garnet/bin/ktrace_provider/device_reader.h

// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef GARNET_BIN_KTRACE_PROVIDER_DEVICE_READER_H_
#define GARNET_BIN_KTRACE_PROVIDER_DEVICE_READER_H_

#include <src/lib/files/unique_fd.h>
#include <src/lib/fxl/macros.h>

#include "garnet/bin/ktrace_provider/reader.h"

namespace ktrace_provider {

class DeviceReader : public Reader {
 public:
  DeviceReader();

 private:
  static constexpr size_t kChunkSize{16 * 4 * 1024};

  void ReadMoreData() override;

  fxl::UniqueFD fd_;

  char buffer_[kChunkSize];

  FXL_DISALLOW_COPY_AND_ASSIGN(DeviceReader);
};

}  // namespace ktrace_provider

#endif  // GARNET_BIN_KTRACE_PROVIDER_DEVICE_READER_H_