Implementing multithreading policy templates in D?

[downs]

Brian Price wrote:
> downs Wrote:
> 
>> Brian Price wrote:
>>> Greetings,
>>>
>>> While implementing a design I ran into a need for multiple implementations with different threading policies.  It looked to me as if porting Loki's Threading Model policies over to D would be just the ticket.  Unfortunately there's no mutex-like class in Phobos that I can find and Object's monitor is not exposed so no way to acquire/release on it other than through synchronized.  
>>>
> <<---- snip ---- >>
>>> Having used about every 'mainstream' language over the past twenty odd years, I figure either I'm missing something huge and need to learn an entirely new approach or there's something missing from the standard library.  So I'm left with three questions:
>>>
>>> Did I miss something in the docs/std lib code?
>>>
>>> Is there a way to implement flexible threading policies using synchronized statements?
>>>
>>> What are the chances we'll see Object sporting wait/notify methods or lock/unlock methods in a future release?
>>>
>>> Thanks,
>>> Brian
>> Scrapple.Tools.Threads implements the most important threading primitives on Win32 and Posix.
>>
>> http://dsource.org/projects/scrapple/browser/trunk/tools/tools/threads.d
>>
>>  --downs
> 
> Thanks, it looks good, does it compile & run under D 2.014?  
> 
No idea, I never tried - GDC 2.0 support is spotty.

> For the moment I'm using the simple hack: 	
> extern (C) void _d_monitorenter(Object obj);
> extern (C) void _d_monitorexit(Object obj);
> for a basic acquire/release mutex, but as my needs expand I want to avoid reinventing the wheel.
> 
> I'd be a lot more comfortable though if the powers that be would expose those two functions as methods on Object.
> 

Very much agreed.

> Brian
>