1 | /* |
1 | /* |
2 | * libeio implementation |
2 | * libeio implementation |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009 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" |
41 | |
46 | |
42 | #ifdef EIO_STACKSIZE |
47 | #ifdef EIO_STACKSIZE |
43 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
48 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
44 | #endif |
49 | #endif |
45 | #include "xthread.h" |
50 | #include "xthread.h" |
… | |
… | |
53 | #include <sys/stat.h> |
58 | #include <sys/stat.h> |
54 | #include <limits.h> |
59 | #include <limits.h> |
55 | #include <fcntl.h> |
60 | #include <fcntl.h> |
56 | #include <assert.h> |
61 | #include <assert.h> |
57 | |
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 | |
58 | #ifndef EIO_FINISH |
78 | #ifndef EIO_FINISH |
59 | # 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 |
60 | #endif |
80 | #endif |
61 | |
81 | |
62 | #ifndef EIO_DESTROY |
82 | #ifndef EIO_DESTROY |
… | |
… | |
65 | |
85 | |
66 | #ifndef EIO_FEED |
86 | #ifndef EIO_FEED |
67 | # 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) |
68 | #endif |
88 | #endif |
69 | |
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 | |
70 | #ifdef _WIN32 |
101 | #ifdef _WIN32 |
71 | |
102 | |
72 | /*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) |
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158 | |
73 | #else |
159 | #else |
74 | |
160 | |
75 | # include "config.h" |
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76 | # include <sys/time.h> |
161 | #include <sys/time.h> |
77 | # include <sys/select.h> |
162 | #include <sys/select.h> |
78 | # include <sys/mman.h> |
163 | #include <sys/statvfs.h> |
79 | # include <unistd.h> |
164 | #include <unistd.h> |
80 | # include <utime.h> |
165 | #include <utime.h> |
81 | # include <signal.h> |
166 | #include <signal.h> |
82 | # include <dirent.h> |
167 | #include <dirent.h> |
83 | |
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 | |
84 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
175 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
85 | # if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) |
176 | #if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
86 | # define _DIRENT_HAVE_D_TYPE /* sigh */ |
177 | #define _DIRENT_HAVE_D_TYPE /* sigh */ |
87 | # define D_INO(de) (de)->d_fileno |
178 | #define D_INO(de) (de)->d_fileno |
88 | # define D_NAMLEN(de) (de)->d_namlen |
179 | #define D_NAMLEN(de) (de)->d_namlen |
89 | # elif defined(__linux) || defined(d_ino) || _XOPEN_SOURCE >= 600 |
180 | #elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 |
90 | # define D_INO(de) (de)->d_ino |
181 | #define D_INO(de) (de)->d_ino |
91 | # endif |
182 | #endif |
92 | |
183 | |
93 | #ifdef _D_EXACT_NAMLEN |
184 | #ifdef _D_EXACT_NAMLEN |
94 | # undef D_NAMLEN |
185 | #undef D_NAMLEN |
95 | # define D_NAMLEN(de) _D_EXACT_NAMLEN (de) |
186 | #define D_NAMLEN(de) _D_EXACT_NAMLEN (de) |
96 | #endif |
187 | #endif |
97 | |
188 | |
98 | # ifdef _DIRENT_HAVE_D_TYPE |
189 | #ifdef _DIRENT_HAVE_D_TYPE |
99 | # define D_TYPE(de) (de)->d_type |
190 | #define D_TYPE(de) (de)->d_type |
100 | # endif |
191 | #endif |
101 | |
192 | |
102 | # ifndef EIO_STRUCT_DIRENT |
193 | #ifndef EIO_STRUCT_DIRENT |
103 | # define EIO_STRUCT_DIRENT struct dirent |
194 | #define EIO_STRUCT_DIRENT struct dirent |
104 | # endif |
195 | #endif |
105 | |
196 | |
106 | #endif |
197 | #endif |
107 | |
198 | |
108 | #if HAVE_SENDFILE |
199 | #if HAVE_SENDFILE |
109 | # if __linux |
200 | # if __linux |
110 | # include <sys/sendfile.h> |
201 | # include <sys/sendfile.h> |
111 | # elif __freebsd |
202 | # elif __FreeBSD__ || defined __APPLE__ |
112 | # include <sys/socket.h> |
203 | # include <sys/socket.h> |
113 | # include <sys/uio.h> |
204 | # include <sys/uio.h> |
114 | # elif __hpux |
205 | # elif __hpux |
115 | # include <sys/socket.h> |
206 | # include <sys/socket.h> |
116 | # elif __solaris /* not yet */ |
207 | # elif __solaris |
117 | # include <sys/sendfile.h> |
208 | # include <sys/sendfile.h> |
118 | # else |
209 | # else |
119 | # error sendfile support requested but not available |
210 | # error sendfile support requested but not available |
120 | # endif |
211 | # endif |
121 | #endif |
212 | #endif |
… | |
… | |
125 | #endif |
216 | #endif |
126 | #ifndef D_INO |
217 | #ifndef D_INO |
127 | # define D_INO(de) 0 |
218 | # define D_INO(de) 0 |
128 | #endif |
219 | #endif |
129 | #ifndef D_NAMLEN |
220 | #ifndef D_NAMLEN |
130 | # define D_NAMLEN(de) strlen ((de)->d_name) |
221 | # define D_NAMLEN(entp) strlen (D_NAME (entp)) |
131 | #endif |
222 | #endif |
132 | |
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133 | /* number of seconds after which an idle threads exit */ |
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134 | #define IDLE_TIMEOUT 10 |
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135 | |
223 | |
136 | /* used for struct dirent, AIX doesn't provide it */ |
224 | /* used for struct dirent, AIX doesn't provide it */ |
137 | #ifndef NAME_MAX |
225 | #ifndef NAME_MAX |
138 | # 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 |
139 | #endif |
232 | #endif |
140 | |
233 | |
141 | /* buffer size for various temporary buffers */ |
234 | /* buffer size for various temporary buffers */ |
142 | #define EIO_BUFSIZE 65536 |
235 | #define EIO_BUFSIZE 65536 |
143 | |
236 | |
… | |
… | |
150 | if (!eio_buf) \ |
243 | if (!eio_buf) \ |
151 | return -1; |
244 | return -1; |
152 | |
245 | |
153 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
246 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
154 | |
247 | |
155 | /*****************************************************************************/ |
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156 | |
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157 | #if __GNUC__ >= 3 |
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158 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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159 | #else |
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160 | # define expect(expr,value) (expr) |
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161 | #endif |
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162 | |
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163 | #define expect_false(expr) expect ((expr) != 0, 0) |
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164 | #define expect_true(expr) expect ((expr) != 0, 1) |
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165 | |
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166 | /*****************************************************************************/ |
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167 | |
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168 | #define ETP_PRI_MIN EIO_PRI_MIN |
248 | #define ETP_PRI_MIN EIO_PRI_MIN |
169 | #define ETP_PRI_MAX EIO_PRI_MAX |
249 | #define ETP_PRI_MAX EIO_PRI_MAX |
170 | |
250 | |
171 | struct etp_worker; |
251 | struct etp_worker; |
172 | |
252 | |
… | |
… | |
180 | #define ETP_WORKER_CLEAR(req) \ |
260 | #define ETP_WORKER_CLEAR(req) \ |
181 | if (wrk->dbuf) \ |
261 | if (wrk->dbuf) \ |
182 | { \ |
262 | { \ |
183 | free (wrk->dbuf); \ |
263 | free (wrk->dbuf); \ |
184 | wrk->dbuf = 0; \ |
264 | wrk->dbuf = 0; \ |
185 | } \ |
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186 | \ |
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187 | if (wrk->dirp) \ |
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188 | { \ |
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189 | closedir (wrk->dirp); \ |
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190 | wrk->dirp = 0; \ |
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191 | } |
265 | } |
192 | |
266 | |
193 | #define ETP_WORKER_COMMON \ |
267 | #define ETP_WORKER_COMMON \ |
194 | void *dbuf; \ |
268 | void *dbuf; |
195 | DIR *dirp; |
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196 | |
269 | |
197 | /*****************************************************************************/ |
270 | /*****************************************************************************/ |
198 | |
271 | |
199 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
272 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
200 | |
273 | |
201 | /* 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 |
202 | static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
276 | tvdiff (struct timeval *tv1, struct timeval *tv2) |
203 | { |
277 | { |
204 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
278 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
205 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
279 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
206 | } |
280 | } |
207 | |
281 | |
… | |
… | |
214 | static unsigned int max_poll_reqs; /* reslock */ |
288 | static unsigned int max_poll_reqs; /* reslock */ |
215 | |
289 | |
216 | static volatile unsigned int nreqs; /* reqlock */ |
290 | static volatile unsigned int nreqs; /* reqlock */ |
217 | static volatile unsigned int nready; /* reqlock */ |
291 | static volatile unsigned int nready; /* reqlock */ |
218 | static volatile unsigned int npending; /* reqlock */ |
292 | static volatile unsigned int npending; /* reqlock */ |
219 | 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 */ |
220 | |
295 | |
221 | static mutex_t wrklock = X_MUTEX_INIT; |
296 | static xmutex_t wrklock; |
222 | static mutex_t reslock = X_MUTEX_INIT; |
297 | static xmutex_t reslock; |
223 | static mutex_t reqlock = X_MUTEX_INIT; |
298 | static xmutex_t reqlock; |
224 | static cond_t reqwait = X_COND_INIT; |
299 | static xcond_t reqwait; |
225 | |
300 | |
226 | #if !HAVE_PREADWRITE |
301 | #if !HAVE_PREADWRITE |
227 | /* |
302 | /* |
228 | * make our pread/pwrite emulation safe against themselves, but not against |
303 | * make our pread/pwrite emulation safe against themselves, but not against |
229 | * 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, |
230 | * but that's your problem, not mine. |
305 | * but that's your problem, not mine. |
231 | */ |
306 | */ |
232 | static mutex_t preadwritelock = X_MUTEX_INIT; |
307 | static xmutex_t preadwritelock = X_MUTEX_INIT; |
233 | #endif |
308 | #endif |
234 | |
309 | |
235 | typedef struct etp_worker |
310 | typedef struct etp_worker |
236 | { |
311 | { |
237 | /* locked by wrklock */ |
312 | /* locked by wrklock */ |
238 | struct etp_worker *prev, *next; |
313 | struct etp_worker *prev, *next; |
239 | |
314 | |
240 | thread_t tid; |
315 | xthread_t tid; |
241 | |
316 | |
242 | /* locked by reslock, reqlock or wrklock */ |
317 | /* locked by reslock, reqlock or wrklock */ |
243 | ETP_REQ *req; /* currently processed request */ |
318 | ETP_REQ *req; /* currently processed request */ |
244 | |
319 | |
245 | ETP_WORKER_COMMON |
320 | ETP_WORKER_COMMON |
… | |
… | |
250 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
325 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
251 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
326 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
252 | |
327 | |
