mirror of https://github.com/mpv-player/mpv
33 lines
1.3 KiB
C
33 lines
1.3 KiB
C
/*
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* This file is part of mpv.
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* Copyright (c) 2013 Stefano Pigozzi <stefano.pigozzi@gmail.com>
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*
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* mpv is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpv 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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// At this point both gcc and clang had __sync_synchronize support for some
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// time. We only support a full memory barrier.
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#include "config.h"
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#if HAVE_ATOMIC_BUILTINS
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# define mp_memory_barrier() __atomic_thread_fence(__ATOMIC_SEQ_CST)
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# define mp_atomic_add_and_fetch(a, b) __atomic_add_fetch(a, b,__ATOMIC_SEQ_CST)
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#elif HAVE_SYNC_BUILTINS
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# define mp_memory_barrier() __sync_synchronize()
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# define mp_atomic_add_and_fetch(a, b) __sync_add_and_fetch(a, b)
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#else
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# error "this should have been a configuration error, report a bug please"
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#endif
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