1 // Copyright (C) 2021 The Android Open Source Project
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //      http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #include <ditto/sampler.h>
16 
17 #include <cmath>
18 #include <ctime>
19 
20 #include <ditto/logger.h>
21 
22 namespace dittosuite {
23 
MeasureStart()24 void TimeSampler::MeasureStart() {
25   clock_gettime(CLOCK_MONOTONIC, &start_);
26 }
27 
MeasureEnd()28 void TimeSampler::MeasureEnd() {
29   clock_gettime(CLOCK_MONOTONIC, &end_);
30   samples_.push_back(end_ - start_);
31 }
32 
Measure(const size_t file_size,const timespec & duration)33 void BandwidthSampler::Measure(const size_t file_size, const timespec& duration) {
34   double bandwidth = file_size * 1e6 / TimespecToNanos(duration);  // currently bytes/milliseconds
35   bandwidth = bandwidth * 1e3 / (1 << 10);                      // Kb / s
36   samples_.push_back(bandwidth);
37 }
38 
39 }  // namespace dittosuite
40