Atomic Operations

This group contains the atomic operations implementation. More...

Files
file	cpukit/include/rtems/score/atomic.h
	This header file provides the interfaces of the Atomic Operations.
file	cpukit/score/src/libatomic.c
	This source file contains the implementation of _Libatomic_Protect_start() and _Libatomic_Protect_end().

Macros
#define	ATOMIC_ORDER_RELAXED   0
#define	ATOMIC_ORDER_ACQUIRE   2
#define	ATOMIC_ORDER_RELEASE   3
#define	ATOMIC_ORDER_ACQ_REL   4
#define	ATOMIC_ORDER_SEQ_CST   5
#define	ATOMIC_INITIALIZER_UINT(value)
#define	ATOMIC_INITIALIZER_ULONG(value)
#define	ATOMIC_INITIALIZER_UINTPTR(value)
#define	ATOMIC_INITIALIZER_FLAG   false

Typedefs
typedef unsigned int	Atomic_Uint
typedef unsigned long	Atomic_Ulong
typedef uintptr_t	Atomic_Uintptr
typedef bool	Atomic_Flag
typedef int	Atomic_Order

Detailed Description

This group contains the atomic operations implementation.

Atomic operations can be used to implement low-level synchronization primitives on SMP systems, like spin locks. All atomic operations are defined in terms of C11 (ISO/IEC 9899:2011) or C++11 (ISO/IEC 14882:2011). For documentation use the standard documents.

Macro Definition Documentation

ATOMIC_INITIALIZER_UINT

#define ATOMIC_INITIALIZER_UINT

(

value

)

Value:

( value )

ATOMIC_INITIALIZER_UINTPTR

#define ATOMIC_INITIALIZER_UINTPTR

(

value

)

Value:

( value )

ATOMIC_INITIALIZER_ULONG

#define ATOMIC_INITIALIZER_ULONG

(

value

)

Value:

( value )