diff options
Diffstat (limited to 'java/JACE/tests/Concurrency/Condition')
5 files changed, 0 insertions, 323 deletions
diff --git a/java/JACE/tests/Concurrency/Condition/Consumer.java b/java/JACE/tests/Concurrency/Condition/Consumer.java deleted file mode 100644 index e43a28f00e0..00000000000 --- a/java/JACE/tests/Concurrency/Condition/Consumer.java +++ /dev/null @@ -1,75 +0,0 @@ -//File: Consumer.java -//Seth Widoff 8/8/96 -//This class attempts at random intervals to dequeue random elements -//from a queue. If the queue is empty the thread waits until an element -//has been enqueued and another thread has invoked the notify() method. -package JACE.tests.Concurrency.Condition; - -import java.lang.Math; -import JACE.ASX.TimeValue; -import java.util.Random; - -public class Consumer implements Runnable -{ - //Maximum pause between dequeues (in milliseconds) - private static final int MAX_PAUSE = 1000; - - private SimpleMessageQueue queue_; - private boolean stop_requested_ = false; - private String name_; - private int iterations_; - private TimeValue timeout_; - - public Consumer(String name, - SimpleMessageQueue queue, - int iterations, - TimeValue timeout) - { - name_ = "Consumer " + name; - queue_ = queue; - iterations_ = iterations; - timeout_ = timeout; - } - - public void run() - { - //Set the random number generator seed to the current time in - //milliseconds. - - Random random = new Random(System.currentTimeMillis()); - Integer element; - - for (int i = 0; i < iterations_; ) - { - try - { - TimeValue absTv = TimeValue.relativeTimeOfDay (timeout_); - element = (Integer)queue_.dequeue(absTv); - if (element != null) - { - - System.out.println("Consumer::run() " + name_ + " dequeued " - + element.toString() + - " Queue size: " + queue_.size()); - - Thread.sleep(Math.abs (random.nextLong()) % MAX_PAUSE); - } - else - { - System.out.println ("Null"); - } - i++; - } - catch(Exception excp) - { - System.out.print ("Consumer::run() Exception: "); - System.out.println(excp); - } - } - } - - public void requestStop() - { - stop_requested_ = true; - } -} diff --git a/java/JACE/tests/Concurrency/Condition/JoinableThreadGroup.java b/java/JACE/tests/Concurrency/Condition/JoinableThreadGroup.java deleted file mode 100644 index 908da33f9f9..00000000000 --- a/java/JACE/tests/Concurrency/Condition/JoinableThreadGroup.java +++ /dev/null @@ -1,24 +0,0 @@ -package JACE.tests.Concurrency.Condition; - -public class JoinableThreadGroup extends ThreadGroup -{ - public JoinableThreadGroup(String name) - { - super(name); - } - - public JoinableThreadGroup(ThreadGroup parent, String name) - { - super(parent, name); - } - - public void join() throws InterruptedException - { - Thread list[] = new Thread[activeCount()]; - - enumerate(list, true); - - for (int i = 0; i < list.length; i++) - list[i].join(); - } -} diff --git a/java/JACE/tests/Concurrency/Condition/Producer.java b/java/JACE/tests/Concurrency/Condition/Producer.java deleted file mode 100644 index cda5063ceed..00000000000 --- a/java/JACE/tests/Concurrency/Condition/Producer.java +++ /dev/null @@ -1,70 +0,0 @@ -//File: Producer.java -//Seth Widoff 8/8/96 -//This class attempts at random intervals to enqueue random elements -//into a queue. If the queue is full the thread waits until an element -//has been dequeued and another thread has invoked the notify() method. - -package JACE.tests.Concurrency.Condition; - -import JACE.ASX.TimeValue; -import java.lang.Math; -import java.util.Random; - -public class Producer implements Runnable -{ - //Maximum pause between enqueues (in milliseconds) - private static final int MAX_PAUSE = 1000; - - private SimpleMessageQueue queue_; - private boolean stop_requested_ = false; - private String name_; - private int iterations_; - private TimeValue timeout_; - - public Producer(String name, - SimpleMessageQueue queue, - int iterations, - TimeValue timeout) - { - name_ = "Producer " + name; - queue_ = queue; - iterations_ = iterations; - timeout_ = timeout; - } - - public void run() - { - //Set the random number generator seed to the current time in milliseconds. - Random random = new Random(System.currentTimeMillis()); - int element = 1; - - for (int i = 0; i < iterations_; ) - { - try - { - // element = random.nextInt(); - TimeValue absTv = TimeValue.relativeTimeOfDay (timeout_); - queue_.enqueue((Object)new Integer(element), absTv); - - System.out.println("Producer::run() " + name_ - + " enqueued " + element + - " Queue size: " + queue_.size()); - - Thread.sleep(Math.abs (random.nextLong()) % MAX_PAUSE); - i++; - element++; - } - catch(Exception excp) - { - System.out.print("Producer::run() Exception: "); - System.out.println(excp); - } - } - } - - public void requestStop() - { - stop_requested_ = true; - } -} - diff --git a/java/JACE/tests/Concurrency/Condition/QueueTest.java b/java/JACE/tests/Concurrency/Condition/QueueTest.java deleted file mode 100644 index 7d6560b11a7..00000000000 --- a/java/JACE/tests/Concurrency/Condition/QueueTest.java +++ /dev/null @@ -1,68 +0,0 @@ -//File: QueueTest.java -//Seth Widoff, 8/8/96 -//This class is a test method for the Producer and Consumer classes. -//The main method takes as arguments the number of producers, the -//number of consumers and the number of elements in the queue. It then -//spawn the specified threads and starts them. - -package JACE.tests.Concurrency.Condition; - -import JACE.ASX.TimeValue; - -public class QueueTest -{ - public static void main(String[] args) - { - if (args.length < 5) - { - System.out.println("Usage: java QueueTest <# producers> <# consumers> " + - "<# elements> <#iterations> <#timeout secs> <#timeout nano secs>"); - System.exit(1); - } - - int num_producers = Integer.parseInt(args[0]), - num_consumers = Integer.parseInt(args[1]), - num_elements = Integer.parseInt(args[2]), - num_iterations = Integer.parseInt(args[3]), - num_timeout_secs = Integer.parseInt(args[4]), - num_timeout_nano_secs = Integer.parseInt(args[5]); - - if (num_elements < 1 - || num_consumers < 1 - || num_producers < 1) - { - System.out.println("All the parameters must be larger than zero."); - System.exit(1); - } - - SimpleMessageQueue queue = new SimpleMessageQueue(num_elements); - Consumer[] consumers = new Consumer[num_consumers]; - Producer[] producers = new Producer[num_producers]; - JoinableThreadGroup thread_group = new JoinableThreadGroup("Producer Consumer"); - - for (int i = 0; i < num_producers; i++) - { - producers[i] = new Producer("Number " + (i + 1), - queue, - num_iterations, - new TimeValue (num_timeout_secs, num_timeout_nano_secs)); - new Thread(thread_group, producers[i]).start(); - } - - for (int i = 0; i < num_consumers; i++) - { - consumers[i] = new Consumer("Number " + (i + 1), queue, num_iterations, new TimeValue (num_timeout_secs, num_timeout_nano_secs)); - new Thread(thread_group, consumers[i]).start(); - } - - try - { - thread_group.join(); - } - catch(InterruptedException excp) - { - System.out.println("QueueTest::main"); - System.out.println(excp); - } - } -} diff --git a/java/JACE/tests/Concurrency/Condition/SimpleMessageQueue.java b/java/JACE/tests/Concurrency/Condition/SimpleMessageQueue.java deleted file mode 100644 index f2a465a9025..00000000000 --- a/java/JACE/tests/Concurrency/Condition/SimpleMessageQueue.java +++ /dev/null @@ -1,86 +0,0 @@ -package JACE.tests.Concurrency.Condition; - -import JACE.ASX.TimeoutException; -import JACE.ASX.TimeValue; -import JACE.Concurrency.*; - -public class SimpleMessageQueue -{ - private int num_items_ = 0; - private int head_ = 0, tail_ = 0; - private Object[] queue_; - - private Mutex lock_ = new Mutex (); - private Condition notFull_ = new Condition (lock_); - private Condition notEmpty_ = new Condition (lock_); - - public SimpleMessageQueue(int size) - { - queue_ = new Object[size]; - } - - public void enqueue(Object element, TimeValue timeout) - throws TimeoutException, InterruptedException - { - try - { - lock_.acquire (); - while (this.isFull ()) - notFull_.Wait (timeout); - - if (tail_ == queue_.length) - tail_ = 0; - queue_[tail_] = element; - tail_++; - - num_items_++; - notEmpty_.signal (); - } - finally - { - lock_.release (); - } - } - - public Object dequeue (TimeValue timeout) - throws TimeoutException, InterruptedException - { - Object return_value = null; - - try - { - lock_.acquire (); - while (this.isEmpty ()) - notEmpty_.Wait (timeout); - - return_value = queue_[head_]; - head_++; - if (head_ == queue_.length) - head_ = 0; - - num_items_--; - notFull_.signal (); - } - finally - { - lock_.release (); - } - return return_value; - } - - public boolean isEmpty() - { - return num_items_ == 0; - } - - public boolean isFull() - { - return num_items_ == queue_.length; - } - - public int size() - { - return num_items_; - } -} - |