调度程序仍在执行

Question

所以我和我的团队遇到了一个问题，我们认为调度程序没有正确处理。我们这里有一段代码取消了ScheduleFuture，然后创建了一个新代码。

    public void restartEventTimer(long time) {
    try {
        if (disposed) {
            return;
        }
        timeStarted = System.currentTimeMillis();
        eventTime = time;
        if (timeout != null) {
            timeout.cancel(false);
        }
        timeout = null;
        final int timesend = (int) time / 1000;

        for (MapleCharacter chr : getPlayers()) {
            chr.getClient().getSession().write(MaplePacketCreator.getClock(timesend));
        }
        timeOut(time);

    } catch (Exception ex) {
        LogHelper.INVOCABLE.get().info("restartEventTimer: Event name " + em.getName() + ", Instance name : " + name + " ", ex);
    }
}

现在我的理解是，cancel不会处理计时器，而是在后端设置一个值isDone（）设置为true。我想知道是否因为ScheduledThreadPoolExecutor没有运行代码来处理在后端修剪它。我应该为ScheduleFuture创建一个包装器并覆盖默认实现，以确保调用isDone（），它不会通过Runnable运行。

    public boolean timeOut(final long delay) {
    if (disposed || em == null) {
        return false;
    }

    try {
        timeout = TimerManager.getInstance().schedule(() -> {
            if (disposed || em == null) {
                return;
            }
            try {
                em.getIv().invokeFunction("scheduledTimeOut", this);
            } catch (Exception e) { //i know, it should be just NoSuchMethodException, but idc.
                 LogHelper.INVOCABLE.get().info("timeOut: Event name " + em.getName() + ", Instance name : " + name + " " + e);
            }
        }, delay);
    } catch (NullPointerException e) {
        // Null pointer arises when you dispose in the scheduledTimeOut method, thus making this particular event instance object null and making timeout throw a nullpointer
    } catch (Exception e) {
        LogHelper.INVOCABLE.get().info("timeOut: Event name " + em.getName() + ", Instance name : " + name + " " + e);
    }
    return true;
}

我们还确保将这些参数设置为执行者：

    setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
    setRemoveOnCancelPolicy(true);
    setKeepAliveTime(15, TimeUnit.MINUTES);