GetProcessWorkingSetSize

Overview

Group

Quick Info

Windows NT
Yes
Win95
No
Win32s
No
Import Library
kernel32.lib
Header File
winbase.h
Unicode
No
Platform Notes
None

The GetProcessWorkingSetSize function obtains the minimum and maximum working set sizes of a specified process.

The "working set" of a process is the set of memory pages currently visible to the process in physical RAM memory. These pages are resident and available for an application to use without triggering a page fault. The size of a process' working set is specified in bytes. The minimum and maximum working set sizes affect the virtual memory paging behavior of a process.

BOOL GetProcessWorkingSetSize(

HANDLE hProcess,	// open handle to the process of interest
LPDWORD lpMinimumWorkingSetSize,	// points to variable to receive minimum working set size
LPDWORD lpMaximumWorkingSetSize	// points to variable to receive maximum working set size
);

Parameters
hProcess

An open handle to the process whose working set sizes will be obtained. The handle must have PROCESS_QUERY_INFORMATION access rights. For more information, see Process Objects.

lpMinimumWorkingSetSize

Points to a variable that receives the minimum working set size of the specified process. The virtual memory manager attempts to keep at least this much memory resident in the process whenever the process is active.

lpMaximumWorkingSetSize

Points to a variable that receives the maximum working set size of the specified process. The virtual memory manager attempts to keep no more than this much memory resident in the process whenever the process is active when memory is in short supply.

Return Values
If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.