2 This file is part of GNUnet.
3 (C) 2009, 2010 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file fs/gnunet-service-fs.h
23 * @brief shared data structures of gnunet-service-fs.c
24 * @author Christian Grothoff
26 #ifndef GNUNET_SERVICE_FS_H
27 #define GNUNET_SERVICE_FS_H
29 #include "gnunet_util_lib.h"
30 #include "gnunet_statistics_service.h"
31 #include "gnunet_transport_service.h"
32 #include "gnunet_core_service.h"
33 #include "gnunet_block_lib.h"
38 * Should we introduce random latency in processing? Required for proper
39 * implementation of GAP, but can be disabled for performance evaluation of
40 * the basic routing algorithm.
42 * Note that with delays enabled, performance can be significantly lower
43 * (several orders of magnitude in 2-peer test runs); if you want to
44 * measure throughput of other components, set this to NO. Also, you
45 * might want to consider changing 'RETRY_PROBABILITY_INV' to 1 for
46 * a rather wasteful mode of operation (that might still get the highest
47 * throughput overall).
49 * Performance measurements (for 50 MB file, 2 peers):
51 * - Without delays: 3300 kb/s
52 * - With delays: 101 kb/s
54 #define SUPPORT_DELAYS GNUNET_NO
61 struct GSF_ConnectedPeer;
66 struct GSF_PendingRequest;
71 struct GSF_LocalClient;
75 * Our connection to the datastore.
77 extern struct GNUNET_DATASTORE_Handle *GSF_dsh;
82 extern const struct GNUNET_CONFIGURATION_Handle *GSF_cfg;
85 * Handle for reporting statistics.
87 extern struct GNUNET_STATISTICS_Handle *GSF_stats;
90 * Pointer to handle to the core service (points to NULL until we've
93 extern struct GNUNET_CORE_Handle *GSF_core;
96 * Handle for DHT operations.
98 extern struct GNUNET_DHT_Handle *GSF_dht;
101 * How long do requests typically stay in the routing table?
103 extern struct GNUNET_LOAD_Value *GSF_rt_entry_lifetime;
106 * Typical priorities we're seeing from other peers right now. Since
107 * most priorities will be zero, this value is the weighted average of
108 * non-zero priorities seen "recently". In order to ensure that new
109 * values do not dramatically change the ratio, values are first
110 * "capped" to a reasonable range (+N of the current value) and then
111 * averaged into the existing value by a ratio of 1:N. Hence
112 * receiving the largest possible priority can still only raise our
113 * "current_priorities" by at most 1.
115 extern double GSF_current_priorities;
118 * How many query messages have we received 'recently' that
119 * have not yet been claimed as cover traffic?
121 extern unsigned int GSF_cover_query_count;
124 * How many content messages have we received 'recently' that
125 * have not yet been claimed as cover traffic?
127 extern unsigned int GSF_cover_content_count;
132 extern struct GNUNET_BLOCK_Context *GSF_block_ctx;
136 * Test if the DATABASE (GET) load on this peer is too high
137 * to even consider processing the query at
140 * @return GNUNET_YES if the load is too high to do anything (load high)
141 * GNUNET_NO to process normally (load normal)
142 * GNUNET_SYSERR to process for free (load low)
145 GSF_test_get_load_too_high_ (uint32_t priority);
149 * We've just now completed a datastore request. Update our
150 * datastore load calculations.
152 * @param start time when the datastore request was issued
155 GSF_update_datastore_delay_ (struct GNUNET_TIME_Absolute start);
160 /* end of gnunet-service-fs.h */