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Alex Lighteb98b082017-01-25 13:02:32 -08001/* 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.
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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.
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31
Andreas Gampe06c42a52017-07-26 14:17:14 -070032#ifndef ART_OPENJDKJVMTI_TI_CLASS_LOADER_H_
33#define ART_OPENJDKJVMTI_TI_CLASS_LOADER_H_
Alex Lighteb98b082017-01-25 13:02:32 -080034
35#include <string>
36
37#include <jni.h>
38
39#include "art_jvmti.h"
40#include "art_method.h"
41#include "base/array_slice.h"
David Sehr1979c642018-04-26 14:41:18 -070042#include "base/globals.h"
David Sehr79e26072018-04-06 17:58:50 -070043#include "base/mem_map.h"
Alex Lighteb98b082017-01-25 13:02:32 -080044#include "class_linker.h"
David Sehr9e734c72018-01-04 17:56:19 -080045#include "dex/dex_file.h"
David Sehr0225f8e2018-01-31 08:52:24 +000046#include "dex/utf.h"
Alex Lighteb98b082017-01-25 13:02:32 -080047#include "gc_root-inl.h"
Alex Lighteb98b082017-01-25 13:02:32 -080048#include "jni_env_ext-inl.h"
49#include "jvmti.h"
50#include "linear_alloc.h"
Alex Lighteb98b082017-01-25 13:02:32 -080051#include "mirror/array-inl.h"
52#include "mirror/array.h"
53#include "mirror/class-inl.h"
54#include "mirror/class.h"
55#include "mirror/class_loader-inl.h"
56#include "mirror/string-inl.h"
57#include "oat_file.h"
58#include "obj_ptr.h"
59#include "scoped_thread_state_change-inl.h"
60#include "stack.h"
Alex Lighteb98b082017-01-25 13:02:32 -080061#include "thread_list.h"
Andreas Gampe8cf9cb32017-07-19 09:28:38 -070062#include "ti_class_definition.h"
Alex Lighteb98b082017-01-25 13:02:32 -080063#include "transform.h"
Alex Lighteb98b082017-01-25 13:02:32 -080064#include "utils/dex_cache_arrays_layout-inl.h"
65
66namespace openjdkjvmti {
67
68// Class that can redefine a single class's methods.
69// TODO We should really make this be driven by an outside class so we can do multiple classes at
70// the same time and have less required cleanup.
71class ClassLoaderHelper {
72 public:
73 static bool AddToClassLoader(art::Thread* self,
74 art::Handle<art::mirror::ClassLoader> loader,
75 const art::DexFile* dex_file)
76 REQUIRES_SHARED(art::Locks::mutator_lock_);
77
78 // Finds a java.lang.DexFile object that is associated with the given ClassLoader. Each of these
79 // j.l.DexFile objects holds several art::DexFile*s in it.
80 // TODO This should return the actual source java.lang.DexFile object for the klass being loaded.
81 static art::ObjPtr<art::mirror::Object> FindSourceDexFileObject(
82 art::Thread* self, art::Handle<art::mirror::ClassLoader> loader)
83 REQUIRES_SHARED(art::Locks::mutator_lock_);
84
Alex Lightc7588752018-02-20 11:15:54 -080085 // Calls visitor on each java.lang.DexFile associated with the given loader. The visitor should
86 // return true to continue on to the next DexFile or false to stop iterating.
87 template<typename Visitor>
88 static inline void VisitDexFileObjects(art::Thread* self,
89 art::Handle<art::mirror::ClassLoader> loader,
90 const Visitor& visitor)
91 REQUIRES_SHARED(art::Locks::mutator_lock_);
92
Alex Light1babae02017-02-01 15:35:34 -080093 static art::ObjPtr<art::mirror::LongArray> GetDexFileCookie(
94 art::Handle<art::mirror::Object> java_dex_file) REQUIRES_SHARED(art::Locks::mutator_lock_);
95
Alex Lighteb98b082017-01-25 13:02:32 -080096 static art::ObjPtr<art::mirror::LongArray> AllocateNewDexFileCookie(
97 art::Thread* self,
Alex Light1babae02017-02-01 15:35:34 -080098 art::Handle<art::mirror::LongArray> old_dex_file_cookie,
Alex Lighteb98b082017-01-25 13:02:32 -080099 const art::DexFile* new_dex_file) REQUIRES_SHARED(art::Locks::mutator_lock_);
100
101 static void UpdateJavaDexFile(art::ObjPtr<art::mirror::Object> java_dex_file,
102 art::ObjPtr<art::mirror::LongArray> new_cookie)
103 REQUIRES(art::Roles::uninterruptible_) REQUIRES_SHARED(art::Locks::mutator_lock_);
Alex Lightc7588752018-02-20 11:15:54 -0800104
105 private:
106 static art::ObjPtr<art::mirror::ObjectArray<art::mirror::Object>> GetDexElementList(
107 art::Thread* self, art::Handle<art::mirror::ClassLoader> loader)
108 REQUIRES_SHARED(art::Locks::mutator_lock_);
Alex Lighteb98b082017-01-25 13:02:32 -0800109};
110
111} // namespace openjdkjvmti
Andreas Gampe06c42a52017-07-26 14:17:14 -0700112#endif // ART_OPENJDKJVMTI_TI_CLASS_LOADER_H_