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<div class="subTitle">edu.emory.mathcs.backport.java.util.concurrent</div>
<h2 title="Class AbstractExecutorService" class="title">Class AbstractExecutorService</h2>
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<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li>edu.emory.mathcs.backport.java.util.concurrent.AbstractExecutorService</li>
</ul>
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<dl>
<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Executor.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">Executor</a>, <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">ExecutorService</a></dd>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ThreadPoolExecutor.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">ThreadPoolExecutor</a></dd>
</dl>
<hr>
<br>
<pre>public abstract class <span class="strong">AbstractExecutorService</span>
extends java.lang.Object
implements <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">ExecutorService</a></pre>
<div class="block">Provides default implementations of <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent"><code>ExecutorService</code></a>
execution methods. This class implements the <tt>submit</tt>,
<tt>invokeAny</tt> and <tt>invokeAll</tt> methods using a
<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/RunnableFuture.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent"><code>RunnableFuture</code></a> returned by <tt>newTaskFor</tt>, which defaults
to the <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/FutureTask.html" title="class in edu.emory.mathcs.backport.java.util.concurrent"><code>FutureTask</code></a> class provided in this package. For example,
the implementation of <tt>submit(Runnable)</tt> creates an
associated <tt>RunnableFuture</tt> that is executed and
returned. Subclasses may override the <tt>newTaskFor</tt> methods
to return <tt>RunnableFuture</tt> implementations other than
<tt>FutureTask</tt>.
<p> <b>Extension example</b>. Here is a sketch of a class
that customizes <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ThreadPoolExecutor.html" title="class in edu.emory.mathcs.backport.java.util.concurrent"><code>ThreadPoolExecutor</code></a> to use
a <tt>CustomTask</tt> class instead of the default <tt>FutureTask</tt>:
<pre>
public class CustomThreadPoolExecutor extends ThreadPoolExecutor {
static class CustomTask<V> implements RunnableFuture<V> {...}
protected <V> RunnableFuture<V> newTaskFor(Callable<V> c) {
return new CustomTask<V>(c);
}
protected <V> RunnableFuture<V> newTaskFor(Runnable r, V v) {
return new CustomTask<V>(r, v);
}
// ... add constructors, etc.
}
</pre></div>
<dl><dt><span class="strong">Since:</span></dt>
<dd>1.5</dd>
<dt><span class="strong">Author:</span></dt>
<dd>Doug Lea</dd></dl>
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<caption><span>Constructors</span><span class="tabEnd"> </span></caption>
<tr>
<th class="colOne" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/AbstractExecutorService.html#AbstractExecutorService()">AbstractExecutorService</a></strong>()</code> </td>
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<caption><span>Methods</span><span class="tabEnd"> </span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.util.List</code></td>
<td class="colLast"><code><strong><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/AbstractExecutorService.html#invokeAll(java.util.Collection)">invokeAll</a></strong>(java.util.Collection tasks)</code>
<div class="block">Executes the given tasks, returning a list of Futures holding
their status and results when all complete.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.util.List</code></td>
<td class="colLast"><code><strong><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/AbstractExecutorService.html#invokeAll(java.util.Collection, long, edu.emory.mathcs.backport.java.util.concurrent.TimeUnit)">invokeAll</a></strong>(java.util.Collection tasks,
long timeout,
<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/TimeUnit.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">TimeUnit</a> unit)</code>
<div class="block">Executes the given tasks, returning a list of Futures holding
their status and results
when all complete or the timeout expires, whichever happens first.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<td class="colLast"><code><strong><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/AbstractExecutorService.html#invokeAny(java.util.Collection)">invokeAny</a></strong>(java.util.Collection tasks)</code>
<div class="block">Executes the given tasks, returning the result
of one that has completed successfully (i.e., without throwing
an exception), if any do.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<td class="colLast"><code><strong><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/AbstractExecutorService.html#invokeAny(java.util.Collection, long, edu.emory.mathcs.backport.java.util.concurrent.TimeUnit)">invokeAny</a></strong>(java.util.Collection tasks,
long timeout,
<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/TimeUnit.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">TimeUnit</a> unit)</code>
<div class="block">Executes the given tasks, returning the result
of one that has completed successfully (i.e., without throwing
an exception), if any do before the given timeout elapses.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/RunnableFuture.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">RunnableFuture</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/AbstractExecutorService.html#newTaskFor(edu.emory.mathcs.backport.java.util.concurrent.Callable)">newTaskFor</a></strong>(<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Callable.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">Callable</a> callable)</code>
<div class="block">Returns a <tt>RunnableFuture</tt> for the given callable task.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/RunnableFuture.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">RunnableFuture</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/AbstractExecutorService.html#newTaskFor(java.lang.Runnable, java.lang.Object)">newTaskFor</a></strong>(java.lang.Runnable runnable,
