class JitCodeCache;
}
namespace mirror {
+ class ClassLoader;
class DexCache;
}
InvokeType invoke_type,
uint16_t class_def_idx,
uint32_t method_idx,
- jobject class_loader,
+ Handle<mirror::ClassLoader> class_loader,
const DexFile& dex_file,
Handle<mirror::DexCache> dex_cache) const = 0;
}
uint32_t method_idx = is_range ? inst->VRegB_3rc() : inst->VRegB_35c();
ScopedObjectAccess soa(Thread::Current());
- StackHandleScope<1> hs(soa.Self());
- Handle<mirror::ClassLoader> class_loader(hs.NewHandle(
- soa.Decode<mirror::ClassLoader>(unit_.GetClassLoader())));
ClassLinker* class_linker = unit_.GetClassLinker();
ArtMethod* resolved_method = class_linker->ResolveMethod<ClassLinker::kForceICCECheck>(
GetDexFile(),
method_idx,
unit_.GetDexCache(),
- class_loader,
+ unit_.GetClassLoader(),
/* referrer */ nullptr,
kVirtual);
InvokeType invoke_type ATTRIBUTE_UNUSED,
uint16_t class_def_idx,
uint32_t method_idx,
- jobject class_loader,
+ Handle<mirror::ClassLoader> class_loader,
const DexFile& dex_file,
DexToDexCompilationLevel dex_to_dex_compilation_level) {
DCHECK(driver != nullptr);
#define ART_COMPILER_DEX_DEX_TO_DEX_COMPILER_H_
#include "dex_file.h"
+#include "handle.h"
#include "invoke_type.h"
namespace art {
class CompiledMethod;
class CompilerDriver;
+namespace mirror {
+class ClassLoader;
+} // namespace mirror
+
namespace optimizer {
enum class DexToDexCompilationLevel {
InvokeType invoke_type,
uint16_t class_def_idx,
uint32_t method_idx,
- jobject class_loader,
+ Handle<mirror::ClassLoader> class_loader,
const DexFile& dex_file,
DexToDexCompilationLevel dex_to_dex_compilation_level);
namespace art {
-inline mirror::ClassLoader* CompilerDriver::GetClassLoader(const ScopedObjectAccess& soa,
- const DexCompilationUnit* mUnit) {
- return soa.Decode<mirror::ClassLoader>(mUnit->GetClassLoader()).Ptr();
-}
-
inline mirror::Class* CompilerDriver::ResolveClass(
const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache,
Handle<mirror::ClassLoader> class_loader, dex::TypeIndex cls_index,
const DexCompilationUnit* mUnit) {
DCHECK_EQ(dex_cache->GetDexFile(), mUnit->GetDexFile());
- DCHECK_EQ(class_loader.Get(), GetClassLoader(soa, mUnit));
+ DCHECK_EQ(class_loader.Get(), mUnit->GetClassLoader().Get());
mirror::Class* cls = mUnit->GetClassLinker()->ResolveType(
*mUnit->GetDexFile(), cls_index, dex_cache, class_loader);
DCHECK_EQ(cls == nullptr, soa.Self()->IsExceptionPending());
const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache,
Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit) {
DCHECK_EQ(dex_cache->GetDexFile(), mUnit->GetDexFile());
- DCHECK_EQ(class_loader.Get(), GetClassLoader(soa, mUnit));
+ DCHECK_EQ(class_loader.Get(), mUnit->GetClassLoader().Get());
const DexFile::MethodId& referrer_method_id =
mUnit->GetDexFile()->GetMethodId(mUnit->GetDexMethodIndex());
return ResolveClass(soa, dex_cache, class_loader, referrer_method_id.class_idx_, mUnit);
const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache,
Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit,
uint32_t field_idx, bool is_static) {
- DCHECK_EQ(class_loader.Get(), GetClassLoader(soa, mUnit));
+ DCHECK_EQ(class_loader.Get(), mUnit->GetClassLoader().Get());
return ResolveFieldWithDexFile(soa, dex_cache, class_loader, mUnit->GetDexFile(), field_idx,
is_static);
}
ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache,
Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit,
uint32_t method_idx, InvokeType invoke_type, bool check_incompatible_class_change) {
- DCHECK_EQ(class_loader.Get(), GetClassLoader(soa, mUnit));
+ DCHECK_EQ(class_loader.Get(), mUnit->GetClassLoader().Get());
ArtMethod* resolved_method =
check_incompatible_class_change
? mUnit->GetClassLinker()->ResolveMethod<ClassLinker::kForceICCECheck>(
InvokeType invoke_type,
uint16_t class_def_idx,
uint32_t method_idx,
- jobject class_loader,
+ Handle<mirror::ClassLoader> class_loader,
const DexFile& dex_file,
optimizer::DexToDexCompilationLevel dex_to_dex_compilation_level,
bool compilation_enabled,
// Look-up the ArtMethod associated with this code_item (if any)
// -- It is later used to lookup any [optimization] annotations for this method.
ScopedObjectAccess soa(self);
- StackHandleScope<1> hs(soa.Self());
- Handle<mirror::ClassLoader> class_loader_handle(hs.NewHandle(
- soa.Decode<mirror::ClassLoader>(class_loader)));
// TODO: Lookup annotation from DexFile directly without resolving method.
ArtMethod* method =
dex_file,
method_idx,
dex_cache,
- class_loader_handle,
+ class_loader,
/* referrer */ nullptr,
invoke_type);
if (compile) {
// NOTE: if compiler declines to compile this method, it will return null.
- compiled_method = driver->GetCompiler()->Compile(code_item, access_flags, invoke_type,
- class_def_idx, method_idx, class_loader,
- dex_file, dex_cache);
+ compiled_method = driver->GetCompiler()->Compile(code_item,
+ access_flags,
+ invoke_type,
+ class_def_idx,
+ method_idx,
+ class_loader,
+ dex_file,
+ dex_cache);
}
if (compiled_method == nullptr &&
dex_to_dex_compilation_level != optimizer::DexToDexCompilationLevel::kDontDexToDexCompile) {
uint32_t method_idx = method->GetDexMethodIndex();
uint32_t access_flags = method->GetAccessFlags();
InvokeType invoke_type = method->GetInvokeType();
- StackHandleScope<1> hs(self);
+ StackHandleScope<2> hs(self);
Handle<mirror::DexCache> dex_cache(hs.NewHandle(method->GetDexCache()));
+ Handle<mirror::ClassLoader> class_loader(
+ hs.NewHandle(method->GetDeclaringClass()->GetClassLoader()));
{
ScopedObjectAccessUnchecked soa(self);
ScopedLocalRef<jobject> local_class_loader(
- soa.Env(), soa.AddLocalReference<jobject>(method->GetDeclaringClass()->GetClassLoader()));
+ soa.Env(), soa.AddLocalReference<jobject>(class_loader.Get()));
jclass_loader = soa.Env()->NewGlobalRef(local_class_loader.get());
// Find the dex_file
dex_file = method->GetDexFile();
invoke_type,
class_def_idx,
method_idx,
- jclass_loader,
+ class_loader,
*dex_file,
dex_to_dex_compilation_level,
true,
invoke_type,
class_def_idx,
method_idx,
- jclass_loader,
+ class_loader,
*dex_file,
dex_to_dex_compilation_level,
true,
class ResolveCatchBlockExceptionsClassVisitor : public ClassVisitor {
public:
- explicit ResolveCatchBlockExceptionsClassVisitor(
- std::set<std::pair<dex::TypeIndex, const DexFile*>>& exceptions_to_resolve)
- : exceptions_to_resolve_(exceptions_to_resolve) {}
+ ResolveCatchBlockExceptionsClassVisitor() : classes_() {}
virtual bool operator()(ObjPtr<mirror::Class> c) OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) {
+ classes_.push_back(c);
+ return true;
+ }
+
+ void FindExceptionTypesToResolve(
+ std::set<std::pair<dex::TypeIndex, const DexFile*>>* exceptions_to_resolve)
+ REQUIRES_SHARED(Locks::mutator_lock_) {
const auto pointer_size = Runtime::Current()->GetClassLinker()->GetImagePointerSize();
- for (auto& m : c->GetMethods(pointer_size)) {
- ResolveExceptionsForMethod(&m);
+ for (ObjPtr<mirror::Class> klass : classes_) {
+ for (ArtMethod& method : klass->GetMethods(pointer_size)) {
+ FindExceptionTypesToResolveForMethod(&method, exceptions_to_resolve);
+ }
}
- return true;
}
private:
- void ResolveExceptionsForMethod(ArtMethod* method_handle)
+ void FindExceptionTypesToResolveForMethod(
+ ArtMethod* method,
+ std::set<std::pair<dex::TypeIndex, const DexFile*>>* exceptions_to_resolve)
REQUIRES_SHARED(Locks::mutator_lock_) {
- const DexFile::CodeItem* code_item = method_handle->GetCodeItem();
+ const DexFile::CodeItem* code_item = method->GetCodeItem();
if (code_item == nullptr) {
return; // native or abstract method
}
dex::TypeIndex encoded_catch_handler_handlers_type_idx =
dex::TypeIndex(DecodeUnsignedLeb128(&encoded_catch_handler_list));
// Add to set of types to resolve if not already in the dex cache resolved types
- if (!method_handle->IsResolvedTypeIdx(encoded_catch_handler_handlers_type_idx)) {
- exceptions_to_resolve_.emplace(encoded_catch_handler_handlers_type_idx,
- method_handle->GetDexFile());
+ if (!method->IsResolvedTypeIdx(encoded_catch_handler_handlers_type_idx)) {
+ exceptions_to_resolve->emplace(encoded_catch_handler_handlers_type_idx,
+ method->GetDexFile());
}
// ignore address associated with catch handler
DecodeUnsignedLeb128(&encoded_catch_handler_list);
}
}
- std::set<std::pair<dex::TypeIndex, const DexFile*>>& exceptions_to_resolve_;
+ std::vector<ObjPtr<mirror::Class>> classes_;
};
class RecordImageClassesVisitor : public ClassVisitor {
hs.NewHandle(class_linker->FindSystemClass(self, "Ljava/lang/Throwable;")));
do {
unresolved_exception_types.clear();
- ResolveCatchBlockExceptionsClassVisitor visitor(unresolved_exception_types);
- class_linker->VisitClasses(&visitor);
+ {
+ // Thread suspension is not allowed while ResolveCatchBlockExceptionsClassVisitor
+ // is using a std::vector<ObjPtr<mirror::Class>>.
+ ScopedAssertNoThreadSuspension ants(__FUNCTION__);
+ ResolveCatchBlockExceptionsClassVisitor visitor;
+ class_linker->VisitClasses(&visitor);
+ visitor.FindExceptionTypesToResolve(&unresolved_exception_types);
+ }
for (const auto& exception_type : unresolved_exception_types) {
dex::TypeIndex exception_type_idx = exception_type.first;
const DexFile* dex_file = exception_type.second;
dex_to_dex_references_.back().GetMethodIndexes().SetBit(method_ref.dex_method_index);
}
-bool CompilerDriver::CanAccessTypeWithoutChecks(uint32_t referrer_idx,
- Handle<mirror::DexCache> dex_cache,
- dex::TypeIndex type_idx) {
- // Get type from dex cache assuming it was populated by the verifier
- mirror::Class* resolved_class = dex_cache->GetResolvedType(type_idx);
+bool CompilerDriver::CanAccessTypeWithoutChecks(ObjPtr<mirror::Class> referrer_class,
+ ObjPtr<mirror::Class> resolved_class) {
if (resolved_class == nullptr) {
stats_->TypeNeedsAccessCheck();
return false; // Unknown class needs access checks.
}
- const DexFile::MethodId& method_id = dex_cache->GetDexFile()->GetMethodId(referrer_idx);
bool is_accessible = resolved_class->IsPublic(); // Public classes are always accessible.
if (!is_accessible) {
- mirror::Class* referrer_class = dex_cache->GetResolvedType(method_id.class_idx_);
if (referrer_class == nullptr) {
stats_->TypeNeedsAccessCheck();
return false; // Incomplete referrer knowledge needs access check.
return is_accessible;
}
-bool CompilerDriver::CanAccessInstantiableTypeWithoutChecks(uint32_t referrer_idx,
- Handle<mirror::DexCache> dex_cache,
- dex::TypeIndex type_idx,
+bool CompilerDriver::CanAccessInstantiableTypeWithoutChecks(ObjPtr<mirror::Class> referrer_class,
+ ObjPtr<mirror::Class> resolved_class,
bool* finalizable) {
- // Get type from dex cache assuming it was populated by the verifier.
- mirror::Class* resolved_class = dex_cache->GetResolvedType(type_idx);
if (resolved_class == nullptr) {
stats_->TypeNeedsAccessCheck();
// Be conservative.
return false; // Unknown class needs access checks.
}
*finalizable = resolved_class->IsFinalizable();
- const DexFile::MethodId& method_id = dex_cache->GetDexFile()->GetMethodId(referrer_idx);
bool is_accessible = resolved_class->IsPublic(); // Public classes are always accessible.
if (!is_accessible) {
- mirror::Class* referrer_class = dex_cache->GetResolvedType(method_id.class_idx_);
if (referrer_class == nullptr) {
stats_->TypeNeedsAccessCheck();
return false; // Incomplete referrer knowledge needs access check.
mirror::Class* referrer_class;
Handle<mirror::DexCache> dex_cache(mUnit->GetDexCache());
{
- StackHandleScope<1> hs(soa.Self());
- Handle<mirror::ClassLoader> class_loader_handle(
- hs.NewHandle(soa.Decode<mirror::ClassLoader>(mUnit->GetClassLoader())));
+ Handle<mirror::ClassLoader> class_loader_handle = mUnit->GetClassLoader();
resolved_field = ResolveField(soa, dex_cache, class_loader_handle, mUnit, field_idx, false);
referrer_class = resolved_field != nullptr
? ResolveCompilingMethodsClass(soa, dex_cache, class_loader_handle, mUnit) : nullptr;
continue;
}
previous_direct_method_idx = method_idx;
- CompileMethod(soa.Self(), driver, it.GetMethodCodeItem(), it.GetMethodAccessFlags(),
- it.GetMethodInvokeType(class_def), class_def_index,
- method_idx, jclass_loader, dex_file, dex_to_dex_compilation_level,
- compilation_enabled, dex_cache);
+ CompileMethod(soa.Self(),
+ driver,
+ it.GetMethodCodeItem(),
+ it.GetMethodAccessFlags(),
+ it.GetMethodInvokeType(class_def),
+ class_def_index,
+ method_idx,
+ class_loader,
+ dex_file,
+ dex_to_dex_compilation_level,
+ compilation_enabled,
+ dex_cache);
it.Next();
}
// Compile virtual methods
continue;
}
previous_virtual_method_idx = method_idx;
- CompileMethod(soa.Self(), driver, it.GetMethodCodeItem(), it.GetMethodAccessFlags(),
- it.GetMethodInvokeType(class_def), class_def_index,
- method_idx, jclass_loader, dex_file, dex_to_dex_compilation_level,
- compilation_enabled, dex_cache);
+ CompileMethod(soa.Self(),
+ driver, it.GetMethodCodeItem(),
+ it.GetMethodAccessFlags(),
+ it.GetMethodInvokeType(class_def),
+ class_def_index,
+ method_idx,
+ class_loader,
+ dex_file,
+ dex_to_dex_compilation_level,
+ compilation_enabled,
+ dex_cache);
it.Next();
}
DCHECK(!it.HasNext());
REQUIRES(!requires_constructor_barrier_lock_);
// Are runtime access checks necessary in the compiled code?
- bool CanAccessTypeWithoutChecks(uint32_t referrer_idx,
- Handle<mirror::DexCache> dex_cache,
- dex::TypeIndex type_idx)
+ bool CanAccessTypeWithoutChecks(ObjPtr<mirror::Class> referrer_class,
+ ObjPtr<mirror::Class> resolved_class)
REQUIRES_SHARED(Locks::mutator_lock_);
// Are runtime access and instantiable checks necessary in the code?
// out_is_finalizable is set to whether the type is finalizable.
- bool CanAccessInstantiableTypeWithoutChecks(uint32_t referrer_idx,
- Handle<mirror::DexCache> dex_cache,
- dex::TypeIndex type_idx,
+ bool CanAccessInstantiableTypeWithoutChecks(ObjPtr<mirror::Class> referrer_class,
+ ObjPtr<mirror::Class> resolved_class,
bool* out_is_finalizable)
REQUIRES_SHARED(Locks::mutator_lock_);
uint32_t field_idx)
REQUIRES_SHARED(Locks::mutator_lock_);
- mirror::ClassLoader* GetClassLoader(const ScopedObjectAccess& soa,
- const DexCompilationUnit* mUnit)
- REQUIRES_SHARED(Locks::mutator_lock_);
-
private:
void PreCompile(jobject class_loader,
const std::vector<const DexFile*>& dex_files,
};
// Disabled due to 10 second runtime on host
+// TODO: Update the test for hash-based dex cache arrays. Bug: 30627598
TEST_F(CompilerDriverTest, DISABLED_LARGE_CompileDexLibCore) {
CompileAll(nullptr);
namespace art {
-DexCompilationUnit::DexCompilationUnit(jobject class_loader,
+DexCompilationUnit::DexCompilationUnit(Handle<mirror::ClassLoader> class_loader,
ClassLinker* class_linker,
const DexFile& dex_file,
const DexFile::CodeItem* code_item,
class DexCompilationUnit : public DeletableArenaObject<kArenaAllocMisc> {
public:
- DexCompilationUnit(jobject class_loader,
+ DexCompilationUnit(Handle<mirror::ClassLoader> class_loader,
ClassLinker* class_linker,
const DexFile& dex_file,
const DexFile::CodeItem* code_item,
const VerifiedMethod* verified_method,
Handle<mirror::DexCache> dex_cache);
- jobject GetClassLoader() const {
+ Handle<mirror::ClassLoader> GetClassLoader() const {
return class_loader_;
}
}
private:
- const jobject class_loader_;
+ const Handle<mirror::ClassLoader> class_loader_;
ClassLinker* const class_linker_;
const uint32_t access_flags_;
const VerifiedMethod* verified_method_;
- Handle<mirror::DexCache> dex_cache_;
+ const Handle<mirror::DexCache> dex_cache_;
std::string symbol_;
};
}
ObjPtr<mirror::DexCache> dex_cache = self->DecodeJObject(data.weak_root)->AsDexCache();
for (size_t i = 0; i < dex_cache->NumResolvedTypes(); i++) {
- Class* klass = dex_cache->GetResolvedType(dex::TypeIndex(i));
+ mirror::TypeDexCachePair pair =
+ dex_cache->GetResolvedTypes()[i].load(std::memory_order_relaxed);
+ mirror::Class* klass = pair.object.Read();
if (klass != nullptr && !KeepClass(klass)) {
- dex_cache->SetResolvedType(dex::TypeIndex(i), nullptr);
+ dex_cache->ClearResolvedType(dex::TypeIndex(pair.index));
}
}
ArtMethod** resolved_methods = dex_cache->GetResolvedMethods();
// above comment for intern tables.
ClassTable temp_class_table;
temp_class_table.ReadFromMemory(class_table_memory_ptr);
- CHECK_EQ(class_loaders_.size(), compile_app_image_ ? 1u : 0u);
- mirror::ClassLoader* class_loader = compile_app_image_ ? *class_loaders_.begin() : nullptr;
+ ObjPtr<mirror::ClassLoader> class_loader = GetClassLoader();
CHECK_EQ(temp_class_table.NumZygoteClasses(class_loader),
table->NumNonZygoteClasses(class_loader) + table->NumZygoteClasses(class_loader));
UnbufferedRootVisitor visitor(&root_visitor, RootInfo(kRootUnknown));
orig_dex_cache->FixupStrings(NativeCopyLocation(orig_strings, orig_dex_cache),
ImageAddressVisitor(this));
}
- GcRoot<mirror::Class>* orig_types = orig_dex_cache->GetResolvedTypes();
+ mirror::TypeDexCacheType* orig_types = orig_dex_cache->GetResolvedTypes();
if (orig_types != nullptr) {
copy_dex_cache->SetFieldPtrWithSize<false>(mirror::DexCache::ResolvedTypesOffset(),
NativeLocationInImage(orig_types),
} // namespace space
} // namespace gc
+namespace mirror {
+class ClassLoader;
+} // namespace mirror
+
class ClassLoaderVisitor;
class ClassTable;
+class ImtConflictTable;
static constexpr int kInvalidFd = -1;
return true;
}
+ ObjPtr<mirror::ClassLoader> GetClassLoader() {
+ CHECK_EQ(class_loaders_.size(), compile_app_image_ ? 1u : 0u);
+ return compile_app_image_ ? *class_loaders_.begin() : nullptr;
+ }
+
template <typename T>
T* GetImageAddress(T* object) const REQUIRES_SHARED(Locks::mutator_lock_) {
if (object == nullptr || IsInBootImage(object)) {
WriteCodeMethodVisitor(OatWriter* writer, OutputStream* out, const size_t file_offset,
size_t relative_offset) SHARED_LOCK_FUNCTION(Locks::mutator_lock_)
: OatDexMethodVisitor(writer, relative_offset),
+ class_loader_(writer->HasImage() ? writer->image_writer_->GetClassLoader() : nullptr),
out_(out),
file_offset_(file_offset),
soa_(Thread::Current()),
}
private:
+ ObjPtr<mirror::ClassLoader> class_loader_;
OutputStream* const out_;
const size_t file_offset_;
const ScopedObjectAccess soa_;
}
mirror::Class* GetTargetType(const LinkerPatch& patch) REQUIRES_SHARED(Locks::mutator_lock_) {
+ DCHECK(writer_->HasImage());
ObjPtr<mirror::DexCache> dex_cache = GetDexCache(patch.TargetTypeDexFile());
- mirror::Class* type = dex_cache->GetResolvedType(patch.TargetTypeIndex());
+ ObjPtr<mirror::Class> type =
+ ClassLinker::LookupResolvedType(patch.TargetTypeIndex(), dex_cache, class_loader_);
CHECK(type != nullptr);
- return type;
+ return type.Ptr();
}
mirror::String* GetTargetString(const LinkerPatch& patch) REQUIRES_SHARED(Locks::mutator_lock_) {
compiler_driver_(driver),
compilation_stats_(compiler_stats),
block_builder_(graph, dex_file, code_item),
- ssa_builder_(graph, dex_compilation_unit->GetDexCache(), handles),
+ ssa_builder_(graph,
+ dex_compilation_unit->GetClassLoader(),
+ dex_compilation_unit->GetDexCache(),
+ handles),
instruction_builder_(graph,
&block_builder_,
&ssa_builder_,
code_item_(code_item),
dex_compilation_unit_(nullptr),
compiler_driver_(nullptr),
- null_dex_cache_(),
compilation_stats_(nullptr),
block_builder_(graph, nullptr, code_item),
- ssa_builder_(graph, null_dex_cache_, handles),
+ ssa_builder_(graph,
+ handles->NewHandle<mirror::ClassLoader>(nullptr),
+ handles->NewHandle<mirror::DexCache>(nullptr),
+ handles),
instruction_builder_(graph,
&block_builder_,
&ssa_builder_,
/* code_generator */ nullptr,
/* interpreter_metadata */ nullptr,
/* compiler_stats */ nullptr,
- null_dex_cache_,
+ handles->NewHandle<mirror::DexCache>(nullptr),
handles) {}
GraphAnalysisResult BuildGraph();
CompilerDriver* const compiler_driver_;
- ScopedNullHandle<mirror::DexCache> null_dex_cache_;
-
OptimizingCompilerStats* compilation_stats_;
HBasicBlockBuilder block_builder_;
}
static dex::TypeIndex FindClassIndexIn(mirror::Class* cls,
- const DexFile& dex_file,
- Handle<mirror::DexCache> dex_cache)
+ const DexCompilationUnit& compilation_unit)
REQUIRES_SHARED(Locks::mutator_lock_) {
+ const DexFile& dex_file = *compilation_unit.GetDexFile();
dex::TypeIndex index;
if (cls->GetDexCache() == nullptr) {
DCHECK(cls->IsArrayClass()) << cls->PrettyClass();
DCHECK(cls->IsProxyClass()) << cls->PrettyClass();
// TODO: deal with proxy classes.
} else if (IsSameDexFile(cls->GetDexFile(), dex_file)) {
- DCHECK_EQ(cls->GetDexCache(), dex_cache.Get());
+ DCHECK_EQ(cls->GetDexCache(), compilation_unit.GetDexCache().Get());
index = cls->GetDexTypeIndex();
- // Update the dex cache to ensure the class is in. The generated code will
- // consider it is. We make it safe by updating the dex cache, as other
- // dex files might also load the class, and there is no guarantee the dex
- // cache of the dex file of the class will be updated.
- if (dex_cache->GetResolvedType(index) == nullptr) {
- dex_cache->SetResolvedType(index, cls);
- }
} else {
index = cls->FindTypeIndexInOtherDexFile(dex_file);
- // We cannot guarantee the entry in the dex cache will resolve to the same class,
+ // We cannot guarantee the entry will resolve to the same class,
// as there may be different class loaders. So only return the index if it's
- // the right class in the dex cache already.
- if (index.IsValid() && dex_cache->GetResolvedType(index) != cls) {
- index = dex::TypeIndex::Invalid();
+ // the right class already resolved with the class loader.
+ if (index.IsValid()) {
+ ObjPtr<mirror::Class> resolved = ClassLinker::LookupResolvedType(
+ index, compilation_unit.GetDexCache().Get(), compilation_unit.GetClassLoader().Get());
+ if (resolved != cls) {
+ index = dex::TypeIndex::Invalid();
+ }
}
}
DCHECK(invoke_instruction->IsInvokeVirtual() || invoke_instruction->IsInvokeInterface())
<< invoke_instruction->DebugName();
- const DexFile& caller_dex_file = *caller_compilation_unit_.GetDexFile();
dex::TypeIndex class_index = FindClassIndexIn(
- GetMonomorphicType(classes), caller_dex_file, caller_compilation_unit_.GetDexCache());
+ GetMonomorphicType(classes), caller_compilation_unit_);
if (!class_index.IsValid()) {
VLOG(compiler) << "Call to " << ArtMethod::PrettyMethod(resolved_method)
<< " from inline cache is not inlined because its class is not"
// Run type propagation to get the guard typed, and eventually propagate the
// type of the receiver.
ReferenceTypePropagation rtp_fixup(graph_,
+ outer_compilation_unit_.GetClassLoader(),
outer_compilation_unit_.GetDexCache(),
handles_,
/* is_first_run */ false);
ClassLinker* class_linker = caller_compilation_unit_.GetClassLinker();
PointerSize pointer_size = class_linker->GetImagePointerSize();
- const DexFile& caller_dex_file = *caller_compilation_unit_.GetDexFile();
bool all_targets_inlined = true;
bool one_target_inlined = false;
HInstruction* cursor = invoke_instruction->GetPrevious();
HBasicBlock* bb_cursor = invoke_instruction->GetBlock();
- dex::TypeIndex class_index = FindClassIndexIn(
- handle.Get(), caller_dex_file, caller_compilation_unit_.GetDexCache());
+ dex::TypeIndex class_index = FindClassIndexIn(handle.Get(), caller_compilation_unit_);
HInstruction* return_replacement = nullptr;
if (!class_index.IsValid() ||
!TryBuildAndInline(invoke_instruction,
// Run type propagation to get the guards typed.
ReferenceTypePropagation rtp_fixup(graph_,
+ outer_compilation_unit_.GetClassLoader(),
outer_compilation_unit_.GetDexCache(),
handles_,
/* is_first_run */ false);
// Run type propagation to get the guard typed.
ReferenceTypePropagation rtp_fixup(graph_,
+ outer_compilation_unit_.GetClassLoader(),
outer_compilation_unit_.GetDexCache(),
handles_,
/* is_first_run */ false);
// Actual return value has a more specific type than the method's declared
// return type. Run RTP again on the outer graph to propagate it.
ReferenceTypePropagation(graph_,
+ outer_compilation_unit_.GetClassLoader(),
outer_compilation_unit_.GetDexCache(),
handles_,
/* is_first_run */ false).Run();
/* dex_pc */ 0);
if (iget->GetType() == Primitive::kPrimNot) {
// Use the same dex_cache that we used for field lookup as the hint_dex_cache.
- ReferenceTypePropagation rtp(graph_, dex_cache, handles_, /* is_first_run */ false);
+ ReferenceTypePropagation rtp(graph_,
+ outer_compilation_unit_.GetClassLoader(),
+ dex_cache,
+ handles_,
+ /* is_first_run */ false);
rtp.Visit(iget);
}
return iget;
resolved_method->GetDeclaringClass()->GetClassLoader()));
DexCompilationUnit dex_compilation_unit(
- class_loader.ToJObject(),
+ class_loader,
class_linker,
callee_dex_file,
code_item,
// are more specific than the declared ones, run RTP again on the inner graph.
if (run_rtp || ArgumentTypesMoreSpecific(invoke_instruction, resolved_method)) {
ReferenceTypePropagation(callee_graph,
+ outer_compilation_unit_.GetClassLoader(),
dex_compilation_unit.GetDexCache(),
handles_,
/* is_first_run */ false).Run();
ArtMethod* HInstructionBuilder::ResolveMethod(uint16_t method_idx, InvokeType invoke_type) {
ScopedObjectAccess soa(Thread::Current());
- StackHandleScope<3> hs(soa.Self());
+ StackHandleScope<2> hs(soa.Self());
ClassLinker* class_linker = dex_compilation_unit_->GetClassLinker();
- Handle<mirror::ClassLoader> class_loader(hs.NewHandle(
- soa.Decode<mirror::ClassLoader>(dex_compilation_unit_->GetClassLoader())));
+ Handle<mirror::ClassLoader> class_loader = dex_compilation_unit_->GetClassLoader();
Handle<mirror::Class> compiling_class(hs.NewHandle(GetCompilingClass()));
// We fetch the referenced class eagerly (that is, the class pointed by in the MethodId
// at method_idx), as `CanAccessResolvedMethod` expects it be be in the dex cache.
static mirror::Class* GetClassFrom(CompilerDriver* driver,
const DexCompilationUnit& compilation_unit) {
ScopedObjectAccess soa(Thread::Current());
- StackHandleScope<1> hs(soa.Self());
- Handle<mirror::ClassLoader> class_loader(hs.NewHandle(
- soa.Decode<mirror::ClassLoader>(compilation_unit.GetClassLoader())));
+ Handle<mirror::ClassLoader> class_loader = compilation_unit.GetClassLoader();
Handle<mirror::DexCache> dex_cache = compilation_unit.GetDexCache();
return driver->ResolveCompilingMethodsClass(soa, dex_cache, class_loader, &compilation_unit);
bool HInstructionBuilder::IsOutermostCompilingClass(dex::TypeIndex type_index) const {
ScopedObjectAccess soa(Thread::Current());
- StackHandleScope<3> hs(soa.Self());
+ StackHandleScope<2> hs(soa.Self());
Handle<mirror::DexCache> dex_cache = dex_compilation_unit_->GetDexCache();
- Handle<mirror::ClassLoader> class_loader(hs.NewHandle(
- soa.Decode<mirror::ClassLoader>(dex_compilation_unit_->GetClassLoader())));
+ Handle<mirror::ClassLoader> class_loader = dex_compilation_unit_->GetClassLoader();
Handle<mirror::Class> cls(hs.NewHandle(compiler_driver_->ResolveClass(
soa, dex_cache, class_loader, type_index, dex_compilation_unit_)));
Handle<mirror::Class> outer_class(hs.NewHandle(GetOutermostCompilingClass()));
StackHandleScope<2> hs(soa.Self());
ClassLinker* class_linker = dex_compilation_unit_->GetClassLinker();
- Handle<mirror::ClassLoader> class_loader(hs.NewHandle(
- soa.Decode<mirror::ClassLoader>(dex_compilation_unit_->GetClassLoader())));
+ Handle<mirror::ClassLoader> class_loader = dex_compilation_unit_->GetClassLoader();
Handle<mirror::Class> compiling_class(hs.NewHandle(GetCompilingClass()));
ArtField* resolved_field = class_linker->ResolveField(*dex_compilation_unit_->GetDexFile(),
HLoadClass* HInstructionBuilder::BuildLoadClass(dex::TypeIndex type_index, uint32_t dex_pc) {
ScopedObjectAccess soa(Thread::Current());
- StackHandleScope<2> hs(soa.Self());
const DexFile& dex_file = *dex_compilation_unit_->GetDexFile();
- Handle<mirror::ClassLoader> class_loader(hs.NewHandle(
- soa.Decode<mirror::ClassLoader>(dex_compilation_unit_->GetClassLoader())));
+ Handle<mirror::ClassLoader> class_loader = dex_compilation_unit_->GetClassLoader();
Handle<mirror::Class> klass = handles_->NewHandle(compiler_driver_->ResolveClass(
soa, dex_compilation_unit_->GetDexCache(), class_loader, type_index, dex_compilation_unit_));
}
}
-bool HInstructionBuilder::NeedsAccessCheck(dex::TypeIndex type_index,
- Handle<mirror::DexCache> dex_cache,
- bool* finalizable) const {
- return !compiler_driver_->CanAccessInstantiableTypeWithoutChecks(
- dex_compilation_unit_->GetDexMethodIndex(), dex_cache, type_index, finalizable);
-}
-
bool HInstructionBuilder::NeedsAccessCheck(dex::TypeIndex type_index, bool* finalizable) const {
- ScopedObjectAccess soa(Thread::Current());
- Handle<mirror::DexCache> dex_cache = dex_compilation_unit_->GetDexCache();
- return NeedsAccessCheck(type_index, dex_cache, finalizable);
+ return !compiler_driver_->CanAccessInstantiableTypeWithoutChecks(
+ LookupReferrerClass(), LookupResolvedType(type_index, *dex_compilation_unit_), finalizable);
}
bool HInstructionBuilder::CanDecodeQuickenedInfo() const {
return true;
} // NOLINT(readability/fn_size)
+ObjPtr<mirror::Class> HInstructionBuilder::LookupResolvedType(
+ dex::TypeIndex type_index,
+ const DexCompilationUnit& compilation_unit) const {
+ return ClassLinker::LookupResolvedType(
+ type_index, compilation_unit.GetDexCache().Get(), compilation_unit.GetClassLoader().Get());
+}
+
+ObjPtr<mirror::Class> HInstructionBuilder::LookupReferrerClass() const {
+ // TODO: Cache the result in a Handle<mirror::Class>.
+ const DexFile::MethodId& method_id =
+ dex_compilation_unit_->GetDexFile()->GetMethodId(dex_compilation_unit_->GetDexMethodIndex());
+ return LookupResolvedType(method_id.class_idx_, *dex_compilation_unit_);
+}
+
} // namespace art
// Returns whether the current method needs access check for the type.
// Output parameter finalizable is set to whether the type is finalizable.
- bool NeedsAccessCheck(dex::TypeIndex type_index,
- Handle<mirror::DexCache> dex_cache,
- /*out*/bool* finalizable) const
+ bool NeedsAccessCheck(dex::TypeIndex type_index, /*out*/bool* finalizable) const
REQUIRES_SHARED(Locks::mutator_lock_);
- bool NeedsAccessCheck(dex::TypeIndex type_index, /*out*/bool* finalizable) const;
template<typename T>
void Unop_12x(const Instruction& instruction, Primitive::Type type, uint32_t dex_pc);
// be found.
ArtField* ResolveField(uint16_t field_idx, bool is_static, bool is_put);
+ ObjPtr<mirror::Class> LookupResolvedType(dex::TypeIndex type_index,
+ const DexCompilationUnit& compilation_unit) const
+ REQUIRES_SHARED(Locks::mutator_lock_);
+
+ ObjPtr<mirror::Class> LookupReferrerClass() const REQUIRES_SHARED(Locks::mutator_lock_);
+
ArenaAllocator* const arena_;
HGraph* const graph_;
VariableSizedHandleScope* handles_;
InvokeType invoke_type,
uint16_t class_def_idx,
uint32_t method_idx,
- jobject class_loader,
+ Handle<mirror::ClassLoader> class_loader,
const DexFile& dex_file,
Handle<mirror::DexCache> dex_cache) const OVERRIDE;
InvokeType invoke_type,
uint16_t class_def_idx,
uint32_t method_idx,
- jobject class_loader,
+ Handle<mirror::ClassLoader> class_loader,
const DexFile& dex_file,
Handle<mirror::DexCache> dex_cache,
ArtMethod* method,
InvokeType invoke_type,
uint16_t class_def_idx,
uint32_t method_idx,
- jobject class_loader,
+ Handle<mirror::ClassLoader> class_loader,
const DexFile& dex_file,
Handle<mirror::DexCache> dex_cache,
ArtMethod* method,
const uint8_t* interpreter_metadata = nullptr;
if (method == nullptr) {
ScopedObjectAccess soa(Thread::Current());
- StackHandleScope<1> hs(soa.Self());
- Handle<mirror::ClassLoader> loader(hs.NewHandle(
- soa.Decode<mirror::ClassLoader>(class_loader)));
method = compiler_driver->ResolveMethod(
- soa, dex_cache, loader, &dex_compilation_unit, method_idx, invoke_type);
+ soa, dex_cache, class_loader, &dex_compilation_unit, method_idx, invoke_type);
}
// For AOT compilation, we may not get a method, for example if its class is erroneous.
// JIT should always have a method.
graph->SetArtMethod(method);
ScopedObjectAccess soa(Thread::Current());
interpreter_metadata = method->GetQuickenedInfo(class_linker->GetImagePointerSize());
- dex::TypeIndex type_index = method->GetDeclaringClass()->GetDexTypeIndex();
-
- // Update the dex cache if the type is not in it yet. Note that under AOT,
- // the verifier must have set it, but under JIT, there's no guarantee, as we
- // don't necessarily run the verifier.
- // The compiler and the compiler driver assume the compiling class is
- // in the dex cache.
- if (dex_cache->GetResolvedType(type_index) == nullptr) {
- dex_cache->SetResolvedType(type_index, method->GetDeclaringClass());
- }
}
std::unique_ptr<CodeGenerator> codegen(
InvokeType invoke_type,
uint16_t class_def_idx,
uint32_t method_idx,
- jobject jclass_loader,
+ Handle<mirror::ClassLoader> jclass_loader,
const DexFile& dex_file,
Handle<mirror::DexCache> dex_cache) const {
CompilerDriver* compiler_driver = GetCompilerDriver();
Handle<mirror::DexCache> dex_cache(hs.NewHandle(method->GetDexCache()));
DCHECK(method->IsCompilable());
- jobject jclass_loader = class_loader.ToJObject();
const DexFile* dex_file = method->GetDexFile();
const uint16_t class_def_idx = method->GetClassDefIndex();
const DexFile::CodeItem* code_item = dex_file->GetCodeItem(method->GetCodeItemOffset());
invoke_type,
class_def_idx,
method_idx,
- jclass_loader,
+ class_loader,
*dex_file,
dex_cache,
method,
class ReferenceTypePropagation::RTPVisitor : public HGraphDelegateVisitor {
public:
RTPVisitor(HGraph* graph,
+ Handle<mirror::ClassLoader> class_loader,
Handle<mirror::DexCache> hint_dex_cache,
HandleCache* handle_cache,
ArenaVector<HInstruction*>* worklist,
bool is_first_run)
: HGraphDelegateVisitor(graph),
+ class_loader_(class_loader),
hint_dex_cache_(hint_dex_cache),
handle_cache_(handle_cache),
worklist_(worklist),
bool is_exact);
private:
+ Handle<mirror::ClassLoader> class_loader_;
Handle<mirror::DexCache> hint_dex_cache_;
HandleCache* handle_cache_;
ArenaVector<HInstruction*>* worklist_;
};
ReferenceTypePropagation::ReferenceTypePropagation(HGraph* graph,
+ Handle<mirror::ClassLoader> class_loader,
Handle<mirror::DexCache> hint_dex_cache,
VariableSizedHandleScope* handles,
bool is_first_run,
const char* name)
: HOptimization(graph, name),
+ class_loader_(class_loader),
hint_dex_cache_(hint_dex_cache),
handle_cache_(handles),
worklist_(graph->GetArena()->Adapter(kArenaAllocReferenceTypePropagation)),
}
void ReferenceTypePropagation::Visit(HInstruction* instruction) {
- RTPVisitor visitor(graph_, hint_dex_cache_, &handle_cache_, &worklist_, is_first_run_);
+ RTPVisitor visitor(graph_,
+ class_loader_,
+ hint_dex_cache_,
+ &handle_cache_,
+ &worklist_,
+ is_first_run_);
instruction->Accept(&visitor);
}
}
void ReferenceTypePropagation::VisitBasicBlock(HBasicBlock* block) {
- RTPVisitor visitor(graph_, hint_dex_cache_, &handle_cache_, &worklist_, is_first_run_);
+ RTPVisitor visitor(graph_,
+ class_loader_,
+ hint_dex_cache_,
+ &handle_cache_,
+ &worklist_,
+ is_first_run_);
// Handle Phis first as there might be instructions in the same block who depend on them.
for (HInstructionIterator it(block->GetPhis()); !it.Done(); it.Advance()) {
VisitPhi(it.Current()->AsPhi());
ScopedObjectAccess soa(Thread::Current());
ObjPtr<mirror::DexCache> dex_cache = FindDexCacheWithHint(soa.Self(), dex_file, hint_dex_cache_);
- // Get type from dex cache assuming it was populated by the verifier.
- SetClassAsTypeInfo(instr, dex_cache->GetResolvedType(type_idx), is_exact);
+ ObjPtr<mirror::Class> klass =
+ ClassLinker::LookupResolvedType(type_idx, dex_cache, class_loader_.Get());
+ SetClassAsTypeInfo(instr, klass, is_exact);
}
void ReferenceTypePropagation::RTPVisitor::VisitNewInstance(HNewInstance* instr) {
SetClassAsTypeInfo(instr, instr->GetLoadClass()->GetClass().Get(), /* is_exact */ true);
}
-static mirror::Class* GetClassFromDexCache(Thread* self,
- const DexFile& dex_file,
- dex::TypeIndex type_idx,
- Handle<mirror::DexCache> hint_dex_cache)
- REQUIRES_SHARED(Locks::mutator_lock_) {
- ObjPtr<mirror::DexCache> dex_cache = FindDexCacheWithHint(self, dex_file, hint_dex_cache);
- // Get type from dex cache assuming it was populated by the verifier.
- return dex_cache->GetResolvedType(type_idx);
-}
-
void ReferenceTypePropagation::RTPVisitor::VisitParameterValue(HParameterValue* instr) {
// We check if the existing type is valid: the inliner may have set it.
if (instr->GetType() == Primitive::kPrimNot && !instr->GetReferenceTypeInfo().IsValid()) {
- ScopedObjectAccess soa(Thread::Current());
- mirror::Class* resolved_class = GetClassFromDexCache(soa.Self(),
- instr->GetDexFile(),
- instr->GetTypeIndex(),
- hint_dex_cache_);
- SetClassAsTypeInfo(instr, resolved_class, /* is_exact */ false);
+ UpdateReferenceTypeInfo(instr,
+ instr->GetTypeIndex(),
+ instr->GetDexFile(),
+ /* is_exact */ false);
}
}
class ReferenceTypePropagation : public HOptimization {
public:
ReferenceTypePropagation(HGraph* graph,
+ Handle<mirror::ClassLoader> class_loader,
Handle<mirror::DexCache> hint_dex_cache,
VariableSizedHandleScope* handles,
bool is_first_run,
void ValidateTypes();
+ Handle<mirror::ClassLoader> class_loader_;
+
// Note: hint_dex_cache_ is usually, but not necessarily, the dex cache associated with
// graph_->GetDexFile(). Since we may look up also in other dex files, it's used only
// as a hint, to reduce the number of calls to the costly ClassLinker::FindDexCache().
void SetupPropagation(VariableSizedHandleScope* handles) {
graph_->InitializeInexactObjectRTI(handles);
propagation_ = new (&allocator_) ReferenceTypePropagation(graph_,
+ Handle<mirror::ClassLoader>(),
Handle<mirror::DexCache>(),
handles,
true,
// 4) Compute type of reference type instructions. The pass assumes that
// NullConstant has been fixed up.
- ReferenceTypePropagation(graph_, dex_cache_, handles_, /* is_first_run */ true).Run();
+ ReferenceTypePropagation(graph_,
+ class_loader_,
+ dex_cache_,
+ handles_,
+ /* is_first_run */ true).Run();
// 5) HInstructionBuilder duplicated ArrayGet instructions with ambiguous type
// (int/float or long/double) and marked ArraySets with ambiguous input type.
class SsaBuilder : public ValueObject {
public:
SsaBuilder(HGraph* graph,
+ Handle<mirror::ClassLoader> class_loader,
Handle<mirror::DexCache> dex_cache,
VariableSizedHandleScope* handles)
: graph_(graph),
+ class_loader_(class_loader),
dex_cache_(dex_cache),
handles_(handles),
agets_fixed_(false),
void RemoveRedundantUninitializedStrings();
HGraph* graph_;
+ Handle<mirror::ClassLoader> class_loader_;
Handle<mirror::DexCache> dex_cache_;
VariableSizedHandleScope* const handles_;
ScopedIndentation indent2(&state->vios_);
auto* resolved_types = dex_cache->GetResolvedTypes();
for (size_t i = 0; i < num_types; ++i) {
- auto* elem = resolved_types[i].Read();
+ auto pair = resolved_types[i].load(std::memory_order_relaxed);
size_t run = 0;
- for (size_t j = i + 1; j != num_types && elem == resolved_types[j].Read(); ++j) {
+ for (size_t j = i + 1; j != num_types; ++j) {
+ auto other_pair = resolved_types[j].load(std::memory_order_relaxed);
+ if (pair.index != other_pair.index ||
+ pair.object.Read() != other_pair.object.Read()) {
+ break;
+ }
++run;
}
if (run == 0) {
i = i + run;
}
std::string msg;
+ auto* elem = pair.object.Read();
if (elem == nullptr) {
msg = "null";
} else {
msg = elem->PrettyClass();
}
- os << StringPrintf("%p %s\n", elem, msg.c_str());
+ os << StringPrintf("%p %u %s\n", elem, pair.index, msg.c_str());
}
}
}
if (orig_strings != nullptr) {
orig_dex_cache->FixupStrings(RelocatedCopyOf(orig_strings), RelocatedPointerVisitor(this));
}
- GcRoot<mirror::Class>* orig_types = orig_dex_cache->GetResolvedTypes();
- GcRoot<mirror::Class>* relocated_types = RelocatedAddressOfPointer(orig_types);
+ mirror::TypeDexCacheType* orig_types = orig_dex_cache->GetResolvedTypes();
+ mirror::TypeDexCacheType* relocated_types = RelocatedAddressOfPointer(orig_types);
copy_dex_cache->SetField64<false>(
mirror::DexCache::ResolvedTypesOffset(),
static_cast<int64_t>(reinterpret_cast<uintptr_t>(relocated_types)));
template <bool kResolve>
inline ObjPtr<mirror::Class> ArtField::GetType() {
+ // TODO: Refactor this function into two functions, ResolveType() and LookupType()
+ // so that we can properly annotate it with no-suspension possible / suspension possible.
