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/////////////////////////////////////////////////////////////////////////////////
// Copyright (c) Electronic Arts Inc. All rights reserved.
/////////////////////////////////////////////////////////////////////////////////
#ifndef EASTL_ATOMIC_INTERNAL_POINTER_H
#define EASTL_ATOMIC_INTERNAL_POINTER_H
#if defined(EA_PRAGMA_ONCE_SUPPORTED)
#pragma once
#endif
#include "atomic_push_compiler_options.h"
namespace eastl
{
namespace internal
{
template <typename T, unsigned width = sizeof(T)>
struct atomic_pointer_base;
#define EASTL_ATOMIC_POINTER_STATIC_ASSERT_FUNCS_IMPL(funcName) \
template <typename Order> \
T* funcName(ptrdiff_t arg, Order order) EA_NOEXCEPT \
{ \
EASTL_ATOMIC_STATIC_ASSERT_INVALID_MEMORY_ORDER(T); \
} \
\
template <typename Order> \
T* funcName(ptrdiff_t arg, Order order) volatile EA_NOEXCEPT \
{ \
EASTL_ATOMIC_STATIC_ASSERT_VOLATILE_MEM_FN(T); \
} \
\
T* funcName(ptrdiff_t arg) volatile EA_NOEXCEPT \
{ \
EASTL_ATOMIC_STATIC_ASSERT_VOLATILE_MEM_FN(T); \
}
#define EASTL_ATOMIC_POINTER_STATIC_ASSERT_INC_DEC_OPERATOR_IMPL(operatorOp) \
T* operator operatorOp() volatile EA_NOEXCEPT \
{ \
EASTL_ATOMIC_STATIC_ASSERT_VOLATILE_MEM_FN(T); \
} \
\
T* operator operatorOp(int) volatile EA_NOEXCEPT \
{ \
EASTL_ATOMIC_STATIC_ASSERT_VOLATILE_MEM_FN(T); \
}
#define EASTL_ATOMIC_POINTER_STATIC_ASSERT_ASSIGNMENT_OPERATOR_IMPL(operatorOp) \
T* operator operatorOp(ptrdiff_t arg) volatile EA_NOEXCEPT \
{ \
EASTL_ATOMIC_STATIC_ASSERT_VOLATILE_MEM_FN(T); \
}
template <typename T, unsigned width>
struct atomic_pointer_base<T*, width> : public atomic_base_width<T*, width>
{
private:
using Base = atomic_base_width<T*, width>;
public: /* ctors */
EA_CONSTEXPR atomic_pointer_base(T* desired) EA_NOEXCEPT
: Base{ desired }
{
}
EA_CONSTEXPR atomic_pointer_base() EA_NOEXCEPT = default;
atomic_pointer_base(const atomic_pointer_base&) EA_NOEXCEPT = delete;
public: /* assignment operators */
using Base::operator=;
atomic_pointer_base& operator=(const atomic_pointer_base&) EA_NOEXCEPT = delete;
atomic_pointer_base& operator=(const atomic_pointer_base&) volatile EA_NOEXCEPT = delete;
public: /* fetch_add */
EASTL_ATOMIC_POINTER_STATIC_ASSERT_FUNCS_IMPL(fetch_add)
public: /* add_fetch */
EASTL_ATOMIC_POINTER_STATIC_ASSERT_FUNCS_IMPL(add_fetch)
public: /* fetch_sub */
EASTL_ATOMIC_POINTER_STATIC_ASSERT_FUNCS_IMPL(fetch_sub)
public: /* sub_fetch */
EASTL_ATOMIC_POINTER_STATIC_ASSERT_FUNCS_IMPL(sub_fetch)
public: /* operator++ && operator-- */
EASTL_ATOMIC_POINTER_STATIC_ASSERT_INC_DEC_OPERATOR_IMPL(++)
