/usr/include/ola/base/Macro.h is in libola-dev 0.10.5.nojsmin-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Macro.h
*/
/**
* @file Macro.h
* @brief Helper macros.
*/
#ifndef INCLUDE_OLA_BASE_MACRO_H_
#define INCLUDE_OLA_BASE_MACRO_H_
/**
* @def DISALLOW_COPY_AND_ASSIGN(Foo)
* @brief Creates dummy copy constructor and assignment operator declarations.
*
* Use this in the private: section of a class to prevent copying / assignment.
*
* @examplepara
* @code
* class Foo {
* public:
* Foo() { ... }
*
* private:
* DISALLOW_COPY_AND_ASSIGN(Foo);
* };
* @endcode
*/
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
TypeName(const TypeName&); \
void operator=(const TypeName&)
/**
* @def OLA_UNUSED
* @brief Mark unused arguments & types.
*
* @examplepara
* @code
* void Foo(OLA_UNUSED int bar) {}
*
* OLA_UNUSED typedef int Baz;
* @endcode
*/
#ifdef __GNUC__
#define OLA_UNUSED __attribute__ ((unused))
#else
#define OLA_UNUSED
#endif // __GNUC__
/**
* @def OLA_FALLTHROUGH
* @brief Mark switch cases as fallthrough when required
* @note We are not currently using [[fallthrough]]; because we need C++98
* compatibility
*
* @examplepara
* @code
* switch (cond) {
* case 'foo':
* doFoo();
* // after foo fallthrough to bar because $REASON
* OLA_FALLTHROUGH
* case 'bar':
* @endcode
*/
#ifdef __GNUC__
#if __GNUC__ >= 7
#define OLA_FALLTHROUGH __attribute__ ((fallthrough));
#else
#define OLA_FALLTHROUGH
#endif // __GNUC__ >= 7
#else
#define OLA_FALLTHROUGH
#endif // __GNUC__
/**
* @def STATIC_ASSERT
* @brief Compile time assert().
*
* @examplepara
* @code
* PACK(
* struct foo_s {
* uint16_t bar;
* });
* STATIC_ASSERT(sizeof(foo_s) == 2);
* @endcode
*/
/*
* This code was adapted from:
* http://blogs.msdn.com/b/abhinaba/archive/
* 2008/10/27/c-c-compile-time-asserts.aspx
*/
#ifdef __cplusplus
#define JOIN(X, Y) JOIN2(X, Y)
#define JOIN2(X, Y) X##Y
namespace internal {
template <bool> struct STATIC_ASSERT_FAILURE;
template <> struct STATIC_ASSERT_FAILURE<true> { enum { value = 1 }; };
template<int x> struct static_assert_test{};
}
#define STATIC_ASSERT(x) \
OLA_UNUSED typedef ::internal::static_assert_test<\
sizeof(::internal::STATIC_ASSERT_FAILURE< static_cast<bool>( x ) >)>\
JOIN(_static_assert_typedef, __LINE__)
#else // __cplusplus
#define STATIC_ASSERT(x) extern int __dummy[static_cast<int>x]
#endif // __cplusplus
/*
* End of adapted code.
*/
/**
* @def PACK
* @brief Pack structures.
*
* In order to account for platform differences with regard to packing, we
* need to use the following macro while declaring types that need to have a
* specific binary layout.
* Taken from:
* http://stackoverflow.com/questions/1537964/
* visual-c-equivalent-of-gccs-attribute-packed
*
* @examplepara
* @code
* PACK(
* struct foo_s {
* uint16_t bar;
* });
* @endcode
*/
#ifdef _WIN32
#ifdef _MSC_VER
#define PACK(__Declaration__) \
__pragma(pack(push, 1)) \
__Declaration__; \
__pragma(pack(pop))
#else
#define PACK(__Declaration__) \
_Pragma("pack(push, 1)") \
__Declaration__; \
_Pragma("pack(pop)")
#endif // _MSC_VER
#else
#define PACK(__Declaration__) __Declaration__ __attribute__((__packed__))
#endif // _WIN32
#endif // INCLUDE_OLA_BASE_MACRO_H_
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