74 lines
1.3 KiB
C++
74 lines
1.3 KiB
C++
#include "..\e2dbase.h"
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#include "..\e2dtool.h"
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#include "..\e2dmanager.h"
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// GC 机制，用于自动销毁单例
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e2d::GC e2d::GC::_instance;
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e2d::GC::~GC()
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{
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// 删除所有单例
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Game::destroyInstance();
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Renderer::destroyInstance();
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Input::destroyInstance();
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Window::destroyInstance();
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Timer::destroyInstance();
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Player::destroyInstance();
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SceneManager::destroyInstance();
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ActionManager::destroyInstance();
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ColliderManager::destroyInstance();
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}
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// GC 释放池的实现机制：
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// Object 类中的引用计数（_refCount）在一定程度上防止了内存泄漏
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// 它记录了对象被使用的次数，当计数为 0 时，GC 会自动释放这个对象
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// 所有的 Object 对象都应在被使用时（例如 Text 添加到了场景中）
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// 调用 retain 函数保证该对象不被删除，并在不再使用时调用 release 函数
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void e2d::GC::update()
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{
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if (!_notifyed) return;
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_notifyed = false;
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for (auto iter = _pool.begin(); iter != _pool.end();)
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{
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if ((*iter)->getRefCount() <= 0)
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{
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(*iter)->onDestroy();
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delete (*iter);
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iter = _pool.erase(iter);
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}
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else
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{
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++iter;
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}
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}
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}
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void e2d::GC::clear()
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{
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for (auto pObj : _pool)
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{
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delete pObj;
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}
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_pool.clear();
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}
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void e2d::GC::addObject(e2d::Object * object)
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{
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if (object)
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{
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_pool.insert(object);
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}
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}
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e2d::GC * e2d::GC::getInstance()
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{
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return &_instance;
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}
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void e2d::GC::notify()
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{
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_notifyed = true;
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}
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