ExAcquireResourceExclusiveLite

UINT8 __stdcall ExAcquireResourceExclusiveLite(ERESOURCE *Resource, UINT8 Wait){
  unsigned __int8 v4; 
  __int16 v5; 
  _ETHREAD *v6; 
  INT64 v7; 
  CHAR v8; 
  unsigned int v9; 
  unsigned __int8 CurrentIrql; 
  _ETHREAD *CurrentThread; 
  struct _KLOCK_QUEUE_HANDLE LockHandle; 
  INT64 Object[2]; 
  __int128 v15; 
  __int128 v16; 
  v4 = (Wait == 0) + 1;
  if( (Resource->Flag & 0x41) == 1 )
    KeBugCheckEx(0x1C6u, 0xFui64, (ULONG_PTR)Resource, 0i64, 0i64);
  v5 = Resource->Flag & 1;
  if( v5 )
  {
    CurrentIrql = KeGetCurrentIrql();
    CurrentThread = (_ETHREAD *)KeGetCurrentThread();
    if( CurrentIrql > v4 )
      KeBugCheckEx(0x1C6u, 0i64, CurrentIrql, v4, 0i64);
    if( CurrentIrql >= 2u && (*((_DWORD *)KeGetPcr() + 3243) & 0x10001) != 0 )
      KeBugCheckEx(0x1C6u, 5ui64, 0i64, 0i64, 0i64);
    if( (*((_BYTE *)CurrentThread + 192) & 2) != 0 )
      KeBugCheckEx(0x1C6u, 6ui64, 0i64, 0i64, 0i64);
    if( !CurrentIrql && (*((_DWORD *)CurrentThread + 29) & 0x400) == 0 && !*((_DWORD *)CurrentThread + 121) )
      KeBugCheckEx(0x1C6u, 7ui64, 0i64, 0i64, 0i64);
  }
  if( !v5 )
  {
    memset(&LockHandle, 0, sizeof(LockHandle));
    *(_OWORD *)Object = 0i64;
    v15 = 0i64;
    v16 = 0i64;
    v6 = (_ETHREAD *)KeGetCurrentThread();
    __incgsdword(0x8678u);
    KeAcquireInStackQueuedSpinLock(&Resource->SpinLock, &LockHandle);
    v8 = ExpTryAcquireResourceExclusive((INT64)Resource);
    if( v8 )
    {
      v9 = Resource->OwnerEntry.TableSize & 7;
      Resource->OwnerEntry.OwnerThread = (unsigned __int64)v6;
      Resource->OwnerEntry.TableSize = v9 | 8;
      KeReleaseInStackQueuedSpinLockFromDpcLevel(&LockHandle);
      __writecr8(LockHandle.OldIrql);
      __incgsdword(0x867Cu);
      __incgsdword(0x8664u);
    }
    else
    {
      if( (Resource->ReservedLowFlags & 0x80u) != 0 && (_ETHREAD *)Resource->OwnerEntry.OwnerThread == v6 )
      {
        Resource->OwnerEntry.TableSize += 8;
        KeReleaseInStackQueuedSpinLockFromDpcLevel(&LockHandle);
        __writecr8(LockHandle.OldIrql);
        __incgsdword(0x8680u);
        __incgsdword(0x8664u);
      }
      else
      {
        if( !Wait )
        {
          KeReleaseInStackQueuedSpinLockFromDpcLevel(&LockHandle);
          __writecr8(LockHandle.OldIrql);
          __incgsdword(0x8688u);
          return 0;
        }
        ExpPrepareToWaitForResourceExclusive(v7, (INT64)v6, (INT64)Object);
        KeReleaseInStackQueuedSpinLockFromDpcLevel(&LockHandle);
        __writecr8(LockHandle.OldIrql);
        __incgsdword(0x8684u);
        ExpApplyPrewaitBoost();
        ExpWaitForResource(Resource, Object);
        ExpBoostIoAfterAcquire(Resource, (UINT64)v6);
        __incgsdword(0x867Cu);
        __incgsdword(0x8664u);
      }
      return 1;
    }
    return v8;
  }
  return ExpFastResourceLegacyAcquireExclusive(Resource);
}

Referenced by: