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// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#ifndef VM_ATOMIC_WIN_H_
#define VM_ATOMIC_WIN_H_
#if !defined VM_ATOMIC_H_
#error Do not include atomic_win.h directly. Use atomic.h instead.
#endif
#if !defined(TARGET_OS_WINDOWS)
#error This file should only be included on Windows builds.
#endif
namespace dart {
inline uintptr_t AtomicOperations::FetchAndIncrement(uintptr_t* p) {
#if defined(HOST_ARCH_X64)
return static_cast<uintptr_t>(
InterlockedIncrement64(reinterpret_cast<LONGLONG*>(p))) - 1;
#elif defined(HOST_ARCH_IA32)
return static_cast<uintptr_t>(
InterlockedIncrement(reinterpret_cast<LONG*>(p))) - 1;
#else
#error Unsupported host architecture.
#endif
}
inline uintptr_t AtomicOperations::FetchAndDecrement(uintptr_t* p) {
#if defined(HOST_ARCH_X64)
return static_cast<uintptr_t>(
InterlockedDecrement64(reinterpret_cast<LONGLONG*>(p))) + 1;
#elif defined(HOST_ARCH_IA32)
return static_cast<uintptr_t>(
InterlockedDecrement(reinterpret_cast<LONG*>(p))) + 1;
#else
#error Unsupported host architecture.
#endif
}
#if !defined(USING_SIMULATOR)
inline uword AtomicOperations::CompareAndSwapWord(uword* ptr,
uword old_value,
uword new_value) {
#if defined(HOST_ARCH_X64)
return static_cast<uword>(
InterlockedCompareExchange64(reinterpret_cast<LONGLONG*>(ptr),
static_cast<LONGLONG>(new_value),
static_cast<LONGLONG>(old_value)));
#elif defined(HOST_ARCH_IA32)
return static_cast<uword>(
InterlockedCompareExchange(reinterpret_cast<LONG*>(ptr),
static_cast<LONG>(new_value),
static_cast<LONG>(old_value)));
#else
#error Unsupported host architecture.
#endif
}
#endif // !defined(USING_SIMULATOR)
} // namespace dart
#endif // VM_ATOMIC_WIN_H_