internal void pack(Page pg, int i)
{
byte[] dst = pg.data;
switch (key.type)
{
case ClassDescriptor.FieldType.tpBoolean:
case ClassDescriptor.FieldType.tpSByte:
case ClassDescriptor.FieldType.tpByte:
dst[BtreePage.firstKeyOffs + i] = (byte)key.ival;
break;
case ClassDescriptor.FieldType.tpShort:
case ClassDescriptor.FieldType.tpUShort:
case ClassDescriptor.FieldType.tpChar:
Bytes.pack2(dst, BtreePage.firstKeyOffs + i * 2, (short)key.ival);
break;
case ClassDescriptor.FieldType.tpInt:
case ClassDescriptor.FieldType.tpUInt:
case ClassDescriptor.FieldType.tpEnum:
case ClassDescriptor.FieldType.tpObject:
case ClassDescriptor.FieldType.tpOid:
Bytes.pack4(dst, BtreePage.firstKeyOffs + i * 4, key.ival);
break;
case ClassDescriptor.FieldType.tpLong:
case ClassDescriptor.FieldType.tpULong:
case ClassDescriptor.FieldType.tpDate:
Bytes.pack8(dst, BtreePage.firstKeyOffs + i * 8, key.lval);
break;
case ClassDescriptor.FieldType.tpFloat:
Bytes.packF4(dst, BtreePage.firstKeyOffs + i * 4, (float)key.dval);
break;
case ClassDescriptor.FieldType.tpDouble:
Bytes.packF8(dst, BtreePage.firstKeyOffs + i * 8, key.dval);
break;
case ClassDescriptor.FieldType.tpDecimal:
Bytes.packDecimal(dst, BtreePage.firstKeyOffs + i * 16, key.dec);
break;
case ClassDescriptor.FieldType.tpGuid:
Bytes.packGuid(dst, BtreePage.firstKeyOffs + i * 16, key.guid);
break;
default:
Debug.Assert(false, "Invalid type");
break;
}
Bytes.pack4(dst, BtreePage.firstKeyOffs + (BtreePage.maxItems - i - 1) * 4, oid);
}
public void watchdog()
{
lock (mutex)
{
while (!shutdown)
{
Monitor.Wait(mutex, storage.replicationReceiveTimeout);
if (!shutdown)
{
Bytes.pack8(txBuf, 0, ReplicationSlaveStorageImpl.REPL_PING);
for (int i = 0; i < replicas.Length; i++)
{
Send(i, txBuf);
}
}
}
}
}
public virtual void Write(long pos, byte[] buf)
{
lock (mutex)
{
if (pageTimestamps != null)
{
int pageNo = (int)(pos >> Page.pageSizeLog);
if (pageNo >= pageTimestamps.Length)
{
int newLength = pageNo >= pageTimestamps.Length * 2 ? pageNo + 1 : pageTimestamps.Length * 2;
int[] newPageTimestamps = new int[newLength];
Array.Copy(pageTimestamps, 0, newPageTimestamps, 0, pageTimestamps.Length);
pageTimestamps = newPageTimestamps;
int[] newDirtyPageTimestampMap = new int[(((newLength * 4 + Page.pageSize - 1) >> Page.pageSizeLog) + 31) >> 5];
Array.Copy(dirtyPageTimestampMap, 0, newDirtyPageTimestampMap, 0, dirtyPageTimestampMap.Length);
dirtyPageTimestampMap = newDirtyPageTimestampMap;
}
pageTimestamps[pageNo] = ++timestamp;
dirtyPageTimestampMap[pageNo >> (Page.pageSizeLog - 2 + 5)] |= 1 << ((pageNo >> (Page.pageSizeLog - 2)) & 31);
}
Bytes.pack8(txBuf, 0, pos);
Array.Copy(buf, 0, txBuf, 8, buf.Length);
if (pageTimestamps != null)
{
Bytes.pack4(txBuf, Page.pageSize + 8, timestamp);
}
for (int i = 0; i < replicas.Length; i++)
{
if (Send(i, txBuf))
{
if (ack && pos == 0 && !Receive(i, rcBuf))
{
Console.WriteLine("Failed to receive ACK from node " + replicas[i].host);
}
}
}
}
file.Write(pos, buf);
}
public int packI8(int offs, long val)
{
extend(offs + 8);
Bytes.pack8(arr, offs, val);
return(offs + 8);
}
public override void Write(long pos, byte[] buf)
{
file.Write(pos, buf);
lock (mutex)
{
if (pageTimestamps != null)
{
int pageNo = (int)(pos >> Page.pageSizeLog);
if (pageNo >= pageTimestamps.Length)
{
int newLength = pageNo >= pageTimestamps.Length * 2 ? pageNo + 1 : pageTimestamps.Length * 2;
int[] newPageTimestamps = new int[newLength];
Array.Copy(pageTimestamps, 0, newPageTimestamps, 0, pageTimestamps.Length);
pageTimestamps = newPageTimestamps;
