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1 | /* |
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2 | * libeio implementation |
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3 | * |
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4 | * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de> |
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5 | * All rights reserved. |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without modifica- |
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8 | * tion, are permitted provided that the following conditions are met: |
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9 | * |
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10 | * 1. Redistributions of source code must retain the above copyright notice, |
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11 | * this list of conditions and the following disclaimer. |
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12 | * |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | * |
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28 | * Alternatively, the contents of this file may be used under the terms of |
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29 | * the GNU General Public License ("GPL") version 2 or any later version, |
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30 | * in which case the provisions of the GPL are applicable instead of |
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31 | * the above. If you wish to allow the use of your version of this file |
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32 | * only under the terms of the GPL and not to allow others to use your |
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33 | * version of this file under the BSD license, indicate your decision |
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34 | * by deleting the provisions above and replace them with the notice |
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35 | * and other provisions required by the GPL. If you do not delete the |
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36 | * provisions above, a recipient may use your version of this file under |
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37 | * either the BSD or the GPL. |
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38 | */ |
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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 | |
1 | #include "eio.h" |
44 | #include "eio.h" |
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45 | #include "ecb.h" |
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46 | |
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47 | #ifdef EIO_STACKSIZE |
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48 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
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49 | #endif |
2 | #include "xthread.h" |
50 | #include "xthread.h" |
3 | |
51 | |
4 | #include <errno.h> |
52 | #include <errno.h> |
5 | #include <stddef.h> |
53 | #include <stddef.h> |
6 | #include <stdlib.h> |
54 | #include <stdlib.h> |
7 | #include <string.h> |
55 | #include <string.h> |
8 | #include <errno.h> |
56 | #include <errno.h> |
9 | #include <sys/types.h> |
57 | #include <sys/types.h> |
10 | #include <sys/stat.h> |
58 | #include <sys/stat.h> |
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59 | #include <sys/statvfs.h> |
11 | #include <limits.h> |
60 | #include <limits.h> |
12 | #include <fcntl.h> |
61 | #include <fcntl.h> |
13 | #include <assert.h> |
62 | #include <assert.h> |
14 | |
63 | |
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64 | /* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */ |
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65 | /* intptr_t only comes from stdint.h, says idiot openbsd coder */ |
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66 | #if HAVE_STDINT_H |
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67 | # include <stdint.h> |
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68 | #endif |
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69 | |
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70 | #ifndef ECANCELED |
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71 | # define ECANCELED EDOM |
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72 | #endif |
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73 | |
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74 | static void eio_destroy (eio_req *req); |
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75 | |
15 | #ifndef EIO_FINISH |
76 | #ifndef EIO_FINISH |
16 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
77 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
17 | #endif |
78 | #endif |
18 | |
79 | |
19 | #ifndef EIO_DESTROY |
80 | #ifndef EIO_DESTROY |
… | |
… | |
25 | #endif |
86 | #endif |
26 | |
87 | |
27 | #ifdef _WIN32 |
88 | #ifdef _WIN32 |
28 | |
89 | |
29 | /*doh*/ |
90 | /*doh*/ |
30 | |
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31 | #else |
91 | #else |
32 | |
92 | |
33 | # include "config.h" |
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34 | # include <sys/time.h> |
93 | # include <sys/time.h> |
35 | # include <sys/select.h> |
94 | # include <sys/select.h> |
36 | # include <unistd.h> |
95 | # include <unistd.h> |
37 | # include <utime.h> |
96 | # include <utime.h> |
38 | # include <signal.h> |
97 | # include <signal.h> |
39 | # include <dirent.h> |
98 | # include <dirent.h> |
40 | |
99 | |
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100 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
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101 | # include <sys/mman.h> |
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102 | #endif |
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103 | |
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104 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
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105 | # if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
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106 | # define _DIRENT_HAVE_D_TYPE /* sigh */ |
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107 | # define D_INO(de) (de)->d_fileno |
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108 | # define D_NAMLEN(de) (de)->d_namlen |
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109 | # elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 |
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110 | # define D_INO(de) (de)->d_ino |
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111 | # endif |
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112 | |
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113 | #ifdef _D_EXACT_NAMLEN |
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114 | # undef D_NAMLEN |
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115 | # define D_NAMLEN(de) _D_EXACT_NAMLEN (de) |
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116 | #endif |
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117 | |
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118 | # ifdef _DIRENT_HAVE_D_TYPE |
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119 | # define D_TYPE(de) (de)->d_type |
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120 | # endif |
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121 | |
41 | # ifndef EIO_STRUCT_DIRENT |
122 | # ifndef EIO_STRUCT_DIRENT |
42 | # define EIO_STRUCT_DIRENT struct dirent |
123 | # define EIO_STRUCT_DIRENT struct dirent |
43 | # endif |
124 | # endif |
44 | |
125 | |
45 | #endif |
126 | #endif |
46 | |
127 | |
47 | # ifndef EIO_STRUCT_STAT |
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48 | # define EIO_STRUCT_STAT struct stat |
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49 | # endif |
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50 | |
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51 | #if HAVE_SENDFILE |
128 | #if HAVE_SENDFILE |
52 | # if __linux |
129 | # if __linux |
53 | # include <sys/sendfile.h> |
130 | # include <sys/sendfile.h> |
54 | # elif __freebsd |
131 | # elif __FreeBSD__ || defined __APPLE__ |
55 | # include <sys/socket.h> |
132 | # include <sys/socket.h> |
56 | # include <sys/uio.h> |
133 | # include <sys/uio.h> |
57 | # elif __hpux |
134 | # elif __hpux |
58 | # include <sys/socket.h> |
135 | # include <sys/socket.h> |
59 | # elif __solaris /* not yet */ |
136 | # elif __solaris |
60 | # include <sys/sendfile.h> |
137 | # include <sys/sendfile.h> |
61 | # else |
138 | # else |
62 | # error sendfile support requested but not available |
139 | # error sendfile support requested but not available |
63 | # endif |
140 | # endif |
64 | #endif |
141 | #endif |
65 | |
142 | |
66 | /* number of seconds after which an idle threads exit */ |
143 | #ifndef D_TYPE |
67 | #define IDLE_TIMEOUT 10 |
144 | # define D_TYPE(de) 0 |
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145 | #endif |
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146 | #ifndef D_INO |
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147 | # define D_INO(de) 0 |
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148 | #endif |
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149 | #ifndef D_NAMLEN |
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150 | # define D_NAMLEN(de) strlen ((de)->d_name) |
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151 | #endif |
68 | |
152 | |
69 | /* used for struct dirent, AIX doesn't provide it */ |
153 | /* used for struct dirent, AIX doesn't provide it */ |
70 | #ifndef NAME_MAX |
154 | #ifndef NAME_MAX |
71 | # define NAME_MAX 4096 |
155 | # define NAME_MAX 4096 |
72 | #endif |
156 | #endif |
73 | |
157 | |
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158 | /* used for readlink etc. */ |
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159 | #ifndef PATH_MAX |
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160 | # define PATH_MAX 4096 |
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161 | #endif |
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162 | |
74 | /* buffer size for various temporary buffers */ |
163 | /* buffer size for various temporary buffers */ |
75 | #define EIO_BUFSIZE 65536 |
164 | #define EIO_BUFSIZE 65536 |
76 | |
165 | |
77 | #define dBUF \ |
166 | #define dBUF \ |
78 | char *eio_buf; \ |
167 | char *eio_buf; \ |
79 | X_LOCK (wrklock); \ |
168 | ETP_WORKER_LOCK (self); \ |
80 | self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ |
169 | self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ |
81 | X_UNLOCK (wrklock); \ |
170 | ETP_WORKER_UNLOCK (self); \ |
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171 | errno = ENOMEM; \ |
82 | if (!eio_buf) \ |
172 | if (!eio_buf) \ |
83 | return -1; |
173 | return -1; |
84 | |
174 | |
85 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
175 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
86 | |
176 | |
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177 | #define ETP_PRI_MIN EIO_PRI_MIN |
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178 | #define ETP_PRI_MAX EIO_PRI_MAX |
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179 | |
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180 | struct etp_worker; |
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181 | |
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182 | #define ETP_REQ eio_req |
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183 | #define ETP_DESTROY(req) eio_destroy (req) |
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184 | static int eio_finish (eio_req *req); |
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185 | #define ETP_FINISH(req) eio_finish (req) |
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186 | static void eio_execute (struct etp_worker *self, eio_req *req); |
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187 | #define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) |
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188 | |
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189 | #define ETP_WORKER_CLEAR(req) \ |
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190 | if (wrk->dbuf) \ |
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191 | { \ |
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192 | free (wrk->dbuf); \ |
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193 | wrk->dbuf = 0; \ |
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194 | } \ |
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195 | \ |
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196 | if (wrk->dirp) \ |
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197 | { \ |
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198 | closedir (wrk->dirp); \ |
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199 | wrk->dirp = 0; \ |
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200 | } |
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201 | |
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202 | #define ETP_WORKER_COMMON \ |
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203 | void *dbuf; \ |
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204 | DIR *dirp; |
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205 | |
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206 | /*****************************************************************************/ |
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207 | |
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208 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
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209 | |
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210 | /* calculate time difference in ~1/EIO_TICKS of a second */ |
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211 | ecb_inline int |
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212 | tvdiff (struct timeval *tv1, struct timeval *tv2) |
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213 | { |
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214 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
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215 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
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216 | } |
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217 | |
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218 | static unsigned int started, idle, wanted = 4; |
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219 | |
87 | static void (*want_poll_cb) (void); |
220 | static void (*want_poll_cb) (void); |
88 | static void (*done_poll_cb) (void); |
221 | static void (*done_poll_cb) (void); |
89 | |
222 | |
90 | static unsigned int max_poll_time = 0; |
