Remove obsolete code on lazy dequickening.
Test: m
Bug: 196414062
Change-Id: I2d5d0c5497a2ee438cad88c2090ae91626a64206
diff --git a/openjdkjvmti/Android.bp b/openjdkjvmti/Android.bp
index 4f49ae5..d01357f 100644
--- a/openjdkjvmti/Android.bp
+++ b/openjdkjvmti/Android.bp
@@ -68,7 +68,6 @@
"alloc_manager.cc",
"deopt_manager.cc",
"events.cc",
- "fixed_up_dex_file.cc",
"object_tagging.cc",
"OpenjdkJvmTi.cc",
"ti_allocator.cc",
diff --git a/openjdkjvmti/fixed_up_dex_file.cc b/openjdkjvmti/fixed_up_dex_file.cc
deleted file mode 100644
index 9d1fabf..0000000
--- a/openjdkjvmti/fixed_up_dex_file.cc
+++ /dev/null
@@ -1,136 +0,0 @@
-/* Copyright (C) 2017 The Android Open Source Project
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This file implements interfaces from the file jvmti.h. This implementation
- * is licensed under the same terms as the file jvmti.h. The
- * copyright and license information for the file jvmti.h follows.
- *
- * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-#include "base/leb128.h"
-#include "fixed_up_dex_file.h"
-#include "dex/class_accessor-inl.h"
-#include "dex/dex_file-inl.h"
-#include "dex/dex_file_loader.h"
-#include "dex/dex_file_verifier.h"
-
-// Runtime includes.
-#include "dex_container.h"
-#include "dex/compact_dex_level.h"
-#include "dexlayout.h"
-#include "oat_file.h"
-#include "vdex_file.h"
-
-namespace openjdkjvmti {
-
-static void RecomputeDexChecksum(art::DexFile* dex_file) {
- reinterpret_cast<art::DexFile::Header*>(const_cast<uint8_t*>(dex_file->Begin()))->checksum_ =
- dex_file->CalculateChecksum();
-}
-
-static void DCheckVerifyDexFile(const art::DexFile& dex) {
- if (art::kIsDebugBuild) {
- std::string error;
- if (!art::dex::Verify(&dex,
- dex.Begin(),
- dex.Size(),
- "FixedUpDexFile_Verification.dex",
- /*verify_checksum=*/ true,
- &error)) {
- LOG(FATAL) << "Failed to verify de-quickened dex file: " << error;
- }
- }
-}
-
-std::unique_ptr<FixedUpDexFile> FixedUpDexFile::Create(const art::DexFile& original,
- const char* descriptor) {
- // Copy the data into mutable memory.
- std::vector<unsigned char> data;
- std::unique_ptr<const art::DexFile> new_dex_file;
- std::string error;
-
- // Do not use ArtDexFileLoader here. This code runs in a signal handler and
- // its stack is too small to invoke the required LocationIsOnSystemFramework
- // (b/76429651). Instead, we use DexFileLoader and copy the IsPlatformDexFile
- // property from `original` to `new_dex_file`.
- const art::DexFileLoader dex_file_loader;
-
- if (original.IsCompactDexFile() || original.HasHiddenapiClassData()) {
- // Since we are supposed to return a standard dex, convert back using dexlayout. It's OK to do
- // this before unquickening.
- // We also do dex layout for dex files that have hidden API data, as we want to remove that
- // data.
- art::Options options;
- options.compact_dex_level_ = art::CompactDexLevel::kCompactDexLevelNone;
- // Add a filter to only include the class that has the matching descriptor.
