-#pragma once
-
-// Usage:
-//
-// ACTIONS_LIST actionsList;
-// CLASS myClass;
-// DATA1 myData1;
-// DATA2 myData2;
-//
-// actionsList.Enqueue(myClass, &CLASS::myMethod1, myData1);
-// actionsList.Enqueue(myClass, &CLASS::myMethod2, myData2);
-//
-// actionsList.InvokeAll();
-
-#include <vector>
-#include <functional>
-#include <mutex>
-
-// Generalized actor type - a method of some class with one argument
-template <class ACTIVE_CLASS, typename DATA_TYPE>
-struct ACTOR
-{
- using TYPE = void (ACTIVE_CLASS::*)(DATA_TYPE);
-};
-
-// Abstract base action class for polymorphic action invocation
-class BASE_ACTION
-{
-public:
- virtual ~BASE_ACTION() {}
- virtual void Invoke() = 0;
-};
-
-// Concrete generalized action type - an actor with it's data and owner
-template <class ACTIVE_CLASS, typename DATA_TYPE>
-class ACTION : public BASE_ACTION
-{
-public:
- ACTION(ACTIVE_CLASS & ac,
- typename ACTOR<ACTIVE_CLASS, DATA_TYPE>::TYPE a,
- DATA_TYPE d)
- : activeClass(ac), actor(a), data(d) {}
- void Invoke() override
- {
- (activeClass.*actor)(data);
- }
-private:
- ACTION(const ACTION<ACTIVE_CLASS, DATA_TYPE> & rvalue);
- ACTION<ACTIVE_CLASS, DATA_TYPE> & operator=(const ACTION<ACTIVE_CLASS, DATA_TYPE> & rvalue);
-
- ACTIVE_CLASS & activeClass;
- typename ACTOR<ACTIVE_CLASS, DATA_TYPE>::TYPE actor;
- DATA_TYPE data;
-};
-
-// A list of an actions
-// All methods are thread-safe
-class ACTIONS_LIST
-{
-public:
- ~ACTIONS_LIST()
- {
- std::lock_guard lock(m_mutex);
- for (auto action : m_list)
- delete action;
- }
-
- auto begin() { std::lock_guard lock(m_mutex); return m_list.begin(); }
- auto end() { std::lock_guard lock(m_mutex); return m_list.end(); }
- auto begin() const { std::lock_guard lock(m_mutex); return m_list.begin(); }
- auto end() const { std::lock_guard lock(m_mutex); return m_list.end(); }
-
- bool empty() const { std::lock_guard lock(m_mutex); return m_list.empty(); }
- size_t size() const { std::lock_guard lock(m_mutex); return m_list.size(); }
- void swap(ACTIONS_LIST & rhs) { std::lock_guard lock(m_mutex); m_list.swap(rhs.m_list); }
-
- // Add an action to list
- template <class ACTIVE_CLASS, typename DATA_TYPE>
- void Enqueue(ACTIVE_CLASS & ac,
- typename ACTOR<ACTIVE_CLASS, DATA_TYPE>::TYPE a,
- DATA_TYPE d)
- {
- std::lock_guard lock(m_mutex);
- m_list.push_back(new ACTION<ACTIVE_CLASS, DATA_TYPE>(ac, a, d));
- }
- // Invoke all actions in the list
- void InvokeAll()
- {
- std::lock_guard lock(m_mutex);
- for (auto action : m_list)
- action->Invoke();
- }
-private:
- mutable std::mutex m_mutex;
- std::vector<BASE_ACTION*> m_list;
-};
git.stg.codes / stg.git / commitdiff