Siva Annamalai
bf5d8f6efc
R=rmacnak@google.com Review URL: https://codereview.chromium.org/1658983004 .
105 lines
3.4 KiB
C++
105 lines
3.4 KiB
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef VM_ATOMIC_WIN_H_
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#define VM_ATOMIC_WIN_H_
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#if !defined VM_ATOMIC_H_
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#error Do not include atomic_win.h directly. Use atomic.h instead.
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#endif
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#if !defined(TARGET_OS_WINDOWS)
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#error This file should only be included on Windows builds.
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#endif
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namespace dart {
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inline uintptr_t AtomicOperations::FetchAndIncrement(uintptr_t* p) {
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#if defined(HOST_ARCH_X64)
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return static_cast<uintptr_t>(
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InterlockedIncrement64(reinterpret_cast<LONGLONG*>(p))) - 1;
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#elif defined(HOST_ARCH_IA32)
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return static_cast<uintptr_t>(
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InterlockedIncrement(reinterpret_cast<LONG*>(p))) - 1;
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#else
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#error Unsupported host architecture.
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#endif
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}
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inline void AtomicOperations::IncrementBy(intptr_t* p, intptr_t value) {
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#if defined(HOST_ARCH_X64)
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InterlockedExchangeAdd64(reinterpret_cast<LONGLONG*>(p),
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static_cast<LONGLONG>(value));
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#elif defined(HOST_ARCH_IA32)
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InterlockedExchangeAdd(reinterpret_cast<LONG*>(p),
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static_cast<LONG>(value));
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#else
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#error Unsupported host architecture.
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#endif
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}
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inline uintptr_t AtomicOperations::FetchAndDecrement(uintptr_t* p) {
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#if defined(HOST_ARCH_X64)
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return static_cast<uintptr_t>(
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InterlockedDecrement64(reinterpret_cast<LONGLONG*>(p))) + 1;
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#elif defined(HOST_ARCH_IA32)
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return static_cast<uintptr_t>(
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InterlockedDecrement(reinterpret_cast<LONG*>(p))) + 1;
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#else
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#error Unsupported host architecture.
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#endif
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}
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inline void AtomicOperations::DecrementBy(intptr_t* p, intptr_t value) {
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#if defined(HOST_ARCH_X64)
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InterlockedExchangeAdd64(reinterpret_cast<LONGLONG*>(p),
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static_cast<LONGLONG>(-value));
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#elif defined(HOST_ARCH_IA32)
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InterlockedExchangeAdd(reinterpret_cast<LONG*>(p),
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static_cast<LONG>(-value));
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#else
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#error Unsupported host architecture.
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#endif
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}
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#if !defined(USING_SIMULATOR)
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inline uword AtomicOperations::CompareAndSwapWord(uword* ptr,
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uword old_value,
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uword new_value) {
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#if defined(HOST_ARCH_X64)
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return static_cast<uword>(
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InterlockedCompareExchange64(reinterpret_cast<LONGLONG*>(ptr),
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static_cast<LONGLONG>(new_value),
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static_cast<LONGLONG>(old_value)));
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#elif defined(HOST_ARCH_IA32)
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return static_cast<uword>(
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InterlockedCompareExchange(reinterpret_cast<LONG*>(ptr),
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static_cast<LONG>(new_value),
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static_cast<LONG>(old_value)));
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#else
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#error Unsupported host architecture.
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#endif
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}
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inline uint32_t AtomicOperations::CompareAndSwapUint32(uint32_t* ptr,
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uint32_t old_value,
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uint32_t new_value) {
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#if (defined(HOST_ARCH_X64) || defined(HOST_ARCH_IA32))
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return static_cast<uint32_t>(
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InterlockedCompareExchange(reinterpret_cast<LONG*>(ptr),
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static_cast<LONG>(new_value),
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static_cast<LONG>(old_value)));
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#else
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#error Unsupported host architecture.
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#endif
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}
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#endif // !defined(USING_SIMULATOR)
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} // namespace dart
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#endif // VM_ATOMIC_WIN_H_
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