/// <summary>
/// 开始启动任务
/// </summary>
/// <param name="interval">间隔时间(毫秒)</param>
/// <param name="execMethod">要执行的方法</param>
/// <returns>任务句柄 用于停止任务</returns>
public static Timer Start(int interval, ExecMethod execMethod)
{
int isRunning = 0;
Timer timerItem = new Timer(delegate
{
if (Interlocked.Exchange(ref isRunning, 1) == 0)
{
try
{
execMethod();
}
catch (Exception ex)
{
throw ex;
}
finally
{
Interlocked.Exchange(ref isRunning, 0);
}
}
}, null, interval, interval);
TimerList.Add(timerItem);
return(timerItem);
}
static void Main()
{
Console.Write("Period of seconds = ");
int seconds = int.Parse(Console.ReadLine());
Console.Write("Enter the count of numbers = ");
int number = int.Parse(Console.ReadLine());
ExecMethod exec = new ExecMethod(Counter);
for (int i = 1; i <= number; i++)
{
exec(i);
Thread.Sleep(1000 * seconds);
}
}
static void Main()
{
Console.Write("Period of seconds = ");
int seconds = int.Parse(Console.ReadLine());
Console.Write("Enter the count of numbers = ");
int number = int.Parse(Console.ReadLine());
ExecMethod exec = new ExecMethod(Counter);
for (int i = 1; i <= number; i++)
{
exec(i);
Thread.Sleep(1000 * seconds);
}
}
public Calculator(string exp)
{
this.tree = CSharpSyntaxTree.ParseText(@"using System;
namespace Lab_4
{
class First
{
public double exec(double x, double y)
{
return " + exp + @";
}
}
}
");
var compilation = CSharpCompilation.Create("first",
new[] { tree },
new[] { MetadataReference.CreateFromFile(typeof(object).Assembly.Location) },
new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary));
var stream = new MemoryStream();
EmitResult result = compilation.Emit(stream);
if (!result.Success)
{
foreach (Diagnostic item in result.Diagnostics)
{
Console.Error.WriteLine($"{item.Id}: {item.GetMessage()}");
}
return;
}
stream.Seek(0, SeekOrigin.Begin);
Assembly assembly = Assembly.Load(stream.ToArray());
Type type = assembly.GetType("Lab_4.First");
ConstructorInfo constructorInfo = type.GetConstructors().First();
var instance = constructorInfo.Invoke(null);
MethodInfo method = type.GetMethod("exec");
delegat = (ExecMethod)method.CreateDelegate(typeof(ExecMethod), instance);
}
