1/* Licensed to the Apache Software Foundation (ASF) under one or more 2 * contributor license agreements. See the NOTICE file distributed with 3 * this work for additional information regarding copyright ownership. 4 * The ASF licenses this file to You under the Apache License, Version 2.0 5 * (the "License"); you may not use this file except in compliance with 6 * the License. You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 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. 15 */ 16 17#include "apr.h" 18#include "apr_atomic.h" 19 20#include <stdlib.h> 21 22APR_DECLARE(apr_status_t) apr_atomic_init(apr_pool_t *pool) 23{ 24 return APR_SUCCESS; 25} 26 27APR_DECLARE(apr_uint32_t) apr_atomic_add32(volatile apr_uint32_t *mem, apr_uint32_t val) 28{ 29 return atomic_xchgadd((unsigned long *)mem,(unsigned long)val); 30} 31 32APR_DECLARE(void) apr_atomic_sub32(volatile apr_uint32_t *mem, apr_uint32_t val) 33{ 34 atomic_sub((unsigned long *)mem,(unsigned long)val); 35} 36 37APR_DECLARE(apr_uint32_t) apr_atomic_inc32(volatile apr_uint32_t *mem) 38{ 39 return atomic_xchgadd((unsigned long *)mem, 1); 40} 41 42APR_DECLARE(void) apr_atomic_set32(volatile apr_uint32_t *mem, apr_uint32_t val) 43{ 44 *mem = val; 45} 46 47APR_DECLARE(apr_uint32_t) apr_atomic_read32(volatile apr_uint32_t *mem) 48{ 49 return *mem; 50} 51 52APR_DECLARE(apr_uint32_t) apr_atomic_cas32(volatile apr_uint32_t *mem, apr_uint32_t with,apr_uint32_t cmp) 53{ 54 return atomic_cmpxchg((unsigned long *)mem,(unsigned long)cmp,(unsigned long)with); 55} 56 57APR_DECLARE(apr_uint32_t) apr_atomic_xchg32(volatile apr_uint32_t *mem, apr_uint32_t val) 58{ 59 return atomic_xchg((unsigned long *)mem,(unsigned long)val); 60} 61 62APR_DECLARE(int) apr_atomic_dec32(volatile apr_uint32_t *mem) 63{ 64 return (atomic_xchgadd((unsigned long *)mem, 0xFFFFFFFF) - 1); 65} 66 67APR_DECLARE(void *) apr_atomic_casptr(volatile void **mem, void *with, const void *cmp) 68{ 69 return (void*)atomic_cmpxchg((unsigned long *)mem,(unsigned long)cmp,(unsigned long)with); 70} 71 72APR_DECLARE(void*) apr_atomic_xchgptr(volatile void **mem, void *with) 73{ 74 return (void*)atomic_xchg((unsigned long *)mem,(unsigned long)with); 75} 76