851 lines
34 KiB
C++
851 lines
34 KiB
C++
/*
|
|
* Copyright (C) 2011 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "art_method.h"
|
|
|
|
#include <cstddef>
|
|
|
|
#include "android-base/stringprintf.h"
|
|
|
|
#include "arch/context.h"
|
|
#include "art_method-inl.h"
|
|
#include "base/stringpiece.h"
|
|
#include "class_linker-inl.h"
|
|
#include "debugger.h"
|
|
#include "dex_file-inl.h"
|
|
#include "dex_file_annotations.h"
|
|
#include "dex_instruction.h"
|
|
#include "entrypoints/runtime_asm_entrypoints.h"
|
|
#include "gc/accounting/card_table-inl.h"
|
|
#include "interpreter/interpreter.h"
|
|
#include "jit/jit.h"
|
|
#include "jit/jit_code_cache.h"
|
|
#include "jit/profiling_info.h"
|
|
#include "jni_internal.h"
|
|
#include "mirror/class-inl.h"
|
|
#include "mirror/class_ext.h"
|
|
#include "mirror/executable.h"
|
|
#include "mirror/object_array-inl.h"
|
|
#include "mirror/object-inl.h"
|
|
#include "mirror/string.h"
|
|
#include "oat_file-inl.h"
|
|
#include "runtime_callbacks.h"
|
|
#include "scoped_thread_state_change-inl.h"
|
|
#include "vdex_file.h"
|
|
#include "well_known_classes.h"
|
|
|
|
namespace art {
|
|
|
|
using android::base::StringPrintf;
|
|
|
|
extern "C" void art_quick_invoke_stub(ArtMethod*, uint32_t*, uint32_t, Thread*, JValue*,
|
|
const char*);
|
|
extern "C" void art_quick_invoke_static_stub(ArtMethod*, uint32_t*, uint32_t, Thread*, JValue*,
|
|
const char*);
|
|
|
|
DEFINE_RUNTIME_DEBUG_FLAG(ArtMethod, kCheckDeclaringClassState);
|
|
|
|
// Enforce that we he have the right index for runtime methods.
|
|
static_assert(ArtMethod::kRuntimeMethodDexMethodIndex == DexFile::kDexNoIndex,
|
|
"Wrong runtime-method dex method index");
|
|
|
|
ArtMethod* ArtMethod::GetCanonicalMethod(PointerSize pointer_size) {
|
|
if (LIKELY(!IsDefault())) {
|
|
return this;
|
|
} else {
|
|
mirror::Class* declaring_class = GetDeclaringClass();
|
|
DCHECK(declaring_class->IsInterface());
|
|
ArtMethod* ret = declaring_class->FindInterfaceMethod(declaring_class->GetDexCache(),
|
|
GetDexMethodIndex(),
|
|
pointer_size);
|
|
DCHECK(ret != nullptr);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
ArtMethod* ArtMethod::GetNonObsoleteMethod() {
|
|
DCHECK_EQ(kRuntimePointerSize, Runtime::Current()->GetClassLinker()->GetImagePointerSize());
|
|
if (LIKELY(!IsObsolete())) {
|
|
return this;
|
|
} else if (IsDirect()) {
|
|
return &GetDeclaringClass()->GetDirectMethodsSlice(kRuntimePointerSize)[GetMethodIndex()];
|
|
} else {
|
|
return GetDeclaringClass()->GetVTableEntry(GetMethodIndex(), kRuntimePointerSize);
|
|
}
|
|
}
|
|
|
|
ArtMethod* ArtMethod::GetSingleImplementation(PointerSize pointer_size) {
|
|
if (!IsAbstract()) {
|
|
// A non-abstract's single implementation is itself.
|
|
return this;
|
|
}
|
|
return reinterpret_cast<ArtMethod*>(GetDataPtrSize(pointer_size));
|
|
}
|
|
|
|
ArtMethod* ArtMethod::FromReflectedMethod(const ScopedObjectAccessAlreadyRunnable& soa,
|
|
jobject jlr_method) {
|
|
ObjPtr<mirror::Executable> executable = soa.Decode<mirror::Executable>(jlr_method);
|
|
DCHECK(executable != nullptr);
|
|
return executable->GetArtMethod();
|
|
}
|
|
|
|
mirror::DexCache* ArtMethod::GetObsoleteDexCache() {
|
|
DCHECK(!Runtime::Current()->IsAotCompiler()) << PrettyMethod();
|
|
DCHECK(IsObsolete());
|
|
ObjPtr<mirror::ClassExt> ext(GetDeclaringClass()->GetExtData());
|
|
CHECK(!ext.IsNull());
|
|
ObjPtr<mirror::PointerArray> obsolete_methods(ext->GetObsoleteMethods());
|
|
CHECK(!obsolete_methods.IsNull());
|
|
DCHECK(ext->GetObsoleteDexCaches() != nullptr);
|
|
int32_t len = obsolete_methods->GetLength();
|
|
DCHECK_EQ(len, ext->GetObsoleteDexCaches()->GetLength());
|
|
// Using kRuntimePointerSize (instead of using the image's pointer size) is fine since images
|
|
// should never have obsolete methods in them so they should always be the same.
|
|
PointerSize pointer_size = kRuntimePointerSize;
|
|
DCHECK_EQ(kRuntimePointerSize, Runtime::Current()->GetClassLinker()->GetImagePointerSize());
|
|
for (int32_t i = 0; i < len; i++) {
|
|
if (this == obsolete_methods->GetElementPtrSize<ArtMethod*>(i, pointer_size)) {
|
|
return ext->GetObsoleteDexCaches()->Get(i);
|
|
}
|
|
}
|
|
LOG(FATAL) << "This method does not appear in the obsolete map of its class!";
|
|
UNREACHABLE();
|
|
}
|
|
|
|
uint16_t ArtMethod::FindObsoleteDexClassDefIndex() {
|
|
DCHECK(!Runtime::Current()->IsAotCompiler()) << PrettyMethod();
|
|
DCHECK(IsObsolete());
|
|
const DexFile* dex_file = GetDexFile();
|
|
const dex::TypeIndex declaring_class_type = dex_file->GetMethodId(GetDexMethodIndex()).class_idx_;
|
|
const DexFile::ClassDef* class_def = dex_file->FindClassDef(declaring_class_type);
|
|
CHECK(class_def != nullptr);
|
|
return dex_file->GetIndexForClassDef(*class_def);
|
|
}
|
|
|
|
mirror::String* ArtMethod::GetNameAsString(Thread* self) {
|
|
CHECK(!IsProxyMethod());
|
|
StackHandleScope<1> hs(self);
|
|
Handle<mirror::DexCache> dex_cache(hs.NewHandle(GetDexCache()));
|
|
auto* dex_file = dex_cache->GetDexFile();
|
|
uint32_t dex_method_idx = GetDexMethodIndex();
|
|
const DexFile::MethodId& method_id = dex_file->GetMethodId(dex_method_idx);
|
|
return Runtime::Current()->GetClassLinker()->ResolveString(*dex_file, method_id.name_idx_,
|
|
dex_cache);
|
|
}
|
|
|
|
void ArtMethod::ThrowInvocationTimeError() {
|
|
DCHECK(!IsInvokable());
|
|
// NOTE: IsDefaultConflicting must be first since the actual method might or might not be abstract
|
|
// due to the way we select it.
|
|
if (IsDefaultConflicting()) {
|
|
ThrowIncompatibleClassChangeErrorForMethodConflict(this);
|
|
} else {
|
|
DCHECK(IsAbstract());
|
|
ThrowAbstractMethodError(this);
|
|
}
|
|
}
|
|
|
|
InvokeType ArtMethod::GetInvokeType() {
|
|
// TODO: kSuper?
|
|
if (IsStatic()) {
|
|
return kStatic;
|
|
} else if (GetDeclaringClass()->IsInterface()) {
|
|
return kInterface;
|
|
} else if (IsDirect()) {
|
|
return kDirect;
|
|
} else {
|
|
return kVirtual;
|
|
}
|
|
}
|
|
|
|
size_t ArtMethod::NumArgRegisters(const StringPiece& shorty) {
|
|
CHECK_LE(1U, shorty.length());
|
|
uint32_t num_registers = 0;
|
|
for (size_t i = 1; i < shorty.length(); ++i) {
|
|
char ch = shorty[i];
|
|
if (ch == 'D' || ch == 'J') {
|
|
num_registers += 2;
|
|
} else {
|
|
num_registers += 1;
|
|
}
|
|
}
|
|
return num_registers;
|
|
}
|
|
|
|
bool ArtMethod::HasSameNameAndSignature(ArtMethod* other) {
|
|
ScopedAssertNoThreadSuspension ants("HasSameNameAndSignature");
|
|
const DexFile* dex_file = GetDexFile();
|
|
const DexFile::MethodId& mid = dex_file->GetMethodId(GetDexMethodIndex());
|
|
if (GetDexCache() == other->GetDexCache()) {
|
|
const DexFile::MethodId& mid2 = dex_file->GetMethodId(other->GetDexMethodIndex());
|
|
return mid.name_idx_ == mid2.name_idx_ && mid.proto_idx_ == mid2.proto_idx_;
|
|
}
|
|
const DexFile* dex_file2 = other->GetDexFile();
|
|
const DexFile::MethodId& mid2 = dex_file2->GetMethodId(other->GetDexMethodIndex());
|
|
if (!DexFileStringEquals(dex_file, mid.name_idx_, dex_file2, mid2.name_idx_)) {
|
|
return false; // Name mismatch.
