+#endif
+
+extern void privoxy_mutex_lock(privoxy_mutex_t *mutex);
+extern void privoxy_mutex_unlock(privoxy_mutex_t *mutex);
+
+extern privoxy_mutex_t log_mutex;
+extern privoxy_mutex_t log_init_mutex;
+extern privoxy_mutex_t connection_reuse_mutex;
+
+#ifdef FEATURE_EXTERNAL_FILTERS
+extern privoxy_mutex_t external_filter_mutex;
+#endif