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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 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 | |
1 | #include "eio.h" |
40 | #include "eio.h" |
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41 | |
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42 | #ifdef EIO_STACKSIZE |
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43 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
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44 | #endif |
2 | #include "xthread.h" |
45 | #include "xthread.h" |
3 | |
46 | |
4 | #include <errno.h> |
47 | #include <errno.h> |
5 | |
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6 | #include "EXTERN.h" |
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7 | #include "perl.h" |
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8 | #include "XSUB.h" |
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9 | |
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10 | #include <stddef.h> |
48 | #include <stddef.h> |
11 | #include <stdlib.h> |
49 | #include <stdlib.h> |
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50 | #include <string.h> |
12 | #include <errno.h> |
51 | #include <errno.h> |
13 | #include <sys/types.h> |
52 | #include <sys/types.h> |
14 | #include <sys/stat.h> |
53 | #include <sys/stat.h> |
15 | #include <limits.h> |
54 | #include <limits.h> |
16 | #include <fcntl.h> |
55 | #include <fcntl.h> |
17 | #include <sched.h> |
56 | #include <assert.h> |
18 | |
57 | |
19 | #ifndef EIO_FINISH |
58 | #ifndef EIO_FINISH |
20 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
59 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
21 | #endif |
60 | #endif |
22 | |
61 | |
… | |
… | |
29 | #endif |
68 | #endif |
30 | |
69 | |
31 | #ifdef _WIN32 |
70 | #ifdef _WIN32 |
32 | |
71 | |
33 | /*doh*/ |
72 | /*doh*/ |
34 | |
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35 | #else |
73 | #else |
36 | |
74 | |
37 | # include "config.h" |
75 | # include "config.h" |
38 | # include <sys/time.h> |
76 | # include <sys/time.h> |
39 | # include <sys/select.h> |
77 | # include <sys/select.h> |
40 | # include <unistd.h> |
78 | # include <unistd.h> |
41 | # include <utime.h> |
79 | # include <utime.h> |
42 | # include <signal.h> |
80 | # include <signal.h> |
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81 | # include <dirent.h> |
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82 | |
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83 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
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84 | # if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) |
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85 | # define _DIRENT_HAVE_D_TYPE /* sigh */ |
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86 | # define D_INO(de) (de)->d_fileno |
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87 | # define D_NAMLEN(de) (de)->d_namlen |
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88 | # elif defined(__linux) || defined(d_ino) || _XOPEN_SOURCE >= 600 |
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89 | # define D_INO(de) (de)->d_ino |
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90 | # endif |
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91 | |
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92 | #ifdef _D_EXACT_NAMLEN |
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93 | # undef D_NAMLEN |
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94 | # define D_NAMLEN(de) _D_EXACT_NAMLEN (de) |
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95 | #endif |
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96 | |
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97 | # ifdef _DIRENT_HAVE_D_TYPE |
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98 | # define D_TYPE(de) (de)->d_type |
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99 | # endif |
43 | |
100 | |
44 | # ifndef EIO_STRUCT_DIRENT |
101 | # ifndef EIO_STRUCT_DIRENT |
45 | # define EIO_STRUCT_DIRENT struct dirent |
102 | # define EIO_STRUCT_DIRENT struct dirent |
46 | # endif |
103 | # endif |
47 | |
104 | |
48 | #endif |
105 | #endif |
49 | |
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50 | # ifndef EIO_STRUCT_STAT |
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51 | # define EIO_STRUCT_STAT struct stat |
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52 | # endif |
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53 | |
106 | |
54 | #if HAVE_SENDFILE |
107 | #if HAVE_SENDFILE |
55 | # if __linux |
108 | # if __linux |
56 | # include <sys/sendfile.h> |
109 | # include <sys/sendfile.h> |
57 | # elif __freebsd |
110 | # elif __freebsd |
… | |
… | |
64 | # else |
117 | # else |
65 | # error sendfile support requested but not available |
118 | # error sendfile support requested but not available |
66 | # endif |
119 | # endif |
67 | #endif |
120 | #endif |
68 | |
121 | |
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122 | #ifndef D_TYPE |
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123 | # define D_TYPE(de) 0 |
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124 | #endif |
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125 | #ifndef D_INO |
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126 | # define D_INO(de) 0 |
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127 | #endif |
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128 | #ifndef D_NAMLEN |
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129 | # define D_NAMLEN(de) strlen ((de)->d_name) |
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130 | #endif |
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131 | |
69 | /* number of seconds after which an idle threads exit */ |
132 | /* number of seconds after which an idle threads exit */ |
70 | #define IDLE_TIMEOUT 10 |
133 | #define IDLE_TIMEOUT 10 |
71 | |
134 | |
72 | /* used for struct dirent, AIX doesn't provide it */ |
135 | /* used for struct dirent, AIX doesn't provide it */ |
73 | #ifndef NAME_MAX |
136 | #ifndef NAME_MAX |
… | |
… | |
77 | /* buffer size for various temporary buffers */ |
140 | /* buffer size for various temporary buffers */ |
78 | #define EIO_BUFSIZE 65536 |
141 | #define EIO_BUFSIZE 65536 |
79 | |
142 | |
80 | #define dBUF \ |
143 | #define dBUF \ |
81 | char *eio_buf; \ |
144 | char *eio_buf; \ |
82 | X_LOCK (wrklock); \ |
145 | ETP_WORKER_LOCK (self); \ |
83 | self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ |
146 | self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ |
84 | X_UNLOCK (wrklock); \ |
147 | ETP_WORKER_UNLOCK (self); \ |
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148 | errno = ENOMEM; \ |
85 | if (!eio_buf) \ |
149 | if (!eio_buf) \ |
86 | return -1; |
150 | return -1; |
87 | |
151 | |
88 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
152 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
89 | |
153 | |
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154 | /*****************************************************************************/ |
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155 | |
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156 | #if __GNUC__ >= 3 |
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157 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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158 | #else |
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159 | # define expect(expr,value) (expr) |
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160 | #endif |
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161 | |
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162 | #define expect_false(expr) expect ((expr) != 0, 0) |
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163 | #define expect_true(expr) expect ((expr) != 0, 1) |
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164 | |
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165 | /*****************************************************************************/ |
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166 | |
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167 | #define ETP_PRI_MIN EIO_PRI_MIN |
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168 | #define ETP_PRI_MAX EIO_PRI_MAX |
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169 | |
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170 | struct etp_worker; |
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171 | |
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172 | #define ETP_REQ eio_req |
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173 | #define ETP_DESTROY(req) eio_destroy (req) |
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174 | static int eio_finish (eio_req *req); |
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175 | #define ETP_FINISH(req) eio_finish (req) |
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176 | static void eio_execute (struct etp_worker *self, eio_req *req); |
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177 | #define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) |
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178 | |
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179 | #define ETP_WORKER_CLEAR(req) \ |
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180 | if (wrk->dbuf) \ |
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181 | { \ |
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182 | free (wrk->dbuf); \ |
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183 | wrk->dbuf = 0; \ |
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184 | } \ |
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185 | \ |
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186 | if (wrk->dirp) \ |
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187 | { \ |
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188 | closedir (wrk->dirp); \ |
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189 | wrk->dirp = 0; \ |
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190 | } |
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191 | |
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192 | #define ETP_WORKER_COMMON \ |
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193 | void *dbuf; \ |
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194 | DIR *dirp; |
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195 | |
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196 | /*****************************************************************************/ |
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197 | |
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198 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
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199 | |
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200 | /* calculcate time difference in ~1/EIO_TICKS of a second */ |
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201 | static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
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202 | { |
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203 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
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204 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
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205 | } |
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206 | |
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207 | static unsigned int started, idle, wanted = 4; |
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208 | |
90 | static void (*want_poll_cb) (void); |
209 | static void (*want_poll_cb) (void); |
91 | static void (*done_poll_cb) (void); |
210 | static void (*done_poll_cb) (void); |
92 | |
211 | |
93 | static unsigned int max_poll_time = 0; |
212 | static unsigned int max_poll_time; /* reslock */ |
94 | static unsigned int max_poll_reqs = 0; |
213 | static unsigned int max_poll_reqs; /* reslock */ |
95 | |
214 | |
96 | /* calculcate time difference in ~1/EIO_TICKS of a second */ |
215 | static volatile unsigned int nreqs; /* reqlock */ |
97 | static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
216 | static volatile unsigned int nready; /* reqlock */ |
98 | { |
217 | static volatile unsigned int npending; /* reqlock */ |
99 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
218 | static volatile unsigned int max_idle = 4; |
100 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
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101 | } |
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102 | |
219 | |
103 | static unsigned int started, idle, wanted; |
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104 | |
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105 | /* worker threads management */ |
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106 | static mutex_t wrklock = X_MUTEX_INIT; |
220 | static mutex_t wrklock = X_MUTEX_INIT; |
107 | |
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108 | typedef struct worker { |
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109 | /* locked by wrklock */ |
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110 | struct worker *prev, *next; |
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111 | |
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112 | thread_t tid; |
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113 | |
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114 | /* locked by reslock, reqlock or wrklock */ |
