�??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#31934;&#21697;&#20037;&#20037;&#20037;&#22269;&#20135;&#44;&#25104;&#20154;&#22269;&#20135;&#19968;&#21306;&#20108;&#21306;&#19977;&#21306;&#31934;&#21697;&#44;&#22269;&#20135;&#31934;&#21697;&#20037;&#20037;&#20037;&#20037;&#20037;&#20037;&#20037;&#20037;&#107;&#116;&#118;&#13;</title><link>http://www.aygfsteel.com/killme2008/archive/2012/06/15/380822.html</link><dc:creator>dennis</dc:creator><author>dennis</author><pubDate>Thu, 14 Jun 2012 18:52:00 GMT</pubDate><guid>http://www.aygfsteel.com/killme2008/archive/2012/06/15/380822.html</guid><wfw:comment>http://www.aygfsteel.com/killme2008/comments/380822.html</wfw:comment><comments>http://www.aygfsteel.com/killme2008/archive/2012/06/15/380822.html#Feedback</comments><slash:comments>1</slash:comments><wfw:commentRss>http://www.aygfsteel.com/killme2008/comments/commentRss/380822.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/killme2008/services/trackbacks/380822.html</trackback:ping><description><![CDATA[<br />
&nbsp; &nbsp; <a >HouseMD</a>是淘宝的聚石写的一个非�怼��U�的Java�q�程�q�行时诊断和调试工具�Q�如果你接触�q�btrace�Q�那么HouseMD也许你应该尝试下�Q�它比btrace更易用，不需要写脚本�Q�类似strace的方式attach到jvm�q�程做跟�t�调试�?br />
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&nbsp; &nbsp; 基本的安装和使用��L���q�篇文档�?a >UserGuide</a>》，恕不重复。以下内定w��假设你正���安装了housemd�?br />
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&nbsp; &nbsp; 本文主要介绍下怎么用housemd诊断跟踪clojure�q�程。Clojure的java实现也是跑在JVM里，当然也可以用housemd�?br /><br />
&nbsp; &nbsp; 我们以一个简单的例子开始，假设我们有如下clojure代码�Q?br />
<div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br />
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-->(loop&nbsp;[x&nbsp;1]<br />
&nbsp;&nbsp;(Thread/sleep&nbsp;1000)<br />
&nbsp;&nbsp;(prn&nbsp;x)<br />
&nbsp;&nbsp;(recur (inc x)))</div>
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&nbsp; &nbsp; �q�段很简单，只是间隔一�U�不断地打印递增的数字x。我们准备用housemd跟踪�q�个�E�序的运行，首先�q�行�q�个�E�序�Q�你可以用lein�Q�也可以直接java命��o�q�行�Q?br />
<div style="font-size: 13px; border: 1px solid #cccccc; padding: 4px 5px 4px 4px; width: 98%; word-break: break-all; background-color: #eeeeee; "><!--<br />
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-->java&nbsp;-cp&nbsp;clojure.jar&nbsp;clojure.main&nbsp;test.clj</div>
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&nbsp; &nbsp; �q�行时不断地在控制台打印数字�Q�通过jps或者ps查询到该�q�程的id�Q�假设�ؓpid�Q���用housemd�q�接到该�q�程�Q?br />
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Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
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-->housemd&nbsp;&lt;pid&gt;</div>
&nbsp; &nbsp; ��利�q�入housemd的交互控制台�Q�通过help命��o可以查询支持的命令：<br />
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-->housemd&gt;&nbsp;help<br />
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quit&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;terminate&nbsp;the&nbsp;process.<br />
help&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;display&nbsp;<span style="color: #0000FF; ">this</span>&nbsp;infomation.<br />
trace&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;display&nbsp;or&nbsp;output&nbsp;infomation&nbsp;of&nbsp;method&nbsp;invocaton.<br />
