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allwinner_a64/android/art/runtime/jit/profile_compilation_info_test.cc
August b9e30e05b1 upload android base code part3
2018-08-08 16:48:17 +08:00

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/*
* Copyright (C) 2016 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 <gtest/gtest.h>
#include "base/unix_file/fd_file.h"
#include "art_method-inl.h"
#include "class_linker-inl.h"
#include "common_runtime_test.h"
#include "dex_file.h"
#include "method_reference.h"
#include "mirror/class-inl.h"
#include "mirror/class_loader.h"
#include "handle_scope-inl.h"
#include "jit/profile_compilation_info.h"
#include "linear_alloc.h"
#include "scoped_thread_state_change-inl.h"
#include "type_reference.h"
namespace art {
using Hotness = ProfileCompilationInfo::MethodHotness;
static constexpr size_t kMaxMethodIds = 65535;
class ProfileCompilationInfoTest : public CommonRuntimeTest {
public:
void PostRuntimeCreate() OVERRIDE {
arena_.reset(new ArenaAllocator(Runtime::Current()->GetArenaPool()));
}
protected:
std::vector<ArtMethod*> GetVirtualMethods(jobject class_loader,
const std::string& clazz) {
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
Thread* self = Thread::Current();
ScopedObjectAccess soa(self);
StackHandleScope<1> hs(self);
Handle<mirror::ClassLoader> h_loader(
hs.NewHandle(self->DecodeJObject(class_loader)->AsClassLoader()));
mirror::Class* klass = class_linker->FindClass(self, clazz.c_str(), h_loader);
const auto pointer_size = class_linker->GetImagePointerSize();
std::vector<ArtMethod*> methods;
for (auto& m : klass->GetVirtualMethods(pointer_size)) {
methods.push_back(&m);
}
return methods;
}
bool AddMethod(const std::string& dex_location,
uint32_t checksum,
uint16_t method_index,
ProfileCompilationInfo* info) {
return info->AddMethodIndex(Hotness::kFlagHot,
dex_location,
checksum,
method_index,
kMaxMethodIds);
}
bool AddMethod(const std::string& dex_location,
uint32_t checksum,
uint16_t method_index,
const ProfileCompilationInfo::OfflineProfileMethodInfo& pmi,
ProfileCompilationInfo* info) {
return info->AddMethod(dex_location, checksum, method_index, kMaxMethodIds, pmi);
}
bool AddClass(const std::string& dex_location,
uint32_t checksum,
dex::TypeIndex type_index,
ProfileCompilationInfo* info) {
DexCacheResolvedClasses classes(dex_location, dex_location, checksum, kMaxMethodIds);
classes.AddClass(type_index);
return info->AddClasses({classes});
}
uint32_t GetFd(const ScratchFile& file) {
return static_cast<uint32_t>(file.GetFd());
}
bool SaveProfilingInfo(
const std::string& filename,
const std::vector<ArtMethod*>& methods,
const std::set<DexCacheResolvedClasses>& resolved_classes) {
ProfileCompilationInfo info;
std::vector<ProfileMethodInfo> profile_methods;
ScopedObjectAccess soa(Thread::Current());
for (ArtMethod* method : methods) {
profile_methods.emplace_back(
MethodReference(method->GetDexFile(), method->GetDexMethodIndex()));
}
if (!info.AddMethods(profile_methods) || !info.AddClasses(resolved_classes)) {
return false;
}
if (info.GetNumberOfMethods() != profile_methods.size()) {
return false;
}
ProfileCompilationInfo file_profile;
if (!file_profile.Load(filename, false)) {
return false;
}
if (!info.MergeWith(file_profile)) {
return false;
}
return info.Save(filename, nullptr);
}
// Saves the given art methods to a profile backed by 'filename' and adds
// some fake inline caches to it. The added inline caches are returned in
// the out map `profile_methods_map`.
bool SaveProfilingInfoWithFakeInlineCaches(
const std::string& filename,
const std::vector<ArtMethod*>& methods,
/*out*/ SafeMap<ArtMethod*, ProfileMethodInfo>* profile_methods_map) {
ProfileCompilationInfo info;
std::vector<ProfileMethodInfo> profile_methods;
ScopedObjectAccess soa(Thread::Current());
for (ArtMethod* method : methods) {
std::vector<ProfileMethodInfo::ProfileInlineCache> caches;
// Monomorphic
for (uint16_t dex_pc = 0; dex_pc < 11; dex_pc++) {
std::vector<TypeReference> classes;
classes.emplace_back(method->GetDexFile(), dex::TypeIndex(0));
caches.emplace_back(dex_pc, /*is_missing_types*/false, classes);
}
// Polymorphic
for (uint16_t dex_pc = 11; dex_pc < 22; dex_pc++) {
std::vector<TypeReference> classes;
for (uint16_t k = 0; k < InlineCache::kIndividualCacheSize / 2; k++) {
classes.emplace_back(method->GetDexFile(), dex::TypeIndex(k));
}
caches.emplace_back(dex_pc, /*is_missing_types*/false, classes);
}
// Megamorphic
for (uint16_t dex_pc = 22; dex_pc < 33; dex_pc++) {
std::vector<TypeReference> classes;
for (uint16_t k = 0; k < 2 * InlineCache::kIndividualCacheSize; k++) {
classes.emplace_back(method->GetDexFile(), dex::TypeIndex(k));
}
caches.emplace_back(dex_pc, /*is_missing_types*/false, classes);
}
// Missing types
for (uint16_t dex_pc = 33; dex_pc < 44; dex_pc++) {
std::vector<TypeReference> classes;
caches.emplace_back(dex_pc, /*is_missing_types*/true, classes);
}
ProfileMethodInfo pmi(MethodReference(method->GetDexFile(),
method->GetDexMethodIndex()),
caches);
profile_methods.push_back(pmi);
profile_methods_map->Put(method, pmi);
}
if (!info.AddMethods(profile_methods) || info.GetNumberOfMethods() != profile_methods.size()) {
return false;
}
return info.Save(filename, nullptr);
}
// Creates an inline cache which will be destructed at the end of the test.
