salhelper/source/dynload.cxx

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  30
  31 #include <salhelper/dynload.hxx>
  32 #include <rtl/ustrbuf.hxx>
  33
  34 namespace salhelper
  35 {
  36
  37 typedef void*   (SAL_CALL *ApiInitFunction) (void);
  38
  39 ORealDynamicLoader::ORealDynamicLoader(ORealDynamicLoader ** ppSetToZeroInDestructor_,
  40                        const rtl::OUString& moduleName,
  41                        const rtl::OUString& initFunction,
  42                        void* pApi,
  43                        oslModule pModule)
  44     : m_pApi(pApi)
  45     , m_refCount(1)
  46     , m_pModule(pModule)
  47     , m_strModuleName(moduleName)
  48     , m_strInitFunction(initFunction)
  49     , ppSetToZeroInDestructor( ppSetToZeroInDestructor_ )
  50 {
  51 }
  52
  53 ORealDynamicLoader* ORealDynamicLoader::newInstance(ORealDynamicLoader ** ppSetToZeroInDestructor,
  54                                   const rtl::OUString& moduleName,
  55                                   const rtl::OUString& initFunction)
  56 {
  57     ApiInitFunction initFunc;
  58     oslModule pModule = osl_loadModule(moduleName.pData, SAL_LOADMODULE_DEFAULT);
  59
  60     if ( !pModule )
  61     {
  62         return NULL;
  63     }
  64
  65     initFunc = (ApiInitFunction)osl_getFunctionSymbol(
  66         pModule, initFunction.pData);
  67
  68     if ( !initFunc )
  69     {
  70         osl_unloadModule(pModule);
  71         return NULL;
  72     }
  73
  74     return(new ORealDynamicLoader(ppSetToZeroInDestructor, moduleName,
  75                                  initFunction,
  76                                  initFunc(),
  77                                  pModule));
  78 }
  79
  80 ORealDynamicLoader::~ORealDynamicLoader()
  81 {
  82     // set the address to zero
  83     if( ppSetToZeroInDestructor )
  84         *ppSetToZeroInDestructor = 0;
  85
  86     if (m_pModule)
  87     {
  88         osl_unloadModule(m_pModule);
  89         m_pModule = NULL;
  90     }
  91 }
  92
  93 sal_uInt32 ORealDynamicLoader::acquire()
  94 {
  95     return ++m_refCount;
  96 }
  97
  98 sal_uInt32 ORealDynamicLoader::release()
  99 {
 100     sal_uInt32 nRet = --m_refCount;
 101     if( nRet == 0 )
 102         delete this;
 103     return nRet;
 104 }
 105
 106
 107 void* ORealDynamicLoader::getApi() const
 108 {
 109     return m_pApi;
 110 }
 111
 112 } // namespace salhelper
 113