public void MutexAcquiredWhenRunningServer()
{
var mutexName = Guid.NewGuid().ToString("N");
var host = new Mock <IClientConnectionHost>(MockBehavior.Strict);
host
.Setup(x => x.CreateListenTask(It.IsAny <CancellationToken>()))
.Returns(() =>
{
// Use a thread instead of Task to guarantee this code runs on a different
// thread and we can validate the mutex state.
var source = new TaskCompletionSource <bool>();
var thread = new Thread(_ =>
{
Mutex mutex;
Assert.True(Mutex.TryOpenExisting(mutexName, out mutex));
Assert.False(mutex.WaitOne(millisecondsTimeout: 0));
source.SetResult(true);
});
// Synchronously wait here. Don't returned a Task value because we need to
// ensure the above check completes before the server hits a timeout and
// releases the mutex.
thread.Start();
source.Task.Wait();
return(new TaskCompletionSource <IClientConnection>().Task);
});
var result = VBCSCompiler.Run(mutexName, host.Object, keepAlive: TimeSpan.FromSeconds(1));
Assert.Equal(CommonCompiler.Succeeded, result);
}
internal static ServerData CreateServer(
string pipeName = null,
TimeSpan?timeout = null,
ICompilerServerHost compilerServerHost = null)
{
pipeName = pipeName ?? Guid.NewGuid().ToString();
compilerServerHost = compilerServerHost ?? new DesktopCompilerServerHost(DefaultClientDirectory, DefaultSdkDirectory);
var taskSource = new TaskCompletionSource <ServerStats>();
var cts = new CancellationTokenSource();
var thread = new Thread(_ =>
{
var listener = new TestableDiagnosticListener();
try
{
var clientConnectionHost = new NamedPipeClientConnectionHost(compilerServerHost, pipeName);
var mutexName = BuildProtocolConstants.GetServerMutexName(pipeName);
VBCSCompiler.Run(
mutexName,
clientConnectionHost,
listener,
timeout ?? TimeSpan.FromMilliseconds(-1),
cts.Token);
}
finally
{
var serverStats = new ServerStats(connections: listener.ConnectionCount, completedConnections: listener.CompletedCount);
taskSource.SetResult(serverStats);
}
});
thread.Start();
return(new ServerData(cts, taskSource.Task, pipeName));
}
private Task CreateServerCore(string pipeName)
{
Action action = () =>
{
var compilerServerHost = new DesktopCompilerServerHost(ClientDirectory, SdkDirectory);
var clientConnectionHost = new NamedPipeClientConnectionHost(compilerServerHost, pipeName);
var mutexName = $"{pipeName}.server";
VBCSCompiler.Run(mutexName, clientConnectionHost, TimeSpan.FromSeconds(3));
};
var task = new Task(action, TaskCreationOptions.LongRunning);
task.Start(TaskScheduler.Default);
return(task);
}
public void MutexStopsServerStarting()
{
var mutexName = Guid.NewGuid().ToString("N");
bool holdsMutex;
using (var mutex = new Mutex(initiallyOwned: true,
name: mutexName,
createdNew: out holdsMutex))
{
Assert.True(holdsMutex);
try
{
var host = new Mock <IClientConnectionHost>(MockBehavior.Strict);
var result = VBCSCompiler.Run(mutexName, host.Object, keepAlive: null);
Assert.Equal(CommonCompiler.Failed, result);
}
finally
{
mutex.ReleaseMutex();
}
}
}