Function sys_close

kernel/src/syscalls.rs:912–937

(context_ptr: *mut Context, handle: u64)

}

fn sys_close(context_ptr: *mut Context, handle: u64) {
    // Extract the current thread
    if let Some(mut thread) = process::take_current_thread() {
        thread.set_context(context_ptr);

        // Take the Rendezvous from the thread
        if let Some(rdv) = thread.take_rendezvous(handle) {
            if Arc::strong_count(&rdv) == 2 {
                // Only this handle (rdv) and one other
                // All other handles have been dropped
                let option_thread = rdv.write().close();
                if let Some(waiting_thread) = option_thread {
                    // A thread was waiting -> Switch to it
                    process::schedule_thread(thread);
                    process::schedule_thread(waiting_thread);

                    drop(rdv); // Not returning from launch_thread
                    let new_context_addr = process::schedule_next(context_ptr as usize);
                    interrupts::launch_thread(new_context_addr);
                }
            }
            // Drop rendezvous
        }
        process::set_current_thread(thread);
    }
}

fn sys_await_interrupt(context_ptr: *mut Context, _interrupt_number: u64) {
    // Extract the current thread