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1 | /* solaris */ |
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2 | #define _POSIX_PTHREAD_SEMANTICS 1 |
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3 | |
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4 | #if __linux && !defined(_GNU_SOURCE) |
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5 | # define _GNU_SOURCE |
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6 | #endif |
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7 | |
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8 | /* just in case */ |
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9 | #define _REENTRANT 1 |
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10 | |
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11 | #include <errno.h> |
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12 | |
1 | #include "EXTERN.h" |
13 | #include "EXTERN.h" |
2 | #include "perl.h" |
14 | #include "perl.h" |
3 | #include "XSUB.h" |
15 | #include "XSUB.h" |
4 | |
16 | |
5 | #include "autoconf/config.h" |
17 | #include "autoconf/config.h" |
6 | |
18 | |
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19 | #include <pthread.h> |
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20 | |
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21 | #include <stddef.h> |
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22 | #include <stdlib.h> |
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23 | #include <errno.h> |
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24 | #include <sys/time.h> |
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25 | #include <sys/select.h> |
7 | #include <sys/types.h> |
26 | #include <sys/types.h> |
8 | #include <sys/stat.h> |
27 | #include <sys/stat.h> |
9 | |
28 | #include <limits.h> |
10 | #include <unistd.h> |
29 | #include <unistd.h> |
11 | #include <fcntl.h> |
30 | #include <fcntl.h> |
12 | #include <signal.h> |
31 | #include <signal.h> |
13 | #include <sched.h> |
32 | #include <sched.h> |
14 | |
33 | |
15 | #include <pthread.h> |
34 | #if HAVE_SENDFILE |
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35 | # if __linux |
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36 | # include <sys/sendfile.h> |
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37 | # elif __freebsd |
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38 | # include <sys/socket.h> |
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39 | # include <sys/uio.h> |
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40 | # elif __hpux |
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41 | # include <sys/socket.h> |
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42 | # elif __solaris /* not yet */ |
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43 | # include <sys/sendfile.h> |
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44 | # else |
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45 | # error sendfile support requested but not available |
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46 | # endif |
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47 | #endif |
16 | |
48 | |
17 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
49 | /* number of seconds after which idle threads exit */ |
18 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
50 | #define IDLE_TIMEOUT 10 |
19 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
51 | |
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52 | /* used for struct dirent, AIX doesn't provide it */ |
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53 | #ifndef NAME_MAX |
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54 | # define NAME_MAX 4096 |
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55 | #endif |
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56 | |
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57 | #ifndef PTHREAD_STACK_MIN |
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58 | /* care for broken platforms, e.g. windows */ |
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59 | # define PTHREAD_STACK_MIN 16384 |
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60 | #endif |
20 | |
61 | |
21 | #if __ia64 |
62 | #if __ia64 |
22 | # define STACKSIZE 65536 |
63 | # define STACKSIZE 65536 |
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64 | #elif __i386 || __x86_64 /* 16k is unreasonably high :( */ |
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65 | # define STACKSIZE PTHREAD_STACK_MIN |
23 | #else |
66 | #else |
24 | # define STACKSIZE 4096 |
67 | # define STACKSIZE 16384 |
25 | #endif |
68 | #endif |
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69 | |
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70 | /* wether word reads are potentially non-atomic. |
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71 | * this is conservatice, likely most arches this runs |
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72 | * on have atomic word read/writes. |
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73 | */ |
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74 | #ifndef WORDACCESS_UNSAFE |
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75 | # if __i386 || __x86_64 |
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76 | # define WORDACCESS_UNSAFE 0 |
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77 | # else |
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78 | # define WORDACCESS_UNSAFE 1 |
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79 | # endif |
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80 | #endif |
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81 | |
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82 | /* buffer size for various temporary buffers */ |
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83 | #define AIO_BUFSIZE 65536 |
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84 | |
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85 | #define dBUF \ |
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86 | char *aio_buf; \ |
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87 | LOCK (wrklock); \ |
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88 | self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ |
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89 | UNLOCK (wrklock); \ |
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90 | if (!aio_buf) \ |
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91 | return -1; |
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92 | |
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93 | typedef SV SV8; /* byte-sv, used for argument-checking */ |
26 | |
94 | |
27 | enum { |
95 | enum { |
28 | REQ_QUIT, |
96 | REQ_QUIT, |
29 | REQ_OPEN, REQ_CLOSE, |
97 | REQ_OPEN, REQ_CLOSE, |
30 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
98 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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99 | REQ_SENDFILE, |
31 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
100 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
32 | REQ_FSYNC, REQ_FDATASYNC, |
101 | REQ_FSYNC, REQ_FDATASYNC, |
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102 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
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103 | REQ_MKNOD, REQ_READDIR, |
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104 | REQ_LINK, REQ_SYMLINK, REQ_READLINK, |
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105 | REQ_GROUP, REQ_NOP, |
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106 | REQ_BUSY, |
33 | }; |
107 | }; |
34 | |
108 | |
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109 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
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110 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
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111 | |
35 | typedef struct aio_cb { |
112 | typedef struct aio_cb |
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113 | { |
36 | struct aio_cb *volatile next; |
114 | struct aio_cb *volatile next; |
37 | |
115 | |
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116 | SV *callback, *fh; |
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117 | SV *sv1, *sv2; |
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118 | void *ptr1, *ptr2; |
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119 | off_t offs; |
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120 | size_t size; |
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121 | ssize_t result; |
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122 | |
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123 | STRLEN stroffset; |
38 | int type; |
124 | int type; |
39 | |
125 | int int1, int2; |
40 | int fd; |
126 | 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 */ |
127 | 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 | |
128 | |
50 | Stat_t *statdata; |
129 | unsigned char flags; |
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130 | unsigned char pri; |
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131 | |
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132 | SV *self; /* the perl counterpart of this request, if any */ |
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133 | struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; |
51 | } aio_cb; |
134 | } aio_cb; |
52 | |
135 | |
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136 | enum { |
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137 | FLAG_CANCELLED = 0x01, /* request was cancelled */ |
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138 | FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */ |
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139 | FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */ |
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140 | }; |
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141 | |
53 | typedef aio_cb *aio_req; |
142 | typedef aio_cb *aio_req; |
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143 | typedef aio_cb *aio_req_ornot; |
54 | |
144 | |
55 | static int started; |
145 | enum { |
56 | static volatile int nreqs; |
146 | PRI_MIN = -4, |
57 | static int max_outstanding = 1<<30; |
147 | PRI_MAX = 4, |
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148 | |
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149 | DEFAULT_PRI = 0, |
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150 | PRI_BIAS = -PRI_MIN, |
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151 | NUM_PRI = PRI_MAX + PRI_BIAS + 1, |
