:github_url: https://github.com/nyx-org/gaia


.. _program_listing_file_kernel_wait.hpp:

Program Listing for File wait.hpp
=================================

|exhale_lsh| :ref:`Return to documentation for file <file_kernel_wait.hpp>` (``kernel/wait.hpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   /* SPDX-License-Identifier: BSD-2-Clause */
   #pragma once
   
   #include "kernel/sched.hpp"
   #include <lib/list.hpp>
   #include <lib/spinlock.hpp>
   
   namespace Gaia {
   
   struct Waitq {
     Spinlock lock;
     List<Thread, &Thread::wait_link> waiters;
   
     Result<Void, Error> await(uint64_t timeout);
   
     Result<Void, Error> wake(int n);
   };
   
   struct Waitable {
     Waitq wq;
     auto trigger_event(int n = -1) { return wq.wake(n); }
     auto await_event(uint64_t timeout) { return wq.await(timeout); }
   };
   
   } // namespace Gaia