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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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39 | /* used for struct dirent, AIX doesn't provide it */ |
48 | /* used for struct dirent, AIX doesn't provide it */ |
40 | #ifndef NAME_MAX |
49 | #ifndef NAME_MAX |
41 | # define NAME_MAX 4096 |
50 | # define NAME_MAX 4096 |
42 | #endif |
51 | #endif |
43 | |
52 | |
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53 | #ifndef PTHREAD_STACK_MIN |
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54 | /* care for broken platforms, e.g. windows */ |
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55 | # define PTHREAD_STACK_MIN 16384 |
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56 | #endif |
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57 | |
44 | #if __ia64 |
58 | #if __ia64 |
45 | # define STACKSIZE 65536 |
59 | # define STACKSIZE 65536 |
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60 | #elif __i386 || __x86_64 /* 16k is unreasonably high :( */ |
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61 | # define STACKSIZE PTHREAD_STACK_MIN |
46 | #else |
62 | #else |
47 | # define STACKSIZE 8192 |
63 | # define STACKSIZE 16384 |
48 | #endif |
64 | #endif |
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65 | |
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66 | /* wether word reads are potentially non-atomic. |
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67 | * this is conservatice, likely most arches this runs |
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68 | * on have atomic word read/writes. |
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69 | */ |
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70 | #ifndef WORDREAD_UNSAFE |
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71 | # if __i386 || __x86_64 |
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72 | # define WORDREAD_UNSAFE 0 |
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73 | # else |
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74 | # define WORDREAD_UNSAFE 1 |
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75 | # endif |
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76 | #endif |
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77 | |
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78 | /* buffer size for various temporary buffers */ |
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79 | #define AIO_BUFSIZE 65536 |
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80 | |
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81 | #define dBUF \ |
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82 | char *aio_buf; \ |
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83 | LOCK (wrklock); \ |
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84 | self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ |
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85 | UNLOCK (wrklock); \ |
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86 | if (!aio_buf) \ |
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87 | return -1; |
49 | |
88 | |
50 | enum { |
89 | enum { |
51 | REQ_QUIT, |
90 | REQ_QUIT, |
52 | REQ_OPEN, REQ_CLOSE, |
91 | REQ_OPEN, REQ_CLOSE, |
53 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
92 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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55 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
94 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
56 | REQ_FSYNC, REQ_FDATASYNC, |
95 | REQ_FSYNC, REQ_FDATASYNC, |
57 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
96 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
58 | REQ_READDIR, |
97 | REQ_READDIR, |
59 | REQ_LINK, REQ_SYMLINK, |
98 | REQ_LINK, REQ_SYMLINK, |
60 | REQ_SLEEP, |
99 | REQ_GROUP, REQ_NOP, |
61 | REQ_GROUP, |
100 | REQ_BUSY, |
62 | }; |
101 | }; |
63 | |
102 | |
64 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
103 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
65 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
104 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
66 | |
105 | |
67 | typedef struct aio_cb |
106 | typedef struct aio_cb |
68 | { |
107 | { |
69 | struct aio_cb *grp, *grp_prev, *grp_next; |
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70 | |
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71 | struct aio_cb *volatile next; |
108 | 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 | |
109 | |
75 | SV *data, *callback; |
110 | SV *data, *callback; |
76 | SV *fh, *fh2; |
111 | SV *fh, *fh2; |
77 | void *dataptr, *data2ptr; |
112 | void *dataptr, *data2ptr; |
78 | Stat_t *statdata; |
113 | Stat_t *statdata; |
79 | off_t offset; |
114 | off_t offset; |
80 | size_t length; |
115 | size_t length; |
81 | ssize_t result; |
116 | ssize_t result; |
82 | |
117 | |
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118 | STRLEN dataoffset; |
83 | int type; |
119 | int type; |
84 | int fd, fd2; |
120 | int fd, fd2; |
85 | int errorno; |
121 | int errorno; |
86 | STRLEN dataoffset; |
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87 | mode_t mode; /* open */ |
122 | mode_t mode; /* open */ |
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123 | |
88 | unsigned char cancelled; |
124 | unsigned char flags; |
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125 | unsigned char pri; |
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126 | |
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127 | SV *self; /* the perl counterpart of this request, if any */ |
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128 | struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; |
89 | } aio_cb; |
129 | } aio_cb; |
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130 | |
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131 | enum { |
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132 | FLAG_CANCELLED = 0x01, |
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133 | }; |
90 | |
134 | |
91 | typedef aio_cb *aio_req; |
135 | typedef aio_cb *aio_req; |
92 | typedef aio_cb *aio_req_ornot; |
136 | typedef aio_cb *aio_req_ornot; |
93 | typedef aio_cb *aio_group; |
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94 | |
137 | |
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138 | enum { |
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139 | PRI_MIN = -4, |
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140 | PRI_MAX = 4, |
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141 | |
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142 | DEFAULT_PRI = 0, |
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143 | PRI_BIAS = -PRI_MIN, |
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144 | NUM_PRI = PRI_MAX + PRI_BIAS + 1, |
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145 | }; |
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146 | |
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147 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
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148 | |
95 | static int started, wanted; |
149 | static unsigned int started, wanted; |
96 | static volatile int nreqs; |
150 | static volatile unsigned int nreqs, nready, npending; |
97 | static int max_outstanding = 1<<30; |
151 | static volatile unsigned int max_outstanding = 0xffffffff; |
98 | static int respipe [2]; |
152 | static int respipe [2]; |
99 | |
153 | |
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154 | #if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
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155 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
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156 | #else |
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157 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
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158 | #endif |
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159 | |
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160 | #define LOCK(mutex) pthread_mutex_lock (&(mutex)) |
