Move ArtField to native

Add linear alloc. Moved ArtField to be native object. Changed image
writer to put ArtFields after the mirror section.

Savings:
2MB on low ram devices
4MB on normal devices

Total PSS measurements before (normal N5, 95s after shell start):
Image size: 7729152 bytes
23112 kB: .NonMoving
23212 kB: .NonMoving
22868 kB: .NonMoving
23072 kB: .NonMoving
22836 kB: .NonMoving
19618 kB: .Zygote
19850 kB: .Zygote
19623 kB: .Zygote
19924 kB: .Zygote
19612 kB: .Zygote
Avg: 42745.4 kB

After:
Image size: 7462912 bytes
17440 kB: .NonMoving
16776 kB: .NonMoving
16804 kB: .NonMoving
17812 kB: .NonMoving
16820 kB: .NonMoving
18788 kB: .Zygote
18856 kB: .Zygote
19064 kB: .Zygote
18841 kB: .Zygote
18629 kB: .Zygote
3499 kB: .LinearAlloc
3408 kB: .LinearAlloc
3424 kB: .LinearAlloc
3600 kB: .LinearAlloc
3436 kB: .LinearAlloc
Avg: 39439.4 kB

No reflection performance changes.

Bug: 19264997
Bug: 17643507

Change-Id: I10c73a37913332080aeb978c7c94713bdfe4fe1c

1 files changed, 204 insertions, 0 deletions

diff --git a/runtime/art_field.h b/runtime/art_field.h
new file mode 100644
index 0000000..5bdbe71
--- /dev/null
+++ b/runtime/art_field.h
@@ -0,0 +1,204 @@
+/*
+ * 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.
+ */
+
+#ifndef ART_RUNTIME_ART_FIELD_H_
+#define ART_RUNTIME_ART_FIELD_H_
+
+#include <jni.h>
+
+#include "gc_root.h"
+#include "modifiers.h"
+#include "object_callbacks.h"
+#include "offsets.h"
+#include "primitive.h"
+#include "read_barrier_option.h"
+
+namespace art {
+
+class DexFile;
+class ScopedObjectAccessAlreadyRunnable;
+
+namespace mirror {
+class Class;
+class DexCache;
+class Object;
+class String;
+}  // namespace mirror
+
+class ArtField {
+ public:
+  ArtField();
+
+  mirror::Class* GetDeclaringClass() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  void SetDeclaringClass(mirror::Class *new_declaring_class)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  uint32_t GetAccessFlags() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  void SetAccessFlags(uint32_t new_access_flags) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+    // Not called within a transaction.
+    access_flags_ = new_access_flags;
+  }
+
+  bool IsPublic() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+    return (GetAccessFlags() & kAccPublic) != 0;
+  }
+
+  bool IsStatic() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+    return (GetAccessFlags() & kAccStatic) != 0;
+  }
+
+  bool IsFinal() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+    return (GetAccessFlags() & kAccFinal) != 0;
+  }
+
+  uint32_t GetDexFieldIndex() {
+    return field_dex_idx_;
+  }
+
+  void SetDexFieldIndex(uint32_t new_idx) {
+    // Not called within a transaction.
+    field_dex_idx_ = new_idx;
+  }
+
+  // Offset to field within an Object.
+  MemberOffset GetOffset() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  static MemberOffset OffsetOffset() {
+    return MemberOffset(OFFSETOF_MEMBER(ArtField, offset_));
+  }
+
+  MemberOffset GetOffsetDuringLinking() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  void SetOffset(MemberOffset num_bytes) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  // field access, null object for static fields
+  uint8_t GetBoolean(mirror::Object* object) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  template<bool kTransactionActive>
+  void SetBoolean(mirror::Object* object, uint8_t z) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  int8_t GetByte(mirror::Object* object) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  template<bool kTransactionActive>
+  void SetByte(mirror::Object* object, int8_t b) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  uint16_t GetChar(mirror::Object* object) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  template<bool kTransactionActive>
+  void SetChar(mirror::Object* object, uint16_t c) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  int16_t GetShort(mirror::Object* object) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  template<bool kTransactionActive>
+  void SetShort(mirror::Object* object, int16_t s) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  int32_t GetInt(mirror::Object* object) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  template<bool kTransactionActive>
+  void SetInt(mirror::Object* object, int32_t i) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  int64_t GetLong(mirror::Object* object) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  template<bool kTransactionActive>
+  void SetLong(mirror::Object* object, int64_t j) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  float GetFloat(mirror::Object* object) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  template<bool kTransactionActive>
+  void SetFloat(mirror::Object* object, float f) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  double GetDouble(mirror::Object* object) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  template<bool kTransactionActive>
+  void SetDouble(mirror::Object* object, double d) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  mirror::Object* GetObject(mirror::Object* object) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  template<bool kTransactionActive>
+  void SetObject(mirror::Object* object, mirror::Object* l)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  // Raw field accesses.
+  uint32_t Get32(mirror::Object* object) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  template<bool kTransactionActive>
+  void Set32(mirror::Object* object, uint32_t new_value)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  uint64_t Get64(mirror::Object* object) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  template<bool kTransactionActive>
+  void Set64(mirror::Object* object, uint64_t new_value) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  mirror::Object* GetObj(mirror::Object* object) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  template<bool kTransactionActive>
+  void SetObj(mirror::Object* object, mirror::Object* new_value)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  void VisitRoots(RootVisitor* visitor)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  bool IsVolatile() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+    return (GetAccessFlags() & kAccVolatile) != 0;
+  }
+
+  // Returns an instance field with this offset in the given class or nullptr if not found.
+  static ArtField* FindInstanceFieldWithOffset(mirror::Class* klass, uint32_t field_offset)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  const char* GetName() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  // Resolves / returns the name from the dex cache.
+  mirror::String* GetStringName(Thread* self, bool resolve)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  const char* GetTypeDescriptor() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  Primitive::Type GetTypeAsPrimitiveType() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  bool IsPrimitiveType() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  template <bool kResolve>
+  mirror::Class* GetType() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  size_t FieldSize() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  mirror::DexCache* GetDexCache() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  const DexFile* GetDexFile() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  GcRoot<mirror::Class>& DeclaringClassRoot() {
+    return declaring_class_;
+  }
+
+ private:
+  GcRoot<mirror::Class> declaring_class_;
+
+  uint32_t access_flags_;
+
+  // Dex cache index of field id
+  uint32_t field_dex_idx_;
+
+  // Offset of field within an instance or in the Class' static fields
+  uint32_t offset_;
+};
+
+}  // namespace art
+
+#endif  // ART_RUNTIME_ART_FIELD_H_