64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
/*
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* Copyright (c) 2023 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_EVENT_DEMULTIPLEXER_H
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#define UTILS_EVENT_DEMULTIPLEXER_H
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#include <mutex>
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#include <cstdint>
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#include <vector>
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#include <set>
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#include "io_event_common.h"
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#include "errors.h"
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namespace OHOS {
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namespace Utils {
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class IOEventHandler;
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class IOEventEpoll {
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public:
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using REventId = uint32_t;
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using EPEventId = uint32_t;
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static constexpr int EPOLL_MAX_EVENTS_INIT = 8;
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static constexpr int EXPANSION_COEFF = 2;
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IOEventEpoll();
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IOEventEpoll(const IOEventEpoll&) = delete;
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IOEventEpoll& operator=(const IOEventEpoll&) = delete;
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virtual ~IOEventEpoll();
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virtual ErrCode SetUp();
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virtual void CleanUp();
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virtual ErrCode Polling(int timeout, std::vector<std::pair<int, REventId>>&);
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virtual ErrCode ModifyEvents(int fd, REventId events);
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private:
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EPEventId Reactor2Epoll(REventId reactorEvent);
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REventId Epoll2Reactor(EPEventId epollEvents);
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bool OperateEpoll(int op, int fd, EPEventId epollEvents);
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int epollFd_;
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int maxEvents_;
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std::set<int> interestFds_;
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};
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} // Utils
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} // OHOS
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#endif /* UTILS_EVENT_DEMULTIPLEXER_H_ */
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