continue;
}
const DexFile* dex_file = dex_cache->GetDexFile();
+ CHECK(dex_file_oat_index_map_.find(dex_file) != dex_file_oat_index_map_.end())
+ << "Dex cache should have been pruned " << dex_file->GetLocation()
+ << "; possibly in class path";
DexCacheArraysLayout layout(target_ptr_size_, dex_file);
DCHECK(layout.Valid());
size_t oat_index = GetOatIndexForDexCache(dex_cache);
for (ImageInfo& image_info : image_infos_) {
ImageSection unused_sections[ImageHeader::kSectionCount];
const size_t length = RoundUp(
- image_info.CreateImageSections(target_ptr_size_, unused_sections),
- kPageSize);
+ image_info.CreateImageSections(unused_sections), kPageSize);
std::string error_msg;
image_info.image_.reset(MemMap::MapAnonymous("image writer image",
ClassLinker* class_linker = runtime->GetClassLinker();
Thread* self = Thread::Current();
+ // Clear class table strong roots so that dex caches can get pruned. We require pruning the class
+ // path dex caches.
+ class_linker->ClearClassTableStrongRoots();
+
// Make a list of classes we would like to prune.
NonImageClassesVisitor visitor(this);
class_linker->VisitClasses(&visitor);
for (const ClassLinker::DexCacheData& data : class_linker->GetDexCachesData()) {
mirror::DexCache* dex_cache =
down_cast<mirror::DexCache*>(self->DecodeJObject(data.weak_root));
+ if (dex_cache == nullptr) {
+ continue;
+ }
const DexFile* dex_file = dex_cache->GetDexFile();
if (!IsInBootImage(dex_cache)) {
dex_cache_count += image_dex_files.find(dex_file) != image_dex_files.end() ? 1u : 0u;
for (const ClassLinker::DexCacheData& data : class_linker->GetDexCachesData()) {
mirror::DexCache* dex_cache =
down_cast<mirror::DexCache*>(self->DecodeJObject(data.weak_root));
+ if (dex_cache == nullptr) {
+ continue;
+ }
const DexFile* dex_file = dex_cache->GetDexFile();
if (!IsInBootImage(dex_cache)) {
non_image_dex_caches += image_dex_files.find(dex_file) != image_dex_files.end() ? 1u : 0u;
for (const ClassLinker::DexCacheData& data : class_linker->GetDexCachesData()) {
mirror::DexCache* dex_cache =
down_cast<mirror::DexCache*>(self->DecodeJObject(data.weak_root));
+ if (dex_cache == nullptr) {
+ continue;
+ }
const DexFile* dex_file = dex_cache->GetDexFile();
if (!IsInBootImage(dex_cache) && image_dex_files.find(dex_file) != image_dex_files.end()) {
dex_caches->Set<false>(i, dex_cache);
}
(any_dirty ? dirty_methods_ : clean_methods_) += num_methods;
}
+ // Assign offsets for all runtime methods in the IMT since these may hold conflict tables
+ // live.
+ if (as_klass->ShouldHaveImt()) {
+ ImTable* imt = as_klass->GetImt(target_ptr_size_);
+ for (size_t i = 0; i < ImTable::kSize; ++i) {
+ ArtMethod* imt_method = imt->Get(i, target_ptr_size_);
+ DCHECK(imt_method != nullptr);
+ if (imt_method->IsRuntimeMethod() &&
+ !IsInBootImage(imt_method) &&
+ !NativeRelocationAssigned(imt_method)) {
+ AssignMethodOffset(imt_method, kNativeObjectRelocationTypeRuntimeMethod, oat_index);
+ }
+ }
+ }
+
+ if (as_klass->ShouldHaveImt()) {
+ ImTable* imt = as_klass->GetImt(target_ptr_size_);
+ TryAssignImTableOffset(imt, oat_index);
+ }
} else if (h_obj->IsObjectArray()) {
// Walk elements of an object array.
int32_t length = h_obj->AsObjectArray<mirror::Object>()->GetLength();
}
}
+bool ImageWriter::NativeRelocationAssigned(void* ptr) const {
+ return native_object_relocations_.find(ptr) != native_object_relocations_.end();
+}
+
+void ImageWriter::TryAssignImTableOffset(ImTable* imt, size_t oat_index) {
+ // No offset, or already assigned.
+ if (imt == nullptr || IsInBootImage(imt) || NativeRelocationAssigned(imt)) {
+ return;
+ }
+ // If the method is a conflict method we also want to assign the conflict table offset.
+ ImageInfo& image_info = GetImageInfo(oat_index);
+ const size_t size = ImTable::SizeInBytes(target_ptr_size_);
+ native_object_relocations_.emplace(
+ imt,
+ NativeObjectRelocation {
+ oat_index,
+ image_info.bin_slot_sizes_[kBinImTable],
+ kNativeObjectRelocationTypeIMTable});
+ image_info.bin_slot_sizes_[kBinImTable] += size;
+}
+
+void ImageWriter::TryAssignConflictTableOffset(ImtConflictTable* table, size_t oat_index) {
+ // No offset, or already assigned.
+ if (table == nullptr || NativeRelocationAssigned(table)) {
+ return;
+ }
+ CHECK(!IsInBootImage(table));
+ // If the method is a conflict method we also want to assign the conflict table offset.
+ ImageInfo& image_info = GetImageInfo(oat_index);
+ const size_t size = table->ComputeSize(target_ptr_size_);
+ native_object_relocations_.emplace(
+ table,
+ NativeObjectRelocation {
+ oat_index,
+ image_info.bin_slot_sizes_[kBinIMTConflictTable],
+ kNativeObjectRelocationTypeIMTConflictTable});
+ image_info.bin_slot_sizes_[kBinIMTConflictTable] += size;
+}
+
void ImageWriter::AssignMethodOffset(ArtMethod* method,
NativeObjectRelocationType type,
size_t oat_index) {
DCHECK(!IsInBootImage(method));
- auto it = native_object_relocations_.find(method);
- CHECK(it == native_object_relocations_.end()) << "Method " << method << " already assigned "
+ CHECK(!NativeRelocationAssigned(method)) << "Method " << method << " already assigned "
<< PrettyMethod(method);
+ if (method->IsRuntimeMethod()) {
+ TryAssignConflictTableOffset(method->GetImtConflictTable(target_ptr_size_), oat_index);
+ }
ImageInfo& image_info = GetImageInfo(oat_index);
size_t& offset = image_info.bin_slot_sizes_[BinTypeForNativeRelocationType(type)];
native_object_relocations_.emplace(method, NativeObjectRelocation { oat_index, offset, type });
// know where image_roots is going to end up
image_objects_offset_begin_ = RoundUp(sizeof(ImageHeader), kObjectAlignment); // 64-bit-alignment
- // Clear any pre-existing monitors which may have been in the monitor words, assign bin slots.
- heap->VisitObjects(WalkFieldsCallback, this);
+ const size_t method_alignment = ArtMethod::Alignment(target_ptr_size_);
// Write the image runtime methods.
image_methods_[ImageHeader::kResolutionMethod] = runtime->GetResolutionMethod();
image_methods_[ImageHeader::kImtConflictMethod] = runtime->GetImtConflictMethod();
runtime->GetCalleeSaveMethod(Runtime::kRefsOnly);
image_methods_[ImageHeader::kRefsAndArgsSaveMethod] =
runtime->GetCalleeSaveMethod(Runtime::kRefsAndArgs);
-
- // Add room for fake length prefixed array for holding the image methods.
- const auto image_method_type = kNativeObjectRelocationTypeArtMethodArrayClean;
- auto it = native_object_relocations_.find(&image_method_array_);
- CHECK(it == native_object_relocations_.end());
- ImageInfo& default_image_info = GetImageInfo(GetDefaultOatIndex());
- size_t& offset =
- default_image_info.bin_slot_sizes_[BinTypeForNativeRelocationType(image_method_type)];
- if (!compile_app_image_) {
- native_object_relocations_.emplace(&image_method_array_,
- NativeObjectRelocation { GetDefaultOatIndex(), offset, image_method_type });
- }
- size_t method_alignment = ArtMethod::Alignment(target_ptr_size_);
- const size_t array_size = LengthPrefixedArray<ArtMethod>::ComputeSize(
- 0, ArtMethod::Size(target_ptr_size_), method_alignment);
- CHECK_ALIGNED_PARAM(array_size, method_alignment);
- offset += array_size;
+ // Visit image methods first to have the main runtime methods in the first image.
