in core/src/main/java/org/apache/mina/service/idlechecker/IndexedIdleChecker.java [120:163]
public void sessionRead(AbstractIoSession session, long timeInMs) {
if (IS_DEBUG) {
LOG.debug("session read event, compute idle index of session {}", session);
}
// remove from the old index position
Integer oldIndex = session.getAttribute(READ_IDLE_INDEX);
if (oldIndex != null && readIdleSessionIndex[oldIndex] != null) {
if (IS_DEBUG) {
LOG.debug("remove for old index {}", oldIndex);
}
readIdleSessionIndex[oldIndex].remove(session);
}
long idleTimeInMs = session.getConfig().getIdleTimeInMillis(IdleStatus.READ_IDLE);
// is idle enabled ?
if (idleTimeInMs <= 0L) {
if (IS_DEBUG) {
LOG.debug("no read idle configuration");
}
} else {
int nextIdleTimeInSeconds = (int) ((timeInMs + idleTimeInMs) / 1000L);
int index = nextIdleTimeInSeconds % MAX_IDLE_TIME_IN_SEC;
if (IS_DEBUG) {
LOG.debug("computed index : {}", index);
}
if (readIdleSessionIndex[index] == null) {
readIdleSessionIndex[index] = Collections
.newSetFromMap(new ConcurrentHashMap<AbstractIoSession, Boolean>());
}
if (IS_DEBUG) {
LOG.debug("marking session {} idle for index {}", session, index);
}
readIdleSessionIndex[index].add(session);
session.setAttribute(READ_IDLE_INDEX, index);
}
}