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/***************************************************************
CPU-TIME-LINUX.H
Linux/i386/ILP32 conversion helpers for the MCPU time ABI.
PART OF : CPU - library .
USAGE : Internal only .
Copyright (C) 2026 by Andrew V.Kosteltsev.
All Rights Reserved.
***************************************************************/
#ifndef __CPU_TIME_LINUX_H
#define __CPU_TIME_LINUX_H
#include <errno.h>
#include <time.h>
static int
__cpu_clockid_to_host( __mpu_uint64_t clockid, clockid_t *host_clockid )
{
if( !host_clockid ) return( __MCPU_EFAULT );
switch( clockid )
{
case __CPU_CLOCK_REALTIME:
*host_clockid = CLOCK_REALTIME;
return( 0 );
case __CPU_CLOCK_MONOTONIC:
*host_clockid = CLOCK_MONOTONIC;
return( 0 );
default:
return( __MCPU_EINVAL );
}
} /* End of __cpu_clockid_to_host() */
static int
__cpu_timespec_from_host( struct __cpu_timespec *dst,
const struct timespec *src )
{
__mpu_int64_t sec;
__mpu_int64_t nsec;
if( !dst || !src ) return( __MCPU_EFAULT );
sec = (__mpu_int64_t)src->tv_sec;
if( (time_t)sec != src->tv_sec ) return( __MCPU_EOVERFLOW );
nsec = (__mpu_int64_t)src->tv_nsec;
if( (long)nsec != src->tv_nsec ) return( __MCPU_EOVERFLOW );
if( nsec < 0 || nsec > 999999999 ) return( __MCPU_EOVERFLOW );
dst->tv_sec = sec;
dst->tv_nsec = nsec;
return( 0 );
} /* End of __cpu_timespec_from_host() */
#endif /* __CPU_TIME_LINUX_H */
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