tdf#104830, need an own termination listener for lib objects

The destruction of the SwDLL object happens already through the normal
termination listener but the other termination listeners might still
depend on it. Also the outstanding events might need the SwDLL instance
to be still around.

This makes the destruction of the instance explicit and at a time when
it should be safe. We should use the same code for calc, impress, math
and base as well.

Change-Id: I50b8f30426f5a4a54e362e748fe962839abca73e
Reviewed-on: https://gerrit.libreoffice.org/32856
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>
(cherry picked from commit ad915fafd54f9115faea7147f82d80a942af2d68)
Reviewed-on: https://gerrit.libreoffice.org/32928
Reviewed-by: Michael Meeks <michael.meeks@collabora.com>
Reviewed-by: Michael Stahl <mstahl@redhat.com>

5 files changed, 66 insertions, 9 deletions

diff --git a/basctl/source/basicide/iderdll.cxx b/basctl/source/basicide/iderdll.cxx
index 19d5961eb93b..d155780e22ed 100644
--- a/basctl/source/basicide/iderdll.cxx
+++ b/basctl/source/basicide/iderdll.cxx
@@ -63,7 +63,7 @@ public:
 class DllInstance : public comphelper::unique_disposing_solar_mutex_reset_ptr<Dll>
 {
 public:
-    DllInstance() : comphelper::unique_disposing_solar_mutex_reset_ptr<Dll>(Reference<lang::XComponent>( frame::Desktop::create(comphelper::getProcessComponentContext()), UNO_QUERY_THROW), new Dll)
+    DllInstance() : comphelper::unique_disposing_solar_mutex_reset_ptr<Dll>(Reference<lang::XComponent>( frame::Desktop::create(comphelper::getProcessComponentContext()), UNO_QUERY_THROW), new Dll, true)
     { }
 };
 
diff --git a/framework/inc/services/desktop.hxx b/framework/inc/services/desktop.hxx
index e8fd0017d628..bd766e8fdc5f 100644
--- a/framework/inc/services/desktop.hxx
+++ b/framework/inc/services/desktop.hxx
@@ -454,6 +454,8 @@ class Desktop : private cppu::BaseMutex,
 
         css::uno::Reference< css::frame::XUntitledNumbers > m_xTitleNumberGenerator;
 
+        std::vector<css::uno::Reference<css::frame::XTerminateListener>> m_xComponentDllListeners;
+
 };      //  class Desktop
 
 }       //  namespace framework
diff --git a/framework/source/services/desktop.cxx b/framework/source/services/desktop.cxx
index 3e5f3a0242bc..18eecb3a3ead 100644
--- a/framework/source/services/desktop.cxx
+++ b/framework/source/services/desktop.cxx
@@ -335,6 +335,14 @@ sal_Bool SAL_CALL Desktop::terminate()
         if ( xPipeTerminator.is() )
             xPipeTerminator->notifyTermination( aEvent );
 
+        // we need a copy here as the notifyTermination call might cause a removeTerminateListener call
+        std::vector< css::uno::Reference<css::frame::XTerminateListener> > xComponentDllListeners = m_xComponentDllListeners;
+        for (auto& xListener : xComponentDllListeners)
+        {
+            xListener->notifyTermination(aEvent);
+        }
+        m_xComponentDllListeners.clear();
+
         // Must be really the last listener to be called.
         // Because it shutdown the whole process asynchronous !
         if ( xSfxTerminator.is() )
@@ -407,6 +415,11 @@ void SAL_CALL Desktop::addTerminateListener( const css::uno::Reference< css::fra
             m_xSWThreadManager = xListener;
             return;
         }
+        else if ( sImplementationName == "com.sun.star.comp.ComponentDLLListener" )
+        {
+            m_xComponentDllListeners.push_back(xListener);
+            return;
+        }
     }
 
     // No lock required ... container is threadsafe by itself.
@@ -448,6 +461,13 @@ void SAL_CALL Desktop::removeTerminateListener( const css::uno::Reference< css::
             m_xSWThreadManager.clear();
             return;
         }
+        else if (sImplementationName == "com.sun.star.comp.ComponentDLLListener")
+        {
+            m_xComponentDllListeners.erase(
+                    std::remove(m_xComponentDllListeners.begin(), m_xComponentDllListeners.end(), xListener),
+                    m_xComponentDllListeners.end());
+            return;
+        }
     }
 
     // No lock required ... container is threadsafe by itself.
@@ -1076,6 +1096,15 @@ void SAL_CALL Desktop::disposing()
     m_xPipeTerminator.clear();
     m_xQuickLauncher.clear();
     m_xSWThreadManager.clear();
+
+    // we need a copy because the notifyTermination might call the removeEventListener method
+    std::vector< css::uno::Reference<css::frame::XTerminateListener> > xComponentDllListeners = m_xComponentDllListeners;
+    for (auto& xListener: xComponentDllListeners)
+    {
+        xListener->notifyTermination(aEvent);
+    }
+    xComponentDllListeners.clear();
+    m_xComponentDllListeners.clear();
     m_xSfxTerminator.clear();
     m_xCommandOptions.reset();
 
diff --git a/include/comphelper/unique_disposing_ptr.hxx b/include/comphelper/unique_disposing_ptr.hxx
index 0f120b179392..64ff5402b5b6 100644
--- a/include/comphelper/unique_disposing_ptr.hxx
+++ b/include/comphelper/unique_disposing_ptr.hxx
@@ -14,6 +14,7 @@
 
 #include <com/sun/star/lang/XComponent.hpp>
 #include <com/sun/star/frame/XDesktop.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
 
 #include <vcl/svapp.hxx>
 #include <osl/mutex.hxx>
@@ -30,10 +31,10 @@ private:
     unique_disposing_ptr(const unique_disposing_ptr&) = delete;
     unique_disposing_ptr& operator=(const unique_disposing_ptr&) = delete;
 public:
-    unique_disposing_ptr( const css::uno::Reference< css::lang::XComponent > &rComponent, T * p = nullptr )
+    unique_disposing_ptr( const css::uno::Reference< css::lang::XComponent > &rComponent, T * p = nullptr, bool bComponent = false)
         : m_xItem(p)
     {
-        m_xTerminateListener = new TerminateListener(rComponent, *this);
+        m_xTerminateListener = new TerminateListener(rComponent, *this, bComponent);
     }
 
     virtual void reset(T * p = nullptr)
@@ -66,14 +67,19 @@ public:
         reset();
     }
 private:
-    class TerminateListener : public ::cppu::WeakImplHelper< css::frame::XTerminateListener >
+    class TerminateListener : public ::cppu::WeakImplHelper< css::frame::XTerminateListener,
+                                            css::lang::XServiceInfo>
     {
     private:
         css::uno::Reference< css::lang::XComponent > m_xComponent;
         unique_disposing_ptr<T>& m_rItem;
+        bool mbComponentDLL;
     public:
         TerminateListener(const css::uno::Reference< css::lang::XComponent > &rComponent,
-            unique_disposing_ptr<T>& rItem) : m_xComponent(rComponent), m_rItem(rItem)
+            unique_disposing_ptr<T>& rItem, bool bComponentDLL) :
+                    m_xComponent(rComponent),
+                    m_rItem(rItem),
+                    mbComponentDLL(bComponentDLL)
         {
             if (m_xComponent.is())
             {
@@ -97,7 +103,6 @@ private:
             }
         }
 
-    private:
         // XEventListener
         virtual void SAL_CALL disposing( const css::lang::EventObject& rEvt )
             throw (css::uno::RuntimeException, std::exception) override
@@ -130,6 +135,27 @@ private:
         {
             disposing(rEvt);
         }
+
+        virtual OUString SAL_CALL getImplementationName()
+            throw (css::uno::RuntimeException, std::exception) override
+        {
+            if (mbComponentDLL)
+                return OUString("com.sun.star.comp.ComponentDLLListener");
+            else
+                return OUString("com.sun.star.comp.DisposingTerminateListener");
+        }
+
+        virtual sal_Bool SAL_CALL supportsService(const OUString& /*rName*/)
+            throw (css::uno::RuntimeException, std::exception) override
+        {
+            return false;
+        }
+
+        virtual css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames()
+            throw (css::uno::RuntimeException, std::exception) override
+        {
+            return css::uno::Sequence<OUString>();
+        }
    };
 };
 
@@ -141,8 +167,8 @@ template<class T> class unique_disposing_solar_mutex_reset_ptr
     : public unique_disposing_ptr<T>
 {
 public:
-    unique_disposing_solar_mutex_reset_ptr( const css::uno::Reference< css::lang::XComponent > &rComponent, T * p = nullptr )
-        : unique_disposing_ptr<T>(rComponent, p)
+    unique_disposing_solar_mutex_reset_ptr( const css::uno::Reference< css::lang::XComponent > &rComponent, T * p = nullptr, bool bComponent = false)
+        : unique_disposing_ptr<T>(rComponent, p, bComponent)
     {
     }
 
diff --git a/sw/source/uibase/app/swdll.cxx b/sw/source/uibase/app/swdll.cxx
index 803c2b8cc376..ed4d3fa0a782 100644
--- a/sw/source/uibase/app/swdll.cxx
+++ b/sw/source/uibase/app/swdll.cxx
@@ -58,7 +58,7 @@ namespace
     class SwDLLInstance : public comphelper::unique_disposing_solar_mutex_reset_ptr<SwDLL>
     {
     public:
-        SwDLLInstance() : comphelper::unique_disposing_solar_mutex_reset_ptr<SwDLL>(uno::Reference<lang::XComponent>( frame::Desktop::create(comphelper::getProcessComponentContext()), uno::UNO_QUERY_THROW), new SwDLL)
+        SwDLLInstance() : comphelper::unique_disposing_solar_mutex_reset_ptr<SwDLL>(uno::Reference<lang::XComponent>( frame::Desktop::create(comphelper::getProcessComponentContext()), uno::UNO_QUERY_THROW), new SwDLL, true)
         {
         }
     };