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152 | }; |
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153 | |
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154 | #define AIO_TICKS ((1000000 + 1023) >> 10) |
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155 | |
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156 | static unsigned int max_poll_time = 0; |
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157 | static unsigned int max_poll_reqs = 0; |
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158 | |
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159 | /* calculcate time difference in ~1/AIO_TICKS of a second */ |
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160 | static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
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161 | { |
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162 | return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS |
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163 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
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164 | } |
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165 | |
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166 | static pthread_t main_tid; |
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167 | static int main_sig; |
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168 | static int block_sig_level; |
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169 | |
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170 | void block_sig () |
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171 | { |
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172 | sigset_t ss; |
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173 | |
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174 | if (block_sig_level++) |
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175 | return; |
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176 | |
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177 | if (!main_sig) |
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178 | return; |
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179 | |
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180 | sigemptyset (&ss); |
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181 | sigaddset (&ss, main_sig); |
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182 | pthread_sigmask (SIG_BLOCK, &ss, 0); |
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183 | } |
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184 | |
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185 | void unblock_sig () |
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186 | { |
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187 | sigset_t ss; |
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188 | |
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189 | if (--block_sig_level) |
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190 | return; |
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191 | |
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192 | if (!main_sig) |
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193 | return; |
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194 | |
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195 | sigemptyset (&ss); |
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196 | sigaddset (&ss, main_sig); |
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197 | pthread_sigmask (SIG_UNBLOCK, &ss, 0); |
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198 | } |
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199 | |
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200 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
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201 | |
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202 | static unsigned int started, idle, wanted; |
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203 | |
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204 | #if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
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205 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
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206 | #else |
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207 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
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208 | #endif |
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209 | |
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210 | #define LOCK(mutex) pthread_mutex_lock (&(mutex)) |
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211 | #define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) |
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212 | |
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213 | /* worker threads management */ |
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214 | static pthread_mutex_t wrklock = AIO_MUTEX_INIT; |
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215 | |
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216 | typedef struct worker { |
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217 | /* locked by wrklock */ |
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218 | struct worker *prev, *next; |
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219 | |
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220 | pthread_t tid; |
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221 | |
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222 | /* locked by reslock, reqlock or wrklock */ |
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223 | aio_req req; /* currently processed request */ |
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224 | void *dbuf; |
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225 | DIR *dirp; |
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226 | } worker; |
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227 | |
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228 | static worker wrk_first = { &wrk_first, &wrk_first, 0 }; |
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229 | |
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230 | static void worker_clear (worker *wrk) |
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231 | { |
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232 | if (wrk->dirp) |
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233 | { |
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234 | closedir (wrk->dirp); |
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235 | wrk->dirp = 0; |
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236 | } |
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237 | |
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238 | if (wrk->dbuf) |
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239 | { |
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240 | free (wrk->dbuf); |
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241 | wrk->dbuf = 0; |
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242 | } |
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243 | } |
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244 | |
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245 | static void worker_free (worker *wrk) |
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246 | { |
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247 | wrk->next->prev = wrk->prev; |
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248 | wrk->prev->next = wrk->next; |
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249 | |
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250 | free (wrk); |
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251 | } |
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252 | |
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253 | static volatile unsigned int nreqs, nready, npending; |
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254 | static volatile unsigned int max_idle = 4; |
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255 | static volatile unsigned int max_outstanding = 0xffffffff; |
58 | static int respipe [2]; |
256 | static int respipe [2]; |
59 | |
257 | |
60 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
258 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
61 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
259 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
62 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
260 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
63 | |
261 | |
64 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
262 | #if WORDACCESS_UNSAFE |
65 | static volatile aio_req ress, rese; /* queue start, queue end */ |
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66 | |
263 | |
67 | static void |
264 | static unsigned int get_nready () |
68 | poll_wait () |
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69 | { |
265 | { |
70 | if (nreqs && !ress) |
266 | unsigned int retval; |
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267 | |
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268 | LOCK (reqlock); |
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269 | retval = nready; |
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270 | UNLOCK (reqlock); |
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271 | |
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272 | return retval; |
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273 | } |
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274 | |
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275 | static unsigned int get_npending () |
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276 | { |
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277 | unsigned int retval; |
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278 | |
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279 | LOCK (reslock); |
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280 | retval = npending; |
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281 | UNLOCK (reslock); |
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282 | |
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283 | return retval; |
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284 | } |
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285 | |
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286 | static unsigned int get_nthreads () |
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287 | { |
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288 | unsigned int retval; |
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289 | |
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290 | LOCK (wrklock); |
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291 | retval = started; |
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292 | UNLOCK (wrklock); |
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293 | |
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294 | return retval; |
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295 | } |
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296 | |
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297 | #else |
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298 | |
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299 | # define get_nready() nready |
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300 | # define get_npending() npending |
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301 | # define get_nthreads() started |
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302 | |
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303 | #endif |
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304 | |
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305 | /* |
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306 | * a somewhat faster data structure might be nice, but |
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307 | * with 8 priorities this actually needs <20 insns |
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308 | * per shift, the most expensive operation. |
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309 | */ |
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310 | typedef struct { |
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311 | aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */ |
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312 | int size; |
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313 | } reqq; |
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314 | |
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315 | static reqq req_queue; |
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316 | static reqq res_queue; |
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317 | |
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318 | int reqq_push (reqq *q, aio_req req) |
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319 | { |
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320 | int pri = req->pri; |
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321 | req->next = 0; |
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322 | |
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323 | if (q->qe[pri]) |
71 | { |
324 | { |
72 | fd_set rfd; |
325 | q->qe[pri]->next = req; |
73 | FD_ZERO(&rfd); |
326 | 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 | } |
327 | } |
78 | } |
328 | else |
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329 | q->qe[pri] = q->qs[pri] = req; |
79 | |
330 | |
80 | static int |
331 | return q->size++; |
81 | poll_cb () |
332 | } |
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333 | |
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334 | aio_req reqq_shift (reqq *q) |
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335 | { |
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336 | int pri; |
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337 | |
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338 | if (!q->size) |
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339 | return 0; |
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340 | |
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341 | --q->size; |
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342 | |
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343 | for (pri = NUM_PRI; pri--; ) |
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344 | { |
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345 | aio_req req = q->qs[pri]; |
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346 | |
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347 | if (req) |
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348 | { |
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349 | if (!(q->qs[pri] = req->next)) |
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350 | q->qe[pri] = 0; |
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351 | |
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352 | return req; |
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353 | } |
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354 | } |
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355 | |
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356 | abort (); |
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357 | } |
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358 | |
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359 | static int poll_cb (); |
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360 | static int req_invoke (aio_req req); |
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361 | static void req_free (aio_req req); |
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362 | static void req_cancel (aio_req req); |
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363 | |
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364 | /* must be called at most once */ |
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365 | static SV *req_sv (aio_req req, const char *klass) |
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366 | { |
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367 | if (!req->self) |
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368 | { |
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369 | req->self = (SV *)newHV (); |
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370 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
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371 | } |
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372 | |
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373 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
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374 | } |
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375 | |
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376 | static aio_req SvAIO_REQ (SV *sv) |
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377 | { |
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378 | MAGIC *mg; |
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379 | |
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380 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
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381 | croak ("object of class " AIO_REQ_KLASS " expected"); |
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382 | |
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383 | mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
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384 | |
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385 | return mg ? (aio_req)mg->mg_ptr : 0; |
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386 | } |
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387 | |
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388 | static void aio_grp_feed (aio_req grp) |
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389 | { |
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390 | block_sig (); |
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391 | |
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392 | while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) |
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393 | { |
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394 | int old_len = grp->size; |
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395 | |
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396 | if (grp->sv2 && SvOK (grp->sv2)) |
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397 | { |
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398 | dSP; |
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399 | |
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400 | ENTER; |
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401 | SAVETMPS; |
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402 | PUSHMARK (SP); |
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403 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
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404 | PUTBACK; |
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405 | call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); |
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406 | SPAGAIN; |
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407 | FREETMPS; |
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408 | LEAVE; |
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409 | } |
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410 | |
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411 | /* stop if no progress has been made */ |
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412 | if (old_len == grp->size) |
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413 | { |
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414 | SvREFCNT_dec (grp->sv2); |
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415 | grp->sv2 = 0; |
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416 | break; |
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417 | } |
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418 | } |
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419 | |
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420 | unblock_sig (); |
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421 | } |
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422 | |
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423 | static void aio_grp_dec (aio_req grp) |
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424 | { |
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425 | --grp->size; |
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426 | |
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427 | /* call feeder, if applicable */ |
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428 | aio_grp_feed (grp); |
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429 | |
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430 | /* finish, if done */ |
