ref: 02ac617541ca1a7bf82b1615fb5a58235469b5d3
dir: /module/exception.m/
Exception: module{
PATH: con "/dis/lib/exception.dis";
# returns the last exception in the form pc, module, exception
# on the process with the given pid (-1 gives current process)
# returns (0, nil, nil) if no exception
getexc: fn(pid: int): (int, string, string);
NOTIFYLEADER, PROPAGATE: con iota;
# set the exception mode(NOTIFYLEADER or PROPAGATE)
# on the current process
# it is assumed that the process is a group leader (see Sys->NEWPGRP)
# returns -1 on failure, 0 on success
setexcmode: fn(mode: int): int;
};