// Copyright 2014 Mobvoi Inc. All Rights Reserved.
// Author: qli@mobvoi.com (Qian Li)
// Created on: May 12, 2014
//
// This file contains common macros.

#ifndef MOBVOI_BASE_MACROS_H_
#define MOBVOI_BASE_MACROS_H_

// A macro to disallow the copy constructor and operator= functions.
// This should be used in the private: declarations for a class.
#define DISALLOW_COPY_AND_ASSIGN(type)    \
  type(const type&);                      \
  void operator=(const type&)

// A macro to disallow all the implicit constructors, namely the
// default constructor, copy constructor and operator= functions.
//
// This should be used in the private: declarations for a class
// that wants to prevent anyone from instantiating it. This is
// especially useful for classes containing only static methods.
#define DISALLOW_IMPLICIT_CONSTRUCTORS(type)    \
  type();                                       \
  DISALLOW_COPY_AND_ASSIGN(type)

/* Test for GCC > 2.95 */
#if defined(__GNUC__)     && (__GNUC__ > 2 || (__GNUC__ == 2 && (__GNUC_MINOR__ > 95)))
  #define LIKELY(x)   __builtin_expect(!!(x), 1)
  #define UNLIKELY(x) __builtin_expect(!!(x), 0)
#else /* !__GNUC__ or GCC < 2.95 */
  #define LIKELY(x)   (x)
  #define UNLIKELY(x) (x)
#endif /* __GNUC__ */

#define FORCE_INLINE __attribute__((always_inline)) inline

#endif  // MOBVOI_BASE_MACROS_H_