66 lines
1.4 KiB
C++
66 lines
1.4 KiB
C++
/*
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* \brief Spin lock
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* \author Norman Feske
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* \date 2012-01-27
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*/
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/*
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* Copyright (C) 2012-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#include <base/env.h>
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#include <cpu/atomic.h>
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#include <base/printf.h>
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#include <spin_lock.h> /* included from 'base/src/base/lock/' */
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extern "C" {
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#include <dde_kit/spin_lock.h>
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}
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template <bool b> struct Static_assert { };
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/* specialization for successful static assertion */
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template <> struct Static_assert<true> { static void assert() { } };
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extern "C" void dde_kit_spin_lock_init(dde_kit_spin_lock *spin_lock)
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{
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/*
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* Check at compile time that the enum values defined for DDE Kit
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* correspond to those defined in 'base/src/base/lock/spin_lock.h'.
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*/
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Static_assert<(int)DDE_KIT_SPIN_LOCK_LOCKED == (int)SPINLOCK_LOCKED >::assert();
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Static_assert<(int)DDE_KIT_SPIN_LOCK_UNLOCKED == (int)SPINLOCK_UNLOCKED>::assert();
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*spin_lock = SPINLOCK_UNLOCKED;
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}
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extern "C" void dde_kit_spin_lock_lock(dde_kit_spin_lock *spin_lock)
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{
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spinlock_lock(spin_lock);
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}
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extern "C" int dde_kit_spin_lock_try_lock(dde_kit_spin_lock *spin_lock)
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{
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PERR("not implemented - will potentially block");
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spinlock_lock(spin_lock);
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/* success */
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return 0;
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}
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extern "C" void dde_kit_spin_lock_unlock(dde_kit_spin_lock *spin_lock)
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{
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spinlock_unlock(spin_lock);
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}
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