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Changeset 2594

Timestamp:

07/05/08 22:16:05 (3 months ago)

Author:

jmoore

Message:

ticket:1018 - Changed reference counting logic

Location:

trunk/components/server/src/ome/services/sessions

Files:

r2592	r2594
11	11	import java.util.Collections;
12	12	import java.util.List;
13		~~import java.util.concurrent.atomic.AtomicInteger;~~
14	13
15	14	import ome.model.meta.Session;
…	…
17	16	public class SessionContextImpl implements SessionContext {
18	17
19		private final AtomicInteger refCount = new AtomicInteger(0);
	18	private int ref = 0;
	19	private final Object refLock = new Object();
20	20	private final Session session;
21	21	private final List<Long> leaderOfGroups;
…	…
34	34
35	35	public int refCount() {
36		return refCount.get();
	36	synchronized (refLock) {
	37	return ref;
	38	}
37	39	}
38	40
39	41	public int increment() {
40		return refCount.incrementAndGet();
	42	synchronized (refLock) {
	43	if (ref < 0) {
	44	ref = 1;
	45	} else {
	46	ref = ref + 1;
	47	}
	48	return ref;
	49	}
41	50	}
42	51
43	52	public int decrement() {
44		return refCount.decrementAndGet();
	53	synchronized (refLock) {
	54	if (ref < 1) {
	55	ref = 0;
	56	} else {
	57	ref = ref - 1;
	58	}
	59	return ref;
	60	}
45	61	}
46	62

r2592	r2594
75	75	Session find(String uuid);
76	76
77		void close(String uuid);
	77	/**
	78	* If reference count for the session is less than 1, close the session.
	79	* Otherwise decrement the reference count. The current reference count is
	80	* returned. If -1, then no such session existed. If -2, then the session
	81	* was removed.
	82	*/
	83	int close(String uuid);
78	84
79	85	// Security methods

r2592	r2594
313	313	/*
314	314	*/
315		public ~~void~~ close(String uuid) {
	315	public int close(String uuid) {
316	316
317	317	SessionContext ctx;
…	…
319	319	ctx = cache.getSessionContext(uuid);
320	320	} catch (SessionException se) {
321		return; // EARLY EXIT!
	321	return -1; // EARLY EXIT!
322	322	}
323	323
…	…
340	340	// since ehcache is not tx-friendly.
341	341	cache.removeSession(uuid);
	342	return -2;
	343	} else {
	344	return refCount;
342	345	}
343	346	}