[cp-patches] AccessController improvements

[Casey Marshall]

This patch tightens up my VMAccessController implementation, in
particular it handles `doPrivileged' calls better, and allows for
recursive `doPrivileged' calls in the same Thread.

2004-08-21  Casey Marshall  <address@hidden>

        * java/security/AccessController.java
        Removed FIXME comment.
        (doPriviliged(PrivilegedAction)): push and pop a null context.
        (doPrivileged(PrivilegedExceptionAction)): likewise.
        (doPrivileged(PrivilegedAction,AccessControlContext)): only pass
        the context to `VMAccessController.pushContext'.
        (doPrivileged(PrivilegedExceptionAction,AccessControlContext)):
        likewise.
        * vm/reference/java/security/VMAccessController.java
        (contexts): use a ThreadLocal for this field.
        (pushContext): only take the context as parameter; insert it
        into a thread local stack.
        (popContext): take no arguments. Handle new form of `contexts'
        stack.
        (getContext): set `inGetContext' as early as possible.
        Include the call just prior to `doPrivileged' too.
        Handle new form of `contexts' stack.

-- 
Casey Marshall || address@hidden

vmac.patch
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