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[redis.git] / src / config.h

diff --git a/src/config.h b/src/config.h
index f38ce872ede1961f74828975abeb56337abb2b31..b5c8284a0729dabe56be6f3290923b60ad7650fe 100644 (file)
--- a/src/config.h
+++ b/src/config.h
@@ -1,3 +1,32 @@
+/*
+ * Copyright (c) 2009-2012, Salvatore Sanfilippo <antirez at gmail dot com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   * Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *   * Neither the name of Redis nor the names of its contributors may be used
+ *     to endorse or promote products derived from this software without
+ *     specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
 #ifndef __CONFIG_H
 #define __CONFIG_H
 
@@ -25,7 +54,7 @@
 #endif
 
 /* Test for backtrace() */
-#if defined(__APPLE__) || defined(__linux__)
+#if defined(__APPLE__) || defined(__linux__) || defined(__sun)
 #define HAVE_BACKTRACE 1
 #endif
 
@@ -38,6 +67,13 @@
 #define HAVE_KQUEUE 1
 #endif
 
+#ifdef __sun
+#include <sys/feature_tests.h>
+#ifdef _DTRACE_VERSION
+#define HAVE_EVPORT 1
+#endif
+#endif
+
 /* Define aof_fsync to fdatasync() in Linux and fsync() for all the rest */
 #ifdef __linux__
 #define aof_fsync fdatasync
@@ -45,6 +81,28 @@
 #define aof_fsync fsync
 #endif
 
+/* Define rdb_fsync_range to sync_file_range() on Linux, otherwise we use
+ * the plain fsync() call. */
+#ifdef __linux__
+#include <linux/version.h>
+#include <features.h>
+#if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
+#if (LINUX_VERSION_CODE >= 0x020611 && __GLIBC_PREREQ(2, 6))
+#define HAVE_SYNC_FILE_RANGE 1
+#endif
+#else
+#if (LINUX_VERSION_CODE >= 0x020611)
+#define HAVE_SYNC_FILE_RANGE 1
+#endif
+#endif
+#endif
+
+#ifdef HAVE_SYNC_FILE_RANGE
+#define rdb_fsync_range(fd,off,size) sync_file_range(fd,off,size,SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE)
+#else
+#define rdb_fsync_range(fd,off,size) fsync(fd)
+#endif
+
 /* Byte ordering detection */
 #include <sys/types.h> /* This will likely define BYTE_ORDER */
 
@@ -59,10 +117,11 @@
 #define        BIG_ENDIAN      4321    /* most-significant byte first (IBM, net) */
 #define        PDP_ENDIAN      3412    /* LSB first in word, MSW first in long (pdp)*/
 
-#if defined(vax) || defined(ns32000) || defined(sun386) || defined(__i386__) || \
-    defined(MIPSEL) || defined(_MIPSEL) || defined(BIT_ZERO_ON_RIGHT) || \
-    defined(__alpha__) || defined(__alpha)
-#define BYTE_ORDER     LITTLE_ENDIAN
+#if defined(__i386__) || defined(__x86_64__) || defined(__amd64__) || \
+   defined(vax) || defined(ns32000) || defined(sun386) || \
+   defined(MIPSEL) || defined(_MIPSEL) || defined(BIT_ZERO_ON_RIGHT) || \
+   defined(__alpha__) || defined(__alpha)
+#define BYTE_ORDER    LITTLE_ENDIAN
 #endif
 
 #if defined(sel) || defined(pyr) || defined(mc68000) || defined(sparc) || \
@@ -78,13 +137,27 @@
 #endif /* BSD */
 #endif /* BYTE_ORDER */
 
-#if defined(__BYTE_ORDER) && !defined(BYTE_ORDER)
+/* Sometimes after including an OS-specific header that defines the
+ * endianess we end with __BYTE_ORDER but not with BYTE_ORDER that is what
+ * the Redis code uses. In this case let's define everything without the
+ * underscores. */
+#ifndef BYTE_ORDER
+#ifdef __BYTE_ORDER
+#if defined(__LITTLE_ENDIAN) && defined(__BIG_ENDIAN)
+#ifndef LITTLE_ENDIAN
+#define LITTLE_ENDIAN __LITTLE_ENDIAN
+#endif
+#ifndef BIG_ENDIAN
+#define BIG_ENDIAN __BIG_ENDIAN
+#endif
 #if (__BYTE_ORDER == __LITTLE_ENDIAN)
 #define BYTE_ORDER LITTLE_ENDIAN
 #else
 #define BYTE_ORDER BIG_ENDIAN
 #endif
 #endif
+#endif
+#endif
 
 #if !defined(BYTE_ORDER) || \
     (BYTE_ORDER != BIG_ENDIAN && BYTE_ORDER != LITTLE_ENDIAN)
@@ -96,4 +169,11 @@
 #error "Undefined or invalid BYTE_ORDER"
 #endif
 
+#if (__i386 || __amd64) && __GNUC__
+#define GNUC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
+#if GNUC_VERSION >= 40100
+#define HAVE_ATOMIC
+#endif
+#endif
+
 #endif