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