abstractiobuffer.html

MINA+API 关于MINA的API

<a name="429" href="#429">429</a>         }
<a name="430" href="#430">430</a> 
<a name="431" href="#431">431</a>         <strong class="jxr_keyword">if</strong> (isAutoShrink() &amp;&amp; remaining &lt;= capacity &gt;&gt;&gt; 2 &amp;&amp; capacity &gt; minimumCapacity) {
<a name="432" href="#432">432</a>             <strong class="jxr_keyword">int</strong> newCapacity = capacity;
<a name="433" href="#433">433</a>             <strong class="jxr_keyword">int</strong> minCapacity = Math.max(minimumCapacity, remaining &lt;&lt; 1);
<a name="434" href="#434">434</a>             <strong class="jxr_keyword">for</strong> (;;) {
<a name="435" href="#435">435</a>                 <strong class="jxr_keyword">if</strong> (newCapacity &gt;&gt;&gt; 1 &lt; minCapacity) {
<a name="436" href="#436">436</a>                     <strong class="jxr_keyword">break</strong>;
<a name="437" href="#437">437</a>                 }
<a name="438" href="#438">438</a>                 newCapacity &gt;&gt;&gt;= 1;
<a name="439" href="#439">439</a>             }
<a name="440" href="#440">440</a>             
<a name="441" href="#441">441</a>             newCapacity = Math.max(minCapacity, newCapacity);
<a name="442" href="#442">442</a>             
<a name="443" href="#443">443</a>             <strong class="jxr_keyword">if</strong> (newCapacity == capacity) {
<a name="444" href="#444">444</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
<a name="445" href="#445">445</a>             }
<a name="446" href="#446">446</a> 
<a name="447" href="#447">447</a>             <em class="jxr_comment">// Shrink and compact:</em>
<a name="448" href="#448">448</a>             <em class="jxr_comment">//// Save the state.</em>
<a name="449" href="#449">449</a>             ByteOrder bo = order();
<a name="450" href="#450">450</a> 
<a name="451" href="#451">451</a>             <em class="jxr_comment">//// Sanity check.</em>
<a name="452" href="#452">452</a>             <strong class="jxr_keyword">if</strong> (remaining &gt; newCapacity) {
<a name="453" href="#453">453</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
<a name="454" href="#454">454</a>                         <span class="jxr_string">"The amount of the remaining bytes is greater than "</span> +
<a name="455" href="#455">455</a>                         <span class="jxr_string">"the new capacity."</span>);
<a name="456" href="#456">456</a>             }
<a name="457" href="#457">457</a> 
<a name="458" href="#458">458</a>             <em class="jxr_comment">//// Reallocate.</em>
<a name="459" href="#459">459</a>             ByteBuffer oldBuf = buf();
<a name="460" href="#460">460</a>             ByteBuffer newBuf = 
<a name="461" href="#461">461</a>                 allocator.allocateNioBuffer(newCapacity, isDirect());
<a name="462" href="#462">462</a>             newBuf.put(oldBuf);
<a name="463" href="#463">463</a>             buf(newBuf);
<a name="464" href="#464">464</a>             
<a name="465" href="#465">465</a>             <em class="jxr_comment">//// Restore the state.</em>
<a name="466" href="#466">466</a>             buf().order(bo);
<a name="467" href="#467">467</a>         } <strong class="jxr_keyword">else</strong> {
<a name="468" href="#468">468</a>             buf().compact();
<a name="469" href="#469">469</a>         }
<a name="470" href="#470">470</a>         mark = -1;
<a name="471" href="#471">471</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
<a name="472" href="#472">472</a>     }
<a name="473" href="#473">473</a> 
<a name="474" href="#474">474</a>     @Override
<a name="475" href="#475">475</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> ByteOrder order() {
<a name="476" href="#476">476</a>         <strong class="jxr_keyword">return</strong> buf().order();
<a name="477" href="#477">477</a>     }
<a name="478" href="#478">478</a> 
<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">final</strong> <a href="../../../../org/apache/mina/common/IoBuffer.html">IoBuffer</a> order(ByteOrder bo) {
<a name="481" href="#481">481</a>         buf().order(bo);
<a name="482" href="#482">482</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
<a name="483" href="#483">483</a>     }
<a name="484" href="#484">484</a> 
<a name="485" href="#485">485</a>     @Override
<a name="486" href="#486">486</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">char</strong> getChar() {
<a name="487" href="#487">487</a>         <strong class="jxr_keyword">return</strong> buf().getChar();
<a name="488" href="#488">488</a>     }
<a name="489" href="#489">489</a> 
<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">final</strong> <a href="../../../../org/apache/mina/common/IoBuffer.html">IoBuffer</a> putChar(<strong class="jxr_keyword">char</strong> value) {
<a name="492" href="#492">492</a>         autoExpand(2);
<a name="493" href="#493">493</a>         buf().putChar(value);
<a name="494" href="#494">494</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
<a name="495" href="#495">495</a>     }
<a name="496" href="#496">496</a> 
<a name="497" href="#497">497</a>     @Override
<a name="498" href="#498">498</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">char</strong> getChar(<strong class="jxr_keyword">int</strong> index) {
<a name="499" href="#499">499</a>         <strong class="jxr_keyword">return</strong> buf().getChar(index);
<a name="500" href="#500">500</a>     }
<a name="501" href="#501">501</a> 
