org.hyperic.sigar.cmd.EventLogTail Maven / Gradle / Ivy

/*
 * Copyright (c) 2007, 2009 Hyperic, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.hyperic.sigar.cmd;

import org.hyperic.sigar.win32.EventLog;
import org.hyperic.sigar.win32.EventLogNotification;
import org.hyperic.sigar.win32.EventLogRecord;
import org.hyperic.sigar.win32.EventLogThread;
import org.hyperic.sigar.win32.Win32Exception;

public class EventLogTail {

    private static void tail(String name, Tail tail) throws Win32Exception {
        EventLog log = new EventLog();
        log.open(name);
        int max = log.getNumberOfRecords();
        if (tail.number < max) {
            max = tail.number;
        }
        int last = log.getNewestRecord()+1;
        int first = last - max;

        for (int i=first; i