|
|
}
|
|
return dex_file->GetMethodSignature(mid) == dex_file2->GetMethodSignature(mid2);
|
|
}
|
|
|
|
ArtMethod* ArtMethod::FindOverriddenMethod(PointerSize pointer_size) {
|
|
if (IsStatic()) {
|
|
return nullptr;
|
|
}
|
|
mirror::Class* declaring_class = GetDeclaringClass();
|
|
mirror::Class* super_class = declaring_class->GetSuperClass();
|
|
uint16_t method_index = GetMethodIndex();
|
|
ArtMethod* result = nullptr;
|
|
// Did this method override a super class method? If so load the result from the super class'
|
|
// vtable
|
|
if (super_class->HasVTable() && method_index < super_class->GetVTableLength()) {
|
|
result = super_class->GetVTableEntry(method_index, pointer_size);
|
|
} else {
|
|
// Method didn't override superclass method so search interfaces
|
|
if (IsProxyMethod()) {
|
|
result = GetInterfaceMethodIfProxy(pointer_size);
|
|
DCHECK(result != nullptr);
|
|
} else {
|
|
mirror::IfTable* iftable = GetDeclaringClass()->GetIfTable();
|
|
for (size_t i = 0; i < iftable->Count() && result == nullptr; i++) {
|
|
mirror::Class* interface = iftable->GetInterface(i);
|
|
for (ArtMethod& interface_method : interface->GetVirtualMethods(pointer_size)) {
|
|
if (HasSameNameAndSignature(interface_method.GetInterfaceMethodIfProxy(pointer_size))) {
|
|
result = &interface_method;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
DCHECK(result == nullptr ||
|
|
GetInterfaceMethodIfProxy(pointer_size)->HasSameNameAndSignature(
|
|
result->GetInterfaceMethodIfProxy(pointer_size)));
|
|
return result;
|
|
}
|
|
|
|
uint32_t ArtMethod::FindDexMethodIndexInOtherDexFile(const DexFile& other_dexfile,
|
|
uint32_t name_and_signature_idx) {
|
|
const DexFile* dexfile = GetDexFile();
|
|
const uint32_t dex_method_idx = GetDexMethodIndex();
|
|
const DexFile::MethodId& mid = dexfile->GetMethodId(dex_method_idx);
|
|
const DexFile::MethodId& name_and_sig_mid = other_dexfile.GetMethodId(name_and_signature_idx);
|
|
DCHECK_STREQ(dexfile->GetMethodName(mid), other_dexfile.GetMethodName(name_and_sig_mid));
|
|
DCHECK_EQ(dexfile->GetMethodSignature(mid), other_dexfile.GetMethodSignature(name_and_sig_mid));
|
|
if (dexfile == &other_dexfile) {
|
|
return dex_method_idx;
|
|
}
|
|
const char* mid_declaring_class_descriptor = dexfile->StringByTypeIdx(mid.class_idx_);
|
|
const DexFile::TypeId* other_type_id = other_dexfile.FindTypeId(mid_declaring_class_descriptor);
|
|
if (other_type_id != nullptr) {
|
|
const DexFile::MethodId* other_mid = other_dexfile.FindMethodId(
|
|
*other_type_id, other_dexfile.GetStringId(name_and_sig_mid.name_idx_),
|
|
other_dexfile.GetProtoId(name_and_sig_mid.proto_idx_));
|
|
if (other_mid != nullptr) {
|
|
return other_dexfile.GetIndexForMethodId(*other_mid);
|
|
}
|
|
}
|
|
return DexFile::kDexNoIndex;
|
|
}
|
|
|
|
uint32_t ArtMethod::FindCatchBlock(Handle<mirror::Class> exception_type,
|
|
uint32_t dex_pc, bool* has_no_move_exception) {
|
|
const DexFile::CodeItem* code_item = GetCodeItem();
|
|
// Set aside the exception while we resolve its type.
|
|
Thread* self = Thread::Current();
|
|
StackHandleScope<1> hs(self);
|
|
Handle<mirror::Throwable> exception(hs.NewHandle(self->GetException()));
|
|
self->ClearException();
|
|
// Default to handler not found.
|
|
uint32_t found_dex_pc = DexFile::kDexNoIndex;
|
|
// Iterate over the catch handlers associated with dex_pc.
|
|
for (CatchHandlerIterator it(*code_item, dex_pc); it.HasNext(); it.Next()) {
|
|
dex::TypeIndex iter_type_idx = it.GetHandlerTypeIndex();
|
|
// Catch all case
|
|
if (!iter_type_idx.IsValid()) {
|
|
found_dex_pc = it.GetHandlerAddress();
|
|
break;
|
|
}
|
|
// Does this catch exception type apply?
|
|
mirror::Class* iter_exception_type = GetClassFromTypeIndex(iter_type_idx, true /* resolve */);
|
|
if (UNLIKELY(iter_exception_type == nullptr)) {
|
|
// Now have a NoClassDefFoundError as exception. Ignore in case the exception class was
|
|
// removed by a pro-guard like tool.
|
|
// Note: this is not RI behavior. RI would have failed when loading the class.
|
|
self->ClearException();
|
|
// Delete any long jump context as this routine is called during a stack walk which will
|
|
// release its in use context at the end.
|
|
delete self->GetLongJumpContext();
|
|
LOG(WARNING) << "Unresolved exception class when finding catch block: "
|
|
<< DescriptorToDot(GetTypeDescriptorFromTypeIdx(iter_type_idx));
|
|
} else if (iter_exception_type->IsAssignableFrom(exception_type.Get())) {
|
|
found_dex_pc = it.GetHandlerAddress();
|
|
break;
|
|
}
|
|
}
|
|
if (found_dex_pc != DexFile::kDexNoIndex) {
|
|
const Instruction* first_catch_instr =
|
|
Instruction::At(&code_item->insns_[found_dex_pc]);
|
|
*has_no_move_exception = (first_catch_instr->Opcode() != Instruction::MOVE_EXCEPTION);
|
|
}
|
|
// Put the exception back.
|
|
if (exception != nullptr) {
|
|
self->SetException(exception.Get());
|
|
}
|
|
return found_dex_pc;
|
|
}
|
|
|
|
void ArtMethod::Invoke(Thread* self, uint32_t* args, uint32_t args_size, JValue* result,
|
|
const char* shorty) {
|
|
if (UNLIKELY(__builtin_frame_address(0) < self->GetStackEnd())) {
|
|
ThrowStackOverflowError(self);
|
|
return;
|
|
}
|
|
|
|
if (kIsDebugBuild) {
|
|
self->AssertThreadSuspensionIsAllowable();
|
|
CHECK_EQ(kRunnable, self->GetState());
|
|
CHECK_STREQ(GetInterfaceMethodIfProxy(kRuntimePointerSize)->GetShorty(), shorty);
|
|
}
|
|
|
|
// Push a transition back into managed code onto the linked list in thread.
