-
Notifications
You must be signed in to change notification settings - Fork 11
/
Copy pathmain.cpp
192 lines (166 loc) · 6.31 KB
/
main.cpp
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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
#include "src/delegate.h"
#include <cassert>
#include <chrono>
#include <cstdio>
#include <functional>
class simple_dummy_class
{
public:
simple_dummy_class() {}
};
// Declare some functions of varying complexity...
void SimpleStaticFunction(simple_dummy_class &, int num) {
std::printf("In SimpleStaticFunction. Num=%d\n", num);
}
class CBaseClass {
protected:
const char *m_name;
public:
CBaseClass(const char *name) : m_name(name) {}
virtual ~CBaseClass() { }
void SimpleMemberFunction(int num) {
std::printf("In SimpleMemberFunction in %s. Num=%d\n", m_name, num);
}
void ConstSimpleMemberFunction(int num) const
{
std::printf("In ConstSimpleMemberFunction in %s. Num=%d\n", m_name, num);
}
void ConstMemberFunction(int num) const {
std::printf("In ConstMemberFunction in %s. Num=%d\n", m_name, num);
}
virtual void SimpleVirtualFunction(int num) {
std::printf("In SimpleVirtualFunction in %s. Num=%d\n", m_name, num);
}
static void StaticMemberFunction(simple_dummy_class &, int num) {
std::printf("In StaticMemberFunction. Num=%d\n", num);
}
};
class COtherClass {
[[maybe_unused]] double rubbish; // to ensure this class has non-zero size.
public:
virtual ~COtherClass() { }
virtual void UnusedVirtualFunction(void) { }
virtual void TrickyVirtualFunction(int num) = 0;
};
class VeryBigClass {
[[maybe_unused]] int letsMakeThingsComplicated[400];
};
// This declaration ensures that we get a convoluted class heirarchy.
class CDerivedClass : public VeryBigClass, virtual public COtherClass, virtual public CBaseClass
{
double m_somemember[8];
public:
CDerivedClass() : CBaseClass("Base of Derived") { m_somemember[0] = 1.2345; }
void SimpleDerivedFunction(int num) { std::printf("In SimpleDerived. Num=%d\n", num); }
virtual void AnotherUnusedVirtualFunction(int) {}
virtual void TrickyVirtualFunction(int num) override {
std::printf("In Derived TrickyMemberFunction. Num=%d\n", num);
}
};
typedef delegate<void(int)> MyDelegate;
template<class _FunctionClass>
void dump_mfp(_FunctionClass *object, void (_FunctionClass::*mfp)(int num))
{
unsigned long *ptr = (unsigned long *)&mfp;
int size = sizeof(mfp) / sizeof(*ptr);
(object->*mfp)(1);
std::printf("Size = %d bytes:\n", (int)sizeof(mfp));
for (int i = 0; i < size; i++)
std::printf(" %08X\n", (std::uint32_t)ptr[i]);
}
void dump_vtable(const char *name, void *ptr)
{
void **vtable = *reinterpret_cast<void ***>(ptr);
std::printf("%s: vtable @ %p = %p %p %p %p\n", name, *vtable, vtable[0], vtable[1], vtable[2], vtable[3]);
}
void print_num_std_function(int i)
{
std::printf("In std:function. Num=%d\n",i);
}
int main(int, char**)
{
#if defined(__clang__)
std::printf("Clang version: %d.%d.%d\n", __clang_major__, __clang_minor__, __clang_patchlevel__);
#elif defined(_MSC_VER)
std::printf("MSC_VER version: %d\n", _MSC_VER);
#elif defined(__GNUC__)
std::printf("GCC version: %d.%d.%d\n", __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__);
#else
std::printf("Unknown compiler\n");
#endif //
#if defined(__arm__) || defined(_M_ARM)
std::printf("ARM\n");
#elif defined(__aarch64__)
std::printf("ARM 64bit\n");
#elif defined(__MIPSEL__) || defined(__mips_isa_rev)
std::printf("MIPS\n");
#elif defined(__mips64)
std::printf("MIPS 64bit\n");
#elif defined(_M_PPC) || defined(__powerpc__)
std::printf("PPC\n");
#elif defined(__powerpc64__)
std::printf("PPC 64bit\n");
#elif defined(__i386__) || defined(_M_IX86)
std::printf("Intel x86\n");
#elif defined(__x86_64__) || defined(_M_X64)
std::printf("Intel x64\n");
#else
std::printf("Unknown CPU\n");
#endif //
std::printf("Pointer size %d\n", (int)sizeof(void *));
#if MAME_DELEGATE_USE_TYPE==MAME_DELEGATE_TYPE_COMPATIBLE
std::printf("Using slow compatible delegates\n");
#elif MAME_DELEGATE_USE_TYPE==MAME_DELEGATE_TYPE_ITANIUM
std::printf("Using fast internal Itanium delegates\n");
#elif MAME_DELEGATE_USE_TYPE==MAME_DELEGATE_TYPE_MSVC
std::printf("Using fast internal MSVC delegates\n");
#endif
simple_dummy_class machine;
MyDelegate funclist[12]; // delegates are initialized to empty
CBaseClass a("Base A");
CBaseClass b("Base B");
CDerivedClass c;
CDerivedClass d;
dump_vtable("A", &a);
dump_vtable("D", &d);
dump_mfp(&a, &CBaseClass::SimpleMemberFunction);
dump_mfp(&a, &CBaseClass::SimpleVirtualFunction);
dump_mfp(&d, &CDerivedClass::SimpleDerivedFunction);
dump_mfp(&d, &CDerivedClass::TrickyVirtualFunction);
// Binding a simple member function
std::printf("funclist[0] = MyDelegate(&CBaseClass::SimpleMemberFunction, &a);\n");
funclist[0] = MyDelegate(&CBaseClass::SimpleMemberFunction, &a);
std::printf("funclist[1] = MyDelegate(&CBaseClass::ConstSimpleMemberFunction, &a);\n");
funclist[1] = MyDelegate(&CBaseClass::ConstSimpleMemberFunction, &a);
// You can also bind static (free) functions
std::printf("funclist[2] = MyDelegate(SimpleStaticFunction,&machine);\n");
funclist[2] = MyDelegate(&SimpleStaticFunction,&machine);
// and static member functions
std::printf("funclist[3] = MyDelegate(&CBaseClass::StaticMemberFunction, &machine);\n");
funclist[3] = MyDelegate(&CBaseClass::StaticMemberFunction, &machine);
// and virtual member functions
std::printf("funclist[4] = MyDelegate(&CBaseClass::SimpleVirtualFunction, &b);\n");
funclist[4] = MyDelegate(&CBaseClass::SimpleVirtualFunction, &b);
std::printf("funclist[5] = MyDelegate(&CBaseClass::SimpleVirtualFunction,(CBaseClass *)&d);\n");
funclist[5] = MyDelegate(&CBaseClass::SimpleVirtualFunction,(CBaseClass *)&d);
std::printf("funclist[6] = MyDelegate(&CDerivedClass::TrickyVirtualFunction,&c);\n");
funclist[6] = MyDelegate(&CDerivedClass::TrickyVirtualFunction,&c);
std::printf("funclist[7] = MyDelegate(&COtherClass::TrickyVirtualFunction,(COtherClass*)&c);\n");
funclist[7] = MyDelegate(&COtherClass::TrickyVirtualFunction,(COtherClass*)&c);
std::printf("funclist[8] = MyDelegate(&CDerivedClass::SimpleDerivedFunction,&c);\n");
funclist[8] = MyDelegate(&CDerivedClass::SimpleDerivedFunction,&c);
std::printf("funclist[9] = std::function<void(int)>\n");
std::function<void(int)> func = print_num_std_function;
funclist[9] = MyDelegate(func);
std::printf("funclist[10] = [](int a) -> void {}\n");
funclist[10] = MyDelegate([](int a) -> void { std::printf("In lambda. Num=%d\n",a); });
fflush(stdout);
for (int i = 0; i<11; i++) {
if (!funclist[i].isnull()) {
funclist[i](i);
fflush(stdout);
}
}
std::printf("Done\n");
return 0;
}