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diff --git a/test/util/time_util.h b/test/util/time_util.h
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+// Copyright 2019 The gVisor Authors.
+//
+// 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.
+
+#ifndef GVISOR_TEST_UTIL_TIME_UTIL_H_
+#define GVISOR_TEST_UTIL_TIME_UTIL_H_
+
+#include "absl/time/time.h"
+
+namespace gvisor {
+namespace testing {
+
+// Sleep for at least the specified duration. Avoids glibc.
+void SleepSafe(absl::Duration duration);
+
+}  // namespace testing
+}  // namespace gvisor
+
+#endif  // GVISOR_TEST_UTIL_TIME_UTIL_H_