
|
898 | LOCK (wrklock); |
632 | names = realloc (names, memlen); |
899 | req->data2ptr = names = realloc (names, memlen); |
|
|
900 | UNLOCK (wrklock); |
|
|
901 | |
633 | if (!names) |
902 | if (!names) |
634 | break; |
903 | break; |
635 | } |
904 | } |
636 | |
905 | |
637 | memcpy (names + memofs, name, len); |
906 | memcpy (names + memofs, name, len); |
638 | memofs += len; |
907 | memofs += len; |
639 | } |
908 | } |
640 | } |
909 | } |
641 | |
910 | |
642 | errorno = errno; |
|
|
643 | closedir (dirp); |
|
|
644 | |
|
|
645 | if (errorno) |
911 | if (errno) |
646 | { |
|
|
647 | free (names); |
|
|
648 | errno = errorno; |
|
|
649 | res = -1; |
912 | res = -1; |
650 | } |
913 | |
651 | |
914 | req->result = res; |
652 | *namesp = (void *)names; |
|
|
653 | return res; |
|
|
654 | } |
915 | } |
655 | |
916 | |
656 | /*****************************************************************************/ |
917 | /*****************************************************************************/ |
657 | |
918 | |
658 | static void * |
|
|
659 | aio_proc (void *thr_arg) |
919 | static void *aio_proc (void *thr_arg) |
660 | { |
920 | { |
661 | aio_req req; |
921 | aio_req req; |
662 | int type; |
922 | int type; |
|
|
923 | worker *self = (worker *)thr_arg; |
663 | |
924 | |
664 | do |
925 | do |
665 | { |
926 | { |
666 | pthread_mutex_lock (&reqlock); |
927 | LOCK (reqlock); |
667 | |
928 | |
668 | for (;;) |
929 | for (;;) |
669 | { |
930 | { |
670 | req = reqs; |
931 | self->req = req = reqq_shift (&req_queue); |
671 | |
|
|
672 | if (reqs) |
|
|
673 | { |
|
|
674 | reqs = reqs->next; |
|
|
675 | if (!reqs) reqe = 0; |
|
|
676 | } |
|
|
677 | |
932 | |
678 | if (req) |
933 | if (req) |
679 | break; |
934 | break; |
680 | |
935 | |
681 | pthread_cond_wait (&reqwait, &reqlock); |
936 | pthread_cond_wait (&reqwait, &reqlock); |
682 | } |
937 | } |
683 | |
938 | |
684 | pthread_mutex_unlock (&reqlock); |
939 | UNLOCK (reqlock); |
685 | |
940 | |
686 | errno = 0; /* strictly unnecessary */ |
941 | errno = 0; /* strictly unnecessary */ |
|
|
942 | type = req->type; /* remember type for QUIT check */ |
687 | |
943 | |
688 | if (!req->cancelled) |
944 | if (!(req->flags & FLAG_CANCELLED)) |
689 | switch (req->type) |
945 | switch (type) |
690 | { |
946 | { |
691 | 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; |
692 | 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; |
693 | |
949 | |
694 | 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; |
695 | 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; |
696 | |
952 | |
697 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
953 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
698 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
954 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
699 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
955 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
700 | |
956 | |
… | |
… | |
706 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
962 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
707 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
963 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
708 | |
964 | |
709 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
965 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
710 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
966 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
711 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
967 | case REQ_READDIR: scandir_ (req, self); break; |
712 | |
968 | |
|
|
969 | case REQ_BUSY: |
|
|
970 | { |
|
|
971 | struct timeval tv; |
|
|
972 | |
|
|
973 | tv.tv_sec = req->fd; |
|
|
974 | tv.tv_usec = req->fd2; |
|
|
975 | |
|
|
976 | req->result = select (0, 0, 0, 0, &tv); |
|
|
977 | } |
|
|
978 | |
|
|
979 | case REQ_GROUP: |
|
|
980 | case REQ_NOP: |
713 | case REQ_QUIT: |
981 | case REQ_QUIT: |
714 | break; |
982 | break; |
715 | |
983 | |
716 | default: |
984 | default: |
717 | req->result = ENOSYS; |
985 | req->result = ENOSYS; |
718 | break; |
986 | break; |
719 | } |
987 | } |
720 | |
988 | |
721 | req->errorno = errno; |
989 | req->errorno = errno; |
722 | |
990 | |
723 | pthread_mutex_lock (&reslock); |
991 | LOCK (reslock); |
724 | |
992 | |
725 | req->next = 0; |
993 | if (!reqq_push (&res_queue, req)) |
726 | |
|
|
727 | if (rese) |
|
|
728 | { |
|
|
729 | rese->next = req; |
|
|
730 | rese = req; |
|
|
731 | } |
|
|
732 | else |
|
|
733 | { |
|
|
734 | rese = ress = req; |
|
|
735 | |
|
|
736 | /* write a dummy byte to the pipe so fh becomes ready */ |
994 | /* write a dummy byte to the pipe so fh becomes ready */ |
737 | write (respipe [1], &respipe, 1); |
995 | write (respipe [1], &respipe, 1); |
738 | } |
|
|
739 | |
996 | |
740 | pthread_mutex_unlock (&reslock); |
997 | self->req = 0; |
|
|
998 | worker_clear (self); |
|
|
999 | |
|
|
1000 | UNLOCK (reslock); |
741 | } |
1001 | } |
742 | while (type != REQ_QUIT); |
1002 | while (type != REQ_QUIT); |
743 | |
1003 | |
|
|
1004 | LOCK (wrklock); |
|
|
1005 | worker_free (self); |
|
|
1006 | UNLOCK (wrklock); |
|
|
1007 | |
744 | return 0; |
1008 | return 0; |
745 | } |
1009 | } |
746 | |
1010 | |
747 | /*****************************************************************************/ |
1011 | /*****************************************************************************/ |
748 | |
1012 | |
749 | static void atfork_prepare (void) |
1013 | static void atfork_prepare (void) |
750 | { |
1014 | { |
751 | pthread_mutex_lock (&reqlock); |
1015 | LOCK (wrklock); |
752 | pthread_mutex_lock (&reslock); |
1016 | LOCK (reqlock); |
|
|
1017 | LOCK (reslock); |
753 | #if !HAVE_PREADWRITE |
1018 | #if !HAVE_PREADWRITE |
754 | pthread_mutex_lock (&preadwritelock); |
1019 | LOCK (preadwritelock); |
755 | #endif |
1020 | #endif |
756 | #if !HAVE_READDIR_R |
1021 | #if !HAVE_READDIR_R |
757 | pthread_mutex_lock (&readdirlock); |
1022 | LOCK (readdirlock); |
758 | #endif |
1023 | #endif |
759 | } |
1024 | } |
760 | |
1025 | |
761 | static void atfork_parent (void) |
1026 | static void atfork_parent (void) |
762 | { |
1027 | { |
763 | #if !HAVE_READDIR_R |
1028 | #if !HAVE_READDIR_R |
764 | pthread_mutex_unlock (&readdirlock); |
1029 | UNLOCK (readdirlock); |
765 | #endif |
1030 | #endif |
766 | #if !HAVE_PREADWRITE |
1031 | #if !HAVE_PREADWRITE |
767 | pthread_mutex_unlock (&preadwritelock); |
1032 | UNLOCK (preadwritelock); |
768 | #endif |
1033 | #endif |
769 | pthread_mutex_unlock (&reslock); |
1034 | UNLOCK (reslock); |
770 | pthread_mutex_unlock (&reqlock); |
1035 | UNLOCK (reqlock); |
|
|
1036 | UNLOCK (wrklock); |
771 | } |
1037 | } |
772 | |
1038 | |
773 | static void atfork_child (void) |
1039 | static void atfork_child (void) |
774 | { |
1040 | { |
775 | aio_req prv; |
1041 | aio_req prv; |
776 | |
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 | |
777 | started = 0; |
1060 | started = 0; |
778 | |
1061 | nreqs = 0; |
779 | while (reqs) |
|
|
780 | { |
|
|
781 | prv = reqs; |
|
|
782 | reqs = prv->next; |
|
|
783 | req_free (prv); |
|
|
784 | } |
|
|
785 | |
|
|
786 | reqs = reqe = 0; |
|
|
787 | |
|
|
788 | while (ress) |
|
|
789 | { |
|
|
790 | prv = ress; |
|
|
791 | ress = prv->next; |
|
|
792 | req_free (prv); |
|
|
793 | } |
|
|
794 | |
|
|
795 | ress = rese = 0; |
|
|
796 | |
1062 | |
797 | close (respipe [0]); |
1063 | close (respipe [0]); |
798 | close (respipe [1]); |
1064 | close (respipe [1]); |
799 | create_pipe (); |
1065 | create_pipe (); |
800 | |
1066 | |
801 | atfork_parent (); |
1067 | atfork_parent (); |
802 | } |
1068 | } |
803 | |
1069 | |
804 | #define dREQ \ |
1070 | #define dREQ \ |
805 | aio_req req; \ |
1071 | aio_req req; \ |
|
|
1072 | int req_pri = next_pri; \ |
|
|
1073 | next_pri = DEFAULT_PRI + PRI_BIAS; \ |
806 | \ |
1074 | \ |
807 | if (SvOK (callback) && !SvROK (callback)) \ |
1075 | if (SvOK (callback) && !SvROK (callback)) \ |
808 | croak ("callback must be undef or of reference type"); \ |
1076 | croak ("callback must be undef or of reference type"); \ |
809 | \ |
1077 | \ |
810 | Newz (0, req, 1, aio_cb); \ |
1078 | Newz (0, req, 1, aio_cb); \ |
811 | if (!req) \ |
1079 | if (!req) \ |
812 | croak ("out of memory during aio_req allocation"); \ |
1080 | croak ("out of memory during aio_req allocation"); \ |
813 | \ |
1081 | \ |
814 | req->callback = newSVsv (callback) |
1082 | req->callback = newSVsv (callback); \ |
|
|
1083 | req->pri = req_pri |
815 | |
1084 | |
816 | #define REQ_SEND \ |
1085 | #define REQ_SEND \ |
817 | req_send (req); \ |
1086 | req_send (req); \ |
818 | \ |
1087 | \ |
819 | if (GIMME_V != G_VOID) \ |
1088 | if (GIMME_V != G_VOID) \ |
… | |
… | |
841 | |
1110 | |
842 | void |
1111 | void |
843 | max_parallel (nthreads) |
1112 | max_parallel (nthreads) |
844 | int nthreads |
1113 | int nthreads |
845 | PROTOTYPE: $ |
1114 | PROTOTYPE: $ |
846 | |
|
|
847 | int |
|
|
848 | max_outstanding (nreqs) |
|
|
849 | int nreqs |
|
|
850 | PROTOTYPE: $ |
|
|
851 | CODE: |
|
|
852 | RETVAL = max_outstanding; |
|
|
853 | max_outstanding = nreqs; |
|
|
854 | |
1115 | |
855 | void |
1116 | void |
856 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
1117 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
857 | SV * pathname |
1118 | SV * pathname |
858 | int flags |
1119 | int flags |
… | |
… | |
1073 | |
1334 | |
1074 | REQ_SEND; |
1335 | REQ_SEND; |
1075 | } |
1336 | } |
1076 | |
1337 | |
1077 | void |
1338 | void |
|
|
1339 | aio_busy (delay,callback=&PL_sv_undef) |
|
|
1340 | double delay |
|
|
1341 | SV * callback |
|
|
1342 | PPCODE: |
|
|
1343 | { |
|
|
1344 | dREQ; |
|
|
1345 | |
|
|
1346 | req->type = REQ_BUSY; |
|
|
1347 | req->fd = delay < 0. ? 0 : delay; |
|
|
1348 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
|
|
1349 | |
|
|
1350 | REQ_SEND; |
|
|
1351 | } |
|
|
1352 | |
|
|
1353 | void |
1078 | aio_group (callback=&PL_sv_undef) |
1354 | aio_group (callback=&PL_sv_undef) |
1079 | SV * callback |
1355 | SV * callback |
1080 | PROTOTYPE: ;& |
1356 | PROTOTYPE: ;$ |
1081 | PPCODE: |
1357 | PPCODE: |
1082 | { |
1358 | { |
1083 | dREQ; |
1359 | dREQ; |
|
|
1360 | |
1084 | req->type = REQ_GROUP; |
1361 | req->type = REQ_GROUP; |
|
|
1362 | req_send (req); |
|
|
1363 | |
1085 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1364 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1086 | } |
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; |
1087 | |
1393 | |
1088 | void |
1394 | void |
1089 | flush () |
1395 | flush () |
1090 | PROTOTYPE: |
1396 | PROTOTYPE: |
1091 | CODE: |
1397 | CODE: |
1092 | while (nreqs) |
1398 | while (nreqs) |
1093 | { |
1399 | { |
1094 | poll_wait (); |
1400 | poll_wait (); |
1095 | poll_cb (); |
1401 | poll_cb (0); |
1096 | } |
1402 | } |
1097 | |
1403 | |
1098 | void |
1404 | void |
1099 | poll() |
1405 | poll() |
1100 | PROTOTYPE: |
1406 | PROTOTYPE: |
1101 | CODE: |
1407 | CODE: |
1102 | if (nreqs) |
1408 | if (nreqs) |
1103 | { |
1409 | { |
1104 | poll_wait (); |
1410 | poll_wait (); |
1105 | poll_cb (); |
1411 | poll_cb (0); |
1106 | } |
1412 | } |
1107 | |
1413 | |
1108 | int |
1414 | int |
1109 | poll_fileno() |
1415 | poll_fileno() |
1110 | PROTOTYPE: |
1416 | PROTOTYPE: |
… | |
… | |
1115 | |
1421 | |
1116 | int |
1422 | int |
1117 | poll_cb(...) |
1423 | poll_cb(...) |
1118 | PROTOTYPE: |
1424 | PROTOTYPE: |
1119 | CODE: |
1425 | CODE: |
1120 | 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); |
1121 | OUTPUT: |
1435 | OUTPUT: |
1122 | RETVAL |
1436 | RETVAL |
1123 | |
1437 | |
1124 | void |
1438 | void |
1125 | poll_wait() |
1439 | poll_wait() |
… | |
… | |
1134 | CODE: |
1448 | CODE: |
1135 | RETVAL = nreqs; |
1449 | RETVAL = nreqs; |
1136 | OUTPUT: |
1450 | OUTPUT: |
1137 | RETVAL |
1451 | RETVAL |
1138 | |
1452 | |
|
|
1453 | PROTOTYPES: DISABLE |
|
|
1454 | |
1139 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1455 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1140 | |
1456 | |
1141 | void |
1457 | void |
1142 | cancel (aio_req_ornot req) |
1458 | cancel (aio_req_ornot req) |
1143 | PROTOTYPE: |
|
|
1144 | CODE: |
1459 | CODE: |
1145 | req->cancelled = 1; |
1460 | req_cancel (req); |
1146 | |
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 | |
|
|
1468 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
|
|
1469 | |
|
|
1470 | void |
|
|
1471 | add (aio_req grp, ...) |
|
|
1472 | PPCODE: |
|
|
1473 | { |
|
|
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"); |
|
|
1479 | |
|
|
1480 | for (i = 1; i < items; ++i ) |
|
|
1481 | { |
|
|
1482 | if (GIMME_V != G_VOID) |
|
|
1483 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
|
|
1484 | |
|
|
1485 | req = SvAIO_REQ (ST (i)); |
|
|
1486 | |
|
|
1487 | if (req) |
|
|
1488 | { |
|
|
1489 | ++grp->length; |
|
|
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; |
|
|
1499 | } |
|
|
1500 | } |
|
|
1501 | } |
|
|
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 | |