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161 | #define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) |
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162 | |
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163 | /* worker threads management */ |
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164 | static pthread_mutex_t wrklock = AIO_MUTEX_INIT; |
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165 | |
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166 | typedef struct worker { |
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167 | /* locked by wrklock */ |
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168 | struct worker *prev, *next; |
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169 | |
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170 | pthread_t tid; |
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171 | |
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172 | /* locked by reslock, reqlock or wrklock */ |
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173 | aio_req req; /* currently processed request */ |
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174 | void *dbuf; |
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175 | DIR *dirp; |
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176 | } worker; |
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177 | |
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178 | static worker wrk_first = { &wrk_first, &wrk_first, 0 }; |
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179 | |
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180 | static void worker_clear (worker *wrk) |
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181 | { |
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182 | if (wrk->dirp) |
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183 | { |
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184 | closedir (wrk->dirp); |
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185 | wrk->dirp = 0; |
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186 | } |
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187 | |
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188 | if (wrk->dbuf) |
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189 | { |
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190 | free (wrk->dbuf); |
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191 | wrk->dbuf = 0; |
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192 | } |
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193 | } |
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194 | |
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195 | static void worker_free (worker *wrk) |
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196 | { |
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197 | wrk->next->prev = wrk->prev; |
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198 | wrk->prev->next = wrk->next; |
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199 | |
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200 | free (wrk); |
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201 | } |
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202 | |
100 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
203 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
101 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
204 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
102 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
205 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
103 | |
206 | |
104 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
207 | /* |
105 | static volatile aio_req ress, rese; /* queue start, queue end */ |
208 | * a somewhat faster data structure might be nice, but |
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209 | * with 8 priorities this actually needs <20 insns |
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210 | * per shift, the most expensive operation. |
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211 | */ |
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212 | typedef struct { |
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213 | aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */ |
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214 | int size; |
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215 | } reqq; |
106 | |
216 | |
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217 | static reqq req_queue; |
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218 | static reqq res_queue; |
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219 | |
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220 | int reqq_push (reqq *q, aio_req req) |
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221 | { |
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222 | int pri = req->pri; |
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223 | req->next = 0; |
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224 | |
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225 | if (q->qe[pri]) |
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226 | { |
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227 | q->qe[pri]->next = req; |
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228 | q->qe[pri] = req; |
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229 | } |
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230 | else |
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231 | q->qe[pri] = q->qs[pri] = req; |
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232 | |
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233 | return q->size++; |
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234 | } |
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235 | |
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236 | aio_req reqq_shift (reqq *q) |
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237 | { |
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238 | int pri; |
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239 | |
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240 | if (!q->size) |
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241 | return 0; |
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242 | |
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243 | --q->size; |
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244 | |
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245 | for (pri = NUM_PRI; pri--; ) |
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246 | { |
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247 | aio_req req = q->qs[pri]; |
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248 | |
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249 | if (req) |
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250 | { |
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251 | if (!(q->qs[pri] = req->next)) |
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252 | q->qe[pri] = 0; |
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253 | |
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254 | return req; |
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255 | } |
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256 | } |
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257 | |
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258 | abort (); |
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259 | } |
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260 | |
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261 | static int poll_cb (int max); |
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262 | static void req_invoke (aio_req req); |
107 | static void req_free (aio_req req); |
263 | static void req_free (aio_req req); |
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264 | static void req_cancel (aio_req req); |
108 | |
265 | |
109 | /* must be called at most once */ |
266 | /* must be called at most once */ |
110 | static SV *req_sv (aio_req req, const char *klass) |
267 | static SV *req_sv (aio_req req, const char *klass) |
111 | { |
268 | { |
