1 | /* |
1 | /* |
2 | * libeio implementation |
2 | * libeio implementation |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libeio@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * |
9 | * |
… | |
… | |
35 | * and other provisions required by the GPL. If you do not delete the |
35 | * and other provisions required by the GPL. If you do not delete the |
36 | * provisions above, a recipient may use your version of this file under |
36 | * provisions above, a recipient may use your version of this file under |
37 | * either the BSD or the GPL. |
37 | * either the BSD or the GPL. |
38 | */ |
38 | */ |
39 | |
39 | |
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40 | #ifndef _WIN32 |
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41 | # include "config.h" |
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42 | #endif |
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43 | |
40 | #include "eio.h" |
44 | #include "eio.h" |
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45 | #include "ecb.h" |
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46 | |
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47 | #ifdef EIO_STACKSIZE |
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48 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
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49 | #endif |
41 | #include "xthread.h" |
50 | #include "xthread.h" |
42 | |
51 | |
43 | #include <errno.h> |
52 | #include <errno.h> |
44 | #include <stddef.h> |
53 | #include <stddef.h> |
45 | #include <stdlib.h> |
54 | #include <stdlib.h> |
… | |
… | |
49 | #include <sys/stat.h> |
58 | #include <sys/stat.h> |
50 | #include <limits.h> |
59 | #include <limits.h> |
51 | #include <fcntl.h> |
60 | #include <fcntl.h> |
52 | #include <assert.h> |
61 | #include <assert.h> |
53 | |
62 | |
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63 | /* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */ |
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64 | /* intptr_t only comes from stdint.h, says idiot openbsd coder */ |
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65 | #if HAVE_STDINT_H |
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66 | # include <stdint.h> |
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67 | #endif |
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68 | |
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69 | #ifndef ECANCELED |
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70 | # define ECANCELED EDOM |
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71 | #endif |
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72 | #ifndef ELOOP |
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73 | # define ELOOP EDOM |
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74 | #endif |
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75 | |
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76 | static void eio_destroy (eio_req *req); |
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77 | |
54 | #ifndef EIO_FINISH |
78 | #ifndef EIO_FINISH |
55 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
79 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
56 | #endif |
80 | #endif |
57 | |
81 | |
58 | #ifndef EIO_DESTROY |
82 | #ifndef EIO_DESTROY |
… | |
… | |
61 | |
85 | |
62 | #ifndef EIO_FEED |
86 | #ifndef EIO_FEED |
63 | # define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) |
87 | # define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) |
64 | #endif |
88 | #endif |
65 | |
89 | |
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90 | #ifndef EIO_FD_TO_WIN32_HANDLE |
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91 | # define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
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92 | #endif |
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93 | #ifndef EIO_WIN32_HANDLE_TO_FD |
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94 | # define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
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95 | #endif |
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96 | |
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97 | #define EIO_ERRNO(errval,retval) ((errno = errval), retval) |
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98 | |
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99 | #define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1) |
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100 | |
66 | #ifdef _WIN32 |
101 | #ifdef _WIN32 |
67 | |
102 | |
68 | /*doh*/ |
103 | #undef PAGESIZE |
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104 | #define PAGESIZE 4096 /* GetSystemInfo? */ |
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105 | |
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106 | #ifdef EIO_STRUCT_STATI64 |
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107 | #define stat(path,buf) _stati64 (path,buf) |
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108 | #define fstat(fd,buf) _fstati64 (path,buf) |
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109 | #endif |
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110 | #define lstat(path,buf) stat (path,buf) |
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111 | #define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1)) |
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112 | #define mkdir(path,mode) _mkdir (path) |
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113 | #define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1)) |
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114 | |
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115 | #define chmod(path,mode) _chmod (path, mode) |
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116 | #define dup(fd) _dup (fd) |
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117 | #define dup2(fd1,fd2) _dup2 (fd1, fd2) |
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118 | |
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119 | #define fchmod(fd,mode) EIO_ENOSYS () |
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120 | #define chown(path,uid,gid) EIO_ENOSYS () |
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121 | #define fchown(fd,uid,gid) EIO_ENOSYS () |
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122 | #define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */ |
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123 | #define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */ |
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124 | #define mknod(path,mode,dev) EIO_ENOSYS () |
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125 | #define sync() EIO_ENOSYS () |
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126 | #define readlink(path,buf,s) EIO_ENOSYS () |
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127 | #define statvfs(path,buf) EIO_ENOSYS () |
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128 | #define fstatvfs(fd,buf) EIO_ENOSYS () |
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129 | |
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130 | /* we could even stat and see if it exists */ |
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131 | static int |
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132 | symlink (const char *old, const char *neu) |
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133 | { |
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134 | #if WINVER >= 0x0600 |
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135 | if (CreateSymbolicLink (neu, old, 1)) |
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136 | return 0; |
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137 | |
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138 | if (CreateSymbolicLink (neu, old, 0)) |
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139 | return 0; |
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140 | #endif |
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141 | |
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142 | return EIO_ERRNO (ENOENT, -1); |
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143 | } |
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144 | |
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145 | /* POSIX API only */ |
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146 | #define CreateHardLink(neu,old,flags) 0 |
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147 | #define CreateSymbolicLink(neu,old,flags) 0 |
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148 | |
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149 | struct statvfs |
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150 | { |
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151 | int dummy; |
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152 | }; |
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153 | |
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154 | #define DT_DIR EIO_DT_DIR |
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155 | #define DT_REG EIO_DT_REG |
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156 | #define D_NAME(entp) entp.cFileName |
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157 | #define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG) |
69 | |
158 | |
70 | #else |
159 | #else |
71 | |
160 | |
72 | # include "config.h" |
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73 | # include <sys/time.h> |
161 | #include <sys/time.h> |
74 | # include <sys/select.h> |
162 | #include <sys/select.h> |
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163 | #include <sys/statvfs.h> |
75 | # include <unistd.h> |
164 | #include <unistd.h> |
76 | # include <utime.h> |
165 | #include <utime.h> |
77 | # include <signal.h> |
166 | #include <signal.h> |
78 | # include <dirent.h> |
167 | #include <dirent.h> |
79 | |
168 | |
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169 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
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170 | #include <sys/mman.h> |
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171 | #endif |
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172 | |
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173 | #define D_NAME(entp) entp->d_name |
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174 | |
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175 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
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176 | #if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
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177 | #define _DIRENT_HAVE_D_TYPE /* sigh */ |
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178 | #define D_INO(de) (de)->d_fileno |
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179 | #define D_NAMLEN(de) (de)->d_namlen |
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180 | #elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 |
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181 | #define D_INO(de) (de)->d_ino |
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182 | #endif |
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183 | |
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184 | #ifdef _D_EXACT_NAMLEN |
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185 | #undef D_NAMLEN |
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186 | #define D_NAMLEN(de) _D_EXACT_NAMLEN (de) |
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187 | #endif |
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188 | |
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189 | #ifdef _DIRENT_HAVE_D_TYPE |
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190 | #define D_TYPE(de) (de)->d_type |
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191 | #endif |
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192 | |
80 | # ifndef EIO_STRUCT_DIRENT |
193 | #ifndef EIO_STRUCT_DIRENT |
81 | # define EIO_STRUCT_DIRENT struct dirent |
