﻿<?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>C++博客-加文</title><link>http://www.cppblog.com/chxzwj/</link><description>      在这个世界上取得成就的人，都努力去寻找他们想要的机会，如果找不到机会，他们便自己创造机会。      -- 萧伯纳</description><language>zh-cn</language><lastBuildDate>Thu, 09 Apr 2026 05:38:55 GMT</lastBuildDate><pubDate>Thu, 09 Apr 2026 05:38:55 GMT</pubDate><ttl>60</ttl><item><title>面向对象</title><link>http://www.cppblog.com/chxzwj/archive/2013/05/15/200287.html</link><dc:creator>chxzwj</dc:creator><author>chxzwj</author><pubDate>Wed, 15 May 2013 06:22:00 GMT</pubDate><guid>http://www.cppblog.com/chxzwj/archive/2013/05/15/200287.html</guid><wfw:comment>http://www.cppblog.com/chxzwj/comments/200287.html</wfw:comment><comments>http://www.cppblog.com/chxzwj/archive/2013/05/15/200287.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/chxzwj/comments/commentRss/200287.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/chxzwj/services/trackbacks/200287.html</trackback:ping><description><![CDATA[面向对象的基本特征：封装，继承，多态。<img src ="http://www.cppblog.com/chxzwj/aggbug/200287.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/chxzwj/" target="_blank">chxzwj</a> 2013-05-15 14:22 <a href="http://www.cppblog.com/chxzwj/archive/2013/05/15/200287.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>程序查询方式和DMA方式</title><link>http://www.cppblog.com/chxzwj/archive/2011/12/05/161535.html</link><dc:creator>chxzwj</dc:creator><author>chxzwj</author><pubDate>Mon, 05 Dec 2011 14:39:00 GMT</pubDate><guid>http://www.cppblog.com/chxzwj/archive/2011/12/05/161535.html</guid><wfw:comment>http://www.cppblog.com/chxzwj/comments/161535.html</wfw:comment><comments>http://www.cppblog.com/chxzwj/archive/2011/12/05/161535.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/chxzwj/comments/commentRss/161535.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/chxzwj/services/trackbacks/161535.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: 程序查询方式中，cpu和外设串行工作；dma方式中，cpu和外设有直接的通路，并行运行，cpu效率大大提高。&nbsp;&nbsp;<a href='http://www.cppblog.com/chxzwj/archive/2011/12/05/161535.html'>阅读全文</a><img src ="http://www.cppblog.com/chxzwj/aggbug/161535.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/chxzwj/" target="_blank">chxzwj</a> 2011-12-05 22:39 <a href="http://www.cppblog.com/chxzwj/archive/2011/12/05/161535.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>中断全过程 </title><link>http://www.cppblog.com/chxzwj/archive/2011/12/05/161529.html</link><dc:creator>chxzwj</dc:creator><author>chxzwj</author><pubDate>Mon, 05 Dec 2011 13:42:00 GMT</pubDate><guid>http://www.cppblog.com/chxzwj/archive/2011/12/05/161529.html</guid><wfw:comment>http://www.cppblog.com/chxzwj/comments/161529.html</wfw:comment><comments>http://www.cppblog.com/chxzwj/archive/2011/12/05/161529.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/chxzwj/comments/commentRss/161529.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/chxzwj/services/trackbacks/161529.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: 中断全过程分为中断请求，中断判优，中断处理，中断返回。pc和psw为现场，一般情况下，在中断中期由中断隐指令完成保存任务；中断服务程序的psw和pc装入后，在中断服务程序中，保护现场，然后开中断，继而进行中断处理，完毕后，关闭中断，恢复pc和psw的值，紧接着，开中断，最后一条指令，中断返回指令。&nbsp;&nbsp;<a href='http://www.cppblog.com/chxzwj/archive/2011/12/05/161529.html'>阅读全文</a><img src ="http://www.cppblog.com/chxzwj/aggbug/161529.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/chxzwj/" target="_blank">chxzwj</a> 2011-12-05 21:42 <a href="http://www.cppblog.com/chxzwj/archive/2011/12/05/161529.