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269 | if (!req->self) |
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270 | { |
112 | req->self = (SV *)newHV (); |
271 | req->self = (SV *)newHV (); |
113 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
272 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
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273 | } |
114 | |
274 | |
115 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
275 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
116 | } |
276 | } |
117 | |
277 | |
118 | static aio_req SvAIO_REQ (SV *sv) |
278 | static aio_req SvAIO_REQ (SV *sv) |
119 | { |
279 | { |
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280 | MAGIC *mg; |
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281 | |
120 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
282 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
121 | croak ("object of class " AIO_REQ_KLASS " expected"); |
283 | croak ("object of class " AIO_REQ_KLASS " expected"); |
122 | |
284 | |
123 | MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
285 | mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
124 | |
286 | |
125 | return mg ? (aio_req)mg->mg_ptr : 0; |
287 | return mg ? (aio_req)mg->mg_ptr : 0; |
126 | } |
288 | } |
127 | |
289 | |
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290 | static void aio_grp_feed (aio_req grp) |
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291 | { |
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292 | while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) |
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293 | { |
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294 | int old_len = grp->length; |
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295 | |
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296 | if (grp->fh2 && SvOK (grp->fh2)) |
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297 | { |
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298 | dSP; |
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299 | |
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300 | ENTER; |
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301 | SAVETMPS; |
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302 | PUSHMARK (SP); |
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303 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
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304 | PUTBACK; |
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305 | call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); |
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306 | SPAGAIN; |
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307 | FREETMPS; |
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308 | LEAVE; |
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309 | } |
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310 | |
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311 | /* stop if no progress has been made */ |
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312 | if (old_len == grp->length) |
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313 | { |
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314 | SvREFCNT_dec (grp->fh2); |
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315 | grp->fh2 = 0; |
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316 | break; |
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317 | } |
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318 | } |
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319 | } |
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320 | |
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321 | static void aio_grp_dec (aio_req grp) |
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322 | { |
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323 | --grp->length; |
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324 | |
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325 | /* call feeder, if applicable */ |
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326 | aio_grp_feed (grp); |
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327 | |
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328 | /* finish, if done */ |
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329 | if (!grp->length && grp->fd) |
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330 | { |
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331 | req_invoke (grp); |
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332 | req_free (grp); |
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333 | } |
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334 | } |
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335 | |
128 | static void poll_wait () |
336 | static void poll_wait () |
129 | { |
337 | { |
130 | if (nreqs && !ress) |
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131 | { |
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132 | fd_set rfd; |
338 | fd_set rfd; |
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339 | |
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340 | while (nreqs) |
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341 | { |
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342 | int size; |
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343 | if (WORDREAD_UNSAFE) LOCK (reslock); |
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344 | size = res_queue.size; |
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345 | if (WORDREAD_UNSAFE) UNLOCK (reslock); |
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346 | |
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347 | if (size) |
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348 | return; |
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349 | |
133 | FD_ZERO(&rfd); |
350 | FD_ZERO(&rfd); |
134 | FD_SET(respipe [0], &rfd); |
351 | FD_SET(respipe [0], &rfd); |
135 | |
352 | |
136 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
353 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
137 | } |
354 | } |
138 | } |
355 | } |
139 | |
356 | |
140 | static void req_invoke (aio_req req) |
357 | static void req_invoke (aio_req req) |
141 | { |
358 | { |
142 | dSP; |
359 | dSP; |
143 | int errorno = errno; |
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144 | |
360 | |
145 | if (req->cancelled || !SvOK (req->callback)) |
361 | if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
146 | return; |
362 | { |
147 | |
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148 | errno = req->errorno; |
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149 | |
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150 | ENTER; |
363 | ENTER; |
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364 | SAVETMPS; |
151 | PUSHMARK (SP); |
365 | PUSHMARK (SP); |
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366 | EXTEND (SP, 1); |
152 | |
367 | |
153 | switch (req->type) |
368 | switch (req->type) |
154 | { |
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155 | case REQ_READDIR: |
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156 | { |
369 | { |
157 | SV *rv = &PL_sv_undef; |
370 | case REQ_READDIR: |
158 | |
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159 | if (req->result >= 0) |
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160 | { |
371 | { |
161 | char *buf = req->data2ptr; |
372 | SV *rv = &PL_sv_undef; |
162 | AV *av = newAV (); |
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163 | |
373 | |
164 | while (req->result) |
374 | if (req->result >= 0) |
165 | { |
375 | { |
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376 | int i; |
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377 | char *buf = req->data2ptr; |
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378 | AV *av = newAV (); |
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379 | |
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380 | av_extend (av, req->result - 1); |
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381 | |
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382 | for (i = 0; i < req->result; ++i) |
