什么是热点?

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问题描述

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我刚刚听说过 HotSpot JVM，而不是 Oracle JRockik JVM.什么是热点?这是旧的 Sun JVM 还是其他东西?

I just heard of the HotSpot JVM, as opposed to the Oracle JRockik JVM. What is Hotspot? Is this old the Sun JVM, or something else?

推荐答案

HotSpot 是随附的 Sun JVM，它支持即时编译大量使用的代码段.

HotSpot is the shipped Sun JVM which has support for just-in-time compilation of heavily used sections of code.

出于所有实际目的，它是Sun JVM"或现在的Oracle JVM".请注意，这是开源的同一个 JVM，因此它也是OpenJDK JVM".

For all practical purposes, it is the "Sun JVM" or now the "Oracle JVM". Note that this is the same JVM which was open sourced, so it is also the "OpenJDK JVM".

回到过去，Sun 确实发布了一个不支持 JIT 的 JVM，但那是很久以前的事了，遇到它的几率微乎其微.

Way back when, Sun did release a non-JIT capable JVM, but that's long enough ago that the odds of encountering it are minuscule.

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