253 | /* worker threads management */ |
328 | /* worker threads management */ |
254 | |
329 | |
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330 | static void ecb_cold |
255 | static void etp_worker_clear (etp_worker *wrk) |
331 | etp_worker_clear (etp_worker *wrk) |
256 | { |
332 | { |
257 | ETP_WORKER_CLEAR (wrk); |
333 | ETP_WORKER_CLEAR (wrk); |
258 | } |
334 | } |
259 | |
335 | |
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336 | static void ecb_cold |
260 | static void etp_worker_free (etp_worker *wrk) |
337 | etp_worker_free (etp_worker *wrk) |
261 | { |
338 | { |
262 | wrk->next->prev = wrk->prev; |
339 | wrk->next->prev = wrk->prev; |
263 | wrk->prev->next = wrk->next; |
340 | wrk->prev->next = wrk->next; |
264 | |
341 | |
265 | free (wrk); |
342 | free (wrk); |
266 | } |
343 | } |
267 | |
344 | |
268 | static unsigned int etp_nreqs (void) |
345 | static unsigned int |
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346 | etp_nreqs (void) |
269 | { |
347 | { |
270 | int retval; |
348 | int retval; |
271 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
349 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
272 | retval = nreqs; |
350 | retval = nreqs; |
273 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
351 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
274 | return retval; |
352 | return retval; |
275 | } |
353 | } |
276 | |
354 | |
277 | static unsigned int etp_nready (void) |
355 | static unsigned int |
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356 | etp_nready (void) |
278 | { |
357 | { |
279 | unsigned int retval; |
358 | unsigned int retval; |
280 | |
359 | |
281 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
360 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
282 | retval = nready; |
361 | retval = nready; |
283 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
362 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
284 | |
363 | |
285 | return retval; |
364 | return retval; |
286 | } |
365 | } |
287 | |
366 | |
288 | static unsigned int etp_npending (void) |
367 | static unsigned int |
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368 | etp_npending (void) |
289 | { |
369 | { |
290 | unsigned int retval; |
370 | unsigned int retval; |
291 | |
371 | |
292 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
372 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
293 | retval = npending; |
373 | retval = npending; |
294 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
374 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
295 | |
375 | |
296 | return retval; |
376 | return retval; |
297 | } |
377 | } |
298 | |
378 | |
299 | static unsigned int etp_nthreads (void) |
379 | static unsigned int |
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380 | etp_nthreads (void) |
300 | { |
381 | { |
301 | unsigned int retval; |
382 | unsigned int retval; |
302 | |
383 | |
303 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
384 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
304 | retval = started; |
385 | retval = started; |
… | |
… | |
318 | } etp_reqq; |
399 | } etp_reqq; |
319 | |
400 | |
320 | static etp_reqq req_queue; |
401 | static etp_reqq req_queue; |
321 | static etp_reqq res_queue; |
402 | static etp_reqq res_queue; |
322 | |
403 | |
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404 | static void ecb_noinline ecb_cold |
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405 | reqq_init (etp_reqq *q) |
|
|
406 | { |
|
|
407 | int pri; |
|
|
408 | |
|
|
409 | for (pri = 0; pri < ETP_NUM_PRI; ++pri) |
|
|
410 | q->qs[pri] = q->qe[pri] = 0; |
|
|
411 | |
|
|
412 | q->size = 0; |
|
|
413 | } |
|
|
414 | |
|
|
415 | static int ecb_noinline |
323 | static int reqq_push (etp_reqq *q, ETP_REQ *req) |
416 | reqq_push (etp_reqq *q, ETP_REQ *req) |
324 | { |
417 | { |
325 | int pri = req->pri; |
418 | int pri = req->pri; |
326 | req->next = 0; |
419 | req->next = 0; |
327 | |
420 | |
328 | if (q->qe[pri]) |
421 | if (q->qe[pri]) |
… | |
… | |
334 | q->qe[pri] = q->qs[pri] = req; |
427 | q->qe[pri] = q->qs[pri] = req; |
335 | |
428 | |
336 | return q->size++; |
429 | return q->size++; |
337 | } |
430 | } |
338 | |
431 | |
|
|
432 | static ETP_REQ * ecb_noinline |
339 | static ETP_REQ *reqq_shift (etp_reqq *q) |
433 | reqq_shift (etp_reqq *q) |
340 | { |
434 | { |
341 | int pri; |
435 | int pri; |
342 | |
436 | |
343 | if (!q->size) |
437 | if (!q->size) |
344 | return 0; |
438 | return 0; |
… | |
… | |
359 | } |
453 | } |
360 | |
454 | |
361 | abort (); |
455 | abort (); |
362 | } |
456 | } |
363 | |
457 | |
364 | static void etp_atfork_prepare (void) |
458 | static void ecb_cold |
|
|
459 | etp_thread_init (void) |
365 | { |
460 | { |
366 | X_LOCK (wrklock); |
|
|
367 | X_LOCK (reqlock); |
|
|
368 | X_LOCK (reslock); |
|
|
369 | #if !HAVE_PREADWRITE |
461 | #if !HAVE_PREADWRITE |
370 | X_LOCK (preadwritelock); |
|
|
371 | #endif |
|
|
372 | } |
|
|
373 | |
|
|
374 | static void etp_atfork_parent (void) |
|
|
375 | { |
|
|
376 | #if !HAVE_PREADWRITE |
|
|
377 | X_UNLOCK (preadwritelock); |
462 | X_MUTEX_CREATE (preadwritelock); |
378 | #endif |
463 | #endif |
379 | X_UNLOCK (reslock); |
464 | X_MUTEX_CREATE (wrklock); |
380 | X_UNLOCK (reqlock); |
465 | X_MUTEX_CREATE (reslock); |
381 | X_UNLOCK (wrklock); |
466 | X_MUTEX_CREATE (reqlock); |
|
|
467 | X_COND_CREATE (reqwait); |
382 | } |
468 | } |
383 | |
469 | |
|
|
470 | static void ecb_cold |
384 | static void etp_atfork_child (void) |
471 | etp_atfork_child (void) |
385 | { |
472 | { |
386 | ETP_REQ *prv; |
473 | reqq_init (&req_queue); |
|
|
474 | reqq_init (&res_queue); |
387 | |
475 | |
388 | while ((prv = reqq_shift (&req_queue))) |
476 | wrk_first.next = |
389 | ETP_DESTROY (prv); |
477 | wrk_first.prev = &wrk_first; |
390 | |
|
|
391 | while ((prv = reqq_shift (&res_queue))) |
|
|
392 | ETP_DESTROY (prv); |
|
|
393 | |
|
|
394 | while (wrk_first.next != &wrk_first) |
|
|
395 | { |
|
|
396 | etp_worker *wrk = wrk_first.next; |
|
|
397 | |
|
|
398 | if (wrk->req) |
|
|
399 | ETP_DESTROY (wrk->req); |
|
|
400 | |
|
|
401 | etp_worker_clear (wrk); |
|
|
402 | etp_worker_free (wrk); |
|
|
403 | } |
|
|
404 | |
478 | |
405 | started = 0; |
479 | started = 0; |
406 | idle = 0; |
480 | idle = 0; |
407 | nreqs = 0; |
481 | nreqs = 0; |
408 | nready = 0; |
482 | nready = 0; |
409 | npending = 0; |
483 | npending = 0; |
410 | |
484 | |
411 | etp_atfork_parent (); |
485 | etp_thread_init (); |
412 | } |
486 | } |
413 | |
487 | |
414 | static void |
488 | static void ecb_cold |
415 | etp_once_init (void) |
489 | etp_once_init (void) |
416 | { |
490 | { |
417 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
491 | etp_thread_init (); |
|
|
492 | X_THREAD_ATFORK (0, 0, etp_atfork_child); |
418 | } |
493 | } |
419 | |
494 | |
420 | static int |
495 | static int ecb_cold |
421 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
496 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
422 | { |
497 | { |
423 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
498 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
424 | |
499 | |
425 | pthread_once (&doinit, etp_once_init); |
500 | pthread_once (&doinit, etp_once_init); |
… | |
… | |
430 | return 0; |
505 | return 0; |
431 | } |
506 | } |
432 | |
507 | |
433 | X_THREAD_PROC (etp_proc); |
508 | X_THREAD_PROC (etp_proc); |
434 | |
509 | |
|
|
510 | static void ecb_cold |
435 | static void etp_start_thread (void) |
511 | etp_start_thread (void) |
436 | { |
512 | { |
437 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
513 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
438 | |
514 | |
439 | /*TODO*/ |
515 | /*TODO*/ |
440 | assert (("unable to allocate worker thread data", wrk)); |
516 | assert (("unable to allocate worker thread data", wrk)); |
… | |
… | |
453 | free (wrk); |
529 | free (wrk); |
454 | |
530 | |
455 | X_UNLOCK (wrklock); |
531 | X_UNLOCK (wrklock); |
456 | } |
532 | } |
457 | |
533 | |
|
|
534 | static void |
458 | static void etp_maybe_start_thread (void) |
535 | etp_maybe_start_thread (void) |
459 | { |
536 | { |
460 | if (expect_true (etp_nthreads () >= wanted)) |
537 | if (ecb_expect_true (etp_nthreads () >= wanted)) |
461 | return; |
538 | return; |
462 | |
539 | |
463 | /* todo: maybe use idle here, but might be less exact */ |
540 | /* todo: maybe use idle here, but might be less exact */ |
464 | if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
541 | if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
465 | return; |
542 | return; |
466 | |
543 | |
467 | etp_start_thread (); |
544 | etp_start_thread (); |
468 | } |
545 | } |
469 | |
546 | |
|
|
547 | static void ecb_cold |
470 | static void etp_end_thread (void) |
548 | etp_end_thread (void) |
471 | { |
549 | { |
472 | eio_req *req = calloc (1, sizeof (eio_req)); |
550 | eio_req *req = calloc (1, sizeof (eio_req)); |
473 | |
551 | |
474 | req->type = -1; |
552 | req->type = -1; |
475 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
553 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
… | |
… | |
482 | X_LOCK (wrklock); |
560 | X_LOCK (wrklock); |
483 | --started; |
561 | --started; |
484 | X_UNLOCK (wrklock); |
562 | X_UNLOCK (wrklock); |
485 | } |
563 | } |
486 | |
564 | |
487 | static int etp_poll (void) |
565 | static int |
|
|
566 | etp_poll (void) |
488 | { |
567 | { |
489 | unsigned int maxreqs; |
568 | unsigned int maxreqs; |
490 | unsigned int maxtime; |
569 | unsigned int maxtime; |
491 | struct timeval tv_start, tv_now; |
570 | struct timeval tv_start, tv_now; |
492 | |
571 | |
… | |
… | |
522 | |
601 | |
523 | X_LOCK (reqlock); |
602 | X_LOCK (reqlock); |
524 | --nreqs; |
603 | --nreqs; |
525 | X_UNLOCK (reqlock); |
604 | X_UNLOCK (reqlock); |
526 | |
605 | |
527 | if (expect_false (req->type == EIO_GROUP && req->size)) |
606 | if (ecb_expect_false (req->type == EIO_GROUP && req->size)) |
528 | { |
607 | { |
529 | req->int1 = 1; /* mark request as delayed */ |
608 | req->int1 = 1; /* mark request as delayed */ |
530 | continue; |
609 | continue; |
531 | } |
610 | } |
532 | else |
611 | else |
533 | { |
612 | { |
534 | int res = ETP_FINISH (req); |
613 | int res = ETP_FINISH (req); |
535 | if (expect_false (res)) |
614 | if (ecb_expect_false (res)) |
536 | return res; |
615 | return res; |
537 | } |
616 | } |
538 | |
617 | |
539 | if (expect_false (maxreqs && !--maxreqs)) |
618 | if (ecb_expect_false (maxreqs && !--maxreqs)) |
540 | break; |
619 | break; |
541 | |
620 | |
542 | if (maxtime) |
621 | if (maxtime) |
543 | { |
622 | { |
544 | gettimeofday (&tv_now, 0); |
623 | gettimeofday (&tv_now, 0); |
… | |
… | |
550 | |
629 | |
551 | errno = EAGAIN; |
630 | errno = EAGAIN; |
552 | return -1; |
631 | return -1; |
553 | } |
632 | } |
554 | |
633 | |
|
|
634 | static void |
555 | static void etp_cancel (ETP_REQ *req) |
635 | etp_cancel (ETP_REQ *req) |
556 | { |
636 | { |
557 | X_LOCK (wrklock); |
637 | req->cancelled = 1; |
558 | req->flags |= EIO_FLAG_CANCELLED; |
|
|
559 | X_UNLOCK (wrklock); |
|
|
560 | |
638 | |
561 | eio_grp_cancel (req); |
639 | eio_grp_cancel (req); |
562 | } |
640 | } |
