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
|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Buffers;
using Xunit;
namespace System.MemoryTests
{
public static partial class MemoryTests
{
[Fact]
public static void MemoryPin()
{
int[] array = { 1, 2, 3, 4, 5 };
Memory<int> memory = array;
MemoryHandle handle = memory.Pin();
Assert.True(handle.HasPointer);
unsafe
{
int* pointer = (int*)handle.Pointer;
GC.Collect();
for (int i = 0; i < memory.Length; i++)
{
Assert.Equal(array[i], pointer[i]);
}
}
handle.Dispose();
}
[Fact]
public static void MemoryFromEmptyArrayPin()
{
Memory<int> memory = new int[0];
MemoryHandle handle = memory.Pin();
Assert.True(handle.HasPointer);
handle.Dispose();
}
[Fact]
public static void DefaultMemoryPin()
{
Memory<int> memory = default;
MemoryHandle handle = memory.Pin();
Assert.False(handle.HasPointer);
unsafe
{
Assert.True(handle.Pointer == null);
}
handle.Dispose();
}
[Fact]
public static void MemoryPinAndSlice()
{
int[] array = { 1, 2, 3, 4, 5 };
Memory<int> memory = array;
memory = memory.Slice(1);
MemoryHandle handle = memory.Pin();
Span<int> span = memory.Span;
Assert.True(handle.HasPointer);
unsafe
{
int* pointer = (int*)handle.Pointer;
GC.Collect();
for (int i = 0; i < memory.Length; i++)
{
Assert.Equal(array[i + 1], pointer[i]);
}
for (int i = 0; i < memory.Length; i++)
{
Assert.Equal(array[i + 1], span[i]);
}
}
handle.Dispose();
}
[Fact]
public static void OwnedMemoryPin()
{
int[] array = { 1, 2, 3, 4, 5 };
OwnedMemory<int> owner = new CustomMemoryForTest<int>(array);
Memory<int> memory = owner.Memory;
MemoryHandle handle = memory.Pin();
Assert.True(handle.HasPointer);
unsafe
{
int* pointer = (int*)handle.Pointer;
GC.Collect();
for (int i = 0; i < memory.Length; i++)
{
Assert.Equal(array[i], pointer[i]);
}
}
handle.Dispose();
}
[Fact]
public static void OwnedMemoryPinAndSlice()
{
int[] array = { 1, 2, 3, 4, 5 };
OwnedMemory<int> owner = new CustomMemoryForTest<int>(array);
Memory<int> memory = owner.Memory.Slice(1);
MemoryHandle handle = memory.Pin();
Span<int> span = memory.Span;
Assert.True(handle.HasPointer);
unsafe
{
int* pointer = (int*)handle.Pointer;
GC.Collect();
for (int i = 0; i < memory.Length; i++)
{
Assert.Equal(array[i + 1], pointer[i]);
}
for (int i = 0; i < memory.Length; i++)
{
Assert.Equal(array[i + 1], span[i]);
}
}
handle.Dispose();
}
}
}
|
