1258945Sroberto/* 2258945Sroberto * Copyright (C) 2004, 2007 Internet Systems Consortium, Inc. ("ISC") 3258945Sroberto * Copyright (C) 1999-2001 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 18258945Sroberto/* $Id: once.h,v 1.9 2007/06/19 23:47:20 tbox Exp $ */ 19258945Sroberto 20258945Sroberto#ifndef ISC_ONCE_H 21258945Sroberto#define ISC_ONCE_H 1 22258945Sroberto 23258945Sroberto#include <isc/lang.h> 24258945Sroberto#include <isc/result.h> 25258945Sroberto 26258945SrobertoISC_LANG_BEGINDECLS 27258945Sroberto 28258945Srobertotypedef struct { 29258945Sroberto int status; 30258945Sroberto LONG counter; 31258945Sroberto} isc_once_t; 32258945Sroberto 33258945Sroberto#define ISC_ONCE_INIT_NEEDED 0 34258945Sroberto#define ISC_ONCE_INIT_DONE 1 35258945Sroberto 36258945Sroberto#define ISC_ONCE_INIT { ISC_ONCE_INIT_NEEDED, 1 } 37258945Sroberto 38258945Srobertoisc_result_t 39258945Srobertoisc_once_do(isc_once_t *controller, void(*function)(void)); 40258945Sroberto 41258945SrobertoISC_LANG_ENDDECLS 42258945Sroberto 43258945Sroberto#endif /* ISC_ONCE_H */ 44