repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com> | |
| 3 | * | |
| 4 | * This file is part of FFmpeg. | |
| 5 | * | |
| 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. | |
| 10 | * | |
| 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. | |
| 15 | * | |
| 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 | |
| 19 | */ | |
| 20 | ||
| 21 | #ifndef AVUTIL_ATOMIC_GCC_H | |
| 22 | #define AVUTIL_ATOMIC_GCC_H | |
| 23 | ||
| 24 | #include <stdint.h> | |
| 25 | ||
| 26 | #include "atomic.h" | |
| 27 | ||
| 28 | #define avpriv_atomic_int_get atomic_int_get_gcc | |
| 29 | static inline int atomic_int_get_gcc(volatile int *ptr) | |
| 30 | { | |
| 31 | __sync_synchronize(); | |
| 32 | return *ptr; | |
| 33 | } | |
| 34 | ||
| 35 | #define avpriv_atomic_int_set atomic_int_set_gcc | |
| 36 | static inline void atomic_int_set_gcc(volatile int *ptr, int val) | |
| 37 | { | |
| 38 | *ptr = val; | |
| 39 | __sync_synchronize(); | |
| 40 | } | |
| 41 | ||
| 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) | |
| 44 | { | |
| 45 | return __sync_add_and_fetch(ptr, inc); | |
| 46 | } | |
| 47 | ||
| 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) | |
| 51 | { | |
| 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); | |
| 56 | #else | |
| 57 | return __sync_val_compare_and_swap(ptr, oldval, newval); | |
| 58 | #endif | |
| 59 | } | |
| 60 | ||
| 61 | #endif /* AVUTIL_ATOMIC_GCC_H */ |