atomic_macros_base.h

// Copyright (c) Electronic Arts Inc. All rights reserved.
 
 
#ifndef EASTL_ATOMIC_INTERNAL_MACROS_BASE_H
#define EASTL_ATOMIC_INTERNAL_MACROS_BASE_H
 
#if defined(EA_PRAGMA_ONCE_SUPPORTED)
    #pragma once
#endif
 
 
#define EASTL_ATOMIC_INTERNAL_COMPILER_AVAILABLE(op)                    \
    EA_PREPROCESSOR_JOIN(EA_PREPROCESSOR_JOIN(EASTL_COMPILER_, op), _AVAILABLE)
 
#define EASTL_ATOMIC_INTERNAL_ARCH_AVAILABLE(op)                        \
    EA_PREPROCESSOR_JOIN(EA_PREPROCESSOR_JOIN(EASTL_ARCH_, op), _AVAILABLE)
 
#define EASTL_ATOMIC_INTERNAL_NOT_IMPLEMENTED_ERROR(...)                \
    static_assert(false, "eastl::atomic<T> atomic macro not implemented!")
 
 
/* Compiler && Arch Not Implemented */
#define EASTL_ATOMIC_INTERNAL_OP_PATTERN_00(op) \
    EASTL_ATOMIC_INTERNAL_NOT_IMPLEMENTED_ERROR
 
/* Arch Implemented */
#define EASTL_ATOMIC_INTERNAL_OP_PATTERN_01(op) \
    EA_PREPROCESSOR_JOIN(EASTL_ARCH_, op)
 
/* Compiler Implmented */
#define EASTL_ATOMIC_INTERNAL_OP_PATTERN_10(op) \
    EA_PREPROCESSOR_JOIN(EASTL_COMPILER_, op)
 
/* Compiler && Arch Implemented */
#define EASTL_ATOMIC_INTERNAL_OP_PATTERN_11(op) \
    EA_PREPROCESSOR_JOIN(EASTL_ARCH_, op)
 
 
/* This macro creates the pattern macros above for the 2x2 True-False truth table */
#define EASTL_ATOMIC_INTERNAL_OP_HELPER1(compiler, arch, op)            \
    EA_PREPROCESSOR_JOIN(EASTL_ATOMIC_INTERNAL_OP_PATTERN_, EA_PREPROCESSOR_JOIN(compiler, arch))(op)
 
 
//
// EASTL_ATOMIC_CHOOSE_OP_IMPL
//
// This macro chooses between the compiler or architecture implementation for a
// given atomic operation.
//
// USAGE:
//
// EASTL_ATOMIC_CHOOSE_OP_IMPL(ATOMIC_FETCH_ADD_RELAXED_8)(ret, ptr, val)
//
#define EASTL_ATOMIC_CHOOSE_OP_IMPL(op)                 \
    EASTL_ATOMIC_INTERNAL_OP_HELPER1(                   \
        EASTL_ATOMIC_INTERNAL_COMPILER_AVAILABLE(op),   \
        EASTL_ATOMIC_INTERNAL_ARCH_AVAILABLE(op),       \
        op                                              \
        )
 
 
#endif /* EASTL_ATOMIC_INTERNAL_MACROS_BASE_H */