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Re: Question on C++ Thread Class and inheritance/polymorphism withPOSIX pthread

Chris M. Thomasson wrote:
>
"Ian Collins" <ia******@hotma il.comwrote in message
news:6m******** *****@mid.indiv idual.net...
>alexroat wrote:
>>private:
static void * gate(void *);//access point for pthread_create

This should be an extern "C" linkage function, not a static member.

[...]

Yes. Humm... Well, FWIW, I guess one can take advantage of compiler
specific extensions here. It's a dirty thing, but I think it would work.
Something like:

#if defined(_MSC_VE R)
# define DECLSPEC_CDECL __cdecl
#elif defined(__GNUC_ _)
# define DECLSPEC_CDECL __attribute__(( cdecl))
#else
# error MSVC or GCC REQUIRED!!!!! ;^(...
#endif
Why bother with all that nonsense when there is a standard solution?

--
Ian Collins
Oct 27 '08 #1
1 1815

"Ian Collins" <ia******@hotma il.comwrote in message
news:6m******** *****@mid.indiv idual.net...
Chris M. Thomasson wrote:
>>
"Ian Collins" <ia******@hotma il.comwrote in message
news:6m******* ******@mid.indi vidual.net...
>>alexroat wrote:
>>>private:
static void * gate(void *);//access point for pthread_create

This should be an extern "C" linkage function, not a static member.

[...]

Yes. Humm... Well, FWIW, I guess one can take advantage of compiler
specific extensions here. It's a dirty thing, but I think it would work.
Something like:

#if defined(_MSC_VE R)
# define DECLSPEC_CDECL __cdecl
#elif defined(__GNUC_ _)
# define DECLSPEC_CDECL __attribute__(( cdecl))
#else
# error MSVC or GCC REQUIRED!!!!! ;^(...
#endif
Why bother with all that nonsense when there is a standard solution?
Agreed. However, using the non-standard compiler specific hack can eliminate
the "need" to use a base-class for the thread class. The extern "C"
free-function has no idea what type what will be passed to it. This is not
the case for the hack version...

Oct 28 '08 #2

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