2 * Copyright (c) 2013, 2014 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include "ovs-atomic.h"
20 #include "ovs-thread.h"
22 #if OVS_ATOMIC_PTHREADS_IMPL
24 atomic_flag_init(volatile atomic_flag *flag_)
26 atomic_flag *flag = CONST_CAST(atomic_flag *, flag_);
28 pthread_mutex_init(&flag->mutex, NULL);
29 atomic_flag_clear(flag_);
33 atomic_flag_destroy(volatile atomic_flag *flag_)
35 atomic_flag *flag = CONST_CAST(atomic_flag *, flag_);
37 pthread_mutex_destroy(&flag->mutex);
41 atomic_flag_test_and_set(volatile atomic_flag *flag_)
43 atomic_flag *flag = CONST_CAST(atomic_flag *, flag_);
46 xpthread_mutex_lock(&flag->mutex);
49 xpthread_mutex_unlock(&flag->mutex);
55 atomic_flag_test_and_set_explicit(volatile atomic_flag *flag,
56 memory_order order OVS_UNUSED)
58 return atomic_flag_test_and_set(flag);
62 atomic_flag_clear(volatile atomic_flag *flag_)
64 atomic_flag *flag = CONST_CAST(atomic_flag *, flag_);
66 xpthread_mutex_lock(&flag->mutex);
68 xpthread_mutex_unlock(&flag->mutex);
72 atomic_flag_clear_explicit(volatile atomic_flag *flag,
73 memory_order order OVS_UNUSED)
75 return atomic_flag_clear(flag);
78 #endif /* OVS_ATOMIC_PTHREADS_IMPL */