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92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/*
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* Copyright (c) 2010, Stefan Lankes, RWTH Aachen University
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* 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 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 copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @author Stefan Lankes
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* @file include/hermit/time.h
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* @brief Time related functions
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*/
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#ifndef __TIME_H__
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#define __TIME_H__
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#include <asm/time.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef uint32_t clock_t;
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struct tms {
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clock_t tms_utime;
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clock_t tms_stime;
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clock_t tms_cutime;
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clock_t tms_cstime;
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};
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/** @brief Initialize Timer interrupts
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*
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* This procedure installs IRQ handlers for timer interrupts
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*/
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int timer_init(void);
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/** @brief Initialized a timer
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*
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* @param ticks Amount of ticks to wait
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* @return
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* - 0 on success
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*/
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int timer_wait(unsigned int ticks);
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DECLARE_PER_CORE(uint64_t, timer_ticks);
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/** @brief Returns the current number of ticks.
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* @return Current number of ticks
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*/
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static inline uint64_t get_clock_tick(void)
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{
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return per_core(timer_ticks);
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}
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/** @brief sleep some seconds
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*
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* This function sleeps some seconds
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*
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* @param sec Amount of seconds to wait
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*/
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static inline void sleep(unsigned int sec) { timer_wait(sec*TIMER_FREQ); }
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/** @brief Get milliseconds since system boot
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*/
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static inline uint64_t get_uptime() { return (get_clock_tick() * 1000) / TIMER_FREQ; }
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#ifdef __cplusplus
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}
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#endif
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#endif
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