mirror of
https://github.com/oxen-io/session-android.git
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Fix NoClassDefFound errors on 2.2 devices.
This commit is contained in:
Moxie Marlinspike
parent
e8c6acdec9
commit
abd7fc67da
@ -1,5 +1,7 @@
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package org.thoughtcrime.securesms.util;
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import org.thoughtcrime.securesms.util.deque.LinkedBlockingDeque;
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public class LinkedBlockingLifoQueue<E> extends LinkedBlockingDeque<E> {
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@Override
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public void put(E runnable) throws InterruptedException {
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616
src/org/thoughtcrime/securesms/util/deque/BlockingDeque.java
Normal file
616
src/org/thoughtcrime/securesms/util/deque/BlockingDeque.java
Normal file
@ -0,0 +1,616 @@
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/*
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* Written by Doug Lea with assistance from members of JCP JSR-166
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* Expert Group and released to the public domain, as explained at
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* http://creativecommons.org/licenses/publicdomain
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*/
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package org.thoughtcrime.securesms.util.deque;
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import java.util.Iterator;
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import java.util.NoSuchElementException;
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import java.util.concurrent.BlockingQueue;
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import java.util.concurrent.TimeUnit;
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/**
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* A {@link Deque} that additionally supports blocking operations that wait
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* for the deque to become non-empty when retrieving an element, and wait for
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* space to become available in the deque when storing an element.
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*
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* <p><tt>BlockingDeque</tt> methods come in four forms, with different ways
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* of handling operations that cannot be satisfied immediately, but may be
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* satisfied at some point in the future:
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* one throws an exception, the second returns a special value (either
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* <tt>null</tt> or <tt>false</tt>, depending on the operation), the third
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* blocks the current thread indefinitely until the operation can succeed,
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* and the fourth blocks for only a given maximum time limit before giving
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* up. These methods are summarized in the following table:
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*
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* <p>
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* <table BORDER CELLPADDING=3 CELLSPACING=1>
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* <tr>
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* <td ALIGN=CENTER COLSPAN = 5> <b>First Element (Head)</b></td>
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* </tr>
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* <tr>
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* <td></td>
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* <td ALIGN=CENTER><em>Throws exception</em></td>
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* <td ALIGN=CENTER><em>Special value</em></td>
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* <td ALIGN=CENTER><em>Blocks</em></td>
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* <td ALIGN=CENTER><em>Times out</em></td>
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* </tr>
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* <tr>
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* <td><b>Insert</b></td>
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* <td>{@link #addFirst addFirst(e)}</td>
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* <td>{@link #offerFirst offerFirst(e)}</td>
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* <td>{@link #putFirst putFirst(e)}</td>
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* <td>{@link #offerFirst offerFirst(e, time, unit)}</td>
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* </tr>
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* <tr>
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* <td><b>Remove</b></td>
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* <td>{@link #removeFirst removeFirst()}</td>
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* <td>{@link #pollFirst pollFirst()}</td>
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* <td>{@link #takeFirst takeFirst()}</td>
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* <td>{@link #pollFirst(long, TimeUnit) pollFirst(time, unit)}</td>
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* </tr>
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* <tr>
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* <td><b>Examine</b></td>
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* <td>{@link #getFirst getFirst()}</td>
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* <td>{@link #peekFirst peekFirst()}</td>
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* <td><em>not applicable</em></td>
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* <td><em>not applicable</em></td>
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* </tr>
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* <tr>
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* <td ALIGN=CENTER COLSPAN = 5> <b>Last Element (Tail)</b></td>
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* </tr>
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* <tr>
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* <td></td>
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* <td ALIGN=CENTER><em>Throws exception</em></td>
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* <td ALIGN=CENTER><em>Special value</em></td>
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* <td ALIGN=CENTER><em>Blocks</em></td>
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* <td ALIGN=CENTER><em>Times out</em></td>
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* </tr>
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* <tr>
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* <td><b>Insert</b></td>
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* <td>{@link #addLast addLast(e)}</td>
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* <td>{@link #offerLast offerLast(e)}</td>
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* <td>{@link #putLast putLast(e)}</td>
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* <td>{@link #offerLast offerLast(e, time, unit)}</td>
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* </tr>
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* <tr>
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* <td><b>Remove</b></td>
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* <td>{@link #removeLast() removeLast()}</td>
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* <td>{@link #pollLast() pollLast()}</td>
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* <td>{@link #takeLast takeLast()}</td>
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* <td>{@link #pollLast(long, TimeUnit) pollLast(time, unit)}</td>
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* </tr>
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* <tr>
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* <td><b>Examine</b></td>
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* <td>{@link #getLast getLast()}</td>
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* <td>{@link #peekLast peekLast()}</td>
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* <td><em>not applicable</em></td>
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* <td><em>not applicable</em></td>
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* </tr>
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* </table>
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*
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* <p>Like any {@link BlockingQueue}, a <tt>BlockingDeque</tt> is thread safe,
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* does not permit null elements, and may (or may not) be
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* capacity-constrained.
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*
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* <p>A <tt>BlockingDeque</tt> implementation may be used directly as a FIFO
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* <tt>BlockingQueue</tt>. The methods inherited from the
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* <tt>BlockingQueue</tt> interface are precisely equivalent to
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* <tt>BlockingDeque</tt> methods as indicated in the following table:
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*
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* <p>
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* <table BORDER CELLPADDING=3 CELLSPACING=1>
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* <tr>
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* <td ALIGN=CENTER> <b><tt>BlockingQueue</tt> Method</b></td>
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* <td ALIGN=CENTER> <b>Equivalent <tt>BlockingDeque</tt> Method</b></td>
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* </tr>
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* <tr>
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* <td ALIGN=CENTER COLSPAN = 2> <b>Insert</b></td>
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* </tr>
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* <tr>
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* <td>{@link #add add(e)}</td>
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* <td>{@link #addLast addLast(e)}</td>
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* </tr>
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* <tr>
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* <td>{@link #offer offer(e)}</td>
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* <td>{@link #offerLast offerLast(e)}</td>
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* </tr>
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* <tr>
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* <td>{@link #put put(e)}</td>
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* <td>{@link #putLast putLast(e)}</td>
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* </tr>
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* <tr>
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* <td>{@link #offer offer(e, time, unit)}</td>
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* <td>{@link #offerLast offerLast(e, time, unit)}</td>
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* </tr>
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* <tr>
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* <td ALIGN=CENTER COLSPAN = 2> <b>Remove</b></td>
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* </tr>
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* <tr>
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* <td>{@link #remove() remove()}</td>
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* <td>{@link #removeFirst() removeFirst()}</td>
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* </tr>
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* <tr>
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* <td>{@link #poll() poll()}</td>
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* <td>{@link #pollFirst() pollFirst()}</td>
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* </tr>
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* <tr>
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* <td>{@link #take() take()}</td>
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* <td>{@link #takeFirst() takeFirst()}</td>
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* </tr>
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* <tr>
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* <td>{@link #poll(long, TimeUnit) poll(time, unit)}</td>
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* <td>{@link #pollFirst(long, TimeUnit) pollFirst(time, unit)}</td>
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* </tr>
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* <tr>
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* <td ALIGN=CENTER COLSPAN = 2> <b>Examine</b></td>
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* </tr>
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* <tr>
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* <td>{@link #element() element()}</td>
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* <td>{@link #getFirst() getFirst()}</td>
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* </tr>
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* <tr>
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* <td>{@link #peek() peek()}</td>
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* <td>{@link #peekFirst() peekFirst()}</td>
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* </tr>
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* </table>
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*
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* <p>Memory consistency effects: As with other concurrent
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* collections, actions in a thread prior to placing an object into a
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* {@code BlockingDeque}
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* <a href="package-summary.html#MemoryVisibility"><i>happen-before</i></a>
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* actions subsequent to the access or removal of that element from
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* the {@code BlockingDeque} in another thread.
