1 files changed, 58 insertions, 0 deletions
diff --git a/sc/source/core/tool/sharedstringpoolpurge.cxx b/sc/source/core/tool/sharedstringpoolpurge.cxx
new file mode 100644
index 000000000..7b8749006
--- /dev/null
+++ b/sc/source/core/tool/sharedstringpoolpurge.cxx
@@ -0,0 +1,58 @@
+/* -*- 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/.
+ *
+ */
+
+#include <sharedstringpoolpurge.hxx>
+
+#include <algorithm>
+
+#include <vcl/svapp.hxx>
+
+namespace sc
+{
+SharedStringPoolPurge::SharedStringPoolPurge()
+    : mTimer("SharedStringPoolPurge")
+{
+    mTimer.SetPriority(TaskPriority::LOWEST);
+    mTimer.SetTimeout(10000); // 10 sec
+    mTimer.SetInvokeHandler(LINK(this, SharedStringPoolPurge, timerHandler));
+}
+
+SharedStringPoolPurge::~SharedStringPoolPurge() { cleanup(); }
+
+void SharedStringPoolPurge::delayedPurge(const std::shared_ptr<svl::SharedStringPool>& pool)
+{
+    if (std::find(mPoolsToPurge.begin(), mPoolsToPurge.end(), pool) == mPoolsToPurge.end())
+    {
+        mPoolsToPurge.push_back(pool);
+        SolarMutexGuard guard;
+        mTimer.Start();
+    }
+}
+
+void SharedStringPoolPurge::cleanup()
+{
+    for (std::shared_ptr<svl::SharedStringPool>& pool : mPoolsToPurge)
+    {
+        if (pool.use_count() > 1)
+            pool->purge();
+    }
+    mPoolsToPurge.clear();
+}
+
+IMPL_LINK_NOARG(SharedStringPoolPurge, timerHandler, Timer*, void)
+{
+    SolarMutexGuard guard;
+    mTimer.Stop();
+    cleanup();
+}
+
+} // namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */