github/kubernetes
1
0
Fork 0
mirror of https://github.com/k3s-io/kubernetes.git synced 2025-07-23 19:56:01 +00:00
Code Issues Projects Releases Wiki Activity

Merge pull request #77626 from ahg-g/ahg-mutex

Browse Source 
Make thread-safe the prebind callback of stateful plugin in scheduler…
This commit is contained in:
Kubernetes Prow Robot 2019-05-09 14:14:27 -07:00 committed by GitHub
commit e45f92fc0a
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
pkg/scheduler/framework/plugins/examples/stateful/stateful.go
View File

@ -18,6 +18,7 @@ package stateful
import (
"fmt"
"sync"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime"
@ -31,6 +32,7 @@ import (
type MultipointExample struct {
mpState map[int]string
numRuns int
mu sync.RWMutex
}
var _ = framework.ReservePlugin(&MultipointExample{})
@ -46,12 +48,16 @@ func (mp *MultipointExample) Name() string {
// Reserve is the functions invoked by the framework at "reserve" extension point.
func (mp *MultipointExample) Reserve(pc *framework.PluginContext, pod *v1.Pod, nodeName string) *framework.Status {
// Reserve is not called concurrently, and so we don't need to lock.
mp.numRuns++
return nil
}
// Prebind is the functions invoked by the framework at "prebind" extension point.
func (mp *MultipointExample) Prebind(pc *framework.PluginContext, pod *v1.Pod, nodeName string) *framework.Status {
// Prebind could be called concurrently for different pods.
mp.mu.Lock()
defer mp.mu.Unlock()
mp.numRuns++
if pod == nil {
return framework.NewStatus(framework.Error, "pod must not be nil")