[llvm-dev] XRay feature – fdr log flushing

[Dean Michael Berris via llvm-dev]

> On 12 Jun 2018, at 07:50, Henry Zhu via llvm-dev <llvm-dev at lists.llvm.org> wrote:
> 
> Hello,
> 
>  
> Also, I’ve noticed that FDR mode doesn’t flush to a log unless programmatically configured to do so unlike basic mode, which flushes by default. Would it be possible to add this feature as well?
> 

FDR mode is specifically implemented so that the log is only flushed on-demand. Can you describe the use-case for “default flushing” a little bit more?

Adding an “exit handler” that will flush the currently installed XRay mode is tricky, but not impossible. It’s definitely something worth exploring more.

Cheers

-- Dean