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115 | eio_req *req; /* currently processed request */ |
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116 | void *dbuf; |
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117 | DIR *dirp; |
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118 | } worker; |
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119 | |
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120 | static worker wrk_first = { &wrk_first, &wrk_first, 0 }; |
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121 | |
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122 | static void worker_clear (worker *wrk) |
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123 | { |
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124 | if (wrk->dirp) |
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125 | { |
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126 | closedir (wrk->dirp); |
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127 | wrk->dirp = 0; |
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128 | } |
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129 | |
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130 | if (wrk->dbuf) |
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131 | { |
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132 | free (wrk->dbuf); |
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133 | wrk->dbuf = 0; |
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134 | } |
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135 | } |
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136 | |
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137 | static void worker_free (worker *wrk) |
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138 | { |
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139 | wrk->next->prev = wrk->prev; |
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140 | wrk->prev->next = wrk->next; |
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141 | |
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142 | free (wrk); |
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143 | } |
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144 | |
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145 | static volatile unsigned int nreqs, nready, npending; |
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146 | static volatile unsigned int max_idle = 4; |
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147 | |
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148 | static mutex_t reslock = X_MUTEX_INIT; |
221 | static mutex_t reslock = X_MUTEX_INIT; |
149 | static mutex_t reqlock = X_MUTEX_INIT; |
222 | static mutex_t reqlock = X_MUTEX_INIT; |
150 | static cond_t reqwait = X_COND_INIT; |
223 | static cond_t reqwait = X_COND_INIT; |
151 | |
224 | |
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225 | #if !HAVE_PREADWRITE |
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226 | /* |
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227 | * make our pread/pwrite emulation safe against themselves, but not against |
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228 | * normal read/write by using a mutex. slows down execution a lot, |
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229 | * but that's your problem, not mine. |
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230 | */ |
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231 | static mutex_t preadwritelock = X_MUTEX_INIT; |
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232 | #endif |
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233 | |
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234 | typedef struct etp_worker |
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235 | { |
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236 | /* locked by wrklock */ |
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237 | struct etp_worker *prev, *next; |
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238 | |
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239 | thread_t tid; |
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240 | |
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241 | /* locked by reslock, reqlock or wrklock */ |
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242 | ETP_REQ *req; /* currently processed request */ |
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243 | |
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244 | ETP_WORKER_COMMON |
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245 | } etp_worker; |
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246 | |
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247 | static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */ |
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248 | |
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249 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
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250 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
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251 | |
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252 | /* worker threads management */ |
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253 | |
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254 | static void etp_worker_clear (etp_worker *wrk) |
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255 | { |
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256 | ETP_WORKER_CLEAR (wrk); |
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257 | } |
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258 | |
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259 | static void etp_worker_free (etp_worker *wrk) |
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260 | { |
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261 | wrk->next->prev = wrk->prev; |
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262 | wrk->prev->next = wrk->next; |
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263 | |
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264 | free (wrk); |
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265 | } |
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266 | |
152 | unsigned int eio_nreqs (void) |
267 | static unsigned int etp_nreqs (void) |
153 | { |
268 | { |
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269 | int retval; |
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270 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
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271 | retval = nreqs; |
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272 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
154 | return nreqs; |
273 | return retval; |
155 | } |
274 | } |
156 | |
275 | |
157 | unsigned int eio_nready (void) |
276 | static unsigned int etp_nready (void) |
158 | { |
277 | { |
159 | unsigned int retval; |
278 | unsigned int retval; |
160 | |
279 | |
161 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
280 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
162 | retval = nready; |
281 | retval = nready; |
163 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
282 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
164 | |
283 | |
165 | return retval; |
284 | return retval; |
166 | } |
285 | } |
167 | |
286 | |
168 | unsigned int eio_npending (void) |
287 | static unsigned int etp_npending (void) |
169 | { |
288 | { |
170 | unsigned int retval; |
289 | unsigned int retval; |
171 | |
290 | |
172 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
291 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
173 | retval = npending; |
292 | retval = npending; |
174 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
293 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
175 | |
294 | |
176 | return retval; |
295 | return retval; |
177 | } |
296 | } |
178 | |
297 | |
179 | unsigned int eio_nthreads (void) |
298 | static unsigned int etp_nthreads (void) |
180 | { |
299 | { |
181 | unsigned int retval; |
300 | unsigned int retval; |
182 | |
301 | |
183 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
302 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
184 | retval = started; |
303 | retval = started; |
… | |
… | |
191 | * a somewhat faster data structure might be nice, but |
310 | * a somewhat faster data structure might be nice, but |
192 | * with 8 priorities this actually needs <20 insns |
311 | * with 8 priorities this actually needs <20 insns |
193 | * per shift, the most expensive operation. |
312 | * per shift, the most expensive operation. |
194 | */ |
313 | */ |
195 | typedef struct { |
314 | typedef struct { |
196 | eio_req *qs[EIO_NUM_PRI], *qe[EIO_NUM_PRI]; /* qstart, qend */ |
315 | ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */ |
197 | int size; |
316 | int size; |
198 | } reqq; |
317 | } etp_reqq; |
199 | |
318 | |
200 | static reqq req_queue; |
319 | static etp_reqq req_queue; |
201 | static reqq res_queue; |
320 | static etp_reqq res_queue; |
202 | |
321 | |
203 | static int reqq_push (reqq *q, eio_req *req) |
322 | static int reqq_push (etp_reqq *q, ETP_REQ *req) |
204 | { |
323 | { |
205 | int pri = req->pri; |
324 | int pri = req->pri; |
206 | req->next = 0; |
325 | req->next = 0; |
207 | |
326 | |
208 | if (q->qe[pri]) |
327 | if (q->qe[pri]) |
… | |
… | |
214 | q->qe[pri] = q->qs[pri] = req; |
333 | q->qe[pri] = q->qs[pri] = req; |
215 | |
334 | |
216 | return q->size++; |
335 | return q->size++; |
217 | } |
336 | } |
218 | |
337 | |
219 | static eio_req *reqq_shift (reqq *q) |
338 | static ETP_REQ *reqq_shift (etp_reqq *q) |
220 | { |
339 | { |
221 | int pri; |
340 | int pri; |
222 | |
341 | |
223 | if (!q->size) |
342 | if (!q->size) |
224 | return 0; |
343 | return 0; |
225 | |
344 | |
226 | --q->size; |
345 | --q->size; |
227 | |
346 | |
228 | for (pri = EIO_NUM_PRI; pri--; ) |
347 | for (pri = ETP_NUM_PRI; pri--; ) |
229 | { |
348 | { |
230 | eio_req *req = q->qs[pri]; |
349 | eio_req *req = q->qs[pri]; |
231 | |
350 | |
232 | if (req) |
351 | if (req) |
233 | { |
352 | { |
… | |
… | |
239 | } |
358 | } |
240 | |
359 | |
241 | abort (); |
360 | abort (); |
242 | } |
361 | } |
243 | |
362 | |
244 | static void grp_try_feed (eio_req *grp) |
363 | static void etp_atfork_prepare (void) |
245 | { |
364 | { |
246 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
365 | X_LOCK (wrklock); |
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366 | X_LOCK (reqlock); |
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367 | X_LOCK (reslock); |
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368 | #if !HAVE_PREADWRITE |
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369 | X_LOCK (preadwritelock); |
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370 | #endif |
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371 | } |
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372 | |
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373 | static void etp_atfork_parent (void) |
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374 | { |
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375 | #if !HAVE_PREADWRITE |
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376 | X_UNLOCK (preadwritelock); |
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377 | #endif |
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378 | X_UNLOCK (reslock); |
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379 | X_UNLOCK (reqlock); |
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380 | X_UNLOCK (wrklock); |
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381 | } |
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382 | |
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383 | static void etp_atfork_child (void) |
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384 | { |
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385 | ETP_REQ *prv; |
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386 | |
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387 | while ((prv = reqq_shift (&req_queue))) |
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388 | ETP_DESTROY (prv); |
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389 | |
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390 | while ((prv = reqq_shift (&res_queue))) |
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391 | ETP_DESTROY (prv); |
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392 | |
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393 | while (wrk_first.next != &wrk_first) |
247 | { |
394 | { |
248 | int old_len = grp->size; |
395 | etp_worker *wrk = wrk_first.next; |
249 | |
396 | |
250 | EIO_FEED (grp); |
397 | if (wrk->req) |
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398 | ETP_DESTROY (wrk->req); |
251 | |
399 | |
252 | /* stop if no progress has been made */ |
400 | etp_worker_clear (wrk); |
253 | if (old_len == grp->size) |
401 | etp_worker_free (wrk); |
254 | { |
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255 | grp->feed = 0; |
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256 | break; |
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257 | } |
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258 | } |
402 | } |
259 | } |
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260 | |
403 | |
261 | static int eio_finish (eio_req *req); |
404 | started = 0; |
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405 | idle = 0; |