ProfileCompilationInfo::InlineCacheMap* CreateInlineCacheMap() {
used_inline_caches.emplace_back(new ProfileCompilationInfo::InlineCacheMap(
std::less<uint16_t>(), arena_->Adapter(kArenaAllocProfile)));
return used_inline_caches.back().get();
}
ProfileCompilationInfo::OfflineProfileMethodInfo ConvertProfileMethodInfo(
const ProfileMethodInfo& pmi) {
ProfileCompilationInfo::InlineCacheMap* ic_map = CreateInlineCacheMap();
ProfileCompilationInfo::OfflineProfileMethodInfo offline_pmi(ic_map);
SafeMap<DexFile*, uint8_t> dex_map; // dex files to profile index
for (const auto& inline_cache : pmi.inline_caches) {
ProfileCompilationInfo::DexPcData& dex_pc_data =
ic_map->FindOrAdd(
inline_cache.dex_pc, ProfileCompilationInfo::DexPcData(arena_.get()))->second;
if (inline_cache.is_missing_types) {
dex_pc_data.SetIsMissingTypes();
}
for (const auto& class_ref : inline_cache.classes) {
uint8_t dex_profile_index = dex_map.FindOrAdd(const_cast<DexFile*>(class_ref.dex_file),
static_cast<uint8_t>(dex_map.size()))->second;
dex_pc_data.AddClass(dex_profile_index, class_ref.type_index);
if (dex_profile_index >= offline_pmi.dex_references.size()) {
// This is a new dex.
const std::string& dex_key = ProfileCompilationInfo::GetProfileDexFileKey(
class_ref.dex_file->GetLocation());
offline_pmi.dex_references.emplace_back(dex_key,
class_ref.dex_file->GetLocationChecksum(),
class_ref.dex_file->NumMethodIds());
}
}
}
return offline_pmi;
}
// Creates an offline profile used for testing inline caches.
ProfileCompilationInfo::OfflineProfileMethodInfo GetOfflineProfileMethodInfo() {
ProfileCompilationInfo::InlineCacheMap* ic_map = CreateInlineCacheMap();
// Monomorphic
for (uint16_t dex_pc = 0; dex_pc < 11; dex_pc++) {
ProfileCompilationInfo::DexPcData dex_pc_data(arena_.get());
dex_pc_data.AddClass(0, dex::TypeIndex(0));
ic_map->Put(dex_pc, dex_pc_data);
}
// Polymorphic
for (uint16_t dex_pc = 11; dex_pc < 22; dex_pc++) {
ProfileCompilationInfo::DexPcData dex_pc_data(arena_.get());
dex_pc_data.AddClass(0, dex::TypeIndex(0));
dex_pc_data.AddClass(1, dex::TypeIndex(1));
dex_pc_data.AddClass(2, dex::TypeIndex(2));
ic_map->Put(dex_pc, dex_pc_data);
}
// Megamorphic
for (uint16_t dex_pc = 22; dex_pc < 33; dex_pc++) {
ProfileCompilationInfo::DexPcData dex_pc_data(arena_.get());
dex_pc_data.SetIsMegamorphic();
ic_map->Put(dex_pc, dex_pc_data);
}
// Missing types
for (uint16_t dex_pc = 33; dex_pc < 44; dex_pc++) {
ProfileCompilationInfo::DexPcData dex_pc_data(arena_.get());
dex_pc_data.SetIsMissingTypes();
ic_map->Put(dex_pc, dex_pc_data);
}
ProfileCompilationInfo::OfflineProfileMethodInfo pmi(ic_map);
pmi.dex_references.emplace_back("dex_location1", /* checksum */1, kMaxMethodIds);
pmi.dex_references.emplace_back("dex_location2", /* checksum */2, kMaxMethodIds);
pmi.dex_references.emplace_back("dex_location3", /* checksum */3, kMaxMethodIds);
return pmi;
}
void MakeMegamorphic(/*out*/ProfileCompilationInfo::OfflineProfileMethodInfo* pmi) {
ProfileCompilationInfo::InlineCacheMap* ic_map =
const_cast<ProfileCompilationInfo::InlineCacheMap*>(pmi->inline_caches);
for (auto it : *ic_map) {
for (uint16_t k = 0; k <= 2 * InlineCache::kIndividualCacheSize; k++) {
it.second.AddClass(0, dex::TypeIndex(k));
}
}
}
void SetIsMissingTypes(/*out*/ProfileCompilationInfo::OfflineProfileMethodInfo* pmi) {
ProfileCompilationInfo::InlineCacheMap* ic_map =
const_cast<ProfileCompilationInfo::InlineCacheMap*>(pmi->inline_caches);
for (auto it : *ic_map) {
it.second.SetIsMissingTypes();
}
}
// Cannot sizeof the actual arrays so hard code the values here.
// They should not change anyway.
static constexpr int kProfileMagicSize = 4;
static constexpr int kProfileVersionSize = 4;
std::unique_ptr<ArenaAllocator> arena_;
// Cache of inline caches generated during tests.
// This makes it easier to pass data between different utilities and ensure that
// caches are destructed at the end of the test.
std::vector<std::unique_ptr<ProfileCompilationInfo::InlineCacheMap>> used_inline_caches;
};
TEST_F(ProfileCompilationInfoTest, SaveArtMethods) {
ScratchFile profile;
Thread* self = Thread::Current();
jobject class_loader;
{
ScopedObjectAccess soa(self);
class_loader = LoadDex("ProfileTestMultiDex");
}
ASSERT_NE(class_loader, nullptr);
// Save virtual methods from Main.
std::set<DexCacheResolvedClasses> resolved_classes;
std::vector<ArtMethod*> main_methods = GetVirtualMethods(class_loader, "LMain;");
ASSERT_TRUE(SaveProfilingInfo(profile.GetFilename(), main_methods, resolved_classes));
// Check that what we saved is in the profile.
ProfileCompilationInfo info1;
ASSERT_TRUE(info1.Load(GetFd(profile)));
ASSERT_EQ(info1.GetNumberOfMethods(), main_methods.size());
{
ScopedObjectAccess soa(self);
for (ArtMethod* m : main_methods) {
ASSERT_TRUE(info1.GetMethodHotness(
MethodReference(m->GetDexFile(), m->GetDexMethodIndex())).IsHot());
}
}
// Save virtual methods from Second.
std::vector<ArtMethod*> second_methods = GetVirtualMethods(class_loader, "LSecond;");
ASSERT_TRUE(SaveProfilingInfo(profile.GetFilename(), second_methods, resolved_classes));
// Check that what we saved is in the profile (methods form Main and Second).
ProfileCompilationInfo info2;
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_TRUE(info2.Load(GetFd(profile)));
ASSERT_EQ(info2.GetNumberOfMethods(), main_methods.size() + second_methods.size());
{
ScopedObjectAccess soa(self);
for (ArtMethod* m : main_methods) {
ASSERT_TRUE(
info2.GetMethodHotness(MethodReference(m->GetDexFile(), m->GetDexMethodIndex())).IsHot());
}
for (ArtMethod* m : second_methods) {
ASSERT_TRUE(
info2.GetMethodHotness(MethodReference(m->GetDexFile(), m->GetDexMethodIndex())).IsHot());
}
}
}
TEST_F(ProfileCompilationInfoTest, SaveFd) {
ScratchFile profile;
ProfileCompilationInfo saved_info;
// Save a few methods.
for (uint16_t i = 0; i < 10; i++) {
ASSERT_TRUE(AddMethod("dex_location1", /* checksum */ 1, /* method_idx */ i, &saved_info));
ASSERT_TRUE(AddMethod("dex_location2", /* checksum */ 2, /* method_idx */ i, &saved_info));
}
ASSERT_TRUE(saved_info.Save(GetFd(profile)));
ASSERT_EQ(0, profile.GetFile()->Flush());
// Check that we get back what we saved.
ProfileCompilationInfo loaded_info;
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_TRUE(loaded_info.Load(GetFd(profile)));
ASSERT_TRUE(loaded_info.Equals(saved_info));
// Save more methods.
for (uint16_t i = 0; i < 100; i++) {
ASSERT_TRUE(AddMethod("dex_location1", /* checksum */ 1, /* method_idx */ i, &saved_info));
ASSERT_TRUE(AddMethod("dex_location2", /* checksum */ 2, /* method_idx */ i, &saved_info));
ASSERT_TRUE(AddMethod("dex_location3", /* checksum */ 3, /* method_idx */ i, &saved_info));
}
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_TRUE(saved_info.Save(GetFd(profile)));
ASSERT_EQ(0, profile.GetFile()->Flush());
// Check that we get back everything we saved.
ProfileCompilationInfo loaded_info2;
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_TRUE(loaded_info2.Load(GetFd(profile)));
ASSERT_TRUE(loaded_info2.Equals(saved_info));
}
TEST_F(ProfileCompilationInfoTest, AddMethodsAndClassesFail) {
ScratchFile profile;
ProfileCompilationInfo info;
ASSERT_TRUE(AddMethod("dex_location", /* checksum */ 1, /* method_idx */ 1, &info));
// Trying to add info for an existing file but with a different checksum.
ASSERT_FALSE(AddMethod("dex_location", /* checksum */ 2, /* method_idx */ 2, &info));
}
TEST_F(ProfileCompilationInfoTest, MergeFail) {
ScratchFile profile;
ProfileCompilationInfo info1;
ASSERT_TRUE(AddMethod("dex_location", /* checksum */ 1, /* method_idx */ 1, &info1));
// Use the same file, change the checksum.
ProfileCompilationInfo info2;
ASSERT_TRUE(AddMethod("dex_location", /* checksum */ 2, /* method_idx */ 2, &info2));
ASSERT_FALSE(info1.MergeWith(info2));
}
TEST_F(ProfileCompilationInfoTest, SaveMaxMethods) {
ScratchFile profile;
ProfileCompilationInfo saved_info;
// Save the maximum number of methods
for (uint16_t i = 0; i < std::numeric_limits<uint16_t>::max(); i++) {
ASSERT_TRUE(AddMethod("dex_location1", /* checksum */ 1, /* method_idx */ i, &saved_info));
ASSERT_TRUE(AddMethod("dex_location2", /* checksum */ 2, /* method_idx */ i, &saved_info));
}
// Save the maximum number of classes
for (uint16_t i = 0; i < std::numeric_limits<uint16_t>::max(); i++) {
ASSERT_TRUE(AddClass("dex_location1", /* checksum */ 1, dex::TypeIndex(i), &saved_info));
ASSERT_TRUE(AddClass("dex_location2", /* checksum */ 2, dex::TypeIndex(i), &saved_info));
}
ASSERT_TRUE(saved_info.Save(GetFd(profile)));
ASSERT_EQ(0, profile.GetFile()->Flush());
// Check that we get back what we saved.
