📄 relation.html
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><html><head><!-- Copyright 1997 The Open Group, All Rights Reserved --><title>Relationship to the XSH Specification</title></head><body bgcolor=white><center><font size=2>The Single UNIX ® Specification, Version 2<br>Copyright © 1997 The Open Group</font></center><hr size=2 noshade><blockquote><center><h3><a name = "tagcjh_02_04"> </a>Relationship to the XSH Specification</h3></center><h4><a name = "tagcjh_02_04_01"> </a>Error Numbers</h4>Some functions provide an error number in<i>errno</i>,which is either a variable or macro defined in<i><a href="../xsh/errno.h.html"><errno.h></a></i>;the macro expands to a modifiable<b>lvalue</b>of type<b>int</b>.<p>A list of valid values for<i>errno</i>and advice to application writers on the use of<i>errno</i>appears in the <b>XSH</b> specification.<h3><a name = "tagcjh_02_05"> </a>Thread Safety</h3>All interfaces defined by this document will bethread-safe, except for the following interfaceswhich need not be thread-safe: <p><dl compact><dt> <dd><i><a href="gethostbyaddr.html">gethostbyaddr()</a></i><br><i><a href="gethostbyname.html">gethostbyname()</a></i><br><i><a href="gethostent.html">gethostent()</a></i><br><i><a href="getnetbyaddr.html">getnetbyaddr()</a></i><br><i><a href="getnetbyname.html">getnetbyname()</a></i><br><i><a href="getnetent.html">getnetent()</a></i><br><i><a href="getprotobynumber.html">getprotobynumber()</a></i><br><i><a href="getprotobyname.html">getprotobyname()</a></i><br><i><a href="getprotoent.html">getprotoent()</a></i><br><i><a href="getservbyname.html">getservbyname()</a></i><br><i><a href="getservbyport.html">getservbyport()</a></i><br><i><a href="getservent.html">getservent()</a></i><br><i><a href="inet_ntoa.html">inet_ntoa()</a></i></dl><h3><a name = "tagcjh_02_06"> </a>Thread Cancellation Points</h3>Cancellation points will occur when a thread is executing any of the following functions:<p><dl compact><dt> <dd><i><a href="accept.html">accept()</a></i><br><i><a href="connect.html">connect()</a></i><br><i><a href="recv.html">recv()</a></i><br><i><a href="recvfrom.html">recvfrom()</a></i><br><i><a href="recvmsg.html">recvmsg()</a></i><br><i><a href="send.html">send()</a></i><br><i><a href="sendmsg.html">sendmsg()</a></i><br><i><a href="sendto.html">sendto()</a></i><br><i><a href="t_close.html">t_close()</a></i><br><i><a href="t_connect.html">t_connect()</a></i><br><i><a href="t_listen.html">t_listen()</a></i><br><i><a href="t_rcv.html">t_rcv()</a></i><br><i><a href="t_rcvconnect.html">t_rcvconnect()</a></i><br><i><a href="t_rcvrel.html">t_rcvrel()</a></i><br><i><a href="t_rcvreldata.html">t_rcvreldata()</a></i><br><i><a href="t_rcvudata.html">t_rcvudata()</a></i><br><i><a href="t_rcvv.html">t_rcvv()</a></i><br><i><a href="t_rcvvudata.html">t_rcvvudata()</a></i><br><i><a href="t_snd.html">t_snd()</a></i><br><i><a href="t_sndrel.html">t_sndrel()</a></i><br><i><a href="t_sndreldata.html">t_sndreldata()</a></i><br><i><a href="t_sndudata.html">t_sndudata()</a></i><br><i><a href="t_sndv.html">t_sndv()</a></i><br><i><a href="t_sndvudata.html">t_sndvudata()</a></i></dl><p>A cancellation point may also occur when a thread is executing any ofthe following functions:<p><dl compact><dt> <dd><i><a href="endhostent.html">endhostent()</a></i><br><i><a href="endnetent.html">endnetent()</a></i><br><i><a href="endprotoent.html">endprotoent()</a></i><br><i><a href="endservent.html">endservent()</a></i><br><i><a href="gethostbyaddr.html">gethostbyaddr()</a></i><br><i><a href="gethostbyname.html">gethostbyname()</a></i><br><i><a href="gethostent.html">gethostent()</a></i><br><i><a href="gethostname.html">gethostname()</a></i><br><i><a href="getnetbyaddr.html">getnetbyaddr()</a></i><br><i><a href="getnetbyname.html">getnetbyname()</a></i><br><i><a href="getnetent.html">getnetent()</a></i><br><i><a href="getprotobynumber.html">getprotobynumber()</a></i><br><i><a href="getprotobyname.html">getprotobyname()</a></i><br><i><a href="getprotoent.html">getprotoent()</a></i><br><i><a href="getservbyport.html">getservbyport()</a></i><br><i><a href="getservbyname.html">getservbyname()</a></i><br><i><a href="getservent.html">getservent()</a></i><br><i><a href="sethostent.html">sethostent()</a></i><br><i><a href="setnetent.html">setnetent()</a></i><br><i><a href="setprotoent.html">setprotoent()</a></i><br><i><a href="setservent.html">setservent()</a></i></dl><p>An implementation will not introduce cancellation points into anyother function specified in this document. <p>See the<b>XSH</b>,<a href="../xsh/threads.html">Section 2.8</a> for further information.<h3><a name = "tagcjh_02_07"> </a>Relationship to Emerging Formal Standards</h3>The IEEE 1003.1g standards committee is also developing interfaces to XTI and Sockets. X/Open is actively involved in the work of this committee.<p><p></blockquote><hr size=2 noshade><center><font size=2>UNIX ® is a registered Trademark of The Open Group.<br>Copyright © 1997 The Open Group<br> [ <a href="../index.html">Main Index</a> | <a href="../xshix.html">XSH</a> | <a href="../xcuix.html">XCU</a> | <a href="../xbdix.html">XBD</a> | <a href="../cursesix.html">XCURSES</a> | <a href="../xnsix.html">XNS</a> ]</font></center><hr size=2 noshade></body></html>⌨️ 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 + -