1 /*
2 * Copyright (C) 2020 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "src/trace_processor/importers/common/system_info_tracker.h"
18
19 #include <cstddef>
20 #include <optional>
21
22 #include "perfetto/ext/base/string_utils.h"
23 #include "perfetto/ext/base/string_view.h"
24 #include "src/trace_processor/types/version_number.h"
25
26 namespace perfetto::trace_processor {
27
28 SystemInfoTracker::SystemInfoTracker() = default;
29 SystemInfoTracker::~SystemInfoTracker() = default;
30
SetKernelVersion(base::StringView name,base::StringView release)31 void SystemInfoTracker::SetKernelVersion(base::StringView name,
32 base::StringView release) {
33 if (name.empty() || release.empty() || name != "Linux") {
34 version_ = std::nullopt;
35 return;
36 }
37
38 size_t first_dot_pos = release.find(".");
39 size_t second_dot_pos = release.find(".", first_dot_pos + 1);
40 auto major_version =
41 base::StringToUInt32(release.substr(0, first_dot_pos).ToStdString());
42 auto minor_version = base::StringToUInt32(
43 release.substr(first_dot_pos + 1, second_dot_pos - (first_dot_pos + 1))
44 .ToStdString());
45 if (!major_version || !minor_version) {
46 version_ = std::nullopt;
47 return;
48 }
49 version_ = VersionNumber{major_version.value(), minor_version.value()};
50 }
51
52 } // namespace perfetto::trace_processor
53