50 lines
1.4 KiB
Go
50 lines
1.4 KiB
Go
/*
|
|
Copyright The containerd Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package schedcore
|
|
|
|
import (
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
// PidType is the type of provided pid value and how it should be treated
|
|
type PidType int
|
|
|
|
const (
|
|
// Pid affects the current pid
|
|
Pid PidType = pidtypePid
|
|
// ThreadGroup affects all threads in the group
|
|
ThreadGroup PidType = pidtypeTgid
|
|
// ProcessGroup affects all processes in the group
|
|
ProcessGroup PidType = pidtypePgid
|
|
)
|
|
|
|
const (
|
|
pidtypePid = 0
|
|
pidtypeTgid = 1
|
|
pidtypePgid = 2
|
|
)
|
|
|
|
// Create a new sched core domain
|
|
func Create(t PidType) error {
|
|
return unix.Prctl(unix.PR_SCHED_CORE, unix.PR_SCHED_CORE_CREATE, 0, uintptr(t), 0)
|
|
}
|
|
|
|
// ShareFrom shares the sched core domain from the provided pid
|
|
func ShareFrom(pid uint64, t PidType) error {
|
|
return unix.Prctl(unix.PR_SCHED_CORE, unix.PR_SCHED_CORE_SHARE_FROM, uintptr(pid), uintptr(t), 0)
|
|
}
|