loaded&nbsp;&nbsp;&nbsp;&nbsp;display&nbsp;loaded&nbsp;classes&nbsp;information.</div>
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&nbsp; &nbsp; 要用housemd调试clojure�Q�你需要对clojure的实现有一点点了解�Q�有兴趣可以看过�ȝ��一���blog�?a href="http://www.aygfsteel.com/killme2008/archive/2010/07/11/325775.html">clojure hacking guide</a>》，���单来��_��clojure的编译器会将clojure代码�~�译成java�c�dƈ�q�行。对于JVM来说�Q�clojure生成的类�Q�跟java�~�译器生成类没有什么不同�?br />
&nbsp; &nbsp; 具体��C��面的clojure代码�Q�会生成一个名�?strong>user$eval1</strong>的类�Q�user是默认的namespace�Q�而eval1是clojure�~�译器自动生成的一个标�C�类名，通过<strong>loaded</strong>命��o查询�cȝ��加蝲情况�Q?br />
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-->housemd&gt;&nbsp;loaded&nbsp;user$eval1&nbsp;-h<br />
user$eval1&nbsp;-&gt;&nbsp;<span style="color: #0000FF; ">null</span><br />
&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;clojure.lang.DynamicClassLoader@1d25d06e<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;clojure.lang.DynamicClassLoader@1d96f4b5<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;sun.misc.Launcher$ExtClassLoader@69cd2e5f</div>
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&nbsp; &nbsp; 通过-h选项打印了加载user$eval1的类加蝲器的层次关系�Q�因为user$eval1是动态生成的�Q�clojure启动�q�程中）�Q�因此它不在��M��一个class或者jar文�g中。除了查询user namespace的类之外�Q�你�q�可以查询clojure.core,clojure.lang,clojure.java�{��Q何被加蝲�q�来的类�Q�例如查询clojure.core.prn的类,在clojure里这是一个函敎ͼ�在jvm看来�q�只是一个类�Q?br /><div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />-->housemd&gt;&nbsp;loaded&nbsp;-h&nbsp;core$prn<br />clojure.core$prn&nbsp;-&gt;&nbsp;/Volumes/HDD/Users/apple/clojure/clojure.jar<br />&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;sun.misc.Launcher$ExtClassLoader@69cd2e5f</div>&nbsp; &nbsp;注意�Q�不需要完整的namespace&#8212;&#8212;clojure.core�Q�直接core$prn卛_��。其他也是类伹{�?strong>���技巧：如果你实在不知道clojure�~�译器生成的�c�d���Q�你可以利用jvm自带的jmap命��o来查询�?/strong><br /><br />&nbsp; &nbsp;接下来，我们���试用trace命��o跟踪�Ҏ��的运行，例如例子中的clojure代码用到了loop和recur两个sepcial form�Q�我们跟�t�下loop:<br /><div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />-->housemd&gt;&nbsp;trace&nbsp;-t&nbsp;5&nbsp;core$loop<br />INFO&nbsp;:&nbsp;probe&nbsp;<span style="color: #0000FF; ">class</span>&nbsp;clojure.core$loop<br />core$loop.doInvoke(Object,&nbsp;Object,&nbsp;Object,&nbsp;Object)&nbsp;&nbsp;&nbsp;&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-ms&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #0000FF; ">null</span><br />core$loop.getRequiredArity()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-ms&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #0000FF; ">null</span><br /><br />core$loop.doInvoke(Object,&nbsp;Object,&nbsp;Object,&nbsp;Object)&nbsp;&nbsp;&nbsp;&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-ms&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #0000FF; ">null</span><br />core$loop.getRequiredArity()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-ms&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #0000FF; ">null</span><br /><br />core$loop.doInvoke(Object,&nbsp;Object,&nbsp;Object,&nbsp;Object)&nbsp;&nbsp;&nbsp;&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-ms&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #0000FF; ">null</span><br />core$loop.getRequiredArity()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-ms&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #0000FF; ">null</span><br /><br />core$loop.doInvoke(Object,&nbsp;Object,&nbsp;Object,&nbsp;Object)&nbsp;&nbsp;&nbsp;&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-ms&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #0000FF; ">null</span><br />core$loop.getRequiredArity()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-ms&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #0000FF; ">null</span><br /><br />core$loop.doInvoke(Object,&nbsp;Object,&nbsp;Object,&nbsp;Object)&nbsp;&nbsp;&nbsp;&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-ms&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #0000FF; ">null</span><br />core$loop.getRequiredArity()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-ms&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #0000FF; ">null</span><br /><br />INFO&nbsp;:&nbsp;Ended&nbsp;by&nbsp;timeout<br />INFO&nbsp;:&nbsp;reset&nbsp;<span style="color: #0000FF; ">class</span>&nbsp;clojure.core$loop</div><br />&nbsp; &nbsp; �?�U�内�Q�clojure.core$loop�c�L��两个�Ҏ��各被调用�?�ơ，doInvoke是实际的调用�Q�而getRequiredArity用来查询loop所需要的参数个数。trace�q�可以跟�t�到具体的方法，例如我们跟踪prn函数的调用情况：<br /><div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />-->housemd&gt;&nbsp;trace&nbsp;-t&nbsp;5&nbsp;core$prn.<strong>doInvoke</strong><br />INFO&nbsp;:&nbsp;probe&nbsp;<span style="color: #0000FF; ">class</span>&nbsp;clojure.core$prn<br />core$prn.doInvoke(Object)&nbsp;&nbsp;&nbsp;&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1ms&nbsp;&nbsp;&nbsp;&nbsp;clojure.core$prn@3e4ac866<br /><br />core$prn.doInvoke(Object)&nbsp;&nbsp;&nbsp;&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;1ms&nbsp;&nbsp;&nbsp;&nbsp;clojure.core$prn@3e4ac866<br /><br />core$prn.doInvoke(Object)&nbsp;&nbsp;&nbsp;&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;1ms&nbsp;&nbsp;&nbsp;&nbsp;clojure.core$prn@3e4ac866<br /><br />core$prn.doInvoke(Object)&nbsp;&nbsp;&nbsp;&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;1ms&nbsp;&nbsp;&nbsp;&nbsp;clojure.core$prn@3e4ac866<br /><br />core$prn.doInvoke(Object)&nbsp;&nbsp;&nbsp;&nbsp;sun.misc.Launcher$AppClassLoader@a6eb38a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;1ms&nbsp;&nbsp;&nbsp;&nbsp;clojure.core$prn@3e4ac866<br /><br />INFO&nbsp;:&nbsp;Ended&nbsp;by&nbsp;timeout<br />INFO&nbsp;:&nbsp;reset&nbsp;<span style="color: #0000FF; ">class</span>&nbsp;clojure.core$prn</div>&nbsp;&nbsp;<br />&nbsp; &nbsp;trace打印了方法的调用�ơ数�Q?�U�内�Q�和每次调用的时��_��毫秒�U�别�Q�，以及调用的target object<strong>。小技巧：没有可变参数的函数生成类最�l�调用的是invoke�Ҏ���Q�参��C��数可能重载）�Q�有可变参数的函数调用的是doInvoke�Ҏ���?br /><br /></strong>&nbsp; &nbsp;trace命��o�q�支持打印调用堆栈到文�g�Q�例如：<br /><div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />-->trace&nbsp;-t&nbsp;5&nbsp;-d&nbsp;-s&nbsp;&nbsp;core$prn.doInvoke</div><br />&nbsp; &nbsp;利用-s�?d命��o会将详细的调用信息输出到临时目录�Q���时目录的路径可以通过trace help命��o查询刎ͼ�在我的机器上�?tmp/trace/&lt;pid&gt;@host目录下。