563 | |
641 | |
|
|
642 | static void |
564 | static void etp_submit (ETP_REQ *req) |
643 | etp_submit (ETP_REQ *req) |
565 | { |
644 | { |
566 | req->pri -= ETP_PRI_MIN; |
645 | req->pri -= ETP_PRI_MIN; |
567 | |
646 | |
568 | if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
647 | if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
569 | if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
648 | if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
570 | |
649 | |
571 | if (expect_false (req->type == EIO_GROUP)) |
650 | if (ecb_expect_false (req->type == EIO_GROUP)) |
572 | { |
651 | { |
573 | /* I hope this is worth it :/ */ |
652 | /* I hope this is worth it :/ */ |
574 | X_LOCK (reqlock); |
653 | X_LOCK (reqlock); |
575 | ++nreqs; |
654 | ++nreqs; |
576 | X_UNLOCK (reqlock); |
655 | X_UNLOCK (reqlock); |
… | |
… | |
595 | |
674 | |
596 | etp_maybe_start_thread (); |
675 | etp_maybe_start_thread (); |
597 | } |
676 | } |
598 | } |
677 | } |
599 | |
678 | |
|
|
679 | static void ecb_cold |
600 | static void etp_set_max_poll_time (double nseconds) |
680 | etp_set_max_poll_time (double nseconds) |
601 | { |
681 | { |
602 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
682 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
603 | max_poll_time = nseconds; |
683 | max_poll_time = nseconds * EIO_TICKS; |
604 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
684 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
605 | } |
685 | } |
606 | |
686 | |
|
|
687 | static void ecb_cold |
607 | static void etp_set_max_poll_reqs (unsigned int maxreqs) |
688 | etp_set_max_poll_reqs (unsigned int maxreqs) |
608 | { |
689 | { |
609 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
690 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
610 | max_poll_reqs = maxreqs; |
691 | max_poll_reqs = maxreqs; |
611 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
692 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
612 | } |
693 | } |
613 | |
694 | |
|
|
695 | static void ecb_cold |
614 | static void etp_set_max_idle (unsigned int nthreads) |
696 | etp_set_max_idle (unsigned int nthreads) |
615 | { |
697 | { |
616 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
698 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
617 | max_idle = nthreads <= 0 ? 1 : nthreads; |
699 | max_idle = nthreads; |
618 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
700 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
619 | } |
701 | } |
620 | |
702 | |
|
|
703 | static void ecb_cold |
|
|
704 | etp_set_idle_timeout (unsigned int seconds) |
|
|
705 | { |
|
|
706 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
707 | idle_timeout = seconds; |
|
|
708 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
709 | } |
|
|
710 | |
|
|
711 | static void ecb_cold |
621 | static void etp_set_min_parallel (unsigned int nthreads) |
712 | etp_set_min_parallel (unsigned int nthreads) |
622 | { |
713 | { |
623 | if (wanted < nthreads) |
714 | if (wanted < nthreads) |
624 | wanted = nthreads; |
715 | wanted = nthreads; |
625 | } |
716 | } |
626 | |
717 | |
|
|
718 | static void ecb_cold |
627 | static void etp_set_max_parallel (unsigned int nthreads) |
719 | etp_set_max_parallel (unsigned int nthreads) |
628 | { |
720 | { |
629 | if (wanted > nthreads) |
721 | if (wanted > nthreads) |
630 | wanted = nthreads; |
722 | wanted = nthreads; |
631 | |
723 | |
632 | while (started > wanted) |
724 | while (started > wanted) |
633 | etp_end_thread (); |
725 | etp_end_thread (); |
634 | } |
726 | } |
635 | |
727 | |
636 | /*****************************************************************************/ |
728 | /*****************************************************************************/ |
637 | |
729 | |
|
|
730 | static void |
638 | static void grp_try_feed (eio_req *grp) |
731 | grp_try_feed (eio_req *grp) |
639 | { |
732 | { |
640 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
733 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
641 | { |
734 | { |
642 | grp->flags &= ~EIO_FLAG_GROUPADD; |
735 | grp->flags &= ~EIO_FLAG_GROUPADD; |
643 | |
736 | |
… | |
… | |
650 | break; |
743 | break; |
651 | } |
744 | } |
652 | } |
745 | } |
653 | } |
746 | } |
654 | |
747 | |
|
|
748 | static int |
655 | static int grp_dec (eio_req *grp) |
749 | grp_dec (eio_req *grp) |
656 | { |
750 | { |
657 | --grp->size; |
751 | --grp->size; |
658 | |
752 | |
659 | /* call feeder, if applicable */ |
753 | /* call feeder, if applicable */ |
660 | grp_try_feed (grp); |
754 | grp_try_feed (grp); |
… | |
… | |
664 | return eio_finish (grp); |
758 | return eio_finish (grp); |
665 | else |
759 | else |
666 | return 0; |
760 | return 0; |
667 | } |
761 | } |
668 | |
762 | |
|
|
763 | static void |
669 | void eio_destroy (eio_req *req) |
764 | eio_destroy (eio_req *req) |
670 | { |
765 | { |
671 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
766 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
672 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
767 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
673 | |
768 | |
674 | EIO_DESTROY (req); |
769 | EIO_DESTROY (req); |
675 | } |
770 | } |
676 | |
771 | |
|
|
772 | static int |
677 | static int eio_finish (eio_req *req) |
773 | eio_finish (eio_req *req) |
678 | { |
774 | { |
679 | int res = EIO_FINISH (req); |
775 | int res = EIO_FINISH (req); |
680 | |
776 | |
681 | if (req->grp) |
777 | if (req->grp) |
682 | { |
778 | { |
… | |
… | |
690 | if (grp->grp_first == req) |
786 | if (grp->grp_first == req) |
691 | grp->grp_first = req->grp_next; |
787 | grp->grp_first = req->grp_next; |
692 | |
788 | |
693 | res2 = grp_dec (grp); |
789 | res2 = grp_dec (grp); |
694 | |
790 | |
695 | if (!res && res2) |
791 | if (!res) |
696 | res = res2; |
792 | res = res2; |
697 | } |
793 | } |
698 | |
794 | |
699 | eio_destroy (req); |
795 | eio_destroy (req); |
700 | |
796 | |
701 | return res; |
797 | return res; |
702 | } |
798 | } |
703 | |
799 | |
|
|
800 | void |
704 | void eio_grp_cancel (eio_req *grp) |
801 | eio_grp_cancel (eio_req *grp) |
705 | { |
802 | { |
706 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
803 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
707 | eio_cancel (grp); |
804 | eio_cancel (grp); |
708 | } |
805 | } |
709 | |
806 | |
|
|
807 | void |
710 | void eio_cancel (eio_req *req) |
808 | eio_cancel (eio_req *req) |
711 | { |
809 | { |
712 | etp_cancel (req); |
810 | etp_cancel (req); |
713 | } |
811 | } |
714 | |
812 | |
|
|
813 | void |
715 | void eio_submit (eio_req *req) |
814 | eio_submit (eio_req *req) |
716 | { |
815 | { |
717 | etp_submit (req); |
816 | etp_submit (req); |
718 | } |
817 | } |
719 | |
818 | |
720 | unsigned int eio_nreqs (void) |
819 | unsigned int |
|
|
820 | eio_nreqs (void) |
721 | { |
821 | { |
722 | return etp_nreqs (); |
822 | return etp_nreqs (); |
723 | } |
823 | } |
724 | |
824 | |
725 | unsigned int eio_nready (void) |
825 | unsigned int |
|
|
826 | eio_nready (void) |
726 | { |
827 | { |
727 | return etp_nready (); |
828 | return etp_nready (); |
728 | } |
829 | } |
729 | |
830 | |
730 | unsigned int eio_npending (void) |
831 | unsigned int |
|
|
832 | eio_npending (void) |
731 | { |
833 | { |
732 | return etp_npending (); |
834 | return etp_npending (); |
733 | } |
835 | } |
734 | |
836 | |
735 | unsigned int eio_nthreads (void) |
837 | unsigned int ecb_cold |
|
|
838 | eio_nthreads (void) |
736 | { |
839 | { |
737 | return etp_nthreads (); |
840 | return etp_nthreads (); |
738 | } |
841 | } |
739 | |
842 | |
|
|
843 | void ecb_cold |
740 | void eio_set_max_poll_time (double nseconds) |
844 | eio_set_max_poll_time (double nseconds) |
741 | { |
845 | { |
742 | etp_set_max_poll_time (nseconds); |
846 | etp_set_max_poll_time (nseconds); |
743 | } |
847 | } |
744 | |
848 | |
|
|
849 | void ecb_cold |
745 | void eio_set_max_poll_reqs (unsigned int maxreqs) |
850 | eio_set_max_poll_reqs (unsigned int maxreqs) |
746 | { |
851 | { |
747 | etp_set_max_poll_reqs (maxreqs); |
852 | etp_set_max_poll_reqs (maxreqs); |
748 | } |
853 | } |
749 | |
854 | |
|
|
855 | void ecb_cold |
750 | void eio_set_max_idle (unsigned int nthreads) |
856 | eio_set_max_idle (unsigned int nthreads) |
751 | { |
857 | { |
752 | etp_set_max_idle (nthreads); |
858 | etp_set_max_idle (nthreads); |
753 | } |
859 | } |
754 | |
860 | |
|
|
861 | void ecb_cold |
|
|
862 | eio_set_idle_timeout (unsigned int seconds) |
|
|
863 | { |
|
|
864 | etp_set_idle_timeout (seconds); |
|
|
865 | } |
|
|
866 | |
|
|
867 | void ecb_cold |
755 | void eio_set_min_parallel (unsigned int nthreads) |
868 | eio_set_min_parallel (unsigned int nthreads) |
756 | { |
869 | { |
757 | etp_set_min_parallel (nthreads); |
870 | etp_set_min_parallel (nthreads); |
758 | } |
871 | } |
759 | |
872 | |
|
|
873 | void ecb_cold |
760 | void eio_set_max_parallel (unsigned int nthreads) |
874 | eio_set_max_parallel (unsigned int nthreads) |
761 | { |
875 | { |
762 | etp_set_max_parallel (nthreads); |
876 | etp_set_max_parallel (nthreads); |
763 | } |
877 | } |
764 | |
878 | |
765 | int eio_poll (void) |
879 | int eio_poll (void) |
… | |
… | |
774 | # undef pread |
888 | # undef pread |
775 | # undef pwrite |
889 | # undef pwrite |
776 | # define pread eio__pread |
890 | # define pread eio__pread |
777 | # define pwrite eio__pwrite |
891 | # define pwrite eio__pwrite |
778 | |
892 | |
779 | static ssize_t |
893 | static eio_ssize_t |
780 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
894 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
781 | { |
895 | { |
782 | ssize_t res; |
896 | eio_ssize_t res; |
783 | off_t ooffset; |
897 | off_t ooffset; |
784 | |
898 | |
785 | X_LOCK (preadwritelock); |
899 | X_LOCK (preadwritelock); |
786 | ooffset = lseek (fd, 0, SEEK_CUR); |
900 | ooffset = lseek (fd, 0, SEEK_CUR); |
787 | lseek (fd, offset, SEEK_SET); |
901 | lseek (fd, offset, SEEK_SET); |
… | |
… | |
790 | X_UNLOCK (preadwritelock); |
904 | X_UNLOCK (preadwritelock); |
791 | |
905 | |
792 | return res; |
906 | return res; |
793 | } |
907 | } |
794 | |
908 | |
795 | static ssize_t |
909 | static eio_ssize_t |
796 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
910 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
797 | { |
911 | { |
798 | ssize_t res; |
912 | eio_ssize_t res; |
799 | off_t ooffset; |
913 | off_t ooffset; |
800 | |
914 | |
801 | X_LOCK (preadwritelock); |
915 | X_LOCK (preadwritelock); |
802 | ooffset = lseek (fd, 0, SEEK_CUR); |
916 | ooffset = lseek (fd, 0, SEEK_CUR); |
803 | lseek (fd, offset, SEEK_SET); |
917 | lseek (fd, offset, SEEK_SET); |
… | |
… | |
807 | |
921 | |
808 | return res; |
922 | return res; |
809 | } |
923 | } |
810 | #endif |
924 | #endif |
811 | |
925 | |
812 | #ifndef HAVE_FUTIMES |
926 | #ifndef HAVE_UTIMES |
813 | |
927 | |
814 | # undef utimes |
928 | # undef utimes |
815 | # undef futimes |
|
|
816 | # define utimes(path,times) eio__utimes (path, times) |
929 | # define utimes(path,times) eio__utimes (path, times) |
817 | # define futimes(fd,times) eio__futimes (fd, times) |
|
|
818 | |
930 | |
819 | static int |
931 | static int |