|
|
ManagedStack fragment;
|
|
self->PushManagedStackFragment(&fragment);
|
|
|
|
Runtime* runtime = Runtime::Current();
|
|
// Call the invoke stub, passing everything as arguments.
|
|
// If the runtime is not yet started or it is required by the debugger, then perform the
|
|
// Invocation by the interpreter, explicitly forcing interpretation over JIT to prevent
|
|
// cycling around the various JIT/Interpreter methods that handle method invocation.
|
|
if (UNLIKELY(!runtime->IsStarted() || Dbg::IsForcedInterpreterNeededForCalling(self, this))) {
|
|
if (IsStatic()) {
|
|
art::interpreter::EnterInterpreterFromInvoke(
|
|
self, this, nullptr, args, result, /*stay_in_interpreter*/ true);
|
|
} else {
|
|
mirror::Object* receiver =
|
|
reinterpret_cast<StackReference<mirror::Object>*>(&args[0])->AsMirrorPtr();
|
|
art::interpreter::EnterInterpreterFromInvoke(
|
|
self, this, receiver, args + 1, result, /*stay_in_interpreter*/ true);
|
|
}
|
|
} else {
|
|
DCHECK_EQ(runtime->GetClassLinker()->GetImagePointerSize(), kRuntimePointerSize);
|
|
|
|
constexpr bool kLogInvocationStartAndReturn = false;
|
|
bool have_quick_code = GetEntryPointFromQuickCompiledCode() != nullptr;
|
|
if (LIKELY(have_quick_code)) {
|
|
if (kLogInvocationStartAndReturn) {
|
|
LOG(INFO) << StringPrintf(
|
|
"Invoking '%s' quick code=%p static=%d", PrettyMethod().c_str(),
|
|
GetEntryPointFromQuickCompiledCode(), static_cast<int>(IsStatic() ? 1 : 0));
|
|
}
|
|
|
|
// Ensure that we won't be accidentally calling quick compiled code when -Xint.
|
|
if (kIsDebugBuild && runtime->GetInstrumentation()->IsForcedInterpretOnly()) {
|
|
CHECK(!runtime->UseJitCompilation());
|
|
const void* oat_quick_code =
|
|
(IsNative() || !IsInvokable() || IsProxyMethod() || IsObsolete())
|
|
? nullptr
|
|
: GetOatMethodQuickCode(runtime->GetClassLinker()->GetImagePointerSize());
|
|
CHECK(oat_quick_code == nullptr || oat_quick_code != GetEntryPointFromQuickCompiledCode())
|
|
<< "Don't call compiled code when -Xint " << PrettyMethod();
|
|
}
|
|
|
|
if (!IsStatic()) {
|
|
(*art_quick_invoke_stub)(this, args, args_size, self, result, shorty);
|
|
} else {
|
|
(*art_quick_invoke_static_stub)(this, args, args_size, self, result, shorty);
|
|
}
|
|
if (UNLIKELY(self->GetException() == Thread::GetDeoptimizationException())) {
|
|
// Unusual case where we were running generated code and an
|
|
// exception was thrown to force the activations to be removed from the
|
|
// stack. Continue execution in the interpreter.
|
|
self->DeoptimizeWithDeoptimizationException(result);
|
|
}
|
|
if (kLogInvocationStartAndReturn) {
|
|
LOG(INFO) << StringPrintf("Returned '%s' quick code=%p", PrettyMethod().c_str(),
|
|
GetEntryPointFromQuickCompiledCode());
|
|
}
|
|
} else {
|
|
LOG(INFO) << "Not invoking '" << PrettyMethod() << "' code=null";
|
|
if (result != nullptr) {
|
|
result->SetJ(0);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Pop transition.