EASTL_ATOMIC_POINTER_STATIC_ASSERT_INC_DEC_OPERATOR_IMPL(--)
public: /* operator+= && operator-= */
EASTL_ATOMIC_POINTER_STATIC_ASSERT_ASSIGNMENT_OPERATOR_IMPL(+=)
EASTL_ATOMIC_POINTER_STATIC_ASSERT_ASSIGNMENT_OPERATOR_IMPL(-=)
};
template <typename T, unsigned width = sizeof(T)>
struct atomic_pointer_width;
#define EASTL_ATOMIC_POINTER_FUNC_IMPL(op, bits) \
T* retVal; \
{ \
ptr_integral_type retType; \
ptr_integral_type addend = static_cast<ptr_integral_type>(arg) * static_cast<ptr_integral_type>(sizeof(T)); \
\
EA_PREPROCESSOR_JOIN(op, bits)(ptr_integral_type, retType, EASTL_ATOMIC_INTEGRAL_CAST(ptr_integral_type, this->GetAtomicAddress()), addend); \
\
retVal = reinterpret_cast<T*>(retType); \
} \
return retVal;
#define EASTL_ATOMIC_POINTER_FETCH_IMPL(funcName, op, bits) \
T* funcName(ptrdiff_t arg) EA_NOEXCEPT \
{ \
EASTL_ATOMIC_STATIC_ASSERT_TYPE_IS_OBJECT(T); \
EASTL_ATOMIC_POINTER_FUNC_IMPL(op, bits); \
}
#define EASTL_ATOMIC_POINTER_FETCH_ORDER_IMPL(funcName, orderType, op, bits) \
T* funcName(ptrdiff_t arg, orderType) EA_NOEXCEPT \
{ \
EASTL_ATOMIC_STATIC_ASSERT_TYPE_IS_OBJECT(T); \
EASTL_ATOMIC_POINTER_FUNC_IMPL(op, bits); \
}
#define EASTL_ATOMIC_POINTER_FETCH_OP_JOIN(fetchOp, Order) \
EA_PREPROCESSOR_JOIN(EA_PREPROCESSOR_JOIN(EASTL_ATOMIC_, fetchOp), Order)
#define EASTL_ATOMIC_POINTER_FETCH_FUNCS_IMPL(funcName, fetchOp, bits) \
using Base::funcName; \
\
EASTL_ATOMIC_POINTER_FETCH_IMPL(funcName, EASTL_ATOMIC_POINTER_FETCH_OP_JOIN(fetchOp, _SEQ_CST_), bits) \
\
EASTL_ATOMIC_POINTER_FETCH_ORDER_IMPL(funcName, eastl::internal::memory_order_relaxed_s, \
EASTL_ATOMIC_POINTER_FETCH_OP_JOIN(fetchOp, _RELAXED_), bits) \
\
EASTL_ATOMIC_POINTER_FETCH_ORDER_IMPL(funcName, eastl::internal::memory_order_acquire_s, \
EASTL_ATOMIC_POINTER_FETCH_OP_JOIN(fetchOp, _ACQUIRE_), bits) \
\
EASTL_ATOMIC_POINTER_FETCH_ORDER_IMPL(funcName, eastl::internal::memory_order_release_s, \
EASTL_ATOMIC_POINTER_FETCH_OP_JOIN(fetchOp, _RELEASE_), bits) \
\
EASTL_ATOMIC_POINTER_FETCH_ORDER_IMPL(funcName, eastl::internal::memory_order_acq_rel_s, \
EASTL_ATOMIC_POINTER_FETCH_OP_JOIN(fetchOp, _ACQ_REL_), bits) \
\
EASTL_ATOMIC_POINTER_FETCH_ORDER_IMPL(funcName, eastl::internal::memory_order_seq_cst_s, \
EASTL_ATOMIC_POINTER_FETCH_OP_JOIN(fetchOp, _SEQ_CST_), bits)
#define EASTL_ATOMIC_POINTER_FETCH_INC_DEC_OPERATOR_IMPL(operatorOp, preFuncName, postFuncName) \
using Base::operator operatorOp; \
\
T* operator operatorOp() EA_NOEXCEPT \
{ \
return preFuncName(1, eastl::memory_order_seq_cst); \
} \
\
T* operator operatorOp(int) EA_NOEXCEPT \
{ \
return postFuncName(1, eastl::memory_order_seq_cst); \
