104 lines
2.3 KiB
C
104 lines
2.3 KiB
C
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/*
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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_HANDLER_H
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#define UTILS_EVENT_HANDLER_H
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#include "errors.h"
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#include "io_event_common.h"
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namespace OHOS {
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namespace Utils {
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class IOEventReactor;
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class IOEventHandler {
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public:
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IOEventHandler();
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explicit IOEventHandler(int fd, EventId events = Events::EVENT_NONE, const EventCallback& cb = nullptr);
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IOEventHandler& operator=(const IOEventHandler&) = delete;
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IOEventHandler(const IOEventHandler&) = delete;
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IOEventHandler& operator=(const IOEventHandler&&) = delete;
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IOEventHandler(const IOEventHandler&&) = delete;
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virtual ~IOEventHandler();
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bool Start(IOEventReactor* reactor);
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bool Stop(IOEventReactor* reactor);
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bool Update(IOEventReactor* reactor);
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inline void SetFd(int fd)
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{
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fd_ = fd;
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}
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inline void SetEvents(EventId events)
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{
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events_ = events;
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}
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inline void SetCallback(const EventCallback& cb)
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{
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cb_ = cb;
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}
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inline int GetFd() const
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{
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return fd_;
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}
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inline EventId GetEvents() const
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{
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return events_;
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}
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inline EventCallback GetCallback() const
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{
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return cb_;
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}
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inline IOEventHandler* Prev() const
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{
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return prev_;
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}
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inline IOEventHandler* Next() const
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{
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return next_;
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}
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void EnableRead();
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void EnableWrite();
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void DisableWrite();
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void DisableAll();
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inline bool IsActive()
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{
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return (prev_ != nullptr && enabled_);
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}
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private:
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IOEventHandler* prev_;
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IOEventHandler* next_;
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int fd_;
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EventId events_;
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EventCallback cb_;
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bool enabled_;
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friend class IOEventReactor;
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};
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} // namespace Utils
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} // namespace OHOS
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#endif /* UTILS_EVENT_HANDLER_H_ */
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