syscalls_65.html

Linux系统调用

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<TITLE>Syscall specifications of Linux - nice</TITLE>
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<P>
<H3>SYNOPSIS</H3>
<P>
<CODE>int nice(int <VAR>inc</VAR>);</CODE>
 
<H3>PARAMETERS</H3>
<P>
<VAR>inc</VAR>: [in] the increment.
<P>
<H3>DESCRIPTION</H3>
<P>
Adds <VAR>inc</VAR> to the priority of the calling task. Only a task with
superuser privileges may specify a negative <VAR>inc</VAR>.
<P>
<H3>RETURN VALUE</H3>
<P>
On success, returns 0. On error, returns -1 and <CODE>errno</CODE> is set
to one of the following values: <CODE>EPERM</CODE>: the task tried to decrease
the priority value but does not have superuser privileges.
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