📄 ch12.htm
字号:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta http-equiv="Content-Language" content="zh-cn">
<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
<meta name="ProgId" content="FrontPage.Editor.Document">
<title>操作系统－第十二章</title>
<style fprolloverstyle>A:hover {color: red; font-weight: bold}
</style>
</head>
<body bgcolor="#0099FF" link="#00FFFF" vlink="#008000">
<center>
<table border="1" width="80%" bgcolor="#0000FF" height="1">
<tr>
<td width="100%" align="center" height="53" colspan="2"><font size="5" face="黑体" color="#FFFFFF"><font LANG="ZH-CN">第十二章</font>
分布式操作系统</font></td>
</tr>
<tr>
<td width="100%" align="center" height="147" colspan="2">
<p align="center"> </p>
<p align="center"><font color="#FFFFFF"><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><a href="#ch121">12．1进程的迁移<span style="mso-spacerun: yes"></span></a><span style="mso-spacerun: yes">
</span><o:p>
</o:p>
</span></font></p>
<p style="TEXT-ALIGN: center" align="center"><font color="#FFFFFF"><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><a href="#ch122">12．2<span style="mso-spacerun: yes">
</span>分布式进程同步<span style="mso-spacerun: yes"></span></a><span style="mso-spacerun: yes">
</span><o:p>
</o:p>
</span></font></p>
<p style="TEXT-ALIGN: center" align="center"><font color="#FFFFFF"><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><a href="#ch123">12．3<span style="mso-spacerun: yes">
</span>分布式进程通信<span style="mso-spacerun: yes"></span></a><span style="mso-spacerun: yes">
</span><o:p>
</o:p>
</span></font></p>
<p style="TEXT-ALIGN: center" align="center"><font color="#FFFFFF"><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><a href="#ch124">12．4<span style="mso-spacerun: yes">
</span>分布式系统中的死锁</a><o:p>
</o:p>
</span></font></p>
<p style="TEXT-ALIGN: center" align="center"><font color="#FFFFFF"><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><a href="#ch125">12．5<span style="mso-spacerun: yes">
</span>任务分配<span style="mso-spacerun: yes"></span></a><span style="mso-spacerun: yes">
</span><o:p>
</o:p>
</span></font></p>
<p style="TEXT-ALIGN: center" align="center"><font color="#FFFFFF"><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><a href="#ch126">12．6<span style="mso-spacerun: yes">
</span>网络和分布式系统的安全性</a><o:p>
</o:p>
</span></font></p>
<p style="TEXT-ALIGN: center" align="center"> </td>
</tr>
<tr>
<td width="18%" align="center" height="39"><font LANG="ZH-CN" color="#FFFFFF">作业：</font></td>
<td width="96%" align="center" height="39">
<p align="left"><font LANG="ZH-CN" color="#FFFFFF"> </font></td>
</tr>
<tr>
<td width="114%" align="center" height="39" colspan="2"><a href="index.htm"><font color="#FFFFFF">返回<<</font></a></td>
</tr>
<tr>
<td width="100%" align="left" height="53" colspan="2">
<p align="center"><font color="#FFFFFF"> <span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><a name="ch121"></a>12．1进程的迁移<span style="mso-spacerun: yes">
</span><o:p>
</o:p>
</span></font></p>
<p style="MARGIN-LEFT: 18pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l1 level1 lfo8"><span lang="EN-US" style="mso-fareast-font-family: 黑体"><font color="#FFFFFF">1．</font></span><font color="#FFFFFF"><span style="mso-ascii-font-family: Times New Roman">计算和数据的迁移</span><span lang="EN-US" style="mso-fareast-font-family: 黑体"><o:p>
</o:p>
</span></font></p>
<p><font color="#FFFFFF"><span style="mso-spacerun: yes; mso-bidi-font-size: 10.0pt" lang="EN-US">
</span><span style="mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">⑴数据迁移</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><o:p>
</o:p>
</span></font></p>
<p><font color="#FFFFFF"><span style="mso-spacerun: yes; mso-bidi-font-size: 10.0pt" lang="EN-US">
</span><span style="mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">⑵计算迁移</span></font></p>
<p style="MARGIN-LEFT: 18pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l1 level1 lfo8"><font color="#FFFFFF"><span lang="EN-US" style="mso-fareast-font-family: 黑体">2．</span><span style="mso-ascii-font-family: Times New Roman">引入进程迁移的原因</span><span lang="EN-US" style="mso-fareast-font-family: 黑体"><o:p>
</o:p>
</span></font></p>
<p style="MARGIN-LEFT: 18pt"><font color="#FFFFFF"><span style="mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">负荷均衡：</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><o:p>
</o:p>
</span></font></p>
<p style="MARGIN-LEFT: 18pt"><font color="#FFFFFF"><span style="mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">通信性能：</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><o:p>
</o:p>
</span></font></p>
<p style="MARGIN-LEFT: 18pt"><font color="#FFFFFF"><span style="mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">加速计算：</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><o:p>
</o:p>
</span></font></p>
<p style="MARGIN-LEFT: 18pt"><font color="#FFFFFF"><span style="mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">需要特殊资源：</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><o:p>
</o:p>
</span></font></p>
<p style="MARGIN-LEFT: 18pt"><font color="#FFFFFF"><span style="mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">提高可利用性：</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><o:p>
</o:p>
</span></font></p>
<p style="MARGIN-LEFT: 18pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l1 level1 lfo8"><font color="#FFFFFF"><span lang="EN-US" style="mso-fareast-font-family: 黑体">3．</span><span style="mso-ascii-font-family: Times New Roman">进程迁移机制</span><span lang="EN-US" style="mso-fareast-font-family: 黑体"><o:p>
</o:p>
</span></font></p>
<p><font color="#FFFFFF"><span style="mso-spacerun: yes; mso-bidi-font-size: 10.0pt" lang="EN-US">
</span><span style="mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">⑴进程迁移的启动</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><o:p>
</o:p>
</span></font></p>
<p><font color="#FFFFFF"><span style="mso-spacerun: yes; mso-bidi-font-size: 10.0pt" lang="EN-US">
</span><span style="mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">⑵进程迁移前后</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><o:p>
</o:p>
</span></font></p>
<p><font color="#FFFFFF"><span style="mso-spacerun: yes; mso-bidi-font-size: 10.0pt" lang="EN-US">
</span><span style="mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">⑶如何进行迁移</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><o:p>
</o:p>
</span></font></p>
<p style="TEXT-INDENT: 24pt"><font color="#FFFFFF"><span style="mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">传送整个地址空间；</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><o:p>
</o:p>
</span></font></p>
<p style="TEXT-INDENT: 24pt"><font color="#FFFFFF"><span style="mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">仅传送在内存重的那部分地址空间；</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><o:p>
</o:p>
</span></font></p>
<p><font color="#FFFFFF"><span style="mso-spacerun: yes; mso-bidi-font-size: 10.0pt" lang="EN-US">
</span><span style="mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">⑷对未完成报文的处理</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><o:p>
</o:p>
</span></font></p>
<p><font color="#FFFFFF"><span lang="EN-US">4．迁移的协商<o:p>
</o:p>
</span></font></td>
</tr>
<tr>
<td width="100%" align="left" height="53" colspan="2">
</center>
<p style="TEXT-ALIGN: center" align="center"><font color="#FFFFFF"><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><a name="ch122"></a>12．2<span style="mso-spacerun: yes">
</span>分布式进程同步<span style="mso-spacerun: yes"> </span><o:p>
</o:p>
</span></font></p>
<p style="MARGIN-LEFT: 18pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l11 level1 lfo9"><font color="#FFFFFF"><span lang="EN-US">1．</span>事件排序<span lang="EN-US"><o:p>
</o:p>
</span></font></p>
<p style="MARGIN-LEFT: 18pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l11 level1 lfo9"><font color="#FFFFFF"><span lang="EN-US">2．Lamport算法<o:p>
</o:p>
</span></font></p>
<p style="MARGIN-LEFT: 18pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l11 level1 lfo9"><font color="#FFFFFF"><span lang="EN-US">3．Ricart
and Agrawala算法<o:p>
</o:p>
</span></font></p>
<p style="MARGIN-LEFT: 18pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l11 level1 lfo9"><font color="#FFFFFF"><span lang="EN-US">4．</span>令牌传送法<span lang="EN-US"><o:p>
</o:p>
</span></font></p>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -