Index: base/sys_byteorder.h |
diff --git a/base/sys_byteorder.h b/base/sys_byteorder.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..4139b26c984aa1192bf7c2518c6d8ce2ffbfca44 |
--- /dev/null |
+++ b/base/sys_byteorder.h |
@@ -0,0 +1,52 @@ |
+// Copyright (c) 2011 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+// This is a convenience header to pull in the platform-specific |
+// headers that define functions for byte-order conversion, |
+// particularly: ntohs(), htons(), ntohl(), htonl(). Prefer including |
+// this file instead of directly writing the #if / #else, since it |
+// avoids duplicating the platform-specific selections. |
+// This header also provides ntoh_64() and hton_64() for byte-order conversion |
+// for 64-bit integers. |
+ |
+#ifndef NET_BASE_SYS_BYTEORDER_H_ |
+#define NET_BASE_SYS_BYTEORDER_H_ |
Ryan Sleevi
2011/12/21 02:18:38
nit: NET_BASE_SYS_BYTEORDER_H_ -> BASE_SYS_BYTEORD
Ilya Sherman
2011/12/21 02:22:13
Done.
|
+ |
+#include "build/build_config.h" |
+ |
+#if defined(OS_WIN) |
+#include <winsock2.h> |
+#else |
+#include <arpa/inet.h> |
+#endif |
+ |
+// Include headers to provide bswap for all platforms. |
+#if defined(COMPILER_MSVC) |
+#include <stdlib.h> |
+#define bswap_16(x) _byteswap_ushort(x) |
+#define bswap_32(x) _byteswap_ulong(x) |
+#define bswap_64(x) _byteswap_uint64(x) |
+#elif defined(OS_MACOSX) |
+#include <libkern/OSByteOrder.h> |
+#define bswap_16(x) OSSwapInt16(x) |
+#define bswap_32(x) OSSwapInt32(x) |
+#define bswap_64(x) OSSwapInt64(x) |
+#elif defined(OS_OPENBSD) |
+#include <sys/endian.h> |
+#define bswap_16(x) swap16(x) |
+#define bswap_32(x) swap32(x) |
+#define bswap_64(x) swap64(x) |
+#else |
+#include <byteswap.h> |
+#endif |
+ |
+#if defined(ARCH_CPU_LITTLE_ENDIAN) |
+#define ntoh_64(x) bswap_64(x) |
+#define hton_64(x) bswap_64(x) |
+#else |
+#define ntoh_64(x) (x) |
+#define hton_64(x) (x) |
+#endif |
+ |
+#endif // NET_BASE_SYS_BYTEORDER_H_ |