| created | 2020-01-20T04:49:17Z |
|---|---|
| begin | 2020-01-12T00:00:00Z |
| end | 2020-01-12T00:01:12Z |
| path | src/sys |
| commits | 1 |
| date | 2020-01-12T00:01:12Z | |||
|---|---|---|---|---|
| author | cheloha | |||
| files | src/sys/kern/kern_synch.c | log | diff | annotate |
| message |
*sleep_nsec(9): sleep *at least* the given number of nanoseconds The *sleep(9) interfaces are challenging to use when one needs to sleep for a given minimum duration: the programmer needs to account for both the current tick and any integer division when converting an interval to a count of ticks. This sort of input conversion is complicated and ugly at best and error-prone at worst. This patch consolidates this conversion logic into the *sleep_nsec(9) functions themselves. This will allow us to use the functions at the syscall layer and elsewhere in the kernel where guaranteeing a minimum sleep duration is of vital importance. With input from bluhm@, guenther@, ratchov@, tedu@, and kettenis@. Requested by mpi@ and kettenis@. Conversion algorithm from mpi@. ok mpi@, kettenis@, deraadt@ |
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