ProfileCompilationInfo loaded_info;
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_TRUE(loaded_info.Load(GetFd(profile)));
ASSERT_TRUE(loaded_info.Equals(saved_info));
}
TEST_F(ProfileCompilationInfoTest, SaveEmpty) {
ScratchFile profile;
ProfileCompilationInfo saved_info;
ASSERT_TRUE(saved_info.Save(GetFd(profile)));
ASSERT_EQ(0, profile.GetFile()->Flush());
// Check that we get back what we saved.
ProfileCompilationInfo loaded_info;
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_TRUE(loaded_info.Load(GetFd(profile)));
ASSERT_TRUE(loaded_info.Equals(saved_info));
}
TEST_F(ProfileCompilationInfoTest, LoadEmpty) {
ScratchFile profile;
ProfileCompilationInfo empty_info;
ProfileCompilationInfo loaded_info;
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_TRUE(loaded_info.Load(GetFd(profile)));
ASSERT_TRUE(loaded_info.Equals(empty_info));
}
TEST_F(ProfileCompilationInfoTest, BadMagic) {
ScratchFile profile;
uint8_t buffer[] = { 1, 2, 3, 4 };
ASSERT_TRUE(profile.GetFile()->WriteFully(buffer, sizeof(buffer)));
ProfileCompilationInfo loaded_info;
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_FALSE(loaded_info.Load(GetFd(profile)));
}
TEST_F(ProfileCompilationInfoTest, BadVersion) {
ScratchFile profile;
ASSERT_TRUE(profile.GetFile()->WriteFully(
ProfileCompilationInfo::kProfileMagic, kProfileMagicSize));
uint8_t version[] = { 'v', 'e', 'r', 's', 'i', 'o', 'n' };
ASSERT_TRUE(profile.GetFile()->WriteFully(version, sizeof(version)));
ASSERT_EQ(0, profile.GetFile()->Flush());
ProfileCompilationInfo loaded_info;
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_FALSE(loaded_info.Load(GetFd(profile)));
}
TEST_F(ProfileCompilationInfoTest, Incomplete) {
ScratchFile profile;
ASSERT_TRUE(profile.GetFile()->WriteFully(
ProfileCompilationInfo::kProfileMagic, kProfileMagicSize));
ASSERT_TRUE(profile.GetFile()->WriteFully(
ProfileCompilationInfo::kProfileVersion, kProfileVersionSize));
// Write that we have at least one line.
uint8_t line_number[] = { 0, 1 };
ASSERT_TRUE(profile.GetFile()->WriteFully(line_number, sizeof(line_number)));
ASSERT_EQ(0, profile.GetFile()->Flush());
ProfileCompilationInfo loaded_info;
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_FALSE(loaded_info.Load(GetFd(profile)));
}
TEST_F(ProfileCompilationInfoTest, TooLongDexLocation) {
ScratchFile profile;
ASSERT_TRUE(profile.GetFile()->WriteFully(
ProfileCompilationInfo::kProfileMagic, kProfileMagicSize));
ASSERT_TRUE(profile.GetFile()->WriteFully(
ProfileCompilationInfo::kProfileVersion, kProfileVersionSize));
// Write that we have at least one line.
uint8_t line_number[] = { 0, 1 };
ASSERT_TRUE(profile.GetFile()->WriteFully(line_number, sizeof(line_number)));
// dex_location_size, methods_size, classes_size, checksum.
// Dex location size is too big and should be rejected.
uint8_t line[] = { 255, 255, 0, 1, 0, 1, 0, 0, 0, 0 };
ASSERT_TRUE(profile.GetFile()->WriteFully(line, sizeof(line)));
ASSERT_EQ(0, profile.GetFile()->Flush());
ProfileCompilationInfo loaded_info;
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_FALSE(loaded_info.Load(GetFd(profile)));
}
TEST_F(ProfileCompilationInfoTest, UnexpectedContent) {
ScratchFile profile;
ProfileCompilationInfo saved_info;
// Save the maximum number of methods
for (uint16_t i = 0; i < 10; i++) {
ASSERT_TRUE(AddMethod("dex_location1", /* checksum */ 1, /* method_idx */ i, &saved_info));
}
ASSERT_TRUE(saved_info.Save(GetFd(profile)));
uint8_t random_data[] = { 1, 2, 3};
ASSERT_TRUE(profile.GetFile()->WriteFully(random_data, sizeof(random_data)));
ASSERT_EQ(0, profile.GetFile()->Flush());
// Check that we fail because of unexpected data at the end of the file.
ProfileCompilationInfo loaded_info;
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_FALSE(loaded_info.Load(GetFd(profile)));
}
TEST_F(ProfileCompilationInfoTest, SaveInlineCaches) {
ScratchFile profile;
ProfileCompilationInfo saved_info;
ProfileCompilationInfo::OfflineProfileMethodInfo pmi = GetOfflineProfileMethodInfo();
// Add methods with inline caches.
for (uint16_t method_idx = 0; method_idx < 10; method_idx++) {
// Add a method which is part of the same dex file as one of the
// class from the inline caches.
