@Override
public void applySlotChanges(
Visitable<SlotChange> slotChangeTree, int slotChangeCount, Slot reservedSlot) {
if (slotChangeCount < 1) {
return;
}
Runnable commitHook = _container.commitHook();
flushDatabaseFile();
ensureLogAndLock();
int length = transactionLogSlotLength(slotChangeCount);
ByteArrayBuffer logBuffer = new ByteArrayBuffer(length);
logBuffer.writeInt(length);
logBuffer.writeInt(slotChangeCount);
appendSlotChanges(logBuffer, slotChangeTree);
write(_logFile, logBuffer);
_logFile.sync();
writeToLockFile(LOCK_INT);
writeSlots(slotChangeTree);
commitHook.run();
flushDatabaseFile();
writeToLockFile(0);
}
private void writeToLockFile(int lockSignal) {
ByteArrayBuffer lockBuffer = newLockFileBuffer();
lockBuffer.writeInt(lockSignal);
lockBuffer.writeInt(lockSignal);
write(_lockFile, lockBuffer);
_lockFile.sync();
}
public void write(ByteArrayBuffer writer) {
if (slotModified()) {
writer.writeInt(_key);
writer.writeInt(_newSlot.address());
writer.writeInt(_newSlot.length());
}
}
public void write(ByteArrayBuffer writer) {
writer.writeInt(indexAddress);
writer.writeInt(indexEntries);
writer.writeInt(indexLength);
writer.writeInt(patchAddress);
writer.writeInt(patchEntries);
writer.writeInt(patchLength);
}
public void write(Object a_object, ByteArrayBuffer a_bytes) {
if (Deploy.debug) {
a_bytes.writeBegin(Const4.YAPBYTE);
}
a_bytes.writeByte(((Byte) a_object).byteValue());
if (Deploy.debug) {
a_bytes.writeEnd();
}
}
public RawClassSpec readSpec(Transaction trans, ByteArrayBuffer reader) {
byte[] nameBytes = readName(trans, reader);
String className = trans.container().stringIO().read(nameBytes);
readMetaClassID(reader); // skip
int ancestorID = reader.readInt();
reader.incrementOffset(Const4.INT_LENGTH); // index ID
int numFields = reader.readInt();
return new RawClassSpec(className, ancestorID, numFields);
}
public void read(ByteArrayBuffer reader) {
indexAddress = reader.readInt();
indexEntries = reader.readInt();
indexLength = reader.readInt();
// no longer used apparently
/*patchAddress = */ reader.readInt();
/*patchEntries = */ reader.readInt();
/*patchLength = */ reader.readInt();
}
Object read1(ByteArrayBuffer a_bytes) {
if (Deploy.debug) {
a_bytes.readBegin(Const4.YAPBYTE);
}
byte ret = a_bytes.readByte();
if (Deploy.debug) {
a_bytes.readEnd();
}
return new Byte(ret);
}
static final void writeShort(int a_short, ByteArrayBuffer a_bytes) {
if (Deploy.debug) {
a_bytes.writeBegin(Const4.YAPSHORT);
}
for (int i = 0; i < Const4.SHORT_BYTES; i++) {
a_bytes._buffer[a_bytes._offset++] = (byte) (a_short >> ((Const4.SHORT_BYTES - 1 - i) * 8));
}
if (Deploy.debug) {
a_bytes.writeEnd();
}
}
private byte[] readName(LatinStringIO sio, ByteArrayBuffer reader) {
if (Deploy.debug) {
reader.readBegin(Const4.YAPCLASS);
}
int len = reader.readInt();
len = len * sio.bytesPerChar();
byte[] nameBytes = new byte[len];
System.arraycopy(reader._buffer, reader._offset, nameBytes, 0, len);
nameBytes = Platform4.updateClassName(nameBytes);
reader.incrementOffset(len);
return nameBytes;
}
public Object read(ByteArrayBuffer buffer) {
int size = buffer.readInt();
int address = buffer.readInt();
if (size > sizeLimit) {
FreeSlotNode node = new FreeSlotNode(size);
node.createPeer(address);
if (Deploy.debug && Debug.xbytes) {
debugCheckBuffer(buffer, node);
}
return node;
}
return null;
}
private boolean lockFileSignalsInterruptedTransaction() {
openLockFile();
ByteArrayBuffer buffer = newLockFileBuffer();
read(_lockFile, buffer);
for (int i = 0; i < 2; i++) {
int checkInt = buffer.readInt();
if (checkInt != LOCK_INT) {
closeLockFile();
return false;
}
}
closeLockFile();
return true;
}
public final void read(ObjectContainerBase stream, ClassMetadata clazz, ByteArrayBuffer reader) {
clazz.setAncestor(stream.classMetadataForId(reader.readInt()));
if (clazz.callConstructor()) {
// The logic further down checks the ancestor YapClass, whether
// or not it is allowed, not to call constructors. The ancestor
// YapClass may possibly have not been loaded yet.
