[GNUnet-SVN] r25892 - gnunet/src/testbed

[gnunet]

Author: harsha
Date: 2013-01-25 11:55:49 +0100 (Fri, 25 Jan 2013)
New Revision: 25892

Added:
   gnunet/src/testbed/gnunet-service-testbed_hc.c
Modified:
   gnunet/src/testbed/Makefile.am
   gnunet/src/testbed/gnunet-service-testbed.c
   gnunet/src/testbed/gnunet-service-testbed.h
Log:
separate hello cache as module

Modified: gnunet/src/testbed/Makefile.am
===================================================================
--- gnunet/src/testbed/Makefile.am      2013-01-25 10:31:11 UTC (rev 25891)
+++ gnunet/src/testbed/Makefile.am      2013-01-25 10:55:49 UTC (rev 25892)
@@ -38,7 +38,8 @@
 
 gnunet_service_testbed_SOURCES = \
   gnunet-service-testbed.c \
-  gnunet-service-testbed.h
+  gnunet-service-testbed.h \
+  gnunet-service-testbed_hc.c
 gnunet_service_testbed_LDADD = $(XLIB) \
  $(top_builddir)/src/util/libgnunetutil.la \
  $(top_builddir)/src/core/libgnunetcore.la \

Modified: gnunet/src/testbed/gnunet-service-testbed.c
===================================================================
--- gnunet/src/testbed/gnunet-service-testbed.c 2013-01-25 10:31:11 UTC (rev 
25891)
+++ gnunet/src/testbed/gnunet-service-testbed.c 2013-01-25 10:55:49 UTC (rev 
25892)
@@ -24,7 +24,6 @@
  * @author Sree Harsha Totakura
  */
 
-#include "platform.h"
 #include "gnunet-service-testbed.h"
 
 #include <zlib.h>
@@ -138,18 +137,6 @@
 static struct ForwardedOperationContext *fopcq_tail;
 
 /**
- * DLL head for least recently used hello cache entries; least recently used
- * cache items are at the head
- */
-static struct HelloCacheEntry *lru_hcache_head;
-
-/**
- * DLL tail for least recently used hello cache entries; recently used cache
- * items are at the tail
- */
-static struct HelloCacheEntry *lru_hcache_tail;
-
-/**
  * Array of hosts
  */
 static struct GNUNET_TESTBED_Host **host_list;
@@ -175,11 +162,6 @@
 static struct GNUNET_CONTAINER_MultiHashMap *ss_map;
 
 /**
- * Hashmap to maintain HELLO cache
- */
-static struct GNUNET_CONTAINER_MultiHashMap *hello_cache;
-
-/**
  * The event mask for the events we listen from sub-controllers
  */
 static uint64_t event_mask;
@@ -204,11 +186,6 @@
  */
 static unsigned int peer_list_size;
 
-/**
- * The size of hello cache
- */
-static unsigned int hello_cache_size;
-
 /*********/
 /* Tasks */
 /*********/
@@ -225,87 +202,6 @@
 