- static constexpr bool kFilterByDescriptor = true;
- if (kFilterByDescriptor) {
- options.class_filter_.insert(descriptor);
- }
- art::DexLayout dex_layout(options,
- /*info=*/ nullptr,
- /*out_file=*/ nullptr,
- /*header=*/ nullptr);
- std::unique_ptr<art::DexContainer> dex_container;
- bool result = dex_layout.ProcessDexFile(
- original.GetLocation().c_str(),
- &original,
- 0,
- &dex_container,
- &error);
- CHECK(result) << "Failed to generate dex file " << error;
- art::DexContainer::Section* main_section = dex_container->GetMainSection();
- CHECK_EQ(dex_container->GetDataSection()->Size(), 0u);
- data.insert(data.end(), main_section->Begin(), main_section->End());
- } else {
- data.resize(original.Size());
- memcpy(data.data(), original.Begin(), original.Size());
- }
-
- // Open the dex file in the buffer.
- new_dex_file = dex_file_loader.Open(
- data.data(),
- data.size(),
- /*location=*/"Unquickening_dexfile.dex",
- /*location_checksum=*/0,
- /*oat_dex_file=*/nullptr,
- /*verify=*/false,
- /*verify_checksum=*/false,
- &error);
-
- if (new_dex_file == nullptr) {
- LOG(ERROR) << "Unable to open dex file from memory for unquickening! error: " << error;
- return nullptr;
- }
-
- new_dex_file->SetHiddenapiDomain(original.GetHiddenapiDomain());
-
- RecomputeDexChecksum(const_cast<art::DexFile*>(new_dex_file.get()));
- DCheckVerifyDexFile(*new_dex_file);
- std::unique_ptr<FixedUpDexFile> ret(new FixedUpDexFile(std::move(new_dex_file), std::move(data)));
- return ret;
-}
-
-} // namespace openjdkjvmti
diff --git a/openjdkjvmti/fixed_up_dex_file.h b/openjdkjvmti/fixed_up_dex_file.h
deleted file mode 100644
index 594e8a7..0000000
--- a/openjdkjvmti/fixed_up_dex_file.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/* Copyright (C) 2017 The Android Open Source Project
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This file implements interfaces from the file jvmti.h. This implementation
- * is licensed under the same terms as the file jvmti.h. The
- * copyright and license information for the file jvmti.h follows.
- *
- * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-#ifndef ART_OPENJDKJVMTI_FIXED_UP_DEX_FILE_H_
-#define ART_OPENJDKJVMTI_FIXED_UP_DEX_FILE_H_
-
-#include <memory>
-#include <vector>
-
-#include "jni.h"
-#include "jvmti.h"
-
-#include "base/mutex.h"
-#include "dex/dex_file.h"
-
-namespace openjdkjvmti {
-
-// A holder for a DexFile that has been 'fixed up' to ensure it is fully compliant with the
-// published standard (no internal/quick opcodes, all fields are the defined values, etc). This is
-// used to ensure that agents get a consistent dex file regardless of what version of android they
-// are running on.
-class FixedUpDexFile {
- public:
- static std::unique_ptr<FixedUpDexFile> Create(const art::DexFile& original,
- const char* descriptor);
-
- const art::DexFile& GetDexFile() {
- return *dex_file_;
- }
-
- const unsigned char* Begin() {
- return data_.data();
- }
-
- size_t Size() {
- return data_.size();
- }
-
- private:
- explicit FixedUpDexFile(std::unique_ptr<const art::DexFile> fixed_up_dex_file,
- std::vector<unsigned char> data)
- : dex_file_(std::move(fixed_up_dex_file)),
- data_(std::move(data)) {}
-
- // the fixed up DexFile
- std::unique_ptr<const art::DexFile> dex_file_;
- // The backing data for dex_file_.
