| /* |
| * 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_PROCESS_STATE_H |
| #define ANDROID_PROCESS_STATE_H |
| |
| #include <binder/IBinder.h> |
| #include <utils/KeyedVector.h> |
| #include <utils/String8.h> |
| #include <utils/String16.h> |
| |
| #include <utils/threads.h> |
| |
| #include <pthread.h> |
| |
| // --------------------------------------------------------------------------- |
| namespace android { |
| |
| class IPCThreadState; |
| |
| class ProcessState : public virtual RefBase |
| { |
| public: |
| static sp<ProcessState> self(); |
| static sp<ProcessState> selfOrNull(); |
| |
| /* initWithDriver() can be used to configure libbinder to use |
| * a different binder driver dev node. It must be called *before* |
| * any call to ProcessState::self(). The default is /dev/vndbinder |
| * for processes built with the VNDK and /dev/binder for those |
| * which are not. |
| */ |
| static sp<ProcessState> initWithDriver(const char *driver); |
| |
| sp<IBinder> getContextObject(const sp<IBinder>& caller); |
| |
| void startThreadPool(); |
| |
| typedef bool (*context_check_func)(const String16& name, |
| const sp<IBinder>& caller, |
| void* userData); |
| |
| bool becomeContextManager( |
| context_check_func checkFunc, |
| void* userData); |
| |
| sp<IBinder> getStrongProxyForHandle(int32_t handle); |
| void expungeHandle(int32_t handle, IBinder* binder); |
| |
| void spawnPooledThread(bool isMain); |
| |
| status_t setThreadPoolMaxThreadCount(size_t maxThreads); |
| void giveThreadPoolName(); |
| |
| String8 getDriverName(); |
| |
| ssize_t getKernelReferences(size_t count, uintptr_t* buf); |
| |
| // Only usable by the context manager. |
| // This refcount includes: |
| // 1. Strong references to the node by this and other processes |
| // 2. Temporary strong references held by the kernel during a |
| // transaction on the node. |
| // It does NOT include local strong references to the node |
| ssize_t getStrongRefCountForNodeByHandle(int32_t handle); |
| |
| enum class CallRestriction { |
| // all calls okay |
| NONE, |
| // log when calls are blocking |
| ERROR_IF_NOT_ONEWAY, |
| // abort process on blocking calls |
| FATAL_IF_NOT_ONEWAY, |
| }; |
| // Sets calling restrictions for all transactions in this process. This must be called |
| // before any threads are spawned. |
| void setCallRestriction(CallRestriction restriction); |
| |
| private: |
| friend class IPCThreadState; |
| |
| explicit ProcessState(const char* driver); |
| ~ProcessState(); |
| |
| ProcessState(const ProcessState& o); |
| ProcessState& operator=(const ProcessState& o); |
| String8 makeBinderThreadName(); |
| |
| struct handle_entry { |
| IBinder* binder; |
| RefBase::weakref_type* refs; |
| }; |
| |
| handle_entry* lookupHandleLocked(int32_t handle); |
| |
| String8 mDriverName; |
| int mDriverFD; |
| void* mVMStart; |
| |
| // Protects thread count variable below. |
| pthread_mutex_t mThreadCountLock; |
| pthread_cond_t mThreadCountDecrement; |
| // Number of binder threads current executing a command. |
| size_t mExecutingThreadsCount; |
| // Maximum number for binder threads allowed for this process. |
| size_t mMaxThreads; |
| // Time when thread pool was emptied |
| int64_t mStarvationStartTimeMs; |
| |
| mutable Mutex mLock; // protects everything below. |
| |
| Vector<handle_entry>mHandleToObject; |
| |
| context_check_func mBinderContextCheckFunc; |
| void* mBinderContextUserData; |
| |
| String8 mRootDir; |
| bool mThreadPoolStarted; |
| volatile int32_t mThreadPoolSeq; |
| |
| CallRestriction mCallRestriction; |
| }; |
| |
| } // namespace android |
| |
| // --------------------------------------------------------------------------- |
| |
| #endif // ANDROID_PROCESS_STATE_H |