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383 | { |
166 | SV *sv = newSVpv (buf, 0); |
384 | SV *sv = newSVpv (buf, 0); |
167 | |
385 | |
168 | av_push (av, sv); |
386 | av_store (av, i, sv); |
169 | buf += SvCUR (sv) + 1; |
387 | buf += SvCUR (sv) + 1; |
170 | req->result--; |
388 | } |
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389 | |
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390 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
171 | } |
391 | } |
172 | |
392 | |
173 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
393 | PUSHs (rv); |
174 | } |
394 | } |
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395 | break; |
175 | |
396 | |
176 | XPUSHs (rv); |
397 | case REQ_OPEN: |
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398 | { |
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399 | /* convert fd to fh */ |
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400 | SV *fh; |
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401 | |
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402 | PUSHs (sv_2mortal (newSViv (req->result))); |
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403 | PUTBACK; |
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404 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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405 | SPAGAIN; |
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406 | |
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407 | fh = SvREFCNT_inc (POPs); |
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408 | |
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409 | PUSHMARK (SP); |
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410 | XPUSHs (sv_2mortal (fh)); |
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411 | } |
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412 | break; |
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413 | |
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414 | case REQ_GROUP: |
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415 | req->fd = 2; /* mark group as finished */ |
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416 | |
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417 | if (req->data) |
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418 | { |
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419 | int i; |
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420 | AV *av = (AV *)req->data; |
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421 | |
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422 | EXTEND (SP, AvFILL (av) + 1); |
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423 | for (i = 0; i <= AvFILL (av); ++i) |
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424 | PUSHs (*av_fetch (av, i, 0)); |
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425 | } |
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426 | break; |
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427 | |
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428 | case REQ_NOP: |
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429 | case REQ_BUSY: |
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430 | break; |
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431 | |
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432 | default: |
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433 | PUSHs (sv_2mortal (newSViv (req->result))); |
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434 | break; |
177 | } |
435 | } |
178 | break; |
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179 | |
436 | |
180 | case REQ_OPEN: |
437 | errno = req->errorno; |
181 | { |
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182 | /* convert fd to fh */ |
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183 | SV *fh; |
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184 | |
438 | |
185 | XPUSHs (sv_2mortal (newSViv (req->result))); |
|
|
186 | PUTBACK; |
439 | PUTBACK; |
187 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
|
|
188 | SPAGAIN; |
|
|
189 | |
|
|
190 | fh = SvREFCNT_inc (POPs); |
|
|
191 | |
|
|
192 | PUSHMARK (SP); |
|
|
193 | XPUSHs (sv_2mortal (fh)); |
|
|
194 | } |
|
|
195 | break; |
|
|
196 | |
|
|
197 | case REQ_SLEEP: |
|
|
198 | case REQ_GROUP: |
|
|
199 | break; |
|
|
200 | |
|
|
201 | default: |
|
|
202 | XPUSHs (sv_2mortal (newSViv (req->result))); |
|
|
203 | break; |
|
|
204 | } |
|
|
205 | |
|
|
206 | |
|
|
207 | PUTBACK; |
|
|
208 | call_sv (req->callback, G_VOID | G_EVAL); |
440 | call_sv (req->callback, G_VOID | G_EVAL); |
209 | SPAGAIN; |
441 | SPAGAIN; |
|
|
442 | |
|
|
443 | FREETMPS; |
|
|
444 | LEAVE; |
|
|
445 | } |
|
|
446 | |
|
|
447 | if (req->grp) |
|
|
448 | { |
|
|
449 | aio_req grp = req->grp; |
|
|
450 | |
|
|
451 | /* unlink request */ |
|
|
452 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
|
|
453 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
|
|
454 | |
|
|
455 | if (grp->grp_first == req) |
|
|
456 | grp->grp_first = req->grp_next; |
|
|
457 | |
|
|
458 | aio_grp_dec (grp); |
|
|
459 | } |
210 | |
460 | |
211 | if (SvTRUE (ERRSV)) |
461 | if (SvTRUE (ERRSV)) |
212 | { |
462 | { |
213 | req_free (req); |
463 | req_free (req); |
214 | croak (0); |
464 | croak (0); |
215 | } |
465 | } |
216 | |
|
|
217 | LEAVE; |
|
|
218 | |
|
|
219 | errno = errorno; |
|
|
220 | } |
466 | } |
221 | |
467 | |
222 | static void req_free (aio_req req) |
468 | static void req_free (aio_req req) |
223 | { |
469 | { |
224 | if (req->grp) |
|
|
225 | { |
|
|
226 | aio_req grp = req->grp; |
|
|
227 | |
|
|
228 | /* unlink request */ |
|
|
229 | req->grp_next->grp_prev = req->grp_prev; |
|
|
230 | req->grp_prev->grp_next = req->grp_next; |
|
|
231 | |
|
|
232 | if (grp->grp_next == grp) |
|
|
233 | { |
|
|
234 | req_invoke (grp); |
|
|
235 | req_free (grp); |
|
|
236 | } |
|
|
237 | } |
|
|
238 | |
|
|
239 | if (req->self) |
470 | if (req->self) |
240 | { |
471 | { |
241 | sv_unmagic (req->self, PERL_MAGIC_ext); |
472 | sv_unmagic (req->self, PERL_MAGIC_ext); |
242 | SvREFCNT_dec (req->self); |
473 | SvREFCNT_dec (req->self); |
243 | } |
474 | } |
244 | |
475 | |
245 | if (req->data) |
|
|
246 | SvREFCNT_dec (req->data); |
476 | SvREFCNT_dec (req->data); |
247 | |
|
|
248 | if (req->fh) |
|
|
249 | SvREFCNT_dec (req->fh); |
477 | SvREFCNT_dec (req->fh); |
250 | |
|
|
251 | if (req->fh2) |
|
|
252 | SvREFCNT_dec (req->fh2); |
478 | SvREFCNT_dec (req->fh2); |
253 | |
|
|
254 | if (req->statdata) |
|
|
255 | Safefree (req->statdata); |
|
|
256 | |
|
|
257 | if (req->callback) |
|
|
258 | SvREFCNT_dec (req->callback); |
479 | SvREFCNT_dec (req->callback); |
|
|
480 | Safefree (req->statdata); |
259 | |
481 | |
260 | if (req->type == REQ_READDIR && req->result >= 0) |
482 | if (req->type == REQ_READDIR) |
261 | free (req->data2ptr); |
483 | free (req->data2ptr); |
262 | |
484 | |
263 | Safefree (req); |
485 | Safefree (req); |
264 | } |
486 | } |
265 | |
487 | |
|
|
488 | static void req_cancel_subs (aio_req grp) |
|
|
489 | { |
|
|
490 | aio_req sub; |
|
|
491 | |
|
|
492 | if (grp->type != REQ_GROUP) |
|
|
493 | return; |
|
|
494 | |
|
|
495 | SvREFCNT_dec (grp->fh2); |
|
|
496 | grp->fh2 = 0; |
|
|
497 | |
|
|
498 | for (sub = grp->grp_first; sub; sub = sub->grp_next) |
|
|
499 | req_cancel (sub); |
|
|
500 | } |
|
|
501 | |
266 | static void req_cancel (aio_req req) |
502 | static void req_cancel (aio_req req) |
267 | { |
503 | { |
268 | req->cancelled = 1; |
504 | req->flags |= FLAG_CANCELLED; |
269 | |
505 | |
270 | if (req->type == REQ_GROUP) |
506 | req_cancel_subs (req); |
271 | { |
|
|
272 | aio_req sub; |
|
|
273 | |
|
|
274 | for (sub = req->grp_next; sub != req; sub = sub->grp_next) |
|
|
275 | req_cancel (sub); |
|
|
276 | } |
|
|
277 | } |
507 | } |
278 | |
508 | |
279 | static int poll_cb () |
509 | static int poll_cb (int max) |
280 | { |
510 | { |
281 | dSP; |
511 | dSP; |
282 | int count = 0; |
512 | int count = 0; |
283 | int do_croak = 0; |
513 | int do_croak = 0; |
284 | aio_req req; |
514 | aio_req req; |
285 | |
515 | |
286 | for (;;) |
516 | for (;;) |
287 | { |
517 | { |
288 | pthread_mutex_lock (&reslock); |
518 | while (max <= 0 || count < max) |
