static int prvCalculateTickTimeout()

in FreeRTOS-Plus-POSIX/source/FreeRTOS_POSIX_mqueue.c [154:199]

35 lines of code
8 McCabe index (conditional complexity)


static int prvCalculateTickTimeout( long lMessageQueueFlags,
                                    const struct timespec * const pxAbsoluteTimeout,
                                    TickType_t * pxTimeoutTicks )
{
    int iStatus = 0;

    /* Check for nonblocking queue. */
    if( lMessageQueueFlags & O_NONBLOCK )
    {
        /* No additional checks are done for nonblocking queues. Timeout is 0. */
        *pxTimeoutTicks = 0;
    }
    else
    {
        /* No absolute timeout given. Block forever. */
        if( pxAbsoluteTimeout == NULL )
        {
            *pxTimeoutTicks = portMAX_DELAY;
        }
        else
        {
            struct timespec xCurrentTime = { 0 };

            /* Check that the given timespec is valid. */
            if( UTILS_ValidateTimespec( pxAbsoluteTimeout ) == false )
            {
                iStatus = EINVAL;
            }

            /* Get current time */
            if( ( iStatus == 0 ) && ( clock_gettime( CLOCK_REALTIME, &xCurrentTime ) != 0 ) )
            {
                iStatus = EINVAL;
            }

            /* Convert absolute timespec to ticks. */
            if( ( iStatus == 0 ) &&
                ( UTILS_AbsoluteTimespecToDeltaTicks( pxAbsoluteTimeout, &xCurrentTime, pxTimeoutTicks ) != 0 ) )
            {
                iStatus = ETIMEDOUT;
            }
        }
    }

    return iStatus;
}