Tracing/Profiling D Applications

[Ali Çehreli]

On 5/29/22 13:47, Christian Köstlin wrote:

 > Our discussion with using TLS for the
 > collectors proposed to not need any lock on the add method for
 > collector, because its thread local and with that thread safe?

It would be great that way but then the client changed the requirements 
on us:

On 5/26/22 12:54, Christian Köstlin wrote:
 > I want to be able to dump tracings even while the program is still 
running.

:p

If the collected data were TLS, then the dumping thread should be able 
to ask each thread to provide data collected so far. That either 
requires synchronization, which I did, which necessitated shared 
Collector objects; or messaging, which would require each thread 
checking their Concurrency message box.

I don't know...

A third option came to me: Each thread periodically puts their data to a 
common location and dumper dumps whatever is aggregated up to that 
point. This would reduce contention.

Ali