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/////////////////////////////////////////////////////////////////////////////////
// Copyright (c) Electronic Arts Inc. All rights reserved.
/////////////////////////////////////////////////////////////////////////////////
#ifndef EASTL_ATOMIC_INTERNA_ATOMIC_FLAG_H
#define EASTL_ATOMIC_INTERNA_ATOMIC_FLAG_H
#if defined(EA_PRAGMA_ONCE_SUPPORTED)
#pragma once
#endif
#include "atomic_push_compiler_options.h"
namespace eastl
{
class atomic_flag
{
public: /* ctors */
EA_CONSTEXPR atomic_flag(bool desired) EA_NOEXCEPT
: mFlag{ desired }
{
}
EA_CONSTEXPR atomic_flag() EA_NOEXCEPT
: mFlag{ false }
{
}
public: /* deleted ctors && assignment operators */
atomic_flag(const atomic_flag&) EA_NOEXCEPT = delete;
atomic_flag& operator=(const atomic_flag&) EA_NOEXCEPT = delete;
atomic_flag& operator=(const atomic_flag&) volatile EA_NOEXCEPT = delete;
public: /* clear */
template <typename Order>
void clear(Order order) volatile EA_NOEXCEPT
{
EASTL_ATOMIC_STATIC_ASSERT_VOLATILE_MEM_FN(Order);
}
template <typename Order>
void clear(Order order) EA_NOEXCEPT
{
EASTL_ATOMIC_STATIC_ASSERT_INVALID_MEMORY_ORDER(Order);
}
void clear(eastl::internal::memory_order_relaxed_s) EA_NOEXCEPT
{
mFlag.store(false, eastl::memory_order_relaxed);
}
void clear(eastl::internal::memory_order_release_s) EA_NOEXCEPT
{
mFlag.store(false, eastl::memory_order_release);
}
void clear(eastl::internal::memory_order_seq_cst_s) EA_NOEXCEPT
{
mFlag.store(false, eastl::memory_order_seq_cst);
}
void clear() EA_NOEXCEPT
{
mFlag.store(false, eastl::memory_order_seq_cst);
}
public: /* test_and_set */
template <typename Order>
bool test_and_set(Order order) volatile EA_NOEXCEPT
{
EASTL_ATOMIC_STATIC_ASSERT_VOLATILE_MEM_FN(Order);
return false;
}
template <typename Order>
bool test_and_set(Order order) EA_NOEXCEPT
{
EASTL_ATOMIC_STATIC_ASSERT_INVALID_MEMORY_ORDER(Order);
return false;
}
bool test_and_set(eastl::internal::memory_order_relaxed_s) EA_NOEXCEPT
{
return mFlag.exchange(true, eastl::memory_order_relaxed);
}
bool test_and_set(eastl::internal::memory_order_acquire_s) EA_NOEXCEPT
{
return mFlag.exchange(true, eastl::memory_order_acquire);
}
bool test_and_set(eastl::internal::memory_order_release_s) EA_NOEXCEPT
{
return mFlag.exchange(true, eastl::memory_order_release);
}
bool test_and_set(eastl::internal::memory_order_acq_rel_s) EA_NOEXCEPT
{
return mFlag.exchange(true, eastl::memory_order_acq_rel);
}
bool test_and_set(eastl::internal::memory_order_seq_cst_s) EA_NOEXCEPT
{
return mFlag.exchange(true, eastl::memory_order_seq_cst);
}
bool test_and_set() EA_NOEXCEPT
{
return mFlag.exchange(true, eastl::memory_order_seq_cst);
}
public: /* test */
template <typename Order>
bool test(Order order) const volatile EA_NOEXCEPT
{
EASTL_ATOMIC_STATIC_ASSERT_VOLATILE_MEM_FN(Order);
return false;
}
template <typename Order>
bool test(Order order) const EA_NOEXCEPT
{
EASTL_ATOMIC_STATIC_ASSERT_INVALID_MEMORY_ORDER(Order);
return false;
}
bool test(eastl::internal::memory_order_relaxed_s) const EA_NOEXCEPT
{
return mFlag.load(eastl::memory_order_relaxed);
}
bool test(eastl::internal::memory_order_acquire_s) const EA_NOEXCEPT
{
return mFlag.load(eastl::memory_order_acquire);
}
bool test(eastl::internal::memory_order_seq_cst_s) const EA_NOEXCEPT
{
return mFlag.load(eastl::memory_order_seq_cst);
}
bool test() const EA_NOEXCEPT
{
return mFlag.load(eastl::memory_order_seq_cst);
}
private:
eastl::atomic<bool> mFlag;
};
} // namespace eastl
#include "atomic_pop_compiler_options.h"
#endif /* EASTL_ATOMIC_INTERNA_ATOMIC_FLAG_H */
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