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1 | #if __linux |
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2 | # define _GNU_SOURCE |
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3 | #endif |
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4 | |
1 | #define _REENTRANT 1 |
5 | #define _REENTRANT 1 |
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6 | |
2 | #include <errno.h> |
7 | #include <errno.h> |
3 | |
8 | |
4 | #include "EXTERN.h" |
9 | #include "EXTERN.h" |
5 | #include "perl.h" |
10 | #include "perl.h" |
6 | #include "XSUB.h" |
11 | #include "XSUB.h" |
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9 | |
14 | |
10 | #include <pthread.h> |
15 | #include <pthread.h> |
11 | |
16 | |
12 | #include <stddef.h> |
17 | #include <stddef.h> |
13 | #include <errno.h> |
18 | #include <errno.h> |
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19 | #include <sys/time.h> |
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20 | #include <sys/select.h> |
14 | #include <sys/types.h> |
21 | #include <sys/types.h> |
15 | #include <sys/stat.h> |
22 | #include <sys/stat.h> |
16 | #include <limits.h> |
23 | #include <limits.h> |
17 | #include <unistd.h> |
24 | #include <unistd.h> |
18 | #include <fcntl.h> |
25 | #include <fcntl.h> |
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39 | # define NAME_MAX 4096 |
46 | # define NAME_MAX 4096 |
40 | #endif |
47 | #endif |
41 | |
48 | |
42 | #if __ia64 |
49 | #if __ia64 |
43 | # define STACKSIZE 65536 |
50 | # define STACKSIZE 65536 |
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51 | #elif __i386 || __x86_64 /* 16k is unreasonably high :( */ |
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52 | # define STACKSIZE PTHREAD_STACK_MIN |
44 | #else |
53 | #else |
45 | # define STACKSIZE 8192 |
54 | # define STACKSIZE 16384 |
46 | #endif |
55 | #endif |
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56 | |
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57 | /* buffer size for various temporary buffers */ |
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58 | #define AIO_BUFSIZE 65536 |
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59 | |
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60 | #define dBUF \ |
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61 | char *aio_buf = malloc (AIO_BUFSIZE); \ |
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62 | if (!aio_buf) \ |
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63 | return -1; |
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64 | |
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65 | #define fBUF free (aio_buf) |
47 | |
66 | |
48 | enum { |
67 | enum { |
49 | REQ_QUIT, |
68 | REQ_QUIT, |
50 | REQ_OPEN, REQ_CLOSE, |
69 | REQ_OPEN, REQ_CLOSE, |
51 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
70 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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53 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
72 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
54 | REQ_FSYNC, REQ_FDATASYNC, |
73 | REQ_FSYNC, REQ_FDATASYNC, |
55 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
74 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
56 | REQ_READDIR, |
75 | REQ_READDIR, |
57 | REQ_LINK, REQ_SYMLINK, |
76 | REQ_LINK, REQ_SYMLINK, |
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77 | REQ_GROUP, REQ_NOP, |
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78 | REQ_SLEEP, |
58 | }; |
79 | }; |
59 | |
80 | |
60 | #define AIO_CB_KLASS "IO::AIO::CB" |
81 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
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82 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
61 | |
83 | |
62 | typedef struct aio_cb |
84 | typedef struct aio_cb |
63 | { |
85 | { |
64 | struct aio_cb *grp_prev, *grp_next; |
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65 | struct aio_grp *grp; |
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66 | |
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67 | struct aio_cb *volatile next; |
86 | struct aio_cb *volatile next; |
68 | |
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69 | SV *self; /* the perl counterpart of this request, if any */ |
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70 | |
87 | |
71 | SV *data, *callback; |
88 | SV *data, *callback; |
72 | SV *fh, *fh2; |
89 | SV *fh, *fh2; |
73 | void *dataptr, *data2ptr; |
90 | void *dataptr, *data2ptr; |
74 | Stat_t *statdata; |
91 | Stat_t *statdata; |
75 | off_t offset; |
92 | off_t offset; |
76 | size_t length; |
93 | size_t length; |
77 | ssize_t result; |
94 | ssize_t result; |
78 | |
95 | |
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96 | STRLEN dataoffset; |
79 | int type; |
97 | int type; |
80 | int fd, fd2; |
98 | int fd, fd2; |
81 | int errorno; |
99 | int errorno; |
82 | STRLEN dataoffset; |
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83 | mode_t mode; /* open */ |
100 | mode_t mode; /* open */ |
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101 | |
84 | unsigned char cancelled; |
102 | unsigned char flags; |
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103 | unsigned char pri; |
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104 | |
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105 | SV *self; /* the perl counterpart of this request, if any */ |
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106 | struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; |
85 | } aio_cb; |
107 | } aio_cb; |
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108 | |
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109 | enum { |
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110 | FLAG_CANCELLED = 0x01, |
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111 | }; |
86 | |
112 | |
87 | typedef aio_cb *aio_req; |
113 | typedef aio_cb *aio_req; |
88 | typedef aio_cb *aio_req_ornot; |
114 | typedef aio_cb *aio_req_ornot; |
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115 | |
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116 | enum { |
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117 | PRI_MIN = -4, |
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118 | PRI_MAX = 4, |
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119 | |
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120 | DEFAULT_PRI = 0, |
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121 | PRI_BIAS = -PRI_MIN, |
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122 | }; |
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123 | |
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124 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
89 | |
125 | |
90 | static int started, wanted; |
126 | static int started, wanted; |
91 | static volatile int nreqs; |
127 | static volatile int nreqs; |
92 | static int max_outstanding = 1<<30; |
128 | static int max_outstanding = 1<<30; |
93 | static int respipe [2]; |
129 | static int respipe [2]; |
94 | |
130 | |
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131 | #if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
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132 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
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133 | #else |
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134 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
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135 | #endif |
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136 | |
95 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
137 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
96 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
138 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
97 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
139 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
98 | |
140 | |
99 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
141 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
100 | static volatile aio_req ress, rese; /* queue start, queue end */ |
142 | static volatile aio_req ress, rese; /* queue start, queue end */ |
101 | |
143 | |
102 | typedef struct aio_grp |
144 | static void req_invoke (aio_req req); |
103 | { |
145 | static void req_free (aio_req req); |
104 | struct aio_cb *first, *last; |
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105 | SV *callback; |
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106 | int busycount; |
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107 | } aio_grp; |
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108 | |
146 | |
109 | static void aio_grp_begin (aio_grp *grp) |
147 | /* must be called at most once */ |
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148 | static SV *req_sv (aio_req req, const char *klass) |
110 | { |
149 | { |
111 | ++grp->busycount; |
150 | if (!req->self) |
112 | } |
151 | { |
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152 | req->self = (SV *)newHV (); |
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153 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
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154 | } |
113 | |
155 | |
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156 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
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157 | } |
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158 | |
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159 | static aio_req SvAIO_REQ (SV *sv) |
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160 | { |
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161 | MAGIC *mg; |
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162 | |
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163 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
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164 | croak ("object of class " AIO_REQ_KLASS " expected"); |
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165 | |
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166 | mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
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167 | |
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168 | return mg ? (aio_req)mg->mg_ptr : 0; |
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169 | } |
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170 | |
114 | static void aio_grp_end (aio_grp *grp) |
171 | static void aio_grp_feed (aio_req grp) |
115 | { |
172 | { |
116 | --grp->busycount; |
173 | while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) |
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174 | { |
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175 | int old_len = grp->length; |
117 | |
176 | |
118 | if (grp->busycount) |
177 | if (grp->fh2 && SvOK (grp->fh2)) |
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178 | { |
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179 | dSP; |
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180 | |
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181 | ENTER; |
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182 | SAVETMPS; |
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183 | PUSHMARK (SP); |
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184 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
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185 | PUTBACK; |
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186 | call_sv (grp->fh2, G_VOID | G_EVAL); |
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187 | SPAGAIN; |
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188 | FREETMPS; |
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189 | LEAVE; |
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190 | } |
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191 | |
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192 | /* stop if no progress has been made */ |
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193 | if (old_len == grp->length) |
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194 | { |
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195 | SvREFCNT_dec (grp->fh2); |
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196 | grp->fh2 = 0; |
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197 | break; |
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198 | } |
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199 | } |
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200 | } |
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201 | |
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202 | static void aio_grp_dec (aio_req grp) |
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203 | { |
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204 | --grp->length; |
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205 | |
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206 | /* call feeder, if applicable */ |
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207 | aio_grp_feed (grp); |
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208 | |
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209 | /* finish, if done */ |
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210 | if (!grp->length && grp->fd) |
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211 | { |
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212 | req_invoke (grp); |
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213 | req_free (grp); |
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214 | } |
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215 | } |
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216 | |
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217 | static void poll_wait () |
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218 | { |
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219 | fd_set rfd; |
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220 | |
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221 | while (nreqs) |
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222 | { |
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223 | aio_req req; |
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224 | #if !(__i386 || __x86_64) /* safe without sempahore on this archs */ |
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225 | pthread_mutex_lock (&reslock); |
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226 | #endif |
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227 | req = ress; |
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228 | #if !(__i386 || __x86_64) /* safe without sempahore on this archs */ |
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229 | pthread_mutex_unlock (&reslock); |
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230 | #endif |
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231 | |
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232 | if (req) |
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233 | return; |
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234 | |
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235 | FD_ZERO(&rfd); |
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236 | FD_SET(respipe [0], &rfd); |
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237 | |
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238 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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239 | } |
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240 | } |
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241 | |
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242 | static void req_invoke (aio_req req) |
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243 | { |
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244 | dSP; |
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245 | int errorno = errno; |
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246 | |
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247 | if (req->flags & FLAG_CANCELLED || !SvOK (req->callback)) |
119 | return; |
248 | return; |
120 | |
249 | |
121 | SvREFCNT_dec (grp->callback); |
250 | errno = req->errorno; |
122 | grp->callback = 0; |
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123 | } |
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124 | |
251 | |
125 | static aio_grp *aio_grp_new () |
252 | ENTER; |
126 | { |
253 | SAVETMPS; |
127 | aio_grp *grp; |
254 | PUSHMARK (SP); |
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255 | EXTEND (SP, 1); |
128 | |
256 | |
129 | Newz (0, grp, 1, aio_grp); |
257 | switch (req->type) |
130 | aio_grp_begin (grp); |
258 | { |
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259 | case REQ_READDIR: |
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260 | { |
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261 | SV *rv = &PL_sv_undef; |
131 | |
262 | |
132 | return grp; |
263 | if (req->result >= 0) |
133 | } |
264 | { |
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265 | char *buf = req->data2ptr; |
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266 | AV *av = newAV (); |
134 | |
267 | |
135 | /* must be called at most once */ |
268 | while (req->result) |
136 | static SV *req_sv (aio_req req) |
269 | { |
137 | { |
270 | SV *sv = newSVpv (buf, 0); |
138 | req->self = (SV *)newHV (); |
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139 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
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140 | |
271 | |
141 | return sv_bless (newRV_noinc (req->self), gv_stashpv (AIO_CB_KLASS, 1)); |
272 | av_push (av, sv); |
142 | } |
273 | buf += SvCUR (sv) + 1; |
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274 | req->result--; |
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275 | } |
143 | |
276 | |
144 | static aio_req SvAIO_REQ (SV *sv) |
277 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
145 | { |
278 | } |
146 | if (!sv_derived_from (sv, AIO_CB_KLASS) || !SvROK (sv)) |
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147 | croak ("object of class " AIO_CB_KLASS " expected"); |
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148 | |
279 | |
149 | MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
280 | PUSHs (rv); |
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281 | } |
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282 | break; |
150 | |
283 | |
151 | return mg ? (aio_req)mg->mg_ptr : 0; |
284 | case REQ_OPEN: |
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285 | { |
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286 | /* convert fd to fh */ |
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287 | SV *fh; |
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288 | |
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289 | PUSHs (sv_2mortal (newSViv (req->result))); |
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290 | PUTBACK; |
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291 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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292 | SPAGAIN; |
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293 | |
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294 | fh = SvREFCNT_inc (POPs); |
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295 | |
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296 | PUSHMARK (SP); |
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297 | XPUSHs (sv_2mortal (fh)); |
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298 | } |
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299 | break; |
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300 | |
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301 | case REQ_GROUP: |
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302 | req->fd = 2; /* mark group as finished */ |
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303 | |
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304 | if (req->data) |
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305 | { |
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306 | int i; |
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307 | AV *av = (AV *)req->data; |
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308 | |
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309 | EXTEND (SP, AvFILL (av) + 1); |
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310 | for (i = 0; i <= AvFILL (av); ++i) |
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311 | PUSHs (*av_fetch (av, i, 0)); |
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312 | } |
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313 | break; |
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314 | |
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315 | case REQ_NOP: |
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316 | case REQ_SLEEP: |
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317 | break; |
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318 | |
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319 | default: |
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320 | PUSHs (sv_2mortal (newSViv (req->result))); |
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321 | break; |
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322 | } |
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323 | |
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324 | |
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325 | PUTBACK; |
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326 | call_sv (req->callback, G_VOID | G_EVAL); |
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327 | SPAGAIN; |
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328 | |
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329 | FREETMPS; |
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330 | LEAVE; |
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331 | |
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332 | errno = errorno; |
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333 | |
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334 | if (SvTRUE (ERRSV)) |
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335 | { |
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336 | req_free (req); |
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337 | croak (0); |
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338 | } |
152 | } |
339 | } |
153 | |
340 | |
154 | static void req_free (aio_req req) |
341 | static void req_free (aio_req req) |
155 | { |
342 | { |
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343 | if (req->grp) |
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344 | { |
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345 | aio_req grp = req->grp; |
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346 | |
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347 | /* unlink request */ |
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348 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
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349 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
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350 | |
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351 | if (grp->grp_first == req) |
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352 | grp->grp_first = req->grp_next; |
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353 | |
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354 | aio_grp_dec (grp); |
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355 | } |
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356 | |
156 | if (req->self) |
357 | if (req->self) |
157 | { |
358 | { |
158 | sv_unmagic (req->self, PERL_MAGIC_ext); |
359 | sv_unmagic (req->self, PERL_MAGIC_ext); |
159 | SvREFCNT_dec (req->self); |
360 | SvREFCNT_dec (req->self); |
160 | } |
361 | } |
161 | |
362 | |
162 | if (req->data) |
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163 | SvREFCNT_dec (req->data); |
363 | SvREFCNT_dec (req->data); |
164 | |
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165 | if (req->fh) |
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166 | SvREFCNT_dec (req->fh); |
364 | SvREFCNT_dec (req->fh); |
167 | |
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168 | if (req->fh2) |
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169 | SvREFCNT_dec (req->fh2); |
365 | SvREFCNT_dec (req->fh2); |
170 | |
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171 | if (req->statdata) |
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172 | Safefree (req->statdata); |
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173 | |
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174 | if (req->callback) |
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175 | SvREFCNT_dec (req->callback); |
366 | SvREFCNT_dec (req->callback); |
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367 | Safefree (req->statdata); |
176 | |
368 | |
177 | if (req->type == REQ_READDIR && req->result >= 0) |
369 | if (req->type == REQ_READDIR && req->result >= 0) |
178 | free (req->data2ptr); |
370 | free (req->data2ptr); |
179 | |
371 | |
180 | Safefree (req); |
372 | Safefree (req); |
181 | } |
373 | } |
182 | |
374 | |
183 | static void |
375 | static void req_cancel (aio_req req) |
184 | poll_wait () |
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185 | { |
376 | { |
186 | if (nreqs && !ress) |
377 | req->flags |= FLAG_CANCELLED; |
187 | { |
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188 | fd_set rfd; |
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189 | FD_ZERO(&rfd); |
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190 | FD_SET(respipe [0], &rfd); |
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191 | |
378 | |
192 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
379 | if (req->type == REQ_GROUP) |
193 | } |
380 | { |
194 | } |
381 | aio_req sub; |
195 | |
382 | |
196 | static int |
383 | for (sub = req->grp_first; sub; sub = sub->grp_next) |
197 | poll_cb () |
384 | req_cancel (sub); |
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385 | } |
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386 | } |
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387 | |
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388 | static int poll_cb () |
198 | { |
389 | { |
199 | dSP; |
390 | dSP; |
200 | int count = 0; |
391 | int count = 0; |
201 | int do_croak = 0; |
392 | int do_croak = 0; |
202 | aio_req req; |
393 | aio_req req; |
… | |
… | |
224 | pthread_mutex_unlock (&reslock); |
415 | pthread_mutex_unlock (&reslock); |
225 | |
416 | |
226 | if (!req) |
417 | if (!req) |
227 | break; |
418 | break; |
228 | |
419 | |
229 | nreqs--; |
420 | --nreqs; |
230 | |
421 | |
231 | if (req->type == REQ_QUIT) |
422 | if (req->type == REQ_QUIT) |
232 | started--; |
423 | started--; |
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424 | else if (req->type == REQ_GROUP && req->length) |
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425 | { |
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426 | req->fd = 1; /* mark request as delayed */ |
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427 | continue; |
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428 | } |
233 | else |
429 | else |
234 | { |
430 | { |
235 | int errorno = errno; |
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236 | errno = req->errorno; |
|
|
237 | |
|
|
238 | if (req->type == REQ_READ) |
431 | if (req->type == REQ_READ) |
239 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
432 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
240 | |
433 | |
241 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
434 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
242 | SvREADONLY_off (req->data); |
435 | SvREADONLY_off (req->data); |
… | |
… | |
246 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
439 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
247 | PL_laststatval = req->result; |
440 | PL_laststatval = req->result; |
248 | PL_statcache = *(req->statdata); |
441 | PL_statcache = *(req->statdata); |
249 | } |
442 | } |
250 | |
443 | |
251 | ENTER; |
444 | req_invoke (req); |
252 | PUSHMARK (SP); |
|
|
253 | |
445 | |
254 | if (req->type == REQ_READDIR) |
|
|
255 | { |
|
|
256 | SV *rv = &PL_sv_undef; |
|
|
257 | |
|
|
258 | if (req->result >= 0) |
|
|
259 | { |
|
|
260 | char *buf = req->data2ptr; |
|
|
261 | AV *av = newAV (); |
|
|
262 | |
|
|
263 | while (req->result) |
|
|
264 | { |
|
|
265 | SV *sv = newSVpv (buf, 0); |
|
|
266 | |
|
|
267 | av_push (av, sv); |
|
|
268 | buf += SvCUR (sv) + 1; |
|
|
269 | req->result--; |
|
|
270 | } |
|
|
271 | |
|
|
272 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
|
|
273 | } |
|
|
274 | |
|
|
275 | XPUSHs (rv); |
|
|
276 | } |
|
|
277 | else |
|
|
278 | { |
|
|
279 | XPUSHs (sv_2mortal (newSViv (req->result))); |
|
|
280 | |
|
|
281 | if (req->type == REQ_OPEN) |
|
|
282 | { |
|
|
283 | /* convert fd to fh */ |
|
|
284 | SV *fh; |
|
|
285 | |
|
|
286 | PUTBACK; |
|
|
287 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
|
|
288 | SPAGAIN; |
|
|
289 | |
|
|
290 | fh = SvREFCNT_inc (POPs); |
|
|
291 | |
|
|
292 | PUSHMARK (SP); |
|
|
293 | XPUSHs (sv_2mortal (fh)); |
|
|
294 | } |
|
|
295 | } |
|
|
296 | |
|
|
297 | if (SvOK (req->callback) && !req->cancelled) |
|
|
298 | { |
|
|
299 | PUTBACK; |
|
|
300 | call_sv (req->callback, G_VOID | G_EVAL); |
|
|
301 | SPAGAIN; |
|
|
302 | |
|
|
303 | if (SvTRUE (ERRSV)) |
|
|
304 | { |
|
|
305 | req_free (req); |
|
|
306 | croak (0); |
|
|
307 | } |
|
|
308 | } |
|
|
309 | |
|
|
310 | LEAVE; |
|
|
311 | |
|
|
312 | errno = errorno; |
|
|
313 | count++; |
446 | count++; |
314 | } |
447 | } |
315 | |
448 | |
316 | req_free (req); |
449 | req_free (req); |
317 | } |
450 | } |
… | |
… | |
319 | return count; |
452 | return count; |
320 | } |
453 | } |
321 | |
454 | |
322 | static void *aio_proc(void *arg); |
455 | static void *aio_proc(void *arg); |
323 | |
456 | |
324 | static void |
|
|
325 | start_thread (void) |
457 | static void start_thread (void) |
326 | { |
458 | { |
327 | sigset_t fullsigset, oldsigset; |
459 | sigset_t fullsigset, oldsigset; |
328 | pthread_t tid; |
460 | pthread_t tid; |
329 | pthread_attr_t attr; |
461 | pthread_attr_t attr; |
330 | |
462 | |
… | |
… | |
339 | started++; |
471 | started++; |
340 | |
472 | |
341 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
473 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
342 | } |
474 | } |
343 | |
475 | |
344 | static void |
|
|
345 | req_send (aio_req req) |
476 | static void req_send (aio_req req) |
346 | { |
477 | { |
347 | while (started < wanted && nreqs >= started) |
478 | while (started < wanted && nreqs >= started) |
348 | start_thread (); |
479 | start_thread (); |
349 | |
480 | |
350 | nreqs++; |
481 | ++nreqs; |
351 | |
482 | |
352 | pthread_mutex_lock (&reqlock); |
483 | pthread_mutex_lock (&reqlock); |
353 | |
484 | |
354 | req->next = 0; |
485 | req->next = 0; |
355 | |
486 | |
… | |
… | |
374 | |
505 | |
375 | poll_wait (); |
506 | poll_wait (); |
376 | } |
507 | } |
377 | } |
508 | } |
378 | |
509 | |
379 | static void |
510 | static void end_thread (void) |
380 | end_thread (void) |
|
|
381 | { |
511 | { |
382 | aio_req req; |
512 | aio_req req; |
383 | Newz (0, req, 1, aio_cb); |
513 | Newz (0, req, 1, aio_cb); |
384 | req->type = REQ_QUIT; |
514 | req->type = REQ_QUIT; |
385 | |
515 | |
… | |
… | |
436 | * normal read/write by using a mutex. slows down execution a lot, |
566 | * normal read/write by using a mutex. slows down execution a lot, |
437 | * but that's your problem, not mine. |
567 | * but that's your problem, not mine. |
438 | */ |
568 | */ |
439 | static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
569 | static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
440 | |
570 | |
441 | static ssize_t |
571 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
442 | pread (int fd, void *buf, size_t count, off_t offset) |
|
|
443 | { |
572 | { |
444 | ssize_t res; |
573 | ssize_t res; |
445 | off_t ooffset; |
574 | off_t ooffset; |
446 | |
575 | |
447 | pthread_mutex_lock (&preadwritelock); |
576 | pthread_mutex_lock (&preadwritelock); |
… | |
… | |
452 | pthread_mutex_unlock (&preadwritelock); |
581 | pthread_mutex_unlock (&preadwritelock); |
453 | |
582 | |
454 | return res; |
583 | return res; |
455 | } |
584 | } |
456 | |
585 | |
457 | static ssize_t |
|
|
458 | pwrite (int fd, void *buf, size_t count, off_t offset) |
586 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
459 | { |
587 | { |
460 | ssize_t res; |
588 | ssize_t res; |
461 | off_t ooffset; |
589 | off_t ooffset; |
462 | |
590 | |
463 | pthread_mutex_lock (&preadwritelock); |
591 | pthread_mutex_lock (&preadwritelock); |
… | |
… | |
476 | #endif |
604 | #endif |
477 | |
605 | |
478 | #if !HAVE_READAHEAD |
606 | #if !HAVE_READAHEAD |
479 | # define readahead aio_readahead |
607 | # define readahead aio_readahead |
480 | |
608 | |
481 | static ssize_t |
|
|
482 | readahead (int fd, off_t offset, size_t count) |
609 | static ssize_t readahead (int fd, off_t offset, size_t count) |
483 | { |
610 | { |
484 | char readahead_buf[4096]; |
611 | dBUF; |
485 | |
612 | |
486 | while (count > 0) |
613 | while (count > 0) |
487 | { |
614 | { |
488 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
615 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
489 | |
616 | |
490 | pread (fd, readahead_buf, len, offset); |
617 | pread (fd, aio_buf, len, offset); |
491 | offset += len; |
618 | offset += len; |
492 | count -= len; |
619 | count -= len; |
493 | } |
620 | } |
494 | |
621 | |
|
|
622 | fBUF; |
|
|
623 | |
495 | errno = 0; |
624 | errno = 0; |
496 | } |
625 | } |
497 | #endif |
626 | #endif |
498 | |
627 | |
499 | #if !HAVE_READDIR_R |
628 | #if !HAVE_READDIR_R |
500 | # define readdir_r aio_readdir_r |
629 | # define readdir_r aio_readdir_r |
501 | |
630 | |
502 | static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
631 | static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
503 | |
632 | |
504 | static int |
|
|
505 | readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
633 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
506 | { |
634 | { |
507 | struct dirent *e; |
635 | struct dirent *e; |
508 | int errorno; |
636 | int errorno; |
509 | |
637 | |
510 | pthread_mutex_lock (&readdirlock); |
638 | pthread_mutex_lock (&readdirlock); |
… | |
… | |
526 | return e ? 0 : -1; |
654 | return e ? 0 : -1; |
527 | } |
655 | } |
528 | #endif |
656 | #endif |
529 | |
657 | |
530 | /* sendfile always needs emulation */ |
658 | /* sendfile always needs emulation */ |
531 | static ssize_t |
|
|
532 | sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
659 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
533 | { |
660 | { |
534 | ssize_t res; |
661 | ssize_t res; |
535 | |
662 | |
536 | if (!count) |
663 | if (!count) |
537 | return 0; |
664 | return 0; |
… | |
… | |
586 | #endif |
713 | #endif |
587 | ) |
714 | ) |
588 | ) |
715 | ) |
589 | { |
716 | { |
590 | /* emulate sendfile. this is a major pain in the ass */ |
717 | /* emulate sendfile. this is a major pain in the ass */ |
591 | char buf[4096]; |
718 | dBUF; |
|
|
719 | |
592 | res = 0; |
720 | res = 0; |
593 | |
721 | |
594 | while (count) |
722 | while (count) |
595 | { |
723 | { |
596 | ssize_t cnt; |
724 | ssize_t cnt; |
597 | |
725 | |
598 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
726 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
599 | |
727 | |
600 | if (cnt <= 0) |
728 | if (cnt <= 0) |
601 | { |
729 | { |
602 | if (cnt && !res) res = -1; |
730 | if (cnt && !res) res = -1; |
603 | break; |
731 | break; |
604 | } |
732 | } |
605 | |
733 | |
606 | cnt = write (ofd, buf, cnt); |
734 | cnt = write (ofd, aio_buf, cnt); |
607 | |
735 | |
608 | if (cnt <= 0) |
736 | if (cnt <= 0) |
609 | { |
737 | { |
610 | if (cnt && !res) res = -1; |
738 | if (cnt && !res) res = -1; |
611 | break; |
739 | break; |
… | |
… | |
613 | |
741 | |
614 | offset += cnt; |
742 | offset += cnt; |
615 | res += cnt; |
743 | res += cnt; |
616 | count -= cnt; |
744 | count -= cnt; |
617 | } |
745 | } |
|
|
746 | |
|
|
747 | fBUF; |
618 | } |
748 | } |
619 | |
749 | |
620 | return res; |
750 | return res; |
621 | } |
751 | } |
622 | |
752 | |
623 | /* read a full directory */ |
753 | /* read a full directory */ |
624 | static int |
|
|
625 | scandir_ (const char *path, void **namesp) |
754 | static int scandir_ (const char *path, void **namesp) |
626 | { |
755 | { |
627 | DIR *dirp = opendir (path); |
756 | DIR *dirp; |
628 | union |
757 | union |
629 | { |
758 | { |
630 | struct dirent d; |
759 | struct dirent d; |
631 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
760 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
632 | } u; |
761 | } *u; |
633 | struct dirent *entp; |
762 | struct dirent *entp; |
634 | char *name, *names; |
763 | char *name, *names; |
635 | int memlen = 4096; |
764 | int memlen = 4096; |
636 | int memofs = 0; |
765 | int memofs = 0; |
637 | int res = 0; |
766 | int res = 0; |
638 | int errorno; |
767 | int errorno; |
639 | |
768 | |
|
|
769 | dirp = opendir (path); |
640 | if (!dirp) |
770 | if (!dirp) |
641 | return -1; |
771 | return -1; |
642 | |
772 | |
|
|
773 | u = malloc (sizeof (*u)); |
643 | names = malloc (memlen); |
774 | names = malloc (memlen); |
644 | |
775 | |
|
|
776 | if (u && names) |
645 | for (;;) |
777 | for (;;) |
646 | { |
778 | { |
|
|
779 | errno = 0; |
647 | errno = 0, readdir_r (dirp, &u.d, &entp); |
780 | readdir_r (dirp, &u->d, &entp); |
648 | |
781 | |
649 | if (!entp) |
782 | if (!entp) |
650 | break; |
783 | break; |
651 | |
784 | |
652 | name = entp->d_name; |
785 | name = entp->d_name; |
653 | |
786 | |
654 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
787 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
655 | { |
788 | { |
656 | int len = strlen (name) + 1; |
789 | int len = strlen (name) + 1; |
657 | |
790 | |
658 | res++; |
791 | res++; |
659 | |
792 | |
660 | while (memofs + len > memlen) |
793 | while (memofs + len > memlen) |
661 | { |
794 | { |
662 | memlen *= 2; |
795 | memlen *= 2; |
663 | names = realloc (names, memlen); |
796 | names = realloc (names, memlen); |
664 | if (!names) |
797 | if (!names) |
665 | break; |
798 | break; |
666 | } |
799 | } |
667 | |
800 | |
668 | memcpy (names + memofs, name, len); |
801 | memcpy (names + memofs, name, len); |
669 | memofs += len; |
802 | memofs += len; |
670 | } |
803 | } |
671 | } |
804 | } |
672 | |
805 | |
673 | errorno = errno; |
806 | errorno = errno; |
|
|
807 | free (u); |
674 | closedir (dirp); |
808 | closedir (dirp); |
675 | |
809 | |
676 | if (errorno) |
810 | if (errorno) |
677 | { |
811 | { |
678 | free (names); |
812 | free (names); |
… | |
… | |
684 | return res; |
818 | return res; |
685 | } |
819 | } |
686 | |
820 | |
687 | /*****************************************************************************/ |
821 | /*****************************************************************************/ |
688 | |
822 | |
689 | static void * |
|
|
690 | aio_proc (void *thr_arg) |
823 | static void *aio_proc (void *thr_arg) |
691 | { |
824 | { |
692 | aio_req req; |
825 | aio_req req; |
693 | int type; |
826 | int type; |
694 | |
827 | |
695 | do |
828 | do |
… | |
… | |
713 | } |
846 | } |
714 | |
847 | |
715 | pthread_mutex_unlock (&reqlock); |
848 | pthread_mutex_unlock (&reqlock); |
716 | |
849 | |
717 | errno = 0; /* strictly unnecessary */ |
850 | errno = 0; /* strictly unnecessary */ |
|
|
851 | type = req->type; /* remember type for QUIT check */ |
718 | |
852 | |
719 | if (!req->cancelled) |
853 | if (!(req->flags & FLAG_CANCELLED)) |
720 | switch (req->type) |
854 | switch (type) |
721 | { |
855 | { |
722 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
856 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
723 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
857 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
724 | |
858 | |
725 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
859 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
… | |
… | |
739 | |
873 | |
740 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
874 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
741 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
875 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
742 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
876 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
743 | |
877 | |
|
|
878 | case REQ_SLEEP: |
|
|
879 | { |
|
|
880 | struct timeval tv; |
|
|
881 | |
|
|
882 | tv.tv_sec = req->fd; |
|
|
883 | tv.tv_usec = req->fd2; |
|
|
884 | |
|
|
885 | req->result = select (0, 0, 0, 0, &tv); |
|
|
886 | } |
|
|
887 | |
|
|
888 | case REQ_GROUP: |
|
|
889 | case REQ_NOP: |
744 | case REQ_QUIT: |
890 | case REQ_QUIT: |
745 | break; |
891 | break; |
746 | |
892 | |
747 | default: |
893 | default: |
748 | req->result = ENOSYS; |
894 | req->result = ENOSYS; |
… | |
… | |
832 | atfork_parent (); |
978 | atfork_parent (); |
833 | } |
979 | } |
834 | |
980 | |
835 | #define dREQ \ |
981 | #define dREQ \ |
836 | aio_req req; \ |
982 | aio_req req; \ |
|
|
983 | int req_pri = next_pri; \ |
|
|
984 | next_pri = DEFAULT_PRI + PRI_BIAS; \ |
837 | \ |
985 | \ |
838 | if (SvOK (callback) && !SvROK (callback)) \ |
986 | if (SvOK (callback) && !SvROK (callback)) \ |
839 | croak ("callback must be undef or of reference type"); \ |
987 | croak ("callback must be undef or of reference type"); \ |
840 | \ |
988 | \ |
841 | Newz (0, req, 1, aio_cb); \ |
989 | Newz (0, req, 1, aio_cb); \ |
842 | if (!req) \ |
990 | if (!req) \ |
843 | croak ("out of memory during aio_req allocation"); \ |
991 | croak ("out of memory during aio_req allocation"); \ |
844 | \ |
992 | \ |
845 | req->callback = newSVsv (callback) |
993 | req->callback = newSVsv (callback); \ |
|
|
994 | req->pri = req_pri |
846 | |
995 | |
847 | #define REQ_SEND \ |
996 | #define REQ_SEND \ |
848 | req_send (req); \ |
997 | req_send (req); \ |
849 | \ |
998 | \ |
850 | if (GIMME_V != G_VOID) \ |
999 | if (GIMME_V != G_VOID) \ |
851 | XPUSHs (req_sv (req)); |
1000 | XPUSHs (req_sv (req, AIO_REQ_KLASS)); |
852 | |
1001 | |
853 | MODULE = IO::AIO PACKAGE = IO::AIO |
1002 | MODULE = IO::AIO PACKAGE = IO::AIO |
854 | |
1003 | |
855 | PROTOTYPES: ENABLE |
1004 | PROTOTYPES: ENABLE |
856 | |
1005 | |
… | |
… | |
1103 | req->dataptr = SvPVbyte_nolen (req->data); |
1252 | req->dataptr = SvPVbyte_nolen (req->data); |
1104 | |
1253 | |
1105 | REQ_SEND; |
1254 | REQ_SEND; |
1106 | } |
1255 | } |
1107 | |
1256 | |
|
|
1257 | void |
|
|
1258 | aio_sleep (delay,callback=&PL_sv_undef) |
|
|
1259 | double delay |
|
|
1260 | SV * callback |
|
|
1261 | PPCODE: |
|
|
1262 | { |
|
|
1263 | dREQ; |
|
|
1264 | |
|
|
1265 | req->type = REQ_SLEEP; |
|
|
1266 | req->fd = delay < 0. ? 0 : delay; |
|
|
1267 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
|
|
1268 | |
|
|
1269 | REQ_SEND; |
|
|
1270 | } |
|
|
1271 | |
|
|
1272 | void |
|
|
1273 | aio_group (callback=&PL_sv_undef) |
|
|
1274 | SV * callback |
|
|
1275 | PROTOTYPE: ;$ |
|
|
1276 | PPCODE: |
|
|
1277 | { |
|
|
1278 | dREQ; |
|
|
1279 | |
|
|
1280 | req->type = REQ_GROUP; |
|
|
1281 | req_send (req); |
|
|
1282 | |
|
|
1283 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
|
|
1284 | } |
|
|
1285 | |
|
|
1286 | void |
|
|
1287 | aio_nop (callback=&PL_sv_undef) |
|
|
1288 | SV * callback |
|
|
1289 | PPCODE: |
|
|
1290 | { |
|
|
1291 | dREQ; |
|
|
1292 | |
|
|
1293 | req->type = REQ_NOP; |
|
|
1294 | |
|
|
1295 | REQ_SEND; |
|
|
1296 | } |
|
|
1297 | |
1108 | #if 0 |
1298 | #if 0 |
1109 | |
1299 | |
1110 | # undocumented, because it does not cancel active requests |
|
|
1111 | void |
1300 | void |
1112 | cancel_most_requests () |
1301 | aio_pri (int pri = DEFAULT_PRI) |
1113 | PROTOTYPE: |
1302 | CODE: |
1114 | CODE: |
1303 | if (pri < PRI_MIN) pri = PRI_MIN; |
1115 | { |
1304 | if (pri > PRI_MAX) pri = PRI_MAX; |
1116 | aio_req *req; |
1305 | next_pri = pri + PRI_BIAS; |
1117 | |
|
|
1118 | pthread_mutex_lock (&reqlock); |
|
|
1119 | for (req = reqs; req; req = req->next) |
|
|
1120 | req->flags |= 1; |
|
|
1121 | pthread_mutex_unlock (&reqlock); |
|
|
1122 | |
|
|
1123 | pthread_mutex_lock (&reslock); |
|
|
1124 | for (req = ress; req; req = req->next) |
|
|
1125 | req->flags |= 1; |
|
|
1126 | pthread_mutex_unlock (&reslock); |
|
|
1127 | } |
|
|
1128 | |
1306 | |
1129 | #endif |
1307 | #endif |
1130 | |
1308 | |
1131 | void |
1309 | void |
1132 | flush () |
1310 | flush () |
… | |
… | |
1177 | CODE: |
1355 | CODE: |
1178 | RETVAL = nreqs; |
1356 | RETVAL = nreqs; |
1179 | OUTPUT: |
1357 | OUTPUT: |
1180 | RETVAL |
1358 | RETVAL |
1181 | |
1359 | |
|
|
1360 | PROTOTYPES: DISABLE |
|
|
1361 | |
1182 | MODULE = IO::AIO PACKAGE = IO::AIO::CB |
1362 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1183 | |
1363 | |
1184 | void |
1364 | void |
1185 | cancel (aio_req_ornot req) |
1365 | cancel (aio_req_ornot req) |
1186 | PROTOTYPE: |
1366 | PROTOTYPE: |
1187 | CODE: |
1367 | CODE: |
1188 | req->cancelled = 1; |
1368 | req_cancel (req); |
1189 | |
1369 | |
|
|
1370 | void |
|
|
1371 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
|
|
1372 | CODE: |
|
|
1373 | SvREFCNT_dec (req->callback); |
|
|
1374 | req->callback = newSVsv (callback); |
|
|
1375 | |
|
|
1376 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
|
|
1377 | |
|
|
1378 | void |
|
|
1379 | add (aio_req grp, ...) |
|
|
1380 | PPCODE: |
|
|
1381 | { |
|
|
1382 | int i; |
|
|
1383 | aio_req req; |
|
|
1384 | |
|
|
1385 | if (grp->fd == 2) |
|
|
1386 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
|
|
1387 | |
|
|
1388 | for (i = 1; i < items; ++i ) |
|
|
1389 | { |
|
|
1390 | if (GIMME_V != G_VOID) |
|
|
1391 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
|
|
1392 | |
|
|
1393 | req = SvAIO_REQ (ST (i)); |
|
|
1394 | |
|
|
1395 | if (req) |
|
|
1396 | { |
|
|
1397 | ++grp->length; |
|
|
1398 | req->grp = grp; |
|
|
1399 | |
|
|
1400 | req->grp_prev = 0; |
|
|
1401 | req->grp_next = grp->grp_first; |
|
|
1402 | |
|
|
1403 | if (grp->grp_first) |
|
|
1404 | grp->grp_first->grp_prev = req; |
|
|
1405 | |
|
|
1406 | grp->grp_first = req; |
|
|
1407 | } |
|
|
1408 | } |
|
|
1409 | } |
|
|
1410 | |
|
|
1411 | void |
|
|
1412 | result (aio_req grp, ...) |
|
|
1413 | CODE: |
|
|
1414 | { |
|
|
1415 | int i; |
|
|
1416 | AV *av = newAV (); |
|
|
1417 | |
|
|
1418 | for (i = 1; i < items; ++i ) |
|
|
1419 | av_push (av, newSVsv (ST (i))); |
|
|
1420 | |
|
|
1421 | SvREFCNT_dec (grp->data); |
|
|
1422 | grp->data = (SV *)av; |
|
|
1423 | } |
|
|
1424 | |
|
|
1425 | void |
|
|
1426 | feed_limit (aio_req grp, int limit) |
|
|
1427 | CODE: |
|
|
1428 | grp->fd2 = limit; |
|
|
1429 | aio_grp_feed (grp); |
|
|
1430 | |
|
|
1431 | void |
|
|
1432 | feed (aio_req grp, SV *callback=&PL_sv_undef) |
|
|
1433 | CODE: |
|
|
1434 | { |
|
|
1435 | SvREFCNT_dec (grp->fh2); |
|
|
1436 | grp->fh2 = newSVsv (callback); |
|
|
1437 | |
|
|
1438 | if (grp->fd2 <= 0) |
|
|
1439 | grp->fd2 = 2; |
|
|
1440 | |
|
|
1441 | aio_grp_feed (grp); |
|
|
1442 | } |
|
|
1443 | |