for (auto* m : image_methods_) {
CHECK(m != nullptr);
CHECK(m->IsRuntimeMethod());
DCHECK_EQ(compile_app_image_, IsInBootImage(m)) << "Trampolines should be in boot image";
if (!IsInBootImage(m)) {
- AssignMethodOffset(m, kNativeObjectRelocationTypeArtMethodClean, GetDefaultOatIndex());
+ AssignMethodOffset(m, kNativeObjectRelocationTypeRuntimeMethod, GetDefaultOatIndex());
}
}
+
+ // Clear any pre-existing monitors which may have been in the monitor words, assign bin slots.
+ heap->VisitObjects(WalkFieldsCallback, this);
+
// Calculate size of the dex cache arrays slot and prepare offsets.
PrepareDexCacheArraySlots();
for (ImageInfo& image_info : image_infos_) {
size_t bin_offset = image_objects_offset_begin_;
for (size_t i = 0; i != kBinSize; ++i) {
+ switch (i) {
+ case kBinArtMethodClean:
+ case kBinArtMethodDirty: {
+ bin_offset = RoundUp(bin_offset, method_alignment);
+ break;
+ }
+ case kBinImTable:
+ case kBinIMTConflictTable: {
+ bin_offset = RoundUp(bin_offset, target_ptr_size_);
+ break;
+ }
+ default: {
+ // Normal alignment.
+ }
+ }
image_info.bin_slot_offsets_[i] = bin_offset;
bin_offset += image_info.bin_slot_sizes_[i];
- if (i == kBinArtField) {
- static_assert(kBinArtField + 1 == kBinArtMethodClean, "Methods follow fields.");
- static_assert(alignof(ArtField) == 4u, "ArtField alignment is 4.");
- DCHECK_ALIGNED(bin_offset, 4u);
- DCHECK(method_alignment == 4u || method_alignment == 8u);
- bin_offset = RoundUp(bin_offset, method_alignment);
- }
}
// NOTE: There may be additional padding between the bin slots and the intern table.
DCHECK_EQ(image_info.image_end_,
image_info.image_begin_ = global_image_begin_ + image_offset;
image_info.image_offset_ = image_offset;
ImageSection unused_sections[ImageHeader::kSectionCount];
- image_info.image_size_ = RoundUp(
- image_info.CreateImageSections(target_ptr_size_, unused_sections),
- kPageSize);
+ image_info.image_size_ = RoundUp(image_info.CreateImageSections(unused_sections), kPageSize);
// There should be no gaps until the next image.
image_offset += image_info.image_size_;
}
// Note that image_info.image_end_ is left at end of used mirror object section.
}
-size_t ImageWriter::ImageInfo::CreateImageSections(size_t target_ptr_size,
- ImageSection* out_sections) const {
+size_t ImageWriter::ImageInfo::CreateImageSections(ImageSection* out_sections) const {
DCHECK(out_sections != nullptr);
+
+ // Do not round up any sections here that are represented by the bins since it will break
+ // offsets.
+
// Objects section
- auto* objects_section = &out_sections[ImageHeader::kSectionObjects];
+ ImageSection* objects_section = &out_sections[ImageHeader::kSectionObjects];
*objects_section = ImageSection(0u, image_end_);
- size_t cur_pos = objects_section->End();
+
// Add field section.
- auto* field_section = &out_sections[ImageHeader::kSectionArtFields];
- *field_section = ImageSection(cur_pos, bin_slot_sizes_[kBinArtField]);
+ ImageSection* field_section = &out_sections[ImageHeader::kSectionArtFields];
+ *field_section = ImageSection(bin_slot_offsets_[kBinArtField], bin_slot_sizes_[kBinArtField]);
CHECK_EQ(bin_slot_offsets_[kBinArtField], field_section->Offset());
- cur_pos = field_section->End();
- // Round up to the alignment the required by the method section.
- cur_pos = RoundUp(cur_pos, ArtMethod::Alignment(target_ptr_size));
+
// Add method section.
- auto* methods_section = &out_sections[ImageHeader::kSectionArtMethods];
- *methods_section = ImageSection(cur_pos,
- bin_slot_sizes_[kBinArtMethodClean] +
- bin_slot_sizes_[kBinArtMethodDirty]);
- CHECK_EQ(bin_slot_offsets_[kBinArtMethodClean], methods_section->Offset());
- cur_pos = methods_section->End();
+ ImageSection* methods_section = &out_sections[ImageHeader::kSectionArtMethods];
+ *methods_section = ImageSection(
+ bin_slot_offsets_[kBinArtMethodClean],
+ bin_slot_sizes_[kBinArtMethodClean] + bin_slot_sizes_[kBinArtMethodDirty]);
+
+ // IMT section.
+ ImageSection* imt_section = &out_sections[ImageHeader::kSectionImTables];
+ *imt_section = ImageSection(bin_slot_offsets_[kBinImTable], bin_slot_sizes_[kBinImTable]);
+
+ // Conflict tables section.
+ ImageSection* imt_conflict_tables_section = &out_sections[ImageHeader::kSectionIMTConflictTables];
+ *imt_conflict_tables_section = ImageSection(bin_slot_offsets_[kBinIMTConflictTable],
+ bin_slot_sizes_[kBinIMTConflictTable]);
+
+ // Runtime methods section.
+ ImageSection* runtime_methods_section = &out_sections[ImageHeader::kSectionRuntimeMethods];
+ *runtime_methods_section = ImageSection(bin_slot_offsets_[kBinRuntimeMethod],
+ bin_slot_sizes_[kBinRuntimeMethod]);
+
// Add dex cache arrays section.
- auto* dex_cache_arrays_section = &out_sections[ImageHeader::kSectionDexCacheArrays];
- *dex_cache_arrays_section = ImageSection(cur_pos, bin_slot_sizes_[kBinDexCacheArray]);
- CHECK_EQ(bin_slot_offsets_[kBinDexCacheArray], dex_cache_arrays_section->Offset());
- cur_pos = dex_cache_arrays_section->End();
+ ImageSection* dex_cache_arrays_section = &out_sections[ImageHeader::kSectionDexCacheArrays];
+ *dex_cache_arrays_section = ImageSection(bin_slot_offsets_[kBinDexCacheArray],
+ bin_slot_sizes_[kBinDexCacheArray]);
+
// Round up to the alignment the string table expects. See HashSet::WriteToMemory.
- cur_pos = RoundUp(cur_pos, sizeof(uint64_t));
+ size_t cur_pos = RoundUp(dex_cache_arrays_section->End(), sizeof(uint64_t));
// Calculate the size of the interned strings.
- auto* interned_strings_section = &out_sections[ImageHeader::kSectionInternedStrings];
+ ImageSection* interned_strings_section = &out_sections[ImageHeader::kSectionInternedStrings];
*interned_strings_section = ImageSection(cur_pos, intern_table_bytes_);
cur_pos = interned_strings_section->End();
// Round up to the alignment the class table expects. See HashSet::WriteToMemory.
cur_pos = RoundUp(cur_pos, sizeof(uint64_t));
// Calculate the size of the class table section.
- auto* class_table_section = &out_sections[ImageHeader::kSectionClassTable];
+ ImageSection* class_table_section = &out_sections[ImageHeader::kSectionClassTable];
*class_table_section = ImageSection(cur_pos, class_table_bytes_);
cur_pos = class_table_section->End();
// Image end goes right before the start of the image bitmap.
// Create the image sections.
