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https://github.com/nestriness/cdc-file-transfer.git
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4326e972ac
The tools allow efficient and fast synchronization of large directory trees from a Windows workstation to a Linux target machine. cdc_rsync* support efficient copy of files by using content-defined chunking (CDC) to identify chunks within files that can be reused. asset_stream_manager + cdc_fuse_fs support efficient streaming of a local directory to a remote virtual file system based on FUSE. It also employs CDC to identify and reuse unchanged data chunks.
53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
/*
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* Copyright 2022 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef COMMON_STOPWATCH_H_
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#define COMMON_STOPWATCH_H_
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#include <chrono>
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#include "absl/time/time.h"
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#include "common/clock.h"
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namespace cdc_ft {
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class Stopwatch {
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public:
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using Timestamp = SteadyClock::Timestamp;
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explicit Stopwatch(SteadyClock* clock = DefaultSteadyClock::GetInstance());
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~Stopwatch();
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// Returns the elapsed time (in seconds) relative to construction or to the
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// last time when Reset() was called.
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double ElapsedSeconds() const;
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// Resets the elapsed time to zero.
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void Reset();
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// Returns the duration relative to construction or to the last time when
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// Reset() was called.
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absl::Duration Elapsed() const;
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private:
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SteadyClock* clock_;
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Timestamp start_;
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};
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} // namespace cdc_ft
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#endif // COMMON_STOPWATCH_H_
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