551 lines
18 KiB
C++
551 lines
18 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include "jni_bridge.h"
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#include "jvmaccess/unovirtualmachine.hxx"
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#include "rtl/ref.hxx"
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#include "rtl/strbuf.hxx"
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#include "uno/lbnames.h"
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using namespace ::std;
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using namespace ::rtl;
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using namespace ::osl;
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using namespace ::jni_uno;
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namespace
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{
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extern "C"
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{
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//------------------------------------------------------------------------------
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void SAL_CALL Mapping_acquire( uno_Mapping * mapping )
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SAL_THROW_EXTERN_C()
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{
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Mapping const * that = static_cast< Mapping const * >( mapping );
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that->m_bridge->acquire();
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}
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//------------------------------------------------------------------------------
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void SAL_CALL Mapping_release( uno_Mapping * mapping )
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SAL_THROW_EXTERN_C()
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{
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Mapping const * that = static_cast< Mapping const * >( mapping );
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that->m_bridge->release();
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}
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//------------------------------------------------------------------------------
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void SAL_CALL Mapping_map_to_uno(
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uno_Mapping * mapping, void ** ppOut,
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void * pIn, typelib_InterfaceTypeDescription * td )
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SAL_THROW_EXTERN_C()
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{
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uno_Interface ** ppUnoI = (uno_Interface **)ppOut;
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jobject javaI = (jobject) pIn;
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OSL_ASSERT( sizeof (void *) == sizeof (jobject) );
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OSL_ENSURE( ppUnoI && td, "### null ptr!" );
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if (0 == javaI)
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{
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if (0 != *ppUnoI)
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{
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uno_Interface * p = *(uno_Interface **)ppUnoI;
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(*p->release)( p );
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*ppUnoI = 0;
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}
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}
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else
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{
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try
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{
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Bridge const * bridge =
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static_cast< Mapping const * >( mapping )->m_bridge;
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JNI_guarded_context jni(
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bridge->m_jni_info,
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reinterpret_cast< ::jvmaccess::UnoVirtualMachine * >(
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bridge->m_java_env->pContext ) );
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JNI_interface_type_info const * info =
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static_cast< JNI_interface_type_info const * >(
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bridge->m_jni_info->get_type_info(
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jni, (typelib_TypeDescription *)td ) );
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uno_Interface * pUnoI = bridge->map_to_uno( jni, javaI, info );
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if (0 != *ppUnoI)
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{
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uno_Interface * p = *(uno_Interface **)ppUnoI;
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(*p->release)( p );
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}
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*ppUnoI = pUnoI;
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}
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catch (const BridgeRuntimeError & err)
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{
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#if OSL_DEBUG_LEVEL > 0
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OString cstr_msg(
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OUStringToOString(
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"[jni_uno bridge error] " + err.m_message,
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RTL_TEXTENCODING_ASCII_US ) );
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OSL_FAIL( cstr_msg.getStr() );
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#else
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(void) err; // unused
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#endif
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}
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catch (const ::jvmaccess::VirtualMachine::AttachGuard::CreationException &)
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{
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OSL_FAIL(
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"[jni_uno bridge error] attaching current thread "
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"to java failed!" );
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}
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}
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}
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//------------------------------------------------------------------------------
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void SAL_CALL Mapping_map_to_java(
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uno_Mapping * mapping, void ** ppOut,
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void * pIn, typelib_InterfaceTypeDescription * td )
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SAL_THROW_EXTERN_C()
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{
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jobject * ppJavaI = (jobject *) ppOut;
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uno_Interface * pUnoI = (uno_Interface *)pIn;
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OSL_ASSERT( sizeof (void *) == sizeof (jobject) );
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OSL_ENSURE( ppJavaI && td, "### null ptr!" );
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try
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{
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if (0 == pUnoI)
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{
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if (0 != *ppJavaI)
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{
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Bridge const * bridge =
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static_cast< Mapping const * >( mapping )->m_bridge;
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JNI_guarded_context jni(
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bridge->m_jni_info,
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reinterpret_cast< ::jvmaccess::UnoVirtualMachine * >(
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bridge->m_java_env->pContext ) );
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jni->DeleteGlobalRef( *ppJavaI );
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*ppJavaI = 0;
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}
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}
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else
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{
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Bridge const * bridge =
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static_cast< Mapping const * >( mapping )->m_bridge;
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JNI_guarded_context jni(
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bridge->m_jni_info,
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reinterpret_cast< ::jvmaccess::UnoVirtualMachine * >(
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bridge->m_java_env->pContext ) );
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JNI_interface_type_info const * info =
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static_cast< JNI_interface_type_info const * >(
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bridge->m_jni_info->get_type_info(
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jni, (typelib_TypeDescription *)td ) );
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jobject jlocal = bridge->map_to_java( jni, pUnoI, info );
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if (0 != *ppJavaI)
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jni->DeleteGlobalRef( *ppJavaI );
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*ppJavaI = jni->NewGlobalRef( jlocal );
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jni->DeleteLocalRef( jlocal );
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}
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}
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catch (const BridgeRuntimeError & err)
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{
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#if OSL_DEBUG_LEVEL > 0
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OString cstr_msg(
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OUStringToOString(
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"[jni_uno bridge error] " + err.m_message,
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RTL_TEXTENCODING_ASCII_US ) );
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OSL_FAIL( cstr_msg.getStr() );
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#else
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(void) err; // unused
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#endif
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}
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catch (const ::jvmaccess::VirtualMachine::AttachGuard::CreationException &)
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{
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OSL_FAIL(
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"[jni_uno bridge error] attaching current thread to java failed!" );
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}
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}
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//______________________________________________________________________________
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void SAL_CALL Bridge_free( uno_Mapping * mapping )
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SAL_THROW_EXTERN_C()
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{
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Mapping * that = static_cast< Mapping * >( mapping );
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delete that->m_bridge;
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}
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}
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}
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namespace jni_uno
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{
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//______________________________________________________________________________
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void Bridge::acquire() const SAL_THROW(())
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{
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if (1 == osl_atomic_increment( &m_ref ))
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{
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if (m_registered_java2uno)
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{
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uno_Mapping * mapping = const_cast< Mapping * >( &m_java2uno );
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uno_registerMapping(
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&mapping, Bridge_free,
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m_java_env, (uno_Environment *)m_uno_env, 0 );
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}
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else
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{
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uno_Mapping * mapping = const_cast< Mapping * >( &m_uno2java );
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uno_registerMapping(
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&mapping, Bridge_free,
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(uno_Environment *)m_uno_env, m_java_env, 0 );
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}
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}
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}
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//______________________________________________________________________________
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void Bridge::release() const SAL_THROW(())
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{
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if (! osl_atomic_decrement( &m_ref ))
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{
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uno_revokeMapping(
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m_registered_java2uno
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? const_cast< Mapping * >( &m_java2uno )
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: const_cast< Mapping * >( &m_uno2java ) );
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}
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}
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//______________________________________________________________________________
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Bridge::Bridge(
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uno_Environment * java_env, uno_ExtEnvironment * uno_env,
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bool registered_java2uno )
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: m_ref( 1 ),
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m_uno_env( uno_env ),
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m_java_env( java_env ),
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m_registered_java2uno( registered_java2uno )
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{
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// bootstrapping bridge jni_info
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m_jni_info = JNI_info::get_jni_info(
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reinterpret_cast< ::jvmaccess::UnoVirtualMachine * >(
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m_java_env->pContext ) );
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OSL_ASSERT( 0 != m_java_env && 0 != m_uno_env );
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(*((uno_Environment *)m_uno_env)->acquire)( (uno_Environment *)m_uno_env );
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(*m_java_env->acquire)( m_java_env );
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// java2uno
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m_java2uno.acquire = Mapping_acquire;
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m_java2uno.release = Mapping_release;
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m_java2uno.mapInterface = Mapping_map_to_uno;
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m_java2uno.m_bridge = this;
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// uno2java
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m_uno2java.acquire = Mapping_acquire;
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m_uno2java.release = Mapping_release;
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m_uno2java.mapInterface = Mapping_map_to_java;
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m_uno2java.m_bridge = this;
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}
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//______________________________________________________________________________
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Bridge::~Bridge() SAL_THROW(())
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{
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(*m_java_env->release)( m_java_env );
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(*((uno_Environment *)m_uno_env)->release)( (uno_Environment *)m_uno_env );
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}
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//______________________________________________________________________________
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void JNI_context::java_exc_occurred() const
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{
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// !don't rely on JNI_info!
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JLocalAutoRef jo_exc( *this, m_env->ExceptionOccurred() );
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m_env->ExceptionClear();
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OSL_ASSERT( jo_exc.is() );
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if (! jo_exc.is())
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{
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throw BridgeRuntimeError(
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"java exception occurred, but not available!?" +
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get_stack_trace() );
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}
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// call toString(); don't rely on m_jni_info
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jclass jo_class = m_env->FindClass( "java/lang/Object" );
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if (JNI_FALSE != m_env->ExceptionCheck())
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{
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m_env->ExceptionClear();
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throw BridgeRuntimeError(
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"cannot get class java.lang.Object!" + get_stack_trace() );
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}
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JLocalAutoRef jo_Object( *this, jo_class );
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// method Object.toString()
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jmethodID method_Object_toString = m_env->GetMethodID(
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(jclass) jo_Object.get(), "toString", "()Ljava/lang/String;" );
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if (JNI_FALSE != m_env->ExceptionCheck())
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{
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m_env->ExceptionClear();
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throw BridgeRuntimeError(
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"cannot get method id of java.lang.Object.toString()!" +
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get_stack_trace() );
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}
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OSL_ASSERT( 0 != method_Object_toString );
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JLocalAutoRef jo_descr(
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*this, m_env->CallObjectMethodA(
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jo_exc.get(), method_Object_toString, 0 ) );
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if (m_env->ExceptionCheck()) // no chance at all
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{
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m_env->ExceptionClear();
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throw BridgeRuntimeError(
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"error examining java exception object!" +
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get_stack_trace() );
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}
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jsize len = m_env->GetStringLength( (jstring) jo_descr.get() );
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SAL_WNODEPRECATED_DECLARATIONS_PUSH
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auto_ptr< rtl_mem > ustr_mem(
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rtl_mem::allocate(
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sizeof (rtl_uString) + (len * sizeof (sal_Unicode)) ) );
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SAL_WNODEPRECATED_DECLARATIONS_POP
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rtl_uString * ustr = (rtl_uString *)ustr_mem.get();
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m_env->GetStringRegion( (jstring) jo_descr.get(), 0, len, ustr->buffer );
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if (m_env->ExceptionCheck())
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{
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m_env->ExceptionClear();
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throw BridgeRuntimeError(
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"invalid java string object!" + get_stack_trace() );
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}
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ustr->refCount = 1;
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ustr->length = len;
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ustr->buffer[ len ] = '\0';
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OUString message( (rtl_uString *)ustr_mem.release(), SAL_NO_ACQUIRE );
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throw BridgeRuntimeError( message + get_stack_trace( jo_exc.get() ) );
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}
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//______________________________________________________________________________
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void JNI_context::getClassForName(
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jclass * classClass, jmethodID * methodForName) const
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{
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jclass c = m_env->FindClass("java/lang/Class");
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if (c != 0) {
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*methodForName = m_env->GetStaticMethodID(
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c, "forName",
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"(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;");
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}
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*classClass = c;
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}
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//______________________________________________________________________________
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jclass JNI_context::findClass(
