package org.multiverse.stms.gamma.transactionalobjects;
import org.multiverse.api.LockMode;
import org.multiverse.api.Txn;
import org.multiverse.api.exceptions.LockedException;
import org.multiverse.api.functions.Functions;
import org.multiverse.api.functions.LongFunction;
import org.multiverse.api.predicates.LongPredicate;
import org.multiverse.api.references.TxnLong;
import org.multiverse.stms.gamma.GammaStm;
import org.multiverse.stms.gamma.Listeners;
import org.multiverse.stms.gamma.transactions.GammaTxn;
import static org.multiverse.api.GlobalStmInstance.getGlobalStmInstance;
import static org.multiverse.stms.gamma.GammaStmUtils.asGammaTxn;
import static org.multiverse.stms.gamma.GammaStmUtils.getRequiredThreadLocalGammaTxn;
import static org.multiverse.stms.gamma.ThreadLocalGammaObjectPool.getThreadLocalGammaObjectPool;
/**
* A {@link org.multiverse.api.references.TxnLong} for the {@link GammaStm}.
*
* @author Peter Veentjer.
*/
@SuppressWarnings({"OverlyComplexClass"})
public class GammaTxnLong extends BaseGammaTxnRef implements TxnLong {
public GammaTxnLong(long value) {
this((GammaStm) getGlobalStmInstance(), value);
}
public GammaTxnLong(final GammaStm stm) {
this(stm, 0);
}
public GammaTxnLong(final GammaStm stm, long initialValue) {
super(stm, TYPE_LONG);
this.long_value = initialValue;
//noinspection PointlessArithmeticExpression
this.version = VERSION_UNCOMMITTED + 1;
}
public GammaTxnLong(final GammaTxn tx) {
this(tx, 0);
}
public GammaTxnLong(final GammaTxn tx, final long value) {
super(tx.getConfig().stm, TYPE_LONG);
arriveAndLock(1, LOCKMODE_EXCLUSIVE);
Tranlocal tranlocal = openForConstruction(tx);
tranlocal.long_value = value;
}
@Override
public final long get() {
return get(getRequiredThreadLocalGammaTxn());
}
@Override
public final long get(final Txn tx) {
return get(asGammaTxn(tx));
}
public final long get(final GammaTxn tx) {
return openForRead(tx, LOCKMODE_NONE).long_value;
}
@Override
public final long getAndLock(final LockMode lockMode) {
return getAndLock(getRequiredThreadLocalGammaTxn(), lockMode);
}
@Override
public final long getAndLock(final Txn tx, final LockMode lockMode) {
return getAndLock(asGammaTxn(tx), lockMode);
}
public final long getAndLock(final GammaTxn tx, final LockMode lockMode) {
return getLong(tx, lockMode);
}
@Override
public final long set(final long value) {
return set(getRequiredThreadLocalGammaTxn(), value);
}
@Override
public final long set(final Txn tx, final long value) {
return set(asGammaTxn(tx), value);
}
public final long set(final GammaTxn tx, final long value) {
openForWrite(tx, LOCKMODE_NONE).long_value = value;
return value;
}
@Override
public final long setAndLock(final long value, final LockMode lockMode) {
return setAndLock(getRequiredThreadLocalGammaTxn(), value, lockMode);
}
@Override
public final long setAndLock(final Txn tx, final long value, final LockMode lockMode) {
return setAndLock(asGammaTxn(tx), value, lockMode);
}
public final long setAndLock(final GammaTxn tx, final long value, final LockMode lockMode) {
return setLong(tx, lockMode, value, false);
}
@Override
public final long getAndSet(final long value) {
return getAndSet(getRequiredThreadLocalGammaTxn(), value);
}
public final long getAndSet(final Txn tx, final long value) {
return getAndSet(asGammaTxn(tx), value);
}
public final long getAndSet(final GammaTxn tx, final long value) {
final Tranlocal tranlocal = openForWrite(tx, LOCKMODE_NONE);
final long oldValue = tranlocal.long_value;
tranlocal.long_value = value;
return oldValue;
}
@Override
public final long getAndSetAndLock(final long value, final LockMode lockMode) {
return getAndSetAndLock(getRequiredThreadLocalGammaTxn(), value, lockMode);
}
@Override
public final long getAndSetAndLock(final Txn tx, final long value, final LockMode lockMode) {
return getAndSetLock(asGammaTxn(tx), value, lockMode);
}
public final long getAndSetLock(final GammaTxn tx, final long value, final LockMode lockMode) {
return setLong(tx, lockMode, value, true);
}
@Override
public final long atomicGet() {
return atomicGetLong();
}
@Override
public final long atomicWeakGet() {
return long_value;
}
@Override
public final long atomicSet(final long newValue) {
return atomicSetLong(newValue, false);
}
@Override
public final long atomicGetAndSet(final long newValue) {
return atomicSetLong(newValue, true);
}
@Override
public final void commute(final LongFunction function) {
commute(getRequiredThreadLocalGammaTxn(), function);
}
@Override
public final void commute(Txn tx, LongFunction function) {
openForCommute(asGammaTxn(tx), function);
}
public final void commute(GammaTxn tx, LongFunction function) {
openForCommute(tx, function);
}
@Override
public final long atomicAlterAndGet(final LongFunction function) {
return atomicAlter(function, false);
}
private long atomicAlter(final LongFunction function, final boolean returnOld) {
if (function == null) {
throw new NullPointerException("Function can't be null");
}
final int arriveStatus = arriveAndExclusiveLockOrBackoff();
if (arriveStatus == FAILURE) {
throw new LockedException();
}
final long oldValue = long_value;
long newValue;
boolean abort = true;
try {
newValue = function.call(oldValue);
abort = false;
} finally {
if (abort) {
departAfterFailureAndUnlock();
}
}
if (oldValue == newValue) {
if ((arriveStatus & MASK_UNREGISTERED) != 0) {
unlockByUnregistered();
} else {
departAfterReadingAndUnlock();
}
return oldValue;
}
if ((arriveStatus & MASK_CONFLICT) != 0) {
stm.globalConflictCounter.signalConflict();
}
long_value = newValue;
//noinspection NonAtomicOperationOnVolatileField
version++;
final Listeners listeners = ___removeListenersAfterWrite();
departAfterUpdateAndUnlock();
if (listeners != null) {
listeners.openAll(getThreadLocalGammaObjectPool());
}
return returnOld ? oldValue : newValue;
}
@Override
public final long alterAndGet(final LongFunction function) {
return alterAndGet(getRequiredThreadLocalGammaTxn(), function);
}
@Override
public final long alterAndGet(final Txn tx, final LongFunction function) {
return alterAndGet(asGammaTxn(tx), function);
}
public final long alterAndGet(final GammaTxn tx, final LongFunction function) {
return alter(tx, function, false);
}
@Override
public final long atomicGetAndAlter(final LongFunction function) {
return atomicAlter(function, true);
}
@Override
public final long getAndAlter(final LongFunction function) {
return getAndAlter(getRequiredThreadLocalGammaTxn(), function);
}
@Override
public final long getAndAlter(final Txn tx, final LongFunction function) {
return getAndAlter(asGammaTxn(tx), function);
}
public final long getAndAlter(final GammaTxn tx, final LongFunction function) {
return alter(tx, function, true);
}
private long alter(final GammaTxn tx, final LongFunction function, final boolean returnOld) {
if (tx == null) {
throw new NullPointerException();
}
if (function == null) {
tx.abort();
throw new NullPointerException("Function can't be null");
}
final Tranlocal write = openForWrite(tx, LOCKMODE_NONE);
boolean abort = true;
try {
long oldValue = write.long_value;
write.long_value = function.call(oldValue);
abort = false;
return returnOld ? oldValue : write.long_value;
} finally {
if (abort) {
tx.abort();
}
}
}
@Override
public final boolean atomicCompareAndSet(final long expectedValue, final long newValue) {
return atomicCompareAndSetLong(expectedValue, newValue);
}
@Override
public final long atomicGetAndIncrement(final long amount) {
final long result = atomicIncrementAndGet(amount);
return result - amount;
}
@Override
public final long getAndIncrement(final long amount) {
return getAndIncrement(getRequiredThreadLocalGammaTxn(), amount);
}
@Override
public final long getAndIncrement(final Txn tx, final long amount) {
return getAndIncrement((GammaTxn) tx, amount);
}
public final long getAndIncrement(final GammaTxn tx, final long amount) {
final Tranlocal tranlocal = openForWrite(tx, LOCKMODE_NONE);
final long oldValue = tranlocal.long_value;
tranlocal.long_value += amount;
return oldValue;
}
@Override
public final long atomicIncrementAndGet(final long amount) {
final int arriveStatus = arriveAndExclusiveLockOrBackoff();
if (arriveStatus == FAILURE) {
throw new LockedException();
}
final long oldValue = long_value;
if (amount == 0) {
if ((arriveStatus & MASK_UNREGISTERED) != 0) {
unlockByUnregistered();
} else {
departAfterReadingAndUnlock();
}
return oldValue;
}
if ((arriveStatus & MASK_CONFLICT) != 0) {
stm.globalConflictCounter.signalConflict();
}
final long newValue = oldValue + amount;
long_value = newValue;
//noinspection NonAtomicOperationOnVolatileField
version++;
final Listeners listeners = ___removeListenersAfterWrite();
departAfterUpdateAndUnlock();
if (listeners != null) {
listeners.openAll(getThreadLocalGammaObjectPool());
}
return newValue;
}
@Override
public final long incrementAndGet(final long amount) {
return incrementAndGet(getRequiredThreadLocalGammaTxn(), amount);
}
@Override
public final long incrementAndGet(final Txn tx, final long amount) {
return incrementAndGet(asGammaTxn(tx), amount);
}
public final long incrementAndGet(final GammaTxn tx, final long amount) {
final Tranlocal tranlocal = openForWrite(tx, LOCKMODE_NONE);
tranlocal.long_value += amount;
return tranlocal.long_value;
}
@Override
public final void increment() {
increment(getRequiredThreadLocalGammaTxn());
}
@Override
public final void increment(final Txn tx) {
commute(asGammaTxn(tx), Functions.incLongFunction());
}
public final void increment(final GammaTxn tx) {
commute(tx, Functions.incLongFunction());
}
@Override
public final void increment(final long amount) {
commute(getRequiredThreadLocalGammaTxn(), Functions.incLongFunction(amount));
}
@Override
public final void increment(final Txn tx, final long amount) {
commute(asGammaTxn(tx), Functions.incLongFunction(amount));
}
@Override
public final void decrement() {
commute(getRequiredThreadLocalGammaTxn(), Functions.decLongFunction());
}
@Override
public final void decrement(final Txn tx) {
commute(asGammaTxn(tx), Functions.decLongFunction());
}
@Override
public final void decrement(final long amount) {
commute(getRequiredThreadLocalGammaTxn(), Functions.incLongFunction(-amount));
}
@Override
public final void decrement(final Txn tx, final long amount) {
commute(asGammaTxn(tx), Functions.incLongFunction(-amount));
}
@Override
public final void await(final long value) {
await(getRequiredThreadLocalGammaTxn(), value);
}
@Override
public final void await(final Txn tx, final long value) {
await(asGammaTxn(tx), value);
}
public final void await(final GammaTxn tx, final long value) {
if (openForRead(tx, LOCKMODE_NONE).long_value != value) {
tx.retry();
}
}
@Override
public final void await(final LongPredicate predicate) {
await(getRequiredThreadLocalGammaTxn(), predicate);
}
@Override
public final void await(final Txn tx, final LongPredicate predicate) {
await(asGammaTxn(tx), predicate);
}
public final void await(final GammaTxn tx, final LongPredicate predicate) {
final Tranlocal tranlocal = openForRead(tx, LOCKMODE_NONE);
boolean abort = true;
try {
if (!predicate.evaluate(tranlocal.long_value)) {
tx.retry();
}
abort = false;
} finally {
if (abort) {
tx.abort();
}
}
}
@Override
public final String toDebugString() {
return String.format("GammaTxnLong{orec=%s, version=%s, value=%s, hasListeners=%s)",
___toOrecString(), version, long_value, listeners != null);
}
@Override
public final String toString() {
return toString(getRequiredThreadLocalGammaTxn());
}
@Override
public final String toString(Txn tx) {
return toString(asGammaTxn(tx));
}
public final String toString(GammaTxn tx) {
return Long.toString(get(tx));
}
@Override
public final String atomicToString() {
return Long.toString(atomicGet());
}
}