+/**
+ * Return a 32-bit key from a pointer
+ *
+ * @param rcop the pointer
+ * @return 32-bit key
+ */
+static uint32_t
+rcop_key (void *rcop)
+{
+ return * ((uint32_t *) &rcop);
+}
+
+
+/**
+ * Context information used for finding a pointer in the rcop_map
+ */
+struct SearchContext
+{
+ /**
+ * The operation pointer to look for
+ */
+ struct GNUNET_TESTBED_Operation *query;
+
+ /**
+ * The Run context operation which has the operation being queried
+ */
+ struct RunContextOperation *result;
+};
+
+
+/**
+ * Iterator for searching over the elements matching a given query
+ *
+ * @param cls the SearchContext
+ * @param key the 32-bit key
+ * @param value the RunContextOperation element
+ * @return GNUNET_YES to continue iteration; GNUNET_NO to cancel it
+ */
+static int
+search_iterator (void *cls, uint32_t key, void *value)
+{
+ struct RunContextOperation *rcop = value;
+ struct SearchContext *sc = cls;
+
+ GNUNET_assert (NULL != rcop);
+ if (sc->query == rcop->op)
+ {
+ GNUNET_assert (NULL == sc->result);
+ sc->result = rcop;
+ return GNUNET_NO;
+ }
+ return GNUNET_YES;
+}
+
+
+/**
+ * Initiate a search for the given operation in the rcop_map
+ *
+ * @param rc the RunContext whose rcop_map will be searched for the given
+ * operation
+ * @param op the given operation to search for
+ * @return the matching RunContextOperation if found; NULL if not
+ */
+static struct RunContextOperation *
+search_rcop (struct GNUNET_TESTBED_RunHandle *rc, struct GNUNET_TESTBED_Operation *op)
+{
+ struct SearchContext sc;
+
+ sc.query = op;
+ sc.result = NULL;
+ if (GNUNET_SYSERR ==
+ GNUNET_CONTAINER_multihashmap32_get_multiple (rc->rcop_map,
+ rcop_key (op),
+ &search_iterator,
+ &sc))
+ {
+ GNUNET_assert (NULL != sc.result);
+ return sc.result;
+ }
+ return NULL;
+}
+
+
+/**
+ * Insert an RunContextOperation into the rcop_map of the given RunContext
+ *
+ * @param rc the RunContext into whose map is to be used for insertion
+ * @param rcop the RunContextOperation to insert
+ */
+static void
+insert_rcop (struct GNUNET_TESTBED_RunHandle *rc, struct RunContextOperation *rcop)
+{
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_CONTAINER_multihashmap32_put (rc->rcop_map,
+ rcop_key (rcop->op), rcop,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
+}
+
+
+/**
+ * Remove a RunContextOperation from the rcop_map of the given RunContext
+ *
+ * @param rc the RunContext from whose map the given RunContextOperaton has to
+ * be removed
+ * @param rcop the RunContextOperation
+ */
+static void
+remove_rcop (struct GNUNET_TESTBED_RunHandle *rc, struct RunContextOperation *rcop)
+{
+ GNUNET_assert (GNUNET_YES ==
+ GNUNET_CONTAINER_multihashmap32_remove (rc->rcop_map,
+ rcop_key (rcop->op),
+ rcop));
+}
+