import org.hsqldb.lib.HsqlTimer; //导入依赖的package包/类
/**
 * Schedules the lock heartbeat task.
 */
private final void startHeartbeat() {

    if (timerTask == null || HsqlTimer.isCancelled(timerTask)) {
        Runnable runner = new HeartbeatRunner();

        timerTask = timer.schedulePeriodicallyAfter(0, HEARTBEAT_INTERVAL,
                runner, true);
    }
}
 

import org.hsqldb.lib.HsqlTimer; //导入依赖的package包/类
/**
 * Cancels the lock heartbeat task.
 */
private final void stopHeartbeat() {

    if (timerTask != null && !HsqlTimer.isCancelled(timerTask)) {
        HsqlTimer.cancel(timerTask);

        timerTask = null;
    }
}
 

import org.hsqldb.lib.HsqlTimer; //导入依赖的package包/类
public void stop() {

            synchronized (this) {
                if (timerTask == null) {
                    return;
                }

                HsqlTimer.cancel(timerTask);
                sessionList.clear();

                timerTask   = null;
                sessionList = null;
            }
        }
 

import org.hsqldb.lib.HsqlTimer; //导入依赖的package包/类
public void stop() {

        if (timerTask != null) {
            HsqlTimer.cancel(timerTask);

            timerTask = null;
        }
    }
 

import org.hsqldb.lib.HsqlTimer; //导入依赖的package包/类
/**
 *  Method declaration
 */
void stop() {

    if (timerTask != null) {
        HsqlTimer.cancel(timerTask);

        timerTask = null;
    }
}
 

import org.hsqldb.lib.HsqlTimer; //导入依赖的package包/类
public static HsqlTimer getTimer() {
    return timer;
}
 

import org.hsqldb.lib.HsqlTimer; //导入依赖的package包/类
/** Schedules the lock heartbeat task. */
private void startHeartbeat() {

    Runnable r;

    trace("startHeartbeat(): entered.");

    if (timerTask == null || HsqlTimer.isCancelled(timerTask)) {
        r = new HeartbeatRunner();

        // now, periodic at HEARTBEAT_INTERVAL, running this, fixed rate
        timerTask = timer.schedulePeriodicallyAfter(0,
                HEARTBEAT_INTERVAL, r, true);

        trace("startHeartbeat(): heartbeat task scheduled.");
    }

    trace("startHeartbeat(): exited.");
}