profilertimerfilter.html

MINA+API 关于MINA的API

<a name="402" href="#402">402</a>         <em class="jxr_javadoccomment">/**</em>
<a name="403" href="#403">403</a> <em class="jxr_javadoccomment">         * Add a new reading to this class.  Total is updated</em>
<a name="404" href="#404">404</a> <em class="jxr_javadoccomment">         * and calls is incremented</em>
<a name="405" href="#405">405</a> <em class="jxr_javadoccomment">         *</em>
<a name="406" href="#406">406</a> <em class="jxr_javadoccomment">         * @param newReading</em>
<a name="407" href="#407">407</a> <em class="jxr_javadoccomment">         *  The new reading</em>
<a name="408" href="#408">408</a> <em class="jxr_javadoccomment">         */</em>
<a name="409" href="#409">409</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addNewReading(<strong class="jxr_keyword">long</strong> newReading) {
<a name="410" href="#410">410</a>             calls.incrementAndGet();
<a name="411" href="#411">411</a>             total.addAndGet(newReading);
<a name="412" href="#412">412</a> 
<a name="413" href="#413">413</a>             <strong class="jxr_keyword">synchronized</strong> (lock) {
<a name="414" href="#414">414</a>                 <em class="jxr_comment">// this is not entirely thread-safe, must lock</em>
<a name="415" href="#415">415</a>                 <strong class="jxr_keyword">if</strong> (newReading &lt; minimum.longValue()) {
<a name="416" href="#416">416</a>                     minimum.set(newReading);
<a name="417" href="#417">417</a>                 }
<a name="418" href="#418">418</a> 
<a name="419" href="#419">419</a>                 <em class="jxr_comment">// this is not entirely thread-safe, must lock</em>
<a name="420" href="#420">420</a>                 <strong class="jxr_keyword">if</strong> (newReading &gt; maximum.longValue()) {
<a name="421" href="#421">421</a>                     maximum.set(newReading);
<a name="422" href="#422">422</a>                 }
<a name="423" href="#423">423</a>             }
<a name="424" href="#424">424</a>         }
<a name="425" href="#425">425</a> 
<a name="426" href="#426">426</a>         <em class="jxr_javadoccomment">/**</em>
<a name="427" href="#427">427</a> <em class="jxr_javadoccomment">         * Gets the average reading for this event</em>
<a name="428" href="#428">428</a> <em class="jxr_javadoccomment">         *</em>
<a name="429" href="#429">429</a> <em class="jxr_javadoccomment">         * @return</em>
<a name="430" href="#430">430</a> <em class="jxr_javadoccomment">         *  Gets the average reading for this event</em>
<a name="431" href="#431">431</a> <em class="jxr_javadoccomment">         */</em>
<a name="432" href="#432">432</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">double</strong> getAverage() {
<a name="433" href="#433">433</a>             <strong class="jxr_keyword">return</strong> total.longValue() / calls.longValue();
<a name="434" href="#434">434</a>         }
<a name="435" href="#435">435</a> 
<a name="436" href="#436">436</a>         <em class="jxr_javadoccomment">/**</em>
<a name="437" href="#437">437</a> <em class="jxr_javadoccomment">         * Returns the total number of readings</em>
<a name="438" href="#438">438</a> <em class="jxr_javadoccomment">         *</em>
<a name="439" href="#439">439</a> <em class="jxr_javadoccomment">         * @return</em>
<a name="440" href="#440">440</a> <em class="jxr_javadoccomment">         *  total number of readings</em>
<a name="441" href="#441">441</a> <em class="jxr_javadoccomment">         */</em>
<a name="442" href="#442">442</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getCalls() {
<a name="443" href="#443">443</a>             <strong class="jxr_keyword">return</strong> calls.longValue();
<a name="444" href="#444">444</a>         }
<a name="445" href="#445">445</a> 
<a name="446" href="#446">446</a>         <em class="jxr_javadoccomment">/**</em>
<a name="447" href="#447">447</a> <em class="jxr_javadoccomment">         * Returns the total time</em>
<a name="448" href="#448">448</a> <em class="jxr_javadoccomment">         *</em>
<a name="449" href="#449">449</a> <em class="jxr_javadoccomment">         * @return</em>
<a name="450" href="#450">450</a> <em class="jxr_javadoccomment">         *  the total time</em>
<a name="451" href="#451">451</a> <em class="jxr_javadoccomment">         */</em>
<a name="452" href="#452">452</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getTotal() {
<a name="453" href="#453">453</a>             <strong class="jxr_keyword">return</strong> total.longValue();
<a name="454" href="#454">454</a>         }
<a name="455" href="#455">455</a> 
<a name="456" href="#456">456</a>         <em class="jxr_javadoccomment">/**</em>
<a name="457" href="#457">457</a> <em class="jxr_javadoccomment">         * Returns the minimum value</em>
<a name="458" href="#458">458</a> <em class="jxr_javadoccomment">         *</em>
<a name="459" href="#459">459</a> <em class="jxr_javadoccomment">         * @return</em>
<a name="460" href="#460">460</a> <em class="jxr_javadoccomment">         *  the minimum value</em>
<a name="461" href="#461">461</a> <em class="jxr_javadoccomment">         */</em>
<a name="462" href="#462">462</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getMinimum() {
<a name="463" href="#463">463</a>             <strong class="jxr_keyword">return</strong> minimum.longValue();
<a name="464" href="#464">464</a>         }
<a name="465" href="#465">465</a> 
<a name="466" href="#466">466</a>         <em class="jxr_javadoccomment">/**</em>
