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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <regex>
#include <sstream>
#include <string>
#include <vector>
#include <sys/wait.h>
#include <unistd.h>
#include "common_runtime_test.h"
#include "base/file_utils.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/unix_file/fd_file.h"
#include "dex_file-inl.h"
#include "dex_file_loader.h"
#include "jit/profile_compilation_info.h"
#include "method_reference.h"
#include "runtime.h"
#include "utils.h"
namespace art {
struct ImageSizes {
size_t art_size = 0;
size_t oat_size = 0;
size_t vdex_size = 0;
};
std::ostream& operator<<(std::ostream& os, const ImageSizes& sizes) {
os << "art=" << sizes.art_size << " oat=" << sizes.oat_size << " vdex=" << sizes.vdex_size;
return os;
}
class Dex2oatImageTest : public CommonRuntimeTest {
public:
virtual void TearDown() OVERRIDE {}
protected:
// Visitors take method and type references
template <typename MethodVisitor, typename ClassVisitor>
void VisitLibcoreDexes(const MethodVisitor& method_visitor,
const ClassVisitor& class_visitor,
size_t method_frequency = 1,
size_t class_frequency = 1) {
size_t method_counter = 0;
size_t class_counter = 0;
for (const std::string& dex : GetLibCoreDexFileNames()) {
std::vector<std::unique_ptr<const DexFile>> dex_files;
std::string error_msg;
CHECK(DexFileLoader::Open(dex.c_str(),
dex,
/*verify*/ true,
/*verify_checksum*/ false,
&error_msg,
&dex_files))
<< error_msg;
for (const std::unique_ptr<const DexFile>& dex_file : dex_files) {
for (size_t i = 0; i < dex_file->NumMethodIds(); ++i) {
if (++method_counter % method_frequency == 0) {
method_visitor(MethodReference(dex_file.get(), i));
}
}
for (size_t i = 0; i < dex_file->NumTypeIds(); ++i) {
if (++class_counter % class_frequency == 0) {
class_visitor(TypeReference(dex_file.get(), dex::TypeIndex(i)));
}
}
}
}
}
static void WriteLine(File* file, std::string line) {
line += '\n';
EXPECT_TRUE(file->WriteFully(&line[0], line.length()));
}
void GenerateClasses(File* out_file, size_t frequency = 1) {
VisitLibcoreDexes(VoidFunctor(),
[out_file](TypeReference ref) {
WriteLine(out_file, ref.dex_file->PrettyType(ref.TypeIndex()));
}, frequency, frequency);
EXPECT_EQ(out_file->Flush(), 0);
}
void GenerateMethods(File* out_file, size_t frequency = 1) {
VisitLibcoreDexes([out_file](MethodReference ref) {
WriteLine(out_file, ref.PrettyMethod());
}, VoidFunctor(), frequency, frequency);
EXPECT_EQ(out_file->Flush(), 0);
}
void AddRuntimeArg(std::vector<std::string>& args, const std::string& arg) {
args.push_back("--runtime-arg");
args.push_back(arg);
}
ImageSizes CompileImageAndGetSizes(const std::vector<std::string>& extra_args) {
ImageSizes ret;
ScratchFile scratch;
std::string scratch_dir = scratch.GetFilename();
while (!scratch_dir.empty() && scratch_dir.back() != '/') {
scratch_dir.pop_back();
}
CHECK(!scratch_dir.empty()) << "No directory " << scratch.GetFilename();
std::string error_msg;
if (!CompileBootImage(extra_args, scratch.GetFilename(), &error_msg)) {
LOG(ERROR) << "Failed to compile image " << scratch.GetFilename() << error_msg;
}
std::string art_file = scratch.GetFilename() + ".art";
std::string oat_file = scratch.GetFilename() + ".oat";
std::string vdex_file = scratch.GetFilename() + ".vdex";
ret.art_size = GetFileSizeBytes(art_file);
ret.oat_size = GetFileSizeBytes(oat_file);
ret.vdex_size = GetFileSizeBytes(vdex_file);
CHECK_GT(ret.art_size, 0u) << art_file;
CHECK_GT(ret.oat_size, 0u) << oat_file;
CHECK_GT(ret.vdex_size, 0u) << vdex_file;
scratch.Close();
// Clear image files since we compile the image multiple times and don't want to leave any
// artifacts behind.
