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tddb/td/db/utils/ChainBuffer.h

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+/*
+    This file is part of TON Blockchain Library.
+
+    TON Blockchain Library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    TON Blockchain Library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with TON Blockchain Library.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2017-2019 Telegram Systems LLP
+*/
+#pragma once
+#include "td/utils/common.h"
+
+#include "StreamInterface.h"
+
+namespace td {
+class ChainBuffer {
+ public:
+  struct Options {
+    Options() {
+    }
+    size_t chunk_size{1024 * 1024 / 8};  // default size of one chunk in chain buffer
+    size_t max_io_slices{128};           // size of buffer for writev
+  };
+  using Reader = StreamReader;
+  using Writer = StreamWriter;
+  static std::pair<Reader, Writer> create(Options options = {});
+};
+}  // namespace td