1258945Sroberto/* 2258945Sroberto * Copyright (C) 2004, 2007-2009 Internet Systems Consortium, Inc. ("ISC") 3258945Sroberto * Copyright (C) 1998-2001 Internet Software Consortium. 4258945Sroberto * 5258945Sroberto * Permission to use, copy, modify, and/or distribute this software for any 6258945Sroberto * purpose with or without fee is hereby granted, provided that the above 7258945Sroberto * copyright notice and this permission notice appear in all copies. 8258945Sroberto * 9258945Sroberto * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 10258945Sroberto * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 11258945Sroberto * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 12258945Sroberto * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 13258945Sroberto * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 14258945Sroberto * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 15258945Sroberto * PERFORMANCE OF THIS SOFTWARE. 16258945Sroberto */ 17258945Sroberto 18280849Scy/* $Id: mutex.h,v 1.22 2009/01/18 23:48:14 tbox Exp $ */ 19258945Sroberto 20258945Sroberto#ifndef ISC_MUTEX_H 21258945Sroberto#define ISC_MUTEX_H 1 22258945Sroberto 23258945Sroberto#include <isc/net.h> 24258945Sroberto#include <windows.h> 25258945Sroberto 26258945Sroberto#include <isc/result.h> 27258945Sroberto 28258945Srobertotypedef CRITICAL_SECTION isc_mutex_t; 29258945Sroberto 30258945Sroberto/* 31258945Sroberto * This definition is here since some versions of WINBASE.H 32258945Sroberto * omits it for some reason. 33258945Sroberto */ 34258945Sroberto#if (_WIN32_WINNT < 0x0400) 35258945SrobertoWINBASEAPI BOOL WINAPI 36258945SrobertoTryEnterCriticalSection(LPCRITICAL_SECTION lpCriticalSection); 37258945Sroberto#endif /* _WIN32_WINNT < 0x0400 */ 38258945Sroberto 39258945Sroberto#define isc_mutex_init(mp) \ 40258945Sroberto (InitializeCriticalSection((mp)), ISC_R_SUCCESS) 41258945Sroberto#define isc_mutex_lock(mp) \ 42258945Sroberto (EnterCriticalSection((mp)), ISC_R_SUCCESS) 43258945Sroberto#define isc_mutex_unlock(mp) \ 44258945Sroberto (LeaveCriticalSection((mp)), ISC_R_SUCCESS) 45258945Sroberto#define isc_mutex_trylock(mp) \ 46258945Sroberto (TryEnterCriticalSection((mp)) ? ISC_R_SUCCESS : ISC_R_LOCKBUSY) 47258945Sroberto#define isc_mutex_destroy(mp) \ 48258945Sroberto (DeleteCriticalSection((mp)), ISC_R_SUCCESS) 49258945Sroberto 50258945Sroberto/* 51258945Sroberto * This is a placeholder for now since we are not keeping any mutex stats 52258945Sroberto */ 53258945Sroberto#define isc_mutex_stats(fp) do {} while (0) 54258945Sroberto 55258945Sroberto#endif /* ISC_MUTEX_H */ 56