pcntl_getcpuaffinity
(PHP 8 >= 8.4.0)
pcntl_getcpuaffinity — Get the cpu affinity of a process
Description
Retrieve the cpu affinity of the process_id.
Parameters
process_id-
If
null, the current process ID is used.
Return Values
Returns the cpu affinity mask of the process, or false on failure.
Warning
This function may
return Boolean false, but may also return a non-Boolean value which
evaluates to false. Please read the section on Booleans for more
information. Use the ===
operator for testing the return value of this
function.
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.
See Also
- pcntl_setcpuaffinity() - Set the cpu affinity of a process
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