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// Copyright 2015 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 "base/android/library_loader/library_prefetcher.h"
#include <string>
#include <vector>
#include "base/debug/proc_maps_linux.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace android {
namespace {
const uint8 kRead = base::debug::MappedMemoryRegion::READ;
const uint8 kReadPrivate = base::debug::MappedMemoryRegion::READ |
base::debug::MappedMemoryRegion::PRIVATE;
const uint8 kExecutePrivate = base::debug::MappedMemoryRegion::EXECUTE |
base::debug::MappedMemoryRegion::PRIVATE;
} // namespace
TEST(NativeLibraryPrefetcherTest, TestIsGoodToPrefetchNoRange) {
const base::debug::MappedMemoryRegion regions[4] = {
base::debug::MappedMemoryRegion{0x4000, 0x5000, 10, kReadPrivate, ""},
base::debug::MappedMemoryRegion{0x4000, 0x5000, 10, kReadPrivate, "foo"},
base::debug::MappedMemoryRegion{
0x4000, 0x5000, 10, kReadPrivate, "foobar.apk"},
base::debug::MappedMemoryRegion{
0x4000, 0x5000, 10, kReadPrivate, "libchromium.so"}};
for (int i = 0; i < 4; ++i) {
ASSERT_FALSE(NativeLibraryPrefetcher::IsGoodToPrefetch(regions[i]));
}
}
TEST(NativeLibraryPrefetcherTest, TestIsGoodToPrefetchUnreadableRange) {
const base::debug::MappedMemoryRegion region = {
0x4000, 0x5000, 10, kExecutePrivate, "base.apk"};
ASSERT_FALSE(NativeLibraryPrefetcher::IsGoodToPrefetch(region));
}
TEST(NativeLibraryPrefetcherTest, TestIsGoodToPrefetchSkipSharedRange) {
const base::debug::MappedMemoryRegion region = {
0x4000, 0x5000, 10, kRead, "base.apk"};
ASSERT_FALSE(NativeLibraryPrefetcher::IsGoodToPrefetch(region));
}
TEST(NativeLibraryPrefetcherTest, TestIsGoodToPrefetchLibchromeRange) {
const base::debug::MappedMemoryRegion region = {
0x4000, 0x5000, 10, kReadPrivate, "libchrome.so"};
ASSERT_TRUE(NativeLibraryPrefetcher::IsGoodToPrefetch(region));
}
TEST(NativeLibraryPrefetcherTest, TestIsGoodToPrefetchBaseApkRange) {
const base::debug::MappedMemoryRegion region = {
0x4000, 0x5000, 10, kReadPrivate, "base.apk"};
ASSERT_TRUE(NativeLibraryPrefetcher::IsGoodToPrefetch(region));
}
TEST(NativeLibraryPrefetcherTest,
TestFilterLibchromeRangesOnlyIfPossibleNoLibchrome) {
std::vector<base::debug::MappedMemoryRegion> regions;
regions.push_back(
base::debug::MappedMemoryRegion{0x1, 0x2, 0, kReadPrivate, "base.apk"});
regions.push_back(
base::debug::MappedMemoryRegion{0x3, 0x4, 0, kReadPrivate, "base.apk"});
std::vector<NativeLibraryPrefetcher::AddressRange> ranges;
NativeLibraryPrefetcher::FilterLibchromeRangesOnlyIfPossible(regions,
&ranges);
EXPECT_EQ(ranges.size(), 2U);
EXPECT_EQ(ranges[0].first, 0x1U);
EXPECT_EQ(ranges[0].second, 0x2U);
EXPECT_EQ(ranges[1].first, 0x3U);
EXPECT_EQ(ranges[1].second, 0x4U);
}
TEST(NativeLibraryPrefetcherTest,
TestFilterLibchromeRangesOnlyIfPossibleHasLibchrome) {
std::vector<base::debug::MappedMemoryRegion> regions;
regions.push_back(
base::debug::MappedMemoryRegion{0x1, 0x2, 0, kReadPrivate, "base.apk"});
regions.push_back(base::debug::MappedMemoryRegion{
0x6, 0x7, 0, kReadPrivate, "libchrome.so"});
regions.push_back(
base::debug::MappedMemoryRegion{0x3, 0x4, 0, kReadPrivate, "base.apk"});
std::vector<NativeLibraryPrefetcher::AddressRange> ranges;
NativeLibraryPrefetcher::FilterLibchromeRangesOnlyIfPossible(regions,
&ranges);
EXPECT_EQ(ranges.size(), 1U);
EXPECT_EQ(ranges[0].first, 0x6U);
EXPECT_EQ(ranges[0].second, 0x7U);
}
} // namespace android
} // namespace base
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