stack_trace_element.h revision 4f1ebc2b86c8467d1ecb3ec655316e6d7ee8b8b5 
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 "object.h"
21#include "object_callbacks.h"
22#include "read_barrier.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 : public Object {
33 public:
34  String* GetDeclaringClass() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
35    return GetFieldObject<String>(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, declaring_class_));
36  }
37
38  String* GetMethodName() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
39    return GetFieldObject<String>(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, method_name_));
40  }
41
42  String* GetFileName() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
43    return GetFieldObject<String>(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, file_name_));
44  }
45
46  int32_t GetLineNumber() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
47    return GetField32(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, line_number_));
48  }
49
50  static StackTraceElement* Alloc(Thread* self, Handle<String> declaring_class,
51                                  Handle<String> method_name, Handle<String> file_name,
52                                  int32_t line_number)
53      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
54
55  static void SetClass(Class* java_lang_StackTraceElement);
56  static void ResetClass();
57  static void VisitRoots(RootCallback* callback, void* arg)
58      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
59  static Class* GetStackTraceElement() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
60    DCHECK(java_lang_StackTraceElement_ != NULL);
61    return ReadBarrier::BarrierForRoot<mirror::Class, kWithReadBarrier>(
62        &java_lang_StackTraceElement_);
63  }
64
65 private:
66  // Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses".
67  HeapReference<String> declaring_class_;
68  HeapReference<String> file_name_;
69  HeapReference<String> method_name_;
70  int32_t line_number_;
71
72  template<bool kTransactionActive>
73  void Init(Handle<String> declaring_class, Handle<String> method_name, Handle<String> file_name,
74            int32_t line_number)
75      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
76
77  static Class* java_lang_StackTraceElement_;
78
79  friend struct art::StackTraceElementOffsets;  // for verifying offset information
80  DISALLOW_IMPLICIT_CONSTRUCTORS(StackTraceElement);
81};
82
83}  // namespace mirror
84}  // namespace art
85
86#endif  // ART_RUNTIME_MIRROR_STACK_TRACE_ELEMENT_H_
87