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1 | /* solaris */ |
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2 | #define _POSIX_PTHREAD_SEMANTICS 1 |
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3 | |
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4 | #if __linux |
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5 | # define _GNU_SOURCE |
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6 | #endif |
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7 | |
1 | #define _REENTRANT 1 |
8 | #define _REENTRANT 1 |
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9 | |
2 | #include <errno.h> |
10 | #include <errno.h> |
3 | |
11 | |
4 | #include "EXTERN.h" |
12 | #include "EXTERN.h" |
5 | #include "perl.h" |
13 | #include "perl.h" |
6 | #include "XSUB.h" |
14 | #include "XSUB.h" |
7 | |
15 | |
8 | #include "autoconf/config.h" |
16 | #include "autoconf/config.h" |
9 | |
17 | |
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18 | #include <pthread.h> |
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19 | |
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20 | #include <stddef.h> |
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21 | #include <errno.h> |
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22 | #include <sys/time.h> |
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23 | #include <sys/select.h> |
10 | #include <sys/types.h> |
24 | #include <sys/types.h> |
11 | #include <sys/stat.h> |
25 | #include <sys/stat.h> |
12 | |
26 | #include <limits.h> |
13 | #include <unistd.h> |
27 | #include <unistd.h> |
14 | #include <fcntl.h> |
28 | #include <fcntl.h> |
15 | #include <signal.h> |
29 | #include <signal.h> |
16 | #include <sched.h> |
30 | #include <sched.h> |
17 | |
31 | |
18 | #include <pthread.h> |
32 | #if HAVE_SENDFILE |
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33 | # if __linux |
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34 | # include <sys/sendfile.h> |
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35 | # elif __freebsd |
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36 | # include <sys/socket.h> |
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37 | # include <sys/uio.h> |
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38 | # elif __hpux |
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39 | # include <sys/socket.h> |
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40 | # elif __solaris /* not yet */ |
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41 | # include <sys/sendfile.h> |
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42 | # else |
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43 | # error sendfile support requested but not available |
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44 | # endif |
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45 | #endif |
19 | |
46 | |
20 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
47 | /* used for struct dirent, AIX doesn't provide it */ |
21 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
48 | #ifndef NAME_MAX |
22 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
49 | # define NAME_MAX 4096 |
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50 | #endif |
23 | |
51 | |
24 | #if __ia64 |
52 | #if __ia64 |
25 | # define STACKSIZE 65536 |
53 | # define STACKSIZE 65536 |
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54 | #elif __i386 || __x86_64 /* 16k is unreasonably high :( */ |
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55 | # define STACKSIZE PTHREAD_STACK_MIN |
26 | #else |
56 | #else |
27 | # define STACKSIZE 4096 |
57 | # define STACKSIZE 16384 |
28 | #endif |
58 | #endif |
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59 | |
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60 | /* buffer size for various temporary buffers */ |
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61 | #define AIO_BUFSIZE 65536 |
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62 | |
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63 | #define dBUF \ |
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64 | char *aio_buf; \ |
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65 | LOCK (wrklock); \ |
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66 | self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ |
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67 | UNLOCK (wrklock); \ |
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68 | if (!aio_buf) \ |
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69 | return -1; |
29 | |
70 | |
30 | enum { |
71 | enum { |
31 | REQ_QUIT, |
72 | REQ_QUIT, |
32 | REQ_OPEN, REQ_CLOSE, |
73 | REQ_OPEN, REQ_CLOSE, |
33 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
74 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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75 | REQ_SENDFILE, |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
76 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
77 | REQ_FSYNC, REQ_FDATASYNC, |
36 | REQ_UNLINK, REQ_RMDIR, |
78 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
37 | REQ_SYMLINK, |
79 | REQ_READDIR, |
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80 | REQ_LINK, REQ_SYMLINK, |
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81 | REQ_GROUP, REQ_NOP, |
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82 | REQ_BUSY, |
38 | }; |
83 | }; |
39 | |
84 | |
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85 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
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86 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
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87 | |
40 | typedef struct aio_cb { |
88 | typedef struct aio_cb |
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89 | { |
41 | struct aio_cb *volatile next; |
90 | struct aio_cb *volatile next; |
42 | |
91 | |
43 | int type; |
92 | SV *data, *callback; |
44 | |
93 | SV *fh, *fh2; |
45 | int fd; |
94 | void *dataptr, *data2ptr; |
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95 | Stat_t *statdata; |
46 | off_t offset; |
96 | off_t offset; |
47 | size_t length; |
97 | size_t length; |
48 | ssize_t result; |
98 | ssize_t result; |
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99 | |
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100 | STRLEN dataoffset; |
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101 | int type; |
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102 | int fd, fd2; |
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103 | int errorno; |
49 | mode_t mode; /* open */ |
104 | mode_t mode; /* open */ |
50 | int errorno; |
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51 | SV *data, *callback, *fh; |
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52 | void *dataptr, *data2ptr; |
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53 | STRLEN dataoffset; |
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54 | |
105 | |
55 | Stat_t *statdata; |
106 | unsigned char flags; |
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107 | unsigned char pri; |
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108 | |
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109 | SV *self; /* the perl counterpart of this request, if any */ |
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110 | struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; |
56 | } aio_cb; |
111 | } aio_cb; |
57 | |
112 | |
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113 | enum { |
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114 | FLAG_CANCELLED = 0x01, |
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115 | }; |
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116 | |
58 | typedef aio_cb *aio_req; |
117 | typedef aio_cb *aio_req; |
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118 | typedef aio_cb *aio_req_ornot; |
59 | |
119 | |
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120 | enum { |
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121 | PRI_MIN = -4, |
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122 | PRI_MAX = 4, |
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123 | |
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124 | DEFAULT_PRI = 0, |
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125 | PRI_BIAS = -PRI_MIN, |
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126 | NUM_PRI = PRI_MAX + PRI_BIAS + 1, |
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127 | }; |
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128 | |
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129 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
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130 | |
60 | static int started; |
131 | static int started, wanted; |
61 | static volatile int nreqs; |
132 | static volatile int nreqs; |
62 | static int max_outstanding = 1<<30; |
133 | static int max_outstanding = 1<<30; |
