/
MessageBus.h
54 lines (40 loc) · 1.03 KB
/
MessageBus.h
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#pragma once
#include <mutex>
#include "imessagebus.h"
namespace radiant
{
class MessageBus :
public IMessageBus
{
private:
std::recursive_mutex _lock;
std::map<std::size_t, Listener> _listeners;
bool _processingMessage;
std::size_t _nextId;
public:
MessageBus() :
_nextId(1)
{}
std::size_t addListener(const Listener & listener) override
{
std::lock_guard<std::recursive_mutex> guard(_lock);
auto id = _nextId++;
_listeners.emplace(id, listener);
return id;
}
void removeListener(std::size_t listenerId) override
{
std::lock_guard<std::recursive_mutex> guard(_lock);
assert(_listeners.find(listenerId) != _listeners.end());
_listeners.erase(listenerId);
}
void sendMessage(IMessage& message) override
{
std::lock_guard<std::recursive_mutex> guard(_lock);
for (auto it = _listeners.begin(); it != _listeners.end(); /* in-loop */)
{
(*it++).second(message);
}
}
};
}