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https://github.com/FFmpeg/FFmpeg.git
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b7a6d28e5e
Signed-off-by: Thomas Turner <thomastdt@googlemail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/*
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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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#include "libavutil/atomic.h"
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#include "libavutil/avassert.h"
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int main(void)
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{
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volatile int val = 1;
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void *tmp1 = (int *)&val;
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void * volatile *tmp2 = &tmp1;
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int res;
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res = avpriv_atomic_int_add_and_fetch(&val, 1);
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av_assert0(res == 2);
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avpriv_atomic_int_set(&val, 3);
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res = avpriv_atomic_int_get(&val);
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av_assert0(res == 3);
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avpriv_atomic_ptr_cas(tmp2, tmp1, &res);
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av_assert0(*tmp2 == &res);
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return 0;
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}
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