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1 | #include "xthread.h" |
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2 | |
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3 | #include <errno.h> |
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4 | |
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5 | #include "EXTERN.h" |
1 | #include "perl.h" |
6 | #include "perl.h" |
2 | #include "XSUB.h" |
7 | #include "XSUB.h" |
3 | |
8 | |
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9 | #include "autoconf/config.h" |
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10 | |
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11 | #include <stddef.h> |
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12 | #include <stdlib.h> |
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13 | #include <errno.h> |
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14 | #include <sys/time.h> |
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15 | #include <sys/select.h> |
4 | #include <sys/types.h> |
16 | #include <sys/types.h> |
5 | #include <sys/stat.h> |
17 | #include <sys/stat.h> |
6 | |
18 | #include <limits.h> |
7 | #include <unistd.h> |
19 | #include <unistd.h> |
8 | #include <fcntl.h> |
20 | #include <fcntl.h> |
9 | #include <signal.h> |
21 | #include <signal.h> |
10 | #include <sched.h> |
22 | #include <sched.h> |
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23 | |
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24 | #if HAVE_SENDFILE |
11 | #if __linux |
25 | # if __linux |
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26 | # include <sys/sendfile.h> |
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27 | # elif __freebsd |
12 | #include <sys/syscall.h> |
28 | # include <sys/socket.h> |
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29 | # include <sys/uio.h> |
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30 | # elif __hpux |
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31 | # include <sys/socket.h> |
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32 | # elif __solaris /* not yet */ |
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33 | # include <sys/sendfile.h> |
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34 | # else |
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35 | # error sendfile support requested but not available |
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36 | # endif |
13 | #endif |
37 | #endif |
14 | |
38 | |
15 | #include <pthread.h> |
39 | /* number of seconds after which idle threads exit */ |
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40 | #define IDLE_TIMEOUT 10 |
16 | |
41 | |
17 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
42 | /* used for struct dirent, AIX doesn't provide it */ |
18 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
43 | #ifndef NAME_MAX |
19 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
44 | # define NAME_MAX 4096 |
20 | |
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21 | #if __ia64 |
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22 | # define STACKSIZE 65536 |
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23 | #else |
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24 | # define STACKSIZE 4096 |
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25 | #endif |
45 | #endif |
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46 | |
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47 | /* buffer size for various temporary buffers */ |
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48 | #define AIO_BUFSIZE 65536 |
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49 | |
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50 | #define dBUF \ |
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51 | char *aio_buf; \ |
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52 | LOCK (wrklock); \ |
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53 | self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ |
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54 | UNLOCK (wrklock); \ |
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55 | if (!aio_buf) \ |
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56 | return -1; |
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57 | |
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58 | typedef SV SV8; /* byte-sv, used for argument-checking */ |
26 | |
59 | |
27 | enum { |
60 | enum { |
28 | REQ_QUIT, |
61 | REQ_QUIT, |
29 | REQ_OPEN, REQ_CLOSE, |
62 | REQ_OPEN, REQ_CLOSE, |
30 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
63 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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64 | REQ_SENDFILE, |
31 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
65 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
32 | REQ_FSYNC, REQ_FDATASYNC, |
66 | REQ_FSYNC, REQ_FDATASYNC, |
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67 | REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME, |
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68 | REQ_MKNOD, REQ_READDIR, |
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69 | REQ_LINK, REQ_SYMLINK, REQ_READLINK, |
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70 | REQ_GROUP, REQ_NOP, |
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71 | REQ_BUSY, |
33 | }; |
72 | }; |
34 | |
73 | |
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74 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
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75 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
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76 | |
35 | typedef struct aio_cb { |
77 | typedef struct aio_cb |
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78 | { |
36 | struct aio_cb *volatile next; |
79 | struct aio_cb *volatile next; |
37 | |
80 | |
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81 | SV *callback, *fh; |
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82 | SV *sv1, *sv2; |
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83 | void *ptr1, *ptr2; |
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84 | off_t offs; |
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85 | size_t size; |
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86 | ssize_t result; |
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87 | |
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88 | STRLEN stroffset; |
38 | int type; |
89 | int type; |
39 | |
90 | int int1, int2; |
40 | int fd; |
91 | int errorno; |
41 | off_t offset; |
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42 | size_t length; |
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43 | ssize_t result; |
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44 | mode_t mode; /* open */ |
92 | mode_t mode; /* open */ |
45 | int errorno; |
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46 | SV *data, *callback, *fh; |
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47 | void *dataptr; |
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48 | STRLEN dataoffset; |
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49 | |
93 | |
50 | Stat_t *statdata; |
94 | unsigned char flags; |
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95 | unsigned char pri; |
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96 | |
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97 | SV *self; /* the perl counterpart of this request, if any */ |
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98 | struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; |
51 | } aio_cb; |
99 | } aio_cb; |
52 | |
100 | |
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101 | enum { |
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102 | FLAG_CANCELLED = 0x01, /* request was cancelled */ |
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103 | FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */ |
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104 | FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */ |
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105 | }; |
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106 | |
53 | typedef aio_cb *aio_req; |
107 | typedef aio_cb *aio_req; |
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108 | typedef aio_cb *aio_req_ornot; |
54 | |
109 | |
55 | static int started; |
110 | enum { |
56 | static volatile int nreqs; |
111 | PRI_MIN = -4, |
57 | static int max_outstanding = 1<<30; |
112 | PRI_MAX = 4, |
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113 | |
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114 | DEFAULT_PRI = 0, |
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115 | PRI_BIAS = -PRI_MIN, |
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116 | NUM_PRI = PRI_MAX + PRI_BIAS + 1, |
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117 | }; |
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118 | |
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119 | #define AIO_TICKS ((1000000 + 1023) >> 10) |
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120 | |
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121 | static unsigned int max_poll_time = 0; |
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122 | static unsigned int max_poll_reqs = 0; |
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123 | |
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124 | /* calculcate time difference in ~1/AIO_TICKS of a second */ |
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125 | static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
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126 | { |
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127 | return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS |
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128 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
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129 | } |
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130 | |
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131 | static thread_t main_tid; |
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132 | static int main_sig; |
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133 | static int block_sig_level; |
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134 | |
