abstractpollingconnectionlessioacceptor.html

MINA+API 关于MINA的API

<a name="435" href="#435">435</a>                 session.getFilterChain().fireExceptionCaught(e);
<a name="436" href="#436">436</a>             }
<a name="437" href="#437">437</a>         }
<a name="438" href="#438">438</a>     }
<a name="439" href="#439">439</a> 
<a name="440" href="#440">440</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> flush(T session) <strong class="jxr_keyword">throws</strong> Exception {
<a name="441" href="#441">441</a>         <em class="jxr_comment">// Clear OP_WRITE</em>
<a name="442" href="#442">442</a>         setInterestedInWrite(session, false);
<a name="443" href="#443">443</a>         
<a name="444" href="#444">444</a>         <a href="../../../../org/apache/mina/common/WriteRequestQueue.html">WriteRequestQueue</a> writeRequestQueue = session.getWriteRequestQueue();
<a name="445" href="#445">445</a> 
<a name="446" href="#446">446</a>         <strong class="jxr_keyword">int</strong> maxWrittenBytes =
<a name="447" href="#447">447</a>             session.getConfig().getMaxReadBufferSize() +
<a name="448" href="#448">448</a>             (session.getConfig().getMaxReadBufferSize() &gt;&gt;&gt; 1);
<a name="449" href="#449">449</a> 
<a name="450" href="#450">450</a>         <strong class="jxr_keyword">int</strong> writtenBytes = 0;
<a name="451" href="#451">451</a>         <strong class="jxr_keyword">for</strong> (; ;) {
<a name="452" href="#452">452</a>             <a href="../../../../org/apache/mina/common/WriteRequest.html">WriteRequest</a> req = session.getCurrentWriteRequest();
<a name="453" href="#453">453</a>             <strong class="jxr_keyword">if</strong> (req == <strong class="jxr_keyword">null</strong>) {
<a name="454" href="#454">454</a>                 req = writeRequestQueue.poll(session);
<a name="455" href="#455">455</a>                 <strong class="jxr_keyword">if</strong> (req == <strong class="jxr_keyword">null</strong>) {
<a name="456" href="#456">456</a>                     <strong class="jxr_keyword">break</strong>;
<a name="457" href="#457">457</a>                 }
<a name="458" href="#458">458</a>                 session.setCurrentWriteRequest(req);
<a name="459" href="#459">459</a>             }
<a name="460" href="#460">460</a> 
<a name="461" href="#461">461</a>             <a href="../../../../org/apache/mina/common/IoBuffer.html">IoBuffer</a> buf = (IoBuffer) req.getMessage();
<a name="462" href="#462">462</a>             <strong class="jxr_keyword">if</strong> (buf.remaining() == 0) {
<a name="463" href="#463">463</a>                 <em class="jxr_comment">// Clear and fire event</em>
<a name="464" href="#464">464</a>                 session.setCurrentWriteRequest(<strong class="jxr_keyword">null</strong>);
<a name="465" href="#465">465</a>                 buf.reset();
<a name="466" href="#466">466</a>                 session.getFilterChain().fireMessageSent(req);
<a name="467" href="#467">467</a>                 <strong class="jxr_keyword">continue</strong>;
<a name="468" href="#468">468</a>             }
<a name="469" href="#469">469</a> 
<a name="470" href="#470">470</a>             SocketAddress destination = req.getDestination();
<a name="471" href="#471">471</a>             <strong class="jxr_keyword">if</strong> (destination == <strong class="jxr_keyword">null</strong>) {
<a name="472" href="#472">472</a>                 destination = session.getRemoteAddress();
<a name="473" href="#473">473</a>             }
<a name="474" href="#474">474</a> 
<a name="475" href="#475">475</a>             <strong class="jxr_keyword">int</strong> localWrittenBytes = send(session, buf, destination);
<a name="476" href="#476">476</a>             <strong class="jxr_keyword">if</strong> (localWrittenBytes == 0 || writtenBytes &gt;= maxWrittenBytes) {
<a name="477" href="#477">477</a>                 <em class="jxr_comment">// Kernel buffer is full or wrote too much</em>
<a name="478" href="#478">478</a>                 setInterestedInWrite(session, <strong class="jxr_keyword">true</strong>);
<a name="479" href="#479">479</a>                 <strong class="jxr_keyword">return</strong> false;
<a name="480" href="#480">480</a>             } <strong class="jxr_keyword">else</strong> {
<a name="481" href="#481">481</a>                 setInterestedInWrite(session, false);
<a name="482" href="#482">482</a> 
<a name="483" href="#483">483</a>                 <em class="jxr_comment">// Clear and fire event</em>
<a name="484" href="#484">484</a>                 session.setCurrentWriteRequest(<strong class="jxr_keyword">null</strong>);
<a name="485" href="#485">485</a>                 writtenBytes += localWrittenBytes;
<a name="486" href="#486">486</a>                 buf.reset();
<a name="487" href="#487">487</a>                 session.getFilterChain().fireMessageSent(req);
<a name="488" href="#488">488</a>             }
<a name="489" href="#489">489</a>         }
<a name="490" href="#490">490</a> 
<a name="491" href="#491">491</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a name="492" href="#492">492</a>     }
<a name="493" href="#493">493</a> 
<a name="494" href="#494">494</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> registerHandles() {
<a name="495" href="#495">495</a>         <strong class="jxr_keyword">for</strong> (;;) {
<a name="496" href="#496">496</a>             <a href="../../../../org/apache/mina/common/AbstractIoAcceptor.html">AcceptorOperationFuture</a> req = registerQueue.poll();
<a name="497" href="#497">497</a>             <strong class="jxr_keyword">if</strong> (req == <strong class="jxr_keyword">null</strong>) {
<a name="498" href="#498">498</a>                 <strong class="jxr_keyword">break</strong>;
<a name="499" href="#499">499</a>             }
<a name="500" href="#500">500</a> 
<a name="501" href="#501">501</a>             Map&lt;SocketAddress, H&gt; newHandles = <strong class="jxr_keyword">new</strong> HashMap&lt;SocketAddress, H&gt;();
<a name="502" href="#502">502</a>             List&lt;SocketAddress&gt; localAddresses = req.getLocalAddresses();
<a name="503" href="#503">503</a>             <strong class="jxr_keyword">try</strong> {
<a name="504" href="#504">504</a>                 <strong class="jxr_keyword">for</strong> (SocketAddress a: localAddresses) {
<a name="505" href="#505">505</a>                     H handle = open(a);
<a name="506" href="#506">506</a>                     newHandles.put(localAddress(handle), handle);
<a name="507" href="#507">507</a>                 }
<a name="508" href="#508">508</a>                 boundHandles.putAll(newHandles);
<a name="509" href="#509">509</a>                 
<a name="510" href="#510">510</a>                 getListeners().fireServiceActivated();
<a name="511" href="#511">511</a>                 req.setDone();
<a name="512" href="#512">512</a>                 <strong class="jxr_keyword">return</strong> newHandles.size();
<a name="513" href="#513">513</a>             } <strong class="jxr_keyword">catch</strong> (Exception e) {
<a name="514" href="#514">514</a>                 req.setException(e);
<a name="515" href="#515">515</a>             } <strong class="jxr_keyword">finally</strong> {
<a name="516" href="#516">516</a>                 <em class="jxr_comment">// Roll back if failed to bind all addresses.</em>
<a name="517" href="#517">517</a>                 <strong class="jxr_keyword">if</strong> (req.getException() != <strong class="jxr_keyword">null</strong>) {
<a name="518" href="#518">518</a>                     <strong class="jxr_keyword">for</strong> (H handle: newHandles.values()) {
<a name="519" href="#519">519</a>                         <strong class="jxr_keyword">try</strong> {
<a name="520" href="#520">520</a>                             close(handle);
<a name="521" href="#521">521</a>                         } <strong class="jxr_keyword">catch</strong> (Exception e) {
<a name="522" href="#522">522</a>                             ExceptionMonitor.getInstance().exceptionCaught(e);
<a name="523" href="#523">523</a>                         }
