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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  
22  namespace art {
23  
24  template<class T> class Handle;
25  struct StackTraceElementOffsets;
26  
27  namespace mirror {
28  
29  // C++ mirror of java.lang.StackTraceElement
30  class MANAGED StackTraceElement final : public Object {
31   public:
32    MIRROR_CLASS("Ljava/lang/StackTraceElement;");
33  
34    ObjPtr<String> GetDeclaringClass() REQUIRES_SHARED(Locks::mutator_lock_);
35  
36    ObjPtr<String> GetMethodName() REQUIRES_SHARED(Locks::mutator_lock_);
37  
38    ObjPtr<String> GetFileName() REQUIRES_SHARED(Locks::mutator_lock_);
39  
40    int32_t GetLineNumber() REQUIRES_SHARED(Locks::mutator_lock_) {
41      return GetField32(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, line_number_));
42    }
43  
44    static ObjPtr<StackTraceElement> Alloc(Thread* self,
45                                           Handle<String> declaring_class,
46                                           Handle<String> method_name,
47                                           Handle<String> file_name,
48                                           int32_t line_number)
49        REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_);
50  
51   private:
52    // Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses".
53    HeapReference<String> declaring_class_;
54    HeapReference<String> file_name_;
55    HeapReference<String> method_name_;
56    int32_t line_number_;
57  
58    template<bool kTransactionActive>
59    void Init(ObjPtr<String> declaring_class,
60              ObjPtr<String> method_name,
61              ObjPtr<String> file_name,
62              int32_t line_number)
63        REQUIRES_SHARED(Locks::mutator_lock_);
64  
65    friend struct art::StackTraceElementOffsets;  // for verifying offset information
66    DISALLOW_IMPLICIT_CONSTRUCTORS(StackTraceElement);
67  };
68  
69  }  // namespace mirror
70  }  // namespace art
71  
72  #endif  // ART_RUNTIME_MIRROR_STACK_TRACE_ELEMENT_H_
73