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/*
* Copyright (c) 2013 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <config.h>
#include "ovs-atomic.h"
#include "ovs-thread.h"
#if OVS_ATOMIC_PTHREADS_IMPL
bool
atomic_flag_test_and_set(volatile atomic_flag *flag_)
{
atomic_flag *flag = CONST_CAST(atomic_flag *, flag_);
bool old_value;
xpthread_mutex_lock(&flag->mutex);
old_value = flag->b;
flag->b = true;
xpthread_mutex_unlock(&flag->mutex);
return old_value;
}
bool
atomic_flag_test_and_set_explicit(volatile atomic_flag *flag,
memory_order order OVS_UNUSED)
{
return atomic_flag_test_and_set(flag);
}
void
atomic_flag_clear(volatile atomic_flag *flag_)
{
atomic_flag *flag = CONST_CAST(atomic_flag *, flag_);
xpthread_mutex_lock(&flag->mutex);
flag->b = false;
xpthread_mutex_unlock(&flag->mutex);
}
void
atomic_flag_clear_explicit(volatile atomic_flag *flag,
memory_order order OVS_UNUSED)
{
return atomic_flag_clear(flag);
}
#endif /* OVS_ATOMIC_PTHREADS_IMPL */
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