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<div class="subTitle">org.opensolaris.os.dtrace</div>
<h2 title="Class ProbeData" class="title">Class ProbeData</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li>org.opensolaris.os.dtrace.ProbeData</li>
</ul>
</li>
</ul>
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<dl>
<dt>All Implemented Interfaces:</dt>
<dd>java.io.Serializable, java.lang.Comparable<<a href="../../../../org/opensolaris/os/dtrace/ProbeData.html" title="class in org.opensolaris.os.dtrace">ProbeData</a>></dd>
</dl>
<hr>
<br>
<pre>public final class <span class="typeNameLabel">ProbeData</span>
extends java.lang.Object
implements java.io.Serializable, java.lang.Comparable<<a href="../../../../org/opensolaris/os/dtrace/ProbeData.html" title="class in org.opensolaris.os.dtrace">ProbeData</a>></pre>
<div class="block">Data generated when a DTrace probe fires, contains one record for
every record-generating action in the probe. (Some D actions, such
as <code>clear()</code>, do not generate a <code>ProbeData</code> record.) A
<a href="../../../../org/opensolaris/os/dtrace/Consumer.html" title="interface in org.opensolaris.os.dtrace"><code>Consumer</code></a> gets data from DTrace by registering a <a href="../../../../org/opensolaris/os/dtrace/ConsumerListener.html" title="interface in org.opensolaris.os.dtrace"><code>listener</code></a> to get probe data whenever a probe fires:
<pre><code>
Consumer consumer = new LocalConsumer();
consumer.addConsumerListener(new ConsumerAdapter() {
public void dataReceived(DataEvent e) {
ProbeData probeData = e.getProbeData();
System.out.println(probeData);
}
});
</code></pre>
Getting DTrace to generate that probe data involves compiling,
enabling, and running a D program:
<pre><code>
try {
consumer.open();
consumer.compile(program);
consumer.enable(); // instruments code at matching probe points
consumer.go(); // non-blocking; generates probe data in background
} catch (DTraceException e) {
e.printStackTrace();
}
</code></pre>
Currently the <code>ProbeData</code> instance does not record a timestamp.
If you need a timestamp, trace the built-in <code>timestamp</code>
variable in your D program. (See the
<a href=http://docs.sun.com/app/docs/doc/817-6223/6mlkidlfv?a=view>
<b>Built-in Variables</b></a> section of the <b>Variables</b> chapter of
the <i>Solaris Dynamic Tracing Guide</i>).
<p>
Immutable. Supports persistence using <code>XMLEncoder</code>.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../org/opensolaris/os/dtrace/Consumer.html#addConsumerListener-org.opensolaris.os.dtrace.ConsumerListener-"><code>Consumer.addConsumerListener(ConsumerListener l)</code></a>,
<a href="../../../../org/opensolaris/os/dtrace/ConsumerListener.html#dataReceived-org.opensolaris.os.dtrace.DataEvent-"><code>ConsumerListener.dataReceived(DataEvent e)</code></a>,
<a href="../../../../serialized-form.html#org.opensolaris.os.dtrace.ProbeData">Serialized Form</a></dd>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static class </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/opensolaris/os/dtrace/ProbeData.KeyField.html" title="enum in org.opensolaris.os.dtrace">ProbeData.KeyField</a></span></code>
<div class="block">Enumerates the fields by which <a href="../../../../org/opensolaris/os/dtrace/ProbeData.html" title="class in org.opensolaris.os.dtrace"><code>ProbeData</code></a> may be sorted
using the <a href="../../../../org/opensolaris/os/dtrace/ProbeData.html#getComparator-org.opensolaris.os.dtrace.ProbeData.KeyField...-"><code>getComparator()</code></a>
convenience method.</div>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/opensolaris/os/dtrace/ProbeData.html#ProbeData-int-int-org.opensolaris.os.dtrace.ProbeDescription-org.opensolaris.os.dtrace.Flow-java.util.List-">ProbeData</a></span>(int enabledProbeID,
int cpuID,
<a href="../../../../org/opensolaris/os/dtrace/ProbeDescription.html" title="class in org.opensolaris.os.dtrace">ProbeDescription</a> p,
<a href="../../../../org/opensolaris/os/dtrace/Flow.html" title="class in org.opensolaris.os.dtrace">Flow</a> f,
java.util.List<<a href="../../../../org/opensolaris/os/dtrace/Record.html" title="interface in org.opensolaris.os.dtrace">Record</a>> recordList)</code>
<div class="block">Creates a probe data instance with the given properties and list
of records.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/opensolaris/os/dtrace/ProbeData.html#compareTo-org.opensolaris.os.dtrace.ProbeData-">compareTo</a></span>(<a href="../../../../org/opensolaris/os/dtrace/ProbeData.html" title="class in org.opensolaris.os.dtrace">ProbeData</a> d)</code>
<div class="block">Natural ordering of probe data.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static java.util.Comparator<<a href="../../../../org/opensolaris/os/dtrace/ProbeData.html" title="class in org.opensolaris.os.dtrace">ProbeData</a>></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/opensolaris/os/dtrace/ProbeData.html#getComparator-org.opensolaris.os.dtrace.ProbeData.KeyField...-">getComparator</a></span>(<a href="../../../../org/opensolaris/os/dtrace/ProbeData.KeyField.html" title="enum in org.opensolaris.os.dtrace">ProbeData.KeyField</a>... f)</code>
<div class="block">Convenience method, gets a comparator that sorts multiple <a href="../../../../org/opensolaris/os/dtrace/ProbeDescription.html" title="class in org.opensolaris.os.dtrace"><code>ProbeDescription</code></a> instances by the specified field or fields.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/opensolaris/os/dtrace/ProbeData.html#getCPU--">getCPU</a></span>()</code>
<div class="block">Gets the ID of the CPU on which the probe fired.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/opensolaris/os/dtrace/ProbeDescription.html" title="class in org.opensolaris.os.dtrace">ProbeDescription</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/opensolaris/os/dtrace/ProbeData.html#getEnabledProbeDescription--">getEnabledProbeDescription</a></span>()</code>
<div class="block">Gets the enabled probe description.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/opensolaris/os/dtrace/ProbeData.html#getEnabledProbeID--">getEnabledProbeID</a></span>()</code>
<div class="block">Gets the enabled probe ID.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/opensolaris/os/dtrace/Flow.html" title="class in org.opensolaris.os.dtrace">Flow</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/opensolaris/os/dtrace/ProbeData.html#getFlow--">getFlow</a></span>()</code>
<div class="block">Gets the current state of control flow (function entry or return,
and depth in call stack) at the time of the probe firing that
generated this <code>ProbeData</code> instance, or <code>null</code> if
such information was not requested with the <code>flowindent</code>
option.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>java.util.List<<a href="../../../../org/opensolaris/os/dtrace/Record.html" title="interface in org.opensolaris.os.dtrace">Record</a>></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/opensolaris/os/dtrace/ProbeData.html#getRecords--">getRecords</a></span>()</code>
<div class="block">Gets the records generated by the actions of the probe that
fired, in the same order as the actions that generated the
records.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/opensolaris/os/dtrace/ProbeData.html#toString--">toString</a></span>()</code>
<div class="block">Gets a string representation of this <code>ProbeData</code> instance
useful for logging and not intended for display.</div>
</td>
</tr>
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<h3>Methods inherited from class java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li>
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<h3>Constructor Detail</h3>
<a name="ProbeData-int-int-org.opensolaris.os.dtrace.ProbeDescription-org.opensolaris.os.dtrace.Flow-java.util.List-">
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<h4>ProbeData</h4>
<pre>public ProbeData(int enabledProbeID,
int cpuID,
<a href="../../../../org/opensolaris/os/dtrace/ProbeDescription.html" title="class in org.opensolaris.os.dtrace">ProbeDescription</a> p,
<a href="../../../../org/opensolaris/os/dtrace/Flow.html" title="class in org.opensolaris.os.dtrace">Flow</a> f,
java.util.List<<a href="../../../../org/opensolaris/os/dtrace/Record.html" title="interface in org.opensolaris.os.dtrace">Record</a>> recordList)</pre>
<div class="block">Creates a probe data instance with the given properties and list
of records. Supports XML persistence.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>enabledProbeID</code> - identifies the enabled probe that fired;
the ID is generated by the native DTrace library to distinguish
all probes enabled by the source consumer (as opposed to
all probes on the system)</dd>
<dd><code>cpuID</code> - non-negative ID, identifies the CPU on which the
probe fired</dd>
<dd><code>p</code> - identifies the enabled probe that fired</dd>
<dd><code>f</code> - current state of control flow (entry or return and depth
in call stack) at time of probe firing, included if <a href="../../../../org/opensolaris/os/dtrace/Option.html#flowindent"><code>flowindent</code></a> option used, <code>null</code> otherwise</dd>
<dd><code>recordList</code> - list of records generated by D actions in the
probe that fired, one record per action, may be empty</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.lang.NullPointerException</code> - if the given probe description or
list of records is <code>null</code></dd>
</dl>
</li>
</ul>
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<a name="getComparator-org.opensolaris.os.dtrace.ProbeData.KeyField...-">
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<h4>getComparator</h4>
<pre>public static java.util.Comparator<<a href="../../../../org/opensolaris/os/dtrace/ProbeData.html" title="class in org.opensolaris.os.dtrace">ProbeData</a>> getComparator(<a href="../../../../org/opensolaris/os/dtrace/ProbeData.KeyField.html" title="enum in org.opensolaris.os.dtrace">ProbeData.KeyField</a>... f)</pre>
<div class="block">Convenience method, gets a comparator that sorts multiple <a href="../../../../org/opensolaris/os/dtrace/ProbeDescription.html" title="class in org.opensolaris.os.dtrace"><code>ProbeDescription</code></a> instances by the specified field or fields. If
more than one sort field is specified, the probe data are sorted
by the first field, and in case of a tie, by the second field,
and so on, in the order that the fields are specified.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>f</code> - field specifiers given in descending order of sort
priority; lower priority fields are only compared (as a tie
breaker) when all higher priority fields are equal</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>non-null probe data comparator that sorts by the
specified sort fields in the given order</dd>
</dl>
</li>
</ul>
<a name="getEnabledProbeID--">
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<h4>getEnabledProbeID</h4>
<pre>public int getEnabledProbeID()</pre>
<div class="block">Gets the enabled probe ID. Identifies the enabled probe that
fired and generated this <code>ProbeData</code>. The "epid" is
different from <a href="../../../../org/opensolaris/os/dtrace/ProbeDescription.html#getID--"><code>ProbeDescription.getID()</code></a> in that it
identifies a probe among all probes enabled by the source <a href="../../../../org/opensolaris/os/dtrace/Consumer.html" title="interface in org.opensolaris.os.dtrace"><code>Consumer</code></a>, rather than among all the probes on the system.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the enabled probe ID generated by the native DTrace
library</dd>
</dl>
</li>
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<h4>getCPU</h4>
<pre>public int getCPU()</pre>
<div class="block">Gets the ID of the CPU on which the probe fired.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>ID of the CPU on which the probe fired</dd>
</dl>
</li>
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<a name="getEnabledProbeDescription--">
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<h4>getEnabledProbeDescription</h4>
<pre>public <a href="../../../../org/opensolaris/os/dtrace/ProbeDescription.html" title="class in org.opensolaris.os.dtrace">ProbeDescription</a> getEnabledProbeDescription()</pre>
<div class="block">Gets the enabled probe description. Identifies the enabled probe
that fired and generated this <code>ProbeData</code>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>non-null probe description</dd>
</dl>
</li>
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<h4>getFlow</h4>
<pre>public <a href="../../../../org/opensolaris/os/dtrace/Flow.html" title="class in org.opensolaris.os.dtrace">Flow</a> getFlow()</pre>
<div class="block">Gets the current state of control flow (function entry or return,
and depth in call stack) at the time of the probe firing that
generated this <code>ProbeData</code> instance, or <code>null</code> if
such information was not requested with the <code>flowindent</code>
option.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a description of control flow across function boundaries,
or <code>null</code> if <code>Consumer.getOption(Option.flowindent)</code>
returns <a href="../../../../org/opensolaris/os/dtrace/Option.html#UNSET"><code>Option.UNSET</code></a></dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../org/opensolaris/os/dtrace/Consumer.html#setOption-java.lang.String-"><code>Consumer.setOption(String option)</code></a>,
<a href="../../../../org/opensolaris/os/dtrace/Option.html#flowindent"><code>Option.flowindent</code></a></dd>
</dl>
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<h4>getRecords</h4>
<pre>public java.util.List<<a href="../../../../org/opensolaris/os/dtrace/Record.html" title="interface in org.opensolaris.os.dtrace">Record</a>> getRecords()</pre>
<div class="block">Gets the records generated by the actions of the probe that
fired, in the same order as the actions that generated the
records. The returned list includes one record for every
record-generating D action (some D actions, such as <code>clear()</code>, do not generate records).</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>non-null, unmodifiable list view of the records belonging
to this <code>ProbeData</code> in the order of the actions in the
DTrace probe that generated them (record-producing actions are
generally those that produce output, such as <code>printf()</code>,
but also the <code>exit()</code> action)</dd>
</dl>
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<h4>compareTo</h4>
<pre>public int compareTo(<a href="../../../../org/opensolaris/os/dtrace/ProbeData.html" title="class in org.opensolaris.os.dtrace">ProbeData</a> d)</pre>
<div class="block">Natural ordering of probe data. Sorts probe data by records
first, then if record data is equal, by enabled probe ID.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>compareTo</code> in interface <code>java.lang.Comparable<<a href="../../../../org/opensolaris/os/dtrace/ProbeData.html" title="class in org.opensolaris.os.dtrace">ProbeData</a>></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>d</code> - probe data to be compared with this probe data</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a negative number, zero, or a positive number as this
probe data is less than, equal to, or greater than the given
probe data</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.lang.NullPointerException</code> - if the given probe data is
<code>null</code></dd>
<dd><code>java.lang.ClassCastException</code> - if record lists of both <code>ProbeData</code> instances are not mutually comparable because
corresponding list elements are not comparable or the lists
themselves are different lengths</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../org/opensolaris/os/dtrace/ProbeData.html#getComparator-org.opensolaris.os.dtrace.ProbeData.KeyField...-"><code>getComparator(KeyField[] f)</code></a></dd>
</dl>
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<h4>toString</h4>
<pre>public java.lang.String toString()</pre>
<div class="block">Gets a string representation of this <code>ProbeData</code> instance
useful for logging and not intended for display. The exact
details of the representation are unspecified and subject to
change, but the following format may be regarded as typical:
<pre><code>
class-name[property1 = value1, property2 = value2]
</code></pre></div>
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