避免Task.Run同时运行同一方法两次

private static object lockObj = new object();

public void MyMethod()
{
    lock (lockObj)
    {
        // 方法逻辑代码
    }
}

private static SemaphoreSlim semaphore = new SemaphoreSlim(1);

public async Task MyMethodAsync()
{
    await semaphore.WaitAsync();
    try
    {
        // 方法逻辑代码
    }
    finally
    {
        semaphore.Release();
    }
}

private static ConcurrentDictionary<string, bool> executingTasks = new ConcurrentDictionary<string, bool>();

public async Task MyMethodAsync()
{
    string taskId = GetTaskId(); // 根据具体情况生成唯一的任务ID
    if (executingTasks.TryAdd(taskId, true))
    {
        try
        {
            // 方法逻辑代码
        }
        finally
        {
            executingTasks.TryRemove(taskId, out _);
        }
    }
    else
    {
        // 任务已经在执行中，可以选择等待或者直接返回错误信息
    }
}