Mercurial > hg > blitz_stable
diff src/org/dancres/blitz/SearchTasks.java @ 0:3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 21 Mar 2009 11:00:06 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/org/dancres/blitz/SearchTasks.java Sat Mar 21 11:00:06 2009 +0000 @@ -0,0 +1,87 @@ +package org.dancres.blitz; + +import org.dancres.blitz.stats.BlockingOpsStat; +import org.dancres.blitz.stats.MissedOpsStat; +import org.dancres.blitz.stats.Stat; +import org.dancres.blitz.stats.StatGenerator; +import org.dancres.blitz.stats.StatsBoard; + +import edu.emory.mathcs.backport.java.util.concurrent.atomic.AtomicInteger; +import edu.emory.mathcs.backport.java.util.concurrent.atomic.AtomicLong; + +/** + * Tracks the number ouf outstanding blocked operations (take and read) + */ +class SearchTasks { + private static SearchTasks theTasks = new SearchTasks(); + + private AtomicInteger theTakeCount = new AtomicInteger(); + private AtomicInteger theReadCount = new AtomicInteger(); + private AtomicLong theMissedTakes = new AtomicLong(); + private AtomicLong theMissedReads = new AtomicLong(); + + public static SearchTasks get() { + return theTasks; + } + + private SearchTasks() { + StatsBoard.get().add(new BlockingStatGenerator()); + StatsBoard.get().add(new MissedStatGenerator()); + } + + public void add(MatchTask aTask) { + if (aTask.getVisitor().isDeleter()) + theTakeCount.incrementAndGet(); + else + theReadCount.incrementAndGet(); + } + + public void remove(MatchTask aTask, boolean didMiss) { + if (aTask.getVisitor().isDeleter()) { + theTakeCount.decrementAndGet(); + + if (didMiss) + theMissedTakes.incrementAndGet(); + } else { + theReadCount.decrementAndGet(); + + if (didMiss) + theMissedReads.incrementAndGet(); + } + } + + private class BlockingStatGenerator implements StatGenerator { + private long theStatId = StatGenerator.UNSET_ID; + + public long getId() { + return theStatId; + } + + public void setId(long anId) { + theStatId = anId; + } + + public Stat generate() { + return new BlockingOpsStat( + theStatId, theReadCount.intValue(), theTakeCount.intValue()); + } + } + + private class MissedStatGenerator implements StatGenerator { + private long theStatId = StatGenerator.UNSET_ID; + + public long getId() { + return theStatId; + } + + public void setId(long anId) { + theStatId = anId; + } + + public Stat generate() { + return new MissedOpsStat( + theStatId, theMissedReads.longValue(), + theMissedTakes.longValue()); + } + } +}