ImageSection sections[ImageHeader::kSectionCount];
- const size_t image_end = image_info.CreateImageSections(target_ptr_size_, sections);
+ const size_t image_end = image_info.CreateImageSections(sections);
// Finally bitmap section.
const size_t bitmap_bytes = image_info.image_bitmap_->Size();
ImageWriter* const image_writer_;
};
+void ImageWriter::CopyAndFixupImTable(ImTable* orig, ImTable* copy) {
+ for (size_t i = 0; i < ImTable::kSize; ++i) {
+ ArtMethod* method = orig->Get(i, target_ptr_size_);
+ copy->Set(i, NativeLocationInImage(method), target_ptr_size_);
+ }
+}
+
+void ImageWriter::CopyAndFixupImtConflictTable(ImtConflictTable* orig, ImtConflictTable* copy) {
+ const size_t count = orig->NumEntries(target_ptr_size_);
+ for (size_t i = 0; i < count; ++i) {
+ ArtMethod* interface_method = orig->GetInterfaceMethod(i, target_ptr_size_);
+ ArtMethod* implementation_method = orig->GetImplementationMethod(i, target_ptr_size_);
+ copy->SetInterfaceMethod(i, target_ptr_size_, NativeLocationInImage(interface_method));
+ copy->SetImplementationMethod(i,
+ target_ptr_size_,
+ NativeLocationInImage(implementation_method));
+ }
+}
+
void ImageWriter::CopyAndFixupNativeData(size_t oat_index) {
- ImageInfo& image_info = GetImageInfo(oat_index);
+ const ImageInfo& image_info = GetImageInfo(oat_index);
// Copy ArtFields and methods to their locations and update the array for convenience.
for (auto& pair : native_object_relocations_) {
NativeObjectRelocation& relocation = pair.second;
GetImageAddress(reinterpret_cast<ArtField*>(pair.first)->GetDeclaringClass()));
break;
}
+ case kNativeObjectRelocationTypeRuntimeMethod:
case kNativeObjectRelocationTypeArtMethodClean:
case kNativeObjectRelocationTypeArtMethodDirty: {
CopyAndFixupMethod(reinterpret_cast<ArtMethod*>(pair.first),
case kNativeObjectRelocationTypeDexCacheArray:
// Nothing to copy here, everything is done in FixupDexCache().
break;
+ case kNativeObjectRelocationTypeIMTable: {
+ ImTable* orig_imt = reinterpret_cast<ImTable*>(pair.first);
+ ImTable* dest_imt = reinterpret_cast<ImTable*>(dest);
+ CopyAndFixupImTable(orig_imt, dest_imt);
+ break;
+ }
+ case kNativeObjectRelocationTypeIMTConflictTable: {
+ auto* orig_table = reinterpret_cast<ImtConflictTable*>(pair.first);
+ CopyAndFixupImtConflictTable(
+ orig_table,
+ new(dest)ImtConflictTable(orig_table->NumEntries(target_ptr_size_), target_ptr_size_));
+ break;
+ }
}
}
// Fixup the image method roots.
auto* image_header = reinterpret_cast<ImageHeader*>(image_info.image_->Begin());
- const ImageSection& methods_section = image_header->GetMethodsSection();
for (size_t i = 0; i < ImageHeader::kImageMethodsCount; ++i) {
ArtMethod* method = image_methods_[i];
CHECK(method != nullptr);
- // Only place runtime methods in the image of the default oat file.
- if (method->IsRuntimeMethod() && oat_index != GetDefaultOatIndex()) {
- continue;
- }
if (!IsInBootImage(method)) {
- auto it = native_object_relocations_.find(method);
- CHECK(it != native_object_relocations_.end()) << "No forwarding for " << PrettyMethod(method);
- NativeObjectRelocation& relocation = it->second;
- CHECK(methods_section.Contains(relocation.offset)) << relocation.offset << " not in "
- << methods_section;
- CHECK(relocation.IsArtMethodRelocation()) << relocation.type;
- method = reinterpret_cast<ArtMethod*>(global_image_begin_ + it->second.offset);
+ method = NativeLocationInImage(method);
}
image_header->SetImageMethod(static_cast<ImageHeader::ImageMethod>(i), method);
}
}
template <typename T>
+std::string PrettyPrint(T* ptr) SHARED_REQUIRES(Locks::mutator_lock_) {
+ std::ostringstream oss;
+ oss << ptr;
+ return oss.str();
+}
+
+template <>
+std::string PrettyPrint(ArtMethod* method) SHARED_REQUIRES(Locks::mutator_lock_) {
+ return PrettyMethod(method);
+}
+
+template <typename T>
T* ImageWriter::NativeLocationInImage(T* obj) {
if (obj == nullptr || IsInBootImage(obj)) {
return obj;
} else {
auto it = native_object_relocations_.find(obj);
- CHECK(it != native_object_relocations_.end()) << obj << " spaces "
- << Runtime::Current()->GetHeap()->DumpSpaces();
+ CHECK(it != native_object_relocations_.end()) << obj << " " << PrettyPrint(obj)
+ << " spaces " << Runtime::Current()->GetHeap()->DumpSpaces();
const NativeObjectRelocation& relocation = it->second;
ImageInfo& image_info = GetImageInfo(relocation.oat_index);
return reinterpret_cast<T*>(image_info.image_begin_ + relocation.offset);
// The resolution method has a special trampoline to call.
