2 * Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef AVUTIL_ATOMIC_GCC_H
22 #define AVUTIL_ATOMIC_GCC_H
28 #define avpriv_atomic_int_get atomic_int_get_gcc
29 static inline int atomic_int_get_gcc(volatile int *ptr)
35 #define avpriv_atomic_int_set atomic_int_set_gcc
36 static inline void atomic_int_set_gcc(volatile int *ptr, int val)
42 #define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_gcc
43 static inline int atomic_int_add_and_fetch_gcc(volatile int *ptr, int inc)
45 return __sync_add_and_fetch(ptr, inc);
48 #define avpriv_atomic_ptr_cas atomic_ptr_cas_gcc
49 static inline void *atomic_ptr_cas_gcc(void * volatile *ptr,
50 void *oldval, void *newval)
52 #ifdef __ARMCC_VERSION
53 // armcc will throw an error if ptr is not an integer type
54 volatile uintptr_t *tmp = (volatile uintptr_t*)ptr;
55 return (void*)__sync_val_compare_and_swap(tmp, oldval, newval);
57 return __sync_val_compare_and_swap(ptr, oldval, newval);
61 #endif /* AVUTIL_ATOMIC_GCC_H */