[cp-patches] RFC: Different ThreadLocal implementation

[Jeroen Frijters]

Hi,

I'd like to propose a different way to implement ThreadLocal. The patch
is attached. It trades using WeakHashMaps for one additional field in
Thread, which I think is a good trade. It is also completely lock free.

Note that it also fixes a bug in InheritableThreadLocal:
-                local.valueMap.put(childThread, (childValue == null
-                                                 ? NULL :
parentValue));

Any comments?

Regards,
Jeroen
2005-02-17  Jeroen Frijters  <address@hidden>

        * java/lang/InheritableThreadLocal.java
        (threadMap): Removed.
        (InheritableThreadLocal): Removed code.
        (newChildThread): Changed to use locals map in Thread.
        * java/lang/Thread.java
        (locals): New field.
        (die): Clear locals field.
        (getThreadLocals): New method.
        * java/lang/ThreadLocal.java
        (value): Removed.
        (valueMap): Removed.
        (get,set): Changed to use locals map in Thread.

ThreadLocal.patch.txt
Description: ThreadLocal.patch.txt