?? linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.htm
字號(hào):
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- saved from url=(0071)http://www-900.ibm.com/developerWorks/cn/linux/l-ipc/part2/index1.shtml -->
<HTML xmlns:fo = "http://www.w3.org/1999/XSL/Format"><HEAD><TITLE>Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）</TITLE>
<META content=Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上） name=TITLE>
<META content=Linux name=zone><!-- Linux-->
<META content="Linux, process, communication, IPC, 信號(hào), Unix, Linux IPC, 通信, 鄭彥興"
name=KEYWORDS>
<META
content=linux信號(hào)機(jī)制遠(yuǎn)遠(yuǎn)比想象的復(fù)雜，本文力爭(zhēng)用最短的篇幅，對(duì)該機(jī)制做了深入細(xì)致的分析。讀者可以先讀一下信號(hào)應(yīng)用實(shí)例（在信號(hào)（下）中），這樣可以對(duì)信號(hào)發(fā)送直到相應(yīng)的處理函數(shù)執(zhí)行完畢這一過程有個(gè)大致的印象。本文盡量給出了較新函數(shù)的應(yīng)用實(shí)例，著重說明這些的功能。
name=ABSTRACT>
<META
content=linux信號(hào)機(jī)制遠(yuǎn)遠(yuǎn)比想象的復(fù)雜，本文力爭(zhēng)用最短的篇幅，對(duì)該機(jī)制做了深入細(xì)致的分析。讀者可以先讀一下信號(hào)應(yīng)用實(shí)例（在信號(hào)（下）中），這樣可以對(duì)信號(hào)發(fā)送直到相應(yīng)的處理函數(shù)執(zhí)行完畢這一過程有個(gè)大致的印象。本文盡量給出了較新函數(shù)的應(yīng)用實(shí)例，著重說明這些的功能。
name=DESCRIPTION>
<META content=2003-1-3 name=DC.DATE scheme="iso8601">
<META content=2003-1-3 name=LASTUPDATE><!--- common meta part for all zones -->
<META content="text/html; charset=GB2312" http-equiv=Content-Type>
<META content=papers_html name=dWCategory>
<META content=/developerWorks/cn/cncontent.nsf/cn_dW_feedback name=OWNER>
<META content=V11 name=source>
<META content=GB2312 name=charset>
<META content=zh-cn name=DC.LANGUAGE scheme="rfc1766">
<META content=cn name=IBM.COUNTRY>
<META content=Public name=SECURITY>
<META content=text/xhtml name=FORMAT>
<META content="Copyright (c) 2002 by IBM Corporation" name=COPYRIGHT>
<META content=index,follow name=ROBOTS>
<META name=DOCUMENTCOUNTRYCODE value="cn">
<META name=DOCUMENTLANGUAGECODE value="zh">
<META
content='(PICS-1.1 "http://www.rsac.org/ratingsv01.html" l gen true comment "RSACi North America Server" by "webmaster@mail.software.ibm.com" for "http://www.ibm.com/software" on "1997.08.13T17:59-0800" r (n 0 s 0 v 0 l 0))'
http-equiv=PICS-Label>
<META content=0 http-equiv=Expires>
<SCRIPT language=JavaScript src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/style.js"
type=text/javascript></SCRIPT>
<SCRIPT language=JavaScript src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/spinbox.js"
type=text/javascript></SCRIPT>
<META content="MSHTML 5.00.3700.6699" name=GENERATOR></HEAD>
<BODY bgColor=#ffffff leftMargin=2 topMargin=2 marginwidth="2" marginheight="2"><!-- MASTHEAD-->
<TABLE border=0 cellPadding=0 cellSpacing=0 width="100%">
<TBODY>
<TR>
<TD class=tbgc width=160><A
href="http://www-900.ibm.com/developerWorks/cn/cgi-bin/click.cgi?url=www.ibm.com/cn/&origin=dwheader"><IMG
alt=IBM border=0 height=47 src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/ibm-logo.gif"
width=160></A></TD>
<TD class=tbg width=70><FONT color=#99ccff size=2><B>China</B></FONT><A
href="http://www-900.ibm.com/developerWorks/cn/linux/l-ipc/part2/index1.shtml#main"><IMG
alt="Skip to main content" border=0 height=1
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif" width=70></A></TD>
<TD align=right class=tbgc vAlign=top width="100%">
<TABLE border=0 cellPadding=0 cellSpacing=0>
<FORM action=http://www-106.ibm.com/search/searchResults.jsp id=form1
method=get name=form1>
<TBODY>
<TR>
<TD colSpan=7><IMG alt="" border=0 height=4
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif" width=390></TD></TR>
<TR vAlign=center>
<TD class=dwsearch><NOBR><FONT
color=#ffffff><B>搜索:</B></FONT></NOBR> </TD>
<TD><INPUT class=dwsearch maxLength=100 name=query size=23></TD>
<TD class=dwsearch vAlign=center> <FONT
color=#ffffff><B>在</B></FONT> </TD>
<TD class=dwsearch><SELECT class=dwsearch2
name=searchScope> <OPTION selected value=dW>dW
全部?jī)?nèi)容</OPTION> <OPTION value=javaZ> Java 技術(shù)</OPTION> <OPTION
value=linuxZ> Linux</OPTION> <OPTION
value=opensrcZ> 開放源碼</OPTION> <OPTION
value=securityZ> 安全</OPTION> <OPTION value=webservZ> Web
服務(wù)</OPTION> <OPTION value=xmlZ> XML</OPTION> <OPTION
value=dW>.................</OPTION> <OPTION
value=dmdd> DB2</OPTION> <OPTION
value=wsdd> WebSphere</OPTION> <OPTION
value=lotusdd> Lotus 專題</OPTION> <OPTION
value=tivolidd> Tivoli 專題</OPTION> <OPTION
value=dW>.................</OPTION> <OPTION value=all>IBM
全部?jī)?nèi)容</OPTION></SELECT></TD>
<TD><IMG alt="" border=0 height=1
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif" width=5></TD>
<TD><INPUT alt="Search button" border=0 height=23 name=Search
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/search.gif" type=image value=Search
width=64></TD>
<TD vAlign=top><IMG alt="" border=0 height=1
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif" width=30></TD></TR>
<TR vAlign=top>
<TD> </TD>
<TD class=dwsearch> <FONT color=#ffffff>只用 + - " "
( )</FONT>
<TD> </TD>
<TD> </TD>
<TD> </TD>
<TD> </TD>
<TD> </TD></TR><INPUT name=searchType type=hidden value=1> <INPUT
name=searchSite type=hidden value=dWChina> <INPUT name=pageLang
type=hidden value=zh> <INPUT name=langEncoding type=hidden value=gb2312>
</FORM></TBODY></TABLE></TD></TR><A id=main name=main>
<TR>
<TD class=hbg height=21 width=160> </TD>
<TD class=bbg colSpan=2 height=21 vAlign=top> <A
class=mainlink
href="http://www-900.ibm.com/developerWorks/cn/cgi-bin/click.cgi?url=www-900.ibm.com/cn/&origin=dwhead">IBM
主頁(yè)</A> <SPAN class=divider> | </SPAN> <A
class=mainlink
href="http://www-900.ibm.com/developerWorks/cn/cgi-bin/click.cgi?url=www-900.ibm.com/cn/products/index.shtml&origin=dwhead">產(chǎn)品與服務(wù)</A>
<SPAN class=divider> | </SPAN> <A class=mainlink
href="http://www-900.ibm.com/developerWorks/cn/cgi-bin/click.cgi?url=www-900.ibm.com/cn/support/index.shtml&origin=dwhead">支持與下載</A>
<SPAN class=divider> | </SPAN> <A class=mainlink
href="http://www-900.ibm.com/developerWorks/cn/cgi-bin/click.cgi?url=www-900.ibm.com/cn/account/index.shtml&origin=dwhead">個(gè)性化服務(wù)</A></TD></TR></TBODY></TABLE><!-- Color Bar -->
<TABLE border=0 cellPadding=0 cellSpacing=0 width="100%">
<TBODY>
<TR class=hil>
<TD height=1 width="100%"><IMG alt="" height=1
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif" width=592></TD></TR>
<TR class=dwr1>
<TD height=2 width="100%"><IMG alt="" height=2
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif" width=592></TD></TR>
<TR class=dwg3>
<TD height=1 width="100%"><IMG alt="" height=1
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif" width=592></TD></TR>
<TR class=bbg>
<TD height=1 width="100%"><IMG alt="" height=1
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif" width=592></TD></TR>
<TR class=hil>
<TD height=1 width="100%"><IMG alt="" height=1
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif" width=592></TD></TR></TBODY></TABLE><!-- Breadcrumb Trail -->
<TABLE border=0 cellPadding=0 cellSpacing=0 width="100%">
<TBODY>
<TR vAlign=top><!-- RIGHT GUTTER -->
<TD width=5><IMG alt="" border=0 height=1
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif" width=5></TD>
<TD width="100%">
<TABLE border=0 cellPadding=0 cellSpacing=0 width="100%">
<TBODY>
<TR vAlign=top>
<TD width="100%"><IMG alt="" border=0 height=4
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif" width=2><BR><B><A
href="http://www-900.ibm.com/developerWorks/cn/index.shtml">developerWorks
中國(guó)網(wǎng)站</A> : <A
href="http://www-900.ibm.com/developerWorks/cn/linux/index.shtml">Linux</A>
: <A
href="http://www-900.ibm.com/developerWorks/cn/cnpapers.nsf/linux-papers-bynewest?OpenView&Count=500">所有的文章
</A></B></TD>
<TD align=right width=136><A
href="http://www-900.ibm.com/developerWorks/cn/index.shtml"><IMG
alt="developerWorks 中國(guó)網(wǎng)站" border=0 height=24
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/dwlogo-small.gif" width=136></A></TD>
<TD width=5><IMG alt="" border=0 height=1
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif"
width=5></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE><!-- End Breadcrumb Trail --><!-- Title Area-->
<TABLE border=0 cellPadding=0 cellSpacing=0 width="100%">
<TBODY>
<TR vAlign=top>
<TD colSpan=5><IMG alt="" border=0 height=15
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif" width=5></TD></TR>
<TR vAlign=top><!-- Title-->
<TD width=2><IMG alt="" border=0 height=1
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif" width=2></TD>
<TD><!-- <span class="astitle">[Series title]: </span>--><SPAN
class=atitle>Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）</SPAN></TD>
<TD width=8><IMG alt="" border=0 height=1
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif" width=8></TD>
<TD width=6><IMG alt="" border=0 height=1
src="Linux環(huán)境進(jìn)程間通信（二）：信號(hào)（上）.files/c.gif" width=6></TD></TR><!-- Black line separator-->
<TR vAlign=top>
?? 快捷鍵說明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號(hào)
Ctrl + =
減小字號(hào)
Ctrl + -