1 files changed, 43 insertions, 0 deletions
diff --git a/src/seastar/include/seastar/core/internal/buffer_allocator.hh b/src/seastar/include/seastar/core/internal/buffer_allocator.hh
new file mode 100644
index 000000000..0cdd39e75
--- /dev/null
+++ b/src/seastar/include/seastar/core/internal/buffer_allocator.hh
@@ -0,0 +1,43 @@
+/*
+ * This file is open source software, licensed to you under the terms
+ * of the Apache License, Version 2.0 (the "License").  See the NOTICE file
+ * distributed with this work for additional information regarding copyright
+ * ownership.  You may not use this file except in compliance with the License.
+ *
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+/*
+ * Copyright (C) 2020 ScyllaDB
+ */
+
+#pragma once
+
+namespace seastar {
+
+template <typename CharType>
+class temporary_buffer;
+
+namespace internal {
+
+// Internal interface for allocating buffers for reads. Used to decouple
+// allocation strategies (where to allocate from, and what sizes) from the
+// point where allocation happens, to make it as late as possible.
+class buffer_allocator {
+public:
+    virtual ~buffer_allocator() = default;
+    virtual temporary_buffer<char> allocate_buffer() = 0;
+};
+
+
+}
+
+}