GNUnet  0.11.x
speedup.c
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1 /*
2  This file is part of GNUnet.
3  Copyright (C) 2011-2013 GNUnet e.V.
4 
5  GNUnet is free software: you can redistribute it and/or modify it
6  under the terms of the GNU Affero General Public License as published
7  by the Free Software Foundation, either version 3 of the License,
8  or (at your option) any later version.
9 
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  Affero General Public License for more details.
14 
15  You should have received a copy of the GNU Affero General Public License
16  along with this program. If not, see <http://www.gnu.org/licenses/>.
17 
18  SPDX-License-Identifier: AGPL3.0-or-later
19  */
20 
26 #include "platform.h"
27 #include "gnunet_util_lib.h"
28 #include "speedup.h"
29 
30 #define LOG(kind, ...) GNUNET_log_from (kind, "util-speedup", __VA_ARGS__)
31 
32 
34 
36 
38 
39 
40 static void
41 do_speedup (void *cls)
42 {
43  static long long current_offset;
44 
45  (void) cls;
46  speedup_task = NULL;
47  current_offset += delta.rel_value_us;
48  GNUNET_TIME_set_offset (current_offset);
50  "Speeding up execution time by %s\n",
52  speedup_task = GNUNET_SCHEDULER_add_delayed (interval,
53  &do_speedup,
54  NULL);
55 }
56 
57 
64 int
66 {
67  GNUNET_assert (NULL == speedup_task);
68  if (GNUNET_OK !=
70  "testing",
71  "SPEEDUP_INTERVAL",
72  &interval))
73  return GNUNET_SYSERR;
74  if (GNUNET_OK !=
76  "testing",
77  "SPEEDUP_DELTA",
78  &delta))
79  return GNUNET_SYSERR;
80 
81  if ((0 == interval.rel_value_us) ||
82  (0 == delta.rel_value_us))
83  {
85  "Speed up disabled\n");
86  return GNUNET_OK;
87  }
89  "Speed up execution by %s\n",
92  "Speed up executed every %s\n",
95  &do_speedup,
96  NULL);
97  return GNUNET_OK;
98 }
99 
100 
104 void
106 {
107  if (NULL != speedup_task)
108  {
109  GNUNET_SCHEDULER_cancel (speedup_task);
110  speedup_task = NULL;
111  }
112  if ((0 != interval.rel_value_us) &&
113  (0 != delta.rel_value_us))
115  "Stopped execution speed up\n");
116 }
117 
118 
119 /* end of speedup.c */
int GNUNET_CONFIGURATION_get_value_time(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, struct GNUNET_TIME_Relative *time)
Get a configuration value that should be a relative time.
static const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration we are using.
Definition: gnunet-abd.c:36
uint64_t rel_value_us
The actual value.
static struct GNUNET_TIME_Relative delta
Definition: speedup.c:35
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static struct GNUNET_SCHEDULER_Task * speedup_task
Definition: speedup.c:37
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
void GNUNET_TIME_set_offset(long long offset)
Set the timestamp offset for this instance.
Definition: time.c:53
static void do_speedup(void *cls)
Definition: speedup.c:41
#define LOG(kind,...)
Definition: speedup.c:30
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now_with_lifeness(int lifeness, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible with the (transitive) ignore-shutdown flag either e...
Definition: scheduler.c:1347
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1253
static struct GNUNET_TIME_Relative interval
Definition: speedup.c:33
const char * GNUNET_STRINGS_relative_time_to_string(struct GNUNET_TIME_Relative delta, int do_round)
Give relative time in human-readable fancy format.
Definition: strings.c:687
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
int GNUNET_SPEEDUP_start_(const struct GNUNET_CONFIGURATION_Handle *cfg)
Start task that may speed up our system clock artificially.
Definition: speedup.c:65
configuration data
Definition: configuration.c:85
Entry in list of pending tasks.
Definition: scheduler.c:134
Time for relative time used by GNUnet, in microseconds.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:966
void GNUNET_SPEEDUP_stop_()
Stop tasks that modify clock behavior.
Definition: speedup.c:105