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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
//
// File: HotHeapsDirectoryIterator.h
//
//
// Class code:MetaData::HotHeapsDirectoryIterator represents an iterator through hot heaps directory
// (code:HotHeapsDirectory).
//
// ======================================================================================
#pragma once
#include "external.h"
#include "heapindex.h"
#include "hotheap.h"
namespace MetaData
{
// --------------------------------------------------------------------------------------
//
// This class represents an iterator through hot heaps directory (code:HotHeapsDirectory), i.e. through an
// array of code:HotHeapsDirectoryEntry.
//
class HotHeapsDirectoryIterator
{
private:
//
// Private data
//
// Remaining data from the heaps directory. On each iteration this will be shrinked (the
// code:HotHeapsDirectoryEntry will be skipped).
DataBuffer m_RemainingHeapsDirectoryData;
// Data for the hot heaps. It has to end exactly where heaps directory starts.
DataBuffer m_HotHeapsData;
private:
//
// Operations with restricted access
//
// code:HotMetaData is the only class allowed to create this iteration.
friend class HotMetaData;
// Initialize iteration on heaps directory (hotHeapsDirectoryData) with heap hot data (hotHeapsData).
// The caller guarantees that the heap hot data end where heaps directory beggins.
void Initialize(
DataBuffer hotHeapsDirectoryData,
DataBuffer hotHeapsData);
public:
//
// Operations
//
// Creates empty iterator.
HotHeapsDirectoryIterator();
// S_OK, S_FALSE, error code (clears the HotHeap if not S_OK)
__checkReturn
HRESULT GetNext(
HotHeap *pHotHeap,
HeapIndex *pHotHeapIndex);
}; // class HotHeapsDirectoryIterator
}; // namespace MetaData
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