83c0446f27
- make sure that all binder Bn classes define a ctor and dtor in their respective library. This avoids duplication of the ctor/dtor in libraries where these objects are instantiated. This is also cleaner, should we want these ctor/dtor to do something one day. - same change as above for some Bp classes and various other non-binder classes - moved the definition of CHECK_INTERFACE() in IInterface.h instead of having it everywhere. - improved the CHECK_INTERFACE() macro so it calls a single method in Parcel, instead of inlining its code everywhere - IBinder::getInterfaceDescriptor() now returns a "const String16&" instead of String16, which saves calls to String16 and ~String16 - implemented a cache for BpBinder::getInterfaceDescriptor(), since this does an IPC. HOWEVER, this method never seems to be called. The cache makes BpBinder bigger, so we need to figure out if we need this method at all.
148 lines
5.0 KiB
C++
148 lines
5.0 KiB
C++
/*
|
|
* Copyright (C) 2005 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
//
|
|
#ifndef ANDROID_IINTERFACE_H
|
|
#define ANDROID_IINTERFACE_H
|
|
|
|
#include <binder/Binder.h>
|
|
|
|
namespace android {
|
|
|
|
// ----------------------------------------------------------------------
|
|
|
|
class IInterface : public virtual RefBase
|
|
{
|
|
public:
|
|
IInterface();
|
|
sp<IBinder> asBinder();
|
|
sp<const IBinder> asBinder() const;
|
|
|
|
protected:
|
|
virtual ~IInterface();
|
|
virtual IBinder* onAsBinder() = 0;
|
|
};
|
|
|
|
// ----------------------------------------------------------------------
|
|
|
|
template<typename INTERFACE>
|
|
inline sp<INTERFACE> interface_cast(const sp<IBinder>& obj)
|
|
{
|
|
return INTERFACE::asInterface(obj);
|
|
}
|
|
|
|
// ----------------------------------------------------------------------
|
|
|
|
template<typename INTERFACE>
|
|
class BnInterface : public INTERFACE, public BBinder
|
|
{
|
|
public:
|
|
virtual sp<IInterface> queryLocalInterface(const String16& _descriptor);
|
|
virtual const String16& getInterfaceDescriptor() const;
|
|
|
|
protected:
|
|
virtual IBinder* onAsBinder();
|
|
};
|
|
|
|
// ----------------------------------------------------------------------
|
|
|
|
template<typename INTERFACE>
|
|
class BpInterface : public INTERFACE, public BpRefBase
|
|
{
|
|
public:
|
|
BpInterface(const sp<IBinder>& remote);
|
|
|
|
protected:
|
|
virtual IBinder* onAsBinder();
|
|
};
|
|
|
|
// ----------------------------------------------------------------------
|
|
|
|
#define DECLARE_META_INTERFACE(INTERFACE) \
|
|
static const String16 descriptor; \
|
|
static sp<I##INTERFACE> asInterface(const sp<IBinder>& obj); \
|
|
virtual const String16& getInterfaceDescriptor() const; \
|
|
I##INTERFACE(); \
|
|
virtual ~I##INTERFACE(); \
|
|
|
|
|
|
#define IMPLEMENT_META_INTERFACE(INTERFACE, NAME) \
|
|
const String16 I##INTERFACE::descriptor(NAME); \
|
|
const String16& I##INTERFACE::getInterfaceDescriptor() const { \
|
|
return I##INTERFACE::descriptor; \
|
|
} \
|
|
sp<I##INTERFACE> I##INTERFACE::asInterface(const sp<IBinder>& obj) \
|
|
{ \
|
|
sp<I##INTERFACE> intr; \
|
|
if (obj != NULL) { \
|
|
intr = static_cast<I##INTERFACE*>( \
|
|
obj->queryLocalInterface( \
|
|
I##INTERFACE::descriptor).get()); \
|
|
if (intr == NULL) { \
|
|
intr = new Bp##INTERFACE(obj); \
|
|
} \
|
|
} \
|
|
return intr; \
|
|
} \
|
|
I##INTERFACE::I##INTERFACE() { } \
|
|
I##INTERFACE::~I##INTERFACE() { } \
|
|
|
|
|
|
#define CHECK_INTERFACE(interface, data, reply) \
|
|
if (!data.checkInterface(this)) { return PERMISSION_DENIED; } \
|
|
|
|
|
|
// ----------------------------------------------------------------------
|
|
// No user-serviceable parts after this...
|
|
|
|
template<typename INTERFACE>
|
|
inline sp<IInterface> BnInterface<INTERFACE>::queryLocalInterface(
|
|
const String16& _descriptor)
|
|
{
|
|
if (_descriptor == INTERFACE::descriptor) return this;
|
|
return NULL;
|
|
}
|
|
|
|
template<typename INTERFACE>
|
|
inline const String16& BnInterface<INTERFACE>::getInterfaceDescriptor() const
|
|
{
|
|
return INTERFACE::getInterfaceDescriptor();
|
|
}
|
|
|
|
template<typename INTERFACE>
|
|
IBinder* BnInterface<INTERFACE>::onAsBinder()
|
|
{
|
|
return this;
|
|
}
|
|
|
|
template<typename INTERFACE>
|
|
inline BpInterface<INTERFACE>::BpInterface(const sp<IBinder>& remote)
|
|
: BpRefBase(remote)
|
|
{
|
|
}
|
|
|
|
template<typename INTERFACE>
|
|
inline IBinder* BpInterface<INTERFACE>::onAsBinder()
|
|
{
|
|
return remote();
|
|
}
|
|
|
|
// ----------------------------------------------------------------------
|
|
|
|
}; // namespace android
|
|
|
|
#endif // ANDROID_IINTERFACE_H
|