int[] newDirtyPageTimestampMap = new int[(((newLength * 4 + Page.pageSize - 1) >> Page.pageSizeLog) + 31) >> 5];
Array.Copy(dirtyPageTimestampMap, 0, newDirtyPageTimestampMap, 0, dirtyPageTimestampMap.Length);
dirtyPageTimestampMap = newDirtyPageTimestampMap;
}
pageTimestamps[pageNo] = ++timestamp;
dirtyPageTimestampMap[pageNo >> (Page.pageSizeLog - 2 + 5)] |= 1 << ((pageNo >> (Page.pageSizeLog - 2)) & 31);
}
}
for (int i = 0; i < replicas.Length; i++)
{
if (replicas[i].socket != null)
{
byte[] data = new byte[txBuf.Length];
Bytes.pack8(data, 0, pos);
Array.Copy(buf, 0, data, 8, buf.Length);
if (pageTimestamps != null)
{
Bytes.pack4(data, Page.pageSize + 8, timestamp);
}
Parcel p = new Parcel();
p.data = data;
p.pos = pos;
p.host = i;
lock (async)
{
buffered += data.Length;
while (buffered > asyncBufSize && buffered != data.Length)
{
Monitor.Wait(async);
}
}
lock (go)
{
if (head == null)
{
head = tail = p;
}
else
{
tail = tail.next = p;
}
Monitor.Pulse(go);
}
}
}
}
public virtual void Close()
{
lock (mutex)
{
shutdown = true;
Monitor.Pulse(mutex);
}
watchdogThread.Join();
if (listenThread != null)
{
lock (mutex)
{
listening = false;
}
Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
#if NET_FRAMEWORK_20
foreach (IPAddress ip in Dns.GetHostEntry("localhost").AddressList)
#else
foreach (IPAddress ip in Dns.Resolve("localhost").AddressList)
#endif
{
try
{
s.Connect(new IPEndPoint(ip, port));
s.Close();
}
catch (SocketException) {}
}
listenThread.Join();
try
{
listenSocket.Close();
}
catch (SocketException) {}
}
for (int i = 0; i < replicas.Length; i++)
{
Thread t = replicas[i].syncThread;
if (t != null)
{
t.Join();
}
}
file.Close();
Bytes.pack8(txBuf, 0, ReplicationSlaveStorageImpl.REPL_CLOSE);
for (int i = 0; i < replicas.Length; i++)
{
if (replicas[i].socket != null)
{
try
{
replicas[i].socket.Send(txBuf);
replicas[i].socket.Close();
}
catch (SocketException) {}
}
}
if (pageTimestampFile != null)
{
pageTimestampFile.Close();
}
}
void synchronizeNewSlaveNode(int i)
{
long size = storage.DatabaseSize;
int[] syncNodeTimestamps = null;
byte[] txBuf;
if (pageTimestamps != null)
{
txBuf = new byte[12 + Page.pageSize];
byte[] psBuf = new byte[4];
if (!Receive(i, psBuf))
{
Console.WriteLine("Failed to receive page timestamps length from slave node " + replicas[i].host);
return;
}
int psSize = Bytes.unpack4(psBuf, 0);
psBuf = new byte[psSize * 4];
if (!Receive(i, psBuf))
{
Console.WriteLine("Failed to receive page timestamps from slave node " + replicas[i].host);
return;
}
syncNodeTimestamps = new int[psSize];
for (int j = 0; j < psSize; j++)
{
syncNodeTimestamps[j] = Bytes.unpack4(psBuf, j * 4);
}
}
else
{
txBuf = new byte[8 + Page.pageSize];
}
for (long pos = 0; pos < size; pos += Page.pageSize)
{
int pageNo = (int)(pos >> Page.pageSizeLog);
if (syncNodeTimestamps != null)
{
if (pageNo < syncNodeTimestamps.Length &&
pageNo < pageTimestamps.Length &&
syncNodeTimestamps[pageNo] == pageTimestamps[pageNo])
{
continue;
}
}
lock (storage)
{
lock (storage.objectCache)
{
Page pg = storage.pool.getPage(pos);
Bytes.pack8(txBuf, 0, pos);
Array.Copy(pg.data, 0, txBuf, 8, Page.pageSize);
storage.pool.unfix(pg);
if (syncNodeTimestamps != null)
{
Bytes.pack4(txBuf, Page.pageSize + 8, pageNo < pageTimestamps.Length ? pageTimestamps[pageNo] : 0);
}
}
}
if (!Send(i, txBuf))
{
return;
}
if (ack && pos == 0 && !Receive(i, rcBuf))
{
Console.WriteLine("Failed to receive ACK from node " + replicas[i].host);
return;
}
}
Bytes.pack8(txBuf, 0, ReplicationSlaveStorageImpl.REPL_SYNC);
Send(i, txBuf);
}
