在哪里可以找到java.lang本机方法的源代码？ [英] Where to find source code for java.lang native methods?

问题描述

我模糊地熟悉 JNI ，我很想看到我的机器 - java.lang包中某些本机方法的特定实现。 Thread＃currentThread（），例如。

I'm vaguely familiar with the JNI, and I'm curious to see my machine-specific implementation for some native methods in the java.lang package. Thread#currentThread(), for example.

我在[JDK_HOME] /中发现了一堆DLL jre / bin，但就像我说我正在尝试查找源代码。

I've found a bunch of DLLs in [JDK_HOME]/jre/bin, but like I said I'm trying to find the source code.

有谁知道可以找到原生源代码的位置？它是否可用，或者它是否被Sun分类（oops我的意思是我们在其中赢得它Oracle）？

Does anyone know where the native source code can be found? Is it even available, or is it classified by Sun (oops I mean "We're In It To Win It" Oracle)?

推荐答案

对于JDK6，您可以从 java.net 下载源代码。对于 java.lang ，故事从 j2se / src / share / native / java / lang / 开始，然后搜索... JDK7稍微重新排列目录结构。

For JDK6 you can download the source from java.net. For java.lang the story begins at j2se/src/share/native/java/lang/, and then search... JDK7 rearranges the directory structure a little.

某些方法，例如 Object.hashCode ，可能是通过热点实现，或者通过JNI / Java实现。

Some methods, such as Object.hashCode, may be implemented by hotspot instead or in addition to through JNI/Java.

JDK6通过Java研究许可证（JRL）和Java内部使用许可证（JIUL）免费许可。 JDK7和OpenJDK6在GPL 2下获得CLASSPATH异常许可（粗略地说，您可以链接到它而不会捕获GNU病毒）。我不是律师。

JDK6 is freely licensed through the Java Research License (JRL) and Java Internal Use License (JIUL). JDK7 and OpenJDK6 is licensed under GPL 2 with CLASSPATH exception (roughly speaking you can link to it without catching the GNU virus). I am not a lawyer.

（ BTW：真正的律师想指出我仍然是Sun Microsystems的员工。 Sun英国已不复存在。它现在是 Oracle。）

(BTW: The real lawyers would like to point out that I am still an employee of Sun Microsystems. Sun UK is no more. It is now Oracle.)

更新（为Thread.c添加位置）：
http：// hg。 openjdk.java.net/jdk7/jdk7/jdk/file/9b8c96f96a0f/src/share/native/java/lang/Thread.c

Update (Adding location for Thread.c): http://hg.openjdk.java.net/jdk7/jdk7/jdk/file/9b8c96f96a0f/src/share/native/java/lang/Thread.c

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