clazz.createConstructor(stream, clazz.classReflector(), clazz.getName(), true);
}
clazz.checkType();
readIndex(stream, clazz, reader);
clazz._aspects = createFields(clazz, reader.readInt());
readFields(stream, reader, clazz._aspects);
}
public void write(
final Transaction trans, final ClassMetadata clazz, final ByteArrayBuffer writer) {
writer.writeShortString(trans, clazz.nameToWrite());
int intFormerlyKnownAsMetaClassID = 0;
writer.writeInt(intFormerlyKnownAsMetaClassID);
writer.writeIDOf(trans, clazz.i_ancestor);
writeIndex(trans, clazz, writer);
writer.writeInt(clazz.declaredAspectCount());
clazz.forEachDeclaredAspect(
new Procedure4() {
public void apply(Object arg) {
_family._field.write(trans, clazz, (ClassAspect) arg, writer);
}
});
}
public void completeInterruptedTransaction(int transactionId1, int transactionId2) {
if (!File4.exists(lockFileName(_fileName))) {
return;
}
if (!lockFileSignalsInterruptedTransaction()) {
return;
}
ByteArrayBuffer buffer = new ByteArrayBuffer(Const4.INT_LENGTH);
openLogFile();
read(_logFile, buffer);
int length = buffer.readInt();
if (length > 0) {
buffer = new ByteArrayBuffer(length);
read(_logFile, buffer);
buffer.incrementOffset(Const4.INT_LENGTH);
readWriteSlotChanges(buffer);
}
deleteLockFile();
closeLogFile();
deleteLogFile();
}
protected void readIndex(
ObjectContainerBase stream, ClassMetadata clazz, ByteArrayBuffer reader) {
int indexID = reader.readInt();
if (!stream.maintainsIndices() || !(stream instanceof LocalObjectContainer)) {
return;
}
if (btree(clazz) != null) {
return;
}
clazz.index().read(stream, validIndexId(indexID));
if (isOldClassIndex(indexID)) {
new ClassIndexesToBTrees_5_5().convert((LocalObjectContainer) stream, indexID, btree(clazz));
stream.setDirtyInSystemTransaction(clazz);
}
}
public Object read(ByteArrayBuffer reader) {
SlotChange change = new SlotChange(reader.readInt());
Slot newSlot = new Slot(reader.readInt(), reader.readInt());
change.newSlot(newSlot);
return change;
}
private void write(Bin storage, ByteArrayBuffer buffer) {
storage.write(0, buffer._buffer, buffer.length());
}
private void read(Bin storage, ByteArrayBuffer buffer) {
storage.read(0, buffer._buffer, buffer.length());
}
protected void writeIndex(Transaction trans, ClassMetadata clazz, ByteArrayBuffer writer) {
int indexID = clazz.index().write(trans);
writer.writeInt(indexIDForWriting(indexID));
}
public final void write(ByteArrayBuffer a_writer) {
// byte order: size, address
a_writer.writeInt(_key);
a_writer.writeInt(_peer._key);
}
public final int readMetaClassID(ByteArrayBuffer reader) {
return reader.readInt();
}