|
|
self->PopManagedStackFragment(fragment);
|
|
}
|
|
|
|
const void* ArtMethod::RegisterNative(const void* native_method, bool is_fast) {
|
|
CHECK(IsNative()) << PrettyMethod();
|
|
CHECK(!IsFastNative()) << PrettyMethod();
|
|
CHECK(native_method != nullptr) << PrettyMethod();
|
|
if (is_fast) {
|
|
AddAccessFlags(kAccFastNative);
|
|
}
|
|
void* new_native_method = nullptr;
|
|
Runtime::Current()->GetRuntimeCallbacks()->RegisterNativeMethod(this,
|
|
native_method,
|
|
/*out*/&new_native_method);
|
|
SetEntryPointFromJni(new_native_method);
|
|
return new_native_method;
|
|
}
|
|
|
|
void ArtMethod::UnregisterNative() {
|
|
CHECK(IsNative() && !IsFastNative()) << PrettyMethod();
|
|
// restore stub to lookup native pointer via dlsym
|
|
SetEntryPointFromJni(GetJniDlsymLookupStub());
|
|
}
|
|
|
|
bool ArtMethod::IsOverridableByDefaultMethod() {
|
|
return GetDeclaringClass()->IsInterface();
|
|
}
|
|
|
|
bool ArtMethod::IsAnnotatedWithFastNative() {
|
|
return IsAnnotatedWith(WellKnownClasses::dalvik_annotation_optimization_FastNative,
|
|
DexFile::kDexVisibilityBuild,
|
|
/* lookup_in_resolved_boot_classes */ true);
|
|
}
|
|
|
|
bool ArtMethod::IsAnnotatedWithCriticalNative() {
|
|
return IsAnnotatedWith(WellKnownClasses::dalvik_annotation_optimization_CriticalNative,
|
|
DexFile::kDexVisibilityBuild,
|
|
/* lookup_in_resolved_boot_classes */ true);
|
|
}
|
|
|
|
bool ArtMethod::IsAnnotatedWith(jclass klass,
|
|
uint32_t visibility,
|
|
bool lookup_in_resolved_boot_classes) {
|
|
Thread* self = Thread::Current();
|
|
ScopedObjectAccess soa(self);
|
|
StackHandleScope<1> shs(self);
|
|
|
|
ObjPtr<mirror::Class> annotation = soa.Decode<mirror::Class>(klass);
|
|
DCHECK(annotation->IsAnnotation());
|
|
Handle<mirror::Class> annotation_handle(shs.NewHandle(annotation));
|
|
|
|
return annotations::IsMethodAnnotationPresent(
|
|
this, annotation_handle, visibility, lookup_in_resolved_boot_classes);
|
|
}
|
|
|
|
static uint32_t GetOatMethodIndexFromMethodIndex(const DexFile& dex_file,
|
|
uint16_t class_def_idx,
|
|
uint32_t method_idx) {
|
|
const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_idx);
|
|
const uint8_t* class_data = dex_file.GetClassData(class_def);
|
|
CHECK(class_data != nullptr);
|
|
ClassDataItemIterator it(dex_file, class_data);
|
|
it.SkipAllFields();
|
|
// Process methods
|
|
size_t class_def_method_index = 0;
|
|
while (it.HasNextDirectMethod()) {
|
|
if (it.GetMemberIndex() == method_idx) {
|
|
return class_def_method_index;
|
|
}
|
|
class_def_method_index++;
|
|
it.Next();
|
|
}
|
|
while (it.HasNextVirtualMethod()) {
|
|
if (it.GetMemberIndex() == method_idx) {
|
|
return class_def_method_index;
|
|
}
|
|
class_def_method_index++;
|
|
it.Next();
|
|
}
|
|
DCHECK(!it.HasNext());
|
|
LOG(FATAL) << "Failed to find method index " << method_idx << " in " << dex_file.GetLocation();
|
|
UNREACHABLE();
|
|
}
|
|
|
|
// We use the method's DexFile and declaring class name to find the OatMethod for an obsolete
|
|
// method. This is extremely slow but we need it if we want to be able to have obsolete native
|
|
// methods since we need this to find the size of its stack frames.
|
|
//
|
|
// NB We could (potentially) do this differently and rely on the way the transformation is applied
|
|
// in order to use the entrypoint to find this information. However, for debugging reasons (most
|
|
// notably making sure that new invokes of obsolete methods fail) we choose to instead get the data
|
|
// directly from the dex file.
|
|
static const OatFile::OatMethod FindOatMethodFromDexFileFor(ArtMethod* method, bool* found)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
DCHECK(method->IsObsolete() && method->IsNative());
|
|
const DexFile* dex_file = method->GetDexFile();
|
|
|
|
// recreate the class_def_index from the descriptor.
|
|
std::string descriptor_storage;
|
|
const DexFile::TypeId* declaring_class_type_id =
|
|
dex_file->FindTypeId(method->GetDeclaringClass()->GetDescriptor(&descriptor_storage));
|
|
CHECK(declaring_class_type_id != nullptr);
|
|
dex::TypeIndex declaring_class_type_index = dex_file->GetIndexForTypeId(*declaring_class_type_id);
|
|
const DexFile::ClassDef* declaring_class_type_def =
|
|
dex_file->FindClassDef(declaring_class_type_index);
|
|
CHECK(declaring_class_type_def != nullptr);
|
|
uint16_t declaring_class_def_index = dex_file->GetIndexForClassDef(*declaring_class_type_def);
|
|
|
|
size_t oat_method_index = GetOatMethodIndexFromMethodIndex(*dex_file,
|
|
declaring_class_def_index,
|
|
method->GetDexMethodIndex());
|
|
|
|
OatFile::OatClass oat_class = OatFile::FindOatClass(*dex_file,
|
|
declaring_class_def_index,
|
|
found);
|
|
if (!(*found)) {
|
|
return OatFile::OatMethod::Invalid();
|
|
}
|
|
return oat_class.GetOatMethod(oat_method_index);
|
|
}
|
|
|
|
static const OatFile::OatMethod FindOatMethodFor(ArtMethod* method,
|
|
PointerSize pointer_size,
|
|
bool* found)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
if (UNLIKELY(method->IsObsolete())) {
|
|
// We shouldn't be calling this with obsolete methods except for native obsolete methods for
|
|
// which we need to use the oat method to figure out how large the quick frame is.
|
|
DCHECK(method->IsNative()) << "We should only be finding the OatMethod of obsolete methods in "
|
|
<< "order to allow stack walking. Other obsolete methods should "
|
|
<< "never need to access this information.";
|
|
DCHECK_EQ(pointer_size, kRuntimePointerSize) << "Obsolete method in compiler!";
|
|
return FindOatMethodFromDexFileFor(method, found);
|
|
}
|
|
// Although we overwrite the trampoline of non-static methods, we may get here via the resolution
|
|
// method for direct methods (or virtual methods made direct).
