Re: [tlaplus] How to Specify a Broadcast Channel

Can you please be more specific about what you find complicated? Doesn't

broadcast(sndr, msg) ==

[n \in Node |-> IF n = sndr

THEN [m \in Node |-> Append(chan[n], msg)]

ELSE chan[n]]

do what you want (where "chan" is the variable that represents the N*N matrix of channels)?

Stephan

On 11 Jun 2020, at 06:37, Earnshaw <dongluming77@xxxxxxxxx> wrote:

Dear All:

I am now specifying a distributed system consists of a group of nodes as a cluster.

Some control signals are syncronized to all the members in the cluster by broadcast message. So I must specify the message queue between each consumer and producer.

Now I split the message bus mechanism to a N * N unicast Queue as below:

NodeCtrlChannel = [n \in Node |-> [m \in Node |-> <<>>]]

But it is a little complicated, is there any simplified method to specify it?

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