1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 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 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 BIONIC_ATOMIC_INLINE_H 18 #define BIONIC_ATOMIC_INLINE_H 19 20 /* 21 * Inline declarations and macros for some special-purpose atomic 22 * operations. These are intended for rare circumstances where a 23 * memory barrier needs to be issued inline rather than as a function 24 * call. 25 * 26 * Macros defined in this header: 27 * 28 * void ANDROID_MEMBAR_FULL() 29 * Full memory barrier. Provides a compiler reordering barrier, and 30 * on SMP systems emits an appropriate instruction. 31 */ 32 33 #if !defined(ANDROID_SMP) 34 # error "Must define ANDROID_SMP before including atomic-inline.h" 35 #endif 36 37 #ifdef __cplusplus 38 extern "C" { 39 #endif 40 41 /* Define __ATOMIC_INLINE__ to control the inlining of all atomics 42 * functions declared here. For a slight performance boost, we want 43 * all of them to be always_inline 44 */ 45 #define __ATOMIC_INLINE__ static __inline__ __attribute__((always_inline)) 46 47 #if defined(__arm__) 48 # include "bionic_atomic_arm.h" 49 #elif defined(__aarch64__) 50 # include "bionic_atomic_arm64.h" 51 #elif defined(__i386__) 52 # include "bionic_atomic_x86.h" 53 #elif defined(__mips__) 54 # include "bionic_atomic_mips.h" 55 #else 56 # include "bionic_atomic_gcc_builtin.h" 57 #endif 58 59 #define ANDROID_MEMBAR_FULL __bionic_memory_barrier 60 61 #ifdef __cplusplus 62 } // extern "C" 63 #endif 64 65 #endif // BIONIC_ATOMIC_INLINE_H 66
