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guoling
52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
/*
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* Tencent is pleased to support the open source community by making
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* MMKV available.
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*
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* Copyright (C) 2019 THL A29 Limited, a Tencent company.
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* All rights reserved.
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*
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* Licensed under the BSD 3-Clause License (the "License"); you may not use
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* this file except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* https://opensource.org/licenses/BSD-3-Clause
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include "MMKVPredef.h"
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#if defined(MMKV_IOS) && defined(__cplusplus)
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MMKV_NAMESPACE_BEGIN
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class MLockPtr {
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size_t m_lockDownSize;
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uint8_t *m_lockedPtr;
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public:
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MLockPtr(void *ptr, size_t size);
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MLockPtr(MLockPtr &&other);
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~MLockPtr();
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bool isLocked() const {
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return (m_lockedPtr != nullptr);
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}
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// just forbid it for possibly misuse
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explicit MLockPtr(const MLockPtr &other) = delete;
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MLockPtr &operator=(const MLockPtr &other) = delete;
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};
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std::pair<bool, MLockPtr> guardForBackgroundWriting(void *ptr, size_t size);
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MMKV_NAMESPACE_END
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#endif
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