int UTILS_AbsoluteTimespecToDeltaTicks()

in FreeRTOS-Plus-POSIX/source/FreeRTOS_POSIX_utils.c [62:99]

• 28 lines of code
• 8 McCabe index (conditional complexity)

int UTILS_AbsoluteTimespecToDeltaTicks( const struct timespec * const pxAbsoluteTime,
                                        const struct timespec * const pxCurrentTime,
                                        TickType_t * const pxResult )
{
    int iStatus = 0;
    struct timespec xDifference = { 0 };

    /* Check parameters. */
    if( ( pxAbsoluteTime == NULL ) || ( pxCurrentTime == NULL ) || ( pxResult == NULL ) )
    {
        iStatus = EINVAL;
    }

    /* Calculate the difference between the current time and absolute time. */
    if( iStatus == 0 )
    {
        iStatus = UTILS_TimespecSubtract( pxAbsoluteTime, pxCurrentTime, &xDifference );

        if( iStatus == 1 )
        {
            /* pxAbsoluteTime was in the past. */
            iStatus = ETIMEDOUT;
        }
        else if( iStatus == -1 )
        {
            /* error */
            iStatus = EINVAL;
        }
    }

    /* Convert the time difference to ticks. */
    if( iStatus == 0 )
    {
        iStatus = UTILS_TimespecToTicks( &xDifference, pxResult );
    }

    return iStatus;
}