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// 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/android/orderfile/orderfile_instrumentation.h"
#include <thread>
#include "base/android/library_loader/anchor_functions.h"
#include "base/strings/stringprintf.h"
#include "base/time/time.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/perf/perf_test.h"
namespace base {
namespace android {
namespace orderfile {
namespace {
// Records |addresses_count| distinct addresses |iterations| times, in
// |threads|.
void RunBenchmark(int iterations, int addresses_count, int threads) {
ResetForTesting();
auto iterate = [iterations, addresses_count]() {
for (int i = 0; i < iterations; i++) {
for (size_t addr = kStartOfTextForTesting;
addr < static_cast<size_t>(addresses_count); addr += sizeof(int)) {
RecordAddressForTesting(addr);
}
}
};
if (threads != 1) {
for (int i = 0; i < threads - 1; ++i) {
std::thread(iterate).detach();
}
}
auto tick = base::TimeTicks::Now();
iterate();
auto tock = base::TimeTicks::Now();
double nanos = static_cast<double>((tock - tick).InNanoseconds());
auto ns_per_call =
nanos / (iterations * static_cast<double>(addresses_count));
auto modifier =
base::StringPrintf("_%d_%d_%d", iterations, addresses_count, threads);
perf_test::PrintResult("RecordAddressCostPerCall", modifier, "", ns_per_call,
"ns", true);
}
} // namespace
class OrderfileInstrumentationTest : public ::testing::Test {
// Any tests need to run ResetForTesting() when they start. Because this
// perftest is built with instrumentation enabled, all code including
// ::testing::Test is instrumented. If ResetForTesting() is called earlier,
// for example in setUp(), any test harness code between setUp() and the
// actual test will change the instrumentation offset record in unpredictable
// ways and make these tests unreliable.
};
TEST_F(OrderfileInstrumentationTest, RecordOffset) {
ResetForTesting();
size_t first = 1234, second = 1456;
RecordAddressForTesting(first);
RecordAddressForTesting(second);
RecordAddressForTesting(first); // No duplicates.
RecordAddressForTesting(first + 1); // 4 bytes granularity.
Disable();
auto reached = GetOrderedOffsetsForTesting();
EXPECT_EQ(2UL, reached.size());
EXPECT_EQ(first - kStartOfTextForTesting, reached[0]);
EXPECT_EQ(second - kStartOfTextForTesting, reached[1]);
}
TEST_F(OrderfileInstrumentationTest, RecordingStops) {
ResetForTesting();
size_t first = 1234, second = 1456, third = 1789;
RecordAddressForTesting(first);
RecordAddressForTesting(second);
Disable();
RecordAddressForTesting(third);
auto reached = GetOrderedOffsetsForTesting();
ASSERT_EQ(2UL, reached.size());
ASSERT_EQ(first - kStartOfTextForTesting, reached[0]);
ASSERT_EQ(second - kStartOfTextForTesting, reached[1]);
}
TEST_F(OrderfileInstrumentationTest, OutOfBounds) {
ResetForTesting();
EXPECT_DEATH(RecordAddressForTesting(kEndOfTextForTesting + 100), "");
EXPECT_DEATH(RecordAddressForTesting(kStartOfTextForTesting - 100), "");
}
TEST(OrderfileInstrumentationPerfTest, RecordAddress_10_10000) {
RunBenchmark(10, 10000, 1);
}
TEST(OrderfileInstrumentationPerfTest, RecordAddress_100_10000) {
RunBenchmark(100, 10000, 1);
}
TEST(OrderfileInstrumentationPerfTest, RecordAddress_10_100000) {
RunBenchmark(10, 100000, 1);
}
TEST(OrderfileInstrumentationPerfTest, RecordAddress_100_100000) {
RunBenchmark(100, 100000, 1);
}
TEST(OrderfileInstrumentationPerfTest, RecordAddress_1000_100000_2) {
RunBenchmark(1000, 100000, 2);
}
TEST(OrderfileInstrumentationPerfTest, RecordAddress_1000_100000_3) {
RunBenchmark(1000, 100000, 3);
}
TEST(OrderfileInstrumentationPerfTest, RecordAddress_1000_100000_4) {
RunBenchmark(1000, 100000, 4);
}
TEST(OrderfileInstrumentationPerfTest, RecordAddress_1000_100000_6) {
RunBenchmark(1000, 100000, 6);
}
} // namespace orderfile
} // namespace android
} // namespace base
// Custom runner implementation since base's one requires JNI on Android.
int main(int argc, char** argv) {
testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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