|
|
mirror::Class* declaring_class = method->GetDeclaringClass();
|
|
size_t oat_method_index;
|
|
if (method->IsStatic() || method->IsDirect()) {
|
|
// Simple case where the oat method index was stashed at load time.
|
|
oat_method_index = method->GetMethodIndex();
|
|
} else {
|
|
// Compute the oat_method_index by search for its position in the declared virtual methods.
|
|
oat_method_index = declaring_class->NumDirectMethods();
|
|
bool found_virtual = false;
|
|
for (ArtMethod& art_method : declaring_class->GetVirtualMethods(pointer_size)) {
|
|
// Check method index instead of identity in case of duplicate method definitions.
|
|
if (method->GetDexMethodIndex() == art_method.GetDexMethodIndex()) {
|
|
found_virtual = true;
|
|
break;
|
|
}
|
|
oat_method_index++;
|
|
}
|
|
CHECK(found_virtual) << "Didn't find oat method index for virtual method: "
|
|
<< method->PrettyMethod();
|
|
}
|
|
DCHECK_EQ(oat_method_index,
|
|
GetOatMethodIndexFromMethodIndex(*declaring_class->GetDexCache()->GetDexFile(),
|
|
method->GetDeclaringClass()->GetDexClassDefIndex(),
|
|
method->GetDexMethodIndex()));
|
|
OatFile::OatClass oat_class = OatFile::FindOatClass(*declaring_class->GetDexCache()->GetDexFile(),
|
|
declaring_class->GetDexClassDefIndex(),
|
|
found);
|
|
if (!(*found)) {
|
|
return OatFile::OatMethod::Invalid();
|
|
}
|
|
return oat_class.GetOatMethod(oat_method_index);
|
|
}
|
|
|
|
bool ArtMethod::EqualParameters(Handle<mirror::ObjectArray<mirror::Class>> params) {
|
|
auto* dex_cache = GetDexCache();
|
|
auto* dex_file = dex_cache->GetDexFile();
|
|
const auto& method_id = dex_file->GetMethodId(GetDexMethodIndex());
|
|
const auto& proto_id = dex_file->GetMethodPrototype(method_id);
|
|
const DexFile::TypeList* proto_params = dex_file->GetProtoParameters(proto_id);
|
|
auto count = proto_params != nullptr ? proto_params->Size() : 0u;
|
|
auto param_len = params != nullptr ? params->GetLength() : 0u;
|
|
if (param_len != count) {
|
|
return false;
|
|
}
|
|
auto* cl = Runtime::Current()->GetClassLinker();
|
|
for (size_t i = 0; i < count; ++i) {
|
|
auto type_idx = proto_params->GetTypeItem(i).type_idx_;
|
|
auto* type = cl->ResolveType(type_idx, this);
|
|
if (type == nullptr) {
|
|
Thread::Current()->AssertPendingException();
|
|
return false;
|
|
}
|
|
if (type != params->GetWithoutChecks(i)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
const uint8_t* ArtMethod::GetQuickenedInfo(PointerSize pointer_size) {
|
|
if (kIsVdexEnabled) {
|
|
const DexFile& dex_file = GetDeclaringClass()->GetDexFile();
|
|
const OatFile::OatDexFile* oat_dex_file = dex_file.GetOatDexFile();
|
|
if (oat_dex_file == nullptr || (oat_dex_file->GetOatFile() == nullptr)) {
|
|
return nullptr;
|
|
}
|
|
return oat_dex_file->GetOatFile()->GetVdexFile()->GetQuickenedInfoOf(
|
|
dex_file, GetCodeItemOffset());
|
|
} else {
|
|
bool found = false;
|
|
OatFile::OatMethod oat_method = FindOatMethodFor(this, pointer_size, &found);
|
|
if (!found || (oat_method.GetQuickCode() != nullptr)) {
|
|
return nullptr;
|
|
}
|
|
return oat_method.GetVmapTable();
|
|
}
|
|
}
|
|
|
|
const OatQuickMethodHeader* ArtMethod::GetOatQuickMethodHeader(uintptr_t pc) {
|
|
// Our callers should make sure they don't pass the instrumentation exit pc,
|
|
// as this method does not look at the side instrumentation stack.
|
|
DCHECK_NE(pc, reinterpret_cast<uintptr_t>(GetQuickInstrumentationExitPc()));
|
|
|
|
if (IsRuntimeMethod()) {
|
|
return nullptr;
|
|
}
|
|
|
|
Runtime* runtime = Runtime::Current();
|
|
const void* existing_entry_point = GetEntryPointFromQuickCompiledCode();
|
|
CHECK(existing_entry_point != nullptr) << PrettyMethod() << "@" << this;
|
|
ClassLinker* class_linker = runtime->GetClassLinker();
|
|
|
|
if (class_linker->IsQuickGenericJniStub(existing_entry_point)) {
|
|
// The generic JNI does not have any method header.
|
|
return nullptr;
|
|
}
|
|
|
|
if (existing_entry_point == GetQuickProxyInvokeHandler()) {
|
|
DCHECK(IsProxyMethod() && !IsConstructor());
|
|
// The proxy entry point does not have any method header.
|
|
return nullptr;
|
|
}
|
|
|
|
// Check whether the current entry point contains this pc.
|
|
if (!class_linker->IsQuickResolutionStub(existing_entry_point) &&
|
|
!class_linker->IsQuickToInterpreterBridge(existing_entry_point)) {
|
|
OatQuickMethodHeader* method_header =
|
|
OatQuickMethodHeader::FromEntryPoint(existing_entry_point);
|
|
|
|
if (method_header->Contains(pc)) {
|
|
return method_header;
|
|
}
|
|
}
|
|
|
|
// Check whether the pc is in the JIT code cache.
