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9c8be6cab9
This cased a segfault in some Linux system and was GCC-specific. Commit modified by @antirez: 1) Stripped away the part to set the proc title via config for now. 2) Handle initialization of setproctitle only when the replacement is used. 3) Don't require GCC now that the attribute constructor is no longer used.
196 lines
6.1 KiB
C
196 lines
6.1 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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/* 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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#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__)
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#define HAVE_BACKTRACE 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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#include <linux/version.h>
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#include <features.h>
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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 __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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* endianess 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) && __GNUC__
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#define GNUC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
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#if GNUC_VERSION >= 40100
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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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