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char const * name, jclass classClass, jmethodID methodForName,
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bool inException) const
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{
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jclass c = 0;
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JLocalAutoRef s(*this, m_env->NewStringUTF(name));
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if (s.is()) {
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jvalue a[3];
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a[0].l = s.get();
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a[1].z = JNI_FALSE;
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a[2].l = m_class_loader;
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c = static_cast< jclass >(
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m_env->CallStaticObjectMethodA(classClass, methodForName, a));
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}
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if (!inException) {
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ensure_no_exception();
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}
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return c;
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}
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//______________________________________________________________________________
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OUString JNI_context::get_stack_trace( jobject jo_exc ) const
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{
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JLocalAutoRef jo_JNI_proxy(
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*this,
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find_class( *this, "com.sun.star.bridges.jni_uno.JNI_proxy", true ) );
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if (assert_no_exception())
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{
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// static method JNI_proxy.get_stack_trace()
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jmethodID method = m_env->GetStaticMethodID(
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(jclass) jo_JNI_proxy.get(), "get_stack_trace",
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"(Ljava/lang/Throwable;)Ljava/lang/String;" );
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if (assert_no_exception() && (0 != method))
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{
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jvalue arg;
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arg.l = jo_exc;
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JLocalAutoRef jo_stack_trace(
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*this, m_env->CallStaticObjectMethodA(
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(jclass) jo_JNI_proxy.get(), method, &arg ) );
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if (assert_no_exception())
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{
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jsize len =
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m_env->GetStringLength( (jstring) jo_stack_trace.get() );
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SAL_WNODEPRECATED_DECLARATIONS_PUSH
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auto_ptr< rtl_mem > ustr_mem(
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rtl_mem::allocate(
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sizeof (rtl_uString) + (len * sizeof (sal_Unicode)) ) );
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SAL_WNODEPRECATED_DECLARATIONS_POP
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rtl_uString * ustr = (rtl_uString *)ustr_mem.get();
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m_env->GetStringRegion(
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(jstring) jo_stack_trace.get(), 0, len, ustr->buffer );
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if (assert_no_exception())
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{
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ustr->refCount = 1;
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ustr->length = len;
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ustr->buffer[ len ] = '\0';
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return OUString(
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(rtl_uString *)ustr_mem.release(), SAL_NO_ACQUIRE );
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}
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}
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}
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}
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return OUString();
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}
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}
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using namespace ::jni_uno;
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extern "C"
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{
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namespace
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{
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//------------------------------------------------------------------------------
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void SAL_CALL java_env_disposing( uno_Environment * java_env )
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SAL_THROW_EXTERN_C()
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{
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::jvmaccess::UnoVirtualMachine * machine =
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reinterpret_cast< ::jvmaccess::UnoVirtualMachine * >(
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java_env->pContext );
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java_env->pContext = 0;
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machine->release();
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}
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}
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#ifdef DISABLE_DYNLOADING
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#define uno_initEnvironment java_uno_initEnvironment
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#endif
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//------------------------------------------------------------------------------
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SAL_DLLPUBLIC_EXPORT void SAL_CALL uno_initEnvironment( uno_Environment * java_env )
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SAL_THROW_EXTERN_C()
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{
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java_env->environmentDisposing = java_env_disposing;
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java_env->pExtEnv = 0; // no extended support
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OSL_ASSERT( 0 != java_env->pContext );
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::jvmaccess::UnoVirtualMachine * machine =
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reinterpret_cast< ::jvmaccess::UnoVirtualMachine * >(
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java_env->pContext );
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machine->acquire();
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}
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#ifdef DISABLE_DYNLOADING
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#define uno_ext_getMapping java_uno_ext_getMapping
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#endif
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//------------------------------------------------------------------------------
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SAL_DLLPUBLIC_EXPORT void SAL_CALL uno_ext_getMapping(
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uno_Mapping ** ppMapping, uno_Environment * pFrom, uno_Environment * pTo )
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SAL_THROW_EXTERN_C()
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{
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OSL_ASSERT( 0 != ppMapping && 0 != pFrom && 0 != pTo );
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if (0 != *ppMapping)
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{
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(*(*ppMapping)->release)( *ppMapping );
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*ppMapping = 0;
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}
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OSL_ASSERT( JNI_FALSE == sal_False );
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OSL_ASSERT( JNI_TRUE == sal_True );
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OSL_ASSERT( sizeof (jboolean) == sizeof (sal_Bool) );
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OSL_ASSERT( sizeof (jchar) == sizeof (sal_Unicode) );
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OSL_ASSERT( sizeof (jdouble) == sizeof (double) );
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OSL_ASSERT( sizeof (jfloat) == sizeof (float) );
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OSL_ASSERT( sizeof (jbyte) == sizeof (sal_Int8) );
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OSL_ASSERT( sizeof (jshort) == sizeof (sal_Int16) );
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OSL_ASSERT( sizeof (jint) == sizeof (sal_Int32) );
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OSL_ASSERT( sizeof (jlong) == sizeof (sal_Int64) );
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if ((JNI_FALSE == sal_False) &&
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(JNI_TRUE == sal_True) &&
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(sizeof (jboolean) == sizeof (sal_Bool)) &&
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(sizeof (jchar) == sizeof (sal_Unicode)) &&
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(sizeof (jdouble) == sizeof (double)) &&
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(sizeof (jfloat) == sizeof (float)) &&
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(sizeof (jbyte) == sizeof (sal_Int8)) &&
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(sizeof (jshort) == sizeof (sal_Int16)) &&
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(sizeof (jint) == sizeof (sal_Int32)) &&
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(sizeof (jlong) == sizeof (sal_Int64)))
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{
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OUString const & from_env_typename =
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OUString::unacquired( &pFrom->pTypeName );
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OUString const & to_env_typename =
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OUString::unacquired( &pTo->pTypeName );
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uno_Mapping * mapping = 0;
|
|
|
|
try
|
|
{
|
|
if ( from_env_typename == UNO_LB_JAVA && to_env_typename == UNO_LB_UNO )
|
|
{
|
|
Bridge * bridge =
|
|
new Bridge( pFrom, pTo->pExtEnv, true ); // ref count = 1
|
|
mapping = &bridge->m_java2uno;
|
|
uno_registerMapping(
|
|
&mapping, Bridge_free,
|
|
pFrom, (uno_Environment *)pTo->pExtEnv, 0 );
|
|
}
|
|
else if ( from_env_typename == UNO_LB_UNO && to_env_typename == UNO_LB_JAVA )
|
|
{
|
|
Bridge * bridge =
|
|
new Bridge( pTo, pFrom->pExtEnv, false ); // ref count = 1
|
|
mapping = &bridge->m_uno2java;
|
|
uno_registerMapping(
|
|
&mapping, Bridge_free,
|
|
(uno_Environment *)pFrom->pExtEnv, pTo, 0 );
|
|
}
|
|
}
|
|
catch (const BridgeRuntimeError & err)
|
|
{
|
|
#if OSL_DEBUG_LEVEL > 0
|
|
OString cstr_msg(
|
|
OUStringToOString(
|
|
"[jni_uno bridge error] " + err.m_message,
|
|
RTL_TEXTENCODING_ASCII_US ) );
|
|
OSL_FAIL( cstr_msg.getStr() );
|
|
#else
|
|
(void) err; // unused
|
|
#endif
|
|
}
|
|
catch (const ::jvmaccess::VirtualMachine::AttachGuard::CreationException &)
|
|
{
|
|
OSL_FAIL(
|
|
"[jni_uno bridge error] attaching current thread "
|
|
"to java failed!" );
|
|
}
|
|
|
|
*ppMapping = mapping;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|