use_file: switch to futex on Linux and to nanosleep on other targets
#137
| Job | Run time |
|---|---|
| 13s | |
| 2m 10s | |
| 10s | |
| 2m 33s |
nanosleep on other targets
#137
| Job | Run time |
|---|---|
| 13s | |
| 2m 10s | |
| 10s | |
| 2m 33s |