2 This file is part of GNUnet.
3 (C) 2001, 2002, 2006, 2009 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 2, 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 util/speedup.c
23 * @author Matthias Wachs
24 * @brief functions to speedup peer execution by manipulation system time
27 #include "gnunet_time_lib.h"
28 #include "gnunet_scheduler_lib.h"
30 #define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
33 static struct GNUNET_TIME_Relative interval;
35 static struct GNUNET_TIME_Relative delta;
37 static GNUNET_SCHEDULER_TaskIdentifier speedup_task;
41 do_speedup (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
43 static long long current_offset;
45 speedup_task = GNUNET_SCHEDULER_NO_TASK;
46 if (0 != (GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason))
48 current_offset += delta.rel_value;
49 GNUNET_TIME_set_offset (current_offset);
50 LOG (GNUNET_ERROR_TYPE_DEBUG,
51 "Speeding up execution time by %llu ms\n", delta.rel_value);
52 speedup_task = GNUNET_SCHEDULER_add_delayed (interval, &do_speedup, NULL);
57 GNUNET_SPEEDUP_start_ (const struct GNUNET_CONFIGURATION_Handle *cfg)
59 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_time (cfg, "testing", "SPEEDUP_INTERVAL", &interval))
61 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_time (cfg, "testing", "SPEEDUP_DELTA", &delta))
64 if ((0 == interval.rel_value) || (0 == delta.rel_value))
66 LOG (GNUNET_ERROR_TYPE_DEBUG,
67 "Speed up disabled\n");
70 LOG (GNUNET_ERROR_TYPE_DEBUG,
71 "Speed up execution time %llu ms every %llu ms\n",
72 delta.rel_value, interval.rel_value);
73 speedup_task = GNUNET_SCHEDULER_add_now_with_lifeness (GNUNET_NO, &do_speedup, NULL);
79 GNUNET_SPEEDUP_stop_ ( )
81 if (GNUNET_SCHEDULER_NO_TASK != speedup_task)
83 GNUNET_SCHEDULER_cancel (speedup_task);
84 speedup_task = GNUNET_SCHEDULER_NO_TASK;
86 if ((0 != interval.rel_value) && (0 != delta.rel_value))
87 LOG (GNUNET_ERROR_TYPE_DEBUG,
88 "Stopped execution speed up\n");
93 /* end of speedup.c */