1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/*************************************************
* Timestamp Functions Source File *
* (C) 1999-2005 The Botan Project *
*************************************************/
#include <botan/timers.h>
#include <botan/util.h>
#include <botan/init.h>
#include <ctime>
namespace Botan {
namespace {
Timer* global_timer = 0;
}
/*************************************************
* Timer Access Functions *
*************************************************/
u64bit system_time()
{
return std::time(0);
}
u64bit system_clock()
{
if(!global_timer)
return combine_timers(std::time(0), std::clock(), CLOCKS_PER_SEC);
return global_timer->clock();
}
/*************************************************
* Combine a two time values into a single one *
*************************************************/
u64bit combine_timers(u32bit seconds, u32bit parts, u32bit parts_hz)
{
const u64bit NANOSECONDS_UNITS = 1000000000;
parts *= (NANOSECONDS_UNITS / parts_hz);
return ((seconds * NANOSECONDS_UNITS) + parts);
}
namespace Init {
/*************************************************
* Set the Timer type *
*************************************************/
void set_timer_type(Timer* timer)
{
delete global_timer;
global_timer = timer;
}
}
}
|
