void Request_profile_baseline(ThreadIDFunctionIDMap tidfidmap, out Int32 hr)
{
var snapshot = NativeMethods.GetProfileWithRelease(out hr);
Assert.GreaterOrEqual(hr, 0);
Assert.IsNotNull(snapshot, "snapshot is null");
Assert.Greater(snapshot.Length, 0, "snapshot.Length count is <= 0");
foreach (var snap in snapshot)
{
//GetSnapshot will never return a null for the FunctionIDs
Assert.IsNotNull(snap.FunctionIDs, "snapshot has a null list of function ids");
Assert.AreNotEqual(snap.ThreadId, ThreadID.Zero, "ThreadId should be non-zero");
if (snap.ErrorCode < 0)
{
Assert.AreEqual(snap.FunctionIDs.Length, 0, "non empty list of function ids was return with an error code.");
}
else
{
Assert.AreNotEqual(snap.FunctionIDs.Length, 0, "empty list of function ids was return with an successful error code.");
if (snap.ThreadId != ThreadID.Zero)
{
tidfidmap[snap.ThreadId] = new FunctionIDCollection(snap.FunctionIDs);
}
}
}
}
public void RequestProfile_VerifyThreadIDs()
{
//create a number of thread that recurses to a specified depth and block on a ManualResetEvent... this thread should save their threadids (GetCurrentExecutionEngineThreadId)
//GetSnapshot on this thread
//Set ManualResetEvent and allow the thread/task to complete/terminate
//verify that all of the recurse thread ids are in the snapshot
//call ShutdownThreadProfiler.
using (var RecurseEvent = new ManualResetEventSlim(false))
{
const int ThreadsToCreate = 10;
const int FramesPerThread = 1;
int threadsWaiting = 0;
var RecurseThreadIds = new ConcurrentBag <UIntPtr>();
RecurseEvent.Reset();
Thread[] threads = new Thread[ThreadsToCreate];
for (int i = 0; i != threads.Length; ++i)
{
threads[i] = new Thread(() => RecurseFunc(FramesPerThread, ref threadsWaiting, RecurseThreadIds, RecurseEvent), 4096 * 16)
{
IsBackground = true
};
threads[i].Start();
}
while (threadsWaiting != ThreadsToCreate)
{
Thread.Yield();
}
var tidfidmap = new ThreadIDFunctionIDMap();
Request_profile_baseline(tidfidmap, out Int32 hr);
//free all of the recurse threads to terminate
RecurseEvent.Set();
for (int i = 0; i != threads.Length; ++i)
{
threads[i].Join(); threads[i] = null;
}
CollectionAssert.IsSubsetOf(RecurseThreadIds, tidfidmap.Keys);
var fids = new FunctionIDCollection();
foreach (var pr in tidfidmap)
{
fids.AddRange(pr.Value);
}
var FidTypeMethodNames = Request_function_names_baseline(fids);
Assert.IsNotNull(FidTypeMethodNames);
Assert.Greater(FidTypeMethodNames.Length, 0);
foreach (var tid in RecurseThreadIds)
{
int matchingMethods = 0;
foreach (var fid in tidfidmap[tid])
{
foreach (var ftm in FidTypeMethodNames)
{
if (ftm.FunctionID == fid)
{
if (ftm.MethodName.Equals("RecurseFunc"))
{
++matchingMethods;
}
break;
}
}
}
Assert.AreEqual(matchingMethods, FramesPerThread);
}
NativeMethods.ShutdownThreadProfiler();
}
}
