Extending spin lock concept to a table column

Good morning!

I have one question regarding the spin lock concept.
In all examples i saw, the use of a spin lock object is only by scalar
objects.
I have a situation where I need to use this concept, but applied to a table.
In this situation, i would have a table column that is a spinlock
(testAndIncr object).

My first question is : Is this possible ?

I tried to implement this approach, but I'm having some problems with it. As
i said, i dont know if this is possible, so i may be trying  to implement a
thing that isnt supported .
Am I doing anything wrong in my code? Thank you for your help.

switch (reqinfo->mode)
    {
        case MODE_SET_RESERVE1:

                for (request=requests; request; request=request->next)
                {
                    if (requests->processed != 0) continue;

                        table_info = netsnmp_extract_table_info(request);

                        switch (table_info->colnum)
                        {
                                case COLUMN_SPINLOCK:

                                        /*if (!cache_entry)
                                        {

netsnmp_set_request_error(reqinfo, request, SNMP_ERR_NOCREATION);
                                                return SNMP_ERR_NOCREATION;
                                        }*/
                                        if ( request->requestvb->type !=
ASN_INTEGER ) {

netsnmp_set_request_error(reqinfo, request, SNMP_ERR_WRONGTYPE);
                                                return SNMP_ERR_WRONGTYPE;
                                        }

                                        rowData =
netsnmp_extract_table_row_data(request);
                                        data =
netsnmp_table_data_set_find_column(rowData,COLUMN_SPINLOCK);
                                        if(data != NULL)
                                                setspinLock  = *((int *)
data->data.voidp);
                                        else
                                                setspinLock = 0;


                                        if (*request->requestvb->val.integer
!= setspinLock)
                                        {

netsnmp_set_request_error(reqinfo, requests,SNMP_ERR_WRONGVALUE);
                                        }
                        }
                }
                break;



switch (reqinfo->mode)
    {
        case MODE_SET_RESERVE1:

                for (request=requests; request; request=request->next)
                {
                    if (requests->processed != 0) continue;

                        table_info = netsnmp_extract_table_info(request);

                        switch (table_info->colnum)
                        {
                                case COLUMN_SPINLOCK:

                                        if ( request->requestvb->type !=
ASN_INTEGER ) {

netsnmp_set_request_error(reqinfo, request, SNMP_ERR_WRONGTYPE);
                                                return SNMP_ERR_WRONGTYPE;
                                        }

                                        rowData =
netsnmp_extract_table_row_data(request);
                                        data =
netsnmp_table_data_set_find_column(rowData,COLUMN_SPINLOCK);
                                        if(data != NULL)
                                                setspinLock  = *((int *)
data->data.voidp);
                                        else
                                                setspinLock = 0;


                                        if (*request->requestvb->val.integer
!= setspinLock)
                                        {

netsnmp_set_request_error(reqinfo, requests,SNMP_ERR_WRONGVALUE);
                                        }
                        }
                }
                break;

        case MODE_SET_ACTION:

                for (request=requests; request; request=request->next)
                {
                        if (requests->processed != 0) continue;
                        table_info = netsnmp_extract_table_info(request);

                        switch (table_info->colnum)
                        {
                                case COLUMN_SPINLOCK:

                                        rowData =
netsnmp_extract_table_row_data(request);
                                        data =
netsnmp_table_data_set_find_column(rowData,COLUMN_SPINLOCK);
                                        if(data != NULL)
                                                data->data.voidp ++;
                                        else
                                                data->data.voidp = 0;
                                        break;
                        }
                }
                break;
    }


Robalo !!!

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