/usr/share/doc/libbackport-util-concurrent-java/api/edu/emory/mathcs/backport/java/util/concurrent/Executor.html is in libbackport-util-concurrent-java-doc 3.1-3build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<!-- NewPage -->
<html lang="en">
<head>
<!-- Generated by javadoc (version 1.7.0_03) on Fri May 18 11:21:07 UTC 2012 -->
<title>Executor</title>
<meta name="date" content="2012-05-18">
<link rel="stylesheet" type="text/css" href="../../../../../../../stylesheet.css" title="Style">
</head>
<body>
<script type="text/javascript"><!--
if (location.href.indexOf('is-external=true') == -1) {
parent.document.title="Executor";
}
//-->
</script>
<noscript>
<div>JavaScript is disabled on your browser.</div>
</noscript>
<!-- ========= START OF TOP NAVBAR ======= -->
<div class="topNav"><a name="navbar_top">
<!-- -->
</a><a href="#skip-navbar_top" title="Skip navigation links"></a><a name="navbar_top_firstrow">
<!-- -->
</a>
<ul class="navList" title="Navigation">
<li><a href="../../../../../../../overview-summary.html">Overview</a></li>
<li><a href="package-summary.html">Package</a></li>
<li class="navBarCell1Rev">Class</li>
<li><a href="package-tree.html">Tree</a></li>
<li><a href="../../../../../../../deprecated-list.html">Deprecated</a></li>
<li><a href="../../../../../../../index-all.html">Index</a></li>
<li><a href="../../../../../../../help-doc.html">Help</a></li>
</ul>
</div>
<div class="subNav">
<ul class="navList">
<li><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutionException.html" title="class in edu.emory.mathcs.backport.java.util.concurrent"><span class="strong">Prev Class</span></a></li>
<li><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorCompletionService.html" title="class in edu.emory.mathcs.backport.java.util.concurrent"><span class="strong">Next Class</span></a></li>
</ul>
<ul class="navList">
<li><a href="../../../../../../../index.html?edu/emory/mathcs/backport/java/util/concurrent/Executor.html" target="_top">Frames</a></li>
<li><a href="Executor.html" target="_top">No Frames</a></li>
</ul>
<ul class="navList" id="allclasses_navbar_top">
<li><a href="../../../../../../../allclasses-noframe.html">All Classes</a></li>
</ul>
<div>
<script type="text/javascript"><!--
allClassesLink = document.getElementById("allclasses_navbar_top");
if(window==top) {
allClassesLink.style.display = "block";
}
else {
allClassesLink.style.display = "none";
}
//-->
</script>
</div>
<div>
<ul class="subNavList">
<li>Summary: </li>
<li>Nested | </li>
<li>Field | </li>
<li>Constr | </li>
<li><a href="#method_summary">Method</a></li>
</ul>
<ul class="subNavList">
<li>Detail: </li>
<li>Field | </li>
<li>Constr | </li>
<li><a href="#method_detail">Method</a></li>
</ul>
</div>
<a name="skip-navbar_top">
<!-- -->
</a></div>
<!-- ========= END OF TOP NAVBAR ========= -->
<!-- ======== START OF CLASS DATA ======== -->
<div class="header">
<div class="subTitle">edu.emory.mathcs.backport.java.util.concurrent</div>
<h2 title="Interface Executor" class="title">Interface Executor</h2>
</div>
<div class="contentContainer">
<div class="description">
<ul class="blockList">
<li class="blockList">
<dl>
<dt>All Known Subinterfaces:</dt>
<dd><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorService.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">ExecutorService</a>, <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ScheduledExecutorService.html" title="interface in edu.emory.mathcs.backport.java.util.concurrent">ScheduledExecutorService</a></dd>
</dl>
<dl>
<dt>All Known Implementing Classes:</dt>
<dd><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/AbstractExecutorService.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">AbstractExecutorService</a>, <a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ScheduledThreadPoolExecutor.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">ScheduledThreadPoolExecutor</a>, <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 interface <span class="strong">Executor</span></pre>
<div class="block">An object that executes submitted <code>Runnable</code> tasks. This
interface provides a way of decoupling task submission from the
mechanics of how each task will be run, including details of thread
use, scheduling, etc. An <tt>Executor</tt> is normally used
instead of explicitly creating threads. For example, rather than
invoking <tt>new Thread(new(RunnableTask())).start()</tt> for each
of a set of tasks, you might use:
<pre>
Executor executor = <em>anExecutor</em>;
executor.execute(new RunnableTask1());
executor.execute(new RunnableTask2());
...
</pre>
However, the <tt>Executor</tt> interface does not strictly
require that execution be asynchronous. In the simplest case, an
executor can run the submitted task immediately in the caller's
thread:
<pre>
class DirectExecutor implements Executor {
public void execute(Runnable r) {
r.run();
}
}</pre>
More typically, tasks are executed in some thread other
than the caller's thread. The executor below spawns a new thread
for each task.
<pre>
class ThreadPerTaskExecutor implements Executor {
public void execute(Runnable r) {
new Thread(r).start();
}
}</pre>
Many <tt>Executor</tt> implementations impose some sort of
limitation on how and when tasks are scheduled. The executor below
serializes the submission of tasks to a second executor,
illustrating a composite executor.
<pre>
class SerialExecutor implements Executor {
final Queue<Runnable> tasks = new ArrayDeque<Runnable>();
final Executor executor;
Runnable active;
SerialExecutor(Executor executor) {
this.executor = executor;
}
public synchronized void execute(final Runnable r) {
tasks.offer(new Runnable() {
public void run() {
try {
r.run();
} finally {
scheduleNext();
}
}
});
if (active == null) {
scheduleNext();
}
}
protected synchronized void scheduleNext() {
if ((active = tasks.poll()) != null) {
executor.execute(active);
}
}
}</pre>
The <tt>Executor</tt> implementations provided in this package
implement <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>, which is a more extensive
interface. The <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> class provides an
extensible thread pool implementation. 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
provides convenient factory methods for these Executors.
<p>Memory consistency effects: Actions in a thread prior to
submitting a <code>Runnable</code> object to an <code>Executor</code>
<a href="package-summary.html#MemoryVisibility"><i>happen-before</i></a>
its execution begins, perhaps in another thread.</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>
</li>
</ul>
</div>
<div class="summary">
<ul class="blockList">
<li class="blockList">
<!-- ========== METHOD SUMMARY =========== -->
<ul class="blockList">
<li class="blockList"><a name="method_summary">
<!-- -->
</a>
<h3>Method Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<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>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/Executor.html#execute(java.lang.Runnable)">execute</a></strong>(java.lang.Runnable command)</code>
<div class="block">Executes the given command at some time in the future.</div>
</td>
</tr>
</table>
</li>
</ul>
</li>
</ul>
</div>
<div class="details">
<ul class="blockList">
<li class="blockList">
<!-- ============ METHOD DETAIL ========== -->
<ul class="blockList">
<li class="blockList"><a name="method_detail">
<!-- -->
</a>
<h3>Method Detail</h3>
<a name="execute(java.lang.Runnable)">
<!-- -->
</a>
<ul class="blockListLast">
<li class="blockList">
<h4>execute</h4>
<pre>void execute(java.lang.Runnable command)</pre>
<div class="block">Executes the given command at some time in the future. The command
may execute in a new thread, in a pooled thread, or in the calling
thread, at the discretion of the <tt>Executor</tt> implementation.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>command</code> - the runnable 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 this task cannot be
accepted for execution.</dd>
<dd><code>java.lang.NullPointerException</code> - if command is null</dd></dl>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
</div>
<!-- ========= END OF CLASS DATA ========= -->
<!-- ======= START OF BOTTOM NAVBAR ====== -->
<div class="bottomNav"><a name="navbar_bottom">
<!-- -->
</a><a href="#skip-navbar_bottom" title="Skip navigation links"></a><a name="navbar_bottom_firstrow">
<!-- -->
</a>
<ul class="navList" title="Navigation">
<li><a href="../../../../../../../overview-summary.html">Overview</a></li>
<li><a href="package-summary.html">Package</a></li>
<li class="navBarCell1Rev">Class</li>
<li><a href="package-tree.html">Tree</a></li>
<li><a href="../../../../../../../deprecated-list.html">Deprecated</a></li>
<li><a href="../../../../../../../index-all.html">Index</a></li>
<li><a href="../../../../../../../help-doc.html">Help</a></li>
</ul>
</div>
<div class="subNav">
<ul class="navList">
<li><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutionException.html" title="class in edu.emory.mathcs.backport.java.util.concurrent"><span class="strong">Prev Class</span></a></li>
<li><a href="../../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ExecutorCompletionService.html" title="class in edu.emory.mathcs.backport.java.util.concurrent"><span class="strong">Next Class</span></a></li>
</ul>
<ul class="navList">
<li><a href="../../../../../../../index.html?edu/emory/mathcs/backport/java/util/concurrent/Executor.html" target="_top">Frames</a></li>
<li><a href="Executor.html" target="_top">No Frames</a></li>
</ul>
<ul class="navList" id="allclasses_navbar_bottom">
<li><a href="../../../../../../../allclasses-noframe.html">All Classes</a></li>
</ul>
<div>
<script type="text/javascript"><!--
allClassesLink = document.getElementById("allclasses_navbar_bottom");
if(window==top) {
allClassesLink.style.display = "block";
}
else {
allClassesLink.style.display = "none";
}
//-->
</script>
</div>
<div>
<ul class="subNavList">
<li>Summary: </li>
<li>Nested | </li>
<li>Field | </li>
<li>Constr | </li>
<li><a href="#method_summary">Method</a></li>
</ul>
<ul class="subNavList">
<li>Detail: </li>
<li>Field | </li>
<li>Constr | </li>
<li><a href="#method_detail">Method</a></li>
</ul>
</div>
<a name="skip-navbar_bottom">
<!-- -->
</a></div>
<!-- ======== END OF BOTTOM NAVBAR ======= -->
</body>
</html>
|