| commit | d677899e903c4741920846f1af2c14c56f6e710e | [log] [tgz] |
|---|---|---|
| author | Michael Anthony Knyszek <mknyszek@google.com> | Thu Jul 23 22:36:58 2020 +0000 |
| committer | Michael Knyszek <mknyszek@google.com> | Mon Oct 26 17:26:40 2020 +0000 |
| tree | e054e41c7b55bc75e514c3846ee9c048258e38c2 | |
| parent | cca3d1e5533cb40beb9ef55bbc332b733adcc6ba [diff] |
runtime: flush local_scan directly and more often Now that local_scan is the last mcache-based statistic that is flushed by purgecachedstats, and heap_scan and gcController.revise may be interacted with concurrently, we don't need to flush heap_scan at arbitrary locations where the heap is locked, and we don't need purgecachedstats and cachestats anymore. Instead, we can flush local_scan at the same time we update heap_live in refill, so the two updates may share the same revise call. Clean up unused functions, remove code that would cause the heap to get locked in the allocSpan when it didn't need to (other than to flush local_scan), and flush local_scan explicitly in a few important places. Notably we need to flush local_scan whenever we flush the other stats, but it doesn't need to be donated anywhere, so have releaseAll do the flushing. Also, we need to flush local_scan before we set heap_scan at the end of a GC, which was previously handled by cachestats. Just do so explicitly -- it's not much code and it becomes a lot more clear why we need to do so. Change-Id: I35ac081784df7744d515479896a41d530653692d Reviewed-on: https://go-review.googlesource.com/c/go/+/246968 Run-TryBot: Michael Knyszek <mknyszek@google.com> Trust: Michael Knyszek <mknyszek@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Michael Pratt <mpratt@google.com>
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