diff options
Diffstat (limited to 'test/perf/linux/verity_stat_benchmark.cc')
-rw-r--r-- | test/perf/linux/verity_stat_benchmark.cc | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/test/perf/linux/verity_stat_benchmark.cc b/test/perf/linux/verity_stat_benchmark.cc deleted file mode 100644 index b43a9e266..000000000 --- a/test/perf/linux/verity_stat_benchmark.cc +++ /dev/null @@ -1,84 +0,0 @@ -// Copyright 2021 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/mount.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include <algorithm> -#include <vector> - -#include "gtest/gtest.h" -#include "absl/strings/str_cat.h" -#include "benchmark/benchmark.h" -#include "test/util/fs_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/verity_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Creates a file in a nested directory hierarchy at least `depth` directories -// deep, and stats that file multiple times. -void BM_VerityStat(benchmark::State& state) { - // Create nested directories with given depth. - int depth = state.range(0); - - // Mount a tmpfs file system to be wrapped by a verity fs. - TempPath top_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - TEST_CHECK(mount("", top_dir.path().c_str(), "tmpfs", 0, "") == 0); - std::string dir_path = top_dir.path(); - std::string child_path = ""; - std::vector<EnableTarget> targets; - - while (depth-- > 0) { - // Don't use TempPath because it will make paths too long to use. - // - // The top_dir destructor will clean up this whole tree. - dir_path = JoinPath(dir_path, absl::StrCat(depth)); - ASSERT_NO_ERRNO(Mkdir(dir_path, 0755)); - child_path = JoinPath(child_path, Basename(dir_path)); - targets.emplace_back(EnableTarget(child_path, O_RDONLY)); - } - - // Create the file that will be stat'd. - const TempPath file = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir_path)); - - targets.emplace_back( - EnableTarget(JoinPath(child_path, Basename(file.path())), O_RDONLY)); - - // Reverse the targets because verity should be enabled from the lowest level. - std::reverse(targets.begin(), targets.end()); - - std::string verity_dir = - TEST_CHECK_NO_ERRNO_AND_VALUE(MountVerity(top_dir.path(), targets)); - - struct stat st; - for (auto _ : state) { - ASSERT_THAT(stat(JoinPath(verity_dir, targets[0].path).c_str(), &st), - SyscallSucceeds()); - } -} - -BENCHMARK(BM_VerityStat)->Range(1, 100)->UseRealTime(); - -} // namespace - -} // namespace testing -} // namespace gvisor |