Release 6.5.1 The Tornado Authors May 22, 2025CONTENTS 1 Quick links 3 2 Hello, world 5 3 Threads and WSGI 7 4 asyncio Integration 9 5 Installation 11 6 Documentation 13 6.1 User’s guide . . simple chat room. 5Tornado Documentation, Release 6.5.1 6 Chapter 2. Hello, worldCHAPTER THREE THREADS AND WSGI Tornado is different from most Python web frameworks. It is not based on WSGI, and it is general, Tornado code is not thread-safe. The only method in Tornado that is safe to call from other threads is IOLoop.add_callback. You can also use IOLoop.run_in_executor to asynchronously run a blocking

that see this simple chat room [https://github.com/tornadoweb/tornado/tree/stable/demos/chat]. Threads and WSGI Tornado is different from most Python web frameworks. It is not based on WSGI [https://wsgi general, Tornado code is not thread-safe. The only method in Tornado that is safe to call from other threads is IOLoop.add_callback. You can also use IOLoop.run_in_executor to asynchronously run a blocking [https://pypi.org/project/pycares/] is an alternative non-blocking DNS resolver that can be used when threads are not appropriate. Platforms: Tornado is designed for Unix-like platforms, with best performance

不同的文件；另一个解决方案是一 次运行一个测试。 如果你不希望测试并行运行，或者想要更加精确的控制线程的数量，可以传递 --test-threads 参数和希望使用线程的数量给测试二进制文件。例如： $ cargo test -- --test-threads=1 这里将测试线程设置为 1，告诉程序不要使用任何并行机制。这也会比并行运行花费更多时 间，不过在有共享的状态时，测试就不会潜在的相互干扰了。 在大部分现代操作系统中，已执行程序的代码在一个进程（process）中运行，操作系统则会 负责管理多个进程。在程序内部，也可以拥有多个同时运行的独立部分。这些运行这些独立部 分的功能被称为线程（threads）。例如，web 服务端可以有多个线程以便可以同时响应多个请 求。 将程序中的计算拆分进多个线程可以改善性能，因为程序可以同时进行多个任务，不过这也会 增加复杂性。因为线程是同时运行的，所以无 thread::spawn 在一个 新线程中运行这个闭包，所以可以在新线程中访问 v。然而当编译这个例子时，会得到如下错 误： $ cargo run Compiling threads v0.1.0 (file:///projects/threads) error[E0373]: closure may outlive the current function, but it borrows `v`, which