Remove the idle process.

[bertos.git] / bertos / kern / idle.c

diff --git a/bertos/kern/idle.c b/bertos/kern/idle.c
deleted file mode 100644 (file)
index 592d17b..0000000
--- a/bertos/kern/idle.c
+++ /dev/null
@@ -1,84 +0,0 @@
-/**
- * \file
- * <!--
- * This file is part of BeRTOS.
- *
- * Bertos is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * As a special exception, you may use this file as part of a free software
- * library without restriction.  Specifically, if other files instantiate
- * templates or use macros or inline functions from this file, or you compile
- * this file and link it with other files to produce an executable, this
- * file does not by itself cause the resulting executable to be covered by
- * the GNU General Public License.  This exception does not however
- * invalidate any other reasons why the executable file might be covered by
- * the GNU General Public License.
- *
- * Copyright 2008 Bernie Innocenti <bernie@codewiz.org>
- * -->
- *
- * \brief Idle loop for preemptive scheduling
- *
- * \version $Id$
- * \author Bernie Innocenti <bernie@codewiz.org>
- */
-
-#include "idle.h"
-#include "proc.h"
-
-#include <cpu/power.h> // cpu_relax()
-#include <cfg/module.h>
-#include <cpu/types.h> // INT_MIN
-
-#include <kern/proc_p.h>
-
-struct Process *idle_proc;
-
-static PROC_DEFINE_STACK(idle_stack, KERN_MINSTACKSIZE);
-
-/**
- * The idle process
- *
- * This process never dies and never sleeps.  It's also quite lazy, apathic
- * and sometimes even a little antisocial.
- *
- * Having an idle process costs us some stack space, but simplifies the
- * interrupt-driven preemption logic because there is always a user
- * context to which we can return.
- *
- * The idle process is not required for cooperative task switching.
- */
-static NORETURN void idle(void)
-{
-       for (;;)
-       {
-               CPU_IDLE;
-               proc_switch();
-       }
-}
-
-void idle_init(void)
-{
-       /*
-        * Idle will be added to the ProcReadyList, but immediately removed
-        * after the first cpu_relax() execution.
-        *
-        * XXX: it would be better to never add idle_proc to the ProcReadyList,
-        * e.g., changing the prototype of proc_new() (or introducing a
-        * proc_new_nostart()) to allow the creation of "sleeping" tasks.
-        */
-       idle_proc = proc_new(idle, NULL, sizeof(idle_stack), idle_stack);
-       proc_setPri(idle_proc, INT_MIN);
-}