1 files changed, 7 insertions, 0 deletions
diff --git a/standalone/allocator_common.h b/standalone/allocator_common.h
index 95f4776ac59..2b77516ad11 100644
--- a/standalone/allocator_common.h
+++ b/standalone/allocator_common.h
@@ -40,6 +40,7 @@ template <class SizeClassAllocator> struct TransferBatch {
     B->Count = static_cast<u16>(B->Count - N);
   }
   void clear() { Count = 0; }
+  bool empty() { return Count == 0; }
   void add(CompactPtrT P) {
     DCHECK_LT(Count, MaxNumCached);
     Batch[Count++] = P;
@@ -48,6 +49,12 @@ template <class SizeClassAllocator> struct TransferBatch {
     memcpy(Array, Batch, sizeof(Batch[0]) * Count);
     clear();
   }
+
+  void moveNToArray(CompactPtrT *Array, u16 N) {
+    DCHECK_LE(N, Count);
+    memcpy(Array, Batch + Count - N, sizeof(Batch[0]) * N);
+    Count = static_cast<u16>(Count - N);
+  }
   u16 getCount() const { return Count; }
   bool isEmpty() const { return Count == 0U; }
   CompactPtrT get(u16 I) const {