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/*
* Copyright (C) 2011 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 "image_test.h"
namespace art {
namespace linker {
class ImageWriteReadTest : public ImageTest {
protected:
void TestWriteRead(ImageHeader::StorageMode storage_mode, uint32_t max_image_block_size);
};
void ImageWriteReadTest::TestWriteRead(ImageHeader::StorageMode storage_mode,
uint32_t max_image_block_size) {
CompilationHelper helper;
Compile(storage_mode, max_image_block_size, /*out*/ helper);
std::vector<uint64_t> image_file_sizes;
for (ScratchFile& image_file : helper.image_files) {
std::unique_ptr<File> file(OS::OpenFileForReading(image_file.GetFilename().c_str()));
ASSERT_TRUE(file.get() != nullptr);
ImageHeader image_header;
ASSERT_EQ(file->ReadFully(&image_header, sizeof(image_header)), true);
ASSERT_TRUE(image_header.IsValid());
const auto& bitmap_section = image_header.GetImageBitmapSection();
ASSERT_GE(bitmap_section.Offset(), sizeof(image_header));
ASSERT_NE(0U, bitmap_section.Size());
gc::Heap* heap = Runtime::Current()->GetHeap();
ASSERT_TRUE(heap->HaveContinuousSpaces());
gc::space::ContinuousSpace* space = heap->GetNonMovingSpace();
ASSERT_FALSE(space->IsImageSpace());
ASSERT_TRUE(space != nullptr);
ASSERT_TRUE(space->IsMallocSpace());
image_file_sizes.push_back(file->GetLength());
}
// Need to delete the compiler since it has worker threads which are attached to runtime.
compiler_driver_.reset();
// Tear down old runtime before making a new one, clearing out misc state.
// Remove the reservation of the memory for use to load the image.
// Need to do this before we reset the runtime.
UnreserveImageSpace();
helper.extra_dex_files.clear();
runtime_.reset();
java_lang_dex_file_ = nullptr;
MemMap::Init();
RuntimeOptions options;
options.emplace_back(GetClassPathOption("-Xbootclasspath:", GetLibCoreDexFileNames()), nullptr);
options.emplace_back(
GetClassPathOption("-Xbootclasspath-locations:", GetLibCoreDexLocations()), nullptr);
std::string image("-Ximage:");
image.append(helper.image_locations[0].GetFilename());
options.push_back(std::make_pair(image.c_str(), static_cast<void*>(nullptr)));
// By default the compiler this creates will not include patch information.
options.push_back(std::make_pair("-Xnorelocate", nullptr));
if (!Runtime::Create(options, false)) {
LOG(FATAL) << "Failed to create runtime";
return;
}
runtime_.reset(Runtime::Current());
// Runtime::Create acquired the mutator_lock_ that is normally given away when we Runtime::Start,
// give it away now and then switch to a more managable ScopedObjectAccess.
Thread::Current()->TransitionFromRunnableToSuspended(kNative);
ScopedObjectAccess soa(Thread::Current());
ASSERT_TRUE(runtime_.get() != nullptr);
class_linker_ = runtime_->GetClassLinker();
gc::Heap* heap = Runtime::Current()->GetHeap();
ASSERT_TRUE(heap->HasBootImageSpace());
ASSERT_TRUE(heap->GetNonMovingSpace()->IsMallocSpace());
// We loaded the runtime with an explicit image, so it must exist.
ASSERT_EQ(heap->GetBootImageSpaces().size(), image_file_sizes.size());
const HashSet<std::string>& image_classes = compiler_options_->GetImageClasses();
for (size_t i = 0; i < helper.dex_file_locations.size(); ++i) {
std::unique_ptr<const DexFile> dex(
LoadExpectSingleDexFile(helper.dex_file_locations[i].c_str()));
ASSERT_TRUE(dex != nullptr);
uint64_t image_file_size = image_file_sizes[i];
gc::space::ImageSpace* image_space = heap->GetBootImageSpaces()[i];
ASSERT_TRUE(image_space != nullptr);
if (storage_mode == ImageHeader::kStorageModeUncompressed) {
// Uncompressed, image should be smaller than file.
ASSERT_LE(image_space->GetImageHeader().GetImageSize(), image_file_size);
} else if (image_file_size > 16 * KB) {
// Compressed, file should be smaller than image. Not really valid for small images.
ASSERT_LE(image_file_size, image_space->GetImageHeader().GetImageSize());
// TODO: Actually validate the blocks, this is hard since the blocks are not copied over for
// compressed images. Add kPageSize since image_size is rounded up to this.
ASSERT_GT(image_space->GetImageHeader().GetBlockCount() * max_image_block_size,
image_space->GetImageHeader().GetImageSize() - kPageSize);
}
image_space->VerifyImageAllocations();
uint8_t* image_begin = image_space->Begin();
uint8_t* image_end = image_space->End();
if (i == 0) {
// This check is only valid for image 0.
CHECK_EQ(kRequestedImageBase, reinterpret_cast<uintptr_t>(image_begin));
}
for (size_t j = 0; j < dex->NumClassDefs(); ++j) {
const dex::ClassDef& class_def = dex->GetClassDef(j);
const char* descriptor = dex->GetClassDescriptor(class_def);
ObjPtr<mirror::Class> klass = class_linker_->FindSystemClass(soa.Self(), descriptor);
EXPECT_TRUE(klass != nullptr) << descriptor;
uint8_t* raw_klass = reinterpret_cast<uint8_t*>(klass.Ptr());
if (image_classes.find(std::string_view(descriptor)) == image_classes.end()) {
EXPECT_TRUE(raw_klass >= image_end || raw_klass < image_begin) << descriptor;
} else {
// Image classes should be located inside the image.
EXPECT_LT(image_begin, raw_klass) << descriptor;
EXPECT_LT(raw_klass, image_end) << descriptor;
}
EXPECT_TRUE(Monitor::IsValidLockWord(klass->GetLockWord(false)));
}
}
}
TEST_F(ImageWriteReadTest, WriteReadUncompressed) {
TestWriteRead(ImageHeader::kStorageModeUncompressed,
/*max_image_block_size=*/std::numeric_limits<uint32_t>::max());
}
TEST_F(ImageWriteReadTest, WriteReadLZ4) {
TestWriteRead(ImageHeader::kStorageModeLZ4,
/*max_image_block_size=*/std::numeric_limits<uint32_t>::max());
}
TEST_F(ImageWriteReadTest, WriteReadLZ4HC) {
TestWriteRead(ImageHeader::kStorageModeLZ4HC,
/*max_image_block_size=*/std::numeric_limits<uint32_t>::max());
}
TEST_F(ImageWriteReadTest, WriteReadLZ4HCKBBlock) {
TestWriteRead(ImageHeader::kStorageModeLZ4HC, /*max_image_block_size=*/KB);
}
} // namespace linker
} // namespace art
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