private boolean matchMergeId(MergeId id) {
merge_lock.lock();
try {
return Util.match(this.merge_id, id);
} finally {
merge_lock.unlock();
}
}
private boolean setMergeId(MergeId expected, MergeId new_value) {
merge_lock.lock();
try {
boolean match = Util.match(this.merge_id, expected);
if (match) {
this.merge_id = new_value;
stopMergeCanceller();
if (this.merge_id != null) startMergeCanceller();
}
return match;
} finally {
merge_lock.unlock();
}
}
public static void testMatch() {
long[] a = {1, 2, 3};
long[] b = {2, 3, 4};
long[] c = null;
long[] d = {1, 2, 3, 4};
long[] e = {1, 2, 3};
assert Util.match(a, a);
assert !(Util.match(a, b));
assert !(Util.match(a, c));
assert !(Util.match(a, d));
assert Util.match(a, e);
assert Util.match(c, c);
assert !(Util.match(c, a));
}
public boolean setMergeId(MergeId expected, MergeId new_value) {
merge_lock.lock();
try {
boolean match = Util.match(this.merge_id, expected);
if (match) {
if (new_value != null && merge_id_history.contains(new_value)) return false;
else merge_id_history.add(new_value);
this.merge_id = new_value;
if (this.merge_id != null) {
// Clears the view handler queue and discards all JOIN/LEAVE/MERGE requests until after
// the MERGE
gms.getViewHandler().suspend();
gms.getDownProtocol().down(new Event(Event.SUSPEND_STABLE, 20000));
startMergeKiller();
}
}
return match;
} finally {
merge_lock.unlock();
}
}