调用堆栈的输出�c�M���Q?br /><div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />-->example$square.invoke(Long)&nbsp;call&nbsp;by&nbsp;thread&nbsp;[main]<br />&nbsp;&nbsp;&nbsp;&nbsp;example$eval9.invoke(test.clj:11)<br />&nbsp;&nbsp;&nbsp;&nbsp;clojure.lang.Compiler.eval(Compiler.java:6465)<br />&nbsp;&nbsp;&nbsp;&nbsp;clojure.lang.Compiler.load(Compiler.java:6902)<br />&nbsp;&nbsp;&nbsp;&nbsp;clojure.lang.Compiler.loadFile(Compiler.java:6863)<br />&nbsp;&nbsp;&nbsp;&nbsp;clojure.main$load_script.invoke(main.clj:282)<br />&nbsp;&nbsp;&nbsp;&nbsp;clojure.main$script_opt.invoke(main.clj:342)<br />&nbsp;&nbsp;&nbsp;&nbsp;clojure.main$main.doInvoke(main.clj:426)<br />&nbsp;&nbsp;&nbsp;&nbsp;clojure.lang.RestFn.invoke(RestFn.java:421)<br />&nbsp;&nbsp;&nbsp;&nbsp;clojure.lang.Var.invoke(Var.java:405)<br />&nbsp;&nbsp;&nbsp;&nbsp;clojure.lang.AFn.applyToHelper(AFn.java:163)<br />&nbsp;&nbsp;&nbsp;&nbsp;clojure.lang.Var.applyTo(Var.java:518)<br />&nbsp;&nbsp;&nbsp;&nbsp;clojure.main.main(main.java:37)</div><br />&nbsp; &nbsp;上面�q�个���单的例子展示了��用housemd跟踪诊断clojure�q�程的方法�?br /><br />&nbsp; &nbsp;自定义ns和函数的调试与此�c�M���Q�假设我们有下面的clojure代码�Q?br /><div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />-->(ns&nbsp;example)<br />(defn&nbsp;square&nbsp;[x]<br />&nbsp;&nbsp;(*&nbsp;x&nbsp;x))<br /><br />(loop&nbsp;[x&nbsp;1]<br />&nbsp;&nbsp;(Thread/sleep&nbsp;1000)<br />&nbsp;&nbsp;(square&nbsp;x)<br />&nbsp;&nbsp;(recur&nbsp;(inc&nbsp;x)))</div>&nbsp;<br />&nbsp; &nbsp;ns为example�Q�自定义函数square�q�定期��@环调用。��用housemd诊断�q�段代码�Q?br /><div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />-->loaded&nbsp;-h&nbsp;example$square&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;#查询square的加载情�?br />trace&nbsp;-t&nbsp;10 -d -s example$square.invoke&nbsp;&nbsp;#跟踪10�U�内square的调用情�?/div><img src ="http://www.aygfsteel.com/killme2008/aggbug/380822.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/killme2008/" target="_blank">dennis</a> 2012-06-15 02:52 <a href="http://www.aygfsteel.com/killme2008/archive/2012/06/15/380822.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Emacs + Clojure配置的几个Tip</title><link>http://www.aygfsteel.com/killme2008/archive/2012/05/19/378535.html</link><dc:creator>dennis</dc:creator><author>dennis</author><pubDate>Fri, 18 May 2012 16:57:00 GMT</pubDate><guid>http://www.aygfsteel.com/killme2008/archive/2012/05/19/378535.html</guid><wfw:comment>http://www.aygfsteel.com/killme2008/comments/378535.html</wfw:comment><comments>http://www.aygfsteel.com/killme2008/archive/2012/05/19/378535.html#Feedback</comments><slash:comments>8</slash:comments><wfw:commentRss>http://www.aygfsteel.com/killme2008/comments/commentRss/378535.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/killme2008/services/trackbacks/378535.html</trackback:ping><description><![CDATA[<br />
&nbsp; &nbsp; 很久没更新博客了�Q�在北京工作�Q�忙����ƈ且充实。目前来��_��Clojure最好的开发编辑器应该是Emacs + <a >Slime</a>的组合，利用<a >swank-clojure</a>�q�个��目�Q�加上clojure-mode�Q�可以完���地�q�行slime。编译、运行、蟩转、文档和引用查看甚至<a >debug</a>都可以搞定。具体配�|�恕不重复，看swank-clojure的文档即可自己安装�v来，或者这��?a >中文博客</a>�Q?a >windows上配�|?/a>�?br />
<br />
&nbsp; &nbsp; 分��n几个Tip�Q�也期待大家分��n你们的��用心得�?br />
<br />
&nbsp; &nbsp; 首先是自动在打开clj后缀文�g的时候启动执行clojure-jack-in与slime�q�接�Q�可以在emacs配置里加上个callback�Q?br />
<br /><div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />-->(eval-after-load&nbsp;"clojure-mode"<br />&nbsp;&nbsp;'(progn<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(require&nbsp;'slime)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(require&nbsp;'clojure-mode)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(unless&nbsp;(slime-connected-p)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(save-excursion&nbsp;(clojure-jack-in)))))</div>
&nbsp; &nbsp; �q�样在打开clj为后�~�的文件的时候，���自动启动clojure-mode执行clojure-jack-in函数�q�且�q�接slime�?br /><br />&nbsp; &nbsp; ���clj后缀的文件自动关联到clojure-mode:<br />
<div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
-->(setq&nbsp;auto-mode-alist&nbsp;(cons&nbsp;'("\\.clj$"&nbsp;.&nbsp;clojure-mode)&nbsp;auto-mode-alist))</div>
&nbsp; &nbsp; 通常来说如果你是利用<a >marmalade</a>安装的，会自动关联的�?br /><br />&nbsp; &nbsp; 另外�Q�启动自动匹配括受���字�W�串引号�{�的paredit模式一定要启动�Q?br /><div style="font-size: 13px; border: 1px solid #cccccc; padding: 4px 5px 4px 4px; width: 98%; word-break: break-all; background-color: #eeeeee; "><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />-->(defun&nbsp;paredit-mode-enable&nbsp;()&nbsp;(paredit-mode&nbsp;1))<br />(add-hook&nbsp;'clojure-mode-hook&nbsp;'paredit-mode-enable)<br />(add-hook&nbsp;'clojure-test-mode-hook&nbsp;'paredit-mode-enable)</div><br />
&nbsp; &nbsp;在��用clojure-mode或者clojure-test-mode的时候自动启用paredit模式�Q�括号再也不是问题。括号匹配提�C�Z��般是开启的�Q�如果没有，强制开启：<br /><br /><div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />-->;;&nbsp;&nbsp;&nbsp;&nbsp;昄���括号匚w��<br />(show-paren-mode&nbsp;t)<br />(setq&nbsp;show-paren-style&nbsp;'parentheses)</div><br />&nbsp; &nbsp; slime更多配置�Q�启用IO重定向（多线�E�IO输出都定向到SLIME repl�Q�以及设�|�通讯字符�~�码�{�：<br /><br /><div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />-->(eval-after-load&nbsp;"slime"<br />&nbsp;&nbsp;'(progn<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(slime-setup&nbsp;'(slime-repl&nbsp;slime-fuzzy))<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;;;(setq&nbsp;slime-truncate-lines&nbsp;t)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(setq&nbsp;&nbsp;swank:*globally-redirect-io*&nbsp;&nbsp;t)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;;;&nbsp;(setq&nbsp;slime-complete-symbol-function&nbsp;'&nbsp;slime-fuzzy-complete-symbol)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(setq&nbsp;slime-net-coding-system&nbsp;'utf-8-unix)))</div><br />&nbsp; &nbsp; �l�心的朋友可能注意到我注释了slime-fuzzy-complete的配�|�，�q�是一个支持更好的自动补全功能的SLIME插�g�Q�可以用�~�写来自动补全）�Q�可惜在我机器上没有���试配置成功�Q�有兴趣你可以尝试下�?br /><br />&nbsp; &nbsp; 在REPL里支持语法高亮，一定要配置上：<br /><br /><div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />-->(add-hook&nbsp;'slime-repl-mode-hook<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(defun&nbsp;clojure-mode-slime-font-lock&nbsp;()<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(require&nbsp;'clojure-mode)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(let&nbsp;(font-lock-mode)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(clojure-mode-font-lock-setup))))</div><br />&nbsp; &nbsp; 单独在clojure-mode�Q�在其他mode里这些快捷键不会起作用）里配�|�快捷键可以�q�样:<br /><div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />-->(eval-after-load&nbsp;"clojure-mode"<br />&nbsp;&nbsp;'(progn<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(require&nbsp;'slime)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(require&nbsp;'clojure-mode)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(define-key&nbsp;clojure-mode-map&nbsp;(kbd&nbsp;"M-/")&nbsp;&nbsp;(quote&nbsp;slime-complete-symbol))<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(define-key&nbsp;clojure-mode-map&nbsp;(kbd&nbsp;"C-c&nbsp;s")&nbsp;&nbsp;(quote&nbsp;slime-selector)))</div><br />&nbsp; &nbsp;例如我这里将M-/作�ؓ自动补全的快捷键�Q�因为meta键在我的Mac机器上设�|��ؓcommand键，因此自动补全的操作习惯就跟Eclipse�c�M��。�?strong>slime-selector</strong>是一个非常有用的函数�Q�用来蟩转到slime的一�p�d��buffer�Q�因此我�l�定了C-c s快捷键�?br /><br />&nbsp; &nbsp; 额外一提，在Mac osx下，���command作�ؓmeta�?<div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all">;;;&nbsp;I&nbsp;prefer&nbsp;cmd&nbsp;key&nbsp;<span style="color: #0000FF; ">for</span>&nbsp;meta<br />(setq&nbsp;mac-option-key-is-meta&nbsp;nil<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;mac-command-key-is-meta&nbsp;t<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;mac-command-modifier&nbsp;'meta<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;mac-option-modifier&nbsp;'none)</div><br />&nbsp; &nbsp; 最后，期待大家不吝分��n你的心得�?br />&nbsp; &nbsp;&nbsp;<img src ="http://www.aygfsteel.com/killme2008/aggbug/378535.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/killme2008/" target="_blank">dennis</a> 2012-05-19 00:57 <a href="http://www.aygfsteel.com/killme2008/archive/2012/05/19/378535.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Java�E�序员常用工具集</title><link>http://www.aygfsteel.com/killme2008/archive/2012/04/17/374936.html</link><dc:creator>dennis</dc:creator><author>dennis</author><pubDate>Tue, 17 Apr 2012 09:05:00 GMT</pubDate><guid>http://www.aygfsteel.com/killme2008/archive/2012/04/17/374936.html</guid><wfw:comment>http://www.aygfsteel.com/killme2008/comments/374936.html</wfw:comment><comments>http://www.aygfsteel.com/killme2008/archive/2012/04/17/374936.html#Feedback</comments><slash:comments>15</slash:comments><wfw:commentRss>http://www.aygfsteel.com/killme2008/comments/commentRss/374936.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/killme2008/services/trackbacks/374936.html</trackback:ping><description><![CDATA[<br />&nbsp; &nbsp; 我发现很多�h没办法高效地解决问题的关键原因是不熟悉工��P��不熟悉工具也�q��Ş了，甚至�q�不知道怎么��L��工具�Q�这个问题就大条了。我惛_��下我能想到的一个Java�E�序员会用到的常用工兗��?br />
<br />
一、编码工�?br />
<br />
1.IDE�Q?a >Eclipse</a>或�?a >IDEA</a>�Q�熟悉尽可能多的快捷键，�?a >Eclipse常见快捷键列�?/a>�?br />
2.插�g�Q?nbsp;<br />
(1) <a >Findbugs</a>�Q�在release之前�q�行一�ơ静态代码检查是必须�?br />
(2) <a >Clover</a>�Q�关心你的单元测试覆盖率<br />
(3)&nbsp;<a >Checkstyle</a>&nbsp;代码风格����?br />
<br />
3.构徏和部�|�工�?<a >ant</a>或�?a >maven</a>�Q�现在主���都是maven了吧�Q?a >使用nexus搭徏maven�U�服</a>�Q�再加上持箋集成<a >jenkins</a>。代码质量不用愁�?br />
<br />
4.版本���理工具�Q?<a >svn</a>或�?a >git</a><br />
<br />
5.<a >diff和patch</a><br />
<br />
6.讄���你的eclipse或者IDEA�Q�如formatter,<a >save actions</a>以及code template�{�。代码风��|��直接用google的也可以啊。�?a >Google style guide</a>�?br />
<br />
7.掌握一个文本编辑器�Q�Emacs或者VIM�Q�熟悉常用快捷键。这在你需要在�U�编辑代码，或者编写其他语�a�代码时候特别有用。�?a >���器圣战</a>�?br />
<br />
二、JDK相关<br />
<br />
1.jstat : 观察GC情况�Q�如�Q?br />
<br />
<div style="font-size: 13px; border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-top-style: solid; border-right-style: solid; border-bottom-style: solid; border-left-style: solid; border-top-color: #cccccc; border-right-color: #cccccc; border-bottom-color: #cccccc; border-left-color: #cccccc; border-image: initial; padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%; word-break: break-all; background-color: #eeeeee; "><!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
-->jstat&nbsp;-gcutil&nbsp;pid&nbsp;2000</div>
<br />
2.jmap�Q�查看heap情况�Q�如查看存活对象列表�Q?br />
<div style="font-size: 13px; border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-top-style: solid; border-right-style: solid; border-bottom-style: solid; border-left-style: solid; border-top-color: #cccccc; border-right-color: #cccccc; border-bottom-color: #cccccc; border-left-color: #cccccc; border-image: initial; padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%; word-break: break-all; background-color: #eeeeee; "><!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
-->jmap&nbsp;-histo:live&nbsp;pid&nbsp;|grep&nbsp;com.company&nbsp;|less&nbsp;</div>
<br />
或者dump内存用来分析�Q?br />
<br />
<div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
-->jmap&nbsp;-dump:file=test.bin&nbsp;pid</div>
<br />
3.分析dump的堆文�g�Q�可以用jhat:<br />
<br />
<div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
-->jhat&nbsp;test.bin</div>
<br />
&nbsp; 分析完成后可以用���览器查看堆的情��c��这个工��L��分析�l�果�q�比较原始，你还可以�?a >Eclipse MAT</a>插�g�q�行囑�Ş化分析，或者IBM�?a >Heap Analyzer</a>.<br />
<br />
4.jvisualvm和jconsole�Q?JVM自带的性能分析和监控工��P��怎么用？<a >误�����q��文档�?/a><br />
<br />
5.jstack�Q�分析线�E�堆栈，�?br />
<br />
<div style="font-size: 13px; border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-top-style: solid; border-right-style: solid; border-bottom-style: solid; border-left-style: solid; border-top-color: #cccccc; border-right-color: #cccccc; border-bottom-color: #cccccc; border-left-color: #cccccc; border-image: initial; padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%; word-break: break-all; background-color: #eeeeee; "><!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
-->jstack&nbsp;pid&nbsp;&gt;&nbsp;thread_dump</div>
<br />
&nbsp; &nbsp; 查看CPU最高的�U�程在干什么的�Ҏ���l�合top和jstack�Q?a >http://www.iteye.com/topic/1114219</a><br />
<br />
6.更多JVM工具�Q�参见官�Ҏ��档：<a >http://docs.oracle.com/javase/6/docs/technotes/tools/<br />
<br />
</a>7.学习使用btrace分析java�q�行旉���题。�?a >Btrace使用����?/a>�?br />
<br />
8.GC日志分析工具�Q?a >GC viewer</a>�?a >GC-console</a>或�?a >自己挑吧�?/a><br />
<br />
9.性能分析工具�Q�除了自带的jvisualvm外，�q�可以用商业�?a >jprofiler</a>�?br />
<br />
<a >10.JVM参数大全<br />
<br />
</a>11.�?a >JVM调优标准参数陷阱</a>》，iteye���脓�?br />
<br />
三、Linux工具<br />
<br />
1.<a >熟悉常用的shell命��o�Q?/a><br />
<div style="display: inline-block; "><br />
2.<a >讄���ssh免登�?br />
</a></div>
<br />
<br />
3.使用<a >htop</a>替换top�?br />
<br />
4.熟悉�?a >strace,gdb</a>甚至<a  title="systemtap"></a><a ></a><a  title="systemtap">systemta</a>p来分析问题�?br />
<br />
<a >5.熟悉vmstat,iostat,sar�{�性能�l�计工具�?/a><br />
<br />
5.自动化部�|�脚本，<a >py-fabric</a>或者自荐下我的<a >clojure-control</a>�?br />
<br />
四、其�?br />
<br />
1.掌握一门脚本语�a��Q?a >Python</a>或�?a >Ruby</a>�Q�高效解决一些需要quick and dirty的�Q务：比如��d��文�g、导入导出数据库、网��늈�虫等。注意不是python.com�Q�咔咔�?br />
<br />
2.使用Linux或者Mac os�pȝ��作�ؓ你的开发环境�?br />
<br />
