pcntl_setcpuaffinity
Set the cpu affinity of a process
Description
bool pcntl_setcpuaffinity(intnull $pid = null, array $hmask = ?)
Sets the cpu affinity for the pid with the cpu affinity mask given by
hmask.
Parameters
-
pid
-
If
null, the current process ID is used.
-
hmask
-
The cpu affinity mask comprised of one or more cpu id for binding the process to.
Return Values
Returns true on success 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 TypeError is thrown if one
of the cpu id from the hmask is invalid.
A ValueError is thrown if
pid is an invalid process id
or the cpu mask had failed to be created.