UeventObserver.h revision 5094bbf4cbe9b244d79ce5ec52a9285978fff311
1/* 2// Copyright (c) 2014 Intel Corporation 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#ifndef UEVENT_OBSERVER_H 17#define UEVENT_OBSERVER_H 18 19#include <utils/KeyedVector.h> 20#include <utils/String8.h> 21#include <common/base/SimpleThread.h> 22 23namespace android { 24namespace intel { 25 26typedef void (*UeventListenerFunc)(void *data); 27 28class UeventObserver 29{ 30public: 31 UeventObserver(); 32 virtual ~UeventObserver(); 33 34public: 35 bool initialize(); 36 void deinitialize(); 37 void start(); 38 void registerListener(const char *event, UeventListenerFunc func, void *data); 39 40private: 41 DECLARE_THREAD(UeventObserverThread, UeventObserver); 42 void onUevent(); 43 44private: 45 enum { 46 UEVENT_MSG_LEN = 4096, 47 }; 48 49 char mUeventMessage[UEVENT_MSG_LEN]; 50 int mUeventFd; 51 int mExitRDFd; 52 int mExitWDFd; 53 struct UeventListener { 54 UeventListenerFunc func; 55 void *data; 56 }; 57 KeyedVector<String8, UeventListener*> mListeners; 58}; 59 60} // namespace intel 61} // namespace android 62 63#endif 64 65