Commits on Jul 6, 2023

1. [umf] create/destroy memory tracker in lib ctor/dtor …

   instead of relying on global variable init/destruction on
   linux and on windows (when building UMF as a shared lib).
   
   In C++ no guarantee is made for initialization order of
   static variables across translation units.
   
   This is problematic when an application (e.g. SYCL) wants
   to do some cleanup in it's library destructor. Such application
   might want to specify priority for it's destructor (to make sure
   it's executed before any other library desturctor) but it doesn't
   seem to work for static variables.
   
   Memory tracker is still created as a global object when building
   UMF as a static lib on Windows - there is no
   __attribute__((destructor)) equivalent that would work for static
   library.

   

   igchor committed Jul 6, 2023
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