820 | eio__utimes (const char *filename, const struct timeval times[2]) |
932 | eio__utimes (const char *filename, const struct timeval times[2]) |
821 | { |
933 | { |
822 | if (times) |
934 | if (times) |
… | |
… | |
830 | } |
942 | } |
831 | else |
943 | else |
832 | return utime (filename, 0); |
944 | return utime (filename, 0); |
833 | } |
945 | } |
834 | |
946 | |
|
|
947 | #endif |
|
|
948 | |
|
|
949 | #ifndef HAVE_FUTIMES |
|
|
950 | |
|
|
951 | # undef futimes |
|
|
952 | # define futimes(fd,times) eio__futimes (fd, times) |
|
|
953 | |
|
|
954 | static int |
835 | static int eio__futimes (int fd, const struct timeval tv[2]) |
955 | eio__futimes (int fd, const struct timeval tv[2]) |
836 | { |
956 | { |
837 | errno = ENOSYS; |
957 | errno = ENOSYS; |
838 | return -1; |
958 | return -1; |
839 | } |
959 | } |
840 | |
960 | |
… | |
… | |
844 | # undef fdatasync |
964 | # undef fdatasync |
845 | # define fdatasync(fd) fsync (fd) |
965 | # define fdatasync(fd) fsync (fd) |
846 | #endif |
966 | #endif |
847 | |
967 | |
848 | /* sync_file_range always needs emulation */ |
968 | /* sync_file_range always needs emulation */ |
849 | int |
969 | static int |
850 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
970 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
851 | { |
971 | { |
852 | #if HAVE_SYNC_FILE_RANGE |
972 | #if HAVE_SYNC_FILE_RANGE |
853 | int res; |
973 | int res; |
854 | |
974 | |
… | |
… | |
867 | if (!res || errno != ENOSYS) |
987 | if (!res || errno != ENOSYS) |
868 | return res; |
988 | return res; |
869 | #endif |
989 | #endif |
870 | |
990 | |
871 | /* even though we could play tricks with the flags, it's better to always |
991 | /* even though we could play tricks with the flags, it's better to always |
872 | * call fdatasync, as thta matches the expectation of it's users best */ |
992 | * call fdatasync, as that matches the expectation of its users best */ |
873 | return fdatasync (fd); |
993 | return fdatasync (fd); |
|
|
994 | } |
|
|
995 | |
|
|
996 | static int |
|
|
997 | eio__fallocate (int fd, int mode, off_t offset, size_t len) |
|
|
998 | { |
|
|
999 | #if HAVE_FALLOCATE |
|
|
1000 | return fallocate (fd, mode, offset, len); |
|
|
1001 | #else |
|
|
1002 | errno = ENOSYS; |
|
|
1003 | return -1; |
|
|
1004 | #endif |
874 | } |
1005 | } |
875 | |
1006 | |
876 | #if !HAVE_READAHEAD |
1007 | #if !HAVE_READAHEAD |
877 | # undef readahead |
1008 | # undef readahead |
878 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
1009 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
879 | |
1010 | |
880 | static ssize_t |
1011 | static eio_ssize_t |
881 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
1012 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
882 | { |
1013 | { |
883 | size_t todo = count; |
1014 | size_t todo = count; |
884 | dBUF; |
1015 | dBUF; |
885 | |
1016 | |
… | |
… | |
897 | } |
1028 | } |
898 | |
1029 | |
899 | #endif |
1030 | #endif |
900 | |
1031 | |
901 | /* sendfile always needs emulation */ |
1032 | /* sendfile always needs emulation */ |
902 | static ssize_t |
1033 | static eio_ssize_t |
903 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
1034 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
904 | { |
1035 | { |
|
|
1036 | eio_ssize_t written = 0; |
905 | ssize_t res; |
1037 | eio_ssize_t res; |
906 | |
1038 | |
907 | if (!count) |
1039 | if (!count) |
908 | return 0; |
1040 | return 0; |
909 | |
1041 | |
|
|
1042 | for (;;) |
|
|
1043 | { |
|
|
1044 | #ifdef __APPLE__ |
|
|
1045 | # undef HAVE_SENDFILE /* broken, as everything on os x */ |
|
|
1046 | #endif |
910 | #if HAVE_SENDFILE |
1047 | #if HAVE_SENDFILE |
911 | # if __linux |
1048 | # if __linux |
|
|
1049 | off_t soffset = offset; |
912 | res = sendfile (ofd, ifd, &offset, count); |
1050 | res = sendfile (ofd, ifd, &soffset, count); |
913 | |
1051 | |
914 | # elif __freebsd |
1052 | # elif __FreeBSD__ |
915 | /* |
1053 | /* |
916 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
1054 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
917 | * wasted on making it similar to other I/O functions. |
1055 | * wasted on making it similar to other I/O functions. |
918 | */ |
1056 | */ |
919 | { |
|
|
920 | off_t sbytes; |
1057 | off_t sbytes; |
921 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
1058 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
922 | |
1059 | |
923 | if (res < 0 && sbytes) |
1060 | #if 0 /* according to the manpage, this is correct, but broken behaviour */ |
924 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
1061 | /* freebsd' sendfile will return 0 on success */ |
|
|
1062 | /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ |
|
|
1063 | /* not on e.g. EIO or EPIPE - sounds broken */ |
|
|
1064 | if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) |
925 | res = sbytes; |
1065 | res = sbytes; |
926 | } |
1066 | #endif |
|
|
1067 | |
|
|
1068 | /* according to source inspection, this is correct, and useful behaviour */ |
|
|
1069 | if (sbytes) |
|
|
1070 | res = sbytes; |
|
|
1071 | |
|
|
1072 | # elif defined (__APPLE__) |
|
|
1073 | off_t sbytes = count; |
|
|
1074 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
|
|
1075 | |
|
|
1076 | /* according to the manpage, sbytes is always valid */ |
|
|
1077 | if (sbytes) |
|
|
1078 | res = sbytes; |
927 | |
1079 | |
928 | # elif __hpux |
1080 | # elif __hpux |
929 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
1081 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
930 | |
1082 | |
931 | # elif __solaris |
1083 | # elif __solaris |
932 | { |
|
|
933 | struct sendfilevec vec; |
1084 | struct sendfilevec vec; |
934 | size_t sbytes; |
1085 | size_t sbytes; |
935 | |
1086 | |
936 | vec.sfv_fd = ifd; |
1087 | vec.sfv_fd = ifd; |
937 | vec.sfv_flag = 0; |
1088 | vec.sfv_flag = 0; |
938 | vec.sfv_off = offset; |
1089 | vec.sfv_off = offset; |
939 | vec.sfv_len = count; |
1090 | vec.sfv_len = count; |
940 | |
1091 | |
941 | res = sendfilev (ofd, &vec, 1, &sbytes); |
1092 | res = sendfilev (ofd, &vec, 1, &sbytes); |
942 | |
1093 | |
943 | if (res < 0 && sbytes) |
1094 | if (res < 0 && sbytes) |
944 | res = sbytes; |
1095 | res = sbytes; |
945 | } |
|
|
946 | |
1096 | |
947 | # endif |
1097 | # endif |
|
|
1098 | |
|
|
1099 | #elif defined (_WIN32) && 0 |
|
|
1100 | /* does not work, just for documentation of what would need to be done */ |
|
|
1101 | /* actually, cannot be done like this, as TransmitFile changes the file offset, */ |
|
|
1102 | /* libeio guarantees that the file offset does not change, and windows */ |
|
|
1103 | /* has no way to get an independent handle to the same file description */ |
|
|
1104 | HANDLE h = TO_SOCKET (ifd); |
|
|
1105 | SetFilePointer (h, offset, 0, FILE_BEGIN); |
|
|
1106 | res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); |
|
|
1107 | |
948 | #else |
1108 | #else |
949 | res = -1; |
1109 | res = -1; |
950 | errno = ENOSYS; |
1110 | errno = ENOSYS; |
951 | #endif |
1111 | #endif |
952 | |
1112 | |
|
|
1113 | /* we assume sendfile can copy at least 128mb in one go */ |
|
|
1114 | if (res <= 128 * 1024 * 1024) |
|
|
1115 | { |
|
|
1116 | if (res > 0) |
|
|
1117 | written += res; |
|
|
1118 | |
|
|
1119 | if (written) |
|
|
1120 | return written; |
|
|
1121 | |
|
|
1122 | break; |
|
|
1123 | } |
|
|
1124 | else |
|
|
1125 | { |
|
|
1126 | /* if we requested more, then probably the kernel was lazy */ |
|
|
1127 | written += res; |
|
|
1128 | offset += res; |
|
|
1129 | count -= res; |
|
|
1130 | |
|
|
1131 | if (!count) |
|
|
1132 | return written; |
|
|
1133 | } |
|
|
1134 | } |
|
|
1135 | |
953 | if (res < 0 |
1136 | if (res < 0 |
954 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
1137 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
1138 | /* BSDs */ |
|
|
1139 | #ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ |
|
|
1140 | || errno == ENOTSUP |
|
|
1141 | #endif |
|
|
1142 | #ifdef EOPNOTSUPP /* windows */ |
|
|
1143 | || errno == EOPNOTSUPP /* BSDs */ |
|
|
1144 | #endif |
955 | #if __solaris |
1145 | #if __solaris |
956 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
1146 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
957 | #endif |
1147 | #endif |
958 | ) |
1148 | ) |
959 | ) |
1149 | ) |
… | |
… | |
963 | |
1153 | |
964 | res = 0; |
1154 | res = 0; |
965 | |
1155 | |
966 | while (count) |
1156 | while (count) |
967 | { |
1157 | { |
968 | ssize_t cnt; |
1158 | eio_ssize_t cnt; |
969 | |
1159 | |
970 | cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); |
1160 | cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); |
971 | |
1161 | |
972 | if (cnt <= 0) |
1162 | if (cnt <= 0) |
973 | { |
1163 | { |
… | |
… | |
990 | } |
1180 | } |
991 | |
1181 | |
992 | return res; |
1182 | return res; |
993 | } |
1183 | } |
994 | |
1184 | |
|
|
1185 | #ifdef PAGESIZE |
|
|
1186 | # define eio_pagesize() PAGESIZE |
|
|
1187 | #else |
|
|
1188 | static intptr_t |
|
|
1189 | eio_pagesize (void) |
|
|
1190 | { |
|
|
1191 | static intptr_t page; |
|
|
1192 | |
|
|
1193 | if (!page) |
|
|
1194 | page = sysconf (_SC_PAGESIZE); |
|
|
1195 | |
|
|
1196 | return page; |
|
|
1197 | } |
|
|
1198 | #endif |
|
|
1199 | |
|
|
1200 | static void |
|
|
1201 | eio_page_align (void **addr, size_t *length) |
|
|
1202 | { |
|
|
1203 | intptr_t mask = eio_pagesize () - 1; |
|
|
1204 | |
|
|
1205 | /* round down addr */ |
|
|
1206 | intptr_t adj = mask & (intptr_t)*addr; |
|
|
1207 | |
|
|
1208 | *addr = (void *)((intptr_t)*addr - adj); |
|
|
1209 | *length += adj; |
|
|
1210 | |
|
|
1211 | /* round up length */ |
|
|
1212 | *length = (*length + mask) & ~mask; |
|
|
1213 | } |
|
|
1214 | |
|
|
1215 | #if !_POSIX_MEMLOCK |
|
|
1216 | # define eio__mlockall(a) EIO_ENOSYS () |
|
|
1217 | #else |
|
|
1218 | |
|
|
1219 | static int |
|
|
1220 | eio__mlockall (int flags) |
|
|
1221 | { |
|
|
1222 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
|
|
1223 | extern int mallopt (int, int); |
|
|
1224 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
|
|
1225 | #endif |
|
|
1226 | |
|
|
1227 | if (EIO_MCL_CURRENT != MCL_CURRENT |
|
|
1228 | || EIO_MCL_FUTURE != MCL_FUTURE) |
|
|
1229 | { |
|
|
1230 | flags = 0 |
|
|
1231 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
|
|
1232 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); |
|
|
1233 | } |
|
|
1234 | |
|
|
1235 | return mlockall (flags); |
|
|
1236 | } |
|
|
1237 | #endif |
|
|
1238 | |
|
|
1239 | #if !_POSIX_MEMLOCK_RANGE |
|
|
1240 | # define eio__mlock(a,b) EIO_ENOSYS () |
|
|
1241 | #else |
|
|
1242 | |
|
|
1243 | static int |
|
|
1244 | eio__mlock (void *addr, size_t length) |
|
|
1245 | { |
|
|
1246 | eio_page_align (&addr, &length); |
|
|
1247 | |
|
|
1248 | return mlock (addr, length); |
|
|
1249 | } |
|
|
1250 | |
|
|
1251 | #endif |
|
|
1252 | |
|
|
1253 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
1254 | # define eio__msync(a,b,c) EIO_ENOSYS () |
|
|
1255 | #else |
|
|
1256 | |
|
|
1257 | static int |
|
|
1258 | eio__msync (void *mem, size_t len, int flags) |
|
|
1259 | { |
|
|
1260 | eio_page_align (&mem, &len); |
|
|
1261 | |
|
|
1262 | if (EIO_MS_ASYNC != MS_SYNC |
