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-rw-r--r--pkg/sentry/kernel/threads.go9
1 files changed, 9 insertions, 0 deletions
diff --git a/pkg/sentry/kernel/threads.go b/pkg/sentry/kernel/threads.go
index 872e1a82d..fdadb52c0 100644
--- a/pkg/sentry/kernel/threads.go
+++ b/pkg/sentry/kernel/threads.go
@@ -36,6 +36,8 @@ import (
const TasksLimit = (1 << 16)
// ThreadID is a generic thread identifier.
+//
+// +marshal
type ThreadID int32
// String returns a decimal representation of the ThreadID.
@@ -263,6 +265,13 @@ func (ns *PIDNamespace) Tasks() []*Task {
return tasks
}
+// NumTasks returns the number of tasks in ns.
+func (ns *PIDNamespace) NumTasks() int {
+ ns.owner.mu.RLock()
+ defer ns.owner.mu.RUnlock()
+ return len(ns.tids)
+}
+
// ThreadGroups returns a snapshot of the thread groups in ns.
func (ns *PIDNamespace) ThreadGroups() []*ThreadGroup {
return ns.ThreadGroupsAppend(nil)