private boolean trashConnection(Connection connection) {
// First, make sure we don't go below core connections
for (; ; ) {
int opened = open.get();
if (opened <= options().getCoreConnectionsPerHost(hostDistance)) return false;
if (open.compareAndSet(opened, opened - 1)) break;
}
trash.add(connection);
connections.remove(connection);
if (connection.inFlight.get() == 0 && trash.remove(connection)) close(connection);
return true;
}
public void returnConnection(Connection connection) {
int inFlight = connection.inFlight.decrementAndGet();
if (connection.isDefunct()) {
if (host.getMonitor().signalConnectionFailure(connection.lastException())) shutdown();
else replace(connection);
} else {
if (trash.contains(connection) && inFlight == 0) {
if (trash.remove(connection)) close(connection);
return;
}
if (connections.size() > options().getCoreConnectionsPerHost(hostDistance)
&& inFlight <= options().getMinSimultaneousRequestsPerConnectionThreshold(hostDistance)) {
trashConnection(connection);
} else {
signalAvailableConnection();
}
}
}
