Re: proposal for ICU tracing

Carl W. Brown wrote:
 > There is a solution and that is to use thread local storage.  I have

[Suggests the use of thread local storage to allow tracing of the 
activity of individual threads in ICU]

I can certainly see how this would be useful for multi-threaded 
environments.  Without some threading help, traces from a multithreaded 
app would show overlapped ICU usage from the various threads, which 
could be quite confusing.

I am, however, reluctant to add a dependency on thread local storage to 
the core tracing code.  I would also want to verify that the time to 
access a TLS tracing flag was not notably different from the time to 
access a simple global tracing flag.

The good news is that the global tracing functions are user/application 
code, and could easily filter based on thread if that is needed.


   -- Andy Heninger
      [email protected]