75 lines
2.5 KiB
C++
75 lines
2.5 KiB
C++
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// Copyright 2014 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "net/websockets/websocket_frame.h"
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#include <vector>
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#include "base/ranges/algorithm.h"
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#include "base/strings/string_piece.h"
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#include "base/timer/elapsed_timer.h"
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#include "testing/gtest/include/gtest/gtest.h"
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#include "testing/perf/perf_result_reporter.h"
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namespace net {
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namespace {
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constexpr int kIterations = 100000;
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constexpr int kLongPayloadSize = 1 << 16;
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constexpr base::StringPiece kMaskingKey = "\xFE\xED\xBE\xEF";
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static constexpr char kMetricPrefixWebSocketFrame[] = "WebSocketFrameMask.";
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static constexpr char kMetricMaskTimeMs[] = "mask_time";
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perf_test::PerfResultReporter SetUpWebSocketFrameMaskReporter(
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const std::string& story) {
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perf_test::PerfResultReporter reporter(kMetricPrefixWebSocketFrame, story);
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reporter.RegisterImportantMetric(kMetricMaskTimeMs, "ms");
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return reporter;
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}
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static_assert(kMaskingKey.size() == WebSocketFrameHeader::kMaskingKeyLength,
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"incorrect masking key size");
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class WebSocketFrameTestMaskBenchmark : public ::testing::Test {
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protected:
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void Benchmark(const char* const story,
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const char* const payload,
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size_t size) {
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std::vector<char> scratch(payload, payload + size);
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WebSocketMaskingKey masking_key;
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base::ranges::copy(kMaskingKey, masking_key.key);
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auto reporter = SetUpWebSocketFrameMaskReporter(story);
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base::ElapsedTimer timer;
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for (int x = 0; x < kIterations; ++x) {
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MaskWebSocketFramePayload(masking_key, x % size, scratch.data(),
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scratch.size());
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}
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reporter.AddResult(kMetricMaskTimeMs, timer.Elapsed().InMillisecondsF());
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}
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};
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TEST_F(WebSocketFrameTestMaskBenchmark, BenchmarkMaskShortPayload) {
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static const char kShortPayload[] = "Short Payload";
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Benchmark("short_payload", kShortPayload, std::size(kShortPayload));
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}
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TEST_F(WebSocketFrameTestMaskBenchmark, BenchmarkMaskLongPayload) {
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std::vector<char> payload(kLongPayloadSize, 'a');
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Benchmark("long_payload", payload.data(), payload.size());
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}
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// A 31-byte payload is guaranteed to do 7 byte mask operations and 3 vector
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// mask operations with an 8-byte vector. With a 16-byte vector it will fall
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// back to the byte-only code path and do 31 byte mask operations.
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TEST_F(WebSocketFrameTestMaskBenchmark, Benchmark31BytePayload) {
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std::vector<char> payload(31, 'a');
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Benchmark("31_payload", payload.data(), payload.size());
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}
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} // namespace
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} // namespace net
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