20     int x = 0;  in ffrt_submit_example1()  local
21     ffrt::submit([&]() { x = 2; }, {}, {&x});  in ffrt_submit_example1()
22     ffrt::submit([&]() { x = x * 3; }, {&x}, {});  in ffrt_submit_example1()
24     printf("hello ffrt. x=%d\n", x);  in ffrt_submit_example1()
29     int x = 0;  in ffrt_submit_example2()  local
30     ffrt::submit([&]() { x = 2; }, {}, {&x}, ffrt::task_attr().name("add2"));  in ffrt_submit_example2()
31     ffrt::submit([&]() { x = x * 3; }, {&x}, {},  in ffrt_submit_example2()
34     printf("hello ffrt. x=%d\n", x);  in ffrt_submit_example2()
40     int x = 0;  in ffrt_submit_example3()  local
41     ffrt::task_handle h = ffrt::submit_h([&]() { x = 2; }, {}, {});  in ffrt_submit_example3()
43     printf("hello ffrt, x=%d\n", x);  in ffrt_submit_example3()