- const std::vector<unsigned char> data_;
-
- DISALLOW_COPY_AND_ASSIGN(FixedUpDexFile);
-};
-
-} // namespace openjdkjvmti
-
-#endif // ART_OPENJDKJVMTI_FIXED_UP_DEX_FILE_H_
diff --git a/openjdkjvmti/ti_class.cc b/openjdkjvmti/ti_class.cc
index 3345883..9752fb1 100644
--- a/openjdkjvmti/ti_class.cc
+++ b/openjdkjvmti/ti_class.cc
@@ -51,7 +51,6 @@
#include "dex/dex_file_loader.h"
#include "dex/primitive.h"
#include "events-inl.h"
-#include "fixed_up_dex_file.h"
#include "gc/heap-visit-objects-inl.h"
#include "gc/heap.h"
#include "gc_root.h"
diff --git a/openjdkjvmti/ti_class_definition.cc b/openjdkjvmti/ti_class_definition.cc
index 2c9cc1c..f1f5593 100644
--- a/openjdkjvmti/ti_class_definition.cc
+++ b/openjdkjvmti/ti_class_definition.cc
@@ -37,7 +37,6 @@
#include "class_root-inl.h"
#include "dex/dex_file.h"
#include "dex/art_dex_file_loader.h"
-#include "fixed_up_dex_file.h"
#include "handle.h"
#include "handle_scope-inl.h"
#include "mirror/class-inl.h"
@@ -48,32 +47,6 @@
namespace openjdkjvmti {
-void ArtClassDefinition::InitializeMemory() const {
- DCHECK(art::MemMap::kCanReplaceMapping);
- VLOG(signals) << "Initializing de-quickened memory for dex file of " << name_;
- CHECK(dex_data_mmap_.IsValid());
- CHECK(temp_mmap_.IsValid());
- CHECK_EQ(dex_data_mmap_.GetProtect(), PROT_NONE);
- CHECK_EQ(temp_mmap_.GetProtect(), PROT_READ | PROT_WRITE);
-
- std::string desc = std::string("L") + name_ + ";";
- std::unique_ptr<FixedUpDexFile>
- fixed_dex_file(FixedUpDexFile::Create(*initial_dex_file_unquickened_, desc.c_str()));
- CHECK(fixed_dex_file.get() != nullptr);
- CHECK_LE(fixed_dex_file->Size(), temp_mmap_.Size());
- CHECK_EQ(temp_mmap_.Size(), dex_data_mmap_.Size());
- // Copy the data to the temp mmap.
- memcpy(temp_mmap_.Begin(), fixed_dex_file->Begin(), fixed_dex_file->Size());
-
- // Move the mmap atomically.
- art::MemMap source;
- source.swap(temp_mmap_);
- std::string error;
- CHECK(dex_data_mmap_.ReplaceWith(&source, &error)) << "Failed to replace mmap for "
- << name_ << " because " << error;
- CHECK(dex_data_mmap_.Protect(PROT_READ));
-}
-
bool ArtClassDefinition::IsModified() const {
// RedefineClasses calls always are 'modified' since they need to change the current_dex_file of
// the class.
@@ -87,27 +60,6 @@
return false;
}
- // The dex_data_ was never touched by the agents.
- if (dex_data_mmap_.IsValid() && dex_data_mmap_.GetProtect() == PROT_NONE) {
- if (current_dex_file_.data() == dex_data_mmap_.Begin()) {
- // the dex_data_ looks like it changed (not equal to current_dex_file_) but we never
- // initialized the dex_data_mmap_. This means the new_dex_data was filled in without looking
- // at the initial dex_data_.
- return true;
- } else if (dex_data_.data() == dex_data_mmap_.Begin()) {
- // The dex file used to have modifications but they were not added again.
- return true;
- } else {
- // It's not clear what happened. It's possible that the agent got the current dex file data
- // from some other source so we need to initialize everything to see if it is the same.
- VLOG(signals) << "Lazy dex file for " << name_ << " was never touched but the dex_data_ is "
- << "changed! Need to initialize the memory to see if anything changed";
- InitializeMemory();
- }
- }
-
- // We can definitely read current_dex_file_ and dex_file_ without causing page faults.
-
// Check if the dex file we want to set is the same as the current one.
