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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:51:28 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:51:28 +0000
commit940b4d1848e8c70ab7642901a68594e8016caffc (patch)
treeeb72f344ee6c3d9b80a7ecc079ea79e9fba8676d /cppu/source/uno/lbmap.cxx
parentInitial commit. (diff)
downloadlibreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.tar.xz
libreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.zip
Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'cppu/source/uno/lbmap.cxx')
-rw-r--r--cppu/source/uno/lbmap.cxx752
1 files changed, 752 insertions, 0 deletions
diff --git a/cppu/source/uno/lbmap.cxx b/cppu/source/uno/lbmap.cxx
new file mode 100644
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+++ b/cppu/source/uno/lbmap.cxx
@@ -0,0 +1,752 @@
+/* -*- 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 .
+ */
+
+#ifdef DISABLE_DYNLOADING
+#include <config_java.h>
+#endif
+
+#include "IdentityMapping.hxx"
+
+#include <cassert>
+#include <set>
+#include <unordered_map>
+
+#include <rtl/ustring.hxx>
+#include <rtl/ustrbuf.hxx>
+#include <osl/module.hxx>
+#include <osl/diagnose.h>
+#include <osl/mutex.hxx>
+#include <osl/interlck.h>
+#include <sal/log.hxx>
+
+#include <uno/dispatcher.h>
+#include <uno/mapping.h>
+#include <uno/lbnames.h>
+#include <uno/environment.hxx>
+
+#include <typelib/typedescription.h>
+
+#include <cppu/EnvDcp.hxx>
+#include "cascade_mapping.hxx"
+#include "loadmodule.hxx"
+
+using namespace std;
+using namespace osl;
+using namespace com::sun::star::uno;
+
+namespace cppu
+{
+
+namespace {
+
+class Mapping
+{
+ uno_Mapping * _pMapping;
+
+public:
+ inline explicit Mapping( uno_Mapping * pMapping = nullptr );
+ inline Mapping( const Mapping & rMapping );
+ Mapping(Mapping && other) noexcept : _pMapping(other._pMapping)
+ { other._pMapping = nullptr; }
+ inline ~Mapping();
+ inline Mapping & operator = ( uno_Mapping * pMapping );
+ Mapping & operator = ( const Mapping & rMapping )
+ { return operator = ( rMapping._pMapping ); }
+ Mapping & operator =(Mapping && other) noexcept {
+ if (_pMapping != nullptr) {
+ (*_pMapping->release)(_pMapping);
+ }
+ _pMapping = other._pMapping;
+ other._pMapping = nullptr;
+ return *this;
+ }
+ uno_Mapping * get() const
+ { return _pMapping; }
+ bool is() const
+ { return (_pMapping != nullptr); }
+};
+
+}
+
+inline Mapping::Mapping( uno_Mapping * pMapping )
+ : _pMapping( pMapping )
+{
+ if (_pMapping)
+ (*_pMapping->acquire)( _pMapping );
+}
+
+inline Mapping::Mapping( const Mapping & rMapping )
+ : _pMapping( rMapping._pMapping )
+{
+ if (_pMapping)
+ (*_pMapping->acquire)( _pMapping );
+}
+
+inline Mapping::~Mapping()
+{
+ if (_pMapping)
+ (*_pMapping->release)( _pMapping );
+}
+
+inline Mapping & Mapping::operator = ( uno_Mapping * pMapping )
+{
+ if (pMapping)
+ (*pMapping->acquire)( pMapping );
+ if (_pMapping)
+ (*_pMapping->release)( _pMapping );
+ _pMapping = pMapping;
+ return *this;
+}
+
+namespace {
+
+struct MappingEntry
+{
+ sal_Int32 nRef;
+ uno_Mapping * pMapping;
+ uno_freeMappingFunc freeMapping;
+ OUString aMappingName;
+
+ MappingEntry(
+ uno_Mapping * pMapping_, uno_freeMappingFunc freeMapping_,
+ const OUString & rMappingName_ )
+ : nRef( 1 )
+ , pMapping( pMapping_ )
+ , freeMapping( freeMapping_ )
+ , aMappingName( rMappingName_ )
+ {}
+};
+
+struct FctPtrHash
+{
+ size_t operator()( uno_Mapping * pKey ) const
+ { return reinterpret_cast<size_t>(pKey); }
+};
+
+}
+
+typedef std::unordered_map<
+ OUString, MappingEntry * > t_OUString2Entry;
+typedef std::unordered_map<
+ uno_Mapping *, MappingEntry *, FctPtrHash > t_Mapping2Entry;
+
+namespace {
+
+struct MappingsData
+{
+ Mutex aMappingsMutex;
+ t_OUString2Entry aName2Entry;
+ t_Mapping2Entry aMapping2Entry;
+
+ Mutex aCallbacksMutex;
+ set< uno_getMappingFunc >
+ aCallbacks;
+
+ Mutex aNegativeLibsMutex;
+ set<OUString> aNegativeLibs;
+};
+
+}
+
+static MappingsData & getMappingsData()
+{
+ //TODO This memory is leaked; see #i63473# for when this should be
+ // changed again:
+ static MappingsData * s_p(new MappingsData);
+
+ return *s_p;
+}
+
+namespace {
+
+/**
+ * This class mediates two different mapping via uno, e.g. form any language to uno,
+ * then from uno to any other language.
