Re: [RFC/PATCH v4 3/3] add command performance tracing to debug scripted commands

[Karsten Blees <karsten.blees@gmail.com>]

Am 22.05.2014 11:59, schrieb Jeff King:
> On Thu, May 22, 2014 at 02:40:48AM +0200, Karsten Blees wrote:
> 
>> E.g. if I'm interested in a particular code section, I throw in 2
>> lines of code (before and after the code section). This gives very
>> accurate results, without significantly affecting overall performance.
>> I can then push the changes to my Linux/Windows box and get comparable
>> results there. No need to disable optimization. No worries that the
>> profiling tool isn't available on the other platform. No analyzing
>> megabytes of mostly irrelevant profiling data.
>>
>> Does that make sense?
> 
> Ah, I see. I misunderstood from your example above.
> 
> I do agree that automatically stamping with __FILE__ and __LINE__ is
> very helpful there. Could we maybe restrict that use of the variadic
> macros to a few known-good compilers (maybe #ifdef __GNUC__, which also
> hits clang, and something to catch MSVC)? On other systems it would
> become a compile-time noop, and they could live without the feature.
> 
> -Peff
> 

Alright then. I've queued vor v5:
* add __FILE__ __LINE__ for all trace output, if the compiler supports variadic macros
* add timestamp for all trace output
* perhaps move trace declarations to new trace.h
* improve commit messages of existing patches to clarify the issues discussed so far

I'm on holiday next week , so please be patient...

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