1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ART_RUNTIME_MIRROR_STACK_TRACE_ELEMENT_H_
18#define ART_RUNTIME_MIRROR_STACK_TRACE_ELEMENT_H_
19
20#include "gc_root.h"
21#include "object.h"
22#include "object_callbacks.h"
23
24namespace art {
25
26template<class T> class Handle;
27struct StackTraceElementOffsets;
28
29namespace mirror {
30
31// C++ mirror of java.lang.StackTraceElement
32class MANAGED StackTraceElement FINAL : public Object {
33 public:
34  String* GetDeclaringClass() REQUIRES_SHARED(Locks::mutator_lock_) {
35    return GetFieldObject<String>(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, declaring_class_));
36  }
37
38  String* GetMethodName() REQUIRES_SHARED(Locks::mutator_lock_) {
39    return GetFieldObject<String>(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, method_name_));
40  }
41
42  String* GetFileName() REQUIRES_SHARED(Locks::mutator_lock_) {
43    return GetFieldObject<String>(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, file_name_));
44  }
45
46  int32_t GetLineNumber() REQUIRES_SHARED(Locks::mutator_lock_) {
47    return GetField32(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, line_number_));
48  }
49
50  static StackTraceElement* Alloc(Thread* self,
51                                  Handle<String> declaring_class,
52                                  Handle<String> method_name,
53                                  Handle<String> file_name,
54                                  int32_t line_number)
55      REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_);
56
57  static void SetClass(ObjPtr<Class> java_lang_StackTraceElement);
58  static void ResetClass();
59  static void VisitRoots(RootVisitor* visitor)
60      REQUIRES_SHARED(Locks::mutator_lock_);
61  static Class* GetStackTraceElement() REQUIRES_SHARED(Locks::mutator_lock_) {
62    DCHECK(!java_lang_StackTraceElement_.IsNull());
63    return java_lang_StackTraceElement_.Read();
64  }
65
66 private:
67  // Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses".
68  HeapReference<String> declaring_class_;
69  HeapReference<String> file_name_;
70  HeapReference<String> method_name_;
71  int32_t line_number_;
72
73  template<bool kTransactionActive>
74  void Init(ObjPtr<String> declaring_class,
75            ObjPtr<String> method_name,
76            ObjPtr<String> file_name,
77            int32_t line_number)
78      REQUIRES_SHARED(Locks::mutator_lock_);
79
80  static GcRoot<Class> java_lang_StackTraceElement_;
81
82  friend struct art::StackTraceElementOffsets;  // for verifying offset information
83  DISALLOW_IMPLICIT_CONSTRUCTORS(StackTraceElement);
84};
85
86}  // namespace mirror
87}  // namespace art
88
89#endif  // ART_RUNTIME_MIRROR_STACK_TRACE_ELEMENT_H_
90