289 | req = ress; |
|
|
290 | |
|
|
291 | if (req) |
|
|
292 | { |
519 | { |
293 | ress = req->next; |
520 | LOCK (reslock); |
|
|
521 | req = reqq_shift (&res_queue); |
294 | |
522 | |
295 | if (!ress) |
523 | if (req) |
296 | { |
524 | { |
|
|
525 | --npending; |
|
|
526 | |
|
|
527 | if (!res_queue.size) |
|
|
528 | { |
297 | /* read any signals sent by the worker threads */ |
529 | /* read any signals sent by the worker threads */ |
298 | char buf [32]; |
530 | char buf [32]; |
299 | while (read (respipe [0], buf, 32) == 32) |
531 | while (read (respipe [0], buf, 32) == 32) |
|
|
532 | ; |
300 | ; |
533 | } |
301 | |
|
|
302 | rese = 0; |
|
|
303 | } |
534 | } |
|
|
535 | |
|
|
536 | UNLOCK (reslock); |
|
|
537 | |
|
|
538 | if (!req) |
|
|
539 | break; |
|
|
540 | |
|
|
541 | --nreqs; |
|
|
542 | |
|
|
543 | if (req->type == REQ_QUIT) |
|
|
544 | --started; |
|
|
545 | else if (req->type == REQ_GROUP && req->length) |
|
|
546 | { |
|
|
547 | req->fd = 1; /* mark request as delayed */ |
|
|
548 | continue; |
|
|
549 | } |
|
|
550 | else |
|
|
551 | { |
|
|
552 | if (req->type == REQ_READ) |
|
|
553 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
|
|
554 | |
|
|
555 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
|
|
556 | SvREADONLY_off (req->data); |
|
|
557 | |
|
|
558 | if (req->statdata) |
|
|
559 | { |
|
|
560 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
|
|
561 | PL_laststatval = req->result; |
|
|
562 | PL_statcache = *(req->statdata); |
|
|
563 | } |
|
|
564 | |
|
|
565 | req_invoke (req); |
|
|
566 | |
|
|
567 | count++; |
|
|
568 | } |
|
|
569 | |
|
|
570 | req_free (req); |
304 | } |
571 | } |
305 | |
572 | |
306 | pthread_mutex_unlock (&reslock); |
573 | if (nreqs <= max_outstanding) |
307 | |
|
|
308 | if (!req) |
|
|
309 | break; |
574 | break; |
310 | |
575 | |
311 | nreqs--; |
576 | poll_wait (); |
312 | |
577 | |
313 | if (req->type == REQ_QUIT) |
578 | max = 0; |
314 | started--; |
|
|
315 | else if (req->type == REQ_GROUP && req->grp_next != req) |
|
|
316 | continue; |
|
|
317 | else |
|
|
318 | { |
|
|
319 | if (req->type == REQ_READ) |
|
|
320 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
|
|
321 | |
|
|
322 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
|
|
323 | SvREADONLY_off (req->data); |
|
|
324 | |
|
|
325 | if (req->statdata) |
|
|
326 | { |
|
|
327 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
|
|
328 | PL_laststatval = req->result; |
|
|
329 | PL_statcache = *(req->statdata); |
|
|
330 | } |
|
|
331 | |
|
|
332 | req_invoke (req); |
|
|
333 | |
|
|
334 | count++; |
|
|
335 | } |
|
|
336 | |
|
|
337 | req_free (req); |
|
|
338 | } |
579 | } |
339 | |
580 | |
340 | return count; |
581 | return count; |
341 | } |
582 | } |
342 | |
583 | |
343 | static void *aio_proc(void *arg); |
584 | static void *aio_proc(void *arg); |
344 | |
585 | |
345 | static void start_thread (void) |
586 | static void start_thread (void) |
346 | { |
587 | { |
347 | sigset_t fullsigset, oldsigset; |
588 | sigset_t fullsigset, oldsigset; |
348 | pthread_t tid; |
|
|
349 | pthread_attr_t attr; |
589 | pthread_attr_t attr; |
|
|
590 | |
|
|
591 | worker *wrk = calloc (1, sizeof (worker)); |
|
|
592 | |
|
|
593 | if (!wrk) |
|
|
594 | croak ("unable to allocate worker thread data"); |
350 | |
595 | |
351 | pthread_attr_init (&attr); |
596 | pthread_attr_init (&attr); |
352 | pthread_attr_setstacksize (&attr, STACKSIZE); |
597 | pthread_attr_setstacksize (&attr, STACKSIZE); |
353 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
598 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
354 | |
599 | |
355 | sigfillset (&fullsigset); |
600 | sigfillset (&fullsigset); |
|
|
601 | |
|
|
602 | LOCK (wrklock); |
356 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
603 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
357 | |
604 | |
358 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
605 | if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0) |
|
|
606 | { |
|
|
607 | wrk->prev = &wrk_first; |
|
|
608 | wrk->next = wrk_first.next; |
|
|
609 | wrk_first.next->prev = wrk; |
|
|
610 | wrk_first.next = wrk; |
359 | started++; |
611 | ++started; |
|
|
612 | } |
|
|
613 | else |
|
|
614 | free (wrk); |
360 | |
615 | |
361 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
616 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
|
|
617 | UNLOCK (wrklock); |
362 | } |
618 | } |
363 | |
619 | |
364 | static void req_send (aio_req req) |
620 | static void req_send (aio_req req) |
365 | { |
621 | { |
366 | while (started < wanted && nreqs >= started) |
622 | while (started < wanted && nreqs >= started) |
367 | start_thread (); |
623 | start_thread (); |
368 | |
624 | |
369 | nreqs++; |
625 | ++nreqs; |
370 | |
626 | |
371 | pthread_mutex_lock (&reqlock); |
627 | LOCK (reqlock); |
372 | |
628 | ++nready; |
373 | req->next = 0; |
629 | reqq_push (&req_queue, req); |
374 | |
|
|
375 | if (reqe) |
|
|
376 | { |
|
|
377 | reqe->next = req; |
|
|
378 | reqe = req; |
|
|
379 | } |
|
|
380 | else |
|
|
381 | reqe = reqs = req; |
|
|
382 | |
|
|
383 | pthread_cond_signal (&reqwait); |
630 | pthread_cond_signal (&reqwait); |
384 | pthread_mutex_unlock (&reqlock); |
631 | UNLOCK (reqlock); |
385 | |
|
|
386 | if (nreqs > max_outstanding) |
|
|
387 | for (;;) |
|
|
388 | { |
|
|
389 | poll_cb (); |
|
|
390 | |
|
|
391 | if (nreqs <= max_outstanding) |
|
|
392 | break; |
|
|
393 | |
|
|
394 | poll_wait (); |
|
|
395 | } |
|
|
396 | } |
632 | } |
397 | |
633 | |
398 | static void end_thread (void) |
634 | static void end_thread (void) |
399 | { |
635 | { |
400 | aio_req req; |
636 | aio_req req; |
|
|
637 | |
401 | Newz (0, req, 1, aio_cb); |
638 | Newz (0, req, 1, aio_cb); |
|
|
639 | |
402 | req->type = REQ_QUIT; |
640 | req->type = REQ_QUIT; |
|
|
641 | req->pri = PRI_MAX + PRI_BIAS; |
403 | |
642 | |
404 | req_send (req); |
643 | req_send (req); |
405 | } |
644 | } |
406 | |
645 | |
407 | static void min_parallel (int nthreads) |
646 | static void min_parallel (int nthreads) |
… | |
… | |
424 | } |
663 | } |
425 | |
664 | |
426 | while (started > wanted) |
665 | while (started > wanted) |
427 | { |
666 | { |
428 | poll_wait (); |
667 | poll_wait (); |
429 | poll_cb (); |
668 | poll_cb (0); |
430 | } |
669 | } |
431 | } |
670 | } |
432 | |
671 | |
433 | static void create_pipe () |
672 | static void create_pipe () |
434 | { |
673 | { |
… | |
… | |
459 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
698 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
460 | { |
699 | { |
461 | ssize_t res; |
700 | ssize_t res; |
462 | off_t ooffset; |
701 | off_t ooffset; |
463 | |
702 | |
464 | pthread_mutex_lock (&preadwritelock); |
703 | LOCK (preadwritelock); |
465 | ooffset = lseek (fd, 0, SEEK_CUR); |
704 | ooffset = lseek (fd, 0, SEEK_CUR); |
466 | lseek (fd, offset, SEEK_SET); |
705 | lseek (fd, offset, SEEK_SET); |
467 | res = read (fd, buf, count); |
706 | res = read (fd, buf, count); |
468 | lseek (fd, ooffset, SEEK_SET); |
707 | lseek (fd, ooffset, SEEK_SET); |
469 | pthread_mutex_unlock (&preadwritelock); |
708 | UNLOCK (preadwritelock); |
470 | |
709 | |
471 | return res; |
710 | return res; |
472 | } |
711 | } |
473 | |
712 | |
474 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
713 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
475 | { |
714 | { |
476 | ssize_t res; |
715 | ssize_t res; |
477 | off_t ooffset; |
716 | off_t ooffset; |
478 | |
717 | |
479 | pthread_mutex_lock (&preadwritelock); |
718 | LOCK (preadwritelock); |
480 | ooffset = lseek (fd, 0, SEEK_CUR); |
719 | ooffset = lseek (fd, 0, SEEK_CUR); |
481 | lseek (fd, offset, SEEK_SET); |
720 | lseek (fd, offset, SEEK_SET); |
482 | res = write (fd, buf, count); |
721 | res = write (fd, buf, count); |
483 | lseek (fd, offset, SEEK_SET); |
722 | lseek (fd, offset, SEEK_SET); |
484 | pthread_mutex_unlock (&preadwritelock); |
723 | UNLOCK (preadwritelock); |
485 | |
724 | |
486 | return res; |
725 | return res; |
487 | } |
726 | } |
488 | #endif |
727 | #endif |
489 | |
728 | |
490 | #if !HAVE_FDATASYNC |
729 | #if !HAVE_FDATASYNC |
491 | # define fdatasync fsync |
730 | # define fdatasync fsync |
492 | #endif |