194 | #define EIO_STRUCT_DIRENT struct dirent |
82 | # endif |
195 | #endif |
83 | |
196 | |
84 | #endif |
197 | #endif |
85 | |
198 | |
86 | #if HAVE_SENDFILE |
199 | #if HAVE_SENDFILE |
87 | # if __linux |
200 | # if __linux |
88 | # include <sys/sendfile.h> |
201 | # include <sys/sendfile.h> |
89 | # elif __freebsd |
202 | # elif __FreeBSD__ || defined __APPLE__ |
90 | # include <sys/socket.h> |
203 | # include <sys/socket.h> |
91 | # include <sys/uio.h> |
204 | # include <sys/uio.h> |
92 | # elif __hpux |
205 | # elif __hpux |
93 | # include <sys/socket.h> |
206 | # include <sys/socket.h> |
94 | # elif __solaris /* not yet */ |
207 | # elif __solaris |
95 | # include <sys/sendfile.h> |
208 | # include <sys/sendfile.h> |
96 | # else |
209 | # else |
97 | # error sendfile support requested but not available |
210 | # error sendfile support requested but not available |
98 | # endif |
211 | # endif |
99 | #endif |
212 | #endif |
100 | |
213 | |
101 | /* number of seconds after which an idle threads exit */ |
214 | #ifndef D_TYPE |
102 | #define IDLE_TIMEOUT 10 |
215 | # define D_TYPE(de) 0 |
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216 | #endif |
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217 | #ifndef D_INO |
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218 | # define D_INO(de) 0 |
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219 | #endif |
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220 | #ifndef D_NAMLEN |
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221 | # define D_NAMLEN(entp) strlen (D_NAME (entp)) |
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222 | #endif |
103 | |
223 | |
104 | /* used for struct dirent, AIX doesn't provide it */ |
224 | /* used for struct dirent, AIX doesn't provide it */ |
105 | #ifndef NAME_MAX |
225 | #ifndef NAME_MAX |
106 | # define NAME_MAX 4096 |
226 | # define NAME_MAX 4096 |
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227 | #endif |
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228 | |
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229 | /* used for readlink etc. */ |
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230 | #ifndef PATH_MAX |
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231 | # define PATH_MAX 4096 |
107 | #endif |
232 | #endif |
108 | |
233 | |
109 | /* buffer size for various temporary buffers */ |
234 | /* buffer size for various temporary buffers */ |
110 | #define EIO_BUFSIZE 65536 |
235 | #define EIO_BUFSIZE 65536 |
111 | |
236 | |
… | |
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118 | if (!eio_buf) \ |
243 | if (!eio_buf) \ |
119 | return -1; |
244 | return -1; |
120 | |
245 | |
121 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
246 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
122 | |
247 | |
123 | /*****************************************************************************/ |
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124 | |
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125 | #if __GNUC__ >= 3 |
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126 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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127 | #else |
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128 | # define expect(expr,value) (expr) |
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129 | #endif |
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130 | |
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131 | #define expect_false(expr) expect ((expr) != 0, 0) |
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132 | #define expect_true(expr) expect ((expr) != 0, 1) |
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133 | |
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134 | /*****************************************************************************/ |
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135 | |
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136 | #define ETP_PRI_MIN EIO_PRI_MIN |
248 | #define ETP_PRI_MIN EIO_PRI_MIN |
137 | #define ETP_PRI_MAX EIO_PRI_MAX |
249 | #define ETP_PRI_MAX EIO_PRI_MAX |
138 | |
250 | |
139 | struct etp_worker; |
251 | struct etp_worker; |
140 | |
252 | |
… | |
… | |
148 | #define ETP_WORKER_CLEAR(req) \ |
260 | #define ETP_WORKER_CLEAR(req) \ |
149 | if (wrk->dbuf) \ |
261 | if (wrk->dbuf) \ |
150 | { \ |
262 | { \ |
151 | free (wrk->dbuf); \ |
263 | free (wrk->dbuf); \ |
152 | wrk->dbuf = 0; \ |
264 | wrk->dbuf = 0; \ |
153 | } \ |
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154 | \ |
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155 | if (wrk->dirp) \ |
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156 | { \ |
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157 | closedir (wrk->dirp); \ |
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158 | wrk->dirp = 0; \ |
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159 | } |
265 | } |
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266 | |
160 | #define ETP_WORKER_COMMON \ |
267 | #define ETP_WORKER_COMMON \ |
161 | void *dbuf; \ |
268 | void *dbuf; |
162 | DIR *dirp; |
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163 | |
269 | |
164 | /*****************************************************************************/ |
270 | /*****************************************************************************/ |
165 | |
271 | |
166 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
272 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
167 | |
273 | |
168 | /* calculcate time difference in ~1/EIO_TICKS of a second */ |
274 | /* calculate time difference in ~1/EIO_TICKS of a second */ |
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275 | ecb_inline int |
169 | static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
276 | tvdiff (struct timeval *tv1, struct timeval *tv2) |
170 | { |
277 | { |
171 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
278 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
172 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
279 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
173 | } |
280 | } |
174 | |
281 | |
… | |
… | |
181 | static unsigned int max_poll_reqs; /* reslock */ |
288 | static unsigned int max_poll_reqs; /* reslock */ |
182 | |
289 | |
183 | static volatile unsigned int nreqs; /* reqlock */ |
290 | static volatile unsigned int nreqs; /* reqlock */ |
184 | static volatile unsigned int nready; /* reqlock */ |
291 | static volatile unsigned int nready; /* reqlock */ |
185 | static volatile unsigned int npending; /* reqlock */ |
292 | static volatile unsigned int npending; /* reqlock */ |
186 | static volatile unsigned int max_idle = 4; |
293 | static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */ |
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294 | static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */ |
187 | |
295 | |
188 | static mutex_t wrklock = X_MUTEX_INIT; |
296 | static xmutex_t wrklock; |
189 | static mutex_t reslock = X_MUTEX_INIT; |
297 | static xmutex_t reslock; |
190 | static mutex_t reqlock = X_MUTEX_INIT; |
298 | static xmutex_t reqlock; |
191 | static cond_t reqwait = X_COND_INIT; |
299 | static xcond_t reqwait; |
192 | |
300 | |
193 | #if !HAVE_PREADWRITE |
301 | #if !HAVE_PREADWRITE |
194 | /* |
302 | /* |
195 | * make our pread/pwrite emulation safe against themselves, but not against |
303 | * make our pread/pwrite emulation safe against themselves, but not against |
196 | * normal read/write by using a mutex. slows down execution a lot, |
304 | * normal read/write by using a mutex. slows down execution a lot, |
197 | * but that's your problem, not mine. |
305 | * but that's your problem, not mine. |
198 | */ |
306 | */ |
199 | static mutex_t preadwritelock = X_MUTEX_INIT; |
307 | static xmutex_t preadwritelock; |
200 | #endif |
308 | #endif |
201 | |
309 | |
202 | typedef struct etp_worker |
310 | typedef struct etp_worker |
203 | { |
311 | { |
204 | /* locked by wrklock */ |
312 | /* locked by wrklock */ |
205 | struct etp_worker *prev, *next; |
313 | struct etp_worker *prev, *next; |
206 | |
314 | |
207 | thread_t tid; |
315 | xthread_t tid; |
208 | |
316 | |
209 | /* locked by reslock, reqlock or wrklock */ |
317 | /* locked by reslock, reqlock or wrklock */ |
210 | ETP_REQ *req; /* currently processed request */ |
318 | ETP_REQ *req; /* currently processed request */ |
211 | |
319 | |
212 | ETP_WORKER_COMMON |
320 | ETP_WORKER_COMMON |
213 | } etp_worker; |
321 | } etp_worker; |
214 | |
322 | |
215 | static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */ |
323 | static etp_worker wrk_first; /* NOT etp */ |
216 | |
324 | |
217 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
325 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
218 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
326 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
219 | |
327 | |
220 | /* worker threads management */ |
328 | /* worker threads management */ |
221 | |
329 | |
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330 | static void ecb_cold |
222 | static void etp_worker_clear (etp_worker *wrk) |
331 | etp_worker_clear (etp_worker *wrk) |
223 | { |
332 | { |
224 | ETP_WORKER_CLEAR (wrk); |
333 | ETP_WORKER_CLEAR (wrk); |
225 | } |
334 | } |
226 | |
335 | |
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336 | static void ecb_cold |
227 | static void etp_worker_free (etp_worker *wrk) |
337 | etp_worker_free (etp_worker *wrk) |
228 | { |
338 | { |
229 | wrk->next->prev = wrk->prev; |
339 | wrk->next->prev = wrk->prev; |
230 | wrk->prev->next = wrk->next; |
340 | wrk->prev->next = wrk->next; |
231 | |
341 | |
232 | free (wrk); |
342 | free (wrk); |
233 | } |
343 | } |
234 | |
344 | |
235 | static unsigned int etp_nreqs (void) |
345 | static unsigned int |
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346 | etp_nreqs (void) |
236 | { |
347 | { |
237 | int retval; |
348 | int retval; |
238 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
349 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
239 | retval = nreqs; |
350 | retval = nreqs; |
240 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
351 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
241 | return retval; |
352 | return retval; |
242 | } |
353 | } |
243 | |
354 | |
244 | static unsigned int etp_nready (void) |
355 | static unsigned int |
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356 | etp_nready (void) |
245 | { |
357 | { |
246 | unsigned int retval; |
358 | unsigned int retval; |
247 | |
359 | |
248 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
360 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
249 | retval = nready; |
361 | retval = nready; |
250 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
362 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
251 | |
363 | |
252 | return retval; |
364 | return retval; |
253 | } |
365 | } |
254 | |
366 | |
255 | static unsigned int etp_npending (void) |
367 | static unsigned int |
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368 | etp_npending (void) |
256 | { |
369 | { |
257 | unsigned int retval; |
370 | unsigned int retval; |
258 | |
371 | |
259 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
372 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
260 | retval = npending; |
373 | retval = npending; |
261 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
374 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
262 | |
375 | |
263 | return retval; |
376 | return retval; |
264 | } |
377 | } |
265 | |
378 | |
266 | static unsigned int etp_nthreads (void) |
379 | static unsigned int |
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380 | etp_nthreads (void) |
267 | { |
381 | { |
268 | unsigned int retval; |
382 | unsigned int retval; |
269 | |
383 | |
270 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
384 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
271 | retval = started; |
385 | retval = started; |
… | |
… | |
285 | } etp_reqq; |
399 | } etp_reqq; |
286 | |
400 | |
287 | static etp_reqq req_queue; |
401 | static etp_reqq req_queue; |
288 | static etp_reqq res_queue; |
402 | static etp_reqq res_queue; |
289 | |
403 | |
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404 | static void ecb_noinline ecb_cold |
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405 | reqq_init (etp_reqq *q) |
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406 | { |
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407 | int pri; |
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408 | |
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409 | for (pri = 0; pri < ETP_NUM_PRI; ++pri) |
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410 | q->qs[pri] = q->qe[pri] = 0; |
|
|
411 | |
|
|
412 | q->size = 0; |
|
|
413 | } |
|
|
414 | |
|
|
415 | static int ecb_noinline |
290 | static int reqq_push (etp_reqq *q, ETP_REQ *req) |
416 | reqq_push (etp_reqq *q, ETP_REQ *req) |
291 | { |
417 | { |
292 | int pri = req->pri; |
418 | int pri = req->pri; |
293 | req->next = 0; |
419 | req->next = 0; |
294 | |
420 | |
295 | if (q->qe[pri]) |
421 | if (q->qe[pri]) |
… | |
… | |
301 | q->qe[pri] = q->qs[pri] = req; |
427 | q->qe[pri] = q->qs[pri] = req; |
302 | |
428 | |
303 | return q->size++; |
429 | return q->size++; |
304 | } |
430 | } |
305 | |
431 | |
|
|
432 | static ETP_REQ * ecb_noinline |
306 | static ETP_REQ *reqq_shift (etp_reqq *q) |
433 | reqq_shift (etp_reqq *q) |
307 | { |
434 | { |
308 | int pri; |
435 | int pri; |
309 | |
436 | |
310 | if (!q->size) |
437 | if (!q->size) |
311 | return 0; |
438 | return 0; |
… | |
… | |
326 | } |
453 | } |
327 | |
454 | |
328 | abort (); |
455 | abort (); |
329 | } |
456 | } |
330 | |
457 | |
331 | static void etp_atfork_prepare (void) |
458 | static int ecb_cold |
|
|
459 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
332 | { |
460 | { |
333 | X_LOCK (wrklock); |
461 | X_MUTEX_CREATE (wrklock); |
334 | X_LOCK (reqlock); |
462 | X_MUTEX_CREATE (reslock); |
335 | X_LOCK (reslock); |
463 | X_MUTEX_CREATE (reqlock); |
336 | #if !HAVE_PREADWRITE |
464 | X_COND_CREATE (reqwait); |
337 | X_LOCK (preadwritelock); |
|
|
338 | #endif |
|
|
339 | } |
|
|
340 | |
465 | |
341 | static void etp_atfork_parent (void) |
466 | reqq_init (&req_queue); |
342 | { |
467 | reqq_init (&res_queue); |
343 | #if !HAVE_PREADWRITE |
|
|
344 | X_UNLOCK (preadwritelock); |
|
|
345 | #endif |
|
|
346 | X_UNLOCK (reslock); |
|
|
347 | X_UNLOCK (reqlock); |
|
|
348 | X_UNLOCK (wrklock); |
|
|
349 | } |
|
|
350 | |
468 | |
351 | static void etp_atfork_child (void) |
469 | wrk_first.next = |
352 | { |
470 | wrk_first.prev = &wrk_first; |
353 | ETP_REQ *prv; |
|
|
354 | |
|
|
355 | while ((prv = reqq_shift (&req_queue))) |
|
|
356 | ETP_DESTROY (prv); |
|
|
357 | |
|
|
358 | while ((prv = reqq_shift (&res_queue))) |
|
|
359 | ETP_DESTROY (prv); |
|
|
360 | |
|
|
361 | while (wrk_first.next != &wrk_first) |
|
|
362 | { |
|
|
363 | etp_worker *wrk = wrk_first.next; |
|
|
364 | |
|
|
365 | if (wrk->req) |
|
|
366 | ETP_DESTROY (wrk->req); |
|
|
367 | |
|
|
368 | etp_worker_clear (wrk); |
|
|
369 | etp_worker_free (wrk); |
|
|
370 | } |
|
|
371 | |
471 | |
372 | started = 0; |
472 | started = 0; |
373 | idle = 0; |
473 | idle = 0; |
374 | nreqs = 0; |
474 | nreqs = 0; |
375 | nready = 0; |
475 | nready = 0; |
376 | npending = 0; |
476 | npending = 0; |
377 | |
477 | |
378 | etp_atfork_parent (); |
|
|
379 | } |
|
|
380 | |
|
|
381 | static void |
|
|
382 | etp_once_init (void) |
|
|
383 | { |
|
|
384 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
|
|
385 | } |
|
|
386 | |
|
|
387 | static int |
|
|
388 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
|
|
389 | { |
|
|
390 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
|
|
391 | |
|
|
392 | pthread_once (&doinit, etp_once_init); |
|
|
393 | |
|
|
394 | want_poll_cb = want_poll; |
478 | want_poll_cb = want_poll; |
395 | done_poll_cb = done_poll; |
479 | done_poll_cb = done_poll; |
396 | |
480 | |
397 | return 0; |
481 | return 0; |
398 | } |
482 | } |
399 | |
483 | |
400 | X_THREAD_PROC (etp_proc); |
484 | X_THREAD_PROC (etp_proc); |
401 | |
485 | |
|
|
486 | static void ecb_cold |
402 | static void etp_start_thread (void) |
487 | etp_start_thread (void) |
403 | { |
488 | { |
404 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
489 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
405 | |
490 | |
406 | /*TODO*/ |
491 | /*TODO*/ |
407 | assert (("unable to allocate worker thread data", wrk)); |
492 | assert (("unable to allocate worker thread data", wrk)); |
… | |
… | |
420 | free (wrk); |
505 | free (wrk); |
421 | |
506 | |
422 | X_UNLOCK (wrklock); |
507 | X_UNLOCK (wrklock); |
423 | } |
508 | } |
424 | |
509 | |
|
|
510 | static void |
425 | static void etp_maybe_start_thread (void) |
511 | etp_maybe_start_thread (void) |
426 | { |
512 | { |
427 | if (expect_true (etp_nthreads () >= wanted)) |
513 | if (ecb_expect_true (etp_nthreads () >= wanted)) |
428 | return; |
514 | return; |
429 | |
515 | |
430 | /* todo: maybe use idle here, but might be less exact */ |
516 | /* todo: maybe use idle here, but might be less exact */ |
431 | if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
517 | if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
432 | return; |
518 | return; |
433 | |
519 | |
434 | etp_start_thread (); |
520 | etp_start_thread (); |
435 | } |
521 | } |
436 | |
522 | |
|
|
523 | static void ecb_cold |
437 | static void etp_end_thread (void) |
524 | etp_end_thread (void) |
438 | { |
525 | { |
439 | eio_req *req = calloc (1, sizeof (eio_req)); |
526 | eio_req *req = calloc (1, sizeof (eio_req)); |
440 | |
527 | |
441 | req->type = -1; |
528 | req->type = -1; |
442 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
529 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
… | |
… | |
449 | X_LOCK (wrklock); |
536 | X_LOCK (wrklock); |
450 | --started; |
537 | --started; |
451 | X_UNLOCK (wrklock); |
538 | X_UNLOCK (wrklock); |
452 | } |
539 | } |
453 | |
540 | |
454 | static int etp_poll (void) |
541 | static int |
|
|
542 | etp_poll (void) |
455 | { |
543 | { |
456 | unsigned int maxreqs; |
544 | unsigned int maxreqs; |
457 | unsigned int maxtime; |
545 | unsigned int maxtime; |
458 | struct timeval tv_start, tv_now; |
546 | struct timeval tv_start, tv_now; |
459 | |
547 | |
… | |
… | |
489 | |
577 | |
490 | X_LOCK (reqlock); |
578 | X_LOCK (reqlock); |
491 | --nreqs; |
579 | --nreqs; |
492 | X_UNLOCK (reqlock); |
580 | X_UNLOCK (reqlock); |
493 | |
581 | |
494 | if (expect_false (req->type == EIO_GROUP && req->size)) |
582 | if (ecb_expect_false (req->type == EIO_GROUP && req->size)) |
495 | { |
583 | { |
496 | req->int1 = 1; /* mark request as delayed */ |
584 | req->int1 = 1; /* mark request as delayed */ |
497 | continue; |
585 | continue; |
498 | } |
586 | } |
499 | else |
587 | else |
500 | { |
588 | { |
501 | int res = ETP_FINISH (req); |
589 | int res = ETP_FINISH (req); |
502 | if (expect_false (res)) |
590 | if (ecb_expect_false (res)) |
503 | return res; |
591 | return res; |
504 | } |
592 | } |
505 | |
593 | |
506 | if (expect_false (maxreqs && !--maxreqs)) |
594 | if (ecb_expect_false (maxreqs && !--maxreqs)) |
507 | break; |
595 | break; |
508 | |
596 | |
509 | if (maxtime) |
597 | if (maxtime) |
510 | { |
598 | { |
511 | gettimeofday (&tv_now, 0); |
599 | gettimeofday (&tv_now, 0); |
… | |
… | |
517 | |
605 | |
518 | errno = EAGAIN; |
606 | errno = EAGAIN; |
519 | return -1; |
607 | return -1; |
520 | } |
608 | } |
521 | |
609 | |
|
|
610 | static void |
522 | static void etp_cancel (ETP_REQ *req) |
611 | etp_cancel (ETP_REQ *req) |
523 | { |
612 | { |
524 | X_LOCK (wrklock); |
613 | req->cancelled = 1; |
525 | req->flags |= EIO_FLAG_CANCELLED; |
|
|
526 | X_UNLOCK (wrklock); |
|
|
527 | |
614 | |
528 | eio_grp_cancel (req); |
615 | eio_grp_cancel (req); |
529 | } |
616 | } |
530 | |
617 | |
|
|
618 | static void |
531 | static void etp_submit (ETP_REQ *req) |
619 | etp_submit (ETP_REQ *req) |
532 | { |
620 | { |
533 | req->pri -= ETP_PRI_MIN; |
621 | req->pri -= ETP_PRI_MIN; |
534 | |
622 | |
535 | if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
623 | if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
536 | if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
624 | if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
537 | |
625 | |
538 | if (expect_false (req->type == EIO_GROUP)) |
626 | if (ecb_expect_false (req->type == EIO_GROUP)) |
539 | { |
627 | { |
540 | /* I hope this is worth it :/ */ |
628 | /* I hope this is worth it :/ */ |
541 | X_LOCK (reqlock); |
629 | X_LOCK (reqlock); |
542 | ++nreqs; |
630 | ++nreqs; |
543 | X_UNLOCK (reqlock); |
631 | X_UNLOCK (reqlock); |
… | |
… | |
562 | |
650 | |
563 | etp_maybe_start_thread (); |
651 | etp_maybe_start_thread (); |
564 | } |
652 | } |
565 | } |
653 | } |
566 | |
654 | |
|
|
655 | static void ecb_cold |
567 | static void etp_set_max_poll_time (double nseconds) |
656 | etp_set_max_poll_time (double nseconds) |
568 | { |
657 | { |
569 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
658 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
570 | max_poll_time = nseconds; |
659 | max_poll_time = nseconds * EIO_TICKS; |
571 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
660 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
572 | } |
661 | } |
573 | |
662 | |
|
|
663 | static void ecb_cold |
574 | static void etp_set_max_poll_reqs (unsigned int maxreqs) |
664 | etp_set_max_poll_reqs (unsigned int maxreqs) |
575 | { |
665 | { |
576 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
666 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
577 | max_poll_reqs = maxreqs; |
667 | max_poll_reqs = maxreqs; |
578 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
668 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
579 | } |
669 | } |
580 | |
670 | |
|
|
671 | static void ecb_cold |
581 | static void etp_set_max_idle (unsigned int nthreads) |
672 | etp_set_max_idle (unsigned int nthreads) |
582 | { |
673 | { |
583 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
674 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
584 | max_idle = nthreads <= 0 ? 1 : nthreads; |
675 | max_idle = nthreads; |
585 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
676 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
586 | } |
677 | } |
587 | |
678 | |
|
|
679 | static void ecb_cold |
|
|
680 | etp_set_idle_timeout (unsigned int seconds) |
|
|
681 | { |
|
|
682 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
683 | idle_timeout = seconds; |
|
|
684 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
685 | } |
|
|
686 | |
|
|
687 | static void ecb_cold |
588 | static void etp_set_min_parallel (unsigned int nthreads) |
688 | etp_set_min_parallel (unsigned int nthreads) |
589 | { |
689 | { |
590 | if (wanted < nthreads) |
690 | if (wanted < nthreads) |
591 | wanted = nthreads; |
691 | wanted = nthreads; |
592 | } |
692 | } |
593 | |
693 | |
|
|
694 | static void ecb_cold |
594 | static void etp_set_max_parallel (unsigned int nthreads) |
695 | etp_set_max_parallel (unsigned int nthreads) |
595 | { |
696 | { |
596 | if (wanted > nthreads) |
697 | if (wanted > nthreads) |
597 | wanted = nthreads; |
698 | wanted = nthreads; |
598 | |
699 | |
599 | while (started > wanted) |
700 | while (started > wanted) |
600 | etp_end_thread (); |
701 | etp_end_thread (); |
601 | } |
702 | } |
602 | |
703 | |
603 | /*****************************************************************************/ |
704 | /*****************************************************************************/ |
604 | |
705 | |
|
|
706 | static void |
605 | static void grp_try_feed (eio_req *grp) |
707 | grp_try_feed (eio_req *grp) |
606 | { |
708 | { |
607 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
709 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
608 | { |
710 | { |
609 | int old_len = grp->size; |
711 | grp->flags &= ~EIO_FLAG_GROUPADD; |
610 | |
712 | |
611 | EIO_FEED (grp); |
713 | EIO_FEED (grp); |
612 | |
714 | |
613 | /* stop if no progress has been made */ |
715 | /* stop if no progress has been made */ |
614 | if (old_len == grp->size) |