ASSERT_TRUE(AddMethod("dex_location1", /* checksum */ 1, method_idx, pmi, &saved_info));
// Add a method which is outside the set of dex files.
ASSERT_TRUE(AddMethod("dex_location4", /* checksum */ 4, method_idx, pmi, &saved_info));
}
ASSERT_TRUE(saved_info.Save(GetFd(profile)));
ASSERT_EQ(0, profile.GetFile()->Flush());
// Check that we get back what we saved.
ProfileCompilationInfo loaded_info;
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_TRUE(loaded_info.Load(GetFd(profile)));
ASSERT_TRUE(loaded_info.Equals(saved_info));
std::unique_ptr<ProfileCompilationInfo::OfflineProfileMethodInfo> loaded_pmi1 =
loaded_info.GetMethod("dex_location1", /* checksum */ 1, /* method_idx */ 3);
ASSERT_TRUE(loaded_pmi1 != nullptr);
ASSERT_TRUE(*loaded_pmi1 == pmi);
std::unique_ptr<ProfileCompilationInfo::OfflineProfileMethodInfo> loaded_pmi2 =
loaded_info.GetMethod("dex_location4", /* checksum */ 4, /* method_idx */ 3);
ASSERT_TRUE(loaded_pmi2 != nullptr);
ASSERT_TRUE(*loaded_pmi2 == pmi);
}
TEST_F(ProfileCompilationInfoTest, MegamorphicInlineCaches) {
ScratchFile profile;
ProfileCompilationInfo saved_info;
ProfileCompilationInfo::OfflineProfileMethodInfo pmi = GetOfflineProfileMethodInfo();
// Add methods with inline caches.
for (uint16_t method_idx = 0; method_idx < 10; method_idx++) {
ASSERT_TRUE(AddMethod("dex_location1", /* checksum */ 1, method_idx, pmi, &saved_info));
}
ASSERT_TRUE(saved_info.Save(GetFd(profile)));
ASSERT_EQ(0, profile.GetFile()->Flush());
// Make the inline caches megamorphic and add them to the profile again.
ProfileCompilationInfo saved_info_extra;
ProfileCompilationInfo::OfflineProfileMethodInfo pmi_extra = GetOfflineProfileMethodInfo();
MakeMegamorphic(&pmi_extra);
for (uint16_t method_idx = 0; method_idx < 10; method_idx++) {
ASSERT_TRUE(AddMethod("dex_location1", /* checksum */ 1, method_idx, pmi, &saved_info_extra));
}
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_TRUE(saved_info_extra.Save(GetFd(profile)));
ASSERT_EQ(0, profile.GetFile()->Flush());
// Merge the profiles so that we have the same view as the file.
ASSERT_TRUE(saved_info.MergeWith(saved_info_extra));
// Check that we get back what we saved.
ProfileCompilationInfo loaded_info;
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_TRUE(loaded_info.Load(GetFd(profile)));
ASSERT_TRUE(loaded_info.Equals(saved_info));
std::unique_ptr<ProfileCompilationInfo::OfflineProfileMethodInfo> loaded_pmi1 =
loaded_info.GetMethod("dex_location1", /* checksum */ 1, /* method_idx */ 3);
ASSERT_TRUE(loaded_pmi1 != nullptr);
ASSERT_TRUE(*loaded_pmi1 == pmi_extra);
}
TEST_F(ProfileCompilationInfoTest, MissingTypesInlineCaches) {
ScratchFile profile;
ProfileCompilationInfo saved_info;
ProfileCompilationInfo::OfflineProfileMethodInfo pmi = GetOfflineProfileMethodInfo();
// Add methods with inline caches.
for (uint16_t method_idx = 0; method_idx < 10; method_idx++) {
ASSERT_TRUE(AddMethod("dex_location1", /* checksum */ 1, method_idx, pmi, &saved_info));
}
ASSERT_TRUE(saved_info.Save(GetFd(profile)));
ASSERT_EQ(0, profile.GetFile()->Flush());
// Make some inline caches megamorphic and add them to the profile again.
ProfileCompilationInfo saved_info_extra;
ProfileCompilationInfo::OfflineProfileMethodInfo pmi_extra = GetOfflineProfileMethodInfo();
MakeMegamorphic(&pmi_extra);
for (uint16_t method_idx = 5; method_idx < 10; method_idx++) {
ASSERT_TRUE(AddMethod("dex_location1", /* checksum */ 1, method_idx, pmi, &saved_info_extra));
}
// Mark all inline caches with missing types and add them to the profile again.
// This will verify that all inline caches (megamorphic or not) should be marked as missing types.
ProfileCompilationInfo::OfflineProfileMethodInfo missing_types = GetOfflineProfileMethodInfo();
SetIsMissingTypes(&missing_types);
for (uint16_t method_idx = 0; method_idx < 10; method_idx++) {
ASSERT_TRUE(AddMethod("dex_location1", /* checksum */ 1, method_idx, pmi, &saved_info_extra));
}
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_TRUE(saved_info_extra.Save(GetFd(profile)));
ASSERT_EQ(0, profile.GetFile()->Flush());
// Merge the profiles so that we have the same view as the file.
ASSERT_TRUE(saved_info.MergeWith(saved_info_extra));
// Check that we get back what we saved.
ProfileCompilationInfo loaded_info;
ASSERT_TRUE(profile.GetFile()->ResetOffset());
ASSERT_TRUE(loaded_info.Load(GetFd(profile)));
ASSERT_TRUE(loaded_info.Equals(saved_info));
std::unique_ptr<ProfileCompilationInfo::OfflineProfileMethodInfo> loaded_pmi1 =
loaded_info.GetMethod("dex_location1", /* checksum */ 1, /* method_idx */ 3);
ASSERT_TRUE(loaded_pmi1 != nullptr);
ASSERT_TRUE(*loaded_pmi1 == pmi_extra);
}
TEST_F(ProfileCompilationInfoTest, SaveArtMethodsWithInlineCaches) {
ScratchFile profile;
Thread* self = Thread::Current();
jobject class_loader;
{
ScopedObjectAccess soa(self);
class_loader = LoadDex("ProfileTestMultiDex");
}
ASSERT_NE(class_loader, nullptr);
// Save virtual methods from Main.
std::set<DexCacheResolvedClasses> resolved_classes;
std::vector<ArtMethod*> main_methods = GetVirtualMethods(class_loader, "LMain;");
SafeMap<ArtMethod*, ProfileMethodInfo> profile_methods_map;
ASSERT_TRUE(SaveProfilingInfoWithFakeInlineCaches(
profile.GetFilename(), main_methods, &profile_methods_map));
// Check that what we saved is in the profile.
ProfileCompilationInfo info;
ASSERT_TRUE(info.Load(GetFd(profile)));
ASSERT_EQ(info.GetNumberOfMethods(), main_methods.size());
{
ScopedObjectAccess soa(self);
for (ArtMethod* m : main_methods) {
ASSERT_TRUE(
info.GetMethodHotness(MethodReference(m->GetDexFile(), m->GetDexMethodIndex())).IsHot());
const ProfileMethodInfo& pmi = profile_methods_map.find(m)->second;
std::unique_ptr<ProfileCompilationInfo::OfflineProfileMethodInfo> offline_pmi =
info.GetMethod(m->GetDexFile()->GetLocation(),
m->GetDexFile()->GetLocationChecksum(),
m->GetDexMethodIndex());
ASSERT_TRUE(offline_pmi != nullptr);
ProfileCompilationInfo::OfflineProfileMethodInfo converted_pmi =
ConvertProfileMethodInfo(pmi);
ASSERT_EQ(converted_pmi, *offline_pmi);
}
}
}
TEST_F(ProfileCompilationInfoTest, InvalidChecksumInInlineCache) {
ScratchFile profile;
ProfileCompilationInfo info;
ProfileCompilationInfo::OfflineProfileMethodInfo pmi1 = GetOfflineProfileMethodInfo();
ProfileCompilationInfo::OfflineProfileMethodInfo pmi2 = GetOfflineProfileMethodInfo();
// Modify the checksum to trigger a mismatch.
pmi2.dex_references[0].dex_checksum++;
ASSERT_TRUE(AddMethod("dex_location1", /* checksum */ 1, /*method_idx*/ 0, pmi1, &info));
ASSERT_FALSE(AddMethod("dex_location2", /* checksum */ 2, /*method_idx*/ 0, pmi2, &info));
}
// Verify that profiles behave correctly even if the methods are added in a different
// order and with a different dex profile indices for the dex files.
TEST_F(ProfileCompilationInfoTest, MergeInlineCacheTriggerReindex) {
ScratchFile profile;
ProfileCompilationInfo info;
ProfileCompilationInfo info_reindexed;
ProfileCompilationInfo::InlineCacheMap* ic_map = CreateInlineCacheMap();
ProfileCompilationInfo::OfflineProfileMethodInfo pmi(ic_map);
pmi.dex_references.emplace_back("dex_location1", /* checksum */ 1, kMaxMethodIds);
pmi.dex_references.emplace_back("dex_location2", /* checksum */ 2, kMaxMethodIds);
for (uint16_t dex_pc = 1; dex_pc < 5; dex_pc++) {
ProfileCompilationInfo::DexPcData dex_pc_data(arena_.get());
dex_pc_data.AddClass(0, dex::TypeIndex(0));
dex_pc_data.AddClass(1, dex::TypeIndex(1));
ic_map->Put(dex_pc, dex_pc_data);
}
ProfileCompilationInfo::InlineCacheMap* ic_map_reindexed = CreateInlineCacheMap();
ProfileCompilationInfo::OfflineProfileMethodInfo pmi_reindexed(ic_map_reindexed);
pmi_reindexed.dex_references.emplace_back("dex_location2", /* checksum */ 2, kMaxMethodIds);
pmi_reindexed.dex_references.emplace_back("dex_location1", /* checksum */ 1, kMaxMethodIds);
for (uint16_t dex_pc = 1; dex_pc < 5; dex_pc++) {
ProfileCompilationInfo::DexPcData dex_pc_data(arena_.get());
dex_pc_data.AddClass(1, dex::TypeIndex(0));
dex_pc_data.AddClass(0, dex::TypeIndex(1));
ic_map_reindexed->Put(dex_pc, dex_pc_data);
}
// Profile 1 and Profile 2 get the same methods but in different order.
// This will trigger a different dex numbers.
for (uint16_t method_idx = 0; method_idx < 10; method_idx++) {
ASSERT_TRUE(AddMethod("dex_location1", /* checksum */ 1, method_idx, pmi, &info));
ASSERT_TRUE(AddMethod("dex_location2", /* checksum */ 2, method_idx, pmi, &info));
}
for (uint16_t method_idx = 0; method_idx < 10; method_idx++) {
ASSERT_TRUE(AddMethod(
"dex_location2", /* checksum */ 2, method_idx, pmi_reindexed, &info_reindexed));
ASSERT_TRUE(AddMethod(
"dex_location1", /* checksum */ 1, method_idx, pmi_reindexed, &info_reindexed));
}
ProfileCompilationInfo info_backup;
info_backup.MergeWith(info);
ASSERT_TRUE(info.MergeWith(info_reindexed));
// Merging should have no effect as we're adding the exact same stuff.
ASSERT_TRUE(info.Equals(info_backup));
for (uint16_t method_idx = 0; method_idx < 10; method_idx++) {
std::unique_ptr<ProfileCompilationInfo::OfflineProfileMethodInfo> loaded_pmi1 =
info.GetMethod("dex_location1", /* checksum */ 1, method_idx);
ASSERT_TRUE(loaded_pmi1 != nullptr);
ASSERT_TRUE(*loaded_pmi1 == pmi);
std::unique_ptr<ProfileCompilationInfo::OfflineProfileMethodInfo> loaded_pmi2 =
info.GetMethod("dex_location2", /* checksum */ 2, method_idx);
ASSERT_TRUE(loaded_pmi2 != nullptr);
ASSERT_TRUE(*loaded_pmi2 == pmi);
}
}
TEST_F(ProfileCompilationInfoTest, AddMoreDexFileThanLimit) {
ProfileCompilationInfo info;
// Save a few methods.
for (uint16_t i = 0; i < std::numeric_limits<uint8_t>::max(); i++) {
std::string dex_location = std::to_string(i);
ASSERT_TRUE(AddMethod(dex_location, /* checksum */ 1, /* method_idx */ i, &info));
}
// We only support at most 255 dex files.
ASSERT_FALSE(AddMethod(
/*dex_location*/ "256", /* checksum */ 1, /* method_idx */ 0, &info));
}
TEST_F(ProfileCompilationInfoTest, MegamorphicInlineCachesMerge) {
// Create a megamorphic inline cache.
ProfileCompilationInfo::InlineCacheMap* ic_map = CreateInlineCacheMap();
ProfileCompilationInfo::OfflineProfileMethodInfo pmi(ic_map);
pmi.dex_references.emplace_back("dex_location1", /* checksum */ 1, kMaxMethodIds);
ProfileCompilationInfo::DexPcData dex_pc_data(arena_.get());
dex_pc_data.SetIsMegamorphic();
ic_map->Put(/*dex_pc*/ 0, dex_pc_data);
ProfileCompilationInfo info_megamorphic;
ASSERT_TRUE(AddMethod("dex_location1",
/*checksum*/ 1,
/*method_idx*/ 0,
pmi,
&info_megamorphic));
// Create a profile with no inline caches (for the same method).
ProfileCompilationInfo info_no_inline_cache;
ASSERT_TRUE(AddMethod("dex_location1",
/*checksum*/ 1,
/*method_idx*/ 0,
&info_no_inline_cache));
// Merge the megamorphic cache into the empty one.
ASSERT_TRUE(info_no_inline_cache.MergeWith(info_megamorphic));
ScratchFile profile;
// Saving profile should work without crashing (b/35644850).
ASSERT_TRUE(info_no_inline_cache.Save(GetFd(profile)));
}
TEST_F(ProfileCompilationInfoTest, MissingTypesInlineCachesMerge) {
// Create an inline cache with missing types
ProfileCompilationInfo::InlineCacheMap* ic_map = CreateInlineCacheMap();
ProfileCompilationInfo::OfflineProfileMethodInfo pmi(ic_map);
pmi.dex_references.emplace_back("dex_location1", /* checksum */ 1, kMaxMethodIds);
ProfileCompilationInfo::DexPcData dex_pc_data(arena_.get());
dex_pc_data.SetIsMissingTypes();
ic_map->Put(/*dex_pc*/ 0, dex_pc_data);
ProfileCompilationInfo info_megamorphic;
ASSERT_TRUE(AddMethod("dex_location1",
/*checksum*/ 1,
/*method_idx*/ 0,
pmi,
&info_megamorphic));
// Create a profile with no inline caches (for the same method).
ProfileCompilationInfo info_no_inline_cache;
ASSERT_TRUE(AddMethod("dex_location1",
/*checksum*/ 1,
/*method_idx*/ 0,
&info_no_inline_cache));
// Merge the missing type cache into the empty one.
// Everything should be saved without errors.
ASSERT_TRUE(info_no_inline_cache.MergeWith(info_megamorphic));
ScratchFile profile;
ASSERT_TRUE(info_no_inline_cache.Save(GetFd(profile)));
}
TEST_F(ProfileCompilationInfoTest, LoadShouldClearExistingDataFromProfiles) {
ScratchFile profile;
ProfileCompilationInfo saved_info;
// Save a few methods.
for (uint16_t i = 0; i < 10; i++) {
ASSERT_TRUE(AddMethod("dex_location1", /* checksum */ 1, /* method_idx */ i, &saved_info));
}
ASSERT_TRUE(saved_info.Save(GetFd(profile)));
ASSERT_EQ(0, profile.GetFile()->Flush());
ASSERT_TRUE(profile.GetFile()->ResetOffset());
// Add a bunch of methods to test_info.