731 | #endif |
493 | |
732 | |
494 | #if !HAVE_READAHEAD |
733 | #if !HAVE_READAHEAD |
495 | # define readahead aio_readahead |
734 | # define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) |
496 | |
735 | |
497 | static ssize_t readahead (int fd, off_t offset, size_t count) |
736 | static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) |
498 | { |
737 | { |
499 | char readahead_buf[4096]; |
738 | dBUF; |
500 | |
739 | |
501 | while (count > 0) |
740 | while (count > 0) |
502 | { |
741 | { |
503 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
742 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
504 | |
743 | |
505 | pread (fd, readahead_buf, len, offset); |
744 | pread (fd, aio_buf, len, offset); |
506 | offset += len; |
745 | offset += len; |
507 | count -= len; |
746 | count -= len; |
508 | } |
747 | } |
509 | |
748 | |
510 | errno = 0; |
749 | errno = 0; |
511 | } |
750 | } |
|
|
751 | |
512 | #endif |
752 | #endif |
513 | |
753 | |
514 | #if !HAVE_READDIR_R |
754 | #if !HAVE_READDIR_R |
515 | # define readdir_r aio_readdir_r |
755 | # define readdir_r aio_readdir_r |
516 | |
756 | |
… | |
… | |
519 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
759 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
520 | { |
760 | { |
521 | struct dirent *e; |
761 | struct dirent *e; |
522 | int errorno; |
762 | int errorno; |
523 | |
763 | |
524 | pthread_mutex_lock (&readdirlock); |
764 | LOCK (readdirlock); |
525 | |
765 | |
526 | e = readdir (dirp); |
766 | e = readdir (dirp); |
527 | errorno = errno; |
767 | errorno = errno; |
528 | |
768 | |
529 | if (e) |
769 | if (e) |
… | |
… | |
532 | strcpy (ent->d_name, e->d_name); |
772 | strcpy (ent->d_name, e->d_name); |
533 | } |
773 | } |
534 | else |
774 | else |
535 | *res = 0; |
775 | *res = 0; |
536 | |
776 | |
537 | pthread_mutex_unlock (&readdirlock); |
777 | UNLOCK (readdirlock); |
538 | |
778 | |
539 | errno = errorno; |
779 | errno = errorno; |
540 | return e ? 0 : -1; |
780 | return e ? 0 : -1; |
541 | } |
781 | } |
542 | #endif |
782 | #endif |
543 | |
783 | |
544 | /* sendfile always needs emulation */ |
784 | /* sendfile always needs emulation */ |
545 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
785 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) |
546 | { |
786 | { |
547 | ssize_t res; |
787 | ssize_t res; |
548 | |
788 | |
549 | if (!count) |
789 | if (!count) |
550 | return 0; |
790 | return 0; |
… | |
… | |
561 | { |
801 | { |
562 | off_t sbytes; |
802 | off_t sbytes; |
563 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
803 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
564 | |
804 | |
565 | if (res < 0 && sbytes) |
805 | if (res < 0 && sbytes) |
566 | /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ |
806 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
567 | res = sbytes; |
807 | res = sbytes; |
568 | } |
808 | } |
569 | |
809 | |
570 | # elif __hpux |
810 | # elif __hpux |
571 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
811 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
… | |
… | |
599 | #endif |
839 | #endif |
600 | ) |
840 | ) |
601 | ) |
841 | ) |
602 | { |
842 | { |
603 | /* emulate sendfile. this is a major pain in the ass */ |
843 | /* emulate sendfile. this is a major pain in the ass */ |
604 | char buf[4096]; |
844 | dBUF; |
|
|
845 | |
605 | res = 0; |
846 | res = 0; |
606 | |
847 | |
607 | while (count) |
848 | while (count) |
608 | { |
849 | { |
609 | ssize_t cnt; |
850 | ssize_t cnt; |
610 | |
851 | |
611 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
852 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
612 | |
853 | |
613 | if (cnt <= 0) |
854 | if (cnt <= 0) |
614 | { |
855 | { |
615 | if (cnt && !res) res = -1; |
856 | if (cnt && !res) res = -1; |
616 | break; |
857 | break; |
617 | } |
858 | } |
618 | |
859 | |
619 | cnt = write (ofd, buf, cnt); |
860 | cnt = write (ofd, aio_buf, cnt); |
620 | |
861 | |
621 | if (cnt <= 0) |
862 | if (cnt <= 0) |
622 | { |
863 | { |
623 | if (cnt && !res) res = -1; |
864 | if (cnt && !res) res = -1; |
624 | break; |
865 | break; |
… | |
… | |
632 | |
873 | |
633 | return res; |
874 | return res; |
634 | } |
875 | } |
635 | |
876 | |
636 | /* read a full directory */ |
877 | /* read a full directory */ |
637 | static int scandir_ (const char *path, void **namesp) |
878 | static void scandir_ (aio_req req, worker *self) |
638 | { |
879 | { |
639 | DIR *dirp = opendir (path); |
880 | DIR *dirp; |
640 | union |
881 | union |
641 | { |
882 | { |
642 | struct dirent d; |
883 | struct dirent d; |
643 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
884 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
644 | } u; |
885 | } *u; |
645 | struct dirent *entp; |
886 | struct dirent *entp; |
646 | char *name, *names; |
887 | char *name, *names; |
647 | int memlen = 4096; |
888 | int memlen = 4096; |
648 | int memofs = 0; |
889 | int memofs = 0; |
649 | int res = 0; |
890 | int res = 0; |
650 | int errorno; |
891 | int errorno; |
651 | |
892 | |
652 | if (!dirp) |
893 | LOCK (wrklock); |
653 | return -1; |
894 | self->dirp = dirp = opendir (req->dataptr); |
654 | |
895 | self->dbuf = u = malloc (sizeof (*u)); |
655 | names = malloc (memlen); |
896 | req->data2ptr = names = malloc (memlen); |
|
|
897 | UNLOCK (wrklock); |
656 | |
898 | |
|
|
899 | if (dirp && u && names) |
657 | for (;;) |
900 | for (;;) |
658 | { |
901 | { |
|
|
902 | errno = 0; |
659 | errno = 0, readdir_r (dirp, &u.d, &entp); |
903 | readdir_r (dirp, &u->d, &entp); |
660 | |
904 | |
661 | if (!entp) |
905 | if (!entp) |
662 | break; |
906 | break; |
663 | |
907 | |
664 | name = entp->d_name; |
908 | name = entp->d_name; |
665 | |
909 | |
666 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
910 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
667 | { |
911 | { |
668 | int len = strlen (name) + 1; |
912 | int len = strlen (name) + 1; |
669 | |
913 | |
670 | res++; |
914 | res++; |
671 | |
915 | |
672 | while (memofs + len > memlen) |
916 | while (memofs + len > memlen) |
673 | { |
917 | { |
674 | memlen *= 2; |
918 | memlen *= 2; |
|
|
919 | LOCK (wrklock); |
675 | names = realloc (names, memlen); |
920 | req->data2ptr = names = realloc (names, memlen); |
|
|
921 | UNLOCK (wrklock); |
|
|
922 | |
676 | if (!names) |
923 | if (!names) |
677 | break; |
924 | break; |
678 | } |
925 | } |
679 | |
926 | |
680 | memcpy (names + memofs, name, len); |
927 | memcpy (names + memofs, name, len); |
681 | memofs += len; |
928 | memofs += len; |
682 | } |
929 | } |
683 | } |
930 | } |
684 | |
931 | |
685 | errorno = errno; |
|
|
686 | closedir (dirp); |
|
|
687 | |
|
|
688 | if (errorno) |
932 | if (errno) |
689 | { |
|
|
690 | free (names); |
|
|
691 | errno = errorno; |
|
|
692 | res = -1; |
933 | res = -1; |
693 | } |
934 | |
694 | |
935 | req->result = res; |
695 | *namesp = (void *)names; |
|
|
696 | return res; |
|
|
697 | } |
936 | } |
698 | |
937 | |
699 | /*****************************************************************************/ |
938 | /*****************************************************************************/ |
700 | |
939 | |
701 | static void *aio_proc (void *thr_arg) |
940 | static void *aio_proc (void *thr_arg) |
702 | { |
941 | { |
703 | aio_req req; |
942 | aio_req req; |
704 | int type; |
943 | int type; |
|
|
944 | worker *self = (worker *)thr_arg; |
705 | |
945 | |
706 | do |
946 | do |
707 | { |
947 | { |
708 | pthread_mutex_lock (&reqlock); |
948 | LOCK (reqlock); |
709 | |
949 | |
710 | for (;;) |
950 | for (;;) |
711 | { |
951 | { |
712 | req = reqs; |
952 | self->req = req = reqq_shift (&req_queue); |
713 | |
|
|
714 | if (reqs) |
|
|
715 | { |
|
|
716 | reqs = reqs->next; |
|
|
717 | if (!reqs) reqe = 0; |
|
|
718 | } |
|
|
719 | |
953 | |
720 | if (req) |
954 | if (req) |
721 | break; |
955 | break; |
722 | |
956 | |
723 | pthread_cond_wait (&reqwait, &reqlock); |
957 | pthread_cond_wait (&reqwait, &reqlock); |
724 | } |
958 | } |
725 | |
959 | |
726 | pthread_mutex_unlock (&reqlock); |
960 | --nready; |
|
|
961 | |
|
|
962 | UNLOCK (reqlock); |
727 | |
963 | |
728 | errno = 0; /* strictly unnecessary */ |
964 | errno = 0; /* strictly unnecessary */ |