716 | if (!(grp->flags & EIO_FLAG_GROUPADD)) |
615 | { |
717 | { |
616 | grp->feed = 0; |
718 | grp->feed = 0; |
617 | break; |
719 | break; |
618 | } |
720 | } |
619 | } |
721 | } |
620 | } |
722 | } |
621 | |
723 | |
|
|
724 | static int |
622 | static int grp_dec (eio_req *grp) |
725 | grp_dec (eio_req *grp) |
623 | { |
726 | { |
624 | --grp->size; |
727 | --grp->size; |
625 | |
728 | |
626 | /* call feeder, if applicable */ |
729 | /* call feeder, if applicable */ |
627 | grp_try_feed (grp); |
730 | grp_try_feed (grp); |
… | |
… | |
631 | return eio_finish (grp); |
734 | return eio_finish (grp); |
632 | else |
735 | else |
633 | return 0; |
736 | return 0; |
634 | } |
737 | } |
635 | |
738 | |
|
|
739 | static void |
636 | void eio_destroy (eio_req *req) |
740 | eio_destroy (eio_req *req) |
637 | { |
741 | { |
638 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
742 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
639 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
743 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
640 | |
744 | |
641 | EIO_DESTROY (req); |
745 | EIO_DESTROY (req); |
642 | } |
746 | } |
643 | |
747 | |
|
|
748 | static int |
644 | static int eio_finish (eio_req *req) |
749 | eio_finish (eio_req *req) |
645 | { |
750 | { |
646 | int res = EIO_FINISH (req); |
751 | int res = EIO_FINISH (req); |
647 | |
752 | |
648 | if (req->grp) |
753 | if (req->grp) |
649 | { |
754 | { |
… | |
… | |
657 | if (grp->grp_first == req) |
762 | if (grp->grp_first == req) |
658 | grp->grp_first = req->grp_next; |
763 | grp->grp_first = req->grp_next; |
659 | |
764 | |
660 | res2 = grp_dec (grp); |
765 | res2 = grp_dec (grp); |
661 | |
766 | |
662 | if (!res && res2) |
767 | if (!res) |
663 | res = res2; |
768 | res = res2; |
664 | } |
769 | } |
665 | |
770 | |
666 | eio_destroy (req); |
771 | eio_destroy (req); |
667 | |
772 | |
668 | return res; |
773 | return res; |
669 | } |
774 | } |
670 | |
775 | |
|
|
776 | void |
671 | void eio_grp_cancel (eio_req *grp) |
777 | eio_grp_cancel (eio_req *grp) |
672 | { |
778 | { |
673 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
779 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
674 | eio_cancel (grp); |
780 | eio_cancel (grp); |
675 | } |
781 | } |
676 | |
782 | |
|
|
783 | void |
677 | void eio_cancel (eio_req *req) |
784 | eio_cancel (eio_req *req) |
678 | { |
785 | { |
679 | etp_cancel (req); |
786 | etp_cancel (req); |
680 | } |
787 | } |
681 | |
788 | |
|
|
789 | void |
682 | void eio_submit (eio_req *req) |
790 | eio_submit (eio_req *req) |
683 | { |
791 | { |
684 | etp_submit (req); |
792 | etp_submit (req); |
685 | } |
793 | } |
686 | |
794 | |
687 | unsigned int eio_nreqs (void) |
795 | unsigned int |
|
|
796 | eio_nreqs (void) |
688 | { |
797 | { |
689 | return etp_nreqs (); |
798 | return etp_nreqs (); |
690 | } |
799 | } |
691 | |
800 | |
692 | unsigned int eio_nready (void) |
801 | unsigned int |
|
|
802 | eio_nready (void) |
693 | { |
803 | { |
694 | return etp_nready (); |
804 | return etp_nready (); |
695 | } |
805 | } |
696 | |
806 | |
697 | unsigned int eio_npending (void) |
807 | unsigned int |
|
|
808 | eio_npending (void) |
698 | { |
809 | { |
699 | return etp_npending (); |
810 | return etp_npending (); |
700 | } |
811 | } |
701 | |
812 | |
702 | unsigned int eio_nthreads (void) |
813 | unsigned int ecb_cold |
|
|
814 | eio_nthreads (void) |
703 | { |
815 | { |
704 | return etp_nthreads (); |
816 | return etp_nthreads (); |
705 | } |
817 | } |
706 | |
818 | |
|
|
819 | void ecb_cold |
707 | void eio_set_max_poll_time (double nseconds) |
820 | eio_set_max_poll_time (double nseconds) |
708 | { |
821 | { |
709 | etp_set_max_poll_time (nseconds); |
822 | etp_set_max_poll_time (nseconds); |
710 | } |
823 | } |
711 | |
824 | |
|
|
825 | void ecb_cold |
712 | void eio_set_max_poll_reqs (unsigned int maxreqs) |
826 | eio_set_max_poll_reqs (unsigned int maxreqs) |
713 | { |
827 | { |
714 | etp_set_max_poll_reqs (maxreqs); |
828 | etp_set_max_poll_reqs (maxreqs); |
715 | } |
829 | } |
716 | |
830 | |
|
|
831 | void ecb_cold |
717 | void eio_set_max_idle (unsigned int nthreads) |
832 | eio_set_max_idle (unsigned int nthreads) |
718 | { |
833 | { |
719 | etp_set_max_idle (nthreads); |
834 | etp_set_max_idle (nthreads); |
720 | } |
835 | } |
721 | |
836 | |
|
|
837 | void ecb_cold |
|
|
838 | eio_set_idle_timeout (unsigned int seconds) |
|
|
839 | { |
|
|
840 | etp_set_idle_timeout (seconds); |
|
|
841 | } |
|
|
842 | |
|
|
843 | void ecb_cold |
722 | void eio_set_min_parallel (unsigned int nthreads) |
844 | eio_set_min_parallel (unsigned int nthreads) |
723 | { |
845 | { |
724 | etp_set_min_parallel (nthreads); |
846 | etp_set_min_parallel (nthreads); |
725 | } |
847 | } |
726 | |
848 | |
|
|
849 | void ecb_cold |
727 | void eio_set_max_parallel (unsigned int nthreads) |
850 | eio_set_max_parallel (unsigned int nthreads) |
728 | { |
851 | { |
729 | etp_set_max_parallel (nthreads); |
852 | etp_set_max_parallel (nthreads); |
730 | } |
853 | } |
731 | |
854 | |
732 | int eio_poll (void) |
855 | int eio_poll (void) |
… | |
… | |
736 | |
859 | |
737 | /*****************************************************************************/ |
860 | /*****************************************************************************/ |
738 | /* work around various missing functions */ |
861 | /* work around various missing functions */ |
739 | |
862 | |
740 | #if !HAVE_PREADWRITE |
863 | #if !HAVE_PREADWRITE |
|
|
864 | # undef pread |
|
|
865 | # undef pwrite |
741 | # define pread eio__pread |
866 | # define pread eio__pread |
742 | # define pwrite eio__pwrite |
867 | # define pwrite eio__pwrite |
743 | |
868 | |
744 | static ssize_t |
869 | static eio_ssize_t |
745 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
870 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
746 | { |
871 | { |
747 | ssize_t res; |
872 | eio_ssize_t res; |
748 | off_t ooffset; |
873 | off_t ooffset; |
749 | |
874 | |
750 | X_LOCK (preadwritelock); |
875 | X_LOCK (preadwritelock); |
751 | ooffset = lseek (fd, 0, SEEK_CUR); |
876 | ooffset = lseek (fd, 0, SEEK_CUR); |
752 | lseek (fd, offset, SEEK_SET); |
877 | lseek (fd, offset, SEEK_SET); |
… | |
… | |
755 | X_UNLOCK (preadwritelock); |
880 | X_UNLOCK (preadwritelock); |
756 | |
881 | |
757 | return res; |
882 | return res; |
758 | } |
883 | } |
759 | |
884 | |
760 | static ssize_t |
885 | static eio_ssize_t |
761 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
886 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
762 | { |
887 | { |
763 | ssize_t res; |
888 | eio_ssize_t res; |
764 | off_t ooffset; |
889 | off_t ooffset; |
765 | |
890 | |
766 | X_LOCK (preadwritelock); |
891 | X_LOCK (preadwritelock); |
767 | ooffset = lseek (fd, 0, SEEK_CUR); |
892 | ooffset = lseek (fd, 0, SEEK_CUR); |
768 | lseek (fd, offset, SEEK_SET); |
893 | lseek (fd, offset, SEEK_SET); |
769 | res = write (fd, buf, count); |
894 | res = write (fd, buf, count); |
770 | lseek (fd, offset, SEEK_SET); |
895 | lseek (fd, ooffset, SEEK_SET); |
771 | X_UNLOCK (preadwritelock); |
896 | X_UNLOCK (preadwritelock); |
772 | |
897 | |
773 | return res; |
898 | return res; |
774 | } |
899 | } |
775 | #endif |
900 | #endif |
776 | |
901 | |
777 | #ifndef HAVE_FUTIMES |
902 | #ifndef HAVE_UTIMES |
778 | |
903 | |
|
|
904 | # undef utimes |
779 | # define utimes(path,times) eio__utimes (path, times) |
905 | # define utimes(path,times) eio__utimes (path, times) |
780 | # define futimes(fd,times) eio__futimes (fd, times) |
|
|
781 | |
906 | |
782 | static int |
907 | static int |
783 | eio__utimes (const char *filename, const struct timeval times[2]) |
908 | eio__utimes (const char *filename, const struct timeval times[2]) |
784 | { |
909 | { |
785 | if (times) |
910 | if (times) |
… | |
… | |
793 | } |
918 | } |
794 | else |
919 | else |
795 | return utime (filename, 0); |
920 | return utime (filename, 0); |
796 | } |
921 | } |
797 | |
922 | |
|
|
923 | #endif |
|
|
924 | |
|
|
925 | #ifndef HAVE_FUTIMES |
|
|
926 | |
|
|
927 | # undef futimes |
|
|
928 | # define futimes(fd,times) eio__futimes (fd, times) |
|
|
929 | |
|
|
930 | static int |
798 | static int eio__futimes (int fd, const struct timeval tv[2]) |
931 | eio__futimes (int fd, const struct timeval tv[2]) |
799 | { |
932 | { |
800 | errno = ENOSYS; |
933 | errno = ENOSYS; |
801 | return -1; |
934 | return -1; |
802 | } |
935 | } |
803 | |
936 | |
804 | #endif |
937 | #endif |
805 | |
938 | |
806 | #if !HAVE_FDATASYNC |
939 | #if !HAVE_FDATASYNC |
|
|
940 | # undef fdatasync |
807 | # define fdatasync fsync |
941 | # define fdatasync(fd) fsync (fd) |
808 | #endif |
942 | #endif |
|
|
943 | |
|
|
944 | /* sync_file_range always needs emulation */ |
|
|
945 | static int |
|
|
946 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
|
|
947 | { |
|
|
948 | #if HAVE_SYNC_FILE_RANGE |
|
|
949 | int res; |
|
|
950 | |
|
|
951 | if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE |
|
|
952 | || EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE |
|
|
953 | || EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER) |
|
|
954 | { |
|
|
955 | flags = 0 |
|
|
956 | | (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0) |
|
|
957 | | (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0) |
|
|
958 | | (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0); |
|
|
959 | } |
|
|
960 | |
|
|
961 | res = sync_file_range (fd, offset, nbytes, flags); |
|
|
962 | |
|
|
963 | if (!res || errno != ENOSYS) |
|
|
964 | return res; |
|
|
965 | #endif |
|
|
966 | |
|
|
967 | /* even though we could play tricks with the flags, it's better to always |
|
|
968 | * call fdatasync, as that matches the expectation of its users best */ |
|
|
969 | return fdatasync (fd); |
|
|
970 | } |
|
|
971 | |
|
|
972 | static int |
|
|
973 | eio__fallocate (int fd, int mode, off_t offset, size_t len) |
|
|
974 | { |
|
|
975 | #if HAVE_FALLOCATE |
|
|
976 | return fallocate (fd, mode, offset, len); |
|
|
977 | #else |
|
|
978 | errno = ENOSYS; |
|
|
979 | return -1; |
|
|
980 | #endif |
|
|
981 | } |
809 | |
982 | |
810 | #if !HAVE_READAHEAD |
983 | #if !HAVE_READAHEAD |
|
|
984 | # undef readahead |
811 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
985 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
812 | |
986 | |
813 | static ssize_t |
987 | static eio_ssize_t |
814 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
988 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
815 | { |
989 | { |
816 | size_t todo = count; |
990 | size_t todo = count; |
817 | dBUF; |
991 | dBUF; |
818 | |
992 | |
… | |
… | |
830 | } |
1004 | } |
831 | |
1005 | |
832 | #endif |
1006 | #endif |
833 | |
1007 | |
834 | /* sendfile always needs emulation */ |
1008 | /* sendfile always needs emulation */ |
835 | static ssize_t |
1009 | static eio_ssize_t |
836 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
1010 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
837 | { |
1011 | { |
|
|
1012 | eio_ssize_t written = 0; |
838 | ssize_t res; |
1013 | eio_ssize_t res; |
839 | |
1014 | |
840 | if (!count) |
1015 | if (!count) |
841 | return 0; |
1016 | return 0; |
842 | |
1017 | |
|
|
1018 | for (;;) |
|
|
1019 | { |
|
|
1020 | #ifdef __APPLE__ |
|
|
1021 | # undef HAVE_SENDFILE /* broken, as everything on os x */ |
|
|
1022 | #endif |
843 | #if HAVE_SENDFILE |
1023 | #if HAVE_SENDFILE |
844 | # if __linux |
1024 | # if __linux |
|
|
1025 | off_t soffset = offset; |
845 | res = sendfile (ofd, ifd, &offset, count); |
1026 | res = sendfile (ofd, ifd, &soffset, count); |
846 | |
1027 | |
847 | # elif __freebsd |
1028 | # elif __FreeBSD__ |
848 | /* |
1029 | /* |
849 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
1030 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
850 | * wasted on making it similar to other I/O functions. |
1031 | * wasted on making it similar to other I/O functions. |
851 | */ |
1032 | */ |
852 | { |
|
|
853 | off_t sbytes; |
1033 | off_t sbytes; |
854 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
1034 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
855 | |
1035 | |
856 | if (res < 0 && sbytes) |
1036 | #if 0 /* according to the manpage, this is correct, but broken behaviour */ |
857 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
1037 | /* freebsd' sendfile will return 0 on success */ |
|
|
1038 | /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ |
|
|
1039 | /* not on e.g. EIO or EPIPE - sounds broken */ |
|
|
1040 | if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) |
858 | res = sbytes; |
1041 | res = sbytes; |
859 | } |
1042 | #endif |
|
|
1043 | |
|
|
1044 | /* according to source inspection, this is correct, and useful behaviour */ |
|
|
1045 | if (sbytes) |
|
|
1046 | res = sbytes; |
|
|
1047 | |
|
|
1048 | # elif defined (__APPLE__) |
|
|
1049 | off_t sbytes = count; |
|
|
1050 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
|
|
1051 | |
|
|
1052 | /* according to the manpage, sbytes is always valid */ |
|
|
1053 | if (sbytes) |
|
|
1054 | res = sbytes; |
860 | |
1055 | |
861 | # elif __hpux |
1056 | # elif __hpux |
862 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
1057 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
863 | |
1058 | |
864 | # elif __solaris |
1059 | # elif __solaris |
865 | { |
|
|
866 | struct sendfilevec vec; |
1060 | struct sendfilevec vec; |
867 | size_t sbytes; |
1061 | size_t sbytes; |
868 | |
1062 | |
869 | vec.sfv_fd = ifd; |
1063 | vec.sfv_fd = ifd; |
870 | vec.sfv_flag = 0; |
1064 | vec.sfv_flag = 0; |
871 | vec.sfv_off = offset; |
1065 | vec.sfv_off = offset; |
872 | vec.sfv_len = count; |
1066 | vec.sfv_len = count; |
873 | |
1067 | |
874 | res = sendfilev (ofd, &vec, 1, &sbytes); |
1068 | res = sendfilev (ofd, &vec, 1, &sbytes); |
875 | |
1069 | |
876 | if (res < 0 && sbytes) |
1070 | if (res < 0 && sbytes) |
877 | res = sbytes; |
1071 | res = sbytes; |
878 | } |
|
|
879 | |
1072 | |
880 | # endif |
1073 | # endif |
|
|
1074 | |
|
|
1075 | #elif defined (_WIN32) && 0 |
|
|
1076 | /* does not work, just for documentation of what would need to be done */ |
|
|
1077 | /* actually, cannot be done like this, as TransmitFile changes the file offset, */ |
|
|
1078 | /* libeio guarantees that the file offset does not change, and windows */ |
|
|
1079 | /* has no way to get an independent handle to the same file description */ |
|
|
1080 | HANDLE h = TO_SOCKET (ifd); |
|
|
1081 | SetFilePointer (h, offset, 0, FILE_BEGIN); |
|
|
1082 | res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); |
|
|
1083 | |
881 | #else |
1084 | #else |
882 | res = -1; |
1085 | res = -1; |
883 | errno = ENOSYS; |
1086 | errno = ENOSYS; |
884 | #endif |
1087 | #endif |
885 | |
1088 | |
|
|
1089 | /* we assume sendfile can copy at least 128mb in one go */ |
|
|
1090 | if (res <= 128 * 1024 * 1024) |
|
|
1091 | { |
|
|
1092 | if (res > 0) |
|
|
1093 | written += res; |
|
|
1094 | |
|
|
1095 | if (written) |
|
|
1096 | return written; |
|
|
1097 | |
|
|
1098 | break; |
|
|
1099 | } |
|
|
1100 | else |
|
|
1101 | { |
|
|
1102 | /* if we requested more, then probably the kernel was lazy */ |
|
|
1103 | written += res; |
|
|
1104 | offset += res; |
|
|
1105 | count -= res; |
|
|
1106 | |
|
|
1107 | if (!count) |
|
|
1108 | return written; |
|
|
1109 | } |
|
|
1110 | } |
|
|
1111 | |
886 | if (res < 0 |
1112 | if (res < 0 |
887 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
1113 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
1114 | /* BSDs */ |
|
|
1115 | #ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ |
|
|
1116 | || errno == ENOTSUP |
|
|
1117 | #endif |
|
|
1118 | #ifdef EOPNOTSUPP /* windows */ |
|
|
1119 | || errno == EOPNOTSUPP /* BSDs */ |
|
|
1120 | #endif |
888 | #if __solaris |
1121 | #if __solaris |
889 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
1122 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
890 | #endif |
1123 | #endif |
891 | ) |
1124 | ) |
892 | ) |
1125 | ) |
… | |
… | |
896 | |
1129 | |
897 | res = 0; |
1130 | res = 0; |
898 | |
1131 | |
899 | while (count) |
1132 | while (count) |
900 | { |
1133 | { |
901 | ssize_t cnt; |
1134 | eio_ssize_t cnt; |
902 | |
1135 | |
903 | cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); |
1136 | cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); |
904 | |
1137 | |
905 | if (cnt <= 0) |
1138 | if (cnt <= 0) |
906 | { |
1139 | { |
… | |
… | |
923 | } |
1156 | } |
924 | |
1157 | |
925 | return res; |
1158 | return res; |
926 | } |
1159 | } |
927 | |
1160 | |
|
|
1161 | #ifdef PAGESIZE |
|
|
1162 | # define eio_pagesize() PAGESIZE |
|
|
1163 | #else |
|
|
1164 | static intptr_t |
|
|
1165 | eio_pagesize (void) |
|
|
1166 | { |
|
|
1167 | static intptr_t page; |
|
|
1168 | |
|
|
1169 | if (!page) |
|
|
1170 | page = sysconf (_SC_PAGESIZE); |
|
|
1171 | |
|
|
1172 | return page; |
|
|
1173 | } |
|
|
1174 | #endif |
|
|
1175 | |
|
|
1176 | static void |
|
|
1177 | eio_page_align (void **addr, size_t *length) |
|
|
1178 | { |
|
|
1179 | intptr_t mask = eio_pagesize () - 1; |
|
|
1180 | |
|
|
1181 | /* round down addr */ |
|
|
1182 | intptr_t adj = mask & (intptr_t)*addr; |
|
|
1183 | |
|
|
1184 | *addr = (void *)((intptr_t)*addr - adj); |
|
|
1185 | *length += adj; |
|
|
1186 | |
|
|
1187 | /* round up length */ |
|
|
1188 | *length = (*length + mask) & ~mask; |
|
|
1189 | } |
|
|
1190 | |
|
|
1191 | #if !_POSIX_MEMLOCK |
|
|
1192 | # define eio__mlockall(a) EIO_ENOSYS () |
|
|
1193 | #else |
|
|
1194 | |
|
|
1195 | static int |
|
|
1196 | eio__mlockall (int flags) |
|
|
1197 | { |
|
|
1198 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
|
|
1199 | extern int mallopt (int, int); |
|
|
1200 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
|
|
1201 | #endif |
|
|
1202 | |
|
|
1203 | if (EIO_MCL_CURRENT != MCL_CURRENT |
|
|
1204 | || EIO_MCL_FUTURE != MCL_FUTURE) |
|
|
1205 | { |
|
|
1206 | flags = 0 |
|
|
1207 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
|
|
1208 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); |
|
|
1209 | } |
|
|
1210 | |
|
|
1211 | return mlockall (flags); |
|
|
1212 | } |
|
|
1213 | #endif |
|
|
1214 | |
|
|
1215 | #if !_POSIX_MEMLOCK_RANGE |
|
|
1216 | # define eio__mlock(a,b) EIO_ENOSYS () |
|
|
1217 | #else |
|
|
1218 | |
|
|
1219 | static int |
|
|
1220 | eio__mlock (void *addr, size_t length) |
|
|
1221 | { |
|
|
1222 | eio_page_align (&addr, &length); |
|
|
1223 | |
|
|
1224 | return mlock (addr, length); |
|
|
1225 | } |
|
|
1226 | |
|
|
1227 | #endif |
|
|
1228 | |
|
|
1229 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
1230 | # define eio__msync(a,b,c) EIO_ENOSYS () |
|
|
1231 | #else |
|
|
1232 | |
|
|
1233 | static int |
|
|
1234 | eio__msync (void *mem, size_t len, int flags) |
|
|
1235 | { |
|
|
1236 | eio_page_align (&mem, &len); |
|
|
1237 | |
|
|
1238 | if (EIO_MS_ASYNC != MS_SYNC |
|
|
1239 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
|
|
1240 | || EIO_MS_SYNC != MS_SYNC) |
|
|
1241 | { |
|
|
1242 | flags = 0 |
|
|
1243 | | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0) |
|
|
1244 | | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0) |
|
|
1245 | | (flags & EIO_MS_SYNC ? MS_SYNC : 0); |
|
|
1246 | } |
|
|
1247 | |
|
|
1248 | return msync (mem, len, flags); |
|
|
1249 | } |
|
|
1250 | |
|
|
1251 | #endif |
|
|
1252 | |
|
|
1253 | static int |
|
|
1254 | eio__mtouch (eio_req *req) |
|
|
1255 | { |
|
|
1256 | void *mem = req->ptr2; |
|
|
1257 | size_t len = req->size; |
|
|
1258 | int flags = req->int1; |
|
|
1259 | |
|
|
1260 | eio_page_align (&mem, &len); |
|
|
1261 | |
|
|
1262 | { |
|
|
1263 | intptr_t addr = (intptr_t)mem; |
|
|
1264 | intptr_t end = addr + len; |
|
|
1265 | intptr_t page = eio_pagesize (); |
|
|
1266 | |
|
|
1267 | if (addr < end) |
|
|
1268 | if (flags & EIO_MT_MODIFY) /* modify */ |
|
|
1269 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1270 | else |
|
|
1271 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1272 | } |
|
|
1273 | |
|
|
1274 | return 0; |
|
|
1275 | } |
|
|
1276 | |
|
|
1277 | /*****************************************************************************/ |
|
|
1278 | /* requests implemented outside eio_execute, because they are so large */ |
|
|
1279 | |
|
|
1280 | static void |
|
|
1281 | eio__realpath (eio_req *req, etp_worker *self) |
|
|
1282 | { |
|
|
1283 | char *rel = req->ptr1; |
|
|
1284 | char *res; |
|
|
1285 | char *tmp1, *tmp2; |
|
|
1286 | #if SYMLOOP_MAX > 32 |
|
|
1287 | int symlinks = SYMLOOP_MAX; |
|
|
1288 | #else |
|
|
1289 | int symlinks = 32; |
|
|
1290 | #endif |
|
|
1291 | |
|
|
1292 | req->result = -1; |
|
|
1293 | |
|
|
1294 | errno = EINVAL; |
|
|
1295 | if (!rel) |
|
|
1296 | return; |
|
|
1297 | |
|
|
1298 | errno = ENOENT; |
|
|
1299 | if (!*rel) |
|
|
1300 | return; |
|
|
1301 | |
|
|
1302 | if (!req->ptr2) |
|
|
1303 | { |
|
|
1304 | X_LOCK (wrklock); |
|
|
1305 | req->flags |= EIO_FLAG_PTR2_FREE; |
|
|
1306 | X_UNLOCK (wrklock); |
|
|
1307 | req->ptr2 = malloc (PATH_MAX * 3); |
|
|
1308 | |
|
|
1309 | errno = ENOMEM; |
|
|
1310 | if (!req->ptr2) |
|
|
1311 | return; |
|
|
1312 | } |
|
|
1313 | |
|
|
1314 | res = req->ptr2; |
|
|
1315 | tmp1 = res + PATH_MAX; |
|
|
1316 | tmp2 = tmp1 + PATH_MAX; |
|
|
1317 | |
|
|
1318 | #if 0 /* disabled, the musl way to do things is just too racy */ |
|
|
1319 | #if __linux && defined(O_NONBLOCK) && defined(O_NOATIME) |
|
|
1320 | /* on linux we may be able to ask the kernel */ |
|
|
1321 | { |
|
|
1322 | int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME); |
|
|
1323 | |
|
|
1324 | if (fd >= 0) |
|
|
1325 | { |
|
|
1326 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
|
|
1327 | req->result = readlink (tmp1, res, PATH_MAX); |
|
|
1328 | close (fd); |
|
|
1329 | |
|
|
1330 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
|
|
1331 | |
|
|
1332 | if (req->result > 0) |
|
|
1333 | goto done; |
|
|
1334 | } |
|
|
1335 | else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) |
|
|
1336 | return; |
|
|
1337 | } |
|
|
1338 | #endif |
|
|
1339 | #endif |
|
|
1340 | |
|
|
1341 | if (*rel != '/') |
|
|
1342 | { |
|
|
1343 | if (!getcwd (res, PATH_MAX)) |
|
|
1344 | return; |
|
|
1345 | |
|
|
1346 | if (res [1]) /* only use if not / */ |
|
|
1347 | res += strlen (res); |
|
|
1348 | } |
|
|
1349 | |
|
|
1350 | while (*rel) |
|
|
1351 | { |
|
|
1352 | eio_ssize_t len, linklen; |
|
|
1353 | char *beg = rel; |
|
|
1354 | |
|
|
1355 | while (*rel && *rel != '/') |
|
|
1356 | ++rel; |
|
|
1357 | |
|
|
1358 | len = rel - beg; |
|
|
1359 | |
|
|
1360 | if (!len) /* skip slashes */ |
|
|
1361 | { |
|
|
1362 | ++rel; |
|
|
1363 | continue; |
|
|
1364 | } |
|
|
1365 | |
|
|
1366 | if (beg [0] == '.') |
|
|
1367 | { |
|
|
1368 | if (len == 1) |
|
|
1369 | continue; /* . - nop */ |
|
|
1370 | |
|
|
1371 | if (beg [1] == '.' && len == 2) |
|
|
1372 | { |
|
|
1373 | /* .. - back up one component, if possible */ |
|
|
1374 | |
|
|
1375 | while (res != req->ptr2) |
|
|
1376 | if (*--res == '/') |
|
|
1377 | break; |
|
|
1378 | |
|
|
1379 | continue; |
|
|
1380 | } |
|
|
1381 | } |
|
|
1382 | |
|
|
1383 | errno = ENAMETOOLONG; |
|
|
1384 | if (res + 1 + len + 1 >= tmp1) |
|
|
1385 | return; |
|
|
1386 | |
|
|
1387 | /* copy one component */ |
|
|
1388 | *res = '/'; |
|
|
1389 | memcpy (res + 1, beg, len); |
|
|
1390 | |
|
|
1391 | /* zero-terminate, for readlink */ |
|
|
1392 | res [len + 1] = 0; |
|
|
1393 | |
|
|
1394 | /* now check if it's a symlink */ |
|
|
1395 | linklen = readlink (req->ptr2, tmp1, PATH_MAX); |
|
|
1396 | |
|
|
1397 | if (linklen < 0) |
|
|
1398 | { |
|
|
1399 | if (errno != EINVAL) |
|
|
1400 | return; |
|
|
1401 | |
|
|
1402 | /* it's a normal directory. hopefully */ |
|
|
1403 | res += len + 1; |
|
|
1404 | } |
|
|
1405 | else |
|
|
1406 | { |
|
|
1407 | /* yay, it was a symlink - build new path in tmp2 */ |
|
|
1408 | int rellen = strlen (rel); |
|
|
1409 | |
|
|
1410 | errno = ENAMETOOLONG; |
|
|
1411 | if (linklen + 1 + rellen >= PATH_MAX) |
|
|
1412 | return; |
|
|
1413 | |
|
|
1414 | errno = ELOOP; |
|
|
1415 | if (!--symlinks) |
|
|
1416 | return; |
|
|
1417 | |
|
|
1418 | if (*tmp1 == '/') |
|
|
1419 | res = req->ptr2; /* symlink resolves to an absolute path */ |
|
|
1420 | |
|
|