|
|
jit::Jit* jit = runtime->GetJit();
|
|
if (jit != nullptr) {
|
|
jit::JitCodeCache* code_cache = jit->GetCodeCache();
|
|
OatQuickMethodHeader* method_header = code_cache->LookupMethodHeader(pc, this);
|
|
if (method_header != nullptr) {
|
|
DCHECK(method_header->Contains(pc));
|
|
return method_header;
|
|
} else {
|
|
DCHECK(!code_cache->ContainsPc(reinterpret_cast<const void*>(pc)))
|
|
<< PrettyMethod()
|
|
<< ", pc=" << std::hex << pc
|
|
<< ", entry_point=" << std::hex << reinterpret_cast<uintptr_t>(existing_entry_point)
|
|
<< ", copy=" << std::boolalpha << IsCopied()
|
|
<< ", proxy=" << std::boolalpha << IsProxyMethod();
|
|
}
|
|
}
|
|
|
|
// The code has to be in an oat file.
|
|
bool found;
|
|
OatFile::OatMethod oat_method =
|
|
FindOatMethodFor(this, class_linker->GetImagePointerSize(), &found);
|
|
if (!found) {
|
|
if (class_linker->IsQuickResolutionStub(existing_entry_point)) {
|
|
// We are running the generic jni stub, but the entry point of the method has not
|
|
// been updated yet.
|
|
DCHECK_EQ(pc, 0u) << "Should be a downcall";
|
|
DCHECK(IsNative());
|
|
return nullptr;
|
|
}
|
|
if (existing_entry_point == GetQuickInstrumentationEntryPoint()) {
|
|
// We are running the generic jni stub, but the method is being instrumented.
|
|
// NB We would normally expect the pc to be zero but we can have non-zero pc's if
|
|
// instrumentation is installed or removed during the call which is using the generic jni
|
|
// trampoline.
|
|
DCHECK(IsNative());
|
|
return nullptr;
|
|
}
|
|
// Only for unit tests.
|
|
// TODO(ngeoffray): Update these tests to pass the right pc?
|
|
return OatQuickMethodHeader::FromEntryPoint(existing_entry_point);
|
|
}
|
|
const void* oat_entry_point = oat_method.GetQuickCode();
|
|
if (oat_entry_point == nullptr || class_linker->IsQuickGenericJniStub(oat_entry_point)) {
|
|
DCHECK(IsNative()) << PrettyMethod();
|
|
return nullptr;
|
|
}
|
|
|
|
OatQuickMethodHeader* method_header = OatQuickMethodHeader::FromEntryPoint(oat_entry_point);
|
|
if (pc == 0) {
|
|
// This is a downcall, it can only happen for a native method.
|
|
DCHECK(IsNative());
|
|
return method_header;
|
|
}
|
|
|
|
DCHECK(method_header->Contains(pc))
|
|
<< PrettyMethod()
|
|
<< " " << std::hex << pc << " " << oat_entry_point
|
|
<< " " << (uintptr_t)(method_header->GetCode() + method_header->GetCodeSize());
|
|
return method_header;
|
|
}
|
|
|
|
const void* ArtMethod::GetOatMethodQuickCode(PointerSize pointer_size) {
|
|
bool found;
|
|
OatFile::OatMethod oat_method = FindOatMethodFor(this, pointer_size, &found);
|
|
if (found) {
|
|
return oat_method.GetQuickCode();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
bool ArtMethod::HasAnyCompiledCode() {
|
|
if (IsNative() || !IsInvokable() || IsProxyMethod()) {
|
|
return false;
|
|
}
|
|
|
|
// Check whether the JIT has compiled it.
|
|
Runtime* runtime = Runtime::Current();
|
|
jit::Jit* jit = runtime->GetJit();
|
|
if (jit != nullptr && jit->GetCodeCache()->ContainsMethod(this)) {
|
|
return true;
|
|
}
|
|
|
|
// Check whether we have AOT code.
|
|
return GetOatMethodQuickCode(runtime->GetClassLinker()->GetImagePointerSize()) != nullptr;
|
|
}
|
|
|
|
void ArtMethod::CopyFrom(ArtMethod* src, PointerSize image_pointer_size) {
|
|
memcpy(reinterpret_cast<void*>(this), reinterpret_cast<const void*>(src),
|
|
Size(image_pointer_size));
|
|
declaring_class_ = GcRoot<mirror::Class>(const_cast<ArtMethod*>(src)->GetDeclaringClass());
|
|
|
|
// If the entry point of the method we are copying from is from JIT code, we just
|
|
// put the entry point of the new method to interpreter. We could set the entry point
|
|
// to the JIT code, but this would require taking the JIT code cache lock to notify
|
|
// it, which we do not want at this level.
|
|
Runtime* runtime = Runtime::Current();
|
|
if (runtime->UseJitCompilation()) {
|
|
if (runtime->GetJit()->GetCodeCache()->ContainsPc(GetEntryPointFromQuickCompiledCode())) {
|
|
SetEntryPointFromQuickCompiledCodePtrSize(GetQuickToInterpreterBridge(), image_pointer_size);
|
|
}
|
|
}
|
|
// Clear the profiling info for the same reasons as the JIT code.
