diff options
Diffstat (limited to 'libgo/go/runtime/mpagecache_test.go')
-rw-r--r-- | libgo/go/runtime/mpagecache_test.go | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/libgo/go/runtime/mpagecache_test.go b/libgo/go/runtime/mpagecache_test.go index b8cc0bd..2ed0c0a 100644 --- a/libgo/go/runtime/mpagecache_test.go +++ b/libgo/go/runtime/mpagecache_test.go @@ -260,12 +260,13 @@ func TestPageAllocAllocToCache(t *testing.T) { if GOOS == "openbsd" && testing.Short() { t.Skip("skipping because virtual memory is limited; see #36210") } - tests := map[string]struct { + type test struct { before map[ChunkIdx][]BitRange scav map[ChunkIdx][]BitRange hits []PageCache // expected base addresses and patterns after map[ChunkIdx][]BitRange - }{ + } + tests := map[string]test{ "AllFree": { before: map[ChunkIdx][]BitRange{ BaseChunkIdx: {}, @@ -349,6 +350,34 @@ func TestPageAllocAllocToCache(t *testing.T) { }, }, } + if PageAlloc64Bit != 0 { + const chunkIdxBigJump = 0x100000 // chunk index offset which translates to O(TiB) + + // This test is similar to the one with the same name for + // pageAlloc.alloc and serves the same purpose. + // See mpagealloc_test.go for details. + sumsPerPhysPage := ChunkIdx(PhysPageSize / PallocSumBytes) + baseChunkIdx := BaseChunkIdx &^ (sumsPerPhysPage - 1) + tests["DiscontiguousMappedSumBoundary"] = test{ + before: map[ChunkIdx][]BitRange{ + baseChunkIdx + sumsPerPhysPage - 1: {{0, PallocChunkPages - 1}}, + baseChunkIdx + chunkIdxBigJump: {{1, PallocChunkPages - 1}}, + }, + scav: map[ChunkIdx][]BitRange{ + baseChunkIdx + sumsPerPhysPage - 1: {}, + baseChunkIdx + chunkIdxBigJump: {}, + }, + hits: []PageCache{ + NewPageCache(PageBase(baseChunkIdx+sumsPerPhysPage-1, PallocChunkPages-64), 1<<63, 0), + NewPageCache(PageBase(baseChunkIdx+chunkIdxBigJump, 0), 1, 0), + NewPageCache(0, 0, 0), + }, + after: map[ChunkIdx][]BitRange{ + baseChunkIdx + sumsPerPhysPage - 1: {{0, PallocChunkPages}}, + baseChunkIdx + chunkIdxBigJump: {{0, PallocChunkPages}}, + }, + } + } for name, v := range tests { v := v t.Run(name, func(t *testing.T) { |