/**
* Initializes the instance if it is not already initialized.
*
* @param ctx
* @param request
* @throws java.io.IOException
*/
public static void initIfNotInited(ServletContext ctx, HttpServletRequest request)
throws IOException {
if (INITIALIZED.compareAndSet(false, true)) {
try {
instance = new Engine();
instance.init(ctx, request);
} catch (IOException e) {
INITIALIZED.set(false);
throw e;
} catch (Throwable t) {
INITIALIZED.set(false);
throw new IOException(t.getMessage(), t);
}
}
}
/** Terminates the instance. */
public static void destroy() {
if (INITIALIZED.compareAndSet(true, false)) instance.terminate();
}