 
 /**
- * Looks up in the hello cache and returns the HELLO of the given peer
- *
- * @param id the peer identity of the peer whose HELLO has to be looked up
- * @return the HELLO message; NULL if not found
- */
-static const struct GNUNET_MessageHeader *
-hello_cache_lookup (const struct GNUNET_PeerIdentity *id)
-{
-  struct HelloCacheEntry *entry;
-
-  if (NULL == hello_cache)
-    return NULL;
-  entry = GNUNET_CONTAINER_multihashmap_get (hello_cache, &id->hashPubKey);
-  if (NULL == entry)
-    return NULL;
-  GNUNET_CONTAINER_DLL_remove (lru_hcache_head, lru_hcache_tail, entry);
-  GNUNET_CONTAINER_DLL_insert_tail (lru_hcache_head, lru_hcache_tail, entry);
-  return entry->hello;
-}
-
-
-/**
- * Removes the given hello cache centry from hello cache and frees its 
resources
- *
- * @param entry the entry to remove
- */
-static void
-hello_cache_remove (struct HelloCacheEntry *entry)
-{
-  GNUNET_CONTAINER_DLL_remove (lru_hcache_head, lru_hcache_tail, entry);
-  GNUNET_assert (GNUNET_YES == 
-                 GNUNET_CONTAINER_multihashmap_remove (hello_cache,
-                                                       &entry->key,
-                                                       entry));
-  GNUNET_free (entry->hello);
-  GNUNET_free (entry);
-}
-
-
-/**
- * Caches the HELLO of the given peer. Updates the HELLO if it was already
- * cached before
- *
- * @param id the peer identity of the peer whose HELLO has to be cached
- * @param hello the HELLO message
- */
-static void
-hello_cache_add (const struct GNUNET_PeerIdentity *id,
-                 const struct GNUNET_MessageHeader *hello)
-{
-  struct HelloCacheEntry *entry;
-  
-  if (NULL == hello_cache)
-    return;
-  entry = GNUNET_CONTAINER_multihashmap_get (hello_cache, &id->hashPubKey);
-  if (NULL == entry)
-  {
-    entry = GNUNET_malloc (sizeof (struct HelloCacheEntry));
-    memcpy (&entry->key, &id->hashPubKey, sizeof (struct GNUNET_HashCode));
-    if (GNUNET_CONTAINER_multihashmap_size (hello_cache) == hello_cache_size)
-    {
-      GNUNET_assert (NULL != lru_hcache_head);
-      hello_cache_remove (lru_hcache_head);
-    }
-    GNUNET_assert (GNUNET_OK == GNUNET_CONTAINER_multihashmap_put 
-                   (hello_cache,
-                    &entry->key,
-                    entry,
-                    GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST));
-  }
-  else
-  {
-    GNUNET_CONTAINER_DLL_remove (lru_hcache_head, lru_hcache_tail, entry);
-    GNUNET_free (entry->hello);
-  }
-  entry->hello = GNUNET_copy_message (hello);
-  GNUNET_CONTAINER_DLL_insert_tail (lru_hcache_head, lru_hcache_tail, entry);
-}
-
-
-/**
  * Function called to notify a client about the connection begin ready to queue
  * more data.  "buf" will be NULL and "size" zero if the connection was closed
  * for writing in the meantime.
@@ -2496,7 +2392,7 @@
   LOG_DEBUG ("0x%llx: Received HELLO of %s\n",
              occ->op_id, GNUNET_i2s (&occ->peer_identity));
   occ->hello = GNUNET_malloc (msize);
-  hello_cache_add (&occ->peer_identity, hello);
+  TESTBED_hello_cache_add (&occ->peer_identity, hello);
   memcpy (occ->hello, hello, msize);
   GNUNET_TRANSPORT_get_hello_cancel (occ->ghh);
   occ->ghh = NULL;
@@ -2541,7 +2437,7 @@
   LOG_DEBUG ("0x%llx: Acquiring HELLO of peer %s\n",
              occ->op_id, GNUNET_i2s (&occ->peer_identity));
   /* Lookup for HELLO in hello cache */
-  if (NULL != (hello = hello_cache_lookup (&occ->peer_identity)))
+  if (NULL != (hello = TESTBED_hello_cache_lookup (&occ->peer_identity)))
   {
     LOG_DEBUG ("0x%llx: HELLO of peer %s found in cache\n",
                occ->op_id, GNUNET_i2s (&occ->peer_identity));
@@ -3429,16 +3325,7 @@
   GNUNET_free_non_null (hostname);
   GNUNET_CONFIGURATION_destroy (our_config);
   /* Free hello cache */
-  if (NULL != hello_cache)
-    GNUNET_assert
-        (GNUNET_CONTAINER_multihashmap_size (hello_cache) <= hello_cache_size);
-  while (NULL != lru_hcache_head)
-    hello_cache_remove (lru_hcache_head);
-  if (NULL != hello_cache)
-  {
-    GNUNET_assert (0 == GNUNET_CONTAINER_multihashmap_size (hello_cache));
-    GNUNET_CONTAINER_multihashmap_destroy (hello_cache);
-  }
+  TESTBED_cache_clear ();
 }
 
 
@@ -3516,16 +3403,13 @@
                  GNUNET_CONFIGURATION_get_value_number (cfg, "TESTBED",
                                                         "HELLO_CACHE_SIZE",
                                                         &num));
-  hello_cache_size = (unsigned int) num;
+  TESTBED_cache_init ((unsigned int) num);
   GNUNET_assert (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string 
                 (cfg, "testbed", "HOSTNAME", &hostname));
   our_config = GNUNET_CONFIGURATION_dup (cfg);
   GNUNET_SERVER_add_handlers (server, message_handlers);
   GNUNET_SERVER_disconnect_notify (server, &client_disconnect_cb, NULL);
   ss_map = GNUNET_CONTAINER_multihashmap_create (5, GNUNET_NO);
-  if (1 < hello_cache_size)
-    hello_cache = GNUNET_CONTAINER_multihashmap_create (hello_cache_size / 2,
-                                                        GNUNET_YES);
   shutdown_task_id =
       GNUNET_SCHEDULER_add_delayed_with_priority (GNUNET_TIME_UNIT_FOREVER_REL,
                                                   
