tdf#89329: use shared_ptr for pImpl in defaultoptions...

instead of unique_ptr as in commit
7bc1c79c

Change-Id: I4e57378a333455b818162c6cc8484be9dcaddb03
Reviewed-on: https://gerrit.libreoffice.org/26236Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>

include/unotools/defaultoptions.hxx

@@ -30,7 +30,7 @@ class SvtDefaultOptions_Impl;
 class SAL_WARN_UNUSED UNOTOOLS_DLLPUBLIC SvtDefaultOptions : public utl::detail::Options
 {
 private:
-    std::unique_ptr<SvtDefaultOptions_Impl> pImpl;
+    std::shared_ptr<SvtDefaultOptions_Impl> pImpl;
 
 public:
 

unotools/source/config/defaultoptions.cxx

@@ -93,6 +93,7 @@ public:
     OUString         m_aUserDictionaryPath;
 
                     SvtDefaultOptions_Impl();
+                    ~SvtDefaultOptions_Impl();
 
     OUString         GetDefaultPath( sal_uInt16 nId ) const;
     virtual void    Notify( const css::uno::Sequence<OUString>& aPropertyNames) override;
@@ -103,8 +104,7 @@ private:
 
 // global ----------------------------------------------------------------
 
-static SvtDefaultOptions_Impl*  pOptions = nullptr;
-static sal_Int32                nRefCount = 0;
+std::weak_ptr<SvtDefaultOptions_Impl>  pOptions;
 
 typedef OUString SvtDefaultOptions_Impl:: *PathStrPtr;
 
@@ -313,6 +313,12 @@ SvtDefaultOptions_Impl::SvtDefaultOptions_Impl() : ConfigItem( "Office.Common/Pa
     }
 }
 
+SvtDefaultOptions_Impl::~SvtDefaultOptions_Impl()
+{
+    if ( IsModified() )
+        Commit();
+}
+
 // class SvtDefaultOptions -----------------------------------------------
 namespace { struct lclMutex : public rtl::Static< ::osl::Mutex, lclMutex > {}; }
 
@@ -320,25 +326,20 @@ SvtDefaultOptions::SvtDefaultOptions()
 {
     // Global access, must be guarded (multithreading)
     ::osl::MutexGuard aGuard( lclMutex::get() );
-    if ( !pOptions )
+    pImpl = pOptions.lock();
+    if ( !pImpl )
     {
-        pOptions = new SvtDefaultOptions_Impl;
+        pImpl = std::make_shared<SvtDefaultOptions_Impl>();
+        pOptions = pImpl;
         ItemHolder1::holdConfigItem(E_DEFAULTOPTIONS);
     }
-    ++nRefCount;
-    pImpl.reset(pOptions);
 }
 
 SvtDefaultOptions::~SvtDefaultOptions()
 {
     // Global access, must be guarded (multithreading)
     ::osl::MutexGuard aGuard( lclMutex::get() );
-    if ( !--nRefCount )
-    {
-        if ( pOptions->IsModified() )
-            pOptions->Commit();
-        DELETEZ( pOptions );
-    }
+    pImpl.reset();
 }
 
 OUString SvtDefaultOptions::GetDefaultPath( sal_uInt16 nId ) const