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89 lines
3.0 KiB
89 lines
3.0 KiB
/*
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* Copyright (C) 2020 The Android Open Source Project
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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 ART_LIBARTBASE_BASE_METRICS_METRICS_TEST_H_
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#define ART_LIBARTBASE_BASE_METRICS_METRICS_TEST_H_
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#include "metrics.h"
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#pragma clang diagnostic push
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#pragma clang diagnostic error "-Wconversion"
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namespace art {
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namespace metrics {
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namespace test {
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// This namespace contains functions that are helpful for testing metrics but should not be used in
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// production code.
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// A trivial MetricsBackend that does nothing for all of the members. This can be overridden by
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// test cases to test specific behaviors.
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class TestBackendBase : public MetricsBackend {
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public:
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void BeginOrUpdateSession([[maybe_unused]] const SessionData& session_data) override {}
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void BeginReport([[maybe_unused]] uint64_t timestamp_since_start_ms) override {}
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void ReportCounter([[maybe_unused]] DatumId counter_type,
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[[maybe_unused]] uint64_t value) override {}
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void ReportHistogram([[maybe_unused]] DatumId histogram_type,
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[[maybe_unused]] int64_t low_value_,
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[[maybe_unused]] int64_t high_value,
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[[maybe_unused]] const std::vector<uint32_t>& buckets) override {}
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void EndReport() override {}
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};
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template <typename MetricType>
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uint64_t CounterValue(const MetricType& counter) {
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uint64_t counter_value{0};
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struct CounterBackend : public TestBackendBase {
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explicit CounterBackend(uint64_t* counter_value) : counter_value_{counter_value} {}
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void ReportCounter(DatumId, uint64_t value) override { *counter_value_ = value; }
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uint64_t* counter_value_;
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} backend{&counter_value};
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counter.Report(&backend);
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return counter_value;
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}
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template <DatumId histogram_type, size_t num_buckets, int64_t low_value, int64_t high_value>
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std::vector<uint32_t> GetBuckets(
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const MetricsHistogram<histogram_type, num_buckets, low_value, high_value>& histogram) {
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std::vector<uint32_t> buckets;
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struct HistogramBackend : public TestBackendBase {
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explicit HistogramBackend(std::vector<uint32_t>* buckets) : buckets_{buckets} {}
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void ReportHistogram(DatumId, int64_t, int64_t, const std::vector<uint32_t>& buckets) override {
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*buckets_ = buckets;
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}
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std::vector<uint32_t>* buckets_;
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} backend{&buckets};
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histogram.Report(&backend);
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return buckets;
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}
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} // namespace test
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} // namespace metrics
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} // namespace art
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#pragma clang diagnostic pop // -Wconversion
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#endif // ART_LIBARTBASE_BASE_METRICS_METRICS_TEST_H_
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