pcntl_getcpuaffinity
PHP function
Edit on GitHub ✎
(PHP 8 >= 8.4.0)
Get the cpu affinity of a process
Description
pcntl_getcpuaffinity(int|null $process_id = null): array|false
Retrieve the cpu affinity of the process_id.
Parameters
process_idIf null, the current process ID is used.
Return Values
Returns the cpu affinity mask of the process, Falseforfailure.
Falseproblem
Errors/Exceptions
A ValueError is thrown when process_id is an invalid process id or the cpu mask had failed to be created.
If process_id is a process for which the current user has no allowed permission, a E_WARNING is emitted.