The VirtualQuery function provides information about a range of pages in the virtual address space of the calling process.
DWORD VirtualQuery(
LPCVOID lpAddress, |
// address of region |
PMEMORY_BASIC_INFORMATION lpBuffer, |
// address of information buffer |
DWORD dwLength |
// size of buffer |
); |
The return value is the actual number of bytes returned in the information buffer.
VirtualQuery provides information about a region of consecutive pages beginning at a specified address that share the following attributes:
The function determines the attributes of the first page in the region and then scans subsequent pages until it scans the entire range of pages or until it encounters a page with a nonmatching set of attributes. The function returns the attributes and the size, in bytes, of the region of pages with matching attributes. For example, if there is a 40 megabyte (MB) region of free memory, and VirtualQuery is called on a page that is 10 MB into the region, the function will obtain a state of MEM_FREE and a size of 30 MB.
This function reports on a region of pages in the memory of the calling process, and the VirtualQueryEx function reports on a region of pages in the memory of a specified process.
GetSystemInfo, MEMORY_BASIC_INFORMATION, VirtualQueryEx
file: /Techref/os/win/api/win32/func/src/f90_15.htm, 4KB, , updated: 2000/4/7 12:19, local time: 2024/8/23 08:50,
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