quic/core/quic_bandwidth.cc

// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "net/third_party/quiche/src/quic/core/quic_bandwidth.h"

#include <cinttypes>
#include <string>

#include "net/third_party/quiche/src/common/platform/api/quiche_str_cat.h"
#include "net/third_party/quiche/src/common/platform/api/quiche_string_piece.h"

namespace quic {

std::string QuicBandwidth::ToDebuggingValue() const {
  if (bits_per_second_ < 80000) {
    return quiche::QuicheStringPrintf("%" PRId64 " bits/s (%" PRId64
                                      " bytes/s)",
                                      bits_per_second_, bits_per_second_ / 8);
  }

  double divisor;
  char unit;
  if (bits_per_second_ < 8 * 1000 * 1000) {
    divisor = 1e3;
    unit = 'k';
  } else if (bits_per_second_ < INT64_C(8) * 1000 * 1000 * 1000) {
    divisor = 1e6;
    unit = 'M';
  } else {
    divisor = 1e9;
    unit = 'G';
  }

  double bits_per_second_with_unit = bits_per_second_ / divisor;
  double bytes_per_second_with_unit = bits_per_second_with_unit / 8;
  return quiche::QuicheStringPrintf("%.2f %cbits/s (%.2f %cbytes/s)",
                                    bits_per_second_with_unit, unit,
                                    bytes_per_second_with_unit, unit);
}

}  // namespace quic