_SYSTEM_MEMORY_USAGE_INFORMATION

struct __declspec(align(8)) _SYSTEM_MEMORY_USAGE_INFORMATION
{
  __int64 NumberOfPhysicalBytes;
  __int64 AvailableBytes;
  __int64 ResidentAvailableBytes;
  __int64 TotalCommittedBytes;
  __int64 SharedCommitBytes;
  __int64 TotalCommitLimitBytes;
  __int64 PeakCommitmentBytes;
};