Thread_Wait.java: New file.

2000-03-23  Bryce McKinlay  <bryce@albatross.co.nz>

        * libjava.lang/Thread_Wait.java: New file.
        * libjava.lang/Thread_Sleep.java: New file.
        * libjava.lang/Thread_Monitor.java: New file.
        * libjava.lang/Thread_Wait.out: New file.
        * libjava.lang/Thread_Sleep.out: New file.
        * libjava.lang/Thread_Monitor.out: New file.
        * libjava.lang/Thread_Interrupt.java: New file.
        * libjava.lang/Thread_Wait_2.java: New file.
        * libjava.lang/Thread_Wait_2.out: New file.
        * libjava.lang/Thread_Wait_Interrupt.java: New file.
        * libjava.lang/Thread_Wait_Interrupt.out: New file.
        * libjava.lang/Thread_Interrupt.out: New file.
        * libjava.lang/Thread_Join.java: New file.
        * libjava.lang/Thread_Join.out: New file.
        * libjava.lang/Thread_Alive.java: New file.
        * libjava.lang/Thread_Alive.out: New file.

From-SVN: r32706

libjava/testsuite/ChangeLog

@@ -1,3 +1,22 @@
+2000-03-23  Bryce McKinlay  <bryce@albatross.co.nz>
+
+	* libjava.lang/Thread_Wait.java: New file.
+	* libjava.lang/Thread_Sleep.java: New file.
+	* libjava.lang/Thread_Monitor.java: New file.
+	* libjava.lang/Thread_Wait.out: New file.
+	* libjava.lang/Thread_Sleep.out: New file.
+	* libjava.lang/Thread_Monitor.out: New file.
+	* libjava.lang/Thread_Interrupt.java: New file.
+	* libjava.lang/Thread_Wait_2.java: New file.
+	* libjava.lang/Thread_Wait_2.out: New file.
+	* libjava.lang/Thread_Wait_Interrupt.java: New file.
+	* libjava.lang/Thread_Wait_Interrupt.out: New file.
+	* libjava.lang/Thread_Interrupt.out: New file.
+	* libjava.lang/Thread_Join.java: New file.
+	* libjava.lang/Thread_Join.out: New file.
+	* libjava.lang/Thread_Alive.java: New file.
+	* libjava.lang/Thread_Alive.out: New file.
+
 2000-03-22  Tom Tromey  <tromey@cygnus.com>
 
 	* libjava.compile/iface.java: New file.

libjava/testsuite/libjava.lang/Thread_Alive.java

@@ -0,0 +1,47 @@
+// Test the status of the isAlive() flag before, during, and after thread 
+// execution. Check that thread's threadgroup is null after thread exits.
+// Origin: Bryce McKinlay <bryce@albatross.co.nz>
+
+public class Thread_Alive implements Runnable
+{
+  public static void main(String args[]) throws InterruptedException
+  {
+    Thread_Alive ta = new Thread_Alive();
+    Thread t = new Thread(ta);
+    System.out.println(t.isAlive());
+    t.start();
+    System.out.println(t.isAlive());
+
+    Thread.sleep(100);
+    
+    synchronized (ta)
+    {
+      ta.notifyAll();
+    }
+
+    t.join();
+    System.out.println(t.isAlive());
+    
+    try
+    {
+      t.start();
+      System.out.println("Error: dead thread can be restarted.");
+    }
+    catch (IllegalThreadStateException x)
+    {
+      System.out.println ("ok");
+    }
+
+    System.out.println(t.getThreadGroup());
+  }
+  
+  public synchronized void run()
+  {
+    try
+    {
+      wait();
+    }
+    catch (InterruptedException x) {}
+  }
+  
+}

libjava/testsuite/libjava.lang/Thread_Alive.out

@@ -0,0 +1,5 @@
+false
+true
+false
+ok
+null

libjava/testsuite/libjava.lang/Thread_Interrupt.java

@@ -0,0 +1,134 @@
+// Test interrupt() behaviour on a thread in wait(), sleep(), and spinning 
+// in a loop.
+// Origin: Bryce McKinlay <bryce@albatross.co.nz>
+
+class Waiter extends Thread
+{
+  public synchronized void run()
+  {
+    System.out.println ("wait()");
+    try
+    {
+      wait();
+      System.out.println("Error: wait() completed normally.");
+    }
+    catch (InterruptedException x)
+    {
+      if (isInterrupted() || interrupted()) 
+        System.out.println("Error: interrupt flag is still set.");
+    
+    }
+      System.out.println("interrupted - ok");
+  }
+}
+
+class Sleeper extends Thread
+{
+  public void run()
+  {
+    System.out.println ("sleep()");
+    try
+    {
+      sleep(2000);
+      System.out.println("Error: sleep() completed normally.");
+    }
+    catch (InterruptedException x)
+    {
+      if (isInterrupted() || interrupted()) 
+        System.out.println("Error: interrupt flag is still set.");
+    
+      System.out.println("interrupted - ok");
+    }
+  }
+}
+
+class Looper extends Thread
+{
+  public void run()
+  {
+    System.out.println ("Busy waiting");
+
+    int count = 0;
+    for (int i=0; i < 1000000; i++)
+      {
+        Thread.yield();
+	count += 5;
+	if (isInterrupted ())
+	  break;
+      }
+    synchronized (this)
+    {  
+      if (interrupted ())
+	{
+	  System.out.println ("interrupted - ok");
+	  if (isInterrupted () || interrupted ())
+	    System.out.println("Error: interrupt flag is still set.");
+	}
+      else
+	System.out.println ("Error: Busy wait was not interrupted.");          
+    }
+  }
+}
+
+class Joiner extends Thread
+{
+  public void run()
+  {
+    System.out.println("join()");
+    try
+    {
+      join(2000);
+      System.out.println("Error: join() completed normally??!");
+    }
+    catch (InterruptedException x)
+    {
+      if (isInterrupted() || interrupted()) 
+        System.out.println("Error: interrupt flag is still set.");
+    
+      System.out.println("interrupted - ok");
+    }
+
+  }
+}
+
+public class Thread_Interrupt
+{
+  public static void main(String args[])
+  {
+    Waiter w = new Waiter();
+    w.start ();
+    sleep_and_interrupt (w);
+    
+    Sleeper s = new Sleeper();
+    s.start ();
+    sleep_and_interrupt (s);
+
+    Looper l = new Looper ();
+    l.start ();
+    sleep_and_interrupt (l);
+
+    Joiner j = new Joiner ();
+    j.start ();
+    sleep_and_interrupt (j);
+  }
+  
+  public static void sleep_and_interrupt(Thread t)
+  {
+    try
+    {
+      Thread.sleep (250);
+      t.interrupt ();
+      long t1 = System.currentTimeMillis();
+      t.join (5000);
+      long time = System.currentTimeMillis() - t1;
+      if (time > 2900)
+        {
+	  System.out.println ("Error: join() from main thread timed out");
+	}
+    }
+    catch (InterruptedException x)
+    {
+      System.out.println("Error: main thread interrupted.");
+    }
+  }
+}

libjava/testsuite/libjava.lang/Thread_Interrupt.out

@@ -0,0 +1,8 @@
+wait()
+interrupted - ok
+sleep()
+interrupted - ok
+Busy waiting
+interrupted - ok
+join()
+interrupted - ok

libjava/testsuite/libjava.lang/Thread_Join.java

@@ -0,0 +1,68 @@
+// Many threads join a single thread.
+// Origin: Bryce McKinlay <bryce@albatross.co.nz>
+
+class Sleeper implements Runnable
+{
+  int num = -1;
+  
+  public Sleeper(int num)
+  {
+    this.num = num;
+  }
+  
+  public void run()
+  {
+    System.out.println("sleeping");
+    try
+    {
+      Thread.sleep(500);
+    }
+    catch (InterruptedException x)
+    {
+      System.out.println("sleep() interrupted");
+    }
+    System.out.println("done");
+  }
+}
+
+class Joiner implements Runnable
+{
+  Thread join_target;
+  
+  public Joiner(Thread t)
+  {
+    this.join_target = t;
+  }
+  
+  public void run()
+  {
+    try
+    {
+      long start = System.currentTimeMillis();
+      join_target.join(2000);
+      if ((System.currentTimeMillis() - start) > 1900)
+        System.out.println("Error: Join timed out");
+      else
+        System.out.println("ok");
+    }
+    catch (InterruptedException x)
+    {
+      System.out.println("join() interrupted");
+    }
+  }
+  
+}
+
+public class Thread_Join
+{
+  public static void main(String[] args)
+  {
+    Thread primary = new Thread(new Sleeper(1));
+    primary.start();
+    for (int i=0; i < 10; i++)
+    {
+      Thread t = new Thread(new Joiner(primary));
+      t.start();
+    }
+  }
+}

libjava/testsuite/libjava.lang/Thread_Join.out

@@ -0,0 +1,12 @@
+sleeping
+done
+ok
+ok
+ok
+ok
+ok
+ok
+ok
+ok
+ok
+ok

libjava/testsuite/libjava.lang/Thread_Monitor.java

@@ -0,0 +1,65 @@
+// Test that monitor locks work and are recursive.
+// Origin: Bryce McKinlay <bryce@albatross.co.nz>
+
+class T implements Runnable
+{
+  public int count = 0;
+  Counter c;
+  
+  public T (Counter c)
+  {
+    this.c = c;
+  }
+
+  public void run()
+  {
+    while (true)
+      {
+        // NOTE: double-synchronization here.
+	synchronized (c)
+	{
+	  if (c.getCount() <= 100000)
+	    count++;
+	  else
+	    break;
+	}
+      }
+  }
+}
+
+class Counter
+{
+  int i = 0;
+  public synchronized int getCount ()
+  {
+    return ++i; 
+  }
+}
+
+public class Thread_Monitor
+{
+  public static void main(String args[])
+  {
+    Counter c = new Counter();
+    T t1 = new T(c);
+    T t2 = new T(c);
+    
+    Thread th1 = new Thread(t1);
+    Thread th2 = new Thread(t2);
+    th1.start();
+    th2.start();
+    try
+    {
+      th1.join();
+      th2.join();
+    } 
+    catch (InterruptedException x)
+    {
+      System.out.println("failed: Interrupted");
+    }
+    if (t1.count + t2.count == 100000)
+      System.out.println ("ok");
+    else
+      System.out.println ("failed: total count incorrect");
+  }
+}

libjava/testsuite/libjava.lang/Thread_Monitor.out

@@ -0,0 +1 @@
+ok

libjava/testsuite/libjava.lang/Thread_Sleep.java

@@ -0,0 +1,24 @@
+// Test that Thread.sleep() works.
+// Origin: Bryce McKinlay <bryce@albatross.co.nz>
+
+public class Thread_Sleep
+{
+  public static void main(String args[])
+  {
+    try
+    {
+      long start = System.currentTimeMillis();
+      System.out.println("sleeping");
+      Thread.sleep(1000);
+      long end = System.currentTimeMillis();
+      if ((end - start) > 1100 || (end - start) < 990)
+        System.out.println ("failed");
+      else
+	System.out.println("ok");
+    }
+    catch (InterruptedException x)
+    {
+      System.out.println("error: Thread interrupted.");
+    }
+  }
+}

libjava/testsuite/libjava.lang/Thread_Sleep.out

@@ -0,0 +1,2 @@
+sleeping
+ok

libjava/testsuite/libjava.lang/Thread_Wait.java

@@ -0,0 +1,49 @@
+// Test basic thread creation and wait/notify functionality.
+// Origin: Bryce McKinlay <bryce@albatross.co.nz>
+
+public class Thread_Wait implements Runnable
+{
+  public static void main(String args[])
+  {
+    new Thread_Wait();
+  }
+  
+  public Thread_Wait()
+  {
+    System.out.println("creating thread");
+    Thread t = new Thread(this);
+    t.start();
+    
+    try
+    {
+      Thread.sleep(100);
+    }
+    catch (Exception x)
+    {
+      System.out.println("exception occured: " + x);
+    }
+
+    synchronized (this)
+    {
+      System.out.println("notifying other thread");
+      notify();
+    }
+  }
+  
+  public void run()
+  {
+    System.out.println ("new thread running");
+    synchronized (this)
+    {
+      try
+      {
+	wait();
+      }
+      catch (Exception x)
+      {
+        System.out.println("exception occured: " + x);
+      }
+    }    
+    System.out.println ("thread notified okay");
+  }
+}

libjava/testsuite/libjava.lang/Thread_Wait.out

@@ -0,0 +1,4 @@
+creating thread
+new thread running
+notifying other thread
+thread notified okay

libjava/testsuite/libjava.lang/Thread_Wait_2.java

@@ -0,0 +1,144 @@
+// Create many threads waiting on a monitor. Interrupt some of them. Do the 
+// others wake up correctly with notify() and/or notifyAll()?
+// Origin: Bryce McKinlay <bryce@albatross.co.nz>
+
+import java.util.Vector;
+
+class Waiter extends Thread
+{
+  Object monitor;
+  int thread_num;
+  boolean interrupted = false;
+  boolean notified = false;
+
+  Waiter (Object monitor, int thread_num)
+  {
+    this.monitor = monitor;
+    this.thread_num = thread_num;
+  }  
+  
+  public void run()
+  {
+    synchronized (monitor)
+      {
+	try
+	{
+	  monitor.wait();
+	  notified = true;
+	}
+	catch (InterruptedException x)
+	{
+	  interrupted = true;
+	}
+      }
+    
+  }
+}
+
+public class Thread_Wait_2
+{
+  static Vector threads;
+  static Object monitor = new Object();
+  
+  static final int NUM_THREADS = 10;
+  
+  public static void main(String args[])
+  {
+    
+    
+    try
+    {
+      makeThreads ();
+      
+      Thread.sleep(250);
+      
+      // Interrupt a few threads...
+      Waiter i1 = (Waiter) threads.elementAt(3);
+      Waiter i2 = (Waiter) threads.elementAt(4);
+      Waiter i3 = (Waiter) threads.elementAt(9);
+      i1.interrupt();
+      i2.interrupt();
+      i3.interrupt();
+      
+      // Call notify the exact number of times required to wake the remaining
+      // threads.
+      synchronized (monitor)
+      {
+	for (int i=0; i < NUM_THREADS -3 ; i++)
+	{
+	  monitor.notify ();
+	}
+      }
+      
+      joinAll();
+      printStatus();
+      
+      // Repeat all the above, but use notifyAll() instead.
+      makeThreads();
+
+      Thread.sleep(250);
+      
+      // Interrupt a few threads...
+      i1 = (Waiter) threads.elementAt(0);
+      i2 = (Waiter) threads.elementAt(1);
+      i3 = (Waiter) threads.elementAt(9);
+      i1.interrupt();
+      i2.interrupt();
+      i3.interrupt();
+      
+      // Call notifyAll to wake the remaining threads.
+      synchronized (monitor)
+      {
+        monitor.notifyAll ();
+      }
+
+      joinAll();
+      printStatus();
+
+    }
+    catch (InterruptedException x)
+    {
+      System.out.println (x);
+    }
+
+
+  }
+  
+  static void makeThreads()
+  {
+    threads = new Vector(NUM_THREADS);
+    
+    for (int i=0; i < NUM_THREADS; i++)
+      {
+	Waiter w = new Waiter(monitor, i);
+	w.start();
+	threads.addElement(w);
+      }
+  }
+  
+  static void joinAll()
+  {
+    try
+    {
+      for (int i=0; i < threads.size(); i++)
+	{
+          Thread t = (Thread) threads.elementAt(i);
+	  t.join();
+	}
+    }
+    catch (InterruptedException x) {}
+  }
+  
+  static void printStatus()
+  {
+    for (int i=0; i < threads.size(); i++)
+      {
+        Waiter w = (Waiter) threads.elementAt(i);
+	if (w.interrupted)
+	  System.out.println (i + " interrupted.");
+	if (w.notified)
+	  System.out.println (i + " notified.");
+      }
+  }
+  
+}

libjava/testsuite/libjava.lang/Thread_Wait_2.out

@@ -0,0 +1,20 @@
+0 notified.
+1 notified.
+2 notified.
+3 interrupted.
+4 interrupted.
+5 notified.
+6 notified.
+7 notified.
+8 notified.
+9 interrupted.
+0 interrupted.
+1 interrupted.
+2 notified.
+3 notified.
+4 notified.
+5 notified.
+6 notified.
+7 notified.
+8 notified.
+9 interrupted.

libjava/testsuite/libjava.lang/Thread_Wait_Interrupt.java

@@ -0,0 +1,76 @@
+// Create two threads waiting on a monitor. Interrupt one of them. Does the 
+// other wake up correctly?
+// Origin: Bryce McKinlay <bryce@albatross.co.nz>
+
+class Waiter extends Thread
+{
+  Object monitor;
+  int thread_num;
+  boolean interrupted = false;
+  boolean notified = false; 
+
+  Waiter (Object monitor, int thread_num)
+  {
+    this.monitor = monitor;
+    this.thread_num = thread_num;
+  }
+  
+  public void run()
+  {
+    synchronized (monitor)
+      {
+        System.out.println ("Thread waiting.");
+	try
+	{
+	  long start = System.currentTimeMillis();
+	  monitor.wait(1000);
+	  long time = System.currentTimeMillis() - start;
+	  if (time > 990)
+	    System.out.println ("Error: wait on thread " + thread_num 
+	                        + " timed out.");
+	  else
+	    notified = true;
+	}
+	catch (InterruptedException x)
+	{
+	  interrupted = true;
+	}
+      }
+    
+  }
+}
+
+public class Thread_Wait_Interrupt
+{
+  public static void main(String args[])
+  {
+    Object monitor = new Object();
+    Waiter w1 = new Waiter(monitor, 1);
+    Waiter w2 = new Waiter(monitor, 2);
+    w1.start();
+    w2.start();
+    try
+    {
+      Thread.sleep(250);
+
+      synchronized (monitor)
+      {
+	w1.interrupt();
+	monitor.notify();
+      }
+
+      w1.join();
+      w2.join();
+      System.out.println("join ok");
+      System.out.println("Thread 1 " + 
+                         (w1.interrupted ? "interrupted ok" : "error"));
+      System.out.println("Thread 2 " +
+                         (w2.notified ? "notified ok" : "error"));
+
+    }
+    catch (InterruptedException x)
+    {
+      System.out.println (x);
+    }
+  }
+}

libjava/testsuite/libjava.lang/Thread_Wait_Interrupt.out

@@ -0,0 +1,5 @@
+Thread waiting.
+Thread waiting.
+join ok
+Thread 1 interrupted ok
+Thread 2 notified ok