// // // 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 "src/proto/grpc/testing/stats.pb.h" #include "test/core/util/histogram.h" namespace grpc { namespace testing { class Histogram { public: // TODO(unknown): look into making histogram params not hardcoded for C++ Histogram() : impl_(grpc_histogram_create(default_resolution(), default_max_possible())) {} ~Histogram() { if (impl_) grpc_histogram_destroy(impl_); } void Reset() { if (impl_) grpc_histogram_destroy(impl_); impl_ = grpc_histogram_create(default_resolution(), default_max_possible()); } Histogram(Histogram&& other) noexcept : impl_(other.impl_) { other.impl_ = nullptr; } void Merge(const Histogram& h) { grpc_histogram_merge(impl_, h.impl_); } void Add(double value) { grpc_histogram_add(impl_, value); } double Percentile(double pctile) const { return grpc_histogram_percentile(impl_, pctile); } double Count() const { return grpc_histogram_count(impl_); } void Swap(Histogram* other) { std::swap(impl_, other->impl_); } void FillProto(HistogramData* p) { size_t n; const auto* data = grpc_histogram_get_contents(impl_, &n); for (size_t i = 0; i < n; i++) { p->add_bucket(data[i]); } p->set_min_seen(grpc_histogram_minimum(impl_)); p->set_max_seen(grpc_histogram_maximum(impl_)); p->set_sum(grpc_histogram_sum(impl_)); p->set_sum_of_squares(grpc_histogram_sum_of_squares(impl_)); p->set_count(grpc_histogram_count(impl_)); } void MergeProto(const HistogramData& p) { grpc_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&); grpc_histogram* impl_; }; } // namespace testing } // namespace grpc #endif // TEST_QPS_HISTOGRAM_H