ClearDirectory(scratch_dir.c_str(), /*recursive*/ false);
return ret;
}
bool CompileBootImage(const std::vector<std::string>& extra_args,
const std::string& image_file_name_prefix,
std::string* error_msg) {
Runtime* const runtime = Runtime::Current();
std::vector<std::string> argv;
argv.push_back(runtime->GetCompilerExecutable());
AddRuntimeArg(argv, "-Xms64m");
AddRuntimeArg(argv, "-Xmx64m");
std::vector<std::string> dex_files = GetLibCoreDexFileNames();
for (const std::string& dex_file : dex_files) {
argv.push_back("--dex-file=" + dex_file);
argv.push_back("--dex-location=" + dex_file);
}
if (runtime->IsJavaDebuggable()) {
argv.push_back("--debuggable");
}
runtime->AddCurrentRuntimeFeaturesAsDex2OatArguments(&argv);
AddRuntimeArg(argv, "-Xverify:softfail");
if (!kIsTargetBuild) {
argv.push_back("--host");
}
argv.push_back("--image=" + image_file_name_prefix + ".art");
argv.push_back("--oat-file=" + image_file_name_prefix + ".oat");
argv.push_back("--oat-location=" + image_file_name_prefix + ".oat");
argv.push_back("--base=0x60000000");
std::vector<std::string> compiler_options = runtime->GetCompilerOptions();
argv.insert(argv.end(), compiler_options.begin(), compiler_options.end());
// We must set --android-root.
const char* android_root = getenv("ANDROID_ROOT");
CHECK(android_root != nullptr);
argv.push_back("--android-root=" + std::string(android_root));
argv.insert(argv.end(), extra_args.begin(), extra_args.end());
return RunDex2Oat(argv, error_msg);
}
int RunDex2Oat(const std::vector<std::string>& args, std::string* error_msg) {
int link[2];
if (pipe(link) == -1) {
return false;
}
pid_t pid = fork();
if (pid == -1) {
return false;
}
if (pid == 0) {
// We need dex2oat to actually log things.
setenv("ANDROID_LOG_TAGS", "*:f", 1);
dup2(link[1], STDERR_FILENO);
close(link[0]);
close(link[1]);
std::vector<const char*> c_args;
for (const std::string& str : args) {
c_args.push_back(str.c_str());
}
c_args.push_back(nullptr);
execv(c_args[0], const_cast<char* const*>(c_args.data()));
exit(1);
UNREACHABLE();
} else {
close(link[1]);
char buffer[128];
memset(buffer, 0, 128);
ssize_t bytes_read = 0;
while (TEMP_FAILURE_RETRY(bytes_read = read(link[0], buffer, 128)) > 0) {
*error_msg += std::string(buffer, bytes_read);
}
close(link[0]);
int status = -1;
if (waitpid(pid, &status, 0) != -1) {
return (status == 0);
}
return false;
}
}
};
TEST_F(Dex2oatImageTest, TestModesAndFilters) {
if (kIsTargetBuild) {
// This test is too slow for target builds.
return;
}
ImageSizes base_sizes = CompileImageAndGetSizes({});
ImageSizes image_classes_sizes;
ImageSizes compiled_classes_sizes;
ImageSizes compiled_all_classes_sizes;
ImageSizes compiled_methods_sizes;
ImageSizes compiled_all_methods_sizes;
ImageSizes profile_sizes;
std::cout << "Base compile sizes " << base_sizes << std::endl;
// Test image classes
{
ScratchFile classes;
GenerateClasses(classes.GetFile(), /*frequency*/ 1u);
image_classes_sizes = CompileImageAndGetSizes(
{"--image-classes=" + classes.GetFilename()});
classes.Close();
std::cout << "Image classes sizes " << image_classes_sizes << std::endl;
// Putting all classes as image classes should increase art size
EXPECT_GE(image_classes_sizes.art_size, base_sizes.art_size);
// Sanity check that dex is the same size.
EXPECT_EQ(image_classes_sizes.vdex_size, base_sizes.vdex_size);
}
// Test compiled classes with all the classes.
{
ScratchFile classes;
// Only compile every even class.
GenerateClasses(classes.GetFile(), /*frequency*/ 1u);
compiled_all_classes_sizes = CompileImageAndGetSizes(
{"--compiled-classes=" + classes.GetFilename()});
classes.Close();
std::cout << "Compiled all classes sizes " << compiled_all_classes_sizes << std::endl;
// Check that oat size is smaller since we didn't compile everything.
EXPECT_EQ(compiled_all_classes_sizes.art_size, base_sizes.art_size);
// TODO(mathieuc): Find a reliable way to check compiled code.
// EXPECT_EQ(compiled_all_classes_sizes.oat_size, base_sizes.oat_size);
EXPECT_EQ(compiled_all_classes_sizes.vdex_size, base_sizes.vdex_size);
}
// Test compiled classes.
