wwivd stability ideas

[wwiv]

From apam@

I don't know if this is helpful or not... in servo (talismans wwivd thing) I
store the pid of each node that is forked off, then each time a new connection
comes in, go through each pid and see if it exists, and if it does check if the
process name is talisman. (The idea being that if the pid gets reused, it will
have a different name, though the likely hood of that happening are very low).
so if it doesn't exist or has a different name, the node is free, otherwise,
it's still in use.

Linux uses the proc filesystem to grab the process name, windows has a
different mechanism, i forget what right now - but the source code is there,
and macOS has libproc (*BSD uses /proc too).