78 lines
1.8 KiB
C++
78 lines
1.8 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2013 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#ifndef XENIA_BASE_DELEGATE_H_
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#define XENIA_BASE_DELEGATE_H_
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#include <functional>
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#include <mutex>
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#include <vector>
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namespace xe {
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// TODO(benvanik): go lockfree, and don't hold the lock while emitting.
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template <typename... Args>
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class Delegate {
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public:
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typedef std::function<void(Args...)> Listener;
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void AddListener(Listener const& listener) {
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std::lock_guard<std::mutex> guard(lock_);
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listeners_.push_back(listener);
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}
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void RemoveAllListeners() {
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std::lock_guard<std::mutex> guard(lock_);
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listeners_.clear();
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}
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void operator()(Args... args) {
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std::lock_guard<std::mutex> guard(lock_);
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for (auto& listener : listeners_) {
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listener(args...);
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}
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}
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private:
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std::mutex lock_;
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std::vector<Listener> listeners_;
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};
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template <>
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class Delegate<void> {
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public:
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typedef std::function<void()> Listener;
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void AddListener(Listener const& listener) {
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std::lock_guard<std::mutex> guard(lock_);
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listeners_.push_back(listener);
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}
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void RemoveAllListeners() {
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std::lock_guard<std::mutex> guard(lock_);
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listeners_.clear();
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}
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void operator()() {
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std::lock_guard<std::mutex> guard(lock_);
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for (auto& listener : listeners_) {
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listener();
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}
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}
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private:
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std::mutex lock_;
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std::vector<Listener> listeners_;
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};
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} // namespace xe
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#endif // XENIA_BASE_DELEGATE_H_
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