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Fix race on state serialization

Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com>
This commit is contained in:
Alexandr Morozov 2014-08-14 19:38:06 +04:00
parent 93d6adf8a1
commit f1975cbc7c
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@ -1,6 +1,7 @@
package daemon
import (
"encoding/json"
"fmt"
"sync"
"time"
@ -49,6 +50,16 @@ func (s *State) String() string {
return fmt.Sprintf("Exited (%d) %s ago", s.ExitCode, units.HumanDuration(time.Now().UTC().Sub(s.FinishedAt)))
}
type jState State
// MarshalJSON for state is needed to avoid race conditions on inspect
func (s *State) MarshalJSON() ([]byte, error) {
s.RLock()
b, err := json.Marshal(jState(*s))
s.RUnlock()
return b, err
}
func wait(waitChan <-chan struct{}, timeout time.Duration) error {
if timeout < 0 {
<-waitChan