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406 | nreqs = 0; |
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407 | nready = 0; |
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408 | npending = 0; |
262 | |
409 | |
263 | static int grp_dec (eio_req *grp) |
410 | etp_atfork_parent (); |
264 | { |
411 | } |
265 | --grp->size; |
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266 | |
412 | |
267 | /* call feeder, if applicable */ |
413 | static void |
268 | grp_try_feed (grp); |
414 | etp_once_init (void) |
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415 | { |
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416 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
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417 | } |
269 | |
418 | |
270 | /* finish, if done */ |
419 | static int |
271 | if (!grp->size && grp->int1) |
420 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
272 | return eio_finish (grp); |
421 | { |
273 | else |
422 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
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423 | |
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424 | pthread_once (&doinit, etp_once_init); |
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425 | |
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426 | want_poll_cb = want_poll; |
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427 | done_poll_cb = done_poll; |
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428 | |
274 | return 0; |
429 | return 0; |
275 | } |
430 | } |
276 | |
431 | |
277 | void eio_destroy (eio_req *req) |
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278 | { |
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279 | if ((req)->flags & EIO_FLAG_PTR2_FREE) |
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280 | free (req->ptr2); |
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281 | |
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282 | EIO_DESTROY (req); |
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283 | } |
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284 | |
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285 | static int eio_finish (eio_req *req) |
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286 | { |
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287 | int res = EIO_FINISH (req); |
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288 | |
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289 | if (req->grp) |
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290 | { |
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291 | int res2; |
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292 | eio_req *grp = req->grp; |
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293 | |
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294 | /* unlink request */ |
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295 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
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296 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
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297 | |
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298 | if (grp->grp_first == req) |
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299 | grp->grp_first = req->grp_next; |
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300 | |
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301 | res2 = grp_dec (grp); |
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302 | |
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303 | if (!res && res2) |
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304 | res = res2; |
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305 | } |
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306 | |
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307 | eio_destroy (req); |
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308 | |
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309 | return res; |
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310 | } |
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311 | |
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312 | void eio_grp_cancel (eio_req *grp) |
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313 | { |
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314 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
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315 | eio_cancel (grp); |
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316 | } |
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317 | |
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318 | void eio_cancel (eio_req *req) |
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319 | { |
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320 | req->flags |= EIO_FLAG_CANCELLED; |
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321 | |
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322 | eio_grp_cancel (req); |
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323 | } |
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324 | |
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325 | X_THREAD_PROC (eio_proc); |
432 | X_THREAD_PROC (etp_proc); |
326 | |
433 | |
327 | static void start_thread (void) |
434 | static void etp_start_thread (void) |
328 | { |
435 | { |
329 | worker *wrk = calloc (1, sizeof (worker)); |
436 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
330 | |
437 | |
331 | if (!wrk) |
438 | /*TODO*/ |
332 | croak ("unable to allocate worker thread data"); |
439 | assert (("unable to allocate worker thread data", wrk)); |
333 | |
440 | |
334 | X_LOCK (wrklock); |
441 | X_LOCK (wrklock); |
335 | |
442 | |
336 | if (thread_create (&wrk->tid, eio_proc, (void *)wrk)) |
443 | if (thread_create (&wrk->tid, etp_proc, (void *)wrk)) |
337 | { |
444 | { |
338 | wrk->prev = &wrk_first; |
445 | wrk->prev = &wrk_first; |
339 | wrk->next = wrk_first.next; |
446 | wrk->next = wrk_first.next; |
340 | wrk_first.next->prev = wrk; |
447 | wrk_first.next->prev = wrk; |
341 | wrk_first.next = wrk; |
448 | wrk_first.next = wrk; |
… | |
… | |
345 | free (wrk); |
452 | free (wrk); |
346 | |
453 | |
347 | X_UNLOCK (wrklock); |
454 | X_UNLOCK (wrklock); |
348 | } |
455 | } |
349 | |
456 | |
350 | static void maybe_start_thread (void) |
457 | static void etp_maybe_start_thread (void) |
351 | { |
458 | { |
352 | if (eio_nthreads () >= wanted) |
459 | if (expect_true (etp_nthreads () >= wanted)) |
353 | return; |
460 | return; |
354 | |
461 | |
355 | /* todo: maybe use idle here, but might be less exact */ |
462 | /* todo: maybe use idle here, but might be less exact */ |
356 | if (0 <= (int)eio_nthreads () + (int)eio_npending () - (int)eio_nreqs ()) |
463 | if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
357 | return; |
464 | return; |
358 | |
465 | |
359 | start_thread (); |
466 | etp_start_thread (); |
360 | } |
467 | } |
361 | |
468 | |
362 | void eio_submit (eio_req *req) |
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363 | { |
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364 | ++nreqs; |
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365 | |
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366 | X_LOCK (reqlock); |
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367 | ++nready; |
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368 | reqq_push (&req_queue, req); |
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369 | X_COND_SIGNAL (reqwait); |
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370 | X_UNLOCK (reqlock); |
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371 | |
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372 | maybe_start_thread (); |
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373 | } |
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374 | |
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375 | static void end_thread (void) |
469 | static void etp_end_thread (void) |
376 | { |
470 | { |
377 | eio_req *req = calloc (1, sizeof (eio_req)); |
471 | eio_req *req = calloc (1, sizeof (eio_req)); |
378 | |
472 | |
379 | req->type = EIO_QUIT; |
473 | req->type = -1; |
380 | req->pri = EIO_PRI_MAX + EIO_PRI_BIAS; |
474 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
381 | |
475 | |
382 | X_LOCK (reqlock); |
476 | X_LOCK (reqlock); |
383 | reqq_push (&req_queue, req); |
477 | reqq_push (&req_queue, req); |
384 | X_COND_SIGNAL (reqwait); |
478 | X_COND_SIGNAL (reqwait); |
385 | X_UNLOCK (reqlock); |
479 | X_UNLOCK (reqlock); |
… | |
… | |
387 | X_LOCK (wrklock); |
481 | X_LOCK (wrklock); |
388 | --started; |
482 | --started; |
389 | X_UNLOCK (wrklock); |
483 | X_UNLOCK (wrklock); |
390 | } |
484 | } |
391 | |
485 | |
392 | void eio_set_max_poll_time (double nseconds) |
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393 | { |
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394 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
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395 | max_poll_time = nseconds; |
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396 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
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397 | } |
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398 | |
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399 | void eio_set_max_poll_reqs (unsigned int maxreqs) |
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400 | { |
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401 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
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402 | max_poll_reqs = maxreqs; |
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403 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
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404 | } |
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405 | |
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406 | void eio_set_max_idle (unsigned int nthreads) |
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407 | { |
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408 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
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409 | max_idle = nthreads <= 0 ? 1 : nthreads; |
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410 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
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411 | } |
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412 | |
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413 | void eio_set_min_parallel (unsigned int nthreads) |
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414 | { |
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415 | if (wanted < nthreads) |
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416 | wanted = nthreads; |
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417 | } |
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418 | |
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419 | void eio_set_max_parallel (unsigned int nthreads) |
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420 | { |
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421 | if (wanted > nthreads) |
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422 | wanted = nthreads; |
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423 | |
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424 | while (started > wanted) |
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425 | end_thread (); |
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426 | } |
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427 | |
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428 | int eio_poll (void) |
486 | static int etp_poll (void) |
429 | { |
487 | { |
430 | int maxreqs = max_poll_reqs; |
488 | unsigned int maxreqs; |
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489 | unsigned int maxtime; |
431 | struct timeval tv_start, tv_now; |
490 | struct timeval tv_start, tv_now; |
432 | eio_req *req; |
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433 | |
491 | |
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492 | X_LOCK (reslock); |
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493 | maxreqs = max_poll_reqs; |
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494 | maxtime = max_poll_time; |
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495 | X_UNLOCK (reslock); |
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496 | |
434 | if (max_poll_time) |
497 | if (maxtime) |
435 | gettimeofday (&tv_start, 0); |
498 | gettimeofday (&tv_start, 0); |
436 | |
499 | |
437 | for (;;) |
500 | for (;;) |
438 | { |
501 | { |
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502 | ETP_REQ *req; |
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503 | |
439 | maybe_start_thread (); |
504 | etp_maybe_start_thread (); |
440 | |
505 | |
441 | X_LOCK (reslock); |
506 | X_LOCK (reslock); |
442 | req = reqq_shift (&res_queue); |
507 | req = reqq_shift (&res_queue); |
443 | |
508 | |
444 | if (req) |
509 | if (req) |
… | |
… | |
452 | X_UNLOCK (reslock); |
517 | X_UNLOCK (reslock); |
453 | |
518 | |
454 | if (!req) |
519 | if (!req) |
455 | return 0; |
520 | return 0; |
456 | |
521 | |
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522 | X_LOCK (reqlock); |
457 | --nreqs; |
523 | --nreqs; |
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524 | X_UNLOCK (reqlock); |
458 | |
525 | |
459 | if (req->type == EIO_GROUP && req->size) |
