ExDisableHandleTracing

VOID __stdcall ExDisableHandleTracing(_HANDLE_TABLE *HandleTable){
  _ETHREAD *CurrentThread; 
  unsigned __int64 p_HandleTableLock; 
  _HANDLE_TRACE_DEBUG_INFO *DebugInfo; 
  _ETHREAD *v5; 
  unsigned int SessionId; 
  unsigned __int8 v7; 
  int v8; 
  _KLOCK_ENTRY *v9; 
  bool v10; 
  __int64 v11; 
  __int64 v12; 
  UINT64 a3; 

  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  --CurrentThread->Tcb.KernelApcDisable;
  p_HandleTableLock = (unsigned __int64)&HandleTable->HandleTableLock;
  ExAcquirePushLockExclusiveEx(&HandleTable->HandleTableLock, 0i64);
  DebugInfo = HandleTable->DebugInfo;
  HandleTable->DebugInfo = 0i64;
  if( DebugInfo && (DebugInfo->BitMaskFlags & 8) == 0 )
    LOBYTE(HandleTable->Flags) &= ~2u;
  if( (_InterlockedExchangeAdd64((volatile signed __int64 *)p_HandleTableLock, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
    ExfTryToWakePushLock((_EX_PUSH_LOCK *)p_HandleTableLock);
  LODWORD(a3) = 0;
  v5 = (_ETHREAD *)KeGetCurrentThread();
  if( MiGetSystemRegionType(p_HandleTableLock) == 1 )
    SessionId = MmGetSessionIdEx(v5->Tcb.ApcState.Process);
  else
    SessionId = -1;
  --v5->Tcb.SpecialApcDisable;
  v7 = ++v5->Tcb.AbAllocationRegionCount;
  v8 = ((char)v5->Tcb.AbEntrySummary | (char)v5->Tcb.AbOrphanedEntrySummary) ^ 0x3F;
  while( 1 )
  {
    v10 = !_BitScanReverse((unsigned int *)&v11, v8);
    if( v10 )
      goto LABEL_16;
    v9 = &v5->Tcb.LockEntries[v11];
    v8 &= ~(1 << v11);
    if( (v9->AcquiredByte & 1) != 0
      && (v9->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 1) == 0
      && (v9->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 0x7FFFFFFFFFFFFFFCi64) == (p_HandleTableLock & 0x7FFFFFFFFFFFFFFCi64)
      && v9->LockState.SessionId == SessionId )
    {
      v9->AcquiredByte &= ~1u;
      if( v9->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 )
        break;
    }
  }
  if( !v9 )
  {
LABEL_16:
    if( (*(&v5->Tcb.MiscFlags + 1) & 0x10000) == 0 )
      KeBugCheckEx(0x162u, v5, (PVOID)p_HandleTableLock, (PVOID)SessionId, 0i64);
    goto LABEL_23;
  }
  v9->CrossThreadReleasableAndBusyByte |= 2u;
  if( v9->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 < 0 )
    KiAbEntryRemoveFromTree(v9);
  LODWORD(a3) = v9->BoostBitmap.AllFields & 0x1FFFF;
  v9->BoostBitmap.AllFields &= 0xFFFE0000;
  v9->ThreadLocalFlags &= ~1u;
  v9->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 = 0i64;
  v12 = v9 - v5->Tcb.LockEntries;
  if( v7 == 1 )
    v5->Tcb.AbEntrySummary |= 1 << v12;
  else
    _InterlockedOr8((volatile signed __int8 *)&v5->Tcb.AbOrphanedEntrySummary, 1 << v12);
LABEL_23:
  --v5->Tcb.AbAllocationRegionCount;
  KiAbThreadRemoveBoosts(&v5->Tcb, (VOID *)p_HandleTableLock, &a3);
  v10 = v5->Tcb.SpecialApcDisable++ == -1;
  if( v10 && ($F25F8C4BA33AF922A5F1AF68CD89DDDF *)v5->Tcb.ApcState.ApcListHead[0].Flink != &v5->Tcb.152 )
    KiCheckForKernelApcDelivery();
  KeLeaveCriticalRegionThread(&CurrentThread->Tcb);
  if( DebugInfo )
    ExDereferenceHandleDebugInfo(HandleTable, DebugInfo);
}

Referenced by: