/* Copyright (c) 2012 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. */
#ifndef LIBRARIES_SDK_UTIL_MACROS_H_
#define LIBRARIES_SDK_UTIL_MACROS_H_
/**
* A macro to disallow the evil copy constructor and operator= functions
* This should be used in the private: declarations for a class.
*/
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
TypeName(const TypeName&); \
void operator=(const TypeName&)
/** returns the size of a member of a struct. */
#define MEMBER_SIZE(struct_name, member) sizeof(((struct_name*)0)->member)
/**
* Macros to prevent name mangling of definitions, allowing them to be
* referenced from C.
*/
#ifdef __cplusplus
# define EXTERN_C_BEGIN extern "C" {
# define EXTERN_C_END }
#else
# define EXTERN_C_BEGIN
# define EXTERN_C_END
#endif /* __cplusplus */
/**
* Macros to help force linkage of symbols that otherwise would not be
* included.
*
* // In a source file that you want to force linkage (file scope):
* FORCE_LINK_THIS(myfilename);
*
* // In a source file that you are sure will be linked (file scope):
* FORCE_LINK_THAT(myfilename)
*
*/
#define FORCE_LINK_THIS(x) int force_link_##x = 0;
#define FORCE_LINK_THAT(x) \
void force_link_function_##x() { \
extern int force_link_##x; \
force_link_##x = 1; \
}
#endif /* LIBRARIES_SDK_UTIL_MACROS_H_ */