526 | if (expect_false (req->type == EIO_GROUP && req->size)) |
460 | { |
527 | { |
461 | req->int1 = 1; /* mark request as delayed */ |
528 | req->int1 = 1; /* mark request as delayed */ |
462 | continue; |
529 | continue; |
463 | } |
530 | } |
464 | else |
531 | else |
465 | { |
532 | { |
466 | int res = eio_finish (req); |
533 | int res = ETP_FINISH (req); |
467 | if (res) |
534 | if (expect_false (res)) |
468 | return res; |
535 | return res; |
469 | } |
536 | } |
470 | |
537 | |
471 | if (maxreqs && !--maxreqs) |
538 | if (expect_false (maxreqs && !--maxreqs)) |
472 | break; |
539 | break; |
473 | |
540 | |
474 | if (max_poll_time) |
541 | if (maxtime) |
475 | { |
542 | { |
476 | gettimeofday (&tv_now, 0); |
543 | gettimeofday (&tv_now, 0); |
477 | |
544 | |
478 | if (tvdiff (&tv_start, &tv_now) >= max_poll_time) |
545 | if (tvdiff (&tv_start, &tv_now) >= maxtime) |
479 | break; |
546 | break; |
480 | } |
547 | } |
481 | } |
548 | } |
482 | |
549 | |
483 | errno = EAGAIN; |
550 | errno = EAGAIN; |
484 | return -1; |
551 | return -1; |
485 | } |
552 | } |
486 | |
553 | |
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554 | static void etp_cancel (ETP_REQ *req) |
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555 | { |
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556 | X_LOCK (wrklock); |
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557 | req->flags |= EIO_FLAG_CANCELLED; |
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558 | X_UNLOCK (wrklock); |
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559 | |
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560 | eio_grp_cancel (req); |
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561 | } |
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562 | |
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563 | static void etp_submit (ETP_REQ *req) |
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564 | { |
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565 | req->pri -= ETP_PRI_MIN; |
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566 | |
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567 | if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
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568 | if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
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569 | |
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570 | if (expect_false (req->type == EIO_GROUP)) |
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571 | { |
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572 | /* I hope this is worth it :/ */ |
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573 | X_LOCK (reqlock); |
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574 | ++nreqs; |
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575 | X_UNLOCK (reqlock); |
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576 | |
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577 | X_LOCK (reslock); |
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578 | |
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579 | ++npending; |
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580 | |
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581 | if (!reqq_push (&res_queue, req) && want_poll_cb) |
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582 | want_poll_cb (); |
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583 | |
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584 | X_UNLOCK (reslock); |
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585 | } |
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586 | else |
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587 | { |
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588 | X_LOCK (reqlock); |
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589 | ++nreqs; |
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590 | ++nready; |
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591 | reqq_push (&req_queue, req); |
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592 | X_COND_SIGNAL (reqwait); |
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593 | X_UNLOCK (reqlock); |
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594 | |
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595 | etp_maybe_start_thread (); |
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596 | } |
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597 | } |
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598 | |
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599 | static void etp_set_max_poll_time (double nseconds) |
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600 | { |
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601 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
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602 | max_poll_time = nseconds; |
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603 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
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604 | } |
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605 | |
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606 | static void etp_set_max_poll_reqs (unsigned int maxreqs) |
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607 | { |
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608 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
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609 | max_poll_reqs = maxreqs; |
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610 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
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611 | } |
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612 | |
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613 | static void etp_set_max_idle (unsigned int nthreads) |
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614 | { |
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615 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
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616 | max_idle = nthreads <= 0 ? 1 : nthreads; |
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617 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
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618 | } |
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619 | |
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620 | static void etp_set_min_parallel (unsigned int nthreads) |
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621 | { |
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622 | if (wanted < nthreads) |
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623 | wanted = nthreads; |
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624 | } |
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625 | |
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626 | static void etp_set_max_parallel (unsigned int nthreads) |
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627 | { |
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628 | if (wanted > nthreads) |
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629 | wanted = nthreads; |
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630 | |
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631 | while (started > wanted) |
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632 | etp_end_thread (); |
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633 | } |
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634 | |
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635 | /*****************************************************************************/ |
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636 | |
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637 | static void grp_try_feed (eio_req *grp) |
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638 | { |
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639 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
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640 | { |
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641 | grp->flags &= ~EIO_FLAG_GROUPADD; |
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642 | |
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643 | EIO_FEED (grp); |
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644 | |
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645 | /* stop if no progress has been made */ |
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646 | if (!(grp->flags & EIO_FLAG_GROUPADD)) |
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647 | { |
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648 | grp->feed = 0; |
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649 | break; |
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650 | } |
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651 | } |
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652 | } |
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653 | |
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654 | static int grp_dec (eio_req *grp) |
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655 | { |
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656 | --grp->size; |
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657 | |
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658 | /* call feeder, if applicable */ |
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659 | grp_try_feed (grp); |
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660 | |
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661 | /* finish, if done */ |
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662 | if (!grp->size && grp->int1) |
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663 | return eio_finish (grp); |
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664 | else |
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665 | return 0; |
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666 | } |
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667 | |
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668 | void eio_destroy (eio_req *req) |
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669 | { |
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670 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
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671 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
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672 | |
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673 | EIO_DESTROY (req); |
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674 | } |
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675 | |
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676 | static int eio_finish (eio_req *req) |
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677 | { |
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678 | int res = EIO_FINISH (req); |
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679 | |
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680 | if (req->grp) |
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681 | { |
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682 | int res2; |
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683 | eio_req *grp = req->grp; |
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684 | |
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685 | /* unlink request */ |
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686 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
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687 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
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688 | |
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689 | if (grp->grp_first == req) |
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690 | grp->grp_first = req->grp_next; |
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691 | |
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692 | res2 = grp_dec (grp); |
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693 | |
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694 | if (!res && res2) |
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695 | res = res2; |
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696 | } |
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697 | |
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698 | eio_destroy (req); |
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699 | |
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700 | return res; |
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701 | } |
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702 | |
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703 | void eio_grp_cancel (eio_req *grp) |
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704 | { |
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705 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
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706 | eio_cancel (grp); |
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707 | } |
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708 | |
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709 | void eio_cancel (eio_req *req) |
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710 | { |
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711 | etp_cancel (req); |
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712 | } |
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713 | |
