MEMORY_WORKING_SET_EX_BLOCK - NtDoc

#ifndef _NTMMAPI_H

/**
 * The MEMORY_WORKING_SET_EX_BLOCK structure contains extended working set information for a page.
 *
 * @ref https://learn.microsoft.com/en-us/windows/win32/api/psapi/ns-psapi-psapi_working_set_ex_block
 */
typedef union _MEMORY_WORKING_SET_EX_BLOCK
{
    ULONG_PTR Flags;
    union
    {
        struct
        {
            ULONG_PTR Valid : 1;                    // If this bit is 1, the subsequent members are valid; otherwise they should be ignored.
            ULONG_PTR ShareCount : 3;               // The number of processes that share this page. The maximum value of this member is 7.
            ULONG_PTR Win32Protection : 11;         // The memory protection attributes of the page.
            ULONG_PTR Shared : 1;                   // If this bit is 1, the page can be shared.
            ULONG_PTR Node : 6;                     // The NUMA node. The maximum value of this member is 63.
            ULONG_PTR Locked : 1;                   // If this bit is 1, the virtual page is locked in physical memory.
            ULONG_PTR LargePage : 1;                // If this bit is 1, the page is a large page.
            ULONG_PTR Priority : 3;                 // The memory priority attributes of the page.
            ULONG_PTR Reserved : 3;
            ULONG_PTR SharedOriginal : 1;           // If this bit is 1, the page was not modified.
            ULONG_PTR Bad : 1;                      // If this bit is 1, the page is has been reported as bad.
#ifdef _WIN64
            ULONG_PTR Win32GraphicsProtection : 4;  // The memory protection attributes of the page. // since 19H1
            ULONG_PTR ReservedUlong : 28;
#endif
        };
        struct
        {
            ULONG_PTR Valid : 1;                    // If this bit is 0, the subsequent members are valid; otherwise they should be ignored.
            ULONG_PTR Reserved0 : 14;
            ULONG_PTR Shared : 1;                   // If this bit is 1, the page can be shared.
            ULONG_PTR Reserved1 : 5;
            ULONG_PTR PageTable : 1;
            ULONG_PTR Location : 2;                 // The memory location of the page.  MEMORY_WORKING_SET_EX_LOCATION
            ULONG_PTR Priority : 3;                 // The memory priority of the page.
            ULONG_PTR ModifiedList : 1;
            ULONG_PTR Reserved2 : 2;
            ULONG_PTR SharedOriginal : 1;           // If this bit is 1, the page was not modified.
            ULONG_PTR Bad : 1;                      // If this bit is 1, the page is has been reported as bad.
#ifdef _WIN64
            ULONG_PTR ReservedUlong : 32;
#endif
        } Invalid;
    };
} MEMORY_WORKING_SET_EX_BLOCK, *PMEMORY_WORKING_SET_EX_BLOCK;

#endif
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