35 lines
1.3 KiB
C++
35 lines
1.3 KiB
C++
#pragma once
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/**
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* The NotifierInterface class describes an interface for notifying different components, within Bloom, of something
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* important that has just happened.
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*
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* It's important to note that this interface only describes the issuing of notifications. It *does not* describe
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* the listening for notifications. The listening can be defined by the implementation.
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*
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* For example, consider the EventFdNotifier implementation. That class is just an RAII wrapper for a Linux eventfd
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* object. Notifications are recorded by incrementing the eventfd counter. And they can be listened for, using
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* Linux system functions like poll(), select(), and similar.
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*
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* The EventListener class can hold a pointer to a NotifierInterface, where it will invoke
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* NotifierInterface::notify() everytime a new event is registered on the listener.
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*/
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class NotifierInterface
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{
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public:
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NotifierInterface() = default;
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virtual ~NotifierInterface() noexcept = default;
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NotifierInterface(NotifierInterface& other) = delete;
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NotifierInterface& operator = (NotifierInterface& other) = delete;
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NotifierInterface& operator = (NotifierInterface&& other) = delete;
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NotifierInterface(NotifierInterface&& other) noexcept = default;
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/**
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* Should record a notification.
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*/
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virtual void notify() = 0;
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};
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