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714 | void eio_submit (eio_req *req) |
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715 | { |
|
|
716 | etp_submit (req); |
|
|
717 | } |
|
|
718 | |
|
|
719 | unsigned int eio_nreqs (void) |
|
|
720 | { |
|
|
721 | return etp_nreqs (); |
|
|
722 | } |
|
|
723 | |
|
|
724 | unsigned int eio_nready (void) |
|
|
725 | { |
|
|
726 | return etp_nready (); |
|
|
727 | } |
|
|
728 | |
|
|
729 | unsigned int eio_npending (void) |
|
|
730 | { |
|
|
731 | return etp_npending (); |
|
|
732 | } |
|
|
733 | |
|
|
734 | unsigned int eio_nthreads (void) |
|
|
735 | { |
|
|
736 | return etp_nthreads (); |
|
|
737 | } |
|
|
738 | |
|
|
739 | void eio_set_max_poll_time (double nseconds) |
|
|
740 | { |
|
|
741 | etp_set_max_poll_time (nseconds); |
|
|
742 | } |
|
|
743 | |
|
|
744 | void eio_set_max_poll_reqs (unsigned int maxreqs) |
|
|
745 | { |
|
|
746 | etp_set_max_poll_reqs (maxreqs); |
|
|
747 | } |
|
|
748 | |
|
|
749 | void eio_set_max_idle (unsigned int nthreads) |
|
|
750 | { |
|
|
751 | etp_set_max_idle (nthreads); |
|
|
752 | } |
|
|
753 | |
|
|
754 | void eio_set_min_parallel (unsigned int nthreads) |
|
|
755 | { |
|
|
756 | etp_set_min_parallel (nthreads); |
|
|
757 | } |
|
|
758 | |
|
|
759 | void eio_set_max_parallel (unsigned int nthreads) |
|
|
760 | { |
|
|
761 | etp_set_max_parallel (nthreads); |
|
|
762 | } |
|
|
763 | |
|
|
764 | int eio_poll (void) |
|
|
765 | { |
|
|
766 | return etp_poll (); |
|
|
767 | } |
|
|
768 | |
487 | /*****************************************************************************/ |
769 | /*****************************************************************************/ |
488 | /* work around various missing functions */ |
770 | /* work around various missing functions */ |
489 | |
771 | |
490 | #if !HAVE_PREADWRITE |
772 | #if !HAVE_PREADWRITE |
|
|
773 | # undef pread |
|
|
774 | # undef pwrite |
491 | # define pread aio_pread |
775 | # define pread eio__pread |
492 | # define pwrite aio_pwrite |
776 | # define pwrite eio__pwrite |
493 | |
777 | |
494 | /* |
778 | static ssize_t |
495 | * make our pread/pwrite safe against themselves, but not against |
779 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
496 | * normal read/write by using a mutex. slows down execution a lot, |
|
|
497 | * but that's your problem, not mine. |
|
|
498 | */ |
|
|
499 | static mutex_t preadwritelock = X_MUTEX_INIT; |
|
|
500 | |
|
|
501 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
|
|
502 | { |
780 | { |
503 | ssize_t res; |
781 | ssize_t res; |
504 | off_t ooffset; |
782 | off_t ooffset; |
505 | |
783 | |
506 | X_LOCK (preadwritelock); |
784 | X_LOCK (preadwritelock); |
… | |
… | |
511 | X_UNLOCK (preadwritelock); |
789 | X_UNLOCK (preadwritelock); |
512 | |
790 | |
513 | return res; |
791 | return res; |
514 | } |
792 | } |
515 | |
793 | |
516 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
794 | static ssize_t |
|
|
795 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
517 | { |
796 | { |
518 | ssize_t res; |
797 | ssize_t res; |
519 | off_t ooffset; |
798 | off_t ooffset; |
520 | |
799 | |
521 | X_LOCK (preadwritelock); |
800 | X_LOCK (preadwritelock); |
522 | ooffset = lseek (fd, 0, SEEK_CUR); |
801 | ooffset = lseek (fd, 0, SEEK_CUR); |
523 | lseek (fd, offset, SEEK_SET); |
802 | lseek (fd, offset, SEEK_SET); |
524 | res = write (fd, buf, count); |
803 | res = write (fd, buf, count); |
525 | lseek (fd, offset, SEEK_SET); |
804 | lseek (fd, ooffset, SEEK_SET); |
526 | X_UNLOCK (preadwritelock); |
805 | X_UNLOCK (preadwritelock); |
527 | |
806 | |
528 | return res; |
807 | return res; |
529 | } |
808 | } |
530 | #endif |
809 | #endif |
531 | |
810 | |
532 | #ifndef HAVE_FUTIMES |
811 | #ifndef HAVE_FUTIMES |
533 | |
812 | |
|
|
813 | # undef utimes |
|
|
814 | # undef futimes |
534 | # define utimes(path,times) aio_utimes (path, times) |
815 | # define utimes(path,times) eio__utimes (path, times) |
535 | # define futimes(fd,times) aio_futimes (fd, times) |
816 | # define futimes(fd,times) eio__futimes (fd, times) |
536 | |
817 | |
|
|
818 | static int |
537 | static int aio_utimes (const char *filename, const struct timeval times[2]) |
819 | eio__utimes (const char *filename, const struct timeval times[2]) |
538 | { |
820 | { |
539 | if (times) |
821 | if (times) |
540 | { |
822 | { |
541 | struct utimbuf buf; |
823 | struct utimbuf buf; |
542 | |
824 | |
… | |
… | |
547 | } |
829 | } |
548 | else |
830 | else |
549 | return utime (filename, 0); |
831 | return utime (filename, 0); |
550 | } |
832 | } |
551 | |
833 | |
552 | static int aio_futimes (int fd, const struct timeval tv[2]) |
834 | static int eio__futimes (int fd, const struct timeval tv[2]) |
553 | { |
835 | { |
554 | errno = ENOSYS; |
836 | errno = ENOSYS; |
555 | return -1; |
837 | return -1; |
556 | } |
838 | } |
557 | |
839 | |
558 | #endif |
840 | #endif |
559 | |
841 | |
560 | #if !HAVE_FDATASYNC |
842 | #if !HAVE_FDATASYNC |
|
|
843 | # undef fdatasync |
561 | # define fdatasync fsync |
844 | # define fdatasync(fd) fsync (fd) |
562 | #endif |
845 | #endif |
|
|
846 | |
|
|
847 | /* sync_file_range always needs emulation */ |
|
|
848 | int |
|
|
849 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
|
|
850 | { |
|
|
851 | #if HAVE_SYNC_FILE_RANGE |
|
|
852 | int res; |
|
|
853 | |
|
|
854 | if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE |
|
|
855 | || EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE |
|
|
856 | || EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER) |
|
|
857 | { |
|
|
858 | flags = 0 |
|
|
859 | | (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0) |
|
|
860 | | (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0) |
|
|
861 | | (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0); |
|
|
862 | } |
|
|
863 | |
|
|
864 | res = sync_file_range (fd, offset, nbytes, flags); |
|
|
865 | |
|
|
866 | if (!res || errno != ENOSYS) |
|
|
867 | return res; |
|
|
868 | #endif |
|
|
869 | |
|
|
870 | /* even though we could play tricks with the flags, it's better to always |
|
|
871 | * call fdatasync, as thta matches the expectation of it's users best */ |
|
|
872 | return fdatasync (fd); |
|
|
873 | } |
563 | |
874 | |
564 | #if !HAVE_READAHEAD |
875 | #if !HAVE_READAHEAD |
|
|
876 | # undef readahead |
565 | # define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) |
877 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
566 | |
878 | |
|
|
879 | static ssize_t |
567 | static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) |
880 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
568 | { |
881 | { |
569 | size_t todo = count; |
882 | size_t todo = count; |
570 | dBUF; |
883 | dBUF; |
571 | |
884 | |
572 | while (todo > 0) |
885 | while (todo > 0) |
573 | { |
886 | { |
574 | size_t len = todo < EIO_BUFSIZE ? todo : EIO_BUFSIZE; |
887 | size_t len = todo < EIO_BUFSIZE ? todo : EIO_BUFSIZE; |
575 | |
888 | |
576 | pread (fd, aio_buf, len, offset); |
889 | pread (fd, eio_buf, len, offset); |
577 | offset += len; |
890 | offset += len; |
578 | todo -= len; |
891 | todo -= len; |
579 | } |
892 | } |
580 | |
893 | |
581 | errno = 0; |
894 | errno = 0; |
582 | return count; |
895 | return count; |
583 | } |
896 | } |
584 | |
897 | |
585 | #endif |
898 | #endif |
586 | |
899 | |
587 | #if !HAVE_READDIR_R |
|
|
588 | # define readdir_r aio_readdir_r |
|
|
589 | |
|
|
590 | static mutex_t readdirlock = X_MUTEX_INIT; |
|
|
591 | |
|
|
592 | static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res) |
|
|
593 | { |
|
|
594 | X_DIRENT *e; |
|
|
595 | int errorno; |
|
|
596 | |
|
|
597 | X_LOCK (readdirlock); |
|
|
598 | |
|
|
599 | e = readdir (dirp); |
|
|
600 | errorno = errno; |
|
|
601 | |
|
|
602 | if (e) |
|
|
603 | { |
|
|
604 | *res = ent; |
|
|
605 | strcpy (ent->d_name, e->d_name); |
|
|
606 | } |
|
|
607 | else |
|
|
608 | *res = 0; |
|
|
609 | |
|
|
610 | X_UNLOCK (readdirlock); |
|
|
611 | |
|
|
612 | errno = errorno; |
|
|
613 | return e ? 0 : -1; |
|
|
614 | } |
|
|
615 | #endif |
|
|
616 | |
|
|
617 | /* sendfile always needs emulation */ |
900 | /* sendfile always needs emulation */ |
|
|
901 | static ssize_t |
618 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) |
902 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
619 | { |
903 | { |
620 | ssize_t res; |
904 | ssize_t res; |
621 | |
905 | |
622 | if (!count) |
906 | if (!count) |
623 | return 0; |
907 | return 0; |
… | |
… | |
705 | } |
989 | } |
706 | |
990 | |
707 | return res; |
991 | return res; |
708 | } |
992 | } |
709 | |
993 | |
|
|
994 | static int |
|
|
995 | eio_dent_cmp (const void *a_, const void *b_) |
|
|
996 | { |
|
|
997 | const eio_dirent *a = (const eio_dirent *)a_; |
|
|
998 | const eio_dirent *b = (const eio_dirent *)b_; |
|
|
999 | |
|
|
1000 | return (int)b->score - (int)a->score ? (int)b->score - (int)a->score |
|
|
1001 | : a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0; /* int might be < ino_t */ |
|
|
1002 | } |
|
|
1003 | |
710 | /* read a full directory */ |
1004 | /* read a full directory */ |
|
|
1005 | static void |
711 | static void scandir_ (eio_req *req, worker *self) |
1006 | eio__scandir (eio_req *req, etp_worker *self) |
712 | { |
1007 | { |
713 | DIR *dirp; |
1008 | DIR *dirp; |
714 | union |
|
|
715 | { |
|
|
716 | EIO_STRUCT_DIRENT d; |
|
|
717 | char b [offsetof (EIO_STRUCT_DIRENT, d_name) + NAME_MAX + 1]; |
|
|
718 | } *u; |
|
|
719 | EIO_STRUCT_DIRENT *entp; |
1009 | EIO_STRUCT_DIRENT *entp; |
720 | char *name, *names; |
1010 | unsigned char *name, *names; |
721 | int memlen = 4096; |
1011 | int namesalloc = 4096; |
722 | int memofs = 0; |
1012 | int namesoffs = 0; |
|
|
1013 | int flags = req->int1; |
|
|
1014 | eio_dirent *dents = 0; |
|
|
1015 | int dentalloc = 128; |
723 | int res = 0; |
1016 | int dentoffs = 0; |
|
|
1017 | |
|
|
1018 | req->result = -1; |
|
|
1019 | |
|
|
1020 | if (!(flags & EIO_READDIR_DENTS)) |
|
|
1021 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
724 | |
1022 | |
725 | X_LOCK (wrklock); |
1023 | X_LOCK (wrklock); |
|
|
1024 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
726 | self->dirp = dirp = opendir (req->ptr1); |
1025 | self->dirp = dirp = opendir (req->ptr1); |
727 | self->dbuf = u = malloc (sizeof (*u)); |
|
|
728 | req->flags |= EIO_FLAG_PTR2_FREE; |
1026 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
729 | req->ptr2 = names = malloc (memlen); |
1027 | req->ptr1 = names = malloc (namesalloc); |
|
|
1028 | req->ptr2 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
730 | X_UNLOCK (wrklock); |
1029 | X_UNLOCK (wrklock); |
731 | |
1030 | |
732 | if (dirp && u && names) |
1031 | if (dirp && names && (!flags || dents)) |
733 | for (;;) |
1032 | for (;;) |
734 | { |
1033 | { |
735 | errno = 0; |
1034 | errno = 0; |
736 | readdir_r (dirp, &u->d, &entp); |
1035 | entp = readdir (dirp); |
737 | |
1036 | |
738 | if (!entp) |
1037 | if (!entp) |
|
|
1038 | { |
|
|
1039 | if (errno) |
|
|
1040 | break; |
|
|
1041 | |
|
|
1042 | /* sort etc. */ |
|
|
1043 | req->int1 = flags; |
|
|
1044 | req->result = dentoffs; |
|
|
1045 | |
|
|
1046 | if (dents) |
|
|
1047 | { |
|
|
1048 | eio_dirent *ent = dents + dentoffs; |
|
|
1049 | |
|
|
1050 | while (ent > dents) |
|
|
1051 | (--ent)->name = names + (size_t)ent->name; |
|
|
1052 | } |
|
|
1053 | |
|
|
1054 | if (flags & EIO_READDIR_STAT_ORDER |
|
|
1055 | || !(~flags & (EIO_READDIR_DIRS_FIRST | EIO_READDIR_FOUND_UNKNOWN))) |
|
|
1056 | { |
|
|
1057 | /* pray your qsort doesn't use quicksort */ |
|
|
1058 | qsort (dents, dentoffs, sizeof (*dents), eio_dent_cmp); /* score depends of DIRS_FIRST */ |
|
|
1059 | } |
|
|
1060 | else if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1061 | { |
|
|
1062 | /* in this case, all is known, and we just put dirs first and sort them */ |
|
|
1063 | eio_dirent *ent = dents + dentoffs; |
|
|
1064 | eio_dirent *dir = dents; |
|
|
1065 | |
|
|
1066 | while (ent > dir) |
|
|
1067 | { |
|
|
1068 | if (dir->type == DT_DIR) |
|
|
1069 | ++dir; |
|
|
1070 | else |
|
|
1071 | { |
|
|
1072 | --ent; |
|
|
1073 | |
|
|
1074 | if (ent->type == DT_DIR) |
|
|
1075 | { |
|
|
1076 | eio_dirent tmp = *dir; |
|
|
1077 | *dir = *ent; |
|
|
1078 | *ent = tmp; |
|
|
1079 | |
|
|
1080 | ++dir; |
|
|
1081 | } |
|
|
1082 | } |
|
|
1083 | } |
|
|
1084 | |
|
|
1085 | /* now sort the dirs only */ |
|
|
1086 | qsort (dents, dir - dents, sizeof (*dents), eio_dent_cmp); |
|
|
1087 | } |
|
|
1088 | |
|
|
1089 | /* only provide the names array unless DENTS is specified */ |
|
|
1090 | if (!(flags & EIO_READDIR_DENTS)) |
|
|
1091 | { |
|
|
1092 | X_LOCK (wrklock); |
|
|
1093 | assert (!dents); |
|
|
1094 | req->ptr1 = 0; |
|
|
1095 | req->ptr2 = names; |
|
|
1096 | X_UNLOCK (wrklock); |
|
|
1097 | } |
|
|
1098 | |
739 | break; |
1099 | break; |
|
|
1100 | } |
740 | |
1101 | |
|
|
1102 | /* now add the entry to our list(s) */ |
741 | name = entp->d_name; |
1103 | name = entp->d_name; |
742 | |
1104 | |
|
|
1105 | /* skip . and .. entries */ |
743 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1106 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
744 | { |
1107 | { |
745 | int len = strlen (name) + 1; |
1108 | int len = D_NAMLEN (entp) + 1; |
746 | |
1109 | |
747 | res++; |
1110 | while (expect_false (namesoffs + len > namesalloc)) |
748 | |
|
|
749 | while (memofs + len > memlen) |
|
|
750 | { |
1111 | { |
751 | memlen *= 2; |
1112 | namesalloc *= 2; |
752 | X_LOCK (wrklock); |
1113 | X_LOCK (wrklock); |
753 | req->ptr2 = names = realloc (names, memlen); |
1114 | req->ptr1 = names = realloc (names, namesalloc); |