|
|
1263 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
|
|
1264 | || EIO_MS_SYNC != MS_SYNC) |
|
|
1265 | { |
|
|
1266 | flags = 0 |
|
|
1267 | | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0) |
|
|
1268 | | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0) |
|
|
1269 | | (flags & EIO_MS_SYNC ? MS_SYNC : 0); |
|
|
1270 | } |
|
|
1271 | |
|
|
1272 | return msync (mem, len, flags); |
|
|
1273 | } |
|
|
1274 | |
|
|
1275 | #endif |
|
|
1276 | |
|
|
1277 | static int |
|
|
1278 | eio__mtouch (eio_req *req) |
|
|
1279 | { |
|
|
1280 | void *mem = req->ptr2; |
|
|
1281 | size_t len = req->size; |
|
|
1282 | int flags = req->int1; |
|
|
1283 | |
|
|
1284 | eio_page_align (&mem, &len); |
|
|
1285 | |
|
|
1286 | { |
|
|
1287 | intptr_t addr = (intptr_t)mem; |
|
|
1288 | intptr_t end = addr + len; |
|
|
1289 | intptr_t page = eio_pagesize (); |
|
|
1290 | |
|
|
1291 | if (addr < end) |
|
|
1292 | if (flags & EIO_MT_MODIFY) /* modify */ |
|
|
1293 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1294 | else |
|
|
1295 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1296 | } |
|
|
1297 | |
|
|
1298 | return 0; |
|
|
1299 | } |
|
|
1300 | |
|
|
1301 | /*****************************************************************************/ |
|
|
1302 | /* requests implemented outside eio_execute, because they are so large */ |
|
|
1303 | |
|
|
1304 | static void |
|
|
1305 | eio__realpath (eio_req *req, etp_worker *self) |
|
|
1306 | { |
|
|
1307 | char *rel = req->ptr1; |
|
|
1308 | char *res; |
|
|
1309 | char *tmp1, *tmp2; |
|
|
1310 | #if SYMLOOP_MAX > 32 |
|
|
1311 | int symlinks = SYMLOOP_MAX; |
|
|
1312 | #else |
|
|
1313 | int symlinks = 32; |
|
|
1314 | #endif |
|
|
1315 | |
|
|
1316 | req->result = -1; |
|
|
1317 | |
|
|
1318 | errno = EINVAL; |
|
|
1319 | if (!rel) |
|
|
1320 | return; |
|
|
1321 | |
|
|
1322 | errno = ENOENT; |
|
|
1323 | if (!*rel) |
|
|
1324 | return; |
|
|
1325 | |
|
|
1326 | if (!req->ptr2) |
|
|
1327 | { |
|
|
1328 | X_LOCK (wrklock); |
|
|
1329 | req->flags |= EIO_FLAG_PTR2_FREE; |
|
|
1330 | X_UNLOCK (wrklock); |
|
|
1331 | req->ptr2 = malloc (PATH_MAX * 3); |
|
|
1332 | |
|
|
1333 | errno = ENOMEM; |
|
|
1334 | if (!req->ptr2) |
|
|
1335 | return; |
|
|
1336 | } |
|
|
1337 | |
|
|
1338 | res = req->ptr2; |
|
|
1339 | tmp1 = res + PATH_MAX; |
|
|
1340 | tmp2 = tmp1 + PATH_MAX; |
|
|
1341 | |
|
|
1342 | #if 0 /* disabled, the musl way to do things is just too racy */ |
|
|
1343 | #if __linux && defined(O_NONBLOCK) && defined(O_NOATIME) |
|
|
1344 | /* on linux we may be able to ask the kernel */ |
|
|
1345 | { |
|
|
1346 | int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME); |
|
|
1347 | |
|
|
1348 | if (fd >= 0) |
|
|
1349 | { |
|
|
1350 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
|
|
1351 | req->result = readlink (tmp1, res, PATH_MAX); |
|
|
1352 | close (fd); |
|
|
1353 | |
|
|
1354 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
|
|
1355 | |
|
|
1356 | if (req->result > 0) |
|
|
1357 | goto done; |
|
|
1358 | } |
|
|
1359 | else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) |
|
|
1360 | return; |
|
|
1361 | } |
|
|
1362 | #endif |
|
|
1363 | #endif |
|
|
1364 | |
|
|
1365 | if (*rel != '/') |
|
|
1366 | { |
|
|
1367 | if (!getcwd (res, PATH_MAX)) |
|
|
1368 | return; |
|
|
1369 | |
|
|
1370 | if (res [1]) /* only use if not / */ |
|
|
1371 | res += strlen (res); |
|
|
1372 | } |
|
|
1373 | |
|
|
1374 | while (*rel) |
|
|
1375 | { |
|
|
1376 | eio_ssize_t len, linklen; |
|
|
1377 | char *beg = rel; |
|
|
1378 | |
|
|
1379 | while (*rel && *rel != '/') |
|
|
1380 | ++rel; |
|
|
1381 | |
|
|
1382 | len = rel - beg; |
|
|
1383 | |
|
|
1384 | if (!len) /* skip slashes */ |
|
|
1385 | { |
|
|
1386 | ++rel; |
|
|
1387 | continue; |
|
|
1388 | } |
|
|
1389 | |
|
|
1390 | if (beg [0] == '.') |
|
|
1391 | { |
|
|
1392 | if (len == 1) |
|
|
1393 | continue; /* . - nop */ |
|
|
1394 | |
|
|
1395 | if (beg [1] == '.' && len == 2) |
|
|
1396 | { |
|
|
1397 | /* .. - back up one component, if possible */ |
|
|
1398 | |
|
|
1399 | while (res != req->ptr2) |
|
|
1400 | if (*--res == '/') |
|
|
1401 | break; |
|
|
1402 | |
|
|
1403 | continue; |
|
|
1404 | } |
|
|
1405 | } |
|
|
1406 | |
|
|
1407 | errno = ENAMETOOLONG; |
|
|
1408 | if (res + 1 + len + 1 >= tmp1) |
|
|
1409 | return; |
|
|
1410 | |
|
|
1411 | /* copy one component */ |
|
|
1412 | *res = '/'; |
|
|
1413 | memcpy (res + 1, beg, len); |
|
|
1414 | |
|
|
1415 | /* zero-terminate, for readlink */ |
|
|
1416 | res [len + 1] = 0; |
|
|
1417 | |
|
|
1418 | /* now check if it's a symlink */ |
|
|
1419 | linklen = readlink (req->ptr2, tmp1, PATH_MAX); |
|
|
1420 | |
|
|
1421 | if (linklen < 0) |
|
|
1422 | { |
|
|
1423 | if (errno != EINVAL) |
|
|
1424 | return; |
|
|
1425 | |
|
|
1426 | /* it's a normal directory. hopefully */ |
|
|
1427 | res += len + 1; |
|
|
1428 | } |
|
|
1429 | else |
|
|
1430 | { |
|
|
1431 | /* yay, it was a symlink - build new path in tmp2 */ |
|
|
1432 | int rellen = strlen (rel); |
|
|
1433 | |
|
|
1434 | errno = ENAMETOOLONG; |
|
|
1435 | if (linklen + 1 + rellen >= PATH_MAX) |
|
|
1436 | return; |
|
|
1437 | |
|
|
1438 | errno = ELOOP; |
|
|
1439 | if (!--symlinks) |
|
|
1440 | return; |
|
|
1441 | |
|
|
1442 | if (*tmp1 == '/') |
|
|
1443 | res = req->ptr2; /* symlink resolves to an absolute path */ |
|
|
1444 | |
|
|
1445 | /* we need to be careful, as rel might point into tmp2 already */ |
|
|
1446 | memmove (tmp2 + linklen + 1, rel, rellen + 1); |
|
|
1447 | tmp2 [linklen] = '/'; |
|
|
1448 | memcpy (tmp2, tmp1, linklen); |
|
|
1449 | |
|
|
1450 | rel = tmp2; |
|
|
1451 | } |
|
|
1452 | } |
|
|
1453 | |
|
|
1454 | /* special case for the lone root path */ |
|
|
1455 | if (res == req->ptr2) |
|
|
1456 | *res++ = '/'; |
|
|
1457 | |
|
|
1458 | req->result = res - (char *)req->ptr2; |
|
|
1459 | |
|
|
1460 | done: |
|
|
1461 | req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */ |
|
|
1462 | } |
|
|
1463 | |
995 | static signed char |
1464 | static signed char |
996 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1465 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
997 | { |
1466 | { |
998 | return b->score - a->score ? b->score - a->score /* works because our signed char is always 0..100 */ |
1467 | return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ |
999 | : a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0; |
1468 | : a->inode < b->inode ? -1 |
|
|
1469 | : a->inode > b->inode ? 1 |
|
|
1470 | : 0; |
1000 | } |
1471 | } |
1001 | |
1472 | |
|
|
1473 | #define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 |
|
|
1474 | |
1002 | #define EIO_QSORT_CUTOFF 20 /* quite high, but performs well on many filesystems */ |
1475 | #define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
|
|
1476 | #define EIO_SORT_FAST 60 /* when to only use insertion sort */ |
1003 | |
1477 | |
1004 | static void |
1478 | static void |
1005 | eio_dent_sort (eio_dirent *dents, int size) |
1479 | eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits) |
1006 | { |
1480 | { |
|
|
1481 | unsigned char bits [9 + sizeof (eio_ino_t) * 8]; |
|
|
1482 | unsigned char *bit = bits; |
|
|
1483 | |
|
|
1484 | assert (CHAR_BIT == 8); |
|
|
1485 | assert (sizeof (eio_dirent) * 8 < 256); |
|
|
1486 | assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */ |
|
|
1487 | assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */ |
|
|
1488 | |
|
|
1489 | if (size <= EIO_SORT_FAST) |
|
|
1490 | return; |
|
|
1491 | |
|
|
1492 | /* first prepare an array of bits to test in our radix sort */ |
|
|
1493 | /* try to take endianness into account, as well as differences in eio_ino_t sizes */ |
|
|
1494 | /* inode_bits must contain all inodes ORed together */ |
|
|
1495 | /* which is used to skip bits that are 0 everywhere, which is very common */ |
|
|
1496 | { |
|
|
1497 | eio_ino_t endianness; |
1007 | int i, j; |
1498 | int i, j; |
1008 | |
1499 | |
1009 | if (size > EIO_QSORT_CUTOFF * 3) /* skip quicksort for small directories */ |
1500 | /* we store the byte offset of byte n into byte n of "endianness" */ |
|
|
1501 | for (i = 0; i < sizeof (eio_ino_t); ++i) |
|
|
1502 | ((unsigned char *)&endianness)[i] = i; |
|
|
1503 | |
|
|
1504 | *bit++ = 0; |
|
|
1505 | |
|
|
1506 | for (i = 0; i < sizeof (eio_ino_t); ++i) |
|
|
1507 | { |
|
|
1508 | /* shifting off the byte offsets out of "endianness" */ |
|
|
1509 | int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8; |
|
|
1510 | endianness >>= 8; |
|
|
1511 | |
|
|
1512 | for (j = 0; j < 8; ++j) |
|
|
1513 | if (inode_bits & (((eio_ino_t)1) << (i * 8 + j))) |
|
|
1514 | *bit++ = offs + j; |
|
|
1515 | } |
|
|
1516 | |
|
|
1517 | for (j = 0; j < 8; ++j) |
|
|
1518 | if (score_bits & (1 << j)) |
|
|
1519 | *bit++ = offsetof (eio_dirent, score) * 8 + j; |
|
|
1520 | } |
|
|
1521 | |
|
|
1522 | /* now actually do the sorting (a variant of MSD radix sort) */ |
|
|
1523 | { |
|
|
1524 | eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base; |
|
|
1525 | eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end; |
|
|
1526 | unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8]; |
|
|
1527 | int stk_idx = 0; |
|
|
1528 | |
|
|
1529 | base_stk [stk_idx] = dents; |
|
|
1530 | end_stk [stk_idx] = dents + size; |
|
|
1531 | bit_stk [stk_idx] = bit - 1; |
|
|
1532 | |
|
|
1533 | do |
|
|
1534 | { |
|
|
1535 | base = base_stk [stk_idx]; |
|
|
1536 | end = end_stk [stk_idx]; |
|
|
1537 | bit = bit_stk [stk_idx]; |
|
|
1538 | |
|
|
1539 | for (;;) |
|
|
1540 | { |
|
|
1541 | unsigned char O = *bit >> 3; |
|
|
1542 | unsigned char M = 1 << (*bit & 7); |
|
|
1543 | |
|
|
1544 | eio_dirent *a = base; |
|
|
1545 | eio_dirent *b = end; |
|
|
1546 | |
|
|
1547 | if (b - a < EIO_SORT_CUTOFF) |
|
|
1548 | break; |
|
|
1549 | |
|
|
1550 | /* now bit-partition the array on the bit */ |
|
|
1551 | /* this ugly asymmetric loop seems to perform much better than typical */ |
|
|
1552 | /* partition algos found in the literature */ |
|
|
1553 | do |
|
|
1554 | if (!(((unsigned char *)a)[O] & M)) |
|
|
1555 | ++a; |
|
|
1556 | else if (!(((unsigned char *)--b)[O] & M)) |
|
|
1557 | { |
|
|
1558 | eio_dirent tmp = *a; *a = *b; *b = tmp; |
|
|
1559 | ++a; |
|
|
1560 | } |
|
|
1561 | while (b > a); |
|
|
1562 | |
|
|
1563 | /* next bit, or stop, if no bits left in this path */ |
|
|
1564 | if (!*--bit) |
|
|
1565 | break; |
|
|
1566 | |
|
|
1567 | base_stk [stk_idx] = a; |
|
|
1568 | end_stk [stk_idx] = end; |
|
|
1569 | bit_stk [stk_idx] = bit; |
|
|
1570 | ++stk_idx; |
|
|
1571 | |
|
|
1572 | end = a; |
|
|
1573 | } |
|
|
1574 | } |
|
|
1575 | while (stk_idx--); |
|
|
1576 | } |
|
|
1577 | } |
|
|
1578 | |
|
|
1579 | static void |
|
|
1580 | eio_dent_insertion_sort (eio_dirent *dents, int size) |
|
|
1581 | { |
|
|
1582 | /* first move the smallest element to the front, to act as a sentinel */ |
|
|
1583 | { |
|
|
1584 | int i; |
|
|
1585 | eio_dirent *min = dents; |
|
|
1586 | |
|
|
1587 | /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */ |
|
|
1588 | for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; ) |
|
|
1589 | if (EIO_DENT_CMP (dents [i], <, *min)) |
