📄 siginterrupt.html
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><html><head><!-- Copyright 1997 The Open Group, All Rights Reserved --><title>siginterrupt</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><h4><a name = "tag_000_008_636"> </a>NAME</h4><blockquote>siginterrupt - allow signals to interrupt functions</blockquote><h4><a name = "tag_000_008_637"> </a>SYNOPSIS</h4><blockquote><pre><code>#include <<a href="signal.h.html">signal.h</a>>int siginterrupt(int <i>sig</i>, int <i>flag</i>);</code></pre></blockquote><h4><a name = "tag_000_008_638"> </a>DESCRIPTION</h4><blockquote>The<i>siginterrupt()</i>function is used to change the restartbehaviour when a function is interrupted by the specified signal.The function <i>siginterrupt</i>(<i>sig</i>, <i>flag</i>) has aneffect as if implemented as:<pre><code>siginterrupt(int sig, int flag) { int ret; struct sigaction act; (void) sigaction(sig, NULL, &act); if (flag) act.sa_flags &= ~SA_RESTART; else act.sa_flags |= SA_RESTART; ret = sigaction(sig, &act, NULL); return ret;}</code></pre></blockquote><h4><a name = "tag_000_008_639"> </a>RETURN VALUE</h4><blockquote>Upon successful completion,<i>siginterrupt()</i>returns 0. Otherwise -1 is returned and<i>errno</i>is set to indicate the error.</blockquote><h4><a name = "tag_000_008_640"> </a>ERRORS</h4><blockquote>The<i>siginterrupt()</i>function will fail if:<dl compact><dt>[EINVAL]<dd>The<i>sig</i>argument is not a valid signal number.</dl></blockquote><h4><a name = "tag_000_008_641"> </a>EXAMPLES</h4><blockquote>None.</blockquote><h4><a name = "tag_000_008_642"> </a>APPLICATION USAGE</h4><blockquote>The<i>siginterrupt()</i>function supports programs written to historical system interfaces.A portable application, when being written or rewritten, should use<i><a href="sigaction.html">sigaction()</a></i>with the SA_RESTART flag instead of<i>siginterrupt()</i>.</blockquote><h4><a name = "tag_000_008_643"> </a>FUTURE DIRECTIONS</h4><blockquote>None.</blockquote><h4><a name = "tag_000_008_644"> </a>SEE ALSO</h4><blockquote><i><a href="sigaction.html">sigaction()</a></i>,<i><a href="signal.h.html"><signal.h></a></i>.</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 + -