+ */
+struct uno_Mediate_Mapping : public uno_Mapping
+{
+ sal_Int32 nRef;
+
+ Environment aFrom;
+ Environment aTo;
+
+ Mapping aFrom2Uno;
+ Mapping aUno2To;
+
+ OUString aAddPurpose;
+
+ uno_Mediate_Mapping(
+ const Environment & rFrom_, const Environment & rTo_,
+ const Mapping & rFrom2Uno_, const Mapping & rUno2To_,
+ const OUString & rAddPurpose );
+};
+
+}
+
+extern "C"
+{
+
+static void mediate_free( uno_Mapping * pMapping )
+{
+ delete static_cast< uno_Mediate_Mapping * >( pMapping );
+}
+
+static void mediate_acquire( uno_Mapping * pMapping )
+{
+ if (1 == osl_atomic_increment(
+ & static_cast< uno_Mediate_Mapping * >( pMapping )->nRef ))
+ {
+ uno_registerMapping(
+ &pMapping, mediate_free,
+ static_cast< uno_Mediate_Mapping * >( pMapping )->aFrom.get(),
+ static_cast< uno_Mediate_Mapping * >( pMapping )->aTo.get(),
+ static_cast< uno_Mediate_Mapping * >( pMapping )->aAddPurpose.pData );
+ }
+}
+
+static void mediate_release( uno_Mapping * pMapping )
+{
+ if (! osl_atomic_decrement(
+ & static_cast< uno_Mediate_Mapping * >( pMapping )->nRef ))
+ {
+ uno_revokeMapping( pMapping );
+ }
+}
+
+static void mediate_mapInterface(
+ uno_Mapping * pMapping,
+ void ** ppOut, void * pInterface,
+ typelib_InterfaceTypeDescription * pInterfaceTypeDescr )
+{
+ OSL_ENSURE( pMapping && ppOut, "### null ptr!" );
+ if (!(pMapping && ppOut))
+ return;
+
+ uno_Mediate_Mapping * that = static_cast< uno_Mediate_Mapping * >( pMapping );
+ uno_Mapping * pFrom2Uno = that->aFrom2Uno.get();
+
+ uno_Interface * pUnoI = nullptr;
+ (*pFrom2Uno->mapInterface)( pFrom2Uno, reinterpret_cast<void **>(&pUnoI), pInterface, pInterfaceTypeDescr );
+ if (nullptr == pUnoI)
+ {
+ void * pOut = *ppOut;
+ if (nullptr != pOut)
+ {
+ uno_ExtEnvironment * pTo = that->aTo.get()->pExtEnv;
+ OSL_ENSURE( nullptr != pTo, "### cannot release out interface: leaking!" );
+ if (nullptr != pTo)
+ (*pTo->releaseInterface)( pTo, pOut );
+ *ppOut = nullptr; // set to 0 anyway, because mapping was not successful!
+ }
+ }
+ else
+ {
+ uno_Mapping * pUno2To = that->aUno2To.get();
+ (*pUno2To->mapInterface)( pUno2To, ppOut, pUnoI, pInterfaceTypeDescr );
+ (*pUnoI->release)( pUnoI );
+ }
+}
+}
+
+uno_Mediate_Mapping::uno_Mediate_Mapping(
+ const Environment & rFrom_, const Environment & rTo_,
+ const Mapping & rFrom2Uno_, const Mapping & rUno2To_,
+ const OUString & rAddPurpose_ )
+ : nRef( 1 )
+ , aFrom( rFrom_ )
+ , aTo( rTo_ )
+ , aFrom2Uno( rFrom2Uno_ )
+ , aUno2To( rUno2To_ )
+ , aAddPurpose( rAddPurpose_ )
+{
+ uno_Mapping::acquire = mediate_acquire;
+ uno_Mapping::release = mediate_release;
+ uno_Mapping::mapInterface = mediate_mapInterface;
+}
+
+
+static OUString getMappingName(
+ const Environment & rFrom, const Environment & rTo, const OUString & rAddPurpose )
+{
+ OUStringBuffer aKey( 64 );
+ aKey.append( rAddPurpose );
+ aKey.append( ';' );
+ aKey.append( rFrom.getTypeName() );
+ aKey.append( '[' );
+ aKey.append( reinterpret_cast< sal_IntPtr >(rFrom.get()), 16 );
+ aKey.append( "];" );
+ aKey.append( rTo.getTypeName() );
+ aKey.append( '[' );
+ aKey.append( reinterpret_cast< sal_IntPtr >(rTo.get()), 16 );
+ aKey.append( ']' );
+ return aKey.makeStringAndClear();
+}
+
+static OUString getBridgeName(
+ const Environment & rFrom, const Environment & rTo, const OUString & rAddPurpose )
+{
+ OUStringBuffer aBridgeName( 16 );
+ if (!rAddPurpose.isEmpty())
+ {
+ aBridgeName.append( rAddPurpose );
+ aBridgeName.append( '_' );
+ }
+ aBridgeName.append( EnvDcp::getTypeName(rFrom.getTypeName()) );
+ aBridgeName.append( '_' );
+ aBridgeName.append( EnvDcp::getTypeName(rTo.getTypeName()) );
+ return aBridgeName.makeStringAndClear();
+}
+
+#ifndef DISABLE_DYNLOADING
+
+static void setNegativeBridge( const OUString & rBridgeName )
+{
+ MappingsData & rData = getMappingsData();
+ MutexGuard aGuard( rData.aNegativeLibsMutex );
+ rData.aNegativeLibs.insert( rBridgeName );
+}
+
+#endif
+
+#ifdef DISABLE_DYNLOADING
+
+static uno_ext_getMappingFunc selectMapFunc( const OUString & rBridgeName )
+{
+ if (rBridgeName.equalsAscii( CPPU_CURRENT_LANGUAGE_BINDING_NAME "_uno" ))
+ return CPPU_ENV_uno_ext_getMapping;
+#if HAVE_FEATURE_JAVA
+ if (rBridgeName.equalsAscii( "java" "_uno" ))
+ return java_uno_ext_getMapping;
+#endif
+
+#if 0
+ // I don't think the affine or log bridges will be needed on any
+ // DISABLE_DYNLOADING platform (iOS at least, possibly Android), but if
+ // somebody wants to experiment, need to find out then whether these are
+ // needed.
+ if (rBridgeName.equalsAscii( "affine_uno_uno" ))
+ return affine_uno_uno_ext_getMapping;
+ if (rBridgeName.equalsAscii( "log_uno_uno" ))
+ return log_uno_uno_ext_getMapping;
+#endif
+ return 0;
+}
+
+#else
+
+static bool loadModule(osl::Module & rModule, const OUString & rBridgeName)
+{
+ bool bNeg;
+ {
+ MappingsData & rData = getMappingsData();
+ MutexGuard aGuard( rData.aNegativeLibsMutex );
+ const auto iFind( rData.aNegativeLibs.find( rBridgeName ) );
