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From "Fan Bin" <fanbi...@gmail.com>
Subject Re: [drlvm] what's the difference between the structure VM_thread and HyThread?
Date Mon, 30 Oct 2006 14:35:19 GMT
Thanks,  so you mean that there is only non threading data currently in VM_thread block, and
maybe the VM_thread block will be replaced by TLS in HyThread, right?

Bin

----- Original Message ----- 
From: "Nikolay Kuznetsov" <nikolay.kuznetsov@gmail.com>
To: <harmony-dev@incubator.apache.org>
Sent: Monday, October 30, 2006 9:13 PM
Subject: Re: [drlvm] what's the difference between the structure VM_thread and HyThread?


> Hello,
> 
> this is legacy thread structure. You're right, there was no HyThread
> at first, but VM_thread structure. Also different DRLVM modules used
> to have dedicated fields in this structure. Further it was decided to
> make threading module independent and make usage model of threading
> module the same for all other modules(i.e use thread local storage for
> module specific data). But since VM_thread structure usage was very
> heavy it was also decided to leave all non threading data in VM_thread
> and put it in TLS till better times (I mean, till this data will be
> divided into module depended parts and also put into TLS under
> different keys).
> 
> Nik.
> 
> On 10/30/06, Fan Bin <fanbin23@gmail.com> wrote:
>> Hi all,
>>
>> I'm now reading the lastest version of drlvm. Now I have a question about the thread
management module. I see that there are three kinds of control blocks: HyThread, JVMTIThread
and VM_thread. What's the difference of their rols? Especially HyThread and VM_thread. As
far as I know, there is no HyThread at first.
>>
>> Thanks,
>> Fan Bin
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