[fpc-devel] CSuspendThread/CResumeThread

Jonas Maebe jonas.maebe at elis.ugent.be
Wed Nov 8 11:21:12 CET 2006

On 8 nov 2006, at 11:16, Ales Katona wrote:

> A cleaner naming of problematic parts:
> 1. TThreadID is defined stand-alone not as a pthread_t, should be  
> fixed.
> 2. TThreadHandler (the callback for resume, suspend) has result as  
> DWord
> while posix stuff (pthread_kill etc.) usualy return cInt
> 3. in linux I saw pthreads functions return longint, I think this is
> also investigation worthy.
> Question about #1. How should this be handled? Not sure if I can "use"
> unixtypes in sysosh.inc...

No, you probably can't since that would add all those types to the  
interface of the system unit. But in my mail I proposed a simple  
solution: just do it the other way round (type pthread_t = TThreadID)

> Question about #2. Well.. this is a tough nut? I suspect it's  
> because of
> various threading backends, but we need to handle those -1 properly if
> nothing else but this implies going over by all used pthread functions
> and seeing all possible values (which might be OS specific)

A similar solution as TThreadID probably (unless all OSes use signed  

> #3 is to be investigated.

Simply replace the longints with cInt. Those declarations are from  
before the time we had aliases for ctypes in the RTL.


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