Re: Semaphore / Synchronizing write operations

Sorry, I didn't specify the netsnmp version.

Due to hardware restraints, I'm using version 5.1.4.



In the net-snmp-5.1.4.tar\net-snmp-5.1.4\agent\mibgroup\mibII\setSerialNo.c
the lock mechanism is implemented in a different way :



    oid             my_registration_oid[] = { 1, 3, 6, 1, 6, 3, 1, 1, 6, 1,
0 };



    netsnmp_register_long_instance("snmpSetSerialNo",
                                   my_registration_oid,
                                   OID_LENGTH(my_registration_oid),
                                   &setserialno,
                                   netsnmp_setserialno_handler);



Is netsnmp_register_watched_spinlock available in 5.1.4 Version ??

If not, should i use this approach to implement the lock mechanism ?



Thanks once again.



----- Original Message ----- 
From: "Dave Shield" <[email protected]>
To: "vsaavedra" <[email protected]>
Cc: <[email protected]>
Sent: Tuesday, October 23, 2007 2:45 PM
Subject: Re: Semaphore / Synchronizing write operations


> On 23/10/2007, vsaavedra <[email protected]> wrote:
> > The agent/mibgroup/mibII/setSerialNo.c dont use the
> >
> > netsnmp_register_watched_spinlock(  netsnmp_handler_registration
> > *reginfo,int *spinlock)  function!
>
>
> Oh yes it does!
>
> static int     setserialno;
> void
> init_setSerialNo(void)
> {
>     oid set_serial_oid[] = { 1, 3, 6, 1, 6, 3, 1, 1, 6, 1 };
>
>     netsnmp_register_watched_spinlock(
>         netsnmp_create_handler_registration("snmpSetSerialNo", NULL,
>                                    set_serial_oid,
>                                    OID_LENGTH(set_serial_oid),
>                                    HANDLER_CAN_RWRITE),
>                                        &setserialno );
> }
>
>
>
> > For a simple scenario, whats the best aproach?
>
> See above.
>
> Dave


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