const uint32_t field_index = GetDexFieldIndex();
ObjPtr<mirror::Class> declaring_class = GetDeclaringClass();
if (UNLIKELY(declaring_class->IsProxyClass())) {
const DexFile* const dex_file = dex_cache->GetDexFile();
const DexFile::FieldId& field_id = dex_file->GetFieldId(field_index);
ObjPtr<mirror::Class> type = dex_cache->GetResolvedType(field_id.type_idx_);
- if (kResolve && UNLIKELY(type == nullptr)) {
- type = ResolveGetType(field_id.type_idx_);
- CHECK(type != nullptr || Thread::Current()->IsExceptionPending());
+ if (UNLIKELY(type == nullptr)) {
+ ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
+ if (kResolve) {
+ type = class_linker->ResolveType(*dex_file, field_id.type_idx_, declaring_class);
+ CHECK(type != nullptr || Thread::Current()->IsExceptionPending());
+ } else {
+ type = class_linker->LookupResolvedType(
+ *dex_file, field_id.type_idx_, dex_cache, declaring_class->GetClassLoader());
+ DCHECK(!Thread::Current()->IsExceptionPending());
+ }
}
return type;
}
return Runtime::Current()->GetClassLinker()->FindSystemClass(Thread::Current(), descriptor);
}
-ObjPtr<mirror::Class> ArtField::ResolveGetType(dex::TypeIndex type_idx) {
- return Runtime::Current()->GetClassLinker()->ResolveType(type_idx, this);
-}
-
ObjPtr<mirror::String> ArtField::ResolveGetStringName(Thread* self,
const DexFile& dex_file,
dex::StringIndex string_idx,
private:
ObjPtr<mirror::Class> ProxyFindSystemClass(const char* descriptor)
REQUIRES_SHARED(Locks::mutator_lock_);
- ObjPtr<mirror::Class> ResolveGetType(dex::TypeIndex type_idx)
- REQUIRES_SHARED(Locks::mutator_lock_);
ObjPtr<mirror::String> ResolveGetStringName(Thread* self,
const DexFile& dex_file,
dex::StringIndex string_idx,
}
inline mirror::Class* ArtMethod::GetClassFromTypeIndex(dex::TypeIndex type_idx, bool resolve) {
+ // TODO: Refactor this function into two functions, Resolve...() and Lookup...()
+ // so that we can properly annotate it with no-suspension possible / suspension possible.
ObjPtr<mirror::DexCache> dex_cache = GetDexCache();
ObjPtr<mirror::Class> type = dex_cache->GetResolvedType(type_idx);
- if (UNLIKELY(type == nullptr) && resolve) {
+ if (UNLIKELY(type == nullptr)) {
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
- type = class_linker->ResolveType(type_idx, this);
- CHECK(type != nullptr || Thread::Current()->IsExceptionPending());
+ if (resolve) {
+ type = class_linker->ResolveType(type_idx, this);
+ CHECK(type != nullptr || Thread::Current()->IsExceptionPending());
+ } else {
+ type = class_linker->LookupResolvedType(
+ *dex_cache->GetDexFile(), type_idx, dex_cache, GetClassLoader());
+ }
}
return type.Ptr();
}
return string.Ptr();
}
+inline ObjPtr<mirror::Class> ClassLinker::LookupResolvedType(
+ dex::TypeIndex type_idx,
+ ObjPtr<mirror::DexCache> dex_cache,
+ ObjPtr<mirror::ClassLoader> class_loader) {
+ ObjPtr<mirror::Class> type = dex_cache->GetResolvedType(type_idx);
+ if (type == nullptr) {
+ type = Runtime::Current()->GetClassLinker()->LookupResolvedType(
+ *dex_cache->GetDexFile(), type_idx, dex_cache, class_loader);
+ }
+ return type;
+}
+
inline mirror::Class* ClassLinker::ResolveType(dex::TypeIndex type_idx, ArtMethod* referrer) {
Thread::PoisonObjectPointersIfDebug();
if (kIsDebugBuild) {
Handle<mirror::ClassLoader> class_loader(hs.NewHandle(declaring_class->GetClassLoader()));
const DexFile& dex_file = *dex_cache->GetDexFile();
resolved_type = ResolveType(dex_file, type_idx, dex_cache, class_loader);
- // Note: We cannot check here to see whether we added the type to the cache. The type
- // might be an erroneous class, which results in it being hidden from us.
- }
- return resolved_type.Ptr();
-}
-
-inline mirror::Class* ClassLinker::ResolveType(dex::TypeIndex type_idx, ArtField* referrer) {
- Thread::PoisonObjectPointersIfDebug();
- ObjPtr<mirror::Class> declaring_class = referrer->GetDeclaringClass();
- ObjPtr<mirror::DexCache> dex_cache_ptr = declaring_class->GetDexCache();
- ObjPtr<mirror::Class> resolved_type = dex_cache_ptr->GetResolvedType(type_idx);
- if (UNLIKELY(resolved_type == nullptr)) {
- StackHandleScope<2> hs(Thread::Current());
- Handle<mirror::DexCache> dex_cache(hs.NewHandle(dex_cache_ptr));
- Handle<mirror::ClassLoader> class_loader(hs.NewHandle(declaring_class->GetClassLoader()));
- const DexFile& dex_file = *dex_cache->GetDexFile();
- resolved_type = ResolveType(dex_file, type_idx, dex_cache, class_loader);
- // Note: We cannot check here to see whether we added the type to the cache. The type
- // might be an erroneous class, which results in it being hidden from us.
}
return resolved_type.Ptr();
}
}
}
+template <typename T>
+static void CopyDexCachePairs(const std::atomic<mirror::DexCachePair<T>>* src,
+ size_t count,
+ std::atomic<mirror::DexCachePair<T>>* dst) {
+ DCHECK_NE(count, 0u);
+ DCHECK(!src[0].load(std::memory_order_relaxed).object.IsNull() ||
+ src[0].load(std::memory_order_relaxed).index != 0u);
+ for (size_t i = 0; i < count; ++i) {
+ DCHECK_EQ(dst[i].load(std::memory_order_relaxed).index, 0u);
+ DCHECK(dst[i].load(std::memory_order_relaxed).object.IsNull());
+ mirror::DexCachePair<T> source = src[i].load(std::memory_order_relaxed);
+ if (source.index != 0u || !source.object.IsNull()) {
+ dst[i].store(source, std::memory_order_relaxed);
+ }
+ }
+}
+
bool ClassLinker::UpdateAppImageClassLoadersAndDexCaches(
gc::space::ImageSpace* space,
Handle<mirror::ClassLoader> class_loader,
if (dex_file->NumStringIds() < num_strings) {
num_strings = dex_file->NumStringIds();
}
- const size_t num_types = dex_file->NumTypeIds();
+ size_t num_types = mirror::DexCache::kDexCacheTypeCacheSize;
+ if (dex_file->NumTypeIds() < num_types) {
+ num_types = dex_file->NumTypeIds();
+ }
const size_t num_methods = dex_file->NumMethodIds();
const size_t num_fields = dex_file->NumFieldIds();
size_t num_method_types = mirror::DexCache::kDexCacheMethodTypeCacheSize;
mirror::StringDexCacheType* const image_resolved_strings = dex_cache->GetStrings();
mirror::StringDexCacheType* const strings =
reinterpret_cast<mirror::StringDexCacheType*>(raw_arrays + layout.StringsOffset());
- for (size_t j = 0; j < num_strings; ++j) {
- DCHECK_EQ(strings[j].load(std::memory_order_relaxed).index, 0u);
- DCHECK(strings[j].load(std::memory_order_relaxed).object.IsNull());
- strings[j].store(image_resolved_strings[j].load(std::memory_order_relaxed),
- std::memory_order_relaxed);
- }
- mirror::StringDexCachePair::Initialize(strings);
+ CopyDexCachePairs(image_resolved_strings, num_strings, strings);
dex_cache->SetStrings(strings);
}
if (num_types != 0u) {
- GcRoot<mirror::Class>* const image_resolved_types = dex_cache->GetResolvedTypes();
- GcRoot<mirror::Class>* const types =
- reinterpret_cast<GcRoot<mirror::Class>*>(raw_arrays + layout.TypesOffset());
- for (size_t j = 0; kIsDebugBuild && j < num_types; ++j) {
- DCHECK(types[j].IsNull());
- }
- CopyNonNull(image_resolved_types,
- num_types,
- types,
- [](const GcRoot<mirror::Class>& elem) {
- return elem.IsNull();
- });
+ mirror::TypeDexCacheType* const image_resolved_types = dex_cache->GetResolvedTypes();
+ mirror::TypeDexCacheType* const types =
+ reinterpret_cast<mirror::TypeDexCacheType*>(raw_arrays + layout.TypesOffset());
+ CopyDexCachePairs(image_resolved_types, num_types, types);
dex_cache->SetResolvedTypes(types);
}
if (num_methods != 0u) {
mirror::MethodTypeDexCacheType* const method_types =
reinterpret_cast<mirror::MethodTypeDexCacheType*>(
raw_arrays + layout.MethodTypesOffset());
- for (size_t j = 0; j < num_method_types; ++j) {
- DCHECK_EQ(method_types[j].load(std::memory_order_relaxed).index, 0u);
- DCHECK(method_types[j].load(std::memory_order_relaxed).object.IsNull());
- method_types[j].store(
- image_resolved_method_types[j].load(std::memory_order_relaxed),
- std::memory_order_relaxed);
- }
-
- mirror::MethodTypeDexCachePair::Initialize(method_types);
+ CopyDexCachePairs(image_resolved_method_types, num_method_types, method_types);
dex_cache->SetResolvedMethodTypes(method_types);
}
}
}
if (kIsDebugBuild) {
CHECK(new_class_set != nullptr);
- GcRoot<mirror::Class>* const types = dex_cache->GetResolvedTypes();
+ mirror::TypeDexCacheType* const types = dex_cache->GetResolvedTypes();
const size_t num_types = dex_cache->NumResolvedTypes();
- for (int32_t j = 0; j < static_cast<int32_t>(num_types); j++) {
+ for (size_t j = 0; j != num_types; ++j) {
// The image space is not yet added to the heap, avoid read barriers.
