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1 | /* solaris */ |
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2 | #define _POSIX_PTHREAD_SEMANTICS 1 |
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3 | |
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4 | #if __linux && !defined(_GNU_SOURCE) |
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5 | # define _GNU_SOURCE |
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6 | #endif |
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7 | |
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8 | /* just in case */ |
1 | #define _REENTRANT 1 |
9 | #define _REENTRANT 1 |
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10 | |
2 | #include <errno.h> |
11 | #include <errno.h> |
3 | |
12 | |
4 | #include "EXTERN.h" |
13 | #include "EXTERN.h" |
5 | #include "perl.h" |
14 | #include "perl.h" |
6 | #include "XSUB.h" |
15 | #include "XSUB.h" |
… | |
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9 | |
18 | |
10 | #include <pthread.h> |
19 | #include <pthread.h> |
11 | |
20 | |
12 | #include <stddef.h> |
21 | #include <stddef.h> |
13 | #include <errno.h> |
22 | #include <errno.h> |
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23 | #include <sys/time.h> |
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24 | #include <sys/select.h> |
14 | #include <sys/types.h> |
25 | #include <sys/types.h> |
15 | #include <sys/stat.h> |
26 | #include <sys/stat.h> |
16 | #include <limits.h> |
27 | #include <limits.h> |
17 | #include <unistd.h> |
28 | #include <unistd.h> |
18 | #include <fcntl.h> |
29 | #include <fcntl.h> |
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37 | /* used for struct dirent, AIX doesn't provide it */ |
48 | /* used for struct dirent, AIX doesn't provide it */ |
38 | #ifndef NAME_MAX |
49 | #ifndef NAME_MAX |
39 | # define NAME_MAX 4096 |
50 | # define NAME_MAX 4096 |
40 | #endif |
51 | #endif |
41 | |
52 | |
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53 | #ifndef PTHREAD_STACK_MIN |
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54 | /* care for broken platforms, e.g. windows */ |
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55 | # define PTHREAD_STACK_MIN 16384 |
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56 | #endif |
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57 | |
42 | #if __ia64 |
58 | #if __ia64 |
43 | # define STACKSIZE 65536 |
59 | # define STACKSIZE 65536 |
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60 | #elif __i386 || __x86_64 /* 16k is unreasonably high :( */ |
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61 | # define STACKSIZE PTHREAD_STACK_MIN |
44 | #else |
62 | #else |
45 | # define STACKSIZE 8192 |
63 | # define STACKSIZE 16384 |
46 | #endif |
64 | #endif |
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65 | |
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66 | /* buffer size for various temporary buffers */ |
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67 | #define AIO_BUFSIZE 65536 |
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68 | |
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69 | #define dBUF \ |
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70 | char *aio_buf; \ |
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71 | LOCK (wrklock); \ |
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72 | self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ |
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73 | UNLOCK (wrklock); \ |
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74 | if (!aio_buf) \ |
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75 | return -1; |
47 | |
76 | |
48 | enum { |
77 | enum { |
49 | REQ_QUIT, |
78 | REQ_QUIT, |
50 | REQ_OPEN, REQ_CLOSE, |
79 | REQ_OPEN, REQ_CLOSE, |
51 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
80 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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53 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
82 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
54 | REQ_FSYNC, REQ_FDATASYNC, |
83 | REQ_FSYNC, REQ_FDATASYNC, |
55 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
84 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
56 | REQ_READDIR, |
85 | REQ_READDIR, |
57 | REQ_LINK, REQ_SYMLINK, |
86 | REQ_LINK, REQ_SYMLINK, |
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87 | REQ_GROUP, REQ_NOP, |
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88 | REQ_BUSY, |
58 | }; |
89 | }; |
59 | |
90 | |
60 | #define AIO_CB_KLASS "IO::AIO::CB" |
91 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
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92 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
61 | |
93 | |
62 | typedef struct aio_cb |
94 | typedef struct aio_cb |
63 | { |
95 | { |
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; |
96 | 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 | |
97 | |
71 | SV *data, *callback; |
98 | SV *data, *callback; |
72 | SV *fh, *fh2; |
99 | SV *fh, *fh2; |
73 | void *dataptr, *data2ptr; |
100 | void *dataptr, *data2ptr; |
74 | Stat_t *statdata; |
101 | Stat_t *statdata; |
75 | off_t offset; |
102 | off_t offset; |
76 | size_t length; |
103 | size_t length; |
77 | ssize_t result; |
104 | ssize_t result; |
78 | |
105 | |
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106 | STRLEN dataoffset; |
79 | int type; |
107 | int type; |
80 | int fd, fd2; |
108 | int fd, fd2; |
81 | int errorno; |
109 | int errorno; |
82 | STRLEN dataoffset; |
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83 | mode_t mode; /* open */ |
110 | mode_t mode; /* open */ |
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111 | |
84 | unsigned char cancelled; |
112 | unsigned char flags; |
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113 | unsigned char pri; |
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114 | |
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115 | SV *self; /* the perl counterpart of this request, if any */ |
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116 | struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; |
85 | } aio_cb; |
117 | } aio_cb; |
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118 | |
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119 | enum { |
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120 | FLAG_CANCELLED = 0x01, |
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121 | }; |
86 | |
122 | |
87 | typedef aio_cb *aio_req; |
123 | typedef aio_cb *aio_req; |
88 | typedef aio_cb *aio_req_ornot; |
124 | typedef aio_cb *aio_req_ornot; |
89 | |
125 | |
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126 | enum { |
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127 | PRI_MIN = -4, |
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128 | PRI_MAX = 4, |
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129 | |
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130 | DEFAULT_PRI = 0, |
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131 | PRI_BIAS = -PRI_MIN, |
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132 | NUM_PRI = PRI_MAX + PRI_BIAS + 1, |
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133 | }; |
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134 | |
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135 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
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136 | |
90 | static int started, wanted; |
137 | static unsigned int started, wanted; |
91 | static volatile int nreqs; |
138 | static volatile unsigned int nreqs; |
92 | static int max_outstanding = 1<<30; |
139 | static volatile unsigned int max_outstanding = 0xffffffff; |
93 | static int respipe [2]; |
140 | static int respipe [2]; |
94 | |
141 | |
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142 | #if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
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143 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
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144 | #else |
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145 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
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146 | #endif |
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147 | |
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148 | #define LOCK(mutex) pthread_mutex_lock (&(mutex)) |
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149 | #define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) |
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150 | |
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151 | /* worker threads management */ |
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152 | static pthread_mutex_t wrklock = AIO_MUTEX_INIT; |
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153 | |
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154 | typedef struct worker { |
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155 | /* locked by wrklock */ |
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156 | struct worker *prev, *next; |
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157 | |
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158 | pthread_t tid; |
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159 | |
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160 | /* locked by reslock, reqlock or wrklock */ |
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161 | aio_req req; /* currently processed request */ |
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162 | void *dbuf; |
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163 | DIR *dirp; |
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164 | } worker; |
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165 | |
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166 | static worker wrk_first = { &wrk_first, &wrk_first, 0 }; |
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167 | |
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168 | static void worker_clear (worker *wrk) |
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169 | { |
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170 | if (wrk->dirp) |
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171 | { |
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172 | closedir (wrk->dirp); |
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173 | wrk->dirp = 0; |
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174 | } |
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175 | |
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176 | if (wrk->dbuf) |
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177 | { |
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178 | free (wrk->dbuf); |
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179 | wrk->dbuf = 0; |
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180 | } |
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181 | } |
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182 | |
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183 | static void worker_free (worker *wrk) |
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184 | { |
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185 | wrk->next->prev = wrk->prev; |
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186 | wrk->prev->next = wrk->next; |
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187 | |
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188 | free (wrk); |
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189 | } |
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190 | |
95 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
191 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
96 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
192 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
97 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
193 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
98 | |
194 | |
99 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
195 | /* |
100 | static volatile aio_req ress, rese; /* queue start, queue end */ |
196 | * a somewhat faster data structure might be nice, but |
101 | |
197 | * with 8 priorities this actually needs <20 insns |
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198 | * per shift, the most expensive operation. |
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199 | */ |
102 | typedef struct aio_grp |
200 | typedef struct { |
103 | { |
201 | aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */ |
104 | struct aio_cb *first, *last; |
202 | int size; |
105 | SV *callback; |
203 | } reqq; |
106 | int busycount; |
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107 | } aio_grp; |
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108 | |
204 | |
109 | static void aio_grp_begin (aio_grp *grp) |
205 | static reqq req_queue; |
110 | { |
206 | static reqq res_queue; |
111 | ++grp->busycount; |
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112 | } |
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113 | |
207 | |
114 | static void aio_grp_end (aio_grp *grp) |
208 | int reqq_push (reqq *q, aio_req req) |
115 | { |
209 | { |
116 | --grp->busycount; |
210 | int pri = req->pri; |
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211 | req->next = 0; |
117 | |
212 | |
118 | if (grp->busycount) |
213 | if (q->qe[pri]) |
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214 | { |
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215 | q->qe[pri]->next = req; |
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216 | q->qe[pri] = req; |
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217 | } |
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218 | else |
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219 | q->qe[pri] = q->qs[pri] = req; |
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220 | |
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221 | return q->size++; |
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222 | } |
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223 | |
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224 | aio_req reqq_shift (reqq *q) |
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225 | { |
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226 | int pri; |
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227 | |
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228 | if (!q->size) |
119 | return; |
229 | return 0; |
120 | |
230 | |
121 | SvREFCNT_dec (grp->callback); |
231 | --q->size; |
122 | grp->callback = 0; |
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123 | } |
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124 | |
232 | |
125 | static aio_grp *aio_grp_new () |
233 | for (pri = NUM_PRI; pri--; ) |
126 | { |
234 | { |
127 | aio_grp *grp; |
235 | aio_req req = q->qs[pri]; |
128 | |
236 | |
129 | Newz (0, grp, 1, aio_grp); |
237 | if (req) |
130 | aio_grp_begin (grp); |
238 | { |
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239 | if (!(q->qs[pri] = req->next)) |
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240 | q->qe[pri] = 0; |
131 | |
241 | |
132 | return grp; |
242 | return req; |
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243 | } |
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244 | } |
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245 | |
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246 | abort (); |
133 | } |
247 | } |
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248 | |
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249 | static int poll_cb (int max); |
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250 | static void req_invoke (aio_req req); |
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251 | static void req_free (aio_req req); |
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252 | static void req_cancel (aio_req req); |
134 | |
253 | |
135 | /* must be called at most once */ |
254 | /* must be called at most once */ |
136 | static SV *req_sv (aio_req req) |
255 | static SV *req_sv (aio_req req, const char *klass) |
137 | { |
256 | { |
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257 | if (!req->self) |
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258 | { |
138 | req->self = (SV *)newHV (); |
259 | req->self = (SV *)newHV (); |
139 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
260 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
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261 | } |
140 | |
262 | |
141 | return sv_bless (newRV_noinc (req->self), gv_stashpv (AIO_CB_KLASS, 1)); |
263 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
142 | } |
264 | } |
143 | |
265 | |
144 | static aio_req SvAIO_REQ (SV *sv) |
266 | static aio_req SvAIO_REQ (SV *sv) |
145 | { |
267 | { |
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268 | MAGIC *mg; |
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269 | |
146 | if (!sv_derived_from (sv, AIO_CB_KLASS) || !SvROK (sv)) |
270 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
147 | croak ("object of class " AIO_CB_KLASS " expected"); |
271 | croak ("object of class " AIO_REQ_KLASS " expected"); |
148 | |
272 | |
149 | MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
273 | mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
150 | |
274 | |
151 | return mg ? (aio_req)mg->mg_ptr : 0; |
275 | return mg ? (aio_req)mg->mg_ptr : 0; |
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276 | } |
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277 | |
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278 | static void aio_grp_feed (aio_req grp) |
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279 | { |
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280 | while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) |
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281 | { |
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282 | int old_len = grp->length; |
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283 | |
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284 | if (grp->fh2 && SvOK (grp->fh2)) |
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285 | { |
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286 | dSP; |
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287 | |
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288 | ENTER; |
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289 | SAVETMPS; |
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290 | PUSHMARK (SP); |
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291 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
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292 | PUTBACK; |
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293 | call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); |
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294 | SPAGAIN; |
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295 | FREETMPS; |
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296 | LEAVE; |
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297 | } |
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298 | |
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299 | /* stop if no progress has been made */ |
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300 | if (old_len == grp->length) |
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301 | { |
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302 | SvREFCNT_dec (grp->fh2); |
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303 | grp->fh2 = 0; |
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304 | break; |
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305 | } |
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306 | } |
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307 | } |
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308 | |
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309 | static void aio_grp_dec (aio_req grp) |
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310 | { |
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311 | --grp->length; |
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312 | |
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313 | /* call feeder, if applicable */ |
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314 | aio_grp_feed (grp); |
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315 | |
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316 | /* finish, if done */ |
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317 | if (!grp->length && grp->fd) |
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318 | { |
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319 | req_invoke (grp); |
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320 | req_free (grp); |
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321 | } |
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322 | } |
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323 | |
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324 | static void poll_wait () |
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325 | { |
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326 | fd_set rfd; |
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327 | |
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328 | while (nreqs) |
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329 | { |
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330 | int size; |
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331 | #if !(__i386 || __x86_64) /* safe without sempahore on these archs */ |
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332 | LOCK (reslock); |
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333 | #endif |
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334 | size = res_queue.size; |
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335 | #if !(__i386 || __x86_64) /* safe without sempahore on these archs */ |
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336 | UNLOCK (reslock); |
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337 | #endif |
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338 | |
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339 | if (size) |
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340 | return; |
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341 | |
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342 | FD_ZERO(&rfd); |
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343 | FD_SET(respipe [0], &rfd); |
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344 | |
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345 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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346 | } |
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347 | } |
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348 | |
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349 | static void req_invoke (aio_req req) |
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350 | { |
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351 | dSP; |
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352 | |
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353 | if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
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354 | { |
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355 | errno = req->errorno; |
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356 | |
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357 | ENTER; |
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358 | SAVETMPS; |
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359 | PUSHMARK (SP); |
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360 | EXTEND (SP, 1); |
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361 | |
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362 | switch (req->type) |
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363 | { |
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364 | case REQ_READDIR: |
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365 | { |
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366 | SV *rv = &PL_sv_undef; |
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367 | |
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368 | if (req->result >= 0) |
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369 | { |
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370 | int i; |
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371 | char *buf = req->data2ptr; |
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372 | AV *av = newAV (); |
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373 | |
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374 | av_extend (av, req->result - 1); |
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375 | |
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376 | for (i = 0; i < req->result; ++i) |
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377 | { |
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378 | SV *sv = newSVpv (buf, 0); |
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379 | |
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380 | av_store (av, i, sv); |
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381 | buf += SvCUR (sv) + 1; |
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382 | } |
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383 | |
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384 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
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385 | } |
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386 | |
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387 | PUSHs (rv); |
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388 | } |
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389 | break; |
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390 | |
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391 | case REQ_OPEN: |
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392 | { |
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393 | /* convert fd to fh */ |
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394 | SV *fh; |
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395 | |
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396 | PUSHs (sv_2mortal (newSViv (req->result))); |
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397 | PUTBACK; |
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398 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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399 | SPAGAIN; |
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400 | |
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401 | fh = SvREFCNT_inc (POPs); |
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402 | |
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403 | PUSHMARK (SP); |
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404 | XPUSHs (sv_2mortal (fh)); |
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405 | } |
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406 | break; |
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407 | |
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408 | case REQ_GROUP: |
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409 | req->fd = 2; /* mark group as finished */ |
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410 | |
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411 | if (req->data) |
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412 | { |
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413 | int i; |
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414 | AV *av = (AV *)req->data; |
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415 | |
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416 | EXTEND (SP, AvFILL (av) + 1); |
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417 | for (i = 0; i <= AvFILL (av); ++i) |
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418 | PUSHs (*av_fetch (av, i, 0)); |
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419 | } |
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420 | break; |
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421 | |
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422 | case REQ_NOP: |
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423 | case REQ_BUSY: |
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424 | break; |
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425 | |
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426 | default: |
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427 | PUSHs (sv_2mortal (newSViv (req->result))); |
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428 | break; |
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429 | } |
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430 | |
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431 | |
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432 | PUTBACK; |
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433 | call_sv (req->callback, G_VOID | G_EVAL); |
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434 | SPAGAIN; |
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435 | |
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436 | FREETMPS; |
|
|
437 | LEAVE; |
|
|
438 | } |
|
|
439 | |
|
|
440 | if (req->grp) |
|
|
441 | { |
|
|
442 | aio_req grp = req->grp; |
|
|
443 | |
|
|
444 | /* unlink request */ |
|
|
445 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
|
|
446 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
|
|
447 | |
|
|
448 | if (grp->grp_first == req) |
|
|
449 | grp->grp_first = req->grp_next; |
|
|
450 | |
|
|
451 | aio_grp_dec (grp); |
|
|
452 | } |
|
|
453 | |
|
|
454 | if (SvTRUE (ERRSV)) |
|
|
455 | { |
|
|
456 | req_free (req); |
|
|
457 | croak (0); |
|
|
458 | } |
152 | } |
459 | } |
153 | |
460 | |
154 | static void req_free (aio_req req) |
461 | static void req_free (aio_req req) |
155 | { |
462 | { |
156 | if (req->self) |
463 | if (req->self) |
157 | { |
464 | { |
158 | sv_unmagic (req->self, PERL_MAGIC_ext); |
465 | sv_unmagic (req->self, PERL_MAGIC_ext); |
159 | SvREFCNT_dec (req->self); |
466 | SvREFCNT_dec (req->self); |
160 | } |
467 | } |
161 | |
468 | |
162 | if (req->data) |
|
|
163 | SvREFCNT_dec (req->data); |
469 | SvREFCNT_dec (req->data); |
164 | |
|
|
165 | if (req->fh) |
|
|
166 | SvREFCNT_dec (req->fh); |
470 | SvREFCNT_dec (req->fh); |
167 | |
|
|
168 | if (req->fh2) |
|
|
169 | SvREFCNT_dec (req->fh2); |
471 | SvREFCNT_dec (req->fh2); |
170 | |
|
|
171 | if (req->statdata) |
|
|
172 | Safefree (req->statdata); |
|
|
173 | |
|
|
174 | if (req->callback) |
|
|
175 | SvREFCNT_dec (req->callback); |
472 | SvREFCNT_dec (req->callback); |
|
|
473 | Safefree (req->statdata); |
176 | |
474 | |
177 | if (req->type == REQ_READDIR && req->result >= 0) |
475 | if (req->type == REQ_READDIR) |
178 | free (req->data2ptr); |
476 | free (req->data2ptr); |
179 | |
477 | |
180 | Safefree (req); |
478 | Safefree (req); |
181 | } |
479 | } |
182 | |
480 | |
183 | static void |
481 | static void req_cancel_subs (aio_req grp) |
184 | poll_wait () |
|
|
185 | { |
482 | { |
186 | if (nreqs && !ress) |
483 | aio_req sub; |
187 | { |
|
|
188 | fd_set rfd; |
|
|
189 | FD_ZERO(&rfd); |
|
|
190 | FD_SET(respipe [0], &rfd); |
|
|
191 | |
484 | |
192 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
485 | if (grp->type != REQ_GROUP) |
193 | } |
486 | return; |
194 | } |
|
|
195 | |
487 | |
196 | static int |
488 | SvREFCNT_dec (grp->fh2); |
197 | poll_cb () |
489 | grp->fh2 = 0; |
|
|
490 | |
|
|
491 | for (sub = grp->grp_first; sub; sub = sub->grp_next) |
|
|
492 | req_cancel (sub); |
|
|
493 | } |
|
|
494 | |
|
|
495 | static void req_cancel (aio_req req) |
|
|
496 | { |
|
|
497 | req->flags |= FLAG_CANCELLED; |
|
|
498 | |
|
|
499 | req_cancel_subs (req); |
|
|
500 | } |
|
|
501 | |
|
|
502 | static int poll_cb (int max) |
198 | { |
503 | { |
199 | dSP; |
504 | dSP; |
200 | int count = 0; |
505 | int count = 0; |
201 | int do_croak = 0; |
506 | int do_croak = 0; |
202 | aio_req req; |
507 | aio_req req; |
203 | |
508 | |
204 | for (;;) |
509 | for (;;) |
205 | { |
510 | { |
206 | pthread_mutex_lock (&reslock); |
511 | while (max <= 0 || count < max) |
207 | req = ress; |
|
|
208 | |
|
|
209 | if (req) |
|
|
210 | { |
512 | { |
211 | ress = req->next; |
513 | LOCK (reslock); |
|
|
514 | req = reqq_shift (&res_queue); |
212 | |
515 | |
213 | if (!ress) |
516 | if (req) |
214 | { |
517 | { |
|
|
518 | if (!res_queue.size) |
|
|
519 | { |
215 | /* read any signals sent by the worker threads */ |
520 | /* read any signals sent by the worker threads */ |
216 | char buf [32]; |
521 | char buf [32]; |
217 | while (read (respipe [0], buf, 32) == 32) |
522 | while (read (respipe [0], buf, 32) == 32) |
|
|
523 | ; |
218 | ; |
524 | } |
219 | |
|
|
220 | rese = 0; |
|
|
221 | } |
525 | } |
222 | } |
|
|
223 | |
526 | |
224 | pthread_mutex_unlock (&reslock); |
527 | UNLOCK (reslock); |
225 | |
528 | |
226 | if (!req) |
529 | if (!req) |
227 | break; |
530 | break; |
228 | |
531 | |
229 | nreqs--; |
532 | --nreqs; |
230 | |
533 | |
231 | if (req->type == REQ_QUIT) |
534 | if (req->type == REQ_QUIT) |
232 | started--; |
535 | --started; |
233 | else |
536 | else if (req->type == REQ_GROUP && req->length) |
234 | { |
|
|
235 | int errorno = errno; |
|
|
236 | errno = req->errorno; |
|
|
237 | |
|
|
238 | if (req->type == REQ_READ) |
|
|
239 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
|
|
240 | |
|
|
241 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
|
|
242 | SvREADONLY_off (req->data); |
|
|
243 | |
|
|
244 | if (req->statdata) |
|
|
245 | { |
537 | { |
246 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
538 | req->fd = 1; /* mark request as delayed */ |
247 | PL_laststatval = req->result; |
539 | continue; |
248 | PL_statcache = *(req->statdata); |
|
|
249 | } |
|
|
250 | |
|
|
251 | ENTER; |
|
|
252 | PUSHMARK (SP); |
|
|
253 | |
|
|
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 | } |
540 | } |
277 | else |
541 | else |
278 | { |
542 | { |
279 | XPUSHs (sv_2mortal (newSViv (req->result))); |
|
|
280 | |
|
|
281 | if (req->type == REQ_OPEN) |
543 | if (req->type == REQ_READ) |
|
|
544 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
|
|
545 | |
|
|
546 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
|
|
547 | SvREADONLY_off (req->data); |
|
|
548 | |
|
|
549 | if (req->statdata) |
282 | { |
550 | { |
283 | /* convert fd to fh */ |
551 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
284 | SV *fh; |
552 | PL_laststatval = req->result; |
285 | |
553 | PL_statcache = *(req->statdata); |
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 | } |
554 | } |
|
|
555 | |
|
|
556 | req_invoke (req); |
|
|
557 | |
|
|
558 | count++; |
295 | } |
559 | } |
296 | |
560 | |
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); |
561 | req_free (req); |
306 | croak (0); |
|
|
307 | } |
|
|
308 | } |
|
|
309 | |
|
|
310 | LEAVE; |
|
|
311 | |
|
|
312 | errno = errorno; |
|
|
313 | count++; |
|
|
314 | } |
562 | } |
315 | |
563 | |
316 | req_free (req); |
564 | if (nreqs <= max_outstanding) |
|
|
565 | break; |
|
|
566 | |
|
|
567 | poll_wait (); |
|
|
568 | |
|
|
569 | max = 0; |
317 | } |
570 | } |
318 | |
571 | |
319 | return count; |
572 | return count; |
320 | } |
573 | } |
321 | |
574 | |
322 | static void *aio_proc(void *arg); |
575 | static void *aio_proc(void *arg); |
323 | |
576 | |
324 | static void |
|
|
325 | start_thread (void) |
577 | static void start_thread (void) |
326 | { |
578 | { |
327 | sigset_t fullsigset, oldsigset; |
579 | sigset_t fullsigset, oldsigset; |
328 | pthread_t tid; |
|
|
329 | pthread_attr_t attr; |
580 | pthread_attr_t attr; |
|
|
581 | |
|
|
582 | worker *wrk = calloc (1, sizeof (worker)); |
|
|
583 | |
|
|
584 | if (!wrk) |
|
|
585 | croak ("unable to allocate worker thread data"); |
330 | |
586 | |
331 | pthread_attr_init (&attr); |
587 | pthread_attr_init (&attr); |
332 | pthread_attr_setstacksize (&attr, STACKSIZE); |
588 | pthread_attr_setstacksize (&attr, STACKSIZE); |
333 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
589 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
334 | |
590 | |
335 | sigfillset (&fullsigset); |
591 | sigfillset (&fullsigset); |
|
|
592 | |
|
|
593 | LOCK (wrklock); |
336 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
594 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
337 | |
595 | |
338 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
596 | if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0) |
|
|
597 | { |
|
|
598 | wrk->prev = &wrk_first; |
|
|
599 | wrk->next = wrk_first.next; |
|
|
600 | wrk_first.next->prev = wrk; |
|
|
601 | wrk_first.next = wrk; |
339 | started++; |
602 | ++started; |
|
|
603 | } |
|
|
604 | else |
|
|
605 | free (wrk); |
340 | |
606 | |
341 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
607 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
|
|
608 | UNLOCK (wrklock); |
342 | } |
609 | } |
343 | |
610 | |
344 | static void |
|
|
345 | req_send (aio_req req) |
611 | static void req_send (aio_req req) |
346 | { |
612 | { |
347 | while (started < wanted && nreqs >= started) |
613 | while (started < wanted && nreqs >= started) |
348 | start_thread (); |
614 | start_thread (); |
349 | |
615 | |
350 | nreqs++; |
616 | ++nreqs; |
351 | |
617 | |
352 | pthread_mutex_lock (&reqlock); |
618 | LOCK (reqlock); |
353 | |
619 | reqq_push (&req_queue, req); |
354 | req->next = 0; |
|
|
355 | |
|
|
356 | if (reqe) |
|
|
357 | { |
|
|
358 | reqe->next = req; |
|
|
359 | reqe = req; |
|
|
360 | } |
|
|
361 | else |
|
|
362 | reqe = reqs = req; |
|
|
363 | |
|
|
364 | pthread_cond_signal (&reqwait); |
620 | pthread_cond_signal (&reqwait); |
365 | pthread_mutex_unlock (&reqlock); |
621 | UNLOCK (reqlock); |
366 | |
|
|
367 | if (nreqs > max_outstanding) |
|
|
368 | for (;;) |
|
|
369 | { |
|
|
370 | poll_cb (); |
|
|
371 | |
|
|
372 | if (nreqs <= max_outstanding) |
|
|
373 | break; |
|
|
374 | |
|
|
375 | poll_wait (); |
|
|
376 | } |
|
|
377 | } |
622 | } |
378 | |
623 | |
379 | static void |
624 | static void end_thread (void) |
380 | end_thread (void) |
|
|
381 | { |
625 | { |
382 | aio_req req; |
626 | aio_req req; |
|
|
627 | |
383 | Newz (0, req, 1, aio_cb); |
628 | Newz (0, req, 1, aio_cb); |
|
|
629 | |
384 | req->type = REQ_QUIT; |
630 | req->type = REQ_QUIT; |
|
|
631 | req->pri = PRI_MAX + PRI_BIAS; |
385 | |
632 | |
386 | req_send (req); |
633 | req_send (req); |
387 | } |
634 | } |
388 | |
635 | |
389 | static void min_parallel (int nthreads) |
636 | static void min_parallel (int nthreads) |
… | |
… | |
406 | } |
653 | } |
407 | |
654 | |
408 | while (started > wanted) |
655 | while (started > wanted) |
409 | { |
656 | { |
410 | poll_wait (); |
657 | poll_wait (); |
411 | poll_cb (); |
658 | poll_cb (0); |
412 | } |
659 | } |
413 | } |
660 | } |
414 | |
661 | |
415 | static void create_pipe () |
662 | static void create_pipe () |
416 | { |
663 | { |
… | |
… | |
436 | * normal read/write by using a mutex. slows down execution a lot, |
683 | * normal read/write by using a mutex. slows down execution a lot, |
437 | * but that's your problem, not mine. |
684 | * but that's your problem, not mine. |
438 | */ |
685 | */ |
439 | static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
686 | static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
440 | |
687 | |
441 | static ssize_t |
688 | 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 | { |
689 | { |
444 | ssize_t res; |
690 | ssize_t res; |
445 | off_t ooffset; |
691 | off_t ooffset; |
446 | |
692 | |
447 | pthread_mutex_lock (&preadwritelock); |
693 | LOCK (preadwritelock); |
448 | ooffset = lseek (fd, 0, SEEK_CUR); |
694 | ooffset = lseek (fd, 0, SEEK_CUR); |
449 | lseek (fd, offset, SEEK_SET); |
695 | lseek (fd, offset, SEEK_SET); |
450 | res = read (fd, buf, count); |
696 | res = read (fd, buf, count); |
451 | lseek (fd, ooffset, SEEK_SET); |
697 | lseek (fd, ooffset, SEEK_SET); |
452 | pthread_mutex_unlock (&preadwritelock); |
698 | UNLOCK (preadwritelock); |
453 | |
699 | |
454 | return res; |
700 | return res; |
455 | } |
701 | } |
456 | |
702 | |
457 | static ssize_t |
|
|
458 | pwrite (int fd, void *buf, size_t count, off_t offset) |
703 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
459 | { |
704 | { |
460 | ssize_t res; |
705 | ssize_t res; |
461 | off_t ooffset; |
706 | off_t ooffset; |
462 | |
707 | |
463 | pthread_mutex_lock (&preadwritelock); |
708 | LOCK (preadwritelock); |
464 | ooffset = lseek (fd, 0, SEEK_CUR); |
709 | ooffset = lseek (fd, 0, SEEK_CUR); |
465 | lseek (fd, offset, SEEK_SET); |
710 | lseek (fd, offset, SEEK_SET); |
466 | res = write (fd, buf, count); |
711 | res = write (fd, buf, count); |
467 | lseek (fd, offset, SEEK_SET); |
712 | lseek (fd, offset, SEEK_SET); |
468 | pthread_mutex_unlock (&preadwritelock); |
713 | UNLOCK (preadwritelock); |
469 | |
714 | |
470 | return res; |
715 | return res; |
471 | } |
716 | } |
472 | #endif |
717 | #endif |
473 | |
718 | |
474 | #if !HAVE_FDATASYNC |
719 | #if !HAVE_FDATASYNC |
475 | # define fdatasync fsync |
720 | # define fdatasync fsync |
476 | #endif |
721 | #endif |
477 | |
722 | |
478 | #if !HAVE_READAHEAD |
723 | #if !HAVE_READAHEAD |
479 | # define readahead aio_readahead |
724 | # define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) |
480 | |
725 | |
481 | static ssize_t |
726 | static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) |
482 | readahead (int fd, off_t offset, size_t count) |
|
|
483 | { |
727 | { |
484 | char readahead_buf[4096]; |
728 | dBUF; |
485 | |
729 | |
486 | while (count > 0) |
730 | while (count > 0) |
487 | { |
731 | { |
488 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
732 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
489 | |
733 | |
490 | pread (fd, readahead_buf, len, offset); |
734 | pread (fd, aio_buf, len, offset); |
491 | offset += len; |
735 | offset += len; |
492 | count -= len; |
736 | count -= len; |
493 | } |
737 | } |
494 | |
738 | |
495 | errno = 0; |
739 | errno = 0; |
496 | } |
740 | } |
|
|
741 | |
497 | #endif |
742 | #endif |
498 | |
743 | |
499 | #if !HAVE_READDIR_R |
744 | #if !HAVE_READDIR_R |
500 | # define readdir_r aio_readdir_r |
745 | # define readdir_r aio_readdir_r |
501 | |
746 | |
502 | static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
747 | static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
503 | |
748 | |
504 | static int |
|
|
505 | readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
749 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
506 | { |
750 | { |
507 | struct dirent *e; |
751 | struct dirent *e; |
508 | int errorno; |
752 | int errorno; |
509 | |
753 | |
510 | pthread_mutex_lock (&readdirlock); |
754 | LOCK (readdirlock); |
511 | |
755 | |
512 | e = readdir (dirp); |
756 | e = readdir (dirp); |
513 | errorno = errno; |
757 | errorno = errno; |
514 | |
758 | |
515 | if (e) |
759 | if (e) |
… | |
… | |
518 | strcpy (ent->d_name, e->d_name); |
762 | strcpy (ent->d_name, e->d_name); |
519 | } |
763 | } |
520 | else |
764 | else |
521 | *res = 0; |
765 | *res = 0; |
522 | |
766 | |
523 | pthread_mutex_unlock (&readdirlock); |
767 | UNLOCK (readdirlock); |
524 | |
768 | |
525 | errno = errorno; |
769 | errno = errorno; |
526 | return e ? 0 : -1; |
770 | return e ? 0 : -1; |
527 | } |
771 | } |
528 | #endif |
772 | #endif |
529 | |
773 | |
530 | /* sendfile always needs emulation */ |
774 | /* sendfile always needs emulation */ |
531 | static ssize_t |
|
|
532 | sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
775 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) |
533 | { |
776 | { |
534 | ssize_t res; |
777 | ssize_t res; |
535 | |
778 | |
536 | if (!count) |
779 | if (!count) |
537 | return 0; |
780 | return 0; |
… | |
… | |
548 | { |
791 | { |
549 | off_t sbytes; |
792 | off_t sbytes; |
550 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
793 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
551 | |
794 | |
552 | if (res < 0 && sbytes) |
795 | if (res < 0 && sbytes) |
553 | /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ |
796 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
554 | res = sbytes; |
797 | res = sbytes; |
555 | } |
798 | } |
556 | |
799 | |
557 | # elif __hpux |
800 | # elif __hpux |
558 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
801 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
… | |
… | |
586 | #endif |
829 | #endif |
587 | ) |
830 | ) |
588 | ) |
831 | ) |
589 | { |
832 | { |
590 | /* emulate sendfile. this is a major pain in the ass */ |
833 | /* emulate sendfile. this is a major pain in the ass */ |
591 | char buf[4096]; |
834 | dBUF; |
|
|
835 | |
592 | res = 0; |
836 | res = 0; |
593 | |
837 | |
594 | while (count) |
838 | while (count) |
595 | { |
839 | { |
596 | ssize_t cnt; |
840 | ssize_t cnt; |
597 | |
841 | |
598 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
842 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
599 | |
843 | |
600 | if (cnt <= 0) |
844 | if (cnt <= 0) |
601 | { |
845 | { |
602 | if (cnt && !res) res = -1; |
846 | if (cnt && !res) res = -1; |
603 | break; |
847 | break; |
604 | } |
848 | } |
605 | |
849 | |
606 | cnt = write (ofd, buf, cnt); |
850 | cnt = write (ofd, aio_buf, cnt); |
607 | |
851 | |
608 | if (cnt <= 0) |
852 | if (cnt <= 0) |
609 | { |
853 | { |
610 | if (cnt && !res) res = -1; |
854 | if (cnt && !res) res = -1; |
611 | break; |
855 | break; |
… | |
… | |
619 | |
863 | |
620 | return res; |
864 | return res; |
621 | } |
865 | } |
622 | |
866 | |
623 | /* read a full directory */ |
867 | /* read a full directory */ |
624 | static int |
868 | static void scandir_ (aio_req req, worker *self) |
625 | scandir_ (const char *path, void **namesp) |
|
|
626 | { |
869 | { |
627 | DIR *dirp = opendir (path); |
870 | DIR *dirp; |
628 | union |
871 | union |
629 | { |
872 | { |
630 | struct dirent d; |
873 | struct dirent d; |
631 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
874 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
632 | } u; |
875 | } *u; |
633 | struct dirent *entp; |
876 | struct dirent *entp; |
634 | char *name, *names; |
877 | char *name, *names; |
635 | int memlen = 4096; |
878 | int memlen = 4096; |
636 | int memofs = 0; |
879 | int memofs = 0; |
637 | int res = 0; |
880 | int res = 0; |
638 | int errorno; |
881 | int errorno; |
639 | |
882 | |
640 | if (!dirp) |
883 | LOCK (wrklock); |
641 | return -1; |
884 | self->dirp = dirp = opendir (req->dataptr); |
642 | |
885 | self->dbuf = u = malloc (sizeof (*u)); |
643 | names = malloc (memlen); |
886 | req->data2ptr = names = malloc (memlen); |
|
|
887 | UNLOCK (wrklock); |
644 | |
888 | |
|
|
889 | if (dirp && u && names) |
645 | for (;;) |
890 | for (;;) |
646 | { |
891 | { |
|
|
892 | errno = 0; |
647 | errno = 0, readdir_r (dirp, &u.d, &entp); |
893 | readdir_r (dirp, &u->d, &entp); |
648 | |
894 | |
649 | if (!entp) |
895 | if (!entp) |
650 | break; |
896 | break; |
651 | |
897 | |
652 | name = entp->d_name; |
898 | name = entp->d_name; |
653 | |
899 | |
654 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
900 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
655 | { |
901 | { |
656 | int len = strlen (name) + 1; |
902 | int len = strlen (name) + 1; |
657 | |
903 | |
658 | res++; |
904 | res++; |
659 | |
905 | |
660 | while (memofs + len > memlen) |
906 | while (memofs + len > memlen) |
661 | { |
907 | { |
662 | memlen *= 2; |
908 | memlen *= 2; |
|
|
909 | LOCK (wrklock); |
663 | names = realloc (names, memlen); |
910 | req->data2ptr = names = realloc (names, memlen); |
|
|
911 | UNLOCK (wrklock); |
|
|
912 | |
664 | if (!names) |
913 | if (!names) |
665 | break; |
914 | break; |
666 | } |
915 | } |
667 | |
916 | |
668 | memcpy (names + memofs, name, len); |
917 | memcpy (names + memofs, name, len); |
669 | memofs += len; |
918 | memofs += len; |
670 | } |
919 | } |
671 | } |
920 | } |
672 | |
921 | |
673 | errorno = errno; |
|
|
674 | closedir (dirp); |
|
|
675 | |
|
|
676 | if (errorno) |
922 | if (errno) |
677 | { |
|
|
678 | free (names); |
|
|
679 | errno = errorno; |
|
|
680 | res = -1; |
923 | res = -1; |
681 | } |
924 | |
682 | |
925 | req->result = res; |
683 | *namesp = (void *)names; |
|
|
684 | return res; |
|
|
685 | } |
926 | } |
686 | |
927 | |
687 | /*****************************************************************************/ |
928 | /*****************************************************************************/ |
688 | |
929 | |
689 | static void * |
|
|
690 | aio_proc (void *thr_arg) |
930 | static void *aio_proc (void *thr_arg) |
691 | { |
931 | { |
692 | aio_req req; |
932 | aio_req req; |
693 | int type; |
933 | int type; |
|
|
934 | worker *self = (worker *)thr_arg; |
694 | |
935 | |
695 | do |
936 | do |
696 | { |
937 | { |
697 | pthread_mutex_lock (&reqlock); |
938 | LOCK (reqlock); |
698 | |
939 | |
699 | for (;;) |
940 | for (;;) |
700 | { |
941 | { |
701 | req = reqs; |
942 | self->req = req = reqq_shift (&req_queue); |
702 | |
|
|
703 | if (reqs) |
|
|
704 | { |
|
|
705 | reqs = reqs->next; |
|
|
706 | if (!reqs) reqe = 0; |
|
|
707 | } |
|
|
708 | |
943 | |
709 | if (req) |
944 | if (req) |
710 | break; |
945 | break; |
711 | |
946 | |
712 | pthread_cond_wait (&reqwait, &reqlock); |
947 | pthread_cond_wait (&reqwait, &reqlock); |
713 | } |
948 | } |
714 | |
949 | |
715 | pthread_mutex_unlock (&reqlock); |
950 | UNLOCK (reqlock); |
716 | |
951 | |
717 | errno = 0; /* strictly unnecessary */ |
952 | errno = 0; /* strictly unnecessary */ |
|
|
953 | type = req->type; /* remember type for QUIT check */ |
718 | |
954 | |
719 | if (!req->cancelled) |
955 | if (!(req->flags & FLAG_CANCELLED)) |
720 | switch (req->type) |
956 | switch (type) |
721 | { |
957 | { |
722 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
958 | 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; |
959 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
724 | |
960 | |
725 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
961 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
726 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; |
962 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break; |
727 | |
963 | |
728 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
964 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
729 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
965 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
730 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
966 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
731 | |
967 | |
… | |
… | |
737 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
973 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
738 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
974 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
739 | |
975 | |
740 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
976 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
741 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
977 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
742 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
978 | case REQ_READDIR: scandir_ (req, self); break; |
743 | |
979 | |
|
|
980 | case REQ_BUSY: |
|
|
981 | { |
|
|
982 | struct timeval tv; |
|
|
983 | |
|
|
984 | tv.tv_sec = req->fd; |
|
|
985 | tv.tv_usec = req->fd2; |
|
|
986 | |
|
|
987 | req->result = select (0, 0, 0, 0, &tv); |
|
|
988 | } |
|
|
989 | |
|
|
990 | case REQ_GROUP: |
|
|
991 | case REQ_NOP: |
744 | case REQ_QUIT: |
992 | case REQ_QUIT: |
745 | break; |
993 | break; |
746 | |
994 | |
747 | default: |
995 | default: |
748 | req->result = ENOSYS; |
996 | req->result = ENOSYS; |
749 | break; |
997 | break; |
750 | } |
998 | } |
751 | |
999 | |
752 | req->errorno = errno; |
1000 | req->errorno = errno; |
753 | |
1001 | |
754 | pthread_mutex_lock (&reslock); |
1002 | LOCK (reslock); |
755 | |
1003 | |
756 | req->next = 0; |
1004 | if (!reqq_push (&res_queue, req)) |
757 | |
|
|
758 | if (rese) |
|
|
759 | { |
|
|
760 | rese->next = req; |
|
|
761 | rese = req; |
|
|
762 | } |
|
|
763 | else |
|
|
764 | { |
|
|
765 | rese = ress = req; |
|
|
766 | |
|
|
767 | /* write a dummy byte to the pipe so fh becomes ready */ |
1005 | /* write a dummy byte to the pipe so fh becomes ready */ |
768 | write (respipe [1], &respipe, 1); |
1006 | write (respipe [1], &respipe, 1); |
769 | } |
|
|
770 | |
1007 | |
771 | pthread_mutex_unlock (&reslock); |
1008 | self->req = 0; |
|
|
1009 | worker_clear (self); |
|
|
1010 | |
|
|
1011 | UNLOCK (reslock); |
772 | } |
1012 | } |
773 | while (type != REQ_QUIT); |
1013 | while (type != REQ_QUIT); |
774 | |
1014 | |
|
|
1015 | LOCK (wrklock); |
|
|
1016 | worker_free (self); |
|
|
1017 | UNLOCK (wrklock); |
|
|
1018 | |
775 | return 0; |
1019 | return 0; |
776 | } |
1020 | } |
777 | |
1021 | |
778 | /*****************************************************************************/ |
1022 | /*****************************************************************************/ |
779 | |
1023 | |
780 | static void atfork_prepare (void) |
1024 | static void atfork_prepare (void) |
781 | { |
1025 | { |
782 | pthread_mutex_lock (&reqlock); |
1026 | LOCK (wrklock); |
783 | pthread_mutex_lock (&reslock); |
1027 | LOCK (reqlock); |
|
|
1028 | LOCK (reslock); |
784 | #if !HAVE_PREADWRITE |
1029 | #if !HAVE_PREADWRITE |
785 | pthread_mutex_lock (&preadwritelock); |
1030 | LOCK (preadwritelock); |
786 | #endif |
1031 | #endif |
787 | #if !HAVE_READDIR_R |
1032 | #if !HAVE_READDIR_R |
788 | pthread_mutex_lock (&readdirlock); |
1033 | LOCK (readdirlock); |
789 | #endif |
1034 | #endif |
790 | } |
1035 | } |
791 | |
1036 | |
792 | static void atfork_parent (void) |
1037 | static void atfork_parent (void) |
793 | { |
1038 | { |
794 | #if !HAVE_READDIR_R |
1039 | #if !HAVE_READDIR_R |
795 | pthread_mutex_unlock (&readdirlock); |
1040 | UNLOCK (readdirlock); |
796 | #endif |
1041 | #endif |
797 | #if !HAVE_PREADWRITE |
1042 | #if !HAVE_PREADWRITE |
798 | pthread_mutex_unlock (&preadwritelock); |
1043 | UNLOCK (preadwritelock); |
799 | #endif |
1044 | #endif |
800 | pthread_mutex_unlock (&reslock); |
1045 | UNLOCK (reslock); |
801 | pthread_mutex_unlock (&reqlock); |
1046 | UNLOCK (reqlock); |
|
|
1047 | UNLOCK (wrklock); |
802 | } |
1048 | } |
803 | |
1049 | |
804 | static void atfork_child (void) |
1050 | static void atfork_child (void) |
805 | { |
1051 | { |
806 | aio_req prv; |
1052 | aio_req prv; |
807 | |
1053 | |
|
|
1054 | while (prv = reqq_shift (&req_queue)) |
|
|
1055 | req_free (prv); |
|
|
1056 | |
|
|
1057 | while (prv = reqq_shift (&res_queue)) |
|
|
1058 | req_free (prv); |
|
|
1059 | |
|
|
1060 | while (wrk_first.next != &wrk_first) |
|
|
1061 | { |
|
|
1062 | worker *wrk = wrk_first.next; |
|
|
1063 | |
|
|
1064 | if (wrk->req) |
|
|
1065 | req_free (wrk->req); |
|
|
1066 | |
|
|
1067 | worker_clear (wrk); |
|
|
1068 | worker_free (wrk); |
|
|
1069 | } |
|
|
1070 | |
808 | started = 0; |
1071 | started = 0; |
809 | |
1072 | nreqs = 0; |
810 | while (reqs) |
|
|
811 | { |
|
|
812 | prv = reqs; |
|
|
813 | reqs = prv->next; |
|
|
814 | req_free (prv); |
|
|
815 | } |
|
|
816 | |
|
|
817 | reqs = reqe = 0; |
|
|
818 | |
|
|
819 | while (ress) |
|
|
820 | { |
|
|
821 | prv = ress; |
|
|
822 | ress = prv->next; |
|
|
823 | req_free (prv); |
|
|
824 | } |
|
|
825 | |
|
|
826 | ress = rese = 0; |
|
|
827 | |
1073 | |
828 | close (respipe [0]); |
1074 | close (respipe [0]); |
829 | close (respipe [1]); |
1075 | close (respipe [1]); |
830 | create_pipe (); |
1076 | create_pipe (); |
831 | |
1077 | |
832 | atfork_parent (); |
1078 | atfork_parent (); |
833 | } |
1079 | } |
834 | |
1080 | |
835 | #define dREQ \ |
1081 | #define dREQ \ |
836 | aio_req req; \ |
1082 | aio_req req; \ |
|
|
1083 | int req_pri = next_pri; \ |
|
|
1084 | next_pri = DEFAULT_PRI + PRI_BIAS; \ |
837 | \ |
1085 | \ |
838 | if (SvOK (callback) && !SvROK (callback)) \ |
1086 | if (SvOK (callback) && !SvROK (callback)) \ |
839 | croak ("callback must be undef or of reference type"); \ |
1087 | croak ("callback must be undef or of reference type"); \ |
840 | \ |
1088 | \ |
841 | Newz (0, req, 1, aio_cb); \ |
1089 | Newz (0, req, 1, aio_cb); \ |
842 | if (!req) \ |
1090 | if (!req) \ |
843 | croak ("out of memory during aio_req allocation"); \ |
1091 | croak ("out of memory during aio_req allocation"); \ |
844 | \ |
1092 | \ |
845 | req->callback = newSVsv (callback) |
1093 | req->callback = newSVsv (callback); \ |
|
|
1094 | req->pri = req_pri |
846 | |
1095 | |
847 | #define REQ_SEND \ |
1096 | #define REQ_SEND \ |
848 | req_send (req); \ |
1097 | req_send (req); \ |
849 | \ |
1098 | \ |
850 | if (GIMME_V != G_VOID) \ |
1099 | if (GIMME_V != G_VOID) \ |
851 | XPUSHs (req_sv (req)); |
1100 | XPUSHs (req_sv (req, AIO_REQ_KLASS)); |
852 | |
1101 | |
853 | MODULE = IO::AIO PACKAGE = IO::AIO |
1102 | MODULE = IO::AIO PACKAGE = IO::AIO |
854 | |
1103 | |
855 | PROTOTYPES: ENABLE |
1104 | PROTOTYPES: ENABLE |
856 | |
1105 | |
… | |
… | |
864 | create_pipe (); |
1113 | create_pipe (); |
865 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
1114 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
866 | } |
1115 | } |
867 | |
1116 | |
868 | void |
1117 | void |
869 | min_parallel (nthreads) |
1118 | min_parallel (int nthreads) |
870 | int nthreads |
|
|
871 | PROTOTYPE: $ |
1119 | PROTOTYPE: $ |
872 | |
1120 | |
873 | void |
1121 | void |
874 | max_parallel (nthreads) |
1122 | max_parallel (int nthreads) |
875 | int nthreads |
|
|
876 | PROTOTYPE: $ |
1123 | PROTOTYPE: $ |
877 | |
1124 | |
878 | int |
1125 | int |
879 | max_outstanding (nreqs) |
1126 | max_outstanding (int maxreqs) |
880 | int nreqs |
1127 | PROTOTYPE: $ |
881 | PROTOTYPE: $ |
|
|
882 | CODE: |
1128 | CODE: |
883 | RETVAL = max_outstanding; |
1129 | RETVAL = max_outstanding; |
884 | max_outstanding = nreqs; |
1130 | max_outstanding = maxreqs; |
|
|
1131 | OUTPUT: |
|
|
1132 | RETVAL |
885 | |
1133 | |
886 | void |
1134 | void |
887 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
1135 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
888 | SV * pathname |
1136 | SV * pathname |
889 | int flags |
1137 | int flags |
… | |
… | |
1103 | req->dataptr = SvPVbyte_nolen (req->data); |
1351 | req->dataptr = SvPVbyte_nolen (req->data); |
1104 | |
1352 | |
1105 | REQ_SEND; |
1353 | REQ_SEND; |
1106 | } |
1354 | } |
1107 | |
1355 | |
1108 | #if 0 |
|
|
1109 | |
|
|
1110 | # undocumented, because it does not cancel active requests |
|
|
1111 | void |
1356 | void |
1112 | cancel_most_requests () |
1357 | aio_busy (delay,callback=&PL_sv_undef) |
|
|
1358 | double delay |
|
|
1359 | SV * callback |
|
|
1360 | PPCODE: |
|
|
1361 | { |
|
|
1362 | dREQ; |
|
|
1363 | |
|
|
1364 | req->type = REQ_BUSY; |
|
|
1365 | req->fd = delay < 0. ? 0 : delay; |
|
|
1366 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
|
|
1367 | |
|
|
1368 | REQ_SEND; |
|
|
1369 | } |
|
|
1370 | |
|
|
1371 | void |
|
|
1372 | aio_group (callback=&PL_sv_undef) |
|
|
1373 | SV * callback |
1113 | PROTOTYPE: |
1374 | PROTOTYPE: ;$ |
1114 | CODE: |
1375 | PPCODE: |
1115 | { |
1376 | { |
1116 | aio_req *req; |
1377 | dREQ; |
1117 | |
1378 | |
1118 | pthread_mutex_lock (&reqlock); |
1379 | req->type = REQ_GROUP; |
1119 | for (req = reqs; req; req = req->next) |
1380 | req_send (req); |
1120 | req->flags |= 1; |
|
|
1121 | pthread_mutex_unlock (&reqlock); |
|
|
1122 | |
1381 | |
1123 | pthread_mutex_lock (&reslock); |
1382 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1124 | for (req = ress; req; req = req->next) |
|
|
1125 | req->flags |= 1; |
|
|
1126 | pthread_mutex_unlock (&reslock); |
|
|
1127 | } |
1383 | } |
1128 | |
1384 | |
1129 | #endif |
1385 | void |
|
|
1386 | aio_nop (callback=&PL_sv_undef) |
|
|
1387 | SV * callback |
|
|
1388 | PPCODE: |
|
|
1389 | { |
|
|
1390 | dREQ; |
|
|
1391 | |
|
|
1392 | req->type = REQ_NOP; |
|
|
1393 | |
|
|
1394 | REQ_SEND; |
|
|
1395 | } |
|
|
1396 | |
|
|
1397 | void |
|
|
1398 | aioreq_pri (int pri = DEFAULT_PRI) |
|
|
1399 | CODE: |
|
|
1400 | if (pri < PRI_MIN) pri = PRI_MIN; |
|
|
1401 | if (pri > PRI_MAX) pri = PRI_MAX; |
|
|
1402 | next_pri = pri + PRI_BIAS; |
|
|
1403 | |
|
|
1404 | void |
|
|
1405 | aioreq_nice (int nice = 0) |
|
|
1406 | CODE: |
|
|
1407 | nice = next_pri - nice; |
|
|
1408 | if (nice < PRI_MIN) nice = PRI_MIN; |
|
|
1409 | if (nice > PRI_MAX) nice = PRI_MAX; |
|
|
1410 | next_pri = nice + PRI_BIAS; |
1130 | |
1411 | |
1131 | void |
1412 | void |
1132 | flush () |
1413 | flush () |
1133 | PROTOTYPE: |
1414 | PROTOTYPE: |
1134 | CODE: |
1415 | CODE: |
1135 | while (nreqs) |
1416 | while (nreqs) |
1136 | { |
1417 | { |
1137 | poll_wait (); |
1418 | poll_wait (); |
1138 | poll_cb (); |
1419 | poll_cb (0); |
1139 | } |
1420 | } |
1140 | |
1421 | |
1141 | void |
1422 | void |
1142 | poll() |
1423 | poll() |
1143 | PROTOTYPE: |
1424 | PROTOTYPE: |
1144 | CODE: |
1425 | CODE: |
1145 | if (nreqs) |
1426 | if (nreqs) |
1146 | { |
1427 | { |
1147 | poll_wait (); |
1428 | poll_wait (); |
1148 | poll_cb (); |
1429 | poll_cb (0); |
1149 | } |
1430 | } |
1150 | |
1431 | |
1151 | int |
1432 | int |
1152 | poll_fileno() |
1433 | poll_fileno() |
1153 | PROTOTYPE: |
1434 | PROTOTYPE: |
… | |
… | |
1158 | |
1439 | |
1159 | int |
1440 | int |
1160 | poll_cb(...) |
1441 | poll_cb(...) |
1161 | PROTOTYPE: |
1442 | PROTOTYPE: |
1162 | CODE: |
1443 | CODE: |
1163 | RETVAL = poll_cb (); |
1444 | RETVAL = poll_cb (0); |
|
|
1445 | OUTPUT: |
|
|
1446 | RETVAL |
|
|
1447 | |
|
|
1448 | int |
|
|
1449 | poll_some(int max = 0) |
|
|
1450 | PROTOTYPE: $ |
|
|
1451 | CODE: |
|
|
1452 | RETVAL = poll_cb (max); |
1164 | OUTPUT: |
1453 | OUTPUT: |
1165 | RETVAL |
1454 | RETVAL |
1166 | |
1455 | |
1167 | void |
1456 | void |
1168 | poll_wait() |
1457 | poll_wait() |
… | |
… | |
1177 | CODE: |
1466 | CODE: |
1178 | RETVAL = nreqs; |
1467 | RETVAL = nreqs; |
1179 | OUTPUT: |
1468 | OUTPUT: |
1180 | RETVAL |
1469 | RETVAL |
1181 | |
1470 | |
|
|
1471 | PROTOTYPES: DISABLE |
|
|
1472 | |
1182 | MODULE = IO::AIO PACKAGE = IO::AIO::CB |
1473 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1183 | |
1474 | |
1184 | void |
1475 | void |
1185 | cancel (aio_req_ornot req) |
1476 | cancel (aio_req_ornot req) |
1186 | PROTOTYPE: |
|
|
1187 | CODE: |
1477 | CODE: |
1188 | req->cancelled = 1; |
1478 | req_cancel (req); |
1189 | |
1479 | |
|
|
1480 | void |
|
|
1481 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
|
|
1482 | CODE: |
|
|
1483 | SvREFCNT_dec (req->callback); |
|
|
1484 | req->callback = newSVsv (callback); |
|
|
1485 | |
|
|
1486 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
|
|
1487 | |
|
|
1488 | void |
|
|
1489 | add (aio_req grp, ...) |
|
|
1490 | PPCODE: |
|
|
1491 | { |
|
|
1492 | int i; |
|
|
1493 | aio_req req; |
|
|
1494 | |
|
|
1495 | if (grp->fd == 2) |
|
|
1496 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
|
|
1497 | |
|
|
1498 | for (i = 1; i < items; ++i ) |
|
|
1499 | { |
|
|
1500 | if (GIMME_V != G_VOID) |
|
|
1501 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
|
|
1502 | |
|
|
1503 | req = SvAIO_REQ (ST (i)); |
|
|
1504 | |
|
|
1505 | if (req) |
|
|
1506 | { |
|
|
1507 | ++grp->length; |
|
|
1508 | req->grp = grp; |
|
|
1509 | |
|
|
1510 | req->grp_prev = 0; |
|
|
1511 | req->grp_next = grp->grp_first; |
|
|
1512 | |
|
|
1513 | if (grp->grp_first) |
|
|
1514 | grp->grp_first->grp_prev = req; |
|
|
1515 | |
|
|
1516 | grp->grp_first = req; |
|
|
1517 | } |
|
|
1518 | } |
|
|
1519 | } |
|
|
1520 | |
|
|
1521 | void |
|
|
1522 | cancel_subs (aio_req_ornot req) |
|
|
1523 | CODE: |
|
|
1524 | req_cancel_subs (req); |
|
|
1525 | |
|
|
1526 | void |
|
|
1527 | result (aio_req grp, ...) |
|
|
1528 | CODE: |
|
|
1529 | { |
|
|
1530 | int i; |
|
|
1531 | AV *av = newAV (); |
|
|
1532 | |
|
|
1533 | for (i = 1; i < items; ++i ) |
|
|
1534 | av_push (av, newSVsv (ST (i))); |
|
|
1535 | |
|
|
1536 | SvREFCNT_dec (grp->data); |
|
|
1537 | grp->data = (SV *)av; |
|
|
1538 | } |
|
|
1539 | |
|
|
1540 | void |
|
|
1541 | limit (aio_req grp, int limit) |
|
|
1542 | CODE: |
|
|
1543 | grp->fd2 = limit; |
|
|
1544 | aio_grp_feed (grp); |
|
|
1545 | |
|
|
1546 | void |
|
|
1547 | feed (aio_req grp, SV *callback=&PL_sv_undef) |
|
|
1548 | CODE: |
|
|
1549 | { |
|
|
1550 | SvREFCNT_dec (grp->fh2); |
|
|
1551 | grp->fh2 = newSVsv (callback); |
|
|
1552 | |
|
|
1553 | if (grp->fd2 <= 0) |
|
|
1554 | grp->fd2 = 2; |
|
|
1555 | |
|
|
1556 | aio_grp_feed (grp); |
|
|
1557 | } |
|
|
1558 | |