expiringmap.html

MINA+API 关于MINA的API

<a name="315" href="#315">315</a>                 <strong class="jxr_keyword">if</strong> (timeToLiveMillis &lt;= 0) {
<a name="316" href="#316">316</a>                     <strong class="jxr_keyword">continue</strong>;
<a name="317" href="#317">317</a>                 }
<a name="318" href="#318">318</a> 
<a name="319" href="#319">319</a>                 <strong class="jxr_keyword">long</strong> timeIdle = timeNow - o.getLastAccessTime();
<a name="320" href="#320">320</a> 
<a name="321" href="#321">321</a>                 <strong class="jxr_keyword">if</strong> (timeIdle &gt;= timeToLiveMillis) {
<a name="322" href="#322">322</a>                     delegate.remove(o.getKey());
<a name="323" href="#323">323</a> 
<a name="324" href="#324">324</a>                     <strong class="jxr_keyword">for</strong> (ExpirationListener&lt;V&gt; listener : expirationListeners) {
<a name="325" href="#325">325</a>                         listener.expired(o.getValue());
<a name="326" href="#326">326</a>                     }
<a name="327" href="#327">327</a>                 }
<a name="328" href="#328">328</a>             }
<a name="329" href="#329">329</a>         }
<a name="330" href="#330">330</a> 
<a name="331" href="#331">331</a>         <em class="jxr_javadoccomment">/**</em>
<a name="332" href="#332">332</a> <em class="jxr_javadoccomment">         * Kick off this thread which will look for old objects and remove them.</em>
<a name="333" href="#333">333</a> <em class="jxr_javadoccomment">         *</em>
<a name="334" href="#334">334</a> <em class="jxr_javadoccomment">         */</em>
<a name="335" href="#335">335</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> startExpiring() {
<a name="336" href="#336">336</a>             stateLock.writeLock().lock();
<a name="337" href="#337">337</a> 
<a name="338" href="#338">338</a>             <strong class="jxr_keyword">try</strong> {
<a name="339" href="#339">339</a>                 <strong class="jxr_keyword">if</strong> (!running) {
<a name="340" href="#340">340</a>                     running = <strong class="jxr_keyword">true</strong>;
<a name="341" href="#341">341</a>                     expirerThread.start();
<a name="342" href="#342">342</a>                 }
<a name="343" href="#343">343</a>             } <strong class="jxr_keyword">finally</strong> {
<a name="344" href="#344">344</a>                 stateLock.writeLock().unlock();
<a name="345" href="#345">345</a>             }
<a name="346" href="#346">346</a>         }
<a name="347" href="#347">347</a> 
<a name="348" href="#348">348</a>         <em class="jxr_javadoccomment">/**</em>
<a name="349" href="#349">349</a> <em class="jxr_javadoccomment">         * If this thread has not started, then start it.  </em>
<a name="350" href="#350">350</a> <em class="jxr_javadoccomment">         * Otherwise just return;</em>
<a name="351" href="#351">351</a> <em class="jxr_javadoccomment">         */</em>
<a name="352" href="#352">352</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> startExpiringIfNotStarted() {
<a name="353" href="#353">353</a>             stateLock.readLock().lock();
<a name="354" href="#354">354</a>             <strong class="jxr_keyword">try</strong> {
<a name="355" href="#355">355</a>                 <strong class="jxr_keyword">if</strong> (running) {
<a name="356" href="#356">356</a>                     <strong class="jxr_keyword">return</strong>;
<a name="357" href="#357">357</a>                 }
<a name="358" href="#358">358</a>             } <strong class="jxr_keyword">finally</strong> {
<a name="359" href="#359">359</a>                 stateLock.readLock().unlock();
<a name="360" href="#360">360</a>             }
<a name="361" href="#361">361</a> 
<a name="362" href="#362">362</a>             stateLock.writeLock().lock();
<a name="363" href="#363">363</a>             <strong class="jxr_keyword">try</strong> {
<a name="364" href="#364">364</a>                 <strong class="jxr_keyword">if</strong> (!running) {
<a name="365" href="#365">365</a>                     running = <strong class="jxr_keyword">true</strong>;
<a name="366" href="#366">366</a>                     expirerThread.start();
<a name="367" href="#367">367</a>                 }
