pcntl_waitpid()

pcntl_waitpid()

function pcntl_waitpid(int $process_id, mixed $status, int $flags = 0, mixed $resource_usage = []): int

Waits for a selected child process and writes its target-native status.

Parameters:

• $process_id (int)
• $status (mixed), passed by reference
• $flags (int), default 0, optional
• $resource_usage (mixed), passed by reference, default [], optional

Returns: int

Availability

• Compiled (AOT): supported on the three executable/release hosts (macOS ARM64, Linux ARM64, and Linux x86_64); calls are refused at compile time for iOS library targets.
• eval() (magician interpreter): supported — declarative interpreter builtin (crates/elephc-magician/src/interpreter/builtins/pcntl/pcntl_waitpid.rs).

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

Internals

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