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| Rev | Author | Line No. | Line |
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| 4349 | Serge | 1 | /* |
| 2 | * Copyright (c) 2012 Ronald S. Bultje |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | #ifndef AVUTIL_ATOMIC_GCC_H |
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| 22 | #define AVUTIL_ATOMIC_GCC_H |
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| 23 | |||
| 24 | #include |
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| 25 | |||
| 26 | #include "atomic.h" |
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| 27 | |||
| 28 | #define avpriv_atomic_int_get atomic_int_get_gcc |
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| 29 | static inline int atomic_int_get_gcc(volatile int *ptr) |
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| 30 | { |
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| 31 | __sync_synchronize(); |
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| 32 | return *ptr; |
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| 33 | } |
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| 34 | |||
| 35 | #define avpriv_atomic_int_set atomic_int_set_gcc |
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| 36 | static inline void atomic_int_set_gcc(volatile int *ptr, int val) |
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| 37 | { |
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| 38 | *ptr = val; |
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| 39 | __sync_synchronize(); |
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| 40 | } |
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| 41 | |||
| 42 | #define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_gcc |
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| 43 | static inline int atomic_int_add_and_fetch_gcc(volatile int *ptr, int inc) |
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| 44 | { |
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| 45 | return __sync_add_and_fetch(ptr, inc); |
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| 46 | } |
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| 47 | |||
| 48 | #define avpriv_atomic_ptr_cas atomic_ptr_cas_gcc |
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| 49 | static inline void *atomic_ptr_cas_gcc(void * volatile *ptr, |
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| 50 | void *oldval, void *newval) |
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| 51 | { |
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| 52 | #ifdef __ARMCC_VERSION |
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| 53 | // armcc will throw an error if ptr is not an integer type |
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| 54 | volatile uintptr_t *tmp = (volatile uintptr_t*)ptr; |
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| 55 | return (void*)__sync_val_compare_and_swap(tmp, oldval, newval); |
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| 56 | #else |
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| 57 | return __sync_val_compare_and_swap(ptr, oldval, newval); |
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| 58 | #endif |
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| 59 | } |
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| 60 | |||
| 61 | #endif /* AVUTIL_ATOMIC_GCC_H */ |