/**
* Set local batch size for this sequences.
*
* @param size Sequence batch size. Must be more then 0.
*/
@Override
public void batchSize(int size) {
A.ensure(size > 0, " Batch size can't be less then 0: " + size);
lock.lock();
try {
batchSize = size;
} finally {
lock.unlock();
}
}
/** {@inheritDoc} */
@Override
public GridFuture<Long> getAndAddAsync(long l) throws GridException {
A.ensure(l > 0, " Parameter mustn't be less then 1: " + l);
return internalUpdateAsync(l, null, false);
}
/**
* 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();
}
}
}
}
/** {@inheritDoc} */
@Override
public long addAndGet(long l) throws GridException {
A.ensure(l > 0, " Parameter mustn't be less then 1: " + l);
return internalUpdate(l, null, true);
}