1 files changed, 8 insertions, 0 deletions
diff --git a/libartbase/base/atomic.h b/libartbase/base/atomic.h
index 226a088a40..91f1982720 100644
--- a/libartbase/base/atomic.h
+++ b/libartbase/base/atomic.h
@@ -125,6 +125,14 @@ class PACKED(sizeof(T)) Atomic : public std::atomic<T> {
   }
 };
 
+// Increment a debug- or statistics-only counter when there is a single writer, especially if
+// concurrent reads are uncommon. Usually appreciably faster in this case.
+// NOT suitable as an approximate counter with multiple writers.
+template <typename T>
+void IncrementStatsCounter(std::atomic<T>* a) {
+  a->store(a->load(std::memory_order_relaxed) + 1, std::memory_order_relaxed);
+}
+
 using AtomicInteger = Atomic<int32_t>;
 
 static_assert(sizeof(AtomicInteger) == sizeof(int32_t), "Weird AtomicInteger size");