131 lines
4.1 KiB
C++
131 lines
4.1 KiB
C++
/* Copyright (C) 2017 The Android Open Source Project
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This file implements interfaces from the file jvmti.h. This implementation
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* is licensed under the same terms as the file jvmti.h. The
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* copyright and license information for the file jvmti.h follows.
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*
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* Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#ifndef ART_RUNTIME_OPENJDKJVMTI_TI_CLASS_DEFINITION_H_
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#define ART_RUNTIME_OPENJDKJVMTI_TI_CLASS_DEFINITION_H_
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#include "art_jvmti.h"
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#include "base/array_ref.h"
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namespace openjdkjvmti {
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// A struct that stores data needed for redefining/transforming classes. This structure should only
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// even be accessed from a single thread and must not survive past the completion of the
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// redefinition/retransformation function that created it.
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class ArtClassDefinition {
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public:
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ArtClassDefinition()
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: klass_(nullptr),
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loader_(nullptr),
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name_(),
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protection_domain_(nullptr),
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dex_len_(0),
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dex_data_(nullptr),
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original_dex_file_memory_(nullptr),
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original_dex_file_(),
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redefined_(false) {}
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jvmtiError Init(ArtJvmTiEnv* env, jclass klass);
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jvmtiError Init(ArtJvmTiEnv* env, const jvmtiClassDefinition& def);
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ArtClassDefinition(ArtClassDefinition&& o) = default;
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ArtClassDefinition& operator=(ArtClassDefinition&& o) = default;
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void SetNewDexData(ArtJvmTiEnv* env, jint new_dex_len, unsigned char* new_dex_data) {
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DCHECK(IsInitialized());
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if (new_dex_data == nullptr) {
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return;
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} else if (new_dex_data != dex_data_.get() || new_dex_len != dex_len_) {
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dex_len_ = new_dex_len;
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dex_data_ = MakeJvmtiUniquePtr(env, new_dex_data);
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}
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}
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art::ArrayRef<const unsigned char> GetNewOriginalDexFile() const {
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DCHECK(IsInitialized());
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if (redefined_) {
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return original_dex_file_;
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} else {
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return art::ArrayRef<const unsigned char>();
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}
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}
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bool IsModified() const;
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bool IsInitialized() const {
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return klass_ != nullptr;
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}
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jclass GetClass() const {
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DCHECK(IsInitialized());
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return klass_;
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}
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jobject GetLoader() const {
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DCHECK(IsInitialized());
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return loader_;
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}
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const std::string& GetName() const {
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DCHECK(IsInitialized());
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return name_;
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}
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jobject GetProtectionDomain() const {
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DCHECK(IsInitialized());
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return protection_domain_;
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}
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art::ArrayRef<const unsigned char> GetDexData() const {
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DCHECK(IsInitialized());
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return art::ArrayRef<const unsigned char>(dex_data_.get(), dex_len_);
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}
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private:
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jvmtiError InitCommon(ArtJvmTiEnv* env, jclass klass);
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jclass klass_;
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jobject loader_;
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std::string name_;
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jobject protection_domain_;
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jint dex_len_;
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JvmtiUniquePtr<unsigned char> dex_data_;
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JvmtiUniquePtr<unsigned char> original_dex_file_memory_;
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art::ArrayRef<const unsigned char> original_dex_file_;
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bool redefined_;
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DISALLOW_COPY_AND_ASSIGN(ArtClassDefinition);
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};
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} // namespace openjdkjvmti
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#endif // ART_RUNTIME_OPENJDKJVMTI_TI_CLASS_DEFINITION_H_
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