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135 | void block_sig () |
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136 | { |
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137 | sigset_t ss; |
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138 | |
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139 | if (block_sig_level++) |
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140 | return; |
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141 | |
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142 | if (!main_sig) |
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143 | return; |
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144 | |
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145 | sigemptyset (&ss); |
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146 | sigaddset (&ss, main_sig); |
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147 | pthread_sigmask (SIG_BLOCK, &ss, 0); |
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148 | } |
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149 | |
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150 | void unblock_sig () |
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151 | { |
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152 | sigset_t ss; |
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153 | |
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154 | if (--block_sig_level) |
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155 | return; |
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156 | |
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157 | if (!main_sig) |
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158 | return; |
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159 | |
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160 | sigemptyset (&ss); |
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161 | sigaddset (&ss, main_sig); |
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162 | pthread_sigmask (SIG_UNBLOCK, &ss, 0); |
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163 | } |
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164 | |
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165 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
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166 | |
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167 | static unsigned int started, idle, wanted; |
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168 | |
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169 | /* worker threads management */ |
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170 | static mutex_t wrklock = MUTEX_INIT; |
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171 | |
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172 | typedef struct worker { |
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173 | /* locked by wrklock */ |
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174 | struct worker *prev, *next; |
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175 | |
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176 | thread_t tid; |
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177 | |
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178 | /* locked by reslock, reqlock or wrklock */ |
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179 | aio_req req; /* currently processed request */ |
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180 | void *dbuf; |
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181 | DIR *dirp; |
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182 | } worker; |
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183 | |
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184 | static worker wrk_first = { &wrk_first, &wrk_first, 0 }; |
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185 | |
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186 | static void worker_clear (worker *wrk) |
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187 | { |
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188 | if (wrk->dirp) |
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189 | { |
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190 | closedir (wrk->dirp); |
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191 | wrk->dirp = 0; |
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192 | } |
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193 | |
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194 | if (wrk->dbuf) |
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195 | { |
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196 | free (wrk->dbuf); |
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197 | wrk->dbuf = 0; |
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198 | } |
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199 | } |
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200 | |
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201 | static void worker_free (worker *wrk) |
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202 | { |
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203 | wrk->next->prev = wrk->prev; |
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204 | wrk->prev->next = wrk->next; |
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205 | |
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206 | free (wrk); |
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207 | } |
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208 | |
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209 | static volatile unsigned int nreqs, nready, npending; |
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210 | static volatile unsigned int max_idle = 4; |
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211 | static volatile unsigned int max_outstanding = 0xffffffff; |
58 | static int respipe [2]; |
212 | static int respipe [2]; |
59 | |
213 | |
60 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
214 | static mutex_t reslock = MUTEX_INIT; |
61 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
215 | static mutex_t reqlock = MUTEX_INIT; |
62 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
216 | static cond_t reqwait = COND_INIT; |
63 | |
217 | |
64 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
218 | #if WORDACCESS_UNSAFE |
65 | static volatile aio_req ress, rese; /* queue start, queue end */ |
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66 | |
219 | |
67 | static void |
220 | static unsigned int get_nready () |
68 | poll_wait () |
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69 | { |
221 | { |
70 | if (nreqs && !ress) |
222 | unsigned int retval; |
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223 | |
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224 | LOCK (reqlock); |
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225 | retval = nready; |
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226 | UNLOCK (reqlock); |
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227 | |
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228 | return retval; |
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229 | } |
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230 | |
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231 | static unsigned int get_npending () |
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232 | { |
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233 | unsigned int retval; |
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234 | |
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235 | LOCK (reslock); |
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236 | retval = npending; |
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237 | UNLOCK (reslock); |
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238 | |
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239 | return retval; |
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240 | } |
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241 | |
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242 | static unsigned int get_nthreads () |
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243 | { |
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244 | unsigned int retval; |
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245 | |
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246 | LOCK (wrklock); |
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247 | retval = started; |
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248 | UNLOCK (wrklock); |
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249 | |
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250 | return retval; |
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251 | } |
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252 | |
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253 | #else |
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254 | |
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255 | # define get_nready() nready |
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256 | # define get_npending() npending |
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257 | # define get_nthreads() started |
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258 | |
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259 | #endif |
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260 | |
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261 | /* |
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262 | * a somewhat faster data structure might be nice, but |
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263 | * with 8 priorities this actually needs <20 insns |
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264 | * per shift, the most expensive operation. |
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265 | */ |
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266 | typedef struct { |
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267 | aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */ |
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268 | int size; |
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269 | } reqq; |
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270 | |
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271 | static reqq req_queue; |
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272 | static reqq res_queue; |
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273 | |
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274 | int reqq_push (reqq *q, aio_req req) |
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275 | { |
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276 | int pri = req->pri; |
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277 | req->next = 0; |
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278 | |
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279 | if (q->qe[pri]) |
71 | { |
280 | { |
72 | fd_set rfd; |
281 | q->qe[pri]->next = req; |
73 | FD_ZERO(&rfd); |
282 | q->qe[pri] = req; |
74 | FD_SET(respipe [0], &rfd); |
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75 | |
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76 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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77 | } |
283 | } |
78 | } |
284 | else |
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285 | q->qe[pri] = q->qs[pri] = req; |
79 | |
286 | |
80 | static int |
287 | return q->size++; |
81 | poll_cb () |
288 | } |
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289 | |
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290 | aio_req reqq_shift (reqq *q) |
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291 | { |
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292 | int pri; |
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293 | |
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294 | if (!q->size) |
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295 | return 0; |
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296 | |
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297 | --q->size; |
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298 | |
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299 | for (pri = NUM_PRI; pri--; ) |
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300 | { |
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301 | aio_req req = q->qs[pri]; |
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302 | |
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303 | if (req) |
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304 | { |
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305 | if (!(q->qs[pri] = req->next)) |
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306 | q->qe[pri] = 0; |
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307 | |
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308 | return req; |
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309 | } |
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310 | } |
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311 | |
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312 | abort (); |
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313 | } |
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314 | |
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315 | static int poll_cb (); |
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316 | static int req_invoke (aio_req req); |
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317 | static void req_free (aio_req req); |
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318 | static void req_cancel (aio_req req); |
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319 | |
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320 | /* must be called at most once */ |
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321 | static SV *req_sv (aio_req req, const char *klass) |
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322 | { |
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323 | if (!req->self) |
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324 | { |
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325 | req->self = (SV *)newHV (); |
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326 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
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327 | } |
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328 | |
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329 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
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330 | } |
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331 | |
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332 | static aio_req SvAIO_REQ (SV *sv) |
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333 | { |
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334 | MAGIC *mg; |
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335 | |
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336 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
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337 | croak ("object of class " AIO_REQ_KLASS " expected"); |
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338 | |
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339 | mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
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340 | |
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341 | return mg ? (aio_req)mg->mg_ptr : 0; |
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342 | } |
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343 | |
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344 | static void aio_grp_feed (aio_req grp) |
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345 | { |
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346 | block_sig (); |
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347 | |
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348 | while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) |
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349 | { |
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350 | int old_len = grp->size; |
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351 | |
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352 | if (grp->sv2 && SvOK (grp->sv2)) |
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353 | { |
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354 | dSP; |
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355 | |
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356 | ENTER; |
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357 | SAVETMPS; |
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358 | PUSHMARK (SP); |
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359 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
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360 | PUTBACK; |
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361 | call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); |
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362 | SPAGAIN; |
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363 | FREETMPS; |
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364 | LEAVE; |
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365 | } |
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366 | |
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367 | /* stop if no progress has been made */ |
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368 | if (old_len == grp->size) |
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369 | { |
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370 | SvREFCNT_dec (grp->sv2); |
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371 | grp->sv2 = 0; |
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372 | break; |
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373 | } |
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374 | } |
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375 | |
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376 | unblock_sig (); |
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377 | } |
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378 | |
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379 | static void aio_grp_dec (aio_req grp) |
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380 | { |
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381 | --grp->size; |
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382 | |
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383 | /* call feeder, if applicable */ |
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384 | aio_grp_feed (grp); |
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385 | |
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386 | /* finish, if done */ |
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387 | if (!grp->size && grp->int1) |
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388 | { |
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389 | block_sig (); |
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390 | |
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391 | if (!req_invoke (grp)) |
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392 | { |
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393 | req_free (grp); |
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394 | unblock_sig (); |
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395 | croak (0); |
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396 | } |
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397 | |
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398 | req_free (grp); |
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399 | unblock_sig (); |
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400 | } |
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401 | } |
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402 | |
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403 | static int req_invoke (aio_req req) |
82 | { |
404 | { |
83 | dSP; |
405 | dSP; |
84 | int count = 0; |
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85 | aio_req req, prv; |
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86 | |
406 | |
87 | pthread_mutex_lock (&reslock); |
407 | if (req->flags & FLAG_SV1_RO_OFF) |
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408 | SvREADONLY_off (req->sv1); |
88 | |
409 | |
89 | { |
410 | if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
90 | /* read any signals sent by the worker threads */ |
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91 | char buf [32]; |
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92 | while (read (respipe [0], buf, 32) > 0) |
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93 | ; |
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94 | } |
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95 | |
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96 | req = ress; |
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97 | ress = rese = 0; |
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98 | |
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99 | pthread_mutex_unlock (&reslock); |
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100 | |
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101 | while (req) |
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102 | { |
411 | { |
103 | nreqs--; |
412 | ENTER; |
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413 | SAVETMPS; |
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414 | PUSHMARK (SP); |
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415 | EXTEND (SP, 1); |
104 | |
416 | |
105 | if (req->type == REQ_QUIT) |
417 | switch (req->type) |
106 | started--; |
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107 | else |
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108 | { |
418 | { |
109 | int errorno = errno; |
419 | case REQ_READDIR: |
110 | errno = req->errorno; |
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111 | |
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112 | if (req->type == REQ_READ) |
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113 | SvCUR_set (req->data, req->dataoffset |
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114 | + req->result > 0 ? req->result : 0); |
|
|
115 | |
|
|
116 | if (req->data) |
|
|
117 | SvREFCNT_dec (req->data); |
|
|
118 | |
|
|
119 | if (req->fh) |
|
|
120 | SvREFCNT_dec (req->fh); |
|
|
121 | |
|
|
122 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
|
|
123 | { |
420 | { |
124 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
421 | SV *rv = &PL_sv_undef; |
125 | PL_laststatval = req->result; |
|
|
126 | PL_statcache = *(req->statdata); |
|
|
127 | |
422 | |
128 | Safefree (req->statdata); |
423 | if (req->result >= 0) |
|
|
424 | { |
|
|
425 | int i; |
|
|
426 | char *buf = req->ptr2; |
|
|
427 | AV *av = newAV (); |
|
|
428 | |
|
|
429 | av_extend (av, req->result - 1); |
|
|
430 | |
|
|
431 | for (i = 0; i < req->result; ++i) |
|
|
432 | { |
|
|
433 | SV *sv = newSVpv (buf, 0); |
|
|
434 | |
|
|
435 | av_store (av, i, sv); |
|
|
436 | buf += SvCUR (sv) + 1; |
|
|
437 | } |
|
|
438 | |
|
|
439 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
|
|
440 | } |
|
|
441 | |
|
|
442 | PUSHs (rv); |
129 | } |
443 | } |
|
|
444 | break; |
130 | |
445 | |
131 | ENTER; |
446 | case REQ_OPEN: |
132 | PUSHMARK (SP); |
|
|
133 | XPUSHs (sv_2mortal (newSViv (req->result))); |
|
|
134 | |
|
|
135 | if (req->type == REQ_OPEN) |
|
|
136 | { |
447 | { |
137 | /* convert fd to fh */ |
448 | /* convert fd to fh */ |
138 | SV *fh; |
449 | SV *fh; |
139 | |
450 | |
|
|
451 | PUSHs (sv_2mortal (newSViv (req->result))); |
140 | PUTBACK; |
452 | PUTBACK; |
141 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
453 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
142 | SPAGAIN; |
454 | SPAGAIN; |
143 | |
455 | |
144 | fh = SvREFCNT_inc (POPs); |
456 | fh = POPs; |
145 | |
|
|
146 | PUSHMARK (SP); |
457 | PUSHMARK (SP); |
147 | XPUSHs (sv_2mortal (fh)); |
458 | XPUSHs (fh); |
148 | } |
459 | } |
|
|
460 | break; |
149 | |
461 | |
150 | if (SvOK (req->callback)) |
462 | case REQ_GROUP: |
|
|
463 | req->int1 = 2; /* mark group as finished */ |
|
|
464 | |
|
|
465 | if (req->sv1) |
151 | { |
466 | { |
152 | PUTBACK; |
467 | int i; |
153 | call_sv (req->callback, G_VOID | G_EVAL); |
468 | AV *av = (AV *)req->sv1; |
154 | SPAGAIN; |
469 | |
|
|
470 | EXTEND (SP, AvFILL (av) + 1); |
|
|
471 | for (i = 0; i <= AvFILL (av); ++i) |
|
|
472 | PUSHs (*av_fetch (av, i, 0)); |
155 | } |
473 | } |
|
|
474 | break; |
156 | |
475 | |
157 | LEAVE; |
476 | case REQ_NOP: |
|
|
477 | case REQ_BUSY: |
|
|
478 | break; |
|
|
479 | |
|
|
480 | case REQ_READLINK: |
|
|
481 | if (req->result > 0) |
158 | |
482 | { |
159 | if (req->callback) |
483 | SvCUR_set (req->sv1, req->result); |
160 | SvREFCNT_dec (req->callback); |
484 | *SvEND (req->sv1) = 0; |
|
|
485 | PUSHs (req->sv1); |
|
|
486 | } |
|
|
487 | break; |
161 | |
488 | |
162 | errno = errorno; |
489 | case REQ_STAT: |
163 | count++; |
490 | case REQ_LSTAT: |
|
|
491 | case REQ_FSTAT: |
|
|
492 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
|
|
493 | PL_laststatval = req->result; |
|
|
494 | PL_statcache = *(Stat_t *)(req->ptr2); |
|
|
495 | PUSHs (sv_2mortal (newSViv (req->result))); |
|
|
496 | break; |
|
|
497 | |
|
|
498 | case REQ_READ: |
|
|
499 | SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0)); |
|
|
500 | *SvEND (req->sv1) = 0; |
|
|
501 | PUSHs (sv_2mortal (newSViv (req->result))); |
|
|
502 | break; |
|
|
503 | |
|
|
504 | default: |
|
|
505 | PUSHs (sv_2mortal (newSViv (req->result))); |
|
|
506 | break; |
164 | } |
507 | } |
165 | |
508 | |
166 | prv = req; |
509 | errno = req->errorno; |
167 | req = req->next; |
|
|
168 | Safefree (prv); |
|
|
169 | |
510 | |
170 | /* TODO: croak on errors? */ |
511 | PUTBACK; |
|
|
512 | call_sv (req->callback, G_VOID | G_EVAL); |
|
|
513 | SPAGAIN; |
|
|
514 | |
|
|
515 | FREETMPS; |
|
|
516 | LEAVE; |
171 | } |
517 | } |
172 | |
518 | |
173 | return count; |
519 | if (req->grp) |
|
|
520 | { |
|
|
521 | aio_req grp = req->grp; |
|
|
522 | |
|
|
523 | /* unlink request */ |
|
|
524 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
|
|
525 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
|
|
526 | |
|
|
527 | if (grp->grp_first == req) |
|
|
528 | grp->grp_first = req->grp_next; |
|
|
529 | |
|
|
530 | aio_grp_dec (grp); |
|
|
531 | } |
|
|
532 | |
|
|
533 | return !SvTRUE (ERRSV); |
|
|
534 | } |
|
|
535 | |
|
|
536 | static void req_free (aio_req req) |
|
|
537 | { |
|
|
538 | if (req->self) |
|
|
539 | { |
|
|
540 | sv_unmagic (req->self, PERL_MAGIC_ext); |
|
|
541 | SvREFCNT_dec (req->self); |
|
|
542 | } |
|
|
543 | |
|
|
544 | SvREFCNT_dec (req->fh); |
|
|
545 | SvREFCNT_dec (req->sv1); |
|
|
546 | SvREFCNT_dec (req->sv2); |
|
|
547 | SvREFCNT_dec (req->callback); |
|
|
548 | |
|
|
549 | if (req->flags & FLAG_PTR2_FREE) |
|
|
550 | free (req->ptr2); |
|
|
551 | |
|
|
552 | Safefree (req); |
|
|
553 | } |
|
|
554 | |
|
|
555 | static void req_cancel_subs (aio_req grp) |
|
|
556 | { |
|
|
557 | aio_req sub; |
|
|
558 | |
|
|
559 | if (grp->type != REQ_GROUP) |
|
|
560 | return; |
|
|
561 | |
|
|
562 | SvREFCNT_dec (grp->sv2); |
|
|
563 | grp->sv2 = 0; |
|
|
564 | |
|
|
565 | for (sub = grp->grp_first; sub; sub = sub->grp_next) |
|
|
566 | req_cancel (sub); |
|
|
567 | } |
|
|
568 | |
|
|
569 | static void req_cancel (aio_req req) |
|
|
570 | { |
|
|
571 | req->flags |= FLAG_CANCELLED; |
|
|
572 | |
|
|
573 | req_cancel_subs (req); |
174 | } |
574 | } |
175 | |
575 | |
176 | static void *aio_proc(void *arg); |
576 | static void *aio_proc(void *arg); |
177 | |
577 | |
178 | static void |
|
|
179 | start_thread (void) |
578 | static void start_thread (void) |
180 | { |
579 | { |
181 | sigset_t fullsigset, oldsigset; |
580 | worker *wrk = calloc (1, sizeof (worker)); |
182 | pthread_t tid; |
|
|
183 | pthread_attr_t attr; |
|
|
184 | |
581 | |
185 | pthread_attr_init (&attr); |
582 | if (!wrk) |
186 | pthread_attr_setstacksize (&attr, STACKSIZE); |
583 | croak ("unable to allocate worker thread data"); |
187 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
|
|
188 | |
584 | |
189 | sigfillset (&fullsigset); |
585 | LOCK (wrklock); |
190 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
|
|
191 | |
586 | |
192 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
587 | if (thread_create (&wrk->tid, aio_proc, (void *)wrk)) |
193 | started++; |
|
|
194 | |
|
|
195 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
|
|
196 | } |
|
|
197 | |
|
|
198 | static void |
|
|
199 | send_req (aio_req req) |
|
|
200 | { |
|
|
201 | nreqs++; |
|
|
202 | |
|
|
203 | pthread_mutex_lock (&reqlock); |
|
|
204 | |
|
|
205 | req->next = 0; |
|
|
206 | |
|
|
207 | if (reqe) |
|
|
208 | { |
588 | { |
209 | reqe->next = req; |
589 | wrk->prev = &wrk_first; |
210 | reqe = req; |
590 | wrk->next = wrk_first.next; |
|
|
591 | wrk_first.next->prev = wrk; |
|
|
592 | wrk_first.next = wrk; |
|
|
593 | ++started; |
211 | } |
594 | } |
212 | else |
595 | else |
213 | reqe = reqs = req; |
596 | free (wrk); |
214 | |
597 | |
215 | pthread_cond_signal (&reqwait); |
598 | UNLOCK (wrklock); |
216 | pthread_mutex_unlock (&reqlock); |
599 | } |
217 | |
600 | |
218 | while (nreqs > max_outstanding) |
601 | static void maybe_start_thread () |
|
|
602 | { |
|
|
603 | if (get_nthreads () >= wanted) |
|
|
604 | return; |
|
|
605 | |
|
|
606 | /* todo: maybe use idle here, but might be less exact */ |
|
|
607 | if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs) |
|
|
608 | return; |
|
|
609 | |
|
|
610 | start_thread (); |
|
|
611 | } |
|
|
612 | |
|
|
613 | static void req_send (aio_req req) |
|
|
614 | { |
|
|
615 | block_sig (); |
|
|
616 | |
|
|
617 | ++nreqs; |
|
|
618 | |
|
|
619 | LOCK (reqlock); |
|
|
620 | ++nready; |
|
|
621 | reqq_push (&req_queue, req); |
|
|
622 | COND_SIGNAL (reqwait); |
|
|
623 | UNLOCK (reqlock); |
|
|
624 | |
|
|
625 | unblock_sig (); |
|
|
626 | |
|
|
627 | maybe_start_thread (); |
|
|
628 | } |
|
|
629 | |
|
|
630 | static void end_thread (void) |
|
|
631 | { |
|
|
632 | aio_req req; |
|
|
633 | |
|
|
634 | Newz (0, req, 1, aio_cb); |
|
|
635 | |
|
|
636 | req->type = REQ_QUIT; |
|
|
637 | req->pri = PRI_MAX + PRI_BIAS; |
|
|
638 | |
|
|
639 | LOCK (reqlock); |
|
|
640 | reqq_push (&req_queue, req); |
|
|
641 | COND_SIGNAL (reqwait); |
|
|
642 | UNLOCK (reqlock); |
|
|
643 | |
|
|
644 | LOCK (wrklock); |
|
|
645 | --started; |
|
|
646 | UNLOCK (wrklock); |
|
|
647 | } |
|
|
648 | |
|
|
649 | static void set_max_idle (int nthreads) |
|
|
650 | { |
|
|
651 | if (WORDACCESS_UNSAFE) LOCK (reqlock); |
|
|
652 | max_idle = nthreads <= 0 ? 1 : nthreads; |
|
|
653 | if (WORDACCESS_UNSAFE) UNLOCK (reqlock); |
|
|
654 | } |
|
|
655 | |
|
|
656 | static void min_parallel (int nthreads) |
|
|
657 | { |
|
|
658 | if (wanted < nthreads) |
|
|
659 | wanted = nthreads; |
|
|
660 | } |
|
|
661 | |
|
|
662 | static void max_parallel (int nthreads) |
|
|
663 | { |
|
|
664 | if (wanted > nthreads) |
|
|
665 | wanted = nthreads; |
|
|
666 | |
|
|
667 | while (started > wanted) |
|
|
668 | end_thread (); |
|
|
669 | } |
|
|
670 | |
|
|
671 | static void poll_wait () |
|
|
672 | { |
|
|
673 | fd_set rfd; |
|
|
674 | |
|
|
675 | while (nreqs) |
219 | { |
676 | { |
220 | poll_wait (); |
677 | int size; |
221 | poll_cb (); |
678 | if (WORDACCESS_UNSAFE) LOCK (reslock); |
|
|
679 | size = res_queue.size; |
|
|
680 | if (WORDACCESS_UNSAFE) UNLOCK (reslock); |
|
|
681 | |
|
|
682 | if (size) |
|
|
683 | return; |
|
|
684 | |
|
|
685 | maybe_start_thread (); |
|
|
686 | |
|
|
687 | FD_ZERO(&rfd); |
|
|
688 | FD_SET(respipe [0], &rfd); |
|
|
689 | |
|
|
690 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
222 | } |
691 | } |
223 | } |
692 | } |
224 | |
693 | |
225 | static void |
694 | static int poll_cb () |
226 | end_thread (void) |
|
|
227 | { |
695 | { |
|
|
696 | dSP; |
|
|
697 | int count = 0; |
|
|
698 | int maxreqs = max_poll_reqs; |
|
|
699 | int do_croak = 0; |
|
|
700 | struct timeval tv_start, tv_now; |
228 | aio_req req; |
701 | aio_req req; |
229 | New (0, req, 1, aio_cb); |
|
|
230 | req->type = REQ_QUIT; |
|
|
231 | |
702 | |
232 | send_req (req); |
703 | if (max_poll_time) |
233 | } |
704 | gettimeofday (&tv_start, 0); |
234 | |
705 | |
235 | static void * |
706 | block_sig (); |
236 | aio_proc (void *thr_arg) |
|
|
237 | { |
|
|
238 | aio_req req; |
|
|
239 | int type; |
|
|
240 | |
707 | |
241 | do |
708 | for (;;) |
242 | { |
709 | { |
243 | pthread_mutex_lock (&reqlock); |
|
|
244 | |
|
|
245 | for (;;) |
710 | for (;;) |
246 | { |
711 | { |
247 | req = reqs; |
712 | maybe_start_thread (); |
248 | |
713 | |
|
|
714 | LOCK (reslock); |
|
|
715 | req = reqq_shift (&res_queue); |
|
|
716 | |
249 | if (reqs) |
717 | if (req) |
250 | { |
718 | { |
251 | reqs = reqs->next; |
719 | --npending; |
252 | if (!reqs) reqe = 0; |
720 | |
|
|
721 | if (!res_queue.size) |
|
|
722 | { |
|
|
723 | /* read any signals sent by the worker threads */ |
|
|
724 | char buf [4]; |
|
|
725 | while (read (respipe [0], buf, 4) == 4) |
|
|
726 | ; |
|
|
727 | } |
253 | } |
728 | } |
|
|
729 | |
|
|
730 | UNLOCK (reslock); |
|
|
731 | |
|
|
732 | if (!req) |
|
|
733 | break; |
|
|
734 | |
|
|
735 | --nreqs; |
|
|
736 | |
|
|
737 | if (req->type == REQ_GROUP && req->size) |
|
|
738 | { |
|
|
739 | req->int1 = 1; /* mark request as delayed */ |
|
|
740 | continue; |
|
|
741 | } |
|
|
742 | else |
|
|
743 | { |
|
|
744 | if (!req_invoke (req)) |
|
|
745 | { |
|
|
746 | req_free (req); |
|
|
747 | unblock_sig (); |
|
|
748 | croak (0); |
|
|
749 | } |
|
|
750 | |
|
|
751 | count++; |
|
|
752 | } |
|
|
753 | |
|
|
754 | req_free (req); |
|
|
755 | |
|
|
756 | if (maxreqs && !--maxreqs) |
|
|
757 | break; |
|
|
758 | |
|
|
759 | if (max_poll_time) |
|
|
760 | { |
|
|
761 | gettimeofday (&tv_now, 0); |
|
|
762 | |
|
|
763 | if (tvdiff (&tv_start, &tv_now) >= max_poll_time) |
|
|
764 | break; |
|
|
765 | } |
|
|
766 | } |
|
|
767 | |
|
|
768 | if (nreqs <= max_outstanding) |
|
|
769 | break; |
|
|
770 | |
|
|
771 | poll_wait (); |
|
|
772 | |
|
|
773 | ++maxreqs; |
|
|
774 | } |
|
|
775 | |
|
|
776 | unblock_sig (); |
|
|
777 | return count; |
|
|
778 | } |
|
|
779 | |
|
|
780 | static void create_pipe () |
|
|
781 | { |
|
|
782 | if (pipe (respipe)) |
|
|
783 | croak ("unable to initialize result pipe"); |
|
|
784 | |
|
|
785 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
|
|
786 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
787 | |
|
|
788 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
|
|
789 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
790 | } |
|
|
791 | |
|
|
792 | /*****************************************************************************/ |
|
|
793 | /* work around various missing functions */ |
|
|
794 | |
|
|
795 | #if !HAVE_PREADWRITE |
|
|
796 | # define pread aio_pread |
|
|
797 | # define pwrite aio_pwrite |
|
|
798 | |
|
|
799 | /* |
|
|
800 | * make our pread/pwrite safe against themselves, but not against |
|
|
801 | * normal read/write by using a mutex. slows down execution a lot, |
|
|
802 | * but that's your problem, not mine. |
|
|
803 | */ |
|
|
804 | static mutex_t preadwritelock = MUTEX_INIT; |
|
|
805 | |
|
|
806 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
|
|
807 | { |
|
|
808 | ssize_t res; |
|
|
809 | off_t ooffset; |
|
|
810 | |
|
|
811 | LOCK (preadwritelock); |
|
|
812 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
813 | lseek (fd, offset, SEEK_SET); |
|
|
814 | res = read (fd, buf, count); |
|
|
815 | lseek (fd, ooffset, SEEK_SET); |
|
|
816 | UNLOCK (preadwritelock); |
|
|
817 | |
|
|
818 | return res; |
|
|
819 | } |
|
|
820 | |
|
|
821 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
|
|
822 | { |
|
|
823 | ssize_t res; |
|
|
824 | off_t ooffset; |
|
|
825 | |
|
|
826 | LOCK (preadwritelock); |
|
|
827 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
828 | lseek (fd, offset, SEEK_SET); |
|
|
829 | res = write (fd, buf, count); |
|
|
830 | lseek (fd, offset, SEEK_SET); |
|
|
831 | UNLOCK (preadwritelock); |
|
|
832 | |
|
|
833 | return res; |
|
|
834 | } |
|
|
835 | #endif |
|
|
836 | |
|
|
837 | #if !HAVE_FDATASYNC |
|
|
838 | # define fdatasync fsync |
|
|
839 | #endif |
|
|
840 | |
|
|
841 | #if !HAVE_READAHEAD |
|
|
842 | # define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) |
|
|
843 | |
|
|
844 | static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) |
|
|
845 | { |
|
|
846 | dBUF; |
|
|
847 | |
|
|
848 | while (count > 0) |
|
|
849 | { |
|
|
850 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
|
|
851 | |
|
|
852 | pread (fd, aio_buf, len, offset); |
|
|
853 | offset += len; |
|
|
854 | count -= len; |
|
|
855 | } |
|
|
856 | |
|
|
857 | errno = 0; |
|
|
858 | } |
|
|
859 | |
|
|
860 | #endif |
|
|
861 | |
|
|
862 | #if !HAVE_READDIR_R |
|
|
863 | # define readdir_r aio_readdir_r |
|
|
864 | |
|
|
865 | static mutex_t readdirlock = MUTEX_INIT; |
|
|
866 | |
|
|
867 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
|
|
868 | { |
|
|
869 | struct dirent *e; |
|
|
870 | int errorno; |
|
|
871 | |
|
|
872 | LOCK (readdirlock); |
|
|
873 | |
|
|
874 | e = readdir (dirp); |
|
|
875 | errorno = errno; |
|
|
876 | |
|
|
877 | if (e) |
|
|
878 | { |
|
|
879 | *res = ent; |
|
|
880 | strcpy (ent->d_name, e->d_name); |
|
|
881 | } |
|
|
882 | else |
|
|
883 | *res = 0; |
|
|
884 | |
|
|
885 | UNLOCK (readdirlock); |
|
|
886 | |
|
|
887 | errno = errorno; |
|
|
888 | return e ? 0 : -1; |
|
|
889 | } |
|
|
890 | #endif |
|
|
891 | |
|
|
892 | /* sendfile always needs emulation */ |
|
|
893 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) |
|
|
894 | { |
|
|
895 | ssize_t res; |
|
|
896 | |
|
|
897 | if (!count) |
|
|
898 | return 0; |
|
|
899 | |
|
|
900 | #if HAVE_SENDFILE |
|
|
901 | # if __linux |
|
|
902 | res = sendfile (ofd, ifd, &offset, count); |
|
|
903 | |
|
|
904 | # elif __freebsd |
|
|
905 | /* |
|
|
906 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
|
|
907 | * wasted on making it similar to other I/O functions. |
|
|
908 | */ |
|
|
909 | { |
|
|
910 | off_t sbytes; |
|
|
911 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
|
|
912 | |
|
|
913 | if (res < 0 && sbytes) |
|
|
914 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
|
|
915 | res = sbytes; |
|
|
916 | } |
|
|
917 | |
|
|
918 | # elif __hpux |
|
|
919 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
|
|
920 | |
|
|
921 | # elif __solaris |
|
|
922 | { |
|
|
923 | struct sendfilevec vec; |
|
|
924 | size_t sbytes; |
|
|
925 | |
|
|
926 | vec.sfv_fd = ifd; |
|
|
927 | vec.sfv_flag = 0; |
|
|
928 | vec.sfv_off = offset; |
|
|
929 | vec.sfv_len = count; |
|
|
930 | |
|
|
931 | res = sendfilev (ofd, &vec, 1, &sbytes); |
|
|
932 | |
|
|
933 | if (res < 0 && sbytes) |
|
|
934 | res = sbytes; |
|
|
935 | } |
|
|
936 | |
|
|
937 | # endif |
|
|
938 | #else |
|
|
939 | res = -1; |
|
|
940 | errno = ENOSYS; |
|
|
941 | #endif |
|
|
942 | |
|
|
943 | if (res < 0 |
|
|
944 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
945 | #if __solaris |
|
|
946 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
|
|
947 | #endif |
|
|
948 | ) |
|
|
949 | ) |
|
|
950 | { |
|
|
951 | /* emulate sendfile. this is a major pain in the ass */ |
|
|
952 | dBUF; |
|
|
953 | |
|
|
954 | res = 0; |
|
|
955 | |
|
|
956 | while (count) |
|
|
957 | { |
|
|
958 | ssize_t cnt; |
|
|
959 | |
|
|
960 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
|
|
961 | |
|
|
962 | if (cnt <= 0) |
|
|
963 | { |
|
|
964 | if (cnt && !res) res = -1; |
|
|
965 | break; |
|
|
966 | } |
|
|
967 | |
|
|
968 | cnt = write (ofd, aio_buf, cnt); |
|
|
969 | |
|
|
970 | if (cnt <= 0) |
|
|
971 | { |
|
|
972 | if (cnt && !res) res = -1; |
|
|
973 | break; |
|
|
974 | } |
|
|
975 | |
|
|
976 | offset += cnt; |
|
|
977 | res += cnt; |
|
|
978 | count -= cnt; |
|
|
979 | } |
|
|
980 | } |
|
|
981 | |
|
|
982 | return res; |
|
|
983 | } |
|
|
984 | |
|
|
985 | /* read a full directory */ |
|
|
986 | static void scandir_ (aio_req req, worker *self) |
|
|
987 | { |
|
|
988 | DIR *dirp; |
|
|
989 | union |
|
|
990 | { |
|
|
991 | struct dirent d; |
|
|
992 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
|
|
993 | } *u; |
|
|
994 | struct dirent *entp; |
|
|
995 | char *name, *names; |
|
|
996 | int memlen = 4096; |
|
|
997 | int memofs = 0; |
|
|
998 | int res = 0; |
|
|
999 | int errorno; |
|
|
1000 | |
|
|
1001 | LOCK (wrklock); |
|
|
1002 | self->dirp = dirp = opendir (req->ptr1); |
|
|
1003 | self->dbuf = u = malloc (sizeof (*u)); |
|
|
1004 | req->flags |= FLAG_PTR2_FREE; |
|
|
1005 | req->ptr2 = names = malloc (memlen); |
|
|
1006 | UNLOCK (wrklock); |
|
|
1007 | |
|
|
1008 | if (dirp && u && names) |
|
|
1009 | for (;;) |
|
|
1010 | { |
|
|
1011 | errno = 0; |
|
|
1012 | readdir_r (dirp, &u->d, &entp); |
|
|
1013 | |
|
|
1014 | if (!entp) |
|
|
1015 | break; |
|
|
1016 | |
|
|
1017 | name = entp->d_name; |
|
|
1018 | |
|
|
1019 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
|
|
1020 | { |
|
|
1021 | int len = strlen (name) + 1; |
|
|
1022 | |
|
|
1023 | res++; |
|
|
1024 | |
|
|
1025 | while (memofs + len > memlen) |
|
|
1026 | { |
|
|
1027 | memlen *= 2; |
|
|
1028 | LOCK (wrklock); |
|
|
1029 | req->ptr2 = names = realloc (names, memlen); |
|
|
1030 | UNLOCK (wrklock); |
|
|
1031 | |
|
|
1032 | if (!names) |
|
|
1033 | break; |
|
|
1034 | } |
|
|
1035 | |
|
|
1036 | memcpy (names + memofs, name, len); |
|
|
1037 | memofs += len; |
|
|
1038 | } |
|
|
1039 | } |
|
|
1040 | |
|
|
1041 | if (errno) |
|
|
1042 | res = -1; |
|
|
1043 | |
|
|
1044 | req->result = res; |
|
|
1045 | } |
|
|
1046 | |
|
|
1047 | /*****************************************************************************/ |
|
|
1048 | |
|
|
1049 | static void *aio_proc (void *thr_arg) |
|
|
1050 | { |
|
|
1051 | aio_req req; |
|
|
1052 | struct timespec ts; |
|
|
1053 | worker *self = (worker *)thr_arg; |
|
|
1054 | |
|
|
1055 | /* try to distribute timeouts somewhat evenly */ |
|
|
1056 | ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL) |
|
|
1057 | * (1000000000UL / 1024UL); |
|
|
1058 | |
|
|
1059 | for (;;) |
|
|
1060 | { |
|
|
1061 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
|
|
1062 | |
|
|
1063 | LOCK (reqlock); |
|
|
1064 | |
|
|
1065 | for (;;) |
|
|
1066 | { |
|
|
1067 | self->req = req = reqq_shift (&req_queue); |
254 | |
1068 | |
255 | if (req) |
1069 | if (req) |
256 | break; |
1070 | break; |
257 | |
1071 | |
258 | pthread_cond_wait (&reqwait, &reqlock); |
1072 | ++idle; |
|
|
1073 | |
|
|
1074 | if (COND_TIMEDWAIT (reqwait, reqlock, ts) |
|
|
1075 | == ETIMEDOUT) |
|
|
1076 | { |
|
|
1077 | if (idle > max_idle) |
|
|
1078 | { |
|
|
1079 | --idle; |
|
|
1080 | UNLOCK (reqlock); |
|
|
1081 | LOCK (wrklock); |
|
|
1082 | --started; |
|
|
1083 | UNLOCK (wrklock); |
|
|
1084 | goto quit; |
|
|
1085 | } |
|
|
1086 | |
|
|
1087 | /* we are allowed to idle, so do so without any timeout */ |
|
|
1088 | COND_WAIT (reqwait, reqlock); |
|
|
1089 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
|
|
1090 | } |
|
|
1091 | |
|
|
1092 | --idle; |
259 | } |
1093 | } |
260 | |
1094 | |
261 | pthread_mutex_unlock (&reqlock); |
1095 | --nready; |
|
|
1096 | |
|
|
1097 | UNLOCK (reqlock); |
262 | |
1098 | |
263 | errno = 0; /* strictly unnecessary */ |
1099 | errno = 0; /* strictly unnecessary */ |
264 | |
1100 | |
265 | type = req->type; |
1101 | if (!(req->flags & FLAG_CANCELLED)) |
266 | |
|
|
267 | switch (type) |
1102 | switch (req->type) |
|
|
1103 | { |
|
|
1104 | case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break; |
|
|
1105 | case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break; |
|
|
1106 | |
|
|
1107 | case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
|
|
1108 | case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break; |
|
|
1109 | |
|
|
1110 | case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break; |
|
|
1111 | case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break; |
|
|
1112 | case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break; |
|
|
1113 | |
|
|
1114 | case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break; |
|
|
1115 | case REQ_CLOSE: req->result = close (req->int1); break; |
|
|
1116 | case REQ_UNLINK: req->result = unlink (req->ptr1); break; |
|
|
1117 | case REQ_RMDIR: req->result = rmdir (req->ptr1); break; |
|
|
1118 | case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break; |
|
|
1119 | case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break; |
|
|
1120 | case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break; |
|
|
1121 | case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break; |
|
|
1122 | case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break; |
|
|
1123 | case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break; |
|
|
1124 | |
|
|
1125 | case REQ_FDATASYNC: req->result = fdatasync (req->int1); break; |
|
|
1126 | case REQ_FSYNC: req->result = fsync (req->int1); break; |
|
|
1127 | case REQ_READDIR: scandir_ (req, self); break; |
|
|
1128 | |
|
|
1129 | case REQ_BUSY: |
|
|
1130 | { |
|
|
1131 | struct timeval tv; |
|
|
1132 | |
|
|
1133 | tv.tv_sec = req->int1; |
|
|
1134 | tv.tv_usec = req->int2; |
|
|
1135 | |
|
|
1136 | req->result = select (0, 0, 0, 0, &tv); |
|
|
1137 | } |
|
|
1138 | |
|
|
1139 | case REQ_GROUP: |
|
|
1140 | case REQ_NOP: |
|
|
1141 | break; |
|
|
1142 | |
|
|
1143 | case REQ_QUIT: |
|
|
1144 | goto quit; |
|
|
1145 | |
|
|
1146 | default: |
|
|
1147 | req->result = ENOSYS; |
|
|
1148 | break; |
|
|
1149 | } |
|
|
1150 | |
|
|
1151 | req->errorno = errno; |
|
|
1152 | |
|
|
1153 | LOCK (reslock); |
|
|
1154 | |
|
|
1155 | ++npending; |
|
|
1156 | |
|
|
1157 | if (!reqq_push (&res_queue, req)) |
268 | { |
1158 | { |
269 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
|
|
270 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
|
|
271 | #if SYS_readahead |
|
|
272 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
|
|
273 | #else |
|
|
274 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
|
|
275 | #endif |
|
|
276 | |
|
|
277 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
|
|
278 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
|
|
279 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
|
|
280 | |
|
|
281 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
|
|
282 | case REQ_CLOSE: req->result = close (req->fd); break; |
|
|
283 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
|
|
284 | |
|
|
285 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
|
|
286 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
|
|
287 | |
|
|
288 | case REQ_QUIT: |
|
|
289 | break; |
|
|
290 | |
|
|
291 | default: |
|
|
292 | req->result = ENOSYS; |
|
|
293 | break; |
|
|
294 | } |
|
|
295 | |
|
|
296 | req->errorno = errno; |
|
|
297 | |
|
|
298 | pthread_mutex_lock (&reslock); |
|
|
299 | |
|
|
300 | req->next = 0; |
|
|
301 | |
|
|
302 | if (rese) |
|
|
303 | { |
|
|
304 | rese->next = req; |
|
|
305 | rese = req; |
|
|
306 | } |
|
|
307 | else |
|
|
308 | { |
|
|
309 | rese = ress = req; |
|
|
310 | |
|
|
311 | /* write a dummy byte to the pipe so fh becomes ready */ |
1159 | /* write a dummy byte to the pipe so fh becomes ready */ |
312 | write (respipe [1], &respipe, 1); |
1160 | write (respipe [1], &respipe, 1); |
|
|
1161 | |
|
|
1162 | /* optionally signal the main thread asynchronously */ |
|
|
1163 | if (main_sig) |
|
|
1164 | pthread_kill (main_tid, main_sig); |
313 | } |
1165 | } |
314 | |
1166 | |
315 | pthread_mutex_unlock (&reslock); |
1167 | self->req = 0; |
|
|
1168 | worker_clear (self); |
|
|
1169 | |
|
|
1170 | UNLOCK (reslock); |
316 | } |
1171 | } |
317 | while (type != REQ_QUIT); |
1172 | |
|
|
1173 | quit: |
|
|
1174 | LOCK (wrklock); |
|
|
1175 | worker_free (self); |
|
|
1176 | UNLOCK (wrklock); |
318 | |
1177 | |
319 | return 0; |
1178 | return 0; |
320 | } |
1179 | } |
321 | |
1180 | |
|
|
1181 | /*****************************************************************************/ |
|
|
1182 | |
|
|
1183 | static void atfork_prepare (void) |
|
|
1184 | { |
|
|
1185 | LOCK (wrklock); |
|
|
1186 | LOCK (reqlock); |
|
|
1187 | LOCK (reslock); |
|
|
1188 | #if !HAVE_PREADWRITE |
|
|
1189 | LOCK (preadwritelock); |
|
|
1190 | #endif |
|
|
1191 | #if !HAVE_READDIR_R |
|
|
1192 | LOCK (readdirlock); |
|
|
1193 | #endif |
|
|
1194 | } |
|
|
1195 | |
|
|
1196 | static void atfork_parent (void) |
|
|
1197 | { |
|
|
1198 | #if !HAVE_READDIR_R |
|
|
1199 | UNLOCK (readdirlock); |
|
|
1200 | #endif |
|
|
1201 | #if !HAVE_PREADWRITE |
|
|
1202 | UNLOCK (preadwritelock); |
|
|
1203 | #endif |
|
|
1204 | UNLOCK (reslock); |
|
|
1205 | UNLOCK (reqlock); |
|
|
1206 | UNLOCK (wrklock); |
|
|
1207 | } |
|
|
1208 | |
|
|
1209 | static void atfork_child (void) |
|
|
1210 | { |
|
|
1211 | aio_req prv; |
|
|
1212 | |
|
|
1213 | while (prv = reqq_shift (&req_queue)) |
|
|
1214 | req_free (prv); |
|
|
1215 | |
|
|
1216 | while (prv = reqq_shift (&res_queue)) |
|
|
1217 | req_free (prv); |
|
|
1218 | |
|
|
1219 | while (wrk_first.next != &wrk_first) |
|
|
1220 | { |
|
|
1221 | worker *wrk = wrk_first.next; |
|
|
1222 | |
|
|
1223 | if (wrk->req) |
|
|
1224 | req_free (wrk->req); |
|
|
1225 | |
|
|
1226 | worker_clear (wrk); |
|
|
1227 | worker_free (wrk); |
|
|
1228 | } |
|
|
1229 | |
|
|
1230 | started = 0; |
|
|
1231 | idle = 0; |
|
|
1232 | nreqs = 0; |
|
|
1233 | nready = 0; |
|
|
1234 | npending = 0; |
|
|
1235 | |
|
|
1236 | close (respipe [0]); |
|
|
1237 | close (respipe [1]); |
|
|
1238 | create_pipe (); |
|
|
1239 | |
|
|
1240 | atfork_parent (); |
|
|
1241 | } |
|
|
1242 | |
|
|
1243 | #define dREQ \ |
|
|
1244 | aio_req req; \ |
|
|
1245 | int req_pri = next_pri; \ |
|
|
1246 | next_pri = DEFAULT_PRI + PRI_BIAS; \ |
|
|
1247 | \ |
|
|
1248 | if (SvOK (callback) && !SvROK (callback)) \ |
|
|
1249 | croak ("callback must be undef or of reference type"); \ |
|
|
1250 | \ |
|
|
1251 | Newz (0, req, 1, aio_cb); \ |
|
|
1252 | if (!req) \ |
|
|
1253 | croak ("out of memory during aio_req allocation"); \ |
|
|
1254 | \ |
|
|
1255 | req->callback = newSVsv (callback); \ |
|
|
1256 | req->pri = req_pri |
|
|
1257 | |
|
|
1258 | #define REQ_SEND \ |
|
|
1259 | req_send (req); \ |
|
|
1260 | \ |
|
|
1261 | if (GIMME_V != G_VOID) \ |
|
|
1262 | XPUSHs (req_sv (req, AIO_REQ_KLASS)); |
|
|
1263 | |
322 | MODULE = IO::AIO PACKAGE = IO::AIO |
1264 | MODULE = IO::AIO PACKAGE = IO::AIO |
323 | |
1265 | |
324 | PROTOTYPES: ENABLE |
1266 | PROTOTYPES: ENABLE |
325 | |
1267 | |
326 | BOOT: |
1268 | BOOT: |
327 | { |
1269 | { |
328 | if (pipe (respipe)) |
1270 | HV *stash = gv_stashpv ("IO::AIO", 1); |
329 | croak ("unable to initialize result pipe"); |
|
|
330 | |
1271 | |
331 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
1272 | newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); |
332 | croak ("cannot set result pipe to nonblocking mode"); |
1273 | newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); |
|
|
1274 | newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); |
|
|
1275 | newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT)); |
|
|
1276 | newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC)); |
|
|
1277 | newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO)); |
|
|
1278 | newCONSTSUB (stash, "SIGIO", newSViv (SIGIO)); |
333 | |
1279 | |
334 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
1280 | create_pipe (); |
335 | croak ("cannot set result pipe to nonblocking mode"); |
1281 | ATFORK (atfork_prepare, atfork_parent, atfork_child); |
336 | } |
1282 | } |
