[Tsan] When will epochs be added and how this rule will be set

[847567161]

Hello guys,  

  I'm working on tsan and have a few questions:

  Q1: How do we know when we need to increase epoch？ How we designed it

  Q2: When will we do the clock sync, is there a list？

Looking forward to your reply.

Regards,

 Chuang

[Dmitry Vyukov]

On Mon, 29 Apr 2024 at 13:58, '847567161' via thread-sanitizer
<thread-s...@googlegroups.com> wrote:
>
> Hello guys,
> I'm working on tsan and have a few questions:
> Q1: How do we know when we need to increase epoch？ How we designed it

Hi Chuang,

Tsan should increment thread's epoch before each synchronization
release operation (mutex unlock, atomic-store-release).

> Q2: When will we do the clock sync, is there a list？

Grepping of source code for corresponding functions will provide the
best list. There is no special list outside of the source code.