xref: /trunk/main/salhelper/source/dynload.cxx (revision cdf0e10c)
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27*cdf0e10cSrcweir 
28*cdf0e10cSrcweir #include <salhelper/dynload.hxx>
29*cdf0e10cSrcweir #include <rtl/ustrbuf.hxx>
30*cdf0e10cSrcweir 
31*cdf0e10cSrcweir namespace salhelper
32*cdf0e10cSrcweir {
33*cdf0e10cSrcweir 
34*cdf0e10cSrcweir typedef	void*	(SAL_CALL *ApiInitFunction) (void);
35*cdf0e10cSrcweir 
36*cdf0e10cSrcweir ORealDynamicLoader::ORealDynamicLoader(ORealDynamicLoader ** ppSetToZeroInDestructor_,
37*cdf0e10cSrcweir 				       const rtl::OUString& moduleName,
38*cdf0e10cSrcweir 				       const rtl::OUString& initFunction,
39*cdf0e10cSrcweir 				       void* pApi,
40*cdf0e10cSrcweir 				       oslModule pModule)
41*cdf0e10cSrcweir 	: m_pApi(pApi)
42*cdf0e10cSrcweir 	, m_refCount(1)
43*cdf0e10cSrcweir 	, m_pModule(pModule)
44*cdf0e10cSrcweir 	, m_strModuleName(moduleName)
45*cdf0e10cSrcweir 	, m_strInitFunction(initFunction)
46*cdf0e10cSrcweir 	, ppSetToZeroInDestructor( ppSetToZeroInDestructor_ )
47*cdf0e10cSrcweir {
48*cdf0e10cSrcweir }
49*cdf0e10cSrcweir 
50*cdf0e10cSrcweir ORealDynamicLoader* ORealDynamicLoader::newInstance(ORealDynamicLoader ** ppSetToZeroInDestructor,
51*cdf0e10cSrcweir 								  const rtl::OUString& moduleName,
52*cdf0e10cSrcweir 								  const rtl::OUString& initFunction)
53*cdf0e10cSrcweir {
54*cdf0e10cSrcweir 	ApiInitFunction initFunc;
55*cdf0e10cSrcweir 	oslModule pModule = osl_loadModule(moduleName.pData, SAL_LOADMODULE_DEFAULT);
56*cdf0e10cSrcweir 
57*cdf0e10cSrcweir 	if ( !pModule )
58*cdf0e10cSrcweir 	{
59*cdf0e10cSrcweir 		return NULL;
60*cdf0e10cSrcweir 	}
61*cdf0e10cSrcweir 
62*cdf0e10cSrcweir 	initFunc = (ApiInitFunction)osl_getFunctionSymbol(
63*cdf0e10cSrcweir         pModule, initFunction.pData);
64*cdf0e10cSrcweir 
65*cdf0e10cSrcweir 	if ( !initFunc )
66*cdf0e10cSrcweir 	{
67*cdf0e10cSrcweir 		osl_unloadModule(pModule);
68*cdf0e10cSrcweir 		return NULL;
69*cdf0e10cSrcweir 	}
70*cdf0e10cSrcweir 
71*cdf0e10cSrcweir 	return(new ORealDynamicLoader(ppSetToZeroInDestructor, moduleName,
72*cdf0e10cSrcweir 								 initFunction,
73*cdf0e10cSrcweir 								 initFunc(),
74*cdf0e10cSrcweir 								 pModule));
75*cdf0e10cSrcweir }
76*cdf0e10cSrcweir 
77*cdf0e10cSrcweir ORealDynamicLoader::~ORealDynamicLoader()
78*cdf0e10cSrcweir {
79*cdf0e10cSrcweir 	// set the address to zero
80*cdf0e10cSrcweir 	if( ppSetToZeroInDestructor )
81*cdf0e10cSrcweir 		*ppSetToZeroInDestructor = 0;
82*cdf0e10cSrcweir 
83*cdf0e10cSrcweir 	if (m_pModule)
84*cdf0e10cSrcweir 	{
85*cdf0e10cSrcweir 		osl_unloadModule(m_pModule);
86*cdf0e10cSrcweir 		m_pModule = NULL;
87*cdf0e10cSrcweir 	}
88*cdf0e10cSrcweir }
89*cdf0e10cSrcweir 
90*cdf0e10cSrcweir sal_uInt32 ORealDynamicLoader::acquire()
91*cdf0e10cSrcweir {
92*cdf0e10cSrcweir 	return ++m_refCount;
93*cdf0e10cSrcweir }
94*cdf0e10cSrcweir 
95*cdf0e10cSrcweir sal_uInt32 ORealDynamicLoader::release()
96*cdf0e10cSrcweir {
97*cdf0e10cSrcweir 	sal_uInt32 nRet = --m_refCount;
98*cdf0e10cSrcweir 	if( nRet == 0 )
99*cdf0e10cSrcweir 		delete this;
100*cdf0e10cSrcweir 	return nRet;
101*cdf0e10cSrcweir }
102*cdf0e10cSrcweir 
103*cdf0e10cSrcweir 
104*cdf0e10cSrcweir void* ORealDynamicLoader::getApi() const
105*cdf0e10cSrcweir {
106*cdf0e10cSrcweir 	return m_pApi;
107*cdf0e10cSrcweir }
108*cdf0e10cSrcweir 
109*cdf0e10cSrcweir } // namespace salhelper
110*cdf0e10cSrcweir 
111