cgroups: fix MoveTo function fail problem

flyflypeng · flyflypeng · commit 0ecd2b66d378 · 2019-06-20T13:37:48.000-04:00
reason: there maybe some multi processes in the cgroup.procs file,if
some processes exit before call destination.Add(p), it will get the error
"no such process" which means process has exit and we just ignore this
error and continue to move left processes in cgroup.procs file.

Signed-off-by: jiangpengfei &lt;jiangpengfei9@huawei.com&gt;
diff --git a/cgroup.go b/cgroup.go
@@ -497,6 +497,9 @@ func (c *cgroup) MoveTo(destination Cgroup) error {
 		}
 		for _, p := range processes {
 			if err := destination.Add(p); err != nil {
+				if strings.Contains(err.Error(), "no such process") {
+					continue
+				}
 				return err
 			}
 		}

Original file line number	Diff line number	Diff line change
`@@ -497,6 +497,9 @@ func (c *cgroup) MoveTo(destination Cgroup) error {`
`497`	`497`	`}`
`498`	`498`	`for _, p := range processes {`
`499`	`499`	`if err := destination.Add(p); err != nil {`
	`500`	`+ if strings.Contains(err.Error(), "no such process") {`
	`501`	`+ continue`
	`502`	`+ }`
`500`	`503`	`return err`
`501`	`504`	`}`
`502`	`505`	`}`