Function cursig

freebsd/kern/kern_sig.c:601–608

* Determine signal that should be delivered to thread td, the current * thread, 0 if none. If there is a pending stop signal with default * action, the process stops in issignal(). */

 * action, the process stops in issignal().
 */
int
cursig(struct thread *td)
{
	PROC_LOCK_ASSERT(td->td_proc, MA_OWNED);
	mtx_assert(&td->td_proc->p_sigacts->ps_mtx, MA_OWNED);
	THREAD_LOCK_ASSERT(td, MA_NOTOWNED);
	return (SIGPENDING(td) ? issignal(td) : 0);
}

/*
 * Arrange for ast() to handle unmasked pending signals on return to user