abstractpollingconnectionlessioacceptor.html

MINA+API 关于MINA的API

<a name="287" href="#287">287</a> 
<a name="288" href="#288">288</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> dispose() {
<a name="289" href="#289">289</a>         }
<a name="290" href="#290">290</a> 
<a name="291" href="#291">291</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isDisposed() {
<a name="292" href="#292">292</a>             <strong class="jxr_keyword">return</strong> false;
<a name="293" href="#293">293</a>         }
<a name="294" href="#294">294</a> 
<a name="295" href="#295">295</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isDisposing() {
<a name="296" href="#296">296</a>             <strong class="jxr_keyword">return</strong> false;
<a name="297" href="#297">297</a>         }
<a name="298" href="#298">298</a>     }
<a name="299" href="#299">299</a> 
<a name="300" href="#300">300</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> startupWorker() {
<a name="301" href="#301">301</a>         <strong class="jxr_keyword">if</strong> (!selectable) {
<a name="302" href="#302">302</a>             registerQueue.clear();
<a name="303" href="#303">303</a>             cancelQueue.clear();
<a name="304" href="#304">304</a>             flushingSessions.clear();
<a name="305" href="#305">305</a>         }
<a name="306" href="#306">306</a>         
<a name="307" href="#307">307</a>         <strong class="jxr_keyword">synchronized</strong> (lock) {
<a name="308" href="#308">308</a>             <strong class="jxr_keyword">if</strong> (worker == <strong class="jxr_keyword">null</strong>) {
<a name="309" href="#309">309</a>                 worker = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/mina/common/AbstractPollingConnectionlessIoAcceptor.html">Worker</a>();
<a name="310" href="#310">310</a>                 executor.execute(
<a name="311" href="#311">311</a>                         <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/mina/util/NamePreservingRunnable.html">NamePreservingRunnable</a>(worker, threadName));
<a name="312" href="#312">312</a>             }
<a name="313" href="#313">313</a>         }
<a name="314" href="#314">314</a>     }
<a name="315" href="#315">315</a> 
<a name="316" href="#316">316</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> scheduleFlush(T session) {
<a name="317" href="#317">317</a>         <strong class="jxr_keyword">if</strong> (session.setScheduledForFlush(<strong class="jxr_keyword">true</strong>)) {
<a name="318" href="#318">318</a>             flushingSessions.add(session);
<a name="319" href="#319">319</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a name="320" href="#320">320</a>         } <strong class="jxr_keyword">else</strong> {
<a name="321" href="#321">321</a>             <strong class="jxr_keyword">return</strong> false;
<a name="322" href="#322">322</a>         }
<a name="323" href="#323">323</a>     }
<a name="324" href="#324">324</a> 
<a name="325" href="#325">325</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/mina/common/AbstractPollingConnectionlessIoAcceptor.html">Worker</a> implements Runnable {
<a name="326" href="#326">326</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> run() {
<a name="327" href="#327">327</a>             <strong class="jxr_keyword">int</strong> nHandles = 0;
<a name="328" href="#328">328</a>             lastIdleCheckTime = System.currentTimeMillis();
<a name="329" href="#329">329</a> 
<a name="330" href="#330">330</a>             <strong class="jxr_keyword">while</strong> (selectable) {
<a name="331" href="#331">331</a>                 <strong class="jxr_keyword">try</strong> {
<a name="332" href="#332">332</a>                     <strong class="jxr_keyword">boolean</strong> selected = select(1000);
<a name="333" href="#333">333</a> 
<a name="334" href="#334">334</a>                     nHandles += registerHandles();
<a name="335" href="#335">335</a> 
<a name="336" href="#336">336</a>                     <strong class="jxr_keyword">if</strong> (selected) {
