static void Main(string[] args)
{
Demo1 d1 = new Demo1();
d1.Test();
Demo2 d2 = new Demo2();
//d2.Test();
d2.Test3();
GC.Collect();
Demo3 d3 = new Demo3();
d3.Test();
Demo4 d4 = new Demo4();
d4.Test();
Demo5 d5 = new Demo5();
d5.Test();
d5.Test2();
d5.Test3();
Demo6 d6 = new Demo6();
d6.Test();
Console.ReadLine();
}
public void Test3()
{
// matrix ByVal
const int DIM = 5;
int[,] matrix = new int[DIM, DIM];
Console.WriteLine("\n\nMatrix before call:");
for (int i = 0; i < DIM; i++)
{
for (int j = 0; j < DIM; j++)
{
matrix[i, j] = j;
Console.Write(" " + matrix[i, j]);
}
Console.WriteLine("");
}
int sum3 = Demo5.TestMatrixOfInts(matrix, DIM);
Console.WriteLine("\nSum of elements:" + sum3);
Console.WriteLine("\nMatrix after call:");
for (int i = 0; i < DIM; i++)
{
for (int j = 0; j < DIM; j++)
{
Console.Write(" " + matrix[i, j]);
}
Console.WriteLine("");
}
}
static void Main(string[] args)
{
TestOne();
//获取系统时间函数
Demo1 d1 = new Demo1();
d1.Test();
//托管内存和非托管内存之间的创建和拷贝
Demo2 d2 = new Demo2();
//d2.Test();
d2.Test3();
GC.Collect();
//创建非托管程序中指针的对应托管指针，从而为后续访问非托管对象提供方便。
Demo3 d3 = new Demo3();
d3.Test();
//回调函数的示例
Demo4 d4 = new Demo4();
d4.Test();
Demo5 d5 = new Demo5();
d5.Test();
d5.Test2();
d5.Test3();
//字符串数组
Demo6 d6 = new Demo6();
d6.Test();
Console.ReadLine();
}
public void Test2()
{
int[] array2 = new int[10];
int size = array2.Length;
Console.WriteLine("\n\nInteger array passed ByRef before call:");
for (int i = 0; i < array2.Length; i++)
{
array2[i] = i;
Console.Write(" " + array2[i]);
}
//两种非托管内存申请方式，对于简单的字节内存，可以使用Marshal.AllocHGlobal，对于创建复杂类的内存，采用类似Demo5.NewArray方式。
//IntPtr buffer = Demo5.NewArray(10);
IntPtr buffer = Marshal.AllocHGlobal(10);
Marshal.Copy(array2, 0, buffer, 10);
int sum2 = Demo5.TestRefArrayOfInts(ref buffer, ref size);
Console.WriteLine("\nInteger array passed ByRef after call:");
Console.WriteLine("\nSum of elements:" + sum2);
if (size > 0)
{
int[] arrayRes = new int[size];
//从非托管拷贝到托管内存。
Marshal.Copy(buffer, arrayRes, 0, size);
foreach (int i in arrayRes)
{
Console.Write(" " + i);
}
}
else
{
Console.WriteLine("\nArray after call is empty");
}
//Demo5.DeleteArray(buffer);
Marshal.FreeHGlobal(buffer);
}
public void Test()
{
int[] array1 = new int[10];
Console.WriteLine("Integer array passed ByVal before call:");
for (int i = 0; i < array1.Length; i++)
{
array1[i] = i;
Console.Write(" " + array1[i]);
}
int count = 10000;
while (count > 0)
{
count--;
int sum1 = Demo5.TestArrayOfInts(array1, array1.Length);
}
Console.WriteLine("\nInteger array passed ByVal after call:");
foreach (int i in array1)
{
Console.Write(" " + i);
}
}
