1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. 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, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 #include <salhelper/dynload.hxx> 25 #include <rtl/ustrbuf.hxx> 26 27 namespace salhelper 28 { 29 30 typedef void* (SAL_CALL *ApiInitFunction) (void); 31 32 ORealDynamicLoader::ORealDynamicLoader(ORealDynamicLoader ** ppSetToZeroInDestructor_, 33 const rtl::OUString& moduleName, 34 const rtl::OUString& initFunction, 35 void* pApi, 36 oslModule pModule) 37 : m_pApi(pApi) 38 , m_refCount(1) 39 , m_pModule(pModule) 40 , m_strModuleName(moduleName) 41 , m_strInitFunction(initFunction) 42 , ppSetToZeroInDestructor( ppSetToZeroInDestructor_ ) 43 { 44 } 45 46 ORealDynamicLoader* ORealDynamicLoader::newInstance(ORealDynamicLoader ** ppSetToZeroInDestructor, 47 const rtl::OUString& moduleName, 48 const rtl::OUString& initFunction) 49 { 50 ApiInitFunction initFunc; 51 oslModule pModule = osl_loadModule(moduleName.pData, SAL_LOADMODULE_DEFAULT); 52 53 if ( !pModule ) 54 { 55 return NULL; 56 } 57 58 initFunc = (ApiInitFunction)osl_getFunctionSymbol( 59 pModule, initFunction.pData); 60 61 if ( !initFunc ) 62 { 63 osl_unloadModule(pModule); 64 return NULL; 65 } 66 67 return(new ORealDynamicLoader(ppSetToZeroInDestructor, moduleName, 68 initFunction, 69 initFunc(), 70 pModule)); 71 } 72 73 ORealDynamicLoader::~ORealDynamicLoader() 74 { 75 // set the address to zero 76 if( ppSetToZeroInDestructor ) 77 *ppSetToZeroInDestructor = 0; 78 79 if (m_pModule) 80 { 81 osl_unloadModule(m_pModule); 82 m_pModule = NULL; 83 } 84 } 85 86 sal_uInt32 ORealDynamicLoader::acquire() 87 { 88 return ++m_refCount; 89 } 90 91 sal_uInt32 ORealDynamicLoader::release() 92 { 93 sal_uInt32 nRet = --m_refCount; 94 if( nRet == 0 ) 95 delete this; 96 return nRet; 97 } 98 99 100 void* ORealDynamicLoader::getApi() const 101 { 102 return m_pApi; 103 } 104 105 } // namespace salhelper 106 107