Re: [TCLCORE] new branch mig-alloc-reform

[miguel s. <mig...@gm...>]

On 03/18/2011 01:20 PM, Andreas Kupries wrote:
> On 3/18/2011 6:29 AM, miguel sofer wrote:
>> A note for testing: if your compiler understands __thread, do use
>
> There can we find information about __thread ?
>
>> -DHAVE_FAST_TSD for a big speedup.
>>
>> The corresponding autoconf'erry is not there yet :(
>

For a description of __thread see eg
http://gcc.gnu.org/onlinedocs/gcc-3.3.1/gcc/Thread-Local.html
http://en.wikipedia.org/wiki/Thread-local_storage

Apparently __thread is in C99? Not sure I understand the meaning of
http://gcc.gnu.org/onlinedocs/gcc/C99-Thread_002dLocal-Edits.html#C99-Thread_002dLocal-Edits

OSX:
http://lifecs.likai.org/2010/05/mac-os-x-thread-local-storage.html
http://permalink.gmane.org/gmane.comp.compilers.clang.devel/13402

For windows (seems to require Vista+ or Server2008+ to work properly 
with dlls):
   #define __thread __declspec(thread)
See
http://msdn.microsoft.com/en-us/library/4ax54352%28VS.71%29.aspx
http://www.helsinki.fi/atk/unix/dec_manuals/DOC_40D/AQTLMCTE/DOCU_018.HTM

The "autoconf'erry" should just do a TRY_COMPILE: if it works, it works 
... or else there is a compiler bug like
http://mingw-users.1079350.n2.nabble.com/gcc-4-4-multi-threaded-exception-handling-amp-thread-specifier-not-working-td3440749.html