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/*
* Copyright (C) 2004, 2007, 2008 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 1998-2001 Internet Software Consortium.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: mutex.h,v 1.20 2008/09/12 04:46:25 marka Exp $ */
#ifndef ISC_MUTEX_H
#define ISC_MUTEX_H 1
#include <isc/net.h>
#include <windows.h>
#include <isc/result.h>
typedef CRITICAL_SECTION isc_mutex_t;
/*
* This definition is here since somve versions of WINBASE.H
* omits it for some reason.
*/
#if (_WIN32_WINNT < 0x0400)
WINBASEAPI BOOL WINAPI
TryEnterCriticalSection(LPCRITICAL_SECTION lpCriticalSection);
#endif /* _WIN32_WINNT < 0x0400 */
#define isc_mutex_init(mp) \
(InitializeCriticalSection((mp)), ISC_R_SUCCESS)
#define isc_mutex_lock(mp) \
(EnterCriticalSection((mp)), ISC_R_SUCCESS)
#define isc_mutex_unlock(mp) \
(LeaveCriticalSection((mp)), ISC_R_SUCCESS)
#define isc_mutex_trylock(mp) \
(TryEnterCriticalSection((mp)) ? ISC_R_SUCCESS : ISC_R_LOCKBUSY)
#define isc_mutex_destroy(mp) \
(DeleteCriticalSection((mp)), ISC_R_SUCCESS)
/*
* This is a placeholder for now since we are not keeping any mutex stats
*/
#define isc_mutex_stats(fp) do {} while (0)
#endif /* ISC_MUTEX_H */
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