63 | static int respipe [2]; |
134 | static int respipe [2]; |
64 | |
135 | |
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136 | #if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
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137 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
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138 | #else |
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139 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
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140 | #endif |
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141 | |
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142 | #define LOCK(mutex) pthread_mutex_lock (&(mutex)) |
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143 | #define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) |
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144 | |
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145 | /* worker threasd management */ |
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146 | static pthread_mutex_t wrklock = AIO_MUTEX_INIT; |
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147 | |
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148 | typedef struct worker { |
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149 | /* locked by wrklock */ |
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150 | struct worker *prev, *next; |
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151 | |
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152 | pthread_t tid; |
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153 | |
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154 | /* locked by reslock, reqlock or wrklock */ |
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155 | aio_req req; /* currently processed request */ |
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156 | void *dbuf; |
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157 | DIR *dirp; |
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158 | } worker; |
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159 | |
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160 | static worker wrk_first = { &wrk_first, &wrk_first, 0 }; |
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161 | |
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162 | static void worker_clear (worker *wrk) |
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163 | { |
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164 | if (wrk->dirp) |
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165 | { |
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166 | closedir (wrk->dirp); |
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167 | wrk->dirp = 0; |
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168 | } |
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169 | |
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170 | if (wrk->dbuf) |
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171 | { |
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172 | free (wrk->dbuf); |
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173 | wrk->dbuf = 0; |
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174 | } |
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175 | } |
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176 | |
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177 | static void worker_free (worker *wrk) |
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178 | { |
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179 | wrk->next->prev = wrk->prev; |
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180 | wrk->prev->next = wrk->next; |
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181 | |
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182 | free (wrk); |
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183 | } |
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184 | |
65 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
185 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
66 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
186 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
67 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
187 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
68 | |
188 | |
69 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
189 | /* |
70 | static volatile aio_req ress, rese; /* queue start, queue end */ |
190 | * a somewhat faster data structure might be nice, but |
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191 | * with 8 priorities this actually needs <20 insns |
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192 | * per shift, the most expensive operation. |
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193 | */ |
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194 | typedef struct { |
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195 | aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */ |
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196 | int size; |
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197 | } reqq; |
71 | |
198 | |
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199 | static reqq req_queue; |
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200 | static reqq res_queue; |
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201 | |
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202 | int reqq_push (reqq *q, aio_req req) |
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203 | { |
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204 | int pri = req->pri; |
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205 | req->next = 0; |
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206 | |
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207 | if (q->qe[pri]) |
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208 | { |
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209 | q->qe[pri]->next = req; |
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210 | q->qe[pri] = req; |
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211 | } |
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212 | else |
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213 | q->qe[pri] = q->qs[pri] = req; |
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214 | |
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215 | return q->size++; |
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216 | } |
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217 | |
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218 | aio_req reqq_shift (reqq *q) |
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219 | { |
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220 | int pri; |
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221 | |
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222 | if (!q->size) |
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223 | return 0; |
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224 | |
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225 | --q->size; |
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226 | |
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227 | for (pri = NUM_PRI; pri--; ) |
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228 | { |
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229 | aio_req req = q->qs[pri]; |
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230 | |
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231 | if (req) |
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232 | { |
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233 | if (!(q->qs[pri] = req->next)) |
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234 | q->qe[pri] = 0; |
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235 | |
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236 | return req; |
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237 | } |
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238 | } |
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239 | |
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240 | abort (); |
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241 | } |
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242 | |
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243 | static void req_invoke (aio_req req); |
72 | static void free_req (aio_req req) |
244 | static void req_free (aio_req req); |
73 | { |
245 | static void req_cancel (aio_req req); |
74 | if (req->data) |
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75 | SvREFCNT_dec (req->data); |
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76 | |
246 | |
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247 | /* must be called at most once */ |
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248 | static SV *req_sv (aio_req req, const char *klass) |
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249 | { |
77 | if (req->fh) |
