| commit | 15c12762466b4c5f92b1668f86f73d0b1e66b62b | [log] [tgz] |
|---|---|---|
| author | Michael Anthony Knyszek <mknyszek@google.com> | Thu Apr 20 02:41:08 2023 +0000 |
| committer | Gopher Robot <gobot@golang.org> | Thu Apr 20 20:08:25 2023 +0000 |
| tree | ce0b27ce37f73cc1de9dd21fbeb26d1a937a0496 | |
| parent | bdccb85f509d24789694df198fe7bde948aa7955 [diff] |
runtime: bring back minHeapIdx in scavenge index The scavenge index currently doesn't guard against overflow, and CL 436395 removed the minHeapIdx optimization that allows the chunk scan to skip scanning chunks that haven't been mapped for the heap, and are only available as a consequence of chunks' mapped region being rounded out to a page on both ends. Because the 0'th chunk is never mapped, minHeapIdx effectively prevents overflow, fixing the iOS breakage. This change also refactors growth and initialization a little bit to decouple it from pageAlloc a bit and share code across platforms. Change-Id: If7fc3245aa81cf99451bf8468458da31986a9b0a Reviewed-on: https://go-review.googlesource.com/c/go/+/486695 Auto-Submit: Michael Knyszek <mknyszek@google.com> Reviewed-by: Michael Pratt <mpratt@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Michael Knyszek <mknyszek@google.com>
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