Removes as many pages as possible from the working set of the specified process.

Syntax

BOOL WINAPI EmptyWorkingSet(
  __in  HANDLE hProcess
);

Parameters

hProcess [in]

A handle to the process. The handle must have the PROCESS_QUERY_INFORMATION or PROCESS_QUERY_LIMITED_INFORMATION access right and the PROCESS_SET_QUOTA access right. For more information, see Process Security and Access Rights.

Return Value

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.

Remarks

You can also empty the working set by calling the SetProcessWorkingSetSize or SetProcessWorkingSetSizeEx function with the dwMinimumWorkingSetSize and dwMaximumWorkingSetSize parameters set to the value (SIZE_T)–1.

Starting with PSAPI version 2 for Windows 7 and Windows Server 2008 R2, this function is defined as K32EmptyWorkingSet in Psapi.h and exported in Kernel32.lib and Kernel32.dll. However, you should always call this function as EmptyWorkingSet. To ensure correct resolution of symbols for programs that will run on earlier versions of Windows, add Psapi.lib to the TARGETLIBS macro and compile the program with –DPSAPI_VERSION=1.

Requirements

See Also

EnumProcesses

PSAPI Functions

SetProcessWorkingSetSize

Working Set

Working Set Information

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Build date: 7/2/2009