diff options
Diffstat (limited to 'bridges/source/cpp_uno/shared/cppinterfaceproxy.cxx')
| -rw-r--r-- | bridges/source/cpp_uno/shared/cppinterfaceproxy.cxx | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/bridges/source/cpp_uno/shared/cppinterfaceproxy.cxx b/bridges/source/cpp_uno/shared/cppinterfaceproxy.cxx new file mode 100644 index 000000000000..90c53d258d10 --- /dev/null +++ b/bridges/source/cpp_uno/shared/cppinterfaceproxy.cxx @@ -0,0 +1,205 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_bridges.hxx" + +#include "bridges/cpp_uno/shared/cppinterfaceproxy.hxx" + +#include "guardedarray.hxx" + +#include "bridges/cpp_uno/shared/bridge.hxx" +#include "bridges/cpp_uno/shared/vtablefactory.hxx" + +#include "com/sun/star/uno/XInterface.hpp" +#include "osl/diagnose.h" +#include "osl/getglobalmutex.hxx" +#include "osl/interlck.h" +#include "osl/mutex.hxx" +#include "rtl/instance.hxx" +#include "typelib/typedescription.h" + +#include <cstddef> +#include <new> + + +static bridges::cpp_uno::shared::VtableFactory * pInstance; + +#if defined(__GNUG__) && !defined(__MINGW32__) +void dso_init(void) __attribute__((constructor)); +void dso_exit(void) __attribute__((destructor)); +#endif + +void dso_init(void) { + if (!pInstance) + pInstance = new bridges::cpp_uno::shared::VtableFactory(); +} + +void dso_exit(void) { + if (pInstance) + { + delete pInstance; + pInstance = NULL; + } +} + +#ifdef __SUNPRO_CC +# pragma init(dso_init) +# pragma fini(dso_exit) +#endif + + + +namespace { + +struct InitVtableFactory { + bridges::cpp_uno::shared::VtableFactory * operator()() { + return pInstance; + } +}; + +bridges::cpp_uno::shared::VtableFactory * getVtableFactory() { + return rtl_Instance< + bridges::cpp_uno::shared::VtableFactory, InitVtableFactory, + osl::MutexGuard, osl::GetGlobalMutex >::create( + InitVtableFactory(), osl::GetGlobalMutex()); +} + +} + +namespace bridges { namespace cpp_uno { namespace shared { + +void freeCppInterfaceProxy(uno_ExtEnvironment * pEnv, void * pInterface) +{ + CppInterfaceProxy * pThis = CppInterfaceProxy::castInterfaceToProxy( + pInterface); + if (pEnv != pThis->pBridge->getCppEnv()) { + OSL_ASSERT(false); + } + + (*pThis->pBridge->getUnoEnv()->revokeInterface)( + pThis->pBridge->getUnoEnv(), pThis->pUnoI ); + (*pThis->pUnoI->release)( pThis->pUnoI ); + ::typelib_typedescription_release( + (typelib_TypeDescription *)pThis->pTypeDescr ); + pThis->pBridge->release(); + +#if OSL_DEBUG_LEVEL > 1 + *(int *)pInterface = 0xdeadbabe; +#endif + pThis->~CppInterfaceProxy(); + delete[] reinterpret_cast< char * >(pThis); +} + +com::sun::star::uno::XInterface * CppInterfaceProxy::create( + bridges::cpp_uno::shared::Bridge * pBridge, uno_Interface * pUnoI, + typelib_InterfaceTypeDescription * pTypeDescr, rtl::OUString const & rOId) + SAL_THROW(()) +{ + typelib_typedescription_complete( + reinterpret_cast< typelib_TypeDescription ** >(&pTypeDescr)); + bridges::cpp_uno::shared::VtableFactory::Vtables aVtables( + getVtableFactory()->getVtables(pTypeDescr)); + bridges::cpp_uno::shared::GuardedArray< char > pMemory( + new char[ + sizeof (CppInterfaceProxy) + + (aVtables.count - 1) * sizeof (void **)]); + new(pMemory.get()) CppInterfaceProxy(pBridge, pUnoI, pTypeDescr, rOId); + CppInterfaceProxy * pProxy = reinterpret_cast< CppInterfaceProxy * >( + pMemory.release()); + for (sal_Int32 i = 0; i < aVtables.count; ++i) { + pProxy->vtables[i] = VtableFactory::mapBlockToVtable( + aVtables.blocks[i].start); + } + return castProxyToInterface(pProxy); +} + +void CppInterfaceProxy::acquireProxy() SAL_THROW(()) +{ + if (1 == osl_incrementInterlockedCount( &nRef )) + { + // rebirth of proxy zombie + // register at cpp env + void * pThis = castProxyToInterface( this ); + (*pBridge->getCppEnv()->registerProxyInterface)( + pBridge->getCppEnv(), &pThis, freeCppInterfaceProxy, oid.pData, + pTypeDescr ); + OSL_ASSERT( pThis == castProxyToInterface( this ) ); + } +} + +void CppInterfaceProxy::releaseProxy() SAL_THROW(()) +{ + if (! osl_decrementInterlockedCount( &nRef )) // last release + { + // revoke from cpp env + (*pBridge->getCppEnv()->revokeInterface)( + pBridge->getCppEnv(), castProxyToInterface( this ) ); + } +} + +CppInterfaceProxy::CppInterfaceProxy( + bridges::cpp_uno::shared::Bridge * pBridge_, uno_Interface * pUnoI_, + typelib_InterfaceTypeDescription * pTypeDescr_, rtl::OUString const & rOId_) + SAL_THROW(()) + : nRef( 1 ) + , pBridge( pBridge_ ) + , pUnoI( pUnoI_ ) + , pTypeDescr( pTypeDescr_ ) + , oid( rOId_ ) +{ + pBridge->acquire(); + ::typelib_typedescription_acquire( (typelib_TypeDescription *)pTypeDescr ); + (*pUnoI->acquire)( pUnoI ); + (*pBridge->getUnoEnv()->registerInterface)( + pBridge->getUnoEnv(), reinterpret_cast< void ** >( &pUnoI ), oid.pData, + pTypeDescr ); +} + +CppInterfaceProxy::~CppInterfaceProxy() +{} + +com::sun::star::uno::XInterface * CppInterfaceProxy::castProxyToInterface( + CppInterfaceProxy * pProxy) +{ + return reinterpret_cast< com::sun::star::uno::XInterface * >( + &pProxy->vtables); +} + +CppInterfaceProxy * CppInterfaceProxy::castInterfaceToProxy(void * pInterface) +{ + // pInterface == &pProxy->vtables (this emulated offsetof is not truly + // portable): + char const * const base = reinterpret_cast< char const * >(16); + std::ptrdiff_t const offset = reinterpret_cast< char const * >( + &reinterpret_cast< CppInterfaceProxy const * >(base)->vtables) - base; + return reinterpret_cast< CppInterfaceProxy * >( + static_cast< char * >(pInterface) - offset); +} + +} } } |