assume.h File Reference

Defines ASSUME / #RB_LIKELY / UNREACHABLE. More...

#include "ruby/internal/config.h"
#include "ruby/internal/assume.h"
#include "ruby/internal/has/builtin.h"

Go to the source code of this file.

Macros
#define	ASSUME   RBIMPL_ASSUME
	Old name of RBIMPL_ASSUME.
#define	UNREACHABLE   RBIMPL_UNREACHABLE()
	Old name of RBIMPL_UNREACHABLE.
#define	UNREACHABLE_RETURN   RBIMPL_UNREACHABLE_RETURN
	Old name of RBIMPL_UNREACHABLE_RETURN.
#define	RB_LIKELY(x)
#define	RB_UNLIKELY(x)

Detailed Description

Defines ASSUME / #RB_LIKELY / UNREACHABLE.

Author

Ruby developers ruby-.nosp@m.core.nosp@m.@ruby.nosp@m.-lan.nosp@m.g.org

Copyright

This file is a part of the programming language Ruby. Permission is hereby granted, to either redistribute and/or modify this file, provided that the conditions mentioned in the file COPYING are met. Consult the file for details.

Warning

Symbols prefixed with either RBIMPL or rbimpl are implementation details. Don't take them as canon. They could rapidly appear then vanish. The name (path) of this header file is also an implementation detail. Do not expect it to persist at the place it is now. Developers are free to move it anywhere anytime at will.

Note

To ruby-core: remember that this header can be possibly recursively included from extension libraries written in C++. Do not expect for instance __VA_ARGS__ is always available. We assume C99 for ruby itself but we don't assume languages of extension libraries. They could be written in C++98.

Definition in file assume.h.

Macro Definition Documentation

RB_LIKELY

#define RB_LIKELY

(

x

)

Value:

(x)

Definition at line 52 of file assume.h.

RB_UNLIKELY

#define RB_UNLIKELY

(

x

)

Value:

(x)

Definition at line 53 of file assume.h.