223 | static unsigned int max_poll_time; /* reslock */ |
91 | static unsigned int max_poll_reqs = 0; |
224 | static unsigned int max_poll_reqs; /* reslock */ |
92 | |
225 | |
93 | /* calculcate time difference in ~1/EIO_TICKS of a second */ |
226 | static volatile unsigned int nreqs; /* reqlock */ |
94 | static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
227 | static volatile unsigned int nready; /* reqlock */ |
95 | { |
228 | static volatile unsigned int npending; /* reqlock */ |
96 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
229 | static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */ |
97 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
230 | static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */ |
98 | } |
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99 | |
231 | |
100 | static unsigned int started, idle, wanted; |
232 | static xmutex_t wrklock; |
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233 | static xmutex_t reslock; |
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234 | static xmutex_t reqlock; |
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235 | static xcond_t reqwait; |
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236 | |
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237 | #if !HAVE_PREADWRITE |
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238 | /* |
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239 | * make our pread/pwrite emulation safe against themselves, but not against |
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240 | * normal read/write by using a mutex. slows down execution a lot, |
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241 | * but that's your problem, not mine. |
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242 | */ |
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243 | static xmutex_t preadwritelock = X_MUTEX_INIT; |
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244 | #endif |
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245 | |
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246 | typedef struct etp_worker |
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247 | { |
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248 | /* locked by wrklock */ |
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249 | struct etp_worker *prev, *next; |
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250 | |
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251 | xthread_t tid; |
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252 | |
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253 | /* locked by reslock, reqlock or wrklock */ |
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254 | ETP_REQ *req; /* currently processed request */ |
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255 | |
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256 | ETP_WORKER_COMMON |
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257 | } etp_worker; |
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258 | |
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259 | static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */ |
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260 | |
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261 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
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262 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
101 | |
263 | |
102 | /* worker threads management */ |
264 | /* worker threads management */ |
103 | static mutex_t wrklock = X_MUTEX_INIT; |
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104 | |
265 | |
105 | typedef struct worker { |
266 | static void ecb_cold |
106 | /* locked by wrklock */ |
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107 | struct worker *prev, *next; |
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108 | |
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109 | thread_t tid; |
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110 | |
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111 | /* locked by reslock, reqlock or wrklock */ |
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112 | eio_req *req; /* currently processed request */ |
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113 | void *dbuf; |
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114 | DIR *dirp; |
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115 | } worker; |
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116 | |
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117 | static worker wrk_first = { &wrk_first, &wrk_first, 0 }; |
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118 | |
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119 | static void worker_clear (worker *wrk) |
267 | etp_worker_clear (etp_worker *wrk) |
120 | { |
268 | { |
121 | if (wrk->dirp) |
269 | ETP_WORKER_CLEAR (wrk); |
122 | { |
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123 | closedir (wrk->dirp); |
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124 | wrk->dirp = 0; |
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125 | } |
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126 | |
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127 | if (wrk->dbuf) |
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128 | { |
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129 | free (wrk->dbuf); |
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130 | wrk->dbuf = 0; |
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131 | } |
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132 | } |
270 | } |
133 | |
271 | |
134 | static void worker_free (worker *wrk) |
272 | static void ecb_cold |
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273 | etp_worker_free (etp_worker *wrk) |
135 | { |
274 | { |
136 | wrk->next->prev = wrk->prev; |
275 | wrk->next->prev = wrk->prev; |
137 | wrk->prev->next = wrk->next; |
276 | wrk->prev->next = wrk->next; |
138 | |
277 | |
139 | free (wrk); |
278 | free (wrk); |
140 | } |
279 | } |
141 | |
280 | |
142 | static volatile unsigned int nreqs, nready, npending; |
281 | static unsigned int |
143 | static volatile unsigned int max_idle = 4; |
282 | etp_nreqs (void) |
144 | |
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145 | static mutex_t reslock = X_MUTEX_INIT; |
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146 | static mutex_t reqlock = X_MUTEX_INIT; |
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147 | static cond_t reqwait = X_COND_INIT; |
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148 | |
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149 | unsigned int eio_nreqs (void) |
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150 | { |
283 | { |
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284 | int retval; |
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285 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
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286 | retval = nreqs; |
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287 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
151 | return nreqs; |
288 | return retval; |
152 | } |
289 | } |
153 | |
290 | |
154 | unsigned int eio_nready (void) |
291 | static unsigned int |
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292 | etp_nready (void) |
155 | { |
293 | { |
156 | unsigned int retval; |
294 | unsigned int retval; |
157 | |
295 | |
158 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
296 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
159 | retval = nready; |
297 | retval = nready; |
160 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
298 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
161 | |
299 | |
162 | return retval; |
300 | return retval; |
163 | } |
301 | } |
164 | |
302 | |
165 | unsigned int eio_npending (void) |
303 | static unsigned int |
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304 | etp_npending (void) |
166 | { |
305 | { |
167 | unsigned int retval; |
306 | unsigned int retval; |
168 | |
307 | |
169 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
308 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
170 | retval = npending; |
309 | retval = npending; |
171 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
310 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
172 | |
311 | |
173 | return retval; |
312 | return retval; |
174 | } |
313 | } |
175 | |
314 | |
176 | unsigned int eio_nthreads (void) |
315 | static unsigned int |
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316 | etp_nthreads (void) |
177 | { |
317 | { |
178 | unsigned int retval; |
318 | unsigned int retval; |
179 | |
319 | |
180 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
320 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
181 | retval = started; |
321 | retval = started; |
… | |
… | |
188 | * a somewhat faster data structure might be nice, but |
328 | * a somewhat faster data structure might be nice, but |
189 | * with 8 priorities this actually needs <20 insns |
329 | * with 8 priorities this actually needs <20 insns |
190 | * per shift, the most expensive operation. |
330 | * per shift, the most expensive operation. |
191 | */ |
331 | */ |
192 | typedef struct { |
332 | typedef struct { |
193 | eio_req *qs[EIO_NUM_PRI], *qe[EIO_NUM_PRI]; /* qstart, qend */ |
333 | ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */ |
194 | int size; |
334 | int size; |
195 | } reqq; |
335 | } etp_reqq; |
196 | |
336 | |
197 | static reqq req_queue; |
337 | static etp_reqq req_queue; |
198 | static reqq res_queue; |
338 | static etp_reqq res_queue; |
199 | |
339 | |
200 | static int reqq_push (reqq *q, eio_req *req) |
340 | static int ecb_noinline |
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341 | reqq_push (etp_reqq *q, ETP_REQ *req) |
201 | { |
342 | { |
202 | int pri = req->pri; |
343 | int pri = req->pri; |
203 | req->next = 0; |
344 | req->next = 0; |
204 | |
345 | |
205 | if (q->qe[pri]) |
346 | if (q->qe[pri]) |
… | |
… | |
211 | q->qe[pri] = q->qs[pri] = req; |
352 | q->qe[pri] = q->qs[pri] = req; |
212 | |
353 | |
213 | return q->size++; |
354 | return q->size++; |
214 | } |
355 | } |
215 | |
356 | |
216 | static eio_req *reqq_shift (reqq *q) |
357 | static ETP_REQ * ecb_noinline |
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358 | reqq_shift (etp_reqq *q) |
217 | { |
359 | { |
218 | int pri; |
360 | int pri; |
219 | |
361 | |
220 | if (!q->size) |
362 | if (!q->size) |
221 | return 0; |
363 | return 0; |
222 | |
364 | |
223 | --q->size; |
365 | --q->size; |
224 | |
366 | |
225 | for (pri = EIO_NUM_PRI; pri--; ) |
367 | for (pri = ETP_NUM_PRI; pri--; ) |
226 | { |
368 | { |
227 | eio_req *req = q->qs[pri]; |
369 | eio_req *req = q->qs[pri]; |
228 | |
370 | |
229 | if (req) |
371 | if (req) |
230 | { |
372 | { |
… | |
… | |
236 | } |
378 | } |
237 | |
379 | |
238 | abort (); |
380 | abort (); |
239 | } |
381 | } |
240 | |
382 | |
241 | static void grp_try_feed (eio_req *grp) |
383 | static void ecb_cold |
|
|
384 | etp_thread_init (void) |
242 | { |
385 | { |
243 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
386 | X_MUTEX_CREATE (wrklock); |
|
|
387 | X_MUTEX_CREATE (reslock); |
|
|
388 | X_MUTEX_CREATE (reqlock); |
|
|
389 | X_COND_CREATE (reqwait); |
|
|
390 | } |
|
|
391 | |
|
|
392 | static void ecb_cold |
|
|
393 | etp_atfork_prepare (void) |
|
|
394 | { |
|
|
395 | X_LOCK (wrklock); |
|
|
396 | X_LOCK (reqlock); |
|
|
397 | X_LOCK (reslock); |
|
|
398 | #if !HAVE_PREADWRITE |
|
|
399 | X_LOCK (preadwritelock); |
|
|
400 | #endif |
|
|
401 | } |
|
|
402 | |
|
|
403 | static void ecb_cold |
|
|
404 | etp_atfork_parent (void) |
|
|
405 | { |
|
|
406 | #if !HAVE_PREADWRITE |
|
|
407 | X_UNLOCK (preadwritelock); |
|
|
408 | #endif |
|
|
409 | X_UNLOCK (reslock); |
|
|
410 | X_UNLOCK (reqlock); |
|
|
411 | X_UNLOCK (wrklock); |
|
|
412 | } |
|
|
413 | |
|
|
414 | static void ecb_cold |
|
|
415 | etp_atfork_child (void) |
|
|
416 | { |
|
|
417 | ETP_REQ *prv; |
|
|
418 | |
|
|
419 | while ((prv = reqq_shift (&req_queue))) |
|
|
420 | ETP_DESTROY (prv); |
|
|
421 | |
|
|
422 | while ((prv = reqq_shift (&res_queue))) |
|
|
423 | ETP_DESTROY (prv); |
|
|
424 | |
|
|
425 | while (wrk_first.next != &wrk_first) |
244 | { |
426 | { |
245 | int old_len = grp->size; |
427 | etp_worker *wrk = wrk_first.next; |
246 | |
428 | |
247 | EIO_FEED (grp); |
429 | if (wrk->req) |
|
|
430 | ETP_DESTROY (wrk->req); |
248 | |
431 | |
249 | /* stop if no progress has been made */ |
432 | etp_worker_clear (wrk); |
250 | if (old_len == grp->size) |
433 | etp_worker_free (wrk); |
251 | { |
|
|
252 | grp->feed = 0; |
|
|
253 | break; |
|
|
254 | } |
|
|
255 | } |
434 | } |
256 | } |
|
|
257 | |
435 | |
258 | static int eio_finish (eio_req *req); |
436 | started = 0; |
|
|
437 | idle = 0; |
|
|
438 | nreqs = 0; |
|
|
439 | nready = 0; |
|
|
440 | npending = 0; |
259 | |
441 | |
260 | static int grp_dec (eio_req *grp) |
442 | etp_thread_init (); |
261 | { |
443 | } |
262 | --grp->size; |
|
|
263 | |
444 | |
264 | /* call feeder, if applicable */ |
445 | static void ecb_cold |
265 | grp_try_feed (grp); |
446 | etp_once_init (void) |
|
|
447 | { |
|
|
448 | etp_thread_init (); |
|
|
449 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
|
|
450 | } |
266 | |
451 | |
267 | /* finish, if done */ |
452 | static int ecb_cold |
268 | if (!grp->size && grp->int1) |
453 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
269 | return eio_finish (grp); |
454 | { |
270 | else |
455 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
|
|
456 | |
|
|
457 | pthread_once (&doinit, etp_once_init); |
|
|
458 | |
|
|
459 | want_poll_cb = want_poll; |
|
|
460 | done_poll_cb = done_poll; |
|
|
461 | |
271 | return 0; |
462 | return 0; |
272 | } |
463 | } |
273 | |
464 | |
274 | void eio_destroy (eio_req *req) |
|
|
275 | { |
|
|
276 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
|
|
277 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
|
|
278 | |
|
|
279 | EIO_DESTROY (req); |
|
|
280 | } |
|
|
281 | |
|
|
282 | static int eio_finish (eio_req *req) |
|
|
283 | { |
|
|
284 | int res = EIO_FINISH (req); |
|
|
285 | |
|
|
286 | if (req->grp) |
|
|
287 | { |
|
|
288 | int res2; |
|
|
289 | eio_req *grp = req->grp; |
|
|
290 | |
|
|
291 | /* unlink request */ |
|
|
292 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
|
|
293 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
|
|
294 | |
|
|
295 | if (grp->grp_first == req) |
|
|
296 | grp->grp_first = req->grp_next; |
|
|
297 | |
|
|
298 | res2 = grp_dec (grp); |
|
|
299 | |
|
|
300 | if (!res && res2) |
|
|
301 | res = res2; |
|
|
302 | } |
|
|
303 | |
|
|
304 | eio_destroy (req); |
|
|
305 | |
|
|
306 | return res; |
|
|
307 | } |
|
|
308 | |
|
|
