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43 lines
1.5 KiB
43 lines
1.5 KiB
9 years ago
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/*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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 COMPAT_DISPATCH_SEMAPHORE_SEMAPHORE_H
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#define COMPAT_DISPATCH_SEMAPHORE_SEMAPHORE_H
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#include <dispatch/dispatch.h>
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#include <errno.h>
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#define sem_t dispatch_semaphore_t
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#define sem_post(psem) dispatch_semaphore_signal(*psem)
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#define sem_wait(psem) dispatch_semaphore_wait(*psem, DISPATCH_TIME_FOREVER)
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#define sem_timedwait(psem, val) dispatch_semaphore_wait(*psem, dispatch_walltime(val, 0))
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#define sem_destroy(psem) dispatch_release(*psem)
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static inline int compat_sem_init(dispatch_semaphore_t *psem,
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int unused, int val)
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{
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int ret = !!(*psem = dispatch_semaphore_create(val)) - 1;
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if (ret < 0)
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errno = ENOMEM;
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return ret;
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}
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#define sem_init compat_sem_init
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#endif /* COMPAT_DISPATCH_SEMAPHORE_SEMAPHORE_H */
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