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idle() - Unix, Linux System Call
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NAME
idle - make process 0 idle
SYNOPSIS
#include <unistd.h>
int idle(void); DESCRIPTION
idle() is an internal system call used during bootstrap.
It marks the process’s pages as swappable, lowers its priority,
and enters the main scheduling loop.
idle() never returns.
Only process 0 may call
idle(). Any user process, even a process with superuser permission,
will receive
EPERM. RETURN VALUE
idle() never returns for process 0, and always returns -1 for a user process.
ERRORS
| Tag | Description |
|---|
|
EPERM |
Always, for a user process.
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CONFORMING TO
This function is Linux-specific, and should not be used in programs
intended to be portable.
NOTES
Since 2.3.13 this system call does not exist anymore.
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