64 lines
2.2 KiB
C
64 lines
2.2 KiB
C
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2011 Ed Schouten <ed@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE__THREADS_H_
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#define _MACHINE__THREADS_H_
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#include <sys/types.h>
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#include <sys/lock.h>
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/*
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* The C11 threads interface.
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*
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* This interface is implemented as a light-weight wrapper around
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* <pthread.h>. To prevent namespace pollution, the once_flag object,
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* its corresponding ONCE_FLAG_INIT and TSS_DTOR_ITERATIONS have been
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* copied from this header file. They must be kept in sync.
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*/
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typedef pthread_cond_t cnd_t;
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typedef pthread_mutex_t mtx_t;
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typedef pthread_t thrd_t;
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typedef pthread_key_t tss_t;
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/* pthread_once_t */
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typedef struct {
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mtx_t mutex;
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int state;
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} once_flag;
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/* PTHREAD_ONCE_INIT */
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#define ONCE_FLAG_INIT { ((pthread_mutex_t)19), 0 }
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/* PTHREAD_DESTRUCTOR_ITERATIONS */
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#define TSS_DTOR_ITERATIONS 4
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#endif /* _MACHINE__THREADS_H_ */
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