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
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/* Copyright 2003 - 2016, The libsigc++ Development Team
* Assigned to public domain. Use as you wish without restriction.
*/
#include <iostream>
#include <sigc++/signal.h>
#include <sigc++/functors/mem_fun.h>
#include <boost/timer/timer.hpp>
const int COUNT = 10000000;
struct foo : public sigc::trackable
{
int bar(int a);
int c;
};
int
foo::bar(int a)
{
int b = c;
c = a;
return b;
}
void
test_slot_call()
{
foo foobar1;
// slot benchmark ...
sigc::slot<int(int)> slot = sigc::mem_fun(foobar1, &foo::bar);
std::cout << "elapsed time for calling a slot " << COUNT << " times:" << std::endl;
boost::timer::auto_cpu_timer timer;
for (int i = 0; i < COUNT; ++i)
slot(i);
}
void
test_signal_emit()
{
sigc::signal<int(int)> emitter;
std::cout << "elapsed time for " << COUNT << " emissions (0 slots):" << std::endl;
boost::timer::auto_cpu_timer timer;
for (int i = 0; i < COUNT; ++i)
emitter(i);
}
void
test_connected_signal_emit()
{
foo foobar1;
sigc::signal<int(int)> emitter;
emitter.connect(mem_fun(foobar1, &foo::bar));
std::cout << "elapsed time for " << COUNT << " emissions (1 slot):" << std::endl;
boost::timer::auto_cpu_timer timer;
for (int i = 0; i < COUNT; ++i)
emitter(i);
}
void
test_connected_multiple_signal_emit()
{
foo foobar1, foobar2, foobar3, foobar4, foobar5;
sigc::signal<int(int)> emitter;
emitter.connect(mem_fun(foobar2, &foo::bar));
emitter.connect(mem_fun(foobar3, &foo::bar));
emitter.connect(mem_fun(foobar4, &foo::bar));
emitter.connect(mem_fun(foobar5, &foo::bar));
std::cout << "elapsed time for " << COUNT << " emissions (5 slots):" << std::endl;
boost::timer::auto_cpu_timer timer;
for (int i = 0; i < COUNT; ++i)
emitter(i);
}
void
test_connect_disconnect()
{
foo foobar1;
sigc::signal<int(int)> emitter;
sigc::connection conn;
std::cout << "elapsed time for " << COUNT << " connections/disconnections:" << std::endl;
boost::timer::auto_cpu_timer timer;
for (int i = 0; i < COUNT; ++i)
{
conn = emitter.connect(mem_fun(foobar1, &foo::bar));
conn.disconnect();
}
}
int
main()
{
// slot benchmark ...
test_slot_call();
// emission benchmark (zero slots) ...
test_signal_emit();
// emission benchmark (one slot) ...
test_connected_signal_emit();
// emission benchmark (five slot) ...
test_connected_multiple_signal_emit();
// connection / disconnection benchmark ...
test_connect_disconnect();
}
|
