[RFA/JDWP] Implement several JDWP callbacks

[Keith Seitz]

Keith Seitz wrote:

>> Is there a way we can define jthread == Thread* for internal purposes,
>> so we can get rid of these casts?
> 
> Yeah, we can define _CLASSPATH_VM_JVMTI_TYPES_DEFINED and then redefine 
> the jthread, jthreadGroup, jlocation, and jrawMonitorID any way we like.
> 
> I'll work on a patch.

How about the attached? Makes life much simpler...

Keith

ChangeLog

2007-01-27  Keith Seitz  <keiths@redhat.com>

         * include/jvmti_md.h (_CLASSPATH_VM_JVMTI_TYPES_DEFINED):
         Define.
         [__GCJ_JNI_IMPL__]: Define our own JVMTI types when building
         gcj. All jvmti object types now are defined to be their
         corresponding java classes.
         * jvmti.cc (_Jv_JVMTI_SuspendThread): Remove casting from
         jthread to Thread*.
         (_Jv_JVMTI_ResumeThread): Likewise.
         (_Jv_JVMTI_InterruptThread): Likewise.
         (_Jv_JVMTI_SetEventNotificationMode): Likewise.
         * gnu/classpath/jdwp/natVMVirtualMachine.cc
         (jdwpClassPrepareCB): Likewise.
         (jdwpThreadEndCB): Likewise.
         (jdwpThreadStartCB): Likewise.
         (jdwpVMInitCB): Likewise.
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