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*
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* <p>This interface is a member of the
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* <a href="{@docRoot}/../technotes/guides/collections/index.html">
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* Java Collections Framework</a>.
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*
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* @since 1.6
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* @author Doug Lea
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* @param <E> the type of elements held in this collection
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*/
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public interface BlockingDeque<E> extends BlockingQueue<E>, Deque<E> {
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/*
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* We have "diamond" multiple interface inheritance here, and that
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* introduces ambiguities. Methods might end up with different
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* specs depending on the branch chosen by javadoc. Thus a lot of
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* methods specs here are copied from superinterfaces.
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*/
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/**
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* Inserts the specified element at the front of this deque if it is
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* possible to do so immediately without violating capacity restrictions,
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* throwing an <tt>IllegalStateException</tt> if no space is currently
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* available. When using a capacity-restricted deque, it is generally
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* preferable to use {@link #offerFirst offerFirst}.
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*
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* @param e the element to add
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* @throws IllegalStateException {@inheritDoc}
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* @throws ClassCastException {@inheritDoc}
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* @throws NullPointerException if the specified element is null
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* @throws IllegalArgumentException {@inheritDoc}
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*/
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void addFirst(E e);
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/**
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* Inserts the specified element at the end of this deque if it is
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* possible to do so immediately without violating capacity restrictions,
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* throwing an <tt>IllegalStateException</tt> if no space is currently
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* available. When using a capacity-restricted deque, it is generally
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* preferable to use {@link #offerLast offerLast}.
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*
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* @param e the element to add
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* @throws IllegalStateException {@inheritDoc}
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* @throws ClassCastException {@inheritDoc}
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* @throws NullPointerException if the specified element is null
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* @throws IllegalArgumentException {@inheritDoc}
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*/
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void addLast(E e);
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/**
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* Inserts the specified element at the front of this deque if it is
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* possible to do so immediately without violating capacity restrictions,
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* returning <tt>true</tt> upon success and <tt>false</tt> if no space is
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* currently available.
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* When using a capacity-restricted deque, this method is generally
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* preferable to the {@link #addFirst addFirst} method, which can
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* fail to insert an element only by throwing an exception.
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*
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* @param e the element to add
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* @throws ClassCastException {@inheritDoc}
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* @throws NullPointerException if the specified element is null
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* @throws IllegalArgumentException {@inheritDoc}
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*/
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boolean offerFirst(E e);
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/**
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* Inserts the specified element at the end of this deque if it is
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* possible to do so immediately without violating capacity restrictions,
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* returning <tt>true</tt> upon success and <tt>false</tt> if no space is
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* currently available.
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* When using a capacity-restricted deque, this method is generally
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* preferable to the {@link #addLast addLast} method, which can
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* fail to insert an element only by throwing an exception.
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*
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* @param e the element to add
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* @throws ClassCastException {@inheritDoc}
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* @throws NullPointerException if the specified element is null
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* @throws IllegalArgumentException {@inheritDoc}
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*/
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boolean offerLast(E e);
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/**
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* Inserts the specified element at the front of this deque,
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* waiting if necessary for space to become available.
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*
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* @param e the element to add
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* @throws InterruptedException if interrupted while waiting
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* @throws ClassCastException if the class of the specified element
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* prevents it from being added to this deque
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* @throws NullPointerException if the specified element is null
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* @throws IllegalArgumentException if some property of the specified
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* element prevents it from being added to this deque
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*/
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void putFirst(E e) throws InterruptedException;
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/**
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* Inserts the specified element at the end of this deque,
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* waiting if necessary for space to become available.
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*
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* @param e the element to add
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* @throws InterruptedException if interrupted while waiting
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* @throws ClassCastException if the class of the specified element
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* prevents it from being added to this deque
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* @throws NullPointerException if the specified element is null
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* @throws IllegalArgumentException if some property of the specified
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* element prevents it from being added to this deque
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*/
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void putLast(E e) throws InterruptedException;
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/**
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* Inserts the specified element at the front of this deque,
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* waiting up to the specified wait time if necessary for space to
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* become available.
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*
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* @param e the element to add
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* @param timeout how long to wait before giving up, in units of
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* <tt>unit</tt>
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* @param unit a <tt>TimeUnit</tt> determining how to interpret the
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* <tt>timeout</tt> parameter
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* @return <tt>true</tt> if successful, or <tt>false</tt> if
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* the specified waiting time elapses before space is available
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* @throws InterruptedException if interrupted while waiting
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* @throws ClassCastException if the class of the specified element
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* prevents it from being added to this deque
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* @throws NullPointerException if the specified element is null
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* @throws IllegalArgumentException if some property of the specified
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* element prevents it from being added to this deque
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*/
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boolean offerFirst(E e, long timeout, TimeUnit unit)
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throws InterruptedException;
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/**
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* Inserts the specified element at the end of this deque,
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* waiting up to the specified wait time if necessary for space to
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* become available.
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*
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* @param e the element to add
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* @param timeout how long to wait before giving up, in units of
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* <tt>unit</tt>
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* @param unit a <tt>TimeUnit</tt> determining how to interpret the
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* <tt>timeout</tt> parameter
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* @return <tt>true</tt> if successful, or <tt>false</tt> if
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* the specified waiting time elapses before space is available
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* @throws InterruptedException if interrupted while waiting
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* @throws ClassCastException if the class of the specified element
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* prevents it from being added to this deque
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* @throws NullPointerException if the specified element is null
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* @throws IllegalArgumentException if some property of the specified
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* element prevents it from being added to this deque
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*/
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boolean offerLast(E e, long timeout, TimeUnit unit)
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throws InterruptedException;
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/**
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* Retrieves and removes the first element of this deque, waiting
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* if necessary until an element becomes available.
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*
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* @return the head of this deque
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* @throws InterruptedException if interrupted while waiting
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*/
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E takeFirst() throws InterruptedException;
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/**
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* Retrieves and removes the last element of this deque, waiting
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* if necessary until an element becomes available.
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*
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* @return the tail of this deque
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* @throws InterruptedException if interrupted while waiting
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*/
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E takeLast() throws InterruptedException;
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/**
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* Retrieves and removes the first element of this deque, waiting
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* up to the specified wait time if necessary for an element to
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* become available.
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*
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* @param timeout how long to wait before giving up, in units of
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* <tt>unit</tt>
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* @param unit a <tt>TimeUnit</tt> determining how to interpret the
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* <tt>timeout</tt> parameter
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* @return the head of this deque, or <tt>null</tt> if the specified
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* waiting time elapses before an element is available
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* @throws InterruptedException if interrupted while waiting
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*/
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E pollFirst(long timeout, TimeUnit unit)
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throws InterruptedException;
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/**
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* Retrieves and removes the last element of this deque, waiting
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* up to the specified wait time if necessary for an element to
|
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* become available.
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*
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* @param timeout how long to wait before giving up, in units of
|
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* <tt>unit</tt>
|
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* @param unit a <tt>TimeUnit</tt> determining how to interpret the
|
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* <tt>timeout</tt> parameter
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* @return the tail of this deque, or <tt>null</tt> if the specified
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* waiting time elapses before an element is available
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* @throws InterruptedException if interrupted while waiting
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*/
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E pollLast(long timeout, TimeUnit unit)
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throws InterruptedException;
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/**
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* Removes the first occurrence of the specified element from this deque.
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* If the deque does not contain the element, it is unchanged.
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* More formally, removes the first element <tt>e</tt> such that
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* <tt>o.equals(e)</tt> (if such an element exists).
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* Returns <tt>true</tt> if this deque contained the specified element
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* (or equivalently, if this deque changed as a result of the call).
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*
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* @param o element to be removed from this deque, if present
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* @return <tt>true</tt> if an element was removed as a result of this call
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* @throws ClassCastException if the class of the specified element
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* is incompatible with this deque (optional)
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* @throws NullPointerException if the specified element is null (optional)
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*/
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boolean removeFirstOccurrence(Object o);
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/**
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* Removes the last occurrence of the specified element from this deque.
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* If the deque does not contain the element, it is unchanged.
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* More formally, removes the last element <tt>e</tt> such that
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* <tt>o.equals(e)</tt> (if such an element exists).
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* Returns <tt>true</tt> if this deque contained the specified element
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* (or equivalently, if this deque changed as a result of the call).
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*
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* @param o element to be removed from this deque, if present
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* @return <tt>true</tt> if an element was removed as a result of this call
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* @throws ClassCastException if the class of the specified element
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* is incompatible with this deque (optional)
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* @throws NullPointerException if the specified element is null (optional)
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*/
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boolean removeLastOccurrence(Object o);
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// *** BlockingQueue methods ***
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/**
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* Inserts the specified element into the queue represented by this deque
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* (in other words, at the tail of this deque) if it is possible to do so
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* immediately without violating capacity restrictions, returning
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* <tt>true</tt> upon success and throwing an
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* <tt>IllegalStateException</tt> if no space is currently available.
|
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* When using a capacity-restricted deque, it is generally preferable to
|
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* use {@link #offer offer}.
|
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*
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* <p>This method is equivalent to {@link #addLast addLast}.
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*
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* @param e the element to add
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* @throws IllegalStateException {@inheritDoc}
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* @throws ClassCastException if the class of the specified element
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* prevents it from being added to this deque
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* @throws NullPointerException if the specified element is null
|
||||
* @throws IllegalArgumentException if some property of the specified
|
||||
* element prevents it from being added to this deque
|
||||
*/
|
||||
boolean add(E e);
|
||||
|
||||
/**
|
||||
* Inserts the specified element into the queue represented by this deque
|
||||
* (in other words, at the tail of this deque) if it is possible to do so
|
||||
* immediately without violating capacity restrictions, returning
|
||||
* <tt>true</tt> upon success and <tt>false</tt> if no space is currently
|
||||
* available. When using a capacity-restricted deque, this method is
|
||||
* generally preferable to the {@link #add} method, which can fail to
|
||||
* insert an element only by throwing an exception.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #offerLast offerLast}.
|
||||
*
|
||||
* @param e the element to add
|
||||
* @throws ClassCastException if the class of the specified element
|
||||
* prevents it from being added to this deque
|
||||
* @throws NullPointerException if the specified element is null
|
||||
* @throws IllegalArgumentException if some property of the specified
|
||||
* element prevents it from being added to this deque
|
||||
*/
|
||||
boolean offer(E e);
|
||||
|
||||
/**
|
||||
* Inserts the specified element into the queue represented by this deque
|
||||
* (in other words, at the tail of this deque), waiting if necessary for
|
||||
* space to become available.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #putLast putLast}.
|
||||
*
|
||||
* @param e the element to add
|
||||
* @throws InterruptedException {@inheritDoc}
|
||||
* @throws ClassCastException if the class of the specified element
|
||||
* prevents it from being added to this deque
|
||||
* @throws NullPointerException if the specified element is null
|
||||
* @throws IllegalArgumentException if some property of the specified
|
||||
* element prevents it from being added to this deque
|
||||
*/
|
||||
void put(E e) throws InterruptedException;
|
||||
|
||||
/**
|
||||
* Inserts the specified element into the queue represented by this deque
|
||||
* (in other words, at the tail of this deque), waiting up to the
|
||||
* specified wait time if necessary for space to become available.
|
||||
*
|
||||
* <p>This method is equivalent to
|
||||
* {@link #offerLast offerLast}.
|
||||
*
|
||||
* @param e the element to add
|
||||
* @return <tt>true</tt> if the element was added to this deque, else
|
||||
* <tt>false</tt>
|
||||
* @throws InterruptedException {@inheritDoc}
|
||||
* @throws ClassCastException if the class of the specified element
|
||||
* prevents it from being added to this deque
|
||||
* @throws NullPointerException if the specified element is null
|
||||
* @throws IllegalArgumentException if some property of the specified
|
||||
* element prevents it from being added to this deque
|
||||
*/
|
||||
boolean offer(E e, long timeout, TimeUnit unit)
|
||||
throws InterruptedException;
|
||||
|
||||
/**
|
||||
* Retrieves and removes the head of the queue represented by this deque
|
||||
* (in other words, the first element of this deque).
|
||||
* This method differs from {@link #poll poll} only in that it
|
||||
* throws an exception if this deque is empty.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #removeFirst() removeFirst}.
|
||||
*
|
||||
* @return the head of the queue represented by this deque
|
||||
* @throws NoSuchElementException if this deque is empty
|
||||
*/
|
||||
E remove();
|
||||
|
||||
/**
|
||||
* Retrieves and removes the head of the queue represented by this deque
|
||||
* (in other words, the first element of this deque), or returns
|
||||
* <tt>null</tt> if this deque is empty.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #pollFirst()}.
|
||||
*
|
||||
* @return the head of this deque, or <tt>null</tt> if this deque is empty
|
||||
*/
|
||||
E poll();
|
||||
|
||||
/**
|
||||
* Retrieves and removes the head of the queue represented by this deque
|
||||
* (in other words, the first element of this deque), waiting if
|
||||
* necessary until an element becomes available.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #takeFirst() takeFirst}.
|
||||
*
|
||||
* @return the head of this deque
|
||||
* @throws InterruptedException if interrupted while waiting
|
||||
*/
|
||||
E take() throws InterruptedException;
|
||||
|
||||
/**
|
||||
* Retrieves and removes the head of the queue represented by this deque
|
||||
* (in other words, the first element of this deque), waiting up to the
|
||||
* specified wait time if necessary for an element to become available.
|
||||
*
|
||||
* <p>This method is equivalent to
|
||||
* {@link #pollFirst(long,TimeUnit) pollFirst}.
|
||||
*
|
||||
* @return the head of this deque, or <tt>null</tt> if the
|
||||
* specified waiting time elapses before an element is available
|
||||
* @throws InterruptedException if interrupted while waiting
|
||||
*/
|
||||
E poll(long timeout, TimeUnit unit)
|
||||
throws InterruptedException;
|
||||
|
||||
/**
|
||||
* Retrieves, but does not remove, the head of the queue represented by
|
||||
* this deque (in other words, the first element of this deque).
|
||||
* This method differs from {@link #peek peek} only in that it throws an
|
||||
* exception if this deque is empty.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #getFirst() getFirst}.
|
||||
*
|
||||
* @return the head of this deque
|
||||
* @throws NoSuchElementException if this deque is empty
|
||||
*/
|
||||
E element();
|
||||
|
||||
/**
|
||||
* Retrieves, but does not remove, the head of the queue represented by
|
||||
* this deque (in other words, the first element of this deque), or
|
||||
* returns <tt>null</tt> if this deque is empty.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #peekFirst() peekFirst}.
|
||||
*
|
||||
* @return the head of this deque, or <tt>null</tt> if this deque is empty
|
||||
*/
|
||||
E peek();
|
||||
|
||||
/**
|
||||
* Removes the first occurrence of the specified element from this deque.
|
||||
* If the deque does not contain the element, it is unchanged.
|
||||
* More formally, removes the first element <tt>e</tt> such that
|
||||
* <tt>o.equals(e)</tt> (if such an element exists).
|
||||
* Returns <tt>true</tt> if this deque contained the specified element
|
||||
* (or equivalently, if this deque changed as a result of the call).
|
||||
*
|
||||
* <p>This method is equivalent to
|
||||
* {@link #removeFirstOccurrence removeFirstOccurrence}.
|
||||
*
|
||||
* @param o element to be removed from this deque, if present
|
||||
* @return <tt>true</tt> if this deque changed as a result of the call
|
||||
* @throws ClassCastException if the class of the specified element
|
||||
* is incompatible with this deque (optional)
|
||||
* @throws NullPointerException if the specified element is null (optional)
|
||||
*/
|
||||
boolean remove(Object o);
|
||||
|
||||
/**
|
||||
* Returns <tt>true</tt> if this deque contains the specified element.
|
||||
* More formally, returns <tt>true</tt> if and only if this deque contains
|
||||
* at least one element <tt>e</tt> such that <tt>o.equals(e)</tt>.
|
||||
*
|
||||
* @param o object to be checked for containment in this deque
|
||||
* @return <tt>true</tt> if this deque contains the specified element
|
||||
* @throws ClassCastException if the class of the specified element
|
||||
* is incompatible with this deque (optional)
|
||||
* @throws NullPointerException if the specified element is null (optional)
|
||||
*/
|
||||
public boolean contains(Object o);
|
||||
|
||||
/**
|
||||
* Returns the number of elements in this deque.
|
||||
*
|
||||
* @return the number of elements in this deque
|
||||
*/
|
||||
public int size();
|
||||
|
||||
/**
|
||||
* Returns an iterator over the elements in this deque in proper sequence.
|
||||
* The elements will be returned in order from first (head) to last (tail).
|
||||
*
|
||||
* @return an iterator over the elements in this deque in proper sequence
|
||||
*/
|
||||
Iterator<E> iterator();
|
||||
|
||||
// *** Stack methods ***
|
||||
|
||||
/**
|
||||
* Pushes an element onto the stack represented by this deque. In other
|
||||
* words, inserts the element at the front of this deque unless it would
|
||||
* violate capacity restrictions.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #addFirst addFirst}.
|
||||
*
|
||||
* @throws IllegalStateException {@inheritDoc}
|
||||
* @throws ClassCastException {@inheritDoc}
|
||||
* @throws NullPointerException if the specified element is null
|
||||
* @throws IllegalArgumentException {@inheritDoc}
|
||||
*/
|
||||
void push(E e);
|
||||
}
|
||||
555
src/org/thoughtcrime/securesms/util/deque/Deque.java
Normal file
555
src/org/thoughtcrime/securesms/util/deque/Deque.java
Normal file
@ -0,0 +1,555 @@
|
||||
/*
|
||||
* Written by Doug Lea and Josh Bloch with assistance from members of
|
||||
* JCP JSR-166 Expert Group and released to the public domain, as explained
|
||||
* at http://creativecommons.org/licenses/publicdomain
|
||||
*/
|
||||
|
||||
package org.thoughtcrime.securesms.util.deque;
|
||||
|
||||
import java.util.Collection;
|
||||
import java.util.Iterator;
|
||||
import java.util.List;
|
||||
import java.util.NoSuchElementException;
|
||||
import java.util.Queue;
|
||||
import java.util.Stack;
|
||||
|
||||
// BEGIN android-note
|
||||
// removed link to collections framework docs
|
||||
// changed {@link #offer(Object)} to {@link #offer} to satisfy DroidDoc
|
||||
// END android-note
|
||||
|
||||
/**
|
||||
* A linear collection that supports element insertion and removal at
|
||||
* both ends. The name <i>deque</i> is short for "double ended queue"
|
||||
* and is usually pronounced "deck". Most <tt>Deque</tt>
|
||||
* implementations place no fixed limits on the number of elements
|
||||
* they may contain, but this interface supports capacity-restricted
|
||||
* deques as well as those with no fixed size limit.
|
||||
*
|
||||
* <p>This interface defines methods to access the elements at both
|
||||
* ends of the deque. Methods are provided to insert, remove, and
|
||||
* examine the element. Each of these methods exists in two forms:
|
||||
* one throws an exception if the operation fails, the other returns a
|
||||
* special value (either <tt>null</tt> or <tt>false</tt>, depending on
|
||||
* the operation). The latter form of the insert operation is
|
||||
* designed specifically for use with capacity-restricted
|
||||
* <tt>Deque</tt> implementations; in most implementations, insert
|
||||
* operations cannot fail.
|
||||
*
|
||||
* <p>The twelve methods described above are summarized in the
|
||||
* following table:
|
||||
*
|
||||
* <p>
|
||||
* <table BORDER CELLPADDING=3 CELLSPACING=1>
|
||||
* <tr>
|
||||
* <td></td>
|
||||
* <td ALIGN=CENTER COLSPAN = 2> <b>First Element (Head)</b></td>
|
||||
* <td ALIGN=CENTER COLSPAN = 2> <b>Last Element (Tail)</b></td>
|
||||
* </tr>
|
||||
* <tr>
|
||||
* <td></td>
|
||||
* <td ALIGN=CENTER><em>Throws exception</em></td>
|
||||
* <td ALIGN=CENTER><em>Special value</em></td>
|
||||
* <td ALIGN=CENTER><em>Throws exception</em></td>
|
||||
* <td ALIGN=CENTER><em>Special value</em></td>
|
||||
* </tr>
|
||||
* <tr>
|
||||
* <td><b>Insert</b></td>
|
||||
* <td>{@link #addFirst addFirst(e)}</td>
|
||||
* <td>{@link #offerFirst offerFirst(e)}</td>
|
||||
* <td>{@link #addLast addLast(e)}</td>
|
||||
* <td>{@link #offerLast offerLast(e)}</td>
|
||||
* </tr>
|
||||
* <tr>
|
||||
* <td><b>Remove</b></td>
|
||||
* <td>{@link #removeFirst removeFirst()}</td>
|
||||
* <td>{@link #pollFirst pollFirst()}</td>
|
||||
* <td>{@link #removeLast removeLast()}</td>
|
||||
* <td>{@link #pollLast pollLast()}</td>
|
||||
* </tr>
|
||||
* <tr>
|
||||
* <td><b>Examine</b></td>
|
||||
* <td>{@link #getFirst getFirst()}</td>
|
||||
* <td>{@link #peekFirst peekFirst()}</td>
|
||||
* <td>{@link #getLast getLast()}</td>
|
||||
* <td>{@link #peekLast peekLast()}</td>
|
||||
* </tr>
|
||||
* </table>
|
||||
*
|
||||
* <p>This interface extends the {@link Queue} interface. When a deque is
|
||||
* used as a queue, FIFO (First-In-First-Out) behavior results. Elements are
|
||||
* added at the end of the deque and removed from the beginning. The methods
|
||||
* inherited from the <tt>Queue</tt> interface are precisely equivalent to
|
||||
* <tt>Deque</tt> methods as indicated in the following table:
|
||||
*
|
||||
* <p>
|
||||
* <table BORDER CELLPADDING=3 CELLSPACING=1>
|
||||
* <tr>
|
||||
* <td ALIGN=CENTER> <b><tt>Queue</tt> Method</b></td>
|
||||
* <td ALIGN=CENTER> <b>Equivalent <tt>Deque</tt> Method</b></td>
|
||||
* </tr>
|
||||
* <tr>
|
||||
* <td>{@link java.util.Queue#add add(e)}</td>
|
||||
* <td>{@link #addLast addLast(e)}</td>
|
||||
* </tr>
|
||||
* <tr>
|
||||
* <td>{@link java.util.Queue#offer offer(e)}</td>
|
||||
* <td>{@link #offerLast offerLast(e)}</td>
|
||||
* </tr>
|
||||
* <tr>
|
||||
* <td>{@link java.util.Queue#remove remove()}</td>
|
||||
* <td>{@link #removeFirst removeFirst()}</td>
|
||||
* </tr>
|
||||
* <tr>
|
||||
* <td>{@link java.util.Queue#poll poll()}</td>
|
||||
* <td>{@link #pollFirst pollFirst()}</td>
|
||||
* </tr>
|
||||
* <tr>
|
||||
* <td>{@link java.util.Queue#element element()}</td>
|
||||
* <td>{@link #getFirst getFirst()}</td>
|
||||
* </tr>
|
||||
* <tr>
|
||||
* <td>{@link java.util.Queue#peek peek()}</td>
|
||||
* <td>{@link #peek peekFirst()}</td>
|
||||
* </tr>
|
||||
* </table>
|
||||
*
|
||||
* <p>Deques can also be used as LIFO (Last-In-First-Out) stacks. This
|
||||
* interface should be used in preference to the legacy {@link Stack} class.
|
||||
* When a deque is used as a stack, elements are pushed and popped from the
|
||||
* beginning of the deque. Stack methods are precisely equivalent to
|
||||
* <tt>Deque</tt> methods as indicated in the table below:
|
||||
*
|
||||
* <p>
|
||||
* <table BORDER CELLPADDING=3 CELLSPACING=1>
|
||||
* <tr>
|
||||
* <td ALIGN=CENTER> <b>Stack Method</b></td>
|
||||
* <td ALIGN=CENTER> <b>Equivalent <tt>Deque</tt> Method</b></td>
|
||||
* </tr>
|
||||
* <tr>
|
||||
* <td>{@link #push push(e)}</td>
|
||||
* <td>{@link #addFirst addFirst(e)}</td>
|
||||
* </tr>
|
||||
* <tr>
|
||||
* <td>{@link #pop pop()}</td>
|
||||
* <td>{@link #removeFirst removeFirst()}</td>
|
||||
* </tr>
|
||||
* <tr>
|
||||
* <td>{@link #peek peek()}</td>
|
||||
* <td>{@link #peekFirst peekFirst()}</td>
|
||||
* </tr>
|
||||
* </table>
|
||||
*
|
||||
* <p>Note that the {@link #peek peek} method works equally well when
|
||||
* a deque is used as a queue or a stack; in either case, elements are
|
||||
* drawn from the beginning of the deque.
|
||||
*
|
||||
* <p>This interface provides two methods to remove interior
|
||||
* elements, {@link #removeFirstOccurrence removeFirstOccurrence} and
|
||||
* {@link #removeLastOccurrence removeLastOccurrence}.
|
||||
*
|
||||
* <p>Unlike the {@link List} interface, this interface does not
|
||||
* provide support for indexed access to elements.
|
||||
*
|
||||
* <p>While <tt>Deque</tt> implementations are not strictly required
|
||||
* to prohibit the insertion of null elements, they are strongly
|
||||
* encouraged to do so. Users of any <tt>Deque</tt> implementations
|
||||
* that do allow null elements are strongly encouraged <i>not</i> to
|
||||
* take advantage of the ability to insert nulls. This is so because
|
||||
* <tt>null</tt> is used as a special return value by various methods
|
||||
* to indicated that the deque is empty.
|
||||
*
|
||||
* <p><tt>Deque</tt> implementations generally do not define
|
||||
* element-based versions of the <tt>equals</tt> and <tt>hashCode</tt>
|
||||
* methods, but instead inherit the identity-based versions from class
|
||||
* <tt>Object</tt>.
|
||||
*
|
||||
* @author Doug Lea
|
||||
* @author Josh Bloch
|
||||
* @since 1.6
|
||||
* @param <E> the type of elements held in this collection
|
||||
*/
|
||||
|
||||
public interface Deque<E> extends Queue<E> {
|
||||
/**
|
||||
* Inserts the specified element at the front of this deque if it is
|
||||
* possible to do so immediately without violating capacity restrictions.
|
||||
* When using a capacity-restricted deque, it is generally preferable to
|
||||
* use method {@link #offerFirst}.
|
||||
*
|
||||
* @param e the element to add
|
||||
* @throws IllegalStateException if the element cannot be added at this
|
||||
* time due to capacity restrictions
|
||||
* @throws ClassCastException if the class of the specified element
|
||||
* prevents it from being added to this deque
|
||||
* @throws NullPointerException if the specified element is null and this
|
||||
* deque does not permit null elements
|
||||
* @throws IllegalArgumentException if some property of the specified
|
||||
* element prevents it from being added to this deque
|
||||
*/
|
||||
void addFirst(E e);
|
||||
|
||||
/**
|
||||
* Inserts the specified element at the end of this deque if it is
|
||||
* possible to do so immediately without violating capacity restrictions.
|
||||
* When using a capacity-restricted deque, it is generally preferable to
|
||||
* use method {@link #offerLast}.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #add}.
|
||||
*
|
||||
* @param e the element to add
|
||||
* @throws IllegalStateException if the element cannot be added at this
|
||||
* time due to capacity restrictions
|
||||
* @throws ClassCastException if the class of the specified element
|
||||
* prevents it from being added to this deque
|
||||
* @throws NullPointerException if the specified element is null and this
|
||||
* deque does not permit null elements
|
||||
* @throws IllegalArgumentException if some property of the specified
|
||||
* element prevents it from being added to this deque
|
||||
*/
|
||||
void addLast(E e);
|
||||
|
||||
/**
|
||||
* Inserts the specified element at the front of this deque unless it would
|
||||
* violate capacity restrictions. When using a capacity-restricted deque,
|
||||
* this method is generally preferable to the {@link #addFirst} method,
|
||||
* which can fail to insert an element only by throwing an exception.
|
||||
*
|
||||
* @param e the element to add
|
||||
* @return <tt>true</tt> if the element was added to this deque, else
|
||||
* <tt>false</tt>
|
||||
* @throws ClassCastException if the class of the specified element
|
||||
* prevents it from being added to this deque
|
||||
* @throws NullPointerException if the specified element is null and this
|
||||
* deque does not permit null elements
|
||||
* @throws IllegalArgumentException if some property of the specified
|
||||
* element prevents it from being added to this deque
|
||||
*/
|
||||
boolean offerFirst(E e);
|
||||
|
||||
/**
|
||||
* Inserts the specified element at the end of this deque unless it would
|
||||
* violate capacity restrictions. When using a capacity-restricted deque,
|
||||
* this method is generally preferable to the {@link #addLast} method,
|
||||
* which can fail to insert an element only by throwing an exception.
|
||||
*
|
||||
* @param e the element to add
|
||||
* @return <tt>true</tt> if the element was added to this deque, else
|
||||
* <tt>false</tt>
|
||||
* @throws ClassCastException if the class of the specified element
|
||||
* prevents it from being added to this deque
|
||||
* @throws NullPointerException if the specified element is null and this
|
||||
* deque does not permit null elements
|
||||
* @throws IllegalArgumentException if some property of the specified
|
||||
* element prevents it from being added to this deque
|
||||
*/
|
||||
boolean offerLast(E e);
|
||||
|
||||
/**
|
||||
* Retrieves and removes the first element of this deque. This method
|
||||
* differs from {@link #pollFirst pollFirst} only in that it throws an
|
||||
* exception if this deque is empty.
|
||||
*
|
||||
* @return the head of this deque
|
||||
* @throws NoSuchElementException if this deque is empty
|
||||
*/
|
||||
E removeFirst();
|
||||
|
||||
/**
|
||||
* Retrieves and removes the last element of this deque. This method
|
||||
* differs from {@link #pollLast pollLast} only in that it throws an
|
||||
* exception if this deque is empty.
|
||||
*
|
||||
* @return the tail of this deque
|
||||
* @throws NoSuchElementException if this deque is empty
|
||||
*/
|
||||
E removeLast();
|
||||
|
||||
/**
|
||||
* Retrieves and removes the first element of this deque,
|
||||
* or returns <tt>null</tt> if this deque is empty.
|
||||
*
|
||||
* @return the head of this deque, or <tt>null</tt> if this deque is empty
|
||||
*/
|
||||
E pollFirst();
|
||||
|
||||
/**
|
||||
* Retrieves and removes the last element of this deque,
|
||||
* or returns <tt>null</tt> if this deque is empty.
|
||||
*
|
||||
* @return the tail of this deque, or <tt>null</tt> if this deque is empty
|
||||
*/
|
||||
E pollLast();
|
||||
|
||||
/**
|
||||
* Retrieves, but does not remove, the first element of this deque.
|
||||
*
|
||||
* This method differs from {@link #peekFirst peekFirst} only in that it
|
||||
* throws an exception if this deque is empty.
|
||||
*
|
||||
* @return the head of this deque
|
||||
* @throws NoSuchElementException if this deque is empty
|
||||
*/
|
||||
E getFirst();
|
||||
|
||||
/**
|
||||
* Retrieves, but does not remove, the last element of this deque.
|
||||
* This method differs from {@link #peekLast peekLast} only in that it
|
||||
* throws an exception if this deque is empty.
|
||||
*
|
||||
* @return the tail of this deque
|
||||
* @throws NoSuchElementException if this deque is empty
|
||||
*/
|
||||
E getLast();
|
||||
|
||||
/**
|
||||
* Retrieves, but does not remove, the first element of this deque,
|
||||
* or returns <tt>null</tt> if this deque is empty.
|
||||
*
|
||||
* @return the head of this deque, or <tt>null</tt> if this deque is empty
|
||||
*/
|
||||
E peekFirst();
|
||||
|
||||
/**
|
||||
* Retrieves, but does not remove, the last element of this deque,
|
||||
* or returns <tt>null</tt> if this deque is empty.
|
||||
*
|
||||
* @return the tail of this deque, or <tt>null</tt> if this deque is empty
|
||||
*/
|
||||
E peekLast();
|
||||
|
||||
/**
|
||||
* Removes the first occurrence of the specified element from this deque.
|
||||
* If the deque does not contain the element, it is unchanged.
|
||||
* More formally, removes the first element <tt>e</tt> such that
|
||||
* <tt>(o==null ? e==null : o.equals(e))</tt>
|
||||
* (if such an element exists).
|
||||
* Returns <tt>true</tt> if this deque contained the specified element
|
||||
* (or equivalently, if this deque changed as a result of the call).
|
||||
*
|
||||
* @param o element to be removed from this deque, if present
|
||||
* @return <tt>true</tt> if an element was removed as a result of this call
|
||||
* @throws ClassCastException if the class of the specified element
|
||||
* is incompatible with this deque (optional)
|
||||
* @throws NullPointerException if the specified element is null and this
|
||||
* deque does not permit null elements (optional)
|
||||
*/
|
||||
boolean removeFirstOccurrence(Object o);
|
||||
|
||||
/**
|
||||
* Removes the last occurrence of the specified element from this deque.
|
||||
* If the deque does not contain the element, it is unchanged.
|
||||
* More formally, removes the last element <tt>e</tt> such that
|
||||
* <tt>(o==null ? e==null : o.equals(e))</tt>
|
||||
* (if such an element exists).
|
||||
* Returns <tt>true</tt> if this deque contained the specified element
|
||||
* (or equivalently, if this deque changed as a result of the call).
|
||||
*
|
||||
* @param o element to be removed from this deque, if present
|
||||
* @return <tt>true</tt> if an element was removed as a result of this call
|
||||
* @throws ClassCastException if the class of the specified element
|
||||
* is incompatible with this deque (optional)
|
||||
* @throws NullPointerException if the specified element is null and this
|
||||
* deque does not permit null elements (optional)
|
||||
*/
|
||||
boolean removeLastOccurrence(Object o);
|
||||
|
||||
// *** Queue methods ***
|
||||
|
||||
/**
|
||||
* Inserts the specified element into the queue represented by this deque
|
||||
* (in other words, at the tail of this deque) if it is possible to do so
|
||||
* immediately without violating capacity restrictions, returning
|
||||
* <tt>true</tt> upon success and throwing an
|
||||
* <tt>IllegalStateException</tt> if no space is currently available.
|
||||
* When using a capacity-restricted deque, it is generally preferable to
|
||||
* use {@link #offer offer}.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #addLast}.
|
||||
*
|
||||
* @param e the element to add
|
||||
* @return <tt>true</tt> (as specified by {@link Collection#add})
|
||||
* @throws IllegalStateException if the element cannot be added at this
|
||||
* time due to capacity restrictions
|
||||
* @throws ClassCastException if the class of the specified element
|
||||
* prevents it from being added to this deque
|
||||
* @throws NullPointerException if the specified element is null and this
|
||||
* deque does not permit null elements
|
||||
* @throws IllegalArgumentException if some property of the specified
|
||||
* element prevents it from being added to this deque
|
||||
*/
|
||||
boolean add(E e);
|
||||
|
||||
/**
|
||||
* Inserts the specified element into the queue represented by this deque
|
||||
* (in other words, at the tail of this deque) if it is possible to do so
|
||||
* immediately without violating capacity restrictions, returning
|
||||
* <tt>true</tt> upon success and <tt>false</tt> if no space is currently
|
||||
* available. When using a capacity-restricted deque, this method is
|
||||
* generally preferable to the {@link #add} method, which can fail to
|
||||
* insert an element only by throwing an exception.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #offerLast}.
|
||||
*
|
||||
* @param e the element to add
|
||||
* @return <tt>true</tt> if the element was added to this deque, else
|
||||
* <tt>false</tt>
|
||||
* @throws ClassCastException if the class of the specified element
|
||||
* prevents it from being added to this deque
|
||||
* @throws NullPointerException if the specified element is null and this
|
||||
* deque does not permit null elements
|
||||
* @throws IllegalArgumentException if some property of the specified
|
||||
* element prevents it from being added to this deque
|
||||
*/
|
||||
boolean offer(E e);
|
||||
|
||||
/**
|
||||
* Retrieves and removes the head of the queue represented by this deque
|
||||
* (in other words, the first element of this deque).
|
||||
* This method differs from {@link #poll poll} only in that it throws an
|
||||
* exception if this deque is empty.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #removeFirst()}.
|
||||
*
|
||||
* @return the head of the queue represented by this deque
|
||||
* @throws NoSuchElementException if this deque is empty
|
||||
*/
|
||||
E remove();
|
||||
|
||||
/**
|
||||
* Retrieves and removes the head of the queue represented by this deque
|
||||
* (in other words, the first element of this deque), or returns
|
||||
* <tt>null</tt> if this deque is empty.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #pollFirst()}.
|
||||
*
|
||||
* @return the first element of this deque, or <tt>null</tt> if
|
||||
* this deque is empty
|
||||
*/
|
||||
E poll();
|
||||
|
||||
/**
|
||||
* Retrieves, but does not remove, the head of the queue represented by
|
||||
* this deque (in other words, the first element of this deque).
|
||||
* This method differs from {@link #peek peek} only in that it throws an
|
||||
* exception if this deque is empty.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #getFirst()}.
|
||||
*
|
||||
* @return the head of the queue represented by this deque
|
||||
* @throws NoSuchElementException if this deque is empty
|
||||
*/
|
||||
E element();
|
||||
|
||||
/**
|
||||
* Retrieves, but does not remove, the head of the queue represented by
|
||||
* this deque (in other words, the first element of this deque), or
|
||||
* returns <tt>null</tt> if this deque is empty.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #peekFirst()}.
|
||||
*
|
||||
* @return the head of the queue represented by this deque, or
|
||||
* <tt>null</tt> if this deque is empty
|
||||
*/
|
||||
E peek();
|
||||
|
||||
|
||||
// *** Stack methods ***
|
||||
|
||||
/**
|
||||
* Pushes an element onto the stack represented by this deque (in other
|
||||
* words, at the head of this deque) if it is possible to do so
|
||||
* immediately without violating capacity restrictions, returning
|
||||
* <tt>true</tt> upon success and throwing an
|
||||
* <tt>IllegalStateException</tt> if no space is currently available.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #addFirst}.
|
||||
*
|
||||
* @param e the element to push
|
||||
* @throws IllegalStateException if the element cannot be added at this
|
||||
* time due to capacity restrictions
|
||||
* @throws ClassCastException if the class of the specified element
|
||||
* prevents it from being added to this deque
|
||||
* @throws NullPointerException if the specified element is null and this
|
||||
* deque does not permit null elements
|
||||
* @throws IllegalArgumentException if some property of the specified
|
||||
* element prevents it from being added to this deque
|
||||
*/
|
||||
void push(E e);
|
||||
|
||||
/**
|
||||
* Pops an element from the stack represented by this deque. In other
|
||||
* words, removes and returns the first element of this deque.
|
||||
*
|
||||
* <p>This method is equivalent to {@link #removeFirst()}.
|
||||
*
|
||||
* @return the element at the front of this deque (which is the top
|
||||
* of the stack represented by this deque)
|
||||
* @throws NoSuchElementException if this deque is empty
|
||||
*/
|
||||
E pop();
|
||||
|
||||
|
||||
// *** Collection methods ***
|
||||
|
||||
/**
|
||||
* Removes the first occurrence of the specified element from this deque.
|
||||
* If the deque does not contain the element, it is unchanged.
|
||||
* More formally, removes the first element <tt>e</tt> such that
|
||||
* <tt>(o==null ? e==null : o.equals(e))</tt>
|
||||
* (if such an element exists).
|
||||
* Returns <tt>true</tt> if this deque contained the specified element
|
||||
* (or equivalently, if this deque changed as a result of the call).
|
||||
*
|
||||
* <p>This method is equivalent to {@link #removeFirstOccurrence}.
|
||||
*
|
||||
* @param o element to be removed from this deque, if present
|
||||
* @return <tt>true</tt> if an element was removed as a result of this call
|
||||
* @throws ClassCastException if the class of the specified element
|
||||
* is incompatible with this deque (optional)
|
||||
* @throws NullPointerException if the specified element is null and this
|
||||
* deque does not permit null elements (optional)
|
||||
*/
|
||||
boolean remove(Object o);
|
||||
|
||||
/**
|
||||
* Returns <tt>true</tt> if this deque contains the specified element.
|
||||
* More formally, returns <tt>true</tt> if and only if this deque contains
|
||||
* at least one element <tt>e</tt> such that
|
||||
* <tt>(o==null ? e==null : o.equals(e))</tt>.
|
||||
*
|
||||
* @param o element whose presence in this deque is to be tested
|
||||
* @return <tt>true</tt> if this deque contains the specified element
|
||||
* @throws ClassCastException if the type of the specified element
|
||||
* is incompatible with this deque (optional)
|
||||
* @throws NullPointerException if the specified element is null and this
|
||||
* deque does not permit null elements (optional)
|
||||
*/
|
||||
boolean contains(Object o);
|
||||
|
||||
/**
|
||||
* Returns the number of elements in this deque.
|
||||
*
|
||||
* @return the number of elements in this deque
|
||||
*/
|
||||
public int size();
|
||||
|
||||
/**
|
||||
* Returns an iterator over the elements in this deque in proper sequence.
|
||||
* The elements will be returned in order from first (head) to last (tail).
|
||||
*
|
||||
* @return an iterator over the elements in this deque in proper sequence
|
||||
*/
|
||||
Iterator<E> iterator();
|
||||
|
||||
/**
|
||||
* Returns an iterator over the elements in this deque in reverse
|
||||
* sequential order. The elements will be returned in order from
|
||||
* last (tail) to first (head).
|
||||
*
|
||||
* @return an iterator over the elements in this deque in reverse
|
||||
* sequence
|
||||
*/
|
||||
Iterator<E> descendingIterator();
|
||||
|
||||
}
|
||||
@ -9,13 +9,12 @@
|
||||
* it here for backwards compatibility.
|
||||
*/
|
||||
|
||||
package org.thoughtcrime.securesms.util;
|
||||
package org.thoughtcrime.securesms.util.deque;
|
||||
|
||||
import java.util.AbstractQueue;
|
||||
import java.util.Collection;
|
||||
import java.util.Iterator;
|
||||
import java.util.NoSuchElementException;
|
||||
import java.util.concurrent.BlockingDeque;
|
||||
import java.util.concurrent.TimeUnit;
|
||||
import java.util.concurrent.locks.Condition;
|
||||
import java.util.concurrent.locks.ReentrantLock;
|
||||
Loading…
Reference in New Issue
Block a user