loncom/loncnew - diff

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Diff for /loncom/loncnew between versions 1.68 and 1.80

version 1.68, 2005/03/15 01:12:20	version 1.80, 2007/03/28 00:23:46
Line 74 my %perlvar = %{$perlvarref};	Line 74 my %perlvar = %{$perlvarref};
# parent and shared variables.	# parent and shared variables.

my %ChildHash; # by pid -> host.	my %ChildHash; # by pid -> host.
my %HostToPid; # By host -> pid.
my %HostHash; # by loncapaname -> IP.
my %listening_to; # Socket->host table for who the parent	my %listening_to; # Socket->host table for who the parent
# is listening to.	# is listening to.
my %parent_dispatchers; # host-> listener watcher events.	my %parent_dispatchers; # host-> listener watcher events.
Line 106 my $ConnectionCount = 0;	Line 104 my $ConnectionCount = 0;
my $IdleSeconds = 0; # Number of seconds idle.	my $IdleSeconds = 0; # Number of seconds idle.
my $Status = ""; # Current status string.	my $Status = ""; # Current status string.
my $RecentLogEntry = "";	my $RecentLogEntry = "";
my $ConnectionRetries=2; # Number of connection retries allowed.	my $ConnectionRetries=5; # Number of connection retries allowed.
my $ConnectionRetriesLeft=2; # Number of connection retries remaining.	my $ConnectionRetriesLeft=5; # Number of connection retries remaining.
my $LondVersion = "unknown"; # Version of lond we talk with.	my $LondVersion = "unknown"; # Version of lond we talk with.
my $KeyMode = ""; # e.g. ssl, local, insecure from last connect.	my $KeyMode = ""; # e.g. ssl, local, insecure from last connect.
my $LondConnecting = 0; # True when a connection is being built.	my $LondConnecting = 0; # True when a connection is being built.



my $DieWhenIdle = 1; # When true children die when trimmed -> 0.	my $hosts_tab = 0; # True if we are using a static hosts.tab
my $I_am_child = 0; # True if this is the child process.	my $I_am_child = 0; # True if this is the child process.

#	#
Line 152 sub UpdateStatus {	Line 150 sub UpdateStatus {
Makes an entry into the permanent log file.	Makes an entry into the permanent log file.

=cut	=cut

sub LogPerm {	sub LogPerm {
my $message=shift;	my $message=shift;
my $execdir=$perlvar{'lonDaemons'};	my $execdir=$perlvar{'lonDaemons'};
Line 197 sub Log {	Line 196 sub Log {
my $now = time;	my $now = time;
my $local = localtime($now);	my $local = localtime($now);
my $finalformat = "$local ($$) [$RemoteHost] [$Status] ";	my $finalformat = "$local ($$) [$RemoteHost] [$Status] ";
my $finalformat = $finalformat.$format."\n";	$finalformat = $finalformat.$format."\n";

# open the file and put the result.	# open the file and put the result.

Line 271 sub SocketDump {	Line 270 sub SocketDump {
and as what we return in a SIGUSR1	and as what we return in a SIGUSR1

=cut	=cut

sub ShowStatus {	sub ShowStatus {
my $state = shift;	my $state = shift;
my $now = time;	my $now = time;
Line 281 sub ShowStatus {	Line 281 sub ShowStatus {

=pod	=pod

=head 2 SocketTimeout	=head2 SocketTimeout

Called when an action on the socket times out. The socket is	Called when an action on the socket times out. The socket is
destroyed and any active transaction is failed.	destroyed and any active transaction is failed.


