
Implement GetPerformanceInfo, GetProcessMemoryInfo on top of NtQueryInformationProcess and GetWsChanges, QueryWorkingSet{,Ex} on top of NtQueryVirtualMemory.
Implement GetPerformanceInfo, GetProcessMemoryInfo on top of NtQueryInformationProcess and GetWsChanges, QueryWorkingSet{,Ex} on top of NtQueryVirtualMemory.