tree 4ad8eb06f8993b0ac6a444f1ca45bcc2fb231380
parent 44fe0820c6c304cb56592b07c0d9b2f90c3a20ce
author Austin Clements <austin@google.com> 1492789544 -0400
committer Austin Clements <austin@google.com> 1492796511 +0000

runtime: consistently use atomic loads for heap_live

heap_live is updated atomically without locking, so we should also use
atomic loads to read it. Fix the reads of heap_live that happen
outside of STW to be atomic.

Change-Id: Idca9451c348168c2a792a9499af349833a3c333f
Reviewed-on: https://go-review.googlesource.com/41371
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rick Hudson <rlh@golang.org>