ProfileCompilationInfo test_info;
for (uint16_t i = 0; i < 10; i++) {
ASSERT_TRUE(AddMethod("dex_location2", /* checksum */ 2, /* method_idx */ i, &test_info));
}
// Attempt to load the saved profile into test_info.
// This should fail since the test_info already contains data and the load would overwrite it.
ASSERT_FALSE(test_info.Load(GetFd(profile)));
}
TEST_F(ProfileCompilationInfoTest, SampledMethodsTest) {
ProfileCompilationInfo test_info;
static constexpr size_t kNumMethods = 1000;
static constexpr size_t kChecksum1 = 1234;
static constexpr size_t kChecksum2 = 4321;
static const std::string kDex1 = "dex1";
static const std::string kDex2 = "dex2";
test_info.AddMethodIndex(Hotness::kFlagStartup, kDex1, kChecksum1, 1, kNumMethods);
test_info.AddMethodIndex(Hotness::kFlagPostStartup, kDex1, kChecksum1, 5, kNumMethods);
test_info.AddMethodIndex(Hotness::kFlagStartup, kDex2, kChecksum2, 2, kNumMethods);
test_info.AddMethodIndex(Hotness::kFlagPostStartup, kDex2, kChecksum2, 4, kNumMethods);
auto run_test = [](const ProfileCompilationInfo& info) {
EXPECT_FALSE(info.GetMethodHotness(kDex1, kChecksum1, 2).IsInProfile());
EXPECT_FALSE(info.GetMethodHotness(kDex1, kChecksum1, 4).IsInProfile());
EXPECT_TRUE(info.GetMethodHotness(kDex1, kChecksum1, 1).IsStartup());
EXPECT_FALSE(info.GetMethodHotness(kDex1, kChecksum1, 3).IsStartup());
EXPECT_TRUE(info.GetMethodHotness(kDex1, kChecksum1, 5).IsPostStartup());
EXPECT_FALSE(info.GetMethodHotness(kDex1, kChecksum1, 6).IsStartup());
EXPECT_TRUE(info.GetMethodHotness(kDex2, kChecksum2, 2).IsStartup());
EXPECT_TRUE(info.GetMethodHotness(kDex2, kChecksum2, 4).IsPostStartup());
};
run_test(test_info);
// Save the profile.
ScratchFile profile;
ASSERT_TRUE(test_info.Save(GetFd(profile)));
ASSERT_EQ(0, profile.GetFile()->Flush());
ASSERT_TRUE(profile.GetFile()->ResetOffset());
// Load the profile and make sure we can read the data and it matches what we expect.
ProfileCompilationInfo loaded_info;
ASSERT_TRUE(loaded_info.Load(GetFd(profile)));
run_test(loaded_info);
// Test that the bitmap gets merged properly.
EXPECT_FALSE(test_info.GetMethodHotness(kDex1, kChecksum1, 11).IsStartup());
{
ProfileCompilationInfo merge_info;
merge_info.AddMethodIndex(Hotness::kFlagStartup, kDex1, kChecksum1, 11, kNumMethods);
test_info.MergeWith(merge_info);
}
EXPECT_TRUE(test_info.GetMethodHotness(kDex1, kChecksum1, 11).IsStartup());
// Test bulk adding.
{
std::unique_ptr<const DexFile> dex(OpenTestDexFile("ManyMethods"));
ProfileCompilationInfo info;
std::vector<uint16_t> hot_methods = {1, 3, 5};
std::vector<uint16_t> startup_methods = {1, 2};
std::vector<uint16_t> post_methods = {0, 2, 6};
ASSERT_GE(dex->NumMethodIds(), 7u);
info.AddMethodsForDex(static_cast<Hotness::Flag>(Hotness::kFlagHot | Hotness::kFlagStartup),
dex.get(),
hot_methods.begin(),
hot_methods.end());
info.AddMethodsForDex(Hotness::kFlagStartup,
dex.get(),
startup_methods.begin(),
startup_methods.end());
info.AddMethodsForDex(Hotness::kFlagPostStartup,
dex.get(),
post_methods.begin(),
post_methods.end());
for (uint16_t id : hot_methods) {
EXPECT_TRUE(info.GetMethodHotness(MethodReference(dex.get(), id)).IsHot());
EXPECT_TRUE(info.GetMethodHotness(MethodReference(dex.get(), id)).IsStartup());
}
for (uint16_t id : startup_methods) {
EXPECT_TRUE(info.GetMethodHotness(MethodReference(dex.get(), id)).IsStartup());
}
for (uint16_t id : post_methods) {
EXPECT_TRUE(info.GetMethodHotness(MethodReference(dex.get(), id)).IsPostStartup());
}
EXPECT_TRUE(info.GetMethodHotness(MethodReference(dex.get(), 6)).IsPostStartup());
// Check that methods that shouldn't have been touched are OK.
EXPECT_TRUE(info.GetMethodHotness(MethodReference(dex.get(), 0)).IsInProfile());
EXPECT_FALSE(info.GetMethodHotness(MethodReference(dex.get(), 4)).IsInProfile());
EXPECT_FALSE(info.GetMethodHotness(MethodReference(dex.get(), 7)).IsInProfile());
EXPECT_FALSE(info.GetMethodHotness(MethodReference(dex.get(), 1)).IsPostStartup());
EXPECT_FALSE(info.GetMethodHotness(MethodReference(dex.get(), 4)).IsStartup());
EXPECT_FALSE(info.GetMethodHotness(MethodReference(dex.get(), 6)).IsStartup());
}
}
} // namespace art
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