// Unfortunately we need to do this check even if no modifications have been done since it could
// be that agents were removed in the mean-time so we still have a different dex file. The dex
diff --git a/openjdkjvmti/ti_class_definition.h b/openjdkjvmti/ti_class_definition.h
index 3caeed9..3c1660e 100644
--- a/openjdkjvmti/ti_class_definition.h
+++ b/openjdkjvmti/ti_class_definition.h
@@ -49,18 +49,12 @@
// redefinition/retransformation function that created it.
class ArtClassDefinition {
public:
- // If we support doing a on-demand dex-dequickening using signal handlers.
- static constexpr bool kEnableOnDemandDexDequicken = true;
-
ArtClassDefinition()
: klass_(nullptr),
loader_(nullptr),
name_(),
protection_domain_(nullptr),
- dex_data_mmap_(),
- temp_mmap_(),
dex_data_memory_(),
- initial_dex_file_unquickened_(nullptr),
dex_data_(),
current_dex_memory_(),
current_dex_file_(),
@@ -107,12 +101,6 @@
}
}
- bool ContainsAddress(uintptr_t ptr) const {
- return dex_data_mmap_.IsValid() &&
- reinterpret_cast<uintptr_t>(dex_data_mmap_.Begin()) <= ptr &&
- reinterpret_cast<uintptr_t>(dex_data_mmap_.End()) > ptr;
- }
-
bool IsModified() const REQUIRES_SHARED(art::Locks::mutator_lock_);
bool IsInitialized() const {
@@ -134,13 +122,6 @@
return name_;
}
- bool IsLazyDefinition() const {
- DCHECK(IsInitialized());
- return dex_data_mmap_.IsValid() &&
- dex_data_.data() == dex_data_mmap_.Begin() &&
- dex_data_mmap_.GetProtect() == PROT_NONE;
- }
-
jobject GetProtectionDomain() const {
DCHECK(IsInitialized());
return protection_domain_;
@@ -151,8 +132,6 @@
return dex_data_;
}
- void InitializeMemory() const;
-
private:
jvmtiError InitCommon(art::Thread* self, jclass klass);
jvmtiError Init(const art::DexFile& dex_file);
@@ -162,17 +141,9 @@
std::string name_;
jobject protection_domain_;
- // Mmap that will be filled with the original-dex-file lazily if it needs to be de-quickened or
- // de-compact-dex'd
- mutable art::MemMap dex_data_mmap_;
- // This is a temporary mmap we will use to be able to fill the dex file data atomically.
- mutable art::MemMap temp_mmap_;
-
// A unique_ptr to the current dex_data if it needs to be cleaned up.
std::vector<unsigned char> dex_data_memory_;
- const art::DexFile* initial_dex_file_unquickened_;
-
// A ref to the current dex data. This is either dex_data_memory_, or current_dex_file_. This is
// what the dex file will be turned into.
art::ArrayRef<const unsigned char> dex_data_;
diff --git a/openjdkjvmti/transform.cc b/openjdkjvmti/transform.cc
index 9c440ef..1f36da4 100644
--- a/openjdkjvmti/transform.cc
+++ b/openjdkjvmti/transform.cc
@@ -70,185 +70,12 @@
namespace openjdkjvmti {
-// A FaultHandler that will deal with initializing ClassDefinitions when they are actually needed.
