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Diffstat (limited to '')
| -rw-r--r-- | javaunohelper/source/preload.cxx | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/javaunohelper/source/preload.cxx b/javaunohelper/source/preload.cxx new file mode 100644 index 000000000..f73b44b34 --- /dev/null +++ b/javaunohelper/source/preload.cxx @@ -0,0 +1,130 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <sal/config.h> + +#if defined __clang__ +#pragma clang diagnostic push +#pragma clang diagnostic ignored "-Wunknown-attributes" +#endif +#include <jni.h> +#if defined __clang__ +#pragma clang diagnostic pop +#endif + +#include <rtl/ustring.hxx> +#include <osl/module.hxx> + +#include "juhx-export-types.hxx" + +// In retrospect, the reason to create a juh wrapper around the juhx library was +// probably because java.lang.System.loadLibrary uses RTLD_LOCAL, so uniqueness +// of GCC RTTI symbols needed for exception handling would not be guaranteed. + +#if ! defined SAL_DLLPREFIX +#define SAL_DLLPREFIX "" +#endif + + +extern "C" +{ + +static javaunohelper::detail::Func_writeInfo * s_writeInfo; +static javaunohelper::detail::Func_getFactory * s_getFactory; +static javaunohelper::detail::Func_bootstrap * s_bootstrap; +static bool s_inited = false; + +extern "C" { static void thisModule() {} } + + +static bool inited_juhx( JNIEnv * jni_env ) +{ + if (s_inited) + return true; + osl::Module aModule; + if (!aModule.loadRelative(&thisModule, SAL_DLLPREFIX "juhx" SAL_DLLEXTENSION, SAL_LOADMODULE_LAZY | SAL_LOADMODULE_GLOBAL)) + { + jclass c = jni_env->FindClass( "java/lang/RuntimeException" ); + jni_env->ThrowNew( + c, "error loading " SAL_DLLPREFIX "juhx" SAL_DLLEXTENSION "!" ); + return false; + } + else + { + OUString symbol = + "Java_com_sun_star_comp_helper_SharedLibraryLoader_component_1writeInfo"; + s_writeInfo = reinterpret_cast<javaunohelper::detail::Func_writeInfo *>(aModule.getFunctionSymbol(symbol)); + symbol = + "Java_com_sun_star_comp_helper_SharedLibraryLoader_component_1getFactory"; + s_getFactory = reinterpret_cast<javaunohelper::detail::Func_getFactory *>(aModule.getFunctionSymbol(symbol)); + symbol = + "Java_com_sun_star_comp_helper_Bootstrap_cppuhelper_1bootstrap"; + s_bootstrap = + reinterpret_cast<javaunohelper::detail::Func_bootstrap *>(aModule.getFunctionSymbol(symbol)); + + if (nullptr == s_writeInfo || + nullptr == s_getFactory || + nullptr == s_bootstrap) + { + jclass c = jni_env->FindClass( "java/lang/RuntimeException" ); + jni_env->ThrowNew( + c, "error resolving symbols of " SAL_DLLPREFIX "juhx" SAL_DLLEXTENSION "!" ); + return false; + } + aModule.release(); + } + s_inited = true; + return true; +} + + +SAL_DLLPUBLIC_EXPORT jboolean JNICALL +Java_com_sun_star_comp_helper_SharedLibraryLoader_component_1writeInfo( + JNIEnv * pJEnv, jclass jClass, jstring jLibName, jobject jSMgr, + jobject jRegKey, jobject loader ) +{ + if (inited_juhx( pJEnv )) + return (*s_writeInfo)( + pJEnv, jClass, jLibName, jSMgr, jRegKey, loader ); + return JNI_FALSE; +} + +SAL_DLLPUBLIC_EXPORT jobject JNICALL +Java_com_sun_star_comp_helper_SharedLibraryLoader_component_1getFactory( + JNIEnv * pJEnv, jclass jClass, jstring jLibName, jstring jImplName, + jobject jSMgr, jobject jRegKey, jobject loader ) +{ + if (inited_juhx( pJEnv )) + return (*s_getFactory)( + pJEnv, jClass, jLibName, jImplName, jSMgr, jRegKey, loader ); + return nullptr; +} + +SAL_DLLPUBLIC_EXPORT jobject JNICALL +Java_com_sun_star_comp_helper_Bootstrap_cppuhelper_1bootstrap( + JNIEnv * jni_env, jclass jClass, jstring juno_rc, jobjectArray jpairs, + jobject loader ) +{ + if (inited_juhx( jni_env )) + return (*s_bootstrap)( jni_env, jClass, juno_rc, jpairs, loader ); + return nullptr; +} +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |