/**
* Default constructor.
*
* @param name Sequence name.
* @param key Sequence key.
* @param seqView Sequence projection.
* @param ctx CacheContext.
* @param locVal Local counter.
* @param upBound Upper bound.
*/
public GridCacheAtomicSequenceImpl(
String name,
GridCacheInternalStorableKey key,
GridCacheProjection<GridCacheInternalStorableKey, GridCacheAtomicSequenceValue> seqView,
GridCacheContext ctx,
long locVal,
long upBound) {
assert key != null;
assert seqView != null;
assert ctx != null;
assert locVal <= upBound;
batchSize = ctx.config().getAtomicSequenceReserveSize();
this.ctx = ctx;
this.key = key;
this.seqView = seqView;
this.upBound = upBound;
this.locVal = locVal;
this.name = name;
log = ctx.gridConfig().getGridLogger().getLogger(getClass());
}
/**
* Default constructor.
*
* @param name Atomic reference name.
* @param key Atomic reference key.
* @param atomicView Atomic projection.
* @param ctx Cache context.
*/
public GridCacheAtomicReferenceImpl(
String name,
GridCacheInternalKey key,
GridCacheProjection<GridCacheInternalKey, GridCacheAtomicReferenceValue<T>> atomicView,
GridCacheContext ctx) {
assert key != null;
assert atomicView != null;
assert ctx != null;
assert name != null;
this.ctx = ctx;
this.key = key;
this.atomicView = atomicView;
this.name = name;
log = ctx.gridConfig().getGridLogger().getLogger(getClass());
}
/**
* Asynchronous sequence update operation. Will add given amount to the sequence value.
*
* @param l Increment amount.
* @param updateCall Cache call that will update sequence reservation count in accordance with l.
* @param updated If {@code true}, will return sequence value after update, otherwise will return
* sequence value prior to update.
* @return Future indicating sequence value.
* @throws GridException If update failed.
*/
private GridFuture<Long> internalUpdateAsync(
long l, @Nullable Callable<Long> updateCall, boolean updated) throws GridException {
checkRemoved();
A.ensure(l > 0, " Parameter mustn't be less then 1: " + l);
lock.lock();
try {
// If reserved range isn't exhausted.
if (locVal + l <= upBound) {
long curVal = locVal;
locVal += l;
return new GridFinishedFuture<Long>(ctx.kernalContext(), updated ? locVal : curVal);
}
} finally {
lock.unlock();
}
if (updateCall == null) updateCall = internalUpdate(l, updated);
while (true) {
if (updateGuard.compareAndSet(false, true)) {
try {
// This call must be outside lock.
return ctx.closures().callLocalSafe(updateCall, true);
} finally {
lock.lock();
try {
updateGuard.set(false);
cond.signalAll();
} finally {
lock.unlock();
}
}
} else {
lock.lock();
try {
while (locVal >= upBound && updateGuard.get()) {
try {
cond.await(500, MILLISECONDS);
} catch (InterruptedException e) {
throw new GridInterruptedException(e);
}
}
checkRemoved();
// If reserved range isn't exhausted.
if (locVal + l <= upBound) {
long curVal = locVal;
locVal += l;
return new GridFinishedFuture<Long>(ctx.kernalContext(), updated ? locVal : curVal);
}
} finally {
lock.unlock();
}
}
}
}