250 | if (!req->self) |
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251 | { |
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252 | req->self = (SV *)newHV (); |
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253 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
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254 | } |
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255 | |
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256 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
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257 | } |
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258 | |
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259 | static aio_req SvAIO_REQ (SV *sv) |
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260 | { |
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261 | MAGIC *mg; |
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262 | |
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263 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
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264 | croak ("object of class " AIO_REQ_KLASS " expected"); |
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265 | |
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266 | mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
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267 | |
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268 | return mg ? (aio_req)mg->mg_ptr : 0; |
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269 | } |
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270 | |
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271 | static void aio_grp_feed (aio_req grp) |
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272 | { |
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273 | while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) |
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274 | { |
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275 | int old_len = grp->length; |
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276 | |
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277 | if (grp->fh2 && SvOK (grp->fh2)) |
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278 | { |
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279 | dSP; |
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280 | |
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281 | ENTER; |
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282 | SAVETMPS; |
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283 | PUSHMARK (SP); |
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284 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
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285 | PUTBACK; |
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286 | call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); |
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287 | SPAGAIN; |
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288 | FREETMPS; |
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289 | LEAVE; |
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290 | } |
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291 | |
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292 | /* stop if no progress has been made */ |
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293 | if (old_len == grp->length) |
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294 | { |
78 | SvREFCNT_dec (req->fh); |
295 | SvREFCNT_dec (grp->fh2); |
79 | |
296 | grp->fh2 = 0; |
80 | if (req->statdata) |
297 | break; |
81 | Safefree (req->statdata); |
298 | } |
82 | |
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83 | if (req->callback) |
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84 | SvREFCNT_dec (req->callback); |
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85 | |
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86 | Safefree (req); |
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87 | } |
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88 | |
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89 | static void |
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90 | poll_wait () |
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91 | { |
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92 | if (nreqs && !ress) |
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93 | { |
299 | } |
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300 | } |
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301 | |
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302 | static void aio_grp_dec (aio_req grp) |
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303 | { |
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304 | --grp->length; |
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305 | |
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306 | /* call feeder, if applicable */ |
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307 | aio_grp_feed (grp); |
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308 | |
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309 | /* finish, if done */ |
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310 | if (!grp->length && grp->fd) |
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311 | { |
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312 | req_invoke (grp); |
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313 | req_free (grp); |
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314 | } |
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315 | } |
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316 | |
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317 | static void poll_wait () |
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318 | { |
94 | fd_set rfd; |
319 | fd_set rfd; |
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320 | |
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321 | while (nreqs) |
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322 | { |
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323 | int size; |
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324 | #if !(__i386 || __x86_64) /* safe without sempahore on these archs */ |
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325 | LOCK (reslock); |
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326 | #endif |
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327 | size = res_queue.size; |
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328 | #if !(__i386 || __x86_64) /* safe without sempahore on these archs */ |
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329 | UNLOCK (reslock); |
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330 | #endif |
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331 | |
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332 | if (size) |
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333 | return; |
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334 | |
95 | FD_ZERO(&rfd); |
335 | FD_ZERO(&rfd); |
96 | FD_SET(respipe [0], &rfd); |
336 | FD_SET(respipe [0], &rfd); |
97 | |
337 | |
98 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
338 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
99 | } |
339 | } |
100 | } |
340 | } |
101 | |
341 | |
102 | static int |
342 | static void req_invoke (aio_req req) |
103 | poll_cb () |
343 | { |
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344 | dSP; |
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345 | |
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346 | if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
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347 | { |
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348 | errno = req->errorno; |
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349 | |
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350 | ENTER; |
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351 | SAVETMPS; |
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352 | PUSHMARK (SP); |
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353 | EXTEND (SP, 1); |
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354 | |
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355 | switch (req->type) |
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356 | { |
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357 | case REQ_READDIR: |
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358 | { |
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359 | SV *rv = &PL_sv_undef; |
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360 | |
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361 | if (req->result >= 0) |
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362 | { |
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363 | int i; |
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364 | char *buf = req->data2ptr; |
