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"
36 #define DEBUG_FS GNUNET_YES
40 * Should we introduce random latency in processing? Required for proper
41 * implementation of GAP, but can be disabled for performance evaluation of
42 * the basic routing algorithm.
44 * Note that with delays enabled, performance can be significantly lower
45 * (several orders of magnitude in 2-peer test runs); if you want to
46 * measure throughput of other components, set this to NO. Also, you
47 * might want to consider changing 'RETRY_PROBABILITY_INV' to 1 for
48 * a rather wasteful mode of operation (that might still get the highest
49 * throughput overall).
51 * Performance measurements (for 50 MB file, 2 peers):
53 * - Without delays: 3300 kb/s
54 * - With delays: 101 kb/s
56 #define SUPPORT_DELAYS GNUNET_NO
60 * At what frequency should our datastore load decrease
61 * automatically (since if we don't use it, clearly the
62 * load must be going down).
64 #define DATASTORE_LOAD_AUTODECLINE GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, 250)
71 struct GSF_ConnectedPeer;
76 struct GSF_PendingRequest;
81 struct GSF_LocalClient;
84 * Information kept per plan per request ('pe' module).
86 struct GSF_RequestPlan;
89 * Our connection to the datastore.
91 extern struct GNUNET_DATASTORE_Handle *GSF_dsh;
96 extern const struct GNUNET_CONFIGURATION_Handle *GSF_cfg;
99 * Handle for reporting statistics.
101 extern struct GNUNET_STATISTICS_Handle *GSF_stats;
104 * Pointer to handle to the core service (points to NULL until we've
107 extern struct GNUNET_CORE_Handle *GSF_core;
110 * Handle for DHT operations.
112 extern struct GNUNET_DHT_Handle *GSF_dht;
115 * How long do requests typically stay in the routing table?
117 extern struct GNUNET_LOAD_Value *GSF_rt_entry_lifetime;
120 * Typical priorities we're seeing from other peers right now. Since
121 * most priorities will be zero, this value is the weighted average of
122 * non-zero priorities seen "recently". In order to ensure that new
123 * values do not dramatically change the ratio, values are first
124 * "capped" to a reasonable range (+N of the current value) and then
125 * averaged into the existing value by a ratio of 1:N. Hence
126 * receiving the largest possible priority can still only raise our
127 * "current_priorities" by at most 1.
129 extern double GSF_current_priorities;
132 * How many query messages have we received 'recently' that
133 * have not yet been claimed as cover traffic?
135 extern unsigned int GSF_cover_query_count;
138 * How many content messages have we received 'recently' that
139 * have not yet been claimed as cover traffic?
141 extern unsigned int GSF_cover_content_count;
146 extern struct GNUNET_BLOCK_Context *GSF_block_ctx;
150 * Test if the DATABASE (GET) load on this peer is too high
151 * to even consider processing the query at
154 * @return GNUNET_YES if the load is too high to do anything (load high)
155 * GNUNET_NO to process normally (load normal)
156 * GNUNET_SYSERR to process for free (load low)
159 GSF_test_get_load_too_high_ (uint32_t priority);
163 * We've just now completed a datastore request. Update our
164 * datastore load calculations.
166 * @param start time when the datastore request was issued
169 GSF_update_datastore_delay_ (struct GNUNET_TIME_Absolute start);
174 /* end of gnunet-service-fs.h */