101 lines
3.0 KiB
C++
101 lines
3.0 KiB
C++
// Copyright 2017 The Chromium Authors
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
#include "base/json/json_reader.h"
|
|
#include "base/json/json_writer.h"
|
|
#include "base/memory/ptr_util.h"
|
|
#include "base/strings/string_number_conversions.h"
|
|
#include "base/time/time.h"
|
|
#include "base/values.h"
|
|
#include "build/build_config.h"
|
|
#include "testing/gtest/include/gtest/gtest.h"
|
|
#include "testing/perf/perf_result_reporter.h"
|
|
|
|
namespace base {
|
|
|
|
namespace {
|
|
|
|
constexpr char kMetricPrefixJSON[] = "JSON.";
|
|
constexpr char kMetricReadTime[] = "read_time";
|
|
constexpr char kMetricWriteTime[] = "write_time";
|
|
|
|
perf_test::PerfResultReporter SetUpReporter(const std::string& story_name) {
|
|
perf_test::PerfResultReporter reporter(kMetricPrefixJSON, story_name);
|
|
reporter.RegisterImportantMetric(kMetricReadTime, "ms");
|
|
reporter.RegisterImportantMetric(kMetricWriteTime, "ms");
|
|
return reporter;
|
|
}
|
|
|
|
// Generates a simple dictionary value with simple data types, a string and a
|
|
// list.
|
|
Value::Dict GenerateDict() {
|
|
Value::Dict root;
|
|
root.Set("Double", 3.141);
|
|
root.Set("Bool", true);
|
|
root.Set("Int", 42);
|
|
root.Set("String", "Foo");
|
|
|
|
Value::List list;
|
|
list.Append(2.718);
|
|
list.Append(false);
|
|
list.Append(123);
|
|
list.Append("Bar");
|
|
root.Set("List", std::move(list));
|
|
|
|
return root;
|
|
}
|
|
|
|
// Generates a tree-like dictionary value with a size of O(breadth ** depth).
|
|
Value::Dict GenerateLayeredDict(int breadth, int depth) {
|
|
if (depth == 1)
|
|
return GenerateDict();
|
|
|
|
Value::Dict root = GenerateDict();
|
|
Value::Dict next = GenerateLayeredDict(breadth, depth - 1);
|
|
|
|
for (int i = 0; i < breadth; ++i) {
|
|
root.Set("Dict" + base::NumberToString(i), next.Clone());
|
|
}
|
|
|
|
return root;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
class JSONPerfTest : public testing::Test {
|
|
public:
|
|
void TestWriteAndRead(int breadth, int depth) {
|
|
std::string description = "Breadth: " + base::NumberToString(breadth) +
|
|
", Depth: " + base::NumberToString(depth);
|
|
Value::Dict dict = GenerateLayeredDict(breadth, depth);
|
|
std::string json;
|
|
|
|
TimeTicks start_write = TimeTicks::Now();
|
|
JSONWriter::Write(dict, &json);
|
|
TimeTicks end_write = TimeTicks::Now();
|
|
auto reporter = SetUpReporter("breadth_" + base::NumberToString(breadth) +
|
|
"_depth_" + base::NumberToString(depth));
|
|
reporter.AddResult(kMetricWriteTime, end_write - start_write);
|
|
|
|
TimeTicks start_read = TimeTicks::Now();
|
|
JSONReader::Read(json);
|
|
TimeTicks end_read = TimeTicks::Now();
|
|
reporter.AddResult(kMetricReadTime, end_read - start_read);
|
|
}
|
|
};
|
|
|
|
TEST_F(JSONPerfTest, StressTest) {
|
|
// These loop ranges are chosen such that this test will complete in a
|
|
// reasonable amount of time and will work on a 32-bit build without hitting
|
|
// an out-of-memory failure. Having j go to 10 uses over 2 GiB of memory and
|
|
// might hit Android timeouts so be wary of going that high.
|
|
for (int i = 0; i < 4; ++i) {
|
|
for (int j = 0; j < 10; ++j) {
|
|
TestWriteAndRead(i + 1, j + 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace base
|