upload android base code part3

android/art/runtime/gc_root-inl.h

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#ifndef ART_RUNTIME_GC_ROOT_INL_H_
+#define ART_RUNTIME_GC_ROOT_INL_H_
+
+#include "gc_root.h"
+
+#include <sstream>
+
+#include "obj_ptr-inl.h"
+#include "read_barrier-inl.h"
+
+namespace art {
+
+template<class MirrorType>
+template<ReadBarrierOption kReadBarrierOption>
+inline MirrorType* GcRoot<MirrorType>::Read(GcRootSource* gc_root_source) const {
+  return down_cast<MirrorType*>(
+      ReadBarrier::BarrierForRoot<mirror::Object, kReadBarrierOption>(&root_, gc_root_source));
+}
+
+template<class MirrorType>
+inline GcRoot<MirrorType>::GcRoot(MirrorType* ref)
+    : root_(mirror::CompressedReference<mirror::Object>::FromMirrorPtr(ref)) { }
+
+template<class MirrorType>
+inline GcRoot<MirrorType>::GcRoot(ObjPtr<MirrorType> ref)
+    : GcRoot(ref.Ptr()) { }
+
+inline std::string RootInfo::ToString() const {
+  std::ostringstream oss;
+  Describe(oss);
+  return oss.str();
+}
+
+}  // namespace art
+#endif  // ART_RUNTIME_GC_ROOT_INL_H_