public static void TestLocks(Action <TimeSpan, bool, string> logEntry)
{
ILocker[] lockStyles =
{
new NoLock(),
new InterlockedSpinLock(),
new MonitorLock(),
new MutexLock(),
new SemaphoreSlimLock(),
new SemaphoreLock(),
new ReaderWriterLockSlimLock()
};
const int count = 1000000;
foreach (var ls in lockStyles)
{
using (ILocker theLock = ls)
{
for (int mode = 0; mode < 2; mode++)
{
bool exclusive = (mode == 0);
var sw = Stopwatch.StartNew();
CountdownEvent startGate = new CountdownEvent(2);
Action work = () => {
startGate.Signal();
for (int n = 0; n < count; n++)
{
theLock.EnterLock(exclusive);
counter++; // "the work"
theLock.ExitLock();
}
};
// Block this thread on the results.
Task.WaitAll(
Task.Run(work),
Task.Run(work));
sw.Stop();
logEntry?.Invoke(sw.Elapsed, exclusive, theLock.GetType().Name);
}
}
}
}
public void ThreadX()
{
long res = 0;
for (int i = 0; i < 10000; i++)
{
_locker.Enter();
Interlocked.Increment(ref concurrent);
for (int z = 0; z < 1000; z++)
{
res += res;
}
if (concurrent > 1)
{
Console.WriteLine("{0} concurrency issues!", _locker.GetType().Name);
}
Interlocked.Decrement(ref concurrent);
_locker.Exit();
}
}