|
|
1590 | min = &dents [i]; |
|
|
1591 | |
|
|
1592 | /* swap elements 0 and j (minimum) */ |
1010 | { |
1593 | { |
1011 | /* first, use quicksort */ |
1594 | eio_dirent tmp = *dents; *dents = *min; *min = tmp; |
1012 | /* should be good for 2**31 entries */ |
1595 | } |
1013 | struct rng { int l, r; } rng [32]; |
1596 | } |
1014 | |
1597 | |
1015 | i = 0; |
1598 | /* then do standard insertion sort, assuming that all elements are >= dents [0] */ |
1016 | rng[0].l = 0; |
1599 | { |
1017 | rng[0].r = size; |
1600 | eio_dirent *i, *j; |
1018 | |
1601 | |
1019 | while (expect_true (i >= 0)) |
1602 | for (i = dents + 1; i < dents + size; ++i) |
1020 | { |
1603 | { |
1021 | int L = rng [i].l; |
1604 | eio_dirent value = *i; |
1022 | int R = rng [i].r - 1; |
|
|
1023 | |
1605 | |
1024 | if (expect_false (L + EIO_QSORT_CUTOFF < R)) |
1606 | for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j) |
1025 | { |
1607 | j [1] = j [0]; |
1026 | eio_dirent piv = dents [L]; |
|
|
1027 | |
1608 | |
1028 | while (L < R) |
1609 | j [1] = value; |
1029 | { |
|
|
1030 | while (eio_dent_cmp (&dents [R], &piv) >= 0 && L < R) |
|
|
1031 | --R; |
|
|
1032 | |
|
|
1033 | if (L < R) |
|
|
1034 | dents [L++] = dents [R]; |
|
|
1035 | |
|
|
1036 | while (eio_dent_cmp (&dents [L], &piv) <= 0 && L < R) |
|
|
1037 | ++L; |
|
|
1038 | |
|
|
1039 | if (L < R) |
|
|
1040 | dents [R--] = dents [L]; |
|
|
1041 | } |
|
|
1042 | |
|
|
1043 | dents [L] = piv; |
|
|
1044 | |
|
|
1045 | ++i; |
|
|
1046 | rng [i].l = L + 1; |
|
|
1047 | rng [i].r = rng [i - 1].r; |
|
|
1048 | rng [i - 1].r = L; |
|
|
1049 | |
|
|
1050 | if (rng [i].r - rng [i].l > rng [i - 1].r - rng [i - 1].l) |
|
|
1051 | { |
|
|
1052 | struct rng t; |
|
|
1053 | |
|
|
1054 | t = rng [i]; rng [i] = rng [i - 1]; rng [i - 1] = t; |
|
|
1055 | } |
|
|
1056 | } |
|
|
1057 | else |
|
|
1058 | --i; |
|
|
1059 | } |
1610 | } |
1060 | } |
1611 | } |
|
|
1612 | } |
1061 | |
1613 | |
1062 | /* use a simple insertion sort at the end */ |
1614 | static void |
1063 | for (i = 1; i < size; ++i) |
1615 | eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits) |
1064 | { |
1616 | { |
1065 | eio_dirent value = dents [i]; |
1617 | if (size <= 1) |
|
|
1618 | return; /* our insertion sort relies on size > 0 */ |
1066 | |
1619 | |
1067 | for (j = i - 1; j >= 0 && eio_dent_cmp (&dents [j], &value) > 0; --j) |
1620 | /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */ |
1068 | dents [j + 1] = dents [j]; |
1621 | /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */ |
|
|
1622 | eio_dent_radix_sort (dents, size, score_bits, inode_bits); |
1069 | |
1623 | |
1070 | dents [j + 1] = value; |
1624 | /* use an insertion sort at the end, or for small arrays, */ |
1071 | } |
1625 | /* as insertion sort is more efficient for small partitions */ |
|
|
1626 | eio_dent_insertion_sort (dents, size); |
1072 | } |
1627 | } |
1073 | |
1628 | |
1074 | /* read a full directory */ |
1629 | /* read a full directory */ |
1075 | static void |
1630 | static void |
1076 | eio__scandir (eio_req *req, etp_worker *self) |
1631 | eio__scandir (eio_req *req, etp_worker *self) |
1077 | { |
1632 | { |
1078 | DIR *dirp; |
|
|
1079 | EIO_STRUCT_DIRENT *entp; |
|
|
1080 | char *name, *names; |
1633 | char *name, *names; |
1081 | int namesalloc = 4096; |
1634 | int namesalloc = 4096 - sizeof (void *) * 4; |
1082 | int namesoffs = 0; |
1635 | int namesoffs = 0; |
1083 | int flags = req->int1; |
1636 | int flags = req->int1; |
1084 | eio_dirent *dents = 0; |
1637 | eio_dirent *dents = 0; |
1085 | int dentalloc = 128; |
1638 | int dentalloc = 128; |
1086 | int dentoffs = 0; |
1639 | int dentoffs = 0; |
|
|
1640 | eio_ino_t inode_bits = 0; |
|
|
1641 | #ifdef _WIN32 |
|
|
1642 | HANDLE dirp; |
|
|
1643 | WIN32_FIND_DATA entp; |
|
|
1644 | #else |
|
|
1645 | DIR *dirp; |
|
|
1646 | EIO_STRUCT_DIRENT *entp; |
|
|
1647 | #endif |
1087 | |
1648 | |
1088 | req->result = -1; |
1649 | req->result = -1; |
1089 | |
1650 | |
1090 | if (!(flags & EIO_READDIR_DENTS)) |
1651 | if (!(flags & EIO_READDIR_DENTS)) |
1091 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
1652 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
1092 | |
1653 | |
1093 | X_LOCK (wrklock); |
1654 | #ifdef _WIN32 |
1094 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
1655 | { |
|
|
1656 | char *path = malloc (MAX_PATH); |
|
|
1657 | _snprintf (path, MAX_PATH, "%s/*", (const char *)req->ptr1); |
|
|
1658 | dirp = FindFirstFile (path, &entp); |
|
|
1659 | free (path); |
|
|
1660 | |
|
|
1661 | if (!dirp) |
|
|
1662 | { |
|
|
1663 | switch (GetLastError ()) |
|
|
1664 | { |
|
|
1665 | case ERROR_FILE_NOT_FOUND: |
|
|
1666 | req->result = 0; |
|
|
1667 | break; |
|
|
1668 | |
|
|
1669 | case ERROR_PATH_NOT_FOUND: |
|
|
1670 | case ERROR_NO_MORE_FILES: |
|
|
1671 | errno = ENOENT; |
|
|
1672 | break; |
|
|
1673 | |
|
|
1674 | case ERROR_NOT_ENOUGH_MEMORY: |
|
|
1675 | errno = ENOMEM; |
|
|
1676 | break; |
|
|
1677 | |
|
|
1678 | default: |
|
|
1679 | errno = EINVAL; |
|
|
1680 | break; |
|
|
1681 | } |
|
|
1682 | |
|
|
1683 | } |
|
|
1684 | } |
|
|
1685 | #else |
1095 | self->dirp = dirp = opendir (req->ptr1); |
1686 | dirp = opendir (req->ptr1); |
|
|
1687 | #endif |
|
|
1688 | |
|
|
1689 | if (req->flags & EIO_FLAG_PTR1_FREE) |
|
|
1690 | free (req->ptr1); |
|
|
1691 | |
1096 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1692 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1097 | req->ptr1 = names = malloc (namesalloc); |
|
|
1098 | req->ptr2 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1693 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1099 | X_UNLOCK (wrklock); |
1694 | req->ptr2 = names = malloc (namesalloc); |
1100 | |
1695 | |
1101 | if (dirp && names && (!flags || dents)) |
1696 | if (dirp && names && (!flags || dents)) |
1102 | for (;;) |
1697 | for (;;) |
1103 | { |
1698 | { |
|
|
1699 | int more; |
|
|
1700 | |
|
|
1701 | #ifdef _WIN32 |
|
|
1702 | more = dirp; |
|
|
1703 | #else |
1104 | errno = 0; |
1704 | errno = 0; |
1105 | entp = readdir (dirp); |
1705 | entp = readdir (dirp); |
|
|
1706 | more = entp; |
|
|
1707 | #endif |
1106 | |
1708 | |
1107 | if (!entp) |
1709 | if (!more) |
1108 | { |
1710 | { |
|
|
1711 | #ifndef _WIN32 |
|
|
1712 | int old_errno = errno; |
|
|
1713 | closedir (dirp); |
|
|
1714 | errno = old_errno; |
|
|
1715 | |
1109 | if (errno) |
1716 | if (errno) |
1110 | break; |
1717 | break; |
|
|
1718 | #endif |
1111 | |
1719 | |
1112 | /* sort etc. */ |
1720 | /* sort etc. */ |
1113 | req->int1 = flags; |
1721 | req->int1 = flags; |
1114 | req->result = dentoffs; |
1722 | req->result = dentoffs; |
1115 | |
1723 | |
1116 | if (dents) |
|
|
1117 | { |
|
|
1118 | eio_dirent *ent = dents + dentoffs; |
|
|
1119 | |
|
|
1120 | while (ent > dents) |
|
|
1121 | (--ent)->name = names + (size_t)ent->name; |
|
|
1122 | } |
|
|
1123 | |
|
|
1124 | if (flags & EIO_READDIR_STAT_ORDER |
1724 | if (flags & EIO_READDIR_STAT_ORDER) |
1125 | || !(~flags & (EIO_READDIR_DIRS_FIRST | EIO_READDIR_FOUND_UNKNOWN))) |
1725 | eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits); |
1126 | eio_dent_sort (dents, dentoffs); /* score depends of DIRS_FIRST */ |
|
|
1127 | else if (flags & EIO_READDIR_DIRS_FIRST) |
1726 | else if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1727 | if (flags & EIO_READDIR_FOUND_UNKNOWN) |
|
|
1728 | eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
|
|
1729 | else |
1128 | { |
1730 | { |
1129 | /* in this case, all is known, and we just put dirs first and sort them */ |
1731 | /* in this case, all is known, and we just put dirs first and sort them */ |
1130 | eio_dirent *ent = dents + dentoffs; |
1732 | eio_dirent *oth = dents + dentoffs; |
1131 | eio_dirent *dir = dents; |
1733 | eio_dirent *dir = dents; |
1132 | |
1734 | |
1133 | /* now move dirs to the front, and non-dirs to the back */ |
1735 | /* now partition dirs to the front, and non-dirs to the back */ |
1134 | /* by walking from both sides and swapping if necessary */ |
1736 | /* by walking from both sides and swapping if necessary */ |
1135 | while (ent > dir) |
1737 | while (oth > dir) |
1136 | { |
1738 | { |
1137 | if (dir->type == DT_DIR) |
1739 | if (dir->type == EIO_DT_DIR) |
1138 | ++dir; |
1740 | ++dir; |
1139 | else |
|
|
1140 | { |
|
|
1141 | --ent; |
|
|
1142 | |
|
|
1143 | if (ent->type == DT_DIR) |
1741 | else if ((--oth)->type == EIO_DT_DIR) |
1144 | { |
1742 | { |
1145 | eio_dirent tmp = *dir; |
1743 | eio_dirent tmp = *dir; *dir = *oth; *oth = tmp; |
1146 | *dir = *ent; |
|
|
1147 | *ent = tmp; |
|
|
1148 | |
1744 | |
1149 | ++dir; |
1745 | ++dir; |
1150 | } |
1746 | } |
1151 | } |
1747 | } |
|
|
1748 | |
|
|
1749 | /* now sort the dirs only (dirs all have the same score) */ |
|
|
1750 | eio_dent_sort (dents, dir - dents, 0, inode_bits); |
1152 | } |
1751 | } |
1153 | |
|
|
1154 | /* now sort the dirs only */ |
|
|
1155 | eio_dent_sort (dents, dir - dents); |
|
|
1156 | } |
|
|
1157 | |
|
|
1158 | /* only provide the names array unless DENTS is specified */ |
|
|
1159 | if (!(flags & EIO_READDIR_DENTS)) |
|
|
1160 | { |
|
|
1161 | X_LOCK (wrklock); |
|
|
1162 | assert (!dents); |
|
|
1163 | req->ptr1 = 0; |
|
|
1164 | req->ptr2 = names; |
|
|
1165 | X_UNLOCK (wrklock); |
|
|
1166 | } |
|
|
1167 | |
1752 | |
1168 | break; |
1753 | break; |
1169 | } |
1754 | } |
1170 | |
1755 | |
1171 | /* now add the entry to our list(s) */ |
1756 | /* now add the entry to our list(s) */ |
1172 | name = entp->d_name; |
1757 | name = D_NAME (entp); |
1173 | |
1758 | |
1174 | /* skip . and .. entries */ |
1759 | /* skip . and .. entries */ |
1175 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1760 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1176 | { |
1761 | { |
1177 | int len = D_NAMLEN (entp) + 1; |
1762 | int len = D_NAMLEN (entp) + 1; |
1178 | |
1763 | |
1179 | while (expect_false (namesoffs + len > namesalloc)) |
1764 | while (ecb_expect_false (namesoffs + len > namesalloc)) |
1180 | { |
1765 | { |
1181 | namesalloc *= 2; |
1766 | namesalloc *= 2; |
1182 | X_LOCK (wrklock); |
|
|
1183 | req->ptr1 = names = realloc (names, namesalloc); |
1767 | req->ptr2 = names = realloc (names, namesalloc); |
1184 | X_UNLOCK (wrklock); |
|
|
1185 | |
1768 | |
1186 | if (!names) |
1769 | if (!names) |
1187 | break; |
1770 | break; |
1188 | } |
1771 | } |
1189 | |
1772 | |
… | |
… | |
1191 | |
1774 | |
1192 | if (dents) |
1775 | if (dents) |
1193 | { |
1776 | { |
1194 | struct eio_dirent *ent; |
1777 | struct eio_dirent *ent; |
1195 | |
1778 | |
1196 | if (expect_false (dentoffs == dentalloc)) |
1779 | if (ecb_expect_false (dentoffs == dentalloc)) |
1197 | { |
1780 | { |
1198 | dentalloc *= 2; |
1781 | dentalloc *= 2; |
1199 | X_LOCK (wrklock); |
|
|
1200 | req->ptr2 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
1782 | req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
1201 | X_UNLOCK (wrklock); |
|
|
1202 | |
1783 | |
1203 | if (!dents) |
1784 | if (!dents) |
1204 | break; |
1785 | break; |
1205 | } |
1786 | } |
1206 | |
1787 | |
1207 | ent = dents + dentoffs; |
1788 | ent = dents + dentoffs; |
1208 | |
1789 | |
1209 | ent->name = (char *)(size_t)namesoffs; /* rather dirtily we store the offset in the pointer */ |
1790 | ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */ |
1210 | ent->namelen = len - 1; |
1791 | ent->namelen = len - 1; |
1211 | ent->inode = D_INO (entp); |
1792 | ent->inode = D_INO (entp); |
|
|
1793 | |
|
|
1794 | inode_bits |= ent->inode; |
1212 | |
1795 | |
1213 | switch (D_TYPE (entp)) |
1796 | switch (D_TYPE (entp)) |
1214 | { |
1797 | { |
1215 | default: |
1798 | default: |
1216 | ent->type = EIO_DT_UNKNOWN; |
1799 | ent->type = EIO_DT_UNKNOWN; |
… | |
… | |
1259 | #ifdef DT_WHT |
1842 | #ifdef DT_WHT |
1260 | case DT_WHT: ent->type = EIO_DT_WHT; break; |
1843 | case DT_WHT: ent->type = EIO_DT_WHT; break; |
1261 | #endif |
1844 | #endif |
1262 | } |
1845 | } |
1263 | |
1846 | |
1264 | ent->score = 0; |
1847 | ent->score = 7; |
1265 | |
1848 | |
1266 | if (flags & EIO_READDIR_DIRS_FIRST) |
1849 | if (flags & EIO_READDIR_DIRS_FIRST) |
1267 | { |
1850 | { |
1268 | if (ent->type == EIO_DT_UNKNOWN) |
1851 | if (ent->type == EIO_DT_UNKNOWN) |
1269 | { |
1852 | { |
1270 | if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ |
1853 | if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ |
1271 | ent->score = 98; |
1854 | ent->score = 1; |
1272 | else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */ |
1855 | else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */ |
1273 | ent->score = len <= 2 ? len + 6 : len <= 4 ? 5 : len <= 7 ? 4 : 1; /* shorter == more likely dir, but avoid too many classes */ |
1856 | ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */ |
1274 | } |
1857 | } |
1275 | else if (ent->type == EIO_DT_DIR) |
1858 | else if (ent->type == EIO_DT_DIR) |
1276 | ent->score = 100; |
1859 | ent->score = 0; |
1277 | } |
1860 | } |
1278 | } |
1861 | } |
1279 | |
1862 | |
1280 | namesoffs += len; |
1863 | namesoffs += len; |
1281 | ++dentoffs; |
1864 | ++dentoffs; |
… | |
… | |
1284 | if (EIO_CANCELLED (req)) |
1867 | if (EIO_CANCELLED (req)) |
1285 | { |
1868 | { |
1286 | errno = ECANCELED; |
1869 | errno = ECANCELED; |
1287 | break; |
1870 | break; |
1288 | } |
1871 | } |
|
|
1872 | |
|
|
1873 | #ifdef _WIN32 |
|
|
1874 | if (!FindNextFile (dirp, &entp)) |
|
|
1875 | { |
|
|
1876 | FindClose (dirp); |
|
|
1877 | dirp = 0; |
|
|
1878 | } |
|
|
1879 | #endif |
1289 | } |
1880 | } |
1290 | } |
|
|
1291 | |
|
|
1292 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
1293 | # undef msync |
|
|
1294 | # define msync(a,b,c) ((errno = ENOSYS), -1) |
|
|
1295 | #endif |
|
|
1296 | |
|
|
1297 | int |
|
|
1298 | eio__mtouch (void *mem, size_t len, int flags) |
|
|
1299 | { |
|
|
1300 | intptr_t addr = (intptr_t)mem; |
|
|
1301 | intptr_t end = addr + len; |
|
|
1302 | #ifdef PAGESIZE |
|
|
1303 | const intptr_t page = PAGESIZE; |
|
|
1304 | #else |
|
|
1305 | static intptr_t page; |
|
|
1306 | |
|
|
1307 | if (!page) |
|
|
1308 | page = sysconf (_SC_PAGESIZE); |
|
|
1309 | #endif |
|
|
1310 | |
|
|
1311 | addr &= ~(page - 1); /* assume page size is always a power of two */ |
|
|
1312 | |
|
|
1313 | if (addr < end) |
|
|
1314 | if (flags) /* modify */ |
|
|
1315 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); |
|
|
1316 | else |
|
|
1317 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); |
|
|
1318 | |
|
|
1319 | return 0; |
|
|
1320 | } |
1881 | } |
1321 | |
1882 | |
1322 | /*****************************************************************************/ |
1883 | /*****************************************************************************/ |
1323 | |
1884 | |
1324 | #define ALLOC(len) \ |
1885 | #define ALLOC(len) \ |
… | |
… | |
1340 | { |
1901 | { |
1341 | ETP_REQ *req; |
1902 | ETP_REQ *req; |
1342 | struct timespec ts; |
1903 | struct timespec ts; |
1343 | etp_worker *self = (etp_worker *)thr_arg; |
1904 | etp_worker *self = (etp_worker *)thr_arg; |
1344 | |
1905 | |
1345 | /* try to distribute timeouts somewhat randomly */ |
1906 | /* try to distribute timeouts somewhat evenly */ |
1346 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
1907 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
1347 | |
1908 | |
1348 | for (;;) |
1909 | for (;;) |
1349 | { |
1910 | { |
|
|
1911 | ts.tv_sec = 0; |
|
|
1912 | |
1350 | X_LOCK (reqlock); |
1913 | X_LOCK (reqlock); |
1351 | |
1914 | |
1352 | for (;;) |
1915 | for (;;) |
1353 | { |
1916 | { |
1354 | self->req = req = reqq_shift (&req_queue); |
1917 | self->req = req = reqq_shift (&req_queue); |
1355 | |
1918 | |
1356 | if (req) |
1919 | if (req) |
1357 | break; |
1920 | break; |
1358 | |
1921 | |
|
|
1922 | if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */ |
|
|
1923 | { |
|
|
1924 | X_UNLOCK (reqlock); |
|
|
1925 | X_LOCK (wrklock); |
|
|
1926 | --started; |
|
|
1927 | X_UNLOCK (wrklock); |
|
|
1928 | goto quit; |
|
|
1929 | } |
|
|
1930 | |
1359 | ++idle; |
1931 | ++idle; |
1360 | |
1932 | |
1361 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
1933 | if (idle <= max_idle) |
1362 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1934 | /* we are allowed to idle, so do so without any timeout */ |
|
|
1935 | X_COND_WAIT (reqwait, reqlock); |
|
|
1936 | else |
1363 | { |
1937 | { |
1364 | if (idle > max_idle) |
1938 | /* initialise timeout once */ |
1365 | { |
1939 | if (!ts.tv_sec) |
1366 | --idle; |
1940 | ts.tv_sec = time (0) + idle_timeout; |
1367 | X_UNLOCK (reqlock); |
|
|
1368 | X_LOCK (wrklock); |
|
|
1369 | --started; |
|
|
1370 | X_UNLOCK (wrklock); |
|
|
1371 | goto quit; |
|
|
1372 | } |
|
|
1373 | |
1941 | |
1374 | /* we are allowed to idle, so do so without any timeout */ |
|
|
1375 | X_COND_WAIT (reqwait, reqlock); |
1942 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
|
|
1943 | ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */ |
1376 | } |
1944 | } |
1377 | |
1945 | |
1378 | --idle; |
1946 | --idle; |
1379 | } |
1947 | } |
1380 | |
1948 | |
… | |
… | |
1383 | X_UNLOCK (reqlock); |
1951 | X_UNLOCK (reqlock); |
1384 | |
1952 | |
1385 | if (req->type < 0) |
1953 | if (req->type < 0) |
1386 | goto quit; |
1954 | goto quit; |
1387 | |
1955 | |
1388 | if (!EIO_CANCELLED (req)) |
|
|
1389 | ETP_EXECUTE (self, req); |
1956 | ETP_EXECUTE (self, req); |
1390 | |
1957 | |
1391 | X_LOCK (reslock); |
1958 | X_LOCK (reslock); |
1392 | |
1959 | |
1393 | ++npending; |
1960 | ++npending; |
1394 | |
1961 | |
… | |
… | |
1409 | return 0; |
1976 | return 0; |
1410 | } |
1977 | } |
1411 | |
1978 | |
1412 | /*****************************************************************************/ |
1979 | /*****************************************************************************/ |
1413 | |
1980 | |
|
|
1981 | int ecb_cold |
1414 | int eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1982 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1415 | { |
1983 | { |
1416 | return etp_init (want_poll, done_poll); |
1984 | return etp_init (want_poll, done_poll); |
1417 | } |
1985 | } |
1418 | |
1986 | |
|
|
1987 | ecb_inline void |
1419 | static void eio_api_destroy (eio_req *req) |
1988 | eio_api_destroy (eio_req *req) |
1420 | { |
1989 | { |
1421 | free (req); |
1990 | free (req); |
1422 | } |
1991 | } |
1423 | |
1992 | |
1424 | #define REQ(rtype) \ |
1993 | #define REQ(rtype) \ |
… | |
… | |
1443 | { \ |
2012 | { \ |
1444 | eio_api_destroy (req); \ |
2013 | eio_api_destroy (req); \ |
1445 | return 0; \ |
2014 | return 0; \ |
1446 | } |
2015 | } |
1447 | |
2016 | |
|
|
2017 | static void |
1448 | static void eio_execute (etp_worker *self, eio_req *req) |
2018 | eio_execute (etp_worker *self, eio_req *req) |
1449 | { |
2019 | { |
1450 | errno = 0; |
2020 | if (ecb_expect_false (EIO_CANCELLED (req))) |
|
|
2021 | { |
|
|
2022 | req->result = -1; |
|
|
2023 | req->errorno = ECANCELED; |
|
|
2024 | return; |
|
|
2025 | } |
1451 | |
2026 | |
1452 | switch (req->type) |
2027 | switch (req->type) |
1453 | { |
2028 | { |
1454 | case EIO_READ: ALLOC (req->size); |
2029 | case EIO_READ: ALLOC (req->size); |
1455 | req->result = req->offs >= 0 |
2030 | req->result = req->offs >= 0 |
… | |
… | |
1467 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
2042 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1468 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
2043 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1469 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
2044 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1470 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
2045 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1471 | |
2046 | |
|
|
2047 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
2048 | req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
2049 | case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
2050 | req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
2051 | |
1472 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
2052 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
1473 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
2053 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
1474 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
2054 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
1475 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
2055 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
1476 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
2056 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
… | |
… | |
1483 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
2063 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1484 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
2064 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1485 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
2065 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1486 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
2066 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1487 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
2067 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1488 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; |
2068 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1489 | |
2069 | |
|
|
2070 | case EIO_REALPATH: eio__realpath (req, self); break; |
|
|
2071 | |
1490 | case EIO_READLINK: ALLOC (NAME_MAX); |
2072 | case EIO_READLINK: ALLOC (PATH_MAX); |
1491 | req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
2073 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
1492 | |
2074 | |
1493 | case EIO_SYNC: req->result = 0; sync (); break; |
2075 | case EIO_SYNC: req->result = 0; sync (); break; |
1494 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
2076 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1495 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
2077 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1496 | case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break; |
2078 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
|
|
2079 | case EIO_MTOUCH: req->result = eio__mtouch (req); break; |
1497 | case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; |
2080 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
|
|
