C#--线程本地化存储

1 /*
2 Example14_4.cs illustrates the use of thread-local storage
3 */
4
5 using System;
6 using System.Threading;
7
8 class Example14_4
9 {
10
11 // the WriteError method writes error info from the current thread
12 public static void WriteError()
13 {
14 Console.WriteLine( " Error number = " + Thread.GetData(Thread.GetNamedDataSlot( " ErrNo " )));
15 Console.WriteLine( " Error source = " + Thread.GetData(Thread.GetNamedDataSlot( " ErrSource " )));
16 }
17
18 // the SetError method sets a random error number
19 public static void SetError()
20 {
21 Random r = new Random();
22 Thread.SetData(Thread.GetNamedDataSlot( " ErrNo " ), r.Next( 100 ));
23 Thread.SetData(Thread.GetNamedDataSlot( " ErrSource " ) ,Thread.CurrentThread.Name);
24 WriteError();
25 }
26
27 public static void Main()
28 {
29 // allocate some named data slots
30 Thread.AllocateNamedDataSlot( " ErrNo " );
31 Thread.AllocateNamedDataSlot( " ErrSource " );
32
33 // create and start a second thread
34 Thread t2 = new Thread( new ThreadStart(SetError));
35 t2.Name = " t2 " ;
36 t2.Start();
37
38 // create a third thread
39 Thread t3 = new Thread( new ThreadStart(SetError));
40 t3.Name = " t3 " ;
41 t3.Start();
42
43 // clean up the data slots
44 Thread.FreeNamedDataSlot( " ErrNo " );
45 Thread.FreeNamedDataSlot( " ErrSource " );
46
47 }
48
49 }