public static void Perf_AcquiringLock_DifferentResources()
{
var connectionProvider = ConnectionUtils.GetConnectionProvider();
var lockTimeout = TimeSpan.Zero;
const int concurrentQueries = 1000;
var successFullThreads = RunConcurrent(concurrentQueries,
lockTimeout,
connectionProvider,
x => x.ToString());
Assert.Equal(concurrentQueries, successFullThreads);
}
public static void Perf_AcquiringLock_SameResource()
{
var connectionProvider = ConnectionUtils.GetConnectionProvider();
var lockTimeout = TimeSpan.FromMilliseconds(1000);
const int concurrentQueries = 1000;
var threads = RunConcurrent(concurrentQueries,
lockTimeout,
connectionProvider,
x => "oneLockToRuleThemAll");
Assert.Equal(concurrentQueries, threads);
}
public static void Ctor_ActuallyGrantsExclusiveLock()
{
const int numberOfParallelJobs = 1000;
var connectionProvider = ConnectionUtils.GetConnectionProvider();
var parallelOptions = new ParallelOptions {
MaxDegreeOfParallelism = numberOfParallelJobs
};
var i = 0;
Parallel.For(0, numberOfParallelJobs, parallelOptions, _ =>
{
using (new DistributedLock("increment_test", TimeSpan.FromSeconds(1), connectionProvider))
{
// prevent compiler/jit from reordering
var temp = Volatile.Read(ref i);
Volatile.Write(ref i, temp + 1);
}
});
Assert.Equal(numberOfParallelJobs, i);
}