|
|
965 | type = req->type; /* remember type for QUIT check */ |
729 | |
966 | |
730 | if (!req->cancelled) |
967 | if (!(req->flags & FLAG_CANCELLED)) |
731 | switch (req->type) |
968 | switch (type) |
732 | { |
969 | { |
733 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
970 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
734 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
971 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
735 | |
972 | |
736 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
973 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
737 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; |
974 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break; |
738 | |
975 | |
739 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
976 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
740 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
977 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
741 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
978 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
742 | |
979 | |
… | |
… | |
748 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
985 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
749 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
986 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
750 | |
987 | |
751 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
988 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
752 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
989 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
753 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
990 | case REQ_READDIR: scandir_ (req, self); break; |
754 | |
991 | |
755 | case REQ_SLEEP: |
992 | case REQ_BUSY: |
756 | { |
993 | { |
757 | struct timeval tv; |
994 | struct timeval tv; |
758 | |
995 | |
759 | tv.tv_sec = req->fd; |
996 | tv.tv_sec = req->fd; |
760 | tv.tv_usec = req->fd2; |
997 | tv.tv_usec = req->fd2; |
761 | |
998 | |
762 | req->result = select (0, 0, 0, 0, &tv); |
999 | req->result = select (0, 0, 0, 0, &tv); |
763 | } |
1000 | } |
764 | |
1001 | |
|
|
1002 | case REQ_GROUP: |
|
|
1003 | case REQ_NOP: |
765 | case REQ_QUIT: |
1004 | case REQ_QUIT: |
766 | break; |
1005 | break; |
767 | |
1006 | |
768 | default: |
1007 | default: |
769 | req->result = ENOSYS; |
1008 | req->result = ENOSYS; |
770 | break; |
1009 | break; |
771 | } |
1010 | } |
772 | |
1011 | |
773 | req->errorno = errno; |
1012 | req->errorno = errno; |
774 | |
1013 | |
775 | pthread_mutex_lock (&reslock); |
1014 | LOCK (reslock); |
776 | |
1015 | |
777 | req->next = 0; |
1016 | ++npending; |
778 | |
1017 | |
779 | if (rese) |
1018 | if (!reqq_push (&res_queue, req)) |
780 | { |
|
|
781 | rese->next = req; |
|
|
782 | rese = req; |
|
|
783 | } |
|
|
784 | else |
|
|
785 | { |
|
|
786 | rese = ress = req; |
|
|
787 | |
|
|
788 | /* write a dummy byte to the pipe so fh becomes ready */ |
1019 | /* write a dummy byte to the pipe so fh becomes ready */ |
789 | write (respipe [1], &respipe, 1); |
1020 | write (respipe [1], &respipe, 1); |
790 | } |
|
|
791 | |
1021 | |
792 | pthread_mutex_unlock (&reslock); |
1022 | self->req = 0; |
|
|
1023 | worker_clear (self); |
|
|
1024 | |
|
|
1025 | UNLOCK (reslock); |
793 | } |
1026 | } |
794 | while (type != REQ_QUIT); |
1027 | while (type != REQ_QUIT); |
795 | |
1028 | |
|
|
1029 | LOCK (wrklock); |
|
|
1030 | worker_free (self); |
|
|
1031 | UNLOCK (wrklock); |
|
|
1032 | |
796 | return 0; |
1033 | return 0; |
797 | } |
1034 | } |
798 | |
1035 | |
799 | /*****************************************************************************/ |
1036 | /*****************************************************************************/ |
800 | |
1037 | |
801 | static void atfork_prepare (void) |
1038 | static void atfork_prepare (void) |
802 | { |
1039 | { |
803 | pthread_mutex_lock (&reqlock); |
1040 | LOCK (wrklock); |
804 | pthread_mutex_lock (&reslock); |
1041 | LOCK (reqlock); |
|
|
1042 | LOCK (reslock); |
805 | #if !HAVE_PREADWRITE |
1043 | #if !HAVE_PREADWRITE |
806 | pthread_mutex_lock (&preadwritelock); |
1044 | LOCK (preadwritelock); |
807 | #endif |
1045 | #endif |
808 | #if !HAVE_READDIR_R |
1046 | #if !HAVE_READDIR_R |
809 | pthread_mutex_lock (&readdirlock); |
1047 | LOCK (readdirlock); |
810 | #endif |
1048 | #endif |
811 | } |
1049 | } |
812 | |
1050 | |
813 | static void atfork_parent (void) |
1051 | static void atfork_parent (void) |
814 | { |
1052 | { |
815 | #if !HAVE_READDIR_R |
1053 | #if !HAVE_READDIR_R |
816 | pthread_mutex_unlock (&readdirlock); |
1054 | UNLOCK (readdirlock); |
817 | #endif |
1055 | #endif |
818 | #if !HAVE_PREADWRITE |
1056 | #if !HAVE_PREADWRITE |
819 | pthread_mutex_unlock (&preadwritelock); |
1057 | UNLOCK (preadwritelock); |
820 | #endif |
1058 | #endif |
821 | pthread_mutex_unlock (&reslock); |
1059 | UNLOCK (reslock); |
822 | pthread_mutex_unlock (&reqlock); |
1060 | UNLOCK (reqlock); |
|
|
1061 | UNLOCK (wrklock); |
823 | } |
1062 | } |
824 | |
1063 | |
825 | static void atfork_child (void) |
1064 | static void atfork_child (void) |
826 | { |
1065 | { |
827 | aio_req prv; |
1066 | aio_req prv; |
828 | |
1067 | |
|
|
1068 | while (prv = reqq_shift (&req_queue)) |
|
|
1069 | req_free (prv); |
|
|
1070 | |
|
|
1071 | while (prv = reqq_shift (&res_queue)) |
|
|
1072 | req_free (prv); |
|
|
1073 | |
|
|
1074 | while (wrk_first.next != &wrk_first) |
|
|
1075 | { |
|
|
1076 | worker *wrk = wrk_first.next; |
|
|
1077 | |
|
|
1078 | if (wrk->req) |
|
|
1079 | req_free (wrk->req); |
|
|
1080 | |
|
|
1081 | worker_clear (wrk); |
|
|
1082 | worker_free (wrk); |
|
|
1083 | } |
|
|
1084 | |
829 | started = 0; |
1085 | started = 0; |
830 | |
1086 | nreqs = 0; |
831 | while (reqs) |
|
|
832 | { |
|
|
833 | prv = reqs; |
|
|
834 | reqs = prv->next; |
|
|
835 | req_free (prv); |
|
|
836 | } |
|
|
837 | |
|
|
838 | reqs = reqe = 0; |
|
|
839 | |
|
|
840 | while (ress) |
|
|
841 | { |
|
|
842 | prv = ress; |
|
|
843 | ress = prv->next; |
|
|
844 | req_free (prv); |
|
|
845 | } |
|
|
846 | |
|
|
847 | ress = rese = 0; |
|
|
848 | |
1087 | |
849 | close (respipe [0]); |
1088 | close (respipe [0]); |
850 | close (respipe [1]); |
1089 | close (respipe [1]); |
851 | create_pipe (); |
1090 | create_pipe (); |
852 | |
1091 | |
853 | atfork_parent (); |
1092 | atfork_parent (); |
854 | } |
1093 | } |
855 | |
1094 | |
856 | #define dREQ \ |
1095 | #define dREQ \ |
857 | aio_req req; \ |
1096 | aio_req req; \ |
|
|
1097 | int req_pri = next_pri; \ |
|
|
1098 | next_pri = DEFAULT_PRI + PRI_BIAS; \ |
858 | \ |
1099 | \ |
859 | if (SvOK (callback) && !SvROK (callback)) \ |
1100 | if (SvOK (callback) && !SvROK (callback)) \ |
860 | croak ("callback must be undef or of reference type"); \ |
1101 | croak ("callback must be undef or of reference type"); \ |
861 | \ |
1102 | \ |
862 | Newz (0, req, 1, aio_cb); \ |
1103 | Newz (0, req, 1, aio_cb); \ |
863 | if (!req) \ |
1104 | if (!req) \ |
864 | croak ("out of memory during aio_req allocation"); \ |
1105 | croak ("out of memory during aio_req allocation"); \ |
865 | \ |
1106 | \ |
866 | req->callback = newSVsv (callback) |
1107 | req->callback = newSVsv (callback); \ |
|
|
1108 | req->pri = req_pri |
867 | |
1109 | |
868 | #define REQ_SEND \ |
1110 | #define REQ_SEND \ |
869 | req_send (req); \ |
1111 | req_send (req); \ |
870 | \ |
1112 | \ |
871 | if (GIMME_V != G_VOID) \ |
1113 | if (GIMME_V != G_VOID) \ |
… | |
… | |
885 | create_pipe (); |
1127 | create_pipe (); |
886 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
1128 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
887 | } |
1129 | } |
888 | |
1130 | |
889 | void |
1131 | void |
890 | min_parallel (nthreads) |
1132 | min_parallel (int nthreads) |
891 | int nthreads |
|
|
892 | PROTOTYPE: $ |
1133 | PROTOTYPE: $ |
893 | |
1134 | |
894 | void |
1135 | void |
895 | max_parallel (nthreads) |
1136 | max_parallel (int nthreads) |
896 | int nthreads |
|
|
897 | PROTOTYPE: $ |
1137 | PROTOTYPE: $ |
898 | |
1138 | |
899 | int |
1139 | int |
900 | max_outstanding (nreqs) |
1140 | max_outstanding (int maxreqs) |
901 | int nreqs |
1141 | PROTOTYPE: $ |
902 | PROTOTYPE: $ |
|
|
903 | CODE: |
1142 | CODE: |
904 | RETVAL = max_outstanding; |
1143 | RETVAL = max_outstanding; |
905 | max_outstanding = nreqs; |
1144 | max_outstanding = maxreqs; |
|
|
1145 | OUTPUT: |
|
|
1146 | RETVAL |
906 | |
1147 | |
907 | void |
1148 | void |
908 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
1149 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
909 | SV * pathname |
1150 | SV * pathname |
910 | int flags |
1151 | int flags |
… | |
… | |
1125 | |
1366 | |
1126 | REQ_SEND; |
1367 | REQ_SEND; |
1127 | } |
1368 | } |
1128 | |
1369 | |
1129 | void |
1370 | void |
1130 | aio_sleep (delay,callback=&PL_sv_undef) |
1371 | aio_busy (delay,callback=&PL_sv_undef) |
1131 | double delay |
1372 | double delay |
1132 | SV * callback |
1373 | SV * callback |
1133 | PPCODE: |
1374 | PPCODE: |
1134 | { |
1375 | { |
1135 | dREQ; |
1376 | dREQ; |
1136 | |
1377 | |
1137 | req->type = REQ_SLEEP; |
1378 | req->type = REQ_BUSY; |
1138 | req->fd = delay < 0. ? 0 : delay; |
1379 | req->fd = delay < 0. ? 0 : delay; |
1139 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1380 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1140 | |
1381 | |
1141 | REQ_SEND; |
1382 | REQ_SEND; |
1142 | } |
1383 | } |
1143 | |
1384 | |
1144 | void |
1385 | void |
1145 | aio_group (callback=&PL_sv_undef) |
1386 | aio_group (callback=&PL_sv_undef) |
1146 | SV * callback |
1387 | SV * callback |
1147 | PROTOTYPE: ;& |
1388 | PROTOTYPE: ;$ |
1148 | PPCODE: |
1389 | PPCODE: |
1149 | { |
1390 | { |
1150 | dREQ; |
1391 | dREQ; |
|
|
1392 | |
1151 | req->type = REQ_GROUP; |
1393 | req->type = REQ_GROUP; |
1152 | req->grp_next = req; |
|
|
1153 | req->grp_prev = req; |
|
|
1154 | |
|
|
1155 | req_send (req); |
1394 | req_send (req); |
|
|
1395 | |
1156 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1396 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1157 | } |
1397 | } |
|
|
1398 | |
|
|
1399 | void |
|
|
1400 | aio_nop (callback=&PL_sv_undef) |
|
|
1401 | SV * callback |
|
|
1402 | PPCODE: |
|
|
1403 | { |
|
|
1404 | dREQ; |
|
|
1405 | |
|
|
1406 | req->type = REQ_NOP; |
|
|
1407 | |
|
|
1408 | REQ_SEND; |
|
|
1409 | } |
|
|
1410 | |
|
|
1411 | int |
|
|
1412 | aioreq_pri (int pri = 0) |
|
|
1413 | PROTOTYPE: ;$ |
|
|
1414 | CODE: |
|
|
1415 | RETVAL = next_pri - PRI_BIAS; |
|
|
1416 | if (items > 0) |
|
|
1417 | { |
|
|
1418 | if (pri < PRI_MIN) pri = PRI_MIN; |
|
|
1419 | if (pri > PRI_MAX) pri = PRI_MAX; |
|
|
1420 | next_pri = pri + PRI_BIAS; |
|
|
1421 | } |
|
|
1422 | OUTPUT: |
|
|
1423 | RETVAL |
|
|
1424 | |
|
|
1425 | void |
|
|
1426 | aioreq_nice (int nice = 0) |
|
|
1427 | CODE: |
|
|
1428 | nice = next_pri - nice; |
|
|
1429 | if (nice < PRI_MIN) nice = PRI_MIN; |
|
|
1430 | if (nice > PRI_MAX) nice = PRI_MAX; |
|
|
1431 | next_pri = nice + PRI_BIAS; |
1158 | |
1432 | |
1159 | void |
1433 | void |
1160 | flush () |
1434 | flush () |
1161 | PROTOTYPE: |
1435 | PROTOTYPE: |
1162 | CODE: |
1436 | CODE: |
1163 | while (nreqs) |
1437 | while (nreqs) |
1164 | { |
1438 | { |
1165 | poll_wait (); |
1439 | poll_wait (); |
1166 | poll_cb (); |
1440 | poll_cb (0); |
1167 | } |
1441 | } |
1168 | |
1442 | |
1169 | void |
1443 | void |
1170 | poll() |
1444 | poll() |
1171 | PROTOTYPE: |
1445 | PROTOTYPE: |
1172 | CODE: |
1446 | CODE: |
1173 | if (nreqs) |
1447 | if (nreqs) |
1174 | { |
1448 | { |
1175 | poll_wait (); |
1449 | poll_wait (); |
1176 | poll_cb (); |
1450 | poll_cb (0); |
1177 | } |
1451 | } |
1178 | |
1452 | |
1179 | int |
1453 | int |
1180 | poll_fileno() |
1454 | poll_fileno() |
1181 | PROTOTYPE: |
1455 | PROTOTYPE: |
… | |
… | |
1186 | |
1460 | |
1187 | int |
1461 | int |
1188 | poll_cb(...) |
1462 | poll_cb(...) |
1189 | PROTOTYPE: |
1463 | PROTOTYPE: |
1190 | CODE: |
1464 | CODE: |
1191 | RETVAL = poll_cb (); |
1465 | RETVAL = poll_cb (0); |
|
|
1466 | OUTPUT: |
|
|
1467 | RETVAL |
|
|
1468 | |
|
|
1469 | int |
|
|
1470 | poll_some(int max = 0) |
|
|
1471 | PROTOTYPE: $ |
|
|
1472 | CODE: |
|
|
1473 | RETVAL = poll_cb (max); |
1192 | OUTPUT: |
1474 | OUTPUT: |
1193 | RETVAL |
1475 | RETVAL |
1194 | |
1476 | |
1195 | void |
1477 | void |
1196 | poll_wait() |
1478 | poll_wait() |
… | |
… | |
1205 | CODE: |
1487 | CODE: |
1206 | RETVAL = nreqs; |
1488 | RETVAL = nreqs; |
1207 | OUTPUT: |
1489 | OUTPUT: |
1208 | RETVAL |
1490 | RETVAL |
1209 | |
1491 | |
1210 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1492 | int |
1211 | |
1493 | nready() |
1212 | void |
|
|
1213 | cancel (aio_req_ornot req) |
|
|
1214 | PROTOTYPE: |
1494 | PROTOTYPE: |
1215 | CODE: |
1495 | CODE: |
|
|
1496 | if (WORDREAD_UNSAFE) LOCK (reqlock); |
|
|
1497 | RETVAL = nready; |
|
|
1498 | if (WORDREAD_UNSAFE) UNLOCK (reqlock); |
|
|
1499 | OUTPUT: |
|
|
1500 | RETVAL |
|
|
1501 | |
|
|
1502 | int |
|
|
1503 | npending() |
|
|
1504 | PROTOTYPE: |
|
|
1505 | CODE: |
|
|
1506 | if (WORDREAD_UNSAFE) LOCK (reslock); |
|
|
1507 | RETVAL = npending; |
|
|
1508 | if (WORDREAD_UNSAFE) UNLOCK (reslock); |
|
|
1509 | OUTPUT: |
|
|
1510 | RETVAL |
|
|
1511 | |
|
|
1512 | PROTOTYPES: DISABLE |
|
|
1513 | |
|
|
1514 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
|
|
1515 | |
|
|
1516 | void |
|
|
1517 | cancel (aio_req_ornot req) |
|
|
1518 | CODE: |
1216 | req_cancel (req); |
1519 | req_cancel (req); |
1217 | |
1520 | |
|
|
1521 | void |
|
|
1522 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
|
|
1523 | CODE: |
|
|
1524 | SvREFCNT_dec (req->callback); |
|
|
1525 | req->callback = newSVsv (callback); |
|
|
1526 | |
1218 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
1527 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
1219 | |
1528 | |
1220 | void |
1529 | void |
1221 | add (aio_req grp, ...) |
1530 | add (aio_req grp, ...) |
1222 | PROTOTYPE: $;@ |
|
|
1223 | PPCODE: |
1531 | PPCODE: |
1224 | { |
1532 | { |
1225 | int i; |
1533 | int i; |
|
|
1534 | aio_req req; |
|
|
1535 | |
|
|
1536 | if (grp->fd == 2) |
|
|
1537 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
1226 | |
1538 | |
1227 | for (i = 1; i < items; ++i ) |
1539 | for (i = 1; i < items; ++i ) |
1228 | { |
1540 | { |
1229 | aio_req req = SvAIO_REQ (ST (i)); |
|
|
1230 | |
|
|
1231 | req->grp_prev = grp; |
|
|
1232 | req->grp_next = grp->grp_next; |
|
|
1233 | grp->grp_next->grp_prev = req; |
|
|
1234 | grp->grp_next = req; |
|
|
1235 | |
|
|
1236 | req->grp = grp; |
|
|
1237 | |
|
|
1238 | if (GIMME_V != G_VOID) |
1541 | if (GIMME_V != G_VOID) |
1239 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
1542 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
|
|
1543 | |
|
|
1544 | req = SvAIO_REQ (ST (i)); |
|
|
1545 | |
|
|
1546 | if (req) |
|
|
1547 | { |
|
|
1548 | ++grp->length; |
|
|
1549 | req->grp = grp; |
|
|
1550 | |
|
|
1551 | req->grp_prev = 0; |
|
|
1552 | req->grp_next = grp->grp_first; |
|
|
1553 | |
|
|
1554 | if (grp->grp_first) |
|
|
1555 | grp->grp_first->grp_prev = req; |
|
|
1556 | |
|
|
1557 | grp->grp_first = req; |
|
|
1558 | } |
1240 | } |
1559 | } |
1241 | } |
1560 | } |
1242 | |
1561 | |
|
|
1562 | void |
|
|
1563 | cancel_subs (aio_req_ornot req) |
|
|
1564 | CODE: |
|
|
1565 | req_cancel_subs (req); |
|
|
1566 | |
|
|
1567 | void |
|
|
1568 | result (aio_req grp, ...) |
|
|
1569 | CODE: |
|
|
1570 | { |
|
|
1571 | int i; |
|
|
1572 | AV *av; |
|
|
1573 | |
|
|
1574 | grp->errorno = errno; |
|
|
1575 | |
|
|
1576 | av = newAV (); |
|
|
1577 | |
|
|
1578 | for (i = 1; i < items; ++i ) |
|
|
1579 | av_push (av, newSVsv (ST (i))); |
|
|
1580 | |
|
|
1581 | SvREFCNT_dec (grp->data); |
|
|
1582 | grp->data = (SV *)av; |
|
|
1583 | } |
|
|
1584 | |
|
|
1585 | void |
|
|
1586 | errno (aio_req grp, int errorno = errno) |
|
|
1587 | CODE: |
|
|
1588 | grp->errorno = errorno; |
|
|
1589 | |
|
|
1590 | void |
|
|
1591 | limit (aio_req grp, int limit) |
|
|
1592 | CODE: |
|
|
1593 | grp->fd2 = limit; |
|
|
1594 | aio_grp_feed (grp); |
|
|
1595 | |
|
|
1596 | void |
|
|
1597 | feed (aio_req grp, SV *callback=&PL_sv_undef) |
|
|
1598 | CODE: |
|
|
1599 | { |
|
|
1600 | SvREFCNT_dec (grp->fh2); |
|
|
1601 | grp->fh2 = newSVsv (callback); |
|
|
1602 | |
|
|
1603 | if (grp->fd2 <= 0) |
|
|
1604 | grp->fd2 = 2; |
|
|
1605 | |
|
|
1606 | aio_grp_feed (grp); |
|
|
1607 | } |
|
|
1608 | |