1/* 2 * libjingle 3 * Copyright 2012, Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28// This file is a supermacro 29// (see http://wanderinghorse.net/computing/papers/supermacros_cpp.html) to 30// expand a definition of a late-binding symbol table class. 31// 32// Arguments: 33// LATE_BINDING_SYMBOL_TABLE_CLASS_NAME: Name of the class to generate. 34// LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST: List of symbols to load from the DLL, 35// as an X-Macro list (see http://www.drdobbs.com/blogs/cpp/228700289). 36// LATE_BINDING_SYMBOL_TABLE_DLL_NAME: String literal for the DLL file name to 37// load. 38// 39// From a .cc file, include the header file containing your call to the .h.def 40// supermacro, and then call this supermacro (optionally from inside the 41// namespace for the class to generate, if any). Example: 42// 43// #include "myclassname.h" 44// 45// namespace foo { 46// 47// #define LATE_BINDING_SYMBOL_TABLE_CLASS_NAME MY_CLASS_NAME 48// #define LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST MY_SYMBOLS_LIST 49// #define LATE_BINDING_SYMBOL_TABLE_DLL_NAME "libdll.so.n" 50// #include "talk/base/latebindingsymboltable.cc.def" 51// 52// } 53 54#ifndef LATE_BINDING_SYMBOL_TABLE_CLASS_NAME 55#error You must define LATE_BINDING_SYMBOL_TABLE_CLASS_NAME 56#endif 57 58#ifndef LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST 59#error You must define LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST 60#endif 61 62#ifndef LATE_BINDING_SYMBOL_TABLE_DLL_NAME 63#error You must define LATE_BINDING_SYMBOL_TABLE_DLL_NAME 64#endif 65 66const ::talk_base::LateBindingSymbolTable::TableInfo 67 LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::kTableInfo = { 68 LATE_BINDING_SYMBOL_TABLE_DLL_NAME, 69 SYMBOL_TABLE_SIZE, 70 (const char *const []){ 71#define X(sym) \ 72 #sym, 73LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST 74#undef X 75 }, 76}; 77 78LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::LATE_BINDING_SYMBOL_TABLE_CLASS_NAME() 79 : ::talk_base::LateBindingSymbolTable(&kTableInfo, table_) {} 80 81LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::~LATE_BINDING_SYMBOL_TABLE_CLASS_NAME() {} 82 83#undef LATE_BINDING_SYMBOL_TABLE_CLASS_NAME 84#undef LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST 85#undef LATE_BINDING_SYMBOL_TABLE_DLL_NAME 86