crashtest-r0ket/tools/reader/reader-watchdog.pl

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Perl
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#!/usr/bin/perl
use strict;
use POSIX ":sys_wait_h"; # for nonblocking read
use FindBin;
use lib "$FindBin::Bin/lib";
use lib "$FindBin::Bin/../mesh/lib";
use r0ket;
use l0gger;
$|=1;
my $DEV="/dev";
my %run;
my %childs;
my %config;
my @exec;
$SIG{CHLD} = sub {
# don't change $! and $? outside handler
local ($!, $?);
my $pid = waitpid(-1, WNOHANG);
return if $pid == -1;
return unless defined $childs{$pid};
delete $run{$childs{$pid}}; # cleanup?
delete $childs{$pid};
};
# read config
sub readcfg{
%config=();
open(R,"<","reader.cf")|| die "Can't find reader.cf\n";
while(<R>){
chomp;
next unless /(.*?)=(.*)/;
$config{$1}=$2;
};
close(R);
@exec=$config{"prog"},split(/\s+/,$config{"args"});
delete $config{prog};
delete $config{args};
};
readcfg();
l0gger::init();
while(1){
opendir(my $dh, $DEV);
my @paths=grep {/^ttyACM/} readdir($dh);
close $dh;
# print "f: ",join(",",@files),"\n";
for my $path (@paths){
next if $run{$path};
my $id = eval {
r0ket::r0ket_init($DEV."/".$path);
return r0ket::get_id();
};
# print "r0id: $id\n";
if(!defined $config{$id}){
print "No config for r0ket $id @ $path, skipping...\n";
next;
};
$run{$path}=$id;
my $pid = fork();
die "cannot fork" unless defined $pid;
if ($pid == 0) {
exec @exec,'-d',$DEV."/".$path,'-i',$config{$id};
} else {
print "Started $path : $id @ $pid\n";
l0gger::send("started $path : $id @ $pid");
$childs{$pid}=$path;
}
};
sleep(1);
print join(",",map {$run{$childs{$_}}."@".$childs{$_}."[$_]"} sort {$childs{$a}cmp$childs{$b}} keys %childs),"\n";
};