java.lang.Object value)</code>
<div class="block">Returns a <tt>RunnableFuture</tt> for the given runnable and default
value.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Future.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">Future</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/AbstractExecutorService.html#submit(edu.emory.mathcs.backport.java.util.concurrent.Callable)">submit</a></strong>(<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Callable.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">Callable</a> task)</code>
<div class="block">Submits a value-returning task for execution and returns a
Future representing the pending results of the task.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Future.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">Future</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/AbstractExecutorService.html#submit(java.lang.Runnable)">submit</a></strong>(java.lang.Runnable task)</code>
<div class="block">Submits a Runnable task for execution and returns a Future
representing that task.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Future.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">Future</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/AbstractExecutorService.html#submit(java.lang.Runnable, java.lang.Object)">submit</a></strong>(java.lang.Runnable task,
java.lang.Object result)</code>
<div class="block">Submits a Runnable task for execution and returns a Future
representing that task.</div>
</td>
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<h3>Methods inherited from class java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h3>Methods inherited from interface edu.emory.mathcs.backport.java.util.concurrent.<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">ExecutorService</a></h3>
<code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#awaitTermination(long, edu.emory.mathcs.backport.java.util.concurrent.TimeUnit)">awaitTermination</a>, <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#isShutdown()">isShutdown</a>, <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#isTerminated()">isTerminated</a>, <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#shutdown()">shutdown</a>, <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#shutdownNow()">shutdownNow</a></code></li>
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<h3>Methods inherited from interface edu.emory.mathcs.backport.java.util.concurrent.<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Executor.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">Executor</a></h3>
<code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Executor.html#execute(java.lang.Runnable)">execute</a></code></li>
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<a name="AbstractExecutorService()">
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<h4>AbstractExecutorService</h4>
<pre>public AbstractExecutorService()</pre>
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<a name="newTaskFor(java.lang.Runnable, java.lang.Object)">
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<h4>newTaskFor</h4>
<pre>protected <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/RunnableFuture.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">RunnableFuture</a> newTaskFor(java.lang.Runnable runnable,
java.lang.Object value)</pre>
<div class="block">Returns a <tt>RunnableFuture</tt> for the given runnable and default
value.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>runnable</code> - the runnable task being wrapped</dd><dd><code>value</code> - the default value for the returned future</dd>
<dt><span class="strong">Returns:</span></dt><dd>a <tt>RunnableFuture</tt> which when run will run the
underlying runnable and which, as a <tt>Future</tt>, will yield
the given value as its result and provide for cancellation of
the underlying task.</dd><dt><span class="strong">Since:</span></dt>
<dd>1.6</dd></dl>
</li>
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<a name="newTaskFor(edu.emory.mathcs.backport.java.util.concurrent.Callable)">
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<pre>protected <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/RunnableFuture.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">RunnableFuture</a> newTaskFor(<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Callable.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">Callable</a> callable)</pre>
<div class="block">Returns a <tt>RunnableFuture</tt> for the given callable task.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>callable</code> - the callable task being wrapped</dd>
<dt><span class="strong">Returns:</span></dt><dd>a <tt>RunnableFuture</tt> which when run will call the
underlying callable and which, as a <tt>Future</tt>, will yield
the callable's result as its result and provide for
cancellation of the underlying task.</dd><dt><span class="strong">Since:</span></dt>
<dd>1.6</dd></dl>
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<h4>submit</h4>
<pre>public <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Future.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">Future</a> submit(java.lang.Runnable task)</pre>
<div class="block"><strong>Description copied from interface: <code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#submit(java.lang.Runnable)">ExecutorService</a></code></strong></div>
<div class="block">Submits a Runnable task for execution and returns a Future
representing that task. The Future's <tt>get</tt> method will
return <tt>null</tt> upon <em>successful</em> completion.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#submit(java.lang.Runnable)">submit</a></code> in interface <code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">ExecutorService</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>task</code> - the task to submit</dd>
<dt><span class="strong">Returns:</span></dt><dd>a Future representing pending completion of the task</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/RejectedExecutionException.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">RejectedExecutionException</a></code> - if the task cannot be
scheduled for execution</dd>
<dd><code>java.lang.NullPointerException</code> - if the task is null</dd></dl>
