问题描述
运行Java 1.6（1.6.0_03-b05）应用程序时，我添加了 -XX：+ PrintCompilation 标志。在某些方法的输出中，特别是我知道的一些方法被调用了很多，我看到文本没有进入和制作了僵尸。
When running a Java 1.6 (1.6.0_03-b05) app I've added the -XX:+PrintCompilation flag. On the output for some methods, in particular some of those that I know are getting called a lot, I see the text made not entrant and made zombie.
这是什么意思？最好的猜测是，在重新编译该方法或具有更高优化的依赖项之前，它是一个反编译步骤。真的吗？为什么僵尸和参赛者？
What do these mean? Best guess is that it's a decompilation step before recompiling either that method or a dependency with greater optimisation. Is that true? Why "zombie" and "entrant"?
示例，其中一些行之间有相当长的时间：
Example, with quite a bit of time between some of these lines:
[... near the beginning]
42 jsr166y.LinkedTransferQueue::xfer (294 bytes)
[... much later]
42 made not entrant jsr166y.LinkedTransferQueue::xfer (294 bytes)
--- n sun.misc.Unsafe::compareAndSwapObject
170 jsr166y.LinkedTransferQueue::xfer (294 bytes)
170 made not entrant jsr166y.LinkedTransferQueue::xfer (294 bytes)
4% jsr166y.LinkedTransferQueue::xfer @ 29 (294 bytes)
171 jsr166y.LinkedTransferQueue::xfer (294 bytes)
[... even later]
42 made zombie jsr166y.LinkedTransferQueue::xfer (294 bytes)
170 made zombie jsr166y.LinkedTransferQueue::xfer (294 bytes)
171 made not entrant jsr166y.LinkedTransferQueue::xfer (294 bytes)
172 jsr166y.LinkedTransferQueue::xfer (294 bytes)
[... no further logs]
推荐答案
我在。我发现Cliff Click评论说：
I've pulled together some info on this on my blog. A Cliff Click comment I found says:
这篇关于java PrintCompilation输出：“make not entrant”的含义是什么？和“制作僵尸”的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！