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.BooleanFunction;
import org.multiverse.api.predicates.BooleanPredicate;
import org.multiverse.api.references.TxnBoolean;
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.*;
import static org.multiverse.stms.gamma.ThreadLocalGammaObjectPool.getThreadLocalGammaObjectPool;
/**
* A {@link org.multiverse.api.references.TxnBoolean} for the {@link GammaStm}.
*
* @author Peter Veentjer.
*/
public class GammaTxnBoolean extends BaseGammaTxnRef implements TxnBoolean {
public GammaTxnBoolean(boolean value){
this((GammaStm) getGlobalStmInstance(),value);
}
public GammaTxnBoolean(final GammaTxn tx) {
this(tx, false);
}
public GammaTxnBoolean(final GammaTxn tx, final boolean value) {
super(tx.getConfig().stm, TYPE_BOOLEAN);
arriveAndLock(1, LOCKMODE_EXCLUSIVE);
Tranlocal tranlocal = openForConstruction(tx);
tranlocal.long_value = booleanAsLong(value);
}
public GammaTxnBoolean(final GammaStm stm) {
this(stm, false);
}
public GammaTxnBoolean(final GammaStm stm, final boolean b) {
super(stm, TYPE_BOOLEAN);
this.long_value = booleanAsLong(b);
//noinspection PointlessArithmeticExpression
this.version = VERSION_UNCOMMITTED + 1;
}
@Override
public final boolean get() {
return get(getRequiredThreadLocalGammaTxn());
}
@Override
public final boolean get(final Txn tx) {
return get(asGammaTxn(tx));
}
public final boolean get(final GammaTxn tx) {
return longAsBoolean(openForRead(tx, LOCKMODE_NONE).long_value);
}
@Override
public final boolean getAndLock(LockMode lockMode) {
return getAndLock(getRequiredThreadLocalGammaTxn(), lockMode);
}
@Override
public final boolean getAndLock(Txn tx, LockMode lockMode) {
return getAndLock(asGammaTxn(tx), lockMode);
}
public final boolean getAndLock(GammaTxn tx, LockMode lockMode) {
return longAsBoolean(getLong(asGammaTxn(tx), lockMode));
}
@Override
public final boolean set(final boolean value) {
return set(getRequiredThreadLocalGammaTxn(), value);
}
@Override
public final boolean set(final Txn tx, final boolean value) {
return set(asGammaTxn(tx), value);
}
public final boolean set(final GammaTxn tx, final boolean value) {
openForWrite(tx, LOCKMODE_NONE).long_value = booleanAsLong(value);
return value;
}
@Override
public final boolean setAndLock(boolean value, LockMode lockMode) {
return setAndLock(getRequiredThreadLocalGammaTxn(), value, lockMode);
}
@Override
public final boolean setAndLock(Txn tx, boolean value, LockMode lockMode) {
return setAndLock(asGammaTxn(tx), value, lockMode);
}
public final boolean setAndLock(GammaTxn tx, boolean value, LockMode lockMode) {
return longAsBoolean(setLong(tx, lockMode, booleanAsLong(value), false));
}
@Override
public final boolean getAndSet(final boolean value) {
return getAndSet(getRequiredThreadLocalGammaTxn(), value);
}
@Override
public final boolean getAndSet(final Txn tx, final boolean value) {
return getAndSet(asGammaTxn(tx), value);
}
@Override
public final boolean getAndSetAndLock(boolean value, LockMode lockMode) {
return getAndSetAndLock(getRequiredThreadLocalGammaTxn(), value, lockMode);
}
@Override
public final boolean getAndSetAndLock(Txn tx, boolean value, LockMode lockMode) {
return getAndSetAndLock(asGammaTxn(tx), value, lockMode);
}
public final boolean getAndSetAndLock(GammaTxn tx, boolean value, LockMode lockMode) {
return longAsBoolean(setLong(tx, lockMode, booleanAsLong(value), true));
}
public final boolean getAndSet(final GammaTxn tx, final boolean value) {
Tranlocal tranlocal = openForWrite(tx, LOCKMODE_NONE);
boolean oldValue = longAsBoolean(tranlocal.long_value);
tranlocal.long_value = booleanAsLong(value);
return oldValue;
}
@Override
public final boolean atomicGet() {
return longAsBoolean(atomicGetLong());
}
@Override
public final boolean atomicWeakGet() {
return longAsBoolean(long_value);
}
@Override
public final boolean atomicSet(final boolean newValue) {
return longAsBoolean(atomicSetLong(booleanAsLong(newValue), false));
}
@Override
public final boolean atomicGetAndSet(final boolean newValue) {
return longAsBoolean(atomicSetLong(booleanAsLong(newValue), true));
}
@Override
public final void commute(final BooleanFunction function) {
commute(getRequiredThreadLocalGammaTxn(), function);
}
@Override
public final void commute(final Txn tx, final BooleanFunction function) {
commute(asGammaTxn(tx), function);
}
public final void commute(final GammaTxn tx, final BooleanFunction function) {
openForCommute(tx, function);
}
@Override
public final boolean getAndAlter(final BooleanFunction function) {
return getAndAlter(getRequiredThreadLocalGammaTxn(), function);
}
@Override
public final boolean getAndAlter(final Txn tx, final BooleanFunction function) {
return getAndAlter(asGammaTxn(tx), function);
}
public final boolean getAndAlter(final GammaTxn tx, final BooleanFunction function) {
return alter(tx, function, true);
}
@Override
public final boolean alterAndGet(final BooleanFunction function) {
return alterAndGet(getRequiredThreadLocalGammaTxn(), function);
}
@Override
public final boolean alterAndGet(final Txn tx, final BooleanFunction function) {
return alterAndGet(asGammaTxn(tx), function);
}
public final boolean alterAndGet(final GammaTxn tx, final BooleanFunction function) {
return alter(tx, function, false);
}
public final boolean alter(final GammaTxn tx, final BooleanFunction 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 {
boolean oldValue = longAsBoolean(write.long_value);
write.long_value = booleanAsLong(function.call(oldValue));
abort = false;
return returnOld ? oldValue : longAsBoolean(write.long_value);
} finally {
if (abort) {
tx.abort();
}
}
}
@Override
public final boolean atomicAlterAndGet(final BooleanFunction function) {
return atomicAlter(function, false);
}
@Override
public final boolean atomicGetAndAlter(final BooleanFunction function) {
return atomicAlter(function, true);
}
private boolean atomicAlter(final BooleanFunction 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 boolean oldValue = longAsBoolean(long_value);
boolean 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 = booleanAsLong(newValue);
//noinspection NonAtomicOperationOnVolatileField
version++;
final Listeners listeners = ___removeListenersAfterWrite();
departAfterUpdateAndUnlock();
if (listeners != null) {
listeners.openAll(getThreadLocalGammaObjectPool());
}
return returnOld ? oldValue : newValue;
}
@Override
public final boolean atomicCompareAndSet(final boolean expectedValue, final boolean newValue) {
return atomicCompareAndSetLong(booleanAsLong(expectedValue), booleanAsLong(newValue));
}
@Override
public final void await(final boolean value) {
await(getRequiredThreadLocalGammaTxn(), value);
}
@Override
public final void await(final Txn tx, final boolean value) {
await(asGammaTxn(tx), value);
}
public final void await(final GammaTxn tx, final boolean value) {
if (longAsBoolean(openForRead(tx, LOCKMODE_NONE).long_value) != value) {
tx.retry();
}
}
@Override
public final void await(final BooleanPredicate predicate) {
await(getRequiredThreadLocalGammaTxn(), predicate);
}
@Override
public final void await(final Txn tx, final BooleanPredicate predicate) {
await(asGammaTxn(tx), predicate);
}
public final void await(final GammaTxn tx, final BooleanPredicate predicate) {
final Tranlocal tranlocal = openForRead(tx, LOCKMODE_NONE);
boolean abort = true;
try {
if (!predicate.evaluate(longAsBoolean(tranlocal.long_value))) {
tx.retry();
}
abort = false;
} finally {
if (abort) {
tx.abort();
}
}
}
@Override
public final String toDebugString() {
return String.format("GammaTxnBoolean{orec=%s, version=%s, value=%s, hasListeners=%s)",
___toOrecString(), version, longAsBoolean(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 Boolean.toString(get(tx));
}
@Override
public final String atomicToString() {
return Boolean.toString(atomicGet());
}
}