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<pre>public <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Future.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">Future</a> submit(java.lang.Runnable task,
java.lang.Object result)</pre>
<div class="block"><strong>Description copied from interface: <code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#submit(java.lang.Runnable, java.lang.Object)">ExecutorService</a></code></strong></div>
<div class="block">Submits a Runnable task for execution and returns a Future
representing that task. The Future's <tt>get</tt> method will
return the given result upon successful completion.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#submit(java.lang.Runnable, java.lang.Object)">submit</a></code> in interface <code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">ExecutorService</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>task</code> - the task to submit</dd><dd><code>result</code> - the result to return</dd>
<dt><span class="strong">Returns:</span></dt><dd>a Future representing pending completion of the task</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/RejectedExecutionException.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">RejectedExecutionException</a></code> - if the task cannot be
scheduled for execution</dd>
<dd><code>java.lang.NullPointerException</code> - if the task is null</dd></dl>
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<h4>submit</h4>
<pre>public <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Future.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">Future</a> submit(<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Callable.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">Callable</a> task)</pre>
<div class="block"><strong>Description copied from interface: <code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#submit(edu.emory.mathcs.backport.java.util.concurrent.Callable)">ExecutorService</a></code></strong></div>
<div class="block">Submits a value-returning task for execution and returns a
Future representing the pending results of the task. The
Future's <tt>get</tt> method will return the task's result upon
successful completion.
<p>
If you would like to immediately block waiting
for a task, you can use constructions of the form
<tt>result = exec.submit(aCallable).get();</tt>
<p> Note: The <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Executors.html" title="class in edu.emory.mathcs.backport.java.util.concurrent"><code>Executors</code></a> class includes a set of methods
that can convert some other common closure-like objects,
for example, <code>PrivilegedAction</code> to
<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Callable.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent"><code>Callable</code></a> form so they can be submitted.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#submit(edu.emory.mathcs.backport.java.util.concurrent.Callable)">submit</a></code> in interface <code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">ExecutorService</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>task</code> - the task to submit</dd>
<dt><span class="strong">Returns:</span></dt><dd>a Future representing pending completion of the task</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/RejectedExecutionException.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">RejectedExecutionException</a></code> - if the task cannot be
scheduled for execution</dd>
<dd><code>java.lang.NullPointerException</code> - if the task is null</dd></dl>
</li>
</ul>
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<h4>invokeAny</h4>
<pre>public java.lang.Object invokeAny(java.util.Collection tasks)
throws java.lang.InterruptedException,
<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutionException.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">ExecutionException</a></pre>
<div class="block"><strong>Description copied from interface: <code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#invokeAny(java.util.Collection)">ExecutorService</a></code></strong></div>
<div class="block">Executes the given tasks, returning the result
of one that has completed successfully (i.e., without throwing
an exception), if any do. Upon normal or exceptional return,
tasks that have not completed are cancelled.
The results of this method are undefined if the given
collection is modified while this operation is in progress.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#invokeAny(java.util.Collection)">invokeAny</a></code> in interface <code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">ExecutorService</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>tasks</code> - the collection of tasks</dd>
<dt><span class="strong">Returns:</span></dt><dd>the result returned by one of the tasks</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.InterruptedException</code> - if interrupted while waiting</dd>
<dd><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutionException.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">ExecutionException</a></code> - if no task successfully completes</dd></dl>
</li>
</ul>
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<h4>invokeAny</h4>
<pre>public java.lang.Object invokeAny(java.util.Collection tasks,
long timeout,
<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/TimeUnit.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">TimeUnit</a> unit)
throws java.lang.InterruptedException,
<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutionException.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">ExecutionException</a>,
<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/TimeoutException.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">TimeoutException</a></pre>
<div class="block"><strong>Description copied from interface: <code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#invokeAny(java.util.Collection, long, edu.emory.mathcs.backport.java.util.concurrent.TimeUnit)">ExecutorService</a></code></strong></div>
<div class="block">Executes the given tasks, returning the result
of one that has completed successfully (i.e., without throwing
an exception), if any do before the given timeout elapses.
Upon normal or exceptional return, tasks that have not
completed are cancelled.
The results of this method are undefined if the given
collection is modified while this operation is in progress.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#invokeAny(java.util.Collection, long, edu.emory.mathcs.backport.java.util.concurrent.TimeUnit)">invokeAny</a></code> in interface <code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">ExecutorService</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>tasks</code> - the collection of tasks</dd><dd><code>timeout</code> - the maximum time to wait</dd><dd><code>unit</code> - the time unit of the timeout argument</dd>
<dt><span class="strong">Returns:</span></dt><dd>the result returned by one of the tasks.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.InterruptedException</code> - if interrupted while waiting</dd>
<dd><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutionException.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">ExecutionException</a></code> - if no task successfully completes</dd>
<dd><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/TimeoutException.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">TimeoutException</a></code> - if the given timeout elapses before
any task successfully completes</dd></dl>
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<h4>invokeAll</h4>
<pre>public java.util.List invokeAll(java.util.Collection tasks)
throws java.lang.InterruptedException</pre>
<div class="block"><strong>Description copied from interface: <code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#invokeAll(java.util.Collection)">ExecutorService</a></code></strong></div>
<div class="block">Executes the given tasks, returning a list of Futures holding
their status and results when all complete.
<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Future.html#isDone()"><code>Future.isDone()</code></a> is <tt>true</tt> for each
element of the returned list.
Note that a <em>completed</em> task could have
terminated either normally or by throwing an exception.
The results of this method are undefined if the given
collection is modified while this operation is in progress.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#invokeAll(java.util.Collection)">invokeAll</a></code> in interface <code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">ExecutorService</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>tasks</code> - the collection of tasks</dd>
<dt><span class="strong">Returns:</span></dt><dd>A list of Futures representing the tasks, in the same
sequential order as produced by the iterator for the
given task list, each of which has completed.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.InterruptedException</code> - if interrupted while waiting, in
which case unfinished tasks are cancelled.</dd></dl>
</li>
</ul>
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<h4>invokeAll</h4>
<pre>public java.util.List invokeAll(java.util.Collection tasks,
long timeout,
<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/TimeUnit.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">TimeUnit</a> unit)
throws java.lang.InterruptedException</pre>
<div class="block"><strong>Description copied from interface: <code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#invokeAll(java.util.Collection, long, edu.emory.mathcs.backport.java.util.concurrent.TimeUnit)">ExecutorService</a></code></strong></div>
<div class="block">Executes the given tasks, returning a list of Futures holding
their status and results
when all complete or the timeout expires, whichever happens first.
<a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Future.html#isDone()"><code>Future.isDone()</code></a> is <tt>true</tt> for each
element of the returned list.
Upon return, tasks that have not completed are cancelled.
Note that a <em>completed</em> task could have
terminated either normally or by throwing an exception.
The results of this method are undefined if the given
collection is modified while this operation is in progress.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html#invokeAll(java.util.Collection, long, edu.emory.mathcs.backport.java.util.concurrent.TimeUnit)">invokeAll</a></code> in interface <code><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">ExecutorService</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>tasks</code> - the collection of tasks</dd><dd><code>timeout</code> - the maximum time to wait</dd><dd><code>unit</code> - the time unit of the timeout argument</dd>
<dt><span class="strong">Returns:</span></dt><dd>a list of Futures representing the tasks, in the same
sequential order as produced by the iterator for the
given task list. If the operation did not time out,
each task will have completed. If it did time out, some
of these tasks will not have completed.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.InterruptedException</code> - if interrupted while waiting, in
which case unfinished tasks are cancelled</dd></dl>
</li>
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