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      1 /*
      2  * Copyright (c) 2012, The Linux Foundation. All rights reserved.
      3 
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *   * Redistributions of source code must retain the above copyright
      8  *     notice, this list of conditions and the following disclaimer.
      9  *   * Redistributions in binary form must reproduce the above
     10  *     copyright notice, this list of conditions and the following
     11  *     disclaimer in the documentation and/or other materials provided
     12  *     with the distribution.
     13  *   * Neither the name of The Linux Foundation nor the names of its
     14  *     contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
     18  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
     20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
     21  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     22  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
     24  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     25  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     26  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
     27  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #ifndef INCLUDE_IDLEINVALIDATOR
     31 #define INCLUDE_IDLEINVALIDATOR
     32 
     33 #include <cutils/log.h>
     34 #include <utils/threads.h>
     35 
     36 typedef void (*InvalidatorHandler)(void*);
     37 
     38 class IdleInvalidator : public android::Thread {
     39     void *mHwcContext;
     40     bool mSleepAgain;
     41     unsigned int mSleepTime;
     42     static InvalidatorHandler mHandler;
     43     static android::sp<IdleInvalidator> sInstance;
     44 
     45     public:
     46     IdleInvalidator();
     47     /* init timer obj */
     48     int init(InvalidatorHandler reg_handler, void* user_data, unsigned int
     49              idleSleepTime);
     50     void markForSleep();
     51     /*Overrides*/
     52     virtual bool        threadLoop();
     53     virtual int         readyToRun();
     54     virtual void        onFirstRef();
     55     static IdleInvalidator *getInstance();
     56 };
     57 
     58 #endif // INCLUDE_IDLEINVALIDATOR
     59