- ObjPtr<mirror::Class> klass = types[j].Read();
+ ObjPtr<mirror::Class> klass = types[j].load(std::memory_order_relaxed).object.Read();
if (space->HasAddress(klass.Ptr())) {
DCHECK(!klass->IsErroneous()) << klass->GetStatus();
auto it = new_class_set->Find(ClassTable::TableSlot(klass));
// The current dex file field is bogus, overwrite it so that we can get the dex file in the
// loop below.
dex_cache->SetDexFile(dex_file.get());
- GcRoot<mirror::Class>* const types = dex_cache->GetResolvedTypes();
+ mirror::TypeDexCacheType* const types = dex_cache->GetResolvedTypes();
for (int32_t j = 0, num_types = dex_cache->NumResolvedTypes(); j < num_types; j++) {
- ObjPtr<mirror::Class> klass = types[j].Read();
+ ObjPtr<mirror::Class> klass = types[j].load(std::memory_order_relaxed).object.Read();
if (klass != nullptr) {
DCHECK(!klass->IsErroneous()) << klass->GetStatus();
}
uint32_t utf16_length;
const char* utf8_data = dex_file.StringDataAndUtf16LengthByIdx(string_idx, &utf16_length);
ObjPtr<mirror::String> string = intern_table_->InternStrong(utf16_length, utf8_data);
- dex_cache->SetResolvedString(string_idx, string);
+ if (string != nullptr) {
+ dex_cache->SetResolvedString(string_idx, string);
+ }
return string.Ptr();
}
// Find the class in the loaded classes table.
type = LookupClass(self, descriptor, hash, class_loader.Ptr());
}
+ if (type != nullptr) {
+ if (type->IsResolved()) {
+ dex_cache->SetResolvedType(type_idx, type);
+ } else {
+ type = nullptr;
+ }
+ }
}
- if (type != nullptr && type->IsResolved()) {
- return type.Ptr();
- }
- return nullptr;
+ DCHECK(type == nullptr || type->IsResolved());
+ return type;
}
mirror::Class* ClassLinker::ResolveType(const DexFile& dex_file,
Thread::PoisonObjectPointersIfDebug();
ObjPtr<mirror::Class> resolved = dex_cache->GetResolvedType(type_idx);
if (resolved == nullptr) {
+ // TODO: Avoid this lookup as it duplicates work done in FindClass(). It is here
+ // as a workaround for FastNative JNI to avoid AssertNoPendingException() when
+ // trying to resolve annotations while an exception may be pending. Bug: 34659969
+ resolved = LookupResolvedType(dex_file, type_idx, dex_cache.Get(), class_loader.Get());
+ }
+ if (resolved == nullptr) {
Thread* self = Thread::Current();
const char* descriptor = dex_file.StringByTypeIdx(type_idx);
resolved = FindClass(self, descriptor, class_loader);
REQUIRES_SHARED(Locks::mutator_lock_)
REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
- mirror::Class* ResolveType(dex::TypeIndex type_idx, ArtField* referrer)
- REQUIRES_SHARED(Locks::mutator_lock_)
- REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
-
// Look up a resolved type with the given ID from the DexFile. The ClassLoader is used to search
// for the type, since it may be referenced from but not contained within the given DexFile.
ObjPtr<mirror::Class> LookupResolvedType(const DexFile& dex_file,
ObjPtr<mirror::DexCache> dex_cache,
ObjPtr<mirror::ClassLoader> class_loader)
REQUIRES_SHARED(Locks::mutator_lock_);
+ static ObjPtr<mirror::Class> LookupResolvedType(dex::TypeIndex type_idx,
+ ObjPtr<mirror::DexCache> dex_cache,
+ ObjPtr<mirror::ClassLoader> class_loader)
+ REQUIRES_SHARED(Locks::mutator_lock_);
// Resolve a type with the given ID from the DexFile, storing the
// result in DexCache. The ClassLoader is used to search for the
class_linker_->LookupResolvedType(dex_file, type_idx, dex_cache, class_loader.Get()),
klass);
// Zero out the resolved type and make sure LookupResolvedType still finds it.
- dex_cache->SetResolvedType(type_idx, nullptr);
+ dex_cache->ClearResolvedType(type_idx);
EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
EXPECT_OBJ_PTR_EQ(
class_linker_->LookupResolvedType(dex_file, type_idx, dex_cache, class_loader.Get()),
class_linker_->LookupResolvedType(dex_file, array_idx, dex_cache.Get(), class_loader.Get()),
array_klass);
// Zero out the resolved type and make sure LookupResolvedType() still finds it.
- dex_cache->SetResolvedType(array_idx, nullptr);
+ dex_cache->ClearResolvedType(array_idx);
EXPECT_TRUE(dex_cache->GetResolvedType(array_idx) == nullptr);
EXPECT_OBJ_PTR_EQ(
class_linker_->LookupResolvedType(dex_file, array_idx, dex_cache.Get(), class_loader.Get()),
class_linker_->LookupResolvedType(dex_file, type_idx, dex_cache.Get(), class_loader.Get()),
klass.Get());
// Zero out the resolved type and make sure LookupResolvedType still finds it.
- dex_cache->SetResolvedType(type_idx, nullptr);
+ dex_cache->ClearResolvedType(type_idx);
EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
EXPECT_OBJ_PTR_EQ(
class_linker_->LookupResolvedType(dex_file, type_idx, dex_cache.Get(), class_loader.Get()),
class_linker_->LookupResolvedType(dex_file, type_idx, dex_cache.Get(), class_loader.Get()),
klass.Get());
// Zero out the resolved type and make sure LookupResolvedType() still finds it.
- dex_cache->SetResolvedType(type_idx, nullptr);
+ dex_cache->ClearResolvedType(type_idx);
EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
EXPECT_OBJ_PTR_EQ(
class_linker_->LookupResolvedType(dex_file, type_idx, dex_cache.Get(), class_loader.Get()),
return resolved_method;
} else if (type == kSuper) {
// TODO This lookup is rather slow.
- dex::TypeIndex method_type_idx =
- referrer->GetDexFile()->GetMethodId(method_idx).class_idx_;
- mirror::Class* method_reference_class =
- referrer->GetDexCache()->GetResolvedType(method_type_idx);
+ ObjPtr<mirror::DexCache> dex_cache = referrer->GetDexCache();
+ dex::TypeIndex method_type_idx = dex_cache->GetDexFile()->GetMethodId(method_idx).class_idx_;
+ ObjPtr<mirror::Class> method_reference_class = ClassLinker::LookupResolvedType(
+ method_type_idx, dex_cache, referrer->GetClassLoader());
if (method_reference_class == nullptr) {
// Need to do full type resolution...
return nullptr;
}
dex_cache->FixupStrings<kWithoutReadBarrier>(new_strings, fixup_adapter);
}
- GcRoot<mirror::Class>* types = dex_cache->GetResolvedTypes();
+ mirror::TypeDexCacheType* types = dex_cache->GetResolvedTypes();
if (types != nullptr) {
- GcRoot<mirror::Class>* new_types = fixup_adapter.ForwardObject(types);
+ mirror::TypeDexCacheType* new_types = fixup_adapter.ForwardObject(types);
if (types != new_types) {
dex_cache->SetResolvedTypes(new_types);
}
namespace art {
const uint8_t ImageHeader::kImageMagic[] = { 'a', 'r', 't', '\n' };
-const uint8_t ImageHeader::kImageVersion[] = { '0', '3', '6', '\0' }; // Erroneous resolved class.
+const uint8_t ImageHeader::kImageVersion[] = { '0', '3', '7', '\0' }; // hash-based DexCache types
ImageHeader::ImageHeader(uint32_t image_begin,
uint32_t image_size,
return interfaces->Get(idx);
} else {
dex::TypeIndex type_idx = klass->GetDirectInterfaceTypeIdx(idx);
- ObjPtr<Class> interface = klass->GetDexCache()->GetResolvedType(type_idx);
+ ObjPtr<Class> interface = ClassLinker::LookupResolvedType(
+ type_idx, klass->GetDexCache(), klass->GetClassLoader());
return interface;
}
}
return Class::ComputeClassSize(true, vtable_entries, 0, 0, 0, 0, 0, pointer_size);
}
-inline mirror::String* DexCache::GetResolvedString(dex::StringIndex string_idx) {
+inline uint32_t DexCache::StringSlotIndex(dex::StringIndex string_idx) {
DCHECK_LT(string_idx.index_, GetDexFile()->NumStringIds());
- return StringDexCachePair::Lookup(GetStrings(), string_idx.index_, NumStrings()).Read();
+ const uint32_t slot_idx = string_idx.index_ % kDexCacheStringCacheSize;
+ DCHECK_LT(slot_idx, NumStrings());
+ return slot_idx;
}
-inline void DexCache::SetResolvedString(dex::StringIndex string_idx,
- ObjPtr<mirror::String> resolved) {
- StringDexCachePair::Assign(GetStrings(), string_idx.index_, resolved.Ptr(), NumStrings());
+inline String* DexCache::GetResolvedString(dex::StringIndex string_idx) {
+ return GetStrings()[StringSlotIndex(string_idx)].load(
+ std::memory_order_relaxed).GetObjectForIndex(string_idx.index_);
+}
+
+inline void DexCache::SetResolvedString(dex::StringIndex string_idx, ObjPtr<String> resolved) {
+ DCHECK(resolved != nullptr);
+ GetStrings()[StringSlotIndex(string_idx)].store(
+ StringDexCachePair(resolved, string_idx.index_), std::memory_order_relaxed);
Runtime* const runtime = Runtime::Current();
if (UNLIKELY(runtime->IsActiveTransaction())) {
DCHECK(runtime->IsAotCompiler());
}
inline void DexCache::ClearString(dex::StringIndex string_idx) {
- const uint32_t slot_idx = string_idx.index_ % NumStrings();
DCHECK(Runtime::Current()->IsAotCompiler());
+ uint32_t slot_idx = StringSlotIndex(string_idx);
StringDexCacheType* slot = &GetStrings()[slot_idx];
// This is racy but should only be called from the transactional interpreter.
if (slot->load(std::memory_order_relaxed).index == string_idx.index_) {
- StringDexCachePair cleared(
- nullptr,
- StringDexCachePair::InvalidIndexForSlot(slot_idx));
+ StringDexCachePair cleared(nullptr, StringDexCachePair::InvalidIndexForSlot(slot_idx));
slot->store(cleared, std::memory_order_relaxed);
}
}
+inline uint32_t DexCache::TypeSlotIndex(dex::TypeIndex type_idx) {
+ DCHECK_LT(type_idx.index_, GetDexFile()->NumTypeIds());
+ const uint32_t slot_idx = type_idx.index_ % kDexCacheTypeCacheSize;
+ DCHECK_LT(slot_idx, NumResolvedTypes());
+ return slot_idx;
+}
+
inline Class* DexCache::GetResolvedType(dex::TypeIndex type_idx) {
// It is theorized that a load acquire is not required since obtaining the resolved class will
// always have an address dependency or a lock.
- DCHECK_LT(type_idx.index_, NumResolvedTypes());
- return GetResolvedTypes()[type_idx.index_].Read();
+ return GetResolvedTypes()[TypeSlotIndex(type_idx)].load(
+ std::memory_order_relaxed).GetObjectForIndex(type_idx.index_);
}
inline void DexCache::SetResolvedType(dex::TypeIndex type_idx, ObjPtr<Class> resolved) {
- DCHECK_LT(type_idx.index_, NumResolvedTypes()); // NOTE: Unchecked, i.e. not throwing AIOOB.
+ DCHECK(resolved != nullptr);
// TODO default transaction support.
// Use a release store for SetResolvedType. This is done to prevent other threads from seeing a
// class but not necessarily seeing the loaded members like the static fields array.
// See b/32075261.
- reinterpret_cast<Atomic<GcRoot<mirror::Class>>&>(GetResolvedTypes()[type_idx.index_]).
- StoreRelease(GcRoot<Class>(resolved));
+ GetResolvedTypes()[TypeSlotIndex(type_idx)].store(
+ TypeDexCachePair(resolved, type_idx.index_), std::memory_order_release);
// TODO: Fine-grained marking, so that we don't need to go through all arrays in full.
Runtime::Current()->GetHeap()->WriteBarrierEveryFieldOf(this);
}
-inline MethodType* DexCache::GetResolvedMethodType(uint32_t proto_idx) {
- DCHECK(Runtime::Current()->IsMethodHandlesEnabled());
- DCHECK_LT(proto_idx, GetDexFile()->NumProtoIds());
- return MethodTypeDexCachePair::Lookup(
- GetResolvedMethodTypes(), proto_idx, NumResolvedMethodTypes()).Read();
+inline void DexCache::ClearResolvedType(dex::TypeIndex type_idx) {
+ DCHECK(Runtime::Current()->IsAotCompiler());
+ uint32_t slot_idx = TypeSlotIndex(type_idx);
+ TypeDexCacheType* slot = &GetResolvedTypes()[slot_idx];
+ // This is racy but should only be called from the single-threaded ImageWriter and tests.
