Migrate WinUSBNet code to a standalone project dependency

2026-06-15 20:00:12 +10:00 · 2025-11-01 09:28:08 +01:00
parent 1cc7a5cee4
commit 058cde0d91
25 changed files with 659 additions and 15 deletions
@@ -0,0 +1,111 @@
+// Copyright (c) 2018, Rene Lergner - @Heathcliff74xda
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+// Some of the classes and functions in this file were found online.
+// Where possible the original authors are referenced.
+
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace WPinternals.HelperClasses
+{
+    internal class AsyncAutoResetEvent
+    {
+        private readonly LinkedList<TaskCompletionSource<bool>> waiters =
+            new();
+
+        private bool isSignaled;
+
+        public AsyncAutoResetEvent(bool signaled)
+        {
+            isSignaled = signaled;
+        }
+
+        public Task<bool> WaitAsync(TimeSpan timeout)
+        {
+            return WaitAsync(timeout, CancellationToken.None);
+        }
+
+        public async Task<bool> WaitAsync(TimeSpan timeout, CancellationToken cancellationToken)
+        {
+            TaskCompletionSource<bool> tcs;
+
+            lock (waiters)
+            {
+                if (isSignaled)
+                {
+                    isSignaled = false;
+                    return true;
+                }
+                else if (timeout == TimeSpan.Zero)
+                {
+                    return isSignaled;
+                }
+                else
+                {
+                    tcs = new TaskCompletionSource<bool>();
+                    waiters.AddLast(tcs);
+                }
+            }
+
+            Task winner = await Task.WhenAny(tcs.Task, Task.Delay(timeout, cancellationToken));
+            if (winner == tcs.Task)
+            {
+                // The task was signaled.
+                return true;
+            }
+            else
+            {
+                // We timed-out; remove our reference to the task.
+                // This is an O(n) operation since waiters is a LinkedList<T>.
+                lock (waiters)
+                {
+                    bool removed = waiters.Remove(tcs);
+                    System.Diagnostics.Debug.Assert(removed);
+                    return false;
+                }
+            }
+        }
+
+        public void Set()
+        {
+            TaskCompletionSource<bool> toRelease = null;
+
+            lock (waiters)
+            {
+                if (waiters.Count > 0)
+                {
+                    // Signal the first task in the waiters list.
+                    toRelease = waiters.First.Value;
+                    waiters.RemoveFirst();
+                }
+                else if (!isSignaled)
+                {
+                    // No tasks are pending
+                    isSignaled = true;
+                }
+            }
+
+            toRelease?.SetResult(true);
+        }
+    }
+}