79 lines
3.1 KiB
C++
79 lines
3.1 KiB
C++
/* Copyright (c) 2015, 2020 The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation, nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef __LOC_TIMER_CPP_H__
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#define __LOC_TIMER_CPP_H__
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#include <stddef.h>
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#include <loc_pla.h>
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namespace loc_util {
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// opaque class to provide service implementation.
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class LocTimerDelegate;
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class LocSharedLock;
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// LocTimer client must extend this class and implementthe callback.
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// start() / stop() methods are to arm / disarm timer.
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class LocTimer
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{
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LocTimerDelegate* mTimer;
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LocSharedLock* mLock;
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// don't really want mLock to be manipulated by clients, yet LocTimer
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// has to have a reference to the lock so that the delete of LocTimer
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// and LocTimerDelegate can work together on their share resources.
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friend class LocTimerDelegate;
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public:
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LocTimer();
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virtual ~LocTimer();
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// timeOutInMs: timeout delay in ms
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// wakeOnExpire: true if to wake up CPU (if sleeping) upon timer
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// expiration and notify the client.
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// false if to wait until next time CPU wakes up (if
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// sleeping) and then notify the client.
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// return: true on success;
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// false on failure, e.g. timer is already running.
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bool start(uint32_t timeOutInMs, bool wakeOnExpire);
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// return: true on success;
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// false on failure, e.g. timer is not running.
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bool stop();
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// LocTimer client Should implement this method.
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// This method is used for timeout calling back to client. This method
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// should be short enough (eg: send a message to your own thread).
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virtual void timeOutCallback() = 0;
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};
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} // namespace loc_util
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#endif //__LOC_DELAY_H__
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