samples/pw_rpc/include/rpc_demo/deque_stream.h

// Copyright 2022 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
//     https://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.
#pragma once

#include <pw_stream/stream.h>
#include <pw_sync/mutex.h>

#include <deque>

class DequeReadWriter : public pw::stream::NonSeekableReaderWriter {
 public:
  DequeReadWriter() = default;

 protected:
  pw::StatusWithSize DoRead(pw::ByteSpan destination) override;
  pw::Status DoWrite(pw::ConstByteSpan data) override;

 private:
  std::deque<std::byte> buff_;
  pw::sync::Mutex mutex_;
};