B# .NET Blog

I just launched my VPC with the beta 2 bits of the .NET Framework v2.0 (it's currently not on my primary OS installation as that one is currently under high other-beta-pressure, but things will change soon when I receive a new harddisk which I'll partition in a few OS install partitions, including one for Vista beta 1) and did check the mscoree.idl file for the changes to the IHostMemoryManager I told you about in the previous part 3 post of my CLR Hosting series. Here are the renewed interfaces:

[
    uuid(7BC698D1-F9E3-4460-9CDE-D04248E9FA24),
    version(1.0),
    helpstring("Host memory manager"),
    pointer_default(unique),
    local
]
interface IHostMemoryManager_DeleteMe : IUnknown //[BDS] Note: this is the interface I've shown you previously
{
    HRESULT CreateMalloc([in] BOOL fThreadSafe,
                         [out] IHostMalloc **ppMalloc);

    HRESULT VirtualAlloc([in] void*       pAddress,
                         [in] SIZE_T      dwSize,
                         [in] DWORD       flAllocationType,
                         [in] DWORD       flProtect,
                         [in] EMemoryCriticalLevel eCriticalLevel,
                         [out] void**     ppMem);

    HRESULT VirtualFree([in] LPVOID      lpAddress,
                        [in] SIZE_T      dwSize,
                        [in] DWORD       dwFreeType);

    HRESULT VirtualQuery([in] void *     lpAddress,
                         [out] void*     lpBuffer,
                         [in] SIZE_T     dwLength,
                         [out] SIZE_T *  pResult);

    HRESULT VirtualProtect([in] void *       lpAddress,
                           [in] SIZE_T       dwSize,
                           [in] DWORD        flNewProtect,
                           [out] DWORD *     pflOldProtect);

    HRESULT GetMemoryLoad([out] DWORD* pMemoryLoad,
                          [out] SIZE_T *pAvailableBytes);

    HRESULT RegisterMemoryNotificationCallback([in] ICLRMemoryNotificationCallback * pCallback);
}

typedef enum
{
    MALLOC_THREADSAFE = 0x1,
    MALLOC_EXECUTABLE = 0x2,
} MALLOC_TYPE;

[
    uuid(7BC698D1-F9E3-4460-9CDE-D04248E9FA25),
    version(1.0),
    helpstring("Host memory manager"),
    pointer_default(unique),
    local
]
interface IHostMemoryManager : IUnknown //[BDS] Note: this is the renewed interface
{
    HRESULT CreateMalloc([in] DWORD dwMallocType, //[BDS] Note: change I mentioned previously too
                         [out] IHostMalloc **ppMalloc);

    HRESULT VirtualAlloc([in] void*       pAddress,
                         [in] SIZE_T      dwSize,
                         [in] DWORD       flAllocationType,
                         [in] DWORD       flProtect,
                         [in] EMemoryCriticalLevel eCriticalLevel,
                         [out] void**     ppMem);

    HRESULT VirtualFree([in] LPVOID      lpAddress,
                        [in] SIZE_T      dwSize,
                        [in] DWORD       dwFreeType);

    HRESULT VirtualQuery([in] void *     lpAddress,
                         [out] void*     lpBuffer,
                         [in] SIZE_T     dwLength,
                         [out] SIZE_T *  pResult);

    HRESULT VirtualProtect([in] void *       lpAddress,
                           [in] SIZE_T       dwSize,
                           [in] DWORD        flNewProtect,
                           [out] DWORD *     pflOldProtect);

    HRESULT GetMemoryLoad([out] DWORD* pMemoryLoad,
                          [out] SIZE_T *pAvailableBytes);

    HRESULT RegisterMemoryNotificationCallback([in] ICLRMemoryNotificationCallback * pCallback);

    HRESULT NeedsVirtualAddressSpace(
        [in] LPVOID startAddress,
        [in] SIZE_T size
        );

    HRESULT AcquiredVirtualAddressSpace(
        [in] LPVOID startAddress,
        [in] SIZE_T size
        );

    HRESULT ReleasedVirtualAddressSpace(
        [in] LPVOID startAddress
        );
}

As you can expect, the first one (suffixed with _DeleteMe) will be removed later on, as mentioned somewhere else in the IDL too:

//!!! Delete this one only after SQL integrates Whidbey beta2 bits.
// IID IHostMemoryManager_DeleteMe : uuid(7BC698D1-F9E3-4460-9CDE-D04248E9FA24)
cpp_quote("EXTERN_GUID(IID_IHostMemoryManager_DeleteMe, 0x7BC698D1, 0xF9E3, 0x4460, 0x9C, 0xDE, 0xD0, 0x42, 0x48, 0xE9, 0xFA, 0x24);")

Developer's notes everywhere, that's why I like beta software :-). You can even find places with DeleteMe2 suffixes for the moment :o. It also shows the versioning hell of pre-.NET stuff.