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package com.lxy.dialect;
public abstract interface Dialect {
public boolean supportLimit();
public String getLimitString(String sql,boolean hasoffset);
public String getLimitString(String sql,int offset,int limit);
}


package com.lxy.dialect;
public class MyDialect implements Dialect {
protected static final String SQL_END_DELIMITER = ";";
public String getLimitString(String sql, boolean hasoffset) {
return new StringBuffer(sql.length() + 20).append(trim(sql)).append(
hasoffset ? "limit ?,?" : "limit ?").append(SQL_END_DELIMITER)
.toString();
}
public String getLimitString(String sql, int offset, int limit) {
sql = trim(sql);
StringBuffer sb = new StringBuffer(sql.length() + 20);
sb.append(sql);
if (offset > 0) {
sb.append("limit").append(offset).append(',').append(limit).append(
";");
} else {
sb.append("limit").append(limit).append(";");
}
return sb.toString();
}
public boolean supportLimit() {
return true;
}
private String trim(String sql) {
sql = sql.trim();
if (sql.endsWith(";")) {
sql = sql.substring(0, sql.length() - 1 - ";".length());
}
return sql;
}
}


crazy-鏉庨槼 2011-09-14 19:11 鍙戣〃璇勮
]]>
綰跨▼姹犱唬鐮?/title><link>http://www.tkk7.com/crazy--liyang/archive/2011/09/02/357826.html</link><dc:creator>crazy-鏉庨槼</dc:creator><author>crazy-鏉庨槼</author><pubDate>Fri, 02 Sep 2011 07:20:00 GMT</pubDate><guid>http://www.tkk7.com/crazy--liyang/archive/2011/09/02/357826.html</guid><wfw:comment>http://www.tkk7.com/crazy--liyang/comments/357826.html</wfw:comment><comments>http://www.tkk7.com/crazy--liyang/archive/2011/09/02/357826.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/crazy--liyang/comments/commentRss/357826.