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1.14 |
/* |
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* libeio implementation |
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* |
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root |
1.31 |
* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libeio@schmorp.de> |
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1.14 |
* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without modifica- |
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* tion, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright notice, |
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* this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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* OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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* Alternatively, the contents of this file may be used under the terms of |
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* the GNU General Public License ("GPL") version 2 or any later version, |
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* in which case the provisions of the GPL are applicable instead of |
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* the above. If you wish to allow the use of your version of this file |
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* only under the terms of the GPL and not to allow others to use your |
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* version of this file under the BSD license, indicate your decision |
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* by deleting the provisions above and replace them with the notice |
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* and other provisions required by the GPL. If you do not delete the |
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* provisions above, a recipient may use your version of this file under |
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* either the BSD or the GPL. |
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*/ |
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root |
1.1 |
#include "eio.h" |
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1.29 |
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42 |
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#ifdef EIO_STACKSIZE |
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# define XTHREAD_STACKSIZE EIO_STACKSIZE |
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#endif |
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1.1 |
#include "xthread.h" |
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#include <errno.h> |
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#include <stddef.h> |
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#include <stdlib.h> |
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1.3 |
#include <string.h> |
51 |
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1.1 |
#include <errno.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <limits.h> |
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#include <fcntl.h> |
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1.8 |
#include <assert.h> |
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1.1 |
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58 |
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#ifndef EIO_FINISH |
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# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
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#endif |
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#ifndef EIO_DESTROY |
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# define EIO_DESTROY(req) do { if ((req)->destroy) (req)->destroy (req); } while (0) |
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#endif |
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#ifndef EIO_FEED |
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# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) |
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#endif |
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#ifdef _WIN32 |
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/*doh*/ |
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#else |
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# include "config.h" |
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# include <sys/time.h> |
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# include <sys/select.h> |
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1.37 |
# include <sys/mman.h> |
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1.1 |
# include <unistd.h> |
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# include <utime.h> |
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# include <signal.h> |
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1.4 |
# include <dirent.h> |
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1.1 |
|
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1.31 |
/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
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1.45 |
# if __freebsd || defined __NetBSD__ || defined __OpenBSD__ |
86 |
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1.33 |
# define _DIRENT_HAVE_D_TYPE /* sigh */ |
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1.31 |
# define D_INO(de) (de)->d_fileno |
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1.33 |
# define D_NAMLEN(de) (de)->d_namlen |
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1.45 |
# elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 |
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1.31 |
# define D_INO(de) (de)->d_ino |
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# endif |
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1.33 |
#ifdef _D_EXACT_NAMLEN |
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# undef D_NAMLEN |
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# define D_NAMLEN(de) _D_EXACT_NAMLEN (de) |
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#endif |
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1.31 |
# ifdef _DIRENT_HAVE_D_TYPE |
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# define D_TYPE(de) (de)->d_type |
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# endif |
101 |
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102 |
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1.1 |
# ifndef EIO_STRUCT_DIRENT |
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# define EIO_STRUCT_DIRENT struct dirent |
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# endif |
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#endif |
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#if HAVE_SENDFILE |
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# if __linux |
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# include <sys/sendfile.h> |
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1.45 |
# elif __freebsd || defined __APPLE__ |
112 |
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1.1 |
# include <sys/socket.h> |
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# include <sys/uio.h> |
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# elif __hpux |
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# include <sys/socket.h> |
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1.45 |
# elif __solaris |
117 |
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1.1 |
# include <sys/sendfile.h> |
118 |
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1.45 |
# elif defined _WIN32 |
119 |
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1.1 |
# else |
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# error sendfile support requested but not available |
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# endif |
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#endif |
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1.31 |
#ifndef D_TYPE |
125 |
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# define D_TYPE(de) 0 |
126 |
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#endif |
127 |
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#ifndef D_INO |
128 |
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# define D_INO(de) 0 |
129 |
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#endif |
130 |
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1.33 |
#ifndef D_NAMLEN |
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# define D_NAMLEN(de) strlen ((de)->d_name) |
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#endif |
133 |
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1.31 |
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1.1 |
/* number of seconds after which an idle threads exit */ |
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#define IDLE_TIMEOUT 10 |
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/* used for struct dirent, AIX doesn't provide it */ |
138 |
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#ifndef NAME_MAX |
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# define NAME_MAX 4096 |
140 |
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#endif |
141 |
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142 |
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/* buffer size for various temporary buffers */ |
143 |
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#define EIO_BUFSIZE 65536 |
144 |
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#define dBUF \ |
146 |
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char *eio_buf; \ |
147 |
root |
1.14 |
ETP_WORKER_LOCK (self); \ |
148 |
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1.1 |
self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ |
149 |
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1.14 |
ETP_WORKER_UNLOCK (self); \ |
150 |
