/// <summary>
/// Creates a new <see cref="MemoryPool"/>.
/// </summary>
/// <param name="pageSize">The desired page size. Must be between 4KB and 256KB</param>
/// <param name="maximumBufferSize">The desired maximum size of the allocation. Note: could be less if there is not enough system memory.</param>
/// <param name="utilizationLevel">Specifies the desired utilization level of the allocated space.</param>
public MemoryPool(int pageSize = 64 * 1024, long maximumBufferSize = -1, TargetUtilizationLevels utilizationLevel = TargetUtilizationLevels.Low)
{
if (pageSize < 4096 || pageSize > 256 * 1024)
{
throw new ArgumentOutOfRangeException("pageSize", "Page size must be between 4KB and 256KB and a power of 2");
}
if (!BitMath.IsPowerOfTwo((uint)pageSize))
{
throw new ArgumentOutOfRangeException("pageSize", "Page size must be between 4KB and 256KB and a power of 2");
}
m_syncRoot = new object();
m_syncAllocate = new object();
PageSize = pageSize;
PageMask = PageSize - 1;
PageShiftBits = BitMath.CountBitsSet((uint)PageMask);
m_pageList = new MemoryPoolPageList(PageSize, maximumBufferSize);
m_requestCollectionEvent = new ThreadSafeList <WeakEventHandler <CollectionEventArgs> >();
SetTargetUtilizationLevel(utilizationLevel);
}
/// <summary>
/// Creates a new <see cref="MemoryPool"/>.
/// </summary>
/// <param name="pageSize">The desired page size. Must be between 4KB and 256KB</param>
/// <param name="maximumBufferSize">The desired maximum size of the allocation. Note: could be less if there is not enough system memory.</param>
/// <param name="utilizationLevel">Specifies the desired utilization level of the allocated space.</param>
public MemoryPool(int pageSize = 64 * 1024, long maximumBufferSize = -1, TargetUtilizationLevels utilizationLevel = TargetUtilizationLevels.Low)
{
if (pageSize < 4096 || pageSize > 256 * 1024)
throw new ArgumentOutOfRangeException("pageSize", "Page size must be between 4KB and 256KB and a power of 2");
if (!BitMath.IsPowerOfTwo((uint)pageSize))
throw new ArgumentOutOfRangeException("pageSize", "Page size must be between 4KB and 256KB and a power of 2");
m_syncRoot = new object();
m_syncAllocate = new object();
PageSize = pageSize;
PageMask = PageSize - 1;
PageShiftBits = BitMath.CountBitsSet((uint)PageMask);
m_pageList = new MemoryPoolPageList(PageSize, maximumBufferSize);
m_requestCollectionEvent = new ThreadSafeList<WeakEventHandler<CollectionEventArgs>>();
SetTargetUtilizationLevel(utilizationLevel);
}
