typedef struct _ETW_PERF_COUNTERS
{
    long TotalActiveSessions;
    long TotalBufferMemoryNonPagedPool;
    long TotalBufferMemoryPagedPool;
    long TotalGuidsEnabled;
    long TotalGuidsNotEnabled;
    long TotalGuidsPreEnabled;
} ETW_PERF_COUNTERS, *PETW_PERF_COUNTERS;