time.h

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/*
 * FreeRTOS POSIX V1.2.0
 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * http://aws.amazon.com/freertos
 * http://www.FreeRTOS.org
 */
 
#ifndef _FREERTOS_POSIX_TIME_H_
#define _FREERTOS_POSIX_TIME_H_
 
/* FreeRTOS+POSIX includes. */
#include "FreeRTOS_POSIX/sys/types.h"
#include "FreeRTOS_POSIX/signal.h"
 
#define MICROSECONDS_PER_SECOND    ( 1000000LL )                                   
#define NANOSECONDS_PER_SECOND     ( 1000000000LL )                                
#define NANOSECONDS_PER_TICK       ( NANOSECONDS_PER_SECOND / configTICK_RATE_HZ ) 
#define CLOCK_REALTIME     0     
#define CLOCK_MONOTONIC    1     
#define CLOCKS_PER_SEC    ( ( clock_t ) configTICK_RATE_HZ )
 
#define TIMER_ABSTIME    0x01
 
#if !defined( posixconfigENABLE_TIMESPEC ) || ( posixconfigENABLE_TIMESPEC == 1 )
 
    struct timespec
    {
        time_t tv_sec; 
        long tv_nsec;  
    };
#endif
 
#if !defined( posixconfigENABLE_ITIMERSPEC ) || ( posixconfigENABLE_ITIMERSPEC == 1 )
 
    struct itimerspec
    {
        struct timespec it_interval; 
        struct timespec it_value;    
    };
#endif
 
clock_t clock( void );
 
int clock_getcpuclockid( pid_t pid,
                         clockid_t * clock_id );
 
int clock_getres( clockid_t clock_id,
                  struct timespec * res );
 
int clock_gettime( clockid_t clock_id,
                   struct timespec * tp );
 
int clock_nanosleep( clockid_t clock_id,
                     int flags,
                     const struct timespec * rqtp,
                     struct timespec * rmtp );
 
int clock_settime( clockid_t clock_id,
                   const struct timespec * tp );
 
int nanosleep( const struct timespec * rqtp,
               struct timespec * rmtp );
 
int timer_create( clockid_t clockid,
                  struct sigevent * evp,
                  timer_t * timerid );
 
int timer_delete( timer_t timerid );
 
int timer_getoverrun( timer_t timerid );
 
int timer_gettime( timer_t timerid,
                   struct itimerspec * value );
 
int timer_settime( timer_t timerid,
                   int flags,
                   const struct itimerspec * value,
                   struct itimerspec * ovalue );
 
#endif /* ifndef _FREERTOS_POSIX_TIME_H_ */