Method check_signals

crates/vm/src/vm/mod.rs:2018–2038

Checks for triggered signals and calls the appropriate handlers. A no-op on platforms where signals are not supported.

(&self)

    /// Checks for triggered signals and calls the appropriate handlers. A no-op on
    /// platforms where signals are not supported.
    pub fn check_signals(&self) -> PyResult<()> {
        #[cfg(feature = "threading")]
        if self.state.finalizing.load(Ordering::Acquire) && !self.is_main_thread() {
            // once finalization starts,
            // non-main Python threads should stop running bytecode.
            return Err(self.new_exception(self.ctx.exceptions.system_exit.to_owned(), vec![]));
        }

        // Suspend this thread if stop-the-world is in progress
        #[cfg(all(unix, feature = "threading"))]
        thread::suspend_if_needed(&self.state.stop_the_world);

        #[cfg(not(target_arch = "wasm32"))]
        {
            crate::signal::check_signals(self)
        }
        #[cfg(target_arch = "wasm32")]
        {
            Ok(())
        }
    }

    pub(crate) fn push_exception(&self, exc: Option<PyBaseExceptionRef>) {
        self.exceptions.borrow_mut().stack.push(exc);