75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <windows.h>
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#include "psapi.h"
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BOOL
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WINAPI
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EmptyWorkingSet(
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HANDLE hProcess
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)
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{
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NTSTATUS Status;
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QUOTA_LIMITS QuotaLimits;
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SYSTEM_INFO SystemInfo;
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GetSystemInfo(&SystemInfo);
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Status = NtQueryInformationProcess(hProcess,
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ProcessQuotaLimits,
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&QuotaLimits,
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sizeof(QuotaLimits),
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NULL);
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if ( !NT_SUCCESS(Status) ) {
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SetLastError( RtlNtStatusToDosError( Status ) );
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return(FALSE);
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}
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// The following signals a desire to empty the working set
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QuotaLimits.MinimumWorkingSetSize = (SIZE_T)-1;
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QuotaLimits.MaximumWorkingSetSize = (SIZE_T)-1;
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Status = NtSetInformationProcess(hProcess,
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ProcessQuotaLimits,
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&QuotaLimits,
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sizeof(QuotaLimits));
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if ( !NT_SUCCESS(Status) && Status != STATUS_PRIVILEGE_NOT_HELD ) {
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SetLastError( RtlNtStatusToDosError( Status ) );
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return(FALSE);
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}
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return(TRUE);
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}
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BOOL
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WINAPI
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QueryWorkingSet(
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HANDLE hProcess,
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PVOID pv,
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DWORD cb
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)
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{
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NTSTATUS Status;
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Status = NtQueryVirtualMemory(hProcess,
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NULL,
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MemoryWorkingSetInformation,
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pv,
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cb,
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NULL);
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if ( !NT_SUCCESS(Status) ) {
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SetLastError( RtlNtStatusToDosError( Status ) );
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return(FALSE);
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}
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return(TRUE);
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}
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