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jvmjavajvm-hotspot

Where are the native methods of sun.misc.Unsafe implemented?

I've been reading through the sun.misc.Unsafe class (openjdk6) as I was curious how many native methods it actually referred to. Understandably there are a large number of native methods in the class, however I cannot seem to find where they are implemented.

I've grep'd through the openjdk6 repo and, while I can find implementations of other class's native methods, I cannot find Unsafe's. I'm guessing they are not openjdk code but instead are compiled as part of hotspot?

Am I looking in the wrong place within openjdk or are they indeed implemented in hotspot? References to their location would be greatly appreciated.

Solution

  • The Openjdk versions can be found here:

    http://hg.openjdk.java.net/jdk6/jdk6/hotspot/file/4fc084dac61e/src/share/vm/prims/unsafe.cpp

    http://hg.openjdk.java.net/jdk7/jdk7/hotspot/file/4fc084dac61e/src/share/vm/prims/unsafe.cpp

    EDIT:

    As pointed out by the8472 these are the native implementations used in interpreter mode. Most of them have intrinsic implementations in hotspot. This header file lists the intrinsic ones (search for "sun_misc_Unsafe").