The MEMORYSTATUS structure contains information about current memory availability. The GlobalMemoryStatus function uses this structure.

typedef struct _MEMORYSTATUS { // mst 
    DWORD dwLength;        // sizeof(MEMORYSTATUS)
    DWORD dwMemoryLoad;    // percent of memory in use
    DWORD dwTotalPhys;    // bytes of physical memory
    DWORD dwAvailPhys;    // free physical memory bytes
    DWORD dwTotalPageFile; // bytes of paging file
    DWORD dwAvailPageFile; // free bytes of paging file
    DWORD dwTotalVirtual;  // user bytes of address space
    DWORD dwAvailVirtual;  // free user bytes

} MEMORYSTATUS, *LPMEMORYSTATUS;


Members

dwLength

Indicates the size of the structure. The calling process should set this member prior to calling GlobalMemoryStatus.

dwMemoryLoad

Specifies a number between 0 and 100 that gives a general idea of current memory utilization, in which 0 indicates no memory use and 100 indicates full memory use.

dwTotalPhys

Indicates the total number of bytes of physical memory.

dwAvailPhys

Indicates the number of bytes of physical memory available.

dwTotalPageFile

Indicates the total number of bytes that can be stored in the paging file. Note that this number does not represent the actual physical size of the paging file on disk.

dwAvailPageFile

Indicates the number of bytes available in the paging file.

dwTotalVirtual

Indicates the total number of bytes that can be described in the user mode portion of the virtual address space of the calling process.

dwAvailVirtual

Indicates the number of bytes of unreserved and uncommitted memory in the user mode portion of the virtual address space of the calling process.