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


.. _program_listing_file_kernel_timer.hpp:

Program Listing for File timer.hpp
==================================

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

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

.. code-block:: cpp

   /* SPDX-License-Identifier: BSD-2-Clause */
   #pragma once
   #include <frg/pairing_heap.hpp>
   #include <kernel/wait.hpp>
   
   namespace Gaia {
   
   struct Timer : public Waitable {
     frg::pairing_heap_hook<Timer> hook;
   
     Timer(void (*callback)(), uint64_t ms) : callback(callback), timeout(ms) {}
   
     enum {
       DISABLED,
       PENDING,
       CANCELLED,
       COMPLETED,
     } state;
   
     void (*callback)();
     uint64_t deadline = 0, timeout = 0;
   };
   
   Result<Void, Error> timer_enqueue(Timer *timer);
   
   void timer_cancel(Timer *timer);
   
   void timer_interrupt();
   
   } // namespace Gaia