1421 | /* we need to be careful, as rel might point into tmp2 already */ |
|
|
1422 | memmove (tmp2 + linklen + 1, rel, rellen + 1); |
|
|
1423 | tmp2 [linklen] = '/'; |
|
|
1424 | memcpy (tmp2, tmp1, linklen); |
|
|
1425 | |
|
|
1426 | rel = tmp2; |
|
|
1427 | } |
|
|
1428 | } |
|
|
1429 | |
|
|
1430 | /* special case for the lone root path */ |
|
|
1431 | if (res == req->ptr2) |
|
|
1432 | *res++ = '/'; |
|
|
1433 | |
|
|
1434 | req->result = res - (char *)req->ptr2; |
|
|
1435 | |
|
|
1436 | done: |
|
|
1437 | req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */ |
|
|
1438 | } |
|
|
1439 | |
|
|
1440 | static signed char |
|
|
1441 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
|
|
1442 | { |
|
|
1443 | return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ |
|
|
1444 | : a->inode < b->inode ? -1 |
|
|
1445 | : a->inode > b->inode ? 1 |
|
|
1446 | : 0; |
|
|
1447 | } |
|
|
1448 | |
|
|
1449 | #define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 |
|
|
1450 | |
|
|
1451 | #define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
|
|
1452 | #define EIO_SORT_FAST 60 /* when to only use insertion sort */ |
|
|
1453 | |
|
|
1454 | static void |
|
|
1455 | eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits) |
|
|
1456 | { |
|
|
1457 | unsigned char bits [9 + sizeof (eio_ino_t) * 8]; |
|
|
1458 | unsigned char *bit = bits; |
|
|
1459 | |
|
|
1460 | assert (CHAR_BIT == 8); |
|
|
1461 | assert (sizeof (eio_dirent) * 8 < 256); |
|
|
1462 | assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */ |
|
|
1463 | assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */ |
|
|
1464 | |
|
|
1465 | if (size <= EIO_SORT_FAST) |
|
|
1466 | return; |
|
|
1467 | |
|
|
1468 | /* first prepare an array of bits to test in our radix sort */ |
|
|
1469 | /* try to take endianness into account, as well as differences in eio_ino_t sizes */ |
|
|
1470 | /* inode_bits must contain all inodes ORed together */ |
|
|
1471 | /* which is used to skip bits that are 0 everywhere, which is very common */ |
|
|
1472 | { |
|
|
1473 | eio_ino_t endianness; |
|
|
1474 | int i, j; |
|
|
1475 | |
|
|
1476 | /* we store the byte offset of byte n into byte n of "endianness" */ |
|
|
1477 | for (i = 0; i < sizeof (eio_ino_t); ++i) |
|
|
1478 | ((unsigned char *)&endianness)[i] = i; |
|
|
1479 | |
|
|
1480 | *bit++ = 0; |
|
|
1481 | |
|
|
1482 | for (i = 0; i < sizeof (eio_ino_t); ++i) |
|
|
1483 | { |
|
|
1484 | /* shifting off the byte offsets out of "endianness" */ |
|
|
1485 | int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8; |
|
|
1486 | endianness >>= 8; |
|
|
1487 | |
|
|
1488 | for (j = 0; j < 8; ++j) |
|
|
1489 | if (inode_bits & (((eio_ino_t)1) << (i * 8 + j))) |
|
|
1490 | *bit++ = offs + j; |
|
|
1491 | } |
|
|
1492 | |
|
|
1493 | for (j = 0; j < 8; ++j) |
|
|
1494 | if (score_bits & (1 << j)) |
|
|
1495 | *bit++ = offsetof (eio_dirent, score) * 8 + j; |
|
|
1496 | } |
|
|
1497 | |
|
|
1498 | /* now actually do the sorting (a variant of MSD radix sort) */ |
|
|
1499 | { |
|
|
1500 | eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base; |
|
|
1501 | eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end; |
|
|
1502 | unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8]; |
|
|
1503 | int stk_idx = 0; |
|
|
1504 | |
|
|
1505 | base_stk [stk_idx] = dents; |
|
|
1506 | end_stk [stk_idx] = dents + size; |
|
|
1507 | bit_stk [stk_idx] = bit - 1; |
|
|
1508 | |
|
|
1509 | do |
|
|
1510 | { |
|
|
1511 | base = base_stk [stk_idx]; |
|
|
1512 | end = end_stk [stk_idx]; |
|
|
1513 | bit = bit_stk [stk_idx]; |
|
|
1514 | |
|
|
1515 | for (;;) |
|
|
1516 | { |
|
|
1517 | unsigned char O = *bit >> 3; |
|
|
1518 | unsigned char M = 1 << (*bit & 7); |
|
|
1519 | |
|
|
1520 | eio_dirent *a = base; |
|
|
1521 | eio_dirent *b = end; |
|
|
1522 | |
|
|
1523 | if (b - a < EIO_SORT_CUTOFF) |
|
|
1524 | break; |
|
|
1525 | |
|
|
1526 | /* now bit-partition the array on the bit */ |
|
|
1527 | /* this ugly asymmetric loop seems to perform much better than typical */ |
|
|
1528 | /* partition algos found in the literature */ |
|
|
1529 | do |
|
|
1530 | if (!(((unsigned char *)a)[O] & M)) |
|
|
1531 | ++a; |
|
|
1532 | else if (!(((unsigned char *)--b)[O] & M)) |
|
|
1533 | { |
|
|
1534 | eio_dirent tmp = *a; *a = *b; *b = tmp; |
|
|
1535 | ++a; |
|
|
1536 | } |
|
|
1537 | while (b > a); |
|
|
1538 | |
|
|
1539 | /* next bit, or stop, if no bits left in this path */ |
|
|
1540 | if (!*--bit) |
|
|
1541 | break; |
|
|
1542 | |
|
|
1543 | base_stk [stk_idx] = a; |
|
|
1544 | end_stk [stk_idx] = end; |
|
|
1545 | bit_stk [stk_idx] = bit; |
|
|
1546 | ++stk_idx; |
|
|
1547 | |
|
|
1548 | end = a; |
|
|
1549 | } |
|
|
1550 | } |
|
|
1551 | while (stk_idx--); |
|
|
1552 | } |
|
|
1553 | } |
|
|
1554 | |
|
|
1555 | static void |
|
|
1556 | eio_dent_insertion_sort (eio_dirent *dents, int size) |
|
|
1557 | { |
|
|
1558 | /* first move the smallest element to the front, to act as a sentinel */ |
|
|
1559 | { |
|
|
1560 | int i; |
|
|
1561 | eio_dirent *min = dents; |
|
|
1562 | |
|
|
1563 | /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */ |
|
|
1564 | for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; ) |
|
|
1565 | if (EIO_DENT_CMP (dents [i], <, *min)) |
|
|
1566 | min = &dents [i]; |
|
|
1567 | |
|
|
1568 | /* swap elements 0 and j (minimum) */ |
|
|
1569 | { |
|
|
1570 | eio_dirent tmp = *dents; *dents = *min; *min = tmp; |
|
|
1571 | } |
|
|
1572 | } |
|
|
1573 | |
|
|
1574 | /* then do standard insertion sort, assuming that all elements are >= dents [0] */ |
|
|
1575 | { |
|
|
1576 | eio_dirent *i, *j; |
|
|
1577 | |
|
|
1578 | for (i = dents + 1; i < dents + size; ++i) |
|
|
1579 | { |
|
|
1580 | eio_dirent value = *i; |
|
|
1581 | |
|
|
1582 | for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j) |
|
|
1583 | j [1] = j [0]; |
|
|
1584 | |
|
|
1585 | j [1] = value; |
|
|
1586 | } |
|
|
1587 | } |
|
|
1588 | } |
|
|
1589 | |
|
|
1590 | static void |
|
|
1591 | eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits) |
|
|
1592 | { |
|
|
1593 | if (size <= 1) |
|
|
1594 | return; /* our insertion sort relies on size > 0 */ |
|
|
1595 | |
|
|
1596 | /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */ |
|
|
1597 | /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */ |
|
|
1598 | eio_dent_radix_sort (dents, size, score_bits, inode_bits); |
|
|
1599 | |
|
|
1600 | /* use an insertion sort at the end, or for small arrays, */ |
|
|
1601 | /* as insertion sort is more efficient for small partitions */ |
|
|
1602 | eio_dent_insertion_sort (dents, size); |
|
|
1603 | } |
|
|
1604 | |
928 | /* read a full directory */ |
1605 | /* read a full directory */ |
929 | static void |
1606 | static void |
930 | eio__scandir (eio_req *req, etp_worker *self) |
1607 | eio__scandir (eio_req *req, etp_worker *self) |
931 | { |
1608 | { |
|
|
1609 | char *name, *names; |
|
|
1610 | int namesalloc = 4096 - sizeof (void *) * 4; |
|
|
1611 | int namesoffs = 0; |
|
|
1612 | int flags = req->int1; |
|
|
1613 | eio_dirent *dents = 0; |
|
|
1614 | int dentalloc = 128; |
|
|
1615 | int dentoffs = 0; |
|
|
1616 | eio_ino_t inode_bits = 0; |
|
|
1617 | #ifdef _WIN32 |
|
|
1618 | HANDLE dirp; |
|
|
1619 | WIN32_FIND_DATA entp; |
|
|
1620 | #else |
932 | DIR *dirp; |
1621 | DIR *dirp; |
933 | EIO_STRUCT_DIRENT *entp; |
1622 | EIO_STRUCT_DIRENT *entp; |
934 | char *name, *names; |
1623 | #endif |
935 | int memlen = 4096; |
|
|
936 | int memofs = 0; |
|
|
937 | int res = 0; |
|
|
938 | |
1624 | |
939 | X_LOCK (wrklock); |
1625 | req->result = -1; |
940 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
1626 | |
|
|
1627 | if (!(flags & EIO_READDIR_DENTS)) |
|
|
1628 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
|
|
1629 | |
|
|
1630 | #ifdef _WIN32 |
|
|
1631 | { |
|
|
1632 | int len = strlen ((const char *)req->ptr1); |
|
|
1633 | char *path = malloc (MAX_PATH); |
|
|
1634 | const char *fmt; |
|
|
1635 | |
|
|
1636 | if (!len) |
|
|
1637 | fmt = "./*"; |
|
|
1638 | else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\') |
|
|
1639 | fmt = "%s*"; |
|
|
1640 | else |
|
|
1641 | fmt = "%s/*"; |
|
|
1642 | |
|
|
1643 | _snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1); |
|
|
1644 | dirp = FindFirstFile (path, &entp); |
|
|
1645 | free (path); |
|
|
1646 | |
|
|
1647 | if (dirp == INVALID_HANDLE_VALUE) |
|
|
1648 | { |
|
|
1649 | dirp = 0; |
|
|
1650 | |
|
|
1651 | switch (GetLastError ()) |
|
|
1652 | { |
|
|
1653 | case ERROR_FILE_NOT_FOUND: |
|
|
1654 | req->result = 0; |
|
|
1655 | break; |
|
|
1656 | |
|
|
1657 | case ERROR_INVALID_NAME: |
|
|
1658 | case ERROR_PATH_NOT_FOUND: |
|
|
1659 | case ERROR_NO_MORE_FILES: |
|
|
1660 | errno = ENOENT; |
|
|
1661 | break; |
|
|
1662 | |
|
|
1663 | case ERROR_NOT_ENOUGH_MEMORY: |
|
|
1664 | errno = ENOMEM; |
|
|
1665 | break; |
|
|
1666 | |
|
|
1667 | default: |
|
|
1668 | errno = EINVAL; |
|
|
1669 | break; |
|
|
1670 | } |
|
|
1671 | } |
|
|
1672 | } |
|
|
1673 | #else |
941 | self->dirp = dirp = opendir (req->ptr1); |
1674 | dirp = opendir (req->ptr1); |
|
|
1675 | #endif |
|
|
1676 | |
942 | req->flags |= EIO_FLAG_PTR2_FREE; |
1677 | if (req->flags & EIO_FLAG_PTR1_FREE) |
|
|
1678 | free (req->ptr1); |
|
|
1679 | |
|
|
1680 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
|
|
1681 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
943 | req->ptr2 = names = malloc (memlen); |
1682 | req->ptr2 = names = malloc (namesalloc); |
944 | X_UNLOCK (wrklock); |
|
|
945 | |
1683 | |
946 | if (dirp && names) |
1684 | if (dirp && names && (!flags || dents)) |
947 | for (;;) |
1685 | for (;;) |
948 | { |
1686 | { |
|
|
1687 | int done; |
|
|
1688 | |
|
|
1689 | #ifdef _WIN32 |
|
|
1690 | done = !dirp; |
|
|
1691 | #else |
949 | errno = 0; |
1692 | errno = 0; |
950 | entp = readdir (dirp); |
1693 | entp = readdir (dirp); |
|
|
1694 | done = !entp; |
|
|
1695 | #endif |
951 | |
1696 | |
952 | if (!entp) |
1697 | if (done) |
|
|
1698 | { |
|
|
1699 | #ifndef _WIN32 |
|
|
1700 | int old_errno = errno; |
|
|
1701 | closedir (dirp); |
|
|
1702 | errno = old_errno; |
|
|
1703 | |
|
|
1704 | if (errno) |
|
|
1705 | break; |
|
|
1706 | #endif |
|
|
1707 | |
|
|
1708 | /* sort etc. */ |
|
|
1709 | req->int1 = flags; |
|
|
1710 | req->result = dentoffs; |
|
|
1711 | |
|
|
1712 | if (flags & EIO_READDIR_STAT_ORDER) |
|
|
1713 | eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits); |
|
|
1714 | else if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1715 | if (flags & EIO_READDIR_FOUND_UNKNOWN) |
|
|
1716 | eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
|
|
1717 | else |
|
|
1718 | { |
|
|
1719 | /* in this case, all is known, and we just put dirs first and sort them */ |
|
|
1720 | eio_dirent *oth = dents + dentoffs; |
|
|
1721 | eio_dirent *dir = dents; |
|
|
1722 | |
|
|
1723 | /* now partition dirs to the front, and non-dirs to the back */ |
|
|
1724 | /* by walking from both sides and swapping if necessary */ |
|
|
1725 | while (oth > dir) |
|
|
1726 | { |
|
|
1727 | if (dir->type == EIO_DT_DIR) |
|
|
1728 | ++dir; |
|
|
1729 | else if ((--oth)->type == EIO_DT_DIR) |
|
|
1730 | { |
|
|
1731 | eio_dirent tmp = *dir; *dir = *oth; *oth = tmp; |
|
|
1732 | |
|
|
1733 | ++dir; |
|
|
1734 | } |
|
|
1735 | } |
|
|
1736 | |
|
|
1737 | /* now sort the dirs only (dirs all have the same score) */ |
|
|
1738 | eio_dent_sort (dents, dir - dents, 0, inode_bits); |
|
|
1739 | } |
|
|
1740 | |
953 | break; |
1741 | break; |
|
|
1742 | } |
954 | |
1743 | |
955 | name = entp->d_name; |
1744 | /* now add the entry to our list(s) */ |
|
|
1745 | name = D_NAME (entp); |
956 | |
1746 | |
|
|
1747 | /* skip . and .. entries */ |
957 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1748 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
958 | { |
1749 | { |
959 | int len = strlen (name) + 1; |
1750 | int len = D_NAMLEN (entp) + 1; |
960 | |
1751 | |
961 | res++; |
1752 | while (ecb_expect_false (namesoffs + len > namesalloc)) |
962 | |
|
|
963 | while (memofs + len > memlen) |
|
|
964 | { |
1753 | { |
965 | memlen *= 2; |
1754 | namesalloc *= 2; |
966 | X_LOCK (wrklock); |
|
|
967 | req->ptr2 = names = realloc (names, memlen); |
1755 | req->ptr2 = names = realloc (names, namesalloc); |
968 | X_UNLOCK (wrklock); |
|
|
969 | |
1756 | |
970 | if (!names) |
1757 | if (!names) |
971 | break; |
1758 | break; |
972 | } |
1759 | } |
973 | |
1760 | |
974 | memcpy (names + memofs, name, len); |
1761 | memcpy (names + namesoffs, name, len); |
|
|
1762 | |
|
|
1763 | if (dents) |
|
|
1764 | { |
|
|
1765 | struct eio_dirent *ent; |
|
|
1766 | |
|
|
1767 | if (ecb_expect_false (dentoffs == dentalloc)) |
|
|
1768 | { |
|
|
1769 | dentalloc *= 2; |
|
|
1770 | req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
|
|
1771 | |
|
|
1772 | if (!dents) |
|
|
1773 | break; |
|
|
1774 | } |
|
|
1775 | |
|
|
1776 | ent = dents + dentoffs; |
|
|
1777 | |
|
|
1778 | ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */ |
|
|
1779 | ent->namelen = len - 1; |
|
|
1780 | ent->inode = D_INO (entp); |
|
|
1781 | |
|
|
1782 | inode_bits |= ent->inode; |
|
|
1783 | |
|
|
1784 | switch (D_TYPE (entp)) |
|
|
1785 | { |
|
|
1786 | default: |
|
|
1787 | ent->type = EIO_DT_UNKNOWN; |
|
|
1788 | flags |= EIO_READDIR_FOUND_UNKNOWN; |
|
|
1789 | break; |
|
|
1790 | |
|
|
1791 | #ifdef DT_FIFO |
|
|
1792 | case DT_FIFO: ent->type = EIO_DT_FIFO; break; |
|
|
1793 | #endif |
|
|
1794 | #ifdef DT_CHR |
|
|
1795 | case DT_CHR: ent->type = EIO_DT_CHR; break; |
|
|
1796 | #endif |
|
|
1797 | #ifdef DT_MPC |
|
|
1798 | case DT_MPC: ent->type = EIO_DT_MPC; break; |
|
|
1799 | #endif |
|
|
1800 | #ifdef DT_DIR |
|
|
1801 | case DT_DIR: ent->type = EIO_DT_DIR; break; |
|
|
1802 | #endif |
|
|
1803 | #ifdef DT_NAM |
|
|
1804 | case DT_NAM: ent->type = EIO_DT_NAM; break; |
|
|
1805 | #endif |
|
|
1806 | #ifdef DT_BLK |
|
|
1807 | case DT_BLK: ent->type = EIO_DT_BLK; break; |
|
|
1808 | #endif |
|
|
1809 | #ifdef DT_MPB |
|
|
1810 | case DT_MPB: ent->type = EIO_DT_MPB; break; |
|
|
1811 | #endif |
|
|
1812 | #ifdef DT_REG |
|
|
1813 | case DT_REG: ent->type = EIO_DT_REG; break; |
|
|
1814 | #endif |
|
|
1815 | #ifdef DT_NWK |
|
|
1816 | case DT_NWK: ent->type = EIO_DT_NWK; break; |
|
|
1817 | #endif |
|
|
1818 | #ifdef DT_CMP |
|
|
1819 | case DT_CMP: ent->type = EIO_DT_CMP; break; |
|
|
1820 | #endif |
|
|
1821 | #ifdef DT_LNK |
|
|
1822 | case DT_LNK: ent->type = EIO_DT_LNK; break; |
|
|
1823 | #endif |
|
|
1824 | #ifdef DT_SOCK |
|
|
1825 | case DT_SOCK: ent->type = EIO_DT_SOCK; break; |
|
|
1826 | #endif |
|
|
1827 | #ifdef DT_DOOR |
|
|
1828 | case DT_DOOR: ent->type = EIO_DT_DOOR; break; |
|
|
1829 | #endif |
|
|
1830 | #ifdef DT_WHT |
|
|
1831 | case DT_WHT: ent->type = EIO_DT_WHT; break; |
|
|
1832 | #endif |
|
|
1833 | } |
|
|
1834 | |
|
|
1835 | ent->score = 7; |
|
|
1836 | |
|
|
1837 | if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1838 | { |
|
|
1839 | if (ent->type == EIO_DT_UNKNOWN) |
|
|
1840 | { |
|
|
1841 | if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ |
|
|
1842 | ent->score = 1; |
|
|
1843 | else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */ |
|
|
1844 | ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */ |
|
|
1845 | } |
|
|
1846 | else if (ent->type == EIO_DT_DIR) |
|
|
1847 | ent->score = 0; |
|
|
1848 | } |
|
|
1849 | } |
|
|
1850 | |
975 | memofs += len; |
1851 | namesoffs += len; |
|
|
1852 | ++dentoffs; |
976 | } |
1853 | } |
|
|
1854 | |
|
|
1855 | if (EIO_CANCELLED (req)) |
|
|
1856 | { |
|
|
1857 | errno = ECANCELED; |
|
|
1858 | break; |
|
|
1859 | } |
|
|
1860 | |
|
|
1861 | #ifdef _WIN32 |
|
|
1862 | if (!FindNextFile (dirp, &entp)) |
|
|
1863 | { |
|
|
1864 | FindClose (dirp); |
|
|
1865 | dirp = 0; |
|
|
1866 | } |
|
|
1867 | #endif |
977 | } |
1868 | } |
978 | |
|
|
979 | if (errno) |
|
|
980 | res = -1; |
|
|
981 | |
|
|
982 | req->result = res; |
|
|
983 | } |
|
|
984 | |
|
|
985 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
986 | # define msync(a,b,c) ENOSYS |
|
|
987 | #endif |
|
|
988 | |
|
|
989 | int |
|
|
990 | eio__mtouch (void *mem, size_t len, int flags) |
|
|
991 | { |
|
|
992 | intptr_t addr = (intptr_t)mem; |
|
|
993 | intptr_t end = addr + len; |
|
|
994 | #ifdef PAGESIZE |
|
|
995 | const intptr_t page = PAGESIZE; |
|
|
996 | #else |
|
|
997 | static intptr_t page; |
|
|
998 | |
|
|
999 | if (!page) |
|
|
1000 | page = sysconf (_SC_PAGESIZE); |
|
|
1001 | #endif |
|
|
1002 | |
|
|
1003 | addr &= ~(page - 1); /* assume page size is always a power of two */ |
|
|
1004 | |
|
|
1005 | if (addr < end) |
|
|
1006 | if (flags) /* modify */ |
|
|
1007 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); |
|
|
1008 | else |
|
|
1009 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); |
|
|
1010 | |
|
|
1011 | return 0; |
|
|
1012 | } |
1869 | } |
1013 | |
1870 | |
1014 | /*****************************************************************************/ |
1871 | /*****************************************************************************/ |
1015 | |
1872 | |
1016 | #define ALLOC(len) \ |
1873 | #define ALLOC(len) \ |
… | |
… | |
1032 | { |
1889 | { |
1033 | ETP_REQ *req; |
1890 | ETP_REQ *req; |
1034 | struct timespec ts; |
1891 | struct timespec ts; |
1035 | etp_worker *self = (etp_worker *)thr_arg; |
1892 | etp_worker *self = (etp_worker *)thr_arg; |
1036 | |
1893 | |
1037 | /* try to distribute timeouts somewhat randomly */ |
1894 | /* try to distribute timeouts somewhat evenly */ |
1038 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
1895 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
1039 | |
1896 | |
1040 | for (;;) |
1897 | for (;;) |
1041 | { |
1898 | { |
|
|
1899 | ts.tv_sec = 0; |
|
|
1900 | |
1042 | X_LOCK (reqlock); |
1901 | X_LOCK (reqlock); |
1043 | |
1902 | |
1044 | for (;;) |
1903 | for (;;) |
1045 | { |
1904 | { |
1046 | self->req = req = reqq_shift (&req_queue); |
1905 | self->req = req = reqq_shift (&req_queue); |
1047 | |
1906 | |
1048 | if (req) |
1907 | if (req) |
1049 | break; |
1908 | break; |
1050 | |
1909 | |
|
|
1910 | if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */ |
|
|
1911 | { |
|
|
1912 | X_UNLOCK (reqlock); |
|
|
1913 | X_LOCK (wrklock); |
|
|
1914 | --started; |
|
|
1915 | X_UNLOCK (wrklock); |
|
|
1916 | goto quit; |
|
|
1917 | } |
|
|
1918 | |
1051 | ++idle; |
1919 | ++idle; |
1052 | |
1920 | |
1053 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
1921 | if (idle <= max_idle) |
1054 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1922 | /* we are allowed to idle, so do so without any timeout */ |
|
|
1923 | X_COND_WAIT (reqwait, reqlock); |
|
|
1924 | else |
1055 | { |
1925 | { |
1056 | if (idle > max_idle) |
1926 | /* initialise timeout once */ |
1057 | { |
1927 | if (!ts.tv_sec) |
1058 | --idle; |
1928 | ts.tv_sec = time (0) + idle_timeout; |
1059 | X_UNLOCK (reqlock); |
|
|
1060 | X_LOCK (wrklock); |
|
|
1061 | --started; |
|
|
1062 | X_UNLOCK (wrklock); |
|
|
1063 | goto quit; |
|
|
1064 | } |
|
|
1065 | |
1929 | |
1066 | /* we are allowed to idle, so do so without any timeout */ |
|
|
1067 | X_COND_WAIT (reqwait, reqlock); |
1930 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
|
|
1931 | ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */ |
1068 | } |
1932 | } |
1069 | |
1933 | |
1070 | --idle; |
1934 | --idle; |
1071 | } |
1935 | } |
1072 | |
1936 | |
… | |
… | |
1075 | X_UNLOCK (reqlock); |
1939 | X_UNLOCK (reqlock); |
1076 | |
1940 | |
1077 | if (req->type < 0) |
1941 | if (req->type < 0) |
1078 | goto quit; |
1942 | goto quit; |
1079 | |
1943 | |
1080 | if (!EIO_CANCELLED (req)) |
|
|
1081 | ETP_EXECUTE (self, req); |
1944 | ETP_EXECUTE (self, req); |
1082 | |
1945 | |
1083 | X_LOCK (reslock); |
1946 | X_LOCK (reslock); |
1084 | |
1947 | |
1085 | ++npending; |
1948 | ++npending; |
1086 | |
1949 | |
… | |
… | |
1101 | return 0; |
1964 | return 0; |
1102 | } |
1965 | } |
1103 | |
1966 | |
1104 | /*****************************************************************************/ |
1967 | /*****************************************************************************/ |
1105 | |
1968 | |
|
|
1969 | int ecb_cold |
1106 | int eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1970 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1107 | { |
1971 | { |
|
|
1972 | #if !HAVE_PREADWRITE |
|
|
1973 | X_MUTEX_CREATE (preadwritelock); |
|
|
1974 | #endif |
|
|
1975 | |
1108 | return etp_init (want_poll, done_poll); |
1976 | return etp_init (want_poll, done_poll); |
1109 | } |
1977 | } |
1110 | |
1978 | |
|
|
1979 | ecb_inline void |
1111 | static void eio_api_destroy (eio_req *req) |
1980 | eio_api_destroy (eio_req *req) |
1112 | { |
1981 | { |
1113 | free (req); |
1982 | free (req); |
1114 | } |
1983 | } |
1115 | |
1984 | |
1116 | #define REQ(rtype) \ |
1985 | #define REQ(rtype) \ |
… | |
… | |
1135 | { \ |
2004 | { \ |
1136 | eio_api_destroy (req); \ |
2005 | eio_api_destroy (req); \ |
1137 | return 0; \ |
2006 | return 0; \ |
1138 | } |
2007 | } |
1139 | |
2008 | |
|
|
2009 | static void |
1140 | static void eio_execute (etp_worker *self, eio_req *req) |
2010 | eio_execute (etp_worker *self, eio_req *req) |
1141 | { |
2011 | { |
1142 | errno = 0; |
2012 | if (ecb_expect_false (EIO_CANCELLED (req))) |
|
|
2013 | { |
|
|
2014 | req->result = -1; |
|
|
2015 | req->errorno = ECANCELED; |
|
|
2016 | return; |
|
|
2017 | } |
1143 | |
2018 | |
1144 | switch (req->type) |
2019 | switch (req->type) |
1145 | { |
2020 | { |
1146 | case EIO_READ: ALLOC (req->size); |
2021 | case EIO_READ: ALLOC (req->size); |
1147 | req->result = req->offs >= 0 |
2022 | req->result = req->offs >= 0 |
… | |
… | |
1159 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
2034 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1160 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
2035 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1161 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
2036 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1162 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
2037 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1163 | |
2038 | |
|
|
2039 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
2040 | req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
2041 | case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
2042 | req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
2043 | |
1164 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
2044 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
1165 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
2045 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
1166 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
2046 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
1167 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
2047 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
1168 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
2048 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
… | |
… | |
1175 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
2055 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1176 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
2056 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1177 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
2057 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1178 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
2058 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1179 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
2059 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1180 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; |
2060 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1181 | |
2061 | |
|
|
2062 | case EIO_REALPATH: eio__realpath (req, self); break; |
|
|
2063 | |
1182 | case EIO_READLINK: ALLOC (NAME_MAX); |
2064 | case EIO_READLINK: ALLOC (PATH_MAX); |
1183 | req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
2065 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
1184 | |
2066 | |
1185 | case EIO_SYNC: req->result = 0; sync (); break; |
2067 | case EIO_SYNC: req->result = 0; sync (); break; |
1186 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
2068 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1187 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
2069 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1188 | case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break; |
2070 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
|
|
2071 | case EIO_MTOUCH: req->result = eio__mtouch (req); break; |
1189 | case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; |
2072 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
|
|
2073 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
|
|
2074 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
|
|
2075 | case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break; |
1190 | |
2076 | |
1191 | case EIO_READDIR: eio__scandir (req, self); break; |
2077 | case EIO_READDIR: eio__scandir (req, self); break; |
1192 | |
2078 | |
1193 | case EIO_BUSY: |
2079 | case EIO_BUSY: |
1194 | #ifdef _WIN32 |
2080 | #ifdef _WIN32 |
1195 | Sleep (req->nv1 * 1000.); |
2081 | Sleep (req->nv1 * 1e3); |
1196 | #else |
2082 | #else |
1197 | { |
2083 | { |
1198 | struct timeval tv; |
2084 | struct timeval tv; |
1199 | |
2085 | |
1200 | tv.tv_sec = req->nv1; |
2086 | tv.tv_sec = req->nv1; |
1201 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; |
2087 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6; |
1202 | |
2088 | |
1203 | req->result = select (0, 0, 0, 0, &tv); |
2089 | req->result = select (0, 0, 0, 0, &tv); |
1204 | } |
2090 | } |
1205 | #endif |
2091 | #endif |
1206 | break; |
2092 | break; |
… | |
… | |
1221 | times = tv; |
2107 | times = tv; |
1222 | } |
2108 | } |
1223 | else |
2109 | else |
1224 | times = 0; |
2110 | times = 0; |
1225 | |
2111 | |
1226 | |
|
|
1227 | req->result = req->type == EIO_FUTIME |
2112 | req->result = req->type == EIO_FUTIME |
1228 | ? futimes (req->int1, times) |
2113 | ? futimes (req->int1, times) |
1229 | : utimes (req->ptr1, times); |
2114 | : utimes (req->ptr1, times); |
1230 | } |
2115 | } |
1231 | break; |
2116 | break; |
… | |
… | |
1236 | case EIO_NOP: |
2121 | case EIO_NOP: |
1237 | req->result = 0; |
2122 | req->result = 0; |
1238 | break; |
2123 | break; |
1239 | |
2124 | |
1240 | case EIO_CUSTOM: |
2125 | case EIO_CUSTOM: |
1241 | ((void (*)(eio_req *))req->feed) (req); |
2126 | req->feed (req); |
1242 | break; |
2127 | break; |
1243 | |
2128 | |
1244 | default: |
2129 | default: |
|
|
2130 | errno = ENOSYS; |
1245 | req->result = -1; |
2131 | req->result = -1; |
1246 | break; |
2132 | break; |
1247 | } |
2133 | } |
1248 | |
2134 | |
1249 | req->errorno = errno; |
2135 | req->errorno = errno; |
… | |
… | |
1279 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
2165 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1280 | { |
2166 | { |
1281 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
2167 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1282 | } |
2168 | } |
1283 | |
2169 | |
|
|
2170 | eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data) |
|
|
2171 | { |
|
|
2172 | REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND; |
|
|
2173 | } |
|
|
2174 | |
|
|
2175 | eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data) |
|
|
2176 | { |
|
|
2177 | REQ (EIO_MLOCKALL); req->int1 = flags; SEND; |
|
|
2178 | } |
|
|
2179 | |
|
|
2180 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
|
|
2181 | { |
|
|
2182 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
|
|
2183 | } |
|
|
2184 | |
|
|
2185 | eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data) |
|
|
2186 | { |
|
|
2187 | REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND; |
|
|
2188 | } |
|
|
2189 | |
1284 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
2190 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
1285 | { |
2191 | { |
1286 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
2192 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
1287 | } |
2193 | } |
1288 | |
2194 | |
… | |
… | |
1309 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
2215 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
1310 | { |
2216 | { |
1311 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
2217 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
1312 | } |
2218 | } |
1313 | |
2219 | |
|
|
2220 | eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data) |
|
|
2221 | { |
|
|
2222 | REQ (EIO_FSTATVFS); req->int1 = fd; SEND; |
|
|
2223 | } |
|
|
2224 | |
1314 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
2225 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
1315 | { |
2226 | { |
1316 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
2227 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
1317 | } |
2228 | } |
1318 | |
2229 | |
… | |
… | |
1324 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) |
2235 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) |
1325 | { |
2236 | { |
1326 | REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
2237 | REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
1327 | } |
2238 | } |
1328 | |
2239 | |
1329 | eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
2240 | eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data) |
1330 | { |
2241 | { |
1331 | REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
2242 | REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1332 | } |
2243 | } |
1333 | |
2244 | |
1334 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) |
2245 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) |
… | |
… | |
1354 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) |
2265 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) |
1355 | { |
2266 | { |
1356 | REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; |
2267 | REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; |
1357 | } |
2268 | } |
1358 | |
2269 | |
1359 | eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
2270 | eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data) |
1360 | { |
2271 | { |
1361 | REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
2272 | REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1362 | } |
2273 | } |
1363 | |
2274 | |
1364 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
2275 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
… | |
… | |
1380 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
2291 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
1381 | { |
2292 | { |
1382 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
2293 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
1383 | } |
2294 | } |
1384 | |
2295 | |
|
|
2296 | eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data) |
|
|
2297 | { |
|
|
2298 | return eio__1path (EIO_REALPATH, path, pri, cb, data); |
|
|
2299 | } |
|
|
2300 | |
1385 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
2301 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
1386 | { |
2302 | { |
1387 | return eio__1path (EIO_STAT, path, pri, cb, data); |
2303 | return eio__1path (EIO_STAT, path, pri, cb, data); |
1388 | } |
2304 | } |
1389 | |
2305 | |
1390 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
2306 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
1391 | { |
2307 | { |
1392 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
2308 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
1393 | } |
2309 | } |
1394 | |
2310 | |
|
|
2311 | eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data) |
|
|
2312 | { |
|
|
2313 | return eio__1path (EIO_STATVFS, path, pri, cb, data); |
|
|
2314 | } |
|
|
2315 | |
1395 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
2316 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
1396 | { |
2317 | { |
1397 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
2318 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
1398 | } |
2319 | } |
1399 | |
2320 | |
1400 | eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) |
2321 | eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) |
1401 | { |
2322 | { |
1402 | return eio__1path (EIO_RMDIR, path, pri, cb, data); |
2323 | return eio__1path (EIO_RMDIR, path, pri, cb, data); |
1403 | } |
2324 | } |
1404 | |
2325 | |
1405 | eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data) |
2326 | eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data) |
1406 | { |
2327 | { |
1407 | return eio__1path (EIO_READDIR, path, pri, cb, data); |
2328 | REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
1408 | } |
2329 | } |
1409 | |
2330 | |
1410 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
2331 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1411 | { |
2332 | { |
1412 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; |
2333 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND; |
1413 | } |
2334 | } |
1414 | |
2335 | |
1415 | static eio_req * |
2336 | static eio_req * |
1416 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2337 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1417 | { |
2338 | { |
… | |
… | |
1441 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2362 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1442 | { |
2363 | { |
1443 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2364 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
1444 | } |
2365 | } |
1445 | |
2366 | |
1446 | eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) |
2367 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data) |
1447 | { |
2368 | { |
1448 | REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND; |
2369 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
1449 | } |
2370 | } |
1450 | |
2371 | |
1451 | #endif |
2372 | #endif |
1452 | |
2373 | |
1453 | eio_req *eio_grp (eio_cb cb, void *data) |
2374 | eio_req *eio_grp (eio_cb cb, void *data) |
… | |
… | |
1462 | #undef SEND |
2383 | #undef SEND |
1463 | |
2384 | |
1464 | /*****************************************************************************/ |
2385 | /*****************************************************************************/ |
1465 | /* grp functions */ |
2386 | /* grp functions */ |
1466 | |
2387 | |
|
|
2388 | void |
1467 | void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
2389 | eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
1468 | { |
2390 | { |
1469 | grp->int2 = limit; |
2391 | grp->int2 = limit; |
1470 | grp->feed = feed; |
2392 | grp->feed = feed; |
1471 | |
2393 | |
1472 | grp_try_feed (grp); |
2394 | grp_try_feed (grp); |
1473 | } |
2395 | } |
1474 | |
2396 | |
|
|
2397 | void |
1475 | void eio_grp_limit (eio_req *grp, int limit) |
2398 | eio_grp_limit (eio_req *grp, int limit) |
1476 | { |
2399 | { |
1477 | grp->int2 = limit; |
2400 | grp->int2 = limit; |
1478 | |
2401 | |
1479 | grp_try_feed (grp); |
2402 | grp_try_feed (grp); |
1480 | } |
2403 | } |
1481 | |
2404 | |
|
|
2405 | void |
1482 | void eio_grp_add (eio_req *grp, eio_req *req) |
2406 | eio_grp_add (eio_req *grp, eio_req *req) |
1483 | { |
2407 | { |
1484 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
2408 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
|
|
2409 | |
|
|
2410 | grp->flags |= EIO_FLAG_GROUPADD; |
1485 | |
2411 | |
1486 | ++grp->size; |
2412 | ++grp->size; |
1487 | req->grp = grp; |
2413 | req->grp = grp; |
1488 | |
2414 | |
1489 | req->grp_prev = 0; |
2415 | req->grp_prev = 0; |
… | |
… | |
1496 | } |
2422 | } |
1497 | |
2423 | |
1498 | /*****************************************************************************/ |
2424 | /*****************************************************************************/ |
1499 | /* misc garbage */ |
2425 | /* misc garbage */ |
1500 | |
2426 | |
|
|
2427 | eio_ssize_t |
1501 | ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
2428 | eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
1502 | { |
2429 | { |
1503 | etp_worker wrk; |
2430 | etp_worker wrk; |
|
|
2431 | eio_ssize_t ret; |
1504 | |
2432 | |
1505 | wrk.dbuf = 0; |
2433 | wrk.dbuf = 0; |
1506 | |
2434 | |
1507 | eio__sendfile (ofd, ifd, offset, count, &wrk); |
2435 | ret = eio__sendfile (ofd, ifd, offset, count, &wrk); |
1508 | |
2436 | |
1509 | if (wrk.dbuf) |
2437 | if (wrk.dbuf) |
1510 | free (wrk.dbuf); |
2438 | free (wrk.dbuf); |
1511 | } |
|
|
1512 | |
2439 | |
|
|
2440 | return ret; |
|
|
2441 | } |
|
|
2442 | |