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-rw-r--r--native/jni/src/utils/exclusive_ownership_pointer.h81
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diff --git a/native/jni/src/utils/exclusive_ownership_pointer.h b/native/jni/src/utils/exclusive_ownership_pointer.h
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--- a/native/jni/src/utils/exclusive_ownership_pointer.h
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-/*
- * Copyright (C) 2013, 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 LATINIME_EXCLUSIVE_OWNERSHIP_POINTER_H
-#define LATINIME_EXCLUSIVE_OWNERSHIP_POINTER_H
-
-#include "defines.h"
-
-namespace latinime {
-
-template<class T>
-class ExclusiveOwnershipPointer {
- public:
- // This instance become an owner of the raw pointer.
- AK_FORCE_INLINE ExclusiveOwnershipPointer(T *const rawPointer)
- : mPointer(rawPointer),
- mSharedOwnerPtr(new (ExclusiveOwnershipPointer<T> *)(this)) {}
-
- // Move the ownership.
- AK_FORCE_INLINE ExclusiveOwnershipPointer(const ExclusiveOwnershipPointer<T> &pointer)
- : mPointer(pointer.mPointer), mSharedOwnerPtr(pointer.mSharedOwnerPtr) {
- transferOwnership(&pointer);
- }
-
- AK_FORCE_INLINE ~ExclusiveOwnershipPointer() {
- deletePointersIfHavingOwnership();
- }
-
- AK_FORCE_INLINE T *get() const {
- return mPointer;
- }
-
- private:
- // This class allows to copy and ensures only one instance has the ownership of the
- // managed pointer.
- DISALLOW_DEFAULT_CONSTRUCTOR(ExclusiveOwnershipPointer);
- DISALLOW_ASSIGNMENT_OPERATOR(ExclusiveOwnershipPointer);
-
- void transferOwnership(const ExclusiveOwnershipPointer<T> *const src) {
- if (*mSharedOwnerPtr != src) {
- AKLOGE("Failed to transfer the ownership because src is not the current owner."
- "src: %p, owner: %p", src, *mSharedOwnerPtr);
- ASSERT(false);
- return;
- }
- // Transfer the ownership from src to this instance.
- *mSharedOwnerPtr = this;
- }
-
- void deletePointersIfHavingOwnership() {
- if (mSharedOwnerPtr && *mSharedOwnerPtr == this) {
- if (mPointer) {
- if (DEBUG_DICT) {
- AKLOGI("Releasing pointer: %p", mPointer);
- }
- delete mPointer;
- }
- delete mSharedOwnerPtr;
- }
- }
-
- T *mPointer;
- // mSharedOwnerPtr points a shared memory space where the instance which has the ownership is
- // stored.
- ExclusiveOwnershipPointer<T> **mSharedOwnerPtr;
-};
-} // namespace latinime
-#endif /* LATINIME_EXCLUSIVE_OWNERSHIP_POINTER_H */