+ if (slot->load(std::memory_order_relaxed).index == type_idx.index_) {
+ TypeDexCachePair cleared(nullptr, TypeDexCachePair::InvalidIndexForSlot(slot_idx));
+ slot->store(cleared, std::memory_order_relaxed);
+ }
}
-inline void DexCache::SetResolvedMethodType(uint32_t proto_idx, MethodType* resolved) {
+inline uint32_t DexCache::MethodTypeSlotIndex(uint32_t proto_idx) {
DCHECK(Runtime::Current()->IsMethodHandlesEnabled());
DCHECK_LT(proto_idx, GetDexFile()->NumProtoIds());
+ const uint32_t slot_idx = proto_idx % kDexCacheMethodTypeCacheSize;
+ DCHECK_LT(slot_idx, NumResolvedMethodTypes());
+ return slot_idx;
+}
- MethodTypeDexCachePair::Assign(GetResolvedMethodTypes(), proto_idx, resolved,
- NumResolvedMethodTypes());
+inline MethodType* DexCache::GetResolvedMethodType(uint32_t proto_idx) {
+ return GetResolvedMethodTypes()[MethodTypeSlotIndex(proto_idx)].load(
+ std::memory_order_relaxed).GetObjectForIndex(proto_idx);
+}
+
+inline void DexCache::SetResolvedMethodType(uint32_t proto_idx, MethodType* resolved) {
+ DCHECK(resolved != nullptr);
+ GetResolvedMethodTypes()[MethodTypeSlotIndex(proto_idx)].store(
+ MethodTypeDexCachePair(resolved, proto_idx), std::memory_order_relaxed);
// TODO: Fine-grained marking, so that we don't need to go through all arrays in full.
Runtime::Current()->GetHeap()->WriteBarrierEveryFieldOf(this);
}
VisitInstanceFieldsReferences<kVerifyFlags, kReadBarrierOption>(klass, visitor);
// Visit arrays after.
if (kVisitNativeRoots) {
- VisitDexCachePairs<mirror::String, kReadBarrierOption, Visitor>(
+ VisitDexCachePairs<String, kReadBarrierOption, Visitor>(
GetStrings(), NumStrings(), visitor);
- GcRoot<mirror::Class>* resolved_types = GetResolvedTypes();
- for (size_t i = 0, num_types = NumResolvedTypes(); i != num_types; ++i) {
- visitor.VisitRootIfNonNull(resolved_types[i].AddressWithoutBarrier());
- }
+ VisitDexCachePairs<Class, kReadBarrierOption, Visitor>(
+ GetResolvedTypes(), NumResolvedTypes(), visitor);
- VisitDexCachePairs<mirror::MethodType, kReadBarrierOption, Visitor>(
+ VisitDexCachePairs<MethodType, kReadBarrierOption, Visitor>(
GetResolvedMethodTypes(), NumResolvedMethodTypes(), visitor);
}
}
template <ReadBarrierOption kReadBarrierOption, typename Visitor>
-inline void DexCache::FixupStrings(mirror::StringDexCacheType* dest, const Visitor& visitor) {
- mirror::StringDexCacheType* src = GetStrings();
+inline void DexCache::FixupStrings(StringDexCacheType* dest, const Visitor& visitor) {
+ StringDexCacheType* src = GetStrings();
for (size_t i = 0, count = NumStrings(); i < count; ++i) {
StringDexCachePair source = src[i].load(std::memory_order_relaxed);
- mirror::String* ptr = source.object.Read<kReadBarrierOption>();
- mirror::String* new_source = visitor(ptr);
+ String* ptr = source.object.Read<kReadBarrierOption>();
+ String* new_source = visitor(ptr);
source.object = GcRoot<String>(new_source);
dest[i].store(source, std::memory_order_relaxed);
}
}
template <ReadBarrierOption kReadBarrierOption, typename Visitor>
-inline void DexCache::FixupResolvedTypes(GcRoot<mirror::Class>* dest, const Visitor& visitor) {
- GcRoot<mirror::Class>* src = GetResolvedTypes();
+inline void DexCache::FixupResolvedTypes(TypeDexCacheType* dest, const Visitor& visitor) {
+ TypeDexCacheType* src = GetResolvedTypes();
for (size_t i = 0, count = NumResolvedTypes(); i < count; ++i) {
- mirror::Class* source = src[i].Read<kReadBarrierOption>();
- mirror::Class* new_source = visitor(source);
- dest[i] = GcRoot<mirror::Class>(new_source);
+ TypeDexCachePair source = src[i].load(std::memory_order_relaxed);
+ Class* ptr = source.object.Read<kReadBarrierOption>();
+ Class* new_source = visitor(ptr);
+ source.object = GcRoot<Class>(new_source);
+ dest[i].store(source, std::memory_order_relaxed);
}
}
template <ReadBarrierOption kReadBarrierOption, typename Visitor>
-inline void DexCache::FixupResolvedMethodTypes(mirror::MethodTypeDexCacheType* dest,
+inline void DexCache::FixupResolvedMethodTypes(MethodTypeDexCacheType* dest,
const Visitor& visitor) {
- mirror::MethodTypeDexCacheType* src = GetResolvedMethodTypes();
+ MethodTypeDexCacheType* src = GetResolvedMethodTypes();
for (size_t i = 0, count = NumResolvedMethodTypes(); i < count; ++i) {
MethodTypeDexCachePair source = src[i].load(std::memory_order_relaxed);
- mirror::MethodType* ptr = source.object.Read<kReadBarrierOption>();
- mirror::MethodType* new_source = visitor(ptr);
+ MethodType* ptr = source.object.Read<kReadBarrierOption>();
+ MethodType* new_source = visitor(ptr);
source.object = GcRoot<MethodType>(new_source);
dest[i].store(source, std::memory_order_relaxed);
}
mirror::StringDexCacheType* strings = (dex_file->NumStringIds() == 0u) ? nullptr :
reinterpret_cast<mirror::StringDexCacheType*>(raw_arrays + layout.StringsOffset());
- GcRoot<mirror::Class>* types = (dex_file->NumTypeIds() == 0u) ? nullptr :
- reinterpret_cast<GcRoot<mirror::Class>*>(raw_arrays + layout.TypesOffset());
+ mirror::TypeDexCacheType* types = (dex_file->NumTypeIds() == 0u) ? nullptr :
+ reinterpret_cast<mirror::TypeDexCacheType*>(raw_arrays + layout.TypesOffset());
ArtMethod** methods = (dex_file->NumMethodIds() == 0u) ? nullptr :
reinterpret_cast<ArtMethod**>(raw_arrays + layout.MethodsOffset());
ArtField** fields = (dex_file->NumFieldIds() == 0u) ? nullptr :
if (dex_file->NumStringIds() < num_strings) {
num_strings = dex_file->NumStringIds();
}
+ size_t num_types = mirror::DexCache::kDexCacheTypeCacheSize;
+ if (dex_file->NumTypeIds() < num_types) {
+ num_types = dex_file->NumTypeIds();
+ }
// Note that we allocate the method type dex caches regardless of this flag,
// and we make sure here that they're not used by the runtime. This is in the
CHECK_EQ(strings[i].load(std::memory_order_relaxed).index, 0u);
CHECK(strings[i].load(std::memory_order_relaxed).object.IsNull());
}
- for (size_t i = 0; i < dex_file->NumTypeIds(); ++i) {
- CHECK(types[i].IsNull());
+ for (size_t i = 0; i < num_types; ++i) {
+ CHECK_EQ(types[i].load(std::memory_order_relaxed).index, 0u);
+ CHECK(types[i].load(std::memory_order_relaxed).object.IsNull());
}
for (size_t i = 0; i < dex_file->NumMethodIds(); ++i) {
CHECK(mirror::DexCache::GetElementPtrSize(methods, i, image_pointer_size) == nullptr);
if (strings != nullptr) {
mirror::StringDexCachePair::Initialize(strings);
}
+ if (types != nullptr) {
+ mirror::TypeDexCachePair::Initialize(types);
+ }
if (method_types != nullptr) {
mirror::MethodTypeDexCachePair::Initialize(method_types);
}
strings,
num_strings,
types,
- dex_file->NumTypeIds(),
+ num_types,
methods,
dex_file->NumMethodIds(),
fields,
ObjPtr<String> location,
StringDexCacheType* strings,
uint32_t num_strings,
- GcRoot<Class>* resolved_types,
+ TypeDexCacheType* resolved_types,
uint32_t num_resolved_types,
ArtMethod** resolved_methods,
uint32_t num_resolved_methods,
#define ART_RUNTIME_MIRROR_DEX_CACHE_H_
#include "array.h"
-#include "art_field.h"
-#include "class.h"
+#include "base/bit_utils.h"
#include "dex_file_types.h"
#include "object.h"
#include "object_array.h"
namespace art {
+class ArtField;
class ArtMethod;
struct DexCacheOffsets;
class DexFile;
namespace mirror {
+class Class;
class MethodType;
class String;
// it's always non-null if the id branch succeeds (except for the 0th id).
// Set the initial state for the 0th entry to be {0,1} which is guaranteed to fail
// the lookup id == stored id branch.
- DexCachePair(T* object, uint32_t index)
+ DexCachePair(ObjPtr<T> object, uint32_t index)
: object(object),
index(index) {}
DexCachePair() = default;
dex_cache[0].store(first_elem, std::memory_order_relaxed);
}
- static GcRoot<T> Lookup(std::atomic<DexCachePair<T>>* dex_cache,
- uint32_t idx,
- uint32_t cache_size) {
- DCHECK_NE(cache_size, 0u);
- DexCachePair<T> element = dex_cache[idx % cache_size].load(std::memory_order_relaxed);
- if (idx != element.index) {
- return GcRoot<T>(nullptr);
- }
-
- DCHECK(!element.object.IsNull());
- return element.object;
- }
-
- static void Assign(std::atomic<DexCachePair<T>>* dex_cache,
- uint32_t idx,
- T* object,
- uint32_t cache_size) {
- DCHECK_LT(idx % cache_size, cache_size);
- dex_cache[idx % cache_size].store(
- DexCachePair<T>(object, idx), std::memory_order_relaxed);
- }
-
static uint32_t InvalidIndexForSlot(uint32_t slot) {
// Since the cache size is a power of two, 0 will always map to slot 0.
// Use 1 for slot 0 and 0 for all other slots.
return (slot == 0) ? 1u : 0u;
}
+
+ T* GetObjectForIndex(uint32_t idx) REQUIRES_SHARED(Locks::mutator_lock_) {
+ if (idx != index) {
+ return nullptr;
+ }
+ DCHECK(!object.IsNull());
+ return object.Read();
+ }
};
-using StringDexCachePair = DexCachePair<mirror::String>;
+using TypeDexCachePair = DexCachePair<Class>;
+using TypeDexCacheType = std::atomic<TypeDexCachePair>;
+
+using StringDexCachePair = DexCachePair<String>;
using StringDexCacheType = std::atomic<StringDexCachePair>;
-using MethodTypeDexCachePair = DexCachePair<mirror::MethodType>;
+using MethodTypeDexCachePair = DexCachePair<MethodType>;
using MethodTypeDexCacheType = std::atomic<MethodTypeDexCachePair>;
// C++ mirror of java.lang.DexCache.
// Size of java.lang.DexCache.class.
static uint32_t ClassSize(PointerSize pointer_size);
+ // Size of type dex cache. Needs to be a power of 2 for entrypoint assumptions to hold.