<a name="502" href="#502">502</a>     @Override
<a name="503" href="#503">503</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../org/apache/mina/common/IoBuffer.html">IoBuffer</a> putChar(<strong class="jxr_keyword">int</strong> index, <strong class="jxr_keyword">char</strong> value) {
<a name="504" href="#504">504</a>         autoExpand(index, 2);
<a name="505" href="#505">505</a>         buf().putChar(index, value);
<a name="506" href="#506">506</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
<a name="507" href="#507">507</a>     }
<a name="508" href="#508">508</a> 
<a name="509" href="#509">509</a>     @Override
<a name="510" href="#510">510</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> CharBuffer asCharBuffer() {
<a name="511" href="#511">511</a>         <strong class="jxr_keyword">return</strong> buf().asCharBuffer();
<a name="512" href="#512">512</a>     }
<a name="513" href="#513">513</a> 
<a name="514" href="#514">514</a>     @Override
<a name="515" href="#515">515</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">short</strong> getShort() {
<a name="516" href="#516">516</a>         <strong class="jxr_keyword">return</strong> buf().getShort();
<a name="517" href="#517">517</a>     }
<a name="518" href="#518">518</a> 
<a name="519" href="#519">519</a>     @Override
<a name="520" href="#520">520</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../org/apache/mina/common/IoBuffer.html">IoBuffer</a> putShort(<strong class="jxr_keyword">short</strong> value) {
<a name="521" href="#521">521</a>         autoExpand(2);
<a name="522" href="#522">522</a>         buf().putShort(value);
<a name="523" href="#523">523</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
<a name="524" href="#524">524</a>     }
<a name="525" href="#525">525</a> 
<a name="526" href="#526">526</a>     @Override
<a name="527" href="#527">527</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">short</strong> getShort(<strong class="jxr_keyword">int</strong> index) {
<a name="528" href="#528">528</a>         <strong class="jxr_keyword">return</strong> buf().getShort(index);
<a name="529" href="#529">529</a>     }
<a name="530" href="#530">530</a> 
<a name="531" href="#531">531</a>     @Override
<a name="532" href="#532">532</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../org/apache/mina/common/IoBuffer.html">IoBuffer</a> putShort(<strong class="jxr_keyword">int</strong> index, <strong class="jxr_keyword">short</strong> value) {
<a name="533" href="#533">533</a>         autoExpand(index, 2);
<a name="534" href="#534">534</a>         buf().putShort(index, value);
<a name="535" href="#535">535</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
<a name="536" href="#536">536</a>     }
<a name="537" href="#537">537</a> 
<a name="538" href="#538">538</a>     @Override
<a name="539" href="#539">539</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> ShortBuffer asShortBuffer() {
<a name="540" href="#540">540</a>         <strong class="jxr_keyword">return</strong> buf().asShortBuffer();
<a name="541" href="#541">541</a>     }
<a name="542" href="#542">542</a> 
<a name="543" href="#543">543</a>     @Override
<a name="544" href="#544">544</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> getInt() {
<a name="545" href="#545">545</a>         <strong class="jxr_keyword">return</strong> buf().getInt();
<a name="546" href="#546">546</a>     }
<a name="547" href="#547">547</a> 
<a name="548" href="#548">548</a>     @Override
<a name="549" href="#549">549</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../org/apache/mina/common/IoBuffer.html">IoBuffer</a> putInt(<strong class="jxr_keyword">int</strong> value) {
<a name="550" href="#550">550</a>         autoExpand(4);
<a name="551" href="#551">551</a>         buf().putInt(value);
<a name="552" href="#552">552</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
<a name="553" href="#553">553</a>     }
<a name="554" href="#554">554</a> 
<a name="555" href="#555">555</a>     @Override
<a name="556" href="#556">556</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> getInt(<strong class="jxr_keyword">int</strong> index) {
<a name="557" href="#557">557</a>         <strong class="jxr_keyword">return</strong> buf().getInt(index);
<a name="558" href="#558">558</a>     }
<a name="559" href="#559">559</a> 
<a name="560" href="#560">560</a>     @Override
<a name="561" href="#561">561</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../org/apache/mina/common/IoBuffer.html">IoBuffer</a> putInt(<strong class="jxr_keyword">int</strong> index, <strong class="jxr_keyword">int</strong> value) {
<a name="562" href="#562">562</a>         autoExpand(index, 4);
<a name="563" href="#563">563</a>         buf().putInt(index, value);
<a name="564" href="#564">564</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
<a name="565" href="#565">565</a>     }
<a name="566" href="#566">566</a> 
<a name="567" href="#567">567</a>     @Override
<a name="568" href="#568">568</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> IntBuffer asIntBuffer() {
<a name="569" href="#569">569</a>         <strong class="jxr_keyword">return</strong> buf().asIntBuffer();
<a name="570" href="#570">570</a>     }
<a name="571" href="#571">571</a> 
<a name="572" href="#572">572</a>     @Override
<a name="573" href="#573">573</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> getLong() {
<a name="574" href="#574">574</a>         <strong class="jxr_keyword">return</strong> buf().getLong();