Even inside #if 0 comments are comments.

[redis.git] / src / config.h

diff --git a/src/config.h b/src/config.h
index e2d84818714b2515af68b6c7fb178c5f66eeaba2..136fd40c4c8eda0f89e975814de4127652c48ae8 100644 (file)
--- a/src/config.h
+++ b/src/config.h
@@ -5,14 +5,7 @@
 #include <AvailabilityMacros.h>
 #endif
 
-/* test for malloc_size() */
-#ifdef __APPLE__
-#include <malloc/malloc.h>
-#define HAVE_MALLOC_SIZE 1
-#define redis_malloc_size(p) malloc_size(p)
-#endif
-
-/* define redis_fstat to fstat or fstat64() */
+/* Define redis_fstat to fstat or fstat64() */
 #if defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6)
 #define redis_fstat fstat64
 #define redis_stat stat64
@@ -21,22 +14,22 @@
 #define redis_stat stat
 #endif
 
-/* test for proc filesystem */
+/* Test for proc filesystem */
 #ifdef __linux__
 #define HAVE_PROCFS 1
 #endif
 
-/* test for task_info() */
+/* Test for task_info() */
 #if defined(__APPLE__)
 #define HAVE_TASKINFO 1
 #endif
 
-/* test for backtrace() */
-#if defined(__APPLE__) || defined(__linux__)
+/* Test for backtrace() */
+#if defined(__APPLE__) || defined(__linux__) || defined(__sun)
 #define HAVE_BACKTRACE 1
 #endif
 
-/* test for polling API */
+/* Test for polling API */
 #ifdef __linux__
 #define HAVE_EPOLL 1
 #endif
@@ -45,11 +38,71 @@
 #define HAVE_KQUEUE 1
 #endif
 
-/* define aof_fsync to fdatasync() in Linux and fsync() for all the rest */
+/* Define aof_fsync to fdatasync() in Linux and fsync() for all the rest */
 #ifdef __linux__
 #define aof_fsync fdatasync
 #else
 #define aof_fsync fsync
 #endif
 
+/* Byte ordering detection */
+#include <sys/types.h> /* This will likely define BYTE_ORDER */
+
+#ifndef BYTE_ORDER
+#if (BSD >= 199103)
+# include <machine/endian.h>
+#else
+#if defined(linux) || defined(__linux__)
+# include <endian.h>
+#else
+#define        LITTLE_ENDIAN   1234    /* least-significant byte first (vax, pc) */
+#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(__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) || \
+    defined(is68k) || defined(tahoe) || defined(ibm032) || defined(ibm370) || \
+    defined(MIPSEB) || defined(_MIPSEB) || defined(_IBMR2) || defined(DGUX) ||\
+    defined(apollo) || defined(__convex__) || defined(_CRAY) || \
+    defined(__hppa) || defined(__hp9000) || \
+    defined(__hp9000s300) || defined(__hp9000s700) || \
+    defined (BIT_ZERO_ON_LEFT) || defined(m68k) || defined(__sparc)
+#define BYTE_ORDER     BIG_ENDIAN
+#endif
+#endif /* linux */
+#endif /* BSD */
+#endif /* BYTE_ORDER */
+
+#if defined(__BYTE_ORDER) && !defined(BYTE_ORDER)
+#if (__BYTE_ORDER == __LITTLE_ENDIAN)
+#define BYTE_ORDER LITTLE_ENDIAN
+#else
+#define BYTE_ORDER BIG_ENDIAN
+#endif
+#endif
+
+#if !defined(BYTE_ORDER) || \
+    (BYTE_ORDER != BIG_ENDIAN && BYTE_ORDER != LITTLE_ENDIAN)
+       /* you must determine what the correct bit order is for
+        * your compiler - the next line is an intentional error
+        * which will force your compiles to bomb until you fix
+        * the above macros.
+        */
+#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