}
#define EASTL_ATOMIC_POINTER_FETCH_ASSIGNMENT_OPERATOR_IMPL(operatorOp, funcName) \
using Base::operator operatorOp; \
\
T* operator operatorOp(ptrdiff_t arg) EA_NOEXCEPT \
{ \
return funcName(arg, eastl::memory_order_seq_cst); \
}
#define EASTL_ATOMIC_POINTER_WIDTH_SPECIALIZE(bytes, bits) \
template <typename T> \
struct atomic_pointer_width<T*, bytes> : public atomic_pointer_base<T*, bytes> \
{ \
private: \
\
using Base = atomic_pointer_base<T*, bytes>; \
using u_ptr_integral_type = EA_PREPROCESSOR_JOIN(EA_PREPROCESSOR_JOIN(uint, bits), _t); \
using ptr_integral_type = EA_PREPROCESSOR_JOIN(EA_PREPROCESSOR_JOIN(int, bits), _t); \
\
public: /* ctors */ \
\
EA_CONSTEXPR atomic_pointer_width(T* desired) EA_NOEXCEPT \
: Base{ desired } \
{ \
} \
\
EA_CONSTEXPR atomic_pointer_width() EA_NOEXCEPT = default; \
\
atomic_pointer_width(const atomic_pointer_width&) EA_NOEXCEPT = delete; \
\
public: /* assignment operators */ \
\
using Base::operator=; \
\
atomic_pointer_width& operator=(const atomic_pointer_width&) EA_NOEXCEPT = delete; \
atomic_pointer_width& operator=(const atomic_pointer_width&) volatile EA_NOEXCEPT = delete; \
\
public: /* fetch_add */ \
\
EASTL_ATOMIC_POINTER_FETCH_FUNCS_IMPL(fetch_add, FETCH_ADD, bits) \
\
public: /* add_fetch */ \
\
EASTL_ATOMIC_POINTER_FETCH_FUNCS_IMPL(add_fetch, ADD_FETCH, bits) \
\
public: /* fetch_sub */ \
\
EASTL_ATOMIC_POINTER_FETCH_FUNCS_IMPL(fetch_sub, FETCH_SUB, bits) \
\
public: /* sub_fetch */ \
\
EASTL_ATOMIC_POINTER_FETCH_FUNCS_IMPL(sub_fetch, SUB_FETCH, bits) \
\
public: /* operator++ && operator-- */ \
\
EASTL_ATOMIC_POINTER_FETCH_INC_DEC_OPERATOR_IMPL(++, add_fetch, fetch_add) \
\
EASTL_ATOMIC_POINTER_FETCH_INC_DEC_OPERATOR_IMPL(--, sub_fetch, fetch_sub) \
\
public: /* operator+= && operator-= */ \
\
EASTL_ATOMIC_POINTER_FETCH_ASSIGNMENT_OPERATOR_IMPL(+=, add_fetch) \
\
EASTL_ATOMIC_POINTER_FETCH_ASSIGNMENT_OPERATOR_IMPL(-=, sub_fetch) \
\
public: \
\
using Base::load; \
\
T* load(eastl::internal::memory_order_read_depends_s) EA_NOEXCEPT \
{ \
T* retPointer; \
EA_PREPROCESSOR_JOIN(EASTL_ATOMIC_LOAD_READ_DEPENDS_, bits)(T*, retPointer, this->GetAtomicAddress()); \
return retPointer; \
} \
};
#if defined(EASTL_ATOMIC_HAS_32BIT) && EA_PLATFORM_PTR_SIZE == 4
EASTL_ATOMIC_POINTER_WIDTH_SPECIALIZE(4, 32)
#endif
#if defined(EASTL_ATOMIC_HAS_64BIT) && EA_PLATFORM_PTR_SIZE == 8
EASTL_ATOMIC_POINTER_WIDTH_SPECIALIZE(8, 64)
#endif
} // namespace internal
} // namespace eastl
#include "atomic_pop_compiler_options.h"
#endif /* EASTL_ATOMIC_INTERNAL_POINTER_H */
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