<a name="337" href="#337">337</a>                         processReadySessions(selectedHandles());
<a name="338" href="#338">338</a>                     }
<a name="339" href="#339">339</a> 
<a name="340" href="#340">340</a>                     flushSessions();
<a name="341" href="#341">341</a>                     nHandles -= unregisterHandles();
<a name="342" href="#342">342</a> 
<a name="343" href="#343">343</a>                     notifyIdleSessions();
<a name="344" href="#344">344</a> 
<a name="345" href="#345">345</a>                     <strong class="jxr_keyword">if</strong> (nHandles == 0) {
<a name="346" href="#346">346</a>                         <strong class="jxr_keyword">synchronized</strong> (lock) {
<a name="347" href="#347">347</a>                             <strong class="jxr_keyword">if</strong> (registerQueue.isEmpty() &amp;&amp; cancelQueue.isEmpty()) {
<a name="348" href="#348">348</a>                                 worker = <strong class="jxr_keyword">null</strong>;
<a name="349" href="#349">349</a>                                 <strong class="jxr_keyword">break</strong>;
<a name="350" href="#350">350</a>                             }
<a name="351" href="#351">351</a>                         }
<a name="352" href="#352">352</a>                     }
<a name="353" href="#353">353</a>                 } <strong class="jxr_keyword">catch</strong> (Exception e) {
<a name="354" href="#354">354</a>                     ExceptionMonitor.getInstance().exceptionCaught(e);
<a name="355" href="#355">355</a> 
<a name="356" href="#356">356</a>                     <strong class="jxr_keyword">try</strong> {
<a name="357" href="#357">357</a>                         Thread.sleep(1000);
<a name="358" href="#358">358</a>                     } <strong class="jxr_keyword">catch</strong> (InterruptedException e1) {
<a name="359" href="#359">359</a>                     }
<a name="360" href="#360">360</a>                 }
<a name="361" href="#361">361</a>             }
<a name="362" href="#362">362</a>             
<a name="363" href="#363">363</a>             <strong class="jxr_keyword">if</strong> (selectable &amp;&amp; isDisposing()) {
<a name="364" href="#364">364</a>                 selectable = false;
<a name="365" href="#365">365</a>                 <strong class="jxr_keyword">try</strong> {
<a name="366" href="#366">366</a>                     destroy();
<a name="367" href="#367">367</a>                 } <strong class="jxr_keyword">catch</strong> (Exception e) {
<a name="368" href="#368">368</a>                     ExceptionMonitor.getInstance().exceptionCaught(e);
<a name="369" href="#369">369</a>                 } <strong class="jxr_keyword">finally</strong> {
<a name="370" href="#370">370</a>                     disposalFuture.setValue(<strong class="jxr_keyword">true</strong>);
<a name="371" href="#371">371</a>                     <strong class="jxr_keyword">if</strong> (createdExecutor) {
<a name="372" href="#372">372</a>                         ((ExecutorService) executor).shutdown();
<a name="373" href="#373">373</a>                     }
<a name="374" href="#374">374</a>                 }
<a name="375" href="#375">375</a>             }
<a name="376" href="#376">376</a>         }
<a name="377" href="#377">377</a>     }
<a name="378" href="#378">378</a> 
<a name="379" href="#379">379</a>     @SuppressWarnings(<span class="jxr_string">"unchecked"</span>)
<a name="380" href="#380">380</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> processReadySessions(Iterator&lt;H&gt; handles) {
<a name="381" href="#381">381</a>         <strong class="jxr_keyword">while</strong> (handles.hasNext()) {
<a name="382" href="#382">382</a>             H h = handles.next();
<a name="383" href="#383">383</a>             handles.remove();
<a name="384" href="#384">384</a>             <strong class="jxr_keyword">try</strong> {
<a name="385" href="#385">385</a>                 <strong class="jxr_keyword">if</strong> (isReadable(h)) {
