65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "apr_arch_atomic.h"
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#ifdef USE_ATOMICS_BUILTINS
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APR_DECLARE(apr_uint64_t) apr_atomic_read64(volatile apr_uint64_t *mem)
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{
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return *mem;
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}
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APR_DECLARE(void) apr_atomic_set64(volatile apr_uint64_t *mem, apr_uint64_t val)
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{
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*mem = val;
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}
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APR_DECLARE(apr_uint64_t) apr_atomic_add64(volatile apr_uint64_t *mem, apr_uint64_t val)
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{
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return __sync_fetch_and_add(mem, val);
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}
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APR_DECLARE(void) apr_atomic_sub64(volatile apr_uint64_t *mem, apr_uint64_t val)
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{
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__sync_fetch_and_sub(mem, val);
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}
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APR_DECLARE(apr_uint64_t) apr_atomic_inc64(volatile apr_uint64_t *mem)
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{
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return __sync_fetch_and_add(mem, 1);
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}
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APR_DECLARE(int) apr_atomic_dec64(volatile apr_uint64_t *mem)
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{
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return __sync_sub_and_fetch(mem, 1);
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}
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APR_DECLARE(apr_uint64_t) apr_atomic_cas64(volatile apr_uint64_t *mem, apr_uint64_t with,
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apr_uint64_t cmp)
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{
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return __sync_val_compare_and_swap(mem, cmp, with);
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}
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APR_DECLARE(apr_uint64_t) apr_atomic_xchg64(volatile apr_uint64_t *mem, apr_uint64_t val)
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{
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__sync_synchronize();
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return __sync_lock_test_and_set(mem, val);
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}
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#endif /* USE_ATOMICS_BUILTINS */
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