On 07/25/16 08:28, Martin Liška wrote:
I'm also surprised about it :) Let's start without invention of a new flag, I'll work on that.
As using atomic add doesn't result in a change to the libgcov interface or structures, that's probably the best first approach. (It also probably gets the 90% case). thanks!
I like the idea sketched by Richard, utilizing TLS and merging counters, which fundamentally the same as merging with existing gcov file. However, I would put this lower priority than the former problem.
Richard's suggestion is interesting, and as it solves both problems it may be worth a quick experiment? Perhaps the memory cost isn't so overwhelming? After all, it'd be roughly the same per-thread cost as the current gcov counters are for the single threaded app they're designed for.
nathan
