diff --git a/indra/llcommon/llevents.cpp b/indra/llcommon/llevents.cpp
index dce97b5411..5d4dbd9126 100644
--- a/indra/llcommon/llevents.cpp
+++ b/indra/llcommon/llevents.cpp
@@ -45,6 +45,7 @@
 #include <cctype>
 // external library headers
 #include <boost/range/iterator_range.hpp>
+#include <boost/make_shared.hpp>
 #if LL_WINDOWS
 #pragma warning (push)
 #pragma warning (disable : 4701) // compiler thinks might use uninitialized var, but no
@@ -154,13 +155,23 @@ void LLEventPumps::flush()
     }
 }
 
+void LLEventPumps::clear()
+{
+    // Clear every known LLEventPump instance. Leave it up to each instance to
+    // decide what to do with the clear() call.
+    for (PumpMap::value_type& pair : mPumpMap)
+    {
+        pair.second->clear();
+    }
+}
+
 void LLEventPumps::reset()
 {
     // Reset every known LLEventPump instance. Leave it up to each instance to
     // decide what to do with the reset() call.
-    for (PumpMap::iterator pmi = mPumpMap.begin(), pmend = mPumpMap.end(); pmi != pmend; ++pmi)
+    for (PumpMap::value_type& pair : mPumpMap)
     {
-        pmi->second->reset();
+        pair.second->reset();
     }
 }
 
@@ -283,7 +294,7 @@ LLEventPump::LLEventPump(const std::string& name, bool tweak):
     // Register every new instance with LLEventPumps
     mRegistry(LLEventPumps::instance().getHandle()),
     mName(mRegistry.get()->registerNew(*this, name, tweak)),
-    mSignal(new LLStandardSignal()),
+    mSignal(boost::make_shared<LLStandardSignal>()),
     mEnabled(true)
 {}
 
@@ -311,6 +322,14 @@ std::string LLEventPump::inventName(const std::string& pfx)
     return STRINGIZE(pfx << suffix++);
 }
 
+void LLEventPump::clear()
+{
+    // Destroy the original LLStandardSignal instance, replacing it with a
+    // whole new one.
+    mSignal = boost::make_shared<LLStandardSignal>();
+    mConnections.clear();
+}
+
 void LLEventPump::reset()
 {
     mSignal.reset();
@@ -546,16 +565,16 @@ bool LLEventStream::post(const LLSD& event)
 bool LLEventMailDrop::post(const LLSD& event)
 {
     bool posted = false;
-    
+
     if (!mSignal->empty())
         posted = LLEventStream::post(event);
-    
+
     if (!posted)
     {   // if the event was not handled we will save it for later so that it can 
         // be posted to any future listeners when they attach.
         mEventHistory.push_back(event);
     }
-    
+
     return posted;
 }
 
diff --git a/indra/llcommon/llevents.h b/indra/llcommon/llevents.h
index 1d51c660ed..78174cea82 100644
--- a/indra/llcommon/llevents.h
+++ b/indra/llcommon/llevents.h
@@ -263,6 +263,11 @@ public:
      */
     void flush();
 
+    /**
+     * Disconnect listeners from all known LLEventPump instances
+     */
+    void clear();
+
     /**
      * Reset all known LLEventPump instances
      * workaround for DEV-35406 crash on shutdown
@@ -586,7 +591,7 @@ private:
     friend class LLEventPumps;
     /// flush queued events
     virtual void flush() {}
-
+    virtual void clear();
     virtual void reset();