|
|
if (!src->IsNative()) {
|
|
SetProfilingInfoPtrSize(nullptr, image_pointer_size);
|
|
}
|
|
// Clear hotness to let the JIT properly decide when to compile this method.
|
|
hotness_count_ = 0;
|
|
}
|
|
|
|
bool ArtMethod::IsImagePointerSize(PointerSize pointer_size) {
|
|
// Hijack this function to get access to PtrSizedFieldsOffset.
|
|
//
|
|
// Ensure that PrtSizedFieldsOffset is correct. We rely here on usually having both 32-bit and
|
|
// 64-bit builds.
|
|
static_assert(std::is_standard_layout<ArtMethod>::value, "ArtMethod is not standard layout.");
|
|
static_assert(
|
|
(sizeof(void*) != 4) ||
|
|
(offsetof(ArtMethod, ptr_sized_fields_) == PtrSizedFieldsOffset(PointerSize::k32)),
|
|
"Unexpected 32-bit class layout.");
|
|
static_assert(
|
|
(sizeof(void*) != 8) ||
|
|
(offsetof(ArtMethod, ptr_sized_fields_) == PtrSizedFieldsOffset(PointerSize::k64)),
|
|
"Unexpected 64-bit class layout.");
|
|
|
|
Runtime* runtime = Runtime::Current();
|
|
if (runtime == nullptr) {
|
|
return true;
|
|
}
|
|
return runtime->GetClassLinker()->GetImagePointerSize() == pointer_size;
|
|
}
|
|
|
|
std::string ArtMethod::PrettyMethod(ArtMethod* m, bool with_signature) {
|
|
if (m == nullptr) {
|
|
return "null";
|
|
}
|
|
return m->PrettyMethod(with_signature);
|
|
}
|
|
|
|
std::string ArtMethod::PrettyMethod(bool with_signature) {
|
|
ArtMethod* m = this;
|
|
if (!m->IsRuntimeMethod()) {
|
|
m = m->GetInterfaceMethodIfProxy(Runtime::Current()->GetClassLinker()->GetImagePointerSize());
|
|
}
|
|
std::string result(PrettyDescriptor(m->GetDeclaringClassDescriptor()));
|
|
result += '.';
|
|
result += m->GetName();
|
|
if (UNLIKELY(m->IsFastNative())) {
|
|
result += "!";
|
|
}
|
|
if (with_signature) {
|
|
const Signature signature = m->GetSignature();
|
|
std::string sig_as_string(signature.ToString());
|
|
if (signature == Signature::NoSignature()) {
|
|
return result + sig_as_string;
|
|
}
|
|
result = PrettyReturnType(sig_as_string.c_str()) + " " + result +
|
|
PrettyArguments(sig_as_string.c_str());
|
|
}
|
|
return result;
|
|
}
|
|
|
|
std::string ArtMethod::JniShortName() {
|
|
return GetJniShortName(GetDeclaringClassDescriptor(), GetName());
|
|
}
|
|
|
|
std::string ArtMethod::JniLongName() {
|
|
std::string long_name;
|
|
long_name += JniShortName();
|
|
long_name += "__";
|
|
|
|
std::string signature(GetSignature().ToString());
|
|
signature.erase(0, 1);
|
|
signature.erase(signature.begin() + signature.find(')'), signature.end());
|
|
|
|
long_name += MangleForJni(signature);
|
|
|
|
return long_name;
|
|
}
|
|
|
|
// AssertSharedHeld doesn't work in GetAccessFlags, so use a NO_THREAD_SAFETY_ANALYSIS helper.
|
|
// TODO: Figure out why ASSERT_SHARED_CAPABILITY doesn't work.
|
|
template <ReadBarrierOption kReadBarrierOption>
|
|
ALWAYS_INLINE static inline void DoGetAccessFlagsHelper(ArtMethod* method)
|
|
NO_THREAD_SAFETY_ANALYSIS {
|
|
CHECK(method->IsRuntimeMethod() ||
|
|
method->GetDeclaringClass<kReadBarrierOption>()->IsIdxLoaded() ||
|
|
method->GetDeclaringClass<kReadBarrierOption>()->IsErroneous());
|
|
}
|
|
|
|
template <ReadBarrierOption kReadBarrierOption> void ArtMethod::GetAccessFlagsDCheck() {
|
|
if (kCheckDeclaringClassState) {
|
|
Thread* self = Thread::Current();
|
|
if (!Locks::mutator_lock_->IsSharedHeld(self)) {
|
|
if (self->IsThreadSuspensionAllowable()) {
|
|
ScopedObjectAccess soa(self);
|
|
CHECK(IsRuntimeMethod() ||
|
|
GetDeclaringClass<kReadBarrierOption>()->IsIdxLoaded() ||
|
|
GetDeclaringClass<kReadBarrierOption>()->IsErroneous());
|
|
}
|
|
} else {
|
|
// We cannot use SOA in this case. We might be holding the lock, but may not be in the
|
|
// runnable state (e.g., during GC).
|
|
Locks::mutator_lock_->AssertSharedHeld(self);
|
|
DoGetAccessFlagsHelper<kReadBarrierOption>(this);
|
|
}
|
|
}
|
|
}
|
|
template void ArtMethod::GetAccessFlagsDCheck<ReadBarrierOption::kWithReadBarrier>();
|
|
template void ArtMethod::GetAccessFlagsDCheck<ReadBarrierOption::kWithoutReadBarrier>();
|
|
|
|
} // namespace art
|