-class TransformationFaultHandler final : public art::FaultHandler {
- public:
- explicit TransformationFaultHandler(art::FaultManager* manager)
- : art::FaultHandler(manager),
- uninitialized_class_definitions_lock_("JVMTI Initialized class definitions lock",
- art::LockLevel::kSignalHandlingLock),
- class_definition_initialized_cond_("JVMTI Initialized class definitions condition",
- uninitialized_class_definitions_lock_) {
- manager->AddHandler(this, /* generated_code= */ false);
- }
-
- ~TransformationFaultHandler() {
- art::MutexLock mu(art::Thread::Current(), uninitialized_class_definitions_lock_);
- uninitialized_class_definitions_.clear();
- }
-
- bool Action(int sig, siginfo_t* siginfo, void* context ATTRIBUTE_UNUSED) override {
- DCHECK_EQ(sig, SIGSEGV);
- art::Thread* self = art::Thread::Current();
- uintptr_t ptr = reinterpret_cast<uintptr_t>(siginfo->si_addr);
- if (UNLIKELY(uninitialized_class_definitions_lock_.IsExclusiveHeld(self))) {
- // It's possible this is just some other unrelated segv that should be
- // handled separately, continue to later handlers. This is likely due to
- // running out of memory somewhere along the FixedUpDexFile pipeline and
- // is likely unrecoverable. By returning false here though we will get a
- // better, more accurate, stack-trace later that points to the actual
- // issue.
- LOG(WARNING) << "Recursive SEGV occurred during Transformation dequickening at 0x" << std::hex
- << ptr;
- return false;
- }
- ArtClassDefinition* res = nullptr;
-
- {
- // NB Technically using a mutex and condition variables here is non-posix compliant but
- // everything should be fine since both glibc and bionic implementations of mutexs and
- // condition variables work fine so long as the thread was not interrupted during a
- // lock/unlock (which it wasn't) on all architectures we care about.
- art::MutexLock mu(self, uninitialized_class_definitions_lock_);
- auto it = std::find_if(uninitialized_class_definitions_.begin(),
- uninitialized_class_definitions_.end(),
- [&](const auto op) { return op->ContainsAddress(ptr); });
- if (it != uninitialized_class_definitions_.end()) {
- res = *it;
- // Remove the class definition.
- uninitialized_class_definitions_.erase(it);
- // Put it in the initializing list
- initializing_class_definitions_.push_back(res);
- } else {
- // Wait for the ptr to be initialized (if it is currently initializing).
- while (DefinitionIsInitializing(ptr)) {
- WaitForClassInitializationToFinish();
- }
- // Return true (continue with user code) if we find that the definition has been
- // initialized. Return false (continue on to next signal handler) if the definition is not
- // initialized or found.
- return std::find_if(initialized_class_definitions_.begin(),
- initialized_class_definitions_.end(),
- [&](const auto op) { return op->ContainsAddress(ptr); }) !=
- initialized_class_definitions_.end();
- }
- }
-
- if (LIKELY(self != nullptr)) {
- CHECK_EQ(self->GetState(), art::ThreadState::kNative)
- << "Transformation fault handler occurred outside of native mode";
- }
-
- VLOG(signals) << "Lazy initialization of dex file for transformation of " << res->GetName()
- << " during SEGV";
- res->InitializeMemory();
-
- {
- art::MutexLock mu(self, uninitialized_class_definitions_lock_);
- // Move to initialized state and notify waiters.
