I've written a fork()ing server which I'm using very happily.

 However I've run into a problem where I wish to persist some data between clients, as the forked() children cannot modify the variables stored in the parent I've fudged this by using FreezeThaw to persist the data to a temporary file.

 This works .. mostly .. but there are issues with synchronization which appear to cause the temporary file to get trashed.

 As I see it I can continue down this route and add locking - or I can solve the problem the right way by creating a shared memory segment in the parent, and writing a hash to that from the client.

 (Each client can write to %persistence{clientip} - as I know that each client connects only once).

 So my questions begin, how can I manage this? Is there some sample somewhere that I can copy?

 I've looked around and I honestly see no real examples of using IPC shared memory under perl.

Steve
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steve.org.uk

In reply to Use of shared memory to persist data between child processes by skx

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