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365 | AV *av = newAV (); |
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366 | |
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367 | av_extend (av, req->result - 1); |
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368 | |
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369 | for (i = 0; i < req->result; ++i) |
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370 | { |
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371 | SV *sv = newSVpv (buf, 0); |
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372 | |
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373 | av_store (av, i, sv); |
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374 | buf += SvCUR (sv) + 1; |
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375 | } |
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376 | |
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377 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
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378 | } |
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379 | |
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380 | PUSHs (rv); |
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381 | } |
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382 | break; |
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383 | |
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384 | case REQ_OPEN: |
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385 | { |
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386 | /* convert fd to fh */ |
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387 | SV *fh; |
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388 | |
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389 | PUSHs (sv_2mortal (newSViv (req->result))); |
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390 | PUTBACK; |
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391 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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392 | SPAGAIN; |
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393 | |
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394 | fh = SvREFCNT_inc (POPs); |
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395 | |
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396 | PUSHMARK (SP); |
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397 | XPUSHs (sv_2mortal (fh)); |
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398 | } |
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399 | break; |
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400 | |
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401 | case REQ_GROUP: |
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402 | req->fd = 2; /* mark group as finished */ |
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403 | |
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404 | if (req->data) |
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405 | { |
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406 | int i; |
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407 | AV *av = (AV *)req->data; |
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408 | |
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409 | EXTEND (SP, AvFILL (av) + 1); |
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410 | for (i = 0; i <= AvFILL (av); ++i) |
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411 | PUSHs (*av_fetch (av, i, 0)); |
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412 | } |
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413 | break; |
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414 | |
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415 | case REQ_NOP: |
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416 | case REQ_BUSY: |
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417 | break; |
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418 | |
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419 | default: |
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420 | PUSHs (sv_2mortal (newSViv (req->result))); |
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421 | break; |
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422 | } |
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423 | |
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424 | |
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425 | PUTBACK; |
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426 | call_sv (req->callback, G_VOID | G_EVAL); |
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427 | SPAGAIN; |
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428 | |
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|
429 | FREETMPS; |
|
|
430 | LEAVE; |
|
|
431 | } |
|
|
432 | |
|
|
433 | if (req->grp) |
|
|
434 | { |
|
|
435 | aio_req grp = req->grp; |
|
|
436 | |
|
|
437 | /* unlink request */ |
|
|
438 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
|
|
439 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
|
|
440 | |
|
|
441 | if (grp->grp_first == req) |
|
|
442 | grp->grp_first = req->grp_next; |
|
|
443 | |
|
|
444 | aio_grp_dec (grp); |
|
|
445 | } |
|
|
446 | |
|
|
447 | if (SvTRUE (ERRSV)) |
|
|
448 | { |
|
|
449 | req_free (req); |
|
|
450 | croak (0); |
|
|
451 | } |
|
|
452 | } |
|
|
453 | |
|
|
454 | static void req_free (aio_req req) |
|
|
455 | { |
|
|
456 | if (req->self) |
|
|
457 | { |
|
|
458 | sv_unmagic (req->self, PERL_MAGIC_ext); |
|
|
459 | SvREFCNT_dec (req->self); |
|
|
460 | } |
|
|
461 | |
|
|
462 | SvREFCNT_dec (req->data); |
|
|
463 | SvREFCNT_dec (req->fh); |
|
|
464 | SvREFCNT_dec (req->fh2); |
|
|
465 | SvREFCNT_dec (req->callback); |
|
|
466 | Safefree (req->statdata); |
|
|
467 | |
|
|
468 | if (req->type == REQ_READDIR) |
|
|
469 | free (req->data2ptr); |
|
|
470 | |
|
|
471 | Safefree (req); |
|
|
472 | } |
|
|
473 | |
|
|
474 | static void req_cancel_subs (aio_req grp) |
|
|
475 | { |
|
|
476 | aio_req sub; |
|
|
477 | |
|
|
478 | if (grp->type != REQ_GROUP) |
|
|
479 | return; |
|
|
480 | |
|
|
481 | SvREFCNT_dec (grp->fh2); |
|
|
482 | grp->fh2 = 0; |
|
|
483 | |
|
|
484 | for (sub = grp->grp_first; sub; sub = sub->grp_next) |
|
|
485 | req_cancel (sub); |
|
|
486 | } |
|
|
487 | |
|
|
488 | static void req_cancel (aio_req req) |
|
|
489 | { |
|
|
490 | req->flags |= FLAG_CANCELLED; |
|
|
491 | |
|
|
492 | req_cancel_subs (req); |
|
|
493 | } |
|
|
494 | |
|
|
495 | static int poll_cb () |
104 | { |
496 | { |
105 | dSP; |
497 | dSP; |
106 | int count = 0; |
498 | int count = 0; |
107 | int do_croak = 0; |
499 | int do_croak = 0; |
108 | aio_req req; |
500 | aio_req req; |
109 | |
501 | |
110 | for (;;) |
502 | for (;;) |
111 | { |
503 | { |
112 | pthread_mutex_lock (&reslock); |
504 | LOCK (reslock); |
113 | req = ress; |
505 | req = reqq_shift (&res_queue); |
114 | |
506 | |
115 | if (req) |
507 | if (req) |
116 | { |
508 | { |
117 | ress = req->next; |
|
|
118 | |
|
|
119 | if (!ress) |
509 | if (!res_queue.size) |
120 | { |
510 | { |
121 | rese = 0; |
|
|
122 | |
|
|
123 | /* read any signals sent by the worker threads */ |
511 | /* read any signals sent by the worker threads */ |
124 | char buf [32]; |
512 | char buf [32]; |
125 | while (read (respipe [0], buf, 32) == 32) |
513 | while (read (respipe [0], buf, 32) == 32) |
126 | ; |
514 | ; |
127 | } |
515 | } |
128 | } |
516 | } |
129 | |
517 | |
130 | pthread_mutex_unlock (&reslock); |
518 | UNLOCK (reslock); |
131 | |
519 | |
132 | if (!req) |
520 | if (!req) |
133 | break; |
521 | break; |
134 | |
522 | |
135 | nreqs--; |
523 | --nreqs; |
136 | |
524 | |
137 | if (req->type == REQ_QUIT) |
525 | if (req->type == REQ_QUIT) |
138 | started--; |
526 | started--; |
|
|
527 | else if (req->type == REQ_GROUP && req->length) |
|
|
528 | { |
|
|
529 | req->fd = 1; /* mark request as delayed */ |
|
|
530 | continue; |
|
|
531 | } |
139 | else |
532 | else |
140 | { |
533 | { |
141 | int errorno = errno; |
|
|
142 | errno = req->errorno; |
|
|
143 | |
|
|
144 | if (req->type == REQ_READ) |
534 | if (req->type == REQ_READ) |
145 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
535 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
146 | |
536 | |
147 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
537 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
148 | SvREADONLY_off (req->data); |
538 | SvREADONLY_off (req->data); |
… | |
… | |
152 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
542 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
153 | PL_laststatval = req->result; |
543 | PL_laststatval = req->result; |
154 | PL_statcache = *(req->statdata); |
544 | PL_statcache = *(req->statdata); |
155 | } |
545 | } |
156 | |
546 | |
157 | ENTER; |
547 | req_invoke (req); |
158 | PUSHMARK (SP); |
|
|
159 | XPUSHs (sv_2mortal (newSViv (req->result))); |
|
|
160 | |
548 | |
161 | if (req->type == REQ_OPEN) |
|
|
162 | { |
|
|
163 | /* convert fd to fh */ |
|
|
164 | SV *fh; |
|
|
165 | |
|
|
166 | PUTBACK; |
|
|
167 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
|
|
168 | SPAGAIN; |
|
|
169 | |
|
|
170 | fh = SvREFCNT_inc (POPs); |
|
|
171 | |
|
|
172 | PUSHMARK (SP); |
|
|
173 | XPUSHs (sv_2mortal (fh)); |
|
|
174 | } |
|
|
175 | |
|
|
176 | if (SvOK (req->callback)) |
|
|
177 | { |
|
|
178 | PUTBACK; |
|
|
179 | call_sv (req->callback, G_VOID | G_EVAL); |
|
|
180 | SPAGAIN; |
|
|
181 | |
|
|
182 | if (SvTRUE (ERRSV)) |
|
|
183 | { |
|
|
184 | free_req (req); |
|
|
185 | croak (0); |
|
|
186 | } |
|
|
187 | } |
|
|
188 | |
|
|
189 | LEAVE; |
|
|
190 | |
|
|
191 | errno = errorno; |
|
|
192 | count++; |
549 | count++; |
193 | } |
550 | } |
194 | |
551 | |
195 | free_req (req); |
552 | req_free (req); |
196 | } |
553 | } |
197 | |
554 | |
198 | return count; |
555 | return count; |
199 | } |
556 | } |
200 | |
557 | |
201 | static void *aio_proc(void *arg); |
558 | static void *aio_proc(void *arg); |
202 | |
559 | |
203 | static void |
|
|
204 | start_thread (void) |
560 | static void start_thread (void) |
205 | { |
561 | { |
206 | sigset_t fullsigset, oldsigset; |
562 | sigset_t fullsigset, oldsigset; |
207 | pthread_t tid; |
|
|
208 | pthread_attr_t attr; |
563 | pthread_attr_t attr; |
|
|
564 | |
|
|
565 | worker *wrk = calloc (1, sizeof (worker)); |
|
|
566 | |
|
|
567 | if (!wrk) |
|
|
568 | croak ("unable to allocate worker thread data"); |
209 | |
569 | |
210 | pthread_attr_init (&attr); |
570 | pthread_attr_init (&attr); |
211 | pthread_attr_setstacksize (&attr, STACKSIZE); |
571 | pthread_attr_setstacksize (&attr, STACKSIZE); |
212 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
572 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
213 | |
573 | |
214 | sigfillset (&fullsigset); |
574 | sigfillset (&fullsigset); |
|
|
575 | |
|
|
576 | LOCK (wrklock); |
215 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
577 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
216 | |
578 | |
217 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
579 | if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0) |
|
|
580 | { |
|
|
581 | wrk->prev = &wrk_first; |
|
|
582 | wrk->next = wrk_first.next; |
|
|
583 | wrk_first.next->prev = wrk; |
|
|
584 | wrk_first.next = wrk; |
218 | started++; |
585 | started++; |
|
|
586 | } |
|
|
587 | else |
|
|
588 | free (wrk); |
219 | |
589 | |
220 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
590 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
|
|
591 | UNLOCK (wrklock); |
221 | } |
592 | } |
222 | |
593 | |
223 | static void |
594 | static void req_send (aio_req req) |
224 | send_req (aio_req req) |
|
|
225 | { |
595 | { |
|
|
596 | while (started < wanted && nreqs >= started) |
|
|
597 | start_thread (); |
|
|
598 | |
226 | nreqs++; |
599 | ++nreqs; |
227 | |
600 | |
228 | pthread_mutex_lock (&reqlock); |
601 | LOCK (reqlock); |
229 | |
602 | reqq_push (&req_queue, req); |
230 | req->next = 0; |
|
|
231 | |
|
|
232 | if (reqe) |
|
|
233 | { |
|
|
234 | reqe->next = req; |
|
|
235 | reqe = req; |
|
|
236 | } |
|
|
237 | else |
|
|
238 | reqe = reqs = req; |
|
|
239 | |
|
|
240 | pthread_cond_signal (&reqwait); |
603 | pthread_cond_signal (&reqwait); |
241 | pthread_mutex_unlock (&reqlock); |
604 | UNLOCK (reqlock); |
242 | |
605 | |
243 | if (nreqs > max_outstanding) |
606 | if (nreqs > max_outstanding) |
244 | for (;;) |
607 | for (;;) |
245 | { |
608 | { |
246 | poll_cb (); |
609 | poll_cb (); |
… | |
… | |
250 | |
613 | |
251 | poll_wait (); |
614 | poll_wait (); |
252 | } |
615 | } |
253 | } |
616 | } |
254 | |
617 | |
255 | static void |
618 | static void end_thread (void) |
256 | end_thread (void) |
|
|
257 | { |
619 | { |
258 | aio_req req; |
620 | aio_req req; |
|
|
621 | |
259 | Newz (0, req, 1, aio_cb); |
622 | Newz (0, req, 1, aio_cb); |
|
|
623 | |
260 | req->type = REQ_QUIT; |
624 | req->type = REQ_QUIT; |
|
|
625 | req->pri = PRI_MAX + PRI_BIAS; |
261 | |
626 | |
262 | send_req (req); |
627 | req_send (req); |
263 | } |
628 | } |
264 | |
629 | |
265 | static void min_parallel (int nthreads) |
630 | static void min_parallel (int nthreads) |
266 | { |
631 | { |
267 | while (nthreads > started) |
632 | if (wanted < nthreads) |
268 | start_thread (); |
633 | wanted = nthreads; |
269 | } |
634 | } |
270 | |
635 | |
271 | static void max_parallel (int nthreads) |
636 | static void max_parallel (int nthreads) |
272 | { |
637 | { |
273 | int cur = started; |
638 | int cur = started; |
274 | |
639 | |
|
|
640 | if (wanted > nthreads) |
|
|
641 | wanted = nthreads; |
|
|
642 | |
275 | while (cur > nthreads) |
643 | while (cur > wanted) |
276 | { |
644 | { |
277 | end_thread (); |
645 | end_thread (); |
278 | cur--; |
646 | cur--; |
279 | } |
647 | } |
280 | |
648 | |
281 | while (started > nthreads) |
649 | while (started > wanted) |
282 | { |
650 | { |
283 | poll_wait (); |
651 | poll_wait (); |
284 | poll_cb (); |
652 | poll_cb (); |
285 | } |
653 | } |
286 | } |
654 | } |
… | |
… | |
293 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
661 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
294 | croak ("cannot set result pipe to nonblocking mode"); |
662 | croak ("cannot set result pipe to nonblocking mode"); |
295 | |
663 | |
296 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
664 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
297 | croak ("cannot set result pipe to nonblocking mode"); |
665 | croak ("cannot set result pipe to nonblocking mode"); |
298 | } |
|
|
299 | |
|
|
300 | static void atfork_prepare (void) |
|
|
301 | { |
|
|
302 | pthread_mutex_lock (&reqlock); |
|
|
303 | pthread_mutex_lock (&reslock); |
|
|
304 | } |
|
|
305 | |
|
|
306 | static void atfork_parent (void) |
|
|
307 | { |
|
|
308 | pthread_mutex_unlock (&reslock); |
|
|
309 | pthread_mutex_unlock (&reqlock); |
|
|
310 | } |
|
|
311 | |
|
|
312 | static void atfork_child (void) |
|
|
313 | { |
|
|
314 | aio_req prv; |
|
|
315 | |
|
|
316 | int restart = started; |
|
|
317 | started = 0; |
|
|
318 | |
|
|
319 | while (reqs) |
|
|
320 | { |
|
|
321 | prv = reqs; |
|
|
322 | reqs = prv->next; |
|
|
323 | free_req (prv); |
|
|
324 | } |
|
|
325 | |
|
|
326 | reqs = reqe = 0; |
|
|
327 | |
|
|
328 | while (ress) |
|
|
329 | { |
|
|
330 | prv = ress; |
|
|
331 | ress = prv->next; |
|
|
332 | free_req (prv); |
|
|
333 | } |
|
|
334 | |
|
|
335 | ress = rese = 0; |
|
|
336 | |
|
|
337 | atfork_parent (); |
|
|
338 | |
|
|
339 | min_parallel (restart); |
|
|
340 | } |
666 | } |
341 | |
667 | |
342 | /*****************************************************************************/ |
668 | /*****************************************************************************/ |
343 | /* work around various missing functions */ |
669 | /* work around various missing functions */ |
344 | |
670 | |
… | |
… | |
349 | /* |
675 | /* |
350 | * make our pread/pwrite safe against themselves, but not against |
676 | * make our pread/pwrite safe against themselves, but not against |
351 | * normal read/write by using a mutex. slows down execution a lot, |
677 | * normal read/write by using a mutex. slows down execution a lot, |
352 | * but that's your problem, not mine. |
678 | * but that's your problem, not mine. |
353 | */ |
679 | */ |
354 | static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; |
680 | static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
355 | |
681 | |
356 | static ssize_t |
682 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
357 | pread (int fd, void *buf, size_t count, off_t offset) |
|
|
358 | { |
683 | { |
359 | ssize_t res; |
684 | ssize_t res; |
360 | off_t ooffset; |
685 | off_t ooffset; |
361 | |
686 | |
362 | pthread_mutex_lock (&iolock); |
687 | LOCK (preadwritelock); |
363 | ooffset = lseek (fd, 0, SEEK_CUR); |
688 | ooffset = lseek (fd, 0, SEEK_CUR); |
364 | lseek (fd, offset, SEEK_SET); |
689 | lseek (fd, offset, SEEK_SET); |
365 | res = read (fd, buf, count); |
690 | res = read (fd, buf, count); |
366 | lseek (fd, ooffset, SEEK_SET); |
691 | lseek (fd, ooffset, SEEK_SET); |
367 | pthread_mutex_unlock (&iolock); |
692 | UNLOCK (preadwritelock); |
368 | |
693 | |
369 | return res; |
694 | return res; |
370 | } |
695 | } |
371 | |
696 | |
372 | static ssize_t |
|
|
373 | pwrite (int fd, void *buf, size_t count, off_t offset) |
697 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
374 | { |
698 | { |
375 | ssize_t res; |
699 | ssize_t res; |
376 | off_t ooffset; |
700 | off_t ooffset; |
377 | |
701 | |
378 | pthread_mutex_lock (&iolock); |
702 | LOCK (preadwritelock); |
379 | ooffset = lseek (fd, 0, SEEK_CUR); |
703 | ooffset = lseek (fd, 0, SEEK_CUR); |
380 | lseek (fd, offset, SEEK_SET); |
704 | lseek (fd, offset, SEEK_SET); |
381 | res = write (fd, buf, count); |
705 | res = write (fd, buf, count); |
382 | lseek (fd, offset, SEEK_SET); |
706 | lseek (fd, offset, SEEK_SET); |
383 | pthread_mutex_unlock (&iolock); |
707 | UNLOCK (preadwritelock); |
384 | |
708 | |
385 | return res; |
709 | return res; |
386 | } |
710 | } |
387 | #endif |
711 | #endif |
388 | |
712 | |
… | |
… | |
391 | #endif |
715 | #endif |
392 | |
716 | |
393 | #if !HAVE_READAHEAD |
717 | #if !HAVE_READAHEAD |
394 | # define readahead aio_readahead |
718 | # define readahead aio_readahead |
395 | |
719 | |
396 | static char readahead_buf[4096]; |
|
|
397 | |
|
|
398 | static ssize_t |
|
|
399 | readahead (int fd, off_t offset, size_t count) |
720 | static ssize_t readahead (int fd, off_t offset, size_t count) |
400 | { |
721 | { |
|
|
722 | dBUF; |
|
|
723 | |
401 | while (count > 0) |
724 | while (count > 0) |
402 | { |
725 | { |
403 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
726 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
404 | |
727 | |
405 | pread (fd, readahead_buf, len, offset); |
728 | pread (fd, aio_buf, len, offset); |
406 | offset += len; |
729 | offset += len; |
407 | count -= len; |
730 | count -= len; |
408 | } |
731 | } |
409 | |
732 | |
410 | errno = 0; |
733 | errno = 0; |
411 | } |
734 | } |
412 | #endif |
735 | #endif |
413 | |
736 | |
|
|
737 | #if !HAVE_READDIR_R |
|
|
738 | # define readdir_r aio_readdir_r |
|
|
739 | |
|
|
740 | static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
|
|
741 | |
|
|
742 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
|
|
743 | { |
|
|
744 | struct dirent *e; |
|
|
745 | int errorno; |
|
|
746 | |
|
|
747 | LOCK (readdirlock); |
|
|
748 | |
|
|
749 | e = readdir (dirp); |
|
|
750 | errorno = errno; |
|
|
751 | |
|
|
752 | if (e) |
|
|
753 | { |
|
|
754 | *res = ent; |
|
|
755 | strcpy (ent->d_name, e->d_name); |
|
|
756 | } |
|
|
757 | else |
|
|
758 | *res = 0; |
|
|
759 | |
|
|
760 | UNLOCK (readdirlock); |
|
|
761 | |
|
|
762 | errno = errorno; |
|
|
763 | return e ? 0 : -1; |
|
|
764 | } |
|
|
765 | #endif |
|
|
766 | |
|
|
767 | /* sendfile always needs emulation */ |
|
|
768 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) |
|
|
769 | { |
|
|
770 | ssize_t res; |
|
|
771 | |
|
|
772 | if (!count) |
|
|
773 | return 0; |
|
|
774 | |
|
|
775 | #if HAVE_SENDFILE |
|
|
776 | # if __linux |
|
|
777 | res = sendfile (ofd, ifd, &offset, count); |
|
|
778 | |
|
|
779 | # elif __freebsd |
|
|
780 | /* |
|
|
781 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
|
|
782 | * wasted on making it similar to other I/O functions. |
|
|
783 | */ |
|
|
784 | { |
|
|
785 | off_t sbytes; |
|
|
786 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
|
|
787 | |
|
|
788 | if (res < 0 && sbytes) |
|
|
789 | /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ |
|
|
790 | res = sbytes; |
|
|
791 | } |
|
|
792 | |
|
|
793 | # elif __hpux |
|
|
794 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
|
|
795 | |
|
|
796 | # elif __solaris |
|
|
797 | { |
|
|
798 | struct sendfilevec vec; |
|
|
799 | size_t sbytes; |
|
|
800 | |
|
|
801 | vec.sfv_fd = ifd; |
|
|
802 | vec.sfv_flag = 0; |
|
|
803 | vec.sfv_off = offset; |
|
|
804 | vec.sfv_len = count; |
|
|
805 | |
|
|
806 | res = sendfilev (ofd, &vec, 1, &sbytes); |
|
|
807 | |
|
|
808 | if (res < 0 && sbytes) |
|
|
809 | res = sbytes; |
|
|
810 | } |
|
|
811 | |
|
|
812 | # endif |
|
|
813 | #else |
|
|
814 | res = -1; |
|
|
815 | errno = ENOSYS; |
|
|
816 | #endif |
|
|
817 | |
|
|
818 | if (res < 0 |
|
|
819 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
820 | #if __solaris |
|
|
821 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
|
|
822 | #endif |
|
|
823 | ) |
|
|
824 | ) |
|
|
825 | { |
|
|
826 | /* emulate sendfile. this is a major pain in the ass */ |
|
|
827 | dBUF; |
|
|
828 | |
|
|
829 | res = 0; |
|
|
830 | |
|
|
831 | while (count) |
|
|
832 | { |
|
|
833 | ssize_t cnt; |
|
|
834 | |
|
|
835 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
|
|
836 | |
|
|
837 | if (cnt <= 0) |
|
|
838 | { |
|
|
839 | if (cnt && !res) res = -1; |
|
|
840 | break; |
|
|
841 | } |
|
|
842 | |
|
|
843 | cnt = write (ofd, aio_buf, cnt); |
|
|
844 | |
|
|
845 | if (cnt <= 0) |
|
|
846 | { |
|
|
847 | if (cnt && !res) res = -1; |
|
|
848 | break; |
|
|
849 | } |
|
|
850 | |
|
|
851 | offset += cnt; |
|
|
852 | res += cnt; |
|
|
853 | count -= cnt; |
|
|
854 | } |
|
|
855 | } |
|
|
856 | |
|
|
857 | return res; |
|
|
858 | } |
|
|
859 | |
|
|
860 | /* read a full directory */ |
|
|
861 | static void scandir_ (aio_req req, worker *self) |
|
|
862 | { |
|
|
863 | DIR *dirp; |
|
|
864 | union |
|
|
865 | { |
|
|
866 | struct dirent d; |
|
|
867 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
|
|
868 | } *u; |
|
|
869 | struct dirent *entp; |
|
|
870 | char *name, *names; |
|
|
871 | int memlen = 4096; |
|
|
872 | int memofs = 0; |
|
|
873 | int res = 0; |
|
|
874 | int errorno; |
|
|
875 | |
|
|
876 | LOCK (wrklock); |
|
|
877 | self->dirp = dirp = opendir (req->dataptr); |
|
|
878 | self->dbuf = u = malloc (sizeof (*u)); |
|
|
879 | UNLOCK (wrklock); |
|
|
880 | |
|
|
881 | req->data2ptr = names = malloc (memlen); |
|
|
882 | |
|
|
883 | if (dirp && u && names) |
|
|
884 | for (;;) |
|
|
885 | { |
|
|
886 | errno = 0; |
|
|
887 | readdir_r (dirp, &u->d, &entp); |
|
|
888 | |
|
|
889 | if (!entp) |
|
|
890 | break; |
|
|
891 | |
|
|
892 | name = entp->d_name; |
|
|
893 | |
|
|
894 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
|
|
895 | { |
|
|
896 | int len = strlen (name) + 1; |
|
|
897 | |
|
|
898 | res++; |
|
|
899 | |
|
|
900 | while (memofs + len > memlen) |
|
|
901 | { |
|
|
902 | memlen *= 2; |
|
|
903 | LOCK (wrklock); |
|
|
904 | req->data2ptr = names = realloc (names, memlen); |
|
|
905 | UNLOCK (wrklock); |
|
|
906 | |
|
|
907 | if (!names) |
|
|
908 | break; |
|
|
909 | } |
|
|
910 | |
|
|
911 | memcpy (names + memofs, name, len); |
|
|
912 | memofs += len; |
|
|
913 | } |
|
|
914 | } |
|
|
915 | |
|
|
916 | if (errno) |
|
|
917 | res = -1; |
|
|
918 | |
|
|
919 | req->result = res; |
|
|
920 | } |
|
|
921 | |
414 | /*****************************************************************************/ |
922 | /*****************************************************************************/ |
415 | |
923 | |
416 | static void * |
|
|
417 | aio_proc (void *thr_arg) |
924 | static void *aio_proc (void *thr_arg) |
418 | { |
925 | { |
419 | aio_req req; |
926 | aio_req req; |
420 | int type; |
927 | int type; |
|
|
928 | worker *self = (worker *)thr_arg; |
421 | |
929 | |
422 | do |
930 | do |
423 | { |
931 | { |
424 | pthread_mutex_lock (&reqlock); |
932 | LOCK (reqlock); |
425 | |
933 | |
426 | for (;;) |
934 | for (;;) |
427 | { |
935 | { |
428 | req = reqs; |
936 | self->req = req = reqq_shift (&req_queue); |
429 | |
|
|
430 | if (reqs) |
|
|
431 | { |
|
|
432 | reqs = reqs->next; |
|
|
433 | if (!reqs) reqe = 0; |
|
|
434 | } |
|
|
435 | |
937 | |
436 | if (req) |
938 | if (req) |
437 | break; |
939 | break; |
438 | |
940 | |
439 | pthread_cond_wait (&reqwait, &reqlock); |
941 | pthread_cond_wait (&reqwait, &reqlock); |
440 | } |
942 | } |
441 | |
943 | |
442 | pthread_mutex_unlock (&reqlock); |
944 | UNLOCK (reqlock); |
443 | |
945 | |
444 | errno = 0; /* strictly unnecessary */ |
946 | errno = 0; /* strictly unnecessary */ |
|
|
947 | type = req->type; /* remember type for QUIT check */ |
445 | |
948 | |
446 | type = req->type; |
949 | if (!(req->flags & FLAG_CANCELLED)) |
447 | |
|
|
448 | switch (type) |
950 | switch (type) |
449 | { |
951 | { |
450 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
952 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
451 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
953 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
452 | |
954 | |
453 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
955 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
|
|
956 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break; |
454 | |
957 | |
455 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
958 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
456 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
959 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
457 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
960 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
458 | |
961 | |
459 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
962 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
460 | case REQ_CLOSE: req->result = close (req->fd); break; |
963 | case REQ_CLOSE: req->result = close (req->fd); break; |
461 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
964 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
462 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
965 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
|
|
966 | case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; |
|
|
967 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
463 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
968 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
464 | |
969 | |
465 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
970 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