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1.9 |
errno = ENOMEM; \ |
151 |
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1.1 |
if (!eio_buf) \ |
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return -1; |
153 |
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154 |
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#define EIO_TICKS ((1000000 + 1023) >> 10) |
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156 |
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1.13 |
/*****************************************************************************/ |
157 |
root |
1.1 |
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158 |
root |
1.24 |
#if __GNUC__ >= 3 |
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# define expect(expr,value) __builtin_expect ((expr),(value)) |
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#else |
161 |
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# define expect(expr,value) (expr) |
162 |
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#endif |
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#define expect_false(expr) expect ((expr) != 0, 0) |
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#define expect_true(expr) expect ((expr) != 0, 1) |
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167 |
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/*****************************************************************************/ |
168 |
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169 |
root |
1.14 |
#define ETP_PRI_MIN EIO_PRI_MIN |
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#define ETP_PRI_MAX EIO_PRI_MAX |
171 |
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172 |
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1.15 |
struct etp_worker; |
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174 |
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1.14 |
#define ETP_REQ eio_req |
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#define ETP_DESTROY(req) eio_destroy (req) |
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static int eio_finish (eio_req *req); |
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#define ETP_FINISH(req) eio_finish (req) |
178 |
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1.15 |
static void eio_execute (struct etp_worker *self, eio_req *req); |
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#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) |
180 |
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1.14 |
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181 |
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#define ETP_WORKER_CLEAR(req) \ |
182 |
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if (wrk->dbuf) \ |
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{ \ |
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free (wrk->dbuf); \ |
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wrk->dbuf = 0; \ |
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} \ |
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\ |
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if (wrk->dirp) \ |
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{ \ |
190 |
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closedir (wrk->dirp); \ |
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wrk->dirp = 0; \ |
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} |
193 |
root |
1.32 |
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194 |
root |
1.14 |
#define ETP_WORKER_COMMON \ |
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void *dbuf; \ |
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DIR *dirp; |
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198 |
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/*****************************************************************************/ |
199 |
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200 |
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#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
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202 |
root |
1.44 |
/* calculate time difference in ~1/EIO_TICKS of a second */ |
203 |
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1.1 |
static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
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{ |
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return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
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+ ((tv2->tv_usec - tv1->tv_usec) >> 10); |
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} |
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root |
1.9 |
static unsigned int started, idle, wanted = 4; |
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1.1 |
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211 |
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1.14 |
static void (*want_poll_cb) (void); |
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static void (*done_poll_cb) (void); |
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root |
1.13 |
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root |
1.14 |
static unsigned int max_poll_time; /* reslock */ |
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static unsigned int max_poll_reqs; /* reslock */ |
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root |
1.13 |
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root |
1.14 |
static volatile unsigned int nreqs; /* reqlock */ |
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static volatile unsigned int nready; /* reqlock */ |
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static volatile unsigned int npending; /* reqlock */ |
220 |
root |
1.13 |
static volatile unsigned int max_idle = 4; |
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222 |
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1.14 |
static mutex_t wrklock = X_MUTEX_INIT; |
223 |
root |
1.13 |
static mutex_t reslock = X_MUTEX_INIT; |
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static mutex_t reqlock = X_MUTEX_INIT; |
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static cond_t reqwait = X_COND_INIT; |
226 |
root |
1.1 |
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227 |
root |
1.22 |
#if !HAVE_PREADWRITE |
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/* |
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* make our pread/pwrite emulation safe against themselves, but not against |
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* normal read/write by using a mutex. slows down execution a lot, |
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* but that's your problem, not mine. |
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*/ |
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static mutex_t preadwritelock = X_MUTEX_INIT; |
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#endif |
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root |
1.14 |
typedef struct etp_worker |
237 |
root |
1.9 |
{ |
238 |
root |
1.14 |
/* locked by wrklock */ |
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struct etp_worker *prev, *next; |
240 |
root |
1.1 |
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thread_t tid; |
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243 |
root |
1.14 |
/* locked by reslock, reqlock or wrklock */ |
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ETP_REQ *req; /* currently processed request */ |
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ETP_WORKER_COMMON |
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} etp_worker; |
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static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */ |
250 |
root |
1.1 |
|
251 |
root |
1.14 |
#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
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#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
253 |
root |
1.13 |
|
254 |
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/* worker threads management */ |
255 |
root |
1.1 |
|
256 |
root |
1.14 |
static void etp_worker_clear (etp_worker *wrk) |
257 |
root |
1.1 |
{ |
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root |
1.14 |
ETP_WORKER_CLEAR (wrk); |
259 |
root |
1.1 |
} |
260 |
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261 |
root |
1.14 |
static void etp_worker_free (etp_worker *wrk) |
262 |
root |
1.1 |
{ |
263 |
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wrk->next->prev = wrk->prev; |
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wrk->prev->next = wrk->next; |
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266 |
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free (wrk); |
267 |
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} |
268 |
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269 |
root |
1.14 |
static unsigned int etp_nreqs (void) |
270 |
root |
1.1 |
{ |
271 |
root |
1.14 |
int retval; |
272 |
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if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
273 |
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retval = nreqs; |
274 |
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if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
275 |
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return retval; |
276 |
root |
1.1 |
} |
277 |
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278 |
root |
1.14 |
static unsigned int etp_nready (void) |
279 |
root |
1.1 |
{ |
280 |
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unsigned int retval; |
281 |
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282 |
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if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
283 |
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retval = nready; |
284 |
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if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
285 |
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286 |
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return retval; |
287 |
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} |
288 |
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289 |
root |
1.14 |
static unsigned int etp_npending (void) |
290 |
root |
1.1 |
{ |
291 |
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unsigned int retval; |
292 |
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293 |
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if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
294 |
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retval = npending; |
295 |
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if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
296 |
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297 |
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return retval; |
298 |
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} |
299 |
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300 |
root |
1.14 |
static unsigned int etp_nthreads (void) |
301 |
root |
1.1 |
{ |
302 |
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unsigned int retval; |
303 |
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304 |
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if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
305 |
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retval = started; |
306 |
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if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
307 |
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308 |
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return retval; |
309 |
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} |
310 |
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311 |
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/* |
312 |
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* a somewhat faster data structure might be nice, but |
313 |
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* with 8 priorities this actually needs <20 insns |
314 |
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* per shift, the most expensive operation. |
315 |
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*/ |
316 |
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typedef struct { |
317 |
root |
1.14 |
ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */ |
318 |
root |
1.1 |
int size; |
319 |
root |
1.14 |
} etp_reqq; |
320 |
root |
1.1 |
|
321 |
root |
1.14 |
static etp_reqq req_queue; |
322 |
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static etp_reqq res_queue; |
323 |
root |
1.1 |
|
324 |
root |
1.14 |
static int reqq_push (etp_reqq *q, ETP_REQ *req) |
325 |
root |
1.1 |
{ |
326 |
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int pri = req->pri; |
327 |
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req->next = 0; |
328 |
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329 |
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if (q->qe[pri]) |
330 |
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{ |
331 |
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q->qe[pri]->next = req; |
332 |
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q->qe[pri] = req; |
333 |
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} |
334 |
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else |
335 |
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q->qe[pri] = q->qs[pri] = req; |
336 |
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337 |
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return q->size++; |
338 |
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} |
339 |
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340 |
root |
1.14 |
static ETP_REQ *reqq_shift (etp_reqq *q) |
341 |
root |
1.1 |
{ |
342 |
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int pri; |
343 |
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344 |
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if (!q->size) |
345 |
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return 0; |
346 |
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347 |
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--q->size; |
348 |
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349 |
root |
1.14 |
for (pri = ETP_NUM_PRI; pri--; ) |
350 |
root |
1.1 |
{ |
351 |
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eio_req *req = q->qs[pri]; |
352 |
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353 |
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if (req) |
354 |
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{ |
355 |
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if (!(q->qs[pri] = (eio_req *)req->next)) |
356 |
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q->qe[pri] = 0; |
357 |
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358 |
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return req; |
359 |
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} |
360 |
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} |
361 |
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362 |
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abort (); |
363 |
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} |
364 |
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365 |
root |
1.13 |
static void etp_atfork_prepare (void) |
366 |
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{ |
367 |
root |
1.14 |
X_LOCK (wrklock); |
368 |
root |
1.13 |
X_LOCK (reqlock); |
369 |
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X_LOCK (reslock); |
370 |
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#if !HAVE_PREADWRITE |
371 |
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X_LOCK (preadwritelock); |
372 |
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#endif |
373 |
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} |
374 |
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375 |
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static void etp_atfork_parent (void) |
376 |
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{ |
377 |
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#if !HAVE_PREADWRITE |
378 |
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X_UNLOCK (preadwritelock); |
379 |
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#endif |
380 |
|
|
X_UNLOCK (reslock); |
381 |
|
|
X_UNLOCK (reqlock); |
382 |
root |
1.14 |
X_UNLOCK (wrklock); |
383 |
root |
1.13 |
} |
384 |
|
|
|
385 |
|
|
static void etp_atfork_child (void) |
386 |
|
|
{ |
387 |
root |
1.14 |
ETP_REQ *prv; |
388 |
root |
1.13 |
|
389 |
root |
1.21 |
while ((prv = reqq_shift (&req_queue))) |
390 |
root |
1.14 |
ETP_DESTROY (prv); |
391 |
root |
1.13 |
|
392 |
root |
1.21 |
while ((prv = reqq_shift (&res_queue))) |
393 |
root |
1.14 |
ETP_DESTROY (prv); |
394 |
root |
1.13 |
|
395 |
|
|
while (wrk_first.next != &wrk_first) |
396 |
|
|
{ |
397 |
root |
1.14 |
etp_worker *wrk = wrk_first.next; |
398 |
root |
1.13 |
|
399 |
|
|
if (wrk->req) |
400 |
root |
1.14 |
ETP_DESTROY (wrk->req); |
401 |
root |
1.13 |
|
402 |
root |
1.14 |
etp_worker_clear (wrk); |
403 |
|
|
etp_worker_free (wrk); |
404 |
root |
1.13 |
} |
405 |
|
|
|
406 |
|
|
started = 0; |
407 |
|
|
idle = 0; |
408 |
|
|
nreqs = 0; |
409 |
|
|
nready = 0; |
410 |
|
|
npending = 0; |
411 |
|
|
|
412 |
|
|
etp_atfork_parent (); |
413 |
|
|
} |
414 |
|
|
|
415 |
|
|
static void |
416 |
|
|
etp_once_init (void) |
417 |
|
|
{ |
418 |
|
|
X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
419 |
|
|
} |
420 |
|
|
|
421 |
|
|
static int |
422 |
root |
1.14 |
etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
423 |
root |
1.13 |
{ |
424 |
|
|
static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
425 |
|
|
|
426 |
|
|
pthread_once (&doinit, etp_once_init); |
427 |
|
|
|
428 |
root |
1.14 |
want_poll_cb = want_poll; |
429 |
|
|
done_poll_cb = done_poll; |
430 |
root |
1.19 |
|
431 |
|
|
return 0; |
432 |
root |
1.14 |
} |
433 |
|
|
|
434 |
|
|
X_THREAD_PROC (etp_proc); |
435 |
|
|
|
436 |
|
|
static void etp_start_thread (void) |
437 |
|
|
{ |
438 |
|
|
etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
439 |
|
|
|
440 |
|
|
/*TODO*/ |
441 |
|
|
assert (("unable to allocate worker thread data", wrk)); |
442 |
|
|
|
443 |
|
|
X_LOCK (wrklock); |
444 |
|
|
|
445 |
|
|
if (thread_create (&wrk->tid, etp_proc, (void *)wrk)) |
446 |
|
|
{ |
447 |
|
|
wrk->prev = &wrk_first; |
448 |
|
|
wrk->next = wrk_first.next; |
449 |
|
|
wrk_first.next->prev = wrk; |
450 |
|
|
wrk_first.next = wrk; |
451 |
|
|
++started; |
452 |
|
|
} |
453 |
|
|
else |
454 |
|
|
free (wrk); |
455 |
|
|
|
456 |
|
|
X_UNLOCK (wrklock); |
457 |
|
|
} |
458 |
|
|
|
459 |
|
|
static void etp_maybe_start_thread (void) |
460 |
|
|
{ |
461 |
root |
1.24 |
if (expect_true (etp_nthreads () >= wanted)) |
462 |
root |
1.14 |
return; |
463 |
|
|
|
464 |
|
|
/* todo: maybe use idle here, but might be less exact */ |
465 |
root |
1.24 |
if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
466 |
root |
1.14 |
return; |
467 |
|
|
|
468 |
|
|
etp_start_thread (); |
469 |
|
|
} |
470 |
|
|
|
471 |
|
|
static void etp_end_thread (void) |
472 |
|
|
{ |
473 |
|
|
eio_req *req = calloc (1, sizeof (eio_req)); |
474 |
|
|
|
475 |
|
|
req->type = -1; |
476 |
|
|
req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
477 |
|
|
|
478 |
|
|
X_LOCK (reqlock); |
479 |
|
|
reqq_push (&req_queue, req); |
480 |
|
|
X_COND_SIGNAL (reqwait); |
481 |
|
|
X_UNLOCK (reqlock); |
482 |
|
|
|
483 |
|
|
X_LOCK (wrklock); |
484 |
|
|
--started; |
485 |
|
|
X_UNLOCK (wrklock); |
486 |
|
|
} |
487 |
|
|
|
488 |
|
|
static int etp_poll (void) |
489 |
|
|
{ |
490 |
|
|
unsigned int maxreqs; |
491 |
|
|
unsigned int maxtime; |
492 |
|
|
struct timeval tv_start, tv_now; |
493 |
|
|
|
494 |
|
|
