ExCreateHeap

__int64 __fastcall ExCreateHeap(__int64 a1, INT64 a2, _QWORD *a3){
  __int64 v4; 
  __int64 v5; 
  __int64 result; 

  RtlpHpHeapCreate((unsigned int)a2, a2, (CHAR)a3);
  v5 = v4;
  result = 0i64;
  if( !v5 )
    return 3221225495i64;
  *a3 = v5;
  return result;
}

Referenced by:

ExInitializePagedHeaps
ExInitializePoolHeapManagement
ExInitializeSessionHeapManager