}
my $PAUSETIME = 300;
+my $CRASHTIME = 10;
+my $RESTARTTIME = 0;
my $PID = undef;
my $STATE = "off"; # `off', `on', `killed'
my $WANT = "off"; # `off', `on', `pause'
-my $STOPTIME = undef; # if $WANT eq "pause"
+my $WAKETIME = undef;
my $NOW = time;
$SIG{CHLD} = sub {
+ $NOW = time;
KID: for (;;) {
my $kid = waitpid -1, WNOHANG;
last if $kid <= 0;
if ($kid == $PID) {
mumble "player exited (st = $?)";
$PID = undef; $STATE = "off";
+ if ($WANT eq "on" && $RESTARTTIME > $NOW) { $WAKETIME = $RESTARTTIME; }
}
}
};
exit 0;
};
-sub start () { $WANT = "on"; $STOPTIME = undef; }
+sub start () {
+ if ($WANT ne "on") {
+ $WANT = "on";
+ $WAKETIME = $NOW < $RESTARTTIME ? $RESTARTTIME : undef;
+ }
+}
sub pause () {
- if ($WANT eq "on") { $WANT = "pause"; $STOPTIME = $NOW + $PAUSETIME; }
+ if ($WANT eq "on") { $WANT = "pause"; $WAKETIME = $NOW + $PAUSETIME; }
}
sub fix_state () {
##mumble "state = $STATE ($PID)";
- ##mumble "want = $WANT ($STOPTIME <=> $NOW)";
+ ##mumble "want = $WANT ($WAKETIME <=> $NOW)";
- if ($WANT eq "pause" && $NOW >= $STOPTIME) {
- $WANT = "off"; $STOPTIME = undef;
+ if ($WANT eq "pause" && $NOW >= $WAKETIME) {
+ $WANT = "off"; $WAKETIME = undef;
mumble "pause time up: stopping" if $STATE eq "on";
}
- if ($WANT eq "on" && $STATE eq "off") {
+ if ($WANT eq "on" && $STATE eq "off" &&
+ (!defined($WAKETIME) || $NOW >= $WAKETIME)) {
my $kid = fork();
if (!$kid) { exec @ARGV; }
- $STATE = "on"; $PID = $kid;
+ $STATE = "on"; $PID = $kid; $RESTARTTIME = $NOW + $CRASHTIME;
mumble "player wanted but not running: started pid $kid";
} elsif ($WANT eq "off" && $STATE eq "on") {
kill "TERM", $PID;
SEL: {
eval {
$nfd = select my $rdout = $rdin, undef, undef,
- defined($STOPTIME) ? $STOPTIME - $NOW : 60;
+ defined($WAKETIME) ? $WAKETIME - $NOW : 60;
};
if ($@ && $@->errno == EINTR) { next SEL; }
elsif ($@) { mumble "error from select: " . $@->errno; last WATCH; }
}
@lines = split /\n/, $buffer, -1;
- $buffer = pop @lines;
+ $buffer = pop(@lines) // "";
}
for my $line (@lines) {