X_LOCK (reslock); |
495 |
|
|
maxreqs = max_poll_reqs; |
496 |
|
|
maxtime = max_poll_time; |
497 |
|
|
X_UNLOCK (reslock); |
498 |
|
|
|
499 |
|
|
if (maxtime) |
500 |
|
|
gettimeofday (&tv_start, 0); |
501 |
|
|
|
502 |
|
|
for (;;) |
503 |
|
|
{ |
504 |
|
|
ETP_REQ *req; |
505 |
|
|
|
506 |
|
|
etp_maybe_start_thread (); |
507 |
|
|
|
508 |
|
|
X_LOCK (reslock); |
509 |
|
|
req = reqq_shift (&res_queue); |
510 |
|
|
|
511 |
|
|
if (req) |
512 |
|
|
{ |
513 |
|
|
--npending; |
514 |
|
|
|
515 |
|
|
if (!res_queue.size && done_poll_cb) |
516 |
|
|
done_poll_cb (); |
517 |
|
|
} |
518 |
|
|
|
519 |
|
|
X_UNLOCK (reslock); |
520 |
|
|
|
521 |
|
|
if (!req) |
522 |
|
|
return 0; |
523 |
|
|
|
524 |
|
|
X_LOCK (reqlock); |
525 |
|
|
--nreqs; |
526 |
|
|
X_UNLOCK (reqlock); |
527 |
|
|
|
528 |
root |
1.24 |
if (expect_false (req->type == EIO_GROUP && req->size)) |
529 |
root |
1.14 |
{ |
530 |
|
|
req->int1 = 1; /* mark request as delayed */ |
531 |
|
|
continue; |
532 |
|
|
} |
533 |
|
|
else |
534 |
|
|
{ |
535 |
|
|
int res = ETP_FINISH (req); |
536 |
root |
1.24 |
if (expect_false (res)) |
537 |
root |
1.14 |
return res; |
538 |
|
|
} |
539 |
|
|
|
540 |
root |
1.24 |
if (expect_false (maxreqs && !--maxreqs)) |
541 |
root |
1.14 |
break; |
542 |
|
|
|
543 |
|
|
if (maxtime) |
544 |
|
|
{ |
545 |
|
|
gettimeofday (&tv_now, 0); |
546 |
|
|
|
547 |
|
|
if (tvdiff (&tv_start, &tv_now) >= maxtime) |
548 |
|
|
break; |
549 |
|
|
} |
550 |
|
|
} |
551 |
|
|
|
552 |
|
|
errno = EAGAIN; |
553 |
|
|
return -1; |
554 |
|
|
} |
555 |
|
|
|
556 |
|
|
static void etp_cancel (ETP_REQ *req) |
557 |
|
|
{ |
558 |
|
|
X_LOCK (wrklock); |
559 |
|
|
req->flags |= EIO_FLAG_CANCELLED; |
560 |
|
|
X_UNLOCK (wrklock); |
561 |
|
|
|
562 |
|
|
eio_grp_cancel (req); |
563 |
|
|
} |
564 |
|
|
|
565 |
|
|
static void etp_submit (ETP_REQ *req) |
566 |
|
|
{ |
567 |
|
|
req->pri -= ETP_PRI_MIN; |
568 |
|
|
|
569 |
root |
1.24 |
if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
570 |
|
|
if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
571 |
|
|
|
572 |
|
|
if (expect_false (req->type == EIO_GROUP)) |
573 |
|
|
{ |
574 |
|
|
/* I hope this is worth it :/ */ |
575 |
|
|
X_LOCK (reqlock); |
576 |
|
|
++nreqs; |
577 |
|
|
X_UNLOCK (reqlock); |
578 |
|
|
|
579 |
|
|
X_LOCK (reslock); |
580 |
|
|
|
581 |
|
|
++npending; |
582 |
|
|
|
583 |
|
|
if (!reqq_push (&res_queue, req) && want_poll_cb) |
584 |
|
|
want_poll_cb (); |
585 |
root |
1.14 |
|
586 |
root |
1.24 |
X_UNLOCK (reslock); |
587 |
|
|
} |
588 |
|
|
else |
589 |
|
|
{ |
590 |
|
|
X_LOCK (reqlock); |
591 |
|
|
++nreqs; |
592 |
|
|
++nready; |
593 |
|
|
reqq_push (&req_queue, req); |
594 |
|
|
X_COND_SIGNAL (reqwait); |
595 |
|
|
X_UNLOCK (reqlock); |
596 |
root |
1.14 |
|
597 |
root |
1.24 |
etp_maybe_start_thread (); |
598 |
|
|
} |
599 |
root |
1.14 |
} |
600 |
|
|
|
601 |
|
|
static void etp_set_max_poll_time (double nseconds) |
602 |
|
|
{ |
603 |
|
|
if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
604 |
root |
1.44 |
max_poll_time = nseconds * EIO_TICKS; |
605 |
root |
1.14 |
if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
606 |
|
|
} |
607 |
|
|
|
608 |
|
|
static void etp_set_max_poll_reqs (unsigned int maxreqs) |
609 |
|
|
{ |
610 |
|
|
if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
611 |
|
|
max_poll_reqs = maxreqs; |
612 |
|
|
if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
613 |
|
|
} |
614 |
root |
1.13 |
|
615 |
root |
1.14 |
static void etp_set_max_idle (unsigned int nthreads) |
616 |
|
|
{ |
617 |
|
|
if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
618 |
|
|
max_idle = nthreads <= 0 ? 1 : nthreads; |
619 |
|
|
if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
620 |
root |
1.13 |
} |
621 |
|
|
|
622 |
root |
1.14 |
static void etp_set_min_parallel (unsigned int nthreads) |
623 |
|
|
{ |
624 |
|
|
if (wanted < nthreads) |
625 |
|
|
wanted = nthreads; |
626 |
|
|
} |
627 |
|
|
|
628 |
|
|
static void etp_set_max_parallel (unsigned int nthreads) |
629 |
|
|
{ |
630 |
|
|
if (wanted > nthreads) |
631 |
|
|
wanted = nthreads; |
632 |
|
|
|
633 |
|
|
while (started > wanted) |
634 |
|
|
etp_end_thread (); |
635 |
|
|
} |
636 |
root |
1.13 |
|
637 |
|
|
/*****************************************************************************/ |
638 |
|
|
|
639 |
root |
1.2 |
static void grp_try_feed (eio_req *grp) |
640 |
root |
1.1 |
{ |
641 |
|
|
while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
642 |
|
|
{ |
643 |
root |
1.26 |
grp->flags &= ~EIO_FLAG_GROUPADD; |
644 |
root |
1.1 |
|
645 |
|
|
EIO_FEED (grp); |
646 |
|
|
|
647 |
|
|
/* stop if no progress has been made */ |
648 |
root |
1.26 |
if (!(grp->flags & EIO_FLAG_GROUPADD)) |
649 |
root |
1.1 |
{ |
650 |
|
|
grp->feed = 0; |
651 |
root |
1.2 |
break; |
652 |
root |
1.1 |
} |
653 |
|
|
} |
654 |
|
|
} |
655 |
|
|
|
656 |
|
|
static int grp_dec (eio_req *grp) |
657 |
|
|
{ |
658 |
|
|
--grp->size; |
659 |
|
|
|
660 |
|
|
/* call feeder, if applicable */ |
661 |
root |
1.2 |
grp_try_feed (grp); |
662 |
root |
1.1 |
|
663 |
|
|
/* finish, if done */ |
664 |
|
|
if (!grp->size && grp->int1) |
665 |
root |
1.2 |
return eio_finish (grp); |
666 |
root |
1.1 |
else |
667 |
|
|
return 0; |
668 |
|
|
} |
669 |
|
|
|
670 |
|
|
void eio_destroy (eio_req *req) |
671 |
|
|
{ |
672 |
root |
1.6 |
if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
673 |
|
|
if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
674 |
root |
1.1 |
|
675 |
|
|
EIO_DESTROY (req); |
676 |
|
|
} |
677 |
|
|
|
678 |
root |
1.2 |
static int eio_finish (eio_req *req) |
679 |
root |
1.1 |
{ |
680 |
|
|
int res = EIO_FINISH (req); |
681 |
|
|
|
682 |
|
|
if (req->grp) |
683 |
|
|
{ |
684 |
|
|
int res2; |
685 |
|
|
eio_req *grp = req->grp; |
686 |
|
|
|
687 |
|
|
/* unlink request */ |
688 |
|
|
if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
689 |
|
|
if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
690 |
|
|
|
691 |
|
|
if (grp->grp_first == req) |
692 |
|
|
grp->grp_first = req->grp_next; |
693 |
|
|
|
694 |
|
|
res2 = grp_dec (grp); |
695 |
|
|
|
696 |
|
|
if (!res && res2) |
697 |
|
|
res = res2; |
698 |
|
|
} |
699 |
|
|
|
700 |
|
|
eio_destroy (req); |
701 |
|
|
|
702 |
|
|
return res; |
703 |
|
|
} |
704 |
|
|
|
705 |
|
|
void eio_grp_cancel (eio_req *grp) |
706 |
|
|
{ |
707 |
|
|
for (grp = grp->grp_first; grp; grp = grp->grp_next) |
708 |
|
|
eio_cancel (grp); |
709 |
|
|
} |
710 |
|
|
|
711 |
|
|
void eio_cancel (eio_req *req) |
712 |
|
|
{ |
713 |
root |
1.14 |
etp_cancel (req); |
714 |
|
|
} |
715 |
root |
1.1 |
|
716 |
root |
1.14 |
void eio_submit (eio_req *req) |
717 |
|
|
{ |
718 |
|
|
etp_submit (req); |
719 |
root |
1.1 |
} |
720 |
|
|
|
721 |
root |
1.14 |
unsigned int eio_nreqs (void) |
722 |
root |
1.1 |
{ |
723 |
root |
1.14 |
return etp_nreqs (); |
724 |
root |
1.1 |
} |
725 |
|
|
|
726 |
root |
1.14 |
unsigned int eio_nready (void) |
727 |
root |
1.1 |
{ |
728 |
root |
1.14 |
return etp_nready (); |
729 |
root |
1.1 |
} |
730 |
|
|
|
731 |
root |
1.14 |
unsigned int eio_npending (void) |
732 |
root |
1.1 |
{ |
733 |
root |
1.14 |
return etp_npending (); |
734 |
root |
1.1 |
} |
735 |
|
|
|
736 |
root |
1.14 |
unsigned int eio_nthreads (void) |
737 |
root |
1.1 |
{ |
738 |
root |
1.14 |
return etp_nthreads (); |
739 |
root |
1.1 |
} |
740 |
|
|
|
741 |
|
|
void eio_set_max_poll_time (double nseconds) |
742 |
|
|
{ |
743 |
root |
1.14 |
etp_set_max_poll_time (nseconds); |
744 |
root |
1.1 |
} |
745 |
|
|
|
746 |
|
|
void eio_set_max_poll_reqs (unsigned int maxreqs) |
747 |
|
|
{ |
748 |
root |
1.14 |
etp_set_max_poll_reqs (maxreqs); |
749 |
root |
1.1 |
} |
750 |
|
|
|
751 |
|
|
void eio_set_max_idle (unsigned int nthreads) |
752 |
|
|
{ |
753 |
root |
1.14 |
etp_set_max_idle (nthreads); |
754 |
root |
1.1 |
} |
755 |
|
|
|
756 |
|
|
void eio_set_min_parallel (unsigned int nthreads) |
757 |
|
|
{ |
758 |
root |
1.14 |
etp_set_min_parallel (nthreads); |
759 |
root |
1.1 |
} |
760 |
|
|
|
761 |
|
|
void eio_set_max_parallel (unsigned int nthreads) |
762 |
|
|
{ |
763 |
root |
1.14 |
etp_set_max_parallel (nthreads); |
764 |
root |
1.1 |
} |
765 |
|
|
|
766 |
|
|
int eio_poll (void) |
767 |
|
|
{ |
768 |
root |
1.14 |
return etp_poll (); |
769 |
root |
1.1 |
} |
770 |
|
|
|
771 |
|
|
/*****************************************************************************/ |
772 |
|
|
/* work around various missing functions */ |
773 |
|
|
|
774 |
|
|
#if !HAVE_PREADWRITE |
775 |
root |
1.27 |
# undef pread |
776 |
|
|
# undef pwrite |
777 |
root |
1.9 |
# define pread eio__pread |
778 |
|
|
# define pwrite eio__pwrite |
779 |
root |
1.1 |
|
780 |
root |
1.9 |
static ssize_t |
781 |
|
|
eio__pread (int fd, void *buf, size_t count, off_t offset) |
782 |
root |
1.1 |
{ |
783 |
|
|
ssize_t res; |
784 |
|
|
off_t ooffset; |
785 |
|
|
|
786 |
|
|
X_LOCK (preadwritelock); |
787 |
|
|
ooffset = lseek (fd, 0, SEEK_CUR); |
788 |
|
|
lseek (fd, offset, SEEK_SET); |
789 |
|
|
res = read (fd, buf, count); |
790 |
|
|
lseek (fd, ooffset, SEEK_SET); |
791 |
|
|
X_UNLOCK (preadwritelock); |
792 |
|
|
|
793 |
|
|
return res; |
794 |
|
|
} |
795 |
|
|
|
796 |
root |
1.9 |
static ssize_t |
797 |
|
|
eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
798 |
root |
1.1 |
{ |
799 |
|
|
ssize_t res; |
800 |
|
|
off_t ooffset; |
801 |
|
|
|
802 |
|
|
X_LOCK (preadwritelock); |
803 |
|
|
ooffset = lseek (fd, 0, SEEK_CUR); |
804 |
|
|
lseek (fd, offset, SEEK_SET); |
805 |
|
|
res = write (fd, buf, count); |
806 |
root |
1.30 |
lseek (fd, ooffset, SEEK_SET); |
807 |
root |
1.1 |
X_UNLOCK (preadwritelock); |
808 |
|
|
|
809 |
|
|
return res; |
810 |
|
|
} |
811 |
|
|
#endif |
812 |
|
|
|
813 |
|
|
#ifndef HAVE_FUTIMES |
814 |
|
|
|
815 |
root |
1.27 |
# undef utimes |
816 |
|
|
# undef futimes |
817 |
root |
1.9 |
# define utimes(path,times) eio__utimes (path, times) |
818 |
|
|
# define futimes(fd,times) eio__futimes (fd, times) |
819 |
root |
1.1 |
|