<a name="386" href="#386">386</a>                     readHandle(h);
<a name="387" href="#387">387</a>                 }
<a name="388" href="#388">388</a> 
<a name="389" href="#389">389</a>                 <strong class="jxr_keyword">if</strong> (isWritable(h)) {
<a name="390" href="#390">390</a>                     <strong class="jxr_keyword">for</strong> (IoSession session : getManagedSessions()) {
<a name="391" href="#391">391</a>                         scheduleFlush((T) session);
<a name="392" href="#392">392</a>                     }
<a name="393" href="#393">393</a>                 }
<a name="394" href="#394">394</a>             } <strong class="jxr_keyword">catch</strong> (Throwable t) {
<a name="395" href="#395">395</a>                 ExceptionMonitor.getInstance().exceptionCaught(t);
<a name="396" href="#396">396</a>             }
<a name="397" href="#397">397</a>         }
<a name="398" href="#398">398</a>     }
<a name="399" href="#399">399</a> 
<a name="400" href="#400">400</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> readHandle(H handle) <strong class="jxr_keyword">throws</strong> Exception {
<a name="401" href="#401">401</a>         <a href="../../../../org/apache/mina/common/IoBuffer.html">IoBuffer</a> readBuf = IoBuffer.allocate(
<a name="402" href="#402">402</a>                 getSessionConfig().getReadBufferSize());
<a name="403" href="#403">403</a> 
<a name="404" href="#404">404</a>         SocketAddress remoteAddress = receive(handle, readBuf);
<a name="405" href="#405">405</a>         <strong class="jxr_keyword">if</strong> (remoteAddress != <strong class="jxr_keyword">null</strong>) {
<a name="406" href="#406">406</a>             <a href="../../../../org/apache/mina/common/IoSession.html">IoSession</a> session = newSessionWithoutLock(
<a name="407" href="#407">407</a>                     remoteAddress, localAddress(handle));
<a name="408" href="#408">408</a> 
<a name="409" href="#409">409</a>             readBuf.flip();
<a name="410" href="#410">410</a> 
<a name="411" href="#411">411</a>             <a href="../../../../org/apache/mina/common/IoBuffer.html">IoBuffer</a> newBuf = IoBuffer.allocate(readBuf.limit());
<a name="412" href="#412">412</a>             newBuf.put(readBuf);
<a name="413" href="#413">413</a>             newBuf.flip();
<a name="414" href="#414">414</a> 
<a name="415" href="#415">415</a>             session.getFilterChain().fireMessageReceived(newBuf);
<a name="416" href="#416">416</a>         }
<a name="417" href="#417">417</a>     }
<a name="418" href="#418">418</a> 
<a name="419" href="#419">419</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> flushSessions() {
<a name="420" href="#420">420</a>         <strong class="jxr_keyword">for</strong> (; ;) {
<a name="421" href="#421">421</a>             T session = flushingSessions.poll();
<a name="422" href="#422">422</a>             <strong class="jxr_keyword">if</strong> (session == <strong class="jxr_keyword">null</strong>) {
<a name="423" href="#423">423</a>                 <strong class="jxr_keyword">break</strong>;
<a name="424" href="#424">424</a>             }
<a name="425" href="#425">425</a> 
<a name="426" href="#426">426</a>             session.setScheduledForFlush(false);
<a name="427" href="#427">427</a> 
<a name="428" href="#428">428</a>             <strong class="jxr_keyword">try</strong> {
<a name="429" href="#429">429</a>                 <strong class="jxr_keyword">boolean</strong> flushedAll = flush(session);
<a name="430" href="#430">430</a>                 <strong class="jxr_keyword">if</strong> (flushedAll &amp;&amp; !session.getWriteRequestQueue().isEmpty(session) &amp;&amp;
<a name="431" href="#431">431</a>                     !session.isScheduledForFlush()) {
<a name="432" href="#432">432</a>                     scheduleFlush(session);
<a name="433" href="#433">433</a>                 }
<a name="434" href="#434">434</a>             } <strong class="jxr_keyword">catch</strong> (Exception e) {