axmol/cocos/base/CCAutoreleasePool.cpp

/****************************************************************************
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2013-2014 Chukong Technologies Inc.

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#include "CCAutoreleasePool.h"
#include "ccMacros.h"

NS_CC_BEGIN

AutoreleasePool::AutoreleasePool()
{
    _managedObjectArray.reserve(150);
    
    PoolManager::getInstance()->push(this);
}

AutoreleasePool::~AutoreleasePool()
{
    CCLOGINFO("deallocing AutoreleasePool: %p", this);
    _managedObjectArray.clear();
    
    PoolManager::getInstance()->pop();
}

void AutoreleasePool::addObject(Object* object)
{
    _managedObjectArray.pushBack(object);

    CCASSERT(object->_reference > 1, "reference count should be greater than 1");
}

void AutoreleasePool::clear()
{
    if (!_managedObjectArray.empty())
    {
        _managedObjectArray.clear();
    }
}


//--------------------------------------------------------------------
//
// PoolManager
//
//--------------------------------------------------------------------

PoolManager* PoolManager::s_singleInstance = nullptr;

PoolManager* PoolManager::getInstance()
{
    if (s_singleInstance == nullptr)
    {
        s_singleInstance = new PoolManager();
        // Add the first auto release pool
        s_singleInstance->_curReleasePool = new AutoreleasePool();
        s_singleInstance->_releasePoolStack.push(s_singleInstance->_curReleasePool);
    }
    return s_singleInstance;
}

void PoolManager::destroyInstance()
{
    delete s_singleInstance;
    s_singleInstance = nullptr;
}

PoolManager::PoolManager()
{
}

PoolManager::~PoolManager()
{
    CCLOGINFO("deallocing PoolManager: %p", this);
    
    while (!_releasePoolStack.empty())
    {
        AutoreleasePool* pool = _releasePoolStack.top();
        _releasePoolStack.pop();
        
        delete pool;
    }
}


AutoreleasePool* PoolManager::getCurrentPool() const
{
    return _curReleasePool;
}

void PoolManager::push(AutoreleasePool *pool)
{
    _releasePoolStack.push(pool);
    _curReleasePool = pool;
}

void PoolManager::pop()
{
    // Can not pop the pool that created by engine
    CC_ASSERT(_releasePoolStack.size() >= 1);
    
    _releasePoolStack.pop();
    
    // Should update _curReleasePool if a temple pool is released
    if (_releasePoolStack.size() > 1)
    {
        _curReleasePool = _releasePoolStack.top();
    }
}

NS_CC_END