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pcntl_getcpuaffinity

(PHP 8 >= 8.4.0)

pcntl_getcpuaffinity — Get the cpu affinity of a process

说明

pcntl_getcpuaffinity(?int $pid = null): bool|array

Retrieve the cpu affinity of the pid.

参数

pid
If null, the current process ID is used.

返回值

Returns the cpu affinity mask of the process, 或者在失败时返回 false.

警告

此函数可能返回布尔值 false，但也可能返回等同于 false 的非布尔值。请阅读 布尔类型章节以获取更多信息。应使用 === 运算符来测试此函数的返回值。

错误／异常

A ValueError is thrown when pid is an invalid process id or the cpu mask had failed to be created.

If pid is a process for which the current user has no allowed permission, a E_WARNING is emitted.

参见