Index: add call to get rid of filter subprocesses at end of indexing (for the GUI thread)

src/internfile/mimehandler.cpp

@@ -141,6 +141,17 @@ void returnMimeHandler(Dijon::Filter *handler)
     }
 }
 
+void clearMimeHandlerCache()
+{
+    typedef multimap<string, Dijon::Filter*>::value_type value_type;
+    map<string, Dijon::Filter *>::iterator it;
+    for (it = o_handlers.begin(); it != o_handlers.end(); it++) {
+	delete it->second;
+    }
+    o_handlers.clear();
+}
+
+
 /* Get handler/filter object for given mime type: */
 Dijon::Filter *getMimeHandler(const string &mtype, RclConfig *cfg, 
 			      bool filtertypes)

src/internfile/mimehandler.h

@@ -114,6 +114,11 @@ extern Dijon::Filter *getMimeHandler(const std::string &mtyp, RclConfig *cfg,
 /// Free up filter for reuse (you can also delete it)
 extern void returnMimeHandler(Dijon::Filter *);
 
+/// Clean up cache at the end of an indexing pass. For people who use
+/// the GUI to index: avoid all those filter processes forever hanging
+/// off recoll.
+extern void clearMimeHandlerCache();
+
 /// Can this mime type be interned ?
 extern bool canIntern(const std::string mimetype, RclConfig *cfg);