tree 308e92a6ff62a6812e70681594b7c16b32dbbd00
parent 07e8617a6db2368fa55d4616f371ee1b1403c817
author David Howden <dhowden@gmail.com> 1520159906 +1100
committer Hyang-Ah Hana Kim <hyangah@gmail.com> 1520523799 +0000

trace: fix races on concurrent Trace method calls

This change protects fields mutated by Trace methods with a mutex.
In particular it fixes races caused by concurrent calls to IsError,
and viewing active traces in /debug/requests.

Includes changes from CL/67730.

Updates golang/go#24231

Change-Id: I07db54c2642efe0ea0e3ffeb54ec796ae51e70ef
Reviewed-on: https://go-review.googlesource.com/98535
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>