diff options
Diffstat (limited to '8/platforms/android-4/arch-x86/usr/include/sys/atomics.h')
-rw-r--r-- | 8/platforms/android-4/arch-x86/usr/include/sys/atomics.h | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/8/platforms/android-4/arch-x86/usr/include/sys/atomics.h b/8/platforms/android-4/arch-x86/usr/include/sys/atomics.h deleted file mode 100644 index 3ada8de..0000000 --- a/8/platforms/android-4/arch-x86/usr/include/sys/atomics.h +++ /dev/null @@ -1,84 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ -#ifndef _SYS_ATOMICS_H -#define _SYS_ATOMICS_H - -#include <sys/cdefs.h> -#include <sys/time.h> - -__BEGIN_DECLS - -/* Note: atomic operations that were exported by the C library didn't - * provide any memory barriers, which created potential issues on - * multi-core devices. We now define them as inlined calls to - * GCC sync builtins, which always provide a full barrier. - * - * NOTE: The C library still exports atomic functions by the same - * name to ensure ABI stability for existing NDK machine code. - * - * If you are an NDK developer, we encourage you to rebuild your - * unmodified sources against this header as soon as possible. - */ -#define __ATOMIC_INLINE__ static __inline__ __attribute__((always_inline)) - -__ATOMIC_INLINE__ int -__atomic_cmpxchg(int old, int _new, volatile int *ptr) -{ - /* We must return 0 on success */ - return __sync_val_compare_and_swap(ptr, old, _new) != old; -} - -__ATOMIC_INLINE__ int -__atomic_swap(int _new, volatile int *ptr) -{ - int prev; - do { - prev = *ptr; - } while (__sync_val_compare_and_swap(ptr, prev, _new) != prev); - return prev; -} - -__ATOMIC_INLINE__ int -__atomic_dec(volatile int *ptr) -{ - return __sync_fetch_and_sub (ptr, 1); -} - -__ATOMIC_INLINE__ int -__atomic_inc(volatile int *ptr) -{ - return __sync_fetch_and_add (ptr, 1); -} - - -int __futex_wait(volatile void *ftx, int val, const struct timespec *timeout); -int __futex_wake(volatile void *ftx, int count); - -__END_DECLS - -#endif /* _SYS_ATOMICS_H */ |