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Diffstat (limited to 'include/EASTL/internal/atomic/atomic_pointer.h')
| -rw-r--r-- | include/EASTL/internal/atomic/atomic_pointer.h | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/include/EASTL/internal/atomic/atomic_pointer.h b/include/EASTL/internal/atomic/atomic_pointer.h new file mode 100644 index 0000000..18f6691 --- /dev/null +++ b/include/EASTL/internal/atomic/atomic_pointer.h @@ -0,0 +1,281 @@ +///////////////////////////////////////////////////////////////////////////////// +// 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 */ |