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| author | Cherry Mui <cherryyz@google.com> | 2022-11-16 17:32:08 -0500 |
|---|---|---|
| committer | Cherry Mui <cherryyz@google.com> | 2023-10-02 20:39:21 +0000 |
| commit | 340a4f55c4afac5b74c8df8365decb0c0237d710 (patch) | |
| tree | 6c323e9e445ec5693c9c58e102dbe677e2735c6a /src/runtime/mcentral.go | |
| parent | 32b6d2d9a849a0f0120e9139b403831669373b79 (diff) | |
| download | go-340a4f55c4afac5b74c8df8365decb0c0237d710.tar.xz | |
runtime: use smaller fields for mspan.freeindex and nelems
mspan.freeindex and nelems can fit into uint16 for all possible
values. Use uint16 instead of uintptr.
Change-Id: Ifce20751e81d5022be1f6b5cbb5fbe4fd1728b1b
Reviewed-on: https://go-review.googlesource.com/c/go/+/451359
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Diffstat (limited to 'src/runtime/mcentral.go')
| -rw-r--r-- | src/runtime/mcentral.go | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/runtime/mcentral.go b/src/runtime/mcentral.go index 78611994f3..b1dcbd7e7d 100644 --- a/src/runtime/mcentral.go +++ b/src/runtime/mcentral.go @@ -174,7 +174,7 @@ havespan: traceGCSweepDone() } n := int(s.nelems) - int(s.allocCount) - if n == 0 || s.freeindex == s.nelems || uintptr(s.allocCount) == s.nelems { + if n == 0 || s.freeindex == s.nelems || s.allocCount == s.nelems { throw("span has no free objects") } freeByteBase := s.freeindex &^ (64 - 1) |