3.升��你的&#8220;����g工具&#8221;�Q�双屏大屏显�C�器、SSD�?G内存甚至更多�?br /><br />4.你懂的：<a >https://code.google.com/p/goagent/</a><br />
<br />
五、如何查扑ַ���P��<br />
<br />
1.搜烦引擎�Q�google或者baidu�Q��?a >搜烦技�?/a>�?br />
<br />
2.万能的stack overflow�Q?a >http://stackoverflow.com/<br />
</a>
<br />
3.虚心问牛人�?br /><br />六、最重要的是&#8943;&#8943;<br /><br />一颗永不停止学习的心�?img src ="http://www.aygfsteel.com/killme2008/aggbug/374936.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/killme2008/" target="_blank">dennis</a> 2012-04-17 17:05 <a href="http://www.aygfsteel.com/killme2008/archive/2012/04/17/374936.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Emacs之一键格式化</title><link>http://www.aygfsteel.com/killme2008/archive/2011/07/26/355041.html</link><dc:creator>dennis</dc:creator><author>dennis</author><pubDate>Tue, 26 Jul 2011 03:24:00 GMT</pubDate><guid>http://www.aygfsteel.com/killme2008/archive/2011/07/26/355041.html</guid><wfw:comment>http://www.aygfsteel.com/killme2008/comments/355041.html</wfw:comment><comments>http://www.aygfsteel.com/killme2008/archive/2011/07/26/355041.html#Feedback</comments><slash:comments>4</slash:comments><wfw:commentRss>http://www.aygfsteel.com/killme2008/comments/commentRss/355041.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/killme2008/services/trackbacks/355041.html</trackback:ping><description><![CDATA[<br />&nbsp;&nbsp;&nbsp; 格式化源码是很常见的需求，emacs有个indent-region函数用于格式化选定的代码，前提是你处在某个非text mode下，如c-mode或者java-mode之类。如果要格式化整个文�Ӟ��你需要先选定整个文�g(C-x-h)�Q�然后调用indent-region�Q�或�?C-M-\ )。两个命令��L���ȝ���Q�我们可以定义个函数搞定�q�一切，�q�绑定在一个特定键上，实现一键格式化�Q?br /><br /><div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--><span style="color: #000000; ">;;格式化整个文件函�?br />(defun&nbsp;indent</span><span style="color: #000000; ">-</span><span style="color: #000000; ">whole&nbsp;()<br />&nbsp;&nbsp;(interactive)<br />&nbsp;&nbsp;(indent</span><span style="color: #000000; ">-</span><span style="color: #000000; ">region&nbsp;(point</span><span style="color: #000000; ">-</span><span style="color: #000000; ">min)&nbsp;(point</span><span style="color: #000000; ">-</span><span style="color: #000000; ">max))<br />&nbsp;&nbsp;(message&nbsp;</span><span style="color: #000000; ">"</span><span style="color: #000000; ">format&nbsp;successfully</span><span style="color: #000000; ">"</span><span style="color: #000000; ">))<br />;;�l�定到F7�?br />(global</span><span style="color: #000000; ">-</span><span style="color: #000000; ">set</span><span style="color: #000000; ">-</span><span style="color: #000000; ">key&nbsp;[f7]&nbsp;</span><span style="color: #000000; ">'</span><span style="color: #000000; ">indent-whole)</span></div><br />&nbsp;&nbsp;&nbsp; ���这�D�代码添加到你的emacs配置文�g�Q�~/.emacs)�Q�重启emacs�Q�以后格式化源码都可以用F7一键搞定�?img src ="http://www.aygfsteel.com/killme2008/aggbug/355041.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/killme2008/" target="_blank">dennis</a> 2011-07-26 11:24 <a href="http://www.aygfsteel.com/killme2008/archive/2011/07/26/355041.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item></channel></rss>                                                                                                            <footer>
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