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/crazy--liyang/services/trackbacks/357826.html</trackback:ping><description><![CDATA[<div><strong><span style="font-size: 14pt; color: red;">ThreadPoolManager</span><span style="font-size: 14pt;"><br /><br /></span></strong></div><div><strong>package com.threadpool.test;<br />import java.util.LinkedList;<br />import java.util.Queue;<br />import java.util.concurrent.ArrayBlockingQueue;<br />import java.util.concurrent.Executors;<br />import java.util.concurrent.RejectedExecutionException;<br />import java.util.concurrent.RejectedExecutionHandler;<br />import java.util.concurrent.ScheduledExecutorService;<br />import java.util.concurrent.ScheduledFuture;<br />import java.util.concurrent.ThreadPoolExecutor;<br />import java.util.concurrent.TimeUnit;<br /><br />import org.omg.CORBA.TIMEOUT;<br /><br />import com.nio.test.ReadFileThread;<br /><br />public class ThreadPoolManager {<br /><br />    private static ThreadPoolManager tpm = new ThreadPoolManager();<br /><br />    // 綰跨▼姹犳渶灝忕嚎紼嬫暟<br />    private final static int MIN_SIZE = 4;<br />    // 綰跨▼姹犳渶澶х嚎紼嬫暟<br />    private final static int MAX_SIZE = 10;<br />    // 綰跨▼姹犵淮鎶ょ嚎紼嬪厑璁哥殑絀洪棽闄愬埗<br />    private final static int KEEP_ACTIVE_TIME = 0;<br />    // 綰跨▼姹犵敤鐨勭紦鍐查槦鍒楀ぇ灝?br />    private final static int WORK_QUEUE_SIZE = 10;<br />    // 娑堟伅緙撳啿闃熷垪<br />    Queue queue = new LinkedList();<br />    <br />    final Runnable accessBuffeThread = new Runnable()<br />    {<br /><br />        public void run() {<br />            <br />            if( hasMoreAcquire() ){<br />                <br />                String msg = ( String ) queue.poll();<br />                Runnable task = new AccessDBThread( msg );<br />                threadpool.execute( task );<br />            }<br />        }<br />        <br />    };<br />    // 鏃犳硶鐢?ThreadPoolExecutor 鎵ц鐨勪換鍔$殑澶勭悊紼嬪簭<br />    final RejectedExecutionHandler handler = new RejectedExecutionHandler()<br />    {<br /><br />        public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {<br />            // TODO Auto-generated method stub<br />            System.out.println(((AccessDBThread )r).getMsg()+"娑堟伅鏀懼叆闃熷垪涓噸鏂扮瓑寰呮墽琛?);<br />            queue.offer((( AccessDBThread ) r ).getMsg() );<br />        }<br />        <br />    };<br />    <br />    final ThreadPoolExecutor threadpool = new ThreadPoolExecutor(MIN_SIZE, MAX_SIZE, KEEP_ACTIVE_TIME, TimeUnit.SECONDS, new ArrayBlockingQueue(WORK_QUEUE_SIZE),this.handler);<br />    <br />    // 璋冨害綰跨▼姹?br /><br />    final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool( 1 );<br /><br />    final ScheduledFuture taskHandler = scheduler.scheduleAtFixedRate(accessBuffeThread, 0, 1, TimeUnit.SECONDS);<br />    <br />    public static ThreadPoolManager newinstance()<br />    {<br />        return tpm;<br />    }<br />    <br />    private ThreadPoolManager (){}<br />    <br />    <br />    private boolean hasMoreAcquire()<br />    {<br />        return !queue.isEmpty();<br />    }<br />    <br />    public void addLogMsg(String msg)<br />    {<br />     Runnable task = new AccessDBThread(msg);<br />     threadpool.execute(task);<br />    }<br />}<br /></strong><div><strong><span style="font-size: 18pt; color: red;">AccessDBThread</span></strong></div><strong><div>package com.threadpool.test;<br /><br />public class AccessDBThread implements Runnable{<br /><br />    private String msg;<br />    public String getMsg() {<br />        return msg;<br />    }<br />    public void setMsg(String msg) {<br />        this.msg = msg;<br />    }<br />    <br />    public AccessDBThread(){<br />        super();<br />    }<br />    <br />    public AccessDBThread(String msg)<br />    {<br />        this.msg=msg;<br />    }<br />    public void run() {<br />        // TODO Auto-generated method stub<br />        System.out.println("Added the message: "+msg+" into the Database");<br />    }<br /><br />    <br />}<br /><br /><span style="color: red; font-size: 24pt;">嫻嬭瘯綾伙細(xì)</span><br /><div>package com.threadpool.test;<br /><br /><br />public class TestDriver {<br /><br />    ThreadPoolManager tpm = ThreadPoolManager.newinstance();<br />    <br />    public void addMsg(String msg)<br />    {<br />        tpm.addLogMsg(msg);<br />    }<br />    public static void main(String[] args) {<br />        for(int i=0;i<100;i++)<br />        {<br />            new TestDriver().addMsg(Integer.toString(i));<br />        }<br />    }<br />}<br /></div><br /></div><br /></strong></div><strong><br /></strong><img src ="http://www.tkk7.com/crazy--liyang/aggbug/357826.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/crazy--liyang/" target="_blank">crazy-鏉庨槼</a> 2011-09-02 15:20 <a href="http://www.tkk7.com/crazy--liyang/archive/2011/09/02/357826.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>綰跨▼姹?/title><link>http://www.tkk7.com/crazy--liyang/archive/2011/09/01/357725.html</link><dc:creator>crazy-鏉庨槼</dc:creator><author>crazy-鏉庨槼</author><pubDate>Thu, 01 Sep 2011 06:01:00 GMT</pubDate><guid>http://www.tkk7.com/crazy--liyang/archive/2011/09/01/357725.html</guid><wfw:comment>http://www.tkk7.com/crazy--liyang/comments/357725.html</wfw:comment><comments>http://www.tkk7.com/crazy--liyang/archive/2011/09/01/357725.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/crazy--liyang/comments/commentRss/357725.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/crazy--liyang/services/trackbacks/357725.html</trackback:ping><description><![CDATA[<div><p><strong><a name="1">涓轟粈涔堣鐢ㄧ嚎紼嬫睜錛?/a></strong></p> <p> 璇稿 Web 鏈嶅姟鍣ㄣ佹暟鎹簱鏈嶅姟鍣ㄣ佹枃浠舵湇鍔″櫒鎴栭偖浠舵湇鍔″櫒涔嬬被鐨勮澶氭湇鍔″櫒搴旂敤紼嬪簭閮介潰鍚戝鐞嗘潵鑷煇浜涜繙紼嬫潵婧愮殑澶ч噺鐭皬鐨勪換鍔°傝姹備互鏌愮鏂瑰紡鍒拌揪鏈嶅姟鍣紝榪欑鏂?寮忓彲鑳芥槸閫氳繃緗戠粶鍗忚錛堜緥濡?HTTP銆丗TP 鎴?POP錛夈侀氳繃 JMS 闃熷垪鎴栬呭彲鑳介氳繃杞鏁版嵁搴撱備笉綆¤姹傚浣曞埌杈撅紝鏈嶅姟鍣ㄥ簲鐢ㄧ▼搴忎腑緇忓父鍑虹幇鐨勬儏鍐墊槸錛氬崟涓換鍔″鐞嗙殑鏃墮棿寰堢煭鑰岃姹傜殑鏁扮洰鍗存槸宸ㄥぇ鐨勩?/p> <p> 鏋勫緩鏈嶅姟鍣ㄥ簲鐢ㄧ▼搴忕殑涓涓繃浜庣畝鍗曠殑妯″瀷搴旇鏄細(xì)姣忓綋涓涓姹傚埌杈懼氨鍒涘緩涓涓柊綰跨▼錛岀劧鍚庡湪鏂扮嚎紼嬩腑涓鴻姹傛湇鍔°傚疄闄呬笂錛屽浜庡師鍨嬪紑鍙戣繖縐嶆柟娉曞伐浣滃緱寰?濂斤紝浣嗗鏋滆瘯鍥鵑儴緗蹭互榪欑鏂瑰紡榪愯鐨勬湇鍔″櫒搴旂敤紼嬪簭錛岄偅涔堣繖縐嶆柟娉曠殑涓ラ噸涓嶈凍灝卞緢鏄庢樉銆傛瘡涓姹傚搴斾竴涓嚎紼嬶紙thread-per-request錛夋柟 娉曠殑涓嶈凍涔嬩竴鏄細(xì)涓烘瘡涓姹傚垱寤轟竴涓柊綰跨▼鐨勫紑閿寰堝ぇ錛涗負(fù)姣忎釜璇鋒眰鍒涘緩鏂扮嚎紼嬬殑鏈嶅姟鍣ㄥ湪鍒涘緩鍜岄攢姣佺嚎紼嬩笂鑺辮垂鐨勬椂闂村拰娑堣楃殑緋葷粺璧勬簮瑕佹瘮鑺卞湪澶勭悊瀹為檯鐨勭敤 鎴瘋姹傜殑鏃墮棿鍜岃祫婧愭洿澶氥?/p> <p> 闄や簡鍒涘緩鍜岄攢姣佺嚎紼嬬殑寮閿涔嬪錛屾椿鍔ㄧ殑綰跨▼涔熸秷鑰楃郴緇熻祫婧愩傚湪涓涓?JVM 閲屽垱寤哄お澶氱殑綰跨▼鍙兘浼?xì)瀵艰嚧绯痪l熺敱浜庤繃搴︽秷鑰楀唴瀛樿岀敤瀹屽唴瀛樻垨“鍒囨崲榪囧害”銆備負(fù)浜嗛槻姝㈣祫婧愪笉瓚籌紝鏈嶅姟鍣ㄥ簲鐢ㄧ▼搴忛渶瑕佷竴浜涘姙娉曟潵闄愬埗浠諱綍緇欏畾鏃跺埢澶勭悊鐨勮姹傛暟鐩?/p> <p> 綰跨▼姹犱負(fù)綰跨▼鐢熷懡鍛ㄦ湡寮閿闂鍜岃祫婧愪笉瓚抽棶棰樻彁渚涗簡瑙e喅鏂規(guī)銆傞氳繃瀵瑰涓換鍔¢噸鐢ㄧ嚎紼嬶紝綰跨▼鍒涘緩鐨勫紑閿琚垎鎽婂埌浜嗗涓換鍔′笂銆傚叾濂藉鏄紝鍥犱負(fù)鍦ㄨ姹傚埌杈炬椂 綰跨▼宸茬粡瀛樺湪錛屾墍浠ユ棤鎰忎腑涔熸秷闄や簡綰跨▼鍒涘緩鎵甯︽潵鐨勫歡榪熴傝繖鏍鳳紝灝卞彲浠ョ珛鍗充負(fù)璇鋒眰鏈嶅姟錛屼嬌搴旂敤紼嬪簭鍝嶅簲鏇村揩銆傝屼笖錛岄氳繃閫傚綋鍦拌皟鏁寸嚎紼嬫睜涓殑綰跨▼鏁扮洰錛屼篃 灝辨槸褰撹姹傜殑鏁扮洰瓚呰繃鏌愪釜闃堝兼椂錛屽氨寮哄埗鍏跺畠浠諱綍鏂板埌鐨勮姹備竴鐩寸瓑寰咃紝鐩村埌鑾峰緱涓涓嚎紼嬫潵澶勭悊涓烘錛屼粠鑰屽彲浠ラ槻姝㈣祫婧愪笉瓚熾?/p><p> </p><div><p><strong><a name="4">浣跨敤綰跨▼姹犵殑椋庨櫓</a></strong></p> <p> 铏界劧綰跨▼姹犳槸鏋勫緩澶氱嚎紼嬪簲鐢ㄧ▼搴忕殑寮哄ぇ鏈哄埗錛屼絾浣跨敤瀹冨茍涓嶆槸娌℃湁椋庨櫓鐨勩傜敤綰跨▼姹犳瀯寤虹殑搴旂敤紼嬪簭瀹規(guī)槗閬彈浠諱綍鍏跺畠澶氱嚎紼嬪簲鐢ㄧ▼搴忓鏄撻伃鍙楃殑鎵鏈夊茍鍙戦闄╋紝璇稿鍚屾閿欒鍜屾閿侊紝瀹冭繕瀹規(guī)槗閬彈鐗瑰畾浜庣嚎紼嬫睜鐨勫皯鏁板叾瀹冮闄╋紝璇稿涓庢睜鏈夊叧鐨勬閿併佽祫婧愪笉瓚沖拰綰跨▼娉勬紡銆?/p> <p><a name="N100CB">姝婚攣</a></p> <p> 浠諱綍澶氱嚎紼嬪簲鐢ㄧ▼搴忛兘鏈夋閿侀闄┿傚綋涓緇勮繘紼嬫垨綰跨▼涓殑姣忎竴涓兘鍦ㄧ瓑寰呬竴涓彧鏈夎緇勪腑鍙︿竴涓繘紼嬫墠鑳藉紩璧風(fēng)殑浜嬩歡鏃訛紝鎴戜滑灝辮榪欑粍榪涚▼鎴栫嚎紼? <em>姝婚攣</em>浜嗐傛閿佺殑鏈綆鍗曟儏褰㈡槸錛氱嚎紼?A 鎸佹湁瀵硅薄 X 鐨勭嫭鍗犻攣錛屽茍涓斿湪絳夊緟瀵硅薄 Y 鐨勯攣錛岃岀嚎紼?B 鎸佹湁瀵硅薄 Y 鐨勭嫭鍗犻攣錛屽嵈鍦ㄧ瓑寰呭璞?X 鐨勯攣銆傞櫎闈炴湁鏌愮鏂規(guī)硶鏉ユ墦鐮村閿佺殑絳夊緟錛圝ava 閿佸畾涓嶆敮鎸佽繖縐嶆柟娉曪級錛屽惁鍒欐閿佺殑綰跨▼灝嗘案榪滅瓑涓嬪幓銆? </p> <p> 铏界劧浠諱綍澶氱嚎紼嬬▼搴忎腑閮芥湁姝婚攣鐨勯闄╋紝浣嗙嚎紼嬫睜鍗村紩鍏ヤ簡鍙︿竴縐嶆閿佸彲鑳斤紝鍦ㄩ偅縐嶆儏鍐典笅錛屾墍鏈夋睜綰跨▼閮藉湪鎵ц宸查樆濉炵殑絳夊緟闃熷垪涓彟涓浠誨姟鐨勬墽琛岀粨鏋滅殑浠誨姟錛?浣嗚繖涓浠誨姟鍗村洜涓烘病鏈夋湭琚崰鐢ㄧ殑綰跨▼鑰屼笉鑳借繍琛屻傚綋綰跨▼姹犺鐢ㄦ潵瀹炵幇娑夊強(qiáng)璁稿浜や簰瀵硅薄鐨勬ā鎷燂紝琚ā鎷熺殑瀵硅薄鍙互鐩鎬簰鍙戦佹煡璇紝榪欎簺鏌ヨ鎺ヤ笅鏉ヤ綔涓烘帓闃熺殑浠?鍔℃墽琛岋紝鏌ヨ瀵硅薄鍙堝悓姝ョ瓑寰呯潃鍝嶅簲鏃訛紝浼?xì)鍙戠敓杩櫩U嶆儏鍐點(diǎn)?/p> <p><a name="N100DA">璧勬簮涓嶈凍</a></p> <p> 綰跨▼姹犵殑涓涓紭鐐瑰湪浜庯細(xì)鐩稿浜庡叾瀹冩浛浠h皟搴︽満鍒訛紙鏈変簺鎴戜滑宸茬粡璁ㄨ榪囷級鑰岃█錛屽畠浠氬父鎵ц寰楀緢濂姐備絾鍙湁鎭板綋鍦拌皟鏁翠簡綰跨▼姹犲ぇ灝忔椂鎵嶆槸榪欐牱鐨勩傜嚎紼嬫秷鑰楀寘鎷唴瀛樺拰鍏跺畠緋葷粺璧勬簮鍦ㄥ唴鐨勫ぇ閲忚祫婧愩傞櫎浜? <code>Thread</code> 瀵硅薄鎵闇鐨勫唴瀛樹箣澶栵紝姣忎釜綰跨▼閮介渶瑕佷袱涓彲鑳藉緢澶х殑鎵ц璋冪敤鍫嗘爤銆傞櫎姝や互澶栵紝JVM 鍙兘浼?xì)湄?fù)姣忎釜 Java 綰跨▼鍒涘緩涓涓湰鏈虹嚎紼嬶紝榪欎簺鏈満綰跨▼灝嗘秷鑰楅澶栫殑緋葷粺璧勬簮銆傛渶鍚庯紝铏界劧綰跨▼涔嬮棿鍒囨崲鐨勮皟搴﹀紑閿寰堝皬錛屼絾濡傛灉鏈夊緢澶氱嚎紼嬶紝鐜鍒囨崲涔熷彲鑳戒弗閲嶅湴褰卞搷紼嬪簭鐨勬ц兘銆? </p> <p> 濡傛灉綰跨▼姹犲お澶э紝閭d箞琚偅浜涚嚎紼嬫秷鑰楃殑璧勬簮鍙兘涓ラ噸鍦板獎鍝嶇郴緇熸ц兘銆傚湪綰跨▼涔嬮棿榪涜鍒囨崲灝嗕細(xì)嫻垂鏃墮棿錛岃屼笖浣跨敤瓚呭嚭姣旀?zhèn)ㄥ疄闄呴渶瑕佺殑綰跨▼鍙兘浼?xì)寮曡弹偟勬簮鍖?闂錛屽洜涓烘睜綰跨▼姝e湪娑堣椾竴浜涜祫婧愶紝鑰岃繖浜涜祫婧愬彲鑳戒細(xì)琚叾瀹冧換鍔℃洿鏈夋晥鍦板埄鐢ㄣ傞櫎浜嗙嚎紼嬭嚜韜墍浣跨敤鐨勮祫婧愪互澶栵紝鏈嶅姟璇鋒眰鏃舵墍鍋氱殑宸ヤ綔鍙兘闇瑕佸叾瀹冭祫婧愶紝渚?濡?JDBC 榪炴帴銆佸鎺ュ瓧鎴栨枃浠躲傝繖浜涗篃閮芥槸鏈夐檺璧勬簮錛屾湁澶鐨勫茍鍙戣姹備篃鍙兘寮曡搗澶辨晥錛屼緥濡備笉鑳藉垎閰?JDBC 榪炴帴銆?/p> <p><a name="N100EA">騫跺彂閿欒</a></p> <p> 綰跨▼姹犲拰鍏跺畠鎺掗槦鏈哄埗渚濋潬浣跨敤 <code>wait()</code> 鍜? <code>notify()</code> 鏂規(guī)硶錛岃繖涓や釜鏂規(guī)硶閮介毦浜庝嬌鐢ㄣ傚鏋滅紪鐮佷笉姝g‘錛岄偅涔堝彲鑳戒涪澶遍氱煡錛屽鑷寸嚎紼嬩繚鎸佺┖闂茬姸鎬侊紝灝界闃熷垪涓湁宸ヤ綔瑕佸鐞嗐備嬌鐢ㄨ繖浜涙柟娉曟椂錛屽繀欏繪牸澶栧皬蹇冿紱鍗充究鏄笓瀹朵篃鍙兘鍦ㄥ畠浠笂闈㈠嚭閿欍傝屾渶濂戒嬌鐢ㄧ幇鏈夌殑銆佸凡緇忕煡閬撹兘宸ヤ綔鐨勫疄鐜幫紝渚嬪鍦ㄤ笅闈㈢殑 <a >鏃犻』緙栧啓鎮(zhèn)ㄨ嚜宸辯殑姹?