[FR] Provide current benchmark information

[SunBlack]

Is your feature request related to a problem? Please describe. Currently at GoogleTest we use the name of the test to create a unique folder per test where the tests should write (so that the folder names are unique, but also easy to find when debugging for example). So we are using the data provided by testing::UnitTest::GetInstance()->current_test_info() in a helper class. Sadly, there is nothing similar in the Benchmark library.

Describe the solution you'd like Provide a way to retrieve information about the current running benchmark - similar to TestParamInfo of GoogleTest.

[EfesX]

Am I wrong, or does benchmark::State already provide all the required information about the benchmark?

[dmah42]

yes i'm surprised that State doesn't hold what you'd need as it's used to output this information in the reports.

[LebedevRI]

I suppose we could easily add family_index/per_family_instance_index/repetition_index to State (currently they are only in Run).