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https://github.com/FFmpeg/FFmpeg.git
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dbc932e745
This reverts commit faa9d29829.
This change became superfluous when support for C11 atomics was introduced.
Reverting it will make the removal of this implementation in an upcoming
merge conflict free.
Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/*
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* Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_ATOMIC_GCC_H
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#define AVUTIL_ATOMIC_GCC_H
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#include <stdint.h>
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#include "atomic.h"
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#define avpriv_atomic_int_get atomic_int_get_gcc
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static inline int atomic_int_get_gcc(volatile int *ptr)
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{
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__sync_synchronize();
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return *ptr;
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}
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#define avpriv_atomic_int_set atomic_int_set_gcc
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static inline void atomic_int_set_gcc(volatile int *ptr, int val)
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{
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*ptr = val;
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__sync_synchronize();
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}
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#define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_gcc
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static inline int atomic_int_add_and_fetch_gcc(volatile int *ptr, int inc)
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{
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return __sync_add_and_fetch(ptr, inc);
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}
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#define avpriv_atomic_ptr_cas atomic_ptr_cas_gcc
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static inline void *atomic_ptr_cas_gcc(void * volatile *ptr,
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void *oldval, void *newval)
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{
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#ifdef __ARMCC_VERSION
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// armcc will throw an error if ptr is not an integer type
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volatile uintptr_t *tmp = (volatile uintptr_t*)ptr;
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return (void*)__sync_val_compare_and_swap(tmp, oldval, newval);
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#else
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return __sync_val_compare_and_swap(ptr, oldval, newval);
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#endif
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}
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#endif /* AVUTIL_ATOMIC_GCC_H */
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