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431 | if (!grp->size && grp->int1) |
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432 | { |
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433 | block_sig (); |
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434 | |
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435 | if (!req_invoke (grp)) |
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436 | { |
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437 | req_free (grp); |
|
|
438 | unblock_sig (); |
|
|
439 | croak (0); |
|
|
440 | } |
|
|
441 | |
|
|
442 | req_free (grp); |
|
|
443 | unblock_sig (); |
|
|
444 | } |
|
|
445 | } |
|
|
446 | |
|
|
447 | static int req_invoke (aio_req req) |
82 | { |
448 | { |
83 | dSP; |
449 | dSP; |
84 | int count = 0; |
|
|
85 | aio_req req, prv; |
|
|
86 | |
450 | |
87 | pthread_mutex_lock (&reslock); |
451 | if (req->flags & FLAG_SV1_RO_OFF) |
|
|
452 | SvREADONLY_off (req->sv1); |
88 | |
453 | |
89 | { |
454 | if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
90 | /* read any signals sent by the worker threads */ |
|
|
91 | char buf [32]; |
|
|
92 | while (read (respipe [0], buf, 32) > 0) |
|
|
93 | ; |
|
|
94 | } |
|
|
95 | |
|
|
96 | req = ress; |
|
|
97 | ress = rese = 0; |
|
|
98 | |
|
|
99 | pthread_mutex_unlock (&reslock); |
|
|
100 | |
|
|
101 | while (req) |
|
|
102 | { |
455 | { |
103 | nreqs--; |
456 | ENTER; |
|
|
457 | SAVETMPS; |
|
|
458 | PUSHMARK (SP); |
|
|
459 | EXTEND (SP, 1); |
104 | |
460 | |
105 | if (req->type == REQ_QUIT) |
461 | switch (req->type) |
106 | started--; |
|
|
107 | else |
|
|
108 | { |
462 | { |
109 | int errorno = errno; |
463 | case REQ_READDIR: |
110 | errno = req->errorno; |
|
|
111 | |
|
|
112 | if (req->type == REQ_READ) |
|
|
113 | SvCUR_set (req->data, req->dataoffset |
|
|
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 | { |
464 | { |
124 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
465 | SV *rv = &PL_sv_undef; |
125 | PL_laststatval = req->result; |
|
|
126 | PL_statcache = *(req->statdata); |
|
|
127 | |
466 | |
128 | Safefree (req->statdata); |
467 | if (req->result >= 0) |
|
|
468 | { |
|
|
469 | int i; |
|
|
470 | char *buf = req->ptr2; |
|
|
471 | AV *av = newAV (); |
|
|
472 | |
|
|
473 | av_extend (av, req->result - 1); |
|
|
474 | |
|
|
475 | for (i = 0; i < req->result; ++i) |
|
|
476 | { |
|
|
477 | SV *sv = newSVpv (buf, 0); |
|
|
478 | |
|
|
479 | av_store (av, i, sv); |
|
|
480 | buf += SvCUR (sv) + 1; |
|
|
481 | } |
|
|
482 | |
|
|
483 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
|
|
484 | } |
|
|
485 | |
|
|
486 | PUSHs (rv); |
129 | } |
487 | } |
|
|
488 | break; |
130 | |
489 | |
131 | ENTER; |
490 | case REQ_OPEN: |
132 | PUSHMARK (SP); |
|
|
133 | XPUSHs (sv_2mortal (newSViv (req->result))); |
|
|
134 | |
|
|
135 | if (req->type == REQ_OPEN) |
|
|
136 | { |
491 | { |
137 | /* convert fd to fh */ |
492 | /* convert fd to fh */ |
138 | SV *fh; |
493 | SV *fh; |
139 | |
494 | |
|
|
495 | PUSHs (sv_2mortal (newSViv (req->result))); |
140 | PUTBACK; |
496 | PUTBACK; |
141 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
497 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
142 | SPAGAIN; |
498 | SPAGAIN; |
143 | |
499 | |
144 | fh = SvREFCNT_inc (POPs); |
500 | fh = POPs; |
145 | |
|
|
146 | PUSHMARK (SP); |
501 | PUSHMARK (SP); |
147 | XPUSHs (sv_2mortal (fh)); |
502 | XPUSHs (fh); |
148 | } |
503 | } |
|
|
504 | break; |
149 | |
505 | |
150 | if (SvOK (req->callback)) |
506 | case REQ_GROUP: |
|
|
507 | req->int1 = 2; /* mark group as finished */ |
|
|
508 | |
|
|
509 | if (req->sv1) |
151 | { |
510 | { |
152 | PUTBACK; |
511 | int i; |
153 | call_sv (req->callback, G_VOID | G_EVAL); |
512 | AV *av = (AV *)req->sv1; |
154 | SPAGAIN; |
513 | |
|
|
514 | EXTEND (SP, AvFILL (av) + 1); |
|
|
515 | for (i = 0; i <= AvFILL (av); ++i) |
|
|
516 | PUSHs (*av_fetch (av, i, 0)); |
155 | } |
517 | } |
|
|
518 | break; |
156 | |
519 | |
157 | LEAVE; |
520 | case REQ_NOP: |
|
|
521 | case REQ_BUSY: |
|
|
522 | break; |
|
|
523 | |
|
|
524 | case REQ_READLINK: |
|
|
525 | if (req->result > 0) |
158 | |
526 | { |
159 | if (req->callback) |
527 | SvCUR_set (req->sv1, req->result); |
160 | SvREFCNT_dec (req->callback); |
528 | *SvEND (req->sv1) = 0; |
|
|
529 | PUSHs (req->sv1); |
|
|
530 | } |
|
|
531 | break; |
161 | |
532 | |
162 | errno = errorno; |
533 | case REQ_STAT: |
163 | count++; |
534 | case REQ_LSTAT: |
|
|
535 | case REQ_FSTAT: |
|
|
536 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
|
|
537 | PL_laststatval = req->result; |
|
|
538 | PL_statcache = *(Stat_t *)(req->ptr2); |
|
|
539 | PUSHs (sv_2mortal (newSViv (req->result))); |
|
|
540 | break; |
|
|
541 | |
|
|
542 | case REQ_READ: |
|
|
543 | SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0)); |
|
|
544 | *SvEND (req->sv1) = 0; |
|
|
545 | PUSHs (sv_2mortal (newSViv (req->result))); |
|
|
546 | break; |
|
|
547 | |
|
|
548 | default: |
|
|
549 | PUSHs (sv_2mortal (newSViv (req->result))); |
|
|
550 | break; |
164 | } |
551 | } |
165 | |
552 | |
166 | prv = req; |
553 | errno = req->errorno; |
167 | req = req->next; |
|
|
168 | Safefree (prv); |
|
|
169 | |
554 | |
170 | /* TODO: croak on errors? */ |
555 | PUTBACK; |
|
|
556 | call_sv (req->callback, G_VOID | G_EVAL); |
|
|
557 | SPAGAIN; |
|
|
558 | |
|
|
559 | FREETMPS; |
|
|
560 | LEAVE; |
171 | } |
561 | } |
172 | |
562 | |
173 | return count; |
563 | if (req->grp) |
|
|
564 | { |
|
|
565 | aio_req grp = req->grp; |
|
|
566 | |
|
|
567 | /* unlink request */ |
|
|
568 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
|
|
569 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
|
|
570 | |
|
|
571 | if (grp->grp_first == req) |
|
|
572 | grp->grp_first = req->grp_next; |
|
|
573 | |
|
|
574 | aio_grp_dec (grp); |
|
|
575 | } |
|
|
576 | |
|
|
577 | return !SvTRUE (ERRSV); |
|
|
578 | } |
|
|
579 | |
|
|
580 | static void req_free (aio_req req) |
|
|
581 | { |
|
|
582 | if (req->self) |
|
|
583 | { |
|
|
584 | sv_unmagic (req->self, PERL_MAGIC_ext); |
|
|
585 | SvREFCNT_dec (req->self); |
|
|
586 | } |
|
|
587 | |
|
|
588 | SvREFCNT_dec (req->fh); |
|
|
589 | SvREFCNT_dec (req->sv1); |
|
|
590 | SvREFCNT_dec (req->sv2); |
|
|
591 | SvREFCNT_dec (req->callback); |
|
|
592 | |
|
|
593 | if (req->flags & FLAG_PTR2_FREE) |
|
|
594 | free (req->ptr2); |
|
|
595 | |
|
|
596 | Safefree (req); |
|
|
597 | } |
|
|
598 | |
|
|
599 | static void req_cancel_subs (aio_req grp) |
|
|
600 | { |
|
|
601 | aio_req sub; |
|
|
602 | |
|
|
603 | if (grp->type != REQ_GROUP) |
|
|
604 | return; |
|
|
605 | |
|
|
606 | SvREFCNT_dec (grp->sv2); |
|
|
607 | grp->sv2 = 0; |
|
|
608 | |
|
|
609 | for (sub = grp->grp_first; sub; sub = sub->grp_next) |
|
|
610 | req_cancel (sub); |
|
|
611 | } |
|
|
612 | |
|
|
613 | static void req_cancel (aio_req req) |
|
|
614 | { |
|
|
615 | req->flags |= FLAG_CANCELLED; |
|
|
616 | |
|
|
617 | req_cancel_subs (req); |
174 | } |
618 | } |
175 | |
619 | |
176 | static void *aio_proc(void *arg); |
620 | static void *aio_proc(void *arg); |
177 | |
621 | |
178 | static void |
|
|
179 | start_thread (void) |
622 | static void start_thread (void) |
180 | { |
623 | { |
181 | sigset_t fullsigset, oldsigset; |
624 | sigset_t fullsigset, oldsigset; |
182 | pthread_t tid; |
|
|
183 | pthread_attr_t attr; |
625 | pthread_attr_t attr; |
|
|
626 | |
|
|
627 | worker *wrk = calloc (1, sizeof (worker)); |
|
|
628 | |
|
|
629 | if (!wrk) |
|
|
630 | croak ("unable to allocate worker thread data"); |
184 | |
631 | |
185 | pthread_attr_init (&attr); |
632 | pthread_attr_init (&attr); |
186 | pthread_attr_setstacksize (&attr, STACKSIZE); |
633 | pthread_attr_setstacksize (&attr, STACKSIZE); |
187 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
634 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
|
|
635 | #ifdef PTHREAD_SCOPE_PROCESS |
|
|
636 | pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
|
|
637 | #endif |
188 | |
638 | |
189 | sigfillset (&fullsigset); |
639 | sigfillset (&fullsigset); |
|
|
640 | |
|
|
641 | LOCK (wrklock); |
190 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
642 | pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset); |
191 | |
643 | |
192 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
644 | if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0) |
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 | { |
645 | { |
209 | reqe->next = req; |
646 | wrk->prev = &wrk_first; |
210 | reqe = req; |
647 | wrk->next = wrk_first.next; |
|
|
648 | wrk_first.next->prev = wrk; |
|
|
649 | wrk_first.next = wrk; |
|
|
650 | ++started; |
211 | } |
651 | } |
212 | else |
652 | else |
213 | reqe = reqs = req; |
653 | free (wrk); |
214 | |
654 | |
|
|
655 | pthread_sigmask (SIG_SETMASK, &oldsigset, 0); |
|
|
656 | UNLOCK (wrklock); |
|
|
657 | } |
|
|
658 | |
|
|
659 | static void maybe_start_thread () |
|
|
660 | { |
|
|
661 | if (get_nthreads () >= wanted) |
|
|
662 | return; |
|
|
663 | |
|
|
664 | /* todo: maybe use idle here, but might be less exact */ |
|
|
665 | if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs) |
|
|
666 | return; |
|
|
667 | |
|
|
668 | start_thread (); |
|
|
669 | } |
|
|
670 | |
|
|
671 | static void req_send (aio_req req) |
|
|
672 | { |
|
|
673 | block_sig (); |
|
|
674 | |
|
|
675 | ++nreqs; |
|
|
676 | |
|
|
677 | LOCK (reqlock); |
|
|
678 | ++nready; |
|
|
679 | reqq_push (&req_queue, req); |
215 | pthread_cond_signal (&reqwait); |
680 | pthread_cond_signal (&reqwait); |
216 | pthread_mutex_unlock (&reqlock); |
681 | UNLOCK (reqlock); |
217 | |
682 | |
218 | while (nreqs > max_outstanding) |
683 | unblock_sig (); |
|
|
684 | |
|
|
685 | maybe_start_thread (); |
|
|
686 | } |
|
|
687 | |
|
|
688 | static void end_thread (void) |
|
|
689 | { |
|
|
690 | aio_req req; |
|
|
691 | |
|
|
692 | Newz (0, req, 1, aio_cb); |
|
|
693 | |
|
|
694 | req->type = REQ_QUIT; |
|
|
695 | req->pri = PRI_MAX + PRI_BIAS; |
|
|
696 | |
|
|
697 | LOCK (reqlock); |
|
|
698 | reqq_push (&req_queue, req); |
|
|
699 | pthread_cond_signal (&reqwait); |
|
|
700 | UNLOCK (reqlock); |
|
|
701 | |
|
|
702 | LOCK (wrklock); |
|
|
703 | --started; |
|
|
704 | UNLOCK (wrklock); |
|
|
705 | } |
|
|
706 | |
|
|
707 | static void set_max_idle (int nthreads) |
|
|
708 | { |
|
|
709 | if (WORDACCESS_UNSAFE) LOCK (reqlock); |
|
|
710 | max_idle = nthreads <= 0 ? 1 : nthreads; |
|
|
711 | if (WORDACCESS_UNSAFE) UNLOCK (reqlock); |
|
|
712 | } |
|
|
713 | |
|
|
714 | static void min_parallel (int nthreads) |
|
|
715 | { |
|
|
716 | if (wanted < nthreads) |
|
|
717 | wanted = nthreads; |
|
|
718 | } |
|
|
719 | |
|
|
720 | static void max_parallel (int nthreads) |
|
|
721 | { |
|
|
722 | if (wanted > nthreads) |
|
|
723 | wanted = nthreads; |
|
|
724 | |
|
|
725 | while (started > wanted) |
|
|
726 | end_thread (); |
|
|
727 | } |
|
|
728 | |
|
|
729 | static void poll_wait () |
|
|
730 | { |
|
|
731 | fd_set rfd; |
|
|
732 | |
|
|
733 | while (nreqs) |
219 | { |
734 | { |
|
|
735 | int size; |
|
|
736 | if (WORDACCESS_UNSAFE) LOCK (reslock); |
|
|
737 | size = res_queue.size; |
|
|
738 | if (WORDACCESS_UNSAFE) UNLOCK (reslock); |
|
|
739 | |
|
|
740 | if (size) |
|
|
741 | return; |
|
|
742 | |
|
|
743 | maybe_start_thread (); |
|
|
744 | |
|
|
745 | FD_ZERO(&rfd); |
|
|
746 | FD_SET(respipe [0], &rfd); |
|
|
747 | |
|
|
748 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
|
|
749 | } |
|
|
750 | } |
|
|
751 | |
|
|
752 | static int poll_cb () |
|
|
753 | { |
|
|
754 | dSP; |
|
|
755 | int count = 0; |
|
|
756 | int maxreqs = max_poll_reqs; |
|
|
757 | int do_croak = 0; |
|
|
758 | struct timeval tv_start, tv_now; |
|
|
759 | aio_req req; |
|
|
760 | |
|
|
761 | if (max_poll_time) |
|
|
762 | gettimeofday (&tv_start, 0); |
|
|
763 | |
|
|
764 | block_sig (); |
|
|
765 | |
|
|
766 | for (;;) |
|
|
767 | { |
|
|
768 | for (;;) |
|
|
769 | { |
|
|
770 | maybe_start_thread (); |
|
|
771 | |
|
|
772 | LOCK (reslock); |
|
|
773 | req = reqq_shift (&res_queue); |
|
|
774 | |
|
|
775 | if (req) |
|
|
776 | { |
|
|
777 | --npending; |
|
|
778 | |
|
|
779 | if (!res_queue.size) |
|
|
780 | { |
|
|
781 | /* read any signals sent by the worker threads */ |
|
|
782 | char buf [4]; |
|
|
783 | while (read (respipe [0], buf, 4) == 4) |
|
|
784 | ; |
|
|
785 | } |
|
|
786 | } |
|
|
787 | |
|
|
788 | UNLOCK (reslock); |
|
|
789 | |
|
|
790 | if (!req) |
|
|
791 | break; |
|
|
792 | |
|
|
793 | --nreqs; |
|
|
794 | |
|
|
795 | if (req->type == REQ_GROUP && req->size) |
|
|
796 | { |
|
|
797 | req->int1 = 1; /* mark request as delayed */ |
|
|
798 | continue; |
|
|
799 | } |
|
|
800 | else |
|
|
801 | { |
|
|
802 | if (!req_invoke (req)) |
|
|
803 | { |
|
|
804 | req_free (req); |
|
|
805 | unblock_sig (); |
|
|
806 | croak (0); |
|
|
807 | } |
|
|
808 | |
|
|
809 | count++; |
|
|
810 | } |
|
|
811 | |
|
|
812 | req_free (req); |
|
|
813 | |
|
|
814 | if (maxreqs && !--maxreqs) |
|
|
815 | break; |
|
|
816 | |
|
|
817 | if (max_poll_time) |
|
|
818 | { |
|
|
819 | gettimeofday (&tv_now, 0); |
|
|
820 | |
|
|
821 | if (tvdiff (&tv_start, &tv_now) >= max_poll_time) |
|
|
822 | break; |
|
|
823 | } |
|
|
824 | } |
|
|
825 | |
|
|
826 | if (nreqs <= max_outstanding) |
|
|
827 | break; |
|
|
828 | |
220 | poll_wait (); |
829 | poll_wait (); |
221 | poll_cb (); |
830 | |
|
|
831 | ++maxreqs; |
222 | } |
832 | } |
223 | } |
|
|
224 | |
833 | |
225 | static void |
834 | unblock_sig (); |
226 | end_thread (void) |
835 | return count; |
227 | { |
|
|
228 | aio_req req; |
|
|
229 | New (0, req, 1, aio_cb); |
|
|
230 | req->type = REQ_QUIT; |
|
|
231 | |
|
|
232 | send_req (req); |
|
|
233 | } |
836 | } |
234 | |
837 | |
|
|
838 | static void create_pipe () |
|
|
839 | { |
|
|
840 | if (pipe (respipe)) |
|
|
841 | croak ("unable to initialize result pipe"); |
|
|
842 | |
|
|
843 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
|
|
844 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
845 | |
|
|
846 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
|
|
847 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
848 | } |
|
|
849 | |
|
|
850 | /*****************************************************************************/ |
235 | /* work around various missing functions */ |
851 | /* work around various missing functions */ |
236 | |
852 | |
237 | #if !HAVE_PREADWRITE |
853 | #if !HAVE_PREADWRITE |
238 | # define pread aio_pread |
854 | # define pread aio_pread |
239 | # define pwrite aio_pwrite |
855 | # define pwrite aio_pwrite |
… | |
… | |
241 | /* |
857 | /* |
242 | * make our pread/pwrite safe against themselves, but not against |
858 | * make our pread/pwrite safe against themselves, but not against |
243 | * normal read/write by using a mutex. slows down execution a lot, |
859 | * normal read/write by using a mutex. slows down execution a lot, |
244 | * but that's your problem, not mine. |
860 | * but that's your problem, not mine. |
245 | */ |
861 | */ |
246 | static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; |
862 | static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
247 | |
863 | |
248 | static ssize_t |
864 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
249 | pread (int fd, void *buf, size_t count, off_t offset) |
|
|
250 | { |
865 | { |
251 | ssize_t res; |
866 | ssize_t res; |
252 | off_t ooffset; |
867 | off_t ooffset; |
253 | |
868 | |
254 | pthread_mutex_lock (&iolock); |
869 | LOCK (preadwritelock); |
255 | ooffset = lseek (fd, 0, SEEK_CUR); |
870 | ooffset = lseek (fd, 0, SEEK_CUR); |
256 | lseek (fd, offset, SEEK_SET); |
871 | lseek (fd, offset, SEEK_SET); |
257 | res = read (fd, buf, count); |
872 | res = read (fd, buf, count); |
258 | lseek (fd, ooffset, SEEK_SET); |
873 | lseek (fd, ooffset, SEEK_SET); |
259 | pthread_mutex_unlock (&iolock); |
874 | UNLOCK (preadwritelock); |
260 | |
875 | |
261 | return res; |
876 | return res; |
262 | } |
877 | } |
263 | |
878 | |
264 | static ssize_t |
|
|
265 | pwrite (int fd, void *buf, size_t count, off_t offset) |
879 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
266 | { |
880 | { |
267 | ssize_t res; |
881 | ssize_t res; |
268 | off_t ooffset; |
882 | off_t ooffset; |
269 | |
883 | |
270 | pthread_mutex_lock (&iolock); |
884 | LOCK (preadwritelock); |
271 | ooffset = lseek (fd, 0, SEEK_CUR); |
885 | ooffset = lseek (fd, 0, SEEK_CUR); |
272 | lseek (fd, offset, SEEK_SET); |
886 | lseek (fd, offset, SEEK_SET); |
273 | res = write (fd, buf, count); |
887 | res = write (fd, buf, count); |
274 | lseek (fd, offset, SEEK_SET); |
888 | lseek (fd, offset, SEEK_SET); |
275 | pthread_mutex_unlock (&iolock); |
889 | UNLOCK (preadwritelock); |
276 | |
890 | |
277 | return res; |
891 | return res; |
278 | } |
892 | } |
279 | #endif |
893 | #endif |
280 | |
894 | |
281 | #if !HAVE_FDATASYNC |
895 | #if !HAVE_FDATASYNC |
282 | # define fdatasync fsync |
896 | # define fdatasync fsync |
283 | #endif |
897 | #endif |
284 | |
898 | |
285 | #if !HAVE_READAHEAD |
899 | #if !HAVE_READAHEAD |
286 | # define readahead aio_readahead |
900 | # define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) |
287 | |
901 | |
288 | static char readahead_buf[4096]; |
902 | static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) |
289 | |
|
|
290 | static ssize_t |
|
|
291 | readahead (int fd, off_t offset, size_t count) |
|
|
292 | { |
903 | { |
|
|
904 | dBUF; |
|
|
905 | |
293 | while (count > 0) |
906 | while (count > 0) |
294 | { |
907 | { |
295 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
908 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
296 | |
909 | |
297 | pread (fd, readahead_buf, len, offset); |
910 | pread (fd, aio_buf, len, offset); |
298 | offset += len; |
911 | offset += len; |
299 | count -= len; |
912 | count -= len; |
300 | } |
913 | } |
301 | |
914 | |
302 | errno = 0; |
915 | errno = 0; |
303 | } |
916 | } |
|
|
917 | |
304 | #endif |
918 | #endif |
305 | |
919 | |
306 | static void * |
920 | #if !HAVE_READDIR_R |
|
|
921 | # define readdir_r aio_readdir_r |
|
|
922 | |
|
|
923 | static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
|
|
924 | |
|
|
925 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
|
|
926 | { |
|
|
927 | struct dirent *e; |
|
|
928 | int errorno; |
|
|
929 | |
|
|
930 | LOCK (readdirlock); |
|
|
931 | |
|
|
932 | e = readdir (dirp); |
|
|
933 | errorno = errno; |
|
|
934 | |
|
|
935 | if (e) |
|
|
936 | { |
|
|
937 | *res = ent; |
|
|
938 | strcpy (ent->d_name, e->d_name); |
|
|
939 | } |
|
|
940 | else |
|
|
941 | *res = 0; |
|
|
942 | |
|
|
943 | UNLOCK (readdirlock); |
|
|
944 | |
|
|
945 | errno = errorno; |
|
|
946 | return e ? 0 : -1; |
|
|
947 | } |
|
|
948 | #endif |
|
|
949 | |
|
|
950 | /* sendfile always needs emulation */ |
|
|
951 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) |
|
|
952 | { |
|
|
953 | ssize_t res; |
|
|
954 | |
|
|
955 | if (!count) |
|
|
956 | return 0; |
|
|
957 | |
|
|
958 | #if HAVE_SENDFILE |
|
|
959 | # if __linux |
|
|
960 | res = sendfile (ofd, ifd, &offset, count); |
|
|
961 | |
|
|
962 | # elif __freebsd |
|
|
963 | /* |
|
|
964 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
|
|
965 | * wasted on making it similar to other I/O functions. |
|
|
966 | */ |
|
|
967 | { |
|
|
968 | off_t sbytes; |
|
|
969 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
|
|
970 | |
|
|
971 | if (res < 0 && sbytes) |
|
|
972 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
|
|
973 | res = sbytes; |
|
|
974 | } |
|
|
975 | |
|
|
976 | # elif __hpux |
|
|
977 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
|
|
978 | |
|
|
979 | # elif __solaris |
|
|
980 | { |
|
|
981 | struct sendfilevec vec; |
|
|
982 | size_t sbytes; |
|
|
983 | |
|
|
984 | vec.sfv_fd = ifd; |
|
|
985 | vec.sfv_flag = 0; |
|
|
986 | vec.sfv_off = offset; |
|
|
987 | vec.sfv_len = count; |
|
|
988 | |
|
|
989 | res = sendfilev (ofd, &vec, 1, &sbytes); |
|
|
990 | |
|
|
991 | if (res < 0 && sbytes) |
|
|
992 | res = sbytes; |
|
|
993 | } |
|
|
994 | |
|
|
995 | # endif |
|
|
996 | #else |
|
|
997 | res = -1; |
|
|
998 | errno = ENOSYS; |
|
|
999 | #endif |
|
|
1000 | |
|
|
1001 | if (res < 0 |
|
|
1002 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
1003 | #if __solaris |
|
|
1004 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
|
|
1005 | #endif |
|
|
1006 | ) |
|
|
1007 | ) |
|
|
1008 | { |
|
|
1009 | /* emulate sendfile. this is a major pain in the ass */ |
|
|
1010 | dBUF; |
|
|
1011 | |
|
|
1012 | res = 0; |
|
|
1013 | |
|
|
1014 | while (count) |
|
|
1015 | { |
|
|
1016 | ssize_t cnt; |
|
|
1017 | |
|
|
1018 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
|
|
1019 | |
|
|
1020 | if (cnt <= 0) |
|
|
1021 | { |
|
|
1022 | if (cnt && !res) res = -1; |
|
|
1023 | break; |
|
|
1024 | } |
|
|
1025 | |
|
|
1026 | cnt = write (ofd, aio_buf, cnt); |
|
|
1027 | |
|
|
1028 | if (cnt <= 0) |
|
|
1029 | { |
|
|
1030 | if (cnt && !res) res = -1; |
|
|
1031 | break; |
|
|
1032 | } |
|
|
1033 | |
|
|
1034 | offset += cnt; |
|
|
1035 | res += cnt; |
|
|
1036 | count -= cnt; |
|
|
1037 | } |
|
|
1038 | } |
|
|
1039 | |
|
|
1040 | return res; |
|
|
1041 | } |
|
|
1042 | |
|
|
1043 | /* read a full directory */ |
|
|
1044 | static void scandir_ (aio_req req, worker *self) |
|
|
1045 | { |
|
|
1046 | DIR *dirp; |
|
|
1047 | union |
|
|
1048 | { |
|
|
1049 | struct dirent d; |
|
|
1050 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
|
|
1051 | } *u; |
|
|
1052 | struct dirent *entp; |
|
|
1053 | char *name, *names; |
|
|
1054 | int memlen = 4096; |
|
|
1055 | int memofs = 0; |
|
|
1056 | int res = 0; |
|
|
1057 | int errorno; |
|
|
1058 | |
|
|
1059 | LOCK (wrklock); |
|
|
1060 | self->dirp = dirp = opendir (req->ptr1); |
|
|
1061 | self->dbuf = u = malloc (sizeof (*u)); |
|
|
1062 | req->flags |= FLAG_PTR2_FREE; |
|
|
1063 | req->ptr2 = names = malloc (memlen); |
|
|
1064 | UNLOCK (wrklock); |
|
|
1065 | |
|
|
1066 | if (dirp && u && names) |
|
|
1067 | for (;;) |
|
|
1068 | { |
|
|
1069 | errno = 0; |
|
|
1070 | readdir_r (dirp, &u->d, &entp); |
|
|
1071 | |
|
|
1072 | if (!entp) |
|
|
1073 | break; |
|
|
1074 | |
|
|
1075 | name = entp->d_name; |
|
|
1076 | |
|
|
1077 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
|
|
1078 | { |
|
|
1079 | int len = strlen (name) + 1; |
|
|
1080 | |
|
|
1081 | res++; |
|
|
1082 | |
|
|
1083 | while (memofs + len > memlen) |
|
|
1084 | { |
|
|
1085 | memlen *= 2; |
|
|
1086 | LOCK (wrklock); |
|
|
1087 | req->ptr2 = names = realloc (names, memlen); |
|
|
1088 | UNLOCK (wrklock); |
|
|
1089 | |
|
|
1090 | if (!names) |
|
|
1091 | break; |
|
|
1092 | } |
|
|
1093 | |
|
|
1094 | memcpy (names + memofs, name, len); |
|
|
1095 | memofs += len; |
|
|
1096 | } |
|
|
1097 | } |
|
|
1098 | |
|
|
1099 | if (errno) |
|
|
1100 | res = -1; |
|
|
1101 | |
|
|
1102 | req->result = res; |
|
|
1103 | } |
|
|
1104 | |
|
|
1105 | /*****************************************************************************/ |
|
|
1106 | |
307 | aio_proc (void *thr_arg) |
1107 | static void *aio_proc (void *thr_arg) |
308 | { |
1108 | { |
309 | aio_req req; |
1109 | aio_req req; |
310 | int type; |
1110 | struct timespec ts; |
|
|
1111 | worker *self = (worker *)thr_arg; |
311 | |
1112 | |
312 | do |
1113 | /* try to distribute timeouts somewhat evenly */ |
|
|
1114 | ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL) |
|
|
1115 | * (1000000000UL / 1024UL); |
|
|
1116 | |
|
|
1117 | for (;;) |
313 | { |
1118 | { |
314 | pthread_mutex_lock (&reqlock); |
1119 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
|
|
1120 | |
|
|
1121 | LOCK (reqlock); |
315 | |
1122 | |
316 | for (;;) |
1123 | for (;;) |
317 | { |
1124 | { |
318 | req = reqs; |
1125 | self->req = req = reqq_shift (&req_queue); |
319 | |
|
|
320 | if (reqs) |
|
|
321 | { |
|
|
322 | reqs = reqs->next; |
|
|
323 | if (!reqs) reqe = 0; |
|
|
324 | } |
|
|
325 | |
1126 | |
326 | if (req) |
1127 | if (req) |
327 | break; |
1128 | break; |
328 | |
1129 | |
|
|
1130 | ++idle; |
|
|
1131 | |
|
|
1132 | if (pthread_cond_timedwait (&reqwait, &reqlock, &ts) |
|
|
1133 | == ETIMEDOUT) |
|
|
1134 | { |
|
|
1135 | if (idle > max_idle) |
|
|
1136 | { |
|
|
1137 | --idle; |
|
|
1138 | UNLOCK (reqlock); |
|
|
1139 | LOCK (wrklock); |
|
|
1140 | --started; |
|
|
1141 | UNLOCK (wrklock); |
|
|
1142 | goto quit; |
|
|
1143 | } |
|
|
1144 | |
|
|
1145 | /* we are allowed to idle, so do so without any timeout */ |
329 | pthread_cond_wait (&reqwait, &reqlock); |
1146 | pthread_cond_wait (&reqwait, &reqlock); |
|
|
1147 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
|
|
1148 | } |
|
|
1149 | |
|
|
1150 | --idle; |
330 | } |
1151 | } |
331 | |
1152 | |
332 | pthread_mutex_unlock (&reqlock); |
1153 | --nready; |
|
|
1154 | |
|
|
1155 | UNLOCK (reqlock); |
333 | |
1156 | |
334 | errno = 0; /* strictly unnecessary */ |
1157 | errno = 0; /* strictly unnecessary */ |
335 | |
1158 | |
336 | type = req->type; |
1159 | if (!(req->flags & FLAG_CANCELLED)) |
337 | |
|
|
338 | switch (type) |
1160 | switch (req->type) |
|
|
1161 | { |
|
|
1162 | case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break; |
|
|
1163 | case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break; |
|
|
1164 | |
|
|
1165 | case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
|
|
1166 | case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break; |
|
|
1167 | |
|
|
1168 | case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break; |
|
|
1169 | case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break; |
|
|
1170 | case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break; |
|
|
1171 | |
|
|
1172 | case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break; |
|
|
1173 | case REQ_CLOSE: req->result = close (req->int1); break; |
|
|
1174 | case REQ_UNLINK: req->result = unlink (req->ptr1); break; |
|
|
1175 | case REQ_RMDIR: req->result = rmdir (req->ptr1); break; |
|
|
1176 | case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break; |
|
|
1177 | case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break; |
|
|
1178 | case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break; |
|
|
1179 | case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break; |
|
|
1180 | case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break; |
|
|
1181 | |
|
|
1182 | case REQ_FDATASYNC: req->result = fdatasync (req->int1); break; |
|
|
1183 | case REQ_FSYNC: req->result = fsync (req->int1); break; |
|
|
1184 | case REQ_READDIR: scandir_ (req, self); break; |
|
|
1185 | |
|
|
1186 | case REQ_BUSY: |
|
|
1187 | { |
|
|
1188 | struct timeval tv; |
|
|
1189 | |
|
|
1190 | tv.tv_sec = req->int1; |
|
|
1191 | tv.tv_usec = req->int2; |
|
|
1192 | |
|
|
1193 | req->result = select (0, 0, 0, 0, &tv); |
|
|
1194 | } |
|
|
1195 | |
|
|
1196 | case REQ_GROUP: |
|
|
1197 | case REQ_NOP: |
|
|
1198 | break; |
|
|
1199 | |
|
|
1200 | case REQ_QUIT: |
|
|
1201 | goto quit; |
|
|
1202 | |
|
|
1203 | default: |
|
|
1204 | req->result = ENOSYS; |
|
|
1205 | break; |
|
|
1206 | } |
|
|
1207 | |
|
|
1208 | req->errorno = errno; |
|
|
1209 | |
|
|
1210 | LOCK (reslock); |
|
|
1211 | |
|
|
1212 | ++npending; |
|
|
1213 | |
|
|
1214 | if (!reqq_push (&res_queue, req)) |
339 | { |
1215 | { |
340 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
|
|
341 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
|
|
342 | |
|
|
343 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
|
|
344 | |
|
|
345 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
|
|
346 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
|
|
347 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
|
|
348 | |
|
|
349 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
|
|
350 | case REQ_CLOSE: req->result = close (req->fd); break; |
|
|
351 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
|
|
352 | |
|
|
353 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
|
|
354 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
|
|
355 | |
|
|
356 | case REQ_QUIT: |
|
|
357 | break; |
|
|
358 | |
|
|
359 | default: |
|
|
360 | req->result = ENOSYS; |
|
|
361 | break; |
|
|
362 | } |
|
|
363 | |
|
|
364 | req->errorno = errno; |
|
|
365 | |
|
|
366 | pthread_mutex_lock (&reslock); |
|
|
367 | |
|
|
368 | req->next = 0; |
|
|
369 | |
|
|
370 | if (rese) |
|
|
371 | { |
|
|
372 | rese->next = req; |
|
|
373 | rese = req; |
|
|
374 | } |
|
|
375 | else |
|
|
376 | { |
|
|
377 | rese = ress = req; |
|
|
378 | |
|
|
379 | /* write a dummy byte to the pipe so fh becomes ready */ |
1216 | /* write a dummy byte to the pipe so fh becomes ready */ |
380 | write (respipe [1], &respipe, 1); |
1217 | write (respipe [1], &respipe, 1); |
|
|
1218 | |
|
|
1219 | /* optionally signal the main thread asynchronously */ |
|
|
1220 | if (main_sig) |
|
|
1221 | pthread_kill (main_tid, main_sig); |
381 | } |
1222 | } |
382 | |
1223 | |
383 | pthread_mutex_unlock (&reslock); |
1224 | self->req = 0; |
|
|
1225 | worker_clear (self); |
|
|
1226 | |
|
|
1227 | UNLOCK (reslock); |
384 | } |
1228 | } |
385 | while (type != REQ_QUIT); |
1229 | |
|
|
1230 | quit: |
|
|
1231 | LOCK (wrklock); |
|
|
1232 | worker_free (self); |
|
|
1233 | UNLOCK (wrklock); |
386 | |
1234 | |
387 | return 0; |
1235 | return 0; |
388 | } |
1236 | } |
389 | |
1237 | |
|
|
1238 | /*****************************************************************************/ |
|
|
1239 | |
|
|
1240 | static void atfork_prepare (void) |
|
|
1241 | { |
|
|
1242 | LOCK (wrklock); |
|
|
1243 | LOCK (reqlock); |
|
|
1244 | LOCK (reslock); |
|
|
1245 | #if !HAVE_PREADWRITE |
|
|
1246 | LOCK (preadwritelock); |
|
|
1247 | #endif |
|
|
1248 | #if !HAVE_READDIR_R |
|
|
1249 | LOCK (readdirlock); |
|
|
1250 | #endif |
|
|
1251 | } |
|
|
1252 | |
|
|
1253 | static void atfork_parent (void) |
|
|
1254 | { |
|
|
1255 | #if !HAVE_READDIR_R |
|
|
1256 | UNLOCK (readdirlock); |
|
|
1257 | #endif |
|
|
1258 | #if !HAVE_PREADWRITE |
|
|
1259 | UNLOCK (preadwritelock); |
|
|
1260 | #endif |
|
|
1261 | UNLOCK (reslock); |
|
|
1262 | UNLOCK (reqlock); |
|
|
1263 | UNLOCK (wrklock); |
|
|
1264 | } |
|
|
1265 | |
|
|
1266 | static void atfork_child (void) |
|
|
1267 | { |
|
|
1268 | aio_req prv; |
|
|
1269 | |
|
|
1270 | while (prv = reqq_shift (&req_queue)) |
|
|
1271 | req_free (prv); |
|
|
1272 | |
|
|
1273 | while (prv = reqq_shift (&res_queue)) |
|
|
1274 | req_free (prv); |
|
|
1275 | |
|
|
1276 | while (wrk_first.next != &wrk_first) |
|
|
1277 | { |
|
|
1278 | worker *wrk = wrk_first.next; |
|
|
1279 | |
|
|
1280 | if (wrk->req) |
|
|
1281 | req_free (wrk->req); |
|
|
1282 | |
|
|
1283 | worker_clear (wrk); |
|
|
1284 | worker_free (wrk); |
|
|
1285 | } |
|
|
1286 | |
|
|
1287 | started = 0; |
|
|
1288 | idle = 0; |
|
|
1289 | nreqs = 0; |
|
|
1290 | nready = 0; |
|
|
1291 | npending = 0; |
|
|
1292 | |
|
|
1293 | close (respipe [0]); |
|
|
1294 | close (respipe [1]); |
|
|
1295 | create_pipe (); |
|
|
1296 | |
|
|
1297 | atfork_parent (); |
|
|
1298 | } |
|
|
1299 | |
|
|
1300 | #define dREQ \ |
|
|
1301 | aio_req req; \ |
|
|
1302 | int req_pri = next_pri; \ |
|
|
1303 | next_pri = DEFAULT_PRI + PRI_BIAS; \ |
|
|
1304 | \ |
|
|
1305 | if (SvOK (callback) && !SvROK (callback)) \ |
|
|
1306 | croak ("callback must be undef or of reference type"); \ |
|
|
1307 | \ |
|
|
1308 | Newz (0, req, 1, aio_cb); \ |
|
|
1309 | if (!req) \ |
|
|
1310 | croak ("out of memory during aio_req allocation"); \ |
|
|
1311 | \ |
|
|
1312 | req->callback = newSVsv (callback); \ |
|
|
1313 | req->pri = req_pri |
|
|
1314 | |
|
|
1315 | #define REQ_SEND \ |
|
|
1316 | req_send (req); \ |
|
|
1317 | \ |
|
|
1318 | if (GIMME_V != G_VOID) \ |
|
|
1319 | XPUSHs (req_sv (req, AIO_REQ_KLASS)); |
|
|
1320 | |
390 | MODULE = IO::AIO PACKAGE = IO::AIO |
1321 | MODULE = IO::AIO PACKAGE = IO::AIO |
391 | |
1322 | |
392 | PROTOTYPES: ENABLE |
1323 | PROTOTYPES: ENABLE |
393 | |
1324 | |
394 | BOOT: |
1325 | BOOT: |
395 | { |
1326 | { |
396 | if (pipe (respipe)) |
1327 | HV *stash = gv_stashpv ("IO::AIO", 1); |
