axmol/cocos/base/CCAutoreleasePool.cpp

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

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#include "base/CCAutoreleasePool.h"
#include "base/ccMacros.h"

NS_CC_BEGIN

AutoreleasePool::AutoreleasePool()
: _name("")
#if defined(COCOS2D_DEBUG) && (COCOS2D_DEBUG > 0)
, _isClearing(false)
#endif
{
    _managedObjectArray.reserve(150);
    PoolManager::getInstance()->push(this);
}

AutoreleasePool::AutoreleasePool(const std::string &name)
: _name(name)
#if defined(COCOS2D_DEBUG) && (COCOS2D_DEBUG > 0)
, _isClearing(false)
#endif
{
    _managedObjectArray.reserve(150);
    PoolManager::getInstance()->push(this);
}

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

void AutoreleasePool::addObject(Ref* object)
{
    _managedObjectArray.push_back(object);
}

void AutoreleasePool::clear()
{
#if defined(COCOS2D_DEBUG) && (COCOS2D_DEBUG > 0)
    _isClearing = true;
#endif
    for (const auto &obj : _managedObjectArray)
    {
        obj->release();
    }
    _managedObjectArray.clear();
#if defined(COCOS2D_DEBUG) && (COCOS2D_DEBUG > 0)
    _isClearing = false;
#endif
}

bool AutoreleasePool::contains(Ref* object) const
{
    for (const auto& obj : _managedObjectArray)
    {
        if (obj == object)
            return true;
    }
    return false;
}

void AutoreleasePool::dump()
{
    CCLOG("autorelease pool: %s, number of managed object %d\n", _name.c_str(), static_cast<int>(_managedObjectArray.size()));
    CCLOG("%20s%20s%20s", "Object pointer", "Object id", "reference count");
    for (const auto &obj : _managedObjectArray)
    {
        CC_UNUSED_PARAM(obj);
        CCLOG("%20p%20u\n", obj, obj->getReferenceCount());
    }
}


//--------------------------------------------------------------------
//
// 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("cocos2d autorelease pool");
        s_singleInstance->_releasePoolStack.push_back(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.back();
        _releasePoolStack.pop_back();
        
        delete pool;
    }
}


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

bool PoolManager::isObjectInPools(Ref* obj) const
{
    for (const auto& pool : _releasePoolStack)
    {
        if (pool->contains(obj))
            return true;
    }
    return false;
}

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

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

NS_CC_END