| /* |
| * 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. |
| */ |
| |
| #pragma once |
| |
| #include <binder/IBinder.h> |
| #include <binder/RpcAddress.h> |
| #include <utils/KeyedVector.h> |
| #include <utils/Mutex.h> |
| #include <utils/threads.h> |
| |
| #include <unordered_map> |
| #include <variant> |
| |
| // --------------------------------------------------------------------------- |
| namespace android { |
| |
| class RpcSession; |
| class RpcState; |
| namespace internal { |
| class Stability; |
| } |
| class ProcessState; |
| |
| using binder_proxy_limit_callback = void(*)(int); |
| |
| class BpBinder : public IBinder |
| { |
| public: |
| static sp<BpBinder> create(int32_t handle); |
| static sp<BpBinder> create(const sp<RpcSession>& session, const RpcAddress& address); |
| |
| /** |
| * Return value: |
| * true - this is associated with a socket RpcSession |
| * false - (usual) binder over e.g. /dev/binder |
| */ |
| bool isRpcBinder() const; |
| |
| virtual const String16& getInterfaceDescriptor() const; |
| virtual bool isBinderAlive() const; |
| virtual status_t pingBinder(); |
| virtual status_t dump(int fd, const Vector<String16>& args); |
| |
| // NOLINTNEXTLINE(google-default-arguments) |
| virtual status_t transact( uint32_t code, |
| const Parcel& data, |
| Parcel* reply, |
| uint32_t flags = 0) final; |
| |
| // NOLINTNEXTLINE(google-default-arguments) |
| virtual status_t linkToDeath(const sp<DeathRecipient>& recipient, |
| void* cookie = nullptr, |
| uint32_t flags = 0); |
| |
| // NOLINTNEXTLINE(google-default-arguments) |
| virtual status_t unlinkToDeath( const wp<DeathRecipient>& recipient, |
| void* cookie = nullptr, |
| uint32_t flags = 0, |
| wp<DeathRecipient>* outRecipient = nullptr); |
| |
| virtual void attachObject( const void* objectID, |
| void* object, |
| void* cleanupCookie, |
| object_cleanup_func func) final; |
| virtual void* findObject(const void* objectID) const final; |
| virtual void detachObject(const void* objectID) final; |
| |
| virtual BpBinder* remoteBinder(); |
| |
| void sendObituary(); |
| |
| static uint32_t getBinderProxyCount(uint32_t uid); |
| static void getCountByUid(Vector<uint32_t>& uids, Vector<uint32_t>& counts); |
| static void enableCountByUid(); |
| static void disableCountByUid(); |
| static void setCountByUidEnabled(bool enable); |
| static void setLimitCallback(binder_proxy_limit_callback cb); |
| static void setBinderProxyCountWatermarks(int high, int low); |
| |
| class ObjectManager |
| { |
| public: |
| ObjectManager(); |
| ~ObjectManager(); |
| |
| void attach( const void* objectID, |
| void* object, |
| void* cleanupCookie, |
| IBinder::object_cleanup_func func); |
| void* find(const void* objectID) const; |
| void detach(const void* objectID); |
| |
| void kill(); |
| |
| private: |
| ObjectManager(const ObjectManager&); |
| ObjectManager& operator=(const ObjectManager&); |
| |
| struct entry_t |
| { |
| void* object; |
| void* cleanupCookie; |
| IBinder::object_cleanup_func func; |
| }; |
| |
| KeyedVector<const void*, entry_t> mObjects; |
| }; |
| |
| class PrivateAccessorForId { |
| private: |
| friend class BpBinder; |
| friend class ::android::Parcel; |
| friend class ::android::ProcessState; |
| friend class ::android::RpcState; |
| explicit PrivateAccessorForId(const BpBinder* binder) : mBinder(binder) {} |
| |
| // valid if !isRpcBinder |
| int32_t binderHandle() const { return mBinder->binderHandle(); } |
| |
| // valid if isRpcBinder |
| const RpcAddress& rpcAddress() const { return mBinder->rpcAddress(); } |
| const sp<RpcSession>& rpcSession() const { return mBinder->rpcSession(); } |
| |
| const BpBinder* mBinder; |
| }; |
| const PrivateAccessorForId getPrivateAccessorForId() const { |
| return PrivateAccessorForId(this); |
| } |
| |
| private: |
| friend PrivateAccessorForId; |
| friend class sp<BpBinder>; |
| |
| struct BinderHandle { |
| int32_t handle; |
| }; |
| struct RpcHandle { |
| sp<RpcSession> session; |
| RpcAddress address; |
| }; |
| using Handle = std::variant<BinderHandle, RpcHandle>; |
| |
| int32_t binderHandle() const; |
| const RpcAddress& rpcAddress() const; |
| const sp<RpcSession>& rpcSession() const; |
| |
| explicit BpBinder(Handle&& handle); |
| BpBinder(BinderHandle&& handle, int32_t trackedUid); |
| explicit BpBinder(RpcHandle&& handle); |
| |
| virtual ~BpBinder(); |
| virtual void onFirstRef(); |
| virtual void onLastStrongRef(const void* id); |
| virtual bool onIncStrongAttempted(uint32_t flags, const void* id); |
| |
| friend ::android::internal::Stability; |
| |
| int32_t mStability; |
| Handle mHandle; |
| |
| struct Obituary { |
| wp<DeathRecipient> recipient; |
| void* cookie; |
| uint32_t flags; |
| }; |
| |
| void reportOneDeath(const Obituary& obit); |
| bool isDescriptorCached() const; |
| |
| mutable Mutex mLock; |
| volatile int32_t mAlive; |
| volatile int32_t mObitsSent; |
| Vector<Obituary>* mObituaries; |
| ObjectManager mObjects; |
| mutable String16 mDescriptorCache; |
| int32_t mTrackedUid; |
| |
| static Mutex sTrackingLock; |
| static std::unordered_map<int32_t,uint32_t> sTrackingMap; |
| static int sNumTrackedUids; |
| static std::atomic_bool sCountByUidEnabled; |
| static binder_proxy_limit_callback sLimitCallback; |
| static uint32_t sBinderProxyCountHighWatermark; |
| static uint32_t sBinderProxyCountLowWatermark; |
| static bool sBinderProxyThrottleCreate; |
| }; |
| |
| } // namespace android |
| |
| // --------------------------------------------------------------------------- |