1 files changed, 51 insertions, 0 deletions
diff --git a/pkg/sentry/kernel/epoll/epoll_state.go b/pkg/sentry/kernel/epoll/epoll_state.go
new file mode 100644
index 000000000..dabb32f49
--- /dev/null
+++ b/pkg/sentry/kernel/epoll/epoll_state.go
@@ -0,0 +1,51 @@
+// Copyright 2018 Google Inc.
+//
+// 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 epoll
+
+import (
+	"gvisor.googlesource.com/gvisor/pkg/ilist"
+	"gvisor.googlesource.com/gvisor/pkg/refs"
+	"gvisor.googlesource.com/gvisor/pkg/waiter"
+)
+
+// afterLoad is invoked by stateify.
+func (p *pollEntry) afterLoad() {
+	p.waiter = waiter.Entry{Callback: &readyCallback{}}
+	p.waiter.Context = p
+	p.file = refs.NewWeakRef(p.id.File, p)
+	p.id.File.EventRegister(&p.waiter, p.mask)
+}
+
+// afterLoad is invoked by stateify.
+func (e *EventPoll) afterLoad() {
+	e.listsMu.Lock()
+	defer e.listsMu.Unlock()
+
+	for _, ls := range []*ilist.List{&e.waitingList, &e.readyList, &e.disabledList} {
+		for it := ls.Front(); it != nil; it = it.Next() {
+			it.(*pollEntry).curList = ls
+		}
+	}
+
+	for it := e.waitingList.Front(); it != nil; it = it.Next() {
+		p := it.(*pollEntry)
+		if p.id.File.Readiness(p.mask) != 0 {
+			e.waitingList.Remove(p)
+			e.readyList.PushBack(p)
+			p.curList = &e.readyList
+			e.Notify(waiter.EventIn)
+		}
+	}
+}