public override bool Obtain()
{
lock (this)
{
bool obtained = @lock.Obtain();
if (obtained)
{
Verify((byte)1);
}
return(obtained);
}
}
/// <summary>
/// Calls <see cref="DoBody"/> while <i>lock</i> is obtained. Blocks if lock
/// cannot be obtained immediately. Retries to obtain lock once per second
/// until it is obtained, or until it has tried ten times. Lock is released when
/// <see cref="DoBody"/> exits. </summary>
/// <exception cref="LockObtainFailedException"> if lock could not
/// be obtained </exception>
/// <exception cref="IOException"> if <see cref="Lock.Obtain()"/> throws <see cref="IOException"/> </exception>
public virtual T Run()
{
bool locked = false;
try
{
locked = @lock.Obtain(lockWaitTimeout);
return(DoBody());
}
finally
{
if (locked)
{
@lock.Dispose();
}
}
}
public override bool Obtain()
{
UninterruptableMonitor.Enter(this);
try
{
bool obtained = @lock.Obtain();
if (obtained)
{
Verify((byte)1);
}
return(obtained);
}
finally
{
UninterruptableMonitor.Exit(this);
}
}
public static void Main(string[] args)
{
if (args.Length != 7)
{
// LUCENENET specific - our wrapper console shows the correct usage
throw new ArgumentException();
//Console.WriteLine("Usage: java Lucene.Net.Store.LockStressTest myID verifierHost verifierPort lockFactoryClassName lockDirName sleepTimeMS count\n" +
// "\n" +
// " myID = int from 0 .. 255 (should be unique for test process)\n" +
// " verifierHost = hostname that LockVerifyServer is listening on\n" +
// " verifierPort = port that LockVerifyServer is listening on\n" +
// " lockFactoryClassName = primary LockFactory class that we will use\n" +
// " lockDirName = path to the lock directory (only set for Simple/NativeFSLockFactory\n" +
// " sleepTimeMS = milliseconds to pause betweeen each lock obtain/release\n" +
// " count = number of locking tries\n" +
// "\n" +
// "You should run multiple instances of this process, each with its own\n" +
// "unique ID, and each pointing to the same lock directory, to verify\n" +
// "that locking is working correctly.\n" +
// "\n" +
// "Make sure you are first running LockVerifyServer.");
//Environment.FailFast("1");
}
int arg = 0;
int myID = Convert.ToInt32(args[arg++], CultureInfo.InvariantCulture);
if (myID < 0 || myID > 255)
{
throw new ArgumentException("ID must be a unique int 0..255");
//Console.WriteLine("myID must be a unique int 0..255");
//Environment.Exit(1);
}
string verifierHost = args[arg++];
int verifierPort = Convert.ToInt32(args[arg++], CultureInfo.InvariantCulture);
string lockFactoryClassName = args[arg++];
string lockDirName = args[arg++];
int sleepTimeMS = Convert.ToInt32(args[arg++], CultureInfo.InvariantCulture);
int count = Convert.ToInt32(args[arg++], CultureInfo.InvariantCulture);
IPAddress[] addresses = Dns.GetHostAddressesAsync(verifierHost).Result;
IPAddress addr = addresses.Length > 0 ? addresses[0] : null;
Type c;
try
{
c = Type.GetType(lockFactoryClassName);
if (c == null)
{
// LUCENENET: try again, this time with the Store namespace
c = Type.GetType("Lucene.Net.Store." + lockFactoryClassName);
}
}
catch (Exception)
{
throw new IOException("unable to find LockClass " + lockFactoryClassName);
}
LockFactory lockFactory;
try
{
lockFactory = (LockFactory)Activator.CreateInstance(c);
}
catch (UnauthorizedAccessException e)
{
throw new IOException("Cannot instantiate lock factory " + lockFactoryClassName, e);
}
catch (InvalidCastException e)
{
throw new IOException("unable to cast LockClass " + lockFactoryClassName + " instance to a LockFactory", e);
}
catch (Exception e)
{
throw new IOException("InstantiationException when instantiating LockClass " + lockFactoryClassName, e);
}
DirectoryInfo lockDir = new DirectoryInfo(lockDirName);
if (lockFactory is FSLockFactory)
{
((FSLockFactory)lockFactory).SetLockDir(lockDir);
}
Console.WriteLine("Connecting to server " + addr + " and registering as client " + myID + "...");
using (Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp))
{
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, 1);
socket.Connect(verifierHost, verifierPort);
using (Stream stream = new NetworkStream(socket))
{
BinaryReader intReader = new BinaryReader(stream);
BinaryWriter intWriter = new BinaryWriter(stream);
intWriter.Write(myID);
stream.Flush();
lockFactory.LockPrefix = "test";
LockFactory verifyLF = new VerifyingLockFactory(lockFactory, stream);
Lock l = verifyLF.MakeLock("test.lock");
Random rnd = new Random();
// wait for starting gun
if (intReader.ReadInt32() != 43)
{
throw new IOException("Protocol violation");
}
for (int i = 0; i < count; i++)
{
bool obtained = false;
try
{
obtained = l.Obtain(rnd.Next(100) + 10);
}
#pragma warning disable 168
catch (LockObtainFailedException e)
#pragma warning restore 168
{
}
if (obtained)
{
Thread.Sleep(sleepTimeMS);
l.Dispose();
}
if (i % 500 == 0)
{
Console.WriteLine((i * 100.0 / count) + "% done.");
}
Thread.Sleep(sleepTimeMS);
}
}
}
Console.WriteLine("Finished " + count + " tries.");
}