Function RandomCancelKey

src/backend/postmaster/postmaster.c:6013–6017

* Generate a random cancel key. */

 * Generate a random cancel key.
 */
static bool
RandomCancelKey(int32 *cancel_key)
{
	return pg_strong_random(cancel_key, sizeof(int32));
}

/*
 * Count up number of child processes of specified types (dead_end children