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2004-11-27 jrandom

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* Fix for a fast loop caused by a race in the new streaming library (thanks
      DrWoo, frontier, pwk_, and thetower!)
    * Minor updates to the SimpleTimer and Connection to help track down a
      high CPU usage problem (dumping debug info to stdout/wrapper.log if too
      many events/tasks fire in a second)
    * Minor fixes for races on client disconnects (causing NPEs)
This commit is contained in:
jrandom
2004-11-27 03:54:17 +00:00
committed by zzz
parent 64b5089909
commit 0b5a640896
7 changed files with 77 additions and 9 deletions
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30
core/java/src/net/i2p/util/SimpleTimer.java
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@@ -72,6 +72,10 @@ public class SimpleTimer {
_log.log(Log.CRIT, msg, t);
}
private long _occurredTime;
private long _occurredEventCount;
private TimedEvent _recentEvents[] = new TimedEvent[5];
private class SimpleTimerRunner implements Runnable {
public void run() {
List eventsToFire = new ArrayList(1);
@@ -121,6 +125,9 @@ public class SimpleTimer {
}
}
long now = System.currentTimeMillis();
now = now - (now % 1000);
for (int i = 0; i < eventsToFire.size(); i++) {
TimedEvent evt = (TimedEvent)eventsToFire.get(i);
try {
@@ -128,7 +135,30 @@ public class SimpleTimer {
} catch (Throwable t) {
log("wtf, event borked: " + evt, t);
}
_recentEvents[4] = _recentEvents[3];
_recentEvents[3] = _recentEvents[2];
_recentEvents[2] = _recentEvents[1];
_recentEvents[1] = _recentEvents[0];
_recentEvents[0] = evt;
}
if (_occurredTime == now) {
_occurredEventCount += eventsToFire.size();
} else {
_occurredTime = now;
if (_occurredEventCount > 100) {
StringBuffer buf = new StringBuffer(256);
buf.append("Too many simpleTimerJobs (").append(_occurredEventCount);
buf.append(") in a second! Last 5: \n");
for (int i = 0; i < _recentEvents.length; i++) {
if (_recentEvents[i] != null)
buf.append(_recentEvents[i]).append('\n');
}
_log.log(Log.CRIT, buf.toString());
}
_occurredEventCount = 0;
}
eventsToFire.clear();
}
}