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-rw-r--r--bridges/source/cpp_uno/gcc3_linux_x86-64/rtti.cxx274
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diff --git a/bridges/source/cpp_uno/gcc3_linux_x86-64/rtti.cxx b/bridges/source/cpp_uno/gcc3_linux_x86-64/rtti.cxx
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index 000000000..f36ca6431
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+++ b/bridges/source/cpp_uno/gcc3_linux_x86-64/rtti.cxx
@@ -0,0 +1,274 @@
+/* -*- 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>
+
+#include <cassert>
+#include <memory>
+#include <mutex>
+#include <typeinfo>
+#include <unordered_map>
+#include <utility>
+#include <vector>
+
+#include <dlfcn.h>
+
+#include <rtl/strbuf.hxx>
+#include <rtl/ustring.hxx>
+#include <sal/log.hxx>
+#include <typelib/typedescription.h>
+#include <o3tl/string_view.hxx>
+
+#include "rtti.hxx"
+#include "share.hxx"
+
+namespace {
+
+class Generated {
+public:
+ virtual ~Generated() {};
+
+ virtual std::type_info * get() const = 0;
+};
+
+class GeneratedPlain: public Generated {
+public:
+ GeneratedPlain(std::unique_ptr<std::type_info> && info): info_(std::move(info)) {};
+
+ std::type_info * get() const override { return info_.get(); }
+
+private:
+ std::unique_ptr<std::type_info> info_;
+};
+
+class GeneratedPad: public Generated {
+public:
+ GeneratedPad(std::unique_ptr<char[]> && pad): pad_(std::move(pad)) {};
+
+ ~GeneratedPad() override { get()->~type_info(); }
+
+ std::type_info * get() const override final
+ { return reinterpret_cast<std::type_info *>(pad_.get()); }
+
+private:
+ std::unique_ptr<char[]> pad_;
+};
+
+class RTTI
+{
+ typedef std::unordered_map< OUString, std::type_info * > t_rtti_map;
+
+ t_rtti_map m_rttis;
+ std::vector<OString> m_rttiNames;
+ std::unordered_map<OUString, std::unique_ptr<Generated>> m_generatedRttis;
+
+#if !defined ANDROID
+ void * m_hApp;
+#endif
+
+public:
+ RTTI();
+ ~RTTI();
+
+ std::type_info * getRTTI(typelib_TypeDescription const &);
+};
+
+RTTI::RTTI()
+#if !defined ANDROID
+ : m_hApp( dlopen( nullptr, RTLD_LAZY ) )
+#endif
+{
+}
+
+RTTI::~RTTI()
+{
+#if !defined ANDROID
+ dlclose( m_hApp );
+#endif
+}
+
+std::type_info * RTTI::getRTTI(typelib_TypeDescription const & pTypeDescr)
+{
+ OUString const & unoName = OUString::unacquired(&pTypeDescr.pTypeName);
+
+ t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) );
+ if (iFind != m_rttis.end())
+ return iFind->second;
+
+ std::type_info * rtti;
+
+ // RTTI symbol
+ OStringBuffer buf( 64 );
+ buf.append( "_ZTIN" );
+ sal_Int32 index = 0;
+ do
+ {
+ std::u16string_view token( o3tl::getToken(unoName, 0, '.', index ) );
+ buf.append( static_cast<sal_Int32>(token.size()) );
+ OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
+ buf.append( c_token );
+ }
+ while (index >= 0);
+ buf.append( 'E' );
+
+ OString symName( buf.makeStringAndClear() );
+#if !defined ANDROID
+ rtti = static_cast<std::type_info *>(dlsym( m_hApp, symName.getStr() ));
+#else
+ rtti = static_cast<std::type_info *>(dlsym( RTLD_DEFAULT, symName.getStr() ));
+#endif
+
+ if (rtti)
+ {
+ std::pair< t_rtti_map::iterator, bool > insertion (
+ m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
+ SAL_WARN_IF( !insertion.second, "bridges", "key " << unoName << " already in rtti map" );
+ return rtti;
+ }
+
+ // try to lookup the symbol in the generated rtti map
+ auto iFind2( m_generatedRttis.find( unoName ) );
+ if (iFind2 != m_generatedRttis.end())
+ {
+ // taking already generated rtti
+ rtti = iFind2->second->get();
+ return rtti;
+ }
+
+ // we must generate it !