309 | void eio_grp_cancel (eio_req *grp) |
|
|
310 | { |
|
|
311 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
|
|
312 | eio_cancel (grp); |
|
|
313 | } |
|
|
314 | |
|
|
315 | void eio_cancel (eio_req *req) |
|
|
316 | { |
|
|
317 | X_LOCK (wrklock); |
|
|
318 | req->flags |= EIO_FLAG_CANCELLED; |
|
|
319 | X_UNLOCK (wrklock); |
|
|
320 | |
|
|
321 | eio_grp_cancel (req); |
|
|
322 | } |
|
|
323 | |
|
|
324 | X_THREAD_PROC (eio_proc); |
465 | X_THREAD_PROC (etp_proc); |
325 | |
466 | |
326 | static void start_thread (void) |
467 | static void ecb_cold |
|
|
468 | etp_start_thread (void) |
327 | { |
469 | { |
328 | worker *wrk = calloc (1, sizeof (worker)); |
470 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
329 | |
471 | |
330 | /*TODO*/ |
472 | /*TODO*/ |
331 | assert (("unable to allocate worker thread data", !wrk)); |
473 | assert (("unable to allocate worker thread data", wrk)); |
332 | |
474 | |
333 | X_LOCK (wrklock); |
475 | X_LOCK (wrklock); |
334 | |
476 | |
335 | if (thread_create (&wrk->tid, eio_proc, (void *)wrk)) |
477 | if (thread_create (&wrk->tid, etp_proc, (void *)wrk)) |
336 | { |
478 | { |
337 | wrk->prev = &wrk_first; |
479 | wrk->prev = &wrk_first; |
338 | wrk->next = wrk_first.next; |
480 | wrk->next = wrk_first.next; |
339 | wrk_first.next->prev = wrk; |
481 | wrk_first.next->prev = wrk; |
340 | wrk_first.next = wrk; |
482 | wrk_first.next = wrk; |
… | |
… | |
344 | free (wrk); |
486 | free (wrk); |
345 | |
487 | |
346 | X_UNLOCK (wrklock); |
488 | X_UNLOCK (wrklock); |
347 | } |
489 | } |
348 | |
490 | |
|
|
491 | static void |
349 | static void maybe_start_thread (void) |
492 | etp_maybe_start_thread (void) |
350 | { |
493 | { |
351 | if (eio_nthreads () >= wanted) |
494 | if (ecb_expect_true (etp_nthreads () >= wanted)) |
352 | return; |
495 | return; |
353 | |
496 | |
354 | /* todo: maybe use idle here, but might be less exact */ |
497 | /* todo: maybe use idle here, but might be less exact */ |
355 | if (0 <= (int)eio_nthreads () + (int)eio_npending () - (int)eio_nreqs ()) |
498 | if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
356 | return; |
499 | return; |
357 | |
500 | |
358 | start_thread (); |
501 | etp_start_thread (); |
359 | } |
502 | } |
360 | |
503 | |
361 | void eio_submit (eio_req *req) |
504 | static void ecb_cold |
362 | { |
505 | etp_end_thread (void) |
363 | ++nreqs; |
|
|
364 | |
|
|
365 | X_LOCK (reqlock); |
|
|
366 | ++nready; |
|
|
367 | reqq_push (&req_queue, req); |
|
|
368 | X_COND_SIGNAL (reqwait); |
|
|
369 | X_UNLOCK (reqlock); |
|
|
370 | |
|
|
371 | maybe_start_thread (); |
|
|
372 | } |
|
|
373 | |
|
|
374 | static void end_thread (void) |
|
|
375 | { |
506 | { |
376 | eio_req *req = calloc (1, sizeof (eio_req)); |
507 | eio_req *req = calloc (1, sizeof (eio_req)); |
377 | |
508 | |
378 | req->type = EIO_QUIT; |
509 | req->type = -1; |
379 | req->pri = EIO_PRI_MAX + EIO_PRI_BIAS; |
510 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
380 | |
511 | |
381 | X_LOCK (reqlock); |
512 | X_LOCK (reqlock); |
382 | reqq_push (&req_queue, req); |
513 | reqq_push (&req_queue, req); |
383 | X_COND_SIGNAL (reqwait); |
514 | X_COND_SIGNAL (reqwait); |
384 | X_UNLOCK (reqlock); |
515 | X_UNLOCK (reqlock); |
… | |
… | |
386 | X_LOCK (wrklock); |
517 | X_LOCK (wrklock); |
387 | --started; |
518 | --started; |
388 | X_UNLOCK (wrklock); |
519 | X_UNLOCK (wrklock); |
389 | } |
520 | } |
390 | |
521 | |
391 | void eio_set_max_poll_time (double nseconds) |
522 | static int |
392 | { |
|
|
393 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
394 | max_poll_time = nseconds; |
|
|
395 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
396 | } |
|
|
397 | |
|
|
398 | void eio_set_max_poll_reqs (unsigned int maxreqs) |
|
|
399 | { |
|
|
400 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
401 | max_poll_reqs = maxreqs; |
|
|
402 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
403 | } |
|
|
404 | |
|
|
405 | void eio_set_max_idle (unsigned int nthreads) |
|
|
406 | { |
|
|
407 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
408 | max_idle = nthreads <= 0 ? 1 : nthreads; |
|
|
409 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
410 | } |
|
|
411 | |
|
|
412 | void eio_set_min_parallel (unsigned int nthreads) |
|
|
413 | { |
|
|
414 | if (wanted < nthreads) |
|
|
415 | wanted = nthreads; |
|
|
416 | } |
|
|
417 | |
|
|
418 | void eio_set_max_parallel (unsigned int nthreads) |
|
|
419 | { |
|
|
420 | if (wanted > nthreads) |
|
|
421 | wanted = nthreads; |
|
|
422 | |
|
|
423 | while (started > wanted) |
|
|
424 | end_thread (); |
|
|
425 | } |
|
|
426 | |
|
|
427 | int eio_poll (void) |
523 | etp_poll (void) |
428 | { |
524 | { |
429 | int maxreqs = max_poll_reqs; |
525 | unsigned int maxreqs; |
|
|
526 | unsigned int maxtime; |
430 | struct timeval tv_start, tv_now; |
527 | struct timeval tv_start, tv_now; |
431 | eio_req *req; |
|
|
432 | |
528 | |
|
|
529 | X_LOCK (reslock); |
|
|
530 | maxreqs = max_poll_reqs; |
|
|
531 | maxtime = max_poll_time; |
|
|
532 | X_UNLOCK (reslock); |
|
|
533 | |
433 | if (max_poll_time) |
534 | if (maxtime) |
434 | gettimeofday (&tv_start, 0); |
535 | gettimeofday (&tv_start, 0); |
435 | |
536 | |
436 | for (;;) |
537 | for (;;) |
437 | { |
538 | { |
|
|
539 | ETP_REQ *req; |
|
|
540 | |
438 | maybe_start_thread (); |
541 | etp_maybe_start_thread (); |
439 | |
542 | |
440 | X_LOCK (reslock); |
543 | X_LOCK (reslock); |
441 | req = reqq_shift (&res_queue); |
544 | req = reqq_shift (&res_queue); |
442 | |
545 | |
443 | if (req) |
546 | if (req) |
… | |
… | |
451 | X_UNLOCK (reslock); |
554 | X_UNLOCK (reslock); |
452 | |
555 | |
453 | if (!req) |
556 | if (!req) |
454 | return 0; |
557 | return 0; |
455 | |
558 | |
|
|
559 | X_LOCK (reqlock); |
456 | --nreqs; |
560 | --nreqs; |
|
|
561 | X_UNLOCK (reqlock); |
457 | |
562 | |
458 | if (req->type == EIO_GROUP && req->size) |
563 | if (ecb_expect_false (req->type == EIO_GROUP && req->size)) |
459 | { |
564 | { |
460 | req->int1 = 1; /* mark request as delayed */ |
565 | req->int1 = 1; /* mark request as delayed */ |
461 | continue; |
566 | continue; |
462 | } |
567 | } |
463 | else |
568 | else |
464 | { |
569 | { |
465 | int res = eio_finish (req); |
570 | int res = ETP_FINISH (req); |
466 | if (res) |
571 | if (ecb_expect_false (res)) |
467 | return res; |
572 | return res; |
468 | } |
573 | } |
469 | |
574 | |
470 | if (maxreqs && !--maxreqs) |
575 | if (ecb_expect_false (maxreqs && !--maxreqs)) |
471 | break; |
576 | break; |
472 | |
577 | |
473 | if (max_poll_time) |
578 | if (maxtime) |
474 | { |
579 | { |
475 | gettimeofday (&tv_now, 0); |
580 | gettimeofday (&tv_now, 0); |
476 | |
581 | |
477 | if (tvdiff (&tv_start, &tv_now) >= max_poll_time) |
582 | if (tvdiff (&tv_start, &tv_now) >= maxtime) |
478 | break; |
583 | break; |
479 | } |
584 | } |
480 | } |
585 | } |
481 | |
586 | |
482 | errno = EAGAIN; |
587 | errno = EAGAIN; |
483 | return -1; |
588 | return -1; |
484 | } |
589 | } |
485 | |
590 | |
|
|
591 | static void |
|
|
592 | etp_cancel (ETP_REQ *req) |
|
|
593 | { |
|
|
594 | req->cancelled = 1; |
|
|
595 | |
|
|
596 | eio_grp_cancel (req); |
|
|
597 | } |
|
|
598 | |
|
|
599 | static void |
|
|
600 | etp_submit (ETP_REQ *req) |
|
|
601 | { |
|
|
602 | req->pri -= ETP_PRI_MIN; |
|
|
603 | |
|
|
604 | if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
|
|
605 | if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
|
|
606 | |
|
|
607 | if (ecb_expect_false (req->type == EIO_GROUP)) |
|
|
608 | { |
|
|
609 | /* I hope this is worth it :/ */ |
|
|
610 | X_LOCK (reqlock); |
|
|
611 | ++nreqs; |
|
|
612 | X_UNLOCK (reqlock); |
|
|
613 | |
|
|
614 | X_LOCK (reslock); |
|
|
615 | |
|
|
616 | ++npending; |
|
|
617 | |
|
|
618 | if (!reqq_push (&res_queue, req) && want_poll_cb) |
|
|
619 | want_poll_cb (); |
|
|
620 | |
|
|
621 | X_UNLOCK (reslock); |
|
|
622 | } |
|
|
623 | else |
|
|
624 | { |
|
|
625 | X_LOCK (reqlock); |
|
|
626 | ++nreqs; |
|
|
627 | ++nready; |
|
|
628 | reqq_push (&req_queue, req); |
|
|
629 | X_COND_SIGNAL (reqwait); |
|
|
630 | X_UNLOCK (reqlock); |
|
|
631 | |
|
|
632 | etp_maybe_start_thread (); |
|
|
633 | } |
|
|
634 | } |
|
|
635 | |
|
|
636 | static void ecb_cold |
|
|
637 | etp_set_max_poll_time (double nseconds) |
|
|
638 | { |
|
|
639 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
|
|
640 | max_poll_time = nseconds * EIO_TICKS; |
|
|
641 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
|
|
642 | } |
|
|
643 | |
|
|
644 | static void ecb_cold |
|
|
645 | etp_set_max_poll_reqs (unsigned int maxreqs) |
|
|
646 | { |
|
|
647 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
|
|
648 | max_poll_reqs = maxreqs; |
|
|
649 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
|
|
650 | } |
|
|
651 | |
|
|
652 | static void ecb_cold |
|
|
653 | etp_set_max_idle (unsigned int nthreads) |
|
|
654 | { |
|
|
655 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
656 | max_idle = nthreads; |
|
|
657 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
658 | } |
|
|
659 | |
|
|
660 | static void ecb_cold |
|
|
661 | etp_set_idle_timeout (unsigned int seconds) |
|
|
662 | { |
|
|
663 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
664 | idle_timeout = seconds; |
|
|
665 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
666 | } |
|
|
667 | |
|
|
668 | static void ecb_cold |
|
|
669 | etp_set_min_parallel (unsigned int nthreads) |
|
|
670 | { |
|
|
671 | if (wanted < nthreads) |
|
|
672 | wanted = nthreads; |
|
|
673 | } |
|
|
674 | |
|
|
675 | static void ecb_cold |
|
|
676 | etp_set_max_parallel (unsigned int nthreads) |
|
|
677 | { |
|
|
678 | if (wanted > nthreads) |
|
|
679 | wanted = nthreads; |
|
|
680 | |
|
|
681 | while (started > wanted) |
|
|
682 | etp_end_thread (); |
|
|
683 | } |
|
|
684 | |
|
|
685 | /*****************************************************************************/ |
|
|
686 | |
|
|
687 | static void |
|
|
688 | grp_try_feed (eio_req *grp) |
|
|
689 | { |
|
|
690 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
|
|
691 | { |
|
|
692 | grp->flags &= ~EIO_FLAG_GROUPADD; |
|
|
693 | |
|
|
694 | EIO_FEED (grp); |
|
|
695 | |
|
|
696 | /* stop if no progress has been made */ |
|
|
697 | if (!(grp->flags & EIO_FLAG_GROUPADD)) |
|
|
698 | { |
|
|
699 | grp->feed = 0; |
|
|
700 | break; |
|
|
701 | } |
|
|
702 | } |
|
|
703 | } |
|
|
704 | |
|
|
705 | static int |
|
|
706 | grp_dec (eio_req *grp) |
|
|
707 | { |
|
|
708 | --grp->size; |
|
|
709 | |
|
|
710 | /* call feeder, if applicable */ |
|
|
711 | grp_try_feed (grp); |
|
|
712 | |
|
|
713 | /* finish, if done */ |
|
|
714 | if (!grp->size && grp->int1) |
|
|
715 | return eio_finish (grp); |
|
|
716 | else |
|
|
717 | return 0; |
|
|
718 | } |
|
|
719 | |
|
|
720 | static void |
|
|
721 | eio_destroy (eio_req *req) |
|
|
722 | { |
|
|
723 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
|
|
724 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
|
|
725 | |
|
|
726 | EIO_DESTROY (req); |
|
|
727 | } |
|
|
728 | |
|
|
729 | static int |
|
|
730 | eio_finish (eio_req *req) |
|
|
731 | { |
|
|
732 | int res = EIO_FINISH (req); |
|
|
733 | |
|
|
734 | if (req->grp) |
|
|
735 | { |
|
|
736 | int res2; |
|
|
737 | eio_req *grp = req->grp; |
|
|
738 | |
|
|
739 | /* unlink request */ |
|
|
740 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
|
|
741 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
|
|
742 | |
|
|
743 | if (grp->grp_first == req) |
|
|
744 | grp->grp_first = req->grp_next; |
|
|
745 | |
|
|
746 | res2 = grp_dec (grp); |
|
|
747 | |
|
|
748 | if (!res) |
|
|
749 | res = res2; |
|
|
750 | } |
|
|
751 | |
|
|
752 | eio_destroy (req); |
|
|
753 | |
|
|
754 | return res; |
|
|
755 | } |
|
|
756 | |
|
|
757 | void |
|
|
758 | eio_grp_cancel (eio_req *grp) |
|
|
759 | { |
|
|
760 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
|
|
761 | eio_cancel (grp); |
|
|
762 | } |
|
|
763 | |
|
|
764 | void |
|
|
765 | eio_cancel (eio_req *req) |
|
|
766 | { |
|
|
767 | etp_cancel (req); |
|
|
768 | } |
|
|
769 | |
|
|
770 | void |
|
|
771 | eio_submit (eio_req *req) |
|
|
772 | { |
|
|
773 | etp_submit (req); |
|
|
774 | } |
|
|
775 | |
|
|
776 | unsigned int |
|
|
777 | eio_nreqs (void) |
|
|
778 | { |
|
|
779 | return etp_nreqs (); |
|
|
780 | } |
|
|
781 | |
|
|
782 | unsigned int |
|
|
783 | eio_nready (void) |
|
|
784 | { |
|
|
785 | return etp_nready (); |
|
|
786 | } |
|
|
787 | |
|
|
788 | unsigned int |
|
|
789 | eio_npending (void) |
|
|
790 | { |
|
|
791 | return etp_npending (); |
|
|
792 | } |
|
|
793 | |
|
|
794 | unsigned int ecb_cold |
|
|
795 | eio_nthreads (void) |
|
|
796 | { |
|
|
797 | return etp_nthreads (); |
|
|
798 | } |
|
|
799 | |
|
|
800 | void ecb_cold |
|
|
801 | eio_set_max_poll_time (double nseconds) |
|
|
802 | { |
|
|
803 | etp_set_max_poll_time (nseconds); |
|
|
804 | } |
|
|
805 | |
|
|
806 | void ecb_cold |
|
|
807 | eio_set_max_poll_reqs (unsigned int maxreqs) |
|
|
808 | { |
|
|
809 | etp_set_max_poll_reqs (maxreqs); |
|
|
810 | } |
|
|
811 | |
|
|
812 | void ecb_cold |
|
|
813 | eio_set_max_idle (unsigned int nthreads) |
|
|
814 | { |
|
|
815 | etp_set_max_idle (nthreads); |
|
|
816 | } |
|
|
817 | |
|
|
818 | void ecb_cold |
|
|
819 | eio_set_idle_timeout (unsigned int seconds) |
|
|
820 | { |
|
|
821 | etp_set_idle_timeout (seconds); |
|
|
822 | } |
|
|
823 | |
|
|
824 | void ecb_cold |
|
|
825 | eio_set_min_parallel (unsigned int nthreads) |
|
|
826 | { |
|
|
827 | etp_set_min_parallel (nthreads); |
|
|
828 | } |
|
|
829 | |
|
|
830 | void ecb_cold |
|
|
831 | eio_set_max_parallel (unsigned int nthreads) |
|
|
832 | { |
|
|
833 | etp_set_max_parallel (nthreads); |
|
|
834 | } |
|
|
835 | |
|
|
836 | int eio_poll (void) |
|
|
837 | { |
|
|
838 | return etp_poll (); |
|
|
839 | } |
|
|
840 | |
486 | /*****************************************************************************/ |
841 | /*****************************************************************************/ |
487 | /* work around various missing functions */ |
842 | /* work around various missing functions */ |
488 | |
843 | |
489 | #if !HAVE_PREADWRITE |
844 | #if !HAVE_PREADWRITE |
|
|
845 | # undef pread |
|
|
846 | # undef pwrite |
490 | # define pread aio_pread |
847 | # define pread eio__pread |
491 | # define pwrite aio_pwrite |
848 | # define pwrite eio__pwrite |
492 | |
849 | |
493 | /* |
850 | static ssize_t |
494 | * make our pread/pwrite safe against themselves, but not against |
851 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
495 | * normal read/write by using a mutex. slows down execution a lot, |
|
|
496 | * but that's your problem, not mine. |
|
|
497 | */ |
|
|
498 | static mutex_t preadwritelock = X_MUTEX_INIT; |
|
|
499 | |
|
|
500 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
|
|
501 | { |
852 | { |
502 | ssize_t res; |
853 | ssize_t res; |
503 | off_t ooffset; |
854 | off_t ooffset; |
504 | |
855 | |
505 | X_LOCK (preadwritelock); |
856 | X_LOCK (preadwritelock); |
… | |
… | |
510 | X_UNLOCK (preadwritelock); |
861 | X_UNLOCK (preadwritelock); |
511 | |
862 | |
512 | return res; |
863 | return res; |
513 | } |
864 | } |
514 | |
865 | |
515 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
866 | static ssize_t |
|
|
867 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
516 | { |
868 | { |
517 | ssize_t res; |
869 | ssize_t res; |
518 | off_t ooffset; |
870 | off_t ooffset; |
519 | |
871 | |
520 | X_LOCK (preadwritelock); |
872 | X_LOCK (preadwritelock); |
521 | ooffset = lseek (fd, 0, SEEK_CUR); |
873 | ooffset = lseek (fd, 0, SEEK_CUR); |
522 | lseek (fd, offset, SEEK_SET); |
874 | lseek (fd, offset, SEEK_SET); |
523 | res = write (fd, buf, count); |
875 | res = write (fd, buf, count); |
524 | lseek (fd, offset, SEEK_SET); |
876 | lseek (fd, ooffset, SEEK_SET); |
525 | X_UNLOCK (preadwritelock); |
877 | X_UNLOCK (preadwritelock); |
526 | |
878 | |
527 | return res; |
879 | return res; |
528 | } |
880 | } |
529 | #endif |
881 | #endif |
530 | |
882 | |
531 | #ifndef HAVE_FUTIMES |
883 | #ifndef HAVE_UTIMES |
532 | |
884 | |
|
|
885 | # undef utimes |
533 | # define utimes(path,times) aio_utimes (path, times) |
886 | # define utimes(path,times) eio__utimes (path, times) |
534 | # define futimes(fd,times) aio_futimes (fd, times) |
|
|
535 | |
887 | |
|
|
888 | static int |
536 | static int aio_utimes (const char *filename, const struct timeval times[2]) |
889 | eio__utimes (const char *filename, const struct timeval times[2]) |
537 | { |
890 | { |
538 | if (times) |
891 | if (times) |
539 | { |
892 | { |
540 | struct utimbuf buf; |
893 | struct utimbuf buf; |
541 | |
894 | |
… | |
… | |
546 | } |
899 | } |
547 | else |
900 | else |
548 | return utime (filename, 0); |
901 | return utime (filename, 0); |
549 | } |
902 | } |
550 | |
903 | |
|
|
904 | #endif |
|
|
905 | |
|
|
906 | #ifndef HAVE_FUTIMES |
|
|
907 | |
|
|
908 | # undef futimes |
|
|
909 | # define futimes(fd,times) eio__futimes (fd, times) |
|
|
910 | |
|
|
911 | static int |
551 | static int aio_futimes (int fd, const struct timeval tv[2]) |
912 | eio__futimes (int fd, const struct timeval tv[2]) |
552 | { |
913 | { |
553 | errno = ENOSYS; |
914 | errno = ENOSYS; |
554 | return -1; |
915 | return -1; |
555 | } |
916 | } |
556 | |
917 | |
557 | #endif |
918 | #endif |
558 | |
919 | |
559 | #if !HAVE_FDATASYNC |
920 | #if !HAVE_FDATASYNC |
|
|
921 | # undef fdatasync |
560 | # define fdatasync fsync |
922 | # define fdatasync(fd) fsync (fd) |
561 | #endif |
923 | #endif |
|
|
924 | |
|
|
925 | /* sync_file_range always needs emulation */ |
|
|
926 | static int |
|
|
927 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
|
|
928 | { |
|
|
929 | #if HAVE_SYNC_FILE_RANGE |
|
|
930 | int res; |
|
|
931 | |
|
|
932 | if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE |
|
|
933 | || EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE |
|
|
934 | || EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER) |
|
|
935 | { |
|
|
936 | flags = 0 |
|
|
937 | | (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0) |
|
|
938 | | (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0) |
|
|
939 | | (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0); |
|
|
940 | } |
|
|
941 | |
|
|
942 | res = sync_file_range (fd, offset, nbytes, flags); |
|
|
943 | |
|
|
944 | if (!res || errno != ENOSYS) |
|
|
945 | return res; |
|
|
946 | #endif |
|
|
947 | |
|
|
948 | /* even though we could play tricks with the flags, it's better to always |
|
|
949 | * call fdatasync, as that matches the expectation of its users best */ |
|
|
950 | return fdatasync (fd); |
|
|
951 | } |
|
|
952 | |
|
|
953 | static int |
|
|
954 | eio__fallocate (int fd, int mode, off_t offset, size_t len) |
|
|
955 | { |
|
|
956 | #if HAVE_FALLOCATE |
|
|
957 | return fallocate (fd, mode, offset, len); |
|
|
958 | #else |
|
|
959 | errno = ENOSYS; |
|
|
960 | return -1; |
|
|
961 | #endif |
|
|
962 | } |
562 | |
963 | |
563 | #if !HAVE_READAHEAD |
964 | #if !HAVE_READAHEAD |
|
|
965 | # undef readahead |
564 | # define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) |
966 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
565 | |
967 | |
|
|
968 | static ssize_t |
566 | static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) |
969 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
567 | { |
970 | { |
568 | size_t todo = count; |
971 | size_t todo = count; |
569 | dBUF; |
972 | dBUF; |
570 | |
973 | |
571 | while (todo > 0) |
974 | while (todo > 0) |
… | |
… | |
581 | return count; |
984 | return count; |
582 | } |
985 | } |
583 | |
986 | |
584 | #endif |
987 | #endif |
585 | |
988 | |
586 | #if !HAVE_READDIR_R |
|
|
587 | # define readdir_r aio_readdir_r |
|
|
588 | |
|
|
589 | static mutex_t readdirlock = X_MUTEX_INIT; |
|
|
590 | |
|
|
591 | static int readdir_r (DIR *dirp, EIO_STRUCT_DIRENT *ent, EIO_STRUCT_DIRENT **res) |
|
|
592 | { |
|
|
593 | EIO_STRUCT_DIRENT *e; |
|
|
594 | int errorno; |
|
|
595 | |
|
|
596 | X_LOCK (readdirlock); |
|
|
597 | |
|
|
598 | e = readdir (dirp); |
|
|
599 | errorno = errno; |
|
|
600 | |
|
|
601 | if (e) |
|
|
602 | { |
|
|
603 | *res = ent; |
|
|
604 | strcpy (ent->d_name, e->d_name); |
|
|
605 | } |
|
|
606 | else |
|
|
607 | *res = 0; |
|
|
608 | |
|
|
609 | X_UNLOCK (readdirlock); |
|
|
610 | |
|
|
611 | errno = errorno; |
|
|
612 | return e ? 0 : -1; |
|
|
613 | } |
|
|
614 | #endif |
|
|
615 | |
|
|
616 | /* sendfile always needs emulation */ |
989 | /* sendfile always needs emulation */ |
|
|
990 | static ssize_t |
617 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) |
991 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
618 | { |
992 | { |
|
|
993 | ssize_t written = 0; |
619 | ssize_t res; |
994 | ssize_t res; |
620 | |
995 | |
621 | if (!count) |
996 | if (!count) |
622 | return 0; |
997 | return 0; |
623 | |
998 | |
|
|
999 | for (;;) |
|
|
1000 | { |
|
|
1001 | #ifdef __APPLE__ |
|
|
1002 | # undef HAVE_SENDFILE /* broken, as everything on os x */ |
|
|
1003 | #endif |
624 | #if HAVE_SENDFILE |
1004 | #if HAVE_SENDFILE |
625 | # if __linux |
1005 | # if __linux |
|
|
1006 | off_t soffset = offset; |
626 | res = sendfile (ofd, ifd, &offset, count); |
1007 | res = sendfile (ofd, ifd, &soffset, count); |
627 | |
1008 | |
628 | # elif __freebsd |
1009 | # elif __FreeBSD__ |
629 | /* |
1010 | /* |
630 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
1011 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
631 | * wasted on making it similar to other I/O functions. |
1012 | * wasted on making it similar to other I/O functions. |
632 | */ |
1013 | */ |
633 | { |
|
|
634 | off_t sbytes; |
1014 | off_t sbytes; |
635 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
1015 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
636 | |
1016 | |
637 | if (res < 0 && sbytes) |
1017 | #if 0 /* according to the manpage, this is correct, but broken behaviour */ |
638 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
1018 | /* freebsd' sendfile will return 0 on success */ |
|
|
1019 | /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ |
|
|
1020 | /* not on e.g. EIO or EPIPE - sounds broken */ |
|
|
1021 | if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) |
639 | res = sbytes; |
1022 | res = sbytes; |
640 | } |
1023 | #endif |
|
|
1024 | |
|
|
1025 | /* according to source inspection, this is correct, and useful behaviour */ |
|
|
1026 | if (sbytes) |
|
|
1027 | res = sbytes; |
|
|
1028 | |
|
|
1029 | # elif defined (__APPLE__) |
|
|
1030 | off_t sbytes = count; |
|
|
1031 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
|
|
1032 | |
|
|
1033 | /* according to the manpage, sbytes is always valid */ |
|
|
1034 | if (sbytes) |
|
|
1035 | res = sbytes; |
641 | |
1036 | |
642 | # elif __hpux |
1037 | # elif __hpux |
643 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
1038 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
644 | |
1039 | |
645 | # elif __solaris |
1040 | # elif __solaris |
646 | { |
|
|
647 | struct sendfilevec vec; |
1041 | struct sendfilevec vec; |
648 | size_t sbytes; |
1042 | size_t sbytes; |
649 | |
1043 | |
650 | vec.sfv_fd = ifd; |
1044 | vec.sfv_fd = ifd; |
651 | vec.sfv_flag = 0; |
1045 | vec.sfv_flag = 0; |
652 | vec.sfv_off = offset; |
1046 | vec.sfv_off = offset; |
653 | vec.sfv_len = count; |
1047 | vec.sfv_len = count; |
654 | |
1048 | |
655 | res = sendfilev (ofd, &vec, 1, &sbytes); |
1049 | res = sendfilev (ofd, &vec, 1, &sbytes); |
656 | |
1050 | |
657 | if (res < 0 && sbytes) |
1051 | if (res < 0 && sbytes) |
658 | res = sbytes; |
1052 | res = sbytes; |
659 | } |
|
|
660 | |
1053 | |
661 | # endif |
1054 | # endif |
|
|
1055 | |
|
|
1056 | #elif defined (_WIN32) |
|
|
1057 | /* does not work, just for documentation of what would need to be done */ |
|
|
1058 | /* actually, cannot be done like this, as TransmitFile changes the file offset, */ |
|
|
1059 | /* libeio guarantees that the file offset does not change, and windows */ |
|
|
1060 | /* has no way to get an independent handle to the same file description */ |
|
|
1061 | HANDLE h = TO_SOCKET (ifd); |
|
|
1062 | SetFilePointer (h, offset, 0, FILE_BEGIN); |
|
|
1063 | res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); |
|
|
1064 | |
662 | #else |
1065 | #else |
663 | res = -1; |
1066 | res = -1; |
664 | errno = ENOSYS; |
1067 | errno = ENOSYS; |
665 | #endif |
1068 | #endif |
666 | |
1069 | |
|
|
1070 | /* we assume sendfile can copy at least 128mb in one go */ |
|
|
1071 | if (res <= 128 * 1024 * 1024) |
|
|
1072 | { |
|
|
1073 | if (res > 0) |
|
|
1074 | written += res; |
|
|
1075 | |
|
|
1076 | if (written) |
|
|
1077 | return written; |
|
|
1078 | |
|
|
1079 | break; |
|
|
1080 | } |
|
|
1081 | else |
|
|
1082 | { |
|
|
1083 | /* if we requested more, then probably the kernel was lazy */ |
|
|
1084 | written += res; |
|
|
1085 | offset += res; |
|
|
1086 | count -= res; |
|
|
1087 | |
|
|
1088 | if (!count) |
|
|
1089 | return written; |
|
|
1090 | } |
|
|
1091 | } |
|
|
1092 | |
667 | if (res < 0 |
1093 | if (res < 0 |
668 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
1094 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
1095 | /* BSDs */ |
|
|
1096 | #ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ |
|
|
1097 | || errno == ENOTSUP |
|
|
1098 | #endif |
|
|
1099 | || errno == EOPNOTSUPP /* BSDs */ |
669 | #if __solaris |
1100 | #if __solaris |
670 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
1101 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
671 | #endif |
1102 | #endif |
672 | ) |
1103 | ) |
673 | ) |
1104 | ) |
… | |
… | |
704 | } |
1135 | } |
705 | |
1136 | |
706 | return res; |
1137 | return res; |
707 | } |
1138 | } |
708 | |
1139 | |
|
|
1140 | #ifdef PAGESIZE |
|
|
1141 | # define eio_pagesize() PAGESIZE |
|
|
1142 | #else |
|
|
1143 | static intptr_t |
|
|
1144 | eio_pagesize (void) |
|
|
1145 | { |
|
|
1146 | static intptr_t page; |
|
|
1147 | |
|
|
1148 | if (!page) |
|
|
1149 | page = sysconf (_SC_PAGESIZE); |
|
|
1150 | |
|
|
1151 | return page; |
|
|
1152 | } |
|
|
1153 | #endif |
|
|
1154 | |
|
|
1155 | static void |
|
|
1156 | eio_page_align (void **addr, size_t *length) |
|
|
1157 | { |
|
|
1158 | intptr_t mask = eio_pagesize () - 1; |
|
|
1159 | |
|
|
1160 | /* round down addr */ |
|
|
1161 | intptr_t adj = mask & (intptr_t)*addr; |
|
|
1162 | |
|
|
1163 | *addr = (void *)((intptr_t)*addr - adj); |
|
|
1164 | *length += adj; |
|
|
1165 | |
|
|
1166 | /* round up length */ |
|
|
1167 | *length = (*length + mask) & ~mask; |
|
|
1168 | } |
|
|
1169 | |
|
|
1170 | #if !_POSIX_MEMLOCK |
|
|
1171 | # define eio__mlockall(a) ((errno = ENOSYS), -1) |
|
|
1172 | #else |
|
|
1173 | |
|
|
1174 | static int |
|
|
1175 | eio__mlockall (int flags) |
|
|
1176 | { |
|
|
1177 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
|
|
1178 | extern int mallopt (int, int); |
|
|
1179 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
|
|
1180 | #endif |
|
|
1181 | |
|
|
1182 | if (EIO_MCL_CURRENT != MCL_CURRENT |
|
|
1183 | || EIO_MCL_FUTURE != MCL_FUTURE) |
|
|
1184 | { |
|
|
1185 | flags = 0 |
|
|
1186 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
|
|
1187 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); |
|
|
1188 | } |
|
|
1189 | |
|
|
1190 | return mlockall (flags); |
|
|
1191 | } |
|
|
1192 | #endif |
|
|
1193 | |
|
|
1194 | #if !_POSIX_MEMLOCK_RANGE |
|
|
1195 | # define eio__mlock(a,b) ((errno = ENOSYS), -1) |
|
|
1196 | #else |
|
|
1197 | |
|
|
1198 | static int |
|
|
1199 | eio__mlock (void *addr, size_t length) |
|
|
1200 | { |
|
|
1201 | eio_page_align (&addr, &length); |
|
|
1202 | |
|
|
1203 | return mlock (addr, length); |
|
|
1204 | } |
|
|
1205 | |
|
|
1206 | #endif |
|
|
1207 | |
|
|
1208 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
1209 | # define eio__msync(a,b,c) ((errno = ENOSYS), -1) |
|
|
1210 | #else |
|
|
1211 | |
|
|
1212 | static int |
|
|
1213 | eio__msync (void *mem, size_t len, int flags) |
|
|
1214 | { |
|
|
1215 | eio_page_align (&mem, &len); |
|
|
1216 | |
|
|
1217 | if (EIO_MS_ASYNC != MS_SYNC |
|
|
1218 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
|
|
1219 | || EIO_MS_SYNC != MS_SYNC) |
|
|
1220 | { |
|
|
1221 | flags = 0 |
|
|
1222 | | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0) |
|
|
1223 | | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0) |
|
|
1224 | | (flags & EIO_MS_SYNC ? MS_SYNC : 0); |
|
|
1225 | } |
|
|
1226 | |
|
|
1227 | return msync (mem, len, flags); |
|
|
1228 | } |
|
|
1229 | |
|
|
1230 | #endif |
|
|
1231 | |
|
|
1232 | static int |
|
|
1233 | eio__mtouch (eio_req *req) |
|
|
1234 | { |
|
|
1235 | void *mem = req->ptr2; |
|
|
1236 | size_t len = req->size; |
|
|
1237 | int flags = req->int1; |
|
|
1238 | |
|
|
1239 | eio_page_align (&mem, &len); |
|
|
1240 | |
|
|
1241 | { |
|
|
1242 | intptr_t addr = (intptr_t)mem; |
|
|
1243 | intptr_t end = addr + len; |
|
|
1244 | intptr_t page = eio_pagesize (); |
|
|
1245 | |
|
|
1246 | if (addr < end) |
|
|
1247 | if (flags & EIO_MT_MODIFY) /* modify */ |
|
|
1248 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1249 | else |
|
|
1250 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1251 | } |
|
|
1252 | |
|
|
1253 | return 0; |
|
|
1254 | } |
|
|
1255 | |
|
|
1256 | /*****************************************************************************/ |
|
|
1257 | /* requests implemented outside eio_execute, because they are so large */ |
|
|
1258 | |
|
|
1259 | static void |
|
|
1260 | eio__realpath (eio_req *req, etp_worker *self) |
|
|
1261 | { |
|
|
1262 | char *rel = req->ptr1; |
|
|
1263 | char *res; |
|
|
1264 | char *tmp1, *tmp2; |
|
|
1265 | #if SYMLOOP_MAX > 32 |
|
|
1266 | int symlinks = SYMLOOP_MAX; |
|
|
1267 | #else |
|
|
1268 | int symlinks = 32; |
|
|
1269 | #endif |
|
|
1270 | |
|
|
1271 | req->result = -1; |
|
|
1272 | |
|
|
1273 | errno = EINVAL; |
|
|
1274 | if (!rel) |
|
|
1275 | return; |
|
|
1276 | |
|
|
1277 | errno = ENOENT; |
|
|
1278 | if (!*rel) |
|
|
1279 | return; |
|
|
1280 | |
|
|
1281 | if (!req->ptr2) |
|
|
1282 | { |
|
|
1283 | X_LOCK (wrklock); |
|
|
1284 | req->flags |= EIO_FLAG_PTR2_FREE; |
|
|
1285 | X_UNLOCK (wrklock); |
|
|
1286 | req->ptr2 = malloc (PATH_MAX * 3); |
|
|
1287 | |
|
|
1288 | errno = ENOMEM; |
|
|
1289 | if (!req->ptr2) |
|
|
1290 | return; |
|
|
1291 | } |
|
|
1292 | |
|
|
1293 | res = req->ptr2; |
|
|
1294 | tmp1 = res + PATH_MAX; |
|
|
1295 | tmp2 = tmp1 + PATH_MAX; |
|
|
1296 | |
|
|
1297 | #if 0 /* disabled, the musl way to do things is just too racy */ |
|
|
1298 | #if __linux && defined(O_NONBLOCK) && defined(O_NOATIME) |
|
|
1299 | /* on linux we may be able to ask the kernel */ |
|
|
1300 | { |
|
|
1301 | int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME); |
|
|
1302 | |
|
|
1303 | if (fd >= 0) |
|
|
1304 | { |
|
|
1305 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
|
|
1306 | req->result = readlink (tmp1, res, PATH_MAX); |
|
|
1307 | close (fd); |
|
|
1308 | |
|
|
1309 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
|
|
1310 | |
|
|
1311 | if (req->result > 0) |
|
|
1312 | goto done; |
|
|
1313 | } |
|
|
1314 | else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) |
|
|
1315 | return; |
|
|
1316 | } |
|
|
1317 | #endif |
|
|
1318 | #endif |
|
|
1319 | |
|
|
1320 | if (*rel != '/') |
|
|
1321 | { |
|
|
1322 | if (!getcwd (res, PATH_MAX)) |
|
|
1323 | return; |
|
|
1324 | |
|
|
1325 | if (res [1]) /* only use if not / */ |
|
|
1326 | res += strlen (res); |
|
|
1327 | } |
|
|
1328 | |
|
|
1329 | while (*rel) |
|
|
1330 | { |
|
|
1331 | ssize_t len, linklen; |
|
|
1332 | char *beg = rel; |
|
|
1333 | |
|
|
1334 | while (*rel && *rel != '/') |
|
|
1335 | ++rel; |
|
|
1336 | |
|
|
1337 | len = rel - beg; |
|
|
1338 | |
|
|
1339 | if (!len) /* skip slashes */ |
|
|
1340 | { |
|
|
1341 | ++rel; |
|
|
1342 | continue; |
|
|
1343 | } |
|
|
1344 | |
|
|
1345 | if (beg [0] == '.') |
|
|
1346 | { |
|
|
1347 | if (len == 1) |
|
|
1348 | continue; /* . - nop */ |
|
|
1349 | |
|
|
1350 | if (beg [1] == '.' && len == 2) |
|
|
1351 | { |
|
|
1352 | /* .. - back up one component, if possible */ |
|
|
1353 | |
|
|
1354 | while (res != req->ptr2) |
|
|
1355 | if (*--res == '/') |
|
|
1356 | break; |
|
|
1357 | |
|
|
1358 | continue; |
|
|
1359 | } |
|
|
1360 | } |
|
|
1361 | |
|
|
1362 | errno = ENAMETOOLONG; |
|
|
1363 | if (res + 1 + len + 1 >= tmp1) |
|
|
1364 | return; |
|
|
1365 | |
|
|
1366 | /* copy one component */ |
|
|
1367 | *res = '/'; |
|
|
1368 | memcpy (res + 1, beg, len); |
|
|
1369 | |
|
|
1370 | /* zero-terminate, for readlink */ |
|
|
1371 | res [len + 1] = 0; |
|
|
1372 | |
|
|
1373 | /* now check if it's a symlink */ |
|
|
1374 | linklen = readlink (req->ptr2, tmp1, PATH_MAX); |
|
|
1375 | |
|
|
1376 | if (linklen < 0) |
|
|
1377 | { |
|
|
1378 | if (errno != EINVAL) |
|
|
1379 | return; |
|
|
1380 | |
|
|
1381 | /* it's a normal directory. hopefully */ |
|
|
1382 | res += len + 1; |
|
|
1383 | } |
|
|
1384 | else |
|
|
1385 | { |
|
|
1386 | /* yay, it was a symlink - build new path in tmp2 */ |
|
|
1387 | int rellen = strlen (rel); |
|
|
1388 | |
|
|
1389 | errno = ENAMETOOLONG; |
|
|
1390 | if (linklen + 1 + rellen >= PATH_MAX) |
|
|
1391 | return; |
|
|
1392 | |
|
|
1393 | errno = ELOOP; |
|
|
1394 | if (!--symlinks) |
|
|
1395 | return; |
|
|
1396 | |
|
|
1397 | if (*tmp1 == '/') |
|
|
1398 | res = req->ptr2; /* symlink resolves to an absolute path */ |
|
|
1399 | |
|
|
1400 | /* we need to be careful, as rel might point into tmp2 already */ |
|
|
1401 | memmove (tmp2 + linklen + 1, rel, rellen + 1); |
|
|
1402 | tmp2 [linklen] = '/'; |
|
|
1403 | memcpy (tmp2, tmp1, linklen); |
|
|
1404 | |
|
|
1405 | rel = tmp2; |
|
|
1406 | } |
|
|
1407 | } |
|
|
1408 | |
|
|
1409 | /* special case for the lone root path */ |
|
|
1410 | if (res == req->ptr2) |
|
|
1411 | *res++ = '/'; |
|
|
1412 | |
|
|
1413 | req->result = res - (char *)req->ptr2; |
|
|
1414 | |
|
|
1415 | done: |
|
|
1416 | req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */ |
|
|
1417 | } |
|
|
1418 | |
|
|
1419 | static signed char |
|
|
1420 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
|
|
1421 | { |
|
|
1422 | return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ |
|
|
1423 | : a->inode < b->inode ? -1 |
|
|
1424 | : a->inode > b->inode ? 1 |
|
|
1425 | : 0; |
|
|
1426 | } |
|
|
1427 | |
|
|
1428 | #define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 |
|
|
1429 | |
|
|
1430 | #define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
|
|
1431 | #define EIO_SORT_FAST 60 /* when to only use insertion sort */ |
|
|
1432 | |
|
|
1433 | static void |
|
|
1434 | eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits) |
|
|
1435 | { |
|
|
1436 | unsigned char bits [9 + sizeof (ino_t) * 8]; |
|
|
1437 | unsigned char *bit = bits; |
|
|
1438 | |
|
|
1439 | assert (CHAR_BIT == 8); |
|
|
1440 | assert (sizeof (eio_dirent) * 8 < 256); |
|
|
1441 | assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */ |
|
|
1442 | assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */ |
|
|
1443 | |
|
|
1444 | if (size <= EIO_SORT_FAST) |
|
|
1445 | return; |
|
|
1446 | |
|
|
1447 | /* first prepare an array of bits to test in our radix sort */ |
|
|
1448 | /* try to take endianness into account, as well as differences in ino_t sizes */ |
|
|
1449 | /* inode_bits must contain all inodes ORed together */ |
|
|
1450 | /* which is used to skip bits that are 0 everywhere, which is very common */ |
|
|
1451 | { |
|
|
1452 | ino_t endianness; |
|
|
1453 | int i, j; |
|
|
1454 | |
|
|
1455 | /* we store the byte offset of byte n into byte n of "endianness" */ |
|
|
1456 | for (i = 0; i < sizeof (ino_t); ++i) |
|
|
1457 | ((unsigned char *)&endianness)[i] = i; |
|
|
1458 | |
|
|
1459 | *bit++ = 0; |
|
|
1460 | |
|
|
1461 | for (i = 0; i < sizeof (ino_t); ++i) |
|
|
1462 | { |
|
|
1463 | /* shifting off the byte offsets out of "endianness" */ |
|
|
1464 | int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8; |
|
|
1465 | endianness >>= 8; |
|
|
1466 | |
|
|
1467 | for (j = 0; j < 8; ++j) |
|
|
1468 | if (inode_bits & (((ino_t)1) << (i * 8 + j))) |
|
|
1469 | *bit++ = offs + j; |
|
|
1470 | } |
|
|
1471 | |
|
|
1472 | for (j = 0; j < 8; ++j) |
|
|
1473 | if (score_bits & (1 << j)) |
|
|
1474 | *bit++ = offsetof (eio_dirent, score) * 8 + j; |
|
|
1475 | } |
|
|
1476 | |
|
|
1477 | /* now actually do the sorting (a variant of MSD radix sort) */ |
|
|
1478 | { |
|
|
1479 | eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base; |
|
|
1480 | eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end; |
|
|
1481 | unsigned char *bit_stk [9 + sizeof (ino_t) * 8]; |
|
|
1482 | int stk_idx = 0; |
|
|
1483 | |
|
|
1484 | base_stk [stk_idx] = dents; |
|
|
1485 | end_stk [stk_idx] = dents + size; |
|
|
1486 | bit_stk [stk_idx] = bit - 1; |
|
|
1487 | |
|
|
1488 | do |
|
|
1489 | { |
|
|
1490 | base = base_stk [stk_idx]; |
|
|
1491 | end = end_stk [stk_idx]; |
|
|
1492 | bit = bit_stk [stk_idx]; |
|
|
1493 | |
|
|
1494 | for (;;) |
|
|
1495 | { |
|
|
1496 | unsigned char O = *bit >> 3; |
|
|
1497 | unsigned char M = 1 << (*bit & 7); |
|
|
1498 | |
|
|
1499 | eio_dirent *a = base; |
|
|
1500 | eio_dirent *b = end; |
|
|
1501 | |
|
|
1502 | if (b - a < EIO_SORT_CUTOFF) |
|
|
1503 | break; |
|
|
1504 | |
|
|
1505 | /* now bit-partition the array on the bit */ |
|
|
1506 | /* this ugly asymmetric loop seems to perform much better than typical */ |
|
|
1507 | /* partition algos found in the literature */ |
|
|
1508 | do |
|
|
1509 | if (!(((unsigned char *)a)[O] & M)) |
|
|
1510 | ++a; |
|
|
1511 | else if (!(((unsigned char *)--b)[O] & M)) |
|
|
1512 | { |
|
|
1513 | eio_dirent tmp = *a; *a = *b; *b = tmp; |
|
|
1514 | ++a; |
|
|
1515 | } |
|
|
1516 | while (b > a); |
|
|
1517 | |
|
|
1518 | /* next bit, or stop, if no bits left in this path */ |
|
|
1519 | if (!*--bit) |
|
|
1520 | break; |
|
|
1521 | |
|
|
1522 | base_stk [stk_idx] = a; |
|
|
1523 | end_stk [stk_idx] = end; |
|
|
1524 | bit_stk [stk_idx] = bit; |
|
|
1525 | ++stk_idx; |
|
|
1526 | |
|
|
1527 | end = a; |
|
|
1528 | } |
|
|
1529 | } |
|
|
1530 | while (stk_idx--); |
|
|
1531 | } |
|
|
1532 | } |
|
|
1533 | |
|
|
1534 | static void |
|
|
1535 | eio_dent_insertion_sort (eio_dirent *dents, int size) |
|
|
1536 | { |
|
|
1537 | /* first move the smallest element to the front, to act as a sentinel */ |
|
|
1538 | { |
|
|
1539 | int i; |
|
|
1540 | eio_dirent *min = dents; |
|
|
1541 | |
|
|
1542 | /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */ |
|
|
1543 | for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; ) |
|
|
1544 | if (EIO_DENT_CMP (dents [i], <, *min)) |
|
|
1545 | min = &dents [i]; |
|
|
1546 | |
|
|
1547 | /* swap elements 0 and j (minimum) */ |
|
|
1548 | { |
|
|
1549 | eio_dirent tmp = *dents; *dents = *min; *min = tmp; |
|
|
1550 | } |
|
|
1551 | } |
|
|
1552 | |
|
|
1553 | /* then do standard insertion sort, assuming that all elements are >= dents [0] */ |
|
|
1554 | { |
|
|
1555 | eio_dirent *i, *j; |
|
|
1556 | |
|
|
1557 | for (i = dents + 1; i < dents + size; ++i) |
|
|
1558 | { |
|
|
1559 | eio_dirent value = *i; |
|
|
1560 | |
|
|
1561 | for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j) |
|
|
1562 | j [1] = j [0]; |
|
|
1563 | |
|
|
1564 | j [1] = value; |
|
|
1565 | } |
|
|
1566 | } |
|
|
1567 | } |
|
|
1568 | |
|
|
1569 | static void |
|
|
1570 | eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits) |
|
|
1571 | { |
|
|
1572 | if (size <= 1) |
|
|
1573 | return; /* our insertion sort relies on size > 0 */ |
|
|
1574 | |
|
|
1575 | /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */ |
|
|
1576 | /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */ |
|
|
1577 | eio_dent_radix_sort (dents, size, score_bits, inode_bits); |
|
|
1578 | |
|
|
1579 | /* use an insertion sort at the end, or for small arrays, */ |
|
|
1580 | /* as insertion sort is more efficient for small partitions */ |
|
|
1581 | eio_dent_insertion_sort (dents, size); |
|
|
1582 | } |
|
|
1583 | |
709 | /* read a full directory */ |
1584 | /* read a full directory */ |
|
|
1585 | static void |
710 | static void scandir_ (eio_req *req, worker *self) |
1586 | eio__scandir (eio_req *req, etp_worker *self) |
711 | { |
1587 | { |
712 | DIR *dirp; |
1588 | DIR *dirp; |
713 | union |
|
|
714 | { |
|
|
715 | EIO_STRUCT_DIRENT d; |
|
|
716 | char b [offsetof (EIO_STRUCT_DIRENT, d_name) + NAME_MAX + 1]; |
|
|
717 | } *u; |
|
|
718 | EIO_STRUCT_DIRENT *entp; |
1589 | EIO_STRUCT_DIRENT *entp; |
719 | char *name, *names; |
1590 | char *name, *names; |
720 | int memlen = 4096; |
1591 | int namesalloc = 4096; |
721 | int memofs = 0; |
1592 | int namesoffs = 0; |
|
|
1593 | int flags = req->int1; |
|
|
1594 | eio_dirent *dents = 0; |
|
|
1595 | int dentalloc = 128; |
722 | int res = 0; |
1596 | int dentoffs = 0; |
|
|
1597 | ino_t inode_bits = 0; |
|
|
1598 | |
|
|
1599 | req->result = -1; |
|
|
1600 | |
|
|
1601 | if (!(flags & EIO_READDIR_DENTS)) |
|
|
1602 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
723 | |
1603 | |
724 | X_LOCK (wrklock); |
1604 | X_LOCK (wrklock); |
|
|
1605 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
725 | self->dirp = dirp = opendir (req->ptr1); |
1606 | self->dirp = dirp = opendir (req->ptr1); |
726 | self->dbuf = u = malloc (sizeof (*u)); |
1607 | |
727 | req->flags |= EIO_FLAG_PTR2_FREE; |
1608 | if (req->flags & EIO_FLAG_PTR1_FREE) |
|
|
1609 | free (req->ptr1); |
|
|
1610 | |
|
|
1611 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
|
|
1612 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
728 | req->ptr2 = names = malloc (memlen); |
1613 | req->ptr2 = names = malloc (namesalloc); |
729 | X_UNLOCK (wrklock); |
1614 | X_UNLOCK (wrklock); |
730 | |
1615 | |
731 | if (dirp && u && names) |
1616 | if (dirp && names && (!flags || dents)) |
732 | for (;;) |
1617 | for (;;) |
733 | { |
1618 | { |
734 | errno = 0; |
1619 | errno = 0; |
735 | readdir_r (dirp, &u->d, &entp); |
1620 | entp = readdir (dirp); |
736 | |
1621 | |
737 | if (!entp) |
1622 | if (!entp) |
|
|
1623 | { |
|
|
1624 | if (errno) |
|
|
1625 | break; |
|
|
1626 | |
|
|
1627 | /* sort etc. */ |
|
|
1628 | req->int1 = flags; |
|
|
1629 | req->result = dentoffs; |
|
|
1630 | |
|
|
1631 | if (flags & EIO_READDIR_STAT_ORDER) |
|
|
1632 | eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits); |
|
|
1633 | else if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1634 | if (flags & EIO_READDIR_FOUND_UNKNOWN) |
|
|
1635 | eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
|
|
1636 | else |
|
|
1637 | { |
|
|
1638 | /* in this case, all is known, and we just put dirs first and sort them */ |
|
|
1639 | eio_dirent *oth = dents + dentoffs; |
|
|
1640 | eio_dirent *dir = dents; |
|
|
1641 | |
|
|
1642 | /* now partition dirs to the front, and non-dirs to the back */ |
|
|
1643 | /* by walking from both sides and swapping if necessary */ |
|
|
1644 | while (oth > dir) |
|
|
1645 | { |
|
|
1646 | if (dir->type == EIO_DT_DIR) |
|
|
1647 | ++dir; |
|
|
1648 | else if ((--oth)->type == EIO_DT_DIR) |
|
|
1649 | { |
|
|
1650 | eio_dirent tmp = *dir; *dir = *oth; *oth = tmp; |
|
|
1651 | |
|
|
1652 | ++dir; |
|
|
1653 | } |
|
|
1654 | } |
|
|
1655 | |
|
|
1656 | /* now sort the dirs only (dirs all have the same score) */ |
|
|
1657 | eio_dent_sort (dents, dir - dents, 0, inode_bits); |
|
|
1658 | } |
|
|
1659 | |
738 | break; |
1660 | break; |
|
|
1661 | } |
739 | |
1662 | |
|
|
1663 | /* now add the entry to our list(s) */ |
740 | name = entp->d_name; |
1664 | name = entp->d_name; |
741 | |
1665 | |
|
|
1666 | /* skip . and .. entries */ |
742 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1667 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
743 | { |
1668 | { |
744 | int len = strlen (name) + 1; |
1669 | int len = D_NAMLEN (entp) + 1; |
745 | |
1670 | |
746 | res++; |
1671 | while (ecb_expect_false (namesoffs + len > namesalloc)) |
747 | |
|
|
748 | while (memofs + len > memlen) |
|
|
749 | { |
1672 | { |
750 | memlen *= 2; |
1673 | namesalloc *= 2; |
751 | X_LOCK (wrklock); |
1674 | X_LOCK (wrklock); |
752 | req->ptr2 = names = realloc (names, memlen); |
1675 | req->ptr2 = names = realloc (names, namesalloc); |
753 | X_UNLOCK (wrklock); |
1676 | X_UNLOCK (wrklock); |
754 | |
1677 | |
755 | if (!names) |
1678 | if (!names) |
756 | break; |
1679 | break; |
757 | } |
1680 | } |
758 | |
1681 | |
759 | memcpy (names + memofs, name, len); |
1682 | memcpy (names + namesoffs, name, len); |
|
|
1683 | |
|
|
1684 | if (dents) |
|
|
1685 | { |
|
|
1686 | struct eio_dirent *ent; |
