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2006-07-27 jrandom

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* Cut down NTCP connection establishments once we know the peer is skewed
      (rather than wait for full establishment before verifying)
    * Removed a lock on the stats framework when accessing rates, which
      shouldn't be a problem, assuming rates are created (pretty much) all at
      once and merely updated during the lifetime of the jvm.
This commit is contained in:
jrandom
2006-07-27 23:40:00 +00:00
committed by zzz
parent 54bc5485ec
commit 6577ae499f
8 changed files with 61 additions and 21 deletions
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14
core/java/src/net/i2p/stat/StatManager.java
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@ -43,7 +43,7 @@ public class StatManager {
_log = context.logManager().getLog(StatManager.class);
_context = context;
_frequencyStats = Collections.synchronizedMap(new HashMap(128));
_rateStats = Collections.synchronizedMap(new HashMap(128));
_rateStats = new HashMap(128); // synchronized only on add //Collections.synchronizedMap(new HashMap(128));
_statLog = new BufferedStatLog(context);
}
@ -80,10 +80,12 @@ public class StatManager {
* @param periods array of period lengths (in milliseconds)
*/
public void createRateStat(String name, String description, String group, long periods[]) {
if (_rateStats.containsKey(name)) return;
RateStat rs = new RateStat(name, description, group, periods);
if (_statLog != null) rs.setStatLog(_statLog);
_rateStats.put(name, rs);
synchronized (_rateStats) {
if (_rateStats.containsKey(name)) return;
RateStat rs = new RateStat(name, description, group, periods);
if (_statLog != null) rs.setStatLog(_statLog);
_rateStats.put(name, rs);
}
}
/** update the given frequency statistic, taking note that an event occurred (and recalculating all frequencies) */
@ -94,7 +96,7 @@ public class StatManager {
/** update the given rate statistic, taking note that the given data point was received (and recalculating all rates) */
public void addRateData(String name, long data, long eventDuration) {
RateStat stat = (RateStat) _rateStats.get(name);
RateStat stat = (RateStat) _rateStats.get(name); // unsynchronized
if (stat != null) stat.addData(data, eventDuration);
}