Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 215 insertions, 0 deletions

diff --git a/cppu/source/helper/purpenv/helper_purpenv_Mapping.cxx b/cppu/source/helper/purpenv/helper_purpenv_Mapping.cxx
new file mode 100644
index 000000000..f68a47390
--- /dev/null
+++ b/cppu/source/helper/purpenv/helper_purpenv_Mapping.cxx
@@ -0,0 +1,215 @@
+/* -*- 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 <cppu/helper/purpenv/Mapping.hxx>
+
+#include "Proxy.hxx"
+
+#include <osl/interlck.h>
+#include <sal/log.hxx>
+#include <uno/environment.hxx>
+#include <uno/dispatcher.h>
+
+using namespace com::sun::star;
+
+namespace {
+
+class Mapping : public uno_Mapping
+{
+    uno::Environment   m_from;
+    uno::Environment   m_to;
+
+    oslInterlockedCount m_nCount;
+
+    cppu::helper::purpenv::ProbeFun * m_probeFun;
+    void                            * m_pContext;
+
+public:
+    explicit  Mapping(uno_Environment                 * pFrom,
+                      uno_Environment                 * pTo,
+                      cppu::helper::purpenv::ProbeFun * probeFun,
+                      void                            * pProbeContext);
+    virtual  ~Mapping();
+
+    void mapInterface(
+        uno_Interface                    ** ppOut,
+        uno_Interface                     * pUnoI,
+        typelib_InterfaceTypeDescription  * pTypeDescr);
+
+    void acquire();
+    void release();
+};
+
+}
+
+static void s_mapInterface(
+    uno_Mapping                       * puno_Mapping,
+    void                             ** ppOut,
+    void                              * pUnoI,
+    typelib_InterfaceTypeDescription  * pTypeDescr )
+    SAL_THROW_EXTERN_C()
+{
+    Mapping * pMapping = static_cast<Mapping *>(puno_Mapping);
+    pMapping->mapInterface(
+        reinterpret_cast<uno_Interface **>(ppOut),
+        static_cast<uno_Interface *>(pUnoI), pTypeDescr);
+}
+
+extern "C" {
+static void s_acquire(uno_Mapping * puno_Mapping)
+    SAL_THROW_EXTERN_C()
+{
+    Mapping * pMapping = static_cast<Mapping *>(puno_Mapping);
+    pMapping->acquire();
+}
+
+static void s_release(uno_Mapping * puno_Mapping)
+    SAL_THROW_EXTERN_C()
+{
+    Mapping * pMapping = static_cast<Mapping * >(puno_Mapping);
+    pMapping->release();
+}
+
+
+static void s_getIdentifier_v(va_list * pParam)
+{
+    uno_ExtEnvironment *  pEnv  = va_arg(*pParam, uno_ExtEnvironment *);
+    rtl_uString        ** ppOid = va_arg(*pParam, rtl_uString **);
+    uno_Interface      *  pUnoI = va_arg(*pParam, uno_Interface *);
+
+    pEnv->getObjectIdentifier(pEnv, ppOid, pUnoI);
+}
+
+static void s_free(uno_Mapping * puno_Mapping)
+    SAL_THROW_EXTERN_C()
+{
+    Mapping * pMapping = static_cast<Mapping *>(puno_Mapping);
+    delete pMapping;
+}
+}
+
+Mapping::Mapping(uno_Environment                 * pFrom,
+                 uno_Environment                 * pTo,
+                 cppu::helper::purpenv::ProbeFun * probeFun,
+                 void                            * pProbeContext
+)
+    : m_from    (pFrom),
+      m_to      (pTo),
+      m_nCount  (1),
+      m_probeFun(probeFun),
+      m_pContext(pProbeContext)
+{
+    SAL_INFO("cppu.purpenv", "LIFE: Mapping::Mapping(uno_Environment * pFrom, uno_Environment * pTo -> " << this);
+
+    uno_Mapping::acquire      = s_acquire;
+    uno_Mapping::release      = s_release;
+    uno_Mapping::mapInterface = s_mapInterface;
+}
+
+Mapping::~Mapping()
+{
+    SAL_INFO("cppu.purpenv", "LIFE: Mapping:~Mapping() -> " << this);
+}
+
+
+void Mapping::mapInterface(
+    uno_Interface                    ** ppOut,
+    uno_Interface                     * pUnoI,
+    typelib_InterfaceTypeDescription  * pTypeDescr)
+{
+    OSL_ASSERT(ppOut && pTypeDescr);
+    if (*ppOut)
+    {
+        (*ppOut)->release(*ppOut);
+        *ppOut = nullptr;
+    }
+
+    if (!pUnoI)
+        return;
+
+    // get object id of uno interface to be wrapped
+    // need to enter environment because of potential "queryInterface" call
+    rtl_uString * pOId = nullptr;
+    uno_Environment_invoke(m_from.get(), s_getIdentifier_v, m_from.get(), &pOId, pUnoI);
+    OSL_ASSERT(pOId);
+
+     // try to get any known interface from target environment
+    m_to.get()->pExtEnv->getRegisteredInterface(m_to.get()->pExtEnv, reinterpret_cast<void **>(ppOut), pOId, pTypeDescr);
+
+    if (!*ppOut) // not yet there, register new proxy interface
+    {
+        // try to publish a new proxy (ref count initially 1)
+        uno_Interface * pProxy = new Proxy(this,
+                                           m_from.get(),
+                                           m_to.get(),
+                                           pUnoI,
+                                           pTypeDescr,
+                                           pOId,
+                                           m_probeFun,
+                                           m_pContext);
+
+        // proxy may be exchanged during registration
+        m_to.get()->pExtEnv->registerProxyInterface(m_to.get()->pExtEnv,
+                                                    reinterpret_cast<void **>(&pProxy),
+                                                    Proxy_free,
+                                                    pOId,
+                                                    pTypeDescr);
+
+        *ppOut = pProxy;
+    }
+
+    rtl_uString_release(pOId);
+}
+
+
+void Mapping::acquire()
+{
+    if (osl_atomic_increment(&m_nCount) == 1)
+    {
+        uno_Mapping * pMapping = this;
+
+        ::uno_registerMapping(&pMapping, s_free, m_from.get(), m_to.get(), nullptr);
+    }
+}
+
+void Mapping::release()
+{
+    if (osl_atomic_decrement(&m_nCount) == 0)
+        ::uno_revokeMapping(this);
+}
+
+
+namespace cppu::helper::purpenv {
+
+void createMapping(uno_Mapping     ** ppMapping,
+                   uno_Environment  * pFrom,
+                   uno_Environment  * pTo,
+                   ProbeFun         * probeFun,
+                   void             * pContext
+ )
+{
+    *ppMapping = new Mapping(pFrom, pTo, probeFun, pContext);
+
+    ::uno_registerMapping(ppMapping, s_free, pFrom, pTo, nullptr);
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */