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34 lines
956 B
C
34 lines
956 B
C
// Copyright 2018 plutoo
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#pragma once
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#include "../kernel/wait.h"
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typedef struct UsermodeTimer UsermodeTimer;
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struct UsermodeTimer
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{
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Waitable waitable;
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u64 next_tick;
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u64 interval;
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};
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/**
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* @brief Creates a usermode timer.
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* @param[out] t UsermodeTimer object.
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* @param[in] interval Interval (in nanoseconds).
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* @param[in] start Whether to start the timer right away.
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* @note It is safe to wait on this timer with several threads simultaneously.
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* @note If more than one thread is listening on it, at least one thread will get the signal. No other guarantees.
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* @note If the timer triggers twice before you wait on it, you will only get one signal.
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*/
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void utimerCreate(UsermodeTimer* t, u64 interval, bool start);
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/**
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* @brief Starts the timer.
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* @param[in] t UsermodeTimer object.
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*/
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void utimerStart(UsermodeTimer* t);
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/**
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* @brief Stops the timer.
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* @param[in] t UsermodeTimer object.
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*/
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void utimerStop(UsermodeTimer* t);
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