EtwpAcquireLoggerContextByLoggerId

_WMI_LOGGER_CONTEXT *__stdcall EtwpAcquireLoggerContextByLoggerId(
        _ETW_SILODRIVERSTATE *SiloState,
        UINT64 LoggerId,
        UINT8 WithMutex){
  __int64 v4; 
  __int64 v6; 
  _WMI_LOGGER_CONTEXT *v7; 
  _WMI_LOGGER_CONTEXT *v8; 
  v4 = (unsigned int)LoggerId;
  v6 = (unsigned int)LoggerId;
  if( (unsigned int)LoggerId >= SiloState->MaxLoggers )
    LOBYTE(v7) = 1;
  else
    v7 = SiloState->EtwpLoggerContext[(unsigned int)LoggerId];
  if( ((unsigned __int8)v7 & 1) != 0
    || !ExAcquireRundownProtectionCacheAwareEx(SiloState->EtwpLoggerRundown[(unsigned int)LoggerId], 1u) )
  {
    return 0i64;
  }
  if( (unsigned int)v4 >= SiloState->MaxLoggers )
  {
    v8 = (_WMI_LOGGER_CONTEXT *)1;
  }
  else
  {
    _mm_lfence();
    v8 = SiloState->EtwpLoggerContext[v4];
  }
  if( ((unsigned __int8)v8 & 1) != 0 )
  {
    ExReleaseRundownProtectionCacheAwareEx(SiloState->EtwpLoggerRundown[v6], 1u);
    return 0i64;
  }
  if( WithMutex )
    KeWaitForSingleObject((char *)v8 + 648, Executive, 0, 0, 0i64);
  if( !*((_DWORD *)v8 + 84) )
  {
    EtwpReleaseLoggerContext((unsigned int *)v8, WithMutex);
    return 0i64;
  }
  return v8;
}

Referenced by: