36 lines
1.1 KiB
C++
36 lines
1.1 KiB
C++
// Copyright 2022 The Pigweed Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy of
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// the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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#include "pw_transfer/rate_estimate.h"
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namespace pw::transfer {
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size_t RateEstimate::GetRateBytesPerSecond() const {
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if (!start_time_.has_value()) {
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return 0;
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}
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auto elapsed_ms = std::chrono::duration_cast<std::chrono::milliseconds>(
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chrono::SystemClock::now() - start_time_.value());
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if (elapsed_ms.count() == 0) {
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return 0;
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}
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constexpr unsigned int kMillsecondsPerSecond = 1000;
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return (static_cast<uint64_t>(bytes_transferred_) * kMillsecondsPerSecond) /
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elapsed_ms.count();
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}
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} // namespace pw::transfer
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