2081 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
1498 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
2082 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
|
|
2083 | case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break; |
1499 | |
2084 | |
1500 | case EIO_READDIR: eio__scandir (req, self); break; |
2085 | case EIO_READDIR: eio__scandir (req, self); break; |
1501 | |
2086 | |
1502 | case EIO_BUSY: |
2087 | case EIO_BUSY: |
1503 | #ifdef _WIN32 |
2088 | #ifdef _WIN32 |
1504 | Sleep (req->nv1 * 1000.); |
2089 | Sleep (req->nv1 * 1e3); |
1505 | #else |
2090 | #else |
1506 | { |
2091 | { |
1507 | struct timeval tv; |
2092 | struct timeval tv; |
1508 | |
2093 | |
1509 | tv.tv_sec = req->nv1; |
2094 | tv.tv_sec = req->nv1; |
1510 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; |
2095 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6; |
1511 | |
2096 | |
1512 | req->result = select (0, 0, 0, 0, &tv); |
2097 | req->result = select (0, 0, 0, 0, &tv); |
1513 | } |
2098 | } |
1514 | #endif |
2099 | #endif |
1515 | break; |
2100 | break; |
… | |
… | |
1530 | times = tv; |
2115 | times = tv; |
1531 | } |
2116 | } |
1532 | else |
2117 | else |
1533 | times = 0; |
2118 | times = 0; |
1534 | |
2119 | |
1535 | |
|
|
1536 | req->result = req->type == EIO_FUTIME |
2120 | req->result = req->type == EIO_FUTIME |
1537 | ? futimes (req->int1, times) |
2121 | ? futimes (req->int1, times) |
1538 | : utimes (req->ptr1, times); |
2122 | : utimes (req->ptr1, times); |
1539 | } |
2123 | } |
1540 | break; |
2124 | break; |
… | |
… | |
1545 | case EIO_NOP: |
2129 | case EIO_NOP: |
1546 | req->result = 0; |
2130 | req->result = 0; |
1547 | break; |
2131 | break; |
1548 | |
2132 | |
1549 | case EIO_CUSTOM: |
2133 | case EIO_CUSTOM: |
1550 | ((void (*)(eio_req *))req->feed) (req); |
2134 | req->feed (req); |
1551 | break; |
2135 | break; |
1552 | |
2136 | |
1553 | default: |
2137 | default: |
|
|
2138 | errno = ENOSYS; |
1554 | req->result = -1; |
2139 | req->result = -1; |
1555 | break; |
2140 | break; |
1556 | } |
2141 | } |
1557 | |
2142 | |
1558 | req->errorno = errno; |
2143 | req->errorno = errno; |
… | |
… | |
1588 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
2173 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1589 | { |
2174 | { |
1590 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
2175 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1591 | } |
2176 | } |
1592 | |
2177 | |
|
|
2178 | eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data) |
|
|
2179 | { |
|
|
2180 | REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND; |
|
|
2181 | } |
|
|
2182 | |
|
|
2183 | eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data) |
|
|
2184 | { |
|
|
2185 | REQ (EIO_MLOCKALL); req->int1 = flags; SEND; |
|
|
2186 | } |
|
|
2187 | |
1593 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
2188 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
1594 | { |
2189 | { |
1595 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
2190 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
1596 | } |
2191 | } |
1597 | |
2192 | |
|
|
2193 | eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data) |
|
|
2194 | { |
|
|
2195 | REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND; |
|
|
2196 | } |
|
|
2197 | |
1598 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
2198 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
1599 | { |
2199 | { |
1600 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
2200 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
1601 | } |
2201 | } |
1602 | |
2202 | |
… | |
… | |
1623 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
2223 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
1624 | { |
2224 | { |
1625 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
2225 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
1626 | } |
2226 | } |
1627 | |
2227 | |
|
|
2228 | eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data) |
|
|
2229 | { |
|
|
2230 | REQ (EIO_FSTATVFS); req->int1 = fd; SEND; |
|
|
2231 | } |
|
|
2232 | |
1628 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
2233 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
1629 | { |
2234 | { |
1630 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
2235 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
1631 | } |
2236 | } |
1632 | |
2237 | |
… | |
… | |
1638 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) |
2243 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) |
1639 | { |
2244 | { |
1640 | REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
2245 | REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
1641 | } |
2246 | } |
1642 | |
2247 | |
1643 | eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
2248 | eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data) |
1644 | { |
2249 | { |
1645 | REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
2250 | REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1646 | } |
2251 | } |
1647 | |
2252 | |
1648 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) |
2253 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) |
… | |
… | |
1668 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) |
2273 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) |
1669 | { |
2274 | { |
1670 | REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; |
2275 | REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; |
1671 | } |
2276 | } |
1672 | |
2277 | |
1673 | eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
2278 | eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data) |
1674 | { |
2279 | { |
1675 | REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
2280 | REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1676 | } |
2281 | } |
1677 | |
2282 | |
1678 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
2283 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
… | |
… | |
1694 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
2299 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
1695 | { |
2300 | { |
1696 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
2301 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
1697 | } |
2302 | } |
1698 | |
2303 | |
|
|
2304 | eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data) |
|
|
2305 | { |
|
|
2306 | return eio__1path (EIO_REALPATH, path, pri, cb, data); |
|
|
2307 | } |
|
|
2308 | |
1699 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
2309 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
1700 | { |
2310 | { |
1701 | return eio__1path (EIO_STAT, path, pri, cb, data); |
2311 | return eio__1path (EIO_STAT, path, pri, cb, data); |
1702 | } |
2312 | } |
1703 | |
2313 | |
1704 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
2314 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
1705 | { |
2315 | { |
1706 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
2316 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
1707 | } |
2317 | } |
1708 | |
2318 | |
|
|
2319 | eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data) |
|
|
2320 | { |
|
|
2321 | return eio__1path (EIO_STATVFS, path, pri, cb, data); |
|
|
2322 | } |
|
|
2323 | |
1709 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
2324 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
1710 | { |
2325 | { |
1711 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
2326 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
1712 | } |
2327 | } |
1713 | |
2328 | |
… | |
… | |
1721 | REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
2336 | REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
1722 | } |
2337 | } |
1723 | |
2338 | |
1724 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
2339 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1725 | { |
2340 | { |
1726 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; |
2341 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND; |
1727 | } |
2342 | } |
1728 | |
2343 | |
1729 | static eio_req * |
2344 | static eio_req * |
1730 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2345 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1731 | { |
2346 | { |
… | |
… | |
1755 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2370 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1756 | { |
2371 | { |
1757 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2372 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
1758 | } |
2373 | } |
1759 | |
2374 | |
1760 | eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) |
2375 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data) |
1761 | { |
2376 | { |
1762 | REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND; |
2377 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
1763 | } |
2378 | } |
1764 | |
2379 | |
1765 | #endif |
2380 | #endif |
1766 | |
2381 | |
1767 | eio_req *eio_grp (eio_cb cb, void *data) |
2382 | eio_req *eio_grp (eio_cb cb, void *data) |
… | |
… | |
1776 | #undef SEND |
2391 | #undef SEND |
1777 | |
2392 | |
1778 | /*****************************************************************************/ |
2393 | /*****************************************************************************/ |
1779 | /* grp functions */ |
2394 | /* grp functions */ |
1780 | |
2395 | |
|
|
2396 | void |
1781 | void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
2397 | eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
1782 | { |
2398 | { |
1783 | grp->int2 = limit; |
2399 | grp->int2 = limit; |
1784 | grp->feed = feed; |
2400 | grp->feed = feed; |
1785 | |
2401 | |
1786 | grp_try_feed (grp); |
2402 | grp_try_feed (grp); |
1787 | } |
2403 | } |
1788 | |
2404 | |
|
|
2405 | void |
1789 | void eio_grp_limit (eio_req *grp, int limit) |
2406 | eio_grp_limit (eio_req *grp, int limit) |
1790 | { |
2407 | { |
1791 | grp->int2 = limit; |
2408 | grp->int2 = limit; |
1792 | |
2409 | |
1793 | grp_try_feed (grp); |
2410 | grp_try_feed (grp); |
1794 | } |
2411 | } |
1795 | |
2412 | |
|
|
2413 | void |
1796 | void eio_grp_add (eio_req *grp, eio_req *req) |
2414 | eio_grp_add (eio_req *grp, eio_req *req) |
1797 | { |
2415 | { |
1798 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
2416 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
1799 | |
2417 | |
1800 | grp->flags |= EIO_FLAG_GROUPADD; |
2418 | grp->flags |= EIO_FLAG_GROUPADD; |
1801 | |
2419 | |
… | |
… | |
1812 | } |
2430 | } |
1813 | |
2431 | |
1814 | /*****************************************************************************/ |
2432 | /*****************************************************************************/ |
1815 | /* misc garbage */ |
2433 | /* misc garbage */ |
1816 | |
2434 | |
|
|
2435 | eio_ssize_t |
1817 | ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
2436 | eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
1818 | { |
2437 | { |
1819 | etp_worker wrk; |
2438 | etp_worker wrk; |
1820 | ssize_t ret; |
2439 | eio_ssize_t ret; |
1821 | |
2440 | |
1822 | wrk.dbuf = 0; |
2441 | wrk.dbuf = 0; |
1823 | |
2442 | |
1824 | ret = eio__sendfile (ofd, ifd, offset, count, &wrk); |
2443 | ret = eio__sendfile (ofd, ifd, offset, count, &wrk); |
1825 | |
2444 | |