113 lines
2.6 KiB
C
113 lines
2.6 KiB
C
/*
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* $Id$
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*
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Copyright (c) 2006-2019 Chung, Hyung-Hwan. All rights reserved.
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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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THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _QSE_SI_RWL_H_
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#define _QSE_SI_RWL_H_
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#include <qse/types.h>
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#include <qse/macros.h>
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#include <qse/si/mtx.h>
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#include <qse/si/cnd.h>
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enum qse_rwl_flag_t
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{
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QSE_RWL_PREFER_WRITER = (1 << 0)
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};
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typedef enum qse_rwl_flag_t qse_rwl_flag_t;
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struct qse_rwl_t
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{
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qse_mmgr_t* mmgr;
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int flags;
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qse_mtx_t mtx;
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qse_cnd_t rcnd;
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qse_cnd_t wcnd;
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qse_size_t rwait_count;
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qse_size_t wwait_count;
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qse_size_t ractive_count;
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qse_size_t wactive_count;
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};
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typedef struct qse_rwl_t qse_rwl_t;
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#ifdef __cplusplus
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extern "C" {
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#endif
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QSE_EXPORT qse_rwl_t* qse_rwl_open (
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qse_mmgr_t* mmgr,
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qse_size_t xtnsize,
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int flags
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);
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QSE_EXPORT void qse_rwl_close (
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qse_rwl_t* rwl
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);
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QSE_EXPORT int qse_rwl_init (
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qse_rwl_t* rwl,
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qse_mmgr_t* mmgr,
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int flags
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);
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QSE_EXPORT void qse_rwl_fini (
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qse_rwl_t* rwl
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);
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QSE_EXPORT qse_mmgr_t* qse_rwl_getmmgr (
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qse_rwl_t* rwl
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);
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QSE_EXPORT void* qse_rwl_getxtn (
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qse_rwl_t* rwl
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);
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QSE_EXPORT int qse_rwl_lockr (
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qse_rwl_t* rwl,
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const qse_ntime_t* waiting_time
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);
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QSE_EXPORT int qse_rwl_unlockr (
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qse_rwl_t* rwl
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);
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QSE_EXPORT int qse_rwl_lockw (
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qse_rwl_t* rwl,
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const qse_ntime_t* waiting_time
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);
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QSE_EXPORT int qse_rwl_unlockw (
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qse_rwl_t* rwl
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);
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#ifdef __cplusplus
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}
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#endif
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#endif
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