+ // symbol and rtti-name is nearly identical,
+ // the symbol is prefixed with _ZTI
+ char const * rttiName = symName.getStr() +4;
+
+ SAL_INFO("bridges", "Generated rtti for" << rttiName);
+
+ std::unique_ptr<Generated> newRtti;
+ switch (pTypeDescr.eTypeClass) {
+ case typelib_TypeClass_EXCEPTION:
+ {
+ typelib_CompoundTypeDescription const & ctd
+ = reinterpret_cast<
+ typelib_CompoundTypeDescription const &>(
+ pTypeDescr);
+ if (ctd.pBaseTypeDescription)
+ {
+ // ensure availability of base
+ std::type_info * base_rtti = getRTTI(
+ ctd.pBaseTypeDescription->aBase);
+ m_rttiNames.emplace_back(OString(rttiName));
+ std::unique_ptr<std::type_info> info(
+ new __cxxabiv1::__si_class_type_info(
+ m_rttiNames.back().getStr(), static_cast<__cxxabiv1::__class_type_info *>(base_rtti) ));
+ newRtti.reset(new GeneratedPlain(std::move(info)));
+ }
+ else
+ {
+ // this class has no base class
+ m_rttiNames.emplace_back(OString(rttiName));
+ std::unique_ptr<std::type_info> info(
+ new __cxxabiv1::__class_type_info(m_rttiNames.back().getStr()));
+ newRtti.reset(new GeneratedPlain(std::move(info)));
+ }
+ break;
+ }
+ case typelib_TypeClass_INTERFACE:
+ {
+ typelib_InterfaceTypeDescription const & itd
+ = reinterpret_cast<
+ typelib_InterfaceTypeDescription const &>(
+ pTypeDescr);
+ std::vector<std::type_info *> bases;
+ for (sal_Int32 i = 0; i != itd.nBaseTypes; ++i) {
+ bases.push_back(getRTTI(itd.ppBaseTypes[i]->aBase));
+ }
+ switch (itd.nBaseTypes) {
+ case 0:
+ {
+ m_rttiNames.emplace_back(OString(rttiName));
+ std::unique_ptr<std::type_info> info(
+ new __cxxabiv1::__class_type_info(
+ m_rttiNames.back().getStr()));
+ newRtti.reset(new GeneratedPlain(std::move(info)));
+ break;
+ }
+ case 1:
+ {
+ m_rttiNames.emplace_back(OString(rttiName));
+ std::unique_ptr<std::type_info> info(
+ new __cxxabiv1::__si_class_type_info(
+ m_rttiNames.back().getStr(),
+ static_cast<
+ __cxxabiv1::__class_type_info *>(
+ bases[0])));
+ newRtti.reset(new GeneratedPlain(std::move(info)));
+ break;
+ }
+ default:
+ {
+ m_rttiNames.emplace_back(OString(rttiName));
+ auto pad = std::make_unique<char[]>(
+ sizeof (__cxxabiv1::__vmi_class_type_info)
+ + ((itd.nBaseTypes - 1)
+ * sizeof (
+ __cxxabiv1::__base_class_type_info)));
+ __cxxabiv1::__vmi_class_type_info * info
+ = new(pad.get())
+ __cxxabiv1::__vmi_class_type_info(
+ m_rttiNames.back().getStr(),
+ __cxxabiv1::__vmi_class_type_info::__flags_unknown_mask);
+ info->__base_count = itd.nBaseTypes;
+ for (sal_Int32 i = 0; i != itd.nBaseTypes; ++i)
+ {
+ info->__base_info[i].__base_type
+ = static_cast<
+ __cxxabiv1::__class_type_info *>(
+ bases[i]);
+ info->__base_info[i].__offset_flags
+ = (__cxxabiv1::__base_class_type_info::__public_mask
+ | ((8 * i) << __cxxabiv1::__base_class_type_info::__offset_shift));
+ }
+ newRtti.reset(new GeneratedPad(std::move(pad)));
+ break;
+ }
+ }
+ break;
+ }
+ default:
+ assert(false); // cannot happen
+ }
+ rtti = newRtti->get();
+ if (newRtti) {
+ auto insertion (
+ m_generatedRttis.emplace(unoName, std::move(newRtti)));
+ SAL_WARN_IF( !insertion.second, "bridges", "key " << unoName << " already in generated rtti map" );
+ }
+
+ return rtti;
+}
+
+}
+
+std::type_info * x86_64::getRtti(typelib_TypeDescription const & type) {
+ static RTTI theRttiFactory;
+ static std::mutex theMutex;
+ std::lock_guard aGuard(theMutex);
+ return theRttiFactory.getRTTI(type);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-23 12:10:27 +0000