1 /* 2 * xcam_thread.h - Thread 3 * 4 * Copyright (c) 2014 Intel Corporation 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 * 18 * Author: Wind Yuan <feng.yuan (at) intel.com> 19 */ 20 21 #ifndef XCAM_THREAD_H 22 #define XCAM_THREAD_H 23 24 #include <xcam_std.h> 25 #include <xcam_mutex.h> 26 27 namespace XCam { 28 29 class Thread { 30 public: 31 Thread (const char *name = NULL); 32 virtual ~Thread (); 33 34 bool start (); 35 virtual bool emit_stop (); 36 bool stop (); 37 bool is_running (); 38 const char *get_name () const { 39 return _name; 40 } 41 42 protected: 43 // return true to start loop, else the thread stopped 44 virtual bool started (); 45 virtual void stopped (); 46 // return true to continue; false to stop 47 virtual bool loop () = 0; 48 private: 49 XCAM_DEAD_COPY (Thread); 50 51 52 private: 53 static int thread_func (void *user_data); 54 55 private: 56 char *_name; 57 pthread_t _thread_id; 58 XCam::Mutex _mutex; 59 XCam::Cond _exit_cond; 60 bool _started; 61 bool _stopped; 62 }; 63 64 }; 65 66 #endif //XCAM_THREAD_H 67
