1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // <functional>
11
12 // class function<R(ArgTypes...)>
13
14 // template<class A> function(allocator_arg_t, const A&, const function&);
15
16
17 #include <functional>
18 #include <cassert>
19
20 #include "min_allocator.h"
21 #include "test_allocator.h"
22 #include "count_new.hpp"
23 #include "../function_types.h"
24
25 class DummyClass {};
26
27 template <class FuncType, class AllocType>
test_FunctionObject(AllocType & alloc)28 void test_FunctionObject(AllocType& alloc)
29 {
30 assert(globalMemCounter.checkOutstandingNewEq(0));
31 {
32 // Construct function from FunctionObject.
33 std::function<FuncType> f = FunctionObject();
34 assert(FunctionObject::count == 1);
35 assert(globalMemCounter.checkOutstandingNewEq(1));
36 assert(f.template target<FunctionObject>());
37 assert(f.template target<FuncType>() == 0);
38 assert(f.template target<FuncType*>() == 0);
39 // Copy function with allocator
40 std::function<FuncType> f2(std::allocator_arg, alloc, f);
41 assert(FunctionObject::count == 2);
42 assert(globalMemCounter.checkOutstandingNewEq(2));
43 assert(f2.template target<FunctionObject>());
44 assert(f2.template target<FuncType>() == 0);
45 assert(f2.template target<FuncType*>() == 0);
46 }
47 assert(FunctionObject::count == 0);
48 assert(globalMemCounter.checkOutstandingNewEq(0));
49 }
50
51 template <class FuncType, class AllocType>
test_FreeFunction(AllocType & alloc)52 void test_FreeFunction(AllocType& alloc)
53 {
54 assert(globalMemCounter.checkOutstandingNewEq(0));
55 {
56 // Construct function from function pointer.
57 FuncType* target = &FreeFunction;
58 std::function<FuncType> f = target;
59 assert(globalMemCounter.checkOutstandingNewEq(0));
60 assert(f.template target<FuncType*>());
61 assert(*f.template target<FuncType*>() == target);
62 assert(f.template target<FuncType>() == 0);
63 // Copy function with allocator
64 std::function<FuncType> f2(std::allocator_arg, alloc, f);
65 assert(globalMemCounter.checkOutstandingNewEq(0));
66 assert(f2.template target<FuncType*>());
67 assert(*f2.template target<FuncType*>() == target);
68 assert(f2.template target<FuncType>() == 0);
69 }
70 assert(globalMemCounter.checkOutstandingNewEq(0));
71 }
72
73 template <class TargetType, class FuncType, class AllocType>
test_MemFunClass(AllocType & alloc)74 void test_MemFunClass(AllocType& alloc)
75 {
76 assert(globalMemCounter.checkOutstandingNewEq(0));
77 {
78 // Construct function from function pointer.
79 TargetType target = &MemFunClass::foo;
80 std::function<FuncType> f = target;
81 assert(globalMemCounter.checkOutstandingNewEq(0));
82 assert(f.template target<TargetType>());
83 assert(*f.template target<TargetType>() == target);
84 assert(f.template target<FuncType*>() == 0);
85 // Copy function with allocator
86 std::function<FuncType> f2(std::allocator_arg, alloc, f);
87 assert(globalMemCounter.checkOutstandingNewEq(0));
88 assert(f2.template target<TargetType>());
89 assert(*f2.template target<TargetType>() == target);
90 assert(f2.template target<FuncType*>() == 0);
91 }
92 assert(globalMemCounter.checkOutstandingNewEq(0));
93 }
94
95 template <class Alloc>
test_for_alloc(Alloc & alloc)96 void test_for_alloc(Alloc& alloc)
97 {
98 // Large FunctionObject -- Allocation should occur
99 test_FunctionObject<int()>(alloc);
100 test_FunctionObject<int(int)>(alloc);
101 test_FunctionObject<int(int, int)>(alloc);
102 test_FunctionObject<int(int, int, int)>(alloc);
103 // Free function -- No allocation should occur
104 test_FreeFunction<int()>(alloc);
105 test_FreeFunction<int(int)>(alloc);
106 test_FreeFunction<int(int, int)>(alloc);
107 test_FreeFunction<int(int, int, int)>(alloc);
108 // Member function -- No allocation should occur.
109 test_MemFunClass<int(MemFunClass::*)() const, int(MemFunClass&)>(alloc);
110 test_MemFunClass<int(MemFunClass::*)(int) const, int(MemFunClass&, int)>(alloc);
111 test_MemFunClass<int(MemFunClass::*)(int, int) const, int(MemFunClass&, int, int)>(alloc);
112 }
113
main()114 int main()
115 {
116 {
117 bare_allocator<DummyClass> alloc;
118 test_for_alloc(alloc);
119 }
120 {
121 non_default_test_allocator<DummyClass> alloc(42);
122 test_for_alloc(alloc);
123 }
124 }
125