I noticed strange deadlocks in JForex this week - typically this occurs when I switch time interval of the chart (e.g. 1h -> 5min), some time - right after focusing to another chart window. During 'deadlock' UI is completely unresponsive and task manager shows CPU usage of 13% (this is approximately 1/8th of my 8 core i7 CPU) - these are the symptoms of endless cycle somewhere in UI thread.

The only way to handle the problem - kill JForex process from task manager (on Windows). The last time I was waiting for 10 minutes or so before killing the process - this definitely looks like deadlock, not like some lengthy lag.

After some experiments I noticed that problem is most probably caused by Profit/Loss indicator. Below are the experiments I've done to diagnose the problem:
- 4 restarts ended with the same deadlock - after switching 1h -> 5min, strange thing - switching from 1h to some other intervals causes freezes (few seconds), but UI finally restores
- after removing P/L indicator from chart - no deadlock upon switching between any intervals and switching is performed noticeably faster
- i tried re-adding P/L indicator - UI deadlocked immediatelly

Please fix P/L indicator.

I could not repeat the problem.

Please attach your workspace to help in replicating the problem.

Right now I do not have a workspace which reproduces hanging JForex and i do not have a "stable way" to create it

Though I believe that root of the problem is somewhere in the code evaluating the P/L indicator. May we start with the P/L problem described here?
https://www.dukascopy.com/swiss/english ... 618#p91618

I just reproduced it once again on freshly created demo account:
Login DEMO2PTfTG
Password PTfTG

Attached is the workspace i see on screen and screenshot where P/L indicator is present, but is not rendered.

We will take care of this problem.

One more thing regarding P/L indicator - it seems it fails to initialize properly when added programmatically from plugin into already existing sub-panel with VOLUME indicator, i receive such message

23:02:31 Error in indicator: java.lang.NullPointerException @ com.dukascopy.indicators.ProfitLossIndicator.calculate(ProfitLossIndicator.java:184)

Here is my code

            IIndicator indicator = context.getIndicators().getIndicator("P/L");

            List<IIndicatorPanel> panels = chart.getIndicatorPanels();
            if( panels.isEmpty())
                chart.add(indicator,
                        null, new Color[] {Color.RED}, new DrawingStyle[] {DrawingStyle.LINE}, new int[] {2});
            else
                panels.get(0).add(indicator,
                        null, new Color[] {Color.RED}, new DrawingStyle[] {DrawingStyle.LINE}, new int[] {2});