=cut	=cut

sub SocketTimeout {	sub SocketTimeout {
my $Socket = shift;	my $Socket = shift;
Log("WARNING", "A socket timeout was detected");	Log("WARNING", "A socket timeout was detected");
Line 305 sub SocketTimeout {	Line 306 sub SocketTimeout {
}	}

}	}

#	#
# This function should be called by the child in all cases where it must	# This function should be called by the child in all cases where it must
# exit. If the child process is running with the DieWhenIdle turned on	# exit. The child process must create a lock file for the AF_UNIX socket
# it must create a lock file for the AF_UNIX socket in order to prevent	# in order to prevent connection requests from lonnet in the time between
# connection requests from lonnet in the time between process exit	# process exit and the parent picking up the listen again.
# and the parent picking up the listen again.	#
# Parameters:	# Parameters:
# exit_code - Exit status value, however see the next parameter.	# exit_code - Exit status value, however see the next parameter.
# message - If this optional parameter is supplied, the exit	# message - If this optional parameter is supplied, the exit
Line 321 sub child_exit {	Line 323 sub child_exit {

# Regardless of how we exit, we may need to do the lock thing:	# Regardless of how we exit, we may need to do the lock thing:

if($DieWhenIdle) {	#
#	# Create a lock file since there will be a time window
# Create a lock file since there will be a time window	# between our exit and the parent's picking up the listen
# between our exit and the parent's picking up the listen	# during which no listens will be done on the
# during which no listens will be done on the	# lonnet client socket.
# lonnet client socket.	#
#	my $lock_file = &GetLoncSocketPath().".lock";
my $lock_file = GetLoncSocketPath().".lock";	open(LOCK,">$lock_file");
open(LOCK,">$lock_file");	print LOCK "Contents not important";
print LOCK "Contents not important";	close(LOCK);
close(LOCK);	if ($hosts_tab) {
	unlink(&GetLoncSocketPath());
exit(0);
}	}
# Now figure out how we exit:

if($message) {	if ($message) {
die $message;	die($message);
} else {	} else {
exit($exit_code);	exit($exit_code);
}	}
Line 372 sub Tick {	Line 372 sub Tick {
KillSocket($Socket);	KillSocket($Socket);
$IdleSeconds = 0; # Otherwise all connections get trimmed to fast.	$IdleSeconds = 0; # Otherwise all connections get trimmed to fast.
UpdateStatus();	UpdateStatus();
if(($ConnectionCount == 0) && $DieWhenIdle) {	if(($ConnectionCount == 0)) {
&child_exit(0);	&child_exit(0);

}	}
Line 674 sub FailTransaction {	Line 674 sub FailTransaction {

if ($ConnectionRetriesLeft > 0) {	if ($ConnectionRetriesLeft > 0) {
Log("WARNING", "Failing transaction "	Log("WARNING", "Failing transaction "
.$transaction->getRequest());	.$transaction->getLoggableRequest());
}	}
Debug(1, "Failing transaction: ".$transaction->getRequest());	Debug(1, "Failing transaction: ".$transaction->getLoggableRequest());
if (!$transaction->isDeferred()) { # If the transaction is deferred we'll get to it.	if (!$transaction->isDeferred()) { # If the transaction is deferred we'll get to it.
my $client = $transaction->getClient();	my $client = $transaction->getClient();
Debug(1," Replying con_lost to ".$transaction->getRequest());	Debug(1," Replying con_lost to ".$transaction->getRequest());
Line 686 sub FailTransaction {	Line 686 sub FailTransaction {
}	}

=pod	=pod

=head1 EmptyQueue	=head1 EmptyQueue

Fails all items in the work queue with con_lost.	Fails all items in the work queue with con_lost.
Note that each item in the work queue is a transaction.	Note that each item in the work queue is a transaction.

=cut	=cut

sub EmptyQueue {	sub EmptyQueue {
$ConnectionRetriesLeft--; # Counts as connection failure too.	$ConnectionRetriesLeft--; # Counts as connection failure too.
while($WorkQueue->Count()) {	while($WorkQueue->Count()) {
Line 707 sub EmptyQueue {	Line 709 sub EmptyQueue {
Close all connections open on lond prior to exit e.g.	Close all connections open on lond prior to exit e.g.

=cut	=cut

sub CloseAllLondConnections {	sub CloseAllLondConnections {
foreach my $Socket (keys %ActiveConnections) {	foreach my $Socket (keys %ActiveConnections) {
if(exists($ActiveTransactions{$Socket})) {	if(exists($ActiveTransactions{$Socket})) {
Line 715 sub CloseAllLondConnections {	Line 718 sub CloseAllLondConnections {
KillSocket($Socket);	KillSocket($Socket);
}	}
}	}
=cut

=pod	=pod

Line 737 Parameters:	Line 739 Parameters:

nonzero if we are allowed to create a new connection.	nonzero if we are allowed to create a new connection.


=cut	=cut

sub KillSocket {	sub KillSocket {
my $Socket = shift;	my $Socket = shift;

Line 950 sub LondReadable {	Line 952 sub LondReadable {
# We need to be writable for this and probably don't belong	# We need to be writable for this and probably don't belong
# here inthe first place.	# here inthe first place.

Deubg(6, "SendingRequest state encountered in readable");	Debug(6, "SendingRequest state encountered in readable");
$Watcher->poll("w");	$Watcher->poll("w");
$Watcher->cb(\&LondWritable);	$Watcher->cb(\&LondWritable);

Line 1151 sub LondWritable {	Line 1153 sub LondWritable {
=pod	=pod

=cut	=cut

sub QueueDelayed {	sub QueueDelayed {
Debug(3,"QueueDelayed called");	Debug(3,"QueueDelayed called");

Line 1158 sub QueueDelayed {	Line 1161 sub QueueDelayed {

Debug(4, "Delayed path: ".$path);	Debug(4, "Delayed path: ".$path);
opendir(DIRHANDLE, $path);	opendir(DIRHANDLE, $path);

my @alldelayed = grep /\.$RemoteHost$/, readdir DIRHANDLE;	my @all_host_ids;
	my $host_iterator = &LondConnection::GetHostIterator();
	while (!$host_iterator->end()) {
	my ($host_id,$host_name) = @{$host_iterator->get()}[0,3];
	if ($host_name eq $RemoteHost) {
	push(@all_host_ids, $host_id);
	}
	$host_iterator->next();
	}
	my $host_id_re = '(?:'.join('\|',@all_host_ids).')';
	my @alldelayed = grep(/\.$host_id_re$/, readdir(DIRHANDLE));
closedir(DIRHANDLE);	closedir(DIRHANDLE);
my $dfname;	foreach my $dfname (sort(@alldelayed)) {
my $reqfile;	my $reqfile = "$path/$dfname";
foreach $dfname (sort @alldelayed) {	my ($host_id) = ($dfname =~ /\.([^.]*)$/);
$reqfile = "$path/$dfname";	Debug(4, "queueing ".$reqfile." for $host_id");
Debug(4, "queueing ".$reqfile);
my $Handle = IO::File->new($reqfile);	my $Handle = IO::File->new($reqfile);
my $cmd = <$Handle>;	my $cmd = <$Handle>;
chomp $cmd; # There may or may not be a newline...	chomp $cmd; # There may or may not be a newline...
$cmd = $cmd."\n"; # now for sure there's exactly one newline.	$cmd = $cmd."\n"; # now for sure there's exactly one newline.
my $Transaction = LondTransaction->new($cmd);	my $Transaction = LondTransaction->new("sethost:$host_id:$cmd");
$Transaction->SetDeferred($reqfile);	$Transaction->SetDeferred($reqfile);
QueueTransaction($Transaction);	QueueTransaction($Transaction);
}	}
Line 1395 sub ClientRequest {	Line 1407 sub ClientRequest {
# Accept a connection request for a client (lonc child) and	# Accept a connection request for a client (lonc child) and
# start up an event watcher to keep an eye on input from that	# start up an event watcher to keep an eye on input from that
# Event. This can be called both from NewClient and from	# Event. This can be called both from NewClient and from
# ChildProcess if we are started in DieWhenIdle mode.	# ChildProcess.
# Parameters:	# Parameters:
# $socket - The listener socket.	# $socket - The listener socket.
# Returns:	# Returns:
Line 1511 another event handler to subess requests	Line 1523 another event handler to subess requests
=cut	=cut

sub SetupLoncListener {	sub SetupLoncListener {
	my ($host,$SocketName) = @_;
	if (!$host) { $host = &GetServerHost(); }
	if (!$SocketName) { $SocketName = &GetLoncSocketPath($host); }

my $host = GetServerHost(); # Default host.
if (@_) {
($host) = @_ # Override host with parameter.
}

my $socket;
my $SocketName = GetLoncSocketPath($host);
unlink($SocketName);	unlink($SocketName);

	my $socket;
unless ($socket =IO::Socket::UNIX->new(Local => $SocketName,	unless ($socket =IO::Socket::UNIX->new(Local => $SocketName,
Listen => 250,	Listen => 250,
Type => SOCK_STREAM)) {	Type => SOCK_STREAM)) {
Line 1559 into the status file.	Line 1570 into the status file.

We also use this to reset the retries count in order to allow the	We also use this to reset the retries count in order to allow the
client to retry connections with a previously dead server.	client to retry connections with a previously dead server.

=cut	=cut

sub ChildStatus {	sub ChildStatus {
Line 1591 sub ChildStatus {	Line 1603 sub ChildStatus {
flock(LOG,LOCK_UN);	flock(LOG,LOCK_UN);
close(LOG);	close(LOG);
$ConnectionRetriesLeft = $ConnectionRetries;	$ConnectionRetriesLeft = $ConnectionRetries;
	UpdateStatus();
}	}

=pod	=pod
Line 1617 sub SignalledToDeath {	Line 1630 sub SignalledToDeath {

}	}

	=pod

=head2 ToggleDebug	=head2 ToggleDebug

This sub toggles trace debugging on and off.	This sub toggles trace debugging on and off.
Line 1632 sub ToggleDebug {	Line 1647 sub ToggleDebug {

}	}

	=pod

=head2 ChildProcess	=head2 ChildProcess

This sub implements a child process for a single lonc daemon.	This sub implements a child process for a single lonc daemon.
Line 1642 Optional parameter:	Line 1659 Optional parameter:
=cut	=cut

sub ChildProcess {	sub ChildProcess {
# If we are in DieWhenIdle mode, we've inherited all the	# We've inherited all the
# events of our parent and those have to be cancelled or else	# events of our parent and those have to be cancelled or else
# all holy bloody chaos will result.. trust me, I already made	# all holy bloody chaos will result.. trust me, I already made
# >that< mistake.	# >that< mistake.
Line 1710 sub ChildProcess {	Line 1727 sub ChildProcess {
desc => 'Lonc Listener Unix Socket',	desc => 'Lonc Listener Unix Socket',
fd => $socket);	fd => $socket);

$Event::Debuglevel = $DebugLevel;	$Event::DebugLevel = $DebugLevel;

Debug(9, "Making initial lond connection for ".$RemoteHost);	Debug(9, "Making initial lond connection for ".$RemoteHost);

Line 1718 sub ChildProcess {	Line 1735 sub ChildProcess {

# &MakeLondConnection(); // let first work request do it.	# &MakeLondConnection(); // let first work request do it.

# If We are in diwhenidle, need to accept the connection since the	# need to accept the connection since the event may not fire.
# event may not fire.

if ($DieWhenIdle) {	&accept_client($socket);
&accept_client($socket);
}

Debug(9,"Entering event loop");	Debug(9,"Entering event loop");
my $ret = Event::loop(); # Start the main event loop.	my $ret = Event::loop(); # Start the main event loop.
Line 1745 sub CreateChild {	Line 1759 sub CreateChild {
if($pid) { # Parent	if($pid) { # Parent
$RemoteHost = "Parent";	$RemoteHost = "Parent";
$ChildHash{$pid} = $host;	$ChildHash{$pid} = $host;
$HostToPid{$host}= $pid;
sigprocmask(SIG_UNBLOCK, $sigset);	sigprocmask(SIG_UNBLOCK, $sigset);

} else { # child.	} else { # child.
Line 1784 sub parent_client_connection {	Line 1797 sub parent_client_connection {
my ($event) = @_;	my ($event) = @_;
my $watcher = $event->w;	my $watcher = $event->w;
my $socket = $watcher->fd;	my $socket = $watcher->fd;
	if ($hosts_tab) {

# Lookup the host associated with this socket:	# Lookup the host associated with this socket:

my $host = $listening_to{$socket};	my $host = $listening_to{$socket};

# Start the child:	# Start the child:



	&Debug(9,"Creating child for $host (parent_client_connection)");
	&CreateChild($host, $socket);

	# Clean up the listen since now the child takes over until it exits.

	$watcher->cancel(); # Nolonger listening to this event
	delete($listening_to{$socket});
	delete($parent_dispatchers{$host});
	$socket->close();

	} else {
	my $connection = $socket->accept(); # Accept the client connection.
	Event->io(cb => \&get_remote_hostname,
	poll => 'r',
	data => "",
	fd => $connection);
	}
	}
	}

	sub get_remote_hostname {
	my ($event) = @_;
	my $watcher = $event->w;
	my $socket = $watcher->fd;

	my $thisread;
	my $rv = $socket->recv($thisread, POSIX::BUFSIZ, 0);
	Debug(8, "rcv: data length = ".length($thisread)." read =".$thisread);
	if (!defined($rv) \|\| length($thisread) == 0) {
	# Likely eof on socket.
	Debug(5,"Client Socket closed on lonc for p_c_c");
	close($socket);
	$watcher->cancel();
	return;
	}

	my $data = $watcher->data().$thisread;
	$watcher->data($data);
	if($data =~ /\n$/) { # Request entirely read.
	chomp($data);
	} else {
	return;
	}

&Debug(9,"Creating child for $host (parent_client_connection)");	&Debug(5,"Creating child for $data (parent_client_connection)");
&CreateChild($host, $socket);	&CreateChild($data);

# Clean up the listen since now the child takes over until it exits.	# Clean up the listen since now the child takes over until it exits.

$watcher->cancel(); # Nolonger listening to this event	$watcher->cancel(); # Nolonger listening to this event
delete($listening_to{$socket});	$socket->send("done\n");
delete($parent_dispatchers{$host});
$socket->close();	$socket->close();
}
}	}

# parent_listen:	# parent_listen:
Line 1824 sub parent_listen {	Line 1879 sub parent_listen {
my ($loncapa_host) = @_;	my ($loncapa_host) = @_;
Debug(5, "parent_listen: $loncapa_host");	Debug(5, "parent_listen: $loncapa_host");

my $socket = &SetupLoncListener($loncapa_host);	my ($socket,$file);
	if (!$loncapa_host) {
	$loncapa_host = 'common_parent';
	$file = $perlvar{'lonSockCreate'};
	} else {
	$file = &GetLoncSocketPath($loncapa_host);
	}
	$socket = &SetupLoncListener($loncapa_host,$file);

$listening_to{$socket} = $loncapa_host;	$listening_to{$socket} = $loncapa_host;
if (!$socket) {	if (!$socket) {
die "Unable to create a listen socket for $loncapa_host";	die "Unable to create a listen socket for $loncapa_host";
}	}

my $lock_file = &GetLoncSocketPath($loncapa_host).".lock";	my $lock_file = $file.".lock";
unlink($lock_file); # No problem if it doesn't exist yet [startup e.g.]	unlink($lock_file); # No problem if it doesn't exist yet [startup e.g.]

my $watcher = Event->io(cb => \&parent_client_connection,	my $watcher =
poll => 'r',	Event->io(cb => \&parent_client_connection,
desc => "Parent listener unix socket ($loncapa_host)",	poll => 'r',
fd => $socket);	desc => "Parent listener unix socket ($loncapa_host)",
	data => "",
	fd => $socket);
$parent_dispatchers{$loncapa_host} = $watcher;	$parent_dispatchers{$loncapa_host} = $watcher;