/a>涓璁虹殑 <code>util.concurrent</code> 鍖呫? </p> <p><a name="N10103">綰跨▼娉勬紡</a></p> <p> 鍚勭綾誨瀷鐨勭嚎紼嬫睜涓竴涓弗閲嶇殑椋庨櫓鏄嚎紼嬫硠婕忥紝褰撲粠姹犱腑闄ゅ幓涓涓嚎紼嬩互鎵ц涓欏逛換鍔★紝鑰屽湪浠誨姟瀹屾垚鍚庤綰跨▼鍗存病鏈夎繑鍥炴睜鏃訛紝浼?xì)鍙戠敓杩櫩U嶆儏鍐點(diǎn)傚彂鐢熺嚎紼嬫硠婕忕殑涓縐嶆儏褰㈠嚭鐜板湪浠誨姟鎶涘嚭涓涓? <code>RuntimeException</code> 鎴栦竴涓? <code>Error</code> 鏃躲傚鏋滄睜綾繪病鏈夋崟鎹夊埌瀹冧滑錛岄偅涔堢嚎紼嬪彧浼?xì)閫鍑鴻岀嚎紼嬫睜鐨勫ぇ灝忓皢浼?xì)姘镐箙鍑彏畱涓涓傚綋榪欑鎯呭喌鍙戠敓鐨勬鏁拌凍澶熷鏃訛紝綰跨▼姹犳渶緇堝氨涓虹┖錛岃屼笖緋葷粺灝嗗仠姝紝鍥犱負(fù)娌℃湁鍙敤鐨勭嚎紼嬫潵澶勭悊浠誨姟銆? </p> <p> 鏈変簺浠誨姟鍙兘浼?xì)姘笜q滅瓑寰呮煇浜涜祫婧愭垨鏉ヨ嚜鐢ㄦ埛鐨勮緭鍏ワ紝鑰岃繖浜涜祫婧愬張涓嶈兘淇濊瘉鍙樺緱鍙敤錛岀敤鎴峰彲鑳戒篃宸茬粡鍥炲浜嗭紝璇稿姝ょ被鐨勪換鍔′細(xì)姘鎬箙鍋滄錛岃岃繖浜涘仠姝㈢殑浠誨姟涔?浼?xì)寮曡捣鍜尵U跨▼娉勬紡鍚屾牱鐨勯棶棰樸傚鏋滄煇涓嚎紼嬭榪欐牱涓涓換鍔℃案涔呭湴娑堣楃潃錛岄偅涔堝畠瀹為檯涓婂氨琚粠姹犻櫎鍘諱簡銆傚浜庤繖鏍風(fēng)殑浠誨姟錛屽簲璇ヨ涔堝彧緇欎簣瀹冧滑鑷繁鐨勭嚎紼嬶紝瑕?涔堝彧璁╁畠浠瓑寰呮湁闄愮殑鏃墮棿銆?/p> <p><a name="N10117">璇鋒眰榪囪澆</a></p> <p> 浠呬粎鏄姹傚氨鍘嬪灝浜嗘湇鍔″櫒錛岃繖縐嶆儏鍐墊槸鍙兘鐨勩傚湪榪欑鎯呭艦涓嬶紝鎴戜滑鍙兘涓嶆兂灝嗘瘡涓埌鏉ョ殑璇鋒眰閮芥帓闃熷埌鎴戜滑鐨勫伐浣滈槦鍒楋紝鍥犱負(fù)鎺掑湪闃熷垪涓瓑寰呮墽琛岀殑浠誨姟鍙兘浼?娑堣楀お澶氱殑緋葷粺璧勬簮騫跺紩璧瘋祫婧愮己涔忋傚湪榪欑鎯呭艦涓嬪喅瀹氬浣曞仛鍙栧喅浜庢?zhèn)ㄨ嚜宸卞Q涘湪鏌愪簺鎯呭喌涓嬶紝鎮(zhèn)ㄥ彲浠ョ畝鍗曞湴鎶涘純璇鋒眰錛屼緷闈犳洿楂樼駭鍒殑鍗忚紼嶅悗閲嶈瘯璇鋒眰錛屾?zhèn)ㄤ篃鍙?浠ョ敤涓涓寚鍑烘湇鍔″櫒鏆傛椂寰堝繖鐨勫搷搴旀潵鎷掔粷璇鋒眰銆?/p><p><br /></p></div><div><p><strong><a name="5">鏈夋晥浣跨敤綰跨▼姹犵殑鍑嗗垯</a></strong></p> <p> 鍙鎮(zhèn)ㄩ伒寰嚑鏉$畝鍗曠殑鍑嗗垯錛岀嚎紼嬫睜鍙互鎴愪負(fù)鏋勫緩鏈嶅姟鍣ㄥ簲鐢ㄧ▼搴忕殑鏋佸叾鏈夋晥鐨勬柟娉曪細(xì)</p> <ul><li>涓嶈瀵歸偅浜涘悓姝ョ瓑寰呭叾瀹冧換鍔$粨鏋滅殑浠誨姟鎺掗槦銆傝繖鍙兘浼?xì)瀵艰嚧涓婇潰鎵鎻忚堪鐨勯偅縐嶅艦寮忕殑姝婚攣錛屽湪閭g姝婚攣涓紝鎵鏈夌嚎紼嬮兘琚竴浜涗換鍔℃墍鍗犵敤錛岃繖浜涗換鍔′緷嬈$瓑寰呮帓闃熶換鍔$殑緇撴灉錛岃岃繖浜涗換鍔″張鏃犳硶鎵ц錛屽洜涓烘墍鏈夌殑綰跨▼閮藉緢蹇欍?</li><li>鍦ㄤ負(fù)鏃墮棿鍙兘寰堥暱鐨勬搷浣滀嬌鐢ㄥ悎鐢ㄧ殑綰跨▼鏃惰灝忓績銆傚鏋滅▼搴忓繀欏葷瓑寰呰濡?I/O 瀹屾垚榪欐牱鐨勬煇涓祫婧愶紝閭d箞璇鋒寚瀹氭渶闀跨殑絳夊緟鏃墮棿錛屼互鍙?qiáng)闅忓悗鏄け鏁垬q樻槸灝嗕換鍔¢噸鏂版帓闃熶互渚跨◢鍚庢墽琛屻傝繖鏍峰仛淇濊瘉浜嗭細(xì)閫氳繃灝嗘煇涓嚎紼嬮噴鏀劇粰鏌愪釜鍙兘鎴愬姛瀹屾垚鐨勪換鍔★紝浠庤屽皢鏈緇堝彇寰? <em>鏌愪簺</em>榪涘睍銆? <br /> </li><li>鐞嗚В浠誨姟銆傝鏈夋晥鍦拌皟鏁寸嚎紼嬫睜澶у皬錛屾?zhèn)ㄩ渶瑕佺悊瑙f鍦ㄦ帓闃熺殑浠誨姟浠ュ強(qiáng)瀹冧滑姝e湪鍋氫粈涔堛傚畠浠槸 CPU 闄愬埗鐨勶紙CPU-bound錛夊悧錛熷畠浠槸 I/O 闄愬埗鐨勶紙I/O-bound錛夊悧錛熸?zhèn)ㄧ殑绛旀灏嗗奖鍝嶆?zhèn)ㄥ浣曡皟鏁村簲鐢ㄧ▼搴忋傚鏋滄?zhèn)ㄦ湁涓嶅悓鐨勪徽d姟綾伙紝榪欎簺綾繪湁鐫鎴劧涓嶅悓鐨勭壒寰侊紝閭d箞涓轟笉鍚屼換鍔$被璁劇疆澶氫釜宸ヤ綔闃?鍒楀彲鑳戒細(xì)鏈夋剰涔夛紝榪欐牱鍙互鐩稿簲鍦拌皟鏁存瘡涓睜銆?/li></ul></div><br /><p> </p></div><img src ="http://www.tkk7.com/crazy--liyang/aggbug/357725.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/crazy--liyang/" target="_blank">crazy-鏉庨槼</a> 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