210 lines
6.4 KiB
C
210 lines
6.4 KiB
C
/*
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* Copyright (c) 2009-2012, Salvatore Sanfilippo <antirez at gmail dot com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * 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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* * 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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* * Neither the name of Redis nor the names of its contributors may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __CONFIG_H
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#define __CONFIG_H
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#ifdef __APPLE__
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#include <AvailabilityMacros.h>
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#endif
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#ifdef __linux__
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#include <linux/version.h>
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#include <features.h>
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#endif
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/* Define redis_fstat to fstat or fstat64() */
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#if defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6)
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#define redis_fstat fstat64
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#define redis_stat stat64
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#else
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#define redis_fstat fstat
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#define redis_stat stat
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#endif
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/* Test for proc filesystem */
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#ifdef __linux__
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#define HAVE_PROC_STAT 1
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#define HAVE_PROC_MAPS 1
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#define HAVE_PROC_SMAPS 1
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#define HAVE_PROC_SOMAXCONN 1
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#endif
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/* Test for task_info() */
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#if defined(__APPLE__)
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#define HAVE_TASKINFO 1
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#endif
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/* Test for backtrace() */
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#if defined(__APPLE__) || (defined(__linux__) && defined(__GLIBC__))
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#define HAVE_BACKTRACE 1
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#endif
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/* MSG_NOSIGNAL. */
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#ifdef __linux__
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#define HAVE_MSG_NOSIGNAL 1
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#endif
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/* Test for polling API */
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#ifdef __linux__
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#define HAVE_EPOLL 1
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#endif
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#if (defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_6)) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined (__NetBSD__)
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#define HAVE_KQUEUE 1
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#endif
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#ifdef __sun
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#include <sys/feature_tests.h>
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#ifdef _DTRACE_VERSION
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#define HAVE_EVPORT 1
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#endif
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#endif
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/* Define aof_fsync to fdatasync() in Linux and fsync() for all the rest */
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#ifdef __linux__
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#define aof_fsync fdatasync
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#else
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#define aof_fsync fsync
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#endif
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/* Define rdb_fsync_range to sync_file_range() on Linux, otherwise we use
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* the plain fsync() call. */
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#ifdef __linux__
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#if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
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#if (LINUX_VERSION_CODE >= 0x020611 && __GLIBC_PREREQ(2, 6))
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#define HAVE_SYNC_FILE_RANGE 1
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#endif
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#else
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#if (LINUX_VERSION_CODE >= 0x020611)
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#define HAVE_SYNC_FILE_RANGE 1
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#endif
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#endif
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#endif
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#ifdef HAVE_SYNC_FILE_RANGE
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#define rdb_fsync_range(fd,off,size) sync_file_range(fd,off,size,SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE)
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#else
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#define rdb_fsync_range(fd,off,size) fsync(fd)
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#endif
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/* Check if we can use setproctitle().
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* BSD systems have support for it, we provide an implementation for
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* Linux and osx. */
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#if (defined __NetBSD__ || defined __FreeBSD__ || defined __OpenBSD__)
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#define USE_SETPROCTITLE
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#endif
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#if ((defined __linux && defined(__GLIBC__)) || defined __APPLE__)
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#define USE_SETPROCTITLE
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#define INIT_SETPROCTITLE_REPLACEMENT
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void spt_init(int argc, char *argv[]);
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void setproctitle(const char *fmt, ...);
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#endif
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/* Byte ordering detection */
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#include <sys/types.h> /* This will likely define BYTE_ORDER */
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#ifndef BYTE_ORDER
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#if (BSD >= 199103)
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# include <machine/endian.h>
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#else
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#if defined(linux) || defined(__linux__)
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# include <endian.h>
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#else
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#define LITTLE_ENDIAN 1234 /* least-significant byte first (vax, pc) */
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#define BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */
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#define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp)*/
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#if defined(__i386__) || defined(__x86_64__) || defined(__amd64__) || \
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defined(vax) || defined(ns32000) || defined(sun386) || \
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defined(MIPSEL) || defined(_MIPSEL) || defined(BIT_ZERO_ON_RIGHT) || \
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defined(__alpha__) || defined(__alpha)
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#define BYTE_ORDER LITTLE_ENDIAN
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#endif
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#if defined(sel) || defined(pyr) || defined(mc68000) || defined(sparc) || \
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defined(is68k) || defined(tahoe) || defined(ibm032) || defined(ibm370) || \
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defined(MIPSEB) || defined(_MIPSEB) || defined(_IBMR2) || defined(DGUX) ||\
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defined(apollo) || defined(__convex__) || defined(_CRAY) || \
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defined(__hppa) || defined(__hp9000) || \
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defined(__hp9000s300) || defined(__hp9000s700) || \
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defined (BIT_ZERO_ON_LEFT) || defined(m68k) || defined(__sparc)
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#define BYTE_ORDER BIG_ENDIAN
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#endif
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#endif /* linux */
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#endif /* BSD */
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#endif /* BYTE_ORDER */
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/* Sometimes after including an OS-specific header that defines the
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* endianness we end with __BYTE_ORDER but not with BYTE_ORDER that is what
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* the Redis code uses. In this case let's define everything without the
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* underscores. */
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#ifndef BYTE_ORDER
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#ifdef __BYTE_ORDER
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#if defined(__LITTLE_ENDIAN) && defined(__BIG_ENDIAN)
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#ifndef LITTLE_ENDIAN
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#define LITTLE_ENDIAN __LITTLE_ENDIAN
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#endif
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#ifndef BIG_ENDIAN
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#define BIG_ENDIAN __BIG_ENDIAN
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#endif
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#if (__BYTE_ORDER == __LITTLE_ENDIAN)
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#define BYTE_ORDER LITTLE_ENDIAN
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#else
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#define BYTE_ORDER BIG_ENDIAN
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#endif
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#endif
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#endif
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#endif
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#if !defined(BYTE_ORDER) || \
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(BYTE_ORDER != BIG_ENDIAN && BYTE_ORDER != LITTLE_ENDIAN)
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/* you must determine what the correct bit order is for
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* your compiler - the next line is an intentional error
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* which will force your compiles to bomb until you fix
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* the above macros.
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*/
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#error "Undefined or invalid BYTE_ORDER"
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#endif
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#if (__i386 || __amd64 || __powerpc__) && __GNUC__
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#define GNUC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
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#if defined(__clang__)
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#define HAVE_ATOMIC
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#endif
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#if (defined(__GLIBC__) && defined(__GLIBC_PREREQ))
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#if (GNUC_VERSION >= 40100 && __GLIBC_PREREQ(2, 6))
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#define HAVE_ATOMIC
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#endif
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#endif
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#endif
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#endif
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