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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#include <benchmark/benchmark.h>
#include <stdlib.h>
#include <algorithm>
#include <atomic>
#include <chrono>
#include <cstdint>
#include <map>
#include <string>
#include <thread>
#include <utility>
#include <vector>
#include "opentelemetry/common/key_value_iterable_view.h"
#include "opentelemetry/context/context.h"
#include "opentelemetry/metrics/meter.h"
#include "opentelemetry/metrics/sync_instruments.h"
#include "opentelemetry/nostd/function_ref.h"
#include "opentelemetry/nostd/shared_ptr.h"
#include "opentelemetry/nostd/unique_ptr.h"
#include "opentelemetry/sdk/common/attribute_utils.h"
#include "opentelemetry/sdk/instrumentationscope/instrumentation_scope.h"
#include "opentelemetry/sdk/metrics/export/metric_producer.h"
#include "opentelemetry/sdk/metrics/instruments.h"
#include "opentelemetry/sdk/metrics/meter_provider.h"
#include "opentelemetry/sdk/metrics/metric_reader.h"
using namespace opentelemetry;
using namespace opentelemetry::sdk::instrumentationscope;
using namespace opentelemetry::sdk::metrics;
using namespace opentelemetry::sdk::common;
class MockMetricExporter : public MetricReader
{
public:
MockMetricExporter() = default;
opentelemetry::sdk::metrics::AggregationTemporality GetAggregationTemporality(
opentelemetry::sdk::metrics::InstrumentType) const noexcept override
{
return AggregationTemporality::kCumulative;
}
private:
bool OnForceFlush(std::chrono::microseconds /*timeout*/) noexcept override { return true; }
bool OnShutDown(std::chrono::microseconds /*timeout*/) noexcept override { return true; }
void OnInitialized() noexcept override {}
};
namespace
{
void BM_MeasurementsTest(benchmark::State &state)
{
MeterProvider mp;
auto m = mp.GetMeter("meter1", "version1", "schema1");
std::shared_ptr<MetricReader> exporter(new MockMetricExporter());
mp.AddMetricReader(exporter);
auto h = m->CreateDoubleCounter("counter1", "counter1_description", "counter1_unit");
size_t MAX_MEASUREMENTS = 10000; // keep low to prevent CI failure due to timeout
size_t NUM_CORES = 1;
std::vector<std::thread> threads;
std::map<std::string, uint32_t> attributes[1000];
size_t total_index = 0;
for (uint32_t i = 0; i < 10; i++)
{
for (uint32_t j = 0; j < 10; j++)
for (uint32_t k = 0; k < 10; k++)
attributes[total_index++] = {{"dim1", i}, {"dim2", j}, {"dim3", k}};
}
while (state.KeepRunning())
{
threads.clear();
std::atomic<size_t> cur_processed{0};
for (size_t i = 0; i < NUM_CORES; i++)
{
threads.push_back(std::thread([&h, &cur_processed, &MAX_MEASUREMENTS, &attributes]() {
while (cur_processed++ <= MAX_MEASUREMENTS)
{
size_t index = rand() % 1000;
h->Add(1.0,
opentelemetry::common::KeyValueIterableView<std::map<std::string, uint32_t>>(
attributes[index]),
opentelemetry::context::Context{});
}
}));
}
for (auto &thread : threads)
{
thread.join();
}
}
exporter->Collect([&](ResourceMetrics & /*rm*/) { return true; });
}
BENCHMARK(BM_MeasurementsTest);
} // namespace
BENCHMARK_MAIN();
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