pcntl_getcpuaffinity
Get the cpu affinity of a process
Description
boolarray pcntl_getcpuaffinity(intnull $pid
= null
)
Retrieve the cpu affinity of the pid
.
Parameters
-
pid
-
If
null
, the current process ID is used.
Return Values
Returns the cpu affinity mask of the process, or false
on failure.
WarningThis 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
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.