+ static constexpr size_t kDexCacheTypeCacheSize = 1024;
+ static_assert(IsPowerOfTwo(kDexCacheTypeCacheSize),
+ "Type dex cache size is not a power of 2.");
+
// Size of string dex cache. Needs to be a power of 2 for entrypoint assumptions to hold.
static constexpr size_t kDexCacheStringCacheSize = 1024;
static_assert(IsPowerOfTwo(kDexCacheStringCacheSize),
static_assert(IsPowerOfTwo(kDexCacheMethodTypeCacheSize),
"MethodType dex cache size is not a power of 2.");
+ static constexpr size_t StaticTypeSize() {
+ return kDexCacheTypeCacheSize;
+ }
+
static constexpr size_t StaticStringSize() {
return kDexCacheStringCacheSize;
}
REQUIRES_SHARED(Locks::mutator_lock_);
template <ReadBarrierOption kReadBarrierOption = kWithReadBarrier, typename Visitor>
- void FixupResolvedTypes(GcRoot<mirror::Class>* dest, const Visitor& visitor)
+ void FixupResolvedTypes(TypeDexCacheType* dest, const Visitor& visitor)
REQUIRES_SHARED(Locks::mutator_lock_);
template <ReadBarrierOption kReadBarrierOption = kWithReadBarrier, typename Visitor>
return OFFSET_OF_OBJECT_MEMBER(DexCache, num_resolved_method_types_);
}
- mirror::String* GetResolvedString(dex::StringIndex string_idx) ALWAYS_INLINE
+ String* GetResolvedString(dex::StringIndex string_idx) ALWAYS_INLINE
REQUIRES_SHARED(Locks::mutator_lock_);
void SetResolvedString(dex::StringIndex string_idx, ObjPtr<mirror::String> resolved) ALWAYS_INLINE
void SetResolvedType(dex::TypeIndex type_idx, ObjPtr<Class> resolved)
REQUIRES_SHARED(Locks::mutator_lock_);
+ void ClearResolvedType(dex::TypeIndex type_idx) REQUIRES_SHARED(Locks::mutator_lock_);
+
ALWAYS_INLINE ArtMethod* GetResolvedMethod(uint32_t method_idx, PointerSize ptr_size)
REQUIRES_SHARED(Locks::mutator_lock_);
SetFieldPtr<false>(StringsOffset(), strings);
}
- GcRoot<Class>* GetResolvedTypes() ALWAYS_INLINE REQUIRES_SHARED(Locks::mutator_lock_) {
- return GetFieldPtr<GcRoot<Class>*>(ResolvedTypesOffset());
+ TypeDexCacheType* GetResolvedTypes() ALWAYS_INLINE REQUIRES_SHARED(Locks::mutator_lock_) {
+ return GetFieldPtr<TypeDexCacheType*>(ResolvedTypesOffset());
}
- void SetResolvedTypes(GcRoot<Class>* resolved_types)
+ void SetResolvedTypes(TypeDexCacheType* resolved_types)
ALWAYS_INLINE
REQUIRES_SHARED(Locks::mutator_lock_) {
SetFieldPtr<false>(ResolvedTypesOffset(), resolved_types);
SetFieldPtr<false>(OFFSET_OF_OBJECT_MEMBER(DexCache, dex_file_), dex_file);
}
- void SetLocation(ObjPtr<mirror::String> location) REQUIRES_SHARED(Locks::mutator_lock_);
+ void SetLocation(ObjPtr<String> location) REQUIRES_SHARED(Locks::mutator_lock_);
// NOTE: Get/SetElementPtrSize() are intended for working with ArtMethod** and ArtField**
// provided by GetResolvedMethods/Fields() and ArtMethod::GetDexCacheResolvedMethods(),
ObjPtr<String> location,
StringDexCacheType* strings,
uint32_t num_strings,
- GcRoot<Class>* resolved_types,
+ TypeDexCacheType* resolved_types,
uint32_t num_resolved_types,
ArtMethod** resolved_methods,
uint32_t num_resolved_methods,
PointerSize pointer_size)
REQUIRES_SHARED(Locks::mutator_lock_);
+ uint32_t StringSlotIndex(dex::StringIndex string_idx) REQUIRES_SHARED(Locks::mutator_lock_);
+ uint32_t TypeSlotIndex(dex::TypeIndex type_idx) REQUIRES_SHARED(Locks::mutator_lock_);
+ uint32_t MethodTypeSlotIndex(uint32_t proto_idx) REQUIRES_SHARED(Locks::mutator_lock_);
+
// Visit instance fields of the dex cache as well as its associated arrays.
template <bool kVisitNativeRoots,
VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier,
typename Visitor>
- void VisitReferences(ObjPtr<mirror::Class> klass, const Visitor& visitor)
+ void VisitReferences(ObjPtr<Class> klass, const Visitor& visitor)
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(Locks::heap_bitmap_lock_);
HeapReference<Object> dex_;
uint64_t resolved_method_types_; // std::atomic<MethodTypeDexCachePair>* array with
// num_resolved_method_types_ elements.
uint64_t resolved_methods_; // ArtMethod*, array with num_resolved_methods_ elements.
- uint64_t resolved_types_; // GcRoot<Class>*, array with num_resolved_types_ elements.
+ uint64_t resolved_types_; // TypeDexCacheType*, array with num_resolved_types_ elements.
uint64_t strings_; // std::atomic<StringDexCachePair>*, array with num_strings_
// elements.
EXPECT_TRUE(dex_cache->StaticStringSize() == dex_cache->NumStrings()
|| java_lang_dex_file_->NumStringIds() == dex_cache->NumStrings());
- EXPECT_EQ(java_lang_dex_file_->NumTypeIds(), dex_cache->NumResolvedTypes());
+ EXPECT_TRUE(dex_cache->StaticTypeSize() == dex_cache->NumResolvedTypes()
+ || java_lang_dex_file_->NumTypeIds() == dex_cache->NumResolvedTypes());
EXPECT_EQ(java_lang_dex_file_->NumMethodIds(), dex_cache->NumResolvedMethods());
EXPECT_EQ(java_lang_dex_file_->NumFieldIds(), dex_cache->NumResolvedFields());
EXPECT_TRUE(dex_cache->StaticMethodTypeSize() == dex_cache->NumResolvedMethodTypes()
static jobject DexCache_getResolvedType(JNIEnv* env, jobject javaDexCache, jint type_index) {
ScopedFastNativeObjectAccess soa(env);
ObjPtr<mirror::DexCache> dex_cache = soa.Decode<mirror::DexCache>(javaDexCache);
- CHECK_LT(static_cast<size_t>(type_index), dex_cache->NumResolvedTypes());
+ CHECK_LT(static_cast<size_t>(type_index), dex_cache->GetDexFile()->NumTypeIds());
return soa.AddLocalReference<jobject>(dex_cache->GetResolvedType(dex::TypeIndex(type_index)));
}
class PACKED(4) OatHeader {
public:
static constexpr uint8_t kOatMagic[] = { 'o', 'a', 't', '\n' };
- static constexpr uint8_t kOatVersion[] = { '1', '1', '0', '\0' }; // Clean up code info change.
+ static constexpr uint8_t kOatVersion[] = { '1', '1', '1', '\0' }; // hash-based DexCache types.
static constexpr const char* kImageLocationKey = "image-location";
static constexpr const char* kDex2OatCmdLineKey = "dex2oat-cmdline";
: DexCacheArraysLayout(pointer_size, dex_file->GetHeader()) {
}
-inline constexpr size_t DexCacheArraysLayout::Alignment() {
- // GcRoot<> alignment is 4, i.e. lower than or equal to the pointer alignment.
- static_assert(alignof(GcRoot<mirror::Class>) == 4, "Expecting alignof(GcRoot<>) == 4");
+constexpr size_t DexCacheArraysLayout::Alignment() {
+ // mirror::Type/String/MethodTypeDexCacheType alignment is 8,
+ // i.e. higher than or equal to the pointer alignment.
+ static_assert(alignof(mirror::TypeDexCacheType) == 8,
+ "Expecting alignof(ClassDexCacheType) == 8");
static_assert(alignof(mirror::StringDexCacheType) == 8,
"Expecting alignof(StringDexCacheType) == 8");
static_assert(alignof(mirror::MethodTypeDexCacheType) == 8,
}
template <typename T>
-static constexpr PointerSize GcRootAsPointerSize() {
+constexpr PointerSize GcRootAsPointerSize() {
static_assert(sizeof(GcRoot<T>) == 4U, "Unexpected GcRoot size");
return PointerSize::k32;
}
inline size_t DexCacheArraysLayout::TypeOffset(dex::TypeIndex type_idx) const {
- return types_offset_ + ElementOffset(GcRootAsPointerSize<mirror::Class>(), type_idx.index_);
+ return types_offset_ + ElementOffset(PointerSize::k64,
+ type_idx.index_ % mirror::DexCache::kDexCacheTypeCacheSize);
}
inline size_t DexCacheArraysLayout::TypesSize(size_t num_elements) const {
- return ArraySize(GcRootAsPointerSize<mirror::Class>(), num_elements);
+ size_t cache_size = mirror::DexCache::kDexCacheTypeCacheSize;
+ if (num_elements < cache_size) {
+ cache_size = num_elements;
+ }
+ return ArraySize(PointerSize::k64, cache_size);
}
inline size_t DexCacheArraysLayout::TypesAlignment() const {
const RegType& res_type = ResolveClassAndCheckAccess(type_idx);
if (res_type.IsConflict()) {
// If this is a primitive type, fail HARD.
- mirror::Class* klass = dex_cache_->GetResolvedType(type_idx);
+ ObjPtr<mirror::Class> klass =
+ ClassLinker::LookupResolvedType(type_idx, dex_cache_.Get(), class_loader_.Get());
if (klass != nullptr && klass->IsPrimitive()) {
Fail(VERIFY_ERROR_BAD_CLASS_HARD) << "using primitive type "
<< dex_file_->StringByTypeIdx(type_idx) << " in instanceof in "
}
const RegType& MethodVerifier::ResolveClassAndCheckAccess(dex::TypeIndex class_idx) {
- mirror::Class* klass = dex_cache_->GetResolvedType(class_idx);
+ mirror::Class* klass = can_load_classes_
+ ? Runtime::Current()->GetClassLinker()->ResolveType(
+ *dex_file_, class_idx, dex_cache_, class_loader_)
+ : ClassLinker::LookupResolvedType(class_idx, dex_cache_.Get(), class_loader_.Get()).Ptr();
+ if (can_load_classes_ && klass == nullptr) {
+ DCHECK(self_->IsExceptionPending());
+ self_->ClearException();
+ }
const RegType* result = nullptr;
- if (klass != nullptr) {
+ if (klass != nullptr && !klass->IsErroneous()) {
bool precise = klass->CannotBeAssignedFromOtherTypes();
if (precise && !IsInstantiableOrPrimitive(klass)) {
const char* descriptor = dex_file_->StringByTypeIdx(class_idx);
<< "' in " << GetDeclaringClass();
return *result;
}
- if (klass == nullptr && !result->IsUnresolvedTypes()) {
- klass = result->GetClass();
- dex_cache_->SetResolvedType(class_idx, klass);
- }
// Record result of class resolution attempt.
VerifierDeps::MaybeRecordClassResolution(*dex_file_, class_idx, klass);
Class<?> timpl = Class.forName("TestImplementation", false, mainLoader);
// Clear the dex cache resolved types to force a proper lookup the next time
// we need to find TestInterface.
- // TODO: Enable clearing the dex cache when we switch to the hash-based type array
- // and do a proper lookup. Currently, ClassLinker fully relies on the DexCache.
- if (false) {
- clearResolvedTypes(timpl);
- }
+ clearResolvedTypes(timpl);
// Force intialization of TestClass2. This expects the interface type to be
// resolved and found through simple lookup.
ScopedObjectAccess soa(Thread::Current());
mirror::DexCache* dex_cache = soa.Decode<mirror::Class>(cls)->GetDexCache();
for (size_t i = 0, num_types = dex_cache->NumResolvedTypes(); i != num_types; ++i) {
- dex_cache->SetResolvedType(dex::TypeIndex(i), ObjPtr<mirror::Class>(nullptr));
+ mirror::TypeDexCachePair cleared(nullptr, mirror::TypeDexCachePair::InvalidIndexForSlot(i));
+ dex_cache->GetResolvedTypes()[i].store(cleared, std::memory_order_relaxed);
}
}
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