1 /* 2 * Copyright (c) 2014-2015, Intel Corporation 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without modification, 6 * are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, this 9 * list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation and/or 13 * other materials provided with the distribution. 14 * 15 * 3. Neither the name of the copyright holder nor the names of its contributors 16 * may be used to endorse or promote products derived from this software without 17 * specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 26 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 #pragma once 31 32 #include "NonCopyable.hpp" 33 34 #include <string> 35 36 class DynamicLibrary : private utility::NonCopyable 37 { 38 public: 39 /** 40 * @param[in] path the library path which can be provided either in absolute path or 41 * or OS agnostic (ie. generic) name. 42 * Note: 43 * If generic name provided, OS specific prefix, suffix are added automatically 44 */ 45 DynamicLibrary(const std::string &path); 46 ~DynamicLibrary(); 47 48 /** 49 * Get a symbol from library 50 * 51 * @param[in] symbol the symbol name 52 * @return a symbol's address in the library if it exists, NULL otherwise 53 */ 54 template <typename SymbolType> getSymbol(const std::string & symbol) const55 SymbolType getSymbol(const std::string &symbol) const 56 { 57 return reinterpret_cast<SymbolType>(osGetSymbol(symbol)); 58 } 59 60 private: 61 /** 62 * OS secific helper to get a symbol from library 63 * 64 * @param[in] symbol the symbol name 65 * @return symbol's address in the library if it exists, NULL otherwise 66 */ 67 void *osGetSymbol(const std::string &symbol) const; 68 69 /** 70 * Sanitize library path 71 * 72 * @param[in] path library stripped path (eg. no prefix, no suffix) 73 * @return OS specific library path including prefix and suffix 74 */ 75 static std::string osSanitizePathName(const std::string &path); 76 77 /** 78 * Opaque object for library handling 79 */ 80 void *_handle; 81 82 /** 83 * Path to the library 84 */ 85 const std::string _path; 86 87 /** 88 * OS Specific library name patterns 89 * @{ 90 */ 91 static const std::string _osLibraryPrefix; 92 static const std::string _osLibrarySuffix; 93 /** @}*/ 94 }; 95