public void Monitor_Enter_SetsLockTaken()
{
bool lockTaken = false;
var obj = new object();
Monitor.Enter(obj, ref lockTaken);
Assert.IsTrue(lockTaken);
Monitor.Exit(obj);
// The documentation does not specifies that lockTaken variable is
// set to false after Exit is called
// Assert.IsFalse(lockTaken);
}
public void Monitor_BasicRecursion()
{
var obj = new object();
Assert.IsTrue(Monitor.TryEnter(obj));
Assert.IsTrue(Monitor.TryEnter(obj));
Monitor.Exit(obj);
//Assert.IsTrue(Monitor.IsEntered(obj));
Monitor.Enter(obj);
//Assert.IsTrue(Monitor.IsEntered(obj));
Monitor.Exit(obj);
//Assert.IsTrue(Monitor.IsEntered(obj));
Monitor.Exit(obj);
//Assert.IsFalse(Monitor.IsEntered(obj));
}
public void Monitor_Exit_Invalid()
{
var obj = new object();
int valueType = 1;
AssertExtensions.Throws <ArgumentNullException>("obj", () => Monitor.Exit(null));
#if !WindowsCE
AssertExtensions.Throws <SynchronizationLockException>(() => Monitor.Exit(obj));
AssertExtensions.Throws <SynchronizationLockException>(() => Monitor.Exit(new object()));
AssertExtensions.Throws <SynchronizationLockException>(() => Monitor.Exit(valueType));
#else
AssertExtensions.Throws <ArgumentException>(() => Monitor.Exit(obj));
AssertExtensions.Throws <ArgumentException>(() => Monitor.Exit(new object()));
AssertExtensions.Throws <ArgumentException>(() => Monitor.Exit(valueType));
#endif
}
public void Monitor_DeepRecursion()
{
var obj = new object();
var hc = obj.GetHashCode();
// reduced from "(long)int.MaxValue + 2;" to something that will return in a more meaningful time
const int limit = 10000;
for (var i = 0L; i < limit; i++)
{
Assert.IsTrue(Monitor.TryEnter(obj));
}
for (var j = 0L; j < (limit - 1); j++)
{
Monitor.Exit(obj);
//Assert.IsTrue(Monitor.IsEntered(obj));
}
Monitor.Exit(obj);
//Assert.IsTrue(Monitor.IsEntered(obj));
}
public void Monitor_WaitTest()
{
var obj = new object();
var waitTests =
new Func <bool>[]
{
() => Monitor.Wait(obj, FailTimeoutMilliseconds),
() => Monitor.Wait(obj, FailTimeoutMilliseconds),
() => Monitor.Wait(obj, TimeSpan.FromMilliseconds(FailTimeoutMilliseconds)),
() => Monitor.Wait(obj, TimeSpan.FromMilliseconds(FailTimeoutMilliseconds)),
};
var t =
new Thread(() =>
{
Monitor.Enter(obj);
for (int i = 0; i < waitTests.Length; ++i)
{
Monitor.Pulse(obj);
Monitor.Wait(obj, FailTimeoutMilliseconds);
}
Monitor.Exit(obj);
});
t.IsBackground = true;
Monitor.Enter(obj);
t.Start();
int counter = 0;
foreach (var waitTest in waitTests)
{
Assert.IsTrue(waitTest(), "#" + counter.ToString());
Monitor.Pulse(obj);
counter++;
}
Monitor.Exit(obj);
}