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>为何引入进程</title><link>http://www.cppblog.com/chxzwj/archive/2011/11/03/159576.html</link><dc:creator>chxzwj</dc:creator><author>chxzwj</author><pubDate>Thu, 03 Nov 2011 10:40:00 GMT</pubDate><guid>http://www.cppblog.com/chxzwj/archive/2011/11/03/159576.html</guid><wfw:comment>http://www.cppblog.com/chxzwj/comments/159576.html</wfw:comment><comments>http://www.cppblog.com/chxzwj/archive/2011/11/03/159576.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/chxzwj/comments/commentRss/159576.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/chxzwj/services/trackbacks/159576.html</trackback:ping><description><![CDATA[程序的执行顺序：具有顺序性，封闭性，可再现性。<br />并发执行：具有间断性，失去封闭性，不可再现性。<br />在多道环境下，程序的执行时并发的，这样的程序就要失去封闭性，并且间断，失去封闭性。并发的三个特点，决定通常的程序是不能被并发执行的。<img src ="http://www.cppblog.com/chxzwj/aggbug/159576.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/chxzwj/" target="_blank">chxzwj</a> 2011-11-03 18:40 <a href="http://www.cppblog.com/chxzwj/archive/2011/11/03/159576.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>中断和系统调用的区别</title><link>http://www.cppblog.com/chxzwj/archive/2011/11/03/159575.html</link><dc:creator>chxzwj</dc:creator><author>chxzwj</author><pubDate>Thu, 03 Nov 2011 09:03:00 GMT</pubDate><guid>http://www.cppblog.com/chxzwj/archive/2011/11/03/159575.html</guid><wfw:comment>http://www.cppblog.com/chxzwj/comments/159575.html</wfw:comment><comments>http://www.cppblog.com/chxzwj/archive/2011/11/03/159575.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/chxzwj/comments/commentRss/159575.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/chxzwj/services/trackbacks/159575.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;中断分两种，硬中断和软中断；硬中断是实实在在的硬件发出的中断，cpu检测到发生中断后，保护现场，查找中断向量地址，执行中断服务程序，之后，重新选择进程进行调度。软中断是由指令执行过程中发出的中断，但是并没有中断向量表，而是有对应的散转表，查找对应的中断号，转中断服务程序，之后的和硬中断相同。<br />&nbsp; &nbsp;系统调用是软中断的一种。<br />&nbsp; &nbsp;无论如何，发生中断时，要从目态转向管态。 <img src ="http://www.cppblog.com/chxzwj/aggbug/159575.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/chxzwj/" target="_blank">chxzwj</a> 2011-11-03 17:03 <a href="http://www.cppblog.com/chxzwj/archive/2011/11/03/159575.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>用户互斥使用临界区时，屏蔽所有中断所带来的后果</title><link>http://www.cppblog.com/chxzwj/archive/2011/11/03/159572.html</link><dc:creator>chxzwj</dc:creator><author>chxzwj</author><pubDate>Thu, 03 Nov 2011 08:40:00 GMT</pubDate><guid>http://www.cppblog.com/chxzwj/archive/2011/11/03/159572.html</guid><wfw:comment>http://www.cppblog.com/chxzwj/comments/159572.html</wfw:comment><comments>http://www.cppblog.com/chxzwj/archive/2011/11/03/159572.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/chxzwj/comments/commentRss/159572.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/chxzwj/services/trackbacks/159572.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: &nbsp;&nbsp;<a href='http://www.cppblog.com/chxzwj/archive/2011/11/03/159572.html'>阅读全文</a><img src ="http://www.cppblog.com/chxzwj/aggbug/159572.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/chxzwj/" target="_blank">chxzwj</a> 2011-11-03 16:40 <a href="http://www.cppblog.com/chxzwj/archive/2011/11/03/159572.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>进入中断周期的条件</title><link>http://www.cppblog.com/chxzwj/archive/2011/11/02/159513.html</link><dc:creator>chxzwj</dc:creator><author>chxzwj</author><pubDate>Wed, 02 Nov 2011 07:44:00 GMT</pubDate><guid>http://www.cppblog.com/chxzwj/archive/2011/11/02/159513.html</guid><wfw:comment>http://www.cppblog.com/chxzwj/comments/159513.html</wfw:comment><comments>http://www.cppblog.com/chxzwj/archive/2011/11/02/159513.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/chxzwj/comments/commentRss/159513.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/chxzwj/services/trackbacks/159513.html</trackback:ping><description><![CDATA[1，指令执行结束<br />2，有中断请求<br />3，cpu允许中断<br />4，没有DMA请求<img src ="http://www.cppblog.com/chxzwj/aggbug/159513.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/chxzwj/" target="_blank">chxzwj</a> 2011-11-02 15:44 <a href="http://www.cppblog.com/chxzwj/archive/2011/11/02/159513.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>中断服务程序和调用子程序的区别</title><link>http://www.cppblog.com/chxzwj/archive/2011/11/02/159512.html</link><dc:creator>chxzwj</dc:creator><author>chxzwj</author><pubDate>Wed, 02 Nov 2011 07:43:00 GMT</pubDate><guid>http://www.cppblog.com/chxzwj/archive/2011/11/02/159512.html</guid><wfw:comment>http://www.cppblog.com/chxzwj/comments/159512.html</wfw:comment><comments>http://www.cppblog.com/chxzwj/archive/2011/11/02/159512.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/chxzwj/comments/commentRss/159512.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/chxzwj/services/trackbacks/159512.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: &nbsp;&nbsp;<a href='http://www.cppblog.com/chxzwj/archive/2011/11/02/159512.html'>阅读全文</a><img src ="http://www.cppblog.com/chxzwj/aggbug/159512.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/chxzwj/" target="_blank">chxzwj</a> 2011-11-02 15:43 <a href="http://www.cppblog.com/chxzwj/archive/2011/11/02/159512.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>高速缓存替换策略</title><link>http://www.cppblog.com/chxzwj/archive/2011/11/01/159444.html</link><dc:creator>chxzwj</dc:creator><author>chxzwj</author><pubDate>Tue, 01 Nov 2011 04:05:00 GMT</pubDate><guid>http://www.cppblog.com/chxzwj/archive/2011/11/01/159444.html</guid><wfw:comment>http://www.cppblog.com/chxzwj/comments/159444.html</wfw:comment><comments>http://www.cppblog.com/chxzwj/archive/2011/11/01/159444.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/chxzwj/comments/commentRss/159444.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/chxzwj/services/trackbacks/159444.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: &nbsp;&nbsp;<a href='http://www.cppblog.com/chxzwj/archive/2011/11/01/159444.html'>阅读全文</a><img src ="http://www.cppblog.com/chxzwj/aggbug/159444.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/chxzwj/" target="_blank">chxzwj</a> 2011-11-01 12:05 <a href="http://www.cppblog.com/chxzwj/archive/2011/11/01/159444.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>实存管理和虚存管理</title><link>http://www.cppblog.com/chxzwj/archive/2011/10/31/159415.html</link><dc:creator>chxzwj</dc:creator><author>chxzwj</author><pubDate>Mon, 31 Oct 2011 14:37:00 GMT</pubDate><guid>http://www.cppblog.com/chxzwj/archive/2011/10/31/159415.html</guid><wfw:comment>http://www.cppblog.com/chxzwj/comments/159415.html</wfw:comment><comments>http://www.cppblog.com/chxzwj/archive/2011/10/31/159415.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/chxzwj/comments/commentRss/159415.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/chxzwj/services/trackbacks/159415.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: &nbsp;&nbsp;<a href='http://www.cppblog.com/chxzwj/archive/2011/10/31/159415.html'>阅读全文</a><img src ="http://www.cppblog.com/chxzwj/aggbug/159415.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/chxzwj/" target="_blank">chxzwj</a> 2011-10-31 22:37 <a href="http://www.cppblog.com/chxzwj/archive/2011/10/31/159415.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item></channel></rss>