WNOWAIT
if (unlikely(wo->wo_flags & WNOWAIT)) {
if (!unlikely(wo->wo_flags & WNOWAIT))
if (likely(!(wo->wo_flags & WNOWAIT)))
if (!unlikely(wo->wo_flags & WNOWAIT))
if (options & ~(WNOHANG|WNOWAIT|WEXITED|WSTOPPED|WCONTINUED|
EXPECT_EQ(sys_waitid(P_PID, self->child_pid3, NULL, WEXITED | WNOWAIT), 0);
ASSERT_EQ(sys_waitid(P_PID, self->child_pid_exited, NULL, WEXITED | WNOWAIT), 0);