mirror of
https://github.com/openharmony/utils_native.git
synced 2026-07-24 23:45:22 -04:00
mamingshuai
57 lines
1.6 KiB
C++
Executable File
57 lines
1.6 KiB
C++
Executable File
/*
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* Copyright (c) 2021 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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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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#ifndef UTILS_BASE_ASHMEM_H
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#define UTILS_BASE_ASHMEM_H
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#include <stddef.h>
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#include <linux/ashmem.h>
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#include "refbase.h"
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#include "parcel.h"
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namespace OHOS {
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int AshmemCreate(const char *name, size_t size);
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int AshmemSetProt(int fd, int prot);
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int AshmemGetSize(int fd);
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class Ashmem : public virtual RefBase {
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public:
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static sptr<Ashmem> CreateAshmem(const char *name, int32_t size);
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void CloseAshmem();
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bool MapAshmem(int mapType);
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bool MapReadAndWriteAshmem();
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bool MapReadOnlyAshmem();
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void UnmapAshmem();
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bool SetProtection(int protectionType);
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int GetProtection();
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int32_t GetAshmemSize();
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bool WriteToAshmem(const void *data, int32_t size, int32_t offset);
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const void *ReadFromAshmem(int32_t size, int32_t offset);
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Ashmem(int fd, int32_t size);
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~Ashmem();
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int GetAshmemFd() const
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{
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return memoryFd_;
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};
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private:
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int memoryFd_;
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int32_t memorySize_;
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int flag_;
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void *startAddr_;
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bool CheckValid(int32_t size, int32_t offset, int cmd);
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};
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} // namespace OHOS
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#endif
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