337 | |
1283 | |
338 | void |
1284 | void |
339 | min_parallel(nthreads) |
1285 | max_poll_reqs (int nreqs) |
340 | int nthreads |
|
|
341 | PROTOTYPE: $ |
1286 | PROTOTYPE: $ |
342 | CODE: |
1287 | CODE: |
343 | while (nthreads > started) |
1288 | max_poll_reqs = nreqs; |
344 | start_thread (); |
|
|
345 | |
1289 | |
346 | void |
1290 | void |
347 | max_parallel(nthreads) |
1291 | max_poll_time (double nseconds) |
348 | int nthreads |
|
|
349 | PROTOTYPE: $ |
1292 | PROTOTYPE: $ |
350 | CODE: |
1293 | CODE: |
351 | { |
1294 | max_poll_time = nseconds * AIO_TICKS; |
352 | int cur = started; |
|
|
353 | while (cur > nthreads) |
|
|
354 | { |
|
|
355 | end_thread (); |
|
|
356 | cur--; |
|
|
357 | } |
|
|
358 | |
1295 | |
359 | while (started > nthreads) |
1296 | void |
360 | { |
1297 | min_parallel (int nthreads) |
361 | poll_wait (); |
1298 | PROTOTYPE: $ |
362 | poll_cb (); |
1299 | |
363 | } |
1300 | void |
364 | } |
1301 | max_parallel (int nthreads) |
|
|
1302 | PROTOTYPE: $ |
|
|
1303 | |
|
|
1304 | void |
|
|
1305 | max_idle (int nthreads) |
|
|
1306 | PROTOTYPE: $ |
|
|
1307 | CODE: |
|
|
1308 | set_max_idle (nthreads); |
365 | |
1309 | |
366 | int |
1310 | int |
367 | max_outstanding(nreqs) |
1311 | max_outstanding (int maxreqs) |
368 | int nreqs |
1312 | PROTOTYPE: $ |
369 | PROTOTYPE: $ |
|
|
370 | CODE: |
1313 | CODE: |
371 | RETVAL = max_outstanding; |
1314 | RETVAL = max_outstanding; |
372 | max_outstanding = nreqs; |
1315 | max_outstanding = maxreqs; |
|
|
1316 | OUTPUT: |
|
|
1317 | RETVAL |
373 | |
1318 | |
374 | void |
1319 | void |
375 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
1320 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
376 | SV * pathname |
1321 | SV8 * pathname |
377 | int flags |
1322 | int flags |
378 | int mode |
1323 | int mode |
379 | SV * callback |
1324 | SV * callback |
380 | PROTOTYPE: $$$;$ |
1325 | PROTOTYPE: $$$;$ |
381 | CODE: |
1326 | PPCODE: |
382 | { |
1327 | { |
383 | aio_req req; |
1328 | dREQ; |
384 | |
|
|
385 | Newz (0, req, 1, aio_cb); |
|
|
386 | |
|
|
387 | if (!req) |
|
|
388 | croak ("out of memory during aio_req allocation"); |
|
|
389 | |
1329 | |
390 | req->type = REQ_OPEN; |
1330 | req->type = REQ_OPEN; |
391 | req->data = newSVsv (pathname); |
1331 | req->sv1 = newSVsv (pathname); |
392 | req->dataptr = SvPV_nolen (req->data); |
1332 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
393 | req->fd = flags; |
1333 | req->int1 = flags; |
394 | req->mode = mode; |
1334 | req->mode = mode; |
395 | req->callback = SvREFCNT_inc (callback); |
|
|
396 | |
1335 | |
397 | send_req (req); |
1336 | REQ_SEND; |
398 | } |
1337 | } |
399 | |
1338 | |
400 | void |
1339 | void |
401 | aio_close(fh,callback=&PL_sv_undef) |
1340 | aio_close (fh,callback=&PL_sv_undef) |
402 | SV * fh |
1341 | SV * fh |
403 | SV * callback |
1342 | SV * callback |
404 | PROTOTYPE: $;$ |
1343 | PROTOTYPE: $;$ |
405 | ALIAS: |
1344 | ALIAS: |
406 | aio_close = REQ_CLOSE |
1345 | aio_close = REQ_CLOSE |
407 | aio_fsync = REQ_FSYNC |
1346 | aio_fsync = REQ_FSYNC |
408 | aio_fdatasync = REQ_FDATASYNC |
1347 | aio_fdatasync = REQ_FDATASYNC |
409 | CODE: |
1348 | PPCODE: |
410 | { |
1349 | { |
411 | aio_req req; |
1350 | dREQ; |
412 | |
|
|
413 | Newz (0, req, 1, aio_cb); |
|
|
414 | |
|
|
415 | if (!req) |
|
|
416 | croak ("out of memory during aio_req allocation"); |
|
|
417 | |
1351 | |
418 | req->type = ix; |
1352 | req->type = ix; |
419 | req->fh = newSVsv (fh); |
1353 | req->fh = newSVsv (fh); |
420 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
1354 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); |
421 | req->callback = SvREFCNT_inc (callback); |
|
|
422 | |
1355 | |
423 | send_req (req); |
1356 | REQ_SEND (req); |
424 | } |
1357 | } |
425 | |
1358 | |
426 | void |
1359 | void |
427 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
1360 | aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
428 | SV * fh |
1361 | SV * fh |
429 | UV offset |
1362 | UV offset |
430 | IV length |
1363 | UV length |
431 | SV * data |
1364 | SV8 * data |
432 | IV dataoffset |
1365 | UV dataoffset |
433 | SV * callback |
1366 | SV * callback |
434 | ALIAS: |
1367 | ALIAS: |
435 | aio_read = REQ_READ |
1368 | aio_read = REQ_READ |
436 | aio_write = REQ_WRITE |
1369 | aio_write = REQ_WRITE |
437 | PROTOTYPE: $$$$$;$ |
1370 | PROTOTYPE: $$$$$;$ |
438 | CODE: |
1371 | PPCODE: |
439 | { |
1372 | { |
440 | aio_req req; |
|
|
441 | STRLEN svlen; |
1373 | STRLEN svlen; |
442 | char *svptr = SvPV (data, svlen); |
1374 | char *svptr = SvPVbyte (data, svlen); |
443 | |
1375 | |
444 | SvUPGRADE (data, SVt_PV); |
1376 | SvUPGRADE (data, SVt_PV); |
445 | SvPOK_on (data); |
1377 | SvPOK_on (data); |
446 | |
1378 | |
447 | if (dataoffset < 0) |
1379 | if (dataoffset < 0) |
… | |
… | |
457 | length = svlen - dataoffset; |
1389 | length = svlen - dataoffset; |
458 | } |
1390 | } |
459 | else |
1391 | else |
460 | { |
1392 | { |
461 | /* read: grow scalar as necessary */ |
1393 | /* read: grow scalar as necessary */ |
462 | svptr = SvGROW (data, length + dataoffset); |
1394 | svptr = SvGROW (data, length + dataoffset + 1); |
463 | } |
1395 | } |
464 | |
1396 | |
465 | if (length < 0) |
1397 | if (length < 0) |
466 | croak ("length must not be negative"); |
1398 | croak ("length must not be negative"); |
467 | |
1399 | |
468 | Newz (0, req, 1, aio_cb); |
1400 | { |
|
|
1401 | dREQ; |
469 | |
1402 | |
470 | if (!req) |
|
|
471 | croak ("out of memory during aio_req allocation"); |
|
|
472 | |
|
|
473 | req->type = ix; |
1403 | req->type = ix; |
474 | req->fh = newSVsv (fh); |
1404 | req->fh = newSVsv (fh); |
475 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
1405 | req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
476 | : IoOFP (sv_2io (fh))); |
1406 | : IoOFP (sv_2io (fh))); |
477 | req->offset = offset; |
1407 | req->offs = offset; |
478 | req->length = length; |
1408 | req->size = length; |
479 | req->data = SvREFCNT_inc (data); |
1409 | req->sv1 = SvREFCNT_inc (data); |
480 | req->dataptr = (char *)svptr + dataoffset; |
1410 | req->ptr1 = (char *)svptr + dataoffset; |
481 | req->callback = SvREFCNT_inc (callback); |
1411 | req->stroffset = dataoffset; |
482 | |
1412 | |
483 | send_req (req); |
1413 | if (!SvREADONLY (data)) |
484 | } |
1414 | { |
|
|
1415 | SvREADONLY_on (data); |
|
|
1416 | req->flags |= FLAG_SV1_RO_OFF; |
|
|
1417 | } |
485 | |
1418 | |
|
|
1419 | REQ_SEND; |
|
|
1420 | } |
|
|
1421 | } |
|
|
1422 | |
486 | void |
1423 | void |
|
|
1424 | aio_readlink (path,callback=&PL_sv_undef) |
|
|
1425 | SV8 * path |
|
|
1426 | SV * callback |
|
|
1427 | PROTOTYPE: $$;$ |
|
|
1428 | PPCODE: |
|
|
1429 | { |
|
|
1430 | SV *data; |
|
|
1431 | dREQ; |
|
|
1432 | |
|
|
1433 | data = newSV (NAME_MAX); |
|
|
1434 | SvPOK_on (data); |
|
|
1435 | |
|
|
1436 | req->type = REQ_READLINK; |
|
|
1437 | req->fh = newSVsv (path); |
|
|
1438 | req->ptr2 = SvPVbyte_nolen (req->fh); |
|
|
1439 | req->sv1 = data; |
|
|
1440 | req->ptr1 = SvPVbyte_nolen (data); |
|
|
1441 | |
|
|
1442 | REQ_SEND; |
|
|
1443 | } |
|
|
1444 | |
|
|
1445 | void |
|
|
1446 | aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) |
|
|
1447 | SV * out_fh |
|
|
1448 | SV * in_fh |
|
|
1449 | UV in_offset |
|
|
1450 | UV length |
|
|
1451 | SV * callback |
|
|
1452 | PROTOTYPE: $$$$;$ |
|
|
1453 | PPCODE: |
|
|
1454 | { |
|
|
1455 | dREQ; |
|
|
1456 | |
|
|
1457 | req->type = REQ_SENDFILE; |
|
|
1458 | req->fh = newSVsv (out_fh); |
|
|
1459 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
|
|
1460 | req->sv2 = newSVsv (in_fh); |
|
|
1461 | req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
|
|
1462 | req->offs = in_offset; |
|
|
1463 | req->size = length; |
|
|
1464 | |
|
|
1465 | REQ_SEND; |
|
|
1466 | } |
|
|
1467 | |
|
|
1468 | void |
487 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
1469 | aio_readahead (fh,offset,length,callback=&PL_sv_undef) |
488 | SV * fh |
1470 | SV * fh |
489 | UV offset |
1471 | UV offset |
490 | IV length |
1472 | IV length |
491 | SV * callback |
1473 | SV * callback |
492 | PROTOTYPE: $$$;$ |
1474 | PROTOTYPE: $$$;$ |
493 | CODE: |
1475 | PPCODE: |
494 | { |
1476 | { |
495 | aio_req req; |
1477 | dREQ; |
496 | |
|
|
497 | if (length < 0) |
|
|
498 | croak ("length must not be negative"); |
|
|
499 | |
|
|
500 | Newz (0, req, 1, aio_cb); |
|
|
501 | |
|
|
502 | if (!req) |
|
|
503 | croak ("out of memory during aio_req allocation"); |
|
|
504 | |
1478 | |
505 | req->type = REQ_READAHEAD; |
1479 | req->type = REQ_READAHEAD; |
506 | req->fh = newSVsv (fh); |
1480 | req->fh = newSVsv (fh); |
507 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
1481 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); |
508 | req->offset = offset; |
1482 | req->offs = offset; |
509 | req->length = length; |
1483 | req->size = length; |
510 | req->callback = SvREFCNT_inc (callback); |
|
|
511 | |
1484 | |
512 | send_req (req); |
1485 | REQ_SEND; |
513 | } |
1486 | } |
514 | |
1487 | |
515 | void |
1488 | void |
516 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
1489 | aio_stat (fh_or_path,callback=&PL_sv_undef) |
517 | SV * fh_or_path |
1490 | SV8 * fh_or_path |
518 | SV * callback |
1491 | SV * callback |
519 | ALIAS: |
1492 | ALIAS: |
520 | aio_stat = REQ_STAT |
1493 | aio_stat = REQ_STAT |
521 | aio_lstat = REQ_LSTAT |
1494 | aio_lstat = REQ_LSTAT |
522 | CODE: |
1495 | PPCODE: |
523 | { |
1496 | { |
524 | aio_req req; |
1497 | dREQ; |
525 | |
1498 | |
526 | Newz (0, req, 1, aio_cb); |
1499 | req->ptr2 = malloc (sizeof (Stat_t)); |
527 | |
|
|
528 | if (!req) |
1500 | if (!req->ptr2) |
529 | croak ("out of memory during aio_req allocation"); |
1501 | { |
530 | |
1502 | req_free (req); |
531 | New (0, req->statdata, 1, Stat_t); |
|
|
532 | |
|
|
533 | if (!req->statdata) |
|
|
534 | croak ("out of memory during aio_req->statdata allocation"); |
1503 | croak ("out of memory during aio_stat statdata allocation"); |
|
|
1504 | } |
|
|
1505 | |
|
|
1506 | req->flags |= FLAG_PTR2_FREE; |
535 | |
1507 | |
536 | if (SvPOK (fh_or_path)) |
1508 | if (SvPOK (fh_or_path)) |
537 | { |
1509 | { |
538 | req->type = ix; |
1510 | req->type = ix; |
539 | req->data = newSVsv (fh_or_path); |
1511 | req->sv1 = newSVsv (fh_or_path); |
540 | req->dataptr = SvPV_nolen (req->data); |
1512 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
541 | } |
1513 | } |
542 | else |
1514 | else |
