00001 /* ==================================================================== 00002 * The Apache Software License, Version 1.1 00003 * 00004 * Copyright (c) 2001-2003 The Apache Software Foundation. All rights 00005 * reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions 00009 * are met: 00010 * 00011 * 1. Redistributions of source code must retain the above copyright 00012 * notice, this list of conditions and the following disclaimer. 00013 * 00014 * 2. Redistributions in binary form must reproduce the above copyright 00015 * notice, this list of conditions and the following disclaimer in 00016 * the documentation and/or other materials provided with the 00017 * distribution. 00018 * 00019 * 3. The end-user documentation included with the redistribution, 00020 * if any, must include the following acknowledgment: 00021 * "This product includes software developed by the 00022 * Apache Software Foundation (http://www.apache.org/)." 00023 * Alternately, this acknowledgment may appear in the software itself, 00024 * if and wherever such third-party acknowledgments normally appear. 00025 * 00026 * 4. The names "Apache" and "Apache Software Foundation" must 00027 * not be used to endorse or promote products derived from this 00028 * software without prior written permission. For written 00029 * permission, please contact apache@apache.org. 00030 * 00031 * 5. Products derived from this software may not be called "Apache", 00032 * nor may "Apache" appear in their name, without prior written 00033 * permission of the Apache Software Foundation. 00034 * 00035 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 00036 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00037 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00038 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 00039 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00040 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00041 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 00042 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 00043 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00044 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 00045 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00046 * SUCH DAMAGE. 00047 * ==================================================================== 00048 * 00049 * This software consists of voluntary contributions made by many 00050 * individuals on behalf of the Apache Software Foundation. For more 00051 * information on the Apache Software Foundation, please see 00052 * <http://www.apache.org/>. 00053 */ 00054 00055 #ifndef APR_OPTIONAL_H 00056 #define APR_OPTIONAL_H 00057 00058 #include "apu.h" 00063 #ifdef __cplusplus 00064 extern "C" { 00065 #endif 00066 00080 #define APR_OPTIONAL_FN_TYPE(name) apr_OFN_##name##_t 00081 00088 #define APR_DECLARE_OPTIONAL_FN(ret,name,args) \ 00089 typedef ret (APR_OPTIONAL_FN_TYPE(name)) args 00090 00097 typedef void (apr_opt_fn_t)(void); 00099 APU_DECLARE_NONSTD(void) apr_dynamic_fn_register(const char *szName, 00100 apr_opt_fn_t *pfn); 00101 00103 APU_DECLARE_NONSTD(void) apr_register_optional_fn(const char *szName, 00104 apr_opt_fn_t *pfn); 00105 00112 #define APR_REGISTER_OPTIONAL_FN(name) do { \ 00113 APR_OPTIONAL_FN_TYPE(name) *apu__opt = name; \ 00114 apr_dynamic_fn_register(#name,(apr_opt_fn_t *)apu__opt); \ 00115 } while (0) 00116 00120 APU_DECLARE(apr_opt_fn_t *) apr_dynamic_fn_retrieve(const char *szName); 00121 00123 APU_DECLARE(apr_opt_fn_t *) apr_retrieve_optional_fn(const char *szName); 00124 00129 #define APR_RETRIEVE_OPTIONAL_FN(name) \ 00130 (APR_OPTIONAL_FN_TYPE(name) *)apr_dynamic_fn_retrieve(#name) 00131 00133 #ifdef __cplusplus 00134 } 00135 #endif 00136 00137 #endif /* APR_OPTIONAL_H */