📄 sched.h.html
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><html><head><!-- Copyright 1997 The Open Group, All Rights Reserved --><title><sched.h></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_165"> </a>NAME</h4><blockquote>sched.h - execution scheduling(<b>REALTIME</b>)</blockquote><h4><a name = "tag_000_008_166"> </a>SYNOPSIS</h4><blockquote><pre><code>#include <sched.h></code></pre></blockquote><h4><a name = "tag_000_008_167"> </a>DESCRIPTION</h4><blockquote>The<i><sched.h></i>header defines the<b>sched_param</b>structure, which contains the scheduling parameters required forimplementation of each supported scheduling policy. This structurecontains at least the following member:<pre><code>int sched_priority process execution scheduling priority</code></pre><p>Each process is controlled by an associated scheduling policy andpriority. Associated with each policy is a priority range. Eachpolicy definition specifies the minimum priority range for thatpolicy. The priority ranges for each policy may overlapthe priority ranges of other policies.<p>Three scheduling policies are defined; others may be defined by theimplementation. The three standard policies are indicated by thevalues of the following symbolic constants:<dl compact><dt>SCHED_FIFO<dd>First in-first out (FIFO) scheduling policy.<dt>SCHED_RR<dd>Round robin scheduling policy.<dt>SCHED_OTHER<dd>Another scheduling policy.</dl><p>The values of these constants are distinct.<p>The following are declared as functions and may also be declared asmacros.Function prototypes must be provided for use with an ISO Ccompiler.<pre><code>int <a href="sched_get_priority_max.html">sched_get_priority_max</a>(int);int <a href="sched_get_priority_min.html">sched_get_priority_min</a>(int);int <a href="sched_getparam.html">sched_getparam</a>(pid_t, struct sched_param *);int <a href="sched_getscheduler.html">sched_getscheduler</a>(pid_t);int <a href="sched_rr_get_interval.html">sched_rr_get_interval</a>(pid_t, struct timespec *);int <a href="sched_setparam.html">sched_setparam</a>(pid_t, const struct sched_param *);int <a href="sched_setscheduler.html">sched_setscheduler</a>(pid_t, int, const struct sched_param *);int <a href="sched_yield.html">sched_yield</a>(void);</code></pre><p>Inclusion of the<i><sched.h></i>header will make visible symbols defined in the header<i><a href="time.h.html"><time.h></a></i>.</blockquote><h4><a name = "tag_000_008_168"> </a>APPLICATION USAGE</h4><blockquote>None.</blockquote><h4><a name = "tag_000_008_169"> </a>FUTURE DIRECTIONS</h4><blockquote>None.</blockquote><h4><a name = "tag_000_008_170"> </a>SEE ALSO</h4><blockquote><i><a href="time.h.html"><time.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 + -