|
|
1687 | |
|
|
1688 | if (ecb_expect_false (dentoffs == dentalloc)) |
|
|
1689 | { |
|
|
1690 | dentalloc *= 2; |
|
|
1691 | X_LOCK (wrklock); |
|
|
1692 | req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
|
|
1693 | X_UNLOCK (wrklock); |
|
|
1694 | |
|
|
1695 | if (!dents) |
|
|
1696 | break; |
|
|
1697 | } |
|
|
1698 | |
|
|
1699 | ent = dents + dentoffs; |
|
|
1700 | |
|
|
1701 | ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */ |
|
|
1702 | ent->namelen = len - 1; |
|
|
1703 | ent->inode = D_INO (entp); |
|
|
1704 | |
|
|
1705 | inode_bits |= ent->inode; |
|
|
1706 | |
|
|
1707 | switch (D_TYPE (entp)) |
|
|
1708 | { |
|
|
1709 | default: |
|
|
1710 | ent->type = EIO_DT_UNKNOWN; |
|
|
1711 | flags |= EIO_READDIR_FOUND_UNKNOWN; |
|
|
1712 | break; |
|
|
1713 | |
|
|
1714 | #ifdef DT_FIFO |
|
|
1715 | case DT_FIFO: ent->type = EIO_DT_FIFO; break; |
|
|
1716 | #endif |
|
|
1717 | #ifdef DT_CHR |
|
|
1718 | case DT_CHR: ent->type = EIO_DT_CHR; break; |
|
|
1719 | #endif |
|
|
1720 | #ifdef DT_MPC |
|
|
1721 | case DT_MPC: ent->type = EIO_DT_MPC; break; |
|
|
1722 | #endif |
|
|
1723 | #ifdef DT_DIR |
|
|
1724 | case DT_DIR: ent->type = EIO_DT_DIR; break; |
|
|
1725 | #endif |
|
|
1726 | #ifdef DT_NAM |
|
|
1727 | case DT_NAM: ent->type = EIO_DT_NAM; break; |
|
|
1728 | #endif |
|
|
1729 | #ifdef DT_BLK |
|
|
1730 | case DT_BLK: ent->type = EIO_DT_BLK; break; |
|
|
1731 | #endif |
|
|
1732 | #ifdef DT_MPB |
|
|
1733 | case DT_MPB: ent->type = EIO_DT_MPB; break; |
|
|
1734 | #endif |
|
|
1735 | #ifdef DT_REG |
|
|
1736 | case DT_REG: ent->type = EIO_DT_REG; break; |
|
|
1737 | #endif |
|
|
1738 | #ifdef DT_NWK |
|
|
1739 | case DT_NWK: ent->type = EIO_DT_NWK; break; |
|
|
1740 | #endif |
|
|
1741 | #ifdef DT_CMP |
|
|
1742 | case DT_CMP: ent->type = EIO_DT_CMP; break; |
|
|
1743 | #endif |
|
|
1744 | #ifdef DT_LNK |
|
|
1745 | case DT_LNK: ent->type = EIO_DT_LNK; break; |
|
|
1746 | #endif |
|
|
1747 | #ifdef DT_SOCK |
|
|
1748 | case DT_SOCK: ent->type = EIO_DT_SOCK; break; |
|
|
1749 | #endif |
|
|
1750 | #ifdef DT_DOOR |
|
|
1751 | case DT_DOOR: ent->type = EIO_DT_DOOR; break; |
|
|
1752 | #endif |
|
|
1753 | #ifdef DT_WHT |
|
|
1754 | case DT_WHT: ent->type = EIO_DT_WHT; break; |
|
|
1755 | #endif |
|
|
1756 | } |
|
|
1757 | |
|
|
1758 | ent->score = 7; |
|
|
1759 | |
|
|
1760 | if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1761 | { |
|
|
1762 | if (ent->type == EIO_DT_UNKNOWN) |
|
|
1763 | { |
|
|
1764 | if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ |
|
|
1765 | ent->score = 1; |
|
|
1766 | else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */ |
|
|
1767 | ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */ |
|
|
1768 | } |
|
|
1769 | else if (ent->type == EIO_DT_DIR) |
|
|
1770 | ent->score = 0; |
|
|
1771 | } |
|
|
1772 | } |
|
|
1773 | |
760 | memofs += len; |
1774 | namesoffs += len; |
|
|
1775 | ++dentoffs; |
|
|
1776 | } |
|
|
1777 | |
|
|
1778 | if (EIO_CANCELLED (req)) |
|
|
1779 | { |
|
|
1780 | errno = ECANCELED; |
|
|
1781 | break; |
761 | } |
1782 | } |
762 | } |
1783 | } |
763 | |
|
|
764 | if (errno) |
|
|
765 | res = -1; |
|
|
766 | |
|
|
767 | req->result = res; |
|
|
768 | } |
1784 | } |
769 | |
1785 | |
770 | /*****************************************************************************/ |
1786 | /*****************************************************************************/ |
771 | |
1787 | |
772 | #define ALLOC(len) \ |
1788 | #define ALLOC(len) \ |
… | |
… | |
782 | req->result = -1; \ |
1798 | req->result = -1; \ |
783 | break; \ |
1799 | break; \ |
784 | } \ |
1800 | } \ |
785 | } |
1801 | } |
786 | |
1802 | |
787 | X_THREAD_PROC (eio_proc) |
1803 | X_THREAD_PROC (etp_proc) |
788 | { |
1804 | { |
789 | eio_req *req; |
1805 | ETP_REQ *req; |
790 | struct timespec ts; |
1806 | struct timespec ts; |
791 | worker *self = (worker *)thr_arg; |
1807 | etp_worker *self = (etp_worker *)thr_arg; |
792 | |
1808 | |
793 | /* try to distribute timeouts somewhat randomly */ |
1809 | /* try to distribute timeouts somewhat randomly */ |
794 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
1810 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
795 | |
1811 | |
796 | for (;;) |
1812 | for (;;) |
797 | { |
1813 | { |
798 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
|
|
799 | |
|
|
800 | X_LOCK (reqlock); |
1814 | X_LOCK (reqlock); |
801 | |
1815 | |
802 | for (;;) |
1816 | for (;;) |
803 | { |
1817 | { |
804 | self->req = req = reqq_shift (&req_queue); |
1818 | self->req = req = reqq_shift (&req_queue); |
… | |
… | |
806 | if (req) |
1820 | if (req) |
807 | break; |
1821 | break; |
808 | |
1822 | |
809 | ++idle; |
1823 | ++idle; |
810 | |
1824 | |
|
|
1825 | ts.tv_sec = time (0) + idle_timeout; |
811 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1826 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
812 | { |
1827 | { |
813 | if (idle > max_idle) |
1828 | if (idle > max_idle) |
814 | { |
1829 | { |
815 | --idle; |
1830 | --idle; |
… | |
… | |
820 | goto quit; |
1835 | goto quit; |
821 | } |
1836 | } |
822 | |
1837 | |
823 | /* we are allowed to idle, so do so without any timeout */ |
1838 | /* we are allowed to idle, so do so without any timeout */ |
824 | X_COND_WAIT (reqwait, reqlock); |
1839 | X_COND_WAIT (reqwait, reqlock); |
825 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
|
|
826 | } |
1840 | } |
827 | |
1841 | |
828 | --idle; |
1842 | --idle; |
829 | } |
1843 | } |
830 | |
1844 | |
831 | --nready; |
1845 | --nready; |
832 | |
1846 | |
833 | X_UNLOCK (reqlock); |
1847 | X_UNLOCK (reqlock); |
834 | |
1848 | |
835 | errno = 0; /* strictly unnecessary */ |
|
|
836 | |
|
|
837 | if (!EIO_CANCELLED (req)) |
|
|
838 | switch (req->type) |
1849 | if (req->type < 0) |
839 | { |
|
|
840 | case EIO_READ: ALLOC (req->size); |
|
|
841 | req->result = req->offs >= 0 |
|
|
842 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
|
|
843 | : read (req->int1, req->ptr2, req->size); break; |
|
|
844 | case EIO_WRITE: req->result = req->offs >= 0 |
|
|
845 | ? pwrite (req->int1, req->ptr2, req->size, req->offs) |
|
|
846 | : write (req->int1, req->ptr2, req->size); break; |
|
|
847 | |
|
|
848 | case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
|
|
849 | case EIO_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break; |
|
|
850 | |
|
|
851 | case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
|
|
852 | req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
853 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
|
|
854 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
855 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
|
|
856 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
857 | |
|
|
858 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
|
|
859 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
|
|
860 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
|
|
861 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
|
|
862 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
|
|
863 | case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; |
|
|
864 | |
|
|
865 | case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break; |
|
|
866 | case EIO_CLOSE: req->result = close (req->int1); break; |
|
|
867 | case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; |
|
|
868 | case EIO_UNLINK: req->result = unlink (req->ptr1); break; |
|
|
869 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
|
|
870 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
|
|
871 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
|
|
872 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
|
|
873 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
|
|
874 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
|
|
875 | |
|
|
876 | case EIO_READLINK: ALLOC (NAME_MAX); |
|
|
877 | req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
|
|
878 | |
|
|
879 | case EIO_SYNC: req->result = 0; sync (); break; |
|
|
880 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
|
|
881 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
|
|
882 | |
|
|
883 | case EIO_READDIR: scandir_ (req, self); break; |
|
|
884 | |
|
|
885 | case EIO_BUSY: |
|
|
886 | #ifdef _WIN32 |
|
|
887 | Sleep (req->nv1 * 1000.); |
|
|
888 | #else |
|
|
889 | { |
|
|
890 | struct timeval tv; |
|
|
891 | |
|
|
892 | tv.tv_sec = req->nv1; |
|
|
893 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; |
|
|
894 | |
|
|
895 | req->result = select (0, 0, 0, 0, &tv); |
|
|
896 | } |
|
|
897 | #endif |
|
|
898 | break; |
|
|
899 | |
|
|
900 | case EIO_UTIME: |
|
|
901 | case EIO_FUTIME: |
|
|
902 | { |
|
|
903 | struct timeval tv[2]; |
|
|
904 | struct timeval *times; |
|
|
905 | |
|
|
906 | if (req->nv1 != -1. || req->nv2 != -1.) |
|
|
907 | { |
|
|
908 | tv[0].tv_sec = req->nv1; |
|
|
909 | tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.; |
|
|
910 | tv[1].tv_sec = req->nv2; |
|
|
911 | tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.; |
|
|
912 | |
|
|
913 | times = tv; |
|
|
914 | } |
|
|
915 | else |
|
|
916 | times = 0; |
|
|
917 | |
|
|
918 | |
|
|
919 | req->result = req->type == EIO_FUTIME |
|
|
920 | ? futimes (req->int1, times) |
|
|
921 | : utimes (req->ptr1, times); |
|
|
922 | } |
|
|
923 | |
|
|
924 | case EIO_GROUP: |
|
|
925 | case EIO_NOP: |
|
|
926 | break; |
|
|
927 | |
|
|
928 | case EIO_QUIT: |
|
|
929 | goto quit; |
1850 | goto quit; |
930 | |
1851 | |
931 | default: |
1852 | ETP_EXECUTE (self, req); |
932 | req->result = -1; |
|
|
933 | break; |
|
|
934 | } |
|
|
935 | |
|
|
936 | req->errorno = errno; |
|
|
937 | |
1853 | |
938 | X_LOCK (reslock); |
1854 | X_LOCK (reslock); |
939 | |
1855 | |
940 | ++npending; |
1856 | ++npending; |
941 | |
1857 | |
942 | if (!reqq_push (&res_queue, req) && want_poll_cb) |
1858 | if (!reqq_push (&res_queue, req) && want_poll_cb) |
943 | want_poll_cb (); |
1859 | want_poll_cb (); |
944 | |
1860 | |
945 | self->req = 0; |
1861 | self->req = 0; |
946 | worker_clear (self); |
1862 | etp_worker_clear (self); |
947 | |
1863 | |
948 | X_UNLOCK (reslock); |
1864 | X_UNLOCK (reslock); |
949 | } |
1865 | } |
950 | |
1866 | |
951 | quit: |
1867 | quit: |
952 | X_LOCK (wrklock); |
1868 | X_LOCK (wrklock); |
953 | worker_free (self); |
1869 | etp_worker_free (self); |
954 | X_UNLOCK (wrklock); |
1870 | X_UNLOCK (wrklock); |
955 | |
1871 | |
956 | return 0; |
1872 | return 0; |
957 | } |
1873 | } |
958 | |
1874 | |
959 | /*****************************************************************************/ |
1875 | /*****************************************************************************/ |
960 | |
1876 | |
961 | static void eio_atfork_prepare (void) |
1877 | int ecb_cold |
962 | { |
|
|
963 | X_LOCK (wrklock); |
|
|
964 | X_LOCK (reqlock); |
|
|
965 | X_LOCK (reslock); |
|
|
966 | #if !HAVE_PREADWRITE |
|
|
967 | X_LOCK (preadwritelock); |
|
|
968 | #endif |
|
|
969 | #if !HAVE_READDIR_R |
|
|
970 | X_LOCK (readdirlock); |
|
|
971 | #endif |
|
|
972 | } |
|
|
973 | |
|
|
974 | static void eio_atfork_parent (void) |
|
|
975 | { |
|
|
976 | #if !HAVE_READDIR_R |
|
|
977 | X_UNLOCK (readdirlock); |
|
|
978 | #endif |
|
|
979 | #if !HAVE_PREADWRITE |
|
|
980 | X_UNLOCK (preadwritelock); |
|
|
981 | #endif |
|
|
982 | X_UNLOCK (reslock); |
|
|
983 | X_UNLOCK (reqlock); |
|
|
984 | X_UNLOCK (wrklock); |
|
|
985 | } |
|
|
986 | |
|
|
987 | static void eio_atfork_child (void) |
|
|
988 | { |
|
|
989 | eio_req *prv; |
|
|
990 | |
|
|
991 | while (prv = reqq_shift (&req_queue)) |
|
|
992 | eio_destroy (prv); |
|
|
993 | |
|
|
994 | while (prv = reqq_shift (&res_queue)) |
|
|
995 | eio_destroy (prv); |
|
|
996 | |
|
|
997 | while (wrk_first.next != &wrk_first) |
|
|
998 | { |
|
|
999 | worker *wrk = wrk_first.next; |
|
|
1000 | |
|
|
1001 | if (wrk->req) |
|
|
1002 | eio_destroy (wrk->req); |
|
|
1003 | |
|
|
1004 | worker_clear (wrk); |
|
|
1005 | worker_free (wrk); |
|
|
1006 | } |
|
|
1007 | |
|
|
1008 | started = 0; |
|
|
1009 | idle = 0; |
|
|
1010 | nreqs = 0; |
|
|
1011 | nready = 0; |
|
|
1012 | npending = 0; |
|
|
1013 | |
|
|
1014 | eio_atfork_parent (); |
|
|
1015 | } |
|
|
1016 | |
|
|
1017 | int eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1878 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1018 | { |
1879 | { |
1019 | want_poll_cb = want_poll; |
1880 | return etp_init (want_poll, done_poll); |
1020 | done_poll_cb = done_poll; |
|
|
1021 | |
|
|
1022 | #ifdef _WIN32 |
|
|
1023 | X_MUTEX_CHECK (wrklock); |
|
|
1024 | X_MUTEX_CHECK (reslock); |
|
|
1025 | X_MUTEX_CHECK (reqlock); |
|
|
1026 | X_MUTEX_CHECK (reqwait); |
|
|
1027 | X_MUTEX_CHECK (preadwritelock); |
|
|
1028 | X_MUTEX_CHECK (readdirlock); |
|
|
1029 | |
|
|
1030 | X_COND_CHECK (reqwait); |
|
|
1031 | #endif |
|
|
1032 | |
|
|
1033 | X_THREAD_ATFORK (eio_atfork_prepare, eio_atfork_parent, eio_atfork_child); |
|
|
1034 | } |
1881 | } |
1035 | |
1882 | |
|
|
1883 | ecb_inline void |
1036 | static void eio_api_destroy (eio_req *req) |
1884 | eio_api_destroy (eio_req *req) |
1037 | { |
1885 | { |
1038 | free (req); |
1886 | free (req); |
1039 | } |
1887 | } |
1040 | |
1888 | |
1041 | #define REQ(rtype) \ |
1889 | #define REQ(rtype) \ |
… | |
… | |
1043 | \ |
1891 | \ |
1044 | req = (eio_req *)calloc (1, sizeof *req); \ |
1892 | req = (eio_req *)calloc (1, sizeof *req); \ |
1045 | if (!req) \ |
1893 | if (!req) \ |
1046 | return 0; \ |
1894 | return 0; \ |
1047 | \ |
1895 | \ |
1048 | req->type = EIO_ ## rtype; \ |
1896 | req->type = rtype; \ |
1049 | req->pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \ |
1897 | req->pri = pri; \ |
1050 | req->finish = cb; \ |
1898 | req->finish = cb; \ |
|
|
1899 | req->data = data; \ |
1051 | req->destroy = eio_api_destroy; |
1900 | req->destroy = eio_api_destroy; |
1052 | |
1901 | |
1053 | #define SEND eio_submit (req); return req |
1902 | #define SEND eio_submit (req); return req |
1054 | |
1903 | |
1055 | #define PATH (void)0 |
1904 | #define PATH \ |
|
|
1905 | req->flags |= EIO_FLAG_PTR1_FREE; \ |
|
|
1906 | req->ptr1 = strdup (path); \ |
|
|
1907 | if (!req->ptr1) \ |
|
|
1908 | { \ |
|
|
1909 | eio_api_destroy (req); \ |
|
|
1910 | return 0; \ |
|
|
1911 | } |
1056 | |
1912 | |
|
|
1913 | static void |
|
|
1914 | eio_execute (etp_worker *self, eio_req *req) |
|
|
1915 | { |
|
|
1916 | if (ecb_expect_false (EIO_CANCELLED (req))) |
|
|
1917 | { |
|
|
1918 | req->result = -1; |
|
|
1919 | req->errorno = ECANCELED; |
|
|
1920 | return; |
|
|
1921 | } |
|
|
1922 | |
|
|
1923 | switch (req->type) |
|
|
1924 | { |
|
|
1925 | case EIO_READ: ALLOC (req->size); |
|
|
1926 | req->result = req->offs >= 0 |
|
|
1927 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
|
|
1928 | : read (req->int1, req->ptr2, req->size); break; |
|
|
1929 | case EIO_WRITE: req->result = req->offs >= 0 |
|
|
1930 | ? pwrite (req->int1, req->ptr2, req->size, req->offs) |
