1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/websockets/websocket_frame.h"
#include <algorithm>
#include <vector>
#include "base/cxx17_backports.h"
#include "base/timer/elapsed_timer.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/perf/perf_result_reporter.h"
namespace net {
namespace {
const int kIterations = 100000;
const int kLongPayloadSize = 1 << 16;
const char kMaskingKey[] = "\xFE\xED\xBE\xEF";
static constexpr char kMetricPrefixWebSocketFrame[] = "WebSocketFrameMask.";
static constexpr char kMetricMaskTimeMs[] = "mask_time";
perf_test::PerfResultReporter SetUpWebSocketFrameMaskReporter(
const std::string& story) {
perf_test::PerfResultReporter reporter(kMetricPrefixWebSocketFrame, story);
reporter.RegisterImportantMetric(kMetricMaskTimeMs, "ms");
return reporter;
}
static_assert(base::size(kMaskingKey) ==
WebSocketFrameHeader::kMaskingKeyLength + 1,
"incorrect masking key size");
class WebSocketFrameTestMaskBenchmark : public ::testing::Test {
protected:
void Benchmark(const char* const story,
const char* const payload,
size_t size) {
std::vector<char> scratch(payload, payload + size);
WebSocketMaskingKey masking_key;
std::copy(kMaskingKey,
kMaskingKey + WebSocketFrameHeader::kMaskingKeyLength,
masking_key.key);
auto reporter = SetUpWebSocketFrameMaskReporter(story);
base::ElapsedTimer timer;
for (int x = 0; x < kIterations; ++x) {
MaskWebSocketFramePayload(masking_key, x % size, scratch.data(),
scratch.size());
}
reporter.AddResult(kMetricMaskTimeMs, timer.Elapsed().InMillisecondsF());
}
};
TEST_F(WebSocketFrameTestMaskBenchmark, BenchmarkMaskShortPayload) {
static const char kShortPayload[] = "Short Payload";
Benchmark("short_payload", kShortPayload, base::size(kShortPayload));
}
TEST_F(WebSocketFrameTestMaskBenchmark, BenchmarkMaskLongPayload) {
std::vector<char> payload(kLongPayloadSize, 'a');
Benchmark("long_payload", payload.data(), payload.size());
}
// A 31-byte payload is guaranteed to do 7 byte mask operations and 3 vector
// mask operations with an 8-byte vector. With a 16-byte vector it will fall
// back to the byte-only code path and do 31 byte mask operations.
TEST_F(WebSocketFrameTestMaskBenchmark, Benchmark31BytePayload) {
std::vector<char> payload(31, 'a');
Benchmark("31_payload", payload.data(), payload.size());
}
} // namespace
} // namespace net
|
