From 30794512d3977ebb2b185e5e9cfb969d558a07a4 Mon Sep 17 00:00:00 2001
From: Adin Scannell <ascannell@google.com>
Date: Wed, 19 Feb 2020 18:20:52 -0800
Subject: Add basic microbenchmarks.

PiperOrigin-RevId: 296104390
---
 test/perf/linux/gettid_benchmark.cc | 38 +++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 test/perf/linux/gettid_benchmark.cc

(limited to 'test/perf/linux/gettid_benchmark.cc')

diff --git a/test/perf/linux/gettid_benchmark.cc b/test/perf/linux/gettid_benchmark.cc
new file mode 100644
index 000000000..8f4961f5e
--- /dev/null
+++ b/test/perf/linux/gettid_benchmark.cc
@@ -0,0 +1,38 @@
+// Copyright 2020 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.
+
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "gtest/gtest.h"
+#include "benchmark/benchmark.h"
+
+namespace gvisor {
+namespace testing {
+
+namespace {
+
+void BM_Gettid(benchmark::State& state) {
+  for (auto _ : state) {
+    syscall(SYS_gettid);
+  }
+}
+
+BENCHMARK(BM_Gettid)->ThreadRange(1, 4000)->UseRealTime();
+
+}  // namespace
+
+}  // namespace testing
+}  // namespace gvisor
-- 
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