diff options
| author | Austin Clements <austin@google.com> | 2019-04-03 16:32:42 -0400 |
|---|---|---|
| committer | Austin Clements <austin@google.com> | 2019-04-11 20:38:20 +0000 |
| commit | 0188cb0e8a7a2355a0eebbf557fc444e5bfa30de (patch) | |
| tree | a9272a6893ee7523928f475c7308cfa3ff3a3a60 /src/runtime/runtime2.go | |
| parent | d86c35e5232744674907fec5bd738dd3fbbf0f53 (diff) | |
| download | go-0188cb0e8a7a2355a0eebbf557fc444e5bfa30de.tar.xz | |
runtime: note about improved _Gscan bit handling
Change-Id: I8de5aa64a24e77e0ef876918fcace7668769ebc2
Reviewed-on: https://go-review.googlesource.com/c/go/+/171022
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Diffstat (limited to 'src/runtime/runtime2.go')
| -rw-r--r-- | src/runtime/runtime2.go | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/runtime/runtime2.go b/src/runtime/runtime2.go index cfea1cd45f..8d749f3d7c 100644 --- a/src/runtime/runtime2.go +++ b/src/runtime/runtime2.go @@ -22,6 +22,13 @@ const ( // If you add to this list, add to the list // of "okay during garbage collection" status // in mgcmark.go too. + // + // TODO(austin): The _Gscan bit could be much lighter-weight. + // For example, we could choose not to run _Gscanrunnable + // goroutines found in the run queue, rather than CAS-looping + // until they become _Grunnable. And transitions like + // _Gscanwaiting -> _Gscanrunnable are actually okay because + // they don't affect stack ownership. // _Gidle means this goroutine was just allocated and has not // yet been initialized. |