<a name="368" href="#368">368</a>             } <strong class="jxr_keyword">finally</strong> {
<a name="369" href="#369">369</a>                 stateLock.writeLock().unlock();
<a name="370" href="#370">370</a>             }
<a name="371" href="#371">371</a>         }
<a name="372" href="#372">372</a> 
<a name="373" href="#373">373</a>         <em class="jxr_javadoccomment">/**</em>
<a name="374" href="#374">374</a> <em class="jxr_javadoccomment">         * Stop the thread from monitoring the map.</em>
<a name="375" href="#375">375</a> <em class="jxr_javadoccomment">         */</em>
<a name="376" href="#376">376</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> stopExpiring() {
<a name="377" href="#377">377</a>             stateLock.writeLock().lock();
<a name="378" href="#378">378</a> 
<a name="379" href="#379">379</a>             <strong class="jxr_keyword">try</strong> {
<a name="380" href="#380">380</a>                 <strong class="jxr_keyword">if</strong> (running) {
<a name="381" href="#381">381</a>                     running = false;
<a name="382" href="#382">382</a>                     expirerThread.interrupt();
<a name="383" href="#383">383</a>                 }
<a name="384" href="#384">384</a>             } <strong class="jxr_keyword">finally</strong> {
<a name="385" href="#385">385</a>                 stateLock.writeLock().unlock();
<a name="386" href="#386">386</a>             }
<a name="387" href="#387">387</a>         }
<a name="388" href="#388">388</a> 
<a name="389" href="#389">389</a>         <em class="jxr_javadoccomment">/**</em>
<a name="390" href="#390">390</a> <em class="jxr_javadoccomment">         * Checks to see if the thread is running</em>
<a name="391" href="#391">391</a> <em class="jxr_javadoccomment">         *</em>
<a name="392" href="#392">392</a> <em class="jxr_javadoccomment">         * @return</em>
<a name="393" href="#393">393</a> <em class="jxr_javadoccomment">         *  If the thread is running, true.  Otherwise false.</em>
<a name="394" href="#394">394</a> <em class="jxr_javadoccomment">         */</em>
<a name="395" href="#395">395</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isRunning() {
<a name="396" href="#396">396</a>             stateLock.readLock().lock();
<a name="397" href="#397">397</a> 
<a name="398" href="#398">398</a>             <strong class="jxr_keyword">try</strong> {
<a name="399" href="#399">399</a>                 <strong class="jxr_keyword">return</strong> running;
<a name="400" href="#400">400</a>             } <strong class="jxr_keyword">finally</strong> {
<a name="401" href="#401">401</a>                 stateLock.readLock().unlock();
<a name="402" href="#402">402</a>             }
<a name="403" href="#403">403</a>         }
<a name="404" href="#404">404</a> 
<a name="405" href="#405">405</a>         <em class="jxr_javadoccomment">/**</em>
<a name="406" href="#406">406</a> <em class="jxr_javadoccomment">         * Returns the Time-to-live value.</em>
<a name="407" href="#407">407</a> <em class="jxr_javadoccomment">         *</em>
<a name="408" href="#408">408</a> <em class="jxr_javadoccomment">         * @return</em>
<a name="409" href="#409">409</a> <em class="jxr_javadoccomment">         *  The time-to-live (seconds)</em>
<a name="410" href="#410">410</a> <em class="jxr_javadoccomment">         */</em>
<a name="411" href="#411">411</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getTimeToLive() {
<a name="412" href="#412">412</a>             stateLock.readLock().lock();
<a name="413" href="#413">413</a> 
<a name="414" href="#414">414</a>             <strong class="jxr_keyword">try</strong> {
<a name="415" href="#415">415</a>                 <strong class="jxr_keyword">return</strong> (<strong class="jxr_keyword">int</strong>) timeToLiveMillis / 1000;
<a name="416" href="#416">416</a>             } <strong class="jxr_keyword">finally</strong> {
<a name="417" href="#417">417</a>                 stateLock.readLock().unlock();
<a name="418" href="#418">418</a>             }
<a name="419" href="#419">419</a>         }
<a name="420" href="#420">420</a> 
<a name="421" href="#421">421</a>         <em class="jxr_javadoccomment">/**</em>
<a name="422" href="#422">422</a> <em class="jxr_javadoccomment">         * Update the value for the time-to-live</em>
<a name="423" href="#423">423</a> <em class="jxr_javadoccomment">         *</em>
<a name="424" href="#424">424</a> <em class="jxr_javadoccomment">         * @param timeToLive</em>
<a name="425" href="#425">425</a> <em class="jxr_javadoccomment">         *  The time-to-live (seconds)</em>
<a name="426" href="#426">426</a> <em class="jxr_javadoccomment">         */</em>
<a name="427" href="#427">427</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setTimeToLive(<strong class="jxr_keyword">long</strong> timeToLive) {
<a name="428" href="#428">428</a>             stateLock.writeLock().lock();
<a name="429" href="#429">429</a> 
<a name="430" href="#430">430</a>             <strong class="jxr_keyword">try</strong> {
<a name="431" href="#431">431</a>                 <strong class="jxr_keyword">this</strong>.timeToLiveMillis = timeToLive * 1000;
<a name="432" href="#432">432</a>             } <strong class="jxr_keyword">finally</strong> {
<a name="433" href="#433">433</a>                 stateLock.writeLock().unlock();
<a name="434" href="#434">434</a>             }
<a name="435" href="#435">435</a>         }
<a name="436" href="#436">436</a> 
<a name="437" href="#437">437</a>         <em class="jxr_javadoccomment">/**</em>
<a name="438" href="#438">438</a> <em class="jxr_javadoccomment">         * Get the interval in which an object will live in the map before</em>
<a name="439" href="#439">439</a> <em class="jxr_javadoccomment">         * it is removed.</em>
<a name="440" href="#440">440</a> <em class="jxr_javadoccomment">         *</em>
<a name="441" href="#441">441</a> <em class="jxr_javadoccomment">         * @return</em>
<a name="442" href="#442">442</a> <em class="jxr_javadoccomment">         *  The time in seconds.</em>
<a name="443" href="#443">443</a> <em class="jxr_javadoccomment">         */</em>
<a name="444" href="#444">444</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getExpirationInterval() {
<a name="445" href="#445">445</a>             stateLock.readLock().lock();
<a name="446" href="#446">446</a> 
<a name="447" href="#447">447</a>             <strong class="jxr_keyword">try</strong> {
<a name="448" href="#448">448</a>                 <strong class="jxr_keyword">return</strong> (<strong class="jxr_keyword">int</strong>) expirationIntervalMillis / 1000;
<a name="449" href="#449">449</a>             } <strong class="jxr_keyword">finally</strong> {
<a name="450" href="#450">450</a>                 stateLock.readLock().unlock();
<a name="451" href="#451">451</a>             }
<a name="452" href="#452">452</a>         }
<a name="453" href="#453">453</a> 
<a name="454" href="#454">454</a>         <em class="jxr_javadoccomment">/**</em>
<a name="455" href="#455">455</a> <em class="jxr_javadoccomment">         * Set the interval in which an object will live in the map before</em>
<a name="456" href="#456">456</a> <em class="jxr_javadoccomment">         * it is removed.</em>
<a name="457" href="#457">457</a> <em class="jxr_javadoccomment">         *</em>
<a name="458" href="#458">458</a> <em class="jxr_javadoccomment">         * @param expirationInterval</em>
<a name="459" href="#459">459</a> <em class="jxr_javadoccomment">         *  The time in seconds</em>
<a name="460" href="#460">460</a> <em class="jxr_javadoccomment">         */</em>
<a name="461" href="#461">461</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setExpirationInterval(<strong class="jxr_keyword">long</strong> expirationInterval) {
<a name="462" href="#462">462</a>             stateLock.writeLock().lock();
<a name="463" href="#463">463</a> 
<a name="464" href="#464">464</a>             <strong class="jxr_keyword">try</strong> {
<a name="465" href="#465">465</a>                 <strong class="jxr_keyword">this</strong>.expirationIntervalMillis = expirationInterval * 1000;
<a name="466" href="#466">466</a>             } <strong class="jxr_keyword">finally</strong> {
<a name="467" href="#467">467</a>                 stateLock.writeLock().unlock();
<a name="468" href="#468">468</a>             }
<a name="469" href="#469">469</a>         }
<a name="470" href="#470">470</a>     }
<a name="471" href="#471">471</a> }
</pre>
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