1/*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include "process_helper.h"
17
18#include <cstdint>
19#include <fstream>
20#include <sstream>
21#include <sys/resource.h>
22#include <sys/time.h>
23#include <sys/sysinfo.h>
24
25namespace Commonlibrary::Platform {
26static long g_hz = sysconf(_SC_CLK_TCK);
27
28void ProcessExit(int signal)
29{
30    quick_exit(signal);
31}
32
33int GetSysConfig(int number)
34{
35    auto configinfo = static_cast<int32_t>(sysconf(number));
36    return configinfo;
37}
38
39double GetSysTimer()
40{
41    struct sysinfo information = {0};
42    time_t systimer = 0;
43    if (sysinfo(&information)) {
44        HILOG_ERROR("Failed to get sysinfo");
45        return SYS_INFO_FAILED;
46    }
47    systimer = information.uptime;
48    return static_cast<double>(systimer);
49}
50
51int GetThreadId()
52{
53    auto proTid = static_cast<int64_t>(gettid());
54    return proTid;
55}
56
57int GetThreadPRY(int tid)
58{
59    int32_t pri = getpriority(PRIO_PROCESS, tid);
60    return pri;
61}
62
63double GetProcessStartRealtime()
64{
65    double startRealtime = 0;
66    std::string path = "/proc/" + std::to_string(getpid()) + "/stat";
67    std::ifstream statFile(path);
68    if (!statFile.is_open()) {
69        HILOG_ERROR("process:: Failed to open config file");
70        return startRealtime;
71    }
72    std::string strLine;
73    std::getline(statFile, strLine);
74    if (strLine.empty()) {
75        HILOG_ERROR("process:: No valid content was read");
76        statFile.close();
77        return startRealtime;
78    }
79    std::istringstream iss(strLine);
80    int count = 1;
81    std::string word;
82    while (iss >> word) {
83        if (count == 22) { // 22 : starttime
84            if (g_hz == -1) {
85                statFile.close();
86                return startRealtime;
87            }
88            startRealtime = word.empty() ? 0 : std::strtod(word.c_str(), nullptr);
89            startRealtime = (startRealtime * 1000) / static_cast<double>(g_hz); // 1000 : // Calculate milliseconds
90            break;
91        }
92        count++;
93    }
94    statFile.close();
95    return startRealtime;
96}
97} // namespace Commonlibrary::Platform