/**
* must only be called within the write lock. will remove chunks until capacity is no longer
* reached (i.e. there is room for one more chunk) - this is called by addSourceChunkInternal
*/
private void ensureCapacity() {
IModel model = getModel();
IMessageBuilder sb = null;
while (isCapacityReached()) {
if (sb == null) sb = Logger.messageBuilder();
else sb.clear();
/*
* remove the first..
*/
IChunk toRemove = getRemovalCandidate();
if (LOGGER.isDebugEnabled() || Logger.hasLoggers(model)) {
sb.append(toRemove.toString());
sb.append(" is being removed because capacity has been reached");
String msg = sb.toString();
if (LOGGER.isDebugEnabled()) LOGGER.debug(msg);
if (Logger.hasLoggers(model)) Logger.log(model, Logger.Stream.BUFFER, msg);
}
removeSourceChunk(toRemove);
}
if (sb != null) MessageBuilderFactory.recycle(sb);
}
@Override
protected IChunk addSourceChunkInternal(IChunk chunkToInsert) {
if (LOGGER.isDebugEnabled()) LOGGER.debug("attempting to insert " + chunkToInsert);
/*
* ok, something will be changing..
*/
IChunk errorChunk = getErrorChunk();
/*
* did something go wrong? set the states..
*/
if (errorChunk.equals(chunkToInsert)
|| !isValidChunkType(chunkToInsert.getSymbolicChunk().getChunkType())) {
if (LOGGER.isDebugEnabled())
LOGGER.debug(getName() + " : " + chunkToInsert + " was error or invalid of chunk type");
setStateChunk(errorChunk);
chunkToInsert = null;
}
/*
* all is good, let's set the chunk
*/
if (chunkToInsert != null) {
/*
* are we bumping up against the maximum capacity?
*/
ensureCapacity();
double now = ACTRRuntime.getRuntime().getClock(getModel()).getTime();
double time = Double.MIN_VALUE;
/*
* if LRA or LRU, time will be now, if modified, we set it as minimum
* double value (can't be negative inf because of potential value
* collisions, see below)
*/
switch (getEjectionPolicy()) {
case LeastRecentlyAdded:
case LeastRecentlyUsed:
case MostRecentlyAdded:
case MostRecentlyUsed:
time = now;
break;
}
/*
* problem of more than one chunk inserted at the same time (could happen
* if a production fires multiple adds)
*/
while (_sourceChunks.containsKey(time) && !chunkToInsert.equals(_sourceChunks.get(time)))
time += 0.0000001;
_sourceChunks.put(time, chunkToInsert);
_times.put(chunkToInsert, time);
if (LOGGER.isDebugEnabled())
LOGGER.debug(getName() + " Source Chunks & Times " + _sourceChunks);
IModel model = getModel();
if (LOGGER.isDebugEnabled() || Logger.hasLoggers(model)) {
IMessageBuilder sb = Logger.messageBuilder();
sb.append(getName())
.append(" inserted ")
.append(chunkToInsert.getSymbolicChunk().getName());
if (LOGGER.isDebugEnabled()) LOGGER.debug(sb.toString());
Logger.log(model, Logger.Stream.BUFFER, sb);
}
chunkInserted(chunkToInsert);
}
return chunkToInsert;
}