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//
// DebuggerSessionTests.cs
//
// Author:
// Greg Munn <gregm@microsoft.com>
//
// Copyright (c) 2019 Microsoft
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Threading;
using System.Threading.Tasks;
using Mono.Debugging.Client;
using NUnit.Framework;
namespace Mono.Debugging.Tests
{
[TestFixture]
public class DebuggerSessionTests
{
TestDebuggerSession session;
[TestFixtureSetUp]
public virtual void SetUp ()
{
session = new TestDebuggerSession ();
}
[TestFixtureTearDown]
public virtual void TearDown ()
{
session.Dispose ();
}
[Test]
#pragma warning disable VSTHRD200 // Use "Async" suffix for async methods
public async Task WhenQueryigBreakpoints_ThenDoNotDeadlockDispatchedMethods()
#pragma warning restore VSTHRD200 // Use "Async" suffix for async methods
{
// thread 1 cancels debugging, which triggers hot reload to clear breakpoints
// thread 2 dispatches the OnExit method which is call via Dispatch and uses the same lock
var thread1 = new TaskCompletionSource<bool> ();
Task thread2 = null;
session.HandleOnExit = () => {
// we are on a background thread via session.Dispatch
thread2 = Task.Run (() => {
var bk = session.Breakpoints;
thread1.TrySetResult (true);
});
// mimic the cause of the deadlock by waiting here for a while
// we don't really want to deadlock, just long enough that we should have
// completed the call to breakpoints first.
Thread.Sleep (1000);
thread1.TrySetResult (false);
};
session.Exit ();
var result= await thread1.Task;
await thread2;
Assert.IsTrue (result, "the call to get breakpoints should have completed first");
}
class TestDebuggerSession : DebuggerSession
{
public Action HandleOnExit;
protected override void OnAttachToProcess (long processId)
{
throw new NotImplementedException ();
}
protected override void OnContinue ()
{
throw new NotImplementedException ();
}
protected override void OnDetach ()
{
throw new NotImplementedException ();
}
protected override void OnEnableBreakEvent (BreakEventInfo eventInfo, bool enable)
{
throw new NotImplementedException ();
}
protected override void OnExit ()
{
// this is called in dispatch
HandleOnExit?.Invoke ();
//throw new NotImplementedException ();
}
protected override void OnFinish ()
{
throw new NotImplementedException ();
}
protected override ProcessInfo [] OnGetProcesses ()
{
throw new NotImplementedException ();
}
protected override Backtrace OnGetThreadBacktrace (long processId, long threadId)
{
throw new NotImplementedException ();
}
protected override ThreadInfo [] OnGetThreads (long processId)
{
throw new NotImplementedException ();
}
protected override BreakEventInfo OnInsertBreakEvent (BreakEvent breakEvent)
{
throw new NotImplementedException ();
}
protected override void OnNextInstruction ()
{
throw new NotImplementedException ();
}
protected override void OnNextLine ()
{
throw new NotImplementedException ();
}
protected override void OnRemoveBreakEvent (BreakEventInfo eventInfo)
{
throw new NotImplementedException ();
}
protected override void OnRun (DebuggerStartInfo startInfo)
{
throw new NotImplementedException ();
}
protected override void OnSetActiveThread (long processId, long threadId)
{
throw new NotImplementedException ();
}
protected override void OnStepInstruction ()
{
throw new NotImplementedException ();
}
protected override void OnStepLine ()
{
throw new NotImplementedException ();
}
protected override void OnStop ()
{
throw new NotImplementedException ();
}
protected override void OnUpdateBreakEvent (BreakEventInfo eventInfo)
{
throw new NotImplementedException ();
}
}
}
}
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