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-rw-r--r--indra/newview/llappviewer.cpp48
1 files changed, 48 insertions, 0 deletions
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index d12b971bde..16c2b2d55a 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -321,6 +321,47 @@ static std::string gLaunchFileOnQuit;
// Used on Win32 for other apps to identify our window (eg, win_setup)
const char* const VIEWER_WINDOW_CLASSNAME = "Second Life";
+//-- LLDeferredTaskList ------------------------------------------------------
+
+/**
+ * A list of deferred tasks.
+ *
+ * We sometimes need to defer execution of some code until the viewer gets idle,
+ * e.g. removing an inventory item from within notifyObservers() may not work out.
+ *
+ * Tasks added to this list will be executed in the next LLAppViewer::idle() iteration.
+ * All tasks are executed only once.
+ */
+class LLDeferredTaskList:
+ public LLSingleton<LLDeferredTaskList>,
+ private LLDestroyClass<LLDeferredTaskList>
+{
+ LOG_CLASS(LLDeferredTaskList);
+ friend class LLAppViewer;
+ friend class LLDestroyClass<LLDeferredTaskList>;
+ typedef boost::signals2::signal<void()> signal_t;
+
+ void addTask(const signal_t::slot_type& cb)
+ {
+ mSignal.connect(cb);
+ }
+
+ void run()
+ {
+ if (mSignal.empty()) return;
+
+ mSignal();
+ mSignal.disconnect_all_slots();
+ }
+
+ static void destroyClass()
+ {
+ instance().mSignal.disconnect_all_slots();
+ }
+
+ signal_t mSignal;
+};
+
//----------------------------------------------------------------------------
// List of entries from strings.xml to always replace
@@ -3820,6 +3861,11 @@ bool LLAppViewer::initCache()
}
}
+void LLAppViewer::addOnIdleCallback(const boost::function<void()>& cb)
+{
+ LLDeferredTaskList::instance().addTask(cb);
+}
+
void LLAppViewer::purgeCache()
{
LL_INFOS("AppCache") << "Purging Cache and Texture Cache..." << LL_ENDL;
@@ -4413,6 +4459,8 @@ void LLAppViewer::idle()
gAudiop->idle(max_audio_decode_time);
}
}
+
+ LLDeferredTaskList::instance().run();
// Handle shutdown process, for example,
// wait for floaters to close, send quit message,