-ensure stats queues do not grow too big

[oweals/gnunet.git] / src / datacache / datacache.c

diff --git a/src/datacache/datacache.c b/src/datacache/datacache.c
index 426841bc886544985aa598e54f346037f42cdb06..a1869a8bd4bc851ca20fc1e8c8fb9fd2afbe6b15 100644 (file)
--- a/src/datacache/datacache.c
+++ b/src/datacache/datacache.c
@@ -1,6 +1,6 @@
 /*
      This file is part of GNUnet
-     Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2015 Christian Grothoff (and other contributing authors)
+     Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2015 GNUnet e.V.
 
      GNUnet is free software; you can redistribute it and/or modify
      it under the terms of the GNU General Public License as published
@@ -14,8 +14,8 @@
 
      You should have received a copy of the GNU General Public License
      along with GNUnet; see the file COPYING.  If not, write to the
-     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-     Boston, MA 02111-1307, USA.
+     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+     Boston, MA 02110-1301, USA.
 */
 /**
  * @file datacache/datacache.c
@@ -375,4 +375,39 @@ GNUNET_DATACACHE_get_random (struct GNUNET_DATACACHE_Handle *h,
 }
 
 
+/**
+ * Iterate over the results that are "close" to a particular key in
+ * the datacache.  "close" is defined as numerically larger than @a
+ * key (when interpreted as a circular address space), with small
+ * distance.
+ *
+ * @param h handle to the datacache
+ * @param key area of the keyspace to look into
+ * @param num_results number of results that should be returned to @a iter
+ * @param iter maybe NULL (to just count)
+ * @param iter_cls closure for @a iter
+ * @return the number of results found
+ */
+unsigned int
+GNUNET_DATACACHE_get_closest (struct GNUNET_DATACACHE_Handle *h,
+                              const struct GNUNET_HashCode *key,
+                              unsigned int num_results,
+                              GNUNET_DATACACHE_Iterator iter,
+                              void *iter_cls)
+{
+  GNUNET_STATISTICS_update (h->stats,
+                            gettext_noop ("# proximity search requests received"),
+                            1,
+                            GNUNET_NO);
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "Processing proximity search at `%s'\n",
+       GNUNET_h2s (key));
+  return h->api->get_closest (h->api->cls,
+                              key,
+                              num_results,
+                              iter,
+                              iter_cls);
+}
+
+
 /* end of datacache.c */