820 |
root |
1.9 |
static int |
821 |
|
|
eio__utimes (const char *filename, const struct timeval times[2]) |
822 |
root |
1.1 |
{ |
823 |
|
|
if (times) |
824 |
|
|
{ |
825 |
|
|
struct utimbuf buf; |
826 |
|
|
|
827 |
|
|
buf.actime = times[0].tv_sec; |
828 |
|
|
buf.modtime = times[1].tv_sec; |
829 |
|
|
|
830 |
|
|
return utime (filename, &buf); |
831 |
|
|
} |
832 |
|
|
else |
833 |
|
|
return utime (filename, 0); |
834 |
|
|
} |
835 |
|
|
|
836 |
root |
1.9 |
static int eio__futimes (int fd, const struct timeval tv[2]) |
837 |
root |
1.1 |
{ |
838 |
|
|
errno = ENOSYS; |
839 |
|
|
return -1; |
840 |
|
|
} |
841 |
|
|
|
842 |
|
|
#endif |
843 |
|
|
|
844 |
|
|
#if !HAVE_FDATASYNC |
845 |
root |
1.27 |
# undef fdatasync |
846 |
|
|
# define fdatasync(fd) fsync (fd) |
847 |
root |
1.1 |
#endif |
848 |
|
|
|
849 |
root |
1.27 |
/* sync_file_range always needs emulation */ |
850 |
|
|
int |
851 |
|
|
eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
852 |
|
|
{ |
853 |
|
|
#if HAVE_SYNC_FILE_RANGE |
854 |
|
|
int res; |
855 |
|
|
|
856 |
|
|
if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE |
857 |
|
|
|| EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE |
858 |
|
|
|| EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER) |
859 |
|
|
{ |
860 |
|
|
flags = 0 |
861 |
|
|
| (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0) |
862 |
|
|
| (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0) |
863 |
|
|
| (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0); |
864 |
|
|
} |
865 |
|
|
|
866 |
|
|
res = sync_file_range (fd, offset, nbytes, flags); |
867 |
|
|
|
868 |
root |
1.28 |
if (!res || errno != ENOSYS) |
869 |
root |
1.27 |
return res; |
870 |
|
|
#endif |
871 |
|
|
|
872 |
|
|
/* even though we could play tricks with the flags, it's better to always |
873 |
root |
1.43 |
* call fdatasync, as that matches the expectation of its users best */ |
874 |
root |
1.27 |
return fdatasync (fd); |
875 |
|
|
} |
876 |
|
|
|
877 |
root |
1.1 |
#if !HAVE_READAHEAD |
878 |
root |
1.27 |
# undef readahead |
879 |
root |
1.9 |
# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
880 |
root |
1.1 |
|
881 |
root |
1.9 |
static ssize_t |
882 |
root |
1.17 |
eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
883 |
root |
1.1 |
{ |
884 |
|
|
size_t todo = count; |
885 |
|
|
dBUF; |
886 |
|
|
|
887 |
|
|
while (todo > 0) |
888 |
|
|
{ |
889 |
|
|
size_t len = todo < EIO_BUFSIZE ? todo : EIO_BUFSIZE; |
890 |
|
|
|
891 |
root |
1.3 |
pread (fd, eio_buf, len, offset); |
892 |
root |
1.1 |
offset += len; |
893 |
|
|
todo -= len; |
894 |
|
|
} |
895 |
|
|
|
896 |
|
|
errno = 0; |
897 |
|
|
return count; |
898 |
|
|
} |
899 |
|
|
|
900 |
|
|
#endif |
901 |
|
|
|
902 |
|
|
/* sendfile always needs emulation */ |
903 |
root |
1.9 |
static ssize_t |
904 |
root |
1.14 |
eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
905 |
root |
1.1 |
{ |
906 |
|
|
ssize_t res; |
907 |
|
|
|
908 |
|
|
if (!count) |
909 |
|
|
return 0; |
910 |
|
|
|
911 |
|
|
#if HAVE_SENDFILE |
912 |
|
|
# if __linux |
913 |
|
|
res = sendfile (ofd, ifd, &offset, count); |
914 |
|
|
|
915 |
|
|
# elif __freebsd |
916 |
|
|
/* |
917 |
|
|
* Of course, the freebsd sendfile is a dire hack with no thoughts |
918 |
|
|
* wasted on making it similar to other I/O functions. |
919 |
|
|
*/ |
920 |
|
|
{ |
921 |
|
|
off_t sbytes; |
922 |
|
|
res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
923 |
|
|
|
924 |
|
|
if (res < 0 && sbytes) |
925 |
|
|
/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
926 |
|
|
res = sbytes; |
927 |
|
|
} |
928 |
|
|
|
929 |
root |
1.45 |
# elif defined __APPLE__ |
930 |
|
|
|
931 |
|
|
{ |
932 |
|
|
off_t bytes = count; |
933 |
|
|
res = sendfile (ifd, ofd, offset, &bytes, 0, 0); |
934 |
|
|
|
935 |
|
|
if (res < 0 && errno == EAGAIN && bytes) |
936 |
|
|
res = sbytes; |
937 |
|
|
} |
938 |
|
|
|
939 |
root |
1.1 |
# elif __hpux |
940 |
|
|
res = sendfile (ofd, ifd, offset, count, 0, 0); |
941 |
|
|
|
942 |
|
|
# elif __solaris |
943 |
|
|
{ |
944 |
|
|
struct sendfilevec vec; |
945 |
|
|
size_t sbytes; |
946 |
|
|
|
947 |
|
|
vec.sfv_fd = ifd; |
948 |
|
|
vec.sfv_flag = 0; |
949 |
|
|
vec.sfv_off = offset; |
950 |
|
|
vec.sfv_len = count; |
951 |
|
|
|
952 |
|
|
res = sendfilev (ofd, &vec, 1, &sbytes); |
953 |
|
|
|
954 |
|
|
if (res < 0 && sbytes) |
955 |
|
|
res = sbytes; |
956 |
|
|
} |
957 |
|
|
|
958 |
|
|
# endif |
959 |
root |
1.45 |
#elif defined _WIN32 |
960 |
|
|
|
961 |
|
|
/* does not work, just for documentation of what would need to be done */ |
962 |
|
|
{ |
963 |
|
|
HANDLE h = TO_SOCKET (ifd); |
964 |
|
|
SetFilePointer (h, offset, 0, FILE_BEGIN); |
965 |
|
|
res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); |
966 |
|
|
} |
967 |
|
|
|
968 |
root |
1.1 |
#else |
969 |
|
|
res = -1; |
970 |
|
|
errno = ENOSYS; |
971 |
|
|
#endif |
972 |
|
|
|
973 |
|
|
if (res < 0 |
974 |
|
|
&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
975 |
|
|
#if __solaris |
976 |
|
|
|| errno == EAFNOSUPPORT || errno == EPROTOTYPE |
977 |
|
|
#endif |
978 |
|
|
) |
979 |
|
|
) |
980 |
|
|
{ |
981 |
|
|
/* emulate sendfile. this is a major pain in the ass */ |
982 |
|
|
dBUF; |
983 |
|
|
|
984 |
|
|
res = 0; |
985 |
|
|
|
986 |
|
|
while (count) |
987 |
|
|
{ |
988 |
|
|
ssize_t cnt; |
989 |
|
|
|
990 |
|
|
cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); |
991 |
|
|
|
992 |
|
|
if (cnt <= 0) |
993 |
|
|
{ |
994 |
|
|
if (cnt && !res) res = -1; |
995 |
|
|
break; |
996 |
|
|
} |
997 |
|
|
|
998 |
|
|
cnt = write (ofd, eio_buf, cnt); |
999 |
|
|
|
1000 |
|
|
if (cnt <= 0) |
1001 |
|
|
{ |
1002 |
|
|
if (cnt && !res) res = -1; |
1003 |
|
|
break; |
1004 |
|
|
} |
1005 |
|
|
|
1006 |
|
|
offset += cnt; |
1007 |
|
|
res += cnt; |
1008 |
|
|
count -= cnt; |
1009 |
|
|
} |
1010 |
|
|
} |
1011 |
|
|
|
1012 |
|
|
return res; |
1013 |
|
|
} |
1014 |
|
|
|
1015 |
root |
1.37 |
static signed char |
1016 |
|
|
eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1017 |
|
|
{ |
1018 |
root |
1.42 |
return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ |
1019 |
root |
1.39 |
: a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0; |
1020 |
root |
1.37 |
} |
1021 |
|
|
|
1022 |
root |
1.39 |
#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 |
1023 |
|
|
|
1024 |
root |
1.42 |
#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
1025 |
|
|
#define EIO_SORT_FAST 60 /* when to only use insertion sort */ |
1026 |
root |
1.37 |
|
1027 |
|
|
static void |
1028 |
root |
1.42 |
eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits) |
1029 |
root |
1.31 |
{ |
1030 |
root |
1.42 |
unsigned char bits [9 + sizeof (ino_t) * 8]; |
1031 |
|
|
unsigned char *bit = bits; |
1032 |
|
|
|
1033 |
|
|
assert (CHAR_BIT == 8); |
1034 |
|
|
assert (sizeof (eio_dirent) * 8 < 256); |
1035 |
|
|
assert (offsetof (eio_dirent, inode)); /* we use 0 as sentinel */ |
1036 |
|
|
assert (offsetof (eio_dirent, score)); /* we use 0 as sentinel */ |
1037 |
|
|
|
1038 |
|
|
if (size <= EIO_SORT_FAST) |
1039 |
|
|
return; |
1040 |
|
|
|
1041 |
|
|
/* first prepare an array of bits to test in our radix sort */ |
1042 |
|
|
/* try to take endianness into account, as well as differences in ino_t sizes */ |
1043 |
|
|
/* inode_bits must contain all inodes ORed together */ |
1044 |
|
|
/* which is used to skip bits that are 0 everywhere, which is very common */ |
1045 |
|
|
{ |
1046 |
|
|
ino_t endianness; |
1047 |
|
|
int i, j; |
1048 |
root |
1.39 |
|
1049 |
root |
1.42 |
/* we store the byte offset of byte n into byte n of "endianness" */ |
1050 |
|
|
for (i = 0; i < sizeof (ino_t); ++i) |
1051 |
|
|
((unsigned char *)&endianness)[i] = i; |
1052 |
root |
1.37 |
|
1053 |
root |
1.42 |
*bit++ = 0; |
1054 |
root |
1.37 |
|
1055 |
root |
1.42 |
for (i = 0; i < sizeof (ino_t); ++i) |
1056 |
|
|
{ |
1057 |
|
|
/* shifting off the byte offsets out of "endianness" */ |
1058 |
|
|
int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8; |
1059 |
|
|
endianness >>= 8; |
1060 |
|
|
|
1061 |
|
|
for (j = 0; j < 8; ++j) |
1062 |
|
|
if (inode_bits & (((ino_t)1) << (i * 8 + j))) |
1063 |
|
|
*bit++ = offs + j; |
1064 |
|
|
} |
1065 |
root |
1.38 |
|
1066 |
root |
1.42 |
for (j = 0; j < 8; ++j) |
1067 |
|
|
if (score_bits & (1 << j)) |
1068 |
|
|
*bit++ = offsetof (eio_dirent, score) * 8 + j; |
1069 |
|
|
} |
1070 |
root |
1.37 |
|
1071 |
root |
1.42 |
/* now actually do the sorting (a variant of MSD radix sort) */ |
1072 |
|
|
{ |
1073 |
|
|
eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base; |
1074 |
|
|
eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end; |
1075 |
|
|
unsigned char *bit_stk [9 + sizeof (ino_t) * 8]; |
1076 |
|
|
int stk_idx = 0; |
1077 |
|
|
|
1078 |
|
|
base_stk [stk_idx] = dents; |
1079 |
|
|
end_stk [stk_idx] = dents + size; |
1080 |
|
|
bit_stk [stk_idx] = bit - 1; |
1081 |
root |
1.37 |
|
1082 |
root |
1.42 |
do |
1083 |
|
|
{ |
1084 |
|
|
base = base_stk [stk_idx]; |
1085 |
|
|
end = end_stk [stk_idx]; |
1086 |
|
|
bit = bit_stk [stk_idx]; |
1087 |
root |
1.37 |
|
1088 |
root |
1.42 |
for (;;) |
1089 |
|
|
{ |
1090 |
|
|
unsigned char O = *bit >> 3; |
1091 |
|
|
unsigned char M = 1 << (*bit & 7); |
1092 |
root |
1.31 |
|
1093 |
root |
1.42 |
eio_dirent *a = base; |
1094 |
|
|
eio_dirent *b = end; |
1095 |
root |
1.37 |
|
1096 |
root |
1.42 |
if (b - a < EIO_SORT_CUTOFF) |
1097 |
|
|
break; |
1098 |
root |
1.37 |
|
1099 |
root |
1.42 |
/* now bit-partition the array on the bit */ |
1100 |
|
|
/* this ugly asymmetric loop seems to perform much better than typical */ |
1101 |
|
|
/* partition algos found in the literature */ |
1102 |
|
|
do |
1103 |
|
|
if (!(((unsigned char *)a)[O] & M)) |
1104 |
|
|
++a; |
1105 |
|
|
else if (!(((unsigned char *)--b)[O] & M)) |
1106 |
root |
1.38 |
{ |
1107 |
root |
1.42 |
eio_dirent tmp = *a; *a = *b; *b = tmp; |
1108 |
|
|
++a; |
1109 |
|
|
} |
1110 |
|
|
while (b > a); |
1111 |
|
|
|
1112 |
|
|
