在运行时查看Java堆内容 [英] See the java heap content in run time

问题描述

我正在寻找能让我看到在运行时如何在堆上创建对象的任何工具. 我使用的是VisualVM-Profiles，但无法找到何时创建特定类型的变量(我正在寻找的变量).也许我做错了... 我也将很高兴收到任何提示，提示如何使用任何API获取此类信息.

I am looking for any tool that allows me to see how objects are created on heap in run time. I was using VisualVM - Profiles but was not able to find when a variable of specific type (the one I am looking for) is being created. Maybe I do something wrong... I will be also thankful getting any hint how to get such information using any API.

关于， 马辛

推荐答案

通常，探查器(例如分配记录已解释截屏.

Typically, profilers (such as JProfiler) will allow you to see this - see for example the Allocation recording explained screencast.

但是，他们通过将代理程序附加到JVM来实现这一目标，该代理程序允许他们拦截低级操作-用户或Java程序通常都无法使用此信息.这样，您将无法通过JConsole或JVisualVM之类的JMX应用程序查看堆.

However, they achieve this by attaching an agent to the JVM that allows them to intercept the low-level operations - this information is not usually available to either users or Java programs. As such, you won't be able to see the heap via JMX apps such as JConsole or JVisualVM.

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