OtaOsStatus_t Posix_OtaStartTimer()

in source/portable/os/ota_os_posix.c [244:317]
54 lines of code
5 McCabe index (conditional complexity)

OtaOsStatus_t Posix_OtaStartTimer( OtaTimerId_t otaTimerId,
                                   const char * const pTimerName,
                                   const uint32_t timeout,
                                   OtaTimerCallback_t callback )
{
    OtaOsStatus_t otaOsStatus = OtaOsSuccess;

    /* Create the timer structures. */
    struct sigevent sgEvent;
    struct itimerspec timerAttr;

    ( void ) pTimerName;

    /* clear everything in the structures. */
    ( void ) memset( &sgEvent, 0, sizeof( struct sigevent ) );
    ( void ) memset( &timerAttr, 0, sizeof( struct itimerspec ) );

    /* Set attributes. */
    sgEvent.sigev_notify = SIGEV_THREAD;
    sgEvent.sigev_value.sival_ptr = ( void * ) otaTimers[ otaTimerId ];
    sgEvent.sigev_notify_function = timerCallback[ otaTimerId ];

    /* Set OTA lib callback. */
    otaTimerCallback = callback;

    /* Set timeout attributes.*/
    timerAttr.it_value.tv_sec = ( time_t ) timeout / 1000;

    /* Create timer if required.*/
    if( pOtaTimers[ otaTimerId ] == NULL )
    {
        errno = 0;

        if( timer_create( CLOCK_REALTIME, &sgEvent, &otaTimers[ otaTimerId ] ) == -1 )
        {
            otaOsStatus = OtaOsTimerCreateFailed;

            LogError( ( "Failed to create OTA timer: "
                        "timer_create returned error: "
                        "OtaOsStatus_t=%i "
                        ",errno=%s",
                        otaOsStatus,
                        strerror( errno ) ) );
        }
        else
        {
            pOtaTimers[ otaTimerId ] = &otaTimers[ otaTimerId ];
        }
    }

    /* Set timeout.*/
    if( pOtaTimers[ otaTimerId ] != NULL )
    {
        errno = 0;

        if( timer_settime( otaTimers[ otaTimerId ], 0, &timerAttr, NULL ) == -1 )
        {
            otaOsStatus = OtaOsTimerStartFailed;

            LogError( ( "Failed to set OTA timer timeout: "
                        "timer_settime returned error: "
                        "OtaOsStatus_t=%i "
                        ",errno=%s",
                        otaOsStatus,
                        strerror( errno ) ) );
        }
        else
        {
            LogDebug( ( "OTA Timer started." ) );
        }
    }

    return otaOsStatus;
}