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 #ifndef ATOMIC_H 18 #define ATOMIC_H 19 20 #include "apr.h" 21 #include "apr_private.h" 22 #include "apr_atomic.h" 23 #include "apr_thread_mutex.h" 24 25 #if defined(USE_ATOMICS_GENERIC) 26 /* noop */ 27 #elif defined(__GNUC__) && defined(__STRICT_ANSI__) 28 /* force use of generic atomics if building e.g. with -std=c89, which 29 * doesn't allow inline asm */ 30 # define USE_ATOMICS_GENERIC 31 #elif HAVE_ATOMIC_BUILTINS 32 # define USE_ATOMICS_BUILTINS 33 #elif defined(SOLARIS2) && SOLARIS2 >= 10 34 # define USE_ATOMICS_SOLARIS 35 #elif defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) 36 # define USE_ATOMICS_IA32 37 #elif defined(__GNUC__) && (defined(__PPC__) || defined(__ppc__)) 38 # define USE_ATOMICS_PPC 39 #elif defined(__GNUC__) && (defined(__s390__) || defined(__s390x__)) 40 # define USE_ATOMICS_S390 41 #else 42 # define USE_ATOMICS_GENERIC 43 #endif 44 45 #endif /* ATOMIC_H */ 46