- initializing_class_definitions_.erase(std::find(initializing_class_definitions_.begin(),
- initializing_class_definitions_.end(),
- res));
- initialized_class_definitions_.push_back(res);
- class_definition_initialized_cond_.Broadcast(self);
- }
-
- return true;
- }
-
- void RemoveDefinition(ArtClassDefinition* def) REQUIRES(!uninitialized_class_definitions_lock_) {
- art::MutexLock mu(art::Thread::Current(), uninitialized_class_definitions_lock_);
- auto it = std::find(uninitialized_class_definitions_.begin(),
- uninitialized_class_definitions_.end(),
- def);
- if (it != uninitialized_class_definitions_.end()) {
- uninitialized_class_definitions_.erase(it);
- return;
- }
- while (std::find(initializing_class_definitions_.begin(),
- initializing_class_definitions_.end(),
- def) != initializing_class_definitions_.end()) {
- WaitForClassInitializationToFinish();
- }
- it = std::find(initialized_class_definitions_.begin(),
- initialized_class_definitions_.end(),
- def);
- CHECK(it != initialized_class_definitions_.end()) << "Could not find class definition for "
- << def->GetName();
- initialized_class_definitions_.erase(it);
- }
-
- void AddArtDefinition(ArtClassDefinition* def) REQUIRES(!uninitialized_class_definitions_lock_) {
- DCHECK(def->IsLazyDefinition());
- art::MutexLock mu(art::Thread::Current(), uninitialized_class_definitions_lock_);
- uninitialized_class_definitions_.push_back(def);
- }
-
- private:
- bool DefinitionIsInitializing(uintptr_t ptr) REQUIRES(uninitialized_class_definitions_lock_) {
- return std::find_if(initializing_class_definitions_.begin(),
- initializing_class_definitions_.end(),
- [&](const auto op) { return op->ContainsAddress(ptr); }) !=
- initializing_class_definitions_.end();
- }
-
- void WaitForClassInitializationToFinish() REQUIRES(uninitialized_class_definitions_lock_) {
- class_definition_initialized_cond_.Wait(art::Thread::Current());
- }
-
- art::Mutex uninitialized_class_definitions_lock_ ACQUIRED_BEFORE(art::Locks::abort_lock_);
- art::ConditionVariable class_definition_initialized_cond_
- GUARDED_BY(uninitialized_class_definitions_lock_);
-
- // A list of the class definitions that have a non-readable map.
- std::vector<ArtClassDefinition*> uninitialized_class_definitions_
- GUARDED_BY(uninitialized_class_definitions_lock_);
-
- // A list of class definitions that are currently undergoing unquickening. Threads should wait
- // until the definition is no longer in this before returning.
- std::vector<ArtClassDefinition*> initializing_class_definitions_
- GUARDED_BY(uninitialized_class_definitions_lock_);
-
- // A list of class definitions that are already unquickened. Threads should immediately return if
- // it is here.
- std::vector<ArtClassDefinition*> initialized_class_definitions_
- GUARDED_BY(uninitialized_class_definitions_lock_);
-};
-
-static TransformationFaultHandler* gTransformFaultHandler = nullptr;
static EventHandler* gEventHandler = nullptr;
-
void Transformer::Register(EventHandler* eh) {
- // Although we create this the fault handler is actually owned by the 'art::fault_manager' which
- // will take care of destroying it.
- if (art::MemMap::kCanReplaceMapping && ArtClassDefinition::kEnableOnDemandDexDequicken) {
- gTransformFaultHandler = new TransformationFaultHandler(&art::fault_manager);
- }
gEventHandler = eh;
}
-// Simple helper to add and remove the class definition from the fault handler.
-class ScopedDefinitionHandler {
- public:
- explicit ScopedDefinitionHandler(ArtClassDefinition* def)
- : def_(def), is_lazy_(def_->IsLazyDefinition()) {
- if (is_lazy_) {
- gTransformFaultHandler->AddArtDefinition(def_);
- }
- }
-
- ~ScopedDefinitionHandler() {
- if (is_lazy_) {
- gTransformFaultHandler->RemoveDefinition(def_);
- }
- }
-
- private:
- ArtClassDefinition* def_;
- bool is_lazy_;
-};
-
// Initialize templates.
template
void Transformer::TransformSingleClassDirect<ArtJvmtiEvent::kClassFileLoadHookNonRetransformable>(
@@ -269,10 +96,8 @@
kEvent == ArtJvmtiEvent::kStructuralDexFileLoadHook,
"bad event type");
// We don't want to do transitions between calling the event and setting the new data so change to
- // native state early. This also avoids any problems that the FaultHandler might have in
- // determining if an access to the dex_data is from generated code or not.
+ // native state early.
art::ScopedThreadStateChange stsc(self, art::ThreadState::kNative);
- ScopedDefinitionHandler handler(def);
jint new_len = -1;
unsigned char* new_data = nullptr;
art::ArrayRef<const unsigned char> dex_data = def->GetDexData();