<a name="467" href="#467">467</a> <em class="jxr_javadoccomment">         * Returns the maximum value</em>
<a name="468" href="#468">468</a> <em class="jxr_javadoccomment">         *</em>
<a name="469" href="#469">469</a> <em class="jxr_javadoccomment">         * @return</em>
<a name="470" href="#470">470</a> <em class="jxr_javadoccomment">         *  the maximum value</em>
<a name="471" href="#471">471</a> <em class="jxr_javadoccomment">         */</em>
<a name="472" href="#472">472</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getMaximum() {
<a name="473" href="#473">473</a>             <strong class="jxr_keyword">return</strong> maximum.longValue();
<a name="474" href="#474">474</a>         }
<a name="475" href="#475">475</a>     }
<a name="476" href="#476">476</a> 
<a name="477" href="#477">477</a>     <strong class="jxr_keyword">private</strong> enum <a href="../../../../../org/apache/mina/filter/statistic/ProfilerTimerFilter.html">ProfilerTimerUnit</a> {
<a name="478" href="#478">478</a>         SECONDS {
<a name="479" href="#479">479</a>             @Override
<a name="480" href="#480">480</a>             <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> timeNow() {
<a name="481" href="#481">481</a>                 <strong class="jxr_keyword">return</strong> System.currentTimeMillis() / 1000;
<a name="482" href="#482">482</a>             }
<a name="483" href="#483">483</a> 
<a name="484" href="#484">484</a>             @Override
<a name="485" href="#485">485</a>             <strong class="jxr_keyword">public</strong> String getDescription() {
<a name="486" href="#486">486</a>                 <strong class="jxr_keyword">return</strong> <span class="jxr_string">"seconds"</span>;
<a name="487" href="#487">487</a>             }
<a name="488" href="#488">488</a>         },
<a name="489" href="#489">489</a>         MILLISECONDS {
<a name="490" href="#490">490</a>             @Override
<a name="491" href="#491">491</a>             <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> timeNow() {
<a name="492" href="#492">492</a>                 <strong class="jxr_keyword">return</strong> System.currentTimeMillis();
<a name="493" href="#493">493</a>             }
<a name="494" href="#494">494</a> 
<a name="495" href="#495">495</a>             @Override
<a name="496" href="#496">496</a>             <strong class="jxr_keyword">public</strong> String getDescription() {
<a name="497" href="#497">497</a>                 <strong class="jxr_keyword">return</strong> <span class="jxr_string">"milliseconds"</span>;
<a name="498" href="#498">498</a>             }
<a name="499" href="#499">499</a>         },
<a name="500" href="#500">500</a>         NANOSECONDS {
<a name="501" href="#501">501</a>             @Override
<a name="502" href="#502">502</a>             <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> timeNow() {
<a name="503" href="#503">503</a>                 <strong class="jxr_keyword">return</strong> System.nanoTime();
<a name="504" href="#504">504</a>             }
<a name="505" href="#505">505</a> 
<a name="506" href="#506">506</a>             @Override
<a name="507" href="#507">507</a>             <strong class="jxr_keyword">public</strong> String getDescription() {
<a name="508" href="#508">508</a>                 <strong class="jxr_keyword">return</strong> <span class="jxr_string">"nanoseconds"</span>;
<a name="509" href="#509">509</a>             }
<a name="510" href="#510">510</a>         };
<a name="511" href="#511">511</a> 
<a name="512" href="#512">512</a>         <em class="jxr_comment">/*</em>
<a name="513" href="#513">513</a> <em class="jxr_comment">         * I was looking at possibly using the java.util.concurrent.TimeUnit</em>
<a name="514" href="#514">514</a> <em class="jxr_comment">         * and I found this construct for writing enums.  Here is what the</em>
<a name="515" href="#515">515</a> <em class="jxr_comment">         * JDK developers say for why these methods below cannot be marked as</em>
<a name="516" href="#516">516</a> <em class="jxr_comment">         * abstract, but should act in an abstract way...</em>
<a name="517" href="#517">517</a> <em class="jxr_comment">         *</em>
<a name="518" href="#518">518</a> <em class="jxr_comment">         *     To maintain full signature compatibility with 1.5, and to improve the</em>
<a name="519" href="#519">519</a> <em class="jxr_comment">         *     clarity of the generated javadoc (see 6287639: Abstract methods in</em>
<a name="520" href="#520">520</a> <em class="jxr_comment">         *     enum classes should not be listed as abstract), method convert</em>
<a name="521" href="#521">521</a> <em class="jxr_comment">         *     etc. are not declared abstract but otherwise act as abstract methods.</em>
<a name="522" href="#522">522</a> <em class="jxr_comment">         */</em>
<a name="523" href="#523">523</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> timeNow() {
<a name="524" href="#524">524</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> AbstractMethodError();
<a name="525" href="#525">525</a>         }
<a name="526" href="#526">526</a> 
<a name="527" href="#527">527</a>         <strong class="jxr_keyword">public</strong> String getDescription() {
<a name="528" href="#528">528</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> AbstractMethodError();
<a name="529" href="#529">529</a>         }
<a name="530" href="#530">530</a>     }
<a name="531" href="#531">531</a> }
</pre>
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