GNUNET_SCHEDULER_PRIORITY_IDLE,

Modified: gnunet/src/testbed/gnunet-service-testbed.h
===================================================================
--- gnunet/src/testbed/gnunet-service-testbed.h 2013-01-25 10:31:11 UTC (rev 
25891)
+++ gnunet/src/testbed/gnunet-service-testbed.h 2013-01-25 10:55:49 UTC (rev 
25892)
@@ -24,6 +24,7 @@
  * @author Sree Harsha Totakura
  */
 
+#include "platform.h"
 #include "gnunet_util_lib.h"
 #include "gnunet_testbed_service.h"
 #include "gnunet_transport_service.h"
@@ -783,28 +784,41 @@
 
 
 /**
- * Hello cache entry
+ * Looks up in the hello cache and returns the HELLO of the given peer
+ *
+ * @param id the peer identity of the peer whose HELLO has to be looked up
+ * @return the HELLO message; NULL if not found
  */
-struct HelloCacheEntry
-{
-  /**
-   * DLL next ptr for least recently used hello cache entries
-   */
-  struct HelloCacheEntry *next;
+const struct GNUNET_MessageHeader *
+TESTBED_hello_cache_lookup (const struct GNUNET_PeerIdentity *id);
 
-  /**
-   * DLL prev ptr for least recently used hello cache entries
-   */
-  struct HelloCacheEntry *prev;
+/**
+ * Caches the HELLO of the given peer. Updates the HELLO if it was already
+ * cached before
+ *
+ * @param id the peer identity of the peer whose HELLO has to be cached
+ * @param hello the HELLO message
+ */
+void
+TESTBED_hello_cache_add (const struct GNUNET_PeerIdentity *id,
+                         const struct GNUNET_MessageHeader *hello);
 
-  /**
-   * The key for this entry
-   */
-  struct GNUNET_HashCode key;
-  
-  /**
-   * The HELLO message
-   */
-  struct GNUNET_MessageHeader *hello;
-};
 
+/**
+ * Initializes the cache
+ *
+ * @param size the size of the cache
+ */
+void
+TESTBED_cache_init (unsigned int size);
+
+
+/**
+ * Clear cache
+ */
+void
+TESTBED_cache_clear ();
+
+
+
+/* End of gnunet-service-testbed.h */