466 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
971 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
|
|
972 | case REQ_READDIR: scandir_ (req, self); break; |
467 | |
973 | |
|
|
974 | case REQ_BUSY: |
|
|
975 | { |
|
|
976 | struct timeval tv; |
|
|
977 | |
|
|
978 | tv.tv_sec = req->fd; |
|
|
979 | tv.tv_usec = req->fd2; |
|
|
980 | |
|
|
981 | req->result = select (0, 0, 0, 0, &tv); |
|
|
982 | } |
|
|
983 | |
|
|
984 | case REQ_GROUP: |
|
|
985 | case REQ_NOP: |
468 | case REQ_QUIT: |
986 | case REQ_QUIT: |
469 | break; |
987 | break; |
470 | |
988 | |
471 | default: |
989 | default: |
472 | req->result = ENOSYS; |
990 | req->result = ENOSYS; |
473 | break; |
991 | break; |
474 | } |
992 | } |
475 | |
993 | |
476 | req->errorno = errno; |
994 | req->errorno = errno; |
477 | |
995 | |
478 | pthread_mutex_lock (&reslock); |
996 | LOCK (reslock); |
479 | |
997 | |
480 | req->next = 0; |
998 | if (!reqq_push (&res_queue, req)) |
481 | |
|
|
482 | if (rese) |
|
|
483 | { |
|
|
484 | rese->next = req; |
|
|
485 | rese = req; |
|
|
486 | } |
|
|
487 | else |
|
|
488 | { |
|
|
489 | rese = ress = req; |
|
|
490 | |
|
|
491 | /* write a dummy byte to the pipe so fh becomes ready */ |
999 | /* write a dummy byte to the pipe so fh becomes ready */ |
492 | write (respipe [1], &respipe, 1); |
1000 | write (respipe [1], &respipe, 1); |
493 | } |
|
|
494 | |
1001 | |
495 | pthread_mutex_unlock (&reslock); |
1002 | self->req = 0; |
|
|
1003 | worker_clear (self); |
|
|
1004 | |
|
|
1005 | UNLOCK (reslock); |
496 | } |
1006 | } |
497 | while (type != REQ_QUIT); |
1007 | while (type != REQ_QUIT); |
498 | |
1008 | |
|
|
1009 | LOCK (wrklock); |
|
|
1010 | worker_free (self); |
|
|
1011 | UNLOCK (wrklock); |
|
|
1012 | |
499 | return 0; |
1013 | return 0; |
|
|
1014 | } |
|
|
1015 | |
|
|
1016 | /*****************************************************************************/ |
|
|
1017 | |
|
|
1018 | static void atfork_prepare (void) |
|
|
1019 | { |
|
|
1020 | LOCK (wrklock); |
|
|
1021 | LOCK (reqlock); |
|
|
1022 | LOCK (reslock); |
|
|
1023 | #if !HAVE_PREADWRITE |
|
|
1024 | LOCK (preadwritelock); |
|
|
1025 | #endif |
|
|
1026 | #if !HAVE_READDIR_R |
|
|
1027 | LOCK (readdirlock); |
|
|
1028 | #endif |
|
|
1029 | } |
|
|
1030 | |
|
|
1031 | static void atfork_parent (void) |
|
|
1032 | { |
|
|
1033 | #if !HAVE_READDIR_R |
|
|
1034 | UNLOCK (readdirlock); |
|
|
1035 | #endif |
|
|
1036 | #if !HAVE_PREADWRITE |
|
|
1037 | UNLOCK (preadwritelock); |
|
|
1038 | #endif |
|
|
1039 | UNLOCK (reslock); |
|
|
1040 | UNLOCK (reqlock); |
|
|
1041 | UNLOCK (wrklock); |
|
|
1042 | } |
|
|
1043 | |
|
|
1044 | static void atfork_child (void) |
|
|
1045 | { |
|
|
1046 | aio_req prv; |
|
|
1047 | |
|
|
1048 | while (prv = reqq_shift (&req_queue)) |
|
|
1049 | req_free (prv); |
|
|
1050 | |
|
|
1051 | while (prv = reqq_shift (&res_queue)) |
|
|
1052 | req_free (prv); |
|
|
1053 | |
|
|
1054 | while (wrk_first.next != &wrk_first) |
|
|
1055 | { |
|
|
1056 | worker *wrk = wrk_first.next; |
|
|
1057 | |
|
|
1058 | if (wrk->req) |
|
|
1059 | req_free (wrk->req); |
|
|
1060 | |
|
|
1061 | worker_clear (wrk); |
|
|
1062 | worker_free (wrk); |
|
|
1063 | } |
|
|
1064 | |
|
|
1065 | started = 0; |
|
|
1066 | nreqs = 0; |
|
|
1067 | |
|
|
1068 | close (respipe [0]); |
|
|
1069 | close (respipe [1]); |
|
|
1070 | create_pipe (); |
|
|
1071 | |
|
|
1072 | atfork_parent (); |
500 | } |
1073 | } |
501 | |
1074 | |
502 | #define dREQ \ |
1075 | #define dREQ \ |
503 | aio_req req; \ |
1076 | aio_req req; \ |
|
|
1077 | int req_pri = next_pri; \ |
|
|
1078 | next_pri = DEFAULT_PRI + PRI_BIAS; \ |
504 | \ |
1079 | \ |
505 | if (SvOK (callback) && !SvROK (callback)) \ |
1080 | if (SvOK (callback) && !SvROK (callback)) \ |
506 | croak ("clalback must be undef or of reference type"); \ |
1081 | croak ("callback must be undef or of reference type"); \ |
507 | \ |
1082 | \ |
508 | Newz (0, req, 1, aio_cb); \ |
1083 | Newz (0, req, 1, aio_cb); \ |
509 | if (!req) \ |
1084 | if (!req) \ |
510 | croak ("out of memory during aio_req allocation"); \ |
1085 | croak ("out of memory during aio_req allocation"); \ |
511 | \ |
1086 | \ |
512 | req->callback = newSVsv (callback); |
1087 | req->callback = newSVsv (callback); \ |
|
|
1088 | req->pri = req_pri |
|
|
1089 | |
|
|
1090 | #define REQ_SEND \ |
|
|
1091 | req_send (req); \ |
|
|
1092 | \ |
|
|
1093 | if (GIMME_V != G_VOID) \ |
|
|
1094 | XPUSHs (req_sv (req, AIO_REQ_KLASS)); |
513 | |
1095 | |
514 | MODULE = IO::AIO PACKAGE = IO::AIO |
1096 | MODULE = IO::AIO PACKAGE = IO::AIO |
515 | |
1097 | |
516 | PROTOTYPES: ENABLE |
1098 | PROTOTYPES: ENABLE |
517 | |
1099 | |
518 | BOOT: |
1100 | BOOT: |
519 | { |
1101 | { |
|
|
1102 | HV *stash = gv_stashpv ("IO::AIO", 1); |
|
|
1103 | newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); |
|
|
1104 | newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); |
|
|
1105 | newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); |
|
|
1106 | |
520 | create_pipe (); |
1107 | create_pipe (); |
521 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
1108 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
522 | } |
1109 | } |
523 | |
1110 | |
524 | void |
1111 | void |
525 | min_parallel(nthreads) |
1112 | min_parallel (nthreads) |
526 | int nthreads |
1113 | int nthreads |
527 | PROTOTYPE: $ |
1114 | PROTOTYPE: $ |
528 | |
1115 | |
529 | void |
1116 | void |
530 | max_parallel(nthreads) |
1117 | max_parallel (nthreads) |
531 | int nthreads |
1118 | int nthreads |
532 | PROTOTYPE: $ |
1119 | PROTOTYPE: $ |
533 | |
1120 | |
534 | int |
1121 | int |
535 | max_outstanding(nreqs) |
1122 | max_outstanding (nreqs) |
536 | int nreqs |
1123 | int nreqs |
537 | PROTOTYPE: $ |
1124 | PROTOTYPE: $ |
538 | CODE: |
1125 | CODE: |
539 | RETVAL = max_outstanding; |
1126 | RETVAL = max_outstanding; |
540 | max_outstanding = nreqs; |
1127 | max_outstanding = nreqs; |
541 | |
1128 | |
542 | void |
1129 | void |
543 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
1130 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
544 | SV * pathname |
1131 | SV * pathname |
545 | int flags |
1132 | int flags |
546 | int mode |
1133 | int mode |
547 | SV * callback |
1134 | SV * callback |
548 | PROTOTYPE: $$$;$ |
1135 | PROTOTYPE: $$$;$ |
549 | CODE: |
1136 | PPCODE: |
550 | { |
1137 | { |
551 | dREQ; |
1138 | dREQ; |
552 | |
1139 | |
553 | req->type = REQ_OPEN; |
1140 | req->type = REQ_OPEN; |
554 | req->data = newSVsv (pathname); |
1141 | req->data = newSVsv (pathname); |
555 | req->dataptr = SvPVbyte_nolen (req->data); |
1142 | req->dataptr = SvPVbyte_nolen (req->data); |
556 | req->fd = flags; |
1143 | req->fd = flags; |
557 | req->mode = mode; |
1144 | req->mode = mode; |
558 | |
1145 | |
559 | send_req (req); |
1146 | REQ_SEND; |
560 | } |
1147 | } |
561 | |
1148 | |
562 | void |
1149 | void |
563 | aio_close(fh,callback=&PL_sv_undef) |
1150 | aio_close (fh,callback=&PL_sv_undef) |
564 | SV * fh |
1151 | SV * fh |
565 | SV * callback |
1152 | SV * callback |
566 | PROTOTYPE: $;$ |
1153 | PROTOTYPE: $;$ |
567 | ALIAS: |
1154 | ALIAS: |
568 | aio_close = REQ_CLOSE |
1155 | aio_close = REQ_CLOSE |
569 | aio_fsync = REQ_FSYNC |
1156 | aio_fsync = REQ_FSYNC |
570 | aio_fdatasync = REQ_FDATASYNC |
1157 | aio_fdatasync = REQ_FDATASYNC |
571 | CODE: |
1158 | PPCODE: |
572 | { |
1159 | { |
573 | dREQ; |
1160 | dREQ; |
574 | |
1161 | |
575 | req->type = ix; |
1162 | req->type = ix; |
576 | req->fh = newSVsv (fh); |
1163 | req->fh = newSVsv (fh); |
577 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
1164 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
578 | |
1165 | |
579 | send_req (req); |
1166 | REQ_SEND (req); |
580 | } |
1167 | } |
581 | |
1168 | |
582 | void |
1169 | void |
583 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
1170 | aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
584 | SV * fh |
1171 | SV * fh |
585 | UV offset |
1172 | UV offset |
586 | IV length |
1173 | UV length |
587 | SV * data |
1174 | SV * data |
588 | IV dataoffset |
1175 | UV dataoffset |
589 | SV * callback |
1176 | SV * callback |
590 | ALIAS: |
1177 | ALIAS: |
591 | aio_read = REQ_READ |
1178 | aio_read = REQ_READ |
592 | aio_write = REQ_WRITE |
1179 | aio_write = REQ_WRITE |
593 | PROTOTYPE: $$$$$;$ |
1180 | PROTOTYPE: $$$$$;$ |
594 | CODE: |
1181 | PPCODE: |
595 | { |
1182 | { |
596 | aio_req req; |
1183 | aio_req req; |
597 | STRLEN svlen; |
1184 | STRLEN svlen; |
598 | char *svptr = SvPVbyte (data, svlen); |
1185 | char *svptr = SvPVbyte (data, svlen); |
599 | |
1186 | |
… | |
… | |
637 | { |
1224 | { |
638 | SvREADONLY_on (data); |
1225 | SvREADONLY_on (data); |
639 | req->data2ptr = (void *)data; |
1226 | req->data2ptr = (void *)data; |
640 | } |
1227 | } |
641 | |
1228 | |
642 | send_req (req); |
1229 | REQ_SEND; |
643 | } |
1230 | } |
644 | } |
1231 | } |
645 | |
1232 | |
646 | void |
1233 | void |
|
|
1234 | aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) |
|
|
1235 | SV * out_fh |
|
|
1236 | SV * in_fh |
|
|
1237 | UV in_offset |
|
|
1238 | UV length |
|
|
1239 | SV * callback |
|
|
1240 | PROTOTYPE: $$$$;$ |
|
|
1241 | PPCODE: |
|
|
1242 | { |
|
|
1243 | dREQ; |
|
|
1244 | |
|
|
1245 | req->type = REQ_SENDFILE; |
|
|
1246 | req->fh = newSVsv (out_fh); |
|
|
1247 | req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
|
|
1248 | req->fh2 = newSVsv (in_fh); |
|
|
1249 | req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
|
|
1250 | req->offset = in_offset; |
|
|
1251 | req->length = length; |
|
|
1252 | |
|
|
1253 | REQ_SEND; |
|
|
1254 | } |
|
|
1255 | |
|
|
1256 | void |
647 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
1257 | aio_readahead (fh,offset,length,callback=&PL_sv_undef) |
648 | SV * fh |
1258 | SV * fh |
649 | UV offset |
1259 | UV offset |
650 | IV length |
1260 | IV length |
651 | SV * callback |
1261 | SV * callback |
652 | PROTOTYPE: $$$;$ |
1262 | PROTOTYPE: $$$;$ |
653 | CODE: |
1263 | PPCODE: |
654 | { |
1264 | { |
655 | dREQ; |
1265 | dREQ; |
656 | |
1266 | |
657 | req->type = REQ_READAHEAD; |
1267 | req->type = REQ_READAHEAD; |
658 | req->fh = newSVsv (fh); |
1268 | req->fh = newSVsv (fh); |
659 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
1269 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
660 | req->offset = offset; |
1270 | req->offset = offset; |
661 | req->length = length; |
1271 | req->length = length; |
662 | |
1272 | |
663 | send_req (req); |
1273 | REQ_SEND; |
664 | } |
1274 | } |
665 | |
1275 | |
666 | void |
1276 | void |
667 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
1277 | aio_stat (fh_or_path,callback=&PL_sv_undef) |
668 | SV * fh_or_path |
1278 | SV * fh_or_path |
669 | SV * callback |
1279 | SV * callback |
670 | ALIAS: |
1280 | ALIAS: |
671 | aio_stat = REQ_STAT |
1281 | aio_stat = REQ_STAT |
672 | aio_lstat = REQ_LSTAT |
1282 | aio_lstat = REQ_LSTAT |
673 | CODE: |
1283 | PPCODE: |
674 | { |
1284 | { |
675 | dREQ; |
1285 | dREQ; |
676 | |
1286 | |
677 | New (0, req->statdata, 1, Stat_t); |
1287 | New (0, req->statdata, 1, Stat_t); |
678 | if (!req->statdata) |
1288 | if (!req->statdata) |
679 | { |
1289 | { |
680 | free_req (req); |
1290 | req_free (req); |
681 | croak ("out of memory during aio_req->statdata allocation"); |
1291 | croak ("out of memory during aio_req->statdata allocation"); |
682 | } |
1292 | } |
683 | |
1293 | |
684 | if (SvPOK (fh_or_path)) |
1294 | if (SvPOK (fh_or_path)) |
685 | { |
1295 | { |
… | |
… | |
692 | req->type = REQ_FSTAT; |
1302 | req->type = REQ_FSTAT; |
693 | req->fh = newSVsv (fh_or_path); |
1303 | req->fh = newSVsv (fh_or_path); |
694 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
1304 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
695 | } |
1305 | } |
696 | |
1306 | |
697 | send_req (req); |
1307 | REQ_SEND; |
698 | } |
1308 | } |
699 | |
1309 | |
700 | void |
1310 | void |
701 | aio_unlink(pathname,callback=&PL_sv_undef) |
1311 | aio_unlink (pathname,callback=&PL_sv_undef) |
702 | SV * pathname |
1312 | SV * pathname |
703 | SV * callback |
1313 | SV * callback |
704 | ALIAS: |
1314 | ALIAS: |
705 | aio_unlink = REQ_UNLINK |
1315 | aio_unlink = REQ_UNLINK |
706 | aio_rmdir = REQ_RMDIR |
1316 | aio_rmdir = REQ_RMDIR |
|
|
1317 | aio_readdir = REQ_READDIR |
707 | CODE: |
1318 | PPCODE: |
708 | { |
1319 | { |
709 | dREQ; |
1320 | dREQ; |
710 | |
1321 | |
711 | req->type = ix; |
1322 | req->type = ix; |
712 | req->data = newSVsv (pathname); |
1323 | req->data = newSVsv (pathname); |
713 | req->dataptr = SvPVbyte_nolen (req->data); |
1324 | req->dataptr = SvPVbyte_nolen (req->data); |
714 | |
1325 | |
715 | send_req (req); |
1326 | REQ_SEND; |
716 | } |
1327 | } |
717 | |
1328 | |
718 | void |
1329 | void |
719 | aio_symlink(oldpath,newpath,callback=&PL_sv_undef) |
1330 | aio_link (oldpath,newpath,callback=&PL_sv_undef) |
720 | SV * oldpath |
1331 | SV * oldpath |
721 | SV * newpath |
1332 | SV * newpath |
722 | SV * callback |
1333 | SV * callback |
|
|
1334 | ALIAS: |
|
|
1335 | aio_link = REQ_LINK |
|
|
1336 | aio_symlink = REQ_SYMLINK |
|
|
1337 | aio_rename = REQ_RENAME |
723 | CODE: |
1338 | PPCODE: |
724 | { |
1339 | { |
725 | dREQ; |
1340 | dREQ; |
726 | |
1341 | |
727 | req->type = REQ_SYMLINK; |
1342 | req->type = ix; |
728 | req->fh = newSVsv (oldpath); |
1343 | req->fh = newSVsv (oldpath); |
729 | req->data2ptr = SvPVbyte_nolen (req->fh); |
1344 | req->data2ptr = SvPVbyte_nolen (req->fh); |
730 | req->data = newSVsv (newpath); |
1345 | req->data = newSVsv (newpath); |
731 | req->dataptr = SvPVbyte_nolen (req->data); |
1346 | req->dataptr = SvPVbyte_nolen (req->data); |
732 | |
1347 | |
733 | send_req (req); |
1348 | REQ_SEND; |
734 | } |
1349 | } |
735 | |
1350 | |
736 | void |
1351 | void |
|
|
1352 | aio_busy (delay,callback=&PL_sv_undef) |
|
|
1353 | double delay |
|
|
1354 | SV * callback |
|
|
1355 | PPCODE: |
|
|
1356 | { |
|
|
1357 | dREQ; |
|
|
1358 | |
|
|
1359 | req->type = REQ_BUSY; |
|
|
1360 | req->fd = delay < 0. ? 0 : delay; |
|
|
1361 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
|
|
1362 | |
|
|
1363 | REQ_SEND; |
|
|
1364 | } |
|
|
1365 | |
|
|
1366 | void |
|
|
1367 | aio_group (callback=&PL_sv_undef) |
|
|
1368 | SV * callback |
|
|
1369 | PROTOTYPE: ;$ |
|
|
1370 | PPCODE: |
|
|
1371 | { |
|
|
1372 | dREQ; |
|
|
1373 | |
|
|
1374 | req->type = REQ_GROUP; |
|
|
1375 | req_send (req); |
|
|
1376 | |
|
|
1377 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
|
|
1378 | } |
|
|
1379 | |
|
|
1380 | void |
|
|
1381 | aio_nop (callback=&PL_sv_undef) |
|
|
1382 | SV * callback |
|
|
1383 | PPCODE: |
|
|
1384 | { |
|
|
1385 | dREQ; |
|
|
1386 | |
|
|
1387 | req->type = REQ_NOP; |
|
|
1388 | |
|
|
1389 | REQ_SEND; |
|
|
1390 | } |
|
|
1391 | |
|
|
1392 | void |
|
|
1393 | aioreq_pri (int pri = DEFAULT_PRI) |
|
|
1394 | CODE: |
|
|
1395 | if (pri < PRI_MIN) pri = PRI_MIN; |
|
|
1396 | if (pri > PRI_MAX) pri = PRI_MAX; |
|
|
1397 | next_pri = pri + PRI_BIAS; |
|
|
1398 | |
|
|
1399 | void |
|
|
1400 | aioreq_nice (int nice = 0) |
|
|
1401 | CODE: |
|
|
1402 | nice = next_pri - nice; |
|
|
1403 | if (nice < PRI_MIN) nice = PRI_MIN; |
|
|
1404 | if (nice > PRI_MAX) nice = PRI_MAX; |
|
|
1405 | next_pri = nice + PRI_BIAS; |
|
|
1406 | |
|
|
1407 | void |
737 | flush() |
1408 | flush () |
738 | PROTOTYPE: |
1409 | PROTOTYPE: |
739 | CODE: |
1410 | CODE: |
740 | while (nreqs) |
1411 | while (nreqs) |
741 | { |
1412 | { |
742 | poll_wait (); |
1413 | poll_wait (); |
… | |
… | |
782 | CODE: |
1453 | CODE: |
783 | RETVAL = nreqs; |
1454 | RETVAL = nreqs; |
784 | OUTPUT: |
1455 | OUTPUT: |
785 | RETVAL |
1456 | RETVAL |
786 | |
1457 | |
|
|
1458 | PROTOTYPES: DISABLE |
|
|
1459 | |
|
|
1460 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
|
|
1461 | |
|
|
1462 | void |
|
|
1463 | cancel (aio_req_ornot req) |
|
|
1464 | CODE: |
|
|
1465 | req_cancel (req); |
|
|
1466 | |
|
|
1467 | void |
|
|
1468 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
|
|
1469 | CODE: |
|
|
1470 | SvREFCNT_dec (req->callback); |
|
|
1471 | req->callback = newSVsv (callback); |
|
|
1472 | |
|
|
1473 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
|
|
1474 | |
|
|
1475 | void |
|
|
1476 | add (aio_req grp, ...) |
|
|
1477 | PPCODE: |
|
|
1478 | { |
|
|
1479 | int i; |
|
|
1480 | aio_req req; |
|
|
1481 | |
|
|
1482 | if (grp->fd == 2) |
|
|
1483 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
|
|
1484 | |
|
|
1485 | for (i = 1; i < items; ++i ) |
|
|
1486 | { |
|
|
1487 | if (GIMME_V != G_VOID) |
|
|
1488 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
|
|
1489 | |
|
|
1490 | req = SvAIO_REQ (ST (i)); |
|
|
1491 | |
|
|
1492 | if (req) |
|
|
1493 | { |
|
|
1494 | ++grp->length; |
|
|
1495 | req->grp = grp; |
|
|
1496 | |
|
|
1497 | req->grp_prev = 0; |
|
|
1498 | req->grp_next = grp->grp_first; |
|
|
1499 | |
|
|
1500 | if (grp->grp_first) |
|
|
1501 | grp->grp_first->grp_prev = req; |
|
|
1502 | |
|
|
1503 | grp->grp_first = req; |
|
|
1504 | } |
|
|
1505 | } |
|
|
1506 | } |
|
|
1507 | |
|
|
1508 | void |
|
|
1509 | cancel_subs (aio_req_ornot req) |
|
|
1510 | CODE: |
|
|
1511 | req_cancel_subs (req); |
|
|
1512 | |
|
|
1513 | void |
|
|
1514 | result (aio_req grp, ...) |
|
|
1515 | CODE: |
|
|
1516 | { |
|
|
1517 | int i; |
|
|
1518 | AV *av = newAV (); |
|
|
1519 | |
|
|
1520 | for (i = 1; i < items; ++i ) |
|
|
1521 | av_push (av, newSVsv (ST (i))); |
|
|
1522 | |
|
|
1523 | SvREFCNT_dec (grp->data); |
|
|
1524 | grp->data = (SV *)av; |
|
|
1525 | } |
|
|
1526 | |
|
|
1527 | void |
|
|
1528 | limit (aio_req grp, int limit) |
|
|
1529 | CODE: |
|
|
1530 | grp->fd2 = limit; |
|
|
1531 | aio_grp_feed (grp); |
|
|
1532 | |
|
|
1533 | void |
|
|
1534 | feed (aio_req grp, SV *callback=&PL_sv_undef) |
|
|
1535 | CODE: |
|
|
1536 | { |
|
|
1537 | SvREFCNT_dec (grp->fh2); |
|
|
1538 | grp->fh2 = newSVsv (callback); |
|
|
1539 | |
|
|
1540 | if (grp->fd2 <= 0) |
|
|
1541 | grp->fd2 = 2; |
|
|
1542 | |
|
|
1543 | aio_grp_feed (grp); |
|
|
1544 | } |
|
|
1545 | |