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/*
*
* Copyright 2015 gRPC authors.
*
* 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.
*
*/
#ifndef TEST_QPS_HISTOGRAM_H
#define TEST_QPS_HISTOGRAM_H
#include <grpc/support/histogram.h>
#include "src/proto/grpc/testing/stats.pb.h"
namespace grpc {
namespace testing {
class Histogram {
public:
// TODO: look into making histogram params not hardcoded for C++
Histogram()
: impl_(gpr_histogram_create(default_resolution(),
default_max_possible())) {}
~Histogram() {
if (impl_) gpr_histogram_destroy(impl_);
}
Histogram(Histogram&& other) : impl_(other.impl_) { other.impl_ = nullptr; }
void Merge(const Histogram& h) { gpr_histogram_merge(impl_, h.impl_); }
void Add(double value) { gpr_histogram_add(impl_, value); }
double Percentile(double pctile) const {
return gpr_histogram_percentile(impl_, pctile);
}
double Count() const { return gpr_histogram_count(impl_); }
void Swap(Histogram* other) { std::swap(impl_, other->impl_); }
void FillProto(HistogramData* p) {
size_t n;
const auto* data = gpr_histogram_get_contents(impl_, &n);
for (size_t i = 0; i < n; i++) {
p->add_bucket(data[i]);
}
p->set_min_seen(gpr_histogram_minimum(impl_));
p->set_max_seen(gpr_histogram_maximum(impl_));
p->set_sum(gpr_histogram_sum(impl_));
p->set_sum_of_squares(gpr_histogram_sum_of_squares(impl_));
p->set_count(gpr_histogram_count(impl_));
}
void MergeProto(const HistogramData& p) {
gpr_histogram_merge_contents(impl_, &*p.bucket().begin(), p.bucket_size(),
p.min_seen(), p.max_seen(), p.sum(),
p.sum_of_squares(), p.count());
}
static double default_resolution() { return 0.01; }
static double default_max_possible() { return 60e9; }
private:
Histogram(const Histogram&);
Histogram& operator=(const Histogram&);
gpr_histogram* impl_;
};
} // namespace testing
} // namespace grpc
#endif /* TEST_QPS_HISTOGRAM_H */
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