>On 2001-07-29 20:36:15, J. Weeks wrote:
>>On 2001-07-29 18:11:28, mudi wrote:
>>I'm trying to develope a microkernel,and wonder
>>how should I handle the following:
>>
>>A driver (ring1) sends a message to a server(ring2)
>>and waits on reply(no message buffering),but what happens if the server never replies(faulty)
>>That would freeze the driver too !
>>How can I work this around ?
>
>As far as I know, most operating systems don't...
>the driver hangs, and the user is responsible for
>removing it from memory.
>
>I'm sure some people put a time delay in there...
>if the server doesn't respond withen 2 or 3 seconds
>the request is sent again, or the driver fails with
>a message.
>
>Ideally, the server isn't faulty
If it is, the
>programmer realizes this, and produces a bugfix
>withen hours
>
>J. Weeks
>
>>
Ok,let's go a little "downer" what if the same happens
between an "app" and a "server",I try to never
expect the ideal case(my os's point is modularity and stability and simplicity in code).
I think counting on timeout woudl be too expensive !
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