mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-27 01:50:24 +00:00
6dded99777
The priority range was changed several years ago, but the userland-reported limits were just forgotten :skeleyak:. Move the thread priority constants into an API header so that userland can use it properly.
57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <sched.h>
|
|
#include <syscall.h>
|
|
|
|
extern "C" {
|
|
|
|
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/sched_yield.html
|
|
int sched_yield()
|
|
{
|
|
int rc = syscall(SC_yield);
|
|
__RETURN_WITH_ERRNO(rc, rc, -1);
|
|
}
|
|
|
|
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/sched_get_priority_min.html
|
|
int sched_get_priority_min([[maybe_unused]] int policy)
|
|
{
|
|
return THREAD_PRIORITY_MIN;
|
|
}
|
|
|
|
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/sched_get_priority_max.html
|
|
int sched_get_priority_max([[maybe_unused]] int policy)
|
|
{
|
|
return THREAD_PRIORITY_MAX;
|
|
}
|
|
|
|
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/sched_setparam.html
|
|
int sched_setparam(pid_t pid, const struct sched_param* param)
|
|
{
|
|
Syscall::SC_scheduler_parameters_params parameters {
|
|
.pid_or_tid = pid,
|
|
.mode = Syscall::SchedulerParametersMode::Process,
|
|
.parameters = *param,
|
|
};
|
|
int rc = syscall(SC_scheduler_set_parameters, ¶meters);
|
|
__RETURN_WITH_ERRNO(rc, rc, -1);
|
|
}
|
|
|
|
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/sched_getparam.html
|
|
int sched_getparam(pid_t pid, struct sched_param* param)
|
|
{
|
|
Syscall::SC_scheduler_parameters_params parameters {
|
|
.pid_or_tid = pid,
|
|
.mode = Syscall::SchedulerParametersMode::Process,
|
|
.parameters = {},
|
|
};
|
|
int rc = syscall(SC_scheduler_get_parameters, ¶meters);
|
|
if (rc == 0)
|
|
*param = parameters.parameters;
|
|
__RETURN_WITH_ERRNO(rc, rc, -1);
|
|
}
|
|
}
|