maxDcb-C2Core/modules/PwSh/HostMalloc.hpp

#pragma once
#include <Windows.h>
#include <mscoree.h>
#include <metahost.h>

#include <vector>


typedef enum 
{
    MEM_ALLOC_LIST_HEAD,
    MEM_ALLOC_MALLOC,
    MEM_ALLOC_VIRTUALALLOC,
    MEM_ALLOC_MAPPED_FILE
} memAllocTracker;


typedef struct _MemAllocEntry 
{
    SLIST_ENTRY allocEntry;
    void* Address;
    SIZE_T size;
    memAllocTracker type;
} MemAllocEntry;


class MyHostMalloc : public IHostMalloc
{
public:
    MyHostMalloc(HANDLE hHeap, IHostMemoryManager* owner, CRITICAL_SECTION* allocListLock, std::vector<MemAllocEntry*>* allocList);
    ~MyHostMalloc(void);

    virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid,void  **ppv);
    virtual ULONG   STDMETHODCALLTYPE AddRef(void);
    virtual ULONG   STDMETHODCALLTYPE Release(void);

    virtual HRESULT STDMETHODCALLTYPE Alloc(SIZE_T cbSize, EMemoryCriticalLevel eCriticalLevel, void** ppMem);
    virtual HRESULT STDMETHODCALLTYPE DebugAlloc(SIZE_T cbSize, EMemoryCriticalLevel       eCriticalLevel, char* pszFileName, int         iLineNo, void** ppMem);
    virtual HRESULT STDMETHODCALLTYPE Free(void* pMem);

    const std::vector<MemAllocEntry*>& getMemAllocList()
    {
        return *m_memAllocList;
    }

protected:
    volatile LONG count;

private:
    HANDLE m_hHeap;
    IHostMemoryManager* m_owner;
    CRITICAL_SECTION* m_allocListLock;
    std::vector<MemAllocEntry*>* m_memAllocList;
};