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https://github.com/NVIDIA/open-gpu-kernel-modules.git
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105 lines
3.7 KiB
C++
105 lines
3.7 KiB
C++
/*
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* SPDX-FileCopyrightText: Copyright (c) 1993-2021 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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/******************************* DisplayPort********************************\
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* *
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* Module: dp_timer.h *
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* Local timer interface *
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* *
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\***************************************************************************/
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#ifndef INCLUDED_DP_TIMER_H
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#define INCLUDED_DP_TIMER_H
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#include "dp_list.h"
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namespace DisplayPort
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{
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//
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// RawTimer
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// This API is expected to be implemented by the
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// library client.
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//
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class RawTimer : virtual public Object
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{
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public:
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struct Callback : virtual public Object
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{
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virtual void expired() = 0;
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};
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virtual void queueCallback(Callback * callback, int milliseconds) = 0;
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virtual NvU64 getTimeUs() = 0;
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virtual void sleep(int milliseconds) = 0;
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};
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//
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// Timer
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//
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class Timer : public RawTimer::Callback
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{
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public:
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struct TimerCallback
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{
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virtual void expired(const void * context) = 0;
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};
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private:
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RawTimer * raw;
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NvU64 nextTimestamp;
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List pending;
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struct PendingCallback : ListElement
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{
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TimerCallback * target;
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const void * context;
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NvU64 timestamp; // in usec
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bool executeInSleep;
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};
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virtual void expired();
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unsigned fire(bool fromSleep);
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void _pump(unsigned milliseconds, bool fromSleep);
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public:
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Timer(RawTimer * raw) : raw(raw) {}
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virtual ~Timer() {}
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//
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// Queue a timer callback.
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// Unless the dont-execute-in-sleep flag is
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//
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void queueCallback(Timer::TimerCallback * target, const void * context, unsigned milliseconds, bool executeInSleep = true);
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NvU64 getTimeUs();
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void sleep(unsigned milliseconds);
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void cancelCallbacks(Timer::TimerCallback * to);
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void cancelCallback(Timer::TimerCallback * to, const void * context);
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void queueCallbackInOrder(Timer::TimerCallback * target, const void * context, unsigned milliseconds, bool executeInSleep);
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void cancelCallbacksWithoutContext(const void * context);
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void cancelAllCallbacks();
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bool checkCallbacksOfSameContext(const void * context);
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};
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}
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#endif //INCLUDED_DP_TIMER_H
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