+/**
+ * Closure for 'merge_pr'.
+ */
+struct MergeContext
+{
+
+ struct GSF_PendingRequest *pr;
+
+ int merged;
+
+};
+
+
+/**
+ * Iterator that checks if an equivalent request is already
+ * present for this peer.
+ *
+ * @param cls closure
+ * @param node internal node of the heap (ignored)
+ * @param element request plan stored at the node
+ * @param cost cost associated with the node (ignored)
+ * @return GNUNET_YES if we should continue to iterate,
+ * GNUNET_NO if not (merge success)
+ */
+static int
+merge_pr (void *cls, struct GNUNET_CONTAINER_HeapNode *node, void *element,
+ GNUNET_CONTAINER_HeapCostType cost)
+{
+ struct MergeContext *mpr = cls;
+ struct GSF_RequestPlan *rp = element;
+ struct GSF_PendingRequestData *prd;
+ struct GSF_RequestPlanReference *rpr;
+ struct PendingRequestList *prl;
+ struct GSF_PendingRequest *latest;
+
+ if (GNUNET_OK !=
+ GSF_pending_request_is_compatible_ (mpr->pr, rp->prl_head->pr))
+ return GNUNET_YES;
+ /* merge new request with existing request plan */
+ rpr = GNUNET_malloc (sizeof (struct GSF_RequestPlanReference));
+ prl = GNUNET_malloc (sizeof (struct PendingRequestList));
+ rpr->rp = rp;
+ rpr->prl = prl;
+ prl->rpr = rpr;
+ prl->pr = mpr->pr;
+ prd = GSF_pending_request_get_data_ (mpr->pr);
+ GNUNET_CONTAINER_DLL_insert (prd->rpr_head, prd->rpr_tail, rpr);
+ GNUNET_CONTAINER_DLL_insert (rp->prl_head, rp->prl_tail, prl);
+ mpr->merged = GNUNET_YES;
+ GNUNET_STATISTICS_update (GSF_stats, gettext_noop ("# requests merged"), 1,
+ GNUNET_NO);
+ latest = get_latest (rp);
+ if (GSF_pending_request_get_data_ (latest)->ttl.abs_value <
+ prd->ttl.abs_value)
+ {
+ GNUNET_STATISTICS_update (GSF_stats, gettext_noop ("# requests refreshed"),
+ 1, GNUNET_NO);
+ rp->transmission_counter = 0; /* reset */
+ }
+ return GNUNET_NO;
+}
+
+