|
|
1931 | : write (req->int1, req->ptr2, req->size); break; |
|
|
1932 | |
|
|
1933 | case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
|
|
1934 | case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break; |
|
|
1935 | |
|
|
1936 | case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
|
|
1937 | req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
1938 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
|
|
1939 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
1940 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
|
|
1941 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
1942 | |
|
|
1943 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
1944 | req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
1945 | case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
1946 | req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
1947 | |
|
|
1948 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
|
|
1949 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
|
|
1950 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
|
|
1951 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
|
|
1952 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
|
|
1953 | case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; |
|
|
1954 | |
|
|
1955 | case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break; |
|
|
1956 | case EIO_CLOSE: req->result = close (req->int1); break; |
|
|
1957 | case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; |
|
|
1958 | case EIO_UNLINK: req->result = unlink (req->ptr1); break; |
|
|
1959 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
|
|
1960 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
|
|
1961 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
|
|
1962 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
|
|
1963 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
|
|
1964 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
|
|
1965 | |
|
|
1966 | case EIO_REALPATH: eio__realpath (req, self); break; |
|
|
1967 | |
|
|
1968 | case EIO_READLINK: ALLOC (PATH_MAX); |
|
|
1969 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
|
|
1970 | |
|
|
1971 | case EIO_SYNC: req->result = 0; sync (); break; |
|
|
1972 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
|
|
1973 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
|
|
1974 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
|
|
1975 | case EIO_MTOUCH: req->result = eio__mtouch (req); break; |
|
|
1976 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
|
|
1977 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
|
|
1978 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
|
|
1979 | case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break; |
|
|
1980 | |
|
|
1981 | case EIO_READDIR: eio__scandir (req, self); break; |
|
|
1982 | |
|
|
1983 | case EIO_BUSY: |
|
|
1984 | #ifdef _WIN32 |
|
|
1985 | Sleep (req->nv1 * 1e3); |
|
|
1986 | #else |
|
|
1987 | { |
|
|
1988 | struct timeval tv; |
|
|
1989 | |
|
|
1990 | tv.tv_sec = req->nv1; |
|
|
1991 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6; |
|
|
1992 | |
|
|
1993 | req->result = select (0, 0, 0, 0, &tv); |
|
|
1994 | } |
|
|
1995 | #endif |
|
|
1996 | break; |
|
|
1997 | |
|
|
1998 | case EIO_UTIME: |
|
|
1999 | case EIO_FUTIME: |
|
|
2000 | { |
|
|
2001 | struct timeval tv[2]; |
|
|
2002 | struct timeval *times; |
|
|
2003 | |
|
|
2004 | if (req->nv1 != -1. || req->nv2 != -1.) |
|
|
2005 | { |
|
|
2006 | tv[0].tv_sec = req->nv1; |
|
|
2007 | tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.; |
|
|
2008 | tv[1].tv_sec = req->nv2; |
|
|
2009 | tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.; |
|
|
2010 | |
|
|
2011 | times = tv; |
|
|
2012 | } |
|
|
2013 | else |
|
|
2014 | times = 0; |
|
|
2015 | |
|
|
2016 | req->result = req->type == EIO_FUTIME |
|
|
2017 | ? futimes (req->int1, times) |
|
|
2018 | : utimes (req->ptr1, times); |
|
|
2019 | } |
|
|
2020 | break; |
|
|
2021 | |
|
|
2022 | case EIO_GROUP: |
|
|
2023 | abort (); /* handled in eio_request */ |
|
|
2024 | |
|
|
2025 | case EIO_NOP: |
|
|
2026 | req->result = 0; |
|
|
2027 | break; |
|
|
2028 | |
|
|
2029 | case EIO_CUSTOM: |
|
|
2030 | req->feed (req); |
|
|
2031 | break; |
|
|
2032 | |
|
|
2033 | default: |
|
|
2034 | errno = ENOSYS; |
|
|
2035 | req->result = -1; |
|
|
2036 | break; |
|
|
2037 | } |
|
|
2038 | |
|
|
2039 | req->errorno = errno; |
|
|
2040 | } |
|
|
2041 | |
|
|
2042 | #ifndef EIO_NO_WRAPPERS |
|
|
2043 | |
|
|
2044 | eio_req *eio_nop (int pri, eio_cb cb, void *data) |
|
|
2045 | { |
|
|
2046 | REQ (EIO_NOP); SEND; |
|
|
2047 | } |
|
|
2048 | |
|
|
2049 | eio_req *eio_busy (double delay, int pri, eio_cb cb, void *data) |
|
|
2050 | { |
|
|
2051 | REQ (EIO_BUSY); req->nv1 = delay; SEND; |
|
|
2052 | } |
|
|
2053 | |
1057 | eio_req *eio_fsync (int fd, eio_cb cb) |
2054 | eio_req *eio_sync (int pri, eio_cb cb, void *data) |
1058 | { |
2055 | { |
|
|
2056 | REQ (EIO_SYNC); SEND; |
|
|
2057 | } |
|
|
2058 | |
|
|
2059 | eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data) |
|
|
2060 | { |
1059 | REQ (FSYNC); req->int1 = fd; SEND; |
2061 | REQ (EIO_FSYNC); req->int1 = fd; SEND; |
1060 | } |
2062 | } |
1061 | |
2063 | |
|
|
2064 | eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
|
|
2065 | { |
|
|
2066 | REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
|
|
2067 | } |
|
|
2068 | |
|
|
2069 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
|
|
2070 | { |
|
|
2071 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
|
|
2072 | } |
|
|
2073 | |
|
|
2074 | eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data) |
|
|
2075 | { |
|
|
2076 | REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND; |
|
|
2077 | } |
|
|
2078 | |
|
|
2079 | eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data) |
|
|
2080 | { |
|
|
2081 | REQ (EIO_MLOCKALL); req->int1 = flags; SEND; |
|
|
2082 | } |
|
|
2083 | |
|
|
2084 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
|
|
2085 | { |
|
|
2086 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
|
|
2087 | } |
|
|
2088 | |
|
|
2089 | eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data) |
|
|
2090 | { |
|
|
2091 | REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND; |
|
|
2092 | } |
|
|
2093 | |
1062 | eio_req *eio_fdatasync (int fd, eio_cb cb) |
2094 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
1063 | { |
2095 | { |
1064 | REQ (FDATASYNC); req->int1 = fd; SEND; |
2096 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
1065 | } |
2097 | } |
1066 | |
2098 | |
|
|
2099 | eio_req *eio_close (int fd, int pri, eio_cb cb, void *data) |
|
|
2100 | { |
|
|
2101 | REQ (EIO_CLOSE); req->int1 = fd; SEND; |
|
|
2102 | } |
|
|
2103 | |
1067 | eio_req *eio_readahead (int fd, off_t offset, size_t length, eio_cb cb) |
2104 | eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data) |
1068 | { |
2105 | { |
1069 | REQ (READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND; |
2106 | REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND; |
1070 | } |
2107 | } |
1071 | |
2108 | |
1072 | eio_req *eio_read (int fd, off_t offset, size_t length, void *data, eio_cb cb) |
2109 | eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
1073 | { |
2110 | { |
1074 | REQ (READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = data; SEND; |
2111 | REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
1075 | } |
2112 | } |
1076 | |
2113 | |
1077 | eio_req *eio_write (int fd, off_t offset, size_t length, void *data, eio_cb cb) |
2114 | eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
1078 | { |
2115 | { |
1079 | REQ (WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = data; SEND; |
2116 | REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
1080 | } |
2117 | } |
1081 | |
2118 | |
1082 | eio_req *eio_fstat (int fd, eio_cb cb) |
2119 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
1083 | { |
2120 | { |
1084 | REQ (FSTAT); req->int1 = fd; SEND; |
2121 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
1085 | } |
2122 | } |
1086 | |
2123 | |
|
|
2124 | eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data) |
|
|
2125 | { |
|
|
2126 | REQ (EIO_FSTATVFS); req->int1 = fd; SEND; |
|
|
2127 | } |
|
|
2128 | |
1087 | eio_req *eio_futime (int fd, double atime, double mtime, eio_cb cb) |
2129 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
1088 | { |
2130 | { |
1089 | REQ (FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
2131 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
1090 | } |
2132 | } |
1091 | |
2133 | |
1092 | eio_req *eio_ftruncate (int fd, off_t offset, eio_cb cb) |
2134 | eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data) |
1093 | { |
2135 | { |
1094 | REQ (FTRUNCATE); req->int1 = fd; req->offs = offset; SEND; |
2136 | REQ (EIO_FTRUNCATE); req->int1 = fd; req->offs = offset; SEND; |
1095 | } |
2137 | } |
1096 | |
2138 | |
1097 | eio_req *eio_fchmod (int fd, mode_t mode, eio_cb cb) |
2139 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) |
1098 | { |
2140 | { |
1099 | REQ (FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
2141 | REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
1100 | } |
2142 | } |
1101 | |
2143 | |
1102 | eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, eio_cb cb) |
2144 | eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
1103 | { |
2145 | { |
1104 | REQ (FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
2146 | REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1105 | } |
2147 | } |
1106 | |
2148 | |
1107 | eio_req *eio_dup2 (int fd, int fd2, eio_cb cb) |
2149 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) |
1108 | { |
2150 | { |
1109 | REQ (DUP2); req->int1 = fd; req->int2 = fd2; SEND; |
2151 | REQ (EIO_DUP2); req->int1 = fd; req->int2 = fd2; SEND; |
1110 | } |
2152 | } |
1111 | |
2153 | |
1112 | eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, eio_cb cb) |
2154 | eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data) |
1113 | { |
2155 | { |
1114 | REQ (SENDFILE); req->int1 = out_fd; req->int2 = in_fd; req->offs = in_offset; req->size = length; SEND; |
2156 | REQ (EIO_SENDFILE); req->int1 = out_fd; req->int2 = in_fd; req->offs = in_offset; req->size = length; SEND; |
1115 | } |
2157 | } |
1116 | |
2158 | |
1117 | eio_req *eio_open (const char *path, int flags, mode_t mode, eio_cb cb) |
2159 | eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data) |
1118 | { |
2160 | { |
1119 | REQ (OPEN); PATH; req->int1 = flags; req->int2 = (long)mode; SEND; |
2161 | REQ (EIO_OPEN); PATH; req->int1 = flags; req->int2 = (long)mode; SEND; |
1120 | } |
2162 | } |
1121 | |
2163 | |
1122 | eio_req *eio_readlink (const char *path, eio_cb cb) |
|
|
1123 | { |
|
|
1124 | REQ (READLINK); PATH; SEND; |
|
|
1125 | } |
|
|
1126 | |
|
|
1127 | eio_req *eio_stat (const char *path, eio_cb cb) |
|
|
1128 | { |
|
|
1129 | REQ (STAT); PATH; SEND; |
|
|
1130 | } |
|
|
1131 | |
|
|
1132 | eio_req *eio_lstat (const char *path, eio_cb cb) |
|
|
1133 | { |
|
|
1134 | REQ (LSTAT); PATH; SEND; |
|
|
1135 | } |
|
|
1136 | |
|
|
1137 | eio_req *eio_utime (const char *path, double atime, double mtime, eio_cb cb) |
2164 | eio_req *eio_utime (const char *path, double atime, double mtime, int pri, eio_cb cb, void *data) |
1138 | { |
2165 | { |
1139 | REQ (UTIME); PATH; req->nv1 = atime; req->nv2 = mtime; SEND; |
2166 | REQ (EIO_UTIME); PATH; req->nv1 = atime; req->nv2 = mtime; SEND; |
1140 | } |
2167 | } |
1141 | |
2168 | |
1142 | eio_req *eio_truncate (const char *path, off_t offset, eio_cb cb) |
2169 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) |
1143 | { |
2170 | { |
1144 | REQ (TRUNCATE); PATH; req->offs = offset; SEND; |
2171 | REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; |
1145 | } |
2172 | } |
1146 | |
2173 | |
1147 | eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, eio_cb cb) |
2174 | eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
1148 | { |
2175 | { |
1149 | REQ (CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
2176 | REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1150 | } |
2177 | } |
1151 | |
2178 | |
1152 | eio_req *eio_chmod (const char *path, mode_t mode, eio_cb cb) |
2179 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
1153 | { |
2180 | { |
1154 | REQ (CHMOD); PATH; req->int2 = (long)mode; SEND; |
2181 | REQ (EIO_CHMOD); PATH; req->int2 = (long)mode; SEND; |
1155 | } |
2182 | } |
1156 | |
2183 | |
1157 | eio_req *eio_mkdir (const char *path, mode_t mode, eio_cb cb) |
2184 | eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
1158 | { |
2185 | { |
1159 | REQ (MKDIR); PATH; req->int2 = (long)mode; SEND; |
2186 | REQ (EIO_MKDIR); PATH; req->int2 = (long)mode; SEND; |
1160 | } |
2187 | } |
1161 | |
2188 | |
1162 | eio_req *eio_unlink (const char *path, eio_cb cb) |
2189 | static eio_req * |
|
|
2190 | eio__1path (int type, const char *path, int pri, eio_cb cb, void *data) |
1163 | { |
2191 | { |
1164 | REQ (UNLINK); PATH; SEND; |
|
|
1165 | } |
|
|
1166 | |
|
|
1167 | eio_req *eio_rmdir (const char *path, eio_cb cb) |
|
|
1168 | { |
|
|
1169 | REQ (RMDIR); PATH; SEND; |
2192 | REQ (type); PATH; SEND; |
1170 | } |
2193 | } |
1171 | |
2194 | |
|
|
2195 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
|
|
2196 | { |
|
|
2197 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
|
|
2198 | } |
|
|
2199 | |
|
|
2200 | eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data) |
|
|
2201 | { |
|
|
2202 | return eio__1path (EIO_REALPATH, path, pri, cb, data); |
|
|
2203 | } |
|
|
2204 | |
|
|
2205 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
|
|
2206 | { |
|
|
2207 | return eio__1path (EIO_STAT, path, pri, cb, data); |
|
|
2208 | } |
|
|
2209 | |
|
|
2210 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
|
|
2211 | { |
|
|
2212 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
|
|
2213 | } |
|
|
2214 | |
|
|
2215 | eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data) |
|
|
2216 | { |
|
|
2217 | return eio__1path (EIO_STATVFS, path, pri, cb, data); |
|
|
2218 | } |
|
|
2219 | |
|
|
2220 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
|
|
2221 | { |
|
|
2222 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
|
|
2223 | } |
|
|
2224 | |
1172 | eio_req *eio_readdir (const char *path, eio_cb cb) |
2225 | eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) |
1173 | { |
2226 | { |
1174 | REQ (READDIR); PATH; SEND; |
2227 | return eio__1path (EIO_RMDIR, path, pri, cb, data); |
1175 | } |
2228 | } |
1176 | |
2229 | |
|
|
2230 | eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data) |
|
|
2231 | { |
|
|
2232 | REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
|
|
2233 | } |
|
|
2234 | |
1177 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, eio_cb cb) |
2235 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1178 | { |
2236 | { |
1179 | REQ (MKNOD); PATH; req->int2 = (long)mode; req->int2 = (long)dev; SEND; |
2237 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND; |
1180 | } |
2238 | } |
1181 | |
2239 | |
1182 | eio_req *eio_busy (double delay, eio_cb cb) |
2240 | static eio_req * |
|
|
2241 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1183 | { |
2242 | { |
1184 | REQ (BUSY); req->nv1 = delay; SEND; |
2243 | REQ (type); PATH; |
1185 | } |
|
|
1186 | |
2244 | |
|
|
2245 | req->flags |= EIO_FLAG_PTR2_FREE; |
|
|
2246 | req->ptr2 = strdup (new_path); |
|
|
2247 | if (!req->ptr2) |
|
|
2248 | { |
|
|
2249 | eio_api_destroy (req); |
|
|
2250 | return 0; |
|
|
2251 | } |
|
|
2252 | |
|
|
2253 | SEND; |
|
|
2254 | } |
|
|
2255 | |
|
|
2256 | eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
|
|
2257 | { |
|
|
2258 | return eio__2path (EIO_LINK, path, new_path, pri, cb, data); |
|
|
2259 | } |
|
|
2260 | |
|
|
2261 | eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
|
|
2262 | { |
|
|
2263 | return eio__2path (EIO_SYMLINK, path, new_path, pri, cb, data); |
|
|
2264 | } |
|
|
2265 | |
|
|
2266 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
|
|
2267 | { |
|
|
2268 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
|
|
2269 | } |
|
|
2270 | |
|
|
2271 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data) |
|
|
2272 | { |
|
|
2273 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
|
|
2274 | } |
|
|
2275 | |
|
|
2276 | #endif |
|
|
2277 | |
1187 | eio_req *eio_nop (eio_cb cb) |
2278 | eio_req *eio_grp (eio_cb cb, void *data) |
1188 | { |
2279 | { |
|
|
2280 | const int pri = EIO_PRI_MAX; |
|
|
2281 | |
1189 | REQ (NOP); SEND; |
2282 | REQ (EIO_GROUP); SEND; |
1190 | } |
2283 | } |
1191 | |
2284 | |
1192 | #undef REQ |
2285 | #undef REQ |
1193 | #undef PATH |
2286 | #undef PATH |
1194 | #undef SEND |
2287 | #undef SEND |
1195 | |
2288 | |
1196 | #if 0 |
2289 | /*****************************************************************************/ |
|
|
2290 | /* grp functions */ |
1197 | |
2291 | |
1198 | void |
2292 | void |
1199 | aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) |
|
|
1200 | PROTOTYPE: $$$;$ |
|
|
1201 | PPCODE: |
|
|
1202 | { |
|
|
1203 | dREQ; |
|
|
1204 | |
|
|
1205 | req->type = EIO_OPEN; |
|
|
1206 | req->sv1 = newSVsv (pathname); |
|
|
1207 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1208 | req->int1 = flags; |
|
|
1209 | req->int2 = mode; |
|
|
1210 | |
|
|
1211 | EIO_SEND; |
|
|
1212 | } |
|
|
1213 | |
|
|
1214 | void |
|
|
1215 | aio_fsync (SV *fh, SV *callback=&PL_sv_undef) |
|
|
1216 | PROTOTYPE: $;$ |
|
|
1217 | ALIAS: |
|
|
1218 | aio_fsync = EIO_FSYNC |
|
|
1219 | aio_fdatasync = EIO_FDATASYNC |
|
|
1220 | PPCODE: |
|
|
1221 | { |
|
|
1222 | dREQ; |
|
|
1223 | |
|
|
1224 | req->type = ix; |
|
|
1225 | req->sv1 = newSVsv (fh); |
|
|
1226 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
1227 | |
|
|
1228 | EIO_SEND (req); |
|
|
1229 | } |
|
|
1230 | |
|
|
1231 | void |
|
|
1232 | aio_close (SV *fh, SV *callback=&PL_sv_undef) |
|
|
1233 | PROTOTYPE: $;$ |
|
|
1234 | PPCODE: |
|
|
1235 | { |
|
|
1236 | dREQ; |
|
|
1237 | |
|
|
1238 | req->type = EIO_CLOSE; |
|
|
1239 | req->sv1 = newSVsv (fh); |
|
|
1240 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
1241 | |
|
|
1242 | EIO_SEND (req); |
|
|
1243 | } |
|
|
1244 | |
|
|
1245 | void |
|
|
1246 | aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) |
|
|
1247 | ALIAS: |
|
|
1248 | aio_read = EIO_READ |
|
|
1249 | aio_write = EIO_WRITE |
|
|
1250 | PROTOTYPE: $$$$$;$ |
|
|
1251 | PPCODE: |
|
|
1252 | { |
|
|
1253 | STRLEN svlen; |
|
|
1254 | char *svptr = SvPVbyte (data, svlen); |
|
|
1255 | UV len = SvUV (length); |
|
|
1256 | |
|
|
1257 | SvUPGRADE (data, SVt_PV); |
|
|
1258 | SvPOK_on (data); |
|
|
1259 | |
|
|
1260 | if (dataoffset < 0) |
|
|
1261 | dataoffset += svlen; |
|
|
1262 | |
|
|
1263 | if (dataoffset < 0 || dataoffset > svlen) |
|
|
1264 | croak ("dataoffset outside of data scalar"); |
|
|
1265 | |
|
|
1266 | if (ix == EIO_WRITE) |
|
|
1267 | { |
|
|
1268 | /* write: check length and adjust. */ |
|
|
1269 | if (!SvOK (length) || len + dataoffset > svlen) |
|
|
1270 | len = svlen - dataoffset; |
|
|
1271 | } |
|
|
1272 | else |
|
|
1273 | { |
|
|
1274 | /* read: grow scalar as necessary */ |
|
|
1275 | svptr = SvGROW (data, len + dataoffset + 1); |
|
|
1276 | } |
|
|
1277 | |
|
|
1278 | if (len < 0) |
|
|
1279 | croak ("length must not be negative"); |
|
|
1280 | |
|
|
1281 | { |
|
|
1282 | dREQ; |
|
|
1283 | |
|
|
1284 | req->type = ix; |
|
|
1285 | req->sv1 = newSVsv (fh); |
|
|
1286 | req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh)) |
|
|
1287 | : IoOFP (sv_2io (fh))); |
|
|
1288 | req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; |
|
|
1289 | req->size = len; |
|
|
1290 | req->sv2 = SvREFCNT_inc (data); |
|
|
1291 | req->ptr2 = (char *)svptr + dataoffset; |
|
|
1292 | req->stroffset = dataoffset; |
|
|
1293 | |
|
|
1294 | if (!SvREADONLY (data)) |
|
|
1295 | { |
|
|
1296 | SvREADONLY_on (data); |
|
|
1297 | req->flags |= FLAG_SV2_RO_OFF; |
|
|
1298 | } |
|
|
1299 | |
|
|
1300 | EIO_SEND; |
|
|
1301 | } |
|
|
1302 | } |
|
|
1303 | |
|
|
1304 | void |
|
|
1305 | aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) |
|
|
1306 | PROTOTYPE: $$;$ |
|
|
1307 | PPCODE: |
|
|
1308 | { |
|
|
1309 | SV *data; |
|
|
1310 | dREQ; |
|
|
1311 | |
|
|
1312 | data = newSV (NAME_MAX); |
|
|
1313 | SvPOK_on (data); |
|
|
1314 | |
|
|
1315 | req->type = EIO_READLINK; |
|
|
1316 | req->sv1 = newSVsv (path); |
|
|
1317 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1318 | req->sv2 = data; |
|
|
1319 | req->ptr2 = SvPVbyte_nolen (data); |
|
|
1320 | |
|
|
1321 | EIO_SEND; |
|
|
1322 | } |
|
|
1323 | |
|
|
1324 | void |
|
|
1325 | aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef) |
|
|
1326 | PROTOTYPE: $$$$;$ |
|
|
1327 | PPCODE: |
|
|
1328 | { |
|
|
1329 | dREQ; |
|
|
1330 | |
|
|
1331 | req->type = EIO_SENDFILE; |
|
|
1332 | req->sv1 = newSVsv (out_fh); |
|
|
1333 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
|
|
1334 | req->sv2 = newSVsv (in_fh); |
|
|
1335 | req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
|
|
1336 | req->offs = SvVAL64 (in_offset); |
|
|
1337 | req->size = length; |
|
|
1338 | |
|
|
1339 | EIO_SEND; |
|
|
1340 | } |
|
|
1341 | |
|
|
1342 | void |
|
|
1343 | aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef) |
|
|
1344 | PROTOTYPE: $$$;$ |
|
|
1345 | PPCODE: |
|
|
1346 | { |
|
|
1347 | dREQ; |
|
|
1348 | |
|
|
1349 | req->type = EIO_READAHEAD; |
|
|
1350 | req->sv1 = newSVsv (fh); |
|
|
1351 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
1352 | req->offs = SvVAL64 (offset); |
|
|
1353 | req->size = length; |
|
|
1354 | |
|
|
1355 | EIO_SEND; |
|
|
1356 | } |
|
|
1357 | |
|
|
1358 | void |
|
|
1359 | aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef) |
|
|
1360 | ALIAS: |
|
|
1361 | aio_stat = EIO_STAT |
|
|
1362 | aio_lstat = EIO_LSTAT |
|
|
1363 | PPCODE: |
|
|
1364 | { |
|
|
1365 | dREQ; |
|
|
1366 | |
|
|
1367 | req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT)); |
|
|
1368 | if (!req->ptr2) |
|
|
1369 | { |
|
|
1370 | req_destroy (req); |
|
|
1371 | croak ("out of memory during aio_stat statdata allocation"); |
|
|
1372 | } |
|
|
1373 | |
|
|
1374 | req->flags |= FLAG_PTR2_FREE; |
|
|
1375 | req->sv1 = newSVsv (fh_or_path); |
|
|
1376 | |
|
|
1377 | if (SvPOK (fh_or_path)) |
|
|
1378 | { |
|
|
1379 | req->type = ix; |
|
|
1380 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1381 | } |
|
|
1382 | else |
|
|
1383 | { |
|
|
1384 | req->type = EIO_FSTAT; |
|
|
1385 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
|
|
1386 | } |
|
|
1387 | |
|
|
1388 | EIO_SEND; |
|
|
1389 | } |
|
|
1390 | |
|
|
1391 | void |
|
|
1392 | aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef) |
|
|
1393 | PPCODE: |
|
|
1394 | { |
|
|
1395 | dREQ; |
|
|
1396 | |
|
|
1397 | req->nv1 = SvOK (atime) ? SvNV (atime) : -1.; |
|
|
1398 | req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.; |
|
|
1399 | req->sv1 = newSVsv (fh_or_path); |
|
|
1400 | |
|
|
1401 | if (SvPOK (fh_or_path)) |
|
|
1402 | { |
|
|
1403 | req->type = EIO_UTIME; |
|
|
1404 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1405 | } |
|
|
1406 | else |
|
|
1407 | { |
|
|
1408 | req->type = EIO_FUTIME; |
|
|
1409 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
|
|
1410 | } |
|
|
1411 | |
|
|
1412 | EIO_SEND; |
|
|
1413 | } |
|
|
1414 | |
|
|
1415 | void |
|
|
1416 | aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef) |
|
|
1417 | PPCODE: |
|
|
1418 | { |
|
|
1419 | dREQ; |
|
|
1420 | |
|
|
1421 | req->sv1 = newSVsv (fh_or_path); |
|
|
1422 | req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; |
|
|
1423 | |
|
|
1424 | if (SvPOK (fh_or_path)) |
|
|
1425 | { |
|
|
1426 | req->type = EIO_TRUNCATE; |
|
|
1427 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1428 | } |
|
|
1429 | else |
|
|
1430 | { |
|
|
1431 | req->type = EIO_FTRUNCATE; |
|
|
1432 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
|
|
1433 | } |
|
|
1434 | |
|
|
1435 | EIO_SEND; |
|
|
1436 | } |
|
|
1437 | |
|
|
1438 | void |
|
|
1439 | aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef) |
|
|
1440 | ALIAS: |
|
|
1441 | aio_chmod = EIO_CHMOD |
|
|
1442 | aio_fchmod = EIO_FCHMOD |
|
|
1443 | aio_mkdir = EIO_MKDIR |
|
|
1444 | PPCODE: |
|
|
1445 | { |
|
|
1446 | dREQ; |
|
|
1447 | |
|
|
1448 | req->type = type; |
|
|
1449 | req->int2 = mode; |
|
|
1450 | req->sv1 = newSVsv (fh_or_path); |
|
|
1451 | |
|
|
1452 | if (ix == EIO_FCHMOD) |
|
|
1453 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
|
|
1454 | else |
|
|
1455 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1456 | |
|
|
1457 | EIO_SEND; |
|
|
1458 | } |
|
|
1459 | |
|
|
1460 | void |
|
|
1461 | aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef) |
|
|
1462 | PPCODE: |
|
|
1463 | { |
|
|
1464 | dREQ; |
|
|
1465 | |
|
|
1466 | req->int2 = SvOK (uid) ? SvIV (uid) : -1; |
|
|
1467 | req->int3 = SvOK (gid) ? SvIV (gid) : -1; |
|
|
1468 | req->sv1 = newSVsv (fh_or_path); |
|
|
1469 | |
|
|
1470 | if (SvPOK (fh_or_path)) |
|
|
1471 | { |
|
|
1472 | req->type = EIO_CHOWN; |
|
|
1473 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1474 | } |
|
|
1475 | else |
|
|
1476 | { |
|
|
1477 | req->type = EIO_FCHOWN; |
|
|
1478 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
|
|
1479 | } |
|
|
1480 | |
|
|
1481 | EIO_SEND; |
|
|
1482 | } |
|
|
1483 | |
|
|
1484 | void |
|
|
1485 | aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef) |
|
|
1486 | ALIAS: |
|
|
1487 | aio_unlink = EIO_UNLINK |
|
|
1488 | aio_rmdir = EIO_RMDIR |
|
|
1489 | aio_readdir = EIO_READDIR |
|
|
1490 | PPCODE: |
|
|
1491 | { |
|
|
1492 | dREQ; |
|
|
1493 | |
|
|
1494 | req->type = ix; |
|
|
1495 | req->sv1 = newSVsv (pathname); |
|
|
1496 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1497 | |
|
|
1498 | EIO_SEND; |
|
|
1499 | } |
|
|
1500 | |
|
|
1501 | void |
|
|
1502 | aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef) |
|
|
1503 | ALIAS: |
|
|
1504 | aio_link = EIO_LINK |
|
|
1505 | aio_symlink = EIO_SYMLINK |
|
|
1506 | aio_rename = EIO_RENAME |
|
|
1507 | PPCODE: |
|
|
1508 | { |
|
|
1509 | dREQ; |
|
|
1510 | |
|
|
1511 | req->type = ix; |
|
|
1512 | req->sv1 = newSVsv (oldpath); |
|
|
1513 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1514 | req->sv2 = newSVsv (newpath); |
|
|
1515 | req->ptr2 = SvPVbyte_nolen (req->sv2); |
|
|
1516 | |
|
|
1517 | EIO_SEND; |
|
|
1518 | } |
|
|
1519 | |
|
|
1520 | void |
|
|
1521 | aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef) |
|
|
1522 | PPCODE: |
|
|
1523 | { |
|
|
1524 | dREQ; |
|
|
1525 | |
|
|
1526 | req->type = EIO_MKNOD; |
|
|
1527 | req->sv1 = newSVsv (pathname); |
|
|
1528 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1529 | req->int2 = (mode_t)mode; |
|
|
1530 | req->offs = dev; |
|
|
1531 | |
|
|
1532 | EIO_SEND; |
|
|
1533 | } |
|
|
1534 | |
|
|
1535 | void |
|
|
1536 | aio_busy (double delay, SV *callback=&PL_sv_undef) |
|
|
1537 | PPCODE: |
|
|
1538 | { |
|
|
1539 | dREQ; |
|
|
1540 | |
|
|
1541 | req->type = EIO_BUSY; |
|
|
1542 | req->nv1 = delay < 0. ? 0. : delay; |
|
|
1543 | |
|
|
1544 | EIO_SEND; |
|
|
1545 | } |
|
|
1546 | |
|
|
1547 | void |
|
|
1548 | aio_group (SV *callback=&PL_sv_undef) |
|
|
1549 | PROTOTYPE: ;$ |
|
|
1550 | PPCODE: |
|
|
1551 | { |
|
|
1552 | dREQ; |
|
|
1553 | |
|
|
1554 | req->type = EIO_GROUP; |
|
|
1555 | |
|
|
1556 | req_send (req); |
|
|
1557 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
|
|
1558 | } |
|
|
1559 | |
|
|
1560 | void |
|
|
1561 | aio_nop (SV *callback=&PL_sv_undef) |
|
|
1562 | ALIAS: |
|
|
1563 | aio_nop = EIO_NOP |
|
|
1564 | aio_sync = EIO_SYNC |
|
|
1565 | PPCODE: |
|
|
1566 | { |
|
|
1567 | dREQ; |
|
|
1568 | |
|
|
1569 | #endif |
|
|
1570 | |
|
|
1571 | void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
2293 | eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
1572 | { |
2294 | { |
1573 | grp->int2 = limit; |
2295 | grp->int2 = limit; |
1574 | grp->feed = feed; |
2296 | grp->feed = feed; |
1575 | |
2297 | |
1576 | grp_try_feed (grp); |
2298 | grp_try_feed (grp); |
1577 | } |
2299 | } |
1578 | |
2300 | |
|
|
2301 | void |
1579 | void eio_grp_limit (eio_req *grp, int limit) |
2302 | eio_grp_limit (eio_req *grp, int limit) |
1580 | { |
2303 | { |
1581 | grp->int2 = limit; |
2304 | grp->int2 = limit; |
1582 | |
2305 | |
1583 | grp_try_feed (grp); |
2306 | grp_try_feed (grp); |
1584 | } |
2307 | } |
1585 | |
2308 | |
|
|
2309 | void |
1586 | void eio_grp_add (eio_req *grp, eio_req *req) |
2310 | eio_grp_add (eio_req *grp, eio_req *req) |
1587 | { |
2311 | { |
1588 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
2312 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
|
|
2313 | |
|
|
2314 | grp->flags |= EIO_FLAG_GROUPADD; |
1589 | |
2315 | |
1590 | ++grp->size; |
2316 | ++grp->size; |
1591 | req->grp = grp; |
2317 | req->grp = grp; |
1592 | |
2318 | |
1593 | req->grp_prev = 0; |
2319 | req->grp_prev = 0; |
… | |
… | |
1597 | grp->grp_first->grp_prev = req; |
2323 | grp->grp_first->grp_prev = req; |
1598 | |
2324 | |
1599 | grp->grp_first = req; |
2325 | grp->grp_first = req; |
1600 | } |
2326 | } |
1601 | |
2327 | |
|
|
2328 | /*****************************************************************************/ |
|
|
2329 | /* misc garbage */ |
1602 | |
2330 | |
|
|
2331 | ssize_t |
|
|
2332 | eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
|
|
2333 | { |
|
|
2334 | etp_worker wrk; |
|
|
2335 | ssize_t ret; |
|
|
2336 | |
|
|
2337 | wrk.dbuf = 0; |
|
|
2338 | |
|
|
2339 | ret = eio__sendfile (ofd, ifd, offset, count, &wrk); |
|
|
2340 | |
|
|
2341 | if (wrk.dbuf) |
|
|
2342 | free (wrk.dbuf); |
|
|
2343 | |
|
|
2344 | return ret; |
|
|
2345 | } |
|
|
2346 | |