macros.h File Reference

#include <stddef.h>
#include <unistd.h>
#include <utility>

Include dependency graph for macros.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros
#define	TEMP_FAILURE_RETRY(exp)
#define	DISALLOW_COPY_AND_ASSIGN(TypeName)
#define	DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName)
#define	arraysize(array)   (sizeof(ArraySizeHelper(array)))
#define	SIZEOF_MEMBER(t, f)   sizeof(std::declval<t>().f)
#define	LIKELY(exp)   (__builtin_expect( (exp) != 0, true ))
#define	UNLIKELY(exp)   (__builtin_expect( (exp) != 0, false ))
#define	WARN_UNUSED   __attribute__((warn_unused_result))
#define	ATTRIBUTE_UNUSED   __attribute__((__unused__))
#define	FALLTHROUGH_INTENDED   [[clang::fallthrough]]

Functions
template<typename T , size_t N>
char(&	ArraySizeHelper (T(&array)[N]))[N]
template<typename... T>
void	UNUSED (const T &...)

Macro Definition Documentation

arraysize

#define arraysize

(

array

)

(sizeof(ArraySizeHelper(array)))

ATTRIBUTE_UNUSED

#define ATTRIBUTE_UNUSED   __attribute__((__unused__))

DISALLOW_COPY_AND_ASSIGN

#define DISALLOW_COPY_AND_ASSIGN

(

TypeName

)

Value:

  TypeName(const TypeName&) = delete;      \
  void operator=(const TypeName&) = delete

DISALLOW_IMPLICIT_CONSTRUCTORS

#define DISALLOW_IMPLICIT_CONSTRUCTORS

(

TypeName

)

Value:

  TypeName() = delete;                           \
  DISALLOW_COPY_AND_ASSIGN(TypeName)

FALLTHROUGH_INTENDED

#define FALLTHROUGH_INTENDED   [[clang::fallthrough]]

LIKELY

#define LIKELY

(

exp

)

(__builtin_expect( (exp) != 0, true ))

SIZEOF_MEMBER

#define SIZEOF_MEMBER	(		t,
			f
	)		sizeof(std::declval<t>().f)

TEMP_FAILURE_RETRY

#define TEMP_FAILURE_RETRY

(

exp

)

Value:

  ({                                       \
    decltype(exp) _rc;                     \
    do {                                   \
      _rc = (exp);                         \
    } while (_rc == -1 && errno == EINTR); \
    _rc;                                   \
  })

UNLIKELY

#define UNLIKELY

(

exp

)

(__builtin_expect( (exp) != 0, false ))

WARN_UNUSED

#define WARN_UNUSED   __attribute__((warn_unused_result))

Function Documentation

ArraySizeHelper()

template<typename T , size_t N>

char(& ArraySizeHelper

(

T(&)

array[N]

)

)[N]

UNUSED()

template<typename... T>

void UNUSED

(

const T &

...

)