Refactor space bitmap to support different alignments.
Required for:
Using space bitmaps instead of std::set in mod union table +
remembered set.
Using a bitmap instead of set for large object marking.
Bug: 13571028
Change-Id: Id024e9563d4ca4278f79607cdb2f81895121b113
diff --git a/runtime/globals.h b/runtime/globals.h
index 7e85231..e3c54b8 100644
--- a/runtime/globals.h
+++ b/runtime/globals.h
@@ -50,9 +50,6 @@
// Required stack alignment
static constexpr size_t kStackAlignment = 16;
-// Required object alignment
-static constexpr size_t kObjectAlignment = 8;
-
// ARM instruction alignment. ARM processors require code to be 4-byte aligned,
// but ARM ELF requires 8..
static constexpr size_t kArmAlignment = 8;
@@ -72,6 +69,10 @@
// compile-time constant so the compiler can generate better code.
static constexpr int kPageSize = 4096;
+// Required object alignment
+static constexpr size_t kObjectAlignment = 8;
+static constexpr size_t kLargeObjectAlignment = kPageSize;
+
// Whether or not this is a debug build. Useful in conditionals where NDEBUG isn't.
#if defined(NDEBUG)
static constexpr bool kIsDebugBuild = false;