function rebalance(TradeKind kind) external nonReentrant {
  // DoS prevention:
114:  // unless caller is self, require that the next auction is not in same block
  require(
    _msgSender() == address(this) || tradeEnd[kind] < block.timestamp,
    "already rebalancing"
  );
uint48 public constant MAX_AUCTION_LENGTH = 60 * 60 * 24 * 7; // {s} max valid duration, 1 week
uint48 public constant MIN_WARMUP_PERIOD = 60; // {s} 1 minute
function rebalance(TradeKind kind) external nonReentrant {
155:    if (doTrade) {

165:	    ITrade trade = tryTrade(kind, req, prices);
166:	    tradeEnd[kind] = trade.endTime(); // {s}

168:	}
}
function status() public view returns (CollateralStatus status_) {
	uint256 size = basket.erc20s.length;
  if (disabled || size == 0) return CollateralStatus.DISABLED;
  
  for (uint256 i = 0; i < size; ++i) {
    CollateralStatus s = assetRegistry.toColl(basket.erc20s[i]).status();
323:    if (s.worseThan(status_)) {
324:      if (s == CollateralStatus.DISABLED) return CollateralStatus.DISABLED;
325:      status_ = s;
    }
  }
}
function settleTrade(IERC20 sell) public override(ITrading, TradingP1) returns (ITrade trade) {
  delete tokensOut[sell];
  trade = super.settleTrade(sell); // nonReentrant

  if (_msgSender() == address(trade)) {    
92:    try this.rebalance(trade.KIND()) {} catch (bytes memory errData) {
    }
  }
}
function rebalance(TradeKind kind) external nonReentrant {
  requireNotTradingPausedOrFrozen();
  assetRegistry.refresh();

  require(
116:    _msgSender() == address(this) || tradeEnd[kind] < block.timestamp,
    "already rebalancing"
  );

  require(tradesOpen == 0, "trade open");
  
121:  require(basketHandler.isReady(), "basket not ready");
  
  require(block.timestamp >= basketHandler.timestamp() + tradingDelay, "trading delayed");
}
    function settleTrade(IERC20 sell) public override(ITrading, TradingP1) returns (ITrade trade) {
        delete tokensOut[sell];
        trade = super.settleTrade(sell); // nonReentrant

        if (_msgSender() == address(trade)) {
          try this.rebalance(trade.KIND()) {} catch (bytes memory errData) {
            if (errData.length == 0) revert(); // solhint-disable-line reason-string
          }

    +			tradeEnd[kind] = uint48(block.timestamp);

        }
      }
    }
