70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
/*
|
|
* Copyright (C) 2022 The Android Open Source Project
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#define LOG_TAG "Process"
|
|
#include <utils/Log.h>
|
|
#include <mediautils/Process.h>
|
|
|
|
#include <android-base/file.h>
|
|
#include <android-base/strings.h>
|
|
#include <cstdlib>
|
|
|
|
namespace {
|
|
|
|
void processLine(std::string_view s, std::map<std::string, double>& m) {
|
|
if (s.empty()) return;
|
|
|
|
const size_t colon_pos = s.find(':');
|
|
if (colon_pos == std::string_view::npos) return;
|
|
|
|
const size_t space_pos = s.find(' ');
|
|
if (space_pos == 0 || space_pos == std::string_view::npos || space_pos > colon_pos) return;
|
|
std::string key(s.data(), s.data() + space_pos);
|
|
|
|
const size_t value_pos = s.find_first_not_of(' ', colon_pos + 1);
|
|
if (value_pos == std::string_view::npos) return;
|
|
|
|
const double value = strtod(s.data() + value_pos, nullptr /* end */);
|
|
m[std::move(key)] = value;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
namespace android::mediautils {
|
|
|
|
std::string getThreadSchedAsString(pid_t tid) {
|
|
const pid_t pid = getpid();
|
|
const std::string path = std::string("/proc/").append(std::to_string(pid))
|
|
.append("/task/").append(std::to_string(tid)).append("/sched");
|
|
std::string sched;
|
|
(void)android::base::ReadFileToString(path.c_str(), &sched);
|
|
return sched;
|
|
}
|
|
|
|
std::map<std::string, double> parseThreadSchedString(const std::string& schedString) {
|
|
std::map<std::string, double> m;
|
|
if (schedString.empty()) return m;
|
|
std::vector<std::string> stringlist = android::base::Split(schedString, "\n");
|
|
|
|
// OK we use values not strings... m["summary"] = stringlist[0];
|
|
for (size_t i = 2; i < stringlist.size(); ++i) {
|
|
processLine(stringlist[i], m);
|
|
}
|
|
return m;
|
|
}
|
|
|
|
} // namespace android::mediautils
|