Added: gnunet/src/testbed/gnunet-service-testbed_hc.c
===================================================================
--- gnunet/src/testbed/gnunet-service-testbed_hc.c                              
(rev 0)
+++ gnunet/src/testbed/gnunet-service-testbed_hc.c      2013-01-25 10:55:49 UTC 
(rev 25892)
@@ -0,0 +1,194 @@
+/*
+  This file is part of GNUnet.
+  (C) 2012 Christian Grothoff (and other contributing authors)
+
+  GNUnet is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published
+  by the Free Software Foundation; either version 2, or (at your
+  option) any later version.
+
+  GNUnet is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  General Public License for more details.
+
+  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.
+*/
+
+/**
+ * @file testbed/gnunet-service-testbed_hc.h
+ * @brief testbed cache implementation
+ * @author Sree Harsha Totakura
+ */
+
+#include "gnunet-service-testbed.h"
+
+/**
+ * Hello cache entry
+ */
+struct HelloCacheEntry
+{
+  /**
+   * DLL next ptr for least recently used hello cache entries
+   */
+  struct HelloCacheEntry *next;
+
+  /**
+   * DLL prev ptr for least recently used hello cache entries
+   */
+  struct HelloCacheEntry *prev;
+
+  /**
+   * The key for this entry
+   */
+  struct GNUNET_HashCode key;
+  
+  /**
+   * The HELLO message
+   */
+  struct GNUNET_MessageHeader *hello;
+};
+
+/**
+ * Hashmap to maintain HELLO cache
+ */
+static struct GNUNET_CONTAINER_MultiHashMap *hello_cache;
+
+/**
+ * DLL head for least recently used hello cache entries; least recently used
+ * cache items are at the head
+ */
+static struct HelloCacheEntry *lru_hcache_head;
+
+/**
+ * DLL tail for least recently used hello cache entries; recently used cache
+ * items are at the tail
+ */
+static struct HelloCacheEntry *lru_hcache_tail;
+
+/**
+ * The size of HELLO cache
+ */
+static unsigned int hello_cache_size;
+
+
+/**
+ * Looks up in the hello cache and returns the HELLO of the given peer
+ *
+ * @param id the peer identity of the peer whose HELLO has to be looked up
+ * @return the HELLO message; NULL if not found
+ */
+const struct GNUNET_MessageHeader *
+TESTBED_hello_cache_lookup (const struct GNUNET_PeerIdentity *id)
+{
+  struct HelloCacheEntry *entry;
+
+  if (NULL == hello_cache)
+    return NULL;
+  entry = GNUNET_CONTAINER_multihashmap_get (hello_cache, &id->hashPubKey);
+  if (NULL == entry)
+    return NULL;
+  GNUNET_CONTAINER_DLL_remove (lru_hcache_head, lru_hcache_tail, entry);
+  GNUNET_CONTAINER_DLL_insert_tail (lru_hcache_head, lru_hcache_tail, entry);
+  return entry->hello;
+}
+
+
+/**
+ * Removes the given hello cache centry from hello cache and frees its 
resources
+ *
+ * @param entry the entry to remove
+ */
+static void
+TESTBED_hello_cache_remove (struct HelloCacheEntry *entry)
+{
+  GNUNET_CONTAINER_DLL_remove (lru_hcache_head, lru_hcache_tail, entry);
+  GNUNET_assert (GNUNET_YES == 
+                 GNUNET_CONTAINER_multihashmap_remove (hello_cache,
+                                                       &entry->key,
+                                                       entry));
+  GNUNET_free (entry->hello);
+  GNUNET_free (entry);
+}
+
+
+/**
+ * Caches the HELLO of the given peer. Updates the HELLO if it was already
+ * cached before
+ *
+ * @param id the peer identity of the peer whose HELLO has to be cached
+ * @param hello the HELLO message
+ */
+void
+TESTBED_hello_cache_add (const struct GNUNET_PeerIdentity *id,
+                         const struct GNUNET_MessageHeader *hello)
+{
+  struct HelloCacheEntry *entry;
+  
+  if (NULL == hello_cache)
+    return;
+  entry = GNUNET_CONTAINER_multihashmap_get (hello_cache, &id->hashPubKey);
+  if (NULL == entry)
+  {
+    entry = GNUNET_malloc (sizeof (struct HelloCacheEntry));
+    memcpy (&entry->key, &id->hashPubKey, sizeof (struct GNUNET_HashCode));
+    if (GNUNET_CONTAINER_multihashmap_size (hello_cache) == hello_cache_size)
+    {
+      GNUNET_assert (NULL != lru_hcache_head);
+      TESTBED_hello_cache_remove (lru_hcache_head);
+    }
+    GNUNET_assert (GNUNET_OK == GNUNET_CONTAINER_multihashmap_put 
+                   (hello_cache,
+                    &entry->key,
+                    entry,
+                    GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST));
+  }
+  else
+  {
+    GNUNET_CONTAINER_DLL_remove (lru_hcache_head, lru_hcache_tail, entry);
+    GNUNET_free (entry->hello);
+  }
+  entry->hello = GNUNET_copy_message (hello);
+  GNUNET_CONTAINER_DLL_insert_tail (lru_hcache_head, lru_hcache_tail, entry);
+}
+
+
+/**
+ * Initializes the cache
+ *
+ * @param size the size of the cache
+ */
+void
+TESTBED_cache_init (unsigned int size)
+{
+  if (0 == size)
+    return;
+  hello_cache_size = size;
+  if (size > 1)
+    size = size / 2;
+  hello_cache = GNUNET_CONTAINER_multihashmap_create (size, GNUNET_YES);
+}
+
+
+/**
+ * Clear cache
+ */
+void
+TESTBED_cache_clear ()
+{
+  if (NULL != hello_cache)
+    GNUNET_assert
+        (GNUNET_CONTAINER_multihashmap_size (hello_cache) <= hello_cache_size);
+  while (NULL != lru_hcache_head)
+    TESTBED_hello_cache_remove (lru_hcache_head);
+  if (NULL != hello_cache)
+  {
+    GNUNET_assert (0 == GNUNET_CONTAINER_multihashmap_size (hello_cache));
+    GNUNET_CONTAINER_multihashmap_destroy (hello_cache);
+  }
+}
+
+/* end of gnunet-service-testbed_hc.c */