1 /* 2 * Copyright (C) 2005 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_HARDWARE_PROCESS_STATE_H 18 #define ANDROID_HARDWARE_PROCESS_STATE_H 19 20 #include <hwbinder/IBinder.h> 21 #include <utils/KeyedVector.h> 22 #include <utils/String8.h> 23 #include <utils/String16.h> 24 25 #include <utils/threads.h> 26 27 #include <pthread.h> 28 29 // --------------------------------------------------------------------------- 30 namespace android { 31 namespace hardware { 32 33 class IPCThreadState; 34 35 class ProcessState : public virtual RefBase 36 { 37 public: 38 static sp<ProcessState> self(); 39 40 void setContextObject(const sp<IBinder>& object); 41 sp<IBinder> getContextObject(const sp<IBinder>& caller); 42 43 void setContextObject(const sp<IBinder>& object, 44 const String16& name); 45 sp<IBinder> getContextObject(const String16& name, 46 const sp<IBinder>& caller); 47 48 void startThreadPool(); 49 50 typedef bool (*context_check_func)(const String16& name, 51 const sp<IBinder>& caller, 52 void* userData); 53 54 bool isContextManager(void) const; 55 bool becomeContextManager( 56 context_check_func checkFunc, 57 void* userData); 58 59 sp<IBinder> getStrongProxyForHandle(int32_t handle); 60 wp<IBinder> getWeakProxyForHandle(int32_t handle); 61 void expungeHandle(int32_t handle, IBinder* binder); 62 63 void spawnPooledThread(bool isMain); 64 65 status_t setThreadPoolConfiguration(size_t maxThreads, bool callerJoinsPool); 66 void giveThreadPoolName(); 67 68 private: 69 friend class IPCThreadState; 70 71 ProcessState(); 72 ~ProcessState(); 73 74 ProcessState(const ProcessState& o); 75 ProcessState& operator=(const ProcessState& o); 76 String8 makeBinderThreadName(); 77 78 struct handle_entry { 79 IBinder* binder; 80 RefBase::weakref_type* refs; 81 }; 82 83 handle_entry* lookupHandleLocked(int32_t handle); 84 85 int mDriverFD; 86 void* mVMStart; 87 88 // Protects thread count variable below. 89 pthread_mutex_t mThreadCountLock; 90 pthread_cond_t mThreadCountDecrement; 91 // Number of binder threads current executing a command. 92 size_t mExecutingThreadsCount; 93 // Maximum number for binder threads allowed for this process. 94 size_t mMaxThreads; 95 // Time when thread pool was emptied 96 int64_t mStarvationStartTimeMs; 97 98 mutable Mutex mLock; // protects everything below. 99 100 Vector<handle_entry>mHandleToObject; 101 102 bool mManagesContexts; 103 context_check_func mBinderContextCheckFunc; 104 void* mBinderContextUserData; 105 106 KeyedVector<String16, sp<IBinder> > 107 mContexts; 108 109 110 String8 mRootDir; 111 bool mThreadPoolStarted; 112 bool mSpawnThreadOnStart; 113 volatile int32_t mThreadPoolSeq; 114 }; 115 116 }; // namespace hardware 117 }; // namespace android 118 119 // --------------------------------------------------------------------------- 120 121 #endif // ANDROID_HARDWARE_PROCESS_STATE_H 122