}	}

	sub parent_clean_up {
	my ($loncapa_host) = @_;
	Debug(5, "parent_clean_up: $loncapa_host");

	my $socket_file = &GetLoncSocketPath($loncapa_host);
	unlink($socket_file); # No problem if it doesn't exist yet [startup e.g.]
	my $lock_file = $socket_file.".lock";
	unlink($lock_file); # No problem if it doesn't exist yet [startup e.g.]
	}


# listen_on_all_unix_sockets:	# listen_on_all_unix_sockets:
# This sub initiates a listen on all unix domain lonc client sockets.	# This sub initiates a listen on all unix domain lonc client sockets.
Line 1863 sub listen_on_all_unix_sockets {	Line 1938 sub listen_on_all_unix_sockets {
my $host_iterator = &LondConnection::GetHostIterator();	my $host_iterator = &LondConnection::GetHostIterator();
while (!$host_iterator->end()) {	while (!$host_iterator->end()) {
my $host_entry_ref = $host_iterator->get();	my $host_entry_ref = $host_iterator->get();
my $host_name = $host_entry_ref->[0];	my $host_name = $host_entry_ref->[3];
Debug(9, "Listen for $host_name");	Debug(9, "Listen for $host_name");
&parent_listen($host_name);	&parent_listen($host_name);
$host_iterator->next();	$host_iterator->next();
}	}
}	}

	sub listen_on_common_socket {
	Debug(5, "listen_on_common_socket");
	&parent_listen();
	}

# server_died is called whenever a child process exits.	# server_died is called whenever a child process exits.
# Since this is dispatched via a signal, we must process all	# Since this is dispatched via a signal, we must process all
# dead children until there are no more left. The action	# dead children until there are no more left. The action
Line 1893 sub server_died {	Line 1973 sub server_died {
if($host) { # It's for real...	if($host) { # It's for real...
&Debug(9, "Caught sigchild for $host");	&Debug(9, "Caught sigchild for $host");
delete($ChildHash{$pid});	delete($ChildHash{$pid});
delete($HostToPid{$host});	if ($hosts_tab) {
&parent_listen($host);	&parent_listen($host);
	} else {
	&parent_clean_up($host);
	}

} else {	} else {
&Debug(5, "Caught sigchild for pid not in hosts hash: $pid");	&Debug(5, "Caught sigchild for pid not in hosts hash: $pid");
}	}
Line 1951 ShowStatus("Forking node servers");	Line 2034 ShowStatus("Forking node servers");
Log("CRITICAL", "--------------- Starting children ---------------");	Log("CRITICAL", "--------------- Starting children ---------------");

LondConnection::ReadConfig; # Read standard config files.	LondConnection::ReadConfig; # Read standard config files.
my $HostIterator = LondConnection::GetHostIterator;

if ($DieWhenIdle) {	$RemoteHost = "[parent]";
$RemoteHost = "[parent]";	if ($hosts_tab) {
&listen_on_all_unix_sockets();	&listen_on_all_unix_sockets();
} else {	} else {
	&listen_on_common_socket();
while (! $HostIterator->end()) {

my $hostentryref = $HostIterator->get();
CreateChild($hostentryref->[0]);
$HostHash{$hostentryref->[0]} = $hostentryref->[4];
$HostIterator->next();
}
}	}

$RemoteHost = "Parent Server";	$RemoteHost = "Parent Server";
Line 1974 $RemoteHost = "Parent Server";	Line 2049 $RemoteHost = "Parent Server";
ShowStatus("Parent keeping the flock");	ShowStatus("Parent keeping the flock");


if ($DieWhenIdle) {	# We need to setup a SIGChild event to handle the exit (natural or otherwise)
# We need to setup a SIGChild event to handle the exit (natural or otherwise)	# of the children.
# of the children.
	Event->signal(cb => \&server_died,
Event->signal(cb => \&server_died,	desc => "Child exit handler",
desc => "Child exit handler",	signal => "CHLD");
signal => "CHLD");

	# Set up all the other signals we set up.
# Set up all the other signals we set up. We'll vector them off to the
# same subs as we would for DieWhenIdle false and, if necessary, conditionalize	$parent_handlers{INT} = Event->signal(cb => \&Terminate,
# the code there.	desc => "Parent INT handler",
	signal => "INT");
$parent_handlers{INT} = Event->signal(cb => \&Terminate,	$parent_handlers{TERM} = Event->signal(cb => \&Terminate,
desc => "Parent INT handler",	desc => "Parent TERM handler",
signal => "INT");	signal => "TERM");
$parent_handlers{TERM} = Event->signal(cb => \&Terminate,	if ($hosts_tab) {
desc => "Parent TERM handler",
signal => "TERM");
$parent_handlers{HUP} = Event->signal(cb => \&Restart,	$parent_handlers{HUP} = Event->signal(cb => \&Restart,
desc => "Parent HUP handler.",	desc => "Parent HUP handler.",
signal => "HUP");	signal => "HUP");
$parent_handlers{USR1} = Event->signal(cb => \&CheckKids,
desc => "Parent USR1 handler",
signal => "USR1");
$parent_handlers{USR2} = Event->signal(cb => \&UpdateKids,
desc => "Parent USR2 handler.",
signal => "USR2");

# Start procdesing events.

$Event::DebugLevel = $DebugLevel;
Debug(9, "Parent entering event loop");
my $ret = Event::loop();
die "Main Event loop exited: $ret";


} else {	} else {
#	$parent_handlers{HUP} = Event->signal(cb => \&KillThemAll,
# Set up parent signals:	desc => "Parent HUP handler.",
#	signal => "HUP");

$SIG{INT} = \&Terminate;
$SIG{TERM} = \&Terminate;
$SIG{HUP} = \&Restart;
$SIG{USR1} = \&CheckKids;
$SIG{USR2} = \&UpdateKids; # LonManage update request.

while(1) {
my $deadchild = wait();
if(exists $ChildHash{$deadchild}) { # need to restart.
my $deadhost = $ChildHash{$deadchild};
delete($HostToPid{$deadhost});
delete($ChildHash{$deadchild});
Log("WARNING","Lost child pid= ".$deadchild.
"Connected to host ".$deadhost);
Log("INFO", "Restarting child procesing ".$deadhost);
CreateChild($deadhost);
}
}
}	}
	$parent_handlers{USR1} = Event->signal(cb => \&CheckKids,
	desc => "Parent USR1 handler",
	signal => "USR1");
	$parent_handlers{USR2} = Event->signal(cb => \&UpdateKids,
	desc => "Parent USR2 handler.",
	signal => "USR2");

	# Start procdesing events.

	$Event::DebugLevel = $DebugLevel;
	Debug(9, "Parent entering event loop");
	my $ret = Event::loop();
	die "Main Event loop exited: $ret";

=pod	=pod

Line 2103 sub UpdateKids {	Line 2154 sub UpdateKids {
# The down side is transactions that are in flight will get timed out	# The down side is transactions that are in flight will get timed out
# (lost unless they are critical).	# (lost unless they are critical).

&Restart();	if ($hosts_tab) {
	&Restart();
	} else {
	&KillThemAll();
	}
}	}


Line 2144 sub KillThemAll {	Line 2198 sub KillThemAll {
Log("CRITICAL", "Nicely Killing lonc for $serving pid = $pid");	Log("CRITICAL", "Nicely Killing lonc for $serving pid = $pid");
kill 'QUIT' => $pid;	kill 'QUIT' => $pid;
}	}


}	}


Line 2167 sub really_kill_them_all_dammit	Line 2219 sub really_kill_them_all_dammit
unlink("$execdir/logs/lonc.pid");	unlink("$execdir/logs/lonc.pid");
}	}
}	}

=pod	=pod

=head1 Terminate	=head1 Terminate

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.68
changed lines
	Added in v.1.80