1/*------------------------------------------------------------------------- 2 * drawElements Utility Library 3 * ---------------------------- 4 * 5 * Copyright 2014 The Android Open Source Project 6 * 7 * Licensed under the Apache License, Version 2.0 (the "License"); 8 * you may not use this file except in compliance with the License. 9 * You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, software 14 * distributed under the License is distributed on an "AS IS" BASIS, 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 * See the License for the specific language governing permissions and 17 * limitations under the License. 18 * 19 *//*! 20 * \file 21 * \brief Dynamic link library abstraction. 22 *//*--------------------------------------------------------------------*/ 23 24#include "deDynamicLibrary.h" 25#include "deMemory.h" 26 27#if (DE_OS == DE_OS_UNIX) || (DE_OS == DE_OS_ANDROID) || (DE_OS == DE_OS_OSX) || (DE_OS == DE_OS_SYMBIAN) || (DE_OS == DE_OS_IOS) 28/* Posix implementation. */ 29 30#include <dlfcn.h> 31 32struct deDynamicLibrary_s 33{ 34 void* libHandle; 35}; 36 37deDynamicLibrary* deDynamicLibrary_open (const char* fileName) 38{ 39 deDynamicLibrary* library = (deDynamicLibrary*)deCalloc(sizeof(deDynamicLibrary)); 40 if (!library) 41 return DE_NULL; 42 43 library->libHandle = dlopen(fileName, RTLD_LAZY); 44 if (!library->libHandle) 45 { 46 deFree(library); 47 return DE_NULL; 48 } 49 50 return library; 51} 52 53void deDynamicLibrary_close (deDynamicLibrary* library) 54{ 55 if (library && library->libHandle) 56 dlclose(library->libHandle); 57 deFree(library); 58} 59 60deFunctionPtr deDynamicLibrary_getFunction (const deDynamicLibrary* library, const char* symbolName) 61{ 62 /* C forbids direct cast from object pointer to function pointer */ 63 union 64 { 65 deFunctionPtr funcPtr; 66 void* objPtr; 67 } ptr; 68 69 DE_ASSERT(library && library->libHandle && symbolName); 70 ptr.objPtr = dlsym(library->libHandle, symbolName); 71 return ptr.funcPtr; 72} 73 74#elif (DE_OS == DE_OS_WIN32) 75/* Win32 implementation. */ 76 77#define WIN32_LEAN_AND_MEAN 78#define VC_EXTRALEAN 79#include <windows.h> 80 81struct deDynamicLibrary_s 82{ 83 HINSTANCE handle; 84}; 85 86deDynamicLibrary* deDynamicLibrary_open (const char* fileName) 87{ 88 deDynamicLibrary* library = (deDynamicLibrary*)deCalloc(sizeof(deDynamicLibrary)); 89 if (!library) 90 return DE_NULL; 91 92 library->handle = LoadLibrary(fileName); 93 if (!library->handle) 94 { 95 deFree(library); 96 return DE_NULL; 97 } 98 99 return library; 100} 101 102void deDynamicLibrary_close (deDynamicLibrary* library) 103{ 104 if (library && library->handle) 105 FreeLibrary(library->handle); 106 deFree(library); 107} 108 109deFunctionPtr deDynamicLibrary_getFunction (const deDynamicLibrary* library, const char* symbolName) 110{ 111 DE_ASSERT(library && library->handle && symbolName); 112 return (deFunctionPtr)GetProcAddress(library->handle, symbolName); 113} 114 115#else 116# error deDynamicLibrary is not implemented on this OS 117#endif 118