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 #include "stack_trace_element.h"
18
19 #include "class.h"
20 #include "class-inl.h"
21 #include "gc/accounting/card_table-inl.h"
22 #include "object-inl.h"
23 #include "handle_scope-inl.h"
24 #include "string.h"
25
26 namespace art {
27 namespace mirror {
28
29 GcRoot<Class> StackTraceElement::java_lang_StackTraceElement_;
30
SetClass(Class * java_lang_StackTraceElement)31 void StackTraceElement::SetClass(Class* java_lang_StackTraceElement) {
32 CHECK(java_lang_StackTraceElement_.IsNull());
33 CHECK(java_lang_StackTraceElement != nullptr);
34 java_lang_StackTraceElement_ = GcRoot<Class>(java_lang_StackTraceElement);
35 }
36
ResetClass()37 void StackTraceElement::ResetClass() {
38 CHECK(!java_lang_StackTraceElement_.IsNull());
39 java_lang_StackTraceElement_ = GcRoot<Class>(nullptr);
40 }
41
Alloc(Thread * self,Handle<String> declaring_class,Handle<String> method_name,Handle<String> file_name,int32_t line_number)42 StackTraceElement* StackTraceElement::Alloc(Thread* self, Handle<String> declaring_class,
43 Handle<String> method_name, Handle<String> file_name,
44 int32_t line_number) {
45 StackTraceElement* trace =
46 down_cast<StackTraceElement*>(GetStackTraceElement()->AllocObject(self));
47 if (LIKELY(trace != nullptr)) {
48 if (Runtime::Current()->IsActiveTransaction()) {
49 trace->Init<true>(declaring_class, method_name, file_name, line_number);
50 } else {
51 trace->Init<false>(declaring_class, method_name, file_name, line_number);
52 }
53 }
54 return trace;
55 }
56
57 template<bool kTransactionActive>
Init(Handle<String> declaring_class,Handle<String> method_name,Handle<String> file_name,int32_t line_number)58 void StackTraceElement::Init(Handle<String> declaring_class, Handle<String> method_name,
59 Handle<String> file_name, int32_t line_number) {
60 SetFieldObject<kTransactionActive>(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, declaring_class_),
61 declaring_class.Get());
62 SetFieldObject<kTransactionActive>(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, method_name_),
63 method_name.Get());
64 SetFieldObject<kTransactionActive>(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, file_name_),
65 file_name.Get());
66 SetField32<kTransactionActive>(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, line_number_),
67 line_number);
68 }
69
VisitRoots(RootVisitor * visitor)70 void StackTraceElement::VisitRoots(RootVisitor* visitor) {
71 java_lang_StackTraceElement_.VisitRootIfNonNull(visitor, RootInfo(kRootStickyClass));
72 }
73
74
75 } // namespace mirror
76 } // namespace art
77