+ bNeg = (iFind != rData.aNegativeLibs.end());
+ }
+
+ if (!bNeg)
+ {
+ bool bModule;
+ try {
+ bModule = cppu::detail::loadModule(rModule, rBridgeName);
+ }
+ catch(...) {
+ // convert throw to return false
+ bModule = false;
+ }
+
+ if (bModule)
+ return true;
+
+ setNegativeBridge( rBridgeName ); // no load again
+ }
+ return false;
+}
+
+#endif
+
+
+static Mapping loadExternalMapping(
+ const Environment & rFrom, const Environment & rTo, const OUString & rAddPurpose )
+{
+ OSL_ASSERT( rFrom.is() && rTo.is() );
+ if (rFrom.is() && rTo.is())
+ {
+#ifdef DISABLE_DYNLOADING
+ OUString aName;
+ uno_ext_getMappingFunc fpGetMapFunc = 0;
+
+ if (EnvDcp::getTypeName(rFrom.getTypeName()) == UNO_LB_UNO)
+ {
+ aName = getBridgeName( rTo, rFrom, rAddPurpose );
+ fpGetMapFunc = selectMapFunc( aName );
+ }
+ if (! fpGetMapFunc)
+ {
+ aName = getBridgeName( rFrom, rTo, rAddPurpose );
+ fpGetMapFunc = selectMapFunc( aName );
+ }
+ if (! fpGetMapFunc)
+ {
+ aName = getBridgeName( rTo, rFrom, rAddPurpose );
+ fpGetMapFunc = selectMapFunc( aName );
+ }
+
+ if (! fpGetMapFunc)
+ {
+ SAL_INFO("cppu", "Could not find mapfunc for " << aName);
+ return Mapping();
+ }
+
+ if (fpGetMapFunc)
+ {
+ Mapping aExt;
+ (*fpGetMapFunc)( (uno_Mapping **)&aExt, rFrom.get(), rTo.get() );
+ OSL_ASSERT( aExt.is() );
+ if (aExt.is())
+ return aExt;
+ }
+#else
+ // find proper lib
+ osl::Module aModule;
+ bool bModule(false);
+ OUString aName;
+
+ if ( EnvDcp::getTypeName(rFrom.getTypeName()) == UNO_LB_UNO )
+ {
+ aName = getBridgeName( rTo, rFrom, rAddPurpose );
+ bModule = loadModule( aModule, aName );
+ }
+ if (!bModule)
+ {
+ aName = getBridgeName( rFrom, rTo, rAddPurpose );
+ bModule = loadModule( aModule, aName );
+ }
+ if (!bModule)
+ {
+ aName = getBridgeName( rTo, rFrom, rAddPurpose );
+ bModule = loadModule( aModule, aName );
+ }
+
+ if (bModule)
+ {
+ uno_ext_getMappingFunc fpGetMapFunc =
+ reinterpret_cast<uno_ext_getMappingFunc>(aModule.getSymbol( UNO_EXT_GETMAPPING ));
+
+ if (fpGetMapFunc)
+ {
+ Mapping aExt;
+ (*fpGetMapFunc)( reinterpret_cast<uno_Mapping **>(&aExt), rFrom.get(), rTo.get() );
+ OSL_ASSERT( aExt.is() );
+ if (aExt.is())
+ {
+ aModule.release();
+ return aExt;
+ }
+ }
+ aModule.unload();
+ setNegativeBridge( aName );
+ }
+#endif
+ }
+ return Mapping();
+}
+
+
+static Mapping getDirectMapping(
+ const Environment & rFrom, const Environment & rTo, const OUString & rAddPurpose = OUString() )
+
+{
+ OSL_ASSERT( rFrom.is() && rTo.is() );
+ if (rFrom.is() && rTo.is())
+ {
+ MappingsData & rData = getMappingsData();
+ ClearableMutexGuard aGuard( rData.aMappingsMutex );
+
+ // try to find registered mapping
+ const t_OUString2Entry::const_iterator iFind( rData.aName2Entry.find(
+ getMappingName( rFrom, rTo, rAddPurpose ) ) );
+
+ if (iFind == rData.aName2Entry.end())
+ {
+ aGuard.clear();
+ return loadExternalMapping( rFrom, rTo, rAddPurpose );
+ }
+ return Mapping( (*iFind).second->pMapping );
+ }
+ return Mapping();
+}
+
+
+static Mapping createMediateMapping(
+ const Environment & rFrom, const Environment & rTo,
+ const Mapping & rFrom2Uno, const Mapping & rUno2To,
+ const OUString & rAddPurpose )
+{
+ uno_Mapping * pRet = new uno_Mediate_Mapping(
+ rFrom, rTo, rFrom2Uno, rUno2To, rAddPurpose ); // ref count initially 1
+ uno_registerMapping(
+ &pRet, mediate_free, rFrom.get(), rTo.get(), rAddPurpose.pData );
+ Mapping aRet( pRet );
+ (*pRet->release)( pRet );
+ return aRet;
+}
+
+static Mapping getMediateMapping(
+ const Environment & rFrom, const Environment & rTo, const OUString & rAddPurpose )
+{
+ Environment aUno;
+ Mapping aUno2To;
+
+ // backwards: from dest to source of mapping chain
+
+ // connect to uno
+ OUString aUnoEnvTypeName( UNO_LB_UNO );
+ if (rTo.getTypeName() == aUnoEnvTypeName) // to is uno
+ {
+ aUno = rTo;
+ // no Uno2To mapping necessary
+ }
+ else
+ {
+ // get registered uno env
+ ::uno_getEnvironment( reinterpret_cast<uno_Environment **>(&aUno), aUnoEnvTypeName.pData, nullptr );
+
+ aUno2To = getDirectMapping( aUno, rTo );
+ // : uno <-> to
+ if (! aUno2To.is())
+ return Mapping();
+ }
+
+ // connect to uno
+ if (!rAddPurpose.isEmpty()) // insert purpose mapping between new ano_uno <-> uno
+ {
+ // create anonymous uno env
+ Environment aAnUno;
+ ::uno_createEnvironment( reinterpret_cast<uno_Environment **>(&aAnUno), aUnoEnvTypeName.pData, nullptr );
+
+ Mapping aAnUno2Uno( getDirectMapping( aAnUno, aUno, rAddPurpose ) );
+ if (! aAnUno2Uno.is())
+ return Mapping();
+
+ if (aUno2To.is()) // to is not uno
+ {
+ // create another purposed mediate mapping
+ aUno2To = createMediateMapping( aAnUno, rTo, aAnUno2Uno, aUno2To, rAddPurpose );
+ // : ano_uno <-> uno <-> to
+ }
+ else
+ {
+ aUno2To = aAnUno2Uno;
+ // : ano_uno <-> to (i.e., uno)
+ }
+ aUno = aAnUno;
+ }
+
+ Mapping aFrom2Uno( getDirectMapping( rFrom, aUno ) );
+ if (aFrom2Uno.is() && aUno2To.is())
+ {
+ return createMediateMapping( rFrom, rTo, aFrom2Uno, aUno2To, rAddPurpose );
+ // : from <-> some uno ...
+ }
+
+ return Mapping();
+}
+}
+
+using namespace ::cppu;
+
+extern "C"
+{
+
+void SAL_CALL uno_getMapping(
+ uno_Mapping ** ppMapping, uno_Environment * pFrom, uno_Environment * pTo,
+ rtl_uString * pAddPurpose )
+ SAL_THROW_EXTERN_C()
+{
+ assert(ppMapping != nullptr);
+ assert(pFrom != nullptr);
+ assert(pTo != nullptr);
+ if (*ppMapping)
+ {
+ (*(*ppMapping)->release)( *ppMapping );
+ *ppMapping = nullptr;
+ }
+
+ Mapping aRet;
+ Environment aFrom( pFrom ), aTo( pTo );
+
+ OUString aAddPurpose;
+ if (pAddPurpose)
+ aAddPurpose = pAddPurpose;
+
+ MappingsData & rData = getMappingsData();
+
+ // try registered mapping
+ {
+ MutexGuard aGuard( rData.aMappingsMutex );
+ const t_OUString2Entry::const_iterator iFind( rData.aName2Entry.find(
+ getMappingName( aFrom, aTo, aAddPurpose ) ) );
+ if (iFind != rData.aName2Entry.end())
+ aRet = (*iFind).second->pMapping;
+ }
+
+ // See if an identity mapping does fit.
+ if (!aRet.is() && pFrom == pTo && aAddPurpose.isEmpty())
+ aRet = createIdentityMapping(pFrom);
+
+ if (!aRet.is())
+ {
+ getCascadeMapping(ppMapping, pFrom, pTo, pAddPurpose);
+
+ if (*ppMapping)
+ return;
+
+ // try callback chain
+ {
+ MutexGuard aGuard(rData.aCallbacksMutex);
+ for (const auto& rCallback : rData.aCallbacks)
+ {
+ (*rCallback)(ppMapping, pFrom, pTo, aAddPurpose.pData);
+ if (*ppMapping)
+ return;
+ }
+ }
+
+ aRet = loadExternalMapping( aFrom, aTo, aAddPurpose ); // direct try
+ if (! aRet.is())
+ aRet = getMediateMapping( aFrom, aTo, aAddPurpose ); // try via uno
+ }
+
+ if (aRet.is())
+ {
+ (*aRet.get()->acquire)( aRet.get() );
+ *ppMapping = aRet.get();
+ }
+}
+
+void SAL_CALL uno_getMappingByName(
+ uno_Mapping ** ppMapping, rtl_uString * pFrom, rtl_uString * pTo,
+ rtl_uString * pAddPurpose )
+ SAL_THROW_EXTERN_C()
+{
+ assert(ppMapping && pFrom && pTo && "### null ptr!");
+ if (*ppMapping)
+ {
+ (*(*ppMapping)->release)( *ppMapping );
+ *ppMapping = nullptr;
+ }
+
+ uno_Environment * pEFrom = nullptr;
+ uno_getEnvironment( &pEFrom, pFrom, nullptr );
+ OSL_ENSURE( pEFrom, "### cannot get source environment!" );
+ if (pEFrom)
+ {
+ uno_Environment * pETo = nullptr;
+ uno_getEnvironment( &pETo, pTo, nullptr );
+ OSL_ENSURE( pETo, "### cannot get target environment!" );
+ if (pETo)
+ {
+ ::uno_getMapping( ppMapping, pEFrom, pETo, pAddPurpose );
+ (*pETo->release)( pETo );
+ }
+ (*pEFrom->release)( pEFrom );
+ }
+}
+
+
+void SAL_CALL uno_registerMapping(
+ uno_Mapping ** ppMapping, uno_freeMappingFunc freeMapping,
+ uno_Environment * pFrom, uno_Environment * pTo, rtl_uString * pAddPurpose )
+ SAL_THROW_EXTERN_C()
+{
+ MappingsData & rData = getMappingsData();
+ ClearableMutexGuard aGuard( rData.aMappingsMutex );
+
+ const t_Mapping2Entry::const_iterator iFind( rData.aMapping2Entry.find( *ppMapping ) );
+ if (iFind == rData.aMapping2Entry.end())
+ {
+ OUString aMappingName(
+ getMappingName( pFrom, pTo, pAddPurpose ? OUString(pAddPurpose) : OUString() ) );
+ SAL_INFO("cppu", "> inserting new mapping: " << aMappingName);
+ // count initially 1
+ MappingEntry * pEntry = new MappingEntry( *ppMapping, freeMapping, aMappingName );
+ rData.aName2Entry[ aMappingName ] = pEntry;
+ rData.aMapping2Entry[ *ppMapping ] = pEntry;
+ }
+ else
+ {
+ MappingEntry * pEntry = (*iFind).second;
+ ++pEntry->nRef;
+
+ if (pEntry->pMapping != *ppMapping) // exchange mapping to be registered
+ {
+ (*pEntry->pMapping->acquire)( pEntry->pMapping );
+ --pEntry->nRef; // correct count; kill mapping to be registered
+ aGuard.clear();
+ (*freeMapping)( *ppMapping );
+ *ppMapping = pEntry->pMapping;
+ }
+ }
+}
+
+void SAL_CALL uno_revokeMapping(
+ uno_Mapping * pMapping )
+ SAL_THROW_EXTERN_C()
+{
+ MappingsData & rData = getMappingsData();
+ ClearableMutexGuard aGuard( rData.aMappingsMutex );
+
+ const t_Mapping2Entry::const_iterator iFind( rData.aMapping2Entry.find( pMapping ) );
+ OSL_ASSERT( iFind != rData.aMapping2Entry.end() );
+ MappingEntry * pEntry = (*iFind).second;
+ if (! --pEntry->nRef)
+ {
+ rData.aMapping2Entry.erase( pEntry->pMapping );
+ rData.aName2Entry.erase( pEntry->aMappingName );
+ aGuard.clear();
+ SAL_INFO("cppu", "> revoking mapping " << pEntry->aMappingName);
+ (*pEntry->freeMapping)( pEntry->pMapping );
+ delete pEntry;
+ }
+}
+
+
+void SAL_CALL uno_registerMappingCallback(
+ uno_getMappingFunc pCallback )
+ SAL_THROW_EXTERN_C()
+{
+ OSL_ENSURE( pCallback, "### null ptr!" );
+ MappingsData & rData = getMappingsData();
+ MutexGuard aGuard( rData.aCallbacksMutex );
+ rData.aCallbacks.insert( pCallback );
+}
+
+void SAL_CALL uno_revokeMappingCallback(
+ uno_getMappingFunc pCallback )
+ SAL_THROW_EXTERN_C()
+{
+ OSL_ENSURE( pCallback, "### null ptr!" );
+ MappingsData & rData = getMappingsData();
+ MutexGuard aGuard( rData.aCallbacksMutex );
+ rData.aCallbacks.erase( pCallback );
+}
+} // extern "C"
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */