private static void AsyncOneManyLockTest()
{
AsyncOneManyLock m_lock = new AsyncOneManyLock();
Task.Run(async() =>
{
await m_lock.WaitAsync(OneManyMode.Shared);
Console.WriteLine("I'm a reader1");
Thread.Sleep(3000);
m_lock.Release();
});
Task.Run(async() =>
{
await m_lock.WaitAsync(OneManyMode.Shared);
Console.WriteLine("I'm a reader2");
Thread.Sleep(3000);
m_lock.Release();
});
Thread.Sleep(1000);
Task.Run(async() =>
{
await m_lock.WaitAsync(OneManyMode.Exclusive);
Console.WriteLine("I'm a writer");
Thread.Sleep(3000);
m_lock.Release();
});
Thread.Sleep(500);
Task.Run(async() =>
{
await m_lock.WaitAsync(OneManyMode.Shared);
Console.WriteLine("I'm a reader3");
Thread.Sleep(3000);
m_lock.Release();
});
Task.Run(async() =>
{
await m_lock.WaitAsync(OneManyMode.Shared);
Console.WriteLine("I'm a reader4");
Thread.Sleep(3000);
m_lock.Release();
});
}
private static void OneManyDemo()
{
var asyncLock = new AsyncOneManyLock();
List <Task> tasks = new List <Task>();
for (int x = 0; x < 5; x++)
{
var y = x;
tasks.Add(Task.Run(async() =>
{
var mode = (y < 3) ? OneManyMode.Shared : OneManyMode.Exclusive;
Console.WriteLine("ThreadID={0}, OpID={1}, await for {2} access",
Environment.CurrentManagedThreadId, y, mode);
var t = asyncLock.WaitAsync(mode);
await t;
Console.WriteLine("ThreadID={0}, OpID={1}, got access at {2}",
Environment.CurrentManagedThreadId, y, DateTime.Now.ToLongTimeString());
Thread.Sleep(5000);
asyncLock.Release();
}));
Thread.Sleep(200);
}
Task.WaitAll(tasks.ToArray());
Console.WriteLine("All operations done");
Console.ReadLine();
}
private static async Task AccessResourceViaAsyncSynchronization(AsyncOneManyLock asyncLock)
{
// Execute whatever code you want here...
// Pass OneManyMode.Exclusive or OneManyMode.Shared depending on the concurrent access you need
await asyncLock.WaitAsync(OneManyMode.Shared); // Request shared access to a resource via its lock
// When we get here, no threads are writing to the resource; other threads may be reading
// Read from the resource...
// When done accessing resource, relinquish lock so other code can access the resource
asyncLock.Release();
// Execute whatever code you want here...
}