Method signal_thread

vmm/src/cpu.rs:792–799

Sends a signal to the underlying thread. Please call [`Self::wait_until_signal_acknowledged`] afterward to block until the vCPU thread has acknowledged the signal. If the thread is in KVM_RUN (or MSHV_RUN_VP or equivalent), this kicks the thread out of kernel space. If the thread is in user-space, the thread will just handle the event eventually. If the thread is in user-space but about to enter

(&self)

    /// handler will make sure that the next kernel entry of the given
    /// vCPU thread immediately exits to handle the event in user-space.
    fn signal_thread(&self) {
        if let Some(handle) = self.handle.as_ref() {
            // SAFETY: FFI call with correct arguments
            unsafe {
                libc::pthread_kill(handle.as_pthread_t() as _, SIGRTMIN());
            }
        }
    }

    /// Blocks until the vCPU thread has acknowledged the signal. It retries to send
    /// the signal every 10ms. Times out after 1000ms.