543 | { |
1515 | { |
544 | req->type = REQ_FSTAT; |
1516 | req->type = REQ_FSTAT; |
545 | req->fh = newSVsv (fh_or_path); |
1517 | req->fh = newSVsv (fh_or_path); |
546 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
1518 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
547 | } |
1519 | } |
548 | |
1520 | |
549 | req->callback = SvREFCNT_inc (callback); |
1521 | REQ_SEND; |
550 | |
|
|
551 | send_req (req); |
|
|
552 | } |
1522 | } |
553 | |
1523 | |
554 | void |
1524 | void |
555 | aio_unlink(pathname,callback=&PL_sv_undef) |
1525 | aio_unlink (pathname,callback=&PL_sv_undef) |
556 | SV * pathname |
1526 | SV8 * pathname |
557 | SV * callback |
1527 | SV * callback |
|
|
1528 | ALIAS: |
|
|
1529 | aio_unlink = REQ_UNLINK |
|
|
1530 | aio_rmdir = REQ_RMDIR |
|
|
1531 | aio_readdir = REQ_READDIR |
|
|
1532 | PPCODE: |
|
|
1533 | { |
|
|
1534 | dREQ; |
|
|
1535 | |
|
|
1536 | req->type = ix; |
|
|
1537 | req->sv1 = newSVsv (pathname); |
|
|
1538 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1539 | |
|
|
1540 | REQ_SEND; |
|
|
1541 | } |
|
|
1542 | |
|
|
1543 | void |
|
|
1544 | aio_mkdir (pathname,mode,callback=&PL_sv_undef) |
|
|
1545 | SV8 * pathname |
|
|
1546 | UV mode |
|
|
1547 | SV * callback |
|
|
1548 | PPCODE: |
|
|
1549 | { |
|
|
1550 | dREQ; |
|
|
1551 | |
|
|
1552 | req->type = REQ_MKDIR; |
|
|
1553 | req->sv1 = newSVsv (pathname); |
|
|
1554 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1555 | req->mode = mode; |
|
|
1556 | |
|
|
1557 | REQ_SEND; |
|
|
1558 | } |
|
|
1559 | |
|
|
1560 | void |
|
|
1561 | aio_link (oldpath,newpath,callback=&PL_sv_undef) |
|
|
1562 | SV8 * oldpath |
|
|
1563 | SV8 * newpath |
|
|
1564 | SV * callback |
|
|
1565 | ALIAS: |
|
|
1566 | aio_link = REQ_LINK |
|
|
1567 | aio_symlink = REQ_SYMLINK |
|
|
1568 | aio_rename = REQ_RENAME |
|
|
1569 | PPCODE: |
|
|
1570 | { |
|
|
1571 | dREQ; |
|
|
1572 | |
|
|
1573 | req->type = ix; |
|
|
1574 | req->fh = newSVsv (oldpath); |
|
|
1575 | req->ptr2 = SvPVbyte_nolen (req->fh); |
|
|
1576 | req->sv1 = newSVsv (newpath); |
|
|
1577 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1578 | |
|
|
1579 | REQ_SEND; |
|
|
1580 | } |
|
|
1581 | |
|
|
1582 | void |
|
|
1583 | aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) |
|
|
1584 | SV8 * pathname |
|
|
1585 | UV mode |
|
|
1586 | UV dev |
|
|
1587 | SV * callback |
|
|
1588 | PPCODE: |
|
|
1589 | { |
|
|
1590 | dREQ; |
|
|
1591 | |
|
|
1592 | req->type = REQ_MKNOD; |
|
|
1593 | req->sv1 = newSVsv (pathname); |
|
|
1594 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1595 | req->mode = (mode_t)mode; |
|
|
1596 | req->offs = dev; |
|
|
1597 | |
|
|
1598 | REQ_SEND; |
|
|
1599 | } |
|
|
1600 | |
|
|
1601 | void |
|
|
1602 | aio_busy (delay,callback=&PL_sv_undef) |
|
|
1603 | double delay |
|
|
1604 | SV * callback |
|
|
1605 | PPCODE: |
|
|
1606 | { |
|
|
1607 | dREQ; |
|
|
1608 | |
|
|
1609 | req->type = REQ_BUSY; |
|
|
1610 | req->int1 = delay < 0. ? 0 : delay; |
|
|
1611 | req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1); |
|
|
1612 | |
|
|
1613 | REQ_SEND; |
|
|
1614 | } |
|
|
1615 | |
|
|
1616 | void |
|
|
1617 | aio_group (callback=&PL_sv_undef) |
|
|
1618 | SV * callback |
|
|
1619 | PROTOTYPE: ;$ |
|
|
1620 | PPCODE: |
|
|
1621 | { |
|
|
1622 | dREQ; |
|
|
1623 | |
|
|
1624 | req->type = REQ_GROUP; |
|
|
1625 | |
|
|
1626 | req_send (req); |
|
|
1627 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
|
|
1628 | } |
|
|
1629 | |
|
|
1630 | void |
|
|
1631 | aio_nop (callback=&PL_sv_undef) |
|
|
1632 | SV * callback |
|
|
1633 | PPCODE: |
|
|
1634 | { |
|
|
1635 | dREQ; |
|
|
1636 | |
|
|
1637 | req->type = REQ_NOP; |
|
|
1638 | |
|
|
1639 | REQ_SEND; |
|
|
1640 | } |
|
|
1641 | |
|
|
1642 | int |
|
|
1643 | aioreq_pri (int pri = 0) |
|
|
1644 | PROTOTYPE: ;$ |
558 | CODE: |
1645 | CODE: |
559 | { |
1646 | RETVAL = next_pri - PRI_BIAS; |
560 | aio_req req; |
1647 | if (items > 0) |
561 | |
1648 | { |
562 | Newz (0, req, 1, aio_cb); |
1649 | if (pri < PRI_MIN) pri = PRI_MIN; |
563 | |
1650 | if (pri > PRI_MAX) pri = PRI_MAX; |
564 | if (!req) |
1651 | next_pri = pri + PRI_BIAS; |
565 | croak ("out of memory during aio_req allocation"); |
1652 | } |
566 | |
1653 | OUTPUT: |
567 | req->type = REQ_UNLINK; |
1654 | RETVAL |
568 | req->data = newSVsv (pathname); |
|
|
569 | req->dataptr = SvPV_nolen (req->data); |
|
|
570 | req->callback = SvREFCNT_inc (callback); |
|
|
571 | |
|
|
572 | send_req (req); |
|
|
573 | } |
|
|
574 | |
1655 | |
575 | void |
1656 | void |
|
|
1657 | aioreq_nice (int nice = 0) |
|
|
1658 | CODE: |
|
|
1659 | nice = next_pri - nice; |
|
|
1660 | if (nice < PRI_MIN) nice = PRI_MIN; |
|
|
1661 | if (nice > PRI_MAX) nice = PRI_MAX; |
|
|
1662 | next_pri = nice + PRI_BIAS; |
|
|
1663 | |
|
|
1664 | void |
576 | flush() |
1665 | flush () |
577 | PROTOTYPE: |
1666 | PROTOTYPE: |
578 | CODE: |
1667 | CODE: |
579 | while (nreqs) |
1668 | while (nreqs) |
580 | { |
1669 | { |
581 | poll_wait (); |
1670 | poll_wait (); |
582 | poll_cb (); |
1671 | poll_cb (); |
583 | } |
1672 | } |
584 | |
1673 | |
585 | void |
1674 | int |
586 | poll() |
1675 | poll() |
587 | PROTOTYPE: |
1676 | PROTOTYPE: |
588 | CODE: |
1677 | CODE: |
589 | if (nreqs) |
|
|
590 | { |
|
|
591 | poll_wait (); |
1678 | poll_wait (); |
592 | poll_cb (); |
1679 | RETVAL = poll_cb (); |
593 | } |
1680 | OUTPUT: |
|
|
1681 | RETVAL |
594 | |
1682 | |
595 | int |
1683 | int |
596 | poll_fileno() |
1684 | poll_fileno() |
597 | PROTOTYPE: |
1685 | PROTOTYPE: |
598 | CODE: |
1686 | CODE: |
… | |
… | |
610 | |
1698 | |
611 | void |
1699 | void |
612 | poll_wait() |
1700 | poll_wait() |
613 | PROTOTYPE: |
1701 | PROTOTYPE: |
614 | CODE: |
1702 | CODE: |
615 | if (nreqs) |
|
|
616 | poll_wait (); |
1703 | poll_wait (); |
|
|
1704 | |
|
|
1705 | void |
|
|
1706 | setsig (int signum = SIGIO) |
|
|
1707 | PROTOTYPE: ;$ |
|
|
1708 | CODE: |
|
|
1709 | { |
|
|
1710 | if (block_sig_level) |
|
|
1711 | croak ("cannot call IO::AIO::setsig from within aio_block/callback"); |
|
|
1712 | |
|
|
1713 | LOCK (reslock); |
|
|
1714 | main_tid = pthread_self (); |
|
|
1715 | main_sig = signum; |
|
|
1716 | UNLOCK (reslock); |
|
|
1717 | |
|
|
1718 | if (main_sig && npending) |
|
|
1719 | pthread_kill (main_tid, main_sig); |
|
|
1720 | } |
|
|
1721 | |
|
|
1722 | void |
|
|
1723 | aio_block (SV *cb) |
|
|
1724 | PROTOTYPE: & |
|
|
1725 | PPCODE: |
|
|
1726 | { |
|
|
1727 | int count; |
|
|
1728 | |
|
|
1729 | block_sig (); |
|
|
1730 | PUSHMARK (SP); |
|
|
1731 | PUTBACK; |
|
|
1732 | count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL); |
|
|
1733 | SPAGAIN; |
|
|
1734 | unblock_sig (); |
|
|
1735 | |
|
|
1736 | if (SvTRUE (ERRSV)) |
|
|
1737 | croak (0); |
|
|
1738 | |
|
|
1739 | XSRETURN (count); |
|
|
1740 | } |
617 | |
1741 | |
618 | int |
1742 | int |
619 | nreqs() |
1743 | nreqs() |
620 | PROTOTYPE: |
1744 | PROTOTYPE: |
621 | CODE: |
1745 | CODE: |
622 | RETVAL = nreqs; |
1746 | RETVAL = nreqs; |
623 | OUTPUT: |
1747 | OUTPUT: |
624 | RETVAL |
1748 | RETVAL |
625 | |
1749 | |
|
|
1750 | int |
|
|
1751 | nready() |
|
|
1752 | PROTOTYPE: |
|
|
1753 | CODE: |
|
|
1754 | RETVAL = get_nready (); |
|
|
1755 | OUTPUT: |
|
|
1756 | RETVAL |
|
|
1757 | |
|
|
1758 | int |
|
|
1759 | npending() |
|
|
1760 | PROTOTYPE: |
|
|
1761 | CODE: |
|
|
1762 | RETVAL = get_npending (); |
|
|
1763 | OUTPUT: |
|
|
1764 | RETVAL |
|
|
1765 | |
|
|
1766 | int |
|
|
1767 | nthreads() |
|
|
1768 | PROTOTYPE: |
|
|
1769 | CODE: |
|
|
1770 | if (WORDACCESS_UNSAFE) LOCK (wrklock); |
|
|
1771 | RETVAL = started; |
|
|
1772 | if (WORDACCESS_UNSAFE) UNLOCK (wrklock); |
|
|
1773 | OUTPUT: |
|
|
1774 | RETVAL |
|
|
1775 | |
|
|
1776 | PROTOTYPES: DISABLE |
|
|
1777 | |
|
|
1778 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
|
|
1779 | |
|
|
1780 | void |
|
|
1781 | cancel (aio_req_ornot req) |
|
|
1782 | CODE: |
|
|
1783 | req_cancel (req); |
|
|
1784 | |
|
|
1785 | void |
|
|
1786 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
|
|
1787 | CODE: |
|
|
1788 | SvREFCNT_dec (req->callback); |
|
|
1789 | req->callback = newSVsv (callback); |
|
|
1790 | |
|
|
1791 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
|
|
1792 | |
|
|
1793 | void |
|
|
1794 | add (aio_req grp, ...) |
|
|
1795 | PPCODE: |
|
|
1796 | { |
|
|
1797 | int i; |
|
|
1798 | aio_req req; |
|
|
1799 | |
|
|
1800 | if (main_sig && !block_sig_level) |
|
|
1801 | croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use"); |
|
|
1802 | |
|
|
1803 | if (grp->int1 == 2) |
|
|
1804 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
|
|
1805 | |
|
|
1806 | for (i = 1; i < items; ++i ) |
|
|
1807 | { |
|
|
1808 | if (GIMME_V != G_VOID) |
|
|
1809 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
|
|
1810 | |
|
|
1811 | req = SvAIO_REQ (ST (i)); |
|
|
1812 | |
|
|
1813 | if (req) |
|
|
1814 | { |
|
|
1815 | ++grp->size; |
|
|
1816 | req->grp = grp; |
|
|
1817 | |
|
|
1818 | req->grp_prev = 0; |
|
|
1819 | req->grp_next = grp->grp_first; |
|
|
1820 | |
|
|
1821 | if (grp->grp_first) |
|
|
1822 | grp->grp_first->grp_prev = req; |
|
|
1823 | |
|
|
1824 | grp->grp_first = req; |
|
|
1825 | } |
|
|
1826 | } |
|
|
1827 | } |
|
|
1828 | |
|
|
1829 | void |
|
|
1830 | cancel_subs (aio_req_ornot req) |
|
|
1831 | CODE: |
|
|
1832 | req_cancel_subs (req); |
|
|
1833 | |
|
|
1834 | void |
|
|
1835 | result (aio_req grp, ...) |
|
|
1836 | CODE: |
|
|
1837 | { |
|
|
1838 | int i; |
|
|
1839 | AV *av; |
|
|
1840 | |
|
|
1841 | grp->errorno = errno; |
|
|
1842 | |
|
|
1843 | av = newAV (); |
|
|
1844 | |
|
|
1845 | for (i = 1; i < items; ++i ) |
|
|
1846 | av_push (av, newSVsv (ST (i))); |
|
|
1847 | |
|
|
1848 | SvREFCNT_dec (grp->sv1); |
|
|
1849 | grp->sv1 = (SV *)av; |
|
|
1850 | } |
|
|
1851 | |
|
|
1852 | void |
|
|
1853 | errno (aio_req grp, int errorno = errno) |
|
|
1854 | CODE: |
|
|
1855 | grp->errorno = errorno; |
|
|
1856 | |
|
|
1857 | void |
|
|
1858 | limit (aio_req grp, int limit) |
|
|
1859 | CODE: |
|
|
1860 | grp->int2 = limit; |
|
|
1861 | aio_grp_feed (grp); |
|
|
1862 | |
|
|
1863 | void |
|
|
1864 | feed (aio_req grp, SV *callback=&PL_sv_undef) |
|
|
1865 | CODE: |
|
|
1866 | { |
|
|
1867 | SvREFCNT_dec (grp->sv2); |
|
|
1868 | grp->sv2 = newSVsv (callback); |
|
|
1869 | |
|
|
1870 | if (grp->int2 <= 0) |
|
|
1871 | grp->int2 = 2; |
|
|
1872 | |
|
|
1873 | aio_grp_feed (grp); |
|
|
1874 | } |
|
|
1875 | |