/* next bit, or stop, if no bits left in this path */ |
1113 |
|
|
if (!*--bit) |
1114 |
|
|
break; |
1115 |
root |
1.37 |
|
1116 |
root |
1.42 |
base_stk [stk_idx] = a; |
1117 |
|
|
end_stk [stk_idx] = end; |
1118 |
|
|
bit_stk [stk_idx] = bit; |
1119 |
|
|
++stk_idx; |
1120 |
|
|
|
1121 |
|
|
end = a; |
1122 |
|
|
} |
1123 |
|
|
} |
1124 |
|
|
while (stk_idx--); |
1125 |
|
|
} |
1126 |
|
|
} |
1127 |
root |
1.37 |
|
1128 |
root |
1.42 |
static void |
1129 |
|
|
eio_dent_insertion_sort (eio_dirent *dents, int size) |
1130 |
|
|
{ |
1131 |
root |
1.39 |
/* first move the smallest element to the front, to act as a sentinel */ |
1132 |
|
|
{ |
1133 |
root |
1.41 |
int i; |
1134 |
|
|
eio_dirent *min = dents; |
1135 |
|
|
|
1136 |
root |
1.42 |
/* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */ |
1137 |
|
|
for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; ) |
1138 |
root |
1.41 |
if (EIO_DENT_CMP (dents [i], <, *min)) |
1139 |
|
|
min = &dents [i]; |
1140 |
root |
1.39 |
|
1141 |
|
|
/* swap elements 0 and j (minimum) */ |
1142 |
|
|
{ |
1143 |
root |
1.41 |
eio_dirent tmp = *dents; *dents = *min; *min = tmp; |
1144 |
root |
1.39 |
} |
1145 |
|
|
} |
1146 |
|
|
|
1147 |
root |
1.42 |
/* then do standard insertion sort, assuming that all elements are >= dents [0] */ |
1148 |
root |
1.41 |
{ |
1149 |
|
|
eio_dirent *i, *j; |
1150 |
|
|
|
1151 |
|
|
for (i = dents + 1; i < dents + size; ++i) |
1152 |
|
|
{ |
1153 |
|
|
eio_dirent value = *i; |
1154 |
root |
1.37 |
|
1155 |
root |
1.41 |
for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j) |
1156 |
|
|
j [1] = j [0]; |
1157 |
root |
1.37 |
|
1158 |
root |
1.41 |
j [1] = value; |
1159 |
|
|
} |
1160 |
|
|
} |
1161 |
root |
1.31 |
} |
1162 |
|
|
|
1163 |
root |
1.42 |
static void |
1164 |
|
|
eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits) |
1165 |
|
|
{ |
1166 |
|
|
if (size <= 1) |
1167 |
|
|
return; /* our insertion sort relies on size > 0 */ |
1168 |
|
|
|
1169 |
|
|
/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */ |
1170 |
|
|
/* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */ |
1171 |
|
|
eio_dent_radix_sort (dents, size, score_bits, inode_bits); |
1172 |
|
|
|
1173 |
|
|
/* use an insertion sort at the end, or for small arrays, */ |
1174 |
|
|
/* as insertion sort is more efficient for small partitions */ |
1175 |
|
|
eio_dent_insertion_sort (dents, size); |
1176 |
|
|
} |
1177 |
|
|
|
1178 |
root |
1.1 |
/* read a full directory */ |
1179 |
root |
1.9 |
static void |
1180 |
root |
1.14 |
eio__scandir (eio_req *req, etp_worker *self) |
1181 |
root |
1.1 |
{ |
1182 |
|
|
DIR *dirp; |
1183 |
|
|
EIO_STRUCT_DIRENT *entp; |
1184 |
root |
1.37 |
char *name, *names; |
1185 |
root |
1.31 |
int namesalloc = 4096; |
1186 |
|
|
int namesoffs = 0; |
1187 |
|
|
int flags = req->int1; |
1188 |
|
|
eio_dirent *dents = 0; |
1189 |
|
|
int dentalloc = 128; |
1190 |
|
|
int dentoffs = 0; |
1191 |
root |
1.42 |
ino_t inode_bits = 0; |
1192 |
root |
1.31 |
|
1193 |
|
|
req->result = -1; |
1194 |
|
|
|
1195 |
|
|
if (!(flags & EIO_READDIR_DENTS)) |
1196 |
|
|
flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
1197 |
root |
1.1 |
|
1198 |
root |
1.14 |
X_LOCK (wrklock); |
1199 |
root |
1.20 |
/* the corresponding closedir is in ETP_WORKER_CLEAR */ |
1200 |
root |
1.1 |
self->dirp = dirp = opendir (req->ptr1); |
1201 |
root |
1.31 |
req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1202 |
root |
1.42 |
req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1203 |
|
|
req->ptr2 = names = malloc (namesalloc); |
1204 |
root |
1.14 |
X_UNLOCK (wrklock); |
1205 |
root |
1.1 |
|
1206 |
root |
1.31 |
if (dirp && names && (!flags || dents)) |
1207 |
root |
1.1 |
for (;;) |
1208 |
|
|
{ |
1209 |
|
|
errno = 0; |
1210 |
root |
1.16 |
entp = readdir (dirp); |
1211 |
root |
1.1 |
|
1212 |
|
|
if (!entp) |
1213 |
root |
1.31 |
{ |
1214 |
|
|
if (errno) |
1215 |
|
|
break; |
1216 |
|
|
|
1217 |
|
|
/* sort etc. */ |
1218 |
|
|
req->int1 = flags; |
1219 |
|
|
req->result = dentoffs; |
1220 |
|
|
|
1221 |
root |
1.42 |
if (flags & EIO_READDIR_STAT_ORDER) |
1222 |
|
|
eio_dent_sort (dents, dentoffs, 0, inode_bits); /* sort by inode exclusively */ |
1223 |
root |
1.32 |
else if (flags & EIO_READDIR_DIRS_FIRST) |
1224 |
root |
1.42 |
if (flags & EIO_READDIR_FOUND_UNKNOWN) |
1225 |
|
|
eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
1226 |
|
|
else |
1227 |
|
|
{ |
1228 |
|
|
/* in this case, all is known, and we just put dirs first and sort them */ |
1229 |
|
|
eio_dirent *oth = dents + dentoffs; |
1230 |
|
|
eio_dirent *dir = dents; |
1231 |
|
|
|
1232 |
|
|
/* now partition dirs to the front, and non-dirs to the back */ |
1233 |
|
|
/* by walking from both sides and swapping if necessary */ |
1234 |
|
|
/* also clear score, so it doesn't influence sorting */ |
1235 |
|
|
while (oth > dir) |
1236 |
|
|
{ |
1237 |
|
|
if (dir->type == EIO_DT_DIR) |
1238 |
root |
1.41 |
++dir; |
1239 |
root |
1.42 |
else if ((--oth)->type == EIO_DT_DIR) |
1240 |
|
|
{ |
1241 |
|
|
eio_dirent tmp = *dir; *dir = *oth; *oth = tmp; |
1242 |
|
|
|
1243 |
|
|
++dir; |
1244 |
|
|
} |
1245 |
|
|
} |
1246 |
root |
1.31 |
|
1247 |
root |
1.42 |
/* now sort the dirs only */ |
1248 |
|
|
eio_dent_sort (dents, dir - dents, 0, inode_bits); |
1249 |
|
|
} |
1250 |
root |
1.31 |
|
1251 |
|
|
break; |
1252 |
|
|
} |
1253 |
root |
1.1 |
|
1254 |
root |
1.32 |
/* now add the entry to our list(s) */ |
1255 |
root |
1.1 |
name = entp->d_name; |
1256 |
|
|
|
1257 |
root |
1.32 |
/* skip . and .. entries */ |
1258 |
root |
1.1 |
if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1259 |
|
|
{ |
1260 |
root |
1.33 |
int len = D_NAMLEN (entp) + 1; |
1261 |
root |
1.1 |
|
1262 |
root |
1.31 |
while (expect_false (namesoffs + len > namesalloc)) |
1263 |
root |
1.1 |
{ |
1264 |
root |
1.31 |
namesalloc *= 2; |
1265 |
root |
1.14 |
X_LOCK (wrklock); |
1266 |
root |
1.42 |
req->ptr2 = names = realloc (names, namesalloc); |
1267 |
root |
1.14 |
X_UNLOCK (wrklock); |
1268 |
root |
1.1 |
|
1269 |
|
|
if (!names) |
1270 |
|
|
break; |
1271 |
|
|
} |
1272 |
|
|
|
1273 |
root |
1.31 |
memcpy (names + namesoffs, name, len); |
1274 |
|
|
|
1275 |
|
|
if (dents) |
1276 |
|
|
{ |
1277 |
|
|
struct eio_dirent *ent; |
1278 |
|
|
|
1279 |
|
|
if (expect_false (dentoffs == dentalloc)) |
1280 |
|
|
{ |
1281 |
|
|
dentalloc *= 2; |
1282 |
|
|
X_LOCK (wrklock); |
1283 |
root |
1.42 |
req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
1284 |
root |
1.31 |
X_UNLOCK (wrklock); |
1285 |
|
|
|
1286 |
|
|
if (!dents) |
1287 |
|
|
break; |
1288 |
|
|
} |
1289 |
|
|
|
1290 |
|
|
ent = dents + dentoffs; |
1291 |
|
|
|
1292 |
root |
1.42 |
ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */ |
1293 |
root |
1.31 |
ent->namelen = len - 1; |
1294 |
root |
1.42 |
ent->inode = D_INO (entp); |
1295 |
|
|
|
1296 |
|
|
inode_bits |= ent->inode; |
1297 |
root |
1.31 |
|
1298 |
|
|
switch (D_TYPE (entp)) |
1299 |
|
|
{ |
1300 |
|
|
default: |
1301 |
|
|
ent->type = EIO_DT_UNKNOWN; |
1302 |
|
|
flags |= EIO_READDIR_FOUND_UNKNOWN; |
1303 |
|
|
break; |
1304 |
|
|
|
1305 |
|
|
#ifdef DT_FIFO |
1306 |
|
|
case DT_FIFO: ent->type = EIO_DT_FIFO; break; |
1307 |
|
|
#endif |
1308 |
|
|
#ifdef DT_CHR |
1309 |
|
|
case DT_CHR: ent->type = EIO_DT_CHR; break; |
1310 |
|
|
#endif |
1311 |
root |
1.33 |
#ifdef DT_MPC |
1312 |
|
|
case DT_MPC: ent->type = EIO_DT_MPC; break; |
1313 |
|
|
#endif |
1314 |
root |
1.32 |
#ifdef DT_DIR |
1315 |
root |
1.31 |
case DT_DIR: ent->type = EIO_DT_DIR; break; |
1316 |
|
|
#endif |
1317 |
root |
1.33 |
#ifdef DT_NAM |
1318 |
|
|
case DT_NAM: ent->type = EIO_DT_NAM; break; |
1319 |
|
|
#endif |
1320 |
root |
1.32 |
#ifdef DT_BLK |
1321 |
root |
1.31 |
case DT_BLK: ent->type = EIO_DT_BLK; break; |
1322 |
|
|
#endif |
1323 |
root |
1.33 |
#ifdef DT_MPB |
1324 |
|
|
case DT_MPB: ent->type = EIO_DT_MPB; break; |
1325 |
|
|
#endif |
1326 |
root |
1.32 |
#ifdef DT_REG |
1327 |
root |
1.31 |
case DT_REG: ent->type = EIO_DT_REG; break; |
1328 |
|
|
#endif |
1329 |
root |
1.33 |
#ifdef DT_NWK |
1330 |
|
|
case DT_NWK: ent->type = EIO_DT_NWK; break; |
1331 |
|
|
#endif |
1332 |
|
|
#ifdef DT_CMP |
1333 |
|
|
case DT_CMP: ent->type = EIO_DT_CMP; break; |
1334 |
|
|
#endif |
1335 |
root |
1.32 |
#ifdef DT_LNK |
1336 |
root |
1.31 |
case DT_LNK: ent->type = EIO_DT_LNK; break; |
1337 |
|
|
#endif |
1338 |
|
|
#ifdef DT_SOCK |
1339 |
|
|
case DT_SOCK: ent->type = EIO_DT_SOCK; break; |
1340 |
|
|
#endif |
1341 |
root |
1.33 |
#ifdef DT_DOOR |
1342 |
|
|
case DT_DOOR: ent->type = EIO_DT_DOOR; break; |
1343 |
|
|
#endif |
1344 |
root |
1.31 |
#ifdef DT_WHT |
1345 |
|
|
case DT_WHT: ent->type = EIO_DT_WHT; break; |
1346 |
|
|
#endif |
1347 |
|
|
} |
1348 |
|
|
|
1349 |
root |
1.42 |
ent->score = 7; |
1350 |
root |
1.31 |
|
1351 |
|
|
if (flags & EIO_READDIR_DIRS_FIRST) |
1352 |
|
|
{ |
1353 |
|
|
if (ent->type == EIO_DT_UNKNOWN) |
1354 |
|
|
{ |
1355 |
|
|
if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ |
1356 |
root |
1.42 |
ent->score = 1; |
1357 |
root |
1.31 |
else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */ |
1358 |
root |
1.42 |
ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */ |
1359 |
root |
1.31 |
} |
1360 |
root |
1.33 |
else if (ent->type == EIO_DT_DIR) |
1361 |
root |
1.42 |
ent->score = 0; |
1362 |
root |
1.31 |
} |
1363 |
|
|
} |
1364 |
|
|
|
1365 |
|
|
namesoffs += len; |
1366 |
|
|
++dentoffs; |
1367 |
root |
1.1 |
} |
1368 |
root |
1.36 |
|
1369 |
|
|
if (EIO_CANCELLED (req)) |
1370 |
|
|
{ |
1371 |
|
|
errno = ECANCELED; |
1372 |
|
|
break; |
1373 |
|
|
} |
1374 |
root |
1.1 |
} |
1375 |
|
|
} |
1376 |
|
|
|
1377 |
root |
1.23 |
#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
1378 |
root |
1.27 |
# undef msync |
1379 |
root |
1.28 |
# define msync(a,b,c) ((errno = ENOSYS), -1) |
1380 |
root |
1.23 |
#endif |
1381 |
|
|
|
1382 |
|
|
int |
1383 |
|
|
eio__mtouch (void *mem, size_t len, int flags) |
1384 |
|
|
{ |
1385 |
|
|
intptr_t addr = (intptr_t)mem; |
1386 |
|
|
intptr_t end = addr + len; |
1387 |
|
|
#ifdef PAGESIZE |
1388 |
|
|
const intptr_t page = PAGESIZE; |
1389 |
|
|
#else |
1390 |
|
|
static intptr_t page; |
1391 |
|
|
|
1392 |
|
|
if (!page) |
1393 |
|
|
page = sysconf (_SC_PAGESIZE); |
1394 |
|
|
#endif |
1395 |
|
|
|
1396 |
root |
1.45 |
/* round down to start of page, although this is probably useless */ |
1397 |
root |
1.23 |
addr &= ~(page - 1); /* assume page size is always a power of two */ |
1398 |
|
|
|
1399 |
|
|
if (addr < end) |
1400 |
|
|
if (flags) /* modify */ |
1401 |
|
|
do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); |
1402 |
|
|
else |
1403 |
|
|
do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); |
1404 |
|
|
|
1405 |
|
|
return 0; |
1406 |
|
|
} |
1407 |
|
|
|
1408 |
root |
1.1 |
/*****************************************************************************/ |
1409 |
|
|
|
1410 |
root |
1.6 |
#define ALLOC(len) \ |
1411 |
|
|
if (!req->ptr2) \ |
1412 |
|
|
{ \ |
1413 |
root |
1.14 |
X_LOCK (wrklock); \ |
1414 |
root |
1.7 |
req->flags |= EIO_FLAG_PTR2_FREE; \ |
1415 |
root |
1.14 |
X_UNLOCK (wrklock); \ |
1416 |
root |
1.7 |
req->ptr2 = malloc (len); \ |
1417 |
|
|
if (!req->ptr2) \ |
1418 |
|
|
{ \ |
1419 |
|
|
errno = ENOMEM; \ |
1420 |
|
|
req->result = -1; \ |
1421 |
|
|
break; \ |
1422 |
|
|
} \ |
1423 |
root |
1.6 |
} |
1424 |
|
|
|
1425 |
root |
1.14 |
X_THREAD_PROC (etp_proc) |
1426 |
root |
1.1 |
{ |
1427 |
root |
1.14 |
ETP_REQ *req; |
1428 |
root |
1.1 |
struct timespec ts; |
1429 |
root |
1.14 |
etp_worker *self = (etp_worker *)thr_arg; |
1430 |
root |
1.1 |
|
1431 |
|
|
/* try to distribute timeouts somewhat randomly */ |
1432 |
|
|
ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
1433 |
|
|
|
1434 |
|
|
for (;;) |
1435 |
|
|
{ |
1436 |
|
|
X_LOCK (reqlock); |
1437 |
|
|
|
1438 |
|
|
for (;;) |
1439 |
|
|
{ |
1440 |
|
|
self->req = req = reqq_shift (&req_queue); |
1441 |
|
|
|
1442 |
|
|
if (req) |
1443 |
|
|
break; |
1444 |
|
|
|
1445 |
|
|
++idle; |
1446 |
|
|
|
1447 |
root |
1.14 |
ts.tv_sec = time (0) + IDLE_TIMEOUT; |
1448 |
root |
1.1 |
if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1449 |
|
|
{ |
1450 |
|
|
if (idle > max_idle) |
1451 |
|
|
{ |
1452 |
|
|
--idle; |
1453 |
|
|
X_UNLOCK (reqlock); |
1454 |
root |
1.14 |
X_LOCK (wrklock); |
1455 |
root |
1.1 |
--started; |
1456 |
root |
1.14 |
X_UNLOCK (wrklock); |
1457 |
root |
1.1 |
goto quit; |
1458 |
|
|
} |
1459 |
|
|
|
1460 |
|
|
/* we are allowed to idle, so do so without any timeout */ |
1461 |
|
|
X_COND_WAIT (reqwait, reqlock); |
1462 |
|
|
} |
1463 |
|
|
|
1464 |
|
|
--idle; |
1465 |
|
|
} |
1466 |
|
|
|
1467 |
|
|
--nready; |
1468 |
|
|
|
1469 |
|
|
X_UNLOCK (reqlock); |
1470 |
|
|
|
1471 |
root |
1.15 |
if (req->type < 0) |
1472 |
|
|
goto quit; |
1473 |
root |
1.1 |
|
1474 |
|
|
if (!EIO_CANCELLED (req)) |
1475 |
root |
1.15 |
ETP_EXECUTE (self, req); |
1476 |
root |
1.1 |
|
1477 |
|
|
X_LOCK (reslock); |
1478 |
|
|
|
1479 |
|
|
++npending; |
1480 |
|
|
|
1481 |
root |
1.14 |
if (!reqq_push (&res_queue, req) && want_poll_cb) |
1482 |
|
|
want_poll_cb (); |
1483 |
root |
1.1 |
|
1484 |
|
|
self->req = 0; |
1485 |
root |
1.14 |
etp_worker_clear (self); |
1486 |
root |
1.1 |
|
1487 |
|
|
X_UNLOCK (reslock); |
1488 |
|
|
} |
1489 |
|
|
|
1490 |
|
|
quit: |
1491 |
root |
1.14 |
X_LOCK (wrklock); |
1492 |
|
|
etp_worker_free (self); |
1493 |
|
|
X_UNLOCK (wrklock); |
1494 |
root |
1.1 |
|
1495 |
|
|
return 0; |
1496 |
|
|
} |
1497 |
|
|
|
1498 |
|
|
/*****************************************************************************/ |
1499 |
|
|
|
1500 |
|
|
int eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1501 |
|
|
{ |
1502 |
root |
1.19 |
return etp_init (want_poll, done_poll); |
1503 |
root |
1.1 |
} |
1504 |
|
|
|
1505 |
root |
1.6 |
static void eio_api_destroy (eio_req *req) |
1506 |
|
|
{ |
1507 |
|
|
free (req); |
1508 |
|
|
} |
1509 |
|
|
|
1510 |
|
|
#define REQ(rtype) \ |
1511 |
|
|
eio_req *req; \ |
1512 |
|
|
\ |
1513 |
|
|
req = (eio_req *)calloc (1, sizeof *req); \ |
1514 |
|
|
if (!req) \ |
1515 |
|
|
return 0; \ |
1516 |
|
|
\ |
1517 |
root |
1.11 |
req->type = rtype; \ |
1518 |
|
|
req->pri = pri; \ |
1519 |
|
|
req->finish = cb; \ |
1520 |
|
|
req->data = data; \ |
1521 |
root |
1.6 |
req->destroy = eio_api_destroy; |
1522 |
|
|
|
1523 |
|
|
#define SEND eio_submit (req); return req |
1524 |
|
|
|
1525 |
root |
1.9 |
#define PATH \ |
1526 |
|
|
req->flags |= EIO_FLAG_PTR1_FREE; \ |
1527 |
|
|
req->ptr1 = strdup (path); \ |
1528 |
|
|
if (!req->ptr1) \ |
1529 |
|
|
{ \ |
1530 |
|
|
eio_api_destroy (req); \ |
1531 |
|
|
return 0; \ |
1532 |
|
|
} |
1533 |
|
|
|
1534 |
root |
1.15 |
static void eio_execute (etp_worker *self, eio_req *req) |
1535 |
|
|
{ |
1536 |
|
|
errno = 0; |
1537 |
|
|
|
1538 |
|
|
switch (req->type) |
1539 |
|
|
{ |
1540 |
|
|
case EIO_READ: ALLOC (req->size); |
1541 |
|
|
req->result = req->offs >= 0 |
1542 |
|
|
? pread (req->int1, req->ptr2, req->size, req->offs) |
1543 |
|
|
: read (req->int1, req->ptr2, req->size); break; |
1544 |
|
|
case EIO_WRITE: req->result = req->offs >= 0 |
1545 |
|
|
? pwrite (req->int1, req->ptr2, req->size, req->offs) |
1546 |
|
|
: write (req->int1, req->ptr2, req->size); break; |
1547 |
|
|
|
1548 |
|
|
case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
1549 |
|
|
case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break; |
1550 |
|
|
|
1551 |
|
|
case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1552 |
|
|
req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1553 |
|
|
case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1554 |
|
|
req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1555 |
|
|
case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1556 |
|
|
req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1557 |
|
|
|
1558 |
|
|
case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
1559 |
|
|
case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
1560 |
|
|
case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
1561 |
|
|
case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
1562 |
|
|
case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
1563 |
|
|
case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; |
1564 |
|
|
|
1565 |
|
|
case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break; |
1566 |
|
|
case EIO_CLOSE: req->result = close (req->int1); break; |
1567 |
|
|
case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; |
1568 |
|
|
case EIO_UNLINK: req->result = unlink (req->ptr1); break; |
1569 |
|
|
case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1570 |
|
|
case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1571 |
|
|
case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1572 |
|
|
case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1573 |
|
|
case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1574 |
root |
1.18 |
case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; |
1575 |
root |
1.15 |
|
1576 |
|
|
case EIO_READLINK: ALLOC (NAME_MAX); |
1577 |
|
|
req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
1578 |
|
|
|
1579 |
|
|
case EIO_SYNC: req->result = 0; sync (); break; |
1580 |
|
|
case EIO_FSYNC: req->result = fsync (req->int1); break; |
1581 |
|
|
case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1582 |
root |
1.23 |
case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break; |
1583 |
|
|
case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; |
1584 |
root |
1.27 |
case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
1585 |
root |
1.15 |
|
1586 |
|
|
case EIO_READDIR: eio__scandir (req, self); break; |
1587 |
|
|
|
1588 |
|
|
case EIO_BUSY: |
1589 |
|
|
#ifdef _WIN32 |
1590 |
|
|
Sleep (req->nv1 * 1000.); |
1591 |
|
|
#else |
1592 |
|
|
{ |
1593 |
|
|
struct timeval tv; |
1594 |
|
|
|
1595 |
|
|
tv.tv_sec = req->nv1; |
1596 |
|
|
tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; |
1597 |
|
|
|
1598 |
|
|
req->result = select (0, 0, 0, 0, &tv); |
1599 |
|
|
} |
1600 |
|
|
#endif |
1601 |
|
|
break; |
1602 |
|
|
|
1603 |
|
|
case EIO_UTIME: |
1604 |
|
|
case EIO_FUTIME: |
1605 |
|
|
{ |
1606 |
|
|
struct timeval tv[2]; |
1607 |
|
|
struct timeval *times; |
1608 |
|
|
|
1609 |
|
|
if (req->nv1 != -1. || req->nv2 != -1.) |
1610 |
|
|
{ |
1611 |
|
|
tv[0].tv_sec = req->nv1; |
1612 |
|
|
tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.; |
1613 |
|
|
tv[1].tv_sec = req->nv2; |
1614 |
|
|
tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.; |
1615 |
|
|
|
1616 |
|
|
times = tv; |
1617 |
|
|
} |
1618 |
|
|
else |
1619 |
|
|
times = 0; |
1620 |
|
|
|
1621 |
|
|
|
1622 |
|
|
req->result = req->type == EIO_FUTIME |
1623 |
|
|
? futimes (req->int1, times) |
1624 |
|
|
: utimes (req->ptr1, times); |
1625 |
|
|
} |
1626 |
root |
1.25 |
break; |
1627 |
root |
1.15 |
|
1628 |
|
|
case EIO_GROUP: |
1629 |
root |
1.24 |
abort (); /* handled in eio_request */ |
1630 |
|
|
|
1631 |
root |
1.15 |
case EIO_NOP: |
1632 |
|
|
req->result = 0; |
1633 |
|
|
break; |
1634 |
|
|
|
1635 |
|
|
case EIO_CUSTOM: |
1636 |
root |
1.23 |
((void (*)(eio_req *))req->feed) (req); |
1637 |
root |
1.15 |
break; |
1638 |
|
|
|
1639 |
|
|
default: |
1640 |
|
|
req->result = -1; |
1641 |
|
|
break; |
1642 |
|
|
} |
1643 |
|
|
|
1644 |
|
|
req->errorno = errno; |
1645 |
|
|
} |
1646 |
|
|
|
1647 |
root |
1.12 |
#ifndef EIO_NO_WRAPPERS |
1648 |
|
|
|
1649 |
root |
1.10 |
eio_req *eio_nop (int pri, eio_cb cb, void *data) |
1650 |
root |
1.9 |
{ |
1651 |
|
|
REQ (EIO_NOP); SEND; |
1652 |
|
|
} |
1653 |
|
|
|
1654 |
root |
1.10 |
eio_req *eio_busy (double delay, int pri, eio_cb cb, void *data) |
1655 |
root |
1.9 |
{ |
1656 |
|
|
REQ (EIO_BUSY); req->nv1 = delay; SEND; |
1657 |
|
|
} |
1658 |
|
|
|
1659 |
root |
1.10 |
eio_req *eio_sync (int pri, eio_cb cb, void *data) |
1660 |
root |
1.9 |
{ |
1661 |
|
|
REQ (EIO_SYNC); SEND; |
1662 |
|
|
} |
1663 |
root |
