RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 11:58:12 +00:00
Code Issues Activity Actions

Kernel: Support more clocks in sys$clock_getres()

Browse source 
Support all the available clocks in clock_getres(). Also, fix this
function to use the actual ticks per second value, not the constant
`_SC_CLK_TCK` (which is always equal to 8) and move the resolution
computation logic to TimeManagement.
This commit is contained in:
Humberto Alves 2023-02-20 21:06:29 +00:00 • committed by Andreas Kling
parent 3c7a0ef1ac
commit f6eb155167
3 changed files with 12 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

15
Kernel/Syscalls/clock.cpp
View file

@ -98,16 +98,11 @@ ErrorOr<FlatPtr> Process::sys$clock_getres(Userspace<Syscall::SC_clock_getres_pa
{
VERIFY_NO_PROCESS_BIG_LOCK(this);
auto params = TRY(copy_typed_from_user(user_params));
timespec ts {};
switch (params.clock_id) {
case CLOCK_REALTIME:
ts.tv_sec = 0;
ts.tv_nsec = 1000000000 / _SC_CLK_TCK;
TRY(copy_to_user(params.result, &ts));
break;
default:
return EINVAL;
}
TRY(TimeManagement::validate_clock_id(params.clock_id));
auto ts = TimeManagement::the().clock_resolution().to_timespec();
TRY(copy_to_user(params.result, &ts));
return 0;
}