upload android base code part3

android/art/runtime/mirror/stack_trace_element.cc

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "stack_trace_element.h"
+
+#include "class.h"
+#include "class-inl.h"
+#include "gc/accounting/card_table-inl.h"
+#include "gc_root-inl.h"
+#include "object-inl.h"
+#include "handle_scope-inl.h"
+#include "string.h"
+
+namespace art {
+namespace mirror {
+
+GcRoot<Class> StackTraceElement::java_lang_StackTraceElement_;
+
+void StackTraceElement::SetClass(ObjPtr<Class> java_lang_StackTraceElement) {
+  CHECK(java_lang_StackTraceElement_.IsNull());
+  CHECK(java_lang_StackTraceElement != nullptr);
+  java_lang_StackTraceElement_ = GcRoot<Class>(java_lang_StackTraceElement);
+}
+
+void StackTraceElement::ResetClass() {
+  CHECK(!java_lang_StackTraceElement_.IsNull());
+  java_lang_StackTraceElement_ = GcRoot<Class>(nullptr);
+}
+
+StackTraceElement* StackTraceElement::Alloc(Thread* self,
+                                            Handle<String> declaring_class,
+                                            Handle<String> method_name,
+                                            Handle<String> file_name,
+                                            int32_t line_number) {
+  ObjPtr<StackTraceElement> trace =
+      ObjPtr<StackTraceElement>::DownCast(GetStackTraceElement()->AllocObject(self));
+  if (LIKELY(trace != nullptr)) {
+    if (Runtime::Current()->IsActiveTransaction()) {
+      trace->Init<true>(declaring_class.Get(), method_name.Get(), file_name.Get(), line_number);
+    } else {
+      trace->Init<false>(declaring_class.Get(), method_name.Get(), file_name.Get(), line_number);
+    }
+  }
+  return trace.Ptr();
+}
+
+template<bool kTransactionActive>
+void StackTraceElement::Init(ObjPtr<String> declaring_class,
+                             ObjPtr<String> method_name,
+                             ObjPtr<String> file_name,
+                             int32_t line_number) {
+  SetFieldObject<kTransactionActive>(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, declaring_class_),
+                                     declaring_class);
+  SetFieldObject<kTransactionActive>(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, method_name_),
+                                     method_name);
+  SetFieldObject<kTransactionActive>(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, file_name_),
+                                     file_name);
+  SetField32<kTransactionActive>(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, line_number_),
+                                 line_number);
+}
+
+void StackTraceElement::VisitRoots(RootVisitor* visitor) {
+  java_lang_StackTraceElement_.VisitRootIfNonNull(visitor, RootInfo(kRootStickyClass));
+}
+
+
+}  // namespace mirror
+}  // namespace art