397 | croak ("unable to initialize result pipe"); |
|
|
398 | |
1328 | |
399 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
1329 | newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); |
400 | croak ("cannot set result pipe to nonblocking mode"); |
1330 | newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); |
|
|
1331 | newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); |
|
|
1332 | newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT)); |
|
|
1333 | newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC)); |
|
|
1334 | newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO)); |
|
|
1335 | newCONSTSUB (stash, "SIGIO", newSViv (SIGIO)); |
401 | |
1336 | |
402 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
1337 | create_pipe (); |
403 | croak ("cannot set result pipe to nonblocking mode"); |
1338 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
404 | } |
1339 | } |
405 | |
1340 | |
406 | void |
1341 | void |
407 | min_parallel(nthreads) |
1342 | max_poll_reqs (int nreqs) |
408 | int nthreads |
|
|
409 | PROTOTYPE: $ |
1343 | PROTOTYPE: $ |
410 | CODE: |
1344 | CODE: |
411 | while (nthreads > started) |
1345 | max_poll_reqs = nreqs; |
412 | start_thread (); |
|
|
413 | |
1346 | |
414 | void |
1347 | void |
415 | max_parallel(nthreads) |
1348 | max_poll_time (double nseconds) |
416 | int nthreads |
|
|
417 | PROTOTYPE: $ |
1349 | PROTOTYPE: $ |
418 | CODE: |
1350 | CODE: |
419 | { |
1351 | max_poll_time = nseconds * AIO_TICKS; |
420 | int cur = started; |
|
|
421 | while (cur > nthreads) |
|
|
422 | { |
|
|
423 | end_thread (); |
|
|
424 | cur--; |
|
|
425 | } |
|
|
426 | |
1352 | |
427 | while (started > nthreads) |
1353 | void |
428 | { |
1354 | min_parallel (int nthreads) |
429 | poll_wait (); |
1355 | PROTOTYPE: $ |
430 | poll_cb (); |
1356 | |
431 | } |
1357 | void |
432 | } |
1358 | max_parallel (int nthreads) |
|
|
1359 | PROTOTYPE: $ |
|
|
1360 | |
|
|
1361 | void |
|
|
1362 | max_idle (int nthreads) |
|
|
1363 | PROTOTYPE: $ |
|
|
1364 | CODE: |
|
|
1365 | set_max_idle (nthreads); |
433 | |
1366 | |
434 | int |
1367 | int |
435 | max_outstanding(nreqs) |
1368 | max_outstanding (int maxreqs) |
436 | int nreqs |
1369 | PROTOTYPE: $ |
437 | PROTOTYPE: $ |
|
|
438 | CODE: |
1370 | CODE: |
439 | RETVAL = max_outstanding; |
1371 | RETVAL = max_outstanding; |
440 | max_outstanding = nreqs; |
1372 | max_outstanding = maxreqs; |
|
|
1373 | OUTPUT: |
|
|
1374 | RETVAL |
441 | |
1375 | |
442 | void |
1376 | void |
443 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
1377 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
444 | SV * pathname |
1378 | SV8 * pathname |
445 | int flags |
1379 | int flags |
446 | int mode |
1380 | int mode |
447 | SV * callback |
1381 | SV * callback |
448 | PROTOTYPE: $$$;$ |
1382 | PROTOTYPE: $$$;$ |
449 | CODE: |
1383 | PPCODE: |
450 | { |
1384 | { |
451 | aio_req req; |
1385 | dREQ; |
452 | |
|
|
453 | Newz (0, req, 1, aio_cb); |
|
|
454 | |
|
|
455 | if (!req) |
|
|
456 | croak ("out of memory during aio_req allocation"); |
|
|
457 | |
1386 | |
458 | req->type = REQ_OPEN; |
1387 | req->type = REQ_OPEN; |
459 | req->data = newSVsv (pathname); |
1388 | req->sv1 = newSVsv (pathname); |
460 | req->dataptr = SvPV_nolen (req->data); |
1389 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
461 | req->fd = flags; |
1390 | req->int1 = flags; |
462 | req->mode = mode; |
1391 | req->mode = mode; |
463 | req->callback = SvREFCNT_inc (callback); |
|
|
464 | |
1392 | |
465 | send_req (req); |
1393 | REQ_SEND; |
466 | } |
1394 | } |
467 | |
1395 | |
468 | void |
1396 | void |
469 | aio_close(fh,callback=&PL_sv_undef) |
1397 | aio_close (fh,callback=&PL_sv_undef) |
470 | SV * fh |
1398 | SV * fh |
471 | SV * callback |
1399 | SV * callback |
472 | PROTOTYPE: $;$ |
1400 | PROTOTYPE: $;$ |
473 | ALIAS: |
1401 | ALIAS: |
474 | aio_close = REQ_CLOSE |
1402 | aio_close = REQ_CLOSE |
475 | aio_fsync = REQ_FSYNC |
1403 | aio_fsync = REQ_FSYNC |
476 | aio_fdatasync = REQ_FDATASYNC |
1404 | aio_fdatasync = REQ_FDATASYNC |
477 | CODE: |
1405 | PPCODE: |
478 | { |
1406 | { |
479 | aio_req req; |
1407 | dREQ; |
480 | |
|
|
481 | Newz (0, req, 1, aio_cb); |
|
|
482 | |
|
|
483 | if (!req) |
|
|
484 | croak ("out of memory during aio_req allocation"); |
|
|
485 | |
1408 | |
486 | req->type = ix; |
1409 | req->type = ix; |
487 | req->fh = newSVsv (fh); |
1410 | req->fh = newSVsv (fh); |
488 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
1411 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); |
489 | req->callback = SvREFCNT_inc (callback); |
|
|
490 | |
1412 | |
491 | send_req (req); |
1413 | REQ_SEND (req); |
492 | } |
1414 | } |
493 | |
1415 | |
494 | void |
1416 | void |
495 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
1417 | aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
496 | SV * fh |
1418 | SV * fh |
497 | UV offset |
1419 | UV offset |
498 | IV length |
1420 | UV length |
499 | SV * data |
1421 | SV8 * data |
500 | IV dataoffset |
1422 | UV dataoffset |
501 | SV * callback |
1423 | SV * callback |
502 | ALIAS: |
1424 | ALIAS: |
503 | aio_read = REQ_READ |
1425 | aio_read = REQ_READ |
504 | aio_write = REQ_WRITE |
1426 | aio_write = REQ_WRITE |
505 | PROTOTYPE: $$$$$;$ |
1427 | PROTOTYPE: $$$$$;$ |
506 | CODE: |
1428 | PPCODE: |
507 | { |
1429 | { |
508 | aio_req req; |
|
|
509 | STRLEN svlen; |
1430 | STRLEN svlen; |
510 | char *svptr = SvPV (data, svlen); |
1431 | char *svptr = SvPVbyte (data, svlen); |
511 | |
1432 | |
512 | SvUPGRADE (data, SVt_PV); |
1433 | SvUPGRADE (data, SVt_PV); |
513 | SvPOK_on (data); |
1434 | SvPOK_on (data); |
514 | |
1435 | |
515 | if (dataoffset < 0) |
1436 | if (dataoffset < 0) |
… | |
… | |
525 | length = svlen - dataoffset; |
1446 | length = svlen - dataoffset; |
526 | } |
1447 | } |
527 | else |
1448 | else |
528 | { |
1449 | { |
529 | /* read: grow scalar as necessary */ |
1450 | /* read: grow scalar as necessary */ |
530 | svptr = SvGROW (data, length + dataoffset); |
1451 | svptr = SvGROW (data, length + dataoffset + 1); |
531 | } |
1452 | } |
532 | |
1453 | |
533 | if (length < 0) |
1454 | if (length < 0) |
534 | croak ("length must not be negative"); |
1455 | croak ("length must not be negative"); |
535 | |
1456 | |
536 | Newz (0, req, 1, aio_cb); |
1457 | { |
|
|
1458 | dREQ; |
537 | |
1459 | |
538 | if (!req) |
|
|
539 | croak ("out of memory during aio_req allocation"); |
|
|
540 | |
|
|
541 | req->type = ix; |
1460 | req->type = ix; |
542 | req->fh = newSVsv (fh); |
1461 | req->fh = newSVsv (fh); |
543 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
1462 | req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
544 | : IoOFP (sv_2io (fh))); |
1463 | : IoOFP (sv_2io (fh))); |
545 | req->offset = offset; |
1464 | req->offs = offset; |
546 | req->length = length; |
1465 | req->size = length; |
547 | req->data = SvREFCNT_inc (data); |
1466 | req->sv1 = SvREFCNT_inc (data); |
548 | req->dataptr = (char *)svptr + dataoffset; |
1467 | req->ptr1 = (char *)svptr + dataoffset; |
549 | req->callback = SvREFCNT_inc (callback); |
1468 | req->stroffset = dataoffset; |
550 | |
1469 | |
551 | send_req (req); |
1470 | if (!SvREADONLY (data)) |
552 | } |
1471 | { |
|
|
1472 | SvREADONLY_on (data); |
|
|
1473 | req->flags |= FLAG_SV1_RO_OFF; |
|
|
1474 | } |
553 | |
1475 | |
|
|
1476 | REQ_SEND; |
|
|
1477 | } |
|
|
1478 | } |
|
|
1479 | |
554 | void |
1480 | void |
|
|
1481 | aio_readlink (path,callback=&PL_sv_undef) |
|
|
1482 | SV8 * path |
|
|
1483 | SV * callback |
|
|
1484 | PROTOTYPE: $$;$ |
|
|
1485 | PPCODE: |
|
|
1486 | { |
|
|
1487 | SV *data; |
|
|
1488 | dREQ; |
|
|
1489 | |
|
|
1490 | data = newSV (NAME_MAX); |
|
|
1491 | SvPOK_on (data); |
|
|
1492 | |
|
|
1493 | req->type = REQ_READLINK; |
|
|
1494 | req->fh = newSVsv (path); |
|
|
1495 | req->ptr2 = SvPVbyte_nolen (req->fh); |
|
|
1496 | req->sv1 = data; |
|
|
1497 | req->ptr1 = SvPVbyte_nolen (data); |
|
|
1498 | |
|
|
1499 | REQ_SEND; |
|
|
1500 | } |
|
|
1501 | |
|
|
1502 | void |
|
|
1503 | aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) |
|
|
1504 | SV * out_fh |
|
|
1505 | SV * in_fh |
|
|
1506 | UV in_offset |
|
|
1507 | UV length |
|
|
1508 | SV * callback |
|
|
1509 | PROTOTYPE: $$$$;$ |
|
|
1510 | PPCODE: |
|
|
1511 | { |
|
|
1512 | dREQ; |
|
|
1513 | |
|
|
1514 | req->type = REQ_SENDFILE; |
|
|
1515 | req->fh = newSVsv (out_fh); |
|
|
1516 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
|
|
1517 | req->sv2 = newSVsv (in_fh); |
|
|
1518 | req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
|
|
1519 | req->offs = in_offset; |
|
|
1520 | req->size = length; |
|
|
1521 | |
|
|
1522 | REQ_SEND; |
|
|
1523 | } |
|
|
1524 | |
|
|
1525 | void |
555 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
1526 | aio_readahead (fh,offset,length,callback=&PL_sv_undef) |
556 | SV * fh |
1527 | SV * fh |
557 | UV offset |
1528 | UV offset |
558 | IV length |
1529 | IV length |
559 | SV * callback |
1530 | SV * callback |
560 | PROTOTYPE: $$$;$ |
1531 | PROTOTYPE: $$$;$ |
561 | CODE: |
1532 | PPCODE: |
562 | { |
1533 | { |
563 | aio_req req; |
1534 | dREQ; |
564 | |
|
|
565 | if (length < 0) |
|
|
566 | croak ("length must not be negative"); |
|
|
567 | |
|
|
568 | Newz (0, req, 1, aio_cb); |
|
|
569 | |
|
|
570 | if (!req) |
|
|
571 | croak ("out of memory during aio_req allocation"); |
|
|
572 | |
1535 | |
573 | req->type = REQ_READAHEAD; |
1536 | req->type = REQ_READAHEAD; |
574 | req->fh = newSVsv (fh); |
1537 | req->fh = newSVsv (fh); |
575 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
1538 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); |
576 | req->offset = offset; |
1539 | req->offs = offset; |
577 | req->length = length; |
1540 | req->size = length; |
578 | req->callback = SvREFCNT_inc (callback); |
|
|
579 | |
1541 | |
580 | send_req (req); |
1542 | REQ_SEND; |
581 | } |
1543 | } |
582 | |
1544 | |
583 | void |
1545 | void |
584 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
1546 | aio_stat (fh_or_path,callback=&PL_sv_undef) |
585 | SV * fh_or_path |
1547 | SV8 * fh_or_path |
586 | SV * callback |
1548 | SV * callback |
587 | ALIAS: |
1549 | ALIAS: |
588 | aio_stat = REQ_STAT |
1550 | aio_stat = REQ_STAT |
589 | aio_lstat = REQ_LSTAT |
1551 | aio_lstat = REQ_LSTAT |
590 | CODE: |
1552 | PPCODE: |
591 | { |
1553 | { |
592 | aio_req req; |
1554 | dREQ; |
593 | |
1555 | |
594 | Newz (0, req, 1, aio_cb); |
1556 | req->ptr2 = malloc (sizeof (Stat_t)); |
595 | |
|
|
596 | if (!req) |
1557 | if (!req->ptr2) |
597 | croak ("out of memory during aio_req allocation"); |
1558 | { |
598 | |
1559 | req_free (req); |
599 | New (0, req->statdata, 1, Stat_t); |
|
|
600 | |
|
|
601 | if (!req->statdata) |
|
|
602 | croak ("out of memory during aio_req->statdata allocation"); |
1560 | croak ("out of memory during aio_stat statdata allocation"); |
|
|
1561 | } |
|
|
1562 | |
|
|
1563 | req->flags |= FLAG_PTR2_FREE; |
603 | |
1564 | |
604 | if (SvPOK (fh_or_path)) |
1565 | if (SvPOK (fh_or_path)) |
605 | { |
1566 | { |
606 | req->type = ix; |
1567 | req->type = ix; |
607 | req->data = newSVsv (fh_or_path); |
1568 | req->sv1 = newSVsv (fh_or_path); |
608 | req->dataptr = SvPV_nolen (req->data); |
1569 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
609 | } |
1570 | } |
610 | else |
1571 | else |
611 | { |
1572 | { |
612 | req->type = REQ_FSTAT; |
1573 | req->type = REQ_FSTAT; |
613 | req->fh = newSVsv (fh_or_path); |
1574 | req->fh = newSVsv (fh_or_path); |
614 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
1575 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
615 | } |
1576 | } |
616 | |
1577 | |
617 | req->callback = SvREFCNT_inc (callback); |
1578 | REQ_SEND; |
618 | |
|
|
619 | send_req (req); |
|
|
620 | } |
1579 | } |
621 | |
1580 | |
622 | void |
1581 | void |
623 | aio_unlink(pathname,callback=&PL_sv_undef) |
1582 | aio_unlink (pathname,callback=&PL_sv_undef) |
624 | SV * pathname |
1583 | SV8 * pathname |
625 | SV * callback |
1584 | SV * callback |
|
|
1585 | ALIAS: |
|
|
1586 | aio_unlink = REQ_UNLINK |
|
|
1587 | aio_rmdir = REQ_RMDIR |
|
|
1588 | aio_readdir = REQ_READDIR |
|
|
1589 | PPCODE: |
|
|
1590 | { |
|
|
1591 | dREQ; |
|
|
1592 | |
|
|
1593 | req->type = ix; |
|
|
1594 | req->sv1 = newSVsv (pathname); |
|
|
1595 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1596 | |
|
|
1597 | REQ_SEND; |
|
|
1598 | } |
|
|
1599 | |
|
|
1600 | void |
|
|
1601 | aio_link (oldpath,newpath,callback=&PL_sv_undef) |
|
|
1602 | SV8 * oldpath |
|
|
1603 | SV8 * newpath |
|
|
1604 | SV * callback |
|
|
1605 | ALIAS: |
|
|
1606 | aio_link = REQ_LINK |
|
|
1607 | aio_symlink = REQ_SYMLINK |
|
|
1608 | aio_rename = REQ_RENAME |
|
|
1609 | PPCODE: |
|
|
1610 | { |
|
|
1611 | dREQ; |
|
|
1612 | |
|
|
1613 | req->type = ix; |
|
|
1614 | req->fh = newSVsv (oldpath); |
|
|
1615 | req->ptr2 = SvPVbyte_nolen (req->fh); |
|
|
1616 | req->sv1 = newSVsv (newpath); |
|
|
1617 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1618 | |
|
|
1619 | REQ_SEND; |
|
|
1620 | } |
|
|
1621 | |
|
|
1622 | void |
|
|
1623 | aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) |
|
|
1624 | SV8 * pathname |
|
|
1625 | SV * callback |
|
|
1626 | UV mode |
|
|
1627 | UV dev |
|
|
1628 | PPCODE: |
|
|
1629 | { |
|
|
1630 | dREQ; |
|
|
1631 | |
|
|
1632 | req->type = REQ_MKNOD; |
|
|
1633 | req->sv1 = newSVsv (pathname); |
|
|
1634 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1635 | req->mode = (mode_t)mode; |
|
|
1636 | req->offs = dev; |
|
|
1637 | |
|
|
1638 | REQ_SEND; |
|
|
1639 | } |
|
|
1640 | |
|
|
1641 | void |
|
|
1642 | aio_busy (delay,callback=&PL_sv_undef) |
|
|
1643 | double delay |
|
|
1644 | SV * callback |
|
|
1645 | PPCODE: |
|
|
1646 | { |
|
|
1647 | dREQ; |
|
|
1648 | |
|
|
1649 | req->type = REQ_BUSY; |
|
|
1650 | req->int1 = delay < 0. ? 0 : delay; |
|
|
1651 | req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1); |
|
|
1652 | |
|
|
1653 | REQ_SEND; |
|
|
1654 | } |
|
|
1655 | |
|
|
1656 | void |
|
|
1657 | aio_group (callback=&PL_sv_undef) |
|
|
1658 | SV * callback |
|
|
1659 | PROTOTYPE: ;$ |
|
|
1660 | PPCODE: |
|
|
1661 | { |
|
|
1662 | dREQ; |
|
|
1663 | |
|
|
1664 | req->type = REQ_GROUP; |
|
|
1665 | |
|
|
1666 | req_send (req); |
|
|
1667 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
|
|
1668 | } |
|
|
1669 | |
|
|
1670 | void |
|
|
1671 | aio_nop (callback=&PL_sv_undef) |
|
|
1672 | SV * callback |
|
|
1673 | PPCODE: |
|
|
1674 | { |
|
|
1675 | dREQ; |
|
|
1676 | |
|
|
1677 | req->type = REQ_NOP; |
|
|
1678 | |
|
|
1679 | REQ_SEND; |
|
|
1680 | } |
|
|
1681 | |
|
|
1682 | int |
|
|
1683 | aioreq_pri (int pri = 0) |
|
|
1684 | PROTOTYPE: ;$ |
626 | CODE: |
1685 | CODE: |
627 | { |
1686 | RETVAL = next_pri - PRI_BIAS; |
628 | aio_req req; |
1687 | if (items > 0) |
629 | |
1688 | { |
630 | Newz (0, req, 1, aio_cb); |
1689 | if (pri < PRI_MIN) pri = PRI_MIN; |
631 | |
1690 | if (pri > PRI_MAX) pri = PRI_MAX; |
632 | if (!req) |
1691 | next_pri = pri + PRI_BIAS; |
633 | croak ("out of memory during aio_req allocation"); |
1692 | } |
634 | |
1693 | OUTPUT: |
635 | req->type = REQ_UNLINK; |
1694 | RETVAL |
636 | req->data = newSVsv (pathname); |
|
|
637 | req->dataptr = SvPV_nolen (req->data); |
|
|
638 | req->callback = SvREFCNT_inc (callback); |
|
|
639 | |
|
|
640 | send_req (req); |
|
|
641 | } |
|
|
642 | |
1695 | |
643 | void |
1696 | void |
|
|
1697 | aioreq_nice (int nice = 0) |
|
|
1698 | CODE: |
|
|
1699 | nice = next_pri - nice; |
|
|
1700 | if (nice < PRI_MIN) nice = PRI_MIN; |
|
|
1701 | if (nice > PRI_MAX) nice = PRI_MAX; |
|
|
1702 | next_pri = nice + PRI_BIAS; |
|
|
1703 | |
|
|
1704 | void |
644 | flush() |
1705 | flush () |
645 | PROTOTYPE: |
1706 | PROTOTYPE: |
646 | CODE: |
1707 | CODE: |
647 | while (nreqs) |
1708 | while (nreqs) |
648 | { |
1709 | { |
649 | poll_wait (); |
1710 | poll_wait (); |
650 | poll_cb (); |
1711 | poll_cb (); |
651 | } |
1712 | } |
652 | |
1713 | |
653 | void |
1714 | int |
654 | poll() |
1715 | poll() |
655 | PROTOTYPE: |
1716 | PROTOTYPE: |
656 | CODE: |
1717 | CODE: |
657 | if (nreqs) |
|
|
658 | { |
|
|
659 | poll_wait (); |
1718 | poll_wait (); |
660 | poll_cb (); |
1719 | RETVAL = poll_cb (); |
661 | } |
1720 | OUTPUT: |
|
|
1721 | RETVAL |
662 | |
1722 | |
663 | int |
1723 | int |
664 | poll_fileno() |
1724 | poll_fileno() |
665 | PROTOTYPE: |
1725 | PROTOTYPE: |
666 | CODE: |
1726 | CODE: |
… | |
… | |
678 | |
1738 | |
679 | void |
1739 | void |
680 | poll_wait() |
1740 | poll_wait() |
681 | PROTOTYPE: |
1741 | PROTOTYPE: |
682 | CODE: |
1742 | CODE: |
683 | if (nreqs) |
|
|
684 | poll_wait (); |
1743 | poll_wait (); |
|
|
1744 | |
|
|
1745 | void |
|
|
1746 | setsig (int signum = SIGIO) |
|
|
1747 | PROTOTYPE: ;$ |
|
|
1748 | CODE: |
|
|
1749 | { |
|
|
1750 | if (block_sig_level) |
|
|
1751 | croak ("cannot call IO::AIO::setsig from within aio_block/callback"); |
|
|
1752 | |
|
|
1753 | LOCK (reslock); |
|
|
1754 | main_tid = pthread_self (); |
|
|
1755 | main_sig = signum; |
|
|
1756 | UNLOCK (reslock); |
|
|
1757 | |
|
|
1758 | if (main_sig && npending) |
|
|
1759 | pthread_kill (main_tid, main_sig); |
|
|
1760 | } |
|
|
1761 | |
|
|
1762 | void |
|
|
1763 | aio_block (SV *cb) |
|
|
1764 | PROTOTYPE: & |
|
|
1765 | PPCODE: |
|
|
1766 | { |
|
|
1767 | int count; |
|
|
1768 | |
|
|
1769 | block_sig (); |
|
|
1770 | PUSHMARK (SP); |
|
|
1771 | PUTBACK; |
|
|
1772 | count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL); |
|
|
1773 | SPAGAIN; |
|
|
1774 | unblock_sig (); |
|
|
1775 | |
|
|
1776 | if (SvTRUE (ERRSV)) |
|
|
1777 | croak (0); |
|
|
1778 | |
|
|
1779 | XSRETURN (count); |
|
|
1780 | } |
685 | |
1781 | |
686 | int |
1782 | int |
687 | nreqs() |
1783 | nreqs() |
688 | PROTOTYPE: |
1784 | PROTOTYPE: |
689 | CODE: |
1785 | CODE: |
690 | RETVAL = nreqs; |
1786 | RETVAL = nreqs; |
691 | OUTPUT: |
1787 | OUTPUT: |
692 | RETVAL |
1788 | RETVAL |
693 | |
1789 | |
|
|
1790 | int |
|
|
1791 | nready() |
|
|
1792 | PROTOTYPE: |
|
|
1793 | CODE: |
|
|
1794 | RETVAL = get_nready (); |
|
|
1795 | OUTPUT: |
|
|
1796 | RETVAL |
|
|
1797 | |
|
|
1798 | int |
|
|
1799 | npending() |
|
|
1800 | PROTOTYPE: |
|
|
1801 | CODE: |
|
|
1802 | RETVAL = get_npending (); |
|
|
1803 | OUTPUT: |
|
|
1804 | RETVAL |
|
|
1805 | |
|
|
1806 | int |
|
|
1807 | nthreads() |
|
|
1808 | PROTOTYPE: |
|
|
1809 | CODE: |
|
|
1810 | if (WORDACCESS_UNSAFE) LOCK (wrklock); |
|
|
1811 | RETVAL = started; |
|
|
1812 | if (WORDACCESS_UNSAFE) UNLOCK (wrklock); |
|
|
1813 | OUTPUT: |
|
|
1814 | RETVAL |
|
|
1815 | |
|
|
1816 | PROTOTYPES: DISABLE |
|
|
1817 | |
|
|
1818 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
|
|
1819 | |
|
|
1820 | void |
|
|
1821 | cancel (aio_req_ornot req) |
|
|
1822 | CODE: |
|
|
1823 | req_cancel (req); |
|
|
1824 | |
|
|
1825 | void |
|
|
1826 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
|
|
1827 | CODE: |
|
|
1828 | SvREFCNT_dec (req->callback); |
|
|
1829 | req->callback = newSVsv (callback); |
|
|
1830 | |
|
|
1831 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
|
|
1832 | |
|
|
1833 | void |
|
|
1834 | add (aio_req grp, ...) |
|
|
1835 | PPCODE: |
|
|
1836 | { |
|
|
1837 | int i; |
|
|
1838 | aio_req req; |
|
|
1839 | |
|
|
1840 | if (main_sig && !block_sig_level) |
|
|
1841 | croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use"); |
|
|
1842 | |
|
|
1843 | if (grp->int1 == 2) |
|
|
1844 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
|
|
1845 | |
|
|
1846 | for (i = 1; i < items; ++i ) |
|
|
1847 | { |
|
|
1848 | if (GIMME_V != G_VOID) |
|
|
1849 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
|
|
1850 | |
|
|
1851 | req = SvAIO_REQ (ST (i)); |
|
|
1852 | |
|
|
1853 | if (req) |
|
|
1854 | { |
|
|
1855 | ++grp->size; |
|
|
1856 | req->grp = grp; |
|
|
1857 | |
|
|
1858 | req->grp_prev = 0; |
|
|
1859 | req->grp_next = grp->grp_first; |
|
|
1860 | |
|
|
1861 | if (grp->grp_first) |
|
|
1862 | grp->grp_first->grp_prev = req; |
|
|
1863 | |
|
|
1864 | grp->grp_first = req; |
|
|
1865 | } |
|
|
1866 | } |
|
|
1867 | } |
|
|
1868 | |
|
|
1869 | void |
|
|
1870 | cancel_subs (aio_req_ornot req) |
|
|
1871 | CODE: |
|
|
1872 | req_cancel_subs (req); |
|
|
1873 | |
|
|
1874 | void |
|
|
1875 | result (aio_req grp, ...) |
|
|
1876 | CODE: |
|
|
1877 | { |
|
|
1878 | int i; |
|
|
1879 | AV *av; |
|
|
1880 | |
|
|
1881 | grp->errorno = errno; |
|
|
1882 | |
|
|
1883 | av = newAV (); |
|
|
1884 | |
|
|
1885 | for (i = 1; i < items; ++i ) |
|
|
1886 | av_push (av, newSVsv (ST (i))); |
|
|
1887 | |
|
|
1888 | SvREFCNT_dec (grp->sv1); |
|
|
1889 | grp->sv1 = (SV *)av; |
|
|
1890 | } |
|
|
1891 | |
|
|
1892 | void |
|
|
1893 | errno (aio_req grp, int errorno = errno) |
|
|
1894 | CODE: |
|
|
1895 | grp->errorno = errorno; |
|
|
1896 | |
|
|
1897 | void |
|
|
1898 | limit (aio_req grp, int limit) |
|
|
1899 | CODE: |
|
|
1900 | grp->int2 = limit; |
|
|
1901 | aio_grp_feed (grp); |
|
|
1902 | |
|
|
1903 | void |
|
|
1904 | feed (aio_req grp, SV *callback=&PL_sv_undef) |
|
|
1905 | CODE: |
|
|
1906 | { |
|
|
1907 | SvREFCNT_dec (grp->sv2); |
|
|
1908 | grp->sv2 = newSVsv (callback); |
|
|
1909 | |
|
|
1910 | if (grp->int2 <= 0) |
|
|
1911 | grp->int2 = 2; |
|
|
1912 | |
|
|
1913 | aio_grp_feed (grp); |
|
|
1914 | } |
|
|
1915 | |