PfLockExclusiveRelease

VOID __stdcall PfLockExclusiveRelease(_EX_PUSH_LOCK *Lock){
  _ETHREAD *CurrentThread; 
  unsigned int SessionId; 
  unsigned __int8 v4; 
  int v5; 
  bool v6; 
  __int64 v7; 
  _KLOCK_ENTRY *v8; 
  __int64 v9; 
  UINT64 a3; 

  if( (_InterlockedExchangeAdd64(&Lock->_bf_0, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
    ExfTryToWakePushLock(Lock);
  LODWORD(a3) = 0;
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  if( MiGetSystemRegionType((UINT64)Lock) == 1 )
    SessionId = MmGetSessionIdEx(CurrentThread->Tcb.ApcState.Process);
  else
    SessionId = -1;
  --CurrentThread->Tcb.SpecialApcDisable;
  v4 = ++CurrentThread->Tcb.AbAllocationRegionCount;
  v5 = ((char)CurrentThread->Tcb.AbEntrySummary | (char)CurrentThread->Tcb.AbOrphanedEntrySummary) ^ 0x3F;
  while( 1 )
  {
    v6 = !_BitScanReverse((unsigned int *)&v7, v5);
    if( v6 )
      break;
    v8 = &CurrentThread->Tcb.LockEntries[v7];
    v5 &= ~(1 << v7);
    if( (v8->AcquiredByte & 1) != 0
      && (v8->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 1) == 0
      && (v8->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 0x7FFFFFFFFFFFFFFCi64) == ((unsigned __int64)Lock & 0x7FFFFFFFFFFFFFFCi64)
      && v8->LockState.SessionId == SessionId )
    {
      v8->AcquiredByte &= ~1u;
      if( v8->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 )
      {
        if( v8 )
        {
          v8->CrossThreadReleasableAndBusyByte |= 2u;
          if( v8->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 < 0 )
            KiAbEntryRemoveFromTree(v8);
          LODWORD(a3) = v8->BoostBitmap.AllFields & 0x1FFFF;
          v8->BoostBitmap.AllFields &= 0xFFFE0000;
          v8->ThreadLocalFlags &= ~1u;
          v8->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 = 0i64;
          v9 = v8 - CurrentThread->Tcb.LockEntries;
          if( v4 == 1 )
            CurrentThread->Tcb.AbEntrySummary |= 1 << v9;
          else
            _InterlockedOr8((volatile signed __int8 *)&CurrentThread->Tcb.AbOrphanedEntrySummary, 1 << v9);
          goto LABEL_17;
        }
        break;
      }
    }
  }
  if( (*(&CurrentThread->Tcb.MiscFlags + 1) & 0x10000) == 0 )
    KeBugCheckEx(0x162u, CurrentThread, Lock, (PVOID)SessionId, 0i64);
LABEL_17:
  --CurrentThread->Tcb.AbAllocationRegionCount;
  KiAbThreadRemoveBoosts(&CurrentThread->Tcb, Lock, &a3);
  v6 = CurrentThread->Tcb.SpecialApcDisable++ == -1;
  if( v6
    && ($F25F8C4BA33AF922A5F1AF68CD89DDDF *)CurrentThread->Tcb.ApcState.ApcListHead[0].Flink != &CurrentThread->Tcb.152 )
  {
    KiCheckForKernelApcDelivery();
  }
  KeLeaveCriticalRegion();
}

Referenced by: