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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/include/sys/time.h $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* COPYRIGHT International Business Machines Corp. 2010,2014 */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
#ifndef __SYS_TIME_H
#define __SYS_TIME_H
#include <stdint.h>
#include <kernel/timemgr.H>
//******************************************************************************
// Macros
//******************************************************************************
/**
* @brief Number of nanoseconds per second
*/
#define NS_PER_SEC (1000000000ull)
/**
* @brief Number of nanoseconds per milisecond
*/
#define NS_PER_MSEC (1000000ull)
/**
* @brief Duration of one timeslice/context switch in nanoseconds
*/
#define ONE_CTX_SWITCH_NS (NS_PER_SEC/TimeManager::TIMESLICE_PER_SEC)
/**
* @brief Duration of ten context switches, in nanoseconds; used by testcases
* to guarantee a secondary testcase task/thread will execute
*/
#define TEN_CTX_SWITCHES_NS (ONE_CTX_SWITCH_NS * 10)
//******************************************************************************
// Interface
//******************************************************************************
#ifdef __cplusplus
extern "C"
{
#endif
/** @fn nanosleep()
* @brief Sleep for time duration given: seconds plus nanoseconds.
* @param[in] sec - seconds
* @param[in] nsec - nanoseconds (billionths of a second)
*/
void nanosleep(uint64_t sec, uint64_t nsec);
#ifdef __cplusplus
}
#endif
#endif
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