Hi,
As you may know, gcc creates local statics that are thread safe by default. So I have a macro something like this:
#if __GCC__ #define THREAD_SAFE_STATIC(TYPE,NAME) static TYPE NAME; #else #define THREAD_SAFE_STATIC(TYPE,NAME) #error FIXME #endif
If your code can be used in the #else case, that would be great. I think it's important to use the gcc feature when available as the alternative will probably involve an unnecessary extra layer of locking.
Is there a way to reliably determine if the gcc's thread-safe local statics are enabled? If not, multithreaded library code that relies on that feature, for example, should hide static locals inside an out-of-line function/method in the odd event users of the library disable gcc's thread safe local statics for their own code through the '-fno-threadsafe-statics' command line option. HTH, -Ossama