genode/base-nova/include/base/sleep.h
2013-01-10 21:44:47 +01:00

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/*
* \brief Lay back and relax
* \author Norman Feske
* \author Alexander Boettcher
* \date 2010-02-01
*/
/*
* Copyright (C) 2010-2013 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
*/
#ifndef _INCLUDE__BASE__SLEEP_H_
#define _INCLUDE__BASE__SLEEP_H_
/* Genode includes */
#include <base/thread.h>
/* NOVA includes */
#include <nova/syscalls.h>
#include <nova/util.h>
namespace Genode {
__attribute__((noreturn)) inline void sleep_forever()
{
using namespace Nova;
Thread_base *myself = Thread_base::myself();
addr_t sem = myself ? myself->tid().exc_pt_sel + SM_SEL_EC : SM_SEL_EC;
while (1) {
if (Nova::sm_ctrl(sem, SEMAPHORE_DOWNZERO))
nova_die();
}
}
}
#endif /* _INCLUDE__BASE__SLEEP_H_ */