util/ForeignFifoBuffer: add method Swap()

1 files changed, 7 insertions, 0 deletions

diff --git a/src/util/ForeignFifoBuffer.hxx b/src/util/ForeignFifoBuffer.hxx
index c52846727..0ebcd6069 100644
--- a/src/util/ForeignFifoBuffer.hxx
+++ b/src/util/ForeignFifoBuffer.hxx
@@ -82,6 +82,13 @@ public:
 		return *this;
 	}
 
+	void Swap(ForeignFifoBuffer<T> &other) {
+		std::swap(head, other.head);
+		std::swap(tail, other.tail);
+		std::swap(capacity, other.capacity);
+		std::swap(data, other.data);
+	}
+
 	constexpr bool IsNull() const {
 		return data == nullptr;
 	}