private void Test(Action<IProjectCacheHostService, ProjectId, ICachedObjectOwner, ObjectReference> action)
{
// Putting cacheService.CreateStrongReference in a using statement
// creates a temporary local that isn't collected in Debug builds
// Wrapping it in a lambda allows it to get collected.
var cacheService = new ProjectCacheService(null, int.MaxValue);
var projectId = ProjectId.CreateNewId();
var owner = new Owner();
var instance = new ObjectReference();
action(cacheService, projectId, owner, instance);
}
private void StopObservingAndWaitForReferenceToGo(ObjectReference observed, int delay = 0)
{
// stop observing it and let GC reclaim it
observed.Strong = null;
DateTime start = DateTime.UtcNow;
TimeSpan maximumTimeToWait = TimeSpan.FromSeconds(120);
while (observed.Weak.IsAlive && (DateTime.UtcNow - start) < maximumTimeToWait)
{
GC.Collect();
GC.WaitForPendingFinalizers();
}
const int TimerPrecision = 30;
var actualTimePassed = DateTime.UtcNow - start + TimeSpan.FromMilliseconds(TimerPrecision);
Assert.True(observed.Weak.Target == null,
string.Format("Target object ({0}) was not collected after {1} ms", observed.Weak.Target, actualTimePassed));
}
private void StopObservingAndWaitForReferenceToGo(ObjectReference observed, int delay = 0, string dumpFileName = null)
{
// stop observing it and let GC reclaim it
observed.Strong = null;
DateTime start = DateTime.UtcNow;
TimeSpan maximumTimeToWait = TimeSpan.FromSeconds(120);
while (observed.Weak.IsAlive && (DateTime.UtcNow - start) < maximumTimeToWait)
{
GC.Collect();
GC.WaitForPendingFinalizers();
}
const int TimerPrecision = 30;
var actualTimePassed = DateTime.UtcNow - start + TimeSpan.FromMilliseconds(TimerPrecision);
var isTargetCollected = observed.Weak.Target == null;
if (!isTargetCollected && !string.IsNullOrEmpty(dumpFileName))
{
if (string.Compare(Path.GetExtension(dumpFileName), ".dmp", StringComparison.OrdinalIgnoreCase) != 0)
{
dumpFileName += ".dmp";
}
DumpProcess(dumpFileName);
Assert.True(false, $"Target object not collected. Process dump saved to '{dumpFileName}'");
}
Assert.True(isTargetCollected,
string.Format("Target object ({0}) was not collected after {1} ms", observed.Weak.Target, actualTimePassed));
}
private void Add(WeakList<object> list, ObjectReference<C> value)
{
value.UseReference(r => list.Add(r));
}
private void Add(WeakList<object> list, ObjectReference value)
{
list.Add(value.Strong);
}