pcntl_getcpuaffinity()

pcntl_getcpuaffinity()

function pcntl_getcpuaffinity(int $process_id = null): mixed

Returns the CPU affinity mask for a Linux process, or false on failure.

Parameters:

• $process_id (int), default null, optional

Returns: mixed

Availability

• Compiled (AOT): supported by the Elephc code generator.
• eval() (magician interpreter): supported — declarative interpreter builtin (crates/elephc-magician/src/interpreter/builtins/pcntl/pcntl_getcpuaffinity.rs).

No examples yet — check examples/ and showcases/ for usage patterns.

Internals

For how pcntl_getcpuaffinity is implemented in the compiler, see the internals page.