iposva@google.com
55357d2993
be executed in generated code. R=koda@google.com, zra@google.com Review URL: https://codereview.chromium.org//677193002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@41332 260f80e4-7a28-3924-810f-c04153c831b5
47 lines
1.3 KiB
C++
47 lines
1.3 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_H_
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#define VM_ATOMIC_H_
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#include "platform/globals.h"
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#include "vm/allocation.h"
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#include "vm/simulator.h"
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namespace dart {
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class AtomicOperations : public AllStatic {
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public:
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// Atomically fetch the value at p and increment the value at p.
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// Returns the original value at p.
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//
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// NOTE: Not to be used for any atomic operations involving memory locations
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// that are accessed by generated code
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static uintptr_t FetchAndIncrement(uintptr_t* p);
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static uword CompareAndSwapWord(uword* ptr, uword old_value, uword new_value);
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};
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} // namespace dart
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// We need to use the simulator to ensure that atomic operations are observed
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// both in C++ and in generated code if the simulator is active.
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#include "vm/atomic_simulator.h"
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#if defined(TARGET_OS_ANDROID)
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#include "vm/atomic_android.h"
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#elif defined(TARGET_OS_LINUX)
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#include "vm/atomic_linux.h"
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#elif defined(TARGET_OS_MACOS)
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#include "vm/atomic_macos.h"
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#elif defined(TARGET_OS_WINDOWS)
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#include "vm/atomic_win.h"
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#else
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#error Unknown target os.
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#endif
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#endif // VM_ATOMIC_H_
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