/// <summary>
/// 缓存对象数量快超出一级缓存时，对其进行扩容
/// </summary>
private void try_fix_pool()
{
int free_cache_count = get_free_cache_count();
int cache_count = get_cache_count();
// 数量超过一级缓存的90%时
if ((((float)cache_count) / ((float)mCacheBlockMaxCount)) >= 0.9f)
{
// 当前内存池中可用对象的比例少于20%时，需要进行扩容
if ((((float)free_cache_count) / ((float)cache_count)) < 0.2f)
{
mCacheBlockMaxCount += 32;
if (mCacheBlockMaxCount > mBlockLimitCount)
{
mCacheBlockMaxCount = mBlockLimitCount;
}
}
else
{
// 销毁当前内存池中未被使用的对象，销毁数量为50%
for (int i = 0; i < mPool.Count; i++)
{
CachedObjectInfo info = mPool[i];
int num = info.get_free_cache_count();
info.shrink(num / 2);
}
}
}
}
/// <summary>
/// 定时检查标记为可销毁的对象
/// </summary>
public void update()
{
float time = Time.time;
if ((time - mLastUpdateTime) >= mUpdateFrequency)
{
mLastUpdateTime = time;
if (mPool != null)
{
// 每次随机获取一个CacheObjectInfo
int index = UnityEngine.Random.Range(0, mPool.Count);
if ((index >= 0) && (index < mPool.Count))
{
CachedObjectInfo info = mPool[index];
if (info == null)
{
mPool.RemoveAt(index);
}
else
{
// 根据标记可销毁的时间间隔来计算需要销毁的对象数量
float num = Time.time - info.get_weight();
int max_shrink_count = (int)(num / mWornTime);
if (max_shrink_count > 0)
{
int free_cache_count = info.get_free_cache_count();
if (free_cache_count <= 0)// 无可用缓存对象时，移除CacheObjectInfo
{
mPool.RemoveAt(index);
}
else
{
// 移除的数量不能超出当前可用缓存对象
max_shrink_count = (max_shrink_count <= free_cache_count) ? max_shrink_count : free_cache_count;
info.shrink(max_shrink_count);
}
}
}
}
}
}
}