754 | X_UNLOCK (wrklock); |
1115 | X_UNLOCK (wrklock); |
755 | |
1116 | |
756 | if (!names) |
1117 | if (!names) |
757 | break; |
1118 | break; |
758 | } |
1119 | } |
759 | |
1120 | |
760 | memcpy (names + memofs, name, len); |
1121 | memcpy (names + namesoffs, name, len); |
|
|
1122 | |
|
|
1123 | if (dents) |
|
|
1124 | { |
|
|
1125 | struct eio_dirent *ent; |
|
|
1126 | |
|
|
1127 | if (expect_false (dentoffs == dentalloc)) |
|
|
1128 | { |
|
|
1129 | dentalloc *= 2; |
|
|
1130 | X_LOCK (wrklock); |
|
|
1131 | req->ptr2 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
|
|
1132 | X_UNLOCK (wrklock); |
|
|
1133 | |
|
|
1134 | if (!dents) |
|
|
1135 | break; |
|
|
1136 | } |
|
|
1137 | |
|
|
1138 | ent = dents + dentoffs; |
|
|
1139 | |
|
|
1140 | ent->name = (char *)(size_t)namesoffs; /* rather dirtily we store the offset in the pointer */ |
|
|
1141 | ent->namelen = len - 1; |
|
|
1142 | ent->inode = D_INO (entp); |
|
|
1143 | |
|
|
1144 | switch (D_TYPE (entp)) |
|
|
1145 | { |
|
|
1146 | default: |
|
|
1147 | ent->type = EIO_DT_UNKNOWN; |
|
|
1148 | flags |= EIO_READDIR_FOUND_UNKNOWN; |
|
|
1149 | break; |
|
|
1150 | |
|
|
1151 | #ifdef DT_FIFO |
|
|
1152 | case DT_FIFO: ent->type = EIO_DT_FIFO; break; |
|
|
1153 | #endif |
|
|
1154 | #ifdef DT_CHR |
|
|
1155 | case DT_CHR: ent->type = EIO_DT_CHR; break; |
|
|
1156 | #endif |
|
|
1157 | #ifdef DT_MPC |
|
|
1158 | case DT_MPC: ent->type = EIO_DT_MPC; break; |
|
|
1159 | #endif |
|
|
1160 | #ifdef DT_DIR |
|
|
1161 | case DT_DIR: ent->type = EIO_DT_DIR; break; |
|
|
1162 | #endif |
|
|
1163 | #ifdef DT_NAM |
|
|
1164 | case DT_NAM: ent->type = EIO_DT_NAM; break; |
|
|
1165 | #endif |
|
|
1166 | #ifdef DT_BLK |
|
|
1167 | case DT_BLK: ent->type = EIO_DT_BLK; break; |
|
|
1168 | #endif |
|
|
1169 | #ifdef DT_MPB |
|
|
1170 | case DT_MPB: ent->type = EIO_DT_MPB; break; |
|
|
1171 | #endif |
|
|
1172 | #ifdef DT_REG |
|
|
1173 | case DT_REG: ent->type = EIO_DT_REG; break; |
|
|
1174 | #endif |
|
|
1175 | #ifdef DT_NWK |
|
|
1176 | case DT_NWK: ent->type = EIO_DT_NWK; break; |
|
|
1177 | #endif |
|
|
1178 | #ifdef DT_CMP |
|
|
1179 | case DT_CMP: ent->type = EIO_DT_CMP; break; |
|
|
1180 | #endif |
|
|
1181 | #ifdef DT_LNK |
|
|
1182 | case DT_LNK: ent->type = EIO_DT_LNK; break; |
|
|
1183 | #endif |
|
|
1184 | #ifdef DT_SOCK |
|
|
1185 | case DT_SOCK: ent->type = EIO_DT_SOCK; break; |
|
|
1186 | #endif |
|
|
1187 | #ifdef DT_DOOR |
|
|
1188 | case DT_DOOR: ent->type = EIO_DT_DOOR; break; |
|
|
1189 | #endif |
|
|
1190 | #ifdef DT_WHT |
|
|
1191 | case DT_WHT: ent->type = EIO_DT_WHT; break; |
|
|
1192 | #endif |
|
|
1193 | } |
|
|
1194 | |
|
|
1195 | ent->score = 0; |
|
|
1196 | |
|
|
1197 | if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1198 | { |
|
|
1199 | if (ent->type == EIO_DT_UNKNOWN) |
|
|
1200 | { |
|
|
1201 | if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ |
|
|
1202 | ent->score = 98; |
|
|
1203 | else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */ |
|
|
1204 | ent->score = len <= 2 ? len + 60 : len <= 4 ? 50 : len <= 7 ? 40 : 10; /* shorter == more likely dir, but avoid too many classes */ |
|
|
1205 | } |
|
|
1206 | else if (ent->type == EIO_DT_DIR) |
|
|
1207 | ent->score = 100; |
|
|
1208 | } |
|
|
1209 | } |
|
|
1210 | |
761 | memofs += len; |
1211 | namesoffs += len; |
|
|
1212 | ++dentoffs; |
762 | } |
1213 | } |
763 | } |
1214 | } |
764 | |
1215 | else |
765 | if (errno) |
|
|
766 | res = -1; |
|
|
767 | |
|
|
768 | req->result = res; |
1216 | req->result = -1; |
|
|
1217 | } |
|
|
1218 | |
|
|
1219 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
1220 | # undef msync |
|
|
1221 | # define msync(a,b,c) ((errno = ENOSYS), -1) |
|
|
1222 | #endif |
|
|
1223 | |
|
|
1224 | int |
|
|
1225 | eio__mtouch (void *mem, size_t len, int flags) |
|
|
1226 | { |
|
|
1227 | intptr_t addr = (intptr_t)mem; |
|
|
1228 | intptr_t end = addr + len; |
|
|
1229 | #ifdef PAGESIZE |
|
|
1230 | const intptr_t page = PAGESIZE; |
|
|
1231 | #else |
|
|
1232 | static intptr_t page; |
|
|
1233 | |
|
|
1234 | if (!page) |
|
|
1235 | page = sysconf (_SC_PAGESIZE); |
|
|
1236 | #endif |
|
|
1237 | |
|
|
1238 | addr &= ~(page - 1); /* assume page size is always a power of two */ |
|
|
1239 | |
|
|
1240 | if (addr < end) |
|
|
1241 | if (flags) /* modify */ |
|
|
1242 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); |
|
|
1243 | else |
|
|
1244 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); |
|
|
1245 | |
|
|
1246 | return 0; |
769 | } |
1247 | } |
770 | |
1248 | |
771 | /*****************************************************************************/ |
1249 | /*****************************************************************************/ |
772 | |
1250 | |
|
|
1251 | #define ALLOC(len) \ |
|
|
1252 | if (!req->ptr2) \ |
|
|
1253 | { \ |
|
|
1254 | X_LOCK (wrklock); \ |
|
|
1255 | req->flags |= EIO_FLAG_PTR2_FREE; \ |
|
|
1256 | X_UNLOCK (wrklock); \ |
|
|
1257 | req->ptr2 = malloc (len); \ |
|
|
1258 | if (!req->ptr2) \ |
|
|
1259 | { \ |
|
|
1260 | errno = ENOMEM; \ |
|
|
1261 | req->result = -1; \ |
|
|
1262 | break; \ |
|
|
1263 | } \ |
|
|
1264 | } |
|
|
1265 | |
773 | X_THREAD_PROC (eio_proc) |
1266 | X_THREAD_PROC (etp_proc) |
774 | { |
1267 | { |
775 | eio_req *req; |
1268 | ETP_REQ *req; |
776 | struct timespec ts; |
1269 | struct timespec ts; |
777 | worker *self = (worker *)thr_arg; |
1270 | etp_worker *self = (etp_worker *)thr_arg; |
778 | |
1271 | |
779 | /* try to distribute timeouts somewhat randomly */ |
1272 | /* try to distribute timeouts somewhat randomly */ |
780 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
1273 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
781 | |
1274 | |
782 | for (;;) |
1275 | for (;;) |
783 | { |
1276 | { |
784 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
|
|
785 | |
|
|
786 | X_LOCK (reqlock); |
1277 | X_LOCK (reqlock); |
787 | |
1278 | |
788 | for (;;) |
1279 | for (;;) |
789 | { |
1280 | { |
790 | self->req = req = reqq_shift (&req_queue); |
1281 | self->req = req = reqq_shift (&req_queue); |
… | |
… | |
792 | if (req) |
1283 | if (req) |
793 | break; |
1284 | break; |
794 | |
1285 | |
795 | ++idle; |
1286 | ++idle; |
796 | |
1287 | |
|
|
1288 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
797 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1289 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
798 | { |
1290 | { |
799 | if (idle > max_idle) |
1291 | if (idle > max_idle) |
800 | { |
1292 | { |
801 | --idle; |
1293 | --idle; |
… | |
… | |
806 | goto quit; |
1298 | goto quit; |
807 | } |
1299 | } |
808 | |
1300 | |
809 | /* we are allowed to idle, so do so without any timeout */ |
1301 | /* we are allowed to idle, so do so without any timeout */ |
810 | X_COND_WAIT (reqwait, reqlock); |
1302 | X_COND_WAIT (reqwait, reqlock); |
811 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
|
|
812 | } |
1303 | } |
813 | |
1304 | |
814 | --idle; |
1305 | --idle; |
815 | } |
1306 | } |
816 | |
1307 | |
817 | --nready; |
1308 | --nready; |
818 | |
1309 | |
819 | X_UNLOCK (reqlock); |
1310 | X_UNLOCK (reqlock); |
820 | |
1311 | |
821 | errno = 0; /* strictly unnecessary */ |
1312 | if (req->type < 0) |
|
|
1313 | goto quit; |
822 | |
1314 | |
823 | if (!EIO_CANCELLED (req)) |
1315 | if (!EIO_CANCELLED (req)) |
824 | switch (req->type) |
1316 | ETP_EXECUTE (self, req); |
825 | { |
|
|
826 | case EIO_READ: req->result = req->offs >= 0 |
|
|
827 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
|
|
828 | : read (req->int1, req->ptr2, req->size); break; |
|
|
829 | case EIO_WRITE: req->result = req->offs >= 0 |
|
|
830 | ? pwrite (req->int1, req->ptr2, req->size, req->offs) |
|
|
831 | : write (req->int1, req->ptr2, req->size); break; |
|
|
832 | |
|
|
833 | case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
|
|
834 | case EIO_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break; |
|
|
835 | |
|
|
836 | case EIO_STAT: req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
837 | case EIO_LSTAT: req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
838 | case EIO_FSTAT: req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
839 | |
|
|
840 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
|
|
841 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
|
|
842 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
|
|
843 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
|
|
844 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
|
|
845 | case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; |
|
|
846 | |
|
|
847 | case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break; |
|
|
848 | case EIO_CLOSE: req->result = close (req->int1); break; |
|
|
849 | case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; |
|
|
850 | case EIO_UNLINK: req->result = unlink (req->ptr1); break; |
|
|
851 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
|
|
852 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
|
|
853 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
|
|
854 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
|
|
855 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
|
|
856 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
|
|
857 | case EIO_READLINK: req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
|
|
858 | |
|
|
859 | case EIO_SYNC: req->result = 0; sync (); break; |
|
|
860 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
|
|
861 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
|
|
862 | |
|
|
863 | case EIO_READDIR: scandir_ (req, self); break; |
|
|
864 | |
|
|
865 | case EIO_BUSY: |
|
|
866 | #ifdef _WIN32 |
|
|
867 | Sleep (req->nv1 * 1000.); |
|
|
868 | #else |
|
|
869 | { |
|
|
870 | struct timeval tv; |
|
|
871 | |
|
|
872 | tv.tv_sec = req->nv1; |
|
|
873 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; |
|
|
874 | |
|
|
875 | req->result = select (0, 0, 0, 0, &tv); |
|
|
876 | } |
|
|
877 | #endif |
|
|
878 | break; |
|
|
879 | |
|
|
880 | case EIO_UTIME: |
|
|
881 | case EIO_FUTIME: |
|
|
882 | { |
|
|
883 | struct timeval tv[2]; |
|
|
884 | struct timeval *times; |
|
|
885 | |
|
|
886 | if (req->nv1 != -1. || req->nv2 != -1.) |
|
|
887 | { |
|
|
888 | tv[0].tv_sec = req->nv1; |
|
|
889 | tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.; |
|
|
890 | tv[1].tv_sec = req->nv2; |
|
|
891 | tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.; |
|
|
892 | |
|
|
893 | times = tv; |
|
|
894 | } |
|
|
895 | else |
|
|
896 | times = 0; |
|
|
897 | |
|
|
898 | |
|
|
899 | req->result = req->type == EIO_FUTIME |
|
|
900 | ? futimes (req->int1, times) |
|
|
901 | : utimes (req->ptr1, times); |
|
|
902 | } |
|
|
903 | |
|
|
904 | case EIO_GROUP: |
|
|
905 | case EIO_NOP: |
|
|
906 | break; |
|
|
907 | |
|
|
908 | case EIO_QUIT: |
|
|
909 | goto quit; |
|
|
910 | |
|
|
911 | default: |
|
|
912 | req->result = -1; |
|
|
913 | break; |
|
|
914 | } |
|
|
915 | |
|
|
916 | req->errorno = errno; |
|
|
917 | |
1317 | |
918 | X_LOCK (reslock); |
1318 | X_LOCK (reslock); |
919 | |
1319 | |
920 | ++npending; |
1320 | ++npending; |
921 | |
1321 | |
922 | if (!reqq_push (&res_queue, req) && want_poll_cb) |
1322 | if (!reqq_push (&res_queue, req) && want_poll_cb) |
923 | want_poll_cb (); |
1323 | want_poll_cb (); |
924 | |
1324 | |
925 | self->req = 0; |
1325 | self->req = 0; |
926 | worker_clear (self); |
1326 | etp_worker_clear (self); |
927 | |
1327 | |
928 | X_UNLOCK (reslock); |
1328 | X_UNLOCK (reslock); |
929 | } |
1329 | } |
930 | |
1330 | |
931 | quit: |
1331 | quit: |
932 | X_LOCK (wrklock); |
1332 | X_LOCK (wrklock); |
933 | worker_free (self); |
1333 | etp_worker_free (self); |
934 | X_UNLOCK (wrklock); |
1334 | X_UNLOCK (wrklock); |
935 | |
1335 | |
936 | return 0; |
1336 | return 0; |
937 | } |
1337 | } |
938 | |
1338 | |
939 | /*****************************************************************************/ |
1339 | /*****************************************************************************/ |
940 | |
1340 | |
941 | static void eio_atfork_prepare (void) |
1341 | int eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
942 | { |
1342 | { |
943 | X_LOCK (wrklock); |
1343 | return etp_init (want_poll, done_poll); |
944 | X_LOCK (reqlock); |
|
|
945 | X_LOCK (reslock); |
|
|
946 | #if !HAVE_PREADWRITE |
|
|
947 | X_LOCK (preadwritelock); |
|
|
948 | #endif |
|
|
949 | #if !HAVE_READDIR_R |
|
|
950 | X_LOCK (readdirlock); |
|
|
951 | #endif |
|
|
952 | } |
1344 | } |
953 | |
1345 | |
954 | static void eio_atfork_parent (void) |
1346 | static void eio_api_destroy (eio_req *req) |
955 | { |
1347 | { |
956 | #if !HAVE_READDIR_R |
1348 | free (req); |
957 | X_UNLOCK (readdirlock); |
|
|
958 | #endif |
|
|
959 | #if !HAVE_PREADWRITE |
|
|
960 | X_UNLOCK (preadwritelock); |
|
|
961 | #endif |
|
|
962 | X_UNLOCK (reslock); |
|
|
963 | X_UNLOCK (reqlock); |
|
|
964 | X_UNLOCK (wrklock); |
|
|
965 | } |
1349 | } |
966 | |
1350 | |
967 | static void eio_atfork_child (void) |
1351 | #define REQ(rtype) \ |
968 | { |
1352 | eio_req *req; \ |
969 | eio_req *prv; |
1353 | \ |
|
|
1354 | req = (eio_req *)calloc (1, sizeof *req); \ |
|
|
1355 | if (!req) \ |
|
|
1356 | return 0; \ |
|
|
1357 | \ |
|
|
1358 | req->type = rtype; \ |
|
|
1359 | req->pri = pri; \ |
|
|
1360 | req->finish = cb; \ |
|
|
1361 | req->data = data; \ |
|
|
1362 | req->destroy = eio_api_destroy; |
970 | |
1363 | |
971 | while (prv = reqq_shift (&req_queue)) |
1364 | #define SEND eio_submit (req); return req |
972 | eio_destroy (prv); |
|
|
973 | |
1365 | |
974 | while (prv = reqq_shift (&res_queue)) |
1366 | #define PATH \ |
975 | eio_destroy (prv); |
