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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/testsuite/libjava.lang/Thread_Wait_2.java | |
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Diffstat (limited to 'libjava/testsuite/libjava.lang/Thread_Wait_2.java')
-rw-r--r-- | libjava/testsuite/libjava.lang/Thread_Wait_2.java | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/libjava/testsuite/libjava.lang/Thread_Wait_2.java b/libjava/testsuite/libjava.lang/Thread_Wait_2.java new file mode 100644 index 000000000..7ee51726c --- /dev/null +++ b/libjava/testsuite/libjava.lang/Thread_Wait_2.java @@ -0,0 +1,143 @@ +// Create many threads waiting on a monitor. Interrupt some of them. Do the +// others wake up correctly with notify() and/or notifyAll()? + +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."); + } + } + +} |