内容简介
#include <unistd.h>int idle(void);
描述
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.
返回值
idle() never returns for process 0, and always returns -1 for a user process.错误
| 标签 | 描述 |
|---|---|
| EPERM | Always, for a user process. |
遵循于
This function is Linux-specific, and should not be used in programs intended to be portable.注意
Since 2.3.13 this system call does not exist anymore.