{
ScratchFile classes;
// Only compile every even class.
GenerateClasses(classes.GetFile(), /*frequency*/ 2u);
compiled_classes_sizes = CompileImageAndGetSizes(
{"--image-classes=" + classes.GetFilename(),
"--compiled-classes=" + classes.GetFilename()});
classes.Close();
std::cout << "Compiled classes sizes " << compiled_classes_sizes << std::endl;
// Check that oat size is smaller since we didn't compile everything.
// TODO(mathieuc): Find a reliable way to check compiled code.
// EXPECT_LT(compiled_classes_sizes.oat_size, base_sizes.oat_size);
// Art file should be smaller than image classes version since we included fewer classes in the
// list.
EXPECT_LT(compiled_classes_sizes.art_size, image_classes_sizes.art_size);
}
// Test compiled methods.
{
ScratchFile methods;
// Only compile every even class.
GenerateMethods(methods.GetFile(), /*frequency*/ 1u);
compiled_all_methods_sizes = CompileImageAndGetSizes(
{"--compiled-methods=" + methods.GetFilename()});
methods.Close();
std::cout << "Compiled all methods sizes " << compiled_all_methods_sizes << std::endl;
EXPECT_EQ(compiled_all_classes_sizes.art_size, base_sizes.art_size);
// TODO(mathieuc): Find a reliable way to check compiled code. b/63746626
// EXPECT_EQ(compiled_all_classes_sizes.oat_size, base_sizes.oat_size);
EXPECT_EQ(compiled_all_classes_sizes.vdex_size, base_sizes.vdex_size);
}
static size_t kMethodFrequency = 3;
static size_t kTypeFrequency = 4;
// Test compiling fewer methods and classes.
{
ScratchFile methods;
ScratchFile classes;
// Only compile every even class.
GenerateMethods(methods.GetFile(), kMethodFrequency);
GenerateClasses(classes.GetFile(), kTypeFrequency);
compiled_methods_sizes = CompileImageAndGetSizes(
{"--image-classes=" + classes.GetFilename(),
"--compiled-methods=" + methods.GetFilename()});
methods.Close();
classes.Close();
std::cout << "Compiled fewer methods sizes " << compiled_methods_sizes << std::endl;
}
// Cross verify profile based image against image-classes and compiled-methods to make sure it
// matches.
{
ProfileCompilationInfo profile;
VisitLibcoreDexes([&profile](MethodReference ref) {
uint32_t flags = ProfileCompilationInfo::MethodHotness::kFlagHot |
ProfileCompilationInfo::MethodHotness::kFlagStartup;
EXPECT_TRUE(profile.AddMethodIndex(
static_cast<ProfileCompilationInfo::MethodHotness::Flag>(flags),
ref));
}, [&profile](TypeReference ref) {
EXPECT_TRUE(profile.AddClassForDex(ref));
}, kMethodFrequency, kTypeFrequency);
ScratchFile profile_file;
profile.Save(profile_file.GetFile()->Fd());
EXPECT_EQ(profile_file.GetFile()->Flush(), 0);
profile_sizes = CompileImageAndGetSizes(
{"--profile-file=" + profile_file.GetFilename(),
"--compiler-filter=speed-profile"});
profile_file.Close();
std::cout << "Profile sizes " << profile_sizes << std::endl;
// Since there is some difference between profile vs image + methods due to layout, check that
// the range is within expected margins (+-10%).
const double kRatio = 0.90;
EXPECT_LE(profile_sizes.art_size * kRatio, compiled_methods_sizes.art_size);
// TODO(mathieuc): Find a reliable way to check compiled code. b/63746626
// EXPECT_LE(profile_sizes.oat_size * kRatio, compiled_methods_sizes.oat_size);
EXPECT_LE(profile_sizes.vdex_size * kRatio, compiled_methods_sizes.vdex_size);
EXPECT_GE(profile_sizes.art_size / kRatio, compiled_methods_sizes.art_size);
// TODO(mathieuc): Find a reliable way to check compiled code. b/63746626
// EXPECT_GE(profile_sizes.oat_size / kRatio, compiled_methods_sizes.oat_size);
EXPECT_GE(profile_sizes.vdex_size / kRatio, compiled_methods_sizes.vdex_size);
}
// Test dirty image objects.
{
ScratchFile classes;
GenerateClasses(classes.GetFile(), /*frequency*/ 1u);
image_classes_sizes = CompileImageAndGetSizes(
{"--dirty-image-objects=" + classes.GetFilename()});
classes.Close();
std::cout << "Dirty image object sizes " << image_classes_sizes << std::endl;
}
}
} // namespace art