1.6 |
|
1664 |
root |
1.10 |
eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data) |
1665 |
root |
1.6 |
{ |
1666 |
root |
1.9 |
REQ (EIO_FSYNC); req->int1 = fd; SEND; |
1667 |
root |
1.6 |
} |
1668 |
|
|
|
1669 |
root |
1.23 |
eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1670 |
|
|
{ |
1671 |
|
|
REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1672 |
|
|
} |
1673 |
|
|
|
1674 |
|
|
eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1675 |
|
|
{ |
1676 |
|
|
REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1677 |
|
|
} |
1678 |
|
|
|
1679 |
root |
1.27 |
eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
1680 |
|
|
{ |
1681 |
|
|
REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
1682 |
|
|
} |
1683 |
|
|
|
1684 |
root |
1.10 |
eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
1685 |
root |
1.6 |
{ |
1686 |
root |
1.9 |
REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
1687 |
|
|
} |
1688 |
|
|
|
1689 |
root |
1.10 |
eio_req *eio_close (int fd, int pri, eio_cb cb, void *data) |
1690 |
root |
1.9 |
{ |
1691 |
|
|
REQ (EIO_CLOSE); req->int1 = fd; SEND; |
1692 |
root |
1.6 |
} |
1693 |
|
|
|
1694 |
root |
1.10 |
eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data) |
1695 |
root |
1.6 |
{ |
1696 |
root |
1.9 |
REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND; |
1697 |
root |
1.6 |
} |
1698 |
|
|
|
1699 |
root |
1.10 |
eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
1700 |
root |
1.6 |
{ |
1701 |
root |
1.10 |
REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
1702 |
root |
1.6 |
} |
1703 |
|
|
|
1704 |
root |
1.10 |
eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
1705 |
root |
1.6 |
{ |
1706 |
root |
1.10 |
REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
1707 |
root |
1.6 |
} |
1708 |
|
|
|
1709 |
root |
1.10 |
eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
1710 |
root |
1.6 |
{ |
1711 |
root |
1.9 |
REQ (EIO_FSTAT); req->int1 = fd; SEND; |
1712 |
root |
1.6 |
} |
1713 |
|
|
|
1714 |
root |
1.10 |
eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
1715 |
root |
1.6 |
{ |
1716 |
root |
1.9 |
REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
1717 |
root |
1.6 |
} |
1718 |
|
|
|
1719 |
root |
1.10 |
eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data) |
1720 |
root |
1.6 |
{ |
1721 |
root |
1.9 |
REQ (EIO_FTRUNCATE); req->int1 = fd; req->offs = offset; SEND; |
1722 |
root |
1.6 |
} |
1723 |
|
|
|
1724 |
root |
1.10 |
eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) |
1725 |
root |
1.6 |
{ |
1726 |
root |
1.9 |
REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
1727 |
root |
1.6 |
} |
1728 |
|
|
|
1729 |
root |
1.10 |
eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
1730 |
root |
1.6 |
{ |
1731 |
root |
1.9 |
REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1732 |
root |
1.6 |
} |
1733 |
|
|
|
1734 |
root |
1.10 |
eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) |
1735 |
root |
1.6 |
{ |
1736 |
root |
1.9 |
REQ (EIO_DUP2); req->int1 = fd; req->int2 = fd2; SEND; |
1737 |
root |
1.6 |
} |
1738 |
|
|
|
1739 |
root |
1.10 |
eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data) |
1740 |
root |
1.6 |
{ |
1741 |
root |
1.9 |
REQ (EIO_SENDFILE); req->int1 = out_fd; req->int2 = in_fd; req->offs = in_offset; req->size = length; SEND; |
1742 |
root |
1.6 |
} |
1743 |
|
|
|
1744 |
root |
1.10 |
eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data) |
1745 |
root |
1.6 |
{ |
1746 |
root |
1.9 |
REQ (EIO_OPEN); PATH; req->int1 = flags; req->int2 = (long)mode; SEND; |
1747 |
root |
1.6 |
} |
1748 |
|
|
|
1749 |
root |
1.10 |
eio_req *eio_utime (const char *path, double atime, double mtime, int pri, eio_cb cb, void *data) |
1750 |
root |
1.6 |
{ |
1751 |
root |
1.9 |
REQ (EIO_UTIME); PATH; req->nv1 = atime; req->nv2 = mtime; SEND; |
1752 |
root |
1.6 |
} |
1753 |
|
|
|
1754 |
root |
1.10 |
eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) |
1755 |
root |
1.6 |
{ |
1756 |
root |
1.9 |
REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; |
1757 |
root |
1.6 |
} |
1758 |
|
|
|
1759 |
root |
1.10 |
eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
1760 |
root |
1.6 |
{ |
1761 |
root |
1.9 |
REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1762 |
root |
1.6 |
} |
1763 |
|
|
|
1764 |
root |
1.10 |
eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
1765 |
root |
1.6 |
{ |
1766 |
root |
1.9 |
REQ (EIO_CHMOD); PATH; req->int2 = (long)mode; SEND; |
1767 |
root |
1.6 |
} |
1768 |
|
|
|
1769 |
root |
1.10 |
eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
1770 |
root |
1.6 |
{ |
1771 |
root |
1.9 |
REQ (EIO_MKDIR); PATH; req->int2 = (long)mode; SEND; |
1772 |
root |
1.6 |
} |
1773 |
|
|
|
1774 |
root |
1.9 |
static eio_req * |
1775 |
root |
1.10 |
eio__1path (int type, const char *path, int pri, eio_cb cb, void *data) |
1776 |
root |
1.6 |
{ |
1777 |
root |
1.9 |
REQ (type); PATH; SEND; |
1778 |
root |
1.6 |
} |
1779 |
|
|
|
1780 |
root |
1.10 |
eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
1781 |
root |
1.6 |
{ |
1782 |
root |
1.10 |
return eio__1path (EIO_READLINK, path, pri, cb, data); |
1783 |
root |
1.6 |
} |
1784 |
|
|
|
1785 |
root |
1.10 |
eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
1786 |
root |
1.6 |
{ |
1787 |
root |
1.10 |
return eio__1path (EIO_STAT, path, pri, cb, data); |
1788 |
root |
1.6 |
} |
1789 |
|
|
|
1790 |
root |
1.10 |
eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
1791 |
root |
1.6 |
{ |
1792 |
root |
1.10 |
return eio__1path (EIO_LSTAT, path, pri, cb, data); |
1793 |
root |
1.6 |
} |
1794 |
|
|
|
1795 |
root |
1.10 |
eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
1796 |
root |
1.6 |
{ |
1797 |
root |
1.10 |
return eio__1path (EIO_UNLINK, path, pri, cb, data); |
1798 |
root |
1.6 |
} |
1799 |
|
|
|
1800 |
root |
1.10 |
eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) |
1801 |
root |
1.6 |
{ |
1802 |
root |
1.10 |
return eio__1path (EIO_RMDIR, path, pri, cb, data); |
1803 |
root |
1.6 |
} |
1804 |
|
|
|
1805 |
root |
1.31 |
eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data) |
1806 |
root |
1.1 |
{ |
1807 |
root |
1.31 |
REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
1808 |
root |
1.1 |
} |
1809 |
|
|
|
1810 |
root |
1.10 |
eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1811 |
root |
1.1 |
{ |
1812 |
root |
1.18 |
REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; |
1813 |
root |
1.1 |
} |
1814 |
|
|
|
1815 |
root |
1.9 |
static eio_req * |
1816 |
root |
1.10 |
eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1817 |
root |
1.1 |
{ |
1818 |
root |
1.9 |
REQ (type); PATH; |
1819 |
root |
1.1 |
|
1820 |
root |
1.9 |
req->flags |= EIO_FLAG_PTR2_FREE; |
1821 |
|
|
req->ptr2 = strdup (new_path); |
1822 |
|
|
if (!req->ptr2) |
1823 |
|
|
{ |
1824 |
|
|
eio_api_destroy (req); |
1825 |
|
|
return 0; |
1826 |
|
|
} |
1827 |
root |
1.1 |
|
1828 |
root |
1.9 |
SEND; |
1829 |
root |
1.1 |
} |
1830 |
|
|
|
1831 |
root |
1.10 |
eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1832 |
root |
1.1 |
{ |
1833 |
root |
1.10 |
return eio__2path (EIO_LINK, path, new_path, pri, cb, data); |
1834 |
root |
1.1 |
} |
1835 |
|
|
|
1836 |
root |
1.10 |
eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1837 |
root |
1.1 |
{ |
1838 |
root |
1.10 |
return eio__2path (EIO_SYMLINK, path, new_path, pri, cb, data); |
1839 |
root |
1.1 |
} |
1840 |
|
|
|
1841 |
root |
1.10 |
eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1842 |
root |
1.1 |
{ |
1843 |
root |
1.10 |
return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
1844 |
|
|
} |
1845 |
|
|
|
1846 |
root |
1.15 |
eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) |
1847 |
|
|
{ |
1848 |
root |
1.23 |
REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND; |
1849 |
root |
1.15 |
} |
1850 |
|
|
|
1851 |
root |
1.12 |
#endif |
1852 |
|
|
|
1853 |
root |
1.10 |
eio_req *eio_grp (eio_cb cb, void *data) |
1854 |
|
|
{ |
1855 |
|
|
const int pri = EIO_PRI_MAX; |
1856 |
|
|
|
1857 |
|
|
REQ (EIO_GROUP); SEND; |
1858 |
root |
1.1 |
} |
1859 |
|
|
|
1860 |
root |
1.9 |
#undef REQ |
1861 |
|
|
#undef PATH |
1862 |
|
|
#undef SEND |
1863 |
root |
1.1 |
|
1864 |
root |
1.9 |
/*****************************************************************************/ |
1865 |
|
|
/* grp functions */ |
1866 |
root |
1.1 |
|
1867 |
root |
1.2 |
void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
1868 |
root |
1.1 |
{ |
1869 |
|
|
grp->int2 = limit; |
1870 |
|
|
grp->feed = feed; |
1871 |
root |
1.2 |
|
1872 |
|
|
grp_try_feed (grp); |
1873 |
|
|
} |
1874 |
|
|
|
1875 |
|
|
void eio_grp_limit (eio_req *grp, int limit) |
1876 |
|
|
{ |
1877 |
|
|
grp->int2 = limit; |
1878 |
|
|
|
1879 |
|
|
grp_try_feed (grp); |
1880 |
root |
1.1 |
} |
1881 |
|
|
|
1882 |
|
|
void eio_grp_add (eio_req *grp, eio_req *req) |
1883 |
|
|
{ |
1884 |
|
|
assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
1885 |
|
|
|
1886 |
root |
1.26 |
grp->flags |= EIO_FLAG_GROUPADD; |
1887 |
|
|
|
1888 |
root |
1.1 |
++grp->size; |
1889 |
|
|
req->grp = grp; |
1890 |
|
|
|
1891 |
|
|
req->grp_prev = 0; |
1892 |
|
|
req->grp_next = grp->grp_first; |
1893 |
|
|
|
1894 |
|
|
if (grp->grp_first) |
1895 |
|
|
grp->grp_first->grp_prev = req; |
1896 |
|
|
|
1897 |
|
|
grp->grp_first = req; |
1898 |
|
|
} |
1899 |
|
|
|
1900 |
root |
1.9 |
/*****************************************************************************/ |
1901 |
|
|
/* misc garbage */ |
1902 |
|
|
|
1903 |
|
|
ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
1904 |
|
|
{ |
1905 |
root |
1.14 |
etp_worker wrk; |
1906 |
root |
1.37 |
ssize_t ret; |
1907 |
root |
1.9 |
|
1908 |
|
|
wrk.dbuf = 0; |
1909 |
|
|
|
1910 |
root |
1.37 |
ret = eio__sendfile (ofd, ifd, offset, count, &wrk); |
1911 |
root |
1.9 |
|
1912 |
|
|
if (wrk.dbuf) |
1913 |
|
|
free (wrk.dbuf); |
1914 |
root |
1.37 |
|
1915 |
|
|
return ret; |
1916 |
root |
1.9 |
} |
1917 |
root |
1.1 |
|