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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 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 */ |