69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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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#ifndef BIONIC_ATOMIC_INLINE_H
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#define BIONIC_ATOMIC_INLINE_H
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/*
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* Inline declarations and macros for some special-purpose atomic
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* operations. These are intended for rare circumstances where a
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* memory barrier needs to be issued inline rather than as a function
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* call.
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*
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* Most code should not use these.
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*
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* Anything that does include this file must set ANDROID_SMP to either
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* 0 or 1, indicating compilation for UP or SMP, respectively.
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*
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* Macros defined in this header:
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*
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* void ANDROID_MEMBAR_FULL(void)
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* Full memory barrier. Provides a compiler reordering barrier, and
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* on SMP systems emits an appropriate instruction.
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*/
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#if !defined(ANDROID_SMP)
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# error "Must define ANDROID_SMP before including atomic-inline.h"
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Define __ATOMIC_INLINE__ to control the inlining of all atomics
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* functions declared here. For a slight performance boost, we want
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* all of them to be always_inline
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*/
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#define __ATOMIC_INLINE__ static __inline__ __attribute__((always_inline))
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#ifdef __arm__
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# include <bionic_atomic_arm.h>
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#elif defined(__i386__)
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# include <bionic_atomic_x86.h>
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#elif defined(__mips__)
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# include <bionic_atomic_mips.h>
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#else
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# include <bionic_atomic_gcc_builtin.h>
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#endif
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#define ANDROID_MEMBAR_FULL __bionic_memory_barrier
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // BIONIC_ATOMIC_INLINE_H
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