1/* Copyright (C) 2017 The Android Open Source Project
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This file implements interfaces from the file jvmti.h. This implementation
5 * is licensed under the same terms as the file jvmti.h.  The
6 * copyright and license information for the file jvmti.h follows.
7 *
8 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
9 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
10 *
11 * This code is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License version 2 only, as
13 * published by the Free Software Foundation.  Oracle designates this
14 * particular file as subject to the "Classpath" exception as provided
15 * by Oracle in the LICENSE file that accompanied this code.
16 *
17 * This code is distributed in the hope that it will be useful, but WITHOUT
18 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
20 * version 2 for more details (a copy is included in the LICENSE file that
21 * accompanied this code).
22 *
23 * You should have received a copy of the GNU General Public License version
24 * 2 along with this work; if not, write to the Free Software Foundation,
25 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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27 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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30 */
31
32#ifndef ART_RUNTIME_OPENJDKJVMTI_FIXED_UP_DEX_FILE_H_
33#define ART_RUNTIME_OPENJDKJVMTI_FIXED_UP_DEX_FILE_H_
34
35#include <memory>
36#include <vector>
37
38#include "jni.h"
39#include "jvmti.h"
40#include "base/mutex.h"
41#include "dex_file.h"
42
43namespace openjdkjvmti {
44
45// A holder for a DexFile that has been 'fixed up' to ensure it is fully compliant with the
46// published standard (no internal/quick opcodes, all fields are the defined values, etc). This is
47// used to ensure that agents get a consistent dex file regardless of what version of android they
48// are running on.
49class FixedUpDexFile {
50 public:
51  static std::unique_ptr<FixedUpDexFile> Create(const art::DexFile& original)
52      REQUIRES_SHARED(art::Locks::mutator_lock_);
53
54  const art::DexFile& GetDexFile() {
55    return *dex_file_;
56  }
57
58  const unsigned char* Begin() {
59    return data_.data();
60  }
61
62  size_t Size() {
63    return data_.size();
64  }
65
66 private:
67  explicit FixedUpDexFile(std::unique_ptr<const art::DexFile> fixed_up_dex_file,
68                          std::vector<unsigned char> data)
69      : dex_file_(std::move(fixed_up_dex_file)),
70        data_(std::move(data)) {}
71
72  // the fixed up DexFile
73  std::unique_ptr<const art::DexFile> dex_file_;
74  // The backing data for dex_file_.
75  const std::vector<unsigned char> data_;
76
77  DISALLOW_COPY_AND_ASSIGN(FixedUpDexFile);
78};
79
80}  // namespace openjdkjvmti
81
82#endif  // ART_RUNTIME_OPENJDKJVMTI_FIXED_UP_DEX_FILE_H_
83