<a name="524" href="#524">524</a>                     }
<a name="525" href="#525">525</a>                     wakeup();
<a name="526" href="#526">526</a>                 }
<a name="527" href="#527">527</a>             }
<a name="528" href="#528">528</a>         }
<a name="529" href="#529">529</a>         
<a name="530" href="#530">530</a>         <strong class="jxr_keyword">return</strong> 0;
<a name="531" href="#531">531</a>     }
<a name="532" href="#532">532</a> 
<a name="533" href="#533">533</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> unregisterHandles() {
<a name="534" href="#534">534</a>         <strong class="jxr_keyword">int</strong> nHandles = 0;
<a name="535" href="#535">535</a>         <strong class="jxr_keyword">for</strong> (;;) {
<a name="536" href="#536">536</a>             <a href="../../../../org/apache/mina/common/AbstractIoAcceptor.html">AcceptorOperationFuture</a> request = cancelQueue.poll();
<a name="537" href="#537">537</a>             <strong class="jxr_keyword">if</strong> (request == <strong class="jxr_keyword">null</strong>) {
<a name="538" href="#538">538</a>                 <strong class="jxr_keyword">break</strong>;
<a name="539" href="#539">539</a>             }
<a name="540" href="#540">540</a> 
<a name="541" href="#541">541</a>             <em class="jxr_comment">// close the channels</em>
<a name="542" href="#542">542</a>             <strong class="jxr_keyword">for</strong> (SocketAddress a: request.getLocalAddresses()) {
<a name="543" href="#543">543</a>                 H handle = boundHandles.remove(a);
<a name="544" href="#544">544</a>                 <strong class="jxr_keyword">if</strong> (handle == <strong class="jxr_keyword">null</strong>) {
<a name="545" href="#545">545</a>                     <strong class="jxr_keyword">continue</strong>;
<a name="546" href="#546">546</a>                 }
<a name="547" href="#547">547</a> 
<a name="548" href="#548">548</a>                 <strong class="jxr_keyword">try</strong> {
<a name="549" href="#549">549</a>                     close(handle);
<a name="550" href="#550">550</a>                     wakeup(); <em class="jxr_comment">// wake up again to trigger thread death</em>
<a name="551" href="#551">551</a>                 } <strong class="jxr_keyword">catch</strong> (Throwable e) {
<a name="552" href="#552">552</a>                     ExceptionMonitor.getInstance().exceptionCaught(e);
<a name="553" href="#553">553</a>                 } <strong class="jxr_keyword">finally</strong> {
<a name="554" href="#554">554</a>                     nHandles ++;
<a name="555" href="#555">555</a>                 }
<a name="556" href="#556">556</a>             }
<a name="557" href="#557">557</a>             
<a name="558" href="#558">558</a>             request.setDone();
<a name="559" href="#559">559</a>         }
<a name="560" href="#560">560</a>         
<a name="561" href="#561">561</a>         <strong class="jxr_keyword">return</strong> nHandles;
<a name="562" href="#562">562</a>     }
<a name="563" href="#563">563</a> 
<a name="564" href="#564">564</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> notifyIdleSessions() {
<a name="565" href="#565">565</a>         <em class="jxr_comment">// process idle sessions</em>
<a name="566" href="#566">566</a>         <strong class="jxr_keyword">long</strong> currentTime = System.currentTimeMillis();
<a name="567" href="#567">567</a>         <strong class="jxr_keyword">if</strong> (currentTime - lastIdleCheckTime &gt;= 1000) {
<a name="568" href="#568">568</a>             lastIdleCheckTime = currentTime;
<a name="569" href="#569">569</a>             IdleStatusChecker.notifyIdleness(
<a name="570" href="#570">570</a>                     getListeners().getManagedSessions().iterator(),
<a name="571" href="#571">571</a>                     currentTime);
<a name="572" href="#572">572</a>         }
<a name="573" href="#573">573</a>     }
<a name="574" href="#574">574</a> }
</pre>
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