pcntl_sigprocmask()

pcntl_sigprocmask()

function pcntl_sigprocmask(int $mode, mixed $signals, mixed $old_signals = []): bool

Changes the signal mask and optionally writes the prior blocked signals.

Parameters:

• $mode (int)
• $signals (mixed)
• $old_signals (mixed), passed by reference, default [], optional

Returns: bool

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_sigprocmask.rs).

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

Internals

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