118 lines
3.0 KiB
Go
118 lines
3.0 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package state
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import (
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"sync"
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"k8s.io/klog/v2"
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"k8s.io/kubernetes/pkg/kubelet/cm/cpuset"
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)
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type stateMemory struct {
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sync.RWMutex
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assignments ContainerCPUAssignments
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defaultCPUSet cpuset.CPUSet
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}
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var _ State = &stateMemory{}
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// NewMemoryState creates new State for keeping track of cpu/pod assignment
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func NewMemoryState() State {
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klog.Infof("[cpumanager] initializing new in-memory state store")
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return &stateMemory{
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assignments: ContainerCPUAssignments{},
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defaultCPUSet: cpuset.NewCPUSet(),
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}
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}
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func (s *stateMemory) GetCPUSet(podUID string, containerName string) (cpuset.CPUSet, bool) {
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s.RLock()
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defer s.RUnlock()
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res, ok := s.assignments[podUID][containerName]
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return res.Clone(), ok
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}
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func (s *stateMemory) GetDefaultCPUSet() cpuset.CPUSet {
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s.RLock()
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defer s.RUnlock()
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return s.defaultCPUSet.Clone()
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}
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func (s *stateMemory) GetCPUSetOrDefault(podUID string, containerName string) cpuset.CPUSet {
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if res, ok := s.GetCPUSet(podUID, containerName); ok {
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return res
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}
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return s.GetDefaultCPUSet()
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}
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func (s *stateMemory) GetCPUAssignments() ContainerCPUAssignments {
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s.RLock()
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defer s.RUnlock()
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return s.assignments.Clone()
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}
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func (s *stateMemory) SetCPUSet(podUID string, containerName string, cset cpuset.CPUSet) {
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s.Lock()
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defer s.Unlock()
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if _, ok := s.assignments[podUID]; !ok {
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s.assignments[podUID] = make(map[string]cpuset.CPUSet)
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}
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s.assignments[podUID][containerName] = cset
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klog.Infof("[cpumanager] updated desired cpuset (pod: %s, container: %s, cpuset: \"%s\")", podUID, containerName, cset)
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}
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func (s *stateMemory) SetDefaultCPUSet(cset cpuset.CPUSet) {
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s.Lock()
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defer s.Unlock()
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s.defaultCPUSet = cset
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klog.Infof("[cpumanager] updated default cpuset: \"%s\"", cset)
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}
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func (s *stateMemory) SetCPUAssignments(a ContainerCPUAssignments) {
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s.Lock()
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defer s.Unlock()
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s.assignments = a.Clone()
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klog.Infof("[cpumanager] updated cpuset assignments: \"%v\"", a)
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}
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func (s *stateMemory) Delete(podUID string, containerName string) {
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s.Lock()
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defer s.Unlock()
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delete(s.assignments[podUID], containerName)
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if len(s.assignments[podUID]) == 0 {
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delete(s.assignments, podUID)
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}
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klog.V(2).Infof("[cpumanager] deleted cpuset assignment (pod: %s, container: %s)", podUID, containerName)
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}
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func (s *stateMemory) ClearState() {
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s.Lock()
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defer s.Unlock()
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s.defaultCPUSet = cpuset.CPUSet{}
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s.assignments = make(ContainerCPUAssignments)
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klog.V(2).Infof("[cpumanager] cleared state")
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}
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