1367 | req->flags |= EIO_FLAG_PTR1_FREE; \ |
|
|
1368 | req->ptr1 = strdup (path); \ |
|
|
1369 | if (!req->ptr1) \ |
|
|
1370 | { \ |
|
|
1371 | eio_api_destroy (req); \ |
|
|
1372 | return 0; \ |
|
|
1373 | } |
976 | |
1374 | |
977 | while (wrk_first.next != &wrk_first) |
1375 | static void eio_execute (etp_worker *self, eio_req *req) |
|
|
1376 | { |
|
|
1377 | errno = 0; |
|
|
1378 | |
|
|
1379 | switch (req->type) |
978 | { |
1380 | { |
979 | worker *wrk = wrk_first.next; |
1381 | case EIO_READ: ALLOC (req->size); |
|
|
1382 | req->result = req->offs >= 0 |
|
|
1383 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
|
|
1384 | : read (req->int1, req->ptr2, req->size); break; |
|
|
1385 | case EIO_WRITE: req->result = req->offs >= 0 |
|
|
1386 | ? pwrite (req->int1, req->ptr2, req->size, req->offs) |
|
|
1387 | : write (req->int1, req->ptr2, req->size); break; |
980 | |
1388 | |
981 | if (wrk->req) |
1389 | case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
982 | eio_destroy (wrk->req); |
1390 | case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break; |
983 | |
1391 | |
984 | worker_clear (wrk); |
1392 | case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
985 | worker_free (wrk); |
1393 | req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
986 | } |
1394 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
|
|
1395 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
1396 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
|
|
1397 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
987 | |
1398 | |
988 | started = 0; |
1399 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
989 | idle = 0; |
1400 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
990 | nreqs = 0; |
1401 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
991 | nready = 0; |
1402 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
992 | npending = 0; |
1403 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
|
|
1404 | case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; |
993 | |
1405 | |
994 | eio_atfork_parent (); |
1406 | case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break; |
995 | } |
1407 | case EIO_CLOSE: req->result = close (req->int1); break; |
|
|
1408 | case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; |
|
|
1409 | case EIO_UNLINK: req->result = unlink (req->ptr1); break; |
|
|
1410 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
|
|
1411 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
|
|
1412 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
|
|
1413 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
|
|
1414 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
|
|
1415 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; |
996 | |
1416 | |
997 | int eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1417 | case EIO_READLINK: ALLOC (NAME_MAX); |
998 | { |
1418 | req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
999 | want_poll_cb = want_poll; |
|
|
1000 | done_poll_cb = done_poll; |
|
|
1001 | |
1419 | |
|
|
1420 | case EIO_SYNC: req->result = 0; sync (); break; |
|
|
1421 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
|
|
1422 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
|
|
1423 | case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break; |
|
|
1424 | case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; |
|
|
1425 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
|
|
1426 | |
|
|
1427 | case EIO_READDIR: eio__scandir (req, self); break; |
|
|
1428 | |
|
|
1429 | case EIO_BUSY: |
1002 | #ifdef _WIN32 |
1430 | #ifdef _WIN32 |
1003 | X_MUTEX_CHECK (wrklock); |
1431 | Sleep (req->nv1 * 1000.); |
1004 | X_MUTEX_CHECK (reslock); |
1432 | #else |
1005 | X_MUTEX_CHECK (reqlock); |
|
|
1006 | X_MUTEX_CHECK (reqwait); |
|
|
1007 | X_MUTEX_CHECK (preadwritelock); |
|
|
1008 | X_MUTEX_CHECK (readdirlock); |
|
|
1009 | |
|
|
1010 | X_COND_CHECK (reqwait); |
|
|
1011 | #endif |
|
|
1012 | |
|
|
1013 | X_THREAD_ATFORK (eio_atfork_prepare, eio_atfork_parent, eio_atfork_child); |
|
|
1014 | } |
|
|
1015 | |
|
|
1016 | #if 0 |
|
|
1017 | |
|
|
1018 | eio_req *eio_fsync (int fd, eio_cb cb); |
|
|
1019 | eio_req *eio_fdatasync (int fd, eio_cb cb); |
|
|
1020 | eio_req *eio_dupclose (int fd, eio_cb cb); |
|
|
1021 | eio_req *eio_readahead (int fd, off_t offset, size_t length, eio_cb cb); |
|
|
1022 | eio_req *eio_read (int fd, off_t offs, size_t length, char *data, eio_cb cb); |
|
|
1023 | eio_req *eio_write (int fd, off_t offs, size_t length, char *data, eio_cb cb); |
|
|
1024 | eio_req *eio_fstat (int fd, eio_cb cb); /* stat buffer=ptr2 allocates dynamically */ |
|
|
1025 | eio_req *eio_futime (int fd, double atime, double mtime, eio_cb cb); |
|
|
1026 | eio_req *eio_ftruncate (int fd, off_t offset, eio_cb cb); |
|
|
1027 | eio_req *eio_fchmod (int fd, mode_t mode, eio_cb cb); |
|
|
1028 | eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, eio_cb cb); |
|
|
1029 | eio_req *eio_dup2 (int fd, int fd2, eio_cb cb); |
|
|
1030 | eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, eio_cb cb); |
|
|
1031 | eio_req *eio_open (const char *path, int flags, mode_t mode, eio_cb cb); |
|
|
1032 | eio_req *eio_readlink (const char *path, eio_cb cb); /* result=ptr2 allocated dynamically */ |
|
|
1033 | eio_req *eio_stat (const char *path, eio_cb cb); /* stat buffer=ptr2 allocates dynamically */ |
|
|
1034 | eio_req *eio_lstat (const char *path, eio_cb cb); /* stat buffer=ptr2 allocates dynamically */ |
|
|
1035 | eio_req *eio_utime (const char *path, double atime, double mtime, eio_cb cb); |
|
|
1036 | eio_req *eio_truncate (const char *path, off_t offset, eio_cb cb); |
|
|
1037 | eio_req *eio_chmod (const char *path, mode_t mode, eio_cb cb); |
|
|
1038 | eio_req *eio_mkdir (const char *path, mode_t mode, eio_cb cb); |
|
|
1039 | eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, eio_cb cb); |
|
|
1040 | eio_req *eio_unlink (const char *path, eio_cb cb); |
|
|
1041 | eio_req *eio_rmdir (const char *path, eio_cb cb); |
|
|
1042 | eio_req *eio_readdir (const char *path, eio_cb cb); /* result=ptr2 allocated dynamically */ |
|
|
1043 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, eio_cb cb); |
|
|
1044 | eio_req *eio_busy (double delay, eio_cb cb); /* ties a thread for this long, simulating busyness */ |
|
|
1045 | eio_req *eio_nop (eio_cb cb); /* does nothing except go through the whole process */ |
|
|
1046 | void |
|
|
1047 | aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) |
|
|
1048 | PROTOTYPE: $$$;$ |
|
|
1049 | PPCODE: |
|
|
1050 | { |
|
|
1051 | dREQ; |
|
|
1052 | |
|
|
1053 | req->type = EIO_OPEN; |
|
|
1054 | req->sv1 = newSVsv (pathname); |
|
|
1055 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1056 | req->int1 = flags; |
|
|
1057 | req->int2 = mode; |
|
|
1058 | |
|
|
1059 | EIO_SEND; |
|
|
1060 | } |
|
|
1061 | |
|
|
1062 | void |
|
|
1063 | aio_fsync (SV *fh, SV *callback=&PL_sv_undef) |
|
|
1064 | PROTOTYPE: $;$ |
|
|
1065 | ALIAS: |
|
|
1066 | aio_fsync = EIO_FSYNC |
|
|
1067 | aio_fdatasync = EIO_FDATASYNC |
|
|
1068 | PPCODE: |
|
|
1069 | { |
|
|
1070 | dREQ; |
|
|
1071 | |
|
|
1072 | req->type = ix; |
|
|
1073 | req->sv1 = newSVsv (fh); |
|
|
1074 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
1075 | |
|
|
1076 | EIO_SEND (req); |
|
|
1077 | } |
|
|
1078 | |
|
|
1079 | void |
|
|
1080 | aio_close (SV *fh, SV *callback=&PL_sv_undef) |
|
|
1081 | PROTOTYPE: $;$ |
|
|
1082 | PPCODE: |
|
|
1083 | { |
|
|
1084 | dREQ; |
|
|
1085 | |
|
|
1086 | req->type = EIO_CLOSE; |
|
|
1087 | req->sv1 = newSVsv (fh); |
|
|
1088 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
1089 | |
|
|
1090 | EIO_SEND (req); |
|
|
1091 | } |
|
|
1092 | |
|
|
1093 | void |
|
|
1094 | aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) |
|
|
1095 | ALIAS: |
|
|
1096 | aio_read = EIO_READ |
|
|
1097 | aio_write = EIO_WRITE |
|
|
1098 | PROTOTYPE: $$$$$;$ |
|
|
1099 | PPCODE: |
|
|
1100 | { |
|
|
1101 | STRLEN svlen; |
|
|
1102 | char *svptr = SvPVbyte (data, svlen); |
|
|
1103 | UV len = SvUV (length); |
|
|
1104 | |
|
|
1105 | SvUPGRADE (data, SVt_PV); |
|
|
1106 | SvPOK_on (data); |
|
|
1107 | |
|
|
1108 | if (dataoffset < 0) |
|
|
1109 | dataoffset += svlen; |
|
|
1110 | |
|
|
1111 | if (dataoffset < 0 || dataoffset > svlen) |
|
|
1112 | croak ("dataoffset outside of data scalar"); |
|
|
1113 | |
|
|
1114 | if (ix == EIO_WRITE) |
|
|
1115 | { |
|
|
1116 | /* write: check length and adjust. */ |
|
|
1117 | if (!SvOK (length) || len + dataoffset > svlen) |
|
|
1118 | len = svlen - dataoffset; |
|
|
1119 | } |
|
|
1120 | else |
|
|
1121 | { |
|
|
1122 | /* read: grow scalar as necessary */ |
|
|
1123 | svptr = SvGROW (data, len + dataoffset + 1); |
|
|
1124 | } |
|
|
1125 | |
|
|
1126 | if (len < 0) |
|
|
1127 | croak ("length must not be negative"); |
|
|
1128 | |
|
|
1129 | { |
1433 | { |
1130 | dREQ; |
1434 | struct timeval tv; |
1131 | |
1435 | |
1132 | req->type = ix; |
1436 | tv.tv_sec = req->nv1; |
1133 | req->sv1 = newSVsv (fh); |
1437 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; |
1134 | req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh)) |
|
|
1135 | : IoOFP (sv_2io (fh))); |
|
|
1136 | req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; |
|
|
1137 | req->size = len; |
|
|
1138 | req->sv2 = SvREFCNT_inc (data); |
|
|
1139 | req->ptr2 = (char *)svptr + dataoffset; |
|
|
1140 | req->stroffset = dataoffset; |
|
|
1141 | |
1438 | |
1142 | if (!SvREADONLY (data)) |
1439 | req->result = select (0, 0, 0, 0, &tv); |
|
|
1440 | } |
|
|
1441 | #endif |
|
|
1442 | break; |
|
|
1443 | |
|
|
1444 | case EIO_UTIME: |
|
|
1445 | case EIO_FUTIME: |
|
|
1446 | { |
|
|
1447 | struct timeval tv[2]; |
|
|
1448 | struct timeval *times; |
|
|
1449 | |
|
|
1450 | if (req->nv1 != -1. || req->nv2 != -1.) |
1143 | { |
1451 | { |
1144 | SvREADONLY_on (data); |
1452 | tv[0].tv_sec = req->nv1; |
1145 | req->flags |= FLAG_SV2_RO_OFF; |
1453 | tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.; |
|
|
1454 | tv[1].tv_sec = req->nv2; |
|
|
1455 | tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.; |
|
|
1456 | |
|
|
1457 | times = tv; |
1146 | } |
1458 | } |
|
|
1459 | else |
|
|
1460 | times = 0; |
1147 | |
1461 | |
1148 | EIO_SEND; |
1462 | |
|
|
1463 | req->result = req->type == EIO_FUTIME |
|
|
1464 | ? futimes (req->int1, times) |
|
|
1465 | : utimes (req->ptr1, times); |
1149 | } |
1466 | } |
1150 | } |
1467 | break; |
1151 | |
1468 | |
1152 | void |
1469 | case EIO_GROUP: |
1153 | aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) |
1470 | abort (); /* handled in eio_request */ |
1154 | PROTOTYPE: $$;$ |
|
|
1155 | PPCODE: |
|
|
1156 | { |
|
|
1157 | SV *data; |
|
|
1158 | dREQ; |
|
|
1159 | |
1471 | |
1160 | data = newSV (NAME_MAX); |
1472 | case EIO_NOP: |
1161 | SvPOK_on (data); |
1473 | req->result = 0; |
|
|
1474 | break; |
1162 | |
1475 | |
1163 | req->type = EIO_READLINK; |
1476 | case EIO_CUSTOM: |
1164 | req->sv1 = newSVsv (path); |
1477 | ((void (*)(eio_req *))req->feed) (req); |
1165 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
1478 | break; |
1166 | req->sv2 = data; |
|
|
1167 | req->ptr2 = SvPVbyte_nolen (data); |
|
|
1168 | |
1479 | |
1169 | EIO_SEND; |
1480 | default: |
1170 | } |
1481 | req->result = -1; |
|
|
1482 | break; |
|
|
1483 | } |
1171 | |
1484 | |
1172 | void |
1485 | req->errorno = errno; |
1173 | aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef) |
|
|
1174 | PROTOTYPE: $$$$;$ |
|
|
1175 | PPCODE: |
|
|
1176 | { |
|
|
1177 | dREQ; |
|
|
1178 | |
|
|
1179 | req->type = EIO_SENDFILE; |
|
|
1180 | req->sv1 = newSVsv (out_fh); |
|
|
1181 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
|
|
1182 | req->sv2 = newSVsv (in_fh); |
|
|
1183 | req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
|
|
1184 | req->offs = SvVAL64 (in_offset); |
|
|
1185 | req->size = length; |
|
|
1186 | |
|
|
1187 | EIO_SEND; |
|
|
1188 | } |
1486 | } |
1189 | |
1487 | |
1190 | void |
1488 | #ifndef EIO_NO_WRAPPERS |
1191 | aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef) |
|
|
1192 | PROTOTYPE: $$$;$ |
|
|
1193 | PPCODE: |
|
|
1194 | { |
|
|
1195 | dREQ; |
|
|
1196 | |
1489 | |
1197 | req->type = EIO_READAHEAD; |
1490 | eio_req *eio_nop (int pri, eio_cb cb, void *data) |
1198 | req->sv1 = newSVsv (fh); |
|
|
1199 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
1200 | req->offs = SvVAL64 (offset); |
|
|
1201 | req->size = length; |
|
|
1202 | |
|
|
1203 | EIO_SEND; |
|
|
1204 | } |
|
|
1205 | |
|
|
1206 | void |
|
|
1207 | aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef) |
|
|
1208 | ALIAS: |
|
|
1209 | aio_stat = EIO_STAT |
|
|
1210 | aio_lstat = EIO_LSTAT |
|
|
1211 | PPCODE: |
|
|
1212 | { |
1491 | { |
1213 | dREQ; |
1492 | REQ (EIO_NOP); SEND; |
|
|
1493 | } |
1214 | |
1494 | |
1215 | req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT)); |
1495 | eio_req *eio_busy (double delay, int pri, eio_cb cb, void *data) |
1216 | if (!req->ptr2) |
1496 | { |
1217 | { |
1497 | REQ (EIO_BUSY); req->nv1 = delay; SEND; |
1218 | req_destroy (req); |
1498 | } |
1219 | croak ("out of memory during aio_stat statdata allocation"); |
|
|
1220 | } |
|
|
1221 | |
1499 | |
|
|
1500 | eio_req *eio_sync (int pri, eio_cb cb, void *data) |
|
|
1501 | { |
|
|
1502 | REQ (EIO_SYNC); SEND; |
|
|
1503 | } |
|
|
1504 | |
|
|
1505 | eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data) |
|
|
1506 | { |
|
|
1507 | REQ (EIO_FSYNC); req->int1 = fd; SEND; |
|
|
1508 | } |
|
|
1509 | |
|
|
1510 | eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
|
|
1511 | { |
|
|
