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Diffstat (limited to 'contrib/apr/atomic/unix/builtins.c')
-rw-r--r-- | contrib/apr/atomic/unix/builtins.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/contrib/apr/atomic/unix/builtins.c b/contrib/apr/atomic/unix/builtins.c new file mode 100644 index 0000000..745acf1 --- /dev/null +++ b/contrib/apr/atomic/unix/builtins.c @@ -0,0 +1,81 @@ +/* Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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 "apr_arch_atomic.h" + +#ifdef USE_ATOMICS_BUILTINS + +APR_DECLARE(apr_status_t) apr_atomic_init(apr_pool_t *p) +{ + return APR_SUCCESS; +} + +APR_DECLARE(apr_uint32_t) apr_atomic_read32(volatile apr_uint32_t *mem) +{ + return *mem; +} + +APR_DECLARE(void) apr_atomic_set32(volatile apr_uint32_t *mem, apr_uint32_t val) +{ + *mem = val; +} + +APR_DECLARE(apr_uint32_t) apr_atomic_add32(volatile apr_uint32_t *mem, apr_uint32_t val) +{ + return __sync_fetch_and_add(mem, val); +} + +APR_DECLARE(void) apr_atomic_sub32(volatile apr_uint32_t *mem, apr_uint32_t val) +{ + __sync_fetch_and_sub(mem, val); +} + +APR_DECLARE(apr_uint32_t) apr_atomic_inc32(volatile apr_uint32_t *mem) +{ + return __sync_fetch_and_add(mem, 1); +} + +APR_DECLARE(int) apr_atomic_dec32(volatile apr_uint32_t *mem) +{ + return __sync_sub_and_fetch(mem, 1); +} + +APR_DECLARE(apr_uint32_t) apr_atomic_cas32(volatile apr_uint32_t *mem, apr_uint32_t with, + apr_uint32_t cmp) +{ + return __sync_val_compare_and_swap(mem, cmp, with); +} + +APR_DECLARE(apr_uint32_t) apr_atomic_xchg32(volatile apr_uint32_t *mem, apr_uint32_t val) +{ + __sync_synchronize(); + + return __sync_lock_test_and_set(mem, val); +} + +APR_DECLARE(void*) apr_atomic_casptr(volatile void **mem, void *with, const void *cmp) +{ + return (void*) __sync_val_compare_and_swap(mem, cmp, with); +} + +APR_DECLARE(void*) apr_atomic_xchgptr(volatile void **mem, void *with) +{ + __sync_synchronize(); + + return (void*) __sync_lock_test_and_set(mem, with); +} + +#endif /* USE_ATOMICS_BUILTINS */ |