C # multithreading synchronization-use the semaphore class

1: UsingSystem;
 

 
2: UsingSystem. Collections. Generic;
 

 
3: UsingSystem. LINQ;
 

 
4: UsingSystem. text;
 

 
5: UsingSystem. Threading;
 

 
6: UsingSystem. diagnostics;
 

 
7:
 

 
8: NamespaceSemaphore
 

 
9:{
 

 
10:ClassProgram
 

 
11:{
 

 
12:Static VoidMain (String[] ARGs)
 

13:{
 

 
14:IntThreadcount = 6;
 

 
15:IntSemaphorecount = 4;
 

 
16:VaR semaphore =NewSemaphoreslim (semaphorecount, semaphorecount );
 

 
17:VaR threads =NewThread [threadcount];
 

18:
 

 
19:For(IntI = 0; I <threadcount; I ++)
 

 
20:{
 

 
21:Threads [I] =NewThread (threadmain );
 

 
22:Threads [I]. Start (semaphore );
 

 
23:}
 

24:
 

 
25:For(IntI = 0; I <threadcount; I ++)
 

 
26:{
 

 
27:Threads [I]. Join ();
 

 
28:}
 

 
29:
 

30:Console. writeline ("All threads finished");
 

 
31:}
 

 
32:
 

 
33:Static VoidThreadmain (ObjectO)
 

 
34:{
 

35:Semaphoreslim semaphore = oAsSemaphoreslim;
 

 
36:Trace. Assert (semaphore! =Null,"O must be a semaphore type");
 

 
37:BoolIscompleted =False;
 

 
38:While(! Iscompleted)
 

 
39:{
 

40:If(Semaphore. Wait (600 ))
 

 
41:{
 

 
42:Try
 

 
43:{
 

 
44:Console. writeline ("Thread {0} locks the semaphore", Thread. currentthread. managedthreadid );
 

45:Thread. Sleep (2000 );
 

 
46:}
 

 
47:Finally
 

 
48:{
 

 
49:Semaphore. Release ();
 

 
50:Console. writeline ("Thread {0} releases the semaphore", Thread. currentthread. managedthreadid );
 

 
51:Iscompleted =True;
 

 
52:}
 

 
53:}
 

 
54:Else
 

 
55:{
 

56:Console. writeline ("Timeout for thread {0}: Wait again", Thread. currentthread. managedthreadid );
 

 
57:}
 

 
58:}
 

 
59:Console. Read ();
 

 
60:}
 

 
61:}
 

 
62:}