1512 | REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
|
|
1513 | } |
|
|
1514 | |
|
|
1515 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
|
|
1516 | { |
|
|
1517 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
|
|
1518 | } |
|
|
1519 | |
|
|
1520 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
|
|
1521 | { |
|
|
1522 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
|
|
1523 | } |
|
|
1524 | |
|
|
1525 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
|
|
1526 | { |
|
|
1527 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
|
|
1528 | } |
|
|
1529 | |
|
|
1530 | eio_req *eio_close (int fd, int pri, eio_cb cb, void *data) |
|
|
1531 | { |
|
|
1532 | REQ (EIO_CLOSE); req->int1 = fd; SEND; |
|
|
1533 | } |
|
|
1534 | |
|
|
1535 | eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data) |
|
|
1536 | { |
|
|
1537 | REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND; |
|
|
1538 | } |
|
|
1539 | |
|
|
1540 | eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
|
|
1541 | { |
|
|
1542 | REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
|
|
1543 | } |
|
|
1544 | |
|
|
1545 | eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
|
|
1546 | { |
|
|
1547 | REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
|
|
1548 | } |
|
|
1549 | |
|
|
1550 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
|
|
1551 | { |
|
|
1552 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
|
|
1553 | } |
|
|
1554 | |
|
|
1555 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
|
|
1556 | { |
|
|
1557 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
|
|
1558 | } |
|
|
1559 | |
|
|
1560 | eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data) |
|
|
1561 | { |
|
|
1562 | REQ (EIO_FTRUNCATE); req->int1 = fd; req->offs = offset; SEND; |
|
|
1563 | } |
|
|
1564 | |
|
|
1565 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) |
|
|
1566 | { |
|
|
1567 | REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
|
|
1568 | } |
|
|
1569 | |
|
|
1570 | eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
|
|
1571 | { |
|
|
1572 | REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
|
|
1573 | } |
|
|
1574 | |
|
|
1575 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) |
|
|
1576 | { |
|
|
1577 | REQ (EIO_DUP2); req->int1 = fd; req->int2 = fd2; SEND; |
|
|
1578 | } |
|
|
1579 | |
|
|
1580 | eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data) |
|
|
1581 | { |
|
|
1582 | REQ (EIO_SENDFILE); req->int1 = out_fd; req->int2 = in_fd; req->offs = in_offset; req->size = length; SEND; |
|
|
1583 | } |
|
|
1584 | |
|
|
1585 | eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data) |
|
|
1586 | { |
|
|
1587 | REQ (EIO_OPEN); PATH; req->int1 = flags; req->int2 = (long)mode; SEND; |
|
|
1588 | } |
|
|
1589 | |
|
|
1590 | eio_req *eio_utime (const char *path, double atime, double mtime, int pri, eio_cb cb, void *data) |
|
|
1591 | { |
|
|
1592 | REQ (EIO_UTIME); PATH; req->nv1 = atime; req->nv2 = mtime; SEND; |
|
|
1593 | } |
|
|
1594 | |
|
|
1595 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) |
|
|
1596 | { |
|
|
1597 | REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; |
|
|
1598 | } |
|
|
1599 | |
|
|
1600 | eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
|
|
1601 | { |
|
|
1602 | REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
|
|
1603 | } |
|
|
1604 | |
|
|
1605 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
|
|
1606 | { |
|
|
1607 | REQ (EIO_CHMOD); PATH; req->int2 = (long)mode; SEND; |
|
|
1608 | } |
|
|
1609 | |
|
|
1610 | eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
|
|
1611 | { |
|
|
1612 | REQ (EIO_MKDIR); PATH; req->int2 = (long)mode; SEND; |
|
|
1613 | } |
|
|
1614 | |
|
|
1615 | static eio_req * |
|
|
1616 | eio__1path (int type, const char *path, int pri, eio_cb cb, void *data) |
|
|
1617 | { |
|
|
1618 | REQ (type); PATH; SEND; |
|
|
1619 | } |
|
|
1620 | |
|
|
1621 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
|
|
1622 | { |
|
|
1623 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
|
|
1624 | } |
|
|
1625 | |
|
|
1626 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
|
|
1627 | { |
|
|
1628 | return eio__1path (EIO_STAT, path, pri, cb, data); |
|
|
1629 | } |
|
|
1630 | |
|
|
1631 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
|
|
1632 | { |
|
|
1633 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
|
|
1634 | } |
|
|
1635 | |
|
|
1636 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
|
|
1637 | { |
|
|
1638 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
|
|
1639 | } |
|
|
1640 | |
|
|
1641 | eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) |
|
|
1642 | { |
|
|
1643 | return eio__1path (EIO_RMDIR, path, pri, cb, data); |
|
|
1644 | } |
|
|
1645 | |
|
|
1646 | eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data) |
|
|
1647 | { |
|
|
1648 | REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
|
|
1649 | } |
|
|
1650 | |
|
|
1651 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
|
|
1652 | { |
|
|
1653 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; |
|
|
1654 | } |
|
|
1655 | |
|
|
1656 | static eio_req * |
|
|
1657 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
|
|
1658 | { |
|
|
1659 | REQ (type); PATH; |
|
|
1660 | |
1222 | req->flags |= FLAG_PTR2_FREE; |
1661 | req->flags |= EIO_FLAG_PTR2_FREE; |
1223 | req->sv1 = newSVsv (fh_or_path); |
1662 | req->ptr2 = strdup (new_path); |
|
|
1663 | if (!req->ptr2) |
|
|
1664 | { |
|
|
1665 | eio_api_destroy (req); |
|
|
1666 | return 0; |
|
|
1667 | } |
1224 | |
1668 | |
1225 | if (SvPOK (fh_or_path)) |
1669 | SEND; |
1226 | { |
|
|
1227 | req->type = ix; |
|
|
1228 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1229 | } |
|
|
1230 | else |
|
|
1231 | { |
|
|
1232 | req->type = EIO_FSTAT; |
|
|
1233 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
|
|
1234 | } |
|
|
1235 | |
|
|
1236 | EIO_SEND; |
|
|
1237 | } |
1670 | } |
1238 | |
1671 | |
1239 | void |
1672 | eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1240 | aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef) |
|
|
1241 | PPCODE: |
|
|
1242 | { |
1673 | { |
1243 | dREQ; |
1674 | return eio__2path (EIO_LINK, path, new_path, pri, cb, data); |
1244 | |
|
|
1245 | req->nv1 = SvOK (atime) ? SvNV (atime) : -1.; |
|
|
1246 | req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.; |
|
|
1247 | req->sv1 = newSVsv (fh_or_path); |
|
|
1248 | |
|
|
1249 | if (SvPOK (fh_or_path)) |
|
|
1250 | { |
|
|
1251 | req->type = EIO_UTIME; |
|
|
1252 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1253 | } |
|
|
1254 | else |
|
|
1255 | { |
|
|
1256 | req->type = EIO_FUTIME; |
|
|
1257 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
|
|
1258 | } |
|
|
1259 | |
|
|
1260 | EIO_SEND; |
|
|
1261 | } |
1675 | } |
1262 | |
1676 | |
1263 | void |
1677 | eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1264 | aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef) |
|
|
1265 | PPCODE: |
|
|
1266 | { |
1678 | { |
1267 | dREQ; |
1679 | return eio__2path (EIO_SYMLINK, path, new_path, pri, cb, data); |
1268 | |
|
|
1269 | req->sv1 = newSVsv (fh_or_path); |
|
|
1270 | req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; |
|
|
1271 | |
|
|
1272 | if (SvPOK (fh_or_path)) |
|
|
1273 | { |
|
|
1274 | req->type = EIO_TRUNCATE; |
|
|
1275 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1276 | } |
|
|
1277 | else |
|
|
1278 | { |
|
|
1279 | req->type = EIO_FTRUNCATE; |
|
|
1280 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
|
|
1281 | } |
|
|
1282 | |
|
|
1283 | EIO_SEND; |
|
|
1284 | } |
1680 | } |
1285 | |
1681 | |
1286 | void |
1682 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1287 | aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef) |
|
|
1288 | ALIAS: |
|
|
1289 | aio_chmod = EIO_CHMOD |
|
|
1290 | aio_fchmod = EIO_FCHMOD |
|
|
1291 | aio_mkdir = EIO_MKDIR |
|
|
1292 | PPCODE: |
|
|
1293 | { |
1683 | { |
1294 | dREQ; |
1684 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
1295 | |
|
|
1296 | req->type = type; |
|
|
1297 | req->int2 = mode; |
|
|
1298 | req->sv1 = newSVsv (fh_or_path); |
|
|
1299 | |
|
|
1300 | if (ix == EIO_FCHMOD) |
|
|
1301 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
|
|
1302 | else |
|
|
1303 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1304 | |
|
|
1305 | EIO_SEND; |
|
|
1306 | } |
1685 | } |
1307 | |
1686 | |
1308 | void |
1687 | eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) |
1309 | aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef) |
|
|
1310 | PPCODE: |
|
|
1311 | { |
1688 | { |
1312 | dREQ; |
1689 | REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND; |
1313 | |
|
|
1314 | req->int2 = SvOK (uid) ? SvIV (uid) : -1; |
|
|
1315 | req->int3 = SvOK (gid) ? SvIV (gid) : -1; |
|
|
1316 | req->sv1 = newSVsv (fh_or_path); |
|
|
1317 | |
|
|
1318 | if (SvPOK (fh_or_path)) |
|
|
1319 | { |
|
|
1320 | req->type = EIO_CHOWN; |
|
|
1321 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1322 | } |
|
|
1323 | else |
|
|
1324 | { |
|
|
1325 | req->type = EIO_FCHOWN; |
|
|
1326 | req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
|
|
1327 | } |
|
|
1328 | |
|
|
1329 | EIO_SEND; |
|
|
1330 | } |
1690 | } |
1331 | |
1691 | |
1332 | void |
|
|
1333 | aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef) |
|
|
1334 | ALIAS: |
|
|
1335 | aio_unlink = EIO_UNLINK |
|
|
1336 | aio_rmdir = EIO_RMDIR |
|
|
1337 | aio_readdir = EIO_READDIR |
|
|
1338 | PPCODE: |
|
|
1339 | { |
|
|
1340 | dREQ; |
|
|
1341 | |
|
|
1342 | req->type = ix; |
|
|
1343 | req->sv1 = newSVsv (pathname); |
|
|
1344 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1345 | |
|
|
1346 | EIO_SEND; |
|
|
1347 | } |
|
|
1348 | |
|
|
1349 | void |
|
|
1350 | aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef) |
|
|
1351 | ALIAS: |
|
|
1352 | aio_link = EIO_LINK |
|
|
1353 | aio_symlink = EIO_SYMLINK |
|
|
1354 | aio_rename = EIO_RENAME |
|
|
1355 | PPCODE: |
|
|
1356 | { |
|
|
1357 | dREQ; |
|
|
1358 | |
|
|
1359 | req->type = ix; |
|
|
1360 | req->sv1 = newSVsv (oldpath); |
|
|
1361 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1362 | req->sv2 = newSVsv (newpath); |
|
|
1363 | req->ptr2 = SvPVbyte_nolen (req->sv2); |
|
|
1364 | |
|
|
1365 | EIO_SEND; |
|
|
1366 | } |
|
|
1367 | |
|
|
1368 | void |
|
|
1369 | aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef) |
|
|
1370 | PPCODE: |
|
|
1371 | { |
|
|
1372 | dREQ; |
|
|
1373 | |
|
|
1374 | req->type = EIO_MKNOD; |
|
|
1375 | req->sv1 = newSVsv (pathname); |
|
|
1376 | req->ptr1 = SvPVbyte_nolen (req->sv1); |
|
|
1377 | req->int2 = (mode_t)mode; |
|
|
1378 | req->offs = dev; |
|
|
1379 | |
|
|
1380 | EIO_SEND; |
|
|
1381 | } |
|
|
1382 | |
|
|
1383 | void |
|
|
1384 | aio_busy (double delay, SV *callback=&PL_sv_undef) |
|
|
1385 | PPCODE: |
|
|
1386 | { |
|
|
1387 | dREQ; |
|
|
1388 | |
|
|
1389 | req->type = EIO_BUSY; |
|
|
1390 | req->nv1 = delay < 0. ? 0. : delay; |
|
|
1391 | |
|
|
1392 | EIO_SEND; |
|
|
1393 | } |
|
|
1394 | |
|
|
1395 | void |
|
|
1396 | aio_group (SV *callback=&PL_sv_undef) |
|
|
1397 | PROTOTYPE: ;$ |
|
|
1398 | PPCODE: |
|
|
1399 | { |
|
|
1400 | dREQ; |
|
|
1401 | |
|
|
1402 | req->type = EIO_GROUP; |
|
|
1403 | |
|
|
1404 | req_send (req); |
|
|
1405 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
|
|
1406 | } |
|
|
1407 | |
|
|
1408 | void |
|
|
1409 | aio_nop (SV *callback=&PL_sv_undef) |
|
|
1410 | ALIAS: |
|
|
1411 | aio_nop = EIO_NOP |
|
|
1412 | aio_sync = EIO_SYNC |
|
|
1413 | PPCODE: |
|
|
1414 | { |
|
|
1415 | dREQ; |
|
|
1416 | |
|
|
1417 | #endif |
1692 | #endif |
|
|
1693 | |
|
|
1694 | eio_req *eio_grp (eio_cb cb, void *data) |
|
|
1695 | { |
|
|
1696 | const int pri = EIO_PRI_MAX; |
|
|
1697 | |
|
|
1698 | REQ (EIO_GROUP); SEND; |
|
|
1699 | } |
|
|
1700 | |
|
|
1701 | #undef REQ |
|
|
1702 | #undef PATH |
|
|
1703 | #undef SEND |
|
|
1704 | |
|
|
1705 | /*****************************************************************************/ |
|
|
1706 | /* grp functions */ |
1418 | |
1707 | |
1419 | void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
1708 | void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
1420 | { |
1709 | { |
1421 | grp->int2 = limit; |
1710 | grp->int2 = limit; |
1422 | grp->feed = feed; |
1711 | grp->feed = feed; |
… | |
… | |
1433 | |
1722 | |
1434 | void eio_grp_add (eio_req *grp, eio_req *req) |
1723 | void eio_grp_add (eio_req *grp, eio_req *req) |
1435 | { |
1724 | { |
1436 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
1725 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
1437 | |
1726 | |
|
|
1727 | grp->flags |= EIO_FLAG_GROUPADD; |
|
|
1728 | |
1438 | ++grp->size; |
1729 | ++grp->size; |
1439 | req->grp = grp; |
1730 | req->grp = grp; |
1440 | |
1731 | |
1441 | req->grp_prev = 0; |
1732 | req->grp_prev = 0; |
1442 | req->grp_next = grp->grp_first; |
1733 | req->grp_next = grp->grp_first; |
… | |
… | |
1445 | grp->grp_first->grp_prev = req; |
1736 | grp->grp_first->grp_prev = req; |
1446 | |
1737 | |
1447 | grp->grp_first = req; |
1738 | grp->grp_first = req; |
1448 | } |
1739 | } |
1449 | |
1740 | |
|
|
1741 | /*****************************************************************************/ |
|
|
1742 | /* misc garbage */ |
1450 | |
1743 | |
|
|
1744 | ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
|
|
1745 | { |
|
|
1746 | etp_worker wrk; |
|
|
1747 | |
|
|
1748 | wrk.dbuf = 0; |
|
|
1749 | |
|
|
1750 | eio__sendfile (ofd, ifd, offset, count, &wrk); |
|
|
1751 | |
|
|
1752 | if (wrk.dbuf) |
|
|
1753 | free (wrk.dbuf); |
|
|
1754 | } |
|
|
1755 | |