GC data structures allocation tracking
Adds a new stl compatible allocator that is used in most GC data
structures. When the data structures allocate and free memory, it
lets the heap know of how much memory was allocated or freed. Using
this info, we dump the approximated stl data structures memory usage
when a sigquit occurs.
The allocation tracking can be disabled with a compile time boolean
flag to remove performance impact.
Change-Id: Idddb6713169e07be913bceeb50f305c8573e4392
diff --git a/runtime/utils.h b/runtime/utils.h
index 72597f5..1c45048 100644
--- a/runtime/utils.h
+++ b/runtime/utils.h
@@ -107,6 +107,18 @@
return static_cast<uint32_t>(value >> 32);
}
+// A static if which determines whether to return type A or B based on the condition boolean.
+template <const bool condition, typename A, typename B>
+struct TypeStaticIf {
+ typedef A value;
+};
+
+// Specialization to handle the false case.
+template <typename A, typename B>
+struct TypeStaticIf<false, A, B> {
+ typedef B value;
+};
+
template<typename T>
static inline T RoundDown(T x, int n) {
CHECK(IsPowerOfTwo(n));