Runtime* runtime = Runtime::Current();
- if (UNLIKELY(orig == runtime->GetResolutionMethod())) {
- copy->SetEntryPointFromQuickCompiledCodePtrSize(
- GetOatAddress(kOatAddressQuickResolutionTrampoline), target_ptr_size_);
- } else if (UNLIKELY(orig == runtime->GetImtConflictMethod() ||
- orig == runtime->GetImtUnimplementedMethod())) {
- copy->SetEntryPointFromQuickCompiledCodePtrSize(
- GetOatAddress(kOatAddressQuickIMTConflictTrampoline), target_ptr_size_);
- } else if (UNLIKELY(orig->IsRuntimeMethod())) {
- bool found_one = false;
- for (size_t i = 0; i < static_cast<size_t>(Runtime::kLastCalleeSaveType); ++i) {
- auto idx = static_cast<Runtime::CalleeSaveType>(i);
- if (runtime->HasCalleeSaveMethod(idx) && runtime->GetCalleeSaveMethod(idx) == orig) {
- found_one = true;
- break;
+ if (orig->IsRuntimeMethod()) {
+ ImtConflictTable* orig_table = orig->GetImtConflictTable(target_ptr_size_);
+ if (orig_table != nullptr) {
+ // Special IMT conflict method, normal IMT conflict method or unimplemented IMT method.
+ copy->SetEntryPointFromQuickCompiledCodePtrSize(
+ GetOatAddress(kOatAddressQuickIMTConflictTrampoline), target_ptr_size_);
+ copy->SetImtConflictTable(NativeLocationInImage(orig_table), target_ptr_size_);
+ } else if (UNLIKELY(orig == runtime->GetResolutionMethod())) {
+ copy->SetEntryPointFromQuickCompiledCodePtrSize(
+ GetOatAddress(kOatAddressQuickResolutionTrampoline), target_ptr_size_);
+ } else {
+ bool found_one = false;
+ for (size_t i = 0; i < static_cast<size_t>(Runtime::kLastCalleeSaveType); ++i) {
+ auto idx = static_cast<Runtime::CalleeSaveType>(i);
+ if (runtime->HasCalleeSaveMethod(idx) && runtime->GetCalleeSaveMethod(idx) == orig) {
+ found_one = true;
+ break;
+ }
}
+ CHECK(found_one) << "Expected to find callee save method but got " << PrettyMethod(orig);
+ CHECK(copy->IsRuntimeMethod());
}
- CHECK(found_one) << "Expected to find callee save method but got " << PrettyMethod(orig);
- CHECK(copy->IsRuntimeMethod());
} else {
// We assume all methods have code. If they don't currently then we set them to the use the
// resolution trampoline. Abstract methods never have code and so we need to make sure their
return kBinArtMethodDirty;
case kNativeObjectRelocationTypeDexCacheArray:
return kBinDexCacheArray;
+ case kNativeObjectRelocationTypeRuntimeMethod:
+ return kBinRuntimeMethod;
+ case kNativeObjectRelocationTypeIMTable:
+ return kBinImTable;
+ case kNativeObjectRelocationTypeIMTConflictTable:
+ return kBinIMTConflictTable;
}
UNREACHABLE();
}
compile_app_image_(compile_app_image),
target_ptr_size_(InstructionSetPointerSize(compiler_driver_.GetInstructionSet())),
image_infos_(oat_filenames.size()),
- image_method_array_(ImageHeader::kImageMethodsCount),
dirty_methods_(0u),
clean_methods_(0u),
image_storage_mode_(image_storage_mode),
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