Graphs: prevent NaNs if we are skewed ahead of system time

2015-05-27 21:05:44 +00:00
parent fba0372339
commit 7ab85a0a20
3 changed files with 13 additions and 2 deletions
--- a/apps/routerconsole/java/src/net/i2p/router/web/SummaryRenderer.java
+++ b/apps/routerconsole/java/src/net/i2p/router/web/SummaryRenderer.java
@ -109,7 +109,8 @@ class SummaryRenderer {
    public void render(OutputStream out, int width, int height, boolean hideLegend, boolean hideGrid,
                       boolean hideTitle, boolean showEvents, int periodCount,
                       int endp, boolean showCredit, SummaryListener lsnr2, String titleOverride) throws IOException {
-        long end = _listener.now() - 75*1000;
+        // prevent NaNs if we are skewed ahead of system time
+        long end = Math.min(_listener.now(), System.currentTimeMillis()) - 75*1000;
        long period = _listener.getRate().getPeriod();
        if (endp > 0)
            end -= period * endp;