3 files changed, 106 insertions, 2 deletions

diff --git a/configmgr/source/components.cxx b/configmgr/source/components.cxx
index f76f020089..2e07320725 100644
--- a/configmgr/source/components.cxx
+++ b/configmgr/source/components.cxx
@@ -30,6 +30,7 @@
 #include "sal/config.h"
 
 #include <algorithm>
+#include <cstddef>
 #include <list>
 
 #include "com/sun/star/beans/Optional.hpp"
@@ -44,8 +45,11 @@
 #include "com/sun/star/uno/RuntimeException.hpp"
 #include "com/sun/star/uno/XComponentContext.hpp"
 #include "com/sun/star/uno/XInterface.hpp"
+#include "osl/conditn.hxx"
 #include "osl/diagnose.h"
 #include "osl/file.hxx"
+#include "osl/mutex.hxx"
+#include "osl/thread.hxx"
 #include "rtl/bootstrap.hxx"
 #include "rtl/logfile.h"
 #include "rtl/ref.hxx"
@@ -54,10 +58,12 @@
 #include "rtl/ustring.h"
 #include "rtl/ustring.hxx"
 #include "sal/types.h"
+#include "salhelper/simplereferenceobject.hxx"
 
 #include "additions.hxx"
 #include "components.hxx"
 #include "data.hxx"
+#include "lock.hxx"
 #include "modifications.hxx"
 #include "node.hxx"
 #include "nodemap.hxx"
@@ -149,6 +155,66 @@ static Components * singleton = 0;
 
 }
 
+class Components::WriteThread:
+    public osl::Thread, public salhelper::SimpleReferenceObject
+{
+public:
+    static void * operator new(std::size_t size)
+    { return Thread::operator new(size); }
+
+    static void operator delete(void * pointer)
+    { Thread::operator delete(pointer); }
+
+    WriteThread(
+        rtl::Reference< WriteThread > * reference, Components & components,
+        rtl::OUString const & url, Data const & data);
+
+    void flush() { delay_.set(); }
+
+private:
+    virtual ~WriteThread() {}
+
+    virtual void SAL_CALL run();
+
+    virtual void SAL_CALL onTerminated() { release(); }
+
+    rtl::Reference< WriteThread > * reference_;
+    Components & components_;
+    rtl::OUString url_;
+    Data const & data_;
+    osl::Condition delay_;
+};
+
+Components::WriteThread::WriteThread(
+    rtl::Reference< WriteThread > * reference, Components & components,
+    rtl::OUString const & url, Data const & data):
+    reference_(reference), components_(components), url_(url), data_(data)
+{
+    OSL_ASSERT(reference != 0);
+    acquire();
+}
+
+void Components::WriteThread::run() {
+    TimeValue t = { 1, 0 }; // 1 sec
+    delay_.wait(&t); // must not throw; result_error is harmless and ignored
+    osl::MutexGuard g(lock); // must not throw
+    try {
+        try {
+            writeModFile(components_, url_, data_);
+        } catch (css::uno::RuntimeException & e) {
+            // Silently ignore write errors, instead of aborting:
+            OSL_TRACE(
+                "configmgr error writing modifications: %s",
+                rtl::OUStringToOString(
+                    e.Message, RTL_TEXTENCODING_UTF8).getStr());
+        }
+    } catch (...) {
+        reference_->clear();
+        throw;
+    }
+    reference_->clear();
+}
+
 void Components::initSingleton(
     css::uno::Reference< css::uno::XComponentContext > const & context)
 {
@@ -239,7 +305,23 @@ void Components::addModification(Path const & path) {
 }
 
 void Components::writeModifications() {
-    writeModFile(*this, getModificationFileUrl(), data_);
+    if (!writeThread_.is()) {
+        writeThread_ = new WriteThread(
+            &writeThread_, *this, getModificationFileUrl(), data_);
+        writeThread_->create();
+    }
+}
+
+void Components::flushModifications() {
+    rtl::Reference< WriteThread > thread;
+    {
+        osl::MutexGuard g(lock);
+        thread = writeThread_;
+    }
+    if (thread.is()) {
+        thread->flush();
+        thread->join();
+    }
 }
 
 void Components::insertExtensionXcsFile(
diff --git a/configmgr/source/components.hxx b/configmgr/source/components.hxx
index 4fc47f7918..1c735efca6 100644
--- a/configmgr/source/components.hxx
+++ b/configmgr/source/components.hxx
@@ -94,6 +94,11 @@ public:
 
     void writeModifications();
 
+    void flushModifications();
+        // must be called with configmgr::lock unaquired; must be called before
+        // shutdown if writeModifications has ever been called (probably
+        // indirectly, via removeExtensionXcuFile)
+
     void insertExtensionXcsFile(bool shared, rtl::OUString const & fileUri);
 
     void insertExtensionXcuFile(
@@ -160,11 +165,14 @@ private:
                 com::sun::star::beans::XPropertySet > >
         ExternalServices;
 
+    class WriteThread;
+
     com::sun::star::uno::Reference< com::sun::star::uno::XComponentContext >
         context_;
     Data data_;
     WeakRootSet roots_;
     ExternalServices externalServices_;
+    rtl::Reference< WriteThread > writeThread_;
 };
 
 }
diff --git a/configmgr/source/configurationprovider.cxx b/configmgr/source/configurationprovider.cxx
index 273a803716..ed50642994 100644
--- a/configmgr/source/configurationprovider.cxx
+++ b/configmgr/source/configurationprovider.cxx
@@ -115,6 +115,8 @@ public:
 private:
     virtual ~Service() {}
 
+    virtual void SAL_CALL disposing() { flushModifications(); }
+
     virtual rtl::OUString SAL_CALL getImplementationName()
         throw (css::uno::RuntimeException)
     { return configuration_provider::getImplementationName(); }
@@ -167,6 +169,8 @@ private:
     virtual css::lang::Locale SAL_CALL getLocale()
         throw (css::uno::RuntimeException);
 
+    void flushModifications() const;
+
     css::uno::Reference< css::uno::XComponentContext > context_;
     rtl::OUString locale_;
 };
@@ -327,7 +331,7 @@ void Service::removeRefreshListener(
 }
 
 void Service::flush() throw (css::uno::RuntimeException) {
-    //TODO
+    flushModifications();
     cppu::OInterfaceContainerHelper * cont = rBHelper.getContainer(
         cppu::UnoType< css::util::XFlushListener >::get());
     if (cont != 0) {
@@ -381,6 +385,16 @@ css::lang::Locale Service::getLocale() throw (css::uno::RuntimeException) {
     return loc;
 }
 
+void Service::flushModifications() const {
+    Components * components;
+    {
+        osl::MutexGuard guard(lock);
+        Components::initSingleton(context_);
+        components = &Components::getSingleton();
+    }
+    components->flushModifications();
+}
+
 class Factory:
     public cppu::WeakImplHelper1< css::lang::XSingleComponentFactory >,
     private boost::noncopyable