diff options
Diffstat (limited to 'libgo/go/runtime/gc_test.go')
| -rw-r--r-- | libgo/go/runtime/gc_test.go | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/libgo/go/runtime/gc_test.go b/libgo/go/runtime/gc_test.go index 71d4656..11035c3 100644 --- a/libgo/go/runtime/gc_test.go +++ b/libgo/go/runtime/gc_test.go @@ -477,4 +477,21 @@ func testIfaceEqual(x interface{}) { } } +func TestPageAccounting(t *testing.T) { + // Grow the heap in small increments. This used to drop the + // pages-in-use count below zero because of a rounding + // mismatch (golang.org/issue/15022). + const blockSize = 64 << 10 + blocks := make([]*[blockSize]byte, (64<<20)/blockSize) + for i := range blocks { + blocks[i] = new([blockSize]byte) + } + + // Check that the running page count matches reality. + pagesInUse, counted := runtime.CountPagesInUse() + if pagesInUse != counted { + t.Fatalf("mheap_.pagesInUse is %d, but direct count is %d", pagesInUse, counted) + } +} + */ |