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counter.cc
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Sat, Nov 9, 07:11

counter.cc
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// Copyright 2015 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "counter.h"
namespace benchmark {
namespace internal {
double Finish(Counter const& c, IterationCount iterations, double cpu_time,
double num_threads) {
double v = c.value;
if (c.flags & Counter::kIsRate) {
v /= cpu_time;
}
if (c.flags & Counter::kAvgThreads) {
v /= num_threads;
}
if (c.flags & Counter::kIsIterationInvariant) {
v *= iterations;
}
if (c.flags & Counter::kAvgIterations) {
v /= iterations;
}
if (c.flags & Counter::kInvert) { // Invert is *always* last.
v = 1.0 / v;
}
return v;
}
void Finish(UserCounters* l, IterationCount iterations, double cpu_time,
double num_threads) {
for (auto& c : *l) {
c.second.value = Finish(c.second, iterations, cpu_time, num_threads);
}
}
void Increment(UserCounters* l, UserCounters const& r) {
// add counters present in both or just in *l
for (auto& c : *l) {
auto it = r.find(c.first);
if (it != r.end()) {
c.second.value = c.second + it->second;
}
}
// add counters present in r, but not in *l
for (auto const& tc : r) {
auto it = l->find(tc.first);
if (it == l->end()) {
(*l)[tc.first] = tc.second;
}
}
}
bool SameNames(UserCounters const& l, UserCounters const& r) {
if (&l == &r) return true;
if (l.size() != r.size()) {
return false;
}
for (auto const& c : l) {
if (r.find(c.first) == r.end()) {
return false;
}
}
return true;
}
} // end namespace internal
} // end namespace benchmark

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