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39 lines
984 B
C++
39 lines
984 B
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_MAC_SCOPED_IOPLUGININTERFACE_H_
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#define BASE_MAC_SCOPED_IOPLUGININTERFACE_H_
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#include <IOKit/IOKitLib.h>
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#include "base/mac/scoped_typeref.h"
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namespace base {
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namespace mac {
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namespace internal {
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template <typename T>
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struct ScopedIOPluginInterfaceTraits {
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static T InvalidValue() { return nullptr; }
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static T Retain(T t) {
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(*t)->AddRef(t);
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return t;
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}
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static void Release(T t) { (*t)->Release(t); }
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};
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} // namespace internal
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// Just like ScopedCFTypeRef but for IOCFPlugInInterface and friends
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// (IOUSBInterfaceStruct and IOUSBDeviceStruct320 in particular).
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template <typename T>
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using ScopedIOPluginInterface =
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ScopedTypeRef<T**, internal::ScopedIOPluginInterfaceTraits<T**>>;
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} // namespace mac
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} // namespace base
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#endif // BASE_MAC_SCOPED_IOPLUGININTERFACE_H_
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