Function waiter

test/bthread_id_unittest.cpp:343–348

}

void* waiter(void* arg) {
    bthread_id_t id = { (uintptr_t)arg };
    EXPECT_EQ(0, bthread_id_join(id));
    EXPECT_EQ(get_version(id) + 4, bthread::id_value(id));
    return NULL;
}

int handle_data(bthread_id_t id, void* data, int error_code) {
    EXPECT_EQ(EBADF, error_code);