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LinkedQueue (DbUnit 2.1 API)
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org.dbunit.util.concurrent</FONT>
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Class LinkedQueue</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><B>org.dbunit.util.concurrent.LinkedQueue</B>
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<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/dbunit/util/concurrent/Channel.html" title="interface in org.dbunit.util.concurrent">Channel</A>, <A HREF="../../../../org/dbunit/util/concurrent/Puttable.html" title="interface in org.dbunit.util.concurrent">Puttable</A>, <A HREF="../../../../org/dbunit/util/concurrent/Takable.html" title="interface in org.dbunit.util.concurrent">Takable</A></DD>
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<DT>public class <B>LinkedQueue</B><DT>extends java.lang.Object<DT>implements <A HREF="../../../../org/dbunit/util/concurrent/Channel.html" title="interface in org.dbunit.util.concurrent">Channel</A></DL>
<P>
A linked list based channel implementation. The algorithm avoids contention between puts and takes when the queue is not empty. Normally a put and a take can proceed simultaneously. (Although it does not allow multiple concurrent puts or takes.) This class tends to perform more efficently than other Channel implementations in producer/consumer applications. <p>[<a href="http://gee.cs.oswego.edu/dl/classes/EDU/oswego/cs/dl/util/concurrent/intro.html"> Introduction to this package. </a>]
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<B>Field Summary</B></FONT></TD>
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<CODE>protected <A HREF="../../../../org/dbunit/util/concurrent/LinkedNode.html" title="class in org.dbunit.util.concurrent">LinkedNode</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/dbunit/util/concurrent/LinkedQueue.html#head_">head_</A></B></CODE>
<BR>
Dummy header node of list.</TD>
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<CODE>protected <A HREF="../../../../org/dbunit/util/concurrent/LinkedNode.html" title="class in org.dbunit.util.concurrent">LinkedNode</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/dbunit/util/concurrent/LinkedQueue.html#last_">last_</A></B></CODE>
<BR>
The last node of list.</TD>
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<CODE>protected java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/dbunit/util/concurrent/LinkedQueue.html#putLock_">putLock_</A></B></CODE>
<BR>
Helper monitor for managing access to last node.</TD>
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<CODE>protected int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/dbunit/util/concurrent/LinkedQueue.html#waitingForTake_">waitingForTake_</A></B></CODE>
<BR>
The number of threads waiting for a take.</TD>
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<TD><CODE><B><A HREF="../../../../org/dbunit/util/concurrent/LinkedQueue.html#LinkedQueue()">LinkedQueue</A></B>()</CODE>
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<CODE>protected java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/dbunit/util/concurrent/LinkedQueue.html#extract()">extract</A></B>()</CODE>
<BR>
Main mechanics for take/poll</TD>
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<CODE>protected void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/dbunit/util/concurrent/LinkedQueue.html#insert(java.lang.Object)">insert</A></B>(java.lang.Object x)</CODE>
<BR>
Main mechanics for put/offer</TD>
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<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/dbunit/util/concurrent/LinkedQueue.html#isEmpty()">isEmpty</A></B>()</CODE>
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<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/dbunit/util/concurrent/LinkedQueue.html#offer(java.lang.Object, long)">offer</A></B>(java.lang.Object x, long msecs)</CODE>
<BR>
Place item in channel only if it can be accepted within msecs milliseconds.</TD>
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<CODE> java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/dbunit/util/concurrent/LinkedQueue.html#peek()">peek</A></B>()</CODE>
<BR>
Return, but do not remove object at head of Channel, or null if it is empty.</TD>
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<CODE> java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/dbunit/util/concurrent/LinkedQueue.html#poll(long)">poll</A></B>(long msecs)</CODE>
<BR>
Return and remove an item from channel only if one is available within msecs milliseconds.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/dbunit/util/concurrent/LinkedQueue.html#put(java.lang.Object)">put</A></B>(java.lang.Object x)</CODE>
<BR>
Place item in the channel, possibly waiting indefinitely until it can be accepted.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/dbunit/util/concurrent/LinkedQueue.html#take()">take</A></B>()</CODE>
<BR>
Return and remove an item from channel, possibly waiting indefinitely until such an item exists.</TD>
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<TD><B>Methods inherited from class java.lang.Object</B></TD>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<A NAME="head_"><!-- --></A><H3>
head_</H3>
<PRE>
protected <A HREF="../../../../org/dbunit/util/concurrent/LinkedNode.html" title="class in org.dbunit.util.concurrent">LinkedNode</A> <B>head_</B></PRE>
<DL>
<DD>Dummy header node of list. The first actual node, if it exists, is always at head_.next. After each take, the old first node becomes the head.
<P>
<DL>
</DL>
</DL>
<HR>
<A NAME="putLock_"><!-- --></A><H3>
putLock_</H3>
<PRE>
protected final java.lang.Object <B>putLock_</B></PRE>
<DL>
<DD>Helper monitor for managing access to last node.
<P>
<DL>
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