Csharp/CSharp Tutorial/Thread/Thread Join — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
(нет различий)
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Текущая версия на 15:20, 26 мая 2010
Содержание
Block until a thread finishes, or timeout after 2 seconds
<source lang="csharp">using System; using System.Threading; class MainClass {
private static void DoCount() { for (int i = 0; i < 5; i++) { Console.WriteLine("{0} : DoCount thread",DateTime.Now.ToString("HH:mm:ss.ffff")); // Sleep for 1 second. Thread.Sleep(1000); } } public static void Main() { Thread thread = new Thread(DoCount); Console.WriteLine("{0} : Starting DoCount thread.",DateTime.Now.ToString("HH:mm:ss.ffff")); thread.Start(); if (!thread.Join(2000)) { Console.WriteLine("{0} : Join timed out !!", DateTime.Now.ToString("HH:mm:ss.ffff")); } // Block again until the DoCount thread finishes with no timeout. thread.Join(); }
}</source>
14:49:28.6093 : Starting DoCount thread. 14:49:28.6250 : DoCount thread 14:49:29.6250 : DoCount thread 14:49:30.6250 : Join timed out !! 14:49:30.6250 : DoCount thread 14:49:31.6250 : DoCount thread 14:49:32.6250 : DoCount thread
Thread joins
<source lang="csharp">using System; using System.Threading; class MainClass {
private static int ThreadCount = 5; public static void DoCount() { for ( int i = 0; i < 3; i++ ) { System.Console.WriteLine( "{0} reached {1}", Thread.CurrentThread.Name, i ); } } [STAThread] static void Main(string[] args) { Thread[] t = new Thread[ ThreadCount ]; for( int k = 0; k < ThreadCount; k++ ) { t[ k ] = new Thread( new ThreadStart( DoCount ) ); t[ k ].Name = "Thread " + k; t[ k ].Start(); } // wait for all the Threads to finish for( int k = 0; k < ThreadCount; k++ ) { t[ k ].Join(); } }
}</source>
Thread 0 reached 0 Thread 0 reached 1 Thread 0 reached 2 Thread 1 reached 0 Thread 1 reached 1 Thread 1 reached 2 Thread 2 reached 0 Thread 2 reached 1 Thread 2 reached 2 Thread 3 reached 0 Thread 3 reached 1 Thread 3 reached 2 Thread 4 reached 0 Thread 4 reached 1 Thread 4 reached 2
Threads Joining
<source lang="csharp">using System; using System.Threading; class Util {
public void DoSleep() { Console.WriteLine("Sleepping {0} seconds", 5); Thread.Sleep(5 * 1000); } public static Thread Sleep() { Util ts = new Util(); Thread thread = new Thread(new ThreadStart(ts.DoSleep)); thread.Start(); return(thread); }
} class MainClass {
public static void Main() { Thread thread = Util.Sleep(); Console.WriteLine("Waiting for thread to join"); thread.Join(); Console.WriteLine("Thread Joined"); }
}</source>
Sleepping 5 seconds Waiting for thread to join Thread Joined
Use Join() to wait for threads to end
<source lang="csharp">using System; using System.Threading;
class MyThread {
public int count; public Thread thrd; public MyThread(string name) { count = 0; thrd = new Thread(this.run); thrd.Name = name; thrd.Start(); } void run() { Console.WriteLine(thrd.Name + " starting."); do { Thread.Sleep(500); Console.WriteLine("In " + thrd.Name + ", count is " + count); count++; } while(count < 10); Console.WriteLine(thrd.Name + " terminating."); }
}
class MainClass {
public static void Main() { Console.WriteLine("Main thread starting."); MyThread mt1 = new MyThread("Child #1"); MyThread mt2 = new MyThread("Child #2"); MyThread mt3 = new MyThread("Child #3"); mt1.thrd.Join(); Console.WriteLine("Child #1 joined."); mt2.thrd.Join(); Console.WriteLine("Child #2 joined."); mt3.thrd.Join(); Console.WriteLine("Child #3 joined."); Console.WriteLine("Main thread ending."); }
}</source>
Main thread starting. Child #1 starting. Child #2 starting. Child #3 starting. In Child #1, count is 0 In Child #2, count is 0 In Child #3, count is 0 In Child #1, count is 1 In Child #2, count is 1 In Child #3, count is 1 In Child #1, count is 2 In Child #2, count is 2 In Child #3, count is 2 In Child #1, count is 3 In Child #2, count is 3 In Child #3, count is 3 In Child #1, count is 4 In Child #2, count is 4 In Child #3, count is 4 In Child #1, count is 5 In Child #2, count is 5 In Child #3, count is 5 In Child #1, count is 6 In Child #2, count is 6 In Child #3, count is 6 In Child #1, count is 7 In Child #2, count is 7 In Child #3, count is 7 In Child #1, count is 8 In Child #2, count is 8 In Child #3, count is 8 In Child #1, count is 9 Child #1 